irframe_tty.c revision 1.50
1 /* $NetBSD: irframe_tty.c,v 1.50 2007/12/15 00:39:28 perry 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 1.50 2007/12/15 00:39:28 perry 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/mutex.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 kmutex_t 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", __func__)); 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", __func__, 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", __func__, 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", __func__, sc)); 300 301 mutex_spin_enter(&tty_lock); 302 ttyflush(tp, FREAD | FWRITE); 303 mutex_spin_exit(&tty_lock); 304 305 sc->sc_dongle = DONGLE_NONE; 306 sc->sc_dongle_private = 0; 307 308 splx(s); 309 310 return (0); 311 } 312 313 /* 314 * Line specific close routine, called from device close routine 315 * and from ttioctl. 316 * Detach the tty from the irframe unit. 317 * Mimics part of ttyclose(). 318 */ 319 int 320 irframetclose(struct tty *tp, int flag) 321 { 322 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 323 int s; 324 struct cfdata *cfdata; 325 326 DPRINTF(("%s: tp=%p\n", __func__, tp)); 327 328 s = spltty(); 329 mutex_spin_enter(&tty_lock); 330 ttyflush(tp, FREAD | FWRITE); 331 mutex_spin_exit(&tty_lock); /* XXX */ 332 ttyldisc_release(tp->t_linesw); 333 tp->t_linesw = ttyldisc_default(); 334 if (sc != NULL) { 335 tp->t_sc = NULL; 336 printf("%s detached from tty%02d\n", sc->sc_irp.sc_dev.dv_xname, 337 minor(tp->t_dev)); 338 339 if (sc->sc_tp == tp) { 340 cfdata = sc->sc_irp.sc_dev.dv_cfdata; 341 config_detach(&sc->sc_irp.sc_dev, 0); 342 free(cfdata, M_DEVBUF); 343 } 344 } 345 splx(s); 346 return (0); 347 } 348 349 /* 350 * Line specific (tty) ioctl routine. 351 * This discipline requires that tty device drivers call 352 * the line specific l_ioctl routine from their ioctl routines. 353 */ 354 /* ARGSUSED */ 355 int 356 irframetioctl(struct tty *tp, u_long cmd, void *data, int flag, 357 struct lwp *l) 358 { 359 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 360 int error; 361 int d; 362 363 DPRINTF(("%s: tp=%p\n", __func__, tp)); 364 365 if (sc == NULL || tp != sc->sc_tp) 366 return (EPASSTHROUGH); 367 368 error = 0; 369 switch (cmd) { 370 case IRFRAMETTY_GET_DEVICE: 371 *(int *)data = device_unit(&sc->sc_irp.sc_dev); 372 break; 373 case IRFRAMETTY_GET_DONGLE: 374 *(int *)data = sc->sc_dongle; 375 break; 376 case IRFRAMETTY_SET_DONGLE: 377 d = *(int *)data; 378 if (d < 0 || d >= DONGLE_MAX) 379 return (EINVAL); 380 sc->sc_dongle = d; 381 break; 382 default: 383 error = EPASSTHROUGH; 384 break; 385 } 386 387 return (error); 388 } 389 390 /* 391 * Start output on async tty interface. 392 */ 393 int 394 irframetstart(struct tty *tp) 395 { 396 /*struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc;*/ 397 int s; 398 399 DPRINTF(("%s: tp=%p\n", __func__, tp)); 400 401 s = spltty(); 402 if (tp->t_oproc != NULL) 403 (*tp->t_oproc)(tp); 404 splx(s); 405 406 return (0); 407 } 408 409 void 410 irt_frame(struct irframet_softc *sc, u_char *tbuf, u_int len) 411 { 412 DPRINTF(("%s: nframe=%d framei=%d frameo=%d\n", 413 __func__, sc->sc_nframes, sc->sc_framei, sc->sc_frameo)); 414 415 if (sc->sc_inbuf == NULL) /* XXX happens if device is closed? */ 416 return; 417 if (sc->sc_nframes >= MAXFRAMES) { 418 #ifdef IRFRAMET_DEBUG 419 printf("%s: dropped frame\n", __func__); 420 #endif 421 return; 422 } 423 if (sc->sc_frames[sc->sc_framei].buf == NULL) 424 return; 425 memcpy(sc->sc_frames[sc->sc_framei].buf, tbuf, len); 426 sc->sc_frames[sc->sc_framei].len = len; 427 sc->sc_framei = (sc->sc_framei+1) % MAXFRAMES; 428 sc->sc_nframes++; 429 if (sc->sc_state & IRT_RSLP) { 430 sc->sc_state &= ~IRT_RSLP; 431 DPRINTF(("%s: waking up reader\n", __func__)); 432 wakeup(sc->sc_frames); 433 } 434 selnotify(&sc->sc_rsel, 0); 435 } 436 437 void 438 irt_timeout(void *v) 439 { 440 struct irframet_softc *sc = v; 441 442 #ifdef IRFRAMET_DEBUG 443 if (sc->sc_framestate != FRAME_OUTSIDE) 444 printf("%s: input frame timeout\n", __func__); 445 #endif 446 sc->sc_framestate = FRAME_OUTSIDE; 447 } 448 449 int 450 irframetinput(int c, struct tty *tp) 451 { 452 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 453 454 c &= 0xff; 455 456 #if IRFRAMET_DEBUG 457 if (irframetdebug > 1) 458 DPRINTF(("%s: tp=%p c=0x%02x\n", __func__, tp, c)); 459 #endif 460 461 if (sc == NULL || tp != (struct tty *)sc->sc_tp) 462 return (0); 463 464 if (sc->sc_inbuf == NULL) 465 return (0); 466 467 switch (c) { 468 case SIR_BOF: 469 DPRINTF(("%s: BOF\n", __func__)); 470 sc->sc_framestate = FRAME_INSIDE; 471 sc->sc_inchars = 0; 472 sc->sc_inFCS = INITFCS; 473 break; 474 case SIR_EOF: 475 DPRINTF(("%s: EOF state=%d inchars=%d fcs=0x%04x\n", 476 __func__, 477 sc->sc_framestate, sc->sc_inchars, sc->sc_inFCS)); 478 if (sc->sc_framestate == FRAME_INSIDE && 479 sc->sc_inchars >= 4 && sc->sc_inFCS == GOODFCS) { 480 irt_frame(sc, sc->sc_inbuf, sc->sc_inchars - 2); 481 } else if (sc->sc_framestate != FRAME_OUTSIDE) { 482 #ifdef IRFRAMET_DEBUG 483 printf("%s: malformed input frame\n", __func__); 484 #endif 485 } 486 sc->sc_framestate = FRAME_OUTSIDE; 487 break; 488 case SIR_CE: 489 DPRINTF(("%s: CE\n", __func__)); 490 if (sc->sc_framestate == FRAME_INSIDE) 491 sc->sc_framestate = FRAME_ESCAPE; 492 break; 493 default: 494 #if IRFRAMET_DEBUG 495 if (irframetdebug > 1) 496 DPRINTF(("%s: c=0x%02x, inchar=%d state=%d\n", __func__, c, 497 sc->sc_inchars, sc->sc_state)); 498 #endif 499 if (sc->sc_framestate != FRAME_OUTSIDE) { 500 if (sc->sc_framestate == FRAME_ESCAPE) { 501 sc->sc_framestate = FRAME_INSIDE; 502 c ^= SIR_ESC_BIT; 503 } 504 if (sc->sc_inchars < sc->sc_params.maxsize + 2) { 505 sc->sc_inbuf[sc->sc_inchars++] = c; 506 sc->sc_inFCS = updateFCS(sc->sc_inFCS, c); 507 } else { 508 sc->sc_framestate = FRAME_OUTSIDE; 509 #ifdef IRFRAMET_DEBUG 510 printf("%s: input frame overrun\n", 511 __func__); 512 #endif 513 } 514 } 515 break; 516 } 517 518 #if 1 519 if (sc->sc_framestate != FRAME_OUTSIDE) { 520 callout_reset(&sc->sc_timeout, hz/20, irt_timeout, sc); 521 } 522 #endif 523 524 return (0); 525 } 526 527 528 /*** irframe methods ***/ 529 530 int 531 irframet_open(void *h, int flag, int mode, 532 struct lwp *l) 533 { 534 struct tty *tp = h; 535 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 536 static bool again; 537 538 DPRINTF(("%s: tp=%p\n", __func__, tp)); 539 540 sc->sc_params.speed = 0; 541 sc->sc_params.ebofs = IRDA_DEFAULT_EBOFS; 542 sc->sc_params.maxsize = 0; 543 sc->sc_framestate = FRAME_OUTSIDE; 544 sc->sc_nframes = 0; 545 sc->sc_framei = 0; 546 sc->sc_frameo = 0; 547 548 /* XXX */ 549 if (!again) { 550 again = true; 551 callout_init(&sc->sc_timeout, 0); 552 mutex_init(&sc->sc_wr_lk, MUTEX_DEFAULT, IPL_NONE); 553 } 554 555 return (0); 556 } 557 558 int 559 irframet_close(void *h, int flag, int mode, 560 struct lwp *l) 561 { 562 struct tty *tp = h; 563 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 564 int i, s; 565 566 DPRINTF(("%s: tp=%p\n", __func__, tp)); 567 568 callout_stop(&sc->sc_timeout); 569 s = splir(); 570 if (sc->sc_inbuf != NULL) { 571 free(sc->sc_inbuf, M_DEVBUF); 572 sc->sc_inbuf = NULL; 573 } 574 for (i = 0; i < MAXFRAMES; i++) { 575 if (sc->sc_frames[i].buf != NULL) { 576 free(sc->sc_frames[i].buf, M_DEVBUF); 577 sc->sc_frames[i].buf = NULL; 578 } 579 } 580 splx(s); 581 582 return (0); 583 } 584 585 int 586 irframet_read(void *h, struct uio *uio, int flag) 587 { 588 struct tty *tp = h; 589 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 590 int error = 0; 591 int s; 592 593 DPRINTF(("%s: resid=%zd, iovcnt=%d, offset=%ld\n", 594 __func__, uio->uio_resid, uio->uio_iovcnt, 595 (long)uio->uio_offset)); 596 DPRINTF(("%s: nframe=%d framei=%d frameo=%d\n", 597 __func__, sc->sc_nframes, sc->sc_framei, sc->sc_frameo)); 598 599 600 s = splir(); 601 while (sc->sc_nframes == 0) { 602 if (flag & IO_NDELAY) { 603 splx(s); 604 return (EWOULDBLOCK); 605 } 606 sc->sc_state |= IRT_RSLP; 607 DPRINTF(("%s: sleep\n", __func__)); 608 error = tsleep(sc->sc_frames, PZERO | PCATCH, "irtrd", 0); 609 DPRINTF(("%s: woke, error=%d\n", __func__, error)); 610 if (error) { 611 sc->sc_state &= ~IRT_RSLP; 612 break; 613 } 614 } 615 616 /* Do just one frame transfer per read */ 617 if (!error) { 618 if (uio->uio_resid < sc->sc_frames[sc->sc_frameo].len) { 619 DPRINTF(("%s: uio buffer smaller than frame size " 620 "(%zd < %d)\n", __func__, uio->uio_resid, 621 sc->sc_frames[sc->sc_frameo].len)); 622 error = EINVAL; 623 } else { 624 DPRINTF(("%s: moving %d bytes\n", __func__, 625 sc->sc_frames[sc->sc_frameo].len)); 626 error = uiomove(sc->sc_frames[sc->sc_frameo].buf, 627 sc->sc_frames[sc->sc_frameo].len, uio); 628 DPRINTF(("%s: error=%d\n", __func__, error)); 629 } 630 sc->sc_frameo = (sc->sc_frameo+1) % MAXFRAMES; 631 sc->sc_nframes--; 632 } 633 splx(s); 634 635 return (error); 636 } 637 638 int 639 irt_putc(struct tty *tp, int c) 640 { 641 int error; 642 643 #if IRFRAMET_DEBUG 644 if (irframetdebug > 3) 645 DPRINTF(("%s: tp=%p c=0x%02x cc=%d\n", __func__, tp, c, 646 tp->t_outq.c_cc)); 647 #endif 648 if (tp->t_outq.c_cc > tp->t_hiwat) { 649 irframetstart(tp); 650 mutex_spin_enter(&tty_lock); 651 /* 652 * This can only occur if FLUSHO is set in t_lflag, 653 * or if ttstart/oproc is synchronous (or very fast). 654 */ 655 if (tp->t_outq.c_cc <= tp->t_hiwat) { 656 mutex_spin_exit(&tty_lock); 657 goto go; 658 } 659 error = ttysleep(tp, &tp->t_outq.c_cv, true, 0); 660 mutex_spin_exit(&tty_lock); 661 if (error) 662 return (error); 663 } 664 go: 665 if (putc(c, &tp->t_outq) < 0) { 666 printf("irframe: putc failed\n"); 667 return (EIO); 668 } 669 return (0); 670 } 671 672 int 673 irframet_write(void *h, struct uio *uio, int flag) 674 { 675 struct tty *tp = h; 676 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 677 int n; 678 679 DPRINTF(("%s: resid=%zd, iovcnt=%d, offset=%ld\n", 680 __func__, uio->uio_resid, uio->uio_iovcnt, 681 (long)uio->uio_offset)); 682 683 n = irda_sir_frame(sc->sc_buffer, sizeof(sc->sc_buffer), uio, 684 sc->sc_params.ebofs); 685 if (n < 0) { 686 #ifdef IRFRAMET_DEBUG 687 printf("%s: irda_sir_frame() error=%d\n", __func__, -n); 688 #endif 689 return (-n); 690 } 691 return (irt_write_frame(tp, sc->sc_buffer, n)); 692 } 693 694 int 695 irt_write_frame(struct tty *tp, u_int8_t *tbuf, size_t len) 696 { 697 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 698 int error, i; 699 700 DPRINTF(("%s: tp=%p len=%zd\n", __func__, tp, len)); 701 702 mutex_enter(&sc->sc_wr_lk); 703 error = 0; 704 for (i = 0; !error && i < len; i++) 705 error = irt_putc(tp, tbuf[i]); 706 mutex_exit(&sc->sc_wr_lk); 707 708 irframetstart(tp); 709 710 DPRINTF(("%s: done, error=%d\n", __func__, error)); 711 712 return (error); 713 } 714 715 int 716 irframet_poll(void *h, int events, struct lwp *l) 717 { 718 struct tty *tp = h; 719 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 720 int revents = 0; 721 int s; 722 723 DPRINTF(("%s: sc=%p\n", __func__, sc)); 724 725 s = splir(); 726 /* XXX is this a good check? */ 727 if (events & (POLLOUT | POLLWRNORM)) 728 if (tp->t_outq.c_cc <= tp->t_lowat) 729 revents |= events & (POLLOUT | POLLWRNORM); 730 731 if (events & (POLLIN | POLLRDNORM)) { 732 if (sc->sc_nframes > 0) { 733 DPRINTF(("%s: have data\n", __func__)); 734 revents |= events & (POLLIN | POLLRDNORM); 735 } else { 736 DPRINTF(("%s: recording select\n", __func__)); 737 selrecord(l, &sc->sc_rsel); 738 } 739 } 740 splx(s); 741 742 return (revents); 743 } 744 745 static void 746 filt_irframetrdetach(struct knote *kn) 747 { 748 struct tty *tp = kn->kn_hook; 749 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 750 int s; 751 752 s = splir(); 753 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 754 splx(s); 755 } 756 757 static int 758 filt_irframetread(struct knote *kn, long hint) 759 { 760 struct tty *tp = kn->kn_hook; 761 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 762 763 kn->kn_data = sc->sc_nframes; 764 return (kn->kn_data > 0); 765 } 766 767 static void 768 filt_irframetwdetach(struct knote *kn) 769 { 770 struct tty *tp = kn->kn_hook; 771 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 772 int s; 773 774 s = splir(); 775 SLIST_REMOVE(&sc->sc_wsel.sel_klist, kn, knote, kn_selnext); 776 splx(s); 777 } 778 779 static int 780 filt_irframetwrite(struct knote *kn, long hint) 781 { 782 struct tty *tp = kn->kn_hook; 783 784 /* XXX double-check this */ 785 786 if (tp->t_outq.c_cc <= tp->t_lowat) { 787 kn->kn_data = tp->t_lowat - tp->t_outq.c_cc; 788 return (1); 789 } 790 791 kn->kn_data = 0; 792 return (0); 793 } 794 795 static const struct filterops irframetread_filtops = 796 { 1, NULL, filt_irframetrdetach, filt_irframetread }; 797 static const struct filterops irframetwrite_filtops = 798 { 1, NULL, filt_irframetwdetach, filt_irframetwrite }; 799 800 int 801 irframet_kqfilter(void *h, struct knote *kn) 802 { 803 struct tty *tp = h; 804 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 805 struct klist *klist; 806 int s; 807 808 switch (kn->kn_filter) { 809 case EVFILT_READ: 810 klist = &sc->sc_rsel.sel_klist; 811 kn->kn_fop = &irframetread_filtops; 812 break; 813 case EVFILT_WRITE: 814 klist = &sc->sc_wsel.sel_klist; 815 kn->kn_fop = &irframetwrite_filtops; 816 break; 817 default: 818 return (EINVAL); 819 } 820 821 kn->kn_hook = tp; 822 823 s = splir(); 824 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 825 splx(s); 826 827 return (0); 828 } 829 830 int 831 irframet_set_params(void *h, struct irda_params *p) 832 { 833 struct tty *tp = h; 834 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 835 int i; 836 837 DPRINTF(("%s: tp=%p speed=%d ebofs=%d maxsize=%d\n", 838 __func__, tp, p->speed, p->ebofs, p->maxsize)); 839 840 if (p->speed != sc->sc_params.speed) { 841 /* Checked in irframe.c */ 842 mutex_enter(&sc->sc_wr_lk); 843 irt_dongles[sc->sc_dongle].setspeed(tp, p->speed); 844 mutex_exit(&sc->sc_wr_lk); 845 sc->sc_params.speed = p->speed; 846 } 847 848 /* Max size checked in irframe.c */ 849 sc->sc_params.ebofs = p->ebofs; 850 /* Max size checked in irframe.c */ 851 if (sc->sc_params.maxsize != p->maxsize) { 852 sc->sc_params.maxsize = p->maxsize; 853 if (sc->sc_inbuf != NULL) 854 free(sc->sc_inbuf, M_DEVBUF); 855 for (i = 0; i < MAXFRAMES; i++) 856 if (sc->sc_frames[i].buf != NULL) 857 free(sc->sc_frames[i].buf, M_DEVBUF); 858 if (sc->sc_params.maxsize != 0) { 859 sc->sc_inbuf = malloc(sc->sc_params.maxsize+2, 860 M_DEVBUF, M_WAITOK); 861 for (i = 0; i < MAXFRAMES; i++) 862 sc->sc_frames[i].buf = 863 malloc(sc->sc_params.maxsize, 864 M_DEVBUF, M_WAITOK); 865 } else { 866 sc->sc_inbuf = NULL; 867 for (i = 0; i < MAXFRAMES; i++) 868 sc->sc_frames[i].buf = NULL; 869 } 870 } 871 sc->sc_framestate = FRAME_OUTSIDE; 872 873 return (0); 874 } 875 876 int 877 irframet_get_speeds(void *h, int *speeds) 878 { 879 struct tty *tp = h; 880 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 881 882 DPRINTF(("%s: tp=%p\n", __func__, tp)); 883 884 if (sc == NULL) /* during attach */ 885 *speeds = IRDA_SPEEDS_SIR; 886 else 887 *speeds = irt_dongles[sc->sc_dongle].speedmask; 888 return (0); 889 } 890 891 int 892 irframet_get_turnarounds(void *h, int *turnarounds) 893 { 894 struct tty *tp = h; 895 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 896 897 DPRINTF(("%s: tp=%p\n", __func__, tp)); 898 899 *turnarounds = irt_dongles[sc->sc_dongle].turnmask; 900 return (0); 901 } 902 903 void 904 irt_ioctl(struct tty *tp, u_long cmd, void *arg) 905 { 906 const struct cdevsw *cdev; 907 int error; 908 dev_t dev; 909 910 dev = tp->t_dev; 911 cdev = cdevsw_lookup(dev); 912 if (cdev != NULL) 913 error = (*cdev->d_ioctl)(dev, cmd, arg, 0, curlwp); 914 else 915 error = ENXIO; 916 #ifdef DIAGNOSTIC 917 if (error) 918 printf("irt_ioctl: cmd=0x%08lx error=%d\n", cmd, error); 919 #endif 920 } 921 922 void 923 irt_setspeed(struct tty *tp, u_int speed) 924 { 925 struct termios tt; 926 927 irt_ioctl(tp, TIOCGETA, &tt); 928 tt.c_ispeed = tt.c_ospeed = speed; 929 tt.c_cflag &= ~HUPCL; 930 tt.c_cflag |= CLOCAL; 931 irt_ioctl(tp, TIOCSETAF, &tt); 932 } 933 934 void 935 irt_setline(struct tty *tp, u_int line) 936 { 937 int mline; 938 939 irt_ioctl(tp, TIOCMGET, &mline); 940 mline &= ~(TIOCM_DTR | TIOCM_RTS); 941 mline |= line; 942 irt_ioctl(tp, TIOCMSET, (void *)&mline); 943 } 944 945 void 946 irt_delay(struct tty *tp, u_int ms) 947 { 948 if (cold) 949 delay(ms * 1000); 950 else 951 tsleep(&irt_delay, PZERO, "irtdly", ms * hz / 1000 + 1); 952 953 } 954 955 /********************************************************************** 956 * No dongle 957 **********************************************************************/ 958 void 959 irts_none(struct tty *tp, u_int speed) 960 { 961 irt_setspeed(tp, speed); 962 } 963 964 /********************************************************************** 965 * Tekram 966 **********************************************************************/ 967 #define TEKRAM_PW 0x10 968 969 #define TEKRAM_115200 (TEKRAM_PW|0x00) 970 #define TEKRAM_57600 (TEKRAM_PW|0x01) 971 #define TEKRAM_38400 (TEKRAM_PW|0x02) 972 #define TEKRAM_19200 (TEKRAM_PW|0x03) 973 #define TEKRAM_9600 (TEKRAM_PW|0x04) 974 #define TEKRAM_2400 (TEKRAM_PW|0x08) 975 976 #define TEKRAM_TV (TEKRAM_PW|0x05) 977 978 void 979 irts_tekram(struct tty *tp, u_int speed) 980 { 981 int s; 982 983 irt_setspeed(tp, 9600); 984 irt_setline(tp, 0); 985 irt_delay(tp, 50); 986 987 irt_setline(tp, TIOCM_RTS); 988 irt_delay(tp, 1); 989 990 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 991 irt_delay(tp, 1); /* 50 us */ 992 993 irt_setline(tp, TIOCM_DTR); 994 irt_delay(tp, 1); /* 7 us */ 995 996 switch(speed) { 997 case 115200: s = TEKRAM_115200; break; 998 case 57600: s = TEKRAM_57600; break; 999 case 38400: s = TEKRAM_38400; break; 1000 case 19200: s = TEKRAM_19200; break; 1001 case 2400: s = TEKRAM_2400; break; 1002 default: s = TEKRAM_9600; break; 1003 } 1004 irt_putc(tp, s); 1005 irframetstart(tp); 1006 1007 irt_delay(tp, 100); 1008 1009 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1010 if (speed != 9600) 1011 irt_setspeed(tp, speed); 1012 irt_delay(tp, 1); /* 50 us */ 1013 } 1014 1015 /********************************************************************** 1016 * Jeteye 1017 **********************************************************************/ 1018 void 1019 irts_jeteye(struct tty *tp, u_int speed) 1020 { 1021 switch (speed) { 1022 case 19200: 1023 irt_setline(tp, TIOCM_DTR); 1024 break; 1025 case 115200: 1026 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1027 break; 1028 default: /*9600*/ 1029 irt_setline(tp, TIOCM_RTS); 1030 break; 1031 } 1032 irt_setspeed(tp, speed); 1033 } 1034 1035 /********************************************************************** 1036 * Actisys 1037 **********************************************************************/ 1038 void 1039 irts_actisys(struct tty *tp, u_int speed) 1040 { 1041 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 1042 int pulses; 1043 1044 irt_setspeed(tp, speed); 1045 1046 switch(speed) { 1047 case 19200: pulses=1; break; 1048 case 57600: pulses=2; break; 1049 case 115200: pulses=3; break; 1050 case 38400: pulses=4; break; 1051 default: /* 9600 */ pulses=0; break; 1052 } 1053 1054 if (sc->sc_dongle_private == 0) { 1055 sc->sc_dongle_private = 1; 1056 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1057 /* 1058 * Must wait at least 50ms after initial 1059 * power on to charge internal capacitor 1060 */ 1061 irt_delay(tp, 50); 1062 } 1063 irt_setline(tp, TIOCM_RTS); 1064 delay(2); 1065 for (;;) { 1066 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1067 delay(2); 1068 if (--pulses <= 0) 1069 break; 1070 irt_setline(tp, TIOCM_DTR); 1071 delay(2); 1072 } 1073 } 1074 1075 /********************************************************************** 1076 * Litelink 1077 **********************************************************************/ 1078 void 1079 irts_litelink(struct tty *tp, u_int speed) 1080 { 1081 struct irframet_softc *sc = (struct irframet_softc *)tp->t_sc; 1082 int pulses; 1083 1084 irt_setspeed(tp, speed); 1085 1086 switch(speed) { 1087 case 57600: pulses=1; break; 1088 case 38400: pulses=2; break; 1089 case 19200: pulses=3; break; 1090 case 9600: pulses=4; break; 1091 default: /* 115200 */ pulses=0; break; 1092 } 1093 1094 if (sc->sc_dongle_private == 0) { 1095 sc->sc_dongle_private = 1; 1096 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1097 } 1098 irt_setline(tp, TIOCM_RTS); 1099 irt_delay(tp, 1); /* 15 us */; 1100 for (;;) { 1101 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1102 irt_delay(tp, 1); /* 15 us */; 1103 if (--pulses <= 0) 1104 break; 1105 irt_setline(tp, TIOCM_DTR); 1106 irt_delay(tp, 1); /* 15 us */; 1107 } 1108 } 1109 1110 /********************************************************************** 1111 * Girbil 1112 **********************************************************************/ 1113 /* Control register 1 */ 1114 #define GIRBIL_TXEN 0x01 /* Enable transmitter */ 1115 #define GIRBIL_RXEN 0x02 /* Enable receiver */ 1116 #define GIRBIL_ECAN 0x04 /* Cancel self emmited data */ 1117 #define GIRBIL_ECHO 0x08 /* Echo control characters */ 1118 1119 /* LED Current Register */ 1120 #define GIRBIL_HIGH 0x20 1121 #define GIRBIL_MEDIUM 0x21 1122 #define GIRBIL_LOW 0x22 1123 1124 /* Baud register */ 1125 #define GIRBIL_2400 0x30 1126 #define GIRBIL_4800 0x31 1127 #define GIRBIL_9600 0x32 1128 #define GIRBIL_19200 0x33 1129 #define GIRBIL_38400 0x34 1130 #define GIRBIL_57600 0x35 1131 #define GIRBIL_115200 0x36 1132 1133 /* Mode register */ 1134 #define GIRBIL_IRDA 0x40 1135 #define GIRBIL_ASK 0x41 1136 1137 /* Control register 2 */ 1138 #define GIRBIL_LOAD 0x51 /* Load the new baud rate value */ 1139 1140 void 1141 irts_girbil(struct tty *tp, u_int speed) 1142 { 1143 int s; 1144 1145 irt_setspeed(tp, 9600); 1146 irt_setline(tp, TIOCM_DTR); 1147 irt_delay(tp, 5); 1148 irt_setline(tp, TIOCM_RTS); 1149 irt_delay(tp, 20); 1150 switch(speed) { 1151 case 115200: s = GIRBIL_115200; break; 1152 case 57600: s = GIRBIL_57600; break; 1153 case 38400: s = GIRBIL_38400; break; 1154 case 19200: s = GIRBIL_19200; break; 1155 case 4800: s = GIRBIL_4800; break; 1156 case 2400: s = GIRBIL_2400; break; 1157 default: s = GIRBIL_9600; break; 1158 } 1159 irt_putc(tp, GIRBIL_TXEN|GIRBIL_RXEN); 1160 irt_putc(tp, s); 1161 irt_putc(tp, GIRBIL_LOAD); 1162 irframetstart(tp); 1163 irt_delay(tp, 100); 1164 irt_setline(tp, TIOCM_DTR | TIOCM_RTS); 1165 if (speed != 9600) 1166 irt_setspeed(tp, speed); 1167 } 1168
Indexes created Tue Sep 30 11:09:46 GMT 2025