[PATCH v2 0/5] drm/xe: Create and use XE_DEVICE_WA infrastructure

[Matt Atwood]

There currently is not a way to apply and track workarounds that are
needed ahead of GT init. This series adds a bit field to the xe_device
structure similar to those in the GT structures to apply and track
workarounds applied at runtime (oobs).

Device workarounds in this new infrastructure are tracked in the
existing sysfs entries in gtX/workarounds.

Currently 15015404425 is the only workaround like this, so move it to
using this new infrastructure.

PTL A0 is impacted by 15015404425, but only applies to Compute Die A0
stepping. The reality of modern platforms is that we're a Multi Chip
Package with logic spread acress multiple dies. This information not
being readily available during PCI probe without a read makes this more
complicated.

Apply 15015404425 to PTL unconditionally during PCI probe (and GT init).
After GT init use the Media GT stepping to determine if we can disable
this workaround.

v2: Change naming from SoC to device, address styling issues, update
commit messages

Matt Atwood (5):
  drm/xe: add xe_device_wa infrastructure
  drm/xe: Add infrastructure for Device OOB workarounds
  drm/xe: Move Wa_15015404425 to use the new EX_DEVICE_WA macro
  drm/xe: extend Wa_15015404425 to apply to PTL
  drm/xe: disable wa_15015404425 for PTL B0

 drivers/gpu/drm/xe/Makefile               | 11 +++++-
 drivers/gpu/drm/xe/xe_device_types.h      |  9 +++++
 drivers/gpu/drm/xe/xe_device_wa_oob.rules |  2 +
 drivers/gpu/drm/xe/xe_gen_wa_oob.c        | 27 +++++++++----
 drivers/gpu/drm/xe/xe_mmio.c              | 10 ++---
 drivers/gpu/drm/xe/xe_pci.c               | 11 ++++++
 drivers/gpu/drm/xe/xe_rtp.c               |  5 +++
 drivers/gpu/drm/xe/xe_rtp.h               |  3 +-
 drivers/gpu/drm/xe/xe_rtp_types.h         |  2 +
 drivers/gpu/drm/xe/xe_wa.c                | 46 +++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_wa.h                | 18 +++++++--
 drivers/gpu/drm/xe/xe_wa_oob.rules        |  1 +
 12 files changed, 127 insertions(+), 18 deletions(-)
 create mode 100644 drivers/gpu/drm/xe/xe_device_wa_oob.rules

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2.49.0