Re: FW: PROBLEM: Devices behind PCI Express-to-PCI bridge not mapped

Peter Buckingham
2005-06-21T18:41:12Z

Hi Brian,

Hodle, Brian wrote:
> I am experiencing exactly the same problem. I am using an ASUS
> K8N-DL MB with the x86_64 kernel. My PCIX devices are not allocated
> correctly. I tried using the 'pci=routeirq' option to no avail. Disabling
> ACPI in the BIOS does not help the situation either. X will not use my PCIX
> for GLX since none of the extra txture memory has been allocated! Anyone
> have any ideas?

well my system is using PCIe instead so it's a little different. It
seems that the PCIe fixups are enough to get the BAR regions assigned
correctly. prior to loading the nvidia driver the BARs are listed as
disabled in lspci -vvx, but after loading the BARs are not disabled and
I am able run X on both GPUs fine. I haven't tried running any OpenGL
type tests yet on the system.

pci=routeirq is a red herring, this is about the interrupts and
shouldn't affect the bar allocation.

it might be useful for you to post a dmesg with PCI_DEBUG enabled and
specify which kernel version you are using. My system only worked with
the most recent 2.6.12 (but i think that's due to some of the pci
express changes and some of the bridge handling since our system is a
little unique...)

peter