OSIOP(4)

OSIOP(4) | Kernel Interfaces Manual | OSIOP(4)

# NAME

osiop — Symbios/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.

# SEE ALSO

cd(4), ch(4), esiop(4), intro(4), oosiop(4), scsi(4), sd(4), siop(4), ss(4), st(4), uk(4), scsipi(9)

# 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