i'd like to know more about PIRQ and PCI en general, but the documentation in http://www.pcisig.com/specifications is private and you have to pay.
I have'n enough with the link http://www.microsoft.com/whdc/hwdev/archive/BUSBIOS/pciirq.mspx
I have'nt the red PCI book.
Then any one know where i can reach more info ? i want to know also what kind of information is showed in "lscpi". What is exactly interesting for you abaout "lspci -x" ?
Thanks a lot. Xavi.