diff options
Diffstat (limited to 'arch/microblaze/include/asm/cacheflush.h')
| -rw-r--r-- | arch/microblaze/include/asm/cacheflush.h | 123 |
1 files changed, 64 insertions, 59 deletions
diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h index 088076e657b3..a6edd356cd08 100644 --- a/arch/microblaze/include/asm/cacheflush.h +++ b/arch/microblaze/include/asm/cacheflush.h @@ -18,6 +18,8 @@ /* Somebody depends on this; sigh... */ #include <linux/mm.h> +/* Look at Documentation/cachetlb.txt */ + /* * Cache handling functions. * Microblaze has a write-through data cache, meaning that the data cache @@ -27,78 +29,81 @@ * instruction cache to make sure we don't fetch old, bad code. */ +/* struct cache, d=dcache, i=icache, fl = flush, iv = invalidate, + * suffix r = range */ +struct scache { + /* icache */ + void (*ie)(void); /* enable */ + void (*id)(void); /* disable */ + void (*ifl)(void); /* flush */ + void (*iflr)(unsigned long a, unsigned long b); + void (*iin)(void); /* invalidate */ + void (*iinr)(unsigned long a, unsigned long b); + /* dcache */ + void (*de)(void); /* enable */ + void (*dd)(void); /* disable */ + void (*dfl)(void); /* flush */ + void (*dflr)(unsigned long a, unsigned long b); + void (*din)(void); /* invalidate */ + void (*dinr)(unsigned long a, unsigned long b); +}; + +/* microblaze cache */ +extern struct scache *mbc; + +void microblaze_cache_init(void); + +#define enable_icache() mbc->ie(); +#define disable_icache() mbc->id(); +#define flush_icache() mbc->ifl(); +#define flush_icache_range(start, end) mbc->iflr(start, end); +#define invalidate_icache() mbc->iin(); +#define invalidate_icache_range(start, end) mbc->iinr(start, end); + + +#define flush_icache_user_range(vma, pg, adr, len) flush_icache(); +#define flush_icache_page(vma, pg) do { } while (0) + +#define enable_dcache() mbc->de(); +#define disable_dcache() mbc->dd(); /* FIXME for LL-temac driver */ -#define invalidate_dcache_range(start, end) \ - __invalidate_dcache_range(start, end) - -#define flush_cache_all() __invalidate_cache_all() -#define flush_cache_mm(mm) do { } while (0) -#define flush_cache_range(vma, start, end) __invalidate_cache_all() -#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define invalidate_dcache() mbc->din(); +#define invalidate_dcache_range(start, end) mbc->dinr(start, end); +#define flush_dcache() mbc->dfl(); +#define flush_dcache_range(start, end) mbc->dflr(start, end); -#define flush_dcache_range(start, end) __invalidate_dcache_range(start, end) #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 +/* D-cache aliasing problem can't happen - cache is between MMU and ram */ #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_icache_range(start, len) __invalidate_icache_range(start, len) -#define flush_icache_page(vma, pg) do { } while (0) - -#ifndef CONFIG_MMU -# define flush_icache_user_range(start, len) do { } while (0) -#else -# define flush_icache_user_range(vma, pg, adr, len) __invalidate_icache_all() - -# define flush_page_to_ram(page) do { } while (0) -# define flush_icache() __invalidate_icache_all() -# define flush_cache_sigtramp(vaddr) \ - __invalidate_icache_range(vaddr, vaddr + 8) - -# define flush_dcache_mmap_lock(mapping) do { } while (0) -# define flush_dcache_mmap_unlock(mapping) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) -# define flush_cache_dup_mm(mm) do { } while (0) +/* MS: kgdb code use this macro, wrong len with FLASH */ +#if 0 +#define flush_cache_range(vma, start, len) { \ + flush_icache_range((unsigned) (start), (unsigned) (start) + (len)); \ + flush_dcache_range((unsigned) (start), (unsigned) (start) + (len)); \ +} #endif -#define flush_cache_vmap(start, end) do { } while (0) -#define flush_cache_vunmap(start, end) do { } while (0) - -struct page; -struct mm_struct; -struct vm_area_struct; - -/* see arch/microblaze/kernel/cache.c */ -extern void __invalidate_icache_all(void); -extern void __invalidate_icache_range(unsigned long start, unsigned long end); -extern void __invalidate_icache_page(struct vm_area_struct *vma, - struct page *page); -extern void __invalidate_icache_user_range(struct vm_area_struct *vma, - struct page *page, - unsigned long adr, int len); -extern void __invalidate_cache_sigtramp(unsigned long addr); - -extern void __invalidate_dcache_all(void); -extern void __invalidate_dcache_range(unsigned long start, unsigned long end); -extern void __invalidate_dcache_page(struct vm_area_struct *vma, - struct page *page); -extern void __invalidate_dcache_user_range(struct vm_area_struct *vma, - struct page *page, - unsigned long adr, int len); - -extern inline void __invalidate_cache_all(void) -{ - __invalidate_icache_all(); - __invalidate_dcache_all(); -} +#define flush_cache_range(vma, start, len) do { } while (0) -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ -do { memcpy((dst), (src), (len)); \ - flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \ +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { \ + memcpy((dst), (src), (len)); \ + flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \ } while (0) -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - memcpy((dst), (src), (len)) +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ +do { \ + memcpy((dst), (src), (len)); \ +} while (0) #endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */ |