TD_TOKEN_DEVADDR_SHIFT
(0x7f << TD_TOKEN_DEVADDR_SHIFT) | USB_PID_IN, 0);
#define uhci_devaddr(token) (((token) >> TD_TOKEN_DEVADDR_SHIFT) & 0x7f)
#define uhci_devep(token) (((token) >> TD_TOKEN_DEVADDR_SHIFT) & 0x7ff)