[PATCH 3/3] drm/amdgpu: CIK support is no longer experimental

[Marek Olšák]

On Thu, Apr 13, 2017 at 6:41 PM, Nicolai Hähnle <nhaehnle at gmail.com> wrote:
> On 11.04.2017 00:06, Felix Kuehling wrote:
>>
>> On 17-04-08 04:50 AM, Nicolai Hähnle wrote:
>>>
>>> On 07.04.2017 22:15, Felix Kuehling wrote:
>>>>
>>>> Change the wording of the CONFIG_DRM_AMDGPU_CIK option to indicate
>>>> that it's no longer experimental.
>>>>
>>>> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
>>>> ---
>>>>  drivers/gpu/drm/amd/amdgpu/Kconfig | 9 +++++----
>>>>  1 file changed, 5 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig
>>>> b/drivers/gpu/drm/amd/amdgpu/Kconfig
>>>> index f3b6df8..029e3fe 100644
>>>> --- a/drivers/gpu/drm/amd/amdgpu/Kconfig
>>>> +++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
>>>> @@ -9,11 +9,12 @@ config DRM_AMDGPU_CIK
>>>>      bool "Enable amdgpu support for CIK parts"
>>>>      depends on DRM_AMDGPU
>>>>      help
>>>> -      Choose this option if you want to enable experimental support
>>>> -      for CIK asics.
>>>> +      Choose this option if you want to enable support for CIK asics.
>>>>
>>>> -      CIK is already supported in radeon.  CIK support in amdgpu
>>>> -      is for experimentation and testing.
>>>> +      If you choose No here, CIK ASICs will be supported by the
>>>> +      radeon driver, as in previous kernel versions. Depending on
>>>> +      your choice you will need different user mode (Mesa, X.org)
>>>> +      drivers to support accelerated graphics on CIK.
>>>
>>>
>>> The last part is a bit misleading: while you do need different DDXes,
>>> the same Mesa driver (radeonsi) will work with both the radeon and the
>>> amdgpu kernel module for CIK. FWIW, the same is true for SI, although
>>> older versions of Mesa might stumble when run on the amdgpu kernel
>>> module.
>>
>>
>> I see. Do you know the minimum Mesa version required for SI and CIK
>> support on amdgpu respectively?
>
>
> For SI, it's Mesa 17.0.
>
> For CIK, I kind of suspect the support has "always" been there, since the
> amdgpu kernel module was originally brought up on CIK, but maybe Marek knows
> more.

Yes, CIK Mesa support should work with all amdgpu versions.

Marek