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 three subsequences within the patch series: drm/i915: Add i915_gem_object_create_from_data() drm/i915: Embedded microcontroller (uC) firmware loading support These first two patches provide a common framework for fetching the firmware that may be required by any embedded microcontroller from a file, and saving some or all of it in a pageable (shmfs-backed) GEM object (or otherwise, if required by the uC-specific code). It is hoped that this framework is sufficiently general that it can be used for all curent and future microcontrollers. drm/i915: Add GuC-related module parameters drm/i915: Add GuC-related header files drm/i915: GuC-specific firmware loader drm/i915: Debugfs interface to read GuC load status These four patches complete the GuC loader. 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 two LRC functions for GuC submission mode drm/i915: GuC submission setup, phase 1 drm/i915: Enable GuC firmware log drm/i915: Implementation of GuC client drm/i915: Interrupt routing for GuC submission drm/i915: Integrate GuC-based command submission drm/i915: Debugfs interface for GuC submission statistics Documentation/drm: kerneldoc for GuC drm/i915: Enable GuC submission, where supported In the final 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 the GuC firmware cannot be found or is invalid, batch submission will revert to using the execlist mechanism directly. 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. Prerequisites: GuC submission will expose existing inadequacies in some of the existing codepaths unless certain other patches are applied. In particular we require Michel Thierry's patch: drm/i915/lrc: Update PDPx registers with LRI commands (because the GuC support light-restore, which execlist mode doesn't). Unfortunately the version of this recently committed to drm-intel-nightly 7a01a0a drm/i915/lrc: Update PDPx registers with lri commands was incomplete in a way that was mostly harmless, but incompatible with GuC usage, so the missing part has been folded into patch 7 below: drm/i915: Expose two LRC functions for GuC submission mode The previous prerequisite patch drm/i915: Allocate OLR more safely (workaround until OLR goes away) is no longer required as the OLR has now gone away :) Alex Dai (7): drm/i915: Add GuC-related module parameters drm/i915: GuC-specific firmware loader drm/i915: Debugfs interface to read GuC load status drm/i915: GuC submission setup, phase 1 drm/i915: Enable GuC firmware log drm/i915: Integrate GuC-based command submission Documentation/drm: kerneldoc for GuC Dave Gordon (8): drm/i915: Add i915_gem_object_create_from_data() drm/i915: Embedded microcontroller (uC) firmware loading support drm/i915: Add GuC-related header files drm/i915: Expose two LRC functions for GuC submission mode drm/i915: Implementation of GuC client drm/i915: Interrupt routing for GuC submission drm/i915: Debugfs interface for GuC submission statistics drm/i915: Enable GuC submission, where supported Ben Widawsky (0): Vinit Azad (0): Michael H. Nguyen (0): created the original versions on which some of these patches are based. Documentation/DocBook/drm.tmpl | 19 + drivers/gpu/drm/i915/Makefile | 7 + drivers/gpu/drm/i915/i915_debugfs.c | 116 +++- drivers/gpu/drm/i915/i915_dma.c | 4 + drivers/gpu/drm/i915/i915_drv.h | 15 + drivers/gpu/drm/i915/i915_gem.c | 48 ++ drivers/gpu/drm/i915/i915_guc_reg.h | 102 ++++ drivers/gpu/drm/i915/i915_guc_submission.c | 861 +++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_params.c | 9 + drivers/gpu/drm/i915/i915_reg.h | 15 +- drivers/gpu/drm/i915/intel_guc.h | 101 ++++ drivers/gpu/drm/i915/intel_guc_fwif.h | 236 ++++++++ drivers/gpu/drm/i915/intel_guc_loader.c | 530 ++++++++++++++++++ drivers/gpu/drm/i915/intel_lrc.c | 85 +-- drivers/gpu/drm/i915/intel_lrc.h | 11 + drivers/gpu/drm/i915/intel_uc_loader.c | 310 +++++++++++ drivers/gpu/drm/i915/intel_uc_loader.h | 92 +++ 17 files changed, 2520 insertions(+), 41 deletions(-) create mode 100644 drivers/gpu/drm/i915/i915_guc_reg.h 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_fwif.h create mode 100644 drivers/gpu/drm/i915/intel_guc_loader.c create mode 100644 drivers/gpu/drm/i915/intel_uc_loader.c create mode 100644 drivers/gpu/drm/i915/intel_uc_loader.h -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
