ed
— NE-2000 and
WD-80x3 Ethernet driver
To compile this driver into the kernel, place the following lines
in your kernel configuration file:
device miibus
device ed
Alternatively, to load the driver as a module at boot time, place
the following line in loader.conf(5):
The ed
driver is not present in
FreeBSD 13.0 and later. See
https://github.com/freebsd/fcp/blob/master/fcp-0101.md for more
information.
The ed
driver provides support for 8 and
16bit Ethernet cards that are based on the National Semiconductor DS8390 and
similar NICs manufactured by other companies. The ed
driver also supports many PC Card chips which interface via MII to a PHY.
Axiom's AX88790, AX88190 and AX88190A; DLink's DL10019 and DL10022; and
Tamarack's TC5299J chips all support internal or external MII/PHY
combinations. Realtek's PCI and ISA RTL80x9-based cards are also supported.
For these chipsets, autonegotiation and status reporting are supported.
In addition to the standard port and IRQ specifications, the
ed
driver also supports a number of
flags
which can force 8/16bit mode, enable/disable
multi-buffering, and select the default interface type (AUI/BNC, and for
cards with twisted pair, AUI/10BaseT).
The flags
are a bit field, and are
summarized as follows:
0x01
- Disable transceiver. On those cards which support it, this flag causes the
transceiver to be disabled and the AUI connection to be used by
default.
0x02
- Force 8bit mode. This flag forces the card to 8bit mode regardless of how
the card identifies itself. This may be needed for some clones which
incorrectly identify themselves as 16bit, even though they only have an
8bit interface. This flag takes precedence over force 16bit mode.
0x04
- Force 16bit mode. This flag forces the card to 16bit mode regardless of
how the card identifies itself. This may be needed for some clones which
incorrectly identify themselves as 8bit, even though they have a 16bit ISA
interface.
0x08
- Disable transmitter multi-buffering. This flag disables the use of
multiple transmit buffers and may be necessary in rare cases where packets
are sent out faster than a machine on the other end can handle (as
evidenced by severe packet lossage). Some
(non-FreeBSD :-)) machines
have terrible Ethernet performance and simply cannot cope with 1100K+ data
rates. Use of this flag also provides one more packet worth of receiver
buffering, and on 8bit cards, this may help reduce receiver lossage.
When using a 3c503 card, the AUI connection may be selected by
specifying the link2
option to
ifconfig(8) (BNC is the default).
The ed
driver supports the following
Ethernet NICs:
- 3Com 3c503 Etherlink II (
options ED_3C503
)
- AR-P500 Ethernet
- Accton EN1644 (old model), EN1646 (old model), EN2203 (old model) (110pin)
(flags 0xd00000)
- Accton EN2212/EN2216/UE2216
- Allied Telesis CentreCOM LA100-PCM_V2
- AmbiCom 10BaseT card (8002, 8002T, 8010 and 8610)
- Bay Networks NETGEAR FA410TXC Fast Ethernet
- Belkin F5D5020 PC Card Fast Ethernet
- Billionton LM5LT-10B Ethernet/Modem PC Card
- Billionton LNT-10TB, LNT-10TN Ethernet PC Card
- Bromax iPort 10/100 Ethernet PC Card
- Bromax iPort 10 Ethernet PC Card
- Buffalo LPC2-CLT, LPC3-CLT, LPC3-CLX, LPC4-TX, LPC-CTX PC Card
- Buffalo LPC-CF-CLT CF Card
- CNet BC40 adapter
- Compex Net-A adapter
- Compex RL2000
- Corega Ether PCC-T/EtherII PCC-T/FEther PCC-TXF/PCC-TXD PCC-T/Fether II
TXD
- Corega LAPCCTXD (TC5299J)
- CyQ've ELA-010
- DEC EtherWorks DE305
- Danpex EN-6200P2
- D-Link DE-660, DE-660+
- D-Link IC-CARD/IC-CARD+ Ethernet
- ELECOM Laneed LD-CDL/TX, LD-CDF, LD-CDS, LD-10/100CD, LD-CDWA
(DP83902A)
- Hawking PN652TX PC Card (AX88790)
- HP PC Lan+ 27247B and 27252A (
options ED_HPP
)
- IBM Creditcard Ethernet I/II
- I-O DATA ET2/T-PCI
- I-O DATA PCLATE
- Kingston KNE-PC2, CIO10T, KNE-PCM/x Ethernet
- KTI ET32P2 PCI
- Linksys EC2T/PCMPC100/PCM100, PCMLM56
- Linksys EtherFast 10/100 PC Card, Combo PCMCIA Ethernet Card (PCMPC100
V2)
- MACNICA Ethernet ME1 for JEIDA
- MELCO LGY-PCI-TR
- MELCO LPC-T/LPC2-T/LPC2-CLT/LPC2-TX/LPC3-TX/LPC3-CLX
- NDC Ethernet Instant-Link
- National Semiconductor InfoMover NE4100
- NetGear FA-410TX
- NetVin NV5000SC
- Network Everywhere Ethernet 10BaseT PC Card
- New Media LANSurfer 10+56 Ethernet/Modem
- New Media LANSurfer
- Novell NE1000/NE2000/NE2100
- PLANEX ENW-8300-T
- PLANEX FNW-3600-T
- Psion 10/100 LANGLOBAL Combine iT
- RealTek 8019
- RealTek 8029
- Relia Combo-L/M-56k PC Card
- SMC Elite 16 WD8013
- SMC Elite Ultra
- SMC WD8003E/WD8003EBT/WD8003S/WD8003SBT/WD8003W/WD8013EBT/WD8013W and
clones
- SMC EZCard PC Card, 8040-TX, 8041-TX (AX88x90), 8041-TX V.2 (TC5299J)
- Socket LP-E, ES-1000 Ethernet/Serial, LP-E CF, LP-FE CF
- Surecom EtherPerfect EP-427
- Surecom NE-34
- TDK 3000/3400/5670 Fast Ethernet/Modem
- TDK LAK-CD031, Grey Cell GCS2000 Ethernet Card
- TDK DFL5610WS Ethernet/Modem PC Card
- Telecom Device SuperSocket RE450T
- Toshiba LANCT00A PC Card
- VIA VT86C926
- Winbond W89C940
- Winbond W89C940F
ISA, PCI and PC Card devices are supported.
The ed
driver does not support the
following Ethernet NICs:
- Mitsubishi LAN Adapter B8895
- ed%d: failed to clear shared memory at %x - check configuration.
- When the card was probed at system boot time, the
ed
driver found that it could not clear the card's
shared memory. This is most commonly caused by a BIOS extension ROM being
configured in the same address space as the Ethernet card's shared memory.
Either find the offending card and change its BIOS ROM to be at an address
that does not conflict, or change the settings in
device.hints(5) that the card's shared memory is mapped
at a non-conflicting address.
- ed%d: Invalid irq configuration (%d) must be 2-5 for 3c503.
- The IRQ number that was specified in the device.hints(5)
file is not valid for the 3Com 3c503 card. The 3c503 can only be assigned
to IRQs 2 through 5.
- ed%d: Cannot find start of RAM.
- ed%d: Cannot find any RAM, start : %d, x = %d.
- The probe of a Gateway card was unsuccessful in configuring the card's
packet memory. This likely indicates that the card was improperly
recognized as a Gateway or that the card is defective.
- ed: packets buffered, but transmitter idle.
- Indicates a logic problem in the driver. Should never happen.
- ed%d: device timeout
- Indicates that an expected transmitter interrupt did not occur. Usually
caused by an interrupt conflict with another card on the ISA bus. This
condition could also be caused if the kernel is configured for a different
IRQ channel than the one the card is actually using. If that is the case,
you will have to either reconfigure the card using a DOS utility or set
the jumpers on the card appropriately.
- ed%d: NIC memory corrupt - invalid packet length %d.
- Indicates that a packet was received with a packet length that was either
larger than the maximum size or smaller than the minimum size allowed by
the IEEE 802.3 standard. Usually caused by a conflict with another card on
the ISA bus, but in some cases may also indicate faulty cabling.
- ed%d: remote transmit DMA failed to complete.
- This indicates that a programmed I/O transfer to an NE1000 or NE2000 style
card has failed to properly complete. Usually caused by the ISA bus speed
being set too fast.
- ed%d: Invalid irq configuration (%ld) must be %s for %s
- Indicates the device has a different IRQ than supported or expected.
- ed%d: Cannot locate my ports!
- The device is using a different I/O port than the driver knows about.
- ed%d: Cannot extract MAC address
- Attempts to get the MAC address failed.
- ed%d: Missing mii!
- Probing for an MII bus has failed. This indicates a coding error in the PC
Card attachment, because a PHY is required for the chips that generate
this error message.
The ed
device driver first appeared in
FreeBSD 1.0.
The ed
device driver and this manual page
were written by David Greenman.
Early revision DS8390 chips have problems. They lock up whenever
the receive ring-buffer overflows. They occasionally switch the byte order
of the length field in the packet ring header (several different causes of
this related to an off-by-one byte alignment) - resulting in
"NIC memory corrupt - invalid packet
length
" messages. The card is reset whenever these problems
occur, but otherwise there is no problem with recovering from these
conditions.
The NIC memory access to 3Com and Novell cards is much slower than
it is on WD/SMC cards; it is less than 1MB/second on 8bit boards and less
than 2MB/second on the 16bit cards. This can lead to ring-buffer overruns
resulting in dropped packets during heavy network traffic.
The Mitsubishi B8895 PC Card uses a DP83902, but its ASIC part is
undocumented. Neither the NE2000 nor the WD83x0 drivers work with this
card.
The ed
driver is a bit too aggressive
about resetting the card whenever any bad packets are received. As a result,
it may throw out some good packets which have been received but not yet
transferred from the card to main memory.
The ed
driver is slow by today's
standards.
PC Card attachment supports the D-Link DMF650TX LAN/Modem card's
Ethernet port only at this time.
Some devices supported by ed
do not
generate the link state change events used by devd(8) to
start dhclient(8). If you have problems with
dhclient(8) not starting and the device is always attached
to the network it may be possible to work around this by changing
“DHCP
” to
“SYNCDHCP
” in the
ifconfig_ed0 entry in
/etc/rc.conf.