cpqncr(7D)

NAME | DESCRIPTION | CONFIGURATION | FILES | ATTRIBUTES | SEE ALSO

NAME

cpqncr– low-level module for Compaq 32-Bit Fast-Wide SCSI-2 EISA/PCI (825) and Compaq Wide-Ultra SCSI PCI (875) Controllers

DESCRIPTION

The cpqncr module provides low-level interface routines between the common disk/tape I/O subsystem and the Compaq 825/875 SCSI (Small Computer System Interface) controllers.

The cpqncr module can be configured for disk and streaming tape support for one or more Compaq 825/875 controllers. Each controller should be the sole initiator on a SCSI bus. Auto configuration code determines if the adapter is present at the configured address and what types of devices are attached to it.

CONFIGURATION

The driver attempts to initialize itself in accordance with the information found in the configuration file, cpqncr.conf. The relevant user configurable items in this file are as follows:

debug_flag

This property enables or disables driver debug messages. These messages are not displayed by default. Setting the value to 1 enables debug messages; setting it to 0 disables it.

alarm_msg_enable

This property enables alarm messages displayed for Storage System faults. Alarm messages are enabled by setting the value to 1 and disabled by setting it to 0. These messages are disabled by default.

tag_enable

This property enables or disables tag queueing support by the driver. Tagged Queueing is disabled by default. Tagged queueing is enabled by setting the value to 1 and disabled by setting the value to 0.

queue_depth

This property sets the number of active requests the driver can handle for a controller. The maximum and default value is 37 and the minimum value is 13. This can be decreased for supporting multiple controllers.

board_id

This property enables support for Compaq SCSI controllers other than Compaq 825/875 controllers. The board ID (Vendor and Device ID) must be specified for the driver to support the controller.

FILES

/kernel/drv/cpqncr.conf

configuration file for the cpqncr driver

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Architecture	IA

SEE ALSO

driver.conf(4), attributes(5)

NAME | DESCRIPTION | CONFIGURATION | FILES | ATTRIBUTES | SEE ALSO