This wiki is currently read-only due to migration to https://wireless.wiki.kernel.org/ (which is also read-only right now)

iwl3945

Intel maintains the iwl3945 driver. Their Linux driver project site is:

http://www.intellinuxwireless.org/

firmware

You can get the firmware for iwl3945 from:

http://www.intellinuxwireless.org/?p=iwlwifi&n=downloads

kerneldoc

There is plenty of documentation for the iwl3945: