umct.c revision 1.32.24.13
1 /* $NetBSD: umct.c,v 1.32.24.13 2016/05/30 06:54:17 skrll Exp $ */ 2 /* 3 * Copyright (c) 2001 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Ichiro FUKUHARA (ichiro (at) ichiro.org). 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * MCT USB-RS232 Interface Controller 33 * http://www.mct.com.tw/prod/rs232.html 34 * http://www.dlink.com/products/usb/dsbs25 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: umct.c,v 1.32.24.13 2016/05/30 06:54:17 skrll Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/ioctl.h> 44 #include <sys/conf.h> 45 #include <sys/tty.h> 46 #include <sys/file.h> 47 #include <sys/select.h> 48 #include <sys/proc.h> 49 #include <sys/vnode.h> 50 #include <sys/device.h> 51 #include <sys/poll.h> 52 53 #include <dev/usb/usb.h> 54 #include <dev/usb/usbcdc.h> 55 56 #include <dev/usb/usbdi.h> 57 #include <dev/usb/usbdi_util.h> 58 #include <dev/usb/usbdevs.h> 59 #include <dev/usb/usb_quirks.h> 60 61 #include <dev/usb/ucomvar.h> 62 #include <dev/usb/umct.h> 63 64 #ifdef UMCT_DEBUG 65 #define DPRINTFN(n, x) if (umctdebug > (n)) printf x 66 int umctdebug = 0; 67 #else 68 #define DPRINTFN(n, x) 69 #endif 70 #define DPRINTF(x) DPRINTFN(0, x) 71 72 #define UMCT_CONFIG_INDEX 0 73 #define UMCT_IFACE_INDEX 0 74 75 struct umct_softc { 76 device_t sc_dev; /* base device */ 77 struct usbd_device *sc_udev; /* USB device */ 78 struct usbd_interface *sc_iface; /* interface */ 79 int sc_iface_number; /* interface number */ 80 uint16_t sc_product; 81 82 int sc_inendpt; /* data in endpoint */ 83 struct usbd_pipe *sc_inpipe; /* data in pipe */ 84 u_char *sc_inbuf; /* interrupt buffer */ 85 86 int sc_intr_number; /* interrupt number */ 87 struct usbd_pipe *sc_intr_pipe; /* interrupt pipe */ 88 u_char *sc_intr_buf; /* interrupt buffer */ 89 int sc_isize; 90 91 usb_cdc_line_state_t sc_line_state; /* current line state */ 92 u_char sc_dtr; /* current DTR state */ 93 u_char sc_rts; /* current RTS state */ 94 u_char sc_break; /* set break */ 95 96 u_char sc_status; 97 98 device_t sc_subdev; /* ucom device */ 99 100 u_char sc_dying; /* disconnecting */ 101 102 u_char sc_lsr; /* Local status register */ 103 u_char sc_msr; /* umct status register */ 104 105 u_int last_lcr; /* keep lcr register */ 106 }; 107 108 /* 109 * These are the maximum number of bytes transferred per frame. 110 * The output buffer size cannot be increased due to the size encoding. 111 */ 112 #define UMCTIBUFSIZE 256 113 #define UMCTOBUFSIZE 256 114 115 Static void umct_init(struct umct_softc *); 116 Static void umct_set_baudrate(struct umct_softc *, u_int); 117 Static void umct_set_lcr(struct umct_softc *, u_int); 118 Static void umct_intr(struct usbd_xfer *, void *, usbd_status); 119 120 Static void umct_rxintr(struct usbd_xfer *, void *, usbd_status); 121 122 Static void umct_set(void *, int, int, int); 123 Static void umct_dtr(struct umct_softc *, int); 124 Static void umct_rts(struct umct_softc *, int); 125 Static void umct_break(struct umct_softc *, int); 126 Static void umct_set_line_state(struct umct_softc *); 127 Static void umct_get_status(void *, int, u_char *, u_char *); 128 Static int umct_param(void *, int, struct termios *); 129 Static int umct_open(void *, int); 130 Static void umct_close(void *, int); 131 132 struct ucom_methods umct_methods = { 133 .ucom_get_status = umct_get_status, 134 .ucom_set = umct_set, 135 .ucom_param = umct_param, 136 .ucom_ioctl = NULL, 137 .ucom_open = umct_open, 138 .ucom_close = umct_close, 139 .ucom_read = NULL, 140 .ucom_write = NULL, 141 }; 142 143 static const struct usb_devno umct_devs[] = { 144 /* MCT USB-232 Interface Products */ 145 { USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232 }, 146 /* Sitecom USB-232 Products */ 147 { USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232 }, 148 /* D-Link DU-H3SP USB BAY Hub Products */ 149 { USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232 }, 150 /* BELKIN F5U109 */ 151 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109 }, 152 }; 153 #define umct_lookup(v, p) usb_lookup(umct_devs, v, p) 154 155 int umct_match(device_t, cfdata_t, void *); 156 void umct_attach(device_t, device_t, void *); 157 void umct_childdet(device_t, device_t); 158 int umct_detach(device_t, int); 159 int umct_activate(device_t, enum devact); 160 extern struct cfdriver umct_cd; 161 CFATTACH_DECL2_NEW(umct, sizeof(struct umct_softc), umct_match, 162 umct_attach, umct_detach, umct_activate, NULL, umct_childdet); 163 164 int 165 umct_match(device_t parent, cfdata_t match, void *aux) 166 { 167 struct usb_attach_arg *uaa = aux; 168 169 return umct_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ? 170 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 171 } 172 173 void 174 umct_attach(device_t parent, device_t self, void *aux) 175 { 176 struct umct_softc *sc = device_private(self); 177 struct usb_attach_arg *uaa = aux; 178 struct usbd_device *dev = uaa->uaa_device; 179 usb_config_descriptor_t *cdesc; 180 usb_interface_descriptor_t *id; 181 usb_endpoint_descriptor_t *ed; 182 183 char *devinfop; 184 usbd_status err; 185 int i; 186 struct ucom_attach_args ucaa; 187 188 sc->sc_dev = self; 189 190 aprint_naive("\n"); 191 aprint_normal("\n"); 192 193 devinfop = usbd_devinfo_alloc(dev, 0); 194 aprint_normal_dev(self, "%s\n", devinfop); 195 usbd_devinfo_free(devinfop); 196 197 sc->sc_udev = dev; 198 sc->sc_product = uaa->uaa_product; 199 200 DPRINTF(("\n\numct attach: sc=%p\n", sc)); 201 202 /* initialize endpoints */ 203 ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1; 204 sc->sc_intr_number = -1; 205 sc->sc_intr_pipe = NULL; 206 207 /* Move the device into the configured state. */ 208 err = usbd_set_config_index(dev, UMCT_CONFIG_INDEX, 1); 209 if (err) { 210 aprint_error_dev(self, "failed to set configuration, err=%s\n", 211 usbd_errstr(err)); 212 sc->sc_dying = 1; 213 return; 214 } 215 216 /* get the config descriptor */ 217 cdesc = usbd_get_config_descriptor(sc->sc_udev); 218 219 if (cdesc == NULL) { 220 aprint_error_dev(self, 221 "failed to get configuration descriptor\n"); 222 sc->sc_dying = 1; 223 return; 224 } 225 226 /* get the interface */ 227 err = usbd_device2interface_handle(dev, UMCT_IFACE_INDEX, 228 &sc->sc_iface); 229 if (err) { 230 aprint_error_dev(self, "failed to get interface, err=%s\n", 231 usbd_errstr(err)); 232 sc->sc_dying = 1; 233 return; 234 } 235 236 /* Find the bulk{in,out} and interrupt endpoints */ 237 238 id = usbd_get_interface_descriptor(sc->sc_iface); 239 sc->sc_iface_number = id->bInterfaceNumber; 240 241 for (i = 0; i < id->bNumEndpoints; i++) { 242 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 243 if (ed == NULL) { 244 aprint_error_dev(self, 245 "no endpoint descriptor for %d\n", i); 246 sc->sc_dying = 1; 247 return; 248 } 249 250 /* 251 * Input is done via an interrupt endpoint, so we handle 252 * the pipe and pass RX characters up to ucom. Since 253 * we can't rely on the endpoint descriptor order, we'll 254 * check the wMaxPacketSize field to differentiate. 255 */ 256 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 257 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT && 258 UGETW(ed->wMaxPacketSize) != 0x2) { 259 sc->sc_inendpt = ed->bEndpointAddress; 260 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 261 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 262 ucaa.ucaa_bulkout = ed->bEndpointAddress; 263 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 264 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 265 sc->sc_intr_number = ed->bEndpointAddress; 266 sc->sc_isize = UGETW(ed->wMaxPacketSize); 267 } 268 } 269 270 if (sc->sc_inendpt == -1) { 271 aprint_error_dev(self, "Could not find data in\n"); 272 sc->sc_dying = 1; 273 return; 274 } 275 276 if (ucaa.ucaa_bulkout == -1) { 277 aprint_error_dev(self, "Could not find data bulk out\n"); 278 sc->sc_dying = 1; 279 return; 280 } 281 282 if (sc->sc_intr_number == -1) { 283 aprint_error_dev(self, "Could not find interrupt in\n"); 284 sc->sc_dying = 1; 285 return; 286 } 287 288 if (sc->sc_inendpt != -1) { 289 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_inendpt, 290 USBD_SHORT_XFER_OK, &sc->sc_inpipe, sc, sc->sc_inbuf, 291 sc->sc_isize, umct_rxintr, USBD_DEFAULT_INTERVAL); 292 if (err) { 293 DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n", 294 device_xname(sc->sc_dev), sc->sc_inendpt)); 295 return EIO; 296 } 297 } 298 sc->sc_dtr = sc->sc_rts = 0; 299 ucaa.ucaa_portno = UCOM_UNK_PORTNO; 300 /* ucaa_bulkin, ucaa_bulkout set above */ 301 ucaa.ucaa_ibufsize = UMCTIBUFSIZE; 302 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232) 303 ucaa.ucaa_obufsize = 16; /* device is broken */ 304 else 305 ucaa.ucaa_obufsize = UMCTOBUFSIZE; 306 ucaa.ucaa_ibufsizepad = UMCTIBUFSIZE; 307 ucaa.ucaa_opkthdrlen = 0; 308 ucaa.ucaa_device = dev; 309 ucaa.ucaa_iface = sc->sc_iface; 310 ucaa.ucaa_methods = &umct_methods; 311 ucaa.ucaa_arg = sc; 312 ucaa.ucaa_info = NULL; 313 314 umct_init(sc); 315 316 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 317 sc->sc_dev); 318 319 DPRINTF(("umct: in=0x%x out=0x%x intr=0x%x\n", 320 ucaa.ucaa_bulkin, ucaa.ucaa_bulkout, sc->sc_intr_number)); 321 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &ucaa, 322 ucomprint, ucomsubmatch); 323 324 return; 325 } 326 327 void 328 umct_childdet(device_t self, device_t child) 329 { 330 struct umct_softc *sc = device_private(self); 331 332 KASSERT(sc->sc_subdev == child); 333 sc->sc_subdev = NULL; 334 } 335 336 int 337 umct_detach(device_t self, int flags) 338 { 339 struct umct_softc *sc = device_private(self); 340 int rv = 0; 341 342 DPRINTF(("umct_detach: sc=%p flags=%d\n", sc, flags)); 343 344 if (sc->sc_intr_pipe != NULL) { 345 usbd_abort_pipe(sc->sc_intr_pipe); 346 usbd_close_pipe(sc->sc_intr_pipe); 347 kmem_free(sc->sc_intr_buf, sc->sc_isize); 348 sc->sc_intr_pipe = NULL; 349 } 350 351 sc->sc_dying = 1; 352 if (sc->sc_subdev != NULL) 353 rv = config_detach(sc->sc_subdev, flags); 354 355 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 356 sc->sc_dev); 357 358 return rv; 359 } 360 361 int 362 umct_activate(device_t self, enum devact act) 363 { 364 struct umct_softc *sc = device_private(self); 365 366 switch (act) { 367 case DVACT_DEACTIVATE: 368 sc->sc_dying = 1; 369 return 0; 370 default: 371 return EOPNOTSUPP; 372 } 373 } 374 375 void 376 umct_set_line_state(struct umct_softc *sc) 377 { 378 usb_device_request_t req; 379 uByte ls; 380 381 ls = (sc->sc_dtr ? MCR_DTR : 0) | 382 (sc->sc_rts ? MCR_RTS : 0); 383 384 DPRINTF(("umct_set_line_state: DTR=%d,RTS=%d,ls=%02x\n", 385 sc->sc_dtr, sc->sc_rts, ls)); 386 387 req.bmRequestType = UMCT_SET_REQUEST; 388 req.bRequest = REQ_SET_MCR; 389 USETW(req.wValue, 0); 390 USETW(req.wIndex, sc->sc_iface_number); 391 USETW(req.wLength, LENGTH_SET_MCR); 392 393 (void)usbd_do_request(sc->sc_udev, &req, &ls); 394 } 395 396 void 397 umct_set(void *addr, int portno, int reg, int onoff) 398 { 399 struct umct_softc *sc = addr; 400 401 switch (reg) { 402 case UCOM_SET_DTR: 403 umct_dtr(sc, onoff); 404 break; 405 case UCOM_SET_RTS: 406 umct_rts(sc, onoff); 407 break; 408 case UCOM_SET_BREAK: 409 umct_break(sc, onoff); 410 break; 411 default: 412 break; 413 } 414 } 415 416 void 417 umct_dtr(struct umct_softc *sc, int onoff) 418 { 419 420 DPRINTF(("umct_dtr: onoff=%d\n", onoff)); 421 422 if (sc->sc_dtr == onoff) 423 return; 424 sc->sc_dtr = onoff; 425 426 umct_set_line_state(sc); 427 } 428 429 void 430 umct_rts(struct umct_softc *sc, int onoff) 431 { 432 DPRINTF(("umct_rts: onoff=%d\n", onoff)); 433 434 if (sc->sc_rts == onoff) 435 return; 436 sc->sc_rts = onoff; 437 438 umct_set_line_state(sc); 439 } 440 441 void 442 umct_break(struct umct_softc *sc, int onoff) 443 { 444 DPRINTF(("umct_break: onoff=%d\n", onoff)); 445 446 umct_set_lcr(sc, onoff ? sc->last_lcr | LCR_SET_BREAK : 447 sc->last_lcr); 448 } 449 450 void 451 umct_set_lcr(struct umct_softc *sc, u_int data) 452 { 453 usb_device_request_t req; 454 uByte adata; 455 456 adata = data; 457 req.bmRequestType = UMCT_SET_REQUEST; 458 req.bRequest = REQ_SET_LCR; 459 USETW(req.wValue, 0); 460 USETW(req.wIndex, sc->sc_iface_number); 461 USETW(req.wLength, LENGTH_SET_LCR); 462 463 (void)usbd_do_request(sc->sc_udev, &req, &adata); /* XXX should check */ 464 } 465 466 void 467 umct_set_baudrate(struct umct_softc *sc, u_int rate) 468 { 469 usb_device_request_t req; 470 uDWord arate; 471 u_int val; 472 473 if (sc->sc_product == USB_PRODUCT_MCT_SITECOM_USB232 || 474 sc->sc_product == USB_PRODUCT_BELKIN_F5U109) { 475 switch (rate) { 476 case 300: val = 0x01; break; 477 case 600: val = 0x02; break; 478 case 1200: val = 0x03; break; 479 case 2400: val = 0x04; break; 480 case 4800: val = 0x06; break; 481 case 9600: val = 0x08; break; 482 case 19200: val = 0x09; break; 483 case 38400: val = 0x0a; break; 484 case 57600: val = 0x0b; break; 485 case 115200: val = 0x0c; break; 486 default: val = -1; break; 487 } 488 } else { 489 val = UMCT_BAUD_RATE(rate); 490 } 491 USETDW(arate, val); 492 493 req.bmRequestType = UMCT_SET_REQUEST; 494 req.bRequest = REQ_SET_BAUD_RATE; 495 USETW(req.wValue, 0); 496 USETW(req.wIndex, sc->sc_iface_number); 497 USETW(req.wLength, LENGTH_BAUD_RATE); 498 499 (void)usbd_do_request(sc->sc_udev, &req, arate); /* XXX should check */ 500 } 501 502 void 503 umct_init(struct umct_softc *sc) 504 { 505 umct_set_baudrate(sc, 9600); 506 umct_set_lcr(sc, LCR_DATA_BITS_8 | LCR_PARITY_NONE | LCR_STOP_BITS_1); 507 } 508 509 int 510 umct_param(void *addr, int portno, struct termios *t) 511 { 512 struct umct_softc *sc = addr; 513 u_int data = 0; 514 515 DPRINTF(("umct_param: sc=%p\n", sc)); 516 517 DPRINTF(("umct_param: BAUDRATE=%d\n", t->c_ospeed)); 518 519 if (ISSET(t->c_cflag, CSTOPB)) 520 data |= LCR_STOP_BITS_2; 521 else 522 data |= LCR_STOP_BITS_1; 523 if (ISSET(t->c_cflag, PARENB)) { 524 if (ISSET(t->c_cflag, PARODD)) 525 data |= LCR_PARITY_ODD; 526 else 527 data |= LCR_PARITY_EVEN; 528 } else 529 data |= LCR_PARITY_NONE; 530 switch (ISSET(t->c_cflag, CSIZE)) { 531 case CS5: 532 data |= LCR_DATA_BITS_5; 533 break; 534 case CS6: 535 data |= LCR_DATA_BITS_6; 536 break; 537 case CS7: 538 data |= LCR_DATA_BITS_7; 539 break; 540 case CS8: 541 data |= LCR_DATA_BITS_8; 542 break; 543 } 544 545 umct_set_baudrate(sc, t->c_ospeed); 546 547 sc->last_lcr = data; 548 umct_set_lcr(sc, data); 549 550 return 0; 551 } 552 553 int 554 umct_open(void *addr, int portno) 555 { 556 struct umct_softc *sc = addr; 557 int err, lcr_data; 558 559 if (sc->sc_dying) 560 return EIO; 561 562 DPRINTF(("umct_open: sc=%p\n", sc)); 563 564 /* initialize LCR */ 565 lcr_data = LCR_DATA_BITS_8 | LCR_PARITY_NONE | 566 LCR_STOP_BITS_1; 567 umct_set_lcr(sc, lcr_data); 568 569 if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) { 570 sc->sc_status = 0; /* clear status bit */ 571 sc->sc_intr_buf = kmem_alloc(sc->sc_isize, KM_SLEEP); 572 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_number, 573 USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, 574 sc->sc_intr_buf, sc->sc_isize, 575 umct_intr, USBD_DEFAULT_INTERVAL); 576 if (err) { 577 DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n", 578 device_xname(sc->sc_dev), sc->sc_intr_number)); 579 return EIO; 580 } 581 } 582 583 return 0; 584 } 585 586 void 587 umct_close(void *addr, int portno) 588 { 589 struct umct_softc *sc = addr; 590 int err; 591 592 if (sc->sc_dying) 593 return; 594 595 DPRINTF(("umct_close: close\n")); 596 597 if (sc->sc_intr_pipe != NULL) { 598 err = usbd_abort_pipe(sc->sc_intr_pipe); 599 if (err) 600 printf("%s: abort interrupt pipe failed: %s\n", 601 device_xname(sc->sc_dev), usbd_errstr(err)); 602 err = usbd_close_pipe(sc->sc_intr_pipe); 603 if (err) 604 printf("%s: close interrupt pipe failed: %s\n", 605 device_xname(sc->sc_dev), usbd_errstr(err)); 606 kmem_free(sc->sc_intr_buf, sc->sc_isize); 607 sc->sc_intr_pipe = NULL; 608 } 609 } 610 611 void 612 umct_rxintr(struct usbd_xfer *xfer, void *priv, usbd_status status) 613 { 614 struct umct_softc *sc = priv; 615 616 if (sc->sc_dying) 617 return; 618 619 ucomreadcb(xfer, device_private(sc->sc_subdev), status); 620 } 621 622 void 623 umct_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 624 { 625 struct umct_softc *sc = priv; 626 u_char *tbuf = sc->sc_intr_buf; 627 u_char mstatus; 628 629 if (sc->sc_dying) 630 return; 631 632 if (status != USBD_NORMAL_COMPLETION) { 633 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 634 return; 635 636 DPRINTF(("%s: abnormal status: %s\n", device_xname(sc->sc_dev), 637 usbd_errstr(status))); 638 usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); 639 return; 640 } 641 642 DPRINTF(("%s: umct status = MSR:%02x, LSR:%02x\n", 643 device_xname(sc->sc_dev), tbuf[0],tbuf[1])); 644 645 sc->sc_lsr = sc->sc_msr = 0; 646 mstatus = tbuf[0]; 647 if (ISSET(mstatus, MSR_DSR)) 648 sc->sc_msr |= UMSR_DSR; 649 if (ISSET(mstatus, MSR_DCD)) 650 sc->sc_msr |= UMSR_DCD; 651 ucom_status_change(device_private(sc->sc_subdev)); 652 } 653 654 void 655 umct_get_status(void *addr, int portno, u_char *lsr, u_char *msr) 656 { 657 struct umct_softc *sc = addr; 658 659 DPRINTF(("umct_get_status:\n")); 660 661 if (lsr != NULL) 662 *lsr = sc->sc_lsr; 663 if (msr != NULL) 664 *msr = sc->sc_msr; 665 } 666
Indexes created Thu Oct 02 10:09:58 GMT 2025