drm/i915:Initialize the second BSD ring on BDW GT3 machine
authorZhao Yakui <yakui.zhao@intel.com>
Thu, 17 Apr 2014 02:37:37 +0000 (10:37 +0800)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 5 May 2014 07:08:46 +0000 (09:08 +0200)
commit845f74a701541662bf7d4880a0f4d492b28f2d18
tree3eedda3b84166f28ec069797670a8f6452c77933
parentb1a93306ed2686a7064ed54f99203b6db852ca27
drm/i915:Initialize the second BSD ring on BDW GT3 machine

Based on the hardware spec, the BDW GT3 machine has two independent
BSD ring that can be used to dispatch the video commands.
So just initialize it.

V3->V4: Follow Imre's comment to do some minor updates. For example:
more comments are added to describe the semaphore between ring.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
[danvet: Fix up checkpatch error.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_drv.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/i915_gpu_error.c
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_ringbuffer.c
drivers/gpu/drm/i915/intel_ringbuffer.h