Annotation of sys/arch/sparc64/dev/pcons.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pcons.c,v 1.11 2007/06/29 04:32:39 deraadt Exp $ */
! 2: /* $NetBSD: pcons.c,v 1.7 2001/05/02 10:32:20 scw Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000 Eduardo E. Horvath
! 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. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
! 24: * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
! 25: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
! 26: * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
! 27: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 29: * SUCH DAMAGE.
! 30: */
! 31:
! 32: /*
! 33: * Default console driver. Uses the PROM or whatever
! 34: * driver(s) are appropriate.
! 35: */
! 36:
! 37: #include <sys/param.h>
! 38: #include <sys/systm.h>
! 39: #include <sys/conf.h>
! 40: #include <sys/device.h>
! 41: #include <sys/file.h>
! 42: #include <sys/ioctl.h>
! 43: #include <sys/kernel.h>
! 44: #include <sys/proc.h>
! 45: #include <sys/tty.h>
! 46: #include <sys/time.h>
! 47: #include <sys/syslog.h>
! 48:
! 49: #include <machine/autoconf.h>
! 50: #include <machine/openfirm.h>
! 51: #include <machine/bsd_openprom.h>
! 52: #include <machine/conf.h>
! 53: #include <machine/cpu.h>
! 54: #include <machine/eeprom.h>
! 55: #include <machine/psl.h>
! 56:
! 57: #include <dev/cons.h>
! 58:
! 59: #include "wsdisplay.h"
! 60:
! 61: #if NWSDISPLAY > 0
! 62: #include <dev/wscons/wsconsio.h>
! 63: #include <dev/wscons/wsdisplayvar.h>
! 64: #endif
! 65:
! 66: struct pconssoftc {
! 67: struct device of_dev;
! 68:
! 69: #if NWSDISPLAY > 0
! 70: int sc_wsdisplay;
! 71: u_int sc_nscreens;
! 72: #endif
! 73:
! 74: struct tty *of_tty;
! 75: struct timeout sc_poll_to;
! 76: int of_flags;
! 77: };
! 78: /* flags: */
! 79: #define OFPOLL 1
! 80:
! 81: #define OFBURSTLEN 128 /* max number of bytes to write in one chunk */
! 82:
! 83: /* XXXXXXXX - this is in MI code in NetBSD */
! 84: /*
! 85: * Stuff to handle debugger magic key sequences.
! 86: */
! 87: #define CNS_LEN 128
! 88: #define CNS_MAGIC_VAL(x) ((x)&0x1ff)
! 89: #define CNS_MAGIC_NEXT(x) (((x)>>9)&0x7f)
! 90: #define CNS_TERM 0x7f /* End of sequence */
! 91:
! 92: typedef struct cnm_state {
! 93: int cnm_state;
! 94: u_short *cnm_magic;
! 95: } cnm_state_t;
! 96: #ifdef DDB
! 97: #include <ddb/db_var.h>
! 98: #define cn_trap() do { if (db_console) Debugger(); } while (0)
! 99: #else
! 100: #define cn_trap()
! 101: #endif
! 102: #define cn_isconsole(d) ((d) == cn_tab->cn_dev)
! 103: void cn_init_magic(cnm_state_t *cnm);
! 104: void cn_destroy_magic(cnm_state_t *cnm);
! 105: int cn_set_magic(char *magic);
! 106: int cn_get_magic(char *magic, int len);
! 107: /* This should be called for each byte read */
! 108: #ifndef cn_check_magic
! 109: #define cn_check_magic(d, k, s) \
! 110: do { \
! 111: if (cn_isconsole(d)) { \
! 112: int v = (s).cnm_magic[(s).cnm_state]; \
! 113: if ((k) == CNS_MAGIC_VAL(v)) { \
! 114: (s).cnm_state = CNS_MAGIC_NEXT(v); \
! 115: if ((s).cnm_state == CNS_TERM) { \
! 116: cn_trap(); \
! 117: (s).cnm_state = 0; \
! 118: } \
! 119: } else { \
! 120: (s).cnm_state = 0; \
! 121: } \
! 122: } \
! 123: } while (/* CONSTCOND */ 0)
! 124: #endif
! 125:
! 126: /* Encode out-of-band events this way when passing to cn_check_magic() */
! 127: #define CNC_BREAK 0x100
! 128:
! 129: /* XXXXXXXXXX - end of this part of cnmagic, more at the end of this file. */
! 130:
! 131: #include <sparc64/dev/cons.h>
! 132:
! 133: int pconsmatch(struct device *, void *, void *);
! 134: void pconsattach(struct device *, struct device *, void *);
! 135:
! 136: struct cfattach pcons_ca = {
! 137: sizeof(struct pconssoftc), pconsmatch, pconsattach
! 138: };
! 139:
! 140: struct cfdriver pcons_cd = {
! 141: NULL, "pcons", DV_TTY
! 142: };
! 143:
! 144: extern struct cfdriver pcons_cd;
! 145: static struct cnm_state pcons_cnm_state;
! 146:
! 147: static int pconsprobe(void);
! 148: static void pcons_wsdisplay_init(struct pconssoftc *);
! 149: extern struct consdev *cn_tab;
! 150:
! 151: cons_decl(prom_);
! 152:
! 153: int
! 154: pconsmatch(parent, match, aux)
! 155: struct device *parent;
! 156: void *match;
! 157: void *aux;
! 158: {
! 159: struct mainbus_attach_args *ma = aux;
! 160:
! 161: /* Only attach if no other console has attached. */
! 162: return (strcmp("pcons", ma->ma_name) == 0 &&
! 163: cn_tab->cn_getc == prom_cngetc);
! 164: }
! 165:
! 166: void pcons_poll(void *);
! 167:
! 168: void
! 169: pconsattach(parent, self, aux)
! 170: struct device *parent, *self;
! 171: void *aux;
! 172: {
! 173: struct pconssoftc *sc = (struct pconssoftc *) self;
! 174: #if NWSDISPLAY > 0
! 175: char buffer[128];
! 176: extern struct consdev wsdisplay_cons;
! 177: extern int wsdisplay_getc_dummy(dev_t);
! 178: #endif
! 179:
! 180: printf("\n");
! 181: if (!pconsprobe())
! 182: return;
! 183:
! 184: #if NWSDISPLAY > 0
! 185: /*
! 186: * Attach a dumb wsdisplay device if a wscons input driver has
! 187: * registered as the console, or is about to do so (usb keyboards).
! 188: */
! 189: if (wsdisplay_cons.cn_getc != wsdisplay_getc_dummy)
! 190: sc->sc_wsdisplay = 1;
! 191: else {
! 192: if (OF_getprop(OF_instance_to_package(stdin), "compatible",
! 193: buffer, sizeof(buffer)) != -1 &&
! 194: strncmp("usb", buffer, 3) == 0)
! 195: sc->sc_wsdisplay = 1;
! 196: }
! 197:
! 198: if (sc->sc_wsdisplay != 0) {
! 199: pcons_wsdisplay_init(sc);
! 200: return;
! 201: }
! 202: #endif
! 203: cn_init_magic(&pcons_cnm_state);
! 204: cn_set_magic("+++++");
! 205: timeout_set(&sc->sc_poll_to, pcons_poll, sc);
! 206: }
! 207:
! 208: void pconsstart(struct tty *);
! 209: int pconsparam(struct tty *, struct termios *);
! 210:
! 211: int
! 212: pconsopen(dev, flag, mode, p)
! 213: dev_t dev;
! 214: int flag, mode;
! 215: struct proc *p;
! 216: {
! 217: struct pconssoftc *sc;
! 218: int unit = minor(dev);
! 219: struct tty *tp;
! 220:
! 221: if (unit >= pcons_cd.cd_ndevs)
! 222: return ENXIO;
! 223: sc = pcons_cd.cd_devs[unit];
! 224: if (!sc)
! 225: return ENXIO;
! 226: #if NWSDISPLAY > 0
! 227: if (sc->sc_wsdisplay != 0)
! 228: return ENXIO;
! 229: #endif
! 230: if (!(tp = sc->of_tty)) {
! 231: sc->of_tty = tp = ttymalloc();
! 232: }
! 233: tp->t_oproc = pconsstart;
! 234: tp->t_param = pconsparam;
! 235: tp->t_dev = dev;
! 236: cn_tab->cn_dev = dev;
! 237: if (!(tp->t_state & TS_ISOPEN)) {
! 238: ttychars(tp);
! 239: tp->t_iflag = TTYDEF_IFLAG;
! 240: tp->t_oflag = TTYDEF_OFLAG;
! 241: tp->t_cflag = TTYDEF_CFLAG;
! 242: tp->t_lflag = TTYDEF_LFLAG;
! 243: tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
! 244: pconsparam(tp, &tp->t_termios);
! 245: ttsetwater(tp);
! 246: } else if ((tp->t_state & TS_XCLUDE) && suser(p, 0))
! 247: return EBUSY;
! 248: tp->t_state |= TS_CARR_ON;
! 249:
! 250: if (!(sc->of_flags & OFPOLL)) {
! 251: sc->of_flags |= OFPOLL;
! 252: timeout_add(&sc->sc_poll_to, 1);
! 253: }
! 254:
! 255: return (*linesw[tp->t_line].l_open)(dev, tp);
! 256: }
! 257:
! 258: int
! 259: pconsclose(dev, flag, mode, p)
! 260: dev_t dev;
! 261: int flag, mode;
! 262: struct proc *p;
! 263: {
! 264: struct pconssoftc *sc = pcons_cd.cd_devs[minor(dev)];
! 265: struct tty *tp = sc->of_tty;
! 266:
! 267: timeout_del(&sc->sc_poll_to);
! 268: sc->of_flags &= ~OFPOLL;
! 269: (*linesw[tp->t_line].l_close)(tp, flag);
! 270: ttyclose(tp);
! 271: return 0;
! 272: }
! 273:
! 274: int
! 275: pconsread(dev, uio, flag)
! 276: dev_t dev;
! 277: struct uio *uio;
! 278: int flag;
! 279: {
! 280: struct pconssoftc *sc = pcons_cd.cd_devs[minor(dev)];
! 281: struct tty *tp = sc->of_tty;
! 282:
! 283: return (*linesw[tp->t_line].l_read)(tp, uio, flag);
! 284: }
! 285:
! 286: int
! 287: pconswrite(dev, uio, flag)
! 288: dev_t dev;
! 289: struct uio *uio;
! 290: int flag;
! 291: {
! 292: struct pconssoftc *sc = pcons_cd.cd_devs[minor(dev)];
! 293: struct tty *tp = sc->of_tty;
! 294:
! 295: return (*linesw[tp->t_line].l_write)(tp, uio, flag);
! 296: }
! 297:
! 298: int
! 299: pconsioctl(dev, cmd, data, flag, p)
! 300: dev_t dev;
! 301: u_long cmd;
! 302: caddr_t data;
! 303: int flag;
! 304: struct proc *p;
! 305: {
! 306: struct pconssoftc *sc = pcons_cd.cd_devs[minor(dev)];
! 307: struct tty *tp = sc->of_tty;
! 308: int error;
! 309:
! 310: if ((error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p)) >= 0)
! 311: return error;
! 312: if ((error = ttioctl(tp, cmd, data, flag, p)) >= 0)
! 313: return error;
! 314: return ENOTTY;
! 315: }
! 316:
! 317: struct tty *
! 318: pconstty(dev)
! 319: dev_t dev;
! 320: {
! 321: struct pconssoftc *sc = pcons_cd.cd_devs[minor(dev)];
! 322:
! 323: return sc->of_tty;
! 324: }
! 325:
! 326: int
! 327: pconsstop(tp, flag)
! 328: struct tty *tp;
! 329: int flag;
! 330: {
! 331: return 0;
! 332: }
! 333:
! 334: void
! 335: pconsstart(tp)
! 336: struct tty *tp;
! 337: {
! 338: struct clist *cl;
! 339: int s, len;
! 340: u_char buf[OFBURSTLEN];
! 341:
! 342: s = spltty();
! 343: if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
! 344: splx(s);
! 345: return;
! 346: }
! 347: tp->t_state |= TS_BUSY;
! 348: splx(s);
! 349: cl = &tp->t_outq;
! 350: len = q_to_b(cl, buf, OFBURSTLEN);
! 351: OF_write(stdout, buf, len);
! 352: s = spltty();
! 353: tp->t_state &= ~TS_BUSY;
! 354: if (cl->c_cc) {
! 355: tp->t_state |= TS_TIMEOUT;
! 356: timeout_add(&tp->t_rstrt_to, 1);
! 357: }
! 358: if (cl->c_cc <= tp->t_lowat) {
! 359: if (tp->t_state & TS_ASLEEP) {
! 360: tp->t_state &= ~TS_ASLEEP;
! 361: wakeup(cl);
! 362: }
! 363: selwakeup(&tp->t_wsel);
! 364: }
! 365: splx(s);
! 366: }
! 367:
! 368: int
! 369: pconsparam(tp, t)
! 370: struct tty *tp;
! 371: struct termios *t;
! 372: {
! 373: tp->t_ispeed = t->c_ispeed;
! 374: tp->t_ospeed = t->c_ospeed;
! 375: tp->t_cflag = t->c_cflag;
! 376: return 0;
! 377: }
! 378:
! 379: void
! 380: pcons_poll(aux)
! 381: void *aux;
! 382: {
! 383: struct pconssoftc *sc = aux;
! 384: struct tty *tp = sc->of_tty;
! 385: char ch;
! 386:
! 387: while (OF_read(stdin, &ch, 1) > 0) {
! 388: cn_check_magic(tp->t_dev, ch, pcons_cnm_state);
! 389: if (tp && (tp->t_state & TS_ISOPEN)) {
! 390: if (ch == '\b')
! 391: ch = '\177';
! 392: (*linesw[tp->t_line].l_rint)(ch, tp);
! 393: }
! 394: }
! 395: timeout_add(&sc->sc_poll_to, 1);
! 396: }
! 397:
! 398: int
! 399: pconsprobe()
! 400: {
! 401: if (!stdin) stdin = OF_stdin();
! 402: if (!stdout) stdout = OF_stdout();
! 403:
! 404: return (stdin && stdout);
! 405: }
! 406:
! 407: void
! 408: pcons_cnpollc(dev, on)
! 409: dev_t dev;
! 410: int on;
! 411: {
! 412: struct pconssoftc *sc = NULL;
! 413:
! 414: if (pcons_cd.cd_devs)
! 415: sc = pcons_cd.cd_devs[minor(dev)];
! 416:
! 417: if (sc == NULL)
! 418: return;
! 419:
! 420: if (on) {
! 421: if (sc->of_flags & OFPOLL)
! 422: timeout_del(&sc->sc_poll_to);
! 423: sc->of_flags &= ~OFPOLL;
! 424: } else {
! 425: /* Resuming kernel. */
! 426: if (!(sc->of_flags & OFPOLL)) {
! 427: sc->of_flags |= OFPOLL;
! 428: timeout_add(&sc->sc_poll_to, 1);
! 429: }
! 430: }
! 431: }
! 432:
! 433: /* XXXXXXXX --- more cnmagic stuff. */
! 434: #define ENCODE_STATE(c, n) (short)(((c)&0x1ff)|(((n)&0x7f)<<9))
! 435:
! 436: static unsigned short cn_magic[CNS_LEN];
! 437:
! 438: /*
! 439: * Initialize a cnm_state_t.
! 440: */
! 441: void
! 442: cn_init_magic(cnm_state_t *cnm)
! 443: {
! 444: cnm->cnm_state = 0;
! 445: cnm->cnm_magic = cn_magic;
! 446: }
! 447:
! 448: /*
! 449: * Destroy a cnm_state_t.
! 450: */
! 451: void
! 452: cn_destroy_magic(cnm_state_t *cnm)
! 453: {
! 454: cnm->cnm_state = 0;
! 455: cnm->cnm_magic = NULL;
! 456: }
! 457:
! 458: /*
! 459: * Translate a magic string to a state
! 460: * machine table.
! 461: */
! 462: int
! 463: cn_set_magic(char *magic)
! 464: {
! 465: unsigned int i, c, n;
! 466: unsigned short m[CNS_LEN];
! 467:
! 468: for (i=0; i<CNS_LEN; i++) {
! 469: c = (*magic++)&0xff;
! 470: n = *magic ? i+1 : CNS_TERM;
! 471: switch (c) {
! 472: case 0:
! 473: /* End of string */
! 474: if (i == 0) {
! 475: /* empty string? */
! 476: cn_magic[0] = 0;
! 477: #ifdef DEBUG
! 478: printf("cn_set_magic(): empty!\n");
! 479: #endif
! 480: return (0);
! 481: }
! 482: do {
! 483: cn_magic[i] = m[i];
! 484: } while (i--);
! 485: return(0);
! 486: case 0x27:
! 487: /* Escape sequence */
! 488: c = (*magic++)&0xff;
! 489: n = *magic ? i+1 : CNS_TERM;
! 490: switch (c) {
! 491: case 0x27:
! 492: break;
! 493: case 0x01:
! 494: /* BREAK */
! 495: c = CNC_BREAK;
! 496: break;
! 497: case 0x02:
! 498: /* NUL */
! 499: c = 0;
! 500: break;
! 501: }
! 502: /* FALLTHROUGH */
! 503: default:
! 504: /* Transition to the next state. */
! 505: #ifdef DEBUG
! 506: if (!cold)
! 507: printf("mag %d %x:%x\n", i, c, n);
! 508: #endif
! 509: m[i] = ENCODE_STATE(c, n);
! 510: break;
! 511: }
! 512: }
! 513: return (EINVAL);
! 514: }
! 515:
! 516: /*
! 517: * Translate a state machine table back to
! 518: * a magic string.
! 519: */
! 520: int
! 521: cn_get_magic(char *magic, int maglen) {
! 522: unsigned int i, c;
! 523:
! 524: for (i=0; i<CNS_LEN; i++) {
! 525: c = cn_magic[i];
! 526: /* Translate a character */
! 527: switch (CNS_MAGIC_VAL(c)) {
! 528: case CNC_BREAK:
! 529: *magic++ = 0x27;
! 530: *magic++ = 0x01;
! 531: break;
! 532: case 0:
! 533: *magic++ = 0x27;
! 534: *magic++ = 0x02;
! 535: break;
! 536: case 0x27:
! 537: *magic++ = 0x27;
! 538: *magic++ = 0x27;
! 539: break;
! 540: default:
! 541: *magic++ = (c&0x0ff);
! 542: break;
! 543: }
! 544: /* Now go to the next state */
! 545: i = CNS_MAGIC_NEXT(c);
! 546: if (i == CNS_TERM || i == 0) {
! 547: /* Either termination state or empty machine */
! 548: *magic++ = 0;
! 549: return (0);
! 550: }
! 551: }
! 552: return (EINVAL);
! 553: }
! 554:
! 555: #if NWSDISPLAY > 0
! 556:
! 557: int pcons_alloc_screen(void *, const struct wsscreen_descr *, void **,
! 558: int *, int *, long *);
! 559: void pcons_cursor(void *, int, int, int);
! 560: void pcons_free_screen(void *, void *);
! 561: int pcons_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 562: int pcons_mapchar(void *, int, unsigned int *);
! 563: paddr_t pcons_mmap(void *, off_t, int);
! 564: void pcons_putchar(void *, int, int, u_int, long);
! 565: int pcons_show_screen(void *, void *, int, void (*)(void *, int, int),
! 566: void *);
! 567:
! 568: struct wsdisplay_emulops pcons_emulops = {
! 569: NULL,
! 570: pcons_mapchar,
! 571: pcons_putchar
! 572: };
! 573:
! 574: struct wsscreen_descr pcons_stdscreen = {
! 575: "dumb", 80, 34, &pcons_emulops, 12, 22, 0
! 576: };
! 577:
! 578: const struct wsscreen_descr *pcons_scrlist[] = {
! 579: &pcons_stdscreen
! 580: };
! 581:
! 582: struct wsscreen_list pcons_screenlist = {
! 583: 1, pcons_scrlist
! 584: };
! 585:
! 586: struct wsdisplay_accessops pcons_accessops = {
! 587: pcons_ioctl,
! 588: pcons_mmap,
! 589: pcons_alloc_screen,
! 590: pcons_free_screen,
! 591: pcons_show_screen
! 592: };
! 593:
! 594: int
! 595: pcons_alloc_screen(void *v, const struct wsscreen_descr *typ, void **cookiep,
! 596: int *curxp, int *curyp, long *attrp)
! 597: {
! 598: struct pconssoftc *sc = v;
! 599: int *rowp, *colp;
! 600: int row, col;
! 601:
! 602: if (sc->sc_nscreens > 0)
! 603: return (ENOMEM);
! 604:
! 605: row = col = 0;
! 606: if (romgetcursoraddr(&rowp, &colp) == 0) {
! 607: if (rowp != NULL)
! 608: row = *rowp;
! 609: if (colp != NULL)
! 610: col = *colp;
! 611: }
! 612:
! 613: *cookiep = v;
! 614: *attrp = 0;
! 615: *curxp = col;
! 616: *curyp = row;
! 617:
! 618: sc->sc_nscreens++;
! 619: return (0);
! 620: }
! 621:
! 622: void
! 623: pcons_free_screen(void *v, void *cookie)
! 624: {
! 625: struct pconssoftc *sc = v;
! 626:
! 627: sc->sc_nscreens--;
! 628: }
! 629:
! 630: int
! 631: pcons_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p)
! 632: {
! 633: switch (cmd) {
! 634: case WSDISPLAYIO_GTYPE:
! 635: *(u_int *)data = WSDISPLAY_TYPE_UNKNOWN;
! 636: break;
! 637: default:
! 638: return (-1);
! 639: }
! 640:
! 641: return (0);
! 642: }
! 643:
! 644: paddr_t
! 645: pcons_mmap(void *v, off_t off, int prot)
! 646: {
! 647: return ((paddr_t)-1);
! 648: }
! 649:
! 650: int
! 651: pcons_show_screen(void *v, void *cookie, int waitok,
! 652: void (*cb)(void *, int, int), void *arg)
! 653: {
! 654: return (0);
! 655: }
! 656:
! 657: int
! 658: pcons_mapchar(void *v, int uc, unsigned int *idx)
! 659: {
! 660: if ((uc & 0xff) == uc) {
! 661: *idx = uc;
! 662: return (1);
! 663: } else {
! 664: *idx = ' ';
! 665: return (0);
! 666: }
! 667: }
! 668:
! 669: void
! 670: pcons_putchar(void *v, int row, int col, u_int uc, long attr)
! 671: {
! 672: u_char buf[1];
! 673: int s;
! 674:
! 675: buf[0] = (u_char)uc;
! 676: s = splhigh();
! 677: OF_write(stdout, &buf, 1);
! 678: splx(s);
! 679: }
! 680:
! 681: void
! 682: pcons_wsdisplay_init(struct pconssoftc *sc)
! 683: {
! 684: struct wsemuldisplaydev_attach_args waa;
! 685: int *rowp, *colp;
! 686: int options, row, col;
! 687:
! 688: row = col = 0;
! 689: if (romgetcursoraddr(&rowp, &colp) == 0) {
! 690: if (rowp != NULL)
! 691: row = *rowp;
! 692: if (colp != NULL)
! 693: col = *colp;
! 694: }
! 695:
! 696: options = OF_finddevice("/options");
! 697: pcons_stdscreen.nrows = getpropint(options, "screen-#rows", 34);
! 698: pcons_stdscreen.ncols = getpropint(options, "screen-#columns", 80);
! 699:
! 700: /*
! 701: * We claim console here, because we can only get there if stdin
! 702: * is a keyboard. However, the PROM could have been configured with
! 703: * stdin being a keyboard and stdout being a serial sink.
! 704: * But since this combination is not supported under OpenBSD at the
! 705: * moment, it is reasonably safe to attach a dumb display as console
! 706: * here.
! 707: */
! 708: wsdisplay_cnattach(&pcons_stdscreen, sc, col, row, 0);
! 709:
! 710: waa.console = 1;
! 711: waa.scrdata = &pcons_screenlist;
! 712: waa.accessops = &pcons_accessops;
! 713: waa.accesscookie = sc;
! 714: waa.defaultscreens = 1;
! 715:
! 716: config_found((struct device *)sc, &waa, wsemuldisplaydevprint);
! 717: }
! 718: #endif
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