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drm/xe: Add documentation for Xe Device Wedging

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Add documentation for Xe Device Wedging so that
file can be referenced in following patches.

Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250826063419.3022216-2-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Riana Tauro 2025-08-26 12:04:08 +05:30 committed by Rodrigo Vivi
parent 418807860e
commit 38fc73b8c7
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3 changed files with 21 additions and 0 deletions
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1
Documentation/gpu/xe/index.rst
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@ -25,5 +25,6 @@ DG2, etc is provided to prototype the driver.
xe_tile
xe_debugging
xe_devcoredump
xe_device
xe-drm-usage-stats.rst
xe_configfs

10
Documentation/gpu/xe/xe_device.rst Normal file
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@ -0,0 +1,10 @@
.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
.. _xe-device-wedging:
==================
Xe Device Wedging
==================
.. kernel-doc:: drivers/gpu/drm/xe/xe_device.c
:doc: Xe Device Wedging

10
drivers/gpu/drm/xe/xe_device.c
View File

@ -1166,6 +1166,16 @@ static void xe_device_wedged_fini(struct drm_device *drm, void *arg)
xe_pm_runtime_put(xe);
}
/**
* DOC: Xe Device Wedging
*
* Xe driver uses drm device wedged uevent as documented in Documentation/gpu/drm-uapi.rst.
* When device is in wedged state, every IOCTL will be blocked and GT cannot be
* used. Certain critical errors like gt reset failure, firmware failures can cause
* the device to be wedged. The default recovery method for a wedged state
* is rebind/bus-reset.
*/
/**
* xe_device_declare_wedged - Declare device wedged
* @xe: xe device instance