| 1 | /* |
| 2 | * Copyright (C) 2003,2004 |
| 3 | * Hidetoshi Shimokawa. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * |
| 16 | * This product includes software developed by Hidetoshi Shimokawa. |
| 17 | * |
| 18 | * 4. Neither the name of the author nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * $FreeBSD: src/sys/dev/dcons/dcons_os.c,v 1.4 2004/10/24 12:41:04 simokawa Exp $ |
| 35 | * $DragonFly: src/sys/dev/misc/dcons/dcons_os.c,v 1.6 2006/09/10 01:26:34 dillon Exp $ |
| 36 | */ |
| 37 | |
| 38 | #include <sys/param.h> |
| 39 | #if __FreeBSD_version >= 502122 |
| 40 | #include <sys/kdb.h> |
| 41 | #include <gdb/gdb.h> |
| 42 | #endif |
| 43 | #include <sys/kernel.h> |
| 44 | #include <sys/module.h> |
| 45 | #include <sys/systm.h> |
| 46 | #include <sys/types.h> |
| 47 | #include <sys/conf.h> |
| 48 | #include <sys/cons.h> |
| 49 | #include <sys/consio.h> |
| 50 | #include <sys/tty.h> |
| 51 | #include <sys/malloc.h> |
| 52 | #include <sys/proc.h> |
| 53 | #include <sys/thread2.h> |
| 54 | #include <sys/ucred.h> |
| 55 | |
| 56 | #include <machine/bus.h> |
| 57 | |
| 58 | #ifdef __DragonFly__ |
| 59 | #include "dcons.h" |
| 60 | #include "dcons_os.h" |
| 61 | #else |
| 62 | #include <dev/dcons/dcons.h> |
| 63 | #include <dev/dcons/dcons_os.h> |
| 64 | #endif |
| 65 | |
| 66 | #include <ddb/ddb.h> |
| 67 | #include <sys/reboot.h> |
| 68 | |
| 69 | #include <sys/sysctl.h> |
| 70 | |
| 71 | #include <vm/vm.h> |
| 72 | #include <vm/vm_param.h> |
| 73 | #include <vm/pmap.h> |
| 74 | |
| 75 | #include "opt_ddb.h" |
| 76 | #include "opt_comconsole.h" |
| 77 | #include "opt_dcons.h" |
| 78 | |
| 79 | #ifndef DCONS_POLL_HZ |
| 80 | #define DCONS_POLL_HZ 100 |
| 81 | #endif |
| 82 | |
| 83 | #ifndef DCONS_BUF_SIZE |
| 84 | #define DCONS_BUF_SIZE (16*1024) |
| 85 | #endif |
| 86 | |
| 87 | #ifndef DCONS_FORCE_CONSOLE |
| 88 | #define DCONS_FORCE_CONSOLE 0 /* Mostly for FreeBSD-4/DragonFly */ |
| 89 | #endif |
| 90 | |
| 91 | #ifndef DCONS_FORCE_GDB |
| 92 | #define DCONS_FORCE_GDB 1 |
| 93 | #endif |
| 94 | |
| 95 | #if __FreeBSD_version >= 500101 |
| 96 | #define CONS_NODEV 1 |
| 97 | #if __FreeBSD_version < 502122 |
| 98 | static struct consdev gdbconsdev; |
| 99 | #endif |
| 100 | #endif |
| 101 | |
| 102 | #define CDEV_MAJOR 184 |
| 103 | |
| 104 | static d_open_t dcons_open; |
| 105 | static d_close_t dcons_close; |
| 106 | static d_ioctl_t dcons_ioctl; |
| 107 | |
| 108 | static struct dev_ops dcons_ops = { |
| 109 | { "dcons", CDEV_MAJOR, D_TTY }, |
| 110 | .d_open = dcons_open, |
| 111 | .d_close = dcons_close, |
| 112 | .d_read = ttyread, |
| 113 | .d_write = ttywrite, |
| 114 | .d_ioctl = dcons_ioctl, |
| 115 | .d_poll = ttypoll, |
| 116 | }; |
| 117 | |
| 118 | #ifndef KLD_MODULE |
| 119 | static char bssbuf[DCONS_BUF_SIZE]; /* buf in bss */ |
| 120 | #endif |
| 121 | |
| 122 | /* global data */ |
| 123 | static struct dcons_global dg; |
| 124 | struct dcons_global *dcons_conf; |
| 125 | static int poll_hz = DCONS_POLL_HZ; |
| 126 | |
| 127 | static struct dcons_softc sc[DCONS_NPORT]; |
| 128 | |
| 129 | SYSCTL_NODE(_kern, OID_AUTO, dcons, CTLFLAG_RD, 0, "Dumb Console"); |
| 130 | SYSCTL_INT(_kern_dcons, OID_AUTO, poll_hz, CTLFLAG_RW, &poll_hz, 0, |
| 131 | "dcons polling rate"); |
| 132 | |
| 133 | static int drv_init = 0; |
| 134 | static struct callout dcons_callout; |
| 135 | struct dcons_buf *dcons_buf; /* for local dconschat */ |
| 136 | |
| 137 | #ifdef __DragonFly__ |
| 138 | #define DEV cdev_t |
| 139 | #define THREAD d_thread_t |
| 140 | #elif __FreeBSD_version < 500000 |
| 141 | #define DEV cdev_t |
| 142 | #define THREAD struct proc |
| 143 | #else |
| 144 | #define DEV struct cdev * |
| 145 | #define THREAD struct thread |
| 146 | #endif |
| 147 | |
| 148 | |
| 149 | static void dcons_tty_start(struct tty *); |
| 150 | static int dcons_tty_param(struct tty *, struct termios *); |
| 151 | static void dcons_timeout(void *); |
| 152 | static int dcons_drv_init(int); |
| 153 | |
| 154 | static cn_probe_t dcons_cnprobe; |
| 155 | static cn_init_t dcons_cninit; |
| 156 | static cn_getc_t dcons_cngetc; |
| 157 | static cn_checkc_t dcons_cncheckc; |
| 158 | static cn_putc_t dcons_cnputc; |
| 159 | |
| 160 | CONS_DRIVER(dcons, dcons_cnprobe, dcons_cninit, NULL, dcons_cngetc, |
| 161 | dcons_cncheckc, dcons_cnputc, NULL); |
| 162 | |
| 163 | #if __FreeBSD_version >= 502122 |
| 164 | static gdb_probe_f dcons_dbg_probe; |
| 165 | static gdb_init_f dcons_dbg_init; |
| 166 | static gdb_term_f dcons_dbg_term; |
| 167 | static gdb_getc_f dcons_dbg_getc; |
| 168 | static gdb_checkc_f dcons_dbg_checkc; |
| 169 | static gdb_putc_f dcons_dbg_putc; |
| 170 | |
| 171 | GDB_DBGPORT(dcons, dcons_dbg_probe, dcons_dbg_init, dcons_dbg_term, |
| 172 | dcons_dbg_checkc, dcons_dbg_getc, dcons_dbg_putc); |
| 173 | |
| 174 | extern struct gdb_dbgport *gdb_cur; |
| 175 | #endif |
| 176 | |
| 177 | #if (KDB || DDB) && ALT_BREAK_TO_DEBUGGER |
| 178 | static int |
| 179 | dcons_check_break(struct dcons_softc *dc, int c) |
| 180 | { |
| 181 | if (c < 0) |
| 182 | return (c); |
| 183 | |
| 184 | #if __FreeBSD_version >= 502122 |
| 185 | if (kdb_alt_break(c, &dc->brk_state)) { |
| 186 | if ((dc->flags & DC_GDB) != 0) { |
| 187 | if (gdb_cur == &dcons_gdb_dbgport) { |
| 188 | kdb_dbbe_select("gdb"); |
| 189 | breakpoint(); |
| 190 | } |
| 191 | } else |
| 192 | breakpoint(); |
| 193 | } |
| 194 | #else |
| 195 | switch (dc->brk_state) { |
| 196 | case STATE1: |
| 197 | if (c == KEY_TILDE) |
| 198 | dc->brk_state = STATE2; |
| 199 | else |
| 200 | dc->brk_state = STATE0; |
| 201 | break; |
| 202 | case STATE2: |
| 203 | dc->brk_state = STATE0; |
| 204 | if (c == KEY_CTRLB) { |
| 205 | #if DCONS_FORCE_GDB |
| 206 | if (dc->flags & DC_GDB) |
| 207 | boothowto |= RB_GDB; |
| 208 | #endif |
| 209 | breakpoint(); |
| 210 | } |
| 211 | } |
| 212 | if (c == KEY_CR) |
| 213 | dc->brk_state = STATE1; |
| 214 | #endif |
| 215 | return (c); |
| 216 | } |
| 217 | #else |
| 218 | #define dcons_check_break(dc, c) (c) |
| 219 | #endif |
| 220 | |
| 221 | static int |
| 222 | dcons_os_checkc(struct dcons_softc *dc) |
| 223 | { |
| 224 | int c; |
| 225 | |
| 226 | if (dg.dma_tag != NULL) |
| 227 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD); |
| 228 | |
| 229 | c = dcons_check_break(dc, dcons_checkc(dc)); |
| 230 | |
| 231 | if (dg.dma_tag != NULL) |
| 232 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD); |
| 233 | |
| 234 | return (c); |
| 235 | } |
| 236 | |
| 237 | static int |
| 238 | dcons_os_getc(struct dcons_softc *dc) |
| 239 | { |
| 240 | int c; |
| 241 | |
| 242 | while ((c = dcons_os_checkc(dc)) == -1); |
| 243 | |
| 244 | return (c & 0xff); |
| 245 | } |
| 246 | |
| 247 | static void |
| 248 | dcons_os_putc(struct dcons_softc *dc, int c) |
| 249 | { |
| 250 | if (dg.dma_tag != NULL) |
| 251 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE); |
| 252 | |
| 253 | dcons_putc(dc, c); |
| 254 | |
| 255 | if (dg.dma_tag != NULL) |
| 256 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE); |
| 257 | } |
| 258 | static int |
| 259 | dcons_open(struct dev_open_args *ap) |
| 260 | { |
| 261 | cdev_t dev = ap->a_head.a_dev; |
| 262 | struct tty *tp; |
| 263 | int unit, error; |
| 264 | |
| 265 | unit = minor(dev); |
| 266 | if (unit != 0) |
| 267 | return (ENXIO); |
| 268 | |
| 269 | tp = dev->si_tty = ttymalloc(dev->si_tty); |
| 270 | tp->t_oproc = dcons_tty_start; |
| 271 | tp->t_param = dcons_tty_param; |
| 272 | tp->t_stop = nottystop; |
| 273 | tp->t_dev = dev; |
| 274 | |
| 275 | error = 0; |
| 276 | |
| 277 | crit_enter(); |
| 278 | if ((tp->t_state & TS_ISOPEN) == 0) { |
| 279 | tp->t_state |= TS_CARR_ON; |
| 280 | ttychars(tp); |
| 281 | tp->t_iflag = TTYDEF_IFLAG; |
| 282 | tp->t_oflag = TTYDEF_OFLAG; |
| 283 | tp->t_cflag = TTYDEF_CFLAG|CLOCAL; |
| 284 | tp->t_lflag = TTYDEF_LFLAG; |
| 285 | tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; |
| 286 | ttsetwater(tp); |
| 287 | } else if ((tp->t_state & TS_XCLUDE) && suser_cred(ap->a_cred, 0)) { |
| 288 | crit_exit(); |
| 289 | return (EBUSY); |
| 290 | } |
| 291 | crit_exit(); |
| 292 | |
| 293 | #if __FreeBSD_version < 502113 |
| 294 | error = (*linesw[tp->t_line].l_open)(dev, tp); |
| 295 | #else |
| 296 | error = ttyld_open(tp, dev); |
| 297 | #endif |
| 298 | |
| 299 | return (error); |
| 300 | } |
| 301 | |
| 302 | static int |
| 303 | dcons_close(struct dev_close_args *ap) |
| 304 | { |
| 305 | cdev_t dev = ap->a_head.a_dev; |
| 306 | int unit; |
| 307 | struct tty *tp; |
| 308 | |
| 309 | unit = minor(dev); |
| 310 | if (unit != 0) |
| 311 | return (ENXIO); |
| 312 | |
| 313 | tp = dev->si_tty; |
| 314 | if (tp->t_state & TS_ISOPEN) { |
| 315 | (*linesw[tp->t_line].l_close)(tp, ap->a_fflag); |
| 316 | ttyclose(tp); |
| 317 | } |
| 318 | |
| 319 | return (0); |
| 320 | } |
| 321 | |
| 322 | static int |
| 323 | dcons_ioctl(struct dev_ioctl_args *ap) |
| 324 | { |
| 325 | cdev_t dev = ap->a_head.a_dev; |
| 326 | int unit; |
| 327 | struct tty *tp; |
| 328 | int error; |
| 329 | |
| 330 | unit = minor(dev); |
| 331 | if (unit != 0) |
| 332 | return (ENXIO); |
| 333 | |
| 334 | tp = dev->si_tty; |
| 335 | error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred); |
| 336 | if (error != ENOIOCTL) |
| 337 | return (error); |
| 338 | |
| 339 | error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag); |
| 340 | if (error != ENOIOCTL) |
| 341 | return (error); |
| 342 | |
| 343 | return (ENOTTY); |
| 344 | } |
| 345 | |
| 346 | static int |
| 347 | dcons_tty_param(struct tty *tp, struct termios *t) |
| 348 | { |
| 349 | tp->t_ispeed = t->c_ispeed; |
| 350 | tp->t_ospeed = t->c_ospeed; |
| 351 | tp->t_cflag = t->c_cflag; |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static void |
| 356 | dcons_tty_start(struct tty *tp) |
| 357 | { |
| 358 | struct dcons_softc *dc; |
| 359 | |
| 360 | dc = (struct dcons_softc *)tp->t_dev->si_drv1; |
| 361 | crit_enter(); |
| 362 | if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { |
| 363 | ttwwakeup(tp); |
| 364 | return; |
| 365 | } |
| 366 | |
| 367 | tp->t_state |= TS_BUSY; |
| 368 | while (tp->t_outq.c_cc != 0) |
| 369 | dcons_os_putc(dc, clist_getc(&tp->t_outq)); |
| 370 | tp->t_state &= ~TS_BUSY; |
| 371 | |
| 372 | ttwwakeup(tp); |
| 373 | crit_exit(); |
| 374 | } |
| 375 | |
| 376 | static void |
| 377 | dcons_timeout(void *v) |
| 378 | { |
| 379 | struct tty *tp; |
| 380 | struct dcons_softc *dc; |
| 381 | int i, c, polltime; |
| 382 | |
| 383 | for (i = 0; i < DCONS_NPORT; i ++) { |
| 384 | dc = &sc[i]; |
| 385 | tp = ((DEV)dc->dev)->si_tty; |
| 386 | while ((c = dcons_os_checkc(dc)) != -1) |
| 387 | if (tp->t_state & TS_ISOPEN) |
| 388 | #if __FreeBSD_version < 502113 |
| 389 | (*linesw[tp->t_line].l_rint)(c, tp); |
| 390 | #else |
| 391 | ttyld_rint(tp, c); |
| 392 | #endif |
| 393 | } |
| 394 | polltime = hz / poll_hz; |
| 395 | if (polltime < 1) |
| 396 | polltime = 1; |
| 397 | callout_reset(&dcons_callout, polltime, dcons_timeout, tp); |
| 398 | } |
| 399 | |
| 400 | static void |
| 401 | dcons_cnprobe(struct consdev *cp) |
| 402 | { |
| 403 | #ifdef __DragonFly__ |
| 404 | cp->cn_dev = make_dev(&dcons_ops, DCONS_CON, |
| 405 | UID_ROOT, GID_WHEEL, 0600, "dcons"); |
| 406 | #elif __FreeBSD_version >= 501109 |
| 407 | sprintf(cp->cn_name, "dcons"); |
| 408 | #else |
| 409 | cp->cn_dev = makedev(CDEV_MAJOR, DCONS_CON); |
| 410 | #endif |
| 411 | #if DCONS_FORCE_CONSOLE |
| 412 | cp->cn_pri = CN_REMOTE; |
| 413 | #else |
| 414 | cp->cn_pri = CN_NORMAL; |
| 415 | #endif |
| 416 | } |
| 417 | |
| 418 | static void |
| 419 | dcons_cninit(struct consdev *cp) |
| 420 | { |
| 421 | dcons_drv_init(0); |
| 422 | #if CONS_NODEV |
| 423 | cp->cn_arg |
| 424 | #else |
| 425 | cp->cn_dev->si_drv1 |
| 426 | #endif |
| 427 | = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */ |
| 428 | } |
| 429 | |
| 430 | #if CONS_NODEV |
| 431 | static int |
| 432 | dcons_cngetc(struct consdev *cp) |
| 433 | { |
| 434 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 435 | return (dcons_os_getc(dc)); |
| 436 | } |
| 437 | static int |
| 438 | dcons_cncheckc(struct consdev *cp) |
| 439 | { |
| 440 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 441 | return (dcons_os_checkc(dc)); |
| 442 | } |
| 443 | static void |
| 444 | dcons_cnputc(struct consdev *cp, int c) |
| 445 | { |
| 446 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 447 | dcons_os_putc(dc, c); |
| 448 | } |
| 449 | #else |
| 450 | static int |
| 451 | dcons_cngetc(DEV dev) |
| 452 | { |
| 453 | struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; |
| 454 | return (dcons_os_getc(dc)); |
| 455 | } |
| 456 | static int |
| 457 | dcons_cncheckc(DEV dev) |
| 458 | { |
| 459 | struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; |
| 460 | return (dcons_os_checkc(dc)); |
| 461 | } |
| 462 | static void |
| 463 | dcons_cnputc(DEV dev, int c) |
| 464 | { |
| 465 | struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; |
| 466 | dcons_os_putc(dc, c); |
| 467 | } |
| 468 | #endif |
| 469 | |
| 470 | static int |
| 471 | dcons_drv_init(int stage) |
| 472 | { |
| 473 | #ifdef __i386__ |
| 474 | quad_t addr, size; |
| 475 | #endif |
| 476 | |
| 477 | if (drv_init) |
| 478 | return(drv_init); |
| 479 | |
| 480 | drv_init = -1; |
| 481 | |
| 482 | bzero(&dg, sizeof(dg)); |
| 483 | dcons_conf = &dg; |
| 484 | dg.cdev = &dcons_consdev; |
| 485 | dg.buf = NULL; |
| 486 | dg.size = DCONS_BUF_SIZE; |
| 487 | |
| 488 | #ifdef __i386__ |
| 489 | if (kgetenv_quad("dcons.addr", &addr) > 0 && |
| 490 | kgetenv_quad("dcons.size", &size) > 0) { |
| 491 | vm_paddr_t pa; |
| 492 | /* |
| 493 | * Allow read/write access to dcons buffer. |
| 494 | */ |
| 495 | for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE) |
| 496 | *vtopte(KERNBASE + pa) |= PG_RW; |
| 497 | cpu_invltlb(); |
| 498 | /* XXX P to V */ |
| 499 | dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr); |
| 500 | dg.size = size; |
| 501 | if (dcons_load_buffer(dg.buf, dg.size, sc) < 0) |
| 502 | dg.buf = NULL; |
| 503 | } |
| 504 | #endif |
| 505 | if (dg.buf != NULL) |
| 506 | goto ok; |
| 507 | |
| 508 | #ifndef KLD_MODULE |
| 509 | if (stage == 0) { /* XXX or cold */ |
| 510 | /* |
| 511 | * DCONS_FORCE_CONSOLE == 1 and statically linked. |
| 512 | * called from cninit(). can't use contigmalloc yet . |
| 513 | */ |
| 514 | dg.buf = (struct dcons_buf *) bssbuf; |
| 515 | dcons_init(dg.buf, dg.size, sc); |
| 516 | } else |
| 517 | #endif |
| 518 | { |
| 519 | /* |
| 520 | * DCONS_FORCE_CONSOLE == 0 or kernel module case. |
| 521 | * if the module is loaded after boot, |
| 522 | * bssbuf could be non-continuous. |
| 523 | */ |
| 524 | dg.buf = (struct dcons_buf *) contigmalloc(dg.size, |
| 525 | M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul); |
| 526 | dcons_init(dg.buf, dg.size, sc); |
| 527 | } |
| 528 | |
| 529 | ok: |
| 530 | dcons_buf = dg.buf; |
| 531 | |
| 532 | #if __FreeBSD_version < 502122 |
| 533 | #if DDB && DCONS_FORCE_GDB |
| 534 | #if CONS_NODEV |
| 535 | gdbconsdev.cn_arg = (void *)&sc[DCONS_GDB]; |
| 536 | #if __FreeBSD_version >= 501109 |
| 537 | sprintf(gdbconsdev.cn_name, "dgdb"); |
| 538 | #endif |
| 539 | gdb_arg = &gdbconsdev; |
| 540 | #elif defined(__DragonFly__) |
| 541 | gdbdev = make_dev(&dcons_ops, DCONS_GDB, |
| 542 | UID_ROOT, GID_WHEEL, 0600, "dgdb"); |
| 543 | #else |
| 544 | gdbdev = makedev(CDEV_MAJOR, DCONS_GDB); |
| 545 | #endif |
| 546 | gdb_getc = dcons_cngetc; |
| 547 | gdb_putc = dcons_cnputc; |
| 548 | #endif |
| 549 | #endif |
| 550 | drv_init = 1; |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | |
| 556 | static int |
| 557 | dcons_attach_port(int port, char *name, int flags) |
| 558 | { |
| 559 | struct dcons_softc *dc; |
| 560 | struct tty *tp; |
| 561 | DEV dev; |
| 562 | |
| 563 | dc = &sc[port]; |
| 564 | dc->flags = flags; |
| 565 | dev = make_dev(&dcons_ops, port, |
| 566 | UID_ROOT, GID_WHEEL, 0600, name); |
| 567 | dc->dev = (void *)dev; |
| 568 | tp = ttymalloc(NULL); |
| 569 | |
| 570 | dev->si_drv1 = (void *)dc; |
| 571 | dev->si_tty = tp; |
| 572 | |
| 573 | tp->t_oproc = dcons_tty_start; |
| 574 | tp->t_param = dcons_tty_param; |
| 575 | tp->t_stop = nottystop; |
| 576 | tp->t_dev = dc->dev; |
| 577 | |
| 578 | return(0); |
| 579 | } |
| 580 | |
| 581 | static int |
| 582 | dcons_attach(void) |
| 583 | { |
| 584 | int polltime; |
| 585 | |
| 586 | #ifdef __DragonFly__ |
| 587 | dev_ops_add(&dcons_ops, -1, 0); |
| 588 | #endif |
| 589 | dcons_attach_port(DCONS_CON, "dcons", 0); |
| 590 | dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB); |
| 591 | #if __FreeBSD_version < 500000 |
| 592 | callout_init(&dcons_callout); |
| 593 | #else |
| 594 | callout_init(&dcons_callout, 0); |
| 595 | #endif |
| 596 | polltime = hz / poll_hz; |
| 597 | if (polltime < 1) |
| 598 | polltime = 1; |
| 599 | callout_reset(&dcons_callout, polltime, dcons_timeout, NULL); |
| 600 | return(0); |
| 601 | } |
| 602 | |
| 603 | static int |
| 604 | dcons_detach(int port) |
| 605 | { |
| 606 | struct tty *tp; |
| 607 | struct dcons_softc *dc; |
| 608 | |
| 609 | dc = &sc[port]; |
| 610 | |
| 611 | tp = ((DEV)dc->dev)->si_tty; |
| 612 | |
| 613 | if (tp->t_state & TS_ISOPEN) { |
| 614 | printf("dcons: still opened\n"); |
| 615 | #if __FreeBSD_version < 502113 |
| 616 | (*linesw[tp->t_line].l_close)(tp, 0); |
| 617 | tp->t_gen++; |
| 618 | ttyclose(tp); |
| 619 | ttwakeup(tp); |
| 620 | ttwwakeup(tp); |
| 621 | #else |
| 622 | ttyld_close(tp, 0); |
| 623 | tty_close(tp); |
| 624 | #endif |
| 625 | } |
| 626 | /* XXX |
| 627 | * must wait until all device are closed. |
| 628 | */ |
| 629 | #ifdef __DragonFly__ |
| 630 | tsleep((void *)dc, 0, "dcodtc", hz/4); |
| 631 | #else |
| 632 | tsleep((void *)dc, PWAIT, "dcodtc", hz/4); |
| 633 | #endif |
| 634 | destroy_dev(dc->dev); |
| 635 | |
| 636 | return(0); |
| 637 | } |
| 638 | |
| 639 | |
| 640 | /* cnXXX works only for FreeBSD-5 */ |
| 641 | static int |
| 642 | dcons_modevent(module_t mode, int type, void *data) |
| 643 | { |
| 644 | int err = 0, ret; |
| 645 | |
| 646 | switch (type) { |
| 647 | case MOD_LOAD: |
| 648 | ret = dcons_drv_init(1); |
| 649 | dcons_attach(); |
| 650 | #if __FreeBSD_version >= 500000 |
| 651 | if (ret == 0) { |
| 652 | dcons_cnprobe(&dcons_consdev); |
| 653 | dcons_cninit(&dcons_consdev); |
| 654 | cnadd(&dcons_consdev); |
| 655 | } |
| 656 | #endif |
| 657 | break; |
| 658 | case MOD_UNLOAD: |
| 659 | printf("dcons: unload\n"); |
| 660 | callout_stop(&dcons_callout); |
| 661 | #if __FreeBSD_version < 502122 |
| 662 | #if DDB && DCONS_FORCE_GDB |
| 663 | #if CONS_NODEV |
| 664 | gdb_arg = NULL; |
| 665 | #else |
| 666 | gdbdev = NULL; |
| 667 | #endif |
| 668 | #endif |
| 669 | #endif |
| 670 | #if __FreeBSD_version >= 500000 |
| 671 | cnremove(&dcons_consdev); |
| 672 | #endif |
| 673 | dcons_detach(DCONS_CON); |
| 674 | dcons_detach(DCONS_GDB); |
| 675 | dg.buf->magic = 0; |
| 676 | |
| 677 | contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF); |
| 678 | |
| 679 | break; |
| 680 | case MOD_SHUTDOWN: |
| 681 | dg.buf->magic = 0; |
| 682 | break; |
| 683 | default: |
| 684 | err = EOPNOTSUPP; |
| 685 | break; |
| 686 | } |
| 687 | return(err); |
| 688 | } |
| 689 | |
| 690 | #if __FreeBSD_version >= 502122 |
| 691 | /* Debugger interface */ |
| 692 | |
| 693 | static int |
| 694 | dcons_dbg_probe(void) |
| 695 | { |
| 696 | return(DCONS_FORCE_GDB); |
| 697 | } |
| 698 | |
| 699 | static void |
| 700 | dcons_dbg_init(void) |
| 701 | { |
| 702 | } |
| 703 | |
| 704 | static void |
| 705 | dcons_dbg_term(void) |
| 706 | { |
| 707 | } |
| 708 | |
| 709 | static void |
| 710 | dcons_dbg_putc(int c) |
| 711 | { |
| 712 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 713 | dcons_os_putc(dc, c); |
| 714 | } |
| 715 | |
| 716 | static int |
| 717 | dcons_dbg_checkc(void) |
| 718 | { |
| 719 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 720 | return (dcons_os_checkc(dc)); |
| 721 | } |
| 722 | |
| 723 | static int |
| 724 | dcons_dbg_getc(void) |
| 725 | { |
| 726 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 727 | return (dcons_os_getc(dc)); |
| 728 | } |
| 729 | #endif |
| 730 | |
| 731 | DEV_MODULE(dcons, dcons_modevent, NULL); |
| 732 | MODULE_VERSION(dcons, DCONS_VERSION); |