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authorDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
committerDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /arch/arm/include/asm/io.h
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
Diffstat (limited to 'arch/arm/include/asm/io.h')
-rw-r--r--arch/arm/include/asm/io.h33
1 files changed, 17 insertions, 16 deletions
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 20e0f7c9e03..d66605dea55 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -95,6 +95,15 @@ static inline void __iomem *__typesafe_io(unsigned long addr)
return (void __iomem *)addr;
}
+/* IO barriers */
+#ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE
+#define __iormb() rmb()
+#define __iowmb() wmb()
+#else
+#define __iormb() do { } while (0)
+#define __iowmb() do { } while (0)
+#endif
+
/*
* Now, pick up the machine-defined IO definitions
*/
@@ -125,17 +134,17 @@ static inline void __iomem *__typesafe_io(unsigned long addr)
* The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
*/
#ifdef __io
-#define outb(v,p) __raw_writeb(v,__io(p))
-#define outw(v,p) __raw_writew((__force __u16) \
- cpu_to_le16(v),__io(p))
-#define outl(v,p) __raw_writel((__force __u32) \
- cpu_to_le32(v),__io(p))
+#define outb(v,p) ({ __iowmb(); __raw_writeb(v,__io(p)); })
+#define outw(v,p) ({ __iowmb(); __raw_writew((__force __u16) \
+ cpu_to_le16(v),__io(p)); })
+#define outl(v,p) ({ __iowmb(); __raw_writel((__force __u32) \
+ cpu_to_le32(v),__io(p)); })
-#define inb(p) ({ __u8 __v = __raw_readb(__io(p)); __v; })
+#define inb(p) ({ __u8 __v = __raw_readb(__io(p)); __iormb(); __v; })
#define inw(p) ({ __u16 __v = le16_to_cpu((__force __le16) \
- __raw_readw(__io(p))); __v; })
+ __raw_readw(__io(p))); __iormb(); __v; })
#define inl(p) ({ __u32 __v = le32_to_cpu((__force __le32) \
- __raw_readl(__io(p))); __v; })
+ __raw_readl(__io(p))); __iormb(); __v; })
#define outsb(p,d,l) __raw_writesb(__io(p),d,l)
#define outsw(p,d,l) __raw_writesw(__io(p),d,l)
@@ -192,14 +201,6 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
#define writel_relaxed(v,c) ((void)__raw_writel((__force u32) \
cpu_to_le32(v),__mem_pci(c)))
-#ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE
-#define __iormb() rmb()
-#define __iowmb() wmb()
-#else
-#define __iormb() do { } while (0)
-#define __iowmb() do { } while (0)
-#endif
-
#define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(); __v; })
#define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(); __v; })
#define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; })