LXR linux/arch/nios2/include/asm/cacheflush.h

   1/*
   2 * Copyright (C) 2003 Microtronix Datacom Ltd.
   3 * Copyright (C) 2000-2002 Greg Ungerer <gerg@snapgear.com>
   4 *
   5 * This file is subject to the terms and conditions of the GNU General Public
   6 * License. See the file "COPYING" in the main directory of this archive
   7 * for more details.
   8 */
   9
  10#ifndef _ASM_NIOS2_CACHEFLUSH_H
  11#define _ASM_NIOS2_CACHEFLUSH_H
  12
  13#include <linux/mm_types.h>
  14
  15/*
  16 * This flag is used to indicate that the page pointed to by a pte is clean
  17 * and does not require cleaning before returning it to the user.
  18 */
  19#define PG_dcache_clean PG_arch_1
  20
  21struct mm_struct;
  22
  23extern void flush_cache_all(void);
  24extern void flush_cache_mm(struct mm_struct *mm);
  25extern void flush_cache_dup_mm(struct mm_struct *mm);
  26extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
  27        unsigned long end);
  28extern void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
  29        unsigned long pfn);
  30#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  31extern void flush_dcache_page(struct page *page);
  32
  33extern void flush_icache_range(unsigned long start, unsigned long end);
  34extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
  35
  36#define flush_cache_vmap(start, end)            flush_dcache_range(start, end)
  37#define flush_cache_vunmap(start, end)          flush_dcache_range(start, end)
  38
  39extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
  40                                unsigned long user_vaddr,
  41                                void *dst, void *src, int len);
  42extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
  43                                unsigned long user_vaddr,
  44                                void *dst, void *src, int len);
  45
  46extern void flush_dcache_range(unsigned long start, unsigned long end);
  47extern void invalidate_dcache_range(unsigned long start, unsigned long end);
  48
  49#define flush_dcache_mmap_lock(mapping)         xa_lock_irq(&mapping->i_pages)
  50#define flush_dcache_mmap_unlock(mapping)       xa_unlock_irq(&mapping->i_pages)
  51
  52#endif /* _ASM_NIOS2_CACHEFLUSH_H */
  53