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drm/amdgpu/gmc9: remove dummy read workaround for newer chips

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Aldebaran has a hw fix so no longer requires the workaround.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2021-04-16 17:35:58 -04:00
parent 5c88e3b86a
commit 7845d80dda
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
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@ -574,7 +574,8 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev,
* be updated to avoid reading an incorrect value due to
* the new fast GRBM interface.
*/
if (entry->vmid_src == AMDGPU_GFXHUB_0)
if ((entry->vmid_src == AMDGPU_GFXHUB_0) &&
(adev->asic_type < CHIP_ALDEBARAN))
RREG32(hub->vm_l2_pro_fault_status);
status = RREG32(hub->vm_l2_pro_fault_status);
@ -802,7 +803,8 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
* be cleared to avoid a false ACK due to the new fast
* GRBM interface.
*/
if (vmhub == AMDGPU_GFXHUB_0)
if ((vmhub == AMDGPU_GFXHUB_0) &&
(adev->asic_type < CHIP_ALDEBARAN))
RREG32_NO_KIQ(hub->vm_inv_eng0_req +
hub->eng_distance * eng);