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Add get-error-threshold and set-error-threshold command support which
allows querying/setting error threshold of the counter. Threshold in RAS
context means the number of errors the hardware is expected to accumulate
before it raises them to software. This is to have a fine grained control
over error notifications that are raised by the hardware.
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>
Acked-by: Joshua Santhosh Ranjan <joshua.santosh.ranjan@intel.com>
Link: https://patch.msgid.link/20260818135304.497098-3-raag.jadav@intel.com
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Define a new netlink event 'error-event' and a new multicast group
'error-report' in drm_ras. Each event contains device name, node and
error information to identify the error triggering the event.
Add drm_ras_nl_error_event() to trigger an event from the driver.
Userspace must subscribe to 'error-report' to receive 'error-event'
notifications.
Usage:
$ sudo ynl --family drm_ras --subscribe error-report
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Zack McKevitt <zachary.mckevitt@oss.qualcomm.com>
Cc: Lijo Lazar <lijo.lazar@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://patch.msgid.link/20260810112008.1858731-5-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Introduce a new 'clear-error-counter' drm_ras command to reset the counter
value for a specific error counter of a given node.
The command is a 'do' netlink request with 'node-id' and 'error-id'
as parameters with no response payload.
Usage:
$ sudo ynl --family drm_ras --do clear-error-counter --json \
'{"node-id":1, "error-id":1}'
None
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Zack McKevitt <zachary.mckevitt@oss.qualcomm.com>
Cc: Lijo Lazar <lijo.lazar@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://patch.msgid.link/20260409073318.2909379-5-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Maxime Ripard <mripard@redhat.com>
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Introduces the DRM RAS infrastructure over generic netlink.
The new interface allows drivers to expose RAS nodes and their
associated error counters to userspace in a structured and extensible
way. Each drm_ras node can register its own set of error counters, which
are then discoverable and queryable through netlink operations. This
lays the groundwork for reporting and managing hardware error states
in a unified manner across different DRM drivers.
Currently it only supports error-counter nodes. But it can be
extended later.
The registration is also not tied to any drm node, so it can be
used by accel devices as well.
It uses the new and mandatory YAML description format stored in
Documentation/netlink/specs/. This forces a single generic netlink
family namespace for the entire drm: "drm-ras".
But multiple-endpoints are supported within the single family.
Any modification to this API needs to be applied to
Documentation/netlink/specs/drm_ras.yaml before regenerating the
code:
$ tools/net/ynl/pyynl/ynl_gen_c.py --spec \
Documentation/netlink/specs/drm_ras.yaml --mode uapi --header \
-o include/uapi/drm/drm_ras.h
$ tools/net/ynl/pyynl/ynl_gen_c.py --spec \
Documentation/netlink/specs/drm_ras.yaml --mode kernel \
--header -o drivers/gpu/drm/drm_ras_nl.h
$ tools/net/ynl/pyynl/ynl_gen_c.py --spec \
Documentation/netlink/specs/drm_ras.yaml \
--mode kernel --source -o drivers/gpu/drm/drm_ras_nl.c
Cc: Zack McKevitt <zachary.mckevitt@oss.qualcomm.com>
Cc: Lijo Lazar <lijo.lazar@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: netdev@vger.kernel.org
Co-developed-by: Aravind Iddamsetty <aravind.iddamsetty@linux.intel.com>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@linux.intel.com>
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Zack McKevitt <zachary.mckevitt@oss.qualcomm.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/20260304074412.464435-8-riana.tauro@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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