[Intel-gfx] [PATCH 00/14] Preemption with GuC, third attempt

[Michał Winiarski]

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