diff options
author | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
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committer | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
commit | 86d688984deefa3ae5a802880c11f2b408b5d6cf (patch) | |
tree | 7ea5e8189b0a774626d3ed7c3c87df2495a4c4a0 /arch/avr32/include/asm/cache.h | |
parent | 93c06cbbf9fea5d5be1778febb7fa9ab1a74e5f5 (diff) | |
parent | 4c246edd2550304df5b766cc841584b2bb058843 (diff) |
Merge branch 'master' into next
Diffstat (limited to 'arch/avr32/include/asm/cache.h')
-rw-r--r-- | arch/avr32/include/asm/cache.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/avr32/include/asm/cache.h b/arch/avr32/include/asm/cache.h new file mode 100644 index 00000000000..d3cf35ab11a --- /dev/null +++ b/arch/avr32/include/asm/cache.h @@ -0,0 +1,38 @@ +#ifndef __ASM_AVR32_CACHE_H +#define __ASM_AVR32_CACHE_H + +#define L1_CACHE_SHIFT 5 +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) + +/* + * Memory returned by kmalloc() may be used for DMA, so we must make + * sure that all such allocations are cache aligned. Otherwise, + * unrelated code may cause parts of the buffer to be read into the + * cache before the transfer is done, causing old data to be seen by + * the CPU. + */ +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + +#ifndef __ASSEMBLER__ +struct cache_info { + unsigned int ways; + unsigned int sets; + unsigned int linesz; +}; +#endif /* __ASSEMBLER */ + +/* Cache operation constants */ +#define ICACHE_FLUSH 0x00 +#define ICACHE_INVALIDATE 0x01 +#define ICACHE_LOCK 0x02 +#define ICACHE_UNLOCK 0x03 +#define ICACHE_PREFETCH 0x04 + +#define DCACHE_FLUSH 0x08 +#define DCACHE_LOCK 0x09 +#define DCACHE_UNLOCK 0x0a +#define DCACHE_INVALIDATE 0x0b +#define DCACHE_CLEAN 0x0c +#define DCACHE_CLEAN_INVAL 0x0d + +#endif /* __ASM_AVR32_CACHE_H */ |