umodem_common.c revision 1.4
1 /* $NetBSD: umodem_common.c,v 1.4 2005/05/11 10:02:28 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 (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 1.4 2005/05/11 10:02:28 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 #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 *devinfop; 116 usbd_status err; 117 int data_ifcno; 118 int i; 119 120 devinfop = usbd_devinfo_alloc(uaa->device, 0); 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 devinfop, id->bInterfaceClass, id->bInterfaceSubClass); 129 usbd_devinfo_free(devinfop); 130 sc->sc_ctl_iface_no = id->bInterfaceNumber; 131 132 /* Get the data interface no. */ 133 sc->sc_data_iface_no = data_ifcno = 134 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap, id); 135 136 if (data_ifcno == -1) { 137 printf("%s: no pointer to data interface\n", 138 USBDEVNAME(sc->sc_dev)); 139 goto bad; 140 } 141 142 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 143 USBDEVNAME(sc->sc_dev), data_ifcno, 144 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 145 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 146 147 /* Get the data interface too. */ 148 for (i = 0; i < uaa->nifaces; i++) { 149 if (uaa->ifaces[i] != NULL) { 150 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 151 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 152 sc->sc_data_iface = uaa->ifaces[i]; 153 uaa->ifaces[i] = NULL; 154 } 155 } 156 } 157 if (sc->sc_data_iface == NULL) { 158 printf("%s: no data interface\n", USBDEVNAME(sc->sc_dev)); 159 goto bad; 160 } 161 162 /* 163 * Find the bulk endpoints. 164 * Iterate over all endpoints in the data interface and take note. 165 */ 166 uca->bulkin = uca->bulkout = -1; 167 168 id = usbd_get_interface_descriptor(sc->sc_data_iface); 169 for (i = 0; i < id->bNumEndpoints; i++) { 170 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 171 if (ed == NULL) { 172 printf("%s: no endpoint descriptor for %d\n", 173 USBDEVNAME(sc->sc_dev), i); 174 goto bad; 175 } 176 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 177 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 178 uca->bulkin = ed->bEndpointAddress; 179 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 180 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 181 uca->bulkout = ed->bEndpointAddress; 182 } 183 } 184 185 if (uca->bulkin == -1) { 186 printf("%s: Could not find data bulk in\n", 187 USBDEVNAME(sc->sc_dev)); 188 goto bad; 189 } 190 if (uca->bulkout == -1) { 191 printf("%s: Could not find data bulk out\n", 192 USBDEVNAME(sc->sc_dev)); 193 goto bad; 194 } 195 196 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 197 sc->sc_cm_over_data = 1; 198 } else { 199 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 200 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 201 err = umodem_set_comm_feature(sc, 202 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 203 else 204 err = 0; 205 if (err) { 206 printf("%s: could not set data multiplex mode\n", 207 USBDEVNAME(sc->sc_dev)); 208 goto bad; 209 } 210 sc->sc_cm_over_data = 1; 211 } 212 } 213 214 /* 215 * The standard allows for notification messages (to indicate things 216 * like a modem hangup) to come in via an interrupt endpoint 217 * off of the control interface. Iterate over the endpoints on 218 * the control interface and see if there are any interrupt 219 * endpoints; if there are, then register it. 220 */ 221 222 sc->sc_ctl_notify = -1; 223 sc->sc_notify_pipe = NULL; 224 225 for (i = 0; i < id->bNumEndpoints; i++) { 226 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 227 if (ed == NULL) 228 continue; 229 230 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 231 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 232 printf("%s: status change notification available\n", 233 USBDEVNAME(sc->sc_dev)); 234 sc->sc_ctl_notify = ed->bEndpointAddress; 235 } 236 } 237 238 sc->sc_dtr = -1; 239 240 /* bulkin, bulkout set above */ 241 uca->ibufsize = UMODEMIBUFSIZE; 242 uca->obufsize = UMODEMOBUFSIZE; 243 uca->ibufsizepad = UMODEMIBUFSIZE; 244 uca->opkthdrlen = 0; 245 uca->device = sc->sc_udev; 246 uca->iface = sc->sc_data_iface; 247 uca->arg = sc; 248 249 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 250 USBDEV(sc->sc_dev)); 251 252 DPRINTF(("umodem_common_attach: sc=%p\n", sc)); 253 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, uca, 254 ucomprint, ucomsubmatch); 255 256 return 0; 257 258 bad: 259 sc->sc_dying = 1; 260 return 1; 261 } 262 263 int 264 umodem_open(void *addr, int portno) 265 { 266 struct umodem_softc *sc = addr; 267 int err; 268 269 DPRINTF(("umodem_open: sc=%p\n", sc)); 270 271 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 272 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 273 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 274 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 275 umodem_intr, USBD_DEFAULT_INTERVAL); 276 277 if (err) { 278 DPRINTF(("Failed to establish notify pipe: %s\n", 279 usbd_errstr(err))); 280 return EIO; 281 } 282 } 283 284 return 0; 285 } 286 287 void 288 umodem_close(void *addr, int portno) 289 { 290 struct umodem_softc *sc = addr; 291 int err; 292 293 DPRINTF(("umodem_close: sc=%p\n", sc)); 294 295 if (sc->sc_notify_pipe != NULL) { 296 err = usbd_abort_pipe(sc->sc_notify_pipe); 297 if (err) 298 printf("%s: abort notify pipe failed: %s\n", 299 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 300 err = usbd_close_pipe(sc->sc_notify_pipe); 301 if (err) 302 printf("%s: close notify pipe failed: %s\n", 303 USBDEVNAME(sc->sc_dev), usbd_errstr(err)); 304 sc->sc_notify_pipe = NULL; 305 } 306 } 307 308 Static void 309 umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 310 { 311 struct umodem_softc *sc = priv; 312 u_char mstatus; 313 314 if (sc->sc_dying) 315 return; 316 317 if (status != USBD_NORMAL_COMPLETION) { 318 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 319 return; 320 printf("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev), 321 usbd_errstr(status)); 322 return; 323 } 324 325 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 326 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 327 USBDEVNAME(sc->sc_dev), 328 sc->sc_notify_buf.bmRequestType)); 329 return; 330 } 331 332 switch (sc->sc_notify_buf.bNotification) { 333 case UCDC_N_SERIAL_STATE: 334 /* 335 * Set the serial state in ucom driver based on 336 * the bits from the notify message 337 */ 338 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 339 printf("%s: Invalid notification length! (%d)\n", 340 USBDEVNAME(sc->sc_dev), 341 UGETW(sc->sc_notify_buf.wLength)); 342 break; 343 } 344 DPRINTF(("%s: notify bytes = %02x%02x\n", 345 USBDEVNAME(sc->sc_dev), 346 sc->sc_notify_buf.data[0], 347 sc->sc_notify_buf.data[1])); 348 /* Currently, lsr is always zero. */ 349 sc->sc_lsr = sc->sc_msr = 0; 350 mstatus = sc->sc_notify_buf.data[0]; 351 352 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 353 sc->sc_msr |= UMSR_RI; 354 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 355 sc->sc_msr |= UMSR_DSR; 356 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 357 sc->sc_msr |= UMSR_DCD; 358 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 359 break; 360 default: 361 DPRINTF(("%s: unknown notify message: %02x\n", 362 USBDEVNAME(sc->sc_dev), 363 sc->sc_notify_buf.bNotification)); 364 break; 365 } 366 } 367 368 int 369 umodem_get_caps(usbd_device_handle dev, int *cm, int *acm, 370 usb_interface_descriptor_t *id) 371 { 372 const usb_cdc_cm_descriptor_t *cmd; 373 const usb_cdc_acm_descriptor_t *cad; 374 const usb_cdc_union_descriptor_t *cud; 375 376 *cm = *acm = 0; 377 378 cmd = (usb_cdc_cm_descriptor_t *)usb_find_desc_if(dev, 379 UDESC_CS_INTERFACE, 380 UDESCSUB_CDC_CM, id); 381 if (cmd == NULL) { 382 DPRINTF(("umodem_get_caps: no CM desc\n")); 383 } else { 384 *cm = cmd->bmCapabilities; 385 } 386 387 cad = (usb_cdc_acm_descriptor_t *)usb_find_desc_if(dev, 388 UDESC_CS_INTERFACE, 389 UDESCSUB_CDC_ACM, 390 id); 391 if (cad == NULL) { 392 DPRINTF(("umodem_get_caps: no ACM desc\n")); 393 } else { 394 *acm = cad->bmCapabilities; 395 } 396 397 cud = (usb_cdc_union_descriptor_t *)usb_find_desc_if(dev, 398 UDESC_CS_INTERFACE, 399 UDESCSUB_CDC_UNION, 400 id); 401 if (cud == NULL) { 402 DPRINTF(("umodem_get_caps: no UNION desc\n")); 403 } 404 405 return cmd ? cmd->bDataInterface : cud ? cud->bSlaveInterface[0] : -1; 406 } 407 408 void 409 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 410 { 411 struct umodem_softc *sc = addr; 412 413 DPRINTF(("umodem_get_status:\n")); 414 415 if (lsr != NULL) 416 *lsr = sc->sc_lsr; 417 if (msr != NULL) 418 *msr = sc->sc_msr; 419 } 420 421 int 422 umodem_param(void *addr, int portno, struct termios *t) 423 { 424 struct umodem_softc *sc = addr; 425 usbd_status err; 426 usb_cdc_line_state_t ls; 427 428 DPRINTF(("umodem_param: sc=%p\n", sc)); 429 430 USETDW(ls.dwDTERate, t->c_ospeed); 431 if (ISSET(t->c_cflag, CSTOPB)) 432 ls.bCharFormat = UCDC_STOP_BIT_2; 433 else 434 ls.bCharFormat = UCDC_STOP_BIT_1; 435 if (ISSET(t->c_cflag, PARENB)) { 436 if (ISSET(t->c_cflag, PARODD)) 437 ls.bParityType = UCDC_PARITY_ODD; 438 else 439 ls.bParityType = UCDC_PARITY_EVEN; 440 } else 441 ls.bParityType = UCDC_PARITY_NONE; 442 switch (ISSET(t->c_cflag, CSIZE)) { 443 case CS5: 444 ls.bDataBits = 5; 445 break; 446 case CS6: 447 ls.bDataBits = 6; 448 break; 449 case CS7: 450 ls.bDataBits = 7; 451 break; 452 case CS8: 453 ls.bDataBits = 8; 454 break; 455 } 456 457 err = umodem_set_line_coding(sc, &ls); 458 if (err) { 459 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 460 return (EPASSTHROUGH); 461 } 462 return (0); 463 } 464 465 int 466 umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag, 467 usb_proc_ptr p) 468 { 469 struct umodem_softc *sc = addr; 470 int error = 0; 471 472 if (sc->sc_dying) 473 return (EIO); 474 475 DPRINTF(("umodem_ioctl: cmd=0x%08lx\n", cmd)); 476 477 switch (cmd) { 478 case USB_GET_CM_OVER_DATA: 479 *(int *)data = sc->sc_cm_over_data; 480 break; 481 482 case USB_SET_CM_OVER_DATA: 483 if (*(int *)data != sc->sc_cm_over_data) { 484 /* XXX change it */ 485 } 486 break; 487 488 default: 489 DPRINTF(("umodem_ioctl: unknown\n")); 490 error = EPASSTHROUGH; 491 break; 492 } 493 494 return (error); 495 } 496 497 void 498 umodem_dtr(struct umodem_softc *sc, int onoff) 499 { 500 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 501 502 if (sc->sc_dtr == onoff) 503 return; 504 sc->sc_dtr = onoff; 505 506 umodem_set_line_state(sc); 507 } 508 509 void 510 umodem_rts(struct umodem_softc *sc, int onoff) 511 { 512 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 513 514 if (sc->sc_rts == onoff) 515 return; 516 sc->sc_rts = onoff; 517 518 umodem_set_line_state(sc); 519 } 520 521 void 522 umodem_set_line_state(struct umodem_softc *sc) 523 { 524 usb_device_request_t req; 525 int ls; 526 527 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 528 (sc->sc_rts ? UCDC_LINE_RTS : 0); 529 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 530 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 531 USETW(req.wValue, ls); 532 USETW(req.wIndex, sc->sc_ctl_iface_no); 533 USETW(req.wLength, 0); 534 535 (void)usbd_do_request(sc->sc_udev, &req, 0); 536 537 } 538 539 void 540 umodem_break(struct umodem_softc *sc, int onoff) 541 { 542 usb_device_request_t req; 543 544 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 545 546 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 547 return; 548 549 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 550 req.bRequest = UCDC_SEND_BREAK; 551 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 552 USETW(req.wIndex, sc->sc_ctl_iface_no); 553 USETW(req.wLength, 0); 554 555 (void)usbd_do_request(sc->sc_udev, &req, 0); 556 } 557 558 void 559 umodem_set(void *addr, int portno, int reg, int onoff) 560 { 561 struct umodem_softc *sc = addr; 562 563 switch (reg) { 564 case UCOM_SET_DTR: 565 umodem_dtr(sc, onoff); 566 break; 567 case UCOM_SET_RTS: 568 umodem_rts(sc, onoff); 569 break; 570 case UCOM_SET_BREAK: 571 umodem_break(sc, onoff); 572 break; 573 default: 574 break; 575 } 576 } 577 578 usbd_status 579 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 580 { 581 usb_device_request_t req; 582 usbd_status err; 583 584 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 585 UGETDW(state->dwDTERate), state->bCharFormat, 586 state->bParityType, state->bDataBits)); 587 588 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 589 DPRINTF(("umodem_set_line_coding: already set\n")); 590 return (USBD_NORMAL_COMPLETION); 591 } 592 593 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 594 req.bRequest = UCDC_SET_LINE_CODING; 595 USETW(req.wValue, 0); 596 USETW(req.wIndex, sc->sc_ctl_iface_no); 597 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 598 599 err = usbd_do_request(sc->sc_udev, &req, state); 600 if (err) { 601 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 602 usbd_errstr(err))); 603 return (err); 604 } 605 606 sc->sc_line_state = *state; 607 608 return (USBD_NORMAL_COMPLETION); 609 } 610 611 usbd_status 612 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 613 { 614 usb_device_request_t req; 615 usbd_status err; 616 usb_cdc_abstract_state_t ast; 617 618 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 619 state)); 620 621 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 622 req.bRequest = UCDC_SET_COMM_FEATURE; 623 USETW(req.wValue, feature); 624 USETW(req.wIndex, sc->sc_ctl_iface_no); 625 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 626 USETW(ast.wState, state); 627 628 err = usbd_do_request(sc->sc_udev, &req, &ast); 629 if (err) { 630 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 631 feature, usbd_errstr(err))); 632 return (err); 633 } 634 635 return (USBD_NORMAL_COMPLETION); 636 } 637 638 int 639 umodem_common_activate(struct umodem_softc *sc, enum devact act) 640 { 641 int rv = 0; 642 643 switch (act) { 644 case DVACT_ACTIVATE: 645 return (EOPNOTSUPP); 646 647 case DVACT_DEACTIVATE: 648 sc->sc_dying = 1; 649 if (sc->sc_subdev) 650 rv = config_deactivate(sc->sc_subdev); 651 break; 652 } 653 return (rv); 654 } 655 656 int 657 umodem_common_detach(struct umodem_softc *sc, int flags) 658 { 659 int rv = 0; 660 661 DPRINTF(("umodem_common_detach: sc=%p flags=%d\n", sc, flags)); 662 663 sc->sc_dying = 1; 664 665 if (sc->sc_subdev != NULL) 666 rv = config_detach(sc->sc_subdev, flags); 667 668 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 669 USBDEV(sc->sc_dev)); 670 671 return (rv); 672 } 673
Indexes created Fri Sep 26 20:09:58 GMT 2025