Merge branch 'devel' of ssh://master.kernel.org/home/rmk/linux-2.6-arm into devel

11 files changed, 157 insertions, 49 deletions

diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index df5638f3643a..7edf3536df24 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -19,21 +19,17 @@
 #include <asm/system.h>
 #include <asm/scatterlist.h>
 
-typedef unsigned int dmach_t;
-
 #include <mach/isa-dma.h>
 
 /*
- * DMA modes
+ * The DMA modes reflect the settings for the ISA DMA controller
  */
-typedef unsigned int dmamode_t;
-
-#define DMA_MODE_MASK   3
+#define DMA_MODE_MASK    0xcc
 
-#define DMA_MODE_READ    0
-#define DMA_MODE_WRITE   1
-#define DMA_MODE_CASCADE 2
-#define DMA_AUTOINIT     4
+#define DMA_MODE_READ    0x44
+#define DMA_MODE_WRITE   0x48
+#define DMA_MODE_CASCADE 0xc0
+#define DMA_AUTOINIT     0x10
 
 extern spinlock_t  dma_spin_lock;
 
@@ -52,44 +48,44 @@ static inline void release_dma_lock(unsigned long flags)
 /* Clear the 'DMA Pointer Flip Flop'.
  * Write 0 for LSB/MSB, 1 for MSB/LSB access.
  */
-#define clear_dma_ff(channel)
+#define clear_dma_ff(chan)
 
 /* Set only the page register bits of the transfer address.
  *
  * NOTE: This is an architecture specific function, and should
  *       be hidden from the drivers
  */
-extern void set_dma_page(dmach_t channel, char pagenr);
+extern void set_dma_page(unsigned int chan, char pagenr);
 
 /* Request a DMA channel
  *
  * Some architectures may need to do allocate an interrupt
  */
-extern int  request_dma(dmach_t channel, const char * device_id);
+extern int  request_dma(unsigned int chan, const char * device_id);
 
 /* Free a DMA channel
  *
  * Some architectures may need to do free an interrupt
  */
-extern void free_dma(dmach_t channel);
+extern void free_dma(unsigned int chan);
 
 /* Enable DMA for this channel
  *
  * On some architectures, this may have other side effects like
  * enabling an interrupt and setting the DMA registers.
  */
-extern void enable_dma(dmach_t channel);
+extern void enable_dma(unsigned int chan);
 
 /* Disable DMA for this channel
  *
  * On some architectures, this may have other side effects like
  * disabling an interrupt or whatever.
  */
-extern void disable_dma(dmach_t channel);
+extern void disable_dma(unsigned int chan);
 
 /* Test whether the specified channel has an active DMA transfer
  */
-extern int dma_channel_active(dmach_t channel);
+extern int dma_channel_active(unsigned int chan);
 
 /* Set the DMA scatter gather list for this channel
  *
@@ -97,7 +93,7 @@ extern int dma_channel_active(dmach_t channel);
  * especially since some DMA architectures don't update the
  * DMA address immediately, but defer it to the enable_dma().
  */
-extern void set_dma_sg(dmach_t channel, struct scatterlist *sg, int nr_sg);
+extern void set_dma_sg(unsigned int chan, struct scatterlist *sg, int nr_sg);
 
 /* Set the DMA address for this channel
  *
@@ -105,9 +101,9 @@ extern void set_dma_sg(dmach_t channel, struct scatterlist *sg, int nr_sg);
  * especially since some DMA architectures don't update the
  * DMA address immediately, but defer it to the enable_dma().
  */
-extern void __set_dma_addr(dmach_t channel, void *addr);
-#define set_dma_addr(channel, addr)                             \
-        __set_dma_addr(channel, bus_to_virt(addr))
+extern void __set_dma_addr(unsigned int chan, void *addr);
+#define set_dma_addr(chan, addr)                                \
+        __set_dma_addr(chan, bus_to_virt(addr))
 
 /* Set the DMA byte count for this channel
  *
@@ -115,7 +111,7 @@ extern void __set_dma_addr(dmach_t channel, void *addr);
  * especially since some DMA architectures don't update the
  * DMA count immediately, but defer it to the enable_dma().
  */
-extern void set_dma_count(dmach_t channel, unsigned long count);
+extern void set_dma_count(unsigned int chan, unsigned long count);
 
 /* Set the transfer direction for this channel
  *
@@ -124,11 +120,11 @@ extern void set_dma_count(dmach_t channel, unsigned long count);
  * DMA transfer direction immediately, but defer it to the
  * enable_dma().
  */
-extern void set_dma_mode(dmach_t channel, dmamode_t mode);
+extern void set_dma_mode(unsigned int chan, unsigned int mode);
 
 /* Set the transfer speed for this channel
  */
-extern void set_dma_speed(dmach_t channel, int cycle_ns);
+extern void set_dma_speed(unsigned int chan, int cycle_ns);
 
 /* Get DMA residue count. After a DMA transfer, this
  * should return zero. Reading this while a DMA transfer is
@@ -136,7 +132,7 @@ extern void set_dma_speed(dmach_t channel, int cycle_ns);
  * If called before the channel has been used, it may return 1.
  * Otherwise, it returns the number of _bytes_ left to transfer.
  */
-extern int  get_dma_residue(dmach_t channel);
+extern int  get_dma_residue(unsigned int chan);
 
 #ifndef NO_DMA
 #define NO_DMA  255
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index a58378c343b9..def8eac6e89d 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -50,6 +50,7 @@ typedef struct user_fp elf_fpregset_t;
 #define R_ARM_ABS32     2
 #define R_ARM_CALL      28
 #define R_ARM_JUMP24    29
+#define R_ARM_PREL31    42
 
 /*
  * These are used to set parameters in the core dumps.
diff --git a/arch/arm/include/asm/hwcap.h b/arch/arm/include/asm/hwcap.h
index bda489f9f017..f7bd52b1c365 100644
--- a/arch/arm/include/asm/hwcap.h
+++ b/arch/arm/include/asm/hwcap.h
@@ -17,6 +17,8 @@
 #define HWCAP_CRUNCH    1024
 #define HWCAP_THUMBEE   2048
 #define HWCAP_NEON      4096
+#define HWCAP_VFPv3     8192
+#define HWCAP_VFPv3D16  16384
 
 #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
 /*
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
index fc7278ea7146..9e614a18e680 100644
--- a/arch/arm/include/asm/mach/dma.h
+++ b/arch/arm/include/asm/mach/dma.h
@@ -15,13 +15,13 @@ struct dma_struct;
 typedef struct dma_struct dma_t;
 
 struct dma_ops {
-        int     (*request)(dmach_t, dma_t *);           /* optional */
-        void    (*free)(dmach_t, dma_t *);              /* optional */
-        void    (*enable)(dmach_t, dma_t *);            /* mandatory */
-        void    (*disable)(dmach_t, dma_t *);           /* mandatory */
-        int     (*residue)(dmach_t, dma_t *);           /* optional */
-        int     (*setspeed)(dmach_t, dma_t *, int);     /* optional */
-        char    *type;
+        int     (*request)(unsigned int, dma_t *);              /* optional */
+        void    (*free)(unsigned int, dma_t *);                 /* optional */
+        void    (*enable)(unsigned int, dma_t *);               /* mandatory */
+        void    (*disable)(unsigned int, dma_t *);              /* mandatory */
+        int     (*residue)(unsigned int, dma_t *);              /* optional */
+        int     (*setspeed)(unsigned int, dma_t *, int);        /* optional */
+        const char *type;
 };
 
 struct dma_struct {
@@ -34,24 +34,21 @@ struct dma_struct {
         unsigned int    active:1;       /* Transfer active              */
         unsigned int    invalid:1;      /* Address/Count changed        */
 
-        dmamode_t       dma_mode;       /* DMA mode                     */
+        unsigned int    dma_mode;       /* DMA mode                     */
         int             speed;          /* DMA speed                    */
 
         unsigned int    lock;           /* Device is allocated          */
         const char      *device_id;     /* Device name                  */
 
-        unsigned int    dma_base;       /* Controller base address      */
-        int             dma_irq;        /* Controller IRQ               */
-        struct scatterlist cur_sg;      /* Current controller buffer    */
-        unsigned int    state;
-
-        struct dma_ops  *d_ops;
+        const struct dma_ops *d_ops;
 };
 
-/* Prototype: void arch_dma_init(dma)
- * Purpose  : Initialise architecture specific DMA
- * Params   : dma - pointer to array of DMA structures
+/*
+ * isa_dma_add - add an ISA-style DMA channel
  */
-extern void arch_dma_init(dma_t *dma);
+extern int isa_dma_add(unsigned int, dma_t *dma);
 
-extern void isa_init_dma(dma_t *dma);
+/*
+ * Add the ISA DMA controller.  Always takes channels 0-7.
+ */
+extern void isa_init_dma(void);
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h
index 24b168dc31a3..e4dfa69abb68 100644
--- a/arch/arm/include/asm/module.h
+++ b/arch/arm/include/asm/module.h
@@ -1,15 +1,27 @@
 #ifndef _ASM_ARM_MODULE_H
 #define _ASM_ARM_MODULE_H
 
-struct mod_arch_specific
-{
-        int foo;
-};
-
 #define Elf_Shdr        Elf32_Shdr
 #define Elf_Sym         Elf32_Sym
 #define Elf_Ehdr        Elf32_Ehdr
 
+struct unwind_table;
+
+struct mod_arch_specific
+{
+#ifdef CONFIG_ARM_UNWIND
+        Elf_Shdr *unw_sec_init;
+        Elf_Shdr *unw_sec_devinit;
+        Elf_Shdr *unw_sec_core;
+        Elf_Shdr *sec_init_text;
+        Elf_Shdr *sec_devinit_text;
+        Elf_Shdr *sec_core_text;
+        struct unwind_table *unwind_init;
+        struct unwind_table *unwind_devinit;
+        struct unwind_table *unwind_core;
+#endif
+};
+
 /*
  * Include the ARM architecture version.
  */
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 73192618f1c2..236a06b9b7ce 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -27,6 +27,8 @@
 /* PTRACE_SYSCALL is 24 */
 #define PTRACE_GETCRUNCHREGS    25
 #define PTRACE_SETCRUNCHREGS    26
+#define PTRACE_GETVFPREGS       27
+#define PTRACE_SETVFPREGS       28
 
 /*
  * PSR bits
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h
new file mode 100644
index 000000000000..4d0a16441b29
--- /dev/null
+++ b/arch/arm/include/asm/stacktrace.h
@@ -0,0 +1,15 @@
+#ifndef __ASM_STACKTRACE_H
+#define __ASM_STACKTRACE_H
+
+struct stackframe {
+        unsigned long fp;
+        unsigned long sp;
+        unsigned long lr;
+        unsigned long pc;
+};
+
+extern int unwind_frame(struct stackframe *frame);
+extern void walk_stackframe(struct stackframe *frame,
+                            int (*fn)(struct stackframe *, void *), void *data);
+
+#endif  /* __ASM_STACKTRACE_H */
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 68b9ec82a37f..4f8848260ee2 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -99,6 +99,8 @@ static inline struct thread_info *current_thread_info(void)
 
 #define thread_saved_pc(tsk)    \
         ((unsigned long)(task_thread_info(tsk)->cpu_context.pc))
+#define thread_saved_sp(tsk)    \
+        ((unsigned long)(task_thread_info(tsk)->cpu_context.sp))
 #define thread_saved_fp(tsk)    \
         ((unsigned long)(task_thread_info(tsk)->cpu_context.fp))
 
@@ -113,6 +115,8 @@ extern void iwmmxt_task_restore(struct thread_info *, void *);
 extern void iwmmxt_task_release(struct thread_info *);
 extern void iwmmxt_task_switch(struct thread_info *);
 
+extern void vfp_sync_state(struct thread_info *thread);
+
 #endif
 
 /*
diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h
index aa399aec568e..491960bf4260 100644
--- a/arch/arm/include/asm/traps.h
+++ b/arch/arm/include/asm/traps.h
@@ -25,5 +25,6 @@ static inline int in_exception_text(unsigned long ptr)
 }
 
 extern void __init early_trap_init(void);
+extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
 
 #endif
diff --git a/arch/arm/include/asm/unwind.h b/arch/arm/include/asm/unwind.h
new file mode 100644
index 000000000000..a5edf421005c
--- /dev/null
+++ b/arch/arm/include/asm/unwind.h
@@ -0,0 +1,69 @@
+/*
+ * arch/arm/include/asm/unwind.h
+ *
+ * Copyright (C) 2008 ARM Limited
+ *
+ * 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
+ */
+
+#ifndef __ASM_UNWIND_H
+#define __ASM_UNWIND_H
+
+#ifndef __ASSEMBLY__
+
+/* Unwind reason code according the the ARM EABI documents */
+enum unwind_reason_code {
+        URC_OK = 0,                     /* operation completed successfully */
+        URC_CONTINUE_UNWIND = 8,
+        URC_FAILURE = 9                 /* unspecified failure of some kind */
+};
+
+struct unwind_idx {
+        unsigned long addr;
+        unsigned long insn;
+};
+
+struct unwind_table {
+        struct list_head list;
+        struct unwind_idx *start;
+        struct unwind_idx *stop;
+        unsigned long begin_addr;
+        unsigned long end_addr;
+};
+
+extern struct unwind_table *unwind_table_add(unsigned long start,
+                                             unsigned long size,
+                                             unsigned long text_addr,
+                                             unsigned long text_size);
+extern void unwind_table_del(struct unwind_table *tab);
+extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk);
+
+#ifdef CONFIG_ARM_UNWIND
+extern int __init unwind_init(void);
+#else
+static inline int __init unwind_init(void)
+{
+        return 0;
+}
+#endif
+
+#endif  /* !__ASSEMBLY__ */
+
+#ifdef CONFIG_ARM_UNWIND
+#define UNWIND(code...)         code
+#else
+#define UNWIND(code...)
+#endif
+
+#endif  /* __ASM_UNWIND_H */
diff --git a/arch/arm/include/asm/user.h b/arch/arm/include/asm/user.h
index 825c1e7c582d..df95e050f9dd 100644
--- a/arch/arm/include/asm/user.h
+++ b/arch/arm/include/asm/user.h
@@ -81,4 +81,13 @@ struct user{
 #define HOST_TEXT_START_ADDR (u.start_code)
 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
 
+/*
+ * User specific VFP registers. If only VFPv2 is present, registers 16 to 31
+ * are ignored by the ptrace system call.
+ */
+struct user_vfp {
+        unsigned long long fpregs[32];
+        unsigned long fpscr;
+};
+
 #endif /* _ARM_USER_H */