.\" $NetBSD: awi.4,v 1.20 2003/05/06 10:46:42 jmmv Exp $ .\" .\" Copyright (c) 1999,2000,2001 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Bill Sommerfeld .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the NetBSD .\" Foundation, Inc. and its contributors. .\" 4. Neither the name of The NetBSD Foundation nor the names of its .\" contributors may be used to endorse or promote products derived .\" from this software without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .Dd September 18, 2001 .Dt AWI 4 .Os .Sh NAME .Nm awi .Nd AMD PCnetMobile IEEE 802.11 PCMCIA wireless network driver .Sh SYNOPSIS .Cd "awi* at pcmcia? function ?" .Sh DESCRIPTION The .Nm driver supports various IEEE 802.11 wireless cards which run AMD PCnetMobile firmware based on AMD 79c930 controller with Intersil (formerly Harris) PRISM radio chipset. It provides access to 32kb of memory shared between the controller and the host. All host/device interaction is via this shared memory, which can be accessed either via PCMCIA memory space or I/O space. The .Nm driver encapsulates all IP and ARP traffic as 802.11 frames. .Pp The driver works both in infrastructure mode and in ad-hoc (independent BSS) mode. .Pp In infrastructure mode, it communicates with an Access Point which serves as a link-layer bridge between an Ethernet and the wireless network. An access point also provides roaming capability which allows wireless node to move between access points. .Pp In ad-hoc mode, it communicates peer to peer. Though it is more efficient to communicate between wireless nodes, the coverage is limited spatially due to lack of roaming capability. .Pp In addition to these two mode in IEEE 802.11 specification, the .Nm driver also supports a variant of ad-hoc mode out of spec for DS radio cards, which makes possible to communicate with WaveLAN ad-hoc mode of .Xr wi 4 driver. The NWID doesn't affect in this mode. .Pp Another mode added to the .Nm driver can be used with old Melco access point with 2Mbps card, which actually use IEEE 802.11 ad-hoc mode with encapsulation of raw Ethernet packet including header in 802.11 frames. .Pp For more information on configuring this device, see .Xr ifconfig 8 and .Xr ifmedia 4 . .Sh HARDWARE Cards supported by the .Nm driver include: .Pp .Bl -tag -width BayStack_650x -offset indent -compact .It BayStack 650 1Mbps Frequency Hopping PCCARD adapter .It BayStack 660 2Mbps Direct Sequence PCCARD adapter .It Icom SL-200 2Mbps Direct Sequence PCCARD adapter .It Melco WLI-PCM 2Mbps Direct Sequence PCCARD adapter .It NEL SSMagic 2Mbps Direct Sequence PCCARD adapter .It Netwave AirSurfer Plus 1Mbps Frequency Hopping PCCARD adapter .It Netwave AirSurfer Pro 2Mbps Direct Sequence PCCARD adapter .It Nokia C020 WLAN 2Mbps Direct Sequence PCCARD adapter .It Farallon SkyLINE 2Mbps Direct Sequence PCCARD adapter .El .Pp The original Xircom Netwave AirSurfer is supported by the .Xr cnw 4 driver, and the PRISM-II cards are supported by the .Xr wi 4 driver. .Sh MEDIA SELECTION In addition to default .Em Auto media type, the DS cards support .Em DS1 and .Em DS2 media types, while the FH cards support .Em FH1 media type. For each media type, .Em adhoc mediaopt can be used to indicate the driver to operate in ad-hoc mode. The .Em flag0 mediaopt should be used only with old access point which operates in IBSS mode. For DS radio cards, .Em adhoc,flag0 mediaopt can be used for .Xr wi 4 compatible WaveLAN ad-hoc mode. .Pp To configure more detailed parameters for the .Nm driver, .Xr wiconfig 8 can be used. .Sh DIAGNOSTICS .Bl -diag .It "awi0: unable to allocate memory space; using i/o only" Indicates that the driver was not able to allocate 32kb of PCMCIA bus address space into which to map the device; the driver will use the (slightly slower) i/o-space only access methods to read and write to the shared memory. Since by default, .Nx only allocates 16kb of address space per PCMCIA controller, this message is in some sense to be expected and should not be a cause for alarm. See .Xr pcmcia 4 for information on how to increase the memory available to the PCMCIA controller. .It "awi0: failed to complete selftest (%s)" The device failed to complete its self test. In some circumstances, resetting device after power on fails. Re-inserting the card or down-then-up interface may be helpful. .It "awi0: associated with %s ssid %s channel %d signal %d" The device has successfully synchronized with the identified Access Point or BSS and is ready to relay traffic. .It "awi0: authentication failed (reason %d)" .It "awi0: association failed (reason %d)" The access point refuses the authentication or association request from the device. .It "awi0: no recent beacons from %s; rescanning" The device has not heard a beacon from its currently associated Access Point recently, and is looking for a new access point. .It "awi0: transmit timeout" The device failed to generate an interrupt to acknowledge a transmitted packet. .It "awi0: failed to lock interrupt" The system was unable to obtain the lock to access shared memory. .It "awi0: command %d failed %x" The device failed to complete the request from the system. .El .Sh SEE ALSO .Xr arp 4 , .Xr cnw 4 , .Xr ifmedia 4 , .Xr netintro 4 , .Xr pcmcia 4 , .Xr wi 4 , .Xr ifconfig 8 , .Xr wiconfig 8 .Rs .%T Am79C930 PCnet Mobile Single-Chip Wireless LAN Media Access Controller .%O http://www.amd.com .Re .Sh HISTORY The .Nm device driver first appeared in .Nx 1.5 . .Sh AUTHORS The initial version of the .Nm driver was written by .An Bill Sommerfeld .Aq sommerfeld@NetBSD.org . Then the .Nm driver module completely rewritten to support cards with DS phy and to support ad-hoc mode by .An Atsushi Onoe .Aq onoe@NetBSD.org .