include/asm-mips64/cacheflush.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
   7  * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
   8  */
   9 #ifndef _ASM_CACHEFLUSH_H
  10 #define _ASM_CACHEFLUSH_H
  11
  12 #include <linux/config.h>
  13
  14 /* Keep includes the same across arches.  */
  15 #include <linux/mm.h>
  16
  17 /* Cache flushing:
  18  *
  19  *  - flush_cache_all() flushes entire cache
  20  *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
  21  *  - flush_cache_page(mm, vmaddr) flushes a single page
  22  *  - flush_cache_range(vma, start, end) flushes a range of pages
  23  *  - flush_icache_range(start, end) flush a range of instructions
  24  *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
  25  *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
  26  *
  27  * MIPS specific flush operations:
  28  *
  29  *  - flush_cache_sigtramp() flush signal trampoline
  30  *  - flush_icache_all() flush the entire instruction cache
  31  *  - flush_data_cache_page() flushes a page from the data cache
  32  */
  33 extern void (*flush_cache_all)(void);
  34 extern void (*__flush_cache_all)(void);
  35 extern void (*flush_cache_mm)(struct mm_struct *mm);
  36 extern void (*flush_cache_range)(struct vm_area_struct *vma,
  37         unsigned long start, unsigned long end);
  38 extern void (*flush_cache_page)(struct vm_area_struct *vma,
  39         unsigned long page);
  40 extern void flush_dcache_page(struct page *page);
  41 extern void (*flush_icache_page)(struct vm_area_struct *vma,
  42         struct page *page);
  43 extern void (*flush_icache_range)(unsigned long start, unsigned long end);
  44 #define flush_icache_user_range(vma, page, addr, len)   \
  45                                         flush_icache_page(vma, page)
  46
  47
  48 extern void (*flush_cache_sigtramp)(unsigned long addr);
  49 extern void (*flush_icache_all)(void);
  50 extern void (*flush_data_cache_page)(unsigned long addr);
  51
  52 /*
  53  * This flag is used to indicate that the page pointed to by a pte
  54  * is dirty and requires cleaning before returning it to the user.
  55  */
  56 #define PG_dcache_dirty                 PG_arch_1
  57
  58 #define Page_dcache_dirty(page)         \
  59         test_bit(PG_dcache_dirty, &(page)->flags)
  60 #define SetPageDcacheDirty(page)        \
  61         set_bit(PG_dcache_dirty, &(page)->flags)
  62 #define ClearPageDcacheDirty(page)      \
  63         clear_bit(PG_dcache_dirty, &(page)->flags)
  64
  65 #endif /* _ASM_CACHEFLUSH_H */