C++ USBDEVNAME函数代码示例

/* write 1byte to register */
Static int
url_csr_write_1(struct url_softc *sc, int reg, int aval)
{
	u_int8_t val = aval;

	DPRINTFN(0x100,
		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __func__));

	if (sc->sc_dying)
		return (0);

	return (url_mem(sc, URL_CMD_WRITEMEM, reg, &val, 1) ? -1 : 0);
}

/* alloc/free pipe */
static usbd_status
alloc_pipe(struct umidi_endpoint *ep)
{
	struct umidi_softc *sc = ep->sc;
	usbd_status err;
	usb_endpoint_descriptor_t *epd;
	
	epd = usbd_get_endpoint_descriptor(sc->sc_iface, ep->addr);
	/*
	 * For output, an improvement would be to have a buffer bigger than
	 * wMaxPacketSize by num_jacks-1 additional packet slots; that would
	 * allow out_solicit to fill the buffer to the full packet size in
	 * all cases. But to use usbd_alloc_buffer to get a slightly larger
	 * buffer would not be a good way to do that, because if the addition
	 * would make the buffer exceed USB_MEM_SMALL then a substantially
	 * larger block may be wastefully allocated. Some flavor of double
	 * buffering could serve the same purpose, but would increase the
	 * code complexity, so for now I will live with the current slight
	 * penalty of reducing max transfer size by (num_open-num_scheduled)
	 * packet slots.
	 */
	ep->buffer_size = UGETW(epd->wMaxPacketSize);
	ep->buffer_size -= ep->buffer_size % UMIDI_PACKET_SIZE;

	DPRINTF(("%s: alloc_pipe %p, buffer size %u\n",
	        USBDEVNAME(sc->sc_dev), ep, ep->buffer_size));
	ep->num_scheduled = 0;
	ep->this_schedule = 0;
	ep->next_schedule = 0;
	ep->soliciting = 0;
	ep->armed = 0;
	ep->xfer = usbd_alloc_xfer(sc->sc_udev);
	if (ep->xfer == NULL) {
	    err = USBD_NOMEM;
	    goto quit;
	}
	ep->buffer = usbd_alloc_buffer(ep->xfer, ep->buffer_size);
	if (ep->buffer == NULL) {
	    usbd_free_xfer(ep->xfer);
	    err = USBD_NOMEM;
	    goto quit;
	}
	ep->next_slot = ep->buffer;
	err = usbd_open_pipe(sc->sc_iface, ep->addr, 0, &ep->pipe);
	if (err)
	    usbd_free_xfer(ep->xfer);
	ep->solicit_cookie = softint_establish(SOFTINT_CLOCK, out_solicit, ep);
quit:
	return err;
}

Static usbd_status
uvscom_shutdown(struct uvscom_softc *sc)
{
	usb_device_request_t req;
	usbd_status err;

	DPRINTF(("%s: send shutdown\n", USBDEVNAME(sc->sc_dev)));

	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
	req.bRequest = UVSCOM_SHUTDOWN;
	USETW(req.wValue, 0);
	USETW(req.wIndex, 0);
	USETW(req.wLength, 0); 

	err = usbd_do_request(sc->sc_udev, &req, NULL); 
	if (err) {
		printf("%s: uvscom_shutdown: %s\n",
		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
		return (err);
	}

	return (USBD_NORMAL_COMPLETION);
}

Static void
umct_close(void *addr, int portno)
{
	struct umct_softc *sc;
	int err;

	sc = addr;
	if (sc->sc_ucom.sc_dying)
		return;

	if (sc->sc_intr_pipe != NULL) {
		err = usbd_abort_pipe(sc->sc_intr_pipe);
		if (err)
			printf("%s: abort interrupt pipe failed: %s\n",
			    USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err));
		err = usbd_close_pipe(sc->sc_intr_pipe);
		if (err)
			printf("%s: close interrupt pipe failed: %s\n",
			    USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err));
		free(sc->sc_intr_buf, M_USBDEV);
		sc->sc_intr_pipe = NULL;
	}
}

Static usbd_status
uvscom_set_line_coding(struct uvscom_softc *sc, uint16_t lsp, uint16_t ls)
{
	usb_device_request_t req;
	usbd_status err;

	DPRINTF(("%s: uvscom_set_line_coding: %02x %02x\n",
		 USBDEVNAME(sc->sc_dev), lsp, ls));

	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
	req.bRequest = UVSCOM_SET_SPEED;
	USETW(req.wValue, lsp);
	USETW(req.wIndex, 0);
	USETW(req.wLength, 0);

	err = usbd_do_request(sc->sc_udev, &req, NULL);
	if (err) {
		printf("%s: uvscom_set_line_coding: %s\n",
		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
		return (err);
	}

	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
	req.bRequest = UVSCOM_SET_PARAM;
	USETW(req.wValue, ls);
	USETW(req.wIndex, 0);
	USETW(req.wLength, 0);

	err = usbd_do_request(sc->sc_udev, &req, NULL);
	if (err) {
		printf("%s: uvscom_set_line_coding: %s\n",
		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
		return (err);
	}

	return (USBD_NORMAL_COMPLETION);
}

Static void
cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
    struct ue_chain	*c = priv;
    struct cdce_softc	*sc = c->ue_sc;
    struct ifnet		*ifp;
    usbd_status		 err;

    CDCE_LOCK(sc);
    ifp = GET_IFP(sc);

    if (sc->cdce_dying ||
            !(ifp->if_flags & IFF_RUNNING)) {
        CDCE_UNLOCK(sc);
        return;
    }

    if (status != USBD_NORMAL_COMPLETION) {
        if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
            CDCE_UNLOCK(sc);
            return;
        }
        ifp->if_oerrors++;
        printf("%s: usb error on tx: %s\n", USBDEVNAME(sc->cdce_dev),
               usbd_errstr(status));
        if (status == USBD_STALLED)
            usbd_clear_endpoint_stall(sc->cdce_bulkout_pipe);
        CDCE_UNLOCK(sc);
        return;
    }

    ifp->if_flags &= ~IFF_OACTIVE;
    usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);

    if (c->ue_mbuf != NULL) {
        c->ue_mbuf->m_pkthdr.rcvif = ifp;
        usb_tx_done(c->ue_mbuf);
        c->ue_mbuf = NULL;
    }

    if (err)
        ifp->if_oerrors++;
    else
        ifp->if_opackets++;

    CDCE_UNLOCK(sc);

    return;
}

static void
dump_sc(struct umidi_softc *sc)
{
	int i;

	DPRINTFN(10, ("%s: dump_sc\n", USBDEVNAME(sc->sc_dev)));
	for (i=0; i<sc->sc_out_num_endpoints; i++) {
		DPRINTFN(10, ("\tout_ep(%p):\n", &sc->sc_out_ep[i]));
		dump_ep(&sc->sc_out_ep[i]);
	}
	for (i=0; i<sc->sc_in_num_endpoints; i++) {
		DPRINTFN(10, ("\tin_ep(%p):\n", &sc->sc_in_ep[i]));
		dump_ep(&sc->sc_in_ep[i]);
	}
}

Static usbd_status
umass_init_insystem(struct umass_softc *sc)
{
	usbd_status err;

	err = usbd_set_interface(sc->sc_iface, 1);
	if (err) {
		DPRINTF(UDMASS_USB,
			("%s: could not switch to Alt Interface 1\n",
			USBDEVNAME(sc->sc_dev)));
		return (err);
	}

	return (USBD_NORMAL_COMPLETION);
}

Static usbd_status
uvscom_set_line(struct uvscom_softc *sc, uint16_t line)
{
	usb_device_request_t req;
	usbd_status err;

	DPRINTF(("%s: uvscom_set_line: %04x\n",
		 USBDEVNAME(sc->sc_ucom.sc_dev), line));

	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
	req.bRequest = UVSCOM_LINE_CTL;
	USETW(req.wValue, line);
	USETW(req.wIndex, 0);
	USETW(req.wLength, 0);

	err = usbd_do_request(sc->sc_ucom.sc_udev, &req, NULL);
	if (err) {
		printf("%s: uvscom_set_line: %s\n",
		       USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err));
		return (err);
	}

	return (USBD_NORMAL_COMPLETION);
}

Static void
ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
{
	struct ucom_softc *sc = (struct ucom_softc *)p;
	struct tty *tp = sc->sc_tty;
	u_int32_t cc;
	int s;

	DPRINTF(("ucomwritecb: status = %d\n", status));

	if (status == USBD_CANCELLED || sc->sc_dying)
		goto error;

	if (status != USBD_NORMAL_COMPLETION) {
		printf("%s: ucomwritecb: %s\n",
		       USBDEVNAME(sc->sc_dev), usbd_errstr(status));
		if (status == USBD_STALLED)
			usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
		/* XXX we should restart after some delay. */
		goto error;
	}

	usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
	DPRINTF(("ucomwritecb: cc = %d\n", cc));

	/* convert from USB bytes to tty bytes */
	cc -= sc->sc_opkthdrlen;

	s = spltty();
	CLR(tp->t_state, TS_BUSY);
	if (ISSET(tp->t_state, TS_FLUSH))
		CLR(tp->t_state, TS_FLUSH);
	else
		ndflush(&tp->t_outq, cc);
	(*linesw[tp->t_line].l_start)(tp);
	splx(s);

	return;

  error:
	s = spltty();
	CLR(tp->t_state, TS_BUSY);
	splx(s);
	return;
}

Static void
uvscom_rts(struct uvscom_softc *sc, int onoff)
{
	DPRINTF(("%s: uvscom_rts: onoff = %d\n",
		 USBDEVNAME(sc->sc_dev), onoff));

	if (sc->sc_rts == onoff)
		return;			/* no change */

	sc->sc_rts = onoff;

	if (onoff)
		SET(sc->sc_lcr, UVSCOM_RTS);
	else
		CLR(sc->sc_lcr, UVSCOM_RTS);

	uvscom_set_line(sc, sc->sc_lcr);
}

static int
ucomclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
{
	struct ucom_softc *sc;
	struct tty *tp;
	int s;

	USB_GET_SC(ucom, UCOMUNIT(dev), sc);

	tp = sc->sc_tty;

	DPRINTF(("%s: ucomclose: unit = %d\n",
		USBDEVNAME(sc->sc_dev), UCOMUNIT(dev)));

	if (!ISSET(tp->t_state, TS_ISOPEN))
		goto quit;

	s = spltty();
	(*linesw[tp->t_line].l_close)(tp, flag);
	disc_optim(tp, &tp->t_termios, sc);
	ttyclose(tp);
	splx(s);

	if (sc->sc_dying)
		goto quit;

	if (!ISSET(tp->t_state, TS_ISOPEN)) {
		/*
		 * Although we got a last close, the device may still be in
		 * use; e.g. if this was the dialout node, and there are still
		 * processes waiting for carrier on the non-dialout node.
		 */
		ucom_cleanup(sc);
	}

	if (sc->sc_callback->ucom_close != NULL)
		sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);

    quit:
	if (--sc->sc_refcnt < 0)
		usb_detach_wakeup(USBDEV(sc->sc_dev));

	return (0);
}

/*
 * TODO: the 0-based cable numbers will often not match the labeling of the
 * equipment. Ideally:
 *  For class-compliant devices: get the iJack string from the jack descriptor.
 *  Otherwise:
 *  - support a DISPLAY_BASE_CN quirk (add the value to each internal cable
 *    number for display)
 *  - support an array quirk explictly giving a char * for each jack.
 * For now, you get 0-based cable numbers. If there are multiple endpoints and
 * the CNs are not globally unique, each is shown with its associated endpoint
 * address in hex also. That should not be necessary when using iJack values
 * or a quirk array.
 */
static char *
describe_mididev(struct umidi_mididev *md)
{
	char in_label[16];
	char out_label[16];
	const char *unit_label;
	char *final_label;
	struct umidi_softc *sc;
	int show_ep_in;
	int show_ep_out;
	size_t len;
	
	sc = md->sc;
	show_ep_in  = sc-> sc_in_num_endpoints > 1 && !sc->cblnums_global;
	show_ep_out = sc->sc_out_num_endpoints > 1 && !sc->cblnums_global;
	
	if ( NULL != md->in_jack )
		snprintf(in_label, sizeof in_label,
		    show_ep_in ? "<%d(%x) " : "<%d ",
		    md->in_jack->cable_number,
		    md->in_jack->endpoint->addr);
	else
		in_label[0] = '\0';
	
	if ( NULL != md->out_jack )
		snprintf(out_label, sizeof out_label,
		    show_ep_out ? ">%d(%x) " : ">%d ",
		    md->out_jack->cable_number,
		    md->out_jack->endpoint->addr);
	else
		in_label[0] = '\0';

	unit_label = USBDEVNAME(sc->sc_dev);
	
	len = strlen(in_label) + strlen(out_label) + strlen(unit_label) + 4;
	
	final_label = malloc(len, M_USBDEV, M_WAITOK);
	
	snprintf(final_label, len, "%s%son %s",
	    in_label, out_label, unit_label);

	return final_label;
}

Static int
umct_request(struct umct_softc *sc, uint8_t request, int len, uint32_t value)
{
	usb_device_request_t req;
	usbd_status err;
	uint8_t oval[4];

	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
	req.bRequest = request;
	USETW(req.wValue, 0);
	USETW(req.wIndex, sc->sc_iface_number);
	USETW(req.wLength, len);
	USETDW(oval, value);

	err = usbd_do_request(sc->sc_ucom.sc_udev, &req, oval);
	if (err)
		printf("%s: ubsa_request: %s\n",
		    USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err));
	return (err);
}