1 /* $OpenBSD: umodem.c,v 1.14 2003/05/07 04:33:33 deraadt 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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Comm Class spec: http://www.usb.org/developers/data/devclass/usbcdc10.pdf 43 * http://www.usb.org/developers/data/devclass/usbcdc11.pdf 44 */ 45 46 /* 47 * TODO: 48 * - Add error recovery in various places; the big problem is what 49 * to do in a callback if there is an error. 50 * - Implement a Call Device for modems without multiplexed commands. 51 * 52 */ 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/ioctl.h> 58 #include <sys/conf.h> 59 #include <sys/tty.h> 60 #include <sys/file.h> 61 #include <sys/select.h> 62 #include <sys/proc.h> 63 #include <sys/vnode.h> 64 #include <sys/device.h> 65 #include <sys/poll.h> 66 67 #include <dev/usb/usb.h> 68 #include <dev/usb/usbcdc.h> 69 70 #include <dev/usb/usbdi.h> 71 #include <dev/usb/usbdi_util.h> 72 #include <dev/usb/usbdevs.h> 73 #include <dev/usb/usb_quirks.h> 74 75 #include <dev/usb/usbdevs.h> 76 #include <dev/usb/ucomvar.h> 77 78 #ifdef UMODEM_DEBUG 79 #define DPRINTFN(n, x) if (umodemdebug > (n)) logprintf x 80 int umodemdebug = 0; 81 #else 82 #define DPRINTFN(n, x) 83 #endif 84 #define DPRINTF(x) DPRINTFN(0, x) 85 86 /* 87 * These are the maximum number of bytes transferred per frame. 88 * If some really high speed devices should use this driver they 89 * may need to be increased, but this is good enough for normal modems. 90 */ 91 #define UMODEMIBUFSIZE 64 92 #define UMODEMOBUFSIZE 256 93 94 struct umodem_softc { 95 USBBASEDEVICE sc_dev; /* base device */ 96 97 usbd_device_handle sc_udev; /* USB device */ 98 99 int sc_ctl_iface_no; 100 usbd_interface_handle sc_ctl_iface; /* control interface */ 101 int sc_data_iface_no; 102 usbd_interface_handle sc_data_iface; /* data interface */ 103 104 int sc_cm_cap; /* CM capabilities */ 105 int sc_acm_cap; /* ACM capabilities */ 106 107 int sc_cm_over_data; 108 109 usb_cdc_line_state_t sc_line_state; /* current line state */ 110 u_char sc_dtr; /* current DTR state */ 111 u_char sc_rts; /* current RTS state */ 112 113 device_ptr_t sc_subdev; /* ucom device */ 114 115 u_char sc_opening; /* lock during open */ 116 u_char sc_dying; /* disconnecting */ 117 118 int sc_ctl_notify; /* Notification endpoint */ 119 usbd_pipe_handle sc_notify_pipe; /* Notification pipe */ 120 usb_cdc_notification_t sc_notify_buf; /* Notification structure */ 121 u_char sc_lsr; /* Local status register */ 122 u_char sc_msr; /* Modem status register */ 123 }; 124 125 Static void *umodem_get_desc(usbd_device_handle dev, int type, int subtype); 126 Static usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 127 int feature, int state); 128 Static usbd_status umodem_set_line_coding(struct umodem_softc *sc, 129 usb_cdc_line_state_t *state); 130 131 Static void umodem_get_caps(usbd_device_handle, int *, int *); 132 133 Static void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 134 Static void umodem_set(void *, int, int, int); 135 Static void umodem_dtr(struct umodem_softc *, int); 136 Static void umodem_rts(struct umodem_softc *, int); 137 Static void umodem_break(struct umodem_softc *, int); 138 Static void umodem_set_line_state(struct umodem_softc *); 139 Static int umodem_param(void *, int, struct termios *); 140 Static int umodem_ioctl(void *, int, u_long, caddr_t, int, usb_proc_ptr); 141 Static int umodem_open(void *, int portno); 142 Static void umodem_close(void *, int portno); 143 Static void umodem_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 144 145 Static struct ucom_methods umodem_methods = { 146 umodem_get_status, 147 umodem_set, 148 umodem_param, 149 umodem_ioctl, 150 umodem_open, 151 umodem_close, 152 NULL, 153 NULL, 154 }; 155 156 USB_DECLARE_DRIVER(umodem); 157 158 USB_MATCH(umodem) 159 { 160 USB_MATCH_START(umodem, uaa); 161 usb_interface_descriptor_t *id; 162 int cm, acm; 163 164 if (uaa->iface == NULL) 165 return (UMATCH_NONE); 166 167 id = usbd_get_interface_descriptor(uaa->iface); 168 if (id == NULL || 169 id->bInterfaceClass != UICLASS_CDC || 170 id->bInterfaceSubClass != UISUBCLASS_ABSTRACT_CONTROL_MODEL || 171 id->bInterfaceProtocol != UIPROTO_CDC_AT) 172 return (UMATCH_NONE); 173 174 umodem_get_caps(uaa->device, &cm, &acm); 175 if (!(cm & USB_CDC_CM_DOES_CM) || 176 !(cm & USB_CDC_CM_OVER_DATA) || 177 !(acm & USB_CDC_ACM_HAS_LINE)) 178 return (UMATCH_NONE); 179 180 return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO); 181 } 182 183 USB_ATTACH(umodem) 184 { 185 USB_ATTACH_START(umodem, sc, uaa); 186 usbd_device_handle dev = uaa->device; 187 usb_interface_descriptor_t *id; 188 usb_endpoint_descriptor_t *ed; 189 usb_cdc_cm_descriptor_t *cmd; 190 char devinfo[1024]; 191 usbd_status err; 192 int data_ifcno; 193 int i; 194 struct ucom_attach_args uca; 195 196 usbd_devinfo(uaa->device, 0, devinfo, sizeof devinfo); 197 USB_ATTACH_SETUP; 198 199 sc->sc_udev = dev; 200 sc->sc_ctl_iface = uaa->iface; 201 202 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 203 printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev), 204 devinfo, id->bInterfaceClass, id->bInterfaceSubClass); 205 sc->sc_ctl_iface_no = id->bInterfaceNumber; 206 207 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap); 208 209 /* Get the data interface no. */ 210 cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); 211 if (cmd == NULL) { 212 printf("%s: no CM descriptor\n", USBDEVNAME(sc->sc_dev)); 213 goto bad; 214 } 215 sc->sc_data_iface_no = data_ifcno = cmd->bDataInterface; 216 217 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 218 USBDEVNAME(sc->sc_dev), data_ifcno, 219 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 220 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 221 222 /* Get the data interface too. */ 223 for (i = 0; i < uaa->nifaces; i++) { 224 if (uaa->ifaces[i] != NULL) { 225 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 226 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 227 sc->sc_data_iface = uaa->ifaces[i]; 228 uaa->ifaces[i] = NULL; 229 } 230 } 231 } 232 if (sc->sc_data_iface == NULL) { 233 printf("%s: no data interface\n", USBDEVNAME(sc->sc_dev)); 234 goto bad; 235 } 236 237 /* 238 * Find the bulk endpoints. 239 * Iterate over all endpoints in the data interface and take note. 240 */ 241 uca.bulkin = uca.bulkout = -1; 242 243 id = usbd_get_interface_descriptor(sc->sc_data_iface); 244 for (i = 0; i < id->bNumEndpoints; i++) { 245 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 246 if (ed == NULL) { 247 printf("%s: no endpoint descriptor for %d\n", 248 USBDEVNAME(sc->sc_dev), i); 249 goto bad; 250 } 251 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 252 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 253 uca.bulkin = ed->bEndpointAddress; 254 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 255 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 256 uca.bulkout = ed->bEndpointAddress; 257 } 258 } 259 260 if (uca.bulkin == -1) { 261 printf("%s: Could not find data bulk in\n", 262 USBDEVNAME(sc->sc_dev)); 263 goto bad; 264 } 265 if (uca.bulkout == -1) { 266 printf("%s: Could not find data bulk out\n", 267 USBDEVNAME(sc->sc_dev)); 268 goto bad; 269 } 270 271 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 272 sc->sc_cm_over_data = 1; 273 } else { 274 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 275 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 276 err = umodem_set_comm_feature(sc, 277 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 278 else 279 err = 0; 280 if (err) { 281 printf("%s: could not set data multiplex mode\n", 282 USBDEVNAME(sc->sc_dev)); 283 goto bad; 284 } 285 sc->sc_cm_over_data = 1; 286 } 287 } 288 289 /* 290 * The standard allows for notification messages (to indicate things 291 * like a modem hangup) to come in via an interrupt endpoint 292 * off of the control interface. Iterate over the endpoints on 293 * the control interface and see if there are any interrupt 294 * endpoints; if there are, then register it. 295 */ 296 297 sc->sc_ctl_notify = -1; 298 sc->sc_notify_pipe = NULL; 299 300 for (i = 0; i < id->bNumEndpoints; i++) { 301 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 302 if (ed == NULL) 303 continue; 304 305 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 306 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 307 printf("%s: status change notification available\n", 308 USBDEVNAME(sc->sc_dev)); 309 sc->sc_ctl_notify = ed->bEndpointAddress; 310 } 311 } 312 313 sc->sc_dtr = -1; 314 315 uca.portno = UCOM_UNK_PORTNO; 316 /* bulkin, bulkout set above */ 317 uca.ibufsize = UMODEMIBUFSIZE; 318 uca.obufsize = UMODEMOBUFSIZE; 319 uca.ibufsizepad = UMODEMIBUFSIZE; 320 uca.opkthdrlen = 0; 321 uca.device = sc->sc_udev; 322 uca.iface = sc->sc_data_iface; 323 uca.methods = &umodem_methods; 324 uca.arg = sc; 325 uca.info = NULL; 326 327 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 328 USBDEV(sc->sc_dev)); 329 330 DPRINTF(("umodem_attach: sc=%p\n", sc)); 331 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 332 333 USB_ATTACH_SUCCESS_RETURN; 334 335 bad: 336 sc->sc_dying = 1; 337 USB_ATTACH_ERROR_RETURN; 338 } 339 340 Static int 341 umodem_open(void *addr, int portno) 342 { 343 struct umodem_softc *sc = addr; 344 int err; 345 346 DPRINTF(("umodem_open: sc=%p\n", sc)); 347 348 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 349 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 350 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 351 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 352 umodem_intr, USBD_DEFAULT_INTERVAL); 353 354 if (err) { 355 DPRINTF(("Failed to establish notify pipe: %s\n", 356 usbd_errstr(err))); 357 return EIO; 358 } 359 } 360 361 return 0; 362 } 363 364 Static void 365 umodem_close(void *addr, int portno) 366 { 367 struct umodem_softc *sc = addr; 368 int err; 369 370 DPRINTF(("umodem_close: sc=%p\n", sc)); 371 372 if (sc->sc_notify_pipe != NULL) { 373 err = usbd_abort_pipe(sc->sc_notify_pipe); 374 if (err) 375 printf("%s: abort notify pipe failed: %s\n", 376 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 377 err = usbd_close_pipe(sc->sc_notify_pipe); 378 if (err) 379 printf("%s: close notify pipe failed: %s\n", 380 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 381 sc->sc_notify_pipe = NULL; 382 } 383 } 384 385 Static void 386 umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 387 { 388 struct umodem_softc *sc = priv; 389 u_char mstatus; 390 391 if (sc->sc_dying) 392 return; 393 394 if (status != USBD_NORMAL_COMPLETION) { 395 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 396 return; 397 printf("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 398 usbd_errstr(status)); 399 return; 400 } 401 402 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 403 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 404 USBDEVNAME(sc->sc_dev), 405 sc->sc_notify_buf.bmRequestType)); 406 return; 407 } 408 409 switch (sc->sc_notify_buf.bNotification) { 410 case UCDC_N_SERIAL_STATE: 411 /* 412 * Set the serial state in ucom driver based on 413 * the bits from the notify message 414 */ 415 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 416 printf("%s: Invalid notification length! (%d)\n", 417 USBDEVNAME(sc->sc_dev), 418 UGETW(sc->sc_notify_buf.wLength)); 419 break; 420 } 421 DPRINTF(("%s: notify bytes = %02x%02x\n", 422 USBDEVNAME(sc->sc_dev), 423 sc->sc_notify_buf.data[0], 424 sc->sc_notify_buf.data[1])); 425 /* Currently, lsr is always zero. */ 426 sc->sc_lsr = sc->sc_msr = 0; 427 mstatus = sc->sc_notify_buf.data[0]; 428 429 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 430 sc->sc_msr |= UMSR_RI; 431 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 432 sc->sc_msr |= UMSR_DSR; 433 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 434 sc->sc_msr |= UMSR_DCD; 435 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 436 break; 437 default: 438 DPRINTF(("%s: unknown notify message: %02x\n", 439 USBDEVNAME(sc->sc_dev), 440 sc->sc_notify_buf.bNotification)); 441 break; 442 } 443 } 444 445 void 446 umodem_get_caps(usbd_device_handle dev, int *cm, int *acm) 447 { 448 usb_cdc_cm_descriptor_t *cmd; 449 usb_cdc_acm_descriptor_t *cad; 450 451 *cm = *acm = 0; 452 453 cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); 454 if (cmd == NULL) { 455 DPRINTF(("umodem_get_desc: no CM desc\n")); 456 return; 457 } 458 *cm = cmd->bmCapabilities; 459 460 cad = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_ACM); 461 if (cad == NULL) { 462 DPRINTF(("umodem_get_desc: no ACM desc\n")); 463 return; 464 } 465 *acm = cad->bmCapabilities; 466 } 467 468 void 469 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 470 { 471 struct umodem_softc *sc = addr; 472 473 DPRINTF(("umodem_get_status:\n")); 474 475 if (lsr != NULL) 476 *lsr = sc->sc_lsr; 477 if (msr != NULL) 478 *msr = sc->sc_msr; 479 } 480 481 int 482 umodem_param(void *addr, int portno, struct termios *t) 483 { 484 struct umodem_softc *sc = addr; 485 usbd_status err; 486 usb_cdc_line_state_t ls; 487 488 DPRINTF(("umodem_param: sc=%p\n", sc)); 489 490 USETDW(ls.dwDTERate, t->c_ospeed); 491 if (ISSET(t->c_cflag, CSTOPB)) 492 ls.bCharFormat = UCDC_STOP_BIT_2; 493 else 494 ls.bCharFormat = UCDC_STOP_BIT_1; 495 if (ISSET(t->c_cflag, PARENB)) { 496 if (ISSET(t->c_cflag, PARODD)) 497 ls.bParityType = UCDC_PARITY_ODD; 498 else 499 ls.bParityType = UCDC_PARITY_EVEN; 500 } else 501 ls.bParityType = UCDC_PARITY_NONE; 502 switch (ISSET(t->c_cflag, CSIZE)) { 503 case CS5: 504 ls.bDataBits = 5; 505 break; 506 case CS6: 507 ls.bDataBits = 6; 508 break; 509 case CS7: 510 ls.bDataBits = 7; 511 break; 512 case CS8: 513 ls.bDataBits = 8; 514 break; 515 } 516 517 err = umodem_set_line_coding(sc, &ls); 518 if (err) { 519 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 520 return (1); 521 } 522 return (0); 523 } 524 525 int 526 umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag, 527 usb_proc_ptr p) 528 { 529 struct umodem_softc *sc = addr; 530 int error = 0; 531 532 if (sc->sc_dying) 533 return (EIO); 534 535 DPRINTF(("umodemioctl: cmd=0x%08lx\n", cmd)); 536 537 switch (cmd) { 538 case USB_GET_CM_OVER_DATA: 539 *(int *)data = sc->sc_cm_over_data; 540 break; 541 542 case USB_SET_CM_OVER_DATA: 543 if (*(int *)data != sc->sc_cm_over_data) { 544 /* XXX change it */ 545 } 546 break; 547 548 default: 549 DPRINTF(("umodemioctl: unknown\n")); 550 error = ENOTTY; 551 break; 552 } 553 554 return (error); 555 } 556 557 void 558 umodem_dtr(struct umodem_softc *sc, int onoff) 559 { 560 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 561 562 if (sc->sc_dtr == onoff) 563 return; 564 sc->sc_dtr = onoff; 565 566 umodem_set_line_state(sc); 567 } 568 569 void 570 umodem_rts(struct umodem_softc *sc, int onoff) 571 { 572 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 573 574 if (sc->sc_rts == onoff) 575 return; 576 sc->sc_rts = onoff; 577 578 umodem_set_line_state(sc); 579 } 580 581 void 582 umodem_set_line_state(struct umodem_softc *sc) 583 { 584 usb_device_request_t req; 585 int ls; 586 587 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 588 (sc->sc_rts ? UCDC_LINE_RTS : 0); 589 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 590 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 591 USETW(req.wValue, ls); 592 USETW(req.wIndex, sc->sc_ctl_iface_no); 593 USETW(req.wLength, 0); 594 595 (void)usbd_do_request(sc->sc_udev, &req, 0); 596 597 } 598 599 void 600 umodem_break(struct umodem_softc *sc, int onoff) 601 { 602 usb_device_request_t req; 603 604 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 605 606 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 607 return; 608 609 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 610 req.bRequest = UCDC_SEND_BREAK; 611 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 612 USETW(req.wIndex, sc->sc_ctl_iface_no); 613 USETW(req.wLength, 0); 614 615 (void)usbd_do_request(sc->sc_udev, &req, 0); 616 } 617 618 void 619 umodem_set(void *addr, int portno, int reg, int onoff) 620 { 621 struct umodem_softc *sc = addr; 622 623 switch (reg) { 624 case UCOM_SET_DTR: 625 umodem_dtr(sc, onoff); 626 break; 627 case UCOM_SET_RTS: 628 umodem_rts(sc, onoff); 629 break; 630 case UCOM_SET_BREAK: 631 umodem_break(sc, onoff); 632 break; 633 default: 634 break; 635 } 636 } 637 638 usbd_status 639 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *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 void * 672 umodem_get_desc(usbd_device_handle dev, int type, int subtype) 673 { 674 usb_descriptor_t *desc; 675 usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev); 676 uByte *p = (uByte *)cd; 677 uByte *end = p + UGETW(cd->wTotalLength); 678 679 while (p < end) { 680 desc = (usb_descriptor_t *)p; 681 if (desc->bDescriptorType == type && 682 desc->bDescriptorSubtype == subtype) 683 return (desc); 684 p += desc->bLength; 685 } 686 687 return (0); 688 } 689 690 usbd_status 691 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 692 { 693 usb_device_request_t req; 694 usbd_status err; 695 usb_cdc_abstract_state_t ast; 696 697 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 698 state)); 699 700 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 701 req.bRequest = UCDC_SET_COMM_FEATURE; 702 USETW(req.wValue, feature); 703 USETW(req.wIndex, sc->sc_ctl_iface_no); 704 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 705 USETW(ast.wState, state); 706 707 err = usbd_do_request(sc->sc_udev, &req, &ast); 708 if (err) { 709 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 710 feature, usbd_errstr(err))); 711 return (err); 712 } 713 714 return (USBD_NORMAL_COMPLETION); 715 } 716 717 int 718 umodem_activate(device_ptr_t self, enum devact act) 719 { 720 struct umodem_softc *sc = (struct umodem_softc *)self; 721 int rv = 0; 722 723 switch (act) { 724 case DVACT_ACTIVATE: 725 return (EOPNOTSUPP); 726 727 case DVACT_DEACTIVATE: 728 sc->sc_dying = 1; 729 if (sc->sc_subdev) 730 rv = config_deactivate(sc->sc_subdev); 731 break; 732 } 733 return (rv); 734 } 735 736 USB_DETACH(umodem) 737 { 738 USB_DETACH_START(umodem, sc); 739 int rv = 0; 740 741 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 742 743 sc->sc_dying = 1; 744 745 if (sc->sc_subdev != NULL) 746 rv = config_detach(sc->sc_subdev, flags); 747 748 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 749 USBDEV(sc->sc_dev)); 750 751 return (rv); 752 } 753