6 files changed, 108 insertions, 91 deletions

diff --git a/include/asm-arm/arch-pxa/ssp.h b/include/asm-arm/arch-pxa/ssp.h
index 949878c0d908..ea200551a75f 100644
--- a/include/asm-arm/arch-pxa/ssp.h
+++ b/include/asm-arm/arch-pxa/ssp.h
@@ -40,8 +40,8 @@ struct ssp_dev {
 };
 
 int ssp_write_word(struct ssp_dev *dev, u32 data);
-int ssp_read_word(struct ssp_dev *dev);
-void ssp_flush(struct ssp_dev *dev);
+int ssp_read_word(struct ssp_dev *dev, u32 *data);
+int ssp_flush(struct ssp_dev *dev);
 void ssp_enable(struct ssp_dev *dev);
 void ssp_disable(struct ssp_dev *dev);
 void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp);
diff --git a/include/asm-arm/arch-s3c2410/dma.h b/include/asm-arm/arch-s3c2410/dma.h
index 7463fd5252ce..3661e465b0a5 100644
--- a/include/asm-arm/arch-s3c2410/dma.h
+++ b/include/asm-arm/arch-s3c2410/dma.h
@@ -1,18 +1,13 @@
-/* linux/include/asm-arm/arch-bast/dma.h
+/* linux/include/asm-arm/arch-s3c2410/dma.h
  *
- * Copyright (C) 2003,2004 Simtec Electronics
+ * Copyright (C) 2003,2004,2006 Simtec Electronics
  *      Ben Dooks <ben@simtec.co.uk>
  *
- * Samsung S3C2410X DMA support
+ * Samsung S3C241XX DMA support
  *
  * 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.
- *
- * Changelog:
- *  ??-May-2003 BJD   Created file
- *  ??-Jun-2003 BJD   Added more dma functionality to go with arch
- *  10-Nov-2004 BJD   Added sys_device support
 */
 
 #ifndef __ASM_ARCH_DMA_H
@@ -21,28 +16,26 @@
 #include <linux/sysdev.h>
 #include "hardware.h"
 
-
 /*
  * This is the maximum DMA address(physical address) that can be DMAd to.
  *
  */
-#define MAX_DMA_ADDRESS         0x20000000
+#define MAX_DMA_ADDRESS         0x40000000
 #define MAX_DMA_TRANSFER_SIZE   0x100000 /* Data Unit is half word  */
 
-
 /* we have 4 dma channels */
 #define S3C2410_DMA_CHANNELS        (4)
 
 /* types */
 
-typedef enum {
+enum s3c2410_dma_state {
         S3C2410_DMA_IDLE,
         S3C2410_DMA_RUNNING,
         S3C2410_DMA_PAUSED
-} s3c2410_dma_state_t;
+};
 
 
-/* s3c2410_dma_loadst_t
+/* enum s3c2410_dma_loadst
  *
  * This represents the state of the DMA engine, wrt to the loaded / running
  * transfers. Since we don't have any way of knowing exactly the state of
@@ -70,45 +63,40 @@ typedef enum {
  * currently running.
 */
 
-typedef enum {
+enum s3c2410_dma_loadst {
         S3C2410_DMALOAD_NONE,
         S3C2410_DMALOAD_1LOADED,
         S3C2410_DMALOAD_1RUNNING,
         S3C2410_DMALOAD_1LOADED_1RUNNING,
-} s3c2410_dma_loadst_t;
+};
 
-typedef enum {
+enum s3c2410_dma_buffresult {
         S3C2410_RES_OK,
         S3C2410_RES_ERR,
         S3C2410_RES_ABORT
-} s3c2410_dma_buffresult_t;
-
-
-typedef enum s3c2410_dmasrc_e s3c2410_dmasrc_t;
+};
 
-enum s3c2410_dmasrc_e {
-        S3C2410_DMASRC_HW,      /* source is memory */
-        S3C2410_DMASRC_MEM      /* source is hardware */
+enum s3c2410_dmasrc {
+        S3C2410_DMASRC_HW,              /* source is memory */
+        S3C2410_DMASRC_MEM              /* source is hardware */
 };
 
-/* enum s3c2410_chan_op_e
+/* enum s3c2410_chan_op
  *
  * operation codes passed to the DMA code by the user, and also used
  * to inform the current channel owner of any changes to the system state
 */
 
-enum s3c2410_chan_op_e {
+enum s3c2410_chan_op {
         S3C2410_DMAOP_START,
         S3C2410_DMAOP_STOP,
         S3C2410_DMAOP_PAUSE,
         S3C2410_DMAOP_RESUME,
         S3C2410_DMAOP_FLUSH,
-        S3C2410_DMAOP_TIMEOUT,           /* internal signal to handler */
+        S3C2410_DMAOP_TIMEOUT,          /* internal signal to handler */
         S3C2410_DMAOP_STARTED,          /* indicate channel started */
 };
 
-typedef enum s3c2410_chan_op_e s3c2410_chan_op_t;
-
 /* flags */
 
 #define S3C2410_DMAF_SLOW         (1<<0)   /* slow, so don't worry about
@@ -117,104 +105,100 @@ typedef enum s3c2410_chan_op_e s3c2410_chan_op_t;
 
 /* dma buffer */
 
-typedef struct s3c2410_dma_buf_s s3c2410_dma_buf_t;
-
 struct s3c2410_dma_client {
         char                *name;
 };
 
-typedef struct s3c2410_dma_client s3c2410_dma_client_t;
-
 /* s3c2410_dma_buf_s
  *
  * internally used buffer structure to describe a queued or running
  * buffer.
 */
 
-struct s3c2410_dma_buf_s {
-        s3c2410_dma_buf_t   *next;
-        int                  magic;        /* magic */
-        int                  size;         /* buffer size in bytes */
-        dma_addr_t           data;         /* start of DMA data */
-        dma_addr_t           ptr;          /* where the DMA got to [1] */
-        void                *id;           /* client's id */
+struct s3c2410_dma_buf;
+struct s3c2410_dma_buf {
+        struct s3c2410_dma_buf  *next;
+        int                      magic;         /* magic */
+        int                      size;          /* buffer size in bytes */
+        dma_addr_t               data;          /* start of DMA data */
+        dma_addr_t               ptr;           /* where the DMA got to [1] */
+        void                    *id;            /* client's id */
 };
 
 /* [1] is this updated for both recv/send modes? */
 
-typedef struct s3c2410_dma_chan_s s3c2410_dma_chan_t;
+struct s3c2410_dma_chan;
 
 /* s3c2410_dma_cbfn_t
  *
  * buffer callback routine type
 */
 
-typedef void (*s3c2410_dma_cbfn_t)(s3c2410_dma_chan_t *, void *buf, int size,
-                                   s3c2410_dma_buffresult_t result);
+typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
+                                   void *buf, int size,
+                                   enum s3c2410_dma_buffresult result);
 
-typedef int  (*s3c2410_dma_opfn_t)(s3c2410_dma_chan_t *,
-                                   s3c2410_chan_op_t );
+typedef int  (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
+                                   enum s3c2410_chan_op );
 
-struct s3c2410_dma_stats_s {
-        unsigned long          loads;
-        unsigned long          timeout_longest;
-        unsigned long          timeout_shortest;
-        unsigned long          timeout_avg;
-        unsigned long          timeout_failed;
+struct s3c2410_dma_stats {
+        unsigned long           loads;
+        unsigned long           timeout_longest;
+        unsigned long           timeout_shortest;
+        unsigned long           timeout_avg;
+        unsigned long           timeout_failed;
 };
 
-typedef struct s3c2410_dma_stats_s s3c2410_dma_stats_t;
-
-/* struct s3c2410_dma_chan_s
+/* struct s3c2410_dma_chan
  *
  * full state information for each DMA channel
 */
 
-struct s3c2410_dma_chan_s {
+struct s3c2410_dma_chan {
         /* channel state flags and information */
-        unsigned char          number;      /* number of this dma channel */
-        unsigned char          in_use;      /* channel allocated */
-        unsigned char          irq_claimed; /* irq claimed for channel */
-        unsigned char          irq_enabled; /* irq enabled for channel */
-        unsigned char          xfer_unit;   /* size of an transfer */
+        unsigned char            number;      /* number of this dma channel */
+        unsigned char            in_use;      /* channel allocated */
+        unsigned char            irq_claimed; /* irq claimed for channel */
+        unsigned char            irq_enabled; /* irq enabled for channel */
+        unsigned char            xfer_unit;   /* size of an transfer */
 
         /* channel state */
 
-        s3c2410_dma_state_t    state;
-        s3c2410_dma_loadst_t   load_state;
-        s3c2410_dma_client_t  *client;
+        enum s3c2410_dma_state   state;
+        enum s3c2410_dma_loadst  load_state;
+        struct s3c2410_dma_client *client;
 
         /* channel configuration */
-        s3c2410_dmasrc_t       source;
-        unsigned long          dev_addr;
-        unsigned long          load_timeout;
-        unsigned int           flags;        /* channel flags */
+        enum s3c2410_dmasrc      source;
+        unsigned long            dev_addr;
+        unsigned long            load_timeout;
+        unsigned int             flags;         /* channel flags */
 
         /* channel's hardware position and configuration */
-        void __iomem           *regs;        /* channels registers */
-        void __iomem           *addr_reg;    /* data address register */
-        unsigned int           irq;          /* channel irq */
-        unsigned long          dcon;         /* default value of DCON */
+        void __iomem            *regs;          /* channels registers */
+        void __iomem            *addr_reg;      /* data address register */
+        unsigned int             irq;           /* channel irq */
+        unsigned long            dcon;          /* default value of DCON */
 
         /* driver handles */
-        s3c2410_dma_cbfn_t     callback_fn;  /* buffer done callback */
-        s3c2410_dma_opfn_t     op_fn;        /* channel operation callback */
+        s3c2410_dma_cbfn_t       callback_fn;   /* buffer done callback */
+        s3c2410_dma_opfn_t       op_fn;         /* channel op callback */
 
         /* stats gathering */
-        s3c2410_dma_stats_t   *stats;
-        s3c2410_dma_stats_t    stats_store;
+        struct s3c2410_dma_stats *stats;
+        struct s3c2410_dma_stats  stats_store;
 
         /* buffer list and information */
-        s3c2410_dma_buf_t      *curr;        /* current dma buffer */
-        s3c2410_dma_buf_t      *next;        /* next buffer to load */
-        s3c2410_dma_buf_t      *end;         /* end of queue */
+        struct s3c2410_dma_buf  *curr;          /* current dma buffer */
+        struct s3c2410_dma_buf  *next;          /* next buffer to load */
+        struct s3c2410_dma_buf  *end;           /* end of queue */
 
         /* system device */
         struct sys_device       dev;
 };
 
 /* the currently allocated channel information */
-extern s3c2410_dma_chan_t s3c2410_chans[];
+extern struct s3c2410_dma_chan s3c2410_chans[];
 
 /* note, we don't really use dma_device_t at the moment */
 typedef unsigned long dma_device_t;
@@ -227,7 +211,7 @@ typedef unsigned long dma_device_t;
 */
 
 extern int s3c2410_dma_request(dmach_t channel,
-                               s3c2410_dma_client_t *, void *dev);
+                               struct s3c2410_dma_client *, void *dev);
 
 
 /* s3c2410_dma_ctrl
@@ -235,7 +219,7 @@ extern int s3c2410_dma_request(dmach_t channel,
  * change the state of the dma channel
 */
 
-extern int s3c2410_dma_ctrl(dmach_t channel, s3c2410_chan_op_t op);
+extern int s3c2410_dma_ctrl(dmach_t channel, enum s3c2410_chan_op op);
 
 /* s3c2410_dma_setflags
  *
@@ -250,7 +234,7 @@ extern int s3c2410_dma_setflags(dmach_t channel,
  * free the dma channel (will also abort any outstanding operations)
 */
 
-extern int s3c2410_dma_free(dmach_t channel, s3c2410_dma_client_t *);
+extern int s3c2410_dma_free(dmach_t channel, struct s3c2410_dma_client *);
 
 /* s3c2410_dma_enqueue
  *
@@ -274,7 +258,7 @@ extern int s3c2410_dma_config(dmach_t channel, int xferunit, int dcon);
  * configure the device we're talking to
 */
 
-extern int s3c2410_dma_devconfig(int channel, s3c2410_dmasrc_t source,
+extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
                                  int hwcfg, unsigned long devaddr);
 
 /* s3c2410_dma_getposition
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index fe0c744e0266..e4a2569c636c 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -247,14 +247,12 @@ extern void dmac_flush_range(unsigned long, unsigned long);
  */
 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
         do {                                                    \
-                flush_cache_page(vma, vaddr, page_to_pfn(page));\
                 memcpy(dst, src, len);                          \
-                flush_dcache_page(page);                        \
+                flush_ptrace_access(vma, page, vaddr, dst, len, 1);\
         } while (0)
 
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
         do {                                                    \
-                flush_cache_page(vma, vaddr, page_to_pfn(page));\
                 memcpy(dst, src, len);                          \
         } while (0)
 
@@ -285,10 +283,24 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned l
                 __cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
         }
 }
+
+static inline void
+flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
+                         unsigned long uaddr, void *kaddr,
+                         unsigned long len, int write)
+{
+        if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
+                unsigned long addr = (unsigned long)kaddr;
+                __cpuc_coherent_kern_range(addr, addr + len);
+        }
+}
 #else
 extern void flush_cache_mm(struct mm_struct *mm);
 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
 extern void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn);
+extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
+                                unsigned long uaddr, void *kaddr,
+                                unsigned long len, int write);
 #endif
 
 /*
diff --git a/include/asm-arm/hardware/ssp.h b/include/asm-arm/hardware/ssp.h
index 28aa11b769cd..3b42e181997c 100644
--- a/include/asm-arm/hardware/ssp.h
+++ b/include/asm-arm/hardware/ssp.h
@@ -16,8 +16,8 @@ struct ssp_state {
 };
 
 int ssp_write_word(u16 data);
-int ssp_read_word(void);
-void ssp_flush(void);
+int ssp_read_word(u16 *data);
+int ssp_flush(void);
 void ssp_enable(void);
 void ssp_disable(void);
 void ssp_save_state(struct ssp_state *ssp);
diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index b3479fc1cc8f..bf7b9dea30f1 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -291,5 +291,12 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
  */
 #define xlate_dev_kmem_ptr(p)   p
 
+/*
+ * Register ISA memory and port locations for glibc iopl/inb/outb
+ * emulation.
+ */
+extern void register_isa_ports(unsigned int mmio, unsigned int io,
+                               unsigned int io_shift);
+
 #endif  /* __KERNEL__ */
 #endif  /* __ASM_ARM_IO_H */
diff --git a/include/asm-arm/spinlock.h b/include/asm-arm/spinlock.h
index 406ca97a8ab2..e2f1d75171df 100644
--- a/include/asm-arm/spinlock.h
+++ b/include/asm-arm/spinlock.h
@@ -199,7 +199,21 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw)
         : "cc");
 }
 
-#define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
+static inline int __raw_read_trylock(raw_rwlock_t *rw)
+{
+        unsigned long tmp tmp2 = 1;
+
+        __asm__ __volatile__(
+"1:     ldrex   %0, [%2]\n"
+"       adds    %0, %0, #1\n"
+"       strexpl %1, %0, [%2]\n"
+        : "=&r" (tmp), "+r" (tmp2)
+        : "r" (&rw->lock)
+        : "cc");
+
+        smp_mb();
+        return tmp2 == 0;
+}
 
 /* read_can_lock - would read_trylock() succeed? */
 #define __raw_read_can_lock(x)          ((x)->lock < 0x80000000)