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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-01 14:43:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-01 14:43:57 -0700 |
| commit | 2e175a90047a2dbc76fde169c990164895b25dfc (patch) | |
| tree | ddff26c8c44a4cb10594753785f7c8ee03000861 /include/asm-arm/system.h | |
| parent | c21b1e4d9b0c263a35f67eed2b025d053566c557 (diff) | |
| parent | 398e692fd5cecdd25d311b47bbae69f7bac3a3cb (diff) | |
| download | blackbird-op-linux-2e175a90047a2dbc76fde169c990164895b25dfc.tar.gz blackbird-op-linux-2e175a90047a2dbc76fde169c990164895b25dfc.zip | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4298/1: fix memory barriers for DMA coherent and SMP platforms
[ARM] 4295/2: Fix error-handling in pxaficp_ir.c (version 2)
[ARM] Fix __NR_kexec_load
[ARM] Export dma_channel_active()
[ARM] 4296/1: ixp4xx: compile fix
[ARM] 4289/1: AT91: SAM9260 NAND flash timing
Diffstat (limited to 'include/asm-arm/system.h')
| -rw-r--r-- | include/asm-arm/system.h | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h index f06d8a43fdee..69134c7518c1 100644 --- a/include/asm-arm/system.h +++ b/include/asm-arm/system.h @@ -3,6 +3,7 @@ #ifdef __KERNEL__ +#include <asm/memory.h> #define CPU_ARCH_UNKNOWN 0 #define CPU_ARCH_ARMv3 1 @@ -154,7 +155,7 @@ extern unsigned int user_debug; #define vectors_high() (0) #endif -#if __LINUX_ARM_ARCH__ >= 6 +#if defined(CONFIG_CPU_XSC3) || __LINUX_ARM_ARCH__ >= 6 #define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ : : "r" (0) : "memory") #define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ @@ -168,22 +169,23 @@ extern unsigned int user_debug; #define dmb() __asm__ __volatile__ ("" : : : "memory") #endif -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define read_barrier_depends() do { } while(0) - -#ifdef CONFIG_SMP -#define smp_mb() dmb() -#define smp_rmb() dmb() -#define smp_wmb() dmb() -#define smp_read_barrier_depends() read_barrier_depends() +#ifndef CONFIG_SMP +#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() #else -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define smp_read_barrier_depends() read_barrier_depends() -#endif /* CONFIG_SMP */ +#define mb() dmb() +#define rmb() dmb() +#define wmb() dmb() +#define smp_mb() dmb() +#define smp_rmb() dmb() +#define smp_wmb() dmb() +#endif +#define read_barrier_depends() do { } while(0) +#define smp_read_barrier_depends() do { } while(0) #define set_mb(var, value) do { var = value; smp_mb(); } while (0) #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t"); |
