mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Don Brace](/assets/img/avatar_default.png)
added Documentation/scsi/smartpqi.txt [mkp: applied by hand] Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Don Brace <don.brace@microsemi.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
80 lines
2.7 KiB
Text
80 lines
2.7 KiB
Text
|
|
SMARTPQI - Microsemi Smart PQI Driver
|
|
-----------------------------------------
|
|
|
|
This file describes the smartpqi SCSI driver for Microsemi
|
|
(http://www.microsemi.com) PQI controllers. The smartpqi driver
|
|
is the next generation SCSI driver for Microsemi Corp. The smartpqi
|
|
driver is the first SCSI driver to implement the PQI queuing model.
|
|
|
|
The smartpqi driver will replace the aacraid driver for Adaptec Series 9
|
|
controllers. Customers running an older kernel (Pre-4.9) using an Adaptec
|
|
Series 9 controller will have to configure the smartpqi driver or their
|
|
volumes will not be added to the OS.
|
|
|
|
For Microsemi smartpqi controller support, enable the smartpqi driver
|
|
when configuring the kernel.
|
|
|
|
For more information on the PQI Queuing Interface, please see:
|
|
http://www.t10.org/drafts.htm
|
|
http://www.t10.org/members/w_pqi2.htm
|
|
|
|
Supported devices:
|
|
------------------
|
|
<Controller names to be added as they become publically available.>
|
|
|
|
smartpqi specific entries in /sys
|
|
-----------------------------
|
|
|
|
smartpqi host attributes:
|
|
-------------------------
|
|
/sys/class/scsi_host/host*/rescan
|
|
/sys/class/scsi_host/host*/version
|
|
|
|
The host rescan attribute is a write only attribute. Writing to this
|
|
attribute will trigger the driver to scan for new, changed, or removed
|
|
devices and notify the SCSI mid-layer of any changes detected.
|
|
|
|
The version attribute is read-only and will return the driver version
|
|
and the controller firmware version.
|
|
For example:
|
|
driver: 0.9.13-370
|
|
firmware: 0.01-522
|
|
|
|
smartpqi sas device attributes
|
|
------------------------------
|
|
HBA devices are added to the SAS transport layer. These attributes are
|
|
automatically added by the SAS transport layer.
|
|
|
|
/sys/class/sas_device/end_device-X:X/sas_address
|
|
/sys/class/sas_device/end_device-X:X/enclosure_identifier
|
|
/sys/class/sas_device/end_device-X:X/scsi_target_id
|
|
|
|
smartpqi specific ioctls:
|
|
-------------------------
|
|
|
|
For compatibility with applications written for the cciss protocol.
|
|
|
|
CCISS_DEREGDISK
|
|
CCISS_REGNEWDISK
|
|
CCISS_REGNEWD
|
|
|
|
The above three ioctls all do exactly the same thing, which is to cause the driver
|
|
to rescan for new devices. This does exactly the same thing as writing to the
|
|
smartpqi specific host "rescan" attribute.
|
|
|
|
CCISS_GETPCIINFO
|
|
|
|
Returns PCI domain, bus, device and function and "board ID" (PCI subsystem ID).
|
|
|
|
CCISS_GETDRIVVER
|
|
|
|
Returns driver version in three bytes encoded as:
|
|
(DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | (DRIVER_RELEASE << 16) | DRIVER_REVISION;
|
|
|
|
CCISS_PASSTHRU
|
|
|
|
Allows "BMIC" and "CISS" commands to be passed through to the Smart Storage Array.
|
|
These are used extensively by the SSA Array Configuration Utility, SNMP storage
|
|
agents, etc.
|
|
|