dcons_os.c revision 170537
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 170537 2007-06-11 04:08:50Z 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 244136467Ssimokawadcons_os_checkc(struct dcons_softc *dc) 245136467Ssimokawa{ 246136467Ssimokawa int c; 247136467Ssimokawa 248170408Ssimokawa EVENTHANDLER_INVOKE(dcons_poll, 0); 249136467Ssimokawa if (dg.dma_tag != NULL) 250136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD); 251136467Ssimokawa 252136467Ssimokawa c = dcons_check_break(dc, dcons_checkc(dc)); 253136467Ssimokawa 254136467Ssimokawa if (dg.dma_tag != NULL) 255136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD); 256136467Ssimokawa 257136467Ssimokawa return (c); 258136467Ssimokawa} 259136467Ssimokawa 260170017Ssimokawa#if defined(GDB) || !defined(CONS_NODEV) 261136467Ssimokawastatic int 262136467Ssimokawadcons_os_getc(struct dcons_softc *dc) 263136467Ssimokawa{ 264136467Ssimokawa int c; 265136467Ssimokawa 266136467Ssimokawa while ((c = dcons_os_checkc(dc)) == -1); 267136467Ssimokawa 268136467Ssimokawa return (c & 0xff); 269136467Ssimokawa} 270170017Ssimokawa#endif 271136467Ssimokawa 272136467Ssimokawastatic void 273136467Ssimokawadcons_os_putc(struct dcons_softc *dc, int c) 274136467Ssimokawa{ 275136467Ssimokawa if (dg.dma_tag != NULL) 276136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE); 277136467Ssimokawa 278136467Ssimokawa dcons_putc(dc, c); 279136467Ssimokawa 280136467Ssimokawa if (dg.dma_tag != NULL) 281136467Ssimokawa bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE); 282136467Ssimokawa} 283136467Ssimokawastatic int 284136467Ssimokawadcons_open(DEV dev, int flag, int mode, THREAD *td) 285136467Ssimokawa{ 286136467Ssimokawa struct tty *tp; 287136467Ssimokawa int unit, error, s; 288136467Ssimokawa 289136467Ssimokawa unit = minor(dev); 290136467Ssimokawa if (unit != 0) 291136467Ssimokawa return (ENXIO); 292136467Ssimokawa 293154016Sphk tp = dev->si_tty; 294136467Ssimokawa tp->t_oproc = dcons_tty_start; 295136467Ssimokawa tp->t_param = dcons_tty_param; 296136467Ssimokawa tp->t_stop = nottystop; 297136467Ssimokawa tp->t_dev = dev; 298136467Ssimokawa 299136467Ssimokawa error = 0; 300136467Ssimokawa 301136467Ssimokawa s = spltty(); 302136467Ssimokawa if ((tp->t_state & TS_ISOPEN) == 0) { 303136467Ssimokawa tp->t_state |= TS_CARR_ON; 304136680Sphk ttyconsolemode(tp, 0); 305164033Srwatson } else if ((tp->t_state & TS_XCLUDE) && 306164033Srwatson priv_check(td, PRIV_TTY_EXCLUSIVE)) { 307136467Ssimokawa splx(s); 308136467Ssimokawa return (EBUSY); 309136467Ssimokawa } 310136467Ssimokawa splx(s); 311136467Ssimokawa 312136467Ssimokawa#if __FreeBSD_version < 502113 313136467Ssimokawa error = (*linesw[tp->t_line].l_open)(dev, tp); 314136467Ssimokawa#else 315136467Ssimokawa error = ttyld_open(tp, dev); 316136467Ssimokawa#endif 317136467Ssimokawa 318136467Ssimokawa return (error); 319136467Ssimokawa} 320136467Ssimokawa 321136467Ssimokawastatic int 322136467Ssimokawadcons_close(DEV dev, int flag, int mode, THREAD *td) 323136467Ssimokawa{ 324136467Ssimokawa int unit; 325136467Ssimokawa struct tty *tp; 326136467Ssimokawa 327136467Ssimokawa unit = minor(dev); 328136467Ssimokawa if (unit != 0) 329136467Ssimokawa return (ENXIO); 330136467Ssimokawa 331136467Ssimokawa tp = dev->si_tty; 332136467Ssimokawa if (tp->t_state & TS_ISOPEN) { 333136467Ssimokawa#if __FreeBSD_version < 502113 334136467Ssimokawa (*linesw[tp->t_line].l_close)(tp, flag); 335136467Ssimokawa ttyclose(tp); 336136467Ssimokawa#else 337136467Ssimokawa ttyld_close(tp, flag); 338136467Ssimokawa tty_close(tp); 339136467Ssimokawa#endif 340136467Ssimokawa } 341136467Ssimokawa 342136467Ssimokawa return (0); 343136467Ssimokawa} 344136467Ssimokawa 345136467Ssimokawa#if defined(__DragonFly__) || __FreeBSD_version < 500104 346136467Ssimokawastatic int 347136467Ssimokawadcons_ioctl(DEV dev, u_long cmd, caddr_t data, int flag, THREAD *td) 348136467Ssimokawa{ 349136467Ssimokawa int unit; 350136467Ssimokawa struct tty *tp; 351136467Ssimokawa int error; 352136467Ssimokawa 353136467Ssimokawa unit = minor(dev); 354136467Ssimokawa if (unit != 0) 355136467Ssimokawa return (ENXIO); 356136467Ssimokawa 357136467Ssimokawa tp = dev->si_tty; 358136467Ssimokawa error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 359136467Ssimokawa if (error != ENOIOCTL) 360136467Ssimokawa return (error); 361136467Ssimokawa 362136467Ssimokawa error = ttioctl(tp, cmd, data, flag); 363136467Ssimokawa if (error != ENOIOCTL) 364136467Ssimokawa return (error); 365136467Ssimokawa 366136467Ssimokawa return (ENOTTY); 367136467Ssimokawa} 368136467Ssimokawa#endif 369136467Ssimokawa 370136467Ssimokawastatic int 371136467Ssimokawadcons_tty_param(struct tty *tp, struct termios *t) 372136467Ssimokawa{ 373136467Ssimokawa tp->t_ispeed = t->c_ispeed; 374136467Ssimokawa tp->t_ospeed = t->c_ospeed; 375136467Ssimokawa tp->t_cflag = t->c_cflag; 376136467Ssimokawa return 0; 377136467Ssimokawa} 378136467Ssimokawa 379136467Ssimokawastatic void 380136467Ssimokawadcons_tty_start(struct tty *tp) 381136467Ssimokawa{ 382136467Ssimokawa struct dcons_softc *dc; 383136467Ssimokawa int s; 384136467Ssimokawa 385136467Ssimokawa dc = (struct dcons_softc *)tp->t_dev->si_drv1; 386136467Ssimokawa s = spltty(); 387136467Ssimokawa if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { 388136467Ssimokawa ttwwakeup(tp); 389136467Ssimokawa return; 390136467Ssimokawa } 391136467Ssimokawa 392136467Ssimokawa tp->t_state |= TS_BUSY; 393136467Ssimokawa while (tp->t_outq.c_cc != 0) 394136467Ssimokawa dcons_os_putc(dc, getc(&tp->t_outq)); 395136467Ssimokawa tp->t_state &= ~TS_BUSY; 396136467Ssimokawa 397136467Ssimokawa ttwwakeup(tp); 398136467Ssimokawa splx(s); 399136467Ssimokawa} 400136467Ssimokawa 401136467Ssimokawastatic void 402136467Ssimokawadcons_timeout(void *v) 403136467Ssimokawa{ 404136467Ssimokawa struct tty *tp; 405136467Ssimokawa struct dcons_softc *dc; 406136467Ssimokawa int i, c, polltime; 407136467Ssimokawa 408136467Ssimokawa for (i = 0; i < DCONS_NPORT; i ++) { 409136467Ssimokawa dc = &sc[i]; 410136467Ssimokawa tp = ((DEV)dc->dev)->si_tty; 411136467Ssimokawa while ((c = dcons_os_checkc(dc)) != -1) 412136467Ssimokawa if (tp->t_state & TS_ISOPEN) 413136467Ssimokawa#if __FreeBSD_version < 502113 414136467Ssimokawa (*linesw[tp->t_line].l_rint)(c, tp); 415136467Ssimokawa#else 416136467Ssimokawa ttyld_rint(tp, c); 417136467Ssimokawa#endif 418136467Ssimokawa } 419136467Ssimokawa polltime = hz / poll_hz; 420136467Ssimokawa if (polltime < 1) 421136467Ssimokawa polltime = 1; 422136467Ssimokawa callout_reset(&dcons_callout, polltime, dcons_timeout, tp); 423136467Ssimokawa} 424136467Ssimokawa 425136467Ssimokawastatic void 426136467Ssimokawadcons_cnprobe(struct consdev *cp) 427136467Ssimokawa{ 428136467Ssimokawa#ifdef __DragonFly__ 429136467Ssimokawa cp->cn_dev = make_dev(&dcons_cdevsw, DCONS_CON, 430136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, "dcons"); 431136467Ssimokawa#elif __FreeBSD_version >= 501109 432136467Ssimokawa sprintf(cp->cn_name, "dcons"); 433136467Ssimokawa#else 434136467Ssimokawa cp->cn_dev = makedev(CDEV_MAJOR, DCONS_CON); 435136467Ssimokawa#endif 436136467Ssimokawa#if DCONS_FORCE_CONSOLE 437136467Ssimokawa cp->cn_pri = CN_REMOTE; 438136467Ssimokawa#else 439136467Ssimokawa cp->cn_pri = CN_NORMAL; 440136467Ssimokawa#endif 441136467Ssimokawa} 442136467Ssimokawa 443136467Ssimokawastatic void 444136467Ssimokawadcons_cninit(struct consdev *cp) 445136467Ssimokawa{ 446136467Ssimokawa dcons_drv_init(0); 447136467Ssimokawa#if CONS_NODEV 448136467Ssimokawa cp->cn_arg 449136467Ssimokawa#else 450136467Ssimokawa cp->cn_dev->si_drv1 451136467Ssimokawa#endif 452136467Ssimokawa = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */ 453136467Ssimokawa} 454136467Ssimokawa 455158959Sphkstatic void 456158959Sphkdcons_cnterm(struct consdev *cp) 457158959Sphk{ 458158959Sphk} 459158959Sphk 460136467Ssimokawa#if CONS_NODEV 461136467Ssimokawastatic int 462136467Ssimokawadcons_cngetc(struct consdev *cp) 463136467Ssimokawa{ 464136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; 465136467Ssimokawa return (dcons_os_checkc(dc)); 466136467Ssimokawa} 467136467Ssimokawastatic void 468136467Ssimokawadcons_cnputc(struct consdev *cp, int c) 469136467Ssimokawa{ 470136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg; 471136467Ssimokawa dcons_os_putc(dc, c); 472136467Ssimokawa} 473136467Ssimokawa#else 474136467Ssimokawastatic int 475136467Ssimokawadcons_cngetc(DEV dev) 476136467Ssimokawa{ 477136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 478136467Ssimokawa return (dcons_os_getc(dc)); 479136467Ssimokawa} 480136467Ssimokawastatic int 481136467Ssimokawadcons_cncheckc(DEV dev) 482136467Ssimokawa{ 483136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 484136467Ssimokawa return (dcons_os_checkc(dc)); 485136467Ssimokawa} 486136467Ssimokawastatic void 487136467Ssimokawadcons_cnputc(DEV dev, int c) 488136467Ssimokawa{ 489136467Ssimokawa struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1; 490136467Ssimokawa dcons_os_putc(dc, c); 491136467Ssimokawa} 492136467Ssimokawa#endif 493136467Ssimokawa 494136467Ssimokawastatic int 495136467Ssimokawadcons_drv_init(int stage) 496136467Ssimokawa{ 497137013Ssimokawa#if defined(__i386__) || defined(__amd64__) 498136898Ssimokawa quad_t addr, size; 499136498Ssimokawa#endif 500136467Ssimokawa 501136467Ssimokawa if (drv_init) 502136467Ssimokawa return(drv_init); 503136467Ssimokawa 504136467Ssimokawa drv_init = -1; 505136467Ssimokawa 506136467Ssimokawa bzero(&dg, sizeof(dg)); 507136467Ssimokawa dcons_conf = &dg; 508136467Ssimokawa dg.cdev = &dcons_consdev; 509136467Ssimokawa dg.buf = NULL; 510136467Ssimokawa dg.size = DCONS_BUF_SIZE; 511136467Ssimokawa 512137013Ssimokawa#if defined(__i386__) || defined(__amd64__) 513136898Ssimokawa if (getenv_quad("dcons.addr", &addr) > 0 && 514136898Ssimokawa getenv_quad("dcons.size", &size) > 0) { 515137013Ssimokawa#ifdef __i386__ 516136898Ssimokawa vm_paddr_t pa; 517136898Ssimokawa /* 518136898Ssimokawa * Allow read/write access to dcons buffer. 519136898Ssimokawa */ 520136898Ssimokawa for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE) 521136898Ssimokawa *vtopte(KERNBASE + pa) |= PG_RW; 522136898Ssimokawa invltlb(); 523137013Ssimokawa#endif 524136467Ssimokawa /* XXX P to V */ 525136898Ssimokawa dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr); 526136467Ssimokawa dg.size = size; 527136467Ssimokawa if (dcons_load_buffer(dg.buf, dg.size, sc) < 0) 528136467Ssimokawa dg.buf = NULL; 529136467Ssimokawa } 530136467Ssimokawa#endif 531136467Ssimokawa if (dg.buf != NULL) 532136467Ssimokawa goto ok; 533136467Ssimokawa 534136467Ssimokawa#ifndef KLD_MODULE 535136467Ssimokawa if (stage == 0) { /* XXX or cold */ 536136467Ssimokawa /* 537136467Ssimokawa * DCONS_FORCE_CONSOLE == 1 and statically linked. 538136467Ssimokawa * called from cninit(). can't use contigmalloc yet . 539136467Ssimokawa */ 540136467Ssimokawa dg.buf = (struct dcons_buf *) bssbuf; 541136467Ssimokawa dcons_init(dg.buf, dg.size, sc); 542136467Ssimokawa } else 543136467Ssimokawa#endif 544136467Ssimokawa { 545136467Ssimokawa /* 546136467Ssimokawa * DCONS_FORCE_CONSOLE == 0 or kernel module case. 547136467Ssimokawa * if the module is loaded after boot, 548136467Ssimokawa * bssbuf could be non-continuous. 549136467Ssimokawa */ 550136467Ssimokawa dg.buf = (struct dcons_buf *) contigmalloc(dg.size, 551136467Ssimokawa M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul); 552136467Ssimokawa dcons_init(dg.buf, dg.size, sc); 553136467Ssimokawa } 554136467Ssimokawa 555136467Ssimokawaok: 556136467Ssimokawa dcons_buf = dg.buf; 557136467Ssimokawa 558136467Ssimokawa#if __FreeBSD_version < 502122 559153110Sru#if defined(DDB) && DCONS_FORCE_GDB 560136467Ssimokawa#if CONS_NODEV 561136467Ssimokawa gdbconsdev.cn_arg = (void *)&sc[DCONS_GDB]; 562136467Ssimokawa#if __FreeBSD_version >= 501109 563136467Ssimokawa sprintf(gdbconsdev.cn_name, "dgdb"); 564136467Ssimokawa#endif 565136467Ssimokawa gdb_arg = &gdbconsdev; 566136467Ssimokawa#elif defined(__DragonFly__) 567136467Ssimokawa gdbdev = make_dev(&dcons_cdevsw, DCONS_GDB, 568136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, "dgdb"); 569136467Ssimokawa#else 570136467Ssimokawa gdbdev = makedev(CDEV_MAJOR, DCONS_GDB); 571136467Ssimokawa#endif 572136467Ssimokawa gdb_getc = dcons_cngetc; 573136467Ssimokawa gdb_putc = dcons_cnputc; 574136467Ssimokawa#endif 575136467Ssimokawa#endif 576136467Ssimokawa drv_init = 1; 577136467Ssimokawa 578136467Ssimokawa return 0; 579136467Ssimokawa} 580136467Ssimokawa 581136467Ssimokawa 582136467Ssimokawastatic int 583136467Ssimokawadcons_attach_port(int port, char *name, int flags) 584136467Ssimokawa{ 585136467Ssimokawa struct dcons_softc *dc; 586136467Ssimokawa struct tty *tp; 587136467Ssimokawa DEV dev; 588136467Ssimokawa 589136467Ssimokawa dc = &sc[port]; 590136467Ssimokawa dc->flags = flags; 591136467Ssimokawa dev = make_dev(&dcons_cdevsw, port, 592136467Ssimokawa UID_ROOT, GID_WHEEL, 0600, name); 593136467Ssimokawa dc->dev = (void *)dev; 594154016Sphk tp = ttyalloc(); 595136467Ssimokawa 596136467Ssimokawa dev->si_drv1 = (void *)dc; 597136467Ssimokawa dev->si_tty = tp; 598136467Ssimokawa 599136467Ssimokawa tp->t_oproc = dcons_tty_start; 600136467Ssimokawa tp->t_param = dcons_tty_param; 601136467Ssimokawa tp->t_stop = nottystop; 602136467Ssimokawa tp->t_dev = dc->dev; 603136467Ssimokawa 604136467Ssimokawa return(0); 605136467Ssimokawa} 606136467Ssimokawa 607136467Ssimokawastatic int 608136467Ssimokawadcons_attach(void) 609136467Ssimokawa{ 610136467Ssimokawa int polltime; 611136467Ssimokawa 612136467Ssimokawa#ifdef __DragonFly__ 613136467Ssimokawa cdevsw_add(&dcons_cdevsw, -1, 0); 614136467Ssimokawa#endif 615136467Ssimokawa dcons_attach_port(DCONS_CON, "dcons", 0); 616136467Ssimokawa dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB); 617136467Ssimokawa#if __FreeBSD_version < 500000 618136467Ssimokawa callout_init(&dcons_callout); 619136467Ssimokawa#else 620136467Ssimokawa callout_init(&dcons_callout, 0); 621136467Ssimokawa#endif 622136467Ssimokawa polltime = hz / poll_hz; 623136467Ssimokawa if (polltime < 1) 624136467Ssimokawa polltime = 1; 625136467Ssimokawa callout_reset(&dcons_callout, polltime, dcons_timeout, NULL); 626136467Ssimokawa return(0); 627136467Ssimokawa} 628136467Ssimokawa 629136467Ssimokawastatic int 630136467Ssimokawadcons_detach(int port) 631136467Ssimokawa{ 632136467Ssimokawa struct tty *tp; 633136467Ssimokawa struct dcons_softc *dc; 634136467Ssimokawa 635136467Ssimokawa dc = &sc[port]; 636136467Ssimokawa 637136467Ssimokawa tp = ((DEV)dc->dev)->si_tty; 638136467Ssimokawa 639136467Ssimokawa if (tp->t_state & TS_ISOPEN) { 640136467Ssimokawa printf("dcons: still opened\n"); 641136467Ssimokawa#if __FreeBSD_version < 502113 642136467Ssimokawa (*linesw[tp->t_line].l_close)(tp, 0); 643136467Ssimokawa tp->t_gen++; 644136467Ssimokawa ttyclose(tp); 645136467Ssimokawa ttwakeup(tp); 646136467Ssimokawa ttwwakeup(tp); 647136467Ssimokawa#else 648136467Ssimokawa ttyld_close(tp, 0); 649136467Ssimokawa tty_close(tp); 650136467Ssimokawa#endif 651136467Ssimokawa } 652136467Ssimokawa /* XXX 653136467Ssimokawa * must wait until all device are closed. 654136467Ssimokawa */ 655136467Ssimokawa#ifdef __DragonFly__ 656136467Ssimokawa tsleep((void *)dc, 0, "dcodtc", hz/4); 657136467Ssimokawa#else 658136467Ssimokawa tsleep((void *)dc, PWAIT, "dcodtc", hz/4); 659136467Ssimokawa#endif 660136467Ssimokawa destroy_dev(dc->dev); 661136467Ssimokawa 662136467Ssimokawa return(0); 663136467Ssimokawa} 664136467Ssimokawa 665136467Ssimokawa 666136467Ssimokawa/* cnXXX works only for FreeBSD-5 */ 667136467Ssimokawastatic int 668136467Ssimokawadcons_modevent(module_t mode, int type, void *data) 669136467Ssimokawa{ 670136467Ssimokawa int err = 0, ret; 671136467Ssimokawa 672136467Ssimokawa switch (type) { 673136467Ssimokawa case MOD_LOAD: 674136467Ssimokawa ret = dcons_drv_init(1); 675136467Ssimokawa dcons_attach(); 676136467Ssimokawa#if __FreeBSD_version >= 500000 677136467Ssimokawa if (ret == 0) { 678136467Ssimokawa dcons_cnprobe(&dcons_consdev); 679136467Ssimokawa dcons_cninit(&dcons_consdev); 680136467Ssimokawa cnadd(&dcons_consdev); 681136467Ssimokawa } 682136467Ssimokawa#endif 683136467Ssimokawa break; 684136467Ssimokawa case MOD_UNLOAD: 685136467Ssimokawa printf("dcons: unload\n"); 686136467Ssimokawa callout_stop(&dcons_callout); 687136467Ssimokawa#if __FreeBSD_version < 502122 688153110Sru#if defined(DDB) && DCONS_FORCE_GDB 689136467Ssimokawa#if CONS_NODEV 690136467Ssimokawa gdb_arg = NULL; 691136467Ssimokawa#else 692136467Ssimokawa gdbdev = NULL; 693136467Ssimokawa#endif 694136467Ssimokawa#endif 695136467Ssimokawa#endif 696136467Ssimokawa#if __FreeBSD_version >= 500000 697136467Ssimokawa cnremove(&dcons_consdev); 698136467Ssimokawa#endif 699136467Ssimokawa dcons_detach(DCONS_CON); 700136467Ssimokawa dcons_detach(DCONS_GDB); 701136467Ssimokawa dg.buf->magic = 0; 702136467Ssimokawa 703136467Ssimokawa contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF); 704136467Ssimokawa 705136467Ssimokawa break; 706136467Ssimokawa case MOD_SHUTDOWN: 707170426Ssimokawa#if 0 /* Keep connection after halt */ 708136467Ssimokawa dg.buf->magic = 0; 709170426Ssimokawa#endif 710136467Ssimokawa break; 711136467Ssimokawa default: 712136467Ssimokawa err = EOPNOTSUPP; 713136467Ssimokawa break; 714136467Ssimokawa } 715136467Ssimokawa return(err); 716136467Ssimokawa} 717136467Ssimokawa 718170017Ssimokawa#if defined(GDB) && (__FreeBSD_version >= 502122) 719136467Ssimokawa/* Debugger interface */ 720136467Ssimokawa 721136467Ssimokawastatic int 722136467Ssimokawadcons_dbg_probe(void) 723136467Ssimokawa{ 724170537Ssimokawa int dcons_gdb; 725170537Ssimokawa 726170537Ssimokawa if (getenv_int("dcons_gdb", &dcons_gdb) == 0) 727170537Ssimokawa return (-1); 728170537Ssimokawa return (dcons_gdb); 729136467Ssimokawa} 730136467Ssimokawa 731136467Ssimokawastatic void 732136467Ssimokawadcons_dbg_init(void) 733136467Ssimokawa{ 734136467Ssimokawa} 735136467Ssimokawa 736136467Ssimokawastatic void 737136467Ssimokawadcons_dbg_term(void) 738136467Ssimokawa{ 739136467Ssimokawa} 740136467Ssimokawa 741136467Ssimokawastatic void 742136467Ssimokawadcons_dbg_putc(int c) 743136467Ssimokawa{ 744136467Ssimokawa struct dcons_softc *dc = &sc[DCONS_GDB]; 745136467Ssimokawa dcons_os_putc(dc, c); 746136467Ssimokawa} 747136467Ssimokawa 748136467Ssimokawastatic int 749136467Ssimokawadcons_dbg_getc(void) 750136467Ssimokawa{ 751136467Ssimokawa struct dcons_softc *dc = &sc[DCONS_GDB]; 752136467Ssimokawa return (dcons_os_getc(dc)); 753136467Ssimokawa} 754136467Ssimokawa#endif 755136467Ssimokawa 756136467SsimokawaDEV_MODULE(dcons, dcons_modevent, NULL); 757136467SsimokawaMODULE_VERSION(dcons, DCONS_VERSION); 758