144 lines
3.8 KiB
Groff
144 lines
3.8 KiB
Groff
.\" $NetBSD: awi.4,v 1.6 2000/03/22 11:24:33 onoe Exp $
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.\" $FreeBSD$
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.\"
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.Dd October 31, 1999
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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 "AMD PCnetMobile IEEE 802.11 PCMCIA wireless network driver"
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.Sh SYNOPSIS
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.Cd "device awi"
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.Cd "device wlan"
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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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which run AMD PCnetMobile firmware based on AMD 79c930 controller
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with 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 via this shared memory, which can be
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accessed either via PCMCIA memory space or I/O space.
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The
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.Nm
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driver encapsulates all IP and ARP traffic as 802.11 frames.
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.Pp
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The driver works both in infrastructure mode and in adhoc (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 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 wireless nodes to move between access points.
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.Pp
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In adhoc mode, it communicates peer to peer.
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Though it is more efficient to communicate between wireless nodes,
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the coverage is limited spatially due to 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 adhoc mode out of spec for DS radio cards,
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which makes it possible to communicate with adhoc mode of
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.Xr wi 8
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driver.
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The NWID doesn't affect in this mode.
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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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.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
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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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.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.
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.Sh MEDIA SELECTION
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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
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.Em FH1
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media type.
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For each media type,
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.Em adhoc
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mediaopt can be used to indicate the driver to operate in adhoc mode.
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For DS radio cards,
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.Em adhoc , Ns Em flag0
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mediaopt can be used for
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.Xr wi 4
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compatible adhoc mode.
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In addition to these station modes,
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.Em hostap
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mediaopt can be used to create a host-based access point.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "awi0: awi_pccard_probe: bad banner:"
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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 down-then-up interface may 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 card 4 ,
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.Xr cnw 4 ,
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.Xr miibus 4 ,
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.Xr netintro 4 ,
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.Xr pccard 4 ,
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.Xr wi 4 ,
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.Xr wlan 4 ,
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.Xr ifconfig 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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.An -nosplit
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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 Aq sommerfeld@netbsd.org .
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Then the
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.Nm
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driver module was completely rewritten to support cards with DS phy and
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to support adhoc mode by
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.An Atsushi Onoe Aq onoe@netbsd.org .
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