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| author | Christian König <christian.koenig@amd.com> | 2017-11-16 20:12:51 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-06 12:47:58 -0500 |
| commit | b98f1b9e5e71b636036cc6c0e1a3b428acd216cb (patch) | |
| tree | 2122f9e13ad117c9939ac61e067846d4fb59f9f3 /drivers | |
| parent | 3d647c8f930190f728c997c3ac3d987f992420ed (diff) | |
| download | linux-stable-b98f1b9e5e71b636036cc6c0e1a3b428acd216cb.tar.gz linux-stable-b98f1b9e5e71b636036cc6c0e1a3b428acd216cb.tar.bz2 linux-stable-b98f1b9e5e71b636036cc6c0e1a3b428acd216cb.zip | |
drm/amdgpu: align GTT start to 4GB v2
For VCE to work properly the start of the GTT space must be aligned to a
4GB boundary.
v2: add comment why we do this
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index a81743d06bb0..a43d096ebb52 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -622,7 +622,10 @@ void amdgpu_gart_location(struct amdgpu_device *adev, struct amdgpu_mc *mc) dev_warn(adev->dev, "limiting GTT\n"); mc->gart_size = size_af; } - mc->gart_start = mc->vram_end + 1; + /* VCE doesn't like it when BOs cross a 4GB segment, so align + * the GART base on a 4GB boundary as well. + */ + mc->gart_start = ALIGN(mc->vram_end + 1, 0x100000000ULL); } mc->gart_end = mc->gart_start + mc->gart_size - 1; dev_info(adev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n", |