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