Pcnet_cs
is a driver for all NS8390-based PCMCIA ethernet cards. It can use
either polled IO or a shared memory window to exchange data with the
card. The driver first tests for a shared memory buffer, falling
back on polled IO if the memory test fails. It replaces the
de650_cs
and
ibmcc_cs
drivers in previous releases. When this driver is bound to a card, it
allocates the next available ethernet device
(eth0..eth#).
This
device name will be reported in the kernel log file, and passed on to
cardmgr(8).
PARAMETERS
pc_debug=n
Selects the PCMCIA debugging level. This parameter is only available
if the module is compiled with debugging enabled. A non-zero value
enables debugging.
irq_list=i,j,...
Specifies the set of interrupts that may be allocated by this driver.
if_port=n
Selects the transceiver type, for Socket EA and IBM CCAE cards. 1 is
10baseT (twisted pair), and 2 is 10base2 (BNC, or thin net). The
default is 1 (10baseT).
use_big_buf=n
For Socket EA cards, a flag indicating if the driver should use the
large (64K) packet buffer. The default is 1 (true).
use_shmem=n
Selects shared memory versus polled IO mode for packet transfers. The
default is -1, meaning to use the card's CIS information to decide.
mem_speed=n
Sets the access speed of the shared memory window, in nanoseconds.
The default is 0 (i.e., no extra wait states). Values of up to 1000
are legal.
delay_output=n
Specifies that a delay should be inserted after a polled IO block
output. This is turned on by default for Accton and Socket EA cards.
delay_time=n
Specifies the length of the
delay_output
delay, in microseconds. The default is 4.
hw_addr=n,n,n,n,n,n
For cards whose hardware ethernet addresses can't be identified by the
current driver, this is a hack for hardwiring a specific address. The
argument should consist of exactly six byte-sized numbers, separated
by commas, with no spaces. Numbers may be in decimal or hex ('0xNN').
DIAGNOSTICS
eth#: interrupt(s) dropped!
Indicates that the driver did not receive an interrupt notification
for some reason. The driver will poll the card (with a significant
performance penalty) if the problem persists. The most likely cause
is an interrupt conflict and/or host bridge configuration problem.
