src/gallium/drivers/i965simple/brw_flush.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Author:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32
  33 #include "pipe/p_defines.h"
  34 #include "brw_context.h"
  35 #include "brw_defines.h"
  36 #include "brw_batch.h"
  37
  38
  39 static void brw_flush( struct pipe_context *pipe,
  40                        unsigned flags,
  41                        struct pipe_fence_handle **fence )
  42 {
  43    struct brw_context *brw = brw_context(pipe);
  44
  45    /* Do we need to emit an MI_FLUSH command to flush the hardware
  46     * caches?
  47     */
  48    if (flags & (PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE)) {
  49       struct brw_mi_flush flush;
  50
  51       memset(&flush, 0, sizeof(flush));
  52       flush.opcode = CMD_MI_FLUSH;
  53
  54       if (!(flags & PIPE_FLUSH_RENDER_CACHE))
  55          flush.flags |= BRW_INHIBIT_FLUSH_RENDER_CACHE;
  56
  57       if (flags & PIPE_FLUSH_TEXTURE_CACHE)
  58          flush.flags |= BRW_FLUSH_READ_CACHE;
  59
  60       BRW_BATCH_STRUCT(brw, &flush);
  61    }
  62
  63    /* If there are no flags, just flush pending commands to hardware:
  64     */
  65    FLUSH_BATCH( fence );
  66 }
  67
  68
  69
  70 void brw_init_flush_functions( struct brw_context *brw )
  71 {
  72    brw->pipe.flush = brw_flush;
  73 }