dcons_os.c revision 171867
1139749Simp/*- 2136467Ssimokawa * Copyright (C) 2003,2004 3136467Ssimokawa * Hidetoshi Shimokawa. All rights reserved. 4136467Ssimokawa * 5136467Ssimokawa * Redistribution and use in source and binary forms, with or without 6136467Ssimokawa * modification, are permitted provided that the following conditions 7136467Ssimokawa * are met: 8136467Ssimokawa * 1. Redistributions of source code must retain the above copyright 9136467Ssimokawa * notice, this list of conditions and the following disclaimer. 10136467Ssimokawa * 2. Redistributions in binary form must reproduce the above copyright 11136467Ssimokawa * notice, this list of conditions and the following disclaimer in the 12136467Ssimokawa * documentation and/or other materials provided with the distribution. 13136467Ssimokawa * 3. All advertising materials mentioning features or use of this software 14136467Ssimokawa * must display the following acknowledgement: 15136467Ssimokawa * 16136467Ssimokawa * This product includes software developed by Hidetoshi Shimokawa. 17136467Ssimokawa * 18136467Ssimokawa * 4. Neither the name of the author nor the names of its contributors 19136467Ssimokawa * may be used to endorse or promote products derived from this software 20136467Ssimokawa * without specific prior written permission. 21136467Ssimokawa * 22136467Ssimokawa * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23136467Ssimokawa * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24136467Ssimokawa * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25136467Ssimokawa * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26136467Ssimokawa * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27136467Ssimokawa * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28136467Ssimokawa * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29136467Ssimokawa * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30136467Ssimokawa * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31136467Ssimokawa * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32136467Ssimokawa * SUCH DAMAGE. 33136467Ssimokawa * 34136467Ssimokawa * $FreeBSD: head/sys/dev/dcons/dcons_os.c 171867 2007-08-17 05:32:39Z simokawa $ 35136467Ssimokawa */ 36136467Ssimokawa 37136467Ssimokawa#include <sys/param.h> 38136467Ssimokawa#if __FreeBSD_version >= 502122 39136467Ssimokawa#include <sys/kdb.h> 40136467Ssimokawa#include <gdb/gdb.h> 41136467Ssimokawa#endif 42136467Ssimokawa#include <sys/kernel.h> 43136467Ssimokawa#include <sys/module.h> 44136467Ssimokawa#include <sys/systm.h> 45136467Ssimokawa#include <sys/types.h> 46136467Ssimokawa#include <sys/conf.h> 47136467Ssimokawa#include <sys/cons.h> 48136467Ssimokawa#include <sys/consio.h> 49136467Ssimokawa#include <sys/tty.h> 50136467Ssimokawa#include <sys/malloc.h> 51164033Srwatson#include <sys/priv.h> 52136467Ssimokawa#include <sys/proc.h> 53136467Ssimokawa#include <sys/ucred.h> 54136467Ssimokawa 55136467Ssimokawa#include <machine/bus.h> 56136467Ssimokawa 57136467Ssimokawa#ifdef __DragonFly__ 58136467Ssimokawa#include "dcons.h" 59136467Ssimokawa#include "dcons_os.h" 60136467Ssimokawa#else 61136467Ssimokawa#include <dev/dcons/dcons.h> 62136467Ssimokawa#include <dev/dcons/dcons_os.h> 63136467Ssimokawa#endif 64136467Ssimokawa 65136467Ssimokawa#include <ddb/ddb.h> 66136467Ssimokawa#include <sys/reboot.h> 67136467Ssimokawa 68136467Ssimokawa#include <sys/sysctl.h> 69136467Ssimokawa 70136467Ssimokawa#include <vm/vm.h> 71136467Ssimokawa#include <vm/vm_param.h> 72136467Ssimokawa#include <vm/pmap.h> 73136467Ssimokawa 74136467Ssimokawa#include "opt_comconsole.h" 75136467Ssimokawa#include "opt_dcons.h" 76170017Ssimokawa#include "opt_kdb.h" 77170017Ssimokawa#include "opt_gdb.h" 78170017Ssimokawa#include "opt_ddb.h" 79136467Ssimokawa 80170017Ssimokawa 81136467Ssimokawa#ifndef DCONS_POLL_HZ 82136467Ssimokawa#define DCONS_POLL_HZ 100 83136467Ssimokawa#endif 84136467Ssimokawa 85136467Ssimokawa#ifndef DCONS_BUF_SIZE 86136467Ssimokawa#define DCONS_BUF_SIZE (16*1024) 87136467Ssimokawa#endif 88136467Ssimokawa 89136467Ssimokawa#ifndef DCONS_FORCE_CONSOLE 90136467Ssimokawa#define DCONS_FORCE_CONSOLE 0 /* Mostly for FreeBSD-4/DragonFly */ 91136467Ssimokawa#endif 92136467Ssimokawa 93136467Ssimokawa#ifndef DCONS_FORCE_GDB 94136467Ssimokawa#define DCONS_FORCE_GDB 1 95136467Ssimokawa#endif 96136467Ssimokawa 97136467Ssimokawa#if __FreeBSD_version >= 500101 98136467Ssimokawa#define CONS_NODEV 1 99136467Ssimokawa#if __FreeBSD_version < 502122 100136467Ssimokawastatic struct consdev gdbconsdev; 101136467Ssimokawa#endif 102136467Ssimokawa#endif 103136467Ssimokawa 104136467Ssimokawastatic d_open_t dcons_open; 105136467Ssimokawastatic d_close_t dcons_close; 106136467Ssimokawa#if defined(__DragonFly__) || __FreeBSD_version < 500104 107136467Ssimokawastatic d_ioctl_t dcons_ioctl; 108136467Ssimokawa#endif 109136467Ssimokawa 110136467Ssimokawastatic struct cdevsw dcons_cdevsw = { 111136467Ssimokawa#ifdef __DragonFly__ 112136467Ssimokawa#define CDEV_MAJOR 184 113136467Ssimokawa "dcons", CDEV_MAJOR, D_TTY, NULL, 0, 114136467Ssimokawa dcons_open, dcons_close, ttyread, ttywrite, dcons_ioctl, 115136467Ssimokawa ttypoll, nommap, nostrategy, nodump, nopsize, 116136467Ssimokawa#elif __FreeBSD_version >= 500104 117136467Ssimokawa .d_version = D_VERSION, 118136467Ssimokawa .d_open = dcons_open, 119136467Ssimokawa .d_close = dcons_close, 120136467Ssimokawa .d_name = "dcons", 121136467Ssimokawa .d_flags = D_TTY | D_NEEDGIANT, 122136467Ssimokawa#else 123136467Ssimokawa#define CDEV_MAJOR 184 124136467Ssimokawa /* open */ dcons_open, 125136467Ssimokawa /* close */ dcons_close, 126136467Ssimokawa /* read */ ttyread, 127136467Ssimokawa /* write */ ttywrite, 128136467Ssimokawa /* ioctl */ dcons_ioctl, 129136467Ssimokawa /* poll */ ttypoll, 130136467Ssimokawa /* mmap */ nommap, 131136467Ssimokawa /* strategy */ nostrategy, 132136467Ssimokawa /* name */ "dcons", 133136467Ssimokawa /* major */ CDEV_MAJOR, 134136467Ssimokawa /* dump */ nodump, 135136467Ssimokawa /* psize */ nopsize, 136136467Ssimokawa /* flags */ D_TTY, 137136467Ssimokawa#endif 138136467Ssimokawa}; 139136467Ssimokawa 140136467Ssimokawa#ifndef KLD_MODULE 141136467Ssimokawastatic char bssbuf[DCONS_BUF_SIZE]; /* buf in bss */ 142136467Ssimokawa#endif 143136467Ssimokawa 144136467Ssimokawa/* global data */ 145136467Ssimokawastatic struct dcons_global dg; 146136467Ssimokawastruct dcons_global *dcons_conf; 147136467Ssimokawastatic int poll_hz = DCONS_POLL_HZ; 148136467Ssimokawa 149136467Ssimokawastatic struct dcons_softc sc[DCONS_NPORT]; 150136467Ssimokawa 151136467SsimokawaSYSCTL_NODE(_kern, OID_AUTO, dcons, CTLFLAG_RD, 0, "Dumb Console"); 152136467SsimokawaSYSCTL_INT(_kern_dcons, OID_AUTO, poll_hz, CTLFLAG_RW, &poll_hz, 0, 153136467Ssimokawa "dcons polling rate"); 154136467Ssimokawa 155136467Ssimokawastatic int drv_init = 0; 156136467Ssimokawastatic struct callout dcons_callout; 157136467Ssimokawastruct dcons_buf *dcons_buf; /* for local dconschat */ 158136467Ssimokawa 159136467Ssimokawa#ifdef __DragonFly__ 160136467Ssimokawa#define DEV dev_t 161136467Ssimokawa#define THREAD d_thread_t 162136467Ssimokawa#elif __FreeBSD_version < 500000 163136467Ssimokawa#define DEV dev_t 164136467Ssimokawa#define THREAD struct proc 165136467Ssimokawa#else 166136467Ssimokawa#define DEV struct cdev * 167136467Ssimokawa#define THREAD struct thread 168136467Ssimokawa#endif 169136467Ssimokawa 170136467Ssimokawa 171136467Ssimokawastatic void dcons_tty_start(struct tty *); 172136467Ssimokawastatic int dcons_tty_param(struct tty *, struct termios *); 173136467Ssimokawastatic void dcons_timeout(void *); 174136467Ssimokawastatic int dcons_drv_init(int); 175136467Ssimokawa 176136467Ssimokawastatic cn_probe_t dcons_cnprobe; 177136467Ssimokawastatic cn_init_t dcons_cninit; 178158959Sphkstatic cn_term_t dcons_cnterm; 179136467Ssimokawastatic cn_getc_t dcons_cngetc; 180136467Ssimokawastatic cn_putc_t dcons_cnputc; 181136467Ssimokawa 182158959SphkCONSOLE_DRIVER(dcons); 183136467Ssimokawa 184170017Ssimokawa#if defined(GDB) && (__FreeBSD_version >= 502122) 185136467Ssimokawastatic gdb_probe_f dcons_dbg_probe; 186136467Ssimokawastatic gdb_init_f dcons_dbg_init; 187136467Ssimokawastatic gdb_term_f dcons_dbg_term; 188136467Ssimokawastatic gdb_getc_f dcons_dbg_getc; 189136467Ssimokawastatic gdb_putc_f dcons_dbg_putc; 190136467Ssimokawa 191136467SsimokawaGDB_DBGPORT(dcons, dcons_dbg_probe, dcons_dbg_init, dcons_dbg_term, 192158950Sphk dcons_dbg_getc, dcons_dbg_putc); 193136467Ssimokawa 194136467Ssimokawaextern struct gdb_dbgport *gdb_cur; 195136467Ssimokawa#endif 196136467Ssimokawa 197170017Ssimokawa#if (defined(GDB) || defined(DDB)) && defined(ALT_BREAK_TO_DEBUGGER) 198136467Ssimokawastatic int 199136467Ssimokawadcons_check_break(struct dcons_softc *dc, int c) 200136467Ssimokawa{ 201136467Ssimokawa if (c < 0) 202136467Ssimokawa return (c); 203136467Ssimokawa 204136467Ssimokawa#if __FreeBSD_version >= 502122 205136467Ssimokawa if (kdb_alt_break(c, &dc->brk_state)) { 206170043Ssimokawa if ((dc->flags & DC_GDB) != 0) { 207170017Ssimokawa#ifdef GDB 208136467Ssimokawa if (gdb_cur == &dcons_gdb_dbgport) { 209136467Ssimokawa kdb_dbbe_select("gdb"); 210170418Ssimokawa kdb_enter("Break sequence on dcons gdb port"); 211136467Ssimokawa } 212170043Ssimokawa#endif 213136467Ssimokawa } else 214170418Ssimokawa kdb_enter("Break sequence on dcons console port"); 215136467Ssimokawa } 216136467Ssimokawa#else 217136467Ssimokawa switch (dc->brk_state) { 218136467Ssimokawa case STATE1: 219136467Ssimokawa if (c == KEY_TILDE) 220136467Ssimokawa dc->brk_state = STATE2; 221136467Ssimokawa else 222136467Ssimokawa dc->brk_state = STATE0; 223136467Ssimokawa break; 224136467Ssimokawa case STATE2: 225136467Ssimokawa dc->brk_state = STATE0; 226136467Ssimokawa if (c == KEY_CTRLB) { 227136467Ssimokawa#if DCONS_FORCE_GDB 228136467Ssimokawa if (dc->flags & DC_GDB) 229136467Ssimokawa boothowto |= RB_GDB; 230136467Ssimokawa#endif 231136467Ssimokawa breakpoint(); 232136467Ssimokawa } 233136467Ssimokawa } 234136467Ssimokawa if (c == KEY_CR) 235136467Ssimokawa dc->brk_state = STATE1; 236136467Ssimokawa#endif 237136467Ssimokawa return (c); 238136467Ssimokawa} 239136467Ssimokawa#else 240136467Ssimokawa#define dcons_check_break(dc, c) (c) 241136467Ssimokawa#endif 242136467Ssimokawa 243136467Ssimokawastatic int 244171867Ssimokawadcons_os_checkc_nopoll(struct dcons_softc *dc) 245136467Ssimokawa{ 246136467Ssimokawa int c; 247136467Ssimokawa 248136467Ssimokawa if (dg.dma_tag != NULL) 249136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD); 250136467Ssimokawa 251136467Ssimokawa c = dcons_check_break(dc, dcons_checkc(dc)); 252136467Ssimokawa 253136467Ssimokawa if (dg.dma_tag != NULL) 254136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD); 255136467Ssimokawa 256136467Ssimokawa return (c); 257136467Ssimokawa} 258136467Ssimokawa 259171867Ssimokawastatic int 260171867Ssimokawadcons_os_checkc(struct dcons_softc *dc) 261171867Ssimokawa{ 262171867Ssimokawa EVENTHANDLER_INVOKE(dcons_poll, 0); 263171867Ssimokawa return (dcons_os_checkc_nopoll(dc)); 264171867Ssimokawa} 265171867Ssimokawa 266170017Ssimokawa#if defined(GDB) || !defined(CONS_NODEV) 267136467Ssimokawastatic int 268136467Ssimokawadcons_os_getc(struct dcons_softc *dc) 269136467Ssimokawa{ 270136467Ssimokawa int c; 271136467Ssimokawa 272136467Ssimokawa while ((c = dcons_os_checkc(dc)) == -1); 273136467Ssimokawa 274136467Ssimokawa return (c & 0xff); 275136467Ssimokawa} 276170017Ssimokawa#endif 277136467Ssimokawa 278136467Ssimokawastatic void 279136467Ssimokawadcons_os_putc(struct dcons_softc *dc, int c) 280136467Ssimokawa{ 281136467Ssimokawa if (dg.dma_tag != NULL) 282136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE); 283136467Ssimokawa 284136467Ssimokawa dcons_putc(dc, c); 285136467Ssimokawa 286136467Ssimokawa if (dg.dma_tag != NULL) 287136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE); 288136467Ssimokawa} 289136467Ssimokawastatic int 290136467Ssimokawadcons_open(DEV dev, int flag, int mode, THREAD *td) 291136467Ssimokawa{ 292136467Ssimokawa struct tty *tp; 293136467Ssimokawa int unit, error, s; 294136467Ssimokawa 295136467Ssimokawa unit = minor(dev); 296136467Ssimokawa if (unit != 0) 297136467Ssimokawa return (ENXIO); 298136467Ssimokawa 299154016Sphk tp = dev->si_tty; 300136467Ssimokawa tp->t_oproc = dcons_tty_start; 301136467Ssimokawa tp->t_param = dcons_tty_param; 302136467Ssimokawa tp->t_stop = nottystop; 303136467Ssimokawa tp->t_dev = dev; 304136467Ssimokawa 305136467Ssimokawa error = 0; 306136467Ssimokawa 307136467Ssimokawa s = spltty(); 308136467Ssimokawa if ((tp->t_state & TS_ISOPEN) == 0) { 309136467Ssimokawa tp->t_state |= TS_CARR_ON; 310136680Sphk ttyconsolemode(tp, 0); 311164033Srwatson } else if ((tp->t_state & TS_XCLUDE) && 312164033Srwatson priv_check(td, PRIV_TTY_EXCLUSIVE)) { 313136467Ssimokawa splx(s); 314136467Ssimokawa return (EBUSY); 315136467Ssimokawa } 316136467Ssimokawa splx(s); 317136467Ssimokawa 318136467Ssimokawa#if __FreeBSD_version < 502113 319136467Ssimokawa error = (*linesw[tp->t_line].l_open)(dev, tp); 320136467Ssimokawa#else 321136467Ssimokawa error = ttyld_open(tp, dev); 322136467Ssimokawa#endif 323136467Ssimokawa 324136467Ssimokawa return (error); 325136467Ssimokawa} 326136467Ssimokawa 327136467Ssimokawastatic int 328136467Ssimokawadcons_close(DEV dev, int flag, int mode, THREAD *td) 329136467Ssimokawa{ 330136467Ssimokawa int unit; 331136467Ssimokawa struct tty *tp; 332136467Ssimokawa 333136467Ssimokawa unit = minor(dev); 334136467Ssimokawa if (unit != 0) 335136467Ssimokawa return (ENXIO); 336136467Ssimokawa 337136467Ssimokawa tp = dev->si_tty; 338136467Ssimokawa if (tp->t_state & TS_ISOPEN) { 339136467Ssimokawa#if __FreeBSD_version < 502113 340136467Ssimokawa (*linesw[tp->t_line].l_close)(tp, flag); 341136467Ssimokawa ttyclose(tp); 342136467Ssimokawa#else 343136467Ssimokawa ttyld_close(tp, flag); 344136467Ssimokawa tty_close(tp); 345136467Ssimokawa#endif 346136467Ssimokawa } 347136467Ssimokawa 348136467Ssimokawa return (0); 349136467Ssimokawa} 350136467Ssimokawa 351136467Ssimokawa#if defined(__DragonFly__) || __FreeBSD_version < 500104 352136467Ssimokawastatic int 353136467Ssimokawadcons_ioctl(DEV dev, u_long cmd, caddr_t data, int flag, THREAD *td) 354136467Ssimokawa{ 355136467Ssimokawa int unit; 356136467Ssimokawa struct tty *tp; 357136467Ssimokawa int error; 358136467Ssimokawa 359136467Ssimokawa unit = minor(dev); 360136467Ssimokawa if (unit != 0) 361136467Ssimokawa return (ENXIO); 362136467Ssimokawa 363136467Ssimokawa tp = dev->si_tty; 364136467Ssimokawa error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 365136467Ssimokawa if (error != ENOIOCTL) 366136467Ssimokawa return (error); 367136467Ssimokawa 368136467Ssimokawa error = ttioctl(tp, cmd, data, flag); 369136467Ssimokawa if (error != ENOIOCTL) 370136467Ssimokawa return (error); 371136467Ssimokawa 372136467Ssimokawa return (ENOTTY); 373136467Ssimokawa} 374136467Ssimokawa#endif 375136467Ssimokawa 376136467Ssimokawastatic int 377136467Ssimokawadcons_tty_param(struct tty *tp, struct termios *t) 378136467Ssimokawa{ 379136467Ssimokawa tp->t_ispeed = t->c_ispeed; 380136467Ssimokawa tp->t_ospeed = t->c_ospeed; 381136467Ssimokawa tp->t_cflag = t->c_cflag; 382136467Ssimokawa return 0; 383136467Ssimokawa} 384136467Ssimokawa 385136467Ssimokawastatic void 386136467Ssimokawadcons_tty_start(struct tty *tp) 387136467Ssimokawa{ 388136467Ssimokawa struct dcons_softc *dc; 389136467Ssimokawa int s; 390136467Ssimokawa 391136467Ssimokawa dc = (struct dcons_softc *)tp->t_dev->si_drv1; 392136467Ssimokawa s = spltty(); 393136467Ssimokawa if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { 394136467Ssimokawa ttwwakeup(tp); 395136467Ssimokawa return; 396136467Ssimokawa } 397136467Ssimokawa 398136467Ssimokawa tp->t_state |= TS_BUSY; 399136467Ssimokawa while (tp->t_outq.c_cc != 0) 400136467Ssimokawa dcons_os_putc(dc, getc(&tp->t_outq)); 401136467Ssimokawa tp->t_state &= ~TS_BUSY; 402136467Ssimokawa 403136467Ssimokawa ttwwakeup(tp); 404136467Ssimokawa splx(s); 405136467Ssimokawa} 406136467Ssimokawa 407136467Ssimokawastatic void 408136467Ssimokawadcons_timeout(void *v) 409136467Ssimokawa{ 410136467Ssimokawa struct tty *tp; 411136467Ssimokawa struct dcons_softc *dc; 412136467Ssimokawa int i, c, polltime; 413136467Ssimokawa 414136467Ssimokawa for (i = 0; i < DCONS_NPORT; i ++) { 415136467Ssimokawa dc = &sc[i]; 416136467Ssimokawa tp = ((DEV)dc->dev)->si_tty; 417171867Ssimokawa while ((c = dcons_os_checkc_nopoll(dc)) != -1) 418136467Ssimokawa if (tp->t_state & TS_ISOPEN) 419136467Ssimokawa#if __FreeBSD_version < 502113 420136467Ssimokawa (*linesw[tp->t_line].l_rint)(c, tp); 421136467Ssimokawa#else 422136467Ssimokawa ttyld_rint(tp, c); 423136467Ssimokawa#endif 424136467Ssimokawa } 425136467Ssimokawa polltime = hz / poll_hz; 426136467Ssimokawa if (polltime < 1) 427136467Ssimokawa polltime = 1; 428136467Ssimokawa callout_reset(&dcons_callout, polltime, dcons_timeout, tp); 429136467Ssimokawa} 430136467Ssimokawa 431136467Ssimokawastatic void 432136467Ssimokawadcons_cnprobe(struct consdev *cp) 433136467Ssimokawa{ 434136467Ssimokawa#ifdef __DragonFly__ 435136467Ssimokawa cp->cn_dev = make_dev(&dcons_cdevsw, DCONS_CON, 436136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, "dcons"); 437136467Ssimokawa#elif __FreeBSD_version >= 501109 438136467Ssimokawa sprintf(cp->cn_name, "dcons"); 439136467Ssimokawa#else 440136467Ssimokawa cp->cn_dev = makedev(CDEV_MAJOR, DCONS_CON); 441136467Ssimokawa#endif 442136467Ssimokawa#if DCONS_FORCE_CONSOLE 443136467Ssimokawa cp->cn_pri = CN_REMOTE; 444136467Ssimokawa#else 445136467Ssimokawa cp->cn_pri = CN_NORMAL; 446136467Ssimokawa#endif 447136467Ssimokawa} 448136467Ssimokawa 449136467Ssimokawastatic void 450136467Ssimokawadcons_cninit(struct consdev *cp) 451136467Ssimokawa{ 452136467Ssimokawa dcons_drv_init(0); 453136467Ssimokawa#if CONS_NODEV 454136467Ssimokawa cp->cn_arg 455136467Ssimokawa#else 456136467Ssimokawa cp->cn_dev->si_drv1 457136467Ssimokawa#endif 458136467Ssimokawa = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */ 459136467Ssimokawa} 460136467Ssimokawa 461158959Sphkstatic void 462158959Sphkdcons_cnterm(struct consdev *cp) 463158959Sphk{ 464158959Sphk} 465158959Sphk 466136467Ssimokawa#if CONS_NODEV 467136467Ssimokawastatic int 468136467Ssimokawadcons_cngetc(struct consdev *cp) 469136467Ssimokawa{ 470136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; 471136467Ssimokawa return (dcons_os_checkc(dc)); 472136467Ssimokawa} 473136467Ssimokawastatic void 474136467Ssimokawadcons_cnputc(struct consdev *cp, int c) 475136467Ssimokawa{ 476136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; 477136467Ssimokawa dcons_os_putc(dc, c); 478136467Ssimokawa} 479136467Ssimokawa#else 480136467Ssimokawastatic int 481136467Ssimokawadcons_cngetc(DEV dev) 482136467Ssimokawa{ 483136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 484136467Ssimokawa return (dcons_os_getc(dc)); 485136467Ssimokawa} 486136467Ssimokawastatic int 487136467Ssimokawadcons_cncheckc(DEV dev) 488136467Ssimokawa{ 489136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 490136467Ssimokawa return (dcons_os_checkc(dc)); 491136467Ssimokawa} 492136467Ssimokawastatic void 493136467Ssimokawadcons_cnputc(DEV dev, int c) 494136467Ssimokawa{ 495136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 496136467Ssimokawa dcons_os_putc(dc, c); 497136467Ssimokawa} 498136467Ssimokawa#endif 499136467Ssimokawa 500136467Ssimokawastatic int 501136467Ssimokawadcons_drv_init(int stage) 502136467Ssimokawa{ 503137013Ssimokawa#if defined(__i386__) || defined(__amd64__) 504136898Ssimokawa quad_t addr, size; 505136498Ssimokawa#endif 506136467Ssimokawa 507136467Ssimokawa if (drv_init) 508136467Ssimokawa return(drv_init); 509136467Ssimokawa 510136467Ssimokawa drv_init = -1; 511136467Ssimokawa 512136467Ssimokawa bzero(&dg, sizeof(dg)); 513136467Ssimokawa dcons_conf = &dg; 514136467Ssimokawa dg.cdev = &dcons_consdev; 515136467Ssimokawa dg.buf = NULL; 516136467Ssimokawa dg.size = DCONS_BUF_SIZE; 517136467Ssimokawa 518137013Ssimokawa#if defined(__i386__) || defined(__amd64__) 519136898Ssimokawa if (getenv_quad("dcons.addr", &addr) > 0 && 520136898Ssimokawa getenv_quad("dcons.size", &size) > 0) { 521137013Ssimokawa#ifdef __i386__ 522136898Ssimokawa vm_paddr_t pa; 523136898Ssimokawa /* 524136898Ssimokawa * Allow read/write access to dcons buffer. 525136898Ssimokawa */ 526136898Ssimokawa for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE) 527136898Ssimokawa *vtopte(KERNBASE + pa) |= PG_RW; 528136898Ssimokawa invltlb(); 529137013Ssimokawa#endif 530136467Ssimokawa /* XXX P to V */ 531136898Ssimokawa dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr); 532136467Ssimokawa dg.size = size; 533136467Ssimokawa if (dcons_load_buffer(dg.buf, dg.size, sc) < 0) 534136467Ssimokawa dg.buf = NULL; 535136467Ssimokawa } 536136467Ssimokawa#endif 537136467Ssimokawa if (dg.buf != NULL) 538136467Ssimokawa goto ok; 539136467Ssimokawa 540136467Ssimokawa#ifndef KLD_MODULE 541136467Ssimokawa if (stage == 0) { /* XXX or cold */ 542136467Ssimokawa /* 543136467Ssimokawa * DCONS_FORCE_CONSOLE == 1 and statically linked. 544136467Ssimokawa * called from cninit(). can't use contigmalloc yet . 545136467Ssimokawa */ 546136467Ssimokawa dg.buf = (struct dcons_buf *) bssbuf; 547136467Ssimokawa dcons_init(dg.buf, dg.size, sc); 548136467Ssimokawa } else 549136467Ssimokawa#endif 550136467Ssimokawa { 551136467Ssimokawa /* 552136467Ssimokawa * DCONS_FORCE_CONSOLE == 0 or kernel module case. 553136467Ssimokawa * if the module is loaded after boot, 554136467Ssimokawa * bssbuf could be non-continuous. 555136467Ssimokawa */ 556136467Ssimokawa dg.buf = (struct dcons_buf *) contigmalloc(dg.size, 557136467Ssimokawa M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul); 558136467Ssimokawa dcons_init(dg.buf, dg.size, sc); 559136467Ssimokawa } 560136467Ssimokawa 561136467Ssimokawaok: 562136467Ssimokawa dcons_buf = dg.buf; 563136467Ssimokawa 564136467Ssimokawa#if __FreeBSD_version < 502122 565153110Sru#if defined(DDB) && DCONS_FORCE_GDB 566136467Ssimokawa#if CONS_NODEV 567136467Ssimokawa gdbconsdev.cn_arg = (void *)&sc[DCONS_GDB]; 568136467Ssimokawa#if __FreeBSD_version >= 501109 569136467Ssimokawa sprintf(gdbconsdev.cn_name, "dgdb"); 570136467Ssimokawa#endif 571136467Ssimokawa gdb_arg = &gdbconsdev; 572136467Ssimokawa#elif defined(__DragonFly__) 573136467Ssimokawa gdbdev = make_dev(&dcons_cdevsw, DCONS_GDB, 574136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, "dgdb"); 575136467Ssimokawa#else 576136467Ssimokawa gdbdev = makedev(CDEV_MAJOR, DCONS_GDB); 577136467Ssimokawa#endif 578136467Ssimokawa gdb_getc = dcons_cngetc; 579136467Ssimokawa gdb_putc = dcons_cnputc; 580136467Ssimokawa#endif 581136467Ssimokawa#endif 582136467Ssimokawa drv_init = 1; 583136467Ssimokawa 584136467Ssimokawa return 0; 585136467Ssimokawa} 586136467Ssimokawa 587136467Ssimokawa 588136467Ssimokawastatic int 589136467Ssimokawadcons_attach_port(int port, char *name, int flags) 590136467Ssimokawa{ 591136467Ssimokawa struct dcons_softc *dc; 592136467Ssimokawa struct tty *tp; 593136467Ssimokawa DEV dev; 594136467Ssimokawa 595136467Ssimokawa dc = &sc[port]; 596136467Ssimokawa dc->flags = flags; 597136467Ssimokawa dev = make_dev(&dcons_cdevsw, port, 598136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, name); 599136467Ssimokawa dc->dev = (void *)dev; 600154016Sphk tp = ttyalloc(); 601136467Ssimokawa 602136467Ssimokawa dev->si_drv1 = (void *)dc; 603136467Ssimokawa dev->si_tty = tp; 604136467Ssimokawa 605136467Ssimokawa tp->t_oproc = dcons_tty_start; 606136467Ssimokawa tp->t_param = dcons_tty_param; 607136467Ssimokawa tp->t_stop = nottystop; 608136467Ssimokawa tp->t_dev = dc->dev; 609136467Ssimokawa 610136467Ssimokawa return(0); 611136467Ssimokawa} 612136467Ssimokawa 613136467Ssimokawastatic int 614136467Ssimokawadcons_attach(void) 615136467Ssimokawa{ 616136467Ssimokawa int polltime; 617136467Ssimokawa 618136467Ssimokawa#ifdef __DragonFly__ 619136467Ssimokawa cdevsw_add(&dcons_cdevsw, -1, 0); 620136467Ssimokawa#endif 621136467Ssimokawa dcons_attach_port(DCONS_CON, "dcons", 0); 622136467Ssimokawa dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB); 623136467Ssimokawa#if __FreeBSD_version < 500000 624136467Ssimokawa callout_init(&dcons_callout); 625136467Ssimokawa#else 626136467Ssimokawa callout_init(&dcons_callout, 0); 627136467Ssimokawa#endif 628136467Ssimokawa polltime = hz / poll_hz; 629136467Ssimokawa if (polltime < 1) 630136467Ssimokawa polltime = 1; 631136467Ssimokawa callout_reset(&dcons_callout, polltime, dcons_timeout, NULL); 632136467Ssimokawa return(0); 633136467Ssimokawa} 634136467Ssimokawa 635136467Ssimokawastatic int 636136467Ssimokawadcons_detach(int port) 637136467Ssimokawa{ 638136467Ssimokawa struct tty *tp; 639136467Ssimokawa struct dcons_softc *dc; 640136467Ssimokawa 641136467Ssimokawa dc = &sc[port]; 642136467Ssimokawa 643136467Ssimokawa tp = ((DEV)dc->dev)->si_tty; 644136467Ssimokawa 645136467Ssimokawa if (tp->t_state & TS_ISOPEN) { 646136467Ssimokawa printf("dcons: still opened\n"); 647136467Ssimokawa#if __FreeBSD_version < 502113 648136467Ssimokawa (*linesw[tp->t_line].l_close)(tp, 0); 649136467Ssimokawa tp->t_gen++; 650136467Ssimokawa ttyclose(tp); 651136467Ssimokawa ttwakeup(tp); 652136467Ssimokawa ttwwakeup(tp); 653136467Ssimokawa#else 654136467Ssimokawa ttyld_close(tp, 0); 655136467Ssimokawa tty_close(tp); 656136467Ssimokawa#endif 657136467Ssimokawa } 658136467Ssimokawa /* XXX 659136467Ssimokawa * must wait until all device are closed. 660136467Ssimokawa */ 661136467Ssimokawa#ifdef __DragonFly__ 662136467Ssimokawa tsleep((void *)dc, 0, "dcodtc", hz/4); 663136467Ssimokawa#else 664136467Ssimokawa tsleep((void *)dc, PWAIT, "dcodtc", hz/4); 665136467Ssimokawa#endif 666136467Ssimokawa destroy_dev(dc->dev); 667136467Ssimokawa 668136467Ssimokawa return(0); 669136467Ssimokawa} 670136467Ssimokawa 671136467Ssimokawa 672136467Ssimokawa/* cnXXX works only for FreeBSD-5 */ 673136467Ssimokawastatic int 674136467Ssimokawadcons_modevent(module_t mode, int type, void *data) 675136467Ssimokawa{ 676136467Ssimokawa int err = 0, ret; 677136467Ssimokawa 678136467Ssimokawa switch (type) { 679136467Ssimokawa case MOD_LOAD: 680136467Ssimokawa ret = dcons_drv_init(1); 681136467Ssimokawa dcons_attach(); 682136467Ssimokawa#if __FreeBSD_version >= 500000 683136467Ssimokawa if (ret == 0) { 684136467Ssimokawa dcons_cnprobe(&dcons_consdev); 685136467Ssimokawa dcons_cninit(&dcons_consdev); 686136467Ssimokawa cnadd(&dcons_consdev); 687136467Ssimokawa } 688136467Ssimokawa#endif 689136467Ssimokawa break; 690136467Ssimokawa case MOD_UNLOAD: 691136467Ssimokawa printf("dcons: unload\n"); 692136467Ssimokawa callout_stop(&dcons_callout); 693136467Ssimokawa#if __FreeBSD_version < 502122 694153110Sru#if defined(DDB) && DCONS_FORCE_GDB 695136467Ssimokawa#if CONS_NODEV 696136467Ssimokawa gdb_arg = NULL; 697136467Ssimokawa#else 698136467Ssimokawa gdbdev = NULL; 699136467Ssimokawa#endif 700136467Ssimokawa#endif 701136467Ssimokawa#endif 702136467Ssimokawa#if __FreeBSD_version >= 500000 703136467Ssimokawa cnremove(&dcons_consdev); 704136467Ssimokawa#endif 705136467Ssimokawa dcons_detach(DCONS_CON); 706136467Ssimokawa dcons_detach(DCONS_GDB); 707136467Ssimokawa dg.buf->magic = 0; 708136467Ssimokawa 709136467Ssimokawa contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF); 710136467Ssimokawa 711136467Ssimokawa break; 712136467Ssimokawa case MOD_SHUTDOWN: 713170426Ssimokawa#if 0 /* Keep connection after halt */ 714136467Ssimokawa dg.buf->magic = 0; 715170426Ssimokawa#endif 716136467Ssimokawa break; 717136467Ssimokawa default: 718136467Ssimokawa err = EOPNOTSUPP; 719136467Ssimokawa break; 720136467Ssimokawa } 721136467Ssimokawa return(err); 722136467Ssimokawa} 723136467Ssimokawa 724170017Ssimokawa#if defined(GDB) && (__FreeBSD_version >= 502122) 725136467Ssimokawa/* Debugger interface */ 726136467Ssimokawa 727136467Ssimokawastatic int 728136467Ssimokawadcons_dbg_probe(void) 729136467Ssimokawa{ 730170537Ssimokawa int dcons_gdb; 731170537Ssimokawa 732170537Ssimokawa if (getenv_int("dcons_gdb", &dcons_gdb) == 0) 733170537Ssimokawa return (-1); 734170537Ssimokawa return (dcons_gdb); 735136467Ssimokawa} 736136467Ssimokawa 737136467Ssimokawastatic void 738136467Ssimokawadcons_dbg_init(void) 739136467Ssimokawa{ 740136467Ssimokawa} 741136467Ssimokawa 742136467Ssimokawastatic void 743136467Ssimokawadcons_dbg_term(void) 744136467Ssimokawa{ 745136467Ssimokawa} 746136467Ssimokawa 747136467Ssimokawastatic void 748136467Ssimokawadcons_dbg_putc(int c) 749136467Ssimokawa{ 750136467Ssimokawa struct dcons_softc *dc = &sc[DCONS_GDB]; 751136467Ssimokawa dcons_os_putc(dc, c); 752136467Ssimokawa} 753136467Ssimokawa 754136467Ssimokawastatic int 755136467Ssimokawadcons_dbg_getc(void) 756136467Ssimokawa{ 757136467Ssimokawa struct dcons_softc *dc = &sc[DCONS_GDB]; 758136467Ssimokawa return (dcons_os_getc(dc)); 759136467Ssimokawa} 760136467Ssimokawa#endif 761136467Ssimokawa 762136467SsimokawaDEV_MODULE(dcons, dcons_modevent, NULL); 763136467SsimokawaMODULE_VERSION(dcons, DCONS_VERSION); 764