示例#1
0
static void
uhid_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhid_softc *sc = usbd_xfer_softc(xfer);
	struct usb_device_request req;
	struct usb_page_cache *pc;
	uint32_t size = sc->sc_osize;
	uint32_t actlen;
	uint8_t id;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
	case USB_ST_SETUP:
		/* try to extract the ID byte */
		if (sc->sc_oid) {
			pc = usbd_xfer_get_frame(xfer, 0);
			if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
			    0, 1, &actlen, 0)) {
				if (actlen != 1) {
					goto tr_error;
				}
				usbd_copy_out(pc, 0, &id, 1);

			} else {
				return;
			}
			if (size) {
				size--;
			}
		} else {
			id = 0;
		}

		pc = usbd_xfer_get_frame(xfer, 1);
		if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
		    0, UHID_BSIZE, &actlen, 1)) {
			if (actlen != size) {
				goto tr_error;
			}
			uhid_fill_set_report
			    (&req, sc->sc_iface_no,
			    UHID_OUTPUT_REPORT, id, size);

			pc = usbd_xfer_get_frame(xfer, 0);
			usbd_copy_in(pc, 0, &req, sizeof(req));

			usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
			usbd_xfer_set_frame_len(xfer, 1, size);
			usbd_xfer_set_frames(xfer, size ? 2 : 1);
			usbd_transfer_submit(xfer);
		}
		return;

	default:
tr_error:
		/* bomb out */
		usb_fifo_get_data_error(sc->sc_fifo.fp[USB_FIFO_TX]);
		return;
	}
}
示例#2
0
文件: uhso.c 项目: vkhromov/freebsd
static void
uhso_mux_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhso_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	struct usb_device_request req;
	struct uhso_tty *ht;
	int actlen, len;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));

	ht = usbd_xfer_get_priv(xfer);
	UHSO_DPRINTF(3, "ht=%p open=%d\n", ht, ht->ht_open);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		/* Got data, send to ucom */
		pc = usbd_xfer_get_frame(xfer, 1);
		len = usbd_xfer_frame_len(xfer, 1);

		UHSO_DPRINTF(3, "got %d bytes on mux port %d\n", len,
		    ht->ht_muxport);
		if (len <= 0) {
			usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
			break;
		}

		/* Deliver data if the TTY is open, discard otherwise */
		if (ht->ht_open)
			ucom_put_data(&sc->sc_ucom[ht->ht_muxport], pc, 0, len);
		/* FALLTHROUGH */
	case USB_ST_SETUP:
tr_setup:
		memset(&req, 0, sizeof(struct usb_device_request));
		req.bmRequestType = UT_READ_CLASS_INTERFACE;
		req.bRequest = UCDC_GET_ENCAPSULATED_RESPONSE;
		USETW(req.wValue, 0);
		USETW(req.wIndex, ht->ht_muxport);
		USETW(req.wLength, 1024);

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_in(pc, 0, &req, sizeof(req));

		usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
		usbd_xfer_set_frame_len(xfer, 1, 1024);
		usbd_xfer_set_frames(xfer, 2);
		usbd_transfer_submit(xfer);
		break;
	default:
		UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
		if (error == USB_ERR_CANCELLED)
			break;
		usbd_xfer_set_stall(xfer);
		goto tr_setup;
	}
}
示例#3
0
文件: uhso.c 项目: vkhromov/freebsd
static void
uhso_mux_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhso_softc *sc = usbd_xfer_softc(xfer);
	struct uhso_tty *ht;
	struct usb_page_cache *pc;
	struct usb_device_request req;
	int actlen;
	struct usb_page_search res;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	ht = usbd_xfer_get_priv(xfer);
	UHSO_DPRINTF(3, "status=%d, using mux port %d\n",
	    USB_GET_STATE(xfer), ht->ht_muxport);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		UHSO_DPRINTF(3, "wrote %zd data bytes to muxport %d\n",
		    actlen - sizeof(struct usb_device_request) ,
		    ht->ht_muxport);
		/* FALLTHROUGH */
	case USB_ST_SETUP:
		pc = usbd_xfer_get_frame(xfer, 1);
		if (ucom_get_data(&sc->sc_ucom[ht->ht_muxport], pc,
		    0, 32, &actlen)) {

			usbd_get_page(pc, 0, &res);

			memset(&req, 0, sizeof(struct usb_device_request));
			req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
			req.bRequest = UCDC_SEND_ENCAPSULATED_COMMAND;
			USETW(req.wValue, 0);
			USETW(req.wIndex, ht->ht_muxport);
			USETW(req.wLength, actlen);

			pc = usbd_xfer_get_frame(xfer, 0);
			usbd_copy_in(pc, 0, &req, sizeof(req));

			usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
			usbd_xfer_set_frame_len(xfer, 1, actlen);
			usbd_xfer_set_frames(xfer, 2);

			UHSO_DPRINTF(3, "Prepared %d bytes for transmit "
			    "on muxport %d\n", actlen, ht->ht_muxport);

			usbd_transfer_submit(xfer);
		}
		break;
	default:
		UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
		if (error == USB_ERR_CANCELLED)
			break;
		break;
	}
}
示例#4
0
static void
cdce_intr_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	int actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:

		DPRINTF("Transferred %d bytes\n", actlen);

		/* FALLTHROUGH */
	case USB_ST_SETUP:
tr_setup:
#if 0
		usbd_xfer_set_frame_len(xfer, 0, XXX);
		usbd_transfer_submit(xfer);
#endif
		break;

	default:			/* Error */
		if (error != USB_ERR_CANCELLED) {
			/* start clear stall */
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
示例#5
0
文件: uhso.c 项目: vkhromov/freebsd
static void
uhso_bs_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhso_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	int actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
	case USB_ST_SETUP:
tr_setup:
		pc = usbd_xfer_get_frame(xfer, 0);
		if (ucom_get_data(&sc->sc_ucom[0], pc, 0, 8192, &actlen)) {
			usbd_xfer_set_frame_len(xfer, 0, actlen);
			usbd_transfer_submit(xfer);
		}
		break;
	break;
	default:
		UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
		if (error == USB_ERR_CANCELLED)
			break;
		usbd_xfer_set_stall(xfer);
		goto tr_setup;
	}
}
示例#6
0
文件: ng_ubt.c 项目: 2asoft/freebsd
static void
ubt_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ubt_softc	*sc = usbd_xfer_softc(xfer);
	int			n;
	int actlen, nframes;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, &nframes);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		for (n = 0; n < nframes; n ++)
			if (ubt_isoc_read_one_frame(xfer, n) < 0)
				break;
		/* FALLTHROUGH */

	case USB_ST_SETUP:
read_next:
		for (n = 0; n < nframes; n ++)
			usbd_xfer_set_frame_len(xfer, n,
			    usbd_xfer_max_framelen(xfer));

		usbd_transfer_submit(xfer);
		break;

	default: /* Error */
                if (error != USB_ERR_CANCELLED) {
                        UBT_STAT_IERROR(sc);
                        goto read_next;
                }

		/* transfer cancelled */
		break;
	}
} /* ubt_isoc_read_callback */
示例#7
0
static void
cdce_intr_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	int actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:

		DPRINTF("Received %d bytes\n", actlen);

		/* TODO: decode some indications */

		/* FALLTHROUGH */
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		if (error != USB_ERR_CANCELLED) {
			/* start clear stall */
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
示例#8
0
static void
usie_uc_status_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_page_cache *pc;
	struct {
		struct usb_device_request req;
		uint16_t param;
	}      st;
	uint32_t actlen;
	uint16_t param;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		DPRINTFN(4, "info received, actlen=%u\n", actlen);

		if (actlen < sizeof(st)) {
			DPRINTF("data too short actlen=%u\n", actlen);
			goto tr_setup;
		}
		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_out(pc, 0, &st, sizeof(st));

		if (st.req.bmRequestType == 0xa1 && st.req.bRequest == 0x20) {
			struct ucom_softc *ucom = usbd_xfer_softc(xfer);
			struct usie_softc *sc = ucom->sc_parent;

			param = le16toh(st.param);
			DPRINTF("param=%x\n", param);
			sc->sc_msr = sc->sc_lsr = 0;
			sc->sc_msr |= (param & USIE_DCD) ? SER_DCD : 0;
			sc->sc_msr |= (param & USIE_DSR) ? SER_DSR : 0;
			sc->sc_msr |= (param & USIE_RI) ? SER_RI : 0;
			sc->sc_msr |= (param & USIE_CTS) ? 0 : SER_CTS;
			sc->sc_msr |= (param & USIE_RTS) ? SER_RTS : 0;
			sc->sc_msr |= (param & USIE_DTR) ? SER_DTR : 0;
		}
		/* fall though */
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		DPRINTF("USB transfer error, %s\n",
		    usbd_errstr(error));

		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
示例#9
0
static void
usie_uc_rx_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ucom_softc *ucom = usbd_xfer_softc(xfer);
	struct usie_softc *sc = ucom->sc_parent;
	struct usb_page_cache *pc;
	uint32_t actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		pc = usbd_xfer_get_frame(xfer, 0);

		/* handle CnS response */
		if (ucom == sc->sc_ucom && actlen >= USIE_HIPCNS_MIN) {

			DPRINTF("transferred=%u\n", actlen);

			/* check if it is really CnS reply */
			usbd_copy_out(pc, 0, sc->sc_resp_temp, 1);

			if (sc->sc_resp_temp[0] == USIE_HIP_FRM_CHR) {

				/* verify actlen */
				if (actlen > USIE_BUFSIZE)
					actlen = USIE_BUFSIZE;

				/* get complete message */
				usbd_copy_out(pc, 0, sc->sc_resp_temp, actlen);
				usie_hip_rsp(sc, sc->sc_resp_temp, actlen);

				/* need to fall though */
				goto tr_setup;
			}
			/* else call ucom_put_data() */
		}
		/* standard ucom transfer */
		ucom_put_data(ucom, pc, 0, actlen);

		/* fall though */
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
/*------------------------------------------------------------------------*
 *	usb_handle_request_callback
 *
 * This function is the USB callback for generic USB Device control
 * transfers.
 *------------------------------------------------------------------------*/
void
usb_handle_request_callback(struct usb_xfer *xfer, usb_error_t error)
{
	usb_error_t err;

	/* check the current transfer state */

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_SETUP:
	case USB_ST_TRANSFERRED:

		/* handle the request */
		err = usb_handle_request(xfer);

		if (err) {

			if (err == USB_ERR_BAD_CONTEXT) {
				/* we need to re-setup the control transfer */
				usb_needs_explore(xfer->xroot->bus, 0);
				break;
			}
			goto tr_restart;
		}
		usbd_transfer_submit(xfer);
		break;

	default:
		/* check if a control transfer is active */
		if (xfer->flags_int.control_rem != 0xFFFF) {
			/* handle the request */
			err = usb_handle_request(xfer);
		}
		if (xfer->error != USB_ERR_CANCELLED) {
			/* should not happen - try stalling */
			goto tr_restart;
		}
		break;
	}
	return;

tr_restart:
	/*
	 * If a control transfer is active, stall it, and wait for the
	 * next control transfer.
	 */
	usbd_xfer_set_frame_len(xfer, 0, sizeof(struct usb_device_request));
	xfer->nframes = 1;
	xfer->flags.manual_status = 1;
	xfer->flags.force_short_xfer = 0;
	usbd_xfer_set_stall(xfer);	/* cancel previous transfer, if any */
	usbd_transfer_submit(xfer);
}
示例#11
0
static void
usie_uc_tx_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ucom_softc *ucom = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	uint32_t actlen;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
	case USB_ST_SETUP:
tr_setup:
		pc = usbd_xfer_get_frame(xfer, 0);

		/* handle CnS request */
		struct mbuf *m = usbd_xfer_get_priv(xfer);

		if (m != NULL) {
			usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
			usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
			usbd_xfer_set_priv(xfer, NULL);
			usbd_transfer_submit(xfer);
			m_freem(m);
			break;
		}
		/* standard ucom transfer */
		if (ucom_get_data(ucom, pc, 0, USIE_BUFSIZE, &actlen)) {
			usbd_xfer_set_frame_len(xfer, 0, actlen);
			usbd_transfer_submit(xfer);
		}
		break;

	default:			/* Error */
		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
static void
ugen_isoc_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_fifo *f = usbd_xfer_softc(xfer);
	usb_frlength_t actlen;
	usb_frlength_t offset;
	usb_frcount_t n;

	DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
	case USB_ST_SETUP:
tr_setup:
		offset = 0;
		for (n = 0; n != xfer->nframes; n++) {
			if (usb_fifo_get_data(f, xfer->frbuffers, offset,
			    xfer->max_frame_size, &actlen, 1)) {
				usbd_xfer_set_frame_len(xfer, n, actlen);
				offset += actlen;
			} else {
				break;
			}
		}

		for (; n != xfer->nframes; n++) {
			/* fill in zero frames */
			usbd_xfer_set_frame_len(xfer, n, 0);
		}
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		if (xfer->error == USB_ERR_CANCELLED) {
			break;
		}
		goto tr_setup;
	}
}
static void
ugen_default_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_fifo *f = usbd_xfer_softc(xfer);
	struct usb_mbuf *m;

	DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		if (xfer->actlen == 0) {
			if (f->fifo_zlp != 4) {
				f->fifo_zlp++;
			} else {
				/*
				 * Throttle a little bit we have multiple ZLPs
				 * in a row!
				 */
				xfer->interval = 64;	/* ms */
			}
		} else {
			/* clear throttle */
			xfer->interval = 0;
			f->fifo_zlp = 0;
		}
		usb_fifo_put_data(f, xfer->frbuffers, 0,
		    xfer->actlen, 1);

	case USB_ST_SETUP:
		if (f->flag_stall) {
			usbd_transfer_start(f->xfer[1]);
			break;
		}
		USB_IF_POLL(&f->free_q, m);
		if (m) {
			usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
			usbd_transfer_submit(xfer);
		}
		break;

	default:			/* Error */
		if (xfer->error != USB_ERR_CANCELLED) {
			/* send a zero length packet to userland */
			usb_fifo_put_data(f, xfer->frbuffers, 0, 0, 1);
			f->flag_stall = 1;
			f->fifo_zlp = 0;
			usbd_transfer_start(f->xfer[1]);
		}
		break;
	}
}
示例#14
0
static void
uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhid_softc *sc = usbd_xfer_softc(xfer);
	struct usb_device_request req;
	struct usb_page_cache *pc;

	pc = usbd_xfer_get_frame(xfer, 0);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req),
		    sc->sc_isize, 1);
		return;

	case USB_ST_SETUP:

		if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) {

			uhid_fill_get_report
			    (&req, sc->sc_iface_no, UHID_INPUT_REPORT,
			    sc->sc_iid, sc->sc_isize);

			usbd_copy_in(pc, 0, &req, sizeof(req));

			usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
			usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize);
			usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1);
			usbd_transfer_submit(xfer);
		}
		return;

	default:			/* Error */
		/* bomb out */
		usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]);
		return;
	}
}
示例#15
0
文件: uhso.c 项目: vkhromov/freebsd
/*
 * Interrupt callback for the multiplexed serial port. Indicates
 * which serial port has data waiting.
 */
static void
uhso_mux_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_page_cache *pc;
	struct usb_page_search res;
	struct uhso_softc *sc = usbd_xfer_softc(xfer);
	unsigned int i, mux;

	UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		/*
		 * The multiplexed port number can be found at the first byte.
		 * It contains a bit mask, we transform this in to an integer.
		 */
		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_get_page(pc, 0, &res);

		i = *((unsigned char *)res.buffer);
		mux = 0;
		while (i >>= 1) {
			mux++;
		}

		UHSO_DPRINTF(3, "mux port %d (%d)\n", mux, i);
		if (mux > UHSO_MPORT_TYPE_NOMAX)
			break;

		/* Issue a read for this serial port */
		usbd_xfer_set_priv(
		    sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ],
		    &sc->sc_tty[mux]);
		usbd_transfer_start(sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ]);

		break;
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;
	default:
		UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
		if (error == USB_ERR_CANCELLED)
			break;

		usbd_xfer_set_stall(xfer);
		goto tr_setup;
	}
}
示例#16
0
static void
usie_if_status_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usie_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	struct usb_cdc_notification cdc;
	uint32_t actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		DPRINTFN(4, "info received, actlen=%d\n", actlen);

		/* usb_cdc_notification - .data[16] */
		if (actlen < (sizeof(cdc) - 16)) {
			DPRINTF("data too short %d\n", actlen);
			goto tr_setup;
		}
		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_out(pc, 0, &cdc, (sizeof(cdc) - 16));

		DPRINTFN(4, "bNotification=%x\n", cdc.bNotification);

		if (cdc.bNotification & UCDC_N_RESPONSE_AVAILABLE) {
			taskqueue_enqueue(taskqueue_thread,
			    &sc->sc_if_status_task);
		}
		/* fall though */
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		DPRINTF("USB transfer error, %s\n",
		    usbd_errstr(error));

		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
示例#17
0
文件: uhso.c 项目: vkhromov/freebsd
static void
uhso_ifnet_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct uhso_softc *sc = usbd_xfer_softc(xfer);
	struct mbuf *m;	
	struct usb_page_cache *pc;
	int actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	UHSO_DPRINTF(3, "status=%d, actlen=%d\n", USB_GET_STATE(xfer), actlen);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		if (actlen > 0 && (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)) {
			pc = usbd_xfer_get_frame(xfer, 0);
			m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
			usbd_copy_out(pc, 0, mtod(m, uint8_t *), actlen);
			m->m_pkthdr.len = m->m_len = actlen;
			/* Enqueue frame for further processing */
			_IF_ENQUEUE(&sc->sc_rxq, m);
			if (!callout_pending(&sc->sc_c) ||
			    !callout_active(&sc->sc_c)) {
				callout_schedule(&sc->sc_c, 1);
			}
		}
	/* FALLTHROUGH */
	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;
	default:
		UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
		if (error == USB_ERR_CANCELLED)
			break;
		usbd_xfer_set_stall(xfer);
		goto tr_setup;
	}
static void
ugen_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_fifo *f = usbd_xfer_softc(xfer);
	usb_frlength_t offset;
	usb_frcount_t n;

	DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:

		DPRINTFN(6, "actlen=%d\n", xfer->actlen);

		offset = 0;

		for (n = 0; n != xfer->aframes; n++) {
			usb_fifo_put_data(f, xfer->frbuffers, offset,
			    xfer->frlengths[n], 1);
			offset += xfer->max_frame_size;
		}

	case USB_ST_SETUP:
tr_setup:
		for (n = 0; n != xfer->nframes; n++) {
			/* setup size for next transfer */
			usbd_xfer_set_frame_len(xfer, n, xfer->max_frame_size);
		}
		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		if (xfer->error == USB_ERR_CANCELLED) {
			break;
		}
		goto tr_setup;
	}
}
static void
ugen_default_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usb_fifo *f = usbd_xfer_softc(xfer);
	usb_frlength_t actlen;

	DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_SETUP:
	case USB_ST_TRANSFERRED:
		/*
		 * If writing is in stall, just jump to clear stall
		 * callback and solve the situation.
		 */
		if (f->flag_stall) {
			usbd_transfer_start(f->xfer[1]);
			break;
		}
		/*
		 * Write data, setup and perform hardware transfer.
		 */
		if (usb_fifo_get_data(f, xfer->frbuffers, 0,
		    xfer->max_data_length, &actlen, 0)) {
			usbd_xfer_set_frame_len(xfer, 0, actlen);
			usbd_transfer_submit(xfer);
		}
		break;

	default:			/* Error */
		if (xfer->error != USB_ERR_CANCELLED) {
			f->flag_stall = 1;
			usbd_transfer_start(f->xfer[1]);
		}
		break;
	}
}
示例#20
0
static void
cdce_ncm_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct cdce_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc = usbd_xfer_get_frame(xfer, 0);
	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
	struct mbuf *m;
	int sumdata;
	int sumlen;
	int actlen;
	int aframes;
	int temp;
	int nframes;
	int x;
	int offset;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:

		usbd_xfer_status(xfer, &actlen, &sumlen, &aframes, NULL);

		DPRINTFN(1, "received %u bytes in %u frames\n",
		    actlen, aframes);

		if (actlen < (sizeof(sc->sc_ncm.hdr) +
		    sizeof(sc->sc_ncm.dpt))) {
			DPRINTFN(1, "frame too short\n");
			goto tr_setup;
		}
		usbd_copy_out(pc, 0, &(sc->sc_ncm.hdr),
		    sizeof(sc->sc_ncm.hdr));

		if ((sc->sc_ncm.hdr.dwSignature[0] != 'N') ||
		    (sc->sc_ncm.hdr.dwSignature[1] != 'C') ||
		    (sc->sc_ncm.hdr.dwSignature[2] != 'M') ||
		    (sc->sc_ncm.hdr.dwSignature[3] != 'H')) {
			DPRINTFN(1, "invalid HDR signature: "
			    "0x%02x:0x%02x:0x%02x:0x%02x\n",
			    sc->sc_ncm.hdr.dwSignature[0],
			    sc->sc_ncm.hdr.dwSignature[1],
			    sc->sc_ncm.hdr.dwSignature[2],
			    sc->sc_ncm.hdr.dwSignature[3]);
			goto tr_stall;
		}
		temp = UGETW(sc->sc_ncm.hdr.wBlockLength);
		if (temp > sumlen) {
			DPRINTFN(1, "unsupported block length %u/%u\n",
			    temp, sumlen);
			goto tr_stall;
		}
		temp = UGETW(sc->sc_ncm.hdr.wDptIndex);
		if ((temp + sizeof(sc->sc_ncm.dpt)) > actlen) {
			DPRINTFN(1, "invalid DPT index: 0x%04x\n", temp);
			goto tr_stall;
		}
		usbd_copy_out(pc, temp, &(sc->sc_ncm.dpt),
		    sizeof(sc->sc_ncm.dpt));

		if ((sc->sc_ncm.dpt.dwSignature[0] != 'N') ||
		    (sc->sc_ncm.dpt.dwSignature[1] != 'C') ||
		    (sc->sc_ncm.dpt.dwSignature[2] != 'M') ||
		    (sc->sc_ncm.dpt.dwSignature[3] != '0')) {
			DPRINTFN(1, "invalid DPT signature"
			    "0x%02x:0x%02x:0x%02x:0x%02x\n",
			    sc->sc_ncm.dpt.dwSignature[0],
			    sc->sc_ncm.dpt.dwSignature[1],
			    sc->sc_ncm.dpt.dwSignature[2],
			    sc->sc_ncm.dpt.dwSignature[3]);
			goto tr_stall;
		}
		nframes = UGETW(sc->sc_ncm.dpt.wLength) / 4;

		/* Subtract size of header and last zero padded entry */
		if (nframes >= (2 + 1))
			nframes -= (2 + 1);
		else
			nframes = 0;

		DPRINTFN(1, "nframes = %u\n", nframes);

		temp += sizeof(sc->sc_ncm.dpt);

		if ((temp + (4 * nframes)) > actlen)
			goto tr_stall;

		if (nframes > CDCE_NCM_SUBFRAMES_MAX) {
			DPRINTFN(1, "Truncating number of frames from %u to %u\n",
			    nframes, CDCE_NCM_SUBFRAMES_MAX);
			nframes = CDCE_NCM_SUBFRAMES_MAX;
		}
		usbd_copy_out(pc, temp, &(sc->sc_ncm.dp), (4 * nframes));

		sumdata = 0;

		for (x = 0; x != nframes; x++) {

			offset = UGETW(sc->sc_ncm.dp[x].wFrameIndex);
			temp = UGETW(sc->sc_ncm.dp[x].wFrameLength);

			if ((offset == 0) ||
			    (temp < sizeof(struct ether_header)) ||
			    (temp > (MCLBYTES - ETHER_ALIGN))) {
				DPRINTFN(1, "NULL frame detected at %d\n", x);
				m = NULL;
				/* silently ignore this frame */
				continue;
			} else if ((offset + temp) > actlen) {
				DPRINTFN(1, "invalid frame "
				    "detected at %d\n", x);
				m = NULL;
				/* silently ignore this frame */
				continue;
			} else if (temp > (MHLEN - ETHER_ALIGN)) {
				m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
			} else {
				m = m_gethdr(M_DONTWAIT, MT_DATA);
			}

			DPRINTFN(16, "frame %u, offset = %u, length = %u \n",
			    x, offset, temp);

			/* check if we have a buffer */
			if (m) {
				m_adj(m, ETHER_ALIGN);

				usbd_copy_out(pc, offset, m->m_data, temp);

				/* enqueue */
				uether_rxmbuf(&sc->sc_ue, m, temp);

				sumdata += temp;
			} else {
				ifp->if_ierrors++;
			}
		}

		DPRINTFN(1, "Efficiency: %u/%u bytes\n", sumdata, actlen);

	case USB_ST_SETUP:
tr_setup:
		usbd_xfer_set_frame_len(xfer, 0, sc->sc_ncm.rx_max);
		usbd_xfer_set_frames(xfer, 1);
		usbd_transfer_submit(xfer);
		uether_rxflush(&sc->sc_ue);	/* must be last */
		break;

	default:			/* Error */
		DPRINTFN(1, "error = %s\n",
		    usbd_errstr(error));

		if (error != USB_ERR_CANCELLED) {
tr_stall:
			/* try to clear stall first */
			usbd_xfer_set_stall(xfer);
			usbd_xfer_set_frames(xfer, 0);
			usbd_transfer_submit(xfer);
		}
		break;
	}
}
static int
ugen_fs_copy_in(struct usb_fifo *f, uint8_t ep_index)
{
	struct usb_device_request *req;
	struct usb_xfer *xfer;
	struct usb_fs_endpoint fs_ep;
	void *uaddr;			/* userland pointer */
	void *kaddr;
	usb_frlength_t offset;
	usb_frlength_t rem;
	usb_frcount_t n;
	uint32_t length;
	int error;
	uint8_t isread;

	if (ep_index >= f->fs_ep_max) {
		return (EINVAL);
	}
	xfer = f->fs_xfer[ep_index];
	if (xfer == NULL) {
		return (EINVAL);
	}
	mtx_lock(f->priv_mtx);
	if (usbd_transfer_pending(xfer)) {
		mtx_unlock(f->priv_mtx);
		return (EBUSY);		/* should not happen */
	}
	mtx_unlock(f->priv_mtx);

	error = copyin(f->fs_ep_ptr +
	    ep_index, &fs_ep, sizeof(fs_ep));
	if (error) {
		return (error);
	}
	/* security checks */

	if (fs_ep.nFrames > xfer->max_frame_count) {
		xfer->error = USB_ERR_INVAL;
		goto complete;
	}
	if (fs_ep.nFrames == 0) {
		xfer->error = USB_ERR_INVAL;
		goto complete;
	}
	error = copyin(fs_ep.ppBuffer,
	    &uaddr, sizeof(uaddr));
	if (error) {
		return (error);
	}
	/* reset first frame */
	usbd_xfer_set_frame_offset(xfer, 0, 0);

	if (xfer->flags_int.control_xfr) {

		req = xfer->frbuffers[0].buffer;

		error = copyin(fs_ep.pLength,
		    &length, sizeof(length));
		if (error) {
			return (error);
		}
		if (length != sizeof(*req)) {
			xfer->error = USB_ERR_INVAL;
			goto complete;
		}
		if (length != 0) {
			error = copyin(uaddr, req, length);
			if (error) {
				return (error);
			}
		}
		if (ugen_check_request(f->udev, req)) {
			xfer->error = USB_ERR_INVAL;
			goto complete;
		}
		usbd_xfer_set_frame_len(xfer, 0, length);

		/* Host mode only ! */
		if ((req->bmRequestType &
		    (UT_READ | UT_WRITE)) == UT_READ) {
			isread = 1;
		} else {
			isread = 0;
		}
		n = 1;
		offset = sizeof(*req);

	} else {
		/* Device and Host mode */
		if (USB_GET_DATA_ISREAD(xfer)) {
			isread = 1;
		} else {
			isread = 0;
		}
		n = 0;
		offset = 0;
	}

	rem = usbd_xfer_max_len(xfer);
	xfer->nframes = fs_ep.nFrames;
	xfer->timeout = fs_ep.timeout;
	if (xfer->timeout > 65535) {
		xfer->timeout = 65535;
	}
	if (fs_ep.flags & USB_FS_FLAG_SINGLE_SHORT_OK)
		xfer->flags.short_xfer_ok = 1;
	else
		xfer->flags.short_xfer_ok = 0;

	if (fs_ep.flags & USB_FS_FLAG_MULTI_SHORT_OK)
		xfer->flags.short_frames_ok = 1;
	else
		xfer->flags.short_frames_ok = 0;

	if (fs_ep.flags & USB_FS_FLAG_FORCE_SHORT)
		xfer->flags.force_short_xfer = 1;
	else
		xfer->flags.force_short_xfer = 0;

	if (fs_ep.flags & USB_FS_FLAG_CLEAR_STALL)
		usbd_xfer_set_stall(xfer);
	else
		xfer->flags.stall_pipe = 0;

	for (; n != xfer->nframes; n++) {

		error = copyin(fs_ep.pLength + n,
		    &length, sizeof(length));
		if (error) {
			break;
		}
		usbd_xfer_set_frame_len(xfer, n, length);

		if (length > rem) {
			xfer->error = USB_ERR_INVAL;
			goto complete;
		}
		rem -= length;

		if (!isread) {

			/* we need to know the source buffer */
			error = copyin(fs_ep.ppBuffer + n,
			    &uaddr, sizeof(uaddr));
			if (error) {
				break;
			}
			if (xfer->flags_int.isochronous_xfr) {
				/* get kernel buffer address */
				kaddr = xfer->frbuffers[0].buffer;
				kaddr = USB_ADD_BYTES(kaddr, offset);
			} else {
				/* set current frame offset */
				usbd_xfer_set_frame_offset(xfer, offset, n);

				/* get kernel buffer address */
				kaddr = xfer->frbuffers[n].buffer;
			}

			/* move data */
			error = copyin(uaddr, kaddr, length);
			if (error) {
				break;
			}
		}
		offset += length;
	}
	return (error);

complete:
	mtx_lock(f->priv_mtx);
	ugen_fs_set_complete(f, ep_index);
	mtx_unlock(f->priv_mtx);
	return (0);
}
示例#22
0
static void
usbd_non_isoc_callback(struct usb_xfer *xfer, usb_error_t error)
{
	irp *ip;
	struct ndis_softc *sc = usbd_xfer_softc(xfer);
	struct ndisusb_ep *ne = usbd_xfer_get_priv(xfer);
	struct ndisusb_xfer *nx;
	struct usbd_urb_bulk_or_intr_transfer *ubi;
	struct usb_page_cache *pc;
	uint8_t irql;
	uint32_t len;
	union usbd_urb *urb;
	usb_endpoint_descriptor_t *ep;
	int actlen, sumlen;

	usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		nx = usbd_aq_getfirst(sc, ne);
		pc = usbd_xfer_get_frame(xfer, 0);
		if (nx == NULL)
			return;

		/* copy in data with regard to the URB */
		if (ne->ne_dirin != 0)
			usbd_copy_out(pc, 0, nx->nx_urbbuf, actlen);
		nx->nx_urbbuf += actlen;
		nx->nx_urbactlen += actlen;
		nx->nx_urblen -= actlen;

		/* check for short transfer */
		if (actlen < sumlen)
			nx->nx_urblen = 0;
		else {
			/* check remainder */
			if (nx->nx_urblen > 0) {
				KeAcquireSpinLock(&ne->ne_lock, &irql);
				InsertHeadList((&ne->ne_active), (&nx->nx_next));
				KeReleaseSpinLock(&ne->ne_lock, irql);

				ip = nx->nx_priv;
				urb = usbd_geturb(ip);
				ubi = &urb->uu_bulkintr;
				ep = ubi->ubi_epdesc;
				goto extra;
			}
		}
		usbd_xfer_complete(sc, ne, nx,
		    ((actlen < sumlen) && (nx->nx_shortxfer == 0)) ?
		    USB_ERR_SHORT_XFER : USB_ERR_NORMAL_COMPLETION);

		/* fall through */
	case USB_ST_SETUP:
next:
		/* get next transfer */
		KeAcquireSpinLock(&ne->ne_lock, &irql);
		if (IsListEmpty(&ne->ne_pending)) {
			KeReleaseSpinLock(&ne->ne_lock, irql);
			return;
		}
		nx = CONTAINING_RECORD(ne->ne_pending.nle_flink,
		    struct ndisusb_xfer, nx_next);
		RemoveEntryList(&nx->nx_next);
		/* add a entry to the active queue's tail.  */
		InsertTailList((&ne->ne_active), (&nx->nx_next));
		KeReleaseSpinLock(&ne->ne_lock, irql);

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		ubi = &urb->uu_bulkintr;
		ep = ubi->ubi_epdesc;

		nx->nx_urbbuf		= ubi->ubi_trans_buf;
		nx->nx_urbactlen	= 0;
		nx->nx_urblen		= ubi->ubi_trans_buflen;
		nx->nx_shortxfer	= (ubi->ubi_trans_flags &
		    USBD_SHORT_TRANSFER_OK) ? 1 : 0;
extra:
		len = MIN(usbd_xfer_max_len(xfer), nx->nx_urblen);
		pc = usbd_xfer_get_frame(xfer, 0);
		if (UE_GET_DIR(ep->bEndpointAddress) == UE_DIR_OUT)
			usbd_copy_in(pc, 0, nx->nx_urbbuf, len);
		usbd_xfer_set_frame_len(xfer, 0, len);
		usbd_xfer_set_frames(xfer, 1);
		usbd_transfer_submit(xfer);
		break;
	default:
		nx = usbd_aq_getfirst(sc, ne);
		if (nx == NULL)
			return;
		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			device_printf(sc->ndis_dev, "usb xfer warning (%s)\n",
			    usbd_errstr(error));
		}
		usbd_xfer_complete(sc, ne, nx, error);
		if (error != USB_ERR_CANCELLED)
			goto next;
		break;
	}
}
/*------------------------------------------------------------------------*
 *	usb_handle_request
 *
 * Internal state sequence:
 *
 * USB_HR_NOT_COMPLETE -> USB_HR_COMPLETE_OK v USB_HR_COMPLETE_ERR
 *
 * Returns:
 * 0: Ready to start hardware
 * Else: Stall current transfer, if any
 *------------------------------------------------------------------------*/
static usb_error_t
usb_handle_request(struct usb_xfer *xfer)
{
	struct usb_device_request req;
	struct usb_device *udev;
	const void *src_zcopy;		/* zero-copy source pointer */
	const void *src_mcopy;		/* non zero-copy source pointer */
	uint16_t off;			/* data offset */
	uint16_t rem;			/* data remainder */
	uint16_t max_len;		/* max fragment length */
	uint16_t wValue;
	uint16_t wIndex;
	uint8_t state;
	uint8_t is_complete = 1;
	usb_error_t err;
	union {
		uWord	wStatus;
		uint8_t	buf[2];
	}     temp;

	/*
	 * Filter the USB transfer state into
	 * something which we understand:
	 */

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_SETUP:
		state = USB_HR_NOT_COMPLETE;

		if (!xfer->flags_int.control_act) {
			/* nothing to do */
			goto tr_stalled;
		}
		break;
	case USB_ST_TRANSFERRED:
		if (!xfer->flags_int.control_act) {
			state = USB_HR_COMPLETE_OK;
		} else {
			state = USB_HR_NOT_COMPLETE;
		}
		break;
	default:
		state = USB_HR_COMPLETE_ERR;
		break;
	}

	/* reset frame stuff */

	usbd_xfer_set_frame_len(xfer, 0, 0);

	usbd_xfer_set_frame_offset(xfer, 0, 0);
	usbd_xfer_set_frame_offset(xfer, sizeof(req), 1);

	/* get the current request, if any */

	usbd_copy_out(xfer->frbuffers, 0, &req, sizeof(req));

	if (xfer->flags_int.control_rem == 0xFFFF) {
		/* first time - not initialised */
		rem = UGETW(req.wLength);
		off = 0;
	} else {
		/* not first time - initialised */
		rem = xfer->flags_int.control_rem;
		off = UGETW(req.wLength) - rem;
	}

	/* set some defaults */

	max_len = 0;
	src_zcopy = NULL;
	src_mcopy = NULL;
	udev = xfer->xroot->udev;

	/* get some request fields decoded */

	wValue = UGETW(req.wValue);
	wIndex = UGETW(req.wIndex);

	DPRINTF("req 0x%02x 0x%02x 0x%04x 0x%04x "
	    "off=0x%x rem=0x%x, state=%d\n", req.bmRequestType,
	    req.bRequest, wValue, wIndex, off, rem, state);

	/* demultiplex the control request */

	switch (req.bmRequestType) {
	case UT_READ_DEVICE:
		if (state != USB_HR_NOT_COMPLETE) {
			break;
		}
		switch (req.bRequest) {
		case UR_GET_DESCRIPTOR:
			goto tr_handle_get_descriptor;
		case UR_GET_CONFIG:
			goto tr_handle_get_config;
		case UR_GET_STATUS:
			goto tr_handle_get_status;
		default:
			goto tr_stalled;
		}
		break;

	case UT_WRITE_DEVICE:
		switch (req.bRequest) {
		case UR_SET_ADDRESS:
			goto tr_handle_set_address;
		case UR_SET_CONFIG:
			goto tr_handle_set_config;
		case UR_CLEAR_FEATURE:
			switch (wValue) {
			case UF_DEVICE_REMOTE_WAKEUP:
				goto tr_handle_clear_wakeup;
			default:
				goto tr_stalled;
			}
			break;
		case UR_SET_FEATURE:
			switch (wValue) {
			case UF_DEVICE_REMOTE_WAKEUP:
				goto tr_handle_set_wakeup;
			default:
				goto tr_stalled;
			}
			break;
		default:
			goto tr_stalled;
		}
		break;

	case UT_WRITE_ENDPOINT:
		switch (req.bRequest) {
		case UR_CLEAR_FEATURE:
			switch (wValue) {
			case UF_ENDPOINT_HALT:
				goto tr_handle_clear_halt;
			default:
				goto tr_stalled;
			}
			break;
		case UR_SET_FEATURE:
			switch (wValue) {
			case UF_ENDPOINT_HALT:
				goto tr_handle_set_halt;
			default:
				goto tr_stalled;
			}
			break;
		default:
			goto tr_stalled;
		}
		break;

	case UT_READ_ENDPOINT:
		switch (req.bRequest) {
		case UR_GET_STATUS:
			goto tr_handle_get_ep_status;
		default:
			goto tr_stalled;
		}
		break;
	default:
		/* we use "USB_ADD_BYTES" to de-const the src_zcopy */
		err = usb_handle_iface_request(xfer,
		    USB_ADD_BYTES(&src_zcopy, 0),
		    &max_len, req, off, state);
		if (err == 0) {
			is_complete = 0;
			goto tr_valid;
		} else if (err == USB_ERR_SHORT_XFER) {
			goto tr_valid;
		}
		/*
		 * Reset zero-copy pointer and max length
		 * variable in case they were unintentionally
		 * set:
		 */
		src_zcopy = NULL;
		max_len = 0;

		/*
		 * Check if we have a vendor specific
		 * descriptor:
		 */
		goto tr_handle_get_descriptor;
	}
	goto tr_valid;

tr_handle_get_descriptor:
	err = (usb_temp_get_desc_p) (udev, &req, &src_zcopy, &max_len);
	if (err)
		goto tr_stalled;
	if (src_zcopy == NULL)
		goto tr_stalled;
	goto tr_valid;

tr_handle_get_config:
	temp.buf[0] = udev->curr_config_no;
	src_mcopy = temp.buf;
	max_len = 1;
	goto tr_valid;

tr_handle_get_status:

	wValue = 0;

	USB_BUS_LOCK(udev->bus);
	if (udev->flags.remote_wakeup) {
		wValue |= UDS_REMOTE_WAKEUP;
	}
	if (udev->flags.self_powered) {
		wValue |= UDS_SELF_POWERED;
	}
	USB_BUS_UNLOCK(udev->bus);

	USETW(temp.wStatus, wValue);
	src_mcopy = temp.wStatus;
	max_len = sizeof(temp.wStatus);
	goto tr_valid;

tr_handle_set_address:
	if (state == USB_HR_NOT_COMPLETE) {
		if (wValue >= 0x80) {
			/* invalid value */
			goto tr_stalled;
		} else if (udev->curr_config_no != 0) {
			/* we are configured ! */
			goto tr_stalled;
		}
	} else if (state != USB_HR_NOT_COMPLETE) {
		udev->address = (wValue & 0x7F);
		goto tr_bad_context;
	}
	goto tr_valid;

tr_handle_set_config:
	if (state == USB_HR_NOT_COMPLETE) {
		if (usb_handle_set_config(xfer, req.wValue[0])) {
			goto tr_stalled;
		}
	}
	goto tr_valid;

tr_handle_clear_halt:
	if (state == USB_HR_NOT_COMPLETE) {
		if (usb_handle_set_stall(xfer, req.wIndex[0], 0)) {
			goto tr_stalled;
		}
	}
	goto tr_valid;

tr_handle_clear_wakeup:
	if (state == USB_HR_NOT_COMPLETE) {
		if (usb_handle_remote_wakeup(xfer, 0)) {
			goto tr_stalled;
		}
	}
	goto tr_valid;

tr_handle_set_halt:
	if (state == USB_HR_NOT_COMPLETE) {
		if (usb_handle_set_stall(xfer, req.wIndex[0], 1)) {
			goto tr_stalled;
		}
	}
	goto tr_valid;

tr_handle_set_wakeup:
	if (state == USB_HR_NOT_COMPLETE) {
		if (usb_handle_remote_wakeup(xfer, 1)) {
			goto tr_stalled;
		}
	}
	goto tr_valid;

tr_handle_get_ep_status:
	if (state == USB_HR_NOT_COMPLETE) {
		temp.wStatus[0] =
		    usb_handle_get_stall(udev, req.wIndex[0]);
		temp.wStatus[1] = 0;
		src_mcopy = temp.wStatus;
		max_len = sizeof(temp.wStatus);
	}
	goto tr_valid;

tr_valid:
	if (state != USB_HR_NOT_COMPLETE) {
		goto tr_stalled;
	}
	/* subtract offset from length */

	max_len -= off;

	/* Compute the real maximum data length */

	if (max_len > xfer->max_data_length) {
		max_len = usbd_xfer_max_len(xfer);
	}
	if (max_len > rem) {
		max_len = rem;
	}
	/*
	 * If the remainder is greater than the maximum data length,
	 * we need to truncate the value for the sake of the
	 * comparison below:
	 */
	if (rem > xfer->max_data_length) {
		rem = usbd_xfer_max_len(xfer);
	}
	if ((rem != max_len) && (is_complete != 0)) {
		/*
	         * If we don't transfer the data we can transfer, then
	         * the transfer is short !
	         */
		xfer->flags.force_short_xfer = 1;
		xfer->nframes = 2;
	} else {
		/*
		 * Default case
		 */
		xfer->flags.force_short_xfer = 0;
		xfer->nframes = max_len ? 2 : 1;
	}
	if (max_len > 0) {
		if (src_mcopy) {
			src_mcopy = USB_ADD_BYTES(src_mcopy, off);
			usbd_copy_in(xfer->frbuffers + 1, 0,
			    src_mcopy, max_len);
			usbd_xfer_set_frame_len(xfer, 1, max_len);
		} else {
			usbd_xfer_set_frame_data(xfer, 1,
			    USB_ADD_BYTES(src_zcopy, off), max_len);
		}
	} else {
		/* the end is reached, send status */
		xfer->flags.manual_status = 0;
		usbd_xfer_set_frame_len(xfer, 1, 0);
	}
	DPRINTF("success\n");
	return (0);			/* success */

tr_stalled:
	DPRINTF("%s\n", (state != USB_HR_NOT_COMPLETE) ?
	    "complete" : "stalled");
	return (USB_ERR_STALLED);

tr_bad_context:
	DPRINTF("bad context\n");
	return (USB_ERR_BAD_CONTEXT);
}
示例#24
0
文件: ng_ubt.c 项目: 2asoft/freebsd
static void
ubt_ctrl_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ubt_softc		*sc = usbd_xfer_softc(xfer);
	struct usb_device_request	req;
	struct mbuf			*m;
	struct usb_page_cache		*pc;
	int				actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		UBT_INFO(sc, "sent %d bytes to control pipe\n", actlen);
		UBT_STAT_BYTES_SENT(sc, actlen);
		UBT_STAT_PCKTS_SENT(sc);
		/* FALLTHROUGH */

	case USB_ST_SETUP:
send_next:
		/* Get next command mbuf, if any */
		UBT_NG_LOCK(sc);
		NG_BT_MBUFQ_DEQUEUE(&sc->sc_cmdq, m);
		UBT_NG_UNLOCK(sc);

		if (m == NULL) {
			UBT_INFO(sc, "HCI command queue is empty\n");
			break;	/* transfer complete */
		}

		/* Initialize a USB control request and then schedule it */
		bzero(&req, sizeof(req));
		req.bmRequestType = UBT_HCI_REQUEST;
		USETW(req.wLength, m->m_pkthdr.len);

		UBT_INFO(sc, "Sending control request, " \
			"bmRequestType=0x%02x, wLength=%d\n",
			req.bmRequestType, UGETW(req.wLength));

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_in(pc, 0, &req, sizeof(req));
		pc = usbd_xfer_get_frame(xfer, 1);
		usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);

		usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
		usbd_xfer_set_frame_len(xfer, 1, m->m_pkthdr.len);
		usbd_xfer_set_frames(xfer, 2);

		NG_FREE_M(m);

		usbd_transfer_submit(xfer);
		break;

	default: /* Error */
		if (error != USB_ERR_CANCELLED) {
			UBT_WARN(sc, "control transfer failed: %s\n",
				usbd_errstr(error));

			UBT_STAT_OERROR(sc);
			goto send_next;
		}

		/* transfer cancelled */
		break;
	}
} /* ubt_ctrl_write_callback */
示例#25
0
文件: ng_ubt.c 项目: 2asoft/freebsd
static void
ubt_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ubt_softc	*sc = usbd_xfer_softc(xfer);
	struct mbuf		*m;
	ng_hci_acldata_pkt_t	*hdr;
	struct usb_page_cache	*pc;
	int len;
	int actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	m = NULL;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		/* Allocate new mbuf */
		MGETHDR(m, M_NOWAIT, MT_DATA);
		if (m == NULL) {
			UBT_STAT_IERROR(sc);
			goto submit_next;
		}

		if (!(MCLGET(m, M_NOWAIT))) {
			UBT_STAT_IERROR(sc);
			goto submit_next;
		}

		/* Add HCI packet type */
		*mtod(m, uint8_t *)= NG_HCI_ACL_DATA_PKT;
		m->m_pkthdr.len = m->m_len = 1;

		if (actlen > MCLBYTES - 1)
			actlen = MCLBYTES - 1;

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_out(pc, 0, mtod(m, uint8_t *) + 1, actlen);
		m->m_pkthdr.len += actlen;
		m->m_len += actlen;

		UBT_INFO(sc, "got %d bytes from bulk-in pipe\n",
			actlen);

		/* Validate packet and send it up the stack */
		if (m->m_pkthdr.len < (int)sizeof(*hdr)) {
			UBT_INFO(sc, "HCI ACL packet is too short\n");

			UBT_STAT_IERROR(sc);
			goto submit_next;
		}

		hdr = mtod(m, ng_hci_acldata_pkt_t *);
		len = le16toh(hdr->length);
		if (len != (int)(m->m_pkthdr.len - sizeof(*hdr))) {
			UBT_ERR(sc, "Invalid ACL packet size, length=%d, " \
				"pktlen=%d\n", len, m->m_pkthdr.len);

			UBT_STAT_IERROR(sc);
			goto submit_next;
		}

		UBT_INFO(sc, "got complete ACL data packet, pktlen=%d, " \
			"length=%d\n", m->m_pkthdr.len, len);

		UBT_STAT_PCKTS_RECV(sc);
		UBT_STAT_BYTES_RECV(sc, m->m_pkthdr.len);

		ubt_fwd_mbuf_up(sc, &m);
		/* m == NULL at this point */
		/* FALLTHOUGH */

	case USB_ST_SETUP:
submit_next:
		NG_FREE_M(m); /* checks for m != NULL */

		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
		usbd_transfer_submit(xfer);
		break;

	default: /* Error */
		if (error != USB_ERR_CANCELLED) {
			UBT_WARN(sc, "bulk-in transfer failed: %s\n",
				usbd_errstr(error));

			/* Try to clear stall first */
			usbd_xfer_set_stall(xfer);
			goto submit_next;
		}
			/* transfer cancelled */
		break;
	}
} /* ubt_bulk_read_callback */
示例#26
0
static uint8_t
cdce_ncm_fill_tx_frames(struct usb_xfer *xfer, uint8_t index)
{
	struct cdce_softc *sc = usbd_xfer_softc(xfer);
	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
	struct usb_page_cache *pc = usbd_xfer_get_frame(xfer, index);
	struct mbuf *m;
	uint32_t rem;
	uint32_t offset;
	uint32_t last_offset;
	uint16_t n;
	uint8_t retval;

	usbd_xfer_set_frame_offset(xfer, index * CDCE_NCM_TX_MAXLEN, index);

	offset = sizeof(sc->sc_ncm.hdr) +
	    sizeof(sc->sc_ncm.dpt) + sizeof(sc->sc_ncm.dp);

	/* Store last valid offset before alignment */
	last_offset = offset;

	/* Align offset */
	offset = CDCE_NCM_ALIGN(sc->sc_ncm.tx_remainder,
	    offset, sc->sc_ncm.tx_modulus);

	/* Zero pad */
	cdce_ncm_tx_zero(pc, last_offset, offset);

	/* buffer full */
	retval = 2;

	for (n = 0; n != sc->sc_ncm.tx_nframe; n++) {

		/* check if end of transmit buffer is reached */

		if (offset >= sc->sc_ncm.tx_max)
			break;

		/* compute maximum buffer size */

		rem = sc->sc_ncm.tx_max - offset;

		IFQ_DRV_DEQUEUE(&(ifp->if_snd), m);

		if (m == NULL) {
			/* buffer not full */
			retval = 1;
			break;
		}

		if (m->m_pkthdr.len > rem) {
			if (n == 0) {
				/* The frame won't fit in our buffer */
				DPRINTFN(1, "Frame too big to be transmitted!\n");
				m_freem(m);
				ifp->if_oerrors++;
				n--;
				continue;
			}
			/* Wait till next buffer becomes ready */
			IFQ_DRV_PREPEND(&(ifp->if_snd), m);
			break;
		}
		usbd_m_copy_in(pc, offset, m, 0, m->m_pkthdr.len);

		USETW(sc->sc_ncm.dp[n].wFrameLength, m->m_pkthdr.len);
		USETW(sc->sc_ncm.dp[n].wFrameIndex, offset);

		/* Update offset */
		offset += m->m_pkthdr.len;

		/* Store last valid offset before alignment */
		last_offset = offset;

		/* Align offset */
		offset = CDCE_NCM_ALIGN(sc->sc_ncm.tx_remainder,
		    offset, sc->sc_ncm.tx_modulus);

		/* Zero pad */
		cdce_ncm_tx_zero(pc, last_offset, offset);

		/*
		 * If there's a BPF listener, bounce a copy
		 * of this frame to him:
		 */
		BPF_MTAP(ifp, m);

		/* Free mbuf */

		m_freem(m);

		/* Pre-increment interface counter */

		ifp->if_opackets++;
	}

	if (n == 0)
		return (0);

	rem = (sizeof(sc->sc_ncm.dpt) + (4 * n) + 4);

	USETW(sc->sc_ncm.dpt.wLength, rem);

	/* zero the rest of the data pointer entries */
	for (; n != CDCE_NCM_SUBFRAMES_MAX; n++) {
		USETW(sc->sc_ncm.dp[n].wFrameLength, 0);
		USETW(sc->sc_ncm.dp[n].wFrameIndex, 0);
	}

	offset = last_offset;

	/* Align offset */
	offset = CDCE_NCM_ALIGN(0, offset, CDCE_NCM_TX_MINLEN);

	/* Optimise, save bandwidth and force short termination */
	if (offset >= sc->sc_ncm.tx_max)
		offset = sc->sc_ncm.tx_max;
	else
		offset ++;

	/* Zero pad */
	cdce_ncm_tx_zero(pc, last_offset, offset);

	/* set frame length */
	usbd_xfer_set_frame_len(xfer, index, offset);

	/* Fill out 16-bit header */
	sc->sc_ncm.hdr.dwSignature[0] = 'N';
	sc->sc_ncm.hdr.dwSignature[1] = 'C';
	sc->sc_ncm.hdr.dwSignature[2] = 'M';
	sc->sc_ncm.hdr.dwSignature[3] = 'H';
	USETW(sc->sc_ncm.hdr.wHeaderLength, sizeof(sc->sc_ncm.hdr));
	USETW(sc->sc_ncm.hdr.wBlockLength, offset);
	USETW(sc->sc_ncm.hdr.wSequence, sc->sc_ncm.tx_seq);
	USETW(sc->sc_ncm.hdr.wDptIndex, sizeof(sc->sc_ncm.hdr));

	sc->sc_ncm.tx_seq++;

	/* Fill out 16-bit frame table header */
	sc->sc_ncm.dpt.dwSignature[0] = 'N';
	sc->sc_ncm.dpt.dwSignature[1] = 'C';
	sc->sc_ncm.dpt.dwSignature[2] = 'M';
	sc->sc_ncm.dpt.dwSignature[3] = '0';
	USETW(sc->sc_ncm.dpt.wNextNdpIndex, 0);		/* reserved */

	usbd_copy_in(pc, 0, &(sc->sc_ncm.hdr), sizeof(sc->sc_ncm.hdr));
	usbd_copy_in(pc, sizeof(sc->sc_ncm.hdr), &(sc->sc_ncm.dpt),
	    sizeof(sc->sc_ncm.dpt));
	usbd_copy_in(pc, sizeof(sc->sc_ncm.hdr) + sizeof(sc->sc_ncm.dpt),
	    &(sc->sc_ncm.dp), sizeof(sc->sc_ncm.dp));
	return (retval);
}
示例#27
0
static void
usie_if_tx_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct usie_softc *sc = usbd_xfer_softc(xfer);
	struct usb_page_cache *pc;
	struct ifnet *ifp = sc->sc_ifp;
	struct mbuf *m;
	uint16_t size;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		DPRINTFN(11, "transfer complete\n");
		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
		ifp->if_opackets++;

		/* fall though */
	case USB_ST_SETUP:
tr_setup:

		if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
			break;

		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
		if (m == NULL)
			break;

		if (m->m_pkthdr.len > (MCLBYTES - ETHER_HDR_LEN +
		    ETHER_CRC_LEN - sizeof(sc->sc_txd))) {
			DPRINTF("packet len is too big: %d\n",
			    m->m_pkthdr.len);
			break;
		}
		pc = usbd_xfer_get_frame(xfer, 0);

		sc->sc_txd.hip.len = htobe16(m->m_pkthdr.len +
		    ETHER_HDR_LEN + ETHER_CRC_LEN);
		size = sizeof(sc->sc_txd);

		usbd_copy_in(pc, 0, &sc->sc_txd, size);
		usbd_m_copy_in(pc, size, m, 0, m->m_pkthdr.len);
		usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len +
		    size + ETHER_CRC_LEN);

		BPF_MTAP(ifp, m);

		m_freem(m);

		usbd_transfer_submit(xfer);
		break;

	default:			/* Error */
		DPRINTF("USB transfer error, %s\n",
		    usbd_errstr(error));
		ifp->if_oerrors++;

		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			ifp->if_ierrors++;
			goto tr_setup;
		}
		break;
	}
}
示例#28
0
static void
ipheth_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ipheth_softc *sc = usbd_xfer_softc(xfer);
	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
	struct usb_page_cache *pc;
	struct mbuf *m;
	uint8_t x;
	int actlen;
	int aframes;

	usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL);

	DPRINTFN(1, "\n");

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		DPRINTFN(11, "transfer complete: %u bytes in %u frames\n",
		    actlen, aframes);

		ifp->if_opackets++;

		/* free all previous TX buffers */
		ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);

		/* FALLTHROUGH */
	case USB_ST_SETUP:
tr_setup:
		for (x = 0; x != IPHETH_TX_FRAMES_MAX; x++) {

			IFQ_DRV_DEQUEUE(&ifp->if_snd, m);

			if (m == NULL)
				break;

			usbd_xfer_set_frame_offset(xfer,
			    x * IPHETH_BUF_SIZE, x);

			pc = usbd_xfer_get_frame(xfer, x);

			sc->sc_tx_buf[x] = m;

			if (m->m_pkthdr.len > IPHETH_BUF_SIZE)
				m->m_pkthdr.len = IPHETH_BUF_SIZE;

			usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);

			usbd_xfer_set_frame_len(xfer, x, IPHETH_BUF_SIZE);

			if (IPHETH_BUF_SIZE != m->m_pkthdr.len) {
				usbd_frame_zero(pc, m->m_pkthdr.len,
					IPHETH_BUF_SIZE - m->m_pkthdr.len);
			}

			/*
			 * If there's a BPF listener, bounce a copy of
			 * this frame to him:
			 */
			BPF_MTAP(ifp, m);
		}
		if (x != 0) {
			usbd_xfer_set_frames(xfer, x);

			usbd_transfer_submit(xfer);
		}
		break;

	default:			/* Error */
		DPRINTFN(11, "transfer error, %s\n",
		    usbd_errstr(error));

		/* free all previous TX buffers */
		ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);

		/* count output errors */
		ifp->if_oerrors++;

		if (error != USB_ERR_CANCELLED) {
			/* try to clear stall first */
			usbd_xfer_set_stall(xfer);
			goto tr_setup;
		}
		break;
	}
}
示例#29
0
文件: ng_ubt.c 项目: 2asoft/freebsd
static void
ubt_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
	struct ubt_softc	*sc = usbd_xfer_softc(xfer);
	struct mbuf		*m;
	struct usb_page_cache	*pc;
	int			actlen;

	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		UBT_INFO(sc, "sent %d bytes to bulk-out pipe\n", actlen);
		UBT_STAT_BYTES_SENT(sc, actlen);
		UBT_STAT_PCKTS_SENT(sc);
		/* FALLTHROUGH */

	case USB_ST_SETUP:
send_next:
		/* Get next mbuf, if any */
		UBT_NG_LOCK(sc);
		NG_BT_MBUFQ_DEQUEUE(&sc->sc_aclq, m);
		UBT_NG_UNLOCK(sc);

		if (m == NULL) {
			UBT_INFO(sc, "ACL data queue is empty\n");
			break; /* transfer completed */
		}

		/*
		 * Copy ACL data frame back to a linear USB transfer buffer
		 * and schedule transfer
		 */

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
		usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);

		UBT_INFO(sc, "bulk-out transfer has been started, len=%d\n",
			m->m_pkthdr.len);

		NG_FREE_M(m);

		usbd_transfer_submit(xfer);
		break;

	default: /* Error */
		if (error != USB_ERR_CANCELLED) {
			UBT_WARN(sc, "bulk-out transfer failed: %s\n",
				usbd_errstr(error));

			UBT_STAT_OERROR(sc);

			/* try to clear stall first */
			usbd_xfer_set_stall(xfer);
			goto send_next;
		}
			/* transfer cancelled */
		break;
	}
} /* ubt_bulk_write_callback */
示例#30
0
static void
usbd_ctrl_callback(struct usb_xfer *xfer, usb_error_t error)
{
	irp *ip;
	struct ndis_softc *sc = usbd_xfer_softc(xfer);
	struct ndisusb_ep *ne = usbd_xfer_get_priv(xfer);
	struct ndisusb_xfer *nx;
	uint8_t irql;
	union usbd_urb *urb;
	struct usbd_urb_vendor_or_class_request *vcreq;
	struct usb_page_cache *pc;
	uint8_t type = 0;
	struct usb_device_request req;
	int len;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		nx = usbd_aq_getfirst(sc, ne);
		if (nx == NULL)
			return;

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		vcreq = &urb->uu_vcreq;

		if (vcreq->uvc_trans_flags & USBD_TRANSFER_DIRECTION_IN) {
			pc = usbd_xfer_get_frame(xfer, 1);
			len = usbd_xfer_frame_len(xfer, 1);
			usbd_copy_out(pc, 0, vcreq->uvc_trans_buf, len);
			nx->nx_urbactlen += len;
		}

		usbd_xfer_complete(sc, ne, nx, USB_ERR_NORMAL_COMPLETION);
		/* fall through */
	case USB_ST_SETUP:
next:
		/* get next transfer */
		KeAcquireSpinLock(&ne->ne_lock, &irql);
		if (IsListEmpty(&ne->ne_pending)) {
			KeReleaseSpinLock(&ne->ne_lock, irql);
			return;
		}
		nx = CONTAINING_RECORD(ne->ne_pending.nle_flink,
		    struct ndisusb_xfer, nx_next);
		RemoveEntryList(&nx->nx_next);
		/* add a entry to the active queue's tail.  */
		InsertTailList((&ne->ne_active), (&nx->nx_next));
		KeReleaseSpinLock(&ne->ne_lock, irql);

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		vcreq = &urb->uu_vcreq;

		switch (urb->uu_hdr.uuh_func) {
		case URB_FUNCTION_CLASS_DEVICE:
			type = UT_CLASS | UT_DEVICE;
			break;
		case URB_FUNCTION_CLASS_INTERFACE:
			type = UT_CLASS | UT_INTERFACE;
			break;
		case URB_FUNCTION_CLASS_OTHER:
			type = UT_CLASS | UT_OTHER;
			break;
		case URB_FUNCTION_CLASS_ENDPOINT:
			type = UT_CLASS | UT_ENDPOINT;
			break;
		case URB_FUNCTION_VENDOR_DEVICE:
			type = UT_VENDOR | UT_DEVICE;
			break;
		case URB_FUNCTION_VENDOR_INTERFACE:
			type = UT_VENDOR | UT_INTERFACE;
			break;
		case URB_FUNCTION_VENDOR_OTHER:
			type = UT_VENDOR | UT_OTHER;
			break;
		case URB_FUNCTION_VENDOR_ENDPOINT:
			type = UT_VENDOR | UT_ENDPOINT;
			break;
		default:
			/* never reached.  */
			break;
		}

		type |= (vcreq->uvc_trans_flags & USBD_TRANSFER_DIRECTION_IN) ?
		    UT_READ : UT_WRITE;
		type |= vcreq->uvc_reserved1;

		req.bmRequestType = type;
		req.bRequest = vcreq->uvc_req;
		USETW(req.wIndex, vcreq->uvc_idx);
		USETW(req.wValue, vcreq->uvc_value);
		USETW(req.wLength, vcreq->uvc_trans_buflen);

		nx->nx_urbbuf		= vcreq->uvc_trans_buf;
		nx->nx_urblen		= vcreq->uvc_trans_buflen;
		nx->nx_urbactlen	= 0;

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_in(pc, 0, &req, sizeof(req));
		usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
		usbd_xfer_set_frames(xfer, 1);
		if (vcreq->uvc_trans_flags & USBD_TRANSFER_DIRECTION_IN) {
			if (vcreq->uvc_trans_buflen >= USBD_CTRL_READ_BUFFER_SP)
				device_printf(sc->ndis_dev,
				    "warning: not enough buffer space (%d).\n",
				    vcreq->uvc_trans_buflen);
			usbd_xfer_set_frame_len(xfer, 1,
			    MIN(usbd_xfer_max_len(xfer),
				    vcreq->uvc_trans_buflen));
			usbd_xfer_set_frames(xfer, 2);
		} else {
			if (nx->nx_urblen > USBD_CTRL_WRITE_BUFFER_SP)
				device_printf(sc->ndis_dev,
				    "warning: not enough write buffer space"
				    " (%d).\n", nx->nx_urblen);
			/*
			 * XXX with my local tests there was no cases to require
			 * a extra buffer until now but it'd need to update in
			 * the future if it needs to be.
			 */
			if (nx->nx_urblen > 0) {
				pc = usbd_xfer_get_frame(xfer, 1);
				usbd_copy_in(pc, 0, nx->nx_urbbuf,
				    nx->nx_urblen);
				usbd_xfer_set_frame_len(xfer, 1, nx->nx_urblen);
				usbd_xfer_set_frames(xfer, 2);
			}
		}
		usbd_transfer_submit(xfer);
		break;
	default:
		nx = usbd_aq_getfirst(sc, ne);
		if (nx == NULL)
			return;
		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			device_printf(sc->ndis_dev, "usb xfer warning (%s)\n",
			    usbd_errstr(error));
		}
		usbd_xfer_complete(sc, ne, nx, error);
		if (error != USB_ERR_CANCELLED)
			goto next;
		break;
	}
}