| 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. |
| |
| 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> |
