From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> First two patches in this series fix losing of workarounds after engine reset (https://bugzilla.freedesktop.org/show_bug.cgi?id=107945) which started happening after 59b449d5c82a ("drm/i915: Split out functions for different kinds of workarounds"). But since it was discovered to be unsafe to simply re-apply all of them, against a possibly active GPU, and potentially from IRQ context, the approach taken was to split GT workarounds and per-engine workarounds. Latter so far contain the ones living in the 0x2xxx and 0xbxxx range, which were empirically shown to be lost after RCS reset. This way only a smaller set of affected workarounds can be applied after engine resetm, which is done with irq safe read-modify-write cycle. The series is structured like this so first two patches are as standalone as possible so it is easy (easier) to backport them. The rest of the series cleans up the whole workaround handling by moving all four classes of them to a common framework. v2: * One patch less due removing verification after engine reset. * See patch change logs. Tvrtko Ursulin (7): drm/i915: Record GT workarounds in a list drm/i915: Introduce per-engine workarounds drm/i915: Verify GT workaround state after GPU init drm/i915/selftests: Add tests for GT and engine workaround verification drm/i915: Move register white-listing to the common workaround framework drm/i915: Fuse per-context workaround handling with the common framework drm/i915: Trim unused workaround list entries drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/i915_debugfs.c | 12 +- drivers/gpu/drm/i915/i915_drv.c | 2 + drivers/gpu/drm/i915/i915_drv.h | 17 +- drivers/gpu/drm/i915/i915_gem.c | 5 + drivers/gpu/drm/i915/i915_gem_context.c | 6 +- drivers/gpu/drm/i915/intel_engine_cs.c | 4 + drivers/gpu/drm/i915/intel_lrc.c | 5 + drivers/gpu/drm/i915/intel_ringbuffer.h | 4 + drivers/gpu/drm/i915/intel_workarounds.c | 879 +++++++++++------- drivers/gpu/drm/i915/intel_workarounds.h | 31 +- drivers/gpu/drm/i915/selftests/igt_common.c | 44 + drivers/gpu/drm/i915/selftests/igt_common.h | 15 + .../gpu/drm/i915/selftests/intel_hangcheck.c | 51 +- .../drm/i915/selftests/intel_workarounds.c | 187 +++- 15 files changed, 823 insertions(+), 440 deletions(-) create mode 100644 drivers/gpu/drm/i915/selftests/igt_common.c create mode 100644 drivers/gpu/drm/i915/selftests/igt_common.h -- 2.19.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
