1 /* $OpenBSD: umodem.c,v 1.70 2024/05/23 03:21:09 jsg 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/tty.h> 50 #include <sys/device.h> 51 52 #include <dev/usb/usb.h> 53 #include <dev/usb/usbcdc.h> 54 55 #include <dev/usb/usbdi.h> 56 #include <dev/usb/usbdevs.h> 57 #include <dev/usb/usb_quirks.h> 58 59 #include <dev/usb/ucomvar.h> 60 61 #ifdef UMODEM_DEBUG 62 #define DPRINTFN(n, x) do { if (umodemdebug > (n)) printf x; } while (0) 63 int umodemdebug = 0; 64 #else 65 #define DPRINTFN(n, x) 66 #endif 67 #define DPRINTF(x) DPRINTFN(0, x) 68 69 /* 70 * These are the maximum number of bytes transferred per frame. 71 * Buffers are this large to deal with high speed wireless devices. 72 * Capped at 1024 as ttymalloc() is limited to this amount. 73 */ 74 #define UMODEMIBUFSIZE 1024 75 #define UMODEMOBUFSIZE 1024 76 77 struct umodem_softc { 78 struct device sc_dev; /* base device */ 79 80 struct usbd_device *sc_udev; /* USB device */ 81 82 int sc_ctl_iface_no; 83 struct usbd_interface *sc_ctl_iface; /* control interface */ 84 struct usbd_interface *sc_data_iface; /* data interface */ 85 86 int sc_cm_cap; /* CM capabilities */ 87 int sc_acm_cap; /* ACM capabilities */ 88 89 int sc_cm_over_data; 90 91 struct usb_cdc_line_state sc_line_state;/* current line state */ 92 u_char sc_dtr; /* current DTR state */ 93 u_char sc_rts; /* current RTS state */ 94 95 struct device *sc_subdev; /* ucom device */ 96 97 int sc_ctl_notify; /* Notification endpoint */ 98 struct usbd_pipe *sc_notify_pipe; /* Notification pipe */ 99 struct usb_cdc_notification sc_notify_buf; /* Notification structure */ 100 u_char sc_lsr; /* Local status register */ 101 u_char sc_msr; /* Modem status register */ 102 }; 103 104 usbd_status umodem_set_comm_feature(struct umodem_softc *sc, 105 int feature, int state); 106 usbd_status umodem_set_line_coding(struct umodem_softc *sc, 107 struct usb_cdc_line_state *state); 108 109 void umodem_get_status(void *, int portno, u_char *lsr, u_char *msr); 110 void umodem_set(void *, int, int, int); 111 void umodem_dtr(struct umodem_softc *, int); 112 void umodem_rts(struct umodem_softc *, int); 113 void umodem_break(struct umodem_softc *, int); 114 void umodem_set_line_state(struct umodem_softc *); 115 int umodem_param(void *, int, struct termios *); 116 int umodem_open(void *, int portno); 117 void umodem_close(void *, int portno); 118 void umodem_intr(struct usbd_xfer *, void *, usbd_status); 119 120 const struct ucom_methods umodem_methods = { 121 umodem_get_status, 122 umodem_set, 123 umodem_param, 124 NULL, 125 umodem_open, 126 umodem_close, 127 NULL, 128 NULL, 129 }; 130 131 int umodem_match(struct device *, void *, void *); 132 void umodem_attach(struct device *, struct device *, void *); 133 int umodem_detach(struct device *, int); 134 135 void umodem_get_caps(struct usb_attach_arg *, int, int *, int *, int *); 136 137 struct cfdriver umodem_cd = { 138 NULL, "umodem", DV_DULL 139 }; 140 141 const struct cfattach umodem_ca = { 142 sizeof(struct umodem_softc), umodem_match, umodem_attach, umodem_detach 143 }; 144 145 void 146 umodem_get_caps(struct usb_attach_arg *uaa, int ctl_iface_no, 147 int *data_iface_idx, int *cm_cap, int *acm_cap) 148 { 149 const usb_descriptor_t *desc; 150 const usb_interface_descriptor_t *id; 151 const struct usb_cdc_cm_descriptor *cmd; 152 const struct usb_cdc_acm_descriptor *acmd; 153 const struct usb_cdc_union_descriptor *uniond; 154 struct usbd_desc_iter iter; 155 int current_iface_no = -1; 156 int data_iface_no = -1; 157 int i; 158 159 *data_iface_idx = -1; 160 *cm_cap = *acm_cap = 0; 161 usbd_desc_iter_init(uaa->device, &iter); 162 desc = usbd_desc_iter_next(&iter); 163 while (desc) { 164 if (desc->bDescriptorType == UDESC_INTERFACE) { 165 id = (usb_interface_descriptor_t *)desc; 166 current_iface_no = id->bInterfaceNumber; 167 if (current_iface_no != ctl_iface_no && 168 id->bInterfaceClass == UICLASS_CDC_DATA && 169 id->bInterfaceSubClass == UISUBCLASS_DATA && 170 data_iface_no == -1) 171 data_iface_no = current_iface_no; 172 } 173 if (current_iface_no == ctl_iface_no && 174 desc->bDescriptorType == UDESC_CS_INTERFACE) { 175 switch(desc->bDescriptorSubtype) { 176 case UDESCSUB_CDC_CM: 177 cmd = (struct usb_cdc_cm_descriptor *)desc; 178 *cm_cap = cmd->bmCapabilities; 179 data_iface_no = cmd->bDataInterface; 180 break; 181 case UDESCSUB_CDC_ACM: 182 acmd = (struct usb_cdc_acm_descriptor *)desc; 183 *acm_cap = acmd->bmCapabilities; 184 break; 185 case UDESCSUB_CDC_UNION: 186 uniond = 187 (struct usb_cdc_union_descriptor *)desc; 188 data_iface_no = uniond->bSlaveInterface[0]; 189 break; 190 } 191 } 192 desc = usbd_desc_iter_next(&iter); 193 } 194 195 /* 196 * If we got a data interface number, make sure the corresponding 197 * interface exists and is not already claimed. 198 */ 199 if (data_iface_no != -1) { 200 for (i = 0; i < uaa->nifaces; i++) { 201 id = usbd_get_interface_descriptor(uaa->ifaces[i]); 202 203 if (id == NULL) 204 continue; 205 206 if (id->bInterfaceNumber == data_iface_no) { 207 if (!usbd_iface_claimed(uaa->device, i)) 208 *data_iface_idx = i; 209 break; 210 } 211 } 212 } 213 } 214 215 int 216 umodem_match(struct device *parent, void *match, void *aux) 217 { 218 struct usb_attach_arg *uaa = aux; 219 usb_interface_descriptor_t *id; 220 usb_device_descriptor_t *dd; 221 int data_iface_idx, cm_cap, acm_cap, ret = UMATCH_NONE; 222 223 if (uaa->iface == NULL) 224 return (ret); 225 226 id = usbd_get_interface_descriptor(uaa->iface); 227 dd = usbd_get_device_descriptor(uaa->device); 228 if (id == NULL || dd == NULL) 229 return (ret); 230 231 ret = UMATCH_NONE; 232 233 if (UGETW(dd->idVendor) == USB_VENDOR_KYOCERA && 234 UGETW(dd->idProduct) == USB_PRODUCT_KYOCERA_AHK3001V && 235 id->bInterfaceNumber == 0) 236 ret = UMATCH_VENDOR_PRODUCT; 237 238 if (ret == UMATCH_NONE && 239 id->bInterfaceClass == UICLASS_CDC && 240 id->bInterfaceSubClass == UISUBCLASS_ABSTRACT_CONTROL_MODEL && 241 (id->bInterfaceProtocol == UIPROTO_CDC_AT || 242 id->bInterfaceProtocol == UIPROTO_CDC_NOCLASS)) 243 ret = UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO; 244 245 if (ret == UMATCH_NONE) 246 return (ret); 247 248 /* umodem doesn't support devices without a data iface */ 249 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 250 &cm_cap, &acm_cap); 251 if (data_iface_idx == -1) 252 ret = UMATCH_NONE; 253 254 return (ret); 255 } 256 257 void 258 umodem_attach(struct device *parent, struct device *self, void *aux) 259 { 260 struct umodem_softc *sc = (struct umodem_softc *)self; 261 struct usb_attach_arg *uaa = aux; 262 struct usbd_device *dev = uaa->device; 263 usb_interface_descriptor_t *id; 264 usb_endpoint_descriptor_t *ed; 265 usbd_status err; 266 int data_iface_idx = -1; 267 int i; 268 struct ucom_attach_args uca; 269 270 sc->sc_udev = dev; 271 sc->sc_ctl_iface = uaa->iface; 272 273 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 274 //printf("%s: iclass %d/%d\n", sc->sc_dev.dv_xname, 275 // id->bInterfaceClass, id->bInterfaceSubClass); 276 sc->sc_ctl_iface_no = id->bInterfaceNumber; 277 278 /* Get the capabilities. */ 279 umodem_get_caps(uaa, id->bInterfaceNumber, &data_iface_idx, 280 &sc->sc_cm_cap, &sc->sc_acm_cap); 281 282 usbd_claim_iface(sc->sc_udev, data_iface_idx); 283 sc->sc_data_iface = uaa->ifaces[data_iface_idx]; 284 id = usbd_get_interface_descriptor(sc->sc_data_iface); 285 286 printf("%s: data interface %d, has %sCM over data, has %sbreak\n", 287 sc->sc_dev.dv_xname, id->bInterfaceNumber, 288 sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", 289 sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); 290 291 /* 292 * Find the bulk endpoints. 293 * Iterate over all endpoints in the data interface and take note. 294 */ 295 uca.bulkin = uca.bulkout = -1; 296 297 for (i = 0; i < id->bNumEndpoints; i++) { 298 ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); 299 if (ed == NULL) { 300 printf("%s: no endpoint descriptor for %d\n", 301 sc->sc_dev.dv_xname, i); 302 goto bad; 303 } 304 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 305 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 306 uca.bulkin = ed->bEndpointAddress; 307 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 308 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 309 uca.bulkout = ed->bEndpointAddress; 310 } 311 } 312 313 if (uca.bulkin == -1) { 314 printf("%s: Could not find data bulk in\n", 315 sc->sc_dev.dv_xname); 316 goto bad; 317 } 318 if (uca.bulkout == -1) { 319 printf("%s: Could not find data bulk out\n", 320 sc->sc_dev.dv_xname); 321 goto bad; 322 } 323 324 if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) { 325 sc->sc_cm_over_data = 1; 326 } else { 327 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { 328 if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) 329 err = umodem_set_comm_feature(sc, 330 UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); 331 else 332 err = 0; 333 if (err) { 334 printf("%s: could not set data multiplex mode\n", 335 sc->sc_dev.dv_xname); 336 goto bad; 337 } 338 sc->sc_cm_over_data = 1; 339 } 340 } 341 342 /* 343 * The standard allows for notification messages (to indicate things 344 * like a modem hangup) to come in via an interrupt endpoint 345 * off of the control interface. Iterate over the endpoints on 346 * the control interface and see if there are any interrupt 347 * endpoints; if there are, then register it. 348 */ 349 350 sc->sc_ctl_notify = -1; 351 sc->sc_notify_pipe = NULL; 352 353 id = usbd_get_interface_descriptor(sc->sc_ctl_iface); 354 for (i = 0; i < id->bNumEndpoints; i++) { 355 ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); 356 if (ed == NULL) 357 continue; 358 359 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 360 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 361 printf("%s: status change notification available\n", 362 sc->sc_dev.dv_xname); 363 sc->sc_ctl_notify = ed->bEndpointAddress; 364 } 365 } 366 367 sc->sc_dtr = -1; 368 369 uca.portno = UCOM_UNK_PORTNO; 370 /* bulkin, bulkout set above */ 371 uca.ibufsize = UMODEMIBUFSIZE; 372 uca.obufsize = UMODEMOBUFSIZE; 373 uca.ibufsizepad = UMODEMIBUFSIZE; 374 uca.opkthdrlen = 0; 375 uca.device = sc->sc_udev; 376 uca.iface = sc->sc_data_iface; 377 uca.methods = &umodem_methods; 378 uca.arg = sc; 379 uca.info = NULL; 380 381 DPRINTF(("umodem_attach: sc=%p\n", sc)); 382 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 383 384 return; 385 386 bad: 387 usbd_deactivate(sc->sc_udev); 388 } 389 390 int 391 umodem_open(void *addr, int portno) 392 { 393 struct umodem_softc *sc = addr; 394 int err; 395 396 DPRINTF(("umodem_open: sc=%p\n", sc)); 397 398 if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) { 399 err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify, 400 USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc, 401 &sc->sc_notify_buf, sizeof(sc->sc_notify_buf), 402 umodem_intr, USBD_DEFAULT_INTERVAL); 403 404 if (err) { 405 DPRINTF(("Failed to establish notify pipe: %s\n", 406 usbd_errstr(err))); 407 return EIO; 408 } 409 } 410 411 return 0; 412 } 413 414 void 415 umodem_close(void *addr, int portno) 416 { 417 struct umodem_softc *sc = addr; 418 int err; 419 420 DPRINTF(("umodem_close: sc=%p\n", sc)); 421 422 if (sc->sc_notify_pipe != NULL) { 423 err = usbd_close_pipe(sc->sc_notify_pipe); 424 if (err) 425 printf("%s: close notify pipe failed: %s\n", 426 sc->sc_dev.dv_xname, usbd_errstr(err)); 427 sc->sc_notify_pipe = NULL; 428 } 429 } 430 431 void 432 umodem_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 433 { 434 struct umodem_softc *sc = priv; 435 u_char mstatus; 436 437 if (usbd_is_dying(sc->sc_udev)) 438 return; 439 440 if (status != USBD_NORMAL_COMPLETION) { 441 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 442 return; 443 DPRINTF(("%s: abnormal status: %s\n", sc->sc_dev.dv_xname, 444 usbd_errstr(status))); 445 usbd_clear_endpoint_stall_async(sc->sc_notify_pipe); 446 return; 447 } 448 449 if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) { 450 DPRINTF(("%s: unknown message type (%02x) on notify pipe\n", 451 sc->sc_dev.dv_xname, 452 sc->sc_notify_buf.bmRequestType)); 453 return; 454 } 455 456 switch (sc->sc_notify_buf.bNotification) { 457 case UCDC_N_SERIAL_STATE: 458 /* 459 * Set the serial state in ucom driver based on 460 * the bits from the notify message 461 */ 462 if (UGETW(sc->sc_notify_buf.wLength) != 2) { 463 printf("%s: Invalid notification length! (%d)\n", 464 sc->sc_dev.dv_xname, 465 UGETW(sc->sc_notify_buf.wLength)); 466 break; 467 } 468 DPRINTF(("%s: notify bytes = %02x%02x\n", 469 sc->sc_dev.dv_xname, 470 sc->sc_notify_buf.data[0], 471 sc->sc_notify_buf.data[1])); 472 /* Currently, lsr is always zero. */ 473 sc->sc_lsr = sc->sc_msr = 0; 474 mstatus = sc->sc_notify_buf.data[0]; 475 476 if (ISSET(mstatus, UCDC_N_SERIAL_RI)) 477 sc->sc_msr |= UMSR_RI; 478 if (ISSET(mstatus, UCDC_N_SERIAL_DSR)) 479 sc->sc_msr |= UMSR_DSR; 480 if (ISSET(mstatus, UCDC_N_SERIAL_DCD)) 481 sc->sc_msr |= UMSR_DCD; 482 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 483 break; 484 default: 485 DPRINTF(("%s: unknown notify message: %02x\n", 486 sc->sc_dev.dv_xname, 487 sc->sc_notify_buf.bNotification)); 488 break; 489 } 490 } 491 492 void 493 umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 494 { 495 struct umodem_softc *sc = addr; 496 497 DPRINTF(("umodem_get_status:\n")); 498 499 if (lsr != NULL) 500 *lsr = sc->sc_lsr; 501 if (msr != NULL) 502 *msr = sc->sc_msr; 503 } 504 505 int 506 umodem_param(void *addr, int portno, struct termios *t) 507 { 508 struct umodem_softc *sc = addr; 509 usbd_status err; 510 struct usb_cdc_line_state ls; 511 512 DPRINTF(("umodem_param: sc=%p\n", sc)); 513 514 USETDW(ls.dwDTERate, t->c_ospeed); 515 if (ISSET(t->c_cflag, CSTOPB)) 516 ls.bCharFormat = UCDC_STOP_BIT_2; 517 else 518 ls.bCharFormat = UCDC_STOP_BIT_1; 519 if (ISSET(t->c_cflag, PARENB)) { 520 if (ISSET(t->c_cflag, PARODD)) 521 ls.bParityType = UCDC_PARITY_ODD; 522 else 523 ls.bParityType = UCDC_PARITY_EVEN; 524 } else 525 ls.bParityType = UCDC_PARITY_NONE; 526 switch (ISSET(t->c_cflag, CSIZE)) { 527 case CS5: 528 ls.bDataBits = 5; 529 break; 530 case CS6: 531 ls.bDataBits = 6; 532 break; 533 case CS7: 534 ls.bDataBits = 7; 535 break; 536 case CS8: 537 ls.bDataBits = 8; 538 break; 539 } 540 541 err = umodem_set_line_coding(sc, &ls); 542 if (err) { 543 DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err))); 544 return (1); 545 } 546 return (0); 547 } 548 549 void 550 umodem_dtr(struct umodem_softc *sc, int onoff) 551 { 552 DPRINTF(("umodem_dtr: onoff=%d\n", onoff)); 553 554 if (sc->sc_dtr == onoff) 555 return; 556 sc->sc_dtr = onoff; 557 558 umodem_set_line_state(sc); 559 } 560 561 void 562 umodem_rts(struct umodem_softc *sc, int onoff) 563 { 564 DPRINTF(("umodem_rts: onoff=%d\n", onoff)); 565 566 if (sc->sc_rts == onoff) 567 return; 568 sc->sc_rts = onoff; 569 570 umodem_set_line_state(sc); 571 } 572 573 void 574 umodem_set_line_state(struct umodem_softc *sc) 575 { 576 usb_device_request_t req; 577 int ls; 578 579 ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) | 580 (sc->sc_rts ? UCDC_LINE_RTS : 0); 581 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 582 req.bRequest = UCDC_SET_CONTROL_LINE_STATE; 583 USETW(req.wValue, ls); 584 USETW(req.wIndex, sc->sc_ctl_iface_no); 585 USETW(req.wLength, 0); 586 587 (void)usbd_do_request(sc->sc_udev, &req, 0); 588 589 } 590 591 void 592 umodem_break(struct umodem_softc *sc, int onoff) 593 { 594 usb_device_request_t req; 595 596 DPRINTF(("umodem_break: onoff=%d\n", onoff)); 597 598 if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 599 return; 600 601 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 602 req.bRequest = UCDC_SEND_BREAK; 603 USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF); 604 USETW(req.wIndex, sc->sc_ctl_iface_no); 605 USETW(req.wLength, 0); 606 607 (void)usbd_do_request(sc->sc_udev, &req, 0); 608 } 609 610 void 611 umodem_set(void *addr, int portno, int reg, int onoff) 612 { 613 struct umodem_softc *sc = addr; 614 615 switch (reg) { 616 case UCOM_SET_DTR: 617 umodem_dtr(sc, onoff); 618 break; 619 case UCOM_SET_RTS: 620 umodem_rts(sc, onoff); 621 break; 622 case UCOM_SET_BREAK: 623 umodem_break(sc, onoff); 624 break; 625 default: 626 break; 627 } 628 } 629 630 usbd_status 631 umodem_set_line_coding(struct umodem_softc *sc, 632 struct usb_cdc_line_state *state) 633 { 634 usb_device_request_t req; 635 usbd_status err; 636 637 DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", 638 UGETDW(state->dwDTERate), state->bCharFormat, 639 state->bParityType, state->bDataBits)); 640 641 if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { 642 DPRINTF(("umodem_set_line_coding: already set\n")); 643 return (USBD_NORMAL_COMPLETION); 644 } 645 646 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 647 req.bRequest = UCDC_SET_LINE_CODING; 648 USETW(req.wValue, 0); 649 USETW(req.wIndex, sc->sc_ctl_iface_no); 650 USETW(req.wLength, UCDC_LINE_STATE_LENGTH); 651 652 err = usbd_do_request(sc->sc_udev, &req, state); 653 if (err) { 654 DPRINTF(("umodem_set_line_coding: failed, err=%s\n", 655 usbd_errstr(err))); 656 return (err); 657 } 658 659 sc->sc_line_state = *state; 660 661 return (USBD_NORMAL_COMPLETION); 662 } 663 664 usbd_status 665 umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state) 666 { 667 usb_device_request_t req; 668 usbd_status err; 669 struct usb_cdc_abstract_state ast; 670 671 DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature, 672 state)); 673 674 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 675 req.bRequest = UCDC_SET_COMM_FEATURE; 676 USETW(req.wValue, feature); 677 USETW(req.wIndex, sc->sc_ctl_iface_no); 678 USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH); 679 USETW(ast.wState, state); 680 681 err = usbd_do_request(sc->sc_udev, &req, &ast); 682 if (err) { 683 DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n", 684 feature, usbd_errstr(err))); 685 return (err); 686 } 687 688 return (USBD_NORMAL_COMPLETION); 689 } 690 691 int 692 umodem_detach(struct device *self, int flags) 693 { 694 struct umodem_softc *sc = (struct umodem_softc *)self; 695 int rv = 0; 696 697 DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags)); 698 699 if (sc->sc_notify_pipe != NULL) { 700 usbd_close_pipe(sc->sc_notify_pipe); 701 sc->sc_notify_pipe = NULL; 702 } 703 704 if (sc->sc_subdev != NULL) 705 rv = config_detach(sc->sc_subdev, flags); 706 707 return (rv); 708 } 709