1SMARTPQI(4)                Linux Programmer's Manual               SMARTPQI(4)
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NAME

6       smartpqi - Microsemi Smart Family SCSI driver
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SYNOPSIS

9       modprobe smartpqi [disable_device_id_wildcards={0|1}]
10                         [disable_heartbeat={0|1}]
11                         [disable_ctrl_shutdown={0|1}]
12                         [lockup_action={none|reboot|panic}]
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DESCRIPTION

15       smartpqi is a SCSI driver for Microsemi Smart Family controllers.
16
17   Supported ioctl() operations
18       For compatibility  with  applications  written  for  the  cciss(4)  and
19       hpsa(4) drivers, many, but not all of the ioctl(2) operations supported
20       by the hpsa driver are also supported by the smartpqi driver.  The data
21       structures  used  by these operations are described in the Linux kernel
22       source file include/linux/cciss_ioctl.h.
23
24       CCISS_DEREGDISK, CCISS_REGNEWDISK, CCISS_REGNEWD
25              These operations all do exactly the  same  thing,  which  is  to
26              cause  the driver to re-scan for new devices.  This does exactly
27              the same thing as writing to the smartpqi-specific  host  rescan
28              attribute.
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30       CCISS_GETPCIINFO
31              This  operation Returns the PCI domain, bus, device and function
32              and "board ID" (PCI subsystem ID).
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34       CCISS_GETDRIVVER
35              This operation returns the driver version in four bytes, encoded
36              as:
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38                  (major_version << 28) | (minor_version << 24) |
39                          (release << 16) | revision
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41       CCISS_PASSTHRU
42              Allows  BMIC  and CISS commands to be passed through to the con‐
43              troller.
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45   Boot options
46       disable_device_id_wildcards={0|1}
47              Disables support for device ID wildcards.  The default value  is
48              0.
49
50       disable_heartbeat={0|1}
51              Disables  support  for  the  controller's heartbeat check.  This
52              parameter is used for debugging purposes.  The default value  is
53              0, leaving the controller's heartbeat check active.
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55       disable_ctrl_shutdown={0|1}
56              Disables  support  for shutting down the controller in the event
57              of a controller lockup.  The default value is 0.
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59       lockup_action={none|reboot|panic}
60              Specifies the action the driver takes when a  controller  lockup
61              is detected.  The default action is none.
62
63              parameter   action
64              ─────────────────────────────────────────────
65              none        take controller offline only
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67              reboot      reboot the system
68              panic       panic the system
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FILES

71   Device nodes
72       Logical  drives are accessed via the SCSI disk driver (sd), tape drives
73       via the SCSI tape driver (st), and the RAID  controller  via  the  SCSI
74       generic  driver  (sg),  with device nodes named /dev/sd*, /dev/st*, and
75       /dev/sg*, respectively.
76
77   SmartPQI-specific host attribute files in /sys
78       /sys/class/scsi_host/host*/rescan
79              The host rescan attribute is a write-only attribute.  Writing to
80              this  attribute  will cause the driver to scan for new, changed,
81              or removed devices (e.g., hot-plugged tape drives, or newly con‐
82              figured or deleted logical drives) and notify the SCSI mid-layer
83              of any changes detected.  Usually this action is triggered auto‐
84              matically  by configuration changes, so the user should not nor‐
85              mally have to write to this file.  Doing so may be  useful  when
86              hot-plugging devices such as tape drives or entire storage boxes
87              containing pre-configured logical drives.
88
89       /sys/class/scsi_host/host*/version
90              The host version  attribute  is  a  read-only  attribute.   This
91              attribute   contains  the  driver  version  and  the  controller
92              firmware version.
93
94              For example:
95
96                  $ cat /sys/class/scsi_host/host1/version
97                  driver: 1.1.2-126
98                  firmware: 1.29-112
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100       /sys/class/scsi_host/host*/lockup_action
101              The host lockup_action  attribute  is  a  read/write  attribute.
102              This  attribute  will  cause  the  driver  to perform a specific
103              action in the unlikely event that a controller lockup  has  been
104              detected.    See   OPTIONS  above  for  an  explanation  of  the
105              lockup_action values.
106
107   SmartPQI-specific disk attribute files in /sys
108       In the file specifications below, c stands for the number of the appro‐
109       priate SCSI controller, b is the bus number, t the target number, and l
110       is the logical unit number (LUN).
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112       /sys/class/scsi_disk/c:b:t:l/device/raid_level
113              The raid_level attribute is read-only.  This attribute  contains
114              the RAID level of each logical drive.
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116              For example:
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118                  $ cat /sys/class/scsi_disk/4:0:0:0/device/raid_level
119                  RAID 0
120
121       /sys/class/scsi_disk/c:b:t:l/device/sas_address
122              The sas_address attribute is read-only.  This attribute contains
123              the unique identifier of the disk.
124
125              For example:
126
127                  $ cat /sys/class/scsi_disk/1:0:3:0/device/sas_address
128                  0x5001173d028543a2
129
130       /sys/class/scsi_disk/c:b:t:l/device/ssd_smart_path_enabled
131              The  ssd_smart_path_enabled  attribute   is   read-only.    This
132              attribute is for ioaccel-enabled volumes.  (Ioaccel is an alter‐
133              native driver submission path that allows the driver to send I/O
134              requests  directly  to  backend SCSI devices, bypassing the con‐
135              troller firmware.  This results in an increase  in  performance.
136              This  method  is used for HBA disks and for logical volumes com‐
137              prised of SSDs.)  Contains 1 if ioaccel is enabled for the  vol‐
138              ume and 0 otherwise.
139
140              For example:
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142                $ cat /sys/class/scsi_disk/1:0:3:0/device/ssd_smart_path_enabled
143                0
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VERSIONS

146       The smarpqi driver was added in Linux 4.9.
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NOTES

149   Configuration
150       To  configure  a  Microsemi  Smart Family controller, refer to the User
151       Guide for the controller, which can be found by searching for the  spe‐
152       cific controller at ⟨https://storage.microsemi.com/⟩.
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SEE ALSO

155       cciss(4), hpsa(4), sd(4), st(4)
156
157       Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux ker‐
158       nel source tree.
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COLOPHON

161       This page is part of release 4.16 of the Linux  man-pages  project.   A
162       description  of  the project, information about reporting bugs, and the
163       latest    version    of    this    page,    can     be     found     at
164       https://www.kernel.org/doc/man-pages/.
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168Linux                             2017-10-19                       SMARTPQI(4)
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