| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-v850/cacheflush.h |
| 3 | * |
| 4 | * Copyright (C) 2001,02,03 NEC Electronics Corporation |
| 5 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General |
| 8 | * Public License. See the file COPYING in the main directory of this |
| 9 | * archive for more details. |
| 10 | * |
| 11 | * Written by Miles Bader <miles@gnu.org> |
| 12 | */ |
| 13 | |
| 14 | #ifndef __V850_CACHEFLUSH_H__ |
| 15 | #define __V850_CACHEFLUSH_H__ |
| 16 | |
| 17 | /* Somebody depends on this; sigh... */ |
| 18 | #include <linux/mm.h> |
| 19 | |
| 20 | #include <asm/machdep.h> |
| 21 | |
| 22 | |
| 23 | /* The following are all used by the kernel in ways that only affect |
| 24 | systems with MMUs, so we don't need them. */ |
| 25 | #define flush_cache_all() ((void)0) |
| 26 | #define flush_cache_mm(mm) ((void)0) |
| 27 | #define flush_cache_range(vma, start, end) ((void)0) |
| 28 | #define flush_cache_page(vma, vmaddr, pfn) ((void)0) |
| 29 | #define flush_dcache_page(page) ((void)0) |
| 30 | #define flush_dcache_mmap_lock(mapping) ((void)0) |
| 31 | #define flush_dcache_mmap_unlock(mapping) ((void)0) |
| 32 | #define flush_cache_vmap(start, end) ((void)0) |
| 33 | #define flush_cache_vunmap(start, end) ((void)0) |
| 34 | |
| 35 | #ifdef CONFIG_NO_CACHE |
| 36 | |
| 37 | /* Some systems have no cache at all, in which case we don't need these |
| 38 | either. */ |
| 39 | #define flush_icache() ((void)0) |
| 40 | #define flush_icache_range(start, end) ((void)0) |
| 41 | #define flush_icache_page(vma,pg) ((void)0) |
| 42 | #define flush_icache_user_range(vma,pg,adr,len) ((void)0) |
| 43 | #define flush_cache_sigtramp(vaddr) ((void)0) |
| 44 | |
| 45 | #else /* !CONFIG_NO_CACHE */ |
| 46 | |
| 47 | struct page; |
| 48 | struct mm_struct; |
| 49 | struct vm_area_struct; |
| 50 | |
| 51 | /* Otherwise, somebody had better define them. */ |
| 52 | extern void flush_icache (void); |
| 53 | extern void flush_icache_range (unsigned long start, unsigned long end); |
| 54 | extern void flush_icache_page (struct vm_area_struct *vma, struct page *page); |
| 55 | extern void flush_icache_user_range (struct vm_area_struct *vma, |
| 56 | struct page *page, |
| 57 | unsigned long adr, int len); |
| 58 | extern void flush_cache_sigtramp (unsigned long addr); |
| 59 | |
| 60 | #endif /* CONFIG_NO_CACHE */ |
| 61 | |
| 62 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| 63 | do { memcpy(dst, src, len); \ |
| 64 | flush_icache_user_range(vma, page, vaddr, len); \ |
| 65 | } while (0) |
| 66 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| 67 | memcpy(dst, src, len) |
| 68 | |
| 69 | #endif /* __V850_CACHEFLUSH_H__ */ |