1 /* $NetBSD: sab.c,v 1.58 2022/10/26 23:59:36 riastradh 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 1.58 2022/10/26 23:59:36 riastradh 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 #include <sys/intr.h> 62 63 #include <machine/autoconf.h> 64 #include <machine/openfirm.h> 65 66 #include <dev/cons.h> 67 68 #include <dev/ebus/ebusreg.h> 69 #include <dev/ebus/ebusvar.h> 70 #include <sparc64/dev/sab82532reg.h> 71 72 #include "locators.h" 73 74 #define SABUNIT(x) TTUNIT(x) 75 #define SABDIALOUT(x) TTDIALOUT(x) 76 77 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 78 79 struct sab_softc { 80 device_t sc_dev; 81 struct intrhand * sc_ih; 82 bus_space_tag_t sc_bt; 83 bus_space_handle_t sc_bh; 84 struct sabtty_softc * sc_child[SAB_NCHAN]; 85 u_int sc_nchild; 86 void * sc_softintr; 87 int sc_node; 88 }; 89 90 struct sabtty_attach_args { 91 u_int sbt_portno; 92 }; 93 94 struct sabtty_softc { 95 device_t sc_dev; 96 struct sab_softc * sc_parent; 97 bus_space_tag_t sc_bt; 98 bus_space_handle_t sc_bh; 99 struct tty * sc_tty; 100 u_int sc_portno; 101 uint8_t sc_pvr_dtr, sc_pvr_dsr; 102 uint8_t sc_imr0, sc_imr1; 103 int sc_openflags; 104 u_char * sc_txp; 105 int sc_txc; 106 int sc_flags; 107 #define SABTTYF_STOP 0x0001 108 #define SABTTYF_DONE 0x0002 109 #define SABTTYF_RINGOVERFLOW 0x0004 110 #define SABTTYF_CDCHG 0x0008 111 #define SABTTYF_CONS_IN 0x0010 112 #define SABTTYF_CONS_OUT 0x0020 113 #define SABTTYF_TXDRAIN 0x0040 114 #define SABTTYF_DONTDDB 0x0080 115 #define SABTTYF_IS_RSC 0x0100 116 uint8_t sc_rbuf[SABTTY_RBUF_SIZE]; 117 uint8_t *sc_rend, *sc_rput, *sc_rget; 118 uint8_t sc_polling, sc_pollrfc; 119 }; 120 121 struct sabtty_softc *sabtty_cons_input; 122 struct sabtty_softc *sabtty_cons_output; 123 124 #define SAB_READ(sc,r) \ 125 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 126 #define SAB_WRITE(sc,r,v) \ 127 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 128 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 129 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 130 131 int sab_match(device_t, cfdata_t, void *); 132 void sab_attach(device_t, device_t, void *); 133 int sab_print(void *, const char *); 134 int sab_intr(void *); 135 136 void sab_softintr(void *); 137 void sab_cnputc(dev_t, int); 138 int sab_cngetc(dev_t); 139 void sab_cnpollc(dev_t, int); 140 141 int sabtty_match(device_t, cfdata_t, void *); 142 void sabtty_attach(device_t, device_t, void *); 143 void sabtty_start(struct tty *); 144 int sabtty_param(struct tty *, struct termios *); 145 int sabtty_intr(struct sabtty_softc *, int *); 146 void sabtty_softintr(struct sabtty_softc *); 147 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 148 void sabtty_cec_wait(struct sabtty_softc *); 149 void sabtty_tec_wait(struct sabtty_softc *); 150 void sabtty_reset(struct sabtty_softc *); 151 void sabtty_flush(struct sabtty_softc *); 152 int sabtty_speed(int); 153 void sabtty_console_flags(struct sabtty_softc *); 154 void sabtty_cnpollc(struct sabtty_softc *, int); 155 bool sabtty_shutdown(device_t, int); 156 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 157 158 #ifdef KGDB 159 int sab_kgdb_check(struct sabtty_softc *); 160 void sab_kgdb_init(struct sabtty_softc *); 161 #endif 162 163 void sabtty_cnputc(struct sabtty_softc *, int); 164 int sabtty_cngetc(struct sabtty_softc *); 165 166 CFATTACH_DECL_NEW(sab, sizeof(struct sab_softc), 167 sab_match, sab_attach, NULL, NULL); 168 169 extern struct cfdriver sab_cd; 170 171 CFATTACH_DECL_NEW(sabtty, sizeof(struct sabtty_softc), 172 sabtty_match, sabtty_attach, NULL, NULL); 173 174 extern struct cfdriver sabtty_cd; 175 176 dev_type_open(sabopen); 177 dev_type_close(sabclose); 178 dev_type_read(sabread); 179 dev_type_write(sabwrite); 180 dev_type_ioctl(sabioctl); 181 dev_type_stop(sabstop); 182 dev_type_tty(sabtty); 183 dev_type_poll(sabpoll); 184 185 static struct cnm_state sabtty_cnm_state; 186 187 const struct cdevsw sabtty_cdevsw = { 188 .d_open = sabopen, 189 .d_close = sabclose, 190 .d_read = sabread, 191 .d_write = sabwrite, 192 .d_ioctl = sabioctl, 193 .d_stop = sabstop, 194 .d_tty = sabtty, 195 .d_poll = sabpoll, 196 .d_mmap = nommap, 197 .d_kqfilter = ttykqfilter, 198 .d_discard = nodiscard, 199 .d_flag = D_TTY 200 }; 201 202 struct sabtty_rate { 203 int baud; 204 int n, m; 205 }; 206 207 struct sabtty_rate sabtty_baudtable[] = { 208 { 50, 35, 10 }, 209 { 75, 47, 9 }, 210 { 110, 32, 9 }, 211 { 134, 53, 8 }, 212 { 150, 47, 8 }, 213 { 200, 35, 8 }, 214 { 300, 47, 7 }, 215 { 600, 47, 6 }, 216 { 1200, 47, 5 }, 217 { 1800, 31, 5 }, 218 { 2400, 47, 4 }, 219 { 4800, 47, 3 }, 220 { 9600, 47, 2 }, 221 { 19200, 47, 1 }, 222 { 38400, 23, 1 }, 223 { 57600, 15, 1 }, 224 { 115200, 7, 1 }, 225 { 230400, 3, 1 }, 226 { 460800, 1, 1 }, 227 { 76800, 11, 1 }, 228 { 153600, 5, 1 }, 229 { 307200, 3, 1 }, 230 { 614400, 3, 0 }, 231 { 921600, 0, 1 }, 232 }; 233 234 int 235 sab_match(device_t parent, cfdata_t match, void *aux) 236 { 237 struct ebus_attach_args *ea = aux; 238 char *compat; 239 240 if (strcmp(ea->ea_name, "se") == 0 || 241 strcmp(ea->ea_name, "FJSV,se") == 0) 242 return (1); 243 244 compat = prom_getpropstring(ea->ea_node, "compatible"); 245 if (compat != NULL && !strcmp(compat, "sab82532")) 246 return (1); 247 248 return (0); 249 } 250 251 void 252 sab_attach(device_t parent, device_t self, void *aux) 253 { 254 struct sab_softc *sc = device_private(self); 255 struct ebus_attach_args *ea = aux; 256 uint8_t r; 257 u_int i; 258 int locs[SABCF_NLOCS]; 259 260 sc->sc_dev = self; 261 sc->sc_bt = ea->ea_bustag; 262 sc->sc_node = ea->ea_node; 263 264 /* Use prom mapping, if available. */ 265 if (ea->ea_nvaddr) 266 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], 267 &sc->sc_bh); 268 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 269 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 270 printf(": can't map register space\n"); 271 return; 272 } 273 274 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 275 IPL_TTY, sab_intr, sc); 276 if (sc->sc_ih == NULL) { 277 printf(": can't map interrupt\n"); 278 return; 279 } 280 281 sc->sc_softintr = softint_establish(SOFTINT_SERIAL, sab_softintr, sc); 282 if (sc->sc_softintr == NULL) { 283 printf(": can't get soft intr\n"); 284 return; 285 } 286 287 aprint_normal(": rev "); 288 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 289 switch (r) { 290 case SAB_VSTR_V_1: 291 aprint_normal("1"); 292 break; 293 case SAB_VSTR_V_2: 294 aprint_normal("2"); 295 break; 296 case SAB_VSTR_V_32: 297 aprint_normal("3.2"); 298 break; 299 default: 300 aprint_normal("unknown(0x%x)", r); 301 break; 302 } 303 aprint_normal("\n"); 304 aprint_naive(": Serial controller\n"); 305 306 /* Let current output drain */ 307 DELAY(100000); 308 309 /* Set all pins, except DTR pins to be inputs */ 310 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 311 /* Disable port interrupts */ 312 SAB_WRITE(sc, SAB_PIM, 0xff); 313 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 314 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 315 316 for (i = 0; i < SAB_NCHAN; i++) { 317 struct sabtty_attach_args stax; 318 319 stax.sbt_portno = i; 320 321 locs[SABCF_CHANNEL] = i; 322 323 sc->sc_child[i] = device_private( 324 config_found(self, &stax, sab_print, 325 CFARGS(.submatch = config_stdsubmatch, 326 .locators = locs))); 327 if (sc->sc_child[i] != NULL) 328 sc->sc_nchild++; 329 } 330 } 331 332 int 333 sab_print(void *args, const char *name) 334 { 335 struct sabtty_attach_args *sa = args; 336 337 if (name) 338 aprint_normal("sabtty at %s", name); 339 aprint_normal(" port %u", sa->sbt_portno); 340 return (UNCONF); 341 } 342 343 int 344 sab_intr(void *vsc) 345 { 346 struct sab_softc *sc = vsc; 347 int r = 0, needsoft = 0; 348 uint8_t gis; 349 350 gis = SAB_READ(sc, SAB_GIS); 351 352 /* channel A */ 353 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 354 sc->sc_child[0]->sc_tty) 355 r |= sabtty_intr(sc->sc_child[0], &needsoft); 356 357 /* channel B */ 358 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 359 sc->sc_child[1]->sc_tty) 360 r |= sabtty_intr(sc->sc_child[1], &needsoft); 361 362 if (needsoft) 363 softint_schedule(sc->sc_softintr); 364 365 return (r); 366 } 367 368 void 369 sab_softintr(void *vsc) 370 { 371 struct sab_softc *sc = vsc; 372 373 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 374 sabtty_softintr(sc->sc_child[0]); 375 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 376 sabtty_softintr(sc->sc_child[1]); 377 } 378 379 int 380 sabtty_match(device_t parent, cfdata_t match, void *aux) 381 { 382 383 return (1); 384 } 385 386 void 387 sabtty_attach(device_t parent, device_t self, void *aux) 388 { 389 struct sabtty_softc *sc = device_private(self); 390 struct sabtty_attach_args *sa = aux; 391 int r; 392 int maj; 393 int is_kgdb = 0; 394 395 sc->sc_dev = self; 396 #ifdef KGDB 397 is_kgdb = sab_kgdb_check(sc); 398 #endif 399 400 if (!is_kgdb) { 401 sc->sc_tty = tty_alloc(); 402 if (sc->sc_tty == NULL) { 403 aprint_normal(": failed to allocate tty\n"); 404 return; 405 } 406 tty_attach(sc->sc_tty); 407 sc->sc_tty->t_oproc = sabtty_start; 408 sc->sc_tty->t_param = sabtty_param; 409 } 410 411 sc->sc_parent = device_private(parent); 412 sc->sc_bt = sc->sc_parent->sc_bt; 413 sc->sc_portno = sa->sbt_portno; 414 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 415 416 switch (sa->sbt_portno) { 417 case 0: /* port A */ 418 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 419 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 420 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 421 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 422 break; 423 case 1: /* port B */ 424 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 425 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 426 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 427 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 428 break; 429 default: 430 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 431 return; 432 } 433 if (r != 0) { 434 aprint_normal(": failed to allocate register subregion\n"); 435 return; 436 } 437 438 sabtty_console_flags(sc); 439 440 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 441 struct termios t; 442 const char *acc; 443 444 /* Let residual prom output drain */ 445 DELAY(100000); 446 447 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 448 case SABTTYF_CONS_IN: 449 acc = "input"; 450 break; 451 case SABTTYF_CONS_OUT: 452 acc = "output"; 453 break; 454 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 455 default: 456 acc = "i/o"; 457 break; 458 } 459 460 t.c_ispeed= 0; 461 if (sc->sc_flags & SABTTYF_IS_RSC) 462 t.c_ospeed = 115200; 463 else 464 t.c_ospeed = 9600; 465 t.c_cflag = CREAD | CS8 | HUPCL; 466 sc->sc_tty->t_ospeed = 0; 467 sabttyparam(sc, sc->sc_tty, &t); 468 469 if (sc->sc_flags & SABTTYF_CONS_IN) { 470 sabtty_cons_input = sc; 471 cn_tab->cn_pollc = sab_cnpollc; 472 cn_tab->cn_getc = sab_cngetc; 473 maj = cdevsw_lookup_major(&sabtty_cdevsw); 474 cn_tab->cn_dev = makedev(maj, device_unit(self)); 475 pmf_device_register1(self, NULL, NULL, sabtty_shutdown); 476 cn_init_magic(&sabtty_cnm_state); 477 cn_set_magic("\047\001"); /* default magic is BREAK */ 478 } 479 480 if (sc->sc_flags & SABTTYF_CONS_OUT) { 481 sabtty_tec_wait(sc); 482 sabtty_cons_output = sc; 483 cn_tab->cn_putc = sab_cnputc; 484 maj = cdevsw_lookup_major(&sabtty_cdevsw); 485 cn_tab->cn_dev = makedev(maj, device_unit(self)); 486 } 487 aprint_normal(": console %s", acc); 488 } else { 489 /* Not a console... */ 490 sabtty_reset(sc); 491 492 #ifdef KGDB 493 if (is_kgdb) { 494 sab_kgdb_init(sc); 495 aprint_normal(": kgdb"); 496 } 497 #endif 498 } 499 500 aprint_normal("\n"); 501 aprint_naive(": Serial port\n"); 502 } 503 504 int 505 sabtty_intr(struct sabtty_softc *sc, int *needsoftp) 506 { 507 uint8_t isr0, isr1; 508 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 509 510 isr0 = SAB_READ(sc, SAB_ISR0); 511 isr1 = SAB_READ(sc, SAB_ISR1); 512 513 if (isr0 || isr1) 514 r = 1; 515 516 if (isr0 & SAB_ISR0_RPF) { 517 len = 32; 518 clearfifo = 1; 519 } 520 if (isr0 & SAB_ISR0_TCD) { 521 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 522 clearfifo = 1; 523 } 524 if (isr0 & SAB_ISR0_TIME) { 525 sabtty_cec_wait(sc); 526 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 527 } 528 if (isr0 & SAB_ISR0_RFO) { 529 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 530 clearfifo = 1; 531 } 532 if (len != 0) { 533 uint8_t *ptr, b; 534 535 ptr = sc->sc_rput; 536 for (i = 0; i < len; i++) { 537 b = SAB_READ(sc, SAB_RFIFO); 538 if (i % 2 == 0) /* skip status byte */ 539 cn_check_magic(sc->sc_tty->t_dev, 540 b, sabtty_cnm_state); 541 *ptr++ = b; 542 if (ptr == sc->sc_rend) 543 ptr = sc->sc_rbuf; 544 if (ptr == sc->sc_rget) { 545 if (ptr == sc->sc_rbuf) 546 ptr = sc->sc_rend; 547 ptr--; 548 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 549 } 550 } 551 sc->sc_rput = ptr; 552 needsoft = 1; 553 } 554 555 if (clearfifo) { 556 sabtty_cec_wait(sc); 557 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 558 } 559 560 if (isr0 & SAB_ISR0_CDSC) { 561 sc->sc_flags |= SABTTYF_CDCHG; 562 needsoft = 1; 563 } 564 565 if (isr1 & SAB_ISR1_BRKT) 566 cn_check_magic(sc->sc_tty->t_dev, 567 CNC_BREAK, sabtty_cnm_state); 568 569 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 570 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 571 (sc->sc_flags & SABTTYF_STOP) == 0) { 572 if (sc->sc_txc < 32) 573 len = sc->sc_txc; 574 else 575 len = 32; 576 577 if (len > 0) { 578 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 579 sc->sc_txp += len; 580 sc->sc_txc -= len; 581 582 sabtty_cec_wait(sc); 583 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 584 585 /* 586 * Prevent the false end of xmit from 587 * confusing things below. 588 */ 589 isr1 &= ~SAB_ISR1_ALLS; 590 } 591 } 592 593 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 594 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 595 sc->sc_imr1 |= SAB_IMR1_XPR; 596 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 597 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 598 } 599 } 600 } 601 602 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 603 (sc->sc_flags & SABTTYF_STOP))) { 604 if (sc->sc_flags & SABTTYF_TXDRAIN) 605 wakeup(sc); 606 sc->sc_flags &= ~SABTTYF_STOP; 607 sc->sc_flags |= SABTTYF_DONE; 608 sc->sc_imr1 |= SAB_IMR1_ALLS; 609 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 610 needsoft = 1; 611 } 612 613 if (needsoft) 614 *needsoftp = needsoft; 615 return (r); 616 } 617 618 void 619 sabtty_softintr(struct sabtty_softc *sc) 620 { 621 struct tty *tp = sc->sc_tty; 622 int s, flags; 623 uint8_t r; 624 625 if (tp == NULL) 626 return; 627 628 if ((tp->t_state & TS_ISOPEN) == 0) 629 return; 630 631 while (sc->sc_rget != sc->sc_rput) { 632 int data; 633 uint8_t stat; 634 635 data = sc->sc_rget[0]; 636 stat = sc->sc_rget[1]; 637 sc->sc_rget += 2; 638 if (stat & SAB_RSTAT_PE) 639 data |= TTY_PE; 640 if (stat & SAB_RSTAT_FE) 641 data |= TTY_FE; 642 if (sc->sc_rget == sc->sc_rend) 643 sc->sc_rget = sc->sc_rbuf; 644 645 (*tp->t_linesw->l_rint)(data, tp); 646 } 647 648 s = splhigh(); 649 flags = sc->sc_flags; 650 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 651 splx(s); 652 653 if (flags & SABTTYF_CDCHG) { 654 s = spltty(); 655 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 656 splx(s); 657 658 (*tp->t_linesw->l_modem)(tp, r); 659 } 660 661 if (flags & SABTTYF_RINGOVERFLOW) 662 log(LOG_WARNING, "%s: ring overflow\n", 663 device_xname(sc->sc_dev)); 664 665 if (flags & SABTTYF_DONE) { 666 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 667 tp->t_state &= ~TS_BUSY; 668 (*tp->t_linesw->l_start)(tp); 669 } 670 } 671 672 int 673 sabopen(dev_t dev, int flags, int mode, struct lwp *l) 674 { 675 struct sabtty_softc *sc; 676 struct tty *tp; 677 int s, s1; 678 679 sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 680 if (sc == NULL) 681 return (ENXIO); 682 683 tp = sc->sc_tty; 684 tp->t_dev = dev; 685 686 /* 687 * If the device is exclusively for kernel use, deny userland 688 * open. 689 */ 690 if (ISSET(tp->t_state, TS_KERN_ONLY)) 691 return (EBUSY); 692 693 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 694 return (EBUSY); 695 696 ttylock(tp); 697 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 698 ttychars(tp); 699 tp->t_iflag = TTYDEF_IFLAG; 700 tp->t_oflag = TTYDEF_OFLAG; 701 tp->t_cflag = TTYDEF_CFLAG; 702 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 703 tp->t_cflag |= CLOCAL; 704 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 705 tp->t_cflag |= CRTSCTS; 706 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 707 tp->t_cflag |= MDMBUF; 708 tp->t_lflag = TTYDEF_LFLAG; 709 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 710 711 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 712 713 ttsetwater(tp); 714 715 s1 = splhigh(); 716 sabtty_reset(sc); 717 sabtty_param(tp, &tp->t_termios); 718 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 719 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 720 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 721 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 722 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 723 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 724 sabtty_cec_wait(sc); 725 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 726 sabtty_cec_wait(sc); 727 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 728 sabtty_cec_wait(sc); 729 splx(s1); 730 731 sabtty_flush(sc); 732 733 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 734 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 735 tp->t_state |= TS_CARR_ON; 736 else 737 tp->t_state &= ~TS_CARR_ON; 738 } 739 740 if ((flags & O_NONBLOCK) == 0) { 741 while ((tp->t_cflag & CLOCAL) == 0 && 742 (tp->t_state & TS_CARR_ON) == 0) { 743 int error; 744 745 error = ttysleep(tp, &tp->t_rawcv, true, 0); 746 if (error != 0) { 747 ttyunlock(tp); 748 return (error); 749 } 750 } 751 } 752 753 ttyunlock(tp); 754 755 s = (*tp->t_linesw->l_open)(dev, tp); 756 if (s != 0) { 757 ttylock(tp); 758 if (tp->t_state & TS_ISOPEN) { 759 ttyunlock(tp); 760 return (s); 761 } 762 if (tp->t_cflag & HUPCL) { 763 sabtty_mdmctrl(sc, 0, DMSET); 764 ttysleep(tp, NULL, /*catch_p*/false, hz); 765 } 766 767 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 768 /* Flush and power down if we're not the console */ 769 sabtty_flush(sc); 770 sabtty_reset(sc); 771 } 772 ttyunlock(tp); 773 } 774 return (s); 775 } 776 777 int 778 sabclose(dev_t dev, int flags, int mode, struct lwp *l) 779 { 780 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 781 struct sab_softc *bc = sc->sc_parent; 782 struct tty *tp = sc->sc_tty; 783 int s; 784 785 (*tp->t_linesw->l_close)(tp, flags); 786 787 s = spltty(); 788 789 if ((tp->t_state & TS_ISOPEN) == 0) { 790 /* Wait for output drain */ 791 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 792 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 793 sc->sc_flags |= SABTTYF_TXDRAIN; 794 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 795 sc->sc_imr1 |= SAB_IMR1_ALLS; 796 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 797 sc->sc_flags &= ~SABTTYF_TXDRAIN; 798 799 if (tp->t_cflag & HUPCL) { 800 sabtty_mdmctrl(sc, 0, DMSET); 801 (void)tsleep(bc, TTIPRI, ttclos, hz); 802 } 803 804 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 805 /* Flush and power down if we're not the console */ 806 sabtty_flush(sc); 807 sabtty_reset(sc); 808 } 809 } 810 811 ttyclose(tp); 812 splx(s); 813 814 return (0); 815 } 816 817 int 818 sabread(dev_t dev, struct uio *uio, int flags) 819 { 820 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 821 struct tty *tp = sc->sc_tty; 822 823 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 824 } 825 826 int 827 sabwrite(dev_t dev, struct uio *uio, int flags) 828 { 829 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 830 struct tty *tp = sc->sc_tty; 831 832 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 833 } 834 835 int 836 sabioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 837 { 838 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 839 struct tty *tp = sc->sc_tty; 840 int error; 841 842 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 843 if (error >= 0) 844 return (error); 845 846 error = ttioctl(tp, cmd, data, flags, l); 847 if (error >= 0) 848 return (error); 849 850 error = 0; 851 852 switch (cmd) { 853 case TIOCSBRK: 854 SAB_WRITE(sc, SAB_DAFO, 855 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 856 break; 857 case TIOCCBRK: 858 SAB_WRITE(sc, SAB_DAFO, 859 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 860 break; 861 case TIOCSDTR: 862 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 863 break; 864 case TIOCCDTR: 865 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 866 break; 867 case TIOCMBIS: 868 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 869 break; 870 case TIOCMBIC: 871 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 872 break; 873 case TIOCMGET: 874 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 875 break; 876 case TIOCMSET: 877 sabtty_mdmctrl(sc, *((int *)data), DMSET); 878 break; 879 case TIOCGFLAGS: 880 *((int *)data) = sc->sc_openflags; 881 break; 882 case TIOCSFLAGS: 883 if (kauth_authorize_device_tty(l->l_cred, 884 KAUTH_DEVICE_TTY_PRIVSET, tp)) 885 error = EPERM; 886 else 887 sc->sc_openflags = *((int *)data) & 888 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 889 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 890 break; 891 default: 892 error = ENOTTY; 893 } 894 895 return (error); 896 } 897 898 struct tty * 899 sabtty(dev_t dev) 900 { 901 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 902 903 return (sc->sc_tty); 904 } 905 906 void 907 sabstop(struct tty *tp, int flag) 908 { 909 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 910 int s; 911 912 s = spltty(); 913 if (tp->t_state & TS_BUSY) { 914 if ((tp->t_state & TS_TTSTOP) == 0) 915 tp->t_state |= TS_FLUSH; 916 sc->sc_flags |= SABTTYF_STOP; 917 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 918 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 919 } 920 splx(s); 921 } 922 923 int 924 sabpoll(dev_t dev, int events, struct lwp *l) 925 { 926 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 927 struct tty *tp = sc->sc_tty; 928 929 return ((*tp->t_linesw->l_poll)(tp, events, l)); 930 } 931 932 int 933 sabtty_mdmctrl(struct sabtty_softc *sc, int bits, int how) 934 { 935 uint8_t r; 936 int s; 937 938 s = spltty(); 939 switch (how) { 940 case DMGET: 941 bits = 0; 942 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 943 bits |= TIOCM_CTS; 944 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 945 bits |= TIOCM_CD; 946 947 r = SAB_READ(sc, SAB_PVR); 948 if ((r & sc->sc_pvr_dtr) == 0) 949 bits |= TIOCM_DTR; 950 if ((r & sc->sc_pvr_dsr) == 0) 951 bits |= TIOCM_DSR; 952 953 r = SAB_READ(sc, SAB_MODE); 954 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 955 bits |= TIOCM_RTS; 956 break; 957 case DMSET: 958 r = SAB_READ(sc, SAB_MODE); 959 if (bits & TIOCM_RTS) { 960 r &= ~SAB_MODE_FRTS; 961 r |= SAB_MODE_RTS; 962 } else 963 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 964 SAB_WRITE(sc, SAB_MODE, r); 965 966 r = SAB_READ(sc, SAB_PVR); 967 if (bits & TIOCM_DTR) 968 r &= ~sc->sc_pvr_dtr; 969 else 970 r |= sc->sc_pvr_dtr; 971 SAB_WRITE(sc, SAB_PVR, r); 972 break; 973 case DMBIS: 974 if (bits & TIOCM_RTS) { 975 r = SAB_READ(sc, SAB_MODE); 976 r &= ~SAB_MODE_FRTS; 977 r |= SAB_MODE_RTS; 978 SAB_WRITE(sc, SAB_MODE, r); 979 } 980 if (bits & TIOCM_DTR) { 981 r = SAB_READ(sc, SAB_PVR); 982 r &= ~sc->sc_pvr_dtr; 983 SAB_WRITE(sc, SAB_PVR, r); 984 } 985 break; 986 case DMBIC: 987 if (bits & TIOCM_RTS) { 988 r = SAB_READ(sc, SAB_MODE); 989 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 990 SAB_WRITE(sc, SAB_MODE, r); 991 } 992 if (bits & TIOCM_DTR) { 993 r = SAB_READ(sc, SAB_PVR); 994 r |= sc->sc_pvr_dtr; 995 SAB_WRITE(sc, SAB_PVR, r); 996 } 997 break; 998 } 999 splx(s); 1000 return (bits); 1001 } 1002 1003 int 1004 sabttyparam(struct sabtty_softc *sc, struct tty *tp, struct termios *t) 1005 { 1006 int s, ospeed; 1007 tcflag_t cflag; 1008 uint8_t dafo, r; 1009 1010 ospeed = sabtty_speed(t->c_ospeed); 1011 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1012 return (EINVAL); 1013 1014 s = spltty(); 1015 1016 /* hang up line if ospeed is zero, otherwise raise dtr */ 1017 sabtty_mdmctrl(sc, TIOCM_DTR, 1018 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1019 1020 dafo = SAB_READ(sc, SAB_DAFO); 1021 1022 cflag = t->c_cflag; 1023 1024 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1025 cflag |= CLOCAL; 1026 cflag &= ~HUPCL; 1027 } 1028 1029 if (cflag & CSTOPB) 1030 dafo |= SAB_DAFO_STOP; 1031 else 1032 dafo &= ~SAB_DAFO_STOP; 1033 1034 dafo &= ~SAB_DAFO_CHL_CSIZE; 1035 switch (cflag & CSIZE) { 1036 case CS5: 1037 dafo |= SAB_DAFO_CHL_CS5; 1038 break; 1039 case CS6: 1040 dafo |= SAB_DAFO_CHL_CS6; 1041 break; 1042 case CS7: 1043 dafo |= SAB_DAFO_CHL_CS7; 1044 break; 1045 default: 1046 dafo |= SAB_DAFO_CHL_CS8; 1047 break; 1048 } 1049 1050 dafo &= ~SAB_DAFO_PARMASK; 1051 if (cflag & PARENB) { 1052 if (cflag & PARODD) 1053 dafo |= SAB_DAFO_PAR_ODD; 1054 else 1055 dafo |= SAB_DAFO_PAR_EVEN; 1056 } else 1057 dafo |= SAB_DAFO_PAR_NONE; 1058 SAB_WRITE(sc, SAB_DAFO, dafo); 1059 1060 if (!(sc->sc_flags & SABTTYF_IS_RSC) && ospeed != 0) { 1061 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1062 r = SAB_READ(sc, SAB_CCR2); 1063 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1064 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1065 SAB_WRITE(sc, SAB_CCR2, r); 1066 } 1067 1068 r = SAB_READ(sc, SAB_MODE); 1069 r |= SAB_MODE_RAC; 1070 if (cflag & CRTSCTS) { 1071 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1072 r |= SAB_MODE_FRTS; 1073 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1074 } else { 1075 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1076 r &= ~SAB_MODE_FRTS; 1077 sc->sc_imr1 |= SAB_IMR1_CSC; 1078 } 1079 SAB_WRITE(sc, SAB_MODE, r); 1080 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1081 1082 tp->t_cflag = cflag; 1083 1084 splx(s); 1085 return (0); 1086 } 1087 1088 int 1089 sabtty_param(struct tty *tp, struct termios *t) 1090 { 1091 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 1092 1093 return (sabttyparam(sc, tp, t)); 1094 } 1095 1096 void 1097 sabtty_start(struct tty *tp) 1098 { 1099 struct sabtty_softc *sc = device_lookup_private(&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 (ttypull(tp)) { 1105 sc->sc_txc = ndqb(&tp->t_outq, 0); 1106 sc->sc_txp = tp->t_outq.c_cf; 1107 tp->t_state |= TS_BUSY; 1108 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1109 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1110 } 1111 } 1112 splx(s); 1113 } 1114 1115 void 1116 sabtty_cec_wait(struct sabtty_softc *sc) 1117 { 1118 int i = 50000; 1119 1120 for (;;) { 1121 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1122 return; 1123 if (--i == 0) 1124 break; 1125 DELAY(1); 1126 } 1127 } 1128 1129 void 1130 sabtty_tec_wait(struct sabtty_softc *sc) 1131 { 1132 int i = 200000; 1133 1134 for (;;) { 1135 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1136 return; 1137 if (--i == 0) 1138 break; 1139 DELAY(1); 1140 } 1141 } 1142 1143 void 1144 sabtty_reset(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 | SAB_CCR4_ICD); 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 (void)SAB_READ(sc, SAB_ISR0); 1165 (void)SAB_READ(sc, SAB_ISR1); 1166 } 1167 1168 void 1169 sabtty_flush(struct sabtty_softc *sc) 1170 { 1171 /* clear rx fifo */ 1172 sabtty_cec_wait(sc); 1173 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1174 1175 /* clear tx fifo */ 1176 sabtty_cec_wait(sc); 1177 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1178 } 1179 1180 int 1181 sabtty_speed(int rate) 1182 { 1183 int i, len, r; 1184 1185 if (rate == 0) 1186 return (0); 1187 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1188 for (i = 0; i < len; i++) { 1189 if (rate == sabtty_baudtable[i].baud) { 1190 r = sabtty_baudtable[i].n | 1191 (sabtty_baudtable[i].m << 6); 1192 return (r); 1193 } 1194 } 1195 return (-1); 1196 } 1197 1198 void 1199 sabtty_cnputc(struct sabtty_softc *sc, int c) 1200 { 1201 sabtty_tec_wait(sc); 1202 SAB_WRITE(sc, SAB_TIC, c); 1203 sabtty_tec_wait(sc); 1204 } 1205 1206 int 1207 sabtty_cngetc(struct sabtty_softc *sc) 1208 { 1209 uint8_t r, len; 1210 1211 again: 1212 do { 1213 r = SAB_READ(sc, SAB_STAR); 1214 } while ((r & SAB_STAR_RFNE) == 0); 1215 1216 /* 1217 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1218 * (I hate this chip... hate hate hate). 1219 */ 1220 sabtty_cec_wait(sc); 1221 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1222 1223 /* Wait for RFIFO to come ready */ 1224 do { 1225 r = SAB_READ(sc, SAB_ISR0); 1226 } while ((r & SAB_ISR0_TCD) == 0); 1227 1228 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1229 if (len == 0) 1230 goto again; /* Shouldn't happen... */ 1231 1232 r = SAB_READ(sc, SAB_RFIFO); 1233 1234 /* 1235 * Blow away everything left in the FIFO... 1236 */ 1237 sabtty_cec_wait(sc); 1238 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1239 return (r); 1240 } 1241 1242 void 1243 sabtty_cnpollc(struct sabtty_softc *sc, int on) 1244 { 1245 uint8_t r; 1246 1247 if (on) { 1248 if (sc->sc_polling) 1249 return; 1250 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1251 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1252 r &= ~(SAB_RFC_RFDF); 1253 SAB_WRITE(sc, SAB_RFC, r); 1254 sabtty_cec_wait(sc); 1255 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1256 sc->sc_polling = 1; 1257 } else { 1258 if (!sc->sc_polling) 1259 return; 1260 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1261 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1262 sabtty_cec_wait(sc); 1263 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1264 sc->sc_polling = 0; 1265 } 1266 } 1267 1268 void 1269 sab_cnputc(dev_t dev, int c) 1270 { 1271 struct sabtty_softc *sc = sabtty_cons_output; 1272 1273 if (sc == NULL) 1274 return; 1275 sabtty_cnputc(sc, c); 1276 } 1277 1278 void 1279 sab_cnpollc(dev_t dev, int on) 1280 { 1281 struct sabtty_softc *sc = sabtty_cons_input; 1282 1283 sabtty_cnpollc(sc, on); 1284 } 1285 1286 int 1287 sab_cngetc(dev_t dev) 1288 { 1289 struct sabtty_softc *sc = sabtty_cons_input; 1290 1291 if (sc == NULL) 1292 return (-1); 1293 return (sabtty_cngetc(sc)); 1294 } 1295 1296 void 1297 sabtty_console_flags(struct sabtty_softc *sc) 1298 { 1299 int node, channel, cookie; 1300 char buf[255]; 1301 1302 node = sc->sc_parent->sc_node; 1303 channel = sc->sc_portno; 1304 1305 /* Default to channel 0 if there are no explicit prom args */ 1306 cookie = 0; 1307 1308 if (node == prom_instance_to_package(prom_stdin())) { 1309 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1310 strcmp("ttyb", buf) == 0) 1311 cookie = 1; 1312 1313 if (channel == cookie) 1314 sc->sc_flags |= SABTTYF_CONS_IN; 1315 } 1316 1317 /* Default to same channel if there are no explicit prom args */ 1318 1319 if (node == prom_instance_to_package(prom_stdout())) { 1320 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1321 strcmp("ttyb", buf) == 0) 1322 cookie = 1; 1323 1324 if (channel == cookie) 1325 sc->sc_flags |= SABTTYF_CONS_OUT; 1326 } 1327 /* Are we connected to an E250 RSC? */ 1328 if (channel == prom_getpropint(node, "ssp-console", -1) || 1329 channel == prom_getpropint(node, "ssp-control", -1)) 1330 sc->sc_flags |= SABTTYF_IS_RSC; 1331 } 1332 1333 bool 1334 sabtty_shutdown(device_t dev, int how) 1335 { 1336 struct sabtty_softc *sc = device_private(dev); 1337 1338 /* Have to put the chip back into single char mode */ 1339 sc->sc_flags |= SABTTYF_DONTDDB; 1340 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1341 sabtty_cec_wait(sc); 1342 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1343 sabtty_cec_wait(sc); 1344 return true; 1345 } 1346 1347 #ifdef KGDB 1348 static int 1349 sab_kgdb_getc(void *arg) 1350 { 1351 struct sabtty_softc *sc = arg; 1352 1353 return sabtty_cngetc(sc); 1354 } 1355 1356 static void 1357 sab_kgdb_putc(void *arg, int c) 1358 { 1359 struct sabtty_softc *sc = arg; 1360 1361 return sabtty_cnputc(sc, c); 1362 } 1363 1364 #ifndef KGDB_DEVRATE 1365 #define KGDB_DEVRATE 9600 1366 #endif 1367 1368 int 1369 sab_kgdb_check(struct sabtty_softc *sc) 1370 { 1371 return strcmp(device_xname(sc->sc_dev), KGDB_DEVNAME) == 0; 1372 } 1373 1374 void 1375 sab_kgdb_init(struct sabtty_softc *sc) 1376 { 1377 int sp; 1378 uint8_t dafo, r; 1379 extern int kgdb_break_at_attach; 1380 1381 kgdb_attach(sab_kgdb_getc, sab_kgdb_putc, sc); 1382 kgdb_dev = 123; /* not used, but checked against NODEV */ 1383 1384 /* 1385 * Configure the port to speed/8n1 1386 */ 1387 dafo = SAB_READ(sc, SAB_DAFO); 1388 dafo &= ~(SAB_DAFO_STOP|SAB_DAFO_CHL_CSIZE|SAB_DAFO_PARMASK); 1389 dafo |= SAB_DAFO_CHL_CS8|SAB_DAFO_PAR_NONE; 1390 SAB_WRITE(sc, SAB_DAFO, dafo); 1391 sp = sabtty_speed(KGDB_DEVRATE); 1392 SAB_WRITE(sc, SAB_BGR, sp & 0xff); 1393 r = SAB_READ(sc, SAB_CCR2); 1394 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1395 r |= (sp >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1396 SAB_WRITE(sc, SAB_CCR2, r); 1397 1398 /* 1399 * If we are booting with -d, break into kgdb now 1400 */ 1401 if (kgdb_break_at_attach) 1402 kgdb_connect(1); 1403 } 1404 #endif 1405
Indexes created Tue Sep 23 23:09:58 GMT 2025