[Mesa-dev] Initial amdgpu driver release

[Alex Deucher]

On Mon, Apr 20, 2015 at 6:33 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> I'm pleased to announce the initial release of the new amdgpu driver.
> This is a partial replacement for the radeon driver for newer AMD
> asics.  A number of components are still shared.  Here is a comparison
> of the radeon and amdgpu stacks:
>
> 1. radeon stack
> kernel driver: radeon.ko
> libdrm: libdrm_radeon
> mesa: radeon, r200, r300, r600, radeonsi
> ddx: xf86-video-ati
>
> 2. amdgpu stack
> kernel driver: amdgpu.ko
> libdrm: libdrm_amdgpu
> mesa: radeonsi
> ddx: xf86-video-amdgpu
>
> Older asics will continue to be supported by the radeon stack; new
> asics will be supported by the amdgpu stack.  CI (Sea Islands) asics
> have support in both driver stacks, but this is purely for testing
> purposes.  CI parts are officially supported in the radeon stack.
> Support for CI on the amdgpu stack is determined by a config option in
> the kernel.  CI support is not enabled by default for amdgpu.
>
> Most of our focus has been on Carrizo support, so there are some gaps
> in the dGPU support for Tonga and Iceland, notably power management.
> Those gaps will be filled in eventually.
>
> Also included in this code base are full register headers for just
> about every block on the asics.
>
> Barring the gaps mentioned above, the driver stack is functionally on
> par with radeon including:
> - OpenGL 3.3 support using the radeonsi mesa driver
> - Video decode support using UVD
> - Video encode support using VCE
>
> The code can be found in the amdgpu branches of the following git trees.
> xf86-video-amdgpu:
> http://cgit.freedesktop.org/~agd5f/xf86-video-amdgpu/log/?h=amdgpu
> libdrm:
> http://cgit.freedesktop.org/~agd5f/drm/log/?h=amdgpu
> kernel:
> http://cgit.freedesktop.org/~agd5f/linux/log/?h=amdgpu
> mesa:
> http://cgit.freedesktop.org/~mareko/mesa/log/?h=amdgpu

Some updates on the latest source locations:

xf86-video-amdgpu:
http://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu
libdrm:
http://cgit.freedesktop.org/~agd5f/drm/log/?h=amdgpu
kernel:
http://cgit.freedesktop.org/amd/drm-amd/
mesa:
http://cgit.freedesktop.org/mesa/mesa/log/?h=amdgpu

Alex


>
> To test the new driver stack you will need to specify a device section
> in your xorg.conf with the driver set to amdgpu rather than radeon.
>
> Please review!
>
> Thanks,
>
> The AMD Linux Driver Team
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