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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
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/*-
* Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/usb/serial/ubsa.c 235000 2012-05-04 15:05:30Z hselasky $");
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA (ichiro@ichiro.org).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR ubsa_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/serial/usb_serial.h>
#ifdef USB_DEBUG
static int ubsa_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
&ubsa_debug, 0, "ubsa debug level");
#endif
#define UBSA_BSIZE 1024 /* bytes */
#define UBSA_CONFIG_INDEX 0
#define UBSA_IFACE_INDEX 0
#define UBSA_REG_BAUDRATE 0x00
#define UBSA_REG_STOP_BITS 0x01
#define UBSA_REG_DATA_BITS 0x02
#define UBSA_REG_PARITY 0x03
#define UBSA_REG_DTR 0x0A
#define UBSA_REG_RTS 0x0B
#define UBSA_REG_BREAK 0x0C
#define UBSA_REG_FLOW_CTRL 0x10
#define UBSA_PARITY_NONE 0x00
#define UBSA_PARITY_EVEN 0x01
#define UBSA_PARITY_ODD 0x02
#define UBSA_PARITY_MARK 0x03
#define UBSA_PARITY_SPACE 0x04
#define UBSA_FLOW_NONE 0x0000
#define UBSA_FLOW_OCTS 0x0001
#define UBSA_FLOW_ODSR 0x0002
#define UBSA_FLOW_IDSR 0x0004
#define UBSA_FLOW_IDTR 0x0008
#define UBSA_FLOW_IRTS 0x0010
#define UBSA_FLOW_ORTS 0x0020
#define UBSA_FLOW_UNKNOWN 0x0040
#define UBSA_FLOW_OXON 0x0080
#define UBSA_FLOW_IXON 0x0100
/* line status register */
#define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */
#define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */
#define UBSA_LSR_BI 0x10 /* Break detected */
#define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */
#define UBSA_LSR_PE 0x04 /* Parity error */
#define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */
#define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */
#define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */
/* modem status register */
/* All deltas are from the last read of the MSR. */
#define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */
#define UBSA_MSR_RI 0x40 /* Current Ring Indicator */
#define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */
#define UBSA_MSR_CTS 0x10 /* Current Clear to Send */
#define UBSA_MSR_DDCD 0x08 /* DCD has changed state */
#define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */
#define UBSA_MSR_DDSR 0x02 /* DSR has changed state */
#define UBSA_MSR_DCTS 0x01 /* CTS has changed state */
enum {
UBSA_BULK_DT_WR,
UBSA_BULK_DT_RD,
UBSA_INTR_DT_RD,
UBSA_N_TRANSFER,
};
struct ubsa_softc {
struct ucom_super_softc sc_super_ucom;
struct ucom_softc sc_ucom;
struct usb_xfer *sc_xfer[UBSA_N_TRANSFER];
struct usb_device *sc_udev;
struct mtx sc_mtx;
uint8_t sc_iface_no; /* interface number */
uint8_t sc_iface_index; /* interface index */
uint8_t sc_lsr; /* local status register */
uint8_t sc_msr; /* UBSA status register */
};
static device_probe_t ubsa_probe;
static device_attach_t ubsa_attach;
static device_detach_t ubsa_detach;
static usb_callback_t ubsa_write_callback;
static usb_callback_t ubsa_read_callback;
static usb_callback_t ubsa_intr_callback;
static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t);
static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t);
static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t);
static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t);
static int ubsa_pre_param(struct ucom_softc *, struct termios *);
static void ubsa_cfg_param(struct ucom_softc *, struct termios *);
static void ubsa_start_read(struct ucom_softc *);
static void ubsa_stop_read(struct ucom_softc *);
static void ubsa_start_write(struct ucom_softc *);
static void ubsa_stop_write(struct ucom_softc *);
static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *,
uint8_t *);
static void ubsa_poll(struct ucom_softc *ucom);
static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = {
[UBSA_BULK_DT_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = UBSA_BSIZE, /* bytes */
.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
.callback = &ubsa_write_callback,
},
[UBSA_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = UBSA_BSIZE, /* bytes */
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = &ubsa_read_callback,
},
[UBSA_INTR_DT_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.bufsize = 0, /* use wMaxPacketSize */
.callback = &ubsa_intr_callback,
},
};
static const struct ucom_callback ubsa_callback = {
.ucom_cfg_get_status = &ubsa_cfg_get_status,
.ucom_cfg_set_dtr = &ubsa_cfg_set_dtr,
.ucom_cfg_set_rts = &ubsa_cfg_set_rts,
.ucom_cfg_set_break = &ubsa_cfg_set_break,
.ucom_cfg_param = &ubsa_cfg_param,
.ucom_pre_param = &ubsa_pre_param,
.ucom_start_read = &ubsa_start_read,
.ucom_stop_read = &ubsa_stop_read,
.ucom_start_write = &ubsa_start_write,
.ucom_stop_write = &ubsa_stop_write,
.ucom_poll = &ubsa_poll,
};
static const STRUCT_USB_HOST_ID ubsa_devs[] = {
/* AnyData ADU-500A */
{USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)},
/* AnyData ADU-E100A/H */
{USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)},
/* Axesstel MV100H */
{USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)},
/* BELKIN F5U103 */
{USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)},
/* BELKIN F5U120 */
{USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)},
/* GoHubs GO-COM232 */
{USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)},
/* GoHubs GO-COM232 */
{USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)},
/* Peracom */
{USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)},
};
static device_method_t ubsa_methods[] = {
DEVMETHOD(device_probe, ubsa_probe),
DEVMETHOD(device_attach, ubsa_attach),
DEVMETHOD(device_detach, ubsa_detach),
{0, 0}
};
static devclass_t ubsa_devclass;
static driver_t ubsa_driver = {
.name = "ubsa",
.methods = ubsa_methods,
.size = sizeof(struct ubsa_softc),
};
DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0);
MODULE_DEPEND(ubsa, ucom, 1, 1, 1);
MODULE_DEPEND(ubsa, usb, 1, 1, 1);
MODULE_VERSION(ubsa, 1);
static int
ubsa_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
if (uaa->usb_mode != USB_MODE_HOST) {
return (ENXIO);
}
if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) {
return (ENXIO);
}
if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) {
return (ENXIO);
}
return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa));
}
static int
ubsa_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct ubsa_softc *sc = device_get_softc(dev);
int error;
DPRINTF("sc=%p\n", sc);
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF);
sc->sc_udev = uaa->device;
sc->sc_iface_no = uaa->info.bIfaceNum;
sc->sc_iface_index = UBSA_IFACE_INDEX;
error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
DPRINTF("could not allocate all pipes\n");
goto detach;
}
/* clear stall at first run */
mtx_lock(&sc->sc_mtx);
usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]);
usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]);
mtx_unlock(&sc->sc_mtx);
error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
&ubsa_callback, &sc->sc_mtx);
if (error) {
DPRINTF("ucom_attach failed\n");
goto detach;
}
ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
return (0);
detach:
ubsa_detach(dev);
return (ENXIO);
}
static int
ubsa_detach(device_t dev)
{
struct ubsa_softc *sc = device_get_softc(dev);
DPRINTF("sc=%p\n", sc);
ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value)
{
struct usb_device_request req;
usb_error_t err;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = index;
USETW(req.wValue, value);
req.wIndex[0] = sc->sc_iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, 0);
err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
if (err) {
DPRINTFN(0, "device request failed, err=%s "
"(ignored)\n", usbd_errstr(err));
}
}
static void
ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
{
struct ubsa_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0);
}
static void
ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
{
struct ubsa_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0);
}
static void
ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
{
struct ubsa_softc *sc = ucom->sc_parent;
DPRINTF("onoff = %d\n", onoff);
ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0);
}
static int
ubsa_pre_param(struct ucom_softc *ucom, struct termios *t)
{
DPRINTF("sc = %p\n", ucom->sc_parent);
switch (t->c_ospeed) {
case B0:
case B300:
case B600:
case B1200:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
case B230400:
break;
default:
return (EINVAL);
}
return (0);
}
static void
ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t)
{
struct ubsa_softc *sc = ucom->sc_parent;
uint16_t value = 0;
DPRINTF("sc = %p\n", sc);
switch (t->c_ospeed) {
case B0:
ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0);
ubsa_cfg_set_dtr(&sc->sc_ucom, 0);
ubsa_cfg_set_rts(&sc->sc_ucom, 0);
break;
case B300:
case B600:
case B1200:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
case B230400:
value = B230400 / t->c_ospeed;
ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value);
break;
default:
return;
}
if (t->c_cflag & PARENB)
value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
else
value = UBSA_PARITY_NONE;
ubsa_cfg_request(sc, UBSA_REG_PARITY, value);
switch (t->c_cflag & CSIZE) {
case CS5:
value = 0;
break;
case CS6:
value = 1;
break;
case CS7:
value = 2;
break;
default:
case CS8:
value = 3;
break;
}
ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value);
value = (t->c_cflag & CSTOPB) ? 1 : 0;
ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value);
value = 0;
if (t->c_cflag & CRTSCTS)
value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
if (t->c_iflag & (IXON | IXOFF))
value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value);
}
static void
ubsa_start_read(struct ucom_softc *ucom)
{
struct ubsa_softc *sc = ucom->sc_parent;
/* start interrupt endpoint */
usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]);
/* start read endpoint */
usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]);
}
static void
ubsa_stop_read(struct ucom_softc *ucom)
{
struct ubsa_softc *sc = ucom->sc_parent;
/* stop interrupt endpoint */
usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]);
/* stop read endpoint */
usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]);
}
static void
ubsa_start_write(struct ucom_softc *ucom)
{
struct ubsa_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]);
}
static void
ubsa_stop_write(struct ucom_softc *ucom)
{
struct ubsa_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]);
}
static void
ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
{
struct ubsa_softc *sc = ucom->sc_parent;
DPRINTF("\n");
*lsr = sc->sc_lsr;
*msr = sc->sc_msr;
}
static void
ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct ubsa_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint32_t actlen;
switch (USB_GET_STATE(xfer)) {
case USB_ST_SETUP:
case USB_ST_TRANSFERRED:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (ucom_get_data(&sc->sc_ucom, pc, 0,
UBSA_BSIZE, &actlen)) {
usbd_xfer_set_frame_len(xfer, 0, actlen);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct ubsa_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int 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);
ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct ubsa_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint8_t buf[4];
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen >= (int)sizeof(buf)) {
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, buf, sizeof(buf));
/*
* incidentally, Belkin adapter status bits match
* UART 16550 bits
*/
sc->sc_lsr = buf[2];
sc->sc_msr = buf[3];
DPRINTF("lsr = 0x%02x, msr = 0x%02x\n",
sc->sc_lsr, sc->sc_msr);
ucom_status_change(&sc->sc_ucom);
} else {
DPRINTF("ignoring short packet, %d bytes\n", actlen);
}
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
ubsa_poll(struct ucom_softc *ucom)
{
struct ubsa_softc *sc = ucom->sc_parent;
usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER);
}