1 /* $OpenBSD: umodem.c,v 1.70 2024/05/23 03:21:09 jsg Exp $ */
2 /* $NetBSD: umodem.c,v 1.45 2002/09/23 05:51:23 simonb Exp $ */
3
4 /*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Lennart Augustsson (lennart@augustsson.net) at
10 * Carlstedt Research & Technology.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Comm Class spec: https://www.usb.org/sites/default/files/usbccs10.pdf
36 * https://www.usb.org/sites/default/files/CDC1.2_WMC1.1_012011.zip
37 */
38
39 /*
40 * TODO:
41 * - Add error recovery in various places; the big problem is what
42 * to do in a callback if there is an error.
43 * - Implement a Call Device for modems without multiplexed commands.
44 *
45 */
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/tty.h>
50 #include <sys/device.h>
51
52 #include <dev/usb/usb.h>
53 #include <dev/usb/usbcdc.h>
54
55 #include <dev/usb/usbdi.h>
56 #include <dev/usb/usbdevs.h>
57 #include <dev/usb/usb_quirks.h>
58
59 #include <dev/usb/ucomvar.h>
60
61 #ifdef UMODEM_DEBUG
62 #define DPRINTFN(n, x) do { if (umodemdebug > (n)) printf x; } while (0)
63 int umodemdebug = 0;
64 #else
65 #define DPRINTFN(n, x)
66 #endif
67 #define DPRINTF(x) DPRINTFN(0, x)
68
69 /*
70 * These are the maximum number of bytes transferred per frame.
71 * Buffers are this large to deal with high speed wireless devices.
72 * Capped at 1024 as ttymalloc() is limited to this amount.
73 */
74 #define UMODEMIBUFSIZE 1024
75 #define UMODEMOBUFSIZE 1024
76
77 struct umodem_softc {
78 struct device sc_dev; /* base device */
79
80 struct usbd_device *sc_udev; /* USB device */
81
82 int sc_ctl_iface_no;
83 struct usbd_interface *sc_ctl_iface; /* control interface */
84 struct usbd_interface *sc_data_iface; /* data interface */
85
86 int sc_cm_cap; /* CM capabilities */
87 int sc_acm_cap; /* ACM capabilities */
88
89 int sc_cm_over_data;
90
91 struct usb_cdc_line_state sc_line_state;/* current line state */
92 u_char sc_dtr; /* current DTR state */
93 u_char sc_rts; /* current RTS state */
94
95 struct device *sc_subdev; /* ucom device */
96
97 int sc_ctl_notify; /* Notification endpoint */
98 struct usbd_pipe *sc_notify_pipe; /* Notification pipe */
99 struct usb_cdc_notification sc_notify_buf; /* Notification structure */
100 u_char sc_lsr; /* Local status register */
101 u_char sc_msr; /* Modem status register */
102 };
103
104 usbd_status umodem_set_comm_feature(struct umodem_softc *sc,
105 int feature, int state);
106 usbd_status umodem_set_line_coding(struct umodem_softc *sc,
107 struct usb_cdc_line_state *state);
108
109 void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr);
110 void umodem_set(void *, int, int, int);
111 void umodem_dtr(struct umodem_softc *, int);
112 void umodem_rts(struct umodem_softc *, int);
113 void umodem_break(struct umodem_softc *, int);
114 void umodem_set_line_state(struct umodem_softc *);
115 int umodem_param(void *, int, struct termios *);
116 int umodem_open(void *, int portno);
117 void umodem_close(void *, int portno);
118 void umodem_intr(struct usbd_xfer *, void *, usbd_status);
119
120 const struct ucom_methods umodem_methods = {
121 umodem_get_status,
122 umodem_set,
123 umodem_param,
124 NULL,
125 umodem_open,
126 umodem_close,
127 NULL,
128 NULL,
129 };
130
131 int umodem_match(struct device *, void *, void *);
132 void umodem_attach(struct device *, struct device *, void *);
133 int umodem_detach(struct device *, int);
134
135 void umodem_get_caps(struct usb_attach_arg *, int, int *, int *, int *);
136
137 struct cfdriver umodem_cd = {
138 NULL, "umodem", DV_DULL
139 };
140
141 const struct cfattach umodem_ca = {
142 sizeof(struct umodem_softc), umodem_match, umodem_attach, umodem_detach
143 };
144
145 void
umodem_get_caps(struct usb_attach_arg * uaa,int ctl_iface_no,int * data_iface_idx,int * cm_cap,int * acm_cap)146 umodem_get_caps(struct usb_attach_arg *uaa, int ctl_iface_no,
147 int *data_iface_idx, int *cm_cap, int *acm_cap)
148 {
149 const usb_descriptor_t *desc;
150 const usb_interface_descriptor_t *id;
151 const struct usb_cdc_cm_descriptor *cmd;
152 const struct usb_cdc_acm_descriptor *acmd;
153 const struct usb_cdc_union_descriptor *uniond;
154 struct usbd_desc_iter iter;
155 int current_iface_no = -1;
156 int data_iface_no = -1;
157 int i;
158
159 *data_iface_idx = -1;
160 *cm_cap = *acm_cap = 0;
161 usbd_desc_iter_init(uaa->device, &iter);
162 desc = usbd_desc_iter_next(&iter);
163 while (desc) {
164 if (desc->bDescriptorType == UDESC_INTERFACE) {
165 id = (usb_interface_descriptor_t *)desc;
166 current_iface_no = id->bInterfaceNumber;
167 if (current_iface_no != ctl_iface_no &&
168 id->bInterfaceClass == UICLASS_CDC_DATA &&
169 id->bInterfaceSubClass == UISUBCLASS_DATA &&
170 data_iface_no == -1)
171 data_iface_no = current_iface_no;
172 }
173 if (current_iface_no == ctl_iface_no &&
174 desc->bDescriptorType == UDESC_CS_INTERFACE) {
175 switch(desc->bDescriptorSubtype) {
176 case UDESCSUB_CDC_CM:
177 cmd = (struct usb_cdc_cm_descriptor *)desc;
178 *cm_cap = cmd->bmCapabilities;
179 data_iface_no = cmd->bDataInterface;
180 break;
181 case UDESCSUB_CDC_ACM:
182 acmd = (struct usb_cdc_acm_descriptor *)desc;
183 *acm_cap = acmd->bmCapabilities;
184 break;
185 case UDESCSUB_CDC_UNION:
186 uniond =
187 (struct usb_cdc_union_descriptor *)desc;
188 data_iface_no = uniond->bSlaveInterface[0];
189 break;
190 }
191 }
192 desc = usbd_desc_iter_next(&iter);
193 }
194
195 /*
196 * If we got a data interface number, make sure the corresponding
197 * interface exists and is not already claimed.
198 */
199 if (data_iface_no != -1) {
200 for (i = 0; i < uaa->nifaces; i++) {
201 id = usbd_get_interface_descriptor(uaa->ifaces[i]);
202
203 if (id == NULL)
204 continue;
205
206 if (id->bInterfaceNumber == data_iface_no) {
207 if (!usbd_iface_claimed(uaa->device, i))
208 *data_iface_idx = i;
209 break;
210 }
211 }
212 }
213 }
214
215 int
umodem_match(struct device * parent,void * match,void * aux)216 umodem_match(struct device *parent, void *match, void *aux)
217 {
218 struct usb_attach_arg *uaa = aux;
219 usb_interface_descriptor_t *id;
220 usb_device_descriptor_t *dd;
221 int data_iface_idx, cm_cap, acm_cap, ret = UMATCH_NONE;
222
223 if (uaa->iface == NULL)
224 return (ret);
225
226 id = usbd_get_interface_descriptor(uaa->iface);
227 dd = usbd_get_device_descriptor(uaa->device);
228 if (id == NULL || dd == NULL)
229 return (ret);
230
231 ret = UMATCH_NONE;
232
233 if (UGETW(dd->idVendor) == USB_VENDOR_KYOCERA &&
234 UGETW(dd->idProduct) == USB_PRODUCT_KYOCERA_AHK3001V &&
235 id->bInterfaceNumber == 0)
236 ret = UMATCH_VENDOR_PRODUCT;
237
238 if (ret == UMATCH_NONE &&
239 id->bInterfaceClass == UICLASS_CDC &&
240 id->bInterfaceSubClass == UISUBCLASS_ABSTRACT_CONTROL_MODEL &&
241 (id->bInterfaceProtocol == UIPROTO_CDC_AT ||
242 id->bInterfaceProtocol == UIPROTO_CDC_NOCLASS))
243 ret = UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO;
244
245 if (ret == UMATCH_NONE)
246 return (ret);
247
248 /* umodem doesn't support devices without a data iface */
249 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx,
250 &cm_cap, &acm_cap);
251 if (data_iface_idx == -1)
252 ret = UMATCH_NONE;
253
254 return (ret);
255 }
256
257 void
umodem_attach(struct device * parent,struct device * self,void * aux)258 umodem_attach(struct device *parent, struct device *self, void *aux)
259 {
260 struct umodem_softc *sc = (struct umodem_softc *)self;
261 struct usb_attach_arg *uaa = aux;
262 struct usbd_device *dev = uaa->device;
263 usb_interface_descriptor_t *id;
264 usb_endpoint_descriptor_t *ed;
265 usbd_status err;
266 int data_iface_idx = -1;
267 int i;
268 struct ucom_attach_args uca;
269
270 sc->sc_udev = dev;
271 sc->sc_ctl_iface = uaa->iface;
272
273 id = usbd_get_interface_descriptor(sc->sc_ctl_iface);
274 //printf("%s: iclass %d/%d\n", sc->sc_dev.dv_xname,
275 // id->bInterfaceClass, id->bInterfaceSubClass);
276 sc->sc_ctl_iface_no = id->bInterfaceNumber;
277
278 /* Get the capabilities. */
279 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx,
280 &sc->sc_cm_cap, &sc->sc_acm_cap);
281
282 usbd_claim_iface(sc->sc_udev, data_iface_idx);
283 sc->sc_data_iface = uaa->ifaces[data_iface_idx];
284 id = usbd_get_interface_descriptor(sc->sc_data_iface);
285
286 printf("%s: data interface %d, has %sCM over data, has %sbreak\n",
287 sc->sc_dev.dv_xname, id->bInterfaceNumber,
288 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ",
289 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no ");
290
291 /*
292 * Find the bulk endpoints.
293 * Iterate over all endpoints in the data interface and take note.
294 */
295 uca.bulkin = uca.bulkout = -1;
296
297 for (i = 0; i < id->bNumEndpoints; i++) {
298 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i);
299 if (ed == NULL) {
300 printf("%s: no endpoint descriptor for %d\n",
301 sc->sc_dev.dv_xname, i);
302 goto bad;
303 }
304 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
305 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
306 uca.bulkin = ed->bEndpointAddress;
307 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
308 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
309 uca.bulkout = ed->bEndpointAddress;
310 }
311 }
312
313 if (uca.bulkin == -1) {
314 printf("%s: Could not find data bulk in\n",
315 sc->sc_dev.dv_xname);
316 goto bad;
317 }
318 if (uca.bulkout == -1) {
319 printf("%s: Could not find data bulk out\n",
320 sc->sc_dev.dv_xname);
321 goto bad;
322 }
323
324 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) {
325 sc->sc_cm_over_data = 1;
326 } else {
327 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) {
328 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE)
329 err = umodem_set_comm_feature(sc,
330 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED);
331 else
332 err = 0;
333 if (err) {
334 printf("%s: could not set data multiplex mode\n",
335 sc->sc_dev.dv_xname);
336 goto bad;
337 }
338 sc->sc_cm_over_data = 1;
339 }
340 }
341
342 /*
343 * The standard allows for notification messages (to indicate things
344 * like a modem hangup) to come in via an interrupt endpoint
345 * off of the control interface. Iterate over the endpoints on
346 * the control interface and see if there are any interrupt
347 * endpoints; if there are, then register it.
348 */
349
350 sc->sc_ctl_notify = -1;
351 sc->sc_notify_pipe = NULL;
352
353 id = usbd_get_interface_descriptor(sc->sc_ctl_iface);
354 for (i = 0; i < id->bNumEndpoints; i++) {
355 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i);
356 if (ed == NULL)
357 continue;
358
359 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
360 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
361 printf("%s: status change notification available\n",
362 sc->sc_dev.dv_xname);
363 sc->sc_ctl_notify = ed->bEndpointAddress;
364 }
365 }
366
367 sc->sc_dtr = -1;
368
369 uca.portno = UCOM_UNK_PORTNO;
370 /* bulkin, bulkout set above */
371 uca.ibufsize = UMODEMIBUFSIZE;
372 uca.obufsize = UMODEMOBUFSIZE;
373 uca.ibufsizepad = UMODEMIBUFSIZE;
374 uca.opkthdrlen = 0;
375 uca.device = sc->sc_udev;
376 uca.iface = sc->sc_data_iface;
377 uca.methods = &umodem_methods;
378 uca.arg = sc;
379 uca.info = NULL;
380
381 DPRINTF(("umodem_attach: sc=%p\n", sc));
382 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
383
384 return;
385
386 bad:
387 usbd_deactivate(sc->sc_udev);
388 }
389
390 int
umodem_open(void * addr,int portno)391 umodem_open(void *addr, int portno)
392 {
393 struct umodem_softc *sc = addr;
394 int err;
395
396 DPRINTF(("umodem_open: sc=%p\n", sc));
397
398 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) {
399 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify,
400 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc,
401 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf),
402 umodem_intr, USBD_DEFAULT_INTERVAL);
403
404 if (err) {
405 DPRINTF(("Failed to establish notify pipe: %s\n",
406 usbd_errstr(err)));
407 return EIO;
408 }
409 }
410
411 return 0;
412 }
413
414 void
umodem_close(void * addr,int portno)415 umodem_close(void *addr, int portno)
416 {
417 struct umodem_softc *sc = addr;
418 int err;
419
420 DPRINTF(("umodem_close: sc=%p\n", sc));
421
422 if (sc->sc_notify_pipe != NULL) {
423 err = usbd_close_pipe(sc->sc_notify_pipe);
424 if (err)
425 printf("%s: close notify pipe failed: %s\n",
426 sc->sc_dev.dv_xname, usbd_errstr(err));
427 sc->sc_notify_pipe = NULL;
428 }
429 }
430
431 void
umodem_intr(struct usbd_xfer * xfer,void * priv,usbd_status status)432 umodem_intr(struct usbd_xfer *xfer, void *priv, usbd_status status)
433 {
434 struct umodem_softc *sc = priv;
435 u_char mstatus;
436
437 if (usbd_is_dying(sc->sc_udev))
438 return;
439
440 if (status != USBD_NORMAL_COMPLETION) {
441 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
442 return;
443 DPRINTF(("%s: abnormal status: %s\n", sc->sc_dev.dv_xname,
444 usbd_errstr(status)));
445 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe);
446 return;
447 }
448
449 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) {
450 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n",
451 sc->sc_dev.dv_xname,
452 sc->sc_notify_buf.bmRequestType));
453 return;
454 }
455
456 switch (sc->sc_notify_buf.bNotification) {
457 case UCDC_N_SERIAL_STATE:
458 /*
459 * Set the serial state in ucom driver based on
460 * the bits from the notify message
461 */
462 if (UGETW(sc->sc_notify_buf.wLength) != 2) {
463 printf("%s: Invalid notification length! (%d)\n",
464 sc->sc_dev.dv_xname,
465 UGETW(sc->sc_notify_buf.wLength));
466 break;
467 }
468 DPRINTF(("%s: notify bytes = %02x%02x\n",
469 sc->sc_dev.dv_xname,
470 sc->sc_notify_buf.data[0],
471 sc->sc_notify_buf.data[1]));
472 /* Currently, lsr is always zero. */
473 sc->sc_lsr = sc->sc_msr = 0;
474 mstatus = sc->sc_notify_buf.data[0];
475
476 if (ISSET(mstatus, UCDC_N_SERIAL_RI))
477 sc->sc_msr |= UMSR_RI;
478 if (ISSET(mstatus, UCDC_N_SERIAL_DSR))
479 sc->sc_msr |= UMSR_DSR;
480 if (ISSET(mstatus, UCDC_N_SERIAL_DCD))
481 sc->sc_msr |= UMSR_DCD;
482 ucom_status_change((struct ucom_softc *)sc->sc_subdev);
483 break;
484 default:
485 DPRINTF(("%s: unknown notify message: %02x\n",
486 sc->sc_dev.dv_xname,
487 sc->sc_notify_buf.bNotification));
488 break;
489 }
490 }
491
492 void
umodem_get_status(void * addr,int portno,u_char * lsr,u_char * msr)493 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
494 {
495 struct umodem_softc *sc = addr;
496
497 DPRINTF(("umodem_get_status:\n"));
498
499 if (lsr != NULL)
500 *lsr = sc->sc_lsr;
501 if (msr != NULL)
502 *msr = sc->sc_msr;
503 }
504
505 int
umodem_param(void * addr,int portno,struct termios * t)506 umodem_param(void *addr, int portno, struct termios *t)
507 {
508 struct umodem_softc *sc = addr;
509 usbd_status err;
510 struct usb_cdc_line_state ls;
511
512 DPRINTF(("umodem_param: sc=%p\n", sc));
513
514 USETDW(ls.dwDTERate, t->c_ospeed);
515 if (ISSET(t->c_cflag, CSTOPB))
516 ls.bCharFormat = UCDC_STOP_BIT_2;
517 else
518 ls.bCharFormat = UCDC_STOP_BIT_1;
519 if (ISSET(t->c_cflag, PARENB)) {
520 if (ISSET(t->c_cflag, PARODD))
521 ls.bParityType = UCDC_PARITY_ODD;
522 else
523 ls.bParityType = UCDC_PARITY_EVEN;
524 } else
525 ls.bParityType = UCDC_PARITY_NONE;
526 switch (ISSET(t->c_cflag, CSIZE)) {
527 case CS5:
528 ls.bDataBits = 5;
529 break;
530 case CS6:
531 ls.bDataBits = 6;
532 break;
533 case CS7:
534 ls.bDataBits = 7;
535 break;
536 case CS8:
537 ls.bDataBits = 8;
538 break;
539 }
540
541 err = umodem_set_line_coding(sc, &ls);
542 if (err) {
543 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err)));
544 return (1);
545 }
546 return (0);
547 }
548
549 void
umodem_dtr(struct umodem_softc * sc,int onoff)550 umodem_dtr(struct umodem_softc *sc, int onoff)
551 {
552 DPRINTF(("umodem_dtr: onoff=%d\n", onoff));
553
554 if (sc->sc_dtr == onoff)
555 return;
556 sc->sc_dtr = onoff;
557
558 umodem_set_line_state(sc);
559 }
560
561 void
umodem_rts(struct umodem_softc * sc,int onoff)562 umodem_rts(struct umodem_softc *sc, int onoff)
563 {
564 DPRINTF(("umodem_rts: onoff=%d\n", onoff));
565
566 if (sc->sc_rts == onoff)
567 return;
568 sc->sc_rts = onoff;
569
570 umodem_set_line_state(sc);
571 }
572
573 void
umodem_set_line_state(struct umodem_softc * sc)574 umodem_set_line_state(struct umodem_softc *sc)
575 {
576 usb_device_request_t req;
577 int ls;
578
579 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) |
580 (sc->sc_rts ? UCDC_LINE_RTS : 0);
581 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
582 req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
583 USETW(req.wValue, ls);
584 USETW(req.wIndex, sc->sc_ctl_iface_no);
585 USETW(req.wLength, 0);
586
587 (void)usbd_do_request(sc->sc_udev, &req, 0);
588
589 }
590
591 void
umodem_break(struct umodem_softc * sc,int onoff)592 umodem_break(struct umodem_softc *sc, int onoff)
593 {
594 usb_device_request_t req;
595
596 DPRINTF(("umodem_break: onoff=%d\n", onoff));
597
598 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK))
599 return;
600
601 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
602 req.bRequest = UCDC_SEND_BREAK;
603 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
604 USETW(req.wIndex, sc->sc_ctl_iface_no);
605 USETW(req.wLength, 0);
606
607 (void)usbd_do_request(sc->sc_udev, &req, 0);
608 }
609
610 void
umodem_set(void * addr,int portno,int reg,int onoff)611 umodem_set(void *addr, int portno, int reg, int onoff)
612 {
613 struct umodem_softc *sc = addr;
614
615 switch (reg) {
616 case UCOM_SET_DTR:
617 umodem_dtr(sc, onoff);
618 break;
619 case UCOM_SET_RTS:
620 umodem_rts(sc, onoff);
621 break;
622 case UCOM_SET_BREAK:
623 umodem_break(sc, onoff);
624 break;
625 default:
626 break;
627 }
628 }
629
630 usbd_status
umodem_set_line_coding(struct umodem_softc * sc,struct usb_cdc_line_state * state)631 umodem_set_line_coding(struct umodem_softc *sc,
632 struct usb_cdc_line_state *state)
633 {
634 usb_device_request_t req;
635 usbd_status err;
636
637 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n",
638 UGETDW(state->dwDTERate), state->bCharFormat,
639 state->bParityType, state->bDataBits));
640
641 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) {
642 DPRINTF(("umodem_set_line_coding: already set\n"));
643 return (USBD_NORMAL_COMPLETION);
644 }
645
646 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
647 req.bRequest = UCDC_SET_LINE_CODING;
648 USETW(req.wValue, 0);
649 USETW(req.wIndex, sc->sc_ctl_iface_no);
650 USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
651
652 err = usbd_do_request(sc->sc_udev, &req, state);
653 if (err) {
654 DPRINTF(("umodem_set_line_coding: failed, err=%s\n",
655 usbd_errstr(err)));
656 return (err);
657 }
658
659 sc->sc_line_state = *state;
660
661 return (USBD_NORMAL_COMPLETION);
662 }
663
664 usbd_status
umodem_set_comm_feature(struct umodem_softc * sc,int feature,int state)665 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state)
666 {
667 usb_device_request_t req;
668 usbd_status err;
669 struct usb_cdc_abstract_state ast;
670
671 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature,
672 state));
673
674 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
675 req.bRequest = UCDC_SET_COMM_FEATURE;
676 USETW(req.wValue, feature);
677 USETW(req.wIndex, sc->sc_ctl_iface_no);
678 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH);
679 USETW(ast.wState, state);
680
681 err = usbd_do_request(sc->sc_udev, &req, &ast);
682 if (err) {
683 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n",
684 feature, usbd_errstr(err)));
685 return (err);
686 }
687
688 return (USBD_NORMAL_COMPLETION);
689 }
690
691 int
umodem_detach(struct device * self,int flags)692 umodem_detach(struct device *self, int flags)
693 {
694 struct umodem_softc *sc = (struct umodem_softc *)self;
695 int rv = 0;
696
697 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags));
698
699 if (sc->sc_notify_pipe != NULL) {
700 usbd_close_pipe(sc->sc_notify_pipe);
701 sc->sc_notify_pipe = NULL;
702 }
703
704 if (sc->sc_subdev != NULL)
705 rv = config_detach(sc->sc_subdev, flags);
706
707 return (rv);
708 }
709