LXR linux/arch/mn10300/include/asm/cacheflush.h

   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