sab.c revision 1.37
1 /* $NetBSD: sab.c,v 1.37 2007/03/04 06:00:49 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 1.37 2007/03/04 06:00:49 christos Exp $"); 46 47 #include "opt_kgdb.h" 48 #include <sys/types.h> 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/device.h> 52 #include <sys/conf.h> 53 #include <sys/file.h> 54 #include <sys/ioctl.h> 55 #include <sys/kernel.h> 56 #include <sys/proc.h> 57 #include <sys/tty.h> 58 #include <sys/syslog.h> 59 #include <sys/kauth.h> 60 #include <sys/kgdb.h> 61 62 #include <machine/autoconf.h> 63 #include <machine/openfirm.h> 64 65 #include <dev/cons.h> 66 67 #include <dev/ebus/ebusreg.h> 68 #include <dev/ebus/ebusvar.h> 69 #include <sparc64/dev/sab82532reg.h> 70 71 #include "locators.h" 72 73 #define SABUNIT(x) (minor(x) & 0x7ffff) 74 #define SABDIALOUT(x) (minor(x) & 0x80000) 75 76 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 77 78 struct sab_softc { 79 struct device sc_dv; 80 struct intrhand * sc_ih; 81 bus_space_tag_t sc_bt; 82 bus_space_handle_t sc_bh; 83 struct sabtty_softc * sc_child[SAB_NCHAN]; 84 u_int sc_nchild; 85 void * sc_softintr; 86 int sc_node; 87 }; 88 89 struct sabtty_attach_args { 90 u_int sbt_portno; 91 }; 92 93 struct sabtty_softc { 94 struct device sc_dv; 95 struct sab_softc * sc_parent; 96 bus_space_tag_t sc_bt; 97 bus_space_handle_t sc_bh; 98 struct tty * sc_tty; 99 u_int sc_portno; 100 uint8_t sc_pvr_dtr, sc_pvr_dsr; 101 uint8_t sc_imr0, sc_imr1; 102 int sc_openflags; 103 u_char * sc_txp; 104 int sc_txc; 105 int sc_flags; 106 #define SABTTYF_STOP 0x01 107 #define SABTTYF_DONE 0x02 108 #define SABTTYF_RINGOVERFLOW 0x04 109 #define SABTTYF_CDCHG 0x08 110 #define SABTTYF_CONS_IN 0x10 111 #define SABTTYF_CONS_OUT 0x20 112 #define SABTTYF_TXDRAIN 0x40 113 #define SABTTYF_DONTDDB 0x80 114 uint8_t sc_rbuf[SABTTY_RBUF_SIZE]; 115 uint8_t *sc_rend, *sc_rput, *sc_rget; 116 uint8_t sc_polling, sc_pollrfc; 117 }; 118 119 struct sabtty_softc *sabtty_cons_input; 120 struct sabtty_softc *sabtty_cons_output; 121 122 #define SAB_READ(sc,r) \ 123 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 124 #define SAB_WRITE(sc,r,v) \ 125 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 126 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 127 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 128 129 int sab_match(struct device *, struct cfdata *, void *); 130 void sab_attach(struct device *, struct device *, void *); 131 int sab_print(void *, const char *); 132 int sab_intr(void *); 133 134 void sab_softintr(void *); 135 void sab_cnputc(dev_t, int); 136 int sab_cngetc(dev_t); 137 void sab_cnpollc(dev_t, int); 138 139 int sabtty_match(struct device *, struct cfdata *, void *); 140 void sabtty_attach(struct device *, struct device *, void *); 141 void sabtty_start(struct tty *); 142 int sabtty_param(struct tty *, struct termios *); 143 int sabtty_intr(struct sabtty_softc *, int *); 144 void sabtty_softintr(struct sabtty_softc *); 145 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 146 void sabtty_cec_wait(struct sabtty_softc *); 147 void sabtty_tec_wait(struct sabtty_softc *); 148 void sabtty_reset(struct sabtty_softc *); 149 void sabtty_flush(struct sabtty_softc *); 150 int sabtty_speed(int); 151 void sabtty_console_flags(struct sabtty_softc *); 152 void sabtty_cnpollc(struct sabtty_softc *, int); 153 void sabtty_shutdown(void *); 154 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 155 156 #ifdef KGDB 157 int sab_kgdb_check(struct sabtty_softc *); 158 void sab_kgdb_init(struct sabtty_softc *); 159 #endif 160 161 void sabtty_cnputc(struct sabtty_softc *, int); 162 int sabtty_cngetc(struct sabtty_softc *); 163 164 CFATTACH_DECL(sab, sizeof(struct sab_softc), 165 sab_match, sab_attach, NULL, NULL); 166 167 extern struct cfdriver sab_cd; 168 169 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 170 sabtty_match, sabtty_attach, NULL, NULL); 171 172 extern struct cfdriver sabtty_cd; 173 174 dev_type_open(sabopen); 175 dev_type_close(sabclose); 176 dev_type_read(sabread); 177 dev_type_write(sabwrite); 178 dev_type_ioctl(sabioctl); 179 dev_type_stop(sabstop); 180 dev_type_tty(sabtty); 181 dev_type_poll(sabpoll); 182 183 static struct cnm_state sabtty_cnm_state; 184 185 const struct cdevsw sabtty_cdevsw = { 186 sabopen, sabclose, sabread, sabwrite, sabioctl, 187 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 188 }; 189 190 struct sabtty_rate { 191 int baud; 192 int n, m; 193 }; 194 195 struct sabtty_rate sabtty_baudtable[] = { 196 { 50, 35, 10 }, 197 { 75, 47, 9 }, 198 { 110, 32, 9 }, 199 { 134, 53, 8 }, 200 { 150, 47, 8 }, 201 { 200, 35, 8 }, 202 { 300, 47, 7 }, 203 { 600, 47, 6 }, 204 { 1200, 47, 5 }, 205 { 1800, 31, 5 }, 206 { 2400, 47, 4 }, 207 { 4800, 47, 3 }, 208 { 9600, 47, 2 }, 209 { 19200, 47, 1 }, 210 { 38400, 23, 1 }, 211 { 57600, 15, 1 }, 212 { 115200, 7, 1 }, 213 { 230400, 3, 1 }, 214 { 460800, 1, 1 }, 215 { 76800, 11, 1 }, 216 { 153600, 5, 1 }, 217 { 307200, 3, 1 }, 218 { 614400, 3, 0 }, 219 { 921600, 0, 1 }, 220 }; 221 222 int 223 sab_match(struct device *parent, struct cfdata *match, void *aux) 224 { 225 struct ebus_attach_args *ea = aux; 226 char *compat; 227 228 if (strcmp(ea->ea_name, "se") == 0) 229 return (1); 230 231 compat = prom_getpropstring(ea->ea_node, "compatible"); 232 if (compat != NULL && !strcmp(compat, "sab82532")) 233 return (1); 234 235 return (0); 236 } 237 238 void 239 sab_attach(struct device *parent, struct device *self, void *aux) 240 { 241 struct sab_softc *sc = (struct sab_softc *)self; 242 struct ebus_attach_args *ea = aux; 243 uint8_t r; 244 u_int i; 245 int locs[SABCF_NLOCS]; 246 247 sc->sc_bt = ea->ea_bustag; 248 sc->sc_node = ea->ea_node; 249 250 /* Use prom mapping, if available. */ 251 if (ea->ea_nvaddr) 252 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], 253 &sc->sc_bh); 254 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 255 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 256 printf(": can't map register space\n"); 257 return; 258 } 259 260 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 261 IPL_TTY, sab_intr, sc); 262 if (sc->sc_ih == NULL) { 263 printf(": can't map interrupt\n"); 264 return; 265 } 266 267 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 268 if (sc->sc_softintr == NULL) { 269 printf(": can't get soft intr\n"); 270 return; 271 } 272 273 aprint_normal(": rev "); 274 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 275 switch (r) { 276 case SAB_VSTR_V_1: 277 aprint_normal("1"); 278 break; 279 case SAB_VSTR_V_2: 280 aprint_normal("2"); 281 break; 282 case SAB_VSTR_V_32: 283 aprint_normal("3.2"); 284 break; 285 default: 286 aprint_normal("unknown(0x%x)", r); 287 break; 288 } 289 aprint_normal("\n"); 290 291 /* Let current output drain */ 292 DELAY(100000); 293 294 /* Set all pins, except DTR pins to be inputs */ 295 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 296 /* Disable port interrupts */ 297 SAB_WRITE(sc, SAB_PIM, 0xff); 298 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 299 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 300 301 for (i = 0; i < SAB_NCHAN; i++) { 302 struct sabtty_attach_args stax; 303 304 stax.sbt_portno = i; 305 306 locs[SABCF_CHANNEL] = i; 307 308 sc->sc_child[i] = 309 (struct sabtty_softc *)config_found_sm_loc(self, 310 "sab", locs, &stax, sab_print, config_stdsubmatch); 311 if (sc->sc_child[i] != NULL) 312 sc->sc_nchild++; 313 } 314 } 315 316 int 317 sab_print(void *args, const char *name) 318 { 319 struct sabtty_attach_args *sa = args; 320 321 if (name) 322 aprint_normal("sabtty at %s", name); 323 aprint_normal(" port %u", sa->sbt_portno); 324 return (UNCONF); 325 } 326 327 int 328 sab_intr(void *vsc) 329 { 330 struct sab_softc *sc = vsc; 331 int r = 0, needsoft = 0; 332 uint8_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(void *vsc) 354 { 355 struct sab_softc *sc = vsc; 356 357 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 358 sabtty_softintr(sc->sc_child[0]); 359 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 360 sabtty_softintr(sc->sc_child[1]); 361 } 362 363 int 364 sabtty_match(struct device *parent, struct cfdata *match, void *aux) 365 { 366 367 return (1); 368 } 369 370 void 371 sabtty_attach(struct device *parent, struct device *self, void *aux) 372 { 373 struct sabtty_softc *sc = (struct sabtty_softc *)self; 374 struct sabtty_attach_args *sa = aux; 375 int r; 376 int maj; 377 int is_kgdb = 0; 378 379 #ifdef KGDB 380 is_kgdb = sab_kgdb_check(sc); 381 #endif 382 383 if (!is_kgdb) { 384 sc->sc_tty = ttymalloc(); 385 if (sc->sc_tty == NULL) { 386 aprint_normal(": failed to allocate tty\n"); 387 return; 388 } 389 tty_attach(sc->sc_tty); 390 sc->sc_tty->t_oproc = sabtty_start; 391 sc->sc_tty->t_param = sabtty_param; 392 } 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, device_unit(self)); 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, device_unit(self)); 466 } 467 aprint_normal(": console %s", acc); 468 } else { 469 /* Not a console... */ 470 sabtty_reset(sc); 471 472 #ifdef KGDB 473 if (is_kgdb) { 474 sab_kgdb_init(sc); 475 aprint_normal(": kgdb"); 476 } 477 #endif 478 } 479 480 aprint_normal("\n"); 481 } 482 483 int 484 sabtty_intr(struct sabtty_softc *sc, int *needsoftp) 485 { 486 uint8_t isr0, isr1; 487 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 488 489 isr0 = SAB_READ(sc, SAB_ISR0); 490 isr1 = SAB_READ(sc, SAB_ISR1); 491 492 if (isr0 || isr1) 493 r = 1; 494 495 if (isr0 & SAB_ISR0_RPF) { 496 len = 32; 497 clearfifo = 1; 498 } 499 if (isr0 & SAB_ISR0_TCD) { 500 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 501 clearfifo = 1; 502 } 503 if (isr0 & SAB_ISR0_TIME) { 504 sabtty_cec_wait(sc); 505 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 506 } 507 if (isr0 & SAB_ISR0_RFO) { 508 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 509 clearfifo = 1; 510 } 511 if (len != 0) { 512 uint8_t *ptr, b; 513 514 ptr = sc->sc_rput; 515 for (i = 0; i < len; i++) { 516 b = SAB_READ(sc, SAB_RFIFO); 517 if (i % 2 == 0) /* skip status byte */ 518 cn_check_magic(sc->sc_tty->t_dev, 519 b, sabtty_cnm_state); 520 *ptr++ = b; 521 if (ptr == sc->sc_rend) 522 ptr = sc->sc_rbuf; 523 if (ptr == sc->sc_rget) { 524 if (ptr == sc->sc_rbuf) 525 ptr = sc->sc_rend; 526 ptr--; 527 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 528 } 529 } 530 sc->sc_rput = ptr; 531 needsoft = 1; 532 } 533 534 if (clearfifo) { 535 sabtty_cec_wait(sc); 536 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 537 } 538 539 if (isr0 & SAB_ISR0_CDSC) { 540 sc->sc_flags |= SABTTYF_CDCHG; 541 needsoft = 1; 542 } 543 544 if (isr1 & SAB_ISR1_BRKT) 545 cn_check_magic(sc->sc_tty->t_dev, 546 CNC_BREAK, sabtty_cnm_state); 547 548 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 549 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 550 (sc->sc_flags & SABTTYF_STOP) == 0) { 551 if (sc->sc_txc < 32) 552 len = sc->sc_txc; 553 else 554 len = 32; 555 556 if (len > 0) { 557 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 558 sc->sc_txp += len; 559 sc->sc_txc -= len; 560 561 sabtty_cec_wait(sc); 562 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 563 564 /* 565 * Prevent the false end of xmit from 566 * confusing things below. 567 */ 568 isr1 &= ~SAB_ISR1_ALLS; 569 } 570 } 571 572 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 573 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 574 sc->sc_imr1 |= SAB_IMR1_XPR; 575 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 576 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 577 } 578 } 579 } 580 581 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 582 (sc->sc_flags & SABTTYF_STOP))) { 583 if (sc->sc_flags & SABTTYF_TXDRAIN) 584 wakeup(sc); 585 sc->sc_flags &= ~SABTTYF_STOP; 586 sc->sc_flags |= SABTTYF_DONE; 587 sc->sc_imr1 |= SAB_IMR1_ALLS; 588 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 589 needsoft = 1; 590 } 591 592 if (needsoft) 593 *needsoftp = needsoft; 594 return (r); 595 } 596 597 void 598 sabtty_softintr(struct sabtty_softc *sc) 599 { 600 struct tty *tp = sc->sc_tty; 601 int s, flags; 602 uint8_t r; 603 604 if (tp == NULL) 605 return; 606 607 if ((tp->t_state & TS_ISOPEN) == 0) 608 return; 609 610 while (sc->sc_rget != sc->sc_rput) { 611 int data; 612 uint8_t stat; 613 614 data = sc->sc_rget[0]; 615 stat = sc->sc_rget[1]; 616 sc->sc_rget += 2; 617 if (stat & SAB_RSTAT_PE) 618 data |= TTY_PE; 619 if (stat & SAB_RSTAT_FE) 620 data |= TTY_FE; 621 if (sc->sc_rget == sc->sc_rend) 622 sc->sc_rget = sc->sc_rbuf; 623 624 (*tp->t_linesw->l_rint)(data, tp); 625 } 626 627 s = splhigh(); 628 flags = sc->sc_flags; 629 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 630 splx(s); 631 632 if (flags & SABTTYF_CDCHG) { 633 s = spltty(); 634 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 635 splx(s); 636 637 (*tp->t_linesw->l_modem)(tp, r); 638 } 639 640 if (flags & SABTTYF_RINGOVERFLOW) 641 log(LOG_WARNING, "%s: ring overflow\n", 642 device_xname(&sc->sc_dv)); 643 644 if (flags & SABTTYF_DONE) { 645 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 646 tp->t_state &= ~TS_BUSY; 647 (*tp->t_linesw->l_start)(tp); 648 } 649 } 650 651 int 652 sabopen(dev_t dev, int flags, int mode, struct lwp *l) 653 { 654 struct sabtty_softc *sc; 655 struct tty *tp; 656 struct proc *p; 657 int s, s1; 658 659 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 660 if (sc == NULL) 661 return (ENXIO); 662 663 tp = sc->sc_tty; 664 tp->t_dev = dev; 665 p = l->l_proc; 666 667 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 668 return (EBUSY); 669 670 if ((tp->t_state & TS_ISOPEN) == 0) { 671 ttychars(tp); 672 tp->t_iflag = TTYDEF_IFLAG; 673 tp->t_oflag = TTYDEF_OFLAG; 674 tp->t_cflag = TTYDEF_CFLAG; 675 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 676 tp->t_cflag |= CLOCAL; 677 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 678 tp->t_cflag |= CRTSCTS; 679 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 680 tp->t_cflag |= MDMBUF; 681 tp->t_lflag = TTYDEF_LFLAG; 682 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 683 684 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 685 686 s = spltty(); 687 688 ttsetwater(tp); 689 690 s1 = splhigh(); 691 sabtty_reset(sc); 692 sabtty_param(tp, &tp->t_termios); 693 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 694 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 695 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 696 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 697 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 698 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 699 sabtty_cec_wait(sc); 700 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 701 sabtty_cec_wait(sc); 702 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 703 sabtty_cec_wait(sc); 704 splx(s1); 705 706 sabtty_flush(sc); 707 708 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 709 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 710 tp->t_state |= TS_CARR_ON; 711 else 712 tp->t_state &= ~TS_CARR_ON; 713 } else { 714 s = spltty(); 715 } 716 717 if ((flags & O_NONBLOCK) == 0) { 718 while ((tp->t_cflag & CLOCAL) == 0 && 719 (tp->t_state & TS_CARR_ON) == 0) { 720 int error; 721 722 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 723 "sabttycd", 0); 724 if (error != 0) { 725 splx(s); 726 return (error); 727 } 728 } 729 } 730 731 splx(s); 732 733 s = (*tp->t_linesw->l_open)(dev, tp); 734 if (s != 0) { 735 if (tp->t_state & TS_ISOPEN) 736 return (s); 737 738 if (tp->t_cflag & HUPCL) { 739 sabtty_mdmctrl(sc, 0, DMSET); 740 (void)tsleep(sc, TTIPRI, ttclos, hz); 741 } 742 743 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 744 /* Flush and power down if we're not the console */ 745 sabtty_flush(sc); 746 sabtty_reset(sc); 747 } 748 } 749 return (s); 750 } 751 752 int 753 sabclose(dev_t dev, int flags, int mode, struct lwp *l) 754 { 755 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 756 struct sab_softc *bc = sc->sc_parent; 757 struct tty *tp = sc->sc_tty; 758 int s; 759 760 (*tp->t_linesw->l_close)(tp, flags); 761 762 s = spltty(); 763 764 if ((tp->t_state & TS_ISOPEN) == 0) { 765 /* Wait for output drain */ 766 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 767 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 768 sc->sc_flags |= SABTTYF_TXDRAIN; 769 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 770 sc->sc_imr1 |= SAB_IMR1_ALLS; 771 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 772 sc->sc_flags &= ~SABTTYF_TXDRAIN; 773 774 if (tp->t_cflag & HUPCL) { 775 sabtty_mdmctrl(sc, 0, DMSET); 776 (void)tsleep(bc, TTIPRI, ttclos, hz); 777 } 778 779 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 780 /* Flush and power down if we're not the console */ 781 sabtty_flush(sc); 782 sabtty_reset(sc); 783 } 784 } 785 786 ttyclose(tp); 787 splx(s); 788 789 return (0); 790 } 791 792 int 793 sabread(dev_t dev, struct uio *uio, int flags) 794 { 795 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 796 struct tty *tp = sc->sc_tty; 797 798 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 799 } 800 801 int 802 sabwrite(dev_t dev, struct uio *uio, int flags) 803 { 804 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 805 struct tty *tp = sc->sc_tty; 806 807 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 808 } 809 810 int 811 sabioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 812 { 813 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 814 struct tty *tp = sc->sc_tty; 815 int error; 816 817 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 818 if (error >= 0) 819 return (error); 820 821 error = ttioctl(tp, cmd, data, flags, l); 822 if (error >= 0) 823 return (error); 824 825 error = 0; 826 827 switch (cmd) { 828 case TIOCSBRK: 829 SAB_WRITE(sc, SAB_DAFO, 830 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 831 break; 832 case TIOCCBRK: 833 SAB_WRITE(sc, SAB_DAFO, 834 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 835 break; 836 case TIOCSDTR: 837 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 838 break; 839 case TIOCCDTR: 840 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 841 break; 842 case TIOCMBIS: 843 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 844 break; 845 case TIOCMBIC: 846 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 847 break; 848 case TIOCMGET: 849 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 850 break; 851 case TIOCMSET: 852 sabtty_mdmctrl(sc, *((int *)data), DMSET); 853 break; 854 case TIOCGFLAGS: 855 *((int *)data) = sc->sc_openflags; 856 break; 857 case TIOCSFLAGS: 858 if (kauth_authorize_device_tty(l->l_cred, 859 KAUTH_DEVICE_TTY_PRIVSET, tp)) 860 error = EPERM; 861 else 862 sc->sc_openflags = *((int *)data) & 863 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 864 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 865 break; 866 default: 867 error = ENOTTY; 868 } 869 870 return (error); 871 } 872 873 struct tty * 874 sabtty(dev_t dev) 875 { 876 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 877 878 return (sc->sc_tty); 879 } 880 881 void 882 sabstop(struct tty *tp, int flag) 883 { 884 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 885 int s; 886 887 s = spltty(); 888 if (tp->t_state & TS_BUSY) { 889 if ((tp->t_state & TS_TTSTOP) == 0) 890 tp->t_state |= TS_FLUSH; 891 sc->sc_flags |= SABTTYF_STOP; 892 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 893 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 894 } 895 splx(s); 896 } 897 898 int 899 sabpoll(dev_t dev, int events, struct lwp *l) 900 { 901 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 902 struct tty *tp = sc->sc_tty; 903 904 return ((*tp->t_linesw->l_poll)(tp, events, l)); 905 } 906 907 int 908 sabtty_mdmctrl(struct sabtty_softc *sc, int bits, int how) 909 { 910 uint8_t r; 911 int s; 912 913 s = spltty(); 914 switch (how) { 915 case DMGET: 916 bits = 0; 917 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 918 bits |= TIOCM_CTS; 919 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 920 bits |= TIOCM_CD; 921 922 r = SAB_READ(sc, SAB_PVR); 923 if ((r & sc->sc_pvr_dtr) == 0) 924 bits |= TIOCM_DTR; 925 if ((r & sc->sc_pvr_dsr) == 0) 926 bits |= TIOCM_DSR; 927 928 r = SAB_READ(sc, SAB_MODE); 929 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 930 bits |= TIOCM_RTS; 931 break; 932 case DMSET: 933 r = SAB_READ(sc, SAB_MODE); 934 if (bits & TIOCM_RTS) { 935 r &= ~SAB_MODE_FRTS; 936 r |= SAB_MODE_RTS; 937 } else 938 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 939 SAB_WRITE(sc, SAB_MODE, r); 940 941 r = SAB_READ(sc, SAB_PVR); 942 if (bits & TIOCM_DTR) 943 r &= ~sc->sc_pvr_dtr; 944 else 945 r |= sc->sc_pvr_dtr; 946 SAB_WRITE(sc, SAB_PVR, r); 947 break; 948 case DMBIS: 949 if (bits & TIOCM_RTS) { 950 r = SAB_READ(sc, SAB_MODE); 951 r &= ~SAB_MODE_FRTS; 952 r |= SAB_MODE_RTS; 953 SAB_WRITE(sc, SAB_MODE, r); 954 } 955 if (bits & TIOCM_DTR) { 956 r = SAB_READ(sc, SAB_PVR); 957 r &= ~sc->sc_pvr_dtr; 958 SAB_WRITE(sc, SAB_PVR, r); 959 } 960 break; 961 case DMBIC: 962 if (bits & TIOCM_RTS) { 963 r = SAB_READ(sc, SAB_MODE); 964 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 965 SAB_WRITE(sc, SAB_MODE, r); 966 } 967 if (bits & TIOCM_DTR) { 968 r = SAB_READ(sc, SAB_PVR); 969 r |= sc->sc_pvr_dtr; 970 SAB_WRITE(sc, SAB_PVR, r); 971 } 972 break; 973 } 974 splx(s); 975 return (bits); 976 } 977 978 int 979 sabttyparam(struct sabtty_softc *sc, struct tty *tp, struct termios *t) 980 { 981 int s, ospeed; 982 tcflag_t cflag; 983 uint8_t dafo, r; 984 985 ospeed = sabtty_speed(t->c_ospeed); 986 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 987 return (EINVAL); 988 989 s = spltty(); 990 991 /* hang up line if ospeed is zero, otherwise raise dtr */ 992 sabtty_mdmctrl(sc, TIOCM_DTR, 993 (t->c_ospeed == 0) ? DMBIC : DMBIS); 994 995 dafo = SAB_READ(sc, SAB_DAFO); 996 997 cflag = t->c_cflag; 998 999 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1000 cflag |= CLOCAL; 1001 cflag &= ~HUPCL; 1002 } 1003 1004 if (cflag & CSTOPB) 1005 dafo |= SAB_DAFO_STOP; 1006 else 1007 dafo &= ~SAB_DAFO_STOP; 1008 1009 dafo &= ~SAB_DAFO_CHL_CSIZE; 1010 switch (cflag & CSIZE) { 1011 case CS5: 1012 dafo |= SAB_DAFO_CHL_CS5; 1013 break; 1014 case CS6: 1015 dafo |= SAB_DAFO_CHL_CS6; 1016 break; 1017 case CS7: 1018 dafo |= SAB_DAFO_CHL_CS7; 1019 break; 1020 default: 1021 dafo |= SAB_DAFO_CHL_CS8; 1022 break; 1023 } 1024 1025 dafo &= ~SAB_DAFO_PARMASK; 1026 if (cflag & PARENB) { 1027 if (cflag & PARODD) 1028 dafo |= SAB_DAFO_PAR_ODD; 1029 else 1030 dafo |= SAB_DAFO_PAR_EVEN; 1031 } else 1032 dafo |= SAB_DAFO_PAR_NONE; 1033 SAB_WRITE(sc, SAB_DAFO, dafo); 1034 1035 if (ospeed != 0) { 1036 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1037 r = SAB_READ(sc, SAB_CCR2); 1038 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1039 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1040 SAB_WRITE(sc, SAB_CCR2, r); 1041 } 1042 1043 r = SAB_READ(sc, SAB_MODE); 1044 r |= SAB_MODE_RAC; 1045 if (cflag & CRTSCTS) { 1046 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1047 r |= SAB_MODE_FRTS; 1048 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1049 } else { 1050 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1051 r &= ~SAB_MODE_FRTS; 1052 sc->sc_imr1 |= SAB_IMR1_CSC; 1053 } 1054 SAB_WRITE(sc, SAB_MODE, r); 1055 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1056 1057 tp->t_cflag = cflag; 1058 1059 splx(s); 1060 return (0); 1061 } 1062 1063 int 1064 sabtty_param(struct tty *tp, struct termios *t) 1065 { 1066 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1067 1068 return (sabttyparam(sc, tp, t)); 1069 } 1070 1071 void 1072 sabtty_start(struct tty *tp) 1073 { 1074 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1075 int s; 1076 1077 s = spltty(); 1078 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1079 if (tp->t_outq.c_cc <= tp->t_lowat) { 1080 if (tp->t_state & TS_ASLEEP) { 1081 tp->t_state &= ~TS_ASLEEP; 1082 wakeup(&tp->t_outq); 1083 } 1084 selwakeup(&tp->t_wsel); 1085 } 1086 if (tp->t_outq.c_cc) { 1087 sc->sc_txc = ndqb(&tp->t_outq, 0); 1088 sc->sc_txp = tp->t_outq.c_cf; 1089 tp->t_state |= TS_BUSY; 1090 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1091 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1092 } 1093 } 1094 splx(s); 1095 } 1096 1097 void 1098 sabtty_cec_wait(struct sabtty_softc *sc) 1099 { 1100 int i = 50000; 1101 1102 for (;;) { 1103 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1104 return; 1105 if (--i == 0) 1106 break; 1107 DELAY(1); 1108 } 1109 } 1110 1111 void 1112 sabtty_tec_wait(struct sabtty_softc *sc) 1113 { 1114 int i = 200000; 1115 1116 for (;;) { 1117 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1118 return; 1119 if (--i == 0) 1120 break; 1121 DELAY(1); 1122 } 1123 } 1124 1125 void 1126 sabtty_reset(struct sabtty_softc *sc) 1127 { 1128 /* power down */ 1129 SAB_WRITE(sc, SAB_CCR0, 0); 1130 1131 /* set basic configuration */ 1132 SAB_WRITE(sc, SAB_CCR0, 1133 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1134 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1135 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1136 SAB_WRITE(sc, SAB_CCR3, 0); 1137 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG | SAB_CCR4_ICD); 1138 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1139 SAB_WRITE(sc, SAB_RFC, 1140 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1141 1142 /* clear interrupts */ 1143 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1144 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1145 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1146 (void)SAB_READ(sc, SAB_ISR0); 1147 (void)SAB_READ(sc, SAB_ISR1); 1148 } 1149 1150 void 1151 sabtty_flush(struct sabtty_softc *sc) 1152 { 1153 /* clear rx fifo */ 1154 sabtty_cec_wait(sc); 1155 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1156 1157 /* clear tx fifo */ 1158 sabtty_cec_wait(sc); 1159 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1160 } 1161 1162 int 1163 sabtty_speed(int rate) 1164 { 1165 int i, len, r; 1166 1167 if (rate == 0) 1168 return (0); 1169 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1170 for (i = 0; i < len; i++) { 1171 if (rate == sabtty_baudtable[i].baud) { 1172 r = sabtty_baudtable[i].n | 1173 (sabtty_baudtable[i].m << 6); 1174 return (r); 1175 } 1176 } 1177 return (-1); 1178 } 1179 1180 void 1181 sabtty_cnputc(struct sabtty_softc *sc, int c) 1182 { 1183 sabtty_tec_wait(sc); 1184 SAB_WRITE(sc, SAB_TIC, c); 1185 sabtty_tec_wait(sc); 1186 } 1187 1188 int 1189 sabtty_cngetc(struct sabtty_softc *sc) 1190 { 1191 uint8_t r, len; 1192 1193 again: 1194 do { 1195 r = SAB_READ(sc, SAB_STAR); 1196 } while ((r & SAB_STAR_RFNE) == 0); 1197 1198 /* 1199 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1200 * (I hate this chip... hate hate hate). 1201 */ 1202 sabtty_cec_wait(sc); 1203 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1204 1205 /* Wait for RFIFO to come ready */ 1206 do { 1207 r = SAB_READ(sc, SAB_ISR0); 1208 } while ((r & SAB_ISR0_TCD) == 0); 1209 1210 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1211 if (len == 0) 1212 goto again; /* Shouldn't happen... */ 1213 1214 r = SAB_READ(sc, SAB_RFIFO); 1215 1216 /* 1217 * Blow away everything left in the FIFO... 1218 */ 1219 sabtty_cec_wait(sc); 1220 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1221 return (r); 1222 } 1223 1224 void 1225 sabtty_cnpollc(struct sabtty_softc *sc, int on) 1226 { 1227 uint8_t r; 1228 1229 if (on) { 1230 if (sc->sc_polling) 1231 return; 1232 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1233 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1234 r &= ~(SAB_RFC_RFDF); 1235 SAB_WRITE(sc, SAB_RFC, r); 1236 sabtty_cec_wait(sc); 1237 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1238 sc->sc_polling = 1; 1239 } else { 1240 if (!sc->sc_polling) 1241 return; 1242 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1243 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1244 sabtty_cec_wait(sc); 1245 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1246 sc->sc_polling = 0; 1247 } 1248 } 1249 1250 void 1251 sab_cnputc(dev_t dev, int c) 1252 { 1253 struct sabtty_softc *sc = sabtty_cons_output; 1254 1255 if (sc == NULL) 1256 return; 1257 sabtty_cnputc(sc, c); 1258 } 1259 1260 void 1261 sab_cnpollc(dev_t dev, int on) 1262 { 1263 struct sabtty_softc *sc = sabtty_cons_input; 1264 1265 sabtty_cnpollc(sc, on); 1266 } 1267 1268 int 1269 sab_cngetc(dev_t dev) 1270 { 1271 struct sabtty_softc *sc = sabtty_cons_input; 1272 1273 if (sc == NULL) 1274 return (-1); 1275 return (sabtty_cngetc(sc)); 1276 } 1277 1278 void 1279 sabtty_console_flags(struct sabtty_softc *sc) 1280 { 1281 int node, channel, cookie; 1282 char buf[255]; 1283 1284 node = sc->sc_parent->sc_node; 1285 channel = sc->sc_portno; 1286 1287 /* Default to channel 0 if there are no explicit prom args */ 1288 cookie = 0; 1289 1290 if (node == prom_instance_to_package(prom_stdin())) { 1291 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1292 strcmp("ttyb", buf) == 0) 1293 cookie = 1; 1294 1295 if (channel == cookie) 1296 sc->sc_flags |= SABTTYF_CONS_IN; 1297 } 1298 1299 /* Default to same channel if there are no explicit prom args */ 1300 1301 if (node == prom_instance_to_package(prom_stdout())) { 1302 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1303 strcmp("ttyb", buf) == 0) 1304 cookie = 1; 1305 1306 if (channel == cookie) 1307 sc->sc_flags |= SABTTYF_CONS_OUT; 1308 } 1309 } 1310 1311 void 1312 sabtty_shutdown(void *vsc) 1313 { 1314 struct sabtty_softc *sc = vsc; 1315 1316 /* Have to put the chip back into single char mode */ 1317 sc->sc_flags |= SABTTYF_DONTDDB; 1318 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1319 sabtty_cec_wait(sc); 1320 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1321 sabtty_cec_wait(sc); 1322 } 1323 1324 #ifdef KGDB 1325 static int 1326 sab_kgdb_getc(void *arg) 1327 { 1328 struct sabtty_softc *sc = arg; 1329 1330 return sabtty_cngetc(sc); 1331 } 1332 1333 static void 1334 sab_kgdb_putc(void *arg, int c) 1335 { 1336 struct sabtty_softc *sc = arg; 1337 1338 return sabtty_cnputc(sc, c); 1339 } 1340 1341 #ifndef KGDB_DEVRATE 1342 #define KGDB_DEVRATE 9600 1343 #endif 1344 1345 int 1346 sab_kgdb_check(struct sabtty_softc *sc) 1347 { 1348 return strcmp(device_xname(&sc->sc_dv), KGDB_DEVNAME) == 0; 1349 } 1350 1351 void 1352 sab_kgdb_init(struct sabtty_softc *sc) 1353 { 1354 int sp; 1355 uint8_t dafo, r; 1356 extern int kgdb_break_at_attach; 1357 1358 kgdb_attach(sab_kgdb_getc, sab_kgdb_putc, sc); 1359 kgdb_dev = 123; /* not used, but checked against NODEV */ 1360 1361 /* 1362 * Configure the port to speed/8n1 1363 */ 1364 dafo = SAB_READ(sc, SAB_DAFO); 1365 dafo &= ~(SAB_DAFO_STOP|SAB_DAFO_CHL_CSIZE|SAB_DAFO_PARMASK); 1366 dafo |= SAB_DAFO_CHL_CS8|SAB_DAFO_PAR_NONE; 1367 SAB_WRITE(sc, SAB_DAFO, dafo); 1368 sp = sabtty_speed(KGDB_DEVRATE); 1369 SAB_WRITE(sc, SAB_BGR, sp & 0xff); 1370 r = SAB_READ(sc, SAB_CCR2); 1371 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1372 r |= (sp >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1373 SAB_WRITE(sc, SAB_CCR2, r); 1374 1375 /* 1376 * If we are booting with -d, break into kgdb now 1377 */ 1378 if (kgdb_break_at_attach) 1379 kgdb_connect(1); 1380 } 1381 #endif 1382
Indexes created Sat Sep 27 14:09:57 GMT 2025