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| author | Frank Min <Frank.Min@amd.com> | 2017-06-12 05:53:19 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-08-15 21:45:45 +0300 |
| commit | ab2b2e4f8b24b789eba2f95394210b644a6fcc44 (patch) | |
| tree | 53fcd7b4af73546813cba7efdce01371b4647f52 /drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | |
| parent | 330df03b3abf944f8f5180f2abc61367749984c0 (diff) | |
| download | linux-ab2b2e4f8b24b789eba2f95394210b644a6fcc44.tar.xz | |
drm/amdgpu: Clear vce&uvd ring wptr for SRIOV
MMSCH FW need to get the wptr from 0 after it get the mailbox request
from driver, since every time kick the mailbox, mmsch thinks that it
is the first time engine start to initialize.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang.Yu <Xiangliang.Yu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c index 987b958368ac..e2b17cbb2e79 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c @@ -685,6 +685,11 @@ static int uvd_v7_0_mmsch_start(struct amdgpu_device *adev, /* 4, set resp to zero */ WREG32_SOC15(VCE, 0, mmVCE_MMSCH_VF_MAILBOX_RESP, 0); + WDOORBELL32(adev->uvd.ring_enc[0].doorbell_index, 0); + adev->wb.wb[adev->uvd.ring_enc[0].wptr_offs] = 0; + adev->uvd.ring_enc[0].wptr = 0; + adev->uvd.ring_enc[0].wptr_old = 0; + /* 5, kick off the initialization and wait until VCE_MMSCH_VF_MAILBOX_RESP becomes non-zero */ WREG32_SOC15(VCE, 0, mmVCE_MMSCH_VF_MAILBOX_HOST, 0x10000001); @@ -702,7 +707,6 @@ static int uvd_v7_0_mmsch_start(struct amdgpu_device *adev, dev_err(adev->dev, "failed to init MMSCH, mmVCE_MMSCH_VF_MAILBOX_RESP = %x\n", data); return -EBUSY; } - WDOORBELL32(adev->uvd.ring_enc[0].doorbell_index, 0); return 0; } |