umodem_common.c revision 1.3.2.4
1 /* $NetBSD: umodem_common.c,v 1.3.2.4 2005/04/17 10:30:40 tron 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 (at) 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_common.c,v 1.3.2.4 2005/04/17 10:30:40 tron 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 #include <dev/usb/umodemvar.h> 80 81 #ifdef UMODEM_DEBUG 82 #define DPRINTFN(n, x) if (umodemdebug > (n)) logprintf x 83 int umodemdebug = 0; 84 #else 85 #define DPRINTFN(n, x) 86 #endif 87 #define DPRINTF(x) DPRINTFN(0, x) 88 89 /* 90 * These are the maximum number of bytes transferred per frame. 91 * If some really high speed devices should use this driver they 92 * may need to be increased, but this is good enough for normal modems. 93 */ 94 #define UMODEMIBUFSIZE 64 95 #define UMODEMOBUFSIZE 256 96 97 Static usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 98 int feature, int state); 99 Static usbd_status umodem_set_line_coding(struct umodem_softc *sc, 100 usb_cdc_line_state_t *state); 101 102 Static void umodem_dtr(struct umodem_softc *, int); 103 Static void umodem_rts(struct umodem_softc *, int); 104 Static void umodem_break(struct umodem_softc *, int); 105 Static void umodem_set_line_state(struct umodem_softc *); 106 Static void umodem_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); 107 108 int 109 umodem_common_attach(device_ptr_t self, struct umodem_softc *sc, 110 struct usb_attach_arg *uaa, struct ucom_attach_args *uca) 111 { 112 usbd_device_handle dev = uaa->device; 113 usb_interface_descriptor_t *id; 114 usb_endpoint_descriptor_t *ed; 115 char devinfo[1024]; 116 usbd_status err; 117 int data_ifcno; 118 int i; 119 120 usbd_devinfo(uaa->device, 0, devinfo, sizeof(devinfo)); 121 USB_ATTACH_SETUP; 122 123 sc->sc_udev = dev; 124 sc->sc_ctl_iface = uaa->iface; 125 126 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 127 printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev), 128 devinfo, id->bInterfaceClass, id->bInterfaceSubClass); 129 sc->sc_ctl_iface_no = id->bInterfaceNumber; 130 131 /* Get the data interface no. */ 132 sc->sc_data_iface_no = data_ifcno = 133 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap, id); 134 135 if (data_ifcno == -1) { 136 printf("%s: no pointer to data interface\n", 137 USBDEVNAME(sc->sc_dev)); 138 goto bad; 139 } 140 141 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 142 USBDEVNAME(sc->sc_dev), data_ifcno, 143 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 144 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 145 146 /* Get the data interface too. */ 147 for (i = 0; i < uaa->nifaces; i++) { 148 if (uaa->ifaces[i] != NULL) { 149 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 150 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 151 sc->sc_data_iface = uaa->ifaces[i]; 152 uaa->ifaces[i] = NULL; 153 } 154 } 155 } 156 if (sc->sc_data_iface == NULL) { 157 printf("%s: no data interface\n", USBDEVNAME(sc->sc_dev)); 158 goto bad; 159 } 160 161 /* 162 * Find the bulk endpoints. 163 * Iterate over all endpoints in the data interface and take note. 164 */ 165 uca->bulkin = uca->bulkout = -1; 166 167 id = usbd_get_interface_descriptor(sc->sc_data_iface); 168 for (i = 0; i < id->bNumEndpoints; i++) { 169 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 170 if (ed == NULL) { 171 printf("%s: no endpoint descriptor for %d\n", 172 USBDEVNAME(sc->sc_dev), i); 173 goto bad; 174 } 175 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 176 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 177 uca->bulkin = ed->bEndpointAddress; 178 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 179 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 180 uca->bulkout = ed->bEndpointAddress; 181 } 182 } 183 184 if (uca->bulkin == -1) { 185 printf("%s: Could not find data bulk in\n", 186 USBDEVNAME(sc->sc_dev)); 187 goto bad; 188 } 189 if (uca->bulkout == -1) { 190 printf("%s: Could not find data bulk out\n", 191 USBDEVNAME(sc->sc_dev)); 192 goto bad; 193 } 194 195 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 196 sc->sc_cm_over_data = 1; 197 } else { 198 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 199 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 200 err = umodem_set_comm_feature(sc, 201 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 202 else 203 err = 0; 204 if (err) { 205 printf("%s: could not set data multiplex mode\n", 206 USBDEVNAME(sc->sc_dev)); 207 goto bad; 208 } 209 sc->sc_cm_over_data = 1; 210 } 211 } 212 213 /* 214 * The standard allows for notification messages (to indicate things 215 * like a modem hangup) to come in via an interrupt endpoint 216 * off of the control interface. Iterate over the endpoints on 217 * the control interface and see if there are any interrupt 218 * endpoints; if there are, then register it. 219 */ 220 221 sc->sc_ctl_notify = -1; 222 sc->sc_notify_pipe = NULL; 223 224 for (i = 0; i < id->bNumEndpoints; i++) { 225 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 226 if (ed == NULL) 227 continue; 228 229 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 230 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 231 printf("%s: status change notification available\n", 232 USBDEVNAME(sc->sc_dev)); 233 sc->sc_ctl_notify = ed->bEndpointAddress; 234 } 235 } 236 237 sc->sc_dtr = -1; 238 239 /* bulkin, bulkout set above */ 240 uca->ibufsize = UMODEMIBUFSIZE; 241 uca->obufsize = UMODEMOBUFSIZE; 242 uca->ibufsizepad = UMODEMIBUFSIZE; 243 uca->opkthdrlen = 0; 244 uca->device = sc->sc_udev; 245 uca->iface = sc->sc_data_iface; 246 uca->arg = sc; 247 248 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 249 USBDEV(sc->sc_dev)); 250 251 DPRINTF(("umodem_common_attach: sc=%p\n", sc)); 252 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, uca, 253 ucomprint, ucomsubmatch); 254 255 return 0; 256 257 bad: 258 sc->sc_dying = 1; 259 return 1; 260 } 261 262 int 263 umodem_open(void *addr, int portno) 264 { 265 struct umodem_softc *sc = addr; 266 int err; 267 268 DPRINTF(("umodem_open: sc=%p\n", sc)); 269 270 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 271 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 272 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 273 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 274 umodem_intr, USBD_DEFAULT_INTERVAL); 275 276 if (err) { 277 DPRINTF(("Failed to establish notify pipe: %s\n", 278 usbd_errstr(err))); 279 return EIO; 280 } 281 } 282 283 return 0; 284 } 285 286 void 287 umodem_close(void *addr, int portno) 288 { 289 struct umodem_softc *sc = addr; 290 int err; 291 292 DPRINTF(("umodem_close: sc=%p\n", sc)); 293 294 if (sc->sc_notify_pipe != NULL) { 295 err = usbd_abort_pipe(sc->sc_notify_pipe); 296 if (err) 297 printf("%s: abort notify pipe failed: %s\n", 298 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 299 err = usbd_close_pipe(sc->sc_notify_pipe); 300 if (err) 301 printf("%s: close notify pipe failed: %s\n", 302 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 303 sc->sc_notify_pipe = NULL; 304 } 305 } 306 307 Static void 308 umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 309 { 310 struct umodem_softc *sc = priv; 311 u_char mstatus; 312 313 if (sc->sc_dying) 314 return; 315 316 if (status != USBD_NORMAL_COMPLETION) { 317 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 318 return; 319 printf("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 320 usbd_errstr(status)); 321 return; 322 } 323 324 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 325 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 326 USBDEVNAME(sc->sc_dev), 327 sc->sc_notify_buf.bmRequestType)); 328 return; 329 } 330 331 switch (sc->sc_notify_buf.bNotification) { 332 case UCDC_N_SERIAL_STATE: 333 /* 334 * Set the serial state in ucom driver based on 335 * the bits from the notify message 336 */ 337 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 338 printf("%s: Invalid notification length! (%d)\n", 339 USBDEVNAME(sc->sc_dev), 340 UGETW(sc->sc_notify_buf.wLength)); 341 break; 342 } 343 DPRINTF(("%s: notify bytes = %02x%02x\n", 344 USBDEVNAME(sc->sc_dev), 345 sc->sc_notify_buf.data[0], 346 sc->sc_notify_buf.data[1])); 347 /* Currently, lsr is always zero. */ 348 sc->sc_lsr = sc->sc_msr = 0; 349 mstatus = sc->sc_notify_buf.data[0]; 350 351 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 352 sc->sc_msr |= UMSR_RI; 353 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 354 sc->sc_msr |= UMSR_DSR; 355 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 356 sc->sc_msr |= UMSR_DCD; 357 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 358 break; 359 default: 360 DPRINTF(("%s: unknown notify message: %02x\n", 361 USBDEVNAME(sc->sc_dev), 362 sc->sc_notify_buf.bNotification)); 363 break; 364 } 365 } 366 367 int 368 umodem_get_caps(usbd_device_handle dev, int *cm, int *acm, 369 usb_interface_descriptor_t *id) 370 { 371 const usb_cdc_cm_descriptor_t *cmd; 372 const usb_cdc_acm_descriptor_t *cad; 373 const usb_cdc_union_descriptor_t *cud; 374 375 *cm = *acm = 0; 376 377 cmd = (usb_cdc_cm_descriptor_t *)usb_find_desc_if(dev, 378 UDESC_CS_INTERFACE, 379 UDESCSUB_CDC_CM, id); 380 if (cmd == NULL) { 381 DPRINTF(("umodem_get_caps: no CM desc\n")); 382 } else { 383 *cm = cmd->bmCapabilities; 384 } 385 386 cad = (usb_cdc_acm_descriptor_t *)usb_find_desc_if(dev, 387 UDESC_CS_INTERFACE, 388 UDESCSUB_CDC_ACM, 389 id); 390 if (cad == NULL) { 391 DPRINTF(("umodem_get_caps: no ACM desc\n")); 392 } else { 393 *acm = cad->bmCapabilities; 394 } 395 396 cud = (usb_cdc_union_descriptor_t *)usb_find_desc_if(dev, 397 UDESC_CS_INTERFACE, 398 UDESCSUB_CDC_UNION, 399 id); 400 if (cud == NULL) { 401 DPRINTF(("umodem_get_caps: no UNION desc\n")); 402 } 403 404 return cmd ? cmd->bDataInterface : cud ? cud->bSlaveInterface[0] : -1; 405 } 406 407 void 408 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 409 { 410 struct umodem_softc *sc = addr; 411 412 DPRINTF(("umodem_get_status:\n")); 413 414 if (lsr != NULL) 415 *lsr = sc->sc_lsr; 416 if (msr != NULL) 417 *msr = sc->sc_msr; 418 } 419 420 int 421 umodem_param(void *addr, int portno, struct termios *t) 422 { 423 struct umodem_softc *sc = addr; 424 usbd_status err; 425 usb_cdc_line_state_t ls; 426 427 DPRINTF(("umodem_param: sc=%p\n", sc)); 428 429 USETDW(ls.dwDTERate, t->c_ospeed); 430 if (ISSET(t->c_cflag, CSTOPB)) 431 ls.bCharFormat = UCDC_STOP_BIT_2; 432 else 433 ls.bCharFormat = UCDC_STOP_BIT_1; 434 if (ISSET(t->c_cflag, PARENB)) { 435 if (ISSET(t->c_cflag, PARODD)) 436 ls.bParityType = UCDC_PARITY_ODD; 437 else 438 ls.bParityType = UCDC_PARITY_EVEN; 439 } else 440 ls.bParityType = UCDC_PARITY_NONE; 441 switch (ISSET(t->c_cflag, CSIZE)) { 442 case CS5: 443 ls.bDataBits = 5; 444 break; 445 case CS6: 446 ls.bDataBits = 6; 447 break; 448 case CS7: 449 ls.bDataBits = 7; 450 break; 451 case CS8: 452 ls.bDataBits = 8; 453 break; 454 } 455 456 err = umodem_set_line_coding(sc, &ls); 457 if (err) { 458 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 459 return (EPASSTHROUGH); 460 } 461 return (0); 462 } 463 464 int 465 umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag, 466 usb_proc_ptr p) 467 { 468 struct umodem_softc *sc = addr; 469 int error = 0; 470 471 if (sc->sc_dying) 472 return (EIO); 473 474 DPRINTF(("umodem_ioctl: cmd=0x%08lx\n", cmd)); 475 476 switch (cmd) { 477 case USB_GET_CM_OVER_DATA: 478 *(int *)data = sc->sc_cm_over_data; 479 break; 480 481 case USB_SET_CM_OVER_DATA: 482 if (*(int *)data != sc->sc_cm_over_data) { 483 /* XXX change it */ 484 } 485 break; 486 487 default: 488 DPRINTF(("umodem_ioctl: unknown\n")); 489 error = EPASSTHROUGH; 490 break; 491 } 492 493 return (error); 494 } 495 496 void 497 umodem_dtr(struct umodem_softc *sc, int onoff) 498 { 499 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 500 501 if (sc->sc_dtr == onoff) 502 return; 503 sc->sc_dtr = onoff; 504 505 umodem_set_line_state(sc); 506 } 507 508 void 509 umodem_rts(struct umodem_softc *sc, int onoff) 510 { 511 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 512 513 if (sc->sc_rts == onoff) 514 return; 515 sc->sc_rts = onoff; 516 517 umodem_set_line_state(sc); 518 } 519 520 void 521 umodem_set_line_state(struct umodem_softc *sc) 522 { 523 usb_device_request_t req; 524 int ls; 525 526 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 527 (sc->sc_rts ? UCDC_LINE_RTS : 0); 528 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 529 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 530 USETW(req.wValue, ls); 531 USETW(req.wIndex, sc->sc_ctl_iface_no); 532 USETW(req.wLength, 0); 533 534 (void)usbd_do_request(sc->sc_udev, &req, 0); 535 536 } 537 538 void 539 umodem_break(struct umodem_softc *sc, int onoff) 540 { 541 usb_device_request_t req; 542 543 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 544 545 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 546 return; 547 548 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 549 req.bRequest = UCDC_SEND_BREAK; 550 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 551 USETW(req.wIndex, sc->sc_ctl_iface_no); 552 USETW(req.wLength, 0); 553 554 (void)usbd_do_request(sc->sc_udev, &req, 0); 555 } 556 557 void 558 umodem_set(void *addr, int portno, int reg, int onoff) 559 { 560 struct umodem_softc *sc = addr; 561 562 switch (reg) { 563 case UCOM_SET_DTR: 564 umodem_dtr(sc, onoff); 565 break; 566 case UCOM_SET_RTS: 567 umodem_rts(sc, onoff); 568 break; 569 case UCOM_SET_BREAK: 570 umodem_break(sc, onoff); 571 break; 572 default: 573 break; 574 } 575 } 576 577 usbd_status 578 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 579 { 580 usb_device_request_t req; 581 usbd_status err; 582 583 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 584 UGETDW(state->dwDTERate), state->bCharFormat, 585 state->bParityType, state->bDataBits)); 586 587 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 588 DPRINTF(("umodem_set_line_coding: already set\n")); 589 return (USBD_NORMAL_COMPLETION); 590 } 591 592 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 593 req.bRequest = UCDC_SET_LINE_CODING; 594 USETW(req.wValue, 0); 595 USETW(req.wIndex, sc->sc_ctl_iface_no); 596 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 597 598 err = usbd_do_request(sc->sc_udev, &req, state); 599 if (err) { 600 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 601 usbd_errstr(err))); 602 return (err); 603 } 604 605 sc->sc_line_state = *state; 606 607 return (USBD_NORMAL_COMPLETION); 608 } 609 610 usbd_status 611 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 612 { 613 usb_device_request_t req; 614 usbd_status err; 615 usb_cdc_abstract_state_t ast; 616 617 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 618 state)); 619 620 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 621 req.bRequest = UCDC_SET_COMM_FEATURE; 622 USETW(req.wValue, feature); 623 USETW(req.wIndex, sc->sc_ctl_iface_no); 624 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 625 USETW(ast.wState, state); 626 627 err = usbd_do_request(sc->sc_udev, &req, &ast); 628 if (err) { 629 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 630 feature, usbd_errstr(err))); 631 return (err); 632 } 633 634 return (USBD_NORMAL_COMPLETION); 635 } 636 637 int 638 umodem_common_activate(struct umodem_softc *sc, enum devact act) 639 { 640 int rv = 0; 641 642 switch (act) { 643 case DVACT_ACTIVATE: 644 return (EOPNOTSUPP); 645 646 case DVACT_DEACTIVATE: 647 sc->sc_dying = 1; 648 if (sc->sc_subdev) 649 rv = config_deactivate(sc->sc_subdev); 650 break; 651 } 652 return (rv); 653 } 654 655 int 656 umodem_common_detach(struct umodem_softc *sc, int flags) 657 { 658 int rv = 0; 659 660 DPRINTF(("umodem_common_detach: sc=%p flags=%d\n", sc, flags)); 661 662 sc->sc_dying = 1; 663 664 if (sc->sc_subdev != NULL) 665 rv = config_detach(sc->sc_subdev, flags); 666 667 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 668 USBDEV(sc->sc_dev)); 669 670 return (rv); 671 } 672
Indexes created Mon Sep 29 21:09:56 GMT 2025