[PATCH v4 0/4] Split GuC ID space into usable and shareable pools

["Piórkowski, Piotr" <piotr.piorkowski@intel.com>]

From: Piotr Piórkowski <piotr.piorkowski@intel.com>

The GuC ID manager currently treats all GuC IDs as a single pool shared
between GuC submission and SR-IOV related allocations.

This series introduces explicit separation between IDs that can be used
for GuC submission and IDs that can be shared with VFs. The ID manager
gains support for independent usable and shareable pools, dedicated
allocation interfaces, pool-specific accounting and validation, and
extended test coverage.

To preserve existing behaviour, both pools continue to map onto the same
GuC ID space where appropriate. GuC submission is updated to explicitly
allocate IDs from the usable pool, while ID manager initialization is
adapted to expose the correct ID ranges for native, PF and VF operating
modes.

v1 -> v2:
 - Fix issues reported by Sashiko (top-down VF ID search, KUNIT_EXPECT in
   locked sections, xe_root_mmio_gt() for the primary GT).
v2 -> v3:
 - Guard failed ID reservations before releasing test allocations.
 - Fix shareable spare quota accounting to include PF-exclusive usable IDs.
 - Skip some tests required PF mode if there is not CONFIG_PCI_IOV
 - Some minor other changes
v3 -> v4:
 - Avoid releasing unreserved ID ranges after failed test reservations.

Piotr Piórkowski (4):
  drm/xe/guc: Split GuC ID manager into usable and shareable pools
  drm/xe/kunit: Extend GuC ID manager split-pool coverage
  drm/xe/guc: Start use explicitly usable GuC IDs for for submission
  drm/xe/pf: Explicitly use shareable GuC IDs for VFs provisioning

 .../xe/tests/xe_gt_sriov_pf_config_kunit.c    |   5 +
 drivers/gpu/drm/xe/tests/xe_guc_id_mgr_test.c | 665 +++++++++++++++++-
 drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c    |  22 +-
 drivers/gpu/drm/xe/xe_guc.c                   |   4 +-
 drivers/gpu/drm/xe/xe_guc_id_mgr.c            | 458 +++++++++---
 drivers/gpu/drm/xe/xe_guc_id_mgr.h            |  31 +-
 drivers/gpu/drm/xe/xe_guc_submit.c            |  27 +-
 drivers/gpu/drm/xe/xe_guc_submit.h            |   2 +-
 drivers/gpu/drm/xe/xe_guc_types.h             |   8 +-
 9 files changed, 1066 insertions(+), 156 deletions(-)

-- 
2.34.1