kernel/linux.git/drivers/gpu/drm/xe/xe_sysctrl.c, branch v7.2-rc1Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v7.2-rc12026-04-30T06:01:45+00:00drm/xe/sysctrl: Add system controller event support2026-04-30T06:01:45+00:00Raag Jadavraag.jadav@intel.com2026-04-28T05:48:25+00:00urn:sha1:21677c5ea98ac16657c572b4a0dee6893ecda1c6
System controller reports different types of events to GFX endpoint for
different usecases, add initial support for them. This will be further
extended to service those usecases.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Mallesh Koujalagi <mallesh.koujalagi@intel.com>
Link: https://patch.msgid.link/20260428054826.1202076-3-raag.jadav@intel.com
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
drm/xe/sysctrl: Add system controller interrupt handler2026-04-30T06:01:45+00:00Raag Jadavraag.jadav@intel.com2026-04-28T05:48:24+00:00urn:sha1:a68247371b6eb33013429037b28ff713aa60fc5a
Add system controller interrupt handler which is denoted by 11th bit in
GFX master interrupt register. While at it, add worker for scheduling
system controller work.
Co-developed-by: Soham Purkait <soham.purkait@intel.com>
Signed-off-by: Soham Purkait <soham.purkait@intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Mallesh Koujalagi <mallesh.koujalagi@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>
Link: https://patch.msgid.link/20260428054826.1202076-2-raag.jadav@intel.com
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
drm/xe/xe_sysctrl: Add System Controller power management support2026-03-30T17:06:55+00:00Anoop Vijayanoop.c.vijay@intel.com2026-03-27T13:18:43+00:00urn:sha1:02eca6edcb324bc37495930c344e235a90f42d72
Add resume handling for System Controller to support system (S3/S4) and
runtime power management transitions.
On resume, restore SoC remapper configuration and mailbox interface to
re‑establish communication with firmware.
Signed-off-by: Anoop Vijay <anoop.c.vijay@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260327131837.2192929-15-anoop.c.vijay@intel.com
drm/xe/xe_sysctrl: Add System Controller mailbox communication support2026-03-30T17:06:55+00:00Anoop Vijayanoop.c.vijay@intel.com2026-03-27T13:18:42+00:00urn:sha1:1f95f618182b5c99d46378141e0fb84f09bf914b
Add mailbox communication layer required for interacting with System
Controller firmware, enabling command submission and response handling.
This patch implements command/response handling logic, including error
and timeout handling.
Signed-off-by: Anoop Vijay <anoop.c.vijay@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260327131837.2192929-14-anoop.c.vijay@intel.com
drm/xe/xe_sysctrl: Add System Controller initialization support2026-03-30T17:06:55+00:00Anoop Vijayanoop.c.vijay@intel.com2026-03-27T13:18:41+00:00urn:sha1:5ea3f0dc8f9d33adf72532b366d0b7b91dae4d7f
Add initialization and cleanup infrastructure for System Controller
subsystem and integrate it into xe device probe path.
During initialization, platform support is checked via has_sysctrl
capability flag and the mailbox region is configured through SoC
remapper interface.
Signed-off-by: Anoop Vijay <anoop.c.vijay@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260327131837.2192929-13-anoop.c.vijay@intel.com