diff options
Diffstat (limited to 'include/asm-sh/cacheflush.h')
| -rw-r--r-- | include/asm-sh/cacheflush.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h index 07f62ec..aa558da 100644 --- a/include/asm-sh/cacheflush.h +++ b/include/asm-sh/cacheflush.h @@ -1,16 +1,47 @@ #ifndef __ASM_SH_CACHEFLUSH_H #define __ASM_SH_CACHEFLUSH_H + #ifdef __KERNEL__ -#include <linux/mm.h> +#ifdef CONFIG_CACHE_OFF +/* + * Nothing to do when the cache is disabled, initial flush and explicit + * disabling is handled at CPU init time. + * + * See arch/sh/kernel/cpu/init.c:cache_init(). + */ +#define p3_cache_init() do { } while (0) +#define flush_cache_all() do { } while (0) +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) +#define flush_cache_range(vma, start, end) do { } while (0) +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define flush_dcache_page(page) do { } while (0) +#define flush_icache_range(start, end) do { } while (0) +#define flush_icache_page(vma,pg) do { } while (0) +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) +#define flush_cache_sigtramp(vaddr) do { } while (0) +#define flush_icache_user_range(vma,pg,adr,len) do { } while (0) +#define __flush_wback_region(start, size) do { (void)(start); } while (0) +#define __flush_purge_region(start, size) do { (void)(start); } while (0) +#define __flush_invalidate_region(start, size) do { (void)(start); } while (0) +#else #include <asm/cpu/cacheflush.h> +/* + * Consistent DMA requires that the __flush_xxx() primitives must be set + * for any of the enabled non-coherent caches (most of the UP CPUs), + * regardless of PIPT or VIPT cache configurations. + */ + /* Flush (write-back only) a region (smaller than a page) */ extern void __flush_wback_region(void *start, int size); /* Flush (write-back & invalidate) a region (smaller than a page) */ extern void __flush_purge_region(void *start, int size); /* Flush (invalidate only) a region (smaller than a page) */ extern void __flush_invalidate_region(void *start, int size); +#endif #define flush_cache_vmap(start, end) flush_cache_all() #define flush_cache_vunmap(start, end) flush_cache_all() |