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}]

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

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 ver-
	      sion.

	      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.

   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 smarpqi 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 kernel source tree.

Linux								    2017-10-19							       SMARTPQI(4)