Re: [Madwifi-devel] Help creating a virtual Qemu device

[Clemens K. <cle...@gm...>]

hi everyone!
i've read some more code and now found the sources where the DMA and 
everything is set up and also where (i think) the actual data is sent to 
the driver

the one thing that is left for my understanding (and please answer at 
least these two short questions) is:
1.) how is the hardware informed of this new packet??

when i write a (e.g. probe request) packet into the tx buffer, is there 
a WRITE to a well-known device-memory-address that the device reacts to 
or does the driver set some bit to indicate a new packet and the 
hardware repeatedly checks this bit, or does it work some other way??


2.) where does the DMA for the tx/rx/etc. map to (into the device memory)?

could anyone just briefly answer these 2 questions please? :-)
thanks!