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

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 3541/2: workaround for PXA27x erratum E7
  [ARM] nommu: provide a way for correct control register value selection
  [ARM] 3705/1: add supersection support to ioremap()
  [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure
  [ARM] 3706/2: ep93xx: add cirrus logic edb9315a support
  [ARM] 3704/1: format IOP Kconfig with tabs, create more consistency
  [ARM] 3703/1: Add help description for ARCH_EP80219
  [ARM] 3678/1: MMC: Make OMAP MMC work
  [ARM] 3677/1: OMAP: Update H2 defconfig
  [ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1
  [ARM] Add section support to ioremap
  [ARM] Fix sa11x0 SDRAM selection
  [ARM] Set bit 4 on section mappings correctly depending on CPU
  [ARM] 3666/1: TRIZEPS4 [1/5] core
  ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring
  ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE
  ARM: OMAP: Update dmtimers
  ARM: OMAP: Make clock variables static
  ARM: OMAP: Fix GPMC compilation when DEBUG is defined
  ARM: OMAP: Mux updates for external DMA and GPIO
  ...

8 files changed, 84 insertions, 31 deletions

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 7cffbaef064b..f0c0cdb1c183 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -25,7 +25,7 @@ obj-$(CONFIG_OABI_COMPAT)	+= sys_oabi-compat.o
 obj-$(CONFIG_CRUNCH)            += crunch.o crunch-bits.o
 AFLAGS_crunch-bits.o            := -Wa,-mcpu=ep9312
 
-obj-$(CONFIG_IWMMXT)            += iwmmxt.o
+obj-$(CONFIG_IWMMXT)            += iwmmxt.o iwmmxt-notifier.o
 AFLAGS_iwmmxt.o                 := -Wa,-mcpu=iwmmxt
 
 ifneq ($(CONFIG_ARCH_EBSA110),y)
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index 447ede5143a8..cc2d58d028e1 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -105,6 +105,7 @@ int main(void)
   BLANK();
   DEFINE(PROC_INFO_SZ,          sizeof(struct proc_info_list));
   DEFINE(PROCINFO_INITFUNC,     offsetof(struct proc_info_list, __cpu_flush));
-  DEFINE(PROCINFO_MMUFLAGS,     offsetof(struct proc_info_list, __cpu_mmu_flags));
+  DEFINE(PROCINFO_MM_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
+  DEFINE(PROCINFO_IO_MMUFLAGS,  offsetof(struct proc_info_list, __cpu_io_mmu_flags));
   return 0; 
 }
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 26f197afd204..7ea5f01dfc7b 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -589,9 +589,7 @@ ENTRY(__switch_to)
 #ifdef CONFIG_MMU
         mcr     p15, 0, r6, c3, c0, 0           @ Set domain register
 #endif
-#if defined(CONFIG_IWMMXT)
-        bl      iwmmxt_task_switch
-#elif defined(CONFIG_CPU_XSCALE)
+#if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
         add     r4, r2, #TI_CPU_DOMAIN + 40     @ cpu_context_save->extra
         ldmib   r4, {r4, r5}
         mar     acc0, r4, r5
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 518b80cd87de..2242f5f7cb7d 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -220,7 +220,7 @@ __create_page_tables:
         teq     r0, r6
         bne     1b
 
-        ldr     r7, [r10, #PROCINFO_MMUFLAGS]   @ mmuflags
+        ldr     r7, [r10, #PROCINFO_MM_MMUFLAGS] @ mm_mmuflags
 
         /*
          * Create identity mapping for first MB of kernel to
@@ -271,8 +271,7 @@ __create_page_tables:
 #endif
 
 #ifdef CONFIG_DEBUG_LL
-        bic     r7, r7, #0x0c                   @ turn off cacheable
-                                                @ and bufferable bits
+        ldr     r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
         /*
          * Map in IO space for serial debugging.
          * This allows debug messages to be output
diff --git a/arch/arm/kernel/iwmmxt-notifier.c b/arch/arm/kernel/iwmmxt-notifier.c
new file mode 100644
index 000000000000..44a86c33796e
--- /dev/null
+++ b/arch/arm/kernel/iwmmxt-notifier.c
@@ -0,0 +1,64 @@
+/*
+ *  linux/arch/arm/kernel/iwmmxt-notifier.c
+ *
+ *  XScale iWMMXt (Concan) context switching and handling
+ *
+ *  Initial code:
+ *  Copyright (c) 2003, Intel Corporation
+ *
+ *  Full lazy switching support, optimizations and more, by Nicolas Pitre
+ *  Copyright (c) 2003-2004, MontaVista Software, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <asm/thread_notify.h>
+#include <asm/io.h>
+
+static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t)
+{
+        struct thread_info *thread = t;
+
+        switch (cmd) {
+        case THREAD_NOTIFY_FLUSH:
+                /*
+                 * flush_thread() zeroes thread->fpstate, so no need
+                 * to do anything here.
+                 *
+                 * FALLTHROUGH: Ensure we don't try to overwrite our newly
+                 * initialised state information on the first fault.
+                 */
+
+        case THREAD_NOTIFY_RELEASE:
+                iwmmxt_task_release(thread);
+                break;
+
+        case THREAD_NOTIFY_SWITCH:
+                iwmmxt_task_switch(thread);
+                break;
+        }
+
+        return NOTIFY_DONE;
+}
+
+static struct notifier_block iwmmxt_notifier_block = {
+        .notifier_call  = iwmmxt_do,
+};
+
+static int __init iwmmxt_init(void)
+{
+        thread_register_notifier(&iwmmxt_notifier_block);
+
+        return 0;
+}
+
+late_initcall(iwmmxt_init);
diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S
index a3bae95e536c..b63b528f22a6 100644
--- a/arch/arm/kernel/iwmmxt.S
+++ b/arch/arm/kernel/iwmmxt.S
@@ -271,30 +271,27 @@ ENTRY(iwmmxt_task_restore)
 /*
  * Concan handling on task switch
  *
- * r0 = previous task_struct pointer (must be preserved)
- * r1 = previous thread_info pointer
- * r2 = next thread_info pointer (must be preserved)
+ * r0 = next thread_info pointer
  *
- * Called only from __switch_to with task preemption disabled.
- * No need to care about preserving r4 and above.
+ * Called only from the iwmmxt notifier with task preemption disabled.
  */
 ENTRY(iwmmxt_task_switch)
 
-        mrc     p15, 0, r4, c15, c1, 0
-        tst     r4, #0x3                        @ CP0 and CP1 accessible?
+        mrc     p15, 0, r1, c15, c1, 0
+        tst     r1, #0x3                        @ CP0 and CP1 accessible?
         bne     1f                              @ yes: block them for next task
 
-        ldr     r5, =concan_owner
-        add     r6, r2, #TI_IWMMXT_STATE        @ get next task Concan save area
-        ldr     r5, [r5]                        @ get current Concan owner
-        teq     r5, r6                          @ next task owns it?
+        ldr     r2, =concan_owner
+        add     r3, r0, #TI_IWMMXT_STATE        @ get next task Concan save area
+        ldr     r2, [r2]                        @ get current Concan owner
+        teq     r2, r3                          @ next task owns it?
         movne   pc, lr                          @ no: leave Concan disabled
 
-1:      eor     r4, r4, #3                      @ flip Concan access
-        mcr     p15, 0, r4, c15, c1, 0
+1:      eor     r1, r1, #3                      @ flip Concan access
+        mcr     p15, 0, r1, c15, c1, 0
 
-        mrc     p15, 0, r4, c2, c0, 0
-        sub     pc, lr, r4, lsr #32             @ cpwait and return
+        mrc     p15, 0, r1, c2, c0, 0
+        sub     pc, lr, r1, lsr #32             @ cpwait and return
 
 /*
  * Remove Concan ownership of given task
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index c3258b763c5d..3079535afccd 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -352,9 +352,6 @@ void flush_thread(void)
         memset(&thread->fpstate, 0, sizeof(union fp_state));
 
         thread_notify(THREAD_NOTIFY_FLUSH, thread);
-#if defined(CONFIG_IWMMXT)
-        iwmmxt_task_release(thread);
-#endif
 }
 
 void release_thread(struct task_struct *dead_task)
@@ -362,9 +359,6 @@ void release_thread(struct task_struct *dead_task)
         struct thread_info *thread = task_thread_info(dead_task);
 
         thread_notify(THREAD_NOTIFY_RELEASE, thread);
-#if defined(CONFIG_IWMMXT)
-        iwmmxt_task_release(thread);
-#endif
 }
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 7447a1987322..7d6a516c0b9f 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -344,9 +344,9 @@ static void __init setup_processor(void)
         cpu_cache = *list->cache;
 #endif
 
-        printk("CPU: %s [%08x] revision %d (ARMv%s)\n",
+        printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08x\n",
                cpu_name, processor_id, (int)processor_id & 15,
-               proc_arch[cpu_architecture()]);
+               proc_arch[cpu_architecture()], cr_alignment);
 
         sprintf(system_utsname.machine, "%s%c", list->arch_name, ENDIANNESS);
         sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);