Re: Is Radeon RX Vega 64 supported by drm-next?

On 18/06/2018 07:04, Johannes Lundberg wrote:
>
>
> On Mon, Jun 18, 2018 at 8:56 AM Grzegorz Junka <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     On 17/06/2018 17:29, Grzegorz Junka wrote:
>     > Hello All
>     >
>     > According to various sources (including posts to freebsd-x11)
>     > drm-stable-kmod supports Polaris (RX 4xx/5xx). Does it mean that
>     > drm-next-kmod supports RX Vega?
>     >
>     > According to Wikipedia Radeon RX 580 is GCN 4th gen:
>     > https://en.wikipedia.org/wiki/AMD_Radeon_500_series
>     >
>     > Which is the last generation before Vega, which in Wikipedia is
>     marked
>     > as GCN 5th gen:
>     > https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units
>     >
>     > So there is no other GPU left between them. There is also
>     nothing else
>     > beyond Vega, which suggests that the only difference between
>     > drm-stable and drm-next is the additional support for the latest
>     GPU -
>     > Vega. Or I am missing something?
>
>     Answering my own question, looks like preliminary Radeon RX Vega
>     support
>     landed in Linux 4.12 with full support in 4.14/15. So it seems
>     there is
>     no additional Radeon GPU supported in drm-next-kmod (Linux 4.11) that
>     isn't already supported in drm-stable-kmod (Linux 4.9). The
>     differences
>     seem to be down to improvements in VM drivers and power management.
>     Please let me know if you have other information.
>
>     Another question, is it possible to estimate work/time before
>     Wayland/drm-kmod on FreeBSD supports Linux 4.12/14/15 or NVidia cards?
>
>
> You can try building the drm-v4.15 branch from source. It should work 
> now with stock kernel (>=1200066).
> https://github.com/FreeBSDDesktop/kms-drm
>
> I use it on my AMD Ryzen 3 2200G APU.
>
> We're getting ready to release 4.15 as a port, however it's not bug 
> free yet so it will be a -devel port.

Sounds great! Sorry for a n00bie question. Once support for drm-kmod 
lands in the 11.2 kernel, will support for newer linuxkpi KMS APIs (i.e. 
4.15) also require kernel changes or they will be supported through 
ports? I don't quite know how the support for linuxkpi drivers is split 
between the kernel and userland.

Thanks
GrzegorzJ
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