diff options
| author | James Zhu <James.Zhu@amd.com> | 2020-02-19 01:46:29 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-01 21:44:45 +0300 |
| commit | ad9469fb5b3ce2a004e95637ff4387b47d853713 (patch) | |
| tree | 62b0886fa1072163560287632e6708fe114e214c /drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | |
| parent | ef563ff403404ef2f234abe79bdd9f04ab6481c9 (diff) | |
| download | linux-ad9469fb5b3ce2a004e95637ff4387b47d853713.tar.xz | |
drm/amdgpu/vcn2.5: stall DPG when WPTR/RPTR reset
Add vcn dpg harware synchronization to fix race condition
issue between vcn driver and hardware.
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c index 22540265aee5..dcb884ab0c71 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c @@ -846,6 +846,12 @@ static int vcn_v2_5_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, boo tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1); WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_CNTL, tmp); + /* Stall DPG before WPTR/RPTR reset */ + WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), + UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK, + ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); + fw_shared->multi_queue.decode_queue_mode |= fw_queue_ring_reset; + /* set the write pointer delay */ WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR_CNTL, 0); @@ -868,6 +874,10 @@ static int vcn_v2_5_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, boo WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr)); + /* Unstall DPG */ + WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), + 0, ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); + return 0; } @@ -1380,8 +1390,14 @@ static int vcn_v2_5_pause_dpg_mode(struct amdgpu_device *adev, UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK, UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK, ret_code); + /* Stall DPG before WPTR/RPTR reset */ + WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), + UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK, + ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); + /* Restore */ ring = &adev->vcn.inst[inst_idx].ring_enc[0]; + ring->wptr = 0; WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_LO, ring->gpu_addr); WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr)); WREG32_SOC15(UVD, inst_idx, mmUVD_RB_SIZE, ring->ring_size / 4); @@ -1389,6 +1405,7 @@ static int vcn_v2_5_pause_dpg_mode(struct amdgpu_device *adev, WREG32_SOC15(UVD, inst_idx, mmUVD_RB_WPTR, lower_32_bits(ring->wptr)); ring = &adev->vcn.inst[inst_idx].ring_enc[1]; + ring->wptr = 0; WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_LO2, ring->gpu_addr); WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr)); WREG32_SOC15(UVD, inst_idx, mmUVD_RB_SIZE2, ring->ring_size / 4); @@ -1398,6 +1415,10 @@ static int vcn_v2_5_pause_dpg_mode(struct amdgpu_device *adev, WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR, RREG32_SOC15(UVD, inst_idx, mmUVD_SCRATCH2) & 0x7FFFFFFF); + /* Unstall DPG */ + WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), + 0, ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); + SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_POWER_STATUS, UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON, UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code); } |