sab.c revision 1.17
1 /* $NetBSD: sab.c,v 1.17 2004/06/10 12:11:19 seb Exp $ */ 2 /* $OpenBSD: sab.c,v 1.7 2002/04/08 17:49:42 jason Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Jason L. Wright (jason (at) thought.net) 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Jason L. Wright 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 * Effort sponsored in part by the Defense Advanced Research Projects 35 * Agency (DARPA) and Air Force Research Laboratory, Air Force 36 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 37 * 38 */ 39 40 /* 41 * SAB82532 Dual UART driver 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: sab.c,v 1.17 2004/06/10 12:11:19 seb Exp $"); 46 47 #include <sys/types.h> 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/conf.h> 52 #include <sys/file.h> 53 #include <sys/ioctl.h> 54 #include <sys/kernel.h> 55 #include <sys/proc.h> 56 #include <sys/tty.h> 57 #include <sys/syslog.h> 58 59 #include <machine/autoconf.h> 60 #include <machine/openfirm.h> 61 62 #include <dev/cons.h> 63 64 #include <dev/ebus/ebusreg.h> 65 #include <dev/ebus/ebusvar.h> 66 #include <sparc64/dev/sab82532reg.h> 67 68 #define SABUNIT(x) (minor(x) & 0x7ffff) 69 #define SABDIALOUT(x) (minor(x) & 0x80000) 70 71 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 72 73 struct sab_softc { 74 struct device sc_dv; 75 struct intrhand * sc_ih; 76 bus_space_tag_t sc_bt; 77 bus_space_handle_t sc_bh; 78 struct sabtty_softc * sc_child[SAB_NCHAN]; 79 u_int sc_nchild; 80 void * sc_softintr; 81 int sc_node; 82 }; 83 84 struct sabtty_attach_args { 85 u_int sbt_portno; 86 }; 87 88 struct sabtty_softc { 89 struct device sc_dv; 90 struct sab_softc * sc_parent; 91 bus_space_tag_t sc_bt; 92 bus_space_handle_t sc_bh; 93 struct tty * sc_tty; 94 u_int sc_portno; 95 u_int8_t sc_pvr_dtr, sc_pvr_dsr; 96 u_int8_t sc_imr0, sc_imr1; 97 int sc_openflags; 98 u_char * sc_txp; 99 int sc_txc; 100 int sc_flags; 101 #define SABTTYF_STOP 0x01 102 #define SABTTYF_DONE 0x02 103 #define SABTTYF_RINGOVERFLOW 0x04 104 #define SABTTYF_CDCHG 0x08 105 #define SABTTYF_CONS_IN 0x10 106 #define SABTTYF_CONS_OUT 0x20 107 #define SABTTYF_TXDRAIN 0x40 108 #define SABTTYF_DONTDDB 0x80 109 u_int8_t sc_rbuf[SABTTY_RBUF_SIZE]; 110 u_int8_t *sc_rend, *sc_rput, *sc_rget; 111 u_int8_t sc_polling, sc_pollrfc; 112 }; 113 114 struct sabtty_softc *sabtty_cons_input; 115 struct sabtty_softc *sabtty_cons_output; 116 117 #define SAB_READ(sc,r) \ 118 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 119 #define SAB_WRITE(sc,r,v) \ 120 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 121 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 122 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 123 124 int sab_match(struct device *, struct cfdata *, void *); 125 void sab_attach(struct device *, struct device *, void *); 126 int sab_print(void *, const char *); 127 int sab_intr(void *); 128 129 void sab_softintr(void *); 130 void sab_cnputc(dev_t, int); 131 int sab_cngetc(dev_t); 132 void sab_cnpollc(dev_t, int); 133 134 int sabtty_match(struct device *, struct cfdata *, void *); 135 void sabtty_attach(struct device *, struct device *, void *); 136 void sabtty_start(struct tty *); 137 int sabtty_param(struct tty *, struct termios *); 138 int sabtty_intr(struct sabtty_softc *, int *); 139 void sabtty_softintr(struct sabtty_softc *); 140 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 141 void sabtty_cec_wait(struct sabtty_softc *); 142 void sabtty_tec_wait(struct sabtty_softc *); 143 void sabtty_reset(struct sabtty_softc *); 144 void sabtty_flush(struct sabtty_softc *); 145 int sabtty_speed(int); 146 void sabtty_console_flags(struct sabtty_softc *); 147 void sabtty_cnpollc(struct sabtty_softc *, int); 148 void sabtty_shutdown(void *); 149 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 150 151 void sabtty_cnputc(struct sabtty_softc *, int); 152 int sabtty_cngetc(struct sabtty_softc *); 153 154 CFATTACH_DECL(sab, sizeof(struct sab_softc), 155 sab_match, sab_attach, NULL, NULL); 156 157 extern struct cfdriver sab_cd; 158 159 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 160 sabtty_match, sabtty_attach, NULL, NULL); 161 162 extern struct cfdriver sabtty_cd; 163 164 dev_type_open(sabopen); 165 dev_type_close(sabclose); 166 dev_type_read(sabread); 167 dev_type_write(sabwrite); 168 dev_type_ioctl(sabioctl); 169 dev_type_stop(sabstop); 170 dev_type_tty(sabtty); 171 dev_type_poll(sabpoll); 172 173 static struct cnm_state sabtty_cnm_state; 174 175 const struct cdevsw sabtty_cdevsw = { 176 sabopen, sabclose, sabread, sabwrite, sabioctl, 177 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 178 }; 179 180 struct sabtty_rate { 181 int baud; 182 int n, m; 183 }; 184 185 struct sabtty_rate sabtty_baudtable[] = { 186 { 50, 35, 10 }, 187 { 75, 47, 9 }, 188 { 110, 32, 9 }, 189 { 134, 53, 8 }, 190 { 150, 47, 8 }, 191 { 200, 35, 8 }, 192 { 300, 47, 7 }, 193 { 600, 47, 6 }, 194 { 1200, 47, 5 }, 195 { 1800, 31, 5 }, 196 { 2400, 47, 4 }, 197 { 4800, 47, 3 }, 198 { 9600, 47, 2 }, 199 { 19200, 47, 1 }, 200 { 38400, 23, 1 }, 201 { 57600, 15, 1 }, 202 { 115200, 7, 1 }, 203 { 230400, 3, 1 }, 204 { 460800, 1, 1 }, 205 { 76800, 11, 1 }, 206 { 153600, 5, 1 }, 207 { 307200, 3, 1 }, 208 { 614400, 3, 0 }, 209 { 921600, 0, 1 }, 210 }; 211 212 int 213 sab_match(parent, match, aux) 214 struct device *parent; 215 struct cfdata *match; 216 void *aux; 217 { 218 struct ebus_attach_args *ea = aux; 219 char *compat; 220 221 if (strcmp(ea->ea_name, "se") == 0) 222 return (1); 223 224 compat = prom_getpropstring(ea->ea_node, "compatible"); 225 if (compat != NULL && !strcmp(compat, "sab82532")) 226 return (1); 227 228 return (0); 229 } 230 231 void 232 sab_attach(parent, self, aux) 233 struct device *parent; 234 struct device *self; 235 void *aux; 236 { 237 struct sab_softc *sc = (struct sab_softc *)self; 238 struct ebus_attach_args *ea = aux; 239 u_int8_t r; 240 u_int i; 241 242 sc->sc_bt = ea->ea_bustag; 243 sc->sc_node = ea->ea_node; 244 245 /* Use prom mapping, if available. */ 246 if (ea->ea_nvaddr) 247 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], &sc->sc_bh); 248 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 249 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 250 printf(": can't map register space\n"); 251 return; 252 } 253 254 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 255 IPL_TTY, sab_intr, sc); 256 if (sc->sc_ih == NULL) { 257 printf(": can't map interrupt\n"); 258 return; 259 } 260 261 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 262 if (sc->sc_softintr == NULL) { 263 printf(": can't get soft intr\n"); 264 return; 265 } 266 267 printf(": rev "); 268 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 269 switch (r) { 270 case SAB_VSTR_V_1: 271 printf("1"); 272 break; 273 case SAB_VSTR_V_2: 274 printf("2"); 275 break; 276 case SAB_VSTR_V_32: 277 printf("3.2"); 278 break; 279 default: 280 printf("unknown(0x%x)", r); 281 break; 282 } 283 printf("\n"); 284 285 /* Let current output drain */ 286 DELAY(100000); 287 288 /* Set all pins, except DTR pins to be inputs */ 289 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 290 /* Disable port interrupts */ 291 SAB_WRITE(sc, SAB_PIM, 0xff); 292 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 293 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 294 295 for (i = 0; i < SAB_NCHAN; i++) { 296 struct sabtty_attach_args sta; 297 298 sta.sbt_portno = i; 299 sc->sc_child[i] = (struct sabtty_softc *)config_found_sm(self, 300 &sta, sab_print, sabtty_match); 301 if (sc->sc_child[i] != NULL) 302 sc->sc_nchild++; 303 } 304 } 305 306 int 307 sab_print(args, name) 308 void *args; 309 const char *name; 310 { 311 struct sabtty_attach_args *sa = args; 312 313 if (name) 314 aprint_normal("sabtty at %s", name); 315 aprint_normal(" port %d", sa->sbt_portno); 316 return (UNCONF); 317 } 318 319 int 320 sab_intr(vsc) 321 void *vsc; 322 { 323 struct sab_softc *sc = vsc; 324 int r = 0, needsoft = 0; 325 u_int8_t gis; 326 327 gis = SAB_READ(sc, SAB_GIS); 328 329 /* channel A */ 330 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 331 sc->sc_child[0]->sc_tty) 332 r |= sabtty_intr(sc->sc_child[0], &needsoft); 333 334 /* channel B */ 335 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 336 sc->sc_child[1]->sc_tty) 337 r |= sabtty_intr(sc->sc_child[1], &needsoft); 338 339 if (needsoft) 340 softintr_schedule(sc->sc_softintr); 341 342 return (r); 343 } 344 345 void 346 sab_softintr(vsc) 347 void *vsc; 348 { 349 struct sab_softc *sc = vsc; 350 351 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 352 sabtty_softintr(sc->sc_child[0]); 353 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 354 sabtty_softintr(sc->sc_child[1]); 355 } 356 357 int 358 sabtty_match(parent, match, aux) 359 struct device *parent; 360 struct cfdata *match; 361 void *aux; 362 { 363 struct sabtty_attach_args *sa = aux; 364 365 if (sa->sbt_portno < SAB_NCHAN) 366 return (1); 367 return (0); 368 } 369 370 void 371 sabtty_attach(parent, self, aux) 372 struct device *parent; 373 struct device *self; 374 void *aux; 375 { 376 struct sabtty_softc *sc = (struct sabtty_softc *)self; 377 struct sabtty_attach_args *sa = aux; 378 int r; 379 int maj; 380 381 sc->sc_tty = ttymalloc(); 382 if (sc->sc_tty == NULL) { 383 printf(": failed to allocate tty\n"); 384 return; 385 } 386 tty_attach(sc->sc_tty); 387 sc->sc_tty->t_oproc = sabtty_start; 388 sc->sc_tty->t_param = sabtty_param; 389 390 sc->sc_parent = (struct sab_softc *)parent; 391 sc->sc_bt = sc->sc_parent->sc_bt; 392 sc->sc_portno = sa->sbt_portno; 393 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 394 395 switch (sa->sbt_portno) { 396 case 0: /* port A */ 397 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 398 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 399 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 400 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 401 break; 402 case 1: /* port B */ 403 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 404 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 405 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 406 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 407 break; 408 default: 409 printf(": invalid channel: %u\n", sa->sbt_portno); 410 return; 411 } 412 if (r != 0) { 413 printf(": failed to allocate register subregion\n"); 414 return; 415 } 416 417 sabtty_console_flags(sc); 418 419 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 420 struct termios t; 421 char *acc; 422 423 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 424 case SABTTYF_CONS_IN: 425 acc = "input"; 426 break; 427 case SABTTYF_CONS_OUT: 428 acc = "output"; 429 break; 430 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 431 default: 432 acc = "i/o"; 433 break; 434 } 435 436 t.c_ispeed= 0; 437 t.c_ospeed = 9600; 438 t.c_cflag = CREAD | CS8 | HUPCL; 439 sc->sc_tty->t_ospeed = 0; 440 sabttyparam(sc, sc->sc_tty, &t); 441 442 if (sc->sc_flags & SABTTYF_CONS_IN) { 443 sabtty_cons_input = sc; 444 cn_tab->cn_pollc = sab_cnpollc; 445 cn_tab->cn_getc = sab_cngetc; 446 maj = cdevsw_lookup_major(&sabtty_cdevsw); 447 cn_tab->cn_dev = makedev(maj, self->dv_unit); 448 shutdownhook_establish(sabtty_shutdown, sc); 449 cn_init_magic(&sabtty_cnm_state); 450 cn_set_magic("\047\001"); /* default magic is BREAK */ 451 } 452 453 if (sc->sc_flags & SABTTYF_CONS_OUT) { 454 sabtty_cons_output = sc; 455 cn_tab->cn_putc = sab_cnputc; 456 maj = cdevsw_lookup_major(&sabtty_cdevsw); 457 cn_tab->cn_dev = makedev(maj, self->dv_unit); 458 } 459 printf(": console %s", acc); 460 } else { 461 /* Not a console... */ 462 sabtty_reset(sc); 463 } 464 465 printf("\n"); 466 } 467 468 int 469 sabtty_intr(sc, needsoftp) 470 struct sabtty_softc *sc; 471 int *needsoftp; 472 { 473 u_int8_t isr0, isr1; 474 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 475 476 isr0 = SAB_READ(sc, SAB_ISR0); 477 isr1 = SAB_READ(sc, SAB_ISR1); 478 479 if (isr0 || isr1) 480 r = 1; 481 482 if (isr0 & SAB_ISR0_RPF) { 483 len = 32; 484 clearfifo = 1; 485 } 486 if (isr0 & SAB_ISR0_TCD) { 487 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 488 clearfifo = 1; 489 } 490 if (isr0 & SAB_ISR0_TIME) { 491 sabtty_cec_wait(sc); 492 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 493 } 494 if (isr0 & SAB_ISR0_RFO) { 495 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 496 clearfifo = 1; 497 } 498 if (len != 0) { 499 u_int8_t *ptr, b; 500 501 ptr = sc->sc_rput; 502 for (i = 0; i < len; i++) { 503 b = SAB_READ(sc, SAB_RFIFO); 504 if (i % 2 == 0) /* skip status byte */ 505 cn_check_magic(sc->sc_tty->t_dev, 506 b, sabtty_cnm_state); 507 *ptr++ = b; 508 if (ptr == sc->sc_rend) 509 ptr = sc->sc_rbuf; 510 if (ptr == sc->sc_rget) { 511 if (ptr == sc->sc_rbuf) 512 ptr = sc->sc_rend; 513 ptr--; 514 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 515 } 516 } 517 sc->sc_rput = ptr; 518 needsoft = 1; 519 } 520 521 if (clearfifo) { 522 sabtty_cec_wait(sc); 523 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 524 } 525 526 if (isr0 & SAB_ISR0_CDSC) { 527 sc->sc_flags |= SABTTYF_CDCHG; 528 needsoft = 1; 529 } 530 531 if (isr1 & SAB_ISR1_BRKT) 532 cn_check_magic(sc->sc_tty->t_dev, 533 CNC_BREAK, sabtty_cnm_state); 534 535 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 536 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 537 (sc->sc_flags & SABTTYF_STOP) == 0) { 538 if (sc->sc_txc < 32) 539 len = sc->sc_txc; 540 else 541 len = 32; 542 543 if (len > 0) { 544 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 545 sc->sc_txp += len; 546 sc->sc_txc -= len; 547 548 sabtty_cec_wait(sc); 549 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 550 551 /* 552 * Prevent the false end of xmit from 553 * confusing things below. 554 */ 555 isr1 &= ~SAB_ISR1_ALLS; 556 } 557 } 558 559 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 560 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 561 sc->sc_imr1 |= SAB_IMR1_XPR; 562 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 563 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 564 } 565 } 566 } 567 568 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 569 (sc->sc_flags & SABTTYF_STOP))) { 570 if (sc->sc_flags & SABTTYF_TXDRAIN) 571 wakeup(sc); 572 sc->sc_flags &= ~SABTTYF_STOP; 573 sc->sc_flags |= SABTTYF_DONE; 574 sc->sc_imr1 |= SAB_IMR1_ALLS; 575 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 576 needsoft = 1; 577 } 578 579 if (needsoft) 580 *needsoftp = needsoft; 581 return (r); 582 } 583 584 void 585 sabtty_softintr(sc) 586 struct sabtty_softc *sc; 587 { 588 struct tty *tp = sc->sc_tty; 589 int s, flags; 590 u_int8_t r; 591 592 if (tp == NULL) 593 return; 594 595 if ((tp->t_state & TS_ISOPEN) == 0) 596 return; 597 598 while (sc->sc_rget != sc->sc_rput) { 599 int data; 600 u_int8_t stat; 601 602 data = sc->sc_rget[0]; 603 stat = sc->sc_rget[1]; 604 sc->sc_rget += 2; 605 if (stat & SAB_RSTAT_PE) 606 data |= TTY_PE; 607 if (stat & SAB_RSTAT_FE) 608 data |= TTY_FE; 609 if (sc->sc_rget == sc->sc_rend) 610 sc->sc_rget = sc->sc_rbuf; 611 612 (*tp->t_linesw->l_rint)(data, tp); 613 } 614 615 s = splhigh(); 616 flags = sc->sc_flags; 617 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 618 splx(s); 619 620 if (flags & SABTTYF_CDCHG) { 621 s = spltty(); 622 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 623 splx(s); 624 625 (*tp->t_linesw->l_modem)(tp, r); 626 } 627 628 if (flags & SABTTYF_RINGOVERFLOW) 629 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 630 631 if (flags & SABTTYF_DONE) { 632 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 633 tp->t_state &= ~TS_BUSY; 634 (*tp->t_linesw->l_start)(tp); 635 } 636 } 637 638 int 639 sabopen(dev, flags, mode, p) 640 dev_t dev; 641 int flags, mode; 642 struct proc *p; 643 { 644 struct sabtty_softc *sc; 645 struct tty *tp; 646 int s, s1; 647 648 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 649 if (sc == NULL) 650 return (ENXIO); 651 652 tp = sc->sc_tty; 653 tp->t_dev = dev; 654 655 if ((tp->t_state & TS_ISOPEN) == 0) { 656 ttychars(tp); 657 tp->t_iflag = TTYDEF_IFLAG; 658 tp->t_oflag = TTYDEF_OFLAG; 659 tp->t_cflag = TTYDEF_CFLAG; 660 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 661 tp->t_cflag |= CLOCAL; 662 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 663 tp->t_cflag |= CRTSCTS; 664 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 665 tp->t_cflag |= MDMBUF; 666 tp->t_lflag = TTYDEF_LFLAG; 667 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 668 669 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 670 671 s = spltty(); 672 673 ttsetwater(tp); 674 675 s1 = splhigh(); 676 sabtty_reset(sc); 677 sabtty_param(tp, &tp->t_termios); 678 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 679 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 680 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 681 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 682 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 683 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 684 sabtty_cec_wait(sc); 685 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 686 sabtty_cec_wait(sc); 687 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 688 sabtty_cec_wait(sc); 689 splx(s1); 690 691 sabtty_flush(sc); 692 693 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 694 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 695 tp->t_state |= TS_CARR_ON; 696 else 697 tp->t_state &= ~TS_CARR_ON; 698 } else if ((tp->t_state & TS_XCLUDE) && 699 (!suser(p->p_ucred, &p->p_acflag))) { 700 return (EBUSY); 701 } else { 702 s = spltty(); 703 } 704 705 if ((flags & O_NONBLOCK) == 0) { 706 while ((tp->t_cflag & CLOCAL) == 0 && 707 (tp->t_state & TS_CARR_ON) == 0) { 708 int error; 709 710 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 711 "sabttycd", 0); 712 if (error != 0) { 713 splx(s); 714 return (error); 715 } 716 } 717 } 718 719 splx(s); 720 721 s = (*tp->t_linesw->l_open)(dev, tp); 722 if (s != 0) { 723 if (tp->t_state & TS_ISOPEN) 724 return (s); 725 726 if (tp->t_cflag & HUPCL) { 727 sabtty_mdmctrl(sc, 0, DMSET); 728 (void)tsleep(sc, TTIPRI, ttclos, hz); 729 } 730 731 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 732 /* Flush and power down if we're not the console */ 733 sabtty_flush(sc); 734 sabtty_reset(sc); 735 } 736 } 737 return (s); 738 } 739 740 int 741 sabclose(dev, flags, mode, p) 742 dev_t dev; 743 int flags, mode; 744 struct proc *p; 745 { 746 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 747 struct sab_softc *bc = sc->sc_parent; 748 struct tty *tp = sc->sc_tty; 749 int s; 750 751 (*tp->t_linesw->l_close)(tp, flags); 752 753 s = spltty(); 754 755 if ((tp->t_state & TS_ISOPEN) == 0) { 756 /* Wait for output drain */ 757 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 758 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 759 sc->sc_flags |= SABTTYF_TXDRAIN; 760 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 761 sc->sc_imr1 |= SAB_IMR1_ALLS; 762 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 763 sc->sc_flags &= ~SABTTYF_TXDRAIN; 764 765 if (tp->t_cflag & HUPCL) { 766 sabtty_mdmctrl(sc, 0, DMSET); 767 (void)tsleep(bc, TTIPRI, ttclos, hz); 768 } 769 770 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 771 /* Flush and power down if we're not the console */ 772 sabtty_flush(sc); 773 sabtty_reset(sc); 774 } 775 } 776 777 ttyclose(tp); 778 splx(s); 779 780 return (0); 781 } 782 783 int 784 sabread(dev, uio, flags) 785 dev_t dev; 786 struct uio *uio; 787 int flags; 788 { 789 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 790 struct tty *tp = sc->sc_tty; 791 792 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 793 } 794 795 int 796 sabwrite(dev, uio, flags) 797 dev_t dev; 798 struct uio *uio; 799 int flags; 800 { 801 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 802 struct tty *tp = sc->sc_tty; 803 804 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 805 } 806 807 int 808 sabioctl(dev, cmd, data, flags, p) 809 dev_t dev; 810 u_long cmd; 811 caddr_t data; 812 int flags; 813 struct proc *p; 814 { 815 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 816 struct tty *tp = sc->sc_tty; 817 int error; 818 819 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 820 if (error >= 0) 821 return (error); 822 823 error = ttioctl(tp, cmd, data, flags, p); 824 if (error >= 0) 825 return (error); 826 827 error = 0; 828 829 switch (cmd) { 830 case TIOCSBRK: 831 SAB_WRITE(sc, SAB_DAFO, 832 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 833 break; 834 case TIOCCBRK: 835 SAB_WRITE(sc, SAB_DAFO, 836 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 837 break; 838 case TIOCSDTR: 839 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 840 break; 841 case TIOCCDTR: 842 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 843 break; 844 case TIOCMBIS: 845 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 846 break; 847 case TIOCMBIC: 848 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 849 break; 850 case TIOCMGET: 851 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 852 break; 853 case TIOCMSET: 854 sabtty_mdmctrl(sc, *((int *)data), DMSET); 855 break; 856 case TIOCGFLAGS: 857 *((int *)data) = sc->sc_openflags; 858 break; 859 case TIOCSFLAGS: 860 if (suser(p->p_ucred, &p->p_acflag)) 861 error = EPERM; 862 else 863 sc->sc_openflags = *((int *)data) & 864 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 865 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 866 break; 867 default: 868 error = ENOTTY; 869 } 870 871 return (error); 872 } 873 874 struct tty * 875 sabtty(dev) 876 dev_t dev; 877 { 878 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 879 880 return (sc->sc_tty); 881 } 882 883 void 884 sabstop(tp, flag) 885 struct tty *tp; 886 int flag; 887 { 888 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 889 int s; 890 891 s = spltty(); 892 if (tp->t_state & TS_BUSY) { 893 if ((tp->t_state & TS_TTSTOP) == 0) 894 tp->t_state |= TS_FLUSH; 895 sc->sc_flags |= SABTTYF_STOP; 896 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 897 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 898 } 899 splx(s); 900 } 901 902 int 903 sabpoll(dev, events, p) 904 dev_t dev; 905 int events; 906 struct proc *p; 907 { 908 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 909 struct tty *tp = sc->sc_tty; 910 911 return ((*tp->t_linesw->l_poll)(tp, events, p)); 912 } 913 914 int 915 sabtty_mdmctrl(sc, bits, how) 916 struct sabtty_softc *sc; 917 int bits, how; 918 { 919 u_int8_t r; 920 int s; 921 922 s = spltty(); 923 switch (how) { 924 case DMGET: 925 bits = 0; 926 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 927 bits |= TIOCM_CTS; 928 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 929 bits |= TIOCM_CD; 930 931 r = SAB_READ(sc, SAB_PVR); 932 if ((r & sc->sc_pvr_dtr) == 0) 933 bits |= TIOCM_DTR; 934 if ((r & sc->sc_pvr_dsr) == 0) 935 bits |= TIOCM_DSR; 936 937 r = SAB_READ(sc, SAB_MODE); 938 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 939 bits |= TIOCM_RTS; 940 break; 941 case DMSET: 942 r = SAB_READ(sc, SAB_MODE); 943 if (bits & TIOCM_RTS) { 944 r &= ~SAB_MODE_FRTS; 945 r |= SAB_MODE_RTS; 946 } else 947 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 948 SAB_WRITE(sc, SAB_MODE, r); 949 950 r = SAB_READ(sc, SAB_PVR); 951 if (bits & TIOCM_DTR) 952 r &= ~sc->sc_pvr_dtr; 953 else 954 r |= sc->sc_pvr_dtr; 955 SAB_WRITE(sc, SAB_PVR, r); 956 break; 957 case DMBIS: 958 if (bits & TIOCM_RTS) { 959 r = SAB_READ(sc, SAB_MODE); 960 r &= ~SAB_MODE_FRTS; 961 r |= SAB_MODE_RTS; 962 SAB_WRITE(sc, SAB_MODE, r); 963 } 964 if (bits & TIOCM_DTR) { 965 r = SAB_READ(sc, SAB_PVR); 966 r &= ~sc->sc_pvr_dtr; 967 SAB_WRITE(sc, SAB_PVR, r); 968 } 969 break; 970 case DMBIC: 971 if (bits & TIOCM_RTS) { 972 r = SAB_READ(sc, SAB_MODE); 973 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 974 SAB_WRITE(sc, SAB_MODE, r); 975 } 976 if (bits & TIOCM_DTR) { 977 r = SAB_READ(sc, SAB_PVR); 978 r |= sc->sc_pvr_dtr; 979 SAB_WRITE(sc, SAB_PVR, r); 980 } 981 break; 982 } 983 splx(s); 984 return (bits); 985 } 986 987 int 988 sabttyparam(sc, tp, t) 989 struct sabtty_softc *sc; 990 struct tty *tp; 991 struct termios *t; 992 { 993 int s, ospeed; 994 tcflag_t cflag; 995 u_int8_t dafo, r; 996 997 ospeed = sabtty_speed(t->c_ospeed); 998 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 999 return (EINVAL); 1000 1001 s = spltty(); 1002 1003 /* hang up line if ospeed is zero, otherwise raise dtr */ 1004 sabtty_mdmctrl(sc, TIOCM_DTR, 1005 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1006 1007 dafo = SAB_READ(sc, SAB_DAFO); 1008 1009 cflag = t->c_cflag; 1010 1011 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1012 cflag |= CLOCAL; 1013 cflag &= ~HUPCL; 1014 } 1015 1016 if (cflag & CSTOPB) 1017 dafo |= SAB_DAFO_STOP; 1018 else 1019 dafo &= ~SAB_DAFO_STOP; 1020 1021 dafo &= ~SAB_DAFO_CHL_CSIZE; 1022 switch (cflag & CSIZE) { 1023 case CS5: 1024 dafo |= SAB_DAFO_CHL_CS5; 1025 break; 1026 case CS6: 1027 dafo |= SAB_DAFO_CHL_CS6; 1028 break; 1029 case CS7: 1030 dafo |= SAB_DAFO_CHL_CS7; 1031 break; 1032 default: 1033 dafo |= SAB_DAFO_CHL_CS8; 1034 break; 1035 } 1036 1037 dafo &= ~SAB_DAFO_PARMASK; 1038 if (cflag & PARENB) { 1039 if (cflag & PARODD) 1040 dafo |= SAB_DAFO_PAR_ODD; 1041 else 1042 dafo |= SAB_DAFO_PAR_EVEN; 1043 } else 1044 dafo |= SAB_DAFO_PAR_NONE; 1045 1046 if (ospeed != 0) { 1047 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1048 r = SAB_READ(sc, SAB_CCR2); 1049 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1050 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1051 SAB_WRITE(sc, SAB_CCR2, r); 1052 } 1053 1054 r = SAB_READ(sc, SAB_MODE); 1055 r |= SAB_MODE_RAC; 1056 if (cflag & CRTSCTS) { 1057 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1058 r |= SAB_MODE_FRTS; 1059 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1060 } else { 1061 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1062 r &= ~SAB_MODE_FRTS; 1063 sc->sc_imr1 |= SAB_IMR1_CSC; 1064 } 1065 SAB_WRITE(sc, SAB_MODE, r); 1066 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1067 1068 tp->t_cflag = cflag; 1069 1070 splx(s); 1071 return (0); 1072 } 1073 1074 int 1075 sabtty_param(tp, t) 1076 struct tty *tp; 1077 struct termios *t; 1078 { 1079 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1080 1081 return (sabttyparam(sc, tp, t)); 1082 } 1083 1084 void 1085 sabtty_start(tp) 1086 struct tty *tp; 1087 { 1088 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1089 int s; 1090 1091 s = spltty(); 1092 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1093 if (tp->t_outq.c_cc <= tp->t_lowat) { 1094 if (tp->t_state & TS_ASLEEP) { 1095 tp->t_state &= ~TS_ASLEEP; 1096 wakeup(&tp->t_outq); 1097 } 1098 selwakeup(&tp->t_wsel); 1099 } 1100 if (tp->t_outq.c_cc) { 1101 sc->sc_txc = ndqb(&tp->t_outq, 0); 1102 sc->sc_txp = tp->t_outq.c_cf; 1103 tp->t_state |= TS_BUSY; 1104 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1105 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1106 } 1107 } 1108 splx(s); 1109 } 1110 1111 void 1112 sabtty_cec_wait(sc) 1113 struct sabtty_softc *sc; 1114 { 1115 int i = 50000; 1116 1117 for (;;) { 1118 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1119 return; 1120 if (--i == 0) 1121 break; 1122 DELAY(1); 1123 } 1124 } 1125 1126 void 1127 sabtty_tec_wait(sc) 1128 struct sabtty_softc *sc; 1129 { 1130 int i = 200000; 1131 1132 for (;;) { 1133 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1134 return; 1135 if (--i == 0) 1136 break; 1137 DELAY(1); 1138 } 1139 } 1140 1141 void 1142 sabtty_reset(sc) 1143 struct sabtty_softc *sc; 1144 { 1145 /* power down */ 1146 SAB_WRITE(sc, SAB_CCR0, 0); 1147 1148 /* set basic configuration */ 1149 SAB_WRITE(sc, SAB_CCR0, 1150 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1151 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1152 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1153 SAB_WRITE(sc, SAB_CCR3, 0); 1154 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1155 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1156 SAB_WRITE(sc, SAB_RFC, 1157 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1158 1159 /* clear interrupts */ 1160 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1161 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1162 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1163 SAB_READ(sc, SAB_ISR0); 1164 SAB_READ(sc, SAB_ISR1); 1165 } 1166 1167 void 1168 sabtty_flush(sc) 1169 struct sabtty_softc *sc; 1170 { 1171 /* clear rx fifo */ 1172 sabtty_cec_wait(sc); 1173 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1174 1175 /* clear tx fifo */ 1176 sabtty_cec_wait(sc); 1177 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1178 } 1179 1180 int 1181 sabtty_speed(rate) 1182 int rate; 1183 { 1184 int i, len, r; 1185 1186 if (rate == 0) 1187 return (0); 1188 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1189 for (i = 0; i < len; i++) { 1190 if (rate == sabtty_baudtable[i].baud) { 1191 r = sabtty_baudtable[i].n | 1192 (sabtty_baudtable[i].m << 6); 1193 return (r); 1194 } 1195 } 1196 return (-1); 1197 } 1198 1199 void 1200 sabtty_cnputc(sc, c) 1201 struct sabtty_softc *sc; 1202 int c; 1203 { 1204 sabtty_tec_wait(sc); 1205 SAB_WRITE(sc, SAB_TIC, c); 1206 sabtty_tec_wait(sc); 1207 } 1208 1209 int 1210 sabtty_cngetc(sc) 1211 struct sabtty_softc *sc; 1212 { 1213 u_int8_t r, len; 1214 1215 again: 1216 do { 1217 r = SAB_READ(sc, SAB_STAR); 1218 } while ((r & SAB_STAR_RFNE) == 0); 1219 1220 /* 1221 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1222 * (I hate this chip... hate hate hate). 1223 */ 1224 sabtty_cec_wait(sc); 1225 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1226 1227 /* Wait for RFIFO to come ready */ 1228 do { 1229 r = SAB_READ(sc, SAB_ISR0); 1230 } while ((r & SAB_ISR0_TCD) == 0); 1231 1232 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1233 if (len == 0) 1234 goto again; /* Shouldn't happen... */ 1235 1236 r = SAB_READ(sc, SAB_RFIFO); 1237 1238 /* 1239 * Blow away everything left in the FIFO... 1240 */ 1241 sabtty_cec_wait(sc); 1242 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1243 return (r); 1244 } 1245 1246 void 1247 sabtty_cnpollc(sc, on) 1248 struct sabtty_softc *sc; 1249 int on; 1250 { 1251 u_int8_t r; 1252 1253 if (on) { 1254 if (sc->sc_polling) 1255 return; 1256 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1257 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1258 r &= ~(SAB_RFC_RFDF); 1259 SAB_WRITE(sc, SAB_RFC, r); 1260 sabtty_cec_wait(sc); 1261 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1262 sc->sc_polling = 1; 1263 } else { 1264 if (!sc->sc_polling) 1265 return; 1266 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1267 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1268 sabtty_cec_wait(sc); 1269 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1270 sc->sc_polling = 0; 1271 } 1272 } 1273 1274 void 1275 sab_cnputc(dev, c) 1276 dev_t dev; 1277 int c; 1278 { 1279 struct sabtty_softc *sc = sabtty_cons_output; 1280 1281 if (sc == NULL) 1282 return; 1283 sabtty_cnputc(sc, c); 1284 } 1285 1286 void 1287 sab_cnpollc(dev, on) 1288 dev_t dev; 1289 int on; 1290 { 1291 struct sabtty_softc *sc = sabtty_cons_input; 1292 1293 sabtty_cnpollc(sc, on); 1294 } 1295 1296 int 1297 sab_cngetc(dev) 1298 dev_t dev; 1299 { 1300 struct sabtty_softc *sc = sabtty_cons_input; 1301 1302 if (sc == NULL) 1303 return (-1); 1304 return (sabtty_cngetc(sc)); 1305 } 1306 1307 void 1308 sabtty_console_flags(sc) 1309 struct sabtty_softc *sc; 1310 { 1311 int node, channel, cookie; 1312 char buf[255]; 1313 1314 node = sc->sc_parent->sc_node; 1315 channel = sc->sc_portno; 1316 1317 /* Default to channel 0 if there are no explicit prom args */ 1318 cookie = 0; 1319 1320 if (node == prom_instance_to_package(prom_stdin())) { 1321 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1322 strcmp("ttyb", buf) == 0) 1323 cookie = 1; 1324 1325 if (channel == cookie) 1326 sc->sc_flags |= SABTTYF_CONS_IN; 1327 } 1328 1329 /* Default to same channel if there are no explicit prom args */ 1330 1331 if (node == prom_instance_to_package(prom_stdout())) { 1332 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1333 strcmp("ttyb", buf) == 0) 1334 cookie = 1; 1335 1336 if (channel == cookie) 1337 sc->sc_flags |= SABTTYF_CONS_OUT; 1338 } 1339 } 1340 1341 void 1342 sabtty_shutdown(vsc) 1343 void *vsc; 1344 { 1345 struct sabtty_softc *sc = vsc; 1346 1347 /* Have to put the chip back into single char mode */ 1348 sc->sc_flags |= SABTTYF_DONTDDB; 1349 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1350 sabtty_cec_wait(sc); 1351 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1352 sabtty_cec_wait(sc); 1353 } 1354
Indexes created Thu Sep 25 02:09:54 GMT 2025