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+.\" Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
+.\" Written by Stephen M. Cameron <scameron@beardog.cce.hp.com>
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-only
+.\"
+.\" shorthand for double quote that works everywhere.
+.ds q \N'34'
+.TH hpsa 4 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+hpsa \- HP Smart Array SCSI driver
+.SH SYNOPSIS
+.nf
+modprobe hpsa [ hpsa_allow_any=1 ]
+.fi
+.SH DESCRIPTION
+.B hpsa
+is a SCSI driver for HP Smart Array RAID controllers.
+.SS Options
+.IR "hpsa_allow_any=1" :
+This option allows the driver to attempt to operate on
+any HP Smart Array hardware RAID controller,
+even if it is not explicitly known to the driver.
+This allows newer hardware to work with older drivers.
+Typically this is used to allow installation of
+operating systems from media that predates the
+RAID controller, though it may also be used to enable
+.B hpsa
+to drive older controllers that would normally be handled by the
+.BR cciss (4)
+driver.
+These older boards have not been tested and are
+not supported with
+.BR hpsa ,
+and
+.BR cciss (4)
+should still be used for these.
+.SS Supported hardware
+The
+.B hpsa
+driver supports the following Smart Array boards:
+.P
+.nf
+    Smart Array P700M
+    Smart Array P212
+    Smart Array P410
+    Smart Array P410i
+    Smart Array P411
+    Smart Array P812
+    Smart Array P712m
+    Smart Array P711m
+    StorageWorks P1210m
+.fi
+.P
+.\" commit 135ae6edeb51979d0998daf1357f149a7d6ebb08
+Since Linux 4.14, the following Smart Array boards are also supported:
+.P
+.nf
+    Smart Array 5300
+    Smart Array 5312
+    Smart Array 532
+    Smart Array 5i
+    Smart Array 6400
+    Smart Array 6400 EM
+    Smart Array 641
+    Smart Array 642
+    Smart Array 6i
+    Smart Array E200
+    Smart Array E200i
+    Smart Array E200i
+    Smart Array E200i
+    Smart Array E200i
+    Smart Array E500
+    Smart Array P400
+    Smart Array P400i
+    Smart Array P600
+    Smart Array P700m
+    Smart Array P800
+.fi
+.SS Configuration details
+To configure HP Smart Array controllers,
+use the HP Array Configuration Utility (either
+.BR hpacuxe (8)
+or
+.BR hpacucli (8))
+or the Offline ROM-based Configuration Utility (ORCA)
+run from the Smart Array's option ROM at boot time.
+.SH FILES
+.SS Device nodes
+Logical drives are accessed via the SCSI disk driver
+.RB ( sd (4)),
+tape drives via the SCSI tape driver
+.RB ( st (4)),
+and
+the RAID controller via the SCSI generic driver
+.RB ( sg (4)),
+with device nodes named
+.IR /dev/sd* ,
+.IR /dev/st* ,
+and
+.IR /dev/sg* ,
+respectively.
+.SS HPSA-specific host attribute files in /sys
+.TP
+.I /sys/class/scsi_host/host*/rescan
+This 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, etc.)
+and notify the SCSI midlayer of any changes detected.
+Normally a rescan is triggered automatically
+by HP's Array Configuration Utility (either the GUI or the
+command-line variety);
+thus, for logical drive changes, the user should not
+normally have to use this attribute.
+This attribute may be useful when hot plugging devices like tape drives,
+or entire storage boxes containing preconfigured logical drives.
+.TP
+.I /sys/class/scsi_host/host*/firmware_revision
+This attribute contains the firmware version of the Smart Array.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+# \fBcd /sys/class/scsi_host/host4\fP
+# \fBcat firmware_revision\fP
+7.14
+.EE
+.in
+.\"
+.SS HPSA-specific disk attribute files in /sys
+.TP
+.I /sys/class/scsi_disk/c:b:t:l/device/unique_id
+This attribute contains a 32 hex-digit unique ID for each logical drive.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+# \fBcd /sys/class/scsi_disk/4:0:0:0/device\fP
+# \fBcat unique_id\fP
+600508B1001044395355323037570F77
+.EE
+.in
+.TP
+.I /sys/class/scsi_disk/c:b:t:l/device/raid_level
+This attribute contains the RAID level of each logical drive.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+# \fBcd /sys/class/scsi_disk/4:0:0:0/device\fP
+# \fBcat raid_level\fP
+RAID 0
+.EE
+.in
+.TP
+.I /sys/class/scsi_disk/c:b:t:l/device/lunid
+This attribute contains the 16 hex-digit (8 byte) LUN ID
+by which a logical drive or physical device can be addressed.
+.IR c : b : t : l
+are the controller, bus, target, and lun of the device.
+.P
+For example:
+.IP
+.in +4n
+.EX
+# \fBcd /sys/class/scsi_disk/4:0:0:0/device\fP
+# \fBcat lunid\fP
+0x0000004000000000
+.EE
+.in
+.\"
+.SS Supported ioctl() operations
+For compatibility with applications written for the
+.BR cciss (4)
+driver, many, but
+not all of the ioctls supported by the
+.BR cciss (4)
+driver are also supported by the
+.B hpsa
+driver.
+The data structures used by these ioctls are described in
+the Linux kernel source file
+.IR include/linux/cciss_ioctl.h .
+.TP
+.B CCISS_DEREGDISK
+.TQ
+.B CCISS_REGNEWDISK
+.TQ
+.B CCISS_REGNEWD
+These three ioctls all do exactly the same thing,
+which is to cause the driver to rescan for new devices.
+This does exactly the same thing as writing to the
+hpsa-specific host "rescan" attribute.
+.TP
+.B CCISS_GETPCIINFO
+Returns PCI domain, bus, device, and function and "board ID" (PCI subsystem ID).
+.TP
+.B CCISS_GETDRIVVER
+Returns driver version in three bytes encoded as:
+.IP
+.in +4n
+.EX
+(major_version << 16) | (minor_version << 8) |
+    (subminor_version)
+.EE
+.in
+.TP
+.B CCISS_PASSTHRU
+.TQ
+.B CCISS_BIG_PASSTHRU
+Allows "BMIC" and "CISS" commands to be passed through to the Smart Array.
+These are used extensively by the HP Array Configuration Utility,
+SNMP storage agents, and so on.
+See
+.I cciss_vol_status
+at
+.UR http://cciss.sf.net
+.UE
+for some examples.
+.SH SEE ALSO
+.BR cciss (4),
+.BR sd (4),
+.BR st (4),
+.BR cciss_vol_status (8),
+.BR hpacucli (8),
+.BR hpacuxe (8)
+.P
+.UR http://cciss.sf.net
+.UE ,
+and
+.I Documentation/scsi/hpsa.txt
+and
+.I Documentation/ABI/testing/sysfs\-bus\-pci\-devices\-cciss
+in the Linux kernel source tree
+.\" .SH AUTHORS
+.\" Don Brace, Steve Cameron, Tom Lawler, Mike Miller, Scott Teel
+.\" and probably some other people.