[v4,00/12] i915 TTM sync accelerated migration and clear

Message

Thomas Hellström June 15, 2021, 1:14 p.m. UTC

This patchset implements synchronous accelerated migration and clearing
for i915 on TTM. We plan to follow up with these operations made
asynchronous to the extent of TTM support for that:

A couple of patches from Chris which implement pipelined migration and
clears by atomically writing the PTEs in place before performing the
actual blit.

Some ww utilities mainly for the accompanying selftests added by Thomas,
as well as modified the above patches for ww locking- and lmem support.

Hooked up to our TTM backend by Ramalingam

Finally, on request from Daniel, we ditch old blit code which is now obsolete.

v2:
- A couple of minor style fixes pointed out by Matthew Auld
- Export and use intel_engine_destroy_pinned_context() to address a
  CI warning / failure.
v3:
- Acceleration hooked up to TTM
- Minor fixes to review comments (Pointed out by Matthew Auld)
- Fix pipelined blit handling of engine instances (Pointed out by Matthew Auld)
- Ditch old blit code, (Pointed out by Daniel)
v4:
- Rescue a selftest that was removed with the old blit code
  (Pointed out by Matthew Auld)
- Extended gpu waits in the TTM accel move function
  (Pointed out by Thomas Hellström)

Chris Wilson (6):
  drm/i915/gt: Add an insert_entry for gen8_ppgtt
  drm/i915/gt: Add a routine to iterate over the pagetables of a GTT
  drm/i915/gt: Export the pinned context constructor and destructor
  drm/i915/gt: Pipelined page migration
  drm/i915/gt: Pipelined clear
  drm/i915/gt: Setup a default migration context on the GT

Ramalingam C (1):
  drm/i915/ttm: accelerated move implementation

Thomas Hellström (5):
  drm/i915: Reference objects on the ww object list
  drm/i915: Break out dma_resv ww locking utilities to separate files
  drm/i915: Introduce a ww transaction helper
  drm/i915/gem: Zap the client blt code
  drm/i915/gem: Zap the i915_gem_object_blt code

 drivers/gpu/drm/i915/Makefile                 |   5 +-
 .../gpu/drm/i915/gem/i915_gem_client_blt.c    | 355 ---------
 .../gpu/drm/i915/gem/i915_gem_client_blt.h    |  21 -
 drivers/gpu/drm/i915/gem/i915_gem_object.h    |   9 +-
 .../gpu/drm/i915/gem/i915_gem_object_blt.c    | 461 ------------
 .../gpu/drm/i915/gem/i915_gem_object_blt.h    |  39 -
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c       |  88 ++-
 .../i915/gem/selftests/i915_gem_client_blt.c  | 114 +--
 .../i915/gem/selftests/i915_gem_object_blt.c  | 597 ---------------
 drivers/gpu/drm/i915/gt/gen8_ppgtt.c          |  68 ++
 drivers/gpu/drm/i915/gt/intel_engine.h        |  12 +
 drivers/gpu/drm/i915/gt/intel_engine_cs.c     |  27 +-
 drivers/gpu/drm/i915/gt/intel_gpu_commands.h  |   2 +
 drivers/gpu/drm/i915/gt/intel_gt.c            |   4 +
 drivers/gpu/drm/i915/gt/intel_gt_types.h      |   3 +
 drivers/gpu/drm/i915/gt/intel_gtt.h           |   7 +
 drivers/gpu/drm/i915/gt/intel_migrate.c       | 687 ++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_migrate.h       |  65 ++
 drivers/gpu/drm/i915/gt/intel_migrate_types.h |  15 +
 drivers/gpu/drm/i915/gt/intel_renderstate.h   |   1 +
 drivers/gpu/drm/i915/gt/intel_ring.h          |   1 +
 drivers/gpu/drm/i915/gt/selftest_migrate.c    | 669 +++++++++++++++++
 drivers/gpu/drm/i915/i915_gem.c               |  52 --
 drivers/gpu/drm/i915/i915_gem.h               |  12 -
 drivers/gpu/drm/i915/i915_gem_ww.c            |  63 ++
 drivers/gpu/drm/i915/i915_gem_ww.h            |  50 ++
 .../drm/i915/selftests/i915_live_selftests.h  |   2 +-
 .../drm/i915/selftests/i915_perf_selftests.h  |   2 +-
 .../drm/i915/selftests/intel_memory_region.c  |  21 +-
 29 files changed, 1766 insertions(+), 1686 deletions(-)
 delete mode 100644 drivers/gpu/drm/i915/gem/i915_gem_client_blt.c
 delete mode 100644 drivers/gpu/drm/i915/gem/i915_gem_client_blt.h
 delete mode 100644 drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
 delete mode 100644 drivers/gpu/drm/i915/gem/i915_gem_object_blt.h
 delete mode 100644 drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate.h
 create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate_types.h
 create mode 100644 drivers/gpu/drm/i915/gt/selftest_migrate.c
 create mode 100644 drivers/gpu/drm/i915/i915_gem_ww.c
 create mode 100644 drivers/gpu/drm/i915/i915_gem_ww.h