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mpt(4d)
Device Drivers & /dev files mpt(4D)
NAME
mpt - SCSI host bus adapter driver
SYNOPSIS
scsi@unit-address
DESCRIPTION
The mpt host bus adapter driver is a SCSA compliant nexus driver that
supports the LSI 53C1030 SCSI, SAS1064, SAS1068 and Dell SAS 6i/R con‐
trollers.
The mpt driver supports the standard functions provided by the SCSA
interface, including tagged and untagged queuing, Nar‐
row/Wide/Fast/Ultra SCSI/Ultra SCSI 2/Ultra SCSI 3/Ultra SCSI 4, and
auto request sense. The mpt driver does not support linked commands.
The mpt driver also supports SATA and Serial-Attached SCSI devices when
connected to LSI SAS1064 (PCI-X), SAS1068 and Dell SAS 6i/R (PCI-
Express) controllers.
DRIVER CONFIGURATION
The mpt driver obtains configuration parameters from the /ker‐
nel/drv/mpt.conf file. These parameters can override global SCSI set‐
tings.
The following configurable properties are applicable for parallel SCSI
controllers and devices: scsi-options, target<n>-scsi-options, scsi-
reset-delay, scsi-tag-age-limit, scsi-watchdog-tick, and scsi-initia‐
tor-id.
The property target<n>-scsi-options overrides the scsi-options property
value for target<n>, where <n> can vary from decimal 0 to 15 for paral‐
lel SCSI operations. The mpt driver supports the following parallel
SCSI options: SCSI_OPTIONS_DR, SCSI_OPTIONS_SYNC, SCSI_OPTIONS_TAG,
SCSI_OPTIONS_FAST, SCSI_OPTIONS_WIDE, SCSI_OPTIONS_FAST20,
SCSI_OPTIONS_FAST40, SCSI_OPTIONS_FAST80, SCSI_OPTIONS_FAST160, and
SCSI_OPTIONS_QAS. To view the numeric values of these options, see
/usr/include/sys/scsi/conf/autoconf.h.
The scsi-reset-delay and scsi-watchdog-tick properties are applicable
for Serial-Attached SCSI (SAS) controllers and SAS or SATA devices.
After periodic interval scsi-watchdog-tick, the mpt driver searches
through all current and disconnected commands for timeouts.
The scsi-tag-age-limit property is ignored by mpt, regardless of con‐
troller or devices type. Refer to scsi_hba_attach_setup(9F) for more
details of parallel SCSI properties and flags.
When supported, multipath-capable storage is attached with Serial-
Attached SCSI or SATA. Solaris I/O Multipathing may be enabled for mpt
instances. This feature is configured with the mpxio-disable property
in the mpt.conf file. To perform multipathing tasks, we recommend that
you use stmsboot(8). Specifying mpxio-disable="no" enables the feature,
while specifying mpxio-disable="yes" disables the feature. Solaris I/O
Multipathing may be enabled or disabled on a per-controller basis. The
following example shows how to disable multipathing on a controller
whose parent is /pci@7c0/pci@0/pci@9 and unit-address is 0:
name="mpt" parent="/pci@7c0/pci@0/pci@9" unit-address="0" mpxio-disable="yes";
Currently, mpt supports the mpt_offline_delay property. This property
delays the offlining of a device until the timer has expired. The
default value is 20 seconds.
mpt supports the mpt-on-bus-time property, which controls a timer that
resets a bus when a bus connection exceeds the timer value. The default
value of mpt-on-bus-time is 15 seconds. A value of 0 disables this fea‐
ture. The property can be configured in /kernel/drv/mpt.conf as mpt-on-
bus-time. In the following example, the timeout is disabled for unit 4
and set to two minutes for unit 4,1:
name="mpt" parent="/pci@1d,700000"
unit-address="4"
mpt-on-bus-time=0;
name="mpt" parent="/pci@1d,700000"
unit-address="4,1"
mpt-on-bus-time=120;
Values have the following effect:
No property configured: Default, 15 second timeout
n = 0: Disables bus timeout feature
0 < n <= 15: Minimum (and default), 15 seconds
15 < n <= 3435: The actual value in seconds
3435 < n: Maximum, 3435 seconds
EXAMPLES
Example 1 Using the mpt Configuration File
Create a file called /kernel/drv/mpt.conf, then add the following line:
scsi-options=0x78;
The above example disables tagged queuing, Fast/Ultra SCSI, and wide
mode for all mpt instances. The property value is calculated by or-ing
the individual SCSI_OPTIONS_xxx values defined in
/usr/include/sys/scsi/conf/autoconf.h.
The following example disables an option for one specific parallel SCSI
mpt device. See driver.conf(5) and pci(5) for more details.
name="mpt" parent="/pci@1f,4000"
unit-address="3"
target1-scsi-options=0x58
scsi-options=0x178 scsi-initiator-id=6;
Note that the default initiator ID is 7 and that the change to ID 6
occurs at attach time. It may be preferable to change the initiator ID
with eeprom(8).
The example above sets scsi-options for target 1 to 0x58 and all other
targets on this SCSI bus to 0x178.
You can determine the physical path name of the parent by using the
/devices tree or by following the link of the logical device name:
# ls -l /dev/rdsk/c0t0d0s0
lrwxrwxrwx 1 root root 45 May 16 10:08 /dev/rdsk/c0t0d0s0 ->
../../devices/pci@1f,4000/scsi@3/sd@0,0:a,raw
As in the previous example, the parent is /pci@1f,4000 and the unit-
address is 3.
To set scsi-options more specifically per target, do the following:
target1-scsi-options=0x78;
device-type-scsi-options-list =
"SEAGATE ST32550W", "seagate-scsi-options" ;
seagate-scsi-options = 0x58;
scsi-options=0x3f8;
The above sets scsi-options for target 1 to 0x78. All other targets on
the SCSI bus are set to 0x3f8 (with the exception of one specific disk
type for which scsi-options is set to 0x58).
scsi-options specified per target ID have the highest precedence, fol‐
lowed by scsi-options per device type. Global scsi-options (for all mpt
instances) per bus have the lowest precedence.
You must reboot the system for the specified scsi-options to take
effect.
SCSI Transport Capabilities
SCSI transport capabilities as set by the target driver. The following
capabilities can be queried and modified by the target driver: synchro‐
nous, tagged-qing, wide-xfer, auto-rqsense, qfull-retries, and qfull-
retry-interval. All other capabilities are query only.
By default, tagged-qing, auto-rqsense, and wide-xfer capabilities are
disabled, while disconnect, synchronous, and untagged-qing are enabled.
These capabilities can only have binary values (0 or 1). The default
value for qfull-retries is 10, while the default value for qfull-retry-
interval is 100. The qfull-retries capability is a uchar_t (0 to 255),
while qfull-retry-interval is a ushort_t (0 to 65535).
The target driver must enable tagged-qing and wide-xfer explicitly. The
untagged-qing capability is always enabled and its value cannot be mod‐
ified.
If a conflict exists between the value of scsi-options and a capabil‐
ity, the value set in scsi-options prevails. Only whom != 0 is sup‐
ported in the scsi_ifsetcap(9F) call.
Refer to scsi_ifsetcap(9F) and scsi_ifgetcap(9F) for details.
FILES
/kernel/drv/sparcv9/mpt 64-bit SPARC ELF kernel module
/kernel/drv/amd64/mpt 64-bit x86 ELF kernel module
/kernel/drv/mpt.conf Optional configuration file
ATTRIBUTES
See attributes(7) for descriptions of the following attribute:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ ArchitectureT{ x86, SPARC (Limited to systems with LSI
Fusion family SCSI I/O processors). T}
SEE ALSO
scsi_vhci(4D), driver.conf(5), pci(5), attributes(7), eeprom(8), prt‐
conf(8), stmsboot(8), scsi_abort(9F), scsi_hba_attach_setup(9F),
scsi_ifgetcap(9F), scsi_ifsetcap(9F), scsi_reset(9F),
scsi_sync_pkt(9F), scsi_transport(9F), scsi_device(9S),
scsi_extended_sense(9S), scsi_inquiry(9S), scsi_pkt(9S)
Writing Device Drivers in Oracle Solaris 11.4
ANSI Small Computer System Interface-2 (SCSI-2) (and later revisions).
ANSI Serial-Attached SCSI-2 (SAS2)
SYM53c1030 PCI-SCSI I/O processor Dual Channel Fast-160 — LSI Logic
Inc.
LSISASI1064 PCI-X to 4-port 3 Gb/s SAS Controller - LSI Logic Inc.
LSISASI1068/E 4-Port PCI Express to 3 Gb/s SAS Controller - LSI Logic
Inc.
Sun StorEdge Traffic Manager Installation and Configuration Guide
DIAGNOSTICS
The messages described below are logged and may also appear on the sys‐
tem console.
Device is using a hilevel intr
The device was configured with an interrupt level that cannot be
used with this mtp driver. Check the PCI device.
Map setup failed
The driver was unable to map device registers; check for bad hard‐
ware. Driver did not attach to device; SCSI devices are inaccessi‐
ble.
Cannot map configuration space
The driver was unable to map in the configuration registers. Check
for bad hardware. SCSI devices will be inaccessible.
Attach failed
The driver was unable to attach; usually preceded by another warn‐
ing that indicates why attach failed. These can be considered hard‐
ware failures.
Connected command timeout for Target <id>.
This is usually a SCSI bus problem. Check cables and termination.
Target <id> reducing sync. transfer rate
A data transfer hang or DATA-IN phase parity error was detected.
The driver attempts to eliminate this problem by reducing the data
transfer rate.
Target <id> reverting to async. mode
A second data transfer hang was detected for this target. The
driver attempts to eliminate this problem by reducing the data
transfer rate.
Target <id> disabled wide SCSI mode
A second data phase hang was detected for this target. The driver
attempts to eliminate this problem by disabling wide SCSI mode.
NOTES
The mpt driver supports the parallel SCSI LSI 53c1030 controller. The
LSI 53c1030 controller series supports Wide, Fast and Ultra SCSI 4
mode. The maximum LVD SCSI bandwidth is 320 MB/sec.
The mpt driver exports properties indicating the negotiated transfer
speed per target (target<n>-sync-speed), whether wide bus is supported
(target<n>-wide) for that particular target (target<n>-scsi-options),
and whether tagged queuing has been enabled (target<n>-TQ). The sync-
speed property value indicates the data transfer rate in KB/sec. The
target<n>-TQ and the target<n>-wide property have value 1 (to indicate
that the corresponding capability is enabled for that target), or 0 (to
indicate that the capability is disabled for that target). See prt‐
conf(8) (verbose option) for details on viewing the mpt properties.
scsi, instance #4
Driver properties:
name='target8-TQ' type=int items=1 dev=none
value=00000001
name='target8-wide' type=int items=1 dev=none
value=00000001
name='target8-sync-speed' type=int items=1 dev=none
value=00013880
name='target5-TQ' type=int items=1 dev=none
value=00000001
name='target5-wide' type=int items=1 dev=none
value=00000001
name='target5-sync-speed' type=int items=1 dev=none
value=00013880
name='target4-TQ' type=int items=1 dev=none
value=00000001
name='target4-wide' type=int items=1 dev=none
value=00000001
name='target4-sync-speed' type=int items=1 dev=none
value=00013880
name='pm-components' type=string items=3 dev=none
value='NAME=mpt4' + '0=Off (PCI D3 State)' + '3=On (PCI \
D0 State)'
name='scsi-selection-timeout' type=int items=1 dev=(238,0)
value=000000fa
name='scsi-options' type=int items=1 dev=(238,0)
value=00103ff8
name='scsi-watchdog-tick' type=int items=1 dev=(238,0)
value=0000000a
name='scsi-tag-age-limit' type=int items=1 dev=(238,0)
value=00000002
name='scsi-reset-delay' type=int items=1 dev=(238,0)
value=00000bb8
Oracle Solaris 11.4 27 Nov 2017 mpt(4D)