194 lines
6.3 KiB
Groff
194 lines
6.3 KiB
Groff
.\" $NetBSD: awi.4,v 1.26 2006/01/12 21:05:18 wiz Exp $
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.\"
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.\" Copyright (c) 1999,2000,2001 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Bill Sommerfeld
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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. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.Dd January 2, 2006
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.Dt AWI 4
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.Os
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.Sh NAME
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.Nm awi
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.Nd
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AMD PCnetMobile IEEE 802.11 PCMCIA wireless network driver
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.Sh SYNOPSIS
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.Cd "awi* at pcmcia? function ?"
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.Sh DESCRIPTION
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The
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.Nm
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driver supports various IEEE 802.11 wireless cards
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that run AMD PCnetMobile firmware based on the AMD 79c930 controller
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with the Intersil (formerly Harris) PRISM radio chipset.
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It provides access to 32kb of memory shared between the controller
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and the host.
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All host/device interaction is accomplished via this shared memory, which
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can be accessed either via PCMCIA or I/O memory spaces.
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The
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.Nm
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driver encapsulates all IP and ARP traffic in 802.11 frames.
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.Pp
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The driver works both in infrastructure mode and in ad-hoc (independent
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BSS) mode.
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.Pp
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In infrastructure mode, it communicates with an Access Point,
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which serves as a link-layer bridge between an Ethernet segment and
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the wireless network.
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An access point also provides roaming capability,
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which allows a wireless node to move between access points.
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.Pp
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In ad-hoc mode, the device communicates peer to peer.
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Although it is more efficient to communicate between wireless nodes,
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the coverage is limited spatially due to the lack of roaming capability.
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.Pp
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In addition to these two modes in the IEEE 802.11 specification, the
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.Nm
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driver also supports a variant of ad-hoc mode outside of the spec for
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DS radio cards.
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This makes it possible to communicate with the WaveLAN ad-hoc mode of
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.Xr wi 4
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driver.
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The NWID has no effect in this mode.
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.Pp
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Another mode added to the
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.Nm
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driver can be used with old Melco access points with 2Mbps cards.
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This mode actually uses the IEEE 802.11 ad-hoc mode with encapsulation of
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raw Ethernet packets (including headers) in 802.11 frames.
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8
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and
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.Xr ifmedia 4 .
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.Sh HARDWARE
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Cards supported by the
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.Nm
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driver include:
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.Pp
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.Bl -tag -width BayStack_650x -offset indent -compact
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.It BayStack 650
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1Mbps Frequency Hopping PCCARD adapter
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.It BayStack 660
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2Mbps Direct Sequence PCCARD adapter
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.It Icom SL-200
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2Mbps Direct Sequence PCCARD adapter
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.It Melco WLI-PCM
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2Mbps Direct Sequence PCCARD adapter
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.It NEL SSMagic
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2Mbps Direct Sequence PCCARD adapter
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.It Netwave AirSurfer Plus
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1Mbps Frequency Hopping PCCARD adapter
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.It Netwave AirSurfer Pro
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2Mbps Direct Sequence PCCARD adapter
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.It Nokia C020 WLAN
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2Mbps Direct Sequence PCCARD adapter
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.It Farallon SkyLINE
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2Mbps Direct Sequence PCCARD adapter
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.It Zoom Air Model 4000
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.El
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.Pp
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The original Xircom Netwave AirSurfer is supported by the
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.Xr cnw 4
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driver, and the PRISM-II cards are supported by the
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.Xr wi 4
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driver.
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.Sh MEDIA SELECTION
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In addition to default
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.Em Auto
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media type,
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the DS cards support
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.Em DS1
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and
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.Em DS2
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media types, while the FH cards support the
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.Em FH1
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media type.
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For each media type, the
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.Em adhoc
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mediaopt can be used to indicate to the driver to operate in ad-hoc mode.
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The
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.Em flag0
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mediaopt
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should be used only with old access points, which operate in IBSS mode.
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For DS radio cards, the
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.Em adhoc,flag0
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mediaopt can be used for
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.Xr wi 4
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compatible WaveLAN ad-hoc mode.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "awi0: no suitable CIS info found"
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The device cannot be mapped due to a resource conflict.
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Or, the device failed to initialize its firmware.
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.It "awi0: failed to complete selftest (%s)"
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The device failed to complete its self test.
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In some circumstances, resetting device after power on fails.
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Re-inserting the card or setting the interface up and then down again
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(using
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.Xr ifconfig 8 )
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may also be helpful.
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.It "awi0: transmit timeout"
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The device failed to generate an interrupt to acknowledge a
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transmitted packet.
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.It "awi0: failed to lock interrupt"
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The system was unable to obtain the lock to access shared memory.
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.It "awi0: command %d failed %x"
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The device failed to complete the request from the system.
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.El
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr cnw 4 ,
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.Xr ifmedia 4 ,
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.Xr netintro 4 ,
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.Xr pcmcia 4 ,
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.Xr wi 4 ,
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.Xr ifconfig 8 ,
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.Xr wiconfig 8
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.Rs
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.%T Am79C930 PCnet Mobile Single-Chip Wireless LAN Media Access Controller
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.%O http://www.amd.com
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.Re
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Nx 1.5 .
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.Sh AUTHORS
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The initial version of the
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.Nm
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driver was written by
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.An Bill Sommerfeld
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.Aq sommerfeld@NetBSD.org .
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It was then completely rewritten to support cards with the DS phy and
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ad-hoc mode by
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.An Atsushi Onoe
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.Aq onoe@NetBSD.org .
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