linux-core/via_buffer.c

   1 /**************************************************************************
   2  *
   3  * Copyright (c) 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 #include "via_drm.h"
  33 #include "via_drv.h"
  34
  35 drm_ttm_backend_t *via_create_ttm_backend_entry(drm_device_t * dev)
  36 {
  37         return drm_agp_init_ttm(dev);
  38 }
  39
  40 int via_fence_types(drm_buffer_object_t *bo, uint32_t * type)
  41 {
  42         *type = 3;
  43         return 0;
  44 }
  45
  46 int via_invalidate_caches(drm_device_t * dev, uint64_t flags)
  47 {
  48         /*
  49          * FIXME: Invalidate texture caches here.
  50          */
  51
  52         return 0;
  53 }
  54
  55
  56 static int via_vram_info(drm_device_t *dev,
  57                          unsigned long *offset,
  58                          unsigned long *size)
  59 {
  60         struct pci_dev *pdev = dev->pdev;
  61         unsigned long flags;
  62
  63         int ret = DRM_ERR(EINVAL);
  64         int i;
  65         for (i=0; i<6; ++i) {
  66                 flags = pci_resource_flags(pdev, i);
  67                 if ((flags & (IORESOURCE_MEM | IORESOURCE_PREFETCH)) ==
  68                     (IORESOURCE_MEM | IORESOURCE_PREFETCH)) {
  69                         ret = 0;
  70                         break;
  71                 }
  72         }
  73
  74         if (ret) {
  75                 DRM_ERROR("Could not find VRAM PCI resource\n");
  76                 return ret;
  77         }
  78
  79         *offset = pci_resource_start(pdev, i);
  80         *size = pci_resource_end(pdev, i) - *offset + 1;
  81         return 0;
  82 }
  83
  84 int via_init_mem_type(drm_device_t * dev, uint32_t type,
  85                        drm_mem_type_manager_t * man)
  86 {
  87         switch (type) {
  88         case DRM_BO_MEM_LOCAL:
  89                 /* System memory */
  90
  91                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
  92                         _DRM_FLAG_MEMTYPE_CACHED;
  93                 man->drm_bus_maptype = 0;
  94                 break;
  95
  96         case DRM_BO_MEM_TT:
  97                 /* Dynamic agpgart memory */
  98
  99                 if (!(drm_core_has_AGP(dev) && dev->agp)) {
 100                         DRM_ERROR("AGP is not enabled for memory type %u\n",
 101                                   (unsigned)type);
 102                         return -EINVAL;
 103                 }
 104                 man->io_offset = dev->agp->agp_info.aper_base;
 105                 man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
 106                 man->io_addr = NULL;
 107                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP;
 108
 109                 /* Only to get pte protection right. */
 110
 111                 man->drm_bus_maptype = _DRM_AGP;
 112                 break;
 113
 114         case DRM_BO_MEM_VRAM:
 115                 /* "On-card" video ram */
 116
 117                 man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP;
 118                 man->drm_bus_maptype = _DRM_FRAME_BUFFER;
 119                 man->io_addr = NULL;
 120                 return via_vram_info(dev, &man->io_offset, &man->io_size);
 121                 break;
 122
 123         case DRM_BO_MEM_PRIV0:
 124                 /* Pre-bound agpgart memory */
 125
 126                 if (!(drm_core_has_AGP(dev) && dev->agp)) {
 127                         DRM_ERROR("AGP is not enabled for memory type %u\n",
 128                                   (unsigned)type);
 129                         return -EINVAL;
 130                 }
 131                 man->io_offset = dev->agp->agp_info.aper_base;
 132                 man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
 133                 man->io_addr = NULL;
 134                 man->flags =  _DRM_FLAG_MEMTYPE_MAPPABLE |
 135                     _DRM_FLAG_MEMTYPE_FIXED | _DRM_FLAG_NEEDS_IOREMAP;
 136                 man->drm_bus_maptype = _DRM_AGP;
 137                 break;
 138
 139         default:
 140                 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
 141                 return -EINVAL;
 142         }
 143         return 0;
 144 }
 145
 146 uint32_t via_evict_mask(drm_buffer_object_t *bo)
 147 {
 148         switch (bo->mem.mem_type) {
 149         case DRM_BO_MEM_LOCAL:
 150         case DRM_BO_MEM_TT:
 151                 return DRM_BO_FLAG_MEM_LOCAL; /* Evict TT to local */
 152         case DRM_BO_MEM_PRIV0: /* Evict pre-bound AGP to TT */
 153                 return DRM_BO_MEM_TT;
 154         case DRM_BO_MEM_VRAM:
 155                 if (bo->mem.num_pages > 128)
 156                         return DRM_BO_MEM_TT;
 157                 else
 158                         return DRM_BO_MEM_LOCAL;
 159         default:
 160                 return DRM_BO_MEM_LOCAL;
 161         }
 162 }