On Wed, Aug 12, 2015 at 07:57:37AM -0700, Gordon, David S wrote: > On 12/08/15 15:43, Dave Gordon wrote: > > This patch series enables command submission via the GuC. In this mode, > > instead of the host CPU driving the execlist port directly, it hands > > over work items to the GuC, using a doorbell mechanism to tell the GuC > > that new items have been added to its work queue. The GuC then dispatches > > contexts to the various GPU engines, and manages the resulting context- > > switch interrupts. Completion of a batch is however still signalled to > > the CPU; the GuC is not involved in handling user interrupts. > > > > There are two subsequences within the patch series: > > > > drm/i915: GuC-specific firmware loader > > drm/i915: Debugfs interface to read GuC load status > > > > These two patches provide the GuC loader and a debugfs interface to > > verify the resulting state. At this point in the sequence we can load > > and activate the GuC firmware, but not submit any batches through it. > > (This is nonetheless a potentially useful state, as the GuC could do > > other useful work even when not handling batch submissions). > > > > drm/i915: Expose one LRC function for GuC submission mode > > drm/i915: Prepare for GuC-based command submission > > drm/i915: Enable GuC firmware log > > drm/i915: Implementation of GuC submission client > > drm/i915: Interrupt routing for GuC submission > > drm/i915: Integrate GuC-based command submission > > drm/i915: Debugfs interface for GuC submission statistics > > > > In this second section, we implement the GuC submission mechanism, and > > link it into the (execlist-based) submission path. At this stage, it is > > not yet enabled by default; it is activated only if the kernel command > > line explicitly switches it on. > > > > The GuC firmware itself is not included in this patchset; it is or will > > be available for download from https://01.org/linuxgraphics/downloads/ > > This driver works with and requires GuC firmware revision 3.x. It will > > not work with any firmware version 1.x, as the GuC protocol in those > > revisions was incompatible and is no longer supported. > > > > On platforms where there is no GuC, or where GuC submission is not > > specifically enabled, batch submission will continue to use the execlist > > (or ringbuffer) mechanisms. On the other hand, if GuC submission is > > requested but the GuC firmware cannot be found or is invalid, the GPU > > will be unusable. > > > > It is expected that a subsequent patch will enable GuC submission by > > default once the signed firmware is published on 01.org. > > > > Ben Widawsky (0): > > Vinit Azad (0): > > Michael H. Nguyen (0): > > created the original versions on which some of these patches are based. > > > > Alex Dai (5): > > drm/i915: GuC-specific firmware loader > > drm/i915: Debugfs interface to read GuC load status > > drm/i915: Prepare for GuC-based command submission > > drm/i915: Enable GuC firmware log > > drm/i915: Integrate GuC-based command submission > > > > Dave Gordon (4): > > drm/i915: Expose one LRC function for GuC submission mode > > drm/i915: Implementation of GuC submission client > > drm/i915: Interrupt routing for GuC submission > > drm/i915: Debugfs interface for GuC submission statistics > > > > Documentation/DocBook/drm.tmpl | 14 + > > drivers/gpu/drm/i915/Makefile | 4 + > > drivers/gpu/drm/i915/i915_debugfs.c | 146 ++++- > > drivers/gpu/drm/i915/i915_dma.c | 9 + > > drivers/gpu/drm/i915/i915_drv.h | 11 + > > drivers/gpu/drm/i915/i915_gem.c | 16 + > > drivers/gpu/drm/i915/i915_gpu_error.c | 14 +- > > drivers/gpu/drm/i915/i915_guc_reg.h | 17 +- > > drivers/gpu/drm/i915/i915_guc_submission.c | 901 +++++++++++++++++++++++++++++ > > drivers/gpu/drm/i915/i915_reg.h | 15 +- > > drivers/gpu/drm/i915/intel_guc.h | 122 ++++ > > drivers/gpu/drm/i915/intel_guc_fwif.h | 9 +- > > drivers/gpu/drm/i915/intel_guc_loader.c | 611 +++++++++++++++++++ > > drivers/gpu/drm/i915/intel_lrc.c | 65 ++- > > drivers/gpu/drm/i915/intel_lrc.h | 8 + > > 15 files changed, 1918 insertions(+), 44 deletions(-) > > create mode 100644 drivers/gpu/drm/i915/i915_guc_submission.c > > create mode 100644 drivers/gpu/drm/i915/intel_guc.h > > create mode 100644 drivers/gpu/drm/i915/intel_guc_loader.c > > Tom O'Rourke has already R-B'ed the previous [v5] versions of these, and > there are no substantive changes to patches 2, 3, 4, 5, 7 and 8, so we > can carry that over; also, the change in patch 1 is just an update to a > comment noted in Tom's earlier reviews as being out-of-date. > > I haven't included patch 10 (enable-by-default) as we've decided to wait > until the signed firmware is publicly available on 01.org before > making it the default. > > So, it's really just patches 6/9 and 9/9 that need a re-review from Tom. > > Thanks, > .Dave. [TOR:] These patches still look good. Good catch in patch 6 with the offset. For all 9 patches: Reviewed-by: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
