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