ucom.c revision 1.87.4.4
1 /* $NetBSD: ucom.c,v 1.87.4.4 2014/05/22 11:40:37 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2000 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 * This code is very heavily based on the 16550 driver, com.c. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.87.4.4 2014/05/22 11:40:37 yamt Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/ioctl.h> 43 #include <sys/conf.h> 44 #include <sys/tty.h> 45 #include <sys/file.h> 46 #include <sys/select.h> 47 #include <sys/proc.h> 48 #include <sys/vnode.h> 49 #include <sys/device.h> 50 #include <sys/poll.h> 51 #include <sys/queue.h> 52 #include <sys/kauth.h> 53 #include <sys/rnd.h> 54 55 #include <dev/usb/usb.h> 56 57 #include <dev/usb/usbdi.h> 58 #include <dev/usb/usbdi_util.h> 59 #include <dev/usb/usbdevs.h> 60 #include <dev/usb/usb_quirks.h> 61 62 #include <dev/usb/ucomvar.h> 63 64 #include "ucom.h" 65 66 #include "locators.h" 67 68 #if NUCOM > 0 69 70 #ifdef UCOM_DEBUG 71 #define DPRINTFN(n, x) if (ucomdebug > (n)) printf x 72 int ucomdebug = 0; 73 #else 74 #define DPRINTFN(n, x) 75 #endif 76 #define DPRINTF(x) DPRINTFN(0, x) 77 78 #define UCOMUNIT_MASK 0x3ffff 79 #define UCOMDIALOUT_MASK 0x80000 80 #define UCOMCALLUNIT_MASK 0x40000 81 82 #define UCOMUNIT(x) (minor(x) & UCOMUNIT_MASK) 83 #define UCOMDIALOUT(x) (minor(x) & UCOMDIALOUT_MASK) 84 #define UCOMCALLUNIT(x) (minor(x) & UCOMCALLUNIT_MASK) 85 86 /* 87 * XXX: We can submit multiple input/output buffers to the usb stack 88 * to improve throughput, but the usb stack is too lame to deal with this 89 * in a number of places. 90 */ 91 #define UCOM_IN_BUFFS 1 92 #define UCOM_OUT_BUFFS 1 93 94 struct ucom_buffer { 95 SIMPLEQ_ENTRY(ucom_buffer) ub_link; 96 usbd_xfer_handle ub_xfer; 97 u_char *ub_data; 98 u_int ub_len; 99 u_int ub_index; 100 }; 101 102 struct ucom_softc { 103 device_t sc_dev; /* base device */ 104 105 usbd_device_handle sc_udev; /* USB device */ 106 107 usbd_interface_handle sc_iface; /* data interface */ 108 109 int sc_bulkin_no; /* bulk in endpoint address */ 110 usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */ 111 u_int sc_ibufsize; /* read buffer size */ 112 u_int sc_ibufsizepad; /* read buffer size padded */ 113 struct ucom_buffer sc_ibuff[UCOM_IN_BUFFS]; 114 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_empty; 115 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_full; 116 117 int sc_bulkout_no; /* bulk out endpoint address */ 118 usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */ 119 u_int sc_obufsize; /* write buffer size */ 120 u_int sc_opkthdrlen; /* header length of */ 121 struct ucom_buffer sc_obuff[UCOM_OUT_BUFFS]; 122 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_free; 123 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_full; 124 125 void *sc_si; 126 127 const struct ucom_methods *sc_methods; 128 void *sc_parent; 129 int sc_portno; 130 131 struct tty *sc_tty; /* our tty */ 132 u_char sc_lsr; 133 u_char sc_msr; 134 u_char sc_mcr; 135 volatile u_char sc_rx_stopped; 136 u_char sc_rx_unblock; 137 u_char sc_tx_stopped; 138 int sc_swflags; 139 140 u_char sc_opening; /* lock during open */ 141 int sc_refcnt; 142 u_char sc_dying; /* disconnecting */ 143 144 krndsource_t sc_rndsource; /* random source */ 145 }; 146 147 dev_type_open(ucomopen); 148 dev_type_close(ucomclose); 149 dev_type_read(ucomread); 150 dev_type_write(ucomwrite); 151 dev_type_ioctl(ucomioctl); 152 dev_type_stop(ucomstop); 153 dev_type_tty(ucomtty); 154 dev_type_poll(ucompoll); 155 156 const struct cdevsw ucom_cdevsw = { 157 .d_open = ucomopen, 158 .d_close = ucomclose, 159 .d_read = ucomread, 160 .d_write = ucomwrite, 161 .d_ioctl = ucomioctl, 162 .d_stop = ucomstop, 163 .d_tty = ucomtty, 164 .d_poll = ucompoll, 165 .d_mmap = nommap, 166 .d_kqfilter = ttykqfilter, 167 .d_flag = D_TTY 168 }; 169 170 static void ucom_cleanup(struct ucom_softc *); 171 static int ucomparam(struct tty *, struct termios *); 172 static int ucomhwiflow(struct tty *, int); 173 static void ucomstart(struct tty *); 174 static void ucom_shutdown(struct ucom_softc *); 175 static int ucom_do_ioctl(struct ucom_softc *, u_long, void *, 176 int, struct lwp *); 177 static void ucom_dtr(struct ucom_softc *, int); 178 static void ucom_rts(struct ucom_softc *, int); 179 static void ucom_break(struct ucom_softc *, int); 180 static void tiocm_to_ucom(struct ucom_softc *, u_long, int); 181 static int ucom_to_tiocm(struct ucom_softc *); 182 183 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); 184 static void ucom_submit_write(struct ucom_softc *, struct ucom_buffer *); 185 static void ucom_write_status(struct ucom_softc *, struct ucom_buffer *, 186 usbd_status); 187 188 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); 189 static void ucom_read_complete(struct ucom_softc *); 190 static usbd_status ucomsubmitread(struct ucom_softc *, struct ucom_buffer *); 191 static void ucom_softintr(void *); 192 193 int ucom_match(device_t, cfdata_t, void *); 194 void ucom_attach(device_t, device_t, void *); 195 int ucom_detach(device_t, int); 196 int ucom_activate(device_t, enum devact); 197 extern struct cfdriver ucom_cd; 198 CFATTACH_DECL_NEW(ucom, sizeof(struct ucom_softc), ucom_match, ucom_attach, 199 ucom_detach, ucom_activate); 200 201 int 202 ucom_match(device_t parent, cfdata_t match, void *aux) 203 { 204 return (1); 205 } 206 207 void 208 ucom_attach(device_t parent, device_t self, void *aux) 209 { 210 struct ucom_softc *sc = device_private(self); 211 struct ucom_attach_args *uca = aux; 212 struct tty *tp; 213 214 if (uca->info != NULL) 215 aprint_normal(": %s", uca->info); 216 aprint_normal("\n"); 217 218 sc->sc_dev = self; 219 sc->sc_udev = uca->device; 220 sc->sc_iface = uca->iface; 221 sc->sc_bulkout_no = uca->bulkout; 222 sc->sc_bulkin_no = uca->bulkin; 223 sc->sc_ibufsize = uca->ibufsize; 224 sc->sc_ibufsizepad = uca->ibufsizepad; 225 sc->sc_obufsize = uca->obufsize; 226 sc->sc_opkthdrlen = uca->opkthdrlen; 227 sc->sc_methods = uca->methods; 228 sc->sc_parent = uca->arg; 229 sc->sc_portno = uca->portno; 230 231 sc->sc_lsr = 0; 232 sc->sc_msr = 0; 233 sc->sc_mcr = 0; 234 sc->sc_tx_stopped = 0; 235 sc->sc_swflags = 0; 236 sc->sc_opening = 0; 237 sc->sc_refcnt = 0; 238 sc->sc_dying = 0; 239 240 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc); 241 242 tp = tty_alloc(); 243 tp->t_oproc = ucomstart; 244 tp->t_param = ucomparam; 245 tp->t_hwiflow = ucomhwiflow; 246 sc->sc_tty = tp; 247 248 DPRINTF(("ucom_attach: tty_attach %p\n", tp)); 249 tty_attach(tp); 250 251 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 252 RND_TYPE_TTY, 0); 253 254 if (!pmf_device_register(self, NULL, NULL)) 255 aprint_error_dev(self, "couldn't establish power handler\n"); 256 return; 257 } 258 259 int 260 ucom_detach(device_t self, int flags) 261 { 262 struct ucom_softc *sc = device_private(self); 263 struct tty *tp = sc->sc_tty; 264 int maj, mn; 265 int s, i; 266 267 DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n", 268 sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no)); 269 270 sc->sc_dying = 1; 271 pmf_device_deregister(self); 272 273 if (sc->sc_bulkin_pipe != NULL) 274 usbd_abort_pipe(sc->sc_bulkin_pipe); 275 if (sc->sc_bulkout_pipe != NULL) 276 usbd_abort_pipe(sc->sc_bulkout_pipe); 277 278 s = splusb(); 279 if (--sc->sc_refcnt >= 0) { 280 /* Wake up anyone waiting */ 281 if (tp != NULL) { 282 mutex_spin_enter(&tty_lock); 283 CLR(tp->t_state, TS_CARR_ON); 284 CLR(tp->t_cflag, CLOCAL | MDMBUF); 285 ttyflush(tp, FREAD|FWRITE); 286 mutex_spin_exit(&tty_lock); 287 } 288 /* Wait for processes to go away. */ 289 usb_detach_waitold(sc->sc_dev); 290 } 291 292 softint_disestablish(sc->sc_si); 293 splx(s); 294 295 /* locate the major number */ 296 maj = cdevsw_lookup_major(&ucom_cdevsw); 297 298 /* Nuke the vnodes for any open instances. */ 299 mn = device_unit(self); 300 DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn)); 301 vdevgone(maj, mn, mn, VCHR); 302 vdevgone(maj, mn | UCOMDIALOUT_MASK, mn | UCOMDIALOUT_MASK, VCHR); 303 vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR); 304 305 /* Detach and free the tty. */ 306 if (tp != NULL) { 307 tty_detach(tp); 308 tty_free(tp); 309 sc->sc_tty = NULL; 310 } 311 312 for (i = 0; i < UCOM_IN_BUFFS; i++) { 313 if (sc->sc_ibuff[i].ub_xfer != NULL) 314 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 315 } 316 317 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 318 if (sc->sc_obuff[i].ub_xfer != NULL) 319 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 320 } 321 322 /* Detach the random source */ 323 rnd_detach_source(&sc->sc_rndsource); 324 325 return (0); 326 } 327 328 int 329 ucom_activate(device_t self, enum devact act) 330 { 331 struct ucom_softc *sc = device_private(self); 332 333 DPRINTFN(5,("ucom_activate: %d\n", act)); 334 335 switch (act) { 336 case DVACT_DEACTIVATE: 337 sc->sc_dying = 1; 338 return 0; 339 default: 340 return EOPNOTSUPP; 341 } 342 } 343 344 void 345 ucom_shutdown(struct ucom_softc *sc) 346 { 347 struct tty *tp = sc->sc_tty; 348 349 DPRINTF(("ucom_shutdown\n")); 350 /* 351 * Hang up if necessary. Wait a bit, so the other side has time to 352 * notice even if we immediately open the port again. 353 */ 354 if (ISSET(tp->t_cflag, HUPCL)) { 355 ucom_dtr(sc, 0); 356 (void)tsleep(sc, TTIPRI, ttclos, hz); 357 } 358 } 359 360 int 361 ucomopen(dev_t dev, int flag, int mode, struct lwp *l) 362 { 363 int unit = UCOMUNIT(dev); 364 usbd_status err; 365 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit); 366 struct ucom_buffer *ub; 367 struct tty *tp; 368 int s, i; 369 int error; 370 371 if (sc == NULL) 372 return (ENXIO); 373 374 if (sc->sc_dying) 375 return (EIO); 376 377 if (!device_is_active(sc->sc_dev)) 378 return (ENXIO); 379 380 tp = sc->sc_tty; 381 382 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp)); 383 384 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 385 return (EBUSY); 386 387 s = spltty(); 388 389 /* 390 * Do the following iff this is a first open. 391 */ 392 while (sc->sc_opening) 393 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0); 394 395 if (sc->sc_dying) { 396 splx(s); 397 return (EIO); 398 } 399 sc->sc_opening = 1; 400 401 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 402 struct termios t; 403 404 tp->t_dev = dev; 405 406 if (sc->sc_methods->ucom_open != NULL) { 407 error = sc->sc_methods->ucom_open(sc->sc_parent, 408 sc->sc_portno); 409 if (error) { 410 ucom_cleanup(sc); 411 sc->sc_opening = 0; 412 wakeup(&sc->sc_opening); 413 splx(s); 414 return (error); 415 } 416 } 417 418 ucom_status_change(sc); 419 420 /* 421 * Initialize the termios status to the defaults. Add in the 422 * sticky bits from TIOCSFLAGS. 423 */ 424 t.c_ispeed = 0; 425 t.c_ospeed = TTYDEF_SPEED; 426 t.c_cflag = TTYDEF_CFLAG; 427 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 428 SET(t.c_cflag, CLOCAL); 429 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 430 SET(t.c_cflag, CRTSCTS); 431 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 432 SET(t.c_cflag, MDMBUF); 433 /* Make sure ucomparam() will do something. */ 434 tp->t_ospeed = 0; 435 (void) ucomparam(tp, &t); 436 tp->t_iflag = TTYDEF_IFLAG; 437 tp->t_oflag = TTYDEF_OFLAG; 438 tp->t_lflag = TTYDEF_LFLAG; 439 ttychars(tp); 440 ttsetwater(tp); 441 442 /* 443 * Turn on DTR. We must always do this, even if carrier is not 444 * present, because otherwise we'd have to use TIOCSDTR 445 * immediately after setting CLOCAL, which applications do not 446 * expect. We always assert DTR while the device is open 447 * unless explicitly requested to deassert it. Ditto RTS. 448 */ 449 ucom_dtr(sc, 1); 450 ucom_rts(sc, 1); 451 452 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 453 sc->sc_bulkin_no, sc->sc_bulkout_no)); 454 455 /* Open the bulk pipes */ 456 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 457 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 458 if (err) { 459 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 460 device_xname(sc->sc_dev), sc->sc_bulkin_no, 461 usbd_errstr(err))); 462 error = EIO; 463 goto fail_0; 464 } 465 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 466 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 467 if (err) { 468 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 469 device_xname(sc->sc_dev), sc->sc_bulkout_no, 470 usbd_errstr(err))); 471 error = EIO; 472 goto fail_1; 473 } 474 475 sc->sc_rx_unblock = 0; 476 sc->sc_rx_stopped = 0; 477 sc->sc_tx_stopped = 0; 478 479 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 480 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 481 482 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 483 SIMPLEQ_INIT(&sc->sc_ibuff_full); 484 SIMPLEQ_INIT(&sc->sc_obuff_free); 485 SIMPLEQ_INIT(&sc->sc_obuff_full); 486 487 /* Allocate input buffers */ 488 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 489 ub++) { 490 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 491 if (ub->ub_xfer == NULL) { 492 error = ENOMEM; 493 goto fail_2; 494 } 495 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 496 sc->sc_ibufsizepad); 497 if (ub->ub_data == NULL) { 498 error = ENOMEM; 499 goto fail_2; 500 } 501 502 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 503 error = EIO; 504 goto fail_2; 505 } 506 } 507 508 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 509 ub++) { 510 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 511 if (ub->ub_xfer == NULL) { 512 error = ENOMEM; 513 goto fail_2; 514 } 515 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 516 sc->sc_obufsize); 517 if (ub->ub_data == NULL) { 518 error = ENOMEM; 519 goto fail_2; 520 } 521 522 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 523 } 524 525 } 526 sc->sc_opening = 0; 527 wakeup(&sc->sc_opening); 528 splx(s); 529 530 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 531 if (error) 532 goto bad; 533 534 error = (*tp->t_linesw->l_open)(dev, tp); 535 if (error) 536 goto bad; 537 538 return (0); 539 540 fail_2: 541 usbd_abort_pipe(sc->sc_bulkin_pipe); 542 for (i = 0; i < UCOM_IN_BUFFS; i++) { 543 if (sc->sc_ibuff[i].ub_xfer != NULL) { 544 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 545 sc->sc_ibuff[i].ub_xfer = NULL; 546 sc->sc_ibuff[i].ub_data = NULL; 547 } 548 } 549 usbd_abort_pipe(sc->sc_bulkout_pipe); 550 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 551 if (sc->sc_obuff[i].ub_xfer != NULL) { 552 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 553 sc->sc_obuff[i].ub_xfer = NULL; 554 sc->sc_obuff[i].ub_data = NULL; 555 } 556 } 557 558 usbd_close_pipe(sc->sc_bulkout_pipe); 559 sc->sc_bulkout_pipe = NULL; 560 fail_1: 561 usbd_close_pipe(sc->sc_bulkin_pipe); 562 sc->sc_bulkin_pipe = NULL; 563 fail_0: 564 sc->sc_opening = 0; 565 wakeup(&sc->sc_opening); 566 splx(s); 567 return (error); 568 569 bad: 570 s = spltty(); 571 CLR(tp->t_state, TS_BUSY); 572 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 573 /* 574 * We failed to open the device, and nobody else had it opened. 575 * Clean up the state as appropriate. 576 */ 577 ucom_cleanup(sc); 578 } 579 splx(s); 580 581 return (error); 582 } 583 584 int 585 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 586 { 587 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 588 struct tty *tp; 589 int s; 590 591 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 592 593 if (sc == NULL) 594 return 0; 595 596 tp = sc->sc_tty; 597 598 if (!ISSET(tp->t_state, TS_ISOPEN)) 599 return (0); 600 601 s = spltty(); 602 sc->sc_refcnt++; 603 604 (*tp->t_linesw->l_close)(tp, flag); 605 ttyclose(tp); 606 607 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 608 /* 609 * Although we got a last close, the device may still be in 610 * use; e.g. if this was the dialout node, and there are still 611 * processes waiting for carrier on the non-dialout node. 612 */ 613 ucom_cleanup(sc); 614 } 615 616 if (sc->sc_methods->ucom_close != NULL) 617 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno); 618 619 if (--sc->sc_refcnt < 0) 620 usb_detach_wakeupold(sc->sc_dev); 621 splx(s); 622 623 return (0); 624 } 625 626 int 627 ucomread(dev_t dev, struct uio *uio, int flag) 628 { 629 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 630 struct tty *tp; 631 int error; 632 633 if (sc == NULL || sc->sc_dying) 634 return (EIO); 635 636 tp = sc->sc_tty; 637 638 sc->sc_refcnt++; 639 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 640 if (--sc->sc_refcnt < 0) 641 usb_detach_wakeupold(sc->sc_dev); 642 return (error); 643 } 644 645 int 646 ucomwrite(dev_t dev, struct uio *uio, int flag) 647 { 648 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 649 struct tty *tp; 650 int error; 651 652 if (sc == NULL || sc->sc_dying) 653 return (EIO); 654 655 tp = sc->sc_tty; 656 657 sc->sc_refcnt++; 658 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 659 if (--sc->sc_refcnt < 0) 660 usb_detach_wakeupold(sc->sc_dev); 661 return (error); 662 } 663 664 int 665 ucompoll(dev_t dev, int events, struct lwp *l) 666 { 667 struct ucom_softc *sc; 668 struct tty *tp; 669 int revents; 670 671 sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 672 if (sc == NULL || sc->sc_dying) 673 return (POLLHUP); 674 675 tp = sc->sc_tty; 676 677 sc->sc_refcnt++; 678 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 679 if (--sc->sc_refcnt < 0) 680 usb_detach_wakeupold(sc->sc_dev); 681 return (revents); 682 } 683 684 struct tty * 685 ucomtty(dev_t dev) 686 { 687 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 688 689 return ((sc != NULL) ? sc->sc_tty : NULL); 690 } 691 692 int 693 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 694 { 695 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 696 int error; 697 698 if (sc == NULL || sc->sc_dying) 699 return (EIO); 700 701 sc->sc_refcnt++; 702 error = ucom_do_ioctl(sc, cmd, data, flag, l); 703 if (--sc->sc_refcnt < 0) 704 usb_detach_wakeupold(sc->sc_dev); 705 return (error); 706 } 707 708 static int 709 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 710 int flag, struct lwp *l) 711 { 712 struct tty *tp = sc->sc_tty; 713 int error; 714 int s; 715 716 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 717 718 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 719 if (error != EPASSTHROUGH) 720 return (error); 721 722 error = ttioctl(tp, cmd, data, flag, l); 723 if (error != EPASSTHROUGH) 724 return (error); 725 726 if (sc->sc_methods->ucom_ioctl != NULL) { 727 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 728 sc->sc_portno, cmd, data, flag, l->l_proc); 729 if (error != EPASSTHROUGH) 730 return (error); 731 } 732 733 error = 0; 734 735 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 736 s = spltty(); 737 738 switch (cmd) { 739 case TIOCSBRK: 740 ucom_break(sc, 1); 741 break; 742 743 case TIOCCBRK: 744 ucom_break(sc, 0); 745 break; 746 747 case TIOCSDTR: 748 ucom_dtr(sc, 1); 749 break; 750 751 case TIOCCDTR: 752 ucom_dtr(sc, 0); 753 break; 754 755 case TIOCGFLAGS: 756 *(int *)data = sc->sc_swflags; 757 break; 758 759 case TIOCSFLAGS: 760 error = kauth_authorize_device_tty(l->l_cred, 761 KAUTH_DEVICE_TTY_PRIVSET, tp); 762 if (error) 763 break; 764 sc->sc_swflags = *(int *)data; 765 break; 766 767 case TIOCMSET: 768 case TIOCMBIS: 769 case TIOCMBIC: 770 tiocm_to_ucom(sc, cmd, *(int *)data); 771 break; 772 773 case TIOCMGET: 774 *(int *)data = ucom_to_tiocm(sc); 775 break; 776 777 default: 778 error = EPASSTHROUGH; 779 break; 780 } 781 782 splx(s); 783 784 return (error); 785 } 786 787 static void 788 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 789 { 790 u_char combits; 791 792 combits = 0; 793 if (ISSET(ttybits, TIOCM_DTR)) 794 SET(combits, UMCR_DTR); 795 if (ISSET(ttybits, TIOCM_RTS)) 796 SET(combits, UMCR_RTS); 797 798 switch (how) { 799 case TIOCMBIC: 800 CLR(sc->sc_mcr, combits); 801 break; 802 803 case TIOCMBIS: 804 SET(sc->sc_mcr, combits); 805 break; 806 807 case TIOCMSET: 808 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 809 SET(sc->sc_mcr, combits); 810 break; 811 } 812 813 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 814 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 815 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 816 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 817 } 818 819 static int 820 ucom_to_tiocm(struct ucom_softc *sc) 821 { 822 u_char combits; 823 int ttybits = 0; 824 825 combits = sc->sc_mcr; 826 if (ISSET(combits, UMCR_DTR)) 827 SET(ttybits, TIOCM_DTR); 828 if (ISSET(combits, UMCR_RTS)) 829 SET(ttybits, TIOCM_RTS); 830 831 combits = sc->sc_msr; 832 if (ISSET(combits, UMSR_DCD)) 833 SET(ttybits, TIOCM_CD); 834 if (ISSET(combits, UMSR_CTS)) 835 SET(ttybits, TIOCM_CTS); 836 if (ISSET(combits, UMSR_DSR)) 837 SET(ttybits, TIOCM_DSR); 838 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 839 SET(ttybits, TIOCM_RI); 840 841 #if 0 842 XXX; 843 if (sc->sc_ier != 0) 844 SET(ttybits, TIOCM_LE); 845 #endif 846 847 return (ttybits); 848 } 849 850 static void 851 ucom_break(struct ucom_softc *sc, int onoff) 852 { 853 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 854 855 if (sc->sc_methods->ucom_set != NULL) 856 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 857 UCOM_SET_BREAK, onoff); 858 } 859 860 static void 861 ucom_dtr(struct ucom_softc *sc, int onoff) 862 { 863 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 864 865 if (sc->sc_methods->ucom_set != NULL) 866 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 867 UCOM_SET_DTR, onoff); 868 } 869 870 static void 871 ucom_rts(struct ucom_softc *sc, int onoff) 872 { 873 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 874 875 if (sc->sc_methods->ucom_set != NULL) 876 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 877 UCOM_SET_RTS, onoff); 878 } 879 880 void 881 ucom_status_change(struct ucom_softc *sc) 882 { 883 struct tty *tp = sc->sc_tty; 884 u_char old_msr; 885 886 if (sc->sc_methods->ucom_get_status != NULL) { 887 old_msr = sc->sc_msr; 888 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 889 &sc->sc_lsr, &sc->sc_msr); 890 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) 891 (*tp->t_linesw->l_modem)(tp, 892 ISSET(sc->sc_msr, UMSR_DCD)); 893 } else { 894 sc->sc_lsr = 0; 895 /* Assume DCD is present, if we have no chance to check it. */ 896 sc->sc_msr = UMSR_DCD; 897 } 898 } 899 900 static int 901 ucomparam(struct tty *tp, struct termios *t) 902 { 903 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 904 UCOMUNIT(tp->t_dev)); 905 int error; 906 907 if (sc == NULL || sc->sc_dying) 908 return (EIO); 909 910 /* Check requested parameters. */ 911 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 912 return (EINVAL); 913 914 /* 915 * For the console, always force CLOCAL and !HUPCL, so that the port 916 * is always active. 917 */ 918 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 919 SET(t->c_cflag, CLOCAL); 920 CLR(t->c_cflag, HUPCL); 921 } 922 923 /* 924 * If there were no changes, don't do anything. This avoids dropping 925 * input and improves performance when all we did was frob things like 926 * VMIN and VTIME. 927 */ 928 if (tp->t_ospeed == t->c_ospeed && 929 tp->t_cflag == t->c_cflag) 930 return (0); 931 932 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 933 934 /* And copy to tty. */ 935 tp->t_ispeed = 0; 936 tp->t_ospeed = t->c_ospeed; 937 tp->t_cflag = t->c_cflag; 938 939 if (sc->sc_methods->ucom_param != NULL) { 940 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 941 t); 942 if (error) 943 return (error); 944 } 945 946 /* XXX worry about CHWFLOW */ 947 948 /* 949 * Update the tty layer's idea of the carrier bit, in case we changed 950 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 951 * explicit request. 952 */ 953 DPRINTF(("ucomparam: l_modem\n")); 954 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 955 956 #if 0 957 XXX what if the hardware is not open 958 if (!ISSET(t->c_cflag, CHWFLOW)) { 959 if (sc->sc_tx_stopped) { 960 sc->sc_tx_stopped = 0; 961 ucomstart(tp); 962 } 963 } 964 #endif 965 966 return (0); 967 } 968 969 static int 970 ucomhwiflow(struct tty *tp, int block) 971 { 972 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 973 UCOMUNIT(tp->t_dev)); 974 int old; 975 976 if (sc == NULL) 977 return (0); 978 979 old = sc->sc_rx_stopped; 980 sc->sc_rx_stopped = (u_char)block; 981 982 if (old && !block) { 983 int s = splusb(); 984 sc->sc_rx_unblock = 1; 985 softint_schedule(sc->sc_si); 986 splx(s); 987 } 988 989 return (1); 990 } 991 992 static void 993 ucomstart(struct tty *tp) 994 { 995 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 996 UCOMUNIT(tp->t_dev)); 997 struct ucom_buffer *ub; 998 int s; 999 u_char *data; 1000 int cnt; 1001 1002 if (sc == NULL || sc->sc_dying) 1003 return; 1004 1005 s = spltty(); 1006 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1007 goto out; 1008 if (sc->sc_tx_stopped) 1009 goto out; 1010 1011 if (!ttypull(tp)) 1012 goto out; 1013 1014 /* Grab the first contiguous region of buffer space. */ 1015 data = tp->t_outq.c_cf; 1016 cnt = ndqb(&tp->t_outq, 0); 1017 1018 if (cnt == 0) 1019 goto out; 1020 1021 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1022 if (ub == NULL) { 1023 SET(tp->t_state, TS_BUSY); 1024 goto out; 1025 } 1026 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1027 1028 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1029 SET(tp->t_state, TS_BUSY); 1030 1031 if (cnt > sc->sc_obufsize) 1032 cnt = sc->sc_obufsize; 1033 1034 if (sc->sc_methods->ucom_write != NULL) 1035 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1036 ub->ub_data, data, &cnt); 1037 else 1038 memcpy(ub->ub_data, data, cnt); 1039 1040 ub->ub_len = cnt; 1041 ub->ub_index = 0; 1042 1043 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1044 1045 softint_schedule(sc->sc_si); 1046 1047 out: 1048 splx(s); 1049 } 1050 1051 void 1052 ucomstop(struct tty *tp, int flag) 1053 { 1054 #if 0 1055 /*struct ucom_softc *sc = 1056 device_lookup_private(&ucom_cd, UCOMUNIT(tp->t_dev));*/ 1057 int s; 1058 1059 s = spltty(); 1060 if (ISSET(tp->t_state, TS_BUSY)) { 1061 /* sc->sc_tx_stopped = 1; */ 1062 if (!ISSET(tp->t_state, TS_TTSTOP)) 1063 SET(tp->t_state, TS_FLUSH); 1064 } 1065 splx(s); 1066 #endif 1067 } 1068 1069 static void 1070 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1071 usbd_status err) 1072 { 1073 struct tty *tp = sc->sc_tty; 1074 uint32_t cc = ub->ub_len; 1075 1076 switch (err) { 1077 case USBD_IN_PROGRESS: 1078 ub->ub_index = ub->ub_len; 1079 break; 1080 case USBD_STALLED: 1081 ub->ub_index = 0; 1082 softint_schedule(sc->sc_si); 1083 break; 1084 case USBD_NORMAL_COMPLETION: 1085 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1086 rnd_add_uint32(&sc->sc_rndsource, cc); 1087 /*FALLTHROUGH*/ 1088 default: 1089 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1090 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1091 cc -= sc->sc_opkthdrlen; 1092 1093 mutex_spin_enter(&tty_lock); 1094 CLR(tp->t_state, TS_BUSY); 1095 if (ISSET(tp->t_state, TS_FLUSH)) 1096 CLR(tp->t_state, TS_FLUSH); 1097 else 1098 ndflush(&tp->t_outq, cc); 1099 mutex_spin_exit(&tty_lock); 1100 1101 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1102 !sc->sc_dying) { 1103 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1104 ucom_submit_write(sc, ub); 1105 1106 (*tp->t_linesw->l_start)(tp); 1107 } 1108 break; 1109 } 1110 } 1111 1112 /* Call at spltty() */ 1113 static void 1114 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1115 { 1116 1117 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1118 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1119 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1120 1121 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1122 } 1123 1124 static void 1125 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1126 { 1127 struct ucom_softc *sc = (struct ucom_softc *)p; 1128 int s; 1129 1130 s = spltty(); 1131 1132 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1133 1134 splx(s); 1135 } 1136 1137 static void 1138 ucom_softintr(void *arg) 1139 { 1140 struct ucom_softc *sc = arg; 1141 struct tty *tp = sc->sc_tty; 1142 struct ucom_buffer *ub; 1143 int s; 1144 1145 if (!ISSET(tp->t_state, TS_ISOPEN)) 1146 return; 1147 1148 s = spltty(); 1149 1150 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1151 1152 if (ub != NULL && ub->ub_index == 0) 1153 ucom_submit_write(sc, ub); 1154 1155 if (sc->sc_rx_unblock) 1156 ucom_read_complete(sc); 1157 1158 splx(s); 1159 } 1160 1161 static void 1162 ucom_read_complete(struct ucom_softc *sc) 1163 { 1164 int (*rint)(int, struct tty *); 1165 struct ucom_buffer *ub; 1166 struct tty *tp; 1167 int s; 1168 1169 tp = sc->sc_tty; 1170 rint = tp->t_linesw->l_rint; 1171 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1172 1173 while (ub != NULL && !sc->sc_rx_stopped) { 1174 1175 s = spltty(); 1176 1177 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1178 /* Give characters to tty layer. */ 1179 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1180 /* Overflow: drop remainder */ 1181 ub->ub_index = ub->ub_len; 1182 } else 1183 ub->ub_index++; 1184 } 1185 1186 splx(s); 1187 1188 if (ub->ub_index == ub->ub_len) { 1189 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1190 1191 ucomsubmitread(sc, ub); 1192 1193 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1194 } 1195 } 1196 1197 sc->sc_rx_unblock = (ub != NULL); 1198 } 1199 1200 static usbd_status 1201 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1202 { 1203 usbd_status err; 1204 1205 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1206 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1207 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1208 1209 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1210 /* XXX: Recover from this, please! */ 1211 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1212 return (err); 1213 } 1214 1215 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1216 1217 return (USBD_NORMAL_COMPLETION); 1218 } 1219 1220 static void 1221 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1222 { 1223 struct ucom_softc *sc = (struct ucom_softc *)p; 1224 struct tty *tp = sc->sc_tty; 1225 struct ucom_buffer *ub; 1226 u_int32_t cc; 1227 u_char *cp; 1228 int s; 1229 1230 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1231 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1232 1233 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1234 sc->sc_dying) { 1235 DPRINTF(("ucomreadcb: dying\n")); 1236 ub->ub_index = ub->ub_len = 0; 1237 /* Send something to wake upper layer */ 1238 s = spltty(); 1239 if (status != USBD_CANCELLED) { 1240 (tp->t_linesw->l_rint)('\n', tp); 1241 mutex_spin_enter(&tty_lock); /* XXX */ 1242 ttwakeup(tp); 1243 mutex_spin_exit(&tty_lock); /* XXX */ 1244 } 1245 splx(s); 1246 return; 1247 } 1248 1249 if (status == USBD_STALLED) { 1250 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1251 ucomsubmitread(sc, ub); 1252 return; 1253 } 1254 1255 if (status != USBD_NORMAL_COMPLETION) { 1256 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1257 return; 1258 } 1259 1260 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1261 1262 #ifdef UCOM_DEBUG 1263 /* This is triggered by uslsa(4) occasionally. */ 1264 if ((ucomdebug > 0) && (cc == 0)) { 1265 device_printf(sc->sc_dev, "ucomreadcb: zero length xfer!\n"); 1266 } 1267 #endif 1268 1269 KDASSERT(cp == ub->ub_data); 1270 1271 rnd_add_uint32(&sc->sc_rndsource, cc); 1272 1273 if (sc->sc_opening) { 1274 ucomsubmitread(sc, ub); 1275 return; 1276 } 1277 1278 if (sc->sc_methods->ucom_read != NULL) { 1279 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1280 &cp, &cc); 1281 ub->ub_index = (u_int)(cp - ub->ub_data); 1282 } else 1283 ub->ub_index = 0; 1284 1285 ub->ub_len = cc; 1286 1287 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1288 1289 ucom_read_complete(sc); 1290 } 1291 1292 static void 1293 ucom_cleanup(struct ucom_softc *sc) 1294 { 1295 struct ucom_buffer *ub; 1296 1297 DPRINTF(("ucom_cleanup: closing pipes\n")); 1298 1299 ucom_shutdown(sc); 1300 if (sc->sc_bulkin_pipe != NULL) { 1301 usbd_abort_pipe(sc->sc_bulkin_pipe); 1302 usbd_close_pipe(sc->sc_bulkin_pipe); 1303 sc->sc_bulkin_pipe = NULL; 1304 } 1305 if (sc->sc_bulkout_pipe != NULL) { 1306 usbd_abort_pipe(sc->sc_bulkout_pipe); 1307 usbd_close_pipe(sc->sc_bulkout_pipe); 1308 sc->sc_bulkout_pipe = NULL; 1309 } 1310 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1311 if (ub->ub_xfer != NULL) { 1312 usbd_free_xfer(ub->ub_xfer); 1313 ub->ub_xfer = NULL; 1314 ub->ub_data = NULL; 1315 } 1316 } 1317 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){ 1318 if (ub->ub_xfer != NULL) { 1319 usbd_free_xfer(ub->ub_xfer); 1320 ub->ub_xfer = NULL; 1321 ub->ub_data = NULL; 1322 } 1323 } 1324 } 1325 1326 #endif /* NUCOM > 0 */ 1327 1328 int 1329 ucomprint(void *aux, const char *pnp) 1330 { 1331 struct ucom_attach_args *uca = aux; 1332 1333 if (pnp) 1334 aprint_normal("ucom at %s", pnp); 1335 if (uca->portno != UCOM_UNK_PORTNO) 1336 aprint_normal(" portno %d", uca->portno); 1337 return (UNCONF); 1338 } 1339 1340 int 1341 ucomsubmatch(device_t parent, cfdata_t cf, 1342 const int *ldesc, void *aux) 1343 { 1344 struct ucom_attach_args *uca = aux; 1345 1346 if (uca->portno != UCOM_UNK_PORTNO && 1347 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1348 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1349 return (0); 1350 return (config_match(parent, cf, aux)); 1351 } 1352
Indexes created Fri Oct 17 23:09:53 GMT 2025