Daniel Vetter pointed out that locking in the GuC submission code was overly complicated, let's clean this up a bit before introducing more features in the GuC submission backend.
Also fix some CI failures, port fixes from our internal tree, and add a few more selftests for coverage.
Lastly, add some kernel DOC explaining how the GuC submission backend works.
v2: Fix logic error in 'Workaround reset G2H is received after schedule done G2H', don't propagate errors to dependent fences in execlists submissiom, resolve checkpatch issues, resend to correct lists v3: Fix issue kicking tasklet, drop guc_active, fix ref counting in xarray, add guc_id sub structure, drop inline fuctions, and various other cleanup suggested by Daniel v4: Address Daniele's feedback, rebase to tip, resend for CI v5 [Daniele taking over while Matt is out]: drop patches 8 and 27 for now (not critical, Matt will update and resend when he's back), address review comments, improve kerneldoc. Also move all code related to busy loop to patch 2 so we have a standalone fix. v6: Drop allocate of error capture in nowait context, drop flushing of work queue (will get respun individually).
Signed-off-by: Matthew Brost matthew.brost@intel.com Signed-off-by: Daniele Ceraolo Spurio daniele.ceraolospurio@intel.com #v5
Matthew Brost (23): drm/i915/guc: Fix blocked context accounting drm/i915/guc: Fix outstanding G2H accounting drm/i915/guc: Unwind context requests in reverse order drm/i915/guc: Don't drop ce->guc_active.lock when unwinding context drm/i915/guc: Process all G2H message at once in work queue drm/i915/guc: Workaround reset G2H is received after schedule done G2H Revert "drm/i915/gt: Propagate change in error status to children on unhold" drm/i915/guc: Kick tasklet after queuing a request drm/i915/guc: Don't enable scheduling on a banned context, guc_id invalid, not registered drm/i915/guc: Copy whole golden context, set engine state size of subset drm/i915/selftests: Add initial GuC selftest for scrubbing lost G2H drm/i915/guc: Take context ref when cancelling request drm/i915/guc: Don't touch guc_state.sched_state without a lock drm/i915/guc: Reset LRC descriptor if register returns -ENODEV drm/i915/guc: Release submit fence from an irq_work drm/i915/guc: Move guc_blocked fence to struct guc_state drm/i915/guc: Rework and simplify locking drm/i915/guc: Proper xarray usage for contexts_lookup drm/i915/guc: Drop pin count check trick between sched_disable and re-pin drm/i915/guc: Move GuC priority fields in context under guc_active drm/i915/guc: Move fields protected by guc->contexts_lock into sub structure drm/i915/guc: Drop guc_active move everything into guc_state drm/i915/guc: Add GuC kernel doc
Documentation/gpu/i915.rst | 2 + drivers/gpu/drm/i915/gt/intel_context.c | 19 +- drivers/gpu/drm/i915/gt/intel_context_types.h | 80 +- .../drm/i915/gt/intel_execlists_submission.c | 4 - drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 6 +- drivers/gpu/drm/i915/gt/uc/intel_guc.h | 75 +- drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 26 +- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 6 +- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 904 +++++++++++------- drivers/gpu/drm/i915/gt/uc/selftest_guc.c | 127 +++ drivers/gpu/drm/i915/i915_request.h | 26 +- drivers/gpu/drm/i915/i915_trace.h | 12 +- .../drm/i915/selftests/i915_live_selftests.h | 1 + .../i915/selftests/intel_scheduler_helpers.c | 12 + .../i915/selftests/intel_scheduler_helpers.h | 2 + 15 files changed, 872 insertions(+), 430 deletions(-) create mode 100644 drivers/gpu/drm/i915/gt/uc/selftest_guc.c