Programming PCI-PCI bridge

Brian Topping (
Fri, 5 Apr 1996 12:45:04 -0700

Hi all,

Does anyone know how I can get the kernel to program a PCI-PCI bridge chip
to force all of the PCI devices on the far end of the bridge to share an
interrupt? I have a Znyx 4 port Ether board with a DEC 21050 PCI-PCI
bridge, but I can't find much in the kernel source in this regard.

The problem I am up against is the driver probe routine is called with the
results of the BIOS mapping of the IRQs, with has a different IRQ for each
of the NIC's. In reality though, the IRQ that the NIC's raise is all the
same one.