Some devices, such as ppc, go through a series of very different addresses when probing for different chipsets. In drivers where the io port does not change, the standard newbus policy appears to be to assign a bus handle and tag to this port, and access it with standard newbus calls.

What about ppc, where probing involves read/writes to one io port, then select another, then another, etc? Should these continue to use inb/outb, or should each one go through the overhead of assigning bus handles and tags to each possible port value during the probe?

jcm

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