freebsd-nq/share/man/man4/man4.i386/ep.4

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.Dd June 30, 2005
.Dt EP 4 i386
.Os
.Sh NAME
.Nm ep
.Nd Ethernet driver for 3Com Etherlink III (3c5x9) interfaces
.Sh SYNOPSIS
.Cd "device ep"
.Sh DESCRIPTION
The
.Nm
device driver supports network adapters based on the 3Com 3C5x9 Etherlink III
Parallel Tasking chipset.
.Pp
Various models of these cards come with a different assortment of
connectors:
.Pp
.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
.It AUI/DIX
Standard 15 pin connector, also known as 10base5 (thick-net)
.It 10Base2
BNC, also known as thin-net
.It 10BaseT
UTP, also known as twisted pair
.El
.Pp
The default port to use is the port that has been selected with the
setup utility.
To override this, use the following media options with
.Xr ifconfig 8
or in your
.Pa /etc/rc.conf
file.
.Pp
.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
.It 10base5/AUI
Use the AUI port.
.It 10base2/BNC
Use the BNC port.
.It 10baseT/UTP
Use the UTP port.
.El
.Pp
If there are multiple cards in the computer, they are searched for
in the following order: bus, slot, then Ethernet address.
.Sh HARDWARE
The
.Nm
driver supports Ethernet adapters based on the
3Com 3C5x9 Etherlink III Parallel Tasking chipset, including:
.Pp
.Bl -bullet -compact
.It
3Com 3C1 CF
.It
3Com 3C509-TP, 3C509-BNC, 3C509-Combo, 3C509-TPO, 3C509-TPC ISA
.It
3Com 3C509B-TP, 3C509B-BNC, 3C509B-Combo, 3C509B-TPO, 3C509B-TPC ISA
.It
3Com 3C529, 3C529-TP MCA
.It
3Com 3C562/3C563 PCMCIA
.It
3Com 3C569B-J-TPO, 3C569B-J-COMBO CBUS
.It
3Com 3C574, 3C574TX, 3C574-TX, 3CCFE574BT, 3CXFE574BT, 3C3FE574BT PCMCIA
.It
3Com 3C579-TP, 3C579-BNC EISA
.It
3Com 3C589, 3C589B, 3C589C, 3C589D, 3CXE589DT PCMCIA
.It
3Com 3CCFEM556B, 3CCFEM556BI PCMCIA
.It
3Com 3CXE589EC, 3CCE589EC, 3CXE589ET, 3CCE589ET PCMCIA
.It
3Com Megahertz 3CCEM556, 3CXEM556, 3CCEM556B, 3CXEM556B, 3C3FEM556C PCMCIA
.It
3Com OfficeConnect 3CXSH572BT, 3CCSH572BT PCMCIA
.El
.Sh NOTES
The 3c509 card has no jumpers to set the address.
3Com supplies software to set the address of the card in software.
To find the card on the ISA bus, the kernel performs a complex
scan operation at IO address 0x110.
Beware!
Avoid placing other cards at that address!
.Pp
Furthermore,
the 3c509 should only
be configured in EISA mode
when installed in a computer that has actual EISA slots
(and an EISA-aware BIOS).
The normal driver auto-detection support
is sufficient for non-EISA systems.
.Pp
Many different companies sold the 3Com PC Cards under their own private
label.
These cards also work.
.Sh DIAGNOSTICS
.Bl -diag
.It ep0: reset (status: %x)
The driver has encountered a FIFO underrun or overrun.
The driver will reset the card and the packet will be lost.
This is not fatal.
.It ep0: eeprom failed to come ready
The eeprom failed to come ready.
This probably means the card is wedged.
.It ep0: 3c509 in test mode. Erase pencil mark!
This means that someone has scribbled with pencil
in the test area on the card.
Erase the pencil mark and reboot.
(This is not a joke).
.It ep0: No I/O space?!
The driver was unable to allocate the I/O space that it thinks
should be there.
Look for conflicts with other devices.
.It ep0: No irq?!
The driver couldn't allocate the interrupt it wanted.
Look for conflicts, although sharing interrupts for PC Card is normal.
.It ep0: No connectors!
The driver querried the hardware for what ethernet attachment were
present, but the hardware reported none that the driver recognized.
.It ep0: Unable to get Ethernet address!
The driver was unabel to read the ethernet address from the EEPROM.
This is likely the result of the card being wedged.
.It ep0: if_alloc() failed
The driver was unable to allocate a ifnet structure.
This may happen in extremely low memory conditions.
.It ep0: strange connector type in EEPROM: assuming AUI
The driver does not know what to do with the information the EEPROM
has about connectors, so it is assuming the worst.
.It ep0: unknown ID 0xXXXXXXXX
The driver has found an ID that it believes it supports, but doesn't
have a specific identification string to present to the user.
.It ep0: <%s> at port 0x%03x in EISA mode
The 3C509 ISA card is in EISA mode.
This message appears to be purely informational. 
.It ep0: <%s> at x0%03x in PnP mode
This card appears to be in Plug and Play mode.
It should be probed as part of the plug and play phase of the ISA
probes.
.It ep0: Invalid EEPROM checksum!
The EEPROM has a bad checksum, so the driver is ignoring the card.
.It ep0: bus_setup_intr() failed!
The driver was unable to setup the interrupt handler.
This should never happen.
.El
.Sh SEE ALSO
.Xr ed 4 ,
.Xr el 4 ,
.Xr ie 4 ,
.Xr intro 4 ,
.Xr ng_ether 4 ,
.Xr vx 4 ,
.Xr ifconfig 8
.Sh STANDARDS
are great.
There is so many to choose from.
.Sh BUGS
Support for the 3Com 3C1 is not working.