NAME

csa - low-level module for Compaq SMART SCSI Array Controller

DESCRIPTION

The csa module provides low-level interface routines between the common disk I/O subsystem and the Compaq SMART SCSI (Small Computer System Interface) Array controllers. The csa module can be configured for disk support for one or more host adapter boards. Auto configuration code determines if the adapter is present at the configured address and what types of logical devices are configured on it.

CONFIGURATION

The driver attempts to initialize itself in accordance with the information found in the configuration file, /kernel/drv/csa.conf and with the information recorded in the EISA NVRAM. Each controller can support up to eight logical devices. The number and sizes of the logical devices are specified via the Compaq EISA Configuration Utility (ECU).

The user-configurable items in csa.conf are:

product_id

The EISA product ID and mask values which the controller will use to detect the presence of a supported SMART controller board. This property is a comma separated list of ID and mask values. Currently only the SMART board is supported. Although this property can be modified to include the product IDs of the older IDA , IDA-2 and IAES boards, those boards are not officially supported.

nccbs

The number of buffers which the driver should allocate to each controller board. The value specified should be between 16 and 255 .

FILES

/kernel/drv/csa.conf

configuration file for csa.

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Architecture	x86

SEE ALSO

attributes(5)