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drm/amdgpu/vcn:fix dpg pause mode hang issue

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Use mmUVD_SCRATCH2 tracking decode write point.
It will help avoid dpg pause mode hang issue.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2018-10-02 11:44:50 -04:00 committed by Alex Deucher
parent 9332ddc915
commit 2dc4aa523b
2 changed files with 10 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
View File

@ -263,7 +263,7 @@ static int amdgpu_vcn_pause_dpg_mode(struct amdgpu_device *adev,
ring = &adev->vcn.ring_dec;
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR,
lower_32_bits(ring->wptr) | 0x80000000);
RREG32_SOC15(UVD, 0, mmUVD_SCRATCH2));
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS,
UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);
@ -320,7 +320,7 @@ static int amdgpu_vcn_pause_dpg_mode(struct amdgpu_device *adev,
ring = &adev->vcn.ring_dec;
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR,
lower_32_bits(ring->wptr) | 0x80000000);
RREG32_SOC15(UVD, 0, mmUVD_SCRATCH2));
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS,
UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);

8
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
View File

@ -873,6 +873,8 @@ static int vcn_v1_0_start_spg_mode(struct amdgpu_device *adev)
/* Initialize the ring buffer's read and write pointers */
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_RPTR, 0);
WREG32_SOC15(UVD, 0, mmUVD_SCRATCH2, 0);
ring->wptr = RREG32_SOC15(UVD, 0, mmUVD_RBC_RB_RPTR);
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR,
lower_32_bits(ring->wptr));
@ -1049,6 +1051,8 @@ static int vcn_v1_0_start_dpg_mode(struct amdgpu_device *adev)
/* Initialize the ring buffer's read and write pointers */
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_RPTR, 0);
WREG32_SOC15(UVD, 0, mmUVD_SCRATCH2, 0);
ring->wptr = RREG32_SOC15(UVD, 0, mmUVD_RBC_RB_RPTR);
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR,
lower_32_bits(ring->wptr));
@ -1215,6 +1219,10 @@ static void vcn_v1_0_dec_ring_set_wptr(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
WREG32_SOC15(UVD, 0, mmUVD_SCRATCH2,
lower_32_bits(ring->wptr) | 0x80000000);
WREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr));
}