Vse function dlja raboty s pci v /usr/include/linux/pci.h
naiti ustroistvo: pci_find_device
Resultatom budet ukazatel' na device, s nim i rabotai.
Dlja togo chtoby vunkcija vyzyvalas' kagdye 20 ms esli na urovne kernel posmotri kak rabotaut kernel thread i device drivers.
Esli na urovne user space: man setitimer; man signal; man sigaction