awi - BayStack 650 IEEE 802.11FH PCMCIA wireless network
awi* at pcmcia? function ?
The awi driver provides support for wireless adapters based
upon the AMD
802.11 PCnet Mobile firmware. This includes the following
Bay Networks BayStack 650
Bay Networks BayStack 660
Bay Network AirSurfer Pro
Farallon Communications SkyLINE Wireless
The PCnet Mobile design is based on an AMD 79c930 controller, which provides
access to 32kb of memory shared between the controller
host. All host/device interaction is via this shared memory, which can
be accessed either via PCMCIA memory space or I/O space.
The awi driver
encapsulates all IP and ARP traffic as 802.11 frames.
Transmit speed is
fixed at 1Mbps.
The driver currently only works in infrastructure mode, communicating
with an Access Point which serves as a link-layer bridge between an Ethernet
and the wireless network.
This card seems to take between 5 and 20 seconds after it
brought up to synchronize with an AP. When using
dhclient(8) to automatically
configure an address on this card, it may be advisable to delay
the invocation of dhclient for about 10 seconds after the
card is brought
up using ifconfig(8).
awi0: unable to allocate memory space; using i/o only Indicates that the
driver was not able to allocate 32kb of PCMCIA bus address
which to map the device; the driver will use the (slightly
only access methods to read and write to the shared
message is in some sense to be expected and should not be a
alarm. See pcmcia(4) for information on how to increase the
available to the PCMCIA controller.
awi0: selftest failed (code %x) The device failed to pass
awi0: device failed to complete selftest (code %x) The device failed to
complete its self test within 5 seconds.
awi0: device timeout
awi0: timeout waiting for command completion The device
failed to generate
an interrupt to acknowledge a command.
awi0: transmit timeout The device failed to generate an interrupt to acknowledge
a transmitted packet.
awi0: large frame truncated The system handed the driver a
was too large to transmit in one piece.
awi0: device enable failed The system was unable to power
on the card.
awi0: associated with %s, SSID: %s The device has successfully synchronized
with the identified Access Point and is ready to relay
awi0: no recent beacon 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.
awi0: received deauth The Access Point the card was most
with has forgotten about us.
arp(4), ifmedia(4), intro(4), netintro(4), pcmcia(4), hostname.if(5),
Am79C930 PCnet Mobile Single-Chip Wireless LAN Media Access
The awi device driver first appeared in OpenBSD 2.7.
The awi driver was written by Bill Sommerfeld <firstname.lastname@example.org> and
ported to OpenBSD by
Angelos D. Keromytis <email@example.com>
Doesn't support ad-hoc mode or WEP. Round trip times seem
what one might expect.
OpenBSD 3.6 March 20, 2004
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