ucom.c revision 1.102
1 /* $NetBSD: ucom.c,v 1.102 2012/12/15 04:10:05 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 (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 1.102 2012/12/15 04:10:05 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 #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 ucomopen, ucomclose, ucomread, ucomwrite, ucomioctl, 158 ucomstop, ucomtty, ucompoll, nommap, ttykqfilter, D_TTY 159 }; 160 161 static void ucom_cleanup(struct ucom_softc *); 162 static int ucomparam(struct tty *, struct termios *); 163 static int ucomhwiflow(struct tty *, int); 164 static void ucomstart(struct tty *); 165 static void ucom_shutdown(struct ucom_softc *); 166 static int ucom_do_ioctl(struct ucom_softc *, u_long, void *, 167 int, struct lwp *); 168 static void ucom_dtr(struct ucom_softc *, int); 169 static void ucom_rts(struct ucom_softc *, int); 170 static void ucom_break(struct ucom_softc *, int); 171 static void tiocm_to_ucom(struct ucom_softc *, u_long, int); 172 static int ucom_to_tiocm(struct ucom_softc *); 173 174 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); 175 static void ucom_submit_write(struct ucom_softc *, struct ucom_buffer *); 176 static void ucom_write_status(struct ucom_softc *, struct ucom_buffer *, 177 usbd_status); 178 179 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); 180 static void ucom_read_complete(struct ucom_softc *); 181 static usbd_status ucomsubmitread(struct ucom_softc *, struct ucom_buffer *); 182 static void ucom_softintr(void *); 183 184 int ucom_match(device_t, cfdata_t, void *); 185 void ucom_attach(device_t, device_t, void *); 186 int ucom_detach(device_t, int); 187 int ucom_activate(device_t, enum devact); 188 extern struct cfdriver ucom_cd; 189 CFATTACH_DECL_NEW(ucom, sizeof(struct ucom_softc), ucom_match, ucom_attach, 190 ucom_detach, ucom_activate); 191 192 int 193 ucom_match(device_t parent, cfdata_t match, void *aux) 194 { 195 return (1); 196 } 197 198 void 199 ucom_attach(device_t parent, device_t self, void *aux) 200 { 201 struct ucom_softc *sc = device_private(self); 202 struct ucom_attach_args *uca = aux; 203 struct tty *tp; 204 205 if (uca->info != NULL) 206 aprint_normal(": %s", uca->info); 207 aprint_normal("\n"); 208 209 sc->sc_dev = self; 210 sc->sc_udev = uca->device; 211 sc->sc_iface = uca->iface; 212 sc->sc_bulkout_no = uca->bulkout; 213 sc->sc_bulkin_no = uca->bulkin; 214 sc->sc_ibufsize = uca->ibufsize; 215 sc->sc_ibufsizepad = uca->ibufsizepad; 216 sc->sc_obufsize = uca->obufsize; 217 sc->sc_opkthdrlen = uca->opkthdrlen; 218 sc->sc_methods = uca->methods; 219 sc->sc_parent = uca->arg; 220 sc->sc_portno = uca->portno; 221 222 sc->sc_lsr = 0; 223 sc->sc_msr = 0; 224 sc->sc_mcr = 0; 225 sc->sc_tx_stopped = 0; 226 sc->sc_swflags = 0; 227 sc->sc_opening = 0; 228 sc->sc_refcnt = 0; 229 sc->sc_dying = 0; 230 231 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc); 232 233 tp = tty_alloc(); 234 tp->t_oproc = ucomstart; 235 tp->t_param = ucomparam; 236 tp->t_hwiflow = ucomhwiflow; 237 sc->sc_tty = tp; 238 239 DPRINTF(("ucom_attach: tty_attach %p\n", tp)); 240 tty_attach(tp); 241 242 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 243 RND_TYPE_TTY, 0); 244 245 if (!pmf_device_register(self, NULL, NULL)) 246 aprint_error_dev(self, "couldn't establish power handler\n"); 247 return; 248 } 249 250 int 251 ucom_detach(device_t self, int flags) 252 { 253 struct ucom_softc *sc = device_private(self); 254 struct tty *tp = sc->sc_tty; 255 int maj, mn; 256 int s, i; 257 258 DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n", 259 sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no)); 260 261 sc->sc_dying = 1; 262 pmf_device_deregister(self); 263 264 if (sc->sc_bulkin_pipe != NULL) 265 usbd_abort_pipe(sc->sc_bulkin_pipe); 266 if (sc->sc_bulkout_pipe != NULL) 267 usbd_abort_pipe(sc->sc_bulkout_pipe); 268 269 s = splusb(); 270 if (--sc->sc_refcnt >= 0) { 271 /* Wake up anyone waiting */ 272 if (tp != NULL) { 273 mutex_spin_enter(&tty_lock); 274 CLR(tp->t_state, TS_CARR_ON); 275 CLR(tp->t_cflag, CLOCAL | MDMBUF); 276 ttyflush(tp, FREAD|FWRITE); 277 mutex_spin_exit(&tty_lock); 278 } 279 /* Wait for processes to go away. */ 280 usb_detach_waitold(sc->sc_dev); 281 } 282 283 softint_disestablish(sc->sc_si); 284 splx(s); 285 286 /* locate the major number */ 287 maj = cdevsw_lookup_major(&ucom_cdevsw); 288 289 /* Nuke the vnodes for any open instances. */ 290 mn = device_unit(self); 291 DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn)); 292 vdevgone(maj, mn, mn, VCHR); 293 vdevgone(maj, mn | UCOMDIALOUT_MASK, mn | UCOMDIALOUT_MASK, VCHR); 294 vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR); 295 296 /* Detach and free the tty. */ 297 if (tp != NULL) { 298 tty_detach(tp); 299 tty_free(tp); 300 sc->sc_tty = NULL; 301 } 302 303 for (i = 0; i < UCOM_IN_BUFFS; i++) { 304 if (sc->sc_ibuff[i].ub_xfer != NULL) 305 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 306 } 307 308 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 309 if (sc->sc_obuff[i].ub_xfer != NULL) 310 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 311 } 312 313 /* Detach the random source */ 314 rnd_detach_source(&sc->sc_rndsource); 315 316 return (0); 317 } 318 319 int 320 ucom_activate(device_t self, enum devact act) 321 { 322 struct ucom_softc *sc = device_private(self); 323 324 DPRINTFN(5,("ucom_activate: %d\n", act)); 325 326 switch (act) { 327 case DVACT_DEACTIVATE: 328 sc->sc_dying = 1; 329 return 0; 330 default: 331 return EOPNOTSUPP; 332 } 333 } 334 335 void 336 ucom_shutdown(struct ucom_softc *sc) 337 { 338 struct tty *tp = sc->sc_tty; 339 340 DPRINTF(("ucom_shutdown\n")); 341 /* 342 * Hang up if necessary. Wait a bit, so the other side has time to 343 * notice even if we immediately open the port again. 344 */ 345 if (ISSET(tp->t_cflag, HUPCL)) { 346 ucom_dtr(sc, 0); 347 (void)tsleep(sc, TTIPRI, ttclos, hz); 348 } 349 } 350 351 int 352 ucomopen(dev_t dev, int flag, int mode, struct lwp *l) 353 { 354 int unit = UCOMUNIT(dev); 355 usbd_status err; 356 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit); 357 struct ucom_buffer *ub; 358 struct tty *tp; 359 int s, i; 360 int error; 361 362 /* XXX This is a hopefully temporary stopgap for kern/42848. */ 363 if ((flag & (FREAD|FWRITE)) != (FREAD|FWRITE)) 364 return (EINVAL); 365 366 if (sc == NULL) 367 return (ENXIO); 368 369 if (sc->sc_dying) 370 return (EIO); 371 372 if (!device_is_active(sc->sc_dev)) 373 return (ENXIO); 374 375 tp = sc->sc_tty; 376 377 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp)); 378 379 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 380 return (EBUSY); 381 382 s = spltty(); 383 384 /* 385 * Do the following iff this is a first open. 386 */ 387 while (sc->sc_opening) 388 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0); 389 390 if (sc->sc_dying) { 391 splx(s); 392 return (EIO); 393 } 394 sc->sc_opening = 1; 395 396 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 397 struct termios t; 398 399 tp->t_dev = dev; 400 401 if (sc->sc_methods->ucom_open != NULL) { 402 error = sc->sc_methods->ucom_open(sc->sc_parent, 403 sc->sc_portno); 404 if (error) { 405 ucom_cleanup(sc); 406 sc->sc_opening = 0; 407 wakeup(&sc->sc_opening); 408 splx(s); 409 return (error); 410 } 411 } 412 413 ucom_status_change(sc); 414 415 /* 416 * Initialize the termios status to the defaults. Add in the 417 * sticky bits from TIOCSFLAGS. 418 */ 419 t.c_ispeed = 0; 420 t.c_ospeed = TTYDEF_SPEED; 421 t.c_cflag = TTYDEF_CFLAG; 422 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 423 SET(t.c_cflag, CLOCAL); 424 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 425 SET(t.c_cflag, CRTSCTS); 426 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 427 SET(t.c_cflag, MDMBUF); 428 /* Make sure ucomparam() will do something. */ 429 tp->t_ospeed = 0; 430 (void) ucomparam(tp, &t); 431 tp->t_iflag = TTYDEF_IFLAG; 432 tp->t_oflag = TTYDEF_OFLAG; 433 tp->t_lflag = TTYDEF_LFLAG; 434 ttychars(tp); 435 ttsetwater(tp); 436 437 /* 438 * Turn on DTR. We must always do this, even if carrier is not 439 * present, because otherwise we'd have to use TIOCSDTR 440 * immediately after setting CLOCAL, which applications do not 441 * expect. We always assert DTR while the device is open 442 * unless explicitly requested to deassert it. Ditto RTS. 443 */ 444 ucom_dtr(sc, 1); 445 ucom_rts(sc, 1); 446 447 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 448 sc->sc_bulkin_no, sc->sc_bulkout_no)); 449 450 /* Open the bulk pipes */ 451 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 452 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 453 if (err) { 454 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 455 device_xname(sc->sc_dev), sc->sc_bulkin_no, 456 usbd_errstr(err))); 457 error = EIO; 458 goto fail_0; 459 } 460 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 461 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 462 if (err) { 463 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 464 device_xname(sc->sc_dev), sc->sc_bulkout_no, 465 usbd_errstr(err))); 466 error = EIO; 467 goto fail_1; 468 } 469 470 sc->sc_rx_unblock = 0; 471 sc->sc_rx_stopped = 0; 472 sc->sc_tx_stopped = 0; 473 474 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 475 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 476 477 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 478 SIMPLEQ_INIT(&sc->sc_ibuff_full); 479 SIMPLEQ_INIT(&sc->sc_obuff_free); 480 SIMPLEQ_INIT(&sc->sc_obuff_full); 481 482 /* Allocate input buffers */ 483 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 484 ub++) { 485 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 486 if (ub->ub_xfer == NULL) { 487 error = ENOMEM; 488 goto fail_2; 489 } 490 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 491 sc->sc_ibufsizepad); 492 if (ub->ub_data == NULL) { 493 error = ENOMEM; 494 goto fail_2; 495 } 496 497 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 498 error = EIO; 499 goto fail_2; 500 } 501 } 502 503 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 504 ub++) { 505 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 506 if (ub->ub_xfer == NULL) { 507 error = ENOMEM; 508 goto fail_2; 509 } 510 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 511 sc->sc_obufsize); 512 if (ub->ub_data == NULL) { 513 error = ENOMEM; 514 goto fail_2; 515 } 516 517 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 518 } 519 520 } 521 sc->sc_opening = 0; 522 wakeup(&sc->sc_opening); 523 splx(s); 524 525 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 526 if (error) 527 goto bad; 528 529 error = (*tp->t_linesw->l_open)(dev, tp); 530 if (error) 531 goto bad; 532 533 return (0); 534 535 fail_2: 536 usbd_abort_pipe(sc->sc_bulkin_pipe); 537 for (i = 0; i < UCOM_IN_BUFFS; i++) { 538 if (sc->sc_ibuff[i].ub_xfer != NULL) { 539 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 540 sc->sc_ibuff[i].ub_xfer = NULL; 541 sc->sc_ibuff[i].ub_data = NULL; 542 } 543 } 544 usbd_abort_pipe(sc->sc_bulkout_pipe); 545 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 546 if (sc->sc_obuff[i].ub_xfer != NULL) { 547 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 548 sc->sc_obuff[i].ub_xfer = NULL; 549 sc->sc_obuff[i].ub_data = NULL; 550 } 551 } 552 553 usbd_close_pipe(sc->sc_bulkout_pipe); 554 sc->sc_bulkout_pipe = NULL; 555 fail_1: 556 usbd_close_pipe(sc->sc_bulkin_pipe); 557 sc->sc_bulkin_pipe = NULL; 558 fail_0: 559 sc->sc_opening = 0; 560 wakeup(&sc->sc_opening); 561 splx(s); 562 return (error); 563 564 bad: 565 s = spltty(); 566 CLR(tp->t_state, TS_BUSY); 567 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 568 /* 569 * We failed to open the device, and nobody else had it opened. 570 * Clean up the state as appropriate. 571 */ 572 ucom_cleanup(sc); 573 } 574 splx(s); 575 576 return (error); 577 } 578 579 int 580 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 581 { 582 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 583 struct tty *tp; 584 int s; 585 586 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 587 588 if (sc == NULL) 589 return 0; 590 591 tp = sc->sc_tty; 592 593 if (!ISSET(tp->t_state, TS_ISOPEN)) 594 return (0); 595 596 s = spltty(); 597 sc->sc_refcnt++; 598 599 (*tp->t_linesw->l_close)(tp, flag); 600 ttyclose(tp); 601 602 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 603 /* 604 * Although we got a last close, the device may still be in 605 * use; e.g. if this was the dialout node, and there are still 606 * processes waiting for carrier on the non-dialout node. 607 */ 608 ucom_cleanup(sc); 609 } 610 611 if (sc->sc_methods->ucom_close != NULL) 612 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno); 613 614 if (--sc->sc_refcnt < 0) 615 usb_detach_wakeupold(sc->sc_dev); 616 splx(s); 617 618 return (0); 619 } 620 621 int 622 ucomread(dev_t dev, struct uio *uio, int flag) 623 { 624 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 625 struct tty *tp; 626 int error; 627 628 if (sc == NULL || sc->sc_dying) 629 return (EIO); 630 631 tp = sc->sc_tty; 632 633 sc->sc_refcnt++; 634 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 635 if (--sc->sc_refcnt < 0) 636 usb_detach_wakeupold(sc->sc_dev); 637 return (error); 638 } 639 640 int 641 ucomwrite(dev_t dev, struct uio *uio, int flag) 642 { 643 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 644 struct tty *tp; 645 int error; 646 647 if (sc == NULL || sc->sc_dying) 648 return (EIO); 649 650 tp = sc->sc_tty; 651 652 sc->sc_refcnt++; 653 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 654 if (--sc->sc_refcnt < 0) 655 usb_detach_wakeupold(sc->sc_dev); 656 return (error); 657 } 658 659 int 660 ucompoll(dev_t dev, int events, struct lwp *l) 661 { 662 struct ucom_softc *sc; 663 struct tty *tp; 664 int revents; 665 666 sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 667 if (sc == NULL || sc->sc_dying) 668 return (POLLHUP); 669 670 tp = sc->sc_tty; 671 672 sc->sc_refcnt++; 673 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 674 if (--sc->sc_refcnt < 0) 675 usb_detach_wakeupold(sc->sc_dev); 676 return (revents); 677 } 678 679 struct tty * 680 ucomtty(dev_t dev) 681 { 682 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 683 684 return ((sc != NULL) ? sc->sc_tty : NULL); 685 } 686 687 int 688 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 689 { 690 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 691 int error; 692 693 if (sc == NULL || sc->sc_dying) 694 return (EIO); 695 696 sc->sc_refcnt++; 697 error = ucom_do_ioctl(sc, cmd, data, flag, l); 698 if (--sc->sc_refcnt < 0) 699 usb_detach_wakeupold(sc->sc_dev); 700 return (error); 701 } 702 703 static int 704 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 705 int flag, struct lwp *l) 706 { 707 struct tty *tp = sc->sc_tty; 708 int error; 709 int s; 710 711 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 712 713 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 714 if (error != EPASSTHROUGH) 715 return (error); 716 717 error = ttioctl(tp, cmd, data, flag, l); 718 if (error != EPASSTHROUGH) 719 return (error); 720 721 if (sc->sc_methods->ucom_ioctl != NULL) { 722 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 723 sc->sc_portno, cmd, data, flag, l->l_proc); 724 if (error != EPASSTHROUGH) 725 return (error); 726 } 727 728 error = 0; 729 730 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 731 s = spltty(); 732 733 switch (cmd) { 734 case TIOCSBRK: 735 ucom_break(sc, 1); 736 break; 737 738 case TIOCCBRK: 739 ucom_break(sc, 0); 740 break; 741 742 case TIOCSDTR: 743 ucom_dtr(sc, 1); 744 break; 745 746 case TIOCCDTR: 747 ucom_dtr(sc, 0); 748 break; 749 750 case TIOCGFLAGS: 751 *(int *)data = sc->sc_swflags; 752 break; 753 754 case TIOCSFLAGS: 755 error = kauth_authorize_device_tty(l->l_cred, 756 KAUTH_DEVICE_TTY_PRIVSET, tp); 757 if (error) 758 break; 759 sc->sc_swflags = *(int *)data; 760 break; 761 762 case TIOCMSET: 763 case TIOCMBIS: 764 case TIOCMBIC: 765 tiocm_to_ucom(sc, cmd, *(int *)data); 766 break; 767 768 case TIOCMGET: 769 *(int *)data = ucom_to_tiocm(sc); 770 break; 771 772 default: 773 error = EPASSTHROUGH; 774 break; 775 } 776 777 splx(s); 778 779 return (error); 780 } 781 782 static void 783 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 784 { 785 u_char combits; 786 787 combits = 0; 788 if (ISSET(ttybits, TIOCM_DTR)) 789 SET(combits, UMCR_DTR); 790 if (ISSET(ttybits, TIOCM_RTS)) 791 SET(combits, UMCR_RTS); 792 793 switch (how) { 794 case TIOCMBIC: 795 CLR(sc->sc_mcr, combits); 796 break; 797 798 case TIOCMBIS: 799 SET(sc->sc_mcr, combits); 800 break; 801 802 case TIOCMSET: 803 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 804 SET(sc->sc_mcr, combits); 805 break; 806 } 807 808 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 809 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 810 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 811 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 812 } 813 814 static int 815 ucom_to_tiocm(struct ucom_softc *sc) 816 { 817 u_char combits; 818 int ttybits = 0; 819 820 combits = sc->sc_mcr; 821 if (ISSET(combits, UMCR_DTR)) 822 SET(ttybits, TIOCM_DTR); 823 if (ISSET(combits, UMCR_RTS)) 824 SET(ttybits, TIOCM_RTS); 825 826 combits = sc->sc_msr; 827 if (ISSET(combits, UMSR_DCD)) 828 SET(ttybits, TIOCM_CD); 829 if (ISSET(combits, UMSR_CTS)) 830 SET(ttybits, TIOCM_CTS); 831 if (ISSET(combits, UMSR_DSR)) 832 SET(ttybits, TIOCM_DSR); 833 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 834 SET(ttybits, TIOCM_RI); 835 836 #if 0 837 XXX; 838 if (sc->sc_ier != 0) 839 SET(ttybits, TIOCM_LE); 840 #endif 841 842 return (ttybits); 843 } 844 845 static void 846 ucom_break(struct ucom_softc *sc, int onoff) 847 { 848 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 849 850 if (sc->sc_methods->ucom_set != NULL) 851 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 852 UCOM_SET_BREAK, onoff); 853 } 854 855 static void 856 ucom_dtr(struct ucom_softc *sc, int onoff) 857 { 858 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 859 860 if (sc->sc_methods->ucom_set != NULL) 861 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 862 UCOM_SET_DTR, onoff); 863 } 864 865 static void 866 ucom_rts(struct ucom_softc *sc, int onoff) 867 { 868 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 869 870 if (sc->sc_methods->ucom_set != NULL) 871 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 872 UCOM_SET_RTS, onoff); 873 } 874 875 void 876 ucom_status_change(struct ucom_softc *sc) 877 { 878 struct tty *tp = sc->sc_tty; 879 u_char old_msr; 880 881 if (sc->sc_methods->ucom_get_status != NULL) { 882 old_msr = sc->sc_msr; 883 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 884 &sc->sc_lsr, &sc->sc_msr); 885 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) 886 (*tp->t_linesw->l_modem)(tp, 887 ISSET(sc->sc_msr, UMSR_DCD)); 888 } else { 889 sc->sc_lsr = 0; 890 /* Assume DCD is present, if we have no chance to check it. */ 891 sc->sc_msr = UMSR_DCD; 892 } 893 } 894 895 static int 896 ucomparam(struct tty *tp, struct termios *t) 897 { 898 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 899 UCOMUNIT(tp->t_dev)); 900 int error; 901 902 if (sc == NULL || sc->sc_dying) 903 return (EIO); 904 905 /* Check requested parameters. */ 906 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 907 return (EINVAL); 908 909 /* 910 * For the console, always force CLOCAL and !HUPCL, so that the port 911 * is always active. 912 */ 913 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 914 SET(t->c_cflag, CLOCAL); 915 CLR(t->c_cflag, HUPCL); 916 } 917 918 /* 919 * If there were no changes, don't do anything. This avoids dropping 920 * input and improves performance when all we did was frob things like 921 * VMIN and VTIME. 922 */ 923 if (tp->t_ospeed == t->c_ospeed && 924 tp->t_cflag == t->c_cflag) 925 return (0); 926 927 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 928 929 /* And copy to tty. */ 930 tp->t_ispeed = 0; 931 tp->t_ospeed = t->c_ospeed; 932 tp->t_cflag = t->c_cflag; 933 934 if (sc->sc_methods->ucom_param != NULL) { 935 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 936 t); 937 if (error) 938 return (error); 939 } 940 941 /* XXX worry about CHWFLOW */ 942 943 /* 944 * Update the tty layer's idea of the carrier bit, in case we changed 945 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 946 * explicit request. 947 */ 948 DPRINTF(("ucomparam: l_modem\n")); 949 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 950 951 #if 0 952 XXX what if the hardware is not open 953 if (!ISSET(t->c_cflag, CHWFLOW)) { 954 if (sc->sc_tx_stopped) { 955 sc->sc_tx_stopped = 0; 956 ucomstart(tp); 957 } 958 } 959 #endif 960 961 return (0); 962 } 963 964 static int 965 ucomhwiflow(struct tty *tp, int block) 966 { 967 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 968 UCOMUNIT(tp->t_dev)); 969 int old; 970 971 if (sc == NULL) 972 return (0); 973 974 old = sc->sc_rx_stopped; 975 sc->sc_rx_stopped = (u_char)block; 976 977 if (old && !block) { 978 int s = splusb(); 979 sc->sc_rx_unblock = 1; 980 softint_schedule(sc->sc_si); 981 splx(s); 982 } 983 984 return (1); 985 } 986 987 static void 988 ucomstart(struct tty *tp) 989 { 990 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 991 UCOMUNIT(tp->t_dev)); 992 struct ucom_buffer *ub; 993 int s; 994 u_char *data; 995 int cnt; 996 997 if (sc == NULL || sc->sc_dying) 998 return; 999 1000 s = spltty(); 1001 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1002 goto out; 1003 if (sc->sc_tx_stopped) 1004 goto out; 1005 1006 if (!ttypull(tp)) 1007 goto out; 1008 1009 /* Grab the first contiguous region of buffer space. */ 1010 data = tp->t_outq.c_cf; 1011 cnt = ndqb(&tp->t_outq, 0); 1012 1013 if (cnt == 0) 1014 goto out; 1015 1016 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1017 if (ub == NULL) { 1018 SET(tp->t_state, TS_BUSY); 1019 goto out; 1020 } 1021 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1022 1023 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1024 SET(tp->t_state, TS_BUSY); 1025 1026 if (cnt > sc->sc_obufsize) 1027 cnt = sc->sc_obufsize; 1028 1029 if (sc->sc_methods->ucom_write != NULL) 1030 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1031 ub->ub_data, data, &cnt); 1032 else 1033 memcpy(ub->ub_data, data, cnt); 1034 1035 ub->ub_len = cnt; 1036 ub->ub_index = 0; 1037 1038 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1039 1040 softint_schedule(sc->sc_si); 1041 1042 out: 1043 splx(s); 1044 } 1045 1046 void 1047 ucomstop(struct tty *tp, int flag) 1048 { 1049 #if 0 1050 /*struct ucom_softc *sc = 1051 device_lookup_private(&ucom_cd, UCOMUNIT(tp->t_dev));*/ 1052 int s; 1053 1054 s = spltty(); 1055 if (ISSET(tp->t_state, TS_BUSY)) { 1056 /* sc->sc_tx_stopped = 1; */ 1057 if (!ISSET(tp->t_state, TS_TTSTOP)) 1058 SET(tp->t_state, TS_FLUSH); 1059 } 1060 splx(s); 1061 #endif 1062 } 1063 1064 static void 1065 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1066 usbd_status err) 1067 { 1068 struct tty *tp = sc->sc_tty; 1069 uint32_t cc = ub->ub_len; 1070 1071 switch (err) { 1072 case USBD_IN_PROGRESS: 1073 ub->ub_index = ub->ub_len; 1074 break; 1075 case USBD_STALLED: 1076 ub->ub_index = 0; 1077 softint_schedule(sc->sc_si); 1078 break; 1079 case USBD_NORMAL_COMPLETION: 1080 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1081 rnd_add_uint32(&sc->sc_rndsource, cc); 1082 /*FALLTHROUGH*/ 1083 default: 1084 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1085 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1086 cc -= sc->sc_opkthdrlen; 1087 1088 mutex_spin_enter(&tty_lock); 1089 CLR(tp->t_state, TS_BUSY); 1090 if (ISSET(tp->t_state, TS_FLUSH)) 1091 CLR(tp->t_state, TS_FLUSH); 1092 else 1093 ndflush(&tp->t_outq, cc); 1094 mutex_spin_exit(&tty_lock); 1095 1096 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1097 !sc->sc_dying) { 1098 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1099 ucom_submit_write(sc, ub); 1100 1101 (*tp->t_linesw->l_start)(tp); 1102 } 1103 break; 1104 } 1105 } 1106 1107 /* Call at spltty() */ 1108 static void 1109 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1110 { 1111 1112 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1113 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1114 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1115 1116 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1117 } 1118 1119 static void 1120 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1121 { 1122 struct ucom_softc *sc = (struct ucom_softc *)p; 1123 int s; 1124 1125 s = spltty(); 1126 1127 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1128 1129 splx(s); 1130 } 1131 1132 static void 1133 ucom_softintr(void *arg) 1134 { 1135 struct ucom_softc *sc = arg; 1136 struct tty *tp = sc->sc_tty; 1137 struct ucom_buffer *ub; 1138 int s; 1139 1140 if (!ISSET(tp->t_state, TS_ISOPEN)) 1141 return; 1142 1143 s = spltty(); 1144 1145 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1146 1147 if (ub != NULL && ub->ub_index == 0) 1148 ucom_submit_write(sc, ub); 1149 1150 if (sc->sc_rx_unblock) 1151 ucom_read_complete(sc); 1152 1153 splx(s); 1154 } 1155 1156 static void 1157 ucom_read_complete(struct ucom_softc *sc) 1158 { 1159 int (*rint)(int, struct tty *); 1160 struct ucom_buffer *ub; 1161 struct tty *tp; 1162 int s; 1163 1164 tp = sc->sc_tty; 1165 rint = tp->t_linesw->l_rint; 1166 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1167 1168 while (ub != NULL && !sc->sc_rx_stopped) { 1169 1170 s = spltty(); 1171 1172 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1173 /* Give characters to tty layer. */ 1174 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1175 /* Overflow: drop remainder */ 1176 ub->ub_index = ub->ub_len; 1177 } else 1178 ub->ub_index++; 1179 } 1180 1181 splx(s); 1182 1183 if (ub->ub_index == ub->ub_len) { 1184 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1185 1186 ucomsubmitread(sc, ub); 1187 1188 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1189 } 1190 } 1191 1192 sc->sc_rx_unblock = (ub != NULL); 1193 } 1194 1195 static usbd_status 1196 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1197 { 1198 usbd_status err; 1199 1200 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1201 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1202 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1203 1204 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1205 /* XXX: Recover from this, please! */ 1206 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1207 return (err); 1208 } 1209 1210 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1211 1212 return (USBD_NORMAL_COMPLETION); 1213 } 1214 1215 static void 1216 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1217 { 1218 struct ucom_softc *sc = (struct ucom_softc *)p; 1219 struct tty *tp = sc->sc_tty; 1220 struct ucom_buffer *ub; 1221 u_int32_t cc; 1222 u_char *cp; 1223 int s; 1224 1225 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1226 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1227 1228 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1229 sc->sc_dying) { 1230 DPRINTF(("ucomreadcb: dying\n")); 1231 ub->ub_index = ub->ub_len = 0; 1232 /* Send something to wake upper layer */ 1233 s = spltty(); 1234 if (status != USBD_CANCELLED) { 1235 (tp->t_linesw->l_rint)('\n', tp); 1236 mutex_spin_enter(&tty_lock); /* XXX */ 1237 ttwakeup(tp); 1238 mutex_spin_exit(&tty_lock); /* XXX */ 1239 } 1240 splx(s); 1241 return; 1242 } 1243 1244 if (status == USBD_STALLED) { 1245 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1246 ucomsubmitread(sc, ub); 1247 return; 1248 } 1249 1250 if (status != USBD_NORMAL_COMPLETION) { 1251 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1252 return; 1253 } 1254 1255 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1256 1257 #ifdef UCOM_DEBUG 1258 /* This is triggered by uslsa(4) occasionally. */ 1259 if ((ucomdebug > 0) && (cc == 0)) { 1260 device_printf(sc->sc_dev, "ucomreadcb: zero length xfer!\n"); 1261 } 1262 #endif 1263 1264 KDASSERT(cp == ub->ub_data); 1265 1266 rnd_add_uint32(&sc->sc_rndsource, cc); 1267 1268 if (sc->sc_opening) { 1269 ucomsubmitread(sc, ub); 1270 return; 1271 } 1272 1273 if (sc->sc_methods->ucom_read != NULL) { 1274 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1275 &cp, &cc); 1276 ub->ub_index = (u_int)(cp - ub->ub_data); 1277 } else 1278 ub->ub_index = 0; 1279 1280 ub->ub_len = cc; 1281 1282 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1283 1284 ucom_read_complete(sc); 1285 } 1286 1287 static void 1288 ucom_cleanup(struct ucom_softc *sc) 1289 { 1290 struct ucom_buffer *ub; 1291 1292 DPRINTF(("ucom_cleanup: closing pipes\n")); 1293 1294 ucom_shutdown(sc); 1295 if (sc->sc_bulkin_pipe != NULL) { 1296 usbd_abort_pipe(sc->sc_bulkin_pipe); 1297 usbd_close_pipe(sc->sc_bulkin_pipe); 1298 sc->sc_bulkin_pipe = NULL; 1299 } 1300 if (sc->sc_bulkout_pipe != NULL) { 1301 usbd_abort_pipe(sc->sc_bulkout_pipe); 1302 usbd_close_pipe(sc->sc_bulkout_pipe); 1303 sc->sc_bulkout_pipe = NULL; 1304 } 1305 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1306 if (ub->ub_xfer != NULL) { 1307 usbd_free_xfer(ub->ub_xfer); 1308 ub->ub_xfer = NULL; 1309 ub->ub_data = NULL; 1310 } 1311 } 1312 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){ 1313 if (ub->ub_xfer != NULL) { 1314 usbd_free_xfer(ub->ub_xfer); 1315 ub->ub_xfer = NULL; 1316 ub->ub_data = NULL; 1317 } 1318 } 1319 } 1320 1321 #endif /* NUCOM > 0 */ 1322 1323 int 1324 ucomprint(void *aux, const char *pnp) 1325 { 1326 struct ucom_attach_args *uca = aux; 1327 1328 if (pnp) 1329 aprint_normal("ucom at %s", pnp); 1330 if (uca->portno != UCOM_UNK_PORTNO) 1331 aprint_normal(" portno %d", uca->portno); 1332 return (UNCONF); 1333 } 1334 1335 int 1336 ucomsubmatch(device_t parent, cfdata_t cf, 1337 const int *ldesc, void *aux) 1338 { 1339 struct ucom_attach_args *uca = aux; 1340 1341 if (uca->portno != UCOM_UNK_PORTNO && 1342 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1343 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1344 return (0); 1345 return (config_match(parent, cf, aux)); 1346 } 1347
Indexes created Mon Oct 20 20:10:13 GMT 2025