NAME | SYNOPSIS | DESCRIPTION | FILES | VERSIONS | NOTES | SEE ALSO | COLOPHON

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

NAME         top

       smartpqi - Microsemi Smart Family SCSI driver

SYNOPSIS         top

       modprobe smartpqi [disable_device_id_wildcards={0|1}]
                         [disable_heartbeat={0|1}]
                         [disable_ctrl_shutdown={0|1}]
                         [lockup_action={none|reboot|panic}]

DESCRIPTION         top

       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
              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         top

   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.

   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 num‐
       ber, 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 con‐
              tains 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 con‐
              tains 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 per‐
              formance.  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         top

       The smarpqi driver was added in Linux 4.9.

NOTES         top

   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         top

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

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

COLOPHON         top

       This page is part of release 4.14 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                            2017-10-19                      SMARTPQI(4)