SMARTPQI(4)                Linux Programmer's Manual               SMARTPQI(4)

       smartpqi - Microsemi Smart Family SCSI driver

       modprobe smartpqi [disable_device_id_wildcards={0|1}]

       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.

              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

              This  operation Returns the PCI domain, bus, device and function
              and "board ID" (PCI subsystem ID).

              This operation returns the driver version in four bytes, encoded

                  (major_version << 28) | (minor_version << 24) |
                          (release << 16) | revision

              Allows  BMIC  and CISS commands to be passed through to the con-

   Boot options
              Disables support for device ID wildcards.  The default value  is

              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.

              Disables  support  for shutting down the controller in the event
              of a controller lockup.  The default value is 0.

              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

   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
              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.

              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

              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 appro-
       priate SCSI controller, b is the bus number, t the target number, and l
       is the logical unit number (LUN).

              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

              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

              The  ssd_smart_path_enabled  attribute   is   read-only.    This
              attribute is for ioaccel-enabled volumes.  (Ioaccel is an alter-
              native driver submission path that allows the driver to send I/O
              requests  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

       The smarpqi driver was added in Linux 4.9.

       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 <>.

       cciss(4), hpsa(4), sd(4), st(4)

       Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux ker-
       nel source tree.

       This page is part of release 4.15 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

Linux                             2017-10-19                       SMARTPQI(4)
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