1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle at alii 7 * Copyright (C) 1999 Silicon Graphics, Inc. 8 */ 9 #ifndef __ASM_CACHEFLUSH_H 10 #define __ASM_CACHEFLUSH_H 11 12 #include <linux/config.h> 13 14 struct mm_struct; 15 struct vm_area_struct; 16 struct page; 17 18 /* Cache flushing: 19 * 20 * - flush_cache_all() flushes entire cache 21 * - flush_cache_mm(mm) flushes the specified mm context's cache lines 22 * - flush_cache_page(mm, vmaddr) flushes a single page 23 * - flush_cache_range(mm, start, end) flushes a range of pages 24 * - flush_page_to_ram(page) write back kernel page to ram 25 * - flush_icache_range(start, end) flush a range of instructions 26 * 27 * MIPS specific flush operations: 28 * 29 * - flush_cache_sigtramp() flush signal trampoline 30 * - flush_icache_all() flush the entire instruction cache 31 * - flush_data_cache_page() flushes a page from the data cache 32 */ 33 extern void (*_flush_cache_all)(void); 34 extern void (*___flush_cache_all)(void); 35 extern void (*_flush_cache_mm)(struct mm_struct *mm); 36 extern void (*_flush_cache_range)(struct mm_struct *mm, unsigned long start, 37 unsigned long end); 38 extern void (*_flush_cache_page)(struct vm_area_struct *vma, 39 unsigned long page); 40 extern void flush_dcache_page(struct page * page); 41 extern void (*_flush_icache_range)(unsigned long start, unsigned long end); 42 extern void (*_flush_icache_page)(struct vm_area_struct *vma, 43 struct page *page); 44 45 extern void (*_flush_cache_sigtramp)(unsigned long addr); 46 extern void (*_flush_icache_all)(void); 47 extern void (*_flush_data_cache_page)(unsigned long addr); 48 49 #define flush_cache_all() _flush_cache_all() 50 #define __flush_cache_all() ___flush_cache_all() 51 #define flush_cache_mm(mm) _flush_cache_mm(mm) 52 #define flush_cache_range(mm,start,end) _flush_cache_range(mm,start,end) 53 #define flush_cache_page(vma,page) _flush_cache_page(vma, page) 54 #define flush_page_to_ram(page) do { } while (0) 55 56 #define flush_icache_range(start, end) _flush_icache_range(start,end) 57 #define flush_icache_user_range(vma, page, addr, len) \ 58 _flush_icache_page((vma), (page)) 59 #define flush_icache_page(vma, page) _flush_icache_page(vma, page) 60 61 #define flush_cache_sigtramp(addr) _flush_cache_sigtramp(addr) 62 #define flush_data_cache_page(addr) _flush_data_cache_page(addr) 63 #ifdef CONFIG_VTAG_ICACHE 64 #define flush_icache_all() _flush_icache_all() 65 #else 66 #define flush_icache_all() do { } while(0) 67 #endif 68 69 #endif /* __ASM_CACHEFLUSH_H */ 70