1 /* $OpenBSD: umodem.c,v 1.63 2017/12/30 20:47:00 guenther 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: http://www.usb.org/developers/devclass_docs/usbccs10.pdf 36 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 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/kernel.h> 50 #include <sys/conf.h> 51 #include <sys/tty.h> 52 #include <sys/selinfo.h> 53 #include <sys/device.h> 54 #include <sys/poll.h> 55 56 #include <dev/usb/usb.h> 57 #include <dev/usb/usbcdc.h> 58 59 #include <dev/usb/usbdi.h> 60 #include <dev/usb/usbdevs.h> 61 #include <dev/usb/usb_quirks.h> 62 63 #include <dev/usb/ucomvar.h> 64 65 #ifdef UMODEM_DEBUG 66 #define DPRINTFN(n, x) do { if (umodemdebug > (n)) printf x; } while (0) 67 int umodemdebug = 0; 68 #else 69 #define DPRINTFN(n, x) 70 #endif 71 #define DPRINTF(x) DPRINTFN(0, x) 72 73 /* 74 * These are the maximum number of bytes transferred per frame. 75 * Buffers are this large to deal with high speed wireless devices. 76 * Capped at 1024 as ttymalloc() is limited to this amount. 77 */ 78 #define UMODEMIBUFSIZE 1024 79 #define UMODEMOBUFSIZE 1024 80 81 struct umodem_softc { 82 struct device sc_dev; /* base device */ 83 84 struct usbd_device *sc_udev; /* USB device */ 85 86 int sc_ctl_iface_no; 87 struct usbd_interface *sc_ctl_iface; /* control interface */ 88 struct usbd_interface *sc_data_iface; /* data interface */ 89 90 int sc_cm_cap; /* CM capabilities */ 91 int sc_acm_cap; /* ACM capabilities */ 92 93 int sc_cm_over_data; 94 95 struct usb_cdc_line_state sc_line_state;/* current line state */ 96 u_char sc_dtr; /* current DTR state */ 97 u_char sc_rts; /* current RTS state */ 98 99 struct device *sc_subdev; /* ucom device */ 100 101 u_char sc_opening; /* lock during open */ 102 103 int sc_ctl_notify; /* Notification endpoint */ 104 struct usbd_pipe *sc_notify_pipe; /* Notification pipe */ 105 struct usb_cdc_notification sc_notify_buf; /* Notification structure */ 106 u_char sc_lsr; /* Local status register */ 107 u_char sc_msr; /* Modem status register */ 108 }; 109 110 usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 111 int feature, int state); 112 usbd_status umodem_set_line_coding(struct umodem_softc *sc, 113 struct usb_cdc_line_state *state); 114 115 void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 116 void umodem_set(void *, int, int, int); 117 void umodem_dtr(struct umodem_softc *, int); 118 void umodem_rts(struct umodem_softc *, int); 119 void umodem_break(struct umodem_softc *, int); 120 void umodem_set_line_state(struct umodem_softc *); 121 int umodem_param(void *, int, struct termios *); 122 int umodem_open(void *, int portno); 123 void umodem_close(void *, int portno); 124 void umodem_intr(struct usbd_xfer *, void *, usbd_status); 125 126 struct ucom_methods umodem_methods = { 127 umodem_get_status, 128 umodem_set, 129 umodem_param, 130 NULL, 131 umodem_open, 132 umodem_close, 133 NULL, 134 NULL, 135 }; 136 137 int umodem_match(struct device *, void *, void *); 138 void umodem_attach(struct device *, struct device *, void *); 139 int umodem_detach(struct device *, int); 140 141 void umodem_get_caps(struct usb_attach_arg *, int, int *, int *, int *); 142 143 struct cfdriver umodem_cd = { 144 NULL, "umodem", DV_DULL 145 }; 146 147 const struct cfattach umodem_ca = { 148 sizeof(struct umodem_softc), umodem_match, umodem_attach, umodem_detach 149 }; 150 151 void 152 umodem_get_caps(struct usb_attach_arg *uaa, int ctl_iface_no, 153 int *data_iface_idx, int *cm_cap, int *acm_cap) 154 { 155 const usb_descriptor_t *desc; 156 const usb_interface_descriptor_t *id; 157 const struct usb_cdc_cm_descriptor *cmd; 158 const struct usb_cdc_acm_descriptor *acmd; 159 const struct usb_cdc_union_descriptor *uniond; 160 struct usbd_desc_iter iter; 161 int current_iface_no = -1; 162 int data_iface_no = -1; 163 int i; 164 165 *data_iface_idx = -1; 166 *cm_cap = *acm_cap = 0; 167 usbd_desc_iter_init(uaa->device, &iter); 168 desc = usbd_desc_iter_next(&iter); 169 while (desc) { 170 if (desc->bDescriptorType == UDESC_INTERFACE) { 171 id = (usb_interface_descriptor_t *)desc; 172 current_iface_no = id->bInterfaceNumber; 173 if (current_iface_no != ctl_iface_no && 174 id->bInterfaceClass == UICLASS_CDC_DATA && 175 id->bInterfaceSubClass == UISUBCLASS_DATA && 176 data_iface_no == -1) 177 data_iface_no = current_iface_no; 178 } 179 if (current_iface_no == ctl_iface_no && 180 desc->bDescriptorType == UDESC_CS_INTERFACE) { 181 switch(desc->bDescriptorSubtype) { 182 case UDESCSUB_CDC_CM: 183 cmd = (struct usb_cdc_cm_descriptor *)desc; 184 *cm_cap = cmd->bmCapabilities; 185 data_iface_no = cmd->bDataInterface; 186 break; 187 case UDESCSUB_CDC_ACM: 188 acmd = (struct usb_cdc_acm_descriptor *)desc; 189 *acm_cap = acmd->bmCapabilities; 190 break; 191 case UDESCSUB_CDC_UNION: 192 uniond = 193 (struct usb_cdc_union_descriptor *)desc; 194 data_iface_no = uniond->bSlaveInterface[0]; 195 break; 196 } 197 } 198 desc = usbd_desc_iter_next(&iter); 199 } 200 201 /* 202 * If we got a data interface number, make sure the corresponding 203 * interface exists and is not already claimed. 204 */ 205 if (data_iface_no != -1) { 206 for (i = 0; i < uaa->nifaces; i++) { 207 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 208 209 if (id == NULL) 210 continue; 211 212 if (id->bInterfaceNumber == data_iface_no) { 213 if (!usbd_iface_claimed(uaa->device, i)) 214 *data_iface_idx = i; 215 break; 216 } 217 } 218 } 219 } 220 221 int 222 umodem_match(struct device *parent, void *match, void *aux) 223 { 224 struct usb_attach_arg *uaa = aux; 225 usb_interface_descriptor_t *id; 226 usb_device_descriptor_t *dd; 227 int data_iface_idx, cm_cap, acm_cap, ret = UMATCH_NONE; 228 229 if (uaa->iface == NULL) 230 return (ret); 231 232 id = usbd_get_interface_descriptor(uaa->iface); 233 dd = usbd_get_device_descriptor(uaa->device); 234 if (id == NULL || dd == NULL) 235 return (ret); 236 237 ret = UMATCH_NONE; 238 239 if (UGETW(dd->idVendor) == USB_VENDOR_KYOCERA && 240 UGETW(dd->idProduct) == USB_PRODUCT_KYOCERA_AHK3001V && 241 id->bInterfaceNumber == 0) 242 ret = UMATCH_VENDOR_PRODUCT; 243 244 if (ret == UMATCH_NONE && 245 id->bInterfaceClass == UICLASS_CDC && 246 id->bInterfaceSubClass == UISUBCLASS_ABSTRACT_CONTROL_MODEL && 247 (id->bInterfaceProtocol == UIPROTO_CDC_AT || 248 id->bInterfaceProtocol == UIPROTO_CDC_NOCLASS)) 249 ret = UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO; 250 251 if (ret == UMATCH_NONE) 252 return (ret); 253 254 /* umodem doesn't support devices without a data iface */ 255 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 256 &cm_cap, &acm_cap); 257 if (data_iface_idx == -1) 258 ret = UMATCH_NONE; 259 260 return (ret); 261 } 262 263 void 264 umodem_attach(struct device *parent, struct device *self, void *aux) 265 { 266 struct umodem_softc *sc = (struct umodem_softc *)self; 267 struct usb_attach_arg *uaa = aux; 268 struct usbd_device *dev = uaa->device; 269 usb_interface_descriptor_t *id; 270 usb_endpoint_descriptor_t *ed; 271 usbd_status err; 272 int data_iface_idx = -1; 273 int i; 274 struct ucom_attach_args uca; 275 276 sc->sc_udev = dev; 277 sc->sc_ctl_iface = uaa->iface; 278 279 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 280 //printf("%s: iclass %d/%d\n", sc->sc_dev.dv_xname, 281 // id->bInterfaceClass, id->bInterfaceSubClass); 282 sc->sc_ctl_iface_no = id->bInterfaceNumber; 283 284 /* Get the capabilities. */ 285 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 286 &sc->sc_cm_cap, &sc->sc_acm_cap); 287 288 usbd_claim_iface(sc->sc_udev, data_iface_idx); 289 sc->sc_data_iface = uaa->ifaces[data_iface_idx]; 290 id = usbd_get_interface_descriptor(sc->sc_data_iface); 291 292 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 293 sc->sc_dev.dv_xname, id->bInterfaceNumber, 294 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 295 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 296 297 /* 298 * Find the bulk endpoints. 299 * Iterate over all endpoints in the data interface and take note. 300 */ 301 uca.bulkin = uca.bulkout = -1; 302 303 for (i = 0; i < id->bNumEndpoints; i++) { 304 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 305 if (ed == NULL) { 306 printf("%s: no endpoint descriptor for %d\n", 307 sc->sc_dev.dv_xname, i); 308 goto bad; 309 } 310 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 311 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 312 uca.bulkin = ed->bEndpointAddress; 313 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 314 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 315 uca.bulkout = ed->bEndpointAddress; 316 } 317 } 318 319 if (uca.bulkin == -1) { 320 printf("%s: Could not find data bulk in\n", 321 sc->sc_dev.dv_xname); 322 goto bad; 323 } 324 if (uca.bulkout == -1) { 325 printf("%s: Could not find data bulk out\n", 326 sc->sc_dev.dv_xname); 327 goto bad; 328 } 329 330 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 331 sc->sc_cm_over_data = 1; 332 } else { 333 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 334 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 335 err = umodem_set_comm_feature(sc, 336 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 337 else 338 err = 0; 339 if (err) { 340 printf("%s: could not set data multiplex mode\n", 341 sc->sc_dev.dv_xname); 342 goto bad; 343 } 344 sc->sc_cm_over_data = 1; 345 } 346 } 347 348 /* 349 * The standard allows for notification messages (to indicate things 350 * like a modem hangup) to come in via an interrupt endpoint 351 * off of the control interface. Iterate over the endpoints on 352 * the control interface and see if there are any interrupt 353 * endpoints; if there are, then register it. 354 */ 355 356 sc->sc_ctl_notify = -1; 357 sc->sc_notify_pipe = NULL; 358 359 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 360 for (i = 0; i < id->bNumEndpoints; i++) { 361 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 362 if (ed == NULL) 363 continue; 364 365 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 366 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 367 printf("%s: status change notification available\n", 368 sc->sc_dev.dv_xname); 369 sc->sc_ctl_notify = ed->bEndpointAddress; 370 } 371 } 372 373 sc->sc_dtr = -1; 374 375 uca.portno = UCOM_UNK_PORTNO; 376 /* bulkin, bulkout set above */ 377 uca.ibufsize = UMODEMIBUFSIZE; 378 uca.obufsize = UMODEMOBUFSIZE; 379 uca.ibufsizepad = UMODEMIBUFSIZE; 380 uca.opkthdrlen = 0; 381 uca.device = sc->sc_udev; 382 uca.iface = sc->sc_data_iface; 383 uca.methods = &umodem_methods; 384 uca.arg = sc; 385 uca.info = NULL; 386 387 DPRINTF(("umodem_attach: sc=%p\n", sc)); 388 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 389 390 return; 391 392 bad: 393 usbd_deactivate(sc->sc_udev); 394 } 395 396 int 397 umodem_open(void *addr, int portno) 398 { 399 struct umodem_softc *sc = addr; 400 int err; 401 402 DPRINTF(("umodem_open: sc=%p\n", sc)); 403 404 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 405 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 406 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 407 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 408 umodem_intr, USBD_DEFAULT_INTERVAL); 409 410 if (err) { 411 DPRINTF(("Failed to establish notify pipe: %s\n", 412 usbd_errstr(err))); 413 return EIO; 414 } 415 } 416 417 return 0; 418 } 419 420 void 421 umodem_close(void *addr, int portno) 422 { 423 struct umodem_softc *sc = addr; 424 int err; 425 426 DPRINTF(("umodem_close: sc=%p\n", sc)); 427 428 if (sc->sc_notify_pipe != NULL) { 429 usbd_abort_pipe(sc->sc_notify_pipe); 430 err = usbd_close_pipe(sc->sc_notify_pipe); 431 if (err) 432 printf("%s: close notify pipe failed: %s\n", 433 sc->sc_dev.dv_xname, usbd_errstr(err)); 434 sc->sc_notify_pipe = NULL; 435 } 436 } 437 438 void 439 umodem_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 440 { 441 struct umodem_softc *sc = priv; 442 u_char mstatus; 443 444 if (usbd_is_dying(sc->sc_udev)) 445 return; 446 447 if (status != USBD_NORMAL_COMPLETION) { 448 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 449 return; 450 DPRINTF(("%s: abnormal status: %s\n", sc->sc_dev.dv_xname, 451 usbd_errstr(status))); 452 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe); 453 return; 454 } 455 456 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 457 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 458 sc->sc_dev.dv_xname, 459 sc->sc_notify_buf.bmRequestType)); 460 return; 461 } 462 463 switch (sc->sc_notify_buf.bNotification) { 464 case UCDC_N_SERIAL_STATE: 465 /* 466 * Set the serial state in ucom driver based on 467 * the bits from the notify message 468 */ 469 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 470 printf("%s: Invalid notification length! (%d)\n", 471 sc->sc_dev.dv_xname, 472 UGETW(sc->sc_notify_buf.wLength)); 473 break; 474 } 475 DPRINTF(("%s: notify bytes = %02x%02x\n", 476 sc->sc_dev.dv_xname, 477 sc->sc_notify_buf.data[0], 478 sc->sc_notify_buf.data[1])); 479 /* Currently, lsr is always zero. */ 480 sc->sc_lsr = sc->sc_msr = 0; 481 mstatus = sc->sc_notify_buf.data[0]; 482 483 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 484 sc->sc_msr |= UMSR_RI; 485 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 486 sc->sc_msr |= UMSR_DSR; 487 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 488 sc->sc_msr |= UMSR_DCD; 489 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 490 break; 491 default: 492 DPRINTF(("%s: unknown notify message: %02x\n", 493 sc->sc_dev.dv_xname, 494 sc->sc_notify_buf.bNotification)); 495 break; 496 } 497 } 498 499 void 500 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 501 { 502 struct umodem_softc *sc = addr; 503 504 DPRINTF(("umodem_get_status:\n")); 505 506 if (lsr != NULL) 507 *lsr = sc->sc_lsr; 508 if (msr != NULL) 509 *msr = sc->sc_msr; 510 } 511 512 int 513 umodem_param(void *addr, int portno, struct termios *t) 514 { 515 struct umodem_softc *sc = addr; 516 usbd_status err; 517 struct usb_cdc_line_state ls; 518 519 DPRINTF(("umodem_param: sc=%p\n", sc)); 520 521 USETDW(ls.dwDTERate, t->c_ospeed); 522 if (ISSET(t->c_cflag, CSTOPB)) 523 ls.bCharFormat = UCDC_STOP_BIT_2; 524 else 525 ls.bCharFormat = UCDC_STOP_BIT_1; 526 if (ISSET(t->c_cflag, PARENB)) { 527 if (ISSET(t->c_cflag, PARODD)) 528 ls.bParityType = UCDC_PARITY_ODD; 529 else 530 ls.bParityType = UCDC_PARITY_EVEN; 531 } else 532 ls.bParityType = UCDC_PARITY_NONE; 533 switch (ISSET(t->c_cflag, CSIZE)) { 534 case CS5: 535 ls.bDataBits = 5; 536 break; 537 case CS6: 538 ls.bDataBits = 6; 539 break; 540 case CS7: 541 ls.bDataBits = 7; 542 break; 543 case CS8: 544 ls.bDataBits = 8; 545 break; 546 } 547 548 err = umodem_set_line_coding(sc, &ls); 549 if (err) { 550 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 551 return (1); 552 } 553 return (0); 554 } 555 556 void 557 umodem_dtr(struct umodem_softc *sc, int onoff) 558 { 559 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 560 561 if (sc->sc_dtr == onoff) 562 return; 563 sc->sc_dtr = onoff; 564 565 umodem_set_line_state(sc); 566 } 567 568 void 569 umodem_rts(struct umodem_softc *sc, int onoff) 570 { 571 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 572 573 if (sc->sc_rts == onoff) 574 return; 575 sc->sc_rts = onoff; 576 577 umodem_set_line_state(sc); 578 } 579 580 void 581 umodem_set_line_state(struct umodem_softc *sc) 582 { 583 usb_device_request_t req; 584 int ls; 585 586 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 587 (sc->sc_rts ? UCDC_LINE_RTS : 0); 588 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 589 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 590 USETW(req.wValue, ls); 591 USETW(req.wIndex, sc->sc_ctl_iface_no); 592 USETW(req.wLength, 0); 593 594 (void)usbd_do_request(sc->sc_udev, &req, 0); 595 596 } 597 598 void 599 umodem_break(struct umodem_softc *sc, int onoff) 600 { 601 usb_device_request_t req; 602 603 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 604 605 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 606 return; 607 608 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 609 req.bRequest = UCDC_SEND_BREAK; 610 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 611 USETW(req.wIndex, sc->sc_ctl_iface_no); 612 USETW(req.wLength, 0); 613 614 (void)usbd_do_request(sc->sc_udev, &req, 0); 615 } 616 617 void 618 umodem_set(void *addr, int portno, int reg, int onoff) 619 { 620 struct umodem_softc *sc = addr; 621 622 switch (reg) { 623 case UCOM_SET_DTR: 624 umodem_dtr(sc, onoff); 625 break; 626 case UCOM_SET_RTS: 627 umodem_rts(sc, onoff); 628 break; 629 case UCOM_SET_BREAK: 630 umodem_break(sc, onoff); 631 break; 632 default: 633 break; 634 } 635 } 636 637 usbd_status 638 umodem_set_line_coding(struct umodem_softc *sc, 639 struct usb_cdc_line_state *state) 640 { 641 usb_device_request_t req; 642 usbd_status err; 643 644 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 645 UGETDW(state->dwDTERate), state->bCharFormat, 646 state->bParityType, state->bDataBits)); 647 648 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 649 DPRINTF(("umodem_set_line_coding: already set\n")); 650 return (USBD_NORMAL_COMPLETION); 651 } 652 653 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 654 req.bRequest = UCDC_SET_LINE_CODING; 655 USETW(req.wValue, 0); 656 USETW(req.wIndex, sc->sc_ctl_iface_no); 657 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 658 659 err = usbd_do_request(sc->sc_udev, &req, state); 660 if (err) { 661 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 662 usbd_errstr(err))); 663 return (err); 664 } 665 666 sc->sc_line_state = *state; 667 668 return (USBD_NORMAL_COMPLETION); 669 } 670 671 usbd_status 672 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 673 { 674 usb_device_request_t req; 675 usbd_status err; 676 struct usb_cdc_abstract_state ast; 677 678 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 679 state)); 680 681 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 682 req.bRequest = UCDC_SET_COMM_FEATURE; 683 USETW(req.wValue, feature); 684 USETW(req.wIndex, sc->sc_ctl_iface_no); 685 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 686 USETW(ast.wState, state); 687 688 err = usbd_do_request(sc->sc_udev, &req, &ast); 689 if (err) { 690 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 691 feature, usbd_errstr(err))); 692 return (err); 693 } 694 695 return (USBD_NORMAL_COMPLETION); 696 } 697 698 int 699 umodem_detach(struct device *self, int flags) 700 { 701 struct umodem_softc *sc = (struct umodem_softc *)self; 702 int rv = 0; 703 704 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 705 706 if (sc->sc_notify_pipe != NULL) { 707 usbd_abort_pipe(sc->sc_notify_pipe); 708 usbd_close_pipe(sc->sc_notify_pipe); 709 sc->sc_notify_pipe = NULL; 710 } 711 712 if (sc->sc_subdev != NULL) 713 rv = config_detach(sc->sc_subdev, flags); 714 715 return (rv); 716 } 717