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xl - 3Com Etherlink XL and Fast Etherlink XL Ethernet device driver



      xl - 3Com Etherlink XL and Fast Etherlink XL Ethernet device driver


      To compile this driver into the kernel, place the following lines in your
      kernel configuration file:
            device miibus
            device xl
      Alternatively, to load the driver as a module at boot time, place the
      following line in loader.conf(5):


      The xl driver provides support for PCI Ethernet adapters and embedded
      controllers based on the 3Com "boomerang," "cyclone," "hurricane" and
      "tornado" bus-master Etherlink XL chips.
      The Etherlink XL chips support built-in 10baseT, 10base2 and 10base5
      transceivers as well as an MII bus for externally attached PHY
      transceivers.  The 3c905 series typically uses a National Semiconductor
      NS 83840A 10/100 PHY for 10/100 Mbps support in full or half-duplex.  The
      3c905B adapters have built-in autonegotiation logic mapped onto the MII
      for compatibility with previous drivers.  Fast Etherlink XL adapters such
      as the 3c905-TX and 3c905B-TX are capable of 10 or 100Mbps data rates in
      either full or half duplex and can be manually configured for any sup‐
      ported mode or automatically negotiate the highest possible mode with a
      link partner.
      The xl driver supports the following media types:
      autoselect            Enable autoselection of the media type and options.
                            Note that this option is only available with the
                            3c905 and 3c905B adapters with external PHYs or
                            built-in autonegotiation logic.  For 3c900
                            adapters, the driver will choose the mode specified
                            in the EEPROM.  The user can change this by adding
                            media options to the /etc/rc.conf file.
      10baseT/UTP           Set 10Mbps operation.  The mediaopt option can also
                            be used to select either full-duplex or half-duplex
      100baseTX             Set 100Mbps (Fast Ethernet) operation.  The
                            mediaopt option can also be used to select either
                            full-duplex or half-duplex modes.
      10base5/AUI           Enable AUI transceiver (available only on COMBO
      10base2/BNC           Enable BNC coax transceiver (available only on
                            COMBO cards).
      The xl driver supports the following media options:
      full-duplex           Force full duplex operation
      half-duplex           Force half duplex operation.
      Note that the 100baseTX media type is only available if supported by the
      adapter.  For more information on configuring this device, see


      The xl driver supports the following hardware:
            3Com 3c900-TPO
            3Com 3c900-COMBO
            3Com 3c905-TX
            3Com 3c905-T4
            3Com 3c900B-TPO
            3Com 3c900B-TPC
            3Com 3c900B-FL
            3Com 3c900B-COMBO
            3Com 3c905B-T4
            3Com 3c905B-TX
            3Com 3c905B-FX
            3Com 3c905B-COMBO
            3Com 3c905C-TX
            3Com 3c980, 3c980B, and 3c980C server adapters
            3Com 3cSOHO100-TX OfficeConnect adapters
            3Com 3c450 HomeConnect adapters
            3Com 3c555, 3c556 and 3c556B mini-PCI adapters
            3Com 3C3SH573BT, 3C575TX, 3CCFE575BT, 3CXFE575BT, 3CCFE575CT,
          3CXFE575CT, 3CCFEM656, 3CCFEM656B, and 3CCFEM656C, 3CXFEM656,
          3CXFEM656B, and 3CXFEM656C CardBus adapters
            3Com 3c905-TX, 3c905B-TX 3c905C-TX, 3c920B-EMB, and 3c920B-EMB-WNM
          embedded adapters
      Both the 3C656 family of CardBus cards and the 3C556 family of MiniPCI
      cards have a built-in proprietary modem.  Neither the xl driver nor any
      other FreeBSD driver supports this modem.


      xl%d: couldn     t map memory  A fatal initialization error has occurred.
      xl%d: couldn     t map interrupt  A fatal initialization error has occurred.
      xl%d: device timeout  The device has stopped responding to the network,
      or there is a problem with the network connection (cable).
      xl%d: no memory for rx list  The driver failed to allocate an mbuf for
      the receiver ring.
      xl%d: no memory for tx list  The driver failed to allocate an mbuf for
      the transmitter ring when allocating a pad buffer or collapsing an mbuf
      chain into a cluster.
      xl%d: command never completed!  Some commands issued to the 3c90x ASIC
      take time to complete: the driver is supposed to wait until the ’command
      in progress’ bit in the status register clears before continuing.  In
      rare instances, this bit may not clear.  To avoid getting caught in an
      infinite wait loop, the driver only polls the bit for a finite number of
      times before giving up, at which point it issues this message.  This mes‐
      sage may be printed during driver initialization on slower machines.  If
      you see this message but the driver continues to function normally, the
      message can probably be ignored.
      xl%d: chip is in D3 power state -- setting to D0  This message applies
      only to 3c905B adapters, which support power management.  Some operating
      systems place the 3c905B in low power mode when shutting down, and some
      PCI BIOSes fail to bring the chip out of this state before configuring
      it.  The 3c905B loses all of its PCI configuration in the D3 state, so if
      the BIOS does not set it back to full power mode in time, it will not be
      able to configure it correctly.  The driver tries to detect this condi‐
      tion and bring the adapter back to the D0 (full power) state, but this
      may not be enough to return the driver to a fully operational condition.
      If you see this message at boot time and the driver fails to attach the
      device as a network interface, you will have to perform second warm boot
      to have the device properly configured.
      Note that this condition only occurs when warm booting from another oper‐
      ating system.  If you power down your system prior to booting FreeBSD,
      the card should be configured correctly.
      xl%d: WARNING: no media options bits set in the media options register!
      This warning may appear when using the driver on some Dell Latitude dock‐
      ing stations with built-in 3c905-TX adapters.  For whatever the reason,
      the ’MII available’ bit in the media options register on this particular
      equipment is not set, even though it should be (the 3c905-TX always uses
      an external PHY transceiver).  The driver will attempt to guess the
      proper media type based on the PCI device ID word.  The driver makes a
      lot of noise about this condition because the author considers it a manu‐
      facturing defect.
      altq(4), arp(4), cardbus(4), miibus(4), netintro(4), ng_ether(4),
      pccard(4), polling(4), ifconfig(8)


      The xl device driver first appeared in FreeBSD 3.0.


      The xl driver was written by Bill Paul 〈〉.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.