On Friday, September 10, 2010 06:16:00 am Brian C. Huffman wrote: > > **Bjorn Helgaas<bjorn.helgaas@xxxxxx> <http://marc.info/?a=105422952700001&r=1&w=2>** wrote: > > On Tuesday, August 31, 2010 03:21:05 pm Brian C. Huffman wrote: > > > I have an Intel DP43BF motherboard with 4 PCI slots, 2 PCIe x1 and 1 PCIe x16 \ > > > slots. With 2.6.36-rc2-git5 (as well as stable 2.6.34 and .35), the kernel doesn't \ > > > see my conventional PCI devices. They can be seen with dmidecode but do not show \ > > > up with lspci. I've tried pci=noacpi, pci=use_crs and while it takes the options, \ > > > it doesn't change the visibility of the devices. > > > These same devices (a PVR250,Maudio Delta DiO, and Fusion HD DVB card) previously \ > > > worked with another motherboard. > > > Here's the lspci: > > > 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) > > > ...and dmidecode: > > > [snip] > > > Handle 0x0036, DMI type 9, 17 bytes > > > System Slot Information > > > Designation: PCI Slot > > > Type: 32-bit PCI > > > Current Usage: In Use > > > Length: Short > > > ID: 3 > > > Characteristics: > > > 3.3 V is provided > > > Opening is shared > > > PME signal is supported > > > Bus Address: 0000:00:1e.0 > > > Is there anything else I should include to help troubleshoot? > > > > It looks like your PCI devices should be on the bus behind the > > bridge at 1e.0. Can you collect a dmesg log? That will have > > information about the PCI probe process. > > > > Are the PCI cards electrically compatible with the slots? Are > > there any BIOS options related to the conventional PCI bridge > > or enabling/disabling those slots? They're not hot-plug slots > > with open latches? Have you ever seen any card work in those > > slots, with any kernel? > > As far as I know, the PCI cards are electrically compatible. The board documentation says only > "Conventional PCI Slots." I think it also mentions PCI 2.3 compliant. There do not appear to > be any BIOS options that relate to the bridge. This is a new board, so I have not seen any > other cards work with any other kernel. I have tried about 4 different kernels though - some > fedora and some vanilla. > > FYI - I just loaded Windows XP SP2 and have verified that it can see the cards and that they all > work as expected, so I would assume that answers the "electrically compatible" question above. Yes, I would assume the same. On your Windows install, can you use a tool like Everest (free trial from http://www.lavalys.com/) to see where the devices in question live? My guess is they're behind this bridge: > pci 0000:00:1e.0: PCI bridge to [bus 20-08] (subtractive decode) There's something wrong here because the [20-08] bus number range is backwards. Maybe the secondary bus is really 08, but we scan bus 20 instead? The "pci=assign-busses" parameter might work around this for now. Maybe Windows is smart enough to notice this problem and reprogram the bridge to something sensible automatically. 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
