Edd pointed me to Broadcom 54g Drivers for Linux released by Linuxant via a press release posted to LWN.
It’s not the One True solution, as Edd put it, but it’s a start. Ideally I’d like to use drivers that were GPL’d/LGPL’d and incorporated into Wlan-ng or the kernel source. The licensing of these drivers also concerns me a bit:
* Linuxant is happy to provide free trial DriverLoader licenses, while discussions are under way with hardware vendors to finance development costs. Linuxant hopes that DriverLoader will remain free for end-users.
This is definately a great product, and very useful, as there are bajillions of Broadcom chipsets out there in the wild. I’ll definately be keeping an eye on this and other 802.11g Linux projects.