| 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 1.13 2007/08/07 13:14:11 hasso 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/priv.h> |
| 54 | #include <sys/thread2.h> |
| 55 | #include <sys/ucred.h> |
| 56 | #include <sys/bus.h> |
| 57 | |
| 58 | #include "dcons.h" |
| 59 | #include "dcons_os.h" |
| 60 | |
| 61 | #include <ddb/ddb.h> |
| 62 | #include <sys/reboot.h> |
| 63 | |
| 64 | #include <sys/sysctl.h> |
| 65 | |
| 66 | #include <vm/vm.h> |
| 67 | #include <vm/vm_param.h> |
| 68 | #include <vm/pmap.h> |
| 69 | |
| 70 | #include "opt_ddb.h" |
| 71 | #include "opt_comconsole.h" |
| 72 | #include "opt_dcons.h" |
| 73 | |
| 74 | #ifndef DCONS_POLL_HZ |
| 75 | #define DCONS_POLL_HZ 100 |
| 76 | #endif |
| 77 | |
| 78 | #ifndef DCONS_BUF_SIZE |
| 79 | #define DCONS_BUF_SIZE (16*1024) |
| 80 | #endif |
| 81 | |
| 82 | #ifndef DCONS_FORCE_CONSOLE |
| 83 | #define DCONS_FORCE_CONSOLE 0 /* Mostly for FreeBSD-4/DragonFly */ |
| 84 | #endif |
| 85 | |
| 86 | #ifndef DCONS_FORCE_GDB |
| 87 | #define DCONS_FORCE_GDB 1 |
| 88 | #endif |
| 89 | |
| 90 | #define CDEV_MAJOR 184 |
| 91 | |
| 92 | static d_open_t dcons_open; |
| 93 | static d_close_t dcons_close; |
| 94 | static d_ioctl_t dcons_ioctl; |
| 95 | |
| 96 | static struct dev_ops dcons_ops = { |
| 97 | { "dcons", CDEV_MAJOR, D_TTY }, |
| 98 | .d_open = dcons_open, |
| 99 | .d_close = dcons_close, |
| 100 | .d_read = ttyread, |
| 101 | .d_write = ttywrite, |
| 102 | .d_ioctl = dcons_ioctl, |
| 103 | .d_kqfilter = ttykqfilter, |
| 104 | .d_revoke = ttyrevoke |
| 105 | }; |
| 106 | |
| 107 | #ifndef KLD_MODULE |
| 108 | static char bssbuf[DCONS_BUF_SIZE]; /* buf in bss */ |
| 109 | #endif |
| 110 | |
| 111 | /* global data */ |
| 112 | static struct dcons_global dg; |
| 113 | struct dcons_global *dcons_conf; |
| 114 | static int poll_hz = DCONS_POLL_HZ; |
| 115 | |
| 116 | static struct dcons_softc sc[DCONS_NPORT]; |
| 117 | |
| 118 | SYSCTL_NODE(_kern, OID_AUTO, dcons, CTLFLAG_RD, 0, "Dumb Console"); |
| 119 | SYSCTL_INT(_kern_dcons, OID_AUTO, poll_hz, CTLFLAG_RW, &poll_hz, 0, |
| 120 | "dcons polling rate"); |
| 121 | |
| 122 | static int drv_init = 0; |
| 123 | static struct callout dcons_callout; |
| 124 | struct dcons_buf *dcons_buf; /* for local dconschat */ |
| 125 | |
| 126 | #ifdef __DragonFly__ |
| 127 | #define DEV cdev_t |
| 128 | #define THREAD d_thread_t |
| 129 | #elif __FreeBSD_version < 500000 |
| 130 | #define DEV cdev_t |
| 131 | #define THREAD struct proc |
| 132 | #else |
| 133 | #define DEV struct cdev * |
| 134 | #define THREAD struct thread |
| 135 | #endif |
| 136 | |
| 137 | |
| 138 | static void dcons_tty_start(struct tty *); |
| 139 | static int dcons_tty_param(struct tty *, struct termios *); |
| 140 | static void dcons_timeout(void *); |
| 141 | static int dcons_drv_init(int); |
| 142 | |
| 143 | static cn_probe_t dcons_cnprobe; |
| 144 | static cn_init_t dcons_cninit; |
| 145 | static cn_init_fini_t dcons_cninit_fini; |
| 146 | static cn_getc_t dcons_cngetc; |
| 147 | static cn_checkc_t dcons_cncheckc; |
| 148 | static cn_putc_t dcons_cnputc; |
| 149 | |
| 150 | CONS_DRIVER(dcons, dcons_cnprobe, dcons_cninit, dcons_cninit_fini, |
| 151 | NULL, dcons_cngetc, dcons_cncheckc, dcons_cnputc, NULL); |
| 152 | |
| 153 | #if __FreeBSD_version >= 502122 |
| 154 | static gdb_probe_f dcons_dbg_probe; |
| 155 | static gdb_init_f dcons_dbg_init; |
| 156 | static gdb_term_f dcons_dbg_term; |
| 157 | static gdb_getc_f dcons_dbg_getc; |
| 158 | static gdb_checkc_f dcons_dbg_checkc; |
| 159 | static gdb_putc_f dcons_dbg_putc; |
| 160 | |
| 161 | GDB_DBGPORT(dcons, dcons_dbg_probe, dcons_dbg_init, dcons_dbg_term, |
| 162 | dcons_dbg_checkc, dcons_dbg_getc, dcons_dbg_putc); |
| 163 | |
| 164 | extern struct gdb_dbgport *gdb_cur; |
| 165 | #endif |
| 166 | |
| 167 | #if (KDB || DDB) && ALT_BREAK_TO_DEBUGGER |
| 168 | static int |
| 169 | dcons_check_break(struct dcons_softc *dc, int c) |
| 170 | { |
| 171 | if (c < 0) |
| 172 | return (c); |
| 173 | |
| 174 | #if __FreeBSD_version >= 502122 |
| 175 | if (kdb_alt_break(c, &dc->brk_state)) { |
| 176 | if ((dc->flags & DC_GDB) != 0) { |
| 177 | if (gdb_cur == &dcons_gdb_dbgport) { |
| 178 | kdb_dbbe_select("gdb"); |
| 179 | breakpoint(); |
| 180 | } |
| 181 | } else |
| 182 | breakpoint(); |
| 183 | } |
| 184 | #else |
| 185 | switch (dc->brk_state) { |
| 186 | case STATE1: |
| 187 | if (c == KEY_TILDE) |
| 188 | dc->brk_state = STATE2; |
| 189 | else |
| 190 | dc->brk_state = STATE0; |
| 191 | break; |
| 192 | case STATE2: |
| 193 | dc->brk_state = STATE0; |
| 194 | if (c == KEY_CTRLB) { |
| 195 | #if DCONS_FORCE_GDB |
| 196 | if (dc->flags & DC_GDB) |
| 197 | boothowto |= RB_GDB; |
| 198 | #endif |
| 199 | breakpoint(); |
| 200 | } |
| 201 | } |
| 202 | if (c == KEY_CR) |
| 203 | dc->brk_state = STATE1; |
| 204 | #endif |
| 205 | return (c); |
| 206 | } |
| 207 | #else |
| 208 | #define dcons_check_break(dc, c) (c) |
| 209 | #endif |
| 210 | |
| 211 | static int |
| 212 | dcons_os_checkc(struct dcons_softc *dc) |
| 213 | { |
| 214 | int c; |
| 215 | |
| 216 | if (dg.dma_tag != NULL) |
| 217 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD); |
| 218 | |
| 219 | c = dcons_check_break(dc, dcons_checkc(dc)); |
| 220 | |
| 221 | if (dg.dma_tag != NULL) |
| 222 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD); |
| 223 | |
| 224 | return (c); |
| 225 | } |
| 226 | |
| 227 | static int |
| 228 | dcons_os_getc(struct dcons_softc *dc) |
| 229 | { |
| 230 | int c; |
| 231 | |
| 232 | while ((c = dcons_os_checkc(dc)) == -1); |
| 233 | |
| 234 | return (c & 0xff); |
| 235 | } |
| 236 | |
| 237 | static void |
| 238 | dcons_os_putc(struct dcons_softc *dc, int c) |
| 239 | { |
| 240 | if (dg.dma_tag != NULL) |
| 241 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE); |
| 242 | |
| 243 | dcons_putc(dc, c); |
| 244 | |
| 245 | if (dg.dma_tag != NULL) |
| 246 | bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE); |
| 247 | } |
| 248 | static int |
| 249 | dcons_open(struct dev_open_args *ap) |
| 250 | { |
| 251 | cdev_t dev = ap->a_head.a_dev; |
| 252 | struct tty *tp; |
| 253 | int unit, error; |
| 254 | |
| 255 | unit = minor(dev); |
| 256 | if (unit != 0) |
| 257 | return (ENXIO); |
| 258 | |
| 259 | tp = dev->si_tty = ttymalloc(dev->si_tty); |
| 260 | tp->t_oproc = dcons_tty_start; |
| 261 | tp->t_param = dcons_tty_param; |
| 262 | tp->t_stop = nottystop; |
| 263 | tp->t_dev = dev; |
| 264 | |
| 265 | error = 0; |
| 266 | |
| 267 | crit_enter(); |
| 268 | if ((tp->t_state & TS_ISOPEN) == 0) { |
| 269 | tp->t_state |= TS_CARR_ON; |
| 270 | ttychars(tp); |
| 271 | tp->t_iflag = TTYDEF_IFLAG; |
| 272 | tp->t_oflag = TTYDEF_OFLAG; |
| 273 | tp->t_cflag = TTYDEF_CFLAG|CLOCAL; |
| 274 | tp->t_lflag = TTYDEF_LFLAG; |
| 275 | tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; |
| 276 | ttsetwater(tp); |
| 277 | } else if ((tp->t_state & TS_XCLUDE) && priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) { |
| 278 | crit_exit(); |
| 279 | return (EBUSY); |
| 280 | } |
| 281 | crit_exit(); |
| 282 | |
| 283 | #if __FreeBSD_version < 502113 |
| 284 | error = (*linesw[tp->t_line].l_open)(dev, tp); |
| 285 | #else |
| 286 | error = ttyld_open(tp, dev); |
| 287 | #endif |
| 288 | |
| 289 | return (error); |
| 290 | } |
| 291 | |
| 292 | static int |
| 293 | dcons_close(struct dev_close_args *ap) |
| 294 | { |
| 295 | cdev_t dev = ap->a_head.a_dev; |
| 296 | int unit; |
| 297 | struct tty *tp; |
| 298 | |
| 299 | unit = minor(dev); |
| 300 | if (unit != 0) |
| 301 | return (ENXIO); |
| 302 | |
| 303 | tp = dev->si_tty; |
| 304 | if (tp->t_state & TS_ISOPEN) { |
| 305 | (*linesw[tp->t_line].l_close)(tp, ap->a_fflag); |
| 306 | ttyclose(tp); |
| 307 | } |
| 308 | |
| 309 | return (0); |
| 310 | } |
| 311 | |
| 312 | static int |
| 313 | dcons_ioctl(struct dev_ioctl_args *ap) |
| 314 | { |
| 315 | cdev_t dev = ap->a_head.a_dev; |
| 316 | int unit; |
| 317 | struct tty *tp; |
| 318 | int error; |
| 319 | |
| 320 | unit = minor(dev); |
| 321 | if (unit != 0) |
| 322 | return (ENXIO); |
| 323 | |
| 324 | tp = dev->si_tty; |
| 325 | error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred); |
| 326 | if (error != ENOIOCTL) |
| 327 | return (error); |
| 328 | |
| 329 | error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag); |
| 330 | if (error != ENOIOCTL) |
| 331 | return (error); |
| 332 | |
| 333 | return (ENOTTY); |
| 334 | } |
| 335 | |
| 336 | static int |
| 337 | dcons_tty_param(struct tty *tp, struct termios *t) |
| 338 | { |
| 339 | tp->t_ispeed = t->c_ispeed; |
| 340 | tp->t_ospeed = t->c_ospeed; |
| 341 | tp->t_cflag = t->c_cflag; |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | static void |
| 346 | dcons_tty_start(struct tty *tp) |
| 347 | { |
| 348 | struct dcons_softc *dc; |
| 349 | |
| 350 | dc = (struct dcons_softc *)tp->t_dev->si_drv1; |
| 351 | crit_enter(); |
| 352 | if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { |
| 353 | ttwwakeup(tp); |
| 354 | return; |
| 355 | } |
| 356 | |
| 357 | tp->t_state |= TS_BUSY; |
| 358 | while (tp->t_outq.c_cc != 0) |
| 359 | dcons_os_putc(dc, clist_getc(&tp->t_outq)); |
| 360 | tp->t_state &= ~TS_BUSY; |
| 361 | |
| 362 | ttwwakeup(tp); |
| 363 | crit_exit(); |
| 364 | } |
| 365 | |
| 366 | static void |
| 367 | dcons_timeout(void *v) |
| 368 | { |
| 369 | struct tty *tp; |
| 370 | struct dcons_softc *dc; |
| 371 | int i, c, polltime; |
| 372 | |
| 373 | for (i = 0; i < DCONS_NPORT; i ++) { |
| 374 | dc = &sc[i]; |
| 375 | tp = ((DEV)dc->dev)->si_tty; |
| 376 | while ((c = dcons_os_checkc(dc)) != -1) |
| 377 | if (tp->t_state & TS_ISOPEN) |
| 378 | #if __FreeBSD_version < 502113 |
| 379 | (*linesw[tp->t_line].l_rint)(c, tp); |
| 380 | #else |
| 381 | ttyld_rint(tp, c); |
| 382 | #endif |
| 383 | } |
| 384 | polltime = hz / poll_hz; |
| 385 | if (polltime < 1) |
| 386 | polltime = 1; |
| 387 | callout_reset(&dcons_callout, polltime, dcons_timeout, tp); |
| 388 | } |
| 389 | |
| 390 | static void |
| 391 | dcons_cnprobe(struct consdev *cp) |
| 392 | { |
| 393 | #ifdef __DragonFly__ |
| 394 | cp->cn_probegood = 1; |
| 395 | #elif __FreeBSD_version >= 501109 |
| 396 | ksprintf(cp->cn_name, "dcons"); |
| 397 | #else |
| 398 | cp->cn_dev = makedev(CDEV_MAJOR, DCONS_CON); |
| 399 | #endif |
| 400 | #if DCONS_FORCE_CONSOLE |
| 401 | cp->cn_pri = CN_REMOTE; |
| 402 | #else |
| 403 | cp->cn_pri = CN_NORMAL; |
| 404 | #endif |
| 405 | } |
| 406 | |
| 407 | static void |
| 408 | dcons_cninit(struct consdev *cp) |
| 409 | { |
| 410 | dcons_drv_init(0); |
| 411 | #if CONS_NODEV |
| 412 | cp->cn_arg |
| 413 | #else |
| 414 | cp->cn_private |
| 415 | #endif |
| 416 | = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */ |
| 417 | } |
| 418 | |
| 419 | static void |
| 420 | dcons_cninit_fini(struct consdev *cp) |
| 421 | { |
| 422 | cp->cn_dev = make_dev(&dcons_ops, DCONS_CON, |
| 423 | UID_ROOT, GID_WHEEL, 0600, "dcons"); |
| 424 | } |
| 425 | |
| 426 | #if CONS_NODEV |
| 427 | static int |
| 428 | dcons_cngetc(struct consdev *cp) |
| 429 | { |
| 430 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 431 | return (dcons_os_getc(dc)); |
| 432 | } |
| 433 | static int |
| 434 | dcons_cncheckc(struct consdev *cp) |
| 435 | { |
| 436 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 437 | return (dcons_os_checkc(dc)); |
| 438 | } |
| 439 | static void |
| 440 | dcons_cnputc(struct consdev *cp, int c) |
| 441 | { |
| 442 | struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; |
| 443 | dcons_os_putc(dc, c); |
| 444 | } |
| 445 | #else |
| 446 | static int |
| 447 | dcons_cngetc(void *private) |
| 448 | { |
| 449 | struct dcons_softc *dc = (struct dcons_softc *)private; |
| 450 | return (dcons_os_getc(dc)); |
| 451 | } |
| 452 | static int |
| 453 | dcons_cncheckc(void *private) |
| 454 | { |
| 455 | struct dcons_softc *dc = (struct dcons_softc *)private; |
| 456 | return (dcons_os_checkc(dc)); |
| 457 | } |
| 458 | static void |
| 459 | dcons_cnputc(void *private, int c) |
| 460 | { |
| 461 | struct dcons_softc *dc = (struct dcons_softc *)private; |
| 462 | dcons_os_putc(dc, c); |
| 463 | } |
| 464 | #endif |
| 465 | |
| 466 | static int |
| 467 | dcons_drv_init(int stage) |
| 468 | { |
| 469 | #ifdef __i386__ |
| 470 | quad_t addr, size; |
| 471 | #endif |
| 472 | |
| 473 | if (drv_init) |
| 474 | return(drv_init); |
| 475 | |
| 476 | drv_init = -1; |
| 477 | |
| 478 | bzero(&dg, sizeof(dg)); |
| 479 | dcons_conf = &dg; |
| 480 | dg.cdev = &dcons_consdev; |
| 481 | dg.buf = NULL; |
| 482 | dg.size = DCONS_BUF_SIZE; |
| 483 | |
| 484 | #ifdef __i386__ |
| 485 | if (kgetenv_quad("dcons.addr", &addr) > 0 && |
| 486 | kgetenv_quad("dcons.size", &size) > 0) { |
| 487 | vm_paddr_t pa; |
| 488 | /* |
| 489 | * Allow read/write access to dcons buffer. |
| 490 | */ |
| 491 | for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE) |
| 492 | pmap_kmodify_rw((vm_offset_t)(KERNBASE + pa)); |
| 493 | cpu_invltlb(); |
| 494 | /* XXX P to V */ |
| 495 | dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr); |
| 496 | dg.size = size; |
| 497 | if (dcons_load_buffer(dg.buf, dg.size, sc) < 0) |
| 498 | dg.buf = NULL; |
| 499 | } |
| 500 | #endif |
| 501 | if (dg.buf != NULL) |
| 502 | goto ok; |
| 503 | |
| 504 | #ifndef KLD_MODULE |
| 505 | if (stage == 0) { /* XXX or cold */ |
| 506 | /* |
| 507 | * DCONS_FORCE_CONSOLE == 1 and statically linked. |
| 508 | * called from cninit(). can't use contigmalloc yet . |
| 509 | */ |
| 510 | dg.buf = (struct dcons_buf *) bssbuf; |
| 511 | dcons_init(dg.buf, dg.size, sc); |
| 512 | } else |
| 513 | #endif |
| 514 | { |
| 515 | /* |
| 516 | * DCONS_FORCE_CONSOLE == 0 or kernel module case. |
| 517 | * if the module is loaded after boot, |
| 518 | * bssbuf could be non-continuous. |
| 519 | */ |
| 520 | dg.buf = (struct dcons_buf *) contigmalloc(dg.size, |
| 521 | M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul); |
| 522 | dcons_init(dg.buf, dg.size, sc); |
| 523 | } |
| 524 | |
| 525 | ok: |
| 526 | dcons_buf = dg.buf; |
| 527 | |
| 528 | #if DDB && DCONS_FORCE_GDB |
| 529 | if (gdb_tab == NULL) { |
| 530 | gdb_tab = &dcons_consdev; |
| 531 | dcons_consdev.cn_gdbprivate = &sc[DCONS_GDB]; |
| 532 | } |
| 533 | #endif |
| 534 | drv_init = 1; |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | static int |
| 541 | dcons_attach_port(int port, char *name, int flags) |
| 542 | { |
| 543 | struct dcons_softc *dc; |
| 544 | struct tty *tp; |
| 545 | DEV dev; |
| 546 | |
| 547 | dc = &sc[port]; |
| 548 | dc->flags = flags; |
| 549 | dev = make_dev(&dcons_ops, port, |
| 550 | UID_ROOT, GID_WHEEL, 0600, name); |
| 551 | dc->dev = (void *)dev; |
| 552 | tp = ttymalloc(NULL); |
| 553 | |
| 554 | dev->si_drv1 = (void *)dc; |
| 555 | dev->si_tty = tp; |
| 556 | |
| 557 | tp->t_oproc = dcons_tty_start; |
| 558 | tp->t_param = dcons_tty_param; |
| 559 | tp->t_stop = nottystop; |
| 560 | tp->t_dev = dc->dev; |
| 561 | |
| 562 | return(0); |
| 563 | } |
| 564 | |
| 565 | static int |
| 566 | dcons_attach(void) |
| 567 | { |
| 568 | int polltime; |
| 569 | |
| 570 | dcons_attach_port(DCONS_CON, "dcons", 0); |
| 571 | dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB); |
| 572 | #if __FreeBSD_version < 500000 |
| 573 | callout_init(&dcons_callout); |
| 574 | #else |
| 575 | callout_init(&dcons_callout, 0); |
| 576 | #endif |
| 577 | polltime = hz / poll_hz; |
| 578 | if (polltime < 1) |
| 579 | polltime = 1; |
| 580 | callout_reset(&dcons_callout, polltime, dcons_timeout, NULL); |
| 581 | return(0); |
| 582 | } |
| 583 | |
| 584 | static int |
| 585 | dcons_detach(int port) |
| 586 | { |
| 587 | struct tty *tp; |
| 588 | struct dcons_softc *dc; |
| 589 | |
| 590 | dc = &sc[port]; |
| 591 | |
| 592 | tp = ((DEV)dc->dev)->si_tty; |
| 593 | |
| 594 | if (tp->t_state & TS_ISOPEN) { |
| 595 | kprintf("dcons: still opened\n"); |
| 596 | #if __FreeBSD_version < 502113 |
| 597 | (*linesw[tp->t_line].l_close)(tp, 0); |
| 598 | ttyclose(tp); |
| 599 | #else |
| 600 | ttyld_close(tp, 0); |
| 601 | tty_close(tp); |
| 602 | #endif |
| 603 | } |
| 604 | /* XXX |
| 605 | * must wait until all device are closed. |
| 606 | */ |
| 607 | #ifdef __DragonFly__ |
| 608 | tsleep((void *)dc, 0, "dcodtc", hz/4); |
| 609 | #else |
| 610 | tsleep((void *)dc, PWAIT, "dcodtc", hz/4); |
| 611 | #endif |
| 612 | destroy_dev(dc->dev); |
| 613 | |
| 614 | return(0); |
| 615 | } |
| 616 | |
| 617 | |
| 618 | /* cnXXX works only for FreeBSD-5 */ |
| 619 | static int |
| 620 | dcons_modevent(module_t mode, int type, void *data) |
| 621 | { |
| 622 | int err = 0, ret; |
| 623 | |
| 624 | switch (type) { |
| 625 | case MOD_LOAD: |
| 626 | ret = dcons_drv_init(1); |
| 627 | dcons_attach(); |
| 628 | #if __FreeBSD_version >= 500000 |
| 629 | if (ret == 0) { |
| 630 | dcons_cnprobe(&dcons_consdev); |
| 631 | dcons_cninit(&dcons_consdev); |
| 632 | cnadd(&dcons_consdev); |
| 633 | } |
| 634 | #endif |
| 635 | break; |
| 636 | case MOD_UNLOAD: |
| 637 | kprintf("dcons: unload\n"); |
| 638 | callout_stop(&dcons_callout); |
| 639 | #if __FreeBSD_version < 502122 |
| 640 | #if DDB && DCONS_FORCE_GDB |
| 641 | #if CONS_NODEV |
| 642 | gdb_arg = NULL; |
| 643 | #else |
| 644 | if (gdb_tab == &dcons_consdev) |
| 645 | gdb_tab = NULL; |
| 646 | #endif |
| 647 | #endif |
| 648 | #endif |
| 649 | #if __FreeBSD_version >= 500000 |
| 650 | cnremove(&dcons_consdev); |
| 651 | #endif |
| 652 | dcons_detach(DCONS_CON); |
| 653 | dcons_detach(DCONS_GDB); |
| 654 | dg.buf->magic = 0; |
| 655 | |
| 656 | contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF); |
| 657 | |
| 658 | break; |
| 659 | case MOD_SHUTDOWN: |
| 660 | dg.buf->magic = 0; |
| 661 | break; |
| 662 | default: |
| 663 | err = EOPNOTSUPP; |
| 664 | break; |
| 665 | } |
| 666 | return(err); |
| 667 | } |
| 668 | |
| 669 | #if __FreeBSD_version >= 502122 |
| 670 | /* Debugger interface */ |
| 671 | |
| 672 | static int |
| 673 | dcons_dbg_probe(void) |
| 674 | { |
| 675 | return(DCONS_FORCE_GDB); |
| 676 | } |
| 677 | |
| 678 | static void |
| 679 | dcons_dbg_init(void) |
| 680 | { |
| 681 | } |
| 682 | |
| 683 | static void |
| 684 | dcons_dbg_term(void) |
| 685 | { |
| 686 | } |
| 687 | |
| 688 | static void |
| 689 | dcons_dbg_putc(int c) |
| 690 | { |
| 691 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 692 | dcons_os_putc(dc, c); |
| 693 | } |
| 694 | |
| 695 | static int |
| 696 | dcons_dbg_checkc(void) |
| 697 | { |
| 698 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 699 | return (dcons_os_checkc(dc)); |
| 700 | } |
| 701 | |
| 702 | static int |
| 703 | dcons_dbg_getc(void) |
| 704 | { |
| 705 | struct dcons_softc *dc = &sc[DCONS_GDB]; |
| 706 | return (dcons_os_getc(dc)); |
| 707 | } |
| 708 | #endif |
| 709 | |
| 710 | DEV_MODULE(dcons, dcons_modevent, NULL); |
| 711 | MODULE_VERSION(dcons, DCONS_VERSION); |