I did some looking around and found this:
If you go to this URL, on Toshiba's support site, it looks like there are two windoze drivers listed, one is for Antheros chip set. If that is what you have, it is hard to tell, since the wireless lan is integrated on the system board, and not on the PCI bus. That is also why it doesn't show up with command 'lspci'. If it is Antheros chip set there are native linux KLM's that will support it. KLM = kernel loadable modules. ( something like a driver, (but a little different).
I think the Mad-wifi KLM support Antheros chips. Since you have a loaded system, do a 'lsmod' to see if your distro detected the hardware and loaded the modules. If yes, then you need to start configuring. If not, then modprobe the module, configure and activate it.
The other way to get it working is to install ndiswrapper from your distro. Then load the windoze drivers. Configure and activate it. There are how-to's if you decide to try ndiswrapper, on this board under networking.
Hope this helps.