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 drm/i915: Enable GuC submission, where supported In this second section, we implement the GuC submission mechanism, link it into the (execlist-based) submission path, and finally enable it (on supported platforms). On platforms where there is no GuC, or if GuC submission is explicitly disabled, batch submission will revert to using the execlist mechanism directly. On the other hand, if the GuC firmware cannot be found or is invalid, the GPU will be unusable. 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. 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 (5): 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 drm/i915: Enable GuC submission, where supported Documentation/DocBook/drm.tmpl | 14 + drivers/gpu/drm/i915/Makefile | 4 + drivers/gpu/drm/i915/i915_debugfs.c | 122 +++- 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 | 13 +- drivers/gpu/drm/i915/i915_guc_reg.h | 17 +- drivers/gpu/drm/i915/i915_guc_submission.c | 887 +++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_params.c | 4 +- drivers/gpu/drm/i915/i915_reg.h | 15 +- drivers/gpu/drm/i915/intel_guc.h | 122 ++++ drivers/gpu/drm/i915/intel_guc_fwif.h | 3 +- drivers/gpu/drm/i915/intel_guc_loader.c | 613 ++++++++++++++++++++ drivers/gpu/drm/i915/intel_lrc.c | 65 ++- drivers/gpu/drm/i915/intel_lrc.h | 8 + 16 files changed, 1881 insertions(+), 42 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 -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
