sab.c revision 1.18
1 /* $NetBSD: sab.c,v 1.18 2004/07/17 21:23:10 heas 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 1.18 2004/07/17 21:23:10 heas 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 aprint_normal(": rev "); 268 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 269 switch (r) { 270 case SAB_VSTR_V_1: 271 aprint_normal("1"); 272 break; 273 case SAB_VSTR_V_2: 274 aprint_normal("2"); 275 break; 276 case SAB_VSTR_V_32: 277 aprint_normal("3.2"); 278 break; 279 default: 280 aprint_normal("unknown(0x%x)", r); 281 break; 282 } 283 aprint_normal("\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 %u", 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 aprint_normal(": 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 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 410 return; 411 } 412 if (r != 0) { 413 aprint_normal(": 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_tec_wait(sc); 455 sabtty_cons_output = sc; 456 cn_tab->cn_putc = sab_cnputc; 457 maj = cdevsw_lookup_major(&sabtty_cdevsw); 458 cn_tab->cn_dev = makedev(maj, self->dv_unit); 459 } 460 aprint_normal(": console %s", acc); 461 } else { 462 /* Not a console... */ 463 sabtty_reset(sc); 464 } 465 466 aprint_normal("\n"); 467 } 468 469 int 470 sabtty_intr(sc, needsoftp) 471 struct sabtty_softc *sc; 472 int *needsoftp; 473 { 474 u_int8_t isr0, isr1; 475 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 476 477 isr0 = SAB_READ(sc, SAB_ISR0); 478 isr1 = SAB_READ(sc, SAB_ISR1); 479 480 if (isr0 || isr1) 481 r = 1; 482 483 if (isr0 & SAB_ISR0_RPF) { 484 len = 32; 485 clearfifo = 1; 486 } 487 if (isr0 & SAB_ISR0_TCD) { 488 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 489 clearfifo = 1; 490 } 491 if (isr0 & SAB_ISR0_TIME) { 492 sabtty_cec_wait(sc); 493 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 494 } 495 if (isr0 & SAB_ISR0_RFO) { 496 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 497 clearfifo = 1; 498 } 499 if (len != 0) { 500 u_int8_t *ptr, b; 501 502 ptr = sc->sc_rput; 503 for (i = 0; i < len; i++) { 504 b = SAB_READ(sc, SAB_RFIFO); 505 if (i % 2 == 0) /* skip status byte */ 506 cn_check_magic(sc->sc_tty->t_dev, 507 b, sabtty_cnm_state); 508 *ptr++ = b; 509 if (ptr == sc->sc_rend) 510 ptr = sc->sc_rbuf; 511 if (ptr == sc->sc_rget) { 512 if (ptr == sc->sc_rbuf) 513 ptr = sc->sc_rend; 514 ptr--; 515 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 516 } 517 } 518 sc->sc_rput = ptr; 519 needsoft = 1; 520 } 521 522 if (clearfifo) { 523 sabtty_cec_wait(sc); 524 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 525 } 526 527 if (isr0 & SAB_ISR0_CDSC) { 528 sc->sc_flags |= SABTTYF_CDCHG; 529 needsoft = 1; 530 } 531 532 if (isr1 & SAB_ISR1_BRKT) 533 cn_check_magic(sc->sc_tty->t_dev, 534 CNC_BREAK, sabtty_cnm_state); 535 536 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 537 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 538 (sc->sc_flags & SABTTYF_STOP) == 0) { 539 if (sc->sc_txc < 32) 540 len = sc->sc_txc; 541 else 542 len = 32; 543 544 if (len > 0) { 545 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 546 sc->sc_txp += len; 547 sc->sc_txc -= len; 548 549 sabtty_cec_wait(sc); 550 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 551 552 /* 553 * Prevent the false end of xmit from 554 * confusing things below. 555 */ 556 isr1 &= ~SAB_ISR1_ALLS; 557 } 558 } 559 560 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 561 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 562 sc->sc_imr1 |= SAB_IMR1_XPR; 563 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 564 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 565 } 566 } 567 } 568 569 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 570 (sc->sc_flags & SABTTYF_STOP))) { 571 if (sc->sc_flags & SABTTYF_TXDRAIN) 572 wakeup(sc); 573 sc->sc_flags &= ~SABTTYF_STOP; 574 sc->sc_flags |= SABTTYF_DONE; 575 sc->sc_imr1 |= SAB_IMR1_ALLS; 576 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 577 needsoft = 1; 578 } 579 580 if (needsoft) 581 *needsoftp = needsoft; 582 return (r); 583 } 584 585 void 586 sabtty_softintr(sc) 587 struct sabtty_softc *sc; 588 { 589 struct tty *tp = sc->sc_tty; 590 int s, flags; 591 u_int8_t r; 592 593 if (tp == NULL) 594 return; 595 596 if ((tp->t_state & TS_ISOPEN) == 0) 597 return; 598 599 while (sc->sc_rget != sc->sc_rput) { 600 int data; 601 u_int8_t stat; 602 603 data = sc->sc_rget[0]; 604 stat = sc->sc_rget[1]; 605 sc->sc_rget += 2; 606 if (stat & SAB_RSTAT_PE) 607 data |= TTY_PE; 608 if (stat & SAB_RSTAT_FE) 609 data |= TTY_FE; 610 if (sc->sc_rget == sc->sc_rend) 611 sc->sc_rget = sc->sc_rbuf; 612 613 (*tp->t_linesw->l_rint)(data, tp); 614 } 615 616 s = splhigh(); 617 flags = sc->sc_flags; 618 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 619 splx(s); 620 621 if (flags & SABTTYF_CDCHG) { 622 s = spltty(); 623 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 624 splx(s); 625 626 (*tp->t_linesw->l_modem)(tp, r); 627 } 628 629 if (flags & SABTTYF_RINGOVERFLOW) 630 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 631 632 if (flags & SABTTYF_DONE) { 633 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 634 tp->t_state &= ~TS_BUSY; 635 (*tp->t_linesw->l_start)(tp); 636 } 637 } 638 639 int 640 sabopen(dev, flags, mode, p) 641 dev_t dev; 642 int flags, mode; 643 struct proc *p; 644 { 645 struct sabtty_softc *sc; 646 struct tty *tp; 647 int s, s1; 648 649 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 650 if (sc == NULL) 651 return (ENXIO); 652 653 tp = sc->sc_tty; 654 tp->t_dev = dev; 655 656 if ((tp->t_state & TS_ISOPEN) == 0) { 657 ttychars(tp); 658 tp->t_iflag = TTYDEF_IFLAG; 659 tp->t_oflag = TTYDEF_OFLAG; 660 tp->t_cflag = TTYDEF_CFLAG; 661 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 662 tp->t_cflag |= CLOCAL; 663 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 664 tp->t_cflag |= CRTSCTS; 665 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 666 tp->t_cflag |= MDMBUF; 667 tp->t_lflag = TTYDEF_LFLAG; 668 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 669 670 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 671 672 s = spltty(); 673 674 ttsetwater(tp); 675 676 s1 = splhigh(); 677 sabtty_reset(sc); 678 sabtty_param(tp, &tp->t_termios); 679 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 680 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 681 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 682 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 683 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 684 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 685 sabtty_cec_wait(sc); 686 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 687 sabtty_cec_wait(sc); 688 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 689 sabtty_cec_wait(sc); 690 splx(s1); 691 692 sabtty_flush(sc); 693 694 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 695 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 696 tp->t_state |= TS_CARR_ON; 697 else 698 tp->t_state &= ~TS_CARR_ON; 699 } else if ((tp->t_state & TS_XCLUDE) && 700 (!suser(p->p_ucred, &p->p_acflag))) { 701 return (EBUSY); 702 } else { 703 s = spltty(); 704 } 705 706 if ((flags & O_NONBLOCK) == 0) { 707 while ((tp->t_cflag & CLOCAL) == 0 && 708 (tp->t_state & TS_CARR_ON) == 0) { 709 int error; 710 711 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 712 "sabttycd", 0); 713 if (error != 0) { 714 splx(s); 715 return (error); 716 } 717 } 718 } 719 720 splx(s); 721 722 s = (*tp->t_linesw->l_open)(dev, tp); 723 if (s != 0) { 724 if (tp->t_state & TS_ISOPEN) 725 return (s); 726 727 if (tp->t_cflag & HUPCL) { 728 sabtty_mdmctrl(sc, 0, DMSET); 729 (void)tsleep(sc, TTIPRI, ttclos, hz); 730 } 731 732 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 733 /* Flush and power down if we're not the console */ 734 sabtty_flush(sc); 735 sabtty_reset(sc); 736 } 737 } 738 return (s); 739 } 740 741 int 742 sabclose(dev, flags, mode, p) 743 dev_t dev; 744 int flags, mode; 745 struct proc *p; 746 { 747 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 748 struct sab_softc *bc = sc->sc_parent; 749 struct tty *tp = sc->sc_tty; 750 int s; 751 752 (*tp->t_linesw->l_close)(tp, flags); 753 754 s = spltty(); 755 756 if ((tp->t_state & TS_ISOPEN) == 0) { 757 /* Wait for output drain */ 758 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 759 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 760 sc->sc_flags |= SABTTYF_TXDRAIN; 761 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 762 sc->sc_imr1 |= SAB_IMR1_ALLS; 763 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 764 sc->sc_flags &= ~SABTTYF_TXDRAIN; 765 766 if (tp->t_cflag & HUPCL) { 767 sabtty_mdmctrl(sc, 0, DMSET); 768 (void)tsleep(bc, TTIPRI, ttclos, hz); 769 } 770 771 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 772 /* Flush and power down if we're not the console */ 773 sabtty_flush(sc); 774 sabtty_reset(sc); 775 } 776 } 777 778 ttyclose(tp); 779 splx(s); 780 781 return (0); 782 } 783 784 int 785 sabread(dev, uio, flags) 786 dev_t dev; 787 struct uio *uio; 788 int flags; 789 { 790 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 791 struct tty *tp = sc->sc_tty; 792 793 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 794 } 795 796 int 797 sabwrite(dev, uio, flags) 798 dev_t dev; 799 struct uio *uio; 800 int flags; 801 { 802 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 803 struct tty *tp = sc->sc_tty; 804 805 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 806 } 807 808 int 809 sabioctl(dev, cmd, data, flags, p) 810 dev_t dev; 811 u_long cmd; 812 caddr_t data; 813 int flags; 814 struct proc *p; 815 { 816 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 817 struct tty *tp = sc->sc_tty; 818 int error; 819 820 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 821 if (error >= 0) 822 return (error); 823 824 error = ttioctl(tp, cmd, data, flags, p); 825 if (error >= 0) 826 return (error); 827 828 error = 0; 829 830 switch (cmd) { 831 case TIOCSBRK: 832 SAB_WRITE(sc, SAB_DAFO, 833 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 834 break; 835 case TIOCCBRK: 836 SAB_WRITE(sc, SAB_DAFO, 837 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 838 break; 839 case TIOCSDTR: 840 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 841 break; 842 case TIOCCDTR: 843 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 844 break; 845 case TIOCMBIS: 846 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 847 break; 848 case TIOCMBIC: 849 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 850 break; 851 case TIOCMGET: 852 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 853 break; 854 case TIOCMSET: 855 sabtty_mdmctrl(sc, *((int *)data), DMSET); 856 break; 857 case TIOCGFLAGS: 858 *((int *)data) = sc->sc_openflags; 859 break; 860 case TIOCSFLAGS: 861 if (suser(p->p_ucred, &p->p_acflag)) 862 error = EPERM; 863 else 864 sc->sc_openflags = *((int *)data) & 865 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 866 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 867 break; 868 default: 869 error = ENOTTY; 870 } 871 872 return (error); 873 } 874 875 struct tty * 876 sabtty(dev) 877 dev_t dev; 878 { 879 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 880 881 return (sc->sc_tty); 882 } 883 884 void 885 sabstop(tp, flag) 886 struct tty *tp; 887 int flag; 888 { 889 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 890 int s; 891 892 s = spltty(); 893 if (tp->t_state & TS_BUSY) { 894 if ((tp->t_state & TS_TTSTOP) == 0) 895 tp->t_state |= TS_FLUSH; 896 sc->sc_flags |= SABTTYF_STOP; 897 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 898 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 899 } 900 splx(s); 901 } 902 903 int 904 sabpoll(dev, events, p) 905 dev_t dev; 906 int events; 907 struct proc *p; 908 { 909 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 910 struct tty *tp = sc->sc_tty; 911 912 return ((*tp->t_linesw->l_poll)(tp, events, p)); 913 } 914 915 int 916 sabtty_mdmctrl(sc, bits, how) 917 struct sabtty_softc *sc; 918 int bits, how; 919 { 920 u_int8_t r; 921 int s; 922 923 s = spltty(); 924 switch (how) { 925 case DMGET: 926 bits = 0; 927 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 928 bits |= TIOCM_CTS; 929 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 930 bits |= TIOCM_CD; 931 932 r = SAB_READ(sc, SAB_PVR); 933 if ((r & sc->sc_pvr_dtr) == 0) 934 bits |= TIOCM_DTR; 935 if ((r & sc->sc_pvr_dsr) == 0) 936 bits |= TIOCM_DSR; 937 938 r = SAB_READ(sc, SAB_MODE); 939 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 940 bits |= TIOCM_RTS; 941 break; 942 case DMSET: 943 r = SAB_READ(sc, SAB_MODE); 944 if (bits & TIOCM_RTS) { 945 r &= ~SAB_MODE_FRTS; 946 r |= SAB_MODE_RTS; 947 } else 948 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 949 SAB_WRITE(sc, SAB_MODE, r); 950 951 r = SAB_READ(sc, SAB_PVR); 952 if (bits & TIOCM_DTR) 953 r &= ~sc->sc_pvr_dtr; 954 else 955 r |= sc->sc_pvr_dtr; 956 SAB_WRITE(sc, SAB_PVR, r); 957 break; 958 case DMBIS: 959 if (bits & TIOCM_RTS) { 960 r = SAB_READ(sc, SAB_MODE); 961 r &= ~SAB_MODE_FRTS; 962 r |= SAB_MODE_RTS; 963 SAB_WRITE(sc, SAB_MODE, r); 964 } 965 if (bits & TIOCM_DTR) { 966 r = SAB_READ(sc, SAB_PVR); 967 r &= ~sc->sc_pvr_dtr; 968 SAB_WRITE(sc, SAB_PVR, r); 969 } 970 break; 971 case DMBIC: 972 if (bits & TIOCM_RTS) { 973 r = SAB_READ(sc, SAB_MODE); 974 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 975 SAB_WRITE(sc, SAB_MODE, r); 976 } 977 if (bits & TIOCM_DTR) { 978 r = SAB_READ(sc, SAB_PVR); 979 r |= sc->sc_pvr_dtr; 980 SAB_WRITE(sc, SAB_PVR, r); 981 } 982 break; 983 } 984 splx(s); 985 return (bits); 986 } 987 988 int 989 sabttyparam(sc, tp, t) 990 struct sabtty_softc *sc; 991 struct tty *tp; 992 struct termios *t; 993 { 994 int s, ospeed; 995 tcflag_t cflag; 996 u_int8_t dafo, r; 997 998 ospeed = sabtty_speed(t->c_ospeed); 999 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1000 return (EINVAL); 1001 1002 s = spltty(); 1003 1004 /* hang up line if ospeed is zero, otherwise raise dtr */ 1005 sabtty_mdmctrl(sc, TIOCM_DTR, 1006 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1007 1008 dafo = SAB_READ(sc, SAB_DAFO); 1009 1010 cflag = t->c_cflag; 1011 1012 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1013 cflag |= CLOCAL; 1014 cflag &= ~HUPCL; 1015 } 1016 1017 if (cflag & CSTOPB) 1018 dafo |= SAB_DAFO_STOP; 1019 else 1020 dafo &= ~SAB_DAFO_STOP; 1021 1022 dafo &= ~SAB_DAFO_CHL_CSIZE; 1023 switch (cflag & CSIZE) { 1024 case CS5: 1025 dafo |= SAB_DAFO_CHL_CS5; 1026 break; 1027 case CS6: 1028 dafo |= SAB_DAFO_CHL_CS6; 1029 break; 1030 case CS7: 1031 dafo |= SAB_DAFO_CHL_CS7; 1032 break; 1033 default: 1034 dafo |= SAB_DAFO_CHL_CS8; 1035 break; 1036 } 1037 1038 dafo &= ~SAB_DAFO_PARMASK; 1039 if (cflag & PARENB) { 1040 if (cflag & PARODD) 1041 dafo |= SAB_DAFO_PAR_ODD; 1042 else 1043 dafo |= SAB_DAFO_PAR_EVEN; 1044 } else 1045 dafo |= SAB_DAFO_PAR_NONE; 1046 1047 if (ospeed != 0) { 1048 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1049 r = SAB_READ(sc, SAB_CCR2); 1050 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1051 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1052 SAB_WRITE(sc, SAB_CCR2, r); 1053 } 1054 1055 r = SAB_READ(sc, SAB_MODE); 1056 r |= SAB_MODE_RAC; 1057 if (cflag & CRTSCTS) { 1058 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1059 r |= SAB_MODE_FRTS; 1060 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1061 } else { 1062 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1063 r &= ~SAB_MODE_FRTS; 1064 sc->sc_imr1 |= SAB_IMR1_CSC; 1065 } 1066 SAB_WRITE(sc, SAB_MODE, r); 1067 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1068 1069 tp->t_cflag = cflag; 1070 1071 splx(s); 1072 return (0); 1073 } 1074 1075 int 1076 sabtty_param(tp, t) 1077 struct tty *tp; 1078 struct termios *t; 1079 { 1080 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1081 1082 return (sabttyparam(sc, tp, t)); 1083 } 1084 1085 void 1086 sabtty_start(tp) 1087 struct tty *tp; 1088 { 1089 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1090 int s; 1091 1092 s = spltty(); 1093 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1094 if (tp->t_outq.c_cc <= tp->t_lowat) { 1095 if (tp->t_state & TS_ASLEEP) { 1096 tp->t_state &= ~TS_ASLEEP; 1097 wakeup(&tp->t_outq); 1098 } 1099 selwakeup(&tp->t_wsel); 1100 } 1101 if (tp->t_outq.c_cc) { 1102 sc->sc_txc = ndqb(&tp->t_outq, 0); 1103 sc->sc_txp = tp->t_outq.c_cf; 1104 tp->t_state |= TS_BUSY; 1105 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1106 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1107 } 1108 } 1109 splx(s); 1110 } 1111 1112 void 1113 sabtty_cec_wait(sc) 1114 struct sabtty_softc *sc; 1115 { 1116 int i = 50000; 1117 1118 for (;;) { 1119 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1120 return; 1121 if (--i == 0) 1122 break; 1123 DELAY(1); 1124 } 1125 } 1126 1127 void 1128 sabtty_tec_wait(sc) 1129 struct sabtty_softc *sc; 1130 { 1131 int i = 200000; 1132 1133 for (;;) { 1134 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1135 return; 1136 if (--i == 0) 1137 break; 1138 DELAY(1); 1139 } 1140 } 1141 1142 void 1143 sabtty_reset(sc) 1144 struct sabtty_softc *sc; 1145 { 1146 /* power down */ 1147 SAB_WRITE(sc, SAB_CCR0, 0); 1148 1149 /* set basic configuration */ 1150 SAB_WRITE(sc, SAB_CCR0, 1151 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1152 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1153 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1154 SAB_WRITE(sc, SAB_CCR3, 0); 1155 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1156 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1157 SAB_WRITE(sc, SAB_RFC, 1158 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1159 1160 /* clear interrupts */ 1161 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1162 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1163 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1164 SAB_READ(sc, SAB_ISR0); 1165 SAB_READ(sc, SAB_ISR1); 1166 } 1167 1168 void 1169 sabtty_flush(sc) 1170 struct sabtty_softc *sc; 1171 { 1172 /* clear rx fifo */ 1173 sabtty_cec_wait(sc); 1174 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1175 1176 /* clear tx fifo */ 1177 sabtty_cec_wait(sc); 1178 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1179 } 1180 1181 int 1182 sabtty_speed(rate) 1183 int rate; 1184 { 1185 int i, len, r; 1186 1187 if (rate == 0) 1188 return (0); 1189 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1190 for (i = 0; i < len; i++) { 1191 if (rate == sabtty_baudtable[i].baud) { 1192 r = sabtty_baudtable[i].n | 1193 (sabtty_baudtable[i].m << 6); 1194 return (r); 1195 } 1196 } 1197 return (-1); 1198 } 1199 1200 void 1201 sabtty_cnputc(sc, c) 1202 struct sabtty_softc *sc; 1203 int c; 1204 { 1205 sabtty_tec_wait(sc); 1206 SAB_WRITE(sc, SAB_TIC, c); 1207 sabtty_tec_wait(sc); 1208 } 1209 1210 int 1211 sabtty_cngetc(sc) 1212 struct sabtty_softc *sc; 1213 { 1214 u_int8_t r, len; 1215 1216 again: 1217 do { 1218 r = SAB_READ(sc, SAB_STAR); 1219 } while ((r & SAB_STAR_RFNE) == 0); 1220 1221 /* 1222 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1223 * (I hate this chip... hate hate hate). 1224 */ 1225 sabtty_cec_wait(sc); 1226 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1227 1228 /* Wait for RFIFO to come ready */ 1229 do { 1230 r = SAB_READ(sc, SAB_ISR0); 1231 } while ((r & SAB_ISR0_TCD) == 0); 1232 1233 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1234 if (len == 0) 1235 goto again; /* Shouldn't happen... */ 1236 1237 r = SAB_READ(sc, SAB_RFIFO); 1238 1239 /* 1240 * Blow away everything left in the FIFO... 1241 */ 1242 sabtty_cec_wait(sc); 1243 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1244 return (r); 1245 } 1246 1247 void 1248 sabtty_cnpollc(sc, on) 1249 struct sabtty_softc *sc; 1250 int on; 1251 { 1252 u_int8_t r; 1253 1254 if (on) { 1255 if (sc->sc_polling) 1256 return; 1257 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1258 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1259 r &= ~(SAB_RFC_RFDF); 1260 SAB_WRITE(sc, SAB_RFC, r); 1261 sabtty_cec_wait(sc); 1262 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1263 sc->sc_polling = 1; 1264 } else { 1265 if (!sc->sc_polling) 1266 return; 1267 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1268 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1269 sabtty_cec_wait(sc); 1270 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1271 sc->sc_polling = 0; 1272 } 1273 } 1274 1275 void 1276 sab_cnputc(dev, c) 1277 dev_t dev; 1278 int c; 1279 { 1280 struct sabtty_softc *sc = sabtty_cons_output; 1281 1282 if (sc == NULL) 1283 return; 1284 sabtty_cnputc(sc, c); 1285 } 1286 1287 void 1288 sab_cnpollc(dev, on) 1289 dev_t dev; 1290 int on; 1291 { 1292 struct sabtty_softc *sc = sabtty_cons_input; 1293 1294 sabtty_cnpollc(sc, on); 1295 } 1296 1297 int 1298 sab_cngetc(dev) 1299 dev_t dev; 1300 { 1301 struct sabtty_softc *sc = sabtty_cons_input; 1302 1303 if (sc == NULL) 1304 return (-1); 1305 return (sabtty_cngetc(sc)); 1306 } 1307 1308 void 1309 sabtty_console_flags(sc) 1310 struct sabtty_softc *sc; 1311 { 1312 int node, channel, cookie; 1313 char buf[255]; 1314 1315 node = sc->sc_parent->sc_node; 1316 channel = sc->sc_portno; 1317 1318 /* Default to channel 0 if there are no explicit prom args */ 1319 cookie = 0; 1320 1321 if (node == prom_instance_to_package(prom_stdin())) { 1322 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1323 strcmp("ttyb", buf) == 0) 1324 cookie = 1; 1325 1326 if (channel == cookie) 1327 sc->sc_flags |= SABTTYF_CONS_IN; 1328 } 1329 1330 /* Default to same channel if there are no explicit prom args */ 1331 1332 if (node == prom_instance_to_package(prom_stdout())) { 1333 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1334 strcmp("ttyb", buf) == 0) 1335 cookie = 1; 1336 1337 if (channel == cookie) 1338 sc->sc_flags |= SABTTYF_CONS_OUT; 1339 } 1340 } 1341 1342 void 1343 sabtty_shutdown(vsc) 1344 void *vsc; 1345 { 1346 struct sabtty_softc *sc = vsc; 1347 1348 /* Have to put the chip back into single char mode */ 1349 sc->sc_flags |= SABTTYF_DONTDDB; 1350 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1351 sabtty_cec_wait(sc); 1352 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1353 sabtty_cec_wait(sc); 1354 } 1355
Indexes created Thu Sep 25 16:09:42 GMT 2025