mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-27 13:05:03 +08:00
47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
|
The 3Com Etherlink Plus (3c505) driver.
|
||
|
|
|
||
|
|
This driver now uses DMA. There is currently no support for PIO operation.
|
||
|
|
The default DMA channel is 6; this is _not_ autoprobed, so you must
|
||
|
|
make sure you configure it correctly. If loading the driver as a
|
||
|
|
module, you can do this with "modprobe 3c505 dma=n". If the driver is
|
||
|
|
linked statically into the kernel, you must either use an "ether="
|
||
|
|
statement on the command line, or change the definition of ELP_DMA in 3c505.h.
|
||
|
|
|
||
|
|
The driver will warn you if it has to fall back on the compiled in
|
||
|
|
default DMA channel.
|
||
|
|
|
||
|
|
If no base address is given at boot time, the driver will autoprobe
|
||
|
|
ports 0x300, 0x280 and 0x310 (in that order). If no IRQ is given, the driver
|
||
|
|
will try to probe for it.
|
||
|
|
|
||
|
|
The driver can be used as a loadable module. See net-modules.txt for details
|
||
|
|
of the parameters it can take.
|
||
|
|
|
||
|
|
Theoretically, one instance of the driver can now run multiple cards,
|
||
|
|
in the standard way (when loading a module, say "modprobe 3c505
|
||
|
|
io=0x300,0x340 irq=10,11 dma=6,7" or whatever). I have not tested
|
||
|
|
this, though.
|
||
|
|
|
||
|
|
The driver may now support revision 2 hardware; the dependency on
|
||
|
|
being able to read the host control register has been removed. This
|
||
|
|
is also untested, since I don't have a suitable card.
|
||
|
|
|
||
|
|
Known problems:
|
||
|
|
I still see "DMA upload timed out" messages from time to time. These
|
||
|
|
seem to be fairly non-fatal though.
|
||
|
|
The card is old and slow.
|
||
|
|
|
||
|
|
To do:
|
||
|
|
Improve probe/setup code
|
||
|
|
Test multicast and promiscuous operation
|
||
|
|
|
||
|
|
Authors:
|
||
|
|
The driver is mainly written by Craig Southeren, email
|
||
|
|
<craigs@ineluki.apana.org.au>.
|
||
|
|
Parts of the driver (adapting the driver to 1.1.4+ kernels,
|
||
|
|
IRQ/address detection, some changes) and this README by
|
||
|
|
Juha Laiho <jlaiho@ichaos.nullnet.fi>.
|
||
|
|
DMA mode, more fixes, etc, by Philip Blundell <pjb27@cam.ac.uk>
|
||
|
|
Multicard support, Software configurable DMA, etc., by
|
||
|
|
Christopher Collins <ccollins@pcug.org.au>
|