1 /* $NetBSD: ucycom.c,v 1.20 2007/12/11 12:16:34 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nick Hudson 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * This code is based on the ucom driver. 40 */ 41 42 /* 43 * Device driver for Cypress CY7C637xx and CY7C640/1xx series USB to 44 * RS232 bridges. 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: ucycom.c,v 1.20 2007/12/11 12:16:34 lukem Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/conf.h> 53 #include <sys/kernel.h> 54 #include <sys/malloc.h> 55 #include <sys/device.h> 56 #include <sys/sysctl.h> 57 #include <sys/tty.h> 58 #include <sys/file.h> 59 #include <sys/vnode.h> 60 #include <sys/kauth.h> 61 62 #include <dev/usb/usb.h> 63 #include <dev/usb/usbhid.h> 64 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include <dev/usb/usbdevs.h> 68 #include <dev/usb/uhidev.h> 69 #include <dev/usb/hid.h> 70 71 #include "ioconf.h" 72 73 #ifdef UCYCOM_DEBUG 74 #define DPRINTF(x) if (ucycomdebug) logprintf x 75 #define DPRINTFN(n, x) if (ucycomdebug > (n)) logprintf x 76 int ucycomdebug = 0; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n,x) 80 #endif 81 82 83 #define UCYCOMUNIT_MASK 0x3ffff 84 #define UCYCOMDIALOUT_MASK 0x80000 85 #define UCYCOMCALLUNIT_MASK 0x40000 86 87 #define UCYCOMUNIT(x) (minor(x) & UCYCOMUNIT_MASK) 88 #define UCYCOMDIALOUT(x) (minor(x) & UCYCOMDIALOUT_MASK) 89 #define UCYCOMCALLUNIT(x) (minor(x) & UCYCOMCALLUNIT_MASK) 90 91 /* Configuration Byte */ 92 #define UCYCOM_RESET 0x80 93 #define UCYCOM_PARITY_TYPE_MASK 0x20 94 #define UCYCOM_PARITY_ODD 0x20 95 #define UCYCOM_PARITY_EVEN 0x00 96 #define UCYCOM_PARITY_MASK 0x10 97 #define UCYCOM_PARITY_ON 0x10 98 #define UCYCOM_PARITY_OFF 0x00 99 #define UCYCOM_STOP_MASK 0x08 100 #define UCYCOM_STOP_BITS_2 0x08 101 #define UCYCOM_STOP_BITS_1 0x00 102 #define UCYCOM_DATA_MASK 0x03 103 #define UCYCOM_DATA_BITS_8 0x03 104 #define UCYCOM_DATA_BITS_7 0x02 105 #define UCYCOM_DATA_BITS_6 0x01 106 #define UCYCOM_DATA_BITS_5 0x00 107 108 /* Modem (Input) status byte */ 109 #define UCYCOM_RI 0x80 110 #define UCYCOM_DCD 0x40 111 #define UCYCOM_DSR 0x20 112 #define UCYCOM_CTS 0x10 113 #define UCYCOM_ERROR 0x08 114 #define UCYCOM_LMASK 0x07 115 116 /* Modem (Output) control byte */ 117 #define UCYCOM_DTR 0x20 118 #define UCYCOM_RTS 0x10 119 #define UCYCOM_ORESET 0x08 120 121 struct ucycom_softc { 122 struct uhidev sc_hdev; 123 124 struct tty *sc_tty; 125 126 /* uhidev parameters */ 127 size_t sc_flen; /* feature report length */ 128 size_t sc_ilen; /* input report length */ 129 size_t sc_olen; /* output report length */ 130 131 uint8_t *sc_obuf; 132 133 /* settings */ 134 uint32_t sc_baud; 135 uint8_t sc_cfg; /* Data format */ 136 uint8_t sc_mcr; /* Modem control */ 137 uint8_t sc_msr; /* Modem status */ 138 int sc_swflags; 139 140 /* flags */ 141 char sc_dying; 142 }; 143 144 dev_type_open(ucycomopen); 145 dev_type_close(ucycomclose); 146 dev_type_read(ucycomread); 147 dev_type_write(ucycomwrite); 148 dev_type_ioctl(ucycomioctl); 149 dev_type_stop(ucycomstop); 150 dev_type_tty(ucycomtty); 151 dev_type_poll(ucycompoll); 152 153 const struct cdevsw ucycom_cdevsw = { 154 ucycomopen, ucycomclose, ucycomread, ucycomwrite, ucycomioctl, 155 ucycomstop, ucycomtty, ucycompoll, nommap, ttykqfilter, D_TTY 156 }; 157 158 Static int ucycomparam(struct tty *, struct termios *); 159 Static void ucycomstart(struct tty *); 160 Static void ucycom_intr(struct uhidev *, void *, u_int); 161 Static int ucycom_configure(struct ucycom_softc *, uint32_t, uint8_t); 162 Static void tiocm_to_ucycom(struct ucycom_softc *, u_long, int); 163 Static int ucycom_to_tiocm(struct ucycom_softc *); 164 Static void ucycom_set_status(struct ucycom_softc *); 165 Static void ucycom_dtr(struct ucycom_softc *, int); 166 #if 0 167 Static void ucycom_rts(struct ucycom_softc *, int); 168 #endif 169 Static void ucycom_cleanup(struct ucycom_softc *sc); 170 171 #ifdef UCYCOM_DEBUG 172 Static void ucycom_get_cfg(struct ucycom_softc *); 173 #endif 174 175 Static const struct usb_devno ucycom_devs[] = { 176 { USB_VENDOR_CYPRESS, USB_PRODUCT_CYPRESS_USBRS232 }, 177 { USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EARTHMATE }, 178 }; 179 #define ucycom_lookup(v, p) usb_lookup(ucycom_devs, v, p) 180 181 USB_DECLARE_DRIVER(ucycom); 182 183 int 184 ucycom_match(struct device *parent, struct cfdata *match, 185 void *aux) 186 { 187 struct uhidev_attach_arg *uha = aux; 188 189 return (ucycom_lookup(uha->uaa->vendor, uha->uaa->product) != NULL ? 190 UMATCH_VENDOR_PRODUCT : UMATCH_NONE); 191 } 192 193 void 194 ucycom_attach(struct device *parent, struct device *self, void *aux) 195 { 196 struct ucycom_softc *sc = (struct ucycom_softc *)self; 197 struct uhidev_attach_arg *uha = aux; 198 int size, repid; 199 void *desc; 200 201 sc->sc_hdev.sc_intr = ucycom_intr; 202 sc->sc_hdev.sc_parent = uha->parent; 203 sc->sc_hdev.sc_report_id = uha->reportid; 204 205 uhidev_get_report_desc(uha->parent, &desc, &size); 206 repid = uha->reportid; 207 sc->sc_ilen = hid_report_size(desc, size, hid_input, repid); 208 sc->sc_olen = hid_report_size(desc, size, hid_output, repid); 209 sc->sc_flen = hid_report_size(desc, size, hid_feature, repid); 210 211 sc->sc_msr = sc->sc_mcr = 0; 212 213 /* set up tty */ 214 sc->sc_tty = ttymalloc(); 215 sc->sc_tty->t_sc = sc; 216 sc->sc_tty->t_oproc = ucycomstart; 217 sc->sc_tty->t_param = ucycomparam; 218 219 tty_attach(sc->sc_tty); 220 221 /* Nothing interesting to report */ 222 printf("\n"); 223 224 } 225 226 227 int 228 ucycom_detach(struct device *self, int flags) 229 { 230 struct ucycom_softc *sc = (struct ucycom_softc *)self; 231 struct tty *tp = sc->sc_tty; 232 int maj, mn; 233 int s; 234 235 DPRINTF(("ucycom_detach: sc=%p flags=%d tp=%p\n", sc, flags, tp)); 236 237 sc->sc_dying = 1; 238 239 s = splusb(); 240 if (tp != NULL) { 241 mutex_spin_enter(&tty_lock); 242 CLR(tp->t_state, TS_CARR_ON); 243 CLR(tp->t_cflag, CLOCAL | MDMBUF); 244 ttyflush(tp, FREAD|FWRITE); 245 mutex_spin_exit(&tty_lock); 246 } 247 /* Wait for processes to go away. */ 248 usb_detach_wait(USBDEV(sc->sc_hdev.sc_dev)); 249 splx(s); 250 251 /* locate the major number */ 252 maj = cdevsw_lookup_major(&ucycom_cdevsw); 253 254 /* Nuke the vnodes for any open instances. */ 255 mn = device_unit(self); 256 257 DPRINTFN(2, ("ucycom_detach: maj=%d mn=%d\n", maj, mn)); 258 vdevgone(maj, mn, mn, VCHR); 259 vdevgone(maj, mn | UCYCOMDIALOUT_MASK, mn | UCYCOMDIALOUT_MASK, VCHR); 260 vdevgone(maj, mn | UCYCOMCALLUNIT_MASK, mn | UCYCOMCALLUNIT_MASK, VCHR); 261 262 /* Detach and free the tty. */ 263 if (tp != NULL) { 264 DPRINTF(("ucycom_detach: tty_detach %p\n", tp)); 265 tty_detach(tp); 266 ttyfree(tp); 267 sc->sc_tty = NULL; 268 } 269 270 return 0; 271 } 272 273 int 274 ucycom_activate(device_ptr_t self, enum devact act) 275 { 276 struct ucycom_softc *sc = (struct ucycom_softc *)self; 277 278 DPRINTFN(5,("ucycom_activate: %d\n", act)); 279 280 switch (act) { 281 case DVACT_ACTIVATE: 282 return (EOPNOTSUPP); 283 284 case DVACT_DEACTIVATE: 285 sc->sc_dying = 1; 286 break; 287 } 288 return (0); 289 } 290 291 #if 0 292 void 293 ucycom_shutdown(struct ucycom_softc *sc) 294 { 295 struct tty *tp = sc->sc_tty; 296 297 DPRINTF(("ucycom_shutdown\n")); 298 /* 299 * Hang up if necessary. Wait a bit, so the other side has time to 300 * notice even if we immediately open the port again. 301 */ 302 if (ISSET(tp->t_cflag, HUPCL)) { 303 ucycom_dtr(sc, 0); 304 (void)tsleep(sc, TTIPRI, ttclos, hz); 305 } 306 } 307 #endif 308 309 int 310 ucycomopen(dev_t dev, int flag, int mode, struct lwp *l) 311 { 312 int unit = UCYCOMUNIT(dev); 313 struct ucycom_softc *sc; 314 struct tty *tp; 315 int s, err; 316 317 DPRINTF(("ucycomopen: unit=%d\n", unit)); 318 319 if (unit >= ucycom_cd.cd_ndevs) 320 return (ENXIO); 321 sc = ucycom_cd.cd_devs[unit]; 322 323 DPRINTF(("ucycomopen: sc=%p\n", sc)); 324 325 if (sc == NULL) 326 return (ENXIO); 327 328 if (sc->sc_dying) 329 return (EIO); 330 331 if (!device_is_active(&sc->sc_hdev.sc_dev)) 332 return (ENXIO); 333 334 tp = sc->sc_tty; 335 336 DPRINTF(("ucycomopen: tp=%p\n", tp)); 337 338 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 339 return (EBUSY); 340 341 s = spltty(); 342 343 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 344 struct termios t; 345 346 tp->t_dev = dev; 347 348 err = uhidev_open(&sc->sc_hdev); 349 if (err) { 350 /* Any cleanup? */ 351 splx(s); 352 return (err); 353 } 354 355 /* 356 * Initialize the termios status to the defaults. Add in the 357 * sticky bits from TIOCSFLAGS. 358 */ 359 t.c_ispeed = 0; 360 t.c_ospeed = TTYDEF_SPEED; 361 t.c_cflag = TTYDEF_CFLAG; 362 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 363 SET(t.c_cflag, CLOCAL); 364 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 365 SET(t.c_cflag, CRTSCTS); 366 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 367 SET(t.c_cflag, MDMBUF); 368 369 tp->t_ospeed = 0; 370 (void) ucycomparam(tp, &t); 371 tp->t_iflag = TTYDEF_IFLAG; 372 tp->t_oflag = TTYDEF_OFLAG; 373 tp->t_lflag = TTYDEF_LFLAG; 374 ttychars(tp); 375 ttsetwater(tp); 376 377 /* Allocate an output report buffer */ 378 sc->sc_obuf = malloc(sc->sc_olen, M_USBDEV, M_WAITOK); 379 380 DPRINTF(("ucycomopen: sc->sc_obuf=%p\n", sc->sc_obuf)); 381 382 #if 0 383 /* XXX Don't do this as for some reason trying to do an interrupt 384 * XXX out transfer at this point means everything gets stuck!?! 385 */ 386 /* 387 * Turn on DTR. We must always do this, even if carrier is not 388 * present, because otherwise we'd have to use TIOCSDTR 389 * immediately after setting CLOCAL, which applications do not 390 * expect. We always assert DTR while the device is open 391 * unless explicitly requested to deassert it. 392 */ 393 ucycom_dtr(sc, 1); 394 #endif 395 396 #if 0 397 /* XXX CLR(sc->sc_rx_flags, RX_ANY_BLOCK);*/ 398 ucycom_hwiflow(sc); 399 #endif 400 401 } 402 splx(s); 403 404 err = ttyopen(tp, UCYCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 405 if (err) 406 goto bad; 407 408 err = (*tp->t_linesw->l_open)(dev, tp); 409 if (err) 410 goto bad; 411 412 return (0); 413 414 bad: 415 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 416 /* 417 * We failed to open the device, and nobody else had it opened. 418 * Clean up the state as appropriate. 419 */ 420 ucycom_cleanup(sc); 421 } 422 423 return (err); 424 425 } 426 427 428 int 429 ucycomclose(dev_t dev, int flag, int mode, struct lwp *l) 430 { 431 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 432 struct tty *tp = sc->sc_tty; 433 434 DPRINTF(("ucycomclose: unit=%d\n", UCYCOMUNIT(dev))); 435 if (!ISSET(tp->t_state, TS_ISOPEN)) 436 return (0); 437 438 (*tp->t_linesw->l_close)(tp, flag); 439 ttyclose(tp); 440 441 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 442 /* 443 * Although we got a last close, the device may still be in 444 * use; e.g. if this was the dialout node, and there are still 445 * processes waiting for carrier on the non-dialout node. 446 */ 447 ucycom_cleanup(sc); 448 } 449 450 return (0); 451 } 452 453 Static void 454 ucycomstart(struct tty *tp) 455 { 456 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(tp->t_dev)]; 457 u_char *data; 458 int cnt, len, err, s; 459 460 if (sc->sc_dying) 461 return; 462 463 s = spltty(); 464 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) { 465 DPRINTFN(4,("ucycomstart: no go, state=0x%x\n", tp->t_state)); 466 goto out; 467 } 468 469 #if 0 470 /* HW FLOW CTL */ 471 if (sc->sc_tx_stopped) 472 goto out; 473 #endif 474 475 if (ttypull(tp) == 0) 476 goto out; 477 478 /* Grab the first contiguous region of buffer space. */ 479 data = tp->t_outq.c_cf; 480 cnt = ndqb(&tp->t_outq, 0); 481 482 if (cnt == 0) { 483 DPRINTF(("ucycomstart: cnt == 0\n")); 484 goto out; 485 } 486 487 SET(tp->t_state, TS_BUSY); 488 489 /* 490 * The 8 byte output report uses byte 0 for control and byte 491 * count. 492 * 493 * The 32 byte output report uses byte 0 for control. Byte 1 494 * is used for byte count. 495 */ 496 memset(sc->sc_obuf, 0, sc->sc_olen); 497 len = cnt; 498 switch (sc->sc_olen) { 499 case 8: 500 if (cnt > sc->sc_olen - 1) { 501 DPRINTF(("ucycomstart(8): big buffer %d chars\n", len)); 502 len = sc->sc_olen - 1; 503 } 504 505 memcpy(sc->sc_obuf + 1, data, len); 506 sc->sc_obuf[0] = len | sc->sc_mcr; 507 508 DPRINTF(("ucycomstart(8): sc->sc_obuf[0] = %d | %d = %d\n", len, sc->sc_mcr, sc->sc_obuf[0])); 509 #ifdef UCYCOM_DEBUG 510 if (ucycomdebug > 10) { 511 u_int32_t i; 512 u_int8_t *d = data; 513 514 DPRINTF(("ucycomstart(8): data =")); 515 for (i = 0; i < len; i++) 516 DPRINTF((" %02x", d[i])); 517 DPRINTF(("\n")); 518 } 519 #endif 520 break; 521 522 case 32: 523 if (cnt > sc->sc_olen - 2) { 524 DPRINTF(("ucycomstart(32): big buffer %d chars\n", len)); 525 len = sc->sc_olen - 2; 526 } 527 528 memcpy(sc->sc_obuf + 2, data, len); 529 sc->sc_obuf[0] = sc->sc_mcr; 530 sc->sc_obuf[1] = len; 531 DPRINTF(("ucycomstart(32): sc->sc_obuf[0] = %d\nsc->sc_obuf[1] = %d\n", sc->sc_obuf[0], sc->sc_obuf[1])); 532 #ifdef UCYCOM_DEBUG 533 if (ucycomdebug > 10) { 534 u_int32_t i; 535 u_int8_t *d = data; 536 537 DPRINTF(("ucycomstart(32): data =")); 538 for (i = 0; i < len; i++) 539 DPRINTF((" %02x", d[i])); 540 DPRINTF(("\n")); 541 } 542 #endif 543 break; 544 545 default: 546 DPRINTFN(2,("ucycomstart: unknown output report size (%zd)\n", 547 sc->sc_olen)); 548 goto out; 549 } 550 splx(s); 551 552 #ifdef UCYCOM_DEBUG 553 if (ucycomdebug > 5) { 554 int i; 555 556 if (len != 0) { 557 DPRINTF(("ucycomstart: sc->sc_obuf[0..%zd) =", sc->sc_olen)); 558 for (i = 0; i < sc->sc_olen; i++) 559 DPRINTF((" %02x", sc->sc_obuf[i])); 560 DPRINTF(("\n")); 561 } 562 } 563 #endif 564 err = uhidev_write(sc->sc_hdev.sc_parent, sc->sc_obuf, sc->sc_olen); 565 566 if (err) { 567 DPRINTF(("ucycomstart: error doing uhidev_write = %d\n", err)); 568 } 569 570 #ifdef UCYCOM_DEBUG 571 ucycom_get_cfg(sc); 572 #endif 573 DPRINTFN(4,("ucycomstart: req %d chars did %d chars\n", cnt, len)); 574 575 s = spltty(); 576 CLR(tp->t_state, TS_BUSY); 577 if (ISSET(tp->t_state, TS_FLUSH)) 578 CLR(tp->t_state, TS_FLUSH); 579 else 580 ndflush(&tp->t_outq, len); 581 (*tp->t_linesw->l_start)(tp); 582 583 out: 584 splx(s); 585 } 586 587 Static int 588 ucycomparam(struct tty *tp, struct termios *t) 589 { 590 struct ucycom_softc *sc = tp->t_sc; 591 uint32_t baud; 592 uint8_t cfg; 593 int err; 594 595 if (t->c_ospeed < 0) { 596 DPRINTF(("ucycomparam: c_ospeed < 0\n")); 597 return (EINVAL); 598 } 599 600 /* Check requested parameters. */ 601 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 602 return (EINVAL); 603 604 /* 605 * For the console, always force CLOCAL and !HUPCL, so that the port 606 * is always active. 607 */ 608 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) { 609 SET(t->c_cflag, CLOCAL); 610 CLR(t->c_cflag, HUPCL); 611 } 612 613 /* 614 * If there were no changes, don't do anything. This avoids dropping 615 * input and improves performance when all we did was frob things like 616 * VMIN and VTIME. 617 */ 618 if (tp->t_ospeed == t->c_ospeed && 619 tp->t_cflag == t->c_cflag) 620 return (0); 621 622 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */ 623 624 /* And copy to tty. */ 625 tp->t_ispeed = 0; 626 tp->t_ospeed = t->c_ospeed; 627 tp->t_cflag = t->c_cflag; 628 629 baud = t->c_ispeed; 630 DPRINTF(("ucycomparam: baud=%d\n", baud)); 631 632 if (t->c_cflag & CIGNORE) { 633 cfg = sc->sc_cfg; 634 } else { 635 cfg = 0; 636 switch (t->c_cflag & CSIZE) { 637 case CS8: 638 cfg |= UCYCOM_DATA_BITS_8; 639 break; 640 case CS7: 641 cfg |= UCYCOM_DATA_BITS_7; 642 break; 643 case CS6: 644 cfg |= UCYCOM_DATA_BITS_6; 645 break; 646 case CS5: 647 cfg |= UCYCOM_DATA_BITS_5; 648 break; 649 default: 650 return (EINVAL); 651 } 652 cfg |= ISSET(t->c_cflag, CSTOPB) ? 653 UCYCOM_STOP_BITS_2 : UCYCOM_STOP_BITS_1; 654 cfg |= ISSET(t->c_cflag, PARENB) ? 655 UCYCOM_PARITY_ON : UCYCOM_PARITY_OFF; 656 cfg |= ISSET(t->c_cflag, PARODD) ? 657 UCYCOM_PARITY_ODD : UCYCOM_PARITY_EVEN; 658 } 659 660 /* 661 * Update the tty layer's idea of the carrier bit, in case we changed 662 * CLOCAL or MDMBUF. We don't hang up here; we only do that by 663 * explicit request. 664 */ 665 DPRINTF(("ucycomparam: l_modem\n")); 666 (void) (*tp->t_linesw->l_modem)(tp, 1 /* XXX carrier */ ); 667 668 err = ucycom_configure(sc, baud, cfg); 669 return (err); 670 } 671 672 void 673 ucycomstop(struct tty *tp, int flag) 674 { 675 DPRINTF(("ucycomstop: flag=%d\n", flag)); 676 } 677 678 int 679 ucycomread(dev_t dev, struct uio *uio, int flag) 680 { 681 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 682 struct tty *tp = sc->sc_tty; 683 int err; 684 685 DPRINTF(("ucycomread: sc=%p, tp=%p, uio=%p, flag=%d\n", sc, tp, uio, flag)); 686 if (sc->sc_dying) 687 return (EIO); 688 689 err = ((*tp->t_linesw->l_read)(tp, uio, flag)); 690 return (err); 691 } 692 693 694 int 695 ucycomwrite(dev_t dev, struct uio *uio, int flag) 696 { 697 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 698 struct tty *tp = sc->sc_tty; 699 int err; 700 701 DPRINTF(("ucycomwrite: sc=%p, tp=%p, uio=%p, flag=%d\n", sc, tp, uio, flag)); 702 if (sc->sc_dying) 703 return (EIO); 704 705 err = ((*tp->t_linesw->l_write)(tp, uio, flag)); 706 return (err); 707 } 708 709 struct tty * 710 ucycomtty(dev_t dev) 711 { 712 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 713 struct tty *tp = sc->sc_tty; 714 715 DPRINTF(("ucycomtty: sc=%p, tp=%p\n", sc, tp)); 716 717 return (tp); 718 } 719 720 int 721 ucycomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 722 { 723 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 724 struct tty *tp = sc->sc_tty; 725 int err; 726 int s; 727 728 if (sc->sc_dying) 729 return (EIO); 730 731 DPRINTF(("ucycomioctl: sc=%p, tp=%p, data=%p\n", sc, tp, data)); 732 733 err = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 734 if (err != EPASSTHROUGH) 735 return (err); 736 737 err = ttioctl(tp, cmd, data, flag, l); 738 if (err != EPASSTHROUGH) 739 return (err); 740 741 err = 0; 742 743 DPRINTF(("ucycomioctl: our cmd=0x%08lx\n", cmd)); 744 s = spltty(); 745 746 switch (cmd) { 747 /* case TIOCSBRK: 748 ucycom_break(sc, 1); 749 break; 750 751 case TIOCCBRK: 752 ucycom_break(sc, 0); 753 break; 754 */ 755 case TIOCSDTR: 756 ucycom_dtr(sc, 1); 757 break; 758 759 case TIOCCDTR: 760 ucycom_dtr(sc, 0); 761 break; 762 763 case TIOCGFLAGS: 764 *(int *)data = sc->sc_swflags; 765 break; 766 767 case TIOCSFLAGS: 768 err = kauth_authorize_device_tty(l->l_cred, 769 KAUTH_DEVICE_TTY_PRIVSET, tp); 770 if (err) 771 break; 772 sc->sc_swflags = *(int *)data; 773 break; 774 775 case TIOCMSET: 776 case TIOCMBIS: 777 case TIOCMBIC: 778 tiocm_to_ucycom(sc, cmd, *(int *)data); 779 break; 780 781 case TIOCMGET: 782 *(int *)data = ucycom_to_tiocm(sc); 783 break; 784 785 default: 786 err = EPASSTHROUGH; 787 break; 788 } 789 790 splx(s); 791 792 return (err); 793 } 794 795 int 796 ucycompoll(dev_t dev, int events, struct lwp *l) 797 { 798 struct ucycom_softc *sc = ucycom_cd.cd_devs[UCYCOMUNIT(dev)]; 799 struct tty *tp = sc->sc_tty; 800 int err; 801 802 DPRINTF(("ucycompoll: sc=%p, tp=%p, events=%d, lwp=%p\n", sc, tp, events, l)); 803 804 if (sc->sc_dying) 805 return (EIO); 806 807 err = ((*tp->t_linesw->l_poll)(tp, events, l)); 808 return (err); 809 } 810 811 Static int 812 ucycom_configure(struct ucycom_softc *sc, uint32_t baud, uint8_t cfg) 813 { 814 uint8_t report[5]; 815 int err; 816 817 switch (baud) { 818 case 600: 819 case 1200: 820 case 2400: 821 case 4800: 822 case 9600: 823 case 19200: 824 case 38400: 825 case 57600: 826 #if 0 827 /* 828 * Stock chips only support standard baud rates in the 600 - 57600 829 * range, but higher rates can be achieved using custom firmware. 830 */ 831 case 115200: 832 case 153600: 833 case 192000: 834 #endif 835 break; 836 default: 837 return (EINVAL); 838 } 839 840 DPRINTF(("ucycom_configure: setting %d baud, %d-%c-%d (%d)\n", baud, 841 5 + (cfg & UCYCOM_DATA_MASK), 842 (cfg & UCYCOM_PARITY_MASK) ? 843 ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', 844 (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); 845 846 report[0] = baud & 0xff; 847 report[1] = (baud >> 8) & 0xff; 848 report[2] = (baud >> 16) & 0xff; 849 report[3] = (baud >> 24) & 0xff; 850 report[4] = cfg; 851 err = uhidev_set_report(&sc->sc_hdev, UHID_FEATURE_REPORT, 852 report, sc->sc_flen); 853 if (err != 0) { 854 DPRINTF(("%s\n", usbd_errstr(err))); 855 return EIO; 856 } 857 sc->sc_baud = baud; 858 sc->sc_cfg = cfg; 859 860 return 0; 861 } 862 863 Static void 864 ucycom_intr(struct uhidev *addr, void *ibuf, u_int len) 865 { 866 struct ucycom_softc *sc = (struct ucycom_softc *)addr; 867 struct tty *tp = sc->sc_tty; 868 int (*rint)(int , struct tty *) = tp->t_linesw->l_rint; 869 uint8_t *cp = ibuf; 870 int s, n, st, chg; 871 872 /* We understand 8 byte and 32 byte input records */ 873 switch (len) { 874 case 8: 875 n = cp[0] & UCYCOM_LMASK; 876 st = cp[0] & ~UCYCOM_LMASK; 877 cp++; 878 break; 879 880 case 32: 881 st = cp[0]; 882 n = cp[1]; 883 cp += 2; 884 break; 885 886 default: 887 DPRINTFN(3,("ucycom_intr: Unknown input report length\n")); 888 return; 889 } 890 891 #ifdef UCYCOM_DEBUG 892 if (ucycomdebug > 5) { 893 u_int32_t i; 894 895 if (n != 0) { 896 DPRINTF(("ucycom_intr: ibuf[0..%d) =", n)); 897 for (i = 0; i < n; i++) 898 DPRINTF((" %02x", cp[i])); 899 DPRINTF(("\n")); 900 } 901 } 902 #endif 903 s = spltty(); 904 905 /* Give characters to tty layer. */ 906 while (n-- > 0) { 907 DPRINTFN(7,("ucycom_intr: char=0x%02x\n", *cp)); 908 if ((*rint)(*cp++, tp) == -1) { 909 /* XXX what should we do? */ 910 printf("%s: lost a character\n", USBDEVNAME(sc->sc_hdev.sc_dev)); 911 break; 912 } 913 } 914 splx(s); 915 chg = st ^ sc->sc_msr; 916 sc->sc_msr = st; 917 if (ISSET(chg, UCYCOM_DCD)) 918 (*tp->t_linesw->l_modem)(tp, 919 ISSET(sc->sc_msr, UCYCOM_DCD)); 920 921 } 922 923 Static void 924 tiocm_to_ucycom(struct ucycom_softc *sc, u_long how, int ttybits) 925 { 926 u_char combits; 927 u_char before = sc->sc_mcr; 928 929 combits = 0; 930 if (ISSET(ttybits, TIOCM_DTR)) 931 SET(combits, UCYCOM_DTR); 932 if (ISSET(ttybits, TIOCM_RTS)) 933 SET(combits, UCYCOM_RTS); 934 935 switch (how) { 936 case TIOCMBIC: 937 CLR(sc->sc_mcr, combits); 938 break; 939 940 case TIOCMBIS: 941 SET(sc->sc_mcr, combits); 942 break; 943 944 case TIOCMSET: 945 CLR(sc->sc_mcr, UCYCOM_DTR | UCYCOM_RTS); 946 SET(sc->sc_mcr, combits); 947 break; 948 } 949 if (before ^ sc->sc_mcr) { 950 DPRINTF(("tiocm_to_ucycom: something has changed\n")); 951 ucycom_set_status(sc); 952 } 953 } 954 955 Static int 956 ucycom_to_tiocm(struct ucycom_softc *sc) 957 { 958 u_char combits; 959 int ttybits = 0; 960 961 combits = sc->sc_mcr; 962 if (ISSET(combits, UCYCOM_DTR)) 963 SET(ttybits, TIOCM_DTR); 964 if (ISSET(combits, UCYCOM_RTS)) 965 SET(ttybits, TIOCM_RTS); 966 967 combits = sc->sc_msr; 968 if (ISSET(combits, UCYCOM_DCD)) 969 SET(ttybits, TIOCM_CD); 970 if (ISSET(combits, UCYCOM_CTS)) 971 SET(ttybits, TIOCM_CTS); 972 if (ISSET(combits, UCYCOM_DSR)) 973 SET(ttybits, TIOCM_DSR); 974 if (ISSET(combits, UCYCOM_RI)) 975 SET(ttybits, TIOCM_RI); 976 977 return (ttybits); 978 } 979 980 Static void 981 ucycom_dtr(struct ucycom_softc *sc, int set) 982 { 983 uint8_t old; 984 985 old = sc->sc_mcr; 986 if (set) 987 SET(sc->sc_mcr, UCYCOM_DTR); 988 else 989 CLR(sc->sc_mcr, UCYCOM_DTR); 990 991 if (old ^ sc->sc_mcr) 992 ucycom_set_status(sc); 993 } 994 995 #if 0 996 Static void 997 ucycom_rts(struct ucycom_softc *sc, int set) 998 { 999 uint8_t old; 1000 1001 old = sc->sc_msr; 1002 if (set) 1003 SET(sc->sc_mcr, UCYCOM_RTS); 1004 else 1005 CLR(sc->sc_mcr, UCYCOM_RTS); 1006 1007 if (old ^ sc->sc_mcr) 1008 ucycom_set_status(sc); 1009 } 1010 #endif 1011 1012 Static void 1013 ucycom_set_status(struct ucycom_softc *sc) 1014 { 1015 int err; 1016 1017 if (sc->sc_olen != 8 && sc->sc_olen != 32) { 1018 DPRINTFN(2,("ucycom_set_status: unknown output report size (%zd)\n", 1019 sc->sc_olen)); 1020 return; 1021 } 1022 1023 DPRINTF(("ucycom_set_status: %d\n", sc->sc_mcr)); 1024 1025 memset(sc->sc_obuf, 0, sc->sc_olen); 1026 sc->sc_obuf[0] = sc->sc_mcr; 1027 1028 err = uhidev_write(sc->sc_hdev.sc_parent, sc->sc_obuf, sc->sc_olen); 1029 if (err) { 1030 DPRINTF(("ucycom_set_status: err=%d\n", err)); 1031 } 1032 } 1033 1034 #ifdef UCYCOM_DEBUG 1035 Static void 1036 ucycom_get_cfg(struct ucycom_softc *sc) 1037 { 1038 int err, cfg, baud; 1039 uint8_t report[5]; 1040 1041 err = uhidev_get_report(&sc->sc_hdev, UHID_FEATURE_REPORT, 1042 report, sc->sc_flen); 1043 cfg = report[4]; 1044 baud = (report[3] << 24) + (report[2] << 16) + (report[1] << 8) + report[0]; 1045 DPRINTF(("ucycom_configure: device reports %d baud, %d-%c-%d (%d)\n", baud, 1046 5 + (cfg & UCYCOM_DATA_MASK), 1047 (cfg & UCYCOM_PARITY_MASK) ? 1048 ((cfg & UCYCOM_PARITY_TYPE_MASK) ? 'O' : 'E') : 'N', 1049 (cfg & UCYCOM_STOP_MASK) ? 2 : 1, cfg)); 1050 } 1051 #endif 1052 1053 Static void 1054 ucycom_cleanup(struct ucycom_softc *sc) 1055 { 1056 DPRINTF(("ucycom_cleanup: closing uhidev\n")); 1057 1058 if (sc->sc_obuf !=NULL) 1059 free (sc->sc_obuf, M_USBDEV); 1060 uhidev_close(&sc->sc_hdev); 1061 } 1062