Messages in this thread | | | Date | Fri, 28 Jan 2005 13:12:00 -0700 | From | Grant Grundler <> | Subject | Re: Fwd: Patch to control VGA bus routing and active VGA device. |
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On Fri, Jan 28, 2005 at 11:41:16AM -0800, Jesse Barnes wrote: > Yeah, I think I understand. We could probably do the same thing on sn2 > as you do on parisc--add a 'segment 0' offset to the port so that it's routed > correctly. I think that's a little less flexible than adding a new resource > though, since it makes it harder for drivers to support more than one device > or devices on non-segment 0 busses.
To be clear, the parisc code defines this in include/asm-parisc/pci.h:
#define HBA_PORT_SPACE_BITS 16 #define PCI_PORT_HBA(a) ((a) >> HBA_PORT_SPACE_BITS)
and PCI_PORT_HBA gets used in arch/parisc/kernel/pci.c.
Offhand, I don't know if ia64 has the equivalent. But it sounds like it might need it.
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