On 21/04/15 16:41, Alex Deucher wrote: > On Tue, Apr 21, 2015 at 11:56 AM, Emil Velikov <emil.l.velikov@xxxxxxxxx> wrote: >> Hi Alex, >> >> On 20 April 2015 at 23:33, Alex Deucher <alexdeucher@xxxxxxxxx> 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 >>> >>> 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! >>> >> Do you plan to sending out the libdrm patches to the ML ? I have a few >> comments that you might be interested in :-) > > Yeah, just sent them out now. Ran out of time last night. Some of > the patches in the kernel and the ddx patch are really big so probably > too big for the ML. > Fair enough, did not mean to come out as impatient - was the first thing that pope at my email client after a short break. Just a random question on the ddx front - do you see many benefits of supporting old xservers ? If you target xserver 1.16 and later you can drop a fair bit of code/wrappers - Non DRI2 enabled xserver. - HAS_DEVPRIVATEKEYREC (new with 1.10, released 4+ years ago) - xorg-list (new with 1.12, released 3+ years ago) - DRI2_PRIME (new with 1.13, released 2+ years ago) - AMDGPU_PIXMAP_SHARING (XF86_CRTC_VERSION >= 5, new with 1.13) - Support for external the glamor library (new with 1.16) While you're there you might want to drop support for xextproto pre 7.1. 7.1.0 was released 6+ years ago. The README and .gitignore mention xf86-video-ati. Hope you find any of the above useful :) -Emil _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
