1 /* MN10300 Cache flushing 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11 #ifndef _ASM_CACHEFLUSH_H 12 #define _ASM_CACHEFLUSH_H 13 14 #ifndef __ASSEMBLY__ 15 16 /* Keep includes the same across arches. */ 17 #include <linux/mm.h> 18 19 /* 20 * virtually-indexed cache managment (our cache is physically indexed) 21 */ 22 #define flush_cache_all() do {} while (0) 23 #define flush_cache_mm(mm) do {} while (0) 24 #define flush_cache_dup_mm(mm) do {} while (0) 25 #define flush_cache_range(mm, start, end) do {} while (0) 26 #define flush_cache_page(vma, vmaddr, pfn) do {} while (0) 27 #define flush_cache_vmap(start, end) do {} while (0) 28 #define flush_cache_vunmap(start, end) do {} while (0) 29 #define flush_dcache_page(page) do {} while (0) 30 #define flush_dcache_mmap_lock(mapping) do {} while (0) 31 #define flush_dcache_mmap_unlock(mapping) do {} while (0) 32 33 /* 34 * physically-indexed cache managment 35 */ 36 #ifndef CONFIG_MN10300_CACHE_DISABLED 37 38 extern void flush_icache_range(unsigned long start, unsigned long end); 39 extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg); 40 41 #else 42 43 #define flush_icache_range(start, end) do {} while (0) 44 #define flush_icache_page(vma, pg) do {} while (0) 45 46 #endif 47 48 #define flush_icache_user_range(vma, pg, adr, len) \ 49 flush_icache_range(adr, adr + len) 50 51 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 52 do { \ 53 memcpy(dst, src, len); \ 54 flush_icache_page(vma, page); \ 55 } while (0) 56 57 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 58 memcpy(dst, src, len) 59 60 /* 61 * primitive routines 62 */ 63 #ifndef CONFIG_MN10300_CACHE_DISABLED 64 extern void mn10300_icache_inv(void); 65 extern void mn10300_dcache_inv(void); 66 extern void mn10300_dcache_inv_page(unsigned start); 67 extern void mn10300_dcache_inv_range(unsigned start, unsigned end); 68 extern void mn10300_dcache_inv_range2(unsigned start, unsigned size); 69 #ifdef CONFIG_MN10300_CACHE_WBACK 70 extern void mn10300_dcache_flush(void); 71 extern void mn10300_dcache_flush_page(unsigned start); 72 extern void mn10300_dcache_flush_range(unsigned start, unsigned end); 73 extern void mn10300_dcache_flush_range2(unsigned start, unsigned size); 74 extern void mn10300_dcache_flush_inv(void); 75 extern void mn10300_dcache_flush_inv_page(unsigned start); 76 extern void mn10300_dcache_flush_inv_range(unsigned start, unsigned end); 77 extern void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size); 78 #else 79 #define mn10300_dcache_flush() do {} while (0) 80 #define mn10300_dcache_flush_page(start) do {} while (0) 81 #define mn10300_dcache_flush_range(start, end) do {} while (0) 82 #define mn10300_dcache_flush_range2(start, size) do {} while (0) 83 #define mn10300_dcache_flush_inv() mn10300_dcache_inv() 84 #define mn10300_dcache_flush_inv_page(start) \ 85 mn10300_dcache_inv_page((start)) 86 #define mn10300_dcache_flush_inv_range(start, end) \ 87 mn10300_dcache_inv_range((start), (end)) 88 #define mn10300_dcache_flush_inv_range2(start, size) \ 89 mn10300_dcache_inv_range2((start), (size)) 90 #endif /* CONFIG_MN10300_CACHE_WBACK */ 91 #else 92 #define mn10300_icache_inv() do {} while (0) 93 #define mn10300_dcache_inv() do {} while (0) 94 #define mn10300_dcache_inv_page(start) do {} while (0) 95 #define mn10300_dcache_inv_range(start, end) do {} while (0) 96 #define mn10300_dcache_inv_range2(start, size) do {} while (0) 97 #define mn10300_dcache_flush() do {} while (0) 98 #define mn10300_dcache_flush_inv_page(start) do {} while (0) 99 #define mn10300_dcache_flush_inv() do {} while (0) 100 #define mn10300_dcache_flush_inv_range(start, end) do {} while (0) 101 #define mn10300_dcache_flush_inv_range2(start, size) do {} while (0) 102 #define mn10300_dcache_flush_page(start) do {} while (0) 103 #define mn10300_dcache_flush_range(start, end) do {} while (0) 104 #define mn10300_dcache_flush_range2(start, size) do {} while (0) 105 #endif /* CONFIG_MN10300_CACHE_DISABLED */ 106 107 /* 108 * internal debugging function 109 */ 110 #ifdef CONFIG_DEBUG_PAGEALLOC 111 extern void kernel_map_pages(struct page *page, int numpages, int enable); 112 #endif 113 114 #endif /* __ASSEMBLY__ */ 115 116 #endif /* _ASM_CACHEFLUSH_H */ 117