Re: [PATCH v11 0/7] drm/i915: Define and use GuC and CTB TLB invalidation routines

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On 11/10/2023 01:02, Jonathan Cavitt wrote:
Implement GuC-based TLB invalidations and use them on MTL.

Some complexity in the implementation was introduced early on
and will be required for range-based TLB invalidations.
RFC: https://patchwork.freedesktop.org/series/124922/

Thanks for demonstrating the need with an RFC again.

If there are outstanding review comments of course address those, check BAT and all but otherwise I am happy.

Acked-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko


v2:
- Add missing supporting patches.

v3:
- Split suspend/resume changes and multi-gt support into separate
   patches.
- Only perform GuC TLB invalidation functions when supported.
- Move intel_guc_is_enabled check function to usage location.
- Address comments.

v4:
- Change conditions for GuC-based tlb invalidation support
   to a pci tag that's only active for MTL.
- Address some FIXMEs and formatting issues.
- Move suspend/resume changes to helper functions in intel_gt.h
- Improve comment for ct_handle_event change.
- Use cleaner if-else conditions.
- Address comments.

v5:
- Reintroduce missing change to selftest msleep duration
- Move suspend/resume loops from intel_gt.h to intel_tlb.c,
   making them no longer static inlines.
- Remove superfluous blocking and error checks.
- Move ct_handle_event exception to general case in
   ct_process_request.
- Explain usage of xa_alloc_cyclic_irq.
- Modify explanation of purpose of
   OUTSTANDING_GUC_TIMEOUT_PERIOD macro.
- Explain purpose of performing tlb invalidation twice in
   intel_gt_tlb_resume_all.

v6:
- Add this cover letter.
- Fix explanation of purpose of
   OUTSTANDING_GUC_TIMEOUT_PERIOD macro again.
- s/pci tags/pci flags
- Enable GuC TLB Invalidations separately from adding the
   flags to do so.

v7:
- Eliminate pci terminology from patches.
- Order new device info flag correctly.
- Run gen8_ggtt_invalidate in more cases, specifically when
   GuC-based TLB invalidation is not supported.
- Use intel_uncore_write_fw instead of intel_uncore_write
   during guc_ggtt_invalidate.
- Remove duplicate request message clear in ct_process_request.
- Remove faulty tag from series.

v8:
- Simplify cover letter contents.
- Fix miscellaneous formatting and typos.
- Reorder device info flags and defines.
- Reword commit message.
- Rename TLB invalidation enums and functions.
- Add comments explaining confusing points.
- Add helper function getting expected delay of CT buffer.
- Simplify intel_guc_tlb_invalidation_done by passing computed
   values.
- Remove helper functions for tlb suspend and resume.
- Move tlb suspend and resume paths to uc.
- Split suspend/resume and wedged into two patches.
- Clarify purpose of sleep change in tlb selftest.

v9:
- Explain complexity of GuC TLB invalidations as required for
   range-based TLB invalidations, which will be platformed later.
- Fix CHECKPATCH issues.
- Explain intel_guc_is_ready tlb invalidation skip in
   intel_gt_invalidate_tlb_full.
- Reword comment for unlocked xa_for_each loop in
   intel_guc_submission_reset.
- Report all errors in init_tlb_lookup.
- Remove debug message from fini_tlb_lookup.
- Use standardized interface for
   intel_guc_tlb_invalidation_done
- Remove spurious changes.
- Move wake_up_all_tlb_invalidate on wedge to correct patch.

v10:
- Add lock to tlb_lookup on guc submission reset.
- Add comment about why timeout increased from 10 ms to 20 ms
   by default in gt_tlb selftest.
- Remove spurious changes.

v11:
- Update CT size delay helper to be clearer.
- Reorder some function declarations.
- Clarify some comments.
- Produce error message if attempting to free a busy wait
   during fini_tlb_lookup.
- Revert default sleep back to 10 ms.
- Link to RFC.

Jonathan Cavitt (6):
   drm/i915: Add GuC TLB Invalidation device info flags
   drm/i915/guc: Add CT size delay helper
   drm/i915: No TLB invalidation on suspended GT
   drm/i915: No TLB invalidation on wedged GT
   drm/i915/gt: Increase sleep in gt_tlb selftest sanitycheck
   drm/i915: Enable GuC TLB invalidations for MTL

Prathap Kumar Valsan (1):
   drm/i915: Define and use GuC and CTB TLB invalidation routines

  drivers/gpu/drm/i915/gt/intel_ggtt.c          |  34 ++-
  drivers/gpu/drm/i915/gt/intel_tlb.c           |  16 +-
  drivers/gpu/drm/i915/gt/selftest_tlb.c        |  11 +-
  .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h  |  33 +++
  drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  22 ++
  drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c     |  31 +++
  drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h     |   2 +
  drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h   |   1 +
  .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 211 +++++++++++++++++-
  drivers/gpu/drm/i915/gt/uc/intel_uc.c         |   7 +
  drivers/gpu/drm/i915/i915_drv.h               |   2 +
  drivers/gpu/drm/i915/i915_pci.c               |   1 +
  drivers/gpu/drm/i915/intel_device_info.h      |   1 +
  13 files changed, 358 insertions(+), 14 deletions(-)




[Index of Archives]     [AMD Graphics]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux