| From: |
| "Michael J. Ruhl" <michael.j.ruhl-AT-intel.com> |
| To: |
| platform-driver-x86-AT-vger.kernel.org, intel-xe-AT-lists.freedesktop.org, hansg-AT-kernel.org, ilpo.jarvinen-AT-linux.intel.com, matthew.brost-AT-intel.com, rodrigo.vivi-AT-intel.com, thomas.hellstrom-AT-linux.intel.com, airlied-AT-gmail.com, simona-AT-ffwll.ch, david.e.box-AT-linux.intel.com |
| Subject: |
| [PATCH 0/5] Crescent Island PMT support |
| Date: |
| Tue, 27 Jan 2026 13:24:19 -0500 |
| Message-ID: |
| <20260127182418.640701-7-michael.j.ruhl@intel.com> |
| Cc: |
| "Michael J. Ruhl" <michael.j.ruhl-AT-intel.com> |
| Archive-link: |
| Article |
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.
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 | 257 +++++++++++++++++++---
drivers/platform/x86/intel/pmt/crashlog.c | 39 +++-
include/linux/intel_vsec.h | 26 ++-
4 files changed, 291 insertions(+), 36 deletions(-)
--
2.52.0
