From e1a29b28e70457549149d3b2c82e4333d68ac49d Mon Sep 17 00:00:00 2001 From: Yifan Zha Date: Tue, 25 Oct 2022 14:46:11 +0800 Subject: [PATCH] drm/amdgpu: Skip access SDMA0_F32_CNTL in sdma_v6_0_enable under SRIOV [Why] SDMA0_F32_CNTL is a PF_only regitser which will be blocked by L1. RLCG will not program the register as well. [How] Skip to program SDMA0_F32_CNTL under SRIOV VF. Signed-off-by: Yifan Zha Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c index d9ae69be5ea4a..049c26a45d851 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c @@ -455,6 +455,9 @@ static void sdma_v6_0_enable(struct amdgpu_device *adev, bool enable) sdma_v6_0_rlc_stop(adev); } + if (amdgpu_sriov_vf(adev)) + return; + for (i = 0; i < adev->sdma.num_instances; i++) { f32_cntl = RREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_F32_CNTL)); f32_cntl = REG_SET_FIELD(f32_cntl, SDMA0_F32_CNTL, HALT, enable ? 0 : 1); -- 2.30.2