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| author | Suganath Prabu S <suganath-prabu.subramani@broadcom.com> | 2020-11-26 10:43:09 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-12-09 17:34:19 +0100 |
| commit | 0e17a87c5950b91aa5ed11ba569b46dea13b1e0d (patch) | |
| tree | d550a633a2fb4c763834712bfb7f48263b7f3820 /fs/userfaultfd.c | |
| parent | scsi: mpt3sas: Add persistent SCSI sense trigger page (diff) | |
| download | linux-0e17a87c5950b91aa5ed11ba569b46dea13b1e0d.tar.xz linux-0e17a87c5950b91aa5ed11ba569b46dea13b1e0d.zip | |
scsi: mpt3sas: Add persistent MPI trigger page
This page is used to store information about MPI (IOC Status & LogInfo)
triggers.
Driver Persistent Trigger Page-4 format:
-------------------------------------------------------
| 31 24 23 16 15 8 7 0| Byte
-------------------------------------------------------
| PageType | PageNumber | Reserved | PageVersion | 0x00
--------------------------------------------------------
| Reserved | ExtPageType | ExtPageLength | 0x04
--------------------------------------------------------
| Reserved | NumMpiTriggerEntries | 0x08
--------------------------------------------------------
| MPITriggerEntry[0] | 0x0C
--------------------------------------------------------
| … |
--------------------------------------------------------
| MPITriggerEntry[19] | 0xA4
--------------------------------------------------------
NumMpiTriggerEntries:
This field indicates number of MPI (IOC Status & LogInfo) trigger entries
stored in this page. Currently driver is supporting a maximum of 20-MPI
trigger entries.
MPITriggerEntry:
-----------------------------------------------------
| 31 16 15 0 |
-----------------------------------------------------
| Reserved | IOCStatus |
-----------------------------------------------------
| IOCLogInfo |
-----------------------------------------------------
IOCStatus => Status value from the IOC
IOCLogInfo => Specific value that supplements the IOCStatus.
Link: https://lore.kernel.org/r/20201126094311.8686-7-suganath-prabu.subramani@broadcom.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'fs/userfaultfd.c')
0 files changed, 0 insertions, 0 deletions