SMARTPQI(4) Linux Programmer's Manual SMARTPQI(4)
NAME
smartpqi - Microsemi Smart Family SCSI driver
SYNOPSIS
modprobe smartpqi [disable_device_id_wildcards={0|1}]
[disable_heartbeat={0|1}]
[disable_ctrl_shutdown={0|1}]
[lockup_action={none|reboot|panic}]
[expose_ld_first={0|1}] [hide_vsep={0|1}]
DESCRIPTION
smartpqi is a SCSI driver for Microsemi Smart Family controllers.
Supported ioctl() operations
For compatibility with applications written for the cciss(4) and
hpsa(4) drivers, many, but not all of the ioctl(2) operations supported
by the hpsa driver are also supported by the smartpqi driver. The data
structures used by these operations are described in the Linux kernel
source file include/linux/cciss_ioctl.h.
CCISS_DEREGDISK, CCISS_REGNEWDISK, CCISS_REGNEWD
These operations all do exactly the same thing, which is to
cause the driver to re-scan for new devices. This does exactly
the same thing as writing to the smartpqi-specific host rescan
attribute.
CCISS_GETPCIINFO
This operation Returns the PCI domain, bus, device and function
and "board ID" (PCI subsystem ID).
CCISS_GETDRIVVER
This operation returns the driver version in four bytes, encoded
as:
(major_version << 28) | (minor_version << 24) |
(release << 16) | revision
CCISS_PASSTHRU
Allows BMIC and CISS commands to be passed through to the con-
troller.
Boot options
disable_device_id_wildcards={0|1}
Disables support for device ID wildcards. The default value is
0.
disable_heartbeat={0|1}
Disables support for the controller's heartbeat check. This pa-
rameter is used for debugging purposes. The default value is 0,
leaving the controller's heartbeat check active.
disable_ctrl_shutdown={0|1}
Disables support for shutting down the controller in the event
of a controller lockup. The default value is 0.
lockup_action={none|reboot|panic}
Specifies the action the driver takes when a controller lockup
is detected. The default action is none.
parameter action
---------------------------------------------
none take controller offline only
reboot reboot the system
panic panic the system
expose_ld_first={0|1}
This option enables support for exposing logical devices to the
operating system before physical devices. The default value is
0.
hide_vsep={0|1}
This option enables disabling exposure of the virtual SEP to the
host. This is usually associated with direct attached drives.
The default value is 0.
FILES
Device nodes
Logical drives are accessed via the SCSI disk driver (sd), tape drives
via the SCSI tape driver (st), and the RAID controller via the SCSI
generic driver (sg), with device nodes named /dev/sd*, /dev/st*, and
/dev/sg*, respectively.
SmartPQI-specific host attribute files in /sys
/sys/class/scsi_host/host*/rescan
The host rescan attribute is a write-only attribute. Writing to
this attribute will cause the driver to scan for new, changed,
or removed devices (e.g., hot-plugged tape drives, or newly con-
figured or deleted logical drives) and notify the SCSI mid-layer
of any changes detected. Usually this action is triggered auto-
matically by configuration changes, so the user should not nor-
mally have to write to this file. Doing so may be useful when
hot-plugging devices such as tape drives or entire storage boxes
containing pre-configured logical drives.
/sys/class/scsi_host/host*/version
The host version attribute is a read-only attribute. This at-
tribute contains the driver version and the controller firmware
version.
For example:
$ cat /sys/class/scsi_host/host1/version
driver: 1.1.2-126
firmware: 1.29-112
/sys/class/scsi_host/host*/lockup_action
The host lockup_action attribute is a read/write attribute.
This attribute will cause the driver to perform a specific ac-
tion in the unlikely event that a controller lockup has been de-
tected. See OPTIONS above for an explanation of the lockup_ac-
tion values.
/sys/class/scsi_host/host*/driver_version
The driver_version attribute is read-only. This attribute con-
tains the smartpqi driver version.
For example:
$ cat /sys/class/scsi_host/host1/driver_version
1.1.2-126
/sys/class/scsi_host/host*/firmware_version
The firmware_version attribute is read-only. This attribute
contains the controller firmware version.
For example:
$ cat /sys/class/scsi_host/host1/firmware_version
1.29-112
/sys/class/scsi_host/host*/model
The model attribute is read-only. This attribute contains the
product identification string of the controller.
For example:
$ cat /sys/class/scsi_host/host1/model
1100-16i
/sys/class/scsi_host/host*/serial_number
The serial_number attribute is read-only. This attribute con-
tains the unique identification number of the controller.
For example:
$ cat /sys/class/scsi_host/host1/serial_number
6A316373777
/sys/class/scsi_host/host*/vendor
The vendor attribute is read-only. This attribute contains the
vendor identification string of the controller.
For example:
$ cat /sys/class/scsi_host/host1/vendor
Adaptec
SmartPQI-specific disk attribute files in /sys
In the file specifications below, c stands for the number of the appro-
priate SCSI controller, b is the bus number, t the target number, and l
is the logical unit number (LUN).
/sys/class/scsi_disk/c:b:t:l/device/raid_level
The raid_level attribute is read-only. This attribute contains
the RAID level of each logical drive.
For example:
$ cat /sys/class/scsi_disk/4:0:0:0/device/raid_level
RAID 0
/sys/class/scsi_disk/c:b:t:l/device/sas_address
The sas_address attribute is read-only. This attribute contains
the unique identifier of the disk.
For example:
$ cat /sys/class/scsi_disk/1:0:3:0/device/sas_address
0x5001173d028543a2
/sys/class/scsi_disk/c:b:t:l/device/ssd_smart_path_enabled
The ssd_smart_path_enabled attribute is read-only. This attri-
bute is for ioaccel-enabled volumes. (Ioaccel is an alternative
driver submission path that allows the driver to send I/O re-
quests directly to backend SCSI devices, bypassing the con-
troller firmware. This results in an increase in performance.
This method is used for HBA disks and for logical volumes com-
prised of SSDs.) Contains 1 if ioaccel is enabled for the vol-
ume and 0 otherwise.
For example:
$ cat /sys/class/scsi_disk/1:0:3:0/device/ssd_smart_path_enabled
0
VERSIONS
The smartpqi driver was added in Linux 4.9.
NOTES
Configuration
To configure a Microsemi Smart Family controller, refer to the User
Guide for the controller, which can be found by searching for the spe-
cific controller at <https://storage.microsemi.com/>.
SEE ALSO
cciss(4), hpsa(4), sd(4), st(4)
Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux ker-
nel source tree.
COLOPHON
This page is part of release 5.07 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2019-10-10 SMARTPQI(4)