It turns out that preempt failures were caused by GuC not expecting multiple
workitems when preempt action was requested.
Another thing that deserves attention is the workaround for missing
USER_INTERRUPT. The value I've used for the delayed work timer is just a
semi-educated guess at this point.
There's also small oneline doorbell cleanup (we weren't observing any problems
with it, but Sagar pointed out that doorbell cookie with value 0 seems to be
reserved), and removal of unused variable (pointed out by Michel)
Dave Gordon (1):
drm/i915/guc: Add a second client, to be used for preemption
Michał Winiarski (13):
drm/i915/guc: Do not use 0 for GuC doorbell cookie
drm/i915/guc: Extract GuC stage desc pool creation into a helper
drm/i915/guc: Allocate separate shared data object for GuC
communication
drm/i915/guc: Initialize GuC before restarting engines
drm/i915/guc: Add preemption action to GuC firmware interface
drm/i915/guc: Split guc_wq_item_append
drm/i915: Extract "emit write" part of emit breadcrumb functions
drm/i915: Add information needed to track engine preempt state
drm/i915/guc: Keep request->priority for its lifetime
drm/i915: Rename helpers used for unwinding, use macro for can_preempt
drm/i915/guc: Preemption! With GuC
drm/i915/guc: Workaround the missing user interrupt after preemption
HAX Enable GuC Submission for CI
drivers/gpu/drm/i915/i915_debugfs.c | 11 +-
drivers/gpu/drm/i915/i915_drv.c | 5 +-
drivers/gpu/drm/i915/i915_drv.h | 2 +
drivers/gpu/drm/i915/i915_gem.c | 20 +-
drivers/gpu/drm/i915/i915_gem_gtt.c | 8 +-
drivers/gpu/drm/i915/i915_guc_submission.c | 511 +++++++++++++++++++++++------
drivers/gpu/drm/i915/i915_params.h | 4 +-
drivers/gpu/drm/i915/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/intel_guc.c | 14 +-
drivers/gpu/drm/i915/intel_guc.h | 20 +-
drivers/gpu/drm/i915/intel_guc_fwif.h | 40 +++
drivers/gpu/drm/i915/intel_lrc.c | 56 ++--
drivers/gpu/drm/i915/intel_lrc.h | 1 -
drivers/gpu/drm/i915/intel_ringbuffer.h | 53 +++
drivers/gpu/drm/i915/intel_uncore.c | 2 +-
15 files changed, 575 insertions(+), 178 deletions(-)
--
2.13.6
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