NAMEaxe -- ASIX Electronics AX88172/178/772 USB Ethernet driver
SYNOPSISTo 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"
DESCRIPTIONThe 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).
HARDWAREThe axe driver supports ASIX Electronics AX88172/AX88178/AX88772 based USB Ethernet adapters including: AX88172: +
DIAGNOSTICSaxe%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 ALSOaltq(4), arp(4), miibus(4), netintro(4), ng_ether(4), rgephy(4), ifconfig(8) ASIX AX88172 AX88178 and AX88772 data sheets, //www.asix.com.tw.
HISTORYThe axe device driver first appeared in FreeBSD 5.0.
AUTHORSThe axe driver was written by Bill Paul <email@example.com>. AXE(4)