________________________________
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Christian König <ckoenig.leichtzumerken at gmail.com>
Sent: Wednesday, January 17, 2018 7:42 AM
To: Alex Deucher
Cc: amd-gfx list
Subject: Re: [PATCH 10/21] drm/amdgpu: wire up emit_wreg for UVD v6
Am 16.01.2018 um 21:01 schrieb Alex Deucher:
> On Tue, Jan 16, 2018 at 2:40 PM, Christian König
> <ckoenig.leichtzumerken at gmail.com> wrote:
>> Needed for vm_flush unification.
>>
>> Signed-off-by: Christian König <christian.koenig at amd.com>
>> ---
>> drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>> index c6e22eff89e7..b48b843c66ae 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
>> @@ -1059,6 +1059,17 @@ static void uvd_v6_0_enc_ring_emit_ib(struct amdgpu_ring *ring,
>> amdgpu_ring_write(ring, ib->length_dw);
>> }
>>
>> +static void uvd_v6_0_ring_emit_wreg(struct amdgpu_ring *ring,
>> + uint32_t reg, uint32_t val)
>> +{
>> + amdgpu_ring_write(ring, PACKET0(mmUVD_GPCOM_VCPU_DATA0, 0));
>> + amdgpu_ring_write(ring, reg << 2);
>> + amdgpu_ring_write(ring, PACKET0(mmUVD_GPCOM_VCPU_DATA1, 0));
>> + amdgpu_ring_write(ring, val);
>> + amdgpu_ring_write(ring, PACKET0(mmUVD_GPCOM_VCPU_CMD, 0));
>> + amdgpu_ring_write(ring, 0x8);
> Is this valid on UVD6?
This is valid on the decode ring of UVD6, only the HEVC UVD6 encode and
VCE3 rings use different commands.
> I think this may be a UVD7 thing. Looking at
> the other UVD code, I think we just want:
> amdgpu_ring_write(ring, PACKET0(reg, 0));
> amdgpu_ring_write(ring, val);
IIRC that won't work. The UVD RBC can only write to UVD registers using
the PACKET0 command.
We probably need to fix a bunch of functions in uvd4,5,6,7 in that case which use packet0 directly to write non-UVD registers.
Alex
Regards,
Christian.
>
> Alex
>
>
>> +}
>> +
>> static void uvd_v6_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
>> unsigned vmid, unsigned pasid,
>> uint64_t pd_addr)
>> @@ -1595,6 +1606,7 @@ static const struct amdgpu_ring_funcs uvd_v6_0_ring_vm_funcs = {
>> .pad_ib = amdgpu_ring_generic_pad_ib,
>> .begin_use = amdgpu_uvd_ring_begin_use,
>> .end_use = amdgpu_uvd_ring_end_use,
>> + .emit_wreg = uvd_v6_0_ring_emit_wreg,
>> };
>>
>> static const struct amdgpu_ring_funcs uvd_v6_0_enc_ring_vm_funcs = {
>> --
>> 2.14.1
>>
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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