Messages in this thread |  | | Date | Thu, 24 Oct 2002 20:14:09 -0400 | | From | Jeff Garzik <> | | Subject | Re: PCI device order problem |
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H. J. Lu wrote:
>On Thu, Oct 24, 2002 at 07:49:41PM -0400, Jeff Garzik wrote: > > >>H. J. Lu wrote: >> >> >> >>>In arch/i386/kernel/pci-pc.c, there are >>> >>>/* >>>* Sort the device list according to PCI BIOS. Nasty hack, but since some >>>* fool forgot to define the `correct' device order in the PCI BIOS specs >>>* and we want to be (possibly bug-to-bug ;-]) compatible with older kernels >>>* which used BIOS ordering, we are bound to do this... >>>*/ >>> >>>static void __devinit pcibios_sort(void) >>> >>>The problem is on my MB: >>> >>>00:00.0 Host bridge: Intel Corp. e7500 [Plumas] DRAM Controller (rev 03) >>>00:00.1 Class ff00: Intel Corp. e7500 [Plumas] DRAM Controller Error Reporting ( rev 03) >>>00:03.0 PCI bridge: Intel Corp. e7500 [Plumas] HI_C Virtual PCI Bridge (F0) (rev 03) >>>00:03.1 Class ff00: Intel Corp. e7500 [Plumas] HI_C Virtual PCI Bridge (F1) (rev 03) >>>00:1d.0 USB Controller: Intel Corp. 82801CA/CAM USB (Hub (rev 02) >>>00:1d.1 USB Controller: Intel Corp. 82801CA/CAM USB (Hub (rev 02) >>>00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 42) >>>00:1f.0 ISA bridge: Intel Corp. 82801CA ISA Bridge (LPC) (rev 02) >>>00:1f.1 IDE interface: Intel Corp. 82801CA IDE U100 (rev 02) >>>00:1f.3 SMBus: Intel Corp. 82801CA/CAM SMBus (rev 02) >>>01:0c.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) >>>02:1c.0 PIC: Intel Corp. 82870P2 P64H2 I/OxAPIC (rev 03) >>>02:1d.0 PCI bridge: Intel Corp. 82870P2 P64H2 Hub PCI Bridge (rev 03) >>>02:1e.0 PIC: Intel Corp. 82870P2 P64H2 I/OxAPIC (rev 03) >>>02:1f.0 PCI bridge: Intel Corp. 82870P2 P64H2 Hub PCI Bridge (rev 03) >>>03:07.0 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (rev 01) >>>03:07.1 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (rev 01) >>>03:08.0 RAID bus controller: 3ware Inc 3ware 7000-series ATA-RAID (rev 01) >>> >>>Eth1 becomes: >>>03:07.0 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (rev 01) >>> >>>and eth0 becomes: >>>03:07.1 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (rev 01) >>> >>>Is that a good idea to have an option to sort the PCI device by PCI bus and >>>slot numbers? >>> >>> >>> >>> >>Without answering your specific question, but addressing $subject, what >>problem is caused by the PCI device order you see? >> >> > >It is different from the hardware documentation. The hardware manual says >it has 2 NICs, NIC 1 (03:07.0) and NIC2 (03:07.1), which makes senses >to me. NIC 1 is a special one which supports IPMI over LAN. Since we >only use one NIC now, we'd like to use NIC 1 and call it eth0. > >
Well, overall, depending on ordering is error-prone (as you see). I would suggest migrating to a less-fragile scheme. nameif and ethtool together should get you exactly the device you need... (though I wonder why simply using eth1 is so awful, if this situation is constant...)
Jeff
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