umodem_common.c revision 1.29
1 /* $NetBSD: umodem_common.c,v 1.29 2019/05/06 23:47:39 mrg 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 1.29 2019/05/06 23:47:39 mrg Exp $"); 48 49 #ifdef _KERNEL_OPT 50 #include "opt_usb.h" 51 #endif 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/kernel.h> 56 #include <sys/ioctl.h> 57 #include <sys/conf.h> 58 #include <sys/tty.h> 59 #include <sys/file.h> 60 #include <sys/select.h> 61 #include <sys/proc.h> 62 #include <sys/vnode.h> 63 #include <sys/device.h> 64 #include <sys/poll.h> 65 66 #include <dev/usb/usb.h> 67 #include <dev/usb/usbcdc.h> 68 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include <dev/usb/usbdevs.h> 72 #include <dev/usb/usb_quirks.h> 73 74 #include <dev/usb/ucomvar.h> 75 #include <dev/usb/umodemvar.h> 76 77 #ifdef UMODEM_DEBUG 78 #define DPRINTFN(n, x) if (umodemdebug > (n)) printf x 79 int umodemdebug = 0; 80 #else 81 #define DPRINTFN(n, x) 82 #endif 83 #define DPRINTF(x) DPRINTFN(0, x) 84 85 /* 86 * These are the maximum number of bytes transferred per frame. 87 * If some really high speed devices should use this driver they 88 * may need to be increased, but this is good enough for normal modems. 89 * 90 * Note: increased from 64/256, to better support EVDO wireless PPP. 91 * The sizes should not be increased further, or there 92 * will be problems with contiguous storage allocation. 93 */ 94 #define UMODEMIBUFSIZE 4096 95 #define UMODEMOBUFSIZE 4096 96 97 static usbd_status umodem_set_comm_feature(struct umodem_softc *, 98 int, int); 99 static usbd_status umodem_set_line_coding(struct umodem_softc *, 100 usb_cdc_line_state_t *); 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(struct usbd_xfer *, void *, usbd_status); 107 108 int 109 umodem_common_attach(device_t self, struct umodem_softc *sc, 110 struct usbif_attach_arg *uiaa, struct ucom_attach_args *ucaa) 111 { 112 struct usbd_device *dev = uiaa->uiaa_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 sc->sc_dev = self; 121 sc->sc_udev = dev; 122 sc->sc_ctl_iface = uiaa->uiaa_iface; 123 sc->sc_dying = false; 124 125 aprint_naive("\n"); 126 aprint_normal("\n"); 127 128 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 129 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 130 aprint_normal_dev(self, "%s, iclass %d/%d\n", 131 devinfop, id->bInterfaceClass, id->bInterfaceSubClass); 132 usbd_devinfo_free(devinfop); 133 134 sc->sc_ctl_iface_no = id->bInterfaceNumber; 135 136 /* Get the data interface no. */ 137 sc->sc_data_iface_no = data_ifcno = 138 umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap, id); 139 140 if (data_ifcno == -1) { 141 aprint_error_dev(self, "no pointer to data interface\n"); 142 goto bad; 143 } 144 145 aprint_normal_dev(self, 146 "data interface %d, has %sCM over data, has %sbreak\n", 147 data_ifcno, sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 148 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 149 150 /* Get the data interface too. */ 151 for (i = 0; i < uiaa->uiaa_nifaces; i++) { 152 if (uiaa->uiaa_ifaces[i] != NULL) { 153 id = usbd_get_interface_descriptor(uiaa->uiaa_ifaces[i]); 154 if (id != NULL && id->bInterfaceNumber == data_ifcno) { 155 sc->sc_data_iface = uiaa->uiaa_ifaces[i]; 156 uiaa->uiaa_ifaces[i] = NULL; 157 } 158 } 159 } 160 if (sc->sc_data_iface == NULL) { 161 aprint_error_dev(self, "no data interface\n"); 162 goto bad; 163 } 164 165 /* 166 * Find the bulk endpoints. 167 * Iterate over all endpoints in the data interface and take note. 168 */ 169 ucaa->ucaa_bulkin = ucaa->ucaa_bulkout = -1; 170 171 id = usbd_get_interface_descriptor(sc->sc_data_iface); 172 for (i = 0; i < id->bNumEndpoints; i++) { 173 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 174 if (ed == NULL) { 175 aprint_error_dev(self, 176 "no endpoint descriptor for %d\n)", i); 177 goto bad; 178 } 179 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 180 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 181 ucaa->ucaa_bulkin = ed->bEndpointAddress; 182 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 183 (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { 184 ucaa->ucaa_bulkout = ed->bEndpointAddress; 185 } 186 } 187 188 if (ucaa->ucaa_bulkin == -1) { 189 aprint_error_dev(self, "Could not find data bulk in\n"); 190 goto bad; 191 } 192 if (ucaa->ucaa_bulkout == -1) { 193 aprint_error_dev(self, "Could not find data bulk out\n"); 194 goto bad; 195 } 196 197 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 198 sc->sc_cm_over_data = 1; 199 } else { 200 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 201 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 202 err = umodem_set_comm_feature(sc, 203 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 204 else 205 err = 0; 206 if (err) { 207 aprint_error_dev(self, 208 "could not set data multiplex mode\n"); 209 goto bad; 210 } 211 sc->sc_cm_over_data = 1; 212 } 213 } 214 215 /* 216 * The standard allows for notification messages (to indicate things 217 * like a modem hangup) to come in via an interrupt endpoint 218 * off of the control interface. Iterate over the endpoints on 219 * the control interface and see if there are any interrupt 220 * endpoints; if there are, then register it. 221 */ 222 223 sc->sc_ctl_notify = -1; 224 sc->sc_notify_pipe = NULL; 225 226 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 227 for (i = 0; i < id->bNumEndpoints; i++) { 228 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 229 if (ed == NULL) 230 continue; 231 232 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 233 (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { 234 aprint_verbose_dev(self, 235 "status change notification available\n"); 236 sc->sc_ctl_notify = ed->bEndpointAddress; 237 } 238 } 239 240 sc->sc_dtr = -1; 241 242 /* ucaa_bulkin, ucaa_bulkout set above */ 243 ucaa->ucaa_ibufsize = UMODEMIBUFSIZE; 244 ucaa->ucaa_obufsize = UMODEMOBUFSIZE; 245 ucaa->ucaa_ibufsizepad = UMODEMIBUFSIZE; 246 ucaa->ucaa_opkthdrlen = 0; 247 ucaa->ucaa_device = sc->sc_udev; 248 ucaa->ucaa_iface = sc->sc_data_iface; 249 ucaa->ucaa_arg = sc; 250 251 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 252 253 DPRINTF(("umodem_common_attach: sc=%p\n", sc)); 254 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, ucaa, 255 ucomprint, ucomsubmatch); 256 257 return 0; 258 259 bad: 260 sc->sc_dying = true; 261 return 1; 262 } 263 264 int 265 umodem_open(void *addr, int portno) 266 { 267 struct umodem_softc *sc = addr; 268 int err; 269 270 if (sc->sc_dying) 271 return EIO; 272 273 DPRINTF(("umodem_open: sc=%p\n", sc)); 274 275 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 276 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 277 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 278 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 279 umodem_intr, USBD_DEFAULT_INTERVAL); 280 281 if (err) { 282 DPRINTF(("Failed to establish notify pipe: %s\n", 283 usbd_errstr(err))); 284 return EIO; 285 } 286 } 287 288 return 0; 289 } 290 291 void 292 umodem_close(void *addr, int portno) 293 { 294 struct umodem_softc *sc = addr; 295 296 DPRINTF(("umodem_close: sc=%p\n", sc)); 297 298 if (sc->sc_dying) 299 return; 300 301 if (sc->sc_notify_pipe != NULL) { 302 usbd_abort_pipe(sc->sc_notify_pipe); 303 usbd_close_pipe(sc->sc_notify_pipe); 304 sc->sc_notify_pipe = NULL; 305 } 306 } 307 308 static void 309 umodem_intr(struct usbd_xfer *xfer, void *priv, 310 usbd_status status) 311 { 312 struct umodem_softc *sc = priv; 313 u_char mstatus; 314 315 if (sc->sc_dying) 316 return; 317 318 if (status != USBD_NORMAL_COMPLETION) { 319 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 320 return; 321 printf("%s: abnormal status: %s\n", device_xname(sc->sc_dev), 322 usbd_errstr(status)); 323 if (status == USBD_STALLED) 324 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe); 325 return; 326 } 327 328 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 329 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 330 device_xname(sc->sc_dev), 331 sc->sc_notify_buf.bmRequestType)); 332 return; 333 } 334 335 switch (sc->sc_notify_buf.bNotification) { 336 case UCDC_N_SERIAL_STATE: 337 /* 338 * Set the serial state in ucom driver based on 339 * the bits from the notify message 340 */ 341 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 342 printf("%s: Invalid notification length! (%d)\n", 343 device_xname(sc->sc_dev), 344 UGETW(sc->sc_notify_buf.wLength)); 345 break; 346 } 347 DPRINTF(("%s: notify bytes = %02x%02x\n", 348 device_xname(sc->sc_dev), 349 sc->sc_notify_buf.data[0], 350 sc->sc_notify_buf.data[1])); 351 /* Currently, lsr is always zero. */ 352 sc->sc_lsr = sc->sc_msr = 0; 353 mstatus = sc->sc_notify_buf.data[0]; 354 355 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 356 sc->sc_msr |= UMSR_RI; 357 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 358 sc->sc_msr |= UMSR_DSR; 359 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 360 sc->sc_msr |= UMSR_DCD; 361 ucom_status_change(device_private(sc->sc_subdev)); 362 break; 363 default: 364 DPRINTF(("%s: unknown notify message: %02x\n", 365 device_xname(sc->sc_dev), 366 sc->sc_notify_buf.bNotification)); 367 break; 368 } 369 } 370 371 int 372 umodem_get_caps(struct usbd_device *dev, int *cm, int *acm, 373 usb_interface_descriptor_t *id) 374 { 375 const usb_cdc_cm_descriptor_t *cmd; 376 const usb_cdc_acm_descriptor_t *cad; 377 const usb_cdc_union_descriptor_t *cud; 378 uint32_t uq_flags; 379 380 *cm = *acm = 0; 381 uq_flags = usbd_get_quirks(dev)->uq_flags; 382 383 if (uq_flags & UQ_NO_UNION_NRM) { 384 DPRINTF(("umodem_get_caps: NO_UNION_NRM quirk - returning 0\n")); 385 return 0; 386 } 387 388 if (uq_flags & UQ_LOST_CS_DESC) 389 id = NULL; 390 391 cmd = (const usb_cdc_cm_descriptor_t *)usb_find_desc_if(dev, 392 UDESC_CS_INTERFACE, 393 UDESCSUB_CDC_CM, id); 394 if (cmd == NULL) { 395 DPRINTF(("umodem_get_caps: no CM desc\n")); 396 } else { 397 *cm = cmd->bmCapabilities; 398 } 399 400 cad = (const usb_cdc_acm_descriptor_t *)usb_find_desc_if(dev, 401 UDESC_CS_INTERFACE, 402 UDESCSUB_CDC_ACM, 403 id); 404 if (cad == NULL) { 405 DPRINTF(("umodem_get_caps: no ACM desc\n")); 406 } else { 407 *acm = cad->bmCapabilities; 408 } 409 410 cud = (const usb_cdc_union_descriptor_t *)usb_find_desc_if(dev, 411 UDESC_CS_INTERFACE, 412 UDESCSUB_CDC_UNION, 413 id); 414 if (cud == NULL) { 415 DPRINTF(("umodem_get_caps: no UNION desc\n")); 416 } 417 418 return cmd ? cmd->bDataInterface : cud ? cud->bSlaveInterface[0] : -1; 419 } 420 421 void 422 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 423 { 424 struct umodem_softc *sc = addr; 425 426 DPRINTF(("umodem_get_status:\n")); 427 428 *lsr = sc->sc_lsr; 429 *msr = sc->sc_msr; 430 } 431 432 int 433 umodem_param(void *addr, int portno, struct termios *t) 434 { 435 struct umodem_softc *sc = addr; 436 usbd_status err; 437 usb_cdc_line_state_t ls; 438 439 if (sc->sc_dying) 440 return EIO; 441 442 DPRINTF(("umodem_param: sc=%p\n", sc)); 443 444 USETDW(ls.dwDTERate, t->c_ospeed); 445 if (ISSET(t->c_cflag, CSTOPB)) 446 ls.bCharFormat = UCDC_STOP_BIT_2; 447 else 448 ls.bCharFormat = UCDC_STOP_BIT_1; 449 if (ISSET(t->c_cflag, PARENB)) { 450 if (ISSET(t->c_cflag, PARODD)) 451 ls.bParityType = UCDC_PARITY_ODD; 452 else 453 ls.bParityType = UCDC_PARITY_EVEN; 454 } else 455 ls.bParityType = UCDC_PARITY_NONE; 456 switch (ISSET(t->c_cflag, CSIZE)) { 457 case CS5: 458 ls.bDataBits = 5; 459 break; 460 case CS6: 461 ls.bDataBits = 6; 462 break; 463 case CS7: 464 ls.bDataBits = 7; 465 break; 466 case CS8: 467 ls.bDataBits = 8; 468 break; 469 } 470 471 err = umodem_set_line_coding(sc, &ls); 472 if (err) { 473 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 474 return EPASSTHROUGH; 475 } 476 return 0; 477 } 478 479 int 480 umodem_ioctl(void *addr, int portno, u_long cmd, void *data, 481 int flag, proc_t *p) 482 { 483 struct umodem_softc *sc = addr; 484 int error = 0; 485 486 if (sc->sc_dying) 487 return EIO; 488 489 DPRINTF(("umodem_ioctl: cmd=0x%08lx\n", cmd)); 490 491 switch (cmd) { 492 case USB_GET_CM_OVER_DATA: 493 *(int *)data = sc->sc_cm_over_data; 494 break; 495 496 case USB_SET_CM_OVER_DATA: 497 if (*(int *)data != sc->sc_cm_over_data) { 498 /* XXX change it */ 499 } 500 break; 501 502 default: 503 DPRINTF(("umodem_ioctl: unknown\n")); 504 error = EPASSTHROUGH; 505 break; 506 } 507 508 return error; 509 } 510 511 static void 512 umodem_dtr(struct umodem_softc *sc, int onoff) 513 { 514 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 515 516 if (sc->sc_dtr == onoff) 517 return; 518 sc->sc_dtr = onoff; 519 520 umodem_set_line_state(sc); 521 } 522 523 static void 524 umodem_rts(struct umodem_softc *sc, int onoff) 525 { 526 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 527 528 if (sc->sc_rts == onoff) 529 return; 530 sc->sc_rts = onoff; 531 532 umodem_set_line_state(sc); 533 } 534 535 static void 536 umodem_set_line_state(struct umodem_softc *sc) 537 { 538 usb_device_request_t req; 539 int ls; 540 541 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 542 (sc->sc_rts ? UCDC_LINE_RTS : 0); 543 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 544 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 545 USETW(req.wValue, ls); 546 USETW(req.wIndex, sc->sc_ctl_iface_no); 547 USETW(req.wLength, 0); 548 549 (void)usbd_do_request(sc->sc_udev, &req, 0); 550 551 } 552 553 static void 554 umodem_break(struct umodem_softc *sc, int onoff) 555 { 556 usb_device_request_t req; 557 558 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 559 560 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 561 return; 562 563 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 564 req.bRequest = UCDC_SEND_BREAK; 565 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 566 USETW(req.wIndex, sc->sc_ctl_iface_no); 567 USETW(req.wLength, 0); 568 569 (void)usbd_do_request(sc->sc_udev, &req, 0); 570 } 571 572 void 573 umodem_set(void *addr, int portno, int reg, int onoff) 574 { 575 struct umodem_softc *sc = addr; 576 577 if (sc->sc_dying) 578 return; 579 580 switch (reg) { 581 case UCOM_SET_DTR: 582 umodem_dtr(sc, onoff); 583 break; 584 case UCOM_SET_RTS: 585 umodem_rts(sc, onoff); 586 break; 587 case UCOM_SET_BREAK: 588 umodem_break(sc, onoff); 589 break; 590 default: 591 break; 592 } 593 } 594 595 static usbd_status 596 umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) 597 { 598 usb_device_request_t req; 599 usbd_status err; 600 601 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 602 UGETDW(state->dwDTERate), state->bCharFormat, 603 state->bParityType, state->bDataBits)); 604 605 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 606 DPRINTF(("umodem_set_line_coding: already set\n")); 607 return USBD_NORMAL_COMPLETION; 608 } 609 610 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 611 req.bRequest = UCDC_SET_LINE_CODING; 612 USETW(req.wValue, 0); 613 USETW(req.wIndex, sc->sc_ctl_iface_no); 614 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 615 616 err = usbd_do_request(sc->sc_udev, &req, state); 617 if (err) { 618 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 619 usbd_errstr(err))); 620 return err; 621 } 622 623 sc->sc_line_state = *state; 624 625 return USBD_NORMAL_COMPLETION; 626 } 627 628 static usbd_status 629 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 630 { 631 usb_device_request_t req; 632 usbd_status err; 633 usb_cdc_abstract_state_t ast; 634 635 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 636 state)); 637 638 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 639 req.bRequest = UCDC_SET_COMM_FEATURE; 640 USETW(req.wValue, feature); 641 USETW(req.wIndex, sc->sc_ctl_iface_no); 642 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 643 USETW(ast.wState, state); 644 645 err = usbd_do_request(sc->sc_udev, &req, &ast); 646 if (err) { 647 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 648 feature, usbd_errstr(err))); 649 return err; 650 } 651 652 return USBD_NORMAL_COMPLETION; 653 } 654 655 int 656 umodem_common_activate(struct umodem_softc *sc, enum devact act) 657 { 658 switch (act) { 659 case DVACT_DEACTIVATE: 660 sc->sc_dying = true; 661 return 0; 662 default: 663 return EOPNOTSUPP; 664 } 665 } 666 667 void 668 umodem_common_childdet(struct umodem_softc *sc, device_t child) 669 { 670 KASSERT(sc->sc_subdev == child); 671 sc->sc_subdev = NULL; 672 } 673 674 int 675 umodem_common_detach(struct umodem_softc *sc, int flags) 676 { 677 int rv = 0; 678 679 DPRINTF(("umodem_common_detach: sc=%p flags=%d\n", sc, flags)); 680 681 sc->sc_dying = true; 682 683 if (sc->sc_subdev != NULL) 684 rv = config_detach(sc->sc_subdev, flags); 685 686 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 687 688 return rv; 689 } 690
Indexes created Mon Sep 29 21:09:56 GMT 2025