NAME
axe - ASIX Electronics AX88172/178/772 USB Ethernet driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device ehci
device uhci
device ohci
device usb
device miibus
device axe
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
if_axe_load="YES"
DESCRIPTION
The axe driver provides support for USB Ethernet adapters based on the
ASIX Electronics AX88172, AX88178 and AX88772 USB 2.0 chipsets.
The AX88172 and AX88178 are USB 2.0 devices that contain a 10/100
Ethernet MAC with MII interface and are designed to work with both
Ethernet and HomePNA transceivers. The AX88772 will additionally support
10/100/1000 MACs.
These devices will operate with both USB 1.x and USB 2.0 controllers,
however performance with 1.x controllers will be limited since the USB
1.x standard specifies a maximum transfer speed of 12Mbps. Users with
USB 1.x controllers should therefore not expect to actually achieve
100Mbps speeds with these devices.
All chipsets support a 64-bit multicast hash table, single perfect filter
entry for the station address, all-multicast mode and promiscuous mode.
Packets are received and transmitted over separate USB bulk transfer
endpoints.
The axe driver supports the following media types:
autoselect Enable autoselection of the media type and options. The
user can manually override the autoselected mode by adding
media options to the /etc/rc.conf file.
10baseT/UTP Set 10Mbps operation. The mediaopt option can also be used
to enable full-duplex operation. Not specifying full-duplex
implies half-duplex mode.
100baseTX Set 100Mbps (Fast Ethernet) operation. The mediaopt option
can also be used to enable full-duplex operation. Not
specifying full-duplex implies half-duplex mode.
The axe driver supports the following media options:
full-duplex Force full duplex operation. The interface will operate in
half duplex mode if this media option is not specified.
For more information on configuring this device, see ifconfig(8).
HARDWARE
The axe driver supports ASIX Electronics AX88172/AX88178/AX88772 based
USB Ethernet adapters including:
AX88172:
· AboCom UF200
· Acer Communications EP1427X2
· ATen UC210T
· Billionton SnapPort
· Billionton USB2AR
· Buffalo (Melco Inc.) LUA-U2-KTX
· Corega USB2_TX
· D-Link DUBE100
· Goodway GWUSB2E
· JVC MP_PRX1
· LinkSys USB200M
· Netgear FA120
· Sitecom LN-029
· System TALKS Inc. SGC-X2UL
AX88178:
· Belkin F5D5055
· Planex Communications GU1000T
· Sitecom Europe LN-028
AX88772:
· Cisco-Linksys USB200Mv2
· D-Link DUBE100B1
DIAGNOSTICS
axe%d: watchdog timeout A packet was queued for transmission and a
transmit command was issued, however the device failed to acknowledge the
transmission before a timeout expired.
axe%d: no memory for rx list The driver failed to allocate an mbuf for
the receiver ring.
SEE ALSO
altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), ifconfig(8)
ASIX AX88172 AX88178 and AX88772 data sheets, http://www.asix.com.tw.
HISTORY
The axe device driver first appeared in FreeBSD 5.0.
AUTHORS
The axe driver was written by Bill Paul 〈wpaul@windriver.com〉.