Thanks Christian.
Have sent the patch for uvd & vcn.
(https://patchwork.freedesktop.org/patch/308575/)
Regards,
Shirish S
-Original Message-
From: Christian König
Sent: Tuesday, June 4, 2019 4:38 PM
To: S, Shirish ; Deucher, Alexander
; Koenig, Christian ;
jerry.zh...@amd.com; Deng, Emily ; Liu, Leo
Cc: amd-gfx@lists.freedesktop.org; Li, Ching-shih (Louis)
Subject: Re: [PATCH] drm/amdgpu: fix ring test failure issue during s3 in vce
3.0 (V2)
Am 04.06.19 um 10:36 schrieb S, Shirish:
> From: Louis Li
>
> [What]
> vce ring test fails consistently during resume in s3 cycle, due to
> mismatch read & write pointers.
> On debug/analysis its found that rptr to be compared is not being
> correctly updated/read, which leads to this failure.
> Below is the failure signature:
> [drm:amdgpu_vce_ring_test_ring] *ERROR* amdgpu: ring 12 test failed
> [drm:amdgpu_device_ip_resume_phase2] *ERROR* resume of IP block
> failed -110
> [drm:amdgpu_device_resume] *ERROR* amdgpu_device_ip_resume failed
> (-110).
>
> [How]
> fetch rptr appropriately, meaning move its read location further down
> in the code flow.
> With this patch applied the s3 failure is no more seen for >5k s3
> cycles, which otherwise is pretty consistent.
>
> V2: remove reduntant fetch of rptr
>
> Signed-off-by: Louis Li
Reviewed-by: Christian König
CC: stable...
Who does the same patch for UVD and VCN? Exactly the same thing is wrong there
as well.
Christian.
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> index c021b11..f7189e2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> @@ -1072,7 +1072,7 @@ void amdgpu_vce_ring_emit_fence(struct amdgpu_ring
> *ring, u64 addr, u64 seq,
> int amdgpu_vce_ring_test_ring(struct amdgpu_ring *ring)
> {
> struct amdgpu_device *adev = ring->adev;
> - uint32_t rptr = amdgpu_ring_get_rptr(ring);
> + uint32_t rptr;
> unsigned i;
> int r, timeout = adev->usec_timeout;
>
> @@ -1084,6 +1084,8 @@ int amdgpu_vce_ring_test_ring(struct amdgpu_ring *ring)
> if (r)
> return r;
>
> + rptr = amdgpu_ring_get_rptr(ring);
> +
> amdgpu_ring_write(ring, VCE_CMD_END);
> amdgpu_ring_commit(ring);
>
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