linux kernel not seeing pci device

If you use a standard distribution the card's parameters should be available in the /proc file system. With SUSE even visible with Yast.

-Michael

But lspci is already reading /proc/bus/pci/devices for him. If it's not showing up there, he probably doesn't have the hardware working.

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I suppose in a PC, all these don't do hardware access themselves but just gather informations from the PCI-Bios that probes the hardware when starting the PC. I don't know how hot-plugging PCI works.

Maybe the PCI-Bios can/needs to be configured for PCI accesses and/or somehow shows what it finds.

-Michael

hi everyone, i know the hardware is working because uboot can read the card's vendor id/and device id. forgot to mention that i am on MIPS platform.

lastweek i downloaded scanpci utility to scan pci and the card didn't show up. i am wondering at this point --may be uboot takes all pci devices out of reset but linux doesn't.

i will probably have to look into the uboot and kernel code and compare...

Michael Schnell wrote:

Is it safe to assume that lspci works? You do see devices listed with lspci. I have seen lspci fail to work because of kernel config changes. Just for grins, you might want to check sysfs.

grep /sys/bus/pci/devices/*/vendor

Also look at /var/log/dmesg and see if your device is mentioned there.

Good luck. John

Which linux kernel?

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Have you looked at the uboot source to see what it is doing?

That shouldn't matter.

Check the source.

Yep.

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