1 /* $OpenBSD: umodem.c,v 1.69 2022/07/02 08:50:42 visa Exp $ */ 2 /* $NetBSD: umodem.c,v 1.45 2002/09/23 05:51:23 simonb Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Comm Class spec: https://www.usb.org/sites/default/files/usbccs10.pdf 36 * https://www.usb.org/sites/default/files/CDC1.2_WMC1.1_012011.zip 37 */ 38 39 /* 40 * TODO: 41 * - Add error recovery in various places; the big problem is what 42 * to do in a callback if there is an error. 43 * - Implement a Call Device for modems without multiplexed commands. 44 * 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/conf.h> 51 #include <sys/tty.h> 52 #include <sys/device.h> 53 54 #include <dev/usb/usb.h> 55 #include <dev/usb/usbcdc.h> 56 57 #include <dev/usb/usbdi.h> 58 #include <dev/usb/usbdevs.h> 59 #include <dev/usb/usb_quirks.h> 60 61 #include <dev/usb/ucomvar.h> 62 63 #ifdef UMODEM_DEBUG 64 #define DPRINTFN(n, x) do { if (umodemdebug > (n)) printf x; } while (0) 65 int umodemdebug = 0; 66 #else 67 #define DPRINTFN(n, x) 68 #endif 69 #define DPRINTF(x) DPRINTFN(0, x) 70 71 /* 72 * These are the maximum number of bytes transferred per frame. 73 * Buffers are this large to deal with high speed wireless devices. 74 * Capped at 1024 as ttymalloc() is limited to this amount. 75 */ 76 #define UMODEMIBUFSIZE 1024 77 #define UMODEMOBUFSIZE 1024 78 79 struct umodem_softc { 80 struct device sc_dev; /* base device */ 81 82 struct usbd_device *sc_udev; /* USB device */ 83 84 int sc_ctl_iface_no; 85 struct usbd_interface *sc_ctl_iface; /* control interface */ 86 struct usbd_interface *sc_data_iface; /* data interface */ 87 88 int sc_cm_cap; /* CM capabilities */ 89 int sc_acm_cap; /* ACM capabilities */ 90 91 int sc_cm_over_data; 92 93 struct usb_cdc_line_state sc_line_state;/* current line state */ 94 u_char sc_dtr; /* current DTR state */ 95 u_char sc_rts; /* current RTS state */ 96 97 struct device *sc_subdev; /* ucom device */ 98 99 int sc_ctl_notify; /* Notification endpoint */ 100 struct usbd_pipe *sc_notify_pipe; /* Notification pipe */ 101 struct usb_cdc_notification sc_notify_buf; /* Notification structure */ 102 u_char sc_lsr; /* Local status register */ 103 u_char sc_msr; /* Modem status register */ 104 }; 105 106 usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 107 int feature, int state); 108 usbd_status umodem_set_line_coding(struct umodem_softc *sc, 109 struct usb_cdc_line_state *state); 110 111 void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 112 void umodem_set(void *, int, int, int); 113 void umodem_dtr(struct umodem_softc *, int); 114 void umodem_rts(struct umodem_softc *, int); 115 void umodem_break(struct umodem_softc *, int); 116 void umodem_set_line_state(struct umodem_softc *); 117 int umodem_param(void *, int, struct termios *); 118 int umodem_open(void *, int portno); 119 void umodem_close(void *, int portno); 120 void umodem_intr(struct usbd_xfer *, void *, usbd_status); 121 122 const struct ucom_methods umodem_methods = { 123 umodem_get_status, 124 umodem_set, 125 umodem_param, 126 NULL, 127 umodem_open, 128 umodem_close, 129 NULL, 130 NULL, 131 }; 132 133 int umodem_match(struct device *, void *, void *); 134 void umodem_attach(struct device *, struct device *, void *); 135 int umodem_detach(struct device *, int); 136 137 void umodem_get_caps(struct usb_attach_arg *, int, int *, int *, int *); 138 139 struct cfdriver umodem_cd = { 140 NULL, "umodem", DV_DULL 141 }; 142 143 const struct cfattach umodem_ca = { 144 sizeof(struct umodem_softc), umodem_match, umodem_attach, umodem_detach 145 }; 146 147 void 148 umodem_get_caps(struct usb_attach_arg *uaa, int ctl_iface_no, 149 int *data_iface_idx, int *cm_cap, int *acm_cap) 150 { 151 const usb_descriptor_t *desc; 152 const usb_interface_descriptor_t *id; 153 const struct usb_cdc_cm_descriptor *cmd; 154 const struct usb_cdc_acm_descriptor *acmd; 155 const struct usb_cdc_union_descriptor *uniond; 156 struct usbd_desc_iter iter; 157 int current_iface_no = -1; 158 int data_iface_no = -1; 159 int i; 160 161 *data_iface_idx = -1; 162 *cm_cap = *acm_cap = 0; 163 usbd_desc_iter_init(uaa->device, &iter); 164 desc = usbd_desc_iter_next(&iter); 165 while (desc) { 166 if (desc->bDescriptorType == UDESC_INTERFACE) { 167 id = (usb_interface_descriptor_t *)desc; 168 current_iface_no = id->bInterfaceNumber; 169 if (current_iface_no != ctl_iface_no && 170 id->bInterfaceClass == UICLASS_CDC_DATA && 171 id->bInterfaceSubClass == UISUBCLASS_DATA && 172 data_iface_no == -1) 173 data_iface_no = current_iface_no; 174 } 175 if (current_iface_no == ctl_iface_no && 176 desc->bDescriptorType == UDESC_CS_INTERFACE) { 177 switch(desc->bDescriptorSubtype) { 178 case UDESCSUB_CDC_CM: 179 cmd = (struct usb_cdc_cm_descriptor *)desc; 180 *cm_cap = cmd->bmCapabilities; 181 data_iface_no = cmd->bDataInterface; 182 break; 183 case UDESCSUB_CDC_ACM: 184 acmd = (struct usb_cdc_acm_descriptor *)desc; 185 *acm_cap = acmd->bmCapabilities; 186 break; 187 case UDESCSUB_CDC_UNION: 188 uniond = 189 (struct usb_cdc_union_descriptor *)desc; 190 data_iface_no = uniond->bSlaveInterface[0]; 191 break; 192 } 193 } 194 desc = usbd_desc_iter_next(&iter); 195 } 196 197 /* 198 * If we got a data interface number, make sure the corresponding 199 * interface exists and is not already claimed. 200 */ 201 if (data_iface_no != -1) { 202 for (i = 0; i < uaa->nifaces; i++) { 203 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 204 205 if (id == NULL) 206 continue; 207 208 if (id->bInterfaceNumber == data_iface_no) { 209 if (!usbd_iface_claimed(uaa->device, i)) 210 *data_iface_idx = i; 211 break; 212 } 213 } 214 } 215 } 216 217 int 218 umodem_match(struct device *parent, void *match, void *aux) 219 { 220 struct usb_attach_arg *uaa = aux; 221 usb_interface_descriptor_t *id; 222 usb_device_descriptor_t *dd; 223 int data_iface_idx, cm_cap, acm_cap, ret = UMATCH_NONE; 224 225 if (uaa->iface == NULL) 226 return (ret); 227 228 id = usbd_get_interface_descriptor(uaa->iface); 229 dd = usbd_get_device_descriptor(uaa->device); 230 if (id == NULL || dd == NULL) 231 return (ret); 232 233 ret = UMATCH_NONE; 234 235 if (UGETW(dd->idVendor) == USB_VENDOR_KYOCERA && 236 UGETW(dd->idProduct) == USB_PRODUCT_KYOCERA_AHK3001V && 237 id->bInterfaceNumber == 0) 238 ret = UMATCH_VENDOR_PRODUCT; 239 240 if (ret == UMATCH_NONE && 241 id->bInterfaceClass == UICLASS_CDC && 242 id->bInterfaceSubClass == UISUBCLASS_ABSTRACT_CONTROL_MODEL && 243 (id->bInterfaceProtocol == UIPROTO_CDC_AT || 244 id->bInterfaceProtocol == UIPROTO_CDC_NOCLASS)) 245 ret = UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO; 246 247 if (ret == UMATCH_NONE) 248 return (ret); 249 250 /* umodem doesn't support devices without a data iface */ 251 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 252 &cm_cap, &acm_cap); 253 if (data_iface_idx == -1) 254 ret = UMATCH_NONE; 255 256 return (ret); 257 } 258 259 void 260 umodem_attach(struct device *parent, struct device *self, void *aux) 261 { 262 struct umodem_softc *sc = (struct umodem_softc *)self; 263 struct usb_attach_arg *uaa = aux; 264 struct usbd_device *dev = uaa->device; 265 usb_interface_descriptor_t *id; 266 usb_endpoint_descriptor_t *ed; 267 usbd_status err; 268 int data_iface_idx = -1; 269 int i; 270 struct ucom_attach_args uca; 271 272 sc->sc_udev = dev; 273 sc->sc_ctl_iface = uaa->iface; 274 275 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 276 //printf("%s: iclass %d/%d\n", sc->sc_dev.dv_xname, 277 // id->bInterfaceClass, id->bInterfaceSubClass); 278 sc->sc_ctl_iface_no = id->bInterfaceNumber; 279 280 /* Get the capabilities. */ 281 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 282 &sc->sc_cm_cap, &sc->sc_acm_cap); 283 284 usbd_claim_iface(sc->sc_udev, data_iface_idx); 285 sc->sc_data_iface = uaa->ifaces[data_iface_idx]; 286 id = usbd_get_interface_descriptor(sc->sc_data_iface); 287 288 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 289 sc->sc_dev.dv_xname, id->bInterfaceNumber, 290 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 291 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 292 293 /* 294 * Find the bulk endpoints. 295 * Iterate over all endpoints in the data interface and take note. 296 */ 297 uca.bulkin = uca.bulkout = -1; 298 299 for (i = 0; i < id->bNumEndpoints; i++) { 300 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 301 if (ed == NULL) { 302 printf("%s: no endpoint descriptor for %d\n", 303 sc->sc_dev.dv_xname, i); 304 goto bad; 305 } 306 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 307 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 308 uca.bulkin = ed->bEndpointAddress; 309 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 310 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 311 uca.bulkout = ed->bEndpointAddress; 312 } 313 } 314 315 if (uca.bulkin == -1) { 316 printf("%s: Could not find data bulk in\n", 317 sc->sc_dev.dv_xname); 318 goto bad; 319 } 320 if (uca.bulkout == -1) { 321 printf("%s: Could not find data bulk out\n", 322 sc->sc_dev.dv_xname); 323 goto bad; 324 } 325 326 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 327 sc->sc_cm_over_data = 1; 328 } else { 329 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 330 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 331 err = umodem_set_comm_feature(sc, 332 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 333 else 334 err = 0; 335 if (err) { 336 printf("%s: could not set data multiplex mode\n", 337 sc->sc_dev.dv_xname); 338 goto bad; 339 } 340 sc->sc_cm_over_data = 1; 341 } 342 } 343 344 /* 345 * The standard allows for notification messages (to indicate things 346 * like a modem hangup) to come in via an interrupt endpoint 347 * off of the control interface. Iterate over the endpoints on 348 * the control interface and see if there are any interrupt 349 * endpoints; if there are, then register it. 350 */ 351 352 sc->sc_ctl_notify = -1; 353 sc->sc_notify_pipe = NULL; 354 355 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 356 for (i = 0; i < id->bNumEndpoints; i++) { 357 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 358 if (ed == NULL) 359 continue; 360 361 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 362 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 363 printf("%s: status change notification available\n", 364 sc->sc_dev.dv_xname); 365 sc->sc_ctl_notify = ed->bEndpointAddress; 366 } 367 } 368 369 sc->sc_dtr = -1; 370 371 uca.portno = UCOM_UNK_PORTNO; 372 /* bulkin, bulkout set above */ 373 uca.ibufsize = UMODEMIBUFSIZE; 374 uca.obufsize = UMODEMOBUFSIZE; 375 uca.ibufsizepad = UMODEMIBUFSIZE; 376 uca.opkthdrlen = 0; 377 uca.device = sc->sc_udev; 378 uca.iface = sc->sc_data_iface; 379 uca.methods = &umodem_methods; 380 uca.arg = sc; 381 uca.info = NULL; 382 383 DPRINTF(("umodem_attach: sc=%p\n", sc)); 384 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 385 386 return; 387 388 bad: 389 usbd_deactivate(sc->sc_udev); 390 } 391 392 int 393 umodem_open(void *addr, int portno) 394 { 395 struct umodem_softc *sc = addr; 396 int err; 397 398 DPRINTF(("umodem_open: sc=%p\n", sc)); 399 400 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 401 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 402 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 403 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 404 umodem_intr, USBD_DEFAULT_INTERVAL); 405 406 if (err) { 407 DPRINTF(("Failed to establish notify pipe: %s\n", 408 usbd_errstr(err))); 409 return EIO; 410 } 411 } 412 413 return 0; 414 } 415 416 void 417 umodem_close(void *addr, int portno) 418 { 419 struct umodem_softc *sc = addr; 420 int err; 421 422 DPRINTF(("umodem_close: sc=%p\n", sc)); 423 424 if (sc->sc_notify_pipe != NULL) { 425 err = usbd_close_pipe(sc->sc_notify_pipe); 426 if (err) 427 printf("%s: close notify pipe failed: %s\n", 428 sc->sc_dev.dv_xname, usbd_errstr(err)); 429 sc->sc_notify_pipe = NULL; 430 } 431 } 432 433 void 434 umodem_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 435 { 436 struct umodem_softc *sc = priv; 437 u_char mstatus; 438 439 if (usbd_is_dying(sc->sc_udev)) 440 return; 441 442 if (status != USBD_NORMAL_COMPLETION) { 443 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 444 return; 445 DPRINTF(("%s: abnormal status: %s\n", sc->sc_dev.dv_xname, 446 usbd_errstr(status))); 447 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe); 448 return; 449 } 450 451 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 452 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 453 sc->sc_dev.dv_xname, 454 sc->sc_notify_buf.bmRequestType)); 455 return; 456 } 457 458 switch (sc->sc_notify_buf.bNotification) { 459 case UCDC_N_SERIAL_STATE: 460 /* 461 * Set the serial state in ucom driver based on 462 * the bits from the notify message 463 */ 464 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 465 printf("%s: Invalid notification length! (%d)\n", 466 sc->sc_dev.dv_xname, 467 UGETW(sc->sc_notify_buf.wLength)); 468 break; 469 } 470 DPRINTF(("%s: notify bytes = %02x%02x\n", 471 sc->sc_dev.dv_xname, 472 sc->sc_notify_buf.data[0], 473 sc->sc_notify_buf.data[1])); 474 /* Currently, lsr is always zero. */ 475 sc->sc_lsr = sc->sc_msr = 0; 476 mstatus = sc->sc_notify_buf.data[0]; 477 478 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 479 sc->sc_msr |= UMSR_RI; 480 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 481 sc->sc_msr |= UMSR_DSR; 482 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 483 sc->sc_msr |= UMSR_DCD; 484 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 485 break; 486 default: 487 DPRINTF(("%s: unknown notify message: %02x\n", 488 sc->sc_dev.dv_xname, 489 sc->sc_notify_buf.bNotification)); 490 break; 491 } 492 } 493 494 void 495 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 496 { 497 struct umodem_softc *sc = addr; 498 499 DPRINTF(("umodem_get_status:\n")); 500 501 if (lsr != NULL) 502 *lsr = sc->sc_lsr; 503 if (msr != NULL) 504 *msr = sc->sc_msr; 505 } 506 507 int 508 umodem_param(void *addr, int portno, struct termios *t) 509 { 510 struct umodem_softc *sc = addr; 511 usbd_status err; 512 struct usb_cdc_line_state ls; 513 514 DPRINTF(("umodem_param: sc=%p\n", sc)); 515 516 USETDW(ls.dwDTERate, t->c_ospeed); 517 if (ISSET(t->c_cflag, CSTOPB)) 518 ls.bCharFormat = UCDC_STOP_BIT_2; 519 else 520 ls.bCharFormat = UCDC_STOP_BIT_1; 521 if (ISSET(t->c_cflag, PARENB)) { 522 if (ISSET(t->c_cflag, PARODD)) 523 ls.bParityType = UCDC_PARITY_ODD; 524 else 525 ls.bParityType = UCDC_PARITY_EVEN; 526 } else 527 ls.bParityType = UCDC_PARITY_NONE; 528 switch (ISSET(t->c_cflag, CSIZE)) { 529 case CS5: 530 ls.bDataBits = 5; 531 break; 532 case CS6: 533 ls.bDataBits = 6; 534 break; 535 case CS7: 536 ls.bDataBits = 7; 537 break; 538 case CS8: 539 ls.bDataBits = 8; 540 break; 541 } 542 543 err = umodem_set_line_coding(sc, &ls); 544 if (err) { 545 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 546 return (1); 547 } 548 return (0); 549 } 550 551 void 552 umodem_dtr(struct umodem_softc *sc, int onoff) 553 { 554 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 555 556 if (sc->sc_dtr == onoff) 557 return; 558 sc->sc_dtr = onoff; 559 560 umodem_set_line_state(sc); 561 } 562 563 void 564 umodem_rts(struct umodem_softc *sc, int onoff) 565 { 566 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 567 568 if (sc->sc_rts == onoff) 569 return; 570 sc->sc_rts = onoff; 571 572 umodem_set_line_state(sc); 573 } 574 575 void 576 umodem_set_line_state(struct umodem_softc *sc) 577 { 578 usb_device_request_t req; 579 int ls; 580 581 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 582 (sc->sc_rts ? UCDC_LINE_RTS : 0); 583 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 584 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 585 USETW(req.wValue, ls); 586 USETW(req.wIndex, sc->sc_ctl_iface_no); 587 USETW(req.wLength, 0); 588 589 (void)usbd_do_request(sc->sc_udev, &req, 0); 590 591 } 592 593 void 594 umodem_break(struct umodem_softc *sc, int onoff) 595 { 596 usb_device_request_t req; 597 598 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 599 600 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 601 return; 602 603 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 604 req.bRequest = UCDC_SEND_BREAK; 605 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 606 USETW(req.wIndex, sc->sc_ctl_iface_no); 607 USETW(req.wLength, 0); 608 609 (void)usbd_do_request(sc->sc_udev, &req, 0); 610 } 611 612 void 613 umodem_set(void *addr, int portno, int reg, int onoff) 614 { 615 struct umodem_softc *sc = addr; 616 617 switch (reg) { 618 case UCOM_SET_DTR: 619 umodem_dtr(sc, onoff); 620 break; 621 case UCOM_SET_RTS: 622 umodem_rts(sc, onoff); 623 break; 624 case UCOM_SET_BREAK: 625 umodem_break(sc, onoff); 626 break; 627 default: 628 break; 629 } 630 } 631 632 usbd_status 633 umodem_set_line_coding(struct umodem_softc *sc, 634 struct usb_cdc_line_state *state) 635 { 636 usb_device_request_t req; 637 usbd_status err; 638 639 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 640 UGETDW(state->dwDTERate), state->bCharFormat, 641 state->bParityType, state->bDataBits)); 642 643 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 644 DPRINTF(("umodem_set_line_coding: already set\n")); 645 return (USBD_NORMAL_COMPLETION); 646 } 647 648 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 649 req.bRequest = UCDC_SET_LINE_CODING; 650 USETW(req.wValue, 0); 651 USETW(req.wIndex, sc->sc_ctl_iface_no); 652 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 653 654 err = usbd_do_request(sc->sc_udev, &req, state); 655 if (err) { 656 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 657 usbd_errstr(err))); 658 return (err); 659 } 660 661 sc->sc_line_state = *state; 662 663 return (USBD_NORMAL_COMPLETION); 664 } 665 666 usbd_status 667 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 668 { 669 usb_device_request_t req; 670 usbd_status err; 671 struct usb_cdc_abstract_state ast; 672 673 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 674 state)); 675 676 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 677 req.bRequest = UCDC_SET_COMM_FEATURE; 678 USETW(req.wValue, feature); 679 USETW(req.wIndex, sc->sc_ctl_iface_no); 680 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 681 USETW(ast.wState, state); 682 683 err = usbd_do_request(sc->sc_udev, &req, &ast); 684 if (err) { 685 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 686 feature, usbd_errstr(err))); 687 return (err); 688 } 689 690 return (USBD_NORMAL_COMPLETION); 691 } 692 693 int 694 umodem_detach(struct device *self, int flags) 695 { 696 struct umodem_softc *sc = (struct umodem_softc *)self; 697 int rv = 0; 698 699 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 700 701 if (sc->sc_notify_pipe != NULL) { 702 usbd_close_pipe(sc->sc_notify_pipe); 703 sc->sc_notify_pipe = NULL; 704 } 705 706 if (sc->sc_subdev != NULL) 707 rv = config_detach(sc->sc_subdev, flags); 708 709 return (rv); 710 } 711