[PATCH v4 0/9] Introduce Xe PCIe FLR

[Raag Jadav <raag.jadav@intel.com>]

Here's my humble attempt at introducing PCIe Function Level Reset (FLR)
support in xe driver. This is ofcourse a half baked implementation and
only limited to re-initializing GT. This needs to be extended for a lot
of different components which I've skipped here for my lack of competence,
so feel free to join in and support them.

PS: All xe_exec_basic tests and clpeak run smoothly after FLR. Give it
a spin and let me know if any regressions.

Trigger it with:

$ echo 1 > /sys/bus/pci/devices/<BDF>/reset

v2: Re-initialize migrate context (Matthew Brost)
    Add kernel doc (Matthew Brost)
    Spell out Function Level Reset (Jani)

v3: Cancel in-flight jobs before FLR

v4: Teardown exec queues instead of mangling scheduler pending list (Matthew Brost)

Raag Jadav (9):
  drm/xe/uc_fw: Allow re-initializing firmware
  drm/xe/guc_submit: Introduce xe_guc_submit_reinit()
  drm/xe/gt: Introduce FLR helpers
  drm/xe/irq: Introduce xe_irq_disable()
  drm/xe: Introduce xe_device_assert_lmem_ready()
  drm/xe/bo_evict: Introduce xe_bo_restore_map()
  drm/xe/exec_queue: Introduce xe_exec_queue_reinit()
  drm/xe/migrate: Introduce xe_migrate_reinit()
  drm/xe/pci: Introduce PCIe FLR

 drivers/gpu/drm/xe/Makefile           |   1 +
 drivers/gpu/drm/xe/xe_bo_evict.c      |  51 +++++++--
 drivers/gpu/drm/xe/xe_bo_evict.h      |   2 +
 drivers/gpu/drm/xe/xe_device.c        |  10 +-
 drivers/gpu/drm/xe/xe_device.h        |   1 +
 drivers/gpu/drm/xe/xe_exec_queue.c    |  34 +++++-
 drivers/gpu/drm/xe/xe_exec_queue.h    |   1 +
 drivers/gpu/drm/xe/xe_gpu_scheduler.h |   5 +
 drivers/gpu/drm/xe/xe_gsc.c           |  14 +++
 drivers/gpu/drm/xe/xe_gsc.h           |   1 +
 drivers/gpu/drm/xe/xe_gt.c            |  47 ++++++++
 drivers/gpu/drm/xe/xe_gt.h            |   2 +
 drivers/gpu/drm/xe/xe_gt_types.h      |   9 ++
 drivers/gpu/drm/xe/xe_guc.c           |  36 ++++++
 drivers/gpu/drm/xe/xe_guc.h           |   2 +
 drivers/gpu/drm/xe/xe_guc_submit.c    |  35 ++++++
 drivers/gpu/drm/xe/xe_guc_submit.h    |   1 +
 drivers/gpu/drm/xe/xe_huc.c           |  14 +++
 drivers/gpu/drm/xe/xe_huc.h           |   1 +
 drivers/gpu/drm/xe/xe_irq.c           |  13 ++-
 drivers/gpu/drm/xe/xe_irq.h           |   1 +
 drivers/gpu/drm/xe/xe_lrc.c           |  17 +++
 drivers/gpu/drm/xe/xe_lrc.h           |   2 +
 drivers/gpu/drm/xe/xe_migrate.c       |  12 ++
 drivers/gpu/drm/xe/xe_migrate.h       |   1 +
 drivers/gpu/drm/xe/xe_pci.c           |   1 +
 drivers/gpu/drm/xe/xe_pci.h           |   2 +
 drivers/gpu/drm/xe/xe_pci_err.c       | 151 ++++++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_uc.c            |  37 +++++++
 drivers/gpu/drm/xe/xe_uc.h            |   2 +
 drivers/gpu/drm/xe/xe_uc_fw.c         |  39 ++++++-
 drivers/gpu/drm/xe/xe_uc_fw.h         |   1 +
 32 files changed, 525 insertions(+), 21 deletions(-)
 create mode 100644 drivers/gpu/drm/xe/xe_pci_err.c

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2.43.0