Now that the necessary GuC-based hardware workarounds have landed, we're
finally ready to actually enable compute engines for use by userspace.
All of the "under-the-hood" heavy lifting already landed a while back in
other series so all that remains now is to add I915_ENGINE_CLASS_COMPUTE
to the uapi enum and add the CCS engines to the engine lists for the
Xe_HP SDV and DG2.
Userspace (Mesa) is linked in the ABI patch. Existing IGT tests (e.g.,
i915_hangman) provide test coverage for general engine behavior since compute
engines should follow the same general rules as other engines. We've also
recently added some additional subtests like
igt@gem_reset_stats@shared-reset-domain to cover the user-visible impacts of
the compute engines sharing the same hardware reset domain as the render
engine.
v2:
- Update TLB invalidation register for compute engines and move it to a
separate patch since it isn't related to the new uapi. (Tvrtko,
Prathap)
- Move new kerneldoc for pre-existing engine classes to a separate
patch. (Andi)
- Drop the compute UMD merge request link for now because it also
included some additional multi-tile uapi that we're not ready to
upstream just yet. Even if they don't have a disentangled MR ready
for reference, we still have the Mesa MR as a key userspace consumer.
(Tvrtko)
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Daniele Ceraolo Spurio (1):
drm/i915: Xe_HP SDV and DG2 have up to 4 CCS engines
Matt Roper (3):
drm/i915/uapi: Add kerneldoc for engine class enum
drm/i915/xehp: Add register for compute engine's MMIO-based TLB
invalidation
drm/i915/xehp: Add compute engine ABI
drivers/gpu/drm/i915/gt/intel_engine_user.c | 2 +-
drivers/gpu/drm/i915/gt/intel_gt.c | 1 +
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 +
drivers/gpu/drm/i915/i915_drm_client.c | 1 +
drivers/gpu/drm/i915/i915_drm_client.h | 2 +-
drivers/gpu/drm/i915/i915_pci.c | 6 +-
include/uapi/drm/i915_drm.h | 62 +++++++++++++++++++--
7 files changed, 65 insertions(+), 10 deletions(-)
--
2.35.1
