On Sat, 30 Aug 2008, Yinghai Lu wrote: > > do you agree to use quirk to make the BAR res to have correct end > between pci_probe and pci_resource_survey? In general I would agree, but now that I've looked at it a bit more, I actually don't think it's a bug in the chipset any more. See my previous email that crossed with yours. I suspect that that northbridge resource is basically acting as a bridge resource. So 0xe0000000 - 0xffffffff is actually _correct_. And MCFG being in that window (and being first in it) is just a detail. Look at the resource allocations on Rafael's machine: there are two different classes: - outside that BAR3 window: The "external gfx0 port A" decode (bridged by device 0000:02.0): d8000000-dfffffff : PCI Bus 0000:01 d8000000-dfffffff : 0000:01:00.0 d8000000-d8ffffff : vesafb and suspect the graphics port is special (considering that this is an ATI chipset) - inside that BAR3 window: everything else (PCI express): e0000000-efffffff : PCI MMCONFIG 0 fe6f4000-fe6f7fff : 0000:00:14.2 fe6f4000-fe6f7fff : ICH HD audio fe6fa000-fe6fafff : 0000:00:13.4 fe6fa000-fe6fafff : ohci_hcd fe6fb000-fe6fbfff : 0000:00:13.3 fe6fb000-fe6fbfff : ohci_hcd fe6fc000-fe6fcfff : 0000:00:13.2 fe6fc000-fe6fcfff : ohci_hcd fe6fd000-fe6fdfff : 0000:00:13.1 fe6fd000-fe6fdfff : ohci_hcd fe6fe000-fe6fefff : 0000:00:13.0 fe6fe000-fe6fefff : ohci_hcd fe6ff000-fe6ff0ff : 0000:00:13.5 fe6ff000-fe6ff0ff : ehci_hcd fe6ff800-fe6ffbff : 0000:00:12.0 fe6ff800-fe6ffbff : ahci fe700000-fe7fffff : PCI Bus 0000:01 fe7c0000-fe7dffff : 0000:01:00.0 fe7e0000-fe7effff : 0000:01:00.1 fe7f0000-fe7fffff : 0000:01:00.0 fe800000-fe8fffff : PCI Bus 0000:02 fe8ffc00-fe8fffff : 0000:02:00.0 fe8ffc00-fe8fffff : ahci fe900000-fe9fffff : PCI Bus 0000:03 fe9c0000-fe9dffff : 0000:03:00.0 fe9fc000-fe9fffff : 0000:03:00.0 fe9fc000-fe9fffff : sky2 fea00000-feafffff : PCI Bus 0000:04 feaffc00-feafffff : 0000:04:00.0 feaffc00-feafffff : ahci feb00000-febfffff : PCI Bus 0000:05 febff000-febfffff : 0000:05:08.0 febff000-febff7ff : ohci1394 fec00000-fec00fff : IOAPIC 0 fed00000-fed003ff : HPET 2 fee00000-fee00fff : Local APIC fff00000-ffffffff : reserved Hmm? (yeah, some of those resources are _really_ special, and are inside the CPU itself, eg the APIC and possibly HPET, and never necessarily even make it to the host bridge at all because they get decoded early). Linus -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
