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drm/amdgpu: fix start calculation in amdgpu_vram_mgr_new

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We still need to calculate a virtual start address for the resource to
aid checking of it is visible or not. Only matters on small BAR systems,
but better save than sorry.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510113649.879821-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-05-10 12:52:05 +02:00
parent 047de3f17a
commit 5e3f1e7729
1 changed files with 14 additions and 8 deletions
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22
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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@ -496,17 +496,23 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
list_splice_tail(trim_list, &vres->blocks);
}
list_for_each_entry(block, &vres->blocks, link)
vres->base.start = 0;
list_for_each_entry(block, &vres->blocks, link) {
unsigned long start;
start = amdgpu_vram_mgr_block_start(block) +
amdgpu_vram_mgr_block_size(block);
start >>= PAGE_SHIFT;
if (start > vres->base.num_pages)
start -= vres->base.num_pages;
else
start = 0;
vres->base.start = max(vres->base.start, start);
vis_usage += amdgpu_vram_mgr_vis_size(adev, block);
block = amdgpu_vram_mgr_first_block(&vres->blocks);
if (!block) {
r = -EINVAL;
goto error_fini;
}
vres->base.start = amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT;
if (amdgpu_is_vram_mgr_blocks_contiguous(&vres->blocks))
vres->base.placement |= TTM_PL_FLAG_CONTIGUOUS;