| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-sh/cpu-sh4/cacheflush.h |
| 3 | * |
| 4 | * Copyright (C) 1999 Niibe Yutaka |
| 5 | * Copyright (C) 2003 Paul Mundt |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General Public |
| 8 | * License. See the file "COPYING" in the main directory of this archive |
| 9 | * for more details. |
| 10 | */ |
| 11 | #ifndef __ASM_CPU_SH4_CACHEFLUSH_H |
| 12 | #define __ASM_CPU_SH4_CACHEFLUSH_H |
| 13 | |
| 14 | /* |
| 15 | * Caches are broken on SH-4 (unless we use write-through |
| 16 | * caching; in which case they're only semi-broken), |
| 17 | * so we need them. |
| 18 | */ |
| 19 | |
| 20 | /* Page is 4K, OC size is 16K, there are four lines. */ |
| 21 | #define CACHE_ALIAS 0x00003000 |
| 22 | |
| 23 | struct page; |
| 24 | struct mm_struct; |
| 25 | struct vm_area_struct; |
| 26 | |
| 27 | extern void flush_cache_all(void); |
| 28 | extern void flush_cache_mm(struct mm_struct *mm); |
| 29 | extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, |
| 30 | unsigned long end); |
| 31 | extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); |
| 32 | extern void flush_dcache_page(struct page *pg); |
| 33 | |
| 34 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
| 35 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| 36 | |
| 37 | extern void flush_icache_range(unsigned long start, unsigned long end); |
| 38 | extern void flush_cache_sigtramp(unsigned long addr); |
| 39 | extern void flush_icache_user_range(struct vm_area_struct *vma, |
| 40 | struct page *page, unsigned long addr, |
| 41 | int len); |
| 42 | |
| 43 | #define flush_icache_page(vma,pg) do { } while (0) |
| 44 | |
| 45 | /* Initialization of P3 area for copy_user_page */ |
| 46 | extern void p3_cache_init(void); |
| 47 | |
| 48 | #define PG_mapped PG_arch_1 |
| 49 | |
| 50 | /* We provide our own get_unmapped_area to avoid cache alias issue */ |
| 51 | #define HAVE_ARCH_UNMAPPED_AREA |
| 52 | |
| 53 | #ifdef CONFIG_MMU |
| 54 | extern int remap_area_pages(unsigned long addr, unsigned long phys_addr, |
| 55 | unsigned long size, unsigned long flags); |
| 56 | #else /* CONFIG_MMU */ |
| 57 | static inline int remap_area_pages(unsigned long addr, unsigned long phys_addr, |
| 58 | unsigned long size, unsigned long flags) |
| 59 | { |
| 60 | return 0; |
| 61 | } |
| 62 | #endif /* CONFIG_MMU */ |
| 63 | #endif /* __ASM_CPU_SH4_CACHEFLUSH_H */ |
| 64 | |