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* [PATCH v2 0/5]  Crescent Island PMT support
@ 2026-01-30 13:36 Michael J. Ruhl
  2026-01-30 13:36 ` [PATCH v2 1/5] pmt: Add register access callbacks Michael J. Ruhl
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: Michael J. Ruhl @ 2026-01-30 13:36 UTC (permalink / raw)
  To: platform-driver-x86, intel-xe, hansg, ilpo.jarvinen,
	matthew.brost, rodrigo.vivi, thomas.hellstrom, airlied, simona,
	david.e.box
  Cc: Michael J. Ruhl

The Crescent Island (CRI) GPU supports PMT from the via Xe driver
registration.

The CRI PMT MMIO mapping is shared for each PMT feature and it is
necessary to set an index register value to access the correct memory
space.

The PMT driver has a callback infrastructure to access data areas with
driver specific access. It is does not support the PMT control access.

CRI discovery/control spaces are part of the access window so a driver
callback is necessary to allow for the correct window to be exposed.

Add control path callback support to the PMT driver.

Add CRI PMT discovery information.

Update the Xe driver to support the CRI PMT access.

The crashlog access needs to be done with power enabled (telem is only
available when the device is powered).

Determine which access is requested, and do the appropriate power
request.

v2:
 - clean up commit messages (reflow and content)
 - remove debug usage of __func__
 - addressed kernel-doc issue
 - clean up some added lines 

Michael J. Ruhl (5):
  pmt: Add register access callbacks
  drm/xe/vsec: Use correct pm state get
  drm/xe/vsec: Support Crescent Island PMT
  drm/xe/vsec: Crescent Island PMT decode
  drm/xe/vsec: Crescent Island PMT callbacks

 drivers/gpu/drm/xe/regs/xe_pmt.h          |   5 +
 drivers/gpu/drm/xe/xe_vsec.c              | 255 +++++++++++++++++++---
 drivers/platform/x86/intel/pmt/crashlog.c |  39 +++-
 include/linux/intel_vsec.h                |  26 ++-
 4 files changed, 289 insertions(+), 36 deletions(-)

-- 
2.52.0


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2026-01-30 14:24 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-01-30 13:36 [PATCH v2 0/5] Crescent Island PMT support Michael J. Ruhl
2026-01-30 13:36 ` [PATCH v2 1/5] pmt: Add register access callbacks Michael J. Ruhl
2026-01-30 13:36 ` [PATCH v2 2/5] drm/xe/vsec: Use correct pm state get Michael J. Ruhl
2026-01-30 13:36 ` [PATCH v2 3/5] drm/xe/vsec: Support Crescent Island PMT Michael J. Ruhl
2026-01-30 13:36 ` [PATCH v2 4/5] drm/xe/vsec: Crescent Island PMT decode Michael J. Ruhl
2026-01-30 13:36 ` [PATCH v2 5/5] drm/xe/vsec: Crescent Island PMT callbacks Michael J. Ruhl
2026-01-30 13:48 ` ✓ CI.KUnit: success for Crescent Island PMT support (rev2) Patchwork
2026-01-30 14:24 ` ✓ Xe.CI.BAT: " Patchwork

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