NAME
sw —
NCR 5380 SCSI Weird Sun 4/100 on-board
SCSI controller
SYNOPSIS
sw0 at obio0 addr 0xfa000000 level 3
(sun4/100)
#sw0 at obio0 addr 0xfa000000 level 3 flags 0x07
(sun4/100)
DESCRIPTION
The sw is the Sun 4/100 on-board SCSI
controller based on the NCR 5380 chip, found only on Sun 4/100 workstations.
The sw driver is actually implemented as part of the
si(4)
driver.
DEVICE FLAGS
- 0x01
- Use DMA (polled)
- 0x02
- Use DMA completion interrupts
- 0x04
- Allow disconnect/reconnect
The sw device flags may be OR'd together
to enable any combination of the features listed above. If no flags are
specified, the device will use polled DMA by default.
SEE ALSO
cd(4), ch(4), esp(4), intro(4), scsi(4), sd(4), si(4), st(4), uk(4)
HISTORY
The sw driver first appeared in
NetBSD.
BUGS
The sw driver only supports polled DMA at
this time.