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drm/amdgpu: disable concurrent flushes for Navi10 v2 

Navi10 have a bug in the SDMA which can theoretically cause memory
corruption with concurrent VMID flushes

v2: explicitely check Navi10

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>
alistair/sunxi64-5.4-dsi
Christian König 2019-02-07 12:10:29 +01:00 committed by Alex Deucher
parent 437298b833
commit a2bd77bbde
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
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@ -364,8 +364,11 @@ static int amdgpu_vmid_grab_used(struct amdgpu_vm *vm,
if (updates && (!flushed || dma_fence_is_later(updates, flushed)))
needs_flush = true;
/* Concurrent flushes are only possible starting with Vega10 */
if (adev->asic_type < CHIP_VEGA10 && needs_flush)
/* Concurrent flushes are only possible starting with Vega10 and
* are broken on Navi10 and Navi14.
*/
if (needs_flush && (adev->asic_type < CHIP_VEGA10 ||
adev->asic_type == CHIP_NAVI10))
continue;
/* Good, we can use this VMID. Remember this submission as