[RFC 0/5] Proposal to use netlink for RAS and Telemetry across drm subsystem
Aravind Iddamsetty
aravind.iddamsetty at intel.com
Fri May 26 16:20:11 UTC 2023
Our hardware supports RAS(Reliability, Availability, Serviceability) by
exposing a set of error counters which can be used by observability
tools to take corrective actions or repairs. Traditionally there were
being exposed via PMU (for relative counters) and sysfs interface (for
absolute value) in our internal branch. But, due to the limitations in
this approach to use two interfaces and also not able to have an event
based reporting or configurability, an alternative approach to try
netlink was suggested by community for drm subsystem wide UAPI for RAS
and telemetry as discussed in [1].
This [1] is the inspiration to this series. It uses the generic
netlink(genl) family subsystem and exposes a set of commands that can
be used by every drm driver, the framework provides a means to have
custom commands too. Each drm driver instance in this example xe driver
instance registers a family and operations to the genl subsystem through
which it enumerates and reports the error counters. An event based
notification is also supported to which userpace can subscribe to and
be notified when any error occurs and read the error counter this avoids
continuous polling on error counter. This can also be extended to
threshold based notification.
[1]: https://airlied.blogspot.com/2022/09/accelerators-bof-outcomes-summary.html
this series is on top of https://patchwork.freedesktop.org/series/116181/
Below is an example tool drm_ras which demonstrates the use of the
supported commands. The tool will be sent to ML with the subject
"[RFC i-g-t 0/1] A tool to demonstrate use of netlink sockets to read RAS error counters"
read single error counter:
$ ./drm_ras READ_ONE --device=drm:/dev/dri/card1 --error_id=0x0000000000000005
counter value 0
read all error counters:
$ ./drm_ras READ_ALL --device=drm:/dev/dri/card1
name config-id counter
error-gt0-correctable-guc 0x0000000000000001 0
error-gt0-correctable-slm 0x0000000000000003 0
error-gt0-correctable-eu-ic 0x0000000000000004 0
error-gt0-correctable-eu-grf 0x0000000000000005 0
error-gt0-fatal-guc 0x0000000000000009 0
error-gt0-fatal-slm 0x000000000000000d 0
error-gt0-fatal-eu-grf 0x000000000000000f 0
error-gt0-fatal-fpu 0x0000000000000010 0
error-gt0-fatal-tlb 0x0000000000000011 0
error-gt0-fatal-l3-fabric 0x0000000000000012 0
error-gt0-correctable-subslice 0x0000000000000013 0
error-gt0-correctable-l3bank 0x0000000000000014 0
error-gt0-fatal-subslice 0x0000000000000015 0
error-gt0-fatal-l3bank 0x0000000000000016 0
error-gt0-sgunit-correctable 0x0000000000000017 0
error-gt0-sgunit-nonfatal 0x0000000000000018 0
error-gt0-sgunit-fatal 0x0000000000000019 0
error-gt0-soc-fatal-psf-csc-0 0x000000000000001a 0
error-gt0-soc-fatal-psf-csc-1 0x000000000000001b 0
error-gt0-soc-fatal-psf-csc-2 0x000000000000001c 0
error-gt0-soc-fatal-punit 0x000000000000001d 0
error-gt0-soc-fatal-psf-0 0x000000000000001e 0
error-gt0-soc-fatal-psf-1 0x000000000000001f 0
error-gt0-soc-fatal-psf-2 0x0000000000000020 0
error-gt0-soc-fatal-cd0 0x0000000000000021 0
error-gt0-soc-fatal-cd0-mdfi 0x0000000000000022 0
error-gt0-soc-fatal-mdfi-east 0x0000000000000023 0
error-gt0-soc-fatal-mdfi-south 0x0000000000000024 0
error-gt0-soc-fatal-hbm-ss0-0 0x0000000000000025 0
error-gt0-soc-fatal-hbm-ss0-1 0x0000000000000026 0
error-gt0-soc-fatal-hbm-ss0-2 0x0000000000000027 0
error-gt0-soc-fatal-hbm-ss0-3 0x0000000000000028 0
error-gt0-soc-fatal-hbm-ss0-4 0x0000000000000029 0
error-gt0-soc-fatal-hbm-ss0-5 0x000000000000002a 0
error-gt0-soc-fatal-hbm-ss0-6 0x000000000000002b 0
error-gt0-soc-fatal-hbm-ss0-7 0x000000000000002c 0
error-gt0-soc-fatal-hbm-ss1-0 0x000000000000002d 0
error-gt0-soc-fatal-hbm-ss1-1 0x000000000000002e 0
error-gt0-soc-fatal-hbm-ss1-2 0x000000000000002f 0
error-gt0-soc-fatal-hbm-ss1-3 0x0000000000000030 0
error-gt0-soc-fatal-hbm-ss1-4 0x0000000000000031 0
error-gt0-soc-fatal-hbm-ss1-5 0x0000000000000032 0
error-gt0-soc-fatal-hbm-ss1-6 0x0000000000000033 0
error-gt0-soc-fatal-hbm-ss1-7 0x0000000000000034 0
error-gt0-soc-fatal-hbm-ss2-0 0x0000000000000035 0
error-gt0-soc-fatal-hbm-ss2-1 0x0000000000000036 0
error-gt0-soc-fatal-hbm-ss2-2 0x0000000000000037 0
error-gt0-soc-fatal-hbm-ss2-3 0x0000000000000038 0
error-gt0-soc-fatal-hbm-ss2-4 0x0000000000000039 0
error-gt0-soc-fatal-hbm-ss2-5 0x000000000000003a 0
error-gt0-soc-fatal-hbm-ss2-6 0x000000000000003b 0
error-gt0-soc-fatal-hbm-ss2-7 0x000000000000003c 0
error-gt0-soc-fatal-hbm-ss3-0 0x000000000000003d 0
error-gt0-soc-fatal-hbm-ss3-1 0x000000000000003e 0
error-gt0-soc-fatal-hbm-ss3-2 0x000000000000003f 0
error-gt0-soc-fatal-hbm-ss3-3 0x0000000000000040 0
error-gt0-soc-fatal-hbm-ss3-4 0x0000000000000041 0
error-gt0-soc-fatal-hbm-ss3-5 0x0000000000000042 0
error-gt0-soc-fatal-hbm-ss3-6 0x0000000000000043 0
error-gt0-soc-fatal-hbm-ss3-7 0x0000000000000044 0
error-gt0-gsc-correctable-sram-ecc 0x0000000000000045 0
error-gt0-gsc-nonfatal-mia-shutdown 0x0000000000000046 0
error-gt0-gsc-nonfatal-mia-int 0x0000000000000047 0
error-gt0-gsc-nonfatal-sram-ecc 0x0000000000000048 0
error-gt0-gsc-nonfatal-wdg-timeout 0x0000000000000049 0
error-gt0-gsc-nonfatal-rom-parity 0x000000000000004a 0
error-gt0-gsc-nonfatal-ucode-parity 0x000000000000004b 0
error-gt0-gsc-nonfatal-glitch-det 0x000000000000004c 0
error-gt0-gsc-nonfatal-fuse-pull 0x000000000000004d 0
error-gt0-gsc-nonfatal-fuse-crc-check 0x000000000000004e 0
error-gt0-gsc-nonfatal-selfmbist 0x000000000000004f 0
error-gt0-gsc-nonfatal-aon-parity 0x0000000000000050 0
error-gt1-correctable-guc 0x1000000000000001 0
error-gt1-correctable-slm 0x1000000000000003 0
error-gt1-correctable-eu-ic 0x1000000000000004 0
error-gt1-correctable-eu-grf 0x1000000000000005 0
error-gt1-fatal-guc 0x1000000000000009 0
error-gt1-fatal-slm 0x100000000000000d 0
error-gt1-fatal-eu-grf 0x100000000000000f 0
error-gt1-fatal-fpu 0x1000000000000010 0
error-gt1-fatal-tlb 0x1000000000000011 0
error-gt1-fatal-l3-fabric 0x1000000000000012 0
error-gt1-correctable-subslice 0x1000000000000013 0
error-gt1-correctable-l3bank 0x1000000000000014 0
error-gt1-fatal-subslice 0x1000000000000015 0
error-gt1-fatal-l3bank 0x1000000000000016 0
error-gt1-sgunit-correctable 0x1000000000000017 0
error-gt1-sgunit-nonfatal 0x1000000000000018 0
error-gt1-sgunit-fatal 0x1000000000000019 0
error-gt1-soc-fatal-psf-csc-0 0x100000000000001a 0
error-gt1-soc-fatal-psf-csc-1 0x100000000000001b 0
error-gt1-soc-fatal-psf-csc-2 0x100000000000001c 0
error-gt1-soc-fatal-punit 0x100000000000001d 0
error-gt1-soc-fatal-psf-0 0x100000000000001e 0
error-gt1-soc-fatal-psf-1 0x100000000000001f 0
error-gt1-soc-fatal-psf-2 0x1000000000000020 0
error-gt1-soc-fatal-cd0 0x1000000000000021 0
error-gt1-soc-fatal-cd0-mdfi 0x1000000000000022 0
error-gt1-soc-fatal-mdfi-east 0x1000000000000023 0
error-gt1-soc-fatal-mdfi-south 0x1000000000000024 0
error-gt1-soc-fatal-hbm-ss0-0 0x1000000000000025 0
error-gt1-soc-fatal-hbm-ss0-1 0x1000000000000026 0
error-gt1-soc-fatal-hbm-ss0-2 0x1000000000000027 0
error-gt1-soc-fatal-hbm-ss0-3 0x1000000000000028 0
error-gt1-soc-fatal-hbm-ss0-4 0x1000000000000029 0
error-gt1-soc-fatal-hbm-ss0-5 0x100000000000002a 0
error-gt1-soc-fatal-hbm-ss0-6 0x100000000000002b 0
error-gt1-soc-fatal-hbm-ss0-7 0x100000000000002c 0
error-gt1-soc-fatal-hbm-ss1-0 0x100000000000002d 0
error-gt1-soc-fatal-hbm-ss1-1 0x100000000000002e 0
error-gt1-soc-fatal-hbm-ss1-2 0x100000000000002f 0
error-gt1-soc-fatal-hbm-ss1-3 0x1000000000000030 0
error-gt1-soc-fatal-hbm-ss1-4 0x1000000000000031 0
error-gt1-soc-fatal-hbm-ss1-5 0x1000000000000032 0
error-gt1-soc-fatal-hbm-ss1-6 0x1000000000000033 0
error-gt1-soc-fatal-hbm-ss1-7 0x1000000000000034 0
error-gt1-soc-fatal-hbm-ss2-0 0x1000000000000035 0
error-gt1-soc-fatal-hbm-ss2-1 0x1000000000000036 0
error-gt1-soc-fatal-hbm-ss2-2 0x1000000000000037 0
error-gt1-soc-fatal-hbm-ss2-3 0x1000000000000038 0
error-gt1-soc-fatal-hbm-ss2-4 0x1000000000000039 0
error-gt1-soc-fatal-hbm-ss2-5 0x100000000000003a 0
error-gt1-soc-fatal-hbm-ss2-6 0x100000000000003b 0
error-gt1-soc-fatal-hbm-ss2-7 0x100000000000003c 0
error-gt1-soc-fatal-hbm-ss3-0 0x100000000000003d 0
error-gt1-soc-fatal-hbm-ss3-1 0x100000000000003e 0
error-gt1-soc-fatal-hbm-ss3-2 0x100000000000003f 0
error-gt1-soc-fatal-hbm-ss3-3 0x1000000000000040 0
error-gt1-soc-fatal-hbm-ss3-4 0x1000000000000041 0
error-gt1-soc-fatal-hbm-ss3-5 0x1000000000000042 0
error-gt1-soc-fatal-hbm-ss3-6 0x1000000000000043 0
error-gt1-soc-fatal-hbm-ss3-7 0x1000000000000044 0
wait on a error event:
$ ./drm_ras WAIT_ON_EVENT --device=drm:/dev/dri/card1
waiting for error event
error event received
counter value 0
list all errors:
$ ./drm_ras LIST_ERRORS --device=drm:/dev/dri/card1
name config-id
error-gt0-correctable-guc 0x0000000000000001
error-gt0-correctable-slm 0x0000000000000003
error-gt0-correctable-eu-ic 0x0000000000000004
error-gt0-correctable-eu-grf 0x0000000000000005
error-gt0-fatal-guc 0x0000000000000009
error-gt0-fatal-slm 0x000000000000000d
error-gt0-fatal-eu-grf 0x000000000000000f
error-gt0-fatal-fpu 0x0000000000000010
error-gt0-fatal-tlb 0x0000000000000011
error-gt0-fatal-l3-fabric 0x0000000000000012
error-gt0-correctable-subslice 0x0000000000000013
error-gt0-correctable-l3bank 0x0000000000000014
error-gt0-fatal-subslice 0x0000000000000015
error-gt0-fatal-l3bank 0x0000000000000016
error-gt0-sgunit-correctable 0x0000000000000017
error-gt0-sgunit-nonfatal 0x0000000000000018
error-gt0-sgunit-fatal 0x0000000000000019
error-gt0-soc-fatal-psf-csc-0 0x000000000000001a
error-gt0-soc-fatal-psf-csc-1 0x000000000000001b
error-gt0-soc-fatal-psf-csc-2 0x000000000000001c
error-gt0-soc-fatal-punit 0x000000000000001d
error-gt0-soc-fatal-psf-0 0x000000000000001e
error-gt0-soc-fatal-psf-1 0x000000000000001f
error-gt0-soc-fatal-psf-2 0x0000000000000020
error-gt0-soc-fatal-cd0 0x0000000000000021
error-gt0-soc-fatal-cd0-mdfi 0x0000000000000022
error-gt0-soc-fatal-mdfi-east 0x0000000000000023
error-gt0-soc-fatal-mdfi-south 0x0000000000000024
error-gt0-soc-fatal-hbm-ss0-0 0x0000000000000025
error-gt0-soc-fatal-hbm-ss0-1 0x0000000000000026
error-gt0-soc-fatal-hbm-ss0-2 0x0000000000000027
error-gt0-soc-fatal-hbm-ss0-3 0x0000000000000028
error-gt0-soc-fatal-hbm-ss0-4 0x0000000000000029
error-gt0-soc-fatal-hbm-ss0-5 0x000000000000002a
error-gt0-soc-fatal-hbm-ss0-6 0x000000000000002b
error-gt0-soc-fatal-hbm-ss0-7 0x000000000000002c
error-gt0-soc-fatal-hbm-ss1-0 0x000000000000002d
error-gt0-soc-fatal-hbm-ss1-1 0x000000000000002e
error-gt0-soc-fatal-hbm-ss1-2 0x000000000000002f
error-gt0-soc-fatal-hbm-ss1-3 0x0000000000000030
error-gt0-soc-fatal-hbm-ss1-4 0x0000000000000031
error-gt0-soc-fatal-hbm-ss1-5 0x0000000000000032
error-gt0-soc-fatal-hbm-ss1-6 0x0000000000000033
error-gt0-soc-fatal-hbm-ss1-7 0x0000000000000034
error-gt0-soc-fatal-hbm-ss2-0 0x0000000000000035
error-gt0-soc-fatal-hbm-ss2-1 0x0000000000000036
error-gt0-soc-fatal-hbm-ss2-2 0x0000000000000037
error-gt0-soc-fatal-hbm-ss2-3 0x0000000000000038
error-gt0-soc-fatal-hbm-ss2-4 0x0000000000000039
error-gt0-soc-fatal-hbm-ss2-5 0x000000000000003a
error-gt0-soc-fatal-hbm-ss2-6 0x000000000000003b
error-gt0-soc-fatal-hbm-ss2-7 0x000000000000003c
error-gt0-soc-fatal-hbm-ss3-0 0x000000000000003d
error-gt0-soc-fatal-hbm-ss3-1 0x000000000000003e
error-gt0-soc-fatal-hbm-ss3-2 0x000000000000003f
error-gt0-soc-fatal-hbm-ss3-3 0x0000000000000040
error-gt0-soc-fatal-hbm-ss3-4 0x0000000000000041
error-gt0-soc-fatal-hbm-ss3-5 0x0000000000000042
error-gt0-soc-fatal-hbm-ss3-6 0x0000000000000043
error-gt0-soc-fatal-hbm-ss3-7 0x0000000000000044
error-gt0-gsc-correctable-sram-ecc 0x0000000000000045
error-gt0-gsc-nonfatal-mia-shutdown 0x0000000000000046
error-gt0-gsc-nonfatal-mia-int 0x0000000000000047
error-gt0-gsc-nonfatal-sram-ecc 0x0000000000000048
error-gt0-gsc-nonfatal-wdg-timeout 0x0000000000000049
error-gt0-gsc-nonfatal-rom-parity 0x000000000000004a
error-gt0-gsc-nonfatal-ucode-parity 0x000000000000004b
error-gt0-gsc-nonfatal-glitch-det 0x000000000000004c
error-gt0-gsc-nonfatal-fuse-pull 0x000000000000004d
error-gt0-gsc-nonfatal-fuse-crc-check 0x000000000000004e
error-gt0-gsc-nonfatal-selfmbist 0x000000000000004f
error-gt0-gsc-nonfatal-aon-parity 0x0000000000000050
error-gt1-correctable-guc 0x1000000000000001
error-gt1-correctable-slm 0x1000000000000003
error-gt1-correctable-eu-ic 0x1000000000000004
error-gt1-correctable-eu-grf 0x1000000000000005
error-gt1-fatal-guc 0x1000000000000009
error-gt1-fatal-slm 0x100000000000000d
error-gt1-fatal-eu-grf 0x100000000000000f
error-gt1-fatal-fpu 0x1000000000000010
error-gt1-fatal-tlb 0x1000000000000011
error-gt1-fatal-l3-fabric 0x1000000000000012
error-gt1-correctable-subslice 0x1000000000000013
error-gt1-correctable-l3bank 0x1000000000000014
error-gt1-fatal-subslice 0x1000000000000015
error-gt1-fatal-l3bank 0x1000000000000016
error-gt1-sgunit-correctable 0x1000000000000017
error-gt1-sgunit-nonfatal 0x1000000000000018
error-gt1-sgunit-fatal 0x1000000000000019
error-gt1-soc-fatal-psf-csc-0 0x100000000000001a
error-gt1-soc-fatal-psf-csc-1 0x100000000000001b
error-gt1-soc-fatal-psf-csc-2 0x100000000000001c
error-gt1-soc-fatal-punit 0x100000000000001d
error-gt1-soc-fatal-psf-0 0x100000000000001e
error-gt1-soc-fatal-psf-1 0x100000000000001f
error-gt1-soc-fatal-psf-2 0x1000000000000020
error-gt1-soc-fatal-cd0 0x1000000000000021
error-gt1-soc-fatal-cd0-mdfi 0x1000000000000022
error-gt1-soc-fatal-mdfi-east 0x1000000000000023
error-gt1-soc-fatal-mdfi-south 0x1000000000000024
error-gt1-soc-fatal-hbm-ss0-0 0x1000000000000025
error-gt1-soc-fatal-hbm-ss0-1 0x1000000000000026
error-gt1-soc-fatal-hbm-ss0-2 0x1000000000000027
error-gt1-soc-fatal-hbm-ss0-3 0x1000000000000028
error-gt1-soc-fatal-hbm-ss0-4 0x1000000000000029
error-gt1-soc-fatal-hbm-ss0-5 0x100000000000002a
error-gt1-soc-fatal-hbm-ss0-6 0x100000000000002b
error-gt1-soc-fatal-hbm-ss0-7 0x100000000000002c
error-gt1-soc-fatal-hbm-ss1-0 0x100000000000002d
error-gt1-soc-fatal-hbm-ss1-1 0x100000000000002e
error-gt1-soc-fatal-hbm-ss1-2 0x100000000000002f
error-gt1-soc-fatal-hbm-ss1-3 0x1000000000000030
error-gt1-soc-fatal-hbm-ss1-4 0x1000000000000031
error-gt1-soc-fatal-hbm-ss1-5 0x1000000000000032
error-gt1-soc-fatal-hbm-ss1-6 0x1000000000000033
error-gt1-soc-fatal-hbm-ss1-7 0x1000000000000034
error-gt1-soc-fatal-hbm-ss2-0 0x1000000000000035
error-gt1-soc-fatal-hbm-ss2-1 0x1000000000000036
error-gt1-soc-fatal-hbm-ss2-2 0x1000000000000037
error-gt1-soc-fatal-hbm-ss2-3 0x1000000000000038
error-gt1-soc-fatal-hbm-ss2-4 0x1000000000000039
error-gt1-soc-fatal-hbm-ss2-5 0x100000000000003a
error-gt1-soc-fatal-hbm-ss2-6 0x100000000000003b
error-gt1-soc-fatal-hbm-ss2-7 0x100000000000003c
error-gt1-soc-fatal-hbm-ss3-0 0x100000000000003d
error-gt1-soc-fatal-hbm-ss3-1 0x100000000000003e
error-gt1-soc-fatal-hbm-ss3-2 0x100000000000003f
error-gt1-soc-fatal-hbm-ss3-3 0x1000000000000040
error-gt1-soc-fatal-hbm-ss3-4 0x1000000000000041
error-gt1-soc-fatal-hbm-ss3-5 0x1000000000000042
error-gt1-soc-fatal-hbm-ss3-6 0x1000000000000043
error-gt1-soc-fatal-hbm-ss3-7 0x1000000000000044
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: David Airlie <airlied at gmail.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Oded Gabbay <ogabbay at kernel.org>
Aravind Iddamsetty (5):
drm/netlink: Add netlink infrastructure
drm/xe/RAS: Register a genl netlink family
drm/xe/RAS: Expose the error counters
drm/netlink: define multicast groups
drm/xe/RAS: send multicast event on occurrence of an error
drivers/gpu/drm/xe/Makefile | 1 +
drivers/gpu/drm/xe/xe_device.c | 3 +
drivers/gpu/drm/xe/xe_device_types.h | 2 +
drivers/gpu/drm/xe/xe_irq.c | 32 ++
drivers/gpu/drm/xe/xe_module.c | 2 +
drivers/gpu/drm/xe/xe_netlink.c | 526 +++++++++++++++++++++++++++
drivers/gpu/drm/xe/xe_netlink.h | 14 +
include/uapi/drm/drm_netlink.h | 81 +++++
include/uapi/drm/xe_drm.h | 64 ++++
9 files changed, 725 insertions(+)
create mode 100644 drivers/gpu/drm/xe/xe_netlink.c
create mode 100644 drivers/gpu/drm/xe/xe_netlink.h
create mode 100644 include/uapi/drm/drm_netlink.h
--
2.25.1
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