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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>
This commit is contained in:
Yifan Zha 2022-08-17 18:44:14 +08:00 committed by Alex Deucher
parent 40ad3e545b
commit 08c8442c4a
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
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@ -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);