1 .\" $NetBSD: awi.4,v 1.6 2000/03/22 11:24:33 onoe Exp $
9 .Nd "AMD PCnetMobile IEEE 802.11 PCMCIA wireless network driver"
16 driver supports various IEEE 802.11 wireless cards
17 which run AMD PCnetMobile firmware based on AMD 79c930 controller
18 with Intersil (formerly Harris) PRISM radio chipset.
19 It provides access to 32kb of memory shared between the controller
21 All host/device interaction is via this shared memory, which can be
22 accessed either via PCMCIA memory space or I/O space.
25 driver encapsulates all IP and ARP traffic as 802.11 frames.
27 The driver works both in infrastructure mode and in adhoc (independent
30 In infrastructure mode, it communicates with an Access Point
31 which serves as a link-layer bridge between an Ethernet and
33 An access point also provides roaming capability
34 which allows wireless nodes to move between access points.
36 In adhoc mode, it communicates peer to peer.
37 Though it is more efficient to communicate between wireless nodes,
38 the coverage is limited spatially due to lack of roaming capability.
40 In addition to these two modes in the IEEE 802.11 specification, the
42 driver also supports a variant of adhoc mode out of spec for DS radio cards,
43 which makes it possible to communicate with adhoc mode of
46 The NWID does not affect in this mode.
48 For more information on configuring this device, see
51 Cards supported by the
55 .Bl -tag -width BayStack_650x -offset indent
57 1Mbps Frequency Hopping PCCARD adapter
59 2Mbps Direct Sequence PCCARD adapter
61 2Mbps Direct Sequence PCCARD adapter
63 2Mbps Direct Sequence PCCARD adapter
65 2Mbps Direct Sequence PCCARD adapter
66 .It Netwave AirSurfer Plus
67 1Mbps Frequency Hopping PCCARD adapter
68 .It Netwave AirSurfer Pro
69 2Mbps Direct Sequence PCCARD adapter
71 2Mbps Direct Sequence PCCARD adapter
73 2Mbps Direct Sequence PCCARD adapter
76 The original Xircom Netwave AirSurfer is supported by the
84 media types, while the FH cards support
89 mediaopt can be used to indicate the driver to operate in adhoc mode.
91 .Em adhoc , Ns Em flag0
92 mediaopt can be used for
94 compatible adhoc mode.
95 In addition to these station modes,
97 mediaopt can be used to create a host-based access point.
100 .It "awi0: awi_pccard_probe: bad banner:"
101 The device failed to initialize its firmware.
102 .It "awi0: failed to complete selftest (%s)"
103 The device failed to complete its self test.
104 In some circumstances, resetting device after power on fails.
105 Re-inserting the card or down-then-up interface may be helpful.
106 .It "awi0: transmit timeout"
107 The device failed to generate an interrupt to acknowledge a
109 .It "awi0: failed to lock interrupt"
110 The system was unable to obtain the lock to access shared memory.
111 .It "awi0: command %d failed %x"
112 The device failed to complete the request from the system.
125 .%T Am79C930 PCnet Mobile Single-Chip Wireless LAN Media Access Controller
126 .%O http://www.amd.com
131 device driver first appeared in
135 The initial version of the
137 driver was written by
138 .An Bill Sommerfeld Aq sommerfeld@netbsd.org .
141 driver module was completely rewritten to support cards with DS phy and
142 to support adhoc mode by
143 .An Atsushi Onoe Aq onoe@netbsd.org .