sab.c revision 1.24
1 /* $NetBSD: sab.c,v 1.24 2005/12/11 12:19:09 christos 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 1.24 2005/12/11 12:19:09 christos 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 #include "locators.h" 69 70 #define SABUNIT(x) (minor(x) & 0x7ffff) 71 #define SABDIALOUT(x) (minor(x) & 0x80000) 72 73 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 74 75 struct sab_softc { 76 struct device sc_dv; 77 struct intrhand * sc_ih; 78 bus_space_tag_t sc_bt; 79 bus_space_handle_t sc_bh; 80 struct sabtty_softc * sc_child[SAB_NCHAN]; 81 u_int sc_nchild; 82 void * sc_softintr; 83 int sc_node; 84 }; 85 86 struct sabtty_attach_args { 87 u_int sbt_portno; 88 }; 89 90 struct sabtty_softc { 91 struct device sc_dv; 92 struct sab_softc * sc_parent; 93 bus_space_tag_t sc_bt; 94 bus_space_handle_t sc_bh; 95 struct tty * sc_tty; 96 u_int sc_portno; 97 u_int8_t sc_pvr_dtr, sc_pvr_dsr; 98 u_int8_t sc_imr0, sc_imr1; 99 int sc_openflags; 100 u_char * sc_txp; 101 int sc_txc; 102 int sc_flags; 103 #define SABTTYF_STOP 0x01 104 #define SABTTYF_DONE 0x02 105 #define SABTTYF_RINGOVERFLOW 0x04 106 #define SABTTYF_CDCHG 0x08 107 #define SABTTYF_CONS_IN 0x10 108 #define SABTTYF_CONS_OUT 0x20 109 #define SABTTYF_TXDRAIN 0x40 110 #define SABTTYF_DONTDDB 0x80 111 u_int8_t sc_rbuf[SABTTY_RBUF_SIZE]; 112 u_int8_t *sc_rend, *sc_rput, *sc_rget; 113 u_int8_t sc_polling, sc_pollrfc; 114 }; 115 116 struct sabtty_softc *sabtty_cons_input; 117 struct sabtty_softc *sabtty_cons_output; 118 119 #define SAB_READ(sc,r) \ 120 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 121 #define SAB_WRITE(sc,r,v) \ 122 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 123 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 124 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 125 126 int sab_match(struct device *, struct cfdata *, void *); 127 void sab_attach(struct device *, struct device *, void *); 128 int sab_print(void *, const char *); 129 int sab_intr(void *); 130 131 void sab_softintr(void *); 132 void sab_cnputc(dev_t, int); 133 int sab_cngetc(dev_t); 134 void sab_cnpollc(dev_t, int); 135 136 int sabtty_match(struct device *, struct cfdata *, void *); 137 void sabtty_attach(struct device *, struct device *, void *); 138 void sabtty_start(struct tty *); 139 int sabtty_param(struct tty *, struct termios *); 140 int sabtty_intr(struct sabtty_softc *, int *); 141 void sabtty_softintr(struct sabtty_softc *); 142 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 143 void sabtty_cec_wait(struct sabtty_softc *); 144 void sabtty_tec_wait(struct sabtty_softc *); 145 void sabtty_reset(struct sabtty_softc *); 146 void sabtty_flush(struct sabtty_softc *); 147 int sabtty_speed(int); 148 void sabtty_console_flags(struct sabtty_softc *); 149 void sabtty_cnpollc(struct sabtty_softc *, int); 150 void sabtty_shutdown(void *); 151 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 152 153 void sabtty_cnputc(struct sabtty_softc *, int); 154 int sabtty_cngetc(struct sabtty_softc *); 155 156 CFATTACH_DECL(sab, sizeof(struct sab_softc), 157 sab_match, sab_attach, NULL, NULL); 158 159 extern struct cfdriver sab_cd; 160 161 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 162 sabtty_match, sabtty_attach, NULL, NULL); 163 164 extern struct cfdriver sabtty_cd; 165 166 dev_type_open(sabopen); 167 dev_type_close(sabclose); 168 dev_type_read(sabread); 169 dev_type_write(sabwrite); 170 dev_type_ioctl(sabioctl); 171 dev_type_stop(sabstop); 172 dev_type_tty(sabtty); 173 dev_type_poll(sabpoll); 174 175 static struct cnm_state sabtty_cnm_state; 176 177 const struct cdevsw sabtty_cdevsw = { 178 sabopen, sabclose, sabread, sabwrite, sabioctl, 179 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 180 }; 181 182 struct sabtty_rate { 183 int baud; 184 int n, m; 185 }; 186 187 struct sabtty_rate sabtty_baudtable[] = { 188 { 50, 35, 10 }, 189 { 75, 47, 9 }, 190 { 110, 32, 9 }, 191 { 134, 53, 8 }, 192 { 150, 47, 8 }, 193 { 200, 35, 8 }, 194 { 300, 47, 7 }, 195 { 600, 47, 6 }, 196 { 1200, 47, 5 }, 197 { 1800, 31, 5 }, 198 { 2400, 47, 4 }, 199 { 4800, 47, 3 }, 200 { 9600, 47, 2 }, 201 { 19200, 47, 1 }, 202 { 38400, 23, 1 }, 203 { 57600, 15, 1 }, 204 { 115200, 7, 1 }, 205 { 230400, 3, 1 }, 206 { 460800, 1, 1 }, 207 { 76800, 11, 1 }, 208 { 153600, 5, 1 }, 209 { 307200, 3, 1 }, 210 { 614400, 3, 0 }, 211 { 921600, 0, 1 }, 212 }; 213 214 int 215 sab_match(parent, match, aux) 216 struct device *parent; 217 struct cfdata *match; 218 void *aux; 219 { 220 struct ebus_attach_args *ea = aux; 221 char *compat; 222 223 if (strcmp(ea->ea_name, "se") == 0) 224 return (1); 225 226 compat = prom_getpropstring(ea->ea_node, "compatible"); 227 if (compat != NULL && !strcmp(compat, "sab82532")) 228 return (1); 229 230 return (0); 231 } 232 233 void 234 sab_attach(parent, self, aux) 235 struct device *parent; 236 struct device *self; 237 void *aux; 238 { 239 struct sab_softc *sc = (struct sab_softc *)self; 240 struct ebus_attach_args *ea = aux; 241 u_int8_t r; 242 u_int i; 243 int locs[SABCF_NLOCS]; 244 245 sc->sc_bt = ea->ea_bustag; 246 sc->sc_node = ea->ea_node; 247 248 /* Use prom mapping, if available. */ 249 if (ea->ea_nvaddr) 250 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], &sc->sc_bh); 251 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 252 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 253 printf(": can't map register space\n"); 254 return; 255 } 256 257 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 258 IPL_TTY, sab_intr, sc); 259 if (sc->sc_ih == NULL) { 260 printf(": can't map interrupt\n"); 261 return; 262 } 263 264 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 265 if (sc->sc_softintr == NULL) { 266 printf(": can't get soft intr\n"); 267 return; 268 } 269 270 aprint_normal(": rev "); 271 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 272 switch (r) { 273 case SAB_VSTR_V_1: 274 aprint_normal("1"); 275 break; 276 case SAB_VSTR_V_2: 277 aprint_normal("2"); 278 break; 279 case SAB_VSTR_V_32: 280 aprint_normal("3.2"); 281 break; 282 default: 283 aprint_normal("unknown(0x%x)", r); 284 break; 285 } 286 aprint_normal("\n"); 287 288 /* Let current output drain */ 289 DELAY(100000); 290 291 /* Set all pins, except DTR pins to be inputs */ 292 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 293 /* Disable port interrupts */ 294 SAB_WRITE(sc, SAB_PIM, 0xff); 295 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 296 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 297 298 for (i = 0; i < SAB_NCHAN; i++) { 299 struct sabtty_attach_args stax; 300 301 stax.sbt_portno = i; 302 303 locs[SABCF_CHANNEL] = i; 304 305 sc->sc_child[i] = 306 (struct sabtty_softc *)config_found_sm_loc(self, 307 "sab", locs, &stax, sab_print, config_stdsubmatch); 308 if (sc->sc_child[i] != NULL) 309 sc->sc_nchild++; 310 } 311 } 312 313 int 314 sab_print(args, name) 315 void *args; 316 const char *name; 317 { 318 struct sabtty_attach_args *sa = args; 319 320 if (name) 321 aprint_normal("sabtty at %s", name); 322 aprint_normal(" port %u", sa->sbt_portno); 323 return (UNCONF); 324 } 325 326 int 327 sab_intr(vsc) 328 void *vsc; 329 { 330 struct sab_softc *sc = vsc; 331 int r = 0, needsoft = 0; 332 u_int8_t gis; 333 334 gis = SAB_READ(sc, SAB_GIS); 335 336 /* channel A */ 337 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 338 sc->sc_child[0]->sc_tty) 339 r |= sabtty_intr(sc->sc_child[0], &needsoft); 340 341 /* channel B */ 342 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 343 sc->sc_child[1]->sc_tty) 344 r |= sabtty_intr(sc->sc_child[1], &needsoft); 345 346 if (needsoft) 347 softintr_schedule(sc->sc_softintr); 348 349 return (r); 350 } 351 352 void 353 sab_softintr(vsc) 354 void *vsc; 355 { 356 struct sab_softc *sc = vsc; 357 358 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 359 sabtty_softintr(sc->sc_child[0]); 360 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 361 sabtty_softintr(sc->sc_child[1]); 362 } 363 364 int 365 sabtty_match(parent, match, aux) 366 struct device *parent; 367 struct cfdata *match; 368 void *aux; 369 { 370 371 return (1); 372 } 373 374 void 375 sabtty_attach(parent, self, aux) 376 struct device *parent; 377 struct device *self; 378 void *aux; 379 { 380 struct sabtty_softc *sc = (struct sabtty_softc *)self; 381 struct sabtty_attach_args *sa = aux; 382 int r; 383 int maj; 384 385 sc->sc_tty = ttymalloc(); 386 if (sc->sc_tty == NULL) { 387 aprint_normal(": failed to allocate tty\n"); 388 return; 389 } 390 tty_attach(sc->sc_tty); 391 sc->sc_tty->t_oproc = sabtty_start; 392 sc->sc_tty->t_param = sabtty_param; 393 394 sc->sc_parent = (struct sab_softc *)parent; 395 sc->sc_bt = sc->sc_parent->sc_bt; 396 sc->sc_portno = sa->sbt_portno; 397 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 398 399 switch (sa->sbt_portno) { 400 case 0: /* port A */ 401 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 402 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 403 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 404 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 405 break; 406 case 1: /* port B */ 407 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 408 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 409 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 410 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 411 break; 412 default: 413 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 414 return; 415 } 416 if (r != 0) { 417 aprint_normal(": failed to allocate register subregion\n"); 418 return; 419 } 420 421 sabtty_console_flags(sc); 422 423 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 424 struct termios t; 425 const char *acc; 426 427 /* Let residual prom output drain */ 428 DELAY(100000); 429 430 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 431 case SABTTYF_CONS_IN: 432 acc = "input"; 433 break; 434 case SABTTYF_CONS_OUT: 435 acc = "output"; 436 break; 437 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 438 default: 439 acc = "i/o"; 440 break; 441 } 442 443 t.c_ispeed= 0; 444 t.c_ospeed = 9600; 445 t.c_cflag = CREAD | CS8 | HUPCL; 446 sc->sc_tty->t_ospeed = 0; 447 sabttyparam(sc, sc->sc_tty, &t); 448 449 if (sc->sc_flags & SABTTYF_CONS_IN) { 450 sabtty_cons_input = sc; 451 cn_tab->cn_pollc = sab_cnpollc; 452 cn_tab->cn_getc = sab_cngetc; 453 maj = cdevsw_lookup_major(&sabtty_cdevsw); 454 cn_tab->cn_dev = makedev(maj, self->dv_unit); 455 shutdownhook_establish(sabtty_shutdown, sc); 456 cn_init_magic(&sabtty_cnm_state); 457 cn_set_magic("\047\001"); /* default magic is BREAK */ 458 } 459 460 if (sc->sc_flags & SABTTYF_CONS_OUT) { 461 sabtty_tec_wait(sc); 462 sabtty_cons_output = sc; 463 cn_tab->cn_putc = sab_cnputc; 464 maj = cdevsw_lookup_major(&sabtty_cdevsw); 465 cn_tab->cn_dev = makedev(maj, self->dv_unit); 466 } 467 aprint_normal(": console %s", acc); 468 } else { 469 /* Not a console... */ 470 sabtty_reset(sc); 471 } 472 473 aprint_normal("\n"); 474 } 475 476 int 477 sabtty_intr(sc, needsoftp) 478 struct sabtty_softc *sc; 479 int *needsoftp; 480 { 481 u_int8_t isr0, isr1; 482 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 483 484 isr0 = SAB_READ(sc, SAB_ISR0); 485 isr1 = SAB_READ(sc, SAB_ISR1); 486 487 if (isr0 || isr1) 488 r = 1; 489 490 if (isr0 & SAB_ISR0_RPF) { 491 len = 32; 492 clearfifo = 1; 493 } 494 if (isr0 & SAB_ISR0_TCD) { 495 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 496 clearfifo = 1; 497 } 498 if (isr0 & SAB_ISR0_TIME) { 499 sabtty_cec_wait(sc); 500 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 501 } 502 if (isr0 & SAB_ISR0_RFO) { 503 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 504 clearfifo = 1; 505 } 506 if (len != 0) { 507 u_int8_t *ptr, b; 508 509 ptr = sc->sc_rput; 510 for (i = 0; i < len; i++) { 511 b = SAB_READ(sc, SAB_RFIFO); 512 if (i % 2 == 0) /* skip status byte */ 513 cn_check_magic(sc->sc_tty->t_dev, 514 b, sabtty_cnm_state); 515 *ptr++ = b; 516 if (ptr == sc->sc_rend) 517 ptr = sc->sc_rbuf; 518 if (ptr == sc->sc_rget) { 519 if (ptr == sc->sc_rbuf) 520 ptr = sc->sc_rend; 521 ptr--; 522 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 523 } 524 } 525 sc->sc_rput = ptr; 526 needsoft = 1; 527 } 528 529 if (clearfifo) { 530 sabtty_cec_wait(sc); 531 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 532 } 533 534 if (isr0 & SAB_ISR0_CDSC) { 535 sc->sc_flags |= SABTTYF_CDCHG; 536 needsoft = 1; 537 } 538 539 if (isr1 & SAB_ISR1_BRKT) 540 cn_check_magic(sc->sc_tty->t_dev, 541 CNC_BREAK, sabtty_cnm_state); 542 543 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 544 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 545 (sc->sc_flags & SABTTYF_STOP) == 0) { 546 if (sc->sc_txc < 32) 547 len = sc->sc_txc; 548 else 549 len = 32; 550 551 if (len > 0) { 552 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 553 sc->sc_txp += len; 554 sc->sc_txc -= len; 555 556 sabtty_cec_wait(sc); 557 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 558 559 /* 560 * Prevent the false end of xmit from 561 * confusing things below. 562 */ 563 isr1 &= ~SAB_ISR1_ALLS; 564 } 565 } 566 567 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 568 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 569 sc->sc_imr1 |= SAB_IMR1_XPR; 570 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 571 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 572 } 573 } 574 } 575 576 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 577 (sc->sc_flags & SABTTYF_STOP))) { 578 if (sc->sc_flags & SABTTYF_TXDRAIN) 579 wakeup(sc); 580 sc->sc_flags &= ~SABTTYF_STOP; 581 sc->sc_flags |= SABTTYF_DONE; 582 sc->sc_imr1 |= SAB_IMR1_ALLS; 583 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 584 needsoft = 1; 585 } 586 587 if (needsoft) 588 *needsoftp = needsoft; 589 return (r); 590 } 591 592 void 593 sabtty_softintr(sc) 594 struct sabtty_softc *sc; 595 { 596 struct tty *tp = sc->sc_tty; 597 int s, flags; 598 u_int8_t r; 599 600 if (tp == NULL) 601 return; 602 603 if ((tp->t_state & TS_ISOPEN) == 0) 604 return; 605 606 while (sc->sc_rget != sc->sc_rput) { 607 int data; 608 u_int8_t stat; 609 610 data = sc->sc_rget[0]; 611 stat = sc->sc_rget[1]; 612 sc->sc_rget += 2; 613 if (stat & SAB_RSTAT_PE) 614 data |= TTY_PE; 615 if (stat & SAB_RSTAT_FE) 616 data |= TTY_FE; 617 if (sc->sc_rget == sc->sc_rend) 618 sc->sc_rget = sc->sc_rbuf; 619 620 (*tp->t_linesw->l_rint)(data, tp); 621 } 622 623 s = splhigh(); 624 flags = sc->sc_flags; 625 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 626 splx(s); 627 628 if (flags & SABTTYF_CDCHG) { 629 s = spltty(); 630 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 631 splx(s); 632 633 (*tp->t_linesw->l_modem)(tp, r); 634 } 635 636 if (flags & SABTTYF_RINGOVERFLOW) 637 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 638 639 if (flags & SABTTYF_DONE) { 640 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 641 tp->t_state &= ~TS_BUSY; 642 (*tp->t_linesw->l_start)(tp); 643 } 644 } 645 646 int 647 sabopen(dev, flags, mode, l) 648 dev_t dev; 649 int flags, mode; 650 struct lwp *l; 651 { 652 struct sabtty_softc *sc; 653 struct tty *tp; 654 struct proc *p; 655 int s, s1; 656 657 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 658 if (sc == NULL) 659 return (ENXIO); 660 661 tp = sc->sc_tty; 662 tp->t_dev = dev; 663 p = l->l_proc; 664 665 if ((tp->t_state & TS_ISOPEN) == 0) { 666 ttychars(tp); 667 tp->t_iflag = TTYDEF_IFLAG; 668 tp->t_oflag = TTYDEF_OFLAG; 669 tp->t_cflag = TTYDEF_CFLAG; 670 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 671 tp->t_cflag |= CLOCAL; 672 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 673 tp->t_cflag |= CRTSCTS; 674 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 675 tp->t_cflag |= MDMBUF; 676 tp->t_lflag = TTYDEF_LFLAG; 677 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 678 679 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 680 681 s = spltty(); 682 683 ttsetwater(tp); 684 685 s1 = splhigh(); 686 sabtty_reset(sc); 687 sabtty_param(tp, &tp->t_termios); 688 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 689 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 690 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 691 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 692 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 693 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 694 sabtty_cec_wait(sc); 695 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 696 sabtty_cec_wait(sc); 697 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 698 sabtty_cec_wait(sc); 699 splx(s1); 700 701 sabtty_flush(sc); 702 703 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 704 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 705 tp->t_state |= TS_CARR_ON; 706 else 707 tp->t_state &= ~TS_CARR_ON; 708 } else if ((tp->t_state & TS_XCLUDE) && 709 (!suser(p->p_ucred, &p->p_acflag))) { 710 return (EBUSY); 711 } else { 712 s = spltty(); 713 } 714 715 if ((flags & O_NONBLOCK) == 0) { 716 while ((tp->t_cflag & CLOCAL) == 0 && 717 (tp->t_state & TS_CARR_ON) == 0) { 718 int error; 719 720 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 721 "sabttycd", 0); 722 if (error != 0) { 723 splx(s); 724 return (error); 725 } 726 } 727 } 728 729 splx(s); 730 731 s = (*tp->t_linesw->l_open)(dev, tp); 732 if (s != 0) { 733 if (tp->t_state & TS_ISOPEN) 734 return (s); 735 736 if (tp->t_cflag & HUPCL) { 737 sabtty_mdmctrl(sc, 0, DMSET); 738 (void)tsleep(sc, TTIPRI, ttclos, hz); 739 } 740 741 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 742 /* Flush and power down if we're not the console */ 743 sabtty_flush(sc); 744 sabtty_reset(sc); 745 } 746 } 747 return (s); 748 } 749 750 int 751 sabclose(dev, flags, mode, l) 752 dev_t dev; 753 int flags, mode; 754 struct lwp *l; 755 { 756 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 757 struct sab_softc *bc = sc->sc_parent; 758 struct tty *tp = sc->sc_tty; 759 int s; 760 761 (*tp->t_linesw->l_close)(tp, flags); 762 763 s = spltty(); 764 765 if ((tp->t_state & TS_ISOPEN) == 0) { 766 /* Wait for output drain */ 767 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 768 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 769 sc->sc_flags |= SABTTYF_TXDRAIN; 770 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 771 sc->sc_imr1 |= SAB_IMR1_ALLS; 772 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 773 sc->sc_flags &= ~SABTTYF_TXDRAIN; 774 775 if (tp->t_cflag & HUPCL) { 776 sabtty_mdmctrl(sc, 0, DMSET); 777 (void)tsleep(bc, TTIPRI, ttclos, hz); 778 } 779 780 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 781 /* Flush and power down if we're not the console */ 782 sabtty_flush(sc); 783 sabtty_reset(sc); 784 } 785 } 786 787 ttyclose(tp); 788 splx(s); 789 790 return (0); 791 } 792 793 int 794 sabread(dev, uio, flags) 795 dev_t dev; 796 struct uio *uio; 797 int flags; 798 { 799 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 800 struct tty *tp = sc->sc_tty; 801 802 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 803 } 804 805 int 806 sabwrite(dev, uio, flags) 807 dev_t dev; 808 struct uio *uio; 809 int flags; 810 { 811 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 812 struct tty *tp = sc->sc_tty; 813 814 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 815 } 816 817 int 818 sabioctl(dev, cmd, data, flags, l) 819 dev_t dev; 820 u_long cmd; 821 caddr_t data; 822 int flags; 823 struct lwp *l; 824 { 825 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 826 struct tty *tp = sc->sc_tty; 827 struct proc *p = l->l_proc; 828 int error; 829 830 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 831 if (error >= 0) 832 return (error); 833 834 error = ttioctl(tp, cmd, data, flags, l); 835 if (error >= 0) 836 return (error); 837 838 error = 0; 839 840 switch (cmd) { 841 case TIOCSBRK: 842 SAB_WRITE(sc, SAB_DAFO, 843 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 844 break; 845 case TIOCCBRK: 846 SAB_WRITE(sc, SAB_DAFO, 847 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 848 break; 849 case TIOCSDTR: 850 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 851 break; 852 case TIOCCDTR: 853 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 854 break; 855 case TIOCMBIS: 856 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 857 break; 858 case TIOCMBIC: 859 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 860 break; 861 case TIOCMGET: 862 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 863 break; 864 case TIOCMSET: 865 sabtty_mdmctrl(sc, *((int *)data), DMSET); 866 break; 867 case TIOCGFLAGS: 868 *((int *)data) = sc->sc_openflags; 869 break; 870 case TIOCSFLAGS: 871 if (suser(p->p_ucred, &p->p_acflag)) 872 error = EPERM; 873 else 874 sc->sc_openflags = *((int *)data) & 875 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 876 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 877 break; 878 default: 879 error = ENOTTY; 880 } 881 882 return (error); 883 } 884 885 struct tty * 886 sabtty(dev) 887 dev_t dev; 888 { 889 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 890 891 return (sc->sc_tty); 892 } 893 894 void 895 sabstop(tp, flag) 896 struct tty *tp; 897 int flag; 898 { 899 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 900 int s; 901 902 s = spltty(); 903 if (tp->t_state & TS_BUSY) { 904 if ((tp->t_state & TS_TTSTOP) == 0) 905 tp->t_state |= TS_FLUSH; 906 sc->sc_flags |= SABTTYF_STOP; 907 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 908 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 909 } 910 splx(s); 911 } 912 913 int 914 sabpoll(dev, events, l) 915 dev_t dev; 916 int events; 917 struct lwp *l; 918 { 919 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 920 struct tty *tp = sc->sc_tty; 921 922 return ((*tp->t_linesw->l_poll)(tp, events, l)); 923 } 924 925 int 926 sabtty_mdmctrl(sc, bits, how) 927 struct sabtty_softc *sc; 928 int bits, how; 929 { 930 u_int8_t r; 931 int s; 932 933 s = spltty(); 934 switch (how) { 935 case DMGET: 936 bits = 0; 937 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 938 bits |= TIOCM_CTS; 939 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 940 bits |= TIOCM_CD; 941 942 r = SAB_READ(sc, SAB_PVR); 943 if ((r & sc->sc_pvr_dtr) == 0) 944 bits |= TIOCM_DTR; 945 if ((r & sc->sc_pvr_dsr) == 0) 946 bits |= TIOCM_DSR; 947 948 r = SAB_READ(sc, SAB_MODE); 949 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 950 bits |= TIOCM_RTS; 951 break; 952 case DMSET: 953 r = SAB_READ(sc, SAB_MODE); 954 if (bits & TIOCM_RTS) { 955 r &= ~SAB_MODE_FRTS; 956 r |= SAB_MODE_RTS; 957 } else 958 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 959 SAB_WRITE(sc, SAB_MODE, r); 960 961 r = SAB_READ(sc, SAB_PVR); 962 if (bits & TIOCM_DTR) 963 r &= ~sc->sc_pvr_dtr; 964 else 965 r |= sc->sc_pvr_dtr; 966 SAB_WRITE(sc, SAB_PVR, r); 967 break; 968 case DMBIS: 969 if (bits & TIOCM_RTS) { 970 r = SAB_READ(sc, SAB_MODE); 971 r &= ~SAB_MODE_FRTS; 972 r |= SAB_MODE_RTS; 973 SAB_WRITE(sc, SAB_MODE, r); 974 } 975 if (bits & TIOCM_DTR) { 976 r = SAB_READ(sc, SAB_PVR); 977 r &= ~sc->sc_pvr_dtr; 978 SAB_WRITE(sc, SAB_PVR, r); 979 } 980 break; 981 case DMBIC: 982 if (bits & TIOCM_RTS) { 983 r = SAB_READ(sc, SAB_MODE); 984 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 985 SAB_WRITE(sc, SAB_MODE, r); 986 } 987 if (bits & TIOCM_DTR) { 988 r = SAB_READ(sc, SAB_PVR); 989 r |= sc->sc_pvr_dtr; 990 SAB_WRITE(sc, SAB_PVR, r); 991 } 992 break; 993 } 994 splx(s); 995 return (bits); 996 } 997 998 int 999 sabttyparam(sc, tp, t) 1000 struct sabtty_softc *sc; 1001 struct tty *tp; 1002 struct termios *t; 1003 { 1004 int s, ospeed; 1005 tcflag_t cflag; 1006 u_int8_t dafo, r; 1007 1008 ospeed = sabtty_speed(t->c_ospeed); 1009 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1010 return (EINVAL); 1011 1012 s = spltty(); 1013 1014 /* hang up line if ospeed is zero, otherwise raise dtr */ 1015 sabtty_mdmctrl(sc, TIOCM_DTR, 1016 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1017 1018 dafo = SAB_READ(sc, SAB_DAFO); 1019 1020 cflag = t->c_cflag; 1021 1022 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1023 cflag |= CLOCAL; 1024 cflag &= ~HUPCL; 1025 } 1026 1027 if (cflag & CSTOPB) 1028 dafo |= SAB_DAFO_STOP; 1029 else 1030 dafo &= ~SAB_DAFO_STOP; 1031 1032 dafo &= ~SAB_DAFO_CHL_CSIZE; 1033 switch (cflag & CSIZE) { 1034 case CS5: 1035 dafo |= SAB_DAFO_CHL_CS5; 1036 break; 1037 case CS6: 1038 dafo |= SAB_DAFO_CHL_CS6; 1039 break; 1040 case CS7: 1041 dafo |= SAB_DAFO_CHL_CS7; 1042 break; 1043 default: 1044 dafo |= SAB_DAFO_CHL_CS8; 1045 break; 1046 } 1047 1048 dafo &= ~SAB_DAFO_PARMASK; 1049 if (cflag & PARENB) { 1050 if (cflag & PARODD) 1051 dafo |= SAB_DAFO_PAR_ODD; 1052 else 1053 dafo |= SAB_DAFO_PAR_EVEN; 1054 } else 1055 dafo |= SAB_DAFO_PAR_NONE; 1056 1057 if (ospeed != 0) { 1058 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1059 r = SAB_READ(sc, SAB_CCR2); 1060 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1061 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1062 SAB_WRITE(sc, SAB_CCR2, r); 1063 } 1064 1065 r = SAB_READ(sc, SAB_MODE); 1066 r |= SAB_MODE_RAC; 1067 if (cflag & CRTSCTS) { 1068 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1069 r |= SAB_MODE_FRTS; 1070 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1071 } else { 1072 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1073 r &= ~SAB_MODE_FRTS; 1074 sc->sc_imr1 |= SAB_IMR1_CSC; 1075 } 1076 SAB_WRITE(sc, SAB_MODE, r); 1077 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1078 1079 tp->t_cflag = cflag; 1080 1081 splx(s); 1082 return (0); 1083 } 1084 1085 int 1086 sabtty_param(tp, t) 1087 struct tty *tp; 1088 struct termios *t; 1089 { 1090 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1091 1092 return (sabttyparam(sc, tp, t)); 1093 } 1094 1095 void 1096 sabtty_start(tp) 1097 struct tty *tp; 1098 { 1099 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1100 int s; 1101 1102 s = spltty(); 1103 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1104 if (tp->t_outq.c_cc <= tp->t_lowat) { 1105 if (tp->t_state & TS_ASLEEP) { 1106 tp->t_state &= ~TS_ASLEEP; 1107 wakeup(&tp->t_outq); 1108 } 1109 selwakeup(&tp->t_wsel); 1110 } 1111 if (tp->t_outq.c_cc) { 1112 sc->sc_txc = ndqb(&tp->t_outq, 0); 1113 sc->sc_txp = tp->t_outq.c_cf; 1114 tp->t_state |= TS_BUSY; 1115 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1116 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1117 } 1118 } 1119 splx(s); 1120 } 1121 1122 void 1123 sabtty_cec_wait(sc) 1124 struct sabtty_softc *sc; 1125 { 1126 int i = 50000; 1127 1128 for (;;) { 1129 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1130 return; 1131 if (--i == 0) 1132 break; 1133 DELAY(1); 1134 } 1135 } 1136 1137 void 1138 sabtty_tec_wait(sc) 1139 struct sabtty_softc *sc; 1140 { 1141 int i = 200000; 1142 1143 for (;;) { 1144 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1145 return; 1146 if (--i == 0) 1147 break; 1148 DELAY(1); 1149 } 1150 } 1151 1152 void 1153 sabtty_reset(sc) 1154 struct sabtty_softc *sc; 1155 { 1156 /* power down */ 1157 SAB_WRITE(sc, SAB_CCR0, 0); 1158 1159 /* set basic configuration */ 1160 SAB_WRITE(sc, SAB_CCR0, 1161 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1162 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1163 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1164 SAB_WRITE(sc, SAB_CCR3, 0); 1165 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1166 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1167 SAB_WRITE(sc, SAB_RFC, 1168 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1169 1170 /* clear interrupts */ 1171 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1172 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1173 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1174 SAB_READ(sc, SAB_ISR0); 1175 SAB_READ(sc, SAB_ISR1); 1176 } 1177 1178 void 1179 sabtty_flush(sc) 1180 struct sabtty_softc *sc; 1181 { 1182 /* clear rx fifo */ 1183 sabtty_cec_wait(sc); 1184 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1185 1186 /* clear tx fifo */ 1187 sabtty_cec_wait(sc); 1188 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1189 } 1190 1191 int 1192 sabtty_speed(rate) 1193 int rate; 1194 { 1195 int i, len, r; 1196 1197 if (rate == 0) 1198 return (0); 1199 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1200 for (i = 0; i < len; i++) { 1201 if (rate == sabtty_baudtable[i].baud) { 1202 r = sabtty_baudtable[i].n | 1203 (sabtty_baudtable[i].m << 6); 1204 return (r); 1205 } 1206 } 1207 return (-1); 1208 } 1209 1210 void 1211 sabtty_cnputc(sc, c) 1212 struct sabtty_softc *sc; 1213 int c; 1214 { 1215 sabtty_tec_wait(sc); 1216 SAB_WRITE(sc, SAB_TIC, c); 1217 sabtty_tec_wait(sc); 1218 } 1219 1220 int 1221 sabtty_cngetc(sc) 1222 struct sabtty_softc *sc; 1223 { 1224 u_int8_t r, len; 1225 1226 again: 1227 do { 1228 r = SAB_READ(sc, SAB_STAR); 1229 } while ((r & SAB_STAR_RFNE) == 0); 1230 1231 /* 1232 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1233 * (I hate this chip... hate hate hate). 1234 */ 1235 sabtty_cec_wait(sc); 1236 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1237 1238 /* Wait for RFIFO to come ready */ 1239 do { 1240 r = SAB_READ(sc, SAB_ISR0); 1241 } while ((r & SAB_ISR0_TCD) == 0); 1242 1243 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1244 if (len == 0) 1245 goto again; /* Shouldn't happen... */ 1246 1247 r = SAB_READ(sc, SAB_RFIFO); 1248 1249 /* 1250 * Blow away everything left in the FIFO... 1251 */ 1252 sabtty_cec_wait(sc); 1253 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1254 return (r); 1255 } 1256 1257 void 1258 sabtty_cnpollc(sc, on) 1259 struct sabtty_softc *sc; 1260 int on; 1261 { 1262 u_int8_t r; 1263 1264 if (on) { 1265 if (sc->sc_polling) 1266 return; 1267 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1268 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1269 r &= ~(SAB_RFC_RFDF); 1270 SAB_WRITE(sc, SAB_RFC, r); 1271 sabtty_cec_wait(sc); 1272 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1273 sc->sc_polling = 1; 1274 } else { 1275 if (!sc->sc_polling) 1276 return; 1277 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1278 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1279 sabtty_cec_wait(sc); 1280 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1281 sc->sc_polling = 0; 1282 } 1283 } 1284 1285 void 1286 sab_cnputc(dev, c) 1287 dev_t dev; 1288 int c; 1289 { 1290 struct sabtty_softc *sc = sabtty_cons_output; 1291 1292 if (sc == NULL) 1293 return; 1294 sabtty_cnputc(sc, c); 1295 } 1296 1297 void 1298 sab_cnpollc(dev, on) 1299 dev_t dev; 1300 int on; 1301 { 1302 struct sabtty_softc *sc = sabtty_cons_input; 1303 1304 sabtty_cnpollc(sc, on); 1305 } 1306 1307 int 1308 sab_cngetc(dev) 1309 dev_t dev; 1310 { 1311 struct sabtty_softc *sc = sabtty_cons_input; 1312 1313 if (sc == NULL) 1314 return (-1); 1315 return (sabtty_cngetc(sc)); 1316 } 1317 1318 void 1319 sabtty_console_flags(sc) 1320 struct sabtty_softc *sc; 1321 { 1322 int node, channel, cookie; 1323 char buf[255]; 1324 1325 node = sc->sc_parent->sc_node; 1326 channel = sc->sc_portno; 1327 1328 /* Default to channel 0 if there are no explicit prom args */ 1329 cookie = 0; 1330 1331 if (node == prom_instance_to_package(prom_stdin())) { 1332 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1333 strcmp("ttyb", buf) == 0) 1334 cookie = 1; 1335 1336 if (channel == cookie) 1337 sc->sc_flags |= SABTTYF_CONS_IN; 1338 } 1339 1340 /* Default to same channel if there are no explicit prom args */ 1341 1342 if (node == prom_instance_to_package(prom_stdout())) { 1343 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1344 strcmp("ttyb", buf) == 0) 1345 cookie = 1; 1346 1347 if (channel == cookie) 1348 sc->sc_flags |= SABTTYF_CONS_OUT; 1349 } 1350 } 1351 1352 void 1353 sabtty_shutdown(vsc) 1354 void *vsc; 1355 { 1356 struct sabtty_softc *sc = vsc; 1357 1358 /* Have to put the chip back into single char mode */ 1359 sc->sc_flags |= SABTTYF_DONTDDB; 1360 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1361 sabtty_cec_wait(sc); 1362 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1363 sabtty_cec_wait(sc); 1364 } 1365
Indexes created Thu Sep 25 02:09:54 GMT 2025