arch/.unmaintained/dummy/cachepostdma.c

   1 |******************************************************************************
   2 |
   3 |   NAME
   4 |
   5 |       __AROS_LH3(void, CachePostDMA,
   6 |
   7 |   SYNOPSIS
   8 |       __AROS_LA(APTR,    address, A0),
   9 |       __AROS_LA(ULONG *, length,  A1),
  10 |       __AROS_LA(ULONG,   flags,  D0),
  11 |
  12 |   LOCATION
  13 |       struct ExecBase *, SysBase, 128, Exec)
  14 |
  15 |   FUNCTION
  16 |       Do everything necessary to make CPU caches aware that a DMA has
  17 |       happened.
  18 |
  19 |   INPUTS
  20 |       address - Virtual address of memory affected by the DMA
  21 |       *length - Number of bytes affected
  22 |       flags   - DMA_NoModify    - Indicate that the memory didn't change.
  23 |                 DMA_ReadFromRAM - Indicate that the DMA goes from RAM
  24 |                                   to the device. Set this bit in bot calls.
  25 |
  26 |   RESULT
  27 |
  28 |   NOTES
  29 |       DMA must follow a call to CachePreDMA() and must be followed
  30 |       by a call to CachePostDMA().
  31 |
  32 |   EXAMPLE
  33 |
  34 |   BUGS
  35 |
  36 |   SEE ALSO
  37 |       CachePreDMA()
  38 |
  39 |   INTERNALS
  40 |
  41 |   HISTORY
  42 |
  43 |******************************************************************************
  44
  45         | Simple 68000s have no chaches
  46         .globl  _Exec_CachePostDMA
  47 _Exec_CachePostDMA:
  48         rts
  49