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cs — Ethernet device driver
To compile this driver into the kernel, place the following line in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
The cs driver provides support for ISA Ethernet adapters based on the
Crystal Semiconductor CS8900 and CS8920 NICs. These devices are used on
the IBM EtherJet ISA adapters and in many embedded applications where the
high integration, small size and low cost of the CS89x0 family compensate
for their drawbacks.
The cs driver will obtain configuration parameters either from
/boot/device.hints or from the card. At least the I/O port number must
be specified. Other parameters specified in /boot/device.hints will be
used if present; the card may be soft-configured so these may be any
valid value. Adapters based on the CS8920 normally offer PnP
configuration and the driver will detect the IBM EtherJet and the CSC6040
Note that the CS8900 is limited to 4 IRQ values; these are normally
implemented as 5, 10, 11 and 12. The CS8920 has no such limitation.
Memory-mapped and DMA operation are not supported at this time.
In addition to the ISA devices, the PC Card devices based on the CS889x0
family are also supported. The IBM EtherJet PCMCIA Card is the only
known device based on this chip. The PC Card support does not need the
above specific ISA hints to work. The PC Card support may not work for
10base2 (thinnet) connections and may bogusly claim to support 10base5
(there are no known cards that have an AUI necessary for 10base5 support
on their dongles).
cs%d: full/half duplex negotiation timeout The attempt to negotiate
duplex settings with the hub timed out. This may indicate a cabling
problem or a faulty or incompatible hub.
cs%d: failed to enable <media> The CS89x0 failed to select the nominated
media, either because it is not present or not operating correctly.
cs%d: No EEPROM, assuming defaults The CS89x0 does not have an EEPROM,
or the EEPROM is hopelessly damaged. Operation will only be successful
if the configuration entry lists suitable values for the adapter.
cs%d: Invalid irq The IRQ specified in the configuration entry is not
valid for the adapter.
cs%d: Could not allocate memory for NIC There is a critical memory
shortage. The adapter will not function.
cs%d: Adapter has no media The adapter is not configured for a specific
media type. The media type will have to be manually set.
This is a %s, but LDN %d is disabled The PnP probe code found a
recognised adapter, but the adapter is disabled.
failed to read pnp parms A PnP adapter was found, but configuration
parameters for it could not be read.
failed to pnp card parameters The parameters obtained via PnP were not
accepted by the driver. The adapter may not function.
The CS89x0 family of adapters have a very small RAM buffer (4K). This
may cause problems with extremely high network loads or bursty network
traffic. In particular, NFS operations should be limited to 1k
read/write transactions in order to avoid overruns.
arp(4), netintro(4), ng_ether(4), ifconfig(8)
The cs device driver was written by Maxim Bolotin and Oleg Sharoiko.
This manpage was written by Michael Smith.