lmc - Lan Media Corporation SSI/DS1/HSSI/DS3 card device
lmc* at pci? dev ? function ?
The lmc driver provides support for the Lan Media Corporation SSI, DS1,
HSSI, and DS3 PCI WAN adapters based on the DEC 21140 Ethernet chip. The
adapters use a DEC 21140 Ethernet chip for the PCI bus interface. Leaving
the bus interface chip, the data path goes through a
gate array, where HDLC processing is accomplished.
FPGA, there are FIFO buffers and the DS1, DS3, and V.35
The intent is to provide a synchronous serial link with HDLC
speeds of up to 10Mbps (for the SSI card), 52Mbps (for the
BNC connectors for 45Mbps operation without a CSU/DSU (DS3
card), and an
RJ45 jack for T1/E1 operation without a CSU/DSU (DS1 card).
The card will automatically use HDLC framing and defaults to
clock source. For the DS1 and DS3 cards with built-in
the clock source is always external (from CSU/DSU).
to set cable length is not currently implemented.
Using the sppp(4) driver, you can also use the ppp protocol.
case, the lmc interface should be configured as a point-topoint link.
lmc%d: couldn't map interrupt A fatal initialization error
lmc%d: couldn't establish interrupt A fatal initialization
error has occurred.
lmc%d: enabling keepalive Cisco HDLC keepalive packets will
lmc%d: disabling keepalive Cisco HDLC keepalive packets
will not be
lmc%d: clock internal The card is using internal clocking
for the line.
lmc%d: clock external The card is using external clocking
for the line.
lmc%d: asserting DTR and RTS The card is sending DTR and
RTS signals on
lmc%d: deasserting DTR and RTS The card is not sending DTR
and RTS signals
on the line.
lmc%d: Abnormal interrupt The card received an incomplete
may be a sign of a hardware fault.
lmc%d: tx_intr: failed to dequeue mbuf?!? Only available if
lmc%d: txput: tx not running Problem from tulip. Only
available if compiled
netintro(4), sppp(4), ifconfig(8), lmccontrol(8)
Lan Media Corporation has a web site with data, descriptions, and pictures
of their cards at www.lanmedia.com.
The lmc device driver was written by Michael Graff, and was
part from Matt Thomas' de(4) driver. The OpenBSD port and
are from Chris Cappuccio. Later enhancements to support the
are based on LMC's Linux driver.
OpenBSD 3.6 October 15, 1999
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