rc.c revision 47739
1/* 2 * Copyright (C) 1995 by Pavel Antonov, Moscow, Russia. 3 * Copyright (C) 1995 by Andrey A. Chernov, Moscow, Russia. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* 29 * SDL Communications Riscom/8 (based on Cirrus Logic CL-CD180) driver 30 * 31 */ 32 33#include "rc.h" 34 35#if NRC > 0 36#include "opt_devfs.h" 37 38/*#define RCDEBUG*/ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/tty.h> 43#include <sys/proc.h> 44#include <sys/conf.h> 45#include <sys/dkstat.h> 46#include <sys/fcntl.h> 47#include <sys/interrupt.h> 48#include <sys/kernel.h> 49#ifdef DEVFS 50#include <sys/devfsext.h> 51#endif /*DEVFS*/ 52 53#include <machine/clock.h> 54#include <machine/ipl.h> 55 56#include <i386/isa/isa_device.h> 57 58#include <i386/isa/ic/cd180.h> 59#include <i386/isa/rcreg.h> 60 61/* Prototypes */ 62static int rcprobe __P((struct isa_device *)); 63static int rcattach __P((struct isa_device *)); 64 65#define rcin(port) RC_IN (nec, port) 66#define rcout(port,v) RC_OUT (nec, port, v) 67 68#define WAITFORCCR(u,c) rc_wait0(nec, (u), (c), __LINE__) 69#define CCRCMD(u,c,cmd) WAITFORCCR((u), (c)); rcout(CD180_CCR, (cmd)) 70 71#define RC_IBUFSIZE 256 72#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE) 73#define RC_OBUFSIZE 512 74#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4) 75#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE) 76#define LOTS_OF_EVENTS 64 77 78#define RC_FAKEID 0x10 79 80#define RC_PROBED 1 81#define RC_ATTACHED 2 82 83#define GET_UNIT(dev) (minor(dev) & 0x3F) 84#define CALLOUT(dev) (minor(dev) & 0x80) 85 86/* For isa routines */ 87struct isa_driver rcdriver = { 88 rcprobe, rcattach, "rc" 89}; 90 91static d_open_t rcopen; 92static d_close_t rcclose; 93static d_read_t rcread; 94static d_write_t rcwrite; 95static d_ioctl_t rcioctl; 96static d_stop_t rcstop; 97static d_devtotty_t rcdevtotty; 98 99#define CDEV_MAJOR 63 100static struct cdevsw rc_cdevsw = { 101 /* open */ rcopen, 102 /* close */ rcclose, 103 /* read */ rcread, 104 /* write */ rcwrite, 105 /* ioctl */ rcioctl, 106 /* stop */ rcstop, 107 /* reset */ noreset, 108 /* devtotty */ rcdevtotty, 109 /* poll */ ttpoll, 110 /* mmap */ nommap, 111 /* strategy */ nostrategy, 112 /* name */ "rc", 113 /* parms */ noparms, 114 /* maj */ CDEV_MAJOR, 115 /* dump */ nodump, 116 /* psize */ nopsize, 117 /* flags */ D_TTY, 118 /* maxio */ 0, 119 /* bmaj */ -1 120}; 121 122/* Per-board structure */ 123static struct rc_softc { 124 u_int rcb_probed; /* 1 - probed, 2 - attached */ 125 u_int rcb_addr; /* Base I/O addr */ 126 u_int rcb_unit; /* unit # */ 127 u_char rcb_dtr; /* DTR status */ 128 struct rc_chans *rcb_baserc; /* base rc ptr */ 129} rc_softc[NRC]; 130 131/* Per-channel structure */ 132static struct rc_chans { 133 struct rc_softc *rc_rcb; /* back ptr */ 134 u_short rc_flags; /* Misc. flags */ 135 int rc_chan; /* Channel # */ 136 u_char rc_ier; /* intr. enable reg */ 137 u_char rc_msvr; /* modem sig. status */ 138 u_char rc_cor2; /* options reg */ 139 u_char rc_pendcmd; /* special cmd pending */ 140 u_int rc_dtrwait; /* dtr timeout */ 141 u_int rc_dcdwaits; /* how many waits DCD in open */ 142 u_char rc_hotchar; /* end packed optimize */ 143 struct tty *rc_tp; /* tty struct */ 144 u_char *rc_iptr; /* Chars input buffer */ 145 u_char *rc_hiwat; /* hi-water mark */ 146 u_char *rc_bufend; /* end of buffer */ 147 u_char *rc_optr; /* ptr in output buf */ 148 u_char *rc_obufend; /* end of output buf */ 149 u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */ 150 u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */ 151#ifdef DEVFS 152 void *devfs_token; 153#endif 154} rc_chans[NRC * CD180_NCHAN]; 155 156static int rc_scheduled_event = 0; 157 158/* for pstat -t */ 159static struct tty rc_tty[NRC * CD180_NCHAN]; 160static const int nrc_tty = NRC * CD180_NCHAN; 161 162/* Flags */ 163#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */ 164#define RC_ACTOUT 0x0002 /* Dial-out port active */ 165#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */ 166#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */ 167#define RC_DORXFER 0x0010 /* RXFER event planned */ 168#define RC_DOXXFER 0x0020 /* XXFER event planned */ 169#define RC_MODCHG 0x0040 /* Modem status changed */ 170#define RC_OSUSP 0x0080 /* Output suspended */ 171#define RC_OSBUSY 0x0100 /* start() routine in progress */ 172#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */ 173#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */ 174#define RC_SEND_RDY 0x0800 /* ready to send */ 175 176/* Table for translation of RCSR status bits to internal form */ 177static int rc_rcsrt[16] = { 178 0, TTY_OE, TTY_FE, 179 TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE, 180 TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI, 181 TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE, 182 TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE, 183 TTY_BI|TTY_PE|TTY_FE|TTY_OE 184}; 185 186/* Static prototypes */ 187static ointhand2_t rcintr; 188static void rc_hwreset __P((int, int, unsigned int)); 189static int rc_test __P((int, int)); 190static void rc_discard_output __P((struct rc_chans *)); 191static void rc_hardclose __P((struct rc_chans *)); 192static int rc_modctl __P((struct rc_chans *, int, int)); 193static void rc_start __P((struct tty *)); 194static int rc_param __P((struct tty *, struct termios *)); 195static swihand_t rcpoll; 196static void rc_reinit __P((struct rc_softc *)); 197#ifdef RCDEBUG 198static void printrcflags(); 199#endif 200static timeout_t rc_dtrwakeup; 201static timeout_t rc_wakeup; 202static void disc_optim __P((struct tty *tp, struct termios *t, struct rc_chans *)); 203static void rc_wait0 __P((int nec, int unit, int chan, int line)); 204 205/**********************************************/ 206 207/* Quick device probing */ 208static int 209rcprobe(dvp) 210 struct isa_device *dvp; 211{ 212 int irq = ffs(dvp->id_irq) - 1; 213 register int nec = dvp->id_iobase; 214 215 if (dvp->id_unit > NRC) 216 return 0; 217 if (!RC_VALIDADDR(nec)) { 218 printf("rc%d: illegal base address %x\n", dvp->id_unit, nec); 219 return 0; 220 } 221 if (!RC_VALIDIRQ(irq)) { 222 printf("rc%d: illegal IRQ value %d\n", dvp->id_unit, irq); 223 return 0; 224 } 225 rcout(CD180_PPRL, 0x22); /* Random values to Prescale reg. */ 226 rcout(CD180_PPRH, 0x11); 227 if (rcin(CD180_PPRL) != 0x22 || rcin(CD180_PPRH) != 0x11) 228 return 0; 229 /* Now, test the board more thoroughly, with diagnostic */ 230 if (rc_test(nec, dvp->id_unit)) 231 return 0; 232 rc_softc[dvp->id_unit].rcb_probed = RC_PROBED; 233 234 return 0xF; 235} 236 237static int 238rcattach(dvp) 239 struct isa_device *dvp; 240{ 241 register int chan, nec = dvp->id_iobase; 242 struct rc_softc *rcb = &rc_softc[dvp->id_unit]; 243 struct rc_chans *rc = &rc_chans[dvp->id_unit * CD180_NCHAN]; 244 static int rc_started = 0; 245 struct tty *tp; 246 247 dvp->id_ointr = rcintr; 248 249 /* Thorooughly test the device */ 250 if (rcb->rcb_probed != RC_PROBED) 251 return 0; 252 rcb->rcb_addr = nec; 253 rcb->rcb_dtr = 0; 254 rcb->rcb_baserc = rc; 255 rcb->rcb_unit = dvp->id_unit; 256 /*rcb->rcb_chipid = 0x10 + dvp->id_unit;*/ 257 printf("rc%d: %d chans, firmware rev. %c\n", rcb->rcb_unit, 258 CD180_NCHAN, (rcin(CD180_GFRCR) & 0xF) + 'A'); 259 260 for (chan = 0; chan < CD180_NCHAN; chan++, rc++) { 261 rc->rc_rcb = rcb; 262 rc->rc_chan = chan; 263 rc->rc_iptr = rc->rc_ibuf; 264 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE]; 265 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER]; 266 rc->rc_flags = rc->rc_ier = rc->rc_msvr = 0; 267 rc->rc_cor2 = rc->rc_pendcmd = 0; 268 rc->rc_optr = rc->rc_obufend = rc->rc_obuf; 269 rc->rc_dtrwait = 3 * hz; 270 rc->rc_dcdwaits= 0; 271 rc->rc_hotchar = 0; 272 tp = rc->rc_tp = &rc_tty[chan + (dvp->id_unit * CD180_NCHAN)]; 273 ttychars(tp); 274 tp->t_lflag = tp->t_iflag = tp->t_oflag = 0; 275 tp->t_cflag = TTYDEF_CFLAG; 276 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 277#ifdef DEVFS 278/* FIX THIS to reflect real devices */ 279 rc->devfs_token = 280 devfs_add_devswf(&rc_cdevsw, 281 (dvp->id_unit * CD180_NCHAN) + chan, 282 DV_CHR, 0, 0, 0600, "rc%d.%d", 283 dvp->id_unit, chan); 284#endif 285 } 286 rcb->rcb_probed = RC_ATTACHED; 287 if (!rc_started) { 288 cdevsw_add(&rc_cdevsw); 289 register_swi(SWI_TTY, rcpoll); 290 rc_wakeup((void *)NULL); 291 rc_started = 1; 292 } 293 return 1; 294} 295 296/* RC interrupt handling */ 297static void 298rcintr(unit) 299 int unit; 300{ 301 register struct rc_softc *rcb = &rc_softc[unit]; 302 register struct rc_chans *rc; 303 register int nec, resid; 304 register u_char val, iack, bsr, ucnt, *optr; 305 int good_data, t_state; 306 307 if (rcb->rcb_probed != RC_ATTACHED) { 308 printf("rc%d: bogus interrupt\n", unit); 309 return; 310 } 311 nec = rcb->rcb_addr; 312 313 bsr = ~(rcin(RC_BSR)); 314 315 if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) { 316 printf("rc%d: extra interrupt\n", unit); 317 rcout(CD180_EOIR, 0); 318 return; 319 } 320 321 while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) { 322#ifdef RCDEBUG_DETAILED 323 printf("rc%d: intr (%02x) %s%s%s%s\n", unit, bsr, 324 (bsr & RC_BSR_TOUT)?"TOUT ":"", 325 (bsr & RC_BSR_RXINT)?"RXINT ":"", 326 (bsr & RC_BSR_TXINT)?"TXINT ":"", 327 (bsr & RC_BSR_MOINT)?"MOINT":""); 328#endif 329 if (bsr & RC_BSR_TOUT) { 330 printf("rc%d: hardware failure, reset board\n", unit); 331 rcout(RC_CTOUT, 0); 332 rc_reinit(rcb); 333 return; 334 } 335 if (bsr & RC_BSR_RXINT) { 336 iack = rcin(RC_PILR_RX); 337 good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID)); 338 if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) { 339 printf("rc%d: fake rxint: %02x\n", unit, iack); 340 goto more_intrs; 341 } 342 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 343 t_state = rc->rc_tp->t_state; 344 /* Do RTS flow control stuff */ 345 if ( (rc->rc_flags & RC_RTSFLOW) 346 || !(t_state & TS_ISOPEN) 347 ) { 348 if ( ( !(t_state & TS_ISOPEN) 349 || (t_state & TS_TBLOCK) 350 ) 351 && (rc->rc_msvr & MSVR_RTS) 352 ) 353 rcout(CD180_MSVR, 354 rc->rc_msvr &= ~MSVR_RTS); 355 else if (!(rc->rc_msvr & MSVR_RTS)) 356 rcout(CD180_MSVR, 357 rc->rc_msvr |= MSVR_RTS); 358 } 359 ucnt = rcin(CD180_RDCR) & 0xF; 360 resid = 0; 361 362 if (t_state & TS_ISOPEN) { 363 /* check for input buffer overflow */ 364 if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) { 365 resid = ucnt; 366 ucnt = rc->rc_bufend - rc->rc_iptr; 367 resid -= ucnt; 368 if (!(rc->rc_flags & RC_WAS_BUFOVFL)) { 369 rc->rc_flags |= RC_WAS_BUFOVFL; 370 rc_scheduled_event++; 371 } 372 } 373 optr = rc->rc_iptr; 374 /* check foor good data */ 375 if (good_data) { 376 while (ucnt-- > 0) { 377 val = rcin(CD180_RDR); 378 optr[0] = val; 379 optr[INPUT_FLAGS_SHIFT] = 0; 380 optr++; 381 rc_scheduled_event++; 382 if (val != 0 && val == rc->rc_hotchar) 383 setsofttty(); 384 } 385 } else { 386 /* Store also status data */ 387 while (ucnt-- > 0) { 388 iack = rcin(CD180_RCSR); 389 if (iack & RCSR_Timeout) 390 break; 391 if ( (iack & RCSR_OE) 392 && !(rc->rc_flags & RC_WAS_SILOVFL)) { 393 rc->rc_flags |= RC_WAS_SILOVFL; 394 rc_scheduled_event++; 395 } 396 val = rcin(CD180_RDR); 397 /* 398 Don't store PE if IGNPAR and BREAK if IGNBRK, 399 this hack allows "raw" tty optimization 400 works even if IGN* is set. 401 */ 402 if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break)) 403 || ((!(iack & (RCSR_PE|RCSR_FE)) 404 || !(rc->rc_tp->t_iflag & IGNPAR)) 405 && (!(iack & RCSR_Break) 406 || !(rc->rc_tp->t_iflag & IGNBRK)))) { 407 if ( (iack & (RCSR_PE|RCSR_FE)) 408 && (t_state & TS_CAN_BYPASS_L_RINT) 409 && ((iack & RCSR_FE) 410 || ((iack & RCSR_PE) 411 && (rc->rc_tp->t_iflag & INPCK)))) 412 val = 0; 413 else if (val != 0 && val == rc->rc_hotchar) 414 setsofttty(); 415 optr[0] = val; 416 optr[INPUT_FLAGS_SHIFT] = iack; 417 optr++; 418 rc_scheduled_event++; 419 } 420 } 421 } 422 rc->rc_iptr = optr; 423 rc->rc_flags |= RC_DORXFER; 424 } else 425 resid = ucnt; 426 /* Clear FIFO if necessary */ 427 while (resid-- > 0) { 428 if (!good_data) 429 iack = rcin(CD180_RCSR); 430 else 431 iack = 0; 432 if (iack & RCSR_Timeout) 433 break; 434 (void) rcin(CD180_RDR); 435 } 436 goto more_intrs; 437 } 438 if (bsr & RC_BSR_MOINT) { 439 iack = rcin(RC_PILR_MODEM); 440 if (iack != (GIVR_IT_MSCI | RC_FAKEID)) { 441 printf("rc%d: fake moint: %02x\n", unit, iack); 442 goto more_intrs; 443 } 444 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 445 iack = rcin(CD180_MCR); 446 rc->rc_msvr = rcin(CD180_MSVR); 447 rcout(CD180_MCR, 0); 448#ifdef RCDEBUG 449 printrcflags(rc, "moint"); 450#endif 451 if (rc->rc_flags & RC_CTSFLOW) { 452 if (rc->rc_msvr & MSVR_CTS) 453 rc->rc_flags |= RC_SEND_RDY; 454 else 455 rc->rc_flags &= ~RC_SEND_RDY; 456 } else 457 rc->rc_flags |= RC_SEND_RDY; 458 if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) { 459 rc_scheduled_event += LOTS_OF_EVENTS; 460 rc->rc_flags |= RC_MODCHG; 461 setsofttty(); 462 } 463 goto more_intrs; 464 } 465 if (bsr & RC_BSR_TXINT) { 466 iack = rcin(RC_PILR_TX); 467 if (iack != (GIVR_IT_TDI | RC_FAKEID)) { 468 printf("rc%d: fake txint: %02x\n", unit, iack); 469 goto more_intrs; 470 } 471 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 472 if ( (rc->rc_flags & RC_OSUSP) 473 || !(rc->rc_flags & RC_SEND_RDY) 474 ) 475 goto more_intrs; 476 /* Handle breaks and other stuff */ 477 if (rc->rc_pendcmd) { 478 rcout(CD180_COR2, rc->rc_cor2 |= COR2_ETC); 479 rcout(CD180_TDR, CD180_C_ESC); 480 rcout(CD180_TDR, rc->rc_pendcmd); 481 rcout(CD180_COR2, rc->rc_cor2 &= ~COR2_ETC); 482 rc->rc_pendcmd = 0; 483 goto more_intrs; 484 } 485 optr = rc->rc_optr; 486 resid = rc->rc_obufend - optr; 487 if (resid > CD180_NFIFO) 488 resid = CD180_NFIFO; 489 while (resid-- > 0) 490 rcout(CD180_TDR, *optr++); 491 rc->rc_optr = optr; 492 493 /* output completed? */ 494 if (optr >= rc->rc_obufend) { 495 rcout(CD180_IER, rc->rc_ier &= ~IER_TxRdy); 496#ifdef RCDEBUG 497 printf("rc%d/%d: output completed\n", unit, rc->rc_chan); 498#endif 499 if (!(rc->rc_flags & RC_DOXXFER)) { 500 rc_scheduled_event += LOTS_OF_EVENTS; 501 rc->rc_flags |= RC_DOXXFER; 502 setsofttty(); 503 } 504 } 505 } 506 more_intrs: 507 rcout(CD180_EOIR, 0); /* end of interrupt */ 508 rcout(RC_CTOUT, 0); 509 bsr = ~(rcin(RC_BSR)); 510 } 511} 512 513/* Feed characters to output buffer */ 514static void rc_start(tp) 515register struct tty *tp; 516{ 517 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 518 register int nec = rc->rc_rcb->rcb_addr, s; 519 520 if (rc->rc_flags & RC_OSBUSY) 521 return; 522 s = spltty(); 523 rc->rc_flags |= RC_OSBUSY; 524 disable_intr(); 525 if (tp->t_state & TS_TTSTOP) 526 rc->rc_flags |= RC_OSUSP; 527 else 528 rc->rc_flags &= ~RC_OSUSP; 529 /* Do RTS flow control stuff */ 530 if ( (rc->rc_flags & RC_RTSFLOW) 531 && (tp->t_state & TS_TBLOCK) 532 && (rc->rc_msvr & MSVR_RTS) 533 ) { 534 rcout(CD180_CAR, rc->rc_chan); 535 rcout(CD180_MSVR, rc->rc_msvr &= ~MSVR_RTS); 536 } else if (!(rc->rc_msvr & MSVR_RTS)) { 537 rcout(CD180_CAR, rc->rc_chan); 538 rcout(CD180_MSVR, rc->rc_msvr |= MSVR_RTS); 539 } 540 enable_intr(); 541 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 542 goto out; 543#ifdef RCDEBUG 544 printrcflags(rc, "rcstart"); 545#endif 546 ttwwakeup(tp); 547#ifdef RCDEBUG 548 printf("rcstart: outq = %d obuf = %d\n", 549 tp->t_outq.c_cc, rc->rc_obufend - rc->rc_optr); 550#endif 551 if (tp->t_state & TS_BUSY) 552 goto out; /* output still in progress ... */ 553 554 if (tp->t_outq.c_cc > 0) { 555 u_int ocnt; 556 557 tp->t_state |= TS_BUSY; 558 ocnt = q_to_b(&tp->t_outq, rc->rc_obuf, sizeof rc->rc_obuf); 559 disable_intr(); 560 rc->rc_optr = rc->rc_obuf; 561 rc->rc_obufend = rc->rc_optr + ocnt; 562 enable_intr(); 563 if (!(rc->rc_ier & IER_TxRdy)) { 564#ifdef RCDEBUG 565 printf("rc%d/%d: rcstart enable txint\n", rc->rc_rcb->rcb_unit, rc->rc_chan); 566#endif 567 rcout(CD180_CAR, rc->rc_chan); 568 rcout(CD180_IER, rc->rc_ier |= IER_TxRdy); 569 } 570 } 571out: 572 rc->rc_flags &= ~RC_OSBUSY; 573 (void) splx(s); 574} 575 576/* Handle delayed events. */ 577void rcpoll() 578{ 579 register struct rc_chans *rc; 580 register struct rc_softc *rcb; 581 register u_char *tptr, *eptr; 582 register struct tty *tp; 583 register int chan, icnt, nec, unit; 584 585 if (rc_scheduled_event == 0) 586 return; 587repeat: 588 for (unit = 0; unit < NRC; unit++) { 589 rcb = &rc_softc[unit]; 590 rc = rcb->rcb_baserc; 591 nec = rc->rc_rcb->rcb_addr; 592 for (chan = 0; chan < CD180_NCHAN; rc++, chan++) { 593 tp = rc->rc_tp; 594#ifdef RCDEBUG 595 if (rc->rc_flags & (RC_DORXFER|RC_DOXXFER|RC_MODCHG| 596 RC_WAS_BUFOVFL|RC_WAS_SILOVFL)) 597 printrcflags(rc, "rcevent"); 598#endif 599 if (rc->rc_flags & RC_WAS_BUFOVFL) { 600 disable_intr(); 601 rc->rc_flags &= ~RC_WAS_BUFOVFL; 602 rc_scheduled_event--; 603 enable_intr(); 604 printf("rc%d/%d: interrupt-level buffer overflow\n", 605 unit, chan); 606 } 607 if (rc->rc_flags & RC_WAS_SILOVFL) { 608 disable_intr(); 609 rc->rc_flags &= ~RC_WAS_SILOVFL; 610 rc_scheduled_event--; 611 enable_intr(); 612 printf("rc%d/%d: silo overflow\n", 613 unit, chan); 614 } 615 if (rc->rc_flags & RC_MODCHG) { 616 disable_intr(); 617 rc->rc_flags &= ~RC_MODCHG; 618 rc_scheduled_event -= LOTS_OF_EVENTS; 619 enable_intr(); 620 (*linesw[tp->t_line].l_modem)(tp, !!(rc->rc_msvr & MSVR_CD)); 621 } 622 if (rc->rc_flags & RC_DORXFER) { 623 disable_intr(); 624 rc->rc_flags &= ~RC_DORXFER; 625 eptr = rc->rc_iptr; 626 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) 627 tptr = &rc->rc_ibuf[RC_IBUFSIZE]; 628 else 629 tptr = rc->rc_ibuf; 630 icnt = eptr - tptr; 631 if (icnt > 0) { 632 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) { 633 rc->rc_iptr = rc->rc_ibuf; 634 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE]; 635 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER]; 636 } else { 637 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE]; 638 rc->rc_bufend = &rc->rc_ibuf[2 * RC_IBUFSIZE]; 639 rc->rc_hiwat = 640 &rc->rc_ibuf[RC_IBUFSIZE + RC_IHIGHWATER]; 641 } 642 if ( (rc->rc_flags & RC_RTSFLOW) 643 && (tp->t_state & TS_ISOPEN) 644 && !(tp->t_state & TS_TBLOCK) 645 && !(rc->rc_msvr & MSVR_RTS) 646 ) { 647 rcout(CD180_CAR, chan); 648 rcout(CD180_MSVR, 649 rc->rc_msvr |= MSVR_RTS); 650 } 651 rc_scheduled_event -= icnt; 652 } 653 enable_intr(); 654 655 if (icnt <= 0 || !(tp->t_state & TS_ISOPEN)) 656 goto done1; 657 658 if ( (tp->t_state & TS_CAN_BYPASS_L_RINT) 659 && !(tp->t_state & TS_LOCAL)) { 660 if ((tp->t_rawq.c_cc + icnt) >= RB_I_HIGH_WATER 661 && ((rc->rc_flags & RC_RTSFLOW) || (tp->t_iflag & IXOFF)) 662 && !(tp->t_state & TS_TBLOCK)) 663 ttyblock(tp); 664 tk_nin += icnt; 665 tk_rawcc += icnt; 666 tp->t_rawcc += icnt; 667 if (b_to_q(tptr, icnt, &tp->t_rawq)) 668 printf("rc%d/%d: tty-level buffer overflow\n", 669 unit, chan); 670 ttwakeup(tp); 671 if ((tp->t_state & TS_TTSTOP) && ((tp->t_iflag & IXANY) 672 || (tp->t_cc[VSTART] == tp->t_cc[VSTOP]))) { 673 tp->t_state &= ~TS_TTSTOP; 674 tp->t_lflag &= ~FLUSHO; 675 rc_start(tp); 676 } 677 } else { 678 for (; tptr < eptr; tptr++) 679 (*linesw[tp->t_line].l_rint) 680 (tptr[0] | 681 rc_rcsrt[tptr[INPUT_FLAGS_SHIFT] & 0xF], tp); 682 } 683done1: ; 684 } 685 if (rc->rc_flags & RC_DOXXFER) { 686 disable_intr(); 687 rc_scheduled_event -= LOTS_OF_EVENTS; 688 rc->rc_flags &= ~RC_DOXXFER; 689 rc->rc_tp->t_state &= ~TS_BUSY; 690 enable_intr(); 691 (*linesw[tp->t_line].l_start)(tp); 692 } 693 } 694 if (rc_scheduled_event == 0) 695 break; 696 } 697 if (rc_scheduled_event >= LOTS_OF_EVENTS) 698 goto repeat; 699} 700 701static void 702rcstop(tp, rw) 703 register struct tty *tp; 704 int rw; 705{ 706 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 707 u_char *tptr, *eptr; 708 709#ifdef RCDEBUG 710 printf("rc%d/%d: rcstop %s%s\n", rc->rc_rcb->rcb_unit, rc->rc_chan, 711 (rw & FWRITE)?"FWRITE ":"", (rw & FREAD)?"FREAD":""); 712#endif 713 if (rw & FWRITE) 714 rc_discard_output(rc); 715 disable_intr(); 716 if (rw & FREAD) { 717 rc->rc_flags &= ~RC_DORXFER; 718 eptr = rc->rc_iptr; 719 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) { 720 tptr = &rc->rc_ibuf[RC_IBUFSIZE]; 721 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE]; 722 } else { 723 tptr = rc->rc_ibuf; 724 rc->rc_iptr = rc->rc_ibuf; 725 } 726 rc_scheduled_event -= eptr - tptr; 727 } 728 if (tp->t_state & TS_TTSTOP) 729 rc->rc_flags |= RC_OSUSP; 730 else 731 rc->rc_flags &= ~RC_OSUSP; 732 enable_intr(); 733} 734 735static int 736rcopen(dev, flag, mode, p) 737 dev_t dev; 738 int flag, mode; 739 struct proc *p; 740{ 741 register struct rc_chans *rc; 742 register struct tty *tp; 743 int unit, nec, s, error = 0; 744 745 unit = GET_UNIT(dev); 746 if (unit >= NRC * CD180_NCHAN) 747 return ENXIO; 748 if (rc_softc[unit / CD180_NCHAN].rcb_probed != RC_ATTACHED) 749 return ENXIO; 750 rc = &rc_chans[unit]; 751 tp = rc->rc_tp; 752 nec = rc->rc_rcb->rcb_addr; 753#ifdef RCDEBUG 754 printf("rc%d/%d: rcopen: dev %x\n", rc->rc_rcb->rcb_unit, unit, dev); 755#endif 756 s = spltty(); 757 758again: 759 while (rc->rc_flags & RC_DTR_OFF) { 760 error = tsleep(&(rc->rc_dtrwait), TTIPRI | PCATCH, "rcdtr", 0); 761 if (error != 0) 762 goto out; 763 } 764 if (tp->t_state & TS_ISOPEN) { 765 if (CALLOUT(dev)) { 766 if (!(rc->rc_flags & RC_ACTOUT)) { 767 error = EBUSY; 768 goto out; 769 } 770 } else { 771 if (rc->rc_flags & RC_ACTOUT) { 772 if (flag & O_NONBLOCK) { 773 error = EBUSY; 774 goto out; 775 } 776 error = tsleep(&rc->rc_rcb, 777 TTIPRI|PCATCH, "rcbi", 0); 778 if (error) 779 goto out; 780 goto again; 781 } 782 } 783 if (tp->t_state & TS_XCLUDE && 784 suser(p)) { 785 error = EBUSY; 786 goto out; 787 } 788 } else { 789 tp->t_oproc = rc_start; 790 tp->t_param = rc_param; 791 tp->t_dev = dev; 792 793 if (CALLOUT(dev)) 794 tp->t_cflag |= CLOCAL; 795 else 796 tp->t_cflag &= ~CLOCAL; 797 798 error = rc_param(tp, &tp->t_termios); 799 if (error) 800 goto out; 801 (void) rc_modctl(rc, TIOCM_RTS|TIOCM_DTR, DMSET); 802 803 if ((rc->rc_msvr & MSVR_CD) || CALLOUT(dev)) 804 (*linesw[tp->t_line].l_modem)(tp, 1); 805 } 806 if (!(tp->t_state & TS_CARR_ON) && !CALLOUT(dev) 807 && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { 808 rc->rc_dcdwaits++; 809 error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "rcdcd", 0); 810 rc->rc_dcdwaits--; 811 if (error != 0) 812 goto out; 813 goto again; 814 } 815 error = (*linesw[tp->t_line].l_open)(dev, tp); 816 disc_optim(tp, &tp->t_termios, rc); 817 if ((tp->t_state & TS_ISOPEN) && CALLOUT(dev)) 818 rc->rc_flags |= RC_ACTOUT; 819out: 820 (void) splx(s); 821 822 if(rc->rc_dcdwaits == 0 && !(tp->t_state & TS_ISOPEN)) 823 rc_hardclose(rc); 824 825 return error; 826} 827 828static int 829rcclose(dev, flag, mode, p) 830 dev_t dev; 831 int flag, mode; 832 struct proc *p; 833{ 834 register struct rc_chans *rc; 835 register struct tty *tp; 836 int s, unit = GET_UNIT(dev); 837 838 if (unit >= NRC * CD180_NCHAN) 839 return ENXIO; 840 rc = &rc_chans[unit]; 841 tp = rc->rc_tp; 842#ifdef RCDEBUG 843 printf("rc%d/%d: rcclose dev %x\n", rc->rc_rcb->rcb_unit, unit, dev); 844#endif 845 s = spltty(); 846 (*linesw[tp->t_line].l_close)(tp, flag); 847 disc_optim(tp, &tp->t_termios, rc); 848 rcstop(tp, FREAD | FWRITE); 849 rc_hardclose(rc); 850 ttyclose(tp); 851 splx(s); 852 return 0; 853} 854 855static void rc_hardclose(rc) 856register struct rc_chans *rc; 857{ 858 register int s, nec = rc->rc_rcb->rcb_addr; 859 register struct tty *tp = rc->rc_tp; 860 861 s = spltty(); 862 rcout(CD180_CAR, rc->rc_chan); 863 864 /* Disable rx/tx intrs */ 865 rcout(CD180_IER, rc->rc_ier = 0); 866 if ( (tp->t_cflag & HUPCL) 867 || (!(rc->rc_flags & RC_ACTOUT) 868 && !(rc->rc_msvr & MSVR_CD) 869 && !(tp->t_cflag & CLOCAL)) 870 || !(tp->t_state & TS_ISOPEN) 871 ) { 872 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan); 873 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 874 (void) rc_modctl(rc, TIOCM_RTS, DMSET); 875 if (rc->rc_dtrwait) { 876 timeout(rc_dtrwakeup, rc, rc->rc_dtrwait); 877 rc->rc_flags |= RC_DTR_OFF; 878 } 879 } 880 rc->rc_flags &= ~RC_ACTOUT; 881 wakeup((caddr_t) &rc->rc_rcb); /* wake bi */ 882 wakeup(TSA_CARR_ON(tp)); 883 (void) splx(s); 884} 885 886/* Read from line */ 887static int 888rcread(dev, uio, flag) 889 dev_t dev; 890 struct uio *uio; 891 int flag; 892{ 893 struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp; 894 895 return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); 896} 897 898/* Write to line */ 899static int 900rcwrite(dev, uio, flag) 901 dev_t dev; 902 struct uio *uio; 903 int flag; 904{ 905 struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp; 906 907 return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); 908} 909 910/* Reset the bastard */ 911static void rc_hwreset(unit, nec, chipid) 912 register int unit, nec; 913 unsigned int chipid; 914{ 915 CCRCMD(unit, -1, CCR_HWRESET); /* Hardware reset */ 916 DELAY(20000); 917 WAITFORCCR(unit, -1); 918 919 rcout(RC_CTOUT, 0); /* Clear timeout */ 920 rcout(CD180_GIVR, chipid); 921 rcout(CD180_GICR, 0); 922 923 /* Set Prescaler Registers (1 msec) */ 924 rcout(CD180_PPRL, ((RC_OSCFREQ + 999) / 1000) & 0xFF); 925 rcout(CD180_PPRH, ((RC_OSCFREQ + 999) / 1000) >> 8); 926 927 /* Initialize Priority Interrupt Level Registers */ 928 rcout(CD180_PILR1, RC_PILR_MODEM); 929 rcout(CD180_PILR2, RC_PILR_TX); 930 rcout(CD180_PILR3, RC_PILR_RX); 931 932 /* Reset DTR */ 933 rcout(RC_DTREG, ~0); 934} 935 936/* Set channel parameters */ 937static int rc_param(tp, ts) 938 register struct tty *tp; 939 struct termios *ts; 940{ 941 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 942 register int nec = rc->rc_rcb->rcb_addr; 943 int idivs, odivs, s, val, cflag, iflag, lflag, inpflow; 944 945 if ( ts->c_ospeed < 0 || ts->c_ospeed > 76800 946 || ts->c_ispeed < 0 || ts->c_ispeed > 76800 947 ) 948 return (EINVAL); 949 if (ts->c_ispeed == 0) 950 ts->c_ispeed = ts->c_ospeed; 951 odivs = RC_BRD(ts->c_ospeed); 952 idivs = RC_BRD(ts->c_ispeed); 953 954 s = spltty(); 955 956 /* Select channel */ 957 rcout(CD180_CAR, rc->rc_chan); 958 959 /* If speed == 0, hangup line */ 960 if (ts->c_ospeed == 0) { 961 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan); 962 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 963 (void) rc_modctl(rc, TIOCM_DTR, DMBIC); 964 } 965 966 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 967 cflag = ts->c_cflag; 968 iflag = ts->c_iflag; 969 lflag = ts->c_lflag; 970 971 if (idivs > 0) { 972 rcout(CD180_RBPRL, idivs & 0xFF); 973 rcout(CD180_RBPRH, idivs >> 8); 974 } 975 if (odivs > 0) { 976 rcout(CD180_TBPRL, odivs & 0xFF); 977 rcout(CD180_TBPRH, odivs >> 8); 978 } 979 980 /* set timeout value */ 981 if (ts->c_ispeed > 0) { 982 int itm = ts->c_ispeed > 2400 ? 5 : 10000 / ts->c_ispeed + 1; 983 984 if ( !(lflag & ICANON) 985 && ts->c_cc[VMIN] != 0 && ts->c_cc[VTIME] != 0 986 && ts->c_cc[VTIME] * 10 > itm) 987 itm = ts->c_cc[VTIME] * 10; 988 989 rcout(CD180_RTPR, itm <= 255 ? itm : 255); 990 } 991 992 switch (cflag & CSIZE) { 993 case CS5: val = COR1_5BITS; break; 994 case CS6: val = COR1_6BITS; break; 995 case CS7: val = COR1_7BITS; break; 996 default: 997 case CS8: val = COR1_8BITS; break; 998 } 999 if (cflag & PARENB) { 1000 val |= COR1_NORMPAR; 1001 if (cflag & PARODD) 1002 val |= COR1_ODDP; 1003 if (!(cflag & INPCK)) 1004 val |= COR1_Ignore; 1005 } else 1006 val |= COR1_Ignore; 1007 if (cflag & CSTOPB) 1008 val |= COR1_2SB; 1009 rcout(CD180_COR1, val); 1010 1011 /* Set FIFO threshold */ 1012 val = ts->c_ospeed <= 4800 ? 1 : CD180_NFIFO / 2; 1013 inpflow = 0; 1014 if ( (iflag & IXOFF) 1015 && ( ts->c_cc[VSTOP] != _POSIX_VDISABLE 1016 && ( ts->c_cc[VSTART] != _POSIX_VDISABLE 1017 || (iflag & IXANY) 1018 ) 1019 ) 1020 ) { 1021 inpflow = 1; 1022 val |= COR3_SCDE|COR3_FCT; 1023 } 1024 rcout(CD180_COR3, val); 1025 1026 /* Initialize on-chip automatic flow control */ 1027 val = 0; 1028 rc->rc_flags &= ~(RC_CTSFLOW|RC_SEND_RDY); 1029 if (cflag & CCTS_OFLOW) { 1030 rc->rc_flags |= RC_CTSFLOW; 1031 val |= COR2_CtsAE; 1032 } else 1033 rc->rc_flags |= RC_SEND_RDY; 1034 if (tp->t_state & TS_TTSTOP) 1035 rc->rc_flags |= RC_OSUSP; 1036 else 1037 rc->rc_flags &= ~RC_OSUSP; 1038 if (cflag & CRTS_IFLOW) 1039 rc->rc_flags |= RC_RTSFLOW; 1040 else 1041 rc->rc_flags &= ~RC_RTSFLOW; 1042 1043 if (inpflow) { 1044 if (ts->c_cc[VSTART] != _POSIX_VDISABLE) 1045 rcout(CD180_SCHR1, ts->c_cc[VSTART]); 1046 rcout(CD180_SCHR2, ts->c_cc[VSTOP]); 1047 val |= COR2_TxIBE; 1048 if (iflag & IXANY) 1049 val |= COR2_IXM; 1050 } 1051 1052 rcout(CD180_COR2, rc->rc_cor2 = val); 1053 1054 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, 1055 CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); 1056 1057 disc_optim(tp, ts, rc); 1058 1059 /* modem ctl */ 1060 val = cflag & CLOCAL ? 0 : MCOR1_CDzd; 1061 if (cflag & CCTS_OFLOW) 1062 val |= MCOR1_CTSzd; 1063 rcout(CD180_MCOR1, val); 1064 1065 val = cflag & CLOCAL ? 0 : MCOR2_CDod; 1066 if (cflag & CCTS_OFLOW) 1067 val |= MCOR2_CTSod; 1068 rcout(CD180_MCOR2, val); 1069 1070 /* enable i/o and interrupts */ 1071 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, 1072 CCR_XMTREN | ((cflag & CREAD) ? CCR_RCVREN : CCR_RCVRDIS)); 1073 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 1074 1075 rc->rc_ier = cflag & CLOCAL ? 0 : IER_CD; 1076 if (cflag & CCTS_OFLOW) 1077 rc->rc_ier |= IER_CTS; 1078 if (cflag & CREAD) 1079 rc->rc_ier |= IER_RxData; 1080 if (tp->t_state & TS_BUSY) 1081 rc->rc_ier |= IER_TxRdy; 1082 if (ts->c_ospeed != 0) 1083 rc_modctl(rc, TIOCM_DTR, DMBIS); 1084 if ((cflag & CCTS_OFLOW) && (rc->rc_msvr & MSVR_CTS)) 1085 rc->rc_flags |= RC_SEND_RDY; 1086 rcout(CD180_IER, rc->rc_ier); 1087 (void) splx(s); 1088 return 0; 1089} 1090 1091/* Re-initialize board after bogus interrupts */ 1092static void rc_reinit(rcb) 1093struct rc_softc *rcb; 1094{ 1095 register struct rc_chans *rc, *rce; 1096 register int nec; 1097 1098 nec = rcb->rcb_addr; 1099 rc_hwreset(rcb->rcb_unit, nec, RC_FAKEID); 1100 rc = &rc_chans[rcb->rcb_unit * CD180_NCHAN]; 1101 rce = rc + CD180_NCHAN; 1102 for (; rc < rce; rc++) 1103 (void) rc_param(rc->rc_tp, &rc->rc_tp->t_termios); 1104} 1105 1106static int 1107rcioctl(dev, cmd, data, flag, p) 1108dev_t dev; 1109u_long cmd; 1110int flag; 1111caddr_t data; 1112struct proc *p; 1113{ 1114 register struct rc_chans *rc = &rc_chans[GET_UNIT(dev)]; 1115 register int s, error; 1116 struct tty *tp = rc->rc_tp; 1117 1118 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 1119 if (error != ENOIOCTL) 1120 return (error); 1121 error = ttioctl(tp, cmd, data, flag); 1122 disc_optim(tp, &tp->t_termios, rc); 1123 if (error != ENOIOCTL) 1124 return (error); 1125 s = spltty(); 1126 1127 switch (cmd) { 1128 case TIOCSBRK: 1129 rc->rc_pendcmd = CD180_C_SBRK; 1130 break; 1131 1132 case TIOCCBRK: 1133 rc->rc_pendcmd = CD180_C_EBRK; 1134 break; 1135 1136 case TIOCSDTR: 1137 (void) rc_modctl(rc, TIOCM_DTR, DMBIS); 1138 break; 1139 1140 case TIOCCDTR: 1141 (void) rc_modctl(rc, TIOCM_DTR, DMBIC); 1142 break; 1143 1144 case TIOCMGET: 1145 *(int *) data = rc_modctl(rc, 0, DMGET); 1146 break; 1147 1148 case TIOCMSET: 1149 (void) rc_modctl(rc, *(int *) data, DMSET); 1150 break; 1151 1152 case TIOCMBIC: 1153 (void) rc_modctl(rc, *(int *) data, DMBIC); 1154 break; 1155 1156 case TIOCMBIS: 1157 (void) rc_modctl(rc, *(int *) data, DMBIS); 1158 break; 1159 1160 case TIOCMSDTRWAIT: 1161 error = suser(p); 1162 if (error != 0) { 1163 splx(s); 1164 return (error); 1165 } 1166 rc->rc_dtrwait = *(int *)data * hz / 100; 1167 break; 1168 1169 case TIOCMGDTRWAIT: 1170 *(int *)data = rc->rc_dtrwait * 100 / hz; 1171 break; 1172 1173 default: 1174 (void) splx(s); 1175 return ENOTTY; 1176 } 1177 (void) splx(s); 1178 return 0; 1179} 1180 1181 1182/* Modem control routines */ 1183 1184static int rc_modctl(rc, bits, cmd) 1185register struct rc_chans *rc; 1186int bits, cmd; 1187{ 1188 register int nec = rc->rc_rcb->rcb_addr; 1189 u_char *dtr = &rc->rc_rcb->rcb_dtr, msvr; 1190 1191 rcout(CD180_CAR, rc->rc_chan); 1192 1193 switch (cmd) { 1194 case DMSET: 1195 rcout(RC_DTREG, (bits & TIOCM_DTR) ? 1196 ~(*dtr |= 1 << rc->rc_chan) : 1197 ~(*dtr &= ~(1 << rc->rc_chan))); 1198 msvr = rcin(CD180_MSVR); 1199 if (bits & TIOCM_RTS) 1200 msvr |= MSVR_RTS; 1201 else 1202 msvr &= ~MSVR_RTS; 1203 if (bits & TIOCM_DTR) 1204 msvr |= MSVR_DTR; 1205 else 1206 msvr &= ~MSVR_DTR; 1207 rcout(CD180_MSVR, msvr); 1208 break; 1209 1210 case DMBIS: 1211 if (bits & TIOCM_DTR) 1212 rcout(RC_DTREG, ~(*dtr |= 1 << rc->rc_chan)); 1213 msvr = rcin(CD180_MSVR); 1214 if (bits & TIOCM_RTS) 1215 msvr |= MSVR_RTS; 1216 if (bits & TIOCM_DTR) 1217 msvr |= MSVR_DTR; 1218 rcout(CD180_MSVR, msvr); 1219 break; 1220 1221 case DMGET: 1222 bits = TIOCM_LE; 1223 msvr = rc->rc_msvr = rcin(CD180_MSVR); 1224 1225 if (msvr & MSVR_RTS) 1226 bits |= TIOCM_RTS; 1227 if (msvr & MSVR_CTS) 1228 bits |= TIOCM_CTS; 1229 if (msvr & MSVR_DSR) 1230 bits |= TIOCM_DSR; 1231 if (msvr & MSVR_DTR) 1232 bits |= TIOCM_DTR; 1233 if (msvr & MSVR_CD) 1234 bits |= TIOCM_CD; 1235 if (~rcin(RC_RIREG) & (1 << rc->rc_chan)) 1236 bits |= TIOCM_RI; 1237 return bits; 1238 1239 case DMBIC: 1240 if (bits & TIOCM_DTR) 1241 rcout(RC_DTREG, ~(*dtr &= ~(1 << rc->rc_chan))); 1242 msvr = rcin(CD180_MSVR); 1243 if (bits & TIOCM_RTS) 1244 msvr &= ~MSVR_RTS; 1245 if (bits & TIOCM_DTR) 1246 msvr &= ~MSVR_DTR; 1247 rcout(CD180_MSVR, msvr); 1248 break; 1249 } 1250 rc->rc_msvr = rcin(CD180_MSVR); 1251 return 0; 1252} 1253 1254/* Test the board. */ 1255int rc_test(nec, unit) 1256 register int nec; 1257 int unit; 1258{ 1259 int chan = 0; 1260 int i = 0, rcnt, old_level; 1261 unsigned int iack, chipid; 1262 unsigned short divs; 1263 static u_char ctest[] = "\377\125\252\045\244\0\377"; 1264#define CTLEN 8 1265#define ERR(s) { \ 1266 printf("rc%d: ", unit); printf s ; printf("\n"); \ 1267 (void) splx(old_level); return 1; } 1268 1269 struct rtest { 1270 u_char txbuf[CD180_NFIFO]; /* TX buffer */ 1271 u_char rxbuf[CD180_NFIFO]; /* RX buffer */ 1272 int rxptr; /* RX pointer */ 1273 int txptr; /* TX pointer */ 1274 } tchans[CD180_NCHAN]; 1275 1276 old_level = spltty(); 1277 1278 chipid = RC_FAKEID; 1279 1280 /* First, reset board to inital state */ 1281 rc_hwreset(unit, nec, chipid); 1282 1283 divs = RC_BRD(19200); 1284 1285 /* Initialize channels */ 1286 for (chan = 0; chan < CD180_NCHAN; chan++) { 1287 1288 /* Select and reset channel */ 1289 rcout(CD180_CAR, chan); 1290 CCRCMD(unit, chan, CCR_ResetChan); 1291 WAITFORCCR(unit, chan); 1292 1293 /* Set speed */ 1294 rcout(CD180_RBPRL, divs & 0xFF); 1295 rcout(CD180_RBPRH, divs >> 8); 1296 rcout(CD180_TBPRL, divs & 0xFF); 1297 rcout(CD180_TBPRH, divs >> 8); 1298 1299 /* set timeout value */ 1300 rcout(CD180_RTPR, 0); 1301 1302 /* Establish local loopback */ 1303 rcout(CD180_COR1, COR1_NOPAR | COR1_8BITS | COR1_1SB); 1304 rcout(CD180_COR2, COR2_LLM); 1305 rcout(CD180_COR3, CD180_NFIFO); 1306 CCRCMD(unit, chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); 1307 CCRCMD(unit, chan, CCR_RCVREN | CCR_XMTREN); 1308 WAITFORCCR(unit, chan); 1309 rcout(CD180_MSVR, MSVR_RTS); 1310 1311 /* Fill TXBUF with test data */ 1312 for (i = 0; i < CD180_NFIFO; i++) { 1313 tchans[chan].txbuf[i] = ctest[i]; 1314 tchans[chan].rxbuf[i] = 0; 1315 } 1316 tchans[chan].txptr = tchans[chan].rxptr = 0; 1317 1318 /* Now, start transmit */ 1319 rcout(CD180_IER, IER_TxMpty|IER_RxData); 1320 } 1321 /* Pseudo-interrupt poll stuff */ 1322 for (rcnt = 10000; rcnt-- > 0; rcnt--) { 1323 i = ~(rcin(RC_BSR)); 1324 if (i & RC_BSR_TOUT) 1325 ERR(("BSR timeout bit set\n")) 1326 else if (i & RC_BSR_TXINT) { 1327 iack = rcin(RC_PILR_TX); 1328 if (iack != (GIVR_IT_TDI | chipid)) 1329 ERR(("Bad TX intr ack (%02x != %02x)\n", 1330 iack, GIVR_IT_TDI | chipid)); 1331 chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH; 1332 /* If no more data to transmit, disable TX intr */ 1333 if (tchans[chan].txptr >= CD180_NFIFO) { 1334 iack = rcin(CD180_IER); 1335 rcout(CD180_IER, iack & ~IER_TxMpty); 1336 } else { 1337 for (iack = tchans[chan].txptr; 1338 iack < CD180_NFIFO; iack++) 1339 rcout(CD180_TDR, 1340 tchans[chan].txbuf[iack]); 1341 tchans[chan].txptr = iack; 1342 } 1343 rcout(CD180_EOIR, 0); 1344 } else if (i & RC_BSR_RXINT) { 1345 u_char ucnt; 1346 1347 iack = rcin(RC_PILR_RX); 1348 if (iack != (GIVR_IT_RGDI | chipid) && 1349 iack != (GIVR_IT_REI | chipid)) 1350 ERR(("Bad RX intr ack (%02x != %02x)\n", 1351 iack, GIVR_IT_RGDI | chipid)) 1352 chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH; 1353 ucnt = rcin(CD180_RDCR) & 0xF; 1354 while (ucnt-- > 0) { 1355 iack = rcin(CD180_RCSR); 1356 if (iack & RCSR_Timeout) 1357 break; 1358 if (iack & 0xF) 1359 ERR(("Bad char chan %d (RCSR = %02X)\n", 1360 chan, iack)) 1361 if (tchans[chan].rxptr > CD180_NFIFO) 1362 ERR(("Got extra chars chan %d\n", 1363 chan)) 1364 tchans[chan].rxbuf[tchans[chan].rxptr++] = 1365 rcin(CD180_RDR); 1366 } 1367 rcout(CD180_EOIR, 0); 1368 } 1369 rcout(RC_CTOUT, 0); 1370 for (iack = chan = 0; chan < CD180_NCHAN; chan++) 1371 if (tchans[chan].rxptr >= CD180_NFIFO) 1372 iack++; 1373 if (iack == CD180_NCHAN) 1374 break; 1375 } 1376 for (chan = 0; chan < CD180_NCHAN; chan++) { 1377 /* Select and reset channel */ 1378 rcout(CD180_CAR, chan); 1379 CCRCMD(unit, chan, CCR_ResetChan); 1380 } 1381 1382 if (!rcnt) 1383 ERR(("looses characters during local loopback\n")) 1384 /* Now, check data */ 1385 for (chan = 0; chan < CD180_NCHAN; chan++) 1386 for (i = 0; i < CD180_NFIFO; i++) 1387 if (ctest[i] != tchans[chan].rxbuf[i]) 1388 ERR(("data mismatch chan %d ptr %d (%d != %d)\n", 1389 chan, i, ctest[i], tchans[chan].rxbuf[i])) 1390 (void) splx(old_level); 1391 return 0; 1392} 1393 1394#ifdef RCDEBUG 1395static void printrcflags(rc, comment) 1396struct rc_chans *rc; 1397char *comment; 1398{ 1399 u_short f = rc->rc_flags; 1400 register int nec = rc->rc_rcb->rcb_addr; 1401 1402 printf("rc%d/%d: %s flags: %s%s%s%s%s%s%s%s%s%s%s%s\n", 1403 rc->rc_rcb->rcb_unit, rc->rc_chan, comment, 1404 (f & RC_DTR_OFF)?"DTR_OFF " :"", 1405 (f & RC_ACTOUT) ?"ACTOUT " :"", 1406 (f & RC_RTSFLOW)?"RTSFLOW " :"", 1407 (f & RC_CTSFLOW)?"CTSFLOW " :"", 1408 (f & RC_DORXFER)?"DORXFER " :"", 1409 (f & RC_DOXXFER)?"DOXXFER " :"", 1410 (f & RC_MODCHG) ?"MODCHG " :"", 1411 (f & RC_OSUSP) ?"OSUSP " :"", 1412 (f & RC_OSBUSY) ?"OSBUSY " :"", 1413 (f & RC_WAS_BUFOVFL) ?"BUFOVFL " :"", 1414 (f & RC_WAS_SILOVFL) ?"SILOVFL " :"", 1415 (f & RC_SEND_RDY) ?"SEND_RDY":""); 1416 1417 rcout(CD180_CAR, rc->rc_chan); 1418 1419 printf("rc%d/%d: msvr %02x ier %02x ccsr %02x\n", 1420 rc->rc_rcb->rcb_unit, rc->rc_chan, 1421 rcin(CD180_MSVR), 1422 rcin(CD180_IER), 1423 rcin(CD180_CCSR)); 1424} 1425#endif /* RCDEBUG */ 1426 1427static struct tty * 1428rcdevtotty(dev) 1429 dev_t dev; 1430{ 1431 int unit; 1432 1433 unit = GET_UNIT(dev); 1434 if (unit >= NRC * CD180_NCHAN) 1435 return NULL; 1436 return (&rc_tty[unit]); 1437} 1438 1439static void 1440rc_dtrwakeup(chan) 1441 void *chan; 1442{ 1443 struct rc_chans *rc; 1444 1445 rc = (struct rc_chans *)chan; 1446 rc->rc_flags &= ~RC_DTR_OFF; 1447 wakeup(&rc->rc_dtrwait); 1448} 1449 1450static void 1451rc_discard_output(rc) 1452 struct rc_chans *rc; 1453{ 1454 disable_intr(); 1455 if (rc->rc_flags & RC_DOXXFER) { 1456 rc_scheduled_event -= LOTS_OF_EVENTS; 1457 rc->rc_flags &= ~RC_DOXXFER; 1458 } 1459 rc->rc_optr = rc->rc_obufend; 1460 rc->rc_tp->t_state &= ~TS_BUSY; 1461 enable_intr(); 1462 ttwwakeup(rc->rc_tp); 1463} 1464 1465static void 1466rc_wakeup(chan) 1467 void *chan; 1468{ 1469 timeout(rc_wakeup, (caddr_t)NULL, 1); 1470 1471 if (rc_scheduled_event != 0) { 1472 int s; 1473 1474 s = splsofttty(); 1475 rcpoll(); 1476 splx(s); 1477 } 1478} 1479 1480static void 1481disc_optim(tp, t, rc) 1482 struct tty *tp; 1483 struct termios *t; 1484 struct rc_chans *rc; 1485{ 1486 1487 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) 1488 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) 1489 && (!(t->c_iflag & PARMRK) 1490 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) 1491 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) 1492 && linesw[tp->t_line].l_rint == ttyinput) 1493 tp->t_state |= TS_CAN_BYPASS_L_RINT; 1494 else 1495 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 1496 rc->rc_hotchar = linesw[tp->t_line].l_hotchar; 1497} 1498 1499static void 1500rc_wait0(nec, unit, chan, line) 1501 int nec, unit, chan, line; 1502{ 1503 int rcnt; 1504 1505 for (rcnt = 50; rcnt && rcin(CD180_CCR); rcnt--) 1506 DELAY(30); 1507 if (rcnt == 0) 1508 printf("rc%d/%d: channel command timeout, rc.c line: %d\n", 1509 unit, chan, line); 1510} 1511 1512#endif /* NRC */ 1513