src/gallium/drivers/i915/i915_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 "draw/draw_context.h"
  35 #include "i915_context.h"
  36 #include "i915_reg.h"
  37 #include "i915_batch.h"
  38 #include "i915_debug.h"
  39
  40
  41 static void i915_flush( struct pipe_context *pipe,
  42                         unsigned flags,
  43                         struct pipe_fence_handle **fence )
  44 {
  45    struct i915_context *i915 = i915_context(pipe);
  46
  47    draw_flush(i915->draw);
  48
  49 #if 0
  50    /* Do we need to emit an MI_FLUSH command to flush the hardware
  51     * caches?
  52     */
  53    if (flags & (PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE)) {
  54       unsigned flush = MI_FLUSH;
  55
  56       if (!(flags & PIPE_FLUSH_RENDER_CACHE))
  57          flush |= INHIBIT_FLUSH_RENDER_CACHE;
  58
  59       if (flags & PIPE_FLUSH_TEXTURE_CACHE)
  60          flush |= FLUSH_MAP_CACHE;
  61
  62       if (!BEGIN_BATCH(1, 0)) {
  63          FLUSH_BATCH(NULL);
  64          assert(BEGIN_BATCH(1, 0));
  65       }
  66       OUT_BATCH( flush );
  67    }
  68 #endif
  69
  70    if (i915->batch->map == i915->batch->ptr) {
  71       return;
  72    }
  73
  74    /* If there are no flags, just flush pending commands to hardware:
  75     */
  76    FLUSH_BATCH(fence);
  77    i915->vbo_flushed = 1;
  78
  79    I915_DBG(DBG_FLUSH, "%s: #####\n", __FUNCTION__);
  80 }
  81
  82 void i915_init_flush_functions( struct i915_context *i915 )
  83 {
  84    i915->base.flush = i915_flush;
  85 }