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 * Primitive routines 21 */ 22#ifdef CONFIG_MN10300_CACHE_ENABLED 23extern void mn10300_local_icache_inv(void); 24extern void mn10300_local_icache_inv_page(unsigned long start); 25extern void mn10300_local_icache_inv_range(unsigned long start, unsigned long end); 26extern void mn10300_local_icache_inv_range2(unsigned long start, unsigned long size); 27extern void mn10300_local_dcache_inv(void); 28extern void mn10300_local_dcache_inv_page(unsigned long start); 29extern void mn10300_local_dcache_inv_range(unsigned long start, unsigned long end); 30extern void mn10300_local_dcache_inv_range2(unsigned long start, unsigned long size); 31extern void mn10300_icache_inv(void); 32extern void mn10300_icache_inv_page(unsigned long start); 33extern void mn10300_icache_inv_range(unsigned long start, unsigned long end); 34extern void mn10300_icache_inv_range2(unsigned long start, unsigned long size); 35extern void mn10300_dcache_inv(void); 36extern void mn10300_dcache_inv_page(unsigned long start); 37extern void mn10300_dcache_inv_range(unsigned long start, unsigned long end); 38extern void mn10300_dcache_inv_range2(unsigned long start, unsigned long size); 39#ifdef CONFIG_MN10300_CACHE_WBACK 40extern void mn10300_local_dcache_flush(void); 41extern void mn10300_local_dcache_flush_page(unsigned long start); 42extern void mn10300_local_dcache_flush_range(unsigned long start, unsigned long end); 43extern void mn10300_local_dcache_flush_range2(unsigned long start, unsigned long size); 44extern void mn10300_local_dcache_flush_inv(void); 45extern void mn10300_local_dcache_flush_inv_page(unsigned long start); 46extern void mn10300_local_dcache_flush_inv_range(unsigned long start, unsigned long end); 47extern void mn10300_local_dcache_flush_inv_range2(unsigned long start, unsigned long size); 48extern void mn10300_dcache_flush(void); 49extern void mn10300_dcache_flush_page(unsigned long start); 50extern void mn10300_dcache_flush_range(unsigned long start, unsigned long end); 51extern void mn10300_dcache_flush_range2(unsigned long start, unsigned long size); 52extern void mn10300_dcache_flush_inv(void); 53extern void mn10300_dcache_flush_inv_page(unsigned long start); 54extern void mn10300_dcache_flush_inv_range(unsigned long start, unsigned long end); 55extern void mn10300_dcache_flush_inv_range2(unsigned long start, unsigned long size); 56#else 57#define mn10300_local_dcache_flush() do {} while (0) 58#define mn10300_local_dcache_flush_page(start) do {} while (0) 59#define mn10300_local_dcache_flush_range(start, end) do {} while (0) 60#define mn10300_local_dcache_flush_range2(start, size) do {} while (0) 61#define mn10300_local_dcache_flush_inv() \ 62 mn10300_local_dcache_inv() 63#define mn10300_local_dcache_flush_inv_page(start) \ 64 mn10300_local_dcache_inv_page(start) 65#define mn10300_local_dcache_flush_inv_range(start, end) \ 66 mn10300_local_dcache_inv_range(start, end) 67#define mn10300_local_dcache_flush_inv_range2(start, size) \ 68 mn10300_local_dcache_inv_range2(start, size) 69#define mn10300_dcache_flush() do {} while (0) 70#define mn10300_dcache_flush_page(start) do {} while (0) 71#define mn10300_dcache_flush_range(start, end) do {} while (0) 72#define mn10300_dcache_flush_range2(start, size) do {} while (0) 73#define mn10300_dcache_flush_inv() mn10300_dcache_inv() 74#define mn10300_dcache_flush_inv_page(start) \ 75 mn10300_dcache_inv_page((start)) 76#define mn10300_dcache_flush_inv_range(start, end) \ 77 mn10300_dcache_inv_range((start), (end)) 78#define mn10300_dcache_flush_inv_range2(start, size) \ 79 mn10300_dcache_inv_range2((start), (size)) 80#endif /* CONFIG_MN10300_CACHE_WBACK */ 81#else 82#define mn10300_local_icache_inv() do {} while (0) 83#define mn10300_local_icache_inv_page(start) do {} while (0) 84#define mn10300_local_icache_inv_range(start, end) do {} while (0) 85#define mn10300_local_icache_inv_range2(start, size) do {} while (0) 86#define mn10300_local_dcache_inv() do {} while (0) 87#define mn10300_local_dcache_inv_page(start) do {} while (0) 88#define mn10300_local_dcache_inv_range(start, end) do {} while (0) 89#define mn10300_local_dcache_inv_range2(start, size) do {} while (0) 90#define mn10300_local_dcache_flush() do {} while (0) 91#define mn10300_local_dcache_flush_inv_page(start) do {} while (0) 92#define mn10300_local_dcache_flush_inv() do {} while (0) 93#define mn10300_local_dcache_flush_inv_range(start, end)do {} while (0) 94#define mn10300_local_dcache_flush_inv_range2(start, size) do {} while (0) 95#define mn10300_local_dcache_flush_page(start) do {} while (0) 96#define mn10300_local_dcache_flush_range(start, end) do {} while (0) 97#define mn10300_local_dcache_flush_range2(start, size) do {} while (0) 98#define mn10300_icache_inv() do {} while (0) 99#define mn10300_icache_inv_page(start) do {} while (0) 100#define mn10300_icache_inv_range(start, end) do {} while (0) 101#define mn10300_icache_inv_range2(start, size) do {} while (0) 102#define mn10300_dcache_inv() do {} while (0) 103#define mn10300_dcache_inv_page(start) do {} while (0) 104#define mn10300_dcache_inv_range(start, end) do {} while (0) 105#define mn10300_dcache_inv_range2(start, size) do {} while (0) 106#define mn10300_dcache_flush() do {} while (0) 107#define mn10300_dcache_flush_inv_page(start) do {} while (0) 108#define mn10300_dcache_flush_inv() do {} while (0) 109#define mn10300_dcache_flush_inv_range(start, end) do {} while (0) 110#define mn10300_dcache_flush_inv_range2(start, size) do {} while (0) 111#define mn10300_dcache_flush_page(start) do {} while (0) 112#define mn10300_dcache_flush_range(start, end) do {} while (0) 113#define mn10300_dcache_flush_range2(start, size) do {} while (0) 114#endif /* CONFIG_MN10300_CACHE_ENABLED */ 115 116/* 117 * Virtually-indexed cache management (our cache is physically indexed) 118 */ 119#define flush_cache_all() do {} while (0) 120#define flush_cache_mm(mm) do {} while (0) 121#define flush_cache_dup_mm(mm) do {} while (0) 122#define flush_cache_range(mm, start, end) do {} while (0) 123#define flush_cache_page(vma, vmaddr, pfn) do {} while (0) 124#define flush_cache_vmap(start, end) do {} while (0) 125#define flush_cache_vunmap(start, end) do {} while (0) 126#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 127#define flush_dcache_page(page) do {} while (0) 128#define flush_dcache_mmap_lock(mapping) do {} while (0) 129#define flush_dcache_mmap_unlock(mapping) do {} while (0) 130 131/* 132 * Physically-indexed cache management 133 */ 134#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE) 135extern void flush_icache_page(struct vm_area_struct *vma, struct page *page); 136extern void flush_icache_range(unsigned long start, unsigned long end); 137#elif defined(CONFIG_MN10300_CACHE_INV_ICACHE) 138static inline void flush_icache_page(struct vm_area_struct *vma, 139 struct page *page) 140{ 141 mn10300_icache_inv_page(page_to_phys(page)); 142} 143extern void flush_icache_range(unsigned long start, unsigned long end); 144#else 145#define flush_icache_range(start, end) do {} while (0) 146#define flush_icache_page(vma, pg) do {} while (0) 147#endif 148 149 150#define flush_icache_user_range(vma, pg, adr, len) \ 151 flush_icache_range(adr, adr + len) 152 153#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 154 do { \ 155 memcpy(dst, src, len); \ 156 flush_icache_page(vma, page); \ 157 } while (0) 158 159#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 160 memcpy(dst, src, len) 161 162/* 163 * Internal debugging function 164 */ 165#ifdef CONFIG_DEBUG_PAGEALLOC 166extern void kernel_map_pages(struct page *page, int numpages, int enable); 167#endif 168 169#endif /* __ASSEMBLY__ */ 170 171#endif /* _ASM_CACHEFLUSH_H */ 172