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drm/ttm: restructure to allow driver to plug in alternate memory manager

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Nouveau will need this on GeForce 8 and up to account for the GPU
reordering physical VRAM for some memory types.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Thomas Hellström <thellstrom@vmware.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs
2010-08-05 10:48:18 +10:00
parent 42311ff90d
commit d961db75ce
18 changed files with 229 additions and 116 deletions
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3
drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
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@@ -147,6 +147,7 @@ int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
break;
case TTM_PL_VRAM:
/* "On-card" video ram */
man->func = &ttm_bo_manager_func;
man->gpu_offset = 0;
man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
man->available_caching = TTM_PL_MASK_CACHING;
@@ -203,7 +204,7 @@ static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg
/* System memory */
return 0;
case TTM_PL_VRAM:
mem->bus.offset = mem->mm_node->start << PAGE_SHIFT;
mem->bus.offset = mem->start << PAGE_SHIFT;
mem->bus.base = dev_priv->vram_start;
mem->bus.is_iomem = true;
break;