cvs commit: src/sys/amd64/include pci_cfgreg.h src/sys/amd64/pci
pci_cfgreg.c src/sys/i386/pci pci_cfgreg.c
jhb at FreeBSD.org
Wed Nov 28 14:20:09 PST 2007
jhb 2007-11-28 22:20:08 UTC
FreeBSD src repository
Adjust the code to probe for the PCI config mechanism to use.
- On amd64, just assume type #1 is always used. PCI 2.0 mandated
deprecated type #2 and required type #1 for all future bridges which
was well before amd64 existed.
- For i386, ignore whatever value was in 0xcf8 before testing for type #1
and instead rely on the other tests to determine if type #1 works. Some
newer machines leave garbage in 0xcf8 during boot and as a result the
kernel doesn't find PCI at all (which greatly confuses ACPI which expects
PCI to exist when PCI busses are in the namespace).
MFC after: 3 days
Discussed with: scottl
Revision Changes Path
1.14 +0 -5 src/sys/amd64/include/pci_cfgreg.h
1.110 +11 -167 src/sys/amd64/pci/pci_cfgreg.c
1.125 +25 -25 src/sys/i386/pci/pci_cfgreg.c
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