drm/amdgpu: Skip program SDMA0_SEM_WAIT_FAIL_TIMER_CNTL under SRIOV VF

[Why]
As SDMA0_SEM_WAIT_FAIL_TIMER_CNTL is a PF-only register,
L1 would block this register for VF access.

[How]
VF do not program it.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index fb31dc911cd71969139b89678d2d9618bb8f2e61..7ae572a08cb37e9b28860d3fce374848571c4904 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -560,7 +560,8 @@ static int sdma_v6_0_gfx_resume(struct amdgpu_device *adev)
        for (i = 0; i < adev->sdma.num_instances; i++) {
                ring = &adev->sdma.instance[i].ring;
 
-               WREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_SEM_WAIT_FAIL_TIMER_CNTL), 0);
+               if (!amdgpu_sriov_vf(adev))
+                       WREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_SEM_WAIT_FAIL_TIMER_CNTL), 0);
 
                /* Set ring buffer size in dwords */
                rb_bufsz = order_base_2(ring->ring_size / 4);