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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 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 de‐
bugging 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 de‐
fault 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 be‐
fore 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 usu‐
ally 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 configura‐
tion 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 identi‐
fication 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-en‐
abled 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.

COLOPHON
This page is part of release 5.10 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)