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 management (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 ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 30#define flush_dcache_page(page) do {} while (0) 31#define flush_dcache_mmap_lock(mapping) do {} while (0) 32#define flush_dcache_mmap_unlock(mapping) do {} while (0) 33 34/* 35 * physically-indexed cache management 36 */ 37#ifndef CONFIG_MN10300_CACHE_DISABLED 38 39extern void flush_icache_range(unsigned long start, unsigned long end); 40extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg); 41 42#else 43 44#define flush_icache_range(start, end) do {} while (0) 45#define flush_icache_page(vma, pg) do {} while (0) 46 47#endif 48 49#define flush_icache_user_range(vma, pg, adr, len) \ 50 flush_icache_range(adr, adr + len) 51 52#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 53 do { \ 54 memcpy(dst, src, len); \ 55 flush_icache_page(vma, page); \ 56 } while (0) 57 58#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 59 memcpy(dst, src, len) 60 61/* 62 * primitive routines 63 */ 64#ifndef CONFIG_MN10300_CACHE_DISABLED 65extern void mn10300_icache_inv(void); 66extern void mn10300_dcache_inv(void); 67extern void mn10300_dcache_inv_page(unsigned start); 68extern void mn10300_dcache_inv_range(unsigned start, unsigned end); 69extern void mn10300_dcache_inv_range2(unsigned start, unsigned size); 70#ifdef CONFIG_MN10300_CACHE_WBACK 71extern void mn10300_dcache_flush(void); 72extern void mn10300_dcache_flush_page(unsigned start); 73extern void mn10300_dcache_flush_range(unsigned start, unsigned end); 74extern void mn10300_dcache_flush_range2(unsigned start, unsigned size); 75extern void mn10300_dcache_flush_inv(void); 76extern void mn10300_dcache_flush_inv_page(unsigned start); 77extern void mn10300_dcache_flush_inv_range(unsigned start, unsigned end); 78extern void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size); 79#else 80#define mn10300_dcache_flush() do {} while (0) 81#define mn10300_dcache_flush_page(start) do {} while (0) 82#define mn10300_dcache_flush_range(start, end) do {} while (0) 83#define mn10300_dcache_flush_range2(start, size) do {} while (0) 84#define mn10300_dcache_flush_inv() mn10300_dcache_inv() 85#define mn10300_dcache_flush_inv_page(start) \ 86 mn10300_dcache_inv_page((start)) 87#define mn10300_dcache_flush_inv_range(start, end) \ 88 mn10300_dcache_inv_range((start), (end)) 89#define mn10300_dcache_flush_inv_range2(start, size) \ 90 mn10300_dcache_inv_range2((start), (size)) 91#endif /* CONFIG_MN10300_CACHE_WBACK */ 92#else 93#define mn10300_icache_inv() do {} while (0) 94#define mn10300_dcache_inv() do {} while (0) 95#define mn10300_dcache_inv_page(start) do {} while (0) 96#define mn10300_dcache_inv_range(start, end) do {} while (0) 97#define mn10300_dcache_inv_range2(start, size) do {} while (0) 98#define mn10300_dcache_flush() do {} while (0) 99#define mn10300_dcache_flush_inv_page(start) do {} while (0) 100#define mn10300_dcache_flush_inv() do {} while (0) 101#define mn10300_dcache_flush_inv_range(start, end) do {} while (0) 102#define mn10300_dcache_flush_inv_range2(start, size) do {} while (0) 103#define mn10300_dcache_flush_page(start) do {} while (0) 104#define mn10300_dcache_flush_range(start, end) do {} while (0) 105#define mn10300_dcache_flush_range2(start, size) do {} while (0) 106#endif /* CONFIG_MN10300_CACHE_DISABLED */ 107 108/* 109 * internal debugging function 110 */ 111#ifdef CONFIG_DEBUG_PAGEALLOC 112extern void kernel_map_pages(struct page *page, int numpages, int enable); 113#endif 114 115#endif /* __ASSEMBLY__ */ 116 117#endif /* _ASM_CACHEFLUSH_H */ 118