1 /* $NetBSD: ucom.c,v 1.96 2012/01/14 20:51:00 jakllsch 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@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 1.96 2012/01/14 20:51:00 jakllsch 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 #if defined(__NetBSD__) 54 #include "rnd.h" 55 #if NRND > 0 56 #include <sys/rnd.h> 57 #endif 58 #endif 59 60 #include <dev/usb/usb.h> 61 62 #include <dev/usb/usbdi.h> 63 #include <dev/usb/usbdi_util.h> 64 #include <dev/usb/usbdevs.h> 65 #include <dev/usb/usb_quirks.h> 66 67 #include <dev/usb/ucomvar.h> 68 69 #include "ucom.h" 70 71 #include "locators.h" 72 73 #if NUCOM > 0 74 75 #ifdef UCOM_DEBUG 76 #define DPRINTFN(n, x) if (ucomdebug > (n)) printf x 77 int ucomdebug = 0; 78 #else 79 #define DPRINTFN(n, x) 80 #endif 81 #define DPRINTF(x) DPRINTFN(0, x) 82 83 #define UCOMUNIT_MASK 0x3ffff 84 #define UCOMDIALOUT_MASK 0x80000 85 #define UCOMCALLUNIT_MASK 0x40000 86 87 #define UCOMUNIT(x) (minor(x) & UCOMUNIT_MASK) 88 #define UCOMDIALOUT(x) (minor(x) & UCOMDIALOUT_MASK) 89 #define UCOMCALLUNIT(x) (minor(x) & UCOMCALLUNIT_MASK) 90 91 /* 92 * XXX: We can submit multiple input/output buffers to the usb stack 93 * to improve throughput, but the usb stack is too lame to deal with this 94 * in a number of places. 95 */ 96 #define UCOM_IN_BUFFS 1 97 #define UCOM_OUT_BUFFS 1 98 99 struct ucom_buffer { 100 SIMPLEQ_ENTRY(ucom_buffer) ub_link; 101 usbd_xfer_handle ub_xfer; 102 u_char *ub_data; 103 u_int ub_len; 104 u_int ub_index; 105 }; 106 107 struct ucom_softc { 108 device_t sc_dev; /* base device */ 109 110 usbd_device_handle sc_udev; /* USB device */ 111 112 usbd_interface_handle sc_iface; /* data interface */ 113 114 int sc_bulkin_no; /* bulk in endpoint address */ 115 usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */ 116 u_int sc_ibufsize; /* read buffer size */ 117 u_int sc_ibufsizepad; /* read buffer size padded */ 118 struct ucom_buffer sc_ibuff[UCOM_IN_BUFFS]; 119 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_empty; 120 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_full; 121 122 int sc_bulkout_no; /* bulk out endpoint address */ 123 usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */ 124 u_int sc_obufsize; /* write buffer size */ 125 u_int sc_opkthdrlen; /* header length of */ 126 struct ucom_buffer sc_obuff[UCOM_OUT_BUFFS]; 127 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_free; 128 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_full; 129 130 void *sc_si; 131 132 const struct ucom_methods *sc_methods; 133 void *sc_parent; 134 int sc_portno; 135 136 struct tty *sc_tty; /* our tty */ 137 u_char sc_lsr; 138 u_char sc_msr; 139 u_char sc_mcr; 140 volatile u_char sc_rx_stopped; 141 u_char sc_rx_unblock; 142 u_char sc_tx_stopped; 143 int sc_swflags; 144 145 u_char sc_opening; /* lock during open */ 146 int sc_refcnt; 147 u_char sc_dying; /* disconnecting */ 148 149 #if defined(__NetBSD__) && NRND > 0 150 krndsource_t sc_rndsource; /* random source */ 151 #endif 152 }; 153 154 dev_type_open(ucomopen); 155 dev_type_close(ucomclose); 156 dev_type_read(ucomread); 157 dev_type_write(ucomwrite); 158 dev_type_ioctl(ucomioctl); 159 dev_type_stop(ucomstop); 160 dev_type_tty(ucomtty); 161 dev_type_poll(ucompoll); 162 163 const struct cdevsw ucom_cdevsw = { 164 ucomopen, ucomclose, ucomread, ucomwrite, ucomioctl, 165 ucomstop, ucomtty, ucompoll, nommap, ttykqfilter, D_TTY 166 }; 167 168 static void ucom_cleanup(struct ucom_softc *); 169 static int ucomparam(struct tty *, struct termios *); 170 static int ucomhwiflow(struct tty *, int); 171 static void ucomstart(struct tty *); 172 static void ucom_shutdown(struct ucom_softc *); 173 static int ucom_do_ioctl(struct ucom_softc *, u_long, void *, 174 int, struct lwp *); 175 static void ucom_dtr(struct ucom_softc *, int); 176 static void ucom_rts(struct ucom_softc *, int); 177 static void ucom_break(struct ucom_softc *, int); 178 static void tiocm_to_ucom(struct ucom_softc *, u_long, int); 179 static int ucom_to_tiocm(struct ucom_softc *); 180 181 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); 182 static void ucom_submit_write(struct ucom_softc *, struct ucom_buffer *); 183 static void ucom_write_status(struct ucom_softc *, struct ucom_buffer *, 184 usbd_status); 185 186 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); 187 static void ucom_read_complete(struct ucom_softc *); 188 static usbd_status ucomsubmitread(struct ucom_softc *, struct ucom_buffer *); 189 static void ucom_softintr(void *); 190 191 int ucom_match(device_t, cfdata_t, void *); 192 void ucom_attach(device_t, device_t, void *); 193 int ucom_detach(device_t, int); 194 int ucom_activate(device_t, enum devact); 195 extern struct cfdriver ucom_cd; 196 CFATTACH_DECL_NEW(ucom, sizeof(struct ucom_softc), ucom_match, ucom_attach, 197 ucom_detach, ucom_activate); 198 199 int 200 ucom_match(device_t parent, cfdata_t match, void *aux) 201 { 202 return (1); 203 } 204 205 void 206 ucom_attach(device_t parent, device_t self, void *aux) 207 { 208 struct ucom_softc *sc = device_private(self); 209 struct ucom_attach_args *uca = aux; 210 struct tty *tp; 211 212 if (uca->info != NULL) 213 aprint_normal(": %s", uca->info); 214 aprint_normal("\n"); 215 216 sc->sc_dev = self; 217 sc->sc_udev = uca->device; 218 sc->sc_iface = uca->iface; 219 sc->sc_bulkout_no = uca->bulkout; 220 sc->sc_bulkin_no = uca->bulkin; 221 sc->sc_ibufsize = uca->ibufsize; 222 sc->sc_ibufsizepad = uca->ibufsizepad; 223 sc->sc_obufsize = uca->obufsize; 224 sc->sc_opkthdrlen = uca->opkthdrlen; 225 sc->sc_methods = uca->methods; 226 sc->sc_parent = uca->arg; 227 sc->sc_portno = uca->portno; 228 229 sc->sc_lsr = 0; 230 sc->sc_msr = 0; 231 sc->sc_mcr = 0; 232 sc->sc_tx_stopped = 0; 233 sc->sc_swflags = 0; 234 sc->sc_opening = 0; 235 sc->sc_refcnt = 0; 236 sc->sc_dying = 0; 237 238 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc); 239 240 tp = tty_alloc(); 241 tp->t_oproc = ucomstart; 242 tp->t_param = ucomparam; 243 tp->t_hwiflow = ucomhwiflow; 244 sc->sc_tty = tp; 245 246 DPRINTF(("ucom_attach: tty_attach %p\n", tp)); 247 tty_attach(tp); 248 249 #if defined(__NetBSD__) && NRND > 0 250 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 251 RND_TYPE_TTY, 0); 252 #endif 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_wait(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 #if defined(__NetBSD__) && NRND > 0 324 rnd_detach_source(&sc->sc_rndsource); 325 #endif 326 327 return (0); 328 } 329 330 int 331 ucom_activate(device_t self, enum devact act) 332 { 333 struct ucom_softc *sc = device_private(self); 334 335 DPRINTFN(5,("ucom_activate: %d\n", act)); 336 337 switch (act) { 338 case DVACT_DEACTIVATE: 339 sc->sc_dying = 1; 340 return 0; 341 default: 342 return EOPNOTSUPP; 343 } 344 } 345 346 void 347 ucom_shutdown(struct ucom_softc *sc) 348 { 349 struct tty *tp = sc->sc_tty; 350 351 DPRINTF(("ucom_shutdown\n")); 352 /* 353 * Hang up if necessary. Wait a bit, so the other side has time to 354 * notice even if we immediately open the port again. 355 */ 356 if (ISSET(tp->t_cflag, HUPCL)) { 357 ucom_dtr(sc, 0); 358 (void)tsleep(sc, TTIPRI, ttclos, hz); 359 } 360 } 361 362 int 363 ucomopen(dev_t dev, int flag, int mode, struct lwp *l) 364 { 365 int unit = UCOMUNIT(dev); 366 usbd_status err; 367 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit); 368 struct ucom_buffer *ub; 369 struct tty *tp; 370 int s, i; 371 int error; 372 373 /* XXX This is a hopefully temporary stopgap for kern/42848. */ 374 if ((flag & (FREAD|FWRITE)) != (FREAD|FWRITE)) 375 return (EINVAL); 376 377 if (sc == NULL) 378 return (ENXIO); 379 380 if (sc->sc_dying) 381 return (EIO); 382 383 if (!device_is_active(sc->sc_dev)) 384 return (ENXIO); 385 386 tp = sc->sc_tty; 387 388 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp)); 389 390 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 391 return (EBUSY); 392 393 s = spltty(); 394 395 /* 396 * Do the following iff this is a first open. 397 */ 398 while (sc->sc_opening) 399 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0); 400 401 if (sc->sc_dying) { 402 splx(s); 403 return (EIO); 404 } 405 sc->sc_opening = 1; 406 407 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 408 struct termios t; 409 410 tp->t_dev = dev; 411 412 if (sc->sc_methods->ucom_open != NULL) { 413 error = sc->sc_methods->ucom_open(sc->sc_parent, 414 sc->sc_portno); 415 if (error) { 416 ucom_cleanup(sc); 417 sc->sc_opening = 0; 418 wakeup(&sc->sc_opening); 419 splx(s); 420 return (error); 421 } 422 } 423 424 ucom_status_change(sc); 425 426 /* 427 * Initialize the termios status to the defaults. Add in the 428 * sticky bits from TIOCSFLAGS. 429 */ 430 t.c_ispeed = 0; 431 t.c_ospeed = TTYDEF_SPEED; 432 t.c_cflag = TTYDEF_CFLAG; 433 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 434 SET(t.c_cflag, CLOCAL); 435 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 436 SET(t.c_cflag, CRTSCTS); 437 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 438 SET(t.c_cflag, MDMBUF); 439 /* Make sure ucomparam() will do something. */ 440 tp->t_ospeed = 0; 441 (void) ucomparam(tp, &t); 442 tp->t_iflag = TTYDEF_IFLAG; 443 tp->t_oflag = TTYDEF_OFLAG; 444 tp->t_lflag = TTYDEF_LFLAG; 445 ttychars(tp); 446 ttsetwater(tp); 447 448 /* 449 * Turn on DTR. We must always do this, even if carrier is not 450 * present, because otherwise we'd have to use TIOCSDTR 451 * immediately after setting CLOCAL, which applications do not 452 * expect. We always assert DTR while the device is open 453 * unless explicitly requested to deassert it. Ditto RTS. 454 */ 455 ucom_dtr(sc, 1); 456 ucom_rts(sc, 1); 457 458 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 459 sc->sc_bulkin_no, sc->sc_bulkout_no)); 460 461 /* Open the bulk pipes */ 462 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 463 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 464 if (err) { 465 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 466 device_xname(sc->sc_dev), sc->sc_bulkin_no, 467 usbd_errstr(err))); 468 error = EIO; 469 goto fail_0; 470 } 471 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 472 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 473 if (err) { 474 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 475 device_xname(sc->sc_dev), sc->sc_bulkout_no, 476 usbd_errstr(err))); 477 error = EIO; 478 goto fail_1; 479 } 480 481 sc->sc_rx_unblock = 0; 482 sc->sc_rx_stopped = 0; 483 sc->sc_tx_stopped = 0; 484 485 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 486 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 487 488 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 489 SIMPLEQ_INIT(&sc->sc_ibuff_full); 490 SIMPLEQ_INIT(&sc->sc_obuff_free); 491 SIMPLEQ_INIT(&sc->sc_obuff_full); 492 493 /* Allocate input buffers */ 494 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 495 ub++) { 496 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 497 if (ub->ub_xfer == NULL) { 498 error = ENOMEM; 499 goto fail_2; 500 } 501 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 502 sc->sc_ibufsizepad); 503 if (ub->ub_data == NULL) { 504 error = ENOMEM; 505 goto fail_2; 506 } 507 508 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 509 error = EIO; 510 goto fail_2; 511 } 512 } 513 514 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 515 ub++) { 516 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 517 if (ub->ub_xfer == NULL) { 518 error = ENOMEM; 519 goto fail_2; 520 } 521 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 522 sc->sc_obufsize); 523 if (ub->ub_data == NULL) { 524 error = ENOMEM; 525 goto fail_2; 526 } 527 528 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 529 } 530 531 } 532 sc->sc_opening = 0; 533 wakeup(&sc->sc_opening); 534 splx(s); 535 536 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 537 if (error) 538 goto bad; 539 540 error = (*tp->t_linesw->l_open)(dev, tp); 541 if (error) 542 goto bad; 543 544 return (0); 545 546 fail_2: 547 usbd_abort_pipe(sc->sc_bulkin_pipe); 548 for (i = 0; i < UCOM_IN_BUFFS; i++) { 549 if (sc->sc_ibuff[i].ub_xfer != NULL) { 550 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 551 sc->sc_ibuff[i].ub_xfer = NULL; 552 sc->sc_ibuff[i].ub_data = NULL; 553 } 554 } 555 usbd_abort_pipe(sc->sc_bulkout_pipe); 556 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 557 if (sc->sc_obuff[i].ub_xfer != NULL) { 558 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 559 sc->sc_obuff[i].ub_xfer = NULL; 560 sc->sc_obuff[i].ub_data = NULL; 561 } 562 } 563 564 usbd_close_pipe(sc->sc_bulkout_pipe); 565 sc->sc_bulkout_pipe = NULL; 566 fail_1: 567 usbd_close_pipe(sc->sc_bulkin_pipe); 568 sc->sc_bulkin_pipe = NULL; 569 fail_0: 570 sc->sc_opening = 0; 571 wakeup(&sc->sc_opening); 572 splx(s); 573 return (error); 574 575 bad: 576 s = spltty(); 577 CLR(tp->t_state, TS_BUSY); 578 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 579 /* 580 * We failed to open the device, and nobody else had it opened. 581 * Clean up the state as appropriate. 582 */ 583 ucom_cleanup(sc); 584 } 585 splx(s); 586 587 return (error); 588 } 589 590 int 591 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 592 { 593 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 594 struct tty *tp = sc->sc_tty; 595 int s; 596 597 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 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_wakeup(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 = sc->sc_tty; 631 int error; 632 633 if (sc->sc_dying) 634 return (EIO); 635 636 sc->sc_refcnt++; 637 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 638 if (--sc->sc_refcnt < 0) 639 usb_detach_wakeup(sc->sc_dev); 640 return (error); 641 } 642 643 int 644 ucomwrite(dev_t dev, struct uio *uio, int flag) 645 { 646 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 647 struct tty *tp = sc->sc_tty; 648 int error; 649 650 if (sc->sc_dying) 651 return (EIO); 652 653 sc->sc_refcnt++; 654 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 655 if (--sc->sc_refcnt < 0) 656 usb_detach_wakeup(sc->sc_dev); 657 return (error); 658 } 659 660 int 661 ucompoll(dev_t dev, int events, struct lwp *l) 662 { 663 struct ucom_softc *sc; 664 struct tty *tp; 665 int revents; 666 667 sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 668 if (sc == NULL || sc->sc_dying) 669 return (POLLHUP); 670 671 tp = sc->sc_tty; 672 673 sc->sc_refcnt++; 674 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 675 if (--sc->sc_refcnt < 0) 676 usb_detach_wakeup(sc->sc_dev); 677 return (revents); 678 } 679 680 struct tty * 681 ucomtty(dev_t dev) 682 { 683 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 684 struct tty *tp = sc->sc_tty; 685 686 return (tp); 687 } 688 689 int 690 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 691 { 692 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 693 int error; 694 695 sc->sc_refcnt++; 696 error = ucom_do_ioctl(sc, cmd, data, flag, l); 697 if (--sc->sc_refcnt < 0) 698 usb_detach_wakeup(sc->sc_dev); 699 return (error); 700 } 701 702 static int 703 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 704 int flag, struct lwp *l) 705 { 706 struct tty *tp = sc->sc_tty; 707 int error; 708 int s; 709 710 if (sc->sc_dying) 711 return (EIO); 712 713 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 714 715 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 716 if (error != EPASSTHROUGH) 717 return (error); 718 719 error = ttioctl(tp, cmd, data, flag, l); 720 if (error != EPASSTHROUGH) 721 return (error); 722 723 if (sc->sc_methods->ucom_ioctl != NULL) { 724 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 725 sc->sc_portno, cmd, data, flag, l->l_proc); 726 if (error != EPASSTHROUGH) 727 return (error); 728 } 729 730 error = 0; 731 732 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 733 s = spltty(); 734 735 switch (cmd) { 736 case TIOCSBRK: 737 ucom_break(sc, 1); 738 break; 739 740 case TIOCCBRK: 741 ucom_break(sc, 0); 742 break; 743 744 case TIOCSDTR: 745 ucom_dtr(sc, 1); 746 break; 747 748 case TIOCCDTR: 749 ucom_dtr(sc, 0); 750 break; 751 752 case TIOCGFLAGS: 753 *(int *)data = sc->sc_swflags; 754 break; 755 756 case TIOCSFLAGS: 757 error = kauth_authorize_device_tty(l->l_cred, 758 KAUTH_DEVICE_TTY_PRIVSET, tp); 759 if (error) 760 break; 761 sc->sc_swflags = *(int *)data; 762 break; 763 764 case TIOCMSET: 765 case TIOCMBIS: 766 case TIOCMBIC: 767 tiocm_to_ucom(sc, cmd, *(int *)data); 768 break; 769 770 case TIOCMGET: 771 *(int *)data = ucom_to_tiocm(sc); 772 break; 773 774 default: 775 error = EPASSTHROUGH; 776 break; 777 } 778 779 splx(s); 780 781 return (error); 782 } 783 784 static void 785 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 786 { 787 u_char combits; 788 789 combits = 0; 790 if (ISSET(ttybits, TIOCM_DTR)) 791 SET(combits, UMCR_DTR); 792 if (ISSET(ttybits, TIOCM_RTS)) 793 SET(combits, UMCR_RTS); 794 795 switch (how) { 796 case TIOCMBIC: 797 CLR(sc->sc_mcr, combits); 798 break; 799 800 case TIOCMBIS: 801 SET(sc->sc_mcr, combits); 802 break; 803 804 case TIOCMSET: 805 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 806 SET(sc->sc_mcr, combits); 807 break; 808 } 809 810 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 811 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 812 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 813 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 814 } 815 816 static int 817 ucom_to_tiocm(struct ucom_softc *sc) 818 { 819 u_char combits; 820 int ttybits = 0; 821 822 combits = sc->sc_mcr; 823 if (ISSET(combits, UMCR_DTR)) 824 SET(ttybits, TIOCM_DTR); 825 if (ISSET(combits, UMCR_RTS)) 826 SET(ttybits, TIOCM_RTS); 827 828 combits = sc->sc_msr; 829 if (ISSET(combits, UMSR_DCD)) 830 SET(ttybits, TIOCM_CD); 831 if (ISSET(combits, UMSR_CTS)) 832 SET(ttybits, TIOCM_CTS); 833 if (ISSET(combits, UMSR_DSR)) 834 SET(ttybits, TIOCM_DSR); 835 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 836 SET(ttybits, TIOCM_RI); 837 838 #if 0 839 XXX; 840 if (sc->sc_ier != 0) 841 SET(ttybits, TIOCM_LE); 842 #endif 843 844 return (ttybits); 845 } 846 847 static void 848 ucom_break(struct ucom_softc *sc, int onoff) 849 { 850 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 851 852 if (sc->sc_methods->ucom_set != NULL) 853 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 854 UCOM_SET_BREAK, onoff); 855 } 856 857 static void 858 ucom_dtr(struct ucom_softc *sc, int onoff) 859 { 860 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 861 862 if (sc->sc_methods->ucom_set != NULL) 863 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 864 UCOM_SET_DTR, onoff); 865 } 866 867 static void 868 ucom_rts(struct ucom_softc *sc, int onoff) 869 { 870 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 871 872 if (sc->sc_methods->ucom_set != NULL) 873 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 874 UCOM_SET_RTS, onoff); 875 } 876 877 void 878 ucom_status_change(struct ucom_softc *sc) 879 { 880 struct tty *tp = sc->sc_tty; 881 u_char old_msr; 882 883 if (sc->sc_methods->ucom_get_status != NULL) { 884 old_msr = sc->sc_msr; 885 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 886 &sc->sc_lsr, &sc->sc_msr); 887 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) 888 (*tp->t_linesw->l_modem)(tp, 889 ISSET(sc->sc_msr, UMSR_DCD)); 890 } else { 891 sc->sc_lsr = 0; 892 /* Assume DCD is present, if we have no chance to check it. */ 893 sc->sc_msr = UMSR_DCD; 894 } 895 } 896 897 static int 898 ucomparam(struct tty *tp, struct termios *t) 899 { 900 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 901 UCOMUNIT(tp->t_dev)); 902 int error; 903 904 if (sc->sc_dying) 905 return (EIO); 906 907 /* Check requested parameters. */ 908 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 909 return (EINVAL); 910 911 /* 912 * For the console, always force CLOCAL and !HUPCL, so that the port 913 * is always active. 914 */ 915 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 916 SET(t->c_cflag, CLOCAL); 917 CLR(t->c_cflag, HUPCL); 918 } 919 920 /* 921 * If there were no changes, don't do anything. This avoids dropping 922 * input and improves performance when all we did was frob things like 923 * VMIN and VTIME. 924 */ 925 if (tp->t_ospeed == t->c_ospeed && 926 tp->t_cflag == t->c_cflag) 927 return (0); 928 929 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 930 931 /* And copy to tty. */ 932 tp->t_ispeed = 0; 933 tp->t_ospeed = t->c_ospeed; 934 tp->t_cflag = t->c_cflag; 935 936 if (sc->sc_methods->ucom_param != NULL) { 937 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 938 t); 939 if (error) 940 return (error); 941 } 942 943 /* XXX worry about CHWFLOW */ 944 945 /* 946 * Update the tty layer's idea of the carrier bit, in case we changed 947 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 948 * explicit request. 949 */ 950 DPRINTF(("ucomparam: l_modem\n")); 951 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 952 953 #if 0 954 XXX what if the hardware is not open 955 if (!ISSET(t->c_cflag, CHWFLOW)) { 956 if (sc->sc_tx_stopped) { 957 sc->sc_tx_stopped = 0; 958 ucomstart(tp); 959 } 960 } 961 #endif 962 963 return (0); 964 } 965 966 static int 967 ucomhwiflow(struct tty *tp, int block) 968 { 969 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 970 UCOMUNIT(tp->t_dev)); 971 int old; 972 973 old = sc->sc_rx_stopped; 974 sc->sc_rx_stopped = (u_char)block; 975 976 if (old && !block) { 977 int s = splusb(); 978 sc->sc_rx_unblock = 1; 979 softint_schedule(sc->sc_si); 980 splx(s); 981 } 982 983 return (1); 984 } 985 986 static void 987 ucomstart(struct tty *tp) 988 { 989 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 990 UCOMUNIT(tp->t_dev)); 991 struct ucom_buffer *ub; 992 int s; 993 u_char *data; 994 int cnt; 995 996 if (sc->sc_dying) 997 return; 998 999 s = spltty(); 1000 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1001 goto out; 1002 if (sc->sc_tx_stopped) 1003 goto out; 1004 1005 if (!ttypull(tp)) 1006 goto out; 1007 1008 /* Grab the first contiguous region of buffer space. */ 1009 data = tp->t_outq.c_cf; 1010 cnt = ndqb(&tp->t_outq, 0); 1011 1012 if (cnt == 0) 1013 goto out; 1014 1015 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1016 KASSERT(ub != NULL); 1017 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1018 1019 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1020 SET(tp->t_state, TS_BUSY); 1021 1022 if (cnt > sc->sc_obufsize) 1023 cnt = sc->sc_obufsize; 1024 1025 if (sc->sc_methods->ucom_write != NULL) 1026 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1027 ub->ub_data, data, &cnt); 1028 else 1029 memcpy(ub->ub_data, data, cnt); 1030 1031 ub->ub_len = cnt; 1032 ub->ub_index = 0; 1033 1034 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1035 1036 softint_schedule(sc->sc_si); 1037 1038 out: 1039 splx(s); 1040 } 1041 1042 void 1043 ucomstop(struct tty *tp, int flag) 1044 { 1045 #if 0 1046 /*struct ucom_softc *sc = 1047 device_lookup_private(&ucom_cd, UCOMUNIT(tp->t_dev));*/ 1048 int s; 1049 1050 s = spltty(); 1051 if (ISSET(tp->t_state, TS_BUSY)) { 1052 /* sc->sc_tx_stopped = 1; */ 1053 if (!ISSET(tp->t_state, TS_TTSTOP)) 1054 SET(tp->t_state, TS_FLUSH); 1055 } 1056 splx(s); 1057 #endif 1058 } 1059 1060 static void 1061 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1062 usbd_status err) 1063 { 1064 struct tty *tp = sc->sc_tty; 1065 uint32_t cc = ub->ub_len; 1066 1067 switch (err) { 1068 case USBD_IN_PROGRESS: 1069 ub->ub_index = ub->ub_len; 1070 break; 1071 case USBD_STALLED: 1072 ub->ub_index = 0; 1073 softint_schedule(sc->sc_si); 1074 break; 1075 case USBD_NORMAL_COMPLETION: 1076 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1077 #if defined(__NetBSD__) && NRND > 0 1078 rnd_add_uint32(&sc->sc_rndsource, cc); 1079 #endif 1080 /*FALLTHROUGH*/ 1081 default: 1082 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1083 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1084 cc -= sc->sc_opkthdrlen; 1085 1086 CLR(tp->t_state, TS_BUSY); 1087 if (ISSET(tp->t_state, TS_FLUSH)) 1088 CLR(tp->t_state, TS_FLUSH); 1089 else 1090 ndflush(&tp->t_outq, cc); 1091 1092 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1093 !sc->sc_dying) { 1094 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1095 ucom_submit_write(sc, ub); 1096 1097 (*tp->t_linesw->l_start)(tp); 1098 } 1099 break; 1100 } 1101 } 1102 1103 /* Call at spltty() */ 1104 static void 1105 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1106 { 1107 1108 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1109 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1110 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1111 1112 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1113 } 1114 1115 static void 1116 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1117 { 1118 struct ucom_softc *sc = (struct ucom_softc *)p; 1119 int s; 1120 1121 s = spltty(); 1122 1123 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1124 1125 splx(s); 1126 } 1127 1128 static void 1129 ucom_softintr(void *arg) 1130 { 1131 struct ucom_softc *sc = arg; 1132 struct tty *tp = sc->sc_tty; 1133 struct ucom_buffer *ub; 1134 int s; 1135 1136 if (!ISSET(tp->t_state, TS_ISOPEN)) 1137 return; 1138 1139 s = spltty(); 1140 1141 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1142 1143 if (ub != NULL && ub->ub_index == 0) 1144 ucom_submit_write(sc, ub); 1145 1146 if (sc->sc_rx_unblock) 1147 ucom_read_complete(sc); 1148 1149 splx(s); 1150 } 1151 1152 static void 1153 ucom_read_complete(struct ucom_softc *sc) 1154 { 1155 int (*rint)(int, struct tty *); 1156 struct ucom_buffer *ub; 1157 struct tty *tp; 1158 int s; 1159 1160 tp = sc->sc_tty; 1161 rint = tp->t_linesw->l_rint; 1162 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1163 1164 while (ub != NULL && !sc->sc_rx_stopped) { 1165 1166 s = spltty(); 1167 1168 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1169 /* Give characters to tty layer. */ 1170 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1171 /* Overflow: drop remainder */ 1172 ub->ub_index = ub->ub_len; 1173 } else 1174 ub->ub_index++; 1175 } 1176 1177 splx(s); 1178 1179 if (ub->ub_index == ub->ub_len) { 1180 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1181 1182 ucomsubmitread(sc, ub); 1183 1184 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1185 } 1186 } 1187 1188 sc->sc_rx_unblock = (ub != NULL); 1189 } 1190 1191 static usbd_status 1192 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1193 { 1194 usbd_status err; 1195 1196 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1197 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1198 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1199 1200 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1201 /* XXX: Recover from this, please! */ 1202 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1203 return (err); 1204 } 1205 1206 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1207 1208 return (USBD_NORMAL_COMPLETION); 1209 } 1210 1211 static void 1212 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1213 { 1214 struct ucom_softc *sc = (struct ucom_softc *)p; 1215 struct tty *tp = sc->sc_tty; 1216 struct ucom_buffer *ub; 1217 u_int32_t cc; 1218 u_char *cp; 1219 int s; 1220 1221 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1222 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1223 1224 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1225 sc->sc_dying) { 1226 DPRINTF(("ucomreadcb: dying\n")); 1227 ub->ub_index = ub->ub_len = 0; 1228 /* Send something to wake upper layer */ 1229 s = spltty(); 1230 if (status != USBD_CANCELLED) { 1231 (tp->t_linesw->l_rint)('\n', tp); 1232 mutex_spin_enter(&tty_lock); /* XXX */ 1233 ttwakeup(tp); 1234 mutex_spin_exit(&tty_lock); /* XXX */ 1235 } 1236 splx(s); 1237 return; 1238 } 1239 1240 if (status == USBD_STALLED) { 1241 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1242 ucomsubmitread(sc, ub); 1243 return; 1244 } 1245 1246 if (status != USBD_NORMAL_COMPLETION) { 1247 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1248 return; 1249 } 1250 1251 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1252 1253 #ifdef UCOM_DEBUG 1254 /* This is triggered by uslsa(4) occasionally. */ 1255 if ((ucomdebug > 0) && (cc == 0)) { 1256 device_printf(sc->sc_dev, "ucomreadcb: zero length xfer!\n"); 1257 } 1258 #endif 1259 1260 KDASSERT(cp == ub->ub_data); 1261 1262 #if defined(__NetBSD__) && NRND > 0 1263 rnd_add_uint32(&sc->sc_rndsource, cc); 1264 #endif 1265 1266 if (sc->sc_opening) { 1267 ucomsubmitread(sc, ub); 1268 return; 1269 } 1270 1271 if (sc->sc_methods->ucom_read != NULL) { 1272 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1273 &cp, &cc); 1274 ub->ub_index = (u_int)(cp - ub->ub_data); 1275 } else 1276 ub->ub_index = 0; 1277 1278 ub->ub_len = cc; 1279 1280 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1281 1282 ucom_read_complete(sc); 1283 } 1284 1285 static void 1286 ucom_cleanup(struct ucom_softc *sc) 1287 { 1288 struct ucom_buffer *ub; 1289 1290 DPRINTF(("ucom_cleanup: closing pipes\n")); 1291 1292 ucom_shutdown(sc); 1293 if (sc->sc_bulkin_pipe != NULL) { 1294 usbd_abort_pipe(sc->sc_bulkin_pipe); 1295 usbd_close_pipe(sc->sc_bulkin_pipe); 1296 sc->sc_bulkin_pipe = NULL; 1297 } 1298 if (sc->sc_bulkout_pipe != NULL) { 1299 usbd_abort_pipe(sc->sc_bulkout_pipe); 1300 usbd_close_pipe(sc->sc_bulkout_pipe); 1301 sc->sc_bulkout_pipe = NULL; 1302 } 1303 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1304 if (ub->ub_xfer != NULL) { 1305 usbd_free_xfer(ub->ub_xfer); 1306 ub->ub_xfer = NULL; 1307 ub->ub_data = NULL; 1308 } 1309 } 1310 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_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 } 1318 1319 #endif /* NUCOM > 0 */ 1320 1321 int 1322 ucomprint(void *aux, const char *pnp) 1323 { 1324 struct ucom_attach_args *uca = aux; 1325 1326 if (pnp) 1327 aprint_normal("ucom at %s", pnp); 1328 if (uca->portno != UCOM_UNK_PORTNO) 1329 aprint_normal(" portno %d", uca->portno); 1330 return (UNCONF); 1331 } 1332 1333 int 1334 ucomsubmatch(device_t parent, cfdata_t cf, 1335 const int *ldesc, void *aux) 1336 { 1337 struct ucom_attach_args *uca = aux; 1338 1339 if (uca->portno != UCOM_UNK_PORTNO && 1340 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1341 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1342 return (0); 1343 return (config_match(parent, cf, aux)); 1344 } 1345