HelenOS sources

XHCI_CAP_DBOFF     92 uspace/drv/bus/usb/xhci/debug.c 	DUMP_REG(cap, XHCI_CAP_DBOFF);
XHCI_CAP_DBOFF    213 uspace/drv/bus/usb/xhci/hc.c 	hc->db_arry  = (xhci_doorbell_t *) (base + XHCI_REG_RD(hc->cap_regs, XHCI_CAP_DBOFF));
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