[PATCH] drm/radeon: Always flush VM again on < CIK

[Christian König]

>>> On Thu, Aug 7, 2014 at 3:59 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>>> We should be using PFP as much as possible.  Does the attached patch help?
> Unfortunately not.

Maybe add a readback of the VM base addr pointer to make sure that the 
write has really reached the SBRM?

Otherwise I'm out of ideas as well,
Christian.


Am 08.08.2014 um 04:38 schrieb Michel Dänzer:
> On 08.08.2014 00:55, Alex Deucher wrote:
>> Note that there is no PFP (or CE) on the compute queues so we can't
>> use PFP (or CE) for compute.
> AFAICT cik_hdp_flush_cp_ring_emit() always uses the PFP though.
>
>
>> Note also that the engine bit is not always consistent (for some packets 0
>> = ME, 1 = PFP and for others 1= ME and 0 = PFP).
> Ugh. Then we should probably use explicit *_ENGINE_PFP/ME macros instead
> of *_ENGINE(lucky_number). :)
>
>
>>> On Thu, Aug 7, 2014 at 3:59 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
>>>> We should be using PFP as much as possible.  Does the attached patch help?
> Unfortunately not.
>
>