Commit 7845d80d authored by Alex Deucher's avatar Alex Deucher
Browse files

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



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

Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5c88e3b8

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

+4 −2
Original line number Diff line number Diff line
@@ -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);