Not getting interrupts from PCI express slot

John Baldwin jhb at
Wed Aug 4 20:23:23 UTC 2010

On Wednesday, August 04, 2010 1:18:53 pm Hans Petter Selasky wrote:
> Hi,
> I'm not getting any interrupts from a PCI express slot. When I insert a 
> device, no attach event is generated. If the device is present during boot 
> device is fully detected, but still no IRQ's. Is there anything I can do or 
> test?
> I'm running 8-stable on amd64.

In general FreeBSD doesn't support hotplug PCI currently.  Likely you'd need
some sort of hotplug bridge driver similar to cbb(4) for Cardbus slots that 
would catch whatever interrupt is generated when a card is inserted and add 
the device, etc.

John Baldwin

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