mfc.c revision 1.42
1 /* $NetBSD: mfc.c,v 1.42 2006/10/01 18:56:21 elad 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 #include "opt_kgdb.h" 33 34 /* 35 * Copyright (c) 1994 Michael L. Hitch 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include "opt_kgdb.h" 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: mfc.c,v 1.42 2006/10/01 18:56:21 elad Exp $"); 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/device.h> 67 #include <sys/tty.h> 68 #include <sys/proc.h> 69 #include <sys/file.h> 70 #include <sys/malloc.h> 71 #include <sys/uio.h> 72 #include <sys/kernel.h> 73 #include <sys/syslog.h> 74 #include <sys/queue.h> 75 #include <sys/conf.h> 76 #include <sys/kauth.h> 77 #include <machine/cpu.h> 78 #include <amiga/amiga/device.h> 79 #include <amiga/amiga/isr.h> 80 #include <amiga/amiga/custom.h> 81 #include <amiga/amiga/cia.h> 82 #include <amiga/amiga/cc.h> 83 #include <amiga/dev/zbusvar.h> 84 85 #include <dev/cons.h> 86 87 #include "mfcs.h" 88 89 #ifndef SEROBUF_SIZE 90 #define SEROBUF_SIZE 128 91 #endif 92 #ifndef SERIBUF_SIZE 93 #define SERIBUF_SIZE 1024 94 #endif 95 96 #define splser() spl6() 97 98 /* 99 * 68581 DUART registers 100 */ 101 struct mfc_regs { 102 volatile u_char du_mr1a; 103 #define du_mr2a du_mr1a 104 u_char pad0; 105 volatile u_char du_csra; 106 #define du_sra du_csra 107 u_char pad2; 108 volatile u_char du_cra; 109 u_char pad4; 110 volatile u_char du_tba; 111 #define du_rba du_tba 112 u_char pad6; 113 volatile u_char du_acr; 114 #define du_ipcr du_acr 115 u_char pad8; 116 volatile u_char du_imr; 117 #define du_isr du_imr 118 u_char pad10; 119 volatile u_char du_ctur; 120 #define du_cmsb du_ctur 121 u_char pad12; 122 volatile u_char du_ctlr; 123 #define du_clsb du_ctlr 124 u_char pad14; 125 volatile u_char du_mr1b; 126 #define du_mr2b du_mr1b 127 u_char pad16; 128 volatile u_char du_csrb; 129 #define du_srb du_csrb 130 u_char pad18; 131 volatile u_char du_crb; 132 u_char pad20; 133 volatile u_char du_tbb; 134 #define du_rbb du_tbb 135 u_char pad22; 136 volatile u_char du_ivr; 137 u_char pad24; 138 volatile u_char du_opcr; 139 #define du_ip du_opcr 140 u_char pad26; 141 volatile u_char du_btst; 142 #define du_strc du_btst 143 u_char pad28; 144 volatile u_char du_btrst; 145 #define du_stpc du_btrst 146 u_char pad30; 147 }; 148 149 /* 150 * 68681 DUART serial port registers 151 */ 152 struct duart_regs { 153 volatile u_char ch_mr1; 154 #define ch_mr2 ch_mr1 155 u_char pad0; 156 volatile u_char ch_csr; 157 #define ch_sr ch_csr 158 u_char pad1; 159 volatile u_char ch_cr; 160 u_char pad2; 161 volatile u_char ch_tb; 162 #define ch_rb ch_tb 163 u_char pad3; 164 }; 165 166 struct mfc_softc { 167 struct device sc_dev; 168 struct isr sc_isr; 169 struct mfc_regs *sc_regs; 170 u_long clk_frq; 171 u_short ct_val; 172 u_char ct_usecnt; 173 u_char imask; 174 u_char mfc_iii; 175 u_char last_ip; 176 }; 177 178 #if NMFCS > 0 179 struct mfcs_softc { 180 struct device sc_dev; 181 struct tty *sc_tty; 182 struct duart_regs *sc_duart; 183 struct mfc_regs *sc_regs; 184 struct mfc_softc *sc_mfc; 185 int swflags; 186 long flags; /* XXX */ 187 #define CT_USED 1 /* CT in use */ 188 u_short *rptr, *wptr, incnt, ovfl; 189 u_short inbuf[SERIBUF_SIZE]; 190 char *ptr, *end; 191 char outbuf[SEROBUF_SIZE]; 192 struct vbl_node vbl_node; 193 }; 194 #endif 195 196 #if NMFCP > 0 197 struct mfcp_softc { 198 }; 199 #endif 200 201 struct mfc_args { 202 struct zbus_args zargs; 203 const char *subdev; 204 char unit; 205 }; 206 207 int mfcprint(void *auxp, const char *); 208 void mfcattach(struct device *, struct device *, void *); 209 int mfcmatch(struct device *, struct cfdata *, void *); 210 211 #if NMFCS > 0 212 int mfcsmatch(struct device *, struct cfdata *, void *); 213 void mfcsattach(struct device *, struct device *, void *); 214 int mfcsparam( struct tty *, struct termios *); 215 int mfcshwiflow(struct tty *, int); 216 void mfcsstart(struct tty *); 217 int mfcsmctl(dev_t, int, int); 218 void mfcsxintr(int); 219 void mfcseint(int, int); 220 void mfcsmint(register int); 221 #endif 222 223 #if NMFCP > 0 224 void mfcpattach(struct device *, struct device *, void *); 225 int mfcpmatch(struct device *, struct cfdata *, void *); 226 #endif 227 int mfcintr(void *); 228 229 CFATTACH_DECL(mfc, sizeof(struct mfc_softc), 230 mfcmatch, mfcattach, NULL, NULL); 231 232 #if NMFCS > 0 233 CFATTACH_DECL(mfcs, sizeof(struct mfcs_softc), 234 mfcsmatch, mfcsattach, NULL, NULL); 235 236 extern struct cfdriver mfcs_cd; 237 #endif 238 239 #if NMFCP > 0 240 CFATTACH_DECL(mfcp, sizeof(struct mfcp_softc), 241 mfcpmatch, mfcpattach, NULL, NULL); 242 #endif 243 244 dev_type_open(mfcsopen); 245 dev_type_close(mfcsclose); 246 dev_type_read(mfcsread); 247 dev_type_write(mfcswrite); 248 dev_type_ioctl(mfcsioctl); 249 dev_type_stop(mfcsstop); 250 dev_type_tty(mfcstty); 251 dev_type_poll(mfcspoll); 252 253 const struct cdevsw mfcs_cdevsw = { 254 mfcsopen, mfcsclose, mfcsread, mfcswrite, mfcsioctl, 255 mfcsstop, mfcstty, mfcspoll, nommap, ttykqfilter, D_TTY 256 }; 257 258 int mfcs_active; 259 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 260 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 261 262 #ifdef notyet 263 /* 264 * MultiFaceCard III, II+ (not supported yet), and 265 * SerialMaster 500+ (not supported yet) 266 * baud rate tables for BRG set 1 [not used yet] 267 */ 268 269 const struct speedtab mfcs3speedtab1[] = { 270 { 0, 0 }, 271 { 100, 0x00 }, 272 { 220, 0x11 }, 273 { 600, 0x44 }, 274 { 1200, 0x55 }, 275 { 2400, 0x66 }, 276 { 4800, 0x88 }, 277 { 9600, 0x99 }, 278 { 19200, 0xbb }, 279 { 115200, 0xcc }, 280 { -1, -1 } 281 }; 282 283 /* 284 * MultiFaceCard II, I, and SerialMaster 500 285 * baud rate tables for BRG set 1 [not used yet] 286 */ 287 288 const struct speedtab mfcs2speedtab1[] = { 289 { 0, 0 }, 290 { 50, 0x00 }, 291 { 110, 0x11 }, 292 { 300, 0x44 }, 293 { 600, 0x55 }, 294 { 1200, 0x66 }, 295 { 2400, 0x88 }, 296 { 4800, 0x99 }, 297 { 9600, 0xbb }, 298 { 38400, 0xcc }, 299 { -1, -1 } 300 }; 301 #endif 302 303 /* 304 * MultiFaceCard III, II+ (not supported yet), and 305 * SerialMaster 500+ (not supported yet) 306 * baud rate tables for BRG set 2 307 */ 308 309 const struct speedtab mfcs3speedtab2[] = { 310 { 0, 0 }, 311 { 150, 0x00 }, 312 { 200, 0x11 }, 313 { 300, 0x33 }, 314 { 600, 0x44 }, 315 { 1200, 0x55 }, 316 { 2400, 0x66 }, 317 { 4800, 0x88 }, 318 { 9600, 0x99 }, 319 { 19200, 0xbb }, 320 { 38400, 0xcc }, 321 { -1, -1 } 322 }; 323 324 /* 325 * MultiFaceCard II, I, and SerialMaster 500 326 * baud rate tables for BRG set 2 327 */ 328 329 const struct speedtab mfcs2speedtab2[] = { 330 { 0, 0 }, 331 { 75, 0x00 }, 332 { 100, 0x11 }, 333 { 150, 0x33 }, 334 { 300, 0x44 }, 335 { 600, 0x55 }, 336 { 1200, 0x66 }, 337 { 2400, 0x88 }, 338 { 4800, 0x99 }, 339 { 9600, 0xbb }, 340 { 19200, 0xcc }, 341 { -1, -1 } 342 }; 343 344 /* 345 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 346 */ 347 int 348 mfcmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 349 { 350 struct zbus_args *zap; 351 352 zap = auxp; 353 if (zap->manid == 2092 && 354 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 355 356 return(1); 357 return(0); 358 } 359 360 void 361 mfcattach(struct device *pdp, struct device *dp, void *auxp) 362 { 363 struct mfc_softc *scc; 364 struct zbus_args *zap; 365 struct mfc_args ma; 366 int unit; 367 struct mfc_regs *rp; 368 369 zap = auxp; 370 371 printf ("\n"); 372 373 scc = (struct mfc_softc *)dp; 374 unit = device_unit(&scc->sc_dev); 375 scc->sc_regs = rp = zap->va; 376 if (zap->prodid == 18) 377 scc->mfc_iii = 3; 378 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 379 380 rp->du_opcr = 0x00; /* configure output port? */ 381 rp->du_btrst = 0x0f; /* clear modem lines */ 382 rp->du_ivr = 0; /* IVR */ 383 rp->du_imr = 0; /* IMR */ 384 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 385 rp->du_ctur = 0; 386 rp->du_ctlr = 4; 387 rp->du_csra = 0xcc; /* clock select = 38400 */ 388 rp->du_cra = 0x10; /* reset mode register ptr */ 389 rp->du_cra = 0x20; 390 rp->du_cra = 0x30; 391 rp->du_cra = 0x40; 392 rp->du_mr1a = 0x93; /* MRA1 */ 393 rp->du_mr2a = 0x17; /* MRA2 */ 394 rp->du_csrb = 0xcc; /* clock select = 38400 */ 395 rp->du_crb = 0x10; /* reset mode register ptr */ 396 rp->du_crb = 0x20; 397 rp->du_crb = 0x30; 398 rp->du_crb = 0x40; 399 rp->du_mr1b = 0x93; /* MRB1 */ 400 rp->du_mr2b = 0x17; /* MRB2 */ 401 rp->du_cra = 0x05; /* enable A Rx & Tx */ 402 rp->du_crb = 0x05; /* enable B Rx & Tx */ 403 404 scc->sc_isr.isr_intr = mfcintr; 405 scc->sc_isr.isr_arg = scc; 406 scc->sc_isr.isr_ipl = 6; 407 add_isr(&scc->sc_isr); 408 409 /* configure ports */ 410 bcopy(zap, &ma.zargs, sizeof(struct zbus_args)); 411 ma.subdev = "mfcs"; 412 ma.unit = unit * 2; 413 config_found(dp, &ma, mfcprint); 414 ma.unit = unit * 2 + 1; 415 config_found(dp, &ma, mfcprint); 416 ma.subdev = "mfcp"; 417 ma.unit = unit; 418 config_found(dp, &ma, mfcprint); 419 } 420 421 /* 422 * 423 */ 424 int 425 mfcsmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 426 { 427 struct mfc_args *ma; 428 429 ma = auxp; 430 if (strcmp(ma->subdev, "mfcs") == 0) 431 return (1); 432 return (0); 433 } 434 435 void 436 mfcsattach(struct device *pdp, struct device *dp, void *auxp) 437 { 438 int unit; 439 struct mfcs_softc *sc; 440 struct mfc_softc *scc; 441 struct mfc_args *ma; 442 struct mfc_regs *rp; 443 444 sc = (struct mfcs_softc *) dp; 445 scc = (struct mfc_softc *) pdp; 446 ma = auxp; 447 448 if (dp) { 449 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 450 SEROBUF_SIZE); 451 alloc_sicallback(); 452 } 453 454 unit = ma->unit; 455 mfcs_active |= 1 << unit; 456 sc->rptr = sc->wptr = sc->inbuf; 457 sc->sc_mfc = scc; 458 sc->sc_regs = rp = scc->sc_regs; 459 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? 460 __UNVOLATILE(&rp->du_mr1b) : __UNVOLATILE(&rp->du_mr1a)); 461 /* 462 * should have only one vbl routine to handle all ports? 463 */ 464 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 465 sc->vbl_node.data = (void *) unit; 466 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 467 } 468 469 /* 470 * print diag if pnp is NULL else just extra 471 */ 472 int 473 mfcprint(void *auxp, const char *pnp) 474 { 475 if (pnp == NULL) 476 return(UNCONF); 477 return(QUIET); 478 } 479 480 int 481 mfcsopen(dev_t dev, int flag, int mode, struct lwp *l) 482 { 483 struct tty *tp; 484 struct mfcs_softc *sc; 485 int unit, error, s; 486 487 error = 0; 488 unit = dev & 0x1f; 489 490 if (unit >= mfcs_cd.cd_ndevs || (mfcs_active & (1 << unit)) == 0) 491 return (ENXIO); 492 sc = mfcs_cd.cd_devs[unit]; 493 494 s = spltty(); 495 496 if (sc->sc_tty) 497 tp = sc->sc_tty; 498 else { 499 tp = sc->sc_tty = ttymalloc(); 500 tty_attach(tp); 501 } 502 503 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 504 tp->t_param = mfcsparam; 505 tp->t_dev = dev; 506 tp->t_hwiflow = mfcshwiflow; 507 508 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 509 return (EBUSY); 510 511 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 512 ttychars(tp); 513 if (tp->t_ispeed == 0) { 514 /* 515 * only when cleared do we reset to defaults. 516 */ 517 tp->t_iflag = TTYDEF_IFLAG; 518 tp->t_oflag = TTYDEF_OFLAG; 519 tp->t_cflag = TTYDEF_CFLAG; 520 tp->t_lflag = TTYDEF_LFLAG; 521 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 522 } 523 /* 524 * do these all the time 525 */ 526 if (sc->swflags & TIOCFLAG_CLOCAL) 527 tp->t_cflag |= CLOCAL; 528 if (sc->swflags & TIOCFLAG_CRTSCTS) 529 tp->t_cflag |= CRTSCTS; 530 if (sc->swflags & TIOCFLAG_MDMBUF) 531 tp->t_cflag |= MDMBUF; 532 mfcsparam(tp, &tp->t_termios); 533 ttsetwater(tp); 534 535 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 536 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 537 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 538 tp->t_state |= TS_CARR_ON; 539 else 540 tp->t_state &= ~TS_CARR_ON; 541 } 542 543 /* 544 * if NONBLOCK requested, ignore carrier 545 */ 546 if (flag & O_NONBLOCK) 547 goto done; 548 549 /* 550 * block waiting for carrier 551 */ 552 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 553 tp->t_wopen++; 554 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 555 TTIPRI | PCATCH, ttopen, 0); 556 tp->t_wopen--; 557 if (error) { 558 splx(s); 559 return(error); 560 } 561 } 562 done: 563 /* This is a way to handle lost XON characters */ 564 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 565 tp->t_state &= ~TS_TTSTOP; 566 ttstart (tp); 567 } 568 569 splx(s); 570 /* 571 * Reset the tty pointer, as there could have been a dialout 572 * use of the tty with a dialin open waiting. 573 */ 574 tp->t_dev = dev; 575 return tp->t_linesw->l_open(dev, tp); 576 } 577 578 /*ARGSUSED*/ 579 int 580 mfcsclose(dev_t dev, int flag, int mode, struct lwp *l) 581 { 582 struct tty *tp; 583 int unit; 584 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 585 struct mfc_softc *scc= sc->sc_mfc; 586 587 unit = dev & 31; 588 589 tp = sc->sc_tty; 590 tp->t_linesw->l_close(tp, flag); 591 sc->sc_duart->ch_cr = 0x70; /* stop break */ 592 593 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 594 scc->sc_regs->du_imr = scc->imask; 595 if (sc->flags & CT_USED) { 596 --scc->ct_usecnt; 597 sc->flags &= ~CT_USED; 598 } 599 600 /* 601 * If the device is closed, it's close, no matter whether we deal with 602 * modem control signals nor not. 603 */ 604 #if 0 605 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 606 (tp->t_state & TS_ISOPEN) == 0) 607 #endif 608 (void) mfcsmctl(dev, 0, DMSET); 609 ttyclose(tp); 610 #if not_yet 611 if (tp != &mfcs_cons) { 612 remove_vbl_function(&sc->vbl_node); 613 ttyfree(tp); 614 sc->sc_tty = (struct tty *) NULL; 615 } 616 #endif 617 return (0); 618 } 619 620 int 621 mfcsread(dev_t dev, struct uio *uio, int flag) 622 { 623 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 624 struct tty *tp = sc->sc_tty; 625 if (tp == NULL) 626 return(ENXIO); 627 return tp->t_linesw->l_read(tp, uio, flag); 628 } 629 630 int 631 mfcswrite(dev_t dev, struct uio *uio, int flag) 632 { 633 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 634 struct tty *tp = sc->sc_tty; 635 636 if (tp == NULL) 637 return(ENXIO); 638 return tp->t_linesw->l_write(tp, uio, flag); 639 } 640 641 int 642 mfcspoll(dev_t dev, int events, struct lwp *l) 643 { 644 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 645 struct tty *tp = sc->sc_tty; 646 647 if (tp == NULL) 648 return(ENXIO); 649 return ((*tp->t_linesw->l_poll)(tp, events, l)); 650 } 651 652 struct tty * 653 mfcstty(dev_t dev) 654 { 655 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 656 657 return (sc->sc_tty); 658 } 659 660 int 661 mfcsioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l) 662 { 663 register struct tty *tp; 664 register int error; 665 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 666 667 tp = sc->sc_tty; 668 if (!tp) 669 return ENXIO; 670 671 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 672 if (error != EPASSTHROUGH) 673 return(error); 674 675 error = ttioctl(tp, cmd, data, flag, l); 676 if (error != EPASSTHROUGH) 677 return(error); 678 679 switch (cmd) { 680 case TIOCSBRK: 681 sc->sc_duart->ch_cr = 0x60; /* start break */ 682 break; 683 684 case TIOCCBRK: 685 sc->sc_duart->ch_cr = 0x70; /* stop break */ 686 break; 687 688 case TIOCSDTR: 689 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 690 break; 691 692 case TIOCCDTR: 693 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 694 break; 695 696 case TIOCMSET: 697 (void) mfcsmctl(dev, *(int *) data, DMSET); 698 break; 699 700 case TIOCMBIS: 701 (void) mfcsmctl(dev, *(int *) data, DMBIS); 702 break; 703 704 case TIOCMBIC: 705 (void) mfcsmctl(dev, *(int *) data, DMBIC); 706 break; 707 708 case TIOCMGET: 709 *(int *)data = mfcsmctl(dev, 0, DMGET); 710 break; 711 case TIOCGFLAGS: 712 *(int *)data = SWFLAGS(dev); 713 break; 714 case TIOCSFLAGS: 715 error = kauth_authorize_generic(l->l_cred, 716 KAUTH_GENERIC_ISSUSER, &l->l_acflag); 717 if (error != 0) 718 return(EPERM); 719 720 sc->swflags = *(int *)data; 721 sc->swflags &= /* only allow valid flags */ 722 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 723 /* XXXX need to change duart parameters? */ 724 break; 725 default: 726 return(EPASSTHROUGH); 727 } 728 729 return(0); 730 } 731 732 int 733 mfcsparam(struct tty *tp, struct termios *t) 734 { 735 int cflag, unit, ospeed; 736 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 737 struct mfc_softc *scc= sc->sc_mfc; 738 739 cflag = t->c_cflag; 740 unit = tp->t_dev & 31; 741 if (sc->flags & CT_USED) { 742 --scc->ct_usecnt; 743 sc->flags &= ~CT_USED; 744 } 745 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 746 mfcs2speedtab2); 747 748 /* 749 * If Baud Rate Generator can't generate requested speed, 750 * try to use the counter/timer. 751 */ 752 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 753 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 754 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 755 ospeed = -1; 756 else { 757 scc->sc_regs->du_ctur = ospeed >> 8; 758 scc->sc_regs->du_ctlr = ospeed; 759 scc->ct_val = ospeed; 760 ++scc->ct_usecnt; 761 sc->flags |= CT_USED; 762 ospeed = 0xdd; 763 } 764 } 765 /* XXXX 68681 duart could handle split speeds */ 766 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 767 return(EINVAL); 768 769 /* XXXX handle parity, character size, stop bits, flow control */ 770 771 /* 772 * copy to tty 773 */ 774 tp->t_ispeed = t->c_ispeed; 775 tp->t_ospeed = t->c_ospeed; 776 tp->t_cflag = cflag; 777 778 /* 779 * enable interrupts 780 */ 781 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 782 scc->sc_regs->du_imr = scc->imask; 783 #if defined(DEBUG) && 0 784 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 785 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 786 #endif 787 if (ospeed == 0) 788 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 789 else { 790 /* 791 * (re)enable DTR 792 * and set baud rate. (8 bit mode) 793 */ 794 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 795 sc->sc_duart->ch_csr = ospeed; 796 } 797 return(0); 798 } 799 800 int 801 mfcshwiflow(struct tty *tp, int flag) 802 { 803 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 804 int unit = tp->t_dev & 1; 805 806 if (flag) 807 sc->sc_regs->du_btrst = 1 << unit; 808 else 809 sc->sc_regs->du_btst = 1 << unit; 810 return 1; 811 } 812 813 void 814 mfcsstart(struct tty *tp) 815 { 816 int cc, s, unit; 817 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 818 struct mfc_softc *scc= sc->sc_mfc; 819 820 if ((tp->t_state & TS_ISOPEN) == 0) 821 return; 822 823 unit = tp->t_dev & 1; 824 825 s = splser(); 826 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 827 goto out; 828 829 cc = tp->t_outq.c_cc; 830 if (cc <= tp->t_lowat) { 831 if (tp->t_state & TS_ASLEEP) { 832 tp->t_state &= ~TS_ASLEEP; 833 wakeup((caddr_t) & tp->t_outq); 834 } 835 selwakeup(&tp->t_wsel); 836 } 837 if (cc == 0 || (tp->t_state & TS_BUSY)) 838 goto out; 839 840 /* 841 * We only do bulk transfers if using CTSRTS flow control, not for 842 * (probably sloooow) ixon/ixoff devices. 843 */ 844 if ((tp->t_cflag & CRTSCTS) == 0) 845 cc = 1; 846 847 /* 848 * Limit the amount of output we do in one burst 849 * to prevent hogging the CPU. 850 */ 851 if (cc > SEROBUF_SIZE) 852 cc = SEROBUF_SIZE; 853 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 854 if (cc > 0) { 855 tp->t_state |= TS_BUSY; 856 857 sc->ptr = sc->outbuf; 858 sc->end = sc->outbuf + cc; 859 860 /* 861 * Get first character out, then have TBE-interrupts blow out 862 * further characters, until buffer is empty, and TS_BUSY gets 863 * cleared. 864 */ 865 sc->sc_duart->ch_tb = *sc->ptr++; 866 scc->imask |= 1 << (unit * 4); 867 sc->sc_regs->du_imr = scc->imask; 868 } 869 out: 870 splx(s); 871 } 872 873 /* 874 * Stop output on a line. 875 */ 876 /*ARGSUSED*/ 877 void 878 mfcsstop(struct tty *tp, int flag) 879 { 880 int s; 881 882 s = splser(); 883 if (tp->t_state & TS_BUSY) { 884 if ((tp->t_state & TS_TTSTOP) == 0) 885 tp->t_state |= TS_FLUSH; 886 } 887 splx(s); 888 } 889 890 int 891 mfcsmctl(dev_t dev, int bits, int how) 892 { 893 int unit, s; 894 u_char ub = 0; 895 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 896 897 unit = dev & 1; 898 899 /* 900 * convert TIOCM* mask into CIA mask 901 * which is active low 902 */ 903 if (how != DMGET) { 904 /* 905 * need to save current state of DTR & RTS ? 906 */ 907 if (bits & TIOCM_DTR) 908 ub |= 0x04 << unit; 909 if (bits & TIOCM_RTS) 910 ub |= 0x01 << unit; 911 } 912 s = splser(); 913 switch (how) { 914 case DMSET: 915 sc->sc_regs->du_btst = ub; 916 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 917 break; 918 919 case DMBIC: 920 sc->sc_regs->du_btrst = ub; 921 ub = ~sc->sc_regs->du_ip; 922 break; 923 924 case DMBIS: 925 sc->sc_regs->du_btst = ub; 926 ub = ~sc->sc_regs->du_ip; 927 break; 928 929 case DMGET: 930 ub = ~sc->sc_regs->du_ip; 931 break; 932 } 933 (void)splx(s); 934 935 /* XXXX should keep DTR & RTS states in softc? */ 936 bits = TIOCM_DTR | TIOCM_RTS; 937 if (ub & (1 << unit)) 938 bits |= TIOCM_CTS; 939 if (ub & (4 << unit)) 940 bits |= TIOCM_DSR; 941 if (ub & (0x10 << unit)) 942 bits |= TIOCM_CD; 943 /* XXXX RI is not supported on all boards */ 944 if (sc->sc_regs->pad26 & (1 << unit)) 945 bits |= TIOCM_RI; 946 947 return(bits); 948 } 949 950 /* 951 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 952 */ 953 954 int 955 mfcintr(void *arg) 956 { 957 struct mfc_softc *scc = arg; 958 struct mfcs_softc *sc; 959 struct mfc_regs *regs; 960 struct tty *tp; 961 int istat, unit; 962 u_short c; 963 964 regs = scc->sc_regs; 965 istat = regs->du_isr & scc->imask; 966 if (istat == 0) 967 return (0); 968 unit = device_unit(&scc->sc_dev) * 2; 969 if (istat & 0x02) { /* channel A receive interrupt */ 970 sc = mfcs_cd.cd_devs[unit]; 971 while (1) { 972 c = regs->du_sra << 8; 973 if ((c & 0x0100) == 0) 974 break; 975 c |= regs->du_rba; 976 if (sc->incnt == SERIBUF_SIZE) 977 ++sc->ovfl; 978 else { 979 *sc->wptr++ = c; 980 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 981 sc->wptr = sc->inbuf; 982 ++sc->incnt; 983 if (sc->incnt > SERIBUF_SIZE - 16) 984 regs->du_btrst = 1; 985 } 986 if (c & 0x1000) 987 regs->du_cra = 0x40; 988 } 989 } 990 if (istat & 0x20) { /* channel B receive interrupt */ 991 sc = mfcs_cd.cd_devs[unit + 1]; 992 while (1) { 993 c = regs->du_srb << 8; 994 if ((c & 0x0100) == 0) 995 break; 996 c |= regs->du_rbb; 997 if (sc->incnt == SERIBUF_SIZE) 998 ++sc->ovfl; 999 else { 1000 *sc->wptr++ = c; 1001 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 1002 sc->wptr = sc->inbuf; 1003 ++sc->incnt; 1004 if (sc->incnt > SERIBUF_SIZE - 16) 1005 regs->du_btrst = 2; 1006 } 1007 if (c & 0x1000) 1008 regs->du_crb = 0x40; 1009 } 1010 } 1011 if (istat & 0x01) { /* channel A transmit interrupt */ 1012 sc = mfcs_cd.cd_devs[unit]; 1013 tp = sc->sc_tty; 1014 if (sc->ptr == sc->end) { 1015 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1016 scc->imask &= ~0x01; 1017 regs->du_imr = scc->imask; 1018 add_sicallback (tp->t_linesw ? 1019 (sifunc_t)tp->t_linesw->l_start 1020 : (sifunc_t)mfcsstart, tp, NULL); 1021 1022 } 1023 else 1024 regs->du_tba = *sc->ptr++; 1025 } 1026 if (istat & 0x10) { /* channel B transmit interrupt */ 1027 sc = mfcs_cd.cd_devs[unit + 1]; 1028 tp = sc->sc_tty; 1029 if (sc->ptr == sc->end) { 1030 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1031 scc->imask &= ~0x10; 1032 regs->du_imr = scc->imask; 1033 add_sicallback (tp->t_linesw ? 1034 (sifunc_t)tp->t_linesw->l_start 1035 : (sifunc_t)mfcsstart, tp, NULL); 1036 } 1037 else 1038 regs->du_tbb = *sc->ptr++; 1039 } 1040 if (istat & 0x80) { /* input port change interrupt */ 1041 c = regs->du_ipcr; 1042 printf ("%s: ipcr %02x", scc->sc_dev.dv_xname, c); 1043 } 1044 return(1); 1045 } 1046 1047 void 1048 mfcsxintr(int unit) 1049 { 1050 int s1, s2, ovfl; 1051 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1052 struct tty *tp = sc->sc_tty; 1053 1054 /* 1055 * Make sure we're not interrupted by another 1056 * vbl, but allow level6 ints 1057 */ 1058 s1 = spltty(); 1059 1060 /* 1061 * pass along any acumulated information 1062 * while input is not blocked 1063 */ 1064 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1065 /* 1066 * no collision with ser_fastint() 1067 */ 1068 mfcseint(unit, *sc->rptr++); 1069 1070 ovfl = 0; 1071 /* lock against mfcs_fastint() */ 1072 s2 = splser(); 1073 --sc->incnt; 1074 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1075 sc->rptr = sc->inbuf; 1076 if (sc->ovfl != 0) { 1077 ovfl = sc->ovfl; 1078 sc->ovfl = 0; 1079 } 1080 splx(s2); 1081 if (ovfl != 0) 1082 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1083 sc->sc_dev.dv_xname, ovfl); 1084 } 1085 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1086 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1087 } 1088 splx(s1); 1089 } 1090 1091 void 1092 mfcseint(int unit, int stat) 1093 { 1094 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1095 struct tty *tp; 1096 u_char ch; 1097 int c; 1098 1099 tp = sc->sc_tty; 1100 ch = stat & 0xff; 1101 c = ch; 1102 1103 if ((tp->t_state & TS_ISOPEN) == 0) { 1104 #ifdef KGDB 1105 extern const struct cdevsw ser_cdevsw; 1106 int maj; 1107 1108 /* we don't care about parity errors */ 1109 maj = cdevsw_lookup_major(&ser_cdevsw); 1110 if (kgdb_dev == makedev(maj, unit) && c == FRAME_END) 1111 kgdb_connect(0); /* trap into kgdb */ 1112 #endif 1113 return; 1114 } 1115 1116 /* 1117 * Check for break and (if enabled) parity error. 1118 */ 1119 if (stat & 0xc000) 1120 c |= TTY_FE; 1121 else if (stat & 0x2000) 1122 c |= TTY_PE; 1123 1124 if (stat & 0x1000) 1125 log(LOG_WARNING, "%s: fifo overflow\n", 1126 ((struct mfcs_softc *)mfcs_cd.cd_devs[unit])->sc_dev.dv_xname); 1127 1128 tp->t_linesw->l_rint(c, tp); 1129 } 1130 1131 /* 1132 * This interrupt is periodically invoked in the vertical blank 1133 * interrupt. It's used to keep track of the modem control lines 1134 * and (new with the fast_int code) to move accumulated data 1135 * up into the tty layer. 1136 */ 1137 void 1138 mfcsmint(int unit) 1139 { 1140 struct tty *tp; 1141 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1142 u_char stat, last, istat; 1143 1144 tp = sc->sc_tty; 1145 if (!tp) 1146 return; 1147 1148 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 1149 sc->rptr = sc->wptr = sc->inbuf; 1150 sc->incnt = 0; 1151 return; 1152 } 1153 /* 1154 * empty buffer 1155 */ 1156 mfcsxintr(unit); 1157 1158 stat = ~sc->sc_regs->du_ip; 1159 last = sc->sc_mfc->last_ip; 1160 sc->sc_mfc->last_ip = stat; 1161 1162 /* 1163 * check whether any interesting signal changed state 1164 */ 1165 istat = stat ^ last; 1166 1167 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1168 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1169 if (stat & (0x10 << (unit & 1))) 1170 tp->t_linesw->l_modem(tp, 1); 1171 else if (tp->t_linesw->l_modem(tp, 0) == 0) { 1172 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1173 } 1174 } 1175 } 1176
Indexes created Thu Sep 25 02:09:54 GMT 2025