Push a few bits down into adreno_gpu so they won't have to be duplicated
as support for additional adreno generations is added.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Move this into into adreno_device, and decide based on gpu revision
rather than just assuming a3xx.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Helper macro to simplify places where we need to poll with timeout
waiting for gpu.
Signed-off-by: NRob Clark <robdclark@gmail.com>

msm.hang_debug=y will dump out current register values if the gpu locks
up, for easier debugging.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Add support for adreno 330.  Not too much different, just a few
differences in initial configuration plus setting OCMEM base.
Userspace support is already in upstream mesa.

Note that the existing DT code is simply using the bindings from
downstream android kernel, to simplify porting of this driver to
existing devices.  These do not constitute any committed/stable
DT ABI.  The addition of proper DT bindings will be a subsequent
patch, at which point (as best as possible) I will try to support
either upstream bindings or what is found in downstream android
kernel, so that existing device DT files can be used.
Signed-off-by: NRob Clark <robdclark@gmail.com>

This got a bit broken with original patches when re-arranging things to
move dependencies on mach-msm inside #ifndef OF.
Signed-off-by: NRob Clark <robdclark@gmail.com>

A basic, no-frills recovery mechanism in case the gpu gets wedged.  We
could try to be a bit more fancy and restart the next submit after the
one that got wedged, but for now keep it simple.  This is enough to
recover things if, for example, the gpu hangs mid way through a piglit
run.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Add initial support for a3xx 3d core.

So far, with hardware that I've seen to date, we can have:
 + zero, one, or two z180 2d cores
 + a3xx or a2xx 3d core, which share a common CP (the firmware
   for the CP seems to implement some different PM4 packet types
   but the basics of cmdstream submission are the same)

Which means that the eventual complete "class" hierarchy, once
support for all past and present hw is in place, becomes:
 + msm_gpu
   + adreno_gpu
     + a3xx_gpu
     + a2xx_gpu
   + z180_gpu

This commit splits out the parts that will eventually be common
between a2xx/a3xx into adreno_gpu, and the parts that are even
common to z180 into msm_gpu.

Note that there is no cmdstream validation required.  All memory access
from the GPU is via IOMMU/MMU.  So as long as you don't map silly things
to the GPU, there isn't much damage that the GPU can do.
Signed-off-by: NRob Clark <robdclark@gmail.com>