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OSIOP(4) Kernel Interfaces Manual OSIOP(4)

NAME

osiopSymbios/NCR 53C710 SCSI driver

SYNOPSIS

arc

osiop* at jazzio? flags 0x00000

ews4800mips

osiop* at sbdio? flags 0x00000

hppa

osiop0 at gsc? flags 0x00000

mvme68k

osiop0 at pcctwo? ipl 2


scsibus* at osiop?

DESCRIPTION

The osiop driver provides support for the Symbios/NCR 53C710 SCSI controller chip.

For the Symbios/NCR 53C700 SCSI host adapters, use the oosiop(4) driver.

For the Symbios/NCR 53C8xx PCI SCSI host adapters, use the siop(4) or esiop(4) driver.

CONFIGURATION

The osiop driver supports the following flags for use in config(1) files:

bits 0-7:
disable disconnect/reselect for the corresponding SCSI target
bits 8-15:
disable synchronous negotiation for SCSI target
bits 16:
disable DMA interrupts

“Target” is synonymous with SCSI ID number.

Note that SCSI tape drives should be allowed to perform disconnect/reselect or performance will suffer.

HISTORY

osiop driver first appeared in NetBSD 1.6.

The original NCR 53C710 driver appeared in NetBSD 1.0 amiga port, and Izumi Tsutsui <tsutsui@NetBSD.org> modified the driver and made it machine-independent.

May 12, 2001 NetBSD 7.0