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
  21 struct mm_struct;
  22
  23 extern void flush_cache_all(void);
  24 extern void flush_cache_mm(struct mm_struct *mm);
  25 extern void flush_cache_dup_mm(struct mm_struct *mm);
  26 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
  27         unsigned long end);
  28 extern void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
  29         unsigned long pfn);
  30 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  31 extern void flush_dcache_page(struct page *page);
  32
  33 extern void flush_icache_range(unsigned long start, unsigned long end);
  34 extern 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
  39 extern 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);
  42 extern 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
  46 extern void flush_dcache_range(unsigned long start, unsigned long end);
  47 extern void invalidate_dcache_range(unsigned long start, unsigned long end);
  48
  49 #define flush_dcache_mmap_lock(mapping) \
  50         spin_lock_irq(&(mapping)->tree_lock)
  51 #define flush_dcache_mmap_unlock(mapping) \
  52         spin_unlock_irq(&(mapping)->tree_lock)
  53
  54 #endif /* _ASM_NIOS2_CACHEFLUSH_H */