esp(7D) Devices esp(7D)NAMEesp - ESP SCSI Host Bus Adapter Driver
SYNOPSIS
esp@sbus-slot,80000
DESCRIPTION
The esp Host Bus Adapter driver is a SCSA compliant nexus driver that
supports the Emulex family of esp SCSI chips (esp100, esp100A, esp236,
fas101, fas236).
The esp driver supports the standard functions provided by the SCSA
interface. The driver supports tagged and untagged queuing, fast SCSI
(on FAS esp's only), almost unlimited transfer size (using a moving
DVMA window approach), and auto request sense; but it does not support
linked commands.
CONFIGURATION
The esp driver can be configured by defining properties in esp.conf
which override the global SCSI settings. Supported properties are:
scsi-options, target<n>-scsi-options, scsi-reset-delay, scsi-watchdog-
tick, scsi-tag-age-limit, scsi-initiator-id.
target<n>-scsi-options overrides the scsi-options property value for
target<n>. <n> can vary from 0 to 7.
Refer to scsi_hba_attach(9F) for details.
EXAMPLES
Example 1 A sample of esp configuration file.
Create a file /kernel/drv/esp.conf and add this line:
scsi-options=0x78;
This will disable tagged queuing, fast SCSI, and Wide mode for all esp
instances. To disable an option for one specific esp (refer to
driver.conf(4)):
name="esp"
parent="/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000"
reg=0xf,0x800000,0x40
target1-scsi-options=0x58
scsi-options=0x178 scsi-initiator-id=6;
Note that the default initiator ID in OBP is 7 and that the change to
ID 6 will occur at attach time. It may be preferable to change the ini‐
tiator ID in OBP.
The above would set scsi-options for target 1 to 0x58 and for all
other targets on this SCSI bus to 0x178. The physical pathname of the
parent can be determined using the /devices tree or following the link
of the logical device name:
example# ls -l /dev/rdsk/c0t3d0s0
lrwxrwxrwx 1 root root 88 Aug 22 13:29 /dev/rdsk/c0t3d0s0 ->
../../devices/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/
esp@f,800000/sd@3,0:a,raw
The register property values can be determined from prtconf(1M) output
(-v option):
esp, instance #0
....
Register Specifications:
Bus Type=0xf, Address=0x800000, Size=40
To set scsi-options more specifically per target:
target1-scsi-options=0x78;
device-type-scsi-options-list =
"SEAGATE ST32550W", "seagate-scsi-options" ;
seagate-scsi-options = 0x58;
scsi-options=0x3f8;
The above would set scsi-options for target 1 to 0x78 and for all other
targets on this SCSI bus to 0x378 except for one specific disk type
which will have scsi-options set to 0x58.
scsi-options specified per target ID has the highest precedence, fol‐
lowed by scsi-options per device type. To get the inquiry string run
probe-scsi or probe-scsi-all command at the ok prompt before booting
the system.
Global, for example. for all esp instances, scsi-options per bus has
the lowest precedence.
The system needs to be rebooted before the specified scsi-options take
effect.
FILES
/kernel/drv/esp ELF Kernel Module
/kernel/drv/esp.conf Configuration file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬────────────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼────────────────────────────────────┤
│Architecture │SBus-based systems with esp-based │
├─────────────────────────────┼────────────────────────────────────┤
│ │SCSI port and SSHA, SBE/S, FSBE/S, │
├─────────────────────────────┼────────────────────────────────────┤
│ │and DSBE/S SBus SCSI Host Adapter │
│ │options │
└─────────────────────────────┴────────────────────────────────────┘
SEE ALSOprtconf(1M), driver.conf(4), attributes(5), fas(7D), scsi_abort(9F),
scsi_hba_attach(9F), scsi_ifgetcap(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
OpenBoot Command Reference
ANSI Small Computer System Interface-2 (SCSI-2)
ESP Technical Manuals, QLogic Corp.
DIAGNOSTICS
The messages described below are some that may appear on the system
console, as well as being logged.
The first four messages may be displayed while the esp driver is try‐
ing to attach; these messages mean that the esp driver was unable to
attach. All of these messages are preceded by "esp%d", where "%d" is
the instance number of the esp controller.
Device in slave-only slot
The SBus device has been placed in a slave-only slot and will not
be accessible; move to non-slave-only SBus slot.
Device is using a hilevel intr
The device was configured with an interrupt level that cannot be
used with this esp driver. Check the SBus device.
Unable to map registers
Driver was unable to map device registers; check for bad hardware.
Driver did not attach to device; SCSI devices will be inaccessible.
Cannot find dma controller
Driver was unable to locate a dma controller. This is an auto-con‐
figuration error.
Disabled TQ since disconnects are disabled
Tagged queuing was disabled because disconnects were disabled in
scsi-options.
Bad clock frequency- setting 20mhz, asynchronous mode
Check for bad hardware.
Sync pkt failed
Syncing a SCSI packet failed. Refer to scsi_sync_pkt(9F).
Slot %x: All tags in use!!!
The driver could not allocate another tag number. The target
devices do not properly support tagged queuing.
Target %d.%d cannot alloc tag queue\n
The driver could not allocate space for tag queue.
Gross error in esp status (%x)
The driver experienced severe SCSI bus problems. Check cables and
terminator.
Spurious interrupt
The driver received an interrupt while the hardware was not inter‐
rupting.
Lost state in phasemanage
The driver is confused about the state of the SCSI bus.
Unrecoverable DMA error during selection
The DMA controller experienced host SBus problems. Check for bad
hardware.
Bad sequence step (0x%x) in selection
The esp hardware reported a bad sequence step. Check for bad hard‐
ware.
Undetermined selection failure
The selection of a target failed unexpectedly. Check for bad hard‐
ware.
>2 reselection IDs on the bus
Two targets selected simultaneously, which is illegal. Check for
bad hardware.
Reconnect: unexpected bus free
A reconnect by a target failed. Check for bad hardware.
Timeout on receiving tag msg
Suspect target f/w failure in tagged queue handling.
Parity error in tag msg
A parity error was detected in a tag message. Suspect SCSI bus
problems.
Botched tag
The target supplied bad tag messages. Suspect target f/w failure in
tagged queue handling.
Parity error in reconnect msg's
The reconnect failed because of parity errors.
Target <n> didn't disconnect after sending <message>
The target unexpectedly did not disconnect after sending <message>.
No support for multiple segs
The esp driver can only transfer contiguous data.
No dma window?
Moving the DVMA window failed unexpectedly.
No dma window on <type> operation
Moving the DVMA window failed unexpectedly.
Cannot set new dma window
Moving the DVMA window failed unexpectedly.
Unable to set new window at <address> for <type> operation
Moving the DVMA window failed unexpectedly.
Illegal dma boundary? %x
An attempt was made to cross a boundary that the driver could not
handle.
Unwanted data out/in for Target <n>
The target went into an unexpected phase.
Spurious <name> phase from target <n>
The target went into an unexpected phase.
SCSI bus DATA IN phase parity error
The driver detected parity errors on the SCSI bus.
SCSI bus MESSAGE IN phase parity error
The driver detected parity errors on the SCSI bus.
SCSI bus STATUS phase parity error
The driver detected parity errors on the SCSI bus.
Premature end of extended message
An extended SCSI bus message did not complete. Suspect a target f/w
problem.
Premature end of input message
A multibyte input message was truncated. Suspect a target f/w prob‐
lem.
Input message botch
The driver is confused about messages coming from the target.
Extended message <n> is too long
The extended message sent by the target is longer than expected.
<name> message <n> from Target <m> garbled
Target <m> sent message <name> of value <n> which the driver did
not understand.
Target <n> rejects our message <name>
Target <n> rejected a message sent by the driver.
Rejecting message <name> from Target <n>
The driver rejected a message received from target <n>
Cmd dma error
The driver was unable to send out command bytes.
Target <n> refused message resend
The target did not accept a message resend.
Two-byte message <name> <value> rejected
The driver does not accept this two-byte message.
Unexpected selection attempt
An attempt was made to select this host adapter by another initia‐
tor.
Polled cmd failed (target busy)
A polled command failed because the target did not complete out‐
standing commands within a reasonable time.
Polled cmd failed
A polled command failed because of timeouts or bus errors.
Disconnected command timeout for Target <id>.<lun>
A timeout occurred while target/lun was disconnected. This is usu‐
ally a target f/w problem. For tagged queuing targets, <n> commands
were outstanding when the timeout was detected.
Disconnected tagged cmds (<n>) timeout for Target <id>.<lun>
A timeout occurred while target/lun was disconnected. This is usu‐
ally a target f/w problem. For tagged queuing targets, <n> commands
were outstanding when the timeout was detected.
Connected command timeout for Target <id>.<lun>
This is usually a SCSI bus problem. Check cables and termination.
Target <id>.<lun> reverting to async. mode
A data transfer hang was detected. The driver attempts to eliminate
this problem by reducing the data transfer rate.
Target <id>.<lun> reducing sync. transfer rate
A data transfer hang was detected. The driver attempts to eliminate
this problem by reducing the data transfer rate.
Reverting to slow SCSI cable mode
A data transfer hang was detected. The driver attempts to eliminate
this problem by reducing the data transfer rate.
Reset SCSI bus failed
An attempt to reset the SCSI bus failed.
External SCSI bus reset
Another initiator reset the SCSI bus.
WARNINGS
The esp hardware does not support Wide SCSI mode. Only FAS-type esp's
support fast SCSI (10 MB/sec).
NOTES
The esp driver exports properties indicating per target the negotiated
transfer speed (target<n>-sync-speed) and whether tagged queuing has
been enabled (target<n>-TQ). The sync-speed property value is the data
transfer rate in KB/sec. The target-TQ property has no value. The exis‐
tence of the property indicates that tagged queuing has been enabled.
Refer to prtconf(1M) (verbose option) for viewing the esp properties.
dma, instance #3
Register Specifications:
Bus Type=0x2, Address=0x81000, Size=10
esp, instance #3
Driver software properties:
name <target3-TQ> length <0> − <no
value>.
name <target3-sync-speed> length <4>
value <0x00002710>.
name <scsi-options> length <4>
value <0x000003f8>.
name <scsi-watchdog-tick> length <4>
value <0x0000000a>.
name <scsi-tag-age-limit> length <4>
value <0x00000008>.
name <scsi-reset-delay> length <4>
value <0x00000bb8>.
SunOS 5.11 7 Feb 1997 esp(7D)
