Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/usb/umodem.c
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1 /* $NetBSD: umodem.c,v 1.46 2003/11/07 17:03:25 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Comm Class spec: http://www.usb.org/developers/devclass_docs/usbccs10.pdf 42 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 43 */ 44 45 /* 46 * TODO: 47 * - Add error recovery in various places; the big problem is what 48 * to do in a callback if there is an error. 49 * - Implement a Call Device for modems without multiplexed commands. 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: umodem.c,v 1.46 2003/11/07 17:03:25 wiz Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/ioctl.h> 60 #include <sys/conf.h> 61 #include <sys/tty.h> 62 #include <sys/file.h> 63 #include <sys/select.h> 64 #include <sys/proc.h> 65 #include <sys/vnode.h> 66 #include <sys/device.h> 67 #include <sys/poll.h> 68 69 #include <dev/usb/usb.h> 70 #include <dev/usb/usbcdc.h> 71 72 #include <dev/usb/usbdi.h> 73 #include <dev/usb/usbdi_util.h> 74 #include <dev/usb/usbdevs.h> 75 #include <dev/usb/usb_quirks.h> 76 77 #include <dev/usb/usbdevs.h> 78 #include <dev/usb/ucomvar.h> 79 80 #ifdef UMODEM_DEBUG 81 #define DPRINTFN(n, x) if (umodemdebug > (n)) logprintf x 82 int umodemdebug = 0; 83 #else 84 #define DPRINTFN(n, x) 85 #endif 86 #define DPRINTF(x) DPRINTFN(0, x) 87 88 /* 89 * These are the maximum number of bytes transferred per frame. 90 * If some really high speed devices should use this driver they 91 * may need to be increased, but this is good enough for normal modems. 92 */ 93 #define UMODEMIBUFSIZE 64 94 #define UMODEMOBUFSIZE 256 95 96 struct umodem_softc { 97 USBBASEDEVICE sc_dev; /* base device */ 98 99 usbd_device_handle sc_udev; /* USB device */ 100 101 int sc_ctl_iface_no; 102 usbd_interface_handle sc_ctl_iface; /* control interface */ 103 int sc_data_iface_no; 104 usbd_interface_handle sc_data_iface; /* data interface */ 105 106 int sc_cm_cap; /* CM capabilities */ 107 int sc_acm_cap; /* ACM capabilities */ 108 109 int sc_cm_over_data; 110 111 usb_cdc_line_state_t sc_line_state; /* current line state */ 112 u_char sc_dtr; /* current DTR state */ 113 u_char sc_rts; /* current RTS state */ 114 115 device_ptr_t sc_subdev; /* ucom device */ 116 117 u_char sc_opening; /* lock during open */ 118 u_char sc_dying; /* disconnecting */ 119 120 int sc_ctl_notify; /* Notification endpoint */ 121 usbd_pipe_handle sc_notify_pipe; /* Notification pipe */ 122 usb_cdc_notification_t sc_notify_buf; /* Notification structure */ 123 u_char sc_lsr; /* Local status register */ 124 u_char sc_msr; /* Modem status register */ 125 }; 126 127 Static void *umodem_get_desc(usbd_device_handle dev, int type, int subtype); 128 Static usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 129 int feature, int state); 130 Static usbd_status umodem_set_line_coding(struct umodem_softc *sc, 131 usb_cdc_line_state_t *state); 132 133 Static void umodem_get_caps(usbd_device_handle, int *, int *); 134 135 Static void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 136 Static void umodem_set(void *, int, int, int); 137 Static void umodem_dtr(struct umodem_softc *, int); 138 Static void umodem_rts(struct umodem_softc *, int); 139 Static void umodem_break(struct umodem_softc *, int); 140 Static void umodem_set_line_state(struct umodem_softc *); 141 Static int umodem_param(void *, int, struct termios *); 142 Static int umodem_ioctl(void *, int, u_long, caddr_t, int, usb_proc_ptr ); 143 Static int umodem_open(void *, int portno); 144 Static void umodem_close(void *, int portno); 145 Static void umodem_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 146 147 Static struct ucom_methods umodem_methods = { 148 umodem_get_status, 149 umodem_set, 150 umodem_param, 151 umodem_ioctl, 152 umodem_open, 153 umodem_close, 154 NULL, 155 NULL, 156 }; 157 158 USB_DECLARE_DRIVER(umodem); 159 160 USB_MATCH(umodem) 161 { 162 USB_MATCH_START(umodem, uaa); 163 usb_interface_descriptor_t *id; 164 int cm, acm; 165 166 if (uaa->iface == NULL) 167 return (UMATCH_NONE); 168 169 id = usbd_get_interface_descriptor(uaa->iface); 170 if (id == NULL || 171 id->bInterfaceClass != UICLASS_CDC || 172 id->bInterfaceSubClass != UISUBCLASS_ABSTRACT_CONTROL_MODEL || 173 id->bInterfaceProtocol != UIPROTO_CDC_AT) 174 return (UMATCH_NONE); 175 176 umodem_get_caps(uaa->device, &cm, &acm); 177 if (!(cm & USB_CDC_CM_DOES_CM) || 178 !(cm & USB_CDC_CM_OVER_DATA) || 179 !(acm & USB_CDC_ACM_HAS_LINE)) 180 return (UMATCH_NONE); 181 182 return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO); 183 } 184 185 USB_ATTACH(umodem) 186 { 187 USB_ATTACH_START(umodem, sc, uaa); 188 usbd_device_handle dev = uaa->device; 189 usb_interface_descriptor_t *id; 190 usb_endpoint_descriptor_t *ed; 191 usb_cdc_cm_descriptor_t *cmd; 192 char devinfo[1024]; 193 usbd_status err; 194 int data_ifcno; 195 int i; 196 struct ucom_attach_args uca; 197 198 usbd_devinfo(uaa->device, 0, devinfo); 199 USB_ATTACH_SETUP; 200 201 sc->sc_udev = dev; 202 sc->sc_ctl_iface = uaa->iface; 203 204 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 205 printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev), 206 devinfo, id->bInterfaceClass, id->bInterfaceSubClass); 207 sc->sc_ctl_iface_no = id->bInterfaceNumber; 208 209 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap); 210 211 /* Get the data interface no. */ 212 cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); 213 if (cmd == NULL) { 214 printf("%s: no CM descriptor\n", USBDEVNAME(sc->sc_dev)); 215 goto bad; 216 } 217 sc->sc_data_iface_no = data_ifcno = cmd->bDataInterface; 218 219 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 220 USBDEVNAME(sc->sc_dev), data_ifcno, 221 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 222 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 223 224 /* Get the data interface too. */ 225 for (i = 0; i < uaa->nifaces; i++) { 226 if (uaa->ifaces[i] != NULL) { 227 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 228 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 229 sc->sc_data_iface = uaa->ifaces[i]; 230 uaa->ifaces[i] = NULL; 231 } 232 } 233 } 234 if (sc->sc_data_iface == NULL) { 235 printf("%s: no data interface\n", USBDEVNAME(sc->sc_dev)); 236 goto bad; 237 } 238 239 /* 240 * Find the bulk endpoints. 241 * Iterate over all endpoints in the data interface and take note. 242 */ 243 uca.bulkin = uca.bulkout = -1; 244 245 id = usbd_get_interface_descriptor(sc->sc_data_iface); 246 for (i = 0; i < id->bNumEndpoints; i++) { 247 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 248 if (ed == NULL) { 249 printf("%s: no endpoint descriptor for %d\n", 250 USBDEVNAME(sc->sc_dev), i); 251 goto bad; 252 } 253 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 254 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 255 uca.bulkin = ed->bEndpointAddress; 256 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 257 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 258 uca.bulkout = ed->bEndpointAddress; 259 } 260 } 261 262 if (uca.bulkin == -1) { 263 printf("%s: Could not find data bulk in\n", 264 USBDEVNAME(sc->sc_dev)); 265 goto bad; 266 } 267 if (uca.bulkout == -1) { 268 printf("%s: Could not find data bulk out\n", 269 USBDEVNAME(sc->sc_dev)); 270 goto bad; 271 } 272 273 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 274 sc->sc_cm_over_data = 1; 275 } else { 276 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 277 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 278 err = umodem_set_comm_feature(sc, 279 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 280 else 281 err = 0; 282 if (err) { 283 printf("%s: could not set data multiplex mode\n", 284 USBDEVNAME(sc->sc_dev)); 285 goto bad; 286 } 287 sc->sc_cm_over_data = 1; 288 } 289 } 290 291 /* 292 * The standard allows for notification messages (to indicate things 293 * like a modem hangup) to come in via an interrupt endpoint 294 * off of the control interface. Iterate over the endpoints on 295 * the control interface and see if there are any interrupt 296 * endpoints; if there are, then register it. 297 */ 298 299 sc->sc_ctl_notify = -1; 300 sc->sc_notify_pipe = NULL; 301 302 for (i = 0; i < id->bNumEndpoints; i++) { 303 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 304 if (ed == NULL) 305 continue; 306 307 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 308 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 309 printf("%s: status change notification available\n", 310 USBDEVNAME(sc->sc_dev)); 311 sc->sc_ctl_notify = ed->bEndpointAddress; 312 } 313 } 314 315 sc->sc_dtr = -1; 316 317 uca.portno = UCOM_UNK_PORTNO; 318 /* bulkin, bulkout set above */ 319 uca.ibufsize = UMODEMIBUFSIZE; 320 uca.obufsize = UMODEMOBUFSIZE; 321 uca.ibufsizepad = UMODEMIBUFSIZE; 322 uca.opkthdrlen = 0; 323 uca.device = sc->sc_udev; 324 uca.iface = sc->sc_data_iface; 325 uca.methods = &umodem_methods; 326 uca.arg = sc; 327 uca.info = NULL; 328 329 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 330 USBDEV(sc->sc_dev)); 331 332 DPRINTF(("umodem_attach: sc=%p\n", sc)); 333 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 334 335 USB_ATTACH_SUCCESS_RETURN; 336 337 bad: 338 sc->sc_dying = 1; 339 USB_ATTACH_ERROR_RETURN; 340 } 341 342 Static int 343 umodem_open(void *addr, int portno) 344 { 345 struct umodem_softc *sc = addr; 346 int err; 347 348 DPRINTF(("umodem_open: sc=%p\n", sc)); 349 350 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 351 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 352 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 353 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 354 umodem_intr, USBD_DEFAULT_INTERVAL); 355 356 if (err) { 357 DPRINTF(("Failed to establish notify pipe: %s\n", 358 usbd_errstr(err))); 359 return EIO; 360 } 361 } 362 363 return 0; 364 } 365 366 Static void 367 umodem_close(void *addr, int portno) 368 { 369 struct umodem_softc *sc = addr; 370 int err; 371 372 DPRINTF(("umodem_close: sc=%p\n", sc)); 373 374 if (sc->sc_notify_pipe != NULL) { 375 err = usbd_abort_pipe(sc->sc_notify_pipe); 376 if (err) 377 printf("%s: abort notify pipe failed: %s\n", 378 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 379 err = usbd_close_pipe(sc->sc_notify_pipe); 380 if (err) 381 printf("%s: close notify pipe failed: %s\n", 382 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 383 sc->sc_notify_pipe = NULL; 384 } 385 } 386 387 Static void 388 umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 389 { 390 struct umodem_softc *sc = priv; 391 u_char mstatus; 392 393 if (sc->sc_dying) 394 return; 395 396 if (status != USBD_NORMAL_COMPLETION) { 397 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 398 return; 399 printf("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 400 usbd_errstr(status)); 401 return; 402 } 403 404 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 405 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 406 USBDEVNAME(sc->sc_dev), 407 sc->sc_notify_buf.bmRequestType)); 408 return; 409 } 410 411 switch (sc->sc_notify_buf.bNotification) { 412 case UCDC_N_SERIAL_STATE: 413 /* 414 * Set the serial state in ucom driver based on 415 * the bits from the notify message 416 */ 417 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 418 printf("%s: Invalid notification length! (%d)\n", 419 USBDEVNAME(sc->sc_dev), 420 UGETW(sc->sc_notify_buf.wLength)); 421 break; 422 } 423 DPRINTF(("%s: notify bytes = %02x%02x\n", 424 USBDEVNAME(sc->sc_dev), 425 sc->sc_notify_buf.data[0], 426 sc->sc_notify_buf.data[1])); 427 /* Currently, lsr is always zero. */ 428 sc->sc_lsr = sc->sc_msr = 0; 429 mstatus = sc->sc_notify_buf.data[0]; 430 431 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 432 sc->sc_msr |= UMSR_RI; 433 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 434 sc->sc_msr |= UMSR_DSR; 435 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 436 sc->sc_msr |= UMSR_DCD; 437 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 438 break; 439 default: 440 DPRINTF(("%s: unknown notify message: %02x\n", 441 USBDEVNAME(sc->sc_dev), 442 sc->sc_notify_buf.bNotification)); 443 break; 444 } 445 } 446 447 void 448 umodem_get_caps(usbd_device_handle dev, int *cm, int *acm) 449 { 450 usb_cdc_cm_descriptor_t *cmd; 451 usb_cdc_acm_descriptor_t *cad; 452 453 *cm = *acm = 0; 454 455 cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); 456 if (cmd == NULL) { 457 DPRINTF(("umodem_get_desc: no CM desc\n")); 458 return; 459 } 460 *cm = cmd->bmCapabilities; 461 462 cad = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_ACM); 463 if (cad == NULL) { 464 DPRINTF(("umodem_get_desc: no ACM desc\n")); 465 return; 466 } 467 *acm = cad->bmCapabilities; 468 } 469 470 void 471 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 472 { 473 struct umodem_softc *sc = addr; 474 475 DPRINTF(("umodem_get_status:\n")); 476 477 if (lsr != NULL) 478 *lsr = sc->sc_lsr; 479 if (msr != NULL) 480 *msr = sc->sc_msr; 481 } 482 483 int 484 umodem_param(void *addr, int portno, struct termios *t) 485 { 486 struct umodem_softc *sc = addr; 487 usbd_status err; 488 usb_cdc_line_state_t ls; 489 490 DPRINTF(("umodem_param: sc=%p\n", sc)); 491 492 USETDW(ls.dwDTERate, t->c_ospeed); 493 if (ISSET(t->c_cflag, CSTOPB)) 494 ls.bCharFormat = UCDC_STOP_BIT_2; 495 else 496 ls.bCharFormat = UCDC_STOP_BIT_1; 497 if (ISSET(t->c_cflag, PARENB)) { 498 if (ISSET(t->c_cflag, PARODD)) 499 ls.bParityType = UCDC_PARITY_ODD; 500 else 501 ls.bParityType = UCDC_PARITY_EVEN; 502 } else 503 ls.bParityType = UCDC_PARITY_NONE; 504 switch (ISSET(t->c_cflag, CSIZE)) { 505 case CS5: 506 ls.bDataBits = 5; 507 break; 508 case CS6: 509 ls.bDataBits = 6; 510 break; 511 case CS7: 512 ls.bDataBits = 7; 513 break; 514 case CS8: 515 ls.bDataBits = 8; 516 break; 517 } 518 519 err = umodem_set_line_coding(sc, &ls); 520 if (err) { 521 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 522 return (EPASSTHROUGH); 523 } 524 return (0); 525 } 526 527 int 528 umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag, 529 usb_proc_ptr p) 530 { 531 struct umodem_softc *sc = addr; 532 int error = 0; 533 534 if (sc->sc_dying) 535 return (EIO); 536 537 DPRINTF(("umodemioctl: cmd=0x%08lx\n", cmd)); 538 539 switch (cmd) { 540 case USB_GET_CM_OVER_DATA: 541 *(int *)data = sc->sc_cm_over_data; 542 break; 543 544 case USB_SET_CM_OVER_DATA: 545 if (*(int *)data != sc->sc_cm_over_data) { 546 /* XXX change it */ 547 } 548 break; 549 550 default: 551 DPRINTF(("umodemioctl: unknown\n")); 552 error = EPASSTHROUGH; 553 break; 554 } 555 556 return (error); 557 } 558 559 void 560 umodem_dtr(struct umodem_softc *sc, int onoff) 561 { 562 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 563 564 if (sc->sc_dtr == onoff) 565 return; 566 sc->sc_dtr = onoff; 567 568 umodem_set_line_state(sc); 569 } 570 571 void 572 umodem_rts(struct umodem_softc *sc, int onoff) 573 { 574 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 575 576 if (sc->sc_rts == onoff) 577 return; 578 sc->sc_rts = onoff; 579 580 umodem_set_line_state(sc); 581 } 582 583 void 584 umodem_set_line_state(struct umodem_softc *sc) 585 { 586 usb_device_request_t req; 587 int ls; 588 589 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 590 (sc->sc_rts ? UCDC_LINE_RTS : 0); 591 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 592 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 593 USETW(req.wValue, ls); 594 USETW(req.wIndex, sc->sc_ctl_iface_no); 595 USETW(req.wLength, 0); 596 597 (void)usbd_do_request(sc->sc_udev, &req, 0); 598 599 } 600 601 void 602 umodem_break(struct umodem_softc *sc, int onoff) 603 { 604 usb_device_request_t req; 605 606 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 607 608 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 609 return; 610 611 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 612 req.bRequest = UCDC_SEND_BREAK; 613 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 614 USETW(req.wIndex, sc->sc_ctl_iface_no); 615 USETW(req.wLength, 0); 616 617 (void)usbd_do_request(sc->sc_udev, &req, 0); 618 } 619 620 void 621 umodem_set(void *addr, int portno, int reg, int onoff) 622 { 623 struct umodem_softc *sc = addr; 624 625 switch (reg) { 626 case UCOM_SET_DTR: 627 umodem_dtr(sc, onoff); 628 break; 629 case UCOM_SET_RTS: 630 umodem_rts(sc, onoff); 631 break; 632 case UCOM_SET_BREAK: 633 umodem_break(sc, onoff); 634 break; 635 default: 636 break; 637 } 638 } 639 640 usbd_status 641 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 642 { 643 usb_device_request_t req; 644 usbd_status err; 645 646 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 647 UGETDW(state->dwDTERate), state->bCharFormat, 648 state->bParityType, state->bDataBits)); 649 650 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 651 DPRINTF(("umodem_set_line_coding: already set\n")); 652 return (USBD_NORMAL_COMPLETION); 653 } 654 655 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 656 req.bRequest = UCDC_SET_LINE_CODING; 657 USETW(req.wValue, 0); 658 USETW(req.wIndex, sc->sc_ctl_iface_no); 659 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 660 661 err = usbd_do_request(sc->sc_udev, &req, state); 662 if (err) { 663 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 664 usbd_errstr(err))); 665 return (err); 666 } 667 668 sc->sc_line_state = *state; 669 670 return (USBD_NORMAL_COMPLETION); 671 } 672 673 void * 674 umodem_get_desc(usbd_device_handle dev, int type, int subtype) 675 { 676 usb_descriptor_t *desc; 677 usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev); 678 uByte *p = (uByte *)cd; 679 uByte *end = p + UGETW(cd->wTotalLength); 680 681 while (p < end) { 682 desc = (usb_descriptor_t *)p; 683 if (desc->bDescriptorType == type && 684 desc->bDescriptorSubtype == subtype) 685 return (desc); 686 p += desc->bLength; 687 } 688 689 return (0); 690 } 691 692 usbd_status 693 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 694 { 695 usb_device_request_t req; 696 usbd_status err; 697 usb_cdc_abstract_state_t ast; 698 699 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 700 state)); 701 702 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 703 req.bRequest = UCDC_SET_COMM_FEATURE; 704 USETW(req.wValue, feature); 705 USETW(req.wIndex, sc->sc_ctl_iface_no); 706 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 707 USETW(ast.wState, state); 708 709 err = usbd_do_request(sc->sc_udev, &req, &ast); 710 if (err) { 711 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 712 feature, usbd_errstr(err))); 713 return (err); 714 } 715 716 return (USBD_NORMAL_COMPLETION); 717 } 718 719 int 720 umodem_activate(device_ptr_t self, enum devact act) 721 { 722 struct umodem_softc *sc = (struct umodem_softc *)self; 723 int rv = 0; 724 725 switch (act) { 726 case DVACT_ACTIVATE: 727 return (EOPNOTSUPP); 728 729 case DVACT_DEACTIVATE: 730 sc->sc_dying = 1; 731 if (sc->sc_subdev) 732 rv = config_deactivate(sc->sc_subdev); 733 break; 734 } 735 return (rv); 736 } 737 738 USB_DETACH(umodem) 739 { 740 USB_DETACH_START(umodem, sc); 741 int rv = 0; 742 743 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 744 745 sc->sc_dying = 1; 746 747 if (sc->sc_subdev != NULL) 748 rv = config_detach(sc->sc_subdev, flags); 749 750 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 751 USBDEV(sc->sc_dev)); 752 753 return (rv); 754 }
Cache object: 62043daecc8816d6ca0af342153e8a68
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