ucom.c revision 1.108.2.1
1 /* $NetBSD: ucom.c,v 1.108.2.1 2014/11/30 12:18:58 skrll 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 1.108.2.1 2014/11/30 12:18:58 skrll 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/rnd.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 sc->sc_dev = self; 223 sc->sc_udev = uca->device; 224 sc->sc_iface = uca->iface; 225 sc->sc_bulkout_no = uca->bulkout; 226 sc->sc_bulkin_no = uca->bulkin; 227 sc->sc_ibufsize = uca->ibufsize; 228 sc->sc_ibufsizepad = uca->ibufsizepad; 229 sc->sc_obufsize = uca->obufsize; 230 sc->sc_opkthdrlen = uca->opkthdrlen; 231 sc->sc_methods = uca->methods; 232 sc->sc_parent = uca->arg; 233 sc->sc_portno = uca->portno; 234 235 sc->sc_lsr = 0; 236 sc->sc_msr = 0; 237 sc->sc_mcr = 0; 238 sc->sc_tx_stopped = 0; 239 sc->sc_swflags = 0; 240 sc->sc_opening = 0; 241 sc->sc_refcnt = 0; 242 sc->sc_dying = 0; 243 244 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc); 245 246 tp = tty_alloc(); 247 tp->t_oproc = ucomstart; 248 tp->t_param = ucomparam; 249 tp->t_hwiflow = ucomhwiflow; 250 sc->sc_tty = tp; 251 252 DPRINTF(("ucom_attach: tty_attach %p\n", tp)); 253 tty_attach(tp); 254 255 rnd_attach_source(&sc->sc_rndsource, device_xname(sc->sc_dev), 256 RND_TYPE_TTY, RND_FLAG_DEFAULT); 257 258 if (!pmf_device_register(self, NULL, NULL)) 259 aprint_error_dev(self, "couldn't establish power handler\n"); 260 return; 261 } 262 263 int 264 ucom_detach(device_t self, int flags) 265 { 266 struct ucom_softc *sc = device_private(self); 267 struct tty *tp = sc->sc_tty; 268 int maj, mn; 269 int s, i; 270 271 DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n", 272 sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no)); 273 274 sc->sc_dying = 1; 275 pmf_device_deregister(self); 276 277 if (sc->sc_bulkin_pipe != NULL) 278 usbd_abort_pipe(sc->sc_bulkin_pipe); 279 if (sc->sc_bulkout_pipe != NULL) 280 usbd_abort_pipe(sc->sc_bulkout_pipe); 281 282 s = splusb(); 283 if (--sc->sc_refcnt >= 0) { 284 /* Wake up anyone waiting */ 285 if (tp != NULL) { 286 mutex_spin_enter(&tty_lock); 287 CLR(tp->t_state, TS_CARR_ON); 288 CLR(tp->t_cflag, CLOCAL | MDMBUF); 289 ttyflush(tp, FREAD|FWRITE); 290 mutex_spin_exit(&tty_lock); 291 } 292 /* Wait for processes to go away. */ 293 usb_detach_waitold(sc->sc_dev); 294 } 295 296 softint_disestablish(sc->sc_si); 297 splx(s); 298 299 /* locate the major number */ 300 maj = cdevsw_lookup_major(&ucom_cdevsw); 301 302 /* Nuke the vnodes for any open instances. */ 303 mn = device_unit(self); 304 DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn)); 305 vdevgone(maj, mn, mn, VCHR); 306 vdevgone(maj, mn | UCOMDIALOUT_MASK, mn | UCOMDIALOUT_MASK, VCHR); 307 vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR); 308 309 /* Detach and free the tty. */ 310 if (tp != NULL) { 311 tty_detach(tp); 312 tty_free(tp); 313 sc->sc_tty = NULL; 314 } 315 316 for (i = 0; i < UCOM_IN_BUFFS; i++) { 317 if (sc->sc_ibuff[i].ub_xfer != NULL) 318 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 319 } 320 321 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 322 if (sc->sc_obuff[i].ub_xfer != NULL) 323 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 324 } 325 326 /* Detach the random source */ 327 rnd_detach_source(&sc->sc_rndsource); 328 329 return (0); 330 } 331 332 int 333 ucom_activate(device_t self, enum devact act) 334 { 335 struct ucom_softc *sc = device_private(self); 336 337 DPRINTFN(5,("ucom_activate: %d\n", act)); 338 339 switch (act) { 340 case DVACT_DEACTIVATE: 341 sc->sc_dying = 1; 342 return 0; 343 default: 344 return EOPNOTSUPP; 345 } 346 } 347 348 void 349 ucom_shutdown(struct ucom_softc *sc) 350 { 351 struct tty *tp = sc->sc_tty; 352 353 DPRINTF(("ucom_shutdown\n")); 354 /* 355 * Hang up if necessary. Wait a bit, so the other side has time to 356 * notice even if we immediately open the port again. 357 */ 358 if (ISSET(tp->t_cflag, HUPCL)) { 359 ucom_dtr(sc, 0); 360 (void)tsleep(sc, TTIPRI, ttclos, hz); 361 } 362 } 363 364 int 365 ucomopen(dev_t dev, int flag, int mode, struct lwp *l) 366 { 367 int unit = UCOMUNIT(dev); 368 usbd_status err; 369 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit); 370 struct ucom_buffer *ub; 371 struct tty *tp; 372 int s, i; 373 int error; 374 375 if (sc == NULL) 376 return (ENXIO); 377 378 if (sc->sc_dying) 379 return (EIO); 380 381 if (!device_is_active(sc->sc_dev)) 382 return (ENXIO); 383 384 tp = sc->sc_tty; 385 386 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp)); 387 388 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 389 return (EBUSY); 390 391 s = spltty(); 392 393 /* 394 * Do the following iff this is a first open. 395 */ 396 while (sc->sc_opening) 397 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0); 398 399 if (sc->sc_dying) { 400 splx(s); 401 return (EIO); 402 } 403 sc->sc_opening = 1; 404 405 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 406 struct termios t; 407 408 tp->t_dev = dev; 409 410 if (sc->sc_methods->ucom_open != NULL) { 411 error = sc->sc_methods->ucom_open(sc->sc_parent, 412 sc->sc_portno); 413 if (error) { 414 ucom_cleanup(sc); 415 sc->sc_opening = 0; 416 wakeup(&sc->sc_opening); 417 splx(s); 418 return (error); 419 } 420 } 421 422 ucom_status_change(sc); 423 424 /* Clear PPS capture state on first open. */ 425 mutex_spin_enter(&timecounter_lock); 426 memset(&sc->sc_pps_state, 0, sizeof(sc->sc_pps_state)); 427 sc->sc_pps_state.ppscap = PPS_CAPTUREASSERT | PPS_CAPTURECLEAR; 428 pps_init(&sc->sc_pps_state); 429 mutex_spin_exit(&timecounter_lock); 430 431 /* 432 * Initialize the termios status to the defaults. Add in the 433 * sticky bits from TIOCSFLAGS. 434 */ 435 t.c_ispeed = 0; 436 t.c_ospeed = TTYDEF_SPEED; 437 t.c_cflag = TTYDEF_CFLAG; 438 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 439 SET(t.c_cflag, CLOCAL); 440 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 441 SET(t.c_cflag, CRTSCTS); 442 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 443 SET(t.c_cflag, MDMBUF); 444 /* Make sure ucomparam() will do something. */ 445 tp->t_ospeed = 0; 446 (void) ucomparam(tp, &t); 447 tp->t_iflag = TTYDEF_IFLAG; 448 tp->t_oflag = TTYDEF_OFLAG; 449 tp->t_lflag = TTYDEF_LFLAG; 450 ttychars(tp); 451 ttsetwater(tp); 452 453 /* 454 * Turn on DTR. We must always do this, even if carrier is not 455 * present, because otherwise we'd have to use TIOCSDTR 456 * immediately after setting CLOCAL, which applications do not 457 * expect. We always assert DTR while the device is open 458 * unless explicitly requested to deassert it. Ditto RTS. 459 */ 460 ucom_dtr(sc, 1); 461 ucom_rts(sc, 1); 462 463 DPRINTF(("ucomopen: open pipes in=%d out=%d\n", 464 sc->sc_bulkin_no, sc->sc_bulkout_no)); 465 466 /* Open the bulk pipes */ 467 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 468 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe); 469 if (err) { 470 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n", 471 device_xname(sc->sc_dev), sc->sc_bulkin_no, 472 usbd_errstr(err))); 473 error = EIO; 474 goto fail_0; 475 } 476 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, 477 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); 478 if (err) { 479 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n", 480 device_xname(sc->sc_dev), sc->sc_bulkout_no, 481 usbd_errstr(err))); 482 error = EIO; 483 goto fail_1; 484 } 485 486 sc->sc_rx_unblock = 0; 487 sc->sc_rx_stopped = 0; 488 sc->sc_tx_stopped = 0; 489 490 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff)); 491 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff)); 492 493 SIMPLEQ_INIT(&sc->sc_ibuff_empty); 494 SIMPLEQ_INIT(&sc->sc_ibuff_full); 495 SIMPLEQ_INIT(&sc->sc_obuff_free); 496 SIMPLEQ_INIT(&sc->sc_obuff_full); 497 498 /* Allocate input buffers */ 499 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; 500 ub++) { 501 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 502 if (ub->ub_xfer == NULL) { 503 error = ENOMEM; 504 goto fail_2; 505 } 506 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 507 sc->sc_ibufsizepad); 508 if (ub->ub_data == NULL) { 509 error = ENOMEM; 510 goto fail_2; 511 } 512 513 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) { 514 error = EIO; 515 goto fail_2; 516 } 517 } 518 519 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; 520 ub++) { 521 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev); 522 if (ub->ub_xfer == NULL) { 523 error = ENOMEM; 524 goto fail_2; 525 } 526 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer, 527 sc->sc_obufsize); 528 if (ub->ub_data == NULL) { 529 error = ENOMEM; 530 goto fail_2; 531 } 532 533 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 534 } 535 536 } 537 sc->sc_opening = 0; 538 wakeup(&sc->sc_opening); 539 splx(s); 540 541 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 542 if (error) 543 goto bad; 544 545 error = (*tp->t_linesw->l_open)(dev, tp); 546 if (error) 547 goto bad; 548 549 return (0); 550 551 fail_2: 552 usbd_abort_pipe(sc->sc_bulkin_pipe); 553 for (i = 0; i < UCOM_IN_BUFFS; i++) { 554 if (sc->sc_ibuff[i].ub_xfer != NULL) { 555 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer); 556 sc->sc_ibuff[i].ub_xfer = NULL; 557 sc->sc_ibuff[i].ub_data = NULL; 558 } 559 } 560 usbd_abort_pipe(sc->sc_bulkout_pipe); 561 for (i = 0; i < UCOM_OUT_BUFFS; i++) { 562 if (sc->sc_obuff[i].ub_xfer != NULL) { 563 usbd_free_xfer(sc->sc_obuff[i].ub_xfer); 564 sc->sc_obuff[i].ub_xfer = NULL; 565 sc->sc_obuff[i].ub_data = NULL; 566 } 567 } 568 569 usbd_close_pipe(sc->sc_bulkout_pipe); 570 sc->sc_bulkout_pipe = NULL; 571 fail_1: 572 usbd_close_pipe(sc->sc_bulkin_pipe); 573 sc->sc_bulkin_pipe = NULL; 574 fail_0: 575 sc->sc_opening = 0; 576 wakeup(&sc->sc_opening); 577 splx(s); 578 return (error); 579 580 bad: 581 s = spltty(); 582 CLR(tp->t_state, TS_BUSY); 583 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 584 /* 585 * We failed to open the device, and nobody else had it opened. 586 * Clean up the state as appropriate. 587 */ 588 ucom_cleanup(sc); 589 } 590 splx(s); 591 592 return (error); 593 } 594 595 int 596 ucomclose(dev_t dev, int flag, int mode, struct lwp *l) 597 { 598 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 599 struct tty *tp; 600 int s; 601 602 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev))); 603 604 if (sc == NULL) 605 return 0; 606 607 tp = sc->sc_tty; 608 609 if (!ISSET(tp->t_state, TS_ISOPEN)) 610 return (0); 611 612 s = spltty(); 613 sc->sc_refcnt++; 614 615 (*tp->t_linesw->l_close)(tp, flag); 616 ttyclose(tp); 617 618 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 619 /* 620 * Although we got a last close, the device may still be in 621 * use; e.g. if this was the dialout node, and there are still 622 * processes waiting for carrier on the non-dialout node. 623 */ 624 ucom_cleanup(sc); 625 } 626 627 if (sc->sc_methods->ucom_close != NULL) 628 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno); 629 630 if (--sc->sc_refcnt < 0) 631 usb_detach_wakeupold(sc->sc_dev); 632 splx(s); 633 634 return (0); 635 } 636 637 int 638 ucomread(dev_t dev, struct uio *uio, int flag) 639 { 640 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 641 struct tty *tp; 642 int error; 643 644 if (sc == NULL || sc->sc_dying) 645 return (EIO); 646 647 tp = sc->sc_tty; 648 649 sc->sc_refcnt++; 650 error = ((*tp->t_linesw->l_read)(tp, uio, flag)); 651 if (--sc->sc_refcnt < 0) 652 usb_detach_wakeupold(sc->sc_dev); 653 return (error); 654 } 655 656 int 657 ucomwrite(dev_t dev, struct uio *uio, int flag) 658 { 659 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 660 struct tty *tp; 661 int error; 662 663 if (sc == NULL || sc->sc_dying) 664 return (EIO); 665 666 tp = sc->sc_tty; 667 668 sc->sc_refcnt++; 669 error = ((*tp->t_linesw->l_write)(tp, uio, flag)); 670 if (--sc->sc_refcnt < 0) 671 usb_detach_wakeupold(sc->sc_dev); 672 return (error); 673 } 674 675 int 676 ucompoll(dev_t dev, int events, struct lwp *l) 677 { 678 struct ucom_softc *sc; 679 struct tty *tp; 680 int revents; 681 682 sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 683 if (sc == NULL || sc->sc_dying) 684 return (POLLHUP); 685 686 tp = sc->sc_tty; 687 688 sc->sc_refcnt++; 689 revents = ((*tp->t_linesw->l_poll)(tp, events, l)); 690 if (--sc->sc_refcnt < 0) 691 usb_detach_wakeupold(sc->sc_dev); 692 return (revents); 693 } 694 695 struct tty * 696 ucomtty(dev_t dev) 697 { 698 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 699 700 return ((sc != NULL) ? sc->sc_tty : NULL); 701 } 702 703 int 704 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 705 { 706 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev)); 707 int error; 708 709 if (sc == NULL || sc->sc_dying) 710 return (EIO); 711 712 sc->sc_refcnt++; 713 error = ucom_do_ioctl(sc, cmd, data, flag, l); 714 if (--sc->sc_refcnt < 0) 715 usb_detach_wakeupold(sc->sc_dev); 716 return (error); 717 } 718 719 static int 720 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, 721 int flag, struct lwp *l) 722 { 723 struct tty *tp = sc->sc_tty; 724 int error; 725 int s; 726 727 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); 728 729 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 730 if (error != EPASSTHROUGH) 731 return (error); 732 733 error = ttioctl(tp, cmd, data, flag, l); 734 if (error != EPASSTHROUGH) 735 return (error); 736 737 if (sc->sc_methods->ucom_ioctl != NULL) { 738 error = sc->sc_methods->ucom_ioctl(sc->sc_parent, 739 sc->sc_portno, cmd, data, flag, l->l_proc); 740 if (error != EPASSTHROUGH) 741 return (error); 742 } 743 744 error = 0; 745 746 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd)); 747 s = spltty(); 748 749 switch (cmd) { 750 case TIOCSBRK: 751 ucom_break(sc, 1); 752 break; 753 754 case TIOCCBRK: 755 ucom_break(sc, 0); 756 break; 757 758 case TIOCSDTR: 759 ucom_dtr(sc, 1); 760 break; 761 762 case TIOCCDTR: 763 ucom_dtr(sc, 0); 764 break; 765 766 case TIOCGFLAGS: 767 *(int *)data = sc->sc_swflags; 768 break; 769 770 case TIOCSFLAGS: 771 error = kauth_authorize_device_tty(l->l_cred, 772 KAUTH_DEVICE_TTY_PRIVSET, tp); 773 if (error) 774 break; 775 sc->sc_swflags = *(int *)data; 776 break; 777 778 case TIOCMSET: 779 case TIOCMBIS: 780 case TIOCMBIC: 781 tiocm_to_ucom(sc, cmd, *(int *)data); 782 break; 783 784 case TIOCMGET: 785 *(int *)data = ucom_to_tiocm(sc); 786 break; 787 788 case PPS_IOC_CREATE: 789 case PPS_IOC_DESTROY: 790 case PPS_IOC_GETPARAMS: 791 case PPS_IOC_SETPARAMS: 792 case PPS_IOC_GETCAP: 793 case PPS_IOC_FETCH: 794 #ifdef PPS_SYNC 795 case PPS_IOC_KCBIND: 796 #endif 797 mutex_spin_enter(&timecounter_lock); 798 error = pps_ioctl(cmd, data, &sc->sc_pps_state); 799 mutex_spin_exit(&timecounter_lock); 800 break; 801 802 default: 803 error = EPASSTHROUGH; 804 break; 805 } 806 807 splx(s); 808 809 return (error); 810 } 811 812 static void 813 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits) 814 { 815 u_char combits; 816 817 combits = 0; 818 if (ISSET(ttybits, TIOCM_DTR)) 819 SET(combits, UMCR_DTR); 820 if (ISSET(ttybits, TIOCM_RTS)) 821 SET(combits, UMCR_RTS); 822 823 switch (how) { 824 case TIOCMBIC: 825 CLR(sc->sc_mcr, combits); 826 break; 827 828 case TIOCMBIS: 829 SET(sc->sc_mcr, combits); 830 break; 831 832 case TIOCMSET: 833 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS); 834 SET(sc->sc_mcr, combits); 835 break; 836 } 837 838 if (how == TIOCMSET || ISSET(combits, UMCR_DTR)) 839 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0); 840 if (how == TIOCMSET || ISSET(combits, UMCR_RTS)) 841 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0); 842 } 843 844 static int 845 ucom_to_tiocm(struct ucom_softc *sc) 846 { 847 u_char combits; 848 int ttybits = 0; 849 850 combits = sc->sc_mcr; 851 if (ISSET(combits, UMCR_DTR)) 852 SET(ttybits, TIOCM_DTR); 853 if (ISSET(combits, UMCR_RTS)) 854 SET(ttybits, TIOCM_RTS); 855 856 combits = sc->sc_msr; 857 if (ISSET(combits, UMSR_DCD)) 858 SET(ttybits, TIOCM_CD); 859 if (ISSET(combits, UMSR_CTS)) 860 SET(ttybits, TIOCM_CTS); 861 if (ISSET(combits, UMSR_DSR)) 862 SET(ttybits, TIOCM_DSR); 863 if (ISSET(combits, UMSR_RI | UMSR_TERI)) 864 SET(ttybits, TIOCM_RI); 865 866 #if 0 867 XXX; 868 if (sc->sc_ier != 0) 869 SET(ttybits, TIOCM_LE); 870 #endif 871 872 return (ttybits); 873 } 874 875 static void 876 ucom_break(struct ucom_softc *sc, int onoff) 877 { 878 DPRINTF(("ucom_break: onoff=%d\n", onoff)); 879 880 if (sc->sc_methods->ucom_set != NULL) 881 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 882 UCOM_SET_BREAK, onoff); 883 } 884 885 static void 886 ucom_dtr(struct ucom_softc *sc, int onoff) 887 { 888 DPRINTF(("ucom_dtr: onoff=%d\n", onoff)); 889 890 if (sc->sc_methods->ucom_set != NULL) 891 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 892 UCOM_SET_DTR, onoff); 893 } 894 895 static void 896 ucom_rts(struct ucom_softc *sc, int onoff) 897 { 898 DPRINTF(("ucom_rts: onoff=%d\n", onoff)); 899 900 if (sc->sc_methods->ucom_set != NULL) 901 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno, 902 UCOM_SET_RTS, onoff); 903 } 904 905 void 906 ucom_status_change(struct ucom_softc *sc) 907 { 908 struct tty *tp = sc->sc_tty; 909 u_char old_msr; 910 911 if (sc->sc_methods->ucom_get_status != NULL) { 912 old_msr = sc->sc_msr; 913 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno, 914 &sc->sc_lsr, &sc->sc_msr); 915 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) { 916 mutex_spin_enter(&timecounter_lock); 917 pps_capture(&sc->sc_pps_state); 918 pps_event(&sc->sc_pps_state, 919 (sc->sc_msr & UMSR_DCD) ? 920 PPS_CAPTUREASSERT : 921 PPS_CAPTURECLEAR); 922 mutex_spin_exit(&timecounter_lock); 923 924 (*tp->t_linesw->l_modem)(tp, 925 ISSET(sc->sc_msr, UMSR_DCD)); 926 } 927 } else { 928 sc->sc_lsr = 0; 929 /* Assume DCD is present, if we have no chance to check it. */ 930 sc->sc_msr = UMSR_DCD; 931 } 932 } 933 934 static int 935 ucomparam(struct tty *tp, struct termios *t) 936 { 937 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 938 UCOMUNIT(tp->t_dev)); 939 int error; 940 941 if (sc == NULL || sc->sc_dying) 942 return (EIO); 943 944 /* Check requested parameters. */ 945 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 946 return (EINVAL); 947 948 /* 949 * For the console, always force CLOCAL and !HUPCL, so that the port 950 * is always active. 951 */ 952 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 953 SET(t->c_cflag, CLOCAL); 954 CLR(t->c_cflag, HUPCL); 955 } 956 957 /* 958 * If there were no changes, don't do anything. This avoids dropping 959 * input and improves performance when all we did was frob things like 960 * VMIN and VTIME. 961 */ 962 if (tp->t_ospeed == t->c_ospeed && 963 tp->t_cflag == t->c_cflag) 964 return (0); 965 966 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 967 968 /* And copy to tty. */ 969 tp->t_ispeed = 0; 970 tp->t_ospeed = t->c_ospeed; 971 tp->t_cflag = t->c_cflag; 972 973 if (sc->sc_methods->ucom_param != NULL) { 974 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno, 975 t); 976 if (error) 977 return (error); 978 } 979 980 /* XXX worry about CHWFLOW */ 981 982 /* 983 * Update the tty layer's idea of the carrier bit, in case we changed 984 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 985 * explicit request. 986 */ 987 DPRINTF(("ucomparam: l_modem\n")); 988 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD)); 989 990 #if 0 991 XXX what if the hardware is not open 992 if (!ISSET(t->c_cflag, CHWFLOW)) { 993 if (sc->sc_tx_stopped) { 994 sc->sc_tx_stopped = 0; 995 ucomstart(tp); 996 } 997 } 998 #endif 999 1000 return (0); 1001 } 1002 1003 static int 1004 ucomhwiflow(struct tty *tp, int block) 1005 { 1006 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 1007 UCOMUNIT(tp->t_dev)); 1008 int old; 1009 1010 if (sc == NULL) 1011 return (0); 1012 1013 old = sc->sc_rx_stopped; 1014 sc->sc_rx_stopped = (u_char)block; 1015 1016 if (old && !block) { 1017 int s = splusb(); 1018 sc->sc_rx_unblock = 1; 1019 softint_schedule(sc->sc_si); 1020 splx(s); 1021 } 1022 1023 return (1); 1024 } 1025 1026 static void 1027 ucomstart(struct tty *tp) 1028 { 1029 struct ucom_softc *sc = device_lookup_private(&ucom_cd, 1030 UCOMUNIT(tp->t_dev)); 1031 struct ucom_buffer *ub; 1032 int s; 1033 u_char *data; 1034 int cnt; 1035 1036 if (sc == NULL || sc->sc_dying) 1037 return; 1038 1039 s = spltty(); 1040 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1041 goto out; 1042 if (sc->sc_tx_stopped) 1043 goto out; 1044 1045 if (!ttypull(tp)) 1046 goto out; 1047 1048 /* Grab the first contiguous region of buffer space. */ 1049 data = tp->t_outq.c_cf; 1050 cnt = ndqb(&tp->t_outq, 0); 1051 1052 if (cnt == 0) 1053 goto out; 1054 1055 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free); 1056 if (ub == NULL) { 1057 SET(tp->t_state, TS_BUSY); 1058 goto out; 1059 } 1060 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link); 1061 1062 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL) 1063 SET(tp->t_state, TS_BUSY); 1064 1065 if (cnt > sc->sc_obufsize) 1066 cnt = sc->sc_obufsize; 1067 1068 if (sc->sc_methods->ucom_write != NULL) 1069 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno, 1070 ub->ub_data, data, &cnt); 1071 else 1072 memcpy(ub->ub_data, data, cnt); 1073 1074 ub->ub_len = cnt; 1075 ub->ub_index = 0; 1076 1077 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link); 1078 1079 softint_schedule(sc->sc_si); 1080 1081 out: 1082 splx(s); 1083 } 1084 1085 void 1086 ucomstop(struct tty *tp, int flag) 1087 { 1088 #if 0 1089 /*struct ucom_softc *sc = 1090 device_lookup_private(&ucom_cd, UCOMUNIT(tp->t_dev));*/ 1091 int s; 1092 1093 s = spltty(); 1094 if (ISSET(tp->t_state, TS_BUSY)) { 1095 /* sc->sc_tx_stopped = 1; */ 1096 if (!ISSET(tp->t_state, TS_TTSTOP)) 1097 SET(tp->t_state, TS_FLUSH); 1098 } 1099 splx(s); 1100 #endif 1101 } 1102 1103 static void 1104 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub, 1105 usbd_status err) 1106 { 1107 struct tty *tp = sc->sc_tty; 1108 uint32_t cc = ub->ub_len; 1109 1110 switch (err) { 1111 case USBD_IN_PROGRESS: 1112 ub->ub_index = ub->ub_len; 1113 break; 1114 case USBD_STALLED: 1115 ub->ub_index = 0; 1116 softint_schedule(sc->sc_si); 1117 break; 1118 case USBD_NORMAL_COMPLETION: 1119 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL); 1120 rnd_add_uint32(&sc->sc_rndsource, cc); 1121 /*FALLTHROUGH*/ 1122 default: 1123 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link); 1124 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link); 1125 cc -= sc->sc_opkthdrlen; 1126 1127 mutex_spin_enter(&tty_lock); 1128 CLR(tp->t_state, TS_BUSY); 1129 if (ISSET(tp->t_state, TS_FLUSH)) 1130 CLR(tp->t_state, TS_FLUSH); 1131 else 1132 ndflush(&tp->t_outq, cc); 1133 mutex_spin_exit(&tty_lock); 1134 1135 if (err != USBD_CANCELLED && err != USBD_IOERROR && 1136 !sc->sc_dying) { 1137 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL) 1138 ucom_submit_write(sc, ub); 1139 1140 (*tp->t_linesw->l_start)(tp); 1141 } 1142 break; 1143 } 1144 } 1145 1146 /* Call at spltty() */ 1147 static void 1148 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub) 1149 { 1150 1151 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe, 1152 (usbd_private_handle)sc, ub->ub_data, ub->ub_len, 1153 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb); 1154 1155 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer)); 1156 } 1157 1158 static void 1159 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1160 { 1161 struct ucom_softc *sc = (struct ucom_softc *)p; 1162 int s; 1163 1164 s = spltty(); 1165 1166 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status); 1167 1168 splx(s); 1169 } 1170 1171 static void 1172 ucom_softintr(void *arg) 1173 { 1174 struct ucom_softc *sc = arg; 1175 struct tty *tp = sc->sc_tty; 1176 struct ucom_buffer *ub; 1177 int s; 1178 1179 if (!ISSET(tp->t_state, TS_ISOPEN)) 1180 return; 1181 1182 s = spltty(); 1183 1184 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full); 1185 1186 if (ub != NULL && ub->ub_index == 0) 1187 ucom_submit_write(sc, ub); 1188 1189 if (sc->sc_rx_unblock) 1190 ucom_read_complete(sc); 1191 1192 splx(s); 1193 } 1194 1195 static void 1196 ucom_read_complete(struct ucom_softc *sc) 1197 { 1198 int (*rint)(int, struct tty *); 1199 struct ucom_buffer *ub; 1200 struct tty *tp; 1201 int s; 1202 1203 tp = sc->sc_tty; 1204 rint = tp->t_linesw->l_rint; 1205 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1206 1207 while (ub != NULL && !sc->sc_rx_stopped) { 1208 1209 s = spltty(); 1210 1211 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) { 1212 /* Give characters to tty layer. */ 1213 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) { 1214 /* Overflow: drop remainder */ 1215 ub->ub_index = ub->ub_len; 1216 } else 1217 ub->ub_index++; 1218 } 1219 1220 splx(s); 1221 1222 if (ub->ub_index == ub->ub_len) { 1223 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link); 1224 1225 ucomsubmitread(sc, ub); 1226 1227 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full); 1228 } 1229 } 1230 1231 sc->sc_rx_unblock = (ub != NULL); 1232 } 1233 1234 static usbd_status 1235 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub) 1236 { 1237 usbd_status err; 1238 1239 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe, 1240 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize, 1241 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); 1242 1243 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) { 1244 /* XXX: Recover from this, please! */ 1245 printf("ucomsubmitread: err=%s\n", usbd_errstr(err)); 1246 return (err); 1247 } 1248 1249 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link); 1250 1251 return (USBD_NORMAL_COMPLETION); 1252 } 1253 1254 static void 1255 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) 1256 { 1257 struct ucom_softc *sc = (struct ucom_softc *)p; 1258 struct tty *tp = sc->sc_tty; 1259 struct ucom_buffer *ub; 1260 uint32_t cc; 1261 u_char *cp; 1262 int s; 1263 1264 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty); 1265 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link); 1266 1267 if (status == USBD_CANCELLED || status == USBD_IOERROR || 1268 sc->sc_dying) { 1269 DPRINTF(("ucomreadcb: dying\n")); 1270 ub->ub_index = ub->ub_len = 0; 1271 /* Send something to wake upper layer */ 1272 s = spltty(); 1273 if (status != USBD_CANCELLED) { 1274 (tp->t_linesw->l_rint)('\n', tp); 1275 mutex_spin_enter(&tty_lock); /* XXX */ 1276 ttwakeup(tp); 1277 mutex_spin_exit(&tty_lock); /* XXX */ 1278 } 1279 splx(s); 1280 return; 1281 } 1282 1283 if (status == USBD_STALLED) { 1284 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); 1285 ucomsubmitread(sc, ub); 1286 return; 1287 } 1288 1289 if (status != USBD_NORMAL_COMPLETION) { 1290 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status)); 1291 return; 1292 } 1293 1294 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL); 1295 1296 #ifdef UCOM_DEBUG 1297 /* This is triggered by uslsa(4) occasionally. */ 1298 if ((ucomdebug > 0) && (cc == 0)) { 1299 device_printf(sc->sc_dev, "ucomreadcb: zero length xfer!\n"); 1300 } 1301 #endif 1302 1303 KDASSERT(cp == ub->ub_data); 1304 1305 rnd_add_uint32(&sc->sc_rndsource, cc); 1306 1307 if (sc->sc_opening) { 1308 ucomsubmitread(sc, ub); 1309 return; 1310 } 1311 1312 if (sc->sc_methods->ucom_read != NULL) { 1313 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno, 1314 &cp, &cc); 1315 ub->ub_index = (u_int)(cp - ub->ub_data); 1316 } else 1317 ub->ub_index = 0; 1318 1319 ub->ub_len = cc; 1320 1321 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link); 1322 1323 ucom_read_complete(sc); 1324 } 1325 1326 static void 1327 ucom_cleanup(struct ucom_softc *sc) 1328 { 1329 struct ucom_buffer *ub; 1330 1331 DPRINTF(("ucom_cleanup: closing pipes\n")); 1332 1333 ucom_shutdown(sc); 1334 if (sc->sc_bulkin_pipe != NULL) { 1335 usbd_abort_pipe(sc->sc_bulkin_pipe); 1336 usbd_close_pipe(sc->sc_bulkin_pipe); 1337 sc->sc_bulkin_pipe = NULL; 1338 } 1339 if (sc->sc_bulkout_pipe != NULL) { 1340 usbd_abort_pipe(sc->sc_bulkout_pipe); 1341 usbd_close_pipe(sc->sc_bulkout_pipe); 1342 sc->sc_bulkout_pipe = NULL; 1343 } 1344 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) { 1345 if (ub->ub_xfer != NULL) { 1346 usbd_free_xfer(ub->ub_xfer); 1347 ub->ub_xfer = NULL; 1348 ub->ub_data = NULL; 1349 } 1350 } 1351 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){ 1352 if (ub->ub_xfer != NULL) { 1353 usbd_free_xfer(ub->ub_xfer); 1354 ub->ub_xfer = NULL; 1355 ub->ub_data = NULL; 1356 } 1357 } 1358 } 1359 1360 #endif /* NUCOM > 0 */ 1361 1362 int 1363 ucomprint(void *aux, const char *pnp) 1364 { 1365 struct ucom_attach_args *uca = aux; 1366 1367 if (pnp) 1368 aprint_normal("ucom at %s", pnp); 1369 if (uca->portno != UCOM_UNK_PORTNO) 1370 aprint_normal(" portno %d", uca->portno); 1371 return (UNCONF); 1372 } 1373 1374 int 1375 ucomsubmatch(device_t parent, cfdata_t cf, 1376 const int *ldesc, void *aux) 1377 { 1378 struct ucom_attach_args *uca = aux; 1379 1380 if (uca->portno != UCOM_UNK_PORTNO && 1381 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT && 1382 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno) 1383 return (0); 1384 return (config_match(parent, cf, aux)); 1385 } 1386
Indexes created Sat Oct 18 17:09:52 GMT 2025