[PATCH v7 00/24] AuxCCS handling and render compression modifiers

[Tvrtko Ursulin]

A series to fix and add xe support for AuxCSS framebuffers via DPT.

Currently the auxiliary buffer data isn't mapped into the page tables at all so
cf48bddd31de ("drm/i915/display: Disable AuxCCS framebuffers if built for Xe")
had to disable the support.

On top of that there are missing flushes, invalidations and similar.

Tested with KDE Wayland, on Lenovo Carbon X1 ADL-P:

  [PLANE:32:plane 1A]: type=PRI
          uapi: [FB:242] AR30 little-endian (0x30335241),0x100000000000008,2880x1800, visible=visible, src=2880.000000x1800.000000+0.000000+0.000000, dst=2880x1800+0+0, rotation=0 (0x00000001)
          hw: [FB:242] AR30 little-endian (0x30335241),0x100000000000008,2880x1800, visible=yes, src=2880.000000x1800.000000+0.000000+0.000000, dst=2880x1800+0+0, rotation=0 (0x00000001)

Display working fine - no artefacts, no DMAR/PIPE faults.

*** NOTE ***
 The first 8 patches are not really the AuxCCS work. They are a different series
 which adds plumbing for the indirect context workarounds, hence the AuxCCS work
 depends on it.

 For strictly AuxCCS work you can start reading from patch 9.
*** NOTE ***

v2:
 * More patches added to fix kms_flip_tiling.

v3:
 * Rebased after some cleanup patches from v2 were merged.
 * Added people to Cc as suggested by Rodrigo.
 * Adjusted last patch title. (Rodrigo)
 * Apply GGTT flushing only to iomapped system memory buffers.

v4:
 * Added patch for potentially misplaced Wa_14016712196.
 * Fixed (hopefully) MAX_JOB_SIZE_DW on Meteorlake.

v5:
 * Split out ring emission changes to smaller patches.
 * Fixed MAX_JOB_SIZE_DW even more.
 * Don't emit MI_FLUSH_DW_CCS on !BCS. This should fix Meteorlake.

 v6:
 * Added AuxCCS invalidation to indirect context workarounds.
 * Also added the indirect context handling and some other workarounds. They are
   unrelated but the series depends on it.
 * Dropped DPT pin alignment reduction since BMG appears not to be liking it for
   some reason.

v7:
 * Rebased on top of recent xe_fb_pin.c refactoring and also the indirect
   context workarounds series.

Tvrtko Ursulin (24):
  drm/xe: Consolidate LRC offset calculations
  drm/xe: Generalize wa bb emission code
  drm/xe: Rename utilisation workaround emission function
  drm/xe: Return number of written dwords from workaround batch buffer
    emission
  drm/xe: Allow specifying number of extra dwords at the end of wa bb
    emission
  drm/xe: Add plumbing for indirect context workarounds
  drm/xe/xelp: Implement Wa_16010904313
  drm/xe/xelp: Add Wa_18022495364
  drm/xe: Use emit_flush_imm_ggtt helper instead of open coding
  drm/xe/xelpg: Flush CCS when flushing caches
  drm/xe: Flush L3 when flushing render cache
  drm/xe/xelp: Quiesce memory traffic before invalidating auxccs
  drm/xe/xelp: Support auxccs invalidation on blitter
  drm/xe/xelp: Use MI_FLUSH_DW_CCS on auxccs platforms
  drm/xe/xelp: Wait for AuxCCS invalidation to complete
  drm/xe/xelp: Add AuxCCS invalidation to the buffer migration path
  drm/xe: Export xe_emit_aux_table_inv
  drm/xe/xelp: Add AuxCCS invalidation to the indirect context
    workarounds
  drm/xe: Use fb cached min alignment
  drm/xe: Flush GGTT writes after populating DPT
  drm/xe: Handle DPT in system memory
  drm/xe: Force flush system memory AuxCCS framebuffers before scan out
  drm/xe/display: Add support for AuxCCS
  drm/i915/display: Expose AuxCCS frame buffer modifiers for Xe

 .../drm/i915/display/skl_universal_plane.c    |   6 -
 drivers/gpu/drm/xe/display/xe_fb_pin.c        | 177 ++++++++--
 .../gpu/drm/xe/instructions/xe_gpu_commands.h |   2 +
 .../gpu/drm/xe/instructions/xe_mi_commands.h  |   7 +
 drivers/gpu/drm/xe/regs/xe_engine_regs.h      |   3 +
 drivers/gpu/drm/xe/regs/xe_gt_regs.h          |   1 +
 drivers/gpu/drm/xe/regs/xe_lrc_layout.h       |   4 +
 drivers/gpu/drm/xe/xe_bo_types.h              |  14 +-
 drivers/gpu/drm/xe/xe_lrc.c                   | 317 +++++++++++++++---
 drivers/gpu/drm/xe/xe_lrc_types.h             |   5 +-
 drivers/gpu/drm/xe/xe_ring_ops.c              | 210 +++++++-----
 drivers/gpu/drm/xe/xe_ring_ops.h              |   3 +
 drivers/gpu/drm/xe/xe_ring_ops_types.h        |   2 +-
 drivers/gpu/drm/xe/xe_wa_oob.rules            |   2 +
 14 files changed, 571 insertions(+), 182 deletions(-)

-- 
2.48.0