2 /* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */
5 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/stdint.h>
21 #include <sys/stddef.h>
22 #include <sys/param.h>
23 #include <sys/queue.h>
24 #include <sys/types.h>
25 #include <sys/systm.h>
26 #include <sys/kernel.h>
28 #include <sys/linker_set.h>
29 #include <sys/module.h>
31 #include <sys/mutex.h>
32 #include <sys/condvar.h>
33 #include <sys/sysctl.h>
35 #include <sys/unistd.h>
36 #include <sys/callout.h>
37 #include <sys/malloc.h>
40 #include <dev/usb/usb.h>
41 #include <dev/usb/usbdi.h>
42 #include <dev/usb/usbdi_util.h>
45 #define USB_DEBUG_VAR umoscom_debug
46 #include <dev/usb/usb_debug.h>
47 #include <dev/usb/usb_process.h>
49 #include <dev/usb/serial/usb_serial.h>
52 static int umoscom_debug = 0;
54 SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW, 0, "USB umoscom");
55 SYSCTL_INT(_hw_usb_umoscom, OID_AUTO, debug, CTLFLAG_RW,
56 &umoscom_debug, 0, "Debug level");
59 #define UMOSCOM_BUFSIZE 1024 /* bytes */
61 #define UMOSCOM_CONFIG_INDEX 0
62 #define UMOSCOM_IFACE_INDEX 0
64 /* interrupt packet */
65 #define UMOSCOM_IIR_RLS 0x06
66 #define UMOSCOM_IIR_RDA 0x04
67 #define UMOSCOM_IIR_CTI 0x0c
68 #define UMOSCOM_IIR_THR 0x02
69 #define UMOSCOM_IIR_MS 0x00
72 #define UMOSCOM_READ 0x0d
73 #define UMOSCOM_WRITE 0x0e
74 #define UMOSCOM_UART_REG 0x0300
75 #define UMOSCOM_VEND_REG 0x0000
77 #define UMOSCOM_TXBUF 0x00 /* Write */
78 #define UMOSCOM_RXBUF 0x00 /* Read */
79 #define UMOSCOM_INT 0x01
80 #define UMOSCOM_FIFO 0x02 /* Write */
81 #define UMOSCOM_ISR 0x02 /* Read */
82 #define UMOSCOM_LCR 0x03
83 #define UMOSCOM_MCR 0x04
84 #define UMOSCOM_LSR 0x05
85 #define UMOSCOM_MSR 0x06
86 #define UMOSCOM_SCRATCH 0x07
87 #define UMOSCOM_DIV_LO 0x08
88 #define UMOSCOM_DIV_HI 0x09
89 #define UMOSCOM_EFR 0x0a
90 #define UMOSCOM_XON1 0x0b
91 #define UMOSCOM_XON2 0x0c
92 #define UMOSCOM_XOFF1 0x0d
93 #define UMOSCOM_XOFF2 0x0e
95 #define UMOSCOM_BAUDLO 0x00
96 #define UMOSCOM_BAUDHI 0x01
98 #define UMOSCOM_INT_RXEN 0x01
99 #define UMOSCOM_INT_TXEN 0x02
100 #define UMOSCOM_INT_RSEN 0x04
101 #define UMOSCOM_INT_MDMEM 0x08
102 #define UMOSCOM_INT_SLEEP 0x10
103 #define UMOSCOM_INT_XOFF 0x20
104 #define UMOSCOM_INT_RTS 0x40
106 #define UMOSCOM_FIFO_EN 0x01
107 #define UMOSCOM_FIFO_RXCLR 0x02
108 #define UMOSCOM_FIFO_TXCLR 0x04
109 #define UMOSCOM_FIFO_DMA_BLK 0x08
110 #define UMOSCOM_FIFO_TXLVL_MASK 0x30
111 #define UMOSCOM_FIFO_TXLVL_8 0x00
112 #define UMOSCOM_FIFO_TXLVL_16 0x10
113 #define UMOSCOM_FIFO_TXLVL_32 0x20
114 #define UMOSCOM_FIFO_TXLVL_56 0x30
115 #define UMOSCOM_FIFO_RXLVL_MASK 0xc0
116 #define UMOSCOM_FIFO_RXLVL_8 0x00
117 #define UMOSCOM_FIFO_RXLVL_16 0x40
118 #define UMOSCOM_FIFO_RXLVL_56 0x80
119 #define UMOSCOM_FIFO_RXLVL_80 0xc0
121 #define UMOSCOM_ISR_MDM 0x00
122 #define UMOSCOM_ISR_NONE 0x01
123 #define UMOSCOM_ISR_TX 0x02
124 #define UMOSCOM_ISR_RX 0x04
125 #define UMOSCOM_ISR_LINE 0x06
126 #define UMOSCOM_ISR_RXTIMEOUT 0x0c
127 #define UMOSCOM_ISR_RX_XOFF 0x10
128 #define UMOSCOM_ISR_RTSCTS 0x20
129 #define UMOSCOM_ISR_FIFOEN 0xc0
131 #define UMOSCOM_LCR_DBITS(x) ((x) - 5)
132 #define UMOSCOM_LCR_STOP_BITS_1 0x00
133 #define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */
134 #define UMOSCOM_LCR_PARITY_NONE 0x00
135 #define UMOSCOM_LCR_PARITY_ODD 0x08
136 #define UMOSCOM_LCR_PARITY_EVEN 0x18
137 #define UMOSCOM_LCR_BREAK 0x40
138 #define UMOSCOM_LCR_DIVLATCH_EN 0x80
140 #define UMOSCOM_MCR_DTR 0x01
141 #define UMOSCOM_MCR_RTS 0x02
142 #define UMOSCOM_MCR_LOOP 0x04
143 #define UMOSCOM_MCR_INTEN 0x08
144 #define UMOSCOM_MCR_LOOPBACK 0x10
145 #define UMOSCOM_MCR_XONANY 0x20
146 #define UMOSCOM_MCR_IRDA_EN 0x40
147 #define UMOSCOM_MCR_BAUD_DIV4 0x80
149 #define UMOSCOM_LSR_RXDATA 0x01
150 #define UMOSCOM_LSR_RXOVER 0x02
151 #define UMOSCOM_LSR_RXPAR_ERR 0x04
152 #define UMOSCOM_LSR_RXFRM_ERR 0x08
153 #define UMOSCOM_LSR_RXBREAK 0x10
154 #define UMOSCOM_LSR_TXEMPTY 0x20
155 #define UMOSCOM_LSR_TXALLEMPTY 0x40
156 #define UMOSCOM_LSR_TXFIFO_ERR 0x80
158 #define UMOSCOM_MSR_CTS_CHG 0x01
159 #define UMOSCOM_MSR_DSR_CHG 0x02
160 #define UMOSCOM_MSR_RI_CHG 0x04
161 #define UMOSCOM_MSR_CD_CHG 0x08
162 #define UMOSCOM_MSR_CTS 0x10
163 #define UMOSCOM_MSR_RTS 0x20
164 #define UMOSCOM_MSR_RI 0x40
165 #define UMOSCOM_MSR_CD 0x80
167 #define UMOSCOM_BAUD_REF 115200
176 struct umoscom_softc {
177 struct ucom_super_softc sc_super_ucom;
178 struct ucom_softc sc_ucom;
180 struct usb_xfer *sc_xfer[UMOSCOM_N_TRANSFER];
181 struct usb_device *sc_udev;
190 static device_probe_t umoscom_probe;
191 static device_attach_t umoscom_attach;
192 static device_detach_t umoscom_detach;
194 static usb_callback_t umoscom_write_callback;
195 static usb_callback_t umoscom_read_callback;
196 static usb_callback_t umoscom_intr_callback;
198 static void umoscom_cfg_open(struct ucom_softc *);
199 static void umoscom_cfg_close(struct ucom_softc *);
200 static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t);
201 static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t);
202 static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t);
203 static int umoscom_pre_param(struct ucom_softc *, struct termios *);
204 static void umoscom_cfg_param(struct ucom_softc *, struct termios *);
205 static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *,
207 static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t);
208 static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t);
209 static void umoscom_start_read(struct ucom_softc *);
210 static void umoscom_stop_read(struct ucom_softc *);
211 static void umoscom_start_write(struct ucom_softc *);
212 static void umoscom_stop_write(struct ucom_softc *);
213 static void umoscom_poll(struct ucom_softc *ucom);
215 static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = {
217 [UMOSCOM_BULK_DT_WR] = {
219 .endpoint = UE_ADDR_ANY,
220 .direction = UE_DIR_OUT,
221 .bufsize = UMOSCOM_BUFSIZE,
222 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
223 .callback = &umoscom_write_callback,
226 [UMOSCOM_BULK_DT_RD] = {
228 .endpoint = UE_ADDR_ANY,
229 .direction = UE_DIR_IN,
230 .bufsize = UMOSCOM_BUFSIZE,
231 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
232 .callback = &umoscom_read_callback,
235 [UMOSCOM_INTR_DT_RD] = {
236 .type = UE_INTERRUPT,
237 .endpoint = UE_ADDR_ANY,
238 .direction = UE_DIR_IN,
239 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
240 .bufsize = 0, /* use wMaxPacketSize */
241 .callback = &umoscom_intr_callback,
245 static const struct ucom_callback umoscom_callback = {
246 /* configuration callbacks */
247 .ucom_cfg_get_status = &umoscom_cfg_get_status,
248 .ucom_cfg_set_dtr = &umoscom_cfg_set_dtr,
249 .ucom_cfg_set_rts = &umoscom_cfg_set_rts,
250 .ucom_cfg_set_break = &umoscom_cfg_set_break,
251 .ucom_cfg_param = &umoscom_cfg_param,
252 .ucom_cfg_open = &umoscom_cfg_open,
253 .ucom_cfg_close = &umoscom_cfg_close,
255 /* other callbacks */
256 .ucom_pre_param = &umoscom_pre_param,
257 .ucom_start_read = &umoscom_start_read,
258 .ucom_stop_read = &umoscom_stop_read,
259 .ucom_start_write = &umoscom_start_write,
260 .ucom_stop_write = &umoscom_stop_write,
261 .ucom_poll = &umoscom_poll,
264 static device_method_t umoscom_methods[] = {
265 DEVMETHOD(device_probe, umoscom_probe),
266 DEVMETHOD(device_attach, umoscom_attach),
267 DEVMETHOD(device_detach, umoscom_detach),
271 static devclass_t umoscom_devclass;
273 static driver_t umoscom_driver = {
275 .methods = umoscom_methods,
276 .size = sizeof(struct umoscom_softc),
279 DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0);
280 MODULE_DEPEND(umoscom, ucom, 1, 1, 1);
281 MODULE_DEPEND(umoscom, usb, 1, 1, 1);
282 MODULE_VERSION(umoscom, 1);
284 static const struct usb_device_id umoscom_devs[] = {
285 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)}
289 umoscom_probe(device_t dev)
291 struct usb_attach_arg *uaa = device_get_ivars(dev);
293 if (uaa->usb_mode != USB_MODE_HOST) {
296 if (uaa->info.bConfigIndex != UMOSCOM_CONFIG_INDEX) {
299 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) {
302 return (usbd_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa));
306 umoscom_attach(device_t dev)
308 struct usb_attach_arg *uaa = device_get_ivars(dev);
309 struct umoscom_softc *sc = device_get_softc(dev);
313 sc->sc_udev = uaa->device;
314 sc->sc_mcr = 0x08; /* enable interrupts */
316 /* XXX the device doesn't provide any ID string, so set a static one */
317 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter");
318 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n");
320 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF);
322 iface_index = UMOSCOM_IFACE_INDEX;
323 error = usbd_transfer_setup(uaa->device, &iface_index,
324 sc->sc_xfer, umoscom_config_data,
325 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx);
330 /* clear stall at first run */
331 mtx_lock(&sc->sc_mtx);
332 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
333 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
334 mtx_unlock(&sc->sc_mtx);
336 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
337 &umoscom_callback, &sc->sc_mtx);
341 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
346 device_printf(dev, "attach error: %s\n", usbd_errstr(error));
352 umoscom_detach(device_t dev)
354 struct umoscom_softc *sc = device_get_softc(dev);
356 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
357 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER);
358 mtx_destroy(&sc->sc_mtx);
364 umoscom_cfg_open(struct ucom_softc *ucom)
366 struct umoscom_softc *sc = ucom->sc_parent;
370 /* Purge FIFOs or odd things happen */
371 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG);
374 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN |
375 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR |
376 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK |
379 /* Enable Interrupt Registers */
380 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG);
383 umoscom_cfg_write(sc, 0x01, 0x08);
386 umoscom_cfg_write(sc, 0x00, 0x02);
390 umoscom_cfg_close(struct ucom_softc *ucom)
396 umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
398 struct umoscom_softc *sc = ucom->sc_parent;
403 val |= UMOSCOM_LCR_BREAK;
405 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG);
409 umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
411 struct umoscom_softc *sc = ucom->sc_parent;
414 sc->sc_mcr |= UMOSCOM_MCR_DTR;
416 sc->sc_mcr &= ~UMOSCOM_MCR_DTR;
418 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
422 umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
424 struct umoscom_softc *sc = ucom->sc_parent;
427 sc->sc_mcr |= UMOSCOM_MCR_RTS;
429 sc->sc_mcr &= ~UMOSCOM_MCR_RTS;
431 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
435 umoscom_pre_param(struct ucom_softc *ucom, struct termios *t)
437 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200))
444 umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t)
446 struct umoscom_softc *sc = ucom->sc_parent;
449 DPRINTF("speed=%d\n", t->c_ospeed);
451 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed);
454 DPRINTF("invalid baud rate!\n");
457 umoscom_cfg_write(sc, UMOSCOM_LCR,
458 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG);
460 umoscom_cfg_write(sc, UMOSCOM_BAUDLO,
461 (data & 0xFF) | UMOSCOM_UART_REG);
463 umoscom_cfg_write(sc, UMOSCOM_BAUDHI,
464 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG);
466 if (t->c_cflag & CSTOPB)
467 data = UMOSCOM_LCR_STOP_BITS_2;
469 data = UMOSCOM_LCR_STOP_BITS_1;
471 if (t->c_cflag & PARENB) {
472 if (t->c_cflag & PARODD)
473 data |= UMOSCOM_LCR_PARITY_ODD;
475 data |= UMOSCOM_LCR_PARITY_EVEN;
477 data |= UMOSCOM_LCR_PARITY_NONE;
479 switch (t->c_cflag & CSIZE) {
481 data |= UMOSCOM_LCR_DBITS(5);
484 data |= UMOSCOM_LCR_DBITS(6);
487 data |= UMOSCOM_LCR_DBITS(7);
490 data |= UMOSCOM_LCR_DBITS(8);
495 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG);
499 umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr)
501 struct umoscom_softc *sc = ucom->sc_parent;
507 /* read status registers */
509 lsr = umoscom_cfg_read(sc, UMOSCOM_LSR);
510 msr = umoscom_cfg_read(sc, UMOSCOM_MSR);
514 if (msr & UMOSCOM_MSR_CTS)
517 if (msr & UMOSCOM_MSR_CD)
520 if (msr & UMOSCOM_MSR_RI)
523 if (msr & UMOSCOM_MSR_RTS)
528 umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val)
530 struct usb_device_request req;
532 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
533 req.bRequest = UMOSCOM_WRITE;
534 USETW(req.wValue, val);
535 USETW(req.wIndex, reg);
536 USETW(req.wLength, 0);
538 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
539 &req, NULL, 0, 1000);
543 umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg)
545 struct usb_device_request req;
548 req.bmRequestType = UT_READ_VENDOR_DEVICE;
549 req.bRequest = UMOSCOM_READ;
550 USETW(req.wValue, 0);
551 USETW(req.wIndex, reg);
552 USETW(req.wLength, 1);
554 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
555 &req, &val, 0, 1000);
557 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val);
563 umoscom_start_read(struct ucom_softc *ucom)
565 struct umoscom_softc *sc = ucom->sc_parent;
568 /* start interrupt endpoint */
569 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
571 /* start read endpoint */
572 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
576 umoscom_stop_read(struct ucom_softc *ucom)
578 struct umoscom_softc *sc = ucom->sc_parent;
580 /* stop interrupt transfer */
581 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
583 /* stop read endpoint */
584 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
588 umoscom_start_write(struct ucom_softc *ucom)
590 struct umoscom_softc *sc = ucom->sc_parent;
592 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
596 umoscom_stop_write(struct ucom_softc *ucom)
598 struct umoscom_softc *sc = ucom->sc_parent;
600 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
604 umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error)
606 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
607 struct usb_page_cache *pc;
610 switch (USB_GET_STATE(xfer)) {
612 case USB_ST_TRANSFERRED:
616 pc = usbd_xfer_get_frame(xfer, 0);
617 if (ucom_get_data(&sc->sc_ucom, pc, 0,
618 UMOSCOM_BUFSIZE, &actlen)) {
620 usbd_xfer_set_frame_len(xfer, 0, actlen);
621 usbd_transfer_submit(xfer);
626 if (error != USB_ERR_CANCELLED) {
627 DPRINTFN(0, "transfer failed\n");
628 /* try to clear stall first */
629 usbd_xfer_set_stall(xfer);
637 umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error)
639 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
640 struct usb_page_cache *pc;
643 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
645 switch (USB_GET_STATE(xfer)) {
646 case USB_ST_TRANSFERRED:
647 DPRINTF("got %d bytes\n", actlen);
648 pc = usbd_xfer_get_frame(xfer, 0);
649 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
655 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
656 usbd_transfer_submit(xfer);
660 if (error != USB_ERR_CANCELLED) {
661 DPRINTFN(0, "transfer failed\n");
662 /* try to clear stall first */
663 usbd_xfer_set_stall(xfer);
671 umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
673 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
676 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
678 switch (USB_GET_STATE(xfer)) {
679 case USB_ST_TRANSFERRED:
681 DPRINTF("too short message\n");
684 ucom_status_change(&sc->sc_ucom);
688 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
689 usbd_transfer_submit(xfer);
693 if (error != USB_ERR_CANCELLED) {
694 DPRINTFN(0, "transfer failed\n");
695 /* try to clear stall first */
696 usbd_xfer_set_stall(xfer);
704 umoscom_poll(struct ucom_softc *ucom)
706 struct umoscom_softc *sc = ucom->sc_parent;
707 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER);