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                 if (!(drm_core_has_AGP(dev) && dev->agp)) {
  75                         DRM_ERROR("AGP is not enabled for memory type %u\n",
  76                                   (unsigned) type);
  77                         return -EINVAL;
  78                 }
  79                 man->io_offset = dev->agp->agp_info.aper_base;
  80                 man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
  81                 man->io_addr = NULL;
  82                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
  83                         _DRM_FLAG_MEMTYPE_CACHED |
  84                         _DRM_FLAG_NEEDS_IOREMAP;
  85                 break;
  86         case DRM_BO_MEM_PRIV0:
  87                 if (!(drm_core_has_AGP(dev) && dev->agp)) {
  88                         DRM_ERROR("AGP is not enabled for memory type %u\n",
  89                                   (unsigned) type);
  90                         return -EINVAL;
  91                 }
  92                 man->io_offset = dev->agp->agp_info.aper_base;
  93                 man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
  94                 man->io_addr = NULL;
  95                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
  96                         _DRM_FLAG_MEMTYPE_FIXED |
  97                         _DRM_FLAG_NEEDS_IOREMAP;
  98
  99                 break;
 100         default:
 101                 DRM_ERROR("Unsupported memory type %u\n", (unsigned) type);
 102                 return -EINVAL;
 103         }
 104         return 0;
 105 }
 106
 107 uint32_t i915_evict_flags(drm_device_t *dev, uint32_t type)
 108 {
 109         switch(type) {
 110         case DRM_BO_MEM_LOCAL:
 111         case DRM_BO_MEM_TT:
 112                 return DRM_BO_FLAG_MEM_LOCAL;
 113         default:
 114                 return DRM_BO_FLAG_MEM_TT;
 115         }
 116 }
 117
 118 void i915_emit_copy_blit(drm_device_t *dev,
 119                          uint32_t src_offset,
 120                          uint32_t dst_offset,
 121                          uint32_t pages,
 122                          int direction)
 123 {
 124         uint32_t cur_pages;
 125         uint32_t stride = PAGE_SIZE;
 126         drm_i915_private_t *dev_priv = dev->dev_private;
 127         RING_LOCALS;
 128
 129         if (!dev_priv)
 130                 return;
 131
 132         if (direction) {
 133                 stride = -stride;
 134                 src_offset += (pages - 1) << PAGE_SHIFT;
 135                 dst_offset += (pages - 1) << PAGE_SHIFT;
 136         }
 137
 138         while(pages > 0) {
 139                 cur_pages = pages;
 140                 if (cur_pages > 2048)
 141                         cur_pages = 2048;
 142                 pages -= cur_pages;
 143
 144                 BEGIN_LP_RING(8);
 145                 OUT_RING(XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 146                          XY_SRC_COPY_BLT_WRITE_RGB);
 147                 OUT_RING((stride & 0xffff) | ( 0xcc << 16) | (1 << 24) |
 148                          (1 << 25));
 149                 OUT_RING(0);
 150                 OUT_RING((cur_pages << 16) | (PAGE_SIZE >> 2));
 151                 OUT_RING(dst_offset);
 152                 OUT_RING(0);
 153                 OUT_RING(stride & 0xffff);
 154                 OUT_RING(src_offset);
 155                 ADVANCE_LP_RING();
 156                 dst_offset += (cur_pages << PAGE_SHIFT)*(direction ? -1 : 1);
 157                 src_offset += (cur_pages << PAGE_SHIFT)*(direction ? -1 : 1);
 158         }
 159         return;
 160 }