linux-core/i915_buffer.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., 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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  *
  27  **************************************************************************/
  28 /*
  29  * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  30  */
  31
  32 #include "drmP.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36
  37 drm_ttm_backend_t *i915_create_ttm_backend_entry(drm_device_t * dev)
  38 {
  39         return drm_agp_init_ttm(dev, NULL);
  40 }
  41
  42 int i915_fence_types(uint32_t buffer_flags, uint32_t * class, uint32_t * type)
  43 {
  44         *class = 0;
  45         if (buffer_flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE))
  46                 *type = 3;
  47         else
  48                 *type = 1;
  49         return 0;
  50 }
  51
  52 int i915_invalidate_caches(drm_device_t * dev, uint32_t flags)
  53 {
  54         /*
  55          * FIXME: Only emit once per batchbuffer submission.
  56          */
  57
  58         uint32_t flush_cmd = MI_NO_WRITE_FLUSH;
  59
  60         if (flags & DRM_BO_FLAG_READ)
  61                 flush_cmd |= MI_READ_FLUSH;
  62         if (flags & DRM_BO_FLAG_EXE)
  63                 flush_cmd |= MI_EXE_FLUSH;
  64
  65         return i915_emit_mi_flush(dev, flush_cmd);
  66 }
  67
  68 int i915_init_mem_type(drm_device_t *dev, uint32_t type,
  69                        drm_mem_type_manager_t *man)
  70 {
  71         switch(type) {
  72         case DRM_BO_MEM_LOCAL:
  73         case DRM_BO_MEM_TT:
  74                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
  75                         _DRM_FLAG_MEMTYPE_CACHED;
  76                 break;
  77         case DRM_BO_MEM_PRIV0:
  78                 if (!(drm_core_has_AGP(dev) && dev->agp)) {
  79                         DRM_ERROR("AGP is not enabled for memory type %u\n",
  80                                   (unsigned) type);
  81                         return -EINVAL;
  82                 }
  83                 man->io_offset = dev->agp->agp_info.aper_base;
  84                 man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
  85
  86                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
  87                         _DRM_FLAG_MEMTYPE_CACHED |
  88                         _DRM_FLAG_MEMTYPE_FIXED |
  89                         _DRM_FLAG_NEEDS_IOREMAP;
  90
  91                 man->io_addr = NULL;
  92                 break;
  93         default:
  94                 DRM_ERROR("Unsupported memory type %u\n", (unsigned) type);
  95                 return -EINVAL;
  96         }
  97         return 0;
  98 }