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
  23 extern void mn10300_local_icache_inv(void);
  24 extern void mn10300_local_icache_inv_page(unsigned long start);
  25 extern void mn10300_local_icache_inv_range(unsigned long start, unsigned long end);
  26 extern void mn10300_local_icache_inv_range2(unsigned long start, unsigned long size);
  27 extern void mn10300_local_dcache_inv(void);
  28 extern void mn10300_local_dcache_inv_page(unsigned long start);
  29 extern void mn10300_local_dcache_inv_range(unsigned long start, unsigned long end);
  30 extern void mn10300_local_dcache_inv_range2(unsigned long start, unsigned long size);
  31 extern void mn10300_icache_inv(void);
  32 extern void mn10300_icache_inv_page(unsigned long start);
  33 extern void mn10300_icache_inv_range(unsigned long start, unsigned long end);
  34 extern void mn10300_icache_inv_range2(unsigned long start, unsigned long size);
  35 extern void mn10300_dcache_inv(void);
  36 extern void mn10300_dcache_inv_page(unsigned long start);
  37 extern void mn10300_dcache_inv_range(unsigned long start, unsigned long end);
  38 extern void mn10300_dcache_inv_range2(unsigned long start, unsigned long size);
  39 #ifdef CONFIG_MN10300_CACHE_WBACK
  40 extern void mn10300_local_dcache_flush(void);
  41 extern void mn10300_local_dcache_flush_page(unsigned long start);
  42 extern void mn10300_local_dcache_flush_range(unsigned long start, unsigned long end);
  43 extern void mn10300_local_dcache_flush_range2(unsigned long start, unsigned long size);
  44 extern void mn10300_local_dcache_flush_inv(void);
  45 extern void mn10300_local_dcache_flush_inv_page(unsigned long start);
  46 extern void mn10300_local_dcache_flush_inv_range(unsigned long start, unsigned long end);
  47 extern void mn10300_local_dcache_flush_inv_range2(unsigned long start, unsigned long size);
  48 extern void mn10300_dcache_flush(void);
  49 extern void mn10300_dcache_flush_page(unsigned long start);
  50 extern void mn10300_dcache_flush_range(unsigned long start, unsigned long end);
  51 extern void mn10300_dcache_flush_range2(unsigned long start, unsigned long size);
  52 extern void mn10300_dcache_flush_inv(void);
  53 extern void mn10300_dcache_flush_inv_page(unsigned long start);
  54 extern void mn10300_dcache_flush_inv_range(unsigned long start, unsigned long end);
  55 extern 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)
 135 extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
 136 extern void flush_icache_range(unsigned long start, unsigned long end);
 137 #elif defined(CONFIG_MN10300_CACHE_INV_ICACHE)
 138 static 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 }
 143 extern 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
 166 extern void kernel_map_pages(struct page *page, int numpages, int enable);
 167 #endif
 168
 169 #endif /* __ASSEMBLY__ */
 170
 171 #endif /* _ASM_CACHEFLUSH_H */