ucom.c revision 1.82.2.3
1 /* $NetBSD: ucom.c,v 1.82.2.3 2010/11/06 08:08:37 uebayasi 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 1.82.2.3 2010/11/06 08:08:37 uebayasi 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 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 rndsource_element_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 = ttymalloc(); 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 ttyfree(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 if (sc == NULL) 374 return (ENXIO); 375 376 if (sc->sc_dying) 377 return (EIO); 378 379 if (!device_is_active(sc->sc_dev)) 380 return (ENXIO); 381 382 tp = sc->sc_tty; 383 384 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp)); 385 386 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 387 return (EBUSY); 388 389 s = spltty(); 390 391 /* 392 * Do the following iff this is a first open. 393 */ 394 while (sc->sc_opening) 395 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0); 396 397 if (sc->sc_dying) { 398 splx(s); 399 return (EIO); 400 } 401 sc->sc_opening = 1; 402 403 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 404 struct termios t; 405 406 tp->t_dev = dev; 407 408 if (sc->sc_methods->ucom_open != NULL) { 409 error = sc->sc_methods->ucom_open(sc->sc_parent, 410 sc->sc_portno); 411 if (error) { 412 ucom_cleanup(sc); 413 sc->sc_opening = 0; 414 wakeup(&sc->sc_opening); 415 splx(s); 416 return (error); 417 } 418 } 419 420 ucom_status_change(sc); 421 422 /* 423 * Initialize the termios status to the defaults. Add in the 424 * sticky bits from TIOCSFLAGS. 425 */ 426 t.c_ispeed = 0; 427 t.c_ospeed = TTYDEF_SPEED; 428 t.c_cflag = TTYDEF_CFLAG; 429 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 430 SET(t.c_cflag, CLOCAL); 431 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 432 SET(t.c_cflag, CRTSCTS); 433 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 434 SET(t.c_cflag, MDMBUF); 435 /* Make sure ucomparam() will do something. */ 436 tp->t_ospeed = 0; 437 (void) ucomparam(tp, &t); 438 tp->t_iflag = TTYDEF_IFLAG; 439 tp->t_oflag = TTYDEF_OFLAG; 440 tp->t_lflag = TTYDEF_LFLAG; 441 ttychars(tp); 442 ttsetwater(tp); 443 444 /* 445 * Turn on DTR. We must always do this, even if carrier is not 446 * present, because otherwise we'd have to use TIOCSDTR 447 * immediately after setting CLOCAL, which applications do not 448 * expect. We always assert DTR while the device is open 449 * unless explicitly requested to deassert it. Ditto RTS. 450 */ 451 ucom_dtr(sc, 1); 452 ucom_rts(sc, 1); 453 454 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 455 sc->sc_bulkin_no, sc->sc_bulkout_no)); 456 457 /* Open the bulk pipes */ 458 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 459 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 460 if (err) { 461 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 462 device_xname(sc->sc_dev), sc->sc_bulkin_no, 463 usbd_errstr(err))); 464 error = EIO; 465 goto fail_0; 466 } 467 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 468 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 469 if (err) { 470 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 471 device_xname(sc->sc_dev), sc->sc_bulkout_no, 472 usbd_errstr(err))); 473 error = EIO; 474 goto fail_1; 475 } 476 477 sc->sc_rx_unblock = 0; 478 sc->sc_rx_stopped = 0; 479 sc->sc_tx_stopped = 0; 480 481 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 482 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 483 484 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 485 SIMPLEQ_INIT(&sc->sc_ibuff_full); 486 SIMPLEQ_INIT(&sc->sc_obuff_free); 487 SIMPLEQ_INIT(&sc->sc_obuff_full); 488 489 /* Allocate input buffers */ 490 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 491 ub++) { 492 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 493 if (ub->ub_xfer == NULL) { 494 error = ENOMEM; 495 goto fail_2; 496 } 497 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 498 sc->sc_ibufsizepad); 499 if (ub->ub_data == NULL) { 500 error = ENOMEM; 501 goto fail_2; 502 } 503 504 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 505 error = EIO; 506 goto fail_2; 507 } 508 } 509 510 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 511 ub++) { 512 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 513 if (ub->ub_xfer == NULL) { 514 error = ENOMEM; 515 goto fail_2; 516 } 517 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 518 sc->sc_obufsize); 519 if (ub->ub_data == NULL) { 520 error = ENOMEM; 521 goto fail_2; 522 } 523 524 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 525 } 526 527 } 528 sc->sc_opening = 0; 529 wakeup(&sc->sc_opening); 530 splx(s); 531 532 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 533 if (error) 534 goto bad; 535 536 error = (*tp->t_linesw->l_open)(dev, tp); 537 if (error) 538 goto bad; 539 540 return (0); 541 542 fail_2: 543 usbd_abort_pipe(sc->sc_bulkin_pipe); 544 for (i = 0; i < UCOM_IN_BUFFS; i++) { 545 if (sc->sc_ibuff[i].ub_xfer != NULL) { 546 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 547 sc->sc_ibuff[i].ub_xfer = NULL; 548 sc->sc_ibuff[i].ub_data = NULL; 549 } 550 } 551 usbd_abort_pipe(sc->sc_bulkout_pipe); 552 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 553 if (sc->sc_obuff[i].ub_xfer != NULL) { 554 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 555 sc->sc_obuff[i].ub_xfer = NULL; 556 sc->sc_obuff[i].ub_data = NULL; 557 } 558 } 559 560 usbd_close_pipe(sc->sc_bulkout_pipe); 561 sc->sc_bulkout_pipe = NULL; 562 fail_1: 563 usbd_close_pipe(sc->sc_bulkin_pipe); 564 sc->sc_bulkin_pipe = NULL; 565 fail_0: 566 sc->sc_opening = 0; 567 wakeup(&sc->sc_opening); 568 splx(s); 569 return (error); 570 571 bad: 572 s = spltty(); 573 CLR(tp->t_state, TS_BUSY); 574 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 575 /* 576 * We failed to open the device, and nobody else had it opened. 577 * Clean up the state as appropriate. 578 */ 579 ucom_cleanup(sc); 580 } 581 splx(s); 582 583 return (error); 584 } 585 586 int 587 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 588 { 589 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 590 struct tty *tp = sc->sc_tty; 591 int s; 592 593 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 594 if (!ISSET(tp->t_state, TS_ISOPEN)) 595 return (0); 596 597 s = spltty(); 598 sc->sc_refcnt++; 599 CLR(tp->t_state, TS_BUSY); 600 601 (*tp->t_linesw->l_close)(tp, flag); 602 ttyclose(tp); 603 604 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 605 /* 606 * Although we got a last close, the device may still be in 607 * use; e.g. if this was the dialout node, and there are still 608 * processes waiting for carrier on the non-dialout node. 609 */ 610 ucom_cleanup(sc); 611 } 612 613 if (sc->sc_methods->ucom_close != NULL) 614 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno); 615 616 if (--sc->sc_refcnt < 0) 617 usb_detach_wakeup(sc->sc_dev); 618 splx(s); 619 620 return (0); 621 } 622 623 int 624 ucomread(dev_t dev, struct uio *uio, int flag) 625 { 626 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 627 struct tty *tp = sc->sc_tty; 628 int error; 629 630 if (sc->sc_dying) 631 return (EIO); 632 633 sc->sc_refcnt++; 634 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 635 if (--sc->sc_refcnt < 0) 636 usb_detach_wakeup(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 = sc->sc_tty; 645 int error; 646 647 if (sc->sc_dying) 648 return (EIO); 649 650 sc->sc_refcnt++; 651 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 652 if (--sc->sc_refcnt < 0) 653 usb_detach_wakeup(sc->sc_dev); 654 return (error); 655 } 656 657 int 658 ucompoll(dev_t dev, int events, struct lwp *l) 659 { 660 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 661 struct tty *tp = sc->sc_tty; 662 int revents; 663 664 if (sc->sc_dying) 665 return (POLLHUP); 666 667 sc->sc_refcnt++; 668 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 669 if (--sc->sc_refcnt < 0) 670 usb_detach_wakeup(sc->sc_dev); 671 return (revents); 672 } 673 674 struct tty * 675 ucomtty(dev_t dev) 676 { 677 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 678 struct tty *tp = sc->sc_tty; 679 680 return (tp); 681 } 682 683 int 684 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 685 { 686 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 687 int error; 688 689 sc->sc_refcnt++; 690 error = ucom_do_ioctl(sc, cmd, data, flag, l); 691 if (--sc->sc_refcnt < 0) 692 usb_detach_wakeup(sc->sc_dev); 693 return (error); 694 } 695 696 static int 697 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 698 int flag, struct lwp *l) 699 { 700 struct tty *tp = sc->sc_tty; 701 int error; 702 int s; 703 704 if (sc->sc_dying) 705 return (EIO); 706 707 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 708 709 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 710 if (error != EPASSTHROUGH) 711 return (error); 712 713 error = ttioctl(tp, cmd, data, flag, l); 714 if (error != EPASSTHROUGH) 715 return (error); 716 717 if (sc->sc_methods->ucom_ioctl != NULL) { 718 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 719 sc->sc_portno, cmd, data, flag, l->l_proc); 720 if (error != EPASSTHROUGH) 721 return (error); 722 } 723 724 error = 0; 725 726 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 727 s = spltty(); 728 729 switch (cmd) { 730 case TIOCSBRK: 731 ucom_break(sc, 1); 732 break; 733 734 case TIOCCBRK: 735 ucom_break(sc, 0); 736 break; 737 738 case TIOCSDTR: 739 ucom_dtr(sc, 1); 740 break; 741 742 case TIOCCDTR: 743 ucom_dtr(sc, 0); 744 break; 745 746 case TIOCGFLAGS: 747 *(int *)data = sc->sc_swflags; 748 break; 749 750 case TIOCSFLAGS: 751 error = kauth_authorize_device_tty(l->l_cred, 752 KAUTH_DEVICE_TTY_PRIVSET, tp); 753 if (error) 754 break; 755 sc->sc_swflags = *(int *)data; 756 break; 757 758 case TIOCMSET: 759 case TIOCMBIS: 760 case TIOCMBIC: 761 tiocm_to_ucom(sc, cmd, *(int *)data); 762 break; 763 764 case TIOCMGET: 765 *(int *)data = ucom_to_tiocm(sc); 766 break; 767 768 default: 769 error = EPASSTHROUGH; 770 break; 771 } 772 773 splx(s); 774 775 return (error); 776 } 777 778 static void 779 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 780 { 781 u_char combits; 782 783 combits = 0; 784 if (ISSET(ttybits, TIOCM_DTR)) 785 SET(combits, UMCR_DTR); 786 if (ISSET(ttybits, TIOCM_RTS)) 787 SET(combits, UMCR_RTS); 788 789 switch (how) { 790 case TIOCMBIC: 791 CLR(sc->sc_mcr, combits); 792 break; 793 794 case TIOCMBIS: 795 SET(sc->sc_mcr, combits); 796 break; 797 798 case TIOCMSET: 799 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 800 SET(sc->sc_mcr, combits); 801 break; 802 } 803 804 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 805 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 806 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 807 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 808 } 809 810 static int 811 ucom_to_tiocm(struct ucom_softc *sc) 812 { 813 u_char combits; 814 int ttybits = 0; 815 816 combits = sc->sc_mcr; 817 if (ISSET(combits, UMCR_DTR)) 818 SET(ttybits, TIOCM_DTR); 819 if (ISSET(combits, UMCR_RTS)) 820 SET(ttybits, TIOCM_RTS); 821 822 combits = sc->sc_msr; 823 if (ISSET(combits, UMSR_DCD)) 824 SET(ttybits, TIOCM_CD); 825 if (ISSET(combits, UMSR_CTS)) 826 SET(ttybits, TIOCM_CTS); 827 if (ISSET(combits, UMSR_DSR)) 828 SET(ttybits, TIOCM_DSR); 829 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 830 SET(ttybits, TIOCM_RI); 831 832 #if 0 833 XXX; 834 if (sc->sc_ier != 0) 835 SET(ttybits, TIOCM_LE); 836 #endif 837 838 return (ttybits); 839 } 840 841 static void 842 ucom_break(struct ucom_softc *sc, int onoff) 843 { 844 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 845 846 if (sc->sc_methods->ucom_set != NULL) 847 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 848 UCOM_SET_BREAK, onoff); 849 } 850 851 static void 852 ucom_dtr(struct ucom_softc *sc, int onoff) 853 { 854 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 855 856 if (sc->sc_methods->ucom_set != NULL) 857 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 858 UCOM_SET_DTR, onoff); 859 } 860 861 static void 862 ucom_rts(struct ucom_softc *sc, int onoff) 863 { 864 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 865 866 if (sc->sc_methods->ucom_set != NULL) 867 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 868 UCOM_SET_RTS, onoff); 869 } 870 871 void 872 ucom_status_change(struct ucom_softc *sc) 873 { 874 struct tty *tp = sc->sc_tty; 875 u_char old_msr; 876 877 if (sc->sc_methods->ucom_get_status != NULL) { 878 old_msr = sc->sc_msr; 879 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 880 &sc->sc_lsr, &sc->sc_msr); 881 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) 882 (*tp->t_linesw->l_modem)(tp, 883 ISSET(sc->sc_msr, UMSR_DCD)); 884 } else { 885 sc->sc_lsr = 0; 886 /* Assume DCD is present, if we have no chance to check it. */ 887 sc->sc_msr = UMSR_DCD; 888 } 889 } 890 891 static int 892 ucomparam(struct tty *tp, struct termios *t) 893 { 894 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 895 UCOMUNIT(tp->t_dev)); 896 int error; 897 898 if (sc->sc_dying) 899 return (EIO); 900 901 /* Check requested parameters. */ 902 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 903 return (EINVAL); 904 905 /* 906 * For the console, always force CLOCAL and !HUPCL, so that the port 907 * is always active. 908 */ 909 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 910 SET(t->c_cflag, CLOCAL); 911 CLR(t->c_cflag, HUPCL); 912 } 913 914 /* 915 * If there were no changes, don't do anything. This avoids dropping 916 * input and improves performance when all we did was frob things like 917 * VMIN and VTIME. 918 */ 919 if (tp->t_ospeed == t->c_ospeed && 920 tp->t_cflag == t->c_cflag) 921 return (0); 922 923 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 924 925 /* And copy to tty. */ 926 tp->t_ispeed = 0; 927 tp->t_ospeed = t->c_ospeed; 928 tp->t_cflag = t->c_cflag; 929 930 if (sc->sc_methods->ucom_param != NULL) { 931 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 932 t); 933 if (error) 934 return (error); 935 } 936 937 /* XXX worry about CHWFLOW */ 938 939 /* 940 * Update the tty layer's idea of the carrier bit, in case we changed 941 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 942 * explicit request. 943 */ 944 DPRINTF(("ucomparam: l_modem\n")); 945 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 946 947 #if 0 948 XXX what if the hardware is not open 949 if (!ISSET(t->c_cflag, CHWFLOW)) { 950 if (sc->sc_tx_stopped) { 951 sc->sc_tx_stopped = 0; 952 ucomstart(tp); 953 } 954 } 955 #endif 956 957 return (0); 958 } 959 960 static int 961 ucomhwiflow(struct tty *tp, int block) 962 { 963 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 964 UCOMUNIT(tp->t_dev)); 965 int old; 966 967 old = sc->sc_rx_stopped; 968 sc->sc_rx_stopped = (u_char)block; 969 970 if (old && !block) { 971 int s = splusb(); 972 sc->sc_rx_unblock = 1; 973 softint_schedule(sc->sc_si); 974 splx(s); 975 } 976 977 return (1); 978 } 979 980 static void 981 ucomstart(struct tty *tp) 982 { 983 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 984 UCOMUNIT(tp->t_dev)); 985 struct ucom_buffer *ub; 986 int s; 987 u_char *data; 988 int cnt; 989 990 if (sc->sc_dying) 991 return; 992 993 s = spltty(); 994 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 995 goto out; 996 if (sc->sc_tx_stopped) 997 goto out; 998 999 if (!ttypull(tp)) 1000 goto out; 1001 1002 /* Grab the first contiguous region of buffer space. */ 1003 data = tp->t_outq.c_cf; 1004 cnt = ndqb(&tp->t_outq, 0); 1005 1006 if (cnt == 0) 1007 goto out; 1008 1009 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1010 KASSERT(ub != NULL); 1011 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1012 1013 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1014 SET(tp->t_state, TS_BUSY); 1015 1016 if (cnt > sc->sc_obufsize) 1017 cnt = sc->sc_obufsize; 1018 1019 if (sc->sc_methods->ucom_write != NULL) 1020 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1021 ub->ub_data, data, &cnt); 1022 else 1023 memcpy(ub->ub_data, data, cnt); 1024 1025 ub->ub_len = cnt; 1026 ub->ub_index = 0; 1027 1028 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1029 1030 softint_schedule(sc->sc_si); 1031 1032 out: 1033 splx(s); 1034 } 1035 1036 void 1037 ucomstop(struct tty *tp, int flag) 1038 { 1039 #if 0 1040 /*struct ucom_softc *sc = 1041 device_lookup_private(&ucom_cd, UCOMUNIT(dev));*/ 1042 int s; 1043 1044 s = spltty(); 1045 if (ISSET(tp->t_state, TS_BUSY)) { 1046 /* sc->sc_tx_stopped = 1; */ 1047 if (!ISSET(tp->t_state, TS_TTSTOP)) 1048 SET(tp->t_state, TS_FLUSH); 1049 } 1050 splx(s); 1051 #endif 1052 } 1053 1054 static void 1055 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1056 usbd_status err) 1057 { 1058 struct tty *tp = sc->sc_tty; 1059 uint32_t cc = ub->ub_len; 1060 1061 switch (err) { 1062 case USBD_IN_PROGRESS: 1063 ub->ub_index = ub->ub_len; 1064 break; 1065 case USBD_STALLED: 1066 ub->ub_index = 0; 1067 softint_schedule(sc->sc_si); 1068 break; 1069 case USBD_NORMAL_COMPLETION: 1070 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1071 #if defined(__NetBSD__) && NRND > 0 1072 rnd_add_uint32(&sc->sc_rndsource, cc); 1073 #endif 1074 /*FALLTHROUGH*/ 1075 default: 1076 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1077 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1078 cc -= sc->sc_opkthdrlen; 1079 1080 CLR(tp->t_state, TS_BUSY); 1081 if (ISSET(tp->t_state, TS_FLUSH)) 1082 CLR(tp->t_state, TS_FLUSH); 1083 else 1084 ndflush(&tp->t_outq, cc); 1085 1086 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1087 !sc->sc_dying) { 1088 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1089 ucom_submit_write(sc, ub); 1090 1091 (*tp->t_linesw->l_start)(tp); 1092 } 1093 break; 1094 } 1095 } 1096 1097 /* Call at spltty() */ 1098 static void 1099 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1100 { 1101 1102 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1103 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1104 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1105 1106 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1107 } 1108 1109 static void 1110 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1111 { 1112 struct ucom_softc *sc = (struct ucom_softc *)p; 1113 int s; 1114 1115 s = spltty(); 1116 1117 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1118 1119 splx(s); 1120 } 1121 1122 static void 1123 ucom_softintr(void *arg) 1124 { 1125 struct ucom_softc *sc = arg; 1126 struct tty *tp = sc->sc_tty; 1127 struct ucom_buffer *ub; 1128 int s; 1129 1130 if (!ISSET(tp->t_state, TS_ISOPEN)) 1131 return; 1132 1133 s = spltty(); 1134 1135 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1136 1137 if (ub != NULL && ub->ub_index == 0) 1138 ucom_submit_write(sc, ub); 1139 1140 if (sc->sc_rx_unblock) 1141 ucom_read_complete(sc); 1142 1143 splx(s); 1144 } 1145 1146 static void 1147 ucom_read_complete(struct ucom_softc *sc) 1148 { 1149 int (*rint)(int, struct tty *); 1150 struct ucom_buffer *ub; 1151 struct tty *tp; 1152 int s; 1153 1154 tp = sc->sc_tty; 1155 rint = tp->t_linesw->l_rint; 1156 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1157 1158 while (ub != NULL && !sc->sc_rx_stopped) { 1159 1160 s = spltty(); 1161 1162 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1163 /* Give characters to tty layer. */ 1164 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1165 /* Overflow: drop remainder */ 1166 ub->ub_index = ub->ub_len; 1167 } else 1168 ub->ub_index++; 1169 } 1170 1171 splx(s); 1172 1173 if (ub->ub_index == ub->ub_len) { 1174 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1175 1176 ucomsubmitread(sc, ub); 1177 1178 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1179 } 1180 } 1181 1182 sc->sc_rx_unblock = (ub != NULL); 1183 } 1184 1185 static usbd_status 1186 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1187 { 1188 usbd_status err; 1189 1190 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1191 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1192 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1193 1194 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1195 /* XXX: Recover from this, please! */ 1196 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1197 return (err); 1198 } 1199 1200 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1201 1202 return (USBD_NORMAL_COMPLETION); 1203 } 1204 1205 static void 1206 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1207 { 1208 struct ucom_softc *sc = (struct ucom_softc *)p; 1209 struct tty *tp = sc->sc_tty; 1210 struct ucom_buffer *ub; 1211 u_int32_t cc; 1212 u_char *cp; 1213 int s; 1214 1215 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1216 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1217 1218 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1219 sc->sc_dying) { 1220 DPRINTF(("ucomreadcb: dying\n")); 1221 ub->ub_index = ub->ub_len = 0; 1222 /* Send something to wake upper layer */ 1223 s = spltty(); 1224 if (status != USBD_CANCELLED) { 1225 (tp->t_linesw->l_rint)('\n', tp); 1226 mutex_spin_enter(&tty_lock); /* XXX */ 1227 ttwakeup(tp); 1228 mutex_spin_exit(&tty_lock); /* XXX */ 1229 } 1230 splx(s); 1231 return; 1232 } 1233 1234 if (status == USBD_STALLED) { 1235 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1236 ucomsubmitread(sc, ub); 1237 return; 1238 } 1239 1240 if (status != USBD_NORMAL_COMPLETION) { 1241 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1242 return; 1243 } 1244 1245 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1246 1247 if (cc == 0) { 1248 aprint_normal_dev(sc->sc_dev, 1249 "ucomreadcb: zero length xfer!\n"); 1250 } 1251 1252 KDASSERT(cp == ub->ub_data); 1253 1254 #if defined(__NetBSD__) && NRND > 0 1255 rnd_add_uint32(&sc->sc_rndsource, cc); 1256 #endif 1257 1258 if (sc->sc_opening) { 1259 ucomsubmitread(sc, ub); 1260 return; 1261 } 1262 1263 if (sc->sc_methods->ucom_read != NULL) { 1264 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1265 &cp, &cc); 1266 ub->ub_index = (u_int)(cp - ub->ub_data); 1267 } else 1268 ub->ub_index = 0; 1269 1270 ub->ub_len = cc; 1271 1272 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1273 1274 ucom_read_complete(sc); 1275 } 1276 1277 static void 1278 ucom_cleanup(struct ucom_softc *sc) 1279 { 1280 struct ucom_buffer *ub; 1281 1282 DPRINTF(("ucom_cleanup: closing pipes\n")); 1283 1284 ucom_shutdown(sc); 1285 if (sc->sc_bulkin_pipe != NULL) { 1286 usbd_abort_pipe(sc->sc_bulkin_pipe); 1287 usbd_close_pipe(sc->sc_bulkin_pipe); 1288 sc->sc_bulkin_pipe = NULL; 1289 } 1290 if (sc->sc_bulkout_pipe != NULL) { 1291 usbd_abort_pipe(sc->sc_bulkout_pipe); 1292 usbd_close_pipe(sc->sc_bulkout_pipe); 1293 sc->sc_bulkout_pipe = NULL; 1294 } 1295 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1296 if (ub->ub_xfer != NULL) { 1297 usbd_free_xfer(ub->ub_xfer); 1298 ub->ub_xfer = NULL; 1299 ub->ub_data = NULL; 1300 } 1301 } 1302 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){ 1303 if (ub->ub_xfer != NULL) { 1304 usbd_free_xfer(ub->ub_xfer); 1305 ub->ub_xfer = NULL; 1306 ub->ub_data = NULL; 1307 } 1308 } 1309 } 1310 1311 #endif /* NUCOM > 0 */ 1312 1313 int 1314 ucomprint(void *aux, const char *pnp) 1315 { 1316 struct ucom_attach_args *uca = aux; 1317 1318 if (pnp) 1319 aprint_normal("ucom at %s", pnp); 1320 if (uca->portno != UCOM_UNK_PORTNO) 1321 aprint_normal(" portno %d", uca->portno); 1322 return (UNCONF); 1323 } 1324 1325 int 1326 ucomsubmatch(device_t parent, cfdata_t cf, 1327 const int *ldesc, void *aux) 1328 { 1329 struct ucom_attach_args *uca = aux; 1330 1331 if (uca->portno != UCOM_UNK_PORTNO && 1332 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1333 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1334 return (0); 1335 return (config_match(parent, cf, aux)); 1336 } 1337
Indexes created Tue Oct 21 19:09:51 GMT 2025