1 /* $NetBSD: mfc.c,v 1.54 2011/04/24 16:26:52 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 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 /* 32 * Copyright (c) 1994 Michael L. Hitch 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 */ 54 55 #include "opt_kgdb.h" 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: mfc.c,v 1.54 2011/04/24 16:26:52 rmind Exp $"); 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/device.h> 64 #include <sys/tty.h> 65 #include <sys/proc.h> 66 #include <sys/file.h> 67 #include <sys/uio.h> 68 #include <sys/syslog.h> 69 #include <sys/queue.h> 70 #include <sys/conf.h> 71 #include <sys/kauth.h> 72 #include <machine/cpu.h> 73 #include <amiga/amiga/device.h> 74 #include <amiga/amiga/isr.h> 75 #include <amiga/amiga/custom.h> 76 #include <amiga/amiga/cia.h> 77 #include <amiga/amiga/cc.h> 78 #include <amiga/dev/zbusvar.h> 79 80 #include <dev/cons.h> 81 82 #include "mfcs.h" 83 84 #ifndef SEROBUF_SIZE 85 #define SEROBUF_SIZE 128 86 #endif 87 #ifndef SERIBUF_SIZE 88 #define SERIBUF_SIZE 1024 89 #endif 90 91 #define splser() spl6() 92 93 /* 94 * 68581 DUART registers 95 */ 96 struct mfc_regs { 97 volatile u_char du_mr1a; 98 #define du_mr2a du_mr1a 99 u_char pad0; 100 volatile u_char du_csra; 101 #define du_sra du_csra 102 u_char pad2; 103 volatile u_char du_cra; 104 u_char pad4; 105 volatile u_char du_tba; 106 #define du_rba du_tba 107 u_char pad6; 108 volatile u_char du_acr; 109 #define du_ipcr du_acr 110 u_char pad8; 111 volatile u_char du_imr; 112 #define du_isr du_imr 113 u_char pad10; 114 volatile u_char du_ctur; 115 #define du_cmsb du_ctur 116 u_char pad12; 117 volatile u_char du_ctlr; 118 #define du_clsb du_ctlr 119 u_char pad14; 120 volatile u_char du_mr1b; 121 #define du_mr2b du_mr1b 122 u_char pad16; 123 volatile u_char du_csrb; 124 #define du_srb du_csrb 125 u_char pad18; 126 volatile u_char du_crb; 127 u_char pad20; 128 volatile u_char du_tbb; 129 #define du_rbb du_tbb 130 u_char pad22; 131 volatile u_char du_ivr; 132 u_char pad24; 133 volatile u_char du_opcr; 134 #define du_ip du_opcr 135 u_char pad26; 136 volatile u_char du_btst; 137 #define du_strc du_btst 138 u_char pad28; 139 volatile u_char du_btrst; 140 #define du_stpc du_btrst 141 u_char pad30; 142 }; 143 144 /* 145 * 68681 DUART serial port registers 146 */ 147 struct duart_regs { 148 volatile u_char ch_mr1; 149 #define ch_mr2 ch_mr1 150 u_char pad0; 151 volatile u_char ch_csr; 152 #define ch_sr ch_csr 153 u_char pad1; 154 volatile u_char ch_cr; 155 u_char pad2; 156 volatile u_char ch_tb; 157 #define ch_rb ch_tb 158 u_char pad3; 159 }; 160 161 struct mfc_softc { 162 struct device sc_dev; 163 struct isr sc_isr; 164 struct mfc_regs *sc_regs; 165 u_long clk_frq; 166 u_short ct_val; 167 u_char ct_usecnt; 168 u_char imask; 169 u_char mfc_iii; 170 u_char last_ip; 171 }; 172 173 #if NMFCS > 0 174 struct mfcs_softc { 175 struct device sc_dev; 176 struct tty *sc_tty; 177 struct duart_regs *sc_duart; 178 struct mfc_regs *sc_regs; 179 struct mfc_softc *sc_mfc; 180 int swflags; 181 long flags; /* XXX */ 182 #define CT_USED 1 /* CT in use */ 183 u_short *rptr, *wptr, incnt, ovfl; 184 u_short inbuf[SERIBUF_SIZE]; 185 char *ptr, *end; 186 char outbuf[SEROBUF_SIZE]; 187 struct vbl_node vbl_node; 188 void *mfcs_si; 189 }; 190 #endif 191 192 #if NMFCP > 0 193 struct mfcp_softc { 194 }; 195 #endif 196 197 struct mfc_args { 198 struct zbus_args zargs; 199 const char *subdev; 200 char unit; 201 }; 202 203 int mfcprint(void *auxp, const char *); 204 void mfcattach(struct device *, struct device *, void *); 205 int mfcmatch(struct device *, struct cfdata *, void *); 206 207 #if NMFCS > 0 208 int mfcsmatch(struct device *, struct cfdata *, void *); 209 void mfcsattach(struct device *, struct device *, void *); 210 int mfcsparam( struct tty *, struct termios *); 211 int mfcshwiflow(struct tty *, int); 212 void mfcsstart(struct tty *); 213 int mfcsmctl(dev_t, int, int); 214 void mfcsxintr(int); 215 void mfcseint(int, int); 216 void mfcsmint(register int); 217 void mfcs_intr_soft(void *); 218 #endif 219 220 #if NMFCP > 0 221 void mfcpattach(struct device *, struct device *, void *); 222 int mfcpmatch(struct device *, struct cfdata *, void *); 223 #endif 224 int mfcintr(void *); 225 226 CFATTACH_DECL(mfc, sizeof(struct mfc_softc), 227 mfcmatch, mfcattach, NULL, NULL); 228 229 #if NMFCS > 0 230 CFATTACH_DECL(mfcs, sizeof(struct mfcs_softc), 231 mfcsmatch, mfcsattach, NULL, NULL); 232 233 extern struct cfdriver mfcs_cd; 234 #endif 235 236 #if NMFCP > 0 237 CFATTACH_DECL(mfcp, sizeof(struct mfcp_softc), 238 mfcpmatch, mfcpattach, NULL, NULL); 239 #endif 240 241 dev_type_open(mfcsopen); 242 dev_type_close(mfcsclose); 243 dev_type_read(mfcsread); 244 dev_type_write(mfcswrite); 245 dev_type_ioctl(mfcsioctl); 246 dev_type_stop(mfcsstop); 247 dev_type_tty(mfcstty); 248 dev_type_poll(mfcspoll); 249 250 const struct cdevsw mfcs_cdevsw = { 251 mfcsopen, mfcsclose, mfcsread, mfcswrite, mfcsioctl, 252 mfcsstop, mfcstty, mfcspoll, nommap, ttykqfilter, D_TTY 253 }; 254 255 int mfcs_active; 256 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 257 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 258 259 #ifdef notyet 260 /* 261 * MultiFaceCard III, II+ (not supported yet), and 262 * SerialMaster 500+ (not supported yet) 263 * baud rate tables for BRG set 1 [not used yet] 264 */ 265 266 const struct speedtab mfcs3speedtab1[] = { 267 { 0, 0 }, 268 { 100, 0x00 }, 269 { 220, 0x11 }, 270 { 600, 0x44 }, 271 { 1200, 0x55 }, 272 { 2400, 0x66 }, 273 { 4800, 0x88 }, 274 { 9600, 0x99 }, 275 { 19200, 0xbb }, 276 { 115200, 0xcc }, 277 { -1, -1 } 278 }; 279 280 /* 281 * MultiFaceCard II, I, and SerialMaster 500 282 * baud rate tables for BRG set 1 [not used yet] 283 */ 284 285 const struct speedtab mfcs2speedtab1[] = { 286 { 0, 0 }, 287 { 50, 0x00 }, 288 { 110, 0x11 }, 289 { 300, 0x44 }, 290 { 600, 0x55 }, 291 { 1200, 0x66 }, 292 { 2400, 0x88 }, 293 { 4800, 0x99 }, 294 { 9600, 0xbb }, 295 { 38400, 0xcc }, 296 { -1, -1 } 297 }; 298 #endif 299 300 /* 301 * MultiFaceCard III, II+ (not supported yet), and 302 * SerialMaster 500+ (not supported yet) 303 * baud rate tables for BRG set 2 304 */ 305 306 const struct speedtab mfcs3speedtab2[] = { 307 { 0, 0 }, 308 { 150, 0x00 }, 309 { 200, 0x11 }, 310 { 300, 0x33 }, 311 { 600, 0x44 }, 312 { 1200, 0x55 }, 313 { 2400, 0x66 }, 314 { 4800, 0x88 }, 315 { 9600, 0x99 }, 316 { 19200, 0xbb }, 317 { 38400, 0xcc }, 318 { -1, -1 } 319 }; 320 321 /* 322 * MultiFaceCard II, I, and SerialMaster 500 323 * baud rate tables for BRG set 2 324 */ 325 326 const struct speedtab mfcs2speedtab2[] = { 327 { 0, 0 }, 328 { 75, 0x00 }, 329 { 100, 0x11 }, 330 { 150, 0x33 }, 331 { 300, 0x44 }, 332 { 600, 0x55 }, 333 { 1200, 0x66 }, 334 { 2400, 0x88 }, 335 { 4800, 0x99 }, 336 { 9600, 0xbb }, 337 { 19200, 0xcc }, 338 { -1, -1 } 339 }; 340 341 /* 342 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 343 */ 344 int 345 mfcmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 346 { 347 struct zbus_args *zap; 348 349 zap = auxp; 350 if (zap->manid == 2092 && 351 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 352 353 return(1); 354 return(0); 355 } 356 357 void 358 mfcattach(struct device *pdp, struct device *dp, void *auxp) 359 { 360 struct mfc_softc *scc; 361 struct zbus_args *zap; 362 struct mfc_args ma; 363 int unit; 364 struct mfc_regs *rp; 365 366 zap = auxp; 367 368 printf ("\n"); 369 370 scc = (struct mfc_softc *)dp; 371 unit = device_unit(&scc->sc_dev); 372 scc->sc_regs = rp = zap->va; 373 if (zap->prodid == 18) 374 scc->mfc_iii = 3; 375 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 376 377 rp->du_opcr = 0x00; /* configure output port? */ 378 rp->du_btrst = 0x0f; /* clear modem lines */ 379 rp->du_ivr = 0; /* IVR */ 380 rp->du_imr = 0; /* IMR */ 381 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 382 rp->du_ctur = 0; 383 rp->du_ctlr = 4; 384 rp->du_csra = 0xcc; /* clock select = 38400 */ 385 rp->du_cra = 0x10; /* reset mode register ptr */ 386 rp->du_cra = 0x20; 387 rp->du_cra = 0x30; 388 rp->du_cra = 0x40; 389 rp->du_mr1a = 0x93; /* MRA1 */ 390 rp->du_mr2a = 0x17; /* MRA2 */ 391 rp->du_csrb = 0xcc; /* clock select = 38400 */ 392 rp->du_crb = 0x10; /* reset mode register ptr */ 393 rp->du_crb = 0x20; 394 rp->du_crb = 0x30; 395 rp->du_crb = 0x40; 396 rp->du_mr1b = 0x93; /* MRB1 */ 397 rp->du_mr2b = 0x17; /* MRB2 */ 398 rp->du_cra = 0x05; /* enable A Rx & Tx */ 399 rp->du_crb = 0x05; /* enable B Rx & Tx */ 400 401 scc->sc_isr.isr_intr = mfcintr; 402 scc->sc_isr.isr_arg = scc; 403 scc->sc_isr.isr_ipl = 6; 404 add_isr(&scc->sc_isr); 405 406 /* configure ports */ 407 memcpy(&ma.zargs, zap, sizeof(struct zbus_args)); 408 ma.subdev = "mfcs"; 409 ma.unit = unit * 2; 410 config_found(dp, &ma, mfcprint); 411 ma.unit = unit * 2 + 1; 412 config_found(dp, &ma, mfcprint); 413 ma.subdev = "mfcp"; 414 ma.unit = unit; 415 config_found(dp, &ma, mfcprint); 416 } 417 418 /* 419 * 420 */ 421 int 422 mfcsmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 423 { 424 struct mfc_args *ma; 425 426 ma = auxp; 427 if (strcmp(ma->subdev, "mfcs") == 0) 428 return (1); 429 return (0); 430 } 431 432 void 433 mfcsattach(struct device *pdp, struct device *dp, void *auxp) 434 { 435 int unit; 436 struct mfcs_softc *sc; 437 struct mfc_softc *scc; 438 struct mfc_args *ma; 439 struct mfc_regs *rp; 440 441 sc = device_private(dp); 442 scc = device_private(pdp); 443 ma = auxp; 444 445 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 446 SEROBUF_SIZE); 447 448 unit = ma->unit; 449 mfcs_active |= 1 << unit; 450 sc->rptr = sc->wptr = sc->inbuf; 451 sc->sc_mfc = scc; 452 sc->sc_regs = rp = scc->sc_regs; 453 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? 454 __UNVOLATILE(&rp->du_mr1b) : __UNVOLATILE(&rp->du_mr1a)); 455 sc->mfcs_si = softint_establish(SOFTINT_SERIAL, mfcs_intr_soft, sc); 456 /* 457 * should have only one vbl routine to handle all ports? 458 */ 459 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 460 sc->vbl_node.data = (void *) unit; 461 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 462 } 463 464 /* 465 * print diag if pnp is NULL else just extra 466 */ 467 int 468 mfcprint(void *auxp, const char *pnp) 469 { 470 if (pnp == NULL) 471 return(UNCONF); 472 return(QUIET); 473 } 474 475 int 476 mfcsopen(dev_t dev, int flag, int mode, struct lwp *l) 477 { 478 struct tty *tp; 479 struct mfcs_softc *sc; 480 int unit, error; 481 482 error = 0; 483 unit = dev & 0x1f; 484 485 sc = device_lookup_private(&mfcs_cd, unit); 486 if (sc == NULL || (mfcs_active & (1 << unit)) == 0) 487 return (ENXIO); 488 489 if (sc->sc_tty) 490 tp = sc->sc_tty; 491 else { 492 tp = sc->sc_tty = tty_alloc(); 493 tty_attach(tp); 494 } 495 496 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 497 tp->t_param = mfcsparam; 498 tp->t_dev = dev; 499 tp->t_hwiflow = mfcshwiflow; 500 501 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 502 return (EBUSY); 503 504 mutex_spin_enter(&tty_lock); 505 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 506 ttychars(tp); 507 if (tp->t_ispeed == 0) { 508 /* 509 * only when cleared do we reset to defaults. 510 */ 511 tp->t_iflag = TTYDEF_IFLAG; 512 tp->t_oflag = TTYDEF_OFLAG; 513 tp->t_cflag = TTYDEF_CFLAG; 514 tp->t_lflag = TTYDEF_LFLAG; 515 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 516 } 517 /* 518 * do these all the time 519 */ 520 if (sc->swflags & TIOCFLAG_CLOCAL) 521 tp->t_cflag |= CLOCAL; 522 if (sc->swflags & TIOCFLAG_CRTSCTS) 523 tp->t_cflag |= CRTSCTS; 524 if (sc->swflags & TIOCFLAG_MDMBUF) 525 tp->t_cflag |= MDMBUF; 526 mfcsparam(tp, &tp->t_termios); 527 ttsetwater(tp); 528 529 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 530 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 531 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 532 tp->t_state |= TS_CARR_ON; 533 else 534 tp->t_state &= ~TS_CARR_ON; 535 } 536 537 /* 538 * if NONBLOCK requested, ignore carrier 539 */ 540 if (flag & O_NONBLOCK) 541 goto done; 542 543 /* 544 * block waiting for carrier 545 */ 546 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 547 tp->t_wopen++; 548 error = ttysleep(tp, &tp->t_rawcv, true, 0); 549 tp->t_wopen--; 550 if (error) { 551 mutex_spin_exit(&tty_lock); 552 return(error); 553 } 554 } 555 done: 556 /* This is a way to handle lost XON characters */ 557 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 558 tp->t_state &= ~TS_TTSTOP; 559 ttstart (tp); 560 } 561 /* 562 * Reset the tty pointer, as there could have been a dialout 563 * use of the tty with a dialin open waiting. 564 */ 565 tp->t_dev = dev; 566 mutex_spin_exit(&tty_lock); 567 return tp->t_linesw->l_open(dev, tp); 568 } 569 570 /*ARGSUSED*/ 571 int 572 mfcsclose(dev_t dev, int flag, int mode, struct lwp *l) 573 { 574 struct tty *tp; 575 int unit; 576 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 577 struct mfc_softc *scc= sc->sc_mfc; 578 579 unit = dev & 31; 580 581 tp = sc->sc_tty; 582 tp->t_linesw->l_close(tp, flag); 583 sc->sc_duart->ch_cr = 0x70; /* stop break */ 584 585 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 586 scc->sc_regs->du_imr = scc->imask; 587 if (sc->flags & CT_USED) { 588 --scc->ct_usecnt; 589 sc->flags &= ~CT_USED; 590 } 591 592 /* 593 * If the device is closed, it's close, no matter whether we deal with 594 * modem control signals nor not. 595 */ 596 #if 0 597 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 598 (tp->t_state & TS_ISOPEN) == 0) 599 #endif 600 (void) mfcsmctl(dev, 0, DMSET); 601 ttyclose(tp); 602 #if not_yet 603 if (tp != &mfcs_cons) { 604 remove_vbl_function(&sc->vbl_node); 605 tty_free(tp); 606 sc->sc_tty = (struct tty *) NULL; 607 } 608 #endif 609 return (0); 610 } 611 612 int 613 mfcsread(dev_t dev, struct uio *uio, int flag) 614 { 615 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 616 struct tty *tp = sc->sc_tty; 617 if (tp == NULL) 618 return(ENXIO); 619 return tp->t_linesw->l_read(tp, uio, flag); 620 } 621 622 int 623 mfcswrite(dev_t dev, struct uio *uio, int flag) 624 { 625 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 626 struct tty *tp = sc->sc_tty; 627 628 if (tp == NULL) 629 return(ENXIO); 630 return tp->t_linesw->l_write(tp, uio, flag); 631 } 632 633 int 634 mfcspoll(dev_t dev, int events, struct lwp *l) 635 { 636 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 637 struct tty *tp = sc->sc_tty; 638 639 if (tp == NULL) 640 return(ENXIO); 641 return ((*tp->t_linesw->l_poll)(tp, events, l)); 642 } 643 644 struct tty * 645 mfcstty(dev_t dev) 646 { 647 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 648 649 return (sc->sc_tty); 650 } 651 652 int 653 mfcsioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 654 { 655 register struct tty *tp; 656 register int error; 657 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 658 659 tp = sc->sc_tty; 660 if (!tp) 661 return ENXIO; 662 663 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 664 if (error != EPASSTHROUGH) 665 return(error); 666 667 error = ttioctl(tp, cmd, data, flag, l); 668 if (error != EPASSTHROUGH) 669 return(error); 670 671 switch (cmd) { 672 case TIOCSBRK: 673 sc->sc_duart->ch_cr = 0x60; /* start break */ 674 break; 675 676 case TIOCCBRK: 677 sc->sc_duart->ch_cr = 0x70; /* stop break */ 678 break; 679 680 case TIOCSDTR: 681 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 682 break; 683 684 case TIOCCDTR: 685 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 686 break; 687 688 case TIOCMSET: 689 (void) mfcsmctl(dev, *(int *) data, DMSET); 690 break; 691 692 case TIOCMBIS: 693 (void) mfcsmctl(dev, *(int *) data, DMBIS); 694 break; 695 696 case TIOCMBIC: 697 (void) mfcsmctl(dev, *(int *) data, DMBIC); 698 break; 699 700 case TIOCMGET: 701 *(int *)data = mfcsmctl(dev, 0, DMGET); 702 break; 703 case TIOCGFLAGS: 704 *(int *)data = SWFLAGS(dev); 705 break; 706 case TIOCSFLAGS: 707 error = kauth_authorize_device_tty(l->l_cred, 708 KAUTH_DEVICE_TTY_PRIVSET, tp); 709 if (error != 0) 710 return(EPERM); 711 712 sc->swflags = *(int *)data; 713 sc->swflags &= /* only allow valid flags */ 714 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 715 /* XXXX need to change duart parameters? */ 716 break; 717 default: 718 return(EPASSTHROUGH); 719 } 720 721 return(0); 722 } 723 724 int 725 mfcsparam(struct tty *tp, struct termios *t) 726 { 727 int cflag, unit, ospeed; 728 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 729 struct mfc_softc *scc= sc->sc_mfc; 730 731 cflag = t->c_cflag; 732 unit = tp->t_dev & 31; 733 if (sc->flags & CT_USED) { 734 --scc->ct_usecnt; 735 sc->flags &= ~CT_USED; 736 } 737 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 738 mfcs2speedtab2); 739 740 /* 741 * If Baud Rate Generator can't generate requested speed, 742 * try to use the counter/timer. 743 */ 744 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 745 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 746 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 747 ospeed = -1; 748 else { 749 scc->sc_regs->du_ctur = ospeed >> 8; 750 scc->sc_regs->du_ctlr = ospeed; 751 scc->ct_val = ospeed; 752 ++scc->ct_usecnt; 753 sc->flags |= CT_USED; 754 ospeed = 0xdd; 755 } 756 } 757 /* XXXX 68681 duart could handle split speeds */ 758 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 759 return(EINVAL); 760 761 /* XXXX handle parity, character size, stop bits, flow control */ 762 763 /* 764 * copy to tty 765 */ 766 tp->t_ispeed = t->c_ispeed; 767 tp->t_ospeed = t->c_ospeed; 768 tp->t_cflag = cflag; 769 770 /* 771 * enable interrupts 772 */ 773 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 774 scc->sc_regs->du_imr = scc->imask; 775 #if defined(DEBUG) && 0 776 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 777 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 778 #endif 779 if (ospeed == 0) 780 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 781 else { 782 /* 783 * (re)enable DTR 784 * and set baud rate. (8 bit mode) 785 */ 786 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 787 sc->sc_duart->ch_csr = ospeed; 788 } 789 return(0); 790 } 791 792 int 793 mfcshwiflow(struct tty *tp, int flag) 794 { 795 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 796 int unit = tp->t_dev & 1; 797 798 if (flag) 799 sc->sc_regs->du_btrst = 1 << unit; 800 else 801 sc->sc_regs->du_btst = 1 << unit; 802 return 1; 803 } 804 805 void 806 mfcsstart(struct tty *tp) 807 { 808 int cc, s, unit; 809 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 810 struct mfc_softc *scc= sc->sc_mfc; 811 812 if ((tp->t_state & TS_ISOPEN) == 0) 813 return; 814 815 unit = tp->t_dev & 1; 816 817 s = splser(); 818 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 819 goto out; 820 821 cc = tp->t_outq.c_cc; 822 if (!ttypull(tp) || (tp->t_state & TS_BUSY)) 823 goto out; 824 825 /* 826 * We only do bulk transfers if using CTSRTS flow control, not for 827 * (probably sloooow) ixon/ixoff devices. 828 */ 829 if ((tp->t_cflag & CRTSCTS) == 0) 830 cc = 1; 831 832 /* 833 * Limit the amount of output we do in one burst 834 * to prevent hogging the CPU. 835 */ 836 if (cc > SEROBUF_SIZE) 837 cc = SEROBUF_SIZE; 838 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 839 if (cc > 0) { 840 tp->t_state |= TS_BUSY; 841 842 sc->ptr = sc->outbuf; 843 sc->end = sc->outbuf + cc; 844 845 /* 846 * Get first character out, then have TBE-interrupts blow out 847 * further characters, until buffer is empty, and TS_BUSY gets 848 * cleared. 849 */ 850 sc->sc_duart->ch_tb = *sc->ptr++; 851 scc->imask |= 1 << (unit * 4); 852 sc->sc_regs->du_imr = scc->imask; 853 } 854 out: 855 splx(s); 856 } 857 858 /* 859 * Stop output on a line. 860 */ 861 /*ARGSUSED*/ 862 void 863 mfcsstop(struct tty *tp, int flag) 864 { 865 int s; 866 867 s = splser(); 868 if (tp->t_state & TS_BUSY) { 869 if ((tp->t_state & TS_TTSTOP) == 0) 870 tp->t_state |= TS_FLUSH; 871 } 872 splx(s); 873 } 874 875 int 876 mfcsmctl(dev_t dev, int bits, int how) 877 { 878 int unit, s; 879 u_char ub = 0; 880 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 881 882 unit = dev & 1; 883 884 /* 885 * convert TIOCM* mask into CIA mask 886 * which is active low 887 */ 888 if (how != DMGET) { 889 /* 890 * need to save current state of DTR & RTS ? 891 */ 892 if (bits & TIOCM_DTR) 893 ub |= 0x04 << unit; 894 if (bits & TIOCM_RTS) 895 ub |= 0x01 << unit; 896 } 897 s = splser(); 898 switch (how) { 899 case DMSET: 900 sc->sc_regs->du_btst = ub; 901 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 902 break; 903 904 case DMBIC: 905 sc->sc_regs->du_btrst = ub; 906 ub = ~sc->sc_regs->du_ip; 907 break; 908 909 case DMBIS: 910 sc->sc_regs->du_btst = ub; 911 ub = ~sc->sc_regs->du_ip; 912 break; 913 914 case DMGET: 915 ub = ~sc->sc_regs->du_ip; 916 break; 917 } 918 (void)splx(s); 919 920 /* XXXX should keep DTR & RTS states in softc? */ 921 bits = TIOCM_DTR | TIOCM_RTS; 922 if (ub & (1 << unit)) 923 bits |= TIOCM_CTS; 924 if (ub & (4 << unit)) 925 bits |= TIOCM_DSR; 926 if (ub & (0x10 << unit)) 927 bits |= TIOCM_CD; 928 /* XXXX RI is not supported on all boards */ 929 if (sc->sc_regs->pad26 & (1 << unit)) 930 bits |= TIOCM_RI; 931 932 return(bits); 933 } 934 935 /* 936 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 937 */ 938 939 int 940 mfcintr(void *arg) 941 { 942 struct mfc_softc *scc = arg; 943 struct mfcs_softc *sc; 944 struct mfc_regs *regs; 945 struct tty *tp; 946 int istat, unit; 947 u_short c; 948 949 regs = scc->sc_regs; 950 istat = regs->du_isr & scc->imask; 951 if (istat == 0) 952 return (0); 953 unit = device_unit(&scc->sc_dev) * 2; 954 if (istat & 0x02) { /* channel A receive interrupt */ 955 sc = device_lookup_private(&mfcs_cd, unit); 956 while (1) { 957 c = regs->du_sra << 8; 958 if ((c & 0x0100) == 0) 959 break; 960 c |= regs->du_rba; 961 if (sc->incnt == SERIBUF_SIZE) 962 ++sc->ovfl; 963 else { 964 *sc->wptr++ = c; 965 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 966 sc->wptr = sc->inbuf; 967 ++sc->incnt; 968 if (sc->incnt > SERIBUF_SIZE - 16) 969 regs->du_btrst = 1; 970 } 971 if (c & 0x1000) 972 regs->du_cra = 0x40; 973 } 974 } 975 if (istat & 0x20) { /* channel B receive interrupt */ 976 sc = device_lookup_private(&mfcs_cd, unit + 1); 977 while (1) { 978 c = regs->du_srb << 8; 979 if ((c & 0x0100) == 0) 980 break; 981 c |= regs->du_rbb; 982 if (sc->incnt == SERIBUF_SIZE) 983 ++sc->ovfl; 984 else { 985 *sc->wptr++ = c; 986 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 987 sc->wptr = sc->inbuf; 988 ++sc->incnt; 989 if (sc->incnt > SERIBUF_SIZE - 16) 990 regs->du_btrst = 2; 991 } 992 if (c & 0x1000) 993 regs->du_crb = 0x40; 994 } 995 } 996 if (istat & 0x01) { /* channel A transmit interrupt */ 997 sc = device_lookup_private(&mfcs_cd, unit); 998 tp = sc->sc_tty; 999 if (sc->ptr == sc->end) { 1000 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1001 scc->imask &= ~0x01; 1002 regs->du_imr = scc->imask; 1003 softint_schedule(sc->mfcs_si); 1004 } 1005 else 1006 regs->du_tba = *sc->ptr++; 1007 } 1008 if (istat & 0x10) { /* channel B transmit interrupt */ 1009 sc = device_lookup_private(&mfcs_cd, unit + 1); 1010 tp = sc->sc_tty; 1011 if (sc->ptr == sc->end) { 1012 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1013 scc->imask &= ~0x10; 1014 regs->du_imr = scc->imask; 1015 softint_schedule(sc->mfcs_si); 1016 } 1017 else 1018 regs->du_tbb = *sc->ptr++; 1019 } 1020 if (istat & 0x80) { /* input port change interrupt */ 1021 c = regs->du_ipcr; 1022 printf ("%s: ipcr %02x", scc->sc_dev.dv_xname, c); 1023 } 1024 return(1); 1025 } 1026 1027 void 1028 mfcsxintr(int unit) 1029 { 1030 int s1, s2, ovfl; 1031 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, unit); 1032 struct tty *tp = sc->sc_tty; 1033 1034 /* 1035 * Make sure we're not interrupted by another 1036 * vbl, but allow level6 ints 1037 */ 1038 s1 = spltty(); 1039 1040 /* 1041 * pass along any acumulated information 1042 * while input is not blocked 1043 */ 1044 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1045 /* 1046 * no collision with ser_fastint() 1047 */ 1048 mfcseint(unit, *sc->rptr++); 1049 1050 ovfl = 0; 1051 /* lock against mfcs_fastint() */ 1052 s2 = splser(); 1053 --sc->incnt; 1054 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1055 sc->rptr = sc->inbuf; 1056 if (sc->ovfl != 0) { 1057 ovfl = sc->ovfl; 1058 sc->ovfl = 0; 1059 } 1060 splx(s2); 1061 if (ovfl != 0) 1062 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1063 sc->sc_dev.dv_xname, ovfl); 1064 } 1065 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1066 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1067 } 1068 splx(s1); 1069 } 1070 1071 void 1072 mfcseint(int unit, int stat) 1073 { 1074 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, unit); 1075 struct tty *tp; 1076 u_char ch; 1077 int c; 1078 1079 tp = sc->sc_tty; 1080 ch = stat & 0xff; 1081 c = ch; 1082 1083 if ((tp->t_state & TS_ISOPEN) == 0) { 1084 #ifdef KGDB 1085 extern const struct cdevsw ser_cdevsw; 1086 int maj; 1087 1088 /* we don't care about parity errors */ 1089 maj = cdevsw_lookup_major(&ser_cdevsw); 1090 if (kgdb_dev == makedev(maj, unit) && c == FRAME_END) 1091 kgdb_connect(0); /* trap into kgdb */ 1092 #endif 1093 return; 1094 } 1095 1096 /* 1097 * Check for break and (if enabled) parity error. 1098 */ 1099 if (stat & 0xc000) 1100 c |= TTY_FE; 1101 else if (stat & 0x2000) 1102 c |= TTY_PE; 1103 1104 if (stat & 0x1000) 1105 log(LOG_WARNING, "%s: fifo overflow\n", 1106 device_xname(device_lookup_private(&mfcs_cd, unit))); 1107 1108 tp->t_linesw->l_rint(c, tp); 1109 } 1110 1111 /* 1112 * This interrupt is periodically invoked in the vertical blank 1113 * interrupt. It's used to keep track of the modem control lines 1114 * and (new with the fast_int code) to move accumulated data 1115 * up into the tty layer. 1116 */ 1117 void 1118 mfcsmint(int unit) 1119 { 1120 struct tty *tp; 1121 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, unit); 1122 u_char stat, last, istat; 1123 1124 tp = sc->sc_tty; 1125 if (!tp) 1126 return; 1127 1128 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 1129 sc->rptr = sc->wptr = sc->inbuf; 1130 sc->incnt = 0; 1131 return; 1132 } 1133 /* 1134 * empty buffer 1135 */ 1136 mfcsxintr(unit); 1137 1138 stat = ~sc->sc_regs->du_ip; 1139 last = sc->sc_mfc->last_ip; 1140 sc->sc_mfc->last_ip = stat; 1141 1142 /* 1143 * check whether any interesting signal changed state 1144 */ 1145 istat = stat ^ last; 1146 1147 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1148 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1149 if (stat & (0x10 << (unit & 1))) 1150 tp->t_linesw->l_modem(tp, 1); 1151 else if (tp->t_linesw->l_modem(tp, 0) == 0) { 1152 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1153 } 1154 } 1155 } 1156 1157 void 1158 mfcs_intr_soft(void *arg) 1159 { 1160 struct mfcs_softc *sc = (struct mfcs_softc *)arg; 1161 struct tty *tp = sc->sc_tty; 1162 1163 if (tp->t_linesw) 1164 tp->t_linesw->l_start(tp); 1165 else 1166 mfcsstart(tp); 1167 } 1168