1998-10-16 21:12:07 +00:00
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.\"
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.\" Copyright (c) 1998
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.\" Justin T. Gibbs. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. The name of the author may not be used to endorse or promote products
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.\" derived from this software withough specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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1999-08-28 00:22:10 +00:00
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.\" $FreeBSD$
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1998-10-16 21:12:07 +00:00
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.\"
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.Dd October 16, 1998
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.Dt ADW 4 i386
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.Os FreeBSD
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.Sh NAME
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.Nm adw
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.Nd Advansys PCI 16bit SCSI Host adapter driver
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.Sh SYNOPSIS
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.Cd controller pci0
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.Cd controller adw0
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.Pp
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For one or more SCSI busses:
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.Cd controller scbus0 at adw0
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.Sh DESCRIPTION
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This driver provides access to the 16bit
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.Tn SCSI
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bus connected to the Advanced Systems Products, Inc.
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.Tn ASC3550
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as found on the ABP940UW SCSI Host Adapter board. This chip
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supports, Ultra SCSI (20MHz), 16bit transfers, tagged queueing,
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and up to 253 concurrent SCSI transactions.
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.Pp
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Per target configuration performed in the
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.Tn AdvanceWare
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menu, which is accessible at boot,
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is honored by this driver.
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This includes synchronous/asynchronous transfers,
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maximum synchronous negotiation rate, wide transfers, disconnection,
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tagged queueing, and the host adapter's SCSI ID.
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The global setting for the maximum number of tagged transactions allowed
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per target is not honored as the CAM SCSI system will automatically determine
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the maximum number of tags a device can receive as well as guarantee fair
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resource allocation among devices.
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.Sh SEE ALSO
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.Xr adv 4 ,
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.Xr cd 4 ,
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.Xr da 4 ,
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1999-08-15 10:48:36 +00:00
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.Xr sa 4 ,
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.Xr scsi 4
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1998-10-16 21:12:07 +00:00
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.Sh AUTHORS
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The
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.Nm
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driver was ported by
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.An Justin T. Gibbs
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from the Linux driver written by
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.An Bob Frey
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of Advanced System Products, Inc. Many thanks to AdvanSys for providing
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the original driver under a suitable license for use in FreeBSD.
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.Sh HISTORY
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The
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.Nm
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driver appeared in
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.Fx 3.0 .
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