linux-core/drm_bo_move.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
   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 OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 /*
  28  * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  29  */
  30
  31 #include "drmP.h"
  32
  33 int drm_bo_move_ttm(drm_device_t *dev,
  34                     drm_ttm_t *ttm,
  35                     int evict,
  36                     int no_wait,
  37                     drm_bo_mem_reg_t *old_mem,
  38                     drm_bo_mem_reg_t *new_mem)
  39 {
  40         uint32_t save_flags = old_mem->flags;
  41         uint32_t save_mask = old_mem->mask;
  42         int ret;
  43
  44         if (old_mem->mem_type == DRM_BO_MEM_TT) {
  45
  46                 if (evict)
  47                         drm_ttm_evict(ttm);
  48                 else
  49                         drm_ttm_unbind(ttm);
  50
  51                 mutex_lock(&dev->struct_mutex);
  52                 drm_mm_put_block(old_mem->mm_node);
  53                 mutex_unlock(&dev->struct_mutex);
  54                 save_flags |= DRM_BO_FLAG_CACHED;
  55
  56         } else {
  57
  58                 ret = drm_bind_ttm(ttm,
  59                                    new_mem->flags & DRM_BO_FLAG_BIND_CACHED,
  60                                    new_mem->mm_node->start);
  61                 if (ret)
  62                         return ret;
  63
  64                 if (!(new_mem->flags & DRM_BO_FLAG_BIND_CACHED)) {
  65                         save_flags &= ~DRM_BO_FLAG_CACHED;
  66                 }
  67
  68         }
  69
  70         *old_mem = *new_mem;
  71         new_mem->mm_node = NULL;
  72         old_mem->mask = save_mask;
  73         DRM_MASK_VAL(save_flags, new_mem->flags, DRM_BO_MASK_MEM);
  74         return 0;
  75 }