1 /* $NetBSD: ucom.c,v 1.110 2015/11/08 21:05:01 joerg 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 1.110 2015/11/08 21:05:01 joerg 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/timepps.h> 54 #include <sys/rndsource.h> 55 56 #include <dev/usb/usb.h> 57 58 #include <dev/usb/usbdi.h> 59 #include <dev/usb/usbdi_util.h> 60 #include <dev/usb/usbdevs.h> 61 #include <dev/usb/usb_quirks.h> 62 63 #include <dev/usb/ucomvar.h> 64 65 #include "ucom.h" 66 67 #include "locators.h" 68 69 #if NUCOM > 0 70 71 #ifdef UCOM_DEBUG 72 #define DPRINTFN(n, x) if (ucomdebug > (n)) printf x 73 int ucomdebug = 0; 74 #else 75 #define DPRINTFN(n, x) 76 #endif 77 #define DPRINTF(x) DPRINTFN(0, x) 78 79 #define UCOMCALLUNIT_MASK TTCALLUNIT_MASK 80 #define UCOMUNIT_MASK TTUNIT_MASK 81 #define UCOMDIALOUT_MASK TTDIALOUT_MASK 82 83 #define UCOMCALLUNIT(x) TTCALLUNIT(x) 84 #define UCOMUNIT(x) TTUNIT(x) 85 #define UCOMDIALOUT(x) TTDIALOUT(x) 86 87 /* 88 * XXX: We can submit multiple input/output buffers to the usb stack 89 * to improve throughput, but the usb stack is too lame to deal with this 90 * in a number of places. 91 */ 92 #define UCOM_IN_BUFFS 1 93 #define UCOM_OUT_BUFFS 1 94 95 struct ucom_buffer { 96 SIMPLEQ_ENTRY(ucom_buffer) ub_link; 97 usbd_xfer_handle ub_xfer; 98 u_char *ub_data; 99 u_int ub_len; 100 u_int ub_index; 101 }; 102 103 struct ucom_softc { 104 device_t sc_dev; /* base device */ 105 106 usbd_device_handle sc_udev; /* USB device */ 107 108 usbd_interface_handle sc_iface; /* data interface */ 109 110 int sc_bulkin_no; /* bulk in endpoint address */ 111 usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */ 112 u_int sc_ibufsize; /* read buffer size */ 113 u_int sc_ibufsizepad; /* read buffer size padded */ 114 struct ucom_buffer sc_ibuff[UCOM_IN_BUFFS]; 115 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_empty; 116 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_full; 117 118 int sc_bulkout_no; /* bulk out endpoint address */ 119 usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */ 120 u_int sc_obufsize; /* write buffer size */ 121 u_int sc_opkthdrlen; /* header length of */ 122 struct ucom_buffer sc_obuff[UCOM_OUT_BUFFS]; 123 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_free; 124 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_full; 125 126 void *sc_si; 127 128 const struct ucom_methods *sc_methods; 129 void *sc_parent; 130 int sc_portno; 131 132 struct tty *sc_tty; /* our tty */ 133 u_char sc_lsr; 134 u_char sc_msr; 135 u_char sc_mcr; 136 volatile u_char sc_rx_stopped; 137 u_char sc_rx_unblock; 138 u_char sc_tx_stopped; 139 int sc_swflags; 140 141 u_char sc_opening; /* lock during open */ 142 int sc_refcnt; 143 u_char sc_dying; /* disconnecting */ 144 145 struct pps_state sc_pps_state; /* pps state */ 146 147 krndsource_t sc_rndsource; /* random source */ 148 }; 149 150 dev_type_open(ucomopen); 151 dev_type_close(ucomclose); 152 dev_type_read(ucomread); 153 dev_type_write(ucomwrite); 154 dev_type_ioctl(ucomioctl); 155 dev_type_stop(ucomstop); 156 dev_type_tty(ucomtty); 157 dev_type_poll(ucompoll); 158 159 const struct cdevsw ucom_cdevsw = { 160 .d_open = ucomopen, 161 .d_close = ucomclose, 162 .d_read = ucomread, 163 .d_write = ucomwrite, 164 .d_ioctl = ucomioctl, 165 .d_stop = ucomstop, 166 .d_tty = ucomtty, 167 .d_poll = ucompoll, 168 .d_mmap = nommap, 169 .d_kqfilter = ttykqfilter, 170 .d_discard = nodiscard, 171 .d_flag = D_TTY 172 }; 173 174 static void ucom_cleanup(struct ucom_softc *); 175 static int ucomparam(struct tty *, struct termios *); 176 static int ucomhwiflow(struct tty *, int); 177 static void ucomstart(struct tty *); 178 static void ucom_shutdown(struct ucom_softc *); 179 static int ucom_do_ioctl(struct ucom_softc *, u_long, void *, 180 int, struct lwp *); 181 static void ucom_dtr(struct ucom_softc *, int); 182 static void ucom_rts(struct ucom_softc *, int); 183 static void ucom_break(struct ucom_softc *, int); 184 static void tiocm_to_ucom(struct ucom_softc *, u_long, int); 185 static int ucom_to_tiocm(struct ucom_softc *); 186 187 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); 188 static void ucom_submit_write(struct ucom_softc *, struct ucom_buffer *); 189 static void ucom_write_status(struct ucom_softc *, struct ucom_buffer *, 190 usbd_status); 191 192 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); 193 static void ucom_read_complete(struct ucom_softc *); 194 static usbd_status ucomsubmitread(struct ucom_softc *, struct ucom_buffer *); 195 static void ucom_softintr(void *); 196 197 int ucom_match(device_t, cfdata_t, void *); 198 void ucom_attach(device_t, device_t, void *); 199 int ucom_detach(device_t, int); 200 int ucom_activate(device_t, enum devact); 201 extern struct cfdriver ucom_cd; 202 CFATTACH_DECL_NEW(ucom, sizeof(struct ucom_softc), ucom_match, ucom_attach, 203 ucom_detach, ucom_activate); 204 205 int 206 ucom_match(device_t parent, cfdata_t match, void *aux) 207 { 208 return (1); 209 } 210 211 void 212 ucom_attach(device_t parent, device_t self, void *aux) 213 { 214 struct ucom_softc *sc = device_private(self); 215 struct ucom_attach_args *uca = aux; 216 struct tty *tp; 217 218 if (uca->info != NULL) 219 aprint_normal(": %s", uca->info); 220 aprint_normal("\n"); 221 222 prop_dictionary_set_int32(device_properties(self), "port", uca->portno); 223 224 sc->sc_dev = self; 225 sc->sc_udev = uca->device; 226 sc->sc_iface = uca->iface; 227 sc->sc_bulkout_no = uca->bulkout; 228 sc->sc_bulkin_no = uca->bulkin; 229 sc->sc_ibufsize = uca->ibufsize; 230 sc->sc_ibufsizepad = uca->ibufsizepad; 231 sc->sc_obufsize = uca->obufsize; 232 sc->sc_opkthdrlen = uca->opkthdrlen; 233 sc->sc_methods = uca->methods; 234 sc->sc_parent = uca->arg; 235 sc->sc_portno = uca->portno; 236 237 sc->sc_lsr = 0; 238 sc->sc_msr = 0; 239 sc->sc_mcr = 0; 240 sc->sc_tx_stopped = 0; 241 sc->sc_swflags = 0; 242 sc->sc_opening = 0; 243 sc->sc_refcnt = 0; 244 sc->sc_dying = 0; 245 246 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc); 247 248 tp = tty_alloc(); 249 tp->t_oproc = ucomstart; 250 tp->t_param = ucomparam; 251 tp->t_hwiflow = ucomhwiflow; 252 sc->sc_tty = tp; 253 254 DPRINTF(("ucom_attach: tty_attach %p\n", tp)); 255 tty_attach(tp); 256 257 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 258 RND_TYPE_TTY, RND_FLAG_DEFAULT); 259 260 if (!pmf_device_register(self, NULL, NULL)) 261 aprint_error_dev(self, "couldn't establish power handler\n"); 262 return; 263 } 264 265 int 266 ucom_detach(device_t self, int flags) 267 { 268 struct ucom_softc *sc = device_private(self); 269 struct tty *tp = sc->sc_tty; 270 int maj, mn; 271 int s, i; 272 273 DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n", 274 sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no)); 275 276 sc->sc_dying = 1; 277 pmf_device_deregister(self); 278 279 if (sc->sc_bulkin_pipe != NULL) 280 usbd_abort_pipe(sc->sc_bulkin_pipe); 281 if (sc->sc_bulkout_pipe != NULL) 282 usbd_abort_pipe(sc->sc_bulkout_pipe); 283 284 s = splusb(); 285 if (--sc->sc_refcnt >= 0) { 286 /* Wake up anyone waiting */ 287 if (tp != NULL) { 288 mutex_spin_enter(&tty_lock); 289 CLR(tp->t_state, TS_CARR_ON); 290 CLR(tp->t_cflag, CLOCAL | MDMBUF); 291 ttyflush(tp, FREAD|FWRITE); 292 mutex_spin_exit(&tty_lock); 293 } 294 /* Wait for processes to go away. */ 295 usb_detach_waitold(sc->sc_dev); 296 } 297 298 softint_disestablish(sc->sc_si); 299 splx(s); 300 301 /* locate the major number */ 302 maj = cdevsw_lookup_major(&ucom_cdevsw); 303 304 /* Nuke the vnodes for any open instances. */ 305 mn = device_unit(self); 306 DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn)); 307 vdevgone(maj, mn, mn, VCHR); 308 vdevgone(maj, mn | UCOMDIALOUT_MASK, mn | UCOMDIALOUT_MASK, VCHR); 309 vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR); 310 311 /* Detach and free the tty. */ 312 if (tp != NULL) { 313 tty_detach(tp); 314 tty_free(tp); 315 sc->sc_tty = NULL; 316 } 317 318 for (i = 0; i < UCOM_IN_BUFFS; i++) { 319 if (sc->sc_ibuff[i].ub_xfer != NULL) 320 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 321 } 322 323 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 324 if (sc->sc_obuff[i].ub_xfer != NULL) 325 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 326 } 327 328 /* Detach the random source */ 329 rnd_detach_source(&sc->sc_rndsource); 330 331 return (0); 332 } 333 334 int 335 ucom_activate(device_t self, enum devact act) 336 { 337 struct ucom_softc *sc = device_private(self); 338 339 DPRINTFN(5,("ucom_activate: %d\n", act)); 340 341 switch (act) { 342 case DVACT_DEACTIVATE: 343 sc->sc_dying = 1; 344 return 0; 345 default: 346 return EOPNOTSUPP; 347 } 348 } 349 350 void 351 ucom_shutdown(struct ucom_softc *sc) 352 { 353 struct tty *tp = sc->sc_tty; 354 355 DPRINTF(("ucom_shutdown\n")); 356 /* 357 * Hang up if necessary. Wait a bit, so the other side has time to 358 * notice even if we immediately open the port again. 359 */ 360 if (ISSET(tp->t_cflag, HUPCL)) { 361 ucom_dtr(sc, 0); 362 (void)tsleep(sc, TTIPRI, ttclos, hz); 363 } 364 } 365 366 int 367 ucomopen(dev_t dev, int flag, int mode, struct lwp *l) 368 { 369 int unit = UCOMUNIT(dev); 370 usbd_status err; 371 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit); 372 struct ucom_buffer *ub; 373 struct tty *tp; 374 int s, i; 375 int error; 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 /* Clear PPS capture state on first open. */ 427 mutex_spin_enter(&timecounter_lock); 428 memset(&sc->sc_pps_state, 0, sizeof(sc->sc_pps_state)); 429 sc->sc_pps_state.ppscap = PPS_CAPTUREASSERT | PPS_CAPTURECLEAR; 430 pps_init(&sc->sc_pps_state); 431 mutex_spin_exit(&timecounter_lock); 432 433 /* 434 * Initialize the termios status to the defaults. Add in the 435 * sticky bits from TIOCSFLAGS. 436 */ 437 t.c_ispeed = 0; 438 t.c_ospeed = TTYDEF_SPEED; 439 t.c_cflag = TTYDEF_CFLAG; 440 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 441 SET(t.c_cflag, CLOCAL); 442 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 443 SET(t.c_cflag, CRTSCTS); 444 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 445 SET(t.c_cflag, MDMBUF); 446 /* Make sure ucomparam() will do something. */ 447 tp->t_ospeed = 0; 448 (void) ucomparam(tp, &t); 449 tp->t_iflag = TTYDEF_IFLAG; 450 tp->t_oflag = TTYDEF_OFLAG; 451 tp->t_lflag = TTYDEF_LFLAG; 452 ttychars(tp); 453 ttsetwater(tp); 454 455 /* 456 * Turn on DTR. We must always do this, even if carrier is not 457 * present, because otherwise we'd have to use TIOCSDTR 458 * immediately after setting CLOCAL, which applications do not 459 * expect. We always assert DTR while the device is open 460 * unless explicitly requested to deassert it. Ditto RTS. 461 */ 462 ucom_dtr(sc, 1); 463 ucom_rts(sc, 1); 464 465 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 466 sc->sc_bulkin_no, sc->sc_bulkout_no)); 467 468 /* Open the bulk pipes */ 469 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 470 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 471 if (err) { 472 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 473 device_xname(sc->sc_dev), sc->sc_bulkin_no, 474 usbd_errstr(err))); 475 error = EIO; 476 goto fail_0; 477 } 478 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 479 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 480 if (err) { 481 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 482 device_xname(sc->sc_dev), sc->sc_bulkout_no, 483 usbd_errstr(err))); 484 error = EIO; 485 goto fail_1; 486 } 487 488 sc->sc_rx_unblock = 0; 489 sc->sc_rx_stopped = 0; 490 sc->sc_tx_stopped = 0; 491 492 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 493 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 494 495 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 496 SIMPLEQ_INIT(&sc->sc_ibuff_full); 497 SIMPLEQ_INIT(&sc->sc_obuff_free); 498 SIMPLEQ_INIT(&sc->sc_obuff_full); 499 500 /* Allocate input buffers */ 501 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 502 ub++) { 503 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 504 if (ub->ub_xfer == NULL) { 505 error = ENOMEM; 506 goto fail_2; 507 } 508 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 509 sc->sc_ibufsizepad); 510 if (ub->ub_data == NULL) { 511 error = ENOMEM; 512 goto fail_2; 513 } 514 515 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 516 error = EIO; 517 goto fail_2; 518 } 519 } 520 521 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 522 ub++) { 523 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 524 if (ub->ub_xfer == NULL) { 525 error = ENOMEM; 526 goto fail_2; 527 } 528 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 529 sc->sc_obufsize); 530 if (ub->ub_data == NULL) { 531 error = ENOMEM; 532 goto fail_2; 533 } 534 535 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 536 } 537 538 } 539 sc->sc_opening = 0; 540 wakeup(&sc->sc_opening); 541 splx(s); 542 543 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 544 if (error) 545 goto bad; 546 547 error = (*tp->t_linesw->l_open)(dev, tp); 548 if (error) 549 goto bad; 550 551 return (0); 552 553 fail_2: 554 usbd_abort_pipe(sc->sc_bulkin_pipe); 555 for (i = 0; i < UCOM_IN_BUFFS; i++) { 556 if (sc->sc_ibuff[i].ub_xfer != NULL) { 557 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 558 sc->sc_ibuff[i].ub_xfer = NULL; 559 sc->sc_ibuff[i].ub_data = NULL; 560 } 561 } 562 usbd_abort_pipe(sc->sc_bulkout_pipe); 563 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 564 if (sc->sc_obuff[i].ub_xfer != NULL) { 565 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 566 sc->sc_obuff[i].ub_xfer = NULL; 567 sc->sc_obuff[i].ub_data = NULL; 568 } 569 } 570 571 usbd_close_pipe(sc->sc_bulkout_pipe); 572 sc->sc_bulkout_pipe = NULL; 573 fail_1: 574 usbd_close_pipe(sc->sc_bulkin_pipe); 575 sc->sc_bulkin_pipe = NULL; 576 fail_0: 577 sc->sc_opening = 0; 578 wakeup(&sc->sc_opening); 579 splx(s); 580 return (error); 581 582 bad: 583 s = spltty(); 584 CLR(tp->t_state, TS_BUSY); 585 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 586 /* 587 * We failed to open the device, and nobody else had it opened. 588 * Clean up the state as appropriate. 589 */ 590 ucom_cleanup(sc); 591 } 592 splx(s); 593 594 return (error); 595 } 596 597 int 598 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 599 { 600 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 601 struct tty *tp; 602 int s; 603 604 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 605 606 if (sc == NULL) 607 return 0; 608 609 tp = sc->sc_tty; 610 611 if (!ISSET(tp->t_state, TS_ISOPEN)) 612 return (0); 613 614 s = spltty(); 615 sc->sc_refcnt++; 616 617 (*tp->t_linesw->l_close)(tp, flag); 618 ttyclose(tp); 619 620 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 621 /* 622 * Although we got a last close, the device may still be in 623 * use; e.g. if this was the dialout node, and there are still 624 * processes waiting for carrier on the non-dialout node. 625 */ 626 ucom_cleanup(sc); 627 } 628 629 if (sc->sc_methods->ucom_close != NULL) 630 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno); 631 632 if (--sc->sc_refcnt < 0) 633 usb_detach_wakeupold(sc->sc_dev); 634 splx(s); 635 636 return (0); 637 } 638 639 int 640 ucomread(dev_t dev, struct uio *uio, int flag) 641 { 642 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 643 struct tty *tp; 644 int error; 645 646 if (sc == NULL || sc->sc_dying) 647 return (EIO); 648 649 tp = sc->sc_tty; 650 651 sc->sc_refcnt++; 652 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 653 if (--sc->sc_refcnt < 0) 654 usb_detach_wakeupold(sc->sc_dev); 655 return (error); 656 } 657 658 int 659 ucomwrite(dev_t dev, struct uio *uio, int flag) 660 { 661 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 662 struct tty *tp; 663 int error; 664 665 if (sc == NULL || sc->sc_dying) 666 return (EIO); 667 668 tp = sc->sc_tty; 669 670 sc->sc_refcnt++; 671 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 672 if (--sc->sc_refcnt < 0) 673 usb_detach_wakeupold(sc->sc_dev); 674 return (error); 675 } 676 677 int 678 ucompoll(dev_t dev, int events, struct lwp *l) 679 { 680 struct ucom_softc *sc; 681 struct tty *tp; 682 int revents; 683 684 sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 685 if (sc == NULL || sc->sc_dying) 686 return (POLLHUP); 687 688 tp = sc->sc_tty; 689 690 sc->sc_refcnt++; 691 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 692 if (--sc->sc_refcnt < 0) 693 usb_detach_wakeupold(sc->sc_dev); 694 return (revents); 695 } 696 697 struct tty * 698 ucomtty(dev_t dev) 699 { 700 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 701 702 return ((sc != NULL) ? sc->sc_tty : NULL); 703 } 704 705 int 706 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 707 { 708 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 709 int error; 710 711 if (sc == NULL || sc->sc_dying) 712 return (EIO); 713 714 sc->sc_refcnt++; 715 error = ucom_do_ioctl(sc, cmd, data, flag, l); 716 if (--sc->sc_refcnt < 0) 717 usb_detach_wakeupold(sc->sc_dev); 718 return (error); 719 } 720 721 static int 722 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 723 int flag, struct lwp *l) 724 { 725 struct tty *tp = sc->sc_tty; 726 int error; 727 int s; 728 729 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 730 731 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 732 if (error != EPASSTHROUGH) 733 return (error); 734 735 error = ttioctl(tp, cmd, data, flag, l); 736 if (error != EPASSTHROUGH) 737 return (error); 738 739 if (sc->sc_methods->ucom_ioctl != NULL) { 740 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 741 sc->sc_portno, cmd, data, flag, l->l_proc); 742 if (error != EPASSTHROUGH) 743 return (error); 744 } 745 746 error = 0; 747 748 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 749 s = spltty(); 750 751 switch (cmd) { 752 case TIOCSBRK: 753 ucom_break(sc, 1); 754 break; 755 756 case TIOCCBRK: 757 ucom_break(sc, 0); 758 break; 759 760 case TIOCSDTR: 761 ucom_dtr(sc, 1); 762 break; 763 764 case TIOCCDTR: 765 ucom_dtr(sc, 0); 766 break; 767 768 case TIOCGFLAGS: 769 *(int *)data = sc->sc_swflags; 770 break; 771 772 case TIOCSFLAGS: 773 error = kauth_authorize_device_tty(l->l_cred, 774 KAUTH_DEVICE_TTY_PRIVSET, tp); 775 if (error) 776 break; 777 sc->sc_swflags = *(int *)data; 778 break; 779 780 case TIOCMSET: 781 case TIOCMBIS: 782 case TIOCMBIC: 783 tiocm_to_ucom(sc, cmd, *(int *)data); 784 break; 785 786 case TIOCMGET: 787 *(int *)data = ucom_to_tiocm(sc); 788 break; 789 790 case PPS_IOC_CREATE: 791 case PPS_IOC_DESTROY: 792 case PPS_IOC_GETPARAMS: 793 case PPS_IOC_SETPARAMS: 794 case PPS_IOC_GETCAP: 795 case PPS_IOC_FETCH: 796 #ifdef PPS_SYNC 797 case PPS_IOC_KCBIND: 798 #endif 799 mutex_spin_enter(&timecounter_lock); 800 error = pps_ioctl(cmd, data, &sc->sc_pps_state); 801 mutex_spin_exit(&timecounter_lock); 802 break; 803 804 default: 805 error = EPASSTHROUGH; 806 break; 807 } 808 809 splx(s); 810 811 return (error); 812 } 813 814 static void 815 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 816 { 817 u_char combits; 818 819 combits = 0; 820 if (ISSET(ttybits, TIOCM_DTR)) 821 SET(combits, UMCR_DTR); 822 if (ISSET(ttybits, TIOCM_RTS)) 823 SET(combits, UMCR_RTS); 824 825 switch (how) { 826 case TIOCMBIC: 827 CLR(sc->sc_mcr, combits); 828 break; 829 830 case TIOCMBIS: 831 SET(sc->sc_mcr, combits); 832 break; 833 834 case TIOCMSET: 835 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 836 SET(sc->sc_mcr, combits); 837 break; 838 } 839 840 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 841 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 842 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 843 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 844 } 845 846 static int 847 ucom_to_tiocm(struct ucom_softc *sc) 848 { 849 u_char combits; 850 int ttybits = 0; 851 852 combits = sc->sc_mcr; 853 if (ISSET(combits, UMCR_DTR)) 854 SET(ttybits, TIOCM_DTR); 855 if (ISSET(combits, UMCR_RTS)) 856 SET(ttybits, TIOCM_RTS); 857 858 combits = sc->sc_msr; 859 if (ISSET(combits, UMSR_DCD)) 860 SET(ttybits, TIOCM_CD); 861 if (ISSET(combits, UMSR_CTS)) 862 SET(ttybits, TIOCM_CTS); 863 if (ISSET(combits, UMSR_DSR)) 864 SET(ttybits, TIOCM_DSR); 865 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 866 SET(ttybits, TIOCM_RI); 867 868 #if 0 869 XXX; 870 if (sc->sc_ier != 0) 871 SET(ttybits, TIOCM_LE); 872 #endif 873 874 return (ttybits); 875 } 876 877 static void 878 ucom_break(struct ucom_softc *sc, int onoff) 879 { 880 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 881 882 if (sc->sc_methods->ucom_set != NULL) 883 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 884 UCOM_SET_BREAK, onoff); 885 } 886 887 static void 888 ucom_dtr(struct ucom_softc *sc, int onoff) 889 { 890 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 891 892 if (sc->sc_methods->ucom_set != NULL) 893 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 894 UCOM_SET_DTR, onoff); 895 } 896 897 static void 898 ucom_rts(struct ucom_softc *sc, int onoff) 899 { 900 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 901 902 if (sc->sc_methods->ucom_set != NULL) 903 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 904 UCOM_SET_RTS, onoff); 905 } 906 907 void 908 ucom_status_change(struct ucom_softc *sc) 909 { 910 struct tty *tp = sc->sc_tty; 911 u_char old_msr; 912 913 if (sc->sc_methods->ucom_get_status != NULL) { 914 old_msr = sc->sc_msr; 915 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 916 &sc->sc_lsr, &sc->sc_msr); 917 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) { 918 mutex_spin_enter(&timecounter_lock); 919 pps_capture(&sc->sc_pps_state); 920 pps_event(&sc->sc_pps_state, 921 (sc->sc_msr & UMSR_DCD) ? 922 PPS_CAPTUREASSERT : 923 PPS_CAPTURECLEAR); 924 mutex_spin_exit(&timecounter_lock); 925 926 (*tp->t_linesw->l_modem)(tp, 927 ISSET(sc->sc_msr, UMSR_DCD)); 928 } 929 } else { 930 sc->sc_lsr = 0; 931 /* Assume DCD is present, if we have no chance to check it. */ 932 sc->sc_msr = UMSR_DCD; 933 } 934 } 935 936 static int 937 ucomparam(struct tty *tp, struct termios *t) 938 { 939 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 940 UCOMUNIT(tp->t_dev)); 941 int error; 942 943 if (sc == NULL || sc->sc_dying) 944 return (EIO); 945 946 /* Check requested parameters. */ 947 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 948 return (EINVAL); 949 950 /* 951 * For the console, always force CLOCAL and !HUPCL, so that the port 952 * is always active. 953 */ 954 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 955 SET(t->c_cflag, CLOCAL); 956 CLR(t->c_cflag, HUPCL); 957 } 958 959 /* 960 * If there were no changes, don't do anything. This avoids dropping 961 * input and improves performance when all we did was frob things like 962 * VMIN and VTIME. 963 */ 964 if (tp->t_ospeed == t->c_ospeed && 965 tp->t_cflag == t->c_cflag) 966 return (0); 967 968 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 969 970 /* And copy to tty. */ 971 tp->t_ispeed = 0; 972 tp->t_ospeed = t->c_ospeed; 973 tp->t_cflag = t->c_cflag; 974 975 if (sc->sc_methods->ucom_param != NULL) { 976 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 977 t); 978 if (error) 979 return (error); 980 } 981 982 /* XXX worry about CHWFLOW */ 983 984 /* 985 * Update the tty layer's idea of the carrier bit, in case we changed 986 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 987 * explicit request. 988 */ 989 DPRINTF(("ucomparam: l_modem\n")); 990 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 991 992 #if 0 993 XXX what if the hardware is not open 994 if (!ISSET(t->c_cflag, CHWFLOW)) { 995 if (sc->sc_tx_stopped) { 996 sc->sc_tx_stopped = 0; 997 ucomstart(tp); 998 } 999 } 1000 #endif 1001 1002 return (0); 1003 } 1004 1005 static int 1006 ucomhwiflow(struct tty *tp, int block) 1007 { 1008 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 1009 UCOMUNIT(tp->t_dev)); 1010 int old; 1011 1012 if (sc == NULL) 1013 return (0); 1014 1015 old = sc->sc_rx_stopped; 1016 sc->sc_rx_stopped = (u_char)block; 1017 1018 if (old && !block) { 1019 int s = splusb(); 1020 sc->sc_rx_unblock = 1; 1021 softint_schedule(sc->sc_si); 1022 splx(s); 1023 } 1024 1025 return (1); 1026 } 1027 1028 static void 1029 ucomstart(struct tty *tp) 1030 { 1031 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 1032 UCOMUNIT(tp->t_dev)); 1033 struct ucom_buffer *ub; 1034 int s; 1035 u_char *data; 1036 int cnt; 1037 1038 if (sc == NULL || sc->sc_dying) 1039 return; 1040 1041 s = spltty(); 1042 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1043 goto out; 1044 if (sc->sc_tx_stopped) 1045 goto out; 1046 1047 if (!ttypull(tp)) 1048 goto out; 1049 1050 /* Grab the first contiguous region of buffer space. */ 1051 data = tp->t_outq.c_cf; 1052 cnt = ndqb(&tp->t_outq, 0); 1053 1054 if (cnt == 0) 1055 goto out; 1056 1057 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1058 if (ub == NULL) { 1059 SET(tp->t_state, TS_BUSY); 1060 goto out; 1061 } 1062 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1063 1064 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1065 SET(tp->t_state, TS_BUSY); 1066 1067 if (cnt > sc->sc_obufsize) 1068 cnt = sc->sc_obufsize; 1069 1070 if (sc->sc_methods->ucom_write != NULL) 1071 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1072 ub->ub_data, data, &cnt); 1073 else 1074 memcpy(ub->ub_data, data, cnt); 1075 1076 ub->ub_len = cnt; 1077 ub->ub_index = 0; 1078 1079 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1080 1081 softint_schedule(sc->sc_si); 1082 1083 out: 1084 splx(s); 1085 } 1086 1087 void 1088 ucomstop(struct tty *tp, int flag) 1089 { 1090 #if 0 1091 /*struct ucom_softc *sc = 1092 device_lookup_private(&ucom_cd, UCOMUNIT(tp->t_dev));*/ 1093 int s; 1094 1095 s = spltty(); 1096 if (ISSET(tp->t_state, TS_BUSY)) { 1097 /* sc->sc_tx_stopped = 1; */ 1098 if (!ISSET(tp->t_state, TS_TTSTOP)) 1099 SET(tp->t_state, TS_FLUSH); 1100 } 1101 splx(s); 1102 #endif 1103 } 1104 1105 static void 1106 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1107 usbd_status err) 1108 { 1109 struct tty *tp = sc->sc_tty; 1110 uint32_t cc = ub->ub_len; 1111 1112 switch (err) { 1113 case USBD_IN_PROGRESS: 1114 ub->ub_index = ub->ub_len; 1115 break; 1116 case USBD_STALLED: 1117 ub->ub_index = 0; 1118 softint_schedule(sc->sc_si); 1119 break; 1120 case USBD_NORMAL_COMPLETION: 1121 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1122 rnd_add_uint32(&sc->sc_rndsource, cc); 1123 /*FALLTHROUGH*/ 1124 default: 1125 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1126 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1127 cc -= sc->sc_opkthdrlen; 1128 1129 mutex_spin_enter(&tty_lock); 1130 CLR(tp->t_state, TS_BUSY); 1131 if (ISSET(tp->t_state, TS_FLUSH)) 1132 CLR(tp->t_state, TS_FLUSH); 1133 else 1134 ndflush(&tp->t_outq, cc); 1135 mutex_spin_exit(&tty_lock); 1136 1137 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1138 !sc->sc_dying) { 1139 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1140 ucom_submit_write(sc, ub); 1141 1142 (*tp->t_linesw->l_start)(tp); 1143 } 1144 break; 1145 } 1146 } 1147 1148 /* Call at spltty() */ 1149 static void 1150 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1151 { 1152 1153 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1154 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1155 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1156 1157 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1158 } 1159 1160 static void 1161 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1162 { 1163 struct ucom_softc *sc = (struct ucom_softc *)p; 1164 int s; 1165 1166 s = spltty(); 1167 1168 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1169 1170 splx(s); 1171 } 1172 1173 static void 1174 ucom_softintr(void *arg) 1175 { 1176 struct ucom_softc *sc = arg; 1177 struct tty *tp = sc->sc_tty; 1178 struct ucom_buffer *ub; 1179 int s; 1180 1181 if (!ISSET(tp->t_state, TS_ISOPEN)) 1182 return; 1183 1184 s = spltty(); 1185 1186 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1187 1188 if (ub != NULL && ub->ub_index == 0) 1189 ucom_submit_write(sc, ub); 1190 1191 if (sc->sc_rx_unblock) 1192 ucom_read_complete(sc); 1193 1194 splx(s); 1195 } 1196 1197 static void 1198 ucom_read_complete(struct ucom_softc *sc) 1199 { 1200 int (*rint)(int, struct tty *); 1201 struct ucom_buffer *ub; 1202 struct tty *tp; 1203 int s; 1204 1205 tp = sc->sc_tty; 1206 rint = tp->t_linesw->l_rint; 1207 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1208 1209 while (ub != NULL && !sc->sc_rx_stopped) { 1210 1211 s = spltty(); 1212 1213 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1214 /* Give characters to tty layer. */ 1215 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1216 /* Overflow: drop remainder */ 1217 ub->ub_index = ub->ub_len; 1218 } else 1219 ub->ub_index++; 1220 } 1221 1222 splx(s); 1223 1224 if (ub->ub_index == ub->ub_len) { 1225 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1226 1227 ucomsubmitread(sc, ub); 1228 1229 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1230 } 1231 } 1232 1233 sc->sc_rx_unblock = (ub != NULL); 1234 } 1235 1236 static usbd_status 1237 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1238 { 1239 usbd_status err; 1240 1241 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1242 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1243 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1244 1245 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1246 /* XXX: Recover from this, please! */ 1247 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1248 return (err); 1249 } 1250 1251 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1252 1253 return (USBD_NORMAL_COMPLETION); 1254 } 1255 1256 static void 1257 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1258 { 1259 struct ucom_softc *sc = (struct ucom_softc *)p; 1260 struct tty *tp = sc->sc_tty; 1261 struct ucom_buffer *ub; 1262 u_int32_t cc; 1263 u_char *cp; 1264 int s; 1265 1266 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1267 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1268 1269 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1270 sc->sc_dying) { 1271 DPRINTF(("ucomreadcb: dying\n")); 1272 ub->ub_index = ub->ub_len = 0; 1273 /* Send something to wake upper layer */ 1274 s = spltty(); 1275 if (status != USBD_CANCELLED) { 1276 (tp->t_linesw->l_rint)('\n', tp); 1277 mutex_spin_enter(&tty_lock); /* XXX */ 1278 ttwakeup(tp); 1279 mutex_spin_exit(&tty_lock); /* XXX */ 1280 } 1281 splx(s); 1282 return; 1283 } 1284 1285 if (status == USBD_STALLED) { 1286 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1287 ucomsubmitread(sc, ub); 1288 return; 1289 } 1290 1291 if (status != USBD_NORMAL_COMPLETION) { 1292 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1293 return; 1294 } 1295 1296 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1297 1298 #ifdef UCOM_DEBUG 1299 /* This is triggered by uslsa(4) occasionally. */ 1300 if ((ucomdebug > 0) && (cc == 0)) { 1301 device_printf(sc->sc_dev, "ucomreadcb: zero length xfer!\n"); 1302 } 1303 #endif 1304 1305 KDASSERT(cp == ub->ub_data); 1306 1307 rnd_add_uint32(&sc->sc_rndsource, cc); 1308 1309 if (sc->sc_opening) { 1310 ucomsubmitread(sc, ub); 1311 return; 1312 } 1313 1314 if (sc->sc_methods->ucom_read != NULL) { 1315 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1316 &cp, &cc); 1317 ub->ub_index = (u_int)(cp - ub->ub_data); 1318 } else 1319 ub->ub_index = 0; 1320 1321 ub->ub_len = cc; 1322 1323 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1324 1325 ucom_read_complete(sc); 1326 } 1327 1328 static void 1329 ucom_cleanup(struct ucom_softc *sc) 1330 { 1331 struct ucom_buffer *ub; 1332 1333 DPRINTF(("ucom_cleanup: closing pipes\n")); 1334 1335 ucom_shutdown(sc); 1336 if (sc->sc_bulkin_pipe != NULL) { 1337 usbd_abort_pipe(sc->sc_bulkin_pipe); 1338 usbd_close_pipe(sc->sc_bulkin_pipe); 1339 sc->sc_bulkin_pipe = NULL; 1340 } 1341 if (sc->sc_bulkout_pipe != NULL) { 1342 usbd_abort_pipe(sc->sc_bulkout_pipe); 1343 usbd_close_pipe(sc->sc_bulkout_pipe); 1344 sc->sc_bulkout_pipe = NULL; 1345 } 1346 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1347 if (ub->ub_xfer != NULL) { 1348 usbd_free_xfer(ub->ub_xfer); 1349 ub->ub_xfer = NULL; 1350 ub->ub_data = NULL; 1351 } 1352 } 1353 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){ 1354 if (ub->ub_xfer != NULL) { 1355 usbd_free_xfer(ub->ub_xfer); 1356 ub->ub_xfer = NULL; 1357 ub->ub_data = NULL; 1358 } 1359 } 1360 } 1361 1362 #endif /* NUCOM > 0 */ 1363 1364 int 1365 ucomprint(void *aux, const char *pnp) 1366 { 1367 struct ucom_attach_args *uca = aux; 1368 1369 if (pnp) 1370 aprint_normal("ucom at %s", pnp); 1371 if (uca->portno != UCOM_UNK_PORTNO) 1372 aprint_normal(" portno %d", uca->portno); 1373 return (UNCONF); 1374 } 1375 1376 int 1377 ucomsubmatch(device_t parent, cfdata_t cf, 1378 const int *ldesc, void *aux) 1379 { 1380 struct ucom_attach_args *uca = aux; 1381 1382 if (uca->portno != UCOM_UNK_PORTNO && 1383 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1384 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1385 return (0); 1386 return (config_match(parent, cf, aux)); 1387 } 1388