diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2008-09-16 17:48:51 (GMT) |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2008-10-11 15:18:52 (GMT) |
commit | 384740dc49ea651ba350704d13ff6be9976e37fe (patch) | |
tree | a6e80cad287ccae7a86d81bfa692fc96889c88ed /arch/mips/include/asm/edac.h | |
parent | e8c7c482347574ecdd45c43e32c332d5fc2ece61 (diff) | |
download | linux-fsl-qoriq-384740dc49ea651ba350704d13ff6be9976e37fe.tar.xz |
MIPS: Move headfiles to new location below arch/mips/include
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/edac.h')
-rw-r--r-- | arch/mips/include/asm/edac.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/include/asm/edac.h b/arch/mips/include/asm/edac.h new file mode 100644 index 0000000..4da0c1f --- /dev/null +++ b/arch/mips/include/asm/edac.h @@ -0,0 +1,34 @@ +#ifndef ASM_EDAC_H +#define ASM_EDAC_H + +/* ECC atomic, DMA, SMP and interrupt safe scrub function */ + +static inline void atomic_scrub(void *va, u32 size) +{ + unsigned long *virt_addr = va; + unsigned long temp; + u32 i; + + for (i = 0; i < size / sizeof(unsigned long); i++) { + /* + * Very carefully read and write to memory atomically + * so we are interrupt, DMA and SMP safe. + * + * Intel: asm("lock; addl $0, %0"::"m"(*virt_addr)); + */ + + __asm__ __volatile__ ( + " .set mips2 \n" + "1: ll %0, %1 # atomic_scrub \n" + " addu %0, $0 \n" + " sc %0, %1 \n" + " beqz %0, 1b \n" + " .set mips0 \n" + : "=&r" (temp), "=m" (*virt_addr) + : "m" (*virt_addr)); + + virt_addr++; + } +} + +#endif |