arch/m68knommu/include/asm/cacheflush.h

   1 #ifndef _M68KNOMMU_CACHEFLUSH_H
   2 #define _M68KNOMMU_CACHEFLUSH_H
   3
   4 /*
   5  * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
   6  */
   7 #include <linux/mm.h>
   8
   9 #define flush_cache_all()                       __flush_cache_all()
  10 #define flush_cache_mm(mm)                      do { } while (0)
  11 #define flush_cache_dup_mm(mm)                  do { } while (0)
  12 #define flush_cache_range(vma, start, end)      __flush_cache_all()
  13 #define flush_cache_page(vma, vmaddr)           do { } while (0)
  14 #define flush_dcache_range(start,len)           __flush_cache_all()
  15 #define flush_dcache_page(page)                 do { } while (0)
  16 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  17 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  18 #define flush_icache_range(start,len)           __flush_cache_all()
  19 #define flush_icache_page(vma,pg)               do { } while (0)
  20 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  21 #define flush_cache_vmap(start, end)            do { } while (0)
  22 #define flush_cache_vunmap(start, end)          do { } while (0)
  23
  24 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  25         memcpy(dst, src, len)
  26 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  27         memcpy(dst, src, len)
  28
  29 static inline void __flush_cache_all(void)
  30 {
  31 #ifdef CONFIG_M5407
  32         /*
  33          *      Use cpushl to push and invalidate all cache lines.
  34          *      Gas doesn't seem to know how to generate the ColdFire
  35          *      cpushl instruction... Oh well, bit stuff it for now.
  36          */
  37         __asm__ __volatile__ (
  38                 "nop\n\t"
  39                 "clrl   %%d0\n\t"
  40                 "1:\n\t"
  41                 "movel  %%d0,%%a0\n\t"
  42                 "2:\n\t"
  43                 ".word  0xf468\n\t"
  44                 "addl   #0x10,%%a0\n\t"
  45                 "cmpl   #0x00000800,%%a0\n\t"
  46                 "blt    2b\n\t"
  47                 "addql  #1,%%d0\n\t"
  48                 "cmpil  #4,%%d0\n\t"
  49                 "bne    1b\n\t"
  50                 "movel  #0xb6088500,%%d0\n\t"
  51                 "movec  %%d0,%%CACR\n\t"
  52                 : : : "d0", "a0" );
  53 #endif /* CONFIG_M5407 */
  54 #if defined(CONFIG_M527x) || defined(CONFIG_M528x)
  55         __asm__ __volatile__ (
  56                 "movel  #0x81000200, %%d0\n\t"
  57                 "movec  %%d0, %%CACR\n\t"
  58                 "nop\n\t"
  59                 : : : "d0" );
  60 #endif /* CONFIG_M527x || CONFIG_M528x */
  61 #if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
  62         __asm__ __volatile__ (
  63                 "movel  #0x81000100, %%d0\n\t"
  64                 "movec  %%d0, %%CACR\n\t"
  65                 "nop\n\t"
  66                 : : : "d0" );
  67 #endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
  68 #ifdef CONFIG_M5249
  69         __asm__ __volatile__ (
  70                 "movel  #0xa1000200, %%d0\n\t"
  71                 "movec  %%d0, %%CACR\n\t"
  72                 "nop\n\t"
  73                 : : : "d0" );
  74 #endif /* CONFIG_M5249 */
  75 #ifdef CONFIG_M532x
  76         __asm__ __volatile__ (
  77                 "movel  #0x81000200, %%d0\n\t"
  78                 "movec  %%d0, %%CACR\n\t"
  79                 "nop\n\t"
  80                 : : : "d0" );
  81 #endif /* CONFIG_M532x */
  82 }
  83
  84 #endif /* _M68KNOMMU_CACHEFLUSH_H */