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drm/amdgpu: stop disable the scheduler during HW fini

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When we stop the HW for example for GPU reset we should not stop the
front-end scheduler. Otherwise we run into intermediate failures during
command submission.

The scheduler should only be stopped in very few cases:
1. We can't get the hardware working in ring or IB test after a GPU reset.
2. The KIQ scheduler is not used in the front-end and should be disabled during GPU reset.
3. In amdgpu_ring_fini() when the driver unloads.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Test-by: Dennis Li <dennis.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2020-02-21 15:10:31 +01:00
committed by Alex Deucher
parent 6b6706cdac
commit 1675c3a24d
20 changed files with 10 additions and 104 deletions
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9
drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
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@@ -252,21 +252,12 @@ done:
static int vcn_v2_0_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
struct amdgpu_ring *ring = &adev->vcn.inst->ring_dec;
int i;
if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) ||
(adev->vcn.cur_state != AMD_PG_STATE_GATE &&
RREG32_SOC15(VCN, 0, mmUVD_STATUS)))
vcn_v2_0_set_powergating_state(adev, AMD_PG_STATE_GATE);
ring->sched.ready = false;
for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
ring = &adev->vcn.inst->ring_enc[i];
ring->sched.ready = false;
}
return 0;
}