arch/m68k/include/asm/cacheflush_no.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 ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  16 #define flush_dcache_page(page)                 do { } while (0)
  17 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  18 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  19 #define flush_icache_range(start,len)           __flush_cache_all()
  20 #define flush_icache_page(vma,pg)               do { } while (0)
  21 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  22 #define flush_cache_vmap(start, end)            do { } while (0)
  23 #define flush_cache_vunmap(start, end)          do { } while (0)
  24
  25 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  26         memcpy(dst, src, len)
  27 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  28         memcpy(dst, src, len)
  29
  30 static inline void __flush_cache_all(void)
  31 {
  32 #if defined(CONFIG_M5407) || defined(CONFIG_M548x)
  33         /*
  34          *      Use cpushl to push and invalidate all cache lines.
  35          *      Gas doesn't seem to know how to generate the ColdFire
  36          *      cpushl instruction... Oh well, bit stuff it for now.
  37          */
  38         __asm__ __volatile__ (
  39                 "nop\n\t"
  40                 "clrl   %%d0\n\t"
  41                 "1:\n\t"
  42                 "movel  %%d0,%%a0\n\t"
  43                 "2:\n\t"
  44                 ".word  0xf468\n\t"
  45                 "addl   #0x10,%%a0\n\t"
  46                 "cmpl   #0x00000800,%%a0\n\t"
  47                 "blt    2b\n\t"
  48                 "addql  #1,%%d0\n\t"
  49                 "cmpil  #4,%%d0\n\t"
  50                 "bne    1b\n\t"
  51                 "movel  #0xb6088500,%%d0\n\t"
  52                 "movec  %%d0,%%CACR\n\t"
  53                 : : : "d0", "a0" );
  54 #endif /* CONFIG_M5407 */
  55 #if defined(CONFIG_M523x) || defined(CONFIG_M527x)
  56         __asm__ __volatile__ (
  57                 "movel  #0x81400100, %%d0\n\t"
  58                 "movec  %%d0, %%CACR\n\t"
  59                 "nop\n\t"
  60                 : : : "d0" );
  61 #endif /* CONFIG_M523x || CONFIG_M527x */
  62 #if defined(CONFIG_M528x)
  63         __asm__ __volatile__ (
  64                 "movel  #0x81000200, %%d0\n\t"
  65                 "movec  %%d0, %%CACR\n\t"
  66                 "nop\n\t"
  67                 : : : "d0" );
  68 #endif /* CONFIG_M528x */
  69 #if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
  70         __asm__ __volatile__ (
  71                 "movel  #0x81000100, %%d0\n\t"
  72                 "movec  %%d0, %%CACR\n\t"
  73                 "nop\n\t"
  74                 : : : "d0" );
  75 #endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
  76 #ifdef CONFIG_M5249
  77         __asm__ __volatile__ (
  78                 "movel  #0xa1000200, %%d0\n\t"
  79                 "movec  %%d0, %%CACR\n\t"
  80                 "nop\n\t"
  81                 : : : "d0" );
  82 #endif /* CONFIG_M5249 */
  83 #ifdef CONFIG_M532x
  84         __asm__ __volatile__ (
  85                 "movel  #0x81000200, %%d0\n\t"
  86                 "movec  %%d0, %%CACR\n\t"
  87                 "nop\n\t"
  88                 : : : "d0" );
  89 #endif /* CONFIG_M532x */
  90 }
  91
  92 #endif /* _M68KNOMMU_CACHEFLUSH_H */