Hi there,
As you may remember, I was working on porting VCE 1.0 to amdgpu
around the time Piotr Redlewski sent the UVD patches. I would
prefer to go the way proposed by Alex Deucher than to see SI
support being dropped. I've been using the amdgpu on a 280X ever
since it was possible. While there were some quirks in the
beginning, it is plenty usable and performant ever since.
Also, using amdgpu comes with some benefits unavailable with the radeon driver on a gaming perspective.
Now, if my work on porting VCE 1.0 has stalled, it's because I'm now a father and I had only so little time to work on it. The code I was working on is still dormant (some of it was sent on my github repo) and I'm pretty sure I was almost done with it.
Please, don't drop SI support from amdgpu. If it was only for me,
amdgpu would be the default driver over radeon and people missing
the UVD and VCE features should be the ones overriding the default
choice. But this may not work for the majority (I don't know) and
I understand that radeon is still the default for GCN 1.0/1.1.
Cheers,
Alexandre Demers
[AMD Official Use Only - Internal Distribution Only]
You could enable UVD support on amdgpu using the original firmware from radeon, but you'd have to adjust the memory map on the GPU for SI to match radeon. So updated firmware is not a requirement per se, it's just needed to keep the memory map the same as other GPUs.
Alex
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Christian König <ckoenig.leichtzumerken@xxxxxxxxx>
Sent: Thursday, December 5, 2019 10:19 AM
To: Matthew Taylor <mat@xxxxxxxxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [RFC 0/7] UVD support for SI in amdgpuHi Matthew,
Am 05.12.19 um 15:16 schrieb Matthew Taylor:
Hi,
Back in November 2017, Piotr Redlewski, provided some patches for UVD support in the SI cards, the thread had the same subject as this message.
The outcome of a conversation between himself and other developers on the list was to wait for something in updated firmware. As this was over 2 years ago, I was wondering if the firmware has been updated sufficiently for Piotr's patches to be reconsidered or modified to deliver the UVD support for the SI cards?
we discussed that internally quite lengthy and the firmware will probably never be released.
To be honest we actually considering dropping SI support completely from amdgpu.
Regards,
Christian.
Thanks for you help
Kind Regards
Matthew Taylor
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