Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 5965/1: Fix soft lockup in at91 udc driver
ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds
ARM: 6005/1: arm: kprobes: fix register corruption with jprobes
ARM: 6003/1: removing compilation warning from pl061.h
ARM: 6001/1: removing compilation warning comming from clkdev.h
ARM: 6000/1: removing compilation warning comming from <asm/irq.h>
ARM: 5999/1: Including device.h and resource.h header files in linux/amba/bus.h
ARM: 5997/1: ARM: Correct the VFPv3 detection
ARM: 5996/1: ARM: Change the mandatory barriers implementation (4/4)
ARM: 5995/1: ARM: Add L2x0 outer_sync() support (3/4)
ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)
ARM: 5993/1: ARM: Move the outer_cache definitions into a separate file (1/4)
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 72da7e0..0d08d41 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -15,6 +15,7 @@
#include <asm/glue.h>
#include <asm/shmparam.h>
#include <asm/cachetype.h>
+#include <asm/outercache.h>
#define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
@@ -219,12 +220,6 @@
void (*dma_flush_range)(const void *, const void *);
};
-struct outer_cache_fns {
- void (*inv_range)(unsigned long, unsigned long);
- void (*clean_range)(unsigned long, unsigned long);
- void (*flush_range)(unsigned long, unsigned long);
-};
-
/*
* Select the calling method
*/
@@ -281,37 +276,6 @@
#endif
-#ifdef CONFIG_OUTER_CACHE
-
-extern struct outer_cache_fns outer_cache;
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.inv_range)
- outer_cache.inv_range(start, end);
-}
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.clean_range)
- outer_cache.clean_range(start, end);
-}
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.flush_range)
- outer_cache.flush_range(start, end);
-}
-
-#else
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{ }
-
-#endif
-
/*
* Copy user data from/to a page which is mapped into a different
* processes address space. Really, we want to allow our "user
diff --git a/arch/arm/include/asm/clkdev.h b/arch/arm/include/asm/clkdev.h
index 7a0690d..b56c138 100644
--- a/arch/arm/include/asm/clkdev.h
+++ b/arch/arm/include/asm/clkdev.h
@@ -13,6 +13,7 @@
#define __ASM_CLKDEV_H
struct clk;
+struct device;
struct clk_lookup {
struct list_head node;
diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h
index 328f14a..237282f 100644
--- a/arch/arm/include/asm/irq.h
+++ b/arch/arm/include/asm/irq.h
@@ -17,6 +17,7 @@
#ifndef __ASSEMBLY__
struct irqaction;
+struct pt_regs;
extern void migrate_irqs(void);
extern void asm_do_IRQ(unsigned int, struct pt_regs *);
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
new file mode 100644
index 0000000..25f76ba
--- /dev/null
+++ b/arch/arm/include/asm/outercache.h
@@ -0,0 +1,75 @@
+/*
+ * arch/arm/include/asm/outercache.h
+ *
+ * Copyright (C) 2010 ARM Ltd.
+ * Written by Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * 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_OUTERCACHE_H
+#define __ASM_OUTERCACHE_H
+
+struct outer_cache_fns {
+ void (*inv_range)(unsigned long, unsigned long);
+ void (*clean_range)(unsigned long, unsigned long);
+ void (*flush_range)(unsigned long, unsigned long);
+#ifdef CONFIG_OUTER_CACHE_SYNC
+ void (*sync)(void);
+#endif
+};
+
+#ifdef CONFIG_OUTER_CACHE
+
+extern struct outer_cache_fns outer_cache;
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.inv_range)
+ outer_cache.inv_range(start, end);
+}
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.clean_range)
+ outer_cache.clean_range(start, end);
+}
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{
+ if (outer_cache.flush_range)
+ outer_cache.flush_range(start, end);
+}
+
+#else
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{ }
+
+#endif
+
+#ifdef CONFIG_OUTER_CACHE_SYNC
+static inline void outer_sync(void)
+{
+ if (outer_cache.sync)
+ outer_cache.sync();
+}
+#else
+static inline void outer_sync(void)
+{ }
+#endif
+
+#endif /* __ASM_OUTERCACHE_H */
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index ca88e6a..4ace45e 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -60,6 +60,8 @@
#include <linux/linkage.h>
#include <linux/irqflags.h>
+#include <asm/outercache.h>
+
#define __exception __attribute__((section(".exception.text")))
struct thread_info;
@@ -137,10 +139,12 @@
#define dmb() __asm__ __volatile__ ("" : : : "memory")
#endif
-#if __LINUX_ARM_ARCH__ >= 7 || defined(CONFIG_SMP)
-#define mb() dmb()
+#ifdef CONFIG_ARCH_HAS_BARRIERS
+#include <mach/barriers.h>
+#elif __LINUX_ARM_ARCH__ >= 7 || defined(CONFIG_SMP)
+#define mb() do { dsb(); outer_sync(); } while (0)
#define rmb() dmb()
-#define wmb() dmb()
+#define wmb() mb()
#else
#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
@@ -152,9 +156,9 @@
#define smp_rmb() barrier()
#define smp_wmb() barrier()
#else
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
+#define smp_mb() dmb()
+#define smp_rmb() dmb()
+#define smp_wmb() dmb()
#endif
#define read_barrier_depends() do { } while(0)
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 60c62c3..610e0f5 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -393,6 +393,14 @@
/*
* Setup an empty pt_regs. Fill SP and PC fields as
* they're needed by longjmp_break_handler.
+ *
+ * We allocate some slack between the original SP and start of
+ * our fabricated regs. To be precise we want to have worst case
+ * covered which is STMFD with all 16 regs so we allocate 2 *
+ * sizeof(struct_pt_regs)).
+ *
+ * This is to prevent any simulated instruction from writing
+ * over the regs when they are accessing the stack.
*/
"sub sp, %0, %1 \n\t"
"ldr r0, ="__stringify(JPROBE_MAGIC_ADDR)"\n\t"
@@ -410,7 +418,7 @@
"ldmia sp, {r0 - pc} \n\t"
:
: "r" (kcb->jprobe_saved_regs.ARM_sp),
- "I" (sizeof(struct pt_regs)),
+ "I" (sizeof(struct pt_regs) * 2),
"J" (offsetof(struct pt_regs, ARM_sp)),
"J" (offsetof(struct pt_regs, ARM_pc)),
"J" (offsetof(struct pt_regs, ARM_cpsr))
diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S
index 5025c86..938fc14 100644
--- a/arch/arm/lib/memmove.S
+++ b/arch/arm/lib/memmove.S
@@ -74,7 +74,7 @@
rsb ip, ip, #32
addne pc, pc, ip @ C is always clear here
b 7f
-6: nop
+6: W(nop)
W(ldr) r3, [r1, #-4]!
W(ldr) r4, [r1, #-4]!
W(ldr) r5, [r1, #-4]!
@@ -85,7 +85,7 @@
add pc, pc, ip
nop
- nop
+ W(nop)
W(str) r3, [r0, #-4]!
W(str) r4, [r0, #-4]!
W(str) r5, [r0, #-4]!
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index c4ed9f9..5bd7c89 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -736,6 +736,12 @@
config OUTER_CACHE
bool
+config OUTER_CACHE_SYNC
+ bool
+ help
+ The outer cache has a outer_cache_fns.sync function pointer
+ that can be used to drain the write buffer of the outer cache.
+
config CACHE_FEROCEON_L2
bool "Enable the Feroceon L2 cache controller"
depends on ARCH_KIRKWOOD || ARCH_MV78XX0
@@ -757,6 +763,7 @@
REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK || ARCH_OMAP4
default y
select OUTER_CACHE
+ select OUTER_CACHE_SYNC
help
This option enables the L2x0 PrimeCell.
@@ -781,3 +788,9 @@
int
default 6 if ARM_L1_CACHE_SHIFT_6
default 5
+
+config ARCH_HAS_BARRIERS
+ bool
+ help
+ This option allows the use of custom mandatory barriers
+ included via the mach/barriers.h file.
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 0733463..21ad68b 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -93,6 +93,15 @@
}
#endif
+static void l2x0_cache_sync(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&l2x0_lock, flags);
+ cache_sync();
+ spin_unlock_irqrestore(&l2x0_lock, flags);
+}
+
static inline void l2x0_inv_all(void)
{
unsigned long flags;
@@ -225,6 +234,7 @@
outer_cache.inv_range = l2x0_inv_range;
outer_cache.clean_range = l2x0_clean_range;
outer_cache.flush_range = l2x0_flush_range;
+ outer_cache.sync = l2x0_cache_sync;
printk(KERN_INFO "L2X0 cache controller enabled\n");
}
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 7f3f59f..a420cb9 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -545,7 +545,7 @@
*/
elf_hwcap |= HWCAP_VFP;
#ifdef CONFIG_VFPv3
- if (VFP_arch >= 3) {
+ if (VFP_arch >= 2) {
elf_hwcap |= HWCAP_VFPv3;
/*
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 12ac9cd..df1bae9 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1370,6 +1370,12 @@
{
struct at91_udc *udc = _udc;
u32 rescans = 5;
+ int disable_clock = 0;
+
+ if (!udc->clocked) {
+ clk_on(udc);
+ disable_clock = 1;
+ }
while (rescans--) {
u32 status;
@@ -1458,6 +1464,9 @@
}
}
+ if (disable_clock)
+ clk_off(udc);
+
return IRQ_HANDLED;
}
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 6816be6..8b10386 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -14,6 +14,9 @@
#ifndef ASMARM_AMBA_H
#define ASMARM_AMBA_H
+#include <linux/device.h>
+#include <linux/resource.h>
+
#define AMBA_NR_IRQS 2
struct amba_device {
diff --git a/include/linux/amba/pl061.h b/include/linux/amba/pl061.h
index b4fbd98..5ddd9ad 100644
--- a/include/linux/amba/pl061.h
+++ b/include/linux/amba/pl061.h
@@ -1,3 +1,5 @@
+#include <linux/types.h>
+
/* platform data for the PL061 GPIO driver */
struct pl061_platform_data {