On Tuesday, September 14, 2010 05:38:49 am Simon Arlott wrote: > On Tue, September 14, 2010 00:16, Bjorn Helgaas wrote: > > On Thursday, September 09, 2010 06:16:33 am Simon Arlott wrote: > >> With a Gigabyte GA-MA69VM-S2 690V motherboard, it stalls in > >> qurk_usb_early_handoff unless pci=nocrs is used: > > > > Huh. It looks like the HPET appears as a PCI device, in addition to > > being described in the HPET table (and possibly in the ACPI namespace): > > > > [ 0.000000] ACPI: HPET id: 0x10b9a201 base: 0xfed00000 > > [ 0.454232] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) > > [ 0.461348] pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] > > [ 0.468004] pci_root PNP0A03:00: host bridge window [io 0x0d00-0xffff] > > [ 0.474004] pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff] > > [ 0.481004] pci_root PNP0A03:00: host bridge window [mem 0x000c0000-0x000dffff] > > [ 0.489004] pci_root PNP0A03:00: host bridge window [mem 0x80000000-0xfebfffff] > > [ 1.034049] pci 0000:00:14.0: no compatible bridge window for [mem 0xfed00000-0xfed003ff] > > [ 1.651998] pci 0000:00:14.0: BAR 1: assigned [mem 0x80000000-0x800003ff] > > > > Since the 00:14.0 BAR looks invalid (it's outside all the host bridge > > windows), we moved it to 0x80000000, and that probably broke the HPET > > driver, which still thinks it's at 0xfed00000. > > > > I've heard about this problem, but I haven't ever looked into it in > > detail. The best way to handle this would be to figure out why Windows > > doesn't have this problem, since it also moves PCI devices in this > > situation. > > You're assuming Windows works on this hardware. Yes, that's true. I found this user manual: http://download.gigabyte.eu/FileList/Manual/motherboard_manual_ga-ma69vm-s2_e.pdf which claims Windows 2000/XP/Vista support, but if you have evidence that Windows does not work, that would be good to know. > > Simon, if you have a way to boot Windows, the output of Everest (free > > trial at http://www.lavalys.com/) would be a great help. > > Windows would take too long to install to try this. > > > I can see from the stalled.txt log that we did call sb600_disable_hpet_bar(), > > and it *looks* like that should have disabled BAR 1. But apparently it > > didn't. Would you mind collecting another log with the patch below? > > Whenever I next need to reboot, I can try the patch, but that won't be soon... OK. Just let me know if/when you have any more information. I opened this bugzilla for this problem: https://bugzilla.kernel.org/show_bug.cgi?id=18482 Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
