Various PMac PCI patches

[Ryan Nielsen]

Michel Lanners wrote:
> > isa_io_base is set to the address of bus 0 !
> > so inl() and friends use wrong address for cards on bus 1.
> 
> That's expected (and broken) behaviour right now; I know how to correct
> the problem, but I need to do some hacking to get it coded right.

What are you plannering ?

I got tulip working by #define _IO_BASE DRIVER_IO_BASE (ifdef) in asm/io.h
and define DRIVER_IO_BASE to a value from pci_io_base(bus) in tulip.c

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