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* ocfs2: timer to queue scan of all orphan slotsSrinivas Eeda2009-06-03
| | | | | | | | | | | | | | | | | | | | | | | | When a dentry is unlinked, the unlinking node takes an EX on the dentry lock before moving the dentry to the orphan directory. Other nodes that have this dentry in cache have a PR on the same dentry lock. When the EX is requested, the other nodes flag the corresponding inode as MAYBE_ORPHANED during downconvert. The inode is finally deleted when the last node to iput the inode sees that i_nlink==0 and the MAYBE_ORPHANED flag is set. A problem arises if a node is forced to free dentry locks because of memory pressure. If this happens, the node will no longer get downconvert notifications for the dentries that have been unlinked on another node. If it also happens that node is actively using the corresponding inode and happens to be the one performing the last iput on that inode, it will fail to delete the inode as it will not have the MAYBE_ORPHANED flag set. This patch fixes this shortcoming by introducing a periodic scan of the orphan directories to delete such inodes. Care has been taken to distribute the workload across the cluster so that no one node has to perform the task all the time. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Correct ordering of ip_alloc_sem and localloc locks for directoriesJan Kara2009-06-03
| | | | | | | | | | We use ordering ip_alloc_sem -> local alloc locks in ocfs2_write_begin(). So change lock ordering in ocfs2_extend_dir() and ocfs2_expand_inline_dir() to also use this lock ordering. Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix possible deadlock in quota recoveryJan Kara2009-06-03
| | | | | | | | | | | | | In ocfs2_finish_quota_recovery() we acquired global quota file lock and started recovering local quota file. During this process we need to get quota structures, which calls ocfs2_dquot_acquire() which gets global quota file lock again. This second lock can block in case some other node has requested the quota file lock in the mean time. Fix the problem by moving quota file locking down into the function where it is really needed. Then dqget() or dqput() won't be called with the lock held. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix possible deadlock with quotas in ocfs2_setattr()Jan Kara2009-06-03
| | | | | | | | | | | | | | | | | | | We called vfs_dq_transfer() with global quota file lock held. This can lead to deadlocks as if vfs_dq_transfer() has to allocate new quota structure, it calls ocfs2_dquot_acquire() which tries to get quota file lock again and this can block if another node requested the lock in the mean time. Since we have to call vfs_dq_transfer() with transaction already started and quota file lock ranks above the transaction start, we cannot just rely on ocfs2_dquot_acquire() or ocfs2_dquot_release() on getting the lock if they need it. We fix the problem by acquiring pointers to all quota structures needed by vfs_dq_transfer() already before calling the function. By this we are sure that all quota structures are properly allocated and they can be freed only after we drop references to them. Thus we don't need quota file lock anywhere inside vfs_dq_transfer(). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix lock inversion in ocfs2_local_read_info()Jan Kara2009-06-03
| | | | | | | | | | | | | This function is called with dqio_mutex held but it has to acquire lock from global quota file which ranks above this lock. This is not deadlockable lock inversion since this code path is take only during mount when noone else can race with us but let's clean this up to silence lockdep. We just drop the dqio_mutex in the beginning of the function and reacquire it in the end since we don't need it - noone can race with us at this moment. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix possible deadlock in ocfs2_global_read_dquot()Jan Kara2009-06-03
| | | | | | | | | | It is not possible to get a read lock and then try to get the same write lock in one thread as that can block on downconvert being requested by other node leading to deadlock. So first drop the quota lock for reading and only after that get it for writing. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: update comments in masklog.hColy Li2009-05-05
| | | | | | | | | | | | In the mainline ocfs2 code, the interface for masklog is in files under /sys/fs/o2cb/masklog, but the comments in fs/ocfs2/cluster/masklog.h reference the old /proc interface. They are out of date. This patch modifies the comments in cluster/masklog.h, which also provides a bash script example on how to change the log mask bits. Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Don't printk the error when listing too many xattrs.Tao Ma2009-05-05
| | | | | | | | | | | | | | | | | | Currently the kernel defines XATTR_LIST_MAX as 65536 in include/linux/limits.h. This is the largest buffer that is used for listing xattrs. But with ocfs2 xattr tree, we actually have no limit for the number. If filesystem has more names than can fit in the buffer, the kernel logs will be pollluted with something like this when listing: (27738,0):ocfs2_iterate_xattr_buckets:3158 ERROR: status = -34 (27738,0):ocfs2_xattr_tree_list_index_block:3264 ERROR: status = -34 So don't print "ERROR" message as this is not an ocfs2 error. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds2009-05-02
|\ | | | | | | | | | | | | | | * 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: fix getbmap vs mmap deadlock xfs: a couple getbmap cleanups xfs: add more checks to superblock validation xfs_file_last_byte() needs to acquire ilock
| * xfs: fix getbmap vs mmap deadlockChristoph Hellwig2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xfs_getbmap (or rather the formatters called by it) copy out the getbmap structures under the ilock, which can deadlock against mmap. This has been reported via bugzilla a while ago (#717) and has recently also shown up via lockdep. So allocate a temporary buffer to format the kernel getbmap structures into and then copy them out after dropping the locks. A little problem with this is that we limit the number of extents we can copy out by the maximum allocation size, but I see no real way around that. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Felix Blyakher <felixb@sgi.com>
| * xfs: a couple getbmap cleanupsChristoph Hellwig2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | - reshuffle various conditionals for data vs attr fork to make the code more readable - do fine-grainded goto-based error handling - exit early from conditionals instead of keeping a long else branch around - allow kmem_alloc to fail Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Felix Blyakher <felixb@sgi.com>
| * xfs: add more checks to superblock validationOlaf Weber2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | There had been reports where xfs filesystem was randomly corrupted with fsfuzzer, and xfs failed to handle it gracefully. This patch fixes couple of reported problem by providing additional checks in the superblock validation routine. Signed-off-by: Olaf Weber <olaf@sgi.com> Reviewed-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Felix Blyakher <felixb@sgi.com>
| * xfs_file_last_byte() needs to acquire ilockLachlan McIlroy2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We had some systems crash with this stack: [<a00000010000cb20>] ia64_leave_kernel+0x0/0x280 [<a00000021291ca00>] xfs_bmbt_get_startoff+0x0/0x20 [xfs] [<a0000002129080b0>] xfs_bmap_last_offset+0x210/0x280 [xfs] [<a00000021295b010>] xfs_file_last_byte+0x70/0x1a0 [xfs] [<a00000021295b200>] xfs_itruncate_start+0xc0/0x1a0 [xfs] [<a0000002129935f0>] xfs_inactive_free_eofblocks+0x290/0x460 [xfs] [<a000000212998fb0>] xfs_release+0x1b0/0x240 [xfs] [<a0000002129ad930>] xfs_file_release+0x70/0xa0 [xfs] [<a000000100162ea0>] __fput+0x1a0/0x420 [<a000000100163160>] fput+0x40/0x60 The problem here is that xfs_file_last_byte() does not acquire the inode lock and can therefore race with another thread that is modifying the extext list. While xfs_bmap_last_offset() is trying to lookup what was the last extent some extents were merged and the extent list shrunk so the index we lookup is now beyond the end of the extent list and potentially in a freed buffer. Signed-off-by: Lachlan McIlroy <lmcilroy@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Felix Blyakher <felixb@sgi.com>
* | Move dtc and libfdt sources from arch/powerpc/boot to scripts/dtcDavid Gibson2009-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc kernel always requires an Open Firmware like device tree to supply device information. On systems without OF, this comes from a flattened device tree blob. This blob is usually generated by dtc, a tool which compiles a text description of the device tree into the flattened format used by the kernel. Sometimes, the bootwrapper makes small changes to the pre-compiled device tree blob (e.g. filling in the size of RAM). To do this it uses the libfdt library. Because these are only used on powerpc, the code for both these tools is included under arch/powerpc/boot (these were imported and are periodically updated from the upstream dtc tree). However, the microblaze architecture, currently being prepared for merging to mainline also uses dtc to produce device tree blobs. A few other archs have also mentioned some interest in using dtc. Therefore, this patch moves dtc and libfdt from arch/powerpc into scripts, where it can be used by any architecture. The vast bulk of this patch is a literal move, the rest is adjusting the various Makefiles to use dtc and libfdt correctly from their new locations. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2009-05-02
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/configfs * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/configfs: configfs: Fix Trivial Warning in fs/configfs/symlink.c
| * | configfs: Fix Trivial Warning in fs/configfs/symlink.cSubrata Modak2009-04-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I observed the following build warning with fs/configfs/symlink.c: fs/configfs/symlink.c: In function 'configfs_symlink': fs/configfs/symlink.c:138: warning: 'target_item' may be used uninitialized in this function Here is a small fix for this. Cc: Patrick Mochel <mochel@osdl.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Sachin P Sant <sachinp@linux.vnet.ibm.com> Signed-Off-By: Subrata Modak <subrata@linux.vnet.ibm.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-05-02
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ide-cd: fix REQ_QUIET tests in cdrom_decode_status Fix up trivial conflicts in include/linux/blkdev.h
| * | | ide-cd: fix REQ_QUIET tests in cdrom_decode_statusBorislav Petkov2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original patch (dfa4411cc3a690011cab90e9a536938795366cf9) was buggy. This is a more proper fix which introduces blk_rq_quiet() macro alleviating the need for dumb, too short caching variables. Thanks to Helge Deller and Bart for debugging this. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Reported-and-tested-by: Helge Deller <deller@gmx.de> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2009-05-02
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: (45 commits) [ARM] 5489/1: ARM errata: Data written to the L2 cache can be overwritten with stale data [ARM] 5490/1: ARM errata: Processor deadlock when a false hazard is created [ARM] 5487/1: ARM errata: Stale prediction on replaced interworking branch [ARM] 5488/1: ARM errata: Invalidation of the Instruction Cache operation can fail davinci: DM644x: NAND: update partitioning davinci: update DM644x support in preparation for more SoCs davinci: DM644x: rename board file davinci: update pin-multiplexing support davinci: serial: generalize for more SoCs davinci: DM355 IRQ Definitions davinci: DM646x: add interrupt number and priorities davinci: PSC: Clear bits in MDCTL reg before setting new bits davinci: gpio bugfixes davinci: add EDMA driver davinci: timers: use clk_get_rate() [ARM] pxa/littleton: add missing da9034 touchscreen support [ARM] pxa/zylonite: configure GPIO18/19 correctly, used by 2 GPIO expanders [ARM] pxa/zylonite: fix the issue of unused SDATA_IN_1 pin get AC97 not working [ARM] pxa: make ads7846 on corgi and spitz to sync on HSYNC [ARM] pxa: remove unused CPU_FREQ_PXA Kconfig symbol ...
| * | | | [ARM] 5489/1: ARM errata: Data written to the L2 cache can be overwritten ↵Catalin Marinas2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with stale data This patch is a workaround for the 460075 Cortex-A8 (r2p0) erratum. It configures the L2 cache auxiliary control register so that the Write Allocate mode for the L2 cache is disabled. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | [ARM] 5490/1: ARM errata: Processor deadlock when a false hazard is createdCatalin Marinas2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a workaround for the 458693 Cortex-A8 (r2p0) erratum. It sets the corresponding bits in the auxiliary control register so that the PLD instruction becomes a NOP. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | [ARM] 5487/1: ARM errata: Stale prediction on replaced interworking branchCatalin Marinas2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the workaround for the 430973 Cortex-A8 (r1p0..r1p2) erratum. The BTAC/BTB is now flushed at every context switch. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | [ARM] 5488/1: ARM errata: Invalidation of the Instruction Cache operation ↵Catalin Marinas2009-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | can fail This patch implements the recommended workaround for erratum 411920 (ARM1136, ARM1156, ARM1176). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | Merge branch 'fix' of ↵Russell King2009-04-28
| |\ \ \ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
| | * | | | [ARM] pxa/littleton: add missing da9034 touchscreen supportEric Miao2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa/zylonite: configure GPIO18/19 correctly, used by 2 GPIO expandersEric Miao2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa/zylonite: fix the issue of unused SDATA_IN_1 pin get AC97 not workingEric Miao2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GPIO17_SDATA_IN_1 and GPIO36_SDATA_IN_1 are originally designed for the 2nd codec but unused on the board, yet they are initialized incorrectly by the bootloader as the SDATA_IN_1 alternate function, thus causing AC97 fail to work. Fix this issue by configuring these pins as normal GPIO to avoid the noise from these pins being treated as signals from the 2nd codec. Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa: make ads7846 on corgi and spitz to sync on HSYNCEric Miao2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa: remove unused CPU_FREQ_PXA Kconfig symbolPhilipp Zabel2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpufreq drivers for pxa2xx/3xx are now built-in automatically as soon as CPU_FREQ is enabled. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa: remove duplicate select statements from KconfigGuennadi Liakhovetski2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ARCH_PXA selects HAVE_CLK and COMMON_CLKDEV twice in arch/arm/Kconfig. Remove the second entry. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Eric Miao <eric.miao@marvell.com>
| | * | | | [ARM] pxa: fix issue of muxed GPIO irq_chip functions touching non-muxed GPIOsEric Miao2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pxa_gpio_irq_type() and pxa_unmask_muxed_gpio() will touch non-muxed GPIOs (0 and 1 on PXA2xx/PXA3xx) bits in GRERx and GFERx, which is incorrect. Actually, only those bits should get updated if the corresponding bits are set in c->irq_mask as well. Fix this by updating only those relevant bits. Reported-and-tested-by: Daniel Ribeiro <drwyrm@gmail.com> Signed-off-by: Eric Miao <eric.miao@marvell.com>
| * | | | | Merge branch 'for-rmk' of ↵Russell King2009-04-27
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
| | * | | | | davinci: DM644x: NAND: update partitioningDavid Brownell2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update NAND partitioning for the dm6446 evm, unmasking the hidden data at the beginning and letting the kernel be updated from Linux. - This is boot-compatible with TI's software (U-Boot 1.20 and both the 2.6.10 and 2.6.18 kernels), in terms of startup and loading kernels from flash. - In the same way, it's also boot-compatible with mainline U-Boot, which stores U-Boot params in block 0 not block 16. - It's not quite compatible with systems that previously used NAND partitions to hold (filesystem) data. The compatibilities are a bit different based on which kernel was used previously + Users of TI/MV kernels no longer see mtd2 "params" (mainline u-boot env is in a different place) * Filesystem is now mtd2 ... vs mtd3 + Users of GIT kernels now see mtd0 and mtd1 partitions * Filesystem partition starts 640 KBytes earlier * Filesystem is now mtd2 ... vs mtd0 * Linux now *uses* the flash-resident BBT * Removes annoying slowdown/hiccup during boot * Potentially ~64KB less space available with TI/MV kernels If you *used* NAND partitions from Linux, there is no solution that's fully compatible with all previous kernels in those respects ... ergo this "best compromise". It'd be good to back back up the filesystem data; or, carry your own backwards-compatibility patch for awhile. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: update DM644x support in preparation for more SoCsKevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rework DM644x code into SoC specific and board specific parts. This is also to generalize the structure a bit so it's easier to add support for new SoCs in the DaVinci family. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: DM644x: rename board fileKevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename DM6446 EVM board file, no functional changes. Code is updated and reworked in following patch. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: update pin-multiplexing supportKevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update MUX support to be more general and useful across multiple SoCs in the DaVinci family. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: serial: generalize for more SoCsKevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: DM355 IRQ Definitionss-paulraj@ti.com2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding IRQ defintions for DaVinci DM355 and default interrupt priorities for DM355 Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: DM646x: add interrupt number and prioritiesSudhakar Rajashekhara2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: PSC: Clear bits in MDCTL reg before setting new bitsMark A. Greer2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clear any set bits in the 'NEXT' field of the MDCTL register in the Power and Sleep Controller (PSC) before setting any new bits. This also allows some minor cleanup by removing some no longer needed lines of code. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: gpio bugfixesDavid Brownell2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the DaVinci GPIO code to work better on non-dm6446 parts, notably the dm355: - Only handle the number of GPIOs the chip actually has. So for example on dm6467, GPIO-42 is the last GPIO, and trying to use GPIO-43 now fails cleanly; or GPIO-72 on dm6446. - Enable GPIO interrupts on each 16-bit GPIO-irq bank ... previously, only the first five were enabled, so GPIO-80 and above (on dm355) wouldn't trigger IRQs. - Use the right IRQ for each GPIO bank. The wrong values were used for dm355 chips, so GPIO IRQs got routed incorrectly. - Handle up to four pairs of 16-bit GPIO banks ... previously only three were handled, so accessing GPIO-96 and up (e.g. on dm355) would oops. - Update several comments that were dm6446-specific. Verified by receiving GPIO-1 (dm9000) and GPIO-5 (msp430) IRQs on the DM355 EVM. One thing this doesn't do is handle the way some of the GPIO numbers on dm6467 are reserved but aren't valid as GPIOs. Some bitmap logic could fix that if needed. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: add EDMA driverKevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original code for 2.6.10 and 2.6.28 series done by Texas Instruments and MontaVista, but major updates and rework done by Troy Kisky and David Brownell. Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Cc: Troy Kisky <troy.kisky@boundarydevices.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: timers: use clk_get_rate()Kevin Hilman2009-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use clock framework instead of hard-coded CLOCK_TICK_RATE for determining timer tick frequencies. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: add arch_ioremap() which uses existing static mappingsKevin Hilman2009-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add arch-specific ioremap() which uses any existing static mappings in place of doing a new mapping. From now on, drivers should always use ioremap() instead of IO_ADDRESS(). In addition, remove the davinci_[read|write]* macros in favor of using ioremap. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: major rework of clock, PLL, PSC infrastructureKevin Hilman2009-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a significant rework of the low-level clock, PLL and Power Sleep Controller (PSC) implementation for the DaVinci family. The primary goal is to have better modeling if the hardware clocks and features with the aim of DVFS functionality. Highlights: - model PLLs and all PLL-derived clocks - model parent/child relationships of PLLs and clocks - convert to new clkdev layer - view clock frequency and refcount via /proc/davinci_clocks Special thanks to significant contributions and testing by David Brownell. Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: add runtime CPU detection supportKevin Hilman2009-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| | * | | | | davinci: add default Kconfig, add HAVE_IDEKevin Hilman2009-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * | | | | | [ARM] lart: fix build errorRussell King2009-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/arm/mach-sa1100/lart.c:36: error: 'PAGE_SHIFT' undeclared here (not in a function) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | Merge branch 'omap-fixes' of ↵Russell King2009-04-24
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
| | * \ \ \ \ \ Merge branch 'omap-clock-fixes' into omap-fixesTony Lindgren2009-04-24
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