Quad Pentium Pro dual PCI buses, cat /proc/pci misses one bus

Brynn Rogers (brynn@winternet.com)
Thu, 25 Dec 1997 22:49:25 -0600 (CST)

I have a Quad PPro (I think the motherboard is a ALR/DataGeneral product)
that doesn't show devices on the second pci bus in /proc/pci.
But they obviously work, because the 2940uw works fine and shows up
in /proc/scsi/aic7xxx/0 and is completly missing from /proc/pci.

The Motherboard has the 450GX chipset (Orion), and I suspect that
one of the devices that /proc/pci does see is really a pci-pci bridge
that isn't recognized.

I am now running 2.1.74 in this box, and I also ran 2.0.30.
/proc/pci gives this:
PCI devices found:
Bus 0, device 26, function 0:
Host bridge: Intel Orion P6 (rev 4).
Medium devsel. Master Capable. Latency=72.
Bus 0, device 25, function 0:
Host bridge: Intel Orion P6 (rev 4).
Medium devsel. Master Capable. Latency=72.
Bus 0, device 20, function 0:
RAM memory: Intel 82450GX Orion P6 (rev 4).
Fast devsel. Fast back-to-back capable.
Bus 0, device 13, function 0:
VGA compatible controller: ATI 210888GX (rev 3).
Medium devsel. IRQ 40.
Non-prefetchable 32 bit memory at 0xfd000000 [0xfd000000].
Bus 0, device 3, function 0:
IDE controller: OPTi 82C621 (rev 0).
Medium devsel. Fast back-to-back capable.
Bus 0, device 2, function 0:
Non-VGA device: Intel 82375EB (rev 21).
Medium devsel. Master Capable. Latency=248.

Any point in getting /proc/pci to work right?

P.S. The CPU's are PPRO 166/512K, and for giggles I tried 200 and 233 MHZ
out, both of which worked perfectly. I run it at 166 because I don't
want ANY problems.

P.P.S. any possibility of mounting the DGUX filesystem? (DataGeneral)

Brynn Rogers
http://www.winternet.com/~brynn to see my triplets!