[Intel-gfx] drm/i915/bdw: Enable resource streamer on Broadwell
Abdiel Janulgue
abdiel.janulgue at linux.intel.com
Tue May 6 21:25:04 CEST 2014
From: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
This is a re-spin of my resource streamer patchset from October
adapted to enable the feature on Broadwell instead.
The resource streamer is a hw-feature that helps in reducing commands
being submitted by the CPU. Haswell initially has this feature.
Unfortunately, HSW seems to have problems switching between non-RS
and RS-enabled commands[1]. On BDW however it works seamlessly
as expected.
The i-g-t test comes next on a separate patch-series.
--
[1] http://lists.freedesktop.org/archives/intel-gfx/2014-May/044577.html
Abdiel Janulgue (2):
drm/i915/bdw: Enable resource streamer bits on MI_BATCH_BUFFER_START
drm/i915/bdw: Expose I915_EXEC_RESOURCE_STREAMER flag
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 ++++++++
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++-
drivers/gpu/drm/i915/intel_ringbuffer.h | 1 +
include/uapi/drm/i915_drm.h | 7 ++++++-
5 files changed, 18 insertions(+), 2 deletions(-)
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