include/asm-nios2nommu/cacheflush.h

   1 #ifndef _NIOS2NOMMU_CACHEFLUSH_H
   2 #define _NIOS2NOMMU_CACHEFLUSH_H
   3
   4 /*
   5  * Ported from m68knommu.
   6  *
   7  * (C) Copyright 2003, Microtronix Datacom Ltd.
   8  * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
   9  *
  10  * All rights reserved.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  20  * NON INFRINGEMENT.  See the GNU General Public License for more
  21  * details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  *
  27  */
  28 #include <linux/mm.h>
  29
  30 extern void cache_push (unsigned long vaddr, int len);
  31 extern void dcache_push (unsigned long vaddr, int len);
  32 extern void icache_push (unsigned long vaddr, int len);
  33 extern void cache_push_all (void);
  34 extern void cache_clear (unsigned long paddr, int len);
  35
  36 #define flush_cache_all()                       __flush_cache_all()
  37 #define flush_cache_mm(mm)                      do { } while (0)
  38 #define flush_cache_range(vma, start, end)      cache_push(start, end - start)
  39 #define flush_cache_page(vma, vmaddr)           do { } while (0)
  40 #define flush_dcache_range(start,end)           dcache_push(start, end - start)
  41 #define flush_dcache_page(page)                 do { } while (0)
  42 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  43 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  44 #define flush_icache_range(start,end)           cache_push(start, end - start)
  45 #define flush_icache_page(vma,pg)               do { } while (0)
  46 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  47
  48 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  49         memcpy(dst, src, len)
  50 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  51         memcpy(dst, src, len)
  52
  53
  54 extern inline void __flush_cache_all(void)
  55 {
  56         cache_push_all();
  57 }
  58
  59 #endif /* _NIOS2NOMMU_CACHEFLUSH_H */