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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 controller.
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 parameter 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 configured or deleted logical drives) and notify the
SCSI mid-layer of any changes detected. Usually this action is triggered
automatically by configuration changes, so the user should not normally 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 attribute 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 action in the unlikely event that a
controller lockup has been detected. See OPTIONS above for an explanation of the
lockup_action values.
/sys/class/scsi_host/host*/driver_version
The driver_version attribute is read-only. This attribute contains 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 contains 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 appropriate 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 attribute is for ioaccel-
enabled volumes. (Ioaccel is an alternative driver submission path that allows the
driver to send I/O requests directly to backend SCSI devices, bypassing the
controller firmware. This results in an increase in performance. This method is
used for HBA disks and for logical volumes comprised of SSDs.) Contains 1 if
ioaccel is enabled for the volume 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 specific 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 kernel source tree.