arch/.unmaintained/m68k-emul/cache.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Flush Caches
   6     Lang: english
   7 */
   8
   9 #include <errno.h>
  10 #include <asm/cachectl.h>
  11 /* GNU libc 2 has this included in <sys/syscall.h>, but libc5 doesn't :-( */
  12 #include <asm/unistd.h>
  13 static inline _syscall4(int,cacheflush,unsigned long,addr,int,scope,int,cache,unsigned long,len)
  14
  15 /******************************************************************************
  16
  17     NAME */
  18 #include <proto/exec.h>
  19 #include <exec/execbase.h>
  20
  21         AROS_LH3(void, CacheClearE,
  22
  23 /*  SYNOPSIS */
  24         AROS_LHA(APTR,  address, A0),
  25         AROS_LHA(ULONG, length,  D0),
  26         AROS_LHA(ULONG, caches,  D1),
  27
  28 /*  LOCATION */
  29         struct ExecBase *, SysBase, 107, Exec)
  30
  31 /*  FUNCTION
  32
  33     INPUTS
  34
  35     RESULT
  36
  37     NOTES
  38
  39     EXAMPLE
  40
  41     BUGS
  42
  43     SEE ALSO
  44
  45     INTERNALS
  46
  47     HISTORY
  48
  49 ******************************************************************************/
  50 {
  51     int scope, cpucache = 0;
  52
  53     if (caches & CACRF_ClearD)
  54         cpucache |= FLUSH_CACHE_DATA;
  55
  56     if (caches & CACRF_ClearI)
  57         cpucache |= FLUSH_CACHE_INSN;
  58
  59     if (length == (ULONG)-1)
  60         scope = FLUSH_SCOPE_ALL;
  61     else
  62         scope = FLUSH_SCOPE_LINE;
  63
  64     (void) cacheflush((unsigned long)address, scope, cpucache, length);
  65 } /* CacheClearE */
  66
  67 /******************************************************************************
  68
  69     NAME */
  70 #include <proto/exec.h>
  71
  72         AROS_LH0(void, CacheClearU,
  73
  74 /*  LOCATION */
  75         struct ExecBase *, SysBase, 106, Exec)
  76
  77 /*  FUNCTION
  78
  79     INPUTS
  80
  81     RESULT
  82
  83     NOTES
  84
  85     EXAMPLE
  86
  87     BUGS
  88
  89     SEE ALSO
  90
  91     INTERNALS
  92
  93     HISTORY
  94
  95 ******************************************************************************/
  96 {
  97     (void) cacheflush(0, FLUSH_SCOPE_ALL, FLUSH_CACHE_BOTH, 0);
  98 } /* CacheClearU */
  99
 100 /******************************************************************************
 101
 102     NAME */
 103 #include <proto/exec.h>
 104
 105         AROS_LH0(void, CacheControl,
 106
 107 /*  LOCATION */
 108         struct ExecBase *, SysBase, 108, Exec)
 109
 110 /*  FUNCTION
 111
 112     INPUTS
 113
 114     RESULT
 115
 116     NOTES
 117
 118     EXAMPLE
 119
 120     BUGS
 121
 122     SEE ALSO
 123
 124     INTERNALS
 125
 126     HISTORY
 127
 128 ******************************************************************************/
 129 {
 130     return;
 131 } /* CacheControl */
 132
 133 /******************************************************************************
 134
 135     NAME */
 136 #include <proto/exec.h>
 137
 138         AROS_LH0(void, CachePostDMA,
 139
 140 /*  LOCATION */
 141         struct ExecBase *, SysBase, 128, Exec)
 142
 143 /*  FUNCTION
 144
 145     INPUTS
 146
 147     RESULT
 148
 149     NOTES
 150
 151     EXAMPLE
 152
 153     BUGS
 154
 155     SEE ALSO
 156
 157     INTERNALS
 158
 159     HISTORY
 160
 161 ******************************************************************************/
 162 {
 163     return;
 164 } /* CachePostDMA */
 165
 166 /******************************************************************************
 167
 168     NAME */
 169 #include <proto/exec.h>
 170
 171         AROS_LH0(void, CachePreDMA,
 172
 173 /*  LOCATION */
 174         struct ExecBase *, SysBase, 127, Exec)
 175
 176 /*  FUNCTION
 177
 178     INPUTS
 179
 180     RESULT
 181
 182     NOTES
 183
 184     EXAMPLE
 185
 186     BUGS
 187
 188     SEE ALSO
 189
 190     INTERNALS
 191
 192     HISTORY
 193
 194 ******************************************************************************/
 195 {
 196     return;
 197 } /* CachePreDMA */
 198