| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $ |
| 2 | * |
| 3 | * include/asm-sh/cache.h |
| 4 | * |
| 5 | * Copyright 1999 (C) Niibe Yutaka |
| 6 | * Copyright 2002, 2003 (C) Paul Mundt |
| 7 | */ |
| 8 | #ifndef __ASM_SH_CACHE_H |
| 9 | #define __ASM_SH_CACHE_H |
| 10 | #ifdef __KERNEL__ |
| 11 | |
| 12 | #include <asm/cpu/cache.h> |
| 13 | #include <asm/cpu/cacheflush.h> |
| 14 | |
| 15 | #define SH_CACHE_VALID 1 |
| 16 | #define SH_CACHE_UPDATED 2 |
| 17 | #define SH_CACHE_COMBINED 4 |
| 18 | #define SH_CACHE_ASSOC 8 |
| 19 | |
| 20 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) |
| 21 | #define SMP_CACHE_BYTES L1_CACHE_BYTES |
| 22 | |
| 23 | #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1)) |
| 24 | |
| 25 | #define L1_CACHE_SHIFT_MAX 5 /* largest L1 which this arch supports */ |
| 26 | |
| 27 | struct cache_info { |
| 28 | unsigned int ways; |
| 29 | unsigned int sets; |
| 30 | unsigned int linesz; |
| 31 | |
| 32 | unsigned int way_incr; |
| 33 | |
| 34 | unsigned int entry_shift; |
| 35 | unsigned int entry_mask; |
| 36 | |
| 37 | unsigned long flags; |
| 38 | }; |
| 39 | |
| 40 | /* Flush (write-back only) a region (smaller than a page) */ |
| 41 | extern void __flush_wback_region(void *start, int size); |
| 42 | /* Flush (write-back & invalidate) a region (smaller than a page) */ |
| 43 | extern void __flush_purge_region(void *start, int size); |
| 44 | /* Flush (invalidate only) a region (smaller than a page) */ |
| 45 | extern void __flush_invalidate_region(void *start, int size); |
| 46 | |
| 47 | #endif /* __KERNEL__ */ |
| 48 | #endif /* __ASM_SH_CACHE_H */ |