irframe_tty.c revision 1.45
1 /* $NetBSD: irframe_tty.c,v 1.45 2007/11/07 15:56:18 ad Exp $ */ 2 3 /* 4 * TODO 5 * Test dongle code. 6 */ 7 8 /* 9 * Copyright (c) 2001 The NetBSD Foundation, Inc. 10 * All rights reserved. 11 * 12 * This code is derived from software contributed to The NetBSD Foundation 13 * by Lennart Augustsson (lennart (at) augustsson.net) and Tommy Bohlin 14 * (tommy (at) gatespace.com). 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the NetBSD 27 * Foundation, Inc. and its contributors. 28 * 4. Neither the name of The NetBSD Foundation nor the names of its 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 33 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 34 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 35 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 36 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 39 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 40 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGE. 43 */ 44 45 /* 46 * Loosely based on ppp_tty.c. 47 * Framing and dongle handling written by Tommy Bohlin. 48 */ 49 50 #include <sys/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: irframe_tty.c,v 1.45 2007/11/07 15:56:18 ad Exp $"); 52 53 #include <sys/param.h> 54 #include <sys/proc.h> 55 #include <sys/ioctl.h> 56 #include <sys/tty.h> 57 #include <sys/kernel.h> 58 #include <sys/lock.h> 59 #include <sys/malloc.h> 60 #include <sys/conf.h> 61 #include <sys/systm.h> 62 #include <sys/device.h> 63 #include <sys/file.h> 64 #include <sys/vnode.h> 65 #include <sys/poll.h> 66 #include <sys/kauth.h> 67 68 #include <dev/ir/ir.h> 69 #include <dev/ir/sir.h> 70 #include <dev/ir/irdaio.h> 71 #include <dev/ir/irframevar.h> 72 73 #ifdef IRFRAMET_DEBUG 74 #define DPRINTF(x) if (irframetdebug) printf x 75 int irframetdebug = 0; 76 #else 77 #define DPRINTF(x) 78 #endif 79 80 /*****/ 81 82 /* Max size with framing. */ 83 #define MAX_IRDA_FRAME (2*IRDA_MAX_FRAME_SIZE + IRDA_MAX_EBOFS + 4) 84 85 struct irt_frame { 86 u_char *buf; 87 u_int len; 88 }; 89 #define MAXFRAMES 8 90 91 struct irframet_softc { 92 struct irframe_softc sc_irp; 93 struct tty *sc_tp; 94 95 int sc_dongle; 96 int sc_dongle_private; 97 98 int sc_state; 99 #define IRT_RSLP 0x01 /* waiting for data (read) */ 100 #if 0 101 #define IRT_WSLP 0x02 /* waiting for data (write) */ 102 #define IRT_CLOSING 0x04 /* waiting for output to drain */ 103 #endif 104 struct lock sc_wr_lk; 105 106 struct irda_params sc_params; 107 108 u_char* sc_inbuf; 109 int sc_framestate; 110 #define FRAME_OUTSIDE 0 111 #define FRAME_INSIDE 1 112 #define FRAME_ESCAPE 2 113 int sc_inchars; 114 int sc_inFCS; 115 struct callout sc_timeout; 116 117 u_int sc_nframes; 118 u_int sc_framei; 119 u_int sc_frameo; 120 struct irt_frame sc_frames[MAXFRAMES]; 121 u_int8_t sc_buffer[MAX_IRDA_FRAME]; 122 struct selinfo sc_rsel; 123 /* XXXJRT Nothing selnotify's sc_wsel */ 124 struct selinfo sc_wsel; 125 }; 126 127 /* line discipline methods */ 128 int irframetopen(dev_t, struct tty *); 129 int irframetclose(struct tty *, int); 130 int irframetioctl(struct tty *, u_long, void *, int, struct lwp *); 131 int irframetinput(int, struct tty *); 132 int irframetstart(struct tty *); 133 134 /* pseudo device init */ 135 void irframettyattach(int); 136 137 /* irframe methods */ 138 static int irframet_open(void *, int, int, struct lwp *); 139 static int irframet_close(void *, int, int, struct lwp *); 140 static int irframet_read(void *, struct uio *, int); 141 static int irframet_write(void *, struct uio *, int); 142 static int irframet_poll(void *, int, struct lwp *); 143 static int irframet_kqfilter(void *, struct knote *); 144 145 static int irframet_set_params(void *, struct irda_params *); 146 static int irframet_get_speeds(void *, int *); 147 static int irframet_get_turnarounds(void *, int *); 148 149 /* internal */ 150 static int irt_write_frame(struct tty *, u_int8_t *, size_t); 151 static int irt_putc(struct tty *, int); 152 static void irt_frame(struct irframet_softc *, u_char *, u_int); 153 static void irt_timeout(void *); 154 static void irt_ioctl(struct tty *, u_long, void *); 155 static void irt_setspeed(struct tty *, u_int); 156 static void irt_setline(struct tty *, u_int); 157 static void irt_delay(struct tty *, u_int); 158 159 static const struct irframe_methods irframet_methods = { 160 irframet_open, irframet_close, irframet_read, irframet_write, 161 irframet_poll, irframet_kqfilter, irframet_set_params, 162 irframet_get_speeds, irframet_get_turnarounds 163 }; 164 165 static void irts_none(struct tty *, u_int); 166 static void irts_tekram(struct tty *, u_int); 167 static void irts_jeteye(struct tty *, u_int); 168 static void irts_actisys(struct tty *, u_int); 169 static void irts_litelink(struct tty *, u_int); 170 static void irts_girbil(struct tty *, u_int); 171 172 #define NORMAL_SPEEDS (IRDA_SPEEDS_SIR & ~IRDA_SPEED_2400) 173 #define TURNT_POS (IRDA_TURNT_10000 | IRDA_TURNT_5000 | IRDA_TURNT_1000 | \ 174 IRDA_TURNT_500 | IRDA_TURNT_100 | IRDA_TURNT_50 | IRDA_TURNT_10) 175 static const struct dongle { 176 void (*setspeed)(struct tty *, u_int); 177 u_int speedmask; 178 u_int turnmask; 179 } irt_dongles[DONGLE_MAX] = { 180 /* Indexed by dongle number from irdaio.h */ 181 { irts_none, IRDA_SPEEDS_SIR, IRDA_TURNT_10000 }, 182 { irts_tekram, IRDA_SPEEDS_SIR, IRDA_TURNT_10000 }, 183 { irts_jeteye, IRDA_SPEED_9600|IRDA_SPEED_19200|IRDA_SPEED_115200, 184 IRDA_TURNT_10000 }, 185 { irts_actisys, NORMAL_SPEEDS & ~IRDA_SPEED_38400, TURNT_POS }, 186 { irts_actisys, NORMAL_SPEEDS, TURNT_POS }, 187 { irts_litelink, NORMAL_SPEEDS, TURNT_POS }, 188 { irts_girbil, IRDA_SPEEDS_SIR, IRDA_TURNT_10000 | IRDA_TURNT_5000 }, 189 }; 190 191 static struct linesw irframet_disc = { 192 .l_name = "irframe", 193 .l_open = irframetopen, 194 .l_close = irframetclose, 195 .l_read = ttyerrio, 196 .l_write = ttyerrio, 197 .l_ioctl = irframetioctl, 198 .l_rint = irframetinput, 199 .l_start = irframetstart, 200 .l_modem = ttymodem, 201 .l_poll = ttyerrpoll 202 }; 203 204 /* glue to attach irframe device */ 205 static void irframet_attach(struct device *, struct device *, void *); 206 static int irframet_detach(struct device *, int); 207 208 CFATTACH_DECL(irframet, sizeof(struct irframet_softc), 209 NULL, irframet_attach, irframet_detach, NULL); 210 211 void 212 irframettyattach(int n) 213 { 214 extern struct cfdriver irframe_cd; 215 216 (void) ttyldisc_attach(&irframet_disc); 217 218 /* XXX might fail if "real" attachments have pulled this in */ 219 /* XXX should not be done here */ 220 config_cfdriver_attach(&irframe_cd); 221 222 config_cfattach_attach("irframe", &irframet_ca); 223 } 224 225 static void 226 irframet_attach(struct device *parent, struct device *self, void *aux) 227 { 228 229 /* pseudo-device attachment does not print name */ 230 printf("%s", self->dv_xname); 231 #if 0 /* XXX can't do it yet because pseudo-devices don't get aux */ 232 struct ir_attach_args ia; 233 234 ia.ia_methods = &irframet_methods; 235 ia.ia_handle = aux->xxx; 236 237 irframe_attach(parent, self, &ia); 238 #endif 239 } 240 241 static int 242 irframet_detach(struct device *dev, int flags) 243 { 244 245 return (irframe_detach(dev, flags)); 246 } 247 248 /* 249 * Line specific open routine for async tty devices. 250 * Attach the given tty to the first available irframe unit. 251 * Called from device open routine or ttioctl. 252 */ 253 /* ARGSUSED */ 254 int 255 irframetopen(dev_t dev, struct tty *tp) 256 { 257 struct lwp *l = curlwp; /* XXX */ 258 struct irframet_softc *sc; 259 int error, s; 260 struct cfdata *cfdata; 261 struct ir_attach_args ia; 262 263 DPRINTF(("%s\n", __FUNCTION__)); 264 265 if ((error = kauth_authorize_device_tty(l->l_cred, 266 KAUTH_DEVICE_TTY_OPEN, tp))) 267 return (error); 268 269 s = spltty(); 270 271 DPRINTF(("%s: linesw=%p disc=%s\n", __FUNCTION__, tp->t_linesw, 272 tp->t_linesw->l_name)); 273 if (tp->t_linesw == &irframet_disc) { 274 sc = (struct irframet_softc *)tp->t_sc; 275 DPRINTF(("%s: sc=%p sc_tp=%p\n", __FUNCTION__, sc, sc->sc_tp)); 276 if (sc != NULL) { 277 splx(s); 278 return (EBUSY); 279 } 280 } 281 282 cfdata = malloc(sizeof(struct cfdata), M_DEVBUF, M_WAITOK); 283 cfdata->cf_name = "irframe"; 284 cfdata->cf_atname = "irframet"; 285 cfdata->cf_fstate = FSTATE_STAR; 286 cfdata->cf_unit = 0; 287 sc = (struct irframet_softc *)config_attach_pseudo(cfdata); 288 289 /* XXX should be done in irframet_attach() */ 290 ia.ia_methods = &irframet_methods; 291 ia.ia_handle = tp; 292 irframe_attach(0, (struct device *)sc, &ia); 293 294 tp->t_sc = sc; 295 sc->sc_tp = tp; 296 printf("%s attached at tty%02d\n", sc->sc_irp.sc_dev.dv_xname, 297 minor(tp->t_dev)); 298 299 DPRINTF(("%s: set sc=%p\n", __FUNCTION__, sc)); 300 301 ttyflush(tp, FREAD | FWRITE); 302 303 sc->sc_dongle = DONGLE_NONE; 304 sc->sc_dongle_private = 0; 305 306 splx(s); 307 308 return (0); 309 } 310 311 /* 312 * Line specific close routine, called from device close routine 313 * and from ttioctl. 314 * Detach the tty from the irframe unit. 315 * Mimics part of ttyclose(). 316 */ 317 int 318 irframetclose(struct tty *tp, int flag) 319 { 320 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 321 int s; 322 struct cfdata *cfdata; 323 324 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 325 326 s = spltty(); 327 ttyflush(tp, FREAD | FWRITE); 328 ttyldisc_release(tp->t_linesw); 329 tp->t_linesw = ttyldisc_default(); 330 if (sc != NULL) { 331 tp->t_sc = NULL; 332 printf("%s detached from tty%02d\n", sc->sc_irp.sc_dev.dv_xname, 333 minor(tp->t_dev)); 334 335 if (sc->sc_tp == tp) { 336 cfdata = sc->sc_irp.sc_dev.dv_cfdata; 337 config_detach(&sc->sc_irp.sc_dev, 0); 338 free(cfdata, M_DEVBUF); 339 } 340 } 341 splx(s); 342 return (0); 343 } 344 345 /* 346 * Line specific (tty) ioctl routine. 347 * This discipline requires that tty device drivers call 348 * the line specific l_ioctl routine from their ioctl routines. 349 */ 350 /* ARGSUSED */ 351 int 352 irframetioctl(struct tty *tp, u_long cmd, void *data, int flag, 353 struct lwp *l) 354 { 355 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 356 int error; 357 int d; 358 359 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 360 361 if (sc == NULL || tp != sc->sc_tp) 362 return (EPASSTHROUGH); 363 364 error = 0; 365 switch (cmd) { 366 case IRFRAMETTY_GET_DEVICE: 367 *(int *)data = device_unit(&sc->sc_irp.sc_dev); 368 break; 369 case IRFRAMETTY_GET_DONGLE: 370 *(int *)data = sc->sc_dongle; 371 break; 372 case IRFRAMETTY_SET_DONGLE: 373 d = *(int *)data; 374 if (d < 0 || d >= DONGLE_MAX) 375 return (EINVAL); 376 sc->sc_dongle = d; 377 break; 378 default: 379 error = EPASSTHROUGH; 380 break; 381 } 382 383 return (error); 384 } 385 386 /* 387 * Start output on async tty interface. 388 */ 389 int 390 irframetstart(struct tty *tp) 391 { 392 /*struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc;*/ 393 int s; 394 395 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 396 397 s = spltty(); 398 if (tp->t_oproc != NULL) 399 (*tp->t_oproc)(tp); 400 splx(s); 401 402 return (0); 403 } 404 405 void 406 irt_frame(struct irframet_softc *sc, u_char *tbuf, u_int len) 407 { 408 DPRINTF(("%s: nframe=%d framei=%d frameo=%d\n", 409 __FUNCTION__, sc->sc_nframes, sc->sc_framei, sc->sc_frameo)); 410 411 if (sc->sc_inbuf == NULL) /* XXX happens if device is closed? */ 412 return; 413 if (sc->sc_nframes >= MAXFRAMES) { 414 #ifdef IRFRAMET_DEBUG 415 printf("%s: dropped frame\n", __FUNCTION__); 416 #endif 417 return; 418 } 419 if (sc->sc_frames[sc->sc_framei].buf == NULL) 420 return; 421 memcpy(sc->sc_frames[sc->sc_framei].buf, tbuf, len); 422 sc->sc_frames[sc->sc_framei].len = len; 423 sc->sc_framei = (sc->sc_framei+1) % MAXFRAMES; 424 sc->sc_nframes++; 425 if (sc->sc_state & IRT_RSLP) { 426 sc->sc_state &= ~IRT_RSLP; 427 DPRINTF(("%s: waking up reader\n", __FUNCTION__)); 428 wakeup(sc->sc_frames); 429 } 430 selnotify(&sc->sc_rsel, 0); 431 } 432 433 void 434 irt_timeout(void *v) 435 { 436 struct irframet_softc *sc = v; 437 438 #ifdef IRFRAMET_DEBUG 439 if (sc->sc_framestate != FRAME_OUTSIDE) 440 printf("%s: input frame timeout\n", __FUNCTION__); 441 #endif 442 sc->sc_framestate = FRAME_OUTSIDE; 443 } 444 445 int 446 irframetinput(int c, struct tty *tp) 447 { 448 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 449 450 c &= 0xff; 451 452 #if IRFRAMET_DEBUG 453 if (irframetdebug > 1) 454 DPRINTF(("%s: tp=%p c=0x%02x\n", __FUNCTION__, tp, c)); 455 #endif 456 457 if (sc == NULL || tp != (struct tty *)sc->sc_tp) 458 return (0); 459 460 if (sc->sc_inbuf == NULL) 461 return (0); 462 463 switch (c) { 464 case SIR_BOF: 465 DPRINTF(("%s: BOF\n", __FUNCTION__)); 466 sc->sc_framestate = FRAME_INSIDE; 467 sc->sc_inchars = 0; 468 sc->sc_inFCS = INITFCS; 469 break; 470 case SIR_EOF: 471 DPRINTF(("%s: EOF state=%d inchars=%d fcs=0x%04x\n", 472 __FUNCTION__, 473 sc->sc_framestate, sc->sc_inchars, sc->sc_inFCS)); 474 if (sc->sc_framestate == FRAME_INSIDE && 475 sc->sc_inchars >= 4 && sc->sc_inFCS == GOODFCS) { 476 irt_frame(sc, sc->sc_inbuf, sc->sc_inchars - 2); 477 } else if (sc->sc_framestate != FRAME_OUTSIDE) { 478 #ifdef IRFRAMET_DEBUG 479 printf("%s: malformed input frame\n", __FUNCTION__); 480 #endif 481 } 482 sc->sc_framestate = FRAME_OUTSIDE; 483 break; 484 case SIR_CE: 485 DPRINTF(("%s: CE\n", __FUNCTION__)); 486 if (sc->sc_framestate == FRAME_INSIDE) 487 sc->sc_framestate = FRAME_ESCAPE; 488 break; 489 default: 490 #if IRFRAMET_DEBUG 491 if (irframetdebug > 1) 492 DPRINTF(("%s: c=0x%02x, inchar=%d state=%d\n", __FUNCTION__, c, 493 sc->sc_inchars, sc->sc_state)); 494 #endif 495 if (sc->sc_framestate != FRAME_OUTSIDE) { 496 if (sc->sc_framestate == FRAME_ESCAPE) { 497 sc->sc_framestate = FRAME_INSIDE; 498 c ^= SIR_ESC_BIT; 499 } 500 if (sc->sc_inchars < sc->sc_params.maxsize + 2) { 501 sc->sc_inbuf[sc->sc_inchars++] = c; 502 sc->sc_inFCS = updateFCS(sc->sc_inFCS, c); 503 } else { 504 sc->sc_framestate = FRAME_OUTSIDE; 505 #ifdef IRFRAMET_DEBUG 506 printf("%s: input frame overrun\n", 507 __FUNCTION__); 508 #endif 509 } 510 } 511 break; 512 } 513 514 #if 1 515 if (sc->sc_framestate != FRAME_OUTSIDE) { 516 callout_reset(&sc->sc_timeout, hz/20, irt_timeout, sc); 517 } 518 #endif 519 520 return (0); 521 } 522 523 524 /*** irframe methods ***/ 525 526 int 527 irframet_open(void *h, int flag, int mode, 528 struct lwp *l) 529 { 530 struct tty *tp = h; 531 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 532 533 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 534 535 sc->sc_params.speed = 0; 536 sc->sc_params.ebofs = IRDA_DEFAULT_EBOFS; 537 sc->sc_params.maxsize = 0; 538 sc->sc_framestate = FRAME_OUTSIDE; 539 sc->sc_nframes = 0; 540 sc->sc_framei = 0; 541 sc->sc_frameo = 0; 542 callout_init(&sc->sc_timeout, 0); 543 lockinit(&sc->sc_wr_lk, PZERO, "irfrtl", 0, 0); 544 545 return (0); 546 } 547 548 int 549 irframet_close(void *h, int flag, int mode, 550 struct lwp *l) 551 { 552 struct tty *tp = h; 553 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 554 int i, s; 555 556 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 557 558 callout_stop(&sc->sc_timeout); 559 s = splir(); 560 if (sc->sc_inbuf != NULL) { 561 free(sc->sc_inbuf, M_DEVBUF); 562 sc->sc_inbuf = NULL; 563 } 564 for (i = 0; i < MAXFRAMES; i++) { 565 if (sc->sc_frames[i].buf != NULL) { 566 free(sc->sc_frames[i].buf, M_DEVBUF); 567 sc->sc_frames[i].buf = NULL; 568 } 569 } 570 splx(s); 571 572 return (0); 573 } 574 575 int 576 irframet_read(void *h, struct uio *uio, int flag) 577 { 578 struct tty *tp = h; 579 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 580 int error = 0; 581 int s; 582 583 DPRINTF(("%s: resid=%zd, iovcnt=%d, offset=%ld\n", 584 __FUNCTION__, uio->uio_resid, uio->uio_iovcnt, 585 (long)uio->uio_offset)); 586 DPRINTF(("%s: nframe=%d framei=%d frameo=%d\n", 587 __FUNCTION__, sc->sc_nframes, sc->sc_framei, sc->sc_frameo)); 588 589 590 s = splir(); 591 while (sc->sc_nframes == 0) { 592 if (flag & IO_NDELAY) { 593 splx(s); 594 return (EWOULDBLOCK); 595 } 596 sc->sc_state |= IRT_RSLP; 597 DPRINTF(("%s: sleep\n", __FUNCTION__)); 598 error = tsleep(sc->sc_frames, PZERO | PCATCH, "irtrd", 0); 599 DPRINTF(("%s: woke, error=%d\n", __FUNCTION__, error)); 600 if (error) { 601 sc->sc_state &= ~IRT_RSLP; 602 break; 603 } 604 } 605 606 /* Do just one frame transfer per read */ 607 if (!error) { 608 if (uio->uio_resid < sc->sc_frames[sc->sc_frameo].len) { 609 DPRINTF(("%s: uio buffer smaller than frame size " 610 "(%zd < %d)\n", __FUNCTION__, uio->uio_resid, 611 sc->sc_frames[sc->sc_frameo].len)); 612 error = EINVAL; 613 } else { 614 DPRINTF(("%s: moving %d bytes\n", __FUNCTION__, 615 sc->sc_frames[sc->sc_frameo].len)); 616 error = uiomove(sc->sc_frames[sc->sc_frameo].buf, 617 sc->sc_frames[sc->sc_frameo].len, uio); 618 DPRINTF(("%s: error=%d\n", __FUNCTION__, error)); 619 } 620 sc->sc_frameo = (sc->sc_frameo+1) % MAXFRAMES; 621 sc->sc_nframes--; 622 } 623 splx(s); 624 625 return (error); 626 } 627 628 int 629 irt_putc(struct tty *tp, int c) 630 { 631 int error; 632 633 #if IRFRAMET_DEBUG 634 if (irframetdebug > 3) 635 DPRINTF(("%s: tp=%p c=0x%02x cc=%d\n", __FUNCTION__, tp, c, 636 tp->t_outq.c_cc)); 637 #endif 638 if (tp->t_outq.c_cc > tp->t_hiwat) { 639 irframetstart(tp); 640 mutex_spin_enter(&tty_lock); 641 /* 642 * This can only occur if FLUSHO is set in t_lflag, 643 * or if ttstart/oproc is synchronous (or very fast). 644 */ 645 if (tp->t_outq.c_cc <= tp->t_hiwat) { 646 mutex_spin_exit(&tty_lock); 647 goto go; 648 } 649 SET(tp->t_state, TS_ASLEEP); 650 error = ttysleep(tp, &tp->t_outq.c_cv, true, 0); 651 mutex_spin_exit(&tty_lock); 652 if (error) 653 return (error); 654 } 655 go: 656 if (putc(c, &tp->t_outq) < 0) { 657 printf("irframe: putc failed\n"); 658 return (EIO); 659 } 660 return (0); 661 } 662 663 int 664 irframet_write(void *h, struct uio *uio, int flag) 665 { 666 struct tty *tp = h; 667 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 668 int n; 669 670 DPRINTF(("%s: resid=%zd, iovcnt=%d, offset=%ld\n", 671 __FUNCTION__, uio->uio_resid, uio->uio_iovcnt, 672 (long)uio->uio_offset)); 673 674 n = irda_sir_frame(sc->sc_buffer, sizeof(sc->sc_buffer), uio, 675 sc->sc_params.ebofs); 676 if (n < 0) { 677 #ifdef IRFRAMET_DEBUG 678 printf("%s: irda_sir_frame() error=%d\n", __FUNCTION__, -n); 679 #endif 680 return (-n); 681 } 682 return (irt_write_frame(tp, sc->sc_buffer, n)); 683 } 684 685 int 686 irt_write_frame(struct tty *tp, u_int8_t *tbuf, size_t len) 687 { 688 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 689 int error, i; 690 691 DPRINTF(("%s: tp=%p len=%zd\n", __FUNCTION__, tp, len)); 692 693 lockmgr(&sc->sc_wr_lk, LK_EXCLUSIVE, NULL); 694 error = 0; 695 for (i = 0; !error && i < len; i++) 696 error = irt_putc(tp, tbuf[i]); 697 lockmgr(&sc->sc_wr_lk, LK_RELEASE, NULL); 698 699 irframetstart(tp); 700 701 DPRINTF(("%s: done, error=%d\n", __FUNCTION__, error)); 702 703 return (error); 704 } 705 706 int 707 irframet_poll(void *h, int events, struct lwp *l) 708 { 709 struct tty *tp = h; 710 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 711 int revents = 0; 712 int s; 713 714 DPRINTF(("%s: sc=%p\n", __FUNCTION__, sc)); 715 716 s = splir(); 717 /* XXX is this a good check? */ 718 if (events & (POLLOUT | POLLWRNORM)) 719 if (tp->t_outq.c_cc <= tp->t_lowat) 720 revents |= events & (POLLOUT | POLLWRNORM); 721 722 if (events & (POLLIN | POLLRDNORM)) { 723 if (sc->sc_nframes > 0) { 724 DPRINTF(("%s: have data\n", __FUNCTION__)); 725 revents |= events & (POLLIN | POLLRDNORM); 726 } else { 727 DPRINTF(("%s: recording select\n", __FUNCTION__)); 728 selrecord(l, &sc->sc_rsel); 729 } 730 } 731 splx(s); 732 733 return (revents); 734 } 735 736 static void 737 filt_irframetrdetach(struct knote *kn) 738 { 739 struct tty *tp = kn->kn_hook; 740 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 741 int s; 742 743 s = splir(); 744 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 745 splx(s); 746 } 747 748 static int 749 filt_irframetread(struct knote *kn, long hint) 750 { 751 struct tty *tp = kn->kn_hook; 752 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 753 754 kn->kn_data = sc->sc_nframes; 755 return (kn->kn_data > 0); 756 } 757 758 static void 759 filt_irframetwdetach(struct knote *kn) 760 { 761 struct tty *tp = kn->kn_hook; 762 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 763 int s; 764 765 s = splir(); 766 SLIST_REMOVE(&sc->sc_wsel.sel_klist, kn, knote, kn_selnext); 767 splx(s); 768 } 769 770 static int 771 filt_irframetwrite(struct knote *kn, long hint) 772 { 773 struct tty *tp = kn->kn_hook; 774 775 /* XXX double-check this */ 776 777 if (tp->t_outq.c_cc <= tp->t_lowat) { 778 kn->kn_data = tp->t_lowat - tp->t_outq.c_cc; 779 return (1); 780 } 781 782 kn->kn_data = 0; 783 return (0); 784 } 785 786 static const struct filterops irframetread_filtops = 787 { 1, NULL, filt_irframetrdetach, filt_irframetread }; 788 static const struct filterops irframetwrite_filtops = 789 { 1, NULL, filt_irframetwdetach, filt_irframetwrite }; 790 791 int 792 irframet_kqfilter(void *h, struct knote *kn) 793 { 794 struct tty *tp = h; 795 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 796 struct klist *klist; 797 int s; 798 799 switch (kn->kn_filter) { 800 case EVFILT_READ: 801 klist = &sc->sc_rsel.sel_klist; 802 kn->kn_fop = &irframetread_filtops; 803 break; 804 case EVFILT_WRITE: 805 klist = &sc->sc_wsel.sel_klist; 806 kn->kn_fop = &irframetwrite_filtops; 807 break; 808 default: 809 return (1); 810 } 811 812 kn->kn_hook = tp; 813 814 s = splir(); 815 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 816 splx(s); 817 818 return (0); 819 } 820 821 int 822 irframet_set_params(void *h, struct irda_params *p) 823 { 824 struct tty *tp = h; 825 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 826 int i; 827 828 DPRINTF(("%s: tp=%p speed=%d ebofs=%d maxsize=%d\n", 829 __FUNCTION__, tp, p->speed, p->ebofs, p->maxsize)); 830 831 if (p->speed != sc->sc_params.speed) { 832 /* Checked in irframe.c */ 833 lockmgr(&sc->sc_wr_lk, LK_EXCLUSIVE, NULL); 834 irt_dongles[sc->sc_dongle].setspeed(tp, p->speed); 835 lockmgr(&sc->sc_wr_lk, LK_RELEASE, NULL); 836 sc->sc_params.speed = p->speed; 837 } 838 839 /* Max size checked in irframe.c */ 840 sc->sc_params.ebofs = p->ebofs; 841 /* Max size checked in irframe.c */ 842 if (sc->sc_params.maxsize != p->maxsize) { 843 sc->sc_params.maxsize = p->maxsize; 844 if (sc->sc_inbuf != NULL) 845 free(sc->sc_inbuf, M_DEVBUF); 846 for (i = 0; i < MAXFRAMES; i++) 847 if (sc->sc_frames[i].buf != NULL) 848 free(sc->sc_frames[i].buf, M_DEVBUF); 849 if (sc->sc_params.maxsize != 0) { 850 sc->sc_inbuf = malloc(sc->sc_params.maxsize+2, 851 M_DEVBUF, M_WAITOK); 852 for (i = 0; i < MAXFRAMES; i++) 853 sc->sc_frames[i].buf = 854 malloc(sc->sc_params.maxsize, 855 M_DEVBUF, M_WAITOK); 856 } else { 857 sc->sc_inbuf = NULL; 858 for (i = 0; i < MAXFRAMES; i++) 859 sc->sc_frames[i].buf = NULL; 860 } 861 } 862 sc->sc_framestate = FRAME_OUTSIDE; 863 864 return (0); 865 } 866 867 int 868 irframet_get_speeds(void *h, int *speeds) 869 { 870 struct tty *tp = h; 871 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 872 873 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 874 875 if (sc == NULL) /* during attach */ 876 *speeds = IRDA_SPEEDS_SIR; 877 else 878 *speeds = irt_dongles[sc->sc_dongle].speedmask; 879 return (0); 880 } 881 882 int 883 irframet_get_turnarounds(void *h, int *turnarounds) 884 { 885 struct tty *tp = h; 886 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 887 888 DPRINTF(("%s: tp=%p\n", __FUNCTION__, tp)); 889 890 *turnarounds = irt_dongles[sc->sc_dongle].turnmask; 891 return (0); 892 } 893 894 void 895 irt_ioctl(struct tty *tp, u_long cmd, void *arg) 896 { 897 const struct cdevsw *cdev; 898 int error; 899 dev_t dev; 900 901 dev = tp->t_dev; 902 cdev = cdevsw_lookup(dev); 903 if (cdev != NULL) 904 error = (*cdev->d_ioctl)(dev, cmd, arg, 0, curlwp); 905 else 906 error = ENXIO; 907 #ifdef DIAGNOSTIC 908 if (error) 909 printf("irt_ioctl: cmd=0x%08lx error=%d\n", cmd, error); 910 #endif 911 } 912 913 void 914 irt_setspeed(struct tty *tp, u_int speed) 915 { 916 struct termios tt; 917 918 irt_ioctl(tp, TIOCGETA, &tt); 919 tt.c_ispeed = tt.c_ospeed = speed; 920 tt.c_cflag &= ~HUPCL; 921 tt.c_cflag |= CLOCAL; 922 irt_ioctl(tp, TIOCSETAF, &tt); 923 } 924 925 void 926 irt_setline(struct tty *tp, u_int line) 927 { 928 int mline; 929 930 irt_ioctl(tp, TIOCMGET, &mline); 931 mline &= ~(TIOCM_DTR | TIOCM_RTS); 932 mline |= line; 933 irt_ioctl(tp, TIOCMSET, (void *)&mline); 934 } 935 936 void 937 irt_delay(struct tty *tp, u_int ms) 938 { 939 if (cold) 940 delay(ms * 1000); 941 else 942 tsleep(&irt_delay, PZERO, "irtdly", ms * hz / 1000 + 1); 943 944 } 945 946 /********************************************************************** 947 * No dongle 948 **********************************************************************/ 949 void 950 irts_none(struct tty *tp, u_int speed) 951 { 952 irt_setspeed(tp, speed); 953 } 954 955 /********************************************************************** 956 * Tekram 957 **********************************************************************/ 958 #define TEKRAM_PW 0x10 959 960 #define TEKRAM_115200 (TEKRAM_PW|0x00) 961 #define TEKRAM_57600 (TEKRAM_PW|0x01) 962 #define TEKRAM_38400 (TEKRAM_PW|0x02) 963 #define TEKRAM_19200 (TEKRAM_PW|0x03) 964 #define TEKRAM_9600 (TEKRAM_PW|0x04) 965 #define TEKRAM_2400 (TEKRAM_PW|0x08) 966 967 #define TEKRAM_TV (TEKRAM_PW|0x05) 968 969 void 970 irts_tekram(struct tty *tp, u_int speed) 971 { 972 int s; 973 974 irt_setspeed(tp, 9600); 975 irt_setline(tp, 0); 976 irt_delay(tp, 50); 977 978 irt_setline(tp, TIOCM_RTS); 979 irt_delay(tp, 1); 980 981 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 982 irt_delay(tp, 1); /* 50 us */ 983 984 irt_setline(tp, TIOCM_DTR); 985 irt_delay(tp, 1); /* 7 us */ 986 987 switch(speed) { 988 case 115200: s = TEKRAM_115200; break; 989 case 57600: s = TEKRAM_57600; break; 990 case 38400: s = TEKRAM_38400; break; 991 case 19200: s = TEKRAM_19200; break; 992 case 2400: s = TEKRAM_2400; break; 993 default: s = TEKRAM_9600; break; 994 } 995 irt_putc(tp, s); 996 irframetstart(tp); 997 998 irt_delay(tp, 100); 999 1000 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1001 if (speed != 9600) 1002 irt_setspeed(tp, speed); 1003 irt_delay(tp, 1); /* 50 us */ 1004 } 1005 1006 /********************************************************************** 1007 * Jeteye 1008 **********************************************************************/ 1009 void 1010 irts_jeteye(struct tty *tp, u_int speed) 1011 { 1012 switch (speed) { 1013 case 19200: 1014 irt_setline(tp, TIOCM_DTR); 1015 break; 1016 case 115200: 1017 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1018 break; 1019 default: /*9600*/ 1020 irt_setline(tp, TIOCM_RTS); 1021 break; 1022 } 1023 irt_setspeed(tp, speed); 1024 } 1025 1026 /********************************************************************** 1027 * Actisys 1028 **********************************************************************/ 1029 void 1030 irts_actisys(struct tty *tp, u_int speed) 1031 { 1032 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 1033 int pulses; 1034 1035 irt_setspeed(tp, speed); 1036 1037 switch(speed) { 1038 case 19200: pulses=1; break; 1039 case 57600: pulses=2; break; 1040 case 115200: pulses=3; break; 1041 case 38400: pulses=4; break; 1042 default: /* 9600 */ pulses=0; break; 1043 } 1044 1045 if (sc->sc_dongle_private == 0) { 1046 sc->sc_dongle_private = 1; 1047 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1048 /* 1049 * Must wait at least 50ms after initial 1050 * power on to charge internal capacitor 1051 */ 1052 irt_delay(tp, 50); 1053 } 1054 irt_setline(tp, TIOCM_RTS); 1055 delay(2); 1056 for (;;) { 1057 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1058 delay(2); 1059 if (--pulses <= 0) 1060 break; 1061 irt_setline(tp, TIOCM_DTR); 1062 delay(2); 1063 } 1064 } 1065 1066 /********************************************************************** 1067 * Litelink 1068 **********************************************************************/ 1069 void 1070 irts_litelink(struct tty *tp, u_int speed) 1071 { 1072 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 1073 int pulses; 1074 1075 irt_setspeed(tp, speed); 1076 1077 switch(speed) { 1078 case 57600: pulses=1; break; 1079 case 38400: pulses=2; break; 1080 case 19200: pulses=3; break; 1081 case 9600: pulses=4; break; 1082 default: /* 115200 */ pulses=0; break; 1083 } 1084 1085 if (sc->sc_dongle_private == 0) { 1086 sc->sc_dongle_private = 1; 1087 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1088 } 1089 irt_setline(tp, TIOCM_RTS); 1090 irt_delay(tp, 1); /* 15 us */; 1091 for (;;) { 1092 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1093 irt_delay(tp, 1); /* 15 us */; 1094 if (--pulses <= 0) 1095 break; 1096 irt_setline(tp, TIOCM_DTR); 1097 irt_delay(tp, 1); /* 15 us */; 1098 } 1099 } 1100 1101 /********************************************************************** 1102 * Girbil 1103 **********************************************************************/ 1104 /* Control register 1 */ 1105 #define GIRBIL_TXEN 0x01 /* Enable transmitter */ 1106 #define GIRBIL_RXEN 0x02 /* Enable receiver */ 1107 #define GIRBIL_ECAN 0x04 /* Cancel self emmited data */ 1108 #define GIRBIL_ECHO 0x08 /* Echo control characters */ 1109 1110 /* LED Current Register */ 1111 #define GIRBIL_HIGH 0x20 1112 #define GIRBIL_MEDIUM 0x21 1113 #define GIRBIL_LOW 0x22 1114 1115 /* Baud register */ 1116 #define GIRBIL_2400 0x30 1117 #define GIRBIL_4800 0x31 1118 #define GIRBIL_9600 0x32 1119 #define GIRBIL_19200 0x33 1120 #define GIRBIL_38400 0x34 1121 #define GIRBIL_57600 0x35 1122 #define GIRBIL_115200 0x36 1123 1124 /* Mode register */ 1125 #define GIRBIL_IRDA 0x40 1126 #define GIRBIL_ASK 0x41 1127 1128 /* Control register 2 */ 1129 #define GIRBIL_LOAD 0x51 /* Load the new baud rate value */ 1130 1131 void 1132 irts_girbil(struct tty *tp, u_int speed) 1133 { 1134 int s; 1135 1136 irt_setspeed(tp, 9600); 1137 irt_setline(tp, TIOCM_DTR); 1138 irt_delay(tp, 5); 1139 irt_setline(tp, TIOCM_RTS); 1140 irt_delay(tp, 20); 1141 switch(speed) { 1142 case 115200: s = GIRBIL_115200; break; 1143 case 57600: s = GIRBIL_57600; break; 1144 case 38400: s = GIRBIL_38400; break; 1145 case 19200: s = GIRBIL_19200; break; 1146 case 4800: s = GIRBIL_4800; break; 1147 case 2400: s = GIRBIL_2400; break; 1148 default: s = GIRBIL_9600; break; 1149 } 1150 irt_putc(tp, GIRBIL_TXEN|GIRBIL_RXEN); 1151 irt_putc(tp, s); 1152 irt_putc(tp, GIRBIL_LOAD); 1153 irframetstart(tp); 1154 irt_delay(tp, 100); 1155 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1156 if (speed != 9600) 1157 irt_setspeed(tp, speed); 1158 } 1159
Indexes created Tue Sep 30 07:10:03 GMT 2025