IPHYC
INB(dp, IPHYC, &val, &err, usberr);
OUTB(dp, IPHYC, val, &err, usberr);
INB(dp, IPHYC, &val, &err, usberr);
OUTB(dp, IPHYC, val | IPHYC_PHYR, &err, usberr);
OUTB(dp, IPHYC, val, &err, usberr);