Am 05.06.19 um 03:35 schrieb S, Shirish:
> Hi Alex,
>
> On 6/4/2019 9:43 PM, Alex Deucher wrote:
>> On Tue, Jun 4, 2019 at 12:07 PM S, Shirish <Shirish.S@xxxxxxx> wrote:
>>> [What]
>>> readptr read always returns zero, since most likely
>>> UVD block is either power or clock gated.
>>>
>>> [How]
>>> fetch rptr after amdgpu_ring_alloc() which informs
>>> the power management code that the block is about to be
>>> used and hence the gating is turned off.
>>>
>>> Signed-off-by: Louis Li <Ching-shih.Li@xxxxxxx>
>>> Signed-off-by: Shirish S <shirish.s@xxxxxxx>
>>> ---
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 +++-
>>> drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 5 ++++-
>>> drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 5 ++++-
>> What about uvd 4.2, 5.0 and VCE 2.0, 3.0, 4.0?
> amdgpu_vce_ring_test_ring() is the common function for VCE 2.0, 3.0 & 4.0
> and patch that fixes it, is already reviewed.
>
> UVD 4.2 & 5.0 use mmUVD_CONTEXT_ID instead of readptr,
> so i beleive this fix is not applicable for them.
Yeah, agree that should actually work fine for those.
This patch is Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Regards,
Christian.
> Regards,
> Shirish S
>> Alex
>>
>>> 3 files changed, 11 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>>> index 118451f..d786098 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
>>> @@ -468,7 +468,7 @@ int amdgpu_vcn_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout)
>>> int amdgpu_vcn_enc_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;
>>>
>>> @@ -476,6 +476,8 @@ int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring)
>>> if (r)
>>> return r;
>>>
>>> + rptr = amdgpu_ring_get_rptr(ring);
>>> +
>>> amdgpu_ring_write(ring, VCN_ENC_CMD_END);
>>> amdgpu_ring_commit(ring);
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>>> index c61a314..16682b7 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>>> @@ -170,13 +170,16 @@ static void uvd_v6_0_enc_ring_set_wptr(struct amdgpu_ring *ring)
>>> static int uvd_v6_0_enc_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;
>>>
>>> r = amdgpu_ring_alloc(ring, 16);
>>> if (r)
>>> return r;
>>> +
>>> + rptr = amdgpu_ring_get_rptr(ring);
>>> +
>>> amdgpu_ring_write(ring, HEVC_ENC_CMD_END);
>>> amdgpu_ring_commit(ring);
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
>>> index cdb96d4..74811b2 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
>>> @@ -175,7 +175,7 @@ static void uvd_v7_0_enc_ring_set_wptr(struct amdgpu_ring *ring)
>>> static int uvd_v7_0_enc_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;
>>>
>>> @@ -185,6 +185,9 @@ static int uvd_v7_0_enc_ring_test_ring(struct amdgpu_ring *ring)
>>> r = amdgpu_ring_alloc(ring, 16);
>>> if (r)
>>> return r;
>>> +
>>> + rptr = amdgpu_ring_get_rptr(ring);
>>> +
>>> amdgpu_ring_write(ring, HEVC_ENC_CMD_END);
>>> amdgpu_ring_commit(ring);
>>>
>>> --
>>> 2.7.4
>>>
>>> _______________________________________________
>>> amd-gfx mailing list
>>> amd-gfx@xxxxxxxxxxxxxxxxxxxxx
>>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
