pcidecomposetag
pcidecomposetag(net, NULL, &line, NULL);
void pcidecomposetag(unsigned, int *, int *, int *);
pcidecomposetag(bdf, &b, &d, &f);
pcidecomposetag(bdf, &b, &d, &f);
pcidecomposetag(bdf, &b, &d, &f);