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drm/amdgpu/vce4: workaround VCE ring test slow issue

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Add VCE ring test slow workaround for SRIOV.

Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiangliang Yu 2017-04-06 14:43:48 +08:00 committed by Alex Deucher
parent 71f2af890a
commit a2f537e03b
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
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@ -955,7 +955,11 @@ int amdgpu_vce_ring_test_ring(struct amdgpu_ring *ring)
struct amdgpu_device *adev = ring->adev;
uint32_t rptr = amdgpu_ring_get_rptr(ring);
unsigned i;
int r;
int r, timeout = adev->usec_timeout;
/* workaround VCE ring test slow issue for sriov*/
if (amdgpu_sriov_vf(adev))
timeout *= 10;
/* TODO: remove it if VCE can work for sriov */
if (amdgpu_sriov_vf(adev))
@ -970,13 +974,13 @@ int amdgpu_vce_ring_test_ring(struct amdgpu_ring *ring)
amdgpu_ring_write(ring, VCE_CMD_END);
amdgpu_ring_commit(ring);
for (i = 0; i < adev->usec_timeout; i++) {
for (i = 0; i < timeout; i++) {
if (amdgpu_ring_get_rptr(ring) != rptr)
break;
DRM_UDELAY(1);
}
if (i < adev->usec_timeout) {
if (i < timeout) {
DRM_INFO("ring test on %d succeeded in %d usecs\n",
ring->idx, i);
} else {