include/asm-sh/cpu-sh2/cacheflush.h

   1 /*
   2  * include/asm-sh/cpu-sh2/cacheflush.h
   3  *
   4  * Copyright (C) 2003 Paul Mundt
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10 #ifndef __ASM_CPU_SH2_CACHEFLUSH_H
  11 #define __ASM_CPU_SH2_CACHEFLUSH_H
  12
  13 /*
  14  * Cache flushing:
  15  *
  16  *  - flush_cache_all() flushes entire cache
  17  *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
  18  *  - flush_cache_dup mm(mm) handles cache flushing when forking
  19  *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
  20  *  - flush_cache_range(vma, start, end) flushes a range of pages
  21  *
  22  *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
  23  *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
  24  *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
  25  *
  26  *  Caches are indexed (effectively) by physical address on SH-2, so
  27  *  we don't need them.
  28  */
  29 #define flush_cache_all()                       do { } while (0)
  30 #define flush_cache_mm(mm)                      do { } while (0)
  31 #define flush_cache_dup_mm(mm)                  do { } while (0)
  32 #define flush_cache_range(vma, start, end)      do { } while (0)
  33 #define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
  34 #define flush_dcache_page(page)                 do { } while (0)
  35 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  36 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  37 #define flush_icache_range(start, end)          do { } while (0)
  38 #define flush_icache_page(vma,pg)               do { } while (0)
  39 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  40 #define flush_cache_sigtramp(vaddr)             do { } while (0)
  41
  42 #define p3_cache_init()                         do { } while (0)
  43 #endif /* __ASM_CPU_SH2_CACHEFLUSH_H */
  44