What is being setup in chrp_setup_pci_ptrs()?

[Andrew_Klosterman at 3com.com]

Dear PCI Gurus,

     In the function chrp_setup_pci_ptrs() at the end of the file
/arch/ppc/kernel/chrp_pci.c there are three different variables that are
initialized depending on the system being used:
     pci_dram_offset,
     isa_mem_base and
     isa_io_base.

     Could someone please explain to me what the addresses these variables refer
to mean, please?

Many thanks,

--Andy



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