Switch to dev/syscons/syscons.c.

2 files changed, 1 insertions, 3587 deletions

diff --git a/sys/conf/files.pc98 b/sys/conf/files.pc98
index 30096a2..58a53b6 100644
--- a/sys/conf/files.pc98
+++ b/sys/conf/files.pc98
@@ -129,6 +129,7 @@ dev/syscons/scmouse.c		optional	sc
 dev/syscons/scterm.c		optional	sc
 dev/syscons/scterm-dumb.c	optional	sc
 dev/syscons/scvidctl.c		optional	sc
+dev/syscons/syscons.c		optional	sc
 dev/syscons/sysmouse.c		optional	sc
 geom/geom_bsd.c			standard
 geom/geom_bsd_enc.c		standard
@@ -354,7 +355,6 @@ pc98/pc98/scterm-sck.c		optional	sc
 pc98/pc98/scvtbpc98.c		optional	sc
 pc98/pc98/sio.c			optional	sio
 pc98/pc98/sio_cbus.c		optional	sio isa
-pc98/pc98/syscons.c		optional	sc
 pc98/pc98/syscons_pc98.c	optional	sc
 pc98/pc98/wd.c			count		wdc
 pc98/pc98/wd_cd.c		count		wcd wdc
diff --git a/sys/pc98/pc98/syscons.c b/sys/pc98/pc98/syscons.c
deleted file mode 100644
index 660b832..0000000
--- a/sys/pc98/pc98/syscons.c
+++ /dev/null
@@ -1,3586 +0,0 @@
-/*-
- * Copyright (c) 1992-1998 Sen Schmidt
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer,
- *    without modification, immediately at the beginning of the file.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include "opt_syscons.h"
-#include "opt_splash.h"
-#include "opt_ddb.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/cons.h>
-#include <sys/consio.h>
-#include <sys/eventhandler.h>
-#include <sys/fbio.h>
-#include <sys/kbio.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mutex.h>
-#include <sys/proc.h>
-#include <sys/random.h>
-#include <sys/reboot.h>
-#include <sys/signalvar.h>
-#include <sys/sysctl.h>
-#include <sys/tty.h>
-#include <sys/power.h>
-
-#include <machine/clock.h>
-#include <machine/pc/display.h>
-#ifdef __i386__
-#include <machine/psl.h>
-#include <machine/apm_bios.h>
-#include <machine/frame.h>
-#endif
-
-#include <dev/kbd/kbdreg.h>
-#include <dev/fb/fbreg.h>
-#include <dev/fb/splashreg.h>
-#include <dev/syscons/syscons.h>
-
-#define COLD 0
-#define WARM 1
-
-#define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
-#define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
-
-#define KEYCODE_BS		0x0e		/* "<-- Backspace" key, XXX */
-
-typedef struct default_attr {
-	int		std_color;		/* normal hardware color */
-	int		rev_color;		/* reverse hardware color */
-} default_attr;
-
-static default_attr user_default = {
-    SC_NORM_ATTR,
-    SC_NORM_REV_ATTR,
-};
-
-static default_attr kernel_default = {
-    SC_KERNEL_CONS_ATTR,
-    SC_KERNEL_CONS_REV_ATTR,
-};
-
-static	int		sc_console_unit = -1;
-static	int		sc_saver_keyb_only;
-static  scr_stat    	*sc_console;
-static	struct tty	*sc_console_tty;
-static	void		*kernel_console_ts;
-
-static  char        	init_done = COLD;
-static  char		shutdown_in_progress = FALSE;
-static	char		sc_malloc = FALSE;
-
-static	int		saver_mode = CONS_NO_SAVER; /* LKM/user saver */
-static	int		run_scrn_saver = FALSE;	/* should run the saver? */
-static	int		enable_bell = TRUE; /* enable beeper */
-static	long        	scrn_blank_time = 0;    /* screen saver timeout value */
-#ifdef DEV_SPLASH
-static	int     	scrn_blanked;		/* # of blanked screen */
-static	int		sticky_splash = FALSE;
-
-static	void		none_saver(sc_softc_t *sc, int blank) { }
-static	void		(*current_saver)(sc_softc_t *, int) = none_saver;
-#endif
-
-SYSCTL_NODE(_hw, OID_AUTO, syscons, CTLFLAG_RD, 0, "syscons");
-SYSCTL_NODE(_hw_syscons, OID_AUTO, saver, CTLFLAG_RD, 0, "saver");
-SYSCTL_INT(_hw_syscons_saver, OID_AUTO, keybonly, CTLFLAG_RW,
-    &sc_saver_keyb_only, 0, "screen saver interrupted by input only");
-SYSCTL_INT(_hw_syscons, OID_AUTO, bell, CTLFLAG_RW, &enable_bell, 
-    0, "enable bell");
-#if !defined(SC_NO_FONT_LOADING) && defined(SC_DFLT_FONT)
-#include "font.h"
-#endif
-
-	d_ioctl_t	*sc_user_ioctl;
-
-static	bios_values_t	bios_value;
-
-static	int		enable_panic_key;
-SYSCTL_INT(_machdep, OID_AUTO, enable_panic_key, CTLFLAG_RW, &enable_panic_key,
-	   0, "");
-
-#define SC_CONSOLECTL	255
-
-#define VIRTUAL_TTY(sc, x) (SC_DEV((sc), (x)) != NULL ?	\
-	SC_DEV((sc), (x))->si_tty : NULL)
-#define ISTTYOPEN(tp)	((tp) && ((tp)->t_state & TS_ISOPEN))
-
-static	int		debugger;
-
-/* prototypes */
-static int scvidprobe(int unit, int flags, int cons);
-static int sckbdprobe(int unit, int flags, int cons);
-static void scmeminit(void *arg);
-static int scdevtounit(dev_t dev);
-static kbd_callback_func_t sckbdevent;
-static int scparam(struct tty *tp, struct termios *t);
-static void scstart(struct tty *tp);
-static void scinit(int unit, int flags);
-#if __i386__
-static void scterm(int unit, int flags);
-#endif
-static void scshutdown(void *arg, int howto);
-static u_int scgetc(sc_softc_t *sc, u_int flags);
-#define SCGETC_CN	1
-#define SCGETC_NONBLOCK	2
-static int sccngetch(int flags);
-static void sccnupdate(scr_stat *scp);
-static scr_stat *alloc_scp(sc_softc_t *sc, int vty);
-static void init_scp(sc_softc_t *sc, int vty, scr_stat *scp);
-static timeout_t scrn_timer;
-static int and_region(int *s1, int *e1, int s2, int e2);
-static void scrn_update(scr_stat *scp, int show_cursor);
-
-#ifdef DEV_SPLASH
-static int scsplash_callback(int event, void *arg);
-static void scsplash_saver(sc_softc_t *sc, int show);
-static int add_scrn_saver(void (*this_saver)(sc_softc_t *, int));
-static int remove_scrn_saver(void (*this_saver)(sc_softc_t *, int));
-static int set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border);
-static int restore_scrn_saver_mode(scr_stat *scp, int changemode);
-static void stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int));
-static int wait_scrn_saver_stop(sc_softc_t *sc);
-#define scsplash_stick(stick)		(sticky_splash = (stick))
-#else /* !DEV_SPLASH */
-#define scsplash_stick(stick)
-#endif /* DEV_SPLASH */
-
-static int do_switch_scr(sc_softc_t *sc, int s);
-static int vt_proc_alive(scr_stat *scp);
-static int signal_vt_rel(scr_stat *scp);
-static int signal_vt_acq(scr_stat *scp);
-static int finish_vt_rel(scr_stat *scp, int release, int *s);
-static int finish_vt_acq(scr_stat *scp);
-static void exchange_scr(sc_softc_t *sc);
-static void update_cursor_image(scr_stat *scp);
-static void change_cursor_shape(scr_stat *scp, int flags, int base, int height);
-static int save_kbd_state(scr_stat *scp);
-static int update_kbd_state(scr_stat *scp, int state, int mask);
-static int update_kbd_leds(scr_stat *scp, int which);
-static timeout_t blink_screen;
-
-#define	CDEV_MAJOR	12
-
-static cn_probe_t	sccnprobe;
-static cn_init_t	sccninit;
-static cn_getc_t	sccngetc;
-static cn_checkc_t	sccncheckc;
-static cn_putc_t	sccnputc;
-static cn_dbctl_t	sccndbctl;
-static cn_term_t	sccnterm;
-
-#if __alpha__
-void sccnattach(void);
-#endif
-
-CONS_DRIVER(sc, sccnprobe, sccninit, sccnterm, sccngetc, sccncheckc, sccnputc,
-	    sccndbctl);
-
-static	d_open_t	scopen;
-static	d_close_t	scclose;
-static	d_read_t	scread;
-static	d_ioctl_t	scioctl;
-static	d_mmap_t	scmmap;
-
-static struct cdevsw sc_cdevsw = {
-	.d_open =	scopen,
-	.d_close =	scclose,
-	.d_read =	scread,
-	.d_write =	ttywrite,
-	.d_ioctl =	scioctl,
-	.d_poll =	ttypoll,
-	.d_mmap =	scmmap,
-	.d_name =	"sc",
-	.d_maj =	CDEV_MAJOR,
-	.d_flags =	D_TTY,
-	.d_kqfilter =	ttykqfilter
-};
-
-int
-sc_probe_unit(int unit, int flags)
-{
-    if (!scvidprobe(unit, flags, FALSE)) {
-	if (bootverbose)
-	    printf("sc%d: no video adapter found.\n", unit);
-	return ENXIO;
-    }
-
-    return ((sckbdprobe(unit, flags, FALSE)) ? 0 : ENXIO);
-}
-
-/* probe video adapters, return TRUE if found */ 
-static int
-scvidprobe(int unit, int flags, int cons)
-{
-    /*
-     * Access the video adapter driver through the back door!
-     * Video adapter drivers need to be configured before syscons.
-     * However, when syscons is being probed as the low-level console,
-     * they have not been initialized yet.  We force them to initialize
-     * themselves here. XXX
-     */
-    vid_configure(cons ? VIO_PROBE_ONLY : 0);
-
-    return (vid_find_adapter("*", unit) >= 0);
-}
-
-/* probe the keyboard, return TRUE if found */
-static int
-sckbdprobe(int unit, int flags, int cons)
-{
-    /* access the keyboard driver through the backdoor! */
-    kbd_configure(cons ? KB_CONF_PROBE_ONLY : 0);
-
-    return (kbd_find_keyboard("*", unit) >= 0);
-}
-
-static char
-*adapter_name(video_adapter_t *adp)
-{
-    static struct {
-	int type;
-	char *name[2];
-    } names[] = {
-	{ KD_MONO,	{ "MDA",	"MDA" } },
-	{ KD_HERCULES,	{ "Hercules",	"Hercules" } },
-	{ KD_CGA,	{ "CGA",	"CGA" } },
-	{ KD_EGA,	{ "EGA",	"EGA (mono)" } },
-	{ KD_VGA,	{ "VGA",	"VGA (mono)" } },
-	{ KD_PC98,	{ "PC-98x1",	"PC-98x1" } },
-	{ KD_TGA,	{ "TGA",	"TGA" } },
-	{ -1,		{ "Unknown",	"Unknown" } },
-    };
-    int i;
-
-    for (i = 0; names[i].type != -1; ++i)
-	if (names[i].type == adp->va_type)
-	    break;
-    return names[i].name[(adp->va_flags & V_ADP_COLOR) ? 0 : 1];
-}
-
-int
-sc_attach_unit(int unit, int flags)
-{
-    sc_softc_t *sc;
-    scr_stat *scp;
-#ifdef SC_PIXEL_MODE
-    video_info_t info;
-#endif
-    int vc;
-    dev_t dev;
-
-    flags &= ~SC_KERNEL_CONSOLE;
-
-    if (sc_console_unit == unit) {
-	/*
-	 * If this unit is being used as the system console, we need to
-	 * adjust some variables and buffers before and after scinit().
-	 */
-	/* assert(sc_console != NULL) */
-	flags |= SC_KERNEL_CONSOLE;
-	scmeminit(NULL);
-
-	scinit(unit, flags);
-
-	if (sc_console->tsw->te_size > 0) {
-	    /* assert(sc_console->ts != NULL); */
-	    kernel_console_ts = sc_console->ts;
-	    sc_console->ts = malloc(sc_console->tsw->te_size,
-				    M_DEVBUF, M_WAITOK);
-	    bcopy(kernel_console_ts, sc_console->ts, sc_console->tsw->te_size);
-    	    (*sc_console->tsw->te_default_attr)(sc_console,
-						user_default.std_color,
-						user_default.rev_color);
-	}
-    } else {
-	scinit(unit, flags);
-    }
-
-    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
-    sc->config = flags;
-    scp = SC_STAT(sc->dev[0]);
-    if (sc_console == NULL)	/* sc_console_unit < 0 */
-	sc_console = scp;
-
-#ifdef SC_PIXEL_MODE
-    if ((sc->config & SC_VESA800X600)
-	&& ((*vidsw[sc->adapter]->get_info)(sc->adp, M_VESA_800x600, &info) == 0)) {
-#ifdef DEV_SPLASH
-	if (sc->flags & SC_SPLASH_SCRN)
-	    splash_term(sc->adp);
-#endif
-	sc_set_graphics_mode(scp, NULL, M_VESA_800x600);
-	sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
-	sc->initial_mode = M_VESA_800x600;
-#ifdef DEV_SPLASH
-	/* put up the splash again! */
-	if (sc->flags & SC_SPLASH_SCRN)
-    	    splash_init(sc->adp, scsplash_callback, sc);
-#endif
-    }
-#endif /* SC_PIXEL_MODE */
-
-    /* initialize cursor */
-    if (!ISGRAPHSC(scp))
-    	update_cursor_image(scp);
-
-    /* get screen update going */
-    scrn_timer(sc);
-
-    /* set up the keyboard */
-    kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
-    update_kbd_state(scp, scp->status, LOCK_MASK);
-
-    printf("sc%d: %s <%d virtual consoles, flags=0x%x>\n",
-	   unit, adapter_name(sc->adp), sc->vtys, sc->config);
-    if (bootverbose) {
-	printf("sc%d:", unit);
-    	if (sc->adapter >= 0)
-	    printf(" fb%d", sc->adapter);
-	if (sc->keyboard >= 0)
-	    printf(", kbd%d", sc->keyboard);
-	if (scp->tsw)
-	    printf(", terminal emulator: %s (%s)",
-		   scp->tsw->te_name, scp->tsw->te_desc);
-	printf("\n");
-    }
-
-    /* register a shutdown callback for the kernel console */
-    if (sc_console_unit == unit)
-	EVENTHANDLER_REGISTER(shutdown_pre_sync, scshutdown, 
-			      (void *)(uintptr_t)unit, SHUTDOWN_PRI_DEFAULT);
-
-    for (vc = 0; vc < sc->vtys; vc++) {
-	dev = make_dev(&sc_cdevsw, vc + unit * MAXCONS,
-	    UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc + unit * MAXCONS);
-	sc->dev[vc] = dev;
-	/*
-	 * The first vty already has struct tty and scr_stat initialized
-	 * in scinit().  The other vtys will have these structs when
-	 * first opened.
-	 */
-    }
-
-    dev = make_dev(&sc_cdevsw, SC_CONSOLECTL,
-		   UID_ROOT, GID_WHEEL, 0600, "consolectl");
-    dev->si_tty = sc_console_tty = ttymalloc(sc_console_tty);
-    SC_STAT(dev) = sc_console;
-
-    return 0;
-}
-
-static void
-scmeminit(void *arg)
-{
-    if (sc_malloc)
-	return;
-    sc_malloc = TRUE;
-
-    /*
-     * As soon as malloc() becomes functional, we had better allocate
-     * various buffers for the kernel console.
-     */
-
-    if (sc_console_unit < 0)	/* sc_console == NULL */
-	return;
-
-    /* copy the temporary buffer to the final buffer */
-    sc_alloc_scr_buffer(sc_console, FALSE, FALSE);
-
-#ifndef SC_NO_CUTPASTE
-    sc_alloc_cut_buffer(sc_console, FALSE);
-#endif
-
-#ifndef SC_NO_HISTORY
-    /* initialize history buffer & pointers */
-    sc_alloc_history_buffer(sc_console, 0, 0, FALSE);
-#endif
-}
-
-/* XXX */
-SYSINIT(sc_mem, SI_SUB_KMEM, SI_ORDER_ANY, scmeminit, NULL);
-
-static int
-scdevtounit(dev_t dev)
-{
-    int vty = SC_VTY(dev);
-
-    if (vty == SC_CONSOLECTL)
-	return ((sc_console != NULL) ? sc_console->sc->unit : -1);
-    else if ((vty < 0) || (vty >= MAXCONS*sc_max_unit()))
-	return -1;
-    else
-	return vty/MAXCONS;
-}
-
-static int
-scopen(dev_t dev, int flag, int mode, struct thread *td)
-{
-    int unit = scdevtounit(dev);
-    sc_softc_t *sc;
-    struct tty *tp;
-    scr_stat *scp;
-    keyarg_t key;
-    int error;
-
-    DPRINTF(5, ("scopen: dev:%d,%d, unit:%d, vty:%d\n",
-		major(dev), minor(dev), unit, SC_VTY(dev)));
-
-    sc = sc_get_softc(unit, (sc_console_unit == unit) ? SC_KERNEL_CONSOLE : 0);
-    if (sc == NULL)
-	return ENXIO;
-
-    tp = dev->si_tty = ttymalloc(dev->si_tty);
-    tp->t_oproc = scstart;
-    tp->t_param = scparam;
-    tp->t_stop = nottystop;
-    tp->t_dev = dev;
-    if (!ISTTYOPEN(tp)) {
-	ttychars(tp);
-        /* Use the current setting of the <-- key as default VERASE. */  
-        /* If the Delete key is preferable, an stty is necessary     */
-	if (sc->kbd != NULL) {
-	    key.keynum = KEYCODE_BS;
-	    kbd_ioctl(sc->kbd, GIO_KEYMAPENT, (caddr_t)&key);
-            tp->t_cc[VERASE] = key.key.map[0];
-	}
-	tp->t_iflag = TTYDEF_IFLAG;
-	tp->t_oflag = TTYDEF_OFLAG;
-	tp->t_cflag = TTYDEF_CFLAG;
-	tp->t_lflag = TTYDEF_LFLAG;
-	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
-	scparam(tp, &tp->t_termios);
-	(*linesw[tp->t_line].l_modem)(tp, 1);
-    }
-    else
-	if (tp->t_state & TS_XCLUDE && suser(td))
-	    return(EBUSY);
-
-    error = (*linesw[tp->t_line].l_open)(dev, tp);
-
-    scp = SC_STAT(dev);
-    if (scp == NULL) {
-	scp = SC_STAT(dev) = alloc_scp(sc, SC_VTY(dev));
-	if (ISGRAPHSC(scp))
-	    sc_set_pixel_mode(scp, NULL, COL, ROW, 16);
-    }
-    if (!tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
-	tp->t_winsize.ws_col = scp->xsize;
-	tp->t_winsize.ws_row = scp->ysize;
-    }
-
-    return error;
-}
-
-static int
-scclose(dev_t dev, int flag, int mode, struct thread *td)
-{
-    struct tty *tp = dev->si_tty;
-    scr_stat *scp;
-    int s;
-
-    if (SC_VTY(dev) != SC_CONSOLECTL) {
-	scp = SC_STAT(tp->t_dev);
-	/* were we in the middle of the VT switching process? */
-	DPRINTF(5, ("sc%d: scclose(), ", scp->sc->unit));
-	s = spltty();
-	if ((scp == scp->sc->cur_scp) && (scp->sc->unit == sc_console_unit))
-	    cons_unavail = FALSE;
-	if (finish_vt_rel(scp, TRUE, &s) == 0)	/* force release */
-	    DPRINTF(5, ("reset WAIT_REL, "));
-	if (finish_vt_acq(scp) == 0)		/* force acknowledge */
-	    DPRINTF(5, ("reset WAIT_ACQ, "));
-#if not_yet_done
-	if (scp == &main_console) {
-	    scp->pid = 0;
-	    scp->proc = NULL;
-	    scp->smode.mode = VT_AUTO;
-	}
-	else {
-	    sc_vtb_destroy(&scp->vtb);
-	    sc_vtb_destroy(&scp->scr);
-	    sc_free_history_buffer(scp, scp->ysize);
-	    SC_STAT(dev) = NULL;
-	    free(scp, M_DEVBUF);
-	}
-#else
-	scp->pid = 0;
-	scp->proc = NULL;
-	scp->smode.mode = VT_AUTO;
-#endif
-	scp->kbd_mode = K_XLATE;
-	if (scp == scp->sc->cur_scp)
-	    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
-	DPRINTF(5, ("done.\n"));
-    }
-    spltty();
-    (*linesw[tp->t_line].l_close)(tp, flag);
-    ttyclose(tp);
-    spl0();
-    return(0);
-}
-
-static int
-scread(dev_t dev, struct uio *uio, int flag)
-{
-    if (!sc_saver_keyb_only)
-	sc_touch_scrn_saver();
-    return ttyread(dev, uio, flag);
-}
-
-static int
-sckbdevent(keyboard_t *thiskbd, int event, void *arg)
-{
-    sc_softc_t *sc;
-    struct tty *cur_tty;
-    int c; 
-    size_t len;
-    u_char *cp;
-
-    sc = (sc_softc_t *)arg;
-    /* assert(thiskbd == sc->kbd) */
-
-    switch (event) {
-    case KBDIO_KEYINPUT:
-	break;
-    case KBDIO_UNLOADING:
-	sc->kbd = NULL;
-	sc->keyboard = -1;
-	kbd_release(thiskbd, (void *)&sc->keyboard);
-	return 0;
-    default:
-	return EINVAL;
-    }
-
-    /* 
-     * Loop while there is still input to get from the keyboard.
-     * I don't think this is nessesary, and it doesn't fix
-     * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
-     */
-    while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) {
-
-	cur_tty = VIRTUAL_TTY(sc, sc->cur_scp->index);
-	if (!ISTTYOPEN(cur_tty)) {
-	    cur_tty = sc_console_tty;
-	    if (!ISTTYOPEN(cur_tty))
-		continue;
-	}
-
-	if ((*sc->cur_scp->tsw->te_input)(sc->cur_scp, c, cur_tty))
-	    continue;
-
-	switch (KEYFLAGS(c)) {
-	case 0x0000: /* normal key */
-	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
-	    break;
-	case FKEY:  /* function key, return string */
-	    cp = kbd_get_fkeystr(thiskbd, KEYCHAR(c), &len);
-	    if (cp != NULL) {
-	    	while (len-- >  0)
-		    (*linesw[cur_tty->t_line].l_rint)(*cp++, cur_tty);
-	    }
-	    break;
-	case MKEY:  /* meta is active, prepend ESC */
-	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
-	    (*linesw[cur_tty->t_line].l_rint)(KEYCHAR(c), cur_tty);
-	    break;
-	case BKEY:  /* backtab fixed sequence (esc [ Z) */
-	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
-	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
-	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
-	    break;
-	}
-    }
-
-    sc->cur_scp->status |= MOUSE_HIDDEN;
-
-    return 0;
-}
-
-static int
-scparam(struct tty *tp, struct termios *t)
-{
-    tp->t_ispeed = t->c_ispeed;
-    tp->t_ospeed = t->c_ospeed;
-    tp->t_cflag = t->c_cflag;
-    return 0;
-}
-
-static int
-scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
-{
-    int error;
-    int i;
-    struct tty *tp;
-    sc_softc_t *sc;
-    scr_stat *scp;
-    int s;
-
-    tp = dev->si_tty;
-
-    /* If there is a user_ioctl function call that first */
-    if (sc_user_ioctl) {
-	error = (*sc_user_ioctl)(dev, cmd, data, flag, td);
-	if (error != ENOIOCTL)
-	    return error;
-    }
-
-    error = sc_vid_ioctl(tp, cmd, data, flag, td);
-    if (error != ENOIOCTL)
-	return error;
-
-#ifndef SC_NO_HISTORY
-    error = sc_hist_ioctl(tp, cmd, data, flag, td);
-    if (error != ENOIOCTL)
-	return error;
-#endif
-
-#ifndef SC_NO_SYSMOUSE
-    error = sc_mouse_ioctl(tp, cmd, data, flag, td);
-    if (error != ENOIOCTL)
-	return error;
-#endif
-
-    scp = SC_STAT(tp->t_dev);
-    /* assert(scp != NULL) */
-    /* scp is sc_console, if SC_VTY(dev) == SC_CONSOLECTL. */
-    sc = scp->sc;
-
-    if (scp->tsw) {
-	error = (*scp->tsw->te_ioctl)(scp, tp, cmd, data, flag, td);
-	if (error != ENOIOCTL)
-	    return error;
-    }
-
-    switch (cmd) {  		/* process console hardware related ioctl's */
-
-    case GIO_ATTR:      	/* get current attributes */
-	/* this ioctl is not processed here, but in the terminal emulator */
-	return ENOTTY;
-
-    case GIO_COLOR:     	/* is this a color console ? */
-	*(int *)data = (sc->adp->va_flags & V_ADP_COLOR) ? 1 : 0;
-	return 0;
-
-    case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
-	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
-            return EINVAL;
-	s = spltty();
-	scrn_blank_time = *(int *)data;
-	run_scrn_saver = (scrn_blank_time != 0);
-	splx(s);
-	return 0;
-
-    case CONS_CURSORTYPE:   	/* set cursor type (obsolete) */
-	s = spltty();
-	*(int *)data &= CONS_CURSOR_ATTRS;
-	sc_change_cursor_shape(scp, *(int *)data, -1, -1);
-	splx(s);
-	return 0;
-
-    case CONS_GETCURSORSHAPE:   /* get cursor shape (new interface) */
-	if (((int *)data)[0] & CONS_LOCAL_CURSOR) {
-	    ((int *)data)[0] = scp->curr_curs_attr.flags;
-	    ((int *)data)[1] = scp->curr_curs_attr.base;
-	    ((int *)data)[2] = scp->curr_curs_attr.height;
-	} else {
-	    ((int *)data)[0] = sc->curs_attr.flags;
-	    ((int *)data)[1] = sc->curs_attr.base;
-	    ((int *)data)[2] = sc->curs_attr.height;
-	}
-	return 0;
-
-    case CONS_SETCURSORSHAPE:   /* set cursor shape (new interface) */
-	s = spltty();
-	sc_change_cursor_shape(scp, ((int *)data)[0],
-	    ((int *)data)[1], ((int *)data)[2]);
-	splx(s);
-	return 0;
-
-    case CONS_BELLTYPE: 	/* set bell type sound/visual */
-	if ((*(int *)data) & 0x01)
-	    sc->flags |= SC_VISUAL_BELL;
-	else
-	    sc->flags &= ~SC_VISUAL_BELL;
-	if ((*(int *)data) & 0x02)
-	    sc->flags |= SC_QUIET_BELL;
-	else
-	    sc->flags &= ~SC_QUIET_BELL;
-	return 0;
-
-    case CONS_GETINFO:  	/* get current (virtual) console info */
-    {
-	vid_info_t *ptr = (vid_info_t*)data;
-	if (ptr->size == sizeof(struct vid_info)) {
-	    ptr->m_num = sc->cur_scp->index;
-	    ptr->font_size = scp->font_size;
-	    ptr->mv_col = scp->xpos;
-	    ptr->mv_row = scp->ypos;
-	    ptr->mv_csz = scp->xsize;
-	    ptr->mv_rsz = scp->ysize;
-	    ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
-	    /*
-	     * The following fields are filled by the terminal emulator. XXX
-	     *
-	     * ptr->mv_norm.fore
-	     * ptr->mv_norm.back
-	     * ptr->mv_rev.fore
-	     * ptr->mv_rev.back
-	     */
-	    ptr->mv_grfc.fore = 0;      /* not supported */
-	    ptr->mv_grfc.back = 0;      /* not supported */
-	    ptr->mv_ovscan = scp->border;
-	    if (scp == sc->cur_scp)
-		save_kbd_state(scp);
-	    ptr->mk_keylock = scp->status & LOCK_MASK;
-	    return 0;
-	}
-	return EINVAL;
-    }
-
-    case CONS_GETVERS:  	/* get version number */
-	*(int*)data = 0x200;    /* version 2.0 */
-	return 0;
-
-    case CONS_IDLE:		/* see if the screen has been idle */
-	/*
-	 * When the screen is in the GRAPHICS_MODE or UNKNOWN_MODE,
-	 * the user process may have been writing something on the
-	 * screen and syscons is not aware of it. Declare the screen
-	 * is NOT idle if it is in one of these modes. But there is
-	 * an exception to it; if a screen saver is running in the 
-	 * graphics mode in the current screen, we should say that the
-	 * screen has been idle.
-	 */
-	*(int *)data = (sc->flags & SC_SCRN_IDLE)
-		       && (!ISGRAPHSC(sc->cur_scp)
-			   || (sc->cur_scp->status & SAVER_RUNNING));
-	return 0;
-
-    case CONS_SAVERMODE:	/* set saver mode */
-	switch(*(int *)data) {
-	case CONS_NO_SAVER:
-	case CONS_USR_SAVER:
-	    /* if a LKM screen saver is running, stop it first. */
-	    scsplash_stick(FALSE);
-	    saver_mode = *(int *)data;
-	    s = spltty();
-#ifdef DEV_SPLASH
-	    if ((error = wait_scrn_saver_stop(NULL))) {
-		splx(s);
-		return error;
-	    }
-#endif
-	    run_scrn_saver = TRUE;
-	    if (saver_mode == CONS_USR_SAVER)
-		scp->status |= SAVER_RUNNING;
-	    else
-		scp->status &= ~SAVER_RUNNING;
-	    scsplash_stick(TRUE);
-	    splx(s);
-	    break;
-	case CONS_LKM_SAVER:
-	    s = spltty();
-	    if ((saver_mode == CONS_USR_SAVER) && (scp->status & SAVER_RUNNING))
-		scp->status &= ~SAVER_RUNNING;
-	    saver_mode = *(int *)data;
-	    splx(s);
-	    break;
-	default:
-	    return EINVAL;
-	}
-	return 0;
-
-    case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
-	/*
-	 * Note that this ioctl does not guarantee the screen saver 
-	 * actually starts or stops. It merely attempts to do so...
-	 */
-	s = spltty();
-	run_scrn_saver = (*(int *)data != 0);
-	if (run_scrn_saver)
-	    sc->scrn_time_stamp -= scrn_blank_time;
-	splx(s);
-	return 0;
-
-    case CONS_SCRSHOT:		/* get a screen shot */
-    {
-	int retval, hist_rsz;
-	size_t lsize, csize;
-	vm_offset_t frbp, hstp;
-	unsigned lnum;
-	scrshot_t *ptr = (scrshot_t *)data;
-	void *outp = ptr->buf;
-
-	s = spltty();
-	if (ISGRAPHSC(scp)) {
-	    splx(s);
-	    return EOPNOTSUPP;
-	}
-	hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
-	if ((ptr->x + ptr->xsize) > scp->xsize ||
-	    (ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
-	    splx(s);
-	    return EINVAL;
-	}
-
-	lsize = scp->xsize * sizeof(u_int16_t);
-	csize = ptr->xsize * sizeof(u_int16_t);
-	/* Pointer to the last line of framebuffer */
-	frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
-	       sizeof(u_int16_t);
-	/* Pointer to the last line of target buffer */
-	(vm_offset_t)outp += ptr->ysize * csize;
-	/* Pointer to the last line of history buffer */
-	if (scp->history != NULL)
-	    hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
-		sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
-	else
-	    hstp = 0;
-
-	retval = 0;
-	for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
-	    if (lnum < scp->ysize) {
-		frbp -= lsize;
-	    } else {
-		hstp -= lsize;
-		if (hstp < scp->history->vtb_buffer)
-		    hstp += scp->history->vtb_rows * lsize;
-		frbp = hstp;
-	    }
-	    if (lnum < ptr->y)
-		continue;
-	    (vm_offset_t)outp -= csize;
-	    retval = copyout((void *)frbp, outp, csize);
-	    if (retval != 0)
-		break;
-	}
-	splx(s);
-	return retval;
-    }
-
-    case VT_SETMODE:    	/* set screen switcher mode */
-    {
-	struct vt_mode *mode;
-	struct proc *p1;
-
-	mode = (struct vt_mode *)data;
-	DPRINTF(5, ("sc%d: VT_SETMODE ", sc->unit));
-	if (scp->smode.mode == VT_PROCESS) {
-	    p1 = pfind(scp->pid);
-    	    if (scp->proc == p1 && scp->proc != td->td_proc) {
-		if (p1)
-		    PROC_UNLOCK(p1);
-		DPRINTF(5, ("error EPERM\n"));
-		return EPERM;
-	    }
-	    if (p1)
-		PROC_UNLOCK(p1);
-	}
-	s = spltty();
-	if (mode->mode == VT_AUTO) {
-	    scp->smode.mode = VT_AUTO;
-	    scp->proc = NULL;
-	    scp->pid = 0;
-	    DPRINTF(5, ("VT_AUTO, "));
-	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
-		cons_unavail = FALSE;
-	    /* were we in the middle of the vty switching process? */
-	    if (finish_vt_rel(scp, TRUE, &s) == 0)
-		DPRINTF(5, ("reset WAIT_REL, "));
-	    if (finish_vt_acq(scp) == 0)
-		DPRINTF(5, ("reset WAIT_ACQ, "));
-	} else {
-	    if (!ISSIGVALID(mode->relsig) || !ISSIGVALID(mode->acqsig)
-		|| !ISSIGVALID(mode->frsig)) {
-		splx(s);
-		DPRINTF(5, ("error EINVAL\n"));
-		return EINVAL;
-	    }
-	    DPRINTF(5, ("VT_PROCESS %d, ", td->td_proc->p_pid));
-	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
-	    scp->proc = td->td_proc;
-	    scp->pid = scp->proc->p_pid;
-	    if ((scp == sc->cur_scp) && (sc->unit == sc_console_unit))
-		cons_unavail = TRUE;
-	}
-	splx(s);
-	DPRINTF(5, ("\n"));
-	return 0;
-    }
-
-    case VT_GETMODE:    	/* get screen switcher mode */
-	bcopy(&scp->smode, data, sizeof(struct vt_mode));
-	return 0;
-
-    case VT_RELDISP:    	/* screen switcher ioctl */
-	s = spltty();
-	/*
-	 * This must be the current vty which is in the VT_PROCESS
-	 * switching mode...
-	 */
-	if ((scp != sc->cur_scp) || (scp->smode.mode != VT_PROCESS)) {
-	    splx(s);
-	    return EINVAL;
-	}
-	/* ...and this process is controlling it. */
-	if (scp->proc != td->td_proc) {
-	    splx(s);
-	    return EPERM;
-	}
-	error = EINVAL;
-	switch(*(int *)data) {
-	case VT_FALSE:  	/* user refuses to release screen, abort */
-	    if ((error = finish_vt_rel(scp, FALSE, &s)) == 0)
-		DPRINTF(5, ("sc%d: VT_FALSE\n", sc->unit));
-	    break;
-	case VT_TRUE:   	/* user has released screen, go on */
-	    if ((error = finish_vt_rel(scp, TRUE, &s)) == 0)
-		DPRINTF(5, ("sc%d: VT_TRUE\n", sc->unit));
-	    break;
-	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
-	    if ((error = finish_vt_acq(scp)) == 0)
-		DPRINTF(5, ("sc%d: VT_ACKACQ\n", sc->unit));
-	    break;
-	default:
-	    break;
-	}
-	splx(s);
-	return error;
-
-    case VT_OPENQRY:    	/* return free virtual console */
-	for (i = sc->first_vty; i < sc->first_vty + sc->vtys; i++) {
-	    tp = VIRTUAL_TTY(sc, i);
-	    if (!ISTTYOPEN(tp)) {
-		*(int *)data = i + 1;
-		return 0;
-	    }
-	}
-	return EINVAL;
-
-    case VT_ACTIVATE:   	/* switch to screen *data */
-	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
-	s = spltty();
-	sc_clean_up(sc->cur_scp);
-	splx(s);
-	return sc_switch_scr(sc, i);
-
-    case VT_WAITACTIVE: 	/* wait for switch to occur */
-	i = (*(int *)data == 0) ? scp->index : (*(int *)data - 1);
-	if ((i < sc->first_vty) || (i >= sc->first_vty + sc->vtys))
-	    return EINVAL;
-	s = spltty();
-	error = sc_clean_up(sc->cur_scp);
-	splx(s);
-	if (error)
-	    return error;
-	scp = SC_STAT(SC_DEV(sc, i));
-	if (scp == scp->sc->cur_scp)
-	    return 0;
-	while ((error=tsleep(&scp->smode, PZERO|PCATCH,
-			     "waitvt", 0)) == ERESTART) ;
-	return error;
-
-    case VT_GETACTIVE:		/* get active vty # */
-	*(int *)data = sc->cur_scp->index + 1;
-	return 0;
-
-    case VT_GETINDEX:		/* get this vty # */
-	*(int *)data = scp->index + 1;
-	return 0;
-
-    case VT_LOCKSWITCH:		/* prevent vty switching */
-	if ((*(int *)data) & 0x01)
-	    sc->flags |= SC_SCRN_VTYLOCK;
-	else
-	    sc->flags &= ~SC_SCRN_VTYLOCK;
-	return 0;
-
-    case KDENABIO:      	/* allow io operations */
-	error = suser(td);
-	if (error != 0)
-	    return error;
-	error = securelevel_gt(td->td_ucred, 0);
-	if (error != 0)
-	    return error;
-#ifdef __i386__
-	td->td_frame->tf_eflags |= PSL_IOPL;
-#endif
-	return 0;
-
-    case KDDISABIO:     	/* disallow io operations (default) */
-#ifdef __i386__
-	td->td_frame->tf_eflags &= ~PSL_IOPL;
-#endif
-	return 0;
-
-    case KDSKBSTATE:    	/* set keyboard state (locks) */
-	if (*(int *)data & ~LOCK_MASK)
-	    return EINVAL;
-	scp->status &= ~LOCK_MASK;
-	scp->status |= *(int *)data;
-	if (scp == sc->cur_scp)
-	    update_kbd_state(scp, scp->status, LOCK_MASK);
-	return 0;
-
-    case KDGKBSTATE:    	/* get keyboard state (locks) */
-	if (scp == sc->cur_scp)
-	    save_kbd_state(scp);
-	*(int *)data = scp->status & LOCK_MASK;
-	return 0;
-
-    case KDGETREPEAT:      	/* get keyboard repeat & delay rates */
-    case KDSETREPEAT:      	/* set keyboard repeat & delay rates (new) */
-	error = kbd_ioctl(sc->kbd, cmd, data);
-	if (error == ENOIOCTL)
-	    error = ENODEV;
-	return error;
-
-    case KDSETRAD:      	/* set keyboard repeat & delay rates (old) */
-	if (*(int *)data & ~0x7f)
-	    return EINVAL;
-	error = kbd_ioctl(sc->kbd, cmd, data);
-	if (error == ENOIOCTL)
-	    error = ENODEV;
-	return error;
-
-    case KDSKBMODE:     	/* set keyboard mode */
-	switch (*(int *)data) {
-	case K_XLATE:   	/* switch to XLT ascii mode */
-	case K_RAW: 		/* switch to RAW scancode mode */
-	case K_CODE: 		/* switch to CODE mode */
-	    scp->kbd_mode = *(int *)data;
-	    if (scp == sc->cur_scp)
-		kbd_ioctl(sc->kbd, cmd, data);
-	    return 0;
-	default:
-	    return EINVAL;
-	}
-	/* NOT REACHED */
-
-    case KDGKBMODE:     	/* get keyboard mode */
-	*(int *)data = scp->kbd_mode;
-	return 0;
-
-    case KDGKBINFO:
-	error = kbd_ioctl(sc->kbd, cmd, data);
-	if (error == ENOIOCTL)
-	    error = ENODEV;
-	return error;
-
-    case KDMKTONE:      	/* sound the bell */
-	if (*(int*)data)
-	    sc_bell(scp, (*(int*)data)&0xffff,
-		    (((*(int*)data)>>16)&0xffff)*hz/1000);
-	else
-	    sc_bell(scp, scp->bell_pitch, scp->bell_duration);
-	return 0;
-
-    case KIOCSOUND:     	/* make tone (*data) hz */
-	if (scp == sc->cur_scp) {
-	    if (*(int *)data)
-		return sc_tone(*(int *)data);
-	    else
-		return sc_tone(0);
-	}
-	return 0;
-
-    case KDGKBTYPE:     	/* get keyboard type */
-	error = kbd_ioctl(sc->kbd, cmd, data);
-	if (error == ENOIOCTL) {
-	    /* always return something? XXX */
-	    *(int *)data = 0;
-	}
-	return 0;
-
-    case KDSETLED:      	/* set keyboard LED status */
-	if (*(int *)data & ~LED_MASK)	/* FIXME: LOCK_MASK? */
-	    return EINVAL;
-	scp->status &= ~LED_MASK;
-	scp->status |= *(int *)data;
-	if (scp == sc->cur_scp)
-	    update_kbd_leds(scp, scp->status);
-	return 0;
-
-    case KDGETLED:      	/* get keyboard LED status */
-	if (scp == sc->cur_scp)
-	    save_kbd_state(scp);
-	*(int *)data = scp->status & LED_MASK;
-	return 0;
-
-    case CONS_SETKBD: 		/* set the new keyboard */
-	{
-	    keyboard_t *newkbd;
-
-	    s = spltty();
-	    newkbd = kbd_get_keyboard(*(int *)data);
-	    if (newkbd == NULL) {
-		splx(s);
-		return EINVAL;
-	    }
-	    error = 0;
-	    if (sc->kbd != newkbd) {
-		i = kbd_allocate(newkbd->kb_name, newkbd->kb_unit,
-				 (void *)&sc->keyboard, sckbdevent, sc);
-		/* i == newkbd->kb_index */
-		if (i >= 0) {
-		    if (sc->kbd != NULL) {
-			save_kbd_state(sc->cur_scp);
-			kbd_release(sc->kbd, (void *)&sc->keyboard);
-		    }
-		    sc->kbd = kbd_get_keyboard(i); /* sc->kbd == newkbd */
-		    sc->keyboard = i;
-		    kbd_ioctl(sc->kbd, KDSKBMODE,
-			      (caddr_t)&sc->cur_scp->kbd_mode);
-		    update_kbd_state(sc->cur_scp, sc->cur_scp->status,
-				     LOCK_MASK);
-		} else {
-		    error = EPERM;	/* XXX */
-		}
-	    }
-	    splx(s);
-	    return error;
-	}
-
-    case CONS_RELKBD: 		/* release the current keyboard */
-	s = spltty();
-	error = 0;
-	if (sc->kbd != NULL) {
-	    save_kbd_state(sc->cur_scp);
-	    error = kbd_release(sc->kbd, (void *)&sc->keyboard);
-	    if (error == 0) {
-		sc->kbd = NULL;
-		sc->keyboard = -1;
-	    }
-	}
-	splx(s);
-	return error;
-
-    case CONS_GETTERM:		/* get the current terminal emulator info */
-	{
-	    sc_term_sw_t *sw;
-
-	    if (((term_info_t *)data)->ti_index == 0) {
-		sw = scp->tsw;
-	    } else {
-		sw = sc_term_match_by_number(((term_info_t *)data)->ti_index);
-	    }
-	    if (sw != NULL) {
-		strncpy(((term_info_t *)data)->ti_name, sw->te_name, 
-			sizeof(((term_info_t *)data)->ti_name));
-		strncpy(((term_info_t *)data)->ti_desc, sw->te_desc, 
-			sizeof(((term_info_t *)data)->ti_desc));
-		((term_info_t *)data)->ti_flags = 0;
-		return 0;
-	    } else {
-		((term_info_t *)data)->ti_name[0] = '\0';
-		((term_info_t *)data)->ti_desc[0] = '\0';
-		((term_info_t *)data)->ti_flags = 0;
-		return EINVAL;
-	    }
-	}
-
-    case CONS_SETTERM:		/* set the current terminal emulator */
-	s = spltty();
-	error = sc_init_emulator(scp, ((term_info_t *)data)->ti_name);
-	/* FIXME: what if scp == sc_console! XXX */
-	splx(s);
-	return error;
-
-    case GIO_SCRNMAP:   	/* get output translation table */
-	bcopy(&sc->scr_map, data, sizeof(sc->scr_map));
-	return 0;
-
-    case PIO_SCRNMAP:   	/* set output translation table */
-	bcopy(data, &sc->scr_map, sizeof(sc->scr_map));
-	for (i=0; i<sizeof(sc->scr_map); i++) {
-	    sc->scr_rmap[sc->scr_map[i]] = i;
-	}
-	return 0;
-
-    case GIO_KEYMAP:		/* get keyboard translation table */
-    case PIO_KEYMAP:		/* set keyboard translation table */
-    case GIO_DEADKEYMAP:	/* get accent key translation table */
-    case PIO_DEADKEYMAP:	/* set accent key translation table */
-    case GETFKEY:		/* get function key string */
-    case SETFKEY:		/* set function key string */
-	error = kbd_ioctl(sc->kbd, cmd, data);
-	if (error == ENOIOCTL)
-	    error = ENODEV;
-	return error;
-
-#ifndef SC_NO_FONT_LOADING
-
-    case PIO_FONT8x8:   	/* set 8x8 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	bcopy(data, sc->font_8, 8*256);
-	sc->fonts_loaded |= FONT_8;
-	/*
-	 * FONT KLUDGE
-	 * Always use the font page #0. XXX
-	 * Don't load if the current font size is not 8x8.
-	 */
-	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size < 14))
-	    sc_load_font(sc->cur_scp, 0, 8, sc->font_8, 0, 256);
-	return 0;
-
-    case GIO_FONT8x8:   	/* get 8x8 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	if (sc->fonts_loaded & FONT_8) {
-	    bcopy(sc->font_8, data, 8*256);
-	    return 0;
-	}
-	else
-	    return ENXIO;
-
-    case PIO_FONT8x14:  	/* set 8x14 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	bcopy(data, sc->font_14, 14*256);
-	sc->fonts_loaded |= FONT_14;
-	/*
-	 * FONT KLUDGE
-	 * Always use the font page #0. XXX
-	 * Don't load if the current font size is not 8x14.
-	 */
-	if (ISTEXTSC(sc->cur_scp)
-	    && (sc->cur_scp->font_size >= 14)
-	    && (sc->cur_scp->font_size < 16))
-	    sc_load_font(sc->cur_scp, 0, 14, sc->font_14, 0, 256);
-	return 0;
-
-    case GIO_FONT8x14:  	/* get 8x14 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	if (sc->fonts_loaded & FONT_14) {
-	    bcopy(sc->font_14, data, 14*256);
-	    return 0;
-	}
-	else
-	    return ENXIO;
-
-    case PIO_FONT8x16:  	/* set 8x16 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	bcopy(data, sc->font_16, 16*256);
-	sc->fonts_loaded |= FONT_16;
-	/*
-	 * FONT KLUDGE
-	 * Always use the font page #0. XXX
-	 * Don't load if the current font size is not 8x16.
-	 */
-	if (ISTEXTSC(sc->cur_scp) && (sc->cur_scp->font_size >= 16))
-	    sc_load_font(sc->cur_scp, 0, 16, sc->font_16, 0, 256);
-	return 0;
-
-    case GIO_FONT8x16:  	/* get 8x16 dot font */
-	if (!ISFONTAVAIL(sc->adp->va_flags))
-	    return ENXIO;
-	if (sc->fonts_loaded & FONT_16) {
-	    bcopy(sc->font_16, data, 16*256);
-	    return 0;
-	}
-	else
-	    return ENXIO;
-
-#endif /* SC_NO_FONT_LOADING */
-
-#ifdef PC98
-    case ADJUST_CLOCK: /* /dev/rtc for 98note resume */
-	inittodr(0);
-	return 0;
-#endif
-
-    default:
-	break;
-    }
-
-    error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
-    if (error != ENOIOCTL)
-	return(error);
-    error = ttioctl(tp, cmd, data, flag);
-    if (error != ENOIOCTL)
-	return(error);
-    return(ENOTTY);
-}
-
-static void
-scstart(struct tty *tp)
-{
-    struct clist *rbp;
-    int s, len;
-    u_char buf[PCBURST];
-    scr_stat *scp = SC_STAT(tp->t_dev);
-
-    if (scp->status & SLKED || scp->sc->blink_in_progress)
-	return;
-    s = spltty();
-    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
-	tp->t_state |= TS_BUSY;
-	rbp = &tp->t_outq;
-	while (rbp->c_cc) {
-	    len = q_to_b(rbp, buf, PCBURST);
-	    splx(s);
-	    sc_puts(scp, buf, len);
-	    s = spltty();
-	}
-	tp->t_state &= ~TS_BUSY;
-	ttwwakeup(tp);
-    }
-    splx(s);
-}
-
-static void
-sccnprobe(struct consdev *cp)
-{
-#if __i386__
-    int unit;
-    int flags;
-
-    cp->cn_pri = sc_get_cons_priority(&unit, &flags);
-
-    /* a video card is always required */
-    if (!scvidprobe(unit, flags, TRUE))
-	cp->cn_pri = CN_DEAD;
-
-    /* syscons will become console even when there is no keyboard */
-    sckbdprobe(unit, flags, TRUE);
-
-    if (cp->cn_pri == CN_DEAD)
-	return;
-
-    /* initialize required fields */
-    cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLECTL);
-#endif /* __i386__ */
-
-#if __alpha__
-    /*
-     * alpha use sccnattach() rather than cnprobe()/cninit()/cnterm()
-     * interface to install the console.  Always return CN_DEAD from
-     * here.
-     */
-    cp->cn_pri = CN_DEAD;
-#endif /* __alpha__ */
-}
-
-static void
-sccninit(struct consdev *cp)
-{
-#if __i386__
-    int unit;
-    int flags;
-
-    sc_get_cons_priority(&unit, &flags);
-    scinit(unit, flags | SC_KERNEL_CONSOLE);
-    sc_console_unit = unit;
-    sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
-#endif /* __i386__ */
-
-#if __alpha__
-    /* SHOULDN'T REACH HERE */
-#endif /* __alpha__ */
-}
-
-static void
-sccnterm(struct consdev *cp)
-{
-    /* we are not the kernel console any more, release everything */
-
-    if (sc_console_unit < 0)
-	return;			/* shouldn't happen */
-
-#if __i386__
-    scterm(sc_console_unit, SC_KERNEL_CONSOLE);
-    sc_console_unit = -1;
-    sc_console = NULL;
-#endif /* __i386__ */
-
-#if __alpha__
-    /* do nothing XXX */
-#endif /* __alpha__ */
-}
-
-#ifdef __alpha__
-
-void
-sccnattach(void)
-{
-    static struct consdev consdev;
-    int unit;
-    int flags;
-
-    bcopy(&sc_consdev, &consdev, sizeof(sc_consdev));
-    consdev.cn_pri = sc_get_cons_priority(&unit, &flags);
-
-    /* a video card is always required */
-    if (!scvidprobe(unit, flags, TRUE))
-	consdev.cn_pri = CN_DEAD;
-
-    /* alpha doesn't allow the console being without a keyboard... Why? */
-    if (!sckbdprobe(unit, flags, TRUE))
-	consdev.cn_pri = CN_DEAD;
-
-    if (consdev.cn_pri == CN_DEAD)
-	return;
-
-    scinit(unit, flags | SC_KERNEL_CONSOLE);
-    sc_console_unit = unit;
-    sc_console = SC_STAT(sc_get_softc(unit, SC_KERNEL_CONSOLE)->dev[0]);
-    consdev.cn_dev = makedev(CDEV_MAJOR, 0);
-    cnadd(&consdev);
-}
-
-#endif /* __alpha__ */
-
-static void
-sccnputc(struct consdev *cd, int c)
-{
-    u_char buf[1];
-    scr_stat *scp = sc_console;
-    void *save;
-#ifndef SC_NO_HISTORY
-    struct tty *tp;
-#endif /* !SC_NO_HISTORY */
-    int s;
-
-    /* assert(sc_console != NULL) */
-
-#ifndef SC_NO_HISTORY
-    if (scp == scp->sc->cur_scp && scp->status & SLKED) {
-	scp->status &= ~SLKED;
-	update_kbd_state(scp, scp->status, SLKED);
-	if (scp->status & BUFFER_SAVED) {
-	    if (!sc_hist_restore(scp))
-		sc_remove_cutmarking(scp);
-	    scp->status &= ~BUFFER_SAVED;
-	    scp->status |= CURSOR_ENABLED;
-	    sc_draw_cursor_image(scp);
-	}
-	tp = VIRTUAL_TTY(scp->sc, scp->index);
-	if (ISTTYOPEN(tp))
-	    scstart(tp);
-    }
-#endif /* !SC_NO_HISTORY */
-
-    save = scp->ts;
-    if (kernel_console_ts != NULL)
-	scp->ts = kernel_console_ts;
-    buf[0] = c;
-    sc_puts(scp, buf, 1);
-    scp->ts = save;
-
-    s = spltty();	/* block sckbdevent and scrn_timer */
-    sccnupdate(scp);
-    splx(s);
-}
-
-static int
-sccngetc(struct consdev *cd)
-{
-    return sccngetch(0);
-}
-
-static int
-sccncheckc(struct consdev *cd)
-{
-    return sccngetch(SCGETC_NONBLOCK);
-}
-
-static void
-sccndbctl(struct consdev *cd, int on)
-{
-    /* try to switch to the kernel console screen */
-    if (on && debugger == 0) {
-	/*
-	 * TRY to make sure the screen saver is stopped, 
-	 * and the screen is updated before switching to 
-	 * the vty0.
-	 */
-	scrn_timer(NULL);
-	if (!cold
-	    && sc_console->sc->cur_scp->smode.mode == VT_AUTO
-	    && sc_console->smode.mode == VT_AUTO) {
-	    sc_console->sc->cur_scp->status |= MOUSE_HIDDEN;
-	    ++debugger;		/* XXX */
-#ifdef DDB
-	    /* unlock vty switching */
-	    sc_console->sc->flags &= ~SC_SCRN_VTYLOCK;
-#endif
-	    sc_switch_scr(sc_console->sc, sc_console->index);
-	    --debugger;		/* XXX */
-	}
-    }
-    if (on)
-	++debugger;
-    else
-	--debugger;
-}
-
-static int
-sccngetch(int flags)
-{
-    static struct fkeytab fkey;
-    static int fkeycp;
-    scr_stat *scp;
-    u_char *p;
-    int cur_mode;
-    int s = spltty();	/* block sckbdevent and scrn_timer while we poll */
-    int c;
-
-    /* assert(sc_console != NULL) */
-
-    /* 
-     * Stop the screen saver and update the screen if necessary.
-     * What if we have been running in the screen saver code... XXX
-     */
-    sc_touch_scrn_saver();
-    scp = sc_console->sc->cur_scp;	/* XXX */
-    sccnupdate(scp);
-
-    if (fkeycp < fkey.len) {
-	splx(s);
-	return fkey.str[fkeycp++];
-    }
-
-    if (scp->sc->kbd == NULL) {
-	splx(s);
-	return -1;
-    }
-
-    /* 
-     * Make sure the keyboard is accessible even when the kbd device
-     * driver is disabled.
-     */
-    kbd_enable(scp->sc->kbd);
-
-    /* we shall always use the keyboard in the XLATE mode here */
-    cur_mode = scp->kbd_mode;
-    scp->kbd_mode = K_XLATE;
-    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
-
-    kbd_poll(scp->sc->kbd, TRUE);
-    c = scgetc(scp->sc, SCGETC_CN | flags);
-    kbd_poll(scp->sc->kbd, FALSE);
-
-    scp->kbd_mode = cur_mode;
-    kbd_ioctl(scp->sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
-    kbd_disable(scp->sc->kbd);
-    splx(s);
-
-    switch (KEYFLAGS(c)) {
-    case 0:	/* normal char */
-	return KEYCHAR(c);
-    case FKEY:	/* function key */
-	p = kbd_get_fkeystr(scp->sc->kbd, KEYCHAR(c), (size_t *)&fkeycp);
-	fkey.len = fkeycp;
-	if ((p != NULL) && (fkey.len > 0)) {
-	    bcopy(p, fkey.str, fkey.len);
-	    fkeycp = 1;
-	    return fkey.str[0];
-	}
-	return c;	/* XXX */
-    case NOKEY:
-    case ERRKEY:
-    default:
-	return -1;
-    }
-    /* NOT REACHED */
-}
-
-static void
-sccnupdate(scr_stat *scp)
-{
-    /* this is a cut-down version of scrn_timer()... */
-
-    if (scp->sc->font_loading_in_progress || scp->sc->videoio_in_progress)
-	return;
-
-    if (debugger > 0 || panicstr || shutdown_in_progress) {
-	sc_touch_scrn_saver();
-    } else if (scp != scp->sc->cur_scp) {
-	return;
-    }
-
-    if (!run_scrn_saver)
-	scp->sc->flags &= ~SC_SCRN_IDLE;
-#ifdef DEV_SPLASH
-    if ((saver_mode != CONS_LKM_SAVER) || !(scp->sc->flags & SC_SCRN_IDLE))
-	if (scp->sc->flags & SC_SCRN_BLANKED)
-            stop_scrn_saver(scp->sc, current_saver);
-#endif
-
-    if (scp != scp->sc->cur_scp || scp->sc->blink_in_progress
-	|| scp->sc->switch_in_progress)
-	return;
-    /*
-     * FIXME: unlike scrn_timer(), we call scrn_update() from here even
-     * when write_in_progress is non-zero.  XXX
-     */
-
-    if (!ISGRAPHSC(scp) && !(scp->sc->flags & SC_SCRN_BLANKED))
-	scrn_update(scp, TRUE);
-}
-
-static void
-scrn_timer(void *arg)
-{
-#ifndef PC98
-    static int kbd_interval = 0;
-#endif
-    struct timeval tv;
-    sc_softc_t *sc;
-    scr_stat *scp;
-    int again;
-    int s;
-
-    again = (arg != NULL);
-    if (arg != NULL)
-	sc = (sc_softc_t *)arg;
-    else if (sc_console != NULL)
-	sc = sc_console->sc;
-    else
-	return;
-
-    /* don't do anything when we are performing some I/O operations */
-    if (sc->font_loading_in_progress || sc->videoio_in_progress) {
-	if (again)
-	    timeout(scrn_timer, sc, hz / 10);
-	return;
-    }
-    s = spltty();
-
-#ifndef PC98
-    if ((sc->kbd == NULL) && (sc->config & SC_AUTODETECT_KBD)) {
-	/* try to allocate a keyboard automatically */
-	if (++kbd_interval >= 25) {
-	    sc->keyboard = kbd_allocate("*", -1, (void *)&sc->keyboard,
-					sckbdevent, sc);
-	    if (sc->keyboard >= 0) {
-		sc->kbd = kbd_get_keyboard(sc->keyboard);
-		kbd_ioctl(sc->kbd, KDSKBMODE,
-			  (caddr_t)&sc->cur_scp->kbd_mode);
-		update_kbd_state(sc->cur_scp, sc->cur_scp->status,
-				 LOCK_MASK);
-	    }
-	    kbd_interval = 0;
-	}
-    }
-#endif /* PC98 */
-
-    /* find the vty to update */
-    scp = sc->cur_scp;
-
-    /* should we stop the screen saver? */
-    getmicrouptime(&tv);
-    if (debugger > 0 || panicstr || shutdown_in_progress)
-	sc_touch_scrn_saver();
-    if (run_scrn_saver) {
-	if (tv.tv_sec > sc->scrn_time_stamp + scrn_blank_time)
-	    sc->flags |= SC_SCRN_IDLE;
-	else
-	    sc->flags &= ~SC_SCRN_IDLE;
-    } else {
-	sc->scrn_time_stamp = tv.tv_sec;
-	sc->flags &= ~SC_SCRN_IDLE;
-	if (scrn_blank_time > 0)
-	    run_scrn_saver = TRUE;
-    }
-#ifdef DEV_SPLASH
-    if ((saver_mode != CONS_LKM_SAVER) || !(sc->flags & SC_SCRN_IDLE))
-	if (sc->flags & SC_SCRN_BLANKED)
-            stop_scrn_saver(sc, current_saver);
-#endif
-
-    /* should we just return ? */
-    if (sc->blink_in_progress || sc->switch_in_progress
-	|| sc->write_in_progress) {
-	if (again)
-	    timeout(scrn_timer, sc, hz / 10);
-	splx(s);
-	return;
-    }
-
-    /* Update the screen */
-    scp = sc->cur_scp;		/* cur_scp may have changed... */
-    if (!ISGRAPHSC(scp) && !(sc->flags & SC_SCRN_BLANKED))
-	scrn_update(scp, TRUE);
-
-#ifdef DEV_SPLASH
-    /* should we activate the screen saver? */
-    if ((saver_mode == CONS_LKM_SAVER) && (sc->flags & SC_SCRN_IDLE))
-	if (!ISGRAPHSC(scp) || (sc->flags & SC_SCRN_BLANKED))
-	    (*current_saver)(sc, TRUE);
-#endif
-
-    if (again)
-	timeout(scrn_timer, sc, hz / 25);
-    splx(s);
-}
-
-static int
-and_region(int *s1, int *e1, int s2, int e2)
-{
-    if (*e1 < s2 || e2 < *s1)
-	return FALSE;
-    *s1 = imax(*s1, s2);
-    *e1 = imin(*e1, e2);
-    return TRUE;
-}
-
-static void 
-scrn_update(scr_stat *scp, int show_cursor)
-{
-    int start;
-    int end;
-    int s;
-    int e;
-
-    /* assert(scp == scp->sc->cur_scp) */
-
-    ++scp->sc->videoio_in_progress;
-
-#ifndef SC_NO_CUTPASTE
-    /* remove the previous mouse pointer image if necessary */
-    if (scp->status & MOUSE_VISIBLE) {
-	s = scp->mouse_pos;
-	e = scp->mouse_pos + scp->xsize + 1;
-	if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN))
-	    || and_region(&s, &e, scp->start, scp->end)
-	    || ((scp->status & CURSOR_ENABLED) && 
-		(scp->cursor_pos != scp->cursor_oldpos) &&
-		(and_region(&s, &e, scp->cursor_pos, scp->cursor_pos)
-		 || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) {
-	    sc_remove_mouse_image(scp);
-	    if (scp->end >= scp->xsize*scp->ysize)
-		scp->end = scp->xsize*scp->ysize - 1;
-	}
-    }
-#endif /* !SC_NO_CUTPASTE */
-
-#if 1
-    /* debug: XXX */
-    if (scp->end >= scp->xsize*scp->ysize) {
-	printf("scrn_update(): scp->end %d > size_of_screen!!\n", scp->end);
-	scp->end = scp->xsize*scp->ysize - 1;
-    }
-    if (scp->start < 0) {
-	printf("scrn_update(): scp->start %d < 0\n", scp->start);
-	scp->start = 0;
-    }
-#endif
-
-    /* update screen image */
-    if (scp->start <= scp->end)  {
-	if (scp->mouse_cut_end >= 0) {
-	    /* there is a marked region for cut & paste */
-	    if (scp->mouse_cut_start <= scp->mouse_cut_end) {
-		start = scp->mouse_cut_start;
-		end = scp->mouse_cut_end;
-	    } else {
-		start = scp->mouse_cut_end;
-		end = scp->mouse_cut_start - 1;
-	    }
-	    s = start;
-	    e = end;
-	    /* does the cut-mark region overlap with the update region? */
-	    if (and_region(&s, &e, scp->start, scp->end)) {
-		(*scp->rndr->draw)(scp, s, e - s + 1, TRUE);
-		s = 0;
-		e = start - 1;
-		if (and_region(&s, &e, scp->start, scp->end))
-		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
-		s = end + 1;
-		e = scp->xsize*scp->ysize - 1;
-		if (and_region(&s, &e, scp->start, scp->end))
-		    (*scp->rndr->draw)(scp, s, e - s + 1, FALSE);
-	    } else {
-		(*scp->rndr->draw)(scp, scp->start,
-				   scp->end - scp->start + 1, FALSE);
-	    }
-	} else {
-	    (*scp->rndr->draw)(scp, scp->start,
-			       scp->end - scp->start + 1, FALSE);
-	}
-    }
-
-    /* we are not to show the cursor and the mouse pointer... */
-    if (!show_cursor) {
-        scp->end = 0;
-        scp->start = scp->xsize*scp->ysize - 1;
-	--scp->sc->videoio_in_progress;
-	return;
-    }
-
-    /* update cursor image */
-    if (scp->status & CURSOR_ENABLED) {
-	s = scp->start;
-	e = scp->end;
-        /* did cursor move since last time ? */
-        if (scp->cursor_pos != scp->cursor_oldpos) {
-            /* do we need to remove old cursor image ? */
-            if (!and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos))
-                sc_remove_cursor_image(scp);
-            sc_draw_cursor_image(scp);
-        } else {
-            if (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos))
-		/* cursor didn't move, but has been overwritten */
-		sc_draw_cursor_image(scp);
-	    else if (scp->curs_attr.flags & CONS_BLINK_CURSOR)
-		/* if it's a blinking cursor, update it */
-		(*scp->rndr->blink_cursor)(scp, scp->cursor_pos,
-					   sc_inside_cutmark(scp,
-					       scp->cursor_pos));
-        }
-    }
-
-#ifndef SC_NO_CUTPASTE
-    /* update "pseudo" mouse pointer image */
-    if (scp->sc->flags & SC_MOUSE_ENABLED) {
-	if (!(scp->status & (MOUSE_VISIBLE | MOUSE_HIDDEN))) {
-	    scp->status &= ~MOUSE_MOVED;
-	    sc_draw_mouse_image(scp);
-	}
-    }
-#endif /* SC_NO_CUTPASTE */
-
-    scp->end = 0;
-    scp->start = scp->xsize*scp->ysize - 1;
-
-    --scp->sc->videoio_in_progress;
-}
-
-#ifdef DEV_SPLASH
-static int
-scsplash_callback(int event, void *arg)
-{
-    sc_softc_t *sc;
-    int error;
-
-    sc = (sc_softc_t *)arg;
-
-    switch (event) {
-    case SPLASH_INIT:
-	if (add_scrn_saver(scsplash_saver) == 0) {
-	    sc->flags &= ~SC_SAVER_FAILED;
-	    run_scrn_saver = TRUE;
-	    if (cold && !(boothowto & (RB_VERBOSE | RB_CONFIG))) {
-		scsplash_stick(TRUE);
-		(*current_saver)(sc, TRUE);
-	    }
-	}
-	return 0;
-
-    case SPLASH_TERM:
-	if (current_saver == scsplash_saver) {
-	    scsplash_stick(FALSE);
-	    error = remove_scrn_saver(scsplash_saver);
-	    if (error)
-		return error;
-	}
-	return 0;
-
-    default:
-	return EINVAL;
-    }
-}
-
-static void
-scsplash_saver(sc_softc_t *sc, int show)
-{
-    static int busy = FALSE;
-    scr_stat *scp;
-
-    if (busy)
-	return;
-    busy = TRUE;
-
-    scp = sc->cur_scp;
-    if (show) {
-	if (!(sc->flags & SC_SAVER_FAILED)) {
-	    if (!(sc->flags & SC_SCRN_BLANKED))
-		set_scrn_saver_mode(scp, -1, NULL, 0);
-	    switch (splash(sc->adp, TRUE)) {
-	    case 0:		/* succeeded */
-		break;
-	    case EAGAIN:	/* try later */
-		restore_scrn_saver_mode(scp, FALSE);
-		sc_touch_scrn_saver();		/* XXX */
-		break;
-	    default:
-		sc->flags |= SC_SAVER_FAILED;
-		scsplash_stick(FALSE);
-		restore_scrn_saver_mode(scp, TRUE);
-		printf("scsplash_saver(): failed to put up the image\n");
-		break;
-	    }
-	}
-    } else if (!sticky_splash) {
-	if ((sc->flags & SC_SCRN_BLANKED) && (splash(sc->adp, FALSE) == 0))
-	    restore_scrn_saver_mode(scp, TRUE);
-    }
-    busy = FALSE;
-}
-
-static int
-add_scrn_saver(void (*this_saver)(sc_softc_t *, int))
-{
-#if 0
-    int error;
-
-    if (current_saver != none_saver) {
-	error = remove_scrn_saver(current_saver);
-	if (error)
-	    return error;
-    }
-#endif
-    if (current_saver != none_saver)
-	return EBUSY;
-
-    run_scrn_saver = FALSE;
-    saver_mode = CONS_LKM_SAVER;
-    current_saver = this_saver;
-    return 0;
-}
-
-static int
-remove_scrn_saver(void (*this_saver)(sc_softc_t *, int))
-{
-    if (current_saver != this_saver)
-	return EINVAL;
-
-#if 0
-    /*
-     * In order to prevent `current_saver' from being called by
-     * the timeout routine `scrn_timer()' while we manipulate 
-     * the saver list, we shall set `current_saver' to `none_saver' 
-     * before stopping the current saver, rather than blocking by `splXX()'.
-     */
-    current_saver = none_saver;
-    if (scrn_blanked)
-        stop_scrn_saver(this_saver);
-#endif
-
-    /* unblank all blanked screens */
-    wait_scrn_saver_stop(NULL);
-    if (scrn_blanked)
-	return EBUSY;
-
-    current_saver = none_saver;
-    return 0;
-}
-
-static int
-set_scrn_saver_mode(scr_stat *scp, int mode, u_char *pal, int border)
-{
-    int s;
-
-    /* assert(scp == scp->sc->cur_scp) */
-    s = spltty();
-    if (!ISGRAPHSC(scp))
-	sc_remove_cursor_image(scp);
-    scp->splash_save_mode = scp->mode;
-    scp->splash_save_status = scp->status & (GRAPHICS_MODE | PIXEL_MODE);
-    scp->status &= ~(GRAPHICS_MODE | PIXEL_MODE);
-    scp->status |= (UNKNOWN_MODE | SAVER_RUNNING);
-    scp->sc->flags |= SC_SCRN_BLANKED;
-    ++scrn_blanked;
-    splx(s);
-    if (mode < 0)
-	return 0;
-    scp->mode = mode;
-    if (set_mode(scp) == 0) {
-	if (scp->sc->adp->va_info.vi_flags & V_INFO_GRAPHICS)
-	    scp->status |= GRAPHICS_MODE;
-#ifndef SC_NO_PALETTE_LOADING
-	if (pal != NULL)
-	    load_palette(scp->sc->adp, pal);
-#endif
-	sc_set_border(scp, border);
-	return 0;
-    } else {
-	s = spltty();
-	scp->mode = scp->splash_save_mode;
-	scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
-	scp->status |= scp->splash_save_status;
-	splx(s);
-	return 1;
-    }
-}
-
-static int
-restore_scrn_saver_mode(scr_stat *scp, int changemode)
-{
-    int mode;
-    int status;
-    int s;
-
-    /* assert(scp == scp->sc->cur_scp) */
-    s = spltty();
-    mode = scp->mode;
-    status = scp->status;
-    scp->mode = scp->splash_save_mode;
-    scp->status &= ~(UNKNOWN_MODE | SAVER_RUNNING);
-    scp->status |= scp->splash_save_status;
-    scp->sc->flags &= ~SC_SCRN_BLANKED;
-    if (!changemode) {
-	if (!ISGRAPHSC(scp))
-	    sc_draw_cursor_image(scp);
-	--scrn_blanked;
-	splx(s);
-	return 0;
-    }
-    if (set_mode(scp) == 0) {
-#ifndef SC_NO_PALETTE_LOADING
-	load_palette(scp->sc->adp, scp->sc->palette);
-#endif
-	--scrn_blanked;
-	splx(s);
-	return 0;
-    } else {
-	scp->mode = mode;
-	scp->status = status;
-	splx(s);
-	return 1;
-    }
-}
-
-static void
-stop_scrn_saver(sc_softc_t *sc, void (*saver)(sc_softc_t *, int))
-{
-    (*saver)(sc, FALSE);
-    run_scrn_saver = FALSE;
-    /* the screen saver may have chosen not to stop after all... */
-    if (sc->flags & SC_SCRN_BLANKED)
-	return;
-
-    mark_all(sc->cur_scp);
-    if (sc->delayed_next_scr)
-	sc_switch_scr(sc, sc->delayed_next_scr - 1);
-    if (debugger == 0)
-	wakeup(&scrn_blanked);
-}
-
-static int
-wait_scrn_saver_stop(sc_softc_t *sc)
-{
-    int error = 0;
-
-    while (scrn_blanked > 0) {
-	run_scrn_saver = FALSE;
-	if (sc && !(sc->flags & SC_SCRN_BLANKED)) {
-	    error = 0;
-	    break;
-	}
-	error = tsleep(&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
-	if ((error != 0) && (error != ERESTART))
-	    break;
-    }
-    run_scrn_saver = FALSE;
-    return error;
-}
-#endif /* DEV_SPLASH */
-
-void
-sc_touch_scrn_saver(void)
-{
-    scsplash_stick(FALSE);
-    run_scrn_saver = FALSE;
-}
-
-int
-sc_switch_scr(sc_softc_t *sc, u_int next_scr)
-{
-    scr_stat *cur_scp;
-    struct tty *tp;
-    struct proc *p;
-    int s;
-
-    DPRINTF(5, ("sc0: sc_switch_scr() %d ", next_scr + 1));
-
-    /* prevent switch if previously requested */
-    if (sc->flags & SC_SCRN_VTYLOCK) {
-	    sc_bell(sc->cur_scp, sc->cur_scp->bell_pitch,
-		sc->cur_scp->bell_duration);
-	    return EPERM;
-    }
-
-    /* delay switch if the screen is blanked or being updated */
-    if ((sc->flags & SC_SCRN_BLANKED) || sc->write_in_progress
-	|| sc->blink_in_progress || sc->videoio_in_progress) {
-	sc->delayed_next_scr = next_scr + 1;
-	sc_touch_scrn_saver();
-	DPRINTF(5, ("switch delayed\n"));
-	return 0;
-    }
-
-    s = spltty();
-    cur_scp = sc->cur_scp;
-
-    /* we are in the middle of the vty switching process... */
-    if (sc->switch_in_progress
-	&& (cur_scp->smode.mode == VT_PROCESS)
-	&& cur_scp->proc) {
-	p = pfind(cur_scp->pid);
-	if (cur_scp->proc != p) {
-	    if (p)
-		PROC_UNLOCK(p);
-	    /* 
-	     * The controlling process has died!!.  Do some clean up.
-	     * NOTE:`cur_scp->proc' and `cur_scp->smode.mode' 
-	     * are not reset here yet; they will be cleared later.
-	     */
-	    DPRINTF(5, ("cur_scp controlling process %d died, ",
-	       cur_scp->pid));
-	    if (cur_scp->status & SWITCH_WAIT_REL) {
-		/*
-		 * Force the previous switch to finish, but return now 
-		 * with error.
-		 */
-		DPRINTF(5, ("reset WAIT_REL, "));
-		finish_vt_rel(cur_scp, TRUE, &s);
-		splx(s);
-		DPRINTF(5, ("finishing previous switch\n"));
-		return EINVAL;
-	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
-		/* let's assume screen switch has been completed. */
-		DPRINTF(5, ("reset WAIT_ACQ, "));
-		finish_vt_acq(cur_scp);
-	    } else {
-		/* 
-	 	 * We are in between screen release and acquisition, and
-		 * reached here via scgetc() or scrn_timer() which has 
-		 * interrupted exchange_scr(). Don't do anything stupid.
-		 */
-		DPRINTF(5, ("waiting nothing, "));
-	    }
-	} else {
-	    if (p)
-		PROC_UNLOCK(p);
-	    /*
-	     * The controlling process is alive, but not responding... 
-	     * It is either buggy or it may be just taking time.
-	     * The following code is a gross kludge to cope with this
-	     * problem for which there is no clean solution. XXX
-	     */
-	    if (cur_scp->status & SWITCH_WAIT_REL) {
-		switch (sc->switch_in_progress++) {
-		case 1:
-		    break;
-		case 2:
-		    DPRINTF(5, ("sending relsig again, "));
-		    signal_vt_rel(cur_scp);
-		    break;
-		case 3:
-		    break;
-		case 4:
-		default:
-		    /*
-		     * Act as if the controlling program returned
-		     * VT_FALSE.
-		     */
-		    DPRINTF(5, ("force reset WAIT_REL, "));
-		    finish_vt_rel(cur_scp, FALSE, &s);
-		    splx(s);
-		    DPRINTF(5, ("act as if VT_FALSE was seen\n"));
-		    return EINVAL;
-		}
-	    } else if (cur_scp->status & SWITCH_WAIT_ACQ) {
-		switch (sc->switch_in_progress++) {
-		case 1:
-		    break;
-		case 2:
-		    DPRINTF(5, ("sending acqsig again, "));
-		    signal_vt_acq(cur_scp);
-		    break;
-		case 3:
-		    break;
-		case 4:
-		default:
-		     /* clear the flag and finish the previous switch */
-		    DPRINTF(5, ("force reset WAIT_ACQ, "));
-		    finish_vt_acq(cur_scp);
-		    break;
-		}
-	    }
-	}
-    }
-
-    /*
-     * Return error if an invalid argument is given, or vty switch
-     * is still in progress.
-     */
-    if ((next_scr < sc->first_vty) || (next_scr >= sc->first_vty + sc->vtys)
-	|| sc->switch_in_progress) {
-	splx(s);
-	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
-	DPRINTF(5, ("error 1\n"));
-	return EINVAL;
-    }
-
-    /*
-     * Don't allow switching away from the graphics mode vty
-     * if the switch mode is VT_AUTO, unless the next vty is the same 
-     * as the current or the current vty has been closed (but showing).
-     */
-    tp = VIRTUAL_TTY(sc, cur_scp->index);
-    if ((cur_scp->index != next_scr)
-	&& ISTTYOPEN(tp)
-	&& (cur_scp->smode.mode == VT_AUTO)
-	&& ISGRAPHSC(cur_scp)) {
-	splx(s);
-	sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
-	DPRINTF(5, ("error, graphics mode\n"));
-	return EINVAL;
-    }
-
-    /*
-     * Is the wanted vty open? Don't allow switching to a closed vty.
-     * If we are in DDB, don't switch to a vty in the VT_PROCESS mode.
-     * Note that we always allow the user to switch to the kernel 
-     * console even if it is closed.
-     */
-    if ((sc_console == NULL) || (next_scr != sc_console->index)) {
-	tp = VIRTUAL_TTY(sc, next_scr);
-	if (!ISTTYOPEN(tp)) {
-	    splx(s);
-	    sc_bell(cur_scp, bios_value.bell_pitch, BELL_DURATION);
-	    DPRINTF(5, ("error 2, requested vty isn't open!\n"));
-	    return EINVAL;
-	}
-	if ((debugger > 0) && (SC_STAT(tp->t_dev)->smode.mode == VT_PROCESS)) {
-	    splx(s);
-	    DPRINTF(5, ("error 3, requested vty is in the VT_PROCESS mode\n"));
-	    return EINVAL;
-	}
-    }
-
-    /* this is the start of vty switching process... */
-    ++sc->switch_in_progress;
-    sc->delayed_next_scr = 0;
-    sc->old_scp = cur_scp;
-    sc->new_scp = SC_STAT(SC_DEV(sc, next_scr));
-    if (sc->new_scp == sc->old_scp) {
-	sc->switch_in_progress = 0;
-	/*
-	 * XXX wakeup() calls mtx_lock(&sched_lock) which will hang if
-	 * sched_lock is in an in-between state, e.g., when we stop at
-	 * a breakpoint at fork_exit.  It has always been wrong to call
-	 * wakeup() when the debugger is active.  In RELENG_4, wakeup()
-	 * is supposed to be locked by splhigh(), but the debugger may
-	 * be invoked at splhigh().
-	 */
-	if (debugger == 0)
-	    wakeup(&sc->new_scp->smode);
-	splx(s);
-	DPRINTF(5, ("switch done (new == old)\n"));
-	return 0;
-    }
-
-    /* has controlling process died? */
-    vt_proc_alive(sc->old_scp);
-    vt_proc_alive(sc->new_scp);
-
-    /* wait for the controlling process to release the screen, if necessary */
-    if (signal_vt_rel(sc->old_scp)) {
-	splx(s);
-	return 0;
-    }
-
-    /* go set up the new vty screen */
-    splx(s);
-    exchange_scr(sc);
-    s = spltty();
-
-    /* wake up processes waiting for this vty */
-    if (debugger == 0)
-	wakeup(&sc->cur_scp->smode);
-
-    /* wait for the controlling process to acknowledge, if necessary */
-    if (signal_vt_acq(sc->cur_scp)) {
-	splx(s);
-	return 0;
-    }
-
-    sc->switch_in_progress = 0;
-    if (sc->unit == sc_console_unit)
-	cons_unavail = FALSE;
-    splx(s);
-    DPRINTF(5, ("switch done\n"));
-
-    return 0;
-}
-
-static int
-do_switch_scr(sc_softc_t *sc, int s)
-{
-    vt_proc_alive(sc->new_scp);
-
-    splx(s);
-    exchange_scr(sc);
-    s = spltty();
-    /* sc->cur_scp == sc->new_scp */
-    wakeup(&sc->cur_scp->smode);
-
-    /* wait for the controlling process to acknowledge, if necessary */
-    if (!signal_vt_acq(sc->cur_scp)) {
-	sc->switch_in_progress = 0;
-	if (sc->unit == sc_console_unit)
-	    cons_unavail = FALSE;
-    }
-
-    return s;
-}
-
-static int
-vt_proc_alive(scr_stat *scp)
-{
-    struct proc *p;
-
-    if (scp->proc) {
-	if ((p = pfind(scp->pid)) != NULL)
-	    PROC_UNLOCK(p);
-	if (scp->proc == p)
-	    return TRUE;
-	scp->proc = NULL;
-	scp->smode.mode = VT_AUTO;
-	DPRINTF(5, ("vt controlling process %d died\n", scp->pid));
-    }
-    return FALSE;
-}
-
-static int
-signal_vt_rel(scr_stat *scp)
-{
-    if (scp->smode.mode != VT_PROCESS)
-	return FALSE;
-    scp->status |= SWITCH_WAIT_REL;
-    PROC_LOCK(scp->proc);
-    psignal(scp->proc, scp->smode.relsig);
-    PROC_UNLOCK(scp->proc);
-    DPRINTF(5, ("sending relsig to %d\n", scp->pid));
-    return TRUE;
-}
-
-static int
-signal_vt_acq(scr_stat *scp)
-{
-    if (scp->smode.mode != VT_PROCESS)
-	return FALSE;
-    if (scp->sc->unit == sc_console_unit)
-	cons_unavail = TRUE;
-    scp->status |= SWITCH_WAIT_ACQ;
-    PROC_LOCK(scp->proc);
-    psignal(scp->proc, scp->smode.acqsig);
-    PROC_UNLOCK(scp->proc);
-    DPRINTF(5, ("sending acqsig to %d\n", scp->pid));
-    return TRUE;
-}
-
-static int
-finish_vt_rel(scr_stat *scp, int release, int *s)
-{
-    if (scp == scp->sc->old_scp && scp->status & SWITCH_WAIT_REL) {
-	scp->status &= ~SWITCH_WAIT_REL;
-	if (release)
-	    *s = do_switch_scr(scp->sc, *s);
-	else
-	    scp->sc->switch_in_progress = 0;
-	return 0;
-    }
-    return EINVAL;
-}
-
-static int
-finish_vt_acq(scr_stat *scp)
-{
-    if (scp == scp->sc->new_scp && scp->status & SWITCH_WAIT_ACQ) {
-	scp->status &= ~SWITCH_WAIT_ACQ;
-	scp->sc->switch_in_progress = 0;
-	return 0;
-    }
-    return EINVAL;
-}
-
-static void
-exchange_scr(sc_softc_t *sc)
-{
-    scr_stat *scp;
-
-    /* save the current state of video and keyboard */
-    sc_move_cursor(sc->old_scp, sc->old_scp->xpos, sc->old_scp->ypos);
-    if (!ISGRAPHSC(sc->old_scp))
-	sc_remove_cursor_image(sc->old_scp);
-    if (sc->old_scp->kbd_mode == K_XLATE)
-	save_kbd_state(sc->old_scp);
-
-    /* set up the video for the new screen */
-    scp = sc->cur_scp = sc->new_scp;
-#ifdef PC98
-    if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp) || ISUNKNOWNSC(sc->new_scp))
-#else
-    if (sc->old_scp->mode != scp->mode || ISUNKNOWNSC(sc->old_scp))
-#endif
-	set_mode(scp);
-    else
-	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
-		    (void *)sc->adp->va_window, FALSE);
-    scp->status |= MOUSE_HIDDEN;
-    sc_move_cursor(scp, scp->xpos, scp->ypos);
-    if (!ISGRAPHSC(scp))
-	sc_set_cursor_image(scp);
-#ifndef SC_NO_PALETTE_LOADING
-    if (ISGRAPHSC(sc->old_scp))
-	load_palette(sc->adp, sc->palette);
-#endif
-    sc_set_border(scp, scp->border);
-
-    /* set up the keyboard for the new screen */
-    if (sc->old_scp->kbd_mode != scp->kbd_mode)
-	kbd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&scp->kbd_mode);
-    update_kbd_state(scp, scp->status, LOCK_MASK);
-
-    mark_all(scp);
-}
-
-void
-sc_puts(scr_stat *scp, u_char *buf, int len)
-{
-#ifdef DEV_SPLASH
-    /* make screensaver happy */
-    if (!sticky_splash && scp == scp->sc->cur_scp && !sc_saver_keyb_only)
-	run_scrn_saver = FALSE;
-#endif
-
-    if (scp->tsw)
-	(*scp->tsw->te_puts)(scp, buf, len);
-
-    if (scp->sc->delayed_next_scr)
-	sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
-}
-
-void
-sc_draw_cursor_image(scr_stat *scp)
-{
-    /* assert(scp == scp->sc->cur_scp); */
-    ++scp->sc->videoio_in_progress;
-    (*scp->rndr->draw_cursor)(scp, scp->cursor_pos,
-			      scp->curs_attr.flags & CONS_BLINK_CURSOR, TRUE,
-			      sc_inside_cutmark(scp, scp->cursor_pos));
-    scp->cursor_oldpos = scp->cursor_pos;
-    --scp->sc->videoio_in_progress;
-}
-
-void
-sc_remove_cursor_image(scr_stat *scp)
-{
-    /* assert(scp == scp->sc->cur_scp); */
-    ++scp->sc->videoio_in_progress;
-    (*scp->rndr->draw_cursor)(scp, scp->cursor_oldpos,
-			      scp->curs_attr.flags & CONS_BLINK_CURSOR, FALSE,
-			      sc_inside_cutmark(scp, scp->cursor_oldpos));
-    --scp->sc->videoio_in_progress;
-}
-
-static void
-update_cursor_image(scr_stat *scp)
-{
-    /* assert(scp == scp->sc->cur_scp); */
-    sc_remove_cursor_image(scp);
-    sc_set_cursor_image(scp);
-    sc_draw_cursor_image(scp);
-}
-
-void
-sc_set_cursor_image(scr_stat *scp)
-{
-    scp->curs_attr.flags = scp->curr_curs_attr.flags;
-    if (scp->curs_attr.flags & CONS_HIDDEN_CURSOR) {
-	/* hidden cursor is internally represented as zero-height underline */
-	scp->curs_attr.flags = CONS_CHAR_CURSOR;
-	scp->curs_attr.base = scp->curs_attr.height = 0;
-    } else if (scp->curs_attr.flags & CONS_CHAR_CURSOR) {
-	scp->curs_attr.base = imin(scp->curr_curs_attr.base,
-				  scp->font_size - 1);
-	scp->curs_attr.height = imin(scp->curr_curs_attr.height,
-				    scp->font_size - scp->curs_attr.base);
-    } else {	/* block cursor */
-	scp->curs_attr.base = 0;
-	scp->curs_attr.height = scp->font_size;
-    }
-
-    /* assert(scp == scp->sc->cur_scp); */
-    ++scp->sc->videoio_in_progress;
-    (*scp->rndr->set_cursor)(scp, scp->curs_attr.base, scp->curs_attr.height,
-			     scp->curs_attr.flags & CONS_BLINK_CURSOR);
-    --scp->sc->videoio_in_progress;
-}
-
-static void
-change_cursor_shape(scr_stat *scp, int flags, int base, int height)
-{
-    if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp))
-	sc_remove_cursor_image(scp);
-
-    if (base >= 0)
-	scp->curr_curs_attr.base = base;
-    if (height >= 0)
-	scp->curr_curs_attr.height = height;
-    if (flags & CONS_RESET_CURSOR)
-	scp->curr_curs_attr = scp->dflt_curs_attr;
-    else
-	scp->curr_curs_attr.flags = flags & CONS_CURSOR_ATTRS;
-
-    if ((scp == scp->sc->cur_scp) && !ISGRAPHSC(scp)) {
-	sc_set_cursor_image(scp);
-	sc_draw_cursor_image(scp);
-    }
-}
-
-void
-sc_change_cursor_shape(scr_stat *scp, int flags, int base, int height)
-{
-    sc_softc_t *sc;
-    dev_t dev;
-    int s;
-    int i;
-
-    s = spltty();
-    if ((flags != -1) && (flags & CONS_LOCAL_CURSOR)) {
-	/* local (per vty) change */
-	change_cursor_shape(scp, flags, base, height);
-	splx(s);
-	return;
-    }
-
-    /* global change */
-    sc = scp->sc;
-    if (base >= 0)
-	sc->curs_attr.base = base;
-    if (height >= 0)
-	sc->curs_attr.height = height;
-    if (flags != -1) {
-	if (flags & CONS_RESET_CURSOR)
-	    sc->curs_attr = sc->dflt_curs_attr;
-	else
-	    sc->curs_attr.flags = flags & CONS_CURSOR_ATTRS;
-    }
-
-    for (i = sc->first_vty; i < sc->first_vty + sc->vtys; ++i) {
-	if ((dev = SC_DEV(sc, i)) == NODEV)
-	    continue;
-	if ((scp = SC_STAT(dev)) == NULL)
-	    continue;
-	scp->dflt_curs_attr = sc->curs_attr;
-	change_cursor_shape(scp, CONS_RESET_CURSOR, -1, -1);
-    }
-    splx(s);
-}
-
-static void
-scinit(int unit, int flags)
-{
-    /*
-     * When syscons is being initialized as the kernel console, malloc()
-     * is not yet functional, because various kernel structures has not been
-     * fully initialized yet.  Therefore, we need to declare the following
-     * static buffers for the console.  This is less than ideal, 
-     * but is necessry evil for the time being.  XXX
-     */
-    static scr_stat main_console;
-    static dev_t main_devs[MAXCONS];
-    static struct tty main_tty;
-#ifndef PC98
-    static u_short sc_buffer[ROW*COL];	/* XXX */
-#else
-    static u_short sc_buffer[ROW*COL*2];/* XXX */
-#endif
-#ifndef SC_NO_FONT_LOADING
-    static u_char font_8[256*8];
-    static u_char font_14[256*14];
-    static u_char font_16[256*16];
-#endif
-
-    sc_softc_t *sc;
-    scr_stat *scp;
-    video_adapter_t *adp;
-    int col;
-    int row;
-    int i;
-
-    /* one time initialization */
-    if (init_done == COLD)
-	sc_get_bios_values(&bios_value);
-    init_done = WARM;
-
-    /*
-     * Allocate resources.  Even if we are being called for the second
-     * time, we must allocate them again, because they might have 
-     * disappeared...
-     */
-    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
-    adp = NULL;
-    if (sc->adapter >= 0) {
-	vid_release(sc->adp, (void *)&sc->adapter);
-	adp = sc->adp;
-	sc->adp = NULL;
-    }
-    if (sc->keyboard >= 0) {
-	DPRINTF(5, ("sc%d: releasing kbd%d\n", unit, sc->keyboard));
-	i = kbd_release(sc->kbd, (void *)&sc->keyboard);
-	DPRINTF(5, ("sc%d: kbd_release returned %d\n", unit, i));
-	if (sc->kbd != NULL) {
-	    DPRINTF(5, ("sc%d: kbd != NULL!, index:%d, unit:%d, flags:0x%x\n",
-		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
-	}
-	sc->kbd = NULL;
-    }
-    sc->adapter = vid_allocate("*", unit, (void *)&sc->adapter);
-    sc->adp = vid_get_adapter(sc->adapter);
-    /* assert((sc->adapter >= 0) && (sc->adp != NULL)) */
-    sc->keyboard = kbd_allocate("*", unit, (void *)&sc->keyboard,
-				sckbdevent, sc);
-    DPRINTF(1, ("sc%d: keyboard %d\n", unit, sc->keyboard));
-    sc->kbd = kbd_get_keyboard(sc->keyboard);
-    if (sc->kbd != NULL) {
-	DPRINTF(1, ("sc%d: kbd index:%d, unit:%d, flags:0x%x\n",
-		unit, sc->kbd->kb_index, sc->kbd->kb_unit, sc->kbd->kb_flags));
-    }
-
-    if (!(sc->flags & SC_INIT_DONE) || (adp != sc->adp)) {
-
-	sc->initial_mode = sc->adp->va_initial_mode;
-
-#ifndef SC_NO_FONT_LOADING
-	if (flags & SC_KERNEL_CONSOLE) {
-	    sc->font_8 = font_8;
-	    sc->font_14 = font_14;
-	    sc->font_16 = font_16;
-	} else if (sc->font_8 == NULL) {
-	    /* assert(sc_malloc) */
-	    sc->font_8 = malloc(sizeof(font_8), M_DEVBUF, M_WAITOK);
-	    sc->font_14 = malloc(sizeof(font_14), M_DEVBUF, M_WAITOK);
-	    sc->font_16 = malloc(sizeof(font_16), M_DEVBUF, M_WAITOK);
-	}
-#endif
-
-	/* extract the hardware cursor location and hide the cursor for now */
-	(*vidsw[sc->adapter]->read_hw_cursor)(sc->adp, &col, &row);
-	(*vidsw[sc->adapter]->set_hw_cursor)(sc->adp, -1, -1);
-
-	/* set up the first console */
-	sc->first_vty = unit*MAXCONS;
-	sc->vtys = MAXCONS;		/* XXX: should be configurable */
-	if (flags & SC_KERNEL_CONSOLE) {
-	    sc->dev = main_devs;
-	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
-	    sc->dev[0]->si_tty = &main_tty;
-	    ttyregister(&main_tty);
-	    scp = &main_console;
-	    init_scp(sc, sc->first_vty, scp);
-	    sc_vtb_init(&scp->vtb, VTB_MEMORY, scp->xsize, scp->ysize,
-			(void *)sc_buffer, FALSE);
-	    if (sc_init_emulator(scp, SC_DFLT_TERM))
-		sc_init_emulator(scp, "*");
-	    (*scp->tsw->te_default_attr)(scp,
-					 kernel_default.std_color,
-					 kernel_default.rev_color);
-	} else {
-	    /* assert(sc_malloc) */
-	    sc->dev = malloc(sizeof(dev_t)*sc->vtys, M_DEVBUF, M_WAITOK|M_ZERO);
-	    sc->dev[0] = makedev(CDEV_MAJOR, unit*MAXCONS);
-	    sc->dev[0]->si_tty = ttymalloc(sc->dev[0]->si_tty);
-	    scp = alloc_scp(sc, sc->first_vty);
-	}
-	SC_STAT(sc->dev[0]) = scp;
-	sc->cur_scp = scp;
-
-	/* copy screen to temporary buffer */
-	sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
-		    (void *)scp->sc->adp->va_window, FALSE);
-	if (ISTEXTSC(scp))
-	    sc_vtb_copy(&scp->scr, 0, &scp->vtb, 0, scp->xsize*scp->ysize);
-
-	/* move cursors to the initial positions */
-	scp->mouse_pos = scp->mouse_oldpos = 0;
-	if (col >= scp->xsize)
-	    col = 0;
-	if (row >= scp->ysize)
-	    row = scp->ysize - 1;
-	scp->xpos = col;
-	scp->ypos = row;
-	scp->cursor_pos = scp->cursor_oldpos = row*scp->xsize + col;
-
-	if (bios_value.cursor_end < scp->font_size)
-	    sc->dflt_curs_attr.base = scp->font_size - 
-					  bios_value.cursor_end - 1;
-	else
-	    sc->dflt_curs_attr.base = 0;
-	i = bios_value.cursor_end - bios_value.cursor_start + 1;
-	sc->dflt_curs_attr.height = imin(i, scp->font_size);
-	sc->dflt_curs_attr.flags = 0;
-	sc->curs_attr = sc->dflt_curs_attr;
-	scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
-
-	if (!ISGRAPHSC(scp)) {
-    	    sc_set_cursor_image(scp);
-    	    sc_draw_cursor_image(scp);
-	}
-
-	/* save font and palette */
-#ifndef SC_NO_FONT_LOADING
-	sc->fonts_loaded = 0;
-	if (ISFONTAVAIL(sc->adp->va_flags)) {
-#ifdef SC_DFLT_FONT
-	    bcopy(dflt_font_8, sc->font_8, sizeof(dflt_font_8));
-	    bcopy(dflt_font_14, sc->font_14, sizeof(dflt_font_14));
-	    bcopy(dflt_font_16, sc->font_16, sizeof(dflt_font_16));
-	    sc->fonts_loaded = FONT_16 | FONT_14 | FONT_8;
-	    if (scp->font_size < 14) {
-		sc_load_font(scp, 0, 8, sc->font_8, 0, 256);
-	    } else if (scp->font_size >= 16) {
-		sc_load_font(scp, 0, 16, sc->font_16, 0, 256);
-	    } else {
-		sc_load_font(scp, 0, 14, sc->font_14, 0, 256);
-	    }
-#else /* !SC_DFLT_FONT */
-	    if (scp->font_size < 14) {
-		sc_save_font(scp, 0, 8, sc->font_8, 0, 256);
-		sc->fonts_loaded = FONT_8;
-	    } else if (scp->font_size >= 16) {
-		sc_save_font(scp, 0, 16, sc->font_16, 0, 256);
-		sc->fonts_loaded = FONT_16;
-	    } else {
-		sc_save_font(scp, 0, 14, sc->font_14, 0, 256);
-		sc->fonts_loaded = FONT_14;
-	    }
-#endif /* SC_DFLT_FONT */
-	    /* FONT KLUDGE: always use the font page #0. XXX */
-	    sc_show_font(scp, 0);
-	}
-#endif /* !SC_NO_FONT_LOADING */
-
-#ifndef SC_NO_PALETTE_LOADING
-	save_palette(sc->adp, sc->palette);
-#endif
-
-#ifdef DEV_SPLASH
-	if (!(sc->flags & SC_SPLASH_SCRN) && (flags & SC_KERNEL_CONSOLE)) {
-	    /* we are ready to put up the splash image! */
-	    splash_init(sc->adp, scsplash_callback, sc);
-	    sc->flags |= SC_SPLASH_SCRN;
-	}
-#endif
-    }
-
-    /* the rest is not necessary, if we have done it once */
-    if (sc->flags & SC_INIT_DONE)
-	return;
-
-    /* initialize mapscrn arrays to a one to one map */
-    for (i = 0; i < sizeof(sc->scr_map); i++)
-	sc->scr_map[i] = sc->scr_rmap[i] = i;
-#ifdef PC98
-    sc->scr_map[0x5c] = (u_char)0xfc;	/* for backslash */
-#endif
-
-    sc->flags |= SC_INIT_DONE;
-}
-
-#if __i386__
-static void
-scterm(int unit, int flags)
-{
-    sc_softc_t *sc;
-    scr_stat *scp;
-
-    sc = sc_get_softc(unit, flags & SC_KERNEL_CONSOLE);
-    if (sc == NULL)
-	return;			/* shouldn't happen */
-
-#ifdef DEV_SPLASH
-    /* this console is no longer available for the splash screen */
-    if (sc->flags & SC_SPLASH_SCRN) {
-	splash_term(sc->adp);
-	sc->flags &= ~SC_SPLASH_SCRN;
-    }
-#endif
-
-    /* release the keyboard and the video card */
-    if (sc->keyboard >= 0)
-	kbd_release(sc->kbd, &sc->keyboard);
-    if (sc->adapter >= 0)
-	vid_release(sc->adp, &sc->adapter);
-
-    /* stop the terminal emulator, if any */
-    scp = SC_STAT(sc->dev[0]);
-    if (scp->tsw)
-	(*scp->tsw->te_term)(scp, &scp->ts);
-    if (scp->ts != NULL)
-	free(scp->ts, M_DEVBUF);
-
-    /* clear the structure */
-    if (!(flags & SC_KERNEL_CONSOLE)) {
-	/* XXX: We need delete_dev() for this */
-	free(sc->dev, M_DEVBUF);
-#if 0
-	/* XXX: We need a ttyunregister for this */
-	free(sc->tty, M_DEVBUF);
-#endif
-#ifndef SC_NO_FONT_LOADING
-	free(sc->font_8, M_DEVBUF);
-	free(sc->font_14, M_DEVBUF);
-	free(sc->font_16, M_DEVBUF);
-#endif
-	/* XXX vtb, history */
-    }
-    bzero(sc, sizeof(*sc));
-    sc->keyboard = -1;
-    sc->adapter = -1;
-}
-#endif
-
-static void
-scshutdown(void *arg, int howto)
-{
-    /* assert(sc_console != NULL) */
-
-    sc_touch_scrn_saver();
-    if (!cold && sc_console
-	&& sc_console->sc->cur_scp->smode.mode == VT_AUTO 
-	&& sc_console->smode.mode == VT_AUTO)
-	sc_switch_scr(sc_console->sc, sc_console->index);
-    shutdown_in_progress = TRUE;
-}
-
-int
-sc_clean_up(scr_stat *scp)
-{
-#ifdef DEV_SPLASH
-    int error;
-#endif
-
-    if (scp->sc->flags & SC_SCRN_BLANKED) {
-	sc_touch_scrn_saver();
-#ifdef DEV_SPLASH
-	if ((error = wait_scrn_saver_stop(scp->sc)))
-	    return error;
-#endif
-    }
-    scp->status |= MOUSE_HIDDEN;
-    sc_remove_mouse_image(scp);
-    sc_remove_cutmarking(scp);
-    return 0;
-}
-
-void
-sc_alloc_scr_buffer(scr_stat *scp, int wait, int discard)
-{
-    sc_vtb_t new;
-    sc_vtb_t old;
-
-    old = scp->vtb;
-    sc_vtb_init(&new, VTB_MEMORY, scp->xsize, scp->ysize, NULL, wait);
-    if (!discard && (old.vtb_flags & VTB_VALID)) {
-	/* retain the current cursor position and buffer contants */
-	scp->cursor_oldpos = scp->cursor_pos;
-	/* 
-	 * This works only if the old buffer has the same size as or larger 
-	 * than the new one. XXX
-	 */
-	sc_vtb_copy(&old, 0, &new, 0, scp->xsize*scp->ysize);
-	scp->vtb = new;
-    } else {
-	scp->vtb = new;
-	sc_vtb_destroy(&old);
-    }
-
-#ifndef SC_NO_SYSMOUSE
-    /* move the mouse cursor at the center of the screen */
-    sc_mouse_move(scp, scp->xpixel / 2, scp->ypixel / 2);
-#endif
-}
-
-static scr_stat
-*alloc_scp(sc_softc_t *sc, int vty)
-{
-    scr_stat *scp;
-
-    /* assert(sc_malloc) */
-
-    scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
-    init_scp(sc, vty, scp);
-
-    sc_alloc_scr_buffer(scp, TRUE, TRUE);
-    if (sc_init_emulator(scp, SC_DFLT_TERM))
-	sc_init_emulator(scp, "*");
-
-#ifndef SC_NO_CUTPASTE
-    sc_alloc_cut_buffer(scp, TRUE);
-#endif
-
-#ifndef SC_NO_HISTORY
-    sc_alloc_history_buffer(scp, 0, 0, TRUE);
-#endif
-
-    return scp;
-}
-
-static void
-init_scp(sc_softc_t *sc, int vty, scr_stat *scp)
-{
-    video_info_t info;
-
-    bzero(scp, sizeof(*scp));
-
-    scp->index = vty;
-    scp->sc = sc;
-    scp->status = 0;
-    scp->mode = sc->initial_mode;
-    (*vidsw[sc->adapter]->get_info)(sc->adp, scp->mode, &info);
-    if (info.vi_flags & V_INFO_GRAPHICS) {
-	scp->status |= GRAPHICS_MODE;
-	scp->xpixel = info.vi_width;
-	scp->ypixel = info.vi_height;
-	scp->xsize = info.vi_width/info.vi_cwidth;
-	scp->ysize = info.vi_height/info.vi_cheight;
-	scp->font_size = 0;
-	scp->font = NULL;
-    } else {
-	scp->xsize = info.vi_width;
-	scp->ysize = info.vi_height;
-	scp->xpixel = scp->xsize*info.vi_cwidth;
-	scp->ypixel = scp->ysize*info.vi_cheight;
-	if (info.vi_cheight < 14) {
-	    scp->font_size = 8;
-#ifndef SC_NO_FONT_LOADING
-	    scp->font = sc->font_8;
-#else
-	    scp->font = NULL;
-#endif
-	} else if (info.vi_cheight >= 16) {
-	    scp->font_size = 16;
-#ifndef SC_NO_FONT_LOADING
-	    scp->font = sc->font_16;
-#else
-	    scp->font = NULL;
-#endif
-	} else {
-	    scp->font_size = 14;
-#ifndef SC_NO_FONT_LOADING
-	    scp->font = sc->font_14;
-#else
-	    scp->font = NULL;
-#endif
-	}
-    }
-    sc_vtb_init(&scp->vtb, VTB_MEMORY, 0, 0, NULL, FALSE);
-    sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, 0, 0, NULL, FALSE);
-    scp->xoff = scp->yoff = 0;
-    scp->xpos = scp->ypos = 0;
-    scp->start = scp->xsize * scp->ysize - 1;
-    scp->end = 0;
-    scp->tsw = NULL;
-    scp->ts = NULL;
-    scp->rndr = NULL;
-    scp->border = BG_BLACK;
-    scp->curr_curs_attr = scp->dflt_curs_attr = sc->curs_attr;
-    scp->mouse_xpos = scp->xoff*8 + scp->xsize*8/2;
-    scp->mouse_ypos = (scp->ysize + scp->yoff)*scp->font_size/2;
-    scp->mouse_cut_start = scp->xsize*scp->ysize;
-    scp->mouse_cut_end = -1;
-    scp->mouse_signal = 0;
-    scp->mouse_pid = 0;
-    scp->mouse_proc = NULL;
-    scp->kbd_mode = K_XLATE;
-    scp->bell_pitch = bios_value.bell_pitch;
-    scp->bell_duration = BELL_DURATION;
-    scp->status |= (bios_value.shift_state & NLKED);
-    scp->status |= CURSOR_ENABLED | MOUSE_HIDDEN;
-    scp->pid = 0;
-    scp->proc = NULL;
-    scp->smode.mode = VT_AUTO;
-    scp->history = NULL;
-    scp->history_pos = 0;
-    scp->history_size = 0;
-}
-
-int
-sc_init_emulator(scr_stat *scp, char *name)
-{
-    sc_term_sw_t *sw;
-    sc_rndr_sw_t *rndr;
-    void *p;
-    int error;
-
-    if (name == NULL)	/* if no name is given, use the current emulator */
-	sw = scp->tsw;
-    else		/* ...otherwise find the named emulator */
-	sw = sc_term_match(name);
-    if (sw == NULL)
-	return EINVAL;
-
-    rndr = NULL;
-    if (strcmp(sw->te_renderer, "*") != 0) {
-	rndr = sc_render_match(scp, sw->te_renderer,
-			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
-    }
-    if (rndr == NULL) {
-	rndr = sc_render_match(scp, scp->sc->adp->va_name,
-			       scp->status & (GRAPHICS_MODE | PIXEL_MODE));
-	if (rndr == NULL)
-	    return ENODEV;
-    }
-
-    if (sw == scp->tsw) {
-	error = (*sw->te_init)(scp, &scp->ts, SC_TE_WARM_INIT);
-	scp->rndr = rndr;
-	sc_clear_screen(scp);
-	/* assert(error == 0); */
-	return error;
-    }
-
-    if (sc_malloc && (sw->te_size > 0))
-	p = malloc(sw->te_size, M_DEVBUF, M_NOWAIT);
-    else
-	p = NULL;
-    error = (*sw->te_init)(scp, &p, SC_TE_COLD_INIT);
-    if (error)
-	return error;
-
-    if (scp->tsw)
-	(*scp->tsw->te_term)(scp, &scp->ts);
-    if (scp->ts != NULL)
-	free(scp->ts, M_DEVBUF);
-    scp->tsw = sw;
-    scp->ts = p;
-    scp->rndr = rndr;
-
-    /* XXX */
-    (*sw->te_default_attr)(scp, user_default.std_color, user_default.rev_color);
-    sc_clear_screen(scp);
-
-    return 0;
-}
-
-/*
- * scgetc(flags) - get character from keyboard.
- * If flags & SCGETC_CN, then avoid harmful side effects.
- * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
- * return NOKEY if there is nothing there.
- */
-static u_int
-scgetc(sc_softc_t *sc, u_int flags)
-{
-    scr_stat *scp;
-#ifndef SC_NO_HISTORY
-    struct tty *tp;
-#endif
-    u_int c;
-    int this_scr;
-    int f;
-    int i;
-
-    if (sc->kbd == NULL)
-	return NOKEY;
-
-next_code:
-#if 1
-    /* I don't like this, but... XXX */
-    if (flags & SCGETC_CN)
-	sccnupdate(sc->cur_scp);
-#endif
-    scp = sc->cur_scp;
-    /* first see if there is something in the keyboard port */
-    for (;;) {
-	c = kbd_read_char(sc->kbd, !(flags & SCGETC_NONBLOCK));
-	if (c == ERRKEY) {
-	    if (!(flags & SCGETC_CN))
-		sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
-	} else if (c == NOKEY)
-	    return c;
-	else
-	    break;
-    }
-
-    /* make screensaver happy */
-    if (!(c & RELKEY))
-	sc_touch_scrn_saver();
-
-    if (!(flags & SCGETC_CN))
-	random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
-
-    if (scp->kbd_mode != K_XLATE)
-	return KEYCHAR(c);
-
-    /* if scroll-lock pressed allow history browsing */
-    if (!ISGRAPHSC(scp) && scp->history && scp->status & SLKED) {
-
-	scp->status &= ~CURSOR_ENABLED;
-	sc_remove_cursor_image(scp);
-
-#ifndef SC_NO_HISTORY
-	if (!(scp->status & BUFFER_SAVED)) {
-	    scp->status |= BUFFER_SAVED;
-	    sc_hist_save(scp);
-	}
-	switch (c) {
-	/* FIXME: key codes */
-	case SPCLKEY | FKEY | F(49):  /* home key */
-	    sc_remove_cutmarking(scp);
-	    sc_hist_home(scp);
-	    goto next_code;
-
-	case SPCLKEY | FKEY | F(57):  /* end key */
-	    sc_remove_cutmarking(scp);
-	    sc_hist_end(scp);
-	    goto next_code;
-
-	case SPCLKEY | FKEY | F(50):  /* up arrow key */
-	    sc_remove_cutmarking(scp);
-	    if (sc_hist_up_line(scp))
-		if (!(flags & SCGETC_CN))
-		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
-	    goto next_code;
-
-	case SPCLKEY | FKEY | F(58):  /* down arrow key */
-	    sc_remove_cutmarking(scp);
-	    if (sc_hist_down_line(scp))
-		if (!(flags & SCGETC_CN))
-		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
-	    goto next_code;
-
-	case SPCLKEY | FKEY | F(51):  /* page up key */
-	    sc_remove_cutmarking(scp);
-	    for (i=0; i<scp->ysize; i++)
-	    if (sc_hist_up_line(scp)) {
-		if (!(flags & SCGETC_CN))
-		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
-		break;
-	    }
-	    goto next_code;
-
-	case SPCLKEY | FKEY | F(59):  /* page down key */
-	    sc_remove_cutmarking(scp);
-	    for (i=0; i<scp->ysize; i++)
-	    if (sc_hist_down_line(scp)) {
-		if (!(flags & SCGETC_CN))
-		    sc_bell(scp, bios_value.bell_pitch, BELL_DURATION);
-		break;
-	    }
-	    goto next_code;
-	}
-#endif /* SC_NO_HISTORY */
-    }
-
-    /* 
-     * Process and consume special keys here.  Return a plain char code
-     * or a char code with the META flag or a function key code.
-     */
-    if (c & RELKEY) {
-	/* key released */
-	/* goto next_code */
-    } else {
-	/* key pressed */
-	if (c & SPCLKEY) {
-	    c &= ~SPCLKEY;
-	    switch (KEYCHAR(c)) {
-	    /* LOCKING KEYS */
-	    case NLK: case CLK: case ALK:
-		break;
-	    case SLK:
-		kbd_ioctl(sc->kbd, KDGKBSTATE, (caddr_t)&f);
-		if (f & SLKED) {
-		    scp->status |= SLKED;
-		} else {
-		    if (scp->status & SLKED) {
-			scp->status &= ~SLKED;
-#ifndef SC_NO_HISTORY
-			if (scp->status & BUFFER_SAVED) {
-			    if (!sc_hist_restore(scp))
-				sc_remove_cutmarking(scp);
-			    scp->status &= ~BUFFER_SAVED;
-			    scp->status |= CURSOR_ENABLED;
-			    sc_draw_cursor_image(scp);
-			}
-			tp = VIRTUAL_TTY(sc, scp->index);
-			if (ISTTYOPEN(tp))
-			    scstart(tp);
-#endif
-		    }
-		}
-		break;
-
-	    case PASTE:
-#ifndef SC_NO_CUTPASTE
-		sc_mouse_paste(scp);
-#endif
-		break;
-
-	    /* NON-LOCKING KEYS */
-	    case NOP:
-	    case LSH:  case RSH:  case LCTR: case RCTR:
-	    case LALT: case RALT: case ASH:  case META:
-		break;
-
-	    case BTAB:
-		if (!(sc->flags & SC_SCRN_BLANKED))
-		    return c;
-		break;
-
-	    case SPSC:
-#ifdef DEV_SPLASH
-		/* force activatation/deactivation of the screen saver */
-		if (!(sc->flags & SC_SCRN_BLANKED)) {
-		    run_scrn_saver = TRUE;
-		    sc->scrn_time_stamp -= scrn_blank_time;
-		}
-		if (cold) {
-		    /*
-		     * While devices are being probed, the screen saver need
-		     * to be invoked explictly. XXX
-		     */
-		    if (sc->flags & SC_SCRN_BLANKED) {
-			scsplash_stick(FALSE);
-			stop_scrn_saver(sc, current_saver);
-		    } else {
-			if (!ISGRAPHSC(scp)) {
-			    scsplash_stick(TRUE);
-			    (*current_saver)(sc, TRUE);
-			}
-		    }
-		}
-#endif /* DEV_SPLASH */
-		break;
-
-	    case RBT:
-#ifndef SC_DISABLE_REBOOT
-		shutdown_nice(0);
-#endif
-		break;
-
-	    case HALT:
-#ifndef SC_DISABLE_REBOOT
-		shutdown_nice(RB_HALT);
-#endif
-		break;
-
-	    case PDWN:
-#ifndef SC_DISABLE_REBOOT
-		shutdown_nice(RB_HALT|RB_POWEROFF);
-#endif
-		break;
-
-	    case SUSP:
-		power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
-		break;
-	    case STBY:
-		power_pm_suspend(POWER_SLEEP_STATE_STANDBY);
-		break;
-
-	    case DBG:
-#ifndef SC_DISABLE_DDBKEY
-#ifdef DDB
-		Debugger("manual escape to debugger");
-#else
-		printf("No debugger in kernel\n");
-#endif
-#else /* SC_DISABLE_DDBKEY */
-		/* do nothing */
-#endif /* SC_DISABLE_DDBKEY */
-		break;
-
-	    case PNC:
-		if (enable_panic_key)
-			panic("Forced by the panic key");
-		break;
-
-	    case NEXT:
-		this_scr = scp->index;
-		for (i = (this_scr - sc->first_vty + 1)%sc->vtys;
-			sc->first_vty + i != this_scr; 
-			i = (i + 1)%sc->vtys) {
-		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
-		    if (ISTTYOPEN(tp)) {
-			sc_switch_scr(scp->sc, sc->first_vty + i);
-			break;
-		    }
-		}
-		break;
-
-	    case PREV:
-		this_scr = scp->index;
-		for (i = (this_scr - sc->first_vty + sc->vtys - 1)%sc->vtys;
-			sc->first_vty + i != this_scr;
-			i = (i + sc->vtys - 1)%sc->vtys) {
-		    struct tty *tp = VIRTUAL_TTY(sc, sc->first_vty + i);
-		    if (ISTTYOPEN(tp)) {
-			sc_switch_scr(scp->sc, sc->first_vty + i);
-			break;
-		    }
-		}
-		break;
-
-	    default:
-		if (KEYCHAR(c) >= F_SCR && KEYCHAR(c) <= L_SCR) {
-		    sc_switch_scr(scp->sc, sc->first_vty + KEYCHAR(c) - F_SCR);
-		    break;
-		}
-		/* assert(c & FKEY) */
-		if (!(sc->flags & SC_SCRN_BLANKED))
-		    return c;
-		break;
-	    }
-	    /* goto next_code */
-	} else {
-	    /* regular keys (maybe MKEY is set) */
-	    if (!(sc->flags & SC_SCRN_BLANKED))
-		return c;
-	}
-    }
-
-    goto next_code;
-}
-
-static int
-scmmap(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
-{
-    scr_stat *scp;
-
-    scp = SC_STAT(dev);
-    if (scp != scp->sc->cur_scp)
-	return -1;
-    return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, paddr, nprot);
-}
-
-static int
-save_kbd_state(scr_stat *scp)
-{
-    int state;
-    int error;
-
-    error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
-    if (error == ENOIOCTL)
-	error = ENODEV;
-    if (error == 0) {
-	scp->status &= ~LOCK_MASK;
-	scp->status |= state;
-    }
-    return error;
-}
-
-static int
-update_kbd_state(scr_stat *scp, int new_bits, int mask)
-{
-    int state;
-    int error;
-
-    if (mask != LOCK_MASK) {
-	error = kbd_ioctl(scp->sc->kbd, KDGKBSTATE, (caddr_t)&state);
-	if (error == ENOIOCTL)
-	    error = ENODEV;
-	if (error)
-	    return error;
-	state &= ~mask;
-	state |= new_bits & mask;
-    } else {
-	state = new_bits & LOCK_MASK;
-    }
-    error = kbd_ioctl(scp->sc->kbd, KDSKBSTATE, (caddr_t)&state);
-    if (error == ENOIOCTL)
-	error = ENODEV;
-    return error;
-}
-
-static int
-update_kbd_leds(scr_stat *scp, int which)
-{
-    int error;
-
-    which &= LOCK_MASK;
-    error = kbd_ioctl(scp->sc->kbd, KDSETLED, (caddr_t)&which);
-    if (error == ENOIOCTL)
-	error = ENODEV;
-    return error;
-}
-
-int
-set_mode(scr_stat *scp)
-{
-    video_info_t info;
-
-    /* reject unsupported mode */
-    if ((*vidsw[scp->sc->adapter]->get_info)(scp->sc->adp, scp->mode, &info))
-	return 1;
-
-    /* if this vty is not currently showing, do nothing */
-    if (scp != scp->sc->cur_scp)
-	return 0;
-
-    /* setup video hardware for the given mode */
-    (*vidsw[scp->sc->adapter]->set_mode)(scp->sc->adp, scp->mode);
-    sc_vtb_init(&scp->scr, VTB_FRAMEBUFFER, scp->xsize, scp->ysize,
-		(void *)scp->sc->adp->va_window, FALSE);
-
-#ifndef SC_NO_FONT_LOADING
-    /* load appropriate font */
-    if (!(scp->status & GRAPHICS_MODE)) {
-	if (!(scp->status & PIXEL_MODE) && ISFONTAVAIL(scp->sc->adp->va_flags)) {
-	    if (scp->font_size < 14) {
-		if (scp->sc->fonts_loaded & FONT_8)
-		    sc_load_font(scp, 0, 8, scp->sc->font_8, 0, 256);
-	    } else if (scp->font_size >= 16) {
-		if (scp->sc->fonts_loaded & FONT_16)
-		    sc_load_font(scp, 0, 16, scp->sc->font_16, 0, 256);
-	    } else {
-		if (scp->sc->fonts_loaded & FONT_14)
-		    sc_load_font(scp, 0, 14, scp->sc->font_14, 0, 256);
-	    }
-	    /*
-	     * FONT KLUDGE:
-	     * This is an interim kludge to display correct font.
-	     * Always use the font page #0 on the video plane 2.
-	     * Somehow we cannot show the font in other font pages on
-	     * some video cards... XXX
-	     */ 
-	    sc_show_font(scp, 0);
-	}
-	mark_all(scp);
-    }
-#endif /* !SC_NO_FONT_LOADING */
-
-    sc_set_border(scp, scp->border);
-    sc_set_cursor_image(scp);
-
-    return 0;
-}
-
-void
-sc_set_border(scr_stat *scp, int color)
-{
-    ++scp->sc->videoio_in_progress;
-    (*scp->rndr->draw_border)(scp, color);
-    --scp->sc->videoio_in_progress;
-}
-
-#ifndef SC_NO_FONT_LOADING
-void
-sc_load_font(scr_stat *scp, int page, int size, u_char *buf,
-	     int base, int count)
-{
-    sc_softc_t *sc;
-
-    sc = scp->sc;
-    sc->font_loading_in_progress = TRUE;
-    (*vidsw[sc->adapter]->load_font)(sc->adp, page, size, buf, base, count);
-    sc->font_loading_in_progress = FALSE;
-}
-
-void
-sc_save_font(scr_stat *scp, int page, int size, u_char *buf,
-	     int base, int count)
-{
-    sc_softc_t *sc;
-
-    sc = scp->sc;
-    sc->font_loading_in_progress = TRUE;
-    (*vidsw[sc->adapter]->save_font)(sc->adp, page, size, buf, base, count);
-    sc->font_loading_in_progress = FALSE;
-}
-
-void
-sc_show_font(scr_stat *scp, int page)
-{
-    (*vidsw[scp->sc->adapter]->show_font)(scp->sc->adp, page);
-}
-#endif /* !SC_NO_FONT_LOADING */
-
-void
-sc_paste(scr_stat *scp, u_char *p, int count) 
-{
-    struct tty *tp;
-    u_char *rmap;
-
-    tp = VIRTUAL_TTY(scp->sc, scp->sc->cur_scp->index);
-    if (!ISTTYOPEN(tp))
-	return;
-    rmap = scp->sc->scr_rmap;
-    for (; count > 0; --count)
-	(*linesw[tp->t_line].l_rint)(rmap[*p++], tp);
-}
-
-void
-sc_bell(scr_stat *scp, int pitch, int duration)
-{
-    if (cold || shutdown_in_progress || !enable_bell)
-	return;
-
-    if (scp != scp->sc->cur_scp && (scp->sc->flags & SC_QUIET_BELL))
-	return;
-
-    if (scp->sc->flags & SC_VISUAL_BELL) {
-	if (scp->sc->blink_in_progress)
-	    return;
-	scp->sc->blink_in_progress = 3;
-	if (scp != scp->sc->cur_scp)
-	    scp->sc->blink_in_progress += 2;
-	blink_screen(scp->sc->cur_scp);
-    } else if (duration != 0 && pitch != 0) {
-	if (scp != scp->sc->cur_scp)
-	    pitch *= 2;
-	sysbeep(pitch, duration);
-    }
-}
-
-static void
-blink_screen(void *arg)
-{
-    scr_stat *scp = arg;
-    struct tty *tp;
-
-    if (ISGRAPHSC(scp) || (scp->sc->blink_in_progress <= 1)) {
-	scp->sc->blink_in_progress = 0;
-    	mark_all(scp);
-	tp = VIRTUAL_TTY(scp->sc, scp->index);
-	if (ISTTYOPEN(tp))
-	    scstart(tp);
-	if (scp->sc->delayed_next_scr)
-	    sc_switch_scr(scp->sc, scp->sc->delayed_next_scr - 1);
-    }
-    else {
-	(*scp->rndr->draw)(scp, 0, scp->xsize*scp->ysize, 
-			   scp->sc->blink_in_progress & 1);
-	scp->sc->blink_in_progress--;
-	timeout(blink_screen, scp, hz / 10);
-    }
-}