1.\"	$OpenBSD: sw.4,v 1.7 2003/06/19 20:29:51 deraadt Exp $
2.\"
3.\" Copyright (c) 1998 The OpenBSD Project
4.\" All rights reserved.
5.\"
6.\"
7.Dd March 4, 1998
8.Dt SW 4 sparc
9.Os
10.Sh NAME
11.Nm sw
12.Nd NCR 5380 "SCSI Weird" Sun 4/100 on-board SCSI controller
13.Sh SYNOPSIS
14.Cd "sw0     at obio0 addr 0x0a000000 level 3" Pq sun4/100
15.Cd "#sw0     at obio0 addr 0x0a000000 level 3 flags 0x07" Pq sun4/100
16.Cd "scsibus* at sw?"
17.Sh DESCRIPTION
18The
19.Nm
20is the Sun 4/100 on-board SCSI controller based on the NCR 5380 chip, found
21only on Sun 4/100 workstations.
22The
23.Nm
24driver is actually implemented as part of the
25.Xr si 4
26driver.
27.Sh DEVICE FLAGS
28.Bl -tag -width 12n -compact
29.It 0x01
30Use DMA (polled)
31.It 0x02
32Use DMA completion interrupts
33.It 0x04
34Allow disconnect/reconnect
35.El
36.Pp
37The
38.Nm
39device flags may be OR'd together to enable any combination of
40the features listed above.
41If no flags are specified, the device will use polled DMA by default.
42.Sh SEE ALSO
43.Xr cd 4 ,
44.Xr ch 4 ,
45.Xr esp 4 ,
46.Xr intro 4 ,
47.Xr scsi 4 ,
48.Xr sd 4 ,
49.Xr si 4 ,
50.Xr ss 4 ,
51.Xr \&st 4 ,
52.Xr uk 4
53.Sh HISTORY
54The
55.Nm
56driver first appeared in
57.Nx .
58.Sh BUGS
59The
60.Nm
61driver only supports polled DMA at this time.
62