diff options
Diffstat (limited to 'arch/powerpc/include/asm/cache.h')
| -rw-r--r-- | arch/powerpc/include/asm/cache.h | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h index 81de6eb3455..ed0afc1e44a 100644 --- a/arch/powerpc/include/asm/cache.h +++ b/arch/powerpc/include/asm/cache.h @@ -12,8 +12,12 @@ #define L1_CACHE_SHIFT 6 #define MAX_COPY_PREFETCH 4 #elif defined(CONFIG_PPC32) -#define L1_CACHE_SHIFT 5 #define MAX_COPY_PREFETCH 4 +#if defined(CONFIG_PPC_47x) +#define L1_CACHE_SHIFT 7 +#else +#define L1_CACHE_SHIFT 5 +#endif #else /* CONFIG_PPC64 */ #define L1_CACHE_SHIFT 7 #endif @@ -37,9 +41,37 @@ struct ppc64_caches { extern struct ppc64_caches ppc64_caches; #endif /* __powerpc64__ && ! __ASSEMBLY__ */ -#if !defined(__ASSEMBLY__) -#define __read_mostly __attribute__((__section__(".data.read_mostly"))) +#if defined(__ASSEMBLY__) +/* + * For a snooping icache, we still need a dummy icbi to purge all the + * prefetched instructions from the ifetch buffers. We also need a sync + * before the icbi to order the the actual stores to memory that might + * have modified instructions with the icbi. + */ +#define PURGE_PREFETCHED_INS \ + sync; \ + icbi 0,r3; \ + sync; \ + isync + +#else +#define __read_mostly __attribute__((__section__(".data..read_mostly"))) + +#ifdef CONFIG_6xx +extern long _get_L2CR(void); +extern long _get_L3CR(void); +extern void _set_L2CR(unsigned long); +extern void _set_L3CR(unsigned long); +#else +#define _get_L2CR() 0L +#define _get_L3CR() 0L +#define _set_L2CR(val) do { } while(0) +#define _set_L3CR(val) do { } while(0) #endif +extern void cacheable_memzero(void *p, unsigned int nb); +extern void *cacheable_memcpy(void *, const void *, unsigned int); + +#endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_CACHE_H */ |