1 /* $NetBSD: msc.c,v 1.42 2010/05/25 02:21:30 jklos Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * - converted from NetBSD Amiga serial driver to A2232 serial driver 32 * by zik 931207 33 * - added ttyflags hooks rfh 940419 34 * - added new style config support rfh 940601 35 * - added code to halt board during memory load so board doesn't flip 36 * out. /dev/reload works now. Also created mschwiflow function so BSD can 37 * attempt to use board RTS flow control now. rfh 950108 38 * - Integrated work from Jukka Marin <jmarin@jmp.fi> and 39 * Timo Rossi <trossi@jyu.fi> The mscmint() code is Jukka's. 950916 40 * Integrated more bug fixes by Jukka Marin <jmarin@jmp.fi> 950918 41 * Also added Jukka's turbo board code. 950918 42 * - Reformatted to NetBSD style format. 43 * - Rewritten the carrier detect system to prevent lock-ups (jm 951029) 44 */ 45 46 /* 47 * Copyright (c) 1993 Zik. 48 * Copyright (c) 1995 Jukka Marin <jmarin@jmp.fi>. 49 * Copyright (c) 1995 Timo Rossi <trossi@jyu.fi>. 50 * Copyright (c) 1995 Rob Healey <rhealey@kas.helios.mn.org>. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. All advertising materials mentioning features or use of this software 61 * must display the following acknowledgement: 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * - converted from NetBSD Amiga serial driver to A2232 serial driver 81 * by zik 931207 82 * - added ttyflags hooks rfh 940419 83 * - added new style config support rfh 940601 84 * - added code to halt board during memory load so board doesn't flip 85 * out. /dev/reload works now. Also created mschwiflow function so BSD can 86 * attempt to use board RTS flow control now. rfh 950108 87 * - Integrated work from Jukka Marin <jmarin@jmp.fi> and 88 * Timo Rossi <trossi@jyu.fi> The mscmint() code is Jukka's. 950916 89 * Integrated more bug fixes by Jukka Marin <jmarin@jmp.fi> 950918 90 * Also added Jukka's turbo board code. 950918 91 * - Reformatted to NetBSD style format. 92 * - Rewritten the carrier detect system to prevent lock-ups (jm 951029) 93 */ 94 95 #include <sys/cdefs.h> 96 __KERNEL_RCSID(0, "$NetBSD: msc.c,v 1.42 2010/05/25 02:21:30 jklos Exp $"); 97 98 #include "msc.h" 99 100 #if NMSC > 0 101 #include <sys/param.h> 102 #include <sys/systm.h> 103 #include <sys/ioctl.h> 104 #include <sys/tty.h> 105 #include <sys/proc.h> 106 #include <sys/file.h> 107 #include <sys/malloc.h> 108 #include <sys/uio.h> 109 #include <sys/kernel.h> 110 #include <sys/syslog.h> 111 #include <sys/device.h> 112 #include <sys/conf.h> 113 #include <sys/kauth.h> 114 115 #include <amiga/amiga/device.h> 116 #include <amiga/dev/zbusvar.h> 117 #include <amiga/dev/mscreg.h> 118 #include <machine/cpu.h> 119 120 #include <amiga/amiga/custom.h> 121 #include <amiga/amiga/cia.h> 122 #include <amiga/amiga/cc.h> 123 124 /* 6502 code for A2232 card */ 125 #include "msc6502.h" 126 127 /* 128 * Note: These are Zik's original comments: 129 * There is a bit of a "gotcha" concerning the numbering 130 * of msc devices and the specification of the number of serial 131 * lines in the kernel. 132 * 133 * Each board has seven lines, but for programming convenience 134 * and compatibility with Amiga UNIX the boards' minor device 135 * numbers are allocated in groups of sixteen: 136 * 137 * minor device numbers 138 * First board 0 2 4 6 8 10 12 139 * Second board 16 18 20 22 24 26 28 140 * Third board 32 34 36 38 40 42 44 141 * 142 * The intermediate minor device numbers are dialin versions 143 * of the same devices. ie. 10 is dialout line 6 and 11 is 144 * the dialin version of line 6. 145 * 146 * On the other hand, I have made the NMSC config option refer 147 * to the total number of a2232 cards, not the maximum 148 * minor device number. So you might have NMSC=3, in which case 149 * you have three boards with minor device numbers from 0 to 45. 150 */ 151 152 int mscparam(struct tty *, struct termios *); 153 void mscstart(struct tty *); 154 int mschwiflow(struct tty *, int); 155 int mscinitcard(struct zbus_args *); 156 157 int mscdefaultrate = TTYDEF_SPEED; 158 159 struct mscdevice mscdev[MSCSLOTS]; /* device structs for all lines */ 160 struct tty *msc_tty[MSCTTYS]; /* ttys for all lines */ 161 162 struct vbl_node msc_vbl_node[NMSC]; /* vbl interrupt node per board */ 163 164 const struct speedtab mscspeedtab_normal[] = { 165 { 0, 0 }, 166 { 50, MSCPARAM_B50 }, 167 { 75, MSCPARAM_B75 }, 168 { 110, MSCPARAM_B110 }, 169 { 134, MSCPARAM_B134 }, 170 { 150, MSCPARAM_B150 }, 171 { 300, MSCPARAM_B300 }, 172 { 600, MSCPARAM_B600 }, 173 { 1200, MSCPARAM_B1200 }, 174 { 1800, MSCPARAM_B1800 }, 175 { 2400, MSCPARAM_B2400 }, 176 { 3600, MSCPARAM_B3600 }, 177 { 4800, MSCPARAM_B4800 }, 178 { 7200, MSCPARAM_B7200 }, 179 { 9600, MSCPARAM_B9600 }, 180 { 19200, MSCPARAM_B19200 }, 181 { 115200, MSCPARAM_B115200 }, 182 { -1, -1 } 183 }; 184 185 const struct speedtab mscspeedtab_turbo[] = { 186 { 0, 0 }, 187 { 100, MSCPARAM_B50 }, 188 { 150, MSCPARAM_B75 }, 189 { 220, MSCPARAM_B110 }, 190 { 269, MSCPARAM_B134 }, 191 { 300, MSCPARAM_B150 }, 192 { 600, MSCPARAM_B300 }, 193 { 1200, MSCPARAM_B600 }, 194 { 2400, MSCPARAM_B1200 }, 195 { 3600, MSCPARAM_B1800 }, 196 { 4800, MSCPARAM_B2400 }, 197 { 7200, MSCPARAM_B3600 }, 198 { 9600, MSCPARAM_B4800 }, 199 { 14400, MSCPARAM_B7200 }, 200 { 19200, MSCPARAM_B9600 }, 201 { 38400, MSCPARAM_B19200 }, 202 { 230400, MSCPARAM_B115200 }, 203 { -1, -1 } 204 }; 205 206 const struct speedtab *mscspeedtab; 207 208 int mscmctl(dev_t dev, int bits, int howto); 209 void mscmint(register void *data); 210 211 int mscmatch(struct device *, struct cfdata *, void *); 212 void mscattach(struct device *, struct device *, void *); 213 214 #define SWFLAGS(dev) (msc->openflags | (MSCDIALIN(dev) ? 0 : TIOCFLAG_SOFTCAR)) 215 #define DEBUG_CD 0 216 217 CFATTACH_DECL(msc, sizeof(struct device), 218 mscmatch, mscattach, NULL, NULL); 219 220 dev_type_open(mscopen); 221 dev_type_close(mscclose); 222 dev_type_read(mscread); 223 dev_type_write(mscwrite); 224 dev_type_ioctl(mscioctl); 225 dev_type_stop(mscstop); 226 dev_type_tty(msctty); 227 dev_type_poll(mscpoll); 228 229 const struct cdevsw msc_cdevsw = { 230 mscopen, mscclose, mscread, mscwrite, mscioctl, 231 mscstop, msctty, mscpoll, nommap, ttykqfilter, D_TTY 232 }; 233 234 int 235 mscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 236 { 237 struct zbus_args *zap; 238 239 zap = auxp; 240 if (zap->manid == 514 && (zap->prodid == 70 || zap->prodid == 69)) 241 return(1); 242 243 return (0); 244 } 245 246 void 247 mscattach(struct device *pdp, struct device *dp, void *auxp) 248 { 249 volatile struct mscmemory *mscmem; 250 struct mscdevice *msc; 251 struct zbus_args *zap; 252 int unit; 253 int Count; 254 255 zap = (struct zbus_args *)auxp; 256 unit = device_unit(dp); 257 258 /* 259 * Make config msgs look nicer. 260 */ 261 printf("\n"); 262 263 if (mscinitcard(zap) != 0) { 264 printf("msc%d: Board initialize failed, bad download code.\n", unit); 265 return; 266 } 267 268 printf("msc%d: Board successfully initialized.\n", unit); 269 270 mscmem = (struct mscmemory *) zap->va; 271 272 if (mscmem->Common.Crystal == MSC_UNKNOWN) { 273 printf("msc%d: Unable to detect crystal frequency.\n", unit); 274 return; 275 } 276 277 if (mscmem->Common.Crystal == MSC_TURBO) { 278 printf("msc%d: Turbo version detected (%02x%02x:%d)\n", unit, 279 mscmem->Common.TimerH, mscmem->Common.TimerL, 280 mscmem->Common.Pad_a); 281 mscspeedtab = mscspeedtab_turbo; 282 } else { 283 printf("msc%d: Normal version detected (%02x%02x:%d)\n", unit, 284 mscmem->Common.TimerH, mscmem->Common.TimerL, 285 mscmem->Common.Pad_a); 286 mscspeedtab = mscspeedtab_normal; 287 } 288 289 mscmem->Common.CDStatus = 0; /* common status for all 7 ports */ 290 291 /* XXX 8 is a constant */ 292 for (Count = 0; Count < 8 && MSCSLOTUL(unit, Count) < MSCSLOTS; Count++) { 293 msc = &mscdev[MSCSLOTUL(unit, Count)]; 294 msc->board = mscmem; 295 msc->port = Count; 296 msc->flags = 0; 297 msc->openflags = 0; 298 msc->active = 1; 299 msc->unit = unit; 300 msc->closing = false; 301 msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, Count))] = NULL; 302 msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, Count)) + 1] = NULL; 303 } 304 305 /* disable the non-existent eighth port */ 306 if (MSCSLOTUL(unit, NUMLINES) < MSCSLOTS) 307 mscdev[MSCSLOTUL(unit, NUMLINES)].active = 0; 308 309 msc_vbl_node[unit].function = (void (*) (void *)) mscmint; 310 msc_vbl_node[unit].data = (void *) unit; 311 312 add_vbl_function (&msc_vbl_node[unit], MSC_VBL_PRIORITY, (void *)unit); 313 314 return; 315 } 316 317 /* ARGSUSED */ 318 int 319 mscopen(dev_t dev, int flag, int mode, struct lwp *l) 320 { 321 register struct tty *tp; 322 struct mscdevice *msc; 323 volatile struct mscstatus *ms; 324 int error = 0; 325 int s, slot, ttyn; 326 327 /* get the device structure */ 328 slot = MSCSLOT(dev); 329 ttyn = MSCTTY(dev); 330 331 if (slot >= MSCSLOTS) 332 return ENXIO; 333 334 if (MSCLINE(dev) >= NUMLINES) 335 return ENXIO; 336 337 msc = &mscdev[slot]; 338 ms = &msc->board->Status[msc->port]; 339 340 if (!msc->active) 341 return ENXIO; 342 343 /* 344 * RFH: WHY here? Put down by while like other serial drivers 345 * But if we do that it makes things bomb. 346 */ 347 s = spltty(); 348 349 if (!msc_tty[ttyn]) { 350 351 tp = ttymalloc(); 352 tty_attach(tp); 353 msc_tty[ttyn] = tp; 354 msc_tty[ttyn+1] = (struct tty *)NULL; 355 356 #if 0 357 /* default values are not optimal for this device, increase buffers. */ 358 clfree(&tp->t_rawq); 359 clfree(&tp->t_canq); 360 clfree(&tp->t_outq); 361 clalloc(&tp->t_rawq, 8192, 1); 362 clalloc(&tp->t_canq, 8192, 1); 363 clalloc(&tp->t_outq, 8192, 0); 364 #endif 365 366 } else 367 tp = msc_tty[ttyn]; 368 369 tp->t_oproc = (void (*) (struct tty *)) mscstart; 370 tp->t_param = mscparam; 371 tp->t_dev = dev; 372 tp->t_hwiflow = mschwiflow; 373 374 /* if port is still closing, just bitbucket remaining characters */ 375 if (msc->closing) { 376 ms->OutFlush = true; 377 msc->closing = false; 378 } 379 splx(s); 380 381 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 382 return (EBUSY); 383 384 mutex_spin_enter(&tty_lock); 385 /* initialize tty */ 386 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 387 ttychars(tp); 388 if (tp->t_ispeed == 0) { 389 tp->t_iflag = TTYDEF_IFLAG; 390 tp->t_oflag = TTYDEF_OFLAG; 391 tp->t_cflag = TTYDEF_CFLAG; 392 tp->t_lflag = TTYDEF_LFLAG; 393 tp->t_ispeed = tp->t_ospeed = mscdefaultrate; 394 } 395 396 /* flags changed to be private to every unit by JM */ 397 if (msc->openflags & TIOCFLAG_CLOCAL) 398 tp->t_cflag |= CLOCAL; 399 if (msc->openflags & TIOCFLAG_CRTSCTS) 400 tp->t_cflag |= CRTSCTS; 401 if (msc->openflags & TIOCFLAG_MDMBUF) 402 tp->t_cflag |= MDMBUF; 403 404 mscparam(tp, &tp->t_termios); 405 ttsetwater(tp); 406 407 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 408 409 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 410 (mscmctl(dev, 0, DMGET) & TIOCM_CD)) 411 tp->t_state |= TS_CARR_ON; 412 else 413 tp->t_state &= ~TS_CARR_ON; 414 415 } 416 417 /* 418 * if NONBLOCK requested, ignore carrier 419 */ 420 if (flag & O_NONBLOCK) { 421 #if DEBUG_CD 422 printf("msc%d: %d open nonblock\n", msc->unit, MSCLINE(dev)); 423 #endif 424 goto done; 425 } 426 427 /* 428 * s = spltty(); 429 * 430 * This causes hangs when put here, like other TTY drivers do, rather than 431 * above, WHY? RFH 432 * 433 */ 434 435 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 436 tp->t_wopen++; 437 438 #if DEBUG_CD 439 printf("msc%d: %d waiting for CD\n", msc->unit, MSCLINE(dev)); 440 #endif 441 error = ttysleep(tp, &tp->t_rawcv, true, 0); 442 tp->t_wopen--; 443 444 if (error) { 445 mutex_spin_exit(&tty_lock); 446 return(error); 447 } 448 } 449 450 #if DEBUG_CD 451 printf("msc%d: %d got CD\n", msc->unit, MSCLINE(dev)); 452 #endif 453 454 done: 455 /* This is a way to handle lost XON characters */ 456 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 457 tp->t_state &= ~TS_TTSTOP; 458 ttstart (tp); 459 } 460 461 /* 462 * Reset the tty pointer, as there could have been a dialout 463 * use of the tty with a dialin open waiting. 464 */ 465 tp->t_dev = dev; 466 mutex_spin_exit(&tty_lock); 467 468 return tp->t_linesw->l_open(dev, tp); 469 } 470 471 472 int 473 mscclose(dev_t dev, int flag, int mode, struct lwp *l) 474 { 475 register struct tty *tp; 476 int slot; 477 volatile struct mscstatus *ms; 478 struct mscdevice *msc; 479 480 /* get the device structure */ 481 slot = MSCSLOT(dev); 482 483 if (slot >= MSCSLOTS) 484 return ENXIO; 485 486 msc = &mscdev[slot]; 487 488 if (!msc->active) 489 return ENXIO; 490 491 ms = &msc->board->Status[msc->port]; 492 493 tp = msc_tty[MSCTTY(dev)]; 494 tp->t_linesw->l_close(tp, flag); 495 496 (void) mscmctl(dev, 0, DMSET); 497 498 ttyclose(tp); 499 500 if (msc->flags & TIOCM_DTR) 501 msc->closing = true; /* flush remaining characters before dropping DTR */ 502 else 503 ms->OutFlush = true; /* just bitbucket remaining characters */ 504 505 return (0); 506 } 507 508 509 int 510 mscread(dev_t dev, struct uio *uio, int flag) 511 { 512 register struct tty *tp; 513 514 tp = msc_tty[MSCTTY(dev)]; 515 516 if (! tp) 517 return ENXIO; 518 519 return tp->t_linesw->l_read(tp, uio, flag); 520 } 521 522 523 int 524 mscwrite(dev_t dev, struct uio *uio, int flag) 525 { 526 register struct tty *tp; 527 528 tp = msc_tty[MSCTTY(dev)]; 529 530 if (! tp) 531 return ENXIO; 532 533 return tp->t_linesw->l_write(tp, uio, flag); 534 } 535 536 int 537 mscpoll(dev_t dev, int events, struct lwp *l) 538 { 539 register struct tty *tp; 540 541 tp = msc_tty[MSCTTY(dev)]; 542 543 if (! tp) 544 return ENXIO; 545 546 return ((*tp->t_linesw->l_poll)(tp, events, l)); 547 } 548 549 /* 550 * This interrupt is periodically invoked in the vertical blank 551 * interrupt. It's used to keep track of the modem control lines 552 * and (new with the fast_int code) to move accumulated data up in 553 * to the tty layer. 554 * 555 * NOTE: MSCCDHACK is an invention of mine for dubious purposes. If you 556 * want to activate it add 557 * options MSCCDHACK 558 * in the kernel conf file. Basically it forces CD->Low transitions 559 * to ALWAYS send a signal to the process, even if the device is in 560 * clocal mode or an outdial device. RFH 561 */ 562 void 563 mscmint(register void *data) 564 { 565 register struct tty *tp; 566 struct mscdevice *msc; 567 volatile struct mscstatus *ms; 568 volatile u_char *ibuf, *cbuf; 569 unsigned char newhead; /* was int */ 570 unsigned char bufpos; /* was int */ 571 unsigned char ncd, ocd, ccd; 572 int unit, slot, maxslot; 573 int s, i; 574 575 unit = (int) data; 576 577 /* check each line on this board */ 578 maxslot = MSCSLOTUL(unit, NUMLINES); 579 if (maxslot > MSCSLOTS) 580 maxslot = MSCSLOTS; 581 582 msc = &mscdev[MSCSLOTUL(unit, 0)]; 583 584 newhead = msc->board->Common.CDHead; 585 bufpos = msc->board->Common.CDTail; 586 if (newhead != bufpos) { /* CD events in queue */ 587 /* set interrupt priority level */ 588 s = spltty(); 589 ocd = msc->board->Common.CDStatus; /* get old status bits */ 590 while (newhead != bufpos) { /* read all events */ 591 ncd = msc->board->CDBuf[bufpos++]; /* get one event */ 592 ccd = ncd ^ ocd; /* mask of changed lines*/ 593 ocd = ncd; /* save new status bits */ 594 #if DEBUG_CD 595 printf("ocd %02x ncd %02x ccd %02x\n", ocd, ncd, ccd); 596 #endif 597 for(i = 0; i < NUMLINES; i++) { /* do for all lines */ 598 if (ccd & 1) { /* this one changed */ 599 msc = &mscdev[MSCSLOTUL(unit, i)]; 600 if (ncd & 1) { /* CD is now OFF */ 601 #if DEBUG_CD 602 printf("msc%d: CD OFF %d\n", unit, msc->port); 603 #endif 604 msc->flags &= ~TIOCM_CD; 605 if ((tp = msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, i))]) && 606 (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 607 608 #ifndef MSCCDHACK 609 if (MSCDIALIN(tp->t_dev)) 610 #endif 611 { 612 if (tp->t_linesw->l_modem(tp, 0) == 0) { 613 /* clear RTS and DTR, bitbucket output */ 614 ms = &msc->board->Status[msc->port]; 615 ms->Command = (ms->Command & ~MSCCMD_CMask) | 616 MSCCMD_Close; 617 ms->Setup = true; 618 msc->flags &= ~(TIOCM_DTR | TIOCM_RTS); 619 ms->OutFlush = true; 620 } 621 } 622 } 623 } else { /* CD is now ON */ 624 #if DEBUG_CD 625 printf("msc%d: CD ON %d\n", unit, msc->port); 626 #endif 627 msc->flags |= TIOCM_CD; 628 if ((tp = msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, i))]) && 629 (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 630 if (MSCDIALIN(tp->t_dev)) 631 tp->t_linesw->l_modem(tp, 1); 632 } /* if tp valid and port open */ 633 } /* CD on/off */ 634 } /* if CD changed for this line */ 635 ccd >>= 1; ncd >>= 1; /* bit for next line */ 636 } /* for every line */ 637 } /* while events in queue */ 638 msc->board->Common.CDStatus = ocd; /* save new status */ 639 msc->board->Common.CDTail = bufpos; /* remove events */ 640 splx(s); 641 } /* if events in CD queue */ 642 643 for (slot = MSCSLOTUL(unit, 0); slot < maxslot; slot++) { 644 msc = &mscdev[slot]; 645 646 if (!msc->active) 647 continue; 648 649 tp = msc_tty[MSCTTYSLOT(slot)]; 650 ms = &msc->board->Status[msc->port]; 651 652 newhead = ms->InHead; /* 65c02 write pointer */ 653 654 /* yoohoo, is the port open? */ 655 if (tp && (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 656 /* port is open, handle all type of events */ 657 658 /* set interrupt priority level */ 659 s = spltty(); 660 661 /* check for input for this port */ 662 if (newhead != (bufpos = ms->InTail)) { 663 /* buffer for input chars/events */ 664 ibuf = &msc->board->InBuf[msc->port][0]; 665 666 /* data types of bytes in ibuf */ 667 cbuf = &msc->board->InCtl[msc->port][0]; 668 669 /* do for all chars, if room */ 670 while (bufpos != newhead) { 671 /* which type of input data? */ 672 switch (cbuf[bufpos]) { 673 /* input event (CD, BREAK, etc.) */ 674 case MSCINCTL_EVENT: 675 switch (ibuf[bufpos++]) { 676 case MSCEVENT_Break: 677 tp->t_linesw->l_rint(TTY_FE, tp); 678 break; 679 680 default: 681 printf("msc%d: unknown event type %d\n", 682 msc->unit, ibuf[(bufpos-1)&0xff]); 683 } /* event type switch */ 684 break; 685 686 case MSCINCTL_CHAR: 687 if (tp->t_state & TS_TBLOCK) { 688 goto NoRoomForYa; 689 } 690 tp->t_linesw->l_rint((int)ibuf[bufpos++], tp); 691 break; 692 693 default: 694 printf("msc%d: unknown data type %d\n", 695 msc->unit, cbuf[bufpos]); 696 bufpos++; 697 } /* switch on input data type */ 698 } /* while there's something in the buffer */ 699 NoRoomForYa: 700 ms->InTail = bufpos; /* tell 65C02 what we've read */ 701 } /* if there was something in the buffer */ 702 703 /* we get here only when the port is open */ 704 /* send output */ 705 if (tp->t_state & (TS_BUSY|TS_FLUSH)) { 706 707 bufpos = ms->OutHead - ms->OutTail; 708 709 /* busy and below low water mark? */ 710 if (tp->t_state & TS_BUSY) { 711 if (bufpos < IOBUFLOWWATER) { 712 tp->t_state &= ~TS_BUSY; /* not busy any more */ 713 if (tp->t_linesw) 714 tp->t_linesw->l_start(tp); 715 else 716 mscstart(tp); 717 } 718 } 719 720 /* waiting for flush and buffer empty? */ 721 if (tp->t_state & TS_FLUSH) { 722 if (bufpos == 0) 723 tp->t_state &= ~TS_FLUSH; /* finished flushing */ 724 } 725 } /* BUSY or FLUSH */ 726 727 splx(s); 728 729 } else { /* End of port open */ 730 /* port is closed, don't pass on the chars from it */ 731 732 /* check for input for this port */ 733 if (newhead != (bufpos = ms->InTail)) { 734 /* buffer for input chars/events */ 735 ibuf = &msc->board->InBuf[msc->port][0]; 736 737 /* data types of bytes in ibuf */ 738 cbuf = &msc->board->InCtl[msc->port][0]; 739 740 /* do for all chars, if room */ 741 while (bufpos != newhead) { 742 /* which type of input data? */ 743 switch (cbuf[bufpos]) { 744 /* input event (BREAK, etc.) */ 745 case MSCINCTL_EVENT: 746 switch (ibuf[bufpos++]) { 747 default: 748 printf("msc: unknown event type %d\n", 749 ibuf[(bufpos-1)&0xff]); 750 } /* event type switch */ 751 break; 752 753 default: 754 bufpos++; 755 } /* switch on input data type */ 756 } /* while there's something in the buffer */ 757 758 ms->InTail = bufpos; /* tell 65C02 what we've read */ 759 } /* if there was something in the buffer */ 760 } /* End of port open/close */ 761 762 /* is this port closing? */ 763 if (msc->closing) { 764 /* if DTR is off, just bitbucket remaining characters */ 765 if ( (msc->flags & TIOCM_DTR) == 0) { 766 ms->OutFlush = true; 767 msc->closing = false; 768 } 769 /* if output has drained, drop DTR */ 770 else if (ms->OutHead == ms->OutTail) { 771 (void) mscmctl(tp->t_dev, 0, DMSET); 772 msc->closing = false; 773 } 774 } 775 } /* For all ports */ 776 } 777 778 779 int 780 mscioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 781 { 782 register struct tty *tp; 783 register int slot; 784 register int error; 785 struct mscdevice *msc; 786 volatile struct mscstatus *ms; 787 int s; 788 789 /* get the device structure */ 790 slot = MSCSLOT(dev); 791 792 if (slot >= MSCSLOTS) 793 return ENXIO; 794 795 msc = &mscdev[slot]; 796 797 if (!msc->active) 798 return ENXIO; 799 800 ms = &msc->board->Status[msc->port]; 801 if (!(tp = msc_tty[MSCTTY(dev)])) 802 return ENXIO; 803 804 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 805 if (error != EPASSTHROUGH) 806 return (error); 807 808 error = ttioctl(tp, cmd, data, flag, l); 809 if (error != EPASSTHROUGH) 810 return (error); 811 812 switch (cmd) { 813 814 /* send break */ 815 case TIOCSBRK: 816 s = spltty(); 817 ms->Command = (ms->Command & (~MSCCMD_RTSMask)) | MSCCMD_Break; 818 ms->Setup = true; 819 splx(s); 820 break; 821 822 /* clear break */ 823 case TIOCCBRK: 824 s = spltty(); 825 ms->Command = (ms->Command & (~MSCCMD_RTSMask)) | MSCCMD_RTSOn; 826 ms->Setup = true; 827 splx(s); 828 break; 829 830 case TIOCSDTR: 831 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 832 break; 833 834 case TIOCCDTR: 835 if (!MSCDIALIN(dev)) /* don't let dialins drop DTR */ 836 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 837 break; 838 839 case TIOCMSET: 840 (void) mscmctl(dev, *(int *)data, DMSET); 841 break; 842 843 case TIOCMBIS: 844 (void) mscmctl(dev, *(int *)data, DMBIS); 845 break; 846 847 case TIOCMBIC: 848 if (MSCDIALIN(dev)) /* don't let dialins drop DTR */ 849 (void) mscmctl(dev, *(int *)data & TIOCM_DTR, DMBIC); 850 else 851 (void) mscmctl(dev, *(int *)data, DMBIC); 852 break; 853 854 case TIOCMGET: 855 *(int *)data = mscmctl(dev, 0, DMGET); 856 break; 857 858 case TIOCGFLAGS: 859 *(int *)data = SWFLAGS(dev); 860 break; 861 862 case TIOCSFLAGS: 863 error = kauth_authorize_device_tty(l->l_cred, 864 KAUTH_DEVICE_TTY_PRIVSET, tp); 865 if (error != 0) 866 return(EPERM); 867 msc->openflags = *(int *)data; 868 /* only allow valid flags */ 869 msc->openflags &= 870 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 871 break; 872 873 default: 874 return (EPASSTHROUGH); 875 } 876 877 return (0); 878 } 879 880 881 int 882 mscparam(register struct tty *tp, register struct termios *t) 883 { 884 register int cflag = t->c_cflag; 885 struct mscdevice *msc; 886 volatile struct mscstatus *ms; 887 int s, slot; 888 int ospeed = ttspeedtab(t->c_ospeed, mscspeedtab); 889 890 /* get the device structure */ 891 slot = MSCSLOT(tp->t_dev); 892 893 if (slot >= MSCSLOTS) 894 return ENXIO; 895 896 msc = &mscdev[slot]; 897 898 if (!msc->active) 899 return ENXIO; 900 901 ms = &msc->board->Status[msc->port]; 902 903 /* check requested parameters */ 904 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 905 return (EINVAL); 906 907 /* and copy to tty */ 908 tp->t_ispeed = t->c_ispeed; 909 tp->t_ospeed = t->c_ospeed; 910 tp->t_cflag = cflag; 911 912 /* hang up if baud is zero */ 913 if (t->c_ospeed == 0) { 914 if (!MSCDIALIN(tp->t_dev)) /* don't let dialins drop DTR */ 915 (void) mscmctl(tp->t_dev, 0, DMSET); 916 } else { 917 /* set the baud rate */ 918 s = spltty(); 919 ms->Param = (ms->Param & ~MSCPARAM_BaudMask) | ospeed | MSCPARAM_RcvBaud; 920 921 /* 922 * Make sure any previous hangup is undone, ie. reenable DTR. 923 * also mscmctl will cause the speed to be set 924 */ 925 (void) mscmctl (tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 926 927 splx(s); 928 } 929 930 return(0); 931 } 932 933 934 /* 935 * Jukka's code initializes alot of stuff that other drivers don't 936 * I'm including it here so that this code is a common set of work 937 * done by both of us. rfh 938 */ 939 int 940 mschwiflow(struct tty *tp, int flag) 941 { 942 943 /* Rob's version */ 944 #if 1 945 if (flag) 946 mscmctl( tp->t_dev, TIOCM_RTS, DMBIC); /* Clear/Lower RTS */ 947 else 948 mscmctl( tp->t_dev, TIOCM_RTS, DMBIS); /* Set/Raise RTS */ 949 950 #else /* Jukka's version */ 951 952 int s, slot; 953 struct mscdevice *msc; 954 volatile struct mscstatus *ms; 955 956 /* get the device structure */ 957 slot = MSCSLOT(tp->t_dev); 958 if (slot >= MSCSLOTS) 959 return ENXIO; 960 msc = &mscdev[slot]; 961 if (!msc->active) 962 return ENXIO; 963 ms = &msc->board->Status[msc->port]; 964 965 /* Well, we should really _do_ something here, but the 65c02 code 966 * manages the RTS signal on its own now, so... This will probably 967 * change in the future. 968 */ 969 #endif 970 return 1; 971 } 972 973 974 void 975 mscstart(register struct tty *tp) 976 { 977 register int cc; 978 register char *cp; 979 register int mhead; 980 int s, slot; 981 struct mscdevice *msc; 982 volatile struct mscstatus *ms; 983 volatile char *mob; 984 int hiwat = 0; 985 int maxout; 986 987 if (! (tp->t_state & TS_ISOPEN)) 988 return; 989 990 slot = MSCSLOT(tp->t_dev); 991 992 #if 0 993 printf("starting msc%d\n", slot); 994 #endif 995 996 s = spltty(); 997 998 /* don't start if explicitly stopped */ 999 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1000 goto out; 1001 1002 /* wake up if below low water */ 1003 cc = tp->t_outq.c_cc; 1004 if (!ttypull(tp) || (tp->t_state & TS_BUSY)) 1005 goto out; 1006 1007 /* 1008 * Limit the amount of output we do in one burst 1009 */ 1010 msc = &mscdev[slot]; 1011 ms = &msc->board->Status[msc->port]; 1012 mhead = ms->OutHead; 1013 maxout = mhead - ms->OutTail; 1014 1015 if (maxout < 0) 1016 maxout += IOBUFLEN; 1017 1018 maxout = IOBUFLEN - 1 - maxout; 1019 1020 if (cc >= maxout) { 1021 hiwat++; 1022 cc = maxout; 1023 } 1024 1025 cc = q_to_b (&tp->t_outq, msc->tmpbuf, cc); 1026 1027 if (cc > 0) { 1028 tp->t_state |= TS_BUSY; 1029 1030 mob = &msc->board->OutBuf[msc->port][0]; 1031 cp = &msc->tmpbuf[0]; 1032 1033 /* enable output */ 1034 ms->OutDisable = false; 1035 1036 #if 0 1037 msc->tmpbuf[cc] = 0; 1038 printf("sending '%s'\n", msctmpbuf); 1039 #endif 1040 1041 /* send the first char across to reduce latency */ 1042 mob[mhead++] = *cp++; 1043 mhead &= IOBUFLENMASK; 1044 ms->OutHead = mhead; 1045 cc--; 1046 1047 /* copy the rest of the chars across quickly */ 1048 while (cc > 0) { 1049 mob[mhead++] = *cp++; 1050 mhead &= IOBUFLENMASK; 1051 cc--; 1052 } 1053 ms->OutHead = mhead; 1054 1055 /* leave the device busy if we've filled the buffer */ 1056 if (!hiwat) 1057 tp->t_state &= ~TS_BUSY; 1058 } 1059 1060 out: 1061 splx(s); 1062 } 1063 1064 1065 /* XXX */ 1066 /* 1067 * Stop output on a line. 1068 */ 1069 /*ARGSUSED*/ 1070 void 1071 mscstop(register struct tty *tp, int flag) 1072 /* flag variable defaulted to int anyway */ 1073 { 1074 register int s; 1075 #if 0 1076 struct mscdevice *msc; 1077 volatile struct mscstatus *ms; 1078 #endif 1079 1080 s = spltty(); 1081 if (tp->t_state & TS_BUSY) { 1082 if ((tp->t_state & TS_TTSTOP) == 0) { 1083 tp->t_state |= TS_FLUSH; 1084 #if 0 1085 msc = &mscdev[MSCSLOT(tp->t_dev)]; 1086 ms = &msc->board->Status[msc->port]; 1087 printf("stopped output on msc%d\n", MSCSLOT(tp->t_dev)); 1088 ms->OutDisable = true; 1089 #endif 1090 } 1091 } 1092 splx(s); 1093 } 1094 1095 1096 /* 1097 * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR 1098 */ 1099 int 1100 mscmctl(dev_t dev, int bits, int how) 1101 { 1102 struct mscdevice *msc; 1103 volatile struct mscstatus *ms; 1104 int slot; 1105 int s; 1106 u_char newcmd; 1107 int OldFlags; 1108 1109 /* get the device structure */ 1110 slot = MSCSLOT(dev); 1111 1112 if (slot >= MSCSLOTS) 1113 return ENXIO; 1114 1115 msc = &mscdev[slot]; 1116 1117 if (!msc->active) 1118 return ENXIO; 1119 1120 s = spltty(); 1121 1122 if (how != DMGET) { 1123 OldFlags = msc->flags; 1124 bits &= TIOCM_DTR | TIOCM_RTS; /* can only modify DTR and RTS */ 1125 1126 switch (how) { 1127 case DMSET: 1128 msc->flags = (bits | (msc->flags & ~(TIOCM_DTR | TIOCM_RTS))); 1129 break; 1130 1131 case DMBIC: 1132 msc->flags &= ~bits; 1133 break; 1134 1135 case DMBIS: 1136 msc->flags |= bits; 1137 break; 1138 } 1139 1140 /* modify modem control state */ 1141 ms = &msc->board->Status[msc->port]; 1142 1143 if (msc->flags & TIOCM_RTS) /* was bits & */ 1144 newcmd = MSCCMD_RTSOn; 1145 else /* this doesn't actually work now */ 1146 newcmd = MSCCMD_RTSOff; 1147 1148 if (msc->flags & TIOCM_DTR) /* was bits & */ 1149 newcmd |= MSCCMD_Enable; 1150 1151 ms->Command = (ms->Command & (~MSCCMD_RTSMask & ~MSCCMD_Enable)) | newcmd; 1152 ms->Setup = true; 1153 1154 /* if we've dropped DTR, bitbucket any pending output */ 1155 if ( (OldFlags & TIOCM_DTR) && ((bits & TIOCM_DTR) == 0)) 1156 ms->OutFlush = true; 1157 } 1158 1159 bits = msc->flags; 1160 1161 (void) splx(s); 1162 1163 return(bits); 1164 } 1165 1166 1167 struct tty * 1168 msctty(dev_t dev) 1169 { 1170 return(msc_tty[MSCTTY(dev)]); 1171 } 1172 1173 1174 /* 1175 * Load JM's freely redistributable A2232 6502c code. Let turbo detector 1176 * run for a while too. 1177 */ 1178 1179 int 1180 mscinitcard(struct zbus_args *zap) 1181 { 1182 int bcount; 1183 short start; 1184 u_char *from; 1185 volatile u_char *to; 1186 volatile struct mscmemory *mlm; 1187 1188 mlm = (volatile struct mscmemory *)zap->va; 1189 (void)mlm->Enable6502Reset; 1190 1191 /* copy the code across to the board */ 1192 to = (volatile u_char *)mlm; 1193 from = msc6502code; bcount = sizeof(msc6502code) - 2; 1194 start = *(short *)from; from += sizeof(start); 1195 to += start; 1196 1197 while(bcount--) *to++ = *from++; 1198 1199 mlm->Common.Crystal = MSC_UNKNOWN; /* use automatic speed check */ 1200 1201 /* start 6502 running */ 1202 (void)mlm->ResetBoard; 1203 1204 /* wait until speed detector has finished */ 1205 for (bcount = 0; bcount < 2000; bcount++) { 1206 delay(10000); 1207 if (mlm->Common.Crystal) 1208 break; 1209 } 1210 1211 return(0); 1212 } 1213 1214 #endif /* NMSC > 0 */ 1215