[PATCH] drm/amdgpu/gfx7: move eop programming per queue

[Alex Deucher]

On Wed, Nov 23, 2016 at 6:00 PM, Jay Cornwall <jay at jcornwall.me> wrote:
> On Wed, Nov 23, 2016, at 14:27, Alex Deucher wrote:
>> It's per queue not per pipe.
>
> Are you sure? I was under the impression that EOP queeus were per-pipe
> on Gfx7 and per-queue on Gfx8 onwards (to support context save/restore).
> It's also hinted at by the register name (HPD == Hardware Pipe
> Descriptor, HQD == Hardware Queue Descriptor).

No, I'm not sure.  I have a patch set for amdgpu to leave the
fb_location as programmed by the vbios rather than reprogramming which
resulted in vram not being at 0 in the GPU's address space.  I then
got ring failures on the compute queues until I made the eops per
queue.  It could be something else, but this seemed to fix it.

Alex