diff options
Diffstat (limited to 'Documentation/accel')
| -rw-r--r-- | Documentation/accel/qaic/aic100.rst | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/Documentation/accel/qaic/aic100.rst b/Documentation/accel/qaic/aic100.rst index 273da6192fb3..3b287c3987d2 100644 --- a/Documentation/accel/qaic/aic100.rst +++ b/Documentation/accel/qaic/aic100.rst @@ -487,8 +487,8 @@ one user crashes, the fallout of that should be limited to that workload and not impact other workloads. SSR accomplishes this. If a particular workload crashes, QSM notifies the host via the QAIC_SSR MHI -channel. This notification identifies the workload by it's assigned DBC. A -multi-stage recovery process is then used to cleanup both sides, and get the +channel. This notification identifies the workload by its assigned DBC. A +multi-stage recovery process is then used to cleanup both sides, and gets the DBC/NSPs into a working state. When SSR occurs, any state in the workload is lost. Any inputs that were in @@ -496,6 +496,26 @@ process, or queued by not yet serviced, are lost. The loaded artifacts will remain in on-card DDR, but the host will need to re-activate the workload if it desires to recover the workload. +When SSR occurs for a specific NSP, the assigned DBC goes through the +following state transactions in order: +DBC_STATE_BEFORE_SHUTDOWN + Indicates that the affected NSP was found in an unrecoverable error + condition. +DBC_STATE_AFTER_SHUTDOWN + Indicates that the NSP is under reset. +DBC_STATE_BEFORE_POWER_UP + Indicates that the NSP's debug information has been collected, and is + ready to be collected by the host (if desired). At that stage the NSP + is restarted by QSM. +DBC_STATE_AFTER_POWER_UP + Indicates that the NSP has been restarted, fully operational and is + in idle state. + +SSR also has an optional crashdump collection feature. If enabled, the host can +collect the memory dump for the crashed NSP and dump it to the user space via +the dev_coredump subsystem. The host can also decline the crashdump collection +request from the device. + Reliability, Accessibility, Serviceability (RAS) ================================================ |