rc.c revision 9639
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#if NRC > 0 35 36/*#define RCDEBUG*/ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/ioctl.h> 41#include <sys/tty.h> 42#include <sys/proc.h> 43#include <sys/user.h> 44#include <sys/conf.h> 45#include <sys/dkstat.h> 46#include <sys/file.h> 47#include <sys/uio.h> 48#include <sys/kernel.h> 49#include <sys/syslog.h> 50#include <sys/devconf.h> 51 52#include <machine/clock.h> 53 54#include <i386/isa/isa.h> 55#include <i386/isa/isa_device.h> 56#include <i386/isa/sioreg.h> 57 58#include <i386/isa/ic/cd180.h> 59#include <i386/isa/rcreg.h> 60 61/* Prototypes */ 62int rcprobe __P((struct isa_device *)); 63int rcattach __P((struct isa_device *)); 64 65int rcopen __P((dev_t, int, int, struct proc *)); 66int rcclose __P((dev_t, int, int, struct proc *)); 67int rcread __P((dev_t, struct uio *, int)); 68int rcwrite __P((dev_t, struct uio *, int)); 69void rcintr __P((int)); 70void rcpoll __P((void)); 71void rcstop __P((struct tty *, int)); 72int rcioctl __P((dev_t, int, caddr_t, int, struct proc *)); 73 74#define rcin(port) RC_IN (nec, port) 75#define rcout(port,v) RC_OUT (nec, port, v) 76 77#define WAITFORCCR(u,c) rc_wait0(nec, (u), (c), __LINE__) 78#define CCRCMD(u,c,cmd) WAITFORCCR((u), (c)); rcout(CD180_CCR, (cmd)) 79 80#define RC_IBUFSIZE 256 81#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE) 82#define RC_OBUFSIZE 512 83#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4) 84#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE) 85#define LOTS_OF_EVENTS 64 86 87#define RC_FAKEID 0x10 88 89#define RC_PROBED 1 90#define RC_ATTACHED 2 91 92#define GET_UNIT(dev) (minor(dev) & 0x3F) 93#define CALLOUT(dev) (minor(dev) & 0x80) 94 95/* For isa routines */ 96struct isa_driver rcdriver = { 97 rcprobe, rcattach, "rc" 98}; 99 100/* Per-board structure */ 101static struct rc_softc { 102 u_int rcb_probed; /* 1 - probed, 2 - attached */ 103 u_int rcb_addr; /* Base I/O addr */ 104 u_int rcb_unit; /* unit # */ 105 u_char rcb_dtr; /* DTR status */ 106 struct rc_chans *rcb_baserc; /* base rc ptr */ 107} rc_softc[NRC]; 108 109/* Per-channel structure */ 110static struct rc_chans { 111 struct rc_softc *rc_rcb; /* back ptr */ 112 u_short rc_flags; /* Misc. flags */ 113 int rc_chan; /* Channel # */ 114 u_char rc_ier; /* intr. enable reg */ 115 u_char rc_msvr; /* modem sig. status */ 116 u_char rc_cor2; /* options reg */ 117 u_char rc_pendcmd; /* special cmd pending */ 118 u_int rc_dtrwait; /* dtr timeout */ 119 u_int rc_dcdwaits; /* how many waits DCD in open */ 120 u_char rc_hotchar; /* end packed optimize */ 121 struct tty *rc_tp; /* tty struct */ 122 u_char *rc_iptr; /* Chars input buffer */ 123 u_char *rc_hiwat; /* hi-water mark */ 124 u_char *rc_bufend; /* end of buffer */ 125 u_char *rc_optr; /* ptr in output buf */ 126 u_char *rc_obufend; /* end of output buf */ 127 u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */ 128 u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */ 129} rc_chans[NRC * CD180_NCHAN]; 130 131static int rc_scheduled_event = 0; 132 133/* for pstat -t */ 134struct tty rc_tty[NRC * CD180_NCHAN]; 135int nrc_tty = NRC * CD180_NCHAN; 136 137/* Flags */ 138#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */ 139#define RC_ACTOUT 0x0002 /* Dial-out port active */ 140#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */ 141#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */ 142#define RC_DORXFER 0x0010 /* RXFER event planned */ 143#define RC_DOXXFER 0x0020 /* XXFER event planned */ 144#define RC_MODCHG 0x0040 /* Modem status changed */ 145#define RC_OSUSP 0x0080 /* Output suspended */ 146#define RC_OSBUSY 0x0100 /* start() routine in progress */ 147#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */ 148#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */ 149#define RC_SEND_RDY 0x0800 /* ready to send */ 150 151static struct speedtab rc_speedtab[] = { 152 0, 0, 153 50, RC_BRD(50), 154 75, RC_BRD(75), 155 110, RC_BRD(110), 156 134, RC_BRD(134), 157 150, RC_BRD(150), 158 200, RC_BRD(200), 159 300, RC_BRD(300), 160 600, RC_BRD(600), 161 1200, RC_BRD(1200), 162 1800, RC_BRD(1800), 163 2400, RC_BRD(2400), 164 4800, RC_BRD(4800), 165 9600, RC_BRD(9600), 166 19200, RC_BRD(19200), 167 38400, RC_BRD(38400), 168 57600, RC_BRD(57600), 169 /* real max value is 76800 with 9.8304 MHz clock */ 170 -1, -1 171}; 172 173/* Table for translation of RCSR status bits to internal form */ 174static int rc_rcsrt[16] = { 175 0, TTY_OE, TTY_FE, 176 TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE, 177 TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI, 178 TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE, 179 TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE, 180 TTY_BI|TTY_PE|TTY_FE|TTY_OE 181}; 182 183/* Static prototypes */ 184static void rc_hwreset __P((int, int, unsigned int)); 185static int rc_test __P((int, int)); 186static void rc_discard_output __P((struct rc_chans *)); 187static void rc_hardclose __P((struct rc_chans *)); 188static int rc_modctl __P((struct rc_chans *, int, int)); 189static void rc_start __P((struct tty *)); 190static int rc_param __P((struct tty *, struct termios *)); 191static void rc_registerdev __P((struct isa_device *id)); 192static void rc_reinit __P((struct rc_softc *)); 193#ifdef RCDEBUG 194static void printrcflags(); 195#endif 196static timeout_t rc_dtrwakeup; 197static timeout_t rc_wakeup; 198static void disc_optim __P((struct tty *tp, struct termios *t, struct rc_chans *)); 199static void rc_wait0 __P((int nec, int unit, int chan, int line)); 200 201/**********************************************/ 202 203/* Quick device probing */ 204int rcprobe(dvp) 205 struct isa_device *dvp; 206{ 207 int irq = ffs(dvp->id_irq) - 1; 208 register int nec = dvp->id_iobase; 209 210 if (dvp->id_unit > NRC) 211 return 0; 212 if (!RC_VALIDADDR(nec)) { 213 printf("rc%d: illegal base address %x\n", nec); 214 return 0; 215 } 216 if (!RC_VALIDIRQ(irq)) { 217 printf("rc%d: illegal IRQ value %d\n", irq); 218 return 0; 219 } 220 rcout(CD180_PPRL, 0x22); /* Random values to Prescale reg. */ 221 rcout(CD180_PPRH, 0x11); 222 if (rcin(CD180_PPRL) != 0x22 || rcin(CD180_PPRH) != 0x11) 223 return 0; 224 /* Now, test the board more thoroughly, with diagnostic */ 225 if (rc_test(nec, dvp->id_unit)) 226 return 0; 227 rc_softc[dvp->id_unit].rcb_probed = RC_PROBED; 228 229 return 0xF; 230} 231 232static struct kern_devconf kdc_rc[NRC] = { { 233 0, 0, 0, /* filled in by dev_attach */ 234 "rc", 0, { MDDT_ISA, 0, "tty" }, 235 isa_generic_externalize, 0, 0, ISA_EXTERNALLEN, 236 &kdc_isa0, /* parent */ 237 0, /* parentdata */ 238 DC_UNCONFIGURED, /* state */ 239 "RISCom/8 multiport card", 240 DC_CLS_SERIAL /* class */ 241} }; 242 243static void 244rc_registerdev(id) 245 struct isa_device *id; 246{ 247 int unit; 248 249 unit = id->id_unit; 250 if (unit != 0) 251 kdc_rc[unit] = kdc_rc[0]; 252 kdc_rc[unit].kdc_unit = unit; 253 kdc_rc[unit].kdc_isa = id; 254 kdc_rc[unit].kdc_state = DC_UNKNOWN; 255 dev_attach(&kdc_rc[unit]); 256} 257 258int rcattach(dvp) 259 struct isa_device *dvp; 260{ 261 register int i, chan, nec = dvp->id_iobase; 262 struct rc_softc *rcb = &rc_softc[dvp->id_unit]; 263 struct rc_chans *rc = &rc_chans[dvp->id_unit * CD180_NCHAN]; 264 static int rc_wakeup_started = 0; 265 struct tty *tp; 266 267 /* Thorooughly test the device */ 268 if (rcb->rcb_probed != RC_PROBED) 269 return 0; 270 rcb->rcb_addr = nec; 271 rcb->rcb_dtr = 0; 272 rcb->rcb_baserc = rc; 273 /*rcb->rcb_chipid = 0x10 + dvp->id_unit;*/ 274 printf("rc%d: %d chans, firmware rev. %c\n", dvp->id_unit, 275 CD180_NCHAN, (rcin(CD180_GFRCR) & 0xF) + 'A'); 276 277 rc_registerdev(dvp); 278 279 for (chan = 0; chan < CD180_NCHAN; chan++, rc++) { 280 rc->rc_rcb = rcb; 281 rc->rc_chan = chan; 282 rc->rc_iptr = rc->rc_ibuf; 283 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE]; 284 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER]; 285 rc->rc_flags = rc->rc_ier = rc->rc_msvr = 0; 286 rc->rc_cor2 = rc->rc_pendcmd = 0; 287 rc->rc_optr = rc->rc_obufend = rc->rc_obuf; 288 rc->rc_dtrwait = 3 * hz; 289 rc->rc_dcdwaits= 0; 290 rc->rc_hotchar = 0; 291 tp = rc->rc_tp = &rc_tty[chan]; 292 ttychars(tp); 293 tp->t_lflag = tp->t_iflag = tp->t_oflag = 0; 294 tp->t_cflag = TTYDEF_CFLAG; 295 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 296 } 297 rcb->rcb_probed = RC_ATTACHED; 298 if (!rc_wakeup_started) { 299 rc_wakeup((void *)NULL); 300 rc_wakeup_started = 0; 301 } 302 return 1; 303} 304 305/* RC interrupt handling */ 306void rcintr(unit) 307 int unit; 308{ 309 register struct rc_softc *rcb = &rc_softc[unit]; 310 register struct rc_chans *rc; 311 register int nec, resid; 312 register u_char val, iack, bsr, ucnt, *optr; 313 int good_data, t_state; 314 315 if (rcb->rcb_probed != RC_ATTACHED) { 316 printf("rc%d: bogus interrupt\n", unit); 317 return; 318 } 319 nec = rcb->rcb_addr; 320 321 bsr = ~(rcin(RC_BSR)); 322 323 if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) { 324 printf("rc%d: extra interrupt\n", unit); 325 rcout(CD180_EOIR, 0); 326 return; 327 } 328 329 while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) { 330#ifdef RCDEBUG_DETAILED 331 printf("rc%d: intr (%02x) %s%s%s%s\n", unit, bsr, 332 (bsr & RC_BSR_TOUT)?"TOUT ":"", 333 (bsr & RC_BSR_RXINT)?"RXINT ":"", 334 (bsr & RC_BSR_TXINT)?"TXINT ":"", 335 (bsr & RC_BSR_MOINT)?"MOINT":""); 336#endif 337 if (bsr & RC_BSR_TOUT) { 338 printf("rc%d: hardware failure, reset board\n", unit); 339 rcout(RC_CTOUT, 0); 340 rc_reinit(rcb); 341 return; 342 } 343 if (bsr & RC_BSR_RXINT) { 344 iack = rcin(RC_PILR_RX); 345 good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID)); 346 if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) { 347 printf("rc%d: fake rxint: %02x\n", unit, iack); 348 goto more_intrs; 349 } 350 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 351 t_state = rc->rc_tp->t_state; 352 /* Do RTS flow control stuff */ 353 if ( (rc->rc_flags & RC_RTSFLOW) 354 || !(t_state & TS_ISOPEN) 355 ) { 356 if ( ( !(t_state & TS_ISOPEN) 357 || (t_state & TS_TBLOCK) 358 ) 359 && (rc->rc_msvr & MSVR_RTS) 360 ) 361 rcout(CD180_MSVR, 362 rc->rc_msvr &= ~MSVR_RTS); 363 else if (!(rc->rc_msvr & MSVR_RTS)) 364 rcout(CD180_MSVR, 365 rc->rc_msvr |= MSVR_RTS); 366 } 367 ucnt = rcin(CD180_RDCR) & 0xF; 368 resid = 0; 369 370 if (t_state & TS_ISOPEN) { 371 /* check for input buffer overflow */ 372 if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) { 373 resid = ucnt; 374 ucnt = rc->rc_bufend - rc->rc_iptr; 375 resid -= ucnt; 376 if (!(rc->rc_flags & RC_WAS_BUFOVFL)) { 377 rc->rc_flags |= RC_WAS_BUFOVFL; 378 rc_scheduled_event++; 379 } 380 } 381 optr = rc->rc_iptr; 382 /* check foor good data */ 383 if (good_data) { 384 while (ucnt-- > 0) { 385 val = rcin(CD180_RDR); 386 optr[0] = val; 387 optr[INPUT_FLAGS_SHIFT] = 0; 388 optr++; 389 rc_scheduled_event++; 390 if (val != 0 && val == rc->rc_hotchar) 391 setsofttty(); 392 } 393 } else { 394 /* Store also status data */ 395 while (ucnt-- > 0) { 396 iack = rcin(CD180_RCSR); 397 if (iack & RCSR_Timeout) 398 break; 399 if ( (iack & RCSR_OE) 400 && !(rc->rc_flags & RC_WAS_SILOVFL)) { 401 rc->rc_flags |= RC_WAS_SILOVFL; 402 rc_scheduled_event++; 403 } 404 val = rcin(CD180_RDR); 405 /* 406 Don't store PE if IGNPAR and BREAK if IGNBRK, 407 this hack allows "raw" tty optimization 408 works even if IGN* is set. 409 */ 410 if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break)) 411 || (!(iack & (RCSR_PE|RCSR_FE)) 412 || !(rc->rc_tp->t_iflag & IGNPAR)) 413 && (!(iack & RCSR_Break) 414 || !(rc->rc_tp->t_iflag & IGNBRK))) { 415 if ( (iack & (RCSR_PE|RCSR_FE)) 416 && (t_state & TS_CAN_BYPASS_L_RINT) 417 && ((iack & RCSR_FE) 418 || (iack & RCSR_PE) 419 && (rc->rc_tp->t_iflag & INPCK))) 420 val = 0; 421 else if (val != 0 && val == rc->rc_hotchar) 422 setsofttty(); 423 optr[0] = val; 424 optr[INPUT_FLAGS_SHIFT] = iack; 425 optr++; 426 rc_scheduled_event++; 427 } 428 } 429 } 430 rc->rc_iptr = optr; 431 rc->rc_flags |= RC_DORXFER; 432 } else 433 resid = ucnt; 434 /* Clear FIFO if necessary */ 435 while (resid-- > 0) { 436 if (!good_data) 437 iack = rcin(CD180_RCSR); 438 else 439 iack = 0; 440 if (iack & RCSR_Timeout) 441 break; 442 (void) rcin(CD180_RDR); 443 } 444 goto more_intrs; 445 } 446 if (bsr & RC_BSR_MOINT) { 447 iack = rcin(RC_PILR_MODEM); 448 if (iack != (GIVR_IT_MSCI | RC_FAKEID)) { 449 printf("rc%d: fake moint: %02x\n", unit, iack); 450 goto more_intrs; 451 } 452 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 453 iack = rcin(CD180_MCR); 454 rc->rc_msvr = rcin(CD180_MSVR); 455 rcout(CD180_MCR, 0); 456#ifdef RCDEBUG 457 printrcflags(rc, "moint"); 458#endif 459 if (rc->rc_flags & RC_CTSFLOW) { 460 if (rc->rc_msvr & MSVR_CTS) 461 rc->rc_flags |= RC_SEND_RDY; 462 else 463 rc->rc_flags &= ~RC_SEND_RDY; 464 } else 465 rc->rc_flags |= RC_SEND_RDY; 466 if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) { 467 rc_scheduled_event += LOTS_OF_EVENTS; 468 rc->rc_flags |= RC_MODCHG; 469 setsofttty(); 470 } 471 goto more_intrs; 472 } 473 if (bsr & RC_BSR_TXINT) { 474 iack = rcin(RC_PILR_TX); 475 if (iack != (GIVR_IT_TDI | RC_FAKEID)) { 476 printf("rc%d: fake txint: %02x\n", unit, iack); 477 goto more_intrs; 478 } 479 rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); 480 if ( (rc->rc_flags & RC_OSUSP) 481 || !(rc->rc_flags & RC_SEND_RDY) 482 ) 483 goto more_intrs; 484 /* Handle breaks and other stuff */ 485 if (rc->rc_pendcmd) { 486 rcout(CD180_COR2, rc->rc_cor2 |= COR2_ETC); 487 rcout(CD180_TDR, CD180_C_ESC); 488 rcout(CD180_TDR, rc->rc_pendcmd); 489 rcout(CD180_COR2, rc->rc_cor2 &= ~COR2_ETC); 490 rc->rc_pendcmd = 0; 491 goto more_intrs; 492 } 493 optr = rc->rc_optr; 494 resid = rc->rc_obufend - optr; 495 if (resid > CD180_NFIFO) 496 resid = CD180_NFIFO; 497 while (resid-- > 0) 498 rcout(CD180_TDR, *optr++); 499 rc->rc_optr = optr; 500 501 /* output completed? */ 502 if (optr >= rc->rc_obufend) { 503 rcout(CD180_IER, rc->rc_ier &= ~IER_TxRdy); 504#ifdef RCDEBUG 505 printf("rc%d/%d: output completed\n", unit, rc->rc_chan); 506#endif 507 if (!(rc->rc_flags & RC_DOXXFER)) { 508 rc_scheduled_event += LOTS_OF_EVENTS; 509 rc->rc_flags |= RC_DOXXFER; 510 setsofttty(); 511 } 512 } 513 } 514 more_intrs: 515 rcout(CD180_EOIR, 0); /* end of interrupt */ 516 rcout(RC_CTOUT, 0); 517 bsr = ~(rcin(RC_BSR)); 518 } 519} 520 521/* Feed characters to output buffer */ 522static void rc_start(tp) 523register struct tty *tp; 524{ 525 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 526 register int nec = rc->rc_rcb->rcb_addr, s; 527 528 if (rc->rc_flags & RC_OSBUSY) 529 return; 530 s = spltty(); 531 rc->rc_flags |= RC_OSBUSY; 532 disable_intr(); 533 if (tp->t_state & TS_TTSTOP) 534 rc->rc_flags |= RC_OSUSP; 535 else 536 rc->rc_flags &= ~RC_OSUSP; 537 /* Do RTS flow control stuff */ 538 if ( (rc->rc_flags & RC_RTSFLOW) 539 && (tp->t_state & TS_TBLOCK) 540 && (rc->rc_msvr & MSVR_RTS) 541 ) { 542 rcout(CD180_CAR, rc->rc_chan); 543 rcout(CD180_MSVR, rc->rc_msvr &= ~MSVR_RTS); 544 } else if (!(rc->rc_msvr & MSVR_RTS)) { 545 rcout(CD180_CAR, rc->rc_chan); 546 rcout(CD180_MSVR, rc->rc_msvr |= MSVR_RTS); 547 } 548 enable_intr(); 549 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 550 goto out; 551#ifdef RCDEBUG 552 printrcflags(rc, "rcstart"); 553#endif 554 ttwwakeup(tp); 555#ifdef RCDEBUG 556 printf("rcstart: outq = %d obuf = %d\n", 557 tp->t_outq.c_cc, rc->rc_obufend - rc->rc_optr); 558#endif 559 if (tp->t_state & TS_BUSY) 560 goto out; /* output still in progress ... */ 561 562 if (tp->t_outq.c_cc > 0) { 563 u_int ocnt; 564 565 tp->t_state |= TS_BUSY; 566 ocnt = q_to_b(&tp->t_outq, rc->rc_obuf, sizeof rc->rc_obuf); 567 disable_intr(); 568 rc->rc_optr = rc->rc_obuf; 569 rc->rc_obufend = rc->rc_optr + ocnt; 570 enable_intr(); 571 if (!(rc->rc_ier & IER_TxRdy)) { 572#ifdef RCDEBUG 573 printf("rc%d/%d: rcstart enable txint\n", rc->rc_rcb->rcb_unit, rc->rc_chan); 574#endif 575 rcout(CD180_CAR, rc->rc_chan); 576 rcout(CD180_IER, rc->rc_ier |= IER_TxRdy); 577 } 578 } 579out: 580 rc->rc_flags &= ~RC_OSBUSY; 581 (void) splx(s); 582} 583 584/* Handle delayed events. */ 585void rcpoll() 586{ 587 register struct rc_chans *rc; 588 register struct rc_softc *rcb; 589 register u_char *tptr, *eptr; 590 register int s; 591 register struct tty *tp; 592 register int chan, icnt, c, nec, unit; 593 594 if (rc_scheduled_event == 0) 595 return; 596repeat: 597 for (unit = 0; unit < NRC; unit++) { 598 rcb = &rc_softc[unit]; 599 rc = rcb->rcb_baserc; 600 nec = rc->rc_rcb->rcb_addr; 601 for (chan = 0; chan < CD180_NCHAN; rc++, chan++) { 602 tp = rc->rc_tp; 603#ifdef RCDEBUG 604 if (rc->rc_flags & (RC_DORXFER|RC_DOXXFER|RC_MODCHG| 605 RC_WAS_BUFOVFL|RC_WAS_SILOVFL)) 606 printrcflags(rc, "rcevent"); 607#endif 608 if (rc->rc_flags & RC_WAS_BUFOVFL) { 609 disable_intr(); 610 rc->rc_flags &= ~RC_WAS_BUFOVFL; 611 rc_scheduled_event--; 612 enable_intr(); 613 printf("rc%d/%d: interrupt-level buffer overflow\n", 614 unit, chan); 615 } 616 if (rc->rc_flags & RC_WAS_SILOVFL) { 617 disable_intr(); 618 rc->rc_flags &= ~RC_WAS_SILOVFL; 619 rc_scheduled_event--; 620 enable_intr(); 621 printf("rc%d/%d: silo overflow\n", 622 unit, chan); 623 } 624 if (rc->rc_flags & RC_MODCHG) { 625 disable_intr(); 626 rc->rc_flags &= ~RC_MODCHG; 627 rc_scheduled_event -= LOTS_OF_EVENTS; 628 enable_intr(); 629 (*linesw[tp->t_line].l_modem)(tp, !!(rc->rc_msvr & MSVR_CD)); 630 } 631 if (rc->rc_flags & RC_DORXFER) { 632 disable_intr(); 633 rc->rc_flags &= ~RC_DORXFER; 634 eptr = rc->rc_iptr; 635 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) 636 tptr = &rc->rc_ibuf[RC_IBUFSIZE]; 637 else 638 tptr = rc->rc_ibuf; 639 icnt = eptr - tptr; 640 if (icnt > 0) { 641 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) { 642 rc->rc_iptr = rc->rc_ibuf; 643 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE]; 644 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER]; 645 } else { 646 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE]; 647 rc->rc_bufend = &rc->rc_ibuf[2 * RC_IBUFSIZE]; 648 rc->rc_hiwat = 649 &rc->rc_ibuf[RC_IBUFSIZE + RC_IHIGHWATER]; 650 } 651 if ( (rc->rc_flags & RC_RTSFLOW) 652 && (tp->t_state & TS_ISOPEN) 653 && !(tp->t_state & TS_TBLOCK) 654 && !(rc->rc_msvr & MSVR_RTS) 655 ) { 656 rcout(CD180_CAR, chan); 657 rcout(CD180_MSVR, 658 rc->rc_msvr |= MSVR_RTS); 659 } 660 rc_scheduled_event -= icnt; 661 } 662 enable_intr(); 663 664 if (icnt <= 0 || !(tp->t_state & TS_ISOPEN)) 665 goto done1; 666 667 if ( linesw[tp->t_line].l_rint == ttyinput 668 && ((rc->rc_flags & RC_RTSFLOW) || (tp->t_iflag & IXOFF)) 669 && !(tp->t_state & TS_TBLOCK) 670 && (tp->t_rawq.c_cc + icnt) > RB_I_HIGH_WATER) { 671 int queue_full = 0; 672 673 if ((tp->t_iflag & IXOFF) && 674 tp->t_cc[VSTOP] != _POSIX_VDISABLE && 675 (queue_full = putc(tp->t_cc[VSTOP], &tp->t_outq)) == 0 || 676 (rc->rc_flags & RC_RTSFLOW)) { 677 tp->t_state |= TS_TBLOCK; 678 ttstart(tp); 679 if (queue_full) /* try again */ 680 tp->t_state &= ~TS_TBLOCK; 681 } 682 } 683 if ( (tp->t_state & TS_CAN_BYPASS_L_RINT) 684 && !(tp->t_state & TS_LOCAL)) { 685 tk_nin += icnt; 686 tk_rawcc += icnt; 687 tp->t_rawcc += icnt; 688 if (b_to_q(tptr, icnt, &tp->t_rawq)) 689 printf("rc%d/%d: tty-level buffer overflow\n", 690 unit, chan); 691 ttwakeup(tp); 692 if ((tp->t_state & TS_TTSTOP) && ((tp->t_iflag & IXANY) 693 || (tp->t_cc[VSTART] == tp->t_cc[VSTOP]))) { 694 tp->t_state &= ~TS_TTSTOP; 695 tp->t_lflag &= ~FLUSHO; 696 ttstart(tp); 697 } 698 } else { 699 for (; tptr < eptr; tptr++) 700 (*linesw[tp->t_line].l_rint) 701 (tptr[0] | 702 rc_rcsrt[tptr[INPUT_FLAGS_SHIFT] & 0xF], tp); 703 } 704done1: 705 } 706 if (rc->rc_flags & RC_DOXXFER) { 707 disable_intr(); 708 rc_scheduled_event -= LOTS_OF_EVENTS; 709 rc->rc_flags &= ~RC_DOXXFER; 710 rc->rc_tp->t_state &= ~TS_BUSY; 711 enable_intr(); 712 (*linesw[tp->t_line].l_start)(tp); 713 } 714 } 715 if (rc_scheduled_event == 0) 716 break; 717 } 718 if (rc_scheduled_event >= LOTS_OF_EVENTS) 719 goto repeat; 720} 721 722void rcstop(tp, rw) 723 register struct tty *tp; 724 int rw; 725{ 726 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 727 u_char *tptr, *eptr; 728 729#ifdef RCDEBUG 730 printf("rc%d/%d: rcstop %s%s\n", rc->rc_rcb->rcb_unit, rc->rc_chan, 731 (rw & FWRITE)?"FWRITE ":"", (rw & FREAD)?"FREAD":""); 732#endif 733 if (rw & FWRITE) 734 rc_discard_output(rc); 735 disable_intr(); 736 if (rw & FREAD) { 737 rc->rc_flags &= ~RC_DORXFER; 738 eptr = rc->rc_iptr; 739 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) { 740 tptr = &rc->rc_ibuf[RC_IBUFSIZE]; 741 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE]; 742 } else { 743 tptr = rc->rc_ibuf; 744 rc->rc_iptr = rc->rc_ibuf; 745 } 746 rc_scheduled_event -= eptr - tptr; 747 } 748 if (tp->t_state & TS_TTSTOP) 749 rc->rc_flags |= RC_OSUSP; 750 else 751 rc->rc_flags &= ~RC_OSUSP; 752 enable_intr(); 753} 754 755int rcopen(dev, flag, mode, p) 756 dev_t dev; 757 int flag, mode; 758 struct proc *p; 759{ 760 register struct rc_chans *rc; 761 register struct tty *tp; 762 int unit, nec, s, error = 0; 763 764 unit = GET_UNIT(dev); 765 if (unit >= NRC * CD180_NCHAN) 766 return ENXIO; 767 if (rc_softc[unit / CD180_NCHAN].rcb_probed != RC_ATTACHED) 768 return ENXIO; 769 rc = &rc_chans[unit]; 770 tp = rc->rc_tp; 771 nec = rc->rc_rcb->rcb_addr; 772#ifdef RCDEBUG 773 printf("rc%d/%d: rcopen: dev %x\n", rc->rc_rcb->rcb_unit, unit, dev); 774#endif 775 s = spltty(); 776 777again: 778 while (rc->rc_flags & RC_DTR_OFF) { 779 error = tsleep(&(rc->rc_dtrwait), TTIPRI | PCATCH, "rcdtr", 0); 780 if (error != 0) 781 goto out; 782 } 783 if (tp->t_state & TS_ISOPEN) { 784 if (CALLOUT(dev)) { 785 if (!(rc->rc_flags & RC_ACTOUT)) { 786 error = EBUSY; 787 goto out; 788 } 789 } else { 790 if (rc->rc_flags & RC_ACTOUT) { 791 if (flag & O_NONBLOCK) { 792 error = EBUSY; 793 goto out; 794 } 795 if (error = tsleep(&rc->rc_rcb, 796 TTIPRI|PCATCH, "rcbi", 0)) 797 goto out; 798 goto again; 799 } 800 } 801 if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) { 802 error = EBUSY; 803 goto out; 804 } 805 } else { 806 tp->t_oproc = rc_start; 807 tp->t_param = rc_param; 808 tp->t_dev = dev; 809 810 if (CALLOUT(dev)) 811 tp->t_cflag |= CLOCAL; 812 else 813 tp->t_cflag &= ~CLOCAL; 814 815 error = rc_param(tp, &tp->t_termios); 816 if (error) 817 goto out; 818 (void) rc_modctl(rc, TIOCM_RTS|TIOCM_DTR, DMSET); 819 820 ttsetwater(tp); 821 822 if ((rc->rc_msvr & MSVR_CD) || CALLOUT(dev)) 823 (*linesw[tp->t_line].l_modem)(tp, 1); 824 } 825 if (!(tp->t_state & TS_CARR_ON) && !CALLOUT(dev) 826 && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { 827 rc->rc_dcdwaits++; 828 error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "rcdcd", 0); 829 rc->rc_dcdwaits--; 830 if (error != 0) 831 goto out; 832 goto again; 833 } 834 error = (*linesw[tp->t_line].l_open)(dev, tp); 835 if ((tp->t_state & TS_ISOPEN) && CALLOUT(dev)) 836 rc->rc_flags |= RC_ACTOUT; 837out: 838 (void) splx(s); 839 840 if(rc->rc_dcdwaits == 0 && !(tp->t_state & TS_ISOPEN)) 841 rc_hardclose(rc); 842 843 return error; 844} 845 846int rcclose(dev, flag, mode, p) 847 dev_t dev; 848 int flag, mode; 849 struct proc *p; 850{ 851 register struct rc_chans *rc; 852 register struct tty *tp; 853 int s, unit = GET_UNIT(dev); 854 855 if (unit >= NRC * CD180_NCHAN) 856 return ENXIO; 857 rc = &rc_chans[unit]; 858 tp = rc->rc_tp; 859#ifdef RCDEBUG 860 printf("rc%d/%d: rcclose dev %x\n", rc->rc_rcb->rcb_unit, unit, dev); 861#endif 862 s = spltty(); 863 (*linesw[tp->t_line].l_close)(tp, flag); 864 rcstop(tp, FREAD | FWRITE); 865 rc_hardclose(rc); 866 ttyclose(tp); 867 splx(s); 868 return 0; 869} 870 871static void rc_hardclose(rc) 872register struct rc_chans *rc; 873{ 874 register int s, nec = rc->rc_rcb->rcb_addr; 875 register struct tty *tp = rc->rc_tp; 876 877 s = spltty(); 878 rcout(CD180_CAR, rc->rc_chan); 879 880 /* Disable rx/tx intrs */ 881 rcout(CD180_IER, rc->rc_ier = 0); 882 if ( (tp->t_cflag & HUPCL) 883 || !(rc->rc_flags & RC_ACTOUT) 884 && !(rc->rc_msvr & MSVR_CD) 885 && !(tp->t_cflag & CLOCAL) 886 || !(tp->t_state & TS_ISOPEN) 887 ) { 888 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan); 889 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 890 (void) rc_modctl(rc, TIOCM_RTS, DMSET); 891 if (rc->rc_dtrwait) { 892 timeout(rc_dtrwakeup, rc, rc->rc_dtrwait); 893 rc->rc_flags |= RC_DTR_OFF; 894 } 895 } 896 rc->rc_flags &= ~RC_ACTOUT; 897 wakeup((caddr_t) &rc->rc_rcb); /* wake bi */ 898 wakeup(TSA_CARR_ON(tp)); 899 (void) splx(s); 900} 901 902/* Read from line */ 903int rcread(dev, uio, flag) 904 dev_t dev; 905 struct uio *uio; 906 int flag; 907{ 908 struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp; 909 910 return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); 911} 912 913/* Write to line */ 914int rcwrite(dev, uio, flag) 915 dev_t dev; 916 struct uio *uio; 917 int flag; 918{ 919 struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp; 920 921 return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); 922} 923 924/* Reset the bastard */ 925static void rc_hwreset(unit, nec, chipid) 926 register int unit, nec; 927 unsigned int chipid; 928{ 929 CCRCMD(unit, -1, CCR_HWRESET); /* Hardware reset */ 930 DELAY(20000); 931 WAITFORCCR(unit, -1); 932 933 rcout(RC_CTOUT, 0); /* Clear timeout */ 934 rcout(CD180_GIVR, chipid); 935 rcout(CD180_GICR, 0); 936 937 /* Set Prescaler Registers (1 msec) */ 938 rcout(CD180_PPRL, ((RC_OSCFREQ + 999) / 1000) & 0xFF); 939 rcout(CD180_PPRH, ((RC_OSCFREQ + 999) / 1000) >> 8); 940 941 /* Initialize Priority Interrupt Level Registers */ 942 rcout(CD180_PILR1, RC_PILR_MODEM); 943 rcout(CD180_PILR2, RC_PILR_TX); 944 rcout(CD180_PILR3, RC_PILR_RX); 945 946 /* Reset DTR */ 947 rcout(RC_DTREG, ~0); 948} 949 950/* Set channel parameters */ 951static int rc_param(tp, ts) 952 register struct tty *tp; 953 struct termios *ts; 954{ 955 register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)]; 956 register int nec = rc->rc_rcb->rcb_addr; 957 int idivs, odivs, s, val, cflag, iflag, lflag, inpflow; 958 959 odivs = ttspeedtab(ts->c_ospeed, rc_speedtab); 960 if (ts->c_ispeed == 0) 961 ts->c_ispeed = ts->c_ospeed; 962 idivs = ttspeedtab(ts->c_ispeed, rc_speedtab); 963 if (idivs < 0 || odivs < 0) 964 return (EINVAL); 965 966 s = spltty(); 967 968 /* Select channel */ 969 rcout(CD180_CAR, rc->rc_chan); 970 971 /* If speed == 0, hangup line */ 972 if (ts->c_ospeed == 0) { 973 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan); 974 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 975 (void) rc_modctl(rc, TIOCM_DTR, DMBIC); 976 } 977 978 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 979 cflag = ts->c_cflag; 980 iflag = ts->c_iflag; 981 lflag = ts->c_lflag; 982 983 if (idivs > 0) { 984 rcout(CD180_RBPRL, idivs & 0xFF); 985 rcout(CD180_RBPRH, idivs >> 8); 986 } 987 if (odivs > 0) { 988 rcout(CD180_TBPRL, odivs & 0xFF); 989 rcout(CD180_TBPRH, odivs >> 8); 990 } 991 992 /* set timeout value */ 993 if (ts->c_ispeed > 0) { 994 int itm = ts->c_ispeed > 2400 ? 5 : 10000 / ts->c_ispeed + 1; 995 996 if ( !(lflag & ICANON) 997 && ts->c_cc[VMIN] != 0 && ts->c_cc[VTIME] != 0 998 && ts->c_cc[VTIME] * 10 > itm) 999 itm = ts->c_cc[VTIME] * 10; 1000 1001 rcout(CD180_RTPR, itm <= 255 ? itm : 255); 1002 } 1003 1004 switch (cflag & CSIZE) { 1005 case CS5: val = COR1_5BITS; break; 1006 case CS6: val = COR1_6BITS; break; 1007 case CS7: val = COR1_7BITS; break; 1008 default: 1009 case CS8: val = COR1_8BITS; break; 1010 } 1011 if (cflag & PARENB) { 1012 val |= COR1_NORMPAR; 1013 if (cflag & PARODD) 1014 val |= COR1_ODDP; 1015 if (!(cflag & INPCK)) 1016 val |= COR1_Ignore; 1017 } else 1018 val |= COR1_Ignore; 1019 if (cflag & CSTOPB) 1020 val |= COR1_2SB; 1021 rcout(CD180_COR1, val); 1022 1023 /* Set FIFO threshold */ 1024 val = ts->c_ospeed <= 4800 ? 1 : CD180_NFIFO / 2; 1025 inpflow = 0; 1026 if ( (iflag & IXOFF) 1027 && ( ts->c_cc[VSTOP] != _POSIX_VDISABLE 1028 && ( ts->c_cc[VSTART] != _POSIX_VDISABLE 1029 || (iflag & IXANY) 1030 ) 1031 ) 1032 ) { 1033 inpflow = 1; 1034 val |= COR3_SCDE|COR3_FCT; 1035 } 1036 rcout(CD180_COR3, val); 1037 1038 /* Initialize on-chip automatic flow control */ 1039 val = 0; 1040 rc->rc_flags &= ~(RC_CTSFLOW|RC_SEND_RDY); 1041 if (cflag & CCTS_OFLOW) { 1042 rc->rc_flags |= RC_CTSFLOW; 1043 val |= COR2_CtsAE; 1044 } else 1045 rc->rc_flags |= RC_SEND_RDY; 1046 if (tp->t_state & TS_TTSTOP) 1047 rc->rc_flags |= RC_OSUSP; 1048 else 1049 rc->rc_flags &= ~RC_OSUSP; 1050 if (cflag & CRTS_IFLOW) 1051 rc->rc_flags |= RC_RTSFLOW; 1052 else 1053 rc->rc_flags &= ~RC_RTSFLOW; 1054 1055 if (inpflow) { 1056 if (ts->c_cc[VSTART] != _POSIX_VDISABLE) 1057 rcout(CD180_SCHR1, ts->c_cc[VSTART]); 1058 rcout(CD180_SCHR2, ts->c_cc[VSTOP]); 1059 val |= COR2_TxIBE; 1060 if (iflag & IXANY) 1061 val |= COR2_IXM; 1062 } 1063 1064 rcout(CD180_COR2, rc->rc_cor2 = val); 1065 1066 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, 1067 CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); 1068 1069 disc_optim(tp, ts, rc); 1070 1071 /* modem ctl */ 1072 val = cflag & CLOCAL ? 0 : MCOR1_CDzd; 1073 if (cflag & CCTS_OFLOW) 1074 val |= MCOR1_CTSzd; 1075 rcout(CD180_MCOR1, val); 1076 1077 val = cflag & CLOCAL ? 0 : MCOR2_CDod; 1078 if (cflag & CCTS_OFLOW) 1079 val |= MCOR2_CTSod; 1080 rcout(CD180_MCOR2, val); 1081 1082 /* enable i/o and interrupts */ 1083 CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, 1084 CCR_XMTREN | ((cflag & CREAD) ? CCR_RCVREN : CCR_RCVRDIS)); 1085 WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan); 1086 1087 rc->rc_ier = cflag & CLOCAL ? 0 : IER_CD; 1088 if (cflag & CCTS_OFLOW) 1089 rc->rc_ier |= IER_CTS; 1090 if (cflag & CREAD) 1091 rc->rc_ier |= IER_RxData; 1092 if (tp->t_state & TS_BUSY) 1093 rc->rc_ier |= IER_TxRdy; 1094 if (ts->c_ospeed != 0) 1095 rc_modctl(rc, TIOCM_DTR, DMBIS); 1096 if ((cflag & CCTS_OFLOW) && (rc->rc_msvr & MSVR_CTS)) 1097 rc->rc_flags |= RC_SEND_RDY; 1098 rcout(CD180_IER, rc->rc_ier); 1099 (void) splx(s); 1100 return 0; 1101} 1102 1103/* Re-initialize board after bogus interrupts */ 1104static void rc_reinit(rcb) 1105struct rc_softc *rcb; 1106{ 1107 register struct rc_chans *rc, *rce; 1108 register int i, nec; 1109 1110 nec = rcb->rcb_addr; 1111 rc_hwreset(rcb->rcb_unit, nec, RC_FAKEID); 1112 rc = &rc_chans[rcb->rcb_unit * CD180_NCHAN]; 1113 rce = rc + CD180_NCHAN; 1114 for (; rc < rce; rc++) 1115 (void) rc_param(rc->rc_tp, &rc->rc_tp->t_termios); 1116} 1117 1118int rcioctl(dev, cmd, data, flag, p) 1119dev_t dev; 1120int cmd, flag; 1121caddr_t data; 1122struct proc *p; 1123{ 1124 register struct rc_chans *rc = &rc_chans[GET_UNIT(dev)]; 1125 register int s, error; 1126 struct tty *tp = rc->rc_tp; 1127 1128 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 1129 if (error >= 0) 1130 return (error); 1131 error = ttioctl(tp, cmd, data, flag); 1132 if (error >= 0) 1133 return (error); 1134 s = spltty(); 1135 1136 switch (cmd) { 1137 case TIOCSBRK: 1138 rc->rc_pendcmd = CD180_C_SBRK; 1139 break; 1140 1141 case TIOCCBRK: 1142 rc->rc_pendcmd = CD180_C_EBRK; 1143 break; 1144 1145 case TIOCSDTR: 1146 (void) rc_modctl(rc, TIOCM_DTR, DMBIS); 1147 break; 1148 1149 case TIOCCDTR: 1150 (void) rc_modctl(rc, TIOCM_DTR, DMBIC); 1151 break; 1152 1153 case TIOCMGET: 1154 *(int *) data = rc_modctl(rc, 0, DMGET); 1155 break; 1156 1157 case TIOCMSET: 1158 (void) rc_modctl(rc, *(int *) data, DMSET); 1159 break; 1160 1161 case TIOCMBIC: 1162 (void) rc_modctl(rc, *(int *) data, DMBIC); 1163 break; 1164 1165 case TIOCMBIS: 1166 (void) rc_modctl(rc, *(int *) data, DMBIS); 1167 break; 1168 1169 case TIOCMSDTRWAIT: 1170 error = suser(p->p_ucred, &p->p_acflag); 1171 if (error != 0) { 1172 splx(s); 1173 return (error); 1174 } 1175 rc->rc_dtrwait = *(int *)data * hz / 100; 1176 break; 1177 1178 case TIOCMGDTRWAIT: 1179 *(int *)data = rc->rc_dtrwait * 100 / hz; 1180 break; 1181 1182 default: 1183 (void) splx(s); 1184 return ENOTTY; 1185 } 1186 (void) splx(s); 1187 return 0; 1188} 1189 1190 1191/* Modem control routines */ 1192 1193static int rc_modctl(rc, bits, cmd) 1194register struct rc_chans *rc; 1195int bits, cmd; 1196{ 1197 register int nec = rc->rc_rcb->rcb_addr; 1198 u_char *dtr = &rc->rc_rcb->rcb_dtr, msvr; 1199 1200 rcout(CD180_CAR, rc->rc_chan); 1201 1202 switch (cmd) { 1203 case DMSET: 1204 rcout(RC_DTREG, (bits & TIOCM_DTR) ? 1205 ~(*dtr |= 1 << rc->rc_chan) : 1206 ~(*dtr &= ~(1 << rc->rc_chan))); 1207 msvr = rcin(CD180_MSVR); 1208 if (bits & TIOCM_RTS) 1209 msvr |= MSVR_RTS; 1210 else 1211 msvr &= ~MSVR_RTS; 1212 if (bits & TIOCM_DTR) 1213 msvr |= MSVR_DTR; 1214 else 1215 msvr &= ~MSVR_DTR; 1216 rcout(CD180_MSVR, msvr); 1217 break; 1218 1219 case DMBIS: 1220 if (bits & TIOCM_DTR) 1221 rcout(RC_DTREG, ~(*dtr |= 1 << rc->rc_chan)); 1222 msvr = rcin(CD180_MSVR); 1223 if (bits & TIOCM_RTS) 1224 msvr |= MSVR_RTS; 1225 if (bits & TIOCM_DTR) 1226 msvr |= MSVR_DTR; 1227 rcout(CD180_MSVR, msvr); 1228 break; 1229 1230 case DMGET: 1231 bits = TIOCM_LE; 1232 msvr = rc->rc_msvr = rcin(CD180_MSVR); 1233 1234 if (msvr & MSVR_RTS) 1235 bits |= TIOCM_RTS; 1236 if (msvr & MSVR_CTS) 1237 bits |= TIOCM_CTS; 1238 if (msvr & MSVR_DSR) 1239 bits |= TIOCM_DSR; 1240 if (msvr & MSVR_DTR) 1241 bits |= TIOCM_DTR; 1242 if (msvr & MSVR_CD) 1243 bits |= TIOCM_CD; 1244 if (~rcin(RC_RIREG) & (1 << rc->rc_chan)) 1245 bits |= TIOCM_RI; 1246 return bits; 1247 1248 case DMBIC: 1249 if (bits & TIOCM_DTR) 1250 rcout(RC_DTREG, ~(*dtr &= ~(1 << rc->rc_chan))); 1251 msvr = rcin(CD180_MSVR); 1252 if (bits & TIOCM_RTS) 1253 msvr &= ~MSVR_RTS; 1254 if (bits & TIOCM_DTR) 1255 msvr &= ~MSVR_DTR; 1256 rcout(CD180_MSVR, msvr); 1257 break; 1258 } 1259 rc->rc_msvr = rcin(CD180_MSVR); 1260 return 0; 1261} 1262 1263/* Test the board. */ 1264int rc_test(nec, unit) 1265 register int nec; 1266 int unit; 1267{ 1268 int chan = 0, nopt = 0; 1269 int i = 0, rcnt, old_level; 1270 unsigned int iack, chipid; 1271 unsigned short divs; 1272 static u_char ctest[] = "\377\125\252\045\244\0\377"; 1273#define CTLEN 8 1274#define ERR(s) { \ 1275 printf("rc%d: ", unit); printf s ; printf("\n"); \ 1276 (void) splx(old_level); return 1; } 1277 1278 struct rtest { 1279 u_char txbuf[CD180_NFIFO]; /* TX buffer */ 1280 u_char rxbuf[CD180_NFIFO]; /* RX buffer */ 1281 int rxptr; /* RX pointer */ 1282 int txptr; /* TX pointer */ 1283 } tchans[CD180_NCHAN]; 1284 1285 old_level = spltty(); 1286 1287 chipid = RC_FAKEID; 1288 1289 /* First, reset board to inital state */ 1290 rc_hwreset(unit, nec, chipid); 1291 1292 divs = RC_BRD(19200); 1293 1294 /* Initialize channels */ 1295 for (chan = 0; chan < CD180_NCHAN; chan++) { 1296 1297 /* Select and reset channel */ 1298 rcout(CD180_CAR, chan); 1299 CCRCMD(unit, chan, CCR_ResetChan); 1300 WAITFORCCR(unit, chan); 1301 1302 /* Set speed */ 1303 rcout(CD180_RBPRL, divs & 0xFF); 1304 rcout(CD180_RBPRH, divs >> 8); 1305 rcout(CD180_TBPRL, divs & 0xFF); 1306 rcout(CD180_TBPRH, divs >> 8); 1307 1308 /* set timeout value */ 1309 rcout(CD180_RTPR, 0); 1310 1311 /* Establish local loopback */ 1312 rcout(CD180_COR1, COR1_NOPAR | COR1_8BITS | COR1_1SB); 1313 rcout(CD180_COR2, COR2_LLM); 1314 rcout(CD180_COR3, CD180_NFIFO); 1315 CCRCMD(unit, chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); 1316 CCRCMD(unit, chan, CCR_RCVREN | CCR_XMTREN); 1317 WAITFORCCR(unit, chan); 1318 rcout(CD180_MSVR, MSVR_RTS); 1319 1320 /* Fill TXBUF with test data */ 1321 for (i = 0; i < CD180_NFIFO; i++) { 1322 tchans[chan].txbuf[i] = ctest[i]; 1323 tchans[chan].rxbuf[i] = 0; 1324 } 1325 tchans[chan].txptr = tchans[chan].rxptr = 0; 1326 1327 /* Now, start transmit */ 1328 rcout(CD180_IER, IER_TxMpty|IER_RxData); 1329 } 1330 /* Pseudo-interrupt poll stuff */ 1331 for (rcnt = 10000; rcnt-- > 0; rcnt--) { 1332 i = ~(rcin(RC_BSR)); 1333 if (i & RC_BSR_TOUT) 1334 ERR(("BSR timeout bit set\n")) 1335 else if (i & RC_BSR_TXINT) { 1336 iack = rcin(RC_PILR_TX); 1337 if (iack != (GIVR_IT_TDI | chipid)) 1338 ERR(("Bad TX intr ack (%02x != %02x)\n", 1339 iack, GIVR_IT_TDI | chipid)); 1340 chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH; 1341 /* If no more data to transmit, disable TX intr */ 1342 if (tchans[chan].txptr >= CD180_NFIFO) { 1343 iack = rcin(CD180_IER); 1344 rcout(CD180_IER, iack & ~IER_TxMpty); 1345 } else { 1346 for (iack = tchans[chan].txptr; 1347 iack < CD180_NFIFO; iack++) 1348 rcout(CD180_TDR, 1349 tchans[chan].txbuf[iack]); 1350 tchans[chan].txptr = iack; 1351 } 1352 rcout(CD180_EOIR, 0); 1353 } else if (i & RC_BSR_RXINT) { 1354 u_char ucnt; 1355 1356 iack = rcin(RC_PILR_RX); 1357 if (iack != (GIVR_IT_RGDI | chipid) && 1358 iack != (GIVR_IT_REI | chipid)) 1359 ERR(("Bad RX intr ack (%02x != %02x)\n", 1360 iack, GIVR_IT_RGDI | chipid)) 1361 chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH; 1362 ucnt = rcin(CD180_RDCR) & 0xF; 1363 while (ucnt-- > 0) { 1364 iack = rcin(CD180_RCSR); 1365 if (iack & RCSR_Timeout) 1366 break; 1367 if (iack & 0xF) 1368 ERR(("Bad char chan %d (RCSR = %02X)\n", 1369 chan, iack)) 1370 if (tchans[chan].rxptr > CD180_NFIFO) 1371 ERR(("Got extra chars chan %d\n", 1372 chan)) 1373 tchans[chan].rxbuf[tchans[chan].rxptr++] = 1374 rcin(CD180_RDR); 1375 } 1376 rcout(CD180_EOIR, 0); 1377 } 1378 rcout(RC_CTOUT, 0); 1379 for (iack = chan = 0; chan < CD180_NCHAN; chan++) 1380 if (tchans[chan].rxptr >= CD180_NFIFO) 1381 iack++; 1382 if (iack == CD180_NCHAN) 1383 break; 1384 } 1385 for (chan = 0; chan < CD180_NCHAN; chan++) { 1386 /* Select and reset channel */ 1387 rcout(CD180_CAR, chan); 1388 CCRCMD(unit, chan, CCR_ResetChan); 1389 } 1390 1391 if (!rcnt) 1392 ERR(("looses characters during local loopback\n")) 1393 /* Now, check data */ 1394 for (chan = 0; chan < CD180_NCHAN; chan++) 1395 for (i = 0; i < CD180_NFIFO; i++) 1396 if (ctest[i] != tchans[chan].rxbuf[i]) 1397 ERR(("data mismatch chan %d ptr %d (%d != %d)\n", 1398 chan, i, ctest[i], tchans[chan].rxbuf[i])) 1399 (void) splx(old_level); 1400 return 0; 1401} 1402 1403#ifdef RCDEBUG 1404static void printrcflags(rc, comment) 1405struct rc_chans *rc; 1406char *comment; 1407{ 1408 u_short f = rc->rc_flags; 1409 register int nec = rc->rc_rcb->rcb_addr; 1410 1411 printf("rc%d/%d: %s flags: %s%s%s%s%s%s%s%s%s%s%s%s\n", 1412 rc->rc_rcb->rcb_unit, rc->rc_chan, comment, 1413 (f & RC_DTR_OFF)?"DTR_OFF " :"", 1414 (f & RC_ACTOUT) ?"ACTOUT " :"", 1415 (f & RC_RTSFLOW)?"RTSFLOW " :"", 1416 (f & RC_CTSFLOW)?"CTSFLOW " :"", 1417 (f & RC_DORXFER)?"DORXFER " :"", 1418 (f & RC_DOXXFER)?"DOXXFER " :"", 1419 (f & RC_MODCHG) ?"MODCHG " :"", 1420 (f & RC_OSUSP) ?"OSUSP " :"", 1421 (f & RC_OSBUSY) ?"OSBUSY " :"", 1422 (f & RC_WAS_BUFOVFL) ?"BUFOVFL " :"", 1423 (f & RC_WAS_SILOVFL) ?"SILOVFL " :"", 1424 (f & RC_SEND_RDY) ?"SEND_RDY":""); 1425 1426 rcout(CD180_CAR, rc->rc_chan); 1427 1428 printf("rc%d/%d: msvr %02x ier %02x ccsr %02x\n", 1429 rc->rc_rcb->rcb_unit, rc->rc_chan, 1430 rcin(CD180_MSVR), 1431 rcin(CD180_IER), 1432 rcin(CD180_CCSR)); 1433} 1434#endif /* RCDEBUG */ 1435 1436struct tty * 1437rcdevtotty(dev) 1438 dev_t dev; 1439{ 1440 int unit; 1441 1442 unit = GET_UNIT(dev); 1443 if (unit >= NRC * CD180_NCHAN) 1444 return NULL; 1445 return (&rc_tty[unit]); 1446} 1447 1448static void 1449rc_dtrwakeup(chan) 1450 void *chan; 1451{ 1452 struct rc_chans *rc; 1453 1454 rc = (struct rc_chans *)chan; 1455 rc->rc_flags &= ~RC_DTR_OFF; 1456 wakeup(&rc->rc_dtrwait); 1457} 1458 1459static void 1460rc_discard_output(rc) 1461 struct rc_chans *rc; 1462{ 1463 disable_intr(); 1464 if (rc->rc_flags & RC_DOXXFER) { 1465 rc_scheduled_event -= LOTS_OF_EVENTS; 1466 rc->rc_flags &= ~RC_DOXXFER; 1467 } 1468 rc->rc_optr = rc->rc_obufend; 1469 rc->rc_tp->t_state &= ~TS_BUSY; 1470 enable_intr(); 1471} 1472 1473static void 1474rc_wakeup(chan) 1475 void *chan; 1476{ 1477 int unit; 1478 1479 timeout(rc_wakeup, (caddr_t)NULL, 1); 1480 1481 if (rc_scheduled_event != 0) { 1482 int s; 1483 1484 s = splsofttty(); 1485 rcpoll(); 1486 splx(s); 1487 } 1488} 1489 1490static void 1491disc_optim(tp, t, rc) 1492 struct tty *tp; 1493 struct termios *t; 1494 struct rc_chans *rc; 1495{ 1496 1497 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP 1498 | IXOFF | IXON)) 1499 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) 1500 && (!(t->c_iflag & PARMRK) || 1501 (t->c_iflag & (IGNPAR|IGNBRK)) == (IGNPAR|IGNBRK)) 1502 && !(t->c_lflag & (ECHO | ECHONL | ICANON | IEXTEN | ISIG 1503 | PENDIN)) 1504 && linesw[tp->t_line].l_rint == ttyinput) 1505 tp->t_state |= TS_CAN_BYPASS_L_RINT; 1506 else 1507 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 1508 if (tp->t_line == SLIPDISC) 1509 rc->rc_hotchar = 0xc0; 1510 else if (tp->t_line == PPPDISC) 1511 rc->rc_hotchar = 0x7e; 1512 else 1513 rc->rc_hotchar = 0; 1514} 1515 1516static void 1517rc_wait0(nec, unit, chan, line) 1518 int nec, unit, chan, line; 1519{ 1520 int rcnt; 1521 1522 for (rcnt = 100; rcnt && rcin(CD180_CCR); rcnt--) 1523 DELAY(15); 1524 if (rcnt == 0) 1525 printf("rc%d/%d: channel command timeout, rc.c line: %d\n", 1526 unit, chan, line); 1527} 1528#endif /* NRC */ 1529