From c8466cc0d2a419e7659bff5161440741cb96ab1e Mon Sep 17 00:00:00 2001 From: Jack Zhang Date: Mon, 29 Jun 2020 10:06:49 +0800 Subject: drm/amd/sriov skip vcn powergating and dec_ring_test 1.Skip decode_ring test in VF, because VCN in SRIOV does not support direct register read/write. 2.Skip powergating configuration in hw fini because VCN3.0 SRIOV doesn't support powergating. V2: delete unneccessary white lines and refine implementation. Signed-off-by: Jack Zhang Reviewed-by: Leo Liu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 ++++ drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 21 ++++++++++++++++----- 2 files changed, 20 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c index 15ff30c53e24..92a55e40bc48 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c @@ -421,6 +421,10 @@ int amdgpu_vcn_dec_ring_test_ring(struct amdgpu_ring *ring) unsigned i; int r; + /* VCN in SRIOV does not support direct register read/write */ + if (amdgpu_sriov_vf(adev)) + return 0; + WREG32(adev->vcn.inst[ring->me].external.scratch9, 0xCAFEDEAD); r = amdgpu_ring_alloc(ring, 3); if (r) diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c index 0a0ca10bf55b..910a4a32ff78 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c @@ -354,11 +354,13 @@ static int vcn_v3_0_hw_fini(void *handle) ring = &adev->vcn.inst[i].ring_dec; - if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) || - (adev->vcn.cur_state != AMD_PG_STATE_GATE && - RREG32_SOC15(VCN, i, mmUVD_STATUS))) - vcn_v3_0_set_powergating_state(adev, AMD_PG_STATE_GATE); - + if (!amdgpu_sriov_vf(adev)) { + if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) || + (adev->vcn.cur_state != AMD_PG_STATE_GATE && + RREG32_SOC15(VCN, i, mmUVD_STATUS))) { + vcn_v3_0_set_powergating_state(adev, AMD_PG_STATE_GATE); + } + } ring->sched.ready = false; for (j = 0; j < adev->vcn.num_enc_rings; ++j) { @@ -1861,6 +1863,15 @@ static int vcn_v3_0_set_powergating_state(void *handle, struct amdgpu_device *adev = (struct amdgpu_device *)handle; int ret; + /* for SRIOV, guest should not control VCN Power-gating + * MMSCH FW should control Power-gating and clock-gating + * guest should avoid touching CGC and PG + */ + if (amdgpu_sriov_vf(adev)) { + adev->vcn.cur_state = AMD_PG_STATE_UNGATE; + return 0; + } + if(state == adev->vcn.cur_state) return 0; -- cgit v1.2.3