xref: /openbsd/share/man/man4/man4.hppa/astro.4 (revision 09467b48)
1.\"	$OpenBSD: astro.4,v 1.3 2007/05/31 19:19:54 jmc Exp $
2.\"
3.\" Copyright (c) 2007 Mark Kettenis <kettenis@openbsd.org>
4.\"
5.\" Permission to use, copy, modify, and distribute this software for any
6.\" purpose with or without fee is hereby granted, provided that the above
7.\" copyright notice and this permission notice appear in all copies.
8.\"
9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16.\"
17.Dd $Mdocdate: May 31 2007 $
18.Dt ASTRO 4 hppa
19.Os
20.Sh NAME
21.Nm astro
22.Nd Astro Memory and I/O controller
23.Sh SYNOPSIS
24.Cd "astro* at mainbus?"
25.Cd "elroy* at astro?"
26.Sh DESCRIPTION
27The
28.Nm
29driver provides support for the Astro memory and I/O controller used
30on systems with PA-8500 and later 64-bit CPUs.
31It functions as a bridge from the Runway bus to
32up to 8 I/O ropes that connect to Elroy chips.
33Astro contains an IOMMU and provides support for cache coherent DMA.
34.Sh SEE ALSO
35.Xr cpu 4 ,
36.Xr elroy 4 ,
37.Xr intro 4 ,
38.Xr runway 4
39.Sh HISTORY
40The
41.Nm
42driver first appeared in
43.Ox 4.2 .
44