umodem_common.c revision 1.24
1 /* $NetBSD: umodem_common.c,v 1.24 2016/07/07 06:55:42 msaitoh 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Comm Class spec: http://www.usb.org/developers/devclass_docs/usbccs10.pdf 35 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 36 */ 37 38 /* 39 * TODO: 40 * - Add error recovery in various places; the big problem is what 41 * to do in a callback if there is an error. 42 * - Implement a Call Device for modems without multiplexed commands. 43 * 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: umodem_common.c,v 1.24 2016/07/07 06:55:42 msaitoh Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/kernel.h> 52 #include <sys/ioctl.h> 53 #include <sys/conf.h> 54 #include <sys/tty.h> 55 #include <sys/file.h> 56 #include <sys/select.h> 57 #include <sys/proc.h> 58 #include <sys/vnode.h> 59 #include <sys/device.h> 60 #include <sys/poll.h> 61 62 #include <dev/usb/usb.h> 63 #include <dev/usb/usbcdc.h> 64 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include <dev/usb/usbdevs.h> 68 #include <dev/usb/usb_quirks.h> 69 70 #include <dev/usb/ucomvar.h> 71 #include <dev/usb/umodemvar.h> 72 73 #ifdef UMODEM_DEBUG 74 #define DPRINTFN(n, x) if (umodemdebug > (n)) printf x 75 int umodemdebug = 0; 76 #else 77 #define DPRINTFN(n, x) 78 #endif 79 #define DPRINTF(x) DPRINTFN(0, x) 80 81 /* 82 * These are the maximum number of bytes transferred per frame. 83 * If some really high speed devices should use this driver they 84 * may need to be increased, but this is good enough for normal modems. 85 * 86 * Note: increased from 64/256, to better support EVDO wireless PPP. 87 * The sizes should not be increased further, or there 88 * will be problems with contiguous storage allocation. 89 */ 90 #define UMODEMIBUFSIZE 4096 91 #define UMODEMOBUFSIZE 4096 92 93 Static usbd_status umodem_set_comm_feature(struct umodem_softc *, 94 int, int); 95 Static usbd_status umodem_set_line_coding(struct umodem_softc *, 96 usb_cdc_line_state_t *); 97 98 Static void umodem_dtr(struct umodem_softc *, int); 99 Static void umodem_rts(struct umodem_softc *, int); 100 Static void umodem_break(struct umodem_softc *, int); 101 Static void umodem_set_line_state(struct umodem_softc *); 102 Static void umodem_intr(struct usbd_xfer *, void *, usbd_status); 103 104 int 105 umodem_common_attach(device_t self, struct umodem_softc *sc, 106 struct usbif_attach_arg *uiaa, struct ucom_attach_args *ucaa) 107 { 108 struct usbd_device *dev = uiaa->uiaa_device; 109 usb_interface_descriptor_t *id; 110 usb_endpoint_descriptor_t *ed; 111 char *devinfop; 112 usbd_status err; 113 int data_ifcno; 114 int i; 115 116 sc->sc_dev = self; 117 sc->sc_udev = dev; 118 sc->sc_ctl_iface = uiaa->uiaa_iface; 119 120 aprint_naive("\n"); 121 aprint_normal("\n"); 122 123 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 124 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 125 aprint_normal_dev(self, "%s, iclass %d/%d\n", 126 devinfop, id->bInterfaceClass, id->bInterfaceSubClass); 127 usbd_devinfo_free(devinfop); 128 129 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 aprint_error_dev(self, "no pointer to data interface\n"); 137 goto bad; 138 } 139 140 aprint_normal_dev(self, 141 "data interface %d, has %sCM over data, has %sbreak\n", 142 data_ifcno, sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 143 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 144 145 /* Get the data interface too. */ 146 for (i = 0; i < uiaa->uiaa_nifaces; i++) { 147 if (uiaa->uiaa_ifaces[i] != NULL) { 148 id = usbd_get_interface_descriptor(uiaa->uiaa_ifaces[i]); 149 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 150 sc->sc_data_iface = uiaa->uiaa_ifaces[i]; 151 uiaa->uiaa_ifaces[i] = NULL; 152 } 153 } 154 } 155 if (sc->sc_data_iface == NULL) { 156 aprint_error_dev(self, "no data interface\n"); 157 goto bad; 158 } 159 160 /* 161 * Find the bulk endpoints. 162 * Iterate over all endpoints in the data interface and take note. 163 */ 164 ucaa->ucaa_bulkin = ucaa->ucaa_bulkout = -1; 165 166 id = usbd_get_interface_descriptor(sc->sc_data_iface); 167 for (i = 0; i < id->bNumEndpoints; i++) { 168 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 169 if (ed == NULL) { 170 aprint_error_dev(self, 171 "no endpoint descriptor for %d\n)", i); 172 goto bad; 173 } 174 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 175 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 176 ucaa->ucaa_bulkin = ed->bEndpointAddress; 177 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 178 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 179 ucaa->ucaa_bulkout = ed->bEndpointAddress; 180 } 181 } 182 183 if (ucaa->ucaa_bulkin == -1) { 184 aprint_error_dev(self, "Could not find data bulk in\n"); 185 goto bad; 186 } 187 if (ucaa->ucaa_bulkout == -1) { 188 aprint_error_dev(self, "Could not find data bulk out\n"); 189 goto bad; 190 } 191 192 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 193 sc->sc_cm_over_data = 1; 194 } else { 195 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 196 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 197 err = umodem_set_comm_feature(sc, 198 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 199 else 200 err = 0; 201 if (err) { 202 aprint_error_dev(self, 203 "could not set data multiplex mode\n"); 204 goto bad; 205 } 206 sc->sc_cm_over_data = 1; 207 } 208 } 209 210 /* 211 * The standard allows for notification messages (to indicate things 212 * like a modem hangup) to come in via an interrupt endpoint 213 * off of the control interface. Iterate over the endpoints on 214 * the control interface and see if there are any interrupt 215 * endpoints; if there are, then register it. 216 */ 217 218 sc->sc_ctl_notify = -1; 219 sc->sc_notify_pipe = NULL; 220 221 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 222 for (i = 0; i < id->bNumEndpoints; i++) { 223 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 224 if (ed == NULL) 225 continue; 226 227 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 228 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 229 aprint_error_dev(self, 230 "status change notification available\n"); 231 sc->sc_ctl_notify = ed->bEndpointAddress; 232 } 233 } 234 235 sc->sc_dtr = -1; 236 237 /* ucaa_bulkin, ucaa_bulkout set above */ 238 ucaa->ucaa_ibufsize = UMODEMIBUFSIZE; 239 ucaa->ucaa_obufsize = UMODEMOBUFSIZE; 240 ucaa->ucaa_ibufsizepad = UMODEMIBUFSIZE; 241 ucaa->ucaa_opkthdrlen = 0; 242 ucaa->ucaa_device = sc->sc_udev; 243 ucaa->ucaa_iface = sc->sc_data_iface; 244 ucaa->ucaa_arg = sc; 245 246 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 247 248 DPRINTF(("umodem_common_attach: sc=%p\n", sc)); 249 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, ucaa, 250 ucomprint, ucomsubmatch); 251 252 return 0; 253 254 bad: 255 sc->sc_dying = 1; 256 return 1; 257 } 258 259 int 260 umodem_open(void *addr, int portno) 261 { 262 struct umodem_softc *sc = addr; 263 int err; 264 265 DPRINTF(("umodem_open: sc=%p\n", sc)); 266 267 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 268 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 269 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 270 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 271 umodem_intr, USBD_DEFAULT_INTERVAL); 272 273 if (err) { 274 DPRINTF(("Failed to establish notify pipe: %s\n", 275 usbd_errstr(err))); 276 return EIO; 277 } 278 } 279 280 return 0; 281 } 282 283 void 284 umodem_close(void *addr, int portno) 285 { 286 struct umodem_softc *sc = addr; 287 int err; 288 289 DPRINTF(("umodem_close: sc=%p\n", sc)); 290 291 if (sc->sc_notify_pipe != NULL) { 292 err = usbd_abort_pipe(sc->sc_notify_pipe); 293 if (err) 294 printf("%s: abort notify pipe failed: %s\n", 295 device_xname(sc->sc_dev), usbd_errstr(err)); 296 err = usbd_close_pipe(sc->sc_notify_pipe); 297 if (err) 298 printf("%s: close notify pipe failed: %s\n", 299 device_xname(sc->sc_dev), usbd_errstr(err)); 300 sc->sc_notify_pipe = NULL; 301 } 302 } 303 304 Static void 305 umodem_intr(struct usbd_xfer *xfer, void *priv, 306 usbd_status status) 307 { 308 struct umodem_softc *sc = priv; 309 u_char mstatus; 310 311 if (sc->sc_dying) 312 return; 313 314 if (status != USBD_NORMAL_COMPLETION) { 315 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 316 return; 317 printf("%s: abnormal status: %s\n", device_xname(sc->sc_dev), 318 usbd_errstr(status)); 319 if (status == USBD_STALLED) 320 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe); 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 device_xname(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 device_xname(sc->sc_dev), 340 UGETW(sc->sc_notify_buf.wLength)); 341 break; 342 } 343 DPRINTF(("%s: notify bytes = %02x%02x\n", 344 device_xname(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(device_private(sc->sc_subdev)); 358 break; 359 default: 360 DPRINTF(("%s: unknown notify message: %02x\n", 361 device_xname(sc->sc_dev), 362 sc->sc_notify_buf.bNotification)); 363 break; 364 } 365 } 366 367 int 368 umodem_get_caps(struct usbd_device *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 uint32_t uq_flags; 375 376 *cm = *acm = 0; 377 uq_flags = usbd_get_quirks(dev)->uq_flags; 378 379 if (uq_flags & UQ_NO_UNION_NRM) { 380 DPRINTF(("umodem_get_caps: NO_UNION_NRM quirk - returning 0\n")); 381 return 0; 382 } 383 384 if (uq_flags & UQ_LOST_CS_DESC) 385 id = NULL; 386 387 cmd = (const usb_cdc_cm_descriptor_t *)usb_find_desc_if(dev, 388 UDESC_CS_INTERFACE, 389 UDESCSUB_CDC_CM, id); 390 if (cmd == NULL) { 391 DPRINTF(("umodem_get_caps: no CM desc\n")); 392 } else { 393 *cm = cmd->bmCapabilities; 394 } 395 396 cad = (const usb_cdc_acm_descriptor_t *)usb_find_desc_if(dev, 397 UDESC_CS_INTERFACE, 398 UDESCSUB_CDC_ACM, 399 id); 400 if (cad == NULL) { 401 DPRINTF(("umodem_get_caps: no ACM desc\n")); 402 } else { 403 *acm = cad->bmCapabilities; 404 } 405 406 cud = (const usb_cdc_union_descriptor_t *)usb_find_desc_if(dev, 407 UDESC_CS_INTERFACE, 408 UDESCSUB_CDC_UNION, 409 id); 410 if (cud == NULL) { 411 DPRINTF(("umodem_get_caps: no UNION desc\n")); 412 } 413 414 return cmd ? cmd->bDataInterface : cud ? cud->bSlaveInterface[0] : -1; 415 } 416 417 void 418 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 419 { 420 struct umodem_softc *sc = addr; 421 422 DPRINTF(("umodem_get_status:\n")); 423 424 if (lsr != NULL) 425 *lsr = sc->sc_lsr; 426 if (msr != NULL) 427 *msr = sc->sc_msr; 428 } 429 430 int 431 umodem_param(void *addr, int portno, struct termios *t) 432 { 433 struct umodem_softc *sc = addr; 434 usbd_status err; 435 usb_cdc_line_state_t ls; 436 437 DPRINTF(("umodem_param: sc=%p\n", sc)); 438 439 USETDW(ls.dwDTERate, t->c_ospeed); 440 if (ISSET(t->c_cflag, CSTOPB)) 441 ls.bCharFormat = UCDC_STOP_BIT_2; 442 else 443 ls.bCharFormat = UCDC_STOP_BIT_1; 444 if (ISSET(t->c_cflag, PARENB)) { 445 if (ISSET(t->c_cflag, PARODD)) 446 ls.bParityType = UCDC_PARITY_ODD; 447 else 448 ls.bParityType = UCDC_PARITY_EVEN; 449 } else 450 ls.bParityType = UCDC_PARITY_NONE; 451 switch (ISSET(t->c_cflag, CSIZE)) { 452 case CS5: 453 ls.bDataBits = 5; 454 break; 455 case CS6: 456 ls.bDataBits = 6; 457 break; 458 case CS7: 459 ls.bDataBits = 7; 460 break; 461 case CS8: 462 ls.bDataBits = 8; 463 break; 464 } 465 466 err = umodem_set_line_coding(sc, &ls); 467 if (err) { 468 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 469 return EPASSTHROUGH; 470 } 471 return 0; 472 } 473 474 int 475 umodem_ioctl(void *addr, int portno, u_long cmd, void *data, 476 int flag, proc_t *p) 477 { 478 struct umodem_softc *sc = addr; 479 int error = 0; 480 481 if (sc->sc_dying) 482 return EIO; 483 484 DPRINTF(("umodem_ioctl: cmd=0x%08lx\n", cmd)); 485 486 switch (cmd) { 487 case USB_GET_CM_OVER_DATA: 488 *(int *)data = sc->sc_cm_over_data; 489 break; 490 491 case USB_SET_CM_OVER_DATA: 492 if (*(int *)data != sc->sc_cm_over_data) { 493 /* XXX change it */ 494 } 495 break; 496 497 default: 498 DPRINTF(("umodem_ioctl: unknown\n")); 499 error = EPASSTHROUGH; 500 break; 501 } 502 503 return error; 504 } 505 506 void 507 umodem_dtr(struct umodem_softc *sc, int onoff) 508 { 509 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 510 511 if (sc->sc_dtr == onoff) 512 return; 513 sc->sc_dtr = onoff; 514 515 umodem_set_line_state(sc); 516 } 517 518 void 519 umodem_rts(struct umodem_softc *sc, int onoff) 520 { 521 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 522 523 if (sc->sc_rts == onoff) 524 return; 525 sc->sc_rts = onoff; 526 527 umodem_set_line_state(sc); 528 } 529 530 void 531 umodem_set_line_state(struct umodem_softc *sc) 532 { 533 usb_device_request_t req; 534 int ls; 535 536 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 537 (sc->sc_rts ? UCDC_LINE_RTS : 0); 538 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 539 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 540 USETW(req.wValue, ls); 541 USETW(req.wIndex, sc->sc_ctl_iface_no); 542 USETW(req.wLength, 0); 543 544 (void)usbd_do_request(sc->sc_udev, &req, 0); 545 546 } 547 548 void 549 umodem_break(struct umodem_softc *sc, int onoff) 550 { 551 usb_device_request_t req; 552 553 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 554 555 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 556 return; 557 558 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 559 req.bRequest = UCDC_SEND_BREAK; 560 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 561 USETW(req.wIndex, sc->sc_ctl_iface_no); 562 USETW(req.wLength, 0); 563 564 (void)usbd_do_request(sc->sc_udev, &req, 0); 565 } 566 567 void 568 umodem_set(void *addr, int portno, int reg, int onoff) 569 { 570 struct umodem_softc *sc = addr; 571 572 switch (reg) { 573 case UCOM_SET_DTR: 574 umodem_dtr(sc, onoff); 575 break; 576 case UCOM_SET_RTS: 577 umodem_rts(sc, onoff); 578 break; 579 case UCOM_SET_BREAK: 580 umodem_break(sc, onoff); 581 break; 582 default: 583 break; 584 } 585 } 586 587 usbd_status 588 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 589 { 590 usb_device_request_t req; 591 usbd_status err; 592 593 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 594 UGETDW(state->dwDTERate), state->bCharFormat, 595 state->bParityType, state->bDataBits)); 596 597 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 598 DPRINTF(("umodem_set_line_coding: already set\n")); 599 return USBD_NORMAL_COMPLETION; 600 } 601 602 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 603 req.bRequest = UCDC_SET_LINE_CODING; 604 USETW(req.wValue, 0); 605 USETW(req.wIndex, sc->sc_ctl_iface_no); 606 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 607 608 err = usbd_do_request(sc->sc_udev, &req, state); 609 if (err) { 610 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 611 usbd_errstr(err))); 612 return err; 613 } 614 615 sc->sc_line_state = *state; 616 617 return USBD_NORMAL_COMPLETION; 618 } 619 620 usbd_status 621 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 622 { 623 usb_device_request_t req; 624 usbd_status err; 625 usb_cdc_abstract_state_t ast; 626 627 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 628 state)); 629 630 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 631 req.bRequest = UCDC_SET_COMM_FEATURE; 632 USETW(req.wValue, feature); 633 USETW(req.wIndex, sc->sc_ctl_iface_no); 634 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 635 USETW(ast.wState, state); 636 637 err = usbd_do_request(sc->sc_udev, &req, &ast); 638 if (err) { 639 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 640 feature, usbd_errstr(err))); 641 return err; 642 } 643 644 return USBD_NORMAL_COMPLETION; 645 } 646 647 int 648 umodem_common_activate(struct umodem_softc *sc, enum devact act) 649 { 650 switch (act) { 651 case DVACT_DEACTIVATE: 652 sc->sc_dying = 1; 653 return 0; 654 default: 655 return EOPNOTSUPP; 656 } 657 } 658 659 void 660 umodem_common_childdet(struct umodem_softc *sc, device_t child) 661 { 662 KASSERT(sc->sc_subdev == child); 663 sc->sc_subdev = NULL; 664 } 665 666 int 667 umodem_common_detach(struct umodem_softc *sc, int flags) 668 { 669 int rv = 0; 670 671 DPRINTF(("umodem_common_detach: sc=%p flags=%d\n", sc, flags)); 672 673 sc->sc_dying = 1; 674 675 if (sc->sc_subdev != NULL) 676 rv = config_detach(sc->sc_subdev, flags); 677 678 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 679 680 return rv; 681 } 682
Indexes created Thu Sep 25 02:09:54 GMT 2025