1.\" $NetBSD: astro.4,v 1.2 2017/02/17 22:24:46 christos Exp $ 2.\" OpenBSD: astro.4,v 1.3 2007/05/31 19:19:54 jmc Exp 3.\" 4.\" Copyright (c) 2007 Mark Kettenis <kettenis@openbsd.org> 5.\" 6.\" Permission to use, copy, modify, and distribute this software for any 7.\" purpose with or without fee is hereby granted, provided that the above 8.\" copyright notice and this permission notice appear in all copies. 9.\" 10.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17.\" 18.Dd February 17, 2017 19.Dt ASTRO 4 hppa 20.Os 21.Sh NAME 22.Nm astro 23.Nd Astro Memory and I/O controller 24.Sh SYNOPSIS 25.Cd "astro* at mainbus?" 26.Cd "elroy* at astro?" 27.Sh DESCRIPTION 28The 29.Nm 30driver provides support for the Astro memory and I/O controller used 31on systems with PA-8500 and later 64-bit CPUs. 32It functions as a bridge from the Runway bus to 33up to 8 I/O ropes that connect to Elroy chips. 34Astro contains an IOMMU and provides support for cache coherent DMA. 35.Sh SEE ALSO 36.Xr hppa/cpu 4 , 37.Xr hppa/elroy 4 , 38.Xr hppa/intro 4 39.\" .Xr runway 4 40.Sh HISTORY 41The 42.Nm 43driver first appeared in 44.Ox 4.2 . 45It was ported to 46.Nx 6.0 47by Nick Hudson. 48