From 9d8f13ba3f4833219e50767b022b82cd0da930eb Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Mon, 6 Jun 2011 15:29:25 -0400 Subject: security: new security_inode_init_security API adds function callback This patch changes the security_inode_init_security API by adding a filesystem specific callback to write security extended attributes. This change is in preparation for supporting the initialization of multiple LSM xattrs and the EVM xattr. Initially the callback function walks an array of xattrs, writing each xattr separately, but could be optimized to write multiple xattrs at once. For existing security_inode_init_security() calls, which have not yet been converted to use the new callback function, such as those in reiserfs and ocfs2, this patch defines security_old_inode_init_security(). Signed-off-by: Mimi Zohar --- include/linux/security.h | 17 ++++++++++++----- include/linux/xattr.h | 6 ++++++ 2 files changed, 18 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 8ce59ef3e5af..6a20c7025495 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -36,6 +36,7 @@ #include #include #include +#include #include /* Maximum number of letters for an LSM name string */ @@ -147,6 +148,10 @@ extern int mmap_min_addr_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); #endif +/* security_inode_init_security callback function to write xattrs */ +typedef int (*initxattrs) (struct inode *inode, + const struct xattr *xattr_array, void *fs_data); + #ifdef CONFIG_SECURITY struct security_mnt_opts { @@ -1704,8 +1709,11 @@ int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); int security_inode_alloc(struct inode *inode); void security_inode_free(struct inode *inode); int security_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, - void **value, size_t *len); + const struct qstr *qstr, + initxattrs initxattrs, void *fs_data); +int security_old_inode_init_security(struct inode *inode, struct inode *dir, + const struct qstr *qstr, char **name, + void **value, size_t *len); int security_inode_create(struct inode *dir, struct dentry *dentry, int mode); int security_inode_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry); @@ -2035,9 +2043,8 @@ static inline void security_inode_free(struct inode *inode) static inline int security_inode_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr, - char **name, - void **value, - size_t *len) + initxattrs initxattrs, + void *fs_data) { return -EOPNOTSUPP; } diff --git a/include/linux/xattr.h b/include/linux/xattr.h index aed54c50aa66..7a378662ddff 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -67,6 +67,12 @@ struct xattr_handler { size_t size, int flags, int handler_flags); }; +struct xattr { + char *name; + void *value; + size_t value_len; +}; + ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t); ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t); ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size); -- cgit v1.2.2 From f381c272224f5f158f5cff64f8f3481fa0eee8b3 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:13:22 -0500 Subject: integrity: move ima inode integrity data management Move the inode integrity data(iint) management up to the integrity directory in order to share the iint among the different integrity models. Changelog: - don't define MAX_DIGEST_SIZE - rename several globally visible 'ima_' prefixed functions, structs, locks, etc to 'integrity_' - replace '20' with SHA1_DIGEST_SIZE - reflect location change in appropriate Kconfig and Makefiles - remove unnecessary initialization of iint_initialized to 0 - rebased on current ima_iint.c - define integrity_iint_store/lock as static There should be no other functional changes. Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/ima.h | 13 ------------- include/linux/integrity.h | 30 ++++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+), 13 deletions(-) create mode 100644 include/linux/integrity.h (limited to 'include/linux') diff --git a/include/linux/ima.h b/include/linux/ima.h index 09e6e62f9953..6ac8e50c6cf5 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -15,8 +15,6 @@ struct linux_binprm; #ifdef CONFIG_IMA extern int ima_bprm_check(struct linux_binprm *bprm); -extern int ima_inode_alloc(struct inode *inode); -extern void ima_inode_free(struct inode *inode); extern int ima_file_check(struct file *file, int mask); extern void ima_file_free(struct file *file); extern int ima_file_mmap(struct file *file, unsigned long prot); @@ -27,16 +25,6 @@ static inline int ima_bprm_check(struct linux_binprm *bprm) return 0; } -static inline int ima_inode_alloc(struct inode *inode) -{ - return 0; -} - -static inline void ima_inode_free(struct inode *inode) -{ - return; -} - static inline int ima_file_check(struct file *file, int mask) { return 0; @@ -51,6 +39,5 @@ static inline int ima_file_mmap(struct file *file, unsigned long prot) { return 0; } - #endif /* CONFIG_IMA_H */ #endif /* _LINUX_IMA_H */ diff --git a/include/linux/integrity.h b/include/linux/integrity.h new file mode 100644 index 000000000000..905981247327 --- /dev/null +++ b/include/linux/integrity.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2009 IBM Corporation + * Author: Mimi Zohar + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 2 of the License. + */ + +#ifndef _LINUX_INTEGRITY_H +#define _LINUX_INTEGRITY_H + +#include + +#ifdef CONFIG_INTEGRITY +extern int integrity_inode_alloc(struct inode *inode); +extern void integrity_inode_free(struct inode *inode); + +#else +static inline int integrity_inode_alloc(struct inode *inode) +{ + return 0; +} + +static inline void integrity_inode_free(struct inode *inode) +{ + return; +} +#endif /* CONFIG_INTEGRITY_H */ +#endif /* _LINUX_INTEGRITY_H */ -- cgit v1.2.2 From 1601fbad2b14e0b8d4dbb55e749bfe31e972818a Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:23:34 -0500 Subject: xattr: define vfs_getxattr_alloc and vfs_xattr_cmp vfs_getxattr_alloc() and vfs_xattr_cmp() are two new kernel xattr helper functions. vfs_getxattr_alloc() first allocates memory for the requested xattr and then retrieves it. vfs_xattr_cmp() compares a given value with the contents of an extended attribute. Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/xattr.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/xattr.h b/include/linux/xattr.h index 7a378662ddff..4703f6bd1f53 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -84,7 +84,10 @@ ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size); int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); int generic_removexattr(struct dentry *dentry, const char *name); - +ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name, + char **xattr_value, size_t size, gfp_t flags); +int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name, + const char *value, size_t size, gfp_t flags); #endif /* __KERNEL__ */ #endif /* _LINUX_XATTR_H */ -- cgit v1.2.2 From 66dbc325afcef909043c30e90930a36823fc734c Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 15 Mar 2011 16:12:09 -0400 Subject: evm: re-release EVM protects a file's security extended attributes(xattrs) against integrity attacks. This patchset provides the framework and an initial method. The initial method maintains an HMAC-sha1 value across the security extended attributes, storing the HMAC value as the extended attribute 'security.evm'. Other methods of validating the integrity of a file's metadata will be posted separately (eg. EVM-digital-signatures). While this patchset does authenticate the security xattrs, and cryptographically binds them to the inode, coming extensions will bind other directory and inode metadata for more complete protection. To help simplify the review and upstreaming process, each extension will be posted separately (eg. IMA-appraisal, IMA-appraisal-directory). For a general overview of the proposed Linux integrity subsystem, refer to Dave Safford's whitepaper: http://downloads.sf.net/project/linux-ima/linux-ima/Integrity_overview.pdf. EVM depends on the Kernel Key Retention System to provide it with a trusted/encrypted key for the HMAC-sha1 operation. The key is loaded onto the root's keyring using keyctl. Until EVM receives notification that the key has been successfully loaded onto the keyring (echo 1 > /evm), EVM can not create or validate the 'security.evm' xattr, but returns INTEGRITY_UNKNOWN. Loading the key and signaling EVM should be done as early as possible. Normally this is done in the initramfs, which has already been measured as part of the trusted boot. For more information on creating and loading existing trusted/encrypted keys, refer to Documentation/keys-trusted-encrypted.txt. A sample dracut patch, which loads the trusted/encrypted key and enables EVM, is available from http://linux-ima.sourceforge.net/#EVM. Based on the LSMs enabled, the set of EVM protected security xattrs is defined at compile. EVM adds the following three calls to the existing security hooks: evm_inode_setxattr(), evm_inode_post_setxattr(), and evm_inode_removexattr. To initialize and update the 'security.evm' extended attribute, EVM defines three calls: evm_inode_post_init(), evm_inode_post_setattr() and evm_inode_post_removexattr() hooks. To verify the integrity of a security xattr, EVM exports evm_verifyxattr(). Changelog v7: - Fixed URL in EVM ABI documentation Changelog v6: (based on Serge Hallyn's review) - fix URL in patch description - remove evm_hmac_size definition - use SHA1_DIGEST_SIZE (removed both MAX_DIGEST_SIZE and evm_hmac_size) - moved linux include before other includes - test for crypto_hash_setkey failure - fail earlier for invalid key - clear entire encrypted key, even on failure - check xattr name length before comparing xattr names Changelog: - locking based on i_mutex, remove evm_mutex - using trusted/encrypted keys for storing the EVM key used in the HMAC-sha1 operation. - replaced crypto hash with shash (Dmitry Kasatkin) - support for additional methods of verifying the security xattrs (Dmitry Kasatkin) - iint not allocated for all regular files, but only for those appraised - Use cap_sys_admin in lieu of cap_mac_admin - Use __vfs_setxattr_noperm(), without permission checks, from EVM Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/integrity.h | 7 +++++++ include/linux/xattr.h | 3 +++ 2 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/integrity.h b/include/linux/integrity.h index 905981247327..e715a2abcea2 100644 --- a/include/linux/integrity.h +++ b/include/linux/integrity.h @@ -12,6 +12,13 @@ #include +enum integrity_status { + INTEGRITY_PASS = 0, + INTEGRITY_FAIL, + INTEGRITY_NOLABEL, + INTEGRITY_UNKNOWN, +}; + #ifdef CONFIG_INTEGRITY extern int integrity_inode_alloc(struct inode *inode); extern void integrity_inode_free(struct inode *inode); diff --git a/include/linux/xattr.h b/include/linux/xattr.h index 4703f6bd1f53..b20cb965c322 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -30,6 +30,9 @@ #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1) /* Security namespace */ +#define XATTR_EVM_SUFFIX "evm" +#define XATTR_NAME_EVM XATTR_SECURITY_PREFIX XATTR_EVM_SUFFIX + #define XATTR_SELINUX_SUFFIX "selinux" #define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX -- cgit v1.2.2 From 6be5cc5246f807fd8ede9f5f1bb2826f2c598658 Mon Sep 17 00:00:00 2001 From: Dmitry Kasatkin Date: Wed, 9 Mar 2011 14:28:20 -0500 Subject: evm: add support for different security.evm data types EVM protects a file's security extended attributes(xattrs) against integrity attacks. The current patchset maintains an HMAC-sha1 value across the security xattrs, storing the value as the extended attribute 'security.evm'. We anticipate other methods for protecting the security extended attributes. This patch reserves the first byte of 'security.evm' as a place holder for the type of method. Changelog v6: - move evm_ima_xattr_type definition to security/integrity/integrity.h - defined a structure for the EVM xattr called evm_ima_xattr_data (based on Serge Hallyn's suggestion) - removed unnecessary memset Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/integrity.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/integrity.h b/include/linux/integrity.h index e715a2abcea2..968443385678 100644 --- a/include/linux/integrity.h +++ b/include/linux/integrity.h @@ -19,6 +19,7 @@ enum integrity_status { INTEGRITY_UNKNOWN, }; +/* List of EVM protected security xattrs */ #ifdef CONFIG_INTEGRITY extern int integrity_inode_alloc(struct inode *inode); extern void integrity_inode_free(struct inode *inode); -- cgit v1.2.2 From 3e1be52d6c6b21d9080dd886c0e609e009831562 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:38:26 -0500 Subject: security: imbed evm calls in security hooks Imbed the evm calls evm_inode_setxattr(), evm_inode_post_setxattr(), evm_inode_removexattr() in the security hooks. evm_inode_setxattr() protects security.evm xattr. evm_inode_post_setxattr() and evm_inode_removexattr() updates the hmac associated with an inode. (Assumes an LSM module protects the setting/removing of xattr.) Changelog: - Don't define evm_verifyxattr(), unless CONFIG_INTEGRITY is enabled. - xattr_name is a 'const', value is 'void *' Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/evm.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/linux/evm.h (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h new file mode 100644 index 000000000000..8b4e9e3b395e --- /dev/null +++ b/include/linux/evm.h @@ -0,0 +1,56 @@ +/* + * evm.h + * + * Copyright (c) 2009 IBM Corporation + * Author: Mimi Zohar + */ + +#ifndef _LINUX_EVM_H +#define _LINUX_EVM_H + +#include + +#ifdef CONFIG_EVM +extern enum integrity_status evm_verifyxattr(struct dentry *dentry, + const char *xattr_name, + void *xattr_value, + size_t xattr_value_len); +extern int evm_inode_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size); +extern void evm_inode_post_setxattr(struct dentry *dentry, + const char *xattr_name, + const void *xattr_value, + size_t xattr_value_len); +extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name); +#else +#ifdef CONFIG_INTEGRITY +static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, + const char *xattr_name, + void *xattr_value, + size_t xattr_value_len) +{ + return INTEGRITY_UNKNOWN; +} +#endif + +static inline int evm_inode_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size) +{ + return 0; +} + +static inline void evm_inode_post_setxattr(struct dentry *dentry, + const char *xattr_name, + const void *xattr_value, + size_t xattr_value_len) +{ + return; +} + +static inline int evm_inode_removexattr(struct dentry *dentry, + const char *xattr_name) +{ + return 0; +} +#endif /* CONFIG_EVM_H */ +#endif /* LINUX_EVM_H */ -- cgit v1.2.2 From c7b87de23b6fd5dfbe5c36601f29d6c515056343 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:39:18 -0500 Subject: evm: evm_inode_post_removexattr When an EVM protected extended attribute is removed, update 'security.evm'. Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/evm.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index 8b4e9e3b395e..a730782da563 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -22,6 +22,8 @@ extern void evm_inode_post_setxattr(struct dentry *dentry, const void *xattr_value, size_t xattr_value_len); extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name); +extern void evm_inode_post_removexattr(struct dentry *dentry, + const char *xattr_name); #else #ifdef CONFIG_INTEGRITY static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, @@ -52,5 +54,12 @@ static inline int evm_inode_removexattr(struct dentry *dentry, { return 0; } + +static inline void evm_inode_post_removexattr(struct dentry *dentry, + const char *xattr_name) +{ + return; +} + #endif /* CONFIG_EVM_H */ #endif /* LINUX_EVM_H */ -- cgit v1.2.2 From 975d294373d8c1c913ad2bf4eb93966d4c7ca38f Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:39:57 -0500 Subject: evm: imbed evm_inode_post_setattr Changing the inode's metadata may require the 'security.evm' extended attribute to be re-calculated and updated. Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn --- include/linux/evm.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index a730782da563..33a92471e463 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -15,6 +15,7 @@ extern enum integrity_status evm_verifyxattr(struct dentry *dentry, const char *xattr_name, void *xattr_value, size_t xattr_value_len); +extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid); extern int evm_inode_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size); extern void evm_inode_post_setxattr(struct dentry *dentry, @@ -35,6 +36,11 @@ static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, } #endif +static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid) +{ + return; +} + static inline int evm_inode_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size) { -- cgit v1.2.2 From cb72318069d5e92eb74840118732c66eb38c812f Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Wed, 9 Mar 2011 14:40:44 -0500 Subject: evm: add evm_inode_init_security to initialize new files Initialize 'security.evm' for new files. Changelog v7: - renamed evm_inode_post_init_security to evm_inode_init_security - moved struct xattr definition to earlier patch - allocate xattr name Changelog v6: - Use 'struct evm_ima_xattr_data' Signed-off-by: Mimi Zohar --- include/linux/evm.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index 33a92471e463..7c10761916a2 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -9,6 +9,7 @@ #define _LINUX_EVM_H #include +#include #ifdef CONFIG_EVM extern enum integrity_status evm_verifyxattr(struct dentry *dentry, @@ -25,6 +26,9 @@ extern void evm_inode_post_setxattr(struct dentry *dentry, extern int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name); extern void evm_inode_post_removexattr(struct dentry *dentry, const char *xattr_name); +extern int evm_inode_init_security(struct inode *inode, + const struct xattr *xattr_array, + struct xattr *evm); #else #ifdef CONFIG_INTEGRITY static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, @@ -67,5 +71,12 @@ static inline void evm_inode_post_removexattr(struct dentry *dentry, return; } +static inline int evm_inode_init_security(struct inode *inode, + const struct xattr *xattr_array, + struct xattr *evm) +{ + return -EOPNOTSUPP; +} + #endif /* CONFIG_EVM_H */ #endif /* LINUX_EVM_H */ -- cgit v1.2.2 From 2960e6cb5f7c662b8edb6b0d2edc72095b4f5672 Mon Sep 17 00:00:00 2001 From: Dmitry Kasatkin Date: Fri, 6 May 2011 11:34:13 +0300 Subject: evm: additional parameter to pass integrity cache entry 'iint' Additional iint parameter allows to skip lookup in the cache. Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar --- include/linux/evm.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index 7c10761916a2..6d4e89b020c5 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -11,11 +11,14 @@ #include #include +struct integrity_iint_cache; + #ifdef CONFIG_EVM extern enum integrity_status evm_verifyxattr(struct dentry *dentry, const char *xattr_name, void *xattr_value, - size_t xattr_value_len); + size_t xattr_value_len, + struct integrity_iint_cache *iint); extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid); extern int evm_inode_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size); @@ -34,7 +37,8 @@ extern int evm_inode_init_security(struct inode *inode, static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, const char *xattr_name, void *xattr_value, - size_t xattr_value_len) + size_t xattr_value_len, + struct integrity_iint_cache *iint) { return INTEGRITY_UNKNOWN; } -- cgit v1.2.2 From 817b54aa45db03437c6d09a7693fc6926eb8e822 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Fri, 13 May 2011 12:53:38 -0400 Subject: evm: add evm_inode_setattr to prevent updating an invalid security.evm Permit changing of security.evm only when valid, unless in fixmode. Reported-by: Roberto Sassu Signed-off-by: Mimi Zohar --- include/linux/evm.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index 6d4e89b020c5..db5556dcdd27 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -19,6 +19,7 @@ extern enum integrity_status evm_verifyxattr(struct dentry *dentry, void *xattr_value, size_t xattr_value_len, struct integrity_iint_cache *iint); +extern int evm_inode_setattr(struct dentry *dentry, struct iattr *attr); extern void evm_inode_post_setattr(struct dentry *dentry, int ia_valid); extern int evm_inode_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size); @@ -44,6 +45,11 @@ static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, } #endif +static int evm_inode_setattr(struct dentry *dentry, struct iattr *attr) +{ + return 0; +} + static inline void evm_inode_post_setattr(struct dentry *dentry, int ia_valid) { return; -- cgit v1.2.2 From 63d77173266c1791f1553e9e8ccea65dc87c4485 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Sun, 31 Jul 2011 13:54:50 -0700 Subject: random: Add support for architectural random hooks Add support for architecture-specific hooks into the kernel-directed random number generator interfaces. This patchset does not use the architecture random number generator interfaces for the userspace-directed interfaces (/dev/random and /dev/urandom), thus eliminating the need to distinguish between them based on a pool pointer. Changes in version 3: - Moved the hooks from extract_entropy() to get_random_bytes(). - Changes the hooks to inlines. Signed-off-by: H. Peter Anvin Cc: Fenghua Yu Cc: Matt Mackall Cc: Herbert Xu Cc: "Theodore Ts'o" --- include/linux/random.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/random.h b/include/linux/random.h index fb7ab9de5f36..079cbba39a28 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -102,6 +102,19 @@ static inline void prandom32_seed(struct rnd_state *state, u64 seed) state->s3 = __seed(i, 15); } +#ifdef CONFIG_ARCH_RANDOM +# include +#else +static inline int arch_get_random_long(unsigned long *v) +{ + return 0; +} +static inline int arch_get_random_int(unsigned int *v) +{ + return 0; +} +#endif + #endif /* __KERNEL___ */ #endif /* _LINUX_RANDOM_H */ -- cgit v1.2.2 From 79ef0abcd85842bc12ffb3297b958565f060464c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 1 Aug 2011 13:02:17 +0900 Subject: ASoC: Implement new DC servo readback mode for late WM8994 revisions Later WM8994 devices implement a new DC servo readback mode with the register used to access the offset moved to register 0x59. Implement support for this and enable it on the appropriate devices. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index f3ee84284670..61529143db57 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -72,6 +72,7 @@ #define WM8994_DC_SERVO_2 0x55 #define WM8994_DC_SERVO_4 0x57 #define WM8994_DC_SERVO_READBACK 0x58 +#define WM8994_DC_SERVO_4E 0x59 #define WM8994_ANALOGUE_HP_1 0x60 #define WM8958_MIC_DETECT_1 0xD0 #define WM8958_MIC_DETECT_2 0xD1 -- cgit v1.2.2 From dd898b209577b83283bb62400c96426d7582e5a2 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 20 Jul 2011 22:28:58 +0100 Subject: regmap: Add kerneldoc for struct regmap_config Signed-off-by: Mark Brown --- include/linux/regmap.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 60a65cd7e1a0..cf8e4cffd386 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -20,6 +20,12 @@ struct i2c_client; struct spi_device; +/** + * Configuration for the register map of a device. + * + * @reg_bits: Number of bits in a register address, mandatory. + * @val_bits: Number of bits in a register value, mandatory. + */ struct regmap_config { int reg_bits; int val_bits; -- cgit v1.2.2 From 2e2ae66df37a14c9b33889b243b0ae1352ada1dd Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 20 Jul 2011 22:33:39 +0100 Subject: regmap: Allow devices to specify which registers are accessible This is currently unused but we need to know which registers exist and their properties in order to implement diagnostics like register map dumps and the cache features. We use callbacks partly because properties can vary at runtime (eg, through access locks on registers) and partly because big switch statements are a good compromise between readable code and small data size for providing information on big register maps. Signed-off-by: Mark Brown --- include/linux/regmap.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index cf8e4cffd386..aef2b36a8ccf 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -25,10 +25,23 @@ struct spi_device; * * @reg_bits: Number of bits in a register address, mandatory. * @val_bits: Number of bits in a register value, mandatory. + * + * @max_register: Optional, specifies the maximum valid register index. + * @writeable_register: Optional callback returning true if the register + * can be written to. + * @readable_register: Optional callback returning true if the register + * can be read from. + * @volatile_register: Optional callback returning true if the register + * value can't be cached. */ struct regmap_config { int reg_bits; int val_bits; + + unsigned int max_register; + bool (*writeable_reg)(struct device *dev, unsigned int reg); + bool (*readable_reg)(struct device *dev, unsigned int reg); + bool (*volatile_reg)(struct device *dev, unsigned int reg); }; typedef int (*regmap_hw_write)(struct device *dev, const void *data, -- cgit v1.2.2 From 18694886bddb2d4d905535a0149aeef3b5f9c936 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 8 Aug 2011 15:40:22 +0900 Subject: regmap: Add precious registers to the driver interface Some devices are sensitive to reads on their registers, especially for things like clear on read interrupt status registers. Avoid creating problems with these with things like debugfs by allowing drivers to tell the core about them. If a register is marked as precious then the core will not internally generate any reads of it. Signed-off-by: Mark Brown --- include/linux/regmap.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index aef2b36a8ccf..c878a4bf717e 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -33,6 +33,9 @@ struct spi_device; * can be read from. * @volatile_register: Optional callback returning true if the register * value can't be cached. + * @precious_register: Optional callback returning true if the rgister + * should not be read outside of a call from the driver + * (eg, a clear on read interrupt status register). */ struct regmap_config { int reg_bits; @@ -42,6 +45,7 @@ struct regmap_config { bool (*writeable_reg)(struct device *dev, unsigned int reg); bool (*readable_reg)(struct device *dev, unsigned int reg); bool (*volatile_reg)(struct device *dev, unsigned int reg); + bool (*precious_reg)(struct device *dev, unsigned int reg); }; typedef int (*regmap_hw_write)(struct device *dev, const void *data, -- cgit v1.2.2 From 90b44f8ffdf6c66d190ee71b330009bf7f11a208 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Mon, 25 Jul 2011 19:57:52 +0530 Subject: dmaengine: add helper function for slave_single For clients which require a single slave transfer and dont want to be bothered about the scatterlist api, this helper gives simple API for this transfer and creates single scatterlist for DMA API Idea from Russell King Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 8fbf40e0713c..0d738c95fe4e 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -24,6 +24,7 @@ #include #include #include +#include struct scatterlist; @@ -519,6 +520,16 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, (unsigned long)config); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( + struct dma_chan *chan, void *buf, size_t len, + enum dma_data_direction dir, unsigned long flags) +{ + struct scatterlist sg; + sg_init_one(&sg, buf, len); + + return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags); +} + static inline int dmaengine_terminate_all(struct dma_chan *chan) { return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0); -- cgit v1.2.2 From 84f8508a7d0357f841c2fa66b7c39d98c5b5e13e Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Wed, 3 Aug 2011 18:09:02 -0700 Subject: regulator: fix regulator/consumer.h kernel-doc warning Fix kernel-doc warning about internal/private data by marking it as "private:" so that kernel-doc will ignore it. Warning(include/linux/regulator/consumer.h:128): No description found for parameter 'ret' Signed-off-by: Randy Dunlap Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/consumer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 26f6ea4444e3..b47771aa5718 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -123,7 +123,7 @@ struct regulator_bulk_data { const char *supply; struct regulator *consumer; - /* Internal use */ + /* private: Internal use */ int ret; }; -- cgit v1.2.2 From 517f43e5a922d51ac960424de4f72676fe6a7390 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 01:20:07 +0200 Subject: bcma: add functions to scan cores needed on SoCs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The chip common and mips core have to be setup early in the boot process to get the cpu clock. bcma_bus_early_register() gets pointers to some space to store the core data and searches for the chip common and mips core and initializes chip common. After that was done and the kernel is out of early boot we just have to run bcma_bus_register() and it will search for the other cores, initialize and register them. The cores are getting the same numbers as before. Acked-by: Rafał Miłecki Signed-off-by: Hauke Mehrtens Acked-by: Ralf Baechle Signed-off-by: John W. Linville --- include/linux/bcma/bcma.h | 1 + include/linux/bcma/bcma_driver_chipcommon.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index 8c96654bef16..e31c9b462221 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -190,6 +190,7 @@ struct bcma_bus { struct bcma_device *mapped_core; struct list_head cores; u8 nr_cores; + u8 init_done:1; struct bcma_drv_cc drv_cc; struct bcma_drv_pci drv_pci; diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index a0f684615ae5..c8b4cf7f9fae 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -252,6 +252,7 @@ struct bcma_drv_cc { u32 status; u32 capabilities; u32 capabilities_ext; + u8 setup_done:1; /* Fast Powerup Delay constant */ u16 fast_pwrup_delay; struct bcma_chipcommon_pmu pmu; -- cgit v1.2.2 From ecd177c21640e92b059a71139f5850243a8f0942 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 01:20:08 +0200 Subject: bcma: add SOC bus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds support for using bcma on a Broadcom SoC as the system bus. An SoC like the bcm4716 could register this bus and use it to searches for the bcma cores and register the devices on this bus. BCMA_HOSTTYPE_NONE was intended for SoCs at first but BCMA_HOSTTYPE_SOC is a better name. Acked-by: Rafał Miłecki Signed-off-by: Hauke Mehrtens Acked-by: Ralf Baechle Signed-off-by: John W. Linville --- include/linux/bcma/bcma.h | 5 ++++- include/linux/bcma/bcma_soc.h | 16 ++++++++++++++++ 2 files changed, 20 insertions(+), 1 deletion(-) create mode 100644 include/linux/bcma/bcma_soc.h (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index e31c9b462221..c70cec59d80e 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -14,9 +14,9 @@ struct bcma_device; struct bcma_bus; enum bcma_hosttype { - BCMA_HOSTTYPE_NONE, BCMA_HOSTTYPE_PCI, BCMA_HOSTTYPE_SDIO, + BCMA_HOSTTYPE_SOC, }; struct bcma_chipinfo { @@ -138,6 +138,9 @@ struct bcma_device { u32 addr; u32 wrap; + void __iomem *io_addr; + void __iomem *io_wrap; + void *drvdata; struct list_head list; }; diff --git a/include/linux/bcma/bcma_soc.h b/include/linux/bcma/bcma_soc.h new file mode 100644 index 000000000000..4203c5593b9f --- /dev/null +++ b/include/linux/bcma/bcma_soc.h @@ -0,0 +1,16 @@ +#ifndef LINUX_BCMA_SOC_H_ +#define LINUX_BCMA_SOC_H_ + +#include + +struct bcma_soc { + struct bcma_bus bus; + struct bcma_device core_cc; + struct bcma_device core_mips; +}; + +int __init bcma_host_soc_register(struct bcma_soc *soc); + +int bcma_bus_register(struct bcma_bus *bus); + +#endif /* LINUX_BCMA_SOC_H_ */ -- cgit v1.2.2 From 21e0534ad7415559bb8dee0dc00e39646fed83c9 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 01:20:09 +0200 Subject: bcma: add mips driver This adds a mips driver to bcma. This is only found on embedded devices. For now the driver just initializes the irqs used on this system. Signed-off-by: Hauke Mehrtens Acked-by: Ralf Baechle Signed-off-by: John W. Linville --- include/linux/bcma/bcma.h | 3 ++ include/linux/bcma/bcma_driver_chipcommon.h | 13 ++++++++ include/linux/bcma/bcma_driver_mips.h | 49 +++++++++++++++++++++++++++++ 3 files changed, 65 insertions(+) create mode 100644 include/linux/bcma/bcma_driver_mips.h (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index c70cec59d80e..5dbd7055cb86 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -6,6 +6,7 @@ #include #include +#include #include /* SPROM sharing */ #include "bcma_regs.h" @@ -130,6 +131,7 @@ struct bcma_device { struct device dev; struct device *dma_dev; + unsigned int irq; bool dev_registered; @@ -197,6 +199,7 @@ struct bcma_bus { struct bcma_drv_cc drv_cc; struct bcma_drv_pci drv_pci; + struct bcma_drv_mips drv_mips; /* We decided to share SPROM struct with SSB as long as we do not need * any hacks for BCMA. This simplifies drivers code. */ diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index c8b4cf7f9fae..03cde8d22e5f 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -24,6 +24,7 @@ #define BCMA_CC_FLASHT_NONE 0x00000000 /* No flash */ #define BCMA_CC_FLASHT_STSER 0x00000100 /* ST serial flash */ #define BCMA_CC_FLASHT_ATSER 0x00000200 /* Atmel serial flash */ +#define BCMA_CC_FLASHT_NFLASH 0x00000200 #define BCMA_CC_FLASHT_PARA 0x00000700 /* Parallel flash */ #define BCMA_CC_CAP_PLLT 0x00038000 /* PLL Type */ #define BCMA_PLLTYPE_NONE 0x00000000 @@ -178,6 +179,7 @@ #define BCMA_CC_PROG_CFG 0x0120 #define BCMA_CC_PROG_WAITCNT 0x0124 #define BCMA_CC_FLASH_CFG 0x0128 +#define BCMA_CC_FLASH_CFG_DS 0x0010 /* Data size, 0=8bit, 1=16bit */ #define BCMA_CC_FLASH_WAITCNT 0x012C /* 0x1E0 is defined as shared BCMA_CLKCTLST */ #define BCMA_CC_HW_WORKAROUND 0x01E4 /* Hardware workaround (rev >= 20) */ @@ -247,6 +249,14 @@ struct bcma_chipcommon_pmu { u32 crystalfreq; /* The active crystal frequency (in kHz) */ }; +#ifdef CONFIG_BCMA_DRIVER_MIPS +struct bcma_pflash { + u8 buswidth; + u32 window; + u32 window_size; +}; +#endif /* CONFIG_BCMA_DRIVER_MIPS */ + struct bcma_drv_cc { struct bcma_device *core; u32 status; @@ -256,6 +266,9 @@ struct bcma_drv_cc { /* Fast Powerup Delay constant */ u16 fast_pwrup_delay; struct bcma_chipcommon_pmu pmu; +#ifdef CONFIG_BCMA_DRIVER_MIPS + struct bcma_pflash pflash; +#endif /* CONFIG_BCMA_DRIVER_MIPS */ }; /* Register access */ diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h new file mode 100644 index 000000000000..82b3bfd32c76 --- /dev/null +++ b/include/linux/bcma/bcma_driver_mips.h @@ -0,0 +1,49 @@ +#ifndef LINUX_BCMA_DRIVER_MIPS_H_ +#define LINUX_BCMA_DRIVER_MIPS_H_ + +#define BCMA_MIPS_IPSFLAG 0x0F08 +/* which sbflags get routed to mips interrupt 1 */ +#define BCMA_MIPS_IPSFLAG_IRQ1 0x0000003F +#define BCMA_MIPS_IPSFLAG_IRQ1_SHIFT 0 +/* which sbflags get routed to mips interrupt 2 */ +#define BCMA_MIPS_IPSFLAG_IRQ2 0x00003F00 +#define BCMA_MIPS_IPSFLAG_IRQ2_SHIFT 8 +/* which sbflags get routed to mips interrupt 3 */ +#define BCMA_MIPS_IPSFLAG_IRQ3 0x003F0000 +#define BCMA_MIPS_IPSFLAG_IRQ3_SHIFT 16 +/* which sbflags get routed to mips interrupt 4 */ +#define BCMA_MIPS_IPSFLAG_IRQ4 0x3F000000 +#define BCMA_MIPS_IPSFLAG_IRQ4_SHIFT 24 + +/* MIPS 74K core registers */ +#define BCMA_MIPS_MIPS74K_CORECTL 0x0000 +#define BCMA_MIPS_MIPS74K_EXCEPTBASE 0x0004 +#define BCMA_MIPS_MIPS74K_BIST 0x000C +#define BCMA_MIPS_MIPS74K_INTMASK_INT0 0x0014 +#define BCMA_MIPS_MIPS74K_INTMASK(int) \ + ((int) * 4 + BCMA_MIPS_MIPS74K_INTMASK_INT0) +#define BCMA_MIPS_MIPS74K_NMIMASK 0x002C +#define BCMA_MIPS_MIPS74K_GPIOSEL 0x0040 +#define BCMA_MIPS_MIPS74K_GPIOOUT 0x0044 +#define BCMA_MIPS_MIPS74K_GPIOEN 0x0048 +#define BCMA_MIPS_MIPS74K_CLKCTLST 0x01E0 + +#define BCMA_MIPS_OOBSELOUTA30 0x100 + +struct bcma_device; + +struct bcma_drv_mips { + struct bcma_device *core; + u8 setup_done:1; + unsigned int assigned_irqs; +}; + +#ifdef CONFIG_BCMA_DRIVER_MIPS +extern void bcma_core_mips_init(struct bcma_drv_mips *mcore); +#else +static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { } +#endif + +extern unsigned int bcma_core_mips_irq(struct bcma_device *dev); + +#endif /* LINUX_BCMA_DRIVER_MIPS_H_ */ -- cgit v1.2.2 From e3afe0e5be7576ac1282ea9fbbc9b352bb379227 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 01:20:10 +0200 Subject: bcma: add serial console support This adds support for serial console to bcma, when operating on an SoC. Signed-off-by: Hauke Mehrtens Acked-by: Ralf Baechle Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 03cde8d22e5f..b9a930eb44cd 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -241,6 +241,9 @@ #define BCMA_CC_SPROM 0x0800 /* SPROM beginning */ #define BCMA_CC_SPROM_PCIE6 0x0830 /* SPROM beginning on PCIe rev >= 6 */ +/* ALP clock on pre-PMU chips */ +#define BCMA_CC_PMU_ALP_CLOCK 20000000 + /* Data for the PMU, if available. * Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU) */ @@ -255,6 +258,14 @@ struct bcma_pflash { u32 window; u32 window_size; }; + +struct bcma_serial_port { + void *regs; + unsigned long clockspeed; + unsigned int irq; + unsigned int baud_base; + unsigned int reg_shift; +}; #endif /* CONFIG_BCMA_DRIVER_MIPS */ struct bcma_drv_cc { @@ -268,6 +279,9 @@ struct bcma_drv_cc { struct bcma_chipcommon_pmu pmu; #ifdef CONFIG_BCMA_DRIVER_MIPS struct bcma_pflash pflash; + + int nr_serial_ports; + struct bcma_serial_port serial_ports[4]; #endif /* CONFIG_BCMA_DRIVER_MIPS */ }; -- cgit v1.2.2 From 908debc8da0d5a91418f71c6a462f62bd2ac69ef Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Jul 2011 01:20:11 +0200 Subject: bcma: get CPU clock Add method to return the clock of the CPU. This is needed by the arch code to calculate the mips_hpt_frequency. Signed-off-by: Hauke Mehrtens Acked-by: Ralf Baechle Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 39 +++++++++++++++++++++++++++++ include/linux/bcma/bcma_driver_mips.h | 2 ++ 2 files changed, 41 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index b9a930eb44cd..6083725dd22e 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -241,8 +241,47 @@ #define BCMA_CC_SPROM 0x0800 /* SPROM beginning */ #define BCMA_CC_SPROM_PCIE6 0x0830 /* SPROM beginning on PCIe rev >= 6 */ +/* Divider allocation in 4716/47162/5356 */ +#define BCMA_CC_PMU5_MAINPLL_CPU 1 +#define BCMA_CC_PMU5_MAINPLL_MEM 2 +#define BCMA_CC_PMU5_MAINPLL_SSB 3 + +/* PLL usage in 4716/47162 */ +#define BCMA_CC_PMU4716_MAINPLL_PLL0 12 + +/* PLL usage in 5356/5357 */ +#define BCMA_CC_PMU5356_MAINPLL_PLL0 0 +#define BCMA_CC_PMU5357_MAINPLL_PLL0 0 + +/* 4706 PMU */ +#define BCMA_CC_PMU4706_MAINPLL_PLL0 0 + /* ALP clock on pre-PMU chips */ #define BCMA_CC_PMU_ALP_CLOCK 20000000 +/* HT clock for systems with PMU-enabled chipcommon */ +#define BCMA_CC_PMU_HT_CLOCK 80000000 + +/* PMU rev 5 (& 6) */ +#define BCMA_CC_PPL_P1P2_OFF 0 +#define BCMA_CC_PPL_P1_MASK 0x0f000000 +#define BCMA_CC_PPL_P1_SHIFT 24 +#define BCMA_CC_PPL_P2_MASK 0x00f00000 +#define BCMA_CC_PPL_P2_SHIFT 20 +#define BCMA_CC_PPL_M14_OFF 1 +#define BCMA_CC_PPL_MDIV_MASK 0x000000ff +#define BCMA_CC_PPL_MDIV_WIDTH 8 +#define BCMA_CC_PPL_NM5_OFF 2 +#define BCMA_CC_PPL_NDIV_MASK 0xfff00000 +#define BCMA_CC_PPL_NDIV_SHIFT 20 +#define BCMA_CC_PPL_FMAB_OFF 3 +#define BCMA_CC_PPL_MRAT_MASK 0xf0000000 +#define BCMA_CC_PPL_MRAT_SHIFT 28 +#define BCMA_CC_PPL_ABRAT_MASK 0x08000000 +#define BCMA_CC_PPL_ABRAT_SHIFT 27 +#define BCMA_CC_PPL_FDIV_MASK 0x07ffffff +#define BCMA_CC_PPL_PLLCTL_OFF 4 +#define BCMA_CC_PPL_PCHI_OFF 5 +#define BCMA_CC_PPL_PCHI_MASK 0x0000003f /* Data for the PMU, if available. * Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU) diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 82b3bfd32c76..c0043645cdcb 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -44,6 +44,8 @@ extern void bcma_core_mips_init(struct bcma_drv_mips *mcore); static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { } #endif +extern u32 bcma_cpu_clock(struct bcma_drv_mips *mcore); + extern unsigned int bcma_core_mips_irq(struct bcma_device *dev); #endif /* LINUX_BCMA_DRIVER_MIPS_H_ */ -- cgit v1.2.2 From 3566cc9d90e3f774cea47de6986c59a09090ce2b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Aug 2011 10:23:22 +0900 Subject: regmap: Fix kerneldoc errors for regmap Field names didn't match between the documentation and the code. Signed-off-by: Mark Brown --- include/linux/regmap.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index c878a4bf717e..4de137bc16a7 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -27,15 +27,15 @@ struct spi_device; * @val_bits: Number of bits in a register value, mandatory. * * @max_register: Optional, specifies the maximum valid register index. - * @writeable_register: Optional callback returning true if the register - * can be written to. - * @readable_register: Optional callback returning true if the register - * can be read from. - * @volatile_register: Optional callback returning true if the register - * value can't be cached. - * @precious_register: Optional callback returning true if the rgister - * should not be read outside of a call from the driver - * (eg, a clear on read interrupt status register). + * @writeable_reg: Optional callback returning true if the register + * can be written to. + * @readable_reg: Optional callback returning true if the register + * can be read from. + * @volatile_reg: Optional callback returning true if the register + * value can't be cached. + * @precious_reg: Optional callback returning true if the rgister + * should not be read outside of a call from the driver + * (eg, a clear on read interrupt status register). */ struct regmap_config { int reg_bits; -- cgit v1.2.2 From c17ca3f5a2c98784739bbbcc3f6b6ee177f4f201 Mon Sep 17 00:00:00 2001 From: Eric Andersson Date: Tue, 9 Aug 2011 00:06:37 -0700 Subject: Input: add driver for Bosch Sensortec's BMA150 accelerometer Signed-off-by: Albert Zhang Signed-off-by: Eric Andersson Acked-by: Jonathan Cameron Reviewed-by: Alan Cox Signed-off-by: Dmitry Torokhov --- include/linux/bma150.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/linux/bma150.h (limited to 'include/linux') diff --git a/include/linux/bma150.h b/include/linux/bma150.h new file mode 100644 index 000000000000..7911fda23bb4 --- /dev/null +++ b/include/linux/bma150.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2011 Bosch Sensortec GmbH + * Copyright (c) 2011 Unixphere + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _BMA150_H_ +#define _BMA150_H_ + +#define BMA150_DRIVER "bma150" + +struct bma150_cfg { + bool any_motion_int; /* Set to enable any-motion interrupt */ + bool hg_int; /* Set to enable high-G interrupt */ + bool lg_int; /* Set to enable low-G interrupt */ + unsigned char any_motion_dur; /* Any-motion duration */ + unsigned char any_motion_thres; /* Any-motion threshold */ + unsigned char hg_hyst; /* High-G hysterisis */ + unsigned char hg_dur; /* High-G duration */ + unsigned char hg_thres; /* High-G threshold */ + unsigned char lg_hyst; /* Low-G hysterisis */ + unsigned char lg_dur; /* Low-G duration */ + unsigned char lg_thres; /* Low-G threshold */ + unsigned char range; /* BMA0150_RANGE_xxx (in G) */ + unsigned char bandwidth; /* BMA0150_BW_xxx (in Hz) */ +}; + +struct bma150_platform_data { + struct bma150_cfg cfg; + int (*irq_gpio_cfg)(void); +}; + +#endif /* _BMA150_H_ */ -- cgit v1.2.2 From 790923e56be795e14eaaeb3305cb4e171cd0a72f Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Aug 2011 10:41:37 +0900 Subject: regmap: Remove unused type and list fields from bus interface We no longer enumerate the bus types, we rely on the driver telling us this on init. Signed-off-by: Mark Brown --- include/linux/regmap.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 4de137bc16a7..20a8fbf19d44 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -60,8 +60,6 @@ typedef int (*regmap_hw_read)(struct device *dev, /** * Description of a hardware bus for the register map infrastructure. * - * @list: Internal use. - * @type: Bus type, used to identify bus to be used for a device. * @write: Write operation. * @gather_write: Write operation with split register/value, return -ENOTSUPP * if not implemented on a given device. @@ -73,8 +71,6 @@ typedef int (*regmap_hw_read)(struct device *dev, * a read. */ struct regmap_bus { - struct list_head list; - struct bus_type *type; regmap_hw_write write; regmap_hw_gather_write gather_write; regmap_hw_read read; -- cgit v1.2.2 From 454496fd05b1463efa46ec7a42576e3d319cc291 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sat, 23 Jul 2011 11:10:11 +0200 Subject: ssb: define boardflags MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit They are SPROM specific, so all should be defined in ssb code. Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/ssb/ssb_regs.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index efbf459d571c..98941203a27f 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -462,6 +462,46 @@ #define SSB_SPROM8_OFDM5GLPO 0x014A /* 5.2GHz OFDM power offset */ #define SSB_SPROM8_OFDM5GHPO 0x014E /* 5.8GHz OFDM power offset */ +/* Values for boardflags_lo read from SPROM */ +#define SSB_BFL_BTCOEXIST 0x0001 /* implements Bluetooth coexistance */ +#define SSB_BFL_PACTRL 0x0002 /* GPIO 9 controlling the PA */ +#define SSB_BFL_AIRLINEMODE 0x0004 /* implements GPIO 13 radio disable indication */ +#define SSB_BFL_RSSI 0x0008 /* software calculates nrssi slope. */ +#define SSB_BFL_ENETSPI 0x0010 /* has ephy roboswitch spi */ +#define SSB_BFL_XTAL_NOSLOW 0x0020 /* no slow clock available */ +#define SSB_BFL_CCKHIPWR 0x0040 /* can do high power CCK transmission */ +#define SSB_BFL_ENETADM 0x0080 /* has ADMtek switch */ +#define SSB_BFL_ENETVLAN 0x0100 /* can do vlan */ +#define SSB_BFL_AFTERBURNER 0x0200 /* supports Afterburner mode */ +#define SSB_BFL_NOPCI 0x0400 /* board leaves PCI floating */ +#define SSB_BFL_FEM 0x0800 /* supports the Front End Module */ +#define SSB_BFL_EXTLNA 0x1000 /* has an external LNA */ +#define SSB_BFL_HGPA 0x2000 /* had high gain PA */ +#define SSB_BFL_BTCMOD 0x4000 /* BFL_BTCOEXIST is given in alternate GPIOs */ +#define SSB_BFL_ALTIQ 0x8000 /* alternate I/Q settings */ + +/* Values for boardflags_hi read from SPROM */ +#define SSB_BFH_NOPA 0x0001 /* has no PA */ +#define SSB_BFH_RSSIINV 0x0002 /* RSSI uses positive slope (not TSSI) */ +#define SSB_BFH_PAREF 0x0004 /* uses the PARef LDO */ +#define SSB_BFH_3TSWITCH 0x0008 /* uses a triple throw switch shared with bluetooth */ +#define SSB_BFH_PHASESHIFT 0x0010 /* can support phase shifter */ +#define SSB_BFH_BUCKBOOST 0x0020 /* has buck/booster */ +#define SSB_BFH_FEM_BT 0x0040 /* has FEM and switch to share antenna with bluetooth */ + +/* Values for boardflags2_lo read from SPROM */ +#define SSB_BFL2_RXBB_INT_REG_DIS 0x0001 /* external RX BB regulator present */ +#define SSB_BFL2_APLL_WAR 0x0002 /* alternative A-band PLL settings implemented */ +#define SSB_BFL2_TXPWRCTRL_EN 0x0004 /* permits enabling TX Power Control */ +#define SSB_BFL2_2X4_DIV 0x0008 /* 2x4 diversity switch */ +#define SSB_BFL2_5G_PWRGAIN 0x0010 /* supports 5G band power gain */ +#define SSB_BFL2_PCIEWAR_OVR 0x0020 /* overrides ASPM and Clkreq settings */ +#define SSB_BFL2_CAESERS_BRD 0x0040 /* is Caesers board (unused) */ +#define SSB_BFL2_BTC3WIRE 0x0080 /* used 3-wire bluetooth coexist */ +#define SSB_BFL2_SKWRKFEM_BRD 0x0100 /* 4321mcm93 uses Skyworks FEM */ +#define SSB_BFL2_SPUR_WAR 0x0200 /* has a workaround for clock-harmonic spurs */ +#define SSB_BFL2_GPLL_WAR 0x0400 /* altenative G-band PLL settings implemented */ + /* Values for SSB_SPROM1_BINF_CCODE */ enum { SSB_SPROM1CCODE_WORLD = 0, -- cgit v1.2.2 From 4ea5454203d991ec85264f64f89ca8855fce69b0 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Wed, 10 Aug 2011 14:02:07 +0200 Subject: HID: Fix race condition between driver core and ll-driver HID low level drivers register new devices with the HID core which then adds the devices to the HID bus. The HID bus normally immediately probes an appropriate driver which then handles HID input for this device. The ll driver now uses the hid_input_report() function to report input events for a specific device. However, if the HID bus unloads the driver at the same time (for instance via a call to /sys/bus/hid/devices//unbind) then the hdev->driver pointer may be used by hid_input_report() and hid_device_remove() at the same time which may cause hdev->driver to point to invalid memory. This fix adds a semaphore to every hid device which protects hdev->driver from asynchronous access. This semaphore is locked during driver *_probe and *_remove and also inside hid_input_report(). The *_probe and *_remove functions may sleep so the semaphore is good here, however, hid_input_report() is in atomic context and hence only uses down_trylock(). If it cannot acquire the lock it simply drops the input package. The low-level drivers report input events synchronously so hid_input_report() should never be entered twice at the same time on the same device. Hence, the lock should always be available. But if the driver is currently probed/removed then the lock is not available and dropping the package should be safe because this is what would have happened if the package arrived some milliseconds earlier/later. This also fixes another race condition while probing drivers: First the *_probe function of the driver is called and only if that succeeds, the related input device of hidinput is registered. If the low level driver reports input events after the *_probe function returned but before the input device is registered, then a NULL pointer dereference will occur. (Equivalently on driver remove function). This is not possible anymore, since the semaphore lock drops all incoming packages until the driver/device is fully initialized. Signed-off-by: David Herrmann Signed-off-by: Jiri Kosina --- include/linux/hid.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 9cf8e7ae7450..9c02d07af0d1 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -71,6 +71,7 @@ #include #include #include +#include /* * We parse each description item into this structure. Short items data @@ -475,6 +476,7 @@ struct hid_device { /* device report descriptor */ unsigned country; /* HID country */ struct hid_report_enum report_enum[HID_REPORT_TYPES]; + struct semaphore driver_lock; /* protects the current driver */ struct device dev; /* device */ struct hid_driver *driver; struct hid_ll_driver *ll_driver; -- cgit v1.2.2 From 4b41308d2d0398409620613c7eaaaf52c738b042 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Wed, 10 Aug 2011 10:37:59 -0700 Subject: alarmtimers: Change alarmtimer functions to return alarmtimer_restart values In order to properly fix the denial of service issue with high freq periodic alarm timers, we need to push the re-arming logic into the alarm timer handler, much as the hrtimer code does. This patch introduces alarmtimer_restart enum and changes the alarmtimer handler declarations to use it as a return value. Further, to ease following changes, it extends the alarmtimer handler functions to also take the time at expiration. No logic is yet modified. CC: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/alarmtimer.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index c5d6095b46f8..0289eb29e794 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -13,6 +13,11 @@ enum alarmtimer_type { ALARM_NUMTYPE, }; +enum alarmtimer_restart { + ALARMTIMER_NORESTART, + ALARMTIMER_RESTART, +}; + /** * struct alarm - Alarm timer structure * @node: timerqueue node for adding to the event list this value @@ -26,14 +31,14 @@ enum alarmtimer_type { struct alarm { struct timerqueue_node node; ktime_t period; - void (*function)(struct alarm *); + enum alarmtimer_restart (*function)(struct alarm *, ktime_t now); enum alarmtimer_type type; bool enabled; void *data; }; void alarm_init(struct alarm *alarm, enum alarmtimer_type type, - void (*function)(struct alarm *)); + enum alarmtimer_restart (*function)(struct alarm *, ktime_t)); void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period); void alarm_cancel(struct alarm *alarm); -- cgit v1.2.2 From dce75a8c71819ed4c7efdcd53c9b6f6356dc8cb5 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Wed, 10 Aug 2011 11:31:03 -0700 Subject: alarmtimers: Add alarm_forward functionality In order to avoid wasting time expiring and re-adding very high freq periodic alarmtimers, introduce alarm_forward() which is similar to hrtimer_forward and moves the timer to the next future expiration time and returns the number of overruns. CC: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/alarmtimer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index 0289eb29e794..17535963b274 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -42,4 +42,6 @@ void alarm_init(struct alarm *alarm, enum alarmtimer_type type, void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period); void alarm_cancel(struct alarm *alarm); +u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); + #endif -- cgit v1.2.2 From 9e26476243e438f4534a562660c1296a15a9e202 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Wed, 10 Aug 2011 12:09:24 -0700 Subject: alarmtimers: Remove period from alarm structure Now that periodic alarmtimers are managed by the handler function, remove the period value from the alarm structure and let the handlers manage the interval on their own. CC: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/alarmtimer.h | 3 +-- include/linux/posix-timers.h | 5 ++++- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index 17535963b274..c854a8efa863 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -30,7 +30,6 @@ enum alarmtimer_restart { */ struct alarm { struct timerqueue_node node; - ktime_t period; enum alarmtimer_restart (*function)(struct alarm *, ktime_t now); enum alarmtimer_type type; bool enabled; @@ -39,7 +38,7 @@ struct alarm { void alarm_init(struct alarm *alarm, enum alarmtimer_type type, enum alarmtimer_restart (*function)(struct alarm *, ktime_t)); -void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period); +void alarm_start(struct alarm *alarm, ktime_t start); void alarm_cancel(struct alarm *alarm); u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 959c14132f46..042058fdb0af 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -81,7 +81,10 @@ struct k_itimer { unsigned long incr; unsigned long expires; } mmtimer; - struct alarm alarmtimer; + struct { + struct alarm alarmtimer; + ktime_t interval; + } alarm; struct rcu_head rcu; } it; }; -- cgit v1.2.2 From a28cde81ab13cc251748a4c4ef06883dd09a10ea Mon Sep 17 00:00:00 2001 From: John Stultz Date: Wed, 10 Aug 2011 12:30:21 -0700 Subject: alarmtimers: Add more refined alarm state tracking In order to allow for functionality like try_to_cancel, add more refined state tracking (similar to hrtimers). CC: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/alarmtimer.h | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index c854a8efa863..304124a6c982 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -18,6 +18,11 @@ enum alarmtimer_restart { ALARMTIMER_RESTART, }; + +#define ALARMTIMER_STATE_INACTIVE 0x00 +#define ALARMTIMER_STATE_ENQUEUED 0x01 +#define ALARMTIMER_STATE_CALLBACK 0x02 + /** * struct alarm - Alarm timer structure * @node: timerqueue node for adding to the event list this value @@ -32,7 +37,7 @@ struct alarm { struct timerqueue_node node; enum alarmtimer_restart (*function)(struct alarm *, ktime_t now); enum alarmtimer_type type; - bool enabled; + int state; void *data; }; @@ -43,4 +48,31 @@ void alarm_cancel(struct alarm *alarm); u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); +/* + * A alarmtimer is active, when it is enqueued into timerqueue or the + * callback function is running. + */ +static inline int alarmtimer_active(const struct alarm *timer) +{ + return timer->state != ALARMTIMER_STATE_INACTIVE; +} + +/* + * Helper function to check, whether the timer is on one of the queues + */ +static inline int alarmtimer_is_queued(struct alarm *timer) +{ + return timer->state & ALARMTIMER_STATE_ENQUEUED; +} + +/* + * Helper function to check, whether the timer is running the callback + * function + */ +static inline int alarmtimer_callback_running(struct alarm *timer) +{ + return timer->state & ALARMTIMER_STATE_CALLBACK; +} + + #endif -- cgit v1.2.2 From 9082c465a5403f4a98734193e078552991a2e283 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Wed, 10 Aug 2011 12:41:36 -0700 Subject: alarmtimers: Add try_to_cancel functionality There's a number of edge cases when cancelling a alarm, so to be sure we accurately do so, introduce try_to_cancel, which returns proper failure errors if it cannot. Also modify cancel to spin until the alarm is properly disabled. CC: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/alarmtimer.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index 304124a6c982..975009e1cbe6 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -44,7 +44,8 @@ struct alarm { void alarm_init(struct alarm *alarm, enum alarmtimer_type type, enum alarmtimer_restart (*function)(struct alarm *, ktime_t)); void alarm_start(struct alarm *alarm, ktime_t start); -void alarm_cancel(struct alarm *alarm); +int alarm_try_to_cancel(struct alarm *alarm); +int alarm_cancel(struct alarm *alarm); u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); -- cgit v1.2.2 From b75ef8b44b1cb95f5a26484b0e2fe37a63b12b44 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Wed, 10 Aug 2011 15:18:39 -0400 Subject: Tracepoint: Dissociate from module mutex Copy the information needed from struct module into a local module list held within tracepoint.c from within the module coming/going notifier. This vastly simplifies locking of tracepoint registration / unregistration, because we don't have to take the module mutex to register and unregister tracepoints anymore. Steven Rostedt ran into dependency problems related to modules mutex vs kprobes mutex vs ftrace mutex vs tracepoint mutex that seems to be hard to fix without removing this dependency between tracepoint and module mutex. (note: it should be investigated whether kprobes could benefit of being dissociated from the modules mutex too.) This also fixes module handling of tracepoint list iterators, because it was expecting the list to be sorted by pointer address. Given we have control on our own list now, it's OK to sort this list which has tracepoints as its only purpose. The reason why this sorting is required is to handle the fact that seq files (and any read() operation from user-space) cannot hold the tracepoint mutex across multiple calls, so list entries may vanish between calls. With sorting, the tracepoint iterator becomes usable even if the list don't contain the exact item pointed to by the iterator anymore. Signed-off-by: Mathieu Desnoyers Acked-by: Jason Baron CC: Ingo Molnar CC: Lai Jiangshan CC: Peter Zijlstra CC: Thomas Gleixner CC: Masami Hiramatsu Link: http://lkml.kernel.org/r/20110810191839.GC8525@Krystal Signed-off-by: Steven Rostedt --- include/linux/module.h | 12 ------------ include/linux/tracepoint.h | 25 +++++++++++-------------- 2 files changed, 11 insertions(+), 26 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 1c30087a2d81..863921637d9f 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -580,9 +580,6 @@ int unregister_module_notifier(struct notifier_block * nb); extern void print_modules(void); -extern void module_update_tracepoints(void); -extern int module_get_iter_tracepoints(struct tracepoint_iter *iter); - #else /* !CONFIG_MODULES... */ #define EXPORT_SYMBOL(sym) #define EXPORT_SYMBOL_GPL(sym) @@ -698,15 +695,6 @@ static inline int unregister_module_notifier(struct notifier_block * nb) static inline void print_modules(void) { } - -static inline void module_update_tracepoints(void) -{ -} - -static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter) -{ - return 0; -} #endif /* CONFIG_MODULES */ #ifdef CONFIG_SYSFS diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index d530a4460a0b..df0a779c1bbd 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -54,8 +54,18 @@ extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe, void *data); extern void tracepoint_probe_update_all(void); +#ifdef CONFIG_MODULES +struct tp_module { + struct list_head list; + unsigned int num_tracepoints; + struct tracepoint * const *tracepoints_ptrs; +}; +#endif /* CONFIG_MODULES */ + struct tracepoint_iter { - struct module *module; +#ifdef CONFIG_MODULES + struct tp_module *module; +#endif /* CONFIG_MODULES */ struct tracepoint * const *tracepoint; }; @@ -63,8 +73,6 @@ extern void tracepoint_iter_start(struct tracepoint_iter *iter); extern void tracepoint_iter_next(struct tracepoint_iter *iter); extern void tracepoint_iter_stop(struct tracepoint_iter *iter); extern void tracepoint_iter_reset(struct tracepoint_iter *iter); -extern int tracepoint_get_iter_range(struct tracepoint * const **tracepoint, - struct tracepoint * const *begin, struct tracepoint * const *end); /* * tracepoint_synchronize_unregister must be called between the last tracepoint @@ -78,17 +86,6 @@ static inline void tracepoint_synchronize_unregister(void) #define PARAMS(args...) args -#ifdef CONFIG_TRACEPOINTS -extern -void tracepoint_update_probe_range(struct tracepoint * const *begin, - struct tracepoint * const *end); -#else -static inline -void tracepoint_update_probe_range(struct tracepoint * const *begin, - struct tracepoint * const *end) -{ } -#endif /* CONFIG_TRACEPOINTS */ - #endif /* _LINUX_TRACEPOINT_H */ /* -- cgit v1.2.2 From e1c9b23adbe86c725738402857397d7a29f9d6ef Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Thu, 11 Aug 2011 00:22:51 -0400 Subject: evm: building without EVM enabled fixes - Missing 'inline' on evm_inode_setattr() definition. Introduced by commit 817b54aa45db ("evm: add evm_inode_setattr to prevent updating an invalid security.evm"). - Missing security_old_inode_init_security() stub function definition. Caused by commit 9d8f13ba3f48 ("security: new security_inode_init_security API adds function callback"). Reported-by: Stephen Rothwell Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/evm.h | 2 +- include/linux/security.h | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index db5556dcdd27..62deb6557d37 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -45,7 +45,7 @@ static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, } #endif -static int evm_inode_setattr(struct dentry *dentry, struct iattr *attr) +static inline int evm_inode_setattr(struct dentry *dentry, struct iattr *attr) { return 0; } diff --git a/include/linux/security.h b/include/linux/security.h index 1c528b19a329..f399cf10e2a8 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -2048,6 +2048,13 @@ static inline int security_inode_init_security(struct inode *inode, return -EOPNOTSUPP; } +int security_old_inode_init_security(struct inode *inode, struct inode *dir, + const struct qstr *qstr, char **name, + void **value, size_t *len) +{ + return -EOPNOTSUPP; +} + static inline int security_inode_create(struct inode *dir, struct dentry *dentry, int mode) -- cgit v1.2.2 From 5a4730ba9517cf2793175991243436a24b1db18f Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Thu, 11 Aug 2011 00:22:52 -0400 Subject: evm: fix evm_inode_init_security return code evm_inode_init_security() should return 0, when EVM is not enabled. (Returning an error is a remnant of evm_inode_post_init_security.) Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/evm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index 62deb6557d37..ea603c9e775d 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -85,7 +85,7 @@ static inline int evm_inode_init_security(struct inode *inode, const struct xattr *xattr_array, struct xattr *evm) { - return -EOPNOTSUPP; + return 0; } #endif /* CONFIG_EVM_H */ -- cgit v1.2.2 From c18eee31812d42ecd0aa5c39d21d41c15b30eaab Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 10 Aug 2011 19:25:40 +0900 Subject: ASoC: Add bitfield definitions for WM8958 MICBIAS registers Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 38 ++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 61529143db57..64bf91e4dfa9 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -1921,6 +1921,44 @@ #define WM8994_LDO2_DISCH_SHIFT 0 /* LDO2_DISCH */ #define WM8994_LDO2_DISCH_WIDTH 1 /* LDO2_DISCH */ +/* + * R61 (0x3D) - MICBIAS1 + */ +#define WM8958_MICB1_RATE 0x0020 /* MICB1_RATE */ +#define WM8958_MICB1_RATE_MASK 0x0020 /* MICB1_RATE */ +#define WM8958_MICB1_RATE_SHIFT 5 /* MICB1_RATE */ +#define WM8958_MICB1_RATE_WIDTH 1 /* MICB1_RATE */ +#define WM8958_MICB1_MODE 0x0010 /* MICB1_MODE */ +#define WM8958_MICB1_MODE_MASK 0x0010 /* MICB1_MODE */ +#define WM8958_MICB1_MODE_SHIFT 4 /* MICB1_MODE */ +#define WM8958_MICB1_MODE_WIDTH 1 /* MICB1_MODE */ +#define WM8958_MICB1_LVL_MASK 0x000E /* MICB1_LVL - [3:1] */ +#define WM8958_MICB1_LVL_SHIFT 1 /* MICB1_LVL - [3:1] */ +#define WM8958_MICB1_LVL_WIDTH 3 /* MICB1_LVL - [3:1] */ +#define WM8958_MICB1_DISCH 0x0001 /* MICB1_DISCH */ +#define WM8958_MICB1_DISCH_MASK 0x0001 /* MICB1_DISCH */ +#define WM8958_MICB1_DISCH_SHIFT 0 /* MICB1_DISCH */ +#define WM8958_MICB1_DISCH_WIDTH 1 /* MICB1_DISCH */ + +/* + * R62 (0x3E) - MICBIAS2 + */ +#define WM8958_MICB2_RATE 0x0020 /* MICB2_RATE */ +#define WM8958_MICB2_RATE_MASK 0x0020 /* MICB2_RATE */ +#define WM8958_MICB2_RATE_SHIFT 5 /* MICB2_RATE */ +#define WM8958_MICB2_RATE_WIDTH 1 /* MICB2_RATE */ +#define WM8958_MICB2_MODE 0x0010 /* MICB2_MODE */ +#define WM8958_MICB2_MODE_MASK 0x0010 /* MICB2_MODE */ +#define WM8958_MICB2_MODE_SHIFT 4 /* MICB2_MODE */ +#define WM8958_MICB2_MODE_WIDTH 1 /* MICB2_MODE */ +#define WM8958_MICB2_LVL_MASK 0x000E /* MICB2_LVL - [3:1] */ +#define WM8958_MICB2_LVL_SHIFT 1 /* MICB2_LVL - [3:1] */ +#define WM8958_MICB2_LVL_WIDTH 3 /* MICB2_LVL - [3:1] */ +#define WM8958_MICB2_DISCH 0x0001 /* MICB2_DISCH */ +#define WM8958_MICB2_DISCH_MASK 0x0001 /* MICB2_DISCH */ +#define WM8958_MICB2_DISCH_SHIFT 0 /* MICB2_DISCH */ +#define WM8958_MICB2_DISCH_WIDTH 1 /* MICB2_DISCH */ + /* * R76 (0x4C) - Charge Pump (1) */ -- cgit v1.2.2 From 32e9de846be885444358b67267f837088c05e0c2 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Wed, 10 Aug 2011 23:53:31 +0300 Subject: nl80211/cfg80211: Allow SSID to be specified in new beacon command This makes it easier for drivers that generate Beacon and Probe Response frames internally (in firmware most likely) in AP mode. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 8ad70dcac3f9..227ee9a0ff1a 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -161,6 +161,9 @@ * @NL80211_CMD_SET_BEACON: set the beacon on an access point interface * using the %NL80211_ATTR_BEACON_INTERVAL, %NL80211_ATTR_DTIM_PERIOD, * %NL80211_ATTR_BEACON_HEAD and %NL80211_ATTR_BEACON_TAIL attributes. + * Following attributes are provided for drivers that generate full Beacon + * and Probe Response frames internally: %NL80211_ATTR_SSID, + * %NL80211_ATTR_HIDDEN_SSID. * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface, * parameters are like for %NL80211_CMD_SET_BEACON. * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it @@ -1019,6 +1022,10 @@ enum nl80211_commands { * being a list of supported rates as defined by IEEE 802.11 7.3.2.2 but * without the length restriction (at most %NL80211_MAX_SUPP_RATES). * + * @NL80211_ATTR_HIDDEN_SSID: indicates whether SSID is to be hidden from Beacon + * and Probe Response (when response to wildcard Probe Request); see + * &enum nl80211_hidden_ssid, represented as a u32 + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1224,6 +1231,8 @@ enum nl80211_attrs { NL80211_ATTR_SCAN_SUPP_RATES, + NL80211_ATTR_HIDDEN_SSID, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -2430,4 +2439,19 @@ enum nl80211_rekey_data { MAX_NL80211_REKEY_DATA = NUM_NL80211_REKEY_DATA - 1 }; +/** + * enum nl80211_hidden_ssid - values for %NL80211_ATTR_HIDDEN_SSID + * @NL80211_HIDDEN_SSID_NOT_IN_USE: do not hide SSID (i.e., broadcast it in + * Beacon frames) + * @NL80211_HIDDEN_SSID_ZERO_LEN: hide SSID by using zero-length SSID element + * in Beacon frames + * @NL80211_HIDDEN_SSID_ZERO_CONTENTS: hide SSID by using correct length of SSID + * element in Beacon frames but zero out each byte in the SSID + */ +enum nl80211_hidden_ssid { + NL80211_HIDDEN_SSID_NOT_IN_USE, + NL80211_HIDDEN_SSID_ZERO_LEN, + NL80211_HIDDEN_SSID_ZERO_CONTENTS +}; + #endif /* __LINUX_NL80211_H */ -- cgit v1.2.2 From 5fb628e9105eef6796789b1ae93289e1566ccdf0 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Wed, 10 Aug 2011 23:54:35 +0300 Subject: nl80211/cfg80211: Add crypto settings into NEW_BEACON This removes need from drivers to parse the beacon tail/head data to figure out what crypto settings are to be used in AP mode in case the Beacon and Probe Response frames are fully constructed in the driver/firmware. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 227ee9a0ff1a..580fcdceed2c 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -163,7 +163,10 @@ * %NL80211_ATTR_BEACON_HEAD and %NL80211_ATTR_BEACON_TAIL attributes. * Following attributes are provided for drivers that generate full Beacon * and Probe Response frames internally: %NL80211_ATTR_SSID, - * %NL80211_ATTR_HIDDEN_SSID. + * %NL80211_ATTR_HIDDEN_SSID, %NL80211_ATTR_CIPHERS_PAIRWISE, + * %NL80211_ATTR_CIPHER_GROUP, %NL80211_ATTR_WPA_VERSIONS, + * %NL80211_ATTR_AKM_SUITES, %NL80211_ATTR_PRIVACY, + * %NL80211_ATTR_AUTH_TYPE. * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface, * parameters are like for %NL80211_CMD_SET_BEACON. * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it @@ -845,18 +848,20 @@ enum nl80211_commands { * @NL80211_ATTR_STATUS_CODE: StatusCode for the %NL80211_CMD_CONNECT * event (u16) * @NL80211_ATTR_PRIVACY: Flag attribute, used with connect(), indicating - * that protected APs should be used. + * that protected APs should be used. This is also used with NEW_BEACON to + * indicate that the BSS is to use protection. * - * @NL80211_ATTR_CIPHERS_PAIRWISE: Used with CONNECT and ASSOCIATE to - * indicate which unicast key ciphers will be used with the connection + * @NL80211_ATTR_CIPHERS_PAIRWISE: Used with CONNECT, ASSOCIATE, and NEW_BEACON + * to indicate which unicast key ciphers will be used with the connection * (an array of u32). - * @NL80211_ATTR_CIPHER_GROUP: Used with CONNECT and ASSOCIATE to indicate - * which group key cipher will be used with the connection (a u32). - * @NL80211_ATTR_WPA_VERSIONS: Used with CONNECT and ASSOCIATE to indicate - * which WPA version(s) the AP we want to associate with is using + * @NL80211_ATTR_CIPHER_GROUP: Used with CONNECT, ASSOCIATE, and NEW_BEACON to + * indicate which group key cipher will be used with the connection (a + * u32). + * @NL80211_ATTR_WPA_VERSIONS: Used with CONNECT, ASSOCIATE, and NEW_BEACON to + * indicate which WPA version(s) the AP we want to associate with is using * (a u32 with flags from &enum nl80211_wpa_versions). - * @NL80211_ATTR_AKM_SUITES: Used with CONNECT and ASSOCIATE to indicate - * which key management algorithm(s) to use (an array of u32). + * @NL80211_ATTR_AKM_SUITES: Used with CONNECT, ASSOCIATE, and NEW_BEACON to + * indicate which key management algorithm(s) to use (an array of u32). * * @NL80211_ATTR_REQ_IE: (Re)association request information elements as * sent out by the card, for ROAM and successful CONNECT events. -- cgit v1.2.2 From 9946ecfb510462e59afddb2a992da804d58b6bcd Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Wed, 10 Aug 2011 23:55:56 +0300 Subject: nl80211/cfg80211: Add extra IE configuration to AP mode setup The NL80211_CMD_NEW_BEACON command is, in practice, requesting AP mode operations to be started. Add new attributes to provide extra IEs (e.g., WPS IE, P2P IE) for drivers that build Beacon, Probe Response, and (Re)Association Response frames internally (likely in firmware). Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 580fcdceed2c..89dec16b4697 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -166,7 +166,8 @@ * %NL80211_ATTR_HIDDEN_SSID, %NL80211_ATTR_CIPHERS_PAIRWISE, * %NL80211_ATTR_CIPHER_GROUP, %NL80211_ATTR_WPA_VERSIONS, * %NL80211_ATTR_AKM_SUITES, %NL80211_ATTR_PRIVACY, - * %NL80211_ATTR_AUTH_TYPE. + * %NL80211_ATTR_AUTH_TYPE, %NL80211_ATTR_IE, %NL80211_ATTR_IE_PROBE_RESP, + * %NL80211_ATTR_IE_ASSOC_RESP. * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface, * parameters are like for %NL80211_CMD_SET_BEACON. * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it @@ -1031,6 +1032,16 @@ enum nl80211_commands { * and Probe Response (when response to wildcard Probe Request); see * &enum nl80211_hidden_ssid, represented as a u32 * + * @NL80211_ATTR_IE_PROBE_RESP: Information element(s) for Probe Response frame. + * This is used with %NL80211_CMD_NEW_BEACON and %NL80211_CMD_SET_BEACON to + * provide extra IEs (e.g., WPS/P2P IE) into Probe Response frames when the + * driver (or firmware) replies to Probe Request frames. + * @NL80211_ATTR_IE_ASSOC_RESP: Information element(s) for (Re)Association + * Response frames. This is used with %NL80211_CMD_NEW_BEACON and + * %NL80211_CMD_SET_BEACON to provide extra IEs (e.g., WPS/P2P IE) into + * (Re)Association Response frames when the driver (or firmware) replies to + * (Re)Association Request frames. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1238,6 +1249,9 @@ enum nl80211_attrs { NL80211_ATTR_HIDDEN_SSID, + NL80211_ATTR_IE_PROBE_RESP, + NL80211_ATTR_IE_ASSOC_RESP, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.2 From 4dc83dfd3efa015628ebaa7245d342c8d5ca0298 Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Mon, 8 Aug 2011 01:33:53 +0000 Subject: if_ether: add new Ethernet Protocol ID for af_iucv Add a new ethertype for af_iucv over s/390 HiperSockets transport. Since HiperSockets is not a real ethernet hw this is not an officially registered ID. Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- include/linux/if_ether.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h index a3d99ff6e3b5..c63bbd754a84 100644 --- a/include/linux/if_ether.h +++ b/include/linux/if_ether.h @@ -88,6 +88,7 @@ #define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ #define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ #define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */ /* * Non DIX types. Won't clash for 1500 types. -- cgit v1.2.2 From ec12cb7f31e28854efae7dd6f9544e0a66379040 Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 21 Jul 2011 09:43:30 -0700 Subject: sched: Accumulate per-cfs_rq cpu usage and charge against bandwidth Account bandwidth usage on the cfs_rq level versus the task_groups to which they belong. Whether we are tracking bandwidth on a given cfs_rq is maintained under cfs_rq->runtime_enabled. cfs_rq's which belong to a bandwidth constrained task_group have their runtime accounted via the update_curr() path, which withdraws bandwidth from the global pool as desired. Updates involving the global pool are currently protected under cfs_bandwidth->lock, local runtime is protected by rq->lock. This patch only assigns and tracks quota, no action is taken in the case that cfs_rq->runtime_used exceeds cfs_rq->runtime_assigned. Signed-off-by: Paul Turner Signed-off-by: Nikhil Rao Signed-off-by: Bharata B Rao Reviewed-by: Hidetoshi Seto Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20110721184757.179386821@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ac2c0578e0f..bc6f5f2e24fa 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2040,6 +2040,10 @@ static inline void sched_autogroup_fork(struct signal_struct *sig) { } static inline void sched_autogroup_exit(struct signal_struct *sig) { } #endif +#ifdef CONFIG_CFS_BANDWIDTH +extern unsigned int sysctl_sched_cfs_bandwidth_slice; +#endif + #ifdef CONFIG_RT_MUTEXES extern int rt_mutex_getprio(struct task_struct *p); extern void rt_mutex_setprio(struct task_struct *p, int prio); -- cgit v1.2.2 From 2bb698412d8aab0bfc3f269f5ebe8eb67d7cc8f4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 14 Aug 2011 22:52:04 -0700 Subject: net: Move sungem_phy.h under include/linux Fixes build failures of the spider_net driver because it tries to use a convoluted path to include this header. Reported-by: Stephen Rothwell Signed-off-by: David S. Miller --- include/linux/sungem_phy.h | 132 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 include/linux/sungem_phy.h (limited to 'include/linux') diff --git a/include/linux/sungem_phy.h b/include/linux/sungem_phy.h new file mode 100644 index 000000000000..af02f9479cbb --- /dev/null +++ b/include/linux/sungem_phy.h @@ -0,0 +1,132 @@ +#ifndef __SUNGEM_PHY_H__ +#define __SUNGEM_PHY_H__ + +struct mii_phy; + +/* Operations supported by any kind of PHY */ +struct mii_phy_ops +{ + int (*init)(struct mii_phy *phy); + int (*suspend)(struct mii_phy *phy); + int (*setup_aneg)(struct mii_phy *phy, u32 advertise); + int (*setup_forced)(struct mii_phy *phy, int speed, int fd); + int (*poll_link)(struct mii_phy *phy); + int (*read_link)(struct mii_phy *phy); + int (*enable_fiber)(struct mii_phy *phy, int autoneg); +}; + +/* Structure used to statically define an mii/gii based PHY */ +struct mii_phy_def +{ + u32 phy_id; /* Concatenated ID1 << 16 | ID2 */ + u32 phy_id_mask; /* Significant bits */ + u32 features; /* Ethtool SUPPORTED_* defines */ + int magic_aneg; /* Autoneg does all speed test for us */ + const char* name; + const struct mii_phy_ops* ops; +}; + +enum { + BCM54XX_COPPER, + BCM54XX_FIBER, + BCM54XX_GBIC, + BCM54XX_SGMII, + BCM54XX_UNKNOWN, +}; + +/* An instance of a PHY, partially borrowed from mii_if_info */ +struct mii_phy +{ + struct mii_phy_def* def; + u32 advertising; + int mii_id; + + /* 1: autoneg enabled, 0: disabled */ + int autoneg; + + /* forced speed & duplex (no autoneg) + * partner speed & duplex & pause (autoneg) + */ + int speed; + int duplex; + int pause; + + /* Provided by host chip */ + struct net_device *dev; + int (*mdio_read) (struct net_device *dev, int mii_id, int reg); + void (*mdio_write) (struct net_device *dev, int mii_id, int reg, int val); + void *platform_data; +}; + +/* Pass in a struct mii_phy with dev, mdio_read and mdio_write + * filled, the remaining fields will be filled on return + */ +extern int mii_phy_probe(struct mii_phy *phy, int mii_id); + + +/* MII definitions missing from mii.h */ + +#define BMCR_SPD2 0x0040 /* Gigabit enable (bcm54xx) */ +#define LPA_PAUSE 0x0400 + +/* More PHY registers (model specific) */ + +/* MII BCM5201 MULTIPHY interrupt register */ +#define MII_BCM5201_INTERRUPT 0x1A +#define MII_BCM5201_INTERRUPT_INTENABLE 0x4000 + +#define MII_BCM5201_AUXMODE2 0x1B +#define MII_BCM5201_AUXMODE2_LOWPOWER 0x0008 + +#define MII_BCM5201_MULTIPHY 0x1E + +/* MII BCM5201 MULTIPHY register bits */ +#define MII_BCM5201_MULTIPHY_SERIALMODE 0x0002 +#define MII_BCM5201_MULTIPHY_SUPERISOLATE 0x0008 + +/* MII BCM5221 Additional registers */ +#define MII_BCM5221_TEST 0x1f +#define MII_BCM5221_TEST_ENABLE_SHADOWS 0x0080 +#define MII_BCM5221_SHDOW_AUX_STAT2 0x1b +#define MII_BCM5221_SHDOW_AUX_STAT2_APD 0x0020 +#define MII_BCM5221_SHDOW_AUX_MODE4 0x1a +#define MII_BCM5221_SHDOW_AUX_MODE4_IDDQMODE 0x0001 +#define MII_BCM5221_SHDOW_AUX_MODE4_CLKLOPWR 0x0004 + +/* MII BCM5241 Additional registers */ +#define MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR 0x0008 + +/* MII BCM5400 1000-BASET Control register */ +#define MII_BCM5400_GB_CONTROL 0x09 +#define MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP 0x0200 + +/* MII BCM5400 AUXCONTROL register */ +#define MII_BCM5400_AUXCONTROL 0x18 +#define MII_BCM5400_AUXCONTROL_PWR10BASET 0x0004 + +/* MII BCM5400 AUXSTATUS register */ +#define MII_BCM5400_AUXSTATUS 0x19 +#define MII_BCM5400_AUXSTATUS_LINKMODE_MASK 0x0700 +#define MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT 8 + +/* 1000BT control (Marvell & BCM54xx at least) */ +#define MII_1000BASETCONTROL 0x09 +#define MII_1000BASETCONTROL_FULLDUPLEXCAP 0x0200 +#define MII_1000BASETCONTROL_HALFDUPLEXCAP 0x0100 + +/* Marvell 88E1011 PHY control */ +#define MII_M1011_PHY_SPEC_CONTROL 0x10 +#define MII_M1011_PHY_SPEC_CONTROL_MANUAL_MDIX 0x20 +#define MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX 0x40 + +/* Marvell 88E1011 PHY status */ +#define MII_M1011_PHY_SPEC_STATUS 0x11 +#define MII_M1011_PHY_SPEC_STATUS_1000 0x8000 +#define MII_M1011_PHY_SPEC_STATUS_100 0x4000 +#define MII_M1011_PHY_SPEC_STATUS_SPD_MASK 0xc000 +#define MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX 0x2000 +#define MII_M1011_PHY_SPEC_STATUS_RESOLVED 0x0800 +#define MII_M1011_PHY_SPEC_STATUS_TX_PAUSE 0x0008 +#define MII_M1011_PHY_SPEC_STATUS_RX_PAUSE 0x0004 + +#endif /* __SUNGEM_PHY_H__ */ -- cgit v1.2.2 From 1e39f384bb01b0395b69cb70c2cacae65012f203 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Mon, 15 Aug 2011 09:09:16 -0400 Subject: evm: fix build problems - Make the previously missing security_old_inode_init_security() stub function definition static inline. - The stub security_inode_init_security() function previously returned -EOPNOTSUPP and relied on the callers to change it to 0. The stub security/security_old_inode_init_security() functions now return 0. Reported-by: Stephen Rothwell Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/security.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index f399cf10e2a8..d9f7ec41ba51 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -2045,14 +2045,16 @@ static inline int security_inode_init_security(struct inode *inode, initxattrs initxattrs, void *fs_data) { - return -EOPNOTSUPP; + return 0; } -int security_old_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, - void **value, size_t *len) +static inline int security_old_inode_init_security(struct inode *inode, + struct inode *dir, + const struct qstr *qstr, + char **name, void **value, + size_t *len) { - return -EOPNOTSUPP; + return 0; } static inline int security_inode_create(struct inode *dir, -- cgit v1.2.2 From 19e2f6fe9601ca5c846b7163e6d6d00f87b34760 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 15 Aug 2011 23:10:39 -0700 Subject: net: Fix sungem_phy sharing. Since sungem_phy is used by multiple, unrelated, drivers make it build as a real module under drivers/net. depmod will pick up the symbol dependency and make sure sungem_phy.ko gets loaded any time sungem.ko or spider_net.ko is loaded. Tested-by: Stephen Rothwell Signed-off-by: David S. Miller --- include/linux/sungem_phy.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sungem_phy.h b/include/linux/sungem_phy.h index af02f9479cbb..bd9be9f59d3a 100644 --- a/include/linux/sungem_phy.h +++ b/include/linux/sungem_phy.h @@ -61,7 +61,7 @@ struct mii_phy /* Pass in a struct mii_phy with dev, mdio_read and mdio_write * filled, the remaining fields will be filled on return */ -extern int mii_phy_probe(struct mii_phy *phy, int mii_id); +extern int sungem_phy_probe(struct mii_phy *phy, int mii_id); /* MII definitions missing from mii.h */ -- cgit v1.2.2 From a16e470caa173d323ef68dcac98c899b95fa4f84 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 9 Aug 2011 10:08:10 +0530 Subject: dmaengine: remove struct scatterlist for header Commit 90b44f8 introduces dmaengine_prep_slave_single API which adds scatterlist.h in dmaengine.h, so defining struct scatterlist is not required Signed-off-by: Vinod Koul Acked-by: Dan Williams --- include/linux/dmaengine.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 0d738c95fe4e..ace51af4369f 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -26,8 +26,6 @@ #include #include -struct scatterlist; - /** * typedef dma_cookie_t - an opaque DMA cookie * -- cgit v1.2.2 From 1ddc07d0f13a753f8e345e0538562e1899d2bc26 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 16 Aug 2011 10:08:48 +0900 Subject: ASoC: Add WM8958 noise gate support Signed-off-by: Mark Brown --- include/linux/mfd/wm8994/registers.h | 45 ++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 64bf91e4dfa9..83ecdcd8aaf9 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -134,6 +134,8 @@ #define WM8994_AIF1_DAC1_FILTERS_2 0x421 #define WM8994_AIF1_DAC2_FILTERS_1 0x422 #define WM8994_AIF1_DAC2_FILTERS_2 0x423 +#define WM8958_AIF1_DAC1_NOISE_GATE 0x430 +#define WM8958_AIF1_DAC2_NOISE_GATE 0x431 #define WM8994_AIF1_DRC1_1 0x440 #define WM8994_AIF1_DRC1_2 0x441 #define WM8994_AIF1_DRC1_3 0x442 @@ -191,6 +193,7 @@ #define WM8994_AIF2_ADC_FILTERS 0x510 #define WM8994_AIF2_DAC_FILTERS_1 0x520 #define WM8994_AIF2_DAC_FILTERS_2 0x521 +#define WM8958_AIF2_DAC_NOISE_GATE 0x530 #define WM8994_AIF2_DRC_1 0x540 #define WM8994_AIF2_DRC_2 0x541 #define WM8994_AIF2_DRC_3 0x542 @@ -2987,6 +2990,34 @@ #define WM8994_AIF1DAC2_3D_ENA_SHIFT 8 /* AIF1DAC2_3D_ENA */ #define WM8994_AIF1DAC2_3D_ENA_WIDTH 1 /* AIF1DAC2_3D_ENA */ +/* + * R1072 (0x430) - AIF1 DAC1 Noise Gate + */ +#define WM8958_AIF1DAC1_NG_HLD_MASK 0x0060 /* AIF1DAC1_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC1_NG_HLD_SHIFT 5 /* AIF1DAC1_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC1_NG_HLD_WIDTH 2 /* AIF1DAC1_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC1_NG_THR_MASK 0x000E /* AIF1DAC1_NG_THR - [3:1] */ +#define WM8958_AIF1DAC1_NG_THR_SHIFT 1 /* AIF1DAC1_NG_THR - [3:1] */ +#define WM8958_AIF1DAC1_NG_THR_WIDTH 3 /* AIF1DAC1_NG_THR - [3:1] */ +#define WM8958_AIF1DAC1_NG_ENA 0x0001 /* AIF1DAC1_NG_ENA */ +#define WM8958_AIF1DAC1_NG_ENA_MASK 0x0001 /* AIF1DAC1_NG_ENA */ +#define WM8958_AIF1DAC1_NG_ENA_SHIFT 0 /* AIF1DAC1_NG_ENA */ +#define WM8958_AIF1DAC1_NG_ENA_WIDTH 1 /* AIF1DAC1_NG_ENA */ + +/* + * R1073 (0x431) - AIF1 DAC2 Noise Gate + */ +#define WM8958_AIF1DAC2_NG_HLD_MASK 0x0060 /* AIF1DAC2_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC2_NG_HLD_SHIFT 5 /* AIF1DAC2_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC2_NG_HLD_WIDTH 2 /* AIF1DAC2_NG_HLD - [6:5] */ +#define WM8958_AIF1DAC2_NG_THR_MASK 0x000E /* AIF1DAC2_NG_THR - [3:1] */ +#define WM8958_AIF1DAC2_NG_THR_SHIFT 1 /* AIF1DAC2_NG_THR - [3:1] */ +#define WM8958_AIF1DAC2_NG_THR_WIDTH 3 /* AIF1DAC2_NG_THR - [3:1] */ +#define WM8958_AIF1DAC2_NG_ENA 0x0001 /* AIF1DAC2_NG_ENA */ +#define WM8958_AIF1DAC2_NG_ENA_MASK 0x0001 /* AIF1DAC2_NG_ENA */ +#define WM8958_AIF1DAC2_NG_ENA_SHIFT 0 /* AIF1DAC2_NG_ENA */ +#define WM8958_AIF1DAC2_NG_ENA_WIDTH 1 /* AIF1DAC2_NG_ENA */ + /* * R1088 (0x440) - AIF1 DRC1 (1) */ @@ -3598,6 +3629,20 @@ #define WM8994_AIF2DAC_3D_ENA_SHIFT 8 /* AIF2DAC_3D_ENA */ #define WM8994_AIF2DAC_3D_ENA_WIDTH 1 /* AIF2DAC_3D_ENA */ +/* + * R1328 (0x530) - AIF2 DAC Noise Gate + */ +#define WM8958_AIF2DAC_NG_HLD_MASK 0x0060 /* AIF2DAC_NG_HLD - [6:5] */ +#define WM8958_AIF2DAC_NG_HLD_SHIFT 5 /* AIF2DAC_NG_HLD - [6:5] */ +#define WM8958_AIF2DAC_NG_HLD_WIDTH 2 /* AIF2DAC_NG_HLD - [6:5] */ +#define WM8958_AIF2DAC_NG_THR_MASK 0x000E /* AIF2DAC_NG_THR - [3:1] */ +#define WM8958_AIF2DAC_NG_THR_SHIFT 1 /* AIF2DAC_NG_THR - [3:1] */ +#define WM8958_AIF2DAC_NG_THR_WIDTH 3 /* AIF2DAC_NG_THR - [3:1] */ +#define WM8958_AIF2DAC_NG_ENA 0x0001 /* AIF2DAC_NG_ENA */ +#define WM8958_AIF2DAC_NG_ENA_MASK 0x0001 /* AIF2DAC_NG_ENA */ +#define WM8958_AIF2DAC_NG_ENA_SHIFT 0 /* AIF2DAC_NG_ENA */ +#define WM8958_AIF2DAC_NG_ENA_WIDTH 1 /* AIF2DAC_NG_ENA */ + /* * R1344 (0x540) - AIF2 DRC (1) */ -- cgit v1.2.2 From abd4d5587be911f63592537284dad78766d97d62 Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Fri, 12 Aug 2011 10:54:51 -0700 Subject: pstore: change mutex locking to spin_locks pstore was using mutex locking to protect read/write access to the backend plug-ins. This causes problems when pstore is executed in an NMI context through panic() -> kmsg_dump(). This patch changes the mutex to a spin_lock_irqsave then also checks to see if we are in an NMI context. If we are in an NMI and can't get the lock, just print a message stating that and blow by the locking. All this is probably a hack around the bigger locking problem but it solves my current situation of trying to sleep in an NMI context. Tested by loading the lkdtm module and executing a HARDLOCKUP which will cause the machine to panic inside the nmi handler. Signed-off-by: Don Zickus Acked-by: Matthew Garrett Signed-off-by: Tony Luck --- include/linux/pstore.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index cc03bbf5c4b8..b91440e64d6e 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -32,7 +32,7 @@ enum pstore_type_id { struct pstore_info { struct module *owner; char *name; - struct mutex buf_mutex; /* serialize access to 'buf' */ + spinlock_t buf_lock; /* serialize access to 'buf' */ char *buf; size_t bufsize; int (*open)(struct pstore_info *psi); -- cgit v1.2.2 From 5f308d195ed2ae227bea569c7c8a4563e04e0110 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 15 Aug 2011 14:06:20 +0000 Subject: ethtool: Reformat struct ethtool_coalesce comments into kernel-doc format This reorders and duplicates some wording, but should make no substantive changes. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 135 +++++++++++++++++++++++------------------------- 1 file changed, 64 insertions(+), 71 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index c6e427ab65fe..be32dd03e10c 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -117,99 +117,92 @@ struct ethtool_eeprom { __u8 data[0]; }; -/* for configuring coalescing parameters of chip */ +/** + * struct ethtool_coalesce - coalescing parameters of chip + * @cmd: ETHTOOL_{G,S}COALESCE + * @rx_coalesce_usecs: How many usecs to delay an RX interrupt after + * a packet arrives. If 0, only @rx_max_coalesced_frames is used. + * @rx_max_coalesced_frames: How many packets to delay an RX interrupt + * after a packet arrives. If 0, only @rx_coalesce_usecs is used. + * @rx_coalesce_usecs_irq: Same as @rx_coalesce_usecs, except that + * this value applies while an IRQ is being serviced by the host. + * @rx_max_coalesced_frames_irq: Same as @rx_max_coalesced_frames, + * except that this value applies while an IRQ is being serviced + * by the host. + * @tx_coalesce_usecs: How many usecs to delay a TX interrupt after + * a packet is sent. If 0, only @tx_max_coalesced_frames + * is used. + * @tx_max_coalesced_frames: How many packets to delay a TX interrupt + * after a packet is sent. If 0, only @tx_coalesce_usecs is + * used. + * @tx_coalesce_usecs_irq: Same as @tx_coalesce_usecs, except that + * this value applies while an IRQ is being serviced by the host. + * @tx_max_coalesced_frames_irq: Same as @tx_max_coalesced_frames, + * except that this value applies while an IRQ is being serviced + * by the host. + * @stats_block_coalesce_usecs: How many usecs to delay in-memory + * statistics block updates. Some drivers do not have an + * in-memory statistic block, and in such cases this value is + * ignored. This value must not be zero. + * @use_adaptive_rx_coalesce: Enable adaptive RX coalescing. + * @use_adaptive_tx_coalesce: Enable adaptive TX coalescing. + * @pkt_rate_low: Threshold for low packet rate (packets per second). + * @rx_coalesce_usecs_low: How many usecs to delay an RX interrupt after + * a packet arrives, when the packet rate is below @pkt_rate_low. + * @rx_max_coalesced_frames_low: How many packets to delay an RX interrupt + * after a packet arrives, when the packet rate is below @pkt_rate_low. + * @tx_coalesce_usecs_low: How many usecs to delay a TX interrupt after + * a packet is sent, when the packet rate is below @pkt_rate_low. + * @tx_max_coalesced_frames_low: How many packets to delay a TX interrupt + * after a packet is sent, when the packet rate is below @pkt_rate_low. + * @pkt_rate_high: Threshold for high packet rate (packets per second). + * @rx_coalesce_usecs_high: How many usecs to delay an RX interrupt after + * a packet arrives, when the packet rate is above @pkt_rate_high. + * @rx_max_coalesced_frames_high: How many packets to delay an RX interrupt + * after a packet arrives, when the packet rate is above @pkt_rate_high. + * @tx_coalesce_usecs_high: How many usecs to delay a TX interrupt after + * a packet is sent, when the packet rate is above @pkt_rate_high. + * @tx_max_coalesced_frames_high: How many packets to delay a TX interrupt + * after a packet is sent, when the packet rate is above @pkt_rate_high. + * @rate_sample_interval: How often to do adaptive coalescing packet rate + * sampling, measured in seconds. Must not be zero. + * + * It is illegal to set both usecs and max frames to zero as this + * would cause interrupts to never be generated. + * + * Adaptive RX/TX coalescing is an algorithm implemented by some + * drivers to improve latency under low packet rates and improve + * throughput under high packet rates. Some drivers only implement + * one of RX or TX adaptive coalescing. Anything not implemented by + * the driver causes these values to be silently ignored. + * + * When the packet rate is below @pkt_rate_high but above + * @pkt_rate_low (both measured in packets per second) the + * normal {rx,tx}_* coalescing parameters are used. + */ struct ethtool_coalesce { - __u32 cmd; /* ETHTOOL_{G,S}COALESCE */ - - /* How many usecs to delay an RX interrupt after - * a packet arrives. If 0, only rx_max_coalesced_frames - * is used. - */ + __u32 cmd; __u32 rx_coalesce_usecs; - - /* How many packets to delay an RX interrupt after - * a packet arrives. If 0, only rx_coalesce_usecs is - * used. It is illegal to set both usecs and max frames - * to zero as this would cause RX interrupts to never be - * generated. - */ __u32 rx_max_coalesced_frames; - - /* Same as above two parameters, except that these values - * apply while an IRQ is being serviced by the host. Not - * all cards support this feature and the values are ignored - * in that case. - */ __u32 rx_coalesce_usecs_irq; __u32 rx_max_coalesced_frames_irq; - - /* How many usecs to delay a TX interrupt after - * a packet is sent. If 0, only tx_max_coalesced_frames - * is used. - */ __u32 tx_coalesce_usecs; - - /* How many packets to delay a TX interrupt after - * a packet is sent. If 0, only tx_coalesce_usecs is - * used. It is illegal to set both usecs and max frames - * to zero as this would cause TX interrupts to never be - * generated. - */ __u32 tx_max_coalesced_frames; - - /* Same as above two parameters, except that these values - * apply while an IRQ is being serviced by the host. Not - * all cards support this feature and the values are ignored - * in that case. - */ __u32 tx_coalesce_usecs_irq; __u32 tx_max_coalesced_frames_irq; - - /* How many usecs to delay in-memory statistics - * block updates. Some drivers do not have an in-memory - * statistic block, and in such cases this value is ignored. - * This value must not be zero. - */ __u32 stats_block_coalesce_usecs; - - /* Adaptive RX/TX coalescing is an algorithm implemented by - * some drivers to improve latency under low packet rates and - * improve throughput under high packet rates. Some drivers - * only implement one of RX or TX adaptive coalescing. Anything - * not implemented by the driver causes these values to be - * silently ignored. - */ __u32 use_adaptive_rx_coalesce; __u32 use_adaptive_tx_coalesce; - - /* When the packet rate (measured in packets per second) - * is below pkt_rate_low, the {rx,tx}_*_low parameters are - * used. - */ __u32 pkt_rate_low; __u32 rx_coalesce_usecs_low; __u32 rx_max_coalesced_frames_low; __u32 tx_coalesce_usecs_low; __u32 tx_max_coalesced_frames_low; - - /* When the packet rate is below pkt_rate_high but above - * pkt_rate_low (both measured in packets per second) the - * normal {rx,tx}_* coalescing parameters are used. - */ - - /* When the packet rate is (measured in packets per second) - * is above pkt_rate_high, the {rx,tx}_*_high parameters are - * used. - */ __u32 pkt_rate_high; __u32 rx_coalesce_usecs_high; __u32 rx_max_coalesced_frames_high; __u32 tx_coalesce_usecs_high; __u32 tx_max_coalesced_frames_high; - - /* How often to do adaptive coalescing packet rate sampling, - * measured in seconds. Must not be zero. - */ __u32 rate_sample_interval; }; -- cgit v1.2.2 From 725b361b29ba9fb72705a30743d288ee66055209 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 15 Aug 2011 14:07:15 +0000 Subject: ethtool: Specify what kind of coalescing struct ethtool_coalesce covers Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index be32dd03e10c..71d45a199f96 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -118,7 +118,7 @@ struct ethtool_eeprom { }; /** - * struct ethtool_coalesce - coalescing parameters of chip + * struct ethtool_coalesce - coalescing parameters for IRQs and stats updates * @cmd: ETHTOOL_{G,S}COALESCE * @rx_coalesce_usecs: How many usecs to delay an RX interrupt after * a packet arrives. If 0, only @rx_max_coalesced_frames is used. -- cgit v1.2.2 From 2d7c79390eccd743a643db3fa577f4837e7f2b85 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 15 Aug 2011 14:07:47 +0000 Subject: ethtool: Correct description of 'max_coalesced_frames' fields The current descriptions state that these fields specify 'How many packets to delay ... after a packet ...' which implies that the hardware should wait for (max_coalesced_frames + 1) completions before generating an interrupt. It is also stated that setting both this field and the corresponding 'coalesce_usecs' field to 0 is invalid. Together, this implies that the hardware must always be configured to delay a completion IRQ for at least 1 usec or 1 more completion. I believe that the addition of 1 is not intended, and David Miller confirms that the original implementation (in tg3) does not do this. Clarify the descriptions of these fields to avoid this interpretation. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 71d45a199f96..18059ca41f09 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -122,8 +122,8 @@ struct ethtool_eeprom { * @cmd: ETHTOOL_{G,S}COALESCE * @rx_coalesce_usecs: How many usecs to delay an RX interrupt after * a packet arrives. If 0, only @rx_max_coalesced_frames is used. - * @rx_max_coalesced_frames: How many packets to delay an RX interrupt - * after a packet arrives. If 0, only @rx_coalesce_usecs is used. + * @rx_max_coalesced_frames: Maximum number of packets to receive + * before an RX interrupt. If 0, only @rx_coalesce_usecs is used. * @rx_coalesce_usecs_irq: Same as @rx_coalesce_usecs, except that * this value applies while an IRQ is being serviced by the host. * @rx_max_coalesced_frames_irq: Same as @rx_max_coalesced_frames, @@ -132,9 +132,9 @@ struct ethtool_eeprom { * @tx_coalesce_usecs: How many usecs to delay a TX interrupt after * a packet is sent. If 0, only @tx_max_coalesced_frames * is used. - * @tx_max_coalesced_frames: How many packets to delay a TX interrupt - * after a packet is sent. If 0, only @tx_coalesce_usecs is - * used. + * @tx_max_coalesced_frames: Maximum number of packets to be sent + * before a TX interrupt. If 0, only @tx_coalesce_usecs is + * used. * @tx_coalesce_usecs_irq: Same as @tx_coalesce_usecs, except that * this value applies while an IRQ is being serviced by the host. * @tx_max_coalesced_frames_irq: Same as @tx_max_coalesced_frames, @@ -149,21 +149,21 @@ struct ethtool_eeprom { * @pkt_rate_low: Threshold for low packet rate (packets per second). * @rx_coalesce_usecs_low: How many usecs to delay an RX interrupt after * a packet arrives, when the packet rate is below @pkt_rate_low. - * @rx_max_coalesced_frames_low: How many packets to delay an RX interrupt - * after a packet arrives, when the packet rate is below @pkt_rate_low. + * @rx_max_coalesced_frames_low: Maximum number of packets to be received + * before an RX interrupt, when the packet rate is below @pkt_rate_low. * @tx_coalesce_usecs_low: How many usecs to delay a TX interrupt after * a packet is sent, when the packet rate is below @pkt_rate_low. - * @tx_max_coalesced_frames_low: How many packets to delay a TX interrupt - * after a packet is sent, when the packet rate is below @pkt_rate_low. + * @tx_max_coalesced_frames_low: Maximum nuumber of packets to be sent before + * a TX interrupt, when the packet rate is below @pkt_rate_low. * @pkt_rate_high: Threshold for high packet rate (packets per second). * @rx_coalesce_usecs_high: How many usecs to delay an RX interrupt after * a packet arrives, when the packet rate is above @pkt_rate_high. - * @rx_max_coalesced_frames_high: How many packets to delay an RX interrupt - * after a packet arrives, when the packet rate is above @pkt_rate_high. + * @rx_max_coalesced_frames_high: Maximum number of packets to be received + * before an RX interrupt, when the packet rate is above @pkt_rate_high. * @tx_coalesce_usecs_high: How many usecs to delay a TX interrupt after * a packet is sent, when the packet rate is above @pkt_rate_high. - * @tx_max_coalesced_frames_high: How many packets to delay a TX interrupt - * after a packet is sent, when the packet rate is above @pkt_rate_high. + * @tx_max_coalesced_frames_high: Maximum number of packets to be sent before + * a TX interrupt, when the packet rate is above @pkt_rate_high. * @rate_sample_interval: How often to do adaptive coalescing packet rate * sampling, measured in seconds. Must not be zero. * -- cgit v1.2.2 From acf42a2a575777681fee45ed59d7140be38e9142 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 15 Aug 2011 14:08:37 +0000 Subject: ethtool: Explicitly state the exit condition for interrupt coalescing Also explicitly state how to disable interrupt coalescing. Remove the now-redundant text from field descriptions. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 18059ca41f09..42378b34ae8f 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -121,20 +121,18 @@ struct ethtool_eeprom { * struct ethtool_coalesce - coalescing parameters for IRQs and stats updates * @cmd: ETHTOOL_{G,S}COALESCE * @rx_coalesce_usecs: How many usecs to delay an RX interrupt after - * a packet arrives. If 0, only @rx_max_coalesced_frames is used. + * a packet arrives. * @rx_max_coalesced_frames: Maximum number of packets to receive - * before an RX interrupt. If 0, only @rx_coalesce_usecs is used. + * before an RX interrupt. * @rx_coalesce_usecs_irq: Same as @rx_coalesce_usecs, except that * this value applies while an IRQ is being serviced by the host. * @rx_max_coalesced_frames_irq: Same as @rx_max_coalesced_frames, * except that this value applies while an IRQ is being serviced * by the host. * @tx_coalesce_usecs: How many usecs to delay a TX interrupt after - * a packet is sent. If 0, only @tx_max_coalesced_frames - * is used. + * a packet is sent. * @tx_max_coalesced_frames: Maximum number of packets to be sent - * before a TX interrupt. If 0, only @tx_coalesce_usecs is - * used. + * before a TX interrupt. * @tx_coalesce_usecs_irq: Same as @tx_coalesce_usecs, except that * this value applies while an IRQ is being serviced by the host. * @tx_max_coalesced_frames_irq: Same as @tx_max_coalesced_frames, @@ -167,8 +165,13 @@ struct ethtool_eeprom { * @rate_sample_interval: How often to do adaptive coalescing packet rate * sampling, measured in seconds. Must not be zero. * - * It is illegal to set both usecs and max frames to zero as this - * would cause interrupts to never be generated. + * Each pair of (usecs, max_frames) fields specifies this exit + * condition for interrupt coalescing: + * (usecs > 0 && time_since_first_completion >= usecs) || + * (max_frames > 0 && completed_frames >= max_frames) + * It is illegal to set both usecs and max_frames to zero as this + * would cause interrupts to never be generated. To disable + * coalescing, set usecs = 0 and max_frames = 1. * * Adaptive RX/TX coalescing is an algorithm implemented by some * drivers to improve latency under low packet rates and improve -- cgit v1.2.2 From a27fc96b0317b732b68b5f781bbdeb56ab5082a8 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 15 Aug 2011 14:09:22 +0000 Subject: ethtool: Note common alternate exit condition for interrupt coalescing Many implementations ignore the value of max_frames and do not treat usecs == 0 as special. Document this as deprecated. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 42378b34ae8f..3829712ccc05 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -173,6 +173,12 @@ struct ethtool_eeprom { * would cause interrupts to never be generated. To disable * coalescing, set usecs = 0 and max_frames = 1. * + * Some implementations ignore the value of max_frames and use the + * condition: + * time_since_first_completion >= usecs + * This is deprecated. Drivers for hardware that does not support + * counting completions should validate that max_frames == !rx_usecs. + * * Adaptive RX/TX coalescing is an algorithm implemented by some * drivers to improve latency under low packet rates and improve * throughput under high packet rates. Some drivers only implement -- cgit v1.2.2 From fbc854027c91fa2813ae7f9de43cc0b5c1119f41 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Tue, 16 Aug 2011 18:08:06 +0200 Subject: ext3: remove deprecated oldalloc For a long time now orlov is the default block allocator in the ext3. It performs better than the old one and no one seems to claim otherwise so we can safely drop it and make oldalloc and orlov mount option deprecated. Signed-off-by: Lukas Czerner Signed-off-by: Jan Kara --- include/linux/ext3_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 67a803aee619..96a30b95e5c2 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -381,7 +381,7 @@ struct ext3_inode { * Mount flags */ #define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */ -#define EXT3_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */ +/* EXT3_MOUNT_OLDALLOC was there */ #define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */ #define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */ #define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ -- cgit v1.2.2 From bdeab991918663aed38757904219e8398214334c Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Sun, 14 Aug 2011 19:45:55 +0000 Subject: rps: Add flag to skb to indicate rxhash is based on L4 tuple The l4_rxhash flag was added to the skb structure to indicate that the rxhash value was computed over the 4 tuple for the packet which includes the port information in the encapsulated transport packet. This is used by the stack to preserve the rxhash value in __skb_rx_tunnel. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/skbuff.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 7b996ed86d5b..f902c331217b 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -414,6 +414,7 @@ struct sk_buff { __u8 ndisc_nodetype:2; #endif __u8 ooo_okay:1; + __u8 l4_rxhash:1; kmemcheck_bitfield_end(flags2); /* 0/13 bit hole */ @@ -572,11 +573,11 @@ extern unsigned int skb_find_text(struct sk_buff *skb, unsigned int from, unsigned int to, struct ts_config *config, struct ts_state *state); -extern __u32 __skb_get_rxhash(struct sk_buff *skb); +extern void __skb_get_rxhash(struct sk_buff *skb); static inline __u32 skb_get_rxhash(struct sk_buff *skb) { if (!skb->rxhash) - skb->rxhash = __skb_get_rxhash(skb); + __skb_get_rxhash(skb); return skb->rxhash; } -- cgit v1.2.2 From 01789349ee52e4a3faf376f1485303d9723c4f1f Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Tue, 16 Aug 2011 06:29:00 +0000 Subject: net: introduce IFF_UNICAST_FLT private flag Use IFF_UNICAST_FTL to find out if driver handles unicast address filtering. In case it does not, promisc mode is entered. Patch also fixes following drivers: stmmac, niu: support uc filtering and yet it propagated ndo_set_multicast_list bna, benet, pxa168_eth, ks8851, ks8851_mll, ksz884x : has set ndo_set_rx_mode but do not support uc filtering Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/if.h | 1 + include/linux/netdevice.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if.h b/include/linux/if.h index 03489ca92ded..db20bd4fd16b 100644 --- a/include/linux/if.h +++ b/include/linux/if.h @@ -78,6 +78,7 @@ * datapath port */ #define IFF_TX_SKB_SHARING 0x10000 /* The interface supports sharing * skbs on transmit */ +#define IFF_UNICAST_FLT 0x20000 /* Supports unicast filtering */ #define IF_GET_IFACE 0x0001 /* for querying only */ #define IF_GET_PROTO 0x0002 diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ddee79bb8f15..96e4f7e0ad68 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -723,6 +723,8 @@ struct netdev_tc_txq { * * void (*ndo_set_rx_mode)(struct net_device *dev); * This function is called device changes address list filtering. + * If driver handles unicast address filtering, it should set + * IFF_UNICAST_FLT to its priv_flags. * * void (*ndo_set_multicast_list)(struct net_device *dev); * This function is called when the multicast address list changes. -- cgit v1.2.2 From b81693d9149c598302e8eb9c20cb20330d922c8e Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Tue, 16 Aug 2011 06:29:02 +0000 Subject: net: remove ndo_set_multicast_list callback Remove no longer used operation. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 96e4f7e0ad68..125f9fb8ece4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -726,9 +726,6 @@ struct netdev_tc_txq { * If driver handles unicast address filtering, it should set * IFF_UNICAST_FLT to its priv_flags. * - * void (*ndo_set_multicast_list)(struct net_device *dev); - * This function is called when the multicast address list changes. - * * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); * This function is called when the Media Access Control address * needs to be changed. If this interface is not defined, the @@ -870,7 +867,6 @@ struct net_device_ops { void (*ndo_change_rx_flags)(struct net_device *dev, int flags); void (*ndo_set_rx_mode)(struct net_device *dev); - void (*ndo_set_multicast_list)(struct net_device *dev); int (*ndo_set_mac_address)(struct net_device *dev, void *addr); int (*ndo_validate_addr)(struct net_device *dev); -- cgit v1.2.2 From 4ca2462e94b3b0a2fdd3b777ff2bd9bcd82c6096 Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Fri, 19 Aug 2011 07:26:44 -0700 Subject: net: add the comment for skb->l4_rxhash Signed-off-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/skbuff.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index f902c331217b..ea0b37463860 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -322,6 +322,8 @@ typedef unsigned char *sk_buff_data_t; * @queue_mapping: Queue mapping for multiqueue devices * @ndisc_nodetype: router type (from link layer) * @ooo_okay: allow the mapping of a socket to a queue to be changed + * @l4_rxhash: indicate rxhash is a canonical 4-tuple hash over transport + * ports. * @dma_cookie: a cookie to one of several possible DMA operations * done by skb DMA functions * @secmark: security marking -- cgit v1.2.2 From 49e2258586b423684f03c278149ab46d8f8b6700 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Tue, 9 Aug 2011 16:12:27 -0500 Subject: slub: per cpu cache for partial pages Allow filling out the rest of the kmem_cache_cpu cacheline with pointers to partial pages. The partial page list is used in slab_free() to avoid per node lock taking. In __slab_alloc() we can then take multiple partial pages off the per node partial list in one go reducing node lock pressure. We can also use the per cpu partial list in slab_alloc() to avoid scanning partial lists for pages with free objects. The main effect of a per cpu partial list is that the per node list_lock is taken for batches of partial pages instead of individual ones. Potential future enhancements: 1. The pickup from the partial list could be perhaps be done without disabling interrupts with some work. The free path already puts the page into the per cpu partial list without disabling interrupts. 2. __slab_free() may have some code paths that could use optimization. Performance: Before After ./hackbench 100 process 200000 Time: 1953.047 1564.614 ./hackbench 100 process 20000 Time: 207.176 156.940 ./hackbench 100 process 20000 Time: 204.468 156.940 ./hackbench 100 process 20000 Time: 204.879 158.772 ./hackbench 10 process 20000 Time: 20.153 15.853 ./hackbench 10 process 20000 Time: 20.153 15.986 ./hackbench 10 process 20000 Time: 19.363 16.111 ./hackbench 1 process 20000 Time: 2.518 2.307 ./hackbench 1 process 20000 Time: 2.258 2.339 ./hackbench 1 process 20000 Time: 2.864 2.163 Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/mm_types.h | 14 +++++++++++++- include/linux/slub_def.h | 4 ++++ 2 files changed, 17 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 774b8952deb4..7870e473033c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -79,9 +79,21 @@ struct page { }; /* Third double word block */ - struct list_head lru; /* Pageout list, eg. active_list + union { + struct list_head lru; /* Pageout list, eg. active_list * protected by zone->lru_lock ! */ + struct { /* slub per cpu partial pages */ + struct page *next; /* Next partial slab */ +#ifdef CONFIG_64BIT + int pages; /* Nr of partial slabs left */ + int pobjects; /* Approximate # of objects */ +#else + short int pages; + short int pobjects; +#endif + }; + }; /* Remainder is not double word aligned */ union { diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index f58d6413d230..4890ef79d752 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -36,12 +36,15 @@ enum stat_item { ORDER_FALLBACK, /* Number of times fallback was necessary */ CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */ CMPXCHG_DOUBLE_FAIL, /* Number of times that cmpxchg double did not match */ + CPU_PARTIAL_ALLOC, /* Used cpu partial on alloc */ + CPU_PARTIAL_FREE, /* USed cpu partial on free */ NR_SLUB_STAT_ITEMS }; struct kmem_cache_cpu { void **freelist; /* Pointer to next available object */ unsigned long tid; /* Globally unique transaction id */ struct page *page; /* The slab from which we are allocating */ + struct page *partial; /* Partially allocated frozen slabs */ int node; /* The node of the page (or -1 for debug) */ #ifdef CONFIG_SLUB_STATS unsigned stat[NR_SLUB_STAT_ITEMS]; @@ -79,6 +82,7 @@ struct kmem_cache { int size; /* The size of an object including meta data */ int objsize; /* The size of an object without meta data */ int offset; /* Free pointer offset. */ + int cpu_partial; /* Number of per cpu partial pages to keep around */ struct kmem_cache_order_objects oo; /* Allocation and freeing of slabs */ -- cgit v1.2.2 From 710b7216964d6455cf1b215c43b03a1a79008c7d Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 26 Jul 2011 16:28:29 -0400 Subject: locks: move F_INPROGRESS from fl_type to fl_flags field F_INPROGRESS isn't exposed to userspace. To me it makes more sense in fl_flags.... Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/fs.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 178cdb4f1d4a..327fdd4de85f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1065,6 +1065,7 @@ static inline int file_check_writeable(struct file *filp) #define FL_LEASE 32 /* lease held on this file */ #define FL_CLOSE 64 /* unlock on close */ #define FL_SLEEP 128 /* A blocking lock */ +#define FL_INPROGRESS 256 /* Lease is being broken */ /* * Special return value from posix_lock_file() and vfs_lock_file() for @@ -1111,7 +1112,7 @@ struct file_lock { struct list_head fl_link; /* doubly linked list of all locks */ struct list_head fl_block; /* circular list of blocked processes */ fl_owner_t fl_owner; - unsigned char fl_flags; + unsigned int fl_flags; unsigned char fl_type; unsigned int fl_pid; struct pid *fl_nspid; -- cgit v1.2.2 From 778fc546f749c588aa2f6cd50215d2715c374252 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 26 Jul 2011 18:25:49 -0400 Subject: locks: fix tracking of inprogress lease breaks We currently use a bit in fl_flags to record whether a lease is being broken, and set fl_type to the type (RDLCK or UNLCK) that it will eventually have. This means that once the lease break starts, we forget what the lease's type *used* to be. Breaking a read lease will then result in blocking read opens, even though there's no conflict--because the lease type is now F_UNLCK and we can no longer tell whether it was previously a read or write lease. So, instead keep fl_type as the original type (the type which we enforce), and keep track of whether we're unlocking or merely downgrading by replacing the single FL_INPROGRESS flag by FL_UNLOCK_PENDING and FL_DOWNGRADE_PENDING flags. To get this right we also need to track separate downgrade and break times, to handle the case where a write-leased file gets conflicting opens first for read, then later for write. (I first considered just eliminating the downgrade behavior completely--nfsv4 doesn't need it, and nobody as far as I can tell actually uses it currently--but Jeremy Allison tells me that Windows oplocks do behave this way, so Samba will probably use this some day.) Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/fs.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 327fdd4de85f..76460edf1648 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1065,7 +1065,8 @@ static inline int file_check_writeable(struct file *filp) #define FL_LEASE 32 /* lease held on this file */ #define FL_CLOSE 64 /* unlock on close */ #define FL_SLEEP 128 /* A blocking lock */ -#define FL_INPROGRESS 256 /* Lease is being broken */ +#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */ +#define FL_UNLOCK_PENDING 512 /* Lease is being broken */ /* * Special return value from posix_lock_file() and vfs_lock_file() for @@ -1122,7 +1123,9 @@ struct file_lock { loff_t fl_end; struct fasync_struct * fl_fasync; /* for lease break notifications */ - unsigned long fl_break_time; /* for nonblocking lease breaks */ + /* for lease breaks: */ + unsigned long fl_break_time; + unsigned long fl_downgrade_time; const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */ const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */ -- cgit v1.2.2 From 11fd165c68b73434ca1273e21f21db5eecc90926 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 28 Jul 2011 20:04:09 +0200 Subject: sunrpc: use better NUMA affinities Use NUMA aware allocations to reduce latencies and increase throughput. sunrpc kthreads can use kthread_create_on_node() if pool_mode is "percpu" or "pernode", and svc_prepare_thread()/svc_init_buffer() can also take into account NUMA node affinity for memory allocations. Signed-off-by: Eric Dumazet CC: "J. Bruce Fields" CC: Neil Brown CC: David Miller Reviewed-by: Greg Banks [bfields@redhat.com: fix up caller nfs41_callback_up] Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 223588a976a0..a78a51e93373 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -404,7 +404,7 @@ struct svc_procedure { struct svc_serv *svc_create(struct svc_program *, unsigned int, void (*shutdown)(struct svc_serv *)); struct svc_rqst *svc_prepare_thread(struct svc_serv *serv, - struct svc_pool *pool); + struct svc_pool *pool, int node); void svc_exit_thread(struct svc_rqst *); struct svc_serv * svc_create_pooled(struct svc_program *, unsigned int, void (*shutdown)(struct svc_serv *), -- cgit v1.2.2 From 5b1b0b812a7b1a5b968c5d06d90d1cb88621b941 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 19 Aug 2011 23:49:48 +0200 Subject: PM / Runtime: Add macro to test for runtime PM events This patch (as1482) adds a macro for testing whether or not a pm_message value represents an autosuspend or autoresume (i.e., a runtime PM) event. Encapsulating this notion seems preferable to open-coding the test all over the place. Signed-off-by: Alan Stern Acked-by: Greg Kroah-Hartman Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index f7c84c9abd30..18de9f893497 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -366,6 +366,8 @@ extern struct dev_pm_ops generic_subsys_pm_ops; #define PMSG_AUTO_RESUME ((struct pm_message) \ { .event = PM_EVENT_AUTO_RESUME, }) +#define PMSG_IS_AUTO(msg) (((msg).event & PM_EVENT_AUTO) != 0) + /** * Device run-time power management status. * -- cgit v1.2.2 From bd20eb541ebbb17a5e047cd20e74b9ccf19a4123 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 19 Aug 2011 18:09:38 +0900 Subject: regmap: Allow drivers to specify register defaults It is useful for the register cache code to be able to specify the default values for the device registers. The major use is when restoring the register cache after suspend, knowing the register defaults allows us to skip registers that are at their default values when we resume which can be a substantial win on larger modern devices. For some devices (mostly older ones) the hardware does not support readback so the only way we can know the values is from code and so initializing the cache with default values makes it much easier for drivers work with read/modify/write updates. Signed-off-by: Mark Brown --- include/linux/regmap.h | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 4de137bc16a7..e2200f21c602 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -20,13 +20,25 @@ struct i2c_client; struct spi_device; +/** + * Default value for a register. We use an array of structs rather + * than a simple array as many modern devices have very sparse + * register maps. + * + * @reg: Register address. + * @def: Register default value. + */ +struct reg_default { + unsigned int reg; + unsigned int def; +}; + /** * Configuration for the register map of a device. * * @reg_bits: Number of bits in a register address, mandatory. * @val_bits: Number of bits in a register value, mandatory. * - * @max_register: Optional, specifies the maximum valid register index. * @writeable_reg: Optional callback returning true if the register * can be written to. * @readable_reg: Optional callback returning true if the register @@ -36,16 +48,24 @@ struct spi_device; * @precious_reg: Optional callback returning true if the rgister * should not be read outside of a call from the driver * (eg, a clear on read interrupt status register). + * + * @max_register: Optional, specifies the maximum valid register index. + * @reg_defaults: Power on reset values for registers (for use with + * register cache support). + * @num_reg_defaults: Number of elements in reg_defaults. */ struct regmap_config { int reg_bits; int val_bits; - unsigned int max_register; bool (*writeable_reg)(struct device *dev, unsigned int reg); bool (*readable_reg)(struct device *dev, unsigned int reg); bool (*volatile_reg)(struct device *dev, unsigned int reg); bool (*precious_reg)(struct device *dev, unsigned int reg); + + unsigned int max_register; + struct reg_default *reg_defaults; + int num_reg_defaults; }; typedef int (*regmap_hw_write)(struct device *dev, const void *data, -- cgit v1.2.2 From 1df5981b82d9eabdd6e66d1d9514164c02329345 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 10 Jun 2011 19:28:10 +0100 Subject: mfd: Convert WM831x to use regmap API Factor out the register read/write code to use the register map API. We still need some wm831x specific code and locking in place to check that the user key is handled correctly but only on the write side, reads are not affected by the key. Signed-off-by: Mark Brown Acked-by: Samuel Ortiz --- include/linux/mfd/wm831x/core.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 8dda8ded5cda..44acdb25681b 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -18,6 +18,7 @@ #include #include #include +#include /* * Register values. @@ -361,12 +362,8 @@ struct wm831x { struct mutex io_lock; struct device *dev; - int (*read_dev)(struct wm831x *wm831x, unsigned short reg, - int bytes, void *dest); - int (*write_dev)(struct wm831x *wm831x, unsigned short reg, - int bytes, void *src); - void *control_data; + struct regmap *regmap; int irq; /* Our chip IRQ */ struct mutex irq_lock; @@ -416,4 +413,6 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq); void wm831x_irq_exit(struct wm831x *wm831x); void wm831x_auxadc_init(struct wm831x *wm831x); +extern struct regmap_config wm831x_regmap_config; + #endif -- cgit v1.2.2 From d6c645fc00777a6f8a7df1f580065ec30c71be7b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 17 Jun 2011 13:02:27 +0100 Subject: mfd: Convert WM8994 to use new register map API Signed-off-by: Mark Brown Acked-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index f0b69cdae41c..45df450d869f 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -24,6 +24,7 @@ enum wm8994_type { struct regulator_dev; struct regulator_bulk_data; +struct regmap; #define WM8994_NUM_GPIO_REGS 11 #define WM8994_NUM_LDO_REGS 2 @@ -50,18 +51,12 @@ struct regulator_bulk_data; #define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN) struct wm8994 { - struct mutex io_lock; struct mutex irq_lock; enum wm8994_type type; struct device *dev; - int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, - int bytes, void *dest); - int (*write_dev)(struct wm8994 *wm8994, unsigned short reg, - int bytes, const void *src); - - void *control_data; + struct regmap *regmap; int gpio_base; int irq_base; -- cgit v1.2.2 From 50eeef5d3cea5afcced17a0410e8b0bf88997845 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Aug 2011 16:34:29 +0900 Subject: mfd: Convert WM8400 to regmap API Signed-off-by: Mark Brown --- include/linux/mfd/wm8400-private.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8400-private.h b/include/linux/mfd/wm8400-private.h index 2aab4e93a5c9..0147b6968510 100644 --- a/include/linux/mfd/wm8400-private.h +++ b/include/linux/mfd/wm8400-private.h @@ -25,16 +25,15 @@ #include #include +struct regmap; + #define WM8400_REGISTER_COUNT 0x55 struct wm8400 { struct device *dev; - int (*read_dev)(void *data, char reg, int count, u16 *dst); - int (*write_dev)(void *data, char reg, int count, const u16 *src); - struct mutex io_lock; - void *io_data; + struct regmap *regmap; u16 reg_cache[WM8400_REGISTER_COUNT]; -- cgit v1.2.2 From c1407b6cb22245ae8653cfc195530a9b8eb52879 Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Thu, 11 Aug 2011 16:17:41 +0200 Subject: wireless: Introduce defines for BAR TID_INFO & MULTI_TID fields While at it also fix the indention of the other IEEE80211_BAR_CTRL_ defines. Signed-off-by: Helmut Schaa Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 54c878960872..5286de5fe989 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -816,9 +816,11 @@ struct ieee80211_bar { } __attribute__((packed)); /* 802.11 BAR control masks */ -#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 -#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 - +#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 +#define IEEE80211_BAR_CTRL_MULTI_TID 0x0002 +#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004 +#define IEEE80211_BAR_CTRL_TID_INFO_MASK 0xf000 +#define IEEE80211_BAR_CTRL_TID_INFO_SHIFT 12 #define IEEE80211_HT_MCS_MASK_LEN 10 -- cgit v1.2.2 From 984e5befbafe2799be28c2209226a82fb3a3be7a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 11 Aug 2011 23:46:44 +0200 Subject: bcma: implement BCM4331 workaround for external PA lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We need to disable ext. PA lines for reading SPROM. It's disabled by default, but this patch allows using bcma after loading wl, which leaves workaround enabled. Cc: Arend van Spriel Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 6083725dd22e..a7ae33d06f24 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -283,6 +283,22 @@ #define BCMA_CC_PPL_PCHI_OFF 5 #define BCMA_CC_PPL_PCHI_MASK 0x0000003f +/* BCM4331 ChipControl numbers. */ +#define BCMA_CHIPCTL_4331_BT_COEXIST BIT(0) /* 0 disable */ +#define BCMA_CHIPCTL_4331_SECI BIT(1) /* 0 SECI is disabled (JATG functional) */ +#define BCMA_CHIPCTL_4331_EXT_LNA BIT(2) /* 0 disable */ +#define BCMA_CHIPCTL_4331_SPROM_GPIO13_15 BIT(3) /* sprom/gpio13-15 mux */ +#define BCMA_CHIPCTL_4331_EXTPA_EN BIT(4) /* 0 ext pa disable, 1 ext pa enabled */ +#define BCMA_CHIPCTL_4331_GPIOCLK_ON_SPROMCS BIT(5) /* set drive out GPIO_CLK on sprom_cs pin */ +#define BCMA_CHIPCTL_4331_PCIE_MDIO_ON_SPROMCS BIT(6) /* use sprom_cs pin as PCIE mdio interface */ +#define BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5 BIT(7) /* aband extpa will be at gpio2/5 and sprom_dout */ +#define BCMA_CHIPCTL_4331_OVR_PIPEAUXCLKEN BIT(8) /* override core control on pipe_AuxClkEnable */ +#define BCMA_CHIPCTL_4331_OVR_PIPEAUXPWRDOWN BIT(9) /* override core control on pipe_AuxPowerDown */ +#define BCMA_CHIPCTL_4331_PCIE_AUXCLKEN BIT(10) /* pcie_auxclkenable */ +#define BCMA_CHIPCTL_4331_PCIE_PIPE_PLLDOWN BIT(11) /* pcie_pipe_pllpowerdown */ +#define BCMA_CHIPCTL_4331_BT_SHD0_ON_GPIO4 BIT(16) /* enable bt_shd0 at gpio4 */ +#define BCMA_CHIPCTL_4331_BT_SHD1_ON_GPIO5 BIT(17) /* enable bt_shd1 at gpio5 */ + /* Data for the PMU, if available. * Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU) */ @@ -342,6 +358,8 @@ extern void bcma_core_chipcommon_init(struct bcma_drv_cc *cc); extern void bcma_chipco_suspend(struct bcma_drv_cc *cc); extern void bcma_chipco_resume(struct bcma_drv_cc *cc); +void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable); + extern void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks); -- cgit v1.2.2 From 6709a6d96e0f9b05a07999f720a15389ad242a4a Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Thu, 11 Aug 2011 19:35:11 -0700 Subject: ieee80211: introduce Self Protected Action codes 802.11s introduces a new action frame category, add action codes as well as an entry in ieee80211_mgmt. Signed-off-by: Thomas Pedersen Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 5286de5fe989..0750987f2a1d 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -749,6 +749,10 @@ struct ieee80211_mgmt { */ u8 variable[0]; } __attribute__((packed)) plink_action; + struct { + u8 action_code; + u8 variable[0]; + } __attribute__((packed)) self_prot; struct{ u8 action_code; u8 variable[0]; @@ -1311,6 +1315,16 @@ enum ieee80211_ht_actioncode { WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, }; +/* Self Protected Action codes */ +enum ieee80211_self_protected_actioncode { + WLAN_SP_RESERVED = 0, + WLAN_SP_MESH_PEERING_OPEN = 1, + WLAN_SP_MESH_PEERING_CONFIRM = 2, + WLAN_SP_MESH_PEERING_CLOSE = 3, + WLAN_SP_MGK_INFORM = 4, + WLAN_SP_MGK_ACK = 5, +}; + /* Security key length */ enum ieee80211_key_len { WLAN_KEY_LEN_WEP40 = 5, -- cgit v1.2.2 From 8db098507c5cbe499061d0f6aea426a36e7c72d7 Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Fri, 12 Aug 2011 20:01:00 -0700 Subject: mac80211: update mesh peering frame format This patch updates the mesh peering frames to the format specified in the recently ratified 802.11s standard. Several changes took place to make this happen: - Change RX path to handle new self-protected frames - Add new Peering management IE - Remove old Peer Link IE - Remove old plink_action field in ieee80211_mgmt header These changes by themselves would either break peering, or work by coincidence, so squash them all into this patch. Signed-off-by: Thomas Pedersen Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 0750987f2a1d..819954a607f1 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -736,19 +736,6 @@ struct ieee80211_mgmt { __le16 params; __le16 reason_code; } __attribute__((packed)) delba; - struct{ - u8 action_code; - /* capab_info for open and confirm, - * reason for close - */ - __le16 aux; - /* Followed in plink_confirm by status - * code, AID and supported rates, - * and directly by supported rates in - * plink_open and plink_close - */ - u8 variable[0]; - } __attribute__((packed)) plink_action; struct { u8 action_code; u8 variable[0]; @@ -1200,11 +1187,6 @@ enum ieee80211_eid { WLAN_EID_MESH_ID = 114, WLAN_EID_LINK_METRIC_REPORT = 115, WLAN_EID_CONGESTION_NOTIFICATION = 116, - /* Note that the Peer Link IE has been replaced with the similar - * Peer Management IE. We will keep the former definition until mesh - * code is changed to comply with latest 802.11s drafts. - */ - WLAN_EID_PEER_LINK = 55, /* no longer in 802.11s drafts */ WLAN_EID_PEER_MGMT = 117, WLAN_EID_CHAN_SWITCH_PARAM = 118, WLAN_EID_MESH_AWAKE_WINDOW = 119, -- cgit v1.2.2 From 36c704fded53ee0d6866e8ae7f7e3d29cd4315b9 Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Thu, 11 Aug 2011 19:35:14 -0700 Subject: ieee80211: add mesh action codes Signed-off-by: Thomas Pedersen Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 819954a607f1..58033c146dd3 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1307,6 +1307,21 @@ enum ieee80211_self_protected_actioncode { WLAN_SP_MGK_ACK = 5, }; +/* Mesh action codes */ +enum ieee80211_mesh_actioncode { + WLAN_MESH_ACTION_LINK_METRIC_REPORT, + WLAN_MESH_ACTION_HWMP_PATH_SELECTION, + WLAN_MESH_ACTION_GATE_ANNOUNCEMENT, + WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION, + WLAN_MESH_ACTION_MCCA_SETUP_REQUEST, + WLAN_MESH_ACTION_MCCA_SETUP_REPLY, + WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST, + WLAN_MESH_ACTION_MCCA_ADVERTISEMENT, + WLAN_MESH_ACTION_MCCA_TEARDOWN, + WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST, + WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE, +}; + /* Security key length */ enum ieee80211_key_len { WLAN_KEY_LEN_WEP40 = 5, -- cgit v1.2.2 From 25d49e4d63564c7004a4d6735d1d8c3cc41a7394 Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Thu, 11 Aug 2011 19:35:15 -0700 Subject: mac80211: update mesh path selection frame format Make mesh path selection frames Mesh Action category, remove outdated Mesh Path Selection category and defines, use updated reason codes, add mesh_action_is_path_sel for readability, and update/correct path selection IEs. Signed-off-by: Thomas Pedersen Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 58033c146dd3..03cfbf393a63 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -629,6 +629,7 @@ struct ieee80211_rann_ie { u8 rann_ttl; u8 rann_addr[6]; u32 rann_seq; + u32 rann_interval; u32 rann_metric; } __attribute__ ((packed)); @@ -1269,9 +1270,6 @@ enum ieee80211_category { WLAN_CATEGORY_MULTIHOP_ACTION = 14, WLAN_CATEGORY_SELF_PROTECTED = 15, WLAN_CATEGORY_WMM = 17, - /* TODO: remove MESH_PATH_SEL after mesh is updated - * to current 802.11s draft */ - WLAN_CATEGORY_MESH_PATH_SEL = 32, WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, WLAN_CATEGORY_VENDOR_SPECIFIC = 127, }; -- cgit v1.2.2 From 939f325f4a0fb7eb189268a4593e427d3a075514 Mon Sep 17 00:00:00 2001 From: "kuninori.morimoto.gx@renesas.com" Date: Mon, 25 Jul 2011 00:39:30 -0700 Subject: usb: add usb_endpoint_maxp() macro Signed-off-by: Kuninori Morimoto Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 0fd3fbdd8283..e809deabf503 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -34,6 +34,7 @@ #define __LINUX_USB_CH9_H #include /* __u8 etc */ +#include /* le16_to_cpu */ /*-------------------------------------------------------------------------*/ @@ -570,6 +571,17 @@ static inline int usb_endpoint_is_isoc_out( return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd); } +/** + * usb_endpoint_maxp - get endpoint's max packet size + * @epd: endpoint to be checked + * + * Returns @epd's max packet + */ +static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd) +{ + return le16_to_cpu(epd->wMaxPacketSize); +} + /*-------------------------------------------------------------------------*/ /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */ -- cgit v1.2.2 From da6819dbffb34861b79d91c05c4eeb37a3792433 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 19 Aug 2011 18:10:56 +0300 Subject: usb: ch9: add function defines from ch9, USB 3.0 spec not to confuse with Table 9-7 in USB 2.0 spec Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index e809deabf503..1ded281eff88 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -144,6 +144,11 @@ #define USB_INTRF_FUNC_SUSPEND 0 /* function suspend */ #define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00 +/* + * Suspend Options, Table 9-7 USB 3.0 spec + */ +#define USB_INTRF_FUNC_SUSPEND_LP (1 << (8 + 0)) +#define USB_INTRF_FUNC_SUSPEND_RW (1 << (8 + 1)) #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */ -- cgit v1.2.2 From 131ea6675c761f655d43b808dd0fe83d15d5cdd3 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Fri, 19 Aug 2011 06:25:00 +0000 Subject: net: add APIs for manipulating skb page fragments. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The primary aim is to add skb_frag_(ref|unref) in order to remove the use of bare get/put_page on SKB pages fragments and to isolate users from subsequent changes to the skb_frag_t data structure. Signed-off-by: Ian Campbell Cc: "David S. Miller" Cc: Eric Dumazet Cc: "Michał Mirosław" Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- include/linux/skbuff.h | 170 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 168 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ea0b37463860..7b0e1773f9cd 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -29,6 +29,7 @@ #include #include #include +#include /* Don't change this without changing skb_csum_unnecessary! */ #define CHECKSUM_NONE 0 @@ -1129,14 +1130,47 @@ static inline int skb_pagelen(const struct sk_buff *skb) return len + skb_headlen(skb); } -static inline void skb_fill_page_desc(struct sk_buff *skb, int i, - struct page *page, int off, int size) +/** + * __skb_fill_page_desc - initialise a paged fragment in an skb + * @skb: buffer containing fragment to be initialised + * @i: paged fragment index to initialise + * @page: the page to use for this fragment + * @off: the offset to the data with @page + * @size: the length of the data + * + * Initialises the @i'th fragment of @skb to point to &size bytes at + * offset @off within @page. + * + * Does not take any additional reference on the fragment. + */ +static inline void __skb_fill_page_desc(struct sk_buff *skb, int i, + struct page *page, int off, int size) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; frag->page = page; frag->page_offset = off; frag->size = size; +} + +/** + * skb_fill_page_desc - initialise a paged fragment in an skb + * @skb: buffer containing fragment to be initialised + * @i: paged fragment index to initialise + * @page: the page to use for this fragment + * @off: the offset to the data with @page + * @size: the length of the data + * + * As per __skb_fill_page_desc() -- initialises the @i'th fragment of + * @skb to point to &size bytes at offset @off within @page. In + * addition updates @skb such that @i is the last fragment. + * + * Does not take any additional reference on the fragment. + */ +static inline void skb_fill_page_desc(struct sk_buff *skb, int i, + struct page *page, int off, int size) +{ + __skb_fill_page_desc(skb, i, page, off, size); skb_shinfo(skb)->nr_frags = i + 1; } @@ -1630,6 +1664,138 @@ static inline void netdev_free_page(struct net_device *dev, struct page *page) __free_page(page); } +/** + * skb_frag_page - retrieve the page refered to by a paged fragment + * @frag: the paged fragment + * + * Returns the &struct page associated with @frag. + */ +static inline struct page *skb_frag_page(const skb_frag_t *frag) +{ + return frag->page; +} + +/** + * __skb_frag_ref - take an addition reference on a paged fragment. + * @frag: the paged fragment + * + * Takes an additional reference on the paged fragment @frag. + */ +static inline void __skb_frag_ref(skb_frag_t *frag) +{ + get_page(skb_frag_page(frag)); +} + +/** + * skb_frag_ref - take an addition reference on a paged fragment of an skb. + * @skb: the buffer + * @f: the fragment offset. + * + * Takes an additional reference on the @f'th paged fragment of @skb. + */ +static inline void skb_frag_ref(struct sk_buff *skb, int f) +{ + __skb_frag_ref(&skb_shinfo(skb)->frags[f]); +} + +/** + * __skb_frag_unref - release a reference on a paged fragment. + * @frag: the paged fragment + * + * Releases a reference on the paged fragment @frag. + */ +static inline void __skb_frag_unref(skb_frag_t *frag) +{ + put_page(skb_frag_page(frag)); +} + +/** + * skb_frag_unref - release a reference on a paged fragment of an skb. + * @skb: the buffer + * @f: the fragment offset + * + * Releases a reference on the @f'th paged fragment of @skb. + */ +static inline void skb_frag_unref(struct sk_buff *skb, int f) +{ + __skb_frag_unref(&skb_shinfo(skb)->frags[f]); +} + +/** + * skb_frag_address - gets the address of the data contained in a paged fragment + * @frag: the paged fragment buffer + * + * Returns the address of the data within @frag. The page must already + * be mapped. + */ +static inline void *skb_frag_address(const skb_frag_t *frag) +{ + return page_address(skb_frag_page(frag)) + frag->page_offset; +} + +/** + * skb_frag_address_safe - gets the address of the data contained in a paged fragment + * @frag: the paged fragment buffer + * + * Returns the address of the data within @frag. Checks that the page + * is mapped and returns %NULL otherwise. + */ +static inline void *skb_frag_address_safe(const skb_frag_t *frag) +{ + void *ptr = page_address(skb_frag_page(frag)); + if (unlikely(!ptr)) + return NULL; + + return ptr + frag->page_offset; +} + +/** + * __skb_frag_set_page - sets the page contained in a paged fragment + * @frag: the paged fragment + * @page: the page to set + * + * Sets the fragment @frag to contain @page. + */ +static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page) +{ + frag->page = page; + __skb_frag_ref(frag); +} + +/** + * skb_frag_set_page - sets the page contained in a paged fragment of an skb + * @skb: the buffer + * @f: the fragment offset + * @page: the page to set + * + * Sets the @f'th fragment of @skb to contain @page. + */ +static inline void skb_frag_set_page(struct sk_buff *skb, int f, + struct page *page) +{ + __skb_frag_set_page(&skb_shinfo(skb)->frags[f], page); +} + +/** + * skb_frag_dma_map - maps a paged fragment via the DMA API + * @device: the device to map the fragment to + * @frag: the paged fragment to map + * @offset: the offset within the fragment (starting at the + * fragment's own offset) + * @size: the number of bytes to map + * @direction: the direction of the mapping (%PCI_DMA_*) + * + * Maps the page associated with @frag to @device. + */ +static inline dma_addr_t skb_frag_dma_map(struct device *dev, + const skb_frag_t *frag, + size_t offset, size_t size, + enum dma_data_direction dir) +{ + return dma_map_page(dev, skb_frag_page(frag), + frag->page_offset + offset, size, dir); +} + /** * skb_clone_writable - is the header of a clone writable * @skb: buffer to check -- cgit v1.2.2 From cbc4663552ee476f57933920d782222d94878e7e Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 11 Aug 2011 14:36:21 -0400 Subject: dynamic_debug: Add __dynamic_dev_dbg Unlike dynamic_pr_debug, dynamic uses of dev_dbg can not currently add task_pid/KBUILD_MODNAME/__func__/__LINE__ to selected debug output. Add a new function similar to dynamic_pr_debug to optionally emit these prefixes. Cc: Aloisio Almeida Noticed-by: Aloisio Almeida Signed-off-by: Joe Perches Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 5 +++++ include/linux/dynamic_debug.h | 10 ++++++++-- 2 files changed, 13 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index c20dfbfc49b4..4639419522da 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -785,6 +785,8 @@ extern const char *dev_driver_string(const struct device *dev); #ifdef CONFIG_PRINTK +extern int __dev_printk(const char *level, const struct device *dev, + struct va_format *vaf); extern int dev_printk(const char *level, const struct device *dev, const char *fmt, ...) __attribute__ ((format (printf, 3, 4))); @@ -805,6 +807,9 @@ extern int _dev_info(const struct device *dev, const char *fmt, ...) #else +static inline int __dev_printk(const char *level, const struct device *dev, + struct va_format *vaf) + { return 0; } static inline int dev_printk(const char *level, const struct device *dev, const char *fmt, ...) __attribute__ ((format (printf, 3, 4))); diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index e747ecd48e1c..bdf15319944e 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -47,6 +47,13 @@ extern int ddebug_remove_module(const char *mod_name); extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) __attribute__ ((format (printf, 2, 3))); +struct device; + +extern int __dynamic_dev_dbg(struct _ddebug *descriptor, + const struct device *dev, + const char *fmt, ...) + __attribute__ ((format (printf, 3, 4))); + #define dynamic_pr_debug(fmt, ...) do { \ static struct _ddebug descriptor \ __used \ @@ -57,7 +64,6 @@ extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \ } while (0) - #define dynamic_dev_dbg(dev, fmt, ...) do { \ static struct _ddebug descriptor \ __used \ @@ -65,7 +71,7 @@ extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ _DPRINTK_FLAGS_DEFAULT }; \ if (unlikely(descriptor.enabled)) \ - dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \ + __dynamic_dev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__); \ } while (0) #else -- cgit v1.2.2 From fae8d206a188080d3d23b621fc2652f15f3457b6 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Thu, 11 Aug 2011 14:36:38 -0400 Subject: dynamic_debug: remove unused control variables Remove no longer used dynamic debug control variables. The definitions were removed a while ago, but we forgot to clean up the extern references. Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- include/linux/dynamic_debug.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index bdf15319944e..843cb9eb4226 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -1,13 +1,6 @@ #ifndef _DYNAMIC_DEBUG_H #define _DYNAMIC_DEBUG_H -/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which - * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They - * use independent hash functions, to reduce the chance of false positives. - */ -extern long long dynamic_debug_enabled; -extern long long dynamic_debug_enabled2; - /* * An instance of this structure is created in a special * ELF section at every dynamic debug callsite. At runtime, -- cgit v1.2.2 From ffa10cb47a94c9b456c83301c8047e2a898dd409 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Thu, 11 Aug 2011 14:36:48 -0400 Subject: dynamic_debug: make netdev_dbg() call __netdev_printk() Previously, if dynamic debug was enabled netdev_dbg() was using dynamic_dev_dbg() to print out the underlying msg. Fix this by making sure netdev_dbg() uses __netdev_printk(). Cc: David S. Miller Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- include/linux/dynamic_debug.h | 17 +++++++++++++++++ include/linux/netdevice.h | 6 ++++-- 2 files changed, 21 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 843cb9eb4226..feaac1ee3001 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -47,6 +47,13 @@ extern int __dynamic_dev_dbg(struct _ddebug *descriptor, const char *fmt, ...) __attribute__ ((format (printf, 3, 4))); +struct net_device; + +extern int __dynamic_netdev_dbg(struct _ddebug *descriptor, + const struct net_device *dev, + const char *fmt, ...) + __attribute__ ((format (printf, 3, 4))); + #define dynamic_pr_debug(fmt, ...) do { \ static struct _ddebug descriptor \ __used \ @@ -67,6 +74,16 @@ extern int __dynamic_dev_dbg(struct _ddebug *descriptor, __dynamic_dev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__); \ } while (0) +#define dynamic_netdev_dbg(dev, fmt, ...) do { \ + static struct _ddebug descriptor \ + __used \ + __attribute__((section("__verbose"), aligned(8))) = \ + { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ + _DPRINTK_FLAGS_DEFAULT }; \ + if (unlikely(descriptor.enabled)) \ + __dynamic_netdev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__);\ + } while (0) + #else static inline int ddebug_remove_module(const char *mod) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ddee79bb8f15..9333a0300c5e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2617,6 +2617,9 @@ static inline const char *netdev_name(const struct net_device *dev) return dev->name; } +extern int __netdev_printk(const char *level, const struct net_device *dev, + struct va_format *vaf); + extern int netdev_printk(const char *level, const struct net_device *dev, const char *format, ...) __attribute__ ((format (printf, 3, 4))); @@ -2644,8 +2647,7 @@ extern int netdev_info(const struct net_device *dev, const char *format, ...) #elif defined(CONFIG_DYNAMIC_DEBUG) #define netdev_dbg(__dev, format, args...) \ do { \ - dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \ - netdev_name(__dev), ##args); \ + dynamic_netdev_dbg(__dev, format, ##args); \ } while (0) #else #define netdev_dbg(__dev, format, args...) \ -- cgit v1.2.2 From b5fb0a03214dfd02bc34bda659d5b89ef12741b2 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Thu, 11 Aug 2011 14:36:53 -0400 Subject: dynamic_debug: make netif_dbg() call __netdev_printk() Previously, netif_dbg() was using dynamic_dev_dbg() to perform the underlying printk. Fix it to use __netdev_printk(), instead. Cc: David S. Miller Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- include/linux/netdevice.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 9333a0300c5e..279726039f00 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2714,9 +2714,7 @@ do { \ #define netif_dbg(priv, type, netdev, format, args...) \ do { \ if (netif_msg_##type(priv)) \ - dynamic_dev_dbg((netdev)->dev.parent, \ - "%s: " format, \ - netdev_name(netdev), ##args); \ + dynamic_netdev_dbg(netdev, format, ##args); \ } while (0) #else #define netif_dbg(priv, type, dev, format, args...) \ -- cgit v1.2.2 From 29cc88979a8818cd8c5019426e945aed118b400e Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 23 Aug 2011 03:12:03 -0700 Subject: USB: use usb_endpoint_maxp() instead of le16_to_cpu() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now ${LINUX}/drivers/usb/* can use usb_endpoint_maxp(desc) to get maximum packet size instead of le16_to_cpu(desc->wMaxPacketSize). This patch fix it up Cc: Armin Fuerst Cc: Pavel Machek Cc: Johannes Erdfelt Cc: Vojtech Pavlik Cc: Oliver Neukum Cc: David Kubicek Cc: Johan Hovold Cc: Brad Hards Acked-by: Felipe Balbi Cc: Sebastian Andrzej Siewior Cc: Thomas Dahlmann Cc: David Brownell Cc: David Lopo Cc: Alan Stern Cc: Michal Nazarewicz Cc: Xie Xiaobo Cc: Li Yang Cc: Jiang Bo Cc: Yuan-hsin Chen Cc: Darius Augulis Cc: Xiaochen Shen Cc: Yoshihiro Shimoda Cc: OKI SEMICONDUCTOR, Cc: Robert Jarzmik Cc: Ben Dooks Cc: Thomas Abraham Cc: Herbert Pötzl Cc: Arnaud Patard Cc: Roman Weissgaerber Acked-by: Sarah Sharp Cc: Tony Olech Cc: Florian Floe Echtler Cc: Christian Lucht Cc: Juergen Stuber Cc: Georges Toth Cc: Bill Ryder Cc: Kuba Ober Cc: Inaky Perez-Gonzalez Signed-off-by: Kuninori Morimoto Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 73c7df489607..c19f9100c307 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1574,7 +1574,7 @@ usb_maxpacket(struct usb_device *udev, int pipe, int is_out) return 0; /* NOTE: only 0x07ff bits are for packet size... */ - return le16_to_cpu(ep->desc.wMaxPacketSize); + return usb_endpoint_maxp(&ep->desc); } /* ----------------------------------------------------------------------- */ -- cgit v1.2.2 From 6a3e492b6daaf7ec4dc41e51d87d2aae8ff886f2 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 14 Jul 2011 14:35:12 +0200 Subject: TTY: serial, remove tasklet for tty_wakeup tty_wakeup can be called from any context. So there is no need to have an extra tasklet for calling that. Hence save some space and remove the tasklet completely. Signed-off-by: Jiri Slaby Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index a5c31146a337..76e110363745 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -384,7 +384,6 @@ struct uart_state { int pm_state; struct circ_buf xmit; - struct tasklet_struct tlet; struct uart_port *uart_port; }; -- cgit v1.2.2 From 906cbe1364d94da7cbf74c1d05e3e78b2883f661 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 14 Jul 2011 14:35:14 +0200 Subject: TTY: remove tty_locked We used it really only serial and ami_serial. The rest of the callsites were BUG/WARN_ONs to check if BTM is held. Now that we pruned tty_locked from both of the real users, we can get rid of tty_lock along with __big_tty_mutex_owner. Signed-off-by: Jiri Slaby Acked-by: Arnd Bergmann Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 44bc0c5617e1..6d5eceb165be 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -600,8 +600,6 @@ extern long vt_compat_ioctl(struct tty_struct *tty, /* functions for preparation of BKL removal */ extern void __lockfunc tty_lock(void) __acquires(tty_lock); extern void __lockfunc tty_unlock(void) __releases(tty_lock); -extern struct task_struct *__big_tty_mutex_owner; -#define tty_locked() (current == __big_tty_mutex_owner) /* * wait_event_interruptible_tty -- wait for a condition with the tty lock held -- cgit v1.2.2 From a74036f51272975e9538e80cd1bb64dce164b208 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Mon, 15 Aug 2011 10:17:51 +0100 Subject: tty: serial: allow ports to override the irq handler Some serial ports may have unusal requirements for interrupt handling (e.g. the Synopsys DesignWare 8250-alike port and it's busy detect interrupt). Add a .handle_irq callback that can be used for platforms to override the interrupt behaviour in a similar fashion to the .serial_out and .serial_in callbacks. Signed-off-by: Jamie Iles Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 76e110363745..c31ae43c073d 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -300,6 +300,7 @@ struct uart_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + int (*handle_irq)(struct uart_port *); void (*pm)(struct uart_port *, unsigned int state, unsigned int old); unsigned int irq; /* irq number */ -- cgit v1.2.2 From 583d28e92f667eb6cc81ea87daaa7e321c23fe14 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Mon, 15 Aug 2011 10:17:52 +0100 Subject: tty: serial8250: allow platforms to override irq handler Some ports (e.g. Synopsys DesignWare 8250) have special requirements for handling the interrupts. Allow these platforms to specify their own interrupt handler that will override the default. serial8250_handle_irq() is provided so that platforms can extend the IRQ handler rather than completely replacing it. Signed-off-by: Jamie Iles Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 97f5b45bbc07..1f05bbeac01e 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -35,6 +35,7 @@ struct plat_serial8250_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + int (*handle_irq)(struct uart_port *); void (*pm)(struct uart_port *, unsigned int state, unsigned old); }; @@ -80,6 +81,7 @@ extern void serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old); extern void serial8250_do_pm(struct uart_port *port, unsigned int state, unsigned int oldstate); +int serial8250_handle_irq(struct uart_port *port, unsigned int iir); extern void serial8250_set_isa_configurator(void (*v) (int port, struct uart_port *up, -- cgit v1.2.2 From 4834d028978583dfe8e1fc19f1180ceb03d8dfb7 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Mon, 15 Aug 2011 10:17:55 +0100 Subject: tty: serial8250: remove UPIO_DWAPB{,32} Now that platforms can override the port IRQ handler and the only user of these UPIO modes has been converted over, kill off UPIO_DWAPB and UPIO_DWAPB32. Acked-by: Alan Cox Signed-off-by: Jamie Iles Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index c31ae43c073d..493773e3b46d 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -318,9 +318,7 @@ struct uart_port { #define UPIO_MEM32 (3) #define UPIO_AU (4) /* Au1x00 type IO */ #define UPIO_TSI (5) /* Tsi108/109 type IO */ -#define UPIO_DWAPB (6) /* DesignWare APB UART */ -#define UPIO_RM9000 (7) /* RM9000 type IO */ -#define UPIO_DWAPB32 (8) /* DesignWare APB UART (32 bit accesses) */ +#define UPIO_RM9000 (6) /* RM9000 type IO */ unsigned int read_status_mask; /* driver specific */ unsigned int ignore_status_mask; /* driver specific */ -- cgit v1.2.2 From 6b1a98d1c4851235d9b6764b3f7b7db7909fc760 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Tue, 16 Aug 2011 17:47:46 +0100 Subject: tty: serial8250: add helpers for the DesignWare 8250 The Synopsys DesignWare 8250 is an 8250 that has an extra interrupt that gets raised when writing to the LCR when busy. To handle this we need special serial_out, serial_in and handle_irq methods. Add a new function serial8250_use_designware_io() that configures a uart_port with these accessors. Cc: Alan Cox Acked-by: Arnd Bergmann Signed-off-by: Jamie Iles Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 1f05bbeac01e..09e2dbcd7ca3 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -86,5 +86,13 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir); extern void serial8250_set_isa_configurator(void (*v) (int port, struct uart_port *up, unsigned short *capabilities)); +#ifndef SERIAL_8250_DW +extern int serial8250_use_designware_io(struct uart_port *up); +#else +static inline int serial8250_use_designware_io(struct uart_port *up) +{ + return -EIO; +} +#endif #endif -- cgit v1.2.2 From d27769ec3df1a8de9ca450d2dcd72d1ab259ba32 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 23 Aug 2011 20:01:04 +0200 Subject: block: add GENHD_FL_NO_PART_SCAN There are cases where suppressing partition scan is useful - e.g. for lo devices and pseudo SATA devices which advertise to be a disk but get upset on partition scan (some port multiplier control devices show such behavior). This patch adds GENHD_FL_NO_PART_SCAN which suppresses partition scan regardless of the number of possible partitions. disk_partitionable() is renamed to disk_part_scan_enabled() as suppressing partition scan doesn't imply the device can't be partitioned using BLKPG_ADD/DEL_PARTITION calls from userland. show_partition() now directly tests disk_max_parts() to maintain backward-compatibility. -v2: Updated to make it clear that only partition scan is suppressed not partitioning itself as suggested by Kay Sievers. Signed-off-by: Tejun Heo Cc: Kay Sievers Signed-off-by: Jens Axboe --- include/linux/genhd.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 02fa4697a0e5..6d18f3531f18 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -128,6 +128,7 @@ struct hd_struct { #define GENHD_FL_EXT_DEVT 64 /* allow extended devt */ #define GENHD_FL_NATIVE_CAPACITY 128 #define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE 256 +#define GENHD_FL_NO_PART_SCAN 512 enum { DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */ @@ -234,9 +235,10 @@ static inline int disk_max_parts(struct gendisk *disk) return disk->minors; } -static inline bool disk_partitionable(struct gendisk *disk) +static inline bool disk_part_scan_enabled(struct gendisk *disk) { - return disk_max_parts(disk) > 1; + return disk_max_parts(disk) > 1 && + !(disk->flags & GENHD_FL_NO_PART_SCAN); } static inline dev_t disk_devt(struct gendisk *disk) -- cgit v1.2.2 From e03c8dd14915fabc101aa495828d58598dc5af98 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 23 Aug 2011 20:12:04 +0200 Subject: loop: always allow userspace partitions and optionally support automatic scanning Automatic partition scanning can be requested individually per loop device during its setup by setting LO_FLAGS_PARTSCAN. By default, no partition tables are scanned. Userspace can now always add and remove partitions from all loop devices, regardless if the in-kernel partition scanner is enabled or not. The needed partition minor numbers are allocated from the extended minors space, the main loop device numbers will continue to match the loop minors, regardless of the number of partitions used. # grep . /sys/class/block/loop1/loop/* /sys/block/loop1/loop/autoclear:0 /sys/block/loop1/loop/backing_file:/home/kay/data/stuff/part.img /sys/block/loop1/loop/offset:0 /sys/block/loop1/loop/partscan:1 /sys/block/loop1/loop/sizelimit:0 # ls -l /dev/loop* brw-rw---- 1 root disk 7, 0 Aug 14 20:22 /dev/loop0 brw-rw---- 1 root disk 7, 1 Aug 14 20:23 /dev/loop1 brw-rw---- 1 root disk 259, 0 Aug 14 20:23 /dev/loop1p1 brw-rw---- 1 root disk 259, 1 Aug 14 20:23 /dev/loop1p2 brw-rw---- 1 root disk 7, 99 Aug 14 20:23 /dev/loop99 brw-rw---- 1 root disk 259, 2 Aug 14 20:23 /dev/loop99p1 brw-rw---- 1 root disk 259, 3 Aug 14 20:23 /dev/loop99p2 crw------T 1 root root 10, 237 Aug 14 20:22 /dev/loop-control Cc: Karel Zak Cc: Davidlohr Bueso Acked-By: Tejun Heo Signed-off-by: Kay Sievers Signed-off-by: Jens Axboe --- include/linux/loop.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/loop.h b/include/linux/loop.h index 66c194e2d9b9..4367fc507fe9 100644 --- a/include/linux/loop.h +++ b/include/linux/loop.h @@ -76,6 +76,7 @@ enum { LO_FLAGS_READ_ONLY = 1, LO_FLAGS_USE_AOPS = 2, LO_FLAGS_AUTOCLEAR = 4, + LO_FLAGS_PARTSCAN = 8, }; #include /* for __kernel_old_dev_t */ -- cgit v1.2.2 From d5051272fc4860e056e34c92080369a1b63c9378 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Tue, 23 Aug 2011 23:02:48 -0700 Subject: Input: add BTN_TOOL_QUINTTAP for reporting 5 fingers on touchpad "4-finger scroll" is a gesture supported by some applications and operating systems. "Resting thumb" is when a clickpad user rests a finger (e.g., a thumb), in a "click zone" (typically the bottom of the touchpad) in anticipation of click+move=select gestures. Thus, "4-finger scroll + resting thumb" is a 5-finger gesture. To allow userspace to detect this gesture, we send BTN_TOOL_QUINTTAP. Signed-off-by: Daniel Kurtz Acked-by: Chase Douglas Acked-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 068784e17972..4de4b4661f84 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -503,6 +503,7 @@ struct input_keymap_entry { #define BTN_TOOL_FINGER 0x145 #define BTN_TOOL_MOUSE 0x146 #define BTN_TOOL_LENS 0x147 +#define BTN_TOOL_QUINTTAP 0x148 /* Five fingers on trackpad */ #define BTN_TOUCH 0x14a #define BTN_STYLUS 0x14b #define BTN_STYLUS2 0x14c -- cgit v1.2.2 From 5ee68e5b39de5cefecf147c58711f8ab01c21231 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Tue, 9 Aug 2011 16:45:08 -0700 Subject: mac80211: mesh gate implementation In this implementation, a mesh gate is a root node with a certain bit set in its RANN flags. The mpath to this root node is marked as a path to a gate, and added to our list of known gates for this if_mesh. Once a path discovery process fails, we forward the unresolved frames to a known gate. Thanks to Luis Rodriguez for refactoring and bug fix help. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 03cfbf393a63..37f95f2e10f9 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -633,6 +633,10 @@ struct ieee80211_rann_ie { u32 rann_metric; } __attribute__ ((packed)); +enum ieee80211_rann_flags { + RANN_FLAG_IS_GATE = 1 << 0, +}; + #define WLAN_SA_QUERY_TR_ID_LEN 2 struct ieee80211_mgmt { -- cgit v1.2.2 From 0507e159a2b590666982b53ecf6fb2843a5bb423 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Tue, 9 Aug 2011 16:45:10 -0700 Subject: {nl,cfg,mac}80211: let userspace set RANN interval Allow userspace to set Root Announcement Interval for our mesh interface. Also, RANN interval is now in proper units of TUs. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 89dec16b4697..20353bb44840 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1861,6 +1861,9 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a * source mesh point for path selection elements. * + * @NL80211_MESHCONF_HWMP_RANN_INTERVAL: The interval of time (in TUs) between + * root announcements are transmitted. + * * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use @@ -1882,6 +1885,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, NL80211_MESHCONF_HWMP_ROOTMODE, NL80211_MESHCONF_ELEMENT_TTL, + NL80211_MESHCONF_HWMP_RANN_INTERVAL, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, -- cgit v1.2.2 From 16dd7267f460739b3e29d984e73f05c5ffe2b142 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Tue, 9 Aug 2011 16:45:11 -0700 Subject: {nl,cfg,mac}80211: let userspace make meshif mesh gate Allow userspace to set NL80211_MESHCONF_GATE_ANNOUNCEMENTS attribute, which will advertise this mesh node as being a mesh gate. NL80211_HWMP_ROOTMODE must be set or this will do nothing. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/nl80211.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 20353bb44840..3769303d6fa6 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1864,6 +1864,10 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_HWMP_RANN_INTERVAL: The interval of time (in TUs) between * root announcements are transmitted. * + * @NL80211_MESHCONF_GATE_ANNOUNCEMENTS: Advertise that this mesh station has + * access to a broader network beyond the MBSS. This is done via Root + * Announcement frames. + * * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use @@ -1886,6 +1890,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_HWMP_ROOTMODE, NL80211_MESHCONF_ELEMENT_TTL, NL80211_MESHCONF_HWMP_RANN_INTERVAL, + NL80211_MESHCONF_GATE_ANNOUNCEMENTS, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, -- cgit v1.2.2 From e8753043f9fbabffbf087c7f4b514c50ef89541e Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Fri, 19 Aug 2011 15:47:11 +0200 Subject: NFC: Reserve tx head and tail room We can have the NFC core layer allocating the tx head and tail room for the drivers and avoid 1 or more SKBs copy on write on the Tx path. Signed-off-by: Samuel Ortiz Signed-off-by: John W. Linville --- include/linux/nfc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfc.h b/include/linux/nfc.h index 330a4c5db588..c525e0b5876b 100644 --- a/include/linux/nfc.h +++ b/include/linux/nfc.h @@ -123,4 +123,6 @@ struct sockaddr_nfc { #define NFC_SOCKPROTO_RAW 0 #define NFC_SOCKPROTO_MAX 1 +#define NFC_HEADER_SIZE 1 + #endif /*__LINUX_NFC_H */ -- cgit v1.2.2 From 9a234349de01de3437784c0ef03d95353f055fae Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 24 Aug 2011 15:25:49 -0700 Subject: Revert "tty: serial8250: add helpers for the DesignWare 8250" This reverts commit 6b1a98d1c4851235d9b6764b3f7b7db7909fc760. It causes a build error that needs to be resolved differently. Cc: Alan Cox Cc: Arnd Bergmann Cc: Jamie Iles Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 09e2dbcd7ca3..1f05bbeac01e 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -86,13 +86,5 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir); extern void serial8250_set_isa_configurator(void (*v) (int port, struct uart_port *up, unsigned short *capabilities)); -#ifndef SERIAL_8250_DW -extern int serial8250_use_designware_io(struct uart_port *up); -#else -static inline int serial8250_use_designware_io(struct uart_port *up) -{ - return -EIO; -} -#endif #endif -- cgit v1.2.2 From 83cac9f3b45ba8e99c5305be42c67f1c83adf0aa Mon Sep 17 00:00:00 2001 From: Bernhard Roth Date: Wed, 24 Aug 2011 09:48:23 +0200 Subject: atmel_serial: RS485: receiving enabled when sending data By default the atmel_serial driver in RS485 mode disables receiving data until all data in the send buffer has been sent. This flag allows to receive data even whilst sending data. Signed-off-by: Bernhard Roth Signed-off-by: Claudio Scordino Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serial.h b/include/linux/serial.h index ef914061511e..97ff8e27a6cc 100644 --- a/include/linux/serial.h +++ b/include/linux/serial.h @@ -211,6 +211,7 @@ struct serial_rs485 { #define SER_RS485_RTS_ON_SEND (1 << 1) #define SER_RS485_RTS_AFTER_SEND (1 << 2) #define SER_RS485_RTS_BEFORE_SEND (1 << 3) +#define SER_RS485_RX_DURING_TX (1 << 4) __u32 delay_rts_before_send; /* Milliseconds */ __u32 delay_rts_after_send; /* Milliseconds */ __u32 padding[5]; /* Memory is cheap, new structs -- cgit v1.2.2 From ea2ab69379a941c6f8884e290fdd28c93936a778 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Mon, 22 Aug 2011 23:44:58 +0000 Subject: net: convert core to skb paged frag APIs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Ian Campbell Cc: "David S. Miller" Cc: Eric Dumazet Cc: "Michał Mirosław" Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- include/linux/skbuff.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 7b0e1773f9cd..8d426281259d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1898,12 +1898,12 @@ static inline int skb_add_data(struct sk_buff *skb, } static inline int skb_can_coalesce(struct sk_buff *skb, int i, - struct page *page, int off) + const struct page *page, int off) { if (i) { struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1]; - return page == frag->page && + return page == skb_frag_page(frag) && off == frag->page_offset + frag->size; } return 0; -- cgit v1.2.2 From 0d4691ce112be025019999df5f2a5e00c03f03c2 Mon Sep 17 00:00:00 2001 From: chetan loke Date: Fri, 19 Aug 2011 10:18:15 +0000 Subject: af-packet: Added TPACKET_V3 headers. Added TPACKET_V3 definitions. Signed-off-by: Chetan Loke Signed-off-by: David S. Miller --- include/linux/if_packet.h | 119 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index c1486060f5ed..5926d59c4295 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -61,6 +61,17 @@ struct tpacket_stats { unsigned int tp_drops; }; +struct tpacket_stats_v3 { + unsigned int tp_packets; + unsigned int tp_drops; + unsigned int tp_freeze_q_cnt; +}; + +union tpacket_stats_u { + struct tpacket_stats stats1; + struct tpacket_stats_v3 stats3; +}; + struct tpacket_auxdata { __u32 tp_status; __u32 tp_len; @@ -78,6 +89,7 @@ struct tpacket_auxdata { #define TP_STATUS_LOSING 0x4 #define TP_STATUS_CSUMNOTREADY 0x8 #define TP_STATUS_VLAN_VALID 0x10 /* auxdata has valid tp_vlan_tci */ +#define TP_STATUS_BLK_TMO 0x20 /* Tx ring - header status */ #define TP_STATUS_AVAILABLE 0x0 @@ -85,6 +97,9 @@ struct tpacket_auxdata { #define TP_STATUS_SENDING 0x2 #define TP_STATUS_WRONG_FORMAT 0x4 +/* Rx ring - feature request bits */ +#define TP_FT_REQ_FILL_RXHASH 0x1 + struct tpacket_hdr { unsigned long tp_status; unsigned int tp_len; @@ -111,11 +126,100 @@ struct tpacket2_hdr { __u16 tp_padding; }; +struct hdr_variant1 { + __u32 tp_rxhash; + __u32 tp_vlan_tci; +}; + +struct tpacket3_hdr { + __u32 tp_next_offset; + __u32 tp_sec; + __u32 tp_nsec; + __u32 tp_snaplen; + __u32 tp_len; + __u32 tp_status; + __u16 tp_mac; + __u16 tp_net; + /* pkt_hdr variants */ + union { + struct hdr_variant1 hv1; + }; +}; + +struct bd_ts { + unsigned int ts_sec; + union { + unsigned int ts_usec; + unsigned int ts_nsec; + }; +}; + +struct hdr_v1 { + __u32 block_status; + __u32 num_pkts; + __u32 offset_to_first_pkt; + + /* Number of valid bytes (including padding) + * blk_len <= tp_block_size + */ + __u32 blk_len; + + /* + * Quite a few uses of sequence number: + * 1. Make sure cache flush etc worked. + * Well, one can argue - why not use the increasing ts below? + * But look at 2. below first. + * 2. When you pass around blocks to other user space decoders, + * you can see which blk[s] is[are] outstanding etc. + * 3. Validate kernel code. + */ + aligned_u64 seq_num; + + /* + * ts_last_pkt: + * + * Case 1. Block has 'N'(N >=1) packets and TMO'd(timed out) + * ts_last_pkt == 'time-stamp of last packet' and NOT the + * time when the timer fired and the block was closed. + * By providing the ts of the last packet we can absolutely + * guarantee that time-stamp wise, the first packet in the + * next block will never precede the last packet of the + * previous block. + * Case 2. Block has zero packets and TMO'd + * ts_last_pkt = time when the timer fired and the block + * was closed. + * Case 3. Block has 'N' packets and NO TMO. + * ts_last_pkt = time-stamp of the last pkt in the block. + * + * ts_first_pkt: + * Is always the time-stamp when the block was opened. + * Case a) ZERO packets + * No packets to deal with but atleast you know the + * time-interval of this block. + * Case b) Non-zero packets + * Use the ts of the first packet in the block. + * + */ + struct bd_ts ts_first_pkt, ts_last_pkt; +}; + +union bd_header_u { + struct hdr_v1 bh1; +}; + +struct block_desc { + __u32 version; + __u32 offset_to_priv; + union bd_header_u hdr; +}; + #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) +#define TPACKET3_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket3_hdr)) + sizeof(struct sockaddr_ll)) enum tpacket_versions { TPACKET_V1, TPACKET_V2, + TPACKET_V3 }; /* @@ -138,6 +242,21 @@ struct tpacket_req { unsigned int tp_frame_nr; /* Total number of frames */ }; +struct tpacket_req3 { + unsigned int tp_block_size; /* Minimal size of contiguous block */ + unsigned int tp_block_nr; /* Number of blocks */ + unsigned int tp_frame_size; /* Size of frame */ + unsigned int tp_frame_nr; /* Total number of frames */ + unsigned int tp_retire_blk_tov; /* timeout in msecs */ + unsigned int tp_sizeof_priv; /* offset to private data area */ + unsigned int tp_feature_req_word; +}; + +union tpacket_req_u { + struct tpacket_req req; + struct tpacket_req3 req3; +}; + struct packet_mreq { int mr_ifindex; unsigned short mr_type; -- cgit v1.2.2 From a262f0cdf1f2916ea918dc329492abb5323d9a6c Mon Sep 17 00:00:00 2001 From: Nandita Dukkipati Date: Sun, 21 Aug 2011 20:21:57 +0000 Subject: Proportional Rate Reduction for TCP. This patch implements Proportional Rate Reduction (PRR) for TCP. PRR is an algorithm that determines TCP's sending rate in fast recovery. PRR avoids excessive window reductions and aims for the actual congestion window size at the end of recovery to be as close as possible to the window determined by the congestion control algorithm. PRR also improves accuracy of the amount of data sent during loss recovery. The patch implements the recommended flavor of PRR called PRR-SSRB (Proportional rate reduction with slow start reduction bound) and replaces the existing rate halving algorithm. PRR improves upon the existing Linux fast recovery under a number of conditions including: 1) burst losses where the losses implicitly reduce the amount of outstanding data (pipe) below the ssthresh value selected by the congestion control algorithm and, 2) losses near the end of short flows where application runs out of data to send. As an example, with the existing rate halving implementation a single loss event can cause a connection carrying short Web transactions to go into the slow start mode after the recovery. This is because during recovery Linux pulls the congestion window down to packets_in_flight+1 on every ACK. A short Web response often runs out of new data to send and its pipe reduces to zero by the end of recovery when all its packets are drained from the network. Subsequent HTTP responses using the same connection will have to slow start to raise cwnd to ssthresh. PRR on the other hand aims for the cwnd to be as close as possible to ssthresh by the end of recovery. A description of PRR and a discussion of its performance can be found at the following links: - IETF Draft: http://tools.ietf.org/html/draft-mathis-tcpm-proportional-rate-reduction-01 - IETF Slides: http://www.ietf.org/proceedings/80/slides/tcpm-6.pdf http://tools.ietf.org/agenda/81/slides/tcpm-2.pdf - Paper to appear in Internet Measurements Conference (IMC) 2011: Improving TCP Loss Recovery Nandita Dukkipati, Matt Mathis, Yuchung Cheng Signed-off-by: Nandita Dukkipati Signed-off-by: David S. Miller --- include/linux/tcp.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 531ede8006d9..6b63b310af36 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -379,6 +379,10 @@ struct tcp_sock { u32 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */ u32 snd_cwnd_used; u32 snd_cwnd_stamp; + u32 prior_cwnd; /* Congestion window at start of Recovery. */ + u32 prr_delivered; /* Number of newly delivered packets to + * receiver in Recovery. */ + u32 prr_out; /* Total number of pkts sent during Recovery. */ u32 rcv_wnd; /* Current receiver window */ u32 write_seq; /* Tail(+1) of data held in tcp send buffer */ -- cgit v1.2.2 From c4bb3160c8823d3a1e581d7e05fb8b343097e7c8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 8 Aug 2011 23:43:04 +0200 Subject: PM / Domains: Implement subdomain counters as atomic fields Currently, pm_genpd_poweron() and pm_genpd_poweroff() need to take the parent PM domain's lock in order to modify the parent's counter of active subdomains in a nonracy way. This causes the locking to be considerably complex and in fact is not necessary, because the subdomain counters may be implemented as atomic fields and they won't have to be modified under a lock. Replace the unsigned in sd_count field in struct generic_pm_domain by an atomic_t one and modify the code in drivers/base/power/domain.c to take this change into account. This patch doesn't change the locking yet, that is going to be done in a separate subsequent patch. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_domain.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index f9ec1736a116..81c5782d90a3 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -33,7 +33,7 @@ struct generic_pm_domain { struct dev_power_governor *gov; struct work_struct power_off_work; unsigned int in_progress; /* Number of devices being suspended now */ - unsigned int sd_count; /* Number of subdomains with power "on" */ + atomic_t sd_count; /* Number of subdomains with power "on" */ enum gpd_status status; /* Current state of the domain */ wait_queue_head_t status_wait_queue; struct task_struct *poweroff_task; /* Powering off task */ -- cgit v1.2.2 From 3f241775c30365c33a0d2f6d40f4cf12470f48c6 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 8 Aug 2011 23:43:29 +0200 Subject: PM / Domains: Add "wait for parent" status for generic PM domains The next patch will make it possible for a generic PM domain to have multiple parents (i.e. multiple PM domains it depends on). To prepare for that change it is necessary to change pm_genpd_poweron() so that it doesn't jump to the start label after running itself recursively for the parent domain. For this purpose, introduce a new PM domain status value GPD_STATE_WAIT_PARENT that will be set by pm_genpd_poweron() before calling itself recursively for the parent domain and modify the code in drivers/base/power/domain.c so that the GPD_STATE_WAIT_PARENT status is guaranteed to be preserved during the execution of pm_genpd_poweron() for the parent. This change also causes pm_genpd_add_subdomain() and pm_genpd_remove_subdomain() to wait for started pm_genpd_poweron() to complete and allows pm_genpd_runtime_resume() to avoid dropping the lock after powering on the PM domain. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_domain.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 81c5782d90a3..97e3f8eb4978 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -13,6 +13,7 @@ enum gpd_status { GPD_STATE_ACTIVE = 0, /* PM domain is active */ + GPD_STATE_WAIT_PARENT, /* PM domain's parent is being waited for */ GPD_STATE_BUSY, /* Something is happening to the PM domain */ GPD_STATE_REPEAT, /* Power off in progress, to be repeated */ GPD_STATE_POWER_OFF, /* PM domain is off */ -- cgit v1.2.2 From 5063ce1571b73865cbdcd92db002e85809750c97 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 8 Aug 2011 23:43:40 +0200 Subject: PM / Domains: Allow generic PM domains to have multiple masters Currently, for a given generic PM domain there may be only one parent domain (i.e. a PM domain it depends on). However, there is at least one real-life case in which there should be two parents (masters) for one PM domain (the A3RV domain on SH7372 turns out to depend on the A4LC domain and it depends on the A4R domain and the same time). For this reason, allow a PM domain to have multiple parents (masters) by introducing objects representing links between PM domains. The (logical) links between PM domains represent relationships in which one domain is a master (i.e. it is depended on) and another domain is a slave (i.e. it depends on the master) with the rule that the slave cannot be powered on if the master is not powered on and the master cannot be powered off if the slave is not powered off. Each struct generic_pm_domain object representing a PM domain has two lists of links, a list of links in which it is a master and a list of links in which it is a slave. The first of these lists replaces the list of subdomains and the second one is used in place of the parent pointer. Each link is represented by struct gpd_link object containing pointers to the master and the slave and two struct list_head members allowing it to hook into two lists (the master's list of "master" links and the slave's list of "slave" links). This allows the code to get to the link from each side (either from the master or from the slave) and follow it in each direction. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_domain.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 97e3f8eb4978..5f5154d79253 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -26,9 +26,8 @@ struct dev_power_governor { struct generic_pm_domain { struct dev_pm_domain domain; /* PM domain operations */ struct list_head gpd_list_node; /* Node in the global PM domains list */ - struct list_head sd_node; /* Node in the parent's subdomain list */ - struct generic_pm_domain *parent; /* Parent PM domain */ - struct list_head sd_list; /* List of dubdomains */ + struct list_head master_links; /* Links with PM domain as a master */ + struct list_head slave_links; /* Links with PM domain as a slave */ struct list_head dev_list; /* List of devices */ struct mutex lock; struct dev_power_governor *gov; @@ -55,6 +54,13 @@ static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd) return container_of(pd, struct generic_pm_domain, domain); } +struct gpd_link { + struct generic_pm_domain *master; + struct list_head master_node; + struct generic_pm_domain *slave; + struct list_head slave_node; +}; + struct dev_list_entry { struct list_head node; struct device *dev; -- cgit v1.2.2 From 17877eb5a900f32bb5827a7b2109b6c9adff5fc3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 8 Aug 2011 23:43:50 +0200 Subject: PM / Domains: Rename GPD_STATE_WAIT_PARENT to GPD_STATE_WAIT_MASTER Since it is now possible for a PM domain to have multiple masters instead of one parent, rename the "wait for parent" status to reflect the new situation. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_domain.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 5f5154d79253..bf679f59f9a8 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -13,7 +13,7 @@ enum gpd_status { GPD_STATE_ACTIVE = 0, /* PM domain is active */ - GPD_STATE_WAIT_PARENT, /* PM domain's parent is being waited for */ + GPD_STATE_WAIT_MASTER, /* PM domain's master is being waited for */ GPD_STATE_BUSY, /* Something is happening to the PM domain */ GPD_STATE_REPEAT, /* Power off in progress, to be repeated */ GPD_STATE_POWER_OFF, /* PM domain is off */ -- cgit v1.2.2 From 5c095a0e0d600d5a5a4207eaadabd18db46395ce Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 25 Aug 2011 15:33:50 +0200 Subject: PM: Introduce struct pm_subsys_data Introduce struct pm_subsys_data that may be subclassed by subsystems to store subsystem-specific information related to the device. Move the clock management fields accessed through the power.subsys_data pointer in struct device to the new strucutre. Signed-off-by: Rafael J. Wysocki --- include/linux/device.h | 5 +++++ include/linux/pm.h | 9 ++++++++- include/linux/pm_runtime.h | 8 ++++++-- 3 files changed, 19 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index c20dfbfc49b4..5d200ed0071a 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -636,6 +636,11 @@ static inline void set_dev_node(struct device *dev, int node) } #endif +static inline struct pm_subsys_data *dev_to_psd(struct device *dev) +{ + return dev ? dev->power.subsys_data : NULL; +} + static inline unsigned int dev_get_uevent_suppress(const struct device *dev) { return dev->kobj.uevent_suppress; diff --git a/include/linux/pm.h b/include/linux/pm.h index f7c84c9abd30..bf5ee37388d4 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -421,6 +421,13 @@ enum rpm_request { struct wakeup_source; +struct pm_subsys_data { + spinlock_t lock; +#ifdef CONFIG_PM_CLK + struct list_head clock_list; +#endif +}; + struct dev_pm_info { pm_message_t power_state; unsigned int can_wakeup:1; @@ -462,7 +469,7 @@ struct dev_pm_info { unsigned long suspended_jiffies; unsigned long accounting_timestamp; #endif - void *subsys_data; /* Owned by the subsystem. */ + struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ }; extern void update_pm_runtime_accounting(struct device *dev); diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index daac05d751b2..6b90630e3c98 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -258,14 +258,18 @@ struct pm_clk_notifier_block { }; #ifdef CONFIG_PM_CLK -extern int pm_clk_init(struct device *dev); +extern void pm_clk_init(struct device *dev); +extern int pm_clk_create(struct device *dev); extern void pm_clk_destroy(struct device *dev); extern int pm_clk_add(struct device *dev, const char *con_id); extern void pm_clk_remove(struct device *dev, const char *con_id); extern int pm_clk_suspend(struct device *dev); extern int pm_clk_resume(struct device *dev); #else -static inline int pm_clk_init(struct device *dev) +static inline void pm_clk_init(struct device *dev) +{ +} +static inline int pm_clk_create(struct device *dev) { return -EINVAL; } -- cgit v1.2.2 From ef27bed1870dbd5fd363ff5ec51eebd5a695e277 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 25 Aug 2011 15:34:01 +0200 Subject: PM: Reference counting of power.subsys_data Since the power.subsys_data device field will be used by multiple filesystems, introduce a reference counting mechanism for it to avoid freeing it prematurely or changing its value at a wrong time. Make the PM clocks management code that currently is the only user of power.subsys_data use the new reference counting. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index bf5ee37388d4..c6b5a0a41ab3 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -423,6 +423,7 @@ struct wakeup_source; struct pm_subsys_data { spinlock_t lock; + unsigned int refcount; #ifdef CONFIG_PM_CLK struct list_head clock_list; #endif @@ -473,6 +474,8 @@ struct dev_pm_info { }; extern void update_pm_runtime_accounting(struct device *dev); +extern int dev_pm_get_subsys_data(struct device *dev); +extern int dev_pm_put_subsys_data(struct device *dev); /* * Power domains provide callbacks that are executed during system suspend, -- cgit v1.2.2 From 4605ab653c1f9d7cc2dda8033de215c9cee325f4 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 25 Aug 2011 15:34:12 +0200 Subject: PM / Domains: Use power.sybsys_data to reduce overhead Currently pm_genpd_runtime_resume() has to walk the list of devices from the device's PM domain to find the corresponding device list object containing the need_restore field to check if the driver's .runtime_resume() callback should be executed for the device. This is suboptimal and can be simplified by using power.sybsys_data to store device information used by the generic PM domains code. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 9 +++++++++ include/linux/pm_domain.h | 6 ------ include/linux/pm_runtime.h | 10 ++++++++++ 3 files changed, 19 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index c6b5a0a41ab3..ed10f24d5259 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -421,12 +421,21 @@ enum rpm_request { struct wakeup_source; +struct pm_domain_data { + struct list_head list_node; + struct device *dev; + bool need_restore; +}; + struct pm_subsys_data { spinlock_t lock; unsigned int refcount; #ifdef CONFIG_PM_CLK struct list_head clock_list; #endif +#ifdef CONFIG_PM_GENERIC_DOMAINS + struct pm_domain_data domain_data; +#endif }; struct dev_pm_info { diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index bf679f59f9a8..5cce46c2d926 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -61,12 +61,6 @@ struct gpd_link { struct list_head slave_node; }; -struct dev_list_entry { - struct list_head node; - struct device *dev; - bool need_restore; -}; - #ifdef CONFIG_PM_GENERIC_DOMAINS extern int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev); diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 6b90630e3c98..a5a41a850efb 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -258,6 +258,12 @@ struct pm_clk_notifier_block { }; #ifdef CONFIG_PM_CLK +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return dev && dev->power.subsys_data + && list_empty(&dev->power.subsys_data->clock_list); +} + extern void pm_clk_init(struct device *dev); extern int pm_clk_create(struct device *dev); extern void pm_clk_destroy(struct device *dev); @@ -266,6 +272,10 @@ extern void pm_clk_remove(struct device *dev, const char *con_id); extern int pm_clk_suspend(struct device *dev); extern int pm_clk_resume(struct device *dev); #else +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return true; +} static inline void pm_clk_init(struct device *dev) { } -- cgit v1.2.2 From b5e8d269d814763d597ccc0108d1fa6639ad35a1 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 25 Aug 2011 15:34:19 +0200 Subject: PM: Move clock-related definitions and headers to separate file Since the PM clock management code in drivers/base/power/clock_ops.c is used for both runtime PM and system suspend/hibernation, the definitions of data structures and headers related to it should not be located in include/linux/pm_rumtime.h. Move them to a separate header file. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_clock.h | 71 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/pm_runtime.h | 56 ------------------------------------ 2 files changed, 71 insertions(+), 56 deletions(-) create mode 100644 include/linux/pm_clock.h (limited to 'include/linux') diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h new file mode 100644 index 000000000000..8348866e7b05 --- /dev/null +++ b/include/linux/pm_clock.h @@ -0,0 +1,71 @@ +/* + * pm_clock.h - Definitions and headers related to device clocks. + * + * Copyright (C) 2011 Rafael J. Wysocki , Renesas Electronics Corp. + * + * This file is released under the GPLv2. + */ + +#ifndef _LINUX_PM_CLOCK_H +#define _LINUX_PM_CLOCK_H + +#include +#include + +struct pm_clk_notifier_block { + struct notifier_block nb; + struct dev_pm_domain *pm_domain; + char *con_ids[]; +}; + +#ifdef CONFIG_PM_CLK +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return dev && dev->power.subsys_data + && list_empty(&dev->power.subsys_data->clock_list); +} + +extern void pm_clk_init(struct device *dev); +extern int pm_clk_create(struct device *dev); +extern void pm_clk_destroy(struct device *dev); +extern int pm_clk_add(struct device *dev, const char *con_id); +extern void pm_clk_remove(struct device *dev, const char *con_id); +extern int pm_clk_suspend(struct device *dev); +extern int pm_clk_resume(struct device *dev); +#else +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return true; +} +static inline void pm_clk_init(struct device *dev) +{ +} +static inline int pm_clk_create(struct device *dev) +{ + return -EINVAL; +} +static inline void pm_clk_destroy(struct device *dev) +{ +} +static inline int pm_clk_add(struct device *dev, const char *con_id) +{ + return -EINVAL; +} +static inline void pm_clk_remove(struct device *dev, const char *con_id) +{ +} +#define pm_clk_suspend NULL +#define pm_clk_resume NULL +#endif + +#ifdef CONFIG_HAVE_CLK +extern void pm_clk_add_notifier(struct bus_type *bus, + struct pm_clk_notifier_block *clknb); +#else +static inline void pm_clk_add_notifier(struct bus_type *bus, + struct pm_clk_notifier_block *clknb) +{ +} +#endif + +#endif diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index a5a41a850efb..70b284024d9e 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -251,60 +251,4 @@ static inline void pm_runtime_dont_use_autosuspend(struct device *dev) __pm_runtime_use_autosuspend(dev, false); } -struct pm_clk_notifier_block { - struct notifier_block nb; - struct dev_pm_domain *pm_domain; - char *con_ids[]; -}; - -#ifdef CONFIG_PM_CLK -static inline bool pm_clk_no_clocks(struct device *dev) -{ - return dev && dev->power.subsys_data - && list_empty(&dev->power.subsys_data->clock_list); -} - -extern void pm_clk_init(struct device *dev); -extern int pm_clk_create(struct device *dev); -extern void pm_clk_destroy(struct device *dev); -extern int pm_clk_add(struct device *dev, const char *con_id); -extern void pm_clk_remove(struct device *dev, const char *con_id); -extern int pm_clk_suspend(struct device *dev); -extern int pm_clk_resume(struct device *dev); -#else -static inline bool pm_clk_no_clocks(struct device *dev) -{ - return true; -} -static inline void pm_clk_init(struct device *dev) -{ -} -static inline int pm_clk_create(struct device *dev) -{ - return -EINVAL; -} -static inline void pm_clk_destroy(struct device *dev) -{ -} -static inline int pm_clk_add(struct device *dev, const char *con_id) -{ - return -EINVAL; -} -static inline void pm_clk_remove(struct device *dev, const char *con_id) -{ -} -#define pm_clk_suspend NULL -#define pm_clk_resume NULL -#endif - -#ifdef CONFIG_HAVE_CLK -extern void pm_clk_add_notifier(struct bus_type *bus, - struct pm_clk_notifier_block *clknb); -#else -static inline void pm_clk_add_notifier(struct bus_type *bus, - struct pm_clk_notifier_block *clknb) -{ -} -#endif - #endif -- cgit v1.2.2 From e8db0be1245de16a6cc6365506abc392c3c212d4 Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:03 +0200 Subject: PM QoS: Move and rename the implementation files The PM QoS implementation files are better named kernel/power/qos.c and include/linux/pm_qos.h. The PM QoS support is compiled under the CONFIG_PM option. Signed-off-by: Jean Pihet Acked-by: markgross Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/netdevice.h | 2 +- include/linux/pm_qos.h | 61 +++++++++++++++++++++++++++++++++++++++++++ include/linux/pm_qos_params.h | 38 --------------------------- 3 files changed, 62 insertions(+), 39 deletions(-) create mode 100644 include/linux/pm_qos.h delete mode 100644 include/linux/pm_qos_params.h (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ddee79bb8f15..f72ac6b972b7 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -31,7 +31,7 @@ #include #ifdef __KERNEL__ -#include +#include #include #include #include diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h new file mode 100644 index 000000000000..7ba675413b08 --- /dev/null +++ b/include/linux/pm_qos.h @@ -0,0 +1,61 @@ +#ifndef _LINUX_PM_QOS_H +#define _LINUX_PM_QOS_H +/* interface for the pm_qos_power infrastructure of the linux kernel. + * + * Mark Gross + */ +#include +#include +#include + +#define PM_QOS_RESERVED 0 +#define PM_QOS_CPU_DMA_LATENCY 1 +#define PM_QOS_NETWORK_LATENCY 2 +#define PM_QOS_NETWORK_THROUGHPUT 3 + +#define PM_QOS_NUM_CLASSES 4 +#define PM_QOS_DEFAULT_VALUE -1 + +#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) +#define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) +#define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 + +struct pm_qos_request_list { + struct plist_node list; + int pm_qos_class; +}; + +#ifdef CONFIG_PM +void pm_qos_add_request(struct pm_qos_request_list *l, + int pm_qos_class, s32 value); +void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req, + s32 new_value); +void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req); + +int pm_qos_request(int pm_qos_class); +int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); +int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); +int pm_qos_request_active(struct pm_qos_request_list *req); +#else +static inline void pm_qos_add_request(struct pm_qos_request_list *l, + int pm_qos_class, s32 value) + { return; } +static inline void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req, + s32 new_value) + { return; } +static inline void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req) + { return; } + +static inline int pm_qos_request(int pm_qos_class) + { return 0; } +static inline int pm_qos_add_notifier(int pm_qos_class, + struct notifier_block *notifier) + { return 0; } +static inline int pm_qos_remove_notifier(int pm_qos_class, + struct notifier_block *notifier) + { return 0; } +static inline int pm_qos_request_active(struct pm_qos_request_list *req) + { return 0; } +#endif + +#endif diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h deleted file mode 100644 index a7d87f911cab..000000000000 --- a/include/linux/pm_qos_params.h +++ /dev/null @@ -1,38 +0,0 @@ -#ifndef _LINUX_PM_QOS_PARAMS_H -#define _LINUX_PM_QOS_PARAMS_H -/* interface for the pm_qos_power infrastructure of the linux kernel. - * - * Mark Gross - */ -#include -#include -#include - -#define PM_QOS_RESERVED 0 -#define PM_QOS_CPU_DMA_LATENCY 1 -#define PM_QOS_NETWORK_LATENCY 2 -#define PM_QOS_NETWORK_THROUGHPUT 3 - -#define PM_QOS_NUM_CLASSES 4 -#define PM_QOS_DEFAULT_VALUE -1 - -#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) -#define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) -#define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 - -struct pm_qos_request_list { - struct plist_node list; - int pm_qos_class; -}; - -void pm_qos_add_request(struct pm_qos_request_list *l, int pm_qos_class, s32 value); -void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req, - s32 new_value); -void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req); - -int pm_qos_request(int pm_qos_class); -int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); -int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); -int pm_qos_request_active(struct pm_qos_request_list *req); - -#endif -- cgit v1.2.2 From cc74998618a66d34651c784dd02412614c3e81cc Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:12 +0200 Subject: PM QoS: Minor clean-ups - Misc fixes to improve code readability: * rename struct pm_qos_request_list to struct pm_qos_request, * rename pm_qos_req parameter to req in internal code, consistenly use req in the API parameters, * update the in-kernel API callers to the new parameters names, * rename of fields names (requests, list, node, constraints) Signed-off-by: Jean Pihet Acked-by: markgross Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/netdevice.h | 2 +- include/linux/pm_qos.h | 22 +++++++++++----------- 2 files changed, 12 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f72ac6b972b7..f38ab5b7e768 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -964,7 +964,7 @@ struct net_device { */ char name[IFNAMSIZ]; - struct pm_qos_request_list pm_qos_req; + struct pm_qos_request pm_qos_req; /* device name hash chain */ struct hlist_node name_hlist; diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 7ba675413b08..6b0968f8bc6e 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -20,30 +20,30 @@ #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 -struct pm_qos_request_list { - struct plist_node list; +struct pm_qos_request { + struct plist_node node; int pm_qos_class; }; #ifdef CONFIG_PM -void pm_qos_add_request(struct pm_qos_request_list *l, - int pm_qos_class, s32 value); -void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req, +void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, + s32 value); +void pm_qos_update_request(struct pm_qos_request *req, s32 new_value); -void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req); +void pm_qos_remove_request(struct pm_qos_request *req); int pm_qos_request(int pm_qos_class); int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); -int pm_qos_request_active(struct pm_qos_request_list *req); +int pm_qos_request_active(struct pm_qos_request *req); #else -static inline void pm_qos_add_request(struct pm_qos_request_list *l, +static inline void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value) { return; } -static inline void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req, +static inline void pm_qos_update_request(struct pm_qos_request *req, s32 new_value) { return; } -static inline void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req) +static inline void pm_qos_remove_request(struct pm_qos_request *req) { return; } static inline int pm_qos_request(int pm_qos_class) @@ -54,7 +54,7 @@ static inline int pm_qos_add_notifier(int pm_qos_class, static inline int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier) { return 0; } -static inline int pm_qos_request_active(struct pm_qos_request_list *req) +static inline int pm_qos_request_active(struct pm_qos_request *req) { return 0; } #endif -- cgit v1.2.2 From 4e1779baaa542c83b459b0a56585e0c1a04c7782 Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:27 +0200 Subject: PM QoS: Reorganize data structs In preparation for the per-device constratins support, re-organize the data strctures: - add a struct pm_qos_constraints which contains the constraints related data - update struct pm_qos_object contents to the PM QoS internal object data. Add a pointer to struct pm_qos_constraints - update the internal code to use the new data structs. Signed-off-by: Jean Pihet Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/pm_qos.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 6b0968f8bc6e..97723113ae92 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -25,6 +25,25 @@ struct pm_qos_request { int pm_qos_class; }; +enum pm_qos_type { + PM_QOS_UNITIALIZED, + PM_QOS_MAX, /* return the largest value */ + PM_QOS_MIN /* return the smallest value */ +}; + +/* + * Note: The lockless read path depends on the CPU accessing + * target_value atomically. Atomic access is only guaranteed on all CPU + * types linux supports for 32 bit quantites + */ +struct pm_qos_constraints { + struct plist_head list; + s32 target_value; /* Do not change to 64 bit */ + s32 default_value; + enum pm_qos_type type; + struct blocking_notifier_head *notifiers; +}; + #ifdef CONFIG_PM void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value); -- cgit v1.2.2 From abe98ec2d86279fe821c9051003a0abc43444f15 Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:34 +0200 Subject: PM QoS: Generalize and export constraints management code In preparation for the per-device constratins support: - rename update_target to pm_qos_update_target - generalize and export pm_qos_update_target for usage by the upcoming per-device latency constraints framework: * operate on struct pm_qos_constraints for constraints management, * introduce an 'action' parameter for constraints add/update/remove, * the return value indicates if the aggregated constraint value has changed, - update the internal code to operate on struct pm_qos_constraints - add a NULL pointer check in the API functions Signed-off-by: Jean Pihet Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/pm_qos.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 97723113ae92..84aa15089896 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -44,7 +44,16 @@ struct pm_qos_constraints { struct blocking_notifier_head *notifiers; }; +/* Action requested to pm_qos_update_target */ +enum pm_qos_req_action { + PM_QOS_ADD_REQ, /* Add a new request */ + PM_QOS_UPDATE_REQ, /* Update an existing request */ + PM_QOS_REMOVE_REQ /* Remove an existing request */ +}; + #ifdef CONFIG_PM +int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, + enum pm_qos_req_action action, int value); void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value); void pm_qos_update_request(struct pm_qos_request *req, @@ -56,6 +65,11 @@ int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_request_active(struct pm_qos_request *req); #else +static inline int pm_qos_update_target(struct pm_qos_constraints *c, + struct plist_node *node, + enum pm_qos_req_action action, + int value) + { return 0; } static inline void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value) { return; } -- cgit v1.2.2 From 91ff4cb803df6de9114351b9f2f0f39f397ee03e Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:41 +0200 Subject: PM QoS: Implement per-device PM QoS constraints Implement the per-device PM QoS constraints by creating a device PM QoS API, which calls the PM QoS constraints management core code. The per-device latency constraints data strctures are stored in the device dev_pm_info struct. The device PM code calls the init and destroy of the per-device constraints data struct in order to support the dynamic insertion and removal of the devices in the system. To minimize the data usage by the per-device constraints, the data struct is only allocated at the first call to dev_pm_qos_add_request. The data is later free'd when the device is removed from the system. A global mutex protects the constraints users from the data being allocated and free'd. Signed-off-by: Jean Pihet Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 9 +++++++++ include/linux/pm_qos.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index ed10f24d5259..d78187e9ca99 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -419,6 +419,13 @@ enum rpm_request { RPM_REQ_RESUME, }; +/* Per-device PM QoS constraints data struct state */ +enum dev_pm_qos_state { + DEV_PM_QOS_NO_DEVICE, /* No device present */ + DEV_PM_QOS_DEVICE_PRESENT, /* Device present, data not allocated */ + DEV_PM_QOS_ALLOCATED, /* Device present, data allocated */ +}; + struct wakeup_source; struct pm_domain_data { @@ -480,6 +487,8 @@ struct dev_pm_info { unsigned long accounting_timestamp; #endif struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ + struct pm_qos_constraints *constraints; + enum dev_pm_qos_state constraints_state; }; extern void update_pm_runtime_accounting(struct device *dev); diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 84aa15089896..f75f74dd9b90 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -19,12 +19,18 @@ #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 +#define PM_QOS_DEV_LAT_DEFAULT_VALUE 0 struct pm_qos_request { struct plist_node node; int pm_qos_class; }; +struct dev_pm_qos_request { + struct plist_node node; + struct device *dev; +}; + enum pm_qos_type { PM_QOS_UNITIALIZED, PM_QOS_MAX, /* return the largest value */ @@ -51,6 +57,11 @@ enum pm_qos_req_action { PM_QOS_REMOVE_REQ /* Remove an existing request */ }; +static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req) +{ + return req->dev != 0; +} + #ifdef CONFIG_PM int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, enum pm_qos_req_action action, int value); @@ -64,6 +75,17 @@ int pm_qos_request(int pm_qos_class); int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_request_active(struct pm_qos_request *req); + +int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, + s32 value); +int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); +int dev_pm_qos_remove_request(struct dev_pm_qos_request *req); +int dev_pm_qos_add_notifier(struct device *dev, + struct notifier_block *notifier); +int dev_pm_qos_remove_notifier(struct device *dev, + struct notifier_block *notifier); +void dev_pm_qos_constraints_init(struct device *dev); +void dev_pm_qos_constraints_destroy(struct device *dev); #else static inline int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, @@ -89,6 +111,26 @@ static inline int pm_qos_remove_notifier(int pm_qos_class, { return 0; } static inline int pm_qos_request_active(struct pm_qos_request *req) { return 0; } + +static inline int dev_pm_qos_add_request(struct device *dev, + struct dev_pm_qos_request *req, + s32 value) + { return 0; } +static inline int dev_pm_qos_update_request(struct dev_pm_qos_request *req, + s32 new_value) + { return 0; } +static inline int dev_pm_qos_remove_request(struct dev_pm_qos_request *req) + { return 0; } +static inline int dev_pm_qos_add_notifier(struct device *dev, + struct notifier_block *notifier) + { return 0; } +static inline int dev_pm_qos_remove_notifier(struct device *dev, + struct notifier_block *notifier) + { return 0; } +static inline void dev_pm_qos_constraints_init(struct device *dev) + { return; } +static inline void dev_pm_qos_constraints_destroy(struct device *dev) + { return; } #endif #endif -- cgit v1.2.2 From b66213cdb002b08b29603d488c451dfe25e2ca20 Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 25 Aug 2011 15:35:47 +0200 Subject: PM QoS: Add global notification mechanism for device constraints Add a global notification chain that gets called upon changes to the aggregated constraint value for any device. The notification callbacks are passing the full constraint request data in order for the callees to have access to it. The current use is for the platform low-level code to access the target device of the constraint. Signed-off-by: Jean Pihet Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/pm_qos.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index f75f74dd9b90..ca7bd3f98cb4 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -75,6 +75,7 @@ int pm_qos_request(int pm_qos_class); int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_request_active(struct pm_qos_request *req); +s32 pm_qos_read_value(struct pm_qos_constraints *c); int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, s32 value); @@ -84,6 +85,8 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier); int dev_pm_qos_remove_notifier(struct device *dev, struct notifier_block *notifier); +int dev_pm_qos_add_global_notifier(struct notifier_block *notifier); +int dev_pm_qos_remove_global_notifier(struct notifier_block *notifier); void dev_pm_qos_constraints_init(struct device *dev); void dev_pm_qos_constraints_destroy(struct device *dev); #else @@ -111,6 +114,8 @@ static inline int pm_qos_remove_notifier(int pm_qos_class, { return 0; } static inline int pm_qos_request_active(struct pm_qos_request *req) { return 0; } +static inline s32 pm_qos_read_value(struct pm_qos_constraints *c) + { return 0; } static inline int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, @@ -127,6 +132,12 @@ static inline int dev_pm_qos_add_notifier(struct device *dev, static inline int dev_pm_qos_remove_notifier(struct device *dev, struct notifier_block *notifier) { return 0; } +static inline int dev_pm_qos_add_global_notifier( + struct notifier_block *notifier) + { return 0; } +static inline int dev_pm_qos_remove_global_notifier( + struct notifier_block *notifier) + { return 0; } static inline void dev_pm_qos_constraints_init(struct device *dev) { return; } static inline void dev_pm_qos_constraints_destroy(struct device *dev) -- cgit v1.2.2 From 0aa2a221696cc8ea20a4cdca01315d3b6b4ecc4d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 25 Aug 2011 15:37:04 +0200 Subject: PM / Domains: Preliminary support for devices with power.irq_safe set The generic PM domains framework currently doesn't work with devices whose power.irq_safe flag is set, because runtime PM callbacks for such devices are run with interrupts disabled and the callbacks provided by the generic PM domains framework use domain mutexes and may sleep. However, such devices very well may belong to power domains on some systems, so the generic PM domains framework should take them into account. For this reason, modify the generic PM domains framework so that the domain .power_off() and .power_on() callbacks are never executed for a domain containing devices with power.irq_safe set, although the .stop_device() and .start_device() callbacks are still run for them. Additionally, introduce a flag allowing the creator of a struct generic_pm_domain object to indicate that its .stop_device() and .start_device() callbacks may be run in interrupt context (might_sleep_if() triggers if that flag is not set and one of those callbacks is run in interrupt context). Signed-off-by: Rafael J. Wysocki --- include/linux/pm_domain.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 5cce46c2d926..2538d906bcd1 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -42,6 +42,7 @@ struct generic_pm_domain { unsigned int suspended_count; /* System suspend device counter */ unsigned int prepared_count; /* Suspend counter of prepared devices */ bool suspend_power_off; /* Power status before system suspend */ + bool dev_irq_safe; /* Device callbacks are IRQ-safe */ int (*power_off)(struct generic_pm_domain *domain); int (*power_on)(struct generic_pm_domain *domain); int (*start_device)(struct device *dev); -- cgit v1.2.2 From 5a61233073a35a7ae152af77ed80dfc465c38fc7 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 5 Aug 2011 15:32:30 +0530 Subject: dmaengine/amba-pl08x: Complete doc comment for struct pl08x_txd Doc comment for struct pl08x_txd was incomplete. Complete that. Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/amba/pl08x.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index e6e28f37d8ec..cd8f629da58f 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -105,8 +105,16 @@ struct pl08x_phy_chan { /** * struct pl08x_txd - wrapper for struct dma_async_tx_descriptor + * @tx: async tx descriptor + * @node: node for txd list for channels + * @src_addr: src address of txd + * @dst_addr: dst address of txd + * @len: transfer len in bytes + * @direction: direction of transfer * @llis_bus: DMA memory address (physical) start for the LLIs * @llis_va: virtual memory address start for the LLIs + * @cctl: control reg values for current txd + * @ccfg: config reg values for current txd */ struct pl08x_txd { struct dma_async_tx_descriptor tx; -- cgit v1.2.2 From 16a2e7d359b9fc64fb8a6717c0642691b1e60bb7 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 5 Aug 2011 15:32:37 +0530 Subject: dmaengine/amba-pl08x: Get rid of pl08x_pre_boundary() Pl080 Manual says: "Bursts do not cross the 1KB address boundary" We can program the controller to cross 1 KB boundary on a burst and controller can take care of this boundary condition by itself. Following is the discussion with ARM Technical Support Guys (David): [Viresh] Manual says: "Bursts do not cross the 1KB address boundary" What does that actually mean? As, Maximum size transferable with a single LLI is 4095 * 4 =16380 ~ 16KB. So, if we don't have src/dest address aligned to burst size, we can't use this big of an LLI. [David] There is a difference between bursts describing the total data transferred by the DMA controller and AHB bursts. Bursts described by the programmable parameters in the PL080 have no direct connection with the bursts that are seen on the AHB bus. The statement that "Bursts do not cross the 1KB address boundary" in the TRM is referring to AHB bursts, where this limitation is a requirement of the AHB spec. You can still issue bursts within the PL080 that are in excess of 1KB. The PL080 will make sure that its bursts are broken down into legal AHB bursts which will be formatted to ensure that no AHB burst crosses a 1KB boundary. Based on above discussion, this patch removes all code related to 1 KB boundary as we are not required to handle this in driver. Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/amba/pl08x.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index cd8f629da58f..ecd17f581e71 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -77,13 +77,11 @@ struct pl08x_channel_data { * @addr: current address * @maxwidth: the maximum width of a transfer on this bus * @buswidth: the width of this bus in bytes: 1, 2 or 4 - * @fill_bytes: bytes required to fill to the next bus memory boundary */ struct pl08x_bus_data { dma_addr_t addr; u8 maxwidth; u8 buswidth; - size_t fill_bytes; }; /** -- cgit v1.2.2 From 0a2356572b1910cc977f4ccf3c9ee1ecab08327a Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 5 Aug 2011 15:32:42 +0530 Subject: dmaengine/amba-pl08x: Pass flow controller information with slave channel data At least, on SPEAr platforms there is one peripheral, JPEG, which can be flow controller for DMA transfer. Currently DMA controller driver didn't support peripheral flow controller configurations. This patch adds device_fc field in struct pl08x_channel_data, which will be used only for slave transfers and is not used in case of mem2mem transfers. Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/amba/pl08x.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index ecd17f581e71..a22662c93981 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -47,6 +47,9 @@ enum { * @muxval: a number usually used to poke into some mux regiser to * mux in the signal to this channel * @cctl_opt: default options for the channel control register + * @device_fc: Flow Controller Settings for ccfg register. Only valid for slave + * channels. Fill with 'true' if peripheral should be flow controller. Direction + * will be selected at Runtime. * @addr: source/target address in physical memory for this DMA channel, * can be the address of a FIFO register for burst requests for example. * This can be left undefined if the PrimeCell API is used for configuring @@ -65,6 +68,7 @@ struct pl08x_channel_data { int max_signal; u32 muxval; u32 cctl; + bool device_fc; dma_addr_t addr; bool circular_buffer; bool single; -- cgit v1.2.2 From a57a7bf3fc7eff00f07eb9c805774d911a3f2472 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 25 Aug 2011 15:12:06 +0200 Subject: TTY: define tty_wait_until_sent_from_close We need this helper to fix system stalls. The issue is that the rest of the system TTYs wait for us to finish waiting. This wasn't an issue with BKL. BKL used to unlock implicitly. This is based on the Arnd suggestion. Signed-off-by: Jiri Slaby Acked-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 6d5eceb165be..0ad68889fc1a 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -601,6 +601,24 @@ extern long vt_compat_ioctl(struct tty_struct *tty, extern void __lockfunc tty_lock(void) __acquires(tty_lock); extern void __lockfunc tty_unlock(void) __releases(tty_lock); +/* + * this shall be called only from where BTM is held (like close) + * + * We need this to ensure nobody waits for us to finish while we are waiting. + * Without this we were encountering system stalls. + * + * This should be indeed removed with BTM removal later. + * + * Locking: BTM required. Nobody is allowed to hold port->mutex. + */ +static inline void tty_wait_until_sent_from_close(struct tty_struct *tty, + long timeout) +{ + tty_unlock(); /* tty->ops->close holds the BTM, drop it while waiting */ + tty_wait_until_sent(tty, timeout); + tty_lock(); +} + /* * wait_event_interruptible_tty -- wait for a condition with the tty lock held * -- cgit v1.2.2 From 17be18c2b5f5c8acd75e4edf1211abf2cfd60fa5 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 25 Aug 2011 09:48:29 -0700 Subject: Staging: hv: Add struct hv_vmbus_device_id to mod_devicetable.h In preparation for implementing vmbus aliases for auto-loading Hyper-V drivers, define vmbus specific device ID. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/mod_devicetable.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index ae28e93fd072..5a123774c2e6 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -405,6 +405,13 @@ struct virtio_device_id { }; #define VIRTIO_DEV_ANY_ID 0xffffffff +/* + * For Hyper-V devices we use the device guid as the id. + */ +struct hv_vmbus_device_id { + __u8 guid[16]; +}; + /* i2c */ #define I2C_NAME_SIZE 20 -- cgit v1.2.2 From a91befc116f424883602fb7b57b63b5fcfe18719 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 25 Aug 2011 10:25:37 -0700 Subject: Staging: hv: add driver_data to hv_vmbus_device_id This is going to be needed by some drivers that handle more than one device, like all other bus types do, so prepare for that in advance before the user/kernel api is used. Cc: K. Y. Srinivasan Cc: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/mod_devicetable.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 5a123774c2e6..468819cdde87 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -410,6 +410,8 @@ struct virtio_device_id { */ struct hv_vmbus_device_id { __u8 guid[16]; + kernel_ulong_t driver_data /* Data private to the driver */ + __attribute__((aligned(sizeof(kernel_ulong_t)))); }; /* i2c */ -- cgit v1.2.2 From c75786c9ef9e726dc139325a775e90a684b00ed7 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Tue, 23 Aug 2011 14:37:46 +0300 Subject: nl80211/cfg80211: add STA WME parameters Add new NL80211_ATTR_STA_WME nested attribute that contains wme params needed by the low-level driver (uapsd_queues and max_sp). Add these params to the station_parameters struct as well. Signed-off-by: Eliad Peller Signed-off-by: John W. Linville --- include/linux/nl80211.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 3769303d6fa6..0343504082a8 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1042,6 +1042,9 @@ enum nl80211_commands { * (Re)Association Response frames when the driver (or firmware) replies to * (Re)Association Request frames. * + * @NL80211_ATTR_STA_WME: Nested attribute containing the wme configuration + * of the station, see &enum nl80211_sta_wme_attr. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1252,6 +1255,8 @@ enum nl80211_attrs { NL80211_ATTR_IE_PROBE_RESP, NL80211_ATTR_IE_ASSOC_RESP, + NL80211_ATTR_STA_WME, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -2482,4 +2487,22 @@ enum nl80211_hidden_ssid { NL80211_HIDDEN_SSID_ZERO_CONTENTS }; +/** + * enum nl80211_sta_wme_attr - station WME attributes + * @__NL80211_STA_WME_INVALID: invalid number for nested attribute + * @NL80211_STA_WME_QUEUES: bitmap of uapsd queues. + * @NL80211_STA_WME_MAX_SP: max service period. + * @__NL80211_STA_WME_AFTER_LAST: internal + * @NL80211_STA_WME_MAX: highest station WME attribute + */ +enum nl80211_sta_wme_attr { + __NL80211_STA_WME_INVALID, + NL80211_STA_WME_UAPSD_QUEUES, + NL80211_STA_WME_MAX_SP, + + /* keep last */ + __NL80211_STA_WME_AFTER_LAST, + NL80211_STA_WME_MAX = __NL80211_STA_WME_AFTER_LAST - 1 +}; + #endif /* __LINUX_NL80211_H */ -- cgit v1.2.2 From 22ad72b0277b02d4b4dee99ae69a58f616a46435 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:40:48 +0000 Subject: headers, pppox: Add missing #include to uses ETH_ALEN, defined in . Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/if_pppox.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h index 397921b09ef9..60e5558045c8 100644 --- a/include/linux/if_pppox.h +++ b/include/linux/if_pppox.h @@ -20,8 +20,8 @@ #include #include -#ifdef __KERNEL__ #include +#ifdef __KERNEL__ #include #include #include -- cgit v1.2.2 From c2e0cd88691f214fdeacb63bbd823703456a1617 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:43:18 +0000 Subject: headers, ax25: Add missing #include to , These headers use the ax25_address type defined in . Signed-off-by: Ben Hutchings Acked-by: Ralf Baechle Signed-off-by: David S. Miller --- include/linux/netrom.h | 2 ++ include/linux/rose.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netrom.h b/include/linux/netrom.h index 6939b32f66a0..af7313cc9cb6 100644 --- a/include/linux/netrom.h +++ b/include/linux/netrom.h @@ -7,6 +7,8 @@ #ifndef NETROM_KERNEL_H #define NETROM_KERNEL_H +#include + #define NETROM_MTU 236 #define NETROM_T1 1 diff --git a/include/linux/rose.h b/include/linux/rose.h index c7b4b184c82e..e8289cdbcc20 100644 --- a/include/linux/rose.h +++ b/include/linux/rose.h @@ -7,6 +7,8 @@ #ifndef ROSE_KERNEL_H #define ROSE_KERNEL_H +#include + #define ROSE_MTU 251 #define ROSE_MAX_DIGIS 6 -- cgit v1.2.2 From d4b172d2ecb99edfb6afce6af8a65447af347543 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:43:50 +0000 Subject: headers, pppol2tp: Use __kernel_pid_t in defines __kernel_pid_t for userland; pid_t is defined elsewhere (and potentially differently). Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/if_pppol2tp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_pppol2tp.h b/include/linux/if_pppol2tp.h index 184bc5566207..23cefa1111bf 100644 --- a/include/linux/if_pppol2tp.h +++ b/include/linux/if_pppol2tp.h @@ -39,7 +39,7 @@ struct pppol2tp_addr { * bits. So we need a different sockaddr structure. */ struct pppol2tpv3_addr { - pid_t pid; /* pid that owns the fd. + __kernel_pid_t pid; /* pid that owns the fd. * 0 => current */ int fd; /* FD of UDP or IP socket to use */ -- cgit v1.2.2 From bcb949b8847655516ba499ca75cd8529f167e360 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:43:55 +0000 Subject: headers, net: Use __kernel_sa_family_t in more definitions shared with userland Complete the work started with commit 6602a4baf4d1a73cc4685a39ef859e1c5ddf654c ('net: Make userland include of netlink.h more sane'). Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/atalk.h | 3 ++- include/linux/ax25.h | 2 +- include/linux/caif/caif_socket.h | 7 +------ include/linux/can.h | 2 +- include/linux/if_pppox.h | 7 ++++--- include/linux/in.h | 2 +- include/linux/ipx.h | 2 +- include/linux/irda.h | 9 +++------ include/linux/l2tp.h | 7 ++++--- include/linux/llc.h | 10 +++++++--- include/linux/netlink.h | 2 +- include/linux/phonet.h | 5 +++-- include/linux/rose.h | 5 +++-- include/linux/un.h | 4 +++- include/linux/x25.h | 3 ++- 15 files changed, 37 insertions(+), 33 deletions(-) (limited to 'include/linux') diff --git a/include/linux/atalk.h b/include/linux/atalk.h index d34c187432ed..f57c36881c48 100644 --- a/include/linux/atalk.h +++ b/include/linux/atalk.h @@ -3,6 +3,7 @@ #include #include +#include /* * AppleTalk networking structures @@ -28,7 +29,7 @@ struct atalk_addr { }; struct sockaddr_at { - sa_family_t sat_family; + __kernel_sa_family_t sat_family; __u8 sat_port; struct atalk_addr sat_addr; char sat_zero[8]; diff --git a/include/linux/ax25.h b/include/linux/ax25.h index 56c11f0dbd80..74c89a41732d 100644 --- a/include/linux/ax25.h +++ b/include/linux/ax25.h @@ -47,7 +47,7 @@ typedef struct { } ax25_address; struct sockaddr_ax25 { - sa_family_t sax25_family; + __kernel_sa_family_t sax25_family; ax25_address sax25_call; int sax25_ndigis; /* Digipeater ax25_address sets follow */ diff --git a/include/linux/caif/caif_socket.h b/include/linux/caif/caif_socket.h index d9cb19b7cff7..3f3bac6af7bc 100644 --- a/include/linux/caif/caif_socket.h +++ b/include/linux/caif/caif_socket.h @@ -9,12 +9,7 @@ #define _LINUX_CAIF_SOCKET_H #include - -#ifdef __KERNEL__ #include -#else -#include -#endif /** * enum caif_link_selector - Physical Link Selection. @@ -144,7 +139,7 @@ enum caif_debug_service { * CAIF Channel. It defines the service to connect to on the modem. */ struct sockaddr_caif { - sa_family_t family; + __kernel_sa_family_t family; union { struct { __u8 type; /* type: enum caif_at_type */ diff --git a/include/linux/can.h b/include/linux/can.h index d18333302cbd..bb047dc2de16 100644 --- a/include/linux/can.h +++ b/include/linux/can.h @@ -78,7 +78,7 @@ struct can_frame { * @can_addr: protocol specific address information */ struct sockaddr_can { - sa_family_t can_family; + __kernel_sa_family_t can_family; int can_ifindex; union { /* transport protocol class address information (e.g. ISOTP) */ diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h index 60e5558045c8..b5f927f59f26 100644 --- a/include/linux/if_pppox.h +++ b/include/linux/if_pppox.h @@ -20,6 +20,7 @@ #include #include +#include #include #ifdef __KERNEL__ #include @@ -63,7 +64,7 @@ struct pptp_addr { #define PX_MAX_PROTO 3 struct sockaddr_pppox { - sa_family_t sa_family; /* address family, AF_PPPOX */ + __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ unsigned int sa_protocol; /* protocol identifier */ union { struct pppoe_addr pppoe; @@ -77,7 +78,7 @@ struct sockaddr_pppox { * type instead. */ struct sockaddr_pppol2tp { - sa_family_t sa_family; /* address family, AF_PPPOX */ + __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ unsigned int sa_protocol; /* protocol identifier */ struct pppol2tp_addr pppol2tp; } __attribute__((packed)); @@ -86,7 +87,7 @@ struct sockaddr_pppol2tp { * bits. So we need a different sockaddr structure. */ struct sockaddr_pppol2tpv3 { - sa_family_t sa_family; /* address family, AF_PPPOX */ + __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ unsigned int sa_protocol; /* protocol identifier */ struct pppol2tpv3_addr pppol2tp; } __attribute__((packed)); diff --git a/include/linux/in.h b/include/linux/in.h index beeb6dee2b49..01129c0ea87c 100644 --- a/include/linux/in.h +++ b/include/linux/in.h @@ -182,7 +182,7 @@ struct in_pktinfo { /* Structure describing an Internet (IP) socket address. */ #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ struct sockaddr_in { - sa_family_t sin_family; /* Address family */ + __kernel_sa_family_t sin_family; /* Address family */ __be16 sin_port; /* Port number */ struct in_addr sin_addr; /* Internet address */ diff --git a/include/linux/ipx.h b/include/linux/ipx.h index aabb1d294025..3d48014cdd71 100644 --- a/include/linux/ipx.h +++ b/include/linux/ipx.h @@ -7,7 +7,7 @@ #define IPX_MTU 576 struct sockaddr_ipx { - sa_family_t sipx_family; + __kernel_sa_family_t sipx_family; __be16 sipx_port; __be32 sipx_network; unsigned char sipx_node[IPX_NODE_LEN]; diff --git a/include/linux/irda.h b/include/linux/irda.h index 00bdad0e8515..a014c3252311 100644 --- a/include/linux/irda.h +++ b/include/linux/irda.h @@ -26,12 +26,9 @@ #define KERNEL_IRDA_H #include +#include -/* Please do *not* add any #include in this file, this file is - * included as-is in user space. - * Please fix the calling file to properly included needed files before - * this one, or preferably to include instead. - * Jean II */ +/* Note that this file is shared with user space. */ /* Hint bit positions for first hint byte */ #define HINT_PNP 0x01 @@ -125,7 +122,7 @@ enum { #define LSAP_ANY 0xff struct sockaddr_irda { - sa_family_t sir_family; /* AF_IRDA */ + __kernel_sa_family_t sir_family; /* AF_IRDA */ __u8 sir_lsap_sel; /* LSAP selector */ __u32 sir_addr; /* Device address */ char sir_name[25]; /* Usually :IrDA:TinyTP */ diff --git a/include/linux/l2tp.h b/include/linux/l2tp.h index 4bdb31df8e72..e77d7f9bb246 100644 --- a/include/linux/l2tp.h +++ b/include/linux/l2tp.h @@ -8,8 +8,8 @@ #define _LINUX_L2TP_H_ #include -#ifdef __KERNEL__ #include +#ifdef __KERNEL__ #include #else #include @@ -26,14 +26,15 @@ #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ struct sockaddr_l2tpip { /* The first fields must match struct sockaddr_in */ - sa_family_t l2tp_family; /* AF_INET */ + __kernel_sa_family_t l2tp_family; /* AF_INET */ __be16 l2tp_unused; /* INET port number (unused) */ struct in_addr l2tp_addr; /* Internet address */ __u32 l2tp_conn_id; /* Connection ID of tunnel */ /* Pad to size of `struct sockaddr'. */ - unsigned char __pad[sizeof(struct sockaddr) - sizeof(sa_family_t) - + unsigned char __pad[sizeof(struct sockaddr) - + sizeof(__kernel_sa_family_t) - sizeof(__be16) - sizeof(struct in_addr) - sizeof(__u32)]; }; diff --git a/include/linux/llc.h b/include/linux/llc.h index ad7074ba81af..a2418ae13ee9 100644 --- a/include/linux/llc.h +++ b/include/linux/llc.h @@ -12,16 +12,20 @@ * * See the GNU General Public License for more details. */ + +#include + #define __LLC_SOCK_SIZE__ 16 /* sizeof(sockaddr_llc), word align. */ struct sockaddr_llc { - sa_family_t sllc_family; /* AF_LLC */ - sa_family_t sllc_arphrd; /* ARPHRD_ETHER */ + __kernel_sa_family_t sllc_family; /* AF_LLC */ + __kernel_sa_family_t sllc_arphrd; /* ARPHRD_ETHER */ unsigned char sllc_test; unsigned char sllc_xid; unsigned char sllc_ua; /* UA data, only for SOCK_STREAM. */ unsigned char sllc_sap; unsigned char sllc_mac[IFHWADDRLEN]; - unsigned char __pad[__LLC_SOCK_SIZE__ - sizeof(sa_family_t) * 2 - + unsigned char __pad[__LLC_SOCK_SIZE__ - + sizeof(__kernel_sa_family_t) * 2 - sizeof(unsigned char) * 4 - IFHWADDRLEN]; }; diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 180540a84d37..8180cd9d73d5 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -1,7 +1,7 @@ #ifndef __LINUX_NETLINK_H #define __LINUX_NETLINK_H -#include /* for sa_family_t */ +#include /* for __kernel_sa_family_t */ #include #define NETLINK_ROUTE 0 /* Routing/device hook */ diff --git a/include/linux/phonet.h b/include/linux/phonet.h index 6fb13841db45..f53a4167c5f4 100644 --- a/include/linux/phonet.h +++ b/include/linux/phonet.h @@ -24,6 +24,7 @@ #define LINUX_PHONET_H #include +#include /* Automatic protocol selection */ #define PN_PROTO_TRANSPORT 0 @@ -96,11 +97,11 @@ struct phonetmsg { /* Phonet socket address structure */ struct sockaddr_pn { - sa_family_t spn_family; + __kernel_sa_family_t spn_family; __u8 spn_obj; __u8 spn_dev; __u8 spn_resource; - __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3]; + __u8 spn_zero[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - 3]; } __attribute__((packed)); /* Well known address */ diff --git a/include/linux/rose.h b/include/linux/rose.h index e8289cdbcc20..1fcfe95893b8 100644 --- a/include/linux/rose.h +++ b/include/linux/rose.h @@ -7,6 +7,7 @@ #ifndef ROSE_KERNEL_H #define ROSE_KERNEL_H +#include #include #define ROSE_MTU 251 @@ -46,7 +47,7 @@ typedef struct { } rose_address; struct sockaddr_rose { - sa_family_t srose_family; + __kernel_sa_family_t srose_family; rose_address srose_addr; ax25_address srose_call; int srose_ndigis; @@ -54,7 +55,7 @@ struct sockaddr_rose { }; struct full_sockaddr_rose { - sa_family_t srose_family; + __kernel_sa_family_t srose_family; rose_address srose_addr; ax25_address srose_call; unsigned int srose_ndigis; diff --git a/include/linux/un.h b/include/linux/un.h index 45561c564b8e..3ed3e46c1b1f 100644 --- a/include/linux/un.h +++ b/include/linux/un.h @@ -1,10 +1,12 @@ #ifndef _LINUX_UN_H #define _LINUX_UN_H +#include + #define UNIX_PATH_MAX 108 struct sockaddr_un { - sa_family_t sun_family; /* AF_UNIX */ + __kernel_sa_family_t sun_family; /* AF_UNIX */ char sun_path[UNIX_PATH_MAX]; /* pathname */ }; diff --git a/include/linux/x25.h b/include/linux/x25.h index 6450a7f12074..810cce6737ea 100644 --- a/include/linux/x25.h +++ b/include/linux/x25.h @@ -12,6 +12,7 @@ #define X25_KERNEL_H #include +#include #define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0) #define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1) @@ -57,7 +58,7 @@ struct x25_address { * Linux X.25 Address structure, used for bind, and connect mostly. */ struct sockaddr_x25 { - sa_family_t sx25_family; /* Must be AF_X25 */ + __kernel_sa_family_t sx25_family; /* Must be AF_X25 */ struct x25_address sx25_addr; /* X.121 Address */ }; -- cgit v1.2.2 From 7ff30c43f316f1febcfb6e84d511ab34ea433e7b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:44:57 +0000 Subject: headers, netfilter: Use kernel type names __u8, __u16, __u32 These types are guaranteed to be defined by for both userland and kernel, unlike u_intN_t. Signed-off-by: Ben Hutchings Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter_arp/arp_tables.h | 14 +++++++------- include/linux/netfilter_ipv4/ip_tables.h | 20 ++++++++++---------- include/linux/netfilter_ipv6/ip6_tables.h | 22 +++++++++++----------- 3 files changed, 28 insertions(+), 28 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter_arp/arp_tables.h b/include/linux/netfilter_arp/arp_tables.h index adbf4bff87ed..e08565d45178 100644 --- a/include/linux/netfilter_arp/arp_tables.h +++ b/include/linux/netfilter_arp/arp_tables.h @@ -52,7 +52,7 @@ struct arpt_arp { struct in_addr smsk, tmsk; /* Device hw address length, src+target device addresses */ - u_int8_t arhln, arhln_mask; + __u8 arhln, arhln_mask; struct arpt_devaddr_info src_devaddr; struct arpt_devaddr_info tgt_devaddr; @@ -71,9 +71,9 @@ struct arpt_arp { unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ]; /* Flags word */ - u_int8_t flags; + __u8 flags; /* Inverse flags */ - u_int16_t invflags; + __u16 invflags; }; /* Values for "flag" field in struct arpt_ip (general arp structure). @@ -102,9 +102,9 @@ struct arpt_entry struct arpt_arp arp; /* Size of arpt_entry + matches */ - u_int16_t target_offset; + __u16 target_offset; /* Size of arpt_entry + matches + target */ - u_int16_t next_offset; + __u16 next_offset; /* Back pointer */ unsigned int comefrom; @@ -260,8 +260,8 @@ extern unsigned int arpt_do_table(struct sk_buff *skb, struct compat_arpt_entry { struct arpt_arp arp; - u_int16_t target_offset; - u_int16_t next_offset; + __u16 target_offset; + __u16 next_offset; compat_uint_t comefrom; struct compat_xt_counters counters; unsigned char elems[0]; diff --git a/include/linux/netfilter_ipv4/ip_tables.h b/include/linux/netfilter_ipv4/ip_tables.h index 64a5d95c58e8..db79231914ce 100644 --- a/include/linux/netfilter_ipv4/ip_tables.h +++ b/include/linux/netfilter_ipv4/ip_tables.h @@ -81,12 +81,12 @@ struct ipt_ip { unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ]; /* Protocol, 0 = ANY */ - u_int16_t proto; + __u16 proto; /* Flags word */ - u_int8_t flags; + __u8 flags; /* Inverse flags */ - u_int8_t invflags; + __u8 invflags; }; /* Values for "flag" field in struct ipt_ip (general ip structure). */ @@ -114,9 +114,9 @@ struct ipt_entry { unsigned int nfcache; /* Size of ipt_entry + matches */ - u_int16_t target_offset; + __u16 target_offset; /* Size of ipt_entry + matches + target */ - u_int16_t next_offset; + __u16 next_offset; /* Back pointer */ unsigned int comefrom; @@ -149,9 +149,9 @@ struct ipt_entry { /* ICMP matching stuff */ struct ipt_icmp { - u_int8_t type; /* type to match */ - u_int8_t code[2]; /* range of code */ - u_int8_t invflags; /* Inverse flags */ + __u8 type; /* type to match */ + __u8 code[2]; /* range of code */ + __u8 invflags; /* Inverse flags */ }; /* Values for "inv" field for struct ipt_icmp. */ @@ -288,8 +288,8 @@ extern unsigned int ipt_do_table(struct sk_buff *skb, struct compat_ipt_entry { struct ipt_ip ip; compat_uint_t nfcache; - u_int16_t target_offset; - u_int16_t next_offset; + __u16 target_offset; + __u16 next_offset; compat_uint_t comefrom; struct compat_xt_counters counters; unsigned char elems[0]; diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h index c9784f7a9c1f..f549adccc94c 100644 --- a/include/linux/netfilter_ipv6/ip6_tables.h +++ b/include/linux/netfilter_ipv6/ip6_tables.h @@ -81,14 +81,14 @@ struct ip6t_ip6 { * MH do not match any packets. * - You also need to set IP6T_FLAGS_PROTO to "flags" to check protocol. */ - u_int16_t proto; + __u16 proto; /* TOS to match iff flags & IP6T_F_TOS */ - u_int8_t tos; + __u8 tos; /* Flags word */ - u_int8_t flags; + __u8 flags; /* Inverse flags */ - u_int8_t invflags; + __u8 invflags; }; /* Values for "flag" field in struct ip6t_ip6 (general ip6 structure). */ @@ -118,9 +118,9 @@ struct ip6t_entry { unsigned int nfcache; /* Size of ipt_entry + matches */ - u_int16_t target_offset; + __u16 target_offset; /* Size of ipt_entry + matches + target */ - u_int16_t next_offset; + __u16 next_offset; /* Back pointer */ unsigned int comefrom; @@ -186,9 +186,9 @@ struct ip6t_error { /* ICMP matching stuff */ struct ip6t_icmp { - u_int8_t type; /* type to match */ - u_int8_t code[2]; /* range of code */ - u_int8_t invflags; /* Inverse flags */ + __u8 type; /* type to match */ + __u8 code[2]; /* range of code */ + __u8 invflags; /* Inverse flags */ }; /* Values for "inv" field for struct ipt_icmp. */ @@ -298,8 +298,8 @@ extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset, struct compat_ip6t_entry { struct ip6t_ip6 ipv6; compat_uint_t nfcache; - u_int16_t target_offset; - u_int16_t next_offset; + __u16 target_offset; + __u16 next_offset; compat_uint_t comefrom; struct compat_xt_counters counters; unsigned char elems[0]; -- cgit v1.2.2 From 3828620bc0c2d055c3e66c075de4c2a609baec26 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:45:14 +0000 Subject: headers, tipc: Add missing #include to for userland defines inline functions using ntohs() etc. For userland these are defined in . Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/tipc_config.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 0db239590b4d..9730b0e51e46 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -41,6 +41,10 @@ #include #include +#ifndef __KERNEL__ +#include /* for ntohs etc. */ +#endif + /* * Configuration * -- cgit v1.2.2 From 598aaff2ee05c91728e5845956dd9754ed04315c Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:45:36 +0000 Subject: headers, netfilter: Add missing #include for userland Various headers use INT_MIN and INT_MAX, which are defined for userland in . Signed-off-by: Ben Hutchings Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter_decnet.h | 3 +++ include/linux/netfilter_ipv4.h | 3 +++ include/linux/netfilter_ipv6.h | 3 +++ 3 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter_decnet.h b/include/linux/netfilter_decnet.h index 6f425369ee29..0b09732aacd5 100644 --- a/include/linux/netfilter_decnet.h +++ b/include/linux/netfilter_decnet.h @@ -11,6 +11,9 @@ /* only for userspace compatibility */ #ifndef __KERNEL__ + +#include /* for INT_MIN, INT_MAX */ + /* IP Cache bits. */ /* Src IP address. */ #define NFC_DN_SRC 0x0001 diff --git a/include/linux/netfilter_ipv4.h b/include/linux/netfilter_ipv4.h index 29c7727ff0e8..fa0946c549d3 100644 --- a/include/linux/netfilter_ipv4.h +++ b/include/linux/netfilter_ipv4.h @@ -9,6 +9,9 @@ /* only for userspace compatibility */ #ifndef __KERNEL__ + +#include /* for INT_MIN, INT_MAX */ + /* IP Cache bits. */ /* Src IP address. */ #define NFC_IP_SRC 0x0001 diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h index 1f7e300094cd..57c025127f1d 100644 --- a/include/linux/netfilter_ipv6.h +++ b/include/linux/netfilter_ipv6.h @@ -12,6 +12,9 @@ /* only for userspace compatibility */ #ifndef __KERNEL__ + +#include /* for INT_MIN, INT_MAX */ + /* IP Cache bits. */ /* Src IP address. */ #define NFC_IP6_SRC 0x0001 -- cgit v1.2.2 From 5740bb569303a1272cf082a652c020e980e4781b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:45:42 +0000 Subject: headers, xtables: Add missing #include Various headers use union nf_inet_addr, defined in . Signed-off-by: Ben Hutchings Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter/xt_connlimit.h | 1 + include/linux/netfilter/xt_conntrack.h | 1 + include/linux/netfilter/xt_iprange.h | 1 + 3 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_connlimit.h b/include/linux/netfilter/xt_connlimit.h index 0ca66e97acbc..d1366f05d1b2 100644 --- a/include/linux/netfilter/xt_connlimit.h +++ b/include/linux/netfilter/xt_connlimit.h @@ -2,6 +2,7 @@ #define _XT_CONNLIMIT_H #include +#include struct xt_connlimit_data; diff --git a/include/linux/netfilter/xt_conntrack.h b/include/linux/netfilter/xt_conntrack.h index 74b904d8f99c..e3c041d54020 100644 --- a/include/linux/netfilter/xt_conntrack.h +++ b/include/linux/netfilter/xt_conntrack.h @@ -6,6 +6,7 @@ #define _XT_CONNTRACK_H #include +#include #include #define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1)) diff --git a/include/linux/netfilter/xt_iprange.h b/include/linux/netfilter/xt_iprange.h index c1f21a779a45..25fd7cf851f0 100644 --- a/include/linux/netfilter/xt_iprange.h +++ b/include/linux/netfilter/xt_iprange.h @@ -2,6 +2,7 @@ #define _LINUX_NETFILTER_XT_IPRANGE_H 1 #include +#include enum { IPRANGE_SRC = 1 << 0, /* match source IP address */ -- cgit v1.2.2 From 767df1c7174406127d3619c2f7a862655b34074f Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 24 Aug 2011 18:46:06 +0000 Subject: headers, can: Add missing #include to uses type canid_t, defined in . Signed-off-by: Ben Hutchings Acked-by: Oliver Hartkopp Signed-off-by: David S. Miller --- include/linux/can/bcm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/can/bcm.h b/include/linux/can/bcm.h index 1432b278c52d..e96154de4039 100644 --- a/include/linux/can/bcm.h +++ b/include/linux/can/bcm.h @@ -15,6 +15,7 @@ #define CAN_BCM_H #include +#include /** * struct bcm_msg_head - head of messages to/from the broadcast manager -- cgit v1.2.2 From bc59ba399113fcbcac56ba22edde4b816199d48c Mon Sep 17 00:00:00 2001 From: chetan loke Date: Thu, 25 Aug 2011 10:43:30 +0000 Subject: af_packet: Prefixed tpacket_v3 structs to avoid name space collision structs introduced in tpacket_v3 implementation are prefixed with 'tpacket' to avoid namespace collision. Compile tested. Signed-off-by: Chetan Loke Signed-off-by: David S. Miller --- include/linux/if_packet.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index 5926d59c4295..5e76988f8ffc 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -126,7 +126,7 @@ struct tpacket2_hdr { __u16 tp_padding; }; -struct hdr_variant1 { +struct tpacket_hdr_variant1 { __u32 tp_rxhash; __u32 tp_vlan_tci; }; @@ -142,11 +142,11 @@ struct tpacket3_hdr { __u16 tp_net; /* pkt_hdr variants */ union { - struct hdr_variant1 hv1; + struct tpacket_hdr_variant1 hv1; }; }; -struct bd_ts { +struct tpacket_bd_ts { unsigned int ts_sec; union { unsigned int ts_usec; @@ -154,7 +154,7 @@ struct bd_ts { }; }; -struct hdr_v1 { +struct tpacket_hdr_v1 { __u32 block_status; __u32 num_pkts; __u32 offset_to_first_pkt; @@ -200,17 +200,17 @@ struct hdr_v1 { * Use the ts of the first packet in the block. * */ - struct bd_ts ts_first_pkt, ts_last_pkt; + struct tpacket_bd_ts ts_first_pkt, ts_last_pkt; }; -union bd_header_u { - struct hdr_v1 bh1; +union tpacket_bd_header_u { + struct tpacket_hdr_v1 bh1; }; -struct block_desc { +struct tpacket_block_desc { __u32 version; __u32 offset_to_priv; - union bd_header_u hdr; + union tpacket_bd_header_u hdr; }; #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) -- cgit v1.2.2 From 01dcc60a7cb8cd5193676554b94a90d349bdfd15 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 25 Aug 2011 11:16:00 +0200 Subject: new helper to create platform devices with dma mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit compared to the most powerful and already existing helper (namely platform_device_register_resndata) this allows to specify a dma_mask. To make eventual extensions later more easy, a struct holding the used information is created instead of passing the information by function parameters. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_device.h | 48 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 27bb05aae70d..651a066686ac 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -49,10 +49,54 @@ extern struct resource *platform_get_resource_byname(struct platform_device *, u extern int platform_get_irq_byname(struct platform_device *, const char *); extern int platform_add_devices(struct platform_device **, int); -extern struct platform_device *platform_device_register_resndata( +struct platform_device_info { + struct device *parent; + + const char *name; + int id; + + const struct resource *res; + unsigned int num_res; + + const void *data; + size_t size_data; + u64 dma_mask; +}; +extern struct platform_device *platform_device_register_full( + struct platform_device_info *pdevinfo); + +/** + * platform_device_register_resndata - add a platform-level device with + * resources and platform-specific data + * + * @parent: parent device for the device we're adding + * @name: base name of the device we're adding + * @id: instance id + * @res: set of resources that needs to be allocated for the device + * @num: number of resources + * @data: platform specific data for this platform device + * @size: size of platform specific data + * + * Returns &struct platform_device pointer on success, or ERR_PTR() on error. + */ +static inline struct platform_device *platform_device_register_resndata( struct device *parent, const char *name, int id, const struct resource *res, unsigned int num, - const void *data, size_t size); + const void *data, size_t size) { + + struct platform_device_info pdevinfo = { + .parent = parent, + .name = name, + .id = id, + .res = res, + .num_res = num, + .data = data, + .size_data = size, + .dma_mask = 0, + }; + + return platform_device_register_full(&pdevinfo); +} /** * platform_device_register_simple - add a platform-level device and its resources -- cgit v1.2.2 From 8cfb79134027e96bc11067da00d7ca73e58e69ce Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 8 Aug 2011 07:09:03 -0400 Subject: nfsd: remove unused defines At least one of these is actually wrong anyway. Signed-off-by: J. Bruce Fields --- include/linux/nfsd/const.h | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfsd/const.h b/include/linux/nfsd/const.h index 323f8cfa060a..feb3764617a4 100644 --- a/include/linux/nfsd/const.h +++ b/include/linux/nfsd/const.h @@ -14,11 +14,6 @@ #include #include -/* - * Maximum protocol version supported by knfsd - */ -#define NFSSVC_MAXVERS 3 - /* * Maximum blocksizes supported by daemon under various circumstances. */ @@ -42,14 +37,6 @@ */ #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) -#ifdef CONFIG_NFSD_V4 -# define NFSSVC_XDRSIZE NFS4_SVC_XDRSIZE -#elif defined(CONFIG_NFSD_V3) -# define NFSSVC_XDRSIZE NFS3_SVC_XDRSIZE -#else -# define NFSSVC_XDRSIZE NFS2_SVC_XDRSIZE -#endif - #endif /* __KERNEL__ */ #endif /* _LINUX_NFSD_CONST_H */ -- cgit v1.2.2 From c10bd39d800d42adef55ed9016f802677cd0ab5f Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 19 Aug 2011 11:38:52 -0400 Subject: Remove include/linux/nfsd/const.h Userspace shouldn't have a use for these constants. Nothing here is used outside fs/nfsd. Signed-off-by: J. Bruce Fields --- include/linux/nfsd/Kbuild | 1 - include/linux/nfsd/const.h | 42 ------------------------------------------ include/linux/nfsd/nfsfh.h | 7 +++++-- 3 files changed, 5 insertions(+), 45 deletions(-) delete mode 100644 include/linux/nfsd/const.h (limited to 'include/linux') diff --git a/include/linux/nfsd/Kbuild b/include/linux/nfsd/Kbuild index 55d1467de3c1..0e528606d46f 100644 --- a/include/linux/nfsd/Kbuild +++ b/include/linux/nfsd/Kbuild @@ -1,4 +1,3 @@ -header-y += const.h header-y += debug.h header-y += export.h header-y += nfsfh.h diff --git a/include/linux/nfsd/const.h b/include/linux/nfsd/const.h deleted file mode 100644 index feb3764617a4..000000000000 --- a/include/linux/nfsd/const.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * include/linux/nfsd/const.h - * - * Various constants related to NFS. - * - * Copyright (C) 1995-1997 Olaf Kirch - */ - -#ifndef _LINUX_NFSD_CONST_H -#define _LINUX_NFSD_CONST_H - -#include -#include -#include -#include - -/* - * Maximum blocksizes supported by daemon under various circumstances. - */ -#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD -/* NFSv2 is limited by the protocol specification, see RFC 1094 */ -#define NFSSVC_MAXBLKSIZE_V2 (8*1024) - -#ifdef __KERNEL__ - -#include - -/* - * Largest number of bytes we need to allocate for an NFS - * call or reply. Used to control buffer sizes. We use - * the length of v3 WRITE, READDIR and READDIR replies - * which are an RPC header, up to 26 XDR units of reply - * data, and some page data. - * - * Note that accuracy here doesn't matter too much as the - * size is rounded up to a page size when allocating space. - */ -#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) - -#endif /* __KERNEL__ */ - -#endif /* _LINUX_NFSD_CONST_H */ diff --git a/include/linux/nfsd/nfsfh.h b/include/linux/nfsd/nfsfh.h index f76d80ccec10..ce4743a26015 100644 --- a/include/linux/nfsd/nfsfh.h +++ b/include/linux/nfsd/nfsfh.h @@ -14,11 +14,14 @@ #ifndef _LINUX_NFSD_FH_H #define _LINUX_NFSD_FH_H -# include +#include +#include +#include +#include +#include #ifdef __KERNEL__ # include #endif -#include /* * This is the old "dentry style" Linux NFSv2 file handle. -- cgit v1.2.2 From a9004abc34239705840eaf6fe3d6cc9cb7656cba Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 23 Aug 2011 15:43:04 -0400 Subject: nfsd4: cleanup and consolidate seqid_mutating_err Signed-off-by: J. Bruce Fields --- include/linux/nfs4.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 76f99e8714f3..b875b0324fc0 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -373,6 +373,22 @@ enum nfsstat4 { NFS4ERR_DELEG_REVOKED = 10087, /* deleg./layout revoked */ }; +static inline bool seqid_mutating_err(u32 err) +{ + /* rfc 3530 section 8.1.5: */ + switch (err) { + case NFS4ERR_STALE_CLIENTID: + case NFS4ERR_STALE_STATEID: + case NFS4ERR_BAD_STATEID: + case NFS4ERR_BAD_SEQID: + case NFS4ERR_BADXDR: + case NFS4ERR_RESOURCE: + case NFS4ERR_NOFILEHANDLE: + return false; + }; + return true; +} + /* * Note: NF4BAD is not actually part of the protocol; it is just used * internally by nfsd. -- cgit v1.2.2 From 500c524aad173864a58e128d0be9713fa5846471 Mon Sep 17 00:00:00 2001 From: Xin Xie Date: Tue, 9 Aug 2011 18:47:50 +0800 Subject: regulator: tps6586x: add SMx slew rate setting Add output vlotage slew rate setting for SM0/SM1 Signed-off-by: Xin Xie Signed-off-by: Danny Huang Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/tps6586x.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps6586x.h b/include/linux/mfd/tps6586x.h index b6bab1b04e25..b19176eab44d 100644 --- a/include/linux/mfd/tps6586x.h +++ b/include/linux/mfd/tps6586x.h @@ -1,6 +1,18 @@ #ifndef __LINUX_MFD_TPS6586X_H #define __LINUX_MFD_TPS6586X_H +#define TPS6586X_SLEW_RATE_INSTANTLY 0x00 +#define TPS6586X_SLEW_RATE_110UV 0x01 +#define TPS6586X_SLEW_RATE_220UV 0x02 +#define TPS6586X_SLEW_RATE_440UV 0x03 +#define TPS6586X_SLEW_RATE_880UV 0x04 +#define TPS6586X_SLEW_RATE_1760UV 0x05 +#define TPS6586X_SLEW_RATE_3520UV 0x06 +#define TPS6586X_SLEW_RATE_7040UV 0x07 + +#define TPS6586X_SLEW_RATE_SET 0x08 +#define TPS6586X_SLEW_RATE_MASK 0x07 + enum { TPS6586X_ID_SM_0, TPS6586X_ID_SM_1, @@ -48,6 +60,10 @@ enum { TPS6586X_INT_RTC_ALM2, }; +struct tps6586x_settings { + int slew_rate; +}; + struct tps6586x_subdev_info { int id; const char *name; -- cgit v1.2.2 From 3c9c36bcedd426f2be2826da43e5163de61735f7 Mon Sep 17 00:00:00 2001 From: Bhanu Prakash Gollapudi Date: Fri, 26 Aug 2011 09:45:41 +0000 Subject: net: Define NETDEV_FCOE_WWNN, NETDEV_FCOE_WWPN only when CONFIG_LIBFCOE is enabled bnx2fc driver calls netdev->netdev_ops->ndo_fcoe_get_wwn() and it may not be defined with the current Kconfig dependencies. ndo_fcoe_get_wwn is dependent on CONFIG_FCOE, but bnx2fc does not select CONFIG_FCOE, as it does not depend on fcoe driver. Since both fcoe and bnx2fc drivers select CONFIG_LIBFCOE, define NETDEV_FCOE_WWNN and NETDEV_FCOE_WWPN when CONFIG_LIBFCOE is defined. Reported-by: Stephen Rothwell Reported-by: Randy Dunlap Cc: Yi Zou Signed-off-by: Bhanu Prakash Gollapudi Signed-off-by: Michael Chan Reviewed-by: Yi Zou Acked-by: Randy Dunlap Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 125f9fb8ece4..0a7f619f284e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -922,11 +922,15 @@ struct net_device_ops { u16 xid, struct scatterlist *sgl, unsigned int sgc); +#endif + +#if defined(CONFIG_LIBFCOE) || defined(CONFIG_LIBFCOE_MODULE) #define NETDEV_FCOE_WWNN 0 #define NETDEV_FCOE_WWPN 1 int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); #endif + #ifdef CONFIG_RFS_ACCEL int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, -- cgit v1.2.2 From a72c5e5eb738033938ab30d6a634b74d1d060f10 Mon Sep 17 00:00:00 2001 From: Nao Nishijima Date: Thu, 25 Aug 2011 18:04:06 +0900 Subject: [SCSI] genhd: add a new attribute "alias" in gendisk This patch allows the user to set an "alias" of the disk via sysfs interface. This patch only adds a new attribute "alias" in gendisk structure. To show the alias instead of the device name in kernel messages, we need to revise printk messages and use alias_name() in them. Example: (current) printk("disk name is %s\n", disk->disk_name); (new) printk("disk name is %s\n", alias_name(disk)); Users can use alphabets, numbers, '-' and '_' in "alias" attribute. A disk can have an "alias" which length is up to 255 bytes. This attribute is write-once. Suggested-by: James Bottomley Suggested-by: Jon Masters Signed-off-by: Nao Nishijima Signed-off-by: James Bottomley --- include/linux/genhd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 02fa4697a0e5..6957350e122f 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -21,6 +21,8 @@ #define dev_to_part(device) container_of((device), struct hd_struct, __dev) #define disk_to_dev(disk) (&(disk)->part0.__dev) #define part_to_dev(part) (&((part)->__dev)) +#define alias_name(disk) ((disk)->alias ? (disk)->alias : \ + (disk)->disk_name) extern struct device_type part_type; extern struct kobject *block_depr; @@ -58,6 +60,7 @@ enum { #define DISK_MAX_PARTS 256 #define DISK_NAME_LEN 32 +#define ALIAS_LEN 256 #include #include @@ -162,6 +165,7 @@ struct gendisk { * disks that can't be partitioned. */ char disk_name[DISK_NAME_LEN]; /* name of major driver */ + char *alias; /* alias name of disk */ char *(*devnode)(struct gendisk *gd, mode_t *mode); unsigned int events; /* supported events */ -- cgit v1.2.2 From eab00a0da292fa7118aaf20da78e834866de00ae Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Mon, 18 Jul 2011 08:40:03 -0300 Subject: [media] v4l: events: Define V4L2_EVENT_FRAME_SYNC Define a frame sync event to tell user space when the reception of a frame starts. Signed-off-by: Sakari Ailus Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index fca24cc50436..a5359c6e7577 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -2006,6 +2006,7 @@ struct v4l2_streamparm { #define V4L2_EVENT_VSYNC 1 #define V4L2_EVENT_EOS 2 #define V4L2_EVENT_CTRL 3 +#define V4L2_EVENT_FRAME_SYNC 4 #define V4L2_EVENT_PRIVATE_START 0x08000000 /* Payload for V4L2_EVENT_VSYNC */ @@ -2032,12 +2033,17 @@ struct v4l2_event_ctrl { __s32 default_value; }; +struct v4l2_event_frame_sync { + __u32 frame_sequence; +}; + struct v4l2_event { __u32 type; union { - struct v4l2_event_vsync vsync; - struct v4l2_event_ctrl ctrl; - __u8 data[64]; + struct v4l2_event_vsync vsync; + struct v4l2_event_ctrl ctrl; + struct v4l2_event_frame_sync frame_sync; + __u8 data[64]; } u; __u32 pending; __u32 sequence; -- cgit v1.2.2 From 69d232ae8e95a229e7544989d6014e875deeb121 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 15 Jun 2011 15:58:48 -0300 Subject: [media] omap3isp: ccdc: Use generic frame sync event instead of private HS_VS event The ccdc block in the omap3isp produces events whenever it starts receiving a new frame. A private HS_VS event was used for this previously. Now, the generic V4L2_EVENT_FRAME_SYNC event is being used for the purpose. This patch also provides the frame sequence number to user space. Signed-off-by: Sakari Ailus Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/omap3isp.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/omap3isp.h b/include/linux/omap3isp.h index b6111f8cd49a..c73a34c3434d 100644 --- a/include/linux/omap3isp.h +++ b/include/linux/omap3isp.h @@ -62,14 +62,12 @@ * V4L2_EVENT_OMAP3ISP_AEWB: AEWB statistics data ready * V4L2_EVENT_OMAP3ISP_AF: AF statistics data ready * V4L2_EVENT_OMAP3ISP_HIST: Histogram statistics data ready - * V4L2_EVENT_OMAP3ISP_HS_VS: Horizontal/vertical synchronization detected */ #define V4L2_EVENT_OMAP3ISP_CLASS (V4L2_EVENT_PRIVATE_START | 0x100) #define V4L2_EVENT_OMAP3ISP_AEWB (V4L2_EVENT_OMAP3ISP_CLASS | 0x1) #define V4L2_EVENT_OMAP3ISP_AF (V4L2_EVENT_OMAP3ISP_CLASS | 0x2) #define V4L2_EVENT_OMAP3ISP_HIST (V4L2_EVENT_OMAP3ISP_CLASS | 0x3) -#define V4L2_EVENT_OMAP3ISP_HS_VS (V4L2_EVENT_OMAP3ISP_CLASS | 0x4) struct omap3isp_stat_event_status { __u32 frame_number; -- cgit v1.2.2 From c64e148a3be3cb786534ad38298c25c833116c26 Mon Sep 17 00:00:00 2001 From: Vaibhav Nagarnaik Date: Tue, 16 Aug 2011 14:46:16 -0700 Subject: trace: Add ring buffer stats to measure rate of events The stats file under per_cpu folder provides the number of entries, overruns and other statistics about the CPU ring buffer. However, the numbers do not provide any indication of how full the ring buffer is in bytes compared to the overall size in bytes. Also, it is helpful to know the rate at which the cpu buffer is filling up. This patch adds an entry "bytes: " in printed stats for per_cpu ring buffer which provides the actual bytes consumed in the ring buffer. This field includes the number of bytes used by recorded events and the padding bytes added when moving the tail pointer to next page. It also adds the following time stamps: "oldest event ts:" - the oldest timestamp in the ring buffer "now ts:" - the timestamp at the time of reading The field "now ts" provides a consistent time snapshot to the userspace when being read. This is read from the same trace clock used by tracing event timestamps. Together, these values provide the rate at which the buffer is filling up, from the formula: bytes / (now_ts - oldest_event_ts) Signed-off-by: Vaibhav Nagarnaik Cc: Michael Rubin Cc: David Sharp Link: http://lkml.kernel.org/r/1313531179-9323-3-git-send-email-vnagarnaik@google.com Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index b891de96000f..67be0376d8e3 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -154,6 +154,8 @@ void ring_buffer_record_enable(struct ring_buffer *buffer); void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu); void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu); +unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu); +unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_entries(struct ring_buffer *buffer); unsigned long ring_buffer_overruns(struct ring_buffer *buffer); unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu); -- cgit v1.2.2 From c152292f9ee7eb4ed30edc0bd5027a5beef5f5e8 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 26 Aug 2011 17:22:06 -0400 Subject: nfsd: remove include/linux/nfsd/syscall.h We don't need this any more. Signed-off-by: J. Bruce Fields --- include/linux/nfsd/Kbuild | 1 - include/linux/nfsd/syscall.h | 116 ------------------------------------------- 2 files changed, 117 deletions(-) delete mode 100644 include/linux/nfsd/syscall.h (limited to 'include/linux') diff --git a/include/linux/nfsd/Kbuild b/include/linux/nfsd/Kbuild index 0e528606d46f..b8d4001212b3 100644 --- a/include/linux/nfsd/Kbuild +++ b/include/linux/nfsd/Kbuild @@ -2,4 +2,3 @@ header-y += debug.h header-y += export.h header-y += nfsfh.h header-y += stats.h -header-y += syscall.h diff --git a/include/linux/nfsd/syscall.h b/include/linux/nfsd/syscall.h deleted file mode 100644 index 812bc1e160dc..000000000000 --- a/include/linux/nfsd/syscall.h +++ /dev/null @@ -1,116 +0,0 @@ -/* - * include/linux/nfsd/syscall.h - * - * This file holds all declarations for the knfsd syscall interface. - * - * Copyright (C) 1995-1997 Olaf Kirch - */ - -#ifndef NFSD_SYSCALL_H -#define NFSD_SYSCALL_H - -#include -#include - -/* - * Version of the syscall interface - */ -#define NFSCTL_VERSION 0x0201 - -/* - * These are the commands understood by nfsctl(). - */ -#define NFSCTL_SVC 0 /* This is a server process. */ -#define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */ -#define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */ -#define NFSCTL_EXPORT 3 /* export a file system. */ -#define NFSCTL_UNEXPORT 4 /* unexport a file system. */ -/*#define NFSCTL_UGIDUPDATE 5 / * update a client's uid/gid map. DISCARDED */ -/*#define NFSCTL_GETFH 6 / * get an fh by ino DISCARDED */ -#define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */ -#define NFSCTL_GETFS 8 /* get an fh by path with max FH len */ - -/* SVC */ -struct nfsctl_svc { - unsigned short svc_port; - int svc_nthreads; -}; - -/* ADDCLIENT/DELCLIENT */ -struct nfsctl_client { - char cl_ident[NFSCLNT_IDMAX+1]; - int cl_naddr; - struct in_addr cl_addrlist[NFSCLNT_ADDRMAX]; - int cl_fhkeytype; - int cl_fhkeylen; - unsigned char cl_fhkey[NFSCLNT_KEYMAX]; -}; - -/* EXPORT/UNEXPORT */ -struct nfsctl_export { - char ex_client[NFSCLNT_IDMAX+1]; - char ex_path[NFS_MAXPATHLEN+1]; - __kernel_old_dev_t ex_dev; - __kernel_ino_t ex_ino; - int ex_flags; - __kernel_uid_t ex_anon_uid; - __kernel_gid_t ex_anon_gid; -}; - -/* GETFD */ -struct nfsctl_fdparm { - struct sockaddr gd_addr; - char gd_path[NFS_MAXPATHLEN+1]; - int gd_version; -}; - -/* GETFS - GET Filehandle with Size */ -struct nfsctl_fsparm { - struct sockaddr gd_addr; - char gd_path[NFS_MAXPATHLEN+1]; - int gd_maxlen; -}; - -/* - * This is the argument union. - */ -struct nfsctl_arg { - int ca_version; /* safeguard */ - union { - struct nfsctl_svc u_svc; - struct nfsctl_client u_client; - struct nfsctl_export u_export; - struct nfsctl_fdparm u_getfd; - struct nfsctl_fsparm u_getfs; - /* - * The following dummy member is needed to preserve binary compatibility - * on platforms where alignof(void*)>alignof(int). It's needed because - * this union used to contain a member (u_umap) which contained a - * pointer. - */ - void *u_ptr; - } u; -#define ca_svc u.u_svc -#define ca_client u.u_client -#define ca_export u.u_export -#define ca_getfd u.u_getfd -#define ca_getfs u.u_getfs -}; - -union nfsctl_res { - __u8 cr_getfh[NFS_FHSIZE]; - struct knfsd_fh cr_getfs; -}; - -#ifdef __KERNEL__ -/* - * Kernel syscall implementation. - */ -extern int exp_addclient(struct nfsctl_client *ncp); -extern int exp_delclient(struct nfsctl_client *ncp); -extern int exp_export(struct nfsctl_export *nxp); -extern int exp_unexport(struct nfsctl_export *nxp); - -#endif /* __KERNEL__ */ - -#endif /* NFSD_SYSCALL_H */ -- cgit v1.2.2 From 1cd9f0976aa4606db8d6e3dc3edd0aca8019372a Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 31 Aug 2011 11:54:51 -0400 Subject: ext2,ext3,ext4: don't inherit APPEND_FL or IMMUTABLE_FL for new inodes This doesn't make much sense, and it exposes a bug in the kernel where attempts to create a new file in an append-only directory using O_CREAT will fail (but still leave a zero-length file). This was discovered when xfstests #79 was generalized so it could run on all file systems. Signed-off-by: "Theodore Ts'o" Cc:stable@kernel.org --- include/linux/ext2_fs.h | 4 ++-- include/linux/ext3_fs.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ext2_fs.h b/include/linux/ext2_fs.h index 53792bf36c71..ce1b719e8bd4 100644 --- a/include/linux/ext2_fs.h +++ b/include/linux/ext2_fs.h @@ -197,8 +197,8 @@ struct ext2_group_desc /* Flags that should be inherited by new inodes from their parent. */ #define EXT2_FL_INHERITED (EXT2_SECRM_FL | EXT2_UNRM_FL | EXT2_COMPR_FL |\ - EXT2_SYNC_FL | EXT2_IMMUTABLE_FL | EXT2_APPEND_FL |\ - EXT2_NODUMP_FL | EXT2_NOATIME_FL | EXT2_COMPRBLK_FL|\ + EXT2_SYNC_FL | EXT2_NODUMP_FL |\ + EXT2_NOATIME_FL | EXT2_COMPRBLK_FL |\ EXT2_NOCOMP_FL | EXT2_JOURNAL_DATA_FL |\ EXT2_NOTAIL_FL | EXT2_DIRSYNC_FL) diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 67a803aee619..0244611eb2b8 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -180,8 +180,8 @@ struct ext3_group_desc /* Flags that should be inherited by new inodes from their parent. */ #define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\ - EXT3_SYNC_FL | EXT3_IMMUTABLE_FL | EXT3_APPEND_FL |\ - EXT3_NODUMP_FL | EXT3_NOATIME_FL | EXT3_COMPRBLK_FL|\ + EXT3_SYNC_FL | EXT3_NODUMP_FL |\ + EXT3_NOATIME_FL | EXT3_COMPRBLK_FL |\ EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\ EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL) -- cgit v1.2.2 From 83dc314bea4d701e3e5fa048314dfb02f7ef769c Mon Sep 17 00:00:00 2001 From: Andreas Oberritter Date: Mon, 8 Aug 2011 11:54:35 -0300 Subject: [media] DVB: Add SYS_TURBO for north american turbo code FEC Signed-off-by: Andreas Oberritter Signed-off-by: Mauro Carvalho Chehab --- include/linux/dvb/frontend.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h index 36a3ed63f571..1b1094c35e4f 100644 --- a/include/linux/dvb/frontend.h +++ b/include/linux/dvb/frontend.h @@ -349,6 +349,7 @@ typedef enum fe_delivery_system { SYS_CMMB, SYS_DAB, SYS_DVBT2, + SYS_TURBO, } fe_delivery_system_t; struct dtv_cmds_h { -- cgit v1.2.2 From c0f856d3f0e0643c617a86756fd58f23766cfe25 Mon Sep 17 00:00:00 2001 From: Andreas Oberritter Date: Tue, 16 Aug 2011 11:04:07 -0300 Subject: [media] DVB: increment minor version after addition of SYS_TURBO Signed-off-by: Andreas Oberritter Signed-off-by: Mauro Carvalho Chehab --- include/linux/dvb/version.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dvb/version.h b/include/linux/dvb/version.h index 1421cc84afaa..66594b1d5d7b 100644 --- a/include/linux/dvb/version.h +++ b/include/linux/dvb/version.h @@ -24,6 +24,6 @@ #define _DVBVERSION_H_ #define DVB_API_VERSION 5 -#define DVB_API_VERSION_MINOR 3 +#define DVB_API_VERSION_MINOR 4 #endif /*_DVBVERSION_H_*/ -- cgit v1.2.2 From d2159fb7b8bac12684aabdf41d84b56da9f5c062 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sun, 4 Sep 2011 10:20:14 -0400 Subject: jbd2: use gfp_t instead of int This silences some Sparse warnings: fs/jbd2/transaction.c:135:69: warning: incorrect type in argument 2 (different base types) fs/jbd2/transaction.c:135:69: expected restricted gfp_t [usertype] flags fs/jbd2/transaction.c:135:69: got int [signed] gfp_mask Signed-off-by: Dan Carpenter Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 38f307b8c334..3dd101e49d36 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1106,9 +1106,9 @@ static inline handle_t *journal_current_handle(void) */ extern handle_t *jbd2_journal_start(journal_t *, int nblocks); -extern handle_t *jbd2__journal_start(journal_t *, int nblocks, int gfp_mask); +extern handle_t *jbd2__journal_start(journal_t *, int nblocks, gfp_t gfp_mask); extern int jbd2_journal_restart(handle_t *, int nblocks); -extern int jbd2__journal_restart(handle_t *, int nblocks, int gfp_mask); +extern int jbd2__journal_restart(handle_t *, int nblocks, gfp_t gfp_mask); extern int jbd2_journal_extend (handle_t *, int nblocks); extern int jbd2_journal_get_write_access(handle_t *, struct buffer_head *); extern int jbd2_journal_get_create_access (handle_t *, struct buffer_head *); -- cgit v1.2.2 From 5b457e3910251ef28712ba5d14adac8194bd5b2c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 5 Sep 2011 08:12:05 -0700 Subject: regmap: Remove redundant owner field from the bus type struct No longer used as users link directly with the bus types so the core module infrastructure does refcounting for us. Signed-off-by: Mark Brown --- include/linux/regmap.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 449e2642da95..9438a89e1573 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -85,8 +85,6 @@ typedef int (*regmap_hw_read)(struct device *dev, * if not implemented on a given device. * @read: Read operation. Data is returned in the buffer used to transmit * data. - * @owner: Module with the bus implementation, used to pin the implementation - * in memory. * @read_flag_mask: Mask to be set in the top byte of the register when doing * a read. */ @@ -94,7 +92,6 @@ struct regmap_bus { regmap_hw_write write; regmap_hw_gather_write gather_write; regmap_hw_read read; - struct module *owner; u8 read_flag_mask; }; -- cgit v1.2.2 From 6f306441e97f8f9d27c43a536360fe221f675a71 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 5 Sep 2011 20:46:32 +0200 Subject: regmap: Add support for device specific write and read flag masks. Some buses like SPI have no standard notation of read or write operations. The general scheme here is to set or clear specific bits in the register address to indicate whether the operation is a read or write. We already support having a read flag mask per bus, but as there is no standard the bits which need to be set or cleared differ between devices and vendors, thus we need a mechanism to specify them per device. This patch adds two new entries to the regmap_config struct, read_flag_mask and write_flag_mask. These will be or'ed onto the top byte when doing a read or write operation. If both masks are empty the device will fallback to the regmap_bus masks. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- include/linux/regmap.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 9438a89e1573..18d4afaac166 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -53,6 +53,12 @@ struct reg_default { * @reg_defaults: Power on reset values for registers (for use with * register cache support). * @num_reg_defaults: Number of elements in reg_defaults. + * + * @read_flag_mask: Mask to be set in the top byte of the register when doing + * a read. + * @write_flag_mask: Mask to be set in the top byte of the register when doing + * a write. If both read_flag_mask and write_flag_mask are + * empty the regmap_bus default masks are used. */ struct regmap_config { int reg_bits; @@ -66,6 +72,9 @@ struct regmap_config { unsigned int max_register; struct reg_default *reg_defaults; int num_reg_defaults; + + u8 read_flag_mask; + u8 write_flag_mask; }; typedef int (*regmap_hw_write)(struct device *dev, const void *data, -- cgit v1.2.2 From d1748302f70be7469809809283fe164156a34231 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 23 Aug 2011 15:29:42 +0200 Subject: clockevents: Make minimum delay adjustments configurable The automatic increase of the min_delta_ns of a clockevents device should be done in the clockevents code as the minimum delay is an attribute of the clockevents device. In addition not all architectures want the automatic adjustment, on a massively virtualized system it can happen that the programming of a clock event fails several times in a row because the virtual cpu has been rescheduled quickly enough. In that case the minimum delay will erroneously be increased with no way back. The new config symbol GENERIC_CLOCKEVENTS_MIN_ADJUST is used to enable the automatic adjustment. The config option is selected only for x86. Signed-off-by: Martin Schwidefsky Cc: john stultz Link: http://lkml.kernel.org/r/20110823133142.494157493@de.ibm.com Signed-off-by: Thomas Gleixner --- include/linux/clockchips.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index d6733e27af34..39bb050bdbb2 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -140,7 +140,7 @@ extern void clockevents_set_mode(struct clock_event_device *dev, enum clock_event_mode mode); extern int clockevents_register_notifier(struct notifier_block *nb); extern int clockevents_program_event(struct clock_event_device *dev, - ktime_t expires, ktime_t now); + ktime_t expires, bool force); extern void clockevents_handle_noop(struct clock_event_device *dev); -- cgit v1.2.2 From 65516f8a7c2028381f0dae4c16ddb621c96158cc Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 23 Aug 2011 15:29:43 +0200 Subject: clockevents: Add direct ktime programming function There is at least one architecture (s390) with a sane clockevent device that can be programmed with the equivalent of a ktime. No need to create a delta against the current time, the ktime can be used directly. A new clock device function 'set_next_ktime' is introduced that is called with the unmodified ktime for the timer if the clock event device has the CLOCK_EVT_FEAT_KTIME bit set. Signed-off-by: Martin Schwidefsky Cc: john stultz Link: http://lkml.kernel.org/r/20110823133142.815350967@de.ibm.com Signed-off-by: Thomas Gleixner --- include/linux/clockchips.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 39bb050bdbb2..81e803e90aa4 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -45,20 +45,22 @@ enum clock_event_nofitiers { */ #define CLOCK_EVT_FEAT_PERIODIC 0x000001 #define CLOCK_EVT_FEAT_ONESHOT 0x000002 +#define CLOCK_EVT_FEAT_KTIME 0x000004 /* * x86(64) specific misfeatures: * * - Clockevent source stops in C3 State and needs broadcast support. * - Local APIC timer is used as a dummy device. */ -#define CLOCK_EVT_FEAT_C3STOP 0x000004 -#define CLOCK_EVT_FEAT_DUMMY 0x000008 +#define CLOCK_EVT_FEAT_C3STOP 0x000008 +#define CLOCK_EVT_FEAT_DUMMY 0x000010 /** * struct clock_event_device - clock event device descriptor * @event_handler: Assigned by the framework to be called by the low * level handler of the event source - * @set_next_event: set next event function + * @set_next_event: set next event function using a clocksource delta + * @set_next_ktime: set next event function using a direct ktime value * @next_event: local storage for the next event in oneshot mode * @max_delta_ns: maximum delta value in ns * @min_delta_ns: minimum delta value in ns @@ -81,6 +83,8 @@ struct clock_event_device { void (*event_handler)(struct clock_event_device *); int (*set_next_event)(unsigned long evt, struct clock_event_device *); + int (*set_next_ktime)(ktime_t expires, + struct clock_event_device *); ktime_t next_event; u64 max_delta_ns; u64 min_delta_ns; -- cgit v1.2.2 From e8abccb719377af63cb0f1fed289db405e3def16 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 1 Sep 2011 12:42:04 +0200 Subject: posix-cpu-timers: Cure SMP accounting oddities David reported: Attached below is a watered-down version of rt/tst-cpuclock2.c from GLIBC. Just build it with "gcc -o test test.c -lpthread -lrt" or similar. Run it several times, and you will see cases where the main thread will measure a process clock difference before and after the nanosleep which is smaller than the cpu-burner thread's individual thread clock difference. This doesn't make any sense since the cpu-burner thread is part of the top-level process's thread group. I've reproduced this on both x86-64 and sparc64 (using both 32-bit and 64-bit binaries). For example: [davem@boricha build-x86_64-linux]$ ./test process: before(0.001221967) after(0.498624371) diff(497402404) thread: before(0.000081692) after(0.498316431) diff(498234739) self: before(0.001223521) after(0.001240219) diff(16698) [davem@boricha build-x86_64-linux]$ The diff of 'process' should always be >= the diff of 'thread'. I make sure to wrap the 'thread' clock measurements the most tightly around the nanosleep() call, and that the 'process' clock measurements are the outer-most ones. --- #include #include #include #include #include #include #include #include static pthread_barrier_t barrier; static void *chew_cpu(void *arg) { pthread_barrier_wait(&barrier); while (1) __asm__ __volatile__("" : : : "memory"); return NULL; } int main(void) { clockid_t process_clock, my_thread_clock, th_clock; struct timespec process_before, process_after; struct timespec me_before, me_after; struct timespec th_before, th_after; struct timespec sleeptime; unsigned long diff; pthread_t th; int err; err = clock_getcpuclockid(0, &process_clock); if (err) return 1; err = pthread_getcpuclockid(pthread_self(), &my_thread_clock); if (err) return 1; pthread_barrier_init(&barrier, NULL, 2); err = pthread_create(&th, NULL, chew_cpu, NULL); if (err) return 1; err = pthread_getcpuclockid(th, &th_clock); if (err) return 1; pthread_barrier_wait(&barrier); err = clock_gettime(process_clock, &process_before); if (err) return 1; err = clock_gettime(my_thread_clock, &me_before); if (err) return 1; err = clock_gettime(th_clock, &th_before); if (err) return 1; sleeptime.tv_sec = 0; sleeptime.tv_nsec = 500000000; nanosleep(&sleeptime, NULL); err = clock_gettime(th_clock, &th_after); if (err) return 1; err = clock_gettime(my_thread_clock, &me_after); if (err) return 1; err = clock_gettime(process_clock, &process_after); if (err) return 1; diff = process_after.tv_nsec - process_before.tv_nsec; printf("process: before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n", process_before.tv_sec, process_before.tv_nsec, process_after.tv_sec, process_after.tv_nsec, diff); diff = th_after.tv_nsec - th_before.tv_nsec; printf("thread: before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n", th_before.tv_sec, th_before.tv_nsec, th_after.tv_sec, th_after.tv_nsec, diff); diff = me_after.tv_nsec - me_before.tv_nsec; printf("self: before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n", me_before.tv_sec, me_before.tv_nsec, me_after.tv_sec, me_after.tv_nsec, diff); return 0; } This is due to us using p->se.sum_exec_runtime in thread_group_cputime() where we iterate the thread group and sum all data. This does not take time since the last schedule operation (tick or otherwise) into account. We can cure this by using task_sched_runtime() at the cost of having to take locks. This also means we can (and must) do away with thread_group_sched_runtime() since the modified thread_group_cputime() is now more accurate and would deadlock when called from thread_group_sched_runtime(). Reported-by: David Miller Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1314874459.7945.22.camel@twins Cc: stable@kernel.org Signed-off-by: Thomas Gleixner --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 20b03bf94748..2909fe7a622d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1955,7 +1955,6 @@ static inline void disable_sched_clock_irqtime(void) {} extern unsigned long long task_sched_runtime(struct task_struct *task); -extern unsigned long long thread_group_sched_runtime(struct task_struct *task); /* sched_exec is called by processes performing an exec */ #ifdef CONFIG_SMP -- cgit v1.2.2 From 9962444f592a53c08ce439b6dc362bba7ce5fd7e Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 1 Sep 2011 22:26:25 +0300 Subject: usb: dwc3: omap: distinguish between SW and HW modes The OMAP wrapper allows us to either control internal OTG signals via SW or HW. Different boards might wish to use one or the other mode of operation. Let's have have that information passed via platform_data for now. After DT conversion is finished for OMAP, we can easily convert this to a DT attribute. Signed-off-by: Felipe Balbi --- include/linux/platform_data/dwc3-omap.h | 47 +++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/linux/platform_data/dwc3-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/dwc3-omap.h b/include/linux/platform_data/dwc3-omap.h new file mode 100644 index 000000000000..ada401244e0b --- /dev/null +++ b/include/linux/platform_data/dwc3-omap.h @@ -0,0 +1,47 @@ +/** + * dwc3-omap.h - OMAP Specific Glue layer, header. + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * All rights reserved. + * + * Author: Felipe Balbi + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2, as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +enum dwc3_omap_utmi_mode { + DWC3_OMAP_UTMI_MODE_UNKNOWN = 0, + DWC3_OMAP_UTMI_MODE_HW, + DWC3_OMAP_UTMI_MODE_SW, +}; + +struct dwc3_omap_data { + enum dwc3_omap_utmi_mode utmi_mode; +}; -- cgit v1.2.2 From 069af897f9a3f70248d4a7ba3d3d439f7cd66d92 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 5 Sep 2011 20:46:32 +0200 Subject: regmap: Provide device read and write map interface for merging Add the externally visible interface introduced by Lars-Peter's commit 6f3064 (regmap: Add support for device specific write and read flag masks) separately in order to allow merge into other subsystems for integration with drivers. Drivers relying on this feature will not be functional until they are merged with the implementation. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- include/linux/regmap.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index e2200f21c602..003c05349ae5 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -53,6 +53,12 @@ struct reg_default { * @reg_defaults: Power on reset values for registers (for use with * register cache support). * @num_reg_defaults: Number of elements in reg_defaults. + * + * @read_flag_mask: Mask to be set in the top byte of the register when doing + * a read. + * @write_flag_mask: Mask to be set in the top byte of the register when doing + * a write. If both read_flag_mask and write_flag_mask are + * empty the regmap_bus default masks are used. */ struct regmap_config { int reg_bits; @@ -66,6 +72,9 @@ struct regmap_config { unsigned int max_register; struct reg_default *reg_defaults; int num_reg_defaults; + + u8 read_flag_mask; + u8 write_flag_mask; }; typedef int (*regmap_hw_write)(struct device *dev, const void *data, -- cgit v1.2.2 From fc9ff9b7e3eaff3f49bc0fbbddfc1416212e888a Mon Sep 17 00:00:00 2001 From: "rongqing.li@windriver.com" Date: Tue, 6 Sep 2011 11:35:36 +0800 Subject: security: Fix a typo Fix a typo. Signed-off-by: Roy.Li Signed-off-by: James Morris --- include/linux/security.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index d9f7ec41ba51..a14c2d4b22cf 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1372,7 +1372,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @inode_getsecctx: * Returns a string containing all relavent security context information * - * @inode we wish to set the security context of. + * @inode we wish to get the security context of. * @ctx is a pointer in which to place the allocated security context. * @ctxlen points to the place to put the length of @ctx. * This is the main security structure. -- cgit v1.2.2 From 5dbe3040c74eef18e66951347eda05b153e69328 Mon Sep 17 00:00:00 2001 From: James Morris Date: Tue, 30 Aug 2011 13:48:53 +1000 Subject: security: sparse fix: Move security_fixup_op to security.h Fix sparse warning by moving declaraion to global header. Signed-off-by: James Morris --- include/linux/security.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index a14c2d4b22cf..19d8e04e1688 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1660,6 +1660,8 @@ struct security_operations { extern int security_init(void); extern int security_module_enable(struct security_operations *ops); extern int register_security(struct security_operations *ops); +extern void __init security_fixup_ops(struct security_operations *ops); + /* Security operations */ int security_ptrace_access_check(struct task_struct *child, unsigned int mode); -- cgit v1.2.2 From 684f741446f7a3108b4c167faf20214c42b7eeac Mon Sep 17 00:00:00 2001 From: Zhiwu Song Date: Tue, 30 Aug 2011 19:20:34 -0700 Subject: ARM: CSR: add rtc i/o bridge interface for SiRFprimaII The module is a bridge between the RTC clock domain and the CPU interface clock domain. ARM access the register of SYSRTC, GPSRTC and PWRC through this module. Signed-off-by: Zhiwu Song Signed-off-by: Barry Song Reviewed-by: Jamie Iles Acked-by: Arnd Bergmann --- include/linux/rtc/sirfsoc_rtciobrg.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 include/linux/rtc/sirfsoc_rtciobrg.h (limited to 'include/linux') diff --git a/include/linux/rtc/sirfsoc_rtciobrg.h b/include/linux/rtc/sirfsoc_rtciobrg.h new file mode 100644 index 000000000000..2c92e1c8e055 --- /dev/null +++ b/include/linux/rtc/sirfsoc_rtciobrg.h @@ -0,0 +1,18 @@ +/* + * RTC I/O Bridge interfaces for CSR SiRFprimaII + * ARM access the registers of SYSRTC, GPSRTC and PWRC through this module + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ +#ifndef _SIRFSOC_RTC_IOBRG_H_ +#define _SIRFSOC_RTC_IOBRG_H_ + +extern void sirfsoc_rtc_iobrg_besyncing(void); + +extern u32 sirfsoc_rtc_iobrg_readl(u32 addr); + +extern void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr); + +#endif -- cgit v1.2.2 From a0dc552951dcbb2b28a8a2ffb5fa966613e8c025 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:20 -0700 Subject: mtd: nand: remove NAND_BBT_SCANBYTE1AND6 option This patch reverts most of: commit 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options According to the discussion at: http://lists.infradead.org/pipermail/linux-mtd/2011-May/035696.html the NAND_BBT_SCANBYTE1AND6 flag, although technically valid, can break some existing ECC layouts that use the 6th byte in the OOB for ECC data. Furthermore, we apparently do not need to scan both bytes 1 and 6 in the OOB region of the devices under consideration; instead, we only need to scan one or the other. Thus, the NAND_BBT_SCANBYTE1AND6 flag is at best unnecessary and at worst a regression. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 57cc0e63714f..08ffa2193c07 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -98,8 +98,6 @@ struct nand_bbt_descr { #define NAND_BBT_SCAN2NDPAGE 0x00004000 /* Search good / bad pattern on the last page of the eraseblock */ #define NAND_BBT_SCANLASTPAGE 0x00008000 -/* Chip stores bad block marker on BOTH 1st and 6th bytes of OOB */ -#define NAND_BBT_SCANBYTE1AND6 0x00100000 /* The nand_bbt_descr was created dynamicaly and must be freed */ #define NAND_BBT_DYNAMICSTRUCT 0x00200000 /* The bad block table does not OOB for marker */ -- cgit v1.2.2 From 5fb1549dfc40f3b589dae560ea21535cdc5f64e0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:21 -0700 Subject: mtd: nand: separate chip options / bbt_options This patch handles the problems we've been having with using conflicting flags from nand.h and bbm.h in the same nand_chip.options field. We should try to separate these two spaces a little more clearly, and so I have added a bbt_options field to nand_chip. Important notes about nand_chip fields: * bbt_options field should contain ONLY flags from bbm.h. They should be able to pass safely to a nand_bbt_descr data structure. - BBT option flags start with the "NAND_BBT_" prefix. * options field should contian ONLY flags from nand.h. Ideally, they should not be involved in any BBT related options. - NAND chip option flags start with the "NAND_" prefix. * Every flag should have a nice comment explaining what the flag is. While this is not yet the case on all existing flags, please be sure to write one for new flags. Even better, you can help document the code better yourself! Please try to follow these conventions to make everyone's lives easier. Among the flags that are being moved to the new bbt_options field throughout various drivers, etc. are: * NAND_BBT_SCANLASTPAGE * NAND_BBT_SCAN2NDPAGE and there will be more to come. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c2b9ac4fbc4a..42f70e2d33af 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -449,6 +449,9 @@ struct nand_buffers { * @options: [BOARDSPECIFIC] various chip options. They can partly * be set to inform nand_scan about special functionality. * See the defines for further explanation. + * @bbt_options: [INTERN] bad block specific options. All options used + * here must come from bbm.h. By default, these options + * will be copied to the appropriate nand_bbt_descr's. * @badblockpos: [INTERN] position of the bad block marker in the oob * area. * @badblockbits: [INTERN] number of bits to left-shift the bad block @@ -509,6 +512,7 @@ struct nand_chip { int chip_delay; unsigned int options; + unsigned int bbt_options; int page_shift; int phys_erase_shift; -- cgit v1.2.2 From a40f73419f02e40555f692785ea1c1813d5b4c12 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:22 -0700 Subject: mtd: nand: consolidate redundant flash-based BBT flags This patch works with the following three flags from two headers (nand.h and bbm.h): (1) NAND_USE_FLASH_BBT (nand.h) (2) NAND_USE_FLASH_BBT_NO_OOB (nand.h) (3) NAND_BBT_NO_OOB (bbm.h) These flags are all related and interdependent, yet they were in different headers. Flag (2) is simply the combination of (1) and (3) and can be eliminated. This patch accomplishes the following: * eliminate NAND_USE_FLASH_BBT_NO_OOB (i.e., flag (2)) * move NAND_USE_FLASH_BBT (i.e., flag (1)) to bbm.h It's important to note that because (1) and (3) are now both found in bbm.h, they should NOT be used in the "nand_chip.options" field. I removed a small section from the mtdnand DocBook because it referes to NAND_USE_FLASH_BBT in nand.h, which has been moved to bbm.h. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 9 +++++++-- include/linux/mtd/nand.h | 12 ++---------- 2 files changed, 9 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 08ffa2193c07..7929514781ea 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -100,8 +100,13 @@ struct nand_bbt_descr { #define NAND_BBT_SCANLASTPAGE 0x00008000 /* The nand_bbt_descr was created dynamicaly and must be freed */ #define NAND_BBT_DYNAMICSTRUCT 0x00200000 -/* The bad block table does not OOB for marker */ -#define NAND_BBT_NO_OOB 0x00400000 +/* + * Use a flash based bad block table. By default, OOB identifier is saved in + * OOB area. This option is passed to the default bad block table function. + */ +#define NAND_USE_FLASH_BBT 0x00040000 +/* Do not store flash based bad block table in OOB area; store it in-band */ +#define NAND_BBT_NO_OOB 0x00080000 /* The maximum number of blocks to scan for a bbt */ #define NAND_BBT_SCAN_MAXBLOCKS 4 diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 42f70e2d33af..8a086d2cacf4 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -219,11 +219,6 @@ typedef enum { #define NAND_CHIPOPTIONS_MSK (0x0000ffff & ~NAND_NO_AUTOINCR) /* Non chip related options */ -/* - * Use a flash based bad block table. OOB identifier is saved in OOB area. - * This option is passed to the default bad block table function. - */ -#define NAND_USE_FLASH_BBT 0x00010000 /* This option skips the bbt scan during initialization. */ #define NAND_SKIP_BBTSCAN 0x00020000 /* @@ -233,11 +228,6 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00040000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00080000 -/* - * If passed additionally to NAND_USE_FLASH_BBT then BBT code will not touch - * the OOB area. - */ -#define NAND_USE_FLASH_BBT_NO_OOB 0x00800000 /* Create an empty BBT with no vendor information if the BBT is available */ #define NAND_CREATE_EMPTY_BBT 0x01000000 @@ -615,6 +605,7 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @partitions: mtd partition list * @chip_delay: R/B delay value in us * @options: Option flags, e.g. 16bit buswidth + * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH * @ecclayout: ecc layout info structure * @part_probe_types: NULL-terminated array of probe types * @set_parts: platform specific function to set partitions @@ -628,6 +619,7 @@ struct platform_nand_chip { struct nand_ecclayout *ecclayout; int chip_delay; unsigned int options; + unsigned int bbt_options; const char **part_probe_types; void (*set_parts)(uint64_t size, struct platform_nand_chip *chip); void *priv; -- cgit v1.2.2 From bb9ebd4e714385a2592a482845865ef2d58b2868 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:23 -0700 Subject: mtd: nand: rename NAND_USE_FLASH_BBT Recall the recently added prefix requirements: * "NAND_" for flags in nand.h, used in nand_chip.options * "NAND_BBT_" for flags in bbm.h, used in nand_chip.bbt_options or in nand_bbt_descr.options Thus, I am changing NAND_USE_FLASH_BBT to NAND_BBT_USE_FLASH. Again, this flag is found in bbm.h and so should NOT be used in the "nand_chip.options" field. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 7929514781ea..ff18c0850519 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -104,7 +104,7 @@ struct nand_bbt_descr { * Use a flash based bad block table. By default, OOB identifier is saved in * OOB area. This option is passed to the default bad block table function. */ -#define NAND_USE_FLASH_BBT 0x00040000 +#define NAND_BBT_USE_FLASH 0x00040000 /* Do not store flash based bad block table in OOB area; store it in-band */ #define NAND_BBT_NO_OOB 0x00080000 -- cgit v1.2.2 From b8f80684054ec8a3bcdf35dc9c76ddf629a36482 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:24 -0700 Subject: mtd: nand: move NAND_CREATE_EMPTY_BBT flag The NAND_CREATE_EMPTY_BBT flag was added by commit: 453281a973c10bce941b240d1c654d536623b16b mtd: nand: introduce NAND_CREATE_EMPTY_BBT This flag is not used within the kernel and not explained well, so I took the liberty to edit its comments. Also, this is a BBT-related flag (and closely tied with NAND_BBT_CREATE) so I'm moving it to bbm.h next to NAND_BBT_CREATE, thus requiring that we use the flag in nand_chip.bbt_options, *not* in nand_chip.options. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 7 +++++++ include/linux/mtd/nand.h | 2 -- 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index ff18c0850519..3cf4a8adc6af 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -86,6 +86,13 @@ struct nand_bbt_descr { #define NAND_BBT_VERSION 0x00000100 /* Create a bbt if none exists */ #define NAND_BBT_CREATE 0x00000200 +/* + * Create an empty BBT with no vendor information. Vendor's information may be + * unavailable, for example, if the NAND controller has a different data and OOB + * layout or if this information is already purged. Must be used in conjunction + * with NAND_BBT_CREATE. + */ +#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8a086d2cacf4..c1fca4fd35e7 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -228,8 +228,6 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00040000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00080000 -/* Create an empty BBT with no vendor information if the BBT is available */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- cgit v1.2.2 From 53d5d8885089b8abeb487392311ed18f897deb93 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:25 -0700 Subject: mtd: nand: rename CREATE_EMPTY bbt flag with proper prefix According to our new prefix rules, we should rename NAND_CREATE_EMPTY_BBT with a NAND_BBT prefix, i.e., NAND_BBT_CREATE_EMPTY. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 3cf4a8adc6af..0fa030ae29d6 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -92,7 +92,7 @@ struct nand_bbt_descr { * layout or if this information is already purged. Must be used in conjunction * with NAND_BBT_CREATE. */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 +#define NAND_BBT_CREATE_EMPTY 0x01000000 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ -- cgit v1.2.2 From b4dc53e16ff00c0edba3d3219e216475e68951b3 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:26 -0700 Subject: mtd: nand: renumber the reorganized flags in nand.h / bbm.h After several steps of rearrangement and consolidation, it is probably worth re-sequencing the numbers on some of our affected flags in nand.h and bbm.h. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 23 ++++++++++++----------- include/linux/mtd/nand.h | 6 +++--- 2 files changed, 15 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 0fa030ae29d6..57d6a8d4aa17 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -92,28 +92,29 @@ struct nand_bbt_descr { * layout or if this information is already purged. Must be used in conjunction * with NAND_BBT_CREATE. */ -#define NAND_BBT_CREATE_EMPTY 0x01000000 +#define NAND_BBT_CREATE_EMPTY 0x00000400 /* Search good / bad pattern through all pages of a block */ -#define NAND_BBT_SCANALLPAGES 0x00000400 +#define NAND_BBT_SCANALLPAGES 0x00000800 /* Scan block empty during good / bad block scan */ -#define NAND_BBT_SCANEMPTY 0x00000800 +#define NAND_BBT_SCANEMPTY 0x00001000 /* Write bbt if neccecary */ -#define NAND_BBT_WRITE 0x00001000 +#define NAND_BBT_WRITE 0x00002000 /* Read and write back block contents when writing bbt */ -#define NAND_BBT_SAVECONTENT 0x00002000 +#define NAND_BBT_SAVECONTENT 0x00004000 /* Search good / bad pattern on the first and the second page */ -#define NAND_BBT_SCAN2NDPAGE 0x00004000 +#define NAND_BBT_SCAN2NDPAGE 0x00008000 /* Search good / bad pattern on the last page of the eraseblock */ -#define NAND_BBT_SCANLASTPAGE 0x00008000 -/* The nand_bbt_descr was created dynamicaly and must be freed */ -#define NAND_BBT_DYNAMICSTRUCT 0x00200000 +#define NAND_BBT_SCANLASTPAGE 0x00010000 /* * Use a flash based bad block table. By default, OOB identifier is saved in * OOB area. This option is passed to the default bad block table function. */ -#define NAND_BBT_USE_FLASH 0x00040000 +#define NAND_BBT_USE_FLASH 0x00020000 /* Do not store flash based bad block table in OOB area; store it in-band */ -#define NAND_BBT_NO_OOB 0x00080000 +#define NAND_BBT_NO_OOB 0x00040000 + +/* The nand_bbt_descr was created dynamicaly and must be freed */ +#define NAND_BBT_DYNAMICSTRUCT 0x80000000 /* The maximum number of blocks to scan for a bbt */ #define NAND_BBT_SCAN_MAXBLOCKS 4 diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c1fca4fd35e7..4a43ffc535c9 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -220,14 +220,14 @@ typedef enum { /* Non chip related options */ /* This option skips the bbt scan during initialization. */ -#define NAND_SKIP_BBTSCAN 0x00020000 +#define NAND_SKIP_BBTSCAN 0x00010000 /* * This option is defined if the board driver allocates its own buffers * (e.g. because it needs them DMA-coherent). */ -#define NAND_OWN_BUFFERS 0x00040000 +#define NAND_OWN_BUFFERS 0x00020000 /* Chip may not exist, so silence any errors in scan */ -#define NAND_SCAN_SILENT_NODEV 0x00080000 +#define NAND_SCAN_SILENT_NODEV 0x00040000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- cgit v1.2.2 From 9eeff8243677b8bbfc17e8e606e965bb591a759d Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:27 -0700 Subject: mtd: nand: improve comment on NAND_BBT_DYNAMIC_STRUCT In an attempt to improve the documentation of the BBT code, I am expanding the comments I left in commit: 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/bbm.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 57d6a8d4aa17..c4eec228eef9 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -113,7 +113,11 @@ struct nand_bbt_descr { /* Do not store flash based bad block table in OOB area; store it in-band */ #define NAND_BBT_NO_OOB 0x00040000 -/* The nand_bbt_descr was created dynamicaly and must be freed */ +/* + * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr + * was allocated dynamicaly and must be freed in nand_release(). Has no meaning + * in nand_chip.bbt_options. + */ #define NAND_BBT_DYNAMICSTRUCT 0x80000000 /* The maximum number of blocks to scan for a bbt */ -- cgit v1.2.2 From 13e0fe49f676607688da7475c33540ec5dac53b5 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:14 +0400 Subject: mtd: drop physmap_configure physmap_configure() and physmap_set_partitions() have no users in kernel. Out of kernel users should have been converted to regular platform device long ago. Drop support for this obsolete API. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/physmap.h | 17 ----------------- 1 file changed, 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/physmap.h b/include/linux/mtd/physmap.h index e5f21d293c70..04e018160e2b 100644 --- a/include/linux/mtd/physmap.h +++ b/include/linux/mtd/physmap.h @@ -32,21 +32,4 @@ struct physmap_flash_data { struct mtd_partition *parts; }; -/* - * Board needs to specify the exact mapping during their setup time. - */ -void physmap_configure(unsigned long addr, unsigned long size, - int bankwidth, void (*set_vpp)(struct map_info *, int) ); - -/* - * Machines that wish to do flash partition may want to call this function in - * their setup routine. - * - * physmap_set_partitions(mypartitions, num_parts); - * - * Note that one can always override this hard-coded partition with - * command line partition (you need to enable CONFIG_MTD_CMDLINE_PARTS). - */ -void physmap_set_partitions(struct mtd_partition *parts, int num_parts); - #endif /* __LINUX_MTD_PHYSMAP__ */ -- cgit v1.2.2 From ae2dbad7e9ee2889e57b5ebac5a60d2d4f03439e Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:18 +0400 Subject: mtd: drop mtd_has_cmdlinepart() This function is unused now. Drop it. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 3a6f0372fc96..08c9c7b8b8e2 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -83,12 +83,6 @@ static inline int of_mtd_parse_partitions(struct device *dev, } #endif -#ifdef CONFIG_MTD_CMDLINE_PARTS -static inline int mtd_has_cmdlinepart(void) { return 1; } -#else -static inline int mtd_has_cmdlinepart(void) { return 0; } -#endif - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v1.2.2 From 1a31368bf92ef2a7da3ba379672c405bd2751df9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 6 Jun 2011 18:04:14 +0400 Subject: mtd: add a flags for partitions which should just leave smth. after them Add support for MTDPART_OFS_RETAIN: such partitions start at the current offset, take as much space as possible, but rain part->size bytes after the end of the partitions for other parts. Primarily this is intended for ts72xx arm platforms cleanup. Artem: tweaked the patch a bit Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 08c9c7b8b8e2..1431cf2609ed 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -24,7 +24,9 @@ * will extend to the end of the master MTD device. * offset: absolute starting position within the master MTD device; if * defined as MTDPART_OFS_APPEND, the partition will start where the - * previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block. + * previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block; + * if MTDPART_OFS_RETAIN, consume as much as possible, leaving size + * after the end of partition. * mask_flags: contains flags that have to be masked (removed) from the * master MTD flag set for the corresponding MTD partition. * For example, to force a read-only partition, simply adding @@ -42,6 +44,7 @@ struct mtd_partition { struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only) */ }; +#define MTDPART_OFS_RETAIN (-3) #define MTDPART_OFS_NXTBLK (-2) #define MTDPART_OFS_APPEND (-1) #define MTDPART_SIZ_FULL (0) -- cgit v1.2.2 From 0dc8626a17ab8dea9f1e34c7a5d667f5331b0ddc Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 6 Jun 2011 18:04:16 +0400 Subject: mtd: plat-nand: drop unused fields from platform_nand_data Drop now unused set_parts from struct platform_nand_data. Also, while we are at it, drop long unused priv field from platform_nand_data. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 4a43ffc535c9..0f239e714219 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -619,8 +619,6 @@ struct platform_nand_chip { unsigned int options; unsigned int bbt_options; const char **part_probe_types; - void (*set_parts)(uint64_t size, struct platform_nand_chip *chip); - void *priv; }; /* Keep gcc happy */ -- cgit v1.2.2 From 1c4c215cbdcbfd08183d82b2953591cd00564422 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Fri, 25 Mar 2011 22:26:25 +0300 Subject: mtd: add new API for handling MTD registration Lots (nearly all) mtd drivers contain nearly the similar code that calls parse_mtd_partitions, provides some platform-default values, if parsing fails, and registers mtd device. This is an aim to provide single implementation of this scenario: mtd_device_parse_register() which will handle all this parsing and defaults. Artem: amended comments Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 2541fb848daa..d28a241e7b55 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -327,6 +327,11 @@ struct mtd_partition; extern int mtd_device_register(struct mtd_info *master, const struct mtd_partition *parts, int nr_parts); +extern int mtd_device_parse_register(struct mtd_info *mtd, + const char **part_probe_types, + unsigned long origin, + const struct mtd_partition *defparts, + int defnr_parts); extern int mtd_device_unregister(struct mtd_info *master); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); extern int __get_mtd_device(struct mtd_info *mtd); -- cgit v1.2.2 From c7975330154af17aecc167b33ca866b6b3d98918 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Fri, 10 Jun 2011 18:18:28 +0400 Subject: mtd: abstract last MTD partition parser argument Encapsulate last MTD partition parser argument into a separate structure. Currently it holds only 'origin' field for RedBoot parser, but will be extended in future to contain at least device_node for OF devices. Amended commentary to make kerneldoc happy Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 3 ++- include/linux/mtd/partitions.h | 15 +++++++++++++-- 2 files changed, 15 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index d28a241e7b55..b2b454b45cb5 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -323,13 +323,14 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd) /* Kernel-side ioctl definitions */ struct mtd_partition; +struct mtd_part_parser_data; extern int mtd_device_register(struct mtd_info *master, const struct mtd_partition *parts, int nr_parts); extern int mtd_device_parse_register(struct mtd_info *mtd, const char **part_probe_types, - unsigned long origin, + struct mtd_part_parser_data *parser_data, const struct mtd_partition *defparts, int defnr_parts); extern int mtd_device_unregister(struct mtd_info *master); diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 1431cf2609ed..5fdb963a5035 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -52,6 +52,15 @@ struct mtd_partition { struct mtd_info; +/** + * struct mtd_part_parser_data - used to pass data to MTD partition parsers. + * @origin: for RedBoot, start address of MTD device + */ +struct mtd_part_parser_data { + unsigned long origin; +}; + + /* * Functions dealing with the various ways of partitioning the space */ @@ -60,13 +69,15 @@ struct mtd_part_parser { struct list_head list; struct module *owner; const char *name; - int (*parse_fn)(struct mtd_info *, struct mtd_partition **, unsigned long); + int (*parse_fn)(struct mtd_info *, struct mtd_partition **, + struct mtd_part_parser_data *); }; extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); extern int parse_mtd_partitions(struct mtd_info *master, const char **types, - struct mtd_partition **pparts, unsigned long origin); + struct mtd_partition **pparts, + struct mtd_part_parser_data *data); #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -- cgit v1.2.2 From d26c87d64eff271146b40b66c7de8cfeaf956707 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 21:32:33 +0400 Subject: mtd: prepare to convert of_mtd_parse_partitions to partition parser Prepare to convert of_mtd_parse_partitions() to usual partitions parser: 1) Register ofpart parser 2) Internally don't use passed device for error printing 3) Add device_node to mtd_part_parser_data struct 4) Move of_mtd_parse_partitions from __devinit to common text section 5) add ofpart to the default list of partition parsers Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 5fdb963a5035..ec60fd14670c 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -51,13 +51,16 @@ struct mtd_partition { struct mtd_info; +struct device_node; /** * struct mtd_part_parser_data - used to pass data to MTD partition parsers. * @origin: for RedBoot, start address of MTD device + * @of_node: for OF parsers, device node containing partitioning information */ struct mtd_part_parser_data { unsigned long origin; + struct device_node *of_node; }; @@ -85,7 +88,7 @@ struct device; struct device_node; #ifdef CONFIG_MTD_OF_PARTS -int __devinit of_mtd_parse_partitions(struct device *dev, +int of_mtd_parse_partitions(struct device *dev, struct device_node *node, struct mtd_partition **pparts); #else -- cgit v1.2.2 From 628376fb5369c353680f03f47705b1437ff8de80 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:05:33 +0400 Subject: mtd: drop of_mtd_parse_partitions() All users have been converted to call of_mtd_parse_partitions through parse_mtd_partitions() multiplexer. Drop obsolete API. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index ec60fd14670c..a8a961a8c8ff 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -84,22 +84,6 @@ extern int parse_mtd_partitions(struct mtd_info *master, const char **types, #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -struct device; -struct device_node; - -#ifdef CONFIG_MTD_OF_PARTS -int of_mtd_parse_partitions(struct device *dev, - struct device_node *node, - struct mtd_partition **pparts); -#else -static inline int of_mtd_parse_partitions(struct device *dev, - struct device_node *node, - struct mtd_partition **pparts) -{ - return 0; -} -#endif - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v1.2.2 From e1c10243df92822954b9b5e04d12dd2f23a39652 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 22 Jun 2011 14:16:49 +0900 Subject: mtd: OneNAND: Detect the correct NOP when 4KiB pagesize There are two different 4KiB pagesize chips KFM4G16Q4M series have NOP 4 with version ID 0x0131 But KFM4G16Q5M has NOP 1 with versoin ID 0x013e Note that Q5M means that it has NOP 1. Signed-off-by: Kyungmin Park Signed-off-by: Artem Bityutskiy --- include/linux/mtd/onenand.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 52b6f187bf49..4596503c9da9 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -184,6 +184,9 @@ struct onenand_chip { #define ONENAND_IS_CACHE_PROGRAM(this) \ (this->options & ONENAND_HAS_CACHE_PROGRAM) +#define ONENAND_IS_NOP_1(this) \ + (this->options & ONENAND_HAS_NOP_1) + /* Check byte access in OneNAND */ #define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1) @@ -195,6 +198,7 @@ struct onenand_chip { #define ONENAND_HAS_2PLANE (0x0004) #define ONENAND_HAS_4KB_PAGE (0x0008) #define ONENAND_HAS_CACHE_PROGRAM (0x0010) +#define ONENAND_HAS_NOP_1 (0x0020) #define ONENAND_SKIP_UNLOCK_CHECK (0x0100) #define ONENAND_PAGEBUF_ALLOC (0x1000) #define ONENAND_OOBBUF_ALLOC (0x2000) -- cgit v1.2.2 From 3165f44bcd4b987cbcc694af739ab955b561e05b Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:23:08 +0400 Subject: mtd: hide parse_mtd_partitions There is no need to export parse_mtd_partitions() now , as it's fully handled by registration functions. So move the definition to private header and remove respective EXPORT_SYMBOL_GPL. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index a8a961a8c8ff..c98d6b858c2c 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -78,9 +78,6 @@ struct mtd_part_parser { extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); -extern int parse_mtd_partitions(struct mtd_info *master, const char **types, - struct mtd_partition **pparts, - struct mtd_part_parser_data *data); #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -- cgit v1.2.2 From 953b3bd1911260b8acd8f35fa26440c1a943e59a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:26:14 +0400 Subject: mtd: remove put_partition_parser() from public header There is no need to pollute public header with a definition private to mtdpart.c. Move it from mtd/partitions.h to mtdpart.c Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/partitions.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index c98d6b858c2c..2475228c1158 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -79,8 +79,6 @@ struct mtd_part_parser { extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); -#define put_partition_parser(p) do { module_put((p)->owner); } while(0) - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v1.2.2 From 15c60a508ab3393e68b7ccb3528981ccacf9c0f9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:33:15 +0400 Subject: mtd: drop mtd_device_register mtd_device_register() is a limited version of mtd_device_parse_register. Replace it with macro calling mtd_device_parse_register(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index b2b454b45cb5..67774f9d57cc 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -325,14 +325,13 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd) struct mtd_partition; struct mtd_part_parser_data; -extern int mtd_device_register(struct mtd_info *master, - const struct mtd_partition *parts, - int nr_parts); extern int mtd_device_parse_register(struct mtd_info *mtd, const char **part_probe_types, struct mtd_part_parser_data *parser_data, const struct mtd_partition *defparts, int defnr_parts); +#define mtd_device_register(master, parts, nr_parts) \ + mtd_device_parse_register(master, NULL, NULL, parts, nr_parts) extern int mtd_device_unregister(struct mtd_info *master); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); extern int __get_mtd_device(struct mtd_info *mtd); -- cgit v1.2.2 From 7854d3f7495b11be1570cd3e2318674d8f9ed797 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Thu, 23 Jun 2011 14:12:08 -0700 Subject: mtd: spelling, capitalization, uniformity Therefor -> Therefore [Intern], [Internal] -> [INTERN] [REPLACABLE] -> [REPLACEABLE] syndrom, syndom -> syndrome ecc -> ECC buswith -> buswidth endianess -> endianness dont -> don't occures -> occurs independend -> independent wihin -> within erease -> erase blockes -> blocks ... Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 2 +- include/linux/mtd/nand.h | 50 ++++++++++++++++++++++++------------------------ 2 files changed, 26 insertions(+), 26 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 67774f9d57cc..62d56f933b87 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -172,7 +172,7 @@ struct mtd_info { const char *name; int index; - /* ecc layout structure pointer - read only ! */ + /* ECC layout structure pointer - read only! */ struct nand_ecclayout *ecclayout; /* Data for variable erase regions. If numeraseregions is zero, diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0f239e714219..877fbbda02cd 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -42,10 +42,10 @@ extern void nand_release(struct mtd_info *mtd); /* Internal helper for board drivers which need to override command function */ extern void nand_wait_ready(struct mtd_info *mtd); -/* locks all blockes present in the device */ +/* locks all blocks present in the device */ extern int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); -/* unlocks specified locked blockes */ +/* unlocks specified locked blocks */ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); /* The maximum number of NAND chips in an array */ @@ -150,7 +150,7 @@ typedef enum { #define NAND_ECC_READ 0 /* Reset Hardware ECC for write */ #define NAND_ECC_WRITE 1 -/* Enable Hardware ECC before syndrom is read back from flash */ +/* Enable Hardware ECC before syndrome is read back from flash */ #define NAND_ECC_READSYN 2 /* Bit mask for flags passed to do_nand_read_ecc */ @@ -163,7 +163,7 @@ typedef enum { */ /* Chip can not auto increment pages */ #define NAND_NO_AUTOINCR 0x00000001 -/* Buswitdh is 16 bit */ +/* Buswidth is 16 bit */ #define NAND_BUSWIDTH_16 0x00000002 /* Device supports partial programming without padding */ #define NAND_NO_PADDING 0x00000004 @@ -319,26 +319,26 @@ struct nand_hw_control { }; /** - * struct nand_ecc_ctrl - Control structure for ecc - * @mode: ecc mode - * @steps: number of ecc steps per page - * @size: data bytes per ecc step - * @bytes: ecc bytes per step - * @total: total number of ecc bytes per page - * @prepad: padding information for syndrome based ecc generators - * @postpad: padding information for syndrome based ecc generators + * struct nand_ecc_ctrl - Control structure for ECC + * @mode: ECC mode + * @steps: number of ECC steps per page + * @size: data bytes per ECC step + * @bytes: ECC bytes per step + * @total: total number of ECC bytes per page + * @prepad: padding information for syndrome based ECC generators + * @postpad: padding information for syndrome based ECC generators * @layout: ECC layout control struct pointer - * @priv: pointer to private ecc control data - * @hwctl: function to control hardware ecc generator. Must only + * @priv: pointer to private ECC control data + * @hwctl: function to control hardware ECC generator. Must only * be provided if an hardware ECC is available - * @calculate: function for ecc calculation or readback from ecc hardware - * @correct: function for ecc correction, matching to ecc generator (sw/hw) + * @calculate: function for ECC calculation or readback from ECC hardware + * @correct: function for ECC correction, matching to ECC generator (sw/hw) * @read_page_raw: function to read a raw page without ECC * @write_page_raw: function to write a raw page without ECC - * @read_page: function to read a page according to the ecc generator + * @read_page: function to read a page according to the ECC generator * requirements. * @read_subpage: function to read parts of the page covered by ECC. - * @write_page: function to write a page according to the ecc generator + * @write_page: function to write a page according to the ECC generator * requirements. * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data @@ -376,8 +376,8 @@ struct nand_ecc_ctrl { /** * struct nand_buffers - buffer structure for read/write - * @ecccalc: buffer for calculated ecc - * @ecccode: buffer for ecc read from flash + * @ecccalc: buffer for calculated ECC + * @ecccode: buffer for ECC read from flash * @databuf: buffer for data - dynamically sized * * Do not change the order of buffers. databuf and oobrbuf must be in @@ -410,7 +410,7 @@ struct nand_buffers { * mtd->oobsize, mtd->writesize and so on. * @id_data contains the 8 bytes values of NAND_CMD_READID. * Return with the bus width. - * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing + * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accessing * device ready/busy line. If set to NULL no access to * ready/busy is available and the ready/busy information * is read from the chip status register. @@ -418,7 +418,7 @@ struct nand_buffers { * commands to the chip. * @waitfunc: [REPLACEABLE] hardwarespecific function for wait on * ready. - * @ecc: [BOARDSPECIFIC] ecc control ctructure + * @ecc: [BOARDSPECIFIC] ECC control structure * @buffers: buffer structure for read/write * @hwcontrol: platform-specific hardware control structure * @ops: oob operation operands @@ -455,7 +455,7 @@ struct nand_buffers { * non 0 if ONFI supported. * @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is * supported, 0 otherwise. - * @ecclayout: [REPLACEABLE] the default ecc placement scheme + * @ecclayout: [REPLACEABLE] the default ECC placement scheme * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash * lookup. @@ -463,7 +463,7 @@ struct nand_buffers { * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial * bad block scan. * @controller: [REPLACEABLE] a pointer to a hardware controller - * structure which is shared among multiple independend + * structure which is shared among multiple independent * devices. * @priv: [OPTIONAL] pointer to private chip date * @errstat: [OPTIONAL] hardware specific function to perform @@ -604,7 +604,7 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @chip_delay: R/B delay value in us * @options: Option flags, e.g. 16bit buswidth * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH - * @ecclayout: ecc layout info structure + * @ecclayout: ECC layout info structure * @part_probe_types: NULL-terminated array of probe types * @set_parts: platform specific function to set partitions * @priv: hardware controller specific settings -- cgit v1.2.2 From b4ca74738ab6c9ed8190b06cd7bf785dc98c640e Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Fri, 1 Jul 2011 13:51:15 +0200 Subject: mtd: plat-nand: Fixup kerneldoc for struct platform_nand_chip The set_parts and priv members of struct platform_nand_chip where removed in commit c36a6ef3845262ade529afb9f458738b1f196f83 but the kerneldoc wasn't updated. Signed-off-by: Tobias Klauser Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 877fbbda02cd..6d5696876b3f 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -606,8 +606,6 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH * @ecclayout: ECC layout info structure * @part_probe_types: NULL-terminated array of probe types - * @set_parts: platform specific function to set partitions - * @priv: hardware controller specific settings */ struct platform_nand_chip { int nr_chips; -- cgit v1.2.2 From 87ed114bb22bc65fce59c709e67599c1940efc7f Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:12 -0700 Subject: mtd: remove CONFIG_MTD_DEBUG Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 62d56f933b87..68ea22963a33 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -360,27 +360,4 @@ void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); void mtd_erase_callback(struct erase_info *instr); -/* - * Debugging macro and defines - */ -#define MTD_DEBUG_LEVEL0 (0) /* Quiet */ -#define MTD_DEBUG_LEVEL1 (1) /* Audible */ -#define MTD_DEBUG_LEVEL2 (2) /* Loud */ -#define MTD_DEBUG_LEVEL3 (3) /* Noisy */ - -#ifdef CONFIG_MTD_DEBUG -#define DEBUG(n, args...) \ - do { \ - if (n <= CONFIG_MTD_DEBUG_VERBOSE) \ - printk(KERN_INFO args); \ - } while(0) -#else /* CONFIG_MTD_DEBUG */ -#define DEBUG(n, args...) \ - do { \ - if (0) \ - printk(KERN_INFO args); \ - } while(0) - -#endif /* CONFIG_MTD_DEBUG */ - #endif /* __MTD_MTD_H__ */ -- cgit v1.2.2 From 32c8db8f622a4cb8ea9d571d462580f7137babbb Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:35 -0700 Subject: mtd: nand: fix spelling error (date => data) Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 6d5696876b3f..85fef68a379d 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -465,7 +465,7 @@ struct nand_buffers { * @controller: [REPLACEABLE] a pointer to a hardware controller * structure which is shared among multiple independent * devices. - * @priv: [OPTIONAL] pointer to private chip date + * @priv: [OPTIONAL] pointer to private chip data * @errstat: [OPTIONAL] hardware specific function to perform * additional error status checks (determine if errors are * correctable). -- cgit v1.2.2 From e2e24e8ebf0e96571fbbac95c215df6a2cebbc5b Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:36 -0700 Subject: mtd: style fixups in multi-line comment, indentation Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 68ea22963a33..ff7bae08c5e0 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -33,17 +33,19 @@ #define MTD_CHAR_MAJOR 90 #define MTD_BLOCK_MAJOR 31 -#define MTD_ERASE_PENDING 0x01 +#define MTD_ERASE_PENDING 0x01 #define MTD_ERASING 0x02 #define MTD_ERASE_SUSPEND 0x04 -#define MTD_ERASE_DONE 0x08 -#define MTD_ERASE_FAILED 0x10 +#define MTD_ERASE_DONE 0x08 +#define MTD_ERASE_FAILED 0x10 #define MTD_FAIL_ADDR_UNKNOWN -1LL -/* If the erase fails, fail_addr might indicate exactly which block failed. If - fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not - specific to any particular block. */ +/* + * If the erase fails, fail_addr might indicate exactly which block failed. If + * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level + * or was not specific to any particular block. + */ struct erase_info { struct mtd_info *mtd; uint64_t addr; @@ -60,7 +62,7 @@ struct erase_info { }; struct mtd_erase_region_info { - uint64_t offset; /* At which this region starts, from the beginning of the MTD */ + uint64_t offset; /* At which this region starts, from the beginning of the MTD */ uint32_t erasesize; /* For this region */ uint32_t numblocks; /* Number of blocks of erasesize in this region */ unsigned long *lockmap; /* If keeping bitmap of locks */ -- cgit v1.2.2 From 9ce244b3fb416ce6600e05612ac46b9692dcc638 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:37 -0700 Subject: mtd: support writing OOB without ECC This fixes issues with `nandwrite -n -o' and the MEMWRITEOOB[64] ioctls on hardware that writes ECC when writing OOB. The problem arises as follows: `nandwrite -n' can write page data to flash without applying ECC, but when used with the `-o' option, ECC is applied (incorrectly), contrary to the `--noecc' option. I found that this is the case because my hardware computes and writes ECC data to flash upon either OOB write or page write. Thus, to support a proper "no ECC" write, my driver must know when we're performing a raw OOB write vs. a normal ECC OOB write. However, MTD does not pass any raw mode information to the write_oob functions. This patch addresses the problems by: 1) Passing MTD_OOB_RAW down to lower layers, instead of just defaulting to MTD_OOB_PLACE 2) Handling MTD_OOB_RAW within the NAND layer's `nand_do_write_oob' 3) Adding a new (replaceable) function pointer in struct ecc_ctrl; this function should support writing OOB without ECC data. Current hardware often can use the same OOB write function when writing either with or without ECC This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris Cc: Jim Quinlan Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 85fef68a379d..5f3fdd9877b7 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -340,6 +340,7 @@ struct nand_hw_control { * @read_subpage: function to read parts of the page covered by ECC. * @write_page: function to write a page according to the ECC generator * requirements. + * @write_oob_raw: function to write chip OOB data without ECC * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data */ @@ -368,6 +369,8 @@ struct nand_ecc_ctrl { uint32_t offs, uint32_t len, uint8_t *buf); void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf); + int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page); int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd); int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip, -- cgit v1.2.2 From e9195edc59f33e9cabdd32a2959e927806670f45 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:43 -0700 Subject: mtd: nand: document nand_chip.oob_poi Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 5f3fdd9877b7..c7113a9cd66d 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -431,7 +431,8 @@ struct nand_buffers { * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring * data from array to read regs (tR). * @state: [INTERN] the current state of the NAND device - * @oob_poi: poison value buffer + * @oob_poi: "poison value buffer," used for laying out OOB data + * before writing * @page_shift: [INTERN] number of address bits in a page (column * address bits). * @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock -- cgit v1.2.2 From c46f6483d21e93400e4a110de7902830173d53b0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:38 -0700 Subject: mtd: support reading OOB without ECC This fixes issues with `nanddump -n' and the MEMREADOOB[64] ioctls on hardware that performs error correction when reading only OOB data. A driver for such hardware needs to know when we're doing a RAW vs. a normal write, but mtd_do_read_oob does not pass such information to the lower layers (e.g., NAND). We should pass MTD_OOB_RAW or MTD_OOB_PLACE based on the MTD file mode. For now, most drivers can get away with just setting: chip->ecc.read_oob_raw = chip->ecc.read_oob This is done by default; but for systems that behave as described above, you must supply your own replacement function. This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris Cc: Jim Quinlan Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c7113a9cd66d..0b3d464cba13 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -341,6 +341,7 @@ struct nand_hw_control { * @write_page: function to write a page according to the ECC generator * requirements. * @write_oob_raw: function to write chip OOB data without ECC + * @read_oob_raw: function to read chip OOB data without ECC * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data */ @@ -371,6 +372,8 @@ struct nand_ecc_ctrl { const uint8_t *buf); int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, int page); + int (*read_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd); int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd); int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip, -- cgit v1.2.2 From 905c6bcdb42616da717a9bd6c0c5870dbd90b09e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:39 -0700 Subject: mtd: move mtd_oob_mode_t to shared kernel/user space We will want to use the MTD_OOB_{PLACE,AUTO,RAW} modes in user-space applications through the introduction of new ioctls, so we should make this enum a shared type. This enum is now anonymous. Artem: tweaked the patch. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index ff7bae08c5e0..6882cd968a3e 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -68,20 +68,6 @@ struct mtd_erase_region_info { unsigned long *lockmap; /* If keeping bitmap of locks */ }; -/* - * oob operation modes - * - * MTD_OOB_PLACE: oob data are placed at the given offset - * MTD_OOB_AUTO: oob data are automatically placed at the free areas - * which are defined by the ecclayout - * MTD_OOB_RAW: mode to read oob and data without doing ECC checking - */ -typedef enum { - MTD_OOB_PLACE, - MTD_OOB_AUTO, - MTD_OOB_RAW, -} mtd_oob_mode_t; - /** * struct mtd_oob_ops - oob operation operands * @mode: operation mode @@ -102,7 +88,7 @@ typedef enum { * OOB area. */ struct mtd_oob_ops { - mtd_oob_mode_t mode; + unsigned int mode; size_t len; size_t retlen; size_t ooblen; -- cgit v1.2.2 From 0612b9ddc2eeda014dd805c87c752b342d8f80f0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:40 -0700 Subject: mtd: rename MTD_OOB_* to MTD_OPS_* These modes are not necessarily for OOB only. Particularly, MTD_OOB_RAW affected operations on in-band page data as well. To clarify these options and to emphasize that their effect is applied per-operation, we change the primary prefix to MTD_OPS_. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 6882cd968a3e..c2047b85691d 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -79,7 +79,7 @@ struct mtd_erase_region_info { * @ooblen: number of oob bytes to write/read * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OOB_PLACE) + * mode = MTD_OPS_PLACE_OOB) * @datbuf: data buffer - if NULL only oob data are read/written * @oobbuf: oob data buffer * -- cgit v1.2.2 From 4180f24a7bff3aa7978e3785d0edd5dcc4af9049 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:44 -0700 Subject: mtd: document ABI We're missing a lot of important documentation in include/mtd/mtd-abi.h: * add a simple description of each ioctl (feel free to expand!) * give full explanations of recently added and modified operations * explain the usage of "RAW" that appear in different modes and types of operations * fix some comment style along the way Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index c2047b85691d..37d082793f62 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -79,7 +79,7 @@ struct mtd_erase_region_info { * @ooblen: number of oob bytes to write/read * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OPS_PLACE_OOB) + * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW) * @datbuf: data buffer - if NULL only oob data are read/written * @oobbuf: oob data buffer * -- cgit v1.2.2 From 4a89ff885ff9f64ea62669100766e10e4e257c6e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:45 -0700 Subject: mtd: nand: kill member `ops' of `struct nand_chip' The nand_chip.ops field is a struct that is passed around globally with no particular reason. Every time it is used, it could just as easily be replaced with a local struct that is updated on each operation. So make it local. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0b3d464cba13..904131bab501 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -427,7 +427,6 @@ struct nand_buffers { * @ecc: [BOARDSPECIFIC] ECC control structure * @buffers: buffer structure for read/write * @hwcontrol: platform-specific hardware control structure - * @ops: oob operation operands * @erase_cmd: [INTERN] erase command write function, selectable due * to AND support. * @scan_bbt: [REPLACEABLE] function to scan bad block table @@ -535,8 +534,6 @@ struct nand_chip { struct nand_buffers *buffers; struct nand_hw_control hwcontrol; - struct mtd_oob_ops ops; - uint8_t *bbt; struct nand_bbt_descr *bbt_td; struct nand_bbt_descr *bbt_md; -- cgit v1.2.2 From 60f96b41f71d2a13d1c0a457b8b77958f77142d1 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 9 Sep 2011 13:59:35 +0530 Subject: genirq: Add IRQCHIP_SKIP_SET_WAKE flag Some irq chips need the irq_set_wake() functionality, but do not require a irq_set_wake() callback. Instead of forcing an empty callback to be implemented add a flag which notes this fact. Check for the flag in set_irq_wake_real() and return success when set. Signed-off-by: Santosh Shilimkar Cc: Thomas Gleixner --- include/linux/irq.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 59517300a315..73e31abeba1c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -336,12 +336,14 @@ struct irq_chip { * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path * IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks * when irq enabled + * IRQCHIP_SKIP_SET_WAKE: Skip chip.irq_set_wake(), for this irq chip */ enum { IRQCHIP_SET_TYPE_MASKED = (1 << 0), IRQCHIP_EOI_IF_HANDLED = (1 << 1), IRQCHIP_MASK_ON_SUSPEND = (1 << 2), IRQCHIP_ONOFFLINE_ENABLED = (1 << 3), + IRQCHIP_SKIP_SET_WAKE = (1 << 4), }; /* This include will go away once we isolated irq_desc usage to core code */ -- cgit v1.2.2 From 166e1f901b01872e8b70733a3f2e2c6980389cf8 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 12 Sep 2011 12:08:27 +0200 Subject: block: export __make_request Avoid the hacks need for request based device mappers currently by simply exporting the symbol instead of trying to get it through the back door. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 0e67c45b3bc9..e9c3d9b07630 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -675,6 +675,8 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t, struct scsi_ioctl_command __user *); +extern int __make_request(struct request_queue *q, struct bio *bio); + /* * A queue has just exitted congestion. Note this in the global counter of * congested queues, and wake up anyone who was waiting for requests to be -- cgit v1.2.2 From c20e8de27fef9f59869c81c288ad6cf28200e00c Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 12 Sep 2011 12:03:37 +0200 Subject: block: rename __make_request() to blk_queue_bio() Now that it's exported, lets put it in a more sane namespace. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e9c3d9b07630..085f95414c7f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -675,7 +675,7 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t, struct scsi_ioctl_command __user *); -extern int __make_request(struct request_queue *q, struct bio *bio); +extern int blk_queue_bio(struct request_queue *q, struct bio *bio); /* * A queue has just exitted congestion. Note this in the global counter of -- cgit v1.2.2 From 5a7bbad27a410350e64a2d7f5ec18fc73836c14f Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 12 Sep 2011 12:12:01 +0200 Subject: block: remove support for bio remapping from ->make_request There is very little benefit in allowing to let a ->make_request instance update the bios device and sector and loop around it in __generic_make_request when we can archive the same through calling generic_make_request from the driver and letting the loop in generic_make_request handle it. Note that various drivers got the return value from ->make_request and returned non-zero values for errors. Signed-off-by: Christoph Hellwig Acked-by: NeilBrown Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 085f95414c7f..c712efdafc3f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -193,7 +193,7 @@ struct request_pm_state #include typedef void (request_fn_proc) (struct request_queue *q); -typedef int (make_request_fn) (struct request_queue *q, struct bio *bio); +typedef void (make_request_fn) (struct request_queue *q, struct bio *bio); typedef int (prep_rq_fn) (struct request_queue *, struct request *); typedef void (unprep_rq_fn) (struct request_queue *, struct request *); @@ -675,7 +675,7 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t, struct scsi_ioctl_command __user *); -extern int blk_queue_bio(struct request_queue *q, struct bio *bio); +extern void blk_queue_bio(struct request_queue *q, struct bio *bio); /* * A queue has just exitted congestion. Note this in the global counter of -- cgit v1.2.2 From ec484608c5885931c432e99ecfd2772288cd993c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 16:09:17 +0200 Subject: locking, kprobes: Annotate the hash locks and kretprobe.lock as raw The kprobe locks can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/kprobes.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index dd7c12e875bc..dce6e4dbeda7 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -181,7 +181,7 @@ struct kretprobe { int nmissed; size_t data_size; struct hlist_head free_instances; - spinlock_t lock; + raw_spinlock_t lock; }; struct kretprobe_instance { -- cgit v1.2.2 From f032a450812f6c7edd532772cc7c48091bca9f27 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 16:21:48 +0200 Subject: locking, percpu_counter: Annotate ::lock as raw The percpu_counter::lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/percpu_counter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h index 5edc9014263a..b9df9ed1adc0 100644 --- a/include/linux/percpu_counter.h +++ b/include/linux/percpu_counter.h @@ -16,7 +16,7 @@ #ifdef CONFIG_SMP struct percpu_counter { - spinlock_t lock; + raw_spinlock_t lock; s64 count; #ifdef CONFIG_HOTPLUG_CPU struct list_head list; /* All percpu_counters are on a list */ -- cgit v1.2.2 From 740969f91e950b64a18fdd0a25164cdee042abf0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 16:43:30 +0200 Subject: locking, lib/proportions: Annotate prop_local_percpu::lock as raw The prop_local_percpu::lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/proportions.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/proportions.h b/include/linux/proportions.h index cf793bbbd05e..ef35bb73f69b 100644 --- a/include/linux/proportions.h +++ b/include/linux/proportions.h @@ -58,7 +58,7 @@ struct prop_local_percpu { */ int shift; unsigned long period; - spinlock_t lock; /* protect the snapshot state */ + raw_spinlock_t lock; /* protect the snapshot state */ }; int prop_local_init_percpu(struct prop_local_percpu *pl); @@ -106,11 +106,11 @@ struct prop_local_single { */ unsigned long period; int shift; - spinlock_t lock; /* protect the snapshot state */ + raw_spinlock_t lock; /* protect the snapshot state */ }; #define INIT_PROP_LOCAL_SINGLE(name) \ -{ .lock = __SPIN_LOCK_UNLOCKED(name.lock), \ +{ .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \ } int prop_local_init_single(struct prop_local_single *pl); -- cgit v1.2.2 From 07354eb1a74d1e1ece29f8bafe0b46e8c77a95ef Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 17:50:36 +0200 Subject: locking, printk: Annotate logbuf_lock as raw The logbuf_lock lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner [ merged and fixed it ] Signed-off-by: Ingo Molnar --- include/linux/ratelimit.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ratelimit.h b/include/linux/ratelimit.h index 2f007157fab9..e11ccb4cf48d 100644 --- a/include/linux/ratelimit.h +++ b/include/linux/ratelimit.h @@ -8,7 +8,7 @@ #define DEFAULT_RATELIMIT_BURST 10 struct ratelimit_state { - spinlock_t lock; /* protect the state */ + raw_spinlock_t lock; /* protect the state */ int interval; int burst; @@ -20,7 +20,7 @@ struct ratelimit_state { #define DEFINE_RATELIMIT_STATE(name, interval_init, burst_init) \ \ struct ratelimit_state name = { \ - .lock = __SPIN_LOCK_UNLOCKED(name.lock), \ + .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \ .interval = interval_init, \ .burst = burst_init, \ } @@ -28,7 +28,7 @@ struct ratelimit_state { static inline void ratelimit_state_init(struct ratelimit_state *rs, int interval, int burst) { - spin_lock_init(&rs->lock); + raw_spin_lock_init(&rs->lock); rs->interval = interval; rs->burst = burst; rs->printed = 0; -- cgit v1.2.2 From ee30a7b2fc072f139dac44826860d2c1f422137c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 18:56:56 +0200 Subject: locking, sched: Annotate thread_group_cputimer as raw The thread_group_cputimer lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/init_task.h | 2 +- include/linux/sched.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index d14e058aaeed..08ffab01e76c 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -42,7 +42,7 @@ extern struct fs_struct init_fs; .cputimer = { \ .cputime = INIT_CPUTIME, \ .running = 0, \ - .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ + .lock = __RAW_SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ }, \ .cred_guard_mutex = \ __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ac2c0578e0f..e672236c08e0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -510,7 +510,7 @@ struct task_cputime { struct thread_group_cputimer { struct task_cputime cputime; int running; - spinlock_t lock; + raw_spinlock_t lock; }; #include @@ -2566,7 +2566,7 @@ void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times); static inline void thread_group_cputime_init(struct signal_struct *sig) { - spin_lock_init(&sig->cputimer.lock); + raw_spin_lock_init(&sig->cputimer.lock); } /* -- cgit v1.2.2 From 8292c9e15c3b069459794a04f5e2cf0d5665ddc4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 24 Feb 2010 09:50:22 +0100 Subject: locking, semaphores: Annotate inner lock as raw There is no reason to have the spin_lock protecting the semaphore preemptible on -rt. Annotate it as a raw_spinlock. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. ( On rt this also solves lockdep complaining about the rt_mutex.wait_lock being not initialized. ) Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/semaphore.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/semaphore.h b/include/linux/semaphore.h index 39fa04966aa8..dc368b8ce215 100644 --- a/include/linux/semaphore.h +++ b/include/linux/semaphore.h @@ -14,14 +14,14 @@ /* Please don't access any members of this structure directly */ struct semaphore { - spinlock_t lock; + raw_spinlock_t lock; unsigned int count; struct list_head wait_list; }; #define __SEMAPHORE_INITIALIZER(name, n) \ { \ - .lock = __SPIN_LOCK_UNLOCKED((name).lock), \ + .lock = __RAW_SPIN_LOCK_UNLOCKED((name).lock), \ .count = n, \ .wait_list = LIST_HEAD_INIT((name).wait_list), \ } -- cgit v1.2.2 From ddb6c9b58a19edcfac93ac670b066c836ff729f1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 24 Feb 2010 09:54:54 +0100 Subject: locking, rwsem: Annotate inner lock as raw There is no reason to allow the lock protecting rwsems (the ownerless variant) to be preemptible on -rt. Convert it to raw. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/rwsem-spinlock.h | 2 +- include/linux/rwsem.h | 10 ++++++---- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h index 34701241b673..d5b13bc07a0b 100644 --- a/include/linux/rwsem-spinlock.h +++ b/include/linux/rwsem-spinlock.h @@ -22,7 +22,7 @@ */ struct rw_semaphore { __s32 activity; - spinlock_t wait_lock; + raw_spinlock_t wait_lock; struct list_head wait_list; #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map dep_map; diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 6a6741440cb7..63d406554391 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -25,7 +25,7 @@ struct rw_semaphore; /* All arch specific implementations share the same struct */ struct rw_semaphore { long count; - spinlock_t wait_lock; + raw_spinlock_t wait_lock; struct list_head wait_list; #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map dep_map; @@ -56,9 +56,11 @@ static inline int rwsem_is_locked(struct rw_semaphore *sem) # define __RWSEM_DEP_MAP_INIT(lockname) #endif -#define __RWSEM_INITIALIZER(name) \ - { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED(name.wait_lock), \ - LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) } +#define __RWSEM_INITIALIZER(name) \ + { RWSEM_UNLOCKED_VALUE, \ + __RAW_SPIN_LOCK_UNLOCKED(name.wait_lock), \ + LIST_HEAD_INIT((name).wait_list) \ + __RWSEM_DEP_MAP_INIT(name) } #define DECLARE_RWSEM(name) \ struct rw_semaphore name = __RWSEM_INITIALIZER(name) -- cgit v1.2.2 From 2d21a29fb62f142b8a62496700d8d82a6a8fd783 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 25 Jul 2009 16:18:34 +0200 Subject: locking, oprofile: Annotate oprofilefs lock as raw The oprofilefs_lock can be taken in atomic context (in profiling interrupts) and therefore cannot cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/oprofile.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 49c8727eeb57..a4c562453f6b 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -166,7 +166,7 @@ ssize_t oprofilefs_ulong_to_user(unsigned long val, char __user * buf, size_t co int oprofilefs_ulong_from_user(unsigned long * val, char const __user * buf, size_t count); /** lock for read/write safety */ -extern spinlock_t oprofilefs_lock; +extern raw_spinlock_t oprofilefs_lock; /** * Add the contents of a circular buffer to the event buffer. -- cgit v1.2.2 From 1f5b3c3fd2d73d6b30e9ef6dcbf131a791d5cbbd Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 19 Jul 2011 16:19:51 +0200 Subject: locking, x86, iommu: Annotate iommu->register_lock as raw The iommu->register_lock can be taken in atomic context and therefore must not be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/intel-iommu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 9310c699a37d..19728c462399 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -311,7 +311,7 @@ struct intel_iommu { u64 cap; u64 ecap; u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */ - spinlock_t register_lock; /* protect register handling */ + raw_spinlock_t register_lock; /* protect register handling */ int seq_id; /* sequence id of the iommu */ int agaw; /* agaw of this iommu */ int msagaw; /* max sagaw of this iommu */ -- cgit v1.2.2 From 3b8f40481513a7b6123def5a02db4cff96ae2198 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 19 Jul 2011 17:02:07 +0200 Subject: locking, x86, iommu: Annotate qi->q_lock as raw The qi->q_lock lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/intel-iommu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 19728c462399..8b9b5d365f4e 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -271,7 +271,7 @@ struct qi_desc { }; struct q_inval { - spinlock_t q_lock; + raw_spinlock_t q_lock; struct qi_desc *desc; /* invalidation queue */ int *desc_status; /* desc status */ int free_head; /* first free entry */ -- cgit v1.2.2 From e2d646ce6cc638d229b3079981d5b0c7bc95db7f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sun, 28 Aug 2011 18:47:22 +0200 Subject: ssb: use u16 for storing board rev MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Specs say about size 2 (u16) and my 14e4:4727 has board rev 0x1211. Signed-off-by: Rafał Miłecki Acked-by: Larry Finger Signed-off-by: John W. Linville --- include/linux/ssb/ssb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index 8623217f84d0..f10ed7b4a714 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -25,7 +25,7 @@ struct ssb_sprom { u8 et1phyaddr; /* MII address for enet1 */ u8 et0mdcport; /* MDIO for enet0 */ u8 et1mdcport; /* MDIO for enet1 */ - u8 board_rev; /* Board revision number from SPROM. */ + u16 board_rev; /* Board revision number from SPROM. */ u8 country_code; /* Country Code */ u16 leddc_on_time; /* LED Powersave Duty Cycle On Count */ u16 leddc_off_time; /* LED Powersave Duty Cycle Off Count */ -- cgit v1.2.2 From f4b34b550a5428345f3794e62de48ad5a3db3954 Mon Sep 17 00:00:00 2001 From: Vivek Natarajan Date: Mon, 29 Aug 2011 14:23:03 +0530 Subject: cfg80211/nl80211: Indicate roaming feature capability to userspace. When the rssi of the current AP drops, both wpa_supplicant and the firmware may do a background scan to find a better AP and try to associate. Since firmware based roaming is faster, inform wpa_supplicant to avoid roaming and let the firmware decide to roam if necessary. For fullmac drivers like ath6kl, it is just enough to provide the ESSID and the firmware will decide on the BSSID. Since it is not possible to do pre-auth during roaming for fullmac drivers, the wpa_supplicant needs to completely disconnect with the old AP and reconnect with the new AP. This consumes lot of time and it is better to leave the roaming decision to the firmware. Signed-off-by: Vivek Natarajan Signed-off-by: John W. Linville --- include/linux/nl80211.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 0343504082a8..f2d75e3ceb43 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1045,6 +1045,9 @@ enum nl80211_commands { * @NL80211_ATTR_STA_WME: Nested attribute containing the wme configuration * of the station, see &enum nl80211_sta_wme_attr. * + * @NL80211_ATTR_ROAM_SUPPORT: Indicates whether the firmware is capable of + * roaming to another AP in the same ESS if the signal lever is low. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1257,6 +1260,8 @@ enum nl80211_attrs { NL80211_ATTR_STA_WME, + NL80211_ATTR_ROAM_SUPPORT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.2 From cedb5412baeffd7326fc4869aa996d7f68d98ebb Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 31 Aug 2011 11:29:43 +0300 Subject: nl80211/cfg80211: add WIPHY_FLAG_AP_UAPSD flag add WIPHY_FLAG_AP_UAPSD flag to indicate uapsd support on AP mode. Advertise it to userspace by including a new NL80211_ATTR_SUPPORT_AP_UAPSD attribute. Signed-off-by: Eliad Peller Signed-off-by: John W. Linville --- include/linux/nl80211.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index f2d75e3ceb43..387e6e220502 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1044,6 +1044,8 @@ enum nl80211_commands { * * @NL80211_ATTR_STA_WME: Nested attribute containing the wme configuration * of the station, see &enum nl80211_sta_wme_attr. + * @NL80211_ATTR_SUPPORT_AP_UAPSD: the device supports uapsd when working + * as AP. * * @NL80211_ATTR_ROAM_SUPPORT: Indicates whether the firmware is capable of * roaming to another AP in the same ESS if the signal lever is low. @@ -1259,6 +1261,7 @@ enum nl80211_attrs { NL80211_ATTR_IE_ASSOC_RESP, NL80211_ATTR_STA_WME, + NL80211_ATTR_SUPPORT_AP_UAPSD, NL80211_ATTR_ROAM_SUPPORT, -- cgit v1.2.2 From a1f1c21c181be20a8b7e073e5292ff1fe77769fa Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Wed, 31 Aug 2011 16:01:48 +0300 Subject: nl80211/cfg80211: add match filtering for sched_scan Introduce filtering for scheduled scans to reduce the number of unnecessary results (which cause useless wake-ups). Add a new nested attribute where sets of parameters to be matched can be passed when starting a scheduled scan. Only scan results that match any of the sets will be returned. At this point, the set consists of a single parameter, an SSID. This can be easily extended in the future to support more complex matches. Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville --- include/linux/nl80211.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 387e6e220502..8aa7badc1966 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -769,6 +769,8 @@ enum nl80211_commands { * that can be added to a scan request * @NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN: maximum length of information * elements that can be added to a scheduled scan request + * @NL80211_ATTR_MAX_MATCH_SETS: maximum number of sets that can be + * used with @NL80211_ATTR_SCHED_SCAN_MATCH, a wiphy attribute. * * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies (in MHz) * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs, leave out for passive @@ -1011,6 +1013,24 @@ enum nl80211_commands { * @NL80211_ATTR_SCHED_SCAN_INTERVAL: Interval between scheduled scan * cycles, in msecs. + + * @NL80211_ATTR_SCHED_SCAN_MATCH: Nested attribute with one or more + * sets of attributes to match during scheduled scans. Only BSSs + * that match any of the sets will be reported. These are + * pass-thru filter rules. + * For a match to succeed, the BSS must match all attributes of a + * set. Since not every hardware supports matching all types of + * attributes, there is no guarantee that the reported BSSs are + * fully complying with the match sets and userspace needs to be + * able to ignore them by itself. + * Thus, the implementation is somewhat hardware-dependent, but + * this is only an optimization and the userspace application + * needs to handle all the non-filtered results anyway. + * If the match attributes don't make sense when combined with + * the values passed in @NL80211_ATTR_SCAN_SSIDS (eg. if an SSID + * is included in the probe request, but the match attributes + * will never let it go through), -EINVAL may be returned. + * If ommited, no filtering is done. * * @NL80211_ATTR_INTERFACE_COMBINATIONS: Nested attribute listing the supported * interface combinations. In each nested item, it contains attributes @@ -1265,6 +1285,9 @@ enum nl80211_attrs { NL80211_ATTR_ROAM_SUPPORT, + NL80211_ATTR_SCHED_SCAN_MATCH, + NL80211_ATTR_MAX_MATCH_SETS, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -1723,6 +1746,26 @@ enum nl80211_reg_rule_attr { NL80211_REG_RULE_ATTR_MAX = __NL80211_REG_RULE_ATTR_AFTER_LAST - 1 }; +/** + * enum nl80211_sched_scan_match_attr - scheduled scan match attributes + * @__NL80211_SCHED_SCAN_MATCH_ATTR_INVALID: attribute number 0 is reserved + * @NL80211_SCHED_SCAN_MATCH_ATTR_SSID: SSID to be used for matching, + * only report BSS with matching SSID. + * @NL80211_SCHED_SCAN_MATCH_ATTR_MAX: highest scheduled scan filter + * attribute number currently defined + * @__NL80211_SCHED_SCAN_MATCH_ATTR_AFTER_LAST: internal use + */ +enum nl80211_sched_scan_match_attr { + __NL80211_SCHED_SCAN_MATCH_ATTR_INVALID, + + NL80211_ATTR_SCHED_SCAN_MATCH_SSID, + + /* keep last */ + __NL80211_SCHED_SCAN_MATCH_ATTR_AFTER_LAST, + NL80211_SCHED_SCAN_MATCH_ATTR_MAX = + __NL80211_SCHED_SCAN_MATCH_ATTR_AFTER_LAST - 1 +}; + /** * enum nl80211_reg_rule_flags - regulatory rule flags * -- cgit v1.2.2 From ed748aacb8e3318fa2cf24e1c197d35b5fd29605 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 12 Sep 2011 19:37:06 -0400 Subject: NFSD: Cleanup for nfsd4_path() The current code is sort of hackish in that it assumes a referral is always matched to an export. When we add support for junctions that may not be the case. We can replace nfsd4_path() with a function that encodes the components directly from the dentries. Since nfsd4_path is currently the only user of the 'ex_pathname' field in struct svc_export, this has the added benefit of allowing us to get rid of that. Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/nfsd/export.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 8a31a20efe7e..7ba3fd43f312 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -137,6 +137,7 @@ struct svc_export * rqst_exp_get_by_name(struct svc_rqst *, struct path *); struct svc_export * rqst_exp_parent(struct svc_rqst *, struct path *); +struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *); int exp_rootfh(struct auth_domain *, char *path, struct knfsd_fh *, int maxsize); __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *); -- cgit v1.2.2 From 2f1ddda1749a223d1a05e16dc6ea28632b9ec570 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 12 Sep 2011 19:37:16 -0400 Subject: NFSD: Remove the ex_pathname field from struct svc_export There are no more users... Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/nfsd/export.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 7ba3fd43f312..f85308e688fd 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -96,7 +96,6 @@ struct svc_export { struct auth_domain * ex_client; int ex_flags; struct path ex_path; - char *ex_pathname; uid_t ex_anon_uid; gid_t ex_anon_gid; int ex_fsid; -- cgit v1.2.2 From 1b9bb715e7c4c189c4215a11a09e2ccb16598d86 Mon Sep 17 00:00:00 2001 From: Boojin Kim Date: Fri, 2 Sep 2011 09:44:30 +0900 Subject: DMA: PL330: Update PL330 DMA API driver This patch updates following 3 items. 1. Removes unneccessary code. 2. Add AMBA, PL330 configuration 3. Change the meaning of 'peri_id' variable from PL330 event number to specific dma id by user. Signed-off-by: Boojin Kim Acked-by: Linus Walleij Acked-by: Vinod Koul Cc: Dan Williams Signed-off-by: Kukjin Kim Signed-off-by: Vinod Koul --- include/linux/amba/pl330.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl330.h b/include/linux/amba/pl330.h index cbee7de7dd36..d12f077a6daf 100644 --- a/include/linux/amba/pl330.h +++ b/include/linux/amba/pl330.h @@ -19,12 +19,8 @@ struct dma_pl330_peri { * Peri_Req i/f of the DMAC that is * peripheral could be reached from. */ - u8 peri_id; /* {0, 31} */ + u8 peri_id; /* specific dma id */ enum pl330_reqtype rqtype; - - /* For M->D and D->M Channels */ - int burst_sz; /* in power of 2 */ - dma_addr_t fifo_addr; }; struct dma_pl330_platdata { -- cgit v1.2.2 From da07ecd93b196819dcec488b7ebec69a71f3819e Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 11 Sep 2011 09:53:50 +0100 Subject: regulator: Implement deferred disable support It is a reasonably common pattern for hardware to require some delay after being quiesced before the disable has finalised, especially in mixed signal devices. For example, an active discharge may be required to ensure that the circuit starts up again in a known state. Avoid having to implement such delays in the regulator API by providing regulator_deferred_disable() which will do a regulator_disable() a specified number of milliseconds after it is called. Due to the reference counting done on regulators a deferred disable can be cancelled by doing another regulator_enable(). Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/regulator/consumer.h | 7 +++++++ include/linux/regulator/driver.h | 3 +++ 2 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 26f6ea4444e3..6fae97a6ce7d 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -141,6 +141,7 @@ int regulator_enable(struct regulator *regulator); int regulator_disable(struct regulator *regulator); int regulator_force_disable(struct regulator *regulator); int regulator_is_enabled(struct regulator *regulator); +int regulator_disable_deferred(struct regulator *regulator, int ms); int regulator_bulk_get(struct device *dev, int num_consumers, struct regulator_bulk_data *consumers); @@ -211,6 +212,12 @@ static inline int regulator_disable(struct regulator *regulator) return 0; } +static inline int regulator_disable_deferred(struct regulator *regulator, + int ms) +{ + return 0; +} + static inline int regulator_is_enabled(struct regulator *regulator) { return 1; diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 1a80bc77517d..12a1aa04b720 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -199,6 +199,9 @@ struct regulator_dev { struct regulation_constraints *constraints; struct regulator *supply; /* for tree */ + struct delayed_work disable_work; + int deferred_disables; + void *reg_data; /* regulator_dev data */ #ifdef CONFIG_DEBUG_FS -- cgit v1.2.2 From 849a1cf13d4394d398d91752166e92e9ecd64f8d Mon Sep 17 00:00:00 2001 From: Mi Jinlong Date: Tue, 30 Aug 2011 17:18:41 +0800 Subject: SUNRPC: Replace svc_addr_u by sockaddr_storage For IPv6 local address, lockd can not callback to client for missing scope id when binding address at inet6_bind: 324 if (addr_type & IPV6_ADDR_LINKLOCAL) { 325 if (addr_len >= sizeof(struct sockaddr_in6) && 326 addr->sin6_scope_id) { 327 /* Override any existing binding, if another one 328 * is supplied by user. 329 */ 330 sk->sk_bound_dev_if = addr->sin6_scope_id; 331 } 332 333 /* Binding to link-local address requires an interface */ 334 if (!sk->sk_bound_dev_if) { 335 err = -EINVAL; 336 goto out_unlock; 337 } Replacing svc_addr_u by sockaddr_storage, let rqstp->rq_daddr contains more info besides address. Reviewed-by: Jeff Layton Reviewed-by: Chuck Lever Signed-off-by: Mi Jinlong Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index a78a51e93373..d8d5d93071b3 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -212,11 +212,6 @@ static inline void svc_putu32(struct kvec *iov, __be32 val) iov->iov_len += sizeof(__be32); } -union svc_addr_u { - struct in_addr addr; - struct in6_addr addr6; -}; - /* * The context of a single thread, including the request currently being * processed. @@ -225,8 +220,12 @@ struct svc_rqst { struct list_head rq_list; /* idle list */ struct list_head rq_all; /* all threads list */ struct svc_xprt * rq_xprt; /* transport ptr */ + struct sockaddr_storage rq_addr; /* peer address */ size_t rq_addrlen; + struct sockaddr_storage rq_daddr; /* dest addr of request + * - reply from here */ + size_t rq_daddrlen; struct svc_serv * rq_server; /* RPC service definition */ struct svc_pool * rq_pool; /* thread pool */ @@ -255,9 +254,6 @@ struct svc_rqst { unsigned short rq_secure : 1; /* secure port */ - union svc_addr_u rq_daddr; /* dest addr of request - * - reply from here */ - void * rq_argp; /* decoded arguments */ void * rq_resp; /* xdr'd results */ void * rq_auth_data; /* flavor-specific data */ @@ -300,6 +296,21 @@ static inline struct sockaddr *svc_addr(const struct svc_rqst *rqst) return (struct sockaddr *) &rqst->rq_addr; } +static inline struct sockaddr_in *svc_daddr_in(const struct svc_rqst *rqst) +{ + return (struct sockaddr_in *) &rqst->rq_daddr; +} + +static inline struct sockaddr_in6 *svc_daddr_in6(const struct svc_rqst *rqst) +{ + return (struct sockaddr_in6 *) &rqst->rq_daddr; +} + +static inline struct sockaddr *svc_daddr(const struct svc_rqst *rqst) +{ + return (struct sockaddr *) &rqst->rq_daddr; +} + /* * Check buffer bounds after decoding arguments */ @@ -340,7 +351,8 @@ struct svc_deferred_req { struct svc_xprt *xprt; struct sockaddr_storage addr; /* where reply must go */ size_t addrlen; - union svc_addr_u daddr; /* where reply must come from */ + struct sockaddr_storage daddr; /* where reply must come from */ + size_t daddrlen; struct cache_deferred_req handle; size_t xprt_hlen; int argslen; -- cgit v1.2.2 From 038c01598e728cda5b2996c4bf883e8485b2fe50 Mon Sep 17 00:00:00 2001 From: Mi Jinlong Date: Tue, 30 Aug 2011 17:22:49 +0800 Subject: SUNRPC: compare scopeid for link-local addresses For ipv6 link-local addresses, sunrpc do not compare those scope id. This patch let sunrpc compares scope id only on link-local addresses. Signed-off-by: Mi Jinlong Reviewed-by: Chuck Lever Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/clnt.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index db7bcaf7c5bd..ee1bb67f525e 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -218,7 +218,13 @@ static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, { const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1; const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2; - return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr); + + if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr)) + return false; + else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL) + return sin1->sin6_scope_id == sin2->sin6_scope_id; + + return true; } static inline bool __rpc_copy_addr6(struct sockaddr *dst, -- cgit v1.2.2 From 4f3f8d9db359bbc780d482849f2a9c8b12f910b6 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Tue, 13 Sep 2011 15:25:23 -0400 Subject: iommu/core: Add fault reporting mechanism Add iommu fault report mechanism to the IOMMU API, so implementations could report about mmu faults (translation errors, hardware errors, etc..). Fault reports can be used in several ways: - mere logging - reset the device that accessed the faulting address (may be necessary in case the device is a remote processor for example) - implement dynamic PTE/TLB loading A dedicated iommu_set_fault_handler() API has been added to allow users, who are interested to receive such reports, to provide their handler. Signed-off-by: Ohad Ben-Cohen Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 9940319d6f9d..d084e8777e0e 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -26,9 +26,18 @@ #define IOMMU_CACHE (4) /* DMA cache coherency */ struct device; +struct iommu_domain; + +/* iommu fault flags */ +#define IOMMU_FAULT_READ 0x0 +#define IOMMU_FAULT_WRITE 0x1 + +typedef int (*iommu_fault_handler_t)(struct iommu_domain *, + struct device *, unsigned long, int); struct iommu_domain { void *priv; + iommu_fault_handler_t handler; }; #define IOMMU_CAP_CACHE_COHERENCY 0x1 @@ -67,6 +76,43 @@ extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, unsigned long iova); extern int iommu_domain_has_cap(struct iommu_domain *domain, unsigned long cap); +extern void iommu_set_fault_handler(struct iommu_domain *domain, + iommu_fault_handler_t handler); + +/** + * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework + * @domain: the iommu domain where the fault has happened + * @dev: the device where the fault has happened + * @iova: the faulting address + * @flags: mmu fault flags (e.g. IOMMU_FAULT_READ/IOMMU_FAULT_WRITE/...) + * + * This function should be called by the low-level IOMMU implementations + * whenever IOMMU faults happen, to allow high-level users, that are + * interested in such events, to know about them. + * + * This event may be useful for several possible use cases: + * - mere logging of the event + * - dynamic TLB/PTE loading + * - if restarting of the faulting device is required + * + * Returns 0 on success and an appropriate error code otherwise (if dynamic + * PTE/TLB loading will one day be supported, implementations will be able + * to tell whether it succeeded or not according to this return value). + */ +static inline int report_iommu_fault(struct iommu_domain *domain, + struct device *dev, unsigned long iova, int flags) +{ + int ret = 0; + + /* + * if upper layers showed interest and installed a fault handler, + * invoke it. + */ + if (domain->handler) + ret = domain->handler(domain, dev, iova, flags); + + return ret; +} #else /* CONFIG_IOMMU_API */ @@ -123,6 +169,11 @@ static inline int domain_has_cap(struct iommu_domain *domain, return 0; } +static inline void iommu_set_fault_handler(struct iommu_domain *domain, + iommu_fault_handler_t handler) +{ +} + #endif /* CONFIG_IOMMU_API */ #endif /* __LINUX_IOMMU_H */ -- cgit v1.2.2 From 00137425fe5892e6e531ffee6bf5f108d823b70f Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 12 Sep 2011 18:54:10 +0200 Subject: USB: Add endpoint usage definitions to ch9.h The endpoint usage field is described in the USB 2.0 specification, chapter 9.6.6. Also, move the sync type fields block down by some lines to reflect the fact that these are also stuffed in bmAttributes. Signed-off-by: Daniel Mack Acked-by: Clemens Ladisch Acked-by: Greg Kroah-Hartman Signed-off-by: Takashi Iwai --- include/linux/usb/ch9.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 0fd3fbdd8283..f30253599501 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -377,12 +377,6 @@ struct usb_endpoint_descriptor { #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */ #define USB_ENDPOINT_DIR_MASK 0x80 -#define USB_ENDPOINT_SYNCTYPE 0x0c -#define USB_ENDPOINT_SYNC_NONE (0 << 2) -#define USB_ENDPOINT_SYNC_ASYNC (1 << 2) -#define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2) -#define USB_ENDPOINT_SYNC_SYNC (3 << 2) - #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */ #define USB_ENDPOINT_XFER_CONTROL 0 #define USB_ENDPOINT_XFER_ISOC 1 @@ -390,6 +384,17 @@ struct usb_endpoint_descriptor { #define USB_ENDPOINT_XFER_INT 3 #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80 +#define USB_ENDPOINT_SYNCTYPE 0x0c +#define USB_ENDPOINT_SYNC_NONE (0 << 2) +#define USB_ENDPOINT_SYNC_ASYNC (1 << 2) +#define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2) +#define USB_ENDPOINT_SYNC_SYNC (3 << 2) + +#define USB_ENDPOINT_USAGE_MASK 0x30 +#define USB_ENDPOINT_USAGE_DATA 0x00 +#define USB_ENDPOINT_USAGE_FEEDBACK 0x10 +#define USB_ENDPOINT_USAGE_IMPLICIT_FB 0x20 /* Implicit feedback Data endpoint */ + /*-------------------------------------------------------------------------*/ /** -- cgit v1.2.2 From 2154c81c32fa44364f83218a10d8dbec4e76d4f5 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Wed, 7 Sep 2011 17:49:53 -0700 Subject: mac80211: Mesh data frames must have the QoS header Per sec 7.1.3.5 of draft 12.0 of 802.11s, mesh frames indicate the presence of the mesh control header in their QoS header. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 37f95f2e10f9..72f3933938c0 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -130,6 +130,8 @@ #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK 0x0060 /* A-MSDU 802.11n */ #define IEEE80211_QOS_CTL_A_MSDU_PRESENT 0x0080 +/* Mesh Control 802.11s */ +#define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT 0x0100 /* U-APSD queue for WMM IEs sent by AP */ #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7) -- cgit v1.2.2 From bf6d0f5dcda17df3cc5577e203d0f8ea1c2ad6aa Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Thu, 18 Aug 2011 18:07:44 -0400 Subject: evm: posix acls modify i_mode The posix xattr acls are 'system' prefixed, which normally would not affect security.evm. An interesting side affect of writing posix xattr acls is their modifying of the i_mode, which is included in security.evm. This patch updates security.evm when posix xattr acls are written. Signed-off-by: Mimi Zohar --- include/linux/evm.h | 8 ++++++++ include/linux/xattr.h | 5 +++++ 2 files changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/evm.h b/include/linux/evm.h index ea603c9e775d..9fc13a760928 100644 --- a/include/linux/evm.h +++ b/include/linux/evm.h @@ -33,6 +33,14 @@ extern void evm_inode_post_removexattr(struct dentry *dentry, extern int evm_inode_init_security(struct inode *inode, const struct xattr *xattr_array, struct xattr *evm); +#ifdef CONFIG_FS_POSIX_ACL +extern int posix_xattr_acl(const char *xattrname); +#else +static inline int posix_xattr_acl(const char *xattrname) +{ + return 0; +} +#endif #else #ifdef CONFIG_INTEGRITY static inline enum integrity_status evm_verifyxattr(struct dentry *dentry, diff --git a/include/linux/xattr.h b/include/linux/xattr.h index b20cb965c322..e5d122031542 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -52,6 +52,11 @@ #define XATTR_CAPS_SUFFIX "capability" #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX +#define XATTR_POSIX_ACL_ACCESS "posix_acl_access" +#define XATTR_NAME_POSIX_ACL_ACCESS XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_ACCESS +#define XATTR_POSIX_ACL_DEFAULT "posix_acl_default" +#define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT + #ifdef __KERNEL__ #include -- cgit v1.2.2 From 566be59ab86c0e030b980645a580d683a015a483 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Mon, 22 Aug 2011 09:14:18 -0400 Subject: evm: permit mode bits to be updated Before permitting 'security.evm' to be updated, 'security.evm' must exist and be valid. In the case that there are no existing EVM protected xattrs, it is safe for posix acls to update the mode bits. To differentiate between no 'security.evm' xattr and no xattrs used to calculate 'security.evm', this patch defines INTEGRITY_NOXATTR. Signed-off-by: Mimi Zohar --- include/linux/integrity.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/integrity.h b/include/linux/integrity.h index 968443385678..a0c41256cb92 100644 --- a/include/linux/integrity.h +++ b/include/linux/integrity.h @@ -16,6 +16,7 @@ enum integrity_status { INTEGRITY_PASS = 0, INTEGRITY_FAIL, INTEGRITY_NOLABEL, + INTEGRITY_NOXATTRS, INTEGRITY_UNKNOWN, }; -- cgit v1.2.2 From 1d273b929cad7b1ee95d5c15ac806b3abc764278 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 3 Jun 2011 02:28:46 -0700 Subject: drbd: Use angle brackets for system includes Use the normal include style. Signed-off-by: Joe Perches Signed-off-by: Jiri Kosina --- include/linux/drbd_tag_magic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_tag_magic.h b/include/linux/drbd_tag_magic.h index 069543190516..81f52f2c5724 100644 --- a/include/linux/drbd_tag_magic.h +++ b/include/linux/drbd_tag_magic.h @@ -28,7 +28,7 @@ enum packet_types { #define NL_STRING(pn, pr, member, len) \ unsigned char member[len]; int member ## _len; \ int tag_and_len ## member; -#include "linux/drbd_nl.h" +#include /* declare tag-list-sizes */ static const int tag_list_sizes[] = { -- cgit v1.2.2 From e81b15168e2d3d1ab56b13782fe8ad0cb362379d Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Mon, 1 Aug 2011 23:04:30 +0200 Subject: Remove unneeded version.h includes from include/ It was pointed out by 'make versioncheck' that some includes of linux/version.h are not needed in include/. This patch removes them. When I last posted the patch, the ceph bit was ACK'ed by Sage Weil, so I've added that below. The pwc-ioctl change generated quite a bit of discussion about V4L version numbers in general, but as far as I can tell, no concensus was reached on what the long term solution should be, so in the mean time I think we could start by just removing the unneeded include, which is why I'm resending the patch with that hunk still included. Signed-off-by: Jesper Juhl Acked-by: Sage Weil Signed-off-by: Jiri Kosina --- include/linux/ceph/messenger.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 31d91a64838b..291aa6e18d31 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -6,7 +6,6 @@ #include #include #include -#include #include #include "types.h" -- cgit v1.2.2 From c44f7eb4c127be8bb8b160902845b88d489492e5 Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Wed, 31 Aug 2011 23:22:16 +0000 Subject: mii: Convert spaces to tabs in mii.h Whitespace changes - spaces converted to tabs after each define name and value Signed-off-by: Mark Einon Signed-off-by: David S. Miller --- include/linux/mii.h | 210 ++++++++++++++++++++++++++-------------------------- 1 file changed, 104 insertions(+), 106 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mii.h b/include/linux/mii.h index 103113a2fd18..d9f77505d009 100644 --- a/include/linux/mii.h +++ b/include/linux/mii.h @@ -11,131 +11,130 @@ #include /* Generic MII registers. */ - -#define MII_BMCR 0x00 /* Basic mode control register */ -#define MII_BMSR 0x01 /* Basic mode status register */ -#define MII_PHYSID1 0x02 /* PHYS ID 1 */ -#define MII_PHYSID2 0x03 /* PHYS ID 2 */ -#define MII_ADVERTISE 0x04 /* Advertisement control reg */ -#define MII_LPA 0x05 /* Link partner ability reg */ -#define MII_EXPANSION 0x06 /* Expansion register */ -#define MII_CTRL1000 0x09 /* 1000BASE-T control */ -#define MII_STAT1000 0x0a /* 1000BASE-T status */ -#define MII_ESTATUS 0x0f /* Extended Status */ -#define MII_DCOUNTER 0x12 /* Disconnect counter */ -#define MII_FCSCOUNTER 0x13 /* False carrier counter */ -#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ -#define MII_RERRCOUNTER 0x15 /* Receive error counter */ -#define MII_SREVISION 0x16 /* Silicon revision */ -#define MII_RESV1 0x17 /* Reserved... */ -#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ -#define MII_PHYADDR 0x19 /* PHY address */ -#define MII_RESV2 0x1a /* Reserved... */ -#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ -#define MII_NCONFIG 0x1c /* Network interface config */ +#define MII_BMCR 0x00 /* Basic mode control register */ +#define MII_BMSR 0x01 /* Basic mode status register */ +#define MII_PHYSID1 0x02 /* PHYS ID 1 */ +#define MII_PHYSID2 0x03 /* PHYS ID 2 */ +#define MII_ADVERTISE 0x04 /* Advertisement control reg */ +#define MII_LPA 0x05 /* Link partner ability reg */ +#define MII_EXPANSION 0x06 /* Expansion register */ +#define MII_CTRL1000 0x09 /* 1000BASE-T control */ +#define MII_STAT1000 0x0a /* 1000BASE-T status */ +#define MII_ESTATUS 0x0f /* Extended Status */ +#define MII_DCOUNTER 0x12 /* Disconnect counter */ +#define MII_FCSCOUNTER 0x13 /* False carrier counter */ +#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ +#define MII_RERRCOUNTER 0x15 /* Receive error counter */ +#define MII_SREVISION 0x16 /* Silicon revision */ +#define MII_RESV1 0x17 /* Reserved... */ +#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ +#define MII_PHYADDR 0x19 /* PHY address */ +#define MII_RESV2 0x1a /* Reserved... */ +#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ +#define MII_NCONFIG 0x1c /* Network interface config */ /* Basic mode control register. */ -#define BMCR_RESV 0x003f /* Unused... */ -#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ -#define BMCR_CTST 0x0080 /* Collision test */ -#define BMCR_FULLDPLX 0x0100 /* Full duplex */ -#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ -#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ -#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ -#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ -#define BMCR_SPEED100 0x2000 /* Select 100Mbps */ -#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ -#define BMCR_RESET 0x8000 /* Reset the DP83840 */ +#define BMCR_RESV 0x003f /* Unused... */ +#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ +#define BMCR_CTST 0x0080 /* Collision test */ +#define BMCR_FULLDPLX 0x0100 /* Full duplex */ +#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ +#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ +#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ +#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ +#define BMCR_SPEED100 0x2000 /* Select 100Mbps */ +#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ +#define BMCR_RESET 0x8000 /* Reset the DP83840 */ /* Basic mode status register. */ -#define BMSR_ERCAP 0x0001 /* Ext-reg capability */ -#define BMSR_JCD 0x0002 /* Jabber detected */ -#define BMSR_LSTATUS 0x0004 /* Link status */ -#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ -#define BMSR_RFAULT 0x0010 /* Remote fault detected */ -#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ -#define BMSR_RESV 0x00c0 /* Unused... */ -#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ -#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ -#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ -#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ -#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ -#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ -#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ -#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ +#define BMSR_ERCAP 0x0001 /* Ext-reg capability */ +#define BMSR_JCD 0x0002 /* Jabber detected */ +#define BMSR_LSTATUS 0x0004 /* Link status */ +#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ +#define BMSR_RFAULT 0x0010 /* Remote fault detected */ +#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ +#define BMSR_RESV 0x00c0 /* Unused... */ +#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ +#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ +#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ +#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ +#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ +#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ +#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ +#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ /* Advertisement control register. */ -#define ADVERTISE_SLCT 0x001f /* Selector bits */ -#define ADVERTISE_CSMA 0x0001 /* Only selector supported */ -#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ -#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ -#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ -#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ -#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ -#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ -#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ -#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ -#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ -#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ -#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ -#define ADVERTISE_RESV 0x1000 /* Unused... */ -#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ -#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ -#define ADVERTISE_NPAGE 0x8000 /* Next page bit */ - -#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ - ADVERTISE_CSMA) -#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ - ADVERTISE_100HALF | ADVERTISE_100FULL) +#define ADVERTISE_SLCT 0x001f /* Selector bits */ +#define ADVERTISE_CSMA 0x0001 /* Only selector supported */ +#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ +#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ +#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ +#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ +#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ +#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ +#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ +#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ +#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ +#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ +#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ +#define ADVERTISE_RESV 0x1000 /* Unused... */ +#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ +#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ +#define ADVERTISE_NPAGE 0x8000 /* Next page bit */ + +#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ + ADVERTISE_CSMA) +#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ + ADVERTISE_100HALF | ADVERTISE_100FULL) /* Link partner ability register. */ -#define LPA_SLCT 0x001f /* Same as advertise selector */ -#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ -#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ -#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ -#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ -#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ -#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ -#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ -#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ -#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ -#define LPA_PAUSE_CAP 0x0400 /* Can pause */ -#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ -#define LPA_RESV 0x1000 /* Unused... */ -#define LPA_RFAULT 0x2000 /* Link partner faulted */ -#define LPA_LPACK 0x4000 /* Link partner acked us */ -#define LPA_NPAGE 0x8000 /* Next page bit */ +#define LPA_SLCT 0x001f /* Same as advertise selector */ +#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ +#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ +#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ +#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ +#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ +#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ +#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ +#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ +#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ +#define LPA_PAUSE_CAP 0x0400 /* Can pause */ +#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ +#define LPA_RESV 0x1000 /* Unused... */ +#define LPA_RFAULT 0x2000 /* Link partner faulted */ +#define LPA_LPACK 0x4000 /* Link partner acked us */ +#define LPA_NPAGE 0x8000 /* Next page bit */ #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) /* Expansion register for auto-negotiation. */ -#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ -#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ -#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ -#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ -#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ -#define EXPANSION_RESV 0xffe0 /* Unused... */ +#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ +#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ +#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ +#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ +#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ +#define EXPANSION_RESV 0xffe0 /* Unused... */ -#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ -#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ +#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ +#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ /* N-way test register. */ -#define NWAYTEST_RESV1 0x00ff /* Unused... */ -#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ -#define NWAYTEST_RESV2 0xfe00 /* Unused... */ +#define NWAYTEST_RESV1 0x00ff /* Unused... */ +#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ +#define NWAYTEST_RESV2 0xfe00 /* Unused... */ /* 1000BASE-T Control register */ -#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ -#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ +#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ +#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ #define CTL1000_AS_MASTER 0x0800 #define CTL1000_ENABLE_MASTER 0x1000 /* 1000BASE-T Status register */ -#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ -#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ -#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ -#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ +#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ +#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ +#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ +#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ /* Flow control flags */ #define FLOW_CTRL_TX 0x01 @@ -149,7 +148,7 @@ struct mii_ioctl_data { __u16 val_out; }; -#ifdef __KERNEL__ +#ifdef __KERNEL__ #include @@ -180,7 +179,7 @@ extern unsigned int mii_check_media (struct mii_if_info *mii, unsigned int ok_to_print, unsigned int init_media); extern int generic_mii_ioctl(struct mii_if_info *mii_if, - struct mii_ioctl_data *mii_data, int cmd, + struct mii_ioctl_data *mii_data, int cmd, unsigned int *duplex_changed); @@ -189,7 +188,6 @@ static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) return (struct mii_ioctl_data *) &rq->ifr_ifru; } - /** * mii_nway_result * @negotiated: value of MII ANAR and'd with ANLPAR -- cgit v1.2.2 From e8aaebc6b2a9c36dd9705adcb8f10d14b3d33f75 Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Wed, 31 Aug 2011 23:22:17 +0000 Subject: mii: Remove references to DP83840 PHY in mii.h There are references to this PHY chip in the generic mii.h header, so removing them. Re-jiggle the changed comments, in response to points raised by Ben Hutchings. Signed-off-by: Mark Einon Signed-off-by: David S. Miller --- include/linux/mii.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mii.h b/include/linux/mii.h index d9f77505d009..27748230aa69 100644 --- a/include/linux/mii.h +++ b/include/linux/mii.h @@ -39,12 +39,12 @@ #define BMCR_CTST 0x0080 /* Collision test */ #define BMCR_FULLDPLX 0x0100 /* Full duplex */ #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ -#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ -#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ +#define BMCR_ISOLATE 0x0400 /* Isolate data paths from MII */ +#define BMCR_PDOWN 0x0800 /* Enable low power state */ #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ #define BMCR_SPEED100 0x2000 /* Select 100Mbps */ #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ -#define BMCR_RESET 0x8000 /* Reset the DP83840 */ +#define BMCR_RESET 0x8000 /* Reset to default state */ /* Basic mode status register. */ #define BMSR_ERCAP 0x0001 /* Ext-reg capability */ -- cgit v1.2.2 From 4bc71cb983fd2844e603bf633df2bb53385182d2 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 3 Sep 2011 03:34:30 +0000 Subject: net: consolidate and fix ethtool_ops->get_settings calling This patch does several things: - introduces __ethtool_get_settings which is called from ethtool code and from drivers as well. Put ASSERT_RTNL there. - dev_ethtool_get_settings() is replaced by __ethtool_get_settings() - changes calling in drivers so rtnl locking is respected. In iboe_get_rate was previously ->get_settings() called unlocked. This fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same problem. Also fixed by calling __dev_get_by_index() instead of dev_get_by_index() and holding rtnl_lock for both calls. - introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create() so bnx2fc_if_create() and fcoe_if_create() are called locked as they are from other places. - use __ethtool_get_settings() in bonding code Signed-off-by: Jiri Pirko v2->v3: -removed dev_ethtool_get_settings() -added ASSERT_RTNL into __ethtool_get_settings() -prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock around it and __ethtool_get_settings() call v1->v2: add missing export_symbol Reviewed-by: Ben Hutchings [except FCoE bits] Acked-by: Ralf Baechle Signed-off-by: David S. Miller --- include/linux/ethtool.h | 3 +++ include/linux/netdevice.h | 3 --- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 3829712ccc05..8571f18c38a6 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -728,6 +728,9 @@ enum ethtool_sfeatures_retval_bits { /* needed by dev_disable_lro() */ extern int __ethtool_set_flags(struct net_device *dev, u32 flags); +extern int __ethtool_get_settings(struct net_device *dev, + struct ethtool_cmd *cmd); + /** * enum ethtool_phys_id_state - indicator state for physical identification * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0a7f619f284e..43b32983ba10 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2589,9 +2589,6 @@ static inline int netif_is_bond_slave(struct net_device *dev) extern struct pernet_operations __net_initdata loopback_net_ops; -int dev_ethtool_get_settings(struct net_device *dev, - struct ethtool_cmd *cmd); - static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) { if (dev->features & NETIF_F_RXCSUM) -- cgit v1.2.2 From 910868db3f114df32387a9c51a729b2645febe4d Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Sun, 11 Sep 2011 09:46:55 +0300 Subject: nl80211/cfg80211/mac80211: fix wme docs Add/fix some missing docs. Signed-off-by: Eliad Peller Signed-off-by: John W. Linville --- include/linux/nl80211.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 8aa7badc1966..f17307590e61 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -2541,8 +2541,10 @@ enum nl80211_hidden_ssid { /** * enum nl80211_sta_wme_attr - station WME attributes * @__NL80211_STA_WME_INVALID: invalid number for nested attribute - * @NL80211_STA_WME_QUEUES: bitmap of uapsd queues. - * @NL80211_STA_WME_MAX_SP: max service period. + * @NL80211_STA_WME_UAPSD_QUEUES: bitmap of uapsd queues. the format + * is the same as the AC bitmap in the QoS info field. + * @NL80211_STA_WME_MAX_SP: max service period. the format is the same + * as the MAX_SP field in the QoS info field (but already shifted down). * @__NL80211_STA_WME_AFTER_LAST: internal * @NL80211_STA_WME_MAX: highest station WME attribute */ -- cgit v1.2.2 From c1aabdf379bc2feeb0df7057ed5bad96f492133e Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Thu, 1 Sep 2011 04:23:23 +0000 Subject: can-gw: add netlink based CAN routing This patch adds a CAN Gateway/Router to route (and modify) CAN frames. It is based on the PF_CAN core infrastructure for msg filtering and msg sending and can optionally modify routed CAN frames on the fly. CAN frames can *only* be routed between CAN network interfaces (one hop). They can be modified with AND/OR/XOR/SET operations as configured by the netlink configuration interface known e.g. from iptables. From the netlink view this can-gw implements RTM_{NEW|DEL|GET}ROUTE for PF_CAN. The CAN specific userspace tool to manage CAN routing entries can be found in the CAN utils http://svn.berlios.de/wsvn/socketcan/trunk/can-utils/cangw.c at the SocketCAN SVN on BerliOS. Signed-off-by: Oliver Hartkopp Signed-off-by: David S. Miller --- include/linux/can/Kbuild | 1 + include/linux/can/gw.h | 164 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 165 insertions(+) create mode 100644 include/linux/can/gw.h (limited to 'include/linux') diff --git a/include/linux/can/Kbuild b/include/linux/can/Kbuild index 8cb05aae661c..c62b7f1728f9 100644 --- a/include/linux/can/Kbuild +++ b/include/linux/can/Kbuild @@ -1,4 +1,5 @@ header-y += raw.h header-y += bcm.h +header-y += gw.h header-y += error.h header-y += netlink.h diff --git a/include/linux/can/gw.h b/include/linux/can/gw.h new file mode 100644 index 000000000000..5527b54a7cc4 --- /dev/null +++ b/include/linux/can/gw.h @@ -0,0 +1,164 @@ +/* + * linux/can/gw.h + * + * Definitions for CAN frame Gateway/Router/Bridge + * + * Author: Oliver Hartkopp + * Copyright (c) 2011 Volkswagen Group Electronic Research + * All rights reserved. + * + * Send feedback to + * + */ + +#ifndef CAN_GW_H +#define CAN_GW_H + +#include +#include + +struct rtcanmsg { + __u8 can_family; + __u8 gwtype; + __u16 flags; +}; + +/* CAN gateway types */ +enum { + CGW_TYPE_UNSPEC, + CGW_TYPE_CAN_CAN, /* CAN->CAN routing */ + __CGW_TYPE_MAX +}; + +#define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1) + +/* CAN rtnetlink attribute definitions */ +enum { + CGW_UNSPEC, + CGW_MOD_AND, /* CAN frame modification binary AND */ + CGW_MOD_OR, /* CAN frame modification binary OR */ + CGW_MOD_XOR, /* CAN frame modification binary XOR */ + CGW_MOD_SET, /* CAN frame modification set alternate values */ + CGW_CS_XOR, /* set data[] XOR checksum into data[index] */ + CGW_CS_CRC8, /* set data[] CRC8 checksum into data[index] */ + CGW_HANDLED, /* number of handled CAN frames */ + CGW_DROPPED, /* number of dropped CAN frames */ + CGW_SRC_IF, /* ifindex of source network interface */ + CGW_DST_IF, /* ifindex of destination network interface */ + CGW_FILTER, /* specify struct can_filter on source CAN device */ + __CGW_MAX +}; + +#define CGW_MAX (__CGW_MAX - 1) + +#define CGW_FLAGS_CAN_ECHO 0x01 +#define CGW_FLAGS_CAN_SRC_TSTAMP 0x02 + +#define CGW_MOD_FUNCS 4 /* AND OR XOR SET */ + +/* CAN frame elements that are affected by curr. 3 CAN frame modifications */ +#define CGW_MOD_ID 0x01 +#define CGW_MOD_DLC 0x02 +#define CGW_MOD_DATA 0x04 + +#define CGW_FRAME_MODS 3 /* ID DLC DATA */ + +#define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS) + +struct cgw_frame_mod { + struct can_frame cf; + __u8 modtype; +} __attribute__((packed)); + +#define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod) + +struct cgw_csum_xor { + __s8 from_idx; + __s8 to_idx; + __s8 result_idx; + __u8 init_xor_val; +} __attribute__((packed)); + +struct cgw_csum_crc8 { + __s8 from_idx; + __s8 to_idx; + __s8 result_idx; + __u8 init_crc_val; + __u8 final_xor_val; + __u8 crctab[256]; + __u8 profile; + __u8 profile_data[20]; +} __attribute__((packed)); + +/* length of checksum operation parameters. idx = index in CAN frame data[] */ +#define CGW_CS_XOR_LEN sizeof(struct cgw_csum_xor) +#define CGW_CS_CRC8_LEN sizeof(struct cgw_csum_crc8) + +/* CRC8 profiles (compute CRC for additional data elements - see below) */ +enum { + CGW_CRC8PRF_UNSPEC, + CGW_CRC8PRF_1U8, /* compute one additional u8 value */ + CGW_CRC8PRF_16U8, /* u8 value table indexed by data[1] & 0xF */ + CGW_CRC8PRF_SFFID_XOR, /* (can_id & 0xFF) ^ (can_id >> 8 & 0xFF) */ + __CGW_CRC8PRF_MAX +}; + +#define CGW_CRC8PRF_MAX (__CGW_CRC8PRF_MAX - 1) + +/* + * CAN rtnetlink attribute contents in detail + * + * CGW_XXX_IF (length 4 bytes): + * Sets an interface index for source/destination network interfaces. + * For the CAN->CAN gwtype the indices of _two_ CAN interfaces are mandatory. + * + * CGW_FILTER (length 8 bytes): + * Sets a CAN receive filter for the gateway job specified by the + * struct can_filter described in include/linux/can.h + * + * CGW_MOD_XXX (length 17 bytes): + * Specifies a modification that's done to a received CAN frame before it is + * send out to the destination interface. + * + * data used as operator + * affected CAN frame elements + * + * CGW_CS_XOR (length 4 bytes): + * Set a simple XOR checksum starting with an initial value into + * data[result-idx] using data[start-idx] .. data[end-idx] + * + * The XOR checksum is calculated like this: + * + * xor = init_xor_val + * + * for (i = from_idx .. to_idx) + * xor ^= can_frame.data[i] + * + * can_frame.data[ result_idx ] = xor + * + * CGW_CS_CRC8 (length 282 bytes): + * Set a CRC8 value into data[result-idx] using a given 256 byte CRC8 table, + * a given initial value and a defined input data[start-idx] .. data[end-idx]. + * Finally the result value is XOR'ed with the final_xor_val. + * + * The CRC8 checksum is calculated like this: + * + * crc = init_crc_val + * + * for (i = from_idx .. to_idx) + * crc = crctab[ crc ^ can_frame.data[i] ] + * + * can_frame.data[ result_idx ] = crc ^ final_xor_val + * + * The calculated CRC may contain additional source data elements that can be + * defined in the handling of 'checksum profiles' e.g. shown in AUTOSAR specs + * like http://www.autosar.org/download/R4.0/AUTOSAR_SWS_E2ELibrary.pdf + * E.g. the profile_data[] may contain additional u8 values (called DATA_IDs) + * that are used depending on counter values inside the CAN frame data[]. + * So far only three profiles have been implemented for illustration. + * + * Remark: In general the attribute data is a linear buffer. + * Beware of sending unpacked or aligned structs! + */ + +#endif -- cgit v1.2.2 From d97a077a15ae21e161e74def7762caa99200e4cf Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Fri, 16 Sep 2011 11:04:29 +0000 Subject: wan: make LAPB callbacks const This is compile tested only. Suggested by dumpster diving in PAX. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/lapb.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lapb.h b/include/linux/lapb.h index ce709e1885cc..873c1eb635e4 100644 --- a/include/linux/lapb.h +++ b/include/linux/lapb.h @@ -44,7 +44,8 @@ struct lapb_parms_struct { unsigned int mode; }; -extern int lapb_register(struct net_device *dev, struct lapb_register_struct *callbacks); +extern int lapb_register(struct net_device *dev, + const struct lapb_register_struct *callbacks); extern int lapb_unregister(struct net_device *dev); extern int lapb_getparms(struct net_device *dev, struct lapb_parms_struct *parms); extern int lapb_setparms(struct net_device *dev, struct lapb_parms_struct *parms); -- cgit v1.2.2 From 9927c893f4442f5045a919ff7c78113ded9c709e Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 6 Sep 2011 13:48:20 +0000 Subject: ethtool: Make struct ethtool_rxnfc kernel-doc more self-consistent Refer consistently to 'classification rules' or just 'rules' rather than 'filter specifications' or 'filter rules'. Refer consistently to rule 'locations' and not 'indices'. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 8571f18c38a6..30a4f9083a44 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -446,7 +446,7 @@ struct ethtool_flow_ext { }; /** - * struct ethtool_rx_flow_spec - specification for RX flow filter + * struct ethtool_rx_flow_spec - classification rule for RX flows * @flow_type: Type of match to perform, e.g. %TCP_V4_FLOW * @h_u: Flow fields to match (dependent on @flow_type) * @h_ext: Additional fields to match @@ -456,7 +456,7 @@ struct ethtool_flow_ext { * includes the %FLOW_EXT flag. * @ring_cookie: RX ring/queue index to deliver to, or %RX_CLS_FLOW_DISC * if packets should be discarded - * @location: Index of filter in hardware table + * @location: Location of rule in the table */ struct ethtool_rx_flow_spec { __u32 flow_type; @@ -475,9 +475,9 @@ struct ethtool_rx_flow_spec { * %ETHTOOL_GRXCLSRLALL, %ETHTOOL_SRXCLSRLDEL or %ETHTOOL_SRXCLSRLINS * @flow_type: Type of flow to be affected, e.g. %TCP_V4_FLOW * @data: Command-dependent value - * @fs: Flow filter specification + * @fs: Flow classification rule * @rule_cnt: Number of rules to be affected - * @rule_locs: Array of valid rule indices + * @rule_locs: Array of valid rule locations * * For %ETHTOOL_GRXFH and %ETHTOOL_SRXFH, @data is a bitmask indicating * the fields included in the flow hash, e.g. %RXH_IP_SRC. The following @@ -489,20 +489,19 @@ struct ethtool_rx_flow_spec { * For %ETHTOOL_GRXCLSRLCNT, @rule_cnt is set to the number of defined * rules on return. * - * For %ETHTOOL_GRXCLSRULE, @fs.@location specifies the index of an - * existing filter rule on entry and @fs contains the rule on return. + * For %ETHTOOL_GRXCLSRULE, @fs.@location specifies the location of an + * existing rule on entry and @fs contains the rule on return. * * For %ETHTOOL_GRXCLSRLALL, @rule_cnt specifies the array size of the * user buffer for @rule_locs on entry. On return, @data is the size - * of the filter table and @rule_locs contains the indices of the + * of the rule table and @rule_locs contains the locations of the * defined rules. * - * For %ETHTOOL_SRXCLSRLINS, @fs specifies the filter rule to add or - * update. @fs.@location specifies the index to use and must not be - * ignored. + * For %ETHTOOL_SRXCLSRLINS, @fs specifies the rule to add or update. + * @fs.@location specifies the location to use and must not be ignored. * - * For %ETHTOOL_SRXCLSRLDEL, @fs.@location specifies the index of an - * existing filter rule on entry. + * For %ETHTOOL_SRXCLSRLDEL, @fs.@location specifies the location of an + * existing rule on entry. * * Implementation of indexed classification rules generally requires a * TCAM. -- cgit v1.2.2 From 434495c50ea786b89eca7f7af2bac424658a76ee Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 6 Sep 2011 13:48:56 +0000 Subject: ethtool: Explicitly state that RX NFC rule locations are priorities The location of an RX flow classification rule is needed to identify it for retrieval, replacement or deletion. However it also defines the priority of the rule in the case that a flow is matched by multiple rules. This is what I intended to imply by referring to the use of a TCAM, commonly used to implement that behaviour. However there are other ways this can be done, and it is better to specify this explicitly. Further, I want to add the option for automatic selection of rule locations. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 30a4f9083a44..b5d189367a02 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -456,7 +456,9 @@ struct ethtool_flow_ext { * includes the %FLOW_EXT flag. * @ring_cookie: RX ring/queue index to deliver to, or %RX_CLS_FLOW_DISC * if packets should be discarded - * @location: Location of rule in the table + * @location: Location of rule in the table. Locations must be + * numbered such that a flow matching multiple rules will be + * classified according to the first (lowest numbered) rule. */ struct ethtool_rx_flow_spec { __u32 flow_type; @@ -502,9 +504,6 @@ struct ethtool_rx_flow_spec { * * For %ETHTOOL_SRXCLSRLDEL, @fs.@location specifies the location of an * existing rule on entry. - * - * Implementation of indexed classification rules generally requires a - * TCAM. */ struct ethtool_rxnfc { __u32 cmd; -- cgit v1.2.2 From 815c7db5c809ea3d5735de3131ecdf758b0e14ff Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 6 Sep 2011 13:49:12 +0000 Subject: ethtool: Clean up definitions of rule location arrays in RX NFC Correct the description of ethtool_rxnfc::rule_locs; it is an array of currently used locations, not all possible valid locations. Add note that drivers must not use ethtool_rxnfc::rule_locs. The rule_locs argument to ethtool_ops::get_rxnfc is either NULL or a pointer to an array of u32, so change the parameter type accordingly. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index b5d189367a02..5d4a06accd82 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -479,7 +479,7 @@ struct ethtool_rx_flow_spec { * @data: Command-dependent value * @fs: Flow classification rule * @rule_cnt: Number of rules to be affected - * @rule_locs: Array of valid rule locations + * @rule_locs: Array of used rule locations * * For %ETHTOOL_GRXFH and %ETHTOOL_SRXFH, @data is a bitmask indicating * the fields included in the flow hash, e.g. %RXH_IP_SRC. The following @@ -497,7 +497,8 @@ struct ethtool_rx_flow_spec { * For %ETHTOOL_GRXCLSRLALL, @rule_cnt specifies the array size of the * user buffer for @rule_locs on entry. On return, @data is the size * of the rule table and @rule_locs contains the locations of the - * defined rules. + * defined rules. Drivers must use the second parameter to get_rxnfc() + * instead of @rule_locs. * * For %ETHTOOL_SRXCLSRLINS, @fs specifies the rule to add or update. * @fs.@location specifies the location to use and must not be ignored. @@ -939,7 +940,7 @@ struct ethtool_ops { int (*set_priv_flags)(struct net_device *, u32); int (*get_sset_count)(struct net_device *, int); int (*get_rxnfc)(struct net_device *, - struct ethtool_rxnfc *, void *); + struct ethtool_rxnfc *, u32 *rule_locs); int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *); int (*flash_device)(struct net_device *, struct ethtool_flash *); int (*reset)(struct net_device *, u32 *); -- cgit v1.2.2 From 473e64ee4603671efa1e0785418e56e9ffdfc47b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 6 Sep 2011 13:52:47 +0000 Subject: ethtool: Update ethtool_rxnfc::rule_cnt on return from ETHTOOL_GRXCLSRLALL A user-space process must use ETHTOOL_GRXCLSRLCNT to find the number of classification rules, then allocate a buffer of the right size, then use ETHTOOL_GRXCLSRLALL to fill the buffer. If some other process inserts or deletes a rule between those two operations, the user buffer might turn out to be the wrong size. If it's too small, the return value will be -EMSGSIZE. But if it's too large, there is no indication of this. Fix this by updating the rule_cnt field on return. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 5d4a06accd82..45f00b61c096 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -496,9 +496,9 @@ struct ethtool_rx_flow_spec { * * For %ETHTOOL_GRXCLSRLALL, @rule_cnt specifies the array size of the * user buffer for @rule_locs on entry. On return, @data is the size - * of the rule table and @rule_locs contains the locations of the - * defined rules. Drivers must use the second parameter to get_rxnfc() - * instead of @rule_locs. + * of the rule table, @rule_cnt is the number of defined rules, and + * @rule_locs contains the locations of the defined rules. Drivers + * must use the second parameter to get_rxnfc() instead of @rule_locs. * * For %ETHTOOL_SRXCLSRLINS, @fs specifies the rule to add or update. * @fs.@location specifies the location to use and must not be ignored. -- cgit v1.2.2 From e538dfdae85244fd2c4231725d82cc1f1bc4942c Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Tue, 30 Aug 2011 17:11:19 +0200 Subject: usb: Provide usb_speed_string() function In a few places in the kernel, the code prints a human-readable USB device speed (eg. "high speed"). This involves a switch statement sometimes wrapped around in ({ ... }) block leading to code repetition. To mitigate this issue, this commit introduces usb_speed_string() function, which returns a human-readable name of provided speed. It also changes a few places switch was used to use this new function. This changes a bit the way the speed is printed in few instances at the same time standardising it. Signed-off-by: Michal Nazarewicz Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 1ded281eff88..f32a64e57f97 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -868,6 +868,18 @@ enum usb_device_speed { USB_SPEED_SUPER, /* usb 3.0 */ }; +#ifdef __KERNEL__ + +/** + * usb_speed_string() - Returns human readable-name of the speed. + * @speed: The speed to return human-readable name for. If it's not + * any of the speeds defined in usb_device_speed enum, string for + * USB_SPEED_UNKNOWN will be returned. + */ +extern const char *usb_speed_string(enum usb_device_speed speed); + +#endif + enum usb_device_state { /* NOTATTACHED isn't in the USB spec, and this state acts * the same as ATTACHED ... but it's clearer this way. -- cgit v1.2.2 From 4a64e49df282d55754f9bbb5f14ca4d783128df4 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Thu, 15 Sep 2011 16:44:48 -0500 Subject: drivers/video: fsl-diu-fb: remove unused ioctls Remove some unused ioctl commands, and treat those commands as unsupported instead of ignored. Also remove struct mfb_alpha, which isn't used by any ioctl. It may have been once intended for MFB_SET_ALPHA, but that ioctl uses a different data structure. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index daa9952d2174..5ebffa69a0f6 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -27,11 +27,6 @@ #include -struct mfb_alpha { - int enable; - int alpha; -}; - struct mfb_chroma_key { int enable; __u8 red_max; -- cgit v1.2.2 From 251b9b0d403f61f507155697a459038b2ee3336c Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Thu, 15 Sep 2011 16:44:57 -0500 Subject: drivers/video: fsl-diu-fb: the video buffer is not I/O memory The video buffer is not uncached memory-mapped I/O, so don't tag the virtual address as __iomem. It's also not a u8*. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index 5ebffa69a0f6..35ac0c53975c 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -162,7 +162,7 @@ struct diu_hw { }; struct diu_addr { - __u8 __iomem *vaddr; /* Virtual address */ + void *vaddr; /* Virtual address */ dma_addr_t paddr; /* Physical address */ __u32 offset; }; -- cgit v1.2.2 From 2b7a905dd0d24d14a1099653ba63b7113a82fc54 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Thu, 15 Sep 2011 16:44:58 -0500 Subject: drivers/video: fsl-diu-fb: remove unusued MEM_ALLOC_THRESHOLD If there was ever any code that used MEM_ALLOC_THRESHOLD, it was removed a long time ago. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index 35ac0c53975c..df23f599f5db 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -20,11 +20,6 @@ #ifndef __FSL_DIU_FB_H__ #define __FSL_DIU_FB_H__ -/* Arbitrary threshold to determine the allocation method - * See mpc8610fb_set_par(), map_video_memory(), and unmap_video_memory() - */ -#define MEM_ALLOC_THRESHOLD (1024*768*4+32) - #include struct mfb_chroma_key { -- cgit v1.2.2 From 937bb6e4c676fecbfbc1939b942241c3f27bf5d8 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 24 Jun 2011 13:56:15 +0200 Subject: serial: sh-sci: don't filter on DMA device, use only channel ID On some sh-mobile systems there are more than one DMA controllers, that can be used for serial ports. Specifying a DMA device in sh-sci platform data unnecessarily restricts the driver to only use one DMA controller. Signed-off-by: Guennadi Liakhovetski [Fixed the trivial conflict in include/linux/serial_sci.h] Signed-off-by: Vinod Koul --- include/linux/serial_sci.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 8bffe9ae2ca0..0efa1f10bc2b 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -131,8 +131,6 @@ struct plat_sci_port { struct plat_sci_port_ops *ops; - struct device *dma_dev; - unsigned int dma_slave_tx; unsigned int dma_slave_rx; }; -- cgit v1.2.2 From b7f69d9d4283cfbbf7458962cf9bdba6463b831d Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 5 Aug 2011 15:32:43 +0530 Subject: dmaengine/amba-pl08x: Add support for sg len greater than one for slave transfers Untill now, sg_len greater than one is not supported. This patch adds support to do that. Note: Still, if peripheral is flow controller, sg_len can't be greater that one. Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/amba/pl08x.h | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index a22662c93981..9eabffbc4e50 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -105,13 +105,25 @@ struct pl08x_phy_chan { struct pl08x_dma_chan *serving; }; +/** + * struct pl08x_sg - structure containing data per sg + * @src_addr: src address of sg + * @dst_addr: dst address of sg + * @len: transfer len in bytes + * @node: node for txd's dsg_list + */ +struct pl08x_sg { + dma_addr_t src_addr; + dma_addr_t dst_addr; + size_t len; + struct list_head node; +}; + /** * struct pl08x_txd - wrapper for struct dma_async_tx_descriptor * @tx: async tx descriptor * @node: node for txd list for channels - * @src_addr: src address of txd - * @dst_addr: dst address of txd - * @len: transfer len in bytes + * @dsg_list: list of children sg's * @direction: direction of transfer * @llis_bus: DMA memory address (physical) start for the LLIs * @llis_va: virtual memory address start for the LLIs @@ -121,10 +133,8 @@ struct pl08x_phy_chan { struct pl08x_txd { struct dma_async_tx_descriptor tx; struct list_head node; + struct list_head dsg_list; enum dma_data_direction direction; - dma_addr_t src_addr; - dma_addr_t dst_addr; - size_t len; dma_addr_t llis_bus; struct pl08x_lli *llis_va; /* Default cctl value for LLIs */ -- cgit v1.2.2 From 6249687f76b69cc0b2ad34636f4a18d693ef3262 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 19 Sep 2011 11:35:58 -0400 Subject: tracing: Add a counter clock for those that do not trust clocks When debugging tight race conditions, it can be helpful to have a synchronized tracing method. Although in most cases the global clock provides this functionality, if timings is not the issue, it is more comforting to know that the order of events really happened in a precise order. Instead of using a clock, add a "counter" that is simply an incrementing atomic 64bit counter that orders the events as they are perceived to happen. The trace_clock_counter() is added from the attempt by Peter Zijlstra trying to convert the trace_clock_global() to it. I took Peter's counter code and made trace_clock_counter() instead, and added it to the choice of clocks. Just echo counter > /debug/tracing/trace_clock to activate it. Requested-by: Thomas Gleixner Requested-by: Peter Zijlstra Reviewed-By: Valdis Kletnieks Signed-off-by: Steven Rostedt --- include/linux/trace_clock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/trace_clock.h b/include/linux/trace_clock.h index 7a8130384087..4eb490237d4c 100644 --- a/include/linux/trace_clock.h +++ b/include/linux/trace_clock.h @@ -15,5 +15,6 @@ extern u64 notrace trace_clock_local(void); extern u64 notrace trace_clock(void); extern u64 notrace trace_clock_global(void); +extern u64 notrace trace_clock_counter(void); #endif /* _LINUX_TRACE_CLOCK_H */ -- cgit v1.2.2 From 9fabe24e9b1af84509b842731d2beaf85e66681e Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 19 Sep 2011 14:34:00 +0100 Subject: regmap: Introduce caching support This patch introduces caching support for regmap. The regcache API has evolved essentially out of ASoC soc-cache so most of the actual caching types (except LZO) have been tested in the past. The purpose of regcache is to optimize in time and space the handling of register caches. Time optimization is achieved by not having to go over a slow bus like I2C to read the value of a register, instead it is cached locally in memory and can be retrieved faster. Regarding space optimization, some of the cache types are better at packing the caches, for e.g. the rbtree and the LZO caches. By doing this the sacrifice in time still wins over doing I2C transactions. Signed-off-by: Dimitris Papastamos Tested-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- include/linux/regmap.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 18d4afaac166..9d8029449292 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -20,6 +20,11 @@ struct i2c_client; struct spi_device; +/* An enum of all the supported cache types */ +enum regcache_type { + REGCACHE_NONE, +}; + /** * Default value for a register. We use an array of structs rather * than a simple array as many modern devices have very sparse @@ -59,6 +64,11 @@ struct reg_default { * @write_flag_mask: Mask to be set in the top byte of the register when doing * a write. If both read_flag_mask and write_flag_mask are * empty the regmap_bus default masks are used. + * + * @cache_type: The actual cache type. + * @reg_defaults_raw: Power on reset values for registers (for use with + * register cache support). + * @num_reg_defaults_raw: Number of elements in reg_defaults_raw. */ struct regmap_config { int reg_bits; @@ -71,7 +81,10 @@ struct regmap_config { unsigned int max_register; struct reg_default *reg_defaults; - int num_reg_defaults; + unsigned int num_reg_defaults; + enum regcache_type cache_type; + const void *reg_defaults_raw; + unsigned int num_reg_defaults_raw; u8 read_flag_mask; u8 write_flag_mask; -- cgit v1.2.2 From 195af65ca92179ac2b524d35d732dc6fecec2744 Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 19 Sep 2011 14:34:01 +0100 Subject: regmap: Add the indexed cache support This is the simplest form of a cache available in regcache. Any registers whose default value is 0 are ignored. If any of those registers are modified in the future, they will be placed in the cache on demand. The cache layout is essentially using the provided register defaults by the regcache core directly and does not re-map it to another representation. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 9d8029449292..ae6d3a4cee97 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -23,6 +23,7 @@ struct spi_device; /* An enum of all the supported cache types */ enum regcache_type { REGCACHE_NONE, + REGCACHE_INDEXED, }; /** -- cgit v1.2.2 From 28644c809f44498b8cd91d00b4cdb09e63b99843 Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 19 Sep 2011 14:34:02 +0100 Subject: regmap: Add the rbtree cache support This patch adds support for the rbtree cache compression type. Each rbnode manages a variable length block of registers. There can be no two nodes with overlapping blocks. Each block has a base register and a currently top register, all the other registers, if any, lie in between these two and in ascending order. The reasoning behind the construction of this rbtree is simple. In the snd_soc_rbtree_cache_init() function, we iterate over the register defaults provided by the regcache core. For each register value that is non-zero we insert it in the rbtree. In order to determine in which rbnode we need to add the register, we first look if there is another register already added that is adjacent to the one we are about to add. If that is the case we append it in that rbnode block, otherwise we create a new rbnode with a single register in its block and add it to the tree. There are various optimizations across the implementation to speed up lookups by caching the most recently used rbnode. Signed-off-by: Dimitris Papastamos Tested-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index ae6d3a4cee97..63c4a5e126e9 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -24,6 +24,7 @@ struct spi_device; enum regcache_type { REGCACHE_NONE, REGCACHE_INDEXED, + REGCACHE_RBTREE, }; /** -- cgit v1.2.2 From 2cbbb579bcbe3e11baf1c59920dcd5a780b80447 Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 19 Sep 2011 14:34:03 +0100 Subject: regmap: Add the LZO cache support This patch adds support for LZO compression when storing the register cache. For a typical device whose register map would normally occupy 25kB or 50kB by using the LZO compression technique, one can get down to ~5-7kB. There might be a performance penalty associated with each individual read/write due to decompressing/compressing the underlying cache, however that should not be noticeable. These memory benefits depend on whether the target architecture can get rid of the memory occupied by the original register defaults cache which is marked as __devinitconst. Nevertheless there will be some memory gain even if the target architecture can't get rid of the original register map, this should be around ~30-32kB instead of 50kB. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 63c4a5e126e9..cae69e637dff 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -25,6 +25,7 @@ enum regcache_type { REGCACHE_NONE, REGCACHE_INDEXED, REGCACHE_RBTREE, + REGCACHE_LZO }; /** -- cgit v1.2.2 From 39a58439d6006c48941511276c0041f56352c529 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 19 Sep 2011 18:21:49 +0100 Subject: regmap: Prototype regcache_sync() Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index cae69e637dff..63b30752adfd 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -140,4 +140,5 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, int regmap_update_bits(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val); +int regcache_sync(struct regmap *map); #endif -- cgit v1.2.2 From 92afb286d744511f51a05f8acb6c111d05737617 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 19 Sep 2011 18:22:14 +0100 Subject: regmap: Allow drivers to control cache_only flag Signed-off-by: Mark Brown --- include/linux/regmap.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 63b30752adfd..76ac255a17a5 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -141,4 +141,6 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val); int regcache_sync(struct regmap *map); +void regcache_cache_only(struct regmap *map, bool enable); + #endif -- cgit v1.2.2 From 0c28ec587a2f061b93a98ac02a53b4152cbe48f4 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Thu, 15 Sep 2011 11:53:01 +0300 Subject: cfg80211: add cfg80211_find_vendor_ie() function Add function to find vendor-specific ie (along with vendor-specific ie struct definition and P2P OUI values) Signed-off-by: Eliad Peller Reviewed-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 72f3933938c0..b5e0a5c344fd 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -777,6 +777,13 @@ struct ieee80211_mmie { u8 mic[8]; } __attribute__ ((packed)); +struct ieee80211_vendor_ie { + u8 element_id; + u8 len; + u8 oui[3]; + u8 oui_type; +} __packed; + /* Control frames */ struct ieee80211_rts { __le16 frame_control; @@ -1470,6 +1477,9 @@ enum ieee80211_sa_query_action { #define WLAN_PMKID_LEN 16 +#define WLAN_OUI_WFA 0x506f9a +#define WLAN_OUI_TYPE_WFA_P2P 9 + /* * WMM/802.11e Tspec Element */ -- cgit v1.2.2 From 3861b2c5d90b219ee772b5a1d1a32ee630564121 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Fri, 16 Sep 2011 12:33:58 +0200 Subject: bcma: cc: export more control functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index a7ae33d06f24..1526d965ed06 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -378,4 +378,13 @@ u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value); /* PMU support */ extern void bcma_pmu_init(struct bcma_drv_cc *cc); +extern void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset, + u32 value); +extern void bcma_chipco_pll_maskset(struct bcma_drv_cc *cc, u32 offset, + u32 mask, u32 set); +extern void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc, + u32 offset, u32 mask, u32 set); +extern void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, + u32 offset, u32 mask, u32 set); + #endif /* LINUX_BCMA_DRIVER_CC_H_ */ -- cgit v1.2.2 From c9df56b48e4ff003eaebd680ec7a45342dcd03ea Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Fri, 16 Sep 2011 18:56:23 +0300 Subject: cfg80211/nl80211: Add PMKSA caching candidate event When the driver (or most likely firmware) decides which AP to use for roaming based on internal scan result processing, user space needs to be notified of PMKSA caching candidates to allow RSN pre-authentication to be used. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index f17307590e61..460b12a8ef66 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -499,6 +499,9 @@ * this command may also be sent by the driver as an MLME event to * inform userspace of the new replay counter. * + * @NL80211_CMD_PMKSA_CANDIDATE: This is used as an event to inform userspace + * of PMKSA caching dandidates. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -623,6 +626,8 @@ enum nl80211_commands { NL80211_CMD_SET_REKEY_OFFLOAD, + NL80211_CMD_PMKSA_CANDIDATE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -1070,6 +1075,9 @@ enum nl80211_commands { * @NL80211_ATTR_ROAM_SUPPORT: Indicates whether the firmware is capable of * roaming to another AP in the same ESS if the signal lever is low. * + * @NL80211_ATTR_PMKSA_CANDIDATE: Nested attribute containing the PMKSA caching + * candidate information, see &enum nl80211_pmksa_candidate_attr. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1288,6 +1296,8 @@ enum nl80211_attrs { NL80211_ATTR_SCHED_SCAN_MATCH, NL80211_ATTR_MAX_MATCH_SETS, + NL80211_ATTR_PMKSA_CANDIDATE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -2558,4 +2568,27 @@ enum nl80211_sta_wme_attr { NL80211_STA_WME_MAX = __NL80211_STA_WME_AFTER_LAST - 1 }; +/** + * enum nl80211_pmksa_candidate_attr - attributes for PMKSA caching candidates + * @__NL80211_PMKSA_CANDIDATE_INVALID: invalid number for nested attributes + * @NL80211_PMKSA_CANDIDATE_INDEX: candidate index (u32; the smaller, the higher + * priority) + * @NL80211_PMKSA_CANDIDATE_BSSID: candidate BSSID (6 octets) + * @NL80211_PMKSA_CANDIDATE_PREAUTH: RSN pre-authentication supported (flag) + * @NUM_NL80211_PMKSA_CANDIDATE: number of PMKSA caching candidate attributes + * (internal) + * @MAX_NL80211_PMKSA_CANDIDATE: highest PMKSA caching candidate attribute + * (internal) + */ +enum nl80211_pmksa_candidate_attr { + __NL80211_PMKSA_CANDIDATE_INVALID, + NL80211_PMKSA_CANDIDATE_INDEX, + NL80211_PMKSA_CANDIDATE_BSSID, + NL80211_PMKSA_CANDIDATE_PREAUTH, + + /* keep last */ + NUM_NL80211_PMKSA_CANDIDATE, + MAX_NL80211_PMKSA_CANDIDATE = NUM_NL80211_PMKSA_CANDIDATE - 1 +}; + #endif /* __LINUX_NL80211_H */ -- cgit v1.2.2 From a69882aec380512e5d6acff9bfc4336dc5162bb4 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 15 Sep 2011 15:39:24 +0300 Subject: MFD: twl6040: Add accessor for revision ID For client driver to use, if they need chip resvision information. Signed-off-by: Peter Ujfalusi Acked-by: Samuel Ortiz Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 4c806f6d663e..cb3b82207120 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -225,4 +225,9 @@ unsigned int twl6040_get_sysclk(struct twl6040 *twl6040); int twl6040_irq_init(struct twl6040 *twl6040); void twl6040_irq_exit(struct twl6040 *twl6040); +static inline int twl6040_get_revid(struct twl6040 *twl6040) +{ + return twl6040->rev; +} + #endif /* End of __TWL6040_CODEC_H__ */ -- cgit v1.2.2 From a52762eee97d42344691c190cf8786dd9edde4d7 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 15 Sep 2011 15:39:27 +0300 Subject: ASoC: twl6040: Chip initialization cleanup There is no need to write to the vio registers at probe time, since most them either read only, or shared with MFD or not used. On the other hand it is a good idea to updated the ASICREV register in the cache at this time. After power up we need to restore some registers. Clean up the list to contain only the registers we are going to restore. Signed-off-by: Peter Ujfalusi Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index cb3b82207120..ec1ec794fa23 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -70,9 +70,6 @@ #define TWL6040_CACHEREGNUM (TWL6040_REG_STATUS + 1) -#define TWL6040_VIOREGNUM 18 -#define TWL6040_VDDREGNUM 21 - /* INTID (0x03) fields */ #define TWL6040_THINT 0x01 -- cgit v1.2.2 From 3a8f7558e475b68254d8bc3a2211f3f89bf67a71 Mon Sep 17 00:00:00 2001 From: Milton Miller Date: Fri, 24 Jun 2011 09:05:23 +0000 Subject: dma-mapping: Add get_required_mask if arch overrides default If an architecture sets ARCH_HAS_DMA_GET_REQUIRED_MASK and has settable dma_map_ops, the required mask may change by the ops implementation. For example, a system that always has an mmu inline may only require 32 bits while a swiotlb would desire bits to cover all of memory. Therefore add the field if the architecture does not use the generic definition of dma_get_required_mask. The first use will by by powerpc. Note that this does add some dependency on the order in which files are visible here. Signed-off-by: Milton Miller Signed-off-by: Nishanth Aravamudan Signed-off-by: Benjamin Herrenschmidt Acked-by: FUJITA Tomonori --- include/linux/dma-mapping.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 347fdc32177a..aa32fecd1d34 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -41,6 +41,9 @@ struct dma_map_ops { int (*mapping_error)(struct device *dev, dma_addr_t dma_addr); int (*dma_supported)(struct device *dev, u64 mask); int (*set_dma_mask)(struct device *dev, u64 mask); +#ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK + u64 (*get_required_mask)(struct device *dev); +#endif int is_phys; }; -- cgit v1.2.2 From 590e4d857153c5d4cf86052cdfd42cf9b0779841 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sun, 24 Jul 2011 16:33:13 +0000 Subject: sched: Allow SD_NODES_PER_DOMAIN to be overridden We want to override the default value of SD_NODES_PER_DOMAIN on ppc64, so move it into linux/topology.h. Signed-off-by: Anton Blanchard Acked-by: Peter Zijlstra Signed-off-by: Benjamin Herrenschmidt --- include/linux/topology.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/topology.h b/include/linux/topology.h index fc839bfa7935..e26db031303b 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -201,6 +201,10 @@ int arch_update_cpu_topology(void); .balance_interval = 64, \ } +#ifndef SD_NODES_PER_DOMAIN +#define SD_NODES_PER_DOMAIN 16 +#endif + #ifdef CONFIG_SCHED_BOOK #ifndef SD_BOOK_INIT #error Please define an appropriate SD_BOOK_INIT in include/asm/topology.h!!! -- cgit v1.2.2 From 523d9cfbb2094e095ff08a01c4eac10cc7d287c3 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 15 Sep 2011 18:54:53 +0200 Subject: mfd: Support software initiated shutdown of WM831x PMICs In systems where there is no hardware signal from the processor to the PMIC to initiate the final power off sequence we must initiate the shutdown with a register write to the PMIC. Support such systems in the driver. Since this may prevent a full shutdown of the system platform data is used to enable the feature. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/core.h | 3 +++ include/linux/mfd/wm831x/pdata.h | 3 +++ 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 44acdb25681b..ed8fe0d04097 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -371,6 +371,8 @@ struct wm831x { int irq_masks_cur[WM831X_NUM_IRQ_REGS]; /* Currently active value */ int irq_masks_cache[WM831X_NUM_IRQ_REGS]; /* Cached hardware value */ + bool soft_shutdown; + /* Chip revision based flags */ unsigned has_gpio_ena:1; /* Has GPIO enable bit */ unsigned has_cs_sts:1; /* Has current sink status bit */ @@ -409,6 +411,7 @@ int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq); void wm831x_device_exit(struct wm831x *wm831x); int wm831x_device_suspend(struct wm831x *wm831x); +void wm831x_device_shutdown(struct wm831x *wm831x); int wm831x_irq_init(struct wm831x *wm831x, int irq); void wm831x_irq_exit(struct wm831x *wm831x); void wm831x_auxadc_init(struct wm831x *wm831x); diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index 0ba24599fe51..1d7a3f7b3b5d 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -123,6 +123,9 @@ struct wm831x_pdata { /** Disable the touchscreen */ bool disable_touch; + /** The driver should initiate a power off sequence during shutdown */ + bool soft_shutdown; + int irq_base; int gpio_base; int gpio_defaults[WM831X_GPIO_NUM]; -- cgit v1.2.2 From 8b3fe7b591b3c50061a8701f8eda14033420577b Mon Sep 17 00:00:00 2001 From: Ilan Elias Date: Sun, 18 Sep 2011 11:19:33 +0300 Subject: NFC: Add dev_up and dev_down control operations Add 2 new nfc control operations: dev_up to turn on the nfc device dev_down to turn off the nfc device Signed-off-by: Ilan Elias Signed-off-by: John W. Linville --- include/linux/nfc.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfc.h b/include/linux/nfc.h index c525e0b5876b..36cb955b05cc 100644 --- a/include/linux/nfc.h +++ b/include/linux/nfc.h @@ -39,6 +39,10 @@ * * @NFC_CMD_GET_DEVICE: request information about a device (requires * %NFC_ATTR_DEVICE_INDEX) or dump request to get a list of all nfc devices + * @NFC_CMD_DEV_UP: turn on the nfc device + * (requires %NFC_ATTR_DEVICE_INDEX) + * @NFC_CMD_DEV_DOWN: turn off the nfc device + * (requires %NFC_ATTR_DEVICE_INDEX) * @NFC_CMD_START_POLL: start polling for targets using the given protocols * (requires %NFC_ATTR_DEVICE_INDEX and %NFC_ATTR_PROTOCOLS) * @NFC_CMD_STOP_POLL: stop polling for targets (requires @@ -56,6 +60,8 @@ enum nfc_commands { NFC_CMD_UNSPEC, NFC_CMD_GET_DEVICE, + NFC_CMD_DEV_UP, + NFC_CMD_DEV_DOWN, NFC_CMD_START_POLL, NFC_CMD_STOP_POLL, NFC_CMD_GET_TARGET, -- cgit v1.2.2 From d24f22f3df9ac3f3af95e850df0b576d41bd3cfe Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 20 Sep 2011 14:50:00 -0400 Subject: ip6_tunnel: add optional fwmark inherit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add IP6_TNL_F_USE_ORIG_FWMARK to ip6_tunnel, so that ip6_tnl_xmit2() makes a route lookup taking into account skb->fwmark and doesnt cache lookup result. This permits more flexibility in policies and firewall setups. To setup such a tunnel, "fwmark inherit" option should be added to "ip -f inet6 tunnel" command. Reported-by: Anders Franzen CC: Hans Schillström Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/ip6_tunnel.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ip6_tunnel.h b/include/linux/ip6_tunnel.h index acb9ad684d63..bf22b0317902 100644 --- a/include/linux/ip6_tunnel.h +++ b/include/linux/ip6_tunnel.h @@ -16,6 +16,8 @@ #define IP6_TNL_F_MIP6_DEV 0x8 /* copy DSCP from the outer packet */ #define IP6_TNL_F_RCV_DSCP_COPY 0x10 +/* copy fwmark from inner packet */ +#define IP6_TNL_F_USE_ORIG_FWMARK 0x20 struct ip6_tnl_parm { char name[IFNAMSIZ]; /* name of tunnel device */ -- cgit v1.2.2 From b78049831ffed65f0b4e61f69df14f3ab17922cb Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 20 Sep 2011 11:23:49 -0400 Subject: lib: add error checking to hex2bin hex2bin converts a hexadecimal string to its binary representation. The original version of hex2bin did not do any error checking. This patch adds error checking and returns the result. Changelog v1: - removed unpack_hex_byte() - changed return code from boolean to int Changelog: - use the new unpack_hex_byte() - add __must_check compiler option (Andy Shevchenko's suggestion) - change function API to return error checking result (based on Tetsuo Handa's initial patch) Signed-off-by: Mimi Zohar Acked-by: Andy Shevchenko --- include/linux/kernel.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 46ac9a50528d..8eefcf7e95eb 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -382,7 +382,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte) } extern int hex_to_bin(char ch); -extern void hex2bin(u8 *dst, const char *src, size_t count); +extern int __must_check hex2bin(u8 *dst, const char *src, size_t count); /* * General tracing related utility functions - trace_printk(), -- cgit v1.2.2 From 5eb9f900e5b524682ace6771529826c4ce26b6ea Mon Sep 17 00:00:00 2001 From: Michael Tandy Date: Tue, 20 Sep 2011 22:42:51 -0700 Subject: Input: adxl34x - documentation cleanup This patch clarifies a few bits of documentation in the header file for the adxl34x driver. Signed-off-by: Michael Tandy Acked-by: Michael Hennerich Signed-off-by: Dmitry Torokhov --- include/linux/input/adxl34x.h | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input/adxl34x.h b/include/linux/input/adxl34x.h index df00d998a44a..57e01a7cb006 100644 --- a/include/linux/input/adxl34x.h +++ b/include/linux/input/adxl34x.h @@ -30,8 +30,9 @@ struct adxl34x_platform_data { * Y, or Z participation in Tap detection. A '0' excludes the * selected axis from participation in Tap detection. * Setting the SUPPRESS bit suppresses Double Tap detection if - * acceleration greater than tap_threshold is present between - * taps. + * acceleration greater than tap_threshold is present during the + * tap_latency period, i.e. after the first tap but before the + * opening of the second tap window. */ #define ADXL_SUPPRESS (1 << 3) @@ -226,13 +227,13 @@ struct adxl34x_platform_data { * detection will begin and prevent the detection of activity. This * bit serially links the activity and inactivity functions. When '0' * the inactivity and activity functions are concurrent. Additional - * information can be found in the Application section under Link - * Mode. + * information can be found in the ADXL34x datasheet's Application + * section under Link Mode. * AUTO_SLEEP: A '1' sets the ADXL34x to switch to Sleep Mode * when inactivity (acceleration has been below inactivity_threshold * for at least inactivity_time) is detected and the LINK bit is set. - * A '0' disables automatic switching to Sleep Mode. See SLEEP - * for further description. + * A '0' disables automatic switching to Sleep Mode. See the + * Sleep Bit section of the ADXL34x datasheet for more information. */ #define ADXL_LINK (1 << 5) @@ -266,6 +267,12 @@ struct adxl34x_platform_data { u8 watermark; + /* + * When acceleration measurements are received from the ADXL34x + * events are sent to the event subsystem. The following settings + * select the event type and event code for new x, y and z axis data + * respectively. + */ u32 ev_type; /* EV_ABS or EV_REL */ u32 ev_code_x; /* ABS_X,Y,Z or REL_X,Y,Z */ @@ -289,7 +296,7 @@ struct adxl34x_platform_data { u32 ev_code_act_inactivity; /* EV_KEY */ /* - * Use ADXL34x INT2 instead of INT1 + * Use ADXL34x INT2 pin instead of INT1 pin for interrupt output */ u8 use_int2; -- cgit v1.2.2 From 7387ce773256f446bdd0280b2449b635441f906e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:30:51 -0700 Subject: mtd: define `mtd_is_*()' functions These functions can be used instead of referencing -EUCLEAN and -EBADMSG all over the place. They should help make code a little bit more readable. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 37d082793f62..4bce1eb952cf 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -348,4 +348,16 @@ void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); void mtd_erase_callback(struct erase_info *instr); +static inline int mtd_is_bitflip(int err) { + return err == -EUCLEAN; +} + +static inline int mtd_is_eccerr(int err) { + return err == -EBADMSG; +} + +static inline int mtd_is_bitflip_or_eccerr(int err) { + return mtd_is_bitflip(err) || mtd_is_eccerr(err); +} + #endif /* __MTD_MTD_H__ */ -- cgit v1.2.2 From 75df713627f28f88b901b329c8857747545fd4ab Mon Sep 17 00:00:00 2001 From: Suresh Jayaraman Date: Wed, 21 Sep 2011 10:00:16 +0200 Subject: block: document blk-plug Thus spake Andrew Morton: "And I have the usual maintainability whine. If someone comes up to vmscan.c and sees it calling blk_start_plug(), how are they supposed to work out why that call is there? They go look at the blk_start_plug() definition and it is undocumented. I think we can do better than this?" Adapted from the LWN article - http://lwn.net/Articles/438256/ by Jens Axboe and from an earlier attempt by Shaohua Li to document blk-plug. [akpm@linux-foundation.org: grammatical and spelling tweaks] Signed-off-by: Suresh Jayaraman Cc: Shaohua Li Cc: Jonathan Corbet Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c712efdafc3f..1978655faa3b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -860,17 +860,23 @@ struct request_queue *blk_alloc_queue_node(gfp_t, int); extern void blk_put_queue(struct request_queue *); /* - * Note: Code in between changing the blk_plug list/cb_list or element of such - * lists is preemptable, but such code can't do sleep (or be very careful), - * otherwise data is corrupted. For details, please check schedule() where - * blk_schedule_flush_plug() is called. + * blk_plug permits building a queue of related requests by holding the I/O + * fragments for a short period. This allows merging of sequential requests + * into single larger request. As the requests are moved from a per-task list to + * the device's request_queue in a batch, this results in improved scalability + * as the lock contention for request_queue lock is reduced. + * + * It is ok not to disable preemption when adding the request to the plug list + * or when attempting a merge, because blk_schedule_flush_list() will only flush + * the plug list when the task sleeps by itself. For details, please see + * schedule() where blk_schedule_flush_plug() is called. */ struct blk_plug { - unsigned long magic; - struct list_head list; - struct list_head cb_list; - unsigned int should_sort; - unsigned int count; + unsigned long magic; /* detect uninitialized use-cases */ + struct list_head list; /* requests */ + struct list_head cb_list; /* md requires an unplug callback */ + unsigned int should_sort; /* list to be sorted before flushing? */ + unsigned int count; /* number of queued requests */ }; #define BLK_MAX_REQUEST_COUNT 16 -- cgit v1.2.2 From 41750d31fc9599fd81763e685a6b7b42d298c4f8 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 23 Aug 2011 17:05:18 -0700 Subject: x86, x2apic: Enable the bios request for x2apic optout On the platforms which are x2apic and interrupt-remapping capable, Linux kernel is enabling x2apic even if the BIOS doesn't. This is to take advantage of the features that x2apic brings in. Some of the OEM platforms are running into issues because of this, as their bios is not x2apic aware. For example, this was resulting in interrupt migration issues on one of the platforms. Also if the BIOS SMI handling uses APIC interface to send SMI's, then the BIOS need to be aware of x2apic mode that OS has enabled. On some of these platforms, BIOS doesn't have a HW mechanism to turnoff the x2apic feature to prevent OS from enabling it. To resolve this mess, recent changes to the VT-d2 specification: http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf includes a mechanism that provides BIOS a way to request system software to opt out of enabling x2apic mode. Look at the x2apic optout flag in the DMAR tables before enabling the x2apic mode in the platform. Also print a warning that we have disabled x2apic based on the BIOS request. Kernel boot parameter "intremap=no_x2apic_optout" can be used to override the BIOS x2apic optout request. Signed-off-by: Youquan Song Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.171766616@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar --- include/linux/dmar.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 7b776d71d36d..2dc810e35dd0 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -26,8 +26,13 @@ #include #include +/* DMAR Flags */ +#define DMAR_INTR_REMAP 0x1 +#define DMAR_X2APIC_OPT_OUT 0x2 + struct intel_iommu; #if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP) +extern struct acpi_table_header *dmar_tbl; struct dmar_drhd_unit { struct list_head list; /* list of drhd units */ struct acpi_dmar_header *hdr; /* ACPI header */ @@ -110,7 +115,7 @@ struct irte { #ifdef CONFIG_INTR_REMAP extern int intr_remapping_enabled; extern int intr_remapping_supported(void); -extern int enable_intr_remapping(int); +extern int enable_intr_remapping(void); extern void disable_intr_remapping(void); extern int reenable_intr_remapping(int); @@ -177,7 +182,7 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev) #define intr_remapping_enabled (0) -static inline int enable_intr_remapping(int eim) +static inline int enable_intr_remapping(void) { return -1; } @@ -192,6 +197,11 @@ static inline int reenable_intr_remapping(int eim) } #endif +enum { + IRQ_REMAP_XAPIC_MODE, + IRQ_REMAP_X2APIC_MODE, +}; + /* Can't use the common MSI interrupt functions * since DMAR is not a pci device */ -- cgit v1.2.2 From 318fe7df9d8456f778451b01913b5d0dc0a25854 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 23 Aug 2011 17:05:20 -0700 Subject: iommu: Move IOMMU specific code to intel-iommu.c Move the IOMMU specific routines to intel-iommu.c leaving the dmar.c to the common ACPI dmar code shared between DMA-remapping and Interrupt-remapping. Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.282401285@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar --- include/linux/dma_remapping.h | 5 ++++- include/linux/dmar.h | 17 +++++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h index bbd8661b3473..aaa12cb8227a 100644 --- a/include/linux/dma_remapping.h +++ b/include/linux/dma_remapping.h @@ -25,9 +25,9 @@ struct intel_iommu; struct dmar_domain; struct root_entry; -extern void free_dmar_iommu(struct intel_iommu *iommu); #ifdef CONFIG_DMAR +extern void free_dmar_iommu(struct intel_iommu *iommu); extern int iommu_calculate_agaw(struct intel_iommu *iommu); extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); #else @@ -39,6 +39,9 @@ static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) { return 0; } +static inline void free_dmar_iommu(struct intel_iommu *iommu) +{ +} #endif extern int dmar_disabled; diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 2dc810e35dd0..a7992ec36570 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -237,9 +237,26 @@ struct dmar_atsr_unit { u8 include_all:1; /* include all ports */ }; +int dmar_parse_rmrr_atsr_dev(void); +extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header); +extern int dmar_parse_one_atsr(struct acpi_dmar_header *header); +extern int dmar_parse_dev_scope(void *start, void *end, int *cnt, + struct pci_dev ***devices, u16 segment); extern int intel_iommu_init(void); #else /* !CONFIG_DMAR: */ static inline int intel_iommu_init(void) { return -ENODEV; } +static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header) +{ + return 0; +} +static inline int dmar_parse_one_atsr(struct acpi_dmar_header *header) +{ + return 0; +} +static inline int dmar_parse_rmrr_atsr_dev(void) +{ + return 0; +} #endif /* CONFIG_DMAR */ #endif /* __DMAR_H__ */ -- cgit v1.2.2 From f5d1b97bcdd8ac195f48c645bffcb88bcea533e4 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 23 Aug 2011 17:05:22 -0700 Subject: iommu: Cleanup ifdefs in detect_intel_iommu() Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.386003047@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar --- include/linux/dma_remapping.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h index aaa12cb8227a..b98b61b3743e 100644 --- a/include/linux/dma_remapping.h +++ b/include/linux/dma_remapping.h @@ -30,6 +30,7 @@ struct root_entry; extern void free_dmar_iommu(struct intel_iommu *iommu); extern int iommu_calculate_agaw(struct intel_iommu *iommu); extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); +extern int dmar_disabled; #else static inline int iommu_calculate_agaw(struct intel_iommu *iommu) { @@ -42,8 +43,8 @@ static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu) static inline void free_dmar_iommu(struct intel_iommu *iommu) { } +#define dmar_disabled (1) #endif -extern int dmar_disabled; #endif -- cgit v1.2.2 From d3f138106b4b40640dc667f0222fd9f137387b32 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 23 Aug 2011 17:05:25 -0700 Subject: iommu: Rename the DMAR and INTR_REMAP config options Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar --- include/linux/dma_remapping.h | 2 +- include/linux/dmar.h | 12 ++++++------ include/linux/intel-iommu.h | 6 +++--- 3 files changed, 10 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h index b98b61b3743e..ef90cbd8e173 100644 --- a/include/linux/dma_remapping.h +++ b/include/linux/dma_remapping.h @@ -26,7 +26,7 @@ struct dmar_domain; struct root_entry; -#ifdef CONFIG_DMAR +#ifdef CONFIG_INTEL_IOMMU extern void free_dmar_iommu(struct intel_iommu *iommu); extern int iommu_calculate_agaw(struct intel_iommu *iommu); extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); diff --git a/include/linux/dmar.h b/include/linux/dmar.h index a7992ec36570..a8b1a847c103 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -31,7 +31,7 @@ #define DMAR_X2APIC_OPT_OUT 0x2 struct intel_iommu; -#if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP) +#ifdef CONFIG_DMAR_TABLE extern struct acpi_table_header *dmar_tbl; struct dmar_drhd_unit { struct list_head list; /* list of drhd units */ @@ -81,7 +81,7 @@ static inline int enable_drhd_fault_handling(void) { return -1; } -#endif /* !CONFIG_DMAR && !CONFIG_INTR_REMAP */ +#endif /* !CONFIG_DMAR_TABLE */ struct irte { union { @@ -112,7 +112,7 @@ struct irte { }; }; -#ifdef CONFIG_INTR_REMAP +#ifdef CONFIG_IRQ_REMAP extern int intr_remapping_enabled; extern int intr_remapping_supported(void); extern int enable_intr_remapping(void); @@ -214,7 +214,7 @@ extern int dmar_set_interrupt(struct intel_iommu *iommu); extern irqreturn_t dmar_fault(int irq, void *dev_id); extern int arch_setup_dmar_msi(unsigned int irq); -#ifdef CONFIG_DMAR +#ifdef CONFIG_INTEL_IOMMU extern int iommu_detected, no_iommu; extern struct list_head dmar_rmrr_units; struct dmar_rmrr_unit { @@ -243,7 +243,7 @@ extern int dmar_parse_one_atsr(struct acpi_dmar_header *header); extern int dmar_parse_dev_scope(void *start, void *end, int *cnt, struct pci_dev ***devices, u16 segment); extern int intel_iommu_init(void); -#else /* !CONFIG_DMAR: */ +#else /* !CONFIG_INTEL_IOMMU: */ static inline int intel_iommu_init(void) { return -ENODEV; } static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header) { @@ -257,6 +257,6 @@ static inline int dmar_parse_rmrr_atsr_dev(void) { return 0; } -#endif /* CONFIG_DMAR */ +#endif /* CONFIG_INTEL_IOMMU */ #endif /* __DMAR_H__ */ diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 9310c699a37d..235b8879af45 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -279,7 +279,7 @@ struct q_inval { int free_cnt; }; -#ifdef CONFIG_INTR_REMAP +#ifdef CONFIG_IRQ_REMAP /* 1MB - maximum possible interrupt remapping table size */ #define INTR_REMAP_PAGE_ORDER 8 #define INTR_REMAP_TABLE_REG_SIZE 0xf @@ -318,7 +318,7 @@ struct intel_iommu { unsigned int irq; unsigned char name[13]; /* Device Name */ -#ifdef CONFIG_DMAR +#ifdef CONFIG_INTEL_IOMMU unsigned long *domain_ids; /* bitmap of domains */ struct dmar_domain **domains; /* ptr to domains */ spinlock_t lock; /* protect context, domain ids */ @@ -329,7 +329,7 @@ struct intel_iommu { struct q_inval *qi; /* Queued invalidation info */ u32 *iommu_state; /* Store iommu states between suspend and resume.*/ -#ifdef CONFIG_INTR_REMAP +#ifdef CONFIG_IRQ_REMAP struct ir_table *ir_table; /* Interrupt remapping info */ #endif int node; -- cgit v1.2.2 From cbbc719fccdb8cbd87350a05c0d33167c9b79365 Mon Sep 17 00:00:00 2001 From: hank Date: Tue, 20 Sep 2011 13:53:39 -0700 Subject: time: Change jiffies_to_clock_t() argument type to unsigned long The parameter's origin type is long. On an i386 architecture, it can easily be larger than 0x80000000, causing this function to convert it to a sign-extended u64 type. Change the type to unsigned long so we get the correct result. Signed-off-by: hank Cc: John Stultz Cc: [ build fix ] Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/jiffies.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index f97672a36fa8..265e2c3cbd1c 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -303,7 +303,7 @@ extern void jiffies_to_timespec(const unsigned long jiffies, extern unsigned long timeval_to_jiffies(const struct timeval *value); extern void jiffies_to_timeval(const unsigned long jiffies, struct timeval *value); -extern clock_t jiffies_to_clock_t(long x); +extern clock_t jiffies_to_clock_t(unsigned long x); extern unsigned long clock_t_to_jiffies(unsigned long x); extern u64 jiffies_64_to_clock_t(u64 x); extern u64 nsec_to_clock_t(u64 x); -- cgit v1.2.2 From 74a45790861f659058e8f8b565d98e5a1fdd8440 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Aug 2011 07:31:13 -0300 Subject: [media] videodev2.h: add V4L2_CTRL_FLAG_VOLATILE Add a new VOLATILE control flag that is set for volatile controls. That way applications know whether the value of the control is volatile (i.e. can change continuously) or not. Until now this was an internal property, but it is useful to know in userspace as well. A typical use case is the gain value when autogain is on. In that case the hardware will continuously adjust the gain based various environmental factors. This patch just adds and documents the flag, it's not yet used. Signed-off-by: Hans Verkuil Acked-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a5359c6e7577..9d14523487d1 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -1082,6 +1082,7 @@ struct v4l2_querymenu { #define V4L2_CTRL_FLAG_INACTIVE 0x0010 #define V4L2_CTRL_FLAG_SLIDER 0x0020 #define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040 +#define V4L2_CTRL_FLAG_VOLATILE 0x0080 /* Query flag, to be ORed with the control ID */ #define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000 -- cgit v1.2.2 From c3c1250e93a7ab1327a9fc49d2a22405672f4204 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Mon, 5 Sep 2011 23:15:06 +0300 Subject: hwspinlock/core/omap: fix id issues on multiple hwspinlock devices hwspinlock devices provide system-wide hardware locks that are used by remote processors that have no other way to achieve synchronization. To achieve that, each physical lock must have a system-wide id number that is agreed upon, otherwise remote processors can't possibly assume they're using the same hardware lock. Usually boards have a single hwspinlock device, which provides several hwspinlocks, and in this case, they can be trivially numbered 0 to (num-of-locks - 1). In case boards have several hwspinlocks devices, a different base id should be used for each hwspinlock device (they can't all use 0 as a starting id!). While this is certainly not common, it's just plain wrong to just silently use 0 as a base id whenever the hwspinlock driver is probed. This patch provides a hwspinlock_pdata structure, that boards can use to set a different base id for each of the hwspinlock devices they may have, and demonstrates how to use it with the omap hwspinlock driver. While we're at it, make sure the hwspinlock core prints an explicit error message in case an hwspinlock is registered with an id number that already exists; this will help users catch such base id issues. Reported-by: Arnd Bergmann Signed-off-by: Ohad Ben-Cohen Acked-by: Tony Lindgren --- include/linux/hwspinlock.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h index 8390efc457eb..f85cef5452f2 100644 --- a/include/linux/hwspinlock.h +++ b/include/linux/hwspinlock.h @@ -27,6 +27,34 @@ struct hwspinlock; +/** + * struct hwspinlock_pdata - platform data for hwspinlock drivers + * @base_id: base id for this hwspinlock device + * + * hwspinlock devices provide system-wide hardware locks that are used + * by remote processors that have no other way to achieve synchronization. + * + * To achieve that, each physical lock must have a system-wide id number + * that is agreed upon, otherwise remote processors can't possibly assume + * they're using the same hardware lock. + * + * Usually boards have a single hwspinlock device, which provides several + * hwspinlocks, and in this case, they can be trivially numbered 0 to + * (num-of-locks - 1). + * + * In case boards have several hwspinlocks devices, a different base id + * should be used for each hwspinlock device (they can't all use 0 as + * a starting id!). + * + * This platform data structure should be used to provide the base id + * for each device (which is trivially 0 when only a single hwspinlock + * device exists). It can be shared between different platforms, hence + * its location. + */ +struct hwspinlock_pdata { + int base_id; +}; + #if defined(CONFIG_HWSPINLOCK) || defined(CONFIG_HWSPINLOCK_MODULE) int hwspin_lock_register(struct hwspinlock *lock); -- cgit v1.2.2 From c536abfdf5227987b8a72ff955b64e62fd58fe91 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Thu, 8 Sep 2011 21:16:17 +0300 Subject: hwspinlock/core: remove stubs for register/unregister hwspinlock drivers must anyway select CONFIG_HWSPINLOCK, so there's no point in having register/unregister stubs. Removing those stubs will only make it easier for developers to catch CONFIG_HWSPINLOCK mis-.config-urations. Signed-off-by: Ohad Ben-Cohen --- include/linux/hwspinlock.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h index f85cef5452f2..c246522a9551 100644 --- a/include/linux/hwspinlock.h +++ b/include/linux/hwspinlock.h @@ -122,16 +122,6 @@ static inline int hwspin_lock_get_id(struct hwspinlock *hwlock) return 0; } -static inline int hwspin_lock_register(struct hwspinlock *hwlock) -{ - return -ENODEV; -} - -static inline struct hwspinlock *hwspin_lock_unregister(unsigned int id) -{ - return NULL; -} - #endif /* !CONFIG_HWSPINLOCK */ /** -- cgit v1.2.2 From 300bab9770e2bd10262bcc78e7249fdce2c74b38 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Tue, 6 Sep 2011 15:39:21 +0300 Subject: hwspinlock/core: register a bank of hwspinlocks in a single API call Hardware Spinlock devices usually contain numerous locks (known devices today support between 32 to 256 locks). Originally hwspinlock core required drivers to register (and later, when needed, unregister) each lock separately. That worked, but required hwspinlocks drivers to do a bit extra work when they were probed/removed. This patch changes hwspin_lock_{un}register() to allow a bank of hwspinlocks to be {un}registered in a single invocation. A new 'struct hwspinlock_device', which contains an array of 'struct hwspinlock's is now being passed to the core upon registration (so instead of wrapping each struct hwspinlock, a priv member has been added to allow drivers to piggyback their private data with each hwspinlock). While at it, several per-lock members were moved to be per-device: 1. struct device *dev 2. struct hwspinlock_ops *ops In addition, now that the array of locks is handled by the core, there's no reason to maintain a per-lock 'int id' member: the id of the lock anyway equals to its index in the bank's array plus the bank's base_id. Remove this per-lock id member too, and instead use a simple pointers arithmetic to derive it. As a result of this change, hwspinlocks drivers are now simpler and smaller (about %20 code reduction) and the memory footprint of the hwspinlock framework is reduced. Signed-off-by: Ohad Ben-Cohen --- include/linux/hwspinlock.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h index c246522a9551..08a2fee40659 100644 --- a/include/linux/hwspinlock.h +++ b/include/linux/hwspinlock.h @@ -20,12 +20,15 @@ #include #include +#include /* hwspinlock mode argument */ #define HWLOCK_IRQSTATE 0x01 /* Disable interrupts, save state */ #define HWLOCK_IRQ 0x02 /* Disable interrupts, don't save state */ struct hwspinlock; +struct hwspinlock_device; +struct hwspinlock_ops; /** * struct hwspinlock_pdata - platform data for hwspinlock drivers @@ -57,8 +60,9 @@ struct hwspinlock_pdata { #if defined(CONFIG_HWSPINLOCK) || defined(CONFIG_HWSPINLOCK_MODULE) -int hwspin_lock_register(struct hwspinlock *lock); -struct hwspinlock *hwspin_lock_unregister(unsigned int id); +int hwspin_lock_register(struct hwspinlock_device *bank, struct device *dev, + const struct hwspinlock_ops *ops, int base_id, int num_locks); +int hwspin_lock_unregister(struct hwspinlock_device *bank); struct hwspinlock *hwspin_lock_request(void); struct hwspinlock *hwspin_lock_request_specific(unsigned int id); int hwspin_lock_free(struct hwspinlock *hwlock); -- cgit v1.2.2 From 489bccea6334514a8e13436f10d0a274777bf17a Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Fri, 27 May 2011 10:30:12 +0200 Subject: clocksource: add DBX500 PRCMU Timer support This patch adds the DBX500 PRCMU Timer driver as a clocksource and as sched_clock. Cc: Thomas Gleixner Signed-off-by: Mattias Wallin Signed-off-by: Jonas Aaberg Signed-off-by: Linus Walleij --- include/linux/clksrc-dbx500-prcmu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/clksrc-dbx500-prcmu.h (limited to 'include/linux') diff --git a/include/linux/clksrc-dbx500-prcmu.h b/include/linux/clksrc-dbx500-prcmu.h new file mode 100644 index 000000000000..d1e95042408b --- /dev/null +++ b/include/linux/clksrc-dbx500-prcmu.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * License Terms: GNU General Public License v2 + * Author: Mattias Wallin + * + */ +#ifndef __CLKSRC_DBX500_PRCMU_H +#define __CLKSRC_DBX500_PRCMU_H + +#include +#include + +extern void __iomem *clksrc_dbx500_timer_base; + +#ifdef CONFIG_CLKSRC_DBX500_PRCMU +void __init clksrc_dbx500_prcmu_init(void); +#else +void __init clksrc_dbx500_prcmu_init(void) {} +#endif + +#endif -- cgit v1.2.2 From d17bf31832d30b91225a84b53fae380dbdd07d3d Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 22 Sep 2011 11:05:48 +0300 Subject: ASoC: twl6040: Introduce SW only shadow register Software only shadow register to be used by the driver. For example Earpiece path will need this shadow register. Signed-off-by: Peter Ujfalusi Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index ec1ec794fa23..47470cadf969 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -68,8 +68,6 @@ #define TWL6040_REG_ACCCTL 0x2D #define TWL6040_REG_STATUS 0x2E -#define TWL6040_CACHEREGNUM (TWL6040_REG_STATUS + 1) - /* INTID (0x03) fields */ #define TWL6040_THINT 0x01 -- cgit v1.2.2 From ab6cf13943303f865320407b17b0f86095d23ce3 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 22 Sep 2011 11:05:54 +0300 Subject: ASoC/MFD: twl6040: Combine bit definitions for Headset control registers Use one set of defines for the HS bits, since they are identical in both control register. Signed-off-by: Peter Ujfalusi Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 47470cadf969..d9e05eabef33 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -120,15 +120,10 @@ #define TWL6040_LPLLFIN 0x08 #define TWL6040_HPLLSEL 0x10 -/* HSLCTL (0x10) fields */ +/* HSLCTL/R (0x10/0x11) fields */ -#define TWL6040_HSDACMODEL 0x02 -#define TWL6040_HSDRVMODEL 0x08 - -/* HSRCTL (0x11) fields */ - -#define TWL6040_HSDACMODER 0x02 -#define TWL6040_HSDRVMODER 0x08 +#define TWL6040_HSDACMODE (1 << 1) +#define TWL6040_HSDRVMODE (1 << 3) /* VIBCTLL (0x18) fields */ -- cgit v1.2.2 From 611cad720148c899db5a383c1c676fd820df7023 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 15 Aug 2011 15:28:14 +0800 Subject: dt: add of_alias_scan and of_alias_get_id The patch adds function of_alias_scan to populate a global lookup table with the properties of 'aliases' node and function of_alias_get_id for drivers to find alias id from the lookup table. v3: Split out automatic addition of aliases on id lookup so that it can be debated separately from the core functionality. v2: - Add of_chosen/of_aliases populating and of_alias_scan() invocation for OF_PROMTREE. - Add locking - rework parse loop Signed-off-by: Shawn Guo Acked-by: David S. Miller Signed-off-by: Grant Likely --- include/linux/of.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 9180dc5cb00b..8b6383d876ca 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -68,6 +68,7 @@ struct device_node { /* Pointer for first entry in chain of all nodes. */ extern struct device_node *allnodes; extern struct device_node *of_chosen; +extern struct device_node *of_aliases; extern rwlock_t devtree_lock; static inline bool of_have_populated_dt(void) @@ -209,6 +210,9 @@ extern int of_device_is_available(const struct device_node *device); extern const void *of_get_property(const struct device_node *node, const char *name, int *lenp); +#define for_each_property(pp, properties) \ + for (pp = properties; pp != NULL; pp = pp->next) + extern int of_n_addr_cells(struct device_node *np); extern int of_n_size_cells(struct device_node *np); extern const struct of_device_id *of_match_node( @@ -221,6 +225,9 @@ extern int of_parse_phandles_with_args(struct device_node *np, const char *list_name, const char *cells_name, int index, struct device_node **out_node, const void **out_args); +extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); +extern int of_alias_get_id(struct device_node *np, const char *stem); + extern int of_machine_is_compatible(const char *compat); extern int prom_add_property(struct device_node* np, struct property* prop); -- cgit v1.2.2 From aba3dfff9a75eb272c4f47994f16eb5d548a5af1 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 21 Sep 2011 13:23:10 -0600 Subject: dt: add empty for_each_child_of_node, of_find_property The patch adds a couple empty functions for non-dt build, so that drivers migrating to dt can save some '#ifdef CONFIG_OF'. Signed-off-by: Stephen Warren Signed-off-by: Grant Likely --- include/linux/of.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 8b6383d876ca..83a61f3b443c 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -249,6 +249,16 @@ static inline bool of_have_populated_dt(void) return false; } +#define for_each_child_of_node(parent, child) \ + while (0) + +static inline struct property *of_find_property(const struct device_node *np, + const char *name, + int *lenp) +{ + return NULL; +} + static inline int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, size_t sz) -- cgit v1.2.2 From 06315348b16178e4c006e7892ef8e5e65f49c66a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?S=C3=B8ren=20Holm?= Date: Fri, 2 Sep 2011 22:55:37 +0200 Subject: serial: Support the EFR-register of XR1715x uarts. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The EFR (Enhenced-Features-Register) is located at a different offset than the other devices supporting UART_CAP_EFR. This change add a special setup quick to set UPF_EXAR_EFR on the port. UPF_EXAR_EFR is then used to the port type to PORT_XR17D15X since it is for sure a XR17D15X uart. Signed-off-by: Søren Holm Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 4 +++- include/linux/serial_reg.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 493773e3b46d..eadf33d0abba 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -46,7 +46,8 @@ #define PORT_AR7 18 /* Texas Instruments AR7 internal UART */ #define PORT_U6_16550A 19 /* ST-Ericsson U6xxx internal UART */ #define PORT_TEGRA 20 /* NVIDIA Tegra internal UART */ -#define PORT_MAX_8250 20 /* max port ID */ +#define PORT_XR17D15X 21 /* Exar XR17D15x UART */ +#define PORT_MAX_8250 21 /* max port ID */ /* * ARM specific type numbers. These are not currently guaranteed @@ -349,6 +350,7 @@ struct uart_port { #define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16)) #define UPF_CONS_FLOW ((__force upf_t) (1 << 23)) #define UPF_SHARE_IRQ ((__force upf_t) (1 << 24)) +#define UPF_EXAR_EFR ((__force upf_t) (1 << 25)) /* The exact UART type is known and should not be probed. */ #define UPF_FIXED_TYPE ((__force upf_t) (1 << 27)) #define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28)) diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h index c75bda37c18e..8ce70d76f836 100644 --- a/include/linux/serial_reg.h +++ b/include/linux/serial_reg.h @@ -152,6 +152,7 @@ * LCR=0xBF (or DLAB=1 for 16C660) */ #define UART_EFR 2 /* I/O: Extended Features Register */ +#define UART_XR_EFR 9 /* I/O: Extended Features Register (XR17D15x) */ #define UART_EFR_CTS 0x80 /* CTS flow control */ #define UART_EFR_RTS 0x40 /* RTS flow control */ #define UART_EFR_SCD 0x20 /* Special character detect */ -- cgit v1.2.2 From ab10023e0088d5075354afc7cb9e72304757dddd Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Thu, 10 Feb 2011 02:04:45 -0800 Subject: cpu_pm: Add cpu power management notifiers During some CPU power modes entered during idle, hotplug and suspend, peripherals located in the CPU power domain, such as the GIC, localtimers, and VFP, may be powered down. Add a notifier chain that allows drivers for those peripherals to be notified before and after they may be reset. Notified drivers can include VFP co-processor, interrupt controller and it's PM extensions, local CPU timers context save/restore which shouldn't be interrupted. Hence CPU PM event APIs must be called with interrupts disabled. Signed-off-by: Colin Cross Signed-off-by: Santosh Shilimkar Reviewed-by: Kevin Hilman Tested-and-Acked-by: Shawn Guo Tested-by: Kevin Hilman Tested-by: Vishwanath BS --- include/linux/cpu_pm.h | 109 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 include/linux/cpu_pm.h (limited to 'include/linux') diff --git a/include/linux/cpu_pm.h b/include/linux/cpu_pm.h new file mode 100644 index 000000000000..455b233dd3b1 --- /dev/null +++ b/include/linux/cpu_pm.h @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2011 Google, Inc. + * + * Author: + * Colin Cross + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_CPU_PM_H +#define _LINUX_CPU_PM_H + +#include +#include + +/* + * When a CPU goes to a low power state that turns off power to the CPU's + * power domain, the contents of some blocks (floating point coprocessors, + * interrupt controllers, caches, timers) in the same power domain can + * be lost. The cpm_pm notifiers provide a method for platform idle, suspend, + * and hotplug implementations to notify the drivers for these blocks that + * they may be reset. + * + * All cpu_pm notifications must be called with interrupts disabled. + * + * The notifications are split into two classes: CPU notifications and CPU + * cluster notifications. + * + * CPU notifications apply to a single CPU and must be called on the affected + * CPU. They are used to save per-cpu context for affected blocks. + * + * CPU cluster notifications apply to all CPUs in a single power domain. They + * are used to save any global context for affected blocks, and must be called + * after all the CPUs in the power domain have been notified of the low power + * state. + */ + +/* + * Event codes passed as unsigned long val to notifier calls + */ +enum cpu_pm_event { + /* A single cpu is entering a low power state */ + CPU_PM_ENTER, + + /* A single cpu failed to enter a low power state */ + CPU_PM_ENTER_FAILED, + + /* A single cpu is exiting a low power state */ + CPU_PM_EXIT, + + /* A cpu power domain is entering a low power state */ + CPU_CLUSTER_PM_ENTER, + + /* A cpu power domain failed to enter a low power state */ + CPU_CLUSTER_PM_ENTER_FAILED, + + /* A cpu power domain is exiting a low power state */ + CPU_CLUSTER_PM_EXIT, +}; + +#ifdef CONFIG_CPU_PM +int cpu_pm_register_notifier(struct notifier_block *nb); +int cpu_pm_unregister_notifier(struct notifier_block *nb); +int cpu_pm_enter(void); +int cpu_pm_exit(void); +int cpu_cluster_pm_enter(void); +int cpu_cluster_pm_exit(void); + +#else + +static inline int cpu_pm_register_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int cpu_pm_unregister_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int cpu_pm_enter(void) +{ + return 0; +} + +static inline int cpu_pm_exit(void) +{ + return 0; +} + +static inline int cpu_cluster_pm_enter(void) +{ + return 0; +} + +static inline int cpu_cluster_pm_exit(void) +{ + return 0; +} +#endif +#endif -- cgit v1.2.2 From 6777829cfe1c4ed78319ad40aaee60254222da76 Mon Sep 17 00:00:00 2001 From: Greg Rose Date: Fri, 22 Jul 2011 05:46:07 +0000 Subject: pci: Add flag indicating device has been assigned by KVM Device drivers that create and destroy SR-IOV virtual functions via calls to pci_enable_sriov() and pci_disable_sriov can cause catastrophic failures if they attempt to destroy VFs while they are assigned to guest virtual machines. By adding a flag for use by the KVM module to indicate that a device is assigned a device driver can check that flag and avoid destroying VFs while they are assigned and avoid system failures. CC: Ian Campbell CC: Konrad Wilk Signed-off-by: Greg Rose Acked-by: Jesse Barnes Signed-off-by: Jeff Kirsher --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index f27893b3b724..d8c8573ecc21 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -174,6 +174,8 @@ enum pci_dev_flags { PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, /* Device configuration is irrevocably lost if disabled into D3 */ PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, + /* Provide indication device is assigned by a Virtual Machine Manager */ + PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, }; enum pci_irq_reroute_variant { -- cgit v1.2.2 From 1cd7acc4ef5459dd92d0d04430d353de0a54b393 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 28 Jan 2011 06:23:57 -0300 Subject: USB: export video.h to the includes available for userspace The uvcvideo extension unit API requires constants defined in the video.h header. Add it to the list of includes exported to userspace. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/usb/Kbuild | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/Kbuild b/include/linux/usb/Kbuild index ed91fb62674b..b607f3532e88 100644 --- a/include/linux/usb/Kbuild +++ b/include/linux/usb/Kbuild @@ -7,3 +7,4 @@ header-y += gadgetfs.h header-y += midi.h header-y += g_printer.h header-y += tmc.h +header-y += video.h -- cgit v1.2.2 From 8c3ba334f8588e1d5099f8602cf01897720e0eca Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 18 Jul 2011 17:17:15 +0300 Subject: KVM: x86: Raise the hard VCPU count limit The patch raises the hard limit of VCPU count to 254. This will allow developers to easily work on scalability and will allow users to test high VCPU setups easily without patching the kernel. To prevent possible issues with current setups, KVM_CAP_NR_VCPUS now returns the recommended VCPU limit (which is still 64) - this should be a safe value for everybody, while a new KVM_CAP_MAX_VCPUS returns the hard limit which is now 254. Cc: Avi Kivity Cc: Ingo Molnar Cc: Marcelo Tosatti Cc: Pekka Enberg Suggested-by: Pekka Enberg Signed-off-by: Sasha Levin Signed-off-by: Marcelo Tosatti --- include/linux/kvm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index aace6b8691a2..206979877888 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -463,7 +463,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_VAPIC 6 #define KVM_CAP_EXT_CPUID 7 #define KVM_CAP_CLOCKSOURCE 8 -#define KVM_CAP_NR_VCPUS 9 /* returns max vcpus per vm */ +#define KVM_CAP_NR_VCPUS 9 /* returns recommended max vcpus per vm */ #define KVM_CAP_NR_MEMSLOTS 10 /* returns max memory slots per vm */ #define KVM_CAP_PIT 11 #define KVM_CAP_NOP_IO_DELAY 12 @@ -553,6 +553,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_SPAPR_TCE 63 #define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_RMA 65 +#define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */ #define KVM_CAP_S390_GMAP 71 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.2 From 2b3c246a682c50f5415c71fc5387a114a6f0d643 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 20 Jul 2011 20:59:00 +0300 Subject: KVM: Make coalesced mmio use a device per zone This patch changes coalesced mmio to create one mmio device per zone instead of handling all zones in one device. Doing so enables us to take advantage of existing locking and prevents a race condition between coalesced mmio registration/unregistration and lookups. Suggested-by: Avi Kivity Signed-off-by: Sasha Levin Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index eabb21a30c34..ff4d4062af9d 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -63,7 +63,7 @@ extern struct kmem_cache *kvm_vcpu_cache; */ struct kvm_io_bus { int dev_count; -#define NR_IOBUS_DEVS 200 +#define NR_IOBUS_DEVS 300 struct kvm_io_device *devs[NR_IOBUS_DEVS]; }; @@ -256,8 +256,9 @@ struct kvm { struct kvm_arch arch; atomic_t users_count; #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET - struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; + spinlock_t ring_lock; + struct list_head coalesced_zones; #endif struct mutex irq_lock; -- cgit v1.2.2 From 743eeb0b01d2fbf4154bf87bff1ebb6fb18aeb7a Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 27 Jul 2011 16:00:48 +0300 Subject: KVM: Intelligent device lookup on I/O bus Currently the method of dealing with an IO operation on a bus (PIO/MMIO) is to call the read or write callback for each device registered on the bus until we find a device which handles it. Since the number of devices on a bus can be significant due to ioeventfds and coalesced MMIO zones, this leads to a lot of overhead on each IO operation. Instead of registering devices, we now register ranges which points to a device. Lookup is done using an efficient bsearch instead of a linear search. Performance test was conducted by comparing exit count per second with 200 ioeventfds created on one byte and the guest is trying to access a different byte continuously (triggering usermode exits). Before the patch the guest has achieved 259k exits per second, after the patch the guest does 274k exits per second. Cc: Avi Kivity Cc: Marcelo Tosatti Signed-off-by: Sasha Levin Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index ff4d4062af9d..d0e42f30edf6 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -55,16 +55,16 @@ struct kvm; struct kvm_vcpu; extern struct kmem_cache *kvm_vcpu_cache; -/* - * It would be nice to use something smarter than a linear search, TBD... - * Thankfully we dont expect many devices to register (famous last words :), - * so until then it will suffice. At least its abstracted so we can change - * in one place. - */ +struct kvm_io_range { + gpa_t addr; + int len; + struct kvm_io_device *dev; +}; + struct kvm_io_bus { int dev_count; #define NR_IOBUS_DEVS 300 - struct kvm_io_device *devs[NR_IOBUS_DEVS]; + struct kvm_io_range range[NR_IOBUS_DEVS]; }; enum kvm_bus { @@ -77,8 +77,8 @@ int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, const void *val); int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, void *val); -int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, - struct kvm_io_device *dev); +int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, + int len, struct kvm_io_device *dev); int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, struct kvm_io_device *dev); -- cgit v1.2.2 From a15bd354f083f20f257db450488db52ac27df439 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 8 Aug 2011 17:17:09 +0200 Subject: KVM: PPC: Add support for explicit HIOR setting Until now, we always set HIOR based on the PVR, but this is just wrong. Instead, we should be setting HIOR explicitly, so user space can decide what the initial HIOR value is - just like on real hardware. We keep the old PVR based way around for backwards compatibility, but once user space uses the SREGS based method, we drop the PVR logic. Signed-off-by: Alexander Graf --- include/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 206979877888..490b041aba45 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -554,6 +554,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_RMA 65 #define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */ +#define KVM_CAP_PPC_HIOR 67 #define KVM_CAP_S390_GMAP 71 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.2 From 930b412a005bde2ea3f05911eaaeeb10f11d79ab Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 8 Aug 2011 17:29:42 +0200 Subject: KVM: PPC: Enable the PAPR CAP for Book3S Now that Book3S PV mode can also run PAPR guests, we can add a PAPR cap and enable it for all Book3S targets. Enabling that CAP switches KVM into PAPR mode. Signed-off-by: Alexander Graf --- include/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 490b041aba45..68840544006d 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -555,6 +555,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_PPC_RMA 65 #define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */ #define KVM_CAP_PPC_HIOR 67 +#define KVM_CAP_PPC_PAPR 68 #define KVM_CAP_S390_GMAP 71 #ifdef KVM_CAP_IRQ_ROUTING -- cgit v1.2.2 From bd80158aff71a80292f96d9baea1a65bc0ce87b3 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Mon, 12 Sep 2011 11:26:22 +0200 Subject: KVM: Clean up and extend rate-limited output The use of printk_ratelimit is discouraged, replace it with pr*_ratelimited or __ratelimit. While at it, convert remaining guest-triggerable printks to rate-limited variants. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index d0e42f30edf6..2a414f66af28 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -282,11 +283,8 @@ struct kvm { /* The guest did something we don't support. */ #define pr_unimpl(vcpu, fmt, ...) \ - do { \ - if (printk_ratelimit()) \ - printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ - current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ - } while (0) + pr_err_ratelimited("kvm: %i: cpu%i " fmt, \ + current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__) #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) -- cgit v1.2.2 From 7460fb4a340033107530df19e7e125bd0969bfb2 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 20 Sep 2011 13:43:14 +0300 Subject: KVM: Fix simultaneous NMIs If simultaneous NMIs happen, we're supposed to queue the second and next (collapsing them), but currently we sometimes collapse the second into the first. Fix by using a counter for pending NMIs instead of a bool; since the counter limit depends on whether the processor is currently in an NMI handler, which can only be checked in vcpu context (via the NMI mask), we add a new KVM_REQ_NMI to request recalculation of the counter. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2a414f66af28..d52623199978 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -49,6 +49,7 @@ #define KVM_REQ_EVENT 11 #define KVM_REQ_APF_HALT 12 #define KVM_REQ_STEAL_UPDATE 13 +#define KVM_REQ_NMI 14 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 -- cgit v1.2.2 From b77c3920e90e96103e4f41442999402925fe5f73 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 21 Sep 2011 16:56:54 +0200 Subject: HID: add autodetection of multitouch devices As mentioned by http://www.microsoft.com/whdc/device/input/DigitizerDrvs_touch.mspx multitouch devices are those that have the input report HID_CONTACTID. This patch detects this and unloads the generic-usb driver. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- include/linux/hid.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 9cf8e7ae7450..6fb743d72bfe 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -312,6 +312,7 @@ struct hid_item { #define HID_QUIRK_BADPAD 0x00000020 #define HID_QUIRK_MULTI_INPUT 0x00000040 #define HID_QUIRK_HIDINPUT_FORCE 0x00000080 +#define HID_QUIRK_MULTITOUCH 0x00000100 #define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000 #define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000 #define HID_QUIRK_NO_INIT_REPORTS 0x20000000 -- cgit v1.2.2 From cd0ea672f58d5cfdea271c45cec0c897f2b792aa Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 26 Sep 2011 20:22:02 +0200 Subject: PM / Domains: Split device PM domain data into base and need_restore The struct pm_domain_data data type is defined in such a way that adding new fields specific to the generic PM domains code will require include/linux/pm.h to be modified. As a result, data types used only by the generic PM domains code will be defined in two headers, although they all should be defined in pm_domain.h and pm.h will need to include more headers, which won't be very nice. For this reason change the definition of struct pm_subsys_data so that its domain_data member is a pointer, which will allow struct pm_domain_data to be subclassed by various PM domains implementations. Remove the need_restore member from struct pm_domain_data and make the generic PM domains code subclass it by adding the need_restore member to the new data type. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 3 +-- include/linux/pm_domain.h | 10 ++++++++++ 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index ed10f24d5259..f25682477f08 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -424,7 +424,6 @@ struct wakeup_source; struct pm_domain_data { struct list_head list_node; struct device *dev; - bool need_restore; }; struct pm_subsys_data { @@ -434,7 +433,7 @@ struct pm_subsys_data { struct list_head clock_list; #endif #ifdef CONFIG_PM_GENERIC_DOMAINS - struct pm_domain_data domain_data; + struct pm_domain_data *domain_data; #endif }; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 2538d906bcd1..65633e5a2bc0 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -62,6 +62,16 @@ struct gpd_link { struct list_head slave_node; }; +struct generic_pm_domain_data { + struct pm_domain_data base; + bool need_restore; +}; + +static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd) +{ + return container_of(pdd, struct generic_pm_domain_data, base); +} + #ifdef CONFIG_PM_GENERIC_DOMAINS extern int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev); -- cgit v1.2.2 From 3ce23fa9780b70525932c5e4b5ac401c67390fae Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 20 Sep 2011 01:43:15 +0000 Subject: net: introduce ptp one step time stamp mode for sync packets The IEEE 1588 standard (PTP) has a provision for a "one step" mode, where time stamps on outgoing event packets are inserted into the packet by the hardware on the fly. This patch adds a new flag for the SIOCSHWTSTAMP ioctl that lets user space programs request this mode. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- include/linux/net_tstamp.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h index a3b8546354ac..3df0984cd0d5 100644 --- a/include/linux/net_tstamp.h +++ b/include/linux/net_tstamp.h @@ -60,6 +60,15 @@ enum { * before sending the packet. */ HWTSTAMP_TX_ON, + + /* + * Enables time stamping for outgoing packets just as + * HWTSTAMP_TX_ON does, but also enables time stamp insertion + * directly into Sync packets. In this case, transmitted Sync + * packets will not received a time stamp via the socket error + * queue. + */ + HWTSTAMP_TX_ONESTEP_SYNC, }; /* possible values for hwtstamp_config->rx_filter */ -- cgit v1.2.2 From 3148bf041d169a083aa31bd69bedd5bfb7ffe215 Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Fri, 23 Sep 2011 14:19:47 -0700 Subject: usbcore: get BOS descriptor set This commit gets BOS(Binary Device Object Store) descriptor set for Super Speed devices and High Speed devices which support BOS descriptor. BOS descriptor is used to report additional USB device-level capabilities that are not reported via the Device descriptor. By getting BOS descriptor set, driver can check device's device-level capability such as LPM capability. Signed-off-by: Andiry Xu Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index c19f9100c307..90ab9dc1f080 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -292,6 +292,16 @@ struct usb_host_config { int extralen; }; +/* USB2.0 and USB3.0 device BOS descriptor set */ +struct usb_host_bos { + struct usb_bos_descriptor *desc; + + /* wireless cap descriptor is handled by wusb */ + struct usb_ext_cap_descriptor *ext_cap; + struct usb_ss_cap_descriptor *ss_cap; + struct usb_ss_container_id_descriptor *ss_id; +}; + int __usb_get_extra_descriptor(char *buffer, unsigned size, unsigned char type, void **ptr); #define usb_get_extra_descriptor(ifpoint, type, ptr) \ @@ -381,6 +391,7 @@ struct usb_tt; * @ep0: endpoint 0 data (default control pipe) * @dev: generic device interface * @descriptor: USB device descriptor + * @bos: USB device BOS descriptor set * @config: all of the device's configs * @actconfig: the active configuration * @ep_in: array of IN endpoints @@ -442,6 +453,7 @@ struct usb_device { struct device dev; struct usb_device_descriptor descriptor; + struct usb_host_bos *bos; struct usb_host_config *config; struct usb_host_config *actconfig; -- cgit v1.2.2 From 1ff4df56846d10379939166713bb2908e6a5ee0e Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Fri, 23 Sep 2011 14:19:48 -0700 Subject: usbcore: check device's LPM capability Check device's LPM capability by examining the bmAttibutes field of the USB2.0 Extension Descriptor. Signed-off-by: Andiry Xu Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 90ab9dc1f080..1d00d9bc5d65 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -410,6 +410,7 @@ struct usb_tt; * FIXME -- complete doc * @authenticated: Crypto authentication passed * @wusb: device is Wireless USB + * @lpm_capable: device supports LPM * @string_langid: language ID for strings * @product: iProduct string, if present (static) * @manufacturer: iManufacturer string, if present (static) @@ -472,6 +473,7 @@ struct usb_device { unsigned authorized:1; unsigned authenticated:1; unsigned wusb:1; + unsigned lpm_capable:1; int string_langid; /* static strings from the device */ -- cgit v1.2.2 From 65580b4321eb36f16ae8b5987bfa1bb948fc5112 Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Fri, 23 Sep 2011 14:19:52 -0700 Subject: xHCI: set USB2 hardware LPM If the device pass the USB2 software LPM and the host supports hardware LPM, enable hardware LPM for the device to let the host decide when to put the link into lower power state. If hardware LPM is enabled for a port and driver wants to put it into suspend, it must first disable hardware LPM, resume the port into U0, and then suspend the port. Signed-off-by: Andiry Xu Signed-off-by: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 4 ++++ include/linux/usb/hcd.h | 1 + 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 1d00d9bc5d65..6f49a1b39fa6 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -411,6 +411,8 @@ struct usb_tt; * @authenticated: Crypto authentication passed * @wusb: device is Wireless USB * @lpm_capable: device supports LPM + * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM + * @usb2_hw_lpm_enabled: USB2 hardware LPM enabled * @string_langid: language ID for strings * @product: iProduct string, if present (static) * @manufacturer: iManufacturer string, if present (static) @@ -474,6 +476,8 @@ struct usb_device { unsigned authenticated:1; unsigned wusb:1; unsigned lpm_capable:1; + unsigned usb2_hw_lpm_capable:1; + unsigned usb2_hw_lpm_enabled:1; int string_langid; /* static strings from the device */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 0097136ba45d..a4cd6c58870a 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -343,6 +343,7 @@ struct hc_driver { * address is set */ int (*update_device)(struct usb_hcd *, struct usb_device *); + int (*set_usb2_hw_lpm)(struct usb_hcd *, struct usb_device *, int); }; extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); -- cgit v1.2.2 From 40d3e0f4942ec12c4521fe1b2a2b774164cd2c80 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 22 Sep 2011 11:30:50 +0100 Subject: clk: provide prepare/unprepare functions As discussed previously, there's the need on some platforms to run some parts of clk_enable() in contexts which can schedule. The solution which was agreed upon was to provide clk_prepare() and clk_unprepare() to contain this parts, while clk_enable() and clk_disable() perform the atomic part. This patch provides a common definition for clk_prepare() and clk_unprepare() in linux/clk.h, and provides an upgrade path for existing implementation and drivers: drivers can start using clk_prepare() and clk_unprepare() once this patch is merged without having to wait for platform support. Platforms can then start to provide these additional functions. Eventually, HAVE_CLK_PREPARE will be removed from the kernel, and everyone will have to provide these new APIs. Acked-by: Saravana Kannan Signed-off-by: Russell King --- include/linux/clk.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk.h b/include/linux/clk.h index 1d37f42ac294..7213b52b2c0e 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -11,6 +11,8 @@ #ifndef __LINUX_CLK_H #define __LINUX_CLK_H +#include + struct device; /* @@ -40,12 +42,32 @@ struct clk; */ struct clk *clk_get(struct device *dev, const char *id); +/** + * clk_prepare - prepare a clock source + * @clk: clock source + * + * This prepares the clock source for use. + * + * Must not be called from within atomic context. + */ +#ifdef CONFIG_HAVE_CLK_PREPARE +int clk_prepare(struct clk *clk); +#else +static inline int clk_prepare(struct clk *clk) +{ + might_sleep(); + return 0; +} +#endif + /** * clk_enable - inform the system when the clock source should be running. * @clk: clock source * * If the clock can not be enabled/disabled, this should return success. * + * May be called from atomic contexts. + * * Returns success (0) or negative errno. */ int clk_enable(struct clk *clk); @@ -57,6 +79,8 @@ int clk_enable(struct clk *clk); * Inform the system that a clock source is no longer required by * a driver and may be shut down. * + * May be called from atomic contexts. + * * Implementation detail: if the clock source is shared between * multiple drivers, clk_enable() calls must be balanced by the * same number of clk_disable() calls for the clock source to be @@ -64,6 +88,25 @@ int clk_enable(struct clk *clk); */ void clk_disable(struct clk *clk); + +/** + * clk_unprepare - undo preparation of a clock source + * @clk: clock source + * + * This undoes a previously prepared clock. The caller must balance + * the number of prepare and unprepare calls. + * + * Must not be called from within atomic context. + */ +#ifdef CONFIG_HAVE_CLK_PREPARE +void clk_unprepare(struct clk *clk); +#else +static inline void clk_unprepare(struct clk *clk) +{ + might_sleep(); +} +#endif + /** * clk_get_rate - obtain the current clock rate (in Hz) for a clock source. * This is only valid once the clock source has been enabled. -- cgit v1.2.2 From 395cf9691d72173d8cdaa613c5f0255f993af94b Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 15 Aug 2011 02:02:26 +0200 Subject: doc: fix broken references There are numerous broken references to Documentation files (in other Documentation files, in comments, etc.). These broken references are caused by typo's in the references, and by renames or removals of the Documentation files. Some broken references are simply odd. Fix these broken references, sometimes by dropping the irrelevant text they were part of. Signed-off-by: Paul Bolle Signed-off-by: Jiri Kosina --- include/linux/io-mapping.h | 2 +- include/linux/isdn.h | 2 +- include/linux/platform_data/ntc_thermistor.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index 8cdcc2a199ad..c81ed2ac16bd 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -27,7 +27,7 @@ * The io_mapping mechanism provides an abstraction for mapping * individual pages from an io device to the CPU in an efficient fashion. * - * See Documentation/io_mapping.txt + * See Documentation/io-mapping.txt */ #ifdef CONFIG_HAVE_ATOMIC_IOMAP diff --git a/include/linux/isdn.h b/include/linux/isdn.h index 44cd663c53b6..4ccf95d681b4 100644 --- a/include/linux/isdn.h +++ b/include/linux/isdn.h @@ -68,7 +68,7 @@ #define ISDN_NET_ENCAP_SYNCPPP 4 #define ISDN_NET_ENCAP_UIHDLC 5 #define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive */ -#define ISDN_NET_ENCAP_X25IFACE 7 /* Documentation/networking/x25-iface.txt*/ +#define ISDN_NET_ENCAP_X25IFACE 7 /* Documentation/networking/x25-iface.txt */ #define ISDN_NET_ENCAP_MAX_ENCAP ISDN_NET_ENCAP_X25IFACE /* Facility which currently uses an ISDN-channel */ diff --git a/include/linux/platform_data/ntc_thermistor.h b/include/linux/platform_data/ntc_thermistor.h index abd286215279..88734e871e3a 100644 --- a/include/linux/platform_data/ntc_thermistor.h +++ b/include/linux/platform_data/ntc_thermistor.h @@ -36,7 +36,7 @@ struct ntc_thermistor_platform_data { * read_uV() * * How to setup pullup_ohm, pulldown_ohm, and connect is - * described at Documentation/hwmon/ntc + * described at Documentation/hwmon/ntc_thermistor * * pullup/down_ohm: 0 for infinite / not-connected */ -- cgit v1.2.2 From e9f935e3e8dc0bddd0df6d148165d95925422502 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Sun, 25 Sep 2011 14:53:30 +0530 Subject: nl80211/cfg80211: Add support to disable CCK rate for management frame Add a new nl80211 attribute to specify whether to send the management frames in CCK rate or not. As of now the wpa_supplicant is disabling CCK rate at P2P init itself. So this patch helps to send P2P probe request/probe response/action frames being sent at non CCK rate in 2GHz without disabling 11b rates. This attribute is used with NL80211_CMD_TRIGGER_SCAN and NL80211_CMD_FRAME commands to disable CCK rate for management frame transmission. Cc: Jouni Malinen Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- include/linux/nl80211.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 460b12a8ef66..c73582fb9d20 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -238,6 +238,8 @@ * * @NL80211_CMD_GET_SCAN: get scan results * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters + * %NL80211_ATTR_TX_NO_CCK_RATE is used to decide whether to send the + * probe requests at CCK rate or not. * @NL80211_CMD_NEW_SCAN_RESULTS: scan notification (as a reply to * NL80211_CMD_GET_SCAN and on the "scan" multicast group) * @NL80211_CMD_SCAN_ABORTED: scan was aborted, for unspecified reasons, @@ -432,6 +434,8 @@ * specified using %NL80211_ATTR_DURATION. When called, this operation * returns a cookie (%NL80211_ATTR_COOKIE) that will be included with the * TX status event pertaining to the TX request. + * %NL80211_ATTR_TX_NO_CCK_RATE is used to decide whether to send the + * management frames at CCK rate or not in 2GHz band. * @NL80211_CMD_FRAME_WAIT_CANCEL: When an off-channel TX was requested, this * command may be used with the corresponding cookie to cancel the wait * time if it is known that it is no longer necessary. @@ -1078,6 +1082,13 @@ enum nl80211_commands { * @NL80211_ATTR_PMKSA_CANDIDATE: Nested attribute containing the PMKSA caching * candidate information, see &enum nl80211_pmksa_candidate_attr. * + * @NL80211_ATTR_TX_NO_CCK_RATE: Indicates whether to use CCK rate or not + * for management frames transmission. In order to avoid p2p probe/action + * frames are being transmitted at CCK rate in 2GHz band, the user space + * applications use this attribute. + * This attribute is used with %NL80211_CMD_TRIGGER_SCAN and + * %NL80211_CMD_FRAME commands. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1298,6 +1309,8 @@ enum nl80211_attrs { NL80211_ATTR_PMKSA_CANDIDATE, + NL80211_ATTR_TX_NO_CCK_RATE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.2 From 9f26490412cf15b04ac8f44a512ba0b09e774576 Mon Sep 17 00:00:00 2001 From: Alex Shi Date: Thu, 1 Sep 2011 11:32:18 +0800 Subject: slub: correct comments error for per cpu partial Correct comment errors, that mistake cpu partial objects number as pages number, may make reader misunderstand. Signed-off-by: Alex Shi Reviewed-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 4890ef79d752..a32bcfdc7834 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -82,7 +82,7 @@ struct kmem_cache { int size; /* The size of an object including meta data */ int objsize; /* The size of an object without meta data */ int offset; /* Free pointer offset. */ - int cpu_partial; /* Number of per cpu partial pages to keep around */ + int cpu_partial; /* Number of per cpu partial objects to keep around */ struct kmem_cache_order_objects oo; /* Allocation and freeing of slabs */ -- cgit v1.2.2 From f01536e3d68bacaf827325b716c743c542d20b64 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 28 Sep 2011 10:04:21 -0700 Subject: Input: add a driver for TSC-40 serial touchscreen This patch adds the TSC-40 serial touchscreen driver and should be compatible with TSC-10 and TSC-25. The driver was written by Linutronix on behalf of Bachmann electronic GmbH. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Christian Gmeiner Signed-off-by: Dmitry Torokhov --- include/linux/serio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serio.h b/include/linux/serio.h index e26f4788845f..be7dfb0f12d0 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -199,5 +199,6 @@ static inline void serio_continue_rx(struct serio *serio) #define SERIO_DYNAPRO 0x3a #define SERIO_HAMPSHIRE 0x3b #define SERIO_PS2MULT 0x3c +#define SERIO_TSC40 0x3d #endif -- cgit v1.2.2 From f786ecba4158880f8cdc0ebb93e7d78e6c125449 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Wed, 21 Sep 2011 09:26:44 +0000 Subject: connector: add comm change event report to proc connector Add an event to monitor comm value changes of tasks. Such an event becomes vital, if someone desires to control threads of a process in different manner. A natural characteristic of threads is its comm value, and helpfully application developers have an opportunity to change it in runtime. Reporting about such events via proc connector allows to fine-grain monitoring and control potentials, for instance a process control daemon listening to proc connector and following comm value policies can place specific threads to assigned cgroup partitions. It might be possible to achieve a pale partial one-shot likeness without this update, if an application changes comm value of a thread generator task beforehand, then a new thread is cloned, and after that proc connector listener gets the fork event and reads new thread's comm value from procfs stat file, but this change visibly simplifies and extends the matter. Signed-off-by: Vladimir Zapolskiy Acked-by: Evgeniy Polyakov Cc: David Miller Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- include/linux/cn_proc.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cn_proc.h b/include/linux/cn_proc.h index 12c517b51ca2..d03612b196e1 100644 --- a/include/linux/cn_proc.h +++ b/include/linux/cn_proc.h @@ -54,6 +54,7 @@ struct proc_event { PROC_EVENT_GID = 0x00000040, PROC_EVENT_SID = 0x00000080, PROC_EVENT_PTRACE = 0x00000100, + PROC_EVENT_COMM = 0x00000200, /* "next" should be 0x00000400 */ /* "last" is the last process event: exit */ PROC_EVENT_EXIT = 0x80000000 @@ -103,6 +104,12 @@ struct proc_event { __kernel_pid_t tracer_tgid; } ptrace; + struct comm_proc_event { + __kernel_pid_t process_pid; + __kernel_pid_t process_tgid; + char comm[16]; + } comm; + struct exit_proc_event { __kernel_pid_t process_pid; __kernel_pid_t process_tgid; @@ -118,6 +125,7 @@ void proc_exec_connector(struct task_struct *task); void proc_id_connector(struct task_struct *task, int which_id); void proc_sid_connector(struct task_struct *task); void proc_ptrace_connector(struct task_struct *task, int which_id); +void proc_comm_connector(struct task_struct *task); void proc_exit_connector(struct task_struct *task); #else static inline void proc_fork_connector(struct task_struct *task) @@ -133,6 +141,9 @@ static inline void proc_id_connector(struct task_struct *task, static inline void proc_sid_connector(struct task_struct *task) {} +static inline void proc_comm_connector(struct task_struct *task) +{} + static inline void proc_ptrace_connector(struct task_struct *task, int ptrace_id) {} -- cgit v1.2.2 From d4fa0e35fdbd54acf791fa3793d6d17f7795f7ae Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Tue, 27 Sep 2011 21:49:12 +0000 Subject: net: sh_eth: move the asm/sh_eth.h to include/linux/ Signed-off-by: Yoshihiro Shimoda Signed-off-by: David S. Miller --- include/linux/sh_eth.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 include/linux/sh_eth.h (limited to 'include/linux') diff --git a/include/linux/sh_eth.h b/include/linux/sh_eth.h new file mode 100644 index 000000000000..2076acf8294d --- /dev/null +++ b/include/linux/sh_eth.h @@ -0,0 +1,25 @@ +#ifndef __ASM_SH_ETH_H__ +#define __ASM_SH_ETH_H__ + +#include + +enum {EDMAC_LITTLE_ENDIAN, EDMAC_BIG_ENDIAN}; +enum { + SH_ETH_REG_GIGABIT, + SH_ETH_REG_FAST_SH4, + SH_ETH_REG_FAST_SH3_SH2 +}; + +struct sh_eth_plat_data { + int phy; + int edmac_endian; + int register_type; + phy_interface_t phy_interface; + void (*set_mdio_gate)(void *addr); + + unsigned char mac_addr[6]; + unsigned no_ether_link:1; + unsigned ether_link_active_low:1; +}; + +#endif -- cgit v1.2.2 From b3fbab0571eb09746cc0283648165ec00efc8eb2 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 24 May 2011 08:31:09 -0700 Subject: rcu: Restore checks for blocking in RCU read-side critical sections Long ago, using TREE_RCU with PREEMPT would result in "scheduling while atomic" diagnostics if you blocked in an RCU read-side critical section. However, PREEMPT now implies TREE_PREEMPT_RCU, which defeats this diagnostic. This commit therefore adds a replacement diagnostic based on PROVE_RCU. Because rcu_lockdep_assert() and lockdep_rcu_dereference() are now being used for things that have nothing to do with rcu_dereference(), rename lockdep_rcu_dereference() to lockdep_rcu_suspicious() and add a third argument that is a string indicating what is suspicious. This third argument is passed in from a new third argument to rcu_lockdep_assert(). Update all calls to rcu_lockdep_assert() to add an informative third argument. Also, add a pair of rcu_lockdep_assert() calls from within rcu_note_context_switch(), one complaining if a context switch occurs in an RCU-bh read-side critical section and another complaining if a context switch occurs in an RCU-sched read-side critical section. These are present only if the PROVE_RCU kernel parameter is enabled. Finally, fix some checkpatch whitespace complaints in lockdep.c. Again, you must enable PROVE_RCU to see these new diagnostics. But you are enabling PROVE_RCU to check out new RCU uses in any case, aren't you? Signed-off-by: Paul E. McKenney --- include/linux/lockdep.h | 2 +- include/linux/rcupdate.h | 28 ++++++++++++++++++++++------ 2 files changed, 23 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index ef820a3c378b..b6a56e37284c 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -548,7 +548,7 @@ do { \ #endif #ifdef CONFIG_PROVE_RCU -extern void lockdep_rcu_dereference(const char *file, const int line); +void lockdep_rcu_suspicious(const char *file, const int line, const char *s); #endif #endif /* __LINUX_LOCKDEP_H */ diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 8f4f881a0ad8..8e7470d8b676 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -297,19 +297,31 @@ extern int rcu_my_thread_group_empty(void); /** * rcu_lockdep_assert - emit lockdep splat if specified condition not met * @c: condition to check + * @s: informative message */ -#define rcu_lockdep_assert(c) \ +#define rcu_lockdep_assert(c, s) \ do { \ static bool __warned; \ if (debug_lockdep_rcu_enabled() && !__warned && !(c)) { \ __warned = true; \ - lockdep_rcu_dereference(__FILE__, __LINE__); \ + lockdep_rcu_suspicious(__FILE__, __LINE__, s); \ } \ } while (0) +#define rcu_sleep_check() \ + do { \ + rcu_lockdep_assert(!lock_is_held(&rcu_bh_lock_map), \ + "Illegal context switch in RCU-bh" \ + " read-side critical section"); \ + rcu_lockdep_assert(!lock_is_held(&rcu_sched_lock_map), \ + "Illegal context switch in RCU-sched"\ + " read-side critical section"); \ + } while (0) + #else /* #ifdef CONFIG_PROVE_RCU */ -#define rcu_lockdep_assert(c) do { } while (0) +#define rcu_lockdep_assert(c, s) do { } while (0) +#define rcu_sleep_check() do { } while (0) #endif /* #else #ifdef CONFIG_PROVE_RCU */ @@ -338,14 +350,16 @@ extern int rcu_my_thread_group_empty(void); #define __rcu_dereference_check(p, c, space) \ ({ \ typeof(*p) *_________p1 = (typeof(*p)*__force )ACCESS_ONCE(p); \ - rcu_lockdep_assert(c); \ + rcu_lockdep_assert(c, "suspicious rcu_dereference_check()" \ + " usage"); \ rcu_dereference_sparse(p, space); \ smp_read_barrier_depends(); \ ((typeof(*p) __force __kernel *)(_________p1)); \ }) #define __rcu_dereference_protected(p, c, space) \ ({ \ - rcu_lockdep_assert(c); \ + rcu_lockdep_assert(c, "suspicious rcu_dereference_protected()" \ + " usage"); \ rcu_dereference_sparse(p, space); \ ((typeof(*p) __force __kernel *)(p)); \ }) @@ -359,7 +373,9 @@ extern int rcu_my_thread_group_empty(void); #define __rcu_dereference_index_check(p, c) \ ({ \ typeof(p) _________p1 = ACCESS_ONCE(p); \ - rcu_lockdep_assert(c); \ + rcu_lockdep_assert(c, \ + "suspicious rcu_dereference_index_check()" \ + " usage"); \ smp_read_barrier_depends(); \ (_________p1); \ }) -- cgit v1.2.2 From 990987511c200877bb20201772d5de46644151f2 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 31 May 2011 21:03:55 -0700 Subject: rcu: Move rcu_head definition to types.h Take a first step towards untangling Linux kernel header files by placing the struct rcu_head definition into include/linux/types.h and including include/linux/types.h in include/linux/rcupdate.h where struct rcu_head used to be defined. The actual inclusion point for include/linux/types.h is with the rest of the #include directives rather than at the point where struct rcu_head used to be defined, as suggested by Mathieu Desnoyers. Once this is in place, then header files that need only rcu_head can include types.h rather than rcupdate.h. Signed-off-by: Paul E. McKenney Cc: Paul Gortmaker Acked-by: Mathieu Desnoyers --- include/linux/rcupdate.h | 11 +---------- include/linux/types.h | 10 ++++++++++ 2 files changed, 11 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 8e7470d8b676..87bd390df73f 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -33,6 +33,7 @@ #ifndef __LINUX_RCUPDATE_H #define __LINUX_RCUPDATE_H +#include #include #include #include @@ -64,16 +65,6 @@ static inline void rcutorture_record_progress(unsigned long vernum) #define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b)) #define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) -/** - * struct rcu_head - callback structure for use with RCU - * @next: next update requests in a list - * @func: actual update function to call after the grace period. - */ -struct rcu_head { - struct rcu_head *next; - void (*func)(struct rcu_head *head); -}; - /* Exported common interfaces */ extern void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu)); diff --git a/include/linux/types.h b/include/linux/types.h index 176da8c1fbb1..57a97234bec1 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -238,6 +238,16 @@ struct ustat { char f_fpack[6]; }; +/** + * struct rcu_head - callback structure for use with RCU + * @next: next update requests in a list + * @func: actual update function to call after the grace period. + */ +struct rcu_head { + struct rcu_head *next; + void (*func)(struct rcu_head *head); +}; + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #endif /* _LINUX_TYPES_H */ -- cgit v1.2.2 From 2c42818e962e2858334bf45bfc56662b3752df34 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 26 May 2011 22:14:36 -0700 Subject: rcu: Abstract common code for RCU grace-period-wait primitives Pull the code that waits for an RCU grace period into a single function, which is then called by synchronize_rcu() and friends in the case of TREE_RCU and TREE_PREEMPT_RCU, and from rcu_barrier() and friends in the case of TINY_RCU and TINY_PREEMPT_RCU. Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 130 ++++++++++++++++++++++++++--------------------- include/linux/rcutiny.h | 16 +++++- include/linux/rcutree.h | 2 + 3 files changed, 90 insertions(+), 58 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 87bd390df73f..ae5327de41aa 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -66,11 +66,73 @@ static inline void rcutorture_record_progress(unsigned long vernum) #define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) /* Exported common interfaces */ + +#ifdef CONFIG_PREEMPT_RCU + +/** + * call_rcu() - Queue an RCU callback for invocation after a grace period. + * @head: structure to be used for queueing the RCU updates. + * @func: actual callback function to be invoked after the grace period + * + * The callback function will be invoked some time after a full grace + * period elapses, in other words after all pre-existing RCU read-side + * critical sections have completed. However, the callback function + * might well execute concurrently with RCU read-side critical sections + * that started after call_rcu() was invoked. RCU read-side critical + * sections are delimited by rcu_read_lock() and rcu_read_unlock(), + * and may be nested. + */ +extern void call_rcu(struct rcu_head *head, + void (*func)(struct rcu_head *head)); + +#else /* #ifdef CONFIG_PREEMPT_RCU */ + +/* In classic RCU, call_rcu() is just call_rcu_sched(). */ +#define call_rcu call_rcu_sched + +#endif /* #else #ifdef CONFIG_PREEMPT_RCU */ + +/** + * call_rcu_bh() - Queue an RCU for invocation after a quicker grace period. + * @head: structure to be used for queueing the RCU updates. + * @func: actual callback function to be invoked after the grace period + * + * The callback function will be invoked some time after a full grace + * period elapses, in other words after all currently executing RCU + * read-side critical sections have completed. call_rcu_bh() assumes + * that the read-side critical sections end on completion of a softirq + * handler. This means that read-side critical sections in process + * context must not be interrupted by softirqs. This interface is to be + * used when most of the read-side critical sections are in softirq context. + * RCU read-side critical sections are delimited by : + * - rcu_read_lock() and rcu_read_unlock(), if in interrupt context. + * OR + * - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context. + * These may be nested. + */ +extern void call_rcu_bh(struct rcu_head *head, + void (*func)(struct rcu_head *head)); + +/** + * call_rcu_sched() - Queue an RCU for invocation after sched grace period. + * @head: structure to be used for queueing the RCU updates. + * @func: actual callback function to be invoked after the grace period + * + * The callback function will be invoked some time after a full grace + * period elapses, in other words after all currently executing RCU + * read-side critical sections have completed. call_rcu_sched() assumes + * that the read-side critical sections end on enabling of preemption + * or on voluntary preemption. + * RCU read-side critical sections are delimited by : + * - rcu_read_lock_sched() and rcu_read_unlock_sched(), + * OR + * anything that disables preemption. + * These may be nested. + */ extern void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu)); + extern void synchronize_sched(void); -extern void rcu_barrier_bh(void); -extern void rcu_barrier_sched(void); static inline void __rcu_read_lock_bh(void) { @@ -143,6 +205,15 @@ static inline void rcu_exit_nohz(void) #endif /* #else #ifdef CONFIG_NO_HZ */ +/* + * Infrastructure to implement the synchronize_() primitives in + * TREE_RCU and rcu_barrier_() primitives in TINY_RCU. + */ + +typedef void call_rcu_func_t(struct rcu_head *head, + void (*func)(struct rcu_head *head)); +void wait_rcu_gp(call_rcu_func_t crf); + #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) #include #elif defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU) @@ -723,61 +794,6 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) #define RCU_INIT_POINTER(p, v) \ p = (typeof(*v) __force __rcu *)(v) -/* Infrastructure to implement the synchronize_() primitives. */ - -struct rcu_synchronize { - struct rcu_head head; - struct completion completion; -}; - -extern void wakeme_after_rcu(struct rcu_head *head); - -#ifdef CONFIG_PREEMPT_RCU - -/** - * call_rcu() - Queue an RCU callback for invocation after a grace period. - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all pre-existing RCU read-side - * critical sections have completed. However, the callback function - * might well execute concurrently with RCU read-side critical sections - * that started after call_rcu() was invoked. RCU read-side critical - * sections are delimited by rcu_read_lock() and rcu_read_unlock(), - * and may be nested. - */ -extern void call_rcu(struct rcu_head *head, - void (*func)(struct rcu_head *head)); - -#else /* #ifdef CONFIG_PREEMPT_RCU */ - -/* In classic RCU, call_rcu() is just call_rcu_sched(). */ -#define call_rcu call_rcu_sched - -#endif /* #else #ifdef CONFIG_PREEMPT_RCU */ - -/** - * call_rcu_bh() - Queue an RCU for invocation after a quicker grace period. - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. call_rcu_bh() assumes - * that the read-side critical sections end on completion of a softirq - * handler. This means that read-side critical sections in process - * context must not be interrupted by softirqs. This interface is to be - * used when most of the read-side critical sections are in softirq context. - * RCU read-side critical sections are delimited by : - * - rcu_read_lock() and rcu_read_unlock(), if in interrupt context. - * OR - * - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context. - * These may be nested. - */ -extern void call_rcu_bh(struct rcu_head *head, - void (*func)(struct rcu_head *head)); - /* * debug_rcu_head_queue()/debug_rcu_head_unqueue() are used internally * by call_rcu() and rcu callback execution, and are therefore not part of the diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 52b3e0281fd0..4eab233a00cd 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -31,6 +31,16 @@ static inline void rcu_init(void) { } +static inline void rcu_barrier_bh(void) +{ + wait_rcu_gp(call_rcu_bh); +} + +static inline void rcu_barrier_sched(void) +{ + wait_rcu_gp(call_rcu_sched); +} + #ifdef CONFIG_TINY_RCU static inline void synchronize_rcu_expedited(void) @@ -45,9 +55,13 @@ static inline void rcu_barrier(void) #else /* #ifdef CONFIG_TINY_RCU */ -void rcu_barrier(void); void synchronize_rcu_expedited(void); +static inline void rcu_barrier(void) +{ + wait_rcu_gp(call_rcu); +} + #endif /* #else #ifdef CONFIG_TINY_RCU */ static inline void synchronize_rcu_bh(void) diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index e65d06634dd8..67458468f1a8 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -67,6 +67,8 @@ static inline void synchronize_rcu_bh_expedited(void) } extern void rcu_barrier(void); +extern void rcu_barrier_bh(void); +extern void rcu_barrier_sched(void); extern unsigned long rcutorture_testseq; extern unsigned long rcutorture_vernum; -- cgit v1.2.2 From 29c00b4a1d9e277786120032aa8364631820d863 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 17 Jun 2011 15:53:19 -0700 Subject: rcu: Add event-tracing for RCU callback invocation There was recently some controversy about the overhead of invoking RCU callbacks. Add TRACE_EVENT()s to obtain fine-grained timings for the start and stop of a batch of callbacks and also for each callback invoked. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 50 ------------------------------------------------ 1 file changed, 50 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index ae5327de41aa..dd2bc2c6a285 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -794,44 +794,6 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) #define RCU_INIT_POINTER(p, v) \ p = (typeof(*v) __force __rcu *)(v) -/* - * debug_rcu_head_queue()/debug_rcu_head_unqueue() are used internally - * by call_rcu() and rcu callback execution, and are therefore not part of the - * RCU API. Leaving in rcupdate.h because they are used by all RCU flavors. - */ - -#ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD -# define STATE_RCU_HEAD_READY 0 -# define STATE_RCU_HEAD_QUEUED 1 - -extern struct debug_obj_descr rcuhead_debug_descr; - -static inline void debug_rcu_head_queue(struct rcu_head *head) -{ - WARN_ON_ONCE((unsigned long)head & 0x3); - debug_object_activate(head, &rcuhead_debug_descr); - debug_object_active_state(head, &rcuhead_debug_descr, - STATE_RCU_HEAD_READY, - STATE_RCU_HEAD_QUEUED); -} - -static inline void debug_rcu_head_unqueue(struct rcu_head *head) -{ - debug_object_active_state(head, &rcuhead_debug_descr, - STATE_RCU_HEAD_QUEUED, - STATE_RCU_HEAD_READY); - debug_object_deactivate(head, &rcuhead_debug_descr); -} -#else /* !CONFIG_DEBUG_OBJECTS_RCU_HEAD */ -static inline void debug_rcu_head_queue(struct rcu_head *head) -{ -} - -static inline void debug_rcu_head_unqueue(struct rcu_head *head) -{ -} -#endif /* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */ - static __always_inline bool __is_kfree_rcu_offset(unsigned long offset) { return offset < 4096; @@ -850,18 +812,6 @@ void __kfree_rcu(struct rcu_head *head, unsigned long offset) call_rcu(head, (rcu_callback)offset); } -extern void kfree(const void *); - -static inline void __rcu_reclaim(struct rcu_head *head) -{ - unsigned long offset = (unsigned long)head->func; - - if (__is_kfree_rcu_offset(offset)) - kfree((void *)head - offset); - else - head->func(head); -} - /** * kfree_rcu() - kfree an object after a grace period. * @ptr: pointer to kfree -- cgit v1.2.2 From 965a002b4f1a458c5dcb334ec29f48a0046faa25 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sat, 18 Jun 2011 09:55:39 -0700 Subject: rcu: Make TINY_RCU also use softirq for RCU_BOOST=n This patch #ifdefs TINY_RCU kthreads out of the kernel unless RCU_BOOST=y, thus eliminating context-switch overhead if RCU priority boosting has not been configured. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/rcutiny.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 4eab233a00cd..00b7a5e493d2 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -27,9 +27,13 @@ #include +#ifdef CONFIG_RCU_BOOST static inline void rcu_init(void) { } +#else /* #ifdef CONFIG_RCU_BOOST */ +void rcu_init(void); +#endif /* #else #ifdef CONFIG_RCU_BOOST */ static inline void rcu_barrier_bh(void) { -- cgit v1.2.2 From 22507ed9b9d587486fb4681e93a8c58837738a25 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 18 Jul 2011 16:54:51 -0700 Subject: rcu: Remove unused and redundant interfaces The rcu_dereference_bh_protected() and rcu_dereference_sched_protected() macros are synonyms for rcu_dereference_protected() and are not used anywhere in mainline. This commit therefore removes them. Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index dd2bc2c6a285..caf22e84a743 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -578,26 +578,6 @@ extern int rcu_my_thread_group_empty(void); #define rcu_dereference_protected(p, c) \ __rcu_dereference_protected((p), (c), __rcu) -/** - * rcu_dereference_bh_protected() - fetch RCU-bh pointer when updates prevented - * @p: The pointer to read, prior to dereferencing - * @c: The conditions under which the dereference will take place - * - * This is the RCU-bh counterpart to rcu_dereference_protected(). - */ -#define rcu_dereference_bh_protected(p, c) \ - __rcu_dereference_protected((p), (c), __rcu) - -/** - * rcu_dereference_sched_protected() - fetch RCU-sched pointer when updates prevented - * @p: The pointer to read, prior to dereferencing - * @c: The conditions under which the dereference will take place - * - * This is the RCU-sched counterpart to rcu_dereference_protected(). - */ -#define rcu_dereference_sched_protected(p, c) \ - __rcu_dereference_protected((p), (c), __rcu) - /** * rcu_dereference() - fetch RCU-protected pointer for dereferencing -- cgit v1.2.2 From fc0763f53e3ff6a6bfa66934662a3446b9ca6f16 Mon Sep 17 00:00:00 2001 From: "Shi, Alex" Date: Thu, 28 Jul 2011 14:56:12 +0800 Subject: nohz: Remove nohz_cpu_mask RCU no longer uses this global variable, nor does anyone else. This commit therefore removes this variable. This reduces memory footprint and also removes some atomic instructions and memory barriers from the dyntick-idle path. Signed-off-by: Alex Shi Signed-off-by: Paul E. McKenney --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ac2c0578e0f..6ee91e20353b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -270,7 +270,6 @@ extern void init_idle_bootup_task(struct task_struct *idle); extern int runqueue_is_locked(int cpu); -extern cpumask_var_t nohz_cpu_mask; #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ) extern void select_nohz_load_balancer(int stop_tick); extern int get_nohz_timer_target(void); -- cgit v1.2.2 From d322f45ceed525daa9401154590bbae3222cfefb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 31 Jul 2011 22:09:25 -0700 Subject: rcu: Make rcu_assign_pointer() unconditionally insert a memory barrier Recent changes to gcc give warning messages on rcu_assign_pointers()'s checks that allow it to determine when it is OK to omit the memory barrier. Stephen Hemminger tried a number of gcc tricks to silence this warning, but #pragmas and CPP macros do not work together in the way that would be required to make this work. However, we now have RCU_INIT_POINTER(), which already omits this memory barrier, and which therefore may be used when assigning NULL to an RCU-protected pointer that is accessible to readers. This commit therefore makes rcu_assign_pointer() unconditionally emit the memory barrier. Reported-by: Stephen Hemminger Signed-off-by: Eric Dumazet Acked-by: David S. Miller Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index caf22e84a743..d7accc5f8892 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -443,9 +443,7 @@ extern int rcu_my_thread_group_empty(void); }) #define __rcu_assign_pointer(p, v, space) \ ({ \ - if (!__builtin_constant_p(v) || \ - ((v) != NULL)) \ - smp_wmb(); \ + smp_wmb(); \ (p) = (typeof(*v) __force space *)(v); \ }) -- cgit v1.2.2 From 6846c0c54074d47927c90eab4a805115e1ae3292 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sun, 31 Jul 2011 22:33:02 -0700 Subject: rcu: Improve rcu_assign_pointer() and RCU_INIT_POINTER() documentation The differences between rcu_assign_pointer() and RCU_INIT_POINTER() are subtle, and it is easy to use the the cheaper RCU_INIT_POINTER() when the more-expensive rcu_assign_pointer() should have been used instead. The consequences of this mistake are quite severe. This commit therefore carefully lays out the situations in which it it permissible to use RCU_INIT_POINTER(). Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 47 ++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 40 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index d7accc5f8892..af186e260c43 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -754,11 +754,18 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) * any prior initialization. Returns the value assigned. * * Inserts memory barriers on architectures that require them - * (pretty much all of them other than x86), and also prevents - * the compiler from reordering the code that initializes the - * structure after the pointer assignment. More importantly, this - * call documents which pointers will be dereferenced by RCU read-side - * code. + * (which is most of them), and also prevents the compiler from + * reordering the code that initializes the structure after the pointer + * assignment. More importantly, this call documents which pointers + * will be dereferenced by RCU read-side code. + * + * In some special cases, you may use RCU_INIT_POINTER() instead + * of rcu_assign_pointer(). RCU_INIT_POINTER() is a bit faster due + * to the fact that it does not constrain either the CPU or the compiler. + * That said, using RCU_INIT_POINTER() when you should have used + * rcu_assign_pointer() is a very bad thing that results in + * impossible-to-diagnose memory corruption. So please be careful. + * See the RCU_INIT_POINTER() comment header for details. */ #define rcu_assign_pointer(p, v) \ __rcu_assign_pointer((p), (v), __rcu) @@ -766,8 +773,34 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) /** * RCU_INIT_POINTER() - initialize an RCU protected pointer * - * Initialize an RCU-protected pointer in such a way to avoid RCU-lockdep - * splats. + * Initialize an RCU-protected pointer in special cases where readers + * do not need ordering constraints on the CPU or the compiler. These + * special cases are: + * + * 1. This use of RCU_INIT_POINTER() is NULLing out the pointer -or- + * 2. The caller has taken whatever steps are required to prevent + * RCU readers from concurrently accessing this pointer -or- + * 3. The referenced data structure has already been exposed to + * readers either at compile time or via rcu_assign_pointer() -and- + * a. You have not made -any- reader-visible changes to + * this structure since then -or- + * b. It is OK for readers accessing this structure from its + * new location to see the old state of the structure. (For + * example, the changes were to statistical counters or to + * other state where exact synchronization is not required.) + * + * Failure to follow these rules governing use of RCU_INIT_POINTER() will + * result in impossible-to-diagnose memory corruption. As in the structures + * will look OK in crash dumps, but any concurrent RCU readers might + * see pre-initialized values of the referenced data structure. So + * please be very careful how you use RCU_INIT_POINTER()!!! + * + * If you are creating an RCU-protected linked structure that is accessed + * by a single external-to-structure RCU-protected pointer, then you may + * use RCU_INIT_POINTER() to initialize the internal RCU-protected + * pointers, but you must use rcu_assign_pointer() to initialize the + * external-to-structure pointer -after- you have completely initialized + * the reader-accessible portions of the linked structure. */ #define RCU_INIT_POINTER(p, v) \ p = (typeof(*v) __force __rcu *)(v) -- cgit v1.2.2 From 6206ab9bab620fc0fbbed30ce20d145b0b3d1840 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 1 Aug 2011 06:22:11 -0700 Subject: rcu: Move __rcu_read_unlock()'s barrier() within if-statement We only need to constrain the compiler if we are actually exiting the top-level RCU read-side critical section. This commit therefore moves the first barrier() cal in __rcu_read_unlock() to inside the "if" statement, thus avoiding needless register flushes for inner rcu_read_unlock() calls. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index af186e260c43..2cf4226ade7e 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -134,16 +134,6 @@ extern void call_rcu_sched(struct rcu_head *head, extern void synchronize_sched(void); -static inline void __rcu_read_lock_bh(void) -{ - local_bh_disable(); -} - -static inline void __rcu_read_unlock_bh(void) -{ - local_bh_enable(); -} - #ifdef CONFIG_PREEMPT_RCU extern void __rcu_read_lock(void); @@ -686,7 +676,7 @@ static inline void rcu_read_unlock(void) */ static inline void rcu_read_lock_bh(void) { - __rcu_read_lock_bh(); + local_bh_disable(); __acquire(RCU_BH); rcu_read_acquire_bh(); } @@ -700,7 +690,7 @@ static inline void rcu_read_unlock_bh(void) { rcu_read_release_bh(); __release(RCU_BH); - __rcu_read_unlock_bh(); + local_bh_enable(); } /** -- cgit v1.2.2 From 82e78d80fc392ac7e98326bc8beeb8a679913ffd Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 4 Aug 2011 07:55:34 -0700 Subject: rcu: Simplify unboosting checks Commit 7765be (Fix RCU_BOOST race handling current->rcu_read_unlock_special) introduced a new ->rcu_boosted field in the task structure. This is redundant because the existing ->rcu_boost_mutex will be non-NULL at any time that ->rcu_boosted is nonzero. Therefore, this commit removes ->rcu_boosted and tests ->rcu_boost_mutex instead. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/sched.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6ee91e20353b..acca43560805 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1259,9 +1259,6 @@ struct task_struct { #ifdef CONFIG_PREEMPT_RCU int rcu_read_lock_nesting; char rcu_read_unlock_special; -#if defined(CONFIG_RCU_BOOST) && defined(CONFIG_TREE_PREEMPT_RCU) - int rcu_boosted; -#endif /* #if defined(CONFIG_RCU_BOOST) && defined(CONFIG_TREE_PREEMPT_RCU) */ struct list_head rcu_node_entry; #endif /* #ifdef CONFIG_PREEMPT_RCU */ #ifdef CONFIG_TREE_PREEMPT_RCU -- cgit v1.2.2 From d178bc3a708f39cbfefc3fab37032d3f2511b4ec Mon Sep 17 00:00:00 2001 From: Serge Hallyn Date: Mon, 26 Sep 2011 10:45:18 -0500 Subject: user namespace: usb: make usb urbs user namespace aware (v2) Add to the dev_state and alloc_async structures the user namespace corresponding to the uid and euid. Pass these to kill_pid_info_as_uid(), which can then implement a proper, user-namespace-aware uid check. Changelog: Sep 20: Per Oleg's suggestion: Instead of caching and passing user namespace, uid, and euid each separately, pass a struct cred. Sep 26: Address Alan Stern's comments: don't define a struct cred at usbdev_open(), and take and put a cred at async_completed() to ensure it lasts for the duration of kill_pid_info_as_cred(). Signed-off-by: Serge Hallyn Cc: Oleg Nesterov Cc: "Eric W. Biederman" Cc: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- include/linux/sched.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ac2c0578e0f..57ddb5283d9f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2166,7 +2166,8 @@ extern int force_sigsegv(int, struct task_struct *); extern int force_sig_info(int, struct siginfo *, struct task_struct *); extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp); extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid); -extern int kill_pid_info_as_uid(int, struct siginfo *, struct pid *, uid_t, uid_t, u32); +extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *, + const struct cred *, u32); extern int kill_pgrp(struct pid *pid, int sig, int priv); extern int kill_pid(struct pid *pid, int sig, int priv); extern int kill_proc_info(int, struct siginfo *, pid_t); -- cgit v1.2.2 From 3a1e362e3f3cd571b3974b8d44b8e358ec7a098c Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 3 Aug 2011 10:11:42 +0100 Subject: OF: Add of_match_ptr() macro Add a macro of_match_ptr() that allows the .of_match_table entry in the driver structures to be assigned without having an #ifdef xxx NULL for the case that OF is not enabled Signed-off-by: Ben Dooks Signed-off-by: Grant Likely --- include/linux/of.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 83a61f3b443c..53107b09cbdf 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -242,6 +242,7 @@ extern void of_attach_node(struct device_node *); extern void of_detach_node(struct device_node *); #endif +#define of_match_ptr(_ptr) (_ptr) #else /* CONFIG_OF */ static inline bool of_have_populated_dt(void) @@ -280,6 +281,7 @@ static inline const void *of_get_property(const struct device_node *node, return NULL; } +#define of_match_ptr(_ptr) NULL #endif /* CONFIG_OF */ static inline int of_property_read_u32(const struct device_node *np, -- cgit v1.2.2 From 6eb0f5e0154facfe4f0acdb9f474cde773319efc Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Thu, 29 Sep 2011 14:36:27 +0100 Subject: regmap: Implement regcache_cache_bypass helper function Ensure we've got a function so users can enable/disable the cache bypass option. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 76ac255a17a5..3daac2d8dc37 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -142,5 +142,6 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, int regcache_sync(struct regmap *map); void regcache_cache_only(struct regmap *map, bool enable); +void regcache_cache_bypass(struct regmap *map, bool enable); #endif -- cgit v1.2.2 From 0ed6d2d27bcc2ace454a8c55446e1bc3efd2d529 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Tue, 27 Sep 2011 07:36:40 -0400 Subject: iommu/core: let drivers know if an iommu fault handler isn't installed Make report_iommu_fault() return -ENOSYS whenever an iommu fault handler isn't installed, so IOMMU drivers can then do their own platform-specific default behavior if they wanted. Fault handlers can still return -ENOSYS in case they want to elicit the default behavior of the IOMMU drivers. Signed-off-by: Ohad Ben-Cohen Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index d084e8777e0e..ddad0ae0a433 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -98,11 +98,15 @@ extern void iommu_set_fault_handler(struct iommu_domain *domain, * Returns 0 on success and an appropriate error code otherwise (if dynamic * PTE/TLB loading will one day be supported, implementations will be able * to tell whether it succeeded or not according to this return value). + * + * Specifically, -ENOSYS is returned if a fault handler isn't installed + * (though fault handlers can also return -ENOSYS, in case they want to + * elicit the default behavior of the IOMMU drivers). */ static inline int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags) { - int ret = 0; + int ret = -ENOSYS; /* * if upper layers showed interest and installed a fault handler, -- cgit v1.2.2 From 109086ce0b0f94760bdb0e8e2566ff8a2d673639 Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Wed, 28 Sep 2011 14:12:50 +0300 Subject: nl80211: support sending TDLS commands/frames Add support for sending high-level TDLS commands and TDLS frames via NL80211_CMD_TDLS_OPER and NL80211_CMD_TDLS_MGMT, respectively. Add appropriate cfg80211 callbacks for lower level drivers. Add wiphy capability flags for TDLS support and advertise them via nl80211. Signed-off-by: Arik Nemtsov Cc: Kalyan C Gaddam Signed-off-by: John W. Linville --- include/linux/nl80211.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index c73582fb9d20..a5ab23df5b17 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -506,6 +506,9 @@ * @NL80211_CMD_PMKSA_CANDIDATE: This is used as an event to inform userspace * of PMKSA caching dandidates. * + * @NL80211_CMD_TDLS_OPER: Perform a high-level TDLS command (e.g. link setup). + * @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -632,6 +635,9 @@ enum nl80211_commands { NL80211_CMD_PMKSA_CANDIDATE, + NL80211_CMD_TDLS_OPER, + NL80211_CMD_TDLS_MGMT, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -1089,6 +1095,20 @@ enum nl80211_commands { * This attribute is used with %NL80211_CMD_TRIGGER_SCAN and * %NL80211_CMD_FRAME commands. * + * @NL80211_ATTR_TDLS_ACTION: Low level TDLS action code (e.g. link setup + * request, link setup confirm, link teardown, etc.). Values are + * described in the TDLS (802.11z) specification. + * @NL80211_ATTR_TDLS_DIALOG_TOKEN: Non-zero token for uniquely identifying a + * TDLS conversation between two devices. + * @NL80211_ATTR_TDLS_OPERATION: High level TDLS operation; see + * &enum nl80211_tdls_operation, represented as a u8. + * @NL80211_ATTR_TDLS_SUPPORT: A flag indicating the device can operate + * as a TDLS peer sta. + * @NL80211_ATTR_TDLS_EXTERNAL_SETUP: The TDLS discovery/setup and teardown + * procedures should be performed by sending TDLS packets via + * %NL80211_CMD_TDLS_MGMT. Otherwise %NL80211_CMD_TDLS_OPER should be + * used for asking the driver to perform a TDLS operation. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1311,6 +1331,12 @@ enum nl80211_attrs { NL80211_ATTR_TX_NO_CCK_RATE, + NL80211_ATTR_TDLS_ACTION, + NL80211_ATTR_TDLS_DIALOG_TOKEN, + NL80211_ATTR_TDLS_OPERATION, + NL80211_ATTR_TDLS_SUPPORT, + NL80211_ATTR_TDLS_EXTERNAL_SETUP, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -2604,4 +2630,20 @@ enum nl80211_pmksa_candidate_attr { MAX_NL80211_PMKSA_CANDIDATE = NUM_NL80211_PMKSA_CANDIDATE - 1 }; +/** + * enum nl80211_tdls_operation - values for %NL80211_ATTR_TDLS_OPERATION + * @NL80211_TDLS_DISCOVERY_REQ: Send a TDLS discovery request + * @NL80211_TDLS_SETUP: Setup TDLS link + * @NL80211_TDLS_TEARDOWN: Teardown a TDLS link which is already established + * @NL80211_TDLS_ENABLE_LINK: Enable TDLS link + * @NL80211_TDLS_DISABLE_LINK: Disable TDLS link + */ +enum nl80211_tdls_operation { + NL80211_TDLS_DISCOVERY_REQ, + NL80211_TDLS_SETUP, + NL80211_TDLS_TEARDOWN, + NL80211_TDLS_ENABLE_LINK, + NL80211_TDLS_DISABLE_LINK, +}; + #endif /* __LINUX_NL80211_H */ -- cgit v1.2.2 From dfe018bf99537e42c816d3f543620a7e09fcf3cd Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Wed, 28 Sep 2011 14:12:52 +0300 Subject: mac80211: handle TDLS high-level commands and frames Register and implement the TDLS cfg80211 callback functions. Internally prepare and send TDLS management frames. We incorporate local STA capabilities and supported rates with extra IEs given by usermode. The resulting packet is either encapsulated in a data frame, or assembled as an action frame. It is transmitted either directly or through the AP, as mandated by the TDLS specification. Declare support for the TDLS external setup wiphy capability. This tells usermode to handle link setup and discovery on its own, and use the kernel driver for sending TDLS mgmt packets. Signed-off-by: Arik Nemtsov Cc: Kalyan C Gaddam Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 85 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/if_ether.h | 1 + 2 files changed, 86 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index b5e0a5c344fd..48363c3c40f8 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -759,6 +759,12 @@ struct ieee80211_mgmt { u8 action; u8 smps_control; } __attribute__ ((packed)) ht_smps; + struct { + u8 action_code; + u8 dialog_token; + __le16 capability; + u8 variable[0]; + } __packed tdls_discover_resp; } u; } __attribute__ ((packed)) action; } u; @@ -805,6 +811,52 @@ struct ieee80211_pspoll { u8 ta[6]; } __attribute__ ((packed)); +/* TDLS */ + +/* Link-id information element */ +struct ieee80211_tdls_lnkie { + u8 ie_type; /* Link Identifier IE */ + u8 ie_len; + u8 bssid[6]; + u8 init_sta[6]; + u8 resp_sta[6]; +} __packed; + +struct ieee80211_tdls_data { + u8 da[6]; + u8 sa[6]; + __be16 ether_type; + u8 payload_type; + u8 category; + u8 action_code; + union { + struct { + u8 dialog_token; + __le16 capability; + u8 variable[0]; + } __packed setup_req; + struct { + __le16 status_code; + u8 dialog_token; + __le16 capability; + u8 variable[0]; + } __packed setup_resp; + struct { + __le16 status_code; + u8 dialog_token; + u8 variable[0]; + } __packed setup_cfm; + struct { + __le16 reason_code; + u8 variable[0]; + } __packed teardown; + struct { + u8 dialog_token; + u8 variable[0]; + } __packed discover_req; + } u; +} __packed; + /** * struct ieee80211_bar - HT Block Ack Request * @@ -1196,6 +1248,8 @@ enum ieee80211_eid { WLAN_EID_TS_DELAY = 43, WLAN_EID_TCLAS_PROCESSING = 44, WLAN_EID_QOS_CAPA = 46, + /* 802.11z */ + WLAN_EID_LINK_ID = 101, /* 802.11s */ WLAN_EID_MESH_CONFIG = 113, WLAN_EID_MESH_ID = 114, @@ -1279,6 +1333,7 @@ enum ieee80211_category { WLAN_CATEGORY_HT = 7, WLAN_CATEGORY_SA_QUERY = 8, WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9, + WLAN_CATEGORY_TDLS = 12, WLAN_CATEGORY_MESH_ACTION = 13, WLAN_CATEGORY_MULTIHOP_ACTION = 14, WLAN_CATEGORY_SELF_PROTECTED = 15, @@ -1342,6 +1397,36 @@ enum ieee80211_key_len { WLAN_KEY_LEN_AES_CMAC = 16, }; +/* Public action codes */ +enum ieee80211_pub_actioncode { + WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14, +}; + +/* TDLS action codes */ +enum ieee80211_tdls_actioncode { + WLAN_TDLS_SETUP_REQUEST = 0, + WLAN_TDLS_SETUP_RESPONSE = 1, + WLAN_TDLS_SETUP_CONFIRM = 2, + WLAN_TDLS_TEARDOWN = 3, + WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4, + WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5, + WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6, + WLAN_TDLS_PEER_PSM_REQUEST = 7, + WLAN_TDLS_PEER_PSM_RESPONSE = 8, + WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9, + WLAN_TDLS_DISCOVERY_REQUEST = 10, +}; + +/* + * TDLS capabililites to be enabled in the 5th byte of the + * @WLAN_EID_EXT_CAPABILITY information element + */ +#define WLAN_EXT_CAPA5_TDLS_ENABLED BIT(5) +#define WLAN_EXT_CAPA5_TDLS_PROHIBITED BIT(6) + +/* TDLS specific payload type in the LLC/SNAP header */ +#define WLAN_TDLS_SNAP_RFTYPE 0x2 + /** * enum - mesh path selection protocol identifier * diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h index a3d99ff6e3b5..49c38fc8dbc3 100644 --- a/include/linux/if_ether.h +++ b/include/linux/if_ether.h @@ -83,6 +83,7 @@ #define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */ #define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */ #define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */ +#define ETH_P_TDLS 0x890D /* TDLS */ #define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */ #define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ #define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ -- cgit v1.2.2 From 07ba55d7f1d0da174c9bc545c713b44cee760197 Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Wed, 28 Sep 2011 14:12:53 +0300 Subject: nl80211/mac80211: allow adding TDLS peers as stations When adding a TDLS peer STA, mark it with a new flag in both nl80211 and mac80211. Before adding a peer, make sure the wiphy supports TDLS and our operating mode is appropriate (managed). In addition, make sure all peers are removed on disassociation. A TDLS peer is first added just before link setup is initiated. In later setup stages we have more info about peer supported rates, capabilities, etc. This info is reported via nl80211_set_station(). Signed-off-by: Arik Nemtsov Cc: Kalyan C Gaddam Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index a5ab23df5b17..9d797f253d8e 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1434,6 +1434,7 @@ enum nl80211_iftype { * @NL80211_STA_FLAG_WME: station is WME/QoS capable * @NL80211_STA_FLAG_MFP: station uses management frame protection * @NL80211_STA_FLAG_AUTHENTICATED: station is authenticated + * @NL80211_STA_FLAG_TDLS_PEER: station is a TDLS peer * @NL80211_STA_FLAG_MAX: highest station flag number currently defined * @__NL80211_STA_FLAG_AFTER_LAST: internal use */ @@ -1444,6 +1445,7 @@ enum nl80211_sta_flags { NL80211_STA_FLAG_WME, NL80211_STA_FLAG_MFP, NL80211_STA_FLAG_AUTHENTICATED, + NL80211_STA_FLAG_TDLS_PEER, /* keep last */ __NL80211_STA_FLAG_AFTER_LAST, -- cgit v1.2.2 From 03ca370fbf7b76d6d002380dbdc2cdc2319f9c80 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 30 Sep 2011 22:35:12 +0200 Subject: PM / OPP: Add OPP availability change notifier. The patch enables to register notifier_block for an OPP-device in order to get notified for any changes in the availability of OPPs of the device. For example, if a new OPP is inserted or enable/disable status of an OPP is changed, the notifier is executed. This enables the usage of opp_add, opp_enable, and opp_disable to directly take effect with any connected entities such as cpufreq or devfreq. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Reviewed-by: Mike Turquette Reviewed-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/opp.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/opp.h b/include/linux/opp.h index 7020e9736fc5..87a9208f8aec 100644 --- a/include/linux/opp.h +++ b/include/linux/opp.h @@ -16,9 +16,14 @@ #include #include +#include struct opp; +enum opp_event { + OPP_EVENT_ADD, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE, +}; + #if defined(CONFIG_PM_OPP) unsigned long opp_get_voltage(struct opp *opp); @@ -40,6 +45,8 @@ int opp_enable(struct device *dev, unsigned long freq); int opp_disable(struct device *dev, unsigned long freq); +struct srcu_notifier_head *opp_get_notifier(struct device *dev); + #else static inline unsigned long opp_get_voltage(struct opp *opp) { @@ -89,6 +96,11 @@ static inline int opp_disable(struct device *dev, unsigned long freq) { return 0; } + +struct srcu_notifier_head *opp_get_notifier(struct device *dev) +{ + return ERR_PTR(-EINVAL); +} #endif /* CONFIG_PM */ #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) -- cgit v1.2.2 From a3c98b8b2ede1f4230f49f9af7135cd902e71e83 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Sun, 2 Oct 2011 00:19:15 +0200 Subject: PM: Introduce devfreq: generic DVFS framework with device-specific OPPs With OPPs, a device may have multiple operable frequency and voltage sets. However, there can be multiple possible operable sets and a system will need to choose one from them. In order to reduce the power consumption (by reducing frequency and voltage) without affecting the performance too much, a Dynamic Voltage and Frequency Scaling (DVFS) scheme may be used. This patch introduces the DVFS capability to non-CPU devices with OPPs. DVFS is a techique whereby the frequency and supplied voltage of a device is adjusted on-the-fly. DVFS usually sets the frequency as low as possible with given conditions (such as QoS assurance) and adjusts voltage according to the chosen frequency in order to reduce power consumption and heat dissipation. The generic DVFS for devices, devfreq, may appear quite similar with /drivers/cpufreq. However, cpufreq does not allow to have multiple devices registered and is not suitable to have multiple heterogenous devices with different (but simple) governors. Normally, DVFS mechanism controls frequency based on the demand for the device, and then, chooses voltage based on the chosen frequency. devfreq also controls the frequency based on the governor's frequency recommendation and let OPP pick up the pair of frequency and voltage based on the recommended frequency. Then, the chosen OPP is passed to device driver's "target" callback. When PM QoS is going to be used with the devfreq device, the device driver should enable OPPs that are appropriate with the current PM QoS requests. In order to do so, the device driver may call opp_enable and opp_disable at the notifier callback of PM QoS so that PM QoS's update_target() call enables the appropriate OPPs. Note that at least one of OPPs should be enabled at any time; be careful when there is a transition. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Reviewed-by: Mike Turquette Acked-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 203 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 include/linux/devfreq.h (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h new file mode 100644 index 000000000000..b3be3d3cbaa7 --- /dev/null +++ b/include/linux/devfreq.h @@ -0,0 +1,203 @@ +/* + * devfreq: Generic Dynamic Voltage and Frequency Scaling (DVFS) Framework + * for Non-CPU Devices. + * + * Copyright (C) 2011 Samsung Electronics + * MyungJoo Ham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_DEVFREQ_H__ +#define __LINUX_DEVFREQ_H__ + +#include +#include +#include + +#define DEVFREQ_NAME_LEN 16 + +struct devfreq; + +/** + * struct devfreq_dev_status - Data given from devfreq user device to + * governors. Represents the performance + * statistics. + * @total_time The total time represented by this instance of + * devfreq_dev_status + * @busy_time The time that the device was working among the + * total_time. + * @current_frequency The operating frequency. + * @private_data An entry not specified by the devfreq framework. + * A device and a specific governor may have their + * own protocol with private_data. However, because + * this is governor-specific, a governor using this + * will be only compatible with devices aware of it. + */ +struct devfreq_dev_status { + /* both since the last measure */ + unsigned long total_time; + unsigned long busy_time; + unsigned long current_frequency; + void *private_date; +}; + +/** + * struct devfreq_dev_profile - Devfreq's user device profile + * @initial_freq The operating frequency when devfreq_add_device() is + * called. + * @polling_ms The polling interval in ms. 0 disables polling. + * @target The device should set its operating frequency at + * freq or lowest-upper-than-freq value. If freq is + * higher than any operable frequency, set maximum. + * Before returning, target function should set + * freq at the current frequency. + * @get_dev_status The device should provide the current performance + * status to devfreq, which is used by governors. + * @exit An optional callback that is called when devfreq + * is removing the devfreq object due to error or + * from devfreq_remove_device() call. If the user + * has registered devfreq->nb at a notifier-head, + * this is the time to unregister it. + */ +struct devfreq_dev_profile { + unsigned long initial_freq; + unsigned int polling_ms; + + int (*target)(struct device *dev, unsigned long *freq); + int (*get_dev_status)(struct device *dev, + struct devfreq_dev_status *stat); + void (*exit)(struct device *dev); +}; + +/** + * struct devfreq_governor - Devfreq policy governor + * @name Governor's name + * @get_target_freq Returns desired operating frequency for the device. + * Basically, get_target_freq will run + * devfreq_dev_profile.get_dev_status() to get the + * status of the device (load = busy_time / total_time). + * If no_central_polling is set, this callback is called + * only with update_devfreq() notified by OPP. + * @init Called when the devfreq is being attached to a device + * @exit Called when the devfreq is being removed from a + * device. Governor should stop any internal routines + * before return because related data may be + * freed after exit(). + * @no_central_polling Do not use devfreq's central polling mechanism. + * When this is set, devfreq will not call + * get_target_freq with devfreq_monitor(). However, + * devfreq will call get_target_freq with + * devfreq_update() notified by OPP framework. + * + * Note that the callbacks are called with devfreq->lock locked by devfreq. + */ +struct devfreq_governor { + const char name[DEVFREQ_NAME_LEN]; + int (*get_target_freq)(struct devfreq *this, unsigned long *freq); + int (*init)(struct devfreq *this); + void (*exit)(struct devfreq *this); + const bool no_central_polling; +}; + +/** + * struct devfreq - Device devfreq structure + * @node list node - contains the devices with devfreq that have been + * registered. + * @lock a mutex to protect accessing devfreq. + * @dev device registered by devfreq class. dev.parent is the device + * using devfreq. + * @profile device-specific devfreq profile + * @governor method how to choose frequency based on the usage. + * @nb notifier block used to notify devfreq object that it should + * reevaluate operable frequencies. Devfreq users may use + * devfreq.nb to the corresponding register notifier call chain. + * @polling_jiffies interval in jiffies. + * @previous_freq previously configured frequency value. + * @next_polling the number of remaining jiffies to poll with + * "devfreq_monitor" executions to reevaluate + * frequency/voltage of the device. Set by + * profile's polling_ms interval. + * @data Private data of the governor. The devfreq framework does not + * touch this. + * @being_removed a flag to mark that this object is being removed in + * order to prevent trying to remove the object multiple times. + * + * This structure stores the devfreq information for a give device. + * + * Note that when a governor accesses entries in struct devfreq in its + * functions except for the context of callbacks defined in struct + * devfreq_governor, the governor should protect its access with the + * struct mutex lock in struct devfreq. A governor may use this mutex + * to protect its own private data in void *data as well. + */ +struct devfreq { + struct list_head node; + + struct mutex lock; + struct device dev; + struct devfreq_dev_profile *profile; + const struct devfreq_governor *governor; + struct notifier_block nb; + + unsigned long polling_jiffies; + unsigned long previous_freq; + unsigned int next_polling; + + void *data; /* private data for governors */ + + bool being_removed; +}; + +#if defined(CONFIG_PM_DEVFREQ) +extern struct devfreq *devfreq_add_device(struct device *dev, + struct devfreq_dev_profile *profile, + const struct devfreq_governor *governor, + void *data); +extern int devfreq_remove_device(struct devfreq *devfreq); + +/* Helper functions for devfreq user device driver with OPP. */ +extern struct opp *devfreq_recommended_opp(struct device *dev, + unsigned long *freq); +extern int devfreq_register_opp_notifier(struct device *dev, + struct devfreq *devfreq); +extern int devfreq_unregister_opp_notifier(struct device *dev, + struct devfreq *devfreq); + +#else /* !CONFIG_PM_DEVFREQ */ +static struct devfreq *devfreq_add_device(struct device *dev, + struct devfreq_dev_profile *profile, + struct devfreq_governor *governor, + void *data); +{ + return NULL; +} + +static int devfreq_remove_device(struct devfreq *devfreq); +{ + return 0; +} + +static struct opp *devfreq_recommended_opp(struct device *dev, + unsigned long *freq) +{ + return -EINVAL; +} + +static int devfreq_register_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ + return -EINVAL; +} + +static int devfreq_unregister_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ + return -EINVAL; +} + +#endif /* CONFIG_PM_DEVFREQ */ + +#endif /* __LINUX_DEVFREQ_H__ */ -- cgit v1.2.2 From ce26c5bb9569d8b826f01b8620fc16d8da6821e9 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Sun, 2 Oct 2011 00:19:34 +0200 Subject: PM / devfreq: Add basic governors Four cpufreq-like governors are provided as examples. powersave: use the lowest frequency possible. The user (device) should set the polling_ms as 0 because polling is useless for this governor. performance: use the highest freqeuncy possible. The user (device) should set the polling_ms as 0 because polling is useless for this governor. userspace: use the user specified frequency stored at devfreq.user_set_freq. With sysfs support in the following patch, a user may set the value with the sysfs interface. simple_ondemand: simplified version of cpufreq's ondemand governor. When a user updates OPP entries (enable/disable/add), OPP framework automatically notifies devfreq to update operating frequency accordingly. Thus, devfreq users (device drivers) do not need to update devfreq manually with OPP entry updates or set polling_ms for powersave , performance, userspace, or any other "static" governors. Note that these are given only as basic examples for governors and any devices with devfreq may implement their own governors with the drivers and use them. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Reviewed-by: Mike Turquette Acked-by: Kevin Hilman Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index b3be3d3cbaa7..afb94583960c 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -166,6 +166,36 @@ extern int devfreq_register_opp_notifier(struct device *dev, extern int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq); +#ifdef CONFIG_DEVFREQ_GOV_POWERSAVE +extern const struct devfreq_governor devfreq_powersave; +#endif +#ifdef CONFIG_DEVFREQ_GOV_PERFORMANCE +extern const struct devfreq_governor devfreq_performance; +#endif +#ifdef CONFIG_DEVFREQ_GOV_USERSPACE +extern const struct devfreq_governor devfreq_userspace; +#endif +#ifdef CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND +extern const struct devfreq_governor devfreq_simple_ondemand; +/** + * struct devfreq_simple_ondemand_data - void *data fed to struct devfreq + * and devfreq_add_device + * @ upthreshold If the load is over this value, the frequency jumps. + * Specify 0 to use the default. Valid value = 0 to 100. + * @ downdifferential If the load is under upthreshold - downdifferential, + * the governor may consider slowing the frequency down. + * Specify 0 to use the default. Valid value = 0 to 100. + * downdifferential < upthreshold must hold. + * + * If the fed devfreq_simple_ondemand_data pointer is NULL to the governor, + * the governor uses the default values. + */ +struct devfreq_simple_ondemand_data { + unsigned int upthreshold; + unsigned int downdifferential; +}; +#endif + #else /* !CONFIG_PM_DEVFREQ */ static struct devfreq *devfreq_add_device(struct device *dev, struct devfreq_dev_profile *profile, @@ -198,6 +228,11 @@ static int devfreq_unregister_opp_notifier(struct device *dev, return -EINVAL; } +#define devfreq_powersave NULL +#define devfreq_performance NULL +#define devfreq_userspace NULL +#define devfreq_simple_ondemand NULL + #endif /* CONFIG_PM_DEVFREQ */ #endif /* __LINUX_DEVFREQ_H__ */ -- cgit v1.2.2 From f6e67035a9edd79b8b202c159d5bec560bb9c358 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 20 Sep 2011 15:10:33 -0700 Subject: [SCSI] libsas,libata: fix ->change_queue_{depth|type} for sata devices Pass queue_depth change requests to libata, and prevent queue_type changes for ATA devices. Otherwise: 1/ we do not honor the libata specific restrictions on the queue depth 2/ libsas drivers that do not set sdev->tagged_supported are unable to change the queue_depth of ata devices via sysfs Signed-off-by: Dan Williams Acked-by: Jeff Garzik Signed-off-by: James Bottomley --- include/linux/libata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index efd6f9800762..23fa829bf7a3 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1052,6 +1052,8 @@ extern int ata_scsi_slave_config(struct scsi_device *sdev); extern void ata_scsi_slave_destroy(struct scsi_device *sdev); extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, int reason); +extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, + int queue_depth, int reason); extern struct ata_device *ata_dev_pair(struct ata_device *adev); extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); -- cgit v1.2.2 From b1e3be0647fec81887e55edbda0c56c0445f7b53 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 3 Oct 2011 09:30:20 +0200 Subject: clocksource: fixup ux500 build problems Based on a patch from Arnd Bergmann this fixes up the build problem of assigning a non-existing global when the ux500 PRCMU timer is not linked in by passing its base address to the init function. We also add a missing inclusion and staticize the dummy function. Cc: Arnd Bergmann Signed-off-by: Linus Walleij --- include/linux/clksrc-dbx500-prcmu.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clksrc-dbx500-prcmu.h b/include/linux/clksrc-dbx500-prcmu.h index d1e95042408b..4fb8119c49e4 100644 --- a/include/linux/clksrc-dbx500-prcmu.h +++ b/include/linux/clksrc-dbx500-prcmu.h @@ -11,12 +11,10 @@ #include #include -extern void __iomem *clksrc_dbx500_timer_base; - #ifdef CONFIG_CLKSRC_DBX500_PRCMU -void __init clksrc_dbx500_prcmu_init(void); +void __init clksrc_dbx500_prcmu_init(void __iomem *base); #else -void __init clksrc_dbx500_prcmu_init(void) {} +static inline void __init clksrc_dbx500_prcmu_init(void __iomem *base) {} #endif #endif -- cgit v1.2.2 From c8e28ce049faa53a470c132893abbc9f2bde9420 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Sun, 23 Jan 2011 10:07:47 -0600 Subject: writeback: account per-bdi accumulated dirtied pages Introduce the BDI_DIRTIED counter. It will be used for estimating the bdi's dirty bandwidth. CC: Jan Kara CC: Michael Rubin CC: Peter Zijlstra Signed-off-by: Wu Fengguang --- include/linux/backing-dev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 3b2f9cb82986..9ca241a70c49 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int); enum bdi_stat_item { BDI_RECLAIMABLE, BDI_WRITEBACK, + BDI_DIRTIED, BDI_WRITTEN, NR_BDI_STAT_ITEMS }; -- cgit v1.2.2 From af6a311384bce6c88e15c80ab22ab051a918b4eb Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Mon, 3 Oct 2011 20:46:17 -0600 Subject: writeback: add bg_threshold parameter to __bdi_update_bandwidth() No behavior change. Signed-off-by: Wu Fengguang --- include/linux/writeback.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 2b8963ff0f35..ddb4652cb337 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -143,6 +143,7 @@ unsigned long bdi_dirty_limit(struct backing_dev_info *bdi, void __bdi_update_bandwidth(struct backing_dev_info *bdi, unsigned long thresh, + unsigned long bg_thresh, unsigned long dirty, unsigned long bdi_thresh, unsigned long bdi_dirty, -- cgit v1.2.2 From be3ffa276446e1b691a2bf84e7621e5a6fb49db9 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Sun, 12 Jun 2011 10:51:31 -0600 Subject: writeback: dirty rate control It's all about bdi->dirty_ratelimit, which aims to be (write_bw / N) when there are N dd tasks. On write() syscall, use bdi->dirty_ratelimit ============================================ balance_dirty_pages(pages_dirtied) { task_ratelimit = bdi->dirty_ratelimit * bdi_position_ratio(); pause = pages_dirtied / task_ratelimit; sleep(pause); } On every 200ms, update bdi->dirty_ratelimit =========================================== bdi_update_dirty_ratelimit() { task_ratelimit = bdi->dirty_ratelimit * bdi_position_ratio(); balanced_dirty_ratelimit = task_ratelimit * write_bw / dirty_rate; bdi->dirty_ratelimit = balanced_dirty_ratelimit } Estimation of balanced bdi->dirty_ratelimit =========================================== balanced task_ratelimit ----------------------- balance_dirty_pages() needs to throttle tasks dirtying pages such that the total amount of dirty pages stays below the specified dirty limit in order to avoid memory deadlocks. Furthermore we desire fairness in that tasks get throttled proportionally to the amount of pages they dirty. IOW we want to throttle tasks such that we match the dirty rate to the writeout bandwidth, this yields a stable amount of dirty pages: dirty_rate == write_bw (1) The fairness requirement gives us: task_ratelimit = balanced_dirty_ratelimit == write_bw / N (2) where N is the number of dd tasks. We don't know N beforehand, but still can estimate balanced_dirty_ratelimit within 200ms. Start by throttling each dd task at rate task_ratelimit = task_ratelimit_0 (3) (any non-zero initial value is OK) After 200ms, we measured dirty_rate = # of pages dirtied by all dd's / 200ms write_bw = # of pages written to the disk / 200ms For the aggressive dd dirtiers, the equality holds dirty_rate == N * task_rate == N * task_ratelimit_0 (4) Or task_ratelimit_0 == dirty_rate / N (5) Now we conclude that the balanced task ratelimit can be estimated by write_bw balanced_dirty_ratelimit = task_ratelimit_0 * ---------- (6) dirty_rate Because with (4) and (5) we can get the desired equality (1): write_bw balanced_dirty_ratelimit == (dirty_rate / N) * ---------- dirty_rate == write_bw / N Then using the balanced task ratelimit we can compute task pause times like: task_pause = task->nr_dirtied / task_ratelimit task_ratelimit with position control ------------------------------------ However, while the above gives us means of matching the dirty rate to the writeout bandwidth, it at best provides us with a stable dirty page count (assuming a static system). In order to control the dirty page count such that it is high enough to provide performance, but does not exceed the specified limit we need another control. The dirty position control works by extending (2) to task_ratelimit = balanced_dirty_ratelimit * pos_ratio (7) where pos_ratio is a negative feedback function that subjects to 1) f(setpoint) = 1.0 2) df/dx < 0 That is, if the dirty pages are ABOVE the setpoint, we throttle each task a bit more HEAVY than balanced_dirty_ratelimit, so that the dirty pages are created less fast than they are cleaned, thus DROP to the setpoints (and the reverse). Based on (7) and the assumption that both dirty_ratelimit and pos_ratio remains CONSTANT for the past 200ms, we get task_ratelimit_0 = balanced_dirty_ratelimit * pos_ratio (8) Putting (8) into (6), we get the formula used in bdi_update_dirty_ratelimit(): write_bw balanced_dirty_ratelimit *= pos_ratio * ---------- (9) dirty_rate Signed-off-by: Wu Fengguang --- include/linux/backing-dev.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 9ca241a70c49..dff0ff78e878 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -75,10 +75,17 @@ struct backing_dev_info { struct percpu_counter bdi_stat[NR_BDI_STAT_ITEMS]; unsigned long bw_time_stamp; /* last time write bw is updated */ + unsigned long dirtied_stamp; unsigned long written_stamp; /* pages written at bw_time_stamp */ unsigned long write_bandwidth; /* the estimated write bandwidth */ unsigned long avg_write_bandwidth; /* further smoothed write bw */ + /* + * The base dirty throttle rate, re-calculated on every 200ms. + * All the bdi tasks' dirty rate will be curbed under it. + */ + unsigned long dirty_ratelimit; + struct prop_local_percpu completions; int dirty_exceeded; -- cgit v1.2.2 From 7381131cbcf7e15d201a0ffd782a4698efe4e740 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Fri, 26 Aug 2011 15:53:24 -0600 Subject: writeback: stabilize bdi->dirty_ratelimit There are some imperfections in balanced_dirty_ratelimit. 1) large fluctuations The dirty_rate used for computing balanced_dirty_ratelimit is merely averaged in the past 200ms (very small comparing to the 3s estimation period for write_bw), which makes rather dispersed distribution of balanced_dirty_ratelimit. It's pretty hard to average out the singular points by increasing the estimation period. Considering that the averaging technique will introduce very undesirable time lags, I give it up totally. (btw, the 3s write_bw averaging time lag is much more acceptable because its impact is one-way and therefore won't lead to oscillations.) The more practical way is filtering -- most singular balanced_dirty_ratelimit points can be filtered out by remembering some prev_balanced_rate and prev_prev_balanced_rate. However the more reliable way is to guard balanced_dirty_ratelimit with task_ratelimit. 2) due to truncates and fs redirties, the (write_bw <=> dirty_rate) match could become unbalanced, which may lead to large systematical errors in balanced_dirty_ratelimit. The truncates, due to its possibly bumpy nature, can hardly be compensated smoothly. So let's face it. When some over-estimated balanced_dirty_ratelimit brings dirty_ratelimit high, dirty pages will go higher than the setpoint. task_ratelimit will in turn become lower than dirty_ratelimit. So if we consider both balanced_dirty_ratelimit and task_ratelimit and update dirty_ratelimit only when they are on the same side of dirty_ratelimit, the systematical errors in balanced_dirty_ratelimit won't be able to bring dirty_ratelimit far away. The balanced_dirty_ratelimit estimation may also be inaccurate near @limit or @freerun, however is less an issue. 3) since we ultimately want to - keep the fluctuations of task ratelimit as small as possible - keep the dirty pages around the setpoint as long time as possible the update policy used for (2) also serves the above goals nicely: if for some reason the dirty pages are high (task_ratelimit < dirty_ratelimit), and dirty_ratelimit is low (dirty_ratelimit < balanced_dirty_ratelimit), there is no point to bring up dirty_ratelimit in a hurry only to hurt both the above two goals. So, we make use of task_ratelimit to limit the update of dirty_ratelimit in two ways: 1) avoid changing dirty rate when it's against the position control target (the adjusted rate will slow down the progress of dirty pages going back to setpoint). 2) limit the step size. task_ratelimit is changing values step by step, leaving a consistent trace comparing to the randomly jumping balanced_dirty_ratelimit. task_ratelimit also has the nice smaller errors in stable state and typically larger errors when there are big errors in rate. So it's a pretty good limiting factor for the step size of dirty_ratelimit. Note that bdi->dirty_ratelimit is always tracking balanced_dirty_ratelimit. task_ratelimit is merely used as a limiting factor. Signed-off-by: Wu Fengguang --- include/linux/backing-dev.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index dff0ff78e878..c3b92010d894 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -83,8 +83,11 @@ struct backing_dev_info { /* * The base dirty throttle rate, re-calculated on every 200ms. * All the bdi tasks' dirty rate will be curbed under it. + * @dirty_ratelimit tracks the estimated @balanced_dirty_ratelimit + * in small steps and is much more smooth/stable than the latter. */ unsigned long dirty_ratelimit; + unsigned long balanced_dirty_ratelimit; struct prop_local_percpu completions; int dirty_exceeded; -- cgit v1.2.2 From 9d823e8f6b1b7b39f952d7d1795f29162143a433 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Sat, 11 Jun 2011 18:10:12 -0600 Subject: writeback: per task dirty rate limit Add two fields to task_struct. 1) account dirtied pages in the individual tasks, for accuracy 2) per-task balance_dirty_pages() call intervals, for flexibility The balance_dirty_pages() call interval (ie. nr_dirtied_pause) will scale near-sqrt to the safety gap between dirty pages and threshold. The main problem of per-task nr_dirtied is, if 1k+ tasks start dirtying pages at exactly the same time, each task will be assigned a large initial nr_dirtied_pause, so that the dirty threshold will be exceeded long before each task reached its nr_dirtied_pause and hence call balance_dirty_pages(). The solution is to watch for the number of pages dirtied on each CPU in between the calls into balance_dirty_pages(). If it exceeds ratelimit_pages (3% dirty threshold), force call balance_dirty_pages() for a chance to set bdi->dirty_exceeded. In normal situations, this safeguarding condition is not expected to trigger at all. On the sqrt in dirty_poll_interval(): It will serve as an initial guess when dirty pages are still in the freerun area. When dirty pages are floating inside the dirty control scope [freerun, limit], a followup patch will use some refined dirty poll interval to get the desired pause time. thresh-dirty (MB) sqrt 1 16 2 22 4 32 8 45 16 64 32 90 64 128 128 181 256 256 512 362 1024 512 The above table means, given 1MB (or 1GB) gap and the dd tasks polling balance_dirty_pages() on every 16 (or 512) pages, the dirty limit won't be exceeded as long as there are less than 16 (or 512) concurrent dd's. So sqrt naturally leads to less overheads and more safe concurrent tasks for large memory servers, which have large (thresh-freerun) gaps. peter: keep the per-CPU ratelimit for safeguarding the 1k+ tasks case CC: Peter Zijlstra Reviewed-by: Andrea Righi Signed-off-by: Wu Fengguang --- include/linux/sched.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 41d0237fd449..a4a5582dc618 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1525,6 +1525,13 @@ struct task_struct { int make_it_fail; #endif struct prop_local_single dirties; + /* + * when (nr_dirtied >= nr_dirtied_pause), it's time to call + * balance_dirty_pages() for some dirty throttling pause + */ + int nr_dirtied; + int nr_dirtied_pause; + #ifdef CONFIG_LATENCYTOP int latency_record_count; struct latency_record latency_record[LT_SAVECOUNT]; -- cgit v1.2.2 From 31d9d9b6d83030f748d013e61502fa5477e2ac0e Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 23 Sep 2011 17:03:06 +0100 Subject: genirq: Add support for per-cpu dev_id interrupts The ARM GIC interrupt controller offers per CPU interrupts (PPIs), which are usually used to connect local timers to each core. Each CPU has its own private interface to the GIC, and only sees the PPIs that are directly connect to it. While these timers are separate devices and have a separate interrupt line to a core, they all use the same IRQ number. For these devices, request_irq() is not the right API as it assumes that an IRQ number is visible by a number of CPUs (through the affinity setting), but makes it very awkward to express that an IRQ number can be handled by all CPUs, and yet be a different interrupt line on each CPU, requiring a different dev_id cookie to be passed back to the handler. The *_percpu_irq() functions is designed to overcome these limitations, by providing a per-cpu dev_id vector: int request_percpu_irq(unsigned int irq, irq_handler_t handler, const char *devname, void __percpu *percpu_dev_id); void free_percpu_irq(unsigned int, void __percpu *); int setup_percpu_irq(unsigned int irq, struct irqaction *new); void remove_percpu_irq(unsigned int irq, struct irqaction *act); void enable_percpu_irq(unsigned int irq); void disable_percpu_irq(unsigned int irq); The API has a number of limitations: - no interrupt sharing - no threading - common handler across all the CPUs Once the interrupt is requested using setup_percpu_irq() or request_percpu_irq(), it must be enabled by each core that wishes its local interrupt to be delivered. Based on an initial patch by Thomas Gleixner. Signed-off-by: Marc Zyngier Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1316793788-14500-2-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 38 +++++++++++++++++++++++++++----------- include/linux/irq.h | 16 +++++++++++++++- include/linux/irqdesc.h | 1 + 3 files changed, 43 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index a103732b7588..1cdfd09c8abc 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -95,6 +95,7 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); * @flags: flags (see IRQF_* above) * @name: name of the device * @dev_id: cookie to identify the device + * @percpu_dev_id: cookie to identify the device * @next: pointer to the next irqaction for shared interrupts * @irq: interrupt number * @dir: pointer to the proc/irq/NN/name entry @@ -104,17 +105,18 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); * @thread_mask: bitmask for keeping track of @thread activity */ struct irqaction { - irq_handler_t handler; - unsigned long flags; - void *dev_id; - struct irqaction *next; - int irq; - irq_handler_t thread_fn; - struct task_struct *thread; - unsigned long thread_flags; - unsigned long thread_mask; - const char *name; - struct proc_dir_entry *dir; + irq_handler_t handler; + unsigned long flags; + void *dev_id; + void __percpu *percpu_dev_id; + struct irqaction *next; + int irq; + irq_handler_t thread_fn; + struct task_struct *thread; + unsigned long thread_flags; + unsigned long thread_mask; + const char *name; + struct proc_dir_entry *dir; } ____cacheline_internodealigned_in_smp; extern irqreturn_t no_action(int cpl, void *dev_id); @@ -136,6 +138,10 @@ extern int __must_check request_any_context_irq(unsigned int irq, irq_handler_t handler, unsigned long flags, const char *name, void *dev_id); +extern int __must_check +request_percpu_irq(unsigned int irq, irq_handler_t handler, + const char *devname, void __percpu *percpu_dev_id); + extern void exit_irq_thread(void); #else @@ -164,10 +170,18 @@ request_any_context_irq(unsigned int irq, irq_handler_t handler, return request_irq(irq, handler, flags, name, dev_id); } +static inline int __must_check +request_percpu_irq(unsigned int irq, irq_handler_t handler, + const char *devname, void __percpu *percpu_dev_id) +{ + return request_irq(irq, handler, 0, devname, percpu_dev_id); +} + static inline void exit_irq_thread(void) { } #endif extern void free_irq(unsigned int, void *); +extern void free_percpu_irq(unsigned int, void __percpu *); struct device; @@ -207,7 +221,9 @@ extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id); extern void disable_irq_nosync(unsigned int irq); extern void disable_irq(unsigned int irq); +extern void disable_percpu_irq(unsigned int irq); extern void enable_irq(unsigned int irq); +extern void enable_percpu_irq(unsigned int irq); /* The following three functions are for the core kernel use only. */ #ifdef CONFIG_GENERIC_HARDIRQS diff --git a/include/linux/irq.h b/include/linux/irq.h index 73e31abeba1c..59e49c80cc2c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -66,6 +66,7 @@ typedef void (*irq_preflow_handler_t)(struct irq_data *data); * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set) * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context * IRQ_NESTED_TRHEAD - Interrupt nests into another thread + * IRQ_PER_CPU_DEVID - Dev_id is a per-cpu variable */ enum { IRQ_TYPE_NONE = 0x00000000, @@ -88,12 +89,13 @@ enum { IRQ_MOVE_PCNTXT = (1 << 14), IRQ_NESTED_THREAD = (1 << 15), IRQ_NOTHREAD = (1 << 16), + IRQ_PER_CPU_DEVID = (1 << 17), }; #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ - IRQ_PER_CPU | IRQ_NESTED_THREAD) + IRQ_PER_CPU | IRQ_NESTED_THREAD | IRQ_NOTHREAD | IRQ_PER_CPU_DEVID) #define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) @@ -367,6 +369,8 @@ enum { struct irqaction; extern int setup_irq(unsigned int irq, struct irqaction *new); extern void remove_irq(unsigned int irq, struct irqaction *act); +extern int setup_percpu_irq(unsigned int irq, struct irqaction *new); +extern void remove_percpu_irq(unsigned int irq, struct irqaction *act); extern void irq_cpu_online(void); extern void irq_cpu_offline(void); @@ -394,6 +398,7 @@ extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc); extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc); extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc); extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc); +extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); extern void handle_nested_irq(unsigned int irq); @@ -422,6 +427,8 @@ static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *c irq_set_chip_and_handler_name(irq, chip, handle, NULL); } +extern int irq_set_percpu_devid(unsigned int irq); + extern void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name); @@ -483,6 +490,13 @@ static inline void irq_set_nested_thread(unsigned int irq, bool nest) irq_clear_status_flags(irq, IRQ_NESTED_THREAD); } +static inline void irq_set_percpu_devid_flags(unsigned int irq) +{ + irq_set_status_flags(irq, + IRQ_NOAUTOEN | IRQ_PER_CPU | IRQ_NOTHREAD | + IRQ_NOPROBE | IRQ_PER_CPU_DEVID); +} + /* Handle dynamic irq creation and destruction */ extern unsigned int create_irq_nr(unsigned int irq_want, int node); extern int create_irq(void); diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 150134ac709a..6b69c2c9dff1 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -53,6 +53,7 @@ struct irq_desc { unsigned long last_unhandled; /* Aging timer for unhandled count */ unsigned int irqs_unhandled; raw_spinlock_t lock; + struct cpumask *percpu_enabled; #ifdef CONFIG_SMP const struct cpumask *affinity_hint; struct irq_affinity_notify *affinity_notify; -- cgit v1.2.2 From 1e7c5fd29487ee88cb3abac945bafa60ae026146 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 30 Sep 2011 10:48:47 +0100 Subject: genirq: percpu: allow interrupt type to be set at enable time As request_percpu_irq() doesn't allow for a percpu interrupt to have its type configured (it is generally impossible to configure it on all CPUs at once), add a 'type' argument to enable_percpu_irq(). This allows some low-level, board specific init code to be switched to a generic API. [ tglx: Added WARN_ON argument ] Signed-off-by: Marc Zyngier Cc: Abhijeet Dharmapurikar Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 1cdfd09c8abc..664544ff77d5 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -223,7 +223,7 @@ extern void disable_irq_nosync(unsigned int irq); extern void disable_irq(unsigned int irq); extern void disable_percpu_irq(unsigned int irq); extern void enable_irq(unsigned int irq); -extern void enable_percpu_irq(unsigned int irq); +extern void enable_percpu_irq(unsigned int irq, unsigned int type); /* The following three functions are for the core kernel use only. */ #ifdef CONFIG_GENERIC_HARDIRQS -- cgit v1.2.2 From b5c5693bb723a019deac3cd1345f3e7233c8a67e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 3 Oct 2011 14:01:21 -0400 Subject: tcp: report ECN_SEEN in tcp_info Allows ss command (iproute2) to display "ecnseen" if at least one packet with ECT(0) or ECT(1) or ECN was received by this socket. "ecn" means ECN was negotiated at session establishment (TCP level) "ecnseen" means we received at least one packet with ECT fields set (IP level) ss -i ... ESTAB 0 0 192.168.20.110:22 192.168.20.144:38016 ino:5950 sk:f178e400 mem:(r0,w0,f0,t0) ts sack ecn ecnseen bic wscale:7,8 rto:210 rtt:12.5/7.5 cwnd:10 send 9.3Mbps rcv_space:14480 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/tcp.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 6b63b310af36..7f59ee946983 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -111,7 +111,8 @@ enum { #define TCPI_OPT_TIMESTAMPS 1 #define TCPI_OPT_SACK 2 #define TCPI_OPT_WSCALE 4 -#define TCPI_OPT_ECN 8 +#define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */ +#define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */ enum tcp_ca_state { TCP_CA_Open = 0, -- cgit v1.2.2 From 96c131842aab45b5d139d0bcb417796819f5ee92 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ji=C5=99=C3=AD=20=C5=BDupka?= Date: Fri, 30 Sep 2011 02:09:54 +0000 Subject: Repair wrong named definition aligned_u64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This repairs problem with compile library in userspace (libnl). Signed-off-by: Jiří Župka Signed-off-by: David S. Miller --- include/linux/if_packet.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index 5e76988f8ffc..f3799295d231 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -173,7 +173,7 @@ struct tpacket_hdr_v1 { * you can see which blk[s] is[are] outstanding etc. * 3. Validate kernel code. */ - aligned_u64 seq_num; + __aligned_u64 seq_num; /* * ts_last_pkt: -- cgit v1.2.2 From 349d2895cc8b7db1f5be677cd685209a3805d2ed Mon Sep 17 00:00:00 2001 From: Vasily Averin Date: Fri, 30 Sep 2011 01:11:10 +0000 Subject: ipv4: NET_IPV4_ROUTE_GC_INTERVAL removal removing obsoleted sysctl, ip_rt_gc_interval variable no longer used since 2.6.38 Signed-off-by: Vasily Averin Signed-off-by: David S. Miller --- include/linux/sysctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 11684d9e6bd2..9a1ec10fd504 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -435,7 +435,7 @@ enum { NET_IPV4_ROUTE_MAX_SIZE=5, NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, NET_IPV4_ROUTE_GC_TIMEOUT=7, - NET_IPV4_ROUTE_GC_INTERVAL=8, + NET_IPV4_ROUTE_GC_INTERVAL=8, /* obsolete since 2.6.38 */ NET_IPV4_ROUTE_REDIRECT_LOAD=9, NET_IPV4_ROUTE_REDIRECT_NUMBER=10, NET_IPV4_ROUTE_REDIRECT_SILENCE=11, -- cgit v1.2.2 From e209c5a7ed1870ab7f112ad47083b5d616e8b6a4 Mon Sep 17 00:00:00 2001 From: Sangwook Lee Date: Thu, 29 Sep 2011 12:57:17 +0100 Subject: net:rfkill: add a gpio setup function into GPIO rfkill Add a gpio setup function which gives a chance to set up platform specific configuration such as pin multiplexing, input/output direction at the runtime or booting time. Signed-off-by: Sangwook Lee Signed-off-by: John W. Linville --- include/linux/rfkill-gpio.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rfkill-gpio.h b/include/linux/rfkill-gpio.h index a175d0598033..4d09f6eab359 100644 --- a/include/linux/rfkill-gpio.h +++ b/include/linux/rfkill-gpio.h @@ -30,6 +30,8 @@ * @reset_gpio: GPIO which is used for reseting rfkill switch * @shutdown_gpio: GPIO which is used for shutdown of rfkill switch * @power_clk_name: [optional] name of clk to turn off while blocked + * @gpio_runtime_close: clean up platform specific gpio configuration + * @gpio_runtime_setup: set up platform specific gpio configuration */ struct rfkill_gpio_platform_data { @@ -38,6 +40,8 @@ struct rfkill_gpio_platform_data { int shutdown_gpio; const char *power_clk_name; enum rfkill_type type; + void (*gpio_runtime_close)(struct platform_device *); + int (*gpio_runtime_setup)(struct platform_device *); }; #endif /* __RFKILL_GPIO_H */ -- cgit v1.2.2 From 1230db8e1543c0471dd165727d34647ab098cc1e Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Thu, 8 Sep 2011 14:00:42 +0800 Subject: llist: Make some llist functions inline Because llist code will be used in performance critical scheduler code path, make llist_add() and llist_del_all() inline to avoid function calling overhead and related 'glue' overhead. Signed-off-by: Huang Ying Acked-by: Mathieu Desnoyers Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1315461646-1379-2-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar --- include/linux/llist.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 58 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index aa0c8b5b3cd0..3eccdfd66096 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -37,8 +37,28 @@ * architectures that don't have NMI-safe cmpxchg implementation, the * list can NOT be used in NMI handler. So code uses the list in NMI * handler should depend on CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG. + * + * Copyright 2010,2011 Intel Corp. + * Author: Huang Ying + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation; + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include +#include +#include + struct llist_head { struct llist_node *first; }; @@ -113,14 +133,46 @@ static inline void init_llist_head(struct llist_head *list) * test whether the list is empty without deleting something from the * list. */ -static inline int llist_empty(const struct llist_head *head) +static inline bool llist_empty(const struct llist_head *head) { return ACCESS_ONCE(head->first) == NULL; } -void llist_add(struct llist_node *new, struct llist_head *head); -void llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, - struct llist_head *head); -struct llist_node *llist_del_first(struct llist_head *head); -struct llist_node *llist_del_all(struct llist_head *head); +/** + * llist_add - add a new entry + * @new: new entry to be added + * @head: the head for your lock-less list + */ +static inline void llist_add(struct llist_node *new, struct llist_head *head) +{ + struct llist_node *entry, *old_entry; + +#ifndef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG + BUG_ON(in_nmi()); +#endif + + entry = head->first; + do { + old_entry = entry; + new->next = entry; + cpu_relax(); + } while ((entry = cmpxchg(&head->first, old_entry, new)) != old_entry); +} + +/** + * llist_del_all - delete all entries from lock-less list + * @head: the head of lock-less list to delete all entries + * + * If list is empty, return NULL, otherwise, delete all entries and + * return the pointer to the first entry. The order of entries + * deleted is from the newest to the oldest added one. + */ +static inline struct llist_node *llist_del_all(struct llist_head *head) +{ +#ifndef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG + BUG_ON(in_nmi()); +#endif + + return xchg(&head->first, NULL); +} #endif /* LLIST_H */ -- cgit v1.2.2 From 2c30245c65e8ebc3080b75ce65572ab8140bad0b Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Tue, 4 Oct 2011 12:43:11 +0200 Subject: llist: Remove the platform-dependent NMI checks Remove the nmi() checks spread around the code. in_nmi() is not available on every architecture and it's a pretty obscure and ugly check in any case. Cc: Huang Ying Cc: Mathieu Desnoyers Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1315461646-1379-3-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar --- include/linux/llist.h | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index 3eccdfd66096..65fca1cbf514 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -35,8 +35,8 @@ * * The basic atomic operation of this list is cmpxchg on long. On * architectures that don't have NMI-safe cmpxchg implementation, the - * list can NOT be used in NMI handler. So code uses the list in NMI - * handler should depend on CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG. + * list can NOT be used in NMI handlers. So code that uses the list in + * an NMI handler should depend on CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG. * * Copyright 2010,2011 Intel Corp. * Author: Huang Ying @@ -147,10 +147,6 @@ static inline void llist_add(struct llist_node *new, struct llist_head *head) { struct llist_node *entry, *old_entry; -#ifndef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG - BUG_ON(in_nmi()); -#endif - entry = head->first; do { old_entry = entry; @@ -169,10 +165,6 @@ static inline void llist_add(struct llist_node *new, struct llist_head *head) */ static inline struct llist_node *llist_del_all(struct llist_head *head) { -#ifndef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG - BUG_ON(in_nmi()); -#endif - return xchg(&head->first, NULL); } #endif /* LLIST_H */ -- cgit v1.2.2 From a3127336b71f6833d1483c856dce91fe558dc3a9 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Thu, 8 Sep 2011 14:00:44 +0800 Subject: llist: Move cpu_relax() to after the cmpxchg() If in llist_add()/etc. functions the first cmpxchg() call succeeds, it is not necessary to use cpu_relax() before the cmpxchg(). So cpu_relax() in a busy loop involving cmpxchg() should go after cmpxchg() instead of before that. This patch fixes this for all involved llist functions. Signed-off-by: Huang Ying Acked-by: Mathieu Desnoyers Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1315461646-1379-4-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar --- include/linux/llist.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index 65fca1cbf514..ca91875286bf 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -148,11 +148,14 @@ static inline void llist_add(struct llist_node *new, struct llist_head *head) struct llist_node *entry, *old_entry; entry = head->first; - do { + for (;;) { old_entry = entry; new->next = entry; + entry = cmpxchg(&head->first, old_entry, new); + if (entry == old_entry) + break; cpu_relax(); - } while ((entry = cmpxchg(&head->first, old_entry, new)) != old_entry); + } } /** -- cgit v1.2.2 From 781f7fd916fc77a862e20063ed3aeedf173234f9 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Thu, 8 Sep 2011 14:00:45 +0800 Subject: llist: Return whether list is empty before adding in llist_add() Extend the llist_add*() functions to return a success indicator, this allows us in the scheduler code to send an IPI if the queue was empty. ( There's no effect on existing users, because the list_add_xxx() functions are inline, thus this will be optimized out by the compiler if not used by callers. ) Signed-off-by: Huang Ying Cc: Mathieu Desnoyers Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1315461646-1379-5-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar --- include/linux/llist.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index ca91875286bf..27bbdf5ddf82 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -142,8 +142,10 @@ static inline bool llist_empty(const struct llist_head *head) * llist_add - add a new entry * @new: new entry to be added * @head: the head for your lock-less list + * + * Return whether list is empty before adding. */ -static inline void llist_add(struct llist_node *new, struct llist_head *head) +static inline bool llist_add(struct llist_node *new, struct llist_head *head) { struct llist_node *entry, *old_entry; @@ -156,6 +158,8 @@ static inline void llist_add(struct llist_node *new, struct llist_head *head) break; cpu_relax(); } + + return old_entry == NULL; } /** -- cgit v1.2.2 From 38aaf8090d34b623b7919d8c933f6e938c9bf44b Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Thu, 8 Sep 2011 14:00:46 +0800 Subject: irq_work: Use llist in the struct irq_work logic Use llist in irq_work instead of the lock-less linked list implementation in irq_work to avoid the code duplication. Signed-off-by: Huang Ying Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1315461646-1379-6-git-send-email-ying.huang@intel.com Signed-off-by: Ingo Molnar --- include/linux/irq_work.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 4fa09d4d0b71..6a9e8f5399e2 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -1,20 +1,23 @@ #ifndef _LINUX_IRQ_WORK_H #define _LINUX_IRQ_WORK_H +#include + struct irq_work { - struct irq_work *next; + unsigned long flags; + struct llist_node llnode; void (*func)(struct irq_work *); }; static inline -void init_irq_work(struct irq_work *entry, void (*func)(struct irq_work *)) +void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *)) { - entry->next = NULL; - entry->func = func; + work->flags = 0; + work->func = func; } -bool irq_work_queue(struct irq_work *entry); +bool irq_work_queue(struct irq_work *work); void irq_work_run(void); -void irq_work_sync(struct irq_work *entry); +void irq_work_sync(struct irq_work *work); #endif /* _LINUX_IRQ_WORK_H */ -- cgit v1.2.2 From 924f8f5af31423529cc3940cb2ae9fee736b7517 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 12 Sep 2011 13:12:28 +0200 Subject: llist: Add llist_next() So we don't have to expose the struct list_node member. Cc: Huang Ying Cc: Andrew Morton Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1315836348.26517.41.camel@twins Signed-off-by: Ingo Molnar --- include/linux/llist.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index 27bbdf5ddf82..e2e96d04ee48 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -138,6 +138,11 @@ static inline bool llist_empty(const struct llist_head *head) return ACCESS_ONCE(head->first) == NULL; } +static inline struct llist_node *llist_next(struct llist_node *node) +{ + return node->next; +} + /** * llist_add - add a new entry * @new: new entry to be added -- cgit v1.2.2 From fa14ff4accfb24e59d2473f3d864d6648d80563b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 12 Sep 2011 13:06:17 +0200 Subject: sched: Convert to struct llist Use the generic llist primitives. We had a private lockless list implementation in the scheduler in the wake-list code, now that we have a generic llist implementation that provides all required operations, switch to it. This patch is not expected to change any behavior. Signed-off-by: Peter Zijlstra Cc: Huang Ying Cc: Andrew Morton Link: http://lkml.kernel.org/r/1315836353.26517.42.camel@twins Signed-off-by: Ingo Molnar --- include/linux/sched.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 9fda2888a6ab..fc3e8911818a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -90,6 +90,7 @@ struct sched_param { #include #include #include +#include #include @@ -1225,7 +1226,7 @@ struct task_struct { unsigned int ptrace; #ifdef CONFIG_SMP - struct task_struct *wake_entry; + struct llist_node wake_entry; int on_cpu; #endif int on_rq; -- cgit v1.2.2 From f0f1d32f931b705c4ee5dd374074d34edf3eae14 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 12 Sep 2011 15:50:49 +0200 Subject: llist: Remove cpu_relax() usage in cmpxchg loops Initial benchmarks show they're a net loss: $ for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor ; do echo performance > $i; done $ echo 4096 32000 64 128 > /proc/sys/kernel/sem $ ./sembench -t 2048 -w 1900 -o 0 Pre: run time 30 seconds 778936 worker burns per second run time 30 seconds 912190 worker burns per second run time 30 seconds 817506 worker burns per second run time 30 seconds 830870 worker burns per second run time 30 seconds 845056 worker burns per second Post: run time 30 seconds 905920 worker burns per second run time 30 seconds 849046 worker burns per second run time 30 seconds 886286 worker burns per second run time 30 seconds 822320 worker burns per second run time 30 seconds 900283 worker burns per second So about 4% faster. (!) cpu_relax() stalls the pipeline, therefore, when used in a tight loop it has the following benefits: - allows SMT siblings to have a go; - reduces pressure on the CPU interconnect. However, cmpxchg loops are unfair and thus have unbounded completion time, therefore we should avoid getting in such heavily contended situations where the above benefits make any difference. A typical cmpxchg loop should not go round more than a handfull of times at worst, therefore adding extra delays just slows things down. Since the llist primitives are new, there aren't any bad users yet, and we should avoid growing them. Heavily contended sites should generally be better off using the ticket locks for serialization since they provide bounded completion times (fifo-fair over the cpus). Signed-off-by: Peter Zijlstra Cc: Huang Ying Cc: Andrew Morton Link: http://lkml.kernel.org/r/1315836358.26517.43.camel@twins Signed-off-by: Ingo Molnar --- include/linux/llist.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index e2e96d04ee48..837fb4ae66fb 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -161,7 +161,6 @@ static inline bool llist_add(struct llist_node *new, struct llist_head *head) entry = cmpxchg(&head->first, old_entry, new); if (entry == old_entry) break; - cpu_relax(); } return old_entry == NULL; -- cgit v1.2.2 From b1f43bf3a52b085b786adf0b719712df574955f9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 24 May 2011 17:35:40 +0800 Subject: mfd: Add WM1811 support The WM1811 is mostly register compatible with the WM8994 and WM8958, providing a high performance audio hub CODEC in a small form factor suitable for ultra compact system designs. Signed-off-by: Mark Brown Acked-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index f0b69cdae41c..bfb221b3abf7 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -20,6 +20,7 @@ enum wm8994_type { WM8994 = 0, WM8958 = 1, + WM1811 = 2, }; struct regulator_dev; -- cgit v1.2.2 From 81204c84ca46604a04ab3d43ccfa1e464e6b1303 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 24 May 2011 17:35:53 +0800 Subject: ASoC: Add WM1811 support The WM1811 is mostly register compatible with the WM8994 and WM8958, providing a high performance audio hub CODEC in a small form factor suitable for ultra compact system designs. Signed-off-by: Mark Brown --- include/linux/mfd/wm8994/registers.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 83ecdcd8aaf9..fae295048a8b 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -2069,6 +2069,10 @@ /* * R96 (0x60) - Analogue HP (1) */ +#define WM1811_HPOUT1_ATTN 0x0100 /* HPOUT1_ATTN */ +#define WM1811_HPOUT1_ATTN_MASK 0x0100 /* HPOUT1_ATTN */ +#define WM1811_HPOUT1_ATTN_SHIFT 8 /* HPOUT1_ATTN */ +#define WM1811_HPOUT1_ATTN_WIDTH 1 /* HPOUT1_ATTN */ #define WM8994_HPOUT1L_RMV_SHORT 0x0080 /* HPOUT1L_RMV_SHORT */ #define WM8994_HPOUT1L_RMV_SHORT_MASK 0x0080 /* HPOUT1L_RMV_SHORT */ #define WM8994_HPOUT1L_RMV_SHORT_SHIFT 7 /* HPOUT1L_RMV_SHORT */ -- cgit v1.2.2 From 4fcd15a032cec4b2684a32c86e895b50cdbee50c Mon Sep 17 00:00:00 2001 From: Benoit Cousson Date: Tue, 27 Sep 2011 17:45:43 +0200 Subject: of: Add helpers to get one string in multiple strings property Add of_property_read_string_index and of_property_count_strings to retrieve one string inside a property that will contains severals strings. Signed-off-by: Benoit Cousson Acked-by: Grant Likely Signed-off-by: Kevin Hilman --- include/linux/of.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 9180dc5cb00b..5dfe2d5a8b5d 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -203,6 +203,11 @@ extern int of_property_read_u32_array(const struct device_node *np, extern int of_property_read_string(struct device_node *np, const char *propname, const char **out_string); +extern int of_property_read_string_index(struct device_node *np, + const char *propname, + int index, const char **output); +extern int of_property_count_strings(struct device_node *np, + const char *propname); extern int of_device_is_compatible(const struct device_node *device, const char *); extern int of_device_is_available(const struct device_node *device); @@ -256,6 +261,19 @@ static inline int of_property_read_string(struct device_node *np, return -ENOSYS; } +static inline int of_property_read_string_index(struct device_node *np, + const char *propname, int index, + const char **out_string) +{ + return -ENOSYS; +} + +static inline int of_property_count_strings(struct device_node *np, + const char *propname) +{ + return -ENOSYS; +} + static inline const void *of_get_property(const struct device_node *node, const char *name, int *lenp) -- cgit v1.2.2 From 1a9a91525d806f2b3bd8b57b963755a96fd36ce2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 29 Sep 2011 22:29:44 +0200 Subject: PM / QoS: Add function dev_pm_qos_read_value() (v3) To read the current PM QoS value for a given device we need to make sure that the device's power.constraints object won't be removed while we're doing that. For this reason, put the operation under dev->power.lock and acquire the lock around the initialization and removal of power.constraints. Moreover, since we're using the value of power.constraints to determine whether or not the object is present, the power.constraints_state field isn't necessary any more and may be removed. However, dev_pm_qos_add_request() needs to check if the device is being removed from the system before allocating a new PM QoS constraints object for it, so make it use the power.power_state field of struct device for this purpose. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 10 ++-------- include/linux/pm_qos.h | 12 ++++++++++-- 2 files changed, 12 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index d78187e9ca99..62a876ec4d4e 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -326,6 +326,7 @@ extern struct dev_pm_ops generic_subsys_pm_ops; * requested by a driver. */ +#define PM_EVENT_INVALID (-1) #define PM_EVENT_ON 0x0000 #define PM_EVENT_FREEZE 0x0001 #define PM_EVENT_SUSPEND 0x0002 @@ -346,6 +347,7 @@ extern struct dev_pm_ops generic_subsys_pm_ops; #define PM_EVENT_AUTO_SUSPEND (PM_EVENT_AUTO | PM_EVENT_SUSPEND) #define PM_EVENT_AUTO_RESUME (PM_EVENT_AUTO | PM_EVENT_RESUME) +#define PMSG_INVALID ((struct pm_message){ .event = PM_EVENT_INVALID, }) #define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, }) #define PMSG_FREEZE ((struct pm_message){ .event = PM_EVENT_FREEZE, }) #define PMSG_QUIESCE ((struct pm_message){ .event = PM_EVENT_QUIESCE, }) @@ -419,13 +421,6 @@ enum rpm_request { RPM_REQ_RESUME, }; -/* Per-device PM QoS constraints data struct state */ -enum dev_pm_qos_state { - DEV_PM_QOS_NO_DEVICE, /* No device present */ - DEV_PM_QOS_DEVICE_PRESENT, /* Device present, data not allocated */ - DEV_PM_QOS_ALLOCATED, /* Device present, data allocated */ -}; - struct wakeup_source; struct pm_domain_data { @@ -488,7 +483,6 @@ struct dev_pm_info { #endif struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ struct pm_qos_constraints *constraints; - enum dev_pm_qos_state constraints_state; }; extern void update_pm_runtime_accounting(struct device *dev); diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index ca7bd3f98cb4..83b0ea302a80 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -7,6 +7,7 @@ #include #include #include +#include #define PM_QOS_RESERVED 0 #define PM_QOS_CPU_DMA_LATENCY 1 @@ -77,6 +78,7 @@ int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier); int pm_qos_request_active(struct pm_qos_request *req); s32 pm_qos_read_value(struct pm_qos_constraints *c); +s32 dev_pm_qos_read_value(struct device *dev); int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, s32 value); int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); @@ -117,6 +119,8 @@ static inline int pm_qos_request_active(struct pm_qos_request *req) static inline s32 pm_qos_read_value(struct pm_qos_constraints *c) { return 0; } +static inline s32 dev_pm_qos_read_value(struct device *dev) + { return 0; } static inline int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, s32 value) @@ -139,9 +143,13 @@ static inline int dev_pm_qos_remove_global_notifier( struct notifier_block *notifier) { return 0; } static inline void dev_pm_qos_constraints_init(struct device *dev) - { return; } +{ + dev->power.power_state = PMSG_ON; +} static inline void dev_pm_qos_constraints_destroy(struct device *dev) - { return; } +{ + dev->power.power_state = PMSG_INVALID; +} #endif #endif -- cgit v1.2.2 From a1330228f9eec7e355d41f45c17e1297d681f40d Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Mon, 25 Jul 2011 16:34:37 +0100 Subject: dw_apb_timer: constify clocksource name The clocksource name should be const for correctness. Cc: John Stultz Signed-off-by: Jamie Iles Signed-off-by: John Stultz --- include/linux/dw_apb_timer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dw_apb_timer.h b/include/linux/dw_apb_timer.h index 49638ea3b776..07261d52a6df 100644 --- a/include/linux/dw_apb_timer.h +++ b/include/linux/dw_apb_timer.h @@ -46,7 +46,7 @@ struct dw_apb_clock_event_device * dw_apb_clockevent_init(int cpu, const char *name, unsigned rating, void __iomem *base, int irq, unsigned long freq); struct dw_apb_clocksource * -dw_apb_clocksource_init(unsigned rating, char *name, void __iomem *base, +dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base, unsigned long freq); void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs); void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs); -- cgit v1.2.2 From 4cd7f7a31178ff8a15ad2bc1258b9b2bf2cf51a4 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Wed, 14 Sep 2011 20:49:59 +0100 Subject: dt: add helper to read 64-bit integers Add a helper similar to of_property_read_u32() that handles 64-bit integers. v2/v3: constify device node and property name parameters. Cc: Grant Likely Reviewed-by: Rob Herring Signed-off-by: Jamie Iles Signed-off-by: Grant Likely --- include/linux/of.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 53107b09cbdf..1cc9930ba06a 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -200,6 +200,8 @@ extern int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, size_t sz); +extern int of_property_read_u64(const struct device_node *np, + const char *propname, u64 *out_value); extern int of_property_read_string(struct device_node *np, const char *propname, @@ -281,6 +283,12 @@ static inline const void *of_get_property(const struct device_node *node, return NULL; } +static inline int of_property_read_u64(const struct device_node *np, + const char *propname, u64 *out_value) +{ + return -ENOSYS; +} + #define of_match_ptr(_ptr) NULL #endif /* CONFIG_OF */ -- cgit v1.2.2 From 36b0b1d41541fc3b25faf38aa53c34cede357421 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Tue, 4 Oct 2011 19:36:44 -0500 Subject: drivers/video: fsl-diu-fb: fix some ioctls Use the _IOx macros to define the ioctl commands, instead of hard-coded numbers. Unfortunately, the original definitions of MFB_SET_PIXFMT and MFB_GET_PIXFMT used the wrong value for the size, so these macros have new values now. To avoid breaking binary compatibility with older applications, we retain support for the original values, but the driver displays a warning message if they're used. Also remove the FBIOGET_GWINFO and FBIOPUT_GWINFO ioctls. FBIOPUT_GWINFO was never implemented, and FBIOGET_GWINFO was never used by any application. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index df23f599f5db..e19c531be065 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -33,22 +33,27 @@ struct mfb_chroma_key { }; struct aoi_display_offset { - int x_aoi_d; - int y_aoi_d; + __s32 x_aoi_d; + __s32 y_aoi_d; }; #define MFB_SET_CHROMA_KEY _IOW('M', 1, struct mfb_chroma_key) #define MFB_SET_BRIGHTNESS _IOW('M', 3, __u8) +#define MFB_SET_ALPHA _IOW('M', 0, __u8) +#define MFB_GET_ALPHA _IOR('M', 0, __u8) +#define MFB_SET_AOID _IOW('M', 4, struct aoi_display_offset) +#define MFB_GET_AOID _IOR('M', 4, struct aoi_display_offset) +#define MFB_SET_PIXFMT _IOW('M', 8, __u32) +#define MFB_GET_PIXFMT _IOR('M', 8, __u32) -#define MFB_SET_ALPHA 0x80014d00 -#define MFB_GET_ALPHA 0x40014d00 -#define MFB_SET_AOID 0x80084d04 -#define MFB_GET_AOID 0x40084d04 -#define MFB_SET_PIXFMT 0x80014d08 -#define MFB_GET_PIXFMT 0x40014d08 - -#define FBIOGET_GWINFO 0x46E0 -#define FBIOPUT_GWINFO 0x46E1 +/* + * The original definitions of MFB_SET_PIXFMT and MFB_GET_PIXFMT used the + * wrong value for 'size' field of the ioctl. The current macros above use the + * right size, but we still need to provide backwards compatibility, at least + * for a while. +*/ +#define MFB_SET_PIXFMT_OLD 0x80014d08 +#define MFB_GET_PIXFMT_OLD 0x40014d08 #ifdef __KERNEL__ #include -- cgit v1.2.2 From b715f9f04c85382e9ac824ba49465fc15cf67418 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Wed, 28 Sep 2011 16:19:48 -0500 Subject: drivers/video: fsl-diu-fb: move some definitions out of the header file Move several macros and structures from the Freescale DIU driver's header file into the source file, because they're only used by that file. Also delete a few unused macros. The diu and diu_ad structures cannot be moved because they're being used by the MPC5121 platform file. A future patch eliminate the need for the platform file to access these structs, so they'll be moved also. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 47 ---------------------------------------------- 1 file changed, 47 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index e19c531be065..363d5e290cad 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -56,7 +56,6 @@ struct aoi_display_offset { #define MFB_GET_PIXFMT_OLD 0x40014d08 #ifdef __KERNEL__ -#include /* * These are the fields of area descriptor(in DDR memory) for every plane @@ -154,39 +153,6 @@ struct diu { __be32 plut; } __attribute__ ((packed)); -struct diu_hw { - struct diu *diu_reg; - spinlock_t reg_lock; - - __u32 mode; /* DIU operation mode */ -}; - -struct diu_addr { - void *vaddr; /* Virtual address */ - dma_addr_t paddr; /* Physical address */ - __u32 offset; -}; - -struct diu_pool { - struct diu_addr ad; - struct diu_addr gamma; - struct diu_addr pallete; - struct diu_addr cursor; -}; - -#define FSL_DIU_BASE_OFFSET 0x2C000 /* Offset of DIU */ -#define INT_LCDC 64 /* DIU interrupt number */ - -#define FSL_AOI_NUM 6 /* 5 AOIs and one dummy AOI */ - /* 1 for plane 0, 2 for plane 1&2 each */ - -/* Minimum X and Y resolutions */ -#define MIN_XRES 64 -#define MIN_YRES 64 - -/* HW cursor parameters */ -#define MAX_CURS 32 - /* Modes of operation of DIU */ #define MFB_MODE0 0 /* DIU off */ #define MFB_MODE1 1 /* All three planes output to display */ @@ -194,18 +160,5 @@ struct diu_pool { #define MFB_MODE3 3 /* All three planes written back to memory */ #define MFB_MODE4 4 /* Color bar generation */ -/* INT_STATUS/INT_MASK field descriptions */ -#define INT_VSYNC 0x01 /* Vsync interrupt */ -#define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */ -#define INT_UNDRUN 0x04 /* Under run exception interrupt */ -#define INT_PARERR 0x08 /* Display parameters error interrupt */ -#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */ - -/* Panels'operation modes */ -#define MFB_TYPE_OUTPUT 0 /* Panel output to display */ -#define MFB_TYPE_OFF 1 /* Panel off */ -#define MFB_TYPE_WB 2 /* Panel written back to memory */ -#define MFB_TYPE_TEST 3 /* Panel generate color bar */ - #endif /* __KERNEL__ */ #endif /* __FSL_DIU_FB_H__ */ -- cgit v1.2.2 From c4e5a0232763db22d6c60c391ed5816b2b2ac063 Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Wed, 28 Sep 2011 16:19:53 -0500 Subject: drivers/video: fsl-diu-fb: only DIU modes 0 and 1 are supported The Freescale DIU video controller supports five video "modes", but only the first two are used by the driver. The other three are special modes that don't make sense for a framebuffer driver. Therefore, there's no point in keeping a global variable that indicates which mode we're supposed to use. Signed-off-by: Timur Tabi Signed-off-by: Florian Tobias Schandinat --- include/linux/fsl-diu-fb.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index 363d5e290cad..11c16a1fb9e3 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -153,12 +153,12 @@ struct diu { __be32 plut; } __attribute__ ((packed)); -/* Modes of operation of DIU */ +/* + * Modes of operation of DIU. The DIU supports five different modes, but + * the driver only supports modes 0 and 1. + */ #define MFB_MODE0 0 /* DIU off */ #define MFB_MODE1 1 /* All three planes output to display */ -#define MFB_MODE2 2 /* Plane 1 to display, planes 2+3 written back*/ -#define MFB_MODE3 3 /* All three planes written back to memory */ -#define MFB_MODE4 4 /* Color bar generation */ #endif /* __KERNEL__ */ #endif /* __FSL_DIU_FB_H__ */ -- cgit v1.2.2 From 7c2f8e4009d4b66c8458e3a5c20510b4262853bb Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Wed, 5 Oct 2011 15:53:25 +0200 Subject: ALSA: jack - Add "Line In" input jack constants Similar to Line Out, these constants form the base for future patches enabling input jack reporting for Line in jacks. Signed-off-by: David Henningsson Acked-by: Mark Brown Signed-off-by: Takashi Iwai --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index a637e7814334..a514fb8faea3 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -814,6 +814,7 @@ struct input_keymap_entry { #define SW_KEYPAD_SLIDE 0x0a /* set = keypad slide out */ #define SW_FRONT_PROXIMITY 0x0b /* set = front proximity sensor active */ #define SW_ROTATE_LOCK 0x0c /* set = rotate locked/disabled */ +#define SW_LINEIN_INSERT 0x0d /* set = inserted */ #define SW_MAX 0x0f #define SW_CNT (SW_MAX+1) -- cgit v1.2.2 From a240f76165e6255384d4bdb8139895fac7988799 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 5 Oct 2011 14:01:16 +0200 Subject: perf, core: Introduce attrs to count in either host or guest mode The two new attributes exclude_guest and exclude_host can bes used by user-space to tell the kernel to setup performance counter to either only count while the CPU is in guest or in host mode. An additional check is also introduced to make sure user-space does not try to exclude guest and host mode from counting. Signed-off-by: Joerg Roedel Signed-off-by: Gleb Natapov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1317816084-18026-2-git-send-email-gleb@redhat.com Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index c816075c01ce..1e9ebe5e0091 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -220,7 +220,10 @@ struct perf_event_attr { mmap_data : 1, /* non-exec mmap data */ sample_id_all : 1, /* sample_type all events */ - __reserved_1 : 45; + exclude_host : 1, /* don't count in host */ + exclude_guest : 1, /* don't count in guest */ + + __reserved_1 : 43; union { __u32 wakeup_events; /* wakeup every n events */ -- cgit v1.2.2 From 8d6c0b216fd9a7f4b34aca6bd822756b9ef5690b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 4 Oct 2011 16:33:14 -0300 Subject: [media] videodev2: Reorganize standard macros and add a few more macros Reorganize the standards macro and add a few more, that will be used on msp3400 in order to allow it to detect the audio standard. Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 79 +++++++++++++++++++++++++++++++++++------------ 1 file changed, 59 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 9d14523487d1..225560c1a10f 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -759,10 +759,10 @@ typedef __u64 v4l2_std_id; #define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400) #define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800) -#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) -#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) +#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) /* BTSC */ +#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) /* EIA-J */ #define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000) -#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) +#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) /* FM A2 */ #define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000) #define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000) @@ -786,47 +786,86 @@ typedef __u64 v4l2_std_id; v4l2-common.c should be fixed. */ -/* some merged standards */ -#define V4L2_STD_MN (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC) -#define V4L2_STD_B (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B) -#define V4L2_STD_GH (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H) -#define V4L2_STD_DK (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK) +/* + * Some macros to merge video standards in order to make live easier for the + * drivers and V4L2 applications + */ -/* some common needed stuff */ -#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\ - V4L2_STD_PAL_B1 |\ - V4L2_STD_PAL_G) -#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\ - V4L2_STD_PAL_D1 |\ - V4L2_STD_PAL_K) -#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\ - V4L2_STD_PAL_DK |\ - V4L2_STD_PAL_H |\ - V4L2_STD_PAL_I) +/* + * "Common" NTSC/M - It should be noticed that V4L2_STD_NTSC_443 is + * Missing here. + */ #define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\ V4L2_STD_NTSC_M_JP |\ V4L2_STD_NTSC_M_KR) +/* Secam macros */ #define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D |\ V4L2_STD_SECAM_K |\ V4L2_STD_SECAM_K1) +/* All Secam Standards */ #define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\ V4L2_STD_SECAM_G |\ V4L2_STD_SECAM_H |\ V4L2_STD_SECAM_DK |\ V4L2_STD_SECAM_L |\ V4L2_STD_SECAM_LC) +/* PAL macros */ +#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\ + V4L2_STD_PAL_B1 |\ + V4L2_STD_PAL_G) +#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\ + V4L2_STD_PAL_D1 |\ + V4L2_STD_PAL_K) +/* + * "Common" PAL - This macro is there to be compatible with the old + * V4L1 concept of "PAL": /BGDKHI. + * Several PAL standards are mising here: /M, /N and /Nc + */ +#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\ + V4L2_STD_PAL_DK |\ + V4L2_STD_PAL_H |\ + V4L2_STD_PAL_I) +/* Chroma "agnostic" standards */ +#define V4L2_STD_B (V4L2_STD_PAL_B |\ + V4L2_STD_PAL_B1 |\ + V4L2_STD_SECAM_B) +#define V4L2_STD_G (V4L2_STD_PAL_G |\ + V4L2_STD_SECAM_G) +#define V4L2_STD_H (V4L2_STD_PAL_H |\ + V4L2_STD_SECAM_H) +#define V4L2_STD_L (V4L2_STD_SECAM_L |\ + V4L2_STD_SECAM_LC) +#define V4L2_STD_GH (V4L2_STD_G |\ + V4L2_STD_H) +#define V4L2_STD_DK (V4L2_STD_PAL_DK |\ + V4L2_STD_SECAM_DK) +#define V4L2_STD_BG (V4L2_STD_B |\ + V4L2_STD_G) +#define V4L2_STD_MN (V4L2_STD_PAL_M |\ + V4L2_STD_PAL_N |\ + V4L2_STD_PAL_Nc |\ + V4L2_STD_NTSC) +/* Standards where MTS/BTSC stereo could be found */ +#define V4L2_STD_MTS (V4L2_STD_NTSC_M |\ + V4L2_STD_PAL_M |\ + V4L2_STD_PAL_N |\ + V4L2_STD_PAL_Nc) + +/* Standards for Countries with 60Hz Line frequency */ #define V4L2_STD_525_60 (V4L2_STD_PAL_M |\ V4L2_STD_PAL_60 |\ V4L2_STD_NTSC |\ V4L2_STD_NTSC_443) +/* Standards for Countries with 50Hz Line frequency */ #define V4L2_STD_625_50 (V4L2_STD_PAL |\ V4L2_STD_PAL_N |\ V4L2_STD_PAL_Nc |\ V4L2_STD_SECAM) + #define V4L2_STD_ATSC (V4L2_STD_ATSC_8_VSB |\ V4L2_STD_ATSC_16_VSB) - +/* Macros with none and all analog standards */ #define V4L2_STD_UNKNOWN 0 #define V4L2_STD_ALL (V4L2_STD_525_60 |\ V4L2_STD_625_50) -- cgit v1.2.2 From 3f0292ae8bb100cc8f96106a3de277df48134887 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Wed, 5 Oct 2011 12:27:05 +0200 Subject: regulator: Add driver for gpio-controlled regulators This patch adds support for regulators that can be controlled via gpios. Examples for such regulators are the TI-tps65024x voltage regulators with 4 fixed and 1 runtime-switchable voltage regulators or the TI-bq240XX charger regulators. The number of controlling gpios is not limited, the mapping between voltage/current and target gpio state is done via the states map and the driver can be used for either voltage or current regulators. A mapping for a regulator with two GPIOs could look like: gpios = { { .gpio = GPIO1, .flags = GPIOF_OUT_INIT_HIGH, .label = "gpio name 1" }, { .gpio = GPIO2, .flags = GPIOF_OUT_INIT_LOW, .label = "gpio name 2" }, } The flags element of the gpios array determines the initial state of the gpio, set during probe. The initial state of the regulator is also calculated from these values states = { { .value = volt_or_cur1, .gpios = (0 << 1) | (0 << 0) }, { .value = volt_or_cur2, .gpios = (0 << 1) | (1 << 0) }, { .value = volt_or_cur3, .gpios = (1 << 1) | (0 << 0) }, { .value = volt_or_cur4, .gpios = (1 << 1) | (1 << 0) }, } The target-state for the n-th gpio is determined by the n-th bit in the bitfield of the target-value. Signed-off-by: Heiko Stuebner Signed-off-by: Mark Brown --- include/linux/regulator/gpio-regulator.h | 87 ++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 include/linux/regulator/gpio-regulator.h (limited to 'include/linux') diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h new file mode 100644 index 000000000000..19fbd267406d --- /dev/null +++ b/include/linux/regulator/gpio-regulator.h @@ -0,0 +1,87 @@ +/* + * gpio-regulator.h + * + * Copyright 2011 Heiko Stuebner + * + * based on fixed.h + * + * Copyright 2008 Wolfson Microelectronics PLC. + * + * Author: Mark Brown + * + * Copyright (c) 2009 Nokia Corporation + * Roger Quadros + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + */ + +#ifndef __REGULATOR_GPIO_H +#define __REGULATOR_GPIO_H + +struct regulator_init_data; + +enum regulator_type; + +/** + * struct gpio_regulator_state - state description + * @value: microvolts or microamps + * @gpios: bitfield of gpio target-states for the value + * + * This structure describes a supported setting of the regulator + * and the necessary gpio-state to achieve it. + * + * The n-th bit in the bitfield describes the state of the n-th GPIO + * from the gpios-array defined in gpio_regulator_config below. + */ +struct gpio_regulator_state { + int value; + int gpios; +}; + +/** + * struct gpio_regulator_config - config structure + * @supply_name: Name of the regulator supply + * @enable_gpio: GPIO to use for enable control + * set to -EINVAL if not used + * @enable_high: Polarity of enable GPIO + * 1 = Active high, 0 = Active low + * @enabled_at_boot: Whether regulator has been enabled at + * boot or not. 1 = Yes, 0 = No + * This is used to keep the regulator at + * the default state + * @startup_delay: Start-up time in microseconds + * @gpios: Array containing the gpios needed to control + * the setting of the regulator + * @nr_gpios: Number of gpios + * @states: Array of gpio_regulator_state entries describing + * the gpio state for specific voltages + * @nr_states: Number of states available + * @regulator_type: either REGULATOR_CURRENT or REGULATOR_VOLTAGE + * @init_data: regulator_init_data + * + * This structure contains gpio-voltage regulator configuration + * information that must be passed by platform code to the + * gpio-voltage regulator driver. + */ +struct gpio_regulator_config { + const char *supply_name; + + int enable_gpio; + unsigned enable_high:1; + unsigned enabled_at_boot:1; + unsigned startup_delay; + + struct gpio *gpios; + int nr_gpios; + + struct gpio_regulator_state *states; + int nr_states; + + enum regulator_type type; + struct regulator_init_data *init_data; +}; + +#endif -- cgit v1.2.2 From 40bfa16dac2adcded9e2eda58246cc3700d97de4 Mon Sep 17 00:00:00 2001 From: Tao Ma Date: Fri, 7 Oct 2011 23:21:18 +0800 Subject: ext3: Remove the obsolete broken EXT3_IOC32_WAIT_FOR_READONLY. There are no user of EXT3_IOC32_WAIT_FOR_READONLY and also it is broken. No one set the set_ro_timer, no one wake up us and our state is set to TASK_INTERRUPTIBLE not RUNNING. So remove it. Cc: Jan Kara Signed-off-by: Tao Ma Signed-off-by: Jan Kara --- include/linux/ext3_fs_sb.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ext3_fs_sb.h b/include/linux/ext3_fs_sb.h index 258088ab3c6b..64365252f1b0 100644 --- a/include/linux/ext3_fs_sb.h +++ b/include/linux/ext3_fs_sb.h @@ -76,10 +76,6 @@ struct ext3_sb_info { struct mutex s_resize_lock; unsigned long s_commit_interval; struct block_device *journal_bdev; -#ifdef CONFIG_JBD_DEBUG - struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */ - wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */ -#endif #ifdef CONFIG_QUOTA char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */ int s_jquota_fmt; /* Format of quota to use */ -- cgit v1.2.2 From 276532ba9666b36974cbe16f303fc8be99c9da17 Mon Sep 17 00:00:00 2001 From: Harro Haan Date: Mon, 10 Oct 2011 14:38:27 +0200 Subject: USB: fix ehci alignment error The Kirkwood gave an unaligned memory access error on line 742 of drivers/usb/host/echi-hcd.c: "ehci->last_periodic_enable = ktime_get_real();" Signed-off-by: Harro Haan Cc: stable Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/hcd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index a4cd6c58870a..03354d557b79 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -178,7 +178,7 @@ struct usb_hcd { * this structure. */ unsigned long hcd_priv[0] - __attribute__ ((aligned(sizeof(unsigned long)))); + __attribute__ ((aligned(sizeof(s64)))); }; /* 2.4 does this a bit differently ... */ -- cgit v1.2.2 From 46a971913611a23478283931460a95be962ce329 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 4 Oct 2011 12:29:52 -0700 Subject: Staging: hv: move hyperv code out of staging directory After many years wandering the desert, it is finally time for the Microsoft HyperV code to move out of the staging directory. Or at least the core hyperv bus code, and the utility driver, the rest still have some review to get through by the various subsystem maintainers. Signed-off-by: Greg Kroah-Hartman Signed-off-by: K. Y. Srinivasan --- include/linux/hyperv.h | 969 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 969 insertions(+) create mode 100644 include/linux/hyperv.h (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h new file mode 100644 index 000000000000..edaa9e2f58ec --- /dev/null +++ b/include/linux/hyperv.h @@ -0,0 +1,969 @@ +/* + * + * Copyright (c) 2011, Microsoft Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 Temple + * Place - Suite 330, Boston, MA 02111-1307 USA. + * + * Authors: + * Haiyang Zhang + * Hank Janssen + * K. Y. Srinivasan + * + */ + +#ifndef _HYPERV_H +#define _HYPERV_H + +#include +#include +#include +#include +#include +#include +#include +#include + + +#include + + +#define MAX_PAGE_BUFFER_COUNT 16 +#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ + +#pragma pack(push, 1) + +/* Single-page buffer */ +struct hv_page_buffer { + u32 len; + u32 offset; + u64 pfn; +}; + +/* Multiple-page buffer */ +struct hv_multipage_buffer { + /* Length and Offset determines the # of pfns in the array */ + u32 len; + u32 offset; + u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; +}; + +/* 0x18 includes the proprietary packet header */ +#define MAX_PAGE_BUFFER_PACKET (0x18 + \ + (sizeof(struct hv_page_buffer) * \ + MAX_PAGE_BUFFER_COUNT)) +#define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ + sizeof(struct hv_multipage_buffer)) + + +#pragma pack(pop) + +struct hv_ring_buffer { + /* Offset in bytes from the start of ring data below */ + u32 write_index; + + /* Offset in bytes from the start of ring data below */ + u32 read_index; + + u32 interrupt_mask; + + /* Pad it to PAGE_SIZE so that data starts on page boundary */ + u8 reserved[4084]; + + /* NOTE: + * The interrupt_mask field is used only for channels but since our + * vmbus connection also uses this data structure and its data starts + * here, we commented out this field. + */ + + /* + * Ring data starts here + RingDataStartOffset + * !!! DO NOT place any fields below this !!! + */ + u8 buffer[0]; +} __packed; + +struct hv_ring_buffer_info { + struct hv_ring_buffer *ring_buffer; + u32 ring_size; /* Include the shared header */ + spinlock_t ring_lock; + + u32 ring_datasize; /* < ring_size */ + u32 ring_data_startoffset; +}; + +struct hv_ring_buffer_debug_info { + u32 current_interrupt_mask; + u32 current_read_index; + u32 current_write_index; + u32 bytes_avail_toread; + u32 bytes_avail_towrite; +}; + +/* + * We use the same version numbering for all Hyper-V modules. + * + * Definition of versioning is as follows; + * + * Major Number Changes for these scenarios; + * 1. When a new version of Windows Hyper-V + * is released. + * 2. A Major change has occurred in the + * Linux IC's. + * (For example the merge for the first time + * into the kernel) Every time the Major Number + * changes, the Revision number is reset to 0. + * Minor Number Changes when new functionality is added + * to the Linux IC's that is not a bug fix. + * + * 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync + */ +#define HV_DRV_VERSION "3.1" + + +/* + * A revision number of vmbus that is used for ensuring both ends on a + * partition are using compatible versions. + */ +#define VMBUS_REVISION_NUMBER 13 + +/* Make maximum size of pipe payload of 16K */ +#define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) + +/* Define PipeMode values. */ +#define VMBUS_PIPE_TYPE_BYTE 0x00000000 +#define VMBUS_PIPE_TYPE_MESSAGE 0x00000004 + +/* The size of the user defined data buffer for non-pipe offers. */ +#define MAX_USER_DEFINED_BYTES 120 + +/* The size of the user defined data buffer for pipe offers. */ +#define MAX_PIPE_USER_DEFINED_BYTES 116 + +/* + * At the center of the Channel Management library is the Channel Offer. This + * struct contains the fundamental information about an offer. + */ +struct vmbus_channel_offer { + uuid_le if_type; + uuid_le if_instance; + u64 int_latency; /* in 100ns units */ + u32 if_revision; + u32 server_ctx_size; /* in bytes */ + u16 chn_flags; + u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ + + union { + /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */ + struct { + unsigned char user_def[MAX_USER_DEFINED_BYTES]; + } std; + + /* + * Pipes: + * The following sructure is an integrated pipe protocol, which + * is implemented on top of standard user-defined data. Pipe + * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own + * use. + */ + struct { + u32 pipe_mode; + unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; + } pipe; + } u; + u32 padding; +} __packed; + +/* Server Flags */ +#define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1 +#define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2 +#define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4 +#define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10 +#define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100 +#define VMBUS_CHANNEL_PARENT_OFFER 0x200 +#define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400 + +struct vmpacket_descriptor { + u16 type; + u16 offset8; + u16 len8; + u16 flags; + u64 trans_id; +} __packed; + +struct vmpacket_header { + u32 prev_pkt_start_offset; + struct vmpacket_descriptor descriptor; +} __packed; + +struct vmtransfer_page_range { + u32 byte_count; + u32 byte_offset; +} __packed; + +struct vmtransfer_page_packet_header { + struct vmpacket_descriptor d; + u16 xfer_pageset_id; + bool sender_owns_set; + u8 reserved; + u32 range_cnt; + struct vmtransfer_page_range ranges[1]; +} __packed; + +struct vmgpadl_packet_header { + struct vmpacket_descriptor d; + u32 gpadl; + u32 reserved; +} __packed; + +struct vmadd_remove_transfer_page_set { + struct vmpacket_descriptor d; + u32 gpadl; + u16 xfer_pageset_id; + u16 reserved; +} __packed; + +/* + * This structure defines a range in guest physical space that can be made to + * look virtually contiguous. + */ +struct gpa_range { + u32 byte_count; + u32 byte_offset; + u64 pfn_array[0]; +}; + +/* + * This is the format for an Establish Gpadl packet, which contains a handle by + * which this GPADL will be known and a set of GPA ranges associated with it. + * This can be converted to a MDL by the guest OS. If there are multiple GPA + * ranges, then the resulting MDL will be "chained," representing multiple VA + * ranges. + */ +struct vmestablish_gpadl { + struct vmpacket_descriptor d; + u32 gpadl; + u32 range_cnt; + struct gpa_range range[1]; +} __packed; + +/* + * This is the format for a Teardown Gpadl packet, which indicates that the + * GPADL handle in the Establish Gpadl packet will never be referenced again. + */ +struct vmteardown_gpadl { + struct vmpacket_descriptor d; + u32 gpadl; + u32 reserved; /* for alignment to a 8-byte boundary */ +} __packed; + +/* + * This is the format for a GPA-Direct packet, which contains a set of GPA + * ranges, in addition to commands and/or data. + */ +struct vmdata_gpa_direct { + struct vmpacket_descriptor d; + u32 reserved; + u32 range_cnt; + struct gpa_range range[1]; +} __packed; + +/* This is the format for a Additional Data Packet. */ +struct vmadditional_data { + struct vmpacket_descriptor d; + u64 total_bytes; + u32 offset; + u32 byte_cnt; + unsigned char data[1]; +} __packed; + +union vmpacket_largest_possible_header { + struct vmpacket_descriptor simple_hdr; + struct vmtransfer_page_packet_header xfer_page_hdr; + struct vmgpadl_packet_header gpadl_hdr; + struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr; + struct vmestablish_gpadl establish_gpadl_hdr; + struct vmteardown_gpadl teardown_gpadl_hdr; + struct vmdata_gpa_direct data_gpa_direct_hdr; +}; + +#define VMPACKET_DATA_START_ADDRESS(__packet) \ + (void *)(((unsigned char *)__packet) + \ + ((struct vmpacket_descriptor)__packet)->offset8 * 8) + +#define VMPACKET_DATA_LENGTH(__packet) \ + ((((struct vmpacket_descriptor)__packet)->len8 - \ + ((struct vmpacket_descriptor)__packet)->offset8) * 8) + +#define VMPACKET_TRANSFER_MODE(__packet) \ + (((struct IMPACT)__packet)->type) + +enum vmbus_packet_type { + VM_PKT_INVALID = 0x0, + VM_PKT_SYNCH = 0x1, + VM_PKT_ADD_XFER_PAGESET = 0x2, + VM_PKT_RM_XFER_PAGESET = 0x3, + VM_PKT_ESTABLISH_GPADL = 0x4, + VM_PKT_TEARDOWN_GPADL = 0x5, + VM_PKT_DATA_INBAND = 0x6, + VM_PKT_DATA_USING_XFER_PAGES = 0x7, + VM_PKT_DATA_USING_GPADL = 0x8, + VM_PKT_DATA_USING_GPA_DIRECT = 0x9, + VM_PKT_CANCEL_REQUEST = 0xa, + VM_PKT_COMP = 0xb, + VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc, + VM_PKT_ADDITIONAL_DATA = 0xd +}; + +#define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 + + +/* Version 1 messages */ +enum vmbus_channel_message_type { + CHANNELMSG_INVALID = 0, + CHANNELMSG_OFFERCHANNEL = 1, + CHANNELMSG_RESCIND_CHANNELOFFER = 2, + CHANNELMSG_REQUESTOFFERS = 3, + CHANNELMSG_ALLOFFERS_DELIVERED = 4, + CHANNELMSG_OPENCHANNEL = 5, + CHANNELMSG_OPENCHANNEL_RESULT = 6, + CHANNELMSG_CLOSECHANNEL = 7, + CHANNELMSG_GPADL_HEADER = 8, + CHANNELMSG_GPADL_BODY = 9, + CHANNELMSG_GPADL_CREATED = 10, + CHANNELMSG_GPADL_TEARDOWN = 11, + CHANNELMSG_GPADL_TORNDOWN = 12, + CHANNELMSG_RELID_RELEASED = 13, + CHANNELMSG_INITIATE_CONTACT = 14, + CHANNELMSG_VERSION_RESPONSE = 15, + CHANNELMSG_UNLOAD = 16, +#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD + CHANNELMSG_VIEWRANGE_ADD = 17, + CHANNELMSG_VIEWRANGE_REMOVE = 18, +#endif + CHANNELMSG_COUNT +}; + +struct vmbus_channel_message_header { + enum vmbus_channel_message_type msgtype; + u32 padding; +} __packed; + +/* Query VMBus Version parameters */ +struct vmbus_channel_query_vmbus_version { + struct vmbus_channel_message_header header; + u32 version; +} __packed; + +/* VMBus Version Supported parameters */ +struct vmbus_channel_version_supported { + struct vmbus_channel_message_header header; + bool version_supported; +} __packed; + +/* Offer Channel parameters */ +struct vmbus_channel_offer_channel { + struct vmbus_channel_message_header header; + struct vmbus_channel_offer offer; + u32 child_relid; + u8 monitorid; + bool monitor_allocated; +} __packed; + +/* Rescind Offer parameters */ +struct vmbus_channel_rescind_offer { + struct vmbus_channel_message_header header; + u32 child_relid; +} __packed; + +/* + * Request Offer -- no parameters, SynIC message contains the partition ID + * Set Snoop -- no parameters, SynIC message contains the partition ID + * Clear Snoop -- no parameters, SynIC message contains the partition ID + * All Offers Delivered -- no parameters, SynIC message contains the partition + * ID + * Flush Client -- no parameters, SynIC message contains the partition ID + */ + +/* Open Channel parameters */ +struct vmbus_channel_open_channel { + struct vmbus_channel_message_header header; + + /* Identifies the specific VMBus channel that is being opened. */ + u32 child_relid; + + /* ID making a particular open request at a channel offer unique. */ + u32 openid; + + /* GPADL for the channel's ring buffer. */ + u32 ringbuffer_gpadlhandle; + + /* GPADL for the channel's server context save area. */ + u32 server_contextarea_gpadlhandle; + + /* + * The upstream ring buffer begins at offset zero in the memory + * described by RingBufferGpadlHandle. The downstream ring buffer + * follows it at this offset (in pages). + */ + u32 downstream_ringbuffer_pageoffset; + + /* User-specific data to be passed along to the server endpoint. */ + unsigned char userdata[MAX_USER_DEFINED_BYTES]; +} __packed; + +/* Open Channel Result parameters */ +struct vmbus_channel_open_result { + struct vmbus_channel_message_header header; + u32 child_relid; + u32 openid; + u32 status; +} __packed; + +/* Close channel parameters; */ +struct vmbus_channel_close_channel { + struct vmbus_channel_message_header header; + u32 child_relid; +} __packed; + +/* Channel Message GPADL */ +#define GPADL_TYPE_RING_BUFFER 1 +#define GPADL_TYPE_SERVER_SAVE_AREA 2 +#define GPADL_TYPE_TRANSACTION 8 + +/* + * The number of PFNs in a GPADL message is defined by the number of + * pages that would be spanned by ByteCount and ByteOffset. If the + * implied number of PFNs won't fit in this packet, there will be a + * follow-up packet that contains more. + */ +struct vmbus_channel_gpadl_header { + struct vmbus_channel_message_header header; + u32 child_relid; + u32 gpadl; + u16 range_buflen; + u16 rangecount; + struct gpa_range range[0]; +} __packed; + +/* This is the followup packet that contains more PFNs. */ +struct vmbus_channel_gpadl_body { + struct vmbus_channel_message_header header; + u32 msgnumber; + u32 gpadl; + u64 pfn[0]; +} __packed; + +struct vmbus_channel_gpadl_created { + struct vmbus_channel_message_header header; + u32 child_relid; + u32 gpadl; + u32 creation_status; +} __packed; + +struct vmbus_channel_gpadl_teardown { + struct vmbus_channel_message_header header; + u32 child_relid; + u32 gpadl; +} __packed; + +struct vmbus_channel_gpadl_torndown { + struct vmbus_channel_message_header header; + u32 gpadl; +} __packed; + +#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD +struct vmbus_channel_view_range_add { + struct vmbus_channel_message_header header; + PHYSICAL_ADDRESS viewrange_base; + u64 viewrange_length; + u32 child_relid; +} __packed; + +struct vmbus_channel_view_range_remove { + struct vmbus_channel_message_header header; + PHYSICAL_ADDRESS viewrange_base; + u32 child_relid; +} __packed; +#endif + +struct vmbus_channel_relid_released { + struct vmbus_channel_message_header header; + u32 child_relid; +} __packed; + +struct vmbus_channel_initiate_contact { + struct vmbus_channel_message_header header; + u32 vmbus_version_requested; + u32 padding2; + u64 interrupt_page; + u64 monitor_page1; + u64 monitor_page2; +} __packed; + +struct vmbus_channel_version_response { + struct vmbus_channel_message_header header; + bool version_supported; +} __packed; + +enum vmbus_channel_state { + CHANNEL_OFFER_STATE, + CHANNEL_OPENING_STATE, + CHANNEL_OPEN_STATE, +}; + +struct vmbus_channel_debug_info { + u32 relid; + enum vmbus_channel_state state; + uuid_le interfacetype; + uuid_le interface_instance; + u32 monitorid; + u32 servermonitor_pending; + u32 servermonitor_latency; + u32 servermonitor_connectionid; + u32 clientmonitor_pending; + u32 clientmonitor_latency; + u32 clientmonitor_connectionid; + + struct hv_ring_buffer_debug_info inbound; + struct hv_ring_buffer_debug_info outbound; +}; + +/* + * Represents each channel msg on the vmbus connection This is a + * variable-size data structure depending on the msg type itself + */ +struct vmbus_channel_msginfo { + /* Bookkeeping stuff */ + struct list_head msglistentry; + + /* So far, this is only used to handle gpadl body message */ + struct list_head submsglist; + + /* Synchronize the request/response if needed */ + struct completion waitevent; + union { + struct vmbus_channel_version_supported version_supported; + struct vmbus_channel_open_result open_result; + struct vmbus_channel_gpadl_torndown gpadl_torndown; + struct vmbus_channel_gpadl_created gpadl_created; + struct vmbus_channel_version_response version_response; + } response; + + u32 msgsize; + /* + * The channel message that goes out on the "wire". + * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header + */ + unsigned char msg[0]; +}; + +struct vmbus_close_msg { + struct vmbus_channel_msginfo info; + struct vmbus_channel_close_channel msg; +}; + +struct vmbus_channel { + struct list_head listentry; + + struct hv_device *device_obj; + + struct work_struct work; + + enum vmbus_channel_state state; + + struct vmbus_channel_offer_channel offermsg; + /* + * These are based on the OfferMsg.MonitorId. + * Save it here for easy access. + */ + u8 monitor_grp; + u8 monitor_bit; + + u32 ringbuffer_gpadlhandle; + + /* Allocated memory for ring buffer */ + void *ringbuffer_pages; + u32 ringbuffer_pagecount; + struct hv_ring_buffer_info outbound; /* send to parent */ + struct hv_ring_buffer_info inbound; /* receive from parent */ + spinlock_t inbound_lock; + struct workqueue_struct *controlwq; + + struct vmbus_close_msg close_msg; + + /* Channel callback are invoked in this workqueue context */ + /* HANDLE dataWorkQueue; */ + + void (*onchannel_callback)(void *context); + void *channel_callback_context; +}; + +void free_channel(struct vmbus_channel *channel); + +void vmbus_onmessage(void *context); + +int vmbus_request_offers(void); + +/* The format must be the same as struct vmdata_gpa_direct */ +struct vmbus_channel_packet_page_buffer { + u16 type; + u16 dataoffset8; + u16 length8; + u16 flags; + u64 transactionid; + u32 reserved; + u32 rangecount; + struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT]; +} __packed; + +/* The format must be the same as struct vmdata_gpa_direct */ +struct vmbus_channel_packet_multipage_buffer { + u16 type; + u16 dataoffset8; + u16 length8; + u16 flags; + u64 transactionid; + u32 reserved; + u32 rangecount; /* Always 1 in this case */ + struct hv_multipage_buffer range; +} __packed; + + +extern int vmbus_open(struct vmbus_channel *channel, + u32 send_ringbuffersize, + u32 recv_ringbuffersize, + void *userdata, + u32 userdatalen, + void(*onchannel_callback)(void *context), + void *context); + +extern void vmbus_close(struct vmbus_channel *channel); + +extern int vmbus_sendpacket(struct vmbus_channel *channel, + const void *buffer, + u32 bufferLen, + u64 requestid, + enum vmbus_packet_type type, + u32 flags); + +extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, + struct hv_page_buffer pagebuffers[], + u32 pagecount, + void *buffer, + u32 bufferlen, + u64 requestid); + +extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, + struct hv_multipage_buffer *mpb, + void *buffer, + u32 bufferlen, + u64 requestid); + +extern int vmbus_establish_gpadl(struct vmbus_channel *channel, + void *kbuffer, + u32 size, + u32 *gpadl_handle); + +extern int vmbus_teardown_gpadl(struct vmbus_channel *channel, + u32 gpadl_handle); + +extern int vmbus_recvpacket(struct vmbus_channel *channel, + void *buffer, + u32 bufferlen, + u32 *buffer_actual_len, + u64 *requestid); + +extern int vmbus_recvpacket_raw(struct vmbus_channel *channel, + void *buffer, + u32 bufferlen, + u32 *buffer_actual_len, + u64 *requestid); + + +extern void vmbus_get_debug_info(struct vmbus_channel *channel, + struct vmbus_channel_debug_info *debug); + +extern void vmbus_ontimer(unsigned long data); + + +#define LOWORD(dw) ((unsigned short)(dw)) +#define HIWORD(dw) ((unsigned short)(((unsigned int) (dw) >> 16) & 0xFFFF)) + + +#define VMBUS 0x0001 +#define STORVSC 0x0002 +#define NETVSC 0x0004 +#define INPUTVSC 0x0008 +#define BLKVSC 0x0010 +#define VMBUS_DRV 0x0100 +#define STORVSC_DRV 0x0200 +#define NETVSC_DRV 0x0400 +#define INPUTVSC_DRV 0x0800 +#define BLKVSC_DRV 0x1000 + +#define ALL_MODULES (VMBUS |\ + STORVSC |\ + NETVSC |\ + INPUTVSC |\ + BLKVSC |\ + VMBUS_DRV |\ + STORVSC_DRV |\ + NETVSC_DRV |\ + INPUTVSC_DRV|\ + BLKVSC_DRV) + +/* Logging Level */ +#define ERROR_LVL 3 +#define WARNING_LVL 4 +#define INFO_LVL 6 +#define DEBUG_LVL 7 +#define DEBUG_LVL_ENTEREXIT 8 +#define DEBUG_RING_LVL 9 + +extern unsigned int vmbus_loglevel; + +#define DPRINT(mod, lvl, fmt, args...) do {\ + if ((mod & (HIWORD(vmbus_loglevel))) && \ + (lvl <= LOWORD(vmbus_loglevel))) \ + printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ + } while (0) + +#define DPRINT_DBG(mod, fmt, args...) do {\ + if ((mod & (HIWORD(vmbus_loglevel))) && \ + (DEBUG_LVL <= LOWORD(vmbus_loglevel))) \ + printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ + } while (0) + +#define DPRINT_INFO(mod, fmt, args...) do {\ + if ((mod & (HIWORD(vmbus_loglevel))) && \ + (INFO_LVL <= LOWORD(vmbus_loglevel))) \ + printk(KERN_INFO #mod": " fmt "\n", ## args);\ + } while (0) + +#define DPRINT_WARN(mod, fmt, args...) do {\ + if ((mod & (HIWORD(vmbus_loglevel))) && \ + (WARNING_LVL <= LOWORD(vmbus_loglevel))) \ + printk(KERN_WARNING #mod": WARNING! " fmt "\n", ## args);\ + } while (0) + +#define DPRINT_ERR(mod, fmt, args...) do {\ + if ((mod & (HIWORD(vmbus_loglevel))) && \ + (ERROR_LVL <= LOWORD(vmbus_loglevel))) \ + printk(KERN_ERR #mod": %s() ERROR!! " fmt "\n", \ + __func__, ## args);\ + } while (0) + + + +struct hv_driver; +struct hv_device; + +struct hv_dev_port_info { + u32 int_mask; + u32 read_idx; + u32 write_idx; + u32 bytes_avail_toread; + u32 bytes_avail_towrite; +}; + +struct hv_device_info { + u32 chn_id; + u32 chn_state; + uuid_le chn_type; + uuid_le chn_instance; + + u32 monitor_id; + u32 server_monitor_pending; + u32 server_monitor_latency; + u32 server_monitor_conn_id; + u32 client_monitor_pending; + u32 client_monitor_latency; + u32 client_monitor_conn_id; + + struct hv_dev_port_info inbound; + struct hv_dev_port_info outbound; +}; + +/* Base driver object */ +struct hv_driver { + const char *name; + + /* the device type supported by this driver */ + uuid_le dev_type; + const struct hv_vmbus_device_id *id_table; + + struct device_driver driver; + + int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *); + int (*remove)(struct hv_device *); + void (*shutdown)(struct hv_device *); + +}; + +/* Base device object */ +struct hv_device { + /* the device type id of this device */ + uuid_le dev_type; + + /* the device instance id of this device */ + uuid_le dev_instance; + + struct device device; + + struct vmbus_channel *channel; +}; + + +static inline struct hv_device *device_to_hv_device(struct device *d) +{ + return container_of(d, struct hv_device, device); +} + +static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d) +{ + return container_of(d, struct hv_driver, driver); +} + +static inline void hv_set_drvdata(struct hv_device *dev, void *data) +{ + dev_set_drvdata(&dev->device, data); +} + +static inline void *hv_get_drvdata(struct hv_device *dev) +{ + return dev_get_drvdata(&dev->device); +} + +/* Vmbus interface */ +#define vmbus_driver_register(driver) \ + __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) +int __must_check __vmbus_driver_register(struct hv_driver *hv_driver, + struct module *owner, + const char *mod_name); +void vmbus_driver_unregister(struct hv_driver *hv_driver); + +/** + * VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device + * + * This macro is used to create a struct hv_vmbus_device_id that matches a + * specific device. + */ +#define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \ + g8, g9, ga, gb, gc, gd, ge, gf) \ + .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \ + g8, g9, ga, gb, gc, gd, ge, gf }, + +/* + * Common header for Hyper-V ICs + */ + +#define ICMSGTYPE_NEGOTIATE 0 +#define ICMSGTYPE_HEARTBEAT 1 +#define ICMSGTYPE_KVPEXCHANGE 2 +#define ICMSGTYPE_SHUTDOWN 3 +#define ICMSGTYPE_TIMESYNC 4 +#define ICMSGTYPE_VSS 5 + +#define ICMSGHDRFLAG_TRANSACTION 1 +#define ICMSGHDRFLAG_REQUEST 2 +#define ICMSGHDRFLAG_RESPONSE 4 + +#define HV_S_OK 0x00000000 +#define HV_E_FAIL 0x80004005 +#define HV_ERROR_NOT_SUPPORTED 0x80070032 +#define HV_ERROR_MACHINE_LOCKED 0x800704F7 + +/* + * While we want to handle util services as regular devices, + * there is only one instance of each of these services; so + * we statically allocate the service specific state. + */ + +struct hv_util_service { + u8 *recv_buffer; + void (*util_cb)(void *); + int (*util_init)(struct hv_util_service *); + void (*util_deinit)(void); +}; + +struct vmbuspipe_hdr { + u32 flags; + u32 msgsize; +} __packed; + +struct ic_version { + u16 major; + u16 minor; +} __packed; + +struct icmsg_hdr { + struct ic_version icverframe; + u16 icmsgtype; + struct ic_version icvermsg; + u16 icmsgsize; + u32 status; + u8 ictransaction_id; + u8 icflags; + u8 reserved[2]; +} __packed; + +struct icmsg_negotiate { + u16 icframe_vercnt; + u16 icmsg_vercnt; + u32 reserved; + struct ic_version icversion_data[1]; /* any size array */ +} __packed; + +struct shutdown_msg_data { + u32 reason_code; + u32 timeout_seconds; + u32 flags; + u8 display_message[2048]; +} __packed; + +struct heartbeat_msg_data { + u64 seq_num; + u32 reserved[8]; +} __packed; + +/* Time Sync IC defs */ +#define ICTIMESYNCFLAG_PROBE 0 +#define ICTIMESYNCFLAG_SYNC 1 +#define ICTIMESYNCFLAG_SAMPLE 2 + +#ifdef __x86_64__ +#define WLTIMEDELTA 116444736000000000L /* in 100ns unit */ +#else +#define WLTIMEDELTA 116444736000000000LL +#endif + +struct ictimesync_data { + u64 parenttime; + u64 childtime; + u64 roundtriptime; + u8 flags; +} __packed; + +struct hyperv_service_callback { + u8 msg_type; + char *log_msg; + uuid_le data; + struct vmbus_channel *channel; + void (*callback) (void *context); +}; + +extern void prep_negotiate_resp(struct icmsg_hdr *, + struct icmsg_negotiate *, u8 *); + +#endif /* _HYPERV_H */ -- cgit v1.2.2 From 540f41edc15473ca3b2876de72646546ae101374 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Wed, 5 Oct 2011 17:25:28 +1100 Subject: llist: Add back llist_add_batch() and llist_del_first() prototypes Commit 1230db8e1543 ("llist: Make some llist functions inline") has deleted the definitions, causing problems for (not upstream yet) code that tries to make use of them. Signed-off-by: Stephen Rothwell Acked-by: Peter Zijlstra Cc: Huang Ying Cc: David Miller Link: http://lkml.kernel.org/r/20111005172528.0d0a8afc65acef7ace22a24e@canb.auug.org.au Signed-off-by: Ingo Molnar --- include/linux/llist.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index 837fb4ae66fb..7287734e08d1 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -178,4 +178,10 @@ static inline struct llist_node *llist_del_all(struct llist_head *head) { return xchg(&head->first, NULL); } + +extern bool llist_add_batch(struct llist_node *new_first, + struct llist_node *new_last, + struct llist_head *head); +extern struct llist_node *llist_del_first(struct llist_head *head); + #endif /* LLIST_H */ -- cgit v1.2.2 From 407dd1644302ea78fa5d740e67a1c09677aa18a4 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 08:36:44 -0600 Subject: Staging: hv: remove unneeded asm include file in hyperv.h No one outside of the hyperv core needs to include the asm/hyperv.h file, so don't put it in the "global" include/linux/hyperv.h file. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index edaa9e2f58ec..4c8414a8b07f 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -35,9 +35,6 @@ #include -#include - - #define MAX_PAGE_BUFFER_COUNT 16 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ -- cgit v1.2.2 From da0e96315ca703ab6540cc7665549622f71c155f Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 08:42:28 -0600 Subject: hv: rename prep_negotiate_resp() to vmbus_prep_negotiate_resp() It's a global symbol, so properly prefix it and use the proper EXPORT value as well. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 4c8414a8b07f..98a57a51acfc 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -960,7 +960,7 @@ struct hyperv_service_callback { void (*callback) (void *context); }; -extern void prep_negotiate_resp(struct icmsg_hdr *, - struct icmsg_negotiate *, u8 *); +extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *, + struct icmsg_negotiate *, u8 *); #endif /* _HYPERV_H */ -- cgit v1.2.2 From a832a1eba94096513bc42c96f33957cc46c5f2bf Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 08:47:32 -0600 Subject: hv: remove a bunch of unused debug macros from hyperv.h These aren't used by anyone anymore, so remove them before someone tries to use them again. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 24 ------------------------ 1 file changed, 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 98a57a51acfc..2229073874b0 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -721,11 +721,8 @@ extern void vmbus_ontimer(unsigned long data); BLKVSC_DRV) /* Logging Level */ -#define ERROR_LVL 3 #define WARNING_LVL 4 #define INFO_LVL 6 -#define DEBUG_LVL 7 -#define DEBUG_LVL_ENTEREXIT 8 #define DEBUG_RING_LVL 9 extern unsigned int vmbus_loglevel; @@ -736,33 +733,12 @@ extern unsigned int vmbus_loglevel; printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ } while (0) -#define DPRINT_DBG(mod, fmt, args...) do {\ - if ((mod & (HIWORD(vmbus_loglevel))) && \ - (DEBUG_LVL <= LOWORD(vmbus_loglevel))) \ - printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ - } while (0) - -#define DPRINT_INFO(mod, fmt, args...) do {\ - if ((mod & (HIWORD(vmbus_loglevel))) && \ - (INFO_LVL <= LOWORD(vmbus_loglevel))) \ - printk(KERN_INFO #mod": " fmt "\n", ## args);\ - } while (0) - #define DPRINT_WARN(mod, fmt, args...) do {\ if ((mod & (HIWORD(vmbus_loglevel))) && \ (WARNING_LVL <= LOWORD(vmbus_loglevel))) \ printk(KERN_WARNING #mod": WARNING! " fmt "\n", ## args);\ } while (0) -#define DPRINT_ERR(mod, fmt, args...) do {\ - if ((mod & (HIWORD(vmbus_loglevel))) && \ - (ERROR_LVL <= LOWORD(vmbus_loglevel))) \ - printk(KERN_ERR #mod": %s() ERROR!! " fmt "\n", \ - __func__, ## args);\ - } while (0) - - - struct hv_driver; struct hv_device; -- cgit v1.2.2 From d181daa06dd72fa88652b1d8bf723570a9fc55ea Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:20:31 -0600 Subject: Staging: hv: storvsc: remove last usage of DPRINT_WARN Used the correct dev_warn() call instead. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 2229073874b0..097d6dbe685a 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -721,7 +721,6 @@ extern void vmbus_ontimer(unsigned long data); BLKVSC_DRV) /* Logging Level */ -#define WARNING_LVL 4 #define INFO_LVL 6 #define DEBUG_RING_LVL 9 @@ -733,11 +732,6 @@ extern unsigned int vmbus_loglevel; printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ } while (0) -#define DPRINT_WARN(mod, fmt, args...) do {\ - if ((mod & (HIWORD(vmbus_loglevel))) && \ - (WARNING_LVL <= LOWORD(vmbus_loglevel))) \ - printk(KERN_WARNING #mod": WARNING! " fmt "\n", ## args);\ - } while (0) struct hv_driver; struct hv_device; -- cgit v1.2.2 From 1a2643012fa2262e823b7f11d9732b7fea4c25ce Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:25:14 -0600 Subject: Staging: hv: remove last user of DPRINT() macro This also removed the unused function hv_dump_ring_info(). Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 097d6dbe685a..4fa32ec43aa4 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -722,17 +722,9 @@ extern void vmbus_ontimer(unsigned long data); /* Logging Level */ #define INFO_LVL 6 -#define DEBUG_RING_LVL 9 extern unsigned int vmbus_loglevel; -#define DPRINT(mod, lvl, fmt, args...) do {\ - if ((mod & (HIWORD(vmbus_loglevel))) && \ - (lvl <= LOWORD(vmbus_loglevel))) \ - printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ - } while (0) - - struct hv_driver; struct hv_device; -- cgit v1.2.2 From 815166b95df1acb4890e9dbdb26660e9c00a7505 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:27:48 -0600 Subject: Staging: hv: remove vmbus_loglevel as it is not used at all anymore As there is no user of this variable, it's time to delete it. For dynamic debugging of the hyperv code, use the standard dynamic debug kernel interface. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 4fa32ec43aa4..7211e2ce24f5 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -720,11 +720,6 @@ extern void vmbus_ontimer(unsigned long data); INPUTVSC_DRV|\ BLKVSC_DRV) -/* Logging Level */ -#define INFO_LVL 6 - -extern unsigned int vmbus_loglevel; - struct hv_driver; struct hv_device; -- cgit v1.2.2 From 5557e8a60570d0c2f3a06d6e9e6a0f5074c313f2 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:30:22 -0600 Subject: hv: remove unused LOWORD and HIWORD macros from hyperv.h They aren't used anywhere anymore now that the debugging macros are gone, so remove it from hyperv.h as well. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 7211e2ce24f5..6d9a53fc8a37 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -694,10 +694,6 @@ extern void vmbus_get_debug_info(struct vmbus_channel *channel, extern void vmbus_ontimer(unsigned long data); -#define LOWORD(dw) ((unsigned short)(dw)) -#define HIWORD(dw) ((unsigned short)(((unsigned int) (dw) >> 16) & 0xFFFF)) - - #define VMBUS 0x0001 #define STORVSC 0x0002 #define NETVSC 0x0004 -- cgit v1.2.2 From 7a4ba88cc11eb4ba72778f491d8241385cb0475d Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:33:29 -0600 Subject: hv: hyperv.h: remove unused module macros I have no idea what these were ever for, but they aren't used, so delete them. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6d9a53fc8a37..f2bf0a51914b 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -693,29 +693,6 @@ extern void vmbus_get_debug_info(struct vmbus_channel *channel, extern void vmbus_ontimer(unsigned long data); - -#define VMBUS 0x0001 -#define STORVSC 0x0002 -#define NETVSC 0x0004 -#define INPUTVSC 0x0008 -#define BLKVSC 0x0010 -#define VMBUS_DRV 0x0100 -#define STORVSC_DRV 0x0200 -#define NETVSC_DRV 0x0400 -#define INPUTVSC_DRV 0x0800 -#define BLKVSC_DRV 0x1000 - -#define ALL_MODULES (VMBUS |\ - STORVSC |\ - NETVSC |\ - INPUTVSC |\ - BLKVSC |\ - VMBUS_DRV |\ - STORVSC_DRV |\ - NETVSC_DRV |\ - INPUTVSC_DRV|\ - BLKVSC_DRV) - struct hv_driver; struct hv_device; -- cgit v1.2.2 From 2726f95e0b6c850b6162f287f2f83d9db37decd7 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:37:27 -0600 Subject: hv: hyperv.h: remove unneeded forward declarations of structures This file was created by mushing different .h files together and it shows. This change removes some unneeded forward declarations. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index f2bf0a51914b..ae865a11ad46 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -693,9 +693,6 @@ extern void vmbus_get_debug_info(struct vmbus_channel *channel, extern void vmbus_ontimer(unsigned long data); -struct hv_driver; -struct hv_device; - struct hv_dev_port_info { u32 int_mask; u32 read_idx; -- cgit v1.2.2 From 9f3e28e375a8d509a27efe89f3c8ea2a15aeb524 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:40:01 -0600 Subject: hv: remove free_channel() from hyperv.h This function is only used in the file it is declared in (channel_mgmt.c) so make it static and remove it from the hyperv.h file. Cc: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index ae865a11ad46..240e1141cbbd 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -606,8 +606,6 @@ struct vmbus_channel { void *channel_callback_context; }; -void free_channel(struct vmbus_channel *channel); - void vmbus_onmessage(void *context); int vmbus_request_offers(void); -- cgit v1.2.2 From 15b80d641793968605254c2bbb2aa9a10accb415 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Oct 2011 09:43:14 -0600 Subject: hv: remove struct hv_device_info from hyperv.h This is only used/needed by the vmbus core code, so move it out of the hyperv.h file and into the .c file that uses it. Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 240e1141cbbd..12ec328481de 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -699,24 +699,6 @@ struct hv_dev_port_info { u32 bytes_avail_towrite; }; -struct hv_device_info { - u32 chn_id; - u32 chn_state; - uuid_le chn_type; - uuid_le chn_instance; - - u32 monitor_id; - u32 server_monitor_pending; - u32 server_monitor_latency; - u32 server_monitor_conn_id; - u32 client_monitor_pending; - u32 client_monitor_latency; - u32 client_monitor_conn_id; - - struct hv_dev_port_info inbound; - struct hv_dev_port_info outbound; -}; - /* Base driver object */ struct hv_driver { const char *name; -- cgit v1.2.2 From 341deefe8f4584b09564193cb46d8cf386f491a5 Mon Sep 17 00:00:00 2001 From: Philip Rakity Date: Tue, 11 Oct 2011 20:54:55 -0700 Subject: Input: tsc2007 - make sure that X plate resistance is specified Abort driver initialization if X plate resistance was not specified in platform data as it will cause pressure to be always calculated as 0, and making userspace ignore touch coordinates. Signed-off-by: Philip Rakity Signed-off-by: Dmitry Torokhov --- include/linux/i2c/tsc2007.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c/tsc2007.h b/include/linux/i2c/tsc2007.h index 591427a63b06..506a9f7af51e 100644 --- a/include/linux/i2c/tsc2007.h +++ b/include/linux/i2c/tsc2007.h @@ -5,7 +5,7 @@ struct tsc2007_platform_data { u16 model; /* 2007. */ - u16 x_plate_ohms; + u16 x_plate_ohms; /* must be non-zero value */ u16 max_rt; /* max. resistance above which samples are ignored */ unsigned long poll_delay; /* delay (in ms) after pen-down event before polling starts */ -- cgit v1.2.2 From 1e036f65329901a2432c92132b785654944743d9 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 12 Oct 2011 11:57:53 +0300 Subject: Input: twl6040: Simplify vibra regsiter definitions The bits within the two control registers (for left and right channel) are identical. Use common names for the bits acros the two register. Also add the missing definition for the path selection bit. Signed-off-by: Peter Ujfalusi Acked-by: Dmitry Torokhov Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index d9e05eabef33..e6c755db4560 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -125,24 +125,18 @@ #define TWL6040_HSDACMODE (1 << 1) #define TWL6040_HSDRVMODE (1 << 3) -/* VIBCTLL (0x18) fields */ +/* VIBCTLL/R (0x18/0x1A) fields */ -#define TWL6040_VIBENAL 0x01 -#define TWL6040_VIBCTRLL 0x04 -#define TWL6040_VIBCTRLLP 0x08 -#define TWL6040_VIBCTRLLN 0x10 +#define TWL6040_VIBENA (1 << 0) +#define TWL6040_VIBSEL (1 << 1) +#define TWL6040_VIBCTRL (1 << 2) +#define TWL6040_VIBCTRL_P (1 << 3) +#define TWL6040_VIBCTRL_N (1 << 4) -/* VIBDATL (0x19) fields */ +/* VIBDATL/R (0x19/0x1B) fields */ #define TWL6040_VIBDAT_MAX 0x64 -/* VIBCTLR (0x1A) fields */ - -#define TWL6040_VIBENAR 0x01 -#define TWL6040_VIBCTRLR 0x04 -#define TWL6040_VIBCTRLRP 0x08 -#define TWL6040_VIBCTRLRN 0x10 - /* GPOCTL (0x1E) fields */ #define TWL6040_GPO1 0x01 -- cgit v1.2.2 From 31b402e3c9eb839a00530511dcf7de47bbf723f6 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 12 Oct 2011 11:57:54 +0300 Subject: MFD: twl6040: Cache the vibra control registers The vibra control register will be used from the ASoC codec driver as well. In order to avoid latency issues caused by I2C read access, cache the two control register within the core driver, so we do not need to reach out to the chip to read it back. Signed-off-by: Peter Ujfalusi Acked-by: Samuel Ortiz Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index e6c755db4560..2f8585a4c74b 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -184,6 +184,7 @@ struct twl6040 { int audpwron; int power_count; int rev; + u8 vibra_ctrl_cache[2]; int pll; unsigned int sysclk; -- cgit v1.2.2 From 70601ec10a2450369d554e49d708ab26deb17b66 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 12 Oct 2011 11:57:55 +0300 Subject: MFD: twl6040: function to query the vibra status for clients If the client only interested, if any of the vibra channels enabled, or if any of the channels are set to receive audio data via PDM. This function targets mainly the vibra driver, so it can check if it is allowed to execute effects ot not. Signed-off-by: Peter Ujfalusi Acked-by: Samuel Ortiz Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 2f8585a4c74b..87a4778ed4b0 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -209,10 +209,13 @@ int twl6040_get_pll(struct twl6040 *twl6040); unsigned int twl6040_get_sysclk(struct twl6040 *twl6040); int twl6040_irq_init(struct twl6040 *twl6040); void twl6040_irq_exit(struct twl6040 *twl6040); +/* Get the combined status of the vibra control register */ +int twl6040_get_vibralr_status(struct twl6040 *twl6040); static inline int twl6040_get_revid(struct twl6040 *twl6040) { return twl6040->rev; } + #endif /* End of __TWL6040_CODEC_H__ */ -- cgit v1.2.2 From 33b6816ca3a4027a1b5444c83c1c24c0b1991262 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 12 Oct 2011 14:46:02 +0300 Subject: ASoC: twl6040: Workaround for headset DC offset caused pop noise Both Headset DAC need to be turned on/off at the same time before any of the output drivers are enabled (HS Left/Right, Earpiece). Move the HS DAC enable code to sequenced DAPM_SUPPLY, and attach it to the DACs. Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown --- include/linux/mfd/twl6040.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 87a4778ed4b0..2463c2619596 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -122,6 +122,7 @@ /* HSLCTL/R (0x10/0x11) fields */ +#define TWL6040_HSDACENA (1 << 0) #define TWL6040_HSDACMODE (1 << 1) #define TWL6040_HSDRVMODE (1 << 3) -- cgit v1.2.2 From b238b8fa93353ab50c9a2b1e2fa47a0ab01c37cd Mon Sep 17 00:00:00 2001 From: Chen Gong Date: Wed, 12 Oct 2011 09:17:24 -0700 Subject: pstore: make pstore write function return normal success/fail value Currently pstore write interface employs record id as return value, but it is not enough because it can't tell caller if the write operation is successful. Pass the record id back via an argument pointer and return zero for success, non-zero for failure. Signed-off-by: Chen Gong Signed-off-by: Tony Luck --- include/linux/pstore.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index b91440e64d6e..ea567321ae3c 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -39,8 +39,8 @@ struct pstore_info { int (*close)(struct pstore_info *psi); ssize_t (*read)(u64 *id, enum pstore_type_id *type, struct timespec *time, struct pstore_info *psi); - u64 (*write)(enum pstore_type_id type, unsigned int part, - size_t size, struct pstore_info *psi); + int (*write)(enum pstore_type_id type, u64 *id, + unsigned int part, size_t size, struct pstore_info *psi); int (*erase)(enum pstore_type_id type, u64 id, struct pstore_info *psi); void *data; -- cgit v1.2.2 From 3ceca749668a52bd795585e0f71c6f0b04814f7b Mon Sep 17 00:00:00 2001 From: Murali Raja Date: Wed, 12 Oct 2011 09:00:35 +0000 Subject: net-netlink: Add a new attribute to expose TOS values via netlink This patch exposes the tos value for the TCP sockets when the TOS flag is requested in the ext_flags for the inet_diag request. This would mainly be used to expose TOS values for both for TCP and UDP sockets. Currently it is supported for TCP. When netlink support for UDP would be added the support to expose the TOS values would alse be done. For IPV4 tos value is exposed and for IPV6 tclass value is exposed. Signed-off-by: Murali Raja Acked-by: Stephen Hemminger Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/inet_diag.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h index bc8c49022084..80b480c97532 100644 --- a/include/linux/inet_diag.h +++ b/include/linux/inet_diag.h @@ -97,9 +97,10 @@ enum { INET_DIAG_INFO, INET_DIAG_VEGASINFO, INET_DIAG_CONG, + INET_DIAG_TOS, }; -#define INET_DIAG_MAX INET_DIAG_CONG +#define INET_DIAG_MAX INET_DIAG_TOS /* INET_DIAG_MEM */ -- cgit v1.2.2 From 05be8b81aafd4f95106a91ff3fd8581fa984fad9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 12 Oct 2011 21:05:53 -0700 Subject: Input: force feedback - potential integer wrap in input_ff_create() The problem here is that max_effects can wrap on 32 bits systems. We'd allocate a smaller amount of data than sizeof(struct ff_device). The call to kcalloc() on the next line would fail but it would write the NULL return outside of the memory we just allocated causing data corruption. The call path is that uinput_setup_device() get ->ff_effects_max from the user and sets the value in the ->private_data struct. From there it is: -> uinput_ioctl_handler() -> uinput_create_device() -> input_ff_create(dev, udev->ff_effects_max); I've also changed ff_effects_max so it's an unsigned int instead of a signed int as a cleanup. Signed-off-by: Dan Carpenter Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 2 +- include/linux/uinput.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 57add325e7a8..6d5eddb18c82 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1610,7 +1610,7 @@ struct ff_device { struct file *effect_owners[]; }; -int input_ff_create(struct input_dev *dev, int max_effects); +int input_ff_create(struct input_dev *dev, unsigned int max_effects); void input_ff_destroy(struct input_dev *dev); int input_ff_event(struct input_dev *dev, unsigned int type, unsigned int code, int value); diff --git a/include/linux/uinput.h b/include/linux/uinput.h index d28c726ede4f..2aa2881b0df9 100644 --- a/include/linux/uinput.h +++ b/include/linux/uinput.h @@ -68,7 +68,7 @@ struct uinput_device { unsigned char head; unsigned char tail; struct input_event buff[UINPUT_BUFFER_SIZE]; - int ff_effects_max; + unsigned int ff_effects_max; struct uinput_request *requests[UINPUT_NUM_REQUESTS]; wait_queue_head_t requests_waitq; -- cgit v1.2.2 From 2744e8afb3b76343e7eb8197e8b3e085036010a5 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 2 May 2011 20:50:54 +0200 Subject: drivers: create a pin control subsystem This creates a subsystem for handling of pin control devices. These are devices that control different aspects of package pins. Currently it handles pinmuxing, i.e. assigning electronic functions to groups of pins on primarily PGA and BGA type of chip packages which are common in embedded systems. The plan is to also handle other I/O pin control aspects such as biasing, driving, input properties such as schmitt-triggering, load capacitance etc within this subsystem, to remove a lot of ARM arch code as well as feature-creepy GPIO drivers which are implementing the same thing over and over again. This is being done to depopulate the arch/arm/* directory of such custom drivers and try to abstract the infrastructure they all need. See the Documentation/pinctrl.txt file that is part of this patch for more details. ChangeLog v1->v2: - Various minor fixes from Joe's and Stephens review comments - Added a pinmux_config() that can invoke custom configuration with arbitrary data passed in or out to/from the pinmux driver ChangeLog v2->v3: - Renamed subsystem folder to "pinctrl" since we will likely want to keep other pin control such as biasing in this subsystem too, so let us keep to something generic even though we're mainly doing pinmux now. - As a consequence, register pins as an abstract entity separate from the pinmux. The muxing functions will claim pins out of the pin pool and make sure they do not collide. Pins can now be named by the pinctrl core. - Converted the pin lookup from a static array into a radix tree, I agreed with Grant Likely to try to avoid any static allocation (which is crap for device tree stuff) so I just rewrote this to be dynamic, just like irq number descriptors. The platform-wide definition of number of pins goes away - this is now just the sum total of the pins registered to the subsystem. - Make sure mappings with only a function name and no device works properly. ChangeLog v3->v4: - Define a number space per controller instead of globally, Stephen and Grant requested the same thing so now maps need to define target controller, and the radix tree of pin descriptors is a property on each pin controller device. - Add a compulsory pinctrl device entry to the pinctrl mapping table. This must match the pinctrl device, like "pinctrl.0" - Split the file core.c in two: core.c and pinmux.c where the latter carry all pinmux stuff, the core is for generic pin control, and use local headers to access functionality between files. It is now possible to implement a "blank" pin controller without pinmux capabilities. This split will make new additions like pindrive.c, pinbias.c etc possible for combined drivers and chunks of functionality which is a GoodThing(TM). - Rewrite the interaction with the GPIO subsystem - the pin controller descriptor now handles this by defining an offset into the GPIO numberspace for its handled pin range. This is used to look up the apropriate pin controller for a GPIO pin. Then that specific GPIO range is matched 1-1 for the target controller instance. - Fixed a number of review comments from Joe Perches. - Broke out a header file pinctrl.h for the core pin handling stuff that will be reused by other stuff than pinmux. - Fixed some erroneous EXPORT() stuff. - Remove mispatched U300 Kconfig and Makefile entries - Fixed a number of review comments from Stephen Warren, not all of them - still WIP. But I think the new mapping that will specify which function goes to which pin mux controller address 50% of your concerns (else beat me up). ChangeLog v4->v5: - Defined a "position" for each function, so the pin controller now tracks a function in a certain position, and the pinmux maps define what position you want the function in. (Feedback from Stephen Warren and Sascha Hauer). - Since we now need to request a combined function+position from the machine mapping table that connect mux settings to drivers, it was extended with a position field and a name field. The name field is now used if you e.g. need to switch between two mux map settings at runtime. - Switched from a class device to using struct bus_type for this subsystem. Verified sysfs functionality: seems to work fine. (Feedback from Arnd Bergmann and Greg Kroah-Hartman) - Define a per pincontroller list of GPIO ranges from the GPIO pin space that can be handled by the pin controller. These can be added one by one at runtime. (Feedback from Barry Song) - Expanded documentation of regulator_[get|enable|disable|put] semantics. - Fixed a number of review comments from Barry Song. (Thanks!) ChangeLog v5->v6: - Create an abstract pin group concept that can sort pins into named and enumerated groups no matter what the use of these groups may be, one possible usecase is a group of pins being muxed in or so. The intention is however to also use these groups for other pin control activities. - Make it compulsory for pinmux functions to associate with at least one group, so the abstract pin group concept is used to define the groups of pins affected by a pinmux function. The pinmux driver interface has been altered so as to enforce a function to list applicable groups per function. - Provide an optional .group entry in the pinmux machine map so the map can select beteween different available groups to be used with a certain function. - Consequent changes all over the place so that e.g. debugfs present reasonable information about the world. - Drop the per-pin mux (*config) function in the pinmux_ops struct - I was afraid that this would start to be used for things totally unrelated to muxing, we can introduce that to the generic struct pinctrl_ops if needed. I want to keep muxing orthogonal to other pin control subjects and not mix these things up. ChangeLog v6->v7: - Make it possible to have several map entries matching the same device, pin controller and function, but using a different group, and alter the semantics so that pinmux_get() will pick all matching map entries, and store the associated groups in a list. The list will then be iterated over at pinmux_enable()/pinmux_disable() and corresponding driver functions called for each defined group. Notice that you're only allowed to map multiple *groups* to the same { device, pin controller, function } triplet, attempts to map the same device to multiple pin controllers will for example fail. This is hopefully the crucial feature requested by Stephen Warren. - Add a pinmux hogging field to the pinmux mapping entries, and enable the pinmux core to hog pinmux map entries. This currently only works for pinmuxes without assigned devices as it looks now, but with device trees we can look up the corresponding struct device * entries when we register the pinmux driver, and have it hog each pinmux map in turn, for a simple approach to non-dynamic pin muxing. This addresses an issue from Grant Likely that the machine should take care of as much of the pinmux setup as possible, not the devices. By supplying a list of hogs, it can now instruct the core to take care of any static mappings. - Switch pinmux group retrieveal function to grab an array of strings representing the groups rather than an array of unsigned and rewrite accordingly. - Alter debugfs to show the grouplist handled by each pinmux. Also add a list of hogs. - Dynamically allocate a struct pinmux at pinmux_get() and free it at pinmux_put(), then add these to the global list of pinmuxes active as we go along. - Go over the list of pinmux maps at pinmux_get() time and repeatedly apply matches. - Retrieve applicable groups per function from the driver as a string array rather than a unsigned array, then lookup the enumerators. - Make the device to pinmux map a singleton - only allow the mapping table to be registered once and even tag the registration function with __init so it surely won't be abused. - Create a separate debugfs file to view the pinmux map at runtime. - Introduce a spin lock to the pin descriptor struct, lock it when modifying pin status entries. Reported by Stijn Devriendt. - Fix up the documentation after review from Stephen Warren. - Let the GPIO ranges give names as const char * instead of some fixed-length string. - add a function to unregister GPIO ranges to mirror the registration function. - Privatized the struct pinctrl_device and removed it from the API, the drivers do not need to know the members of this struct. It is now in the local header "core.h". - Rename the concept of "anonymous" mux maps to "system" muxes and add convenience macros and documentation. ChangeLog v7->v8: - Delete the leftover pinmux_config() function from the header. - Fix a race condition found by Stijn Devriendt in pin_request() ChangeLog v8->v9: - Drop the bus_type and the sysfs attributes and all, we're not on the clear about how this should be used for e.g. userspace interfaces so let us save this for the future. - Use the right name in MAINTAINERS, PIN CONTROL rather than PINMUX - Don't kfree() the device state holder, let the .remove() callback handle this. - Fix up numerous kerneldoc headers to have one line for the function description and more verbose documentation below the parameters ChangeLog v9->v10: - pinctrl: EXPORT_SYMBOL needs export.h, folded in a patch from Steven Rothwell - fix pinctrl_register error handling, folded in a patch from Axel Lin - Various fixes to documentation text so that it's consistent. - Removed pointless comment from drivers/Kconfig - Removed dependency on SYSFS since we removed the bus in v9. - Renamed hopelessly abbreviated pctldev_* functions to the more verbose pinctrl_dev_* - Drop mutex properly when looking up GPIO ranges - Return NULL instead of ERR_PTR() errors on registration of pin controllers, using cast pointers is fragile. We can live without the detailed error codes for sure. Cc: Stijn Devriendt Cc: Joe Perches Cc: Russell King Acked-by: Grant Likely Acked-by: Stephen Warren Tested-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Linus Walleij --- include/linux/pinctrl/machine.h | 107 ++++++++++++++++++++++++++++++++ include/linux/pinctrl/pinctrl.h | 133 ++++++++++++++++++++++++++++++++++++++++ include/linux/pinctrl/pinmux.h | 117 +++++++++++++++++++++++++++++++++++ 3 files changed, 357 insertions(+) create mode 100644 include/linux/pinctrl/machine.h create mode 100644 include/linux/pinctrl/pinctrl.h create mode 100644 include/linux/pinctrl/pinmux.h (limited to 'include/linux') diff --git a/include/linux/pinctrl/machine.h b/include/linux/pinctrl/machine.h new file mode 100644 index 000000000000..88863531d862 --- /dev/null +++ b/include/linux/pinctrl/machine.h @@ -0,0 +1,107 @@ +/* + * Machine interface for the pinctrl subsystem. + * + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * Based on bits of regulator core, gpio core and clk core + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef __LINUX_PINMUX_MACHINE_H +#define __LINUX_PINMUX_MACHINE_H + +/** + * struct pinmux_map - boards/machines shall provide this map for devices + * @name: the name of this specific map entry for the particular machine. + * This is the second parameter passed to pinmux_get() when you want + * to have several mappings to the same device + * @ctrl_dev: the pin control device to be used by this mapping, may be NULL + * if you provide .ctrl_dev_name instead (this is more common) + * @ctrl_dev_name: the name of the device controlling this specific mapping, + * the name must be the same as in your struct device*, may be NULL if + * you provide .ctrl_dev instead + * @function: a function in the driver to use for this mapping, the driver + * will lookup the function referenced by this ID on the specified + * pin control device + * @group: sometimes a function can map to different pin groups, so this + * selects a certain specific pin group to activate for the function, if + * left as NULL, the first applicable group will be used + * @dev: the device using this specific mapping, may be NULL if you provide + * .dev_name instead (this is more common) + * @dev_name: the name of the device using this specific mapping, the name + * must be the same as in your struct device*, may be NULL if you + * provide .dev instead + * @hog_on_boot: if this is set to true, the pin control subsystem will itself + * hog the mappings as the pinmux device drivers are attached, so this is + * typically used with system maps (mux mappings without an assigned + * device) that you want to get hogged and enabled by default as soon as + * a pinmux device supporting it is registered. These maps will not be + * disabled and put until the system shuts down. + */ +struct pinmux_map { + const char *name; + struct device *ctrl_dev; + const char *ctrl_dev_name; + const char *function; + const char *group; + struct device *dev; + const char *dev_name; + const bool hog_on_boot; +}; + +/* + * Convenience macro to set a simple map from a certain pin controller and a + * certain function to a named device + */ +#define PINMUX_MAP(a, b, c, d) \ + { .name = a, .ctrl_dev_name = b, .function = c, .dev_name = d } + +/* + * Convenience macro to map a system function onto a certain pinctrl device. + * System functions are not assigned to a particular device. + */ +#define PINMUX_MAP_SYS(a, b, c) \ + { .name = a, .ctrl_dev_name = b, .function = c } + +/* + * Convenience macro to map a function onto the primary device pinctrl device + * this is especially helpful on systems that have only one pin controller + * or need to set up a lot of mappings on the primary controller. + */ +#define PINMUX_MAP_PRIMARY(a, b, c) \ + { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b, \ + .dev_name = c } + +/* + * Convenience macro to map a system function onto the primary pinctrl device. + * System functions are not assigned to a particular device. + */ +#define PINMUX_MAP_PRIMARY_SYS(a, b) \ + { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b } + +/* + * Convenience macro to map a system function onto the primary pinctrl device, + * to be hogged by the pinmux core until the system shuts down. + */ +#define PINMUX_MAP_PRIMARY_SYS_HOG(a, b) \ + { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b, \ + .hog_on_boot = true } + + +#ifdef CONFIG_PINMUX + +extern int pinmux_register_mappings(struct pinmux_map const *map, + unsigned num_maps); + +#else + +static inline int pinmux_register_mappings(struct pinmux_map const *map, + unsigned num_maps) +{ + return 0; +} + +#endif /* !CONFIG_PINMUX */ +#endif diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h new file mode 100644 index 000000000000..4f8d2089acce --- /dev/null +++ b/include/linux/pinctrl/pinctrl.h @@ -0,0 +1,133 @@ +/* + * Interface the pinctrl subsystem + * + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * This interface is used in the core to keep track of pins. + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef __LINUX_PINCTRL_PINCTRL_H +#define __LINUX_PINCTRL_PINCTRL_H + +#ifdef CONFIG_PINCTRL + +#include +#include +#include +#include + +struct pinctrl_dev; +struct pinmux_ops; +struct gpio_chip; + +/** + * struct pinctrl_pin_desc - boards/machines provide information on their + * pins, pads or other muxable units in this struct + * @number: unique pin number from the global pin number space + * @name: a name for this pin + */ +struct pinctrl_pin_desc { + unsigned number; + const char *name; +}; + +/* Convenience macro to define a single named or anonymous pin descriptor */ +#define PINCTRL_PIN(a, b) { .number = a, .name = b } +#define PINCTRL_PIN_ANON(a) { .number = a } + +/** + * struct pinctrl_gpio_range - each pin controller can provide subranges of + * the GPIO number space to be handled by the controller + * @node: list node for internal use + * @name: a name for the chip in this range + * @id: an ID number for the chip in this range + * @base: base offset of the GPIO range + * @npins: number of pins in the GPIO range, including the base number + * @gc: an optional pointer to a gpio_chip + */ +struct pinctrl_gpio_range { + struct list_head node; + const char *name; + unsigned int id; + unsigned int base; + unsigned int npins; + struct gpio_chip *gc; +}; + +/** + * struct pinctrl_ops - global pin control operations, to be implemented by + * pin controller drivers. + * @list_groups: list the number of selectable named groups available + * in this pinmux driver, the core will begin on 0 and call this + * repeatedly as long as it returns >= 0 to enumerate the groups + * @get_group_name: return the group name of the pin group + * @get_group_pins: return an array of pins corresponding to a certain + * group selector @pins, and the size of the array in @num_pins + * @pin_dbg_show: optional debugfs display hook that will provide per-device + * info for a certain pin in debugfs + */ +struct pinctrl_ops { + int (*list_groups) (struct pinctrl_dev *pctldev, unsigned selector); + const char *(*get_group_name) (struct pinctrl_dev *pctldev, + unsigned selector); + int (*get_group_pins) (struct pinctrl_dev *pctldev, + unsigned selector, + unsigned ** const pins, + unsigned * const num_pins); + void (*pin_dbg_show) (struct pinctrl_dev *pctldev, struct seq_file *s, + unsigned offset); +}; + +/** + * struct pinctrl_desc - pin controller descriptor, register this to pin + * control subsystem + * @name: name for the pin controller + * @pins: an array of pin descriptors describing all the pins handled by + * this pin controller + * @npins: number of descriptors in the array, usually just ARRAY_SIZE() + * of the pins field above + * @maxpin: since pin spaces may be sparse, there can he "holes" in the + * pin range, this attribute gives the maximum pin number in the + * total range. This should not be lower than npins for example, + * but may be equal to npins if you have no holes in the pin range. + * @pctlops: pin control operation vtable, to support global concepts like + * grouping of pins, this is optional. + * @pmxops: pinmux operation vtable, if you support pinmuxing in your driver + * @owner: module providing the pin controller, used for refcounting + */ +struct pinctrl_desc { + const char *name; + struct pinctrl_pin_desc const *pins; + unsigned int npins; + unsigned int maxpin; + struct pinctrl_ops *pctlops; + struct pinmux_ops *pmxops; + struct module *owner; +}; + +/* External interface to pin controller */ +extern struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc, + struct device *dev, void *driver_data); +extern void pinctrl_unregister(struct pinctrl_dev *pctldev); +extern bool pin_is_valid(struct pinctrl_dev *pctldev, int pin); +extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range); +extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range); +extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); +extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); +#else + + +/* Sufficiently stupid default function when pinctrl is not in use */ +static inline bool pin_is_valid(struct pinctrl_dev *pctldev, int pin) +{ + return pin >= 0; +} + +#endif /* !CONFIG_PINCTRL */ + +#endif /* __LINUX_PINCTRL_PINCTRL_H */ diff --git a/include/linux/pinctrl/pinmux.h b/include/linux/pinctrl/pinmux.h new file mode 100644 index 000000000000..3c430e797efc --- /dev/null +++ b/include/linux/pinctrl/pinmux.h @@ -0,0 +1,117 @@ +/* + * Interface the pinmux subsystem + * + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * Based on bits of regulator core, gpio core and clk core + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef __LINUX_PINCTRL_PINMUX_H +#define __LINUX_PINCTRL_PINMUX_H + +#include +#include +#include "pinctrl.h" + +/* This struct is private to the core and should be regarded as a cookie */ +struct pinmux; + +#ifdef CONFIG_PINMUX + +struct pinctrl_dev; + +/** + * struct pinmux_ops - pinmux operations, to be implemented by pin controller + * drivers that support pinmuxing + * @request: called by the core to see if a certain pin can be made available + * available for muxing. This is called by the core to acquire the pins + * before selecting any actual mux setting across a function. The driver + * is allowed to answer "no" by returning a negative error code + * @free: the reverse function of the request() callback, frees a pin after + * being requested + * @list_functions: list the number of selectable named functions available + * in this pinmux driver, the core will begin on 0 and call this + * repeatedly as long as it returns >= 0 to enumerate mux settings + * @get_function_name: return the function name of the muxing selector, + * called by the core to figure out which mux setting it shall map a + * certain device to + * @get_function_groups: return an array of groups names (in turn + * referencing pins) connected to a certain function selector. The group + * name can be used with the generic @pinctrl_ops to retrieve the + * actual pins affected. The applicable groups will be returned in + * @groups and the number of groups in @num_groups + * @enable: enable a certain muxing function with a certain pin group. The + * driver does not need to figure out whether enabling this function + * conflicts some other use of the pins in that group, such collisions + * are handled by the pinmux subsystem. The @func_selector selects a + * certain function whereas @group_selector selects a certain set of pins + * to be used. On simple controllers the latter argument may be ignored + * @disable: disable a certain muxing selector with a certain pin group + * @gpio_request_enable: requests and enables GPIO on a certain pin. + * Implement this only if you can mux every pin individually as GPIO. The + * affected GPIO range is passed along with an offset into that + * specific GPIO range - function selectors and pin groups are orthogonal + * to this, the core will however make sure the pins do not collide + */ +struct pinmux_ops { + int (*request) (struct pinctrl_dev *pctldev, unsigned offset); + int (*free) (struct pinctrl_dev *pctldev, unsigned offset); + int (*list_functions) (struct pinctrl_dev *pctldev, unsigned selector); + const char *(*get_function_name) (struct pinctrl_dev *pctldev, + unsigned selector); + int (*get_function_groups) (struct pinctrl_dev *pctldev, + unsigned selector, + const char * const **groups, + unsigned * const num_groups); + int (*enable) (struct pinctrl_dev *pctldev, unsigned func_selector, + unsigned group_selector); + void (*disable) (struct pinctrl_dev *pctldev, unsigned func_selector, + unsigned group_selector); + int (*gpio_request_enable) (struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset); +}; + +/* External interface to pinmux */ +extern int pinmux_request_gpio(unsigned gpio); +extern void pinmux_free_gpio(unsigned gpio); +extern struct pinmux * __must_check pinmux_get(struct device *dev, const char *name); +extern void pinmux_put(struct pinmux *pmx); +extern int pinmux_enable(struct pinmux *pmx); +extern void pinmux_disable(struct pinmux *pmx); + +#else /* !CONFIG_PINMUX */ + +static inline int pinmux_request_gpio(unsigned gpio) +{ + return 0; +} + +static inline void pinmux_free_gpio(unsigned gpio) +{ +} + +static inline struct pinmux * __must_check pinmux_get(struct device *dev, const char *name) +{ + return NULL; +} + +static inline void pinmux_put(struct pinmux *pmx) +{ +} + +static inline int pinmux_enable(struct pinmux *pmx) +{ + return 0; +} + +static inline void pinmux_disable(struct pinmux *pmx) +{ +} + +#endif /* CONFIG_PINMUX */ + +#endif /* __LINUX_PINCTRL_PINMUX_H */ -- cgit v1.2.2 From 196a57c2749119be4732cc2b2adb8aafcb4fcb14 Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Thu, 13 Oct 2011 12:56:32 +0100 Subject: ARM: 7131/1: clkdev: Add Common Macro for clk_lookup Added a standardized macro CLKDEV_INIT which can used across all the platforms to support clkdev Suggested-by: Russell King Acked-by: H Hartley Sweeten Acked-by: Kukjin Kim Signed-off-by: Padmavathi Venna Signed-off-by: Rajeshwari Shinde Signed-off-by: Russell King --- include/linux/clkdev.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h index 457bcb0a310a..d9a4fd028c9d 100644 --- a/include/linux/clkdev.h +++ b/include/linux/clkdev.h @@ -24,6 +24,13 @@ struct clk_lookup { struct clk *clk; }; +#define CLKDEV_INIT(d, n, c) \ + { \ + .dev_id = d, \ + .con_id = n, \ + .clk = c, \ + } + struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...); -- cgit v1.2.2 From 012a8ff577f95211c6ffd3b77a94c34ebae009b6 Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Thu, 2 Jun 2011 09:01:33 -0700 Subject: IB/mlx4: Add support for XRC domains Support creating and destroying XRC domains. Any sharing of the XRCD is managed above the low-level driver. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 53ef894bfa05..6a3478d0b330 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -61,6 +61,7 @@ enum { MLX4_DEV_CAP_FLAG_RC = 1LL << 0, MLX4_DEV_CAP_FLAG_UC = 1LL << 1, MLX4_DEV_CAP_FLAG_UD = 1LL << 2, + MLX4_DEV_CAP_FLAG_XRC = 1LL << 3, MLX4_DEV_CAP_FLAG_SRQ = 1LL << 6, MLX4_DEV_CAP_FLAG_IPOIB_CSUM = 1LL << 7, MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR = 1LL << 8, @@ -256,6 +257,8 @@ struct mlx4_caps { int num_qp_per_mgm; int num_pds; int reserved_pds; + int max_xrcds; + int reserved_xrcds; int mtt_entry_sz; u32 max_msg_sz; u32 page_size_cap; @@ -499,6 +502,8 @@ static inline void *mlx4_buf_offset(struct mlx4_buf *buf, int offset) int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn); void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn); +int mlx4_xrcd_alloc(struct mlx4_dev *dev, u32 *xrcdn); +void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn); int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar); void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar); -- cgit v1.2.2 From 18abd5ea571608a7c726fc56e21d3e31f9febfd0 Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Thu, 2 Jun 2011 10:43:26 -0700 Subject: IB/mlx4: Add support for XRC SRQs Allow the user to create XRC SRQs. This patch is based on a patch from Jack Morgenstrein . Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 6a3478d0b330..9ab0f6a80d60 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -543,8 +543,8 @@ void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt); int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp); void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp); -int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt, - u64 db_rec, struct mlx4_srq *srq); +int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, u32 cqn, u16 xrcdn, + struct mlx4_mtt *mtt, u64 db_rec, struct mlx4_srq *srq); void mlx4_srq_free(struct mlx4_dev *dev, struct mlx4_srq *srq); int mlx4_srq_arm(struct mlx4_dev *dev, struct mlx4_srq *srq, int limit_watermark); int mlx4_srq_query(struct mlx4_dev *dev, struct mlx4_srq *srq, int *limit_watermark); -- cgit v1.2.2 From 0a1405da9952a72dd587829a3321695adde7dca1 Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Thu, 2 Jun 2011 11:32:15 -0700 Subject: IB/mlx4: Add support for XRC QPs Support the creation of XRC INI and TGT QPs. To handle the case where a CQ or PD is not provided, we allocate them internally with the xrcd. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier --- include/linux/mlx4/qp.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 4001c8249dbb..48cc4cb97858 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -75,6 +75,7 @@ enum { MLX4_QP_ST_UC = 0x1, MLX4_QP_ST_RD = 0x2, MLX4_QP_ST_UD = 0x3, + MLX4_QP_ST_XRC = 0x6, MLX4_QP_ST_MLX = 0x7 }; @@ -137,7 +138,7 @@ struct mlx4_qp_context { __be32 ssn; __be32 params2; __be32 rnr_nextrecvpsn; - __be32 srcd; + __be32 xrcd; __be32 cqn_recv; __be64 db_rec_addr; __be32 qkey; -- cgit v1.2.2 From b8a56e17e18cca2402b390c10b8d7f3cd0f6265b Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Fri, 30 Sep 2011 20:07:38 +0900 Subject: usb: gadget: r8a66597-udc: add support for SUDMAC SH7757 has a USB function with internal DMA controller (SUDMAC). This patch supports the SUDMAC. The SUDMAC is incompatible with general-purpose DMAC. So, it doesn't use dmaengine. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- include/linux/usb/r8a66597.h | 60 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/r8a66597.h b/include/linux/usb/r8a66597.h index b6b8660d0c68..55805f9dcf21 100644 --- a/include/linux/usb/r8a66597.h +++ b/include/linux/usb/r8a66597.h @@ -48,6 +48,9 @@ struct r8a66597_platdata { /* (external controller only) set one = WR0_N shorted to WR1_N */ unsigned wr0_shorted_to_wr1:1; + + /* set one = using SUDMAC */ + unsigned sudmac:1; }; /* Register definitions */ @@ -417,5 +420,62 @@ struct r8a66597_platdata { #define USBSPD 0x00C0 #define RTPORT 0x0001 +/* SUDMAC registers */ +#define CH0CFG 0x00 +#define CH1CFG 0x04 +#define CH0BA 0x10 +#define CH1BA 0x14 +#define CH0BBC 0x18 +#define CH1BBC 0x1C +#define CH0CA 0x20 +#define CH1CA 0x24 +#define CH0CBC 0x28 +#define CH1CBC 0x2C +#define CH0DEN 0x30 +#define CH1DEN 0x34 +#define DSTSCLR 0x38 +#define DBUFCTRL 0x3C +#define DINTCTRL 0x40 +#define DINTSTS 0x44 +#define DINTSTSCLR 0x48 +#define CH0SHCTRL 0x50 +#define CH1SHCTRL 0x54 + +/* SUDMAC Configuration Registers */ +#define SENDBUFM 0x1000 /* b12: Transmit Buffer Mode */ +#define RCVENDM 0x0100 /* b8: Receive Data Transfer End Mode */ +#define LBA_WAIT 0x0030 /* b5-4: Local Bus Access Wait */ + +/* DMA Enable Registers */ +#define DEN 0x0001 /* b1: DMA Transfer Enable */ + +/* DMA Status Clear Register */ +#define CH1STCLR 0x0002 /* b2: Ch1 DMA Status Clear */ +#define CH0STCLR 0x0001 /* b1: Ch0 DMA Status Clear */ + +/* DMA Buffer Control Register */ +#define CH1BUFW 0x0200 /* b9: Ch1 DMA Buffer Data Transfer Enable */ +#define CH0BUFW 0x0100 /* b8: Ch0 DMA Buffer Data Transfer Enable */ +#define CH1BUFS 0x0002 /* b2: Ch1 DMA Buffer Data Status */ +#define CH0BUFS 0x0001 /* b1: Ch0 DMA Buffer Data Status */ + +/* DMA Interrupt Control Register */ +#define CH1ERRE 0x0200 /* b9: Ch1 SHwy Res Err Detect Int Enable */ +#define CH0ERRE 0x0100 /* b8: Ch0 SHwy Res Err Detect Int Enable */ +#define CH1ENDE 0x0002 /* b2: Ch1 DMA Transfer End Int Enable */ +#define CH0ENDE 0x0001 /* b1: Ch0 DMA Transfer End Int Enable */ + +/* DMA Interrupt Status Register */ +#define CH1ERRS 0x0200 /* b9: Ch1 SHwy Res Err Detect Int Status */ +#define CH0ERRS 0x0100 /* b8: Ch0 SHwy Res Err Detect Int Status */ +#define CH1ENDS 0x0002 /* b2: Ch1 DMA Transfer End Int Status */ +#define CH0ENDS 0x0001 /* b1: Ch0 DMA Transfer End Int Status */ + +/* DMA Interrupt Status Clear Register */ +#define CH1ERRC 0x0200 /* b9: Ch1 SHwy Res Err Detect Int Stat Clear */ +#define CH0ERRC 0x0100 /* b8: Ch0 SHwy Res Err Detect Int Stat Clear */ +#define CH1ENDC 0x0002 /* b2: Ch1 DMA Transfer End Int Stat Clear */ +#define CH0ENDC 0x0001 /* b1: Ch0 DMA Transfer End Int Stat Clear */ + #endif /* __LINUX_USB_R8A66597_H */ -- cgit v1.2.2 From 089b837a39552ee49a4ea4c188e8c3517473f10c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 10 Oct 2011 09:43:44 +0300 Subject: usb: gadget: fix typo for default U1/U2 exit latencies s/DEFULT/DEFAULT/, no functional changes. Signed-off-by: Felipe Balbi --- include/linux/usb/gadget.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 087f4b931833..1d3a67523ffc 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -437,9 +437,9 @@ static inline void usb_ep_fifo_flush(struct usb_ep *ep) struct usb_dcd_config_params { __u8 bU1devExitLat; /* U1 Device exit Latency */ -#define USB_DEFULT_U1_DEV_EXIT_LAT 0x01 /* Less then 1 microsec */ +#define USB_DEFAULT_U1_DEV_EXIT_LAT 0x01 /* Less then 1 microsec */ __le16 bU2DevExitLat; /* U2 Device exit Latency */ -#define USB_DEFULT_U2_DEV_EXIT_LAT 0x1F4 /* Less then 500 microsec */ +#define USB_DEFAULT_U2_DEV_EXIT_LAT 0x1F4 /* Less then 500 microsec */ }; -- cgit v1.2.2 From 11935de5579a5d01b3c89d69b4fc7a38b4dd8eae Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 10 Oct 2011 22:01:28 -0700 Subject: usb: gadget: renesas_usbhs: change usbhsc_bus_ctrl() to usbsc_set_buswait() renesas_usbhs will have register DVSTCTR control function for HOST support. This patch changes usbhsc_bus_ctrl() to usbsc_set_buswait(), to remove DVSTCTR access from it, Signed-off-by: Kuninori Morimoto Signed-off-by: Felipe Balbi --- include/linux/usb/renesas_usbhs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h index 8977431259c6..959af02d3af6 100644 --- a/include/linux/usb/renesas_usbhs.h +++ b/include/linux/usb/renesas_usbhs.h @@ -101,6 +101,8 @@ struct renesas_usbhs_driver_param { * option: * * for BUSWAIT :: BWAIT + * see + * renesas_usbhs/common.c :: usbhsc_set_buswait() * */ int buswait_bwait; -- cgit v1.2.2 From 258485d9904703c4cb3a2b3ee38fe2a0cbf01f48 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 10 Oct 2011 22:01:40 -0700 Subject: usb: gadget: renesas_usbhs: add bus control functions this patch add DVSTCTR control function for HOST support Signed-off-by: Kuninori Morimoto Signed-off-by: Felipe Balbi --- include/linux/usb/renesas_usbhs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h index 959af02d3af6..040d8bb2b5a2 100644 --- a/include/linux/usb/renesas_usbhs.h +++ b/include/linux/usb/renesas_usbhs.h @@ -82,6 +82,13 @@ struct renesas_usbhs_platform_callback { * get VBUS status function. */ int (*get_vbus)(struct platform_device *pdev); + + /* + * option: + * + * VBUS control is needed for Host + */ + int (*set_vbus)(struct platform_device *pdev, int enable); }; /* -- cgit v1.2.2 From f427eb64f4c5433a91da5eb139970dd5cbad9082 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 10 Oct 2011 22:06:12 -0700 Subject: usb: gadget: renesas_usbhs: support otg pin control some renesas_usbhs device is supporting OTG external device interface. In that device, it is necessary to control PWEN/EXTLP on DVSTCTR. This patch support it. But renesas_usbhs driver doesn't have OTG support for now. Signed-off-by: Kuninori Morimoto Signed-off-by: Felipe Balbi --- include/linux/usb/renesas_usbhs.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h index 040d8bb2b5a2..e5a40c318548 100644 --- a/include/linux/usb/renesas_usbhs.h +++ b/include/linux/usb/renesas_usbhs.h @@ -136,6 +136,11 @@ struct renesas_usbhs_driver_param { * pio <--> dma border. */ int pio_dma_border; /* default is 64byte */ + + /* + * option: + */ + u32 has_otg:1; /* for controlling PWEN/EXTLP */ }; /* -- cgit v1.2.2 From dde34cc5019b51088c18ca789d4b1a20cf9bc617 Mon Sep 17 00:00:00 2001 From: Neil Zhang Date: Wed, 12 Oct 2011 16:49:24 +0800 Subject: usb: gadget: mv_udc: refine the driver structure This patch do the following things: 1. Add header and Copyright for marvell usb driver. 2. Add mv_usb.h in include/linux/platform_data, make the driver fits all the marvell platform using the same ChipIdea usb ip. 3. Some SOC may has mutiple clock sources, so let me define it in mv_usb_platform_data and give two helper functions named udc_clock_enable/udc_clock_disable to deal with the clocks. 4. Different SOCs will have some difference in PHY initialization, so we will remove file mv_udc_phy.c and add two funtions in mv_usb_platform_data, let the platform relative driver to realize it. 5. Rewrite probe function according to the modification list above. Find it will kernel panic when probe failed. The root cause is as follows: When probe failed, the error handle may call device_unregister() which in return will call gadget_release.In current code, gadget_release have two issues: 1: the_controller is a NULL pointer. 2: if we free udc here, then the following code in probe will access NULL pointer. Signed-off-by: Neil Zhang Signed-off-by: Felipe Balbi --- include/linux/platform_data/mv_usb.h | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 include/linux/platform_data/mv_usb.h (limited to 'include/linux') diff --git a/include/linux/platform_data/mv_usb.h b/include/linux/platform_data/mv_usb.h new file mode 100644 index 000000000000..e9d9149ddf38 --- /dev/null +++ b/include/linux/platform_data/mv_usb.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __MV_PLATFORM_USB_H +#define __MV_PLATFORM_USB_H + +enum pxa_ehci_type { + EHCI_UNDEFINED = 0, + PXA_U2OEHCI, /* pxa 168, 9xx */ + PXA_SPH, /* pxa 168, 9xx SPH */ + MMP3_HSIC, /* mmp3 hsic */ + MMP3_FSIC, /* mmp3 fsic */ +}; + +enum { + MV_USB_MODE_OTG, + MV_USB_MODE_HOST, +}; + +enum { + VBUS_LOW = 0, + VBUS_HIGH = 1 << 0, +}; + +struct mv_usb_addon_irq { + unsigned int irq; + int (*poll)(void); +}; + +struct mv_usb_platform_data { + unsigned int clknum; + char **clkname; + struct mv_usb_addon_irq *id; /* Only valid for OTG. ID pin change*/ + struct mv_usb_addon_irq *vbus; /* valid for OTG/UDC. VBUS change*/ + + /* only valid for HCD. OTG or Host only*/ + unsigned int mode; + + int (*phy_init)(unsigned int regbase); + void (*phy_deinit)(unsigned int regbase); + int (*set_vbus)(unsigned int vbus); +}; + +#endif -- cgit v1.2.2 From 36a0904ea0a657567122edebb95eab5f1620a5eb Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Mon, 10 Oct 2011 21:49:35 +0530 Subject: dt: add empty dt helpers for non-dt build Add empty of_device_is_compatible() and of_parse_phandle() for non-dt builds to work. Signed-off-by: Rajendra Nayak Signed-off-by: Grant Likely --- include/linux/of.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 1cc9930ba06a..736b7477beb2 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -255,6 +255,12 @@ static inline bool of_have_populated_dt(void) #define for_each_child_of_node(parent, child) \ while (0) +static inline int of_device_is_compatible(const struct device_node *device, + const char *name) +{ + return 0; +} + static inline struct property *of_find_property(const struct device_node *np, const char *name, int *lenp) @@ -289,6 +295,13 @@ static inline int of_property_read_u64(const struct device_node *np, return -ENOSYS; } +static inline struct device_node *of_parse_phandle(struct device_node *np, + const char *phandle_name, + int index) +{ + return NULL; +} + #define of_match_ptr(_ptr) NULL #endif /* CONFIG_OF */ -- cgit v1.2.2 From 87fb4b7b533073eeeaed0b6bf7c2328995f6c075 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 13 Oct 2011 07:28:54 +0000 Subject: net: more accurate skb truesize skb truesize currently accounts for sk_buff struct and part of skb head. kmalloc() roundings are also ignored. Considering that skb_shared_info is larger than sk_buff, its time to take it into account for better memory accounting. This patch introduces SKB_TRUESIZE(X) macro to centralize various assumptions into a single place. At skb alloc phase, we put skb_shared_info struct at the exact end of skb head, to allow a better use of memory (lowering number of reallocations), since kmalloc() gives us power-of-two memory blocks. Unless SLUB/SLUB debug is active, both skb->head and skb_shared_info are aligned to cache lines, as before. Note: This patch might trigger performance regressions because of misconfigured protocol stacks, hitting per socket or global memory limits that were previously not reached. But its a necessary step for a more accurate memory accounting. Signed-off-by: Eric Dumazet CC: Andi Kleen CC: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/skbuff.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ac6b05a325cc..64f86951ef74 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -46,6 +46,11 @@ #define SKB_MAX_HEAD(X) (SKB_MAX_ORDER((X), 0)) #define SKB_MAX_ALLOC (SKB_MAX_ORDER(0, 2)) +/* return minimum truesize of one skb containing X bytes of data */ +#define SKB_TRUESIZE(X) ((X) + \ + SKB_DATA_ALIGN(sizeof(struct sk_buff)) + \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) + /* A. Checksumming of received packets by device. * * NONE: device failed to checksum this packet. -- cgit v1.2.2 From 937383a58e47154d3098783df739e8fa8984a434 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 5 Oct 2011 22:28:05 +0100 Subject: PCI: Add Solarflare vendor ID and SFC4000 device IDs These will be shared between the sfc driver and a PCI quirk. Signed-off-by: Ben Hutchings Signed-off-by: Jesse Barnes --- include/linux/pci_ids.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index ae96bbe54518..1679ff6931f9 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2302,6 +2302,11 @@ #define PCI_DEVICE_ID_RENESAS_SH7785 0x0007 #define PCI_DEVICE_ID_RENESAS_SH7786 0x0010 +#define PCI_VENDOR_ID_SOLARFLARE 0x1924 +#define PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0 0x0703 +#define PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1 0x6703 +#define PCI_DEVICE_ID_SOLARFLARE_SFC4000B 0x0710 + #define PCI_VENDOR_ID_TDI 0x192E #define PCI_DEVICE_ID_TDI_EHCI 0x0101 -- cgit v1.2.2 From e24442733ee486c99d03fe2ecd98924d1bc14c51 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Sun, 11 Sep 2011 14:08:38 -0300 Subject: PCI: Make pci_setup_bridge() non-static for use by arch code The "powernv" platform of the powerpc architecture needs to assign PCI resources using a specific algorithm to fit some HW constraints of the IBM "IODA" architecture (related to the ability to create error handling domains that encompass specific segments of MMIO space). For doing so, it wants to call pci_setup_bridge() from architecture specific resource management in order to configure bridges after all resources have been assigned. So make it non-static. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Jesse Barnes --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 9fc01226055b..4ff6d4e9455c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -955,6 +955,7 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), int pci_cfg_space_size_ext(struct pci_dev *dev); int pci_cfg_space_size(struct pci_dev *dev); unsigned char pci_bus_max_busnr(struct pci_bus *bus); +void pci_setup_bridge(struct pci_bus *bus); #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) -- cgit v1.2.2 From 379021d5c0899fcf9410cae4ca7a59a5a94ca769 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 3 Oct 2011 23:16:33 +0200 Subject: PCI / PM: Extend PME polling to all PCI devices The land of PCI power management is a land of sorrow and ugliness, especially in the area of signaling events by devices. There are devices that set their PME Status bits, but don't really bother to send a PME message or assert PME#. There are hardware vendors who don't connect PME# lines to the system core logic (they know who they are). There are PCI Express Root Ports that don't bother to trigger interrupts when they receive PME messages from the devices below. There are ACPI BIOSes that forget to provide _PRW methods for devices capable of signaling wakeup. Finally, there are BIOSes that do provide _PRW methods for such devices, but then don't bother to call Notify() for those devices from the corresponding _Lxx/_Exx GPE-handling methods. In all of these cases the kernel doesn't have a chance to receive a proper notification that it should wake up a device, so devices stay in low-power states forever. Worse yet, in some cases they continuously send PME Messages that are silently ignored, because the kernel simply doesn't know that it should clear the device's PME Status bit. This problem was first observed for "parallel" (non-Express) PCI devices on add-on cards and Matthew Garrett addressed it by adding code that polls PME Status bits of such devices, if they are enabled to signal PME, to the kernel. Recently, however, it has turned out that PCI Express devices are also affected by this issue and that it is not limited to add-on devices, so it seems necessary to extend the PME polling to all PCI devices, including PCI Express and planar ones. Still, it would be wasteful to poll the PME Status bits of devices that are known to receive proper PME notifications, so make the kernel (1) poll the PME Status bits of all PCI and PCIe devices enabled to signal PME and (2) disable the PME Status polling for devices for which correct PME notifications are received. Tested-by: Sarah Sharp Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 4ff6d4e9455c..176c981a90d4 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -273,6 +273,7 @@ struct pci_dev { unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ unsigned int pme_interrupt:1; + unsigned int pme_poll:1; /* Poll device's PME status bit */ unsigned int d1_support:1; /* Low power state D1 is supported */ unsigned int d2_support:1; /* Low power state D2 is supported */ unsigned int no_d1d2:1; /* Only allow D0 and D3 */ -- cgit v1.2.2 From db3c33c6d3fa04ee46b491e9d75d0d3b4798d074 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 27 Sep 2011 15:57:13 +0200 Subject: PCI: Move ATS implementation into own file ATS does not depend on IOV support, so move the code into its own file. This file will also include support for the PRI and PASID capabilities later. Also give ATS its own Kconfig variable to allow selecting it without IOV support. Reviewed-by: Bjorn Helgaas Signed-off-by: Joerg Roedel Signed-off-by: Jesse Barnes --- include/linux/pci-ats.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 655824fa4c76..4eab42bf2af9 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -1,6 +1,8 @@ #ifndef LINUX_PCI_ATS_H #define LINUX_PCI_ATS_H +#include + /* Address Translation Service */ struct pci_ats { int pos; /* capability position */ -- cgit v1.2.2 From c320b976d7837c561ce4aa49dfe0a64f0e527ce4 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 27 Sep 2011 15:57:15 +0200 Subject: PCI: Add implementation for PRI capability Implement the necessary functions to handle PRI capabilities on PCIe devices. With PRI devices behind an IOMMU can signal page fault conditions to software and recover from such faults. Reviewed-by: Bjorn Helgaas Signed-off-by: Joerg Roedel Signed-off-by: Jesse Barnes --- include/linux/pci-ats.h | 42 ++++++++++++++++++++++++++++++++++++++++++ include/linux/pci_regs.h | 12 ++++++++++++ 2 files changed, 54 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 4eab42bf2af9..071395251abf 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -17,6 +17,7 @@ struct pci_ats { extern int pci_enable_ats(struct pci_dev *dev, int ps); extern void pci_disable_ats(struct pci_dev *dev); extern int pci_ats_queue_depth(struct pci_dev *dev); + /** * pci_ats_enabled - query the ATS status * @dev: the PCI device @@ -51,4 +52,45 @@ static inline int pci_ats_enabled(struct pci_dev *dev) #endif /* CONFIG_PCI_IOV */ +#ifdef CONFIG_PCI_PRI + +extern int pci_enable_pri(struct pci_dev *pdev, u32 reqs); +extern void pci_disable_pri(struct pci_dev *pdev); +extern bool pci_pri_enabled(struct pci_dev *pdev); +extern int pci_reset_pri(struct pci_dev *pdev); +extern bool pci_pri_stopped(struct pci_dev *pdev); +extern int pci_pri_status(struct pci_dev *pdev); + +#else /* CONFIG_PCI_PRI */ + +static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs) +{ + return -ENODEV; +} + +static inline void pci_disable_pri(struct pci_dev *pdev) +{ +} + +static inline bool pci_pri_enabled(struct pci_dev *pdev) +{ + return false; +} + +static inline int pci_reset_pri(struct pci_dev *pdev) +{ + return -ENODEV; +} + +static inline bool pci_pri_stopped(struct pci_dev *pdev) +{ + return true; +} + +static inline int pci_pri_status(struct pci_dev *pdev) +{ + return -ENODEV; +} +#endif /* CONFIG_PCI_PRI */ + #endif /* LINUX_PCI_ATS_H*/ diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index e8840964aca1..7fc32aff94d2 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -663,6 +663,18 @@ #define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */ #define PCI_ATS_MIN_STU 12 /* shift of minimum STU block */ +/* Page Request Interface */ +#define PCI_PRI_CAP 0x13 /* PRI capability ID */ +#define PCI_PRI_CONTROL_OFF 0x04 /* Offset of control register */ +#define PCI_PRI_STATUS_OFF 0x06 /* Offset of status register */ +#define PCI_PRI_ENABLE 0x0001 /* Enable mask */ +#define PCI_PRI_RESET 0x0002 /* Reset bit mask */ +#define PCI_PRI_STATUS_RF 0x0001 /* Request Failure */ +#define PCI_PRI_STATUS_UPRGI 0x0002 /* Unexpected PRG index */ +#define PCI_PRI_STATUS_STOPPED 0x0100 /* PRI Stopped */ +#define PCI_PRI_MAX_REQ_OFF 0x08 /* Cap offset for max reqs supported */ +#define PCI_PRI_ALLOC_REQ_OFF 0x0c /* Cap offset for max reqs allowed */ + /* Single Root I/O Virtualization */ #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ #define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ -- cgit v1.2.2 From 086ac11f6435c9dc2fe5025fc8ea3a1dbca273d6 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 27 Sep 2011 15:57:16 +0200 Subject: PCI: Add support for PASID capability Devices supporting Process Address Space Identifiers (PASIDs) can use an IOMMU to access multiple IO address spaces at the same time. A PCIe device indicates support for this feature by implementing the PASID capability. This patch adds support for the capability to the Linux kernel. Reviewed-by: Bjorn Helgaas Signed-off-by: Joerg Roedel Signed-off-by: Jesse Barnes --- include/linux/pci-ats.h | 31 +++++++++++++++++++++++++++++++ include/linux/pci_regs.h | 8 ++++++++ 2 files changed, 39 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 071395251abf..e3d0b3890249 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -93,4 +93,35 @@ static inline int pci_pri_status(struct pci_dev *pdev) } #endif /* CONFIG_PCI_PRI */ +#ifdef CONFIG_PCI_PASID + +extern int pci_enable_pasid(struct pci_dev *pdev, int features); +extern void pci_disable_pasid(struct pci_dev *pdev); +extern int pci_pasid_features(struct pci_dev *pdev); +extern int pci_max_pasids(struct pci_dev *pdev); + +#else /* CONFIG_PCI_PASID */ + +static inline int pci_enable_pasid(struct pci_dev *pdev, int features) +{ + return -EINVAL; +} + +static inline void pci_disable_pasid(struct pci_dev *pdev) +{ +} + +static inline int pci_pasid_features(struct pci_dev *pdev) +{ + return -EINVAL; +} + +static inline int pci_max_pasids(struct pci_dev *pdev) +{ + return -EINVAL; +} + +#endif /* CONFIG_PCI_PASID */ + + #endif /* LINUX_PCI_ATS_H*/ diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index 7fc32aff94d2..b5d9657f3100 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -675,6 +675,14 @@ #define PCI_PRI_MAX_REQ_OFF 0x08 /* Cap offset for max reqs supported */ #define PCI_PRI_ALLOC_REQ_OFF 0x0c /* Cap offset for max reqs allowed */ +/* PASID capability */ +#define PCI_PASID_CAP 0x1b /* PASID capability ID */ +#define PCI_PASID_CAP_OFF 0x04 /* PASID feature register */ +#define PCI_PASID_CONTROL_OFF 0x06 /* PASID control register */ +#define PCI_PASID_ENABLE 0x01 /* Enable/Supported bit */ +#define PCI_PASID_EXEC 0x02 /* Exec permissions Enable/Supported */ +#define PCI_PASID_PRIV 0x04 /* Priviledge Mode Enable/Support */ + /* Single Root I/O Virtualization */ #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ #define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ -- cgit v1.2.2 From bb6e753e95a968fab0e366caace78fb2c08cc239 Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Thu, 13 Oct 2011 16:30:39 +0200 Subject: nl80211: Add sta_flags to the station info Reuse the already existing struct nl80211_sta_flag_update to specify both, a flag mask and the flag set itself. This means nl80211_sta_flag_update is now used for setting station flags and also for getting station flags. Signed-off-by: Helmut Schaa Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 9d797f253d8e..8049bf77d799 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1548,6 +1548,7 @@ enum nl80211_sta_bss_param { * @NL80211_STA_INFO_BSS_PARAM: current station's view of BSS, nested attribute * containing info as possible, see &enum nl80211_sta_bss_param * @NL80211_STA_INFO_CONNECTED_TIME: time since the station is last connected + * @NL80211_STA_INFO_STA_FLAGS: Contains a struct nl80211_sta_flag_update. * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute */ @@ -1569,6 +1570,7 @@ enum nl80211_sta_info { NL80211_STA_INFO_RX_BITRATE, NL80211_STA_INFO_BSS_PARAM, NL80211_STA_INFO_CONNECTED_TIME, + NL80211_STA_INFO_STA_FLAGS, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, -- cgit v1.2.2 From 0151546fb34e92494acd65ed84a603c2a4a90168 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 14 Oct 2011 13:36:04 +0100 Subject: regulator: Constify constraints name There's no need for the API to modify it and having it const makes it easier to use with random strings the board code has. Signed-off-by: Mark Brown --- include/linux/regulator/machine.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index ce3127a75c88..f3f13fd5868f 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -95,7 +95,7 @@ struct regulator_state { */ struct regulation_constraints { - char *name; + const char *name; /* voltage output range (inclusive) - for voltage control */ int min_uV; -- cgit v1.2.2 From 5f8444a3fa617076f8da51a3e8ecce01a5d7f738 Mon Sep 17 00:00:00 2001 From: Greg Rose Date: Sat, 8 Oct 2011 03:05:24 +0000 Subject: if_link: Add additional parameter to IFLA_VF_INFO for spoof checking Add configuration setting for drivers to turn spoof checking on or off for discrete VFs. v2 - Fix indentation problem, wrap the ifla_vf_info structure in #ifdef __KERNEL__ to prevent user space from accessing and change function paramater for the spoof check setting netdev op from u8 to bool. v3 - Preset spoof check setting to -1 so that user space tools such as ip can detect that the driver didn't report a spoofcheck setting. Prevents incorrect display of spoof check settings for drivers that don't report it. Signed-off-by: Greg Rose Signed-off-by: Jeff Kirsher --- include/linux/if_link.h | 10 ++++++++++ include/linux/netdevice.h | 3 +++ 2 files changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 0ee969a5593d..c52d4b5f872a 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -279,6 +279,7 @@ enum { IFLA_VF_MAC, /* Hardware queue specific attributes */ IFLA_VF_VLAN, IFLA_VF_TX_RATE, /* TX Bandwidth Allocation */ + IFLA_VF_SPOOFCHK, /* Spoof Checking on/off switch */ __IFLA_VF_MAX, }; @@ -300,13 +301,22 @@ struct ifla_vf_tx_rate { __u32 rate; /* Max TX bandwidth in Mbps, 0 disables throttling */ }; +struct ifla_vf_spoofchk { + __u32 vf; + __u32 setting; +}; +#ifdef __KERNEL__ + +/* We don't want this structure exposed to user space */ struct ifla_vf_info { __u32 vf; __u8 mac[32]; __u32 vlan; __u32 qos; __u32 tx_rate; + __u32 spoofchk; }; +#endif /* VF ports management section * diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 43b32983ba10..0db1f5f6d4a8 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -781,6 +781,7 @@ struct netdev_tc_txq { * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); + * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); * int (*ndo_get_vf_config)(struct net_device *dev, * int vf, struct ifla_vf_info *ivf); * int (*ndo_set_vf_port)(struct net_device *dev, int vf, @@ -900,6 +901,8 @@ struct net_device_ops { int queue, u16 vlan, u8 qos); int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate); + int (*ndo_set_vf_spoofchk)(struct net_device *dev, + int vf, bool setting); int (*ndo_get_vf_config)(struct net_device *dev, int vf, struct ifla_vf_info *ivf); -- cgit v1.2.2 From 2a77c46de1e3dace73745015635ebbc648eca69c Mon Sep 17 00:00:00 2001 From: ShuoX Liu Date: Wed, 10 Aug 2011 23:01:26 +0200 Subject: PM / Suspend: Add statistics debugfs file for suspend to RAM Record S3 failure time about each reason and the latest two failed devices' names in S3 progress. We can check it through 'suspend_stats' entry in debugfs. The motivation of the patch: We are enabling power features on Medfield. Comparing with PC/notebook, a mobile enters/exits suspend-2-ram (we call it s3 on Medfield) far more frequently. If it can't enter suspend-2-ram in time, the power might be used up soon. We often find sometimes, a device suspend fails. Then, system retries s3 over and over again. As display is off, testers and developers don't know what happens. Some testers and developers complain they don't know if system tries suspend-2-ram, and what device fails to suspend. They need such info for a quick check. The patch adds suspend_stats under debugfs for users to check suspend to RAM statistics quickly. If not using this patch, we have other methods to get info about what device fails. One is to turn on CONFIG_PM_DEBUG, but users would get too much info and testers need recompile the system. In addition, dynamic debug is another good tool to dump debug info. But it still doesn't match our utilization scenario closely. 1) user need write a user space parser to process the syslog output; 2) Our testing scenario is we leave the mobile for at least hours. Then, check its status. No serial console available during the testing. One is because console would be suspended, and the other is serial console connecting with spi or HSU devices would consume power. These devices are powered off at suspend-2-ram. Signed-off-by: ShuoX Liu Signed-off-by: Rafael J. Wysocki --- include/linux/suspend.h | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 6bbcef22e105..76f42e49b72d 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -34,6 +34,58 @@ typedef int __bitwise suspend_state_t; #define PM_SUSPEND_MEM ((__force suspend_state_t) 3) #define PM_SUSPEND_MAX ((__force suspend_state_t) 4) +enum suspend_stat_step { + SUSPEND_FREEZE = 1, + SUSPEND_PREPARE, + SUSPEND_SUSPEND, + SUSPEND_SUSPEND_NOIRQ, + SUSPEND_RESUME_NOIRQ, + SUSPEND_RESUME +}; + +struct suspend_stats { + int success; + int fail; + int failed_freeze; + int failed_prepare; + int failed_suspend; + int failed_suspend_noirq; + int failed_resume; + int failed_resume_noirq; +#define REC_FAILED_NUM 2 + int last_failed_dev; + char failed_devs[REC_FAILED_NUM][40]; + int last_failed_errno; + int errno[REC_FAILED_NUM]; + int last_failed_step; + enum suspend_stat_step failed_steps[REC_FAILED_NUM]; +}; + +extern struct suspend_stats suspend_stats; + +static inline void dpm_save_failed_dev(const char *name) +{ + strlcpy(suspend_stats.failed_devs[suspend_stats.last_failed_dev], + name, + sizeof(suspend_stats.failed_devs[0])); + suspend_stats.last_failed_dev++; + suspend_stats.last_failed_dev %= REC_FAILED_NUM; +} + +static inline void dpm_save_failed_errno(int err) +{ + suspend_stats.errno[suspend_stats.last_failed_errno] = err; + suspend_stats.last_failed_errno++; + suspend_stats.last_failed_errno %= REC_FAILED_NUM; +} + +static inline void dpm_save_failed_step(enum suspend_stat_step step) +{ + suspend_stats.failed_steps[suspend_stats.last_failed_step] = step; + suspend_stats.last_failed_step++; + suspend_stats.last_failed_step %= REC_FAILED_NUM; +} + /** * struct platform_suspend_ops - Callbacks for managing platform dependent * system sleep states. -- cgit v1.2.2 From 85055dd805f0822f13f736bee2a521e222c38293 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Wed, 17 Aug 2011 20:42:24 +0200 Subject: PM / Hibernate: Include storage keys in hibernation image on s390 For s390 there is one additional byte associated with each page, the storage key. This byte contains the referenced and changed bits and needs to be included into the hibernation image. If the storage keys are not restored to their previous state all original pages would appear to be dirty. This can cause inconsistencies e.g. with read-only filesystems. Signed-off-by: Martin Schwidefsky Signed-off-by: Rafael J. Wysocki --- include/linux/suspend.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 76f42e49b72d..46f3548aef2d 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -386,4 +386,38 @@ static inline void unlock_system_sleep(void) } #endif +#ifdef CONFIG_ARCH_SAVE_PAGE_KEYS +/* + * The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture + * to save/restore additional information to/from the array of page + * frame numbers in the hibernation image. For s390 this is used to + * save and restore the storage key for each page that is included + * in the hibernation image. + */ +unsigned long page_key_additional_pages(unsigned long pages); +int page_key_alloc(unsigned long pages); +void page_key_free(void); +void page_key_read(unsigned long *pfn); +void page_key_memorize(unsigned long *pfn); +void page_key_write(void *address); + +#else /* !CONFIG_ARCH_SAVE_PAGE_KEYS */ + +static inline unsigned long page_key_additional_pages(unsigned long pages) +{ + return 0; +} + +static inline int page_key_alloc(unsigned long pages) +{ + return 0; +} + +static inline void page_key_free(void) {} +static inline void page_key_read(unsigned long *pfn) {} +static inline void page_key_memorize(unsigned long *pfn) {} +static inline void page_key_write(void *address) {} + +#endif /* !CONFIG_ARCH_SAVE_PAGE_KEYS */ + #endif /* _LINUX_SUSPEND_H */ -- cgit v1.2.2 From 37cce26b32142f09a8967f6d238178af654b20de Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 21 Sep 2011 22:47:55 +0200 Subject: PM / VT: Cleanup #if defined uglyness and fix compile error Introduce the config option CONFIG_VT_CONSOLE_SLEEP in order to cleanup the #if defined ugliness for the vt suspend support functions. Note that CONFIG_VT_CONSOLE is already dependant on CONFIG_VT. The function pm_set_vt_switch is actually dependant on CONFIG_VT and not CONFIG_PM_SLEEP. This fixes a compile error when CONFIG_PM_SLEEP is not set: drivers/tty/vt/vt_ioctl.c:1794: error: redefinition of 'pm_set_vt_switch' include/linux/suspend.h:17: error: previous definition of 'pm_set_vt_switch' was here Also, remove the incorrect path from the comment in console.c. [rjw: Replaced #if defined() with #ifdef in suspend.h.] Signed-off-by: H Hartley Sweeten Acked-by: Arnd Bergmann Signed-off-by: Rafael J. Wysocki --- include/linux/suspend.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 46f3548aef2d..57a692432f8a 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -8,15 +8,18 @@ #include #include -#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) +#ifdef CONFIG_VT extern void pm_set_vt_switch(int); -extern int pm_prepare_console(void); -extern void pm_restore_console(void); #else static inline void pm_set_vt_switch(int do_switch) { } +#endif +#ifdef CONFIG_VT_CONSOLE_SLEEP +extern int pm_prepare_console(void); +extern void pm_restore_console(void); +#else static inline int pm_prepare_console(void) { return 0; -- cgit v1.2.2 From 2aede851ddf08666f68ffc17be446420e9d2a056 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 26 Sep 2011 20:32:27 +0200 Subject: PM / Hibernate: Freeze kernel threads after preallocating memory There is a problem with the current ordering of hibernate code which leads to deadlocks in some filesystems' memory shrinkers. Namely, some filesystems use freezable kernel threads that are inactive when the hibernate memory preallocation is carried out. Those same filesystems use memory shrinkers that may be triggered by the hibernate memory preallocation. If those memory shrinkers wait for the frozen kernel threads, the hibernate process deadlocks (this happens with XFS, for one example). Apparently, it is not technically viable to redesign the filesystems in question to avoid the situation described above, so the only possible solution of this issue is to defer the freezing of kernel threads until the hibernate memory preallocation is done, which is implemented by this change. Unfortunately, this requires the memory preallocation to be done before the "prepare" stage of device freeze, so after this change the only way drivers can allocate additional memory for their freeze routines in a clean way is to use PM notifiers. Reported-by: Christoph Signed-off-by: Rafael J. Wysocki --- include/linux/freezer.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index 1effc8b56b4e..aa56cf31f7ff 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -49,6 +49,7 @@ extern int thaw_process(struct task_struct *p); extern void refrigerator(void); extern int freeze_processes(void); +extern int freeze_kernel_threads(void); extern void thaw_processes(void); static inline int try_to_freeze(void) @@ -171,7 +172,8 @@ static inline void clear_freeze_flag(struct task_struct *p) {} static inline int thaw_process(struct task_struct *p) { return 1; } static inline void refrigerator(void) {} -static inline int freeze_processes(void) { BUG(); return 0; } +static inline int freeze_processes(void) { return -ENOSYS; } +static inline int freeze_kernel_threads(void) { return -ENOSYS; } static inline void thaw_processes(void) {} static inline int try_to_freeze(void) { return 0; } -- cgit v1.2.2 From 9bab0b7fbaceec47d32db51cd9e59c82fb071f5a Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Mon, 3 Oct 2011 15:37:00 +0100 Subject: genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier This adds a mechanism to resume selected IRQs during syscore_resume instead of dpm_resume_noirq. Under Xen we need to resume IRQs associated with IPIs early enough that the resched IPI is unmasked and we can therefore schedule ourselves out of the stop_machine where the suspend/resume takes place. This issue was introduced by 676dc3cf5bc3 "xen: Use IRQF_FORCE_RESUME". Signed-off-by: Ian Campbell Cc: Rafael J. Wysocki Cc: Jeremy Fitzhardinge Cc: xen-devel Cc: Konrad Rzeszutek Wilk Link: http://lkml.kernel.org/r/1318713254.11016.52.camel@dagon.hellion.org.uk Cc: stable@kernel.org (at least to 2.6.32.y) Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 664544ff77d5..a64b00e286f5 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -59,6 +59,8 @@ * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set * IRQF_NO_THREAD - Interrupt cannot be threaded + * IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device + * resume time. */ #define IRQF_DISABLED 0x00000020 #define IRQF_SAMPLE_RANDOM 0x00000040 @@ -72,6 +74,7 @@ #define IRQF_NO_SUSPEND 0x00004000 #define IRQF_FORCE_RESUME 0x00008000 #define IRQF_NO_THREAD 0x00010000 +#define IRQF_EARLY_RESUME 0x00020000 #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD) -- cgit v1.2.2 From 456be1484ffc72a24bdb4200b5847c4fa90139d9 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 17 Oct 2011 12:57:20 +0200 Subject: loop: remove the incorrect write_begin/write_end shortcut Currently the loop device tries to call directly into write_begin/write_end instead of going through ->write if it can. This is a fairly nasty shortcut as write_begin and write_end are only callbacks for the generic write code and expect to be called with filesystem specific locks held. This code currently causes various issues for clustered filesystems as it doesn't take the required cluster locks, and it also causes issues for XFS as it doesn't properly lock against the swapext ioctl as called by the defragmentation tools. This in case causes data corruption if defragmentation hits a busy loop device in the wrong time window, as reported by RH QA. The reason why we have this shortcut is that it saves a data copy when doing a transformation on the loop device, which is the technical term for using cryptoloop (or an XOR transformation). Given that cryptoloop has been deprecated in favour of dm-crypt my opinion is that we should simply drop this shortcut instead of finding complicated ways to to introduce a formal interface for this shortcut. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- include/linux/loop.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/loop.h b/include/linux/loop.h index 683d69890119..a06880689115 100644 --- a/include/linux/loop.h +++ b/include/linux/loop.h @@ -73,7 +73,6 @@ struct loop_device { */ enum { LO_FLAGS_READ_ONLY = 1, - LO_FLAGS_USE_AOPS = 2, LO_FLAGS_AUTOCLEAR = 4, }; -- cgit v1.2.2 From f861c2b80c45954e1ea04ead24cafcb1806dd536 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Mon, 17 Oct 2011 09:32:00 +0000 Subject: can: remove references to berlios mailinglist The BerliOS project, which currently hosts our mailinglist, will close with the end of the year. Now take the chance and remove all occurrences of the mailinglist address from the source files. Signed-off-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- include/linux/can.h | 2 -- include/linux/can/bcm.h | 2 -- include/linux/can/core.h | 2 -- include/linux/can/dev.h | 1 - include/linux/can/error.h | 2 -- include/linux/can/gw.h | 2 -- include/linux/can/netlink.h | 2 -- include/linux/can/raw.h | 2 -- 8 files changed, 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/can.h b/include/linux/can.h index bb047dc2de16..9a19bcb3eeaf 100644 --- a/include/linux/can.h +++ b/include/linux/can.h @@ -8,8 +8,6 @@ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_H diff --git a/include/linux/can/bcm.h b/include/linux/can/bcm.h index e96154de4039..3ebe387fea4d 100644 --- a/include/linux/can/bcm.h +++ b/include/linux/can/bcm.h @@ -7,8 +7,6 @@ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_BCM_H diff --git a/include/linux/can/core.h b/include/linux/can/core.h index 5ce6b5d62ecc..0ccc1cd28b95 100644 --- a/include/linux/can/core.h +++ b/include/linux/can/core.h @@ -8,8 +8,6 @@ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_CORE_H diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index cc0bb4961669..a0969fcb72b9 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -8,7 +8,6 @@ * * Copyright (C) 2008 Wolfgang Grandegger * - * Send feedback to */ #ifndef CAN_DEV_H diff --git a/include/linux/can/error.h b/include/linux/can/error.h index 5958074302a4..63e855ea6b84 100644 --- a/include/linux/can/error.h +++ b/include/linux/can/error.h @@ -7,8 +7,6 @@ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_ERROR_H diff --git a/include/linux/can/gw.h b/include/linux/can/gw.h index 5527b54a7cc4..8e1db18c3cb6 100644 --- a/include/linux/can/gw.h +++ b/include/linux/can/gw.h @@ -7,8 +7,6 @@ * Copyright (c) 2011 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_GW_H diff --git a/include/linux/can/netlink.h b/include/linux/can/netlink.h index 34542d374dd8..14966ddb7df1 100644 --- a/include/linux/can/netlink.h +++ b/include/linux/can/netlink.h @@ -5,8 +5,6 @@ * * Copyright (c) 2009 Wolfgang Grandegger * - * Send feedback to - * */ #ifndef CAN_NETLINK_H diff --git a/include/linux/can/raw.h b/include/linux/can/raw.h index b2a0f87492c5..781f3a3701be 100644 --- a/include/linux/can/raw.h +++ b/include/linux/can/raw.h @@ -8,8 +8,6 @@ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * - * Send feedback to - * */ #ifndef CAN_RAW_H -- cgit v1.2.2 From c1225158a8dad9e9d5eee8a17dbbd9c7cda05ab9 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Thu, 22 Sep 2011 21:50:10 -0400 Subject: SUNRPC/NFS: make rpc pipe upcall generic The same function is used by idmap, gss and blocklayout code. Make it generic. Signed-off-by: Peng Tao Signed-off-by: Jim Rees Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust --- include/linux/sunrpc/rpc_pipe_fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h index cf14db975da0..e4ea43058d8f 100644 --- a/include/linux/sunrpc/rpc_pipe_fs.h +++ b/include/linux/sunrpc/rpc_pipe_fs.h @@ -44,6 +44,8 @@ RPC_I(struct inode *inode) return container_of(inode, struct rpc_inode, vfs_inode); } +extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *, + char __user *, size_t); extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *); struct rpc_clnt; -- cgit v1.2.2 From d77385f23830ee6c400569bac8b37e6eb3b7d360 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 17 Oct 2011 16:08:10 -0700 Subject: SUNRPC: Fix rpc_sockaddr2uaddr rpc_sockaddr2uaddr is only used by net/sunrpc/rpcb_clnt.c, where it is used in a non-blockable context in at least one case. Add non-blocking capability by adding a gfp_t argument Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index db7bcaf7c5bd..d926fd1a5313 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -9,6 +9,7 @@ #ifndef _LINUX_SUNRPC_CLNT_H #define _LINUX_SUNRPC_CLNT_H +#include #include #include #include @@ -161,7 +162,7 @@ const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t); size_t rpc_ntop(const struct sockaddr *, char *, const size_t); size_t rpc_pton(const char *, const size_t, struct sockaddr *, const size_t); -char * rpc_sockaddr2uaddr(const struct sockaddr *); +char * rpc_sockaddr2uaddr(const struct sockaddr *, gfp_t); size_t rpc_uaddr2sockaddr(const char *, const size_t, struct sockaddr *, const size_t); -- cgit v1.2.2 From a9a4a87a5942e9271523197a90aaa82349c818fb Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 17 Oct 2011 16:08:46 -0700 Subject: NFS: Use the inode->i_version to cache NFSv4 change attribute information Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index eaac770f886e..60a137b7f171 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -149,7 +149,6 @@ struct nfs_inode { unsigned long read_cache_jiffies; unsigned long attrtimeo; unsigned long attrtimeo_timestamp; - __u64 change_attr; /* v4 only */ unsigned long attr_gencount; /* "Generation counter" for the attribute cache. This is -- cgit v1.2.2 From 27a90700a4275c5178b883b65927affdafa5185c Mon Sep 17 00:00:00 2001 From: Kai Jiang Date: Mon, 17 Oct 2011 20:50:20 +0200 Subject: uio: Support physical addresses >32 bits on 32-bit systems To support >32-bit physical addresses for UIO_MEM_PHYS type we need to extend the width of 'addr' in struct uio_mem. Numerous platforms like embedded PPC, ARM, and X86 have support for systems with larger physical address than logical. Since 'addr' may contain a physical, logical, or virtual address the easiest solution is to just change the type to 'phys_addr_t' which should always be greater than or equal to the sizeof(void *) such that it can properly hold any of the address types. For physical address we can support up to a 44-bit physical address on a typical 32-bit system as we utilize remap_pfn_range() for the mapping of the memory region and pfn's are represnted by shifting the address by the page size (typically 4k). Signed-off-by: Kai Jiang Signed-off-by: Minghuan Lian Signed-off-by: Kumar Gala Signed-off-by: Hans J. Koch Signed-off-by: Greg Kroah-Hartman --- include/linux/uio_driver.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index 665517c05eaf..fd99ff9298c6 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -23,7 +23,10 @@ struct uio_map; /** * struct uio_mem - description of a UIO memory region * @name: name of the memory region for identification - * @addr: address of the device's memory + * @addr: address of the device's memory (phys_addr is used since + * addr can be logical, virtual, or physical & phys_addr_t + * should always be large enough to handle any of the + * address types) * @size: size of IO * @memtype: type of memory addr points to * @internal_addr: ioremap-ped version of addr, for driver internal use @@ -31,7 +34,7 @@ struct uio_map; */ struct uio_mem { const char *name; - unsigned long addr; + phys_addr_t addr; unsigned long size; int memtype; void __iomem *internal_addr; -- cgit v1.2.2 From 07613b0b5ef8570033aa806d1731dce599862223 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Tue, 4 Oct 2011 14:13:15 -0700 Subject: dynamic_debug: consolidate repetitive struct _ddebug descriptor definitions Replace the repetitive struct _ddebug descriptor definitions with a new DECLARE_DYNAMIC_DEBUG_META_DATA(name, fmt) macro. [akpm@linux-foundation.org: s/DECLARE/DEFINE/] Signed-off-by: Jason Baron Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/dynamic_debug.h | 64 +++++++++++++++++++++++-------------------- 1 file changed, 35 insertions(+), 29 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index feaac1ee3001..13aae8087b56 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -54,35 +54,41 @@ extern int __dynamic_netdev_dbg(struct _ddebug *descriptor, const char *fmt, ...) __attribute__ ((format (printf, 3, 4))); -#define dynamic_pr_debug(fmt, ...) do { \ - static struct _ddebug descriptor \ - __used \ - __attribute__((section("__verbose"), aligned(8))) = \ - { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ - _DPRINTK_FLAGS_DEFAULT }; \ - if (unlikely(descriptor.enabled)) \ - __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \ - } while (0) - -#define dynamic_dev_dbg(dev, fmt, ...) do { \ - static struct _ddebug descriptor \ - __used \ - __attribute__((section("__verbose"), aligned(8))) = \ - { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ - _DPRINTK_FLAGS_DEFAULT }; \ - if (unlikely(descriptor.enabled)) \ - __dynamic_dev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__); \ - } while (0) - -#define dynamic_netdev_dbg(dev, fmt, ...) do { \ - static struct _ddebug descriptor \ - __used \ - __attribute__((section("__verbose"), aligned(8))) = \ - { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ - _DPRINTK_FLAGS_DEFAULT }; \ - if (unlikely(descriptor.enabled)) \ - __dynamic_netdev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__);\ - } while (0) +#define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt) \ + static struct _ddebug __used __aligned(8) \ + __attribute__((section("__verbose"))) name = { \ + .modname = KBUILD_MODNAME, \ + .function = __func__, \ + .filename = __FILE__, \ + .format = (fmt), \ + .lineno = __LINE__, \ + .flags = _DPRINTK_FLAGS_DEFAULT, \ + .enabled = false, \ + } + +#define dynamic_pr_debug(fmt, ...) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.enabled)) \ + __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ + ##__VA_ARGS__); \ +} while (0) + +#define dynamic_dev_dbg(dev, fmt, ...) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.enabled)) \ + __dynamic_dev_dbg(&descriptor, dev, fmt, \ + ##__VA_ARGS__); \ +} while (0) + +#define dynamic_netdev_dbg(dev, fmt, ...) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.enabled)) \ + __dynamic_netdev_dbg(&descriptor, dev, fmt, \ + ##__VA_ARGS__); \ +} while (0) #else -- cgit v1.2.2 From 8193c4290620d9b2a6ac116719f11aa99053a90d Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Wed, 5 Oct 2011 23:13:13 +0200 Subject: tty: Support compat_ioctl get/set termios_locked When running a Fedora 15 (x86) on an x86_64 kernel, in the boot process plymouthd complains about those two missing ioctls: [ 2.581783] ioctl32(plymouthd:186): Unknown cmd fd(10) cmd(00005457){t:'T';sz:0} arg(ffb6a5d0) on /dev/tty1 [ 2.581803] ioctl32(plymouthd:186): Unknown cmd fd(10) cmd(00005456){t:'T';sz:0} arg(ffb6a680) on /dev/tty1 both ioctl functions work on the 'struct termios' resp. 'struct termios2', which has the same size (36 bytes resp. 44 bytes) on x86 and x86_64, so it's just a matter of converting the pointer from userland. Signed-off-by: Thomas Meyer Cc: Arnd Bergmann Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 0ad68889fc1a..64c12a3e65f0 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -579,6 +579,8 @@ extern int __init tty_init(void); /* tty_ioctl.c */ extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); +extern long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg); /* serial.c */ -- cgit v1.2.2 From fa90e1c935472281de314e6d7c9a37db9cbc2e4e Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 12 Oct 2011 11:32:43 +0200 Subject: TTY: make tty_add_file non-failing If tty_add_file fails at the point it is now, we have to revert all the changes we did to the tty. It means either decrease all refcounts if this was a tty reopen or delete the tty if it was newly allocated. There was a try to fix this in v3.0-rc2 using tty_release in 0259894c7 (TTY: fix fail path in tty_open). But instead it introduced a NULL dereference. It's because tty_release dereferences filp->private_data, but that one is set even in our tty_add_file. And when tty_add_file fails, it's still NULL/garbage. Hence tty_release cannot be called there. To circumvent the original leak (and the current NULL deref) we split tty_add_file into two functions, making the latter non-failing. In that case we may do the former early in open, where handling failures is easy. The latter stays as it is now. So there is no change in functionality. The original bug (leak) was introduced by f573bd176 (tty: Remove __GFP_NOFAIL from tty_add_file()). Thanks Dan for reporting this. Later, we may split tty_release into more functions and call only some of them in this fail path instead. (If at all possible.) Introduced-in: v2.6.37-rc2 Signed-off-by: Jiri Slaby Reported-by: Dan Carpenter Cc: stable Cc: Alan Cox Cc: Pekka Enberg Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 64c12a3e65f0..ff2925aa4e79 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -471,7 +471,9 @@ extern void proc_clear_tty(struct task_struct *p); extern struct tty_struct *get_current_tty(void); extern void tty_default_fops(struct file_operations *fops); extern struct tty_struct *alloc_tty_struct(void); -extern int tty_add_file(struct tty_struct *tty, struct file *file); +extern int tty_alloc_file(struct file *file); +extern void tty_add_file(struct tty_struct *tty, struct file *file); +extern void tty_free_file(struct file *file); extern void free_tty_struct(struct tty_struct *tty); extern void initialize_tty_struct(struct tty_struct *tty, struct tty_driver *driver, int idx); -- cgit v1.2.2 From 0c2e53f11a6dae9e3af5f50f5ad0382e7c3e0cfa Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 18 Oct 2011 16:11:22 -0700 Subject: NFS: Remove the unused "lookupfh()" version of nfs4_proc_lookup() ...and also remove the associated nfs_v4_clientops entry. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index abd615d74a29..1e31e1c8655b 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1197,9 +1197,6 @@ struct nfs_rpc_ops { int (*getroot) (struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); - int (*lookupfh)(struct nfs_server *, struct nfs_fh *, - struct qstr *, struct nfs_fh *, - struct nfs_fattr *); int (*getattr) (struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); int (*setattr) (struct dentry *, struct nfs_fattr *, -- cgit v1.2.2 From 3f48e7354358519e5b93f7f755ec270b3f8eafa0 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 18 Oct 2011 21:12:39 -0700 Subject: Input: adp5589-keys - add support for the ADP5585 derivatives The ADP5585 family keypad decoder and IO expander is similar to the ADP5589, however it features less IO pins, and lacks hardware assisted key-lock functionality. Unfortunately the register addresses are different, as well as the event codes and bit organization within the port related registers. Move ADP5589 Register defines from the header file into the main source file. Add new defines while making sure we don't break existing platform_data. Add register address translation, and turn device specific defines into variables. Introduce some helper functions and disable functions that doesn't exist on the added devices. Signed-off-by: Michael Hennerich Signed-off-by: Dmitry Torokhov --- include/linux/input/adp5589.h | 157 ++++++++++++++++++------------------------ 1 file changed, 66 insertions(+), 91 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input/adp5589.h b/include/linux/input/adp5589.h index ef792ecfaabf..1a05eee15e67 100644 --- a/include/linux/input/adp5589.h +++ b/include/linux/input/adp5589.h @@ -1,5 +1,5 @@ /* - * Analog Devices ADP5589 I/O Expander and QWERTY Keypad Controller + * Analog Devices ADP5589/ADP5585 I/O Expander and QWERTY Keypad Controller * * Copyright 2010-2011 Analog Devices Inc. * @@ -9,89 +9,9 @@ #ifndef _ADP5589_H #define _ADP5589_H -#define ADP5589_ID 0x00 -#define ADP5589_INT_STATUS 0x01 -#define ADP5589_STATUS 0x02 -#define ADP5589_FIFO_1 0x03 -#define ADP5589_FIFO_2 0x04 -#define ADP5589_FIFO_3 0x05 -#define ADP5589_FIFO_4 0x06 -#define ADP5589_FIFO_5 0x07 -#define ADP5589_FIFO_6 0x08 -#define ADP5589_FIFO_7 0x09 -#define ADP5589_FIFO_8 0x0A -#define ADP5589_FIFO_9 0x0B -#define ADP5589_FIFO_10 0x0C -#define ADP5589_FIFO_11 0x0D -#define ADP5589_FIFO_12 0x0E -#define ADP5589_FIFO_13 0x0F -#define ADP5589_FIFO_14 0x10 -#define ADP5589_FIFO_15 0x11 -#define ADP5589_FIFO_16 0x12 -#define ADP5589_GPI_INT_STAT_A 0x13 -#define ADP5589_GPI_INT_STAT_B 0x14 -#define ADP5589_GPI_INT_STAT_C 0x15 -#define ADP5589_GPI_STATUS_A 0x16 -#define ADP5589_GPI_STATUS_B 0x17 -#define ADP5589_GPI_STATUS_C 0x18 -#define ADP5589_RPULL_CONFIG_A 0x19 -#define ADP5589_RPULL_CONFIG_B 0x1A -#define ADP5589_RPULL_CONFIG_C 0x1B -#define ADP5589_RPULL_CONFIG_D 0x1C -#define ADP5589_RPULL_CONFIG_E 0x1D -#define ADP5589_GPI_INT_LEVEL_A 0x1E -#define ADP5589_GPI_INT_LEVEL_B 0x1F -#define ADP5589_GPI_INT_LEVEL_C 0x20 -#define ADP5589_GPI_EVENT_EN_A 0x21 -#define ADP5589_GPI_EVENT_EN_B 0x22 -#define ADP5589_GPI_EVENT_EN_C 0x23 -#define ADP5589_GPI_INTERRUPT_EN_A 0x24 -#define ADP5589_GPI_INTERRUPT_EN_B 0x25 -#define ADP5589_GPI_INTERRUPT_EN_C 0x26 -#define ADP5589_DEBOUNCE_DIS_A 0x27 -#define ADP5589_DEBOUNCE_DIS_B 0x28 -#define ADP5589_DEBOUNCE_DIS_C 0x29 -#define ADP5589_GPO_DATA_OUT_A 0x2A -#define ADP5589_GPO_DATA_OUT_B 0x2B -#define ADP5589_GPO_DATA_OUT_C 0x2C -#define ADP5589_GPO_OUT_MODE_A 0x2D -#define ADP5589_GPO_OUT_MODE_B 0x2E -#define ADP5589_GPO_OUT_MODE_C 0x2F -#define ADP5589_GPIO_DIRECTION_A 0x30 -#define ADP5589_GPIO_DIRECTION_B 0x31 -#define ADP5589_GPIO_DIRECTION_C 0x32 -#define ADP5589_UNLOCK1 0x33 -#define ADP5589_UNLOCK2 0x34 -#define ADP5589_EXT_LOCK_EVENT 0x35 -#define ADP5589_UNLOCK_TIMERS 0x36 -#define ADP5589_LOCK_CFG 0x37 -#define ADP5589_RESET1_EVENT_A 0x38 -#define ADP5589_RESET1_EVENT_B 0x39 -#define ADP5589_RESET1_EVENT_C 0x3A -#define ADP5589_RESET2_EVENT_A 0x3B -#define ADP5589_RESET2_EVENT_B 0x3C -#define ADP5589_RESET_CFG 0x3D -#define ADP5589_PWM_OFFT_LOW 0x3E -#define ADP5589_PWM_OFFT_HIGH 0x3F -#define ADP5589_PWM_ONT_LOW 0x40 -#define ADP5589_PWM_ONT_HIGH 0x41 -#define ADP5589_PWM_CFG 0x42 -#define ADP5589_CLOCK_DIV_CFG 0x43 -#define ADP5589_LOGIC_1_CFG 0x44 -#define ADP5589_LOGIC_2_CFG 0x45 -#define ADP5589_LOGIC_FF_CFG 0x46 -#define ADP5589_LOGIC_INT_EVENT_EN 0x47 -#define ADP5589_POLL_PTIME_CFG 0x48 -#define ADP5589_PIN_CONFIG_A 0x49 -#define ADP5589_PIN_CONFIG_B 0x4A -#define ADP5589_PIN_CONFIG_C 0x4B -#define ADP5589_PIN_CONFIG_D 0x4C -#define ADP5589_GENERAL_CFG 0x4D -#define ADP5589_INT_EN 0x4E - -#define ADP5589_DEVICE_ID_MASK 0xF - -/* Put one of these structures in i2c_board_info platform_data */ +/* + * ADP5589 specific GPI and Keymap defines + */ #define ADP5589_KEYMAPSIZE 88 @@ -127,6 +47,35 @@ #define ADP5589_GPIMAPSIZE_MAX (ADP5589_GPI_PIN_END - ADP5589_GPI_PIN_BASE + 1) +/* + * ADP5585 specific GPI and Keymap defines + */ + +#define ADP5585_KEYMAPSIZE 30 + +#define ADP5585_GPI_PIN_ROW0 37 +#define ADP5585_GPI_PIN_ROW1 38 +#define ADP5585_GPI_PIN_ROW2 39 +#define ADP5585_GPI_PIN_ROW3 40 +#define ADP5585_GPI_PIN_ROW4 41 +#define ADP5585_GPI_PIN_ROW5 42 +#define ADP5585_GPI_PIN_COL0 43 +#define ADP5585_GPI_PIN_COL1 44 +#define ADP5585_GPI_PIN_COL2 45 +#define ADP5585_GPI_PIN_COL3 46 +#define ADP5585_GPI_PIN_COL4 47 +#define GPI_LOGIC 48 + +#define ADP5585_GPI_PIN_ROW_BASE ADP5585_GPI_PIN_ROW0 +#define ADP5585_GPI_PIN_ROW_END ADP5585_GPI_PIN_ROW5 +#define ADP5585_GPI_PIN_COL_BASE ADP5585_GPI_PIN_COL0 +#define ADP5585_GPI_PIN_COL_END ADP5585_GPI_PIN_COL4 + +#define ADP5585_GPI_PIN_BASE ADP5585_GPI_PIN_ROW_BASE +#define ADP5585_GPI_PIN_END ADP5585_GPI_PIN_COL_END + +#define ADP5585_GPIMAPSIZE_MAX (ADP5585_GPI_PIN_END - ADP5585_GPI_PIN_BASE + 1) + struct adp5589_gpi_map { unsigned short pin; unsigned short sw_evt; @@ -159,7 +108,7 @@ struct adp5589_gpi_map { #define RESET2_POL_HIGH (1 << 7) #define RESET2_POL_LOW (0 << 7) -/* Mask Bits: +/* ADP5589 Mask Bits: * C C C C C C C C C C C | R R R R R R R R * 1 9 8 7 6 5 4 3 2 1 0 | 7 6 5 4 3 2 1 0 * 0 @@ -168,18 +117,44 @@ struct adp5589_gpi_map { * 8 7 6 5 4 3 2 1 0 9 8 | 7 6 5 4 3 2 1 0 */ -#define ADP_ROW(x) (1 << (x)) -#define ADP_COL(x) (1 << (x + 8)) +#define ADP_ROW(x) (1 << (x)) +#define ADP_COL(x) (1 << (x + 8)) +#define ADP5589_ROW_MASK 0xFF +#define ADP5589_COL_MASK 0xFF +#define ADP5589_COL_SHIFT 8 +#define ADP5589_MAX_ROW_NUM 7 +#define ADP5589_MAX_COL_NUM 10 + +/* ADP5585 Mask Bits: + * C C C C C | R R R R R R + * 4 3 2 1 0 | 5 4 3 2 1 0 + * + * ---- BIT -- ----------- + * 1 0 0 0 0 | 0 0 0 0 0 0 + * 0 9 8 7 6 | 5 4 3 2 1 0 + */ + +#define ADP5585_ROW_MASK 0x3F +#define ADP5585_COL_MASK 0x1F +#define ADP5585_ROW_SHIFT 0 +#define ADP5585_COL_SHIFT 6 +#define ADP5585_MAX_ROW_NUM 5 +#define ADP5585_MAX_COL_NUM 4 + +#define ADP5585_ROW(x) (1 << ((x) & ADP5585_ROW_MASK)) +#define ADP5585_COL(x) (1 << (((x) & ADP5585_COL_MASK) + ADP5585_COL_SHIFT)) + +/* Put one of these structures in i2c_board_info platform_data */ struct adp5589_kpad_platform_data { unsigned keypad_en_mask; /* Keypad (Rows/Columns) enable mask */ const unsigned short *keymap; /* Pointer to keymap */ unsigned short keymapsize; /* Keymap size */ bool repeat; /* Enable key repeat */ - bool en_keylock; /* Enable key lock feature */ - unsigned char unlock_key1; /* Unlock Key 1 */ - unsigned char unlock_key2; /* Unlock Key 2 */ - unsigned char unlock_timer; /* Time in seconds [0..7] between the two unlock keys 0=disable */ + bool en_keylock; /* Enable key lock feature (ADP5589 only)*/ + unsigned char unlock_key1; /* Unlock Key 1 (ADP5589 only) */ + unsigned char unlock_key2; /* Unlock Key 2 (ADP5589 only) */ + unsigned char unlock_timer; /* Time in seconds [0..7] between the two unlock keys 0=disable (ADP5589 only) */ unsigned char scan_cycle_time; /* Time between consecutive scan cycles */ unsigned char reset_cfg; /* Reset config */ unsigned short reset1_key_1; /* Reset Key 1 */ -- cgit v1.2.2 From 9e903e085262ffbf1fc44a17ac06058aca03524a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 18 Oct 2011 21:00:24 +0000 Subject: net: add skb frag size accessors To ease skb->truesize sanitization, its better to be able to localize all references to skb frags size. Define accessors : skb_frag_size() to fetch frag size, and skb_frag_size_{set|add|sub}() to manipulate it. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 64f86951ef74..6fcbbbd12ceb 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -150,6 +150,26 @@ struct skb_frag_struct { #endif }; +static inline unsigned int skb_frag_size(const skb_frag_t *frag) +{ + return frag->size; +} + +static inline void skb_frag_size_set(skb_frag_t *frag, unsigned int size) +{ + frag->size = size; +} + +static inline void skb_frag_size_add(skb_frag_t *frag, int delta) +{ + frag->size += delta; +} + +static inline void skb_frag_size_sub(skb_frag_t *frag, int delta) +{ + frag->size -= delta; +} + #define HAVE_HW_TIME_STAMP /** @@ -1132,7 +1152,7 @@ static inline int skb_pagelen(const struct sk_buff *skb) int i, len = 0; for (i = (int)skb_shinfo(skb)->nr_frags - 1; i >= 0; i--) - len += skb_shinfo(skb)->frags[i].size; + len += skb_frag_size(&skb_shinfo(skb)->frags[i]); return len + skb_headlen(skb); } @@ -1156,7 +1176,7 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i, frag->page = page; frag->page_offset = off; - frag->size = size; + skb_frag_size_set(frag, size); } /** @@ -1907,10 +1927,10 @@ static inline int skb_can_coalesce(struct sk_buff *skb, int i, const struct page *page, int off) { if (i) { - struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1]; + const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1]; return page == skb_frag_page(frag) && - off == frag->page_offset + frag->size; + off == frag->page_offset + skb_frag_size(frag); } return 0; } -- cgit v1.2.2 From f3a9d1f25dfeadf22c775880633a587cc6778872 Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 18 Oct 2011 01:50:42 +0000 Subject: mlx4_en: Controlling FCS header removal Canceling FCS removal where FW allows for better alignment of incoming data. Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 53ef894bfa05..2366f94a095a 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -75,6 +75,7 @@ enum { MLX4_DEV_CAP_FLAG_UD_MCAST = 1LL << 21, MLX4_DEV_CAP_FLAG_IBOE = 1LL << 30, MLX4_DEV_CAP_FLAG_UC_LOOPBACK = 1LL << 32, + MLX4_DEV_CAP_FLAG_FCS_KEEP = 1LL << 34, MLX4_DEV_CAP_FLAG_WOL = 1LL << 38, MLX4_DEV_CAP_FLAG_UDP_RSS = 1LL << 40, MLX4_DEV_CAP_FLAG_VEP_UC_STEER = 1LL << 41, -- cgit v1.2.2 From bc9fcbf9cb8ec76d340da16fbf48a9a316e14c52 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 19 Oct 2011 14:31:18 +0200 Subject: block: move blk_throtl prototypes to block/blk.h blk_throtl interface is block internal and there's no reason to have them in linux/blkdev.h. Move them to block/blk.h. This patch doesn't introduce any functional change. Signed-off-by: Tejun Heo Cc: Vivek Goyal Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 0b68044e7abb..5267cd2f20dc 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1197,20 +1197,6 @@ static inline uint64_t rq_io_start_time_ns(struct request *req) } #endif -#ifdef CONFIG_BLK_DEV_THROTTLING -extern int blk_throtl_init(struct request_queue *q); -extern void blk_throtl_exit(struct request_queue *q); -extern int blk_throtl_bio(struct request_queue *q, struct bio **bio); -#else /* CONFIG_BLK_DEV_THROTTLING */ -static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) -{ - return 0; -} - -static inline int blk_throtl_init(struct request_queue *q) { return 0; } -static inline int blk_throtl_exit(struct request_queue *q) { return 0; } -#endif /* CONFIG_BLK_DEV_THROTTLING */ - #define MODULE_ALIAS_BLOCKDEV(major,minor) \ MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor)) #define MODULE_ALIAS_BLOCKDEV_MAJOR(major) \ -- cgit v1.2.2 From bd87b5898a72b1aef6acf3705c61c9f6372adf0c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 19 Oct 2011 14:33:08 +0200 Subject: block: drop @tsk from attempt_plug_merge() and explain sync rules attempt_plug_merge() accesses elevator without holding queue_lock and may call into ->elevator_bio_merge_fn(). The elvator is guaranteed to be valid because it's accessed iff the plugged list has requests and elevator is never exited with live requests, so as long as the elevator method can deal with unlocked access, this is safe. Explain the sync rules around attempt_plug_merge() and drop the unnecessary @tsk parameter. This patch doesn't introduce any functional change. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/elevator.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index d800d5142184..1d0f7a2ff73b 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -38,6 +38,12 @@ struct elevator_ops elevator_merged_fn *elevator_merged_fn; elevator_merge_req_fn *elevator_merge_req_fn; elevator_allow_merge_fn *elevator_allow_merge_fn; + + /* + * Used for both plugged list and elevator merging and in the + * former case called without queue_lock. Read comment on top of + * attempt_plug_merge() for details. + */ elevator_bio_merged_fn *elevator_bio_merged_fn; elevator_dispatch_fn *elevator_dispatch_fn; -- cgit v1.2.2 From 8b289b2c2355c3bea75f3e499b4aa251a3191382 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 19 Oct 2011 11:52:12 -0400 Subject: nfsd4: implement new 4.1 open reclaim types Signed-off-by: J. Bruce Fields --- include/linux/nfs4.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index b875b0324fc0..32345c2805c0 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -410,7 +410,10 @@ enum open_claim_type4 { NFS4_OPEN_CLAIM_NULL = 0, NFS4_OPEN_CLAIM_PREVIOUS = 1, NFS4_OPEN_CLAIM_DELEGATE_CUR = 2, - NFS4_OPEN_CLAIM_DELEGATE_PREV = 3 + NFS4_OPEN_CLAIM_DELEGATE_PREV = 3, + NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */ + NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */ + NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */ }; enum opentype4 { -- cgit v1.2.2 From f06ac72e929115f2772c29727152ba0832d641e4 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 19 Oct 2011 15:30:40 -0400 Subject: cifs, freezer: add wait_event_freezekillable and have cifs use it CIFS currently uses wait_event_killable to put tasks to sleep while they await replies from the server. That function though does not allow the freezer to run. In many cases, the network interface may be going down anyway, in which case the reply will never come. The client then ends up blocking the computer from suspending. Fix this by adding a new wait_event_freezable variant -- wait_event_freezekillable. The idea is to combine the behavior of wait_event_killable and wait_event_freezable -- put the task to sleep and only allow it to be awoken by fatal signals, but also allow the freezer to do its job. Signed-off-by: Jeff Layton --- include/linux/freezer.h | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index 1effc8b56b4e..3672f731f03a 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -134,10 +134,25 @@ static inline void set_freezable_with_signal(void) } /* - * Freezer-friendly wrappers around wait_event_interruptible() and - * wait_event_interruptible_timeout(), originally defined in + * Freezer-friendly wrappers around wait_event_interruptible(), + * wait_event_killable() and wait_event_interruptible_timeout(), originally + * defined in */ +#define wait_event_freezekillable(wq, condition) \ +({ \ + int __retval; \ + do { \ + __retval = wait_event_killable(wq, \ + (condition) || freezing(current)); \ + if (__retval && !freezing(current)) \ + break; \ + else if (!(condition)) \ + __retval = -ERESTARTSYS; \ + } while (try_to_freeze()); \ + __retval; \ +}) + #define wait_event_freezable(wq, condition) \ ({ \ int __retval; \ -- cgit v1.2.2 From 3d153a7c8b23031df35e61377c0600a6c96a8b0b Mon Sep 17 00:00:00 2001 From: Andy Fleming Date: Thu, 13 Oct 2011 04:33:54 +0000 Subject: net: Allow skb_recycle_check to be done in stages skb_recycle_check resets the skb if it's eligible for recycling. However, there are times when a driver might want to optionally manipulate the skb data with the skb before resetting the skb, but after it has determined eligibility. We do this by splitting the eligibility check from the skb reset, creating two inline functions to accomplish that task. Signed-off-by: Andy Fleming Acked-by: David Daney Signed-off-by: David S. Miller --- include/linux/skbuff.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6fcbbbd12ceb..77ddf2de712f 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -550,6 +550,7 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size, return __alloc_skb(size, priority, 1, NUMA_NO_NODE); } +extern void skb_recycle(struct sk_buff *skb); extern bool skb_recycle_check(struct sk_buff *skb, int skb_size); extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); @@ -2484,5 +2485,25 @@ static inline void skb_checksum_none_assert(struct sk_buff *skb) bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off); +static inline bool skb_is_recycleable(struct sk_buff *skb, int skb_size) +{ + if (irqs_disabled()) + return false; + + if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) + return false; + + if (skb_is_nonlinear(skb) || skb->fclone != SKB_FCLONE_UNAVAILABLE) + return false; + + skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD); + if (skb_end_pointer(skb) - skb->head < skb_size) + return false; + + if (skb_shared(skb) || skb_cloned(skb)) + return false; + + return true; +} #endif /* __KERNEL__ */ #endif /* _LINUX_SKBUFF_H */ -- cgit v1.2.2 From a1940805d0636c6cdf37636f55b43b9681d53e73 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 19 Oct 2011 12:17:29 -0700 Subject: NFS: Get rid of the unused nfs_read_data->flags field Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 1e31e1c8655b..c1cceb83f709 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1133,7 +1133,6 @@ struct nfs_page; #define NFS_PAGEVEC_SIZE (8U) struct nfs_read_data { - int flags; struct rpc_task task; struct inode *inode; struct rpc_cred *cred; -- cgit v1.2.2 From b8ef70639b609c5d12c618f1d9ffae6ac13aebe3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 19 Oct 2011 12:17:29 -0700 Subject: NFS: Get rid of the unused nfs_write_data->flags field Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index c1cceb83f709..c74595ba7094 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1155,7 +1155,6 @@ struct nfs_read_data { }; struct nfs_write_data { - int flags; struct rpc_task task; struct inode *inode; struct rpc_cred *cred; -- cgit v1.2.2 From fba730050d1246d0e6ef44e026e0b584732fec2b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 19 Oct 2011 12:17:29 -0700 Subject: NFS: Don't rely on PageError in nfs_readpage_release_partial Don't rely on the PageError flag to tell us if one of the partial reads of the page failed. Instead, replace that with a dedicated flag in the struct nfs_page. Then clean out redundant uses of the PageError flag: the VM no longer checks it for reads. Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index e2791a27a901..ab465fe8c3d6 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -34,6 +34,7 @@ enum { PG_NEED_COMMIT, PG_NEED_RESCHED, PG_PNFS_COMMIT, + PG_PARTIAL_READ_FAILED, }; struct nfs_inode; -- cgit v1.2.2 From 4dc360c5e7e155373bffbb3c1f7ea0022dee650c Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Wed, 19 Oct 2011 17:00:35 -0400 Subject: net: validate HWTSTAMP ioctl parameters This patch adds a sanity check on the values provided by user space for the hardware time stamping configuration. If the values lie outside of the absolute limits, then the ioctl request will be denied. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- include/linux/net_tstamp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h index 3df0984cd0d5..ae5df122e42f 100644 --- a/include/linux/net_tstamp.h +++ b/include/linux/net_tstamp.h @@ -45,7 +45,7 @@ struct hwtstamp_config { }; /* possible values for hwtstamp_config->tx_type */ -enum { +enum hwtstamp_tx_types { /* * No outgoing packet will need hardware time stamping; * should a packet arrive which asks for it, no hardware @@ -72,7 +72,7 @@ enum { }; /* possible values for hwtstamp_config->rx_filter */ -enum { +enum hwtstamp_rx_filters { /* time stamp no incoming packet at all */ HWTSTAMP_FILTER_NONE, -- cgit v1.2.2 From 487505c257021fc06a7d05753cf27b011487f1dc Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 12 Oct 2011 21:53:38 +0000 Subject: sysfs: Implement support for tagged files in sysfs. Looking up files in sysfs is hard to understand and analyize because we currently allow placing untagged files in tagged directories. In the implementation of that we have two subtly different meanings of NULL. NULL meaning there is no tag on a directory entry and NULL meaning we don't care which namespace the lookup is performed for. This multiple uses of NULL have resulted in subtle bugs (since fixed) in the code. Currently it is only the bonding driver that needs to have an untagged file in a tagged directory. To untagle this mess I am adding support for tagged files to sysfs. Modifying the bonding driver to implement bonding_masters as a tagged file. Registering bonding_masters once for each network namespace. Then I am removing support for untagged entries in tagged sysfs directories. Resulting in code that is much easier to reason about. Signed-off-by: Eric W. Biederman Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- include/linux/sysfs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index d7d2f2158142..dac0859e6440 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -112,6 +112,7 @@ struct bin_attribute { struct sysfs_ops { ssize_t (*show)(struct kobject *, struct attribute *,char *); ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); + const void *(*namespace)(struct kobject *, const struct attribute *); }; struct sysfs_dirent; -- cgit v1.2.2 From 672d82c18d222e51b40ff47e660fc54ec3e3e0a9 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 12 Oct 2011 21:55:08 +0000 Subject: class: Implement support for class attrs in tagged sysfs directories. Signed-off-by: Eric W. Biederman Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- include/linux/device.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index c20dfbfc49b4..ea70bb2e6878 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -350,6 +350,8 @@ struct class_attribute { char *buf); ssize_t (*store)(struct class *class, struct class_attribute *attr, const char *buf, size_t count); + const void *(*namespace)(struct class *class, + const struct class_attribute *attr); }; #define CLASS_ATTR(_name, _mode, _show, _store) \ -- cgit v1.2.2 From 4f25af27827080c3163e59c7af1ca84a05ce121c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 17 Oct 2011 21:04:20 +0000 Subject: filter: use unsigned int to silence static checker warning This is just a cleanup. My testing version of Smatch warns about this: net/core/filter.c +380 check_load_and_stores(6) warn: check 'flen' for negative values flen comes from the user. We try to clamp the values here between 1 and BPF_MAXINSNS but the clamp doesn't work because it could be negative. This is a bug, but it's not exploitable. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- include/linux/filter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 741956fa5bfd..8eeb205f298b 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -155,7 +155,7 @@ extern unsigned int sk_run_filter(const struct sk_buff *skb, const struct sock_filter *filter); extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk); extern int sk_detach_filter(struct sock *sk); -extern int sk_chk_filter(struct sock_filter *filter, int flen); +extern int sk_chk_filter(struct sock_filter *filter, unsigned int flen); #ifdef CONFIG_BPF_JIT extern void bpf_jit_compile(struct sk_filter *fp); -- cgit v1.2.2 From a0bec1cd8f7ac966f2885f7e56ec44df87bab738 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Tue, 18 Oct 2011 22:55:11 +0000 Subject: net: do not take an additional reference in skb_frag_set_page I audited all of the callers in the tree and only one of them (pktgen) expects it to do so. Taking this reference is pretty obviously confusing and error prone. In particular I looked at the following commits which switched callers of (__)skb_frag_set_page to the skb paged fragment api: 6a930b9f163d7e6d9ef692e05616c4ede65038ec cxgb3: convert to SKB paged frag API. 5dc3e196ea21e833128d51eb5b788a070fea1f28 myri10ge: convert to SKB paged frag API. 0e0634d20dd670a89af19af2a686a6cce943ac14 vmxnet3: convert to SKB paged frag API. 86ee8130a46769f73f8f423f99dbf782a09f9233 virtionet: convert to SKB paged frag API. 4a22c4c919c201c2a7f4ee09e672435a3072d875 sfc: convert to SKB paged frag API. 18324d690d6a5028e3c174fc1921447aedead2b8 cassini: convert to SKB paged frag API. b061b39e3ae18ad75466258cf2116e18fa5bbd80 benet: convert to SKB paged frag API. b7b6a688d217936459ff5cf1087b2361db952509 bnx2: convert to SKB paged frag API. 804cf14ea5ceca46554d5801e2817bba8116b7e5 net: xfrm: convert to SKB frag APIs ea2ab69379a941c6f8884e290fdd28c93936a778 net: convert core to skb paged frag APIs Signed-off-by: Ian Campbell Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 77ddf2de712f..1ebf1ea29d60 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1786,7 +1786,6 @@ static inline void *skb_frag_address_safe(const skb_frag_t *frag) static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page) { frag->page = page; - __skb_frag_ref(frag); } /** -- cgit v1.2.2 From b957ae9c53d5715a07f8bac644d8ff0a407c7e07 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 19 Oct 2011 21:27:11 -0500 Subject: [CIFS] Fixup trivial checkpatch warning Signed-off-by: Steve French --- include/linux/freezer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index 3672f731f03a..a1555618801d 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -143,7 +143,7 @@ static inline void set_freezable_with_signal(void) ({ \ int __retval; \ do { \ - __retval = wait_event_killable(wq, \ + __retval = wait_event_killable(wq, \ (condition) || freezing(current)); \ if (__retval && !freezing(current)) \ break; \ -- cgit v1.2.2 From 30d3c128eafd2277ca2bb4b62845f25ad9295c12 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Thu, 20 Oct 2011 04:58:32 -0400 Subject: mm: add a "struct page_frag" type containing a page, offset and length A few network drivers currently use skb_frag_struct for this purpose but I have patches which add additional fields and semantics there which these other uses do not want. A structure for reference sub-page regions seems like a generally useful thing so do so instead of adding a network subsystem specific structure. Signed-off-by: Ian Campbell Acked-by: Jens Axboe Acked-by: David Rientjes Signed-off-by: David S. Miller --- include/linux/mm_types.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 774b8952deb4..29971a589ff2 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -135,6 +135,17 @@ struct page { #endif ; +struct page_frag { + struct page *page; +#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536) + __u32 offset; + __u32 size; +#else + __u16 offset; + __u16 size; +#endif +}; + typedef unsigned long __nocast vm_flags_t; /* -- cgit v1.2.2 From a5818a8bd095a08cfb1871b63af9c8bed103e4b9 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 19 Oct 2011 16:19:25 -0600 Subject: pinctrl: get_group_pins() const fixes get_group_pins() "returns" a pointer to an array of const objects, through a pointer parameter. Fix the prototype so what's pointed at by the returned pointer is const, rather than the function parameter being const. This also allows the removal of a cast in each of the two current pinmux drivers. Signed-off-by: Stephen Warren Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 4f8d2089acce..3605e947fa90 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -75,8 +75,8 @@ struct pinctrl_ops { unsigned selector); int (*get_group_pins) (struct pinctrl_dev *pctldev, unsigned selector, - unsigned ** const pins, - unsigned * const num_pins); + const unsigned **pins, + unsigned *num_pins); void (*pin_dbg_show) (struct pinctrl_dev *pctldev, struct seq_file *s, unsigned offset); }; -- cgit v1.2.2 From 05bdd2f14351176d368e8ddc67993690a2d1bfb6 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 20 Oct 2011 17:45:43 -0400 Subject: net: constify skbuff and Qdisc elements Preliminary patch before tcp constification Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 1ebf1ea29d60..3411f22e7d16 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -853,9 +853,9 @@ static inline struct sk_buff *skb_unshare(struct sk_buff *skb, * The reference count is not incremented and the reference is therefore * volatile. Use with caution. */ -static inline struct sk_buff *skb_peek(struct sk_buff_head *list_) +static inline struct sk_buff *skb_peek(const struct sk_buff_head *list_) { - struct sk_buff *list = ((struct sk_buff *)list_)->next; + struct sk_buff *list = ((const struct sk_buff *)list_)->next; if (list == (struct sk_buff *)list_) list = NULL; return list; @@ -874,9 +874,9 @@ static inline struct sk_buff *skb_peek(struct sk_buff_head *list_) * The reference count is not incremented and the reference is therefore * volatile. Use with caution. */ -static inline struct sk_buff *skb_peek_tail(struct sk_buff_head *list_) +static inline struct sk_buff *skb_peek_tail(const struct sk_buff_head *list_) { - struct sk_buff *list = ((struct sk_buff *)list_)->prev; + struct sk_buff *list = ((const struct sk_buff *)list_)->prev; if (list == (struct sk_buff *)list_) list = NULL; return list; @@ -1830,7 +1830,7 @@ static inline dma_addr_t skb_frag_dma_map(struct device *dev, * Returns true if modifying the header part of the cloned buffer * does not requires the data to be copied. */ -static inline int skb_clone_writable(struct sk_buff *skb, unsigned int len) +static inline int skb_clone_writable(const struct sk_buff *skb, unsigned int len) { return !skb_header_cloned(skb) && skb_headroom(skb) + len <= skb->hdr_len; @@ -2451,7 +2451,8 @@ static inline bool skb_warn_if_lro(const struct sk_buff *skb) { /* LRO sets gso_size but not gso_type, whereas if GSO is really * wanted then gso_type will be set. */ - struct skb_shared_info *shinfo = skb_shinfo(skb); + const struct skb_shared_info *shinfo = skb_shinfo(skb); + if (skb_is_nonlinear(skb) && shinfo->gso_size != 0 && unlikely(shinfo->gso_type == 0)) { __skb_warn_lro_forwarding(skb); @@ -2475,7 +2476,7 @@ static inline void skb_forward_csum(struct sk_buff *skb) * Instead of forcing ip_summed to CHECKSUM_NONE, we can * use this helper, to document places where we make this assertion. */ -static inline void skb_checksum_none_assert(struct sk_buff *skb) +static inline void skb_checksum_none_assert(const struct sk_buff *skb) { #ifdef DEBUG BUG_ON(skb->ip_summed != CHECKSUM_NONE); @@ -2484,7 +2485,7 @@ static inline void skb_checksum_none_assert(struct sk_buff *skb) bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off); -static inline bool skb_is_recycleable(struct sk_buff *skb, int skb_size) +static inline bool skb_is_recycleable(const struct sk_buff *skb, int skb_size) { if (irqs_disabled()) return false; -- cgit v1.2.2 From 6cc7a765c2987f03ba278dac03c7cc759ee198e7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= Date: Thu, 20 Oct 2011 18:21:36 -0400 Subject: net: allow CAP_NET_RAW to set socket options IP{,V6}_TRANSPARENT MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Up till now the IP{,V6}_TRANSPARENT socket options (which actually set the same bit in the socket struct) have required CAP_NET_ADMIN privileges to set or clear the option. - we make clearing the bit not require any privileges. - we allow CAP_NET_ADMIN to set the bit (as before this change) - we allow CAP_NET_RAW to set this bit, because raw sockets already pretty much effectively allow you to emulate socket transparency. Signed-off-by: Maciej Żenczykowski Signed-off-by: David S. Miller --- include/linux/capability.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index c42112350003..a63d13d84ad8 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -198,7 +198,7 @@ struct cpu_vfs_cap_data { /* Allow modification of routing tables */ /* Allow setting arbitrary process / process group ownership on sockets */ -/* Allow binding to any address for transparent proxying */ +/* Allow binding to any address for transparent proxying (also via NET_RAW) */ /* Allow setting TOS (type of service) */ /* Allow setting promiscuous mode */ /* Allow clearing driver statistics */ @@ -210,6 +210,7 @@ struct cpu_vfs_cap_data { /* Allow use of RAW sockets */ /* Allow use of PACKET sockets */ +/* Allow binding to any address for transparent proxying (also via NET_ADMIN) */ #define CAP_NET_RAW 13 -- cgit v1.2.2 From 24dd85ff723f142093f44244764b9b5c152235b8 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 28 Sep 2011 11:57:23 +0200 Subject: io-mapping: ensure io_mapping_map_atomic _is_ atomic For the !HAVE_ATOMIC_IOMAP case the stub functions did not call pagefault_disable/_enable. The i915 driver relies on the map actually being atomic, otherwise it can deadlock with it's own pagefault handler in the gtt pwrite fastpath. This is exercised by gem_mmap_gtt from the intel-gpu-toosl gem testsuite. v2: Chris Wilson noted the lack of an include. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38115 Cc: stable@kernel.org Signed-off-by: Daniel Vetter Reviewed-by: Chris Wilson Signed-off-by: Keith Packard --- include/linux/io-mapping.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index 8cdcc2a199ad..1feeb5263565 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -117,6 +117,8 @@ io_mapping_unmap(void __iomem *vaddr) #else +#include + /* this struct isn't actually defined anywhere */ struct io_mapping; @@ -138,12 +140,14 @@ static inline void __iomem * io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) { + pagefault_disable(); return ((char __force __iomem *) mapping) + offset; } static inline void io_mapping_unmap_atomic(void __iomem *vaddr) { + pagefault_enable(); } /* Non-atomic map/unmap */ -- cgit v1.2.2 From a8605c6063f785858c1bc431d0bfe66c41e71cfa Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Wed, 19 Oct 2011 23:01:49 +0000 Subject: net: add opaque struct around skb frag page I've split this bit out of the skb frag destructor patch since it helps enforce the use of the fragment API. Signed-off-by: Ian Campbell Signed-off-by: David S. Miller --- include/linux/skbuff.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 3411f22e7d16..94a23ffcc073 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -140,7 +140,9 @@ struct sk_buff; typedef struct skb_frag_struct skb_frag_t; struct skb_frag_struct { - struct page *page; + struct { + struct page *p; + } page; #if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536) __u32 page_offset; __u32 size; @@ -1175,7 +1177,7 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i, { skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - frag->page = page; + frag->page.p = page; frag->page_offset = off; skb_frag_size_set(frag, size); } @@ -1699,7 +1701,7 @@ static inline void netdev_free_page(struct net_device *dev, struct page *page) */ static inline struct page *skb_frag_page(const skb_frag_t *frag) { - return frag->page; + return frag->page.p; } /** @@ -1785,7 +1787,7 @@ static inline void *skb_frag_address_safe(const skb_frag_t *frag) */ static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page) { - frag->page = page; + frag->page.p = page; } /** -- cgit v1.2.2 From e09eff7fc1c6f011f7bdb304e10d2ceef08c88ab Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 20 Oct 2011 04:29:24 +0000 Subject: macvtap: Fix the minor device number allocation On systems that create and delete lots of dynamic devices the 31bit linux ifindex fails to fit in the 16bit macvtap minor, resulting in unusable macvtap devices. I have systems running automated tests that that hit this condition in just a few days. Use a linux idr allocator to track which mavtap minor numbers are available and and to track the association between macvtap minor numbers and macvtap network devices. Remove the unnecessary unneccessary check to see if the network device we have found is indeed a macvtap device. With macvtap specific data structures it is impossible to find any other kind of networking device. Increase the macvtap minor range from 65536 to the full 20 bits that is supported by linux device numbers. It doesn't solve the original problem but there is no penalty for a larger minor device range. Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller --- include/linux/if_macvlan.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h index e28b2e4959d4..d103dca5c563 100644 --- a/include/linux/if_macvlan.h +++ b/include/linux/if_macvlan.h @@ -64,6 +64,7 @@ struct macvlan_dev { int (*forward)(struct net_device *dev, struct sk_buff *skb); struct macvtap_queue *taps[MAX_MACVTAP_QUEUES]; int numvtaps; + int minor; }; static inline void macvlan_count_rx(const struct macvlan_dev *vlan, -- cgit v1.2.2 From 64a947b1337b93061da7c7af1f6ce6b2431b70ae Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:21:26 +0200 Subject: crypto: Add a flag to identify crypto instances The upcomming crypto user configuration api needs to identify crypto instances. This patch adds a flag that is set if the algorithm is an instance that is build from templates. Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/crypto.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/crypto.h b/include/linux/crypto.h index e5e468e9133d..de9adec5693c 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -71,6 +71,11 @@ #define CRYPTO_ALG_TESTED 0x00000400 +/* + * Set if the algorithm is an instance that is build from templates. + */ +#define CRYPTO_ALG_INSTANCE 0x00000800 + /* * Transform masks and values (for crt_flags). */ -- cgit v1.2.2 From a38f7907b926e4c6c7d389ad96cc38cec2e5a9e9 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:23:50 +0200 Subject: crypto: Add userspace configuration API This patch adds a basic userspace configuration API for the crypto layer. With this it is possible to instantiate, remove and to show crypto algorithms from userspace. Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/netlink.h | 1 + 2 files changed, 53 insertions(+) create mode 100644 include/linux/cryptouser.h (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h new file mode 100644 index 000000000000..b874e3879d81 --- /dev/null +++ b/include/linux/cryptouser.h @@ -0,0 +1,52 @@ +/* + * Crypto user configuration API. + * + * Copyright (C) 2011 secunet Security Networks AG + * Copyright (C) 2011 Steffen Klassert + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* Netlink configuration messages. */ +enum { + CRYPTO_MSG_BASE = 0x10, + CRYPTO_MSG_NEWALG = 0x10, + CRYPTO_MSG_DELALG, + CRYPTO_MSG_UPDATEALG, + CRYPTO_MSG_GETALG, + __CRYPTO_MSG_MAX +}; +#define CRYPTO_MSG_MAX (__CRYPTO_MSG_MAX - 1) +#define CRYPTO_NR_MSGTYPES (CRYPTO_MSG_MAX + 1 - CRYPTO_MSG_BASE) + +#define CRYPTO_MAX_NAME CRYPTO_MAX_ALG_NAME + +/* Netlink message attributes. */ +enum crypto_attr_type_t { + CRYPTOCFGA_UNSPEC, + CRYPTOCFGA_PRIORITY_VAL, /* __u32 */ + __CRYPTOCFGA_MAX + +#define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) +}; + +struct crypto_user_alg { + char cru_name[CRYPTO_MAX_ALG_NAME]; + char cru_driver_name[CRYPTO_MAX_ALG_NAME]; + char cru_module_name[CRYPTO_MAX_ALG_NAME]; + __u32 cru_type; + __u32 cru_mask; + __u32 cru_refcnt; + __u32 cru_flags; +}; diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 2e17c5dbdcb8..464ace04283b 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -25,6 +25,7 @@ #define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */ #define NETLINK_ECRYPTFS 19 #define NETLINK_RDMA 20 +#define NETLINK_CRYPTO 21 /* Crypto layer */ #define MAX_LINKS 32 -- cgit v1.2.2 From 6c5a86f529a9e9ca4c9aca5fa477e9557d4a3d3d Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:25:05 +0200 Subject: crypto: Add userspace report for larval type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index b874e3879d81..7a849b4c3b82 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -36,6 +36,7 @@ enum { enum crypto_attr_type_t { CRYPTOCFGA_UNSPEC, CRYPTOCFGA_PRIORITY_VAL, /* __u32 */ + CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -50,3 +51,7 @@ struct crypto_user_alg { __u32 cru_refcnt; __u32 cru_flags; }; + +struct crypto_report_larval { + char type[CRYPTO_MAX_NAME]; +}; -- cgit v1.2.2 From f4d663ce6357e533f107ce3789bd8848c94bea81 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:26:10 +0200 Subject: crypto: Add userspace report for shash type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index 7a849b4c3b82..ee4688221975 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -37,6 +37,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_UNSPEC, CRYPTOCFGA_PRIORITY_VAL, /* __u32 */ CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */ + CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -55,3 +56,9 @@ struct crypto_user_alg { struct crypto_report_larval { char type[CRYPTO_MAX_NAME]; }; + +struct crypto_report_hash { + char type[CRYPTO_MAX_NAME]; + unsigned int blocksize; + unsigned int digestsize; +}; -- cgit v1.2.2 From 50496a1fab6c6a90b77da4b247321a88e632bd46 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:41:54 +0200 Subject: crypto: Add userspace report for blkcipher type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index ee4688221975..a96a1a11ee66 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -38,6 +38,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_PRIORITY_VAL, /* __u32 */ CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */ CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */ + CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -62,3 +63,12 @@ struct crypto_report_hash { unsigned int blocksize; unsigned int digestsize; }; + +struct crypto_report_blkcipher { + char type[CRYPTO_MAX_NAME]; + char geniv[CRYPTO_MAX_NAME]; + unsigned int blocksize; + unsigned int min_keysize; + unsigned int max_keysize; + unsigned int ivsize; +}; -- cgit v1.2.2 From 6ad414fe710d4fd3a8c8c6c2ad8fefcfcc207968 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:44:27 +0200 Subject: crypto: Add userspace report for aead type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index a96a1a11ee66..48030c7dfb51 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -39,6 +39,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */ CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */ CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */ + CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -72,3 +73,11 @@ struct crypto_report_blkcipher { unsigned int max_keysize; unsigned int ivsize; }; + +struct crypto_report_aead { + char type[CRYPTO_MAX_NAME]; + char geniv[CRYPTO_MAX_NAME]; + unsigned int blocksize; + unsigned int maxauthsize; + unsigned int ivsize; +}; -- cgit v1.2.2 From a55465dca7befd31f4ffa54508d4e2d1e701b8dc Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:46:32 +0200 Subject: crypto: Add userspace report for pcompress type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index 48030c7dfb51..c8c1dfcb7cf2 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -40,6 +40,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */ CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */ CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ + CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -81,3 +82,7 @@ struct crypto_report_aead { unsigned int maxauthsize; unsigned int ivsize; }; + +struct crypto_report_comp { + char type[CRYPTO_MAX_NAME]; +}; -- cgit v1.2.2 From 792608e9c215141fa4b870b7b2a23767a1ef12f4 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:47:11 +0200 Subject: crypto: Add userspace report for rng type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index c8c1dfcb7cf2..ed8a40e8fb6b 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -41,6 +41,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */ CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */ + CRYPTOCFGA_REPORT_RNG, /* struct crypto_report_rng */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -86,3 +87,8 @@ struct crypto_report_aead { struct crypto_report_comp { char type[CRYPTO_MAX_NAME]; }; + +struct crypto_report_rng { + char type[CRYPTO_MAX_NAME]; + unsigned int seedsize; +}; -- cgit v1.2.2 From 07a5fa4abd8b6965d4585d3b110f89bdf5612aff Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:48:01 +0200 Subject: crypto: Add userspace report for cipher type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- include/linux/cryptouser.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index ed8a40e8fb6b..532fb58f16bf 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -42,6 +42,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */ CRYPTOCFGA_REPORT_RNG, /* struct crypto_report_rng */ + CRYPTOCFGA_REPORT_CIPHER, /* struct crypto_report_cipher */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -67,6 +68,13 @@ struct crypto_report_hash { unsigned int digestsize; }; +struct crypto_report_cipher { + char type[CRYPTO_MAX_ALG_NAME]; + unsigned int blocksize; + unsigned int min_keysize; + unsigned int max_keysize; +}; + struct crypto_report_blkcipher { char type[CRYPTO_MAX_NAME]; char geniv[CRYPTO_MAX_NAME]; -- cgit v1.2.2 From 39d4ebb95925046863dc0ef2698dfcf2c1f1dcbe Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 6 Sep 2011 16:48:40 +0200 Subject: iommu/core: Define iommu_ops and register_iommu only with CONFIG_IOMMU_API This makes it impossible to compile an iommu driver into the kernel without selecting CONFIG_IOMMU_API. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 9940319d6f9d..6470cd87b4ea 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -34,6 +34,8 @@ struct iommu_domain { #define IOMMU_CAP_CACHE_COHERENCY 0x1 #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ +#ifdef CONFIG_IOMMU_API + struct iommu_ops { int (*domain_init)(struct iommu_domain *domain); void (*domain_destroy)(struct iommu_domain *domain); @@ -49,8 +51,6 @@ struct iommu_ops { unsigned long cap); }; -#ifdef CONFIG_IOMMU_API - extern void register_iommu(struct iommu_ops *ops); extern bool iommu_found(void); extern struct iommu_domain *iommu_domain_alloc(void); @@ -70,9 +70,7 @@ extern int iommu_domain_has_cap(struct iommu_domain *domain, #else /* CONFIG_IOMMU_API */ -static inline void register_iommu(struct iommu_ops *ops) -{ -} +struct iommu_ops {}; static inline bool iommu_found(void) { -- cgit v1.2.2 From ff21776d12ff7993a6b236b8273ef62777d25dfb Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 26 Aug 2011 16:48:26 +0200 Subject: Driver core: Add iommu_ops to bus_type This is the starting point to make the iommu_ops used for the iommu-api a per-bus-type structure. It is required to easily implement bus-specific setup in the iommu-layer. The first user will be the iommu-group attribute in sysfs. Acked-by: Greg Kroah-Hartman Signed-off-by: Joerg Roedel --- include/linux/device.h | 6 ++++++ include/linux/iommu.h | 2 ++ 2 files changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index c20dfbfc49b4..e838e143baa7 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -33,6 +33,7 @@ struct class; struct subsys_private; struct bus_type; struct device_node; +struct iommu_ops; struct bus_attribute { struct attribute attr; @@ -67,6 +68,9 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *); * @resume: Called to bring a device on this bus out of sleep mode. * @pm: Power management operations of this bus, callback the specific * device driver's pm-ops. + * @iommu_ops IOMMU specific operations for this bus, used to attach IOMMU + * driver implementations to a bus and allow the driver to do + * bus-specific setup * @p: The private data of the driver core, only the driver core can * touch this. * @@ -96,6 +100,8 @@ struct bus_type { const struct dev_pm_ops *pm; + struct iommu_ops *iommu_ops; + struct subsys_private *p; }; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 6470cd87b4ea..dca83d3405b1 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -25,6 +25,7 @@ #define IOMMU_WRITE (2) #define IOMMU_CACHE (4) /* DMA cache coherency */ +struct bus_type; struct device; struct iommu_domain { @@ -52,6 +53,7 @@ struct iommu_ops { }; extern void register_iommu(struct iommu_ops *ops); +extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); extern bool iommu_found(void); extern struct iommu_domain *iommu_domain_alloc(void); extern void iommu_domain_free(struct iommu_domain *domain); -- cgit v1.2.2 From 905d66c1e5dc8149e111f04a32bb193f25da1d53 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 6 Sep 2011 16:03:26 +0200 Subject: iommu/core: Add bus_type parameter to iommu_domain_alloc This is necessary to store a pointer to the bus-specific iommu_ops in the iommu-domain structure. It will be used later to call into bus-specific iommu-ops. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index dca83d3405b1..c78d068930b7 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -25,10 +25,12 @@ #define IOMMU_WRITE (2) #define IOMMU_CACHE (4) /* DMA cache coherency */ +struct iommu_ops; struct bus_type; struct device; struct iommu_domain { + struct iommu_ops *ops; void *priv; }; @@ -55,7 +57,7 @@ struct iommu_ops { extern void register_iommu(struct iommu_ops *ops); extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); extern bool iommu_found(void); -extern struct iommu_domain *iommu_domain_alloc(void); +extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); extern void iommu_domain_free(struct iommu_domain *domain); extern int iommu_attach_device(struct iommu_domain *domain, struct device *dev); @@ -79,7 +81,7 @@ static inline bool iommu_found(void) return false; } -static inline struct iommu_domain *iommu_domain_alloc(void) +static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { return NULL; } -- cgit v1.2.2 From a1b60c1cd913c5ccfb38c717ba0bd22622425fa7 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 6 Sep 2011 18:46:34 +0200 Subject: iommu/core: Convert iommu_found to iommu_present With per-bus iommu_ops the iommu_found function needs to work on a bus_type too. This patch adds a bus_type parameter to that function and converts all call-places. The function is also renamed to iommu_present because the function now checks if an iommu is present for a given bus and does not check for a global iommu anymore. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index c78d068930b7..f56e559442a2 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -56,7 +56,7 @@ struct iommu_ops { extern void register_iommu(struct iommu_ops *ops); extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); -extern bool iommu_found(void); +extern bool iommu_present(struct bus_type *bus); extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); extern void iommu_domain_free(struct iommu_domain *domain); extern int iommu_attach_device(struct iommu_domain *domain, @@ -76,7 +76,7 @@ extern int iommu_domain_has_cap(struct iommu_domain *domain, struct iommu_ops {}; -static inline bool iommu_found(void) +static inline bool iommu_present(struct bus_type *bus) { return false; } -- cgit v1.2.2 From 94441c3bd99287b9d84f148a08cc9a44675ec749 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 6 Sep 2011 18:58:54 +0200 Subject: iommu/core: Remove global iommu_ops and register_iommu With all IOMMU drivers being converted to bus_set_iommu the global iommu_ops are no longer required. The same is true for the deprecated register_iommu function. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f56e559442a2..609ebf6bbe0c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -54,7 +54,6 @@ struct iommu_ops { unsigned long cap); }; -extern void register_iommu(struct iommu_ops *ops); extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); extern bool iommu_present(struct bus_type *bus); extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); -- cgit v1.2.2 From 4ca46ff3e0d8c234cb40ebb6457653b59584426c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Oct 2011 23:34:36 +0200 Subject: PM / Sleep: Mark devices involved in wakeup signaling during suspend The generic PM domains code in drivers/base/power/domain.c has to avoid powering off domains that provide power to wakeup devices during system suspend. Currently, however, this only works for wakeup devices directly belonging to the given domain and not for their children (or the children of their children and so on). Thus, if there's a wakeup device whose parent belongs to a power domain handled by the generic PM domains code, the domain will be powered off during system suspend preventing the device from signaling wakeup. To address this problem introduce a device flag, power.wakeup_path, that will be set during system suspend for all wakeup devices, their parents, the parents of their parents and so on. This way, all wakeup paths in the device hierarchy will be marked and the generic PM domains code will only need to avoid powering off domains containing devices whose power.wakeup_path is set. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index f25682477f08..74711a9c2f69 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -448,6 +448,7 @@ struct dev_pm_info { struct list_head entry; struct completion completion; struct wakeup_source *wakeup; + bool wakeup_path:1; #else unsigned int should_wakeup:1; #endif -- cgit v1.2.2 From 8f9f4668b37bcc877156dd525a856055735c8d24 Mon Sep 17 00:00:00 2001 From: Rick Jones Date: Wed, 19 Oct 2011 08:10:59 +0000 Subject: Add ethtool -g support to virtio_net Add support for reporting ring sizes via ethtool -g to the virtio_net driver. Signed-off-by: Rick Jones Acked-by: Rusty Russell Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- include/linux/virtio.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 710885749605..851ebf1a4476 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -61,6 +61,9 @@ struct virtqueue { * virtqueue_detach_unused_buf: detach first unused buffer * vq: the struct virtqueue we're talking about. * Returns NULL or the "data" token handed to add_buf + * virtqueue_get_vring_size: return the size of the virtqueue's vring + * vq: the struct virtqueue containing the vring of interest. + * Returns the size of the vring. * * Locking rules are straightforward: the driver is responsible for * locking. No two operations may be invoked simultaneously, with the exception @@ -97,6 +100,8 @@ bool virtqueue_enable_cb_delayed(struct virtqueue *vq); void *virtqueue_detach_unused_buf(struct virtqueue *vq); +unsigned int virtqueue_get_vring_size(struct virtqueue *vq); + /** * virtio_device - representation of a device using virtio * @index: unique position on the virtio bus -- cgit v1.2.2 From da92b194cc36b5dc1fbd85206aeeffd80bee0c39 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Fri, 21 Oct 2011 00:49:15 +0000 Subject: net: hold sock reference while processing tx timestamps The pair of functions, * skb_clone_tx_timestamp() * skb_complete_tx_timestamp() were designed to allow timestamping in PHY devices. The first function, called during the MAC driver's hard_xmit method, identifies PTP protocol packets, clones them, and gives them to the PHY device driver. The PHY driver may hold onto the packet and deliver it at a later time using the second function, which adds the packet to the socket's error queue. As pointed out by Johannes, nothing prevents the socket from disappearing while the cloned packet is sitting in the PHY driver awaiting a timestamp. This patch fixes the issue by taking a reference on the socket for each such packet. In addition, the comments regarding the usage of these function are expanded to highlight the rule that PHY drivers must use skb_complete_tx_timestamp() to release the packet, in order to release the socket reference, too. These functions first appeared in v2.6.36. Reported-by: Johannes Berg Signed-off-by: Richard Cochran Cc: Signed-off-by: Eric Dumazet Reviewed-by: Johannes Berg Signed-off-by: David S. Miller --- include/linux/phy.h | 2 +- include/linux/skbuff.h | 7 ++++++- 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/phy.h b/include/linux/phy.h index 54fc4138955f..79f337c47388 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -420,7 +420,7 @@ struct phy_driver { /* * Requests a Tx timestamp for 'skb'. The phy driver promises - * to deliver it to the socket's error queue as soon as a + * to deliver it using skb_complete_tx_timestamp() as soon as a * timestamp becomes available. One of the PTP_CLASS_ values * is passed in 'type'. */ diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8bd383caa363..0f966460a345 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2020,8 +2020,13 @@ static inline bool skb_defer_rx_timestamp(struct sk_buff *skb) /** * skb_complete_tx_timestamp() - deliver cloned skb with tx timestamps * + * PHY drivers may accept clones of transmitted packets for + * timestamping via their phy_driver.txtstamp method. These drivers + * must call this function to return the skb back to the stack, with + * or without a timestamp. + * * @skb: clone of the the original outgoing packet - * @hwtstamps: hardware time stamps + * @hwtstamps: hardware time stamps, may be NULL if not available * */ void skb_complete_tx_timestamp(struct sk_buff *skb, -- cgit v1.2.2 From 6e3ad118041f56db752a5eb2b557517d14592af7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 8 Aug 2011 17:04:40 +0900 Subject: mfd: Convert pcf50633 to use new register map API Signed-off-by: Mark Brown Tested-by: Lars-Peter Clausen Signed-off-by: Samuel Ortiz --- include/linux/mfd/pcf50633/core.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/pcf50633/core.h b/include/linux/mfd/pcf50633/core.h index 50d4a047118d..a80840752b4c 100644 --- a/include/linux/mfd/pcf50633/core.h +++ b/include/linux/mfd/pcf50633/core.h @@ -21,6 +21,7 @@ #include struct pcf50633; +struct regmap; #define PCF50633_NUM_REGULATORS 11 @@ -134,7 +135,7 @@ enum { struct pcf50633 { struct device *dev; - struct i2c_client *i2c_client; + struct regmap *regmap; struct pcf50633_platform_data *pdata; int irq; -- cgit v1.2.2 From bd4a40b57b13907b4fe01b6c605be56d8f3733fe Mon Sep 17 00:00:00 2001 From: Karl Komierowski Date: Wed, 10 Aug 2011 15:09:43 +0200 Subject: mfd: Refactor ab8500 GPADC API, add raw access Refactor the GPADC interface to avoid bugs in calling code: - ab8500_gpadc_[convert|read_raw|ad_to_voltage] clarifies each functions use case, *convert wraps *read_raw, and we can access raw ADC values properly. - Renamed gpadc function arguments from "input" to "channel" to clarify use, so we don't get confused again. Signed-off-by: Kalle Komierowski Reviewed-by: Mattias Wallin Reviewed-by: John Beckett Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500/gpadc.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500/gpadc.h b/include/linux/mfd/ab8500/gpadc.h index 46b954011f16..252966769d93 100644 --- a/include/linux/mfd/ab8500/gpadc.h +++ b/include/linux/mfd/ab8500/gpadc.h @@ -27,6 +27,9 @@ struct ab8500_gpadc; struct ab8500_gpadc *ab8500_gpadc_get(char *name); -int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input); +int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel); +int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel); +int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, + u8 channel, int ad_value); #endif /* _AB8500_GPADC_H */ -- cgit v1.2.2 From 881de67046f424fc3a6e05b1c681c12afd94e802 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 22 Aug 2011 15:43:55 +0200 Subject: mfd: Allow WM8994 LDO enable pulls to be disabled In systems where the LDO enables are always driven (for example, being connected to an always on supply rail or a GPIO which is driven by the CPU even in suspend) then we can disable the pull downs on the LDO for a small power savings. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 2 ++ include/linux/mfd/wm8994/pdata.h | 7 +++++++ 2 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index f0b69cdae41c..5ab71bd76f9c 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -63,6 +63,8 @@ struct wm8994 { void *control_data; + bool ldo_ena_always_driven; + int gpio_base; int irq_base; diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 97cf4f27d647..ea32f306dca6 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -167,6 +167,13 @@ struct wm8994_pdata { /* WM8958 microphone bias configuration */ int micbias[2]; + + /* Disable the internal pull downs on the LDOs if they are + * always driven (eg, connected to an always on supply or + * GPIO that always drives an output. If they float power + * consumption will rise. + */ + bool ldo_ena_always_driven; }; #endif -- cgit v1.2.2 From 3d6271f92e98094584fd1e609a9969cd33e61122 Mon Sep 17 00:00:00 2001 From: Kyle Manna Date: Thu, 11 Aug 2011 22:33:13 -0500 Subject: mfd: Turn on the twl4030-madc MADC clock Without turning the MADC clock on, no MADC conversions occur. $ cat /sys/class/hwmon/hwmon0/device/in8_input [ 53.428436] twl4030_madc twl4030_madc: conversion timeout! cat: read error: Resource temporarily unavailable Signed-off-by: Kyle Manna Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl4030-madc.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/twl4030-madc.h b/include/linux/i2c/twl4030-madc.h index 6427d298fbfc..530e11ba0738 100644 --- a/include/linux/i2c/twl4030-madc.h +++ b/include/linux/i2c/twl4030-madc.h @@ -129,6 +129,10 @@ enum sample_type { #define REG_BCICTL2 0x024 #define TWL4030_BCI_ITHSENS 0x007 +/* Register and bits for GPBR1 register */ +#define TWL4030_REG_GPBR1 0x0c +#define TWL4030_GPBR1_MADC_HFCLK_EN (1 << 7) + struct twl4030_madc_user_parms { int channel; int average; -- cgit v1.2.2 From 01fdaab8ffced1deeee14d9c7d2745f37349484e Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 19 Aug 2011 14:39:40 +0900 Subject: mfd: Wake-up from Suspend MAX8997 support - Support wake-up from suspend-to-ram. - Handle pending interrupt after a resume. - If pdata->wakeup is enabled, by default, the device is assumed to be capable of wakeup (the interrupt pin is connected to a wakeup-source GPIO) and may wakeup the system (MAX8997 has a power button input pin). Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8997-private.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 5ff2400ad46c..3f4deb62d6b0 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -326,7 +326,6 @@ struct max8997_dev { int irq; int ono; int irq_base; - bool wakeup; struct mutex irqlock; int irq_masks_cur[MAX8997_IRQ_GROUP_NR]; int irq_masks_cache[MAX8997_IRQ_GROUP_NR]; -- cgit v1.2.2 From fec316d63219f610e5385f5e54e6c3ea459e58e9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Wed, 24 Aug 2011 15:28:21 +0200 Subject: mfd: Provide a generic version of mc13xxx adc_do_conversion MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is needed to convert the touch driver away from using struct mc13783. Note this patch drops MC13783_ADC0_ADREFMODE. This is unused and doesn't exist on mc13892. Signed-off-by: Uwe Kleine-König Signed-off-by: Samuel Ortiz --- include/linux/mfd/mc13783.h | 35 ++++++++++++++++++----------------- include/linux/mfd/mc13xxx.h | 19 +++++++++++++++++++ 2 files changed, 37 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h index 7d0f3d6a0002..e7a3c0169f63 100644 --- a/include/linux/mfd/mc13783.h +++ b/include/linux/mfd/mc13783.h @@ -89,18 +89,15 @@ static inline int mc13783_irq_ack(struct mc13783 *mc13783, int irq) return mc13xxx_irq_ack(mc13783_to_mc13xxx(mc13783), irq); } -#define MC13783_ADC0 43 -#define MC13783_ADC0_ADREFEN (1 << 10) -#define MC13783_ADC0_ADREFMODE (1 << 11) -#define MC13783_ADC0_TSMOD0 (1 << 12) -#define MC13783_ADC0_TSMOD1 (1 << 13) -#define MC13783_ADC0_TSMOD2 (1 << 14) -#define MC13783_ADC0_ADINC1 (1 << 16) -#define MC13783_ADC0_ADINC2 (1 << 17) - -#define MC13783_ADC0_TSMOD_MASK (MC13783_ADC0_TSMOD0 | \ - MC13783_ADC0_TSMOD1 | \ - MC13783_ADC0_TSMOD2) +#define MC13783_ADC0 MC13XXX_ADC0 +#define MC13783_ADC0_ADREFEN MC13XXX_ADC0_ADREFEN +#define MC13783_ADC0_TSMOD0 MC13XXX_ADC0_TSMOD0 +#define MC13783_ADC0_TSMOD1 MC13XXX_ADC0_TSMOD1 +#define MC13783_ADC0_TSMOD2 MC13XXX_ADC0_TSMOD2 +#define MC13783_ADC0_ADINC1 MC13XXX_ADC0_ADINC1 +#define MC13783_ADC0_ADINC2 MC13XXX_ADC0_ADINC2 + +#define MC13783_ADC0_TSMOD_MASK MC13XXX_ADC0_TSMOD_MASK #define mc13783_regulator_init_data mc13xxx_regulator_init_data #define mc13783_regulator_platform_data mc13xxx_regulator_platform_data @@ -115,12 +112,16 @@ static inline int mc13783_irq_ack(struct mc13783 *mc13783, int irq) #define MC13783_USE_REGULATOR MC13XXX_USE_REGULATOR #define MC13783_USE_LED MC13XXX_USE_LED -#define MC13783_ADC_MODE_TS 1 -#define MC13783_ADC_MODE_SINGLE_CHAN 2 -#define MC13783_ADC_MODE_MULT_CHAN 3 +#define MC13783_ADC_MODE_TS MC13XXX_ADC_MODE_TS +#define MC13783_ADC_MODE_SINGLE_CHAN MC13XXX_ADC_MODE_SINGLE_CHAN +#define MC13783_ADC_MODE_MULT_CHAN MC13XXX_ADC_MODE_MULT_CHAN -int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, - unsigned int channel, unsigned int *sample); +static inline int mc13783_adc_do_conversion(struct mc13783 *mc13783, + unsigned int mode, unsigned int channel, unsigned int *sample) +{ + return mc13xxx_adc_do_conversion(mc13783_to_mc13xxx(mc13783), mode, + channel, sample); +} #define MC13783_REG_SW1A 0 diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index c064beaaccb7..6e7c0ac36d09 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -37,6 +37,9 @@ int mc13xxx_irq_ack(struct mc13xxx *mc13xxx, int irq); int mc13xxx_get_flags(struct mc13xxx *mc13xxx); +int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, + unsigned int mode, unsigned int channel, unsigned int *sample); + #define MC13XXX_IRQ_ADCDONE 0 #define MC13XXX_IRQ_ADCBISDONE 1 #define MC13XXX_IRQ_TS 2 @@ -150,4 +153,20 @@ struct mc13xxx_platform_data { struct mc13xxx_leds_platform_data *leds; }; +#define MC13XXX_ADC_MODE_TS 1 +#define MC13XXX_ADC_MODE_SINGLE_CHAN 2 +#define MC13XXX_ADC_MODE_MULT_CHAN 3 + +#define MC13XXX_ADC0 43 +#define MC13XXX_ADC0_ADREFEN (1 << 10) +#define MC13XXX_ADC0_TSMOD0 (1 << 12) +#define MC13XXX_ADC0_TSMOD1 (1 << 13) +#define MC13XXX_ADC0_TSMOD2 (1 << 14) +#define MC13XXX_ADC0_ADINC1 (1 << 16) +#define MC13XXX_ADC0_ADINC2 (1 << 17) + +#define MC13XXX_ADC0_TSMOD_MASK (MC13XXX_ADC0_TSMOD0 | \ + MC13XXX_ADC0_TSMOD1 | \ + MC13XXX_ADC0_TSMOD2) + #endif /* ifndef __LINUX_MFD_MC13XXX_H */ -- cgit v1.2.2 From b46880e57b4c513adeb2608c3700b352860b5662 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Wed, 24 Aug 2011 15:28:25 +0200 Subject: mfd: Remove mc13783 API functions and symbols MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that all in-tree users are fixed to use the more general mc13xxx API the obsolete stuff can go away. Signed-off-by: Uwe Kleine-König Signed-off-by: Samuel Ortiz --- include/linux/mfd/mc13783.h | 112 -------------------------------------------- 1 file changed, 112 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h index e7a3c0169f63..a8eeda773a7b 100644 --- a/include/linux/mfd/mc13783.h +++ b/include/linux/mfd/mc13783.h @@ -12,118 +12,6 @@ #include -struct mc13783; - -struct mc13xxx *mc13783_to_mc13xxx(struct mc13783 *mc13783); - -static inline void mc13783_lock(struct mc13783 *mc13783) -{ - mc13xxx_lock(mc13783_to_mc13xxx(mc13783)); -} - -static inline void mc13783_unlock(struct mc13783 *mc13783) -{ - mc13xxx_unlock(mc13783_to_mc13xxx(mc13783)); -} - -static inline int mc13783_reg_read(struct mc13783 *mc13783, - unsigned int offset, u32 *val) -{ - return mc13xxx_reg_read(mc13783_to_mc13xxx(mc13783), offset, val); -} - -static inline int mc13783_reg_write(struct mc13783 *mc13783, - unsigned int offset, u32 val) -{ - return mc13xxx_reg_write(mc13783_to_mc13xxx(mc13783), offset, val); -} - -static inline int mc13783_reg_rmw(struct mc13783 *mc13783, - unsigned int offset, u32 mask, u32 val) -{ - return mc13xxx_reg_rmw(mc13783_to_mc13xxx(mc13783), offset, mask, val); -} - -static inline int mc13783_get_flags(struct mc13783 *mc13783) -{ - return mc13xxx_get_flags(mc13783_to_mc13xxx(mc13783)); -} - -static inline int mc13783_irq_request(struct mc13783 *mc13783, int irq, - irq_handler_t handler, const char *name, void *dev) -{ - return mc13xxx_irq_request(mc13783_to_mc13xxx(mc13783), irq, - handler, name, dev); -} - -static inline int mc13783_irq_request_nounmask(struct mc13783 *mc13783, int irq, - irq_handler_t handler, const char *name, void *dev) -{ - return mc13xxx_irq_request_nounmask(mc13783_to_mc13xxx(mc13783), irq, - handler, name, dev); -} - -static inline int mc13783_irq_free(struct mc13783 *mc13783, int irq, void *dev) -{ - return mc13xxx_irq_free(mc13783_to_mc13xxx(mc13783), irq, dev); -} - -static inline int mc13783_irq_mask(struct mc13783 *mc13783, int irq) -{ - return mc13xxx_irq_mask(mc13783_to_mc13xxx(mc13783), irq); -} - -static inline int mc13783_irq_unmask(struct mc13783 *mc13783, int irq) -{ - return mc13xxx_irq_unmask(mc13783_to_mc13xxx(mc13783), irq); -} -static inline int mc13783_irq_status(struct mc13783 *mc13783, int irq, - int *enabled, int *pending) -{ - return mc13xxx_irq_status(mc13783_to_mc13xxx(mc13783), - irq, enabled, pending); -} - -static inline int mc13783_irq_ack(struct mc13783 *mc13783, int irq) -{ - return mc13xxx_irq_ack(mc13783_to_mc13xxx(mc13783), irq); -} - -#define MC13783_ADC0 MC13XXX_ADC0 -#define MC13783_ADC0_ADREFEN MC13XXX_ADC0_ADREFEN -#define MC13783_ADC0_TSMOD0 MC13XXX_ADC0_TSMOD0 -#define MC13783_ADC0_TSMOD1 MC13XXX_ADC0_TSMOD1 -#define MC13783_ADC0_TSMOD2 MC13XXX_ADC0_TSMOD2 -#define MC13783_ADC0_ADINC1 MC13XXX_ADC0_ADINC1 -#define MC13783_ADC0_ADINC2 MC13XXX_ADC0_ADINC2 - -#define MC13783_ADC0_TSMOD_MASK MC13XXX_ADC0_TSMOD_MASK - -#define mc13783_regulator_init_data mc13xxx_regulator_init_data -#define mc13783_regulator_platform_data mc13xxx_regulator_platform_data -#define mc13783_led_platform_data mc13xxx_led_platform_data -#define mc13783_leds_platform_data mc13xxx_leds_platform_data - -#define mc13783_platform_data mc13xxx_platform_data -#define MC13783_USE_TOUCHSCREEN MC13XXX_USE_TOUCHSCREEN -#define MC13783_USE_CODEC MC13XXX_USE_CODEC -#define MC13783_USE_ADC MC13XXX_USE_ADC -#define MC13783_USE_RTC MC13XXX_USE_RTC -#define MC13783_USE_REGULATOR MC13XXX_USE_REGULATOR -#define MC13783_USE_LED MC13XXX_USE_LED - -#define MC13783_ADC_MODE_TS MC13XXX_ADC_MODE_TS -#define MC13783_ADC_MODE_SINGLE_CHAN MC13XXX_ADC_MODE_SINGLE_CHAN -#define MC13783_ADC_MODE_MULT_CHAN MC13XXX_ADC_MODE_MULT_CHAN - -static inline int mc13783_adc_do_conversion(struct mc13783 *mc13783, - unsigned int mode, unsigned int channel, unsigned int *sample) -{ - return mc13xxx_adc_do_conversion(mc13783_to_mc13xxx(mc13783), mode, - channel, sample); -} - - #define MC13783_REG_SW1A 0 #define MC13783_REG_SW1B 1 #define MC13783_REG_SW2A 2 -- cgit v1.2.2 From 5da721c87aee3d94cfc48384073c2ec51a0b9a3b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 15 Sep 2011 18:54:53 +0200 Subject: mfd: Support software initiated shutdown of WM831x PMICs In systems where there is no hardware signal from the processor to the PMIC to initiate the final power off sequence we must initiate the shutdown with a register write to the PMIC. Support such systems in the driver. Since this may prevent a full shutdown of the system platform data is used to enable the feature. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/core.h | 3 +++ include/linux/mfd/wm831x/pdata.h | 3 +++ 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 8dda8ded5cda..fb3e84f92e90 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -374,6 +374,8 @@ struct wm831x { int irq_masks_cur[WM831X_NUM_IRQ_REGS]; /* Currently active value */ int irq_masks_cache[WM831X_NUM_IRQ_REGS]; /* Cached hardware value */ + bool soft_shutdown; + /* Chip revision based flags */ unsigned has_gpio_ena:1; /* Has GPIO enable bit */ unsigned has_cs_sts:1; /* Has current sink status bit */ @@ -412,6 +414,7 @@ int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq); void wm831x_device_exit(struct wm831x *wm831x); int wm831x_device_suspend(struct wm831x *wm831x); +void wm831x_device_shutdown(struct wm831x *wm831x); int wm831x_irq_init(struct wm831x *wm831x, int irq); void wm831x_irq_exit(struct wm831x *wm831x); void wm831x_auxadc_init(struct wm831x *wm831x); diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index 0ba24599fe51..1d7a3f7b3b5d 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -123,6 +123,9 @@ struct wm831x_pdata { /** Disable the touchscreen */ bool disable_touch; + /** The driver should initiate a power off sequence during shutdown */ + bool soft_shutdown; + int irq_base; int gpio_base; int gpio_defaults[WM831X_GPIO_NUM]; -- cgit v1.2.2 From 5ab9059d7f2055f434140046e74d3d811e4cbb15 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20R=C3=A9tornaz?= Date: Sun, 18 Sep 2011 17:57:35 +0200 Subject: mfd: Remove unused mc13xxx defines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Philippe Rétornaz Signed-off-by: Uwe Kleine-König Signed-off-by: Samuel Ortiz --- include/linux/mfd/mc13xxx.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index 6e7c0ac36d09..1acf9cbf5f25 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -145,8 +145,6 @@ struct mc13xxx_platform_data { #define MC13XXX_USE_CODEC (1 << 1) #define MC13XXX_USE_ADC (1 << 2) #define MC13XXX_USE_RTC (1 << 3) -#define MC13XXX_USE_REGULATOR (1 << 4) -#define MC13XXX_USE_LED (1 << 5) unsigned int flags; struct mc13xxx_regulator_platform_data regulators; -- cgit v1.2.2 From 30fc7ac3f62945a714d9842edae313a757efb49d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20R=C3=A9tornaz?= Date: Sun, 18 Sep 2011 18:10:53 +0200 Subject: input: Add power button support for mc13783 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds support for the power-on buttons of MC13783 PMIC. Signed-off-by: Philippe Rétornaz Acked-by: Dmitry Torokhov Signed-off-by: Uwe Kleine-König Signed-off-by: Samuel Ortiz --- include/linux/mfd/mc13xxx.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index 1acf9cbf5f25..3816c2fac0ad 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -140,6 +140,22 @@ struct mc13xxx_leds_platform_data { char tc3_period; }; +struct mc13xxx_buttons_platform_data { +#define MC13783_BUTTON_DBNC_0MS 0 +#define MC13783_BUTTON_DBNC_30MS 1 +#define MC13783_BUTTON_DBNC_150MS 2 +#define MC13783_BUTTON_DBNC_750MS 3 +#define MC13783_BUTTON_ENABLE (1 << 2) +#define MC13783_BUTTON_POL_INVERT (1 << 3) +#define MC13783_BUTTON_RESET_EN (1 << 4) + int b1on_flags; + unsigned short b1on_key; + int b2on_flags; + unsigned short b2on_key; + int b3on_flags; + unsigned short b3on_key; +}; + struct mc13xxx_platform_data { #define MC13XXX_USE_TOUCHSCREEN (1 << 0) #define MC13XXX_USE_CODEC (1 << 1) @@ -149,6 +165,7 @@ struct mc13xxx_platform_data { struct mc13xxx_regulator_platform_data regulators; struct mc13xxx_leds_platform_data *leds; + struct mc13xxx_buttons_platform_data *buttons; }; #define MC13XXX_ADC_MODE_TS 1 -- cgit v1.2.2 From 7583a213ec3bde3082547ee37ad96214513bc1cb Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 16 Sep 2011 13:21:47 +0100 Subject: mfd: Simulate active high IRQs with wm831x In order to ease system integration provide a simulation of active high IRQs on the GPIOs by polling the GPIO status when an IRQ is generated. This isn't ideal on several fronts and will miss initially active IRQs in the current implementation but it should work well for most cases. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index fb3e84f92e90..272f7fb5f8b8 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -385,6 +385,7 @@ struct wm831x { /* Used by the interrupt controller code to post writes */ int gpio_update[WM831X_NUM_GPIO_REGS]; + bool gpio_level[WM831X_NUM_GPIO_REGS]; struct mutex auxadc_lock; struct list_head auxadc_pending; -- cgit v1.2.2 From 1f5a371c075a7101fe75a75cde5aad928460a42e Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 21 Sep 2011 13:03:07 +0200 Subject: mfd: Add Intel MSIC driver Add support for Intel MSIC chip found on Intel Medfield platforms. This chip embeds several subdevices: audio, ADC, GPIO, power button, etc. The driver creates platform device for each subdevice. We also provide an MSIC register access API which should replace the more generic SCU IPC interface currently used. Existing drivers can choose whether they convert to this new API or stick with the SCU IPC interface. Signed-off-by: Mika Westerberg Signed-off-by: Samuel Ortiz --- include/linux/mfd/intel_msic.h | 456 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 456 insertions(+) create mode 100644 include/linux/mfd/intel_msic.h (limited to 'include/linux') diff --git a/include/linux/mfd/intel_msic.h b/include/linux/mfd/intel_msic.h new file mode 100644 index 000000000000..439a7a617bc9 --- /dev/null +++ b/include/linux/mfd/intel_msic.h @@ -0,0 +1,456 @@ +/* + * include/linux/mfd/intel_msic.h - Core interface for Intel MSIC + * + * Copyright (C) 2011, Intel Corporation + * Author: Mika Westerberg + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_MFD_INTEL_MSIC_H__ +#define __LINUX_MFD_INTEL_MSIC_H__ + +/* ID */ +#define INTEL_MSIC_ID0 0x000 /* RO */ +#define INTEL_MSIC_ID1 0x001 /* RO */ + +/* IRQ */ +#define INTEL_MSIC_IRQLVL1 0x002 +#define INTEL_MSIC_ADC1INT 0x003 +#define INTEL_MSIC_CCINT 0x004 +#define INTEL_MSIC_PWRSRCINT 0x005 +#define INTEL_MSIC_PWRSRCINT1 0x006 +#define INTEL_MSIC_CHRINT 0x007 +#define INTEL_MSIC_CHRINT1 0x008 +#define INTEL_MSIC_RTCIRQ 0x009 +#define INTEL_MSIC_GPIO0LVIRQ 0x00a +#define INTEL_MSIC_GPIO1LVIRQ 0x00b +#define INTEL_MSIC_GPIOHVIRQ 0x00c +#define INTEL_MSIC_VRINT 0x00d +#define INTEL_MSIC_OCAUDIO 0x00e +#define INTEL_MSIC_ACCDET 0x00f +#define INTEL_MSIC_RESETIRQ1 0x010 +#define INTEL_MSIC_RESETIRQ2 0x011 +#define INTEL_MSIC_MADC1INT 0x012 +#define INTEL_MSIC_MCCINT 0x013 +#define INTEL_MSIC_MPWRSRCINT 0x014 +#define INTEL_MSIC_MPWRSRCINT1 0x015 +#define INTEL_MSIC_MCHRINT 0x016 +#define INTEL_MSIC_MCHRINT1 0x017 +#define INTEL_MSIC_RTCIRQMASK 0x018 +#define INTEL_MSIC_GPIO0LVIRQMASK 0x019 +#define INTEL_MSIC_GPIO1LVIRQMASK 0x01a +#define INTEL_MSIC_GPIOHVIRQMASK 0x01b +#define INTEL_MSIC_VRINTMASK 0x01c +#define INTEL_MSIC_OCAUDIOMASK 0x01d +#define INTEL_MSIC_ACCDETMASK 0x01e +#define INTEL_MSIC_RESETIRQ1MASK 0x01f +#define INTEL_MSIC_RESETIRQ2MASK 0x020 +#define INTEL_MSIC_IRQLVL1MSK 0x021 +#define INTEL_MSIC_PBCONFIG 0x03e +#define INTEL_MSIC_PBSTATUS 0x03f /* RO */ + +/* GPIO */ +#define INTEL_MSIC_GPIO0LV7CTLO 0x040 +#define INTEL_MSIC_GPIO0LV6CTLO 0x041 +#define INTEL_MSIC_GPIO0LV5CTLO 0x042 +#define INTEL_MSIC_GPIO0LV4CTLO 0x043 +#define INTEL_MSIC_GPIO0LV3CTLO 0x044 +#define INTEL_MSIC_GPIO0LV2CTLO 0x045 +#define INTEL_MSIC_GPIO0LV1CTLO 0x046 +#define INTEL_MSIC_GPIO0LV0CTLO 0x047 +#define INTEL_MSIC_GPIO1LV7CTLOS 0x048 +#define INTEL_MSIC_GPIO1LV6CTLO 0x049 +#define INTEL_MSIC_GPIO1LV5CTLO 0x04a +#define INTEL_MSIC_GPIO1LV4CTLO 0x04b +#define INTEL_MSIC_GPIO1LV3CTLO 0x04c +#define INTEL_MSIC_GPIO1LV2CTLO 0x04d +#define INTEL_MSIC_GPIO1LV1CTLO 0x04e +#define INTEL_MSIC_GPIO1LV0CTLO 0x04f +#define INTEL_MSIC_GPIO0LV7CTLI 0x050 +#define INTEL_MSIC_GPIO0LV6CTLI 0x051 +#define INTEL_MSIC_GPIO0LV5CTLI 0x052 +#define INTEL_MSIC_GPIO0LV4CTLI 0x053 +#define INTEL_MSIC_GPIO0LV3CTLI 0x054 +#define INTEL_MSIC_GPIO0LV2CTLI 0x055 +#define INTEL_MSIC_GPIO0LV1CTLI 0x056 +#define INTEL_MSIC_GPIO0LV0CTLI 0x057 +#define INTEL_MSIC_GPIO1LV7CTLIS 0x058 +#define INTEL_MSIC_GPIO1LV6CTLI 0x059 +#define INTEL_MSIC_GPIO1LV5CTLI 0x05a +#define INTEL_MSIC_GPIO1LV4CTLI 0x05b +#define INTEL_MSIC_GPIO1LV3CTLI 0x05c +#define INTEL_MSIC_GPIO1LV2CTLI 0x05d +#define INTEL_MSIC_GPIO1LV1CTLI 0x05e +#define INTEL_MSIC_GPIO1LV0CTLI 0x05f +#define INTEL_MSIC_PWM0CLKDIV1 0x061 +#define INTEL_MSIC_PWM0CLKDIV0 0x062 +#define INTEL_MSIC_PWM1CLKDIV1 0x063 +#define INTEL_MSIC_PWM1CLKDIV0 0x064 +#define INTEL_MSIC_PWM2CLKDIV1 0x065 +#define INTEL_MSIC_PWM2CLKDIV0 0x066 +#define INTEL_MSIC_PWM0DUTYCYCLE 0x067 +#define INTEL_MSIC_PWM1DUTYCYCLE 0x068 +#define INTEL_MSIC_PWM2DUTYCYCLE 0x069 +#define INTEL_MSIC_GPIO0HV3CTLO 0x06d +#define INTEL_MSIC_GPIO0HV2CTLO 0x06e +#define INTEL_MSIC_GPIO0HV1CTLO 0x06f +#define INTEL_MSIC_GPIO0HV0CTLO 0x070 +#define INTEL_MSIC_GPIO1HV3CTLO 0x071 +#define INTEL_MSIC_GPIO1HV2CTLO 0x072 +#define INTEL_MSIC_GPIO1HV1CTLO 0x073 +#define INTEL_MSIC_GPIO1HV0CTLO 0x074 +#define INTEL_MSIC_GPIO0HV3CTLI 0x075 +#define INTEL_MSIC_GPIO0HV2CTLI 0x076 +#define INTEL_MSIC_GPIO0HV1CTLI 0x077 +#define INTEL_MSIC_GPIO0HV0CTLI 0x078 +#define INTEL_MSIC_GPIO1HV3CTLI 0x079 +#define INTEL_MSIC_GPIO1HV2CTLI 0x07a +#define INTEL_MSIC_GPIO1HV1CTLI 0x07b +#define INTEL_MSIC_GPIO1HV0CTLI 0x07c + +/* SVID */ +#define INTEL_MSIC_SVIDCTRL0 0x080 +#define INTEL_MSIC_SVIDCTRL1 0x081 +#define INTEL_MSIC_SVIDCTRL2 0x082 +#define INTEL_MSIC_SVIDTXLASTPKT3 0x083 /* RO */ +#define INTEL_MSIC_SVIDTXLASTPKT2 0x084 /* RO */ +#define INTEL_MSIC_SVIDTXLASTPKT1 0x085 /* RO */ +#define INTEL_MSIC_SVIDTXLASTPKT0 0x086 /* RO */ +#define INTEL_MSIC_SVIDPKTOUTBYTE3 0x087 +#define INTEL_MSIC_SVIDPKTOUTBYTE2 0x088 +#define INTEL_MSIC_SVIDPKTOUTBYTE1 0x089 +#define INTEL_MSIC_SVIDPKTOUTBYTE0 0x08a +#define INTEL_MSIC_SVIDRXVPDEBUG1 0x08b +#define INTEL_MSIC_SVIDRXVPDEBUG0 0x08c +#define INTEL_MSIC_SVIDRXLASTPKT3 0x08d /* RO */ +#define INTEL_MSIC_SVIDRXLASTPKT2 0x08e /* RO */ +#define INTEL_MSIC_SVIDRXLASTPKT1 0x08f /* RO */ +#define INTEL_MSIC_SVIDRXLASTPKT0 0x090 /* RO */ +#define INTEL_MSIC_SVIDRXCHKSTATUS3 0x091 /* RO */ +#define INTEL_MSIC_SVIDRXCHKSTATUS2 0x092 /* RO */ +#define INTEL_MSIC_SVIDRXCHKSTATUS1 0x093 /* RO */ +#define INTEL_MSIC_SVIDRXCHKSTATUS0 0x094 /* RO */ + +/* VREG */ +#define INTEL_MSIC_VCCLATCH 0x0c0 +#define INTEL_MSIC_VNNLATCH 0x0c1 +#define INTEL_MSIC_VCCCNT 0x0c2 +#define INTEL_MSIC_SMPSRAMP 0x0c3 +#define INTEL_MSIC_VNNCNT 0x0c4 +#define INTEL_MSIC_VNNAONCNT 0x0c5 +#define INTEL_MSIC_VCC122AONCNT 0x0c6 +#define INTEL_MSIC_V180AONCNT 0x0c7 +#define INTEL_MSIC_V500CNT 0x0c8 +#define INTEL_MSIC_VIHFCNT 0x0c9 +#define INTEL_MSIC_LDORAMP1 0x0ca +#define INTEL_MSIC_LDORAMP2 0x0cb +#define INTEL_MSIC_VCC108AONCNT 0x0cc +#define INTEL_MSIC_VCC108ASCNT 0x0cd +#define INTEL_MSIC_VCC108CNT 0x0ce +#define INTEL_MSIC_VCCA100ASCNT 0x0cf +#define INTEL_MSIC_VCCA100CNT 0x0d0 +#define INTEL_MSIC_VCC180AONCNT 0x0d1 +#define INTEL_MSIC_VCC180CNT 0x0d2 +#define INTEL_MSIC_VCC330CNT 0x0d3 +#define INTEL_MSIC_VUSB330CNT 0x0d4 +#define INTEL_MSIC_VCCSDIOCNT 0x0d5 +#define INTEL_MSIC_VPROG1CNT 0x0d6 +#define INTEL_MSIC_VPROG2CNT 0x0d7 +#define INTEL_MSIC_VEMMCSCNT 0x0d8 +#define INTEL_MSIC_VEMMC1CNT 0x0d9 +#define INTEL_MSIC_VEMMC2CNT 0x0da +#define INTEL_MSIC_VAUDACNT 0x0db +#define INTEL_MSIC_VHSPCNT 0x0dc +#define INTEL_MSIC_VHSNCNT 0x0dd +#define INTEL_MSIC_VHDMICNT 0x0de +#define INTEL_MSIC_VOTGCNT 0x0df +#define INTEL_MSIC_V1P35CNT 0x0e0 +#define INTEL_MSIC_V330AONCNT 0x0e1 + +/* RESET */ +#define INTEL_MSIC_CHIPCNTRL 0x100 /* WO */ +#define INTEL_MSIC_ERCONFIG 0x101 + +/* BURST */ +#define INTEL_MSIC_BATCURRENTLIMIT12 0x102 +#define INTEL_MSIC_BATTIMELIMIT12 0x103 +#define INTEL_MSIC_BATTIMELIMIT3 0x104 +#define INTEL_MSIC_BATTIMEDB 0x105 +#define INTEL_MSIC_BRSTCONFIGOUTPUTS 0x106 +#define INTEL_MSIC_BRSTCONFIGACTIONS 0x107 +#define INTEL_MSIC_BURSTCONTROLSTATUS 0x108 + +/* RTC */ +#define INTEL_MSIC_RTCB1 0x140 /* RO */ +#define INTEL_MSIC_RTCB2 0x141 /* RO */ +#define INTEL_MSIC_RTCB3 0x142 /* RO */ +#define INTEL_MSIC_RTCB4 0x143 /* RO */ +#define INTEL_MSIC_RTCOB1 0x144 +#define INTEL_MSIC_RTCOB2 0x145 +#define INTEL_MSIC_RTCOB3 0x146 +#define INTEL_MSIC_RTCOB4 0x147 +#define INTEL_MSIC_RTCAB1 0x148 +#define INTEL_MSIC_RTCAB2 0x149 +#define INTEL_MSIC_RTCAB3 0x14a +#define INTEL_MSIC_RTCAB4 0x14b +#define INTEL_MSIC_RTCWAB1 0x14c +#define INTEL_MSIC_RTCWAB2 0x14d +#define INTEL_MSIC_RTCWAB3 0x14e +#define INTEL_MSIC_RTCWAB4 0x14f +#define INTEL_MSIC_RTCSC1 0x150 +#define INTEL_MSIC_RTCSC2 0x151 +#define INTEL_MSIC_RTCSC3 0x152 +#define INTEL_MSIC_RTCSC4 0x153 +#define INTEL_MSIC_RTCSTATUS 0x154 /* RO */ +#define INTEL_MSIC_RTCCONFIG1 0x155 +#define INTEL_MSIC_RTCCONFIG2 0x156 + +/* CHARGER */ +#define INTEL_MSIC_BDTIMER 0x180 +#define INTEL_MSIC_BATTRMV 0x181 +#define INTEL_MSIC_VBUSDET 0x182 +#define INTEL_MSIC_VBUSDET1 0x183 +#define INTEL_MSIC_ADPHVDET 0x184 +#define INTEL_MSIC_ADPLVDET 0x185 +#define INTEL_MSIC_ADPDETDBDM 0x186 +#define INTEL_MSIC_LOWBATTDET 0x187 +#define INTEL_MSIC_CHRCTRL 0x188 +#define INTEL_MSIC_CHRCVOLTAGE 0x189 +#define INTEL_MSIC_CHRCCURRENT 0x18a +#define INTEL_MSIC_SPCHARGER 0x18b +#define INTEL_MSIC_CHRTTIME 0x18c +#define INTEL_MSIC_CHRCTRL1 0x18d +#define INTEL_MSIC_PWRSRCLMT 0x18e +#define INTEL_MSIC_CHRSTWDT 0x18f +#define INTEL_MSIC_WDTWRITE 0x190 /* WO */ +#define INTEL_MSIC_CHRSAFELMT 0x191 +#define INTEL_MSIC_SPWRSRCINT 0x192 /* RO */ +#define INTEL_MSIC_SPWRSRCINT1 0x193 /* RO */ +#define INTEL_MSIC_CHRLEDPWM 0x194 +#define INTEL_MSIC_CHRLEDCTRL 0x195 + +/* ADC */ +#define INTEL_MSIC_ADC1CNTL1 0x1c0 +#define INTEL_MSIC_ADC1CNTL2 0x1c1 +#define INTEL_MSIC_ADC1CNTL3 0x1c2 +#define INTEL_MSIC_ADC1OFFSETH 0x1c3 /* RO */ +#define INTEL_MSIC_ADC1OFFSETL 0x1c4 /* RO */ +#define INTEL_MSIC_ADC1ADDR0 0x1c5 +#define INTEL_MSIC_ADC1ADDR1 0x1c6 +#define INTEL_MSIC_ADC1ADDR2 0x1c7 +#define INTEL_MSIC_ADC1ADDR3 0x1c8 +#define INTEL_MSIC_ADC1ADDR4 0x1c9 +#define INTEL_MSIC_ADC1ADDR5 0x1ca +#define INTEL_MSIC_ADC1ADDR6 0x1cb +#define INTEL_MSIC_ADC1ADDR7 0x1cc +#define INTEL_MSIC_ADC1ADDR8 0x1cd +#define INTEL_MSIC_ADC1ADDR9 0x1ce +#define INTEL_MSIC_ADC1ADDR10 0x1cf +#define INTEL_MSIC_ADC1ADDR11 0x1d0 +#define INTEL_MSIC_ADC1ADDR12 0x1d1 +#define INTEL_MSIC_ADC1ADDR13 0x1d2 +#define INTEL_MSIC_ADC1ADDR14 0x1d3 +#define INTEL_MSIC_ADC1SNS0H 0x1d4 /* RO */ +#define INTEL_MSIC_ADC1SNS0L 0x1d5 /* RO */ +#define INTEL_MSIC_ADC1SNS1H 0x1d6 /* RO */ +#define INTEL_MSIC_ADC1SNS1L 0x1d7 /* RO */ +#define INTEL_MSIC_ADC1SNS2H 0x1d8 /* RO */ +#define INTEL_MSIC_ADC1SNS2L 0x1d9 /* RO */ +#define INTEL_MSIC_ADC1SNS3H 0x1da /* RO */ +#define INTEL_MSIC_ADC1SNS3L 0x1db /* RO */ +#define INTEL_MSIC_ADC1SNS4H 0x1dc /* RO */ +#define INTEL_MSIC_ADC1SNS4L 0x1dd /* RO */ +#define INTEL_MSIC_ADC1SNS5H 0x1de /* RO */ +#define INTEL_MSIC_ADC1SNS5L 0x1df /* RO */ +#define INTEL_MSIC_ADC1SNS6H 0x1e0 /* RO */ +#define INTEL_MSIC_ADC1SNS6L 0x1e1 /* RO */ +#define INTEL_MSIC_ADC1SNS7H 0x1e2 /* RO */ +#define INTEL_MSIC_ADC1SNS7L 0x1e3 /* RO */ +#define INTEL_MSIC_ADC1SNS8H 0x1e4 /* RO */ +#define INTEL_MSIC_ADC1SNS8L 0x1e5 /* RO */ +#define INTEL_MSIC_ADC1SNS9H 0x1e6 /* RO */ +#define INTEL_MSIC_ADC1SNS9L 0x1e7 /* RO */ +#define INTEL_MSIC_ADC1SNS10H 0x1e8 /* RO */ +#define INTEL_MSIC_ADC1SNS10L 0x1e9 /* RO */ +#define INTEL_MSIC_ADC1SNS11H 0x1ea /* RO */ +#define INTEL_MSIC_ADC1SNS11L 0x1eb /* RO */ +#define INTEL_MSIC_ADC1SNS12H 0x1ec /* RO */ +#define INTEL_MSIC_ADC1SNS12L 0x1ed /* RO */ +#define INTEL_MSIC_ADC1SNS13H 0x1ee /* RO */ +#define INTEL_MSIC_ADC1SNS13L 0x1ef /* RO */ +#define INTEL_MSIC_ADC1SNS14H 0x1f0 /* RO */ +#define INTEL_MSIC_ADC1SNS14L 0x1f1 /* RO */ +#define INTEL_MSIC_ADC1BV0H 0x1f2 /* RO */ +#define INTEL_MSIC_ADC1BV0L 0x1f3 /* RO */ +#define INTEL_MSIC_ADC1BV1H 0x1f4 /* RO */ +#define INTEL_MSIC_ADC1BV1L 0x1f5 /* RO */ +#define INTEL_MSIC_ADC1BV2H 0x1f6 /* RO */ +#define INTEL_MSIC_ADC1BV2L 0x1f7 /* RO */ +#define INTEL_MSIC_ADC1BV3H 0x1f8 /* RO */ +#define INTEL_MSIC_ADC1BV3L 0x1f9 /* RO */ +#define INTEL_MSIC_ADC1BI0H 0x1fa /* RO */ +#define INTEL_MSIC_ADC1BI0L 0x1fb /* RO */ +#define INTEL_MSIC_ADC1BI1H 0x1fc /* RO */ +#define INTEL_MSIC_ADC1BI1L 0x1fd /* RO */ +#define INTEL_MSIC_ADC1BI2H 0x1fe /* RO */ +#define INTEL_MSIC_ADC1BI2L 0x1ff /* RO */ +#define INTEL_MSIC_ADC1BI3H 0x200 /* RO */ +#define INTEL_MSIC_ADC1BI3L 0x201 /* RO */ +#define INTEL_MSIC_CCCNTL 0x202 +#define INTEL_MSIC_CCOFFSETH 0x203 /* RO */ +#define INTEL_MSIC_CCOFFSETL 0x204 /* RO */ +#define INTEL_MSIC_CCADCHA 0x205 /* RO */ +#define INTEL_MSIC_CCADCLA 0x206 /* RO */ + +/* AUDIO */ +#define INTEL_MSIC_AUDPLLCTRL 0x240 +#define INTEL_MSIC_DMICBUF0123 0x241 +#define INTEL_MSIC_DMICBUF45 0x242 +#define INTEL_MSIC_DMICGPO 0x244 +#define INTEL_MSIC_DMICMUX 0x245 +#define INTEL_MSIC_DMICCLK 0x246 +#define INTEL_MSIC_MICBIAS 0x247 +#define INTEL_MSIC_ADCCONFIG 0x248 +#define INTEL_MSIC_MICAMP1 0x249 +#define INTEL_MSIC_MICAMP2 0x24a +#define INTEL_MSIC_NOISEMUX 0x24b +#define INTEL_MSIC_AUDIOMUX12 0x24c +#define INTEL_MSIC_AUDIOMUX34 0x24d +#define INTEL_MSIC_AUDIOSINC 0x24e +#define INTEL_MSIC_AUDIOTXEN 0x24f +#define INTEL_MSIC_HSEPRXCTRL 0x250 +#define INTEL_MSIC_IHFRXCTRL 0x251 +#define INTEL_MSIC_VOICETXVOL 0x252 +#define INTEL_MSIC_SIDETONEVOL 0x253 +#define INTEL_MSIC_MUSICSHARVOL 0x254 +#define INTEL_MSIC_VOICETXCTRL 0x255 +#define INTEL_MSIC_HSMIXER 0x256 +#define INTEL_MSIC_DACCONFIG 0x257 +#define INTEL_MSIC_SOFTMUTE 0x258 +#define INTEL_MSIC_HSLVOLCTRL 0x259 +#define INTEL_MSIC_HSRVOLCTRL 0x25a +#define INTEL_MSIC_IHFLVOLCTRL 0x25b +#define INTEL_MSIC_IHFRVOLCTRL 0x25c +#define INTEL_MSIC_DRIVEREN 0x25d +#define INTEL_MSIC_LINEOUTCTRL 0x25e +#define INTEL_MSIC_VIB1CTRL1 0x25f +#define INTEL_MSIC_VIB1CTRL2 0x260 +#define INTEL_MSIC_VIB1CTRL3 0x261 +#define INTEL_MSIC_VIB1SPIPCM_1 0x262 +#define INTEL_MSIC_VIB1SPIPCM_2 0x263 +#define INTEL_MSIC_VIB1CTRL5 0x264 +#define INTEL_MSIC_VIB2CTRL1 0x265 +#define INTEL_MSIC_VIB2CTRL2 0x266 +#define INTEL_MSIC_VIB2CTRL3 0x267 +#define INTEL_MSIC_VIB2SPIPCM_1 0x268 +#define INTEL_MSIC_VIB2SPIPCM_2 0x269 +#define INTEL_MSIC_VIB2CTRL5 0x26a +#define INTEL_MSIC_BTNCTRL1 0x26b +#define INTEL_MSIC_BTNCTRL2 0x26c +#define INTEL_MSIC_PCM1TXSLOT01 0x26d +#define INTEL_MSIC_PCM1TXSLOT23 0x26e +#define INTEL_MSIC_PCM1TXSLOT45 0x26f +#define INTEL_MSIC_PCM1RXSLOT0123 0x270 +#define INTEL_MSIC_PCM1RXSLOT045 0x271 +#define INTEL_MSIC_PCM2TXSLOT01 0x272 +#define INTEL_MSIC_PCM2TXSLOT23 0x273 +#define INTEL_MSIC_PCM2TXSLOT45 0x274 +#define INTEL_MSIC_PCM2RXSLOT01 0x275 +#define INTEL_MSIC_PCM2RXSLOT23 0x276 +#define INTEL_MSIC_PCM2RXSLOT45 0x277 +#define INTEL_MSIC_PCM1CTRL1 0x278 +#define INTEL_MSIC_PCM1CTRL2 0x279 +#define INTEL_MSIC_PCM1CTRL3 0x27a +#define INTEL_MSIC_PCM2CTRL1 0x27b +#define INTEL_MSIC_PCM2CTRL2 0x27c + +/* HDMI */ +#define INTEL_MSIC_HDMIPUEN 0x280 +#define INTEL_MSIC_HDMISTATUS 0x281 /* RO */ + +/* Physical address of the start of the MSIC interrupt tree in SRAM */ +#define INTEL_MSIC_IRQ_PHYS_BASE 0xffff7fc0 + +/** + * struct intel_msic_gpio_pdata - platform data for the MSIC GPIO driver + * @gpio_base: base number for the GPIOs + */ +struct intel_msic_gpio_pdata { + unsigned gpio_base; +}; + +/** + * struct intel_msic_ocd_pdata - platform data for the MSIC OCD driver + * @gpio: GPIO number used for OCD interrupts + * + * The MSIC MFD driver converts @gpio into an IRQ number and passes it to + * the OCD driver as %IORESOURCE_IRQ. + */ +struct intel_msic_ocd_pdata { + unsigned gpio; +}; + +/* MSIC embedded blocks (subdevices) */ +enum intel_msic_block { + INTEL_MSIC_BLOCK_TOUCH, + INTEL_MSIC_BLOCK_ADC, + INTEL_MSIC_BLOCK_BATTERY, + INTEL_MSIC_BLOCK_GPIO, + INTEL_MSIC_BLOCK_AUDIO, + INTEL_MSIC_BLOCK_HDMI, + INTEL_MSIC_BLOCK_THERMAL, + INTEL_MSIC_BLOCK_POWER_BTN, + INTEL_MSIC_BLOCK_OCD, + + INTEL_MSIC_BLOCK_LAST, +}; + +/** + * struct intel_msic_platform_data - platform data for the MSIC driver + * @irq: array of interrupt numbers, one per device. If @irq is set to %0 + * for a given block, the corresponding platform device is not + * created. For devices which don't have an interrupt, use %0xff + * (this is same as in SFI spec). + * @gpio: platform data for the MSIC GPIO driver + * @ocd: platform data for the MSIC OCD driver + * + * Once the MSIC driver is initialized, the register interface is ready to + * use. All the platform devices for subdevices are created after the + * register interface is ready so that we can guarantee its availability to + * the subdevice drivers. + * + * Interrupt numbers are passed to the subdevices via %IORESOURCE_IRQ + * resources of the created platform device. + */ +struct intel_msic_platform_data { + int irq[INTEL_MSIC_BLOCK_LAST]; + struct intel_msic_gpio_pdata *gpio; + struct intel_msic_ocd_pdata *ocd; +}; + +struct intel_msic; + +extern int intel_msic_reg_read(unsigned short reg, u8 *val); +extern int intel_msic_reg_write(unsigned short reg, u8 val); +extern int intel_msic_reg_update(unsigned short reg, u8 val, u8 mask); +extern int intel_msic_bulk_read(unsigned short *reg, u8 *buf, size_t count); +extern int intel_msic_bulk_write(unsigned short *reg, u8 *buf, size_t count); + +/* + * pdev_to_intel_msic - gets an MSIC instance from the platform device + * @pdev: platform device pointer + * + * The client drivers need to have pointer to the MSIC instance if they + * want to call intel_msic_irq_read(). This macro can be used for + * convenience to get the MSIC pointer from @pdev where needed. This is + * _only_ valid for devices which are managed by the MSIC. + */ +#define pdev_to_intel_msic(pdev) (dev_get_drvdata(pdev->dev.parent)) + +extern int intel_msic_irq_read(struct intel_msic *msic, unsigned short reg, + u8 *val); + +#endif /* __LINUX_MFD_INTEL_MSIC_H__ */ -- cgit v1.2.2 From 3d5e2cabf11a65685e5067382ba4c4a76f18fcb7 Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Thu, 22 Sep 2011 08:22:18 +0200 Subject: mfd: ab5500 chip register access The analog baseband chip ab5500 is a multi functional chip containing regulators, charging, gpio, USB and accessory detect. It also contain various multimedia functionalities like digital encoder and audio codec. The core driver added with this patch provides register access via i2c via PRCMU. Event handling implemented as irq_chip will come in future patches since it depends on PRCMU functionality not yet implemented. Signed-off-by: Mattias Wallin Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab5500/ab5500.h | 140 ++++++++++++++++++++++++++++++++++++++ include/linux/mfd/abx500.h | 4 +- 2 files changed, 142 insertions(+), 2 deletions(-) create mode 100644 include/linux/mfd/ab5500/ab5500.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab5500/ab5500.h b/include/linux/mfd/ab5500/ab5500.h new file mode 100644 index 000000000000..a720051ae933 --- /dev/null +++ b/include/linux/mfd/ab5500/ab5500.h @@ -0,0 +1,140 @@ +/* + * Copyright (C) ST-Ericsson 2011 + * + * License Terms: GNU General Public License v2 + */ +#ifndef MFD_AB5500_H +#define MFD_AB5500_H + +#include + +enum ab5500_devid { + AB5500_DEVID_ADC, + AB5500_DEVID_LEDS, + AB5500_DEVID_POWER, + AB5500_DEVID_REGULATORS, + AB5500_DEVID_SIM, + AB5500_DEVID_RTC, + AB5500_DEVID_CHARGER, + AB5500_DEVID_FUELGAUGE, + AB5500_DEVID_VIBRATOR, + AB5500_DEVID_CODEC, + AB5500_DEVID_USB, + AB5500_DEVID_OTP, + AB5500_DEVID_VIDEO, + AB5500_DEVID_DBIECI, + AB5500_DEVID_ONSWA, + AB5500_NUM_DEVICES, +}; + +enum ab5500_banks { + AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP = 0, + AB5500_BANK_VDDDIG_IO_I2C_CLK_TST = 1, + AB5500_BANK_VDENC = 2, + AB5500_BANK_SIM_USBSIM = 3, + AB5500_BANK_LED = 4, + AB5500_BANK_ADC = 5, + AB5500_BANK_RTC = 6, + AB5500_BANK_STARTUP = 7, + AB5500_BANK_DBI_ECI = 8, + AB5500_BANK_CHG = 9, + AB5500_BANK_FG_BATTCOM_ACC = 10, + AB5500_BANK_USB = 11, + AB5500_BANK_IT = 12, + AB5500_BANK_VIBRA = 13, + AB5500_BANK_AUDIO_HEADSETUSB = 14, + AB5500_NUM_BANKS = 15, +}; + +enum ab5500_banks_addr { + AB5500_ADDR_VIT_IO_I2C_CLK_TST_OTP = 0x4A, + AB5500_ADDR_VDDDIG_IO_I2C_CLK_TST = 0x4B, + AB5500_ADDR_VDENC = 0x06, + AB5500_ADDR_SIM_USBSIM = 0x04, + AB5500_ADDR_LED = 0x10, + AB5500_ADDR_ADC = 0x0A, + AB5500_ADDR_RTC = 0x0F, + AB5500_ADDR_STARTUP = 0x03, + AB5500_ADDR_DBI_ECI = 0x07, + AB5500_ADDR_CHG = 0x0B, + AB5500_ADDR_FG_BATTCOM_ACC = 0x0C, + AB5500_ADDR_USB = 0x05, + AB5500_ADDR_IT = 0x0E, + AB5500_ADDR_VIBRA = 0x02, + AB5500_ADDR_AUDIO_HEADSETUSB = 0x0D, +}; + +/* + * Interrupt register offsets + * Bank : 0x0E + */ +#define AB5500_IT_SOURCE0_REG 0x20 +#define AB5500_IT_SOURCE1_REG 0x21 +#define AB5500_IT_SOURCE2_REG 0x22 +#define AB5500_IT_SOURCE3_REG 0x23 +#define AB5500_IT_SOURCE4_REG 0x24 +#define AB5500_IT_SOURCE5_REG 0x25 +#define AB5500_IT_SOURCE6_REG 0x26 +#define AB5500_IT_SOURCE7_REG 0x27 +#define AB5500_IT_SOURCE8_REG 0x28 +#define AB5500_IT_SOURCE9_REG 0x29 +#define AB5500_IT_SOURCE10_REG 0x2A +#define AB5500_IT_SOURCE11_REG 0x2B +#define AB5500_IT_SOURCE12_REG 0x2C +#define AB5500_IT_SOURCE13_REG 0x2D +#define AB5500_IT_SOURCE14_REG 0x2E +#define AB5500_IT_SOURCE15_REG 0x2F +#define AB5500_IT_SOURCE16_REG 0x30 +#define AB5500_IT_SOURCE17_REG 0x31 +#define AB5500_IT_SOURCE18_REG 0x32 +#define AB5500_IT_SOURCE19_REG 0x33 +#define AB5500_IT_SOURCE20_REG 0x34 +#define AB5500_IT_SOURCE21_REG 0x35 +#define AB5500_IT_SOURCE22_REG 0x36 +#define AB5500_IT_SOURCE23_REG 0x37 + +#define AB5500_NUM_IRQ_REGS 23 + +/** + * struct ab5500 + * @access_mutex: lock out concurrent accesses to the AB registers + * @dev: a pointer to the device struct for this chip driver + * @ab5500_irq: the analog baseband irq + * @irq_base: the platform configuration irq base for subdevices + * @chip_name: name of this chip variant + * @chip_id: 8 bit chip ID for this chip variant + * @irq_lock: a lock to protect the mask + * @abb_events: a local bit mask of the prcmu wakeup events + * @event_mask: a local copy of the mask event registers + * @last_event_mask: a copy of the last event_mask written to hardware + * @startup_events: a copy of the first reading of the event registers + * @startup_events_read: whether the first events have been read + */ +struct ab5500 { + struct mutex access_mutex; + struct device *dev; + unsigned int ab5500_irq; + unsigned int irq_base; + char chip_name[32]; + u8 chip_id; + struct mutex irq_lock; + u32 abb_events; + u8 mask[AB5500_NUM_IRQ_REGS]; + u8 oldmask[AB5500_NUM_IRQ_REGS]; + u8 startup_events[AB5500_NUM_IRQ_REGS]; + bool startup_events_read; +#ifdef CONFIG_DEBUG_FS + unsigned int debug_bank; + unsigned int debug_address; +#endif +}; + +struct ab5500_platform_data { + struct {unsigned int base; unsigned int count; } irq; + void *dev_data[AB5500_NUM_DEVICES]; + struct abx500_init_settings *init_settings; + unsigned int init_settings_sz; + bool pm_power_off; +}; + +#endif /* MFD_AB5500_H */ diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 896b5e47f16e..79ec2c7b5fab 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -31,8 +31,8 @@ #define AB3100_R2B 0xc8 #define AB3550_P1A 0x10 #define AB5500_1_0 0x20 -#define AB5500_2_0 0x21 -#define AB5500_2_1 0x22 +#define AB5500_1_1 0x21 +#define AB5500_2_0 0x24 /* AB8500 CIDs*/ #define AB8500_CUTEARLY 0x00 -- cgit v1.2.2 From 8959e74399c798b45c0f5d477972b927c28f8dc9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 26 Sep 2011 11:45:30 +0200 Subject: mfd: Delete ab3550 driver The AB3550 never passed the prototype stage. Instead it was used as a precursor to AB5500 for testing basic building blocks used in that chip, since they had large similarities. Since AB3550 will not see the light of day in product form and since the prototypes are no longer used, let's delete the driver and any references to it. Cc: Mattias Wallin Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/abx500.h | 48 +--------------------------------------------- 1 file changed, 1 insertion(+), 47 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 79ec2c7b5fab..6d096e8b7746 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -6,7 +6,7 @@ * * ABX500 core access functions. * The abx500 interface is used for the Analog Baseband chip - * ab3100, ab3550, ab5500, and ab8500. + * ab3100, ab5500, and ab8500. * * Author: Mattias Wallin * Author: Mattias Nilsson @@ -29,7 +29,6 @@ #define AB3100_P1G 0xc6 #define AB3100_R2A 0xc7 #define AB3100_R2B 0xc8 -#define AB3550_P1A 0x10 #define AB5500_1_0 0x20 #define AB5500_1_1 0x21 #define AB5500_2_0 0x24 @@ -143,39 +142,6 @@ int ab3100_event_register(struct ab3100 *ab3100, int ab3100_event_unregister(struct ab3100 *ab3100, struct notifier_block *nb); -/* AB3550, STR register flags */ -#define AB3550_STR_ONSWA (0x01) -#define AB3550_STR_ONSWB (0x02) -#define AB3550_STR_ONSWC (0x04) -#define AB3550_STR_DCIO (0x08) -#define AB3550_STR_BOOT_MODE (0x10) -#define AB3550_STR_SIM_OFF (0x20) -#define AB3550_STR_BATT_REMOVAL (0x40) -#define AB3550_STR_VBUS (0x80) - -/* Interrupt mask registers */ -#define AB3550_IMR1 0x29 -#define AB3550_IMR2 0x2a -#define AB3550_IMR3 0x2b -#define AB3550_IMR4 0x2c -#define AB3550_IMR5 0x2d - -enum ab3550_devid { - AB3550_DEVID_ADC, - AB3550_DEVID_DAC, - AB3550_DEVID_LEDS, - AB3550_DEVID_POWER, - AB3550_DEVID_REGULATORS, - AB3550_DEVID_SIM, - AB3550_DEVID_UART, - AB3550_DEVID_RTC, - AB3550_DEVID_CHARGER, - AB3550_DEVID_FUELGAUGE, - AB3550_DEVID_VIBRATOR, - AB3550_DEVID_CODEC, - AB3550_NUM_DEVICES, -}; - /** * struct abx500_init_setting * Initial value of the registers for driver to use during setup. @@ -186,18 +152,6 @@ struct abx500_init_settings { u8 setting; }; -/** - * struct ab3550_platform_data - * Data supplied to initialize board connections to the AB3550 - */ -struct ab3550_platform_data { - struct {unsigned int base; unsigned int count; } irq; - void *dev_data[AB3550_NUM_DEVICES]; - size_t dev_data_sz[AB3550_NUM_DEVICES]; - struct abx500_init_settings *init_settings; - unsigned int init_settings_sz; -}; - int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, u8 value); int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg, -- cgit v1.2.2 From fea799e3d3ab84ac675de7e48a13a79fb76b6e63 Mon Sep 17 00:00:00 2001 From: Mattias Nilsson Date: Fri, 12 Aug 2011 10:28:02 +0200 Subject: mfd: Create a common interface for dbx500 PRCMU drivers This adds a header file that contains the set of functions and definitions that will be shared between the DB8500 and DB5500 PRCMU drivers. Signed-off-by: Mattias Nilsson Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/dbx500-prcmu.h | 549 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 549 insertions(+) create mode 100644 include/linux/mfd/dbx500-prcmu.h (limited to 'include/linux') diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h new file mode 100644 index 000000000000..6c7584d69d8f --- /dev/null +++ b/include/linux/mfd/dbx500-prcmu.h @@ -0,0 +1,549 @@ +/* + * Copyright (C) ST Ericsson SA 2011 + * + * License Terms: GNU General Public License v2 + * + * STE Ux500 PRCMU API + */ +#ifndef __MACH_PRCMU_H +#define __MACH_PRCMU_H + +#include +#include +#include + +/* PRCMU Wakeup defines */ +enum prcmu_wakeup_index { + PRCMU_WAKEUP_INDEX_RTC, + PRCMU_WAKEUP_INDEX_RTT0, + PRCMU_WAKEUP_INDEX_RTT1, + PRCMU_WAKEUP_INDEX_HSI0, + PRCMU_WAKEUP_INDEX_HSI1, + PRCMU_WAKEUP_INDEX_USB, + PRCMU_WAKEUP_INDEX_ABB, + PRCMU_WAKEUP_INDEX_ABB_FIFO, + PRCMU_WAKEUP_INDEX_ARM, + PRCMU_WAKEUP_INDEX_CD_IRQ, + NUM_PRCMU_WAKEUP_INDICES +}; +#define PRCMU_WAKEUP(_name) (BIT(PRCMU_WAKEUP_INDEX_##_name)) + +/* EPOD (power domain) IDs */ + +/* + * DB8500 EPODs + * - EPOD_ID_SVAMMDSP: power domain for SVA MMDSP + * - EPOD_ID_SVAPIPE: power domain for SVA pipe + * - EPOD_ID_SIAMMDSP: power domain for SIA MMDSP + * - EPOD_ID_SIAPIPE: power domain for SIA pipe + * - EPOD_ID_SGA: power domain for SGA + * - EPOD_ID_B2R2_MCDE: power domain for B2R2 and MCDE + * - EPOD_ID_ESRAM12: power domain for ESRAM 1 and 2 + * - EPOD_ID_ESRAM34: power domain for ESRAM 3 and 4 + * - NUM_EPOD_ID: number of power domains + * + * TODO: These should be prefixed. + */ +#define EPOD_ID_SVAMMDSP 0 +#define EPOD_ID_SVAPIPE 1 +#define EPOD_ID_SIAMMDSP 2 +#define EPOD_ID_SIAPIPE 3 +#define EPOD_ID_SGA 4 +#define EPOD_ID_B2R2_MCDE 5 +#define EPOD_ID_ESRAM12 6 +#define EPOD_ID_ESRAM34 7 +#define NUM_EPOD_ID 8 + +/* + * DB5500 EPODs + */ +#define DB5500_EPOD_ID_BASE 0x0100 +#define DB5500_EPOD_ID_SGA (DB5500_EPOD_ID_BASE + 0) +#define DB5500_EPOD_ID_HVA (DB5500_EPOD_ID_BASE + 1) +#define DB5500_EPOD_ID_SIA (DB5500_EPOD_ID_BASE + 2) +#define DB5500_EPOD_ID_DISP (DB5500_EPOD_ID_BASE + 3) +#define DB5500_EPOD_ID_ESRAM12 (DB5500_EPOD_ID_BASE + 6) +#define DB5500_NUM_EPOD_ID 7 + +/* + * state definition for EPOD (power domain) + * - EPOD_STATE_NO_CHANGE: The EPOD should remain unchanged + * - EPOD_STATE_OFF: The EPOD is switched off + * - EPOD_STATE_RAMRET: The EPOD is switched off with its internal RAM in + * retention + * - EPOD_STATE_ON_CLK_OFF: The EPOD is switched on, clock is still off + * - EPOD_STATE_ON: Same as above, but with clock enabled + */ +#define EPOD_STATE_NO_CHANGE 0x00 +#define EPOD_STATE_OFF 0x01 +#define EPOD_STATE_RAMRET 0x02 +#define EPOD_STATE_ON_CLK_OFF 0x03 +#define EPOD_STATE_ON 0x04 + +/* + * CLKOUT sources + */ +#define PRCMU_CLKSRC_CLK38M 0x00 +#define PRCMU_CLKSRC_ACLK 0x01 +#define PRCMU_CLKSRC_SYSCLK 0x02 +#define PRCMU_CLKSRC_LCDCLK 0x03 +#define PRCMU_CLKSRC_SDMMCCLK 0x04 +#define PRCMU_CLKSRC_TVCLK 0x05 +#define PRCMU_CLKSRC_TIMCLK 0x06 +#define PRCMU_CLKSRC_CLK009 0x07 +/* These are only valid for CLKOUT1: */ +#define PRCMU_CLKSRC_SIAMMDSPCLK 0x40 +#define PRCMU_CLKSRC_I2CCLK 0x41 +#define PRCMU_CLKSRC_MSP02CLK 0x42 +#define PRCMU_CLKSRC_ARMPLL_OBSCLK 0x43 +#define PRCMU_CLKSRC_HSIRXCLK 0x44 +#define PRCMU_CLKSRC_HSITXCLK 0x45 +#define PRCMU_CLKSRC_ARMCLKFIX 0x46 +#define PRCMU_CLKSRC_HDMICLK 0x47 + +/* + * Clock identifiers. + */ +enum prcmu_clock { + PRCMU_SGACLK, + PRCMU_UARTCLK, + PRCMU_MSP02CLK, + PRCMU_MSP1CLK, + PRCMU_I2CCLK, + PRCMU_SDMMCCLK, + PRCMU_SLIMCLK, + PRCMU_PER1CLK, + PRCMU_PER2CLK, + PRCMU_PER3CLK, + PRCMU_PER5CLK, + PRCMU_PER6CLK, + PRCMU_PER7CLK, + PRCMU_LCDCLK, + PRCMU_BMLCLK, + PRCMU_HSITXCLK, + PRCMU_HSIRXCLK, + PRCMU_HDMICLK, + PRCMU_APEATCLK, + PRCMU_APETRACECLK, + PRCMU_MCDECLK, + PRCMU_IPI2CCLK, + PRCMU_DSIALTCLK, + PRCMU_DMACLK, + PRCMU_B2R2CLK, + PRCMU_TVCLK, + PRCMU_SSPCLK, + PRCMU_RNGCLK, + PRCMU_UICCCLK, + PRCMU_PWMCLK, + PRCMU_IRDACLK, + PRCMU_IRRCCLK, + PRCMU_SIACLK, + PRCMU_SVACLK, + PRCMU_NUM_REG_CLOCKS, + PRCMU_SYSCLK = PRCMU_NUM_REG_CLOCKS, + PRCMU_TIMCLK, + PRCMU_PLLSOC0, + PRCMU_PLLSOC1, + PRCMU_PLLDDR, +}; + +/** + * enum ape_opp - APE OPP states definition + * @APE_OPP_INIT: + * @APE_NO_CHANGE: The APE operating point is unchanged + * @APE_100_OPP: The new APE operating point is ape100opp + * @APE_50_OPP: 50% + */ +enum ape_opp { + APE_OPP_INIT = 0x00, + APE_NO_CHANGE = 0x01, + APE_100_OPP = 0x02, + APE_50_OPP = 0x03 +}; + +/** + * enum arm_opp - ARM OPP states definition + * @ARM_OPP_INIT: + * @ARM_NO_CHANGE: The ARM operating point is unchanged + * @ARM_100_OPP: The new ARM operating point is arm100opp + * @ARM_50_OPP: The new ARM operating point is arm50opp + * @ARM_MAX_OPP: Operating point is "max" (more than 100) + * @ARM_MAX_FREQ100OPP: Set max opp if available, else 100 + * @ARM_EXTCLK: The new ARM operating point is armExtClk + */ +enum arm_opp { + ARM_OPP_INIT = 0x00, + ARM_NO_CHANGE = 0x01, + ARM_100_OPP = 0x02, + ARM_50_OPP = 0x03, + ARM_MAX_OPP = 0x04, + ARM_MAX_FREQ100OPP = 0x05, + ARM_EXTCLK = 0x07 +}; + +/** + * enum ddr_opp - DDR OPP states definition + * @DDR_100_OPP: The new DDR operating point is ddr100opp + * @DDR_50_OPP: The new DDR operating point is ddr50opp + * @DDR_25_OPP: The new DDR operating point is ddr25opp + */ +enum ddr_opp { + DDR_100_OPP = 0x00, + DDR_50_OPP = 0x01, + DDR_25_OPP = 0x02, +}; + +/* + * Definitions for controlling ESRAM0 in deep sleep. + */ +#define ESRAM0_DEEP_SLEEP_STATE_OFF 1 +#define ESRAM0_DEEP_SLEEP_STATE_RET 2 + +/** + * enum ddr_pwrst - DDR power states definition + * @DDR_PWR_STATE_UNCHANGED: SDRAM and DDR controller state is unchanged + * @DDR_PWR_STATE_ON: + * @DDR_PWR_STATE_OFFLOWLAT: + * @DDR_PWR_STATE_OFFHIGHLAT: + */ +enum ddr_pwrst { + DDR_PWR_STATE_UNCHANGED = 0x00, + DDR_PWR_STATE_ON = 0x01, + DDR_PWR_STATE_OFFLOWLAT = 0x02, + DDR_PWR_STATE_OFFHIGHLAT = 0x03 +}; + +#include +#include + +#if defined(CONFIG_UX500_SOC_DB8500) || defined(CONFIG_UX500_SOC_DB5500) + +static inline void __init prcmu_early_init(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_early_init(); + else + return db8500_prcmu_early_init(); +} + +static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll) +{ + if (machine_is_u5500()) + return db5500_prcmu_set_power_state(state, keep_ulp_clk, + keep_ap_pll); + else + return db8500_prcmu_set_power_state(state, keep_ulp_clk, + keep_ap_pll); +} + +static inline int prcmu_set_epod(u16 epod_id, u8 epod_state) +{ + if (machine_is_u5500()) + return db5500_prcmu_set_epod(epod_id, epod_state); + else + return db8500_prcmu_set_epod(epod_id, epod_state); +} + +static inline void prcmu_enable_wakeups(u32 wakeups) +{ + if (machine_is_u5500()) + db5500_prcmu_enable_wakeups(wakeups); + else + db8500_prcmu_enable_wakeups(wakeups); +} + +static inline void prcmu_disable_wakeups(void) +{ + prcmu_enable_wakeups(0); +} + +static inline void prcmu_config_abb_event_readout(u32 abb_events) +{ + if (machine_is_u5500()) + db5500_prcmu_config_abb_event_readout(abb_events); + else + db8500_prcmu_config_abb_event_readout(abb_events); +} + +static inline void prcmu_get_abb_event_buffer(void __iomem **buf) +{ + if (machine_is_u5500()) + db5500_prcmu_get_abb_event_buffer(buf); + else + db8500_prcmu_get_abb_event_buffer(buf); +} + +int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size); +int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size); + +int prcmu_config_clkout(u8 clkout, u8 source, u8 div); + +static inline int prcmu_request_clock(u8 clock, bool enable) +{ + if (machine_is_u5500()) + return db5500_prcmu_request_clock(clock, enable); + else + return db8500_prcmu_request_clock(clock, enable); +} + +int prcmu_set_ape_opp(u8 opp); +int prcmu_get_ape_opp(void); +int prcmu_set_ddr_opp(u8 opp); +int prcmu_get_ddr_opp(void); + +static inline int prcmu_set_arm_opp(u8 opp) +{ + if (machine_is_u5500()) + return db5500_prcmu_set_arm_opp(opp); + else + return db8500_prcmu_set_arm_opp(opp); +} + +static inline int prcmu_get_arm_opp(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_get_arm_opp(); + else + return db8500_prcmu_get_arm_opp(); +} + +static inline void prcmu_system_reset(u16 reset_code) +{ + if (machine_is_u5500()) + return db5500_prcmu_system_reset(reset_code); + else + return db8500_prcmu_system_reset(reset_code); +} + +static inline u16 prcmu_get_reset_code(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_get_reset_code(); + else + return db8500_prcmu_get_reset_code(); +} + +void prcmu_ac_wake_req(void); +void prcmu_ac_sleep_req(void); +void prcmu_modem_reset(void); +static inline bool prcmu_is_ac_wake_requested(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_is_ac_wake_requested(); + else + return db8500_prcmu_is_ac_wake_requested(); +} + +static inline int prcmu_set_display_clocks(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_set_display_clocks(); + else + return db8500_prcmu_set_display_clocks(); +} + +static inline int prcmu_disable_dsipll(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_disable_dsipll(); + else + return db8500_prcmu_disable_dsipll(); +} + +static inline int prcmu_enable_dsipll(void) +{ + if (machine_is_u5500()) + return db5500_prcmu_enable_dsipll(); + else + return db8500_prcmu_enable_dsipll(); +} + +static inline int prcmu_config_esram0_deep_sleep(u8 state) +{ + if (machine_is_u5500()) + return db5500_prcmu_config_esram0_deep_sleep(state); + else + return db8500_prcmu_config_esram0_deep_sleep(state); +} +#else + +static inline void __init prcmu_early_init(void) {} + +static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll) +{ + return 0; +} + +static inline int prcmu_set_epod(u16 epod_id, u8 epod_state) +{ + return 0; +} + +static inline void prcmu_enable_wakeups(u32 wakeups) {} + +static inline void prcmu_disable_wakeups(void) {} + +static inline int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) +{ + return -ENOSYS; +} + +static inline int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) +{ + return -ENOSYS; +} + +static inline int prcmu_config_clkout(u8 clkout, u8 source, u8 div) +{ + return 0; +} + +static inline int prcmu_request_clock(u8 clock, bool enable) +{ + return 0; +} + +static inline int prcmu_set_ape_opp(u8 opp) +{ + return 0; +} + +static inline int prcmu_get_ape_opp(void) +{ + return APE_100_OPP; +} + +static inline int prcmu_set_arm_opp(u8 opp) +{ + return 0; +} + +static inline int prcmu_get_arm_opp(void) +{ + return ARM_100_OPP; +} + +static inline int prcmu_set_ddr_opp(u8 opp) +{ + return 0; +} + +static inline int prcmu_get_ddr_opp(void) +{ + return DDR_100_OPP; +} + +static inline void prcmu_system_reset(u16 reset_code) {} + +static inline u16 prcmu_get_reset_code(void) +{ + return 0; +} + +static inline void prcmu_ac_wake_req(void) {} + +static inline void prcmu_ac_sleep_req(void) {} + +static inline void prcmu_modem_reset(void) {} + +static inline bool prcmu_is_ac_wake_requested(void) +{ + return false; +} + +static inline int prcmu_set_display_clocks(void) +{ + return 0; +} + +static inline int prcmu_disable_dsipll(void) +{ + return 0; +} + +static inline int prcmu_enable_dsipll(void) +{ + return 0; +} + +static inline int prcmu_config_esram0_deep_sleep(u8 state) +{ + return 0; +} + +static inline void prcmu_config_abb_event_readout(u32 abb_events) {} + +static inline void prcmu_get_abb_event_buffer(void __iomem **buf) +{ + *buf = NULL; +} + +#endif + +/* PRCMU QoS APE OPP class */ +#define PRCMU_QOS_APE_OPP 1 +#define PRCMU_QOS_DDR_OPP 2 +#define PRCMU_QOS_DEFAULT_VALUE -1 + +#ifdef CONFIG_UX500_PRCMU_QOS_POWER + +unsigned long prcmu_qos_get_cpufreq_opp_delay(void); +void prcmu_qos_set_cpufreq_opp_delay(unsigned long); +void prcmu_qos_force_opp(int, s32); +int prcmu_qos_requirement(int pm_qos_class); +int prcmu_qos_add_requirement(int pm_qos_class, char *name, s32 value); +int prcmu_qos_update_requirement(int pm_qos_class, char *name, s32 new_value); +void prcmu_qos_remove_requirement(int pm_qos_class, char *name); +int prcmu_qos_add_notifier(int prcmu_qos_class, + struct notifier_block *notifier); +int prcmu_qos_remove_notifier(int prcmu_qos_class, + struct notifier_block *notifier); + +#else + +static inline unsigned long prcmu_qos_get_cpufreq_opp_delay(void) +{ + return 0; +} + +static inline void prcmu_qos_set_cpufreq_opp_delay(unsigned long n) {} + +static inline void prcmu_qos_force_opp(int prcmu_qos_class, s32 i) {} + +static inline int prcmu_qos_requirement(int prcmu_qos_class) +{ + return 0; +} + +static inline int prcmu_qos_add_requirement(int prcmu_qos_class, + char *name, s32 value) +{ + return 0; +} + +static inline int prcmu_qos_update_requirement(int prcmu_qos_class, + char *name, s32 new_value) +{ + return 0; +} + +static inline void prcmu_qos_remove_requirement(int prcmu_qos_class, char *name) +{ +} + +static inline int prcmu_qos_add_notifier(int prcmu_qos_class, + struct notifier_block *notifier) +{ + return 0; +} +static inline int prcmu_qos_remove_notifier(int prcmu_qos_class, + struct notifier_block *notifier) +{ + return 0; +} + +#endif + +#endif /* __MACH_PRCMU_H */ -- cgit v1.2.2 From 73180f85f4ffbb66843f8248811b2ade29b22df2 Mon Sep 17 00:00:00 2001 From: Mattias Nilsson Date: Fri, 12 Aug 2011 10:28:10 +0200 Subject: mfd: Move to the new db500 PRCMU API Now that we have a shared API between the DB8500 and DB5500 PRCMU's, switch to using this neutral API instead. We delete the parts of db8500-prcmu.h that is now PRCMU-neutral, and calls will be diverted to respective driver. Common registers are in dbx500-prcmu-regs.h and common accessors and defines in This way we get a a lot more abstraction and code reuse. Signed-off-by: Mattias Nilsson Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/db5500-prcmu.h | 102 +++++++++-- include/linux/mfd/db8500-prcmu.h | 368 +++++++++------------------------------ include/linux/mfd/dbx500-prcmu.h | 8 +- 3 files changed, 174 insertions(+), 304 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/db5500-prcmu.h b/include/linux/mfd/db5500-prcmu.h index f0977986402c..9890687f582d 100644 --- a/include/linux/mfd/db5500-prcmu.h +++ b/include/linux/mfd/db5500-prcmu.h @@ -5,21 +5,35 @@ * * U5500 PRCMU API. */ -#ifndef __MACH_PRCMU_U5500_H -#define __MACH_PRCMU_U5500_H +#ifndef __MFD_DB5500_PRCMU_H +#define __MFD_DB5500_PRCMU_H -#ifdef CONFIG_UX500_SOC_DB5500 +#ifdef CONFIG_MFD_DB5500_PRCMU void db5500_prcmu_early_init(void); - +int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state); +int db5500_prcmu_set_display_clocks(void); +int db5500_prcmu_disable_dsipll(void); +int db5500_prcmu_enable_dsipll(void); int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size); int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size); +void db5500_prcmu_enable_wakeups(u32 wakeups); +int db5500_prcmu_request_clock(u8 clock, bool enable); +void db5500_prcmu_config_abb_event_readout(u32 abb_events); +void db5500_prcmu_get_abb_event_buffer(void __iomem **buf); +int prcmu_resetout(u8 resoutn, u8 state); +int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll); +int db5500_prcmu_config_esram0_deep_sleep(u8 state); +void db5500_prcmu_system_reset(u16 reset_code); +u16 db5500_prcmu_get_reset_code(void); +bool db5500_prcmu_is_ac_wake_requested(void); +int db5500_prcmu_set_arm_opp(u8 opp); +int db5500_prcmu_get_arm_opp(void); #else /* !CONFIG_UX500_SOC_DB5500 */ -static inline void db5500_prcmu_early_init(void) -{ -} +static inline void db5500_prcmu_early_init(void) {} static inline int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) { @@ -31,15 +45,75 @@ static inline int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) return -ENOSYS; } -#endif /* CONFIG_UX500_SOC_DB5500 */ +static inline int db5500_prcmu_request_clock(u8 clock, bool enable) +{ + return 0; +} + +static inline int db5500_prcmu_set_display_clocks(void) +{ + return 0; +} + +static inline int db5500_prcmu_disable_dsipll(void) +{ + return 0; +} + +static inline int db5500_prcmu_enable_dsipll(void) +{ + return 0; +} -static inline int db5500_prcmu_config_abb_event_readout(u32 abb_events) +static inline int db5500_prcmu_config_esram0_deep_sleep(u8 state) { -#ifdef CONFIG_MACH_U5500_SIMULATOR return 0; -#else - return -1; -#endif } -#endif /* __MACH_PRCMU_U5500_H */ +static inline void db5500_prcmu_enable_wakeups(u32 wakeups) {} + +static inline int prcmu_resetout(u8 resoutn, u8 state) +{ + return 0; +} + +static inline int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state) +{ + return 0; +} + +static inline void db5500_prcmu_get_abb_event_buffer(void __iomem **buf) {} +static inline void db5500_prcmu_config_abb_event_readout(u32 abb_events) {} + +static inline int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll) +{ + return 0; +} + +static inline void db5500_prcmu_system_reset(u16 reset_code) {} + +static inline u16 db5500_prcmu_get_reset_code(void) +{ + return 0; +} + +static inline bool db5500_prcmu_is_ac_wake_requested(void) +{ + return 0; +} + +static inline int db5500_prcmu_set_arm_opp(u8 opp) +{ + return 0; +} + +static inline int db5500_prcmu_get_arm_opp(void) +{ + return 0; +} + + +#endif /* CONFIG_MFD_DB5500_PRCMU */ + +#endif /* __MFD_DB5500_PRCMU_H */ diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index 917dbcab701c..60d27f7bfc1f 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -11,7 +11,6 @@ #define __MFD_DB8500_PRCMU_H #include -#include /* This portion previously known as */ @@ -133,7 +132,7 @@ enum ap_pwrst { * @APEXECUTE_TO_APIDLE: Power state transition from ApExecute to ApIdle */ enum ap_pwrst_trans { - NO_TRANSITION = 0x00, + PRCMU_AP_NO_CHANGE = 0x00, APEXECUTE_TO_APSLEEP = 0x01, APIDLE_TO_APSLEEP = 0x02, /* To be removed */ PRCMU_AP_SLEEP = 0x01, @@ -145,54 +144,6 @@ enum ap_pwrst_trans { PRCMU_AP_DEEP_IDLE = 0x07, }; -/** - * enum ddr_pwrst - DDR power states definition - * @DDR_PWR_STATE_UNCHANGED: SDRAM and DDR controller state is unchanged - * @DDR_PWR_STATE_ON: - * @DDR_PWR_STATE_OFFLOWLAT: - * @DDR_PWR_STATE_OFFHIGHLAT: - */ -enum ddr_pwrst { - DDR_PWR_STATE_UNCHANGED = 0x00, - DDR_PWR_STATE_ON = 0x01, - DDR_PWR_STATE_OFFLOWLAT = 0x02, - DDR_PWR_STATE_OFFHIGHLAT = 0x03 -}; - -/** - * enum arm_opp - ARM OPP states definition - * @ARM_OPP_INIT: - * @ARM_NO_CHANGE: The ARM operating point is unchanged - * @ARM_100_OPP: The new ARM operating point is arm100opp - * @ARM_50_OPP: The new ARM operating point is arm50opp - * @ARM_MAX_OPP: Operating point is "max" (more than 100) - * @ARM_MAX_FREQ100OPP: Set max opp if available, else 100 - * @ARM_EXTCLK: The new ARM operating point is armExtClk - */ -enum arm_opp { - ARM_OPP_INIT = 0x00, - ARM_NO_CHANGE = 0x01, - ARM_100_OPP = 0x02, - ARM_50_OPP = 0x03, - ARM_MAX_OPP = 0x04, - ARM_MAX_FREQ100OPP = 0x05, - ARM_EXTCLK = 0x07 -}; - -/** - * enum ape_opp - APE OPP states definition - * @APE_OPP_INIT: - * @APE_NO_CHANGE: The APE operating point is unchanged - * @APE_100_OPP: The new APE operating point is ape100opp - * @APE_50_OPP: 50% - */ -enum ape_opp { - APE_OPP_INIT = 0x00, - APE_NO_CHANGE = 0x01, - APE_100_OPP = 0x02, - APE_50_OPP = 0x03 -}; - /** * enum hw_acc_state - State definition for hardware accelerator * @HW_NO_CHANGE: The hardware accelerator state must remain unchanged @@ -469,26 +420,6 @@ enum auto_enable { /* End of file previously known as prcmu-fw-defs_v1.h */ -/* PRCMU Wakeup defines */ -enum prcmu_wakeup_index { - PRCMU_WAKEUP_INDEX_RTC, - PRCMU_WAKEUP_INDEX_RTT0, - PRCMU_WAKEUP_INDEX_RTT1, - PRCMU_WAKEUP_INDEX_HSI0, - PRCMU_WAKEUP_INDEX_HSI1, - PRCMU_WAKEUP_INDEX_USB, - PRCMU_WAKEUP_INDEX_ABB, - PRCMU_WAKEUP_INDEX_ABB_FIFO, - PRCMU_WAKEUP_INDEX_ARM, - NUM_PRCMU_WAKEUP_INDICES -}; -#define PRCMU_WAKEUP(_name) (BIT(PRCMU_WAKEUP_INDEX_##_name)) - -/* PRCMU QoS APE OPP class */ -#define PRCMU_QOS_APE_OPP 1 -#define PRCMU_QOS_DDR_OPP 2 -#define PRCMU_QOS_DEFAULT_VALUE -1 - /** * enum hw_acc_dev - enum for hw accelerators * @HW_ACC_SVAMMDSP: for SVAMMDSP @@ -526,64 +457,6 @@ enum hw_acc_dev { NUM_HW_ACC }; -/* - * Ids for all EPODs (power domains) - * - EPOD_ID_SVAMMDSP: power domain for SVA MMDSP - * - EPOD_ID_SVAPIPE: power domain for SVA pipe - * - EPOD_ID_SIAMMDSP: power domain for SIA MMDSP - * - EPOD_ID_SIAPIPE: power domain for SIA pipe - * - EPOD_ID_SGA: power domain for SGA - * - EPOD_ID_B2R2_MCDE: power domain for B2R2 and MCDE - * - EPOD_ID_ESRAM12: power domain for ESRAM 1 and 2 - * - EPOD_ID_ESRAM34: power domain for ESRAM 3 and 4 - * - NUM_EPOD_ID: number of power domains - */ -#define EPOD_ID_SVAMMDSP 0 -#define EPOD_ID_SVAPIPE 1 -#define EPOD_ID_SIAMMDSP 2 -#define EPOD_ID_SIAPIPE 3 -#define EPOD_ID_SGA 4 -#define EPOD_ID_B2R2_MCDE 5 -#define EPOD_ID_ESRAM12 6 -#define EPOD_ID_ESRAM34 7 -#define NUM_EPOD_ID 8 - -/* - * state definition for EPOD (power domain) - * - EPOD_STATE_NO_CHANGE: The EPOD should remain unchanged - * - EPOD_STATE_OFF: The EPOD is switched off - * - EPOD_STATE_RAMRET: The EPOD is switched off with its internal RAM in - * retention - * - EPOD_STATE_ON_CLK_OFF: The EPOD is switched on, clock is still off - * - EPOD_STATE_ON: Same as above, but with clock enabled - */ -#define EPOD_STATE_NO_CHANGE 0x00 -#define EPOD_STATE_OFF 0x01 -#define EPOD_STATE_RAMRET 0x02 -#define EPOD_STATE_ON_CLK_OFF 0x03 -#define EPOD_STATE_ON 0x04 - -/* - * CLKOUT sources - */ -#define PRCMU_CLKSRC_CLK38M 0x00 -#define PRCMU_CLKSRC_ACLK 0x01 -#define PRCMU_CLKSRC_SYSCLK 0x02 -#define PRCMU_CLKSRC_LCDCLK 0x03 -#define PRCMU_CLKSRC_SDMMCCLK 0x04 -#define PRCMU_CLKSRC_TVCLK 0x05 -#define PRCMU_CLKSRC_TIMCLK 0x06 -#define PRCMU_CLKSRC_CLK009 0x07 -/* These are only valid for CLKOUT1: */ -#define PRCMU_CLKSRC_SIAMMDSPCLK 0x40 -#define PRCMU_CLKSRC_I2CCLK 0x41 -#define PRCMU_CLKSRC_MSP02CLK 0x42 -#define PRCMU_CLKSRC_ARMPLL_OBSCLK 0x43 -#define PRCMU_CLKSRC_HSIRXCLK 0x44 -#define PRCMU_CLKSRC_HSITXCLK 0x45 -#define PRCMU_CLKSRC_ARMCLKFIX 0x46 -#define PRCMU_CLKSRC_HDMICLK 0x47 - /* * Definitions for autonomous power management configuration. */ @@ -620,88 +493,12 @@ struct prcmu_auto_pm_config { u8 sva_policy; }; -/** - * enum ddr_opp - DDR OPP states definition - * @DDR_100_OPP: The new DDR operating point is ddr100opp - * @DDR_50_OPP: The new DDR operating point is ddr50opp - * @DDR_25_OPP: The new DDR operating point is ddr25opp - */ -enum ddr_opp { - DDR_100_OPP = 0x00, - DDR_50_OPP = 0x01, - DDR_25_OPP = 0x02, -}; - -/* - * Clock identifiers. - */ -enum prcmu_clock { - PRCMU_SGACLK, - PRCMU_UARTCLK, - PRCMU_MSP02CLK, - PRCMU_MSP1CLK, - PRCMU_I2CCLK, - PRCMU_SDMMCCLK, - PRCMU_SLIMCLK, - PRCMU_PER1CLK, - PRCMU_PER2CLK, - PRCMU_PER3CLK, - PRCMU_PER5CLK, - PRCMU_PER6CLK, - PRCMU_PER7CLK, - PRCMU_LCDCLK, - PRCMU_BMLCLK, - PRCMU_HSITXCLK, - PRCMU_HSIRXCLK, - PRCMU_HDMICLK, - PRCMU_APEATCLK, - PRCMU_APETRACECLK, - PRCMU_MCDECLK, - PRCMU_IPI2CCLK, - PRCMU_DSIALTCLK, - PRCMU_DMACLK, - PRCMU_B2R2CLK, - PRCMU_TVCLK, - PRCMU_SSPCLK, - PRCMU_RNGCLK, - PRCMU_UICCCLK, - PRCMU_NUM_REG_CLOCKS, - PRCMU_SYSCLK = PRCMU_NUM_REG_CLOCKS, - PRCMU_TIMCLK, -}; - -/* - * Definitions for controlling ESRAM0 in deep sleep. - */ -#define ESRAM0_DEEP_SLEEP_STATE_OFF 1 -#define ESRAM0_DEEP_SLEEP_STATE_RET 2 - -#ifdef CONFIG_MFD_DB8500_PRCMU -void __init prcmu_early_init(void); -int prcmu_set_display_clocks(void); -int prcmu_disable_dsipll(void); -int prcmu_enable_dsipll(void); -#else -static inline void __init prcmu_early_init(void) {} -#endif - #ifdef CONFIG_MFD_DB8500_PRCMU +void db8500_prcmu_early_init(void); int prcmu_set_rc_a2p(enum romcode_write); enum romcode_read prcmu_get_rc_p2a(void); enum ap_pwrst prcmu_get_xp70_current_state(void); -int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll); - -void prcmu_enable_wakeups(u32 wakeups); -static inline void prcmu_disable_wakeups(void) -{ - prcmu_enable_wakeups(0); -} - -void prcmu_config_abb_event_readout(u32 abb_events); -void prcmu_get_abb_event_buffer(void __iomem **buf); -int prcmu_set_arm_opp(u8 opp); -int prcmu_get_arm_opp(void); bool prcmu_has_arm_maxopp(void); bool prcmu_is_u8400(void); int prcmu_set_ape_opp(u8 opp); @@ -710,19 +507,14 @@ int prcmu_request_ape_opp_100_voltage(bool enable); int prcmu_release_usb_wakeup_state(void); int prcmu_set_ddr_opp(u8 opp); int prcmu_get_ddr_opp(void); -unsigned long prcmu_qos_get_cpufreq_opp_delay(void); -void prcmu_qos_set_cpufreq_opp_delay(unsigned long); /* NOTE! Use regulator framework instead */ int prcmu_set_hwacc(u16 hw_acc_dev, u8 state); -int prcmu_set_epod(u16 epod_id, u8 epod_state); void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep, struct prcmu_auto_pm_config *idle); bool prcmu_is_auto_pm_enabled(void); int prcmu_config_clkout(u8 clkout, u8 source, u8 div); -int prcmu_request_clock(u8 clock, bool enable); int prcmu_set_clock_divider(u8 clock, u8 divider); -int prcmu_config_esram0_deep_sleep(u8 state); int prcmu_config_hotdog(u8 threshold); int prcmu_config_hotmon(u8 low, u8 high); int prcmu_start_temp_sense(u16 cycles32k); @@ -732,14 +524,36 @@ int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size); void prcmu_ac_wake_req(void); void prcmu_ac_sleep_req(void); -void prcmu_system_reset(u16 reset_code); void prcmu_modem_reset(void); -bool prcmu_is_ac_wake_requested(void); void prcmu_enable_spi2(void); void prcmu_disable_spi2(void); +int prcmu_config_a9wdog(u8 num, bool sleep_auto_off); +int prcmu_enable_a9wdog(u8 id); +int prcmu_disable_a9wdog(u8 id); +int prcmu_kick_a9wdog(u8 id); +int prcmu_load_a9wdog(u8 id, u32 val); + +void db8500_prcmu_system_reset(u16 reset_code); +int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll); +void db8500_prcmu_enable_wakeups(u32 wakeups); +int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state); +int db8500_prcmu_request_clock(u8 clock, bool enable); +int db8500_prcmu_set_display_clocks(void); +int db8500_prcmu_disable_dsipll(void); +int db8500_prcmu_enable_dsipll(void); +void db8500_prcmu_config_abb_event_readout(u32 abb_events); +void db8500_prcmu_get_abb_event_buffer(void __iomem **buf); +int db8500_prcmu_config_esram0_deep_sleep(u8 state); +u16 db8500_prcmu_get_reset_code(void); +bool db8500_prcmu_is_ac_wake_requested(void); +int db8500_prcmu_set_arm_opp(u8 opp); +int db8500_prcmu_get_arm_opp(void); + #else /* !CONFIG_MFD_DB8500_PRCMU */ +static inline void db8500_prcmu_early_init(void) {} + static inline int prcmu_set_rc_a2p(enum romcode_write code) { return 0; @@ -755,34 +569,12 @@ static inline enum ap_pwrst prcmu_get_xp70_current_state(void) return AP_EXECUTE; } -static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk, - bool keep_ap_pll) -{ - return 0; -} - -static inline void prcmu_enable_wakeups(u32 wakeups) {} - -static inline void prcmu_disable_wakeups(void) {} - -static inline void prcmu_config_abb_event_readout(u32 abb_events) {} - -static inline int prcmu_set_arm_opp(u8 opp) -{ - return 0; -} - -static inline int prcmu_get_arm_opp(void) -{ - return ARM_100_OPP; -} - -static bool prcmu_has_arm_maxopp(void) +static inline bool prcmu_has_arm_maxopp(void) { return false; } -static bool prcmu_is_u8400(void) +static inline bool prcmu_is_u8400(void) { return false; } @@ -817,13 +609,6 @@ static inline int prcmu_get_ddr_opp(void) return DDR_100_OPP; } -static inline unsigned long prcmu_qos_get_cpufreq_opp_delay(void) -{ - return 0; -} - -static inline void prcmu_qos_set_cpufreq_opp_delay(unsigned long n) {} - static inline int prcmu_set_hwacc(u16 hw_acc_dev, u8 state) { return 0; @@ -844,21 +629,11 @@ static inline int prcmu_config_clkout(u8 clkout, u8 source, u8 div) return 0; } -static inline int prcmu_request_clock(u8 clock, bool enable) -{ - return 0; -} - static inline int prcmu_set_clock_divider(u8 clock, u8 divider) { return 0; } -int prcmu_config_esram0_deep_sleep(u8 state) -{ - return 0; -} - static inline int prcmu_config_hotdog(u8 threshold) { return 0; @@ -893,86 +668,107 @@ static inline void prcmu_ac_wake_req(void) {} static inline void prcmu_ac_sleep_req(void) {} -static inline void prcmu_system_reset(u16 reset_code) {} - static inline void prcmu_modem_reset(void) {} -static inline bool prcmu_is_ac_wake_requested(void) +static inline int prcmu_enable_spi2(void) { - return false; + return 0; } -#ifndef CONFIG_UX500_SOC_DB5500 -static inline int prcmu_set_display_clocks(void) +static inline int prcmu_disable_spi2(void) { return 0; } -static inline int prcmu_disable_dsipll(void) +static inline void db8500_prcmu_system_reset(u16 reset_code) {} + +static inline int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll) { return 0; } -static inline int prcmu_enable_dsipll(void) +static inline void db8500_prcmu_enable_wakeups(u32 wakeups) {} + +static inline int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state) { return 0; } -#endif -static inline int prcmu_enable_spi2(void) +static inline int db8500_prcmu_request_clock(u8 clock, bool enable) { return 0; } -static inline int prcmu_disable_spi2(void) +static inline int db8500_prcmu_set_display_clocks(void) { return 0; } -#endif /* !CONFIG_MFD_DB8500_PRCMU */ +static inline int db8500_prcmu_disable_dsipll(void) +{ + return 0; +} + +static inline int db8500_prcmu_enable_dsipll(void) +{ + return 0; +} + +static inline int db8500_prcmu_config_esram0_deep_sleep(u8 state) +{ + return 0; +} + +static inline void db8500_prcmu_config_abb_event_readout(u32 abb_events) {} -#ifdef CONFIG_UX500_PRCMU_QOS_POWER -int prcmu_qos_requirement(int pm_qos_class); -int prcmu_qos_add_requirement(int pm_qos_class, char *name, s32 value); -int prcmu_qos_update_requirement(int pm_qos_class, char *name, s32 new_value); -void prcmu_qos_remove_requirement(int pm_qos_class, char *name); -int prcmu_qos_add_notifier(int prcmu_qos_class, - struct notifier_block *notifier); -int prcmu_qos_remove_notifier(int prcmu_qos_class, - struct notifier_block *notifier); -#else -static inline int prcmu_qos_requirement(int prcmu_qos_class) +static inline void db8500_prcmu_get_abb_event_buffer(void __iomem **buf) {} + +static inline u16 db8500_prcmu_get_reset_code(void) { return 0; } -static inline int prcmu_qos_add_requirement(int prcmu_qos_class, - char *name, s32 value) +static inline int prcmu_config_a9wdog(u8 num, bool sleep_auto_off) { return 0; } -static inline int prcmu_qos_update_requirement(int prcmu_qos_class, - char *name, s32 new_value) +static inline int prcmu_enable_a9wdog(u8 id) { return 0; } -static inline void prcmu_qos_remove_requirement(int prcmu_qos_class, char *name) +static inline int prcmu_disable_a9wdog(u8 id) { + return 0; } -static inline int prcmu_qos_add_notifier(int prcmu_qos_class, - struct notifier_block *notifier) +static inline int prcmu_kick_a9wdog(u8 id) { return 0; } -static inline int prcmu_qos_remove_notifier(int prcmu_qos_class, - struct notifier_block *notifier) + +static inline int prcmu_load_a9wdog(u8 id, u32 val) { return 0; } -#endif +static inline bool db8500_prcmu_is_ac_wake_requested(void) +{ + return 0; +} + +static inline int db8500_prcmu_set_arm_opp(u8 opp) +{ + return 0; +} + +static inline int db8500_prcmu_get_arm_opp(void) +{ + return 0; +} + +#endif /* !CONFIG_MFD_DB8500_PRCMU */ #endif /* __MFD_DB8500_PRCMU_H */ diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index 6c7584d69d8f..bac942f959c1 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -240,7 +240,7 @@ static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk, static inline int prcmu_set_epod(u16 epod_id, u8 epod_state) { if (machine_is_u5500()) - return db5500_prcmu_set_epod(epod_id, epod_state); + return -EINVAL; else return db8500_prcmu_set_epod(epod_id, epod_state); } @@ -295,7 +295,7 @@ int prcmu_get_ddr_opp(void); static inline int prcmu_set_arm_opp(u8 opp) { if (machine_is_u5500()) - return db5500_prcmu_set_arm_opp(opp); + return -EINVAL; else return db8500_prcmu_set_arm_opp(opp); } @@ -303,7 +303,7 @@ static inline int prcmu_set_arm_opp(u8 opp) static inline int prcmu_get_arm_opp(void) { if (machine_is_u5500()) - return db5500_prcmu_get_arm_opp(); + return -EINVAL; else return db8500_prcmu_get_arm_opp(); } @@ -362,7 +362,7 @@ static inline int prcmu_enable_dsipll(void) static inline int prcmu_config_esram0_deep_sleep(u8 state) { if (machine_is_u5500()) - return db5500_prcmu_config_esram0_deep_sleep(state); + return -EINVAL; else return db8500_prcmu_config_esram0_deep_sleep(state); } -- cgit v1.2.2 From feb836992437c9b8b53988da30880e0e6e93ac8b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 24 Oct 2011 15:24:10 +0200 Subject: gpiolib: Ensure struct gpio is always defined Currently struct gpio is only defined when using gpiolib which makes the stub gpio_request_array() much less useful in drivers than is ideal as they can't work with struct gpio. Since there are no other definitions in kernel instead make the define always available no matter if gpiolib is selectable or selected, ensuring that drivers can always use the type. Signed-off-by: Mark Brown Signed-off-by: Grant Likely --- include/linux/gpio.h | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 17b5a0d80e42..38ac48b7d3a8 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -14,6 +14,18 @@ #define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW) #define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH) +/** + * struct gpio - a structure describing a GPIO with configuration + * @gpio: the GPIO number + * @flags: GPIO configuration as specified by GPIOF_* + * @label: a literal description string of this GPIO + */ +struct gpio { + unsigned gpio; + unsigned long flags; + const char *label; +}; + #ifdef CONFIG_GENERIC_GPIO #include @@ -24,18 +36,8 @@ #include struct device; -struct gpio; struct gpio_chip; -/* - * Some platforms don't support the GPIO programming interface. - * - * In case some driver uses it anyway (it should normally have - * depended on GENERIC_GPIO), these routines help the compiler - * optimize out much GPIO-related code ... or trigger a runtime - * warning when something is wrongly called. - */ - static inline bool gpio_is_valid(int number) { return false; -- cgit v1.2.2 From 9562ad9ab36df7ccef920d119f3b5100025db95f Mon Sep 17 00:00:00 2001 From: Tao Ma Date: Mon, 24 Oct 2011 16:11:30 +0200 Subject: block: Remove the control of complete cpu from bio. bio originally has the functionality to set the complete cpu, but it is broken. Chirstoph said that "This code is unused, and from the all the discussions lately pretty obviously broken. The only thing keeping it serves is creating more confusion and possibly more bugs." And Jens replied with "We can kill bio_set_completion_cpu(). I'm fine with leaving cpu control to the request based drivers, they are the only ones that can toggle the setting anyway". So this patch tries to remove all the work of controling complete cpu from a bio. Cc: Shaohua Li Cc: Christoph Hellwig Signed-off-by: Tao Ma Signed-off-by: Jens Axboe --- include/linux/bio.h | 8 -------- include/linux/blk_types.h | 11 ++++------- 2 files changed, 4 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bio.h b/include/linux/bio.h index ce33e6868a2f..a3c071c9e189 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -268,14 +268,6 @@ extern struct bio_vec *bvec_alloc_bs(gfp_t, int, unsigned long *, struct bio_set extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int); extern unsigned int bvec_nr_vecs(unsigned short idx); -/* - * Allow queuer to specify a completion CPU for this bio - */ -static inline void bio_set_completion_cpu(struct bio *bio, unsigned int cpu) -{ - bio->bi_comp_cpu = cpu; -} - /* * bio_set is used to allow other portions of the IO system to * allocate their own private memory pools for bio and iovec structures. diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 71fc53bb8f1c..4053cbd4490e 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -59,8 +59,6 @@ struct bio { unsigned int bi_max_vecs; /* max bvl_vecs we can hold */ - unsigned int bi_comp_cpu; /* completion CPU */ - atomic_t bi_cnt; /* pin count */ struct bio_vec *bi_io_vec; /* the actual vec list */ @@ -93,11 +91,10 @@ struct bio { #define BIO_BOUNCED 5 /* bio is a bounce bio */ #define BIO_USER_MAPPED 6 /* contains user pages */ #define BIO_EOPNOTSUPP 7 /* not supported */ -#define BIO_CPU_AFFINE 8 /* complete bio on same CPU as submitted */ -#define BIO_NULL_MAPPED 9 /* contains invalid user pages */ -#define BIO_FS_INTEGRITY 10 /* fs owns integrity data, not block layer */ -#define BIO_QUIET 11 /* Make BIO Quiet */ -#define BIO_MAPPED_INTEGRITY 12/* integrity metadata has been remapped */ +#define BIO_NULL_MAPPED 8 /* contains invalid user pages */ +#define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */ +#define BIO_QUIET 10 /* Make BIO Quiet */ +#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */ #define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag))) /* -- cgit v1.2.2 From 5762c20593b6b959f1470dc6f1ff4ca4d9570f8d Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 24 Oct 2011 11:53:32 +0200 Subject: dt: Add empty of_match_node() macro Add an empty macro for of_match_node() that will save some '#ifdef CONFIG_OF' for non-dt builds. I have chosen to use a macro instead of a function to be able to avoid defining the first parameter. In fact, this "struct of_device_id *" first parameter is usualy not defined as well on non-dt builds. Signed-off-by: Nicolas Ferre Acked-by: Grant Likely --- include/linux/of.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 736b7477beb2..92c40a142243 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -303,6 +303,7 @@ static inline struct device_node *of_parse_phandle(struct device_node *np, } #define of_match_ptr(_ptr) NULL +#define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ static inline int of_property_read_u32(const struct device_node *np, -- cgit v1.2.2 From 9d97e5c81e15afaef65d00f077f863c94f750839 Mon Sep 17 00:00:00 2001 From: Donggeun Kim Date: Wed, 7 Sep 2011 18:49:08 +0900 Subject: hwmon: Add driver for EXYNOS4 TMU This patch allows to read temperature from TMU(Thermal Management Unit) of SAMSUNG EXYNOS4 series of SoC. Signed-off-by: Donggeun Kim Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Guenter Roeck --- include/linux/platform_data/exynos4_tmu.h | 83 +++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 include/linux/platform_data/exynos4_tmu.h (limited to 'include/linux') diff --git a/include/linux/platform_data/exynos4_tmu.h b/include/linux/platform_data/exynos4_tmu.h new file mode 100644 index 000000000000..39e038cca590 --- /dev/null +++ b/include/linux/platform_data/exynos4_tmu.h @@ -0,0 +1,83 @@ +/* + * exynos4_tmu.h - Samsung EXYNOS4 TMU (Thermal Management Unit) + * + * Copyright (C) 2011 Samsung Electronics + * Donggeun Kim + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _LINUX_EXYNOS4_TMU_H +#define _LINUX_EXYNOS4_TMU_H + +enum calibration_type { + TYPE_ONE_POINT_TRIMMING, + TYPE_TWO_POINT_TRIMMING, + TYPE_NONE, +}; + +/** + * struct exynos4_tmu_platform_data + * @threshold: basic temperature for generating interrupt + * 25 <= threshold <= 125 [unit: degree Celsius] + * @trigger_levels: array for each interrupt levels + * [unit: degree Celsius] + * 0: temperature for trigger_level0 interrupt + * condition for trigger_level0 interrupt: + * current temperature > threshold + trigger_levels[0] + * 1: temperature for trigger_level1 interrupt + * condition for trigger_level1 interrupt: + * current temperature > threshold + trigger_levels[1] + * 2: temperature for trigger_level2 interrupt + * condition for trigger_level2 interrupt: + * current temperature > threshold + trigger_levels[2] + * 3: temperature for trigger_level3 interrupt + * condition for trigger_level3 interrupt: + * current temperature > threshold + trigger_levels[3] + * @trigger_level0_en: + * 1 = enable trigger_level0 interrupt, + * 0 = disable trigger_level0 interrupt + * @trigger_level1_en: + * 1 = enable trigger_level1 interrupt, + * 0 = disable trigger_level1 interrupt + * @trigger_level2_en: + * 1 = enable trigger_level2 interrupt, + * 0 = disable trigger_level2 interrupt + * @trigger_level3_en: + * 1 = enable trigger_level3 interrupt, + * 0 = disable trigger_level3 interrupt + * @gain: gain of amplifier in the positive-TC generator block + * 0 <= gain <= 15 + * @reference_voltage: reference voltage of amplifier + * in the positive-TC generator block + * 0 <= reference_voltage <= 31 + * @cal_type: calibration type for temperature + * + * This structure is required for configuration of exynos4_tmu driver. + */ +struct exynos4_tmu_platform_data { + u8 threshold; + u8 trigger_levels[4]; + bool trigger_level0_en; + bool trigger_level1_en; + bool trigger_level2_en; + bool trigger_level3_en; + + u8 gain; + u8 reference_voltage; + + enum calibration_type cal_type; +}; +#endif /* _LINUX_EXYNOS4_TMU_H */ -- cgit v1.2.2 From 940ab88962bc1aff3273a8356d64577a6e386736 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Wed, 5 Oct 2011 11:29:49 -0600 Subject: drivercore: Add helper macro for platform_driver boilerplate For simple modules that contain a single platform_driver without any additional setup code then ends up being a block of duplicated boilerplate. This patch adds a new macro, module_platform_driver(), which replaces the module_init()/module_exit() registrations with template functions. Signed-off-by: Grant Likely Acked-by: Greg Kroah-Hartman Reviewed-by: Magnus Damm Reviewed-by: Mark Brown Reviewed-by: Stephen Boyd --- include/linux/platform_device.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 27bb05aae70d..08de528afd66 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -146,6 +146,23 @@ static inline void platform_set_drvdata(struct platform_device *pdev, void *data dev_set_drvdata(&pdev->dev, data); } +/* module_platform_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit() + */ +#define module_platform_driver(__platform_driver) \ +static int __init __platform_driver##_init(void) \ +{ \ + return platform_driver_register(&(__platform_driver)); \ +} \ +module_init(__platform_driver##_init); \ +static void __exit __platform_driver##_exit(void) \ +{ \ + platform_driver_unregister(&(__platform_driver)); \ +} \ +module_exit(__platform_driver##_exit); + extern struct platform_device *platform_create_bundle(struct platform_driver *driver, int (*probe)(struct platform_device *), struct resource *res, unsigned int n_res, -- cgit v1.2.2 From d99085605cd245d8f24858e9d0b06013e13aa044 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 25 Oct 2011 14:16:58 +0300 Subject: SUNRPC: introduce svc helpers for prepairing rpcbind infrastructure This helpers will be used only for those services, that will send portmapper registration calls. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index d926fd1a5313..ad09bed239fc 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -136,6 +136,8 @@ void rpc_shutdown_client(struct rpc_clnt *); void rpc_release_client(struct rpc_clnt *); void rpc_task_release_client(struct rpc_task *); +int rpcb_create_local(void); +void rpcb_put_local(void); int rpcb_register(u32, u32, int, unsigned short); int rpcb_v4_register(const u32 program, const u32 version, const struct sockaddr *address, -- cgit v1.2.2 From 16d0587090ab93206768f726f71d84ecf55e05c4 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Tue, 25 Oct 2011 14:17:28 +0300 Subject: NFSd: call svc rpcbind cleanup explicitly We have to call svc_rpcb_cleanup() explicitly from nfsd_last_thread() since this function is registered as service shutdown callback and thus nobody else will done it for us. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- include/linux/sunrpc/svc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 223588a976a0..5e71a306216f 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -401,6 +401,7 @@ struct svc_procedure { /* * Function prototypes. */ +void svc_rpcb_cleanup(struct svc_serv *serv); struct svc_serv *svc_create(struct svc_program *, unsigned int, void (*shutdown)(struct svc_serv *)); struct svc_rqst *svc_prepare_thread(struct svc_serv *serv, -- cgit v1.2.2 From d5d9a3b12adf339b851c8e595d2ca71c3d211363 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 28 Sep 2011 17:45:15 -0700 Subject: jump_label: use proper atomic_t initializer ATOMIC_INIT() is the proper thing to use. Signed-off-by: Jeremy Fitzhardinge Acked-by: Jason Baron Acked-by: Peter Zijlstra --- include/linux/jump_label.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 66f23dc5e76a..1213e9d63f79 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -28,9 +28,9 @@ struct module; #ifdef HAVE_JUMP_LABEL #ifdef CONFIG_MODULES -#define JUMP_LABEL_INIT {{ 0 }, NULL, NULL} +#define JUMP_LABEL_INIT {ATOMIC_INIT(0), NULL, NULL} #else -#define JUMP_LABEL_INIT {{ 0 }, NULL} +#define JUMP_LABEL_INIT {ATOMIC_INIT(0), NULL} #endif static __always_inline bool static_branch(struct jump_label_key *key) -- cgit v1.2.2 From 37348804e0289087d21ae8bff4c0732030a3c6ac Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 29 Sep 2011 11:10:05 -0700 Subject: jump_label: if a key has already been initialized, don't nop it out If a key has been enabled before jump_label_init() is called, don't nop it out. This removes arch_jump_label_text_poke_early() (which can only nop out a site) and uses arch_jump_label_transform() instead. Signed-off-by: Jeremy Fitzhardinge Acked-by: Jason Baron Acked-by: Peter Zijlstra --- include/linux/jump_label.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 1213e9d63f79..12e804ea32ab 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -44,8 +44,7 @@ extern struct jump_entry __stop___jump_table[]; extern void jump_label_lock(void); extern void jump_label_unlock(void); extern void arch_jump_label_transform(struct jump_entry *entry, - enum jump_label_type type); -extern void arch_jump_label_text_poke_early(jump_label_t addr); + enum jump_label_type type); extern int jump_label_text_reserved(void *start, void *end); extern void jump_label_inc(struct jump_label_key *key); extern void jump_label_dec(struct jump_label_key *key); -- cgit v1.2.2 From 20284aa77c0f6227da4783a920b72dc61d4bcc09 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Mon, 3 Oct 2011 11:01:46 -0700 Subject: jump_label: add arch_jump_label_transform_static() to optimise non-live code updates When updating a newly loaded module, the code is definitely not yet executing on any processor, so it can be updated with no need for any heavyweight synchronization. This patch adds arch_jump_label_static() which is implemented as arch_jump_label_transform() by default, but architectures can override it if it avoids, say, a call to stop_machine(). Signed-off-by: Jeremy Fitzhardinge Acked-by: Jason Baron Acked-by: Peter Zijlstra --- include/linux/jump_label.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 12e804ea32ab..56594e45b011 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -45,6 +45,8 @@ extern void jump_label_lock(void); extern void jump_label_unlock(void); extern void arch_jump_label_transform(struct jump_entry *entry, enum jump_label_type type); +extern void arch_jump_label_transform_static(struct jump_entry *entry, + enum jump_label_type type); extern int jump_label_text_reserved(void *start, void *end); extern void jump_label_inc(struct jump_label_key *key); extern void jump_label_dec(struct jump_label_key *key); -- cgit v1.2.2 From 97ce2c88f9ad42e3c60a9beb9fca87abf3639faa Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 12 Oct 2011 16:17:54 -0700 Subject: jump-label: initialize jump-label subsystem much earlier Initialize jump_labels much, much earlier, so they're available for use during system setup. Signed-off-by: Jeremy Fitzhardinge Acked-by: Peter Zijlstra --- include/linux/jump_label.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 56594e45b011..388b0d425b50 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -16,7 +16,7 @@ struct jump_label_key { # include # define HAVE_JUMP_LABEL -#endif +#endif /* CC_HAVE_ASM_GOTO && CONFIG_JUMP_LABEL */ enum jump_label_type { JUMP_LABEL_DISABLE = 0, @@ -41,6 +41,7 @@ static __always_inline bool static_branch(struct jump_label_key *key) extern struct jump_entry __start___jump_table[]; extern struct jump_entry __stop___jump_table[]; +extern void jump_label_init(void); extern void jump_label_lock(void); extern void jump_label_unlock(void); extern void arch_jump_label_transform(struct jump_entry *entry, @@ -53,7 +54,7 @@ extern void jump_label_dec(struct jump_label_key *key); extern bool jump_label_enabled(struct jump_label_key *key); extern void jump_label_apply_nops(struct module *mod); -#else +#else /* !HAVE_JUMP_LABEL */ #include @@ -63,6 +64,10 @@ struct jump_label_key { atomic_t enabled; }; +static __always_inline void jump_label_init(void) +{ +} + static __always_inline bool static_branch(struct jump_label_key *key) { if (unlikely(atomic_read(&key->enabled))) @@ -97,7 +102,6 @@ static inline int jump_label_apply_nops(struct module *mod) { return 0; } +#endif /* HAVE_JUMP_LABEL */ -#endif - -#endif +#endif /* _LINUX_JUMP_LABEL_H */ -- cgit v1.2.2 From 6ab00d465a1c8c02c2216f8220727282f3aa50b5 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Aug 2011 09:41:59 -0700 Subject: libceph: create messenger with client This simplifies the init/shutdown paths, and makes client->msgr available during the rest of the setup process. Signed-off-by: Sage Weil --- include/linux/ceph/libceph.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 563755181c1e..95bd8502e715 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -215,7 +215,9 @@ extern void ceph_destroy_options(struct ceph_options *opt); extern int ceph_compare_options(struct ceph_options *new_opt, struct ceph_client *client); extern struct ceph_client *ceph_create_client(struct ceph_options *opt, - void *private); + void *private, + unsigned supported_features, + unsigned required_features); extern u64 ceph_client_id(struct ceph_client *client); extern void ceph_destroy_client(struct ceph_client *client); extern int __ceph_open_session(struct ceph_client *client, -- cgit v1.2.2 From b61c27636fffbaf1980e675282777b9467254a40 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Aug 2011 15:03:46 -0700 Subject: libceph: don't complain on msgpool alloc failures The pool allocation failures are masked by the pool; there is no need to spam the console about them. (That's the whole point of having the pool in the first place.) Mark msg allocations whose failure is safely handled as such. Signed-off-by: Sage Weil --- include/linux/ceph/messenger.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index d7adf151d335..bbd4a4bb2c6b 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -238,7 +238,8 @@ extern void ceph_con_keepalive(struct ceph_connection *con); extern struct ceph_connection *ceph_con_get(struct ceph_connection *con); extern void ceph_con_put(struct ceph_connection *con); -extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags); +extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags, + bool can_fail); extern void ceph_msg_kfree(struct ceph_msg *m); -- cgit v1.2.2 From b1e4d20cbf2ef8e27515da032b95fdcbb5b06bf1 Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Mon, 10 Oct 2011 00:03:37 +0200 Subject: params: make dashes and underscores in parameter names truly equal The user may use "foo-bar" for a kernel parameter defined as "foo_bar". Make sure it works the other way around too. Apply the equality of dashes and underscores on early_params and __setup params as well. The example given in Documentation/kernel-parameters.txt indicates that this is the intended behaviour. With the patch the kernel accepts "log-buf-len=1M" as expected. https://bugzilla.redhat.com/show_bug.cgi?id=744545 Signed-off-by: Michal Schmidt Signed-off-by: Rusty Russell (neatened implementations) --- include/linux/moduleparam.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index ddaae98c53f9..fffb10bd5514 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -262,6 +262,26 @@ static inline void __kernel_param_unlock(void) .str = &__param_string_##name, 0, perm); \ __MODULE_PARM_TYPE(name, "string") +/** + * parameq - checks if two parameter names match + * @name1: parameter name 1 + * @name2: parameter name 2 + * + * Returns true if the two parameter names are equal. + * Dashes (-) are considered equal to underscores (_). + */ +extern bool parameq(const char *name1, const char *name2); + +/** + * parameqn - checks if two parameter names match + * @name1: parameter name 1 + * @name2: parameter name 2 + * @n: the length to compare + * + * Similar to parameq(), except it compares @n characters. + */ +extern bool parameqn(const char *name1, const char *name2, size_t n); + /* Called on module insert or kernel boot */ extern int parse_args(const char *name, char *args, -- cgit v1.2.2 From 2c96a293bbd6b34698c6710ea8607049956247c4 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Thu, 11 Aug 2011 15:25:41 +0000 Subject: mmc: atmel-mci: change namespace Homogenize namespace to atmci. Signed-off-by: Ludovic Desroches Signed-off-by: Nicolas Ferre Signed-off-by: Chris Ball --- include/linux/atmel-mci.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h index 3e09b345f4d6..4c7a4b2104bf 100644 --- a/include/linux/atmel-mci.h +++ b/include/linux/atmel-mci.h @@ -1,7 +1,7 @@ #ifndef __LINUX_ATMEL_MCI_H #define __LINUX_ATMEL_MCI_H -#define ATMEL_MCI_MAX_NR_SLOTS 2 +#define ATMCI_MAX_NR_SLOTS 2 /** * struct mci_slot_pdata - board-specific per-slot configuration @@ -33,7 +33,7 @@ struct mci_slot_pdata { */ struct mci_platform_data { struct mci_dma_data *dma_slave; - struct mci_slot_pdata slot[ATMEL_MCI_MAX_NR_SLOTS]; + struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS]; }; #endif /* __LINUX_ATMEL_MCI_H */ -- cgit v1.2.2 From 1ebbe3d31fd96865b4d4874f3c74fef0e386fb79 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Thu, 11 Aug 2011 15:25:46 +0000 Subject: mmc: atmel-mci: use ATMEL_PDC_SCND_BUF_OFF instead of a literal value Signed-off-by: Ludovic Desroches Signed-off-by: Nicolas Ferre Signed-off-by: Chris Ball --- include/linux/atmel_pdc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/atmel_pdc.h b/include/linux/atmel_pdc.h index 5058a31d2ce8..63499ce806ea 100644 --- a/include/linux/atmel_pdc.h +++ b/include/linux/atmel_pdc.h @@ -33,4 +33,6 @@ #define ATMEL_PDC_PTSR 0x124 /* Transfer Status Register */ +#define ATMEL_PDC_SCND_BUF_OFF 0x10 /* Offset between first and second buffer registers */ + #endif -- cgit v1.2.2 From 1b676f70c108cda90cf9d114d16c677584400efc Mon Sep 17 00:00:00 2001 From: Per Forlin Date: Fri, 19 Aug 2011 14:52:37 +0200 Subject: mmc: core: add random fault injection This adds support to inject data errors after a completed host transfer. The mmc core will return error even though the host transfer is successful. This simple fault injection proved to be very useful to test the non-blocking error handling in the mmc_blk_issue_rw_rq(). Random faults can also test how the host driver handles pre_req() and post_req() in case of errors. Signed-off-by: Per Forlin Acked-by: Akinobu Mita Reviewed-by: Linus Walleij Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 1d09562ccf73..4c4bddf5ef61 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -12,6 +12,7 @@ #include #include +#include #include #include @@ -302,6 +303,10 @@ struct mmc_host { struct mmc_async_req *areq; /* active async req */ +#ifdef CONFIG_FAIL_MMC_REQUEST + struct fault_attr fail_mmc_request; +#endif + unsigned long private[0] ____cacheline_aligned; }; -- cgit v1.2.2 From d5098cb63b3f13da2a2b230b3566ac7b5dfa4f28 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Fri, 26 Aug 2011 10:42:39 +0200 Subject: mmc: sdhi: Allow named IRQs to use specific handlers Allow named IRQs to use corresponding specific handlers. If named IRQs are used, at least an "sdcard" IRQ has to be specified by the platform. If names are not used, an arbitrary number of IRQs can be provided by the platform, in which case the generic ISR will be used for each of them. Cc: Guennadi Liakhovetski Acked-by: Magnus Damm Signed-off-by: Simon Horman [g.liakhovetski@gmx.de: style and typo corrections, platform data check] Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mmc/sh_mobile_sdhi.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mobile_sdhi.h b/include/linux/mmc/sh_mobile_sdhi.h index bd50b365167f..71b805451bd8 100644 --- a/include/linux/mmc/sh_mobile_sdhi.h +++ b/include/linux/mmc/sh_mobile_sdhi.h @@ -6,6 +6,10 @@ struct platform_device; struct tmio_mmc_data; +#define SH_MOBILE_SDHI_IRQ_CARD_DETECT "card_detect" +#define SH_MOBILE_SDHI_IRQ_SDCARD "sdcard" +#define SH_MOBILE_SDHI_IRQ_SDIO "sdio" + struct sh_mobile_sdhi_info { int dma_slave_tx; int dma_slave_rx; -- cgit v1.2.2 From 9a0da648ff3a5020406ac7784eb3b519014f66f6 Mon Sep 17 00:00:00 2001 From: Stefan Nilsson XK Date: Thu, 15 Sep 2011 17:43:04 +0200 Subject: mmc: sdio: Workaround for dev with broken CMD53 Adds a quirk which can be turned on for SDIO devices that do not support 512 byte requests in byte mode during CMD53. These requests will always be sent in block mode instead. This patch also enables this quirk for ST-Ericsson CW1200 WLAN device. Signed-off-by: Stefan Nilsson XK Signed-off-by: Ulf HANSSON Acked-by: Linus Walleij Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index b460fc2af8a1..6dfb293326e2 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -188,6 +188,8 @@ struct mmc_card { #define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */ #define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */ #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ +#define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512 bytes in */ + /* byte mode */ unsigned int erase_size; /* erase size in sectors */ unsigned int erase_shift; /* if erase unit is power 2 */ @@ -377,6 +379,11 @@ static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c) return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF; } +static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c) +{ + return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512; +} + #define mmc_card_name(c) ((c)->cid.prod_name) #define mmc_card_id(c) (dev_name(&(c)->dev)) -- cgit v1.2.2 From 7c8a2829c22a270acadc6aa3a937e2e7956b19f5 Mon Sep 17 00:00:00 2001 From: Per Forlin Date: Mon, 29 Aug 2011 15:35:58 +0200 Subject: mmc: core: clarify how to use post_req in case of errors The err condition in post_req() is set to undo a call made to pre_req() that hasn't been started yet. The err condition is not set if an MMC request returns an error. Signed-off-by: Per Forlin Acked-by: Linus Walleij Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 4c4bddf5ef61..340cc0c9409f 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -109,6 +109,9 @@ struct mmc_host_ops { * It is optional for the host to implement pre_req and post_req in * order to support double buffering of requests (prepare one * request while another request is active). + * pre_req() must always be followed by a post_req(). + * To undo a call made to pre_req(), call post_req() with + * a nonzero err condition. */ void (*post_req)(struct mmc_host *host, struct mmc_request *req, int err); -- cgit v1.2.2 From b2499518b5ad7e28bb3ed348fd3f370eeb1e36c0 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 29 Aug 2011 16:42:11 +0300 Subject: mmc: core: add eMMC hardware reset support eMMC's may have a hardware reset line. This patch provides a host controller operation to implement hardware reset and a function to reset and reinitialize the card. Also, for MMC, the reset is always performed before initialization. The host must set the new host capability MMC_CAP_HW_RESET to enable hardware reset. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 1 + include/linux/mmc/core.h | 3 +++ include/linux/mmc/host.h | 2 ++ include/linux/mmc/mmc.h | 4 ++++ 4 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 6dfb293326e2..5294ddf382ae 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -50,6 +50,7 @@ struct mmc_ext_csd { u8 rel_sectors; u8 rel_param; u8 part_config; + u8 rst_n_function; unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ unsigned int hs_max_dtr; diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index b8b1b7a311f1..56e5625b6f41 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -162,6 +162,9 @@ extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, extern unsigned int mmc_calc_max_discard(struct mmc_card *card); extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); +extern int mmc_hw_reset(struct mmc_host *host); +extern int mmc_hw_reset_check(struct mmc_host *host); +extern int mmc_can_reset(struct mmc_card *card); extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *); extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 340cc0c9409f..b2aefea97048 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -151,6 +151,7 @@ struct mmc_host_ops { int (*execute_tuning)(struct mmc_host *host); void (*enable_preset_value)(struct mmc_host *host, bool enable); int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv); + void (*hw_reset)(struct mmc_host *host); }; struct mmc_card; @@ -233,6 +234,7 @@ struct mmc_host { #define MMC_CAP_MAX_CURRENT_600 (1 << 28) /* Host max current limit is 600mA */ #define MMC_CAP_MAX_CURRENT_800 (1 << 29) /* Host max current limit is 800mA */ #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ +#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ mmc_pm_flag_t pm_caps; /* supported pm features */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 5a794cb503ea..ed8fca890ee2 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -272,6 +272,7 @@ struct _mmc_csd { #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ +#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ #define EXT_CSD_PART_CONFIG 179 /* R/W */ @@ -328,6 +329,9 @@ struct _mmc_csd { #define EXT_CSD_SEC_BD_BLK_EN BIT(2) #define EXT_CSD_SEC_GB_CL_EN BIT(4) +#define EXT_CSD_RST_N_EN_MASK 0x3 +#define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */ + /* * MMC_SWITCH access modes */ -- cgit v1.2.2 From 714c4a6e3a0f730834ec8a8bc83b2a6da33f54dc Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 30 Aug 2011 18:26:39 +0200 Subject: mmc: sh_mmcif: simplify platform data Provide platforms with a simplified way to specify MMCIF DMA slave IDs in a way, similar to SDHI and other sh_dma clients. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mmc/sh_mmcif.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 0222cd8ebe76..04ff452bf5c3 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -41,7 +41,9 @@ struct sh_mmcif_plat_data { void (*set_pwr)(struct platform_device *pdev, int state); void (*down_pwr)(struct platform_device *pdev); int (*get_cd)(struct platform_device *pdef); - struct sh_mmcif_dma *dma; + struct sh_mmcif_dma *dma; /* Deprecated. Instead */ + unsigned int slave_id_tx; /* use embedded slave_id_[tr]x */ + unsigned int slave_id_rx; u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */ unsigned long caps; u32 ocr; -- cgit v1.2.2 From b87d8dbf6c410b5f2d9b6893c85baa06aa131c7c Mon Sep 17 00:00:00 2001 From: Girish K S Date: Fri, 23 Sep 2011 20:41:47 +0530 Subject: mmc: core: eMMC 4.5 Power Class Selection Feature This patch adds the power class selection feature available for mmc versions 4.0 and above. During the enumeration stage before switching to the lower data bus, check if the power class is supported for the current bus width. If the power class is available then switch to the power class and use the higher data bus. If power class is not supported then switch to the lower data bus in a worst case. Signed-off-by: Girish K S Signed-off-by: Chris Ball --- include/linux/mmc/mmc.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index ed8fca890ee2..50af22730c74 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -279,10 +279,15 @@ struct _mmc_csd { #define EXT_CSD_ERASED_MEM_CONT 181 /* RO */ #define EXT_CSD_BUS_WIDTH 183 /* R/W */ #define EXT_CSD_HS_TIMING 185 /* R/W */ +#define EXT_CSD_POWER_CLASS 187 /* R/W */ #define EXT_CSD_REV 192 /* RO */ #define EXT_CSD_STRUCTURE 194 /* RO */ #define EXT_CSD_CARD_TYPE 196 /* RO */ #define EXT_CSD_PART_SWITCH_TIME 199 /* RO */ +#define EXT_CSD_PWR_CL_52_195 200 /* RO */ +#define EXT_CSD_PWR_CL_26_195 201 /* RO */ +#define EXT_CSD_PWR_CL_52_360 202 /* RO */ +#define EXT_CSD_PWR_CL_26_360 203 /* RO */ #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */ #define EXT_CSD_S_A_TIMEOUT 217 /* RO */ #define EXT_CSD_REL_WR_SEC_C 222 /* RO */ @@ -294,6 +299,11 @@ struct _mmc_csd { #define EXT_CSD_SEC_ERASE_MULT 230 /* RO */ #define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */ #define EXT_CSD_TRIM_MULT 232 /* RO */ +#define EXT_CSD_PWR_CL_200_195 236 /* RO */ +#define EXT_CSD_PWR_CL_200_360 237 /* RO */ +#define EXT_CSD_PWR_CL_DDR_52_195 238 /* RO */ +#define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */ +#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ /* * EXT_CSD field definitions @@ -332,6 +342,10 @@ struct _mmc_csd { #define EXT_CSD_RST_N_EN_MASK 0x3 #define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */ +#define EXT_CSD_PWR_CL_8BIT_MASK 0xF0 /* 8 bit PWR CLS */ +#define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */ +#define EXT_CSD_PWR_CL_8BIT_SHIFT 4 +#define EXT_CSD_PWR_CL_4BIT_SHIFT 0 /* * MMC_SWITCH access modes */ -- cgit v1.2.2 From f7c56ef2af5ae7e4c24c3c79427b38d18ba1d294 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 23 Sep 2011 12:48:21 +0300 Subject: mmc: block: support no access to boot partitions Intel Medfield platform blocks access to eMMC boot partitions which results in switch errors. Since there is no access, mmcboot0/1 devices should not be created. Add a host capability to reflect that. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index b2aefea97048..aed5bc7245f7 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -236,6 +236,10 @@ struct mmc_host { #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ + unsigned int caps2; /* More host capabilities */ + +#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ + mmc_pm_flag_t pm_caps; /* supported pm features */ #ifdef CONFIG_MMC_CLKGATE @@ -404,4 +408,10 @@ static inline int mmc_host_cmd23(struct mmc_host *host) { return host->caps & MMC_CAP_CMD23; } + +static inline int mmc_boot_partition_access(struct mmc_host *host) +{ + return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); +} + #endif /* LINUX_MMC_HOST_H */ -- cgit v1.2.2 From e0c368d571d946ff40f068344b5c2df90c93dd2e Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Thu, 6 Oct 2011 23:41:38 +0900 Subject: mmc: core: general purpose MMC partition support. It allows gerneral purpose partitions in MMC Device. And I try to simply make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei Warkentin. After patching, we see general purpose partitions like this: > cat /proc/partitions 179 0 847872 mmcblk0 179 192 4096 mmcblk0gp3 179 160 4096 mmcblk0gp2 179 128 4096 mmcblk0gp1 179 96 1052672 mmcblk0gp0 179 64 1024 mmcblk0boot1 179 32 1024 mmcblk0boot0 Signed-off-by: Namjae Jeon Acked-by: Andrei Warkentin Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 34 +++++++++++++++++++++++++++++++++- include/linux/mmc/mmc.h | 5 ++++- 2 files changed, 37 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 5294ddf382ae..92762865f7e0 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -12,6 +12,7 @@ #include #include +#include struct mmc_cid { unsigned int manfid; @@ -64,7 +65,6 @@ struct mmc_ext_csd { bool enhanced_area_en; /* enable bit */ unsigned long long enhanced_area_offset; /* Units: Byte */ unsigned int enhanced_area_size; /* Units: KB */ - unsigned int boot_size; /* in bytes */ u8 raw_partition_support; /* 160 */ u8 raw_erased_mem_count; /* 181 */ u8 raw_ext_csd_structure; /* 194 */ @@ -158,6 +158,23 @@ struct sdio_func_tuple; #define SDIO_MAX_FUNCS 7 +/* The number of MMC physical partitions. These consist of: + * boot partitions (2), general purpose partitions (4) in MMC v4.4. + */ +#define MMC_NUM_BOOT_PARTITION 2 +#define MMC_NUM_GP_PARTITION 4 +#define MMC_NUM_PHY_PARTITION 6 + +/* + * MMC Physical partitions + */ +struct mmc_part { + unsigned int size; /* partition size (in bytes) */ + unsigned int part_cfg; /* partition type */ + char name[DISK_NAME_LEN]; + bool force_ro; /* to make boot parts RO by default */ +}; + /* * MMC device */ @@ -219,8 +236,23 @@ struct mmc_card { unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */ struct dentry *debugfs_root; + struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */ + unsigned int nr_parts; }; +/* + * This function fill contents in mmc_part. + */ +static inline void mmc_part_add(struct mmc_card *card, unsigned int size, + unsigned int part_cfg, char *name, int idx, bool ro) +{ + card->part[card->nr_parts].size = size; + card->part[card->nr_parts].part_cfg = part_cfg; + sprintf(card->part[card->nr_parts].name, name, idx); + card->part[card->nr_parts].force_ro = ro; + card->nr_parts++; +} + /* * The world is not perfect and supplies us with broken mmc/sdio devices. * For at least some of these bugs we need a work-around. diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 50af22730c74..ea558eb44c79 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -270,6 +270,7 @@ struct _mmc_csd { * EXT_CSD fields */ +#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ @@ -313,7 +314,9 @@ struct _mmc_csd { #define EXT_CSD_PART_CONFIG_ACC_MASK (0x7) #define EXT_CSD_PART_CONFIG_ACC_BOOT0 (0x1) -#define EXT_CSD_PART_CONFIG_ACC_BOOT1 (0x2) +#define EXT_CSD_PART_CONFIG_ACC_GP0 (0x4) + +#define EXT_CSD_PART_SUPPORT_PART_EN (0x1) #define EXT_CSD_CMD_SET_NORMAL (1<<0) #define EXT_CSD_CMD_SET_SECURE (1<<1) -- cgit v1.2.2 From 66fd8ad5100b5003046aa744a4f12fa31bb831f9 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 3 Oct 2011 15:33:34 +0300 Subject: mmc: sdhci-pci: add runtime pm support Ths patch allows runtime PM for sdhci-pci, runtime suspending after inactivity of 50ms and ensuring runtime resume before SDHC registers are accessed. During runtime suspend, interrupts are masked. The host controller state is restored at runtime resume. For Medfield, the host controller's card detect mechanism is supplanted by an always-on GPIO which provides for card detect wake-up. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball --- include/linux/mmc/sdhci.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 5666f3abfab7..e4b69353678d 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -88,6 +88,10 @@ struct sdhci_host { /* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ #define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) + unsigned int quirks2; /* More deviations from spec. */ + +#define SDHCI_QUIRK2_OWN_CARD_DETECTION (1<<0) + int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ @@ -115,6 +119,8 @@ struct sdhci_host { #define SDHCI_NEEDS_RETUNING (1<<5) /* Host needs retuning */ #define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */ #define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */ +#define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */ +#define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */ unsigned int version; /* SDHCI spec. version */ @@ -125,6 +131,8 @@ struct sdhci_host { unsigned int clock; /* Current clock (MHz) */ u8 pwr; /* Current voltage */ + bool runtime_suspended; /* Host is runtime suspended */ + struct mmc_request *mrq; /* Current request */ struct mmc_command *cmd; /* Current command */ struct mmc_data *data; /* Current data request */ -- cgit v1.2.2 From b23cf0bd55b0c6b703982446f679e00d6d929524 Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Fri, 23 Sep 2011 14:15:29 +0900 Subject: mmc: core: Add default timeout value for CMD6 EXT_CSD[248] includes the default maximum timeout for CMD6. This field is added at eMMC4.5 Spec. And it can be used for default timeout except for some operations which don't define the timeout (i.e. background operation, sanitize, flush cache) in eMMC4.5 Spec. Signed-off-by: Seungwon Jeon Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 1 + include/linux/mmc/mmc.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 92762865f7e0..2fcd24ccd38c 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -54,6 +54,7 @@ struct mmc_ext_csd { u8 rst_n_function; unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ + unsigned int generic_cmd6_time; /* Units: 10ms */ unsigned int hs_max_dtr; unsigned int sectors; unsigned int card_type; diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index ea558eb44c79..cd63c2dc95cc 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -305,6 +305,7 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_DDR_52_195 238 /* RO */ #define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */ #define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */ /* * EXT_CSD field definitions -- cgit v1.2.2 From bec8726abc72bf30d2743a722aa37cd69e7a0580 Mon Sep 17 00:00:00 2001 From: Girish K S Date: Thu, 13 Oct 2011 12:04:16 +0530 Subject: mmc: core: Add Power Off Notify Feature eMMC 4.5 This patch adds support for the power off notify feature, available in eMMC 4.5 devices. If the host has support for this feature, then the mmc core will notify the device by setting the POWER_OFF_NOTIFICATION byte in the extended csd register with a value of 1 (POWER_ON). For suspend mode short timeout is used, whereas for the normal poweroff long timeout is used. Signed-off-by: Girish K S Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 6 ++++++ include/linux/mmc/host.h | 5 +++++ include/linux/mmc/mmc.h | 6 ++++++ 3 files changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 2fcd24ccd38c..711c3f8bfabd 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -55,6 +55,7 @@ struct mmc_ext_csd { unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ unsigned int generic_cmd6_time; /* Units: 10ms */ + unsigned int power_off_longtime; /* Units: ms */ unsigned int hs_max_dtr; unsigned int sectors; unsigned int card_type; @@ -209,6 +210,11 @@ struct mmc_card { #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512 bytes in */ /* byte mode */ + unsigned int poweroff_notify_state; /* eMMC4.5 notify feature */ +#define MMC_NO_POWER_NOTIFICATION 0 +#define MMC_POWERED_ON 1 +#define MMC_POWEROFF_SHORT 2 +#define MMC_POWEROFF_LONG 3 unsigned int erase_size; /* erase size in sectors */ unsigned int erase_shift; /* if erase unit is power 2 */ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index aed5bc7245f7..cd10208d9a06 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -239,8 +239,13 @@ struct mmc_host { unsigned int caps2; /* More host capabilities */ #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ +#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */ mmc_pm_flag_t pm_caps; /* supported pm features */ + unsigned int power_notify_type; +#define MMC_HOST_PW_NOTIFY_NONE 0 +#define MMC_HOST_PW_NOTIFY_SHORT 1 +#define MMC_HOST_PW_NOTIFY_LONG 2 #ifdef CONFIG_MMC_CLKGATE int clk_requests; /* internal reference counter */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index cd63c2dc95cc..02e9e3de9609 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -270,6 +270,7 @@ struct _mmc_csd { * EXT_CSD fields */ +#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ @@ -346,6 +347,11 @@ struct _mmc_csd { #define EXT_CSD_RST_N_EN_MASK 0x3 #define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */ +#define EXT_CSD_NO_POWER_NOTIFICATION 0 +#define EXT_CSD_POWER_ON 1 +#define EXT_CSD_POWER_OFF_SHORT 2 +#define EXT_CSD_POWER_OFF_LONG 3 + #define EXT_CSD_PWR_CL_8BIT_MASK 0xF0 /* 8 bit PWR CLS */ #define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */ #define EXT_CSD_PWR_CL_8BIT_SHIFT 4 -- cgit v1.2.2 From 4e0a5adf46ee7810af2e1b7e4e8c2a298652618e Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Mon, 17 Oct 2011 19:36:23 +0900 Subject: mmc: dw_mmc: modify DATA register offset In dw_mmc 2.40a spec, Data register's offset is changed. Before we used Data register offset 0x100. but if somebody uses a 2.40a controller, we must use 0x200 for Data register. This patch adds a version-id checking point and uses SDMMC_DATA(x) instead of SDMMC_DATA. It assumes 2.40a is the latest version. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Acked-by: James Hogan Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 6b46819705d1..6dc9b80568a0 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -72,6 +72,8 @@ struct mmc_data; * rate and timeout calculations. * @current_speed: Configured rate of the controller. * @num_slots: Number of slots available. + * @verid: Denote Version ID. + * @data_offset: Set the offset of DATA register according to VERID. * @pdev: Platform device associated with the MMC controller. * @pdata: Platform data associated with the MMC controller. * @slot: Slots sharing this MMC controller. @@ -147,6 +149,8 @@ struct dw_mci { u32 current_speed; u32 num_slots; u32 fifoth_val; + u16 verid; + u16 data_offset; struct platform_device *pdev; struct dw_mci_board *pdata; struct dw_mci_slot *slot[MAX_MCI_SLOTS]; -- cgit v1.2.2 From d9ddd62943ee07a75d0428ffcf52f1a747a28c39 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Fri, 14 Oct 2011 14:15:48 +0900 Subject: mmc: core: mmc sanitize feature support for v4.5 In the v4.5, there's no secure erase & trim support. Instead it supports the sanitize feature. Signed-off-by: Kyungmin Park Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/core.h | 1 + include/linux/mmc/mmc.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 56e5625b6f41..9585835cbc42 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -156,6 +156,7 @@ extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, unsigned int arg); extern int mmc_can_erase(struct mmc_card *card); extern int mmc_can_trim(struct mmc_card *card); +extern int mmc_can_sanitize(struct mmc_card *card); extern int mmc_can_secure_erase_trim(struct mmc_card *card); extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, unsigned int nr); diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 02e9e3de9609..8a05a21fc7c3 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -275,6 +275,7 @@ struct _mmc_csd { #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ +#define EXT_CSD_SANITIZE_START 165 /* W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ #define EXT_CSD_PART_CONFIG 179 /* R/W */ @@ -343,6 +344,7 @@ struct _mmc_csd { #define EXT_CSD_SEC_ER_EN BIT(0) #define EXT_CSD_SEC_BD_BLK_EN BIT(2) #define EXT_CSD_SEC_GB_CL_EN BIT(4) +#define EXT_CSD_SEC_SANITIZE BIT(6) /* v4.5 only */ #define EXT_CSD_RST_N_EN_MASK 0x3 #define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */ -- cgit v1.2.2 From b3bf915308ca2b50f3beec6cc824083870f0f4b5 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Tue, 18 Oct 2011 09:34:04 +0900 Subject: mmc: core: new discard feature support at eMMC v4.5 MMC v4.5 supports the DISCARD feature (CMD38). It's different from trim and there's no check bit. Currently it's only supported at v4.5. Signed-off-by: Kyungmin Park Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 3 +++ include/linux/mmc/core.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 711c3f8bfabd..551378508784 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -80,6 +80,9 @@ struct mmc_ext_csd { u8 raw_sec_feature_support;/* 231 */ u8 raw_trim_mult; /* 232 */ u8 raw_sectors[4]; /* 212 - 4 bytes */ + + unsigned int feature_support; +#define MMC_DISCARD_FEATURE BIT(0) /* CMD38 feature */ }; struct sd_scr { diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 9585835cbc42..e918120235bd 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -146,6 +146,7 @@ extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); #define MMC_ERASE_ARG 0x00000000 #define MMC_SECURE_ERASE_ARG 0x80000000 #define MMC_TRIM_ARG 0x00000001 +#define MMC_DISCARD_ARG 0x00000003 #define MMC_SECURE_TRIM1_ARG 0x80000001 #define MMC_SECURE_TRIM2_ARG 0x80008000 @@ -156,6 +157,7 @@ extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, unsigned int arg); extern int mmc_can_erase(struct mmc_card *card); extern int mmc_can_trim(struct mmc_card *card); +extern int mmc_can_discard(struct mmc_card *card); extern int mmc_can_sanitize(struct mmc_card *card); extern int mmc_can_secure_erase_trim(struct mmc_card *card); extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, -- cgit v1.2.2 From 881d1c25f765938a95def5afe39486ce39f9fc96 Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Fri, 14 Oct 2011 14:03:21 +0900 Subject: mmc: core: Add cache control for eMMC4.5 device This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 2 ++ include/linux/mmc/core.h | 2 ++ include/linux/mmc/host.h | 3 +++ include/linux/mmc/mmc.h | 3 +++ 4 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 551378508784..32492b78aed6 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -51,6 +51,7 @@ struct mmc_ext_csd { u8 rel_sectors; u8 rel_param; u8 part_config; + u8 cache_ctrl; u8 rst_n_function; unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ @@ -67,6 +68,7 @@ struct mmc_ext_csd { bool enhanced_area_en; /* enable bit */ unsigned long long enhanced_area_offset; /* Units: Byte */ unsigned int enhanced_area_size; /* Units: KB */ + unsigned int cache_size; /* Units: KB */ u8 raw_partition_support; /* 160 */ u8 raw_erased_mem_count; /* 181 */ u8 raw_ext_csd_structure; /* 194 */ diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index e918120235bd..67bac374d122 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -177,6 +177,8 @@ extern void mmc_release_host(struct mmc_host *host); extern void mmc_do_release_host(struct mmc_host *host); extern int mmc_try_claim_host(struct mmc_host *host); +extern int mmc_flush_cache(struct mmc_card *); + /** * mmc_claim_host - exclusively claim a host * @host: mmc host to claim diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index cd10208d9a06..16e9338944e8 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -239,6 +239,7 @@ struct mmc_host { unsigned int caps2; /* More host capabilities */ #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ +#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */ #define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */ mmc_pm_flag_t pm_caps; /* supported pm features */ @@ -349,6 +350,8 @@ extern int mmc_power_restore_host(struct mmc_host *host); extern void mmc_detect_change(struct mmc_host *, unsigned long delay); extern void mmc_request_done(struct mmc_host *, struct mmc_request *); +extern int mmc_cache_ctrl(struct mmc_host *, u8); + static inline void mmc_signal_sdio_irq(struct mmc_host *host) { host->ops->enable_sdio_irq(host, 0); diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 8a05a21fc7c3..160e4c5bdae0 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -270,6 +270,8 @@ struct _mmc_csd { * EXT_CSD fields */ +#define EXT_CSD_FLUSH_CACHE 32 /* W */ +#define EXT_CSD_CACHE_CTRL 33 /* R/W */ #define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ @@ -308,6 +310,7 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */ #define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ #define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */ +#define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ /* * EXT_CSD field definitions -- cgit v1.2.2 From eb0d8f135b6730d6d0324a064664d121334290e7 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Tue, 18 Oct 2011 01:26:42 -0400 Subject: mmc: core: support HPI send command HPI command is defined in eMMC4.41. This feature is important for eMMC4.5 devices. Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 4 ++++ include/linux/mmc/core.h | 1 + include/linux/mmc/mmc.h | 3 +++ 3 files changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 32492b78aed6..1684d92a8015 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -69,10 +69,14 @@ struct mmc_ext_csd { unsigned long long enhanced_area_offset; /* Units: Byte */ unsigned int enhanced_area_size; /* Units: KB */ unsigned int cache_size; /* Units: KB */ + bool hpi_en; /* HPI enablebit */ + bool hpi; /* HPI support bit */ + unsigned int hpi_cmd; /* cmd used as HPI */ u8 raw_partition_support; /* 160 */ u8 raw_erased_mem_count; /* 181 */ u8 raw_ext_csd_structure; /* 194 */ u8 raw_card_type; /* 196 */ + u8 out_of_int_time; /* 198 */ u8 raw_s_a_timeout; /* 217 */ u8 raw_hc_erase_gap_size; /* 221 */ u8 raw_erase_timeout_mult; /* 223 */ diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 67bac374d122..174a844a5dda 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -136,6 +136,7 @@ struct mmc_async_req; extern struct mmc_async_req *mmc_start_req(struct mmc_host *, struct mmc_async_req *, int *); +extern int mmc_interrupt_hpi(struct mmc_card *); extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *); extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *); diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 160e4c5bdae0..0e7135697d11 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -276,6 +276,7 @@ struct _mmc_csd { #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ +#define EXT_CSD_HPI_MGMT 161 /* R/W */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ #define EXT_CSD_SANITIZE_START 165 /* W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ @@ -288,6 +289,7 @@ struct _mmc_csd { #define EXT_CSD_REV 192 /* RO */ #define EXT_CSD_STRUCTURE 194 /* RO */ #define EXT_CSD_CARD_TYPE 196 /* RO */ +#define EXT_CSD_OUT_OF_INTERRUPT_TIME 198 /* RO */ #define EXT_CSD_PART_SWITCH_TIME 199 /* RO */ #define EXT_CSD_PWR_CL_52_195 200 /* RO */ #define EXT_CSD_PWR_CL_26_195 201 /* RO */ @@ -311,6 +313,7 @@ struct _mmc_csd { #define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ #define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */ #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ +#define EXT_CSD_HPI_FEATURES 503 /* RO */ /* * EXT_CSD field definitions -- cgit v1.2.2 From b4625dab2c618eb87e177761dda3182b4cfaa604 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Thu, 20 Oct 2011 19:16:32 -0700 Subject: mmc: recognise SDIO cards with SDIO_CCCR_REV 3.00 Table 6-2: CCCR bit Definitions, address 00h. Part E1 SDIO Simplified Specification Version 3.00, Feb. 25, 2011. This patch has been tested with Marvell WLAN device SD8797. Signed-off-by: Bing Zhao Signed-off-by: Chris Ball --- include/linux/mmc/sdio.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h index 2a2e9905a247..e0b1123497b9 100644 --- a/include/linux/mmc/sdio.h +++ b/include/linux/mmc/sdio.h @@ -72,11 +72,13 @@ #define SDIO_CCCR_REV_1_00 0 /* CCCR/FBR Version 1.00 */ #define SDIO_CCCR_REV_1_10 1 /* CCCR/FBR Version 1.10 */ #define SDIO_CCCR_REV_1_20 2 /* CCCR/FBR Version 1.20 */ +#define SDIO_CCCR_REV_3_00 3 /* CCCR/FBR Version 3.00 */ #define SDIO_SDIO_REV_1_00 0 /* SDIO Spec Version 1.00 */ #define SDIO_SDIO_REV_1_10 1 /* SDIO Spec Version 1.10 */ #define SDIO_SDIO_REV_1_20 2 /* SDIO Spec Version 1.20 */ #define SDIO_SDIO_REV_2_00 3 /* SDIO Spec Version 2.00 */ +#define SDIO_SDIO_REV_3_00 4 /* SDIO Spec Version 3.00 */ #define SDIO_CCCR_SD 0x01 -- cgit v1.2.2 From 76c05c8a0d56faf210cb9681786bb3e17cd59793 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 10 Aug 2011 16:31:46 -0500 Subject: gpio: pl061: add DT binding support This adds devicetree binding support to the ARM pl061 driver removing the platform_data dependency. When DT binding is used, the gpio numbering is assigned dynamically. For now, interrupts are not supported with DT until irqdomains learn dynamic irq assignment. Rather than add another case of -1, updating the driver to use NO_IRQ. Signed-off-by: Rob Herring Acked-by: Baruch Siach Signed-off-by: Grant Likely --- include/linux/amba/pl061.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl061.h b/include/linux/amba/pl061.h index 5ddd9ad4b19c..2412af944f1f 100644 --- a/include/linux/amba/pl061.h +++ b/include/linux/amba/pl061.h @@ -7,8 +7,7 @@ struct pl061_platform_data { unsigned gpio_base; /* number of the first IRQ. - * If the IRQ functionality in not desired this must be set to - * (unsigned) -1. + * If the IRQ functionality in not desired this must be set to NO_IRQ. */ unsigned irq_base; -- cgit v1.2.2 From 446066724c3629664e29942a00b0aee0d6b1663a Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 27 Oct 2011 04:38:18 -0400 Subject: jdb/jbd2: factor out common functions from the jbd[2] header files The state bits and the lock functions of jbd and jbd2 are identical. Share them. Signed-off-by: Thomas Gleixner Signed-off-by: "Theodore Ts'o" --- include/linux/jbd.h | 64 +------------------------------------------ include/linux/jbd2.h | 65 +------------------------------------------- include/linux/jbd_common.h | 68 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 70 insertions(+), 127 deletions(-) create mode 100644 include/linux/jbd_common.h (limited to 'include/linux') diff --git a/include/linux/jbd.h b/include/linux/jbd.h index e6a5e34bed4f..c7acdde3243d 100644 --- a/include/linux/jbd.h +++ b/include/linux/jbd.h @@ -244,6 +244,7 @@ typedef struct journal_superblock_s #include #include +#include #define J_ASSERT(assert) BUG_ON(!(assert)) @@ -270,69 +271,6 @@ typedef struct journal_superblock_s #define J_EXPECT_JH(jh, expr, why...) __journal_expect(expr, ## why) #endif -enum jbd_state_bits { - BH_JBD /* Has an attached ext3 journal_head */ - = BH_PrivateStart, - BH_JWrite, /* Being written to log (@@@ DEBUGGING) */ - BH_Freed, /* Has been freed (truncated) */ - BH_Revoked, /* Has been revoked from the log */ - BH_RevokeValid, /* Revoked flag is valid */ - BH_JBDDirty, /* Is dirty but journaled */ - BH_State, /* Pins most journal_head state */ - BH_JournalHead, /* Pins bh->b_private and jh->b_bh */ - BH_Unshadow, /* Dummy bit, for BJ_Shadow wakeup filtering */ -}; - -BUFFER_FNS(JBD, jbd) -BUFFER_FNS(JWrite, jwrite) -BUFFER_FNS(JBDDirty, jbddirty) -TAS_BUFFER_FNS(JBDDirty, jbddirty) -BUFFER_FNS(Revoked, revoked) -TAS_BUFFER_FNS(Revoked, revoked) -BUFFER_FNS(RevokeValid, revokevalid) -TAS_BUFFER_FNS(RevokeValid, revokevalid) -BUFFER_FNS(Freed, freed) - -static inline struct buffer_head *jh2bh(struct journal_head *jh) -{ - return jh->b_bh; -} - -static inline struct journal_head *bh2jh(struct buffer_head *bh) -{ - return bh->b_private; -} - -static inline void jbd_lock_bh_state(struct buffer_head *bh) -{ - bit_spin_lock(BH_State, &bh->b_state); -} - -static inline int jbd_trylock_bh_state(struct buffer_head *bh) -{ - return bit_spin_trylock(BH_State, &bh->b_state); -} - -static inline int jbd_is_locked_bh_state(struct buffer_head *bh) -{ - return bit_spin_is_locked(BH_State, &bh->b_state); -} - -static inline void jbd_unlock_bh_state(struct buffer_head *bh) -{ - bit_spin_unlock(BH_State, &bh->b_state); -} - -static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) -{ - bit_spin_lock(BH_JournalHead, &bh->b_state); -} - -static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) -{ - bit_spin_unlock(BH_JournalHead, &bh->b_state); -} - struct jbd_revoke_table_s; /** diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 3dd101e49d36..2092ea21e469 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -275,6 +275,7 @@ typedef struct journal_superblock_s #include #include +#include #define J_ASSERT(assert) BUG_ON(!(assert)) @@ -302,70 +303,6 @@ typedef struct journal_superblock_s #define J_EXPECT_JH(jh, expr, why...) __journal_expect(expr, ## why) #endif -enum jbd_state_bits { - BH_JBD /* Has an attached ext3 journal_head */ - = BH_PrivateStart, - BH_JWrite, /* Being written to log (@@@ DEBUGGING) */ - BH_Freed, /* Has been freed (truncated) */ - BH_Revoked, /* Has been revoked from the log */ - BH_RevokeValid, /* Revoked flag is valid */ - BH_JBDDirty, /* Is dirty but journaled */ - BH_State, /* Pins most journal_head state */ - BH_JournalHead, /* Pins bh->b_private and jh->b_bh */ - BH_Unshadow, /* Dummy bit, for BJ_Shadow wakeup filtering */ - BH_JBDPrivateStart, /* First bit available for private use by FS */ -}; - -BUFFER_FNS(JBD, jbd) -BUFFER_FNS(JWrite, jwrite) -BUFFER_FNS(JBDDirty, jbddirty) -TAS_BUFFER_FNS(JBDDirty, jbddirty) -BUFFER_FNS(Revoked, revoked) -TAS_BUFFER_FNS(Revoked, revoked) -BUFFER_FNS(RevokeValid, revokevalid) -TAS_BUFFER_FNS(RevokeValid, revokevalid) -BUFFER_FNS(Freed, freed) - -static inline struct buffer_head *jh2bh(struct journal_head *jh) -{ - return jh->b_bh; -} - -static inline struct journal_head *bh2jh(struct buffer_head *bh) -{ - return bh->b_private; -} - -static inline void jbd_lock_bh_state(struct buffer_head *bh) -{ - bit_spin_lock(BH_State, &bh->b_state); -} - -static inline int jbd_trylock_bh_state(struct buffer_head *bh) -{ - return bit_spin_trylock(BH_State, &bh->b_state); -} - -static inline int jbd_is_locked_bh_state(struct buffer_head *bh) -{ - return bit_spin_is_locked(BH_State, &bh->b_state); -} - -static inline void jbd_unlock_bh_state(struct buffer_head *bh) -{ - bit_spin_unlock(BH_State, &bh->b_state); -} - -static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) -{ - bit_spin_lock(BH_JournalHead, &bh->b_state); -} - -static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) -{ - bit_spin_unlock(BH_JournalHead, &bh->b_state); -} - /* Flags in jbd_inode->i_flags */ #define __JI_COMMIT_RUNNING 0 /* Commit of the inode data in progress. We use this flag to protect us from diff --git a/include/linux/jbd_common.h b/include/linux/jbd_common.h new file mode 100644 index 000000000000..6230f8556a4e --- /dev/null +++ b/include/linux/jbd_common.h @@ -0,0 +1,68 @@ +#ifndef _LINUX_JBD_STATE_H +#define _LINUX_JBD_STATE_H + +enum jbd_state_bits { + BH_JBD /* Has an attached ext3 journal_head */ + = BH_PrivateStart, + BH_JWrite, /* Being written to log (@@@ DEBUGGING) */ + BH_Freed, /* Has been freed (truncated) */ + BH_Revoked, /* Has been revoked from the log */ + BH_RevokeValid, /* Revoked flag is valid */ + BH_JBDDirty, /* Is dirty but journaled */ + BH_State, /* Pins most journal_head state */ + BH_JournalHead, /* Pins bh->b_private and jh->b_bh */ + BH_Unshadow, /* Dummy bit, for BJ_Shadow wakeup filtering */ + BH_JBDPrivateStart, /* First bit available for private use by FS */ +}; + +BUFFER_FNS(JBD, jbd) +BUFFER_FNS(JWrite, jwrite) +BUFFER_FNS(JBDDirty, jbddirty) +TAS_BUFFER_FNS(JBDDirty, jbddirty) +BUFFER_FNS(Revoked, revoked) +TAS_BUFFER_FNS(Revoked, revoked) +BUFFER_FNS(RevokeValid, revokevalid) +TAS_BUFFER_FNS(RevokeValid, revokevalid) +BUFFER_FNS(Freed, freed) + +static inline struct buffer_head *jh2bh(struct journal_head *jh) +{ + return jh->b_bh; +} + +static inline struct journal_head *bh2jh(struct buffer_head *bh) +{ + return bh->b_private; +} + +static inline void jbd_lock_bh_state(struct buffer_head *bh) +{ + bit_spin_lock(BH_State, &bh->b_state); +} + +static inline int jbd_trylock_bh_state(struct buffer_head *bh) +{ + return bit_spin_trylock(BH_State, &bh->b_state); +} + +static inline int jbd_is_locked_bh_state(struct buffer_head *bh) +{ + return bit_spin_is_locked(BH_State, &bh->b_state); +} + +static inline void jbd_unlock_bh_state(struct buffer_head *bh) +{ + bit_spin_unlock(BH_State, &bh->b_state); +} + +static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) +{ + bit_spin_lock(BH_JournalHead, &bh->b_state); +} + +static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) +{ + bit_spin_unlock(BH_JournalHead, &bh->b_state); +} + +#endif -- cgit v1.2.2 From 2bf22b39823c1d173dda31111a4eb2ce36daaf39 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Thu, 6 Oct 2011 14:50:33 -0600 Subject: mmc: core: add workaround for controllers with broken multiblock reads Due to hardware bugs, some MMC host controllers don't support multiple-block reads[1]. To resolve, add a new MMC capability flag, MMC_CAP2_NO_MULTI_READ, which can be set by affected host controller drivers. When this capability is set, all reads will be issued one sector at a time. 1. See for example Advisory 2.1.1.128 "MMC: Multiple Block Read Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_ Revision F (October 2010) (SPRZ278F), available from http://focus.ti.com/lit/er/sprz278f/sprz278f.pdf Signed-off-by: Paul Walmsley Cc: Dave Hylands Tested-by: Steve Sakoman Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 16e9338944e8..a3ac9c48e5de 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -241,6 +241,7 @@ struct mmc_host { #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ #define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */ #define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */ +#define MMC_CAP2_NO_MULTI_READ (1 << 3) /* Multiblock reads don't work */ mmc_pm_flag_t pm_caps; /* supported pm features */ unsigned int power_notify_type; -- cgit v1.2.2 From a6029e1f75bb484c1f5bc68b6a8572e4024795bc Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Thu, 13 Oct 2011 00:43:14 +0900 Subject: mmc: fix compile error when CONFIG_BLOCK is not enabled 'DISK_NAME_LEN' is undeclared when CONFIG_BLOCK is disabled; its use was introduced via genhd.h by the general purpose partition patch. To fix, we just add our own MAX_MMC_PART_NAME_LEN macro instead of using DISK_NAME_LEN. Reported-by: Randy Dunlap Signed-off-by: Namjae Jeon Acked-by: Randy Dunlap Acked-by: Andrei Warkentin Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 1684d92a8015..415f2db414e1 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -12,7 +12,6 @@ #include #include -#include struct mmc_cid { unsigned int manfid; @@ -175,6 +174,7 @@ struct sdio_func_tuple; #define MMC_NUM_BOOT_PARTITION 2 #define MMC_NUM_GP_PARTITION 4 #define MMC_NUM_PHY_PARTITION 6 +#define MAX_MMC_PART_NAME_LEN 20 /* * MMC Physical partitions @@ -182,7 +182,7 @@ struct sdio_func_tuple; struct mmc_part { unsigned int size; /* partition size (in bytes) */ unsigned int part_cfg; /* partition type */ - char name[DISK_NAME_LEN]; + char name[MAX_MMC_PART_NAME_LEN]; bool force_ro; /* to make boot parts RO by default */ }; -- cgit v1.2.2 From e0c8ea1a69410ef44043646938a6a4175f5307e4 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 25 Oct 2011 10:02:53 -0500 Subject: Fix build break when freezer not configured fs/cifs/transport.c: In function 'wait_for_response': fs/cifs/transport.c:328: error: implicit declaration of function 'wait_event_freezekillable' Caused by commit f06ac72e9291 ("cifs, freezer: add wait_event_freezekillable and have cifs use it"). In this config, CONFIG_FREEZER is not set. Reviewed-by: Shirish Pargaonkar CC: Jeff Layton Signed-off-by: Steve French --- include/linux/freezer.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index a1555618801d..5989883d7763 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -203,6 +203,9 @@ static inline void set_freezable_with_signal(void) {} #define wait_event_freezable_timeout(wq, condition, timeout) \ wait_event_interruptible_timeout(wq, condition, timeout) +#define wait_event_freezekillable(wq, condition) \ + wait_event_killable(wq, condition) + #endif /* !CONFIG_FREEZER */ #endif /* FREEZER_H_INCLUDED */ -- cgit v1.2.2 From 2854aedd05255f3142167f4ac715ab67ee569004 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 28 Sep 2011 16:47:06 +0900 Subject: sh: pfc: Remove unused gpio_in_use member Remove unused member gpio_in_use from struct pinmux_info. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- include/linux/sh_pfc.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 30cae70874f4..12f351991701 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -87,7 +87,6 @@ struct pinmux_info { pinmux_enum_t *gpio_data; unsigned int gpio_data_size; - unsigned long *gpio_in_use; struct gpio_chip chip; }; -- cgit v1.2.2 From ad2a8e7ea4128af984a98537b1b9484722b6b4bb Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 28 Sep 2011 16:50:58 +0900 Subject: sh: pfc: Add GPIO IRQ support Add GPIO IRQ support to the shared PFC code in drivers/sh/pfc.c The enums pointed out by a certain GPIO will be matched against a table for IRQ to enum mappings. Only the shared PFC code is updated by this patch. SoC specific changes are also needed to allow platforms to make use of this feature. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- include/linux/sh_pfc.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 12f351991701..bc8c9208f7e2 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -61,6 +61,14 @@ struct pinmux_data_reg { .reg = r, .reg_width = r_width, \ .enum_ids = (pinmux_enum_t [r_width]) \ +struct pinmux_irq { + int irq; + pinmux_enum_t *enum_ids; +}; + +#define PINMUX_IRQ(irq_nr, ids...) \ + { .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } } \ + struct pinmux_range { pinmux_enum_t begin; pinmux_enum_t end; @@ -87,6 +95,9 @@ struct pinmux_info { pinmux_enum_t *gpio_data; unsigned int gpio_data_size; + struct pinmux_irq *gpio_irq; + unsigned int gpio_irq_size; + struct gpio_chip chip; }; -- cgit v1.2.2 From 8522ca5818652c4da6808c66a307abce75462212 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sun, 23 Oct 2011 23:13:31 +0530 Subject: vfs: add hex format for MAY_* flag values We are going to add more flags and having them in hex format make it simpler Acked-by: J. Bruce Fields Acked-by: David Howells Signed-off-by: Aneesh Kumar K.V Signed-off-by: Christoph Hellwig --- include/linux/fs.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 277f497923a2..c1884e974ff4 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -58,14 +58,15 @@ struct inodes_stat_t { #define NR_FILE 8192 /* this can well be larger on a larger system */ -#define MAY_EXEC 1 -#define MAY_WRITE 2 -#define MAY_READ 4 -#define MAY_APPEND 8 -#define MAY_ACCESS 16 -#define MAY_OPEN 32 -#define MAY_CHDIR 64 -#define MAY_NOT_BLOCK 128 /* called from RCU mode, don't block */ +#define MAY_EXEC 0x00000001 +#define MAY_WRITE 0x00000002 +#define MAY_READ 0x00000004 +#define MAY_APPEND 0x00000008 +#define MAY_ACCESS 0x00000010 +#define MAY_OPEN 0x00000020 +#define MAY_CHDIR 0x00000040 +/* called from RCU mode, don't block */ +#define MAY_NOT_BLOCK 0x00000080 /* * flags in file.f_mode. Note that FMODE_READ and FMODE_WRITE must correspond -- cgit v1.2.2 From ef3d0fd27e90f67e35da516dafc1482c82939a60 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 15 Sep 2011 16:06:48 -0700 Subject: vfs: do (nearly) lockless generic_file_llseek The i_mutex lock use of generic _file_llseek hurts. Independent processes accessing the same file synchronize over a single lock, even though they have no need for synchronization at all. Under high utilization this can cause llseek to scale very poorly on larger systems. This patch does some rethinking of the llseek locking model: First the 64bit f_pos is not necessarily atomic without locks on 32bit systems. This can already cause races with read() today. This was discussed on linux-kernel in the past and deemed acceptable. The patch does not change that. Let's look at the different seek variants: SEEK_SET: Doesn't really need any locking. If there's a race one writer wins, the other loses. For 32bit the non atomic update races against read() stay the same. Without a lock they can also happen against write() now. The read() race was deemed acceptable in past discussions, and I think if it's ok for read it's ok for write too. => Don't need a lock. SEEK_END: This behaves like SEEK_SET plus it reads the maximum size too. Reading the maximum size would have the 32bit atomic problem. But luckily we already have a way to read the maximum size without locking (i_size_read), so we can just use that instead. Without i_mutex there is no synchronization with write() anymore, however since the write() update is atomic on 64bit it just behaves like another racy SEEK_SET. On non atomic 32bit it's the same as SEEK_SET. => Don't need a lock, but need to use i_size_read() SEEK_CUR: This has a read-modify-write race window on the same file. One could argue that any application doing unsynchronized seeks on the same file is already broken. But for the sake of not adding a regression here I'm using the file->f_lock to synchronize this. Using this lock is much better than the inode mutex because it doesn't synchronize between processes. => So still need a lock, but can use a f_lock. This patch implements this new scheme in generic_file_llseek. I dropped generic_file_llseek_unlocked and changed all callers. Signed-off-by: Andi Kleen Signed-off-by: Christoph Hellwig --- include/linux/fs.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index c1884e974ff4..db85196f6308 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -964,7 +964,12 @@ struct file { #define f_dentry f_path.dentry #define f_vfsmnt f_path.mnt const struct file_operations *f_op; - spinlock_t f_lock; /* f_ep_links, f_flags, no IRQ */ + + /* + * Protects f_ep_links, f_flags, f_pos vs i_size in lseek SEEK_CUR. + * Must not be taken from IRQ context. + */ + spinlock_t f_lock; #ifdef CONFIG_SMP int f_sb_list_cpu; #endif @@ -2398,8 +2403,6 @@ file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); extern loff_t noop_llseek(struct file *file, loff_t offset, int origin); extern loff_t no_llseek(struct file *file, loff_t offset, int origin); extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin); -extern loff_t generic_file_llseek_unlocked(struct file *file, loff_t offset, - int origin); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); -- cgit v1.2.2 From 5760495a872d63a182962680a13c2af29235237c Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 15 Sep 2011 16:06:50 -0700 Subject: vfs: add generic_file_llseek_size Add a generic_file_llseek variant to the VFS that allows passing in the maximum file size of the file system, instead of always using maxbytes from the superblock. This can be used to eliminate some cut'n'paste seek code in ext4. Signed-off-by: Andi Kleen Signed-off-by: Christoph Hellwig --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index db85196f6308..d055cc7d7240 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2403,6 +2403,8 @@ file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); extern loff_t noop_llseek(struct file *file, loff_t offset, int origin); extern loff_t no_llseek(struct file *file, loff_t offset, int origin); extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin); +extern loff_t generic_file_llseek_size(struct file *file, loff_t offset, + int origin, loff_t maxsize); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); -- cgit v1.2.2 From 97285b78174423e5576b2e06aa45f64df009da5b Mon Sep 17 00:00:00 2001 From: Marcel Apfelbaum Date: Mon, 24 Oct 2011 11:02:34 +0200 Subject: mlx4_core: Add extended port capabilities support An Extended Port Info packet is sent to each hw port during HCA init. If it returns without error, we assume the port supports extended port capabilities. Signed-off-by: Marcel Apfelbaum Reviewed-by: Jack Morgenstein Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 53ef894bfa05..ce9ef491addf 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -82,6 +82,12 @@ enum { MLX4_DEV_CAP_FLAG_COUNTERS = 1LL << 48 }; +#define MLX4_ATTR_EXTENDED_PORT_INFO cpu_to_be16(0xff90) + +enum { + MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO = 1 << 0 +}; + enum { MLX4_BMME_FLAG_LOCAL_INV = 1 << 6, MLX4_BMME_FLAG_REMOTE_INV = 1 << 7, @@ -276,6 +282,7 @@ struct mlx4_caps { u32 port_mask; enum mlx4_port_type possible_type[MLX4_MAX_PORTS + 1]; u32 max_counters; + u8 ext_port_cap[MLX4_MAX_PORTS + 1]; }; struct mlx4_buf_list { -- cgit v1.2.2 From 5c825ee202d0891269e29197d5b21f8e2be3498a Mon Sep 17 00:00:00 2001 From: Andy Green Date: Mon, 30 May 2011 07:43:05 -0700 Subject: I2C: OMAP: add rev to omap i2c platform data We need to pass the I2C IP revision from the hwmod class up into the OMAP I2C driver, which does not have direct access to it. This adds a member to the platform data the OMAP I2C driver does use already to hold the I2C IP revision. Cc: patches@linaro.org Reported-by: Peter Maydell Signed-off-by: Andy Green Signed-off-by: Tony Lindgren Acked-by: Ben Dooks Signed-off-by: Kevin Hilman --- include/linux/i2c-omap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 0aa0cbd676f7..55eac259a451 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -32,6 +32,7 @@ struct omap_i2c_bus_platform_data { u32 clkrate; + u32 rev; void (*set_mpu_wkup_lat)(struct device *dev, long set); int (*device_enable) (struct platform_device *pdev); int (*device_shutdown) (struct platform_device *pdev); -- cgit v1.2.2 From c23600a688dc71f4312f83cb0f23a736e1578a5e Mon Sep 17 00:00:00 2001 From: Andy Green Date: Mon, 30 May 2011 07:43:08 -0700 Subject: I2C: OMAP1/OMAP2+: add flags field to omap i2c platform data OMAP I2C driver can access the configuration flags through its platform data. Cc: patches@linaro.org Reported-by: Peter Maydell Signed-off-by: Andy Green Signed-off-by: Tony Lindgren Acked-by: Ben Dooks Signed-off-by: Kevin Hilman --- include/linux/i2c-omap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 55eac259a451..56a9924c31ca 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -33,6 +33,7 @@ struct omap_i2c_bus_platform_data { u32 clkrate; u32 rev; + u32 flags; void (*set_mpu_wkup_lat)(struct device *dev, long set); int (*device_enable) (struct platform_device *pdev); int (*device_shutdown) (struct platform_device *pdev); -- cgit v1.2.2 From c9c7ae40660f5983854f73b6ae65f208e9a15082 Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Thu, 4 Aug 2011 08:01:56 -0700 Subject: I2C: OMAP: remove unused function pointers from pdata Now that this driver is using runtime PM, there is no longer a need for the idle/enable/shutdown function pointers in pdata. Signed-off-by: Kevin Hilman --- include/linux/i2c-omap.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 56a9924c31ca..92a0dc75bc74 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -35,9 +35,6 @@ struct omap_i2c_bus_platform_data { u32 rev; u32 flags; void (*set_mpu_wkup_lat)(struct device *dev, long set); - int (*device_enable) (struct platform_device *pdev); - int (*device_shutdown) (struct platform_device *pdev); - int (*device_idle) (struct platform_device *pdev); }; #endif -- cgit v1.2.2 From e51130c0f5e5ca2f5b669ca6759e0ae1aa197b63 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Thu, 6 Oct 2011 15:40:44 +0300 Subject: of: include errno.h When compiling ath6kl for beagleboard (omap2plus_defconfig plus CONFIG_ATH6KL, CONFIG_OF disable) with current linux-next compilation fails: include/linux/of.h:269: error: 'ENOSYS' undeclared (first use in this function) include/linux/of.h:276: error: 'ENOSYS' undeclared (first use in this function) include/linux/of.h:289: error: 'ENOSYS' undeclared (first use in this function) Fix this by including errno.h from of.h. Signed-off-by: Kalle Valo Acked-by: Geert Uytterhoeven Signed-off-by: Grant Likely --- include/linux/of.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 92c40a142243..5dbe263462a9 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -17,6 +17,7 @@ */ #include #include +#include #include #include #include -- cgit v1.2.2 From ed5f886d16369fed5a69d96b8e85777c47206de1 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 27 Oct 2011 11:07:28 +0200 Subject: dt: add empty of_alias_get_id() for non-dt builds Add function of_alias_get_id() reporting -ENOSYS for non-dt builds, so that drivers migrating to dt can save some '#ifdef CONFIG_OF'. Signed-off-by: Nicolas Ferre Acked-by: Rob Herring Signed-off-by: Grant Likely --- include/linux/of.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 5dbe263462a9..758899d4902b 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -303,6 +303,11 @@ static inline struct device_node *of_parse_phandle(struct device_node *np, return NULL; } +static inline int of_alias_get_id(struct device_node *np, const char *stem) +{ + return -ENOSYS; +} + #define of_match_ptr(_ptr) NULL #define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ -- cgit v1.2.2 From 6cdbb0effc2f511ced23e46f2117e4b31d3d4a50 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 29 Oct 2011 08:24:18 -0400 Subject: fs: optimize out 16 bytes worth of padding in struct inode Rearrange the fields in struct inode so that on an x86_64 system, fields that require 8-byte alignment don't end up causing 4-byte holes in the structure. It reduces the size of struct inode from 568 bytes to 552 bytes. Also move the fields protected by i_lock (i_blocks, i_bytes, and i_size) into the same cache line as i_lock. Signed-off-by: "Theodore Ts'o" --- include/linux/fs.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 178cdb4f1d4a..fbda9a662f57 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -771,12 +771,13 @@ struct inode { unsigned long i_ino; unsigned int i_nlink; dev_t i_rdev; - loff_t i_size; struct timespec i_atime; struct timespec i_mtime; struct timespec i_ctime; - unsigned int i_blkbits; + spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ + unsigned short i_bytes; blkcnt_t i_blocks; + loff_t i_size; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; @@ -784,7 +785,6 @@ struct inode { /* Misc */ unsigned long i_state; - spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ struct mutex i_mutex; unsigned long dirtied_when; /* jiffies of first dirtying */ @@ -798,9 +798,10 @@ struct inode { struct rcu_head i_rcu; }; atomic_t i_count; + unsigned int i_blkbits; u64 i_version; - unsigned short i_bytes; atomic_t i_dio_count; + atomic_t i_writecount; const struct file_operations *i_fop; /* former ->i_op->default_file_ops */ struct file_lock *i_flock; struct address_space i_data; @@ -824,7 +825,6 @@ struct inode { #ifdef CONFIG_IMA atomic_t i_readcount; /* struct files open RO */ #endif - atomic_t i_writecount; void *i_private; /* fs or device private pointer */ }; -- cgit v1.2.2 From 6a32e4f9dd9219261f8856f817e6655114cfec2f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 29 Oct 2011 06:13:39 +0000 Subject: vlan: allow nested vlan_do_receive() commit 2425717b27eb (net: allow vlan traffic to be received under bond) broke ARP processing on vlan on top of bonding. +-------+ eth0 --| bond0 |---bond0.103 eth1 --| | +-------+ 52870.115435: skb_gro_reset_offset <-napi_gro_receive 52870.115435: dev_gro_receive <-napi_gro_receive 52870.115435: napi_skb_finish <-napi_gro_receive 52870.115435: netif_receive_skb <-napi_skb_finish 52870.115435: get_rps_cpu <-netif_receive_skb 52870.115435: __netif_receive_skb <-netif_receive_skb 52870.115436: vlan_do_receive <-__netif_receive_skb 52870.115436: bond_handle_frame <-__netif_receive_skb 52870.115436: vlan_do_receive <-__netif_receive_skb 52870.115436: arp_rcv <-__netif_receive_skb 52870.115436: kfree_skb <-arp_rcv Packet is dropped in arp_rcv() because its pkt_type was set to PACKET_OTHERHOST in the first vlan_do_receive() call, since no eth0.103 exists. We really need to change pkt_type only if no more rx_handler is about to be called for the packet. Signed-off-by: Eric Dumazet Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/if_vlan.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 44da4822bcab..12d5543b14f2 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -106,7 +106,7 @@ extern struct net_device *__vlan_find_dev_deep(struct net_device *real_dev, extern struct net_device *vlan_dev_real_dev(const struct net_device *dev); extern u16 vlan_dev_vlan_id(const struct net_device *dev); -extern bool vlan_do_receive(struct sk_buff **skb); +extern bool vlan_do_receive(struct sk_buff **skb, bool last_handler); extern struct sk_buff *vlan_untag(struct sk_buff *skb); #else @@ -128,9 +128,9 @@ static inline u16 vlan_dev_vlan_id(const struct net_device *dev) return 0; } -static inline bool vlan_do_receive(struct sk_buff **skb) +static inline bool vlan_do_receive(struct sk_buff **skb, bool last_handler) { - if ((*skb)->vlan_tci & VLAN_VID_MASK) + if (((*skb)->vlan_tci & VLAN_VID_MASK) && last_handler) (*skb)->pkt_type = PACKET_OTHERHOST; return false; } -- cgit v1.2.2 From 7697e71f72b45a1bd0abe70918c383100fcc8514 Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Tue, 18 Oct 2011 12:27:15 +0200 Subject: KVM: s390: implement sigp external call Implement sigp external call, which might be required for guests that issue an external call instead of an emergency signal for IPI. This fixes an issue with "KVM: unknown SIGP: 0x02" when booting such an SMP guest. Signed-off-by: Christian Ehrhardt Signed-off-by: Christian Borntraeger Signed-off-by: Marcelo Tosatti --- include/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 68840544006d..f47fcd30273d 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -371,6 +371,7 @@ struct kvm_s390_psw { #define KVM_S390_INT_VIRTIO 0xffff2603u #define KVM_S390_INT_SERVICE 0xffff2401u #define KVM_S390_INT_EMERGENCY 0xffff1201u +#define KVM_S390_INT_EXTERNAL_CALL 0xffff1202u struct kvm_s390_interrupt { __u32 type; -- cgit v1.2.2 From 06a67848c6681a73e621e47c056490d51a07289f Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 30 Oct 2011 13:47:25 +0100 Subject: i2c: Functions for byte-swapped smbus_write/read_word_data Reimplemented at least 17 times discounting error mangling cases where it could be used. Signed-off-by: Jonathan Cameron Signed-off-by: Jean Delvare --- include/linux/i2c.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index a6c652ef516d..38a21c3edd2c 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -34,6 +34,7 @@ #include /* for completion */ #include #include /* for struct device_node */ +#include /* for swab16 */ extern struct bus_type i2c_bus_type; extern struct device_type i2c_adapter_type; @@ -88,6 +89,22 @@ extern s32 i2c_smbus_read_word_data(const struct i2c_client *client, u8 command); extern s32 i2c_smbus_write_word_data(const struct i2c_client *client, u8 command, u16 value); + +static inline s32 +i2c_smbus_read_word_swapped(const struct i2c_client *client, u8 command) +{ + s32 value = i2c_smbus_read_word_data(client, command); + + return (value < 0) ? value : swab16(value); +} + +static inline s32 +i2c_smbus_write_word_swapped(const struct i2c_client *client, + u8 command, u16 value) +{ + return i2c_smbus_write_word_data(client, command, swab16(value)); +} + /* Returns the number of read bytes */ extern s32 i2c_smbus_read_block_data(const struct i2c_client *client, u8 command, u8 *values); -- cgit v1.2.2 From 3d214faea6e4f9b6018bf8589f4b245126349c0a Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Sun, 30 Oct 2011 15:16:36 +0100 Subject: [S390] kdump: Add KEXEC_CRASH_CONTROL_MEMORY_LIMIT On s390 there is a different KEXEC_CONTROL_MEMORY_LIMIT for the normal and the kdump kexec case. Therefore this patch introduces a new macro KEXEC_CRASH_CONTROL_MEMORY_LIMIT. This is set to KEXEC_CONTROL_MEMORY_LIMIT for all architectures that do not define KEXEC_CRASH_CONTROL_MEMORY_LIMIT. Acked-by: Vivek Goyal Acked-by: Andrew Morton Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- include/linux/kexec.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index c2478a342cd7..07d9aba75562 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -33,6 +33,10 @@ #error KEXEC_ARCH not defined #endif +#ifndef KEXEC_CRASH_CONTROL_MEMORY_LIMIT +#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT KEXEC_CONTROL_MEMORY_LIMIT +#endif + #define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4) #define KEXEC_CORE_NOTE_NAME "CORE" #define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4) -- cgit v1.2.2 From d3bf37955d46718ee1a7f1fc69f953d2328ba7c2 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Sun, 30 Oct 2011 15:16:37 +0100 Subject: [S390] kdump: Add size to elfcorehdr kernel parameter Currently only the address of the pre-allocated ELF header is passed with the elfcorehdr= kernel parameter. In order to reserve memory for the header in the 2nd kernel also the size is required. Current kdump architecture backends use different methods to do that, e.g. x86 uses the memmap= kernel parameter. On s390 there is no easy way to transfer this information. Therefore the elfcorehdr kernel parameter is extended to also pass the size. This now can also be used as standard mechanism by all future kdump architecture backends. The syntax of the kernel parameter is extended as follows: elfcorehdr=[size[KMG]@]offset[KMG] This change is backward compatible because elfcorehdr=size is still allowed. Acked-by: Vivek Goyal Acked-by: Andrew Morton Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- include/linux/crash_dump.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index 74054074e876..5c4abce94ad1 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -10,6 +10,7 @@ #define ELFCORE_ADDR_ERR (-2ULL) extern unsigned long long elfcorehdr_addr; +extern unsigned long long elfcorehdr_size; extern ssize_t copy_oldmem_page(unsigned long, char *, size_t, unsigned long, int); -- cgit v1.2.2 From 558df7209e7997275f6b8ad37737494cf2da1512 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Sun, 30 Oct 2011 15:16:43 +0100 Subject: [S390] kdump: Add infrastructure for unmapping crashkernel memory This patch introduces a mechanism that allows architecture backends to remove page tables for the crashkernel memory. This can protect the loaded kdump kernel from being overwritten by broken kernel code. Two new functions crash_map_reserved_pages() and crash_unmap_reserved_pages() are added that can be implemented by architecture code. The crash_map_reserved_pages() function is called before and crash_unmap_reserved_pages() after the crashkernel segments are loaded. The functions are also called in crash_shrink_memory() to create/remove page tables when the crashkernel memory size is reduced. To support architectures that have large pages this patch also introduces a new define KEXEC_CRASH_MEM_ALIGN. The crashkernel start and size must always be aligned with KEXEC_CRASH_MEM_ALIGN. Cc: Andrew Morton Acked-by: Vivek Goyal Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- include/linux/kexec.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 07d9aba75562..fe45136b32cc 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -37,6 +37,10 @@ #define KEXEC_CRASH_CONTROL_MEMORY_LIMIT KEXEC_CONTROL_MEMORY_LIMIT #endif +#ifndef KEXEC_CRASH_MEM_ALIGN +#define KEXEC_CRASH_MEM_ALIGN PAGE_SIZE +#endif + #define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4) #define KEXEC_CORE_NOTE_NAME "CORE" #define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4) @@ -133,6 +137,8 @@ extern void crash_kexec(struct pt_regs *); int kexec_should_crash(struct task_struct *); void crash_save_cpu(struct pt_regs *regs, int cpu); void crash_save_vmcoreinfo(void); +void crash_map_reserved_pages(void); +void crash_unmap_reserved_pages(void); void arch_crash_save_vmcoreinfo(void); void vmcoreinfo_append_str(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); -- cgit v1.2.2 From 20b40a794baf3b4b0320c0a77ce944d5d1a01f25 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Sun, 30 Oct 2011 15:16:47 +0100 Subject: [S390] signal race with restarting system calls For a ERESTARTNOHAND/ERESTARTSYS/ERESTARTNOINTR restarting system call do_signal will prepare the restart of the system call with a rewind of the PSW before calling get_signal_to_deliver (where the debugger might take control). For A ERESTART_RESTARTBLOCK restarting system call do_signal will set -EINTR as return code. There are two issues with this approach: 1) strace never sees ERESTARTNOHAND, ERESTARTSYS, ERESTARTNOINTR or ERESTART_RESTARTBLOCK as the rewinding already took place or the return code has been changed to -EINTR 2) if get_signal_to_deliver does not return with a signal to deliver the restart via the repeat of the svc instruction is left in place. This opens a race if another signal is made pending before the system call instruction can be reexecuted. The original system call will be restarted even if the second signal would have ended the system call with -EINTR. These two issues can be solved by dropping the early rewind of the system call before get_signal_to_deliver has been called and by using the TIF_RESTART_SVC magic to do the restart if no signal has to be delivered. The only situation where the system call restart via the repeat of the svc instruction is appropriate is when a SA_RESTART signal is delivered to user space. Unfortunately this breaks inferior calls by the debugger again. The system call number and the length of the system call instruction is lost over the inferior call and user space will see ERESTARTNOHAND/ ERESTARTSYS/ERESTARTNOINTR/ERESTART_RESTARTBLOCK. To correct this a new ptrace interface is added to save/restore the system call number and system call instruction length. Signed-off-by: Martin Schwidefsky --- include/linux/elf.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/elf.h b/include/linux/elf.h index 110821cb6ea5..31f0508d7da7 100644 --- a/include/linux/elf.h +++ b/include/linux/elf.h @@ -395,6 +395,7 @@ typedef struct elf64_shdr { #define NT_S390_CTRS 0x304 /* s390 control registers */ #define NT_S390_PREFIX 0x305 /* s390 prefix register */ #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ +#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ -- cgit v1.2.2 From 0e175a1835ffc979e55787774e58ec79e41957d7 Mon Sep 17 00:00:00 2001 From: Curt Wohlgemuth Date: Fri, 7 Oct 2011 21:54:10 -0600 Subject: writeback: Add a 'reason' to wb_writeback_work This creates a new 'reason' field in a wb_writeback_work structure, which unambiguously identifies who initiates writeback activity. A 'wb_reason' enumeration has been added to writeback.h, to enumerate the possible reasons. The 'writeback_work_class' and tracepoint event class and 'writeback_queue_io' tracepoints are updated to include the symbolic 'reason' in all trace events. And the 'writeback_inodes_sbXXX' family of routines has had a wb_stats parameter added to them, so callers can specify why writeback is being started. Acked-by: Jan Kara Signed-off-by: Curt Wohlgemuth Signed-off-by: Wu Fengguang --- include/linux/backing-dev.h | 3 ++- include/linux/writeback.h | 32 ++++++++++++++++++++++++++------ 2 files changed, 28 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index c3b92010d894..b1038bd686ac 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -118,7 +118,8 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); void bdi_unregister(struct backing_dev_info *bdi); int bdi_setup_and_register(struct backing_dev_info *, char *, unsigned int); -void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages); +void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages, + enum wb_reason reason); void bdi_start_background_writeback(struct backing_dev_info *bdi); int bdi_writeback_thread(void *data); int bdi_has_dirty_io(struct backing_dev_info *bdi); diff --git a/include/linux/writeback.h b/include/linux/writeback.h index ddb4652cb337..a378c295851f 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -38,6 +38,23 @@ enum writeback_sync_modes { WB_SYNC_ALL, /* Wait on every mapping */ }; +/* + * why some writeback work was initiated + */ +enum wb_reason { + WB_REASON_BACKGROUND, + WB_REASON_TRY_TO_FREE_PAGES, + WB_REASON_SYNC, + WB_REASON_PERIODIC, + WB_REASON_LAPTOP_TIMER, + WB_REASON_FREE_MORE_MEM, + WB_REASON_FS_FREE_SPACE, + WB_REASON_FORKER_THREAD, + + WB_REASON_MAX, +}; +extern const char *wb_reason_name[]; + /* * A control structure which tells the writeback code what to do. These are * always on the stack, and hence need no locking. They are always initialised @@ -69,14 +86,17 @@ struct writeback_control { */ struct bdi_writeback; int inode_wait(void *); -void writeback_inodes_sb(struct super_block *); -void writeback_inodes_sb_nr(struct super_block *, unsigned long nr); -int writeback_inodes_sb_if_idle(struct super_block *); -int writeback_inodes_sb_nr_if_idle(struct super_block *, unsigned long nr); +void writeback_inodes_sb(struct super_block *, enum wb_reason reason); +void writeback_inodes_sb_nr(struct super_block *, unsigned long nr, + enum wb_reason reason); +int writeback_inodes_sb_if_idle(struct super_block *, enum wb_reason reason); +int writeback_inodes_sb_nr_if_idle(struct super_block *, unsigned long nr, + enum wb_reason reason); void sync_inodes_sb(struct super_block *); -long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages); +long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages, + enum wb_reason reason); long wb_do_writeback(struct bdi_writeback *wb, int force_wait); -void wakeup_flusher_threads(long nr_pages); +void wakeup_flusher_threads(long nr_pages, enum wb_reason reason); /* writeback.h requires fs.h; it, too, is not included from here. */ static inline void wait_on_inode(struct inode *inode) -- cgit v1.2.2 From 99a700bcc75429ba84a672d04f0b650dcc5b3042 Mon Sep 17 00:00:00 2001 From: "Robin H. Johnson" Date: Mon, 24 Oct 2011 22:30:08 +0000 Subject: [SCSI] mv_sas: OCZ RevoDrive3 & zDrive R4 support In the OCZ RevoDrive3/zDrive R4 series, the "OCZ SuperScale Storage Controller" with "Virtualized Controller Architecture 2.0" really seems to be a Marvell 88SE9485 part, with OCZ firmware/BIOS. Developed and tested on OCZ RevoDrive3 120GB [PCI 1b85:1021] Should work on: - OCZ RevoDrive3 (2x SandForce 2281) - OCZ RevoDrive3 X2 (4x SandForce 2281) - OCZ zDrive R4 CM84 (4x SandForce 2281) - OCZ zDrive R4 CM88 (8x SandForce 2281) - OCZ zDrive R4 RM84 (4x SandForce 2582) - OCZ zDrive R4 RM88 (8x SandForce 2582) All of this because a friend recently bought a OCZ RevoDrive3 and was bitten by the lack of Linux support. Notes from testing: ------------------- - SMART works. - VPD Device Identification is "OCZ-REVODRIVE3" - Thin provisioning/TRIM seems to be implemented as WRITE SAME UNMAP, with deterministic (non-zero) read after TRIM, but I'm not sure if it works 100% in my testing. - Some of the tuning in the firmware seems to ensure much better performance when in a RAID0 setup than using the two devices seperately. I have not tested booting from the SSD, because all of this was developed and tested remotely from the actual hardware. Signed-off-by: Robin H. Johnson Thanks-To: Gordon Pritchard Acked-by: Xiangliang Yu Signed-off-by: James Bottomley --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 1679ff6931f9..3fdf251389de 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2873,3 +2873,5 @@ #define PCI_VENDOR_ID_XEN 0x5853 #define PCI_DEVICE_ID_XEN_PLATFORM 0x0001 + +#define PCI_VENDOR_ID_OCZ 0x1b85 -- cgit v1.2.2 From c71a54b0820179e53483d5220cdef1a0df8d5bd1 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Tue, 20 Sep 2011 15:13:50 -0500 Subject: of/irq: introduce of_irq_init of_irq_init will scan the devicetree for matching interrupt controller nodes. Then it calls an initialization function for each found controller in the proper order with parent nodes initialized before child nodes. Based on initial pseudo code from Grant Likely. Changes in v4: - Drop unnecessary empty list check - Be more verbose on errors - Simplify "if (!desc) WARN_ON(1)" to "if (WARN_ON(!desc))" Changes in v3: - add missing kfree's found by Jamie - Implement Grant's comments to simplify the init loop - fix function comments Changes in v2: - Complete re-write of list searching code from Grant Likely Signed-off-by: Rob Herring Reviewed-by: Jamie Iles Tested-by: Thomas Abraham Acked-by: Grant Likely --- include/linux/of_irq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index cd2e61ce4e83..d0307eed20c9 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -33,6 +33,8 @@ struct of_irq { u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ }; +typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); + /* * Workarounds only applied to 32bit powermac machines */ @@ -73,6 +75,7 @@ extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); extern struct device_node *of_irq_find_parent(struct device_node *child); +extern void of_irq_init(const struct of_device_id *matches); #endif /* CONFIG_OF_IRQ */ #endif /* CONFIG_OF */ -- cgit v1.2.2 From 6d274309d0e64bdbdb6c50945ca2964596e8fa5a Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 30 Sep 2011 10:48:38 -0500 Subject: irq: support domains with non-zero hwirq base Interrupt controllers can have non-zero starting value for h/w irq numbers. Adding support in irq_domain allows the domain hwirq numbering to match the interrupt controllers' numbering. As this makes looping over irqs for a domain more complicated, add loop iterators to iterate over all hwirqs and irqs for a domain. Signed-off-by: Rob Herring Reviewed-by: Jamie Iles Tested-by: Thomas Abraham Acked-by: Grant Likely Acked-by: Thomas Gleixner --- include/linux/irqdomain.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 3ad553e8eae2..99834e581b9e 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -47,6 +47,7 @@ struct irq_domain_ops { * of the irq_domain is responsible for allocating the array of * irq_desc structures. * @nr_irq: Number of irqs managed by the irq domain + * @hwirq_base: Starting number for hwirqs managed by the irq domain * @ops: pointer to irq_domain methods * @priv: private data pointer for use by owner. Not touched by irq_domain * core code. @@ -57,6 +58,7 @@ struct irq_domain { struct list_head list; unsigned int irq_base; unsigned int nr_irq; + unsigned int hwirq_base; const struct irq_domain_ops *ops; void *priv; struct device_node *of_node; @@ -72,9 +74,21 @@ struct irq_domain { static inline unsigned int irq_domain_to_irq(struct irq_domain *d, unsigned long hwirq) { - return d->ops->to_irq ? d->ops->to_irq(d, hwirq) : d->irq_base + hwirq; + if (d->ops->to_irq) + return d->ops->to_irq(d, hwirq); + if (WARN_ON(hwirq < d->hwirq_base)) + return 0; + return d->irq_base + hwirq - d->hwirq_base; } +#define irq_domain_for_each_hwirq(d, hw) \ + for (hw = d->hwirq_base; hw < d->hwirq_base + d->nr_irq; hw++) + +#define irq_domain_for_each_irq(d, hw, irq) \ + for (hw = d->hwirq_base, irq = irq_domain_to_irq(d, hw); \ + hw < d->hwirq_base + d->nr_irq; \ + hw++, irq = irq_domain_to_irq(d, hw)) + extern void irq_domain_add(struct irq_domain *domain); extern void irq_domain_del(struct irq_domain *domain); #endif /* CONFIG_IRQ_DOMAIN */ -- cgit v1.2.2 From f50169324df4ad942e544386d136216c8617636a Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 23 May 2011 14:11:39 -0400 Subject: module.h: split out the EXPORT_SYMBOL into export.h A lot of files pull in module.h when all they are really looking for is the basic EXPORT_SYMBOL functionality. The recent data from Ingo[1] shows that this is one of several instances that has a significant impact on compile times, and it should be targeted for factoring out (as done here). Note that several commonly used header files in include/* directly include themselves (some 34 of them!) The most commonly used ones of these will have to be made independent of module.h before the full benefit of this change can be realized. We also transition THIS_MODULE from module.h to export.h, since there are lots of files with subsystem structs that in turn will have a struct module *owner and only be doing: .owner = THIS_MODULE; and absolutely nothing else modular. So, we also want to have the THIS_MODULE definition present in the lightweight header. [1] https://lkml.org/lkml/2011/5/23/76 Signed-off-by: Paul Gortmaker --- include/linux/export.h | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/module.h | 68 +------------------------------------- 2 files changed, 90 insertions(+), 67 deletions(-) create mode 100644 include/linux/export.h (limited to 'include/linux') diff --git a/include/linux/export.h b/include/linux/export.h new file mode 100644 index 000000000000..696c0f48afc7 --- /dev/null +++ b/include/linux/export.h @@ -0,0 +1,89 @@ +#ifndef _LINUX_EXPORT_H +#define _LINUX_EXPORT_H +/* + * Export symbols from the kernel to modules. Forked from module.h + * to reduce the amount of pointless cruft we feed to gcc when only + * exporting a simple symbol or two. + * + * If you feel the need to add #include to this file + * then you are doing something wrong and should go away silently. + */ + +/* Some toolchains use a `_' prefix for all user symbols. */ +#ifdef CONFIG_SYMBOL_PREFIX +#define MODULE_SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX +#else +#define MODULE_SYMBOL_PREFIX "" +#endif + +struct kernel_symbol +{ + unsigned long value; + const char *name; +}; + +#ifdef MODULE +extern struct module __this_module; +#define THIS_MODULE (&__this_module) +#else +#define THIS_MODULE ((struct module *)0) +#endif + +#ifdef CONFIG_MODULES + +#ifndef __GENKSYMS__ +#ifdef CONFIG_MODVERSIONS +/* Mark the CRC weak since genksyms apparently decides not to + * generate a checksums for some symbols */ +#define __CRC_SYMBOL(sym, sec) \ + extern void *__crc_##sym __attribute__((weak)); \ + static const unsigned long __kcrctab_##sym \ + __used \ + __attribute__((section("___kcrctab" sec "+" #sym), unused)) \ + = (unsigned long) &__crc_##sym; +#else +#define __CRC_SYMBOL(sym, sec) +#endif + +/* For every exported symbol, place a struct in the __ksymtab section */ +#define __EXPORT_SYMBOL(sym, sec) \ + extern typeof(sym) sym; \ + __CRC_SYMBOL(sym, sec) \ + static const char __kstrtab_##sym[] \ + __attribute__((section("__ksymtab_strings"), aligned(1))) \ + = MODULE_SYMBOL_PREFIX #sym; \ + static const struct kernel_symbol __ksymtab_##sym \ + __used \ + __attribute__((section("___ksymtab" sec "+" #sym), unused)) \ + = { (unsigned long)&sym, __kstrtab_##sym } + +#define EXPORT_SYMBOL(sym) \ + __EXPORT_SYMBOL(sym, "") + +#define EXPORT_SYMBOL_GPL(sym) \ + __EXPORT_SYMBOL(sym, "_gpl") + +#define EXPORT_SYMBOL_GPL_FUTURE(sym) \ + __EXPORT_SYMBOL(sym, "_gpl_future") + +#ifdef CONFIG_UNUSED_SYMBOLS +#define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused") +#define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl") +#else +#define EXPORT_UNUSED_SYMBOL(sym) +#define EXPORT_UNUSED_SYMBOL_GPL(sym) +#endif + +#endif /* __GENKSYMS__ */ + +#else /* !CONFIG_MODULES... */ + +#define EXPORT_SYMBOL(sym) +#define EXPORT_SYMBOL_GPL(sym) +#define EXPORT_SYMBOL_GPL_FUTURE(sym) +#define EXPORT_UNUSED_SYMBOL(sym) +#define EXPORT_UNUSED_SYMBOL_GPL(sym) + +#endif /* CONFIG_MODULES */ + +#endif /* _LINUX_EXPORT_H */ diff --git a/include/linux/module.h b/include/linux/module.h index 863921637d9f..9f0ddc808a82 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -25,21 +26,8 @@ /* Not Yet Implemented */ #define MODULE_SUPPORTED_DEVICE(name) -/* Some toolchains use a `_' prefix for all user symbols. */ -#ifdef CONFIG_SYMBOL_PREFIX -#define MODULE_SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX -#else -#define MODULE_SYMBOL_PREFIX "" -#endif - #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN -struct kernel_symbol -{ - unsigned long value; - const char *name; -}; - struct modversion_info { unsigned long crc; @@ -98,11 +86,8 @@ void trim_init_extable(struct module *m); extern const struct gtype##_id __mod_##gtype##_table \ __attribute__ ((unused, alias(__stringify(name)))) -extern struct module __this_module; -#define THIS_MODULE (&__this_module) #else /* !MODULE */ #define MODULE_GENERIC_TABLE(gtype,name) -#define THIS_MODULE ((struct module *)0) #endif /* Generic info of form tag = "info" */ @@ -218,52 +203,6 @@ struct module_use { struct module *source, *target; }; -#ifndef __GENKSYMS__ -#ifdef CONFIG_MODVERSIONS -/* Mark the CRC weak since genksyms apparently decides not to - * generate a checksums for some symbols */ -#define __CRC_SYMBOL(sym, sec) \ - extern void *__crc_##sym __attribute__((weak)); \ - static const unsigned long __kcrctab_##sym \ - __used \ - __attribute__((section("___kcrctab" sec "+" #sym), unused)) \ - = (unsigned long) &__crc_##sym; -#else -#define __CRC_SYMBOL(sym, sec) -#endif - -/* For every exported symbol, place a struct in the __ksymtab section */ -#define __EXPORT_SYMBOL(sym, sec) \ - extern typeof(sym) sym; \ - __CRC_SYMBOL(sym, sec) \ - static const char __kstrtab_##sym[] \ - __attribute__((section("__ksymtab_strings"), aligned(1))) \ - = MODULE_SYMBOL_PREFIX #sym; \ - static const struct kernel_symbol __ksymtab_##sym \ - __used \ - __attribute__((section("___ksymtab" sec "+" #sym), unused)) \ - = { (unsigned long)&sym, __kstrtab_##sym } - -#define EXPORT_SYMBOL(sym) \ - __EXPORT_SYMBOL(sym, "") - -#define EXPORT_SYMBOL_GPL(sym) \ - __EXPORT_SYMBOL(sym, "_gpl") - -#define EXPORT_SYMBOL_GPL_FUTURE(sym) \ - __EXPORT_SYMBOL(sym, "_gpl_future") - - -#ifdef CONFIG_UNUSED_SYMBOLS -#define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused") -#define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl") -#else -#define EXPORT_UNUSED_SYMBOL(sym) -#define EXPORT_UNUSED_SYMBOL_GPL(sym) -#endif - -#endif - enum module_state { MODULE_STATE_LIVE, @@ -581,11 +520,6 @@ int unregister_module_notifier(struct notifier_block * nb); extern void print_modules(void); #else /* !CONFIG_MODULES... */ -#define EXPORT_SYMBOL(sym) -#define EXPORT_SYMBOL_GPL(sym) -#define EXPORT_SYMBOL_GPL_FUTURE(sym) -#define EXPORT_UNUSED_SYMBOL(sym) -#define EXPORT_UNUSED_SYMBOL_GPL(sym) /* Given an address, look for it in the exception tables. */ static inline const struct exception_table_entry * -- cgit v1.2.2 From 639938eb606e94af498c589feae2f0b8a5c285d1 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Tue, 30 Aug 2011 11:24:44 -0400 Subject: module.h: relocate MODULE_PARM_DESC into moduleparam.h There are files which use module_param and MODULE_PARM_DESC back to back. They only include moduleparam.h which makes sense, but the implicit presence of module.h everywhere hid the fact that MODULE_PARM_DESC wasn't in moduleparam.h at all. Relocate the macro to moduleparam.h so that the moduleparam infrastructure can be used independently of module.h Signed-off-by: Paul Gortmaker --- include/linux/module.h | 5 ----- include/linux/moduleparam.h | 5 +++++ 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 9f0ddc808a82..3cb7839a60b9 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -135,11 +135,6 @@ extern const struct gtype##_id __mod_##gtype##_table \ /* What your module does. */ #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) -/* One for each parameter, describing how to use it. Some files do - multiple of these per line, so can't just use MODULE_INFO. */ -#define MODULE_PARM_DESC(_parm, desc) \ - __MODULE_INFO(parm, _parm, #_parm ":" desc) - #define MODULE_DEVICE_TABLE(type,name) \ MODULE_GENERIC_TABLE(type##_device,name) diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index fffb10bd5514..7939f636c8ba 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -31,6 +31,11 @@ static const char __module_cat(name,__LINE__)[] \ #define __MODULE_PARM_TYPE(name, _type) \ __MODULE_INFO(parmtype, name##type, #name ":" _type) +/* One for each parameter, describing how to use it. Some files do + multiple of these per line, so can't just use MODULE_INFO. */ +#define MODULE_PARM_DESC(_parm, desc) \ + __MODULE_INFO(parm, _parm, #_parm ":" desc) + struct kernel_param; struct kernel_param_ops { -- cgit v1.2.2 From 92407e75ce45b41c46944891711fd8faf0714d84 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Sun, 23 Oct 2011 20:21:17 -0700 Subject: nfs4: serialize layoutcommit Current pnfs_layoutcommit_inode can not handle parallel layoutcommit. And as Trond suggested , there is no need for client to optimize for parallel layoutcommit. So add NFS_INO_LAYOUTCOMMITTING flag to mark inflight layoutcommit and serialize lalyoutcommit with it. Also mark_inode_dirty_sync if pnfs_layoutcommit_inode fails to issue layoutcommit. Reported-by: Vitaliy Gusev Signed-off-by: Peng Tao Signed-off-by: Jim Rees Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 60a137b7f171..ab2c6343361a 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -229,6 +229,7 @@ struct nfs_inode { #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ #define NFS_INO_PNFS_COMMIT (8) /* use pnfs code for commit */ #define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ +#define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */ static inline struct nfs_inode *NFS_I(const struct inode *inode) { -- cgit v1.2.2 From ddeb3547d4823495c6604750c241e5a3810f51a3 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Mar 2011 15:11:29 -0300 Subject: edac: Move edac main structs to include/linux/edac.h As we'll need to use those structs for trace functions, they should be on a more public place. So, move struct mem_ctl_info & friends to edac.h. No functional changes on this patch. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Doug Thompson --- include/linux/edac.h | 350 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 350 insertions(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 4a73257b47d0..055b248bdd53 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -42,4 +42,354 @@ static inline void opstate_init(void) return; } +#define EDAC_MC_LABEL_LEN 31 +#define MC_PROC_NAME_MAX_LEN 7 + +/* memory devices */ +enum dev_type { + DEV_UNKNOWN = 0, + DEV_X1, + DEV_X2, + DEV_X4, + DEV_X8, + DEV_X16, + DEV_X32, /* Do these parts exist? */ + DEV_X64 /* Do these parts exist? */ +}; + +#define DEV_FLAG_UNKNOWN BIT(DEV_UNKNOWN) +#define DEV_FLAG_X1 BIT(DEV_X1) +#define DEV_FLAG_X2 BIT(DEV_X2) +#define DEV_FLAG_X4 BIT(DEV_X4) +#define DEV_FLAG_X8 BIT(DEV_X8) +#define DEV_FLAG_X16 BIT(DEV_X16) +#define DEV_FLAG_X32 BIT(DEV_X32) +#define DEV_FLAG_X64 BIT(DEV_X64) + +/* memory types */ +enum mem_type { + MEM_EMPTY = 0, /* Empty csrow */ + MEM_RESERVED, /* Reserved csrow type */ + MEM_UNKNOWN, /* Unknown csrow type */ + MEM_FPM, /* Fast page mode */ + MEM_EDO, /* Extended data out */ + MEM_BEDO, /* Burst Extended data out */ + MEM_SDR, /* Single data rate SDRAM */ + MEM_RDR, /* Registered single data rate SDRAM */ + MEM_DDR, /* Double data rate SDRAM */ + MEM_RDDR, /* Registered Double data rate SDRAM */ + MEM_RMBS, /* Rambus DRAM */ + MEM_DDR2, /* DDR2 RAM */ + MEM_FB_DDR2, /* fully buffered DDR2 */ + MEM_RDDR2, /* Registered DDR2 RAM */ + MEM_XDR, /* Rambus XDR */ + MEM_DDR3, /* DDR3 RAM */ + MEM_RDDR3, /* Registered DDR3 RAM */ +}; + +#define MEM_FLAG_EMPTY BIT(MEM_EMPTY) +#define MEM_FLAG_RESERVED BIT(MEM_RESERVED) +#define MEM_FLAG_UNKNOWN BIT(MEM_UNKNOWN) +#define MEM_FLAG_FPM BIT(MEM_FPM) +#define MEM_FLAG_EDO BIT(MEM_EDO) +#define MEM_FLAG_BEDO BIT(MEM_BEDO) +#define MEM_FLAG_SDR BIT(MEM_SDR) +#define MEM_FLAG_RDR BIT(MEM_RDR) +#define MEM_FLAG_DDR BIT(MEM_DDR) +#define MEM_FLAG_RDDR BIT(MEM_RDDR) +#define MEM_FLAG_RMBS BIT(MEM_RMBS) +#define MEM_FLAG_DDR2 BIT(MEM_DDR2) +#define MEM_FLAG_FB_DDR2 BIT(MEM_FB_DDR2) +#define MEM_FLAG_RDDR2 BIT(MEM_RDDR2) +#define MEM_FLAG_XDR BIT(MEM_XDR) +#define MEM_FLAG_DDR3 BIT(MEM_DDR3) +#define MEM_FLAG_RDDR3 BIT(MEM_RDDR3) + +/* chipset Error Detection and Correction capabilities and mode */ +enum edac_type { + EDAC_UNKNOWN = 0, /* Unknown if ECC is available */ + EDAC_NONE, /* Doesn't support ECC */ + EDAC_RESERVED, /* Reserved ECC type */ + EDAC_PARITY, /* Detects parity errors */ + EDAC_EC, /* Error Checking - no correction */ + EDAC_SECDED, /* Single bit error correction, Double detection */ + EDAC_S2ECD2ED, /* Chipkill x2 devices - do these exist? */ + EDAC_S4ECD4ED, /* Chipkill x4 devices */ + EDAC_S8ECD8ED, /* Chipkill x8 devices */ + EDAC_S16ECD16ED, /* Chipkill x16 devices */ +}; + +#define EDAC_FLAG_UNKNOWN BIT(EDAC_UNKNOWN) +#define EDAC_FLAG_NONE BIT(EDAC_NONE) +#define EDAC_FLAG_PARITY BIT(EDAC_PARITY) +#define EDAC_FLAG_EC BIT(EDAC_EC) +#define EDAC_FLAG_SECDED BIT(EDAC_SECDED) +#define EDAC_FLAG_S2ECD2ED BIT(EDAC_S2ECD2ED) +#define EDAC_FLAG_S4ECD4ED BIT(EDAC_S4ECD4ED) +#define EDAC_FLAG_S8ECD8ED BIT(EDAC_S8ECD8ED) +#define EDAC_FLAG_S16ECD16ED BIT(EDAC_S16ECD16ED) + +/* scrubbing capabilities */ +enum scrub_type { + SCRUB_UNKNOWN = 0, /* Unknown if scrubber is available */ + SCRUB_NONE, /* No scrubber */ + SCRUB_SW_PROG, /* SW progressive (sequential) scrubbing */ + SCRUB_SW_SRC, /* Software scrub only errors */ + SCRUB_SW_PROG_SRC, /* Progressive software scrub from an error */ + SCRUB_SW_TUNABLE, /* Software scrub frequency is tunable */ + SCRUB_HW_PROG, /* HW progressive (sequential) scrubbing */ + SCRUB_HW_SRC, /* Hardware scrub only errors */ + SCRUB_HW_PROG_SRC, /* Progressive hardware scrub from an error */ + SCRUB_HW_TUNABLE /* Hardware scrub frequency is tunable */ +}; + +#define SCRUB_FLAG_SW_PROG BIT(SCRUB_SW_PROG) +#define SCRUB_FLAG_SW_SRC BIT(SCRUB_SW_SRC) +#define SCRUB_FLAG_SW_PROG_SRC BIT(SCRUB_SW_PROG_SRC) +#define SCRUB_FLAG_SW_TUN BIT(SCRUB_SW_SCRUB_TUNABLE) +#define SCRUB_FLAG_HW_PROG BIT(SCRUB_HW_PROG) +#define SCRUB_FLAG_HW_SRC BIT(SCRUB_HW_SRC) +#define SCRUB_FLAG_HW_PROG_SRC BIT(SCRUB_HW_PROG_SRC) +#define SCRUB_FLAG_HW_TUN BIT(SCRUB_HW_TUNABLE) + +/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */ + +/* EDAC internal operation states */ +#define OP_ALLOC 0x100 +#define OP_RUNNING_POLL 0x201 +#define OP_RUNNING_INTERRUPT 0x202 +#define OP_RUNNING_POLL_INTR 0x203 +#define OP_OFFLINE 0x300 + +/* + * There are several things to be aware of that aren't at all obvious: + * + * + * SOCKETS, SOCKET SETS, BANKS, ROWS, CHIP-SELECT ROWS, CHANNELS, etc.. + * + * These are some of the many terms that are thrown about that don't always + * mean what people think they mean (Inconceivable!). In the interest of + * creating a common ground for discussion, terms and their definitions + * will be established. + * + * Memory devices: The individual chip on a memory stick. These devices + * commonly output 4 and 8 bits each. Grouping several + * of these in parallel provides 64 bits which is common + * for a memory stick. + * + * Memory Stick: A printed circuit board that aggregates multiple + * memory devices in parallel. This is the atomic + * memory component that is purchaseable by Joe consumer + * and loaded into a memory socket. + * + * Socket: A physical connector on the motherboard that accepts + * a single memory stick. + * + * Channel: Set of memory devices on a memory stick that must be + * grouped in parallel with one or more additional + * channels from other memory sticks. This parallel + * grouping of the output from multiple channels are + * necessary for the smallest granularity of memory access. + * Some memory controllers are capable of single channel - + * which means that memory sticks can be loaded + * individually. Other memory controllers are only + * capable of dual channel - which means that memory + * sticks must be loaded as pairs (see "socket set"). + * + * Chip-select row: All of the memory devices that are selected together. + * for a single, minimum grain of memory access. + * This selects all of the parallel memory devices across + * all of the parallel channels. Common chip-select rows + * for single channel are 64 bits, for dual channel 128 + * bits. + * + * Single-Ranked stick: A Single-ranked stick has 1 chip-select row of memory. + * Motherboards commonly drive two chip-select pins to + * a memory stick. A single-ranked stick, will occupy + * only one of those rows. The other will be unused. + * + * Double-Ranked stick: A double-ranked stick has two chip-select rows which + * access different sets of memory devices. The two + * rows cannot be accessed concurrently. + * + * Double-sided stick: DEPRECATED TERM, see Double-Ranked stick. + * A double-sided stick has two chip-select rows which + * access different sets of memory devices. The two + * rows cannot be accessed concurrently. "Double-sided" + * is irrespective of the memory devices being mounted + * on both sides of the memory stick. + * + * Socket set: All of the memory sticks that are required for + * a single memory access or all of the memory sticks + * spanned by a chip-select row. A single socket set + * has two chip-select rows and if double-sided sticks + * are used these will occupy those chip-select rows. + * + * Bank: This term is avoided because it is unclear when + * needing to distinguish between chip-select rows and + * socket sets. + * + * Controller pages: + * + * Physical pages: + * + * Virtual pages: + * + * + * STRUCTURE ORGANIZATION AND CHOICES + * + * + * + * PS - I enjoyed writing all that about as much as you enjoyed reading it. + */ + +struct channel_info { + int chan_idx; /* channel index */ + u32 ce_count; /* Correctable Errors for this CHANNEL */ + char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */ + struct csrow_info *csrow; /* the parent */ +}; + +struct csrow_info { + unsigned long first_page; /* first page number in dimm */ + unsigned long last_page; /* last page number in dimm */ + unsigned long page_mask; /* used for interleaving - + * 0UL for non intlv + */ + u32 nr_pages; /* number of pages in csrow */ + u32 grain; /* granularity of reported error in bytes */ + int csrow_idx; /* the chip-select row */ + enum dev_type dtype; /* memory device type */ + u32 ue_count; /* Uncorrectable Errors for this csrow */ + u32 ce_count; /* Correctable Errors for this csrow */ + enum mem_type mtype; /* memory csrow type */ + enum edac_type edac_mode; /* EDAC mode for this csrow */ + struct mem_ctl_info *mci; /* the parent */ + + struct kobject kobj; /* sysfs kobject for this csrow */ + + /* channel information for this csrow */ + u32 nr_channels; + struct channel_info *channels; +}; + +struct mcidev_sysfs_group { + const char *name; /* group name */ + const struct mcidev_sysfs_attribute *mcidev_attr; /* group attributes */ +}; + +struct mcidev_sysfs_group_kobj { + struct list_head list; /* list for all instances within a mc */ + + struct kobject kobj; /* kobj for the group */ + + const struct mcidev_sysfs_group *grp; /* group description table */ + struct mem_ctl_info *mci; /* the parent */ +}; + +/* mcidev_sysfs_attribute structure + * used for driver sysfs attributes and in mem_ctl_info + * sysfs top level entries + */ +struct mcidev_sysfs_attribute { + /* It should use either attr or grp */ + struct attribute attr; + const struct mcidev_sysfs_group *grp; /* Points to a group of attributes */ + + /* Ops for show/store values at the attribute - not used on group */ + ssize_t (*show)(struct mem_ctl_info *,char *); + ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); +}; + +/* MEMORY controller information structure + */ +struct mem_ctl_info { + struct list_head link; /* for global list of mem_ctl_info structs */ + + struct module *owner; /* Module owner of this control struct */ + + unsigned long mtype_cap; /* memory types supported by mc */ + unsigned long edac_ctl_cap; /* Mem controller EDAC capabilities */ + unsigned long edac_cap; /* configuration capabilities - this is + * closely related to edac_ctl_cap. The + * difference is that the controller may be + * capable of s4ecd4ed which would be listed + * in edac_ctl_cap, but if channels aren't + * capable of s4ecd4ed then the edac_cap would + * not have that capability. + */ + unsigned long scrub_cap; /* chipset scrub capabilities */ + enum scrub_type scrub_mode; /* current scrub mode */ + + /* Translates sdram memory scrub rate given in bytes/sec to the + internal representation and configures whatever else needs + to be configured. + */ + int (*set_sdram_scrub_rate) (struct mem_ctl_info * mci, u32 bw); + + /* Get the current sdram memory scrub rate from the internal + representation and converts it to the closest matching + bandwidth in bytes/sec. + */ + int (*get_sdram_scrub_rate) (struct mem_ctl_info * mci); + + + /* pointer to edac checking routine */ + void (*edac_check) (struct mem_ctl_info * mci); + + /* + * Remaps memory pages: controller pages to physical pages. + * For most MC's, this will be NULL. + */ + /* FIXME - why not send the phys page to begin with? */ + unsigned long (*ctl_page_to_phys) (struct mem_ctl_info * mci, + unsigned long page); + int mc_idx; + int nr_csrows; + struct csrow_info *csrows; + /* + * FIXME - what about controllers on other busses? - IDs must be + * unique. dev pointer should be sufficiently unique, but + * BUS:SLOT.FUNC numbers may not be unique. + */ + struct device *dev; + const char *mod_name; + const char *mod_ver; + const char *ctl_name; + const char *dev_name; + char proc_name[MC_PROC_NAME_MAX_LEN + 1]; + void *pvt_info; + u32 ue_noinfo_count; /* Uncorrectable Errors w/o info */ + u32 ce_noinfo_count; /* Correctable Errors w/o info */ + u32 ue_count; /* Total Uncorrectable Errors for this MC */ + u32 ce_count; /* Total Correctable Errors for this MC */ + unsigned long start_time; /* mci load start time (in jiffies) */ + + struct completion complete; + + /* edac sysfs device control */ + struct kobject edac_mci_kobj; + + /* list for all grp instances within a mc */ + struct list_head grp_kobj_list; + + /* Additional top controller level attributes, but specified + * by the low level driver. + * + * Set by the low level driver to provide attributes at the + * controller level, same level as 'ue_count' and 'ce_count' above. + * An array of structures, NULL terminated + * + * If attributes are desired, then set to array of attributes + * If no attributes are desired, leave NULL + */ + const struct mcidev_sysfs_attribute *mc_driver_sysfs_attributes; + + /* work struct for this MC */ + struct delayed_work work; + + /* the internal state of this controller instance */ + int op_state; +}; + #endif -- cgit v1.2.2 From 71a16736a15e3fd11d283c42aa86bf704f6d25ff Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 31 Oct 2011 20:18:54 +0000 Subject: dm: use local printk ratelimit printk_ratelimit() shares global ratelimiting state with all other subsystems, so its usage is discouraged. Instead, define and use dm's local state. Signed-off-by: Namhyung Kim Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 99e3e50b5c57..622678ccb5e0 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -10,6 +10,7 @@ #include #include +#include struct dm_dev; struct dm_target; @@ -375,6 +376,14 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); *---------------------------------------------------------------*/ #define DM_NAME "device-mapper" +#ifdef CONFIG_PRINTK +extern struct ratelimit_state dm_ratelimit_state; + +#define dm_ratelimit() __ratelimit(&dm_ratelimit_state) +#else +#define dm_ratelimit() 0 +#endif + #define DMCRIT(f, arg...) \ printk(KERN_CRIT DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) @@ -382,7 +391,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); printk(KERN_ERR DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) #define DMERR_LIMIT(f, arg...) \ do { \ - if (printk_ratelimit()) \ + if (dm_ratelimit()) \ printk(KERN_ERR DM_NAME ": " DM_MSG_PREFIX ": " \ f "\n", ## arg); \ } while (0) @@ -391,7 +400,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); printk(KERN_WARNING DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) #define DMWARN_LIMIT(f, arg...) \ do { \ - if (printk_ratelimit()) \ + if (dm_ratelimit()) \ printk(KERN_WARNING DM_NAME ": " DM_MSG_PREFIX ": " \ f "\n", ## arg); \ } while (0) @@ -400,7 +409,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); printk(KERN_INFO DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) #define DMINFO_LIMIT(f, arg...) \ do { \ - if (printk_ratelimit()) \ + if (dm_ratelimit()) \ printk(KERN_INFO DM_NAME ": " DM_MSG_PREFIX ": " f \ "\n", ## arg); \ } while (0) @@ -410,7 +419,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); printk(KERN_DEBUG DM_NAME ": " DM_MSG_PREFIX " DEBUG: " f "\n", ## arg) # define DMDEBUG_LIMIT(f, arg...) \ do { \ - if (printk_ratelimit()) \ + if (dm_ratelimit()) \ printk(KERN_DEBUG DM_NAME ": " DM_MSG_PREFIX ": " f \ "\n", ## arg); \ } while (0) -- cgit v1.2.2 From 7f06965390e4a10fb6906c886324bfd0a96961be Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Mon, 31 Oct 2011 20:18:58 +0000 Subject: dm kcopyd: add dm_kcopyd_zero to zero an area This patch introduces dm_kcopyd_zero() to make it easy to use kcopyd to write zeros into the requested areas instead instead of copying. It is implemented by passing a NULL copying source to dm_kcopyd_copy(). The forthcoming thin provisioning target uses this. Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/dm-kcopyd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dm-kcopyd.h b/include/linux/dm-kcopyd.h index 5e54458e920f..47d9d376e4e7 100644 --- a/include/linux/dm-kcopyd.h +++ b/include/linux/dm-kcopyd.h @@ -57,5 +57,9 @@ void *dm_kcopyd_prepare_callback(struct dm_kcopyd_client *kc, dm_kcopyd_notify_fn fn, void *context); void dm_kcopyd_do_callback(void *job, int read_err, unsigned long write_err); +int dm_kcopyd_zero(struct dm_kcopyd_client *kc, + unsigned num_dests, struct dm_io_region *dests, + unsigned flags, dm_kcopyd_notify_fn fn, void *context); + #endif /* __KERNEL__ */ #endif /* _LINUX_DM_KCOPYD_H */ -- cgit v1.2.2 From 3791e2fc0e4b40d4188e79b0a99bfa6bce714a10 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Mon, 31 Oct 2011 20:19:00 +0000 Subject: dm table: add singleton feature Introduce the concept of a singleton table which contains exactly one target. If a target type sets the DM_TARGET_SINGLETON feature bit device-mapper will ensure that any table that includes that target contains no others. The thin provisioning pool target uses this. Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 622678ccb5e0..294e78a7fccd 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -128,10 +128,6 @@ void dm_put_device(struct dm_target *ti, struct dm_dev *d); * Information about a target type */ -/* - * Target features - */ - struct target_type { uint64_t features; const char *name; @@ -160,6 +156,16 @@ struct target_type { struct list_head list; }; +/* + * Target features + */ + +/* + * Any table that contains an instance of this target must have only one. + */ +#define DM_TARGET_SINGLETON 0x00000001 +#define dm_target_needs_singleton(type) ((type)->features & DM_TARGET_SINGLETON) + struct dm_target { struct dm_table *table; struct target_type *type; -- cgit v1.2.2 From cc6cbe141a20f6d876b161b60af38d93935bfa85 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Mon, 31 Oct 2011 20:19:02 +0000 Subject: dm table: add always writeable feature Add a target feature flag DM_TARGET_ALWAYS_WRITEABLE to indicate that a target does not support read-only mode. The initial implementation of the thin provisioning target uses this. Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 294e78a7fccd..cc58e2d7c032 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -166,6 +166,13 @@ struct target_type { #define DM_TARGET_SINGLETON 0x00000001 #define dm_target_needs_singleton(type) ((type)->features & DM_TARGET_SINGLETON) +/* + * Indicates that a target does not support read-only devices. + */ +#define DM_TARGET_ALWAYS_WRITEABLE 0x00000002 +#define dm_target_always_writeable(type) \ + ((type)->features & DM_TARGET_ALWAYS_WRITEABLE) + struct dm_target { struct dm_table *table; struct target_type *type; -- cgit v1.2.2 From 36a0456fbf2d9680bf9af81b39daf4a8e22cb1b8 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Mon, 31 Oct 2011 20:19:04 +0000 Subject: dm table: add immutable feature Introduce DM_TARGET_IMMUTABLE to indicate that the target type cannot be mixed with any other target type, and once loaded into a device, it cannot be replaced with a table containing a different type. The thin provisioning pool device will use this. Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 7 +++++++ include/linux/dm-ioctl.h | 4 ++-- 2 files changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index cc58e2d7c032..98f34b886f95 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -173,6 +173,13 @@ struct target_type { #define dm_target_always_writeable(type) \ ((type)->features & DM_TARGET_ALWAYS_WRITEABLE) +/* + * Any device that contains a table with an instance of this target may never + * have tables containing any different target type. + */ +#define DM_TARGET_IMMUTABLE 0x00000004 +#define dm_target_is_immutable(type) ((type)->features & DM_TARGET_IMMUTABLE) + struct dm_target { struct dm_table *table; struct target_type *type; diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index 0cb8eff76bd6..75fd5573516e 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -267,9 +267,9 @@ enum { #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 21 +#define DM_VERSION_MINOR 22 #define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2011-07-06)" +#define DM_VERSION_EXTRA "-ioctl (2011-10-19)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ -- cgit v1.2.2 From 5a25f0eb707bbb4a5aaaf19c933605a6dbaf77a5 Mon Sep 17 00:00:00 2001 From: Jonathan E Brassow Date: Mon, 31 Oct 2011 20:21:24 +0000 Subject: dm log userspace: add log device dependency Allow userspace dm log implementations to register their log device so it is no longer missing from the list of device dependencies. When device mapper targets use a device they normally call dm_get_device which includes it in the device list returned to userspace applications such as LVM through the DM_TABLE_DEPS ioctl. Userspace log devices don't use dm_get_device as userspace opens them so they are missing from the list of dependencies. This patch extends the DM_ULOG_CTR operation to allow userspace to respond with the name of the log device (if appropriate) to be registered via 'dm_get_device'. DM_ULOG_REQUEST_VERSION is incremented. This is backwards compatible. If the kernel and userspace log server have both been updated, the new information will be passed down to the kernel and the device will be registered. If the kernel is new, but the log server is old, the log server will not pass down any device information and the kernel will simply bypass the device registration as before. If the kernel is old but the log server is new, the log server will see the old version number and not pass the device info. Signed-off-by: Jonathan Brassow Signed-off-by: Alasdair G Kergon --- include/linux/dm-log-userspace.h | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dm-log-userspace.h b/include/linux/dm-log-userspace.h index eeace7d3ff15..0678c2adc421 100644 --- a/include/linux/dm-log-userspace.h +++ b/include/linux/dm-log-userspace.h @@ -52,15 +52,20 @@ * Payload-to-userspace: * A single string containing all the argv arguments separated by ' 's * Payload-to-kernel: - * None. ('data_size' in the dm_ulog_request struct should be 0.) + * A NUL-terminated string that is the name of the device that is used + * as the backing store for the log data. 'dm_get_device' will be called + * on this device. ('dm_put_device' will be called on this device + * automatically after calling DM_ULOG_DTR.) If there is no device needed + * for log data, 'data_size' in the dm_ulog_request struct should be 0. * * The UUID contained in the dm_ulog_request structure is the reference that * will be used by all request types to a specific log. The constructor must - * record this assotiation with instance created. + * record this association with the instance created. * * When the request has been processed, user-space must return the - * dm_ulog_request to the kernel - setting the 'error' field and - * 'data_size' appropriately. + * dm_ulog_request to the kernel - setting the 'error' field, filling the + * data field with the log device if necessary, and setting 'data_size' + * appropriately. */ #define DM_ULOG_CTR 1 @@ -377,8 +382,11 @@ * dm_ulog_request or a change in the way requests are * issued/handled. Changes are outlined here: * version 1: Initial implementation + * version 2: DM_ULOG_CTR allowed to return a string containing a + * device name that is to be registered with DM via + * 'dm_get_device'. */ -#define DM_ULOG_REQUEST_VERSION 1 +#define DM_ULOG_REQUEST_VERSION 2 struct dm_ulog_request { /* -- cgit v1.2.2 From ced55d4ef7d6988bd0608423cf1e2225777f45cc Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sun, 17 Jul 2011 16:24:35 -0400 Subject: regulator: Fix implicit use of notifier.h by driver.h This was implicitly appearing by way of module.h -- but when we fix that, we'll get this: In file included from drivers/regulator/dummy.c:21: include/linux/regulator/driver.h:197: error: field 'notifier' has incomplete type make[3]: *** [drivers/regulator/dummy.o] Error 1 Signed-off-by: Paul Gortmaker --- include/linux/regulator/driver.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 12a1aa04b720..52c89ae32f64 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -16,6 +16,7 @@ #define __LINUX_REGULATOR_DRIVER_H_ #include +#include #include struct regulator_dev; -- cgit v1.2.2 From 51d7815e4b8da275868e52f837e53e8f6231578c Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 14:19:59 -0400 Subject: vermagic: delete unused include of This file consists of nothing other than things like: #ifdef CONFIG_FOO #define .... There is no reason for it to require module.h Signed-off-by: Paul Gortmaker --- include/linux/vermagic.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h index cf97b5b9d1fe..6f8fbcf10dfb 100644 --- a/include/linux/vermagic.h +++ b/include/linux/vermagic.h @@ -1,5 +1,4 @@ #include -#include /* Simply sanity version stamp for modules. */ #ifdef CONFIG_SMP -- cgit v1.2.2 From 4eae0cc4f42a8f630e16c23e141ea7b85787d3c4 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 11:41:46 -0400 Subject: sysdev.h: dont include for no reason The pretty much brings in the kitchen sink along with it, so it should be avoided wherever reasonably possible in terms of being included from other commonly used files, as it results in a measureable increase on compile times. There doesn't appear to be any module specifics in this file. The obvious people who were relying on the presence of the vast amount of stuff module.h sucked in have been fixed. If other files are implicitly relying on it, then lets see who they are and fix them too. Signed-off-by: Paul Gortmaker --- include/linux/sysdev.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h index d35e783a598c..20f63d3e6144 100644 --- a/include/linux/sysdev.h +++ b/include/linux/sysdev.h @@ -22,7 +22,6 @@ #define _SYSDEV_H_ #include -#include #include -- cgit v1.2.2 From 8a24454869a6f8e9d7968f88f78830f285089433 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 15:58:15 -0400 Subject: device_cgroup.h: delete needless include There is nothing modular in this file, and no reason to drag in all the extra headers that module.h brings with it, since it just slows down compiles. Signed-off-by: Paul Gortmaker --- include/linux/device_cgroup.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/device_cgroup.h b/include/linux/device_cgroup.h index 7aad1f440867..8b64221b432b 100644 --- a/include/linux/device_cgroup.h +++ b/include/linux/device_cgroup.h @@ -1,4 +1,3 @@ -#include #include #ifdef CONFIG_CGROUP_DEVICE -- cgit v1.2.2 From ddac6021fcc1768218c8b0453705801628289ba8 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 29 Aug 2011 10:52:50 -0400 Subject: miscdevice.h: delete unnecessary inclusion of module.h This file has a define MODULE_ALIAS_MISCDEV which in turn will use the MODULE_ALIAS define, but only if the former is explicitly used by modular device driver code (and such code should be already including module.h). Delete the include, since module.h is such a giant thing that we don't want it implicitly sneaking into compiles where it isn't specifically required. Signed-off-by: Paul Gortmaker --- include/linux/miscdevice.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index c309b1ecdc1c..8526e91d764f 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -1,6 +1,5 @@ #ifndef _LINUX_MISCDEVICE_H #define _LINUX_MISCDEVICE_H -#include #include /* -- cgit v1.2.2 From 7755c47123a927de480826f4448a0c215a639f12 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 15:58:15 -0400 Subject: of_platform.h: delete needless include There is nothing modular in this file, and no reason to drag in all the 357 headers that module.h brings with it, since it just slows down compiles. Signed-off-by: Paul Gortmaker --- include/linux/of_platform.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index 5a6f458a4bb7..040ce2f6e8de 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -12,7 +12,6 @@ */ #ifdef CONFIG_OF_DEVICE -#include #include #include #include -- cgit v1.2.2 From d0a9940289a74378c19078fac5b9858fd114dff7 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sat, 29 Oct 2011 10:17:06 -0400 Subject: of: fix implicit use of errno.h in include/linux/of.h It shows up as a build failure on MIPS, as it is used in three of_property function stubs. include/linux/of.h:275: error: 'ENOSYS' undeclared (first use in this function) include/linux/of.h:282: error: 'ENOSYS' undeclared (first use in this function) include/linux/of.h:295: error: 'ENOSYS' undeclared (first use in this function) Signed-off-by: Paul Gortmaker --- include/linux/of.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 5dbe263462a9..c1f5118c59b4 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -23,6 +23,7 @@ #include #include +#include typedef u32 phandle; typedef u32 ihandle; -- cgit v1.2.2 From bb2eac66ee0e8023432e8b0ff13b75e47be199e9 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sun, 17 Jul 2011 17:11:26 -0400 Subject: stop_machine.h: fix implicit use of smp.h for smp_processor_id This will show up on MIPS when we fix all the implicit header presences that are because of module.h being everywhere. In file included from kernel/trace/ftrace.c:16: include/linux/stop_machine.h: In function 'stop_one_cpu': include/linux/stop_machine.h:50: error: implicit declaration of function 'smp_processor_id' include/linux/stop_machine.h: In function 'stop_cpus': include/linux/stop_machine.h:80: error: implicit declaration of function 'raw_smp_processor_id' Signed-off-by: Paul Gortmaker --- include/linux/stop_machine.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 2d04ea916760..c170edc3bf5f 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -3,6 +3,7 @@ #include #include +#include #include #include -- cgit v1.2.2 From 1986c93f09c98628d68bec773c16322fb5b88c38 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 29 Aug 2011 15:22:17 -0400 Subject: miscdevice.h: fix up implicit use of lists and types MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit By removing the implicit presence of module.h from this file, we will see things like: In file included from fs/dlm/user.c:9: include/linux/miscdevice.h:50: error: field ‘list’ has incomplete type include/linux/miscdevice.h:54: error: expected specifier-qualifier-list before ‘mode_t’ Call out lists.h and types.h for inclusion to fix each of the above respectively. Signed-off-by: Paul Gortmaker --- include/linux/miscdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 8526e91d764f..c41d7270c6c6 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -1,6 +1,8 @@ #ifndef _LINUX_MISCDEVICE_H #define _LINUX_MISCDEVICE_H #include +#include +#include /* * These allocations are managed by device@lanana.org. If you use an -- cgit v1.2.2 From a8efa9d6bf00fbe9597dd3352dc062a998bf9b15 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Fri, 29 Jul 2011 16:55:11 +1000 Subject: linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h The implicit presence of module.h and all its sub-includes was masking these implicit header usages: include/linux/dmaengine.h:684: warning: 'struct page' declared inside parameter list include/linux/dmaengine.h:684: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/dmaengine.h:687: warning: 'struct page' declared inside parameter list include/linux/dmaengine.h:736:2: error: implicit declaration of function 'bitmap_zero' With input from Stephen Rothwell Signed-off-by: Paul Gortmaker --- include/linux/dmaengine.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 8fbf40e0713c..1ceff5ae9d31 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -24,6 +24,8 @@ #include #include #include +#include +#include struct scatterlist; -- cgit v1.2.2 From 246359d37985000b8403487e46867c4eb610af72 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Fri, 27 May 2011 07:08:41 -0400 Subject: pm_runtime.h: explicitly requires notifier.h This file was getting notifier.h via device.h --> module.h but the module.h inclusion is going away, so add notifier.h directly. Signed-off-by: Paul Gortmaker --- include/linux/pm_runtime.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 70b284024d9e..d8d903619642 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -10,6 +10,7 @@ #define _LINUX_PM_RUNTIME_H #include +#include #include #include -- cgit v1.2.2 From e2ffa376f67a0778891e26026e36605e5dd2fa4d Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sun, 17 Jul 2011 17:05:31 -0400 Subject: uwb.h: fix implicit use of asm/page.h for PAGE_SIZE Once we clean up the implicit presence of module.h (and all its sub-includes), we'll see an implicit dependency on page.h for the PAGE_SIZE define. So fix it in advance. Signed-off-by: Paul Gortmaker --- include/linux/uwb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/uwb.h b/include/linux/uwb.h index b0c564ec2160..7dbbee9741b7 100644 --- a/include/linux/uwb.h +++ b/include/linux/uwb.h @@ -33,6 +33,7 @@ #include #include #include +#include struct uwb_dev; struct uwb_beca_e; -- cgit v1.2.2 From 7c926402a7e8c9b279968fd94efec8700ba3859e Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 15:34:12 -0400 Subject: crypto.h: remove unused crypto_tfm_alg_modname() inline The (which is in turn in common headers like tcp.h) wants to use module_name() in an inline fcn. But having all of along for the ride is overkill and slows down compiles by a measureable amount, since it in turn includes lots of headers. Since the inline is never used anywhere in the kernel[1], we can just remove it, and then also remove the module.h include as well. In all the many crypto modules, there were some relying on crypto.h including module.h -- for them we now explicitly call out module.h for inclusion. [1] git grep shows some staging drivers also define the same static inline, but they also never ever use it. Signed-off-by: Paul Gortmaker --- include/linux/crypto.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/crypto.h b/include/linux/crypto.h index e5e468e9133d..1e51f9a491ae 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -18,7 +18,6 @@ #define _LINUX_CRYPTO_H #include -#include #include #include #include @@ -505,11 +504,6 @@ static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm) return tfm->__crt_alg->cra_priority; } -static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm) -{ - return module_name(tfm->__crt_alg->cra_module); -} - static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK; -- cgit v1.2.2 From eb5589a8f0dab7e29021344228856339e6a1249c Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Fri, 27 May 2011 09:02:11 -0400 Subject: include: convert various register fcns to macros to avoid include chaining The original implementations reference THIS_MODULE in an inline. We could include , but it is better to avoid chaining. Fortunately someone else already thought of this, and made a similar inline into a #define in for device_schedule_callback(), [see commit 523ded71de0] so follow that precedent here. Also bubble up any __must_check that were used on the prev. wrapper inline functions up one to the real __register functions, to preserve any prev. sanity checks that were used in those instances. Signed-off-by: Paul Gortmaker --- include/linux/bcma/bcma.h | 7 +++---- include/linux/device.h | 12 ++++++++---- include/linux/gameport.h | 17 ++++++++--------- include/linux/hid.h | 9 +++++---- include/linux/i2c.h | 7 +++---- include/linux/pci_hotplug.h | 10 +++------- include/linux/serio.h | 20 +++++++++++--------- include/linux/ssb/ssb.h | 7 +++---- include/linux/uio_driver.h | 10 +++++----- include/linux/usb.h | 9 +++++---- include/linux/uwb/umc.h | 7 +++---- 11 files changed, 57 insertions(+), 58 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index 5dbd7055cb86..4d4b59de9467 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -170,10 +170,9 @@ struct bcma_driver { }; extern int __bcma_driver_register(struct bcma_driver *drv, struct module *owner); -static inline int bcma_driver_register(struct bcma_driver *drv) -{ - return __bcma_driver_register(drv, THIS_MODULE); -} +#define bcma_driver_register(drv) \ + __bcma_driver_register(drv, THIS_MODULE) + extern void bcma_driver_unregister(struct bcma_driver *drv); struct bcma_bus { diff --git a/include/linux/device.h b/include/linux/device.h index 85e78fc7d7fd..61f29f6a403d 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -723,10 +723,14 @@ extern int dev_set_drvdata(struct device *dev, void *data); */ extern struct device *__root_device_register(const char *name, struct module *owner); -static inline struct device *root_device_register(const char *name) -{ - return __root_device_register(name, THIS_MODULE); -} + +/* + * This is a macro to avoid include problems with THIS_MODULE, + * just as per what is done for device_schedule_callback() above. + */ +#define root_device_register(name) \ + __root_device_register(name, THIS_MODULE) + extern void root_device_unregister(struct device *root); static inline void *dev_get_platdata(const struct device *dev) diff --git a/include/linux/gameport.h b/include/linux/gameport.h index b65a6f472775..e74073e9dd8d 100644 --- a/include/linux/gameport.h +++ b/include/linux/gameport.h @@ -71,10 +71,9 @@ void gameport_close(struct gameport *gameport); #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE)) void __gameport_register_port(struct gameport *gameport, struct module *owner); -static inline void gameport_register_port(struct gameport *gameport) -{ - __gameport_register_port(gameport, THIS_MODULE); -} +/* use a define to avoid include chaining to get THIS_MODULE */ +#define gameport_register_port(gameport) \ + __gameport_register_port(gameport, THIS_MODULE) void gameport_unregister_port(struct gameport *gameport); @@ -145,12 +144,12 @@ static inline void gameport_unpin_driver(struct gameport *gameport) mutex_unlock(&gameport->drv_mutex); } -int __gameport_register_driver(struct gameport_driver *drv, +int __must_check __gameport_register_driver(struct gameport_driver *drv, struct module *owner, const char *mod_name); -static inline int __must_check gameport_register_driver(struct gameport_driver *drv) -{ - return __gameport_register_driver(drv, THIS_MODULE, KBUILD_MODNAME); -} + +/* use a define to avoid include chaining to get THIS_MODULE & friends */ +#define gameport_register_driver(drv) \ + __gameport_register_driver(drv, THIS_MODULE, KBUILD_MODNAME) void gameport_unregister_driver(struct gameport_driver *drv); diff --git a/include/linux/hid.h b/include/linux/hid.h index deed5f9a1e1c..c235e4e8767c 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -697,10 +697,11 @@ extern void hid_destroy_device(struct hid_device *); extern int __must_check __hid_register_driver(struct hid_driver *, struct module *, const char *mod_name); -static inline int __must_check hid_register_driver(struct hid_driver *driver) -{ - return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); -} + +/* use a define to avoid include chaining to get THIS_MODULE & friends */ +#define hid_register_driver(driver) \ + __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) + extern void hid_unregister_driver(struct hid_driver *); extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 38a21c3edd2c..1be303bfc254 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -451,10 +451,9 @@ extern int i2c_add_numbered_adapter(struct i2c_adapter *); extern int i2c_register_driver(struct module *, struct i2c_driver *); extern void i2c_del_driver(struct i2c_driver *); -static inline int i2c_add_driver(struct i2c_driver *driver) -{ - return i2c_register_driver(THIS_MODULE, driver); -} +/* use a define to avoid include chaining to get THIS_MODULE */ +#define i2c_add_driver(driver) \ + i2c_register_driver(THIS_MODULE, driver) extern struct i2c_client *i2c_use_client(struct i2c_client *client); extern void i2c_release_client(struct i2c_client *client); diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h index 5d09cbafa7db..45fc162cbdc0 100644 --- a/include/linux/pci_hotplug.h +++ b/include/linux/pci_hotplug.h @@ -132,13 +132,9 @@ extern int pci_hp_deregister(struct hotplug_slot *slot); extern int __must_check pci_hp_change_slot_info (struct hotplug_slot *slot, struct hotplug_slot_info *info); -static inline int pci_hp_register(struct hotplug_slot *slot, - struct pci_bus *pbus, - int devnr, const char *name) -{ - return __pci_hp_register(slot, pbus, devnr, name, - THIS_MODULE, KBUILD_MODNAME); -} +/* use a define to avoid include chaining to get THIS_MODULE & friends */ +#define pci_hp_register(slot, pbus, devnr, name) \ + __pci_hp_register(slot, pbus, devnr, name, THIS_MODULE, KBUILD_MODNAME) /* PCI Setting Record (Type 0) */ struct hpp_type0 { diff --git a/include/linux/serio.h b/include/linux/serio.h index be7dfb0f12d0..ca82861b0e46 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -79,19 +79,21 @@ void serio_reconnect(struct serio *serio); irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags); void __serio_register_port(struct serio *serio, struct module *owner); -static inline void serio_register_port(struct serio *serio) -{ - __serio_register_port(serio, THIS_MODULE); -} + +/* use a define to avoid include chaining to get THIS_MODULE */ +#define serio_register_port(serio) \ + __serio_register_port(serio, THIS_MODULE) void serio_unregister_port(struct serio *serio); void serio_unregister_child_port(struct serio *serio); -int __serio_register_driver(struct serio_driver *drv, struct module *owner, const char *mod_name); -static inline int __must_check serio_register_driver(struct serio_driver *drv) -{ - return __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME); -} +int __must_check __serio_register_driver(struct serio_driver *drv, + struct module *owner, const char *mod_name); + +/* use a define to avoid include chaining to get THIS_MODULE & friends */ +#define serio_register_driver(drv) \ + __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME) + void serio_unregister_driver(struct serio_driver *drv); static inline int serio_write(struct serio *serio, unsigned char data) diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index f10ed7b4a714..061e560251b4 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -231,10 +231,9 @@ struct ssb_driver { #define drv_to_ssb_drv(_drv) container_of(_drv, struct ssb_driver, drv) extern int __ssb_driver_register(struct ssb_driver *drv, struct module *owner); -static inline int ssb_driver_register(struct ssb_driver *drv) -{ - return __ssb_driver_register(drv, THIS_MODULE); -} +#define ssb_driver_register(drv) \ + __ssb_driver_register(drv, THIS_MODULE) + extern void ssb_driver_unregister(struct ssb_driver *drv); diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index fd99ff9298c6..73898189a97c 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -101,11 +101,11 @@ extern int __must_check __uio_register_device(struct module *owner, struct device *parent, struct uio_info *info); -static inline int __must_check - uio_register_device(struct device *parent, struct uio_info *info) -{ - return __uio_register_device(THIS_MODULE, parent, info); -} + +/* use a define to avoid include chaining to get THIS_MODULE */ +#define uio_register_device(parent, info) \ + __uio_register_device(THIS_MODULE, parent, info) + extern void uio_unregister_device(struct uio_info *info); extern void uio_event_notify(struct uio_info *info); diff --git a/include/linux/usb.h b/include/linux/usb.h index 6f49a1b39fa6..d3d0c1374334 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -946,10 +946,11 @@ struct usb_class_driver { */ extern int usb_register_driver(struct usb_driver *, struct module *, const char *); -static inline int usb_register(struct usb_driver *driver) -{ - return usb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); -} + +/* use a define to avoid include chaining to get THIS_MODULE & friends */ +#define usb_register(driver) \ + usb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) + extern void usb_deregister(struct usb_driver *); extern int usb_register_device_driver(struct usb_device_driver *, diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h index 7b4842028ca7..891d1d5f3947 100644 --- a/include/linux/uwb/umc.h +++ b/include/linux/uwb/umc.h @@ -111,10 +111,9 @@ int __must_check __umc_driver_register(struct umc_driver *umc_drv, * umc_driver_register - register a UMC capabiltity driver. * @umc_drv: pointer to the driver. */ -static inline int __must_check umc_driver_register(struct umc_driver *umc_drv) -{ - return __umc_driver_register(umc_drv, THIS_MODULE, KBUILD_MODNAME); -} +#define umc_driver_register(umc_drv) \ + __umc_driver_register(umc_drv, THIS_MODULE, KBUILD_MODNAME) + void umc_driver_unregister(struct umc_driver *umc_drv); /* -- cgit v1.2.2 From de47725421ad5627a5c905f4e40bb844ebc06d29 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 May 2011 13:46:22 -0400 Subject: include: replace linux/module.h with "struct module" wherever possible The pretty much brings in the kitchen sink along with it, so it should be avoided wherever reasonably possible in terms of being included from other commonly used files, as it results in a measureable increase on compile times. The worst culprit was probably device.h since it is used everywhere. This file also had an implicit dependency/usage of mutex.h which was masked by module.h, and is also fixed here at the same time. There are over a dozen other headers that simply declare the struct instead of pulling in the whole file, so follow their lead and simply make it a few more. Most of the implicit dependencies on module.h being present by these headers pulling it in have been now weeded out, so we can finally make this change with hopefully minimal breakage. Signed-off-by: Paul Gortmaker --- include/linux/blkdev.h | 2 +- include/linux/cpuidle.h | 3 ++- include/linux/device.h | 3 ++- include/linux/firmware.h | 2 +- include/linux/ftrace.h | 2 +- include/linux/i2c.h | 3 ++- include/linux/ipmi.h | 3 ++- include/linux/ipmi_smi.h | 1 - include/linux/mdio-bitbang.h | 3 ++- include/linux/mtd/mtd.h | 3 ++- include/linux/regmap.h | 2 +- include/linux/sunrpc/svc_xprt.h | 3 ++- include/linux/textsearch.h | 3 ++- include/linux/uio_driver.h | 2 +- include/linux/vlynq.h | 3 ++- 15 files changed, 23 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 7fbaa9103344..d750a3a79299 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -22,6 +21,7 @@ #include +struct module; struct scsi_ioctl_command; struct request_queue; diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index b51629e15cfc..583baf22cad2 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -13,7 +13,6 @@ #include #include -#include #include #include @@ -21,6 +20,8 @@ #define CPUIDLE_NAME_LEN 16 #define CPUIDLE_DESC_LEN 32 +struct module; + struct cpuidle_device; diff --git a/include/linux/device.h b/include/linux/device.h index 61f29f6a403d..8ff7dc801fd5 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include #include #include @@ -29,6 +29,7 @@ struct device; struct device_private; struct device_driver; struct driver_private; +struct module; struct class; struct subsys_private; struct bus_type; diff --git a/include/linux/firmware.h b/include/linux/firmware.h index 21b3e7588abd..1e7c01189fa6 100644 --- a/include/linux/firmware.h +++ b/include/linux/firmware.h @@ -1,7 +1,6 @@ #ifndef _LINUX_FIRMWARE_H #define _LINUX_FIRMWARE_H -#include #include #include #include @@ -15,6 +14,7 @@ struct firmware { struct page **pages; }; +struct module; struct device; struct builtin_fw { diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index f0c0e8a47ae6..26eafcef75be 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -10,7 +10,6 @@ #include #include #include -#include #include #include #include @@ -19,6 +18,7 @@ #include +struct module; struct ftrace_hash; #ifdef CONFIG_FUNCTION_TRACER diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 1be303bfc254..a81bf6d23b3e 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -28,7 +28,6 @@ #include #ifdef __KERNEL__ -#include #include #include /* for struct device */ #include /* for completion */ @@ -49,6 +48,8 @@ struct i2c_driver; union i2c_smbus_data; struct i2c_board_info; +struct module; + #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) /* * The master routines are the ones normally used to transmit data to devices diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h index ca85cf894e33..bbd156bb953b 100644 --- a/include/linux/ipmi.h +++ b/include/linux/ipmi.h @@ -220,10 +220,11 @@ struct kernel_ipmi_msg { * The in-kernel interface. */ #include -#include #include #include +struct module; + /* Opaque type for a IPMI message user. One of these is needed to send and receive messages. */ typedef struct ipmi_user *ipmi_user_t; diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h index 204f9cd26c16..3ef0d8b6aa6f 100644 --- a/include/linux/ipmi_smi.h +++ b/include/linux/ipmi_smi.h @@ -36,7 +36,6 @@ #include #include -#include #include #include #include diff --git a/include/linux/mdio-bitbang.h b/include/linux/mdio-bitbang.h index 8ea9a42a4c02..0fe00cd4c93c 100644 --- a/include/linux/mdio-bitbang.h +++ b/include/linux/mdio-bitbang.h @@ -2,7 +2,8 @@ #define __LINUX_MDIO_BITBANG_H #include -#include + +struct module; struct mdiobb_ctrl; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 2541fb848daa..37be05bbfbc8 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -21,7 +21,6 @@ #define __MTD_MTD_H__ #include -#include #include #include #include @@ -125,6 +124,8 @@ struct nand_ecclayout { struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE]; }; +struct module; /* only needed for owner field in mtd_info */ + struct mtd_info { u_char type; uint32_t flags; diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 3daac2d8dc37..690276a642cf 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -15,8 +15,8 @@ #include #include -#include +struct module; struct i2c_client; struct spi_device; diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 7ad9751a0d87..8620f79658d4 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -8,7 +8,8 @@ #define SUNRPC_SVC_XPRT_H #include -#include + +struct module; struct svc_xprt_ops { struct svc_xprt *(*xpo_create)(struct svc_serv *, diff --git a/include/linux/textsearch.h b/include/linux/textsearch.h index d9a85d616385..cfaee869146f 100644 --- a/include/linux/textsearch.h +++ b/include/linux/textsearch.h @@ -4,10 +4,11 @@ #include #include #include -#include #include #include +struct module; + struct ts_config; #define TS_AUTOLOAD 1 /* Automatically load textsearch modules when needed */ diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index 73898189a97c..1ad4724458de 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -14,10 +14,10 @@ #ifndef _UIO_DRIVER_H_ #define _UIO_DRIVER_H_ -#include #include #include +struct module; struct uio_map; /** diff --git a/include/linux/vlynq.h b/include/linux/vlynq.h index 8f6a95882b09..017d4a53d55e 100644 --- a/include/linux/vlynq.h +++ b/include/linux/vlynq.h @@ -20,9 +20,10 @@ #define __VLYNQ_H__ #include -#include #include +struct module; + #define VLYNQ_NUM_IRQS 32 struct vlynq_mapping { -- cgit v1.2.2 From ec53cf23c0ddb0c29950b9a4ac46964c4c6c6c2f Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 19 Sep 2011 20:33:19 -0400 Subject: irq: don't put module.h into irq.h for tracking irqgen modules. Recent commit "irq: Track the owner of irq descriptor" in commit ID b6873807a7143b7 placed module.h into linux/irq.h but we are trying to limit module.h inclusion to just C files that really need it, due to its size and number of children includes. This targets just reversing that include. Add in the basic "struct module" since that is all we really need to ensure things compile. In theory, b687380 should have added the module.h include to the irqdesc.h header as well, but the implicit module.h everywhere presence masked this from showing up. So give it the "struct module" as well. As for the C files, irqdesc.c is only using THIS_MODULE, so it does not need module.h - give it export.h instead. The C file irq/manage.c is now (as of b687380) using try_module_get and module_put and so it needs module.h (which it already has). Also convert the irq_alloc_descs variants to macros, since all they really do is is call the __irq_alloc_descs primitive. This avoids including export.h and no debug info is lost. Signed-off-by: Paul Gortmaker --- include/linux/irq.h | 32 ++++++++++++-------------------- include/linux/irqdesc.h | 1 + 2 files changed, 13 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 59e49c80cc2c..bff29c58da23 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -23,13 +23,13 @@ #include #include #include -#include #include #include #include struct seq_file; +struct module; struct irq_desc; struct irq_data; typedef void (*irq_flow_handler_t)(unsigned int irq, @@ -567,29 +567,21 @@ static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, struct module *owner); -static inline int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, - int node) -{ - return __irq_alloc_descs(irq, from, cnt, node, THIS_MODULE); -} +/* use macros to avoid needing export.h for THIS_MODULE */ +#define irq_alloc_descs(irq, from, cnt, node) \ + __irq_alloc_descs(irq, from, cnt, node, THIS_MODULE) -void irq_free_descs(unsigned int irq, unsigned int cnt); -int irq_reserve_irqs(unsigned int from, unsigned int cnt); +#define irq_alloc_desc(node) \ + irq_alloc_descs(-1, 0, 1, node) -static inline int irq_alloc_desc(int node) -{ - return irq_alloc_descs(-1, 0, 1, node); -} +#define irq_alloc_desc_at(at, node) \ + irq_alloc_descs(at, at, 1, node) -static inline int irq_alloc_desc_at(unsigned int at, int node) -{ - return irq_alloc_descs(at, at, 1, node); -} +#define irq_alloc_desc_from(from, node) \ + irq_alloc_descs(-1, from, 1, node) -static inline int irq_alloc_desc_from(unsigned int from, int node) -{ - return irq_alloc_descs(-1, from, 1, node); -} +void irq_free_descs(unsigned int irq, unsigned int cnt); +int irq_reserve_irqs(unsigned int from, unsigned int cnt); static inline void irq_free_desc(unsigned int irq) { diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 6b69c2c9dff1..f1e2527006bd 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -11,6 +11,7 @@ struct irq_affinity_notify; struct proc_dir_entry; struct timer_rand_state; +struct module; /** * struct irq_desc - interrupt descriptor * @irq_data: per irq and chip data passed down to chip functions -- cgit v1.2.2 From 6eea69dd8befeabd3d0f217400f54b157dd91fe9 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 31 Oct 2011 17:06:29 -0700 Subject: include/linux/dmar.h: forward-declare struct acpi_dmar_header x86_64 allnoconfig: In file included from arch/x86/kernel/pci-dma.c:3: include/linux/dmar.h:248: warning: 'struct acpi_dmar_header' declared inside parameter list include/linux/dmar.h:248: warning: its scope is only this definition or declaration, which is probably not what you want Cc: Suresh Siddha Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/dmar.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmar.h b/include/linux/dmar.h index a8b1a847c103..731a60975101 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -26,6 +26,8 @@ #include #include +struct acpi_dmar_header; + /* DMAR Flags */ #define DMAR_INTR_REMAP 0x1 #define DMAR_X2APIC_OPT_OUT 0x2 -- cgit v1.2.2 From fcf634098c00dd9cd247447368495f0b79be12d1 Mon Sep 17 00:00:00 2001 From: Christopher Yeoh Date: Mon, 31 Oct 2011 17:06:39 -0700 Subject: Cross Memory Attach The basic idea behind cross memory attach is to allow MPI programs doing intra-node communication to do a single copy of the message rather than a double copy of the message via shared memory. The following patch attempts to achieve this by allowing a destination process, given an address and size from a source process, to copy memory directly from the source process into its own address space via a system call. There is also a symmetrical ability to copy from the current process's address space into a destination process's address space. - Use of /proc/pid/mem has been considered, but there are issues with using it: - Does not allow for specifying iovecs for both src and dest, assuming preadv or pwritev was implemented either the area read from or written to would need to be contiguous. - Currently mem_read allows only processes who are currently ptrace'ing the target and are still able to ptrace the target to read from the target. This check could possibly be moved to the open call, but its not clear exactly what race this restriction is stopping (reason appears to have been lost) - Having to send the fd of /proc/self/mem via SCM_RIGHTS on unix domain socket is a bit ugly from a userspace point of view, especially when you may have hundreds if not (eventually) thousands of processes that all need to do this with each other - Doesn't allow for some future use of the interface we would like to consider adding in the future (see below) - Interestingly reading from /proc/pid/mem currently actually involves two copies! (But this could be fixed pretty easily) As mentioned previously use of vmsplice instead was considered, but has problems. Since you need the reader and writer working co-operatively if the pipe is not drained then you block. Which requires some wrapping to do non blocking on the send side or polling on the receive. In all to all communication it requires ordering otherwise you can deadlock. And in the example of many MPI tasks writing to one MPI task vmsplice serialises the copying. There are some cases of MPI collectives where even a single copy interface does not get us the performance gain we could. For example in an MPI_Reduce rather than copy the data from the source we would like to instead use it directly in a mathops (say the reduce is doing a sum) as this would save us doing a copy. We don't need to keep a copy of the data from the source. I haven't implemented this, but I think this interface could in the future do all this through the use of the flags - eg could specify the math operation and type and the kernel rather than just copying the data would apply the specified operation between the source and destination and store it in the destination. Although we don't have a "second user" of the interface (though I've had some nibbles from people who may be interested in using it for intra process messaging which is not MPI). This interface is something which hardware vendors are already doing for their custom drivers to implement fast local communication. And so in addition to this being useful for OpenMPI it would mean the driver maintainers don't have to fix things up when the mm changes. There was some discussion about how much faster a true zero copy would go. Here's a link back to the email with some testing I did on that: http://marc.info/?l=linux-mm&m=130105930902915&w=2 There is a basic man page for the proposed interface here: http://ozlabs.org/~cyeoh/cma/process_vm_readv.txt This has been implemented for x86 and powerpc, other architecture should mainly (I think) just need to add syscall numbers for the process_vm_readv and process_vm_writev. There are 32 bit compatibility versions for 64-bit kernels. For arch maintainers there are some simple tests to be able to quickly verify that the syscalls are working correctly here: http://ozlabs.org/~cyeoh/cma/cma-test-20110718.tgz Signed-off-by: Chris Yeoh Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Cc: Arnd Bergmann Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: David Howells Cc: James Morris Cc: Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compat.h | 3 ++- include/linux/fs.h | 7 ++++--- include/linux/syscalls.h | 13 +++++++++++++ 3 files changed, 19 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index c6e7523bf765..154bf5683015 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -547,7 +547,8 @@ extern ssize_t compat_rw_copy_check_uvector(int type, const struct compat_iovec __user *uvector, unsigned long nr_segs, unsigned long fast_segs, struct iovec *fast_pointer, - struct iovec **ret_pointer); + struct iovec **ret_pointer, + int check_access); extern void __user *compat_alloc_user_space(unsigned long len); diff --git a/include/linux/fs.h b/include/linux/fs.h index 14493a2d5a03..87b4c6b9692d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1633,9 +1633,10 @@ struct inode_operations { struct seq_file; ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, - unsigned long nr_segs, unsigned long fast_segs, - struct iovec *fast_pointer, - struct iovec **ret_pointer); + unsigned long nr_segs, unsigned long fast_segs, + struct iovec *fast_pointer, + struct iovec **ret_pointer, + int check_access); extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 1ff0ec2a5e8d..86a24b1166d1 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -844,4 +844,17 @@ asmlinkage long sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); asmlinkage long sys_setns(int fd, int nstype); +asmlinkage long sys_process_vm_readv(pid_t pid, + const struct iovec __user *lvec, + unsigned long liovcnt, + const struct iovec __user *rvec, + unsigned long riovcnt, + unsigned long flags); +asmlinkage long sys_process_vm_writev(pid_t pid, + const struct iovec __user *lvec, + unsigned long liovcnt, + const struct iovec __user *rvec, + unsigned long riovcnt, + unsigned long flags); + #endif -- cgit v1.2.2 From 4356f21d09283dc6d39a6f7287a65ddab61e2808 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Mon, 31 Oct 2011 17:06:47 -0700 Subject: mm: change isolate mode from #define to bitwise type Change ISOLATE_XXX macro with bitwise isolate_mode_t type. Normally, macro isn't recommended as it's type-unsafe and making debugging harder as symbol cannot be passed throught to the debugger. Quote from Johannes " Hmm, it would probably be cleaner to fully convert the isolation mode into independent flags. INACTIVE, ACTIVE, BOTH is currently a tri-state among flags, which is a bit ugly." This patch moves isolate mode from swap.h to mmzone.h by memcontrol.h Signed-off-by: Minchan Kim Cc: Johannes Weiner Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Mel Gorman Cc: Rik van Riel Cc: Michal Hocko Cc: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 3 ++- include/linux/mmzone.h | 8 ++++++++ include/linux/swap.h | 7 +------ 3 files changed, 11 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 343bd7661f2a..ac797fa03ef8 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -35,7 +35,8 @@ enum mem_cgroup_page_stat_item { extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, struct list_head *dst, unsigned long *scanned, int order, - int mode, struct zone *z, + isolate_mode_t mode, + struct zone *z, struct mem_cgroup *mem_cont, int active, int file); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index be1ac8d7789b..436ce6e7a446 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -164,6 +164,14 @@ static inline int is_unevictable_lru(enum lru_list l) #define LRU_ALL_EVICTABLE (LRU_ALL_FILE | LRU_ALL_ANON) #define LRU_ALL ((1 << NR_LRU_LISTS) - 1) +/* Isolate inactive pages */ +#define ISOLATE_INACTIVE ((__force isolate_mode_t)0x1) +/* Isolate active pages */ +#define ISOLATE_ACTIVE ((__force isolate_mode_t)0x2) + +/* LRU Isolation modes. */ +typedef unsigned __bitwise__ isolate_mode_t; + enum zone_watermarks { WMARK_MIN, WMARK_LOW, diff --git a/include/linux/swap.h b/include/linux/swap.h index c71f84bb62ec..1e22e126d2ac 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -243,15 +243,10 @@ static inline void lru_cache_add_file(struct page *page) __lru_cache_add(page, LRU_INACTIVE_FILE); } -/* LRU Isolation modes. */ -#define ISOLATE_INACTIVE 0 /* Isolate inactive pages. */ -#define ISOLATE_ACTIVE 1 /* Isolate active pages. */ -#define ISOLATE_BOTH 2 /* Isolate both active and inactive pages. */ - /* linux/mm/vmscan.c */ extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask); -extern int __isolate_lru_page(struct page *page, int mode, int file); +extern int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file); extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem, gfp_t gfp_mask, bool noswap); extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, -- cgit v1.2.2 From 39deaf8585152f1a35c1676d3d7dc6ae0fb65967 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Mon, 31 Oct 2011 17:06:51 -0700 Subject: mm: compaction: make isolate_lru_page() filter-aware In async mode, compaction doesn't migrate dirty or writeback pages. So, it's meaningless to pick the page and re-add it to lru list. Of course, when we isolate the page in compaction, the page might be dirty or writeback but when we try to migrate the page, the page would be not dirty, writeback. So it could be migrated. But it's very unlikely as isolate and migration cycle is much faster than writeout. So, this patch helps cpu overhead and prevent unnecessary LRU churning. Signed-off-by: Minchan Kim Acked-by: Johannes Weiner Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: KOSAKI Motohiro Acked-by: Mel Gorman Acked-by: Rik van Riel Reviewed-by: Michal Hocko Cc: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 436ce6e7a446..80da968798ea 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -168,6 +168,8 @@ static inline int is_unevictable_lru(enum lru_list l) #define ISOLATE_INACTIVE ((__force isolate_mode_t)0x1) /* Isolate active pages */ #define ISOLATE_ACTIVE ((__force isolate_mode_t)0x2) +/* Isolate clean file */ +#define ISOLATE_CLEAN ((__force isolate_mode_t)0x4) /* LRU Isolation modes. */ typedef unsigned __bitwise__ isolate_mode_t; -- cgit v1.2.2 From f80c0673610e36ae29d63e3297175e22f70dde5f Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Mon, 31 Oct 2011 17:06:55 -0700 Subject: mm: zone_reclaim: make isolate_lru_page() filter-aware In __zone_reclaim case, we don't want to shrink mapped page. Nonetheless, we have isolated mapped page and re-add it into LRU's head. It's unnecessary CPU overhead and makes LRU churning. Of course, when we isolate the page, the page might be mapped but when we try to migrate the page, the page would be not mapped. So it could be migrated. But race is rare and although it happens, it's no big deal. Signed-off-by: Minchan Kim Acked-by: Johannes Weiner Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: KOSAKI Motohiro Reviewed-by: Michal Hocko Cc: Mel Gorman Cc: Rik van Riel Cc: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 80da968798ea..ec57779c5a57 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -170,6 +170,8 @@ static inline int is_unevictable_lru(enum lru_list l) #define ISOLATE_ACTIVE ((__force isolate_mode_t)0x2) /* Isolate clean file */ #define ISOLATE_CLEAN ((__force isolate_mode_t)0x4) +/* Isolate unmapped file */ +#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x8) /* LRU Isolation modes. */ typedef unsigned __bitwise__ isolate_mode_t; -- cgit v1.2.2 From c9f01245b6a7d77d17deaa71af10f6aca14fa24e Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Mon, 31 Oct 2011 17:07:15 -0700 Subject: oom: remove oom_disable_count This removes mm->oom_disable_count entirely since it's unnecessary and currently buggy. The counter was intended to be per-process but it's currently decremented in the exit path for each thread that exits, causing it to underflow. The count was originally intended to prevent oom killing threads that share memory with threads that cannot be killed since it doesn't lead to future memory freeing. The counter could be fixed to represent all threads sharing the same mm, but it's better to remove the count since: - it is possible that the OOM_DISABLE thread sharing memory with the victim is waiting on that thread to exit and will actually cause future memory freeing, and - there is no guarantee that a thread is disabled from oom killing just because another thread sharing its mm is oom disabled. Signed-off-by: David Rientjes Reported-by: Oleg Nesterov Reviewed-by: Oleg Nesterov Cc: Ying Han Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index c93d00a6e95d..6456624aa964 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -336,9 +336,6 @@ struct mm_struct { unsigned int token_priority; unsigned int last_interval; - /* How many tasks sharing this mm are OOM_DISABLE */ - atomic_t oom_disable_count; - unsigned long flags; /* Must use atomic bitops to access the bits */ struct core_state *core_state; /* coredumping support */ -- cgit v1.2.2 From 43362a4977e37db46f86f7e6ab935f0006956632 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Mon, 31 Oct 2011 17:07:18 -0700 Subject: oom: fix race while temporarily setting current's oom_score_adj test_set_oom_score_adj() was introduced in 72788c385604 ("oom: replace PF_OOM_ORIGIN with toggling oom_score_adj") to temporarily elevate current's oom_score_adj for ksm and swapoff without requiring an additional per-process flag. Using that function to both set oom_score_adj to OOM_SCORE_ADJ_MAX and then reinstate the previous value is racy since it's possible that userspace can set the value to something else itself before the old value is reinstated. That results in userspace setting current's oom_score_adj to a different value and then the kernel immediately setting it back to its previous value without notification. To fix this, a new compare_swap_oom_score_adj() function is introduced with the same semantics as the compare and swap CAS instruction, or CMPXCHG on x86. It is used to reinstate the previous value of oom_score_adj if and only if the present value is the same as the old value. Signed-off-by: David Rientjes Cc: Oleg Nesterov Cc: Ying Han Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/oom.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/oom.h b/include/linux/oom.h index 13b7b02e599a..6f9d04a85336 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -40,6 +40,7 @@ enum oom_constraint { CONSTRAINT_MEMCG, }; +extern void compare_swap_oom_score_adj(int old_val, int new_val); extern int test_set_oom_score_adj(int new_val); extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem, -- cgit v1.2.2 From bc3e53f682d93df677dbd5006a404722b3adfe18 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 31 Oct 2011 17:07:30 -0700 Subject: mm: distinguish between mlocked and pinned pages Some kernel components pin user space memory (infiniband and perf) (by increasing the page count) and account that memory as "mlocked". The difference between mlocking and pinning is: A. mlocked pages are marked with PG_mlocked and are exempt from swapping. Page migration may move them around though. They are kept on a special LRU list. B. Pinned pages cannot be moved because something needs to directly access physical memory. They may not be on any LRU list. I recently saw an mlockalled process where mm->locked_vm became bigger than the virtual size of the process (!) because some memory was accounted for twice: Once when the page was mlocked and once when the Infiniband layer increased the refcount because it needt to pin the RDMA memory. This patch introduces a separate counter for pinned pages and accounts them seperately. Signed-off-by: Christoph Lameter Cc: Mike Marciniszyn Cc: Roland Dreier Cc: Sean Hefty Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 6456624aa964..f3175830cc73 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -304,7 +304,7 @@ struct mm_struct { unsigned long hiwater_rss; /* High-watermark of RSS usage */ unsigned long hiwater_vm; /* High-water virtual memory usage */ - unsigned long total_vm, locked_vm, shared_vm, exec_vm; + unsigned long total_vm, locked_vm, pinned_vm, shared_vm, exec_vm; unsigned long stack_vm, reserved_vm, def_flags, nr_ptes; unsigned long start_code, end_code, start_data, end_data; unsigned long start_brk, brk, start_stack; -- cgit v1.2.2 From e10d59f2c3decaf22cc5d3de7040eba202bc2df3 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 31 Oct 2011 17:07:34 -0700 Subject: mm: add comments to explain mm_struct fields Add comments to explain the page statistics field in the mm_struct. [akpm@linux-foundation.org: add missing ;] Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index f3175830cc73..3e01a19a91e8 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -304,8 +304,15 @@ struct mm_struct { unsigned long hiwater_rss; /* High-watermark of RSS usage */ unsigned long hiwater_vm; /* High-water virtual memory usage */ - unsigned long total_vm, locked_vm, pinned_vm, shared_vm, exec_vm; - unsigned long stack_vm, reserved_vm, def_flags, nr_ptes; + unsigned long total_vm; /* Total pages mapped */ + unsigned long locked_vm; /* Pages that have PG_mlocked set */ + unsigned long pinned_vm; /* Refcount permanently increased */ + unsigned long shared_vm; /* Shared pages (files) */ + unsigned long exec_vm; /* VM_EXEC & ~VM_WRITE */ + unsigned long stack_vm; /* VM_GROWSUP/DOWN */ + unsigned long reserved_vm; /* VM_RESERVED|VM_IO pages */ + unsigned long def_flags; + unsigned long nr_ptes; /* Page table pages */ unsigned long start_code, end_code, start_data, end_data; unsigned long start_brk, brk, start_stack; unsigned long arg_start, arg_end, env_start, env_end; -- cgit v1.2.2 From ee72886d8ed5d9de3fa0ed3b99a7ca7702576a96 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 31 Oct 2011 17:07:38 -0700 Subject: mm: vmscan: do not writeback filesystem pages in direct reclaim Testing from the XFS folk revealed that there is still too much I/O from the end of the LRU in kswapd. Previously it was considered acceptable by VM people for a small number of pages to be written back from reclaim with testing generally showing about 0.3% of pages reclaimed were written back (higher if memory was low). That writing back a small number of pages is ok has been heavily disputed for quite some time and Dave Chinner explained it well; It doesn't have to be a very high number to be a problem. IO is orders of magnitude slower than the CPU time it takes to flush a page, so the cost of making a bad flush decision is very high. And single page writeback from the LRU is almost always a bad flush decision. To complicate matters, filesystems respond very differently to requests from reclaim according to Christoph Hellwig; xfs tries to write it back if the requester is kswapd ext4 ignores the request if it's a delayed allocation btrfs ignores the request As a result, each filesystem has different performance characteristics when under memory pressure and there are many pages being dirtied. In some cases, the request is ignored entirely so the VM cannot depend on the IO being dispatched. The objective of this series is to reduce writing of filesystem-backed pages from reclaim, play nicely with writeback that is already in progress and throttle reclaim appropriately when writeback pages are encountered. The assumption is that the flushers will always write pages faster than if reclaim issues the IO. A secondary goal is to avoid the problem whereby direct reclaim splices two potentially deep call stacks together. There is a potential new problem as reclaim has less control over how long before a page in a particularly zone or container is cleaned and direct reclaimers depend on kswapd or flusher threads to do the necessary work. However, as filesystems sometimes ignore direct reclaim requests already, it is not expected to be a serious issue. Patch 1 disables writeback of filesystem pages from direct reclaim entirely. Anonymous pages are still written. Patch 2 removes dead code in lumpy reclaim as it is no longer able to synchronously write pages. This hurts lumpy reclaim but there is an expectation that compaction is used for hugepage allocations these days and lumpy reclaim's days are numbered. Patches 3-4 add warnings to XFS and ext4 if called from direct reclaim. With patch 1, this "never happens" and is intended to catch regressions in this logic in the future. Patch 5 disables writeback of filesystem pages from kswapd unless the priority is raised to the point where kswapd is considered to be in trouble. Patch 6 throttles reclaimers if too many dirty pages are being encountered and the zones or backing devices are congested. Patch 7 invalidates dirty pages found at the end of the LRU so they are reclaimed quickly after being written back rather than waiting for a reclaimer to find them I consider this series to be orthogonal to the writeback work but it is worth noting that the writeback work affects the viability of patch 8 in particular. I tested this on ext4 and xfs using fs_mark, a simple writeback test based on dd and a micro benchmark that does a streaming write to a large mapping (exercises use-once LRU logic) followed by streaming writes to a mix of anonymous and file-backed mappings. The command line for fs_mark when botted with 512M looked something like ./fs_mark -d /tmp/fsmark-2676 -D 100 -N 150 -n 150 -L 25 -t 1 -S0 -s 10485760 The number of files was adjusted depending on the amount of available memory so that the files created was about 3xRAM. For multiple threads, the -d switch is specified multiple times. The test machine is x86-64 with an older generation of AMD processor with 4 cores. The underlying storage was 4 disks configured as RAID-0 as this was the best configuration of storage I had available. Swap is on a separate disk. Dirty ratio was tuned to 40% instead of the default of 20%. Testing was run with and without monitors to both verify that the patches were operating as expected and that any performance gain was real and not due to interference from monitors. Here is a summary of results based on testing XFS. 512M1P-xfs Files/s mean 32.69 ( 0.00%) 34.44 ( 5.08%) 512M1P-xfs Elapsed Time fsmark 51.41 48.29 512M1P-xfs Elapsed Time simple-wb 114.09 108.61 512M1P-xfs Elapsed Time mmap-strm 113.46 109.34 512M1P-xfs Kswapd efficiency fsmark 62% 63% 512M1P-xfs Kswapd efficiency simple-wb 56% 61% 512M1P-xfs Kswapd efficiency mmap-strm 44% 42% 512M-xfs Files/s mean 30.78 ( 0.00%) 35.94 (14.36%) 512M-xfs Elapsed Time fsmark 56.08 48.90 512M-xfs Elapsed Time simple-wb 112.22 98.13 512M-xfs Elapsed Time mmap-strm 219.15 196.67 512M-xfs Kswapd efficiency fsmark 54% 56% 512M-xfs Kswapd efficiency simple-wb 54% 55% 512M-xfs Kswapd efficiency mmap-strm 45% 44% 512M-4X-xfs Files/s mean 30.31 ( 0.00%) 33.33 ( 9.06%) 512M-4X-xfs Elapsed Time fsmark 63.26 55.88 512M-4X-xfs Elapsed Time simple-wb 100.90 90.25 512M-4X-xfs Elapsed Time mmap-strm 261.73 255.38 512M-4X-xfs Kswapd efficiency fsmark 49% 50% 512M-4X-xfs Kswapd efficiency simple-wb 54% 56% 512M-4X-xfs Kswapd efficiency mmap-strm 37% 36% 512M-16X-xfs Files/s mean 60.89 ( 0.00%) 65.22 ( 6.64%) 512M-16X-xfs Elapsed Time fsmark 67.47 58.25 512M-16X-xfs Elapsed Time simple-wb 103.22 90.89 512M-16X-xfs Elapsed Time mmap-strm 237.09 198.82 512M-16X-xfs Kswapd efficiency fsmark 45% 46% 512M-16X-xfs Kswapd efficiency simple-wb 53% 55% 512M-16X-xfs Kswapd efficiency mmap-strm 33% 33% Up until 512-4X, the FSmark improvements were statistically significant. For the 4X and 16X tests the results were within standard deviations but just barely. The time to completion for all tests is improved which is an important result. In general, kswapd efficiency is not affected by skipping dirty pages. 1024M1P-xfs Files/s mean 39.09 ( 0.00%) 41.15 ( 5.01%) 1024M1P-xfs Elapsed Time fsmark 84.14 80.41 1024M1P-xfs Elapsed Time simple-wb 210.77 184.78 1024M1P-xfs Elapsed Time mmap-strm 162.00 160.34 1024M1P-xfs Kswapd efficiency fsmark 69% 75% 1024M1P-xfs Kswapd efficiency simple-wb 71% 77% 1024M1P-xfs Kswapd efficiency mmap-strm 43% 44% 1024M-xfs Files/s mean 35.45 ( 0.00%) 37.00 ( 4.19%) 1024M-xfs Elapsed Time fsmark 94.59 91.00 1024M-xfs Elapsed Time simple-wb 229.84 195.08 1024M-xfs Elapsed Time mmap-strm 405.38 440.29 1024M-xfs Kswapd efficiency fsmark 79% 71% 1024M-xfs Kswapd efficiency simple-wb 74% 74% 1024M-xfs Kswapd efficiency mmap-strm 39% 42% 1024M-4X-xfs Files/s mean 32.63 ( 0.00%) 35.05 ( 6.90%) 1024M-4X-xfs Elapsed Time fsmark 103.33 97.74 1024M-4X-xfs Elapsed Time simple-wb 204.48 178.57 1024M-4X-xfs Elapsed Time mmap-strm 528.38 511.88 1024M-4X-xfs Kswapd efficiency fsmark 81% 70% 1024M-4X-xfs Kswapd efficiency simple-wb 73% 72% 1024M-4X-xfs Kswapd efficiency mmap-strm 39% 38% 1024M-16X-xfs Files/s mean 42.65 ( 0.00%) 42.97 ( 0.74%) 1024M-16X-xfs Elapsed Time fsmark 103.11 99.11 1024M-16X-xfs Elapsed Time simple-wb 200.83 178.24 1024M-16X-xfs Elapsed Time mmap-strm 397.35 459.82 1024M-16X-xfs Kswapd efficiency fsmark 84% 69% 1024M-16X-xfs Kswapd efficiency simple-wb 74% 73% 1024M-16X-xfs Kswapd efficiency mmap-strm 39% 40% All FSMark tests up to 16X had statistically significant improvements. For the most part, tests are completing faster with the exception of the streaming writes to a mixture of anonymous and file-backed mappings which were slower in two cases In the cases where the mmap-strm tests were slower, there was more swapping due to dirty pages being skipped. The number of additional pages swapped is almost identical to the fewer number of pages written from reclaim. In other words, roughly the same number of pages were reclaimed but swapping was slower. As the test is a bit unrealistic and stresses memory heavily, the small shift is acceptable. 4608M1P-xfs Files/s mean 29.75 ( 0.00%) 30.96 ( 3.91%) 4608M1P-xfs Elapsed Time fsmark 512.01 492.15 4608M1P-xfs Elapsed Time simple-wb 618.18 566.24 4608M1P-xfs Elapsed Time mmap-strm 488.05 465.07 4608M1P-xfs Kswapd efficiency fsmark 93% 86% 4608M1P-xfs Kswapd efficiency simple-wb 88% 84% 4608M1P-xfs Kswapd efficiency mmap-strm 46% 45% 4608M-xfs Files/s mean 27.60 ( 0.00%) 28.85 ( 4.33%) 4608M-xfs Elapsed Time fsmark 555.96 532.34 4608M-xfs Elapsed Time simple-wb 659.72 571.85 4608M-xfs Elapsed Time mmap-strm 1082.57 1146.38 4608M-xfs Kswapd efficiency fsmark 89% 91% 4608M-xfs Kswapd efficiency simple-wb 88% 82% 4608M-xfs Kswapd efficiency mmap-strm 48% 46% 4608M-4X-xfs Files/s mean 26.00 ( 0.00%) 27.47 ( 5.35%) 4608M-4X-xfs Elapsed Time fsmark 592.91 564.00 4608M-4X-xfs Elapsed Time simple-wb 616.65 575.07 4608M-4X-xfs Elapsed Time mmap-strm 1773.02 1631.53 4608M-4X-xfs Kswapd efficiency fsmark 90% 94% 4608M-4X-xfs Kswapd efficiency simple-wb 87% 82% 4608M-4X-xfs Kswapd efficiency mmap-strm 43% 43% 4608M-16X-xfs Files/s mean 26.07 ( 0.00%) 26.42 ( 1.32%) 4608M-16X-xfs Elapsed Time fsmark 602.69 585.78 4608M-16X-xfs Elapsed Time simple-wb 606.60 573.81 4608M-16X-xfs Elapsed Time mmap-strm 1549.75 1441.86 4608M-16X-xfs Kswapd efficiency fsmark 98% 98% 4608M-16X-xfs Kswapd efficiency simple-wb 88% 82% 4608M-16X-xfs Kswapd efficiency mmap-strm 44% 42% Unlike the other tests, the fsmark results are not statistically significant but the min and max times are both improved and for the most part, tests completed faster. There are other indications that this is an improvement as well. For example, in the vast majority of cases, there were fewer pages scanned by direct reclaim implying in many cases that stalls due to direct reclaim are reduced. KSwapd is scanning more due to skipping dirty pages which is unfortunate but the CPU usage is still acceptable In an earlier set of tests, I used blktrace and in almost all cases throughput throughout the entire test was higher. However, I ended up discarding those results as recording blktrace data was too heavy for my liking. On a laptop, I plugged in a USB stick and ran a similar tests of tests using it as backing storage. A desktop environment was running and for the entire duration of the tests, firefox and gnome terminal were launching and exiting to vaguely simulate a user. 1024M-xfs Files/s mean 0.41 ( 0.00%) 0.44 ( 6.82%) 1024M-xfs Elapsed Time fsmark 2053.52 1641.03 1024M-xfs Elapsed Time simple-wb 1229.53 768.05 1024M-xfs Elapsed Time mmap-strm 4126.44 4597.03 1024M-xfs Kswapd efficiency fsmark 84% 85% 1024M-xfs Kswapd efficiency simple-wb 92% 81% 1024M-xfs Kswapd efficiency mmap-strm 60% 51% 1024M-xfs Avg wait ms fsmark 5404.53 4473.87 1024M-xfs Avg wait ms simple-wb 2541.35 1453.54 1024M-xfs Avg wait ms mmap-strm 3400.25 3852.53 The mmap-strm results were hurt because firefox launching had a tendency to push the test out of memory. On the postive side, firefox launched marginally faster with the patches applied. Time to completion for many tests was faster but more importantly - the "Avg wait" time as measured by iostat was far lower implying the system would be more responsive. It was also the case that "Avg wait ms" on the root filesystem was lower. I tested it manually and while the system felt slightly more responsive while copying data to a USB stick, it was marginal enough that it could be my imagination. This patch: do not writeback filesystem pages in direct reclaim. When kswapd is failing to keep zones above the min watermark, a process will enter direct reclaim in the same manner kswapd does. If a dirty page is encountered during the scan, this page is written to backing storage using mapping->writepage. This causes two problems. First, it can result in very deep call stacks, particularly if the target storage or filesystem are complex. Some filesystems ignore write requests from direct reclaim as a result. The second is that a single-page flush is inefficient in terms of IO. While there is an expectation that the elevator will merge requests, this does not always happen. Quoting Christoph Hellwig; The elevator has a relatively small window it can operate on, and can never fix up a bad large scale writeback pattern. This patch prevents direct reclaim writing back filesystem pages by checking if current is kswapd. Anonymous pages are still written to swap as there is not the equivalent of a flusher thread for anonymous pages. If the dirty pages cannot be written back, they are placed back on the LRU lists. There is now a direct dependency on dirty page balancing to prevent too many pages in the system being dirtied which would prevent reclaim making forward progress. Signed-off-by: Mel Gorman Reviewed-by: Minchan Kim Cc: Dave Chinner Cc: Christoph Hellwig Cc: Johannes Weiner Cc: Wu Fengguang Cc: Jan Kara Cc: Rik van Riel Cc: Mel Gorman Cc: Alex Elder Cc: Theodore Ts'o Cc: Chris Mason Cc: Dave Hansen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index ec57779c5a57..2c41b2c1943b 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -100,6 +100,7 @@ enum zone_stat_item { NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_BOUNCE, NR_VMSCAN_WRITE, + NR_VMSCAN_WRITE_SKIP, NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */ NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */ -- cgit v1.2.2 From 49ea7eb65e7c5060807fb9312b1ad4c3eab82e2c Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 31 Oct 2011 17:07:59 -0700 Subject: mm: vmscan: immediately reclaim end-of-LRU dirty pages when writeback completes When direct reclaim encounters a dirty page, it gets recycled around the LRU for another cycle. This patch marks the page PageReclaim similar to deactivate_page() so that the page gets reclaimed almost immediately after the page gets cleaned. This is to avoid reclaiming clean pages that are younger than a dirty page encountered at the end of the LRU that might have been something like a use-once page. Signed-off-by: Mel Gorman Acked-by: Johannes Weiner Cc: Dave Chinner Cc: Christoph Hellwig Cc: Wu Fengguang Cc: Jan Kara Cc: Minchan Kim Cc: Rik van Riel Cc: Mel Gorman Cc: Alex Elder Cc: Theodore Ts'o Cc: Chris Mason Cc: Dave Hansen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 2c41b2c1943b..188cb2ffe8db 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -100,7 +100,7 @@ enum zone_stat_item { NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_BOUNCE, NR_VMSCAN_WRITE, - NR_VMSCAN_WRITE_SKIP, + NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */ NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */ NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */ -- cgit v1.2.2 From 798248206b59acc6e1238c778281419c041891a7 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Mon, 31 Oct 2011 17:08:07 -0700 Subject: lib/string.c: introduce memchr_inv() memchr_inv() is mainly used to check whether the whole buffer is filled with just a specified byte. The function name and prototype are stolen from logfs and the implementation is from SLUB. Signed-off-by: Akinobu Mita Acked-by: Christoph Lameter Acked-by: Pekka Enberg Cc: Matt Mackall Acked-by: Joern Engel Cc: Marcin Slusarz Cc: Eric Dumazet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/string.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/string.h b/include/linux/string.h index a176db2f2c85..e033564f10ba 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -114,6 +114,7 @@ extern int memcmp(const void *,const void *,__kernel_size_t); #ifndef __HAVE_ARCH_MEMCHR extern void * memchr(const void *,int,__kernel_size_t); #endif +void *memchr_inv(const void *s, int c, size_t n); extern char *kstrdup(const char *s, gfp_t gfp); extern char *kstrndup(const char *s, size_t len, gfp_t gfp); -- cgit v1.2.2 From f5252e009d5b87071a919221e4f6624184005368 Mon Sep 17 00:00:00 2001 From: Mitsuo Hayasaka Date: Mon, 31 Oct 2011 17:08:13 -0700 Subject: mm: avoid null pointer access in vm_struct via /proc/vmallocinfo The /proc/vmallocinfo shows information about vmalloc allocations in vmlist that is a linklist of vm_struct. It, however, may access pages field of vm_struct where a page was not allocated. This results in a null pointer access and leads to a kernel panic. Why this happens: In __vmalloc_node_range() called from vmalloc(), newly allocated vm_struct is added to vmlist at __get_vm_area_node() and then, some fields of vm_struct such as nr_pages and pages are set at __vmalloc_area_node(). In other words, it is added to vmlist before it is fully initialized. At the same time, when the /proc/vmallocinfo is read, it accesses the pages field of vm_struct according to the nr_pages field at show_numa_info(). Thus, a null pointer access happens. The patch adds the newly allocated vm_struct to the vmlist *after* it is fully initialized. So, it can avoid accessing the pages field with unallocated page when show_numa_info() is called. Signed-off-by: Mitsuo Hayasaka Cc: Andrew Morton Cc: David Rientjes Cc: Namhyung Kim Cc: "Paul E. McKenney" Cc: Jeremy Fitzhardinge Cc: Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmalloc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 9332e52ea8c2..687fb11e2010 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -13,6 +13,7 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */ #define VM_MAP 0x00000004 /* vmap()ed pages */ #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ +#define VM_UNLIST 0x00000020 /* vm_struct is not listed in vmlist */ /* bits [20..32] reserved for arch specific ioremap internals */ /* -- cgit v1.2.2 From 0a93ebef698b08ed04af0d7d913bab8aedfdc253 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 31 Oct 2011 17:08:16 -0700 Subject: memblock: add memblock_start_of_DRAM() SPARC32 require access to the start address. Add a new helper memblock_start_of_DRAM() to give access to the address of the first memblock - which contains the lowest address. The awkward name was chosen to match the already present memblock_end_of_DRAM(). Signed-off-by: Sam Ravnborg Cc: "David S. Miller" Cc: Yinghai Lu Acked-by: Tejun Heo Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memblock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 7525e38c434d..e6b843e16e81 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -80,6 +80,7 @@ extern phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr); extern phys_addr_t memblock_phys_mem_size(void); +extern phys_addr_t memblock_start_of_DRAM(void); extern phys_addr_t memblock_end_of_DRAM(void); extern void memblock_enforce_memory_limit(phys_addr_t memory_limit); extern int memblock_is_memory(phys_addr_t addr); -- cgit v1.2.2 From 37a1c49a91ad55f917a399ef2174b5ebda4283f9 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Mon, 31 Oct 2011 17:08:30 -0700 Subject: thp: mremap support and TLB optimization This adds THP support to mremap (decreases the number of split_huge_page() calls). Here are also some benchmarks with a proggy like this: === #define _GNU_SOURCE #include #include #include #include #include #define SIZE (5UL*1024*1024*1024) int main() { static struct timeval oldstamp, newstamp; long diffsec; char *p, *p2, *p3, *p4; if (posix_memalign((void **)&p, 2*1024*1024, SIZE)) perror("memalign"), exit(1); if (posix_memalign((void **)&p2, 2*1024*1024, SIZE)) perror("memalign"), exit(1); if (posix_memalign((void **)&p3, 2*1024*1024, 4096)) perror("memalign"), exit(1); memset(p, 0xff, SIZE); memset(p2, 0xff, SIZE); memset(p3, 0x77, 4096); gettimeofday(&oldstamp, NULL); p4 = mremap(p, SIZE, SIZE, MREMAP_FIXED|MREMAP_MAYMOVE, p3); gettimeofday(&newstamp, NULL); diffsec = newstamp.tv_sec - oldstamp.tv_sec; diffsec = newstamp.tv_usec - oldstamp.tv_usec + 1000000 * diffsec; printf("usec %ld\n", diffsec); if (p == MAP_FAILED || p4 != p3) //if (p == MAP_FAILED) perror("mremap"), exit(1); if (memcmp(p4, p2, SIZE)) printf("mremap bug\n"), exit(1); printf("ok\n"); return 0; } === THP on Performance counter stats for './largepage13' (3 runs): 69195836 dTLB-loads ( +- 3.546% ) (scaled from 50.30%) 60708 dTLB-load-misses ( +- 11.776% ) (scaled from 52.62%) 676266476 dTLB-stores ( +- 5.654% ) (scaled from 69.54%) 29856 dTLB-store-misses ( +- 4.081% ) (scaled from 89.22%) 1055848782 iTLB-loads ( +- 4.526% ) (scaled from 80.18%) 8689 iTLB-load-misses ( +- 2.987% ) (scaled from 58.20%) 7.314454164 seconds time elapsed ( +- 0.023% ) THP off Performance counter stats for './largepage13' (3 runs): 1967379311 dTLB-loads ( +- 0.506% ) (scaled from 60.59%) 9238687 dTLB-load-misses ( +- 22.547% ) (scaled from 61.87%) 2014239444 dTLB-stores ( +- 0.692% ) (scaled from 60.40%) 3312335 dTLB-store-misses ( +- 7.304% ) (scaled from 67.60%) 6764372065 iTLB-loads ( +- 0.925% ) (scaled from 79.00%) 8202 iTLB-load-misses ( +- 0.475% ) (scaled from 70.55%) 9.693655243 seconds time elapsed ( +- 0.069% ) grep thp /proc/vmstat thp_fault_alloc 35849 thp_fault_fallback 0 thp_collapse_alloc 3 thp_collapse_alloc_failed 0 thp_split 0 thp_split 0 confirms no thp split despite plenty of hugepages allocated. The measurement of only the mremap time (so excluding the 3 long memset and final long 10GB memory accessing memcmp): THP on usec 14824 usec 14862 usec 14859 THP off usec 256416 usec 255981 usec 255847 With an older kernel without the mremap optimizations (the below patch optimizes the non THP version too). THP on usec 392107 usec 390237 usec 404124 THP off usec 444294 usec 445237 usec 445820 I guess with a threaded program that sends more IPI on large SMP it'd create an even larger difference. All debug options are off except DEBUG_VM to avoid skewing the results. The only problem for native 2M mremap like it happens above both the source and destination address must be 2M aligned or the hugepmd can't be moved without a split but that is an hardware limitation. [akpm@linux-foundation.org: coding-style nitpicking] Signed-off-by: Andrea Arcangeli Acked-by: Johannes Weiner Acked-by: Mel Gorman Acked-by: Rik van Riel Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 48c32ebf65a7..a9ace9c32507 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -22,6 +22,11 @@ extern int zap_huge_pmd(struct mmu_gather *tlb, extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long end, unsigned char *vec); +extern int move_huge_pmd(struct vm_area_struct *vma, + struct vm_area_struct *new_vma, + unsigned long old_addr, + unsigned long new_addr, unsigned long old_end, + pmd_t *old_pmd, pmd_t *new_pmd); extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, pgprot_t newprot); -- cgit v1.2.2 From 3ee9a4f086716d792219c021e8509f91165a4128 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 31 Oct 2011 17:08:35 -0700 Subject: mm: neaten warn_alloc_failed Add __attribute__((format (printf...) to the function to validate format and arguments. Use vsprintf extension %pV to avoid any possible message interleaving. Coalesce format string. Convert printks/pr_warning to pr_warn. [akpm@linux-foundation.org: use the __printf() macro] Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 7438071b44aa..3b3e3b8bb706 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1334,7 +1334,8 @@ extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); extern int after_bootmem; -extern void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...); +extern __printf(3, 4) +void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...); extern void setup_per_cpu_pageset(void); -- cgit v1.2.2 From 09f363c7363eb10cfb4b82094bd7064e5608258b Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Mon, 31 Oct 2011 17:08:57 -0700 Subject: vmscan: fix shrinker callback bug in fs/super.c The callback must not return -1 when nr_to_scan is zero. Fix the bug in fs/super.c and add this requirement to the callback specification. Signed-off-by: Mikulas Patocka Cc: Dave Chinner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/shrinker.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h index 790651b4e5ba..a83833a1f7a2 100644 --- a/include/linux/shrinker.h +++ b/include/linux/shrinker.h @@ -20,6 +20,7 @@ struct shrink_control { * 'nr_to_scan' entries and attempt to free them up. It should return * the number of objects which remain in the cache. If it returns -1, it means * it cannot do any scanning at this time (eg. there is a risk of deadlock). + * The callback must not return -1 if nr_to_scan is zero. * * The 'gfpmask' refers to the allocation we are currently trying to * fulfil. -- cgit v1.2.2 From d43a87e68e9e71d2987a29cc239acec4e8f410c9 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Mon, 31 Oct 2011 17:09:08 -0700 Subject: mm: compaction: make compact_zone_order() static There's no compact_zone_order() user outside file scope, so make it static. Signed-off-by: Kyungmin Park Acked-by: David Rientjes Reviewed-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index cc9f7a428649..bb2bbdbe5464 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -24,8 +24,6 @@ extern unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask, bool sync); extern unsigned long compaction_suitable(struct zone *zone, int order); -extern unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync); /* Do not skip compaction more than 64 times */ #define COMPACT_MAX_DEFER_SHIFT 6 @@ -69,12 +67,6 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order) return COMPACT_SKIPPED; } -static inline unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync) -{ - return COMPACT_CONTINUE; -} - static inline void defer_compaction(struct zone *zone) { } -- cgit v1.2.2 From ec400c9fab99d16a491cea17d27d0c6a5780b97c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 31 Oct 2011 17:11:07 -0700 Subject: lis3lv02d: make regulator API usage unconditional MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The regulator API contains a range of features for stubbing itself out when not in use and for transparently restricting the actual effect of regulator API calls where they can't be supported on a particular system so that drivers don't need to individually implement this. Simplify the driver slightly by making use of this idiom. The only in tree user is ecovec24 which does not use the regulator API. Signed-off-by: Mark Brown Cc: Éric Piel Cc: Ilkka Koskinen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/lis3lv02d.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lis3lv02d.h b/include/linux/lis3lv02d.h index d4292c8431e0..f1664c636af0 100644 --- a/include/linux/lis3lv02d.h +++ b/include/linux/lis3lv02d.h @@ -113,7 +113,6 @@ struct lis3lv02d_platform_data { s8 axis_x; s8 axis_y; s8 axis_z; -#define LIS3_USE_REGULATOR_CTRL 0x01 #define LIS3_USE_BLOCK_READ 0x02 u16 driver_features; int default_rate; -- cgit v1.2.2 From b9075fa968a0a4347aef35e235e2995c0e57dddd Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 31 Oct 2011 17:11:33 -0700 Subject: treewide: use __printf not __attribute__((format(printf,...))) Standardize the style for compiler based printf format verification. Standardized the location of __printf too. Done via script and a little typing. $ grep -rPl --include=*.[ch] -w "__attribute__" * | \ grep -vP "^(tools|scripts|include/linux/compiler-gcc.h)" | \ xargs perl -n -i -e 'local $/; while (<>) { s/\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf\s*,\s*(.+)\s*,\s*(.+)\s*\)\s*\)\s*\)/__printf($1, $2)/g ; print; }' [akpm@linux-foundation.org: revert arch bits] Signed-off-by: Joe Perches Cc: "Kirill A. Shutemov" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/audit.h | 11 ++--- include/linux/blktrace_api.h | 2 +- include/linux/device.h | 110 ++++++++++++++++++++---------------------- include/linux/dynamic_debug.h | 19 ++++---- include/linux/ext3_fs.h | 16 +++--- include/linux/fs.h | 4 +- include/linux/fscache-cache.h | 8 +-- include/linux/gameport.h | 8 +-- include/linux/kallsyms.h | 5 +- include/linux/kdb.h | 9 ++-- include/linux/kernel.h | 44 ++++++++--------- include/linux/kexec.h | 4 +- include/linux/kmod.h | 4 +- include/linux/kobject.h | 26 +++++----- include/linux/kthread.h | 4 +- include/linux/libata.h | 18 +++---- include/linux/mmiotrace.h | 8 +-- include/linux/netdevice.h | 34 ++++++------- include/linux/printk.h | 12 ++--- include/linux/quotaops.h | 2 +- include/linux/seq_file.h | 3 +- include/linux/trace_seq.h | 8 +-- 22 files changed, 167 insertions(+), 192 deletions(-) (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index 0c8006129fb2..2f81c6f3b630 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -584,14 +584,13 @@ extern int audit_signals; #ifdef CONFIG_AUDIT /* These are defined in audit.c */ /* Public API */ -extern void audit_log(struct audit_context *ctx, gfp_t gfp_mask, - int type, const char *fmt, ...) - __attribute__((format(printf,4,5))); +extern __printf(4, 5) +void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type, + const char *fmt, ...); extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type); -extern void audit_log_format(struct audit_buffer *ab, - const char *fmt, ...) - __attribute__((format(printf,2,3))); +extern __printf(2, 3) +void audit_log_format(struct audit_buffer *ab, const char *fmt, ...); extern void audit_log_end(struct audit_buffer *ab); extern int audit_string_contains_control(const char *string, size_t len); diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 8e9e4bc6d73b..4d1a0748eaf8 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -170,7 +170,7 @@ extern void blk_trace_shutdown(struct request_queue *); extern int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, struct block_device *bdev, struct blk_user_trace_setup *buts); -extern __attribute__((format(printf, 2, 3))) +extern __printf(2, 3) void __trace_note_message(struct blk_trace *, const char *fmt, ...); /** diff --git a/include/linux/device.h b/include/linux/device.h index 85e78fc7d7fd..e88abeecfadf 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -622,8 +622,8 @@ static inline const char *dev_name(const struct device *dev) return kobject_name(&dev->kobj); } -extern int dev_set_name(struct device *dev, const char *name, ...) - __attribute__((format(printf, 2, 3))); +extern __printf(2, 3) +int dev_set_name(struct device *dev, const char *name, ...); #ifdef CONFIG_NUMA static inline int dev_to_node(struct device *dev) @@ -753,10 +753,10 @@ extern struct device *device_create_vargs(struct class *cls, void *drvdata, const char *fmt, va_list vargs); -extern struct device *device_create(struct class *cls, struct device *parent, - dev_t devt, void *drvdata, - const char *fmt, ...) - __attribute__((format(printf, 5, 6))); +extern __printf(5, 6) +struct device *device_create(struct class *cls, struct device *parent, + dev_t devt, void *drvdata, + const char *fmt, ...); extern void device_destroy(struct class *cls, dev_t devt); /* @@ -800,64 +800,56 @@ extern const char *dev_driver_string(const struct device *dev); extern int __dev_printk(const char *level, const struct device *dev, struct va_format *vaf); -extern int dev_printk(const char *level, const struct device *dev, - const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); -extern int dev_emerg(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int dev_alert(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int dev_crit(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int dev_err(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int dev_warn(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int dev_notice(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int _dev_info(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(3, 4) +int dev_printk(const char *level, const struct device *dev, + const char *fmt, ...) + ; +extern __printf(2, 3) +int dev_emerg(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int dev_alert(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int dev_crit(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int dev_err(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int dev_warn(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int dev_notice(const struct device *dev, const char *fmt, ...); +extern __printf(2, 3) +int _dev_info(const struct device *dev, const char *fmt, ...); #else static inline int __dev_printk(const char *level, const struct device *dev, struct va_format *vaf) - { return 0; } -static inline int dev_printk(const char *level, const struct device *dev, - const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); -static inline int dev_printk(const char *level, const struct device *dev, - const char *fmt, ...) - { return 0; } - -static inline int dev_emerg(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_emerg(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int dev_crit(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_crit(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int dev_alert(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_alert(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int dev_err(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_err(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int dev_warn(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_warn(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int dev_notice(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int dev_notice(const struct device *dev, const char *fmt, ...) - { return 0; } -static inline int _dev_info(const struct device *dev, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -static inline int _dev_info(const struct device *dev, const char *fmt, ...) - { return 0; } +{ return 0; } +static inline __printf(3, 4) +int dev_printk(const char *level, const struct device *dev, + const char *fmt, ...) +{ return 0; } + +static inline __printf(2, 3) +int dev_emerg(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int dev_crit(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int dev_alert(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int dev_err(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int dev_warn(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int dev_notice(const struct device *dev, const char *fmt, ...) +{ return 0; } +static inline __printf(2, 3) +int _dev_info(const struct device *dev, const char *fmt, ...) +{ return 0; } #endif diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 13aae8087b56..0564e3c39882 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -37,22 +37,21 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n, #if defined(CONFIG_DYNAMIC_DEBUG) extern int ddebug_remove_module(const char *mod_name); -extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) +int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...); struct device; -extern int __dynamic_dev_dbg(struct _ddebug *descriptor, - const struct device *dev, - const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +int __dynamic_dev_dbg(struct _ddebug *descriptor, const struct device *dev, + const char *fmt, ...); struct net_device; -extern int __dynamic_netdev_dbg(struct _ddebug *descriptor, - const struct net_device *dev, - const char *fmt, ...) - __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +int __dynamic_netdev_dbg(struct _ddebug *descriptor, + const struct net_device *dev, + const char *fmt, ...); #define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt) \ static struct _ddebug __used __aligned(8) \ diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 67a803aee619..81965cce6bfa 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -937,15 +937,15 @@ extern int ext3_group_extend(struct super_block *sb, ext3_fsblk_t n_blocks_count); /* super.c */ -extern void ext3_error (struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +void ext3_error(struct super_block *, const char *, const char *, ...); extern void __ext3_std_error (struct super_block *, const char *, int); -extern void ext3_abort (struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); -extern void ext3_warning (struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); -extern void ext3_msg(struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +void ext3_abort(struct super_block *, const char *, const char *, ...); +extern __printf(3, 4) +void ext3_warning(struct super_block *, const char *, const char *, ...); +extern __printf(3, 4) +void ext3_msg(struct super_block *, const char *, const char *, ...); extern void ext3_update_dynamic_rev (struct super_block *sb); #define ext3_std_error(sb, errno) \ diff --git a/include/linux/fs.h b/include/linux/fs.h index 87b4c6b9692d..7a049fd2aa4c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2635,8 +2635,8 @@ static const struct file_operations __fops = { \ .llseek = generic_file_llseek, \ }; -static inline void __attribute__((format(printf, 1, 2))) -__simple_attr_check_format(const char *fmt, ...) +static inline __printf(1, 2) +void __simple_attr_check_format(const char *fmt, ...) { /* don't do anything, just let the compiler check the arguments; */ } diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index af095b54502e..ce31408b1e47 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -492,10 +492,10 @@ static inline void fscache_end_io(struct fscache_retrieval *op, /* * out-of-line cache backend functions */ -extern void fscache_init_cache(struct fscache_cache *cache, - const struct fscache_cache_ops *ops, - const char *idfmt, - ...) __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +void fscache_init_cache(struct fscache_cache *cache, + const struct fscache_cache_ops *ops, + const char *idfmt, ...); extern int fscache_add_cache(struct fscache_cache *cache, struct fscache_object *fsdef, diff --git a/include/linux/gameport.h b/include/linux/gameport.h index b65a6f472775..069ee4139105 100644 --- a/include/linux/gameport.h +++ b/include/linux/gameport.h @@ -78,8 +78,8 @@ static inline void gameport_register_port(struct gameport *gameport) void gameport_unregister_port(struct gameport *gameport); -void gameport_set_phys(struct gameport *gameport, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +__printf(2, 3) +void gameport_set_phys(struct gameport *gameport, const char *fmt, ...); #else @@ -93,8 +93,8 @@ static inline void gameport_unregister_port(struct gameport *gameport) return; } -static inline void gameport_set_phys(struct gameport *gameport, - const char *fmt, ...) +static inline __printf(2, 3) +void gameport_set_phys(struct gameport *gameport, const char *fmt, ...) { return; } diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index 0df513b7a9f8..387571959dd9 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -101,9 +101,8 @@ static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, u #endif /*CONFIG_KALLSYMS*/ /* This macro allows us to keep printk typechecking */ -static void __check_printsym_format(const char *fmt, ...) -__attribute__((format(printf,1,2))); -static inline void __check_printsym_format(const char *fmt, ...) +static __printf(1, 2) +void __check_printsym_format(const char *fmt, ...) { } diff --git a/include/linux/kdb.h b/include/linux/kdb.h index 529d9a0c75a5..064725854db8 100644 --- a/include/linux/kdb.h +++ b/include/linux/kdb.h @@ -114,12 +114,9 @@ typedef enum { } kdb_reason_t; extern int kdb_trap_printk; -extern int vkdb_printf(const char *fmt, va_list args) - __attribute__ ((format (printf, 1, 0))); -extern int kdb_printf(const char *, ...) - __attribute__ ((format (printf, 1, 2))); -typedef int (*kdb_printf_t)(const char *, ...) - __attribute__ ((format (printf, 1, 2))); +extern __printf(1, 0) int vkdb_printf(const char *fmt, va_list args); +extern __printf(1, 2) int kdb_printf(const char *, ...); +typedef __printf(1, 2) int (*kdb_printf_t)(const char *, ...); extern void kdb_init(int level); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 8eefcf7e95eb..e40c950e1d62 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -296,20 +296,18 @@ extern long long simple_strtoll(const char *,char **,unsigned int); #define strict_strtoull kstrtoull #define strict_strtoll kstrtoll -extern int sprintf(char * buf, const char * fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int vsprintf(char *buf, const char *, va_list) - __attribute__ ((format (printf, 2, 0))); -extern int snprintf(char * buf, size_t size, const char * fmt, ...) - __attribute__ ((format (printf, 3, 4))); -extern int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) - __attribute__ ((format (printf, 3, 0))); -extern int scnprintf(char * buf, size_t size, const char * fmt, ...) - __attribute__ ((format (printf, 3, 4))); -extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) - __attribute__ ((format (printf, 3, 0))); -extern char *kasprintf(gfp_t gfp, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...); +extern __printf(2, 0) int vsprintf(char *buf, const char *, va_list); +extern __printf(3, 4) +int snprintf(char *buf, size_t size, const char *fmt, ...); +extern __printf(3, 0) +int vsnprintf(char *buf, size_t size, const char *fmt, va_list args); +extern __printf(3, 4) +int scnprintf(char *buf, size_t size, const char *fmt, ...); +extern __printf(3, 0) +int vscnprintf(char *buf, size_t size, const char *fmt, va_list args); +extern __printf(2, 3) +char *kasprintf(gfp_t gfp, const char *fmt, ...); extern char *kvasprintf(gfp_t gfp, const char *fmt, va_list args); extern int sscanf(const char *, const char *, ...) @@ -427,8 +425,8 @@ extern void tracing_start(void); extern void tracing_stop(void); extern void ftrace_off_permanent(void); -static inline void __attribute__ ((format (printf, 1, 2))) -____trace_printk_check_format(const char *fmt, ...) +static inline __printf(1, 2) +void ____trace_printk_check_format(const char *fmt, ...) { } #define __trace_printk_check_format(fmt, args...) \ @@ -467,13 +465,11 @@ do { \ __trace_printk(_THIS_IP_, fmt, ##args); \ } while (0) -extern int -__trace_bprintk(unsigned long ip, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) +int __trace_bprintk(unsigned long ip, const char *fmt, ...); -extern int -__trace_printk(unsigned long ip, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) +int __trace_printk(unsigned long ip, const char *fmt, ...); extern void trace_dump_stack(void); @@ -502,8 +498,8 @@ __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap); extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode); #else -static inline int -trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); +static inline __printf(1, 2) +int trace_printk(const char *fmt, ...); static inline void tracing_start(void) { } static inline void tracing_stop(void) { } diff --git a/include/linux/kexec.h b/include/linux/kexec.h index c2478a342cd7..8944ebe7963e 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -130,8 +130,8 @@ int kexec_should_crash(struct task_struct *); void crash_save_cpu(struct pt_regs *regs, int cpu); void crash_save_vmcoreinfo(void); void arch_crash_save_vmcoreinfo(void); -void vmcoreinfo_append_str(const char *fmt, ...) - __attribute__ ((format (printf, 1, 2))); +__printf(1, 2) +void vmcoreinfo_append_str(const char *fmt, ...); unsigned long paddr_vmcoreinfo_note(void); #define VMCOREINFO_OSRELEASE(value) \ diff --git a/include/linux/kmod.h b/include/linux/kmod.h index 0da38cf7db7b..b16f65390734 100644 --- a/include/linux/kmod.h +++ b/include/linux/kmod.h @@ -32,8 +32,8 @@ extern char modprobe_path[]; /* for sysctl */ /* modprobe exit status on success, -ve on error. Return value * usually useless though. */ -extern int __request_module(bool wait, const char *name, ...) \ - __attribute__((format(printf, 2, 3))); +extern __printf(2, 3) +int __request_module(bool wait, const char *name, ...); #define request_module(mod...) __request_module(true, mod) #define request_module_nowait(mod...) __request_module(false, mod) #define try_then_request_module(x, mod...) \ diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 668729cc0fe9..ad81e1c51487 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -72,8 +72,8 @@ struct kobject { unsigned int uevent_suppress:1; }; -extern int kobject_set_name(struct kobject *kobj, const char *name, ...) - __attribute__((format(printf, 2, 3))); +extern __printf(2, 3) +int kobject_set_name(struct kobject *kobj, const char *name, ...); extern int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list vargs); @@ -83,15 +83,13 @@ static inline const char *kobject_name(const struct kobject *kobj) } extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype); -extern int __must_check kobject_add(struct kobject *kobj, - struct kobject *parent, - const char *fmt, ...) - __attribute__((format(printf, 3, 4))); -extern int __must_check kobject_init_and_add(struct kobject *kobj, - struct kobj_type *ktype, - struct kobject *parent, - const char *fmt, ...) - __attribute__((format(printf, 4, 5))); +extern __printf(3, 4) __must_check +int kobject_add(struct kobject *kobj, struct kobject *parent, + const char *fmt, ...); +extern __printf(4, 5) __must_check +int kobject_init_and_add(struct kobject *kobj, + struct kobj_type *ktype, struct kobject *parent, + const char *fmt, ...); extern void kobject_del(struct kobject *kobj); @@ -212,8 +210,8 @@ int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); -int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) - __attribute__((format (printf, 2, 3))); +__printf(2, 3) +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...); int kobject_action_type(const char *buf, size_t count, enum kobject_action *type); @@ -226,7 +224,7 @@ static inline int kobject_uevent_env(struct kobject *kobj, char *envp[]) { return 0; } -static inline __attribute__((format(printf, 2, 3))) +static inline __printf(2, 3) int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { return 0; } diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 1e923e5e88e8..5cac19b3a266 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -4,11 +4,11 @@ #include #include +__printf(4, 5) struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), void *data, int node, - const char namefmt[], ...) - __attribute__((format(printf, 4, 5))); + const char namefmt[], ...); #define kthread_create(threadfn, data, namefmt, arg...) \ kthread_create_on_node(threadfn, data, -1, namefmt, ##arg) diff --git a/include/linux/libata.h b/include/linux/libata.h index 23fa829bf7a3..cafc09a64fe4 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1256,13 +1256,13 @@ static inline int sata_srst_pmp(struct ata_link *link) /* * printk helpers */ -__attribute__((format (printf, 3, 4))) +__printf(3, 4) int ata_port_printk(const struct ata_port *ap, const char *level, const char *fmt, ...); -__attribute__((format (printf, 3, 4))) +__printf(3, 4) int ata_link_printk(const struct ata_link *link, const char *level, const char *fmt, ...); -__attribute__((format (printf, 3, 4))) +__printf(3, 4) int ata_dev_printk(const struct ata_device *dev, const char *level, const char *fmt, ...); @@ -1304,10 +1304,10 @@ void ata_print_version(const struct device *dev, const char *version); /* * ata_eh_info helpers */ -extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) +void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); +extern __printf(2, 3) +void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...); extern void ata_ehi_clear_desc(struct ata_eh_info *ehi); static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) @@ -1321,8 +1321,8 @@ static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi) /* * port description helpers */ -extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(2, 3) +void ata_port_desc(struct ata_port *ap, const char *fmt, ...); #ifdef CONFIG_PCI extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, const char *name); diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h index 97491f78b08c..c5d52780d6a0 100644 --- a/include/linux/mmiotrace.h +++ b/include/linux/mmiotrace.h @@ -49,8 +49,7 @@ extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size, extern void mmiotrace_iounmap(volatile void __iomem *addr); /* For anyone to insert markers. Remember trailing newline. */ -extern int mmiotrace_printk(const char *fmt, ...) - __attribute__ ((format (printf, 1, 2))); +extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...); #else /* !CONFIG_MMIOTRACE: */ static inline int is_kmmio_active(void) { @@ -71,10 +70,7 @@ static inline void mmiotrace_iounmap(volatile void __iomem *addr) { } -static inline int mmiotrace_printk(const char *fmt, ...) - __attribute__ ((format (printf, 1, 0))); - -static inline int mmiotrace_printk(const char *fmt, ...) +static inline __printf(1, 2) int mmiotrace_printk(const char *fmt, ...) { return 0; } diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index df1c836e6948..cbeb5867cff7 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2622,23 +2622,23 @@ static inline const char *netdev_name(const struct net_device *dev) extern int __netdev_printk(const char *level, const struct net_device *dev, struct va_format *vaf); -extern int netdev_printk(const char *level, const struct net_device *dev, - const char *format, ...) - __attribute__ ((format (printf, 3, 4))); -extern int netdev_emerg(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_alert(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_crit(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_err(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_warn(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_notice(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); -extern int netdev_info(const struct net_device *dev, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); +extern __printf(3, 4) +int netdev_printk(const char *level, const struct net_device *dev, + const char *format, ...); +extern __printf(2, 3) +int netdev_emerg(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_alert(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_crit(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_err(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_warn(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_notice(const struct net_device *dev, const char *format, ...); +extern __printf(2, 3) +int netdev_info(const struct net_device *dev, const char *format, ...); #define MODULE_ALIAS_NETDEV(device) \ MODULE_ALIAS("netdev-" device) diff --git a/include/linux/printk.h b/include/linux/printk.h index 0101d55d9651..f0e22f75143f 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -82,22 +82,22 @@ struct va_format { * Dummy printk for disabled debugging statements to use whilst maintaining * gcc's format and side-effect checking. */ -static inline __attribute__ ((format (printf, 1, 2))) +static inline __printf(1, 2) int no_printk(const char *fmt, ...) { return 0; } -extern asmlinkage __attribute__ ((format (printf, 1, 2))) +extern asmlinkage __printf(1, 2) void early_printk(const char *fmt, ...); extern int printk_needs_cpu(int cpu); extern void printk_tick(void); #ifdef CONFIG_PRINTK -asmlinkage __attribute__ ((format (printf, 1, 0))) +asmlinkage __printf(1, 0) int vprintk(const char *fmt, va_list args); -asmlinkage __attribute__ ((format (printf, 1, 2))) __cold +asmlinkage __printf(1, 2) __cold int printk(const char *fmt, ...); /* @@ -117,12 +117,12 @@ extern int kptr_restrict; void log_buf_kexec_setup(void); void __init setup_log_buf(int early); #else -static inline __attribute__ ((format (printf, 1, 0))) +static inline __printf(1, 0) int vprintk(const char *s, va_list args) { return 0; } -static inline __attribute__ ((format (printf, 1, 2))) __cold +static inline __printf(1, 2) __cold int printk(const char *s, ...) { return 0; diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 26f9e3612e0f..d93f95e6177c 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -31,7 +31,7 @@ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) #define quota_error(sb, fmt, args...) \ __quota_error((sb), __func__, fmt , ## args) -extern __attribute__((format (printf, 3, 4))) +extern __printf(3, 4) void __quota_error(struct super_block *sb, const char *func, const char *fmt, ...); diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h index be720cd2038d..0b69a4684216 100644 --- a/include/linux/seq_file.h +++ b/include/linux/seq_file.h @@ -84,8 +84,7 @@ int seq_putc(struct seq_file *m, char c); int seq_puts(struct seq_file *m, const char *s); int seq_write(struct seq_file *seq, const void *data, size_t len); -int seq_printf(struct seq_file *, const char *, ...) - __attribute__ ((format (printf,2,3))); +__printf(2, 3) int seq_printf(struct seq_file *, const char *, ...); int seq_path(struct seq_file *, struct path *, char *); int seq_dentry(struct seq_file *, struct dentry *, char *); diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h index 5cf397ceb726..7dadc3df0c77 100644 --- a/include/linux/trace_seq.h +++ b/include/linux/trace_seq.h @@ -29,10 +29,10 @@ trace_seq_init(struct trace_seq *s) * Currently only defined when tracing is enabled. */ #ifdef CONFIG_TRACING -extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) - __attribute__ ((format (printf, 2, 3))); -extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) - __attribute__ ((format (printf, 2, 0))); +extern __printf(2, 3) +int trace_seq_printf(struct trace_seq *s, const char *fmt, ...); +extern __printf(2, 0) +int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args); extern int trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary); extern int trace_print_seq(struct seq_file *m, struct trace_seq *s); -- cgit v1.2.2 From 0556dc340e5159cdff925a5ab7f3a72f49745661 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 31 Oct 2011 17:11:48 -0700 Subject: backlight: fix broken regulator API usage in l4f00242t03 The regulator support in the l4f00242t03 is very non-idiomatic. Rather than requesting the regulators based on the device name and the supply names used by the device the driver requires boards to pass system specific supply names around through platform data. The driver also conditionally requests the regulators based on this platform data, adding unneeded conditional code to the driver. Fix this by removing the platform data and converting to the standard idiom, also updating all in tree users of the driver. As no datasheet appears to be available for the LCD I'm guessing the names for the supplies based on the existing users and I've no ability to do anything more than compile test. The use of regulator_set_voltage() in the driver is also problematic, since fixed voltages are required the expectation would be that the voltages would be fixed in the constraints set by the machines rather than manually configured by the driver, but is less problematic. Signed-off-by: Mark Brown Tested-by: Fabio Estevam Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/l4f00242t03.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/l4f00242t03.h b/include/linux/spi/l4f00242t03.h index aee1dbda4edc..bc8677c8eba9 100644 --- a/include/linux/spi/l4f00242t03.h +++ b/include/linux/spi/l4f00242t03.h @@ -24,8 +24,6 @@ struct l4f00242t03_pdata { unsigned int reset_gpio; unsigned int data_enable_gpio; - const char *io_supply; /* will be set to 1.8 V */ - const char *core_supply; /* will be set to 2.8 V */ }; #endif /* _INCLUDE_LINUX_SPI_L4F00242T03_H_ */ -- cgit v1.2.2 From f59b6f9f323ff1b4567a69f9063cdd8bb57805e6 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Mon, 31 Oct 2011 17:11:55 -0700 Subject: leds: Renesas TPU LED driver Add V2 of the LED driver for a single timer channel for the TPU hardware block commonly found in Renesas SoCs. The driver has been written with optimal Power Management in mind, so to save power the LED is driven as a regular GPIO pin in case of maximum brightness and power off which allows the TPU hardware to be idle and which in turn allows the clocks to be stopped and the power domain to be turned off transparently. Any other brightness level requires use of the TPU hardware in PWM mode. TPU hardware device clocks and power are managed through Runtime PM. System suspend and resume is known to be working - during suspend the LED is set to off by the generic LED code. The TPU hardware timer is equipeed with a 16-bit counter together with an up-to-divide-by-64 prescaler which makes the hardware suitable for brightness control. Hardware blink is unsupported. The LED PWM waveform has been verified with a Fluke 123 Scope meter on a sh7372 Mackerel board. Tested with experimental sh7372 A3SP power domain patches. Platform device bind/unbind tested ok. V2 has been tested on the DS2 LED of the sh73a0-based AG5EVM. [axel.lin@gmail.com: include linux/module.h] Signed-off-by: Magnus Damm Cc: Paul Mundt Cc: Richard Purdie Cc: Grant Likely Signed-off-by: Axel Lin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds-renesas-tpu.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 include/linux/leds-renesas-tpu.h (limited to 'include/linux') diff --git a/include/linux/leds-renesas-tpu.h b/include/linux/leds-renesas-tpu.h new file mode 100644 index 000000000000..055387086fc1 --- /dev/null +++ b/include/linux/leds-renesas-tpu.h @@ -0,0 +1,14 @@ +#ifndef __LEDS_RENESAS_TPU_H__ +#define __LEDS_RENESAS_TPU_H__ + +struct led_renesas_tpu_config { + char *name; + unsigned pin_gpio_fn; + unsigned pin_gpio; + unsigned int channel_offset; + unsigned int timer_bit; + unsigned int max_brightness; + unsigned int refresh_rate; +}; + +#endif /* __LEDS_RENESAS_TPU_H__ */ -- cgit v1.2.2 From 2b67c95b74f17c13c7b3a990540c9dd9b4a8480d Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Mon, 31 Oct 2011 17:12:09 -0700 Subject: drivers/leds/leds-renesas-tpu.c: move Renesas TPU LED driver platform data Use the platform_data include directory for the TPU LED driver, as suggested by Paul Mundt. Signed-off-by: Magnus Damm Cc: Paul Mundt Cc: Richard Purdie Cc: Grant Likely Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds-renesas-tpu.h | 14 -------------- include/linux/platform_data/leds-renesas-tpu.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 14 deletions(-) delete mode 100644 include/linux/leds-renesas-tpu.h create mode 100644 include/linux/platform_data/leds-renesas-tpu.h (limited to 'include/linux') diff --git a/include/linux/leds-renesas-tpu.h b/include/linux/leds-renesas-tpu.h deleted file mode 100644 index 055387086fc1..000000000000 --- a/include/linux/leds-renesas-tpu.h +++ /dev/null @@ -1,14 +0,0 @@ -#ifndef __LEDS_RENESAS_TPU_H__ -#define __LEDS_RENESAS_TPU_H__ - -struct led_renesas_tpu_config { - char *name; - unsigned pin_gpio_fn; - unsigned pin_gpio; - unsigned int channel_offset; - unsigned int timer_bit; - unsigned int max_brightness; - unsigned int refresh_rate; -}; - -#endif /* __LEDS_RENESAS_TPU_H__ */ diff --git a/include/linux/platform_data/leds-renesas-tpu.h b/include/linux/platform_data/leds-renesas-tpu.h new file mode 100644 index 000000000000..055387086fc1 --- /dev/null +++ b/include/linux/platform_data/leds-renesas-tpu.h @@ -0,0 +1,14 @@ +#ifndef __LEDS_RENESAS_TPU_H__ +#define __LEDS_RENESAS_TPU_H__ + +struct led_renesas_tpu_config { + char *name; + unsigned pin_gpio_fn; + unsigned pin_gpio; + unsigned int channel_offset; + unsigned int timer_bit; + unsigned int max_brightness; + unsigned int refresh_rate; +}; + +#endif /* __LEDS_RENESAS_TPU_H__ */ -- cgit v1.2.2 From 55036ba76b2d2fd53b5c00993fcec5ed56e83922 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 31 Oct 2011 17:12:41 -0700 Subject: lib: rename pack_hex_byte() to hex_byte_pack() As suggested by Andrew Morton in [1] there is better to have most significant part first in the function name. [1] https://lkml.org/lkml/2011/9/20/22 There is no functional change. Signed-off-by: Andy Shevchenko Cc: Jesper Nilsson Cc: David Howells Cc: Koichi Yasutake Cc: Jason Wessel Cc: Mimi Zohar Cc: James Morris Cc: OGAWA Hirofumi Cc: "John W. Linville" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e40c950e1d62..4824f26a0dc2 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -372,13 +372,18 @@ extern const char hex_asc[]; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] -static inline char *pack_hex_byte(char *buf, u8 byte) +static inline char *hex_byte_pack(char *buf, u8 byte) { *buf++ = hex_asc_hi(byte); *buf++ = hex_asc_lo(byte); return buf; } +static inline char * __deprecated pack_hex_byte(char *buf, u8 byte) +{ + return hex_byte_pack(buf, byte); +} + extern int hex_to_bin(char ch); extern int __must_check hex2bin(u8 *dst, const char *src, size_t count); -- cgit v1.2.2 From fc23af34b00ef444eec088f744983b9ca6c7f5d1 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 31 Oct 2011 17:13:08 -0700 Subject: llist-return-whether-list-is-empty-before-adding-in-llist_add-fix clarify comment Cc: Huang Ying Cc: Mathieu Desnoyers Cc: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/llist.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index 7287734e08d1..801b44b07aac 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -148,7 +148,7 @@ static inline struct llist_node *llist_next(struct llist_node *node) * @new: new entry to be added * @head: the head for your lock-less list * - * Return whether list is empty before adding. + * Returns true if the list was empty prior to adding this entry. */ static inline bool llist_add(struct llist_node *new, struct llist_head *head) { -- cgit v1.2.2 From 67d0a0754455f89ef3946946159d8ec9e45ce33a Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 31 Oct 2011 17:13:10 -0700 Subject: kernel.h/checkpatch: mark strict_strto and simple_strto as obsolete Mark obsolete/deprecated strict_strto and simple_strto functions and macros as obsolete. Update checkpatch to warn about their use. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 4824f26a0dc2..4c0d3b2fd5fc 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -287,6 +287,8 @@ static inline int __must_check kstrtos32_from_user(const char __user *s, size_t return kstrtoint_from_user(s, count, base, res); } +/* Obsolete, do not use. Use kstrto instead */ + extern unsigned long simple_strtoul(const char *,char **,unsigned int); extern long simple_strtol(const char *,char **,unsigned int); extern unsigned long long simple_strtoull(const char *,char **,unsigned int); @@ -296,6 +298,8 @@ extern long long simple_strtoll(const char *,char **,unsigned int); #define strict_strtoull kstrtoull #define strict_strtoll kstrtoll +/* lib/printf utilities */ + extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...); extern __printf(2, 0) int vsprintf(char *buf, const char *, va_list); extern __printf(3, 4) -- cgit v1.2.2 From f83347df57113e54e999aa2491be3f685c0c262d Mon Sep 17 00:00:00 2001 From: Marcos Paulo de Souza Date: Mon, 31 Oct 2011 15:11:45 +0000 Subject: include: linux: skbuf.h: Fix parameter documentation Fixes parameter name of skb_frag_dmamap function to silence warning on make htmldocs. Signed-off-by: Marcos Paulo de Souza Signed-off-by: David S. Miller --- include/linux/skbuff.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6a6b352326d7..fe864885c1ed 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1806,12 +1806,12 @@ static inline void skb_frag_set_page(struct sk_buff *skb, int f, /** * skb_frag_dma_map - maps a paged fragment via the DMA API - * @device: the device to map the fragment to + * @dev: the device to map the fragment to * @frag: the paged fragment to map * @offset: the offset within the fragment (starting at the * fragment's own offset) * @size: the number of bytes to map - * @direction: the direction of the mapping (%PCI_DMA_*) + * @dir: the direction of the mapping (%PCI_DMA_*) * * Maps the page associated with @frag to @device. */ -- cgit v1.2.2 From 8d83f63b19d45ba0898b97824afcc8e0b5c954cb Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 1 Oct 2011 13:51:29 -0400 Subject: netfilter: export NAT definitions through linux/netfilter_ipv4/nf_nat.h This patch exports several definitions that used to live under include/net/netfilter/nf_nat.h. These definitions, although not exported, have been used by iptables and other userspace applications like miniupnpd since long time. Basically, these userspace tools included some internal definition of the required structures and they assume no changes in the binary representation (which is OK indeed). To resolve this situation, this patch makes public the required structure and install them in INSTALL_HDR_PATH. See: https://bugs.gentoo.org/376873, for more information. This patch is heavily based on the initial patch sent by: Anthony G. Basile Which was entitled: netfilter: export sanitized nf_nat.h to INSTALL_HDR_PATH Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter_ipv4/Kbuild | 1 + include/linux/netfilter_ipv4/nf_nat.h | 58 +++++++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+) create mode 100644 include/linux/netfilter_ipv4/nf_nat.h (limited to 'include/linux') diff --git a/include/linux/netfilter_ipv4/Kbuild b/include/linux/netfilter_ipv4/Kbuild index f9930c87fff3..c3b45480ecf7 100644 --- a/include/linux/netfilter_ipv4/Kbuild +++ b/include/linux/netfilter_ipv4/Kbuild @@ -12,3 +12,4 @@ header-y += ipt_ah.h header-y += ipt_ecn.h header-y += ipt_realm.h header-y += ipt_ttl.h +header-y += nf_nat.h diff --git a/include/linux/netfilter_ipv4/nf_nat.h b/include/linux/netfilter_ipv4/nf_nat.h new file mode 100644 index 000000000000..7a861d09fc86 --- /dev/null +++ b/include/linux/netfilter_ipv4/nf_nat.h @@ -0,0 +1,58 @@ +#ifndef _LINUX_NF_NAT_H +#define _LINUX_NF_NAT_H + +#include + +#define IP_NAT_RANGE_MAP_IPS 1 +#define IP_NAT_RANGE_PROTO_SPECIFIED 2 +#define IP_NAT_RANGE_PROTO_RANDOM 4 +#define IP_NAT_RANGE_PERSISTENT 8 + +/* The protocol-specific manipulable parts of the tuple. */ +union nf_conntrack_man_proto { + /* Add other protocols here. */ + __be16 all; + + struct { + __be16 port; + } tcp; + struct { + __be16 port; + } udp; + struct { + __be16 id; + } icmp; + struct { + __be16 port; + } dccp; + struct { + __be16 port; + } sctp; + struct { + __be16 key; /* GRE key is 32bit, PPtP only uses 16bit */ + } gre; +}; + +/* Single range specification. */ +struct nf_nat_range { + /* Set to OR of flags above. */ + unsigned int flags; + + /* Inclusive: network order. */ + __be32 min_ip, max_ip; + + /* Inclusive: network order */ + union nf_conntrack_man_proto min, max; +}; + +/* For backwards compat: don't use in modern code. */ +struct nf_nat_multi_range_compat { + unsigned int rangesize; /* Must be 1. */ + + /* hangs off end. */ + struct nf_nat_range range[1]; +}; + +#define nf_nat_multi_range nf_nat_multi_range_compat + +#endif -- cgit v1.2.2 From 4140c54266365e4267a2dbc5765101bba3b42896 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 18 Jul 2011 11:24:46 -0300 Subject: i7core_edac: Drop the edac_mce facility Remove edac_mce pieces and use the normal MCE decoder notifier chain by retaining the same functionality with considerably less code. Signed-off-by: Borislav Petkov Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac_mce.h | 31 ------------------------------- 1 file changed, 31 deletions(-) delete mode 100644 include/linux/edac_mce.h (limited to 'include/linux') diff --git a/include/linux/edac_mce.h b/include/linux/edac_mce.h deleted file mode 100644 index f974fc035363..000000000000 --- a/include/linux/edac_mce.h +++ /dev/null @@ -1,31 +0,0 @@ -/* Provides edac interface to mcelog events - * - * This file may be distributed under the terms of the - * GNU General Public License version 2. - * - * Copyright (c) 2009 by: - * Mauro Carvalho Chehab - * - * Red Hat Inc. http://www.redhat.com - */ - -#if defined(CONFIG_EDAC_MCE) || \ - (defined(CONFIG_EDAC_MCE_MODULE) && defined(MODULE)) - -#include -#include - -struct edac_mce { - struct list_head list; - - void *priv; - int (*check_error)(void *priv, struct mce *mce); -}; - -int edac_mce_register(struct edac_mce *edac_mce); -void edac_mce_unregister(struct edac_mce *edac_mce); -int edac_mce_parse(struct mce *mce); - -#else -#define edac_mce_parse(mce) (0) -#endif -- cgit v1.2.2 From 3ead6f4d42e2866a48d7abf9bc98553f1110b6df Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Sun, 14 Aug 2011 17:52:32 +0300 Subject: virtio_config: Add virtio_config_val_len() This patch adds virtio_config_val_len() which allows retrieving variable length data from the virtio config space only if a specific feature is on. Cc: Amit Shah Cc: "Michael S. Tsirkin" Cc: Rusty Russell Cc: virtualization@lists.linux-foundation.org Signed-off-by: Sasha Levin Signed-off-by: Rusty Russell --- include/linux/virtio_config.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 39c88c5ad19d..add4790b21fe 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -155,6 +155,9 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev, #define virtio_config_val(vdev, fbit, offset, v) \ virtio_config_buf((vdev), (fbit), (offset), (v), sizeof(*v)) +#define virtio_config_val_len(vdev, fbit, offset, v, len) \ + virtio_config_buf((vdev), (fbit), (offset), (v), (len)) + static inline int virtio_config_buf(struct virtio_device *vdev, unsigned int fbit, unsigned int offset, -- cgit v1.2.2 From 5f41f8bfc95e84536207b2af8918f2e674164a42 Mon Sep 17 00:00:00 2001 From: Wang Sheng-Hui Date: Thu, 25 Aug 2011 21:04:05 +0800 Subject: virtio.h: correct comment for struct virtio_driver The patch is against 3.0. Signed-off-by: Wang Sheng-Hui Signed-off-by: Rusty Russell --- include/linux/virtio.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 851ebf1a4476..4c069d8bd740 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -131,10 +131,10 @@ void unregister_virtio_device(struct virtio_device *dev); * virtio_driver - operations for a virtio I/O driver * @driver: underlying device driver (populate name and owner). * @id_table: the ids serviced by this driver. - * @feature_table: an array of feature numbers supported by this device. + * @feature_table: an array of feature numbers supported by this driver. * @feature_table_size: number of entries in the feature table array. * @probe: the function to call when a device is found. Returns 0 or -errno. - * @remove: the function when a device is removed. + * @remove: the function to call when a device is removed. * @config_changed: optional function to call when the device configuration * changes; may be called in interrupt context. */ -- cgit v1.2.2 From 00b894e874581f6b388c5817d4d5546c22cf9640 Mon Sep 17 00:00:00 2001 From: Wang Sheng-Hui Date: Mon, 29 Aug 2011 15:55:59 +0800 Subject: virtio: modify vring_init and vring_size to take account of the layout containing *_event_idx Based on the layout description in the comments, take account of the *_event_idx in functions vring_init and vring_size. Signed-off-by: Wang Sheng-Hui Signed-off-by: Rusty Russell --- include/linux/virtio_ring.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h index 4a32cb6da425..36be0f6e18a9 100644 --- a/include/linux/virtio_ring.h +++ b/include/linux/virtio_ring.h @@ -135,13 +135,13 @@ static inline void vring_init(struct vring *vr, unsigned int num, void *p, vr->num = num; vr->desc = p; vr->avail = p + num*sizeof(struct vring_desc); - vr->used = (void *)(((unsigned long)&vr->avail->ring[num] + align-1) - & ~(align - 1)); + vr->used = (void *)(((unsigned long)&vr->avail->ring[num] + sizeof(__u16) + + align-1) & ~(align - 1)); } static inline unsigned vring_size(unsigned int num, unsigned long align) { - return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (2 + num) + return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num) + align - 1) & ~(align - 1)) + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num; } -- cgit v1.2.2 From edfd52e6367270c90f3fd7cc302b375ffa89f91e Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Mon, 24 Oct 2011 14:07:03 +0100 Subject: virtio: Add platform bus driver for memory mapped virtio device This patch, based on virtio PCI driver, adds support for memory mapped (platform) virtio device. This should allow environments like qemu to use virtio-based block & network devices even on platforms without PCI support. One can define and register a platform device which resources will describe memory mapped control registers and "mailbox" interrupt. Such device can be also instantiated using the Device Tree node with compatible property equal "virtio,mmio". Cc: Anthony Liguori Cc: Michael S.Tsirkin Signed-off-by: Pawel Moll Signed-off-by: Rusty Russell --- include/linux/virtio_mmio.h | 111 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 include/linux/virtio_mmio.h (limited to 'include/linux') diff --git a/include/linux/virtio_mmio.h b/include/linux/virtio_mmio.h new file mode 100644 index 000000000000..27c7edefbc86 --- /dev/null +++ b/include/linux/virtio_mmio.h @@ -0,0 +1,111 @@ +/* + * Virtio platform device driver + * + * Copyright 2011, ARM Ltd. + * + * Based on Virtio PCI driver by Anthony Liguori, copyright IBM Corp. 2007 + * + * This header is BSD licensed so anyone can use the definitions to implement + * compatible drivers/servers. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of IBM nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _LINUX_VIRTIO_MMIO_H +#define _LINUX_VIRTIO_MMIO_H + +/* + * Control registers + */ + +/* Magic value ("virt" string) - Read Only */ +#define VIRTIO_MMIO_MAGIC_VALUE 0x000 + +/* Virtio device version - Read Only */ +#define VIRTIO_MMIO_VERSION 0x004 + +/* Virtio device ID - Read Only */ +#define VIRTIO_MMIO_DEVICE_ID 0x008 + +/* Virtio vendor ID - Read Only */ +#define VIRTIO_MMIO_VENDOR_ID 0x00c + +/* Bitmask of the features supported by the host + * (32 bits per set) - Read Only */ +#define VIRTIO_MMIO_HOST_FEATURES 0x010 + +/* Host features set selector - Write Only */ +#define VIRTIO_MMIO_HOST_FEATURES_SEL 0x014 + +/* Bitmask of features activated by the guest + * (32 bits per set) - Write Only */ +#define VIRTIO_MMIO_GUEST_FEATURES 0x020 + +/* Activated features set selector - Write Only */ +#define VIRTIO_MMIO_GUEST_FEATURES_SET 0x024 + +/* Guest's memory page size in bytes - Write Only */ +#define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028 + +/* Queue selector - Write Only */ +#define VIRTIO_MMIO_QUEUE_SEL 0x030 + +/* Maximum size of the currently selected queue - Read Only */ +#define VIRTIO_MMIO_QUEUE_NUM_MAX 0x034 + +/* Queue size for the currently selected queue - Write Only */ +#define VIRTIO_MMIO_QUEUE_NUM 0x038 + +/* Used Ring alignment for the currently selected queue - Write Only */ +#define VIRTIO_MMIO_QUEUE_ALIGN 0x03c + +/* Guest's PFN for the currently selected queue - Read Write */ +#define VIRTIO_MMIO_QUEUE_PFN 0x040 + +/* Queue notifier - Write Only */ +#define VIRTIO_MMIO_QUEUE_NOTIFY 0x050 + +/* Interrupt status - Read Only */ +#define VIRTIO_MMIO_INTERRUPT_STATUS 0x060 + +/* Interrupt acknowledge - Write Only */ +#define VIRTIO_MMIO_INTERRUPT_ACK 0x064 + +/* Device status register - Read Write */ +#define VIRTIO_MMIO_STATUS 0x070 + +/* The config space is defined by each driver as + * the per-driver configuration space - Read Write */ +#define VIRTIO_MMIO_CONFIG 0x100 + + + +/* + * Interrupt flags (re: interrupt status & acknowledge registers) + */ + +#define VIRTIO_MMIO_INT_VRING (1 << 0) +#define VIRTIO_MMIO_INT_CONFIG (1 << 1) + +#endif -- cgit v1.2.2 From 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Wed, 2 Nov 2011 09:44:39 +0100 Subject: readlinkat: ensure we return ENOENT for the empty pathname for normal lookups Since the commit below which added O_PATH support to the *at() calls, the error return for readlink/readlinkat for the empty pathname has switched from ENOENT to EINVAL: commit 65cfc6722361570bfe255698d9cd4dccaf47570d Author: Al Viro Date: Sun Mar 13 15:56:26 2011 -0400 readlinkat(), fchownat() and fstatat() with empty relative pathnames This is both unexpected for userspace and makes readlink/readlinkat inconsistant with all other interfaces; and inconsistant with our stated return for these pathnames. As the readlinkat call does not have a flags parameter we cannot use the AT_EMPTY_PATH approach used in the other calls. Therefore expose whether the original path is infact entry via a new user_path_at_empty() path lookup function. Use this to determine whether to default to EINVAL or ENOENT for failures. Addresses http://bugs.launchpad.net/bugs/817187 [akpm@linux-foundation.org: remove unused getname_flags()] Signed-off-by: Andy Whitcroft Cc: Christoph Hellwig Cc: Al Viro Cc: Cc: Signed-off-by: Andrew Morton Signed-off-by: Christoph Hellwig --- include/linux/namei.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 409328d1cbbb..ffc02135c483 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -67,6 +67,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_EMPTY 0x4000 extern int user_path_at(int, const char __user *, unsigned, struct path *); +extern int user_path_at_empty(int, const char __user *, unsigned, struct path *, int *empty); #define user_path(name, path) user_path_at(AT_FDCWD, name, LOOKUP_FOLLOW, path) #define user_lpath(name, path) user_path_at(AT_FDCWD, name, 0, path) -- cgit v1.2.2 From bfe8684869601dacfcb2cd69ef8cfd9045f62170 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 28 Oct 2011 14:13:29 +0200 Subject: filesystems: add set_nlink() Replace remaining direct i_nlink updates with a new set_nlink() updater function. Signed-off-by: Miklos Szeredi Tested-by: Toshiyuki Okajima Signed-off-by: Christoph Hellwig --- include/linux/fs.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 7a049fd2aa4c..48c1f5fc7411 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1754,6 +1754,19 @@ static inline void mark_inode_dirty_sync(struct inode *inode) __mark_inode_dirty(inode, I_DIRTY_SYNC); } +/** + * set_nlink - directly set an inode's link count + * @inode: inode + * @nlink: new nlink (should be non-zero) + * + * This is a low-level filesystem helper to replace any + * direct filesystem manipulation of i_nlink. + */ +static inline void set_nlink(struct inode *inode, unsigned int nlink) +{ + inode->i_nlink = nlink; +} + /** * inc_nlink - directly increment an inode's link count * @inode: inode -- cgit v1.2.2 From a78ef704a8dd430225955f0709b22d4a6ba21deb Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 28 Oct 2011 14:13:30 +0200 Subject: vfs: protect i_nlink Prevent direct modification of i_nlink by making it const and adding a non-const __i_nlink alias. Signed-off-by: Miklos Szeredi Tested-by: Toshiyuki Okajima Signed-off-by: Christoph Hellwig --- include/linux/fs.h | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 48c1f5fc7411..23467d768cab 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -768,7 +768,17 @@ struct inode { /* Stat data, not accessed from path walking */ unsigned long i_ino; - unsigned int i_nlink; + /* + * Filesystems may only read i_nlink directly. They shall use the + * following functions for modification: + * + * (set|clear|inc|drop)_nlink + * inode_(inc|dec)_link_count + */ + union { + const unsigned int i_nlink; + unsigned int __i_nlink; + }; dev_t i_rdev; loff_t i_size; struct timespec i_atime; @@ -1764,7 +1774,7 @@ static inline void mark_inode_dirty_sync(struct inode *inode) */ static inline void set_nlink(struct inode *inode, unsigned int nlink) { - inode->i_nlink = nlink; + inode->__i_nlink = nlink; } /** @@ -1777,7 +1787,7 @@ static inline void set_nlink(struct inode *inode, unsigned int nlink) */ static inline void inc_nlink(struct inode *inode) { - inode->i_nlink++; + inode->__i_nlink++; } static inline void inode_inc_link_count(struct inode *inode) @@ -1799,7 +1809,7 @@ static inline void inode_inc_link_count(struct inode *inode) */ static inline void drop_nlink(struct inode *inode) { - inode->i_nlink--; + inode->__i_nlink--; } /** @@ -1812,7 +1822,7 @@ static inline void drop_nlink(struct inode *inode) */ static inline void clear_nlink(struct inode *inode) { - inode->i_nlink = 0; + inode->__i_nlink = 0; } static inline void inode_dec_link_count(struct inode *inode) -- cgit v1.2.2 From f0023bc617ba600956b9226f1806033d7486c8ba Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Fri, 28 Oct 2011 10:02:42 -0700 Subject: vfs: add d_prune dentry operation This adds a d_prune dentry operation that is called by the VFS prior to pruning (i.e. unhashing and killing) a hashed dentry from the dcache. Wrap dentry_lru_del() and use the new _prune() helper in the cases where we are about to unhash and kill the dentry. This will be used by Ceph to maintain a flag indicating whether the complete contents of a directory are contained in the dcache, allowing it to satisfy lookups and readdir without addition server communication. Renumber a few DCACHE_* #defines to group DCACHE_OP_PRUNE with the other DCACHE_OP_ bits. Signed-off-by: Sage Weil Signed-off-by: Christoph Hellwig --- include/linux/dcache.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 62157c03caf7..4df926199369 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -165,6 +165,7 @@ struct dentry_operations { unsigned int, const char *, const struct qstr *); int (*d_delete)(const struct dentry *); void (*d_release)(struct dentry *); + void (*d_prune)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); struct vfsmount *(*d_automount)(struct path *); @@ -184,8 +185,9 @@ struct dentry_operations { #define DCACHE_OP_COMPARE 0x0002 #define DCACHE_OP_REVALIDATE 0x0004 #define DCACHE_OP_DELETE 0x0008 +#define DCACHE_OP_PRUNE 0x0010 -#define DCACHE_DISCONNECTED 0x0010 +#define DCACHE_DISCONNECTED 0x0020 /* This dentry is possibly not currently connected to the dcache tree, in * which case its parent will either be itself, or will have this flag as * well. nfsd will not use a dentry with this bit set, but will first @@ -196,8 +198,8 @@ struct dentry_operations { * dentry into place and return that dentry rather than the passed one, * typically using d_splice_alias. */ -#define DCACHE_REFERENCED 0x0020 /* Recently used, don't discard. */ -#define DCACHE_RCUACCESS 0x0040 /* Entry has ever been RCU-visible */ +#define DCACHE_REFERENCED 0x0040 /* Recently used, don't discard. */ +#define DCACHE_RCUACCESS 0x0080 /* Entry has ever been RCU-visible */ #define DCACHE_CANT_MOUNT 0x0100 #define DCACHE_GENOCIDE 0x0200 -- cgit v1.2.2 From b958f7a7cbdfbf59ba61de7ebb9c59b0ee3a7967 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sun, 30 Oct 2011 23:50:36 +0100 Subject: mfd: Fix missing abx500 header file updates I missed to include a patch adding the new silicon revision define CUT3P3 and remove the retired CUT0 versions of AB8500. Also delete the reference to the retired AB3550 from the header. Reported-by: Randy Dunlap Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/abx500.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 6d096e8b7746..9970337ff041 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -34,11 +34,11 @@ #define AB5500_2_0 0x24 /* AB8500 CIDs*/ -#define AB8500_CUTEARLY 0x00 #define AB8500_CUT1P0 0x10 #define AB8500_CUT1P1 0x11 #define AB8500_CUT2P0 0x20 #define AB8500_CUT3P0 0x30 +#define AB8500_CUT3P3 0x33 /* * AB3100, EVENTA1, A2 and A3 event register flags -- cgit v1.2.2 From 70b50f94f1644e2aa7cb374819cfd93f3c28d725 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Wed, 2 Nov 2011 13:36:59 -0700 Subject: mm: thp: tail page refcounting fix Michel while working on the working set estimation code, noticed that calling get_page_unless_zero() on a random pfn_to_page(random_pfn) wasn't safe, if the pfn ended up being a tail page of a transparent hugepage under splitting by __split_huge_page_refcount(). He then found the problem could also theoretically materialize with page_cache_get_speculative() during the speculative radix tree lookups that uses get_page_unless_zero() in SMP if the radix tree page is freed and reallocated and get_user_pages is called on it before page_cache_get_speculative has a chance to call get_page_unless_zero(). So the best way to fix the problem is to keep page_tail->_count zero at all times. This will guarantee that get_page_unless_zero() can never succeed on any tail page. page_tail->_mapcount is guaranteed zero and is unused for all tail pages of a compound page, so we can simply account the tail page references there and transfer them to tail_page->_count in __split_huge_page_refcount() (in addition to the head_page->_mapcount). While debugging this s/_count/_mapcount/ change I also noticed get_page is called by direct-io.c on pages returned by get_user_pages. That wasn't entirely safe because the two atomic_inc in get_page weren't atomic. As opposed to other get_user_page users like secondary-MMU page fault to establish the shadow pagetables would never call any superflous get_page after get_user_page returns. It's safer to make get_page universally safe for tail pages and to use get_page_foll() within follow_page (inside get_user_pages()). get_page_foll() is safe to do the refcounting for tail pages without taking any locks because it is run within PT lock protected critical sections (PT lock for pte and page_table_lock for pmd_trans_huge). The standard get_page() as invoked by direct-io instead will now take the compound_lock but still only for tail pages. The direct-io paths are usually I/O bound and the compound_lock is per THP so very finegrined, so there's no risk of scalability issues with it. A simple direct-io benchmarks with all lockdep prove locking and spinlock debugging infrastructure enabled shows identical performance and no overhead. So it's worth it. Ideally direct-io should stop calling get_page() on pages returned by get_user_pages(). The spinlock in get_page() is already optimized away for no-THP builds but doing get_page() on tail pages returned by GUP is generally a rare operation and usually only run in I/O paths. This new refcounting on page_tail->_mapcount in addition to avoiding new RCU critical sections will also allow the working set estimation code to work without any further complexity associated to the tail page refcounting with THP. Signed-off-by: Andrea Arcangeli Reported-by: Michel Lespinasse Reviewed-by: Michel Lespinasse Reviewed-by: Minchan Kim Cc: Peter Zijlstra Cc: Hugh Dickins Cc: Johannes Weiner Cc: Rik van Riel Cc: Mel Gorman Cc: KOSAKI Motohiro Cc: Benjamin Herrenschmidt Cc: David Gibson Cc: Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 56 +++++++++++++++++++----------------------------- include/linux/mm_types.h | 21 ++++++++++++++---- 2 files changed, 39 insertions(+), 38 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 3b3e3b8bb706..f81b7b41930c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -356,36 +356,39 @@ static inline struct page *compound_head(struct page *page) return page; } +/* + * The atomic page->_mapcount, starts from -1: so that transitions + * both from it and to it can be tracked, using atomic_inc_and_test + * and atomic_add_negative(-1). + */ +static inline void reset_page_mapcount(struct page *page) +{ + atomic_set(&(page)->_mapcount, -1); +} + +static inline int page_mapcount(struct page *page) +{ + return atomic_read(&(page)->_mapcount) + 1; +} + static inline int page_count(struct page *page) { return atomic_read(&compound_head(page)->_count); } +extern bool __get_page_tail(struct page *page); + static inline void get_page(struct page *page) { + if (unlikely(PageTail(page))) + if (likely(__get_page_tail(page))) + return; /* * Getting a normal page or the head of a compound page - * requires to already have an elevated page->_count. Only if - * we're getting a tail page, the elevated page->_count is - * required only in the head page, so for tail pages the - * bugcheck only verifies that the page->_count isn't - * negative. + * requires to already have an elevated page->_count. */ - VM_BUG_ON(atomic_read(&page->_count) < !PageTail(page)); + VM_BUG_ON(atomic_read(&page->_count) <= 0); atomic_inc(&page->_count); - /* - * Getting a tail page will elevate both the head and tail - * page->_count(s). - */ - if (unlikely(PageTail(page))) { - /* - * This is safe only because - * __split_huge_page_refcount can't run under - * get_page(). - */ - VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0); - atomic_inc(&page->first_page->_count); - } } static inline struct page *virt_to_head_page(const void *x) @@ -803,21 +806,6 @@ static inline pgoff_t page_index(struct page *page) return page->index; } -/* - * The atomic page->_mapcount, like _count, starts from -1: - * so that transitions both from it and to it can be tracked, - * using atomic_inc_and_test and atomic_add_negative(-1). - */ -static inline void reset_page_mapcount(struct page *page) -{ - atomic_set(&(page)->_mapcount, -1); -} - -static inline int page_mapcount(struct page *page) -{ - return atomic_read(&(page)->_mapcount) + 1; -} - /* * Return true if this page is mapped into pagetables. */ diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 3e01a19a91e8..5b42f1b34eb7 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -62,10 +62,23 @@ struct page { struct { union { - atomic_t _mapcount; /* Count of ptes mapped in mms, - * to show when page is mapped - * & limit reverse map searches. - */ + /* + * Count of ptes mapped in + * mms, to show when page is + * mapped & limit reverse map + * searches. + * + * Used also for tail pages + * refcounting instead of + * _count. Tail pages cannot + * be mapped and keeping the + * tail page _count zero at + * all times guarantees + * get_page_unless_zero() will + * never succeed on tail + * pages. + */ + atomic_t _mapcount; struct { unsigned inuse:16; -- cgit v1.2.2 From b35a35b556f5e6b7993ad0baf20173e75c09ce8c Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Wed, 2 Nov 2011 13:37:36 -0700 Subject: thp: share get_huge_page_tail() This avoids duplicating the function in every arch gup_fast. Signed-off-by: Andrea Arcangeli Cc: Peter Zijlstra Cc: Hugh Dickins Cc: Johannes Weiner Cc: Rik van Riel Cc: Mel Gorman Cc: KOSAKI Motohiro Cc: Benjamin Herrenschmidt Cc: David Gibson Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: David Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index f81b7b41930c..3dc3a8c2c485 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -376,6 +376,17 @@ static inline int page_count(struct page *page) return atomic_read(&compound_head(page)->_count); } +static inline void get_huge_page_tail(struct page *page) +{ + /* + * __split_huge_page_refcount() cannot run + * from under us. + */ + VM_BUG_ON(page_mapcount(page) < 0); + VM_BUG_ON(atomic_read(&page->_count) != 0); + atomic_inc(&page->_mapcount); +} + extern bool __get_page_tail(struct page *page); static inline void get_page(struct page *page) -- cgit v1.2.2 From b6eb48d02dc73d19bebc396a9e92dd64a65d3199 Mon Sep 17 00:00:00 2001 From: Sami Kerola Date: Wed, 2 Nov 2011 13:37:58 -0700 Subject: minix: describe usage of different magic numbers One can get this information from minix/inode.c, but adding the explanations at the definition sites is more appropriate. Signed-off-by: Sami Kerola Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/magic.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/magic.h b/include/linux/magic.h index 1e5df2af8d84..2d4beab0d5b7 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -30,11 +30,11 @@ #define ANON_INODE_FS_MAGIC 0x09041934 #define PSTOREFS_MAGIC 0x6165676C -#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */ -#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */ -#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */ -#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */ -#define MINIX3_SUPER_MAGIC 0x4d5a /* minix V3 fs */ +#define MINIX_SUPER_MAGIC 0x137F /* minix v1 fs, 14 char names */ +#define MINIX_SUPER_MAGIC2 0x138F /* minix v1 fs, 30 char names */ +#define MINIX2_SUPER_MAGIC 0x2468 /* minix v2 fs, 14 char names */ +#define MINIX2_SUPER_MAGIC2 0x2478 /* minix v2 fs, 30 char names */ +#define MINIX3_SUPER_MAGIC 0x4d5a /* minix v3 fs, 60 char names */ #define MSDOS_SUPER_MAGIC 0x4d44 /* MD */ #define NCP_SUPER_MAGIC 0x564c /* Guess, what 0x564c is :-) */ -- cgit v1.2.2 From c0ff4b8540a5c158b8e5bafb7d767298b67b0b92 Mon Sep 17 00:00:00 2001 From: Raghavendra K T Date: Wed, 2 Nov 2011 13:38:15 -0700 Subject: memcg: rename mem variable to memcg The memcg code sometimes uses "struct mem_cgroup *mem" and sometimes uses "struct mem_cgroup *memcg". Rename all mem variables to memcg in source file. Signed-off-by: Raghavendra K T Acked-by: KAMEZAWA Hiroyuki Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index ac797fa03ef8..05206aac5965 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -78,8 +78,8 @@ extern void mem_cgroup_uncharge_end(void); extern void mem_cgroup_uncharge_page(struct page *page); extern void mem_cgroup_uncharge_cache_page(struct page *page); -extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); -int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); +extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask); +int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *memcg); extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page); extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); @@ -88,19 +88,19 @@ extern struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm); static inline int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup) { - struct mem_cgroup *mem; + struct mem_cgroup *memcg; rcu_read_lock(); - mem = mem_cgroup_from_task(rcu_dereference((mm)->owner)); + memcg = mem_cgroup_from_task(rcu_dereference((mm)->owner)); rcu_read_unlock(); - return cgroup == mem; + return cgroup == memcg; } -extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem); +extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg); extern int mem_cgroup_prepare_migration(struct page *page, struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask); -extern void mem_cgroup_end_migration(struct mem_cgroup *mem, +extern void mem_cgroup_end_migration(struct mem_cgroup *memcg, struct page *oldpage, struct page *newpage, bool migration_ok); /* @@ -148,7 +148,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, gfp_t gfp_mask, unsigned long *total_scanned); -u64 mem_cgroup_get_limit(struct mem_cgroup *mem); +u64 mem_cgroup_get_limit(struct mem_cgroup *memcg); void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); #ifdef CONFIG_TRANSPARENT_HUGEPAGE @@ -244,18 +244,20 @@ static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm return NULL; } -static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) +static inline int mm_match_cgroup(struct mm_struct *mm, + struct mem_cgroup *memcg) { return 1; } static inline int task_in_mem_cgroup(struct task_struct *task, - const struct mem_cgroup *mem) + const struct mem_cgroup *memcg) { return 1; } -static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +static inline struct cgroup_subsys_state + *mem_cgroup_css(struct mem_cgroup *memcg) { return NULL; } @@ -267,22 +269,22 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage, return 0; } -static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, +static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg, struct page *oldpage, struct page *newpage, bool migration_ok) { } -static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) +static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *memcg) { return 0; } -static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, +static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *memcg, int priority) { } -static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, +static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *memcg, int priority) { } @@ -348,7 +350,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, } static inline -u64 mem_cgroup_get_limit(struct mem_cgroup *mem) +u64 mem_cgroup_get_limit(struct mem_cgroup *memcg) { return 0; } -- cgit v1.2.2 From 9b272977e3b99a8699361d214b51f98c8a9e0e7b Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 2 Nov 2011 13:38:23 -0700 Subject: memcg: skip scanning active lists based on individual size Reclaim decides to skip scanning an active list when the corresponding inactive list is above a certain size in comparison to leave the assumed working set alone while there are still enough reclaim candidates around. The memcg implementation of comparing those lists instead reports whether the whole memcg is low on the requested type of inactive pages, considering all nodes and zones. This can lead to an oversized active list not being scanned because of the state of the other lists in the memcg, as well as an active list being scanned while its corresponding inactive list has enough pages. Not only is this wrong, it's also a scalability hazard, because the global memory state over all nodes and zones has to be gathered for each memcg and zone scanned. Make these calculations purely based on the size of the two LRU lists that are actually affected by the outcome of the decision. Signed-off-by: Johannes Weiner Reviewed-by: Rik van Riel Cc: KOSAKI Motohiro Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Cc: Balbir Singh Reviewed-by: Minchan Kim Reviewed-by: Ying Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 05206aac5965..b87068a1a09e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -106,8 +106,10 @@ extern void mem_cgroup_end_migration(struct mem_cgroup *memcg, /* * For memory reclaim. */ -int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg); -int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg); +int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg, + struct zone *zone); +int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, + struct zone *zone); int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); unsigned long mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid, unsigned int lrumask); @@ -295,13 +297,13 @@ static inline bool mem_cgroup_disabled(void) } static inline int -mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg) +mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg, struct zone *zone) { return 1; } static inline int -mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg) +mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone) { return 1; } -- cgit v1.2.2 From e57940d719e9fc5223d133b631f8cb5232d6064e Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Wed, 2 Nov 2011 13:38:54 -0700 Subject: ipc/sem.c: remove private structures from public header file include/linux/sem.h contains several structures that are only used within ipc/sem.c. The patch moves them into ipc/sem.c - there is no need to expose the structures to the whole kernel. No functional changes, only whitespace cleanups and 80-char per line fixes. Signed-off-by: Manfred Spraul Acked-by: Peter Zijlstra Cc: Thomas Gleixner Cc: Mike Galbraith Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sem.h | 42 ------------------------------------------ 1 file changed, 42 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sem.h b/include/linux/sem.h index 1feb2de2ee57..464842621a4a 100644 --- a/include/linux/sem.h +++ b/include/linux/sem.h @@ -83,13 +83,6 @@ struct seminfo { struct task_struct; -/* One semaphore structure for each semaphore in the system. */ -struct sem { - int semval; /* current value */ - int sempid; /* pid of last operation */ - struct list_head sem_pending; /* pending single-sop operations */ -}; - /* One sem_array data structure for each set of semaphores in the system. */ struct sem_array { struct kern_ipc_perm ____cacheline_aligned_in_smp @@ -103,41 +96,6 @@ struct sem_array { int complex_count; /* pending complex operations */ }; -/* One queue for each sleeping process in the system. */ -struct sem_queue { - struct list_head simple_list; /* queue of pending operations */ - struct list_head list; /* queue of pending operations */ - struct task_struct *sleeper; /* this process */ - struct sem_undo *undo; /* undo structure */ - int pid; /* process id of requesting process */ - int status; /* completion status of operation */ - struct sembuf *sops; /* array of pending operations */ - int nsops; /* number of operations */ - int alter; /* does the operation alter the array? */ -}; - -/* Each task has a list of undo requests. They are executed automatically - * when the process exits. - */ -struct sem_undo { - struct list_head list_proc; /* per-process list: all undos from one process. */ - /* rcu protected */ - struct rcu_head rcu; /* rcu struct for sem_undo() */ - struct sem_undo_list *ulp; /* sem_undo_list for the process */ - struct list_head list_id; /* per semaphore array list: all undos for one array */ - int semid; /* semaphore set identifier */ - short * semadj; /* array of adjustments, one per semaphore */ -}; - -/* sem_undo_list controls shared access to the list of sem_undo structures - * that may be shared among all a CLONE_SYSVSEM task group. - */ -struct sem_undo_list { - atomic_t refcnt; - spinlock_t lock; - struct list_head list_proc; -}; - struct sysv_sem { struct sem_undo_list *undo_list; }; -- cgit v1.2.2 From f567a18590742b811287b7512fb0908deac4eef7 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Wed, 2 Nov 2011 13:38:56 -0700 Subject: include/linux/sem.h: make sysv_sem empty if SYSVIPC is disabled For the sysvsem undo, each task struct contains a sysv_sem structure with a pointer to the undo information. This pointer is only necessary if sysvipc is enabled - thus the pointer can be made conditional on CONFIG_SYSVIPC. Signed-off-by: Manfred Spraul Acked-by: Peter Zijlstra Cc: Thomas Gleixner Cc: Mike Galbraith Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sem.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sem.h b/include/linux/sem.h index 464842621a4a..10d6b226afc5 100644 --- a/include/linux/sem.h +++ b/include/linux/sem.h @@ -96,16 +96,21 @@ struct sem_array { int complex_count; /* pending complex operations */ }; +#ifdef CONFIG_SYSVIPC + struct sysv_sem { struct sem_undo_list *undo_list; }; -#ifdef CONFIG_SYSVIPC - extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk); extern void exit_sem(struct task_struct *tsk); #else + +struct sysv_sem { + /* empty */ +}; + static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk) { return 0; -- cgit v1.2.2 From 48618fb4e522d9d02e217ac05f52749545c1af20 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 2 Nov 2011 13:39:09 -0700 Subject: RapidIO: add mport driver for Tsi721 bridge Add RapidIO mport driver for IDT TSI721 PCI Express-to-SRIO bridge device. The driver provides full set of callback functions defined for mport devices in RapidIO subsystem. It also is compatible with current version of RIONET driver (Ethernet over RapidIO messaging services). This patch is applicable to kernel versions starting from 2.6.39. Signed-off-by: Alexandre Bounine Signed-off-by: Chul Kim Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h index 0cee0152aca9..b66d13d1bdc0 100644 --- a/include/linux/rio_ids.h +++ b/include/linux/rio_ids.h @@ -39,5 +39,6 @@ #define RIO_DID_IDTCPS1616 0x0379 #define RIO_DID_IDTVPS1616 0x0377 #define RIO_DID_IDTSPS1616 0x0378 +#define RIO_DID_TSI721 0x80ab #endif /* LINUX_RIO_IDS_H */ -- cgit v1.2.2 From f1ecf06854a66ee663f4d4cf029c78cd62a15e04 Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Wed, 2 Nov 2011 13:39:22 -0700 Subject: sysctl: add support for poll() Adding support for poll() in sysctl fs allows userspace to receive notifications of changes in sysctl entries. This adds a infrastructure to allow files in sysctl fs to be pollable and implements it for hostname and domainname. [akpm@linux-foundation.org: s/declare/define/ for definitions] Signed-off-by: Lucas De Marchi Cc: Greg KH Cc: Kay Sievers Cc: Al Viro Cc: "Eric W. Biederman" Cc: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sysctl.h | 22 ++++++++++++++++++++++ include/linux/utsname.h | 16 ++++++++++++++++ 2 files changed, 38 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 9a1ec10fd504..703cfa33a3ca 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -931,6 +931,7 @@ enum #ifdef __KERNEL__ #include #include +#include /* For the /proc/sys support */ struct ctl_table; @@ -1011,6 +1012,26 @@ extern int proc_do_large_bitmap(struct ctl_table *, int, * cover common cases. */ +/* Support for userspace poll() to watch for changes */ +struct ctl_table_poll { + atomic_t event; + wait_queue_head_t wait; +}; + +static inline void *proc_sys_poll_event(struct ctl_table_poll *poll) +{ + return (void *)(unsigned long)atomic_read(&poll->event); +} + +void proc_sys_poll_notify(struct ctl_table_poll *poll); + +#define __CTL_TABLE_POLL_INITIALIZER(name) { \ + .event = ATOMIC_INIT(0), \ + .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait) } + +#define DEFINE_CTL_TABLE_POLL(name) \ + struct ctl_table_poll name = __CTL_TABLE_POLL_INITIALIZER(name) + /* A sysctl table is an array of struct ctl_table: */ struct ctl_table { @@ -1021,6 +1042,7 @@ struct ctl_table struct ctl_table *child; struct ctl_table *parent; /* Automatically set */ proc_handler *proc_handler; /* Callback for text formatting */ + struct ctl_table_poll *poll; void *extra1; void *extra2; }; diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 4e5b0213fdc1..c714ed75eae2 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -37,6 +37,14 @@ struct new_utsname { #include #include +enum uts_proc { + UTS_PROC_OSTYPE, + UTS_PROC_OSRELEASE, + UTS_PROC_VERSION, + UTS_PROC_HOSTNAME, + UTS_PROC_DOMAINNAME, +}; + struct user_namespace; extern struct user_namespace init_user_ns; @@ -80,6 +88,14 @@ static inline struct uts_namespace *copy_utsname(unsigned long flags, } #endif +#ifdef CONFIG_PROC_SYSCTL +extern void uts_proc_notify(enum uts_proc proc); +#else +static inline void uts_proc_notify(enum uts_proc proc) +{ +} +#endif + static inline struct new_utsname *utsname(void) { return ¤t->nsproxy->uts_ns->name; -- cgit v1.2.2 From 842fa69f3e0c9a178b294e7af7c07f4c9d9e7af2 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 2 Nov 2011 13:39:33 -0700 Subject: include/linux/dma-mapping.h: add dma_zalloc_coherent() Lots of driver code does a dma_alloc_coherent() and then zeroes out the memory with a memset. Make it easy for them. Cc: Alexandre Bounine Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/dma-mapping.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 347fdc32177a..be86ae13893f 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -1,6 +1,7 @@ #ifndef _LINUX_DMA_MAPPING_H #define _LINUX_DMA_MAPPING_H +#include #include #include #include @@ -117,6 +118,15 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) return -EIO; } +static inline void *dma_zalloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) +{ + void *ret = dma_alloc_coherent(dev, size, dma_handle, flag); + if (ret) + memset(ret, 0, size); + return ret; +} + #ifdef CONFIG_HAS_DMA static inline int dma_get_cache_alignment(void) { -- cgit v1.2.2 From 161520451dfacd0eb79d501933f47d3fb7464938 Mon Sep 17 00:00:00 2001 From: James Nuss Date: Wed, 2 Nov 2011 13:39:38 -0700 Subject: pps: new client driver using GPIO This client driver allows you to use a GPIO pin as a source for PPS signals. Platform data [1] are used to specify the GPIO pin number, label, assert event edge type, and whether clear events are captured. This driver is based on the work by Ricardo Martins who submitted an initial implementation [2] of a PPS IRQ client driver to the linuxpps mailing-list on Dec 3 2010. [1] include/linux/pps-gpio.h [2] http://ml.enneenne.com/pipermail/linuxpps/2010-December/004155.html [akpm@linux-foundation.org: remove unneeded cast of void*] Signed-off-by: James Nuss Cc: Ricardo Martins Acked-by: Rodolfo Giometti Signed-off-by: Ricardo Martins Cc: Alexander Gordeev Cc: Igor Plyatov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps-gpio.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/linux/pps-gpio.h (limited to 'include/linux') diff --git a/include/linux/pps-gpio.h b/include/linux/pps-gpio.h new file mode 100644 index 000000000000..0035abe41b9a --- /dev/null +++ b/include/linux/pps-gpio.h @@ -0,0 +1,32 @@ +/* + * pps-gpio.h -- PPS client for GPIOs + * + * + * Copyright (C) 2011 James Nuss + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _PPS_GPIO_H +#define _PPS_GPIO_H + +struct pps_gpio_platform_data { + bool assert_falling_edge; + bool capture_clear; + unsigned int gpio_pin; + const char *gpio_label; +}; + +#endif -- cgit v1.2.2 From 080d676de095a14ecba14c0b9a91acb5bbb634df Mon Sep 17 00:00:00 2001 From: Jeff Moyer Date: Wed, 2 Nov 2011 13:40:10 -0700 Subject: aio: allocate kiocbs in batches In testing aio on a fast storage device, I found that the context lock takes up a fair amount of cpu time in the I/O submission path. The reason is that we take it for every I/O submitted (see __aio_get_req). Since we know how many I/Os are passed to io_submit, we can preallocate the kiocbs in batches, reducing the number of times we take and release the lock. In my testing, I was able to reduce the amount of time spent in _raw_spin_lock_irq by .56% (average of 3 runs). The command I used to test this was: aio-stress -O -o 2 -o 3 -r 8 -d 128 -b 32 -i 32 -s 16384 I also tested the patch with various numbers of events passed to io_submit, and I ran the xfstests aio group of tests to ensure I didn't break anything. Signed-off-by: Jeff Moyer Cc: Daniel Ehrenberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/aio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/aio.h b/include/linux/aio.h index 2dcb72bff4b6..2314ad8b3c9c 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -117,6 +117,7 @@ struct kiocb { struct list_head ki_list; /* the aio core uses this * for cancellation */ + struct list_head ki_batch; /* batch allocation */ /* * If the aio_resfd field of the userspace iocb is not zero, -- cgit v1.2.2 From c1e2ee2dc436574880758b3836fc96935b774c32 Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Wed, 2 Nov 2011 13:40:29 -0700 Subject: memcg: replace ss->id_lock with a rwlock While back-porting Johannes Weiner's patch "mm: memcg-aware global reclaim" for an internal effort, we noticed a significant performance regression during page-reclaim heavy workloads due to high contention of the ss->id_lock. This lock protects idr map, and serializes calls to idr_get_next() in css_get_next() (which is used during the memcg hierarchy walk). Since idr_get_next() is just doing a look up, we need only serialize it with respect to idr_remove()/idr_get_new(). By making the ss->id_lock a rwlock, contention is greatly reduced and performance improves. Tested: cat a 256m file from a ramdisk in a 128m container 50 times on each core (one file + container per core) in parallel on a NUMA machine. Result is the time for the test to complete in 1 of the containers. Both kernels included Johannes' memcg-aware global reclaim patches. Before rwlock patch: 1710.778s After rwlock patch: 152.227s Signed-off-by: Andrew Bresticker Cc: Paul Menage Cc: Li Zefan Acked-by: KAMEZAWA Hiroyuki Cc: Ying Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index da7e4bc34e8c..1b7f9d525013 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -516,7 +516,7 @@ struct cgroup_subsys { struct list_head sibling; /* used when use_id == true */ struct idr idr; - spinlock_t id_lock; + rwlock_t id_lock; /* should be defined only by modular subsystems */ struct module *module; -- cgit v1.2.2 From 2150158b31a3290cc883cf6dea4f5d6803b6b811 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 28 Sep 2011 11:34:06 -0300 Subject: [media] V4L: add two new ioctl()s for multi-size videobuffer management A possibility to preallocate and initialise buffers of different sizes in V4L2 is required for an efficient implementation of a snapshot mode. This patch adds two new ioctl()s: VIDIOC_CREATE_BUFS and VIDIOC_PREPARE_BUF and defines respective data structures. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 225560c1a10f..cd512f07beed 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -653,6 +653,10 @@ struct v4l2_buffer { #define V4L2_BUF_FLAG_ERROR 0x0040 #define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */ #define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */ +#define V4L2_BUF_FLAG_PREPARED 0x0400 /* Buffer is prepared for queuing */ +/* Cache handling flags */ +#define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE 0x0800 +#define V4L2_BUF_FLAG_NO_CACHE_CLEAN 0x1000 /* * O V E R L A Y P R E V I E W @@ -2138,6 +2142,15 @@ struct v4l2_dbg_chip_ident { __u32 revision; /* chip revision, chip specific */ } __attribute__ ((packed)); +/* VIDIOC_CREATE_BUFS */ +struct v4l2_create_buffers { + __u32 index; /* output: buffers index...index + count - 1 have been created */ + __u32 count; + enum v4l2_memory memory; + struct v4l2_format format; /* "type" is used always, the rest if sizeimage == 0 */ + __u32 reserved[8]; +}; + /* * I O C T L C O D E S F O R V I D E O D E V I C E S * @@ -2228,6 +2241,11 @@ struct v4l2_dbg_chip_ident { #define VIDIOC_SUBSCRIBE_EVENT _IOW('V', 90, struct v4l2_event_subscription) #define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription) +/* Experimental, the below two ioctls may change over the next couple of kernel + versions */ +#define VIDIOC_CREATE_BUFS _IOWR('V', 92, struct v4l2_create_buffers) +#define VIDIOC_PREPARE_BUF _IOWR('V', 93, struct v4l2_buffer) + /* Reminder: when adding new ioctls please add support for them to drivers/media/video/v4l2-compat-ioctl32.c as well! */ -- cgit v1.2.2 From 09362ec25c3f42d00a4008d0622bfbca68e540f5 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 7 Sep 2011 18:07:23 -0300 Subject: [media] V4L: docbook documentation for struct v4l2_create_buffers Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index cd512f07beed..66945a6f628d 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -2142,12 +2142,20 @@ struct v4l2_dbg_chip_ident { __u32 revision; /* chip revision, chip specific */ } __attribute__ ((packed)); -/* VIDIOC_CREATE_BUFS */ +/** + * struct v4l2_create_buffers - VIDIOC_CREATE_BUFS argument + * @index: on return, index of the first created buffer + * @count: entry: number of requested buffers, + * return: number of created buffers + * @memory: buffer memory type + * @format: frame format, for which buffers are requested + * @reserved: future extensions + */ struct v4l2_create_buffers { - __u32 index; /* output: buffers index...index + count - 1 have been created */ + __u32 index; __u32 count; enum v4l2_memory memory; - struct v4l2_format format; /* "type" is used always, the rest if sizeimage == 0 */ + struct v4l2_format format; __u32 reserved[8]; }; -- cgit v1.2.2 From d26a6635b24210791cf4b71fd861738270c8cc3c Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Sun, 4 Sep 2011 19:08:54 -0300 Subject: [media] v4l: Add AUTO option for the V4L2_CID_POWER_LINE_FREQUENCY control V4L2_CID_POWER_LINE_FREQUENCY control allows applications to instruct a driver what is the power line frequency so an appropriate filter can be used by the device to cancel flicker by compensating the light intensity ripple. Currently in the menu we have entries for 50 Hz and 60 Hz and for entirely disabling the anti-flicker filter. However some devices are capable of automatically detecting the frequency, so add V4L2_CID_POWER_LINE_FREQUENCY_AUTO entry for them. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 66945a6f628d..4b752d5ee80e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -1169,6 +1169,7 @@ enum v4l2_power_line_frequency { V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0, V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1, V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2, + V4L2_CID_POWER_LINE_FREQUENCY_AUTO = 3, }; #define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25) #define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26) -- cgit v1.2.2 From 50e07f888cb24b55e0d8283f631907794dd757c2 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 25 Oct 2011 14:01:26 +0200 Subject: dt: add empty of_machine_is_compatible The patch adds an empty function for non-dt build, so that drivers migrating to dt can save some '#ifdef CONFIG_OF'. v3: New patch Signed-off-by: Stephen Warren Signed-off-by: Grant Likely --- include/linux/of.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 4386c5fee57c..0e89aa0bf07a 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -326,6 +326,11 @@ static inline int of_alias_get_id(struct device_node *np, const char *stem) return -ENOSYS; } +static inline int of_machine_is_compatible(const char *compat) +{ + return 0; +} + #define of_match_ptr(_ptr) NULL #define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ -- cgit v1.2.2 From 3af1f8a41feab47b232b0c3d3b2322426672480d Mon Sep 17 00:00:00 2001 From: Phil Edworthy Date: Mon, 3 Oct 2011 15:16:47 +0100 Subject: serial: sh-sci: Fix up SH-2A SCIF support. This fixes up support for SH-2(A) SCIFs by introducing a new regtype. As expected, it's close to the SH-4A SCIF with fifodata, but still different enough to warrant its own type. Fixes up a number of FIFO overflows and similar for both SH7203/SH7264. Signed-off-by: Phil Edworthy Tested-by: Federico Fuga Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 8bffe9ae2ca0..5f3939c67dd8 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -67,6 +67,7 @@ enum { SCIx_IRDA_REGTYPE, SCIx_SCIFA_REGTYPE, SCIx_SCIFB_REGTYPE, + SCIx_SH2_SCIF_FIFODATA_REGTYPE, SCIx_SH3_SCIF_REGTYPE, SCIx_SH4_SCIF_REGTYPE, SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE, -- cgit v1.2.2 From dd2c0ca1b153b555c09fd8e08f6842e12cf8e87b Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 19 Sep 2011 18:51:13 -0700 Subject: sh: clkfwk: add clk_rate_mult_range_round() This provides a clk_rate_mult_range_round() helper for use by some of the CPG PLL ranged multipliers, following the same approach as used by the div ranges. Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- include/linux/sh_clk.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 3ccf18648d0a..9237c299641c 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -94,6 +94,9 @@ int clk_rate_table_find(struct clk *clk, long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, unsigned int div_max, unsigned long rate); +long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min, + unsigned int mult_max, unsigned long rate); + long clk_round_parent(struct clk *clk, unsigned long target, unsigned long *best_freq, unsigned long *parent_freq, unsigned int div_min, unsigned int div_max); -- cgit v1.2.2 From 4e71c9545b9afaa47f178b7ffda0bc630c8ad2c7 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Thu, 3 Nov 2011 00:59:40 +0100 Subject: PM / Sleep: Remove unused symbol 'suspend_cpu_hotplug' Remove the suspend_cpu_hotplug declaration, which doesn't correspond to an existing variable. [rjw: Added the changelog.] Signed-off-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki --- include/linux/cpu.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpu.h b/include/linux/cpu.h index b1a635acf72a..6cb60fd2ea84 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -196,13 +196,9 @@ static inline void cpu_hotplug_driver_unlock(void) #endif /* CONFIG_HOTPLUG_CPU */ #ifdef CONFIG_PM_SLEEP_SMP -extern int suspend_cpu_hotplug; - extern int disable_nonboot_cpus(void); extern void enable_nonboot_cpus(void); #else /* !CONFIG_PM_SLEEP_SMP */ -#define suspend_cpu_hotplug 0 - static inline int disable_nonboot_cpus(void) { return 0; } static inline void enable_nonboot_cpus(void) {} #endif /* !CONFIG_PM_SLEEP_SMP */ -- cgit v1.2.2 From a96d69d1b02c4a526bd8c07e0cb10c129025c88c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 3 Nov 2011 10:12:27 +0100 Subject: PM / OPP: Fix build when CONFIG_PM_OPP is not set Commit 03ca370fbf7b76d6d002380dbdc2cdc2319f9c80 (PM / OPP: Add OPP availability change notifier) does not compile if CONFIG_PM_OPP is not set: arch/arm/plat-omap/omap-pm-noop.o: In function `opp_get_notifier': include/linux/opp.h:103: multiple definition of `opp_get_notifier' include/linux/opp.h:103: first defined here Also fix incorrect comment. Signed-off-by: Tony Lindgren Signed-off-by: Rafael J. Wysocki --- include/linux/opp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/opp.h b/include/linux/opp.h index 87a9208f8aec..ee94b33080c2 100644 --- a/include/linux/opp.h +++ b/include/linux/opp.h @@ -97,11 +97,11 @@ static inline int opp_disable(struct device *dev, unsigned long freq) return 0; } -struct srcu_notifier_head *opp_get_notifier(struct device *dev) +static inline struct srcu_notifier_head *opp_get_notifier(struct device *dev) { return ERR_PTR(-EINVAL); } -#endif /* CONFIG_PM */ +#endif /* CONFIG_PM_OPP */ #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) int opp_init_cpufreq_table(struct device *dev, -- cgit v1.2.2 From 6f35c4abd7f0294166a5e0ab0401fe7949b33034 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Thu, 3 Nov 2011 16:07:49 -0700 Subject: PM / Freezer: Reimplement wait_event_freezekillable using freezer_do_not_count/freezer_count Commit 27920651fe "PM / Freezer: Make fake_signal_wake_up() wake TASK_KILLABLE tasks too" updated fake_signal_wake_up() used by freezer to wake up KILLABLE tasks. Sending unsolicited wakeups to tasks in killable sleep is dangerous as there are code paths which depend on tasks not waking up spuriously from KILLABLE sleep. For example. sys_read() or page can sleep in TASK_KILLABLE assuming that wait/down/whatever _killable can only fail if we can not return to the usermode. TASK_TRACED is another obvious example. The offending commit was to resolve freezer hang during system PM operations caused by KILLABLE sleeps in network filesystems. wait_event_freezekillable(), which depends on the spurious KILLABLE wakeup, was added by f06ac72e92 "cifs, freezer: add wait_event_freezekillable and have cifs use it" to be used to implement killable & freezable sleeps in network filesystems. To prepare for reverting of 27920651fe, this patch reimplements wait_event_freezekillable() using freezer_do_not_count/freezer_count() so that it doesn't depend on the spurious KILLABLE wakeup. This isn't very nice but should do for now. [tj: Refreshed patch to apply to linus/master and updated commit description on Rafael's request.] Signed-off-by: Oleg Nesterov Signed-off-by: Tejun Heo Signed-off-by: Rafael J. Wysocki --- include/linux/freezer.h | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index a49b52934c55..a5386e3ee756 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -143,14 +143,9 @@ static inline void set_freezable_with_signal(void) #define wait_event_freezekillable(wq, condition) \ ({ \ int __retval; \ - do { \ - __retval = wait_event_killable(wq, \ - (condition) || freezing(current)); \ - if (__retval && !freezing(current)) \ - break; \ - else if (!(condition)) \ - __retval = -ERESTARTSYS; \ - } while (try_to_freeze()); \ + freezer_do_not_count(); \ + __retval = wait_event_killable(wq, (condition)); \ + freezer_count(); \ __retval; \ }) -- cgit v1.2.2 From 589665f5a6008dbce1d0af2cb93e94a80bf78151 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 4 Nov 2011 08:21:38 +0000 Subject: bonding: comparing a u8 with -1 is always false slave->duplex is a u8 type so the in bond_info_show_slave() when we check "if (slave->duplex == -1)", it's always false. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- include/linux/ethtool.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 45f00b61c096..de33de1e2052 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -1097,10 +1097,12 @@ struct ethtool_ops { #define SPEED_1000 1000 #define SPEED_2500 2500 #define SPEED_10000 10000 +#define SPEED_UNKNOWN -1 /* Duplex, half or full. */ #define DUPLEX_HALF 0x00 #define DUPLEX_FULL 0x01 +#define DUPLEX_UNKNOWN 0xff /* Which connector port. */ #define PORT_TP 0x00 -- cgit v1.2.2 From 19940b3d55c87d8089a8cb0fa8e5a9918a3846bd Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 19 Aug 2011 18:05:05 +0900 Subject: ASoC: Ensure we get an impedence reported for WM8958 jack detect Occasionally we may see an accessory reported before we have a stable impedance for the accessory. If this happens then reread the status in order to ensure that the handler can take the appropriate action for the status change. Signed-off-by: Mark Brown --- include/linux/mfd/wm8994/registers.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index fae295048a8b..83a9caec0e43 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -1962,6 +1962,21 @@ #define WM8958_MICB2_DISCH_SHIFT 0 /* MICB2_DISCH */ #define WM8958_MICB2_DISCH_WIDTH 1 /* MICB2_DISCH */ +/* + * R210 (0xD2) - Mic Detect 3 + */ +#define WM8958_MICD_LVL_MASK 0x07FC /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_SHIFT 2 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_WIDTH 9 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_VALID 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_MASK 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_SHIFT 1 /* MICD_VALID */ +#define WM8958_MICD_VALID_WIDTH 1 /* MICD_VALID */ +#define WM8958_MICD_STS 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_MASK 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_SHIFT 0 /* MICD_STS */ +#define WM8958_MICD_STS_WIDTH 1 /* MICD_STS */ + /* * R76 (0x4C) - Charge Pump (1) */ -- cgit v1.2.2 From 2449b8ba0745327c5fa49a8d9acffe03b2eded69 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 24 Oct 2011 15:12:28 +0200 Subject: module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree Use of the GPL or a compatible licence doesn't necessarily make the code any good. We already consider staging modules to be suspect, and this should also be true for out-of-tree modules which may receive very little review. Signed-off-by: Ben Hutchings Reviewed-by: Dave Jones Acked-by: Greg Kroah-Hartman Signed-off-by: Rusty Russell (patched oops-tracing.txt) --- include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 4c0d3b2fd5fc..e8b1597b5cf2 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -371,6 +371,7 @@ extern enum system_states { #define TAINT_WARN 9 #define TAINT_CRAP 10 #define TAINT_FIRMWARE_WORKAROUND 11 +#define TAINT_OOT_MODULE 12 extern const char hex_asc[]; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] -- cgit v1.2.2 From e978aa7d7d57d04eb5f88a7507c4fb98577def77 Mon Sep 17 00:00:00 2001 From: Deepthi Dharwar Date: Fri, 28 Oct 2011 16:20:09 +0530 Subject: cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state Cpuidle governor only suggests the state to enter using the governor->select() interface, but allows the low level driver to override the recommended state. The actual entered state may be different because of software or hardware demotion. Software demotion is done by the back-end cpuidle driver and can be accounted correctly. Current cpuidle code uses last_state field to capture the actual state entered and based on that updates the statistics for the state entered. Ideally the driver enter routine should update the counters, and it should return the state actually entered rather than the time spent there. The generic cpuidle code should simply handle where the counters live in the sysfs namespace, not updating the counters. Reference: https://lkml.org/lkml/2011/3/25/52 Signed-off-by: Deepthi Dharwar Signed-off-by: Trinabh Gupta Tested-by: Jean Pihet Reviewed-by: Kevin Hilman Acked-by: Arjan van de Ven Acked-by: Kevin Hilman Signed-off-by: Len Brown --- include/linux/cpuidle.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index b51629e15cfc..8da811bcdbdb 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -42,7 +42,7 @@ struct cpuidle_state { unsigned long long time; /* in US */ int (*enter) (struct cpuidle_device *dev, - struct cpuidle_state *state); + int index); }; /* Idle State Flags */ @@ -87,13 +87,12 @@ struct cpuidle_device { int state_count; struct cpuidle_state states[CPUIDLE_STATE_MAX]; struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX]; - struct cpuidle_state *last_state; struct list_head device_list; struct kobject kobj; struct completion kobj_unregister; void *governor_data; - struct cpuidle_state *safe_state; + int safe_state_index; int (*prepare) (struct cpuidle_device *dev); }; @@ -169,7 +168,7 @@ struct cpuidle_governor { void (*disable) (struct cpuidle_device *dev); int (*select) (struct cpuidle_device *dev); - void (*reflect) (struct cpuidle_device *dev); + void (*reflect) (struct cpuidle_device *dev, int index); struct module *owner; }; -- cgit v1.2.2 From b25edc42bfb9602f0503474b2c94701d5536ce60 Mon Sep 17 00:00:00 2001 From: Deepthi Dharwar Date: Fri, 28 Oct 2011 16:20:24 +0530 Subject: cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare() The cpuidle_device->prepare() mechanism causes updates to the cpuidle_state[].flags, setting and clearing CPUIDLE_FLAG_IGNORE to tell the governor not to chose a state on a per-cpu basis at run-time. State demotion is now handled by the driver and it returns the actual state entered. Hence, this mechanism is not required. Also this removes per-cpu flags from cpuidle_state enabling it to be made global. Reference: https://lkml.org/lkml/2011/3/25/52 Signed-off-by: Deepthi Dharwar Signed-off-by: Trinabh Gupta Tested-by: Jean Pihet Acked-by: Arjan van de Ven Reviewed-by: Kevin Hilman Signed-off-by: Len Brown --- include/linux/cpuidle.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 8da811bcdbdb..c6d85cf90eb2 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -47,7 +47,6 @@ struct cpuidle_state { /* Idle State Flags */ #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ -#define CPUIDLE_FLAG_IGNORE (0x100) /* ignore during this idle period */ #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) @@ -93,8 +92,6 @@ struct cpuidle_device { struct completion kobj_unregister; void *governor_data; int safe_state_index; - - int (*prepare) (struct cpuidle_device *dev); }; DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices); -- cgit v1.2.2 From 4202735e8ab6ecfb0381631a0d0b58fefe0bd4e2 Mon Sep 17 00:00:00 2001 From: Deepthi Dharwar Date: Fri, 28 Oct 2011 16:20:33 +0530 Subject: cpuidle: Split cpuidle_state structure and move per-cpu statistics fields This is the first step towards global registration of cpuidle states. The statistics used primarily by the governor are per-cpu and have to be split from rest of the fields inside cpuidle_state, which would be made global i.e. single copy. The driver_data field is also per-cpu and moved. Signed-off-by: Deepthi Dharwar Signed-off-by: Trinabh Gupta Tested-by: Jean Pihet Reviewed-by: Kevin Hilman Acked-by: Arjan van de Ven Acked-by: Kevin Hilman Signed-off-by: Len Brown --- include/linux/cpuidle.h | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index c6d85cf90eb2..0156540b3f79 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -28,19 +28,22 @@ struct cpuidle_device; * CPUIDLE DEVICE INTERFACE * ****************************/ +struct cpuidle_state_usage { + void *driver_data; + + unsigned long long usage; + unsigned long long time; /* in US */ +}; + struct cpuidle_state { char name[CPUIDLE_NAME_LEN]; char desc[CPUIDLE_DESC_LEN]; - void *driver_data; unsigned int flags; unsigned int exit_latency; /* in US */ unsigned int power_usage; /* in mW */ unsigned int target_residency; /* in US */ - unsigned long long usage; - unsigned long long time; /* in US */ - int (*enter) (struct cpuidle_device *dev, int index); }; @@ -52,26 +55,27 @@ struct cpuidle_state { /** * cpuidle_get_statedata - retrieves private driver state data - * @state: the state + * @st_usage: the state usage statistics */ -static inline void * cpuidle_get_statedata(struct cpuidle_state *state) +static inline void *cpuidle_get_statedata(struct cpuidle_state_usage *st_usage) { - return state->driver_data; + return st_usage->driver_data; } /** * cpuidle_set_statedata - stores private driver state data - * @state: the state + * @st_usage: the state usage statistics * @data: the private data */ static inline void -cpuidle_set_statedata(struct cpuidle_state *state, void *data) +cpuidle_set_statedata(struct cpuidle_state_usage *st_usage, void *data) { - state->driver_data = data; + st_usage->driver_data = data; } struct cpuidle_state_kobj { struct cpuidle_state *state; + struct cpuidle_state_usage *state_usage; struct completion kobj_unregister; struct kobject kobj; }; @@ -85,6 +89,7 @@ struct cpuidle_device { int last_residency; int state_count; struct cpuidle_state states[CPUIDLE_STATE_MAX]; + struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX]; struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX]; struct list_head device_list; -- cgit v1.2.2 From 46bcfad7a819bd17ac4e831b04405152d59784ab Mon Sep 17 00:00:00 2001 From: Deepthi Dharwar Date: Fri, 28 Oct 2011 16:20:42 +0530 Subject: cpuidle: Single/Global registration of idle states This patch makes the cpuidle_states structure global (single copy) instead of per-cpu. The statistics needed on per-cpu basis by the governor are kept per-cpu. This simplifies the cpuidle subsystem as state registration is done by single cpu only. Having single copy of cpuidle_states saves memory. Rare case of asymmetric C-states can be handled within the cpuidle driver and architectures such as POWER do not have asymmetric C-states. Having single/global registration of all the idle states, dynamic C-state transitions on x86 are handled by the boot cpu. Here, the boot cpu would disable all the devices, re-populate the states and later enable all the devices, irrespective of the cpu that would receive the notification first. Reference: https://lkml.org/lkml/2011/4/25/83 Signed-off-by: Deepthi Dharwar Signed-off-by: Trinabh Gupta Tested-by: Jean Pihet Reviewed-by: Kevin Hilman Acked-by: Arjan van de Ven Acked-by: Kevin Hilman Signed-off-by: Len Brown --- include/linux/cpuidle.h | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 0156540b3f79..c90418822f40 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -22,6 +22,7 @@ #define CPUIDLE_DESC_LEN 32 struct cpuidle_device; +struct cpuidle_driver; /**************************** @@ -45,6 +46,7 @@ struct cpuidle_state { unsigned int target_residency; /* in US */ int (*enter) (struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index); }; @@ -83,12 +85,10 @@ struct cpuidle_state_kobj { struct cpuidle_device { unsigned int registered:1; unsigned int enabled:1; - unsigned int power_specified:1; unsigned int cpu; int last_residency; int state_count; - struct cpuidle_state states[CPUIDLE_STATE_MAX]; struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX]; struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX]; @@ -96,7 +96,6 @@ struct cpuidle_device { struct kobject kobj; struct completion kobj_unregister; void *governor_data; - int safe_state_index; }; DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices); @@ -120,6 +119,11 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev) struct cpuidle_driver { char name[CPUIDLE_NAME_LEN]; struct module *owner; + + unsigned int power_specified:1; + struct cpuidle_state states[CPUIDLE_STATE_MAX]; + int state_count; + int safe_state_index; }; #ifdef CONFIG_CPU_IDLE @@ -166,10 +170,13 @@ struct cpuidle_governor { struct list_head governor_list; unsigned int rating; - int (*enable) (struct cpuidle_device *dev); - void (*disable) (struct cpuidle_device *dev); + int (*enable) (struct cpuidle_driver *drv, + struct cpuidle_device *dev); + void (*disable) (struct cpuidle_driver *drv, + struct cpuidle_device *dev); - int (*select) (struct cpuidle_device *dev); + int (*select) (struct cpuidle_driver *drv, + struct cpuidle_device *dev); void (*reflect) (struct cpuidle_device *dev, int index); struct module *owner; -- cgit v1.2.2 From 1a51cfdc4516a6e1f2c1f8a579630a027c30331a Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Mon, 7 Nov 2011 23:54:53 +0100 Subject: PM / devfreq: fix private_data The "private_date" field in struct devfreq_dev_status almost certainly wants to be "private_data"; since there are no in-tree users of this functionality, now seems like an easy time to make the fix. Signed-off-by: Jonathan Corbet Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index afb94583960c..98ce8124b1cc 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -41,7 +41,7 @@ struct devfreq_dev_status { unsigned long total_time; unsigned long busy_time; unsigned long current_frequency; - void *private_date; + void *private_data; }; /** -- cgit v1.2.2 From 816af3bb5022c1468b3d826c645ddc2cac45bc97 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 3 Nov 2011 14:45:48 +0800 Subject: hwspinlock: Don't return a value in __hwspin_unlock Fix below build warning: CC arch/arm/mach-omap2/hwspinlock.o In file included from arch/arm/mach-omap2/hwspinlock.c:22: include/linux/hwspinlock.h: In function '__hwspin_unlock': include/linux/hwspinlock.h:121: warning: 'return' with a value, in function returning void Signed-off-by: Axel Lin Signed-off-by: Ohad Ben-Cohen --- include/linux/hwspinlock.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h index 08a2fee40659..aad6bd4b3efd 100644 --- a/include/linux/hwspinlock.h +++ b/include/linux/hwspinlock.h @@ -118,7 +118,6 @@ int __hwspin_trylock(struct hwspinlock *hwlock, int mode, unsigned long *flags) static inline void __hwspin_unlock(struct hwspinlock *hwlock, int mode, unsigned long *flags) { - return 0; } static inline int hwspin_lock_get_id(struct hwspinlock *hwlock) -- cgit v1.2.2 From c9703765f3d5ab27909011dee4a05affe48e4442 Mon Sep 17 00:00:00 2001 From: Keng-Yu Lin Date: Wed, 9 Nov 2011 01:47:36 -0500 Subject: [libata] ahci: Add ASMedia ASM1061 support Signed-off-by: Keng-Yu Lin Signed-off-by: Jeff Garzik --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3fdf251389de..172ba70306d1 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2405,6 +2405,8 @@ #define PCI_VENDOR_ID_AZWAVE 0x1a3b +#define PCI_VENDOR_ID_ASMEDIA 0x1b21 + #define PCI_VENDOR_ID_TEKRAM 0x1de1 #define PCI_DEVICE_ID_TEKRAM_DC290 0xdc29 -- cgit v1.2.2 From e0e20753c15fc418d94fee826af394907df856d8 Mon Sep 17 00:00:00 2001 From: Barry Song Date: Thu, 27 Oct 2011 20:38:24 -0700 Subject: pinctrl: fix "warning: 'struct pinctrl_dev' declared inside parameter list" when pinctl subsystem is not selected, when compiling drivers including the include/linux/pinctrl/pinctrl.h, we will get the warning as below: In file included from include/linux/pinctrl/pinmux.h:17, from drivers/tty/serial/sirfsoc_uart.c:25: include/linux/pinctrl/pinctrl.h:126: warning: 'struct pinctrl_dev' declared inside parameter list include/linux/pinctrl/pinctrl.h:126: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Barry Song Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 3605e947fa90..04c011038f32 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -121,6 +121,7 @@ extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else +struct pinctrl_dev; /* Sufficiently stupid default function when pinctrl is not in use */ static inline bool pin_is_valid(struct pinctrl_dev *pctldev, int pin) -- cgit v1.2.2 From 79e7066415a8b12adbeacc41b3dc44423534b8be Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 11 Nov 2011 16:11:41 +0900 Subject: sh: clkfwk: Kill off remaining debugfs cruft. Now that all of the named string association with clocks has been migrated to clkdev lookups there's no meaningful named topology that can be constructed for a debugfs tree view. Get rid of the left over bits, and shrink struct clk a bit in the process. Signed-off-by: Paul Mundt --- include/linux/sh_clk.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 9237c299641c..a20831cf336a 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -52,7 +52,6 @@ struct clk { unsigned long arch_flags; void *priv; - struct dentry *dentry; struct clk_mapping *mapping; struct cpufreq_frequency_table *freq_table; unsigned int nr_freqs; -- cgit v1.2.2 From bd8d0cbaa00883c84741b98264f8318cdade9c71 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:23 -0800 Subject: ARM: mach-shmobile: move helper macro PORT_DATA_xx to sh_pfc.h This patch move PORT_DATA_xx helper macro to sh_pfc.h. and pfc-sh7372.c used it Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- include/linux/sh_pfc.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index bc8c9208f7e2..5585f280dc1d 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -104,4 +104,40 @@ struct pinmux_info { int register_pinmux(struct pinmux_info *pip); int unregister_pinmux(struct pinmux_info *pip); +/* helper macro for pinmux_enum_t */ +#define PORT_DATA_I(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) + +#define PORT_DATA_I_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PD) + +#define PORT_DATA_I_PU(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PU) + +#define PORT_DATA_I_PU_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) + +#define PORT_DATA_O(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT) + +#define PORT_DATA_IO(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN) + +#define PORT_DATA_IO_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PD) + +#define PORT_DATA_IO_PU(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PU) + +#define PORT_DATA_IO_PU_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) + + #endif /* __SH_PFC_H */ -- cgit v1.2.2 From 972c3fb69cd1cd8d549b8a06ce42611eab405c20 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:33 -0800 Subject: ARM: mach-shmobile: move helper macro PORT_xx to sh_pfc.h This patch moves PORT_xx helper macro to sh_pfc.h, and it expects CPU_ALL_PORT() macro for each CPU Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- include/linux/sh_pfc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 5585f280dc1d..5f6322ac63e7 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -104,6 +104,29 @@ struct pinmux_info { int register_pinmux(struct pinmux_info *pip); int unregister_pinmux(struct pinmux_info *pip); +/* helper macro for port */ +#define PORT_1(fn, pfx, sfx) fn(pfx, sfx) + +#define PORT_10(fn, pfx, sfx) \ + PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx), \ + PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx), \ + PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx), \ + PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx), \ + PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx) + +#define PORT_90(fn, pfx, sfx) \ + PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx), \ + PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx), \ + PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx), \ + PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx), \ + PORT_10(fn, pfx##9, sfx) + +#define _PORT_ALL(pfx, sfx) pfx##_##sfx +#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) +#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str) +#define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused) +#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) + /* helper macro for pinmux_enum_t */ #define PORT_DATA_I(nr) \ PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) -- cgit v1.2.2 From 9b49139b34a66907662e0be8efe79316dc63f8e0 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:43 -0800 Subject: ARM: mach-shmobile: move helper macro PORTCR to sh_pfc.h Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- include/linux/sh_pfc.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 5f6322ac63e7..8446789216e5 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -162,5 +162,22 @@ int unregister_pinmux(struct pinmux_info *pip); PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) +/* helper macro for top 4 bits in PORTnCR */ +#define _PCRH(in, in_pd, in_pu, out) \ + 0, (out), (in), 0, \ + 0, 0, 0, 0, \ + 0, 0, (in_pd), 0, \ + 0, 0, (in_pu), 0 + +#define PORTCR(nr, reg) \ + { \ + PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ + _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ + PORT##nr##_IN_PU, PORT##nr##_OUT), \ + PORT##nr##_FN0, PORT##nr##_FN1, \ + PORT##nr##_FN2, PORT##nr##_FN3, \ + PORT##nr##_FN4, PORT##nr##_FN5, \ + PORT##nr##_FN6, PORT##nr##_FN7 } \ + } #endif /* __SH_PFC_H */ -- cgit v1.2.2 From 25a0bc2dfc2ea732f40af2dae52426ead66ae76e Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 7 Dec 2011 11:24:20 -0800 Subject: power_supply: add SCOPE attribute to power supplies This adds a "scope" attribute to a power_supply, which indicates how much of the system it powers. It appears in sysfs as "scope" or in the uevent file as POWER_SUPPLY_SCOPE=. There are presently three possible values: Unknown - unknown power topology System - the power supply powers the whole system Device - it powers a specific device, or tree of devices A power supply which doesn't have a "scope" attribute should be assumed to have "System" scope. In general, usermode should assume that loss of all System-scoped power supplies will power off the whole system, but any single one is sufficient to power the system. Signed-off-by: Jeremy Fitzhardinge Cc: Richard Hughes --- include/linux/power_supply.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 204c18dfdc9e..040a7b08e7c7 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -74,6 +74,12 @@ enum { POWER_SUPPLY_CAPACITY_LEVEL_FULL, }; +enum { + POWER_SUPPLY_SCOPE_UNKNOWN = 0, + POWER_SUPPLY_SCOPE_SYSTEM, + POWER_SUPPLY_SCOPE_DEVICE, +}; + enum power_supply_property { /* Properties of type `int' */ POWER_SUPPLY_PROP_STATUS = 0, @@ -116,6 +122,7 @@ enum power_supply_property { POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */ + POWER_SUPPLY_PROP_SCOPE, /* Properties of type `const char *' */ POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, -- cgit v1.2.2 From 8351665195cec6d2b73cce8b66f02d6dde246a8e Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 7 Dec 2011 09:15:45 -0800 Subject: power_supply: allow a power supply to explicitly point to powered device If a power supply has a scope of "Device", then allow the power supply to indicate what device it actually powers. This is represented in the power supply's sysfs directory as a symlink named "powers", which points to the sysfs directory of the powered device. If the device has children, then the sub-devices are also powered by the same power supply. Signed-off-by: Jeremy Fitzhardinge Cc: Richard Hughes --- include/linux/power_supply.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 040a7b08e7c7..2e3c8279b3b0 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -218,6 +218,7 @@ static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } extern int power_supply_register(struct device *parent, struct power_supply *psy); extern void power_supply_unregister(struct power_supply *psy); +extern int power_supply_powers(struct power_supply *psy, struct device *dev); /* For APM emulation, think legacy userspace. */ extern struct class *power_supply_class; -- cgit v1.2.2