renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-29 15:43:59 +08:00
Code

drm/amdgpu: limit visible vram if it's smaller than the BAR

Browse Source 
In some cases the amount of vram may be less than the BAR size,
if so, limit visible vram to the amount of actual vram, not the
BAR size.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-12-09 15:36:40 -05:00
parent b70f014d58
commit a1493cd575
2 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
View File

@ -370,6 +370,10 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev)
adev->mc.real_vram_size = RREG32(mmCONFIG_MEMSIZE) * 1024ULL * 1024ULL;
adev->mc.visible_vram_size = adev->mc.aper_size;
/* In case the PCI BAR is larger than the actual amount of vram */
if (adev->mc.visible_vram_size > adev->mc.real_vram_size)
adev->mc.visible_vram_size = adev->mc.real_vram_size;
/* unless the user had overridden it, set the gart
* size equal to the 1024 or vram, whichever is larger.
*/

4
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
View File

@ -476,6 +476,10 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
adev->mc.real_vram_size = RREG32(mmCONFIG_MEMSIZE) * 1024ULL * 1024ULL;
adev->mc.visible_vram_size = adev->mc.aper_size;
/* In case the PCI BAR is larger than the actual amount of vram */
if (adev->mc.visible_vram_size > adev->mc.real_vram_size)
adev->mc.visible_vram_size = adev->mc.real_vram_size;
/* unless the user had overridden it, set the gart
* size equal to the 1024 or vram, whichever is larger.
*/