From f0ec5926da24157bada1ebe9789c8b2527b85182 Mon Sep 17 00:00:00 2001 From: Ruili Ji Date: Mon, 31 Mar 2025 20:55:09 -0400 Subject: [PATCH 3172/5403] amd/amdgpu: Implement VCN queue reset for vcn 4.0.3 Add function for vcn queue reset to make driver to do fine-grained reset instead of the whole gpu reset. Reviewed-by: Sonny Jiang Reviewed-by: Leo Liu Signed-off-by: Ruili Ji Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c | 32 +++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c index a1355a37cef7..139c83bd165e 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c @@ -1570,6 +1570,37 @@ static void vcn_v4_0_3_unified_ring_set_wptr(struct amdgpu_ring *ring) } } +static int vcn_v4_0_3_ring_reset(struct amdgpu_ring *ring, unsigned int vmid) +{ + int r = 0; + int vcn_inst; + struct amdgpu_device *adev = ring->adev; + struct amdgpu_vcn_inst *vinst = &adev->vcn.inst[ring->me]; + + if (amdgpu_sriov_vf(ring->adev)) + return -EOPNOTSUPP; + + if (!(adev->vcn.supported_reset & AMDGPU_RESET_TYPE_PER_QUEUE)) + return -EOPNOTSUPP; + + vcn_inst = GET_INST(VCN, ring->me); + r = amdgpu_dpm_reset_vcn(adev, 1 << vcn_inst); + + if (r) { + DRM_DEV_ERROR(adev->dev, "VCN reset fail : %d\n", r); + return r; + } + + /* This flag is not set for VF, assumed to be disabled always */ + if (RREG32_SOC15(VCN, GET_INST(VCN, 0), regVCN_RRMT_CNTL) & 0x100) + adev->vcn.caps |= AMDGPU_VCN_CAPS(RRMT_ENABLED); + vcn_v4_0_3_hw_init_inst(vinst); + vcn_v4_0_3_start_dpg_mode(vinst, adev->vcn.inst[ring->me].indirect_sram); + r = amdgpu_ring_test_helper(ring); + + return r; +} + static const struct amdgpu_ring_funcs vcn_v4_0_3_unified_ring_vm_funcs = { .type = AMDGPU_RING_TYPE_VCN_ENC, .align_mask = 0x3f, @@ -1598,6 +1629,7 @@ static const struct amdgpu_ring_funcs vcn_v4_0_3_unified_ring_vm_funcs = { .emit_wreg = vcn_v4_0_3_enc_ring_emit_wreg, .emit_reg_wait = vcn_v4_0_3_enc_ring_emit_reg_wait, .emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper, + .reset = vcn_v4_0_3_ring_reset, }; /** -- 2.54.0