1 /* $NetBSD: umodem.c,v 1.49 2004/10/23 13:28:26 augustss 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 1.49 2004/10/23 13:28:26 augustss 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 usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 128 int feature, int state); 129 Static usbd_status umodem_set_line_coding(struct umodem_softc *sc, 130 usb_cdc_line_state_t *state); 131 132 Static void umodem_get_caps(usbd_device_handle, int *, int *); 133 134 Static void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 135 Static void umodem_set(void *, int, int, int); 136 Static void umodem_dtr(struct umodem_softc *, int); 137 Static void umodem_rts(struct umodem_softc *, int); 138 Static void umodem_break(struct umodem_softc *, int); 139 Static void umodem_set_line_state(struct umodem_softc *); 140 Static int umodem_param(void *, int, struct termios *); 141 Static int umodem_ioctl(void *, int, u_long, caddr_t, int, usb_proc_ptr ); 142 Static int umodem_open(void *, int portno); 143 Static void umodem_close(void *, int portno); 144 Static void umodem_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 145 146 Static struct ucom_methods umodem_methods = { 147 umodem_get_status, 148 umodem_set, 149 umodem_param, 150 umodem_ioctl, 151 umodem_open, 152 umodem_close, 153 NULL, 154 NULL, 155 }; 156 157 USB_DECLARE_DRIVER(umodem); 158 159 USB_MATCH(umodem) 160 { 161 USB_MATCH_START(umodem, uaa); 162 usb_interface_descriptor_t *id; 163 int cm, acm; 164 165 if (uaa->iface == NULL) 166 return (UMATCH_NONE); 167 168 id = usbd_get_interface_descriptor(uaa->iface); 169 if (id == NULL || 170 id->bInterfaceClass != UICLASS_CDC || 171 id->bInterfaceSubClass != UISUBCLASS_ABSTRACT_CONTROL_MODEL || 172 id->bInterfaceProtocol != UIPROTO_CDC_AT) 173 return (UMATCH_NONE); 174 175 umodem_get_caps(uaa->device, &cm, &acm); 176 if (!(cm & USB_CDC_CM_DOES_CM) || 177 !(cm & USB_CDC_CM_OVER_DATA) || 178 !(acm & USB_CDC_ACM_HAS_LINE)) 179 return (UMATCH_NONE); 180 181 return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO); 182 } 183 184 USB_ATTACH(umodem) 185 { 186 USB_ATTACH_START(umodem, sc, uaa); 187 usbd_device_handle dev = uaa->device; 188 usb_interface_descriptor_t *id; 189 usb_endpoint_descriptor_t *ed; 190 const usb_cdc_cm_descriptor_t *cmd; 191 char devinfo[1024]; 192 usbd_status err; 193 int data_ifcno; 194 int i; 195 struct ucom_attach_args uca; 196 197 usbd_devinfo(uaa->device, 0, devinfo, sizeof(devinfo)); 198 USB_ATTACH_SETUP; 199 200 sc->sc_udev = dev; 201 sc->sc_ctl_iface = uaa->iface; 202 203 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 204 printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev), 205 devinfo, id->bInterfaceClass, id->bInterfaceSubClass); 206 sc->sc_ctl_iface_no = id->bInterfaceNumber; 207 208 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap); 209 210 /* Get the data interface no. */ 211 cmd = (usb_cdc_cm_descriptor_t *)usb_find_desc(dev, UDESC_CS_INTERFACE, 212 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_loc(self, "ucombus", NULL, &uca, 334 ucomprint, ucomsubmatch); 335 336 USB_ATTACH_SUCCESS_RETURN; 337 338 bad: 339 sc->sc_dying = 1; 340 USB_ATTACH_ERROR_RETURN; 341 } 342 343 Static int 344 umodem_open(void *addr, int portno) 345 { 346 struct umodem_softc *sc = addr; 347 int err; 348 349 DPRINTF(("umodem_open: sc=%p\n", sc)); 350 351 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 352 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 353 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 354 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 355 umodem_intr, USBD_DEFAULT_INTERVAL); 356 357 if (err) { 358 DPRINTF(("Failed to establish notify pipe: %s\n", 359 usbd_errstr(err))); 360 return EIO; 361 } 362 } 363 364 return 0; 365 } 366 367 Static void 368 umodem_close(void *addr, int portno) 369 { 370 struct umodem_softc *sc = addr; 371 int err; 372 373 DPRINTF(("umodem_close: sc=%p\n", sc)); 374 375 if (sc->sc_notify_pipe != NULL) { 376 err = usbd_abort_pipe(sc->sc_notify_pipe); 377 if (err) 378 printf("%s: abort notify pipe failed: %s\n", 379 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 380 err = usbd_close_pipe(sc->sc_notify_pipe); 381 if (err) 382 printf("%s: close notify pipe failed: %s\n", 383 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 384 sc->sc_notify_pipe = NULL; 385 } 386 } 387 388 Static void 389 umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 390 { 391 struct umodem_softc *sc = priv; 392 u_char mstatus; 393 394 if (sc->sc_dying) 395 return; 396 397 if (status != USBD_NORMAL_COMPLETION) { 398 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 399 return; 400 printf("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 401 usbd_errstr(status)); 402 return; 403 } 404 405 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 406 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 407 USBDEVNAME(sc->sc_dev), 408 sc->sc_notify_buf.bmRequestType)); 409 return; 410 } 411 412 switch (sc->sc_notify_buf.bNotification) { 413 case UCDC_N_SERIAL_STATE: 414 /* 415 * Set the serial state in ucom driver based on 416 * the bits from the notify message 417 */ 418 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 419 printf("%s: Invalid notification length! (%d)\n", 420 USBDEVNAME(sc->sc_dev), 421 UGETW(sc->sc_notify_buf.wLength)); 422 break; 423 } 424 DPRINTF(("%s: notify bytes = %02x%02x\n", 425 USBDEVNAME(sc->sc_dev), 426 sc->sc_notify_buf.data[0], 427 sc->sc_notify_buf.data[1])); 428 /* Currently, lsr is always zero. */ 429 sc->sc_lsr = sc->sc_msr = 0; 430 mstatus = sc->sc_notify_buf.data[0]; 431 432 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 433 sc->sc_msr |= UMSR_RI; 434 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 435 sc->sc_msr |= UMSR_DSR; 436 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 437 sc->sc_msr |= UMSR_DCD; 438 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 439 break; 440 default: 441 DPRINTF(("%s: unknown notify message: %02x\n", 442 USBDEVNAME(sc->sc_dev), 443 sc->sc_notify_buf.bNotification)); 444 break; 445 } 446 } 447 448 void 449 umodem_get_caps(usbd_device_handle dev, int *cm, int *acm) 450 { 451 const usb_cdc_cm_descriptor_t *cmd; 452 const usb_cdc_acm_descriptor_t *cad; 453 454 *cm = *acm = 0; 455 456 cmd = (usb_cdc_cm_descriptor_t *)usb_find_desc(dev, UDESC_CS_INTERFACE, 457 UDESCSUB_CDC_CM); 458 if (cmd == NULL) { 459 DPRINTF(("umodem_get_desc: no CM desc\n")); 460 return; 461 } 462 *cm = cmd->bmCapabilities; 463 464 cad = (usb_cdc_acm_descriptor_t *)usb_find_desc(dev, UDESC_CS_INTERFACE, 465 UDESCSUB_CDC_ACM); 466 if (cad == NULL) { 467 DPRINTF(("umodem_get_desc: no ACM desc\n")); 468 return; 469 } 470 *acm = cad->bmCapabilities; 471 } 472 473 void 474 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 475 { 476 struct umodem_softc *sc = addr; 477 478 DPRINTF(("umodem_get_status:\n")); 479 480 if (lsr != NULL) 481 *lsr = sc->sc_lsr; 482 if (msr != NULL) 483 *msr = sc->sc_msr; 484 } 485 486 int 487 umodem_param(void *addr, int portno, struct termios *t) 488 { 489 struct umodem_softc *sc = addr; 490 usbd_status err; 491 usb_cdc_line_state_t ls; 492 493 DPRINTF(("umodem_param: sc=%p\n", sc)); 494 495 USETDW(ls.dwDTERate, t->c_ospeed); 496 if (ISSET(t->c_cflag, CSTOPB)) 497 ls.bCharFormat = UCDC_STOP_BIT_2; 498 else 499 ls.bCharFormat = UCDC_STOP_BIT_1; 500 if (ISSET(t->c_cflag, PARENB)) { 501 if (ISSET(t->c_cflag, PARODD)) 502 ls.bParityType = UCDC_PARITY_ODD; 503 else 504 ls.bParityType = UCDC_PARITY_EVEN; 505 } else 506 ls.bParityType = UCDC_PARITY_NONE; 507 switch (ISSET(t->c_cflag, CSIZE)) { 508 case CS5: 509 ls.bDataBits = 5; 510 break; 511 case CS6: 512 ls.bDataBits = 6; 513 break; 514 case CS7: 515 ls.bDataBits = 7; 516 break; 517 case CS8: 518 ls.bDataBits = 8; 519 break; 520 } 521 522 err = umodem_set_line_coding(sc, &ls); 523 if (err) { 524 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 525 return (EPASSTHROUGH); 526 } 527 return (0); 528 } 529 530 int 531 umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag, 532 usb_proc_ptr p) 533 { 534 struct umodem_softc *sc = addr; 535 int error = 0; 536 537 if (sc->sc_dying) 538 return (EIO); 539 540 DPRINTF(("umodemioctl: cmd=0x%08lx\n", cmd)); 541 542 switch (cmd) { 543 case USB_GET_CM_OVER_DATA: 544 *(int *)data = sc->sc_cm_over_data; 545 break; 546 547 case USB_SET_CM_OVER_DATA: 548 if (*(int *)data != sc->sc_cm_over_data) { 549 /* XXX change it */ 550 } 551 break; 552 553 default: 554 DPRINTF(("umodemioctl: unknown\n")); 555 error = EPASSTHROUGH; 556 break; 557 } 558 559 return (error); 560 } 561 562 void 563 umodem_dtr(struct umodem_softc *sc, int onoff) 564 { 565 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 566 567 if (sc->sc_dtr == onoff) 568 return; 569 sc->sc_dtr = onoff; 570 571 umodem_set_line_state(sc); 572 } 573 574 void 575 umodem_rts(struct umodem_softc *sc, int onoff) 576 { 577 DPRINTF(("umodem_modem: onoff=%d\n", onoff)); 578 579 if (sc->sc_rts == onoff) 580 return; 581 sc->sc_rts = onoff; 582 583 umodem_set_line_state(sc); 584 } 585 586 void 587 umodem_set_line_state(struct umodem_softc *sc) 588 { 589 usb_device_request_t req; 590 int ls; 591 592 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 593 (sc->sc_rts ? UCDC_LINE_RTS : 0); 594 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 595 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 596 USETW(req.wValue, ls); 597 USETW(req.wIndex, sc->sc_ctl_iface_no); 598 USETW(req.wLength, 0); 599 600 (void)usbd_do_request(sc->sc_udev, &req, 0); 601 602 } 603 604 void 605 umodem_break(struct umodem_softc *sc, int onoff) 606 { 607 usb_device_request_t req; 608 609 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 610 611 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 612 return; 613 614 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 615 req.bRequest = UCDC_SEND_BREAK; 616 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 617 USETW(req.wIndex, sc->sc_ctl_iface_no); 618 USETW(req.wLength, 0); 619 620 (void)usbd_do_request(sc->sc_udev, &req, 0); 621 } 622 623 void 624 umodem_set(void *addr, int portno, int reg, int onoff) 625 { 626 struct umodem_softc *sc = addr; 627 628 switch (reg) { 629 case UCOM_SET_DTR: 630 umodem_dtr(sc, onoff); 631 break; 632 case UCOM_SET_RTS: 633 umodem_rts(sc, onoff); 634 break; 635 case UCOM_SET_BREAK: 636 umodem_break(sc, onoff); 637 break; 638 default: 639 break; 640 } 641 } 642 643 usbd_status 644 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 645 { 646 usb_device_request_t req; 647 usbd_status err; 648 649 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 650 UGETDW(state->dwDTERate), state->bCharFormat, 651 state->bParityType, state->bDataBits)); 652 653 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 654 DPRINTF(("umodem_set_line_coding: already set\n")); 655 return (USBD_NORMAL_COMPLETION); 656 } 657 658 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 659 req.bRequest = UCDC_SET_LINE_CODING; 660 USETW(req.wValue, 0); 661 USETW(req.wIndex, sc->sc_ctl_iface_no); 662 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 663 664 err = usbd_do_request(sc->sc_udev, &req, state); 665 if (err) { 666 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 667 usbd_errstr(err))); 668 return (err); 669 } 670 671 sc->sc_line_state = *state; 672 673 return (USBD_NORMAL_COMPLETION); 674 } 675 676 usbd_status 677 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 678 { 679 usb_device_request_t req; 680 usbd_status err; 681 usb_cdc_abstract_state_t ast; 682 683 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 684 state)); 685 686 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 687 req.bRequest = UCDC_SET_COMM_FEATURE; 688 USETW(req.wValue, feature); 689 USETW(req.wIndex, sc->sc_ctl_iface_no); 690 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 691 USETW(ast.wState, state); 692 693 err = usbd_do_request(sc->sc_udev, &req, &ast); 694 if (err) { 695 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 696 feature, usbd_errstr(err))); 697 return (err); 698 } 699 700 return (USBD_NORMAL_COMPLETION); 701 } 702 703 int 704 umodem_activate(device_ptr_t self, enum devact act) 705 { 706 struct umodem_softc *sc = (struct umodem_softc *)self; 707 int rv = 0; 708 709 switch (act) { 710 case DVACT_ACTIVATE: 711 return (EOPNOTSUPP); 712 713 case DVACT_DEACTIVATE: 714 sc->sc_dying = 1; 715 if (sc->sc_subdev) 716 rv = config_deactivate(sc->sc_subdev); 717 break; 718 } 719 return (rv); 720 } 721 722 USB_DETACH(umodem) 723 { 724 USB_DETACH_START(umodem, sc); 725 int rv = 0; 726 727 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 728 729 sc->sc_dying = 1; 730 731 if (sc->sc_subdev != NULL) 732 rv = config_detach(sc->sc_subdev, flags); 733 734 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 735 USBDEV(sc->sc_dev)); 736 737 return (rv); 738 } 739