Hi list, I'm currently reading the LDD 3rd Edition and trying to create a device driver for a custom device located on VME bus. I have already linux 2.6.15running on the master board, as well as the device driver for the PCI-VME bridge. The main problem I have is understanding how to "attach" my driver for the custom device to the bridge device driver. The bridge device driver is implemented as a class, i.e. doesn't define a new bus type. Should I define a new class for my driver, or should I connect it somehow to the existing one (maybe by something as "subclass")? All I want to do is to redirect I/O reads and writes to the VME bus, but I got no clue as to how to use the existing VME bridge driver for this purpose. After I get through this I think all other things (VME interrupt registration & handling, etc.) will be straightforward. The LDD 3rd book states that defining a new bus type is the last thing one would like to do, instead defining a class is far better approach. Why is that?
Any recommendations and sharing of practical experience are highly appreciated. Best Regards, Konstantin
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