syscons.c revision 22640
1/*-
2 * Copyright (c) 1992-1997 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *  $FreeBSD: head/sys/dev/syscons/syscons.c 22640 1997-02-13 11:58:49Z sos $
29 */
30
31#include "sc.h"
32#include "apm.h"
33#include "opt_ddb.h"
34#include "opt_syscons.h"
35
36#if NSC > 0
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/conf.h>
40#include <sys/ioctl.h>
41#include <sys/proc.h>
42#include <sys/signalvar.h>
43#include <sys/tty.h>
44#include <sys/uio.h>
45#include <sys/callout.h>
46#include <sys/kernel.h>
47#include <sys/syslog.h>
48#include <sys/errno.h>
49#include <sys/malloc.h>
50#ifdef	DEVFS
51#include <sys/devfsext.h>
52#endif
53
54#include <machine/clock.h>
55#include <machine/cons.h>
56#include <machine/console.h>
57#include <machine/md_var.h>
58#include <machine/psl.h>
59#include <machine/frame.h>
60#include <machine/pc/display.h>
61#include <machine/apm_bios.h>
62#include <machine/random.h>
63
64#include <vm/vm.h>
65#include <vm/vm_param.h>
66#include <vm/pmap.h>
67
68#include <i386/isa/isa.h>
69#include <i386/isa/isa_device.h>
70#include <i386/isa/timerreg.h>
71#include <i386/isa/kbdtables.h>
72#include <i386/isa/kbdio.h>
73#include <i386/isa/syscons.h>
74
75#if !defined(MAXCONS)
76#define MAXCONS 16
77#endif
78
79#define COLD 0
80#define WARM 1
81
82/* this may break on older VGA's but is useful on real 32 bit systems */
83#define bcopyw  bcopy
84
85static default_attr user_default = {
86    (FG_LIGHTGREY | BG_BLACK) << 8,
87    (FG_BLACK | BG_LIGHTGREY) << 8
88};
89
90static default_attr kernel_default = {
91    (FG_WHITE | BG_BLACK) << 8,
92    (FG_BLACK | BG_LIGHTGREY) << 8
93};
94
95static  scr_stat    	main_console;
96static  scr_stat    	*console[MAXCONS];
97#ifdef DEVFS
98static	void		*sc_devfs_token[MAXCONS];
99#endif
100	scr_stat    	*cur_console;
101static  scr_stat    	*new_scp, *old_scp;
102static  term_stat   	kernel_console;
103static  default_attr    *current_default;
104static  int     	flags = 0;
105static  int		sc_port = IO_KBD;
106static  KBDC		sc_kbdc = NULL;
107static  char        	init_done = COLD;
108static  u_short		sc_buffer[ROW*COL];
109static  char        	switch_in_progress = FALSE;
110static  char        	write_in_progress = FALSE;
111static  char        	blink_in_progress = FALSE;
112static  int        	blinkrate = 0;
113	u_int       	crtc_addr = MONO_BASE;
114	char        	crtc_vga = FALSE;
115static  u_char      	shfts = 0, ctls = 0, alts = 0, agrs = 0, metas = 0;
116static  u_char      	nlkcnt = 0, clkcnt = 0, slkcnt = 0, alkcnt = 0;
117static  const u_int     n_fkey_tab = sizeof(fkey_tab) / sizeof(*fkey_tab);
118static  int     	delayed_next_scr = FALSE;
119static  long        	scrn_blank_time = 0;    /* screen saver timeout value */
120	int     	scrn_blanked = FALSE;   /* screen saver active flag */
121static  long       	scrn_time_stamp;
122	u_char      	scr_map[256];
123	u_char      	scr_rmap[256];
124	char        	*video_mode_ptr = NULL;
125	int     	fonts_loaded = 0;
126	char        	font_8[256*8];
127	char		font_14[256*14];
128	char		font_16[256*16];
129	char        	palette[256*3];
130static	char 		*cut_buffer;
131static  u_short 	mouse_and_mask[16] = {
132				0xc000, 0xe000, 0xf000, 0xf800,
133				0xfc00, 0xfe00, 0xff00, 0xff80,
134				0xfe00, 0x1e00, 0x1f00, 0x0f00,
135				0x0f00, 0x0000, 0x0000, 0x0000
136			};
137static  u_short 	mouse_or_mask[16] = {
138				0x0000, 0x4000, 0x6000, 0x7000,
139				0x7800, 0x7c00, 0x7e00, 0x6800,
140				0x0c00, 0x0c00, 0x0600, 0x0600,
141				0x0000, 0x0000, 0x0000, 0x0000
142			};
143
144static void    		none_saver(int blank) { }
145void    		(*current_saver)(int blank) = none_saver;
146int  			(*sc_user_ioctl)(dev_t dev, int cmd, caddr_t data,
147					 int flag, struct proc *p) = NULL;
148
149/* OS specific stuff */
150#ifdef not_yet_done
151#define VIRTUAL_TTY(x)  (sccons[x] = ttymalloc(sccons[x]))
152struct  CONSOLE_TTY 	(sccons[MAXCONS] = ttymalloc(sccons[MAXCONS]))
153struct  MOUSE_TTY 	(sccons[MAXCONS+1] = ttymalloc(sccons[MAXCONS+1]))
154struct  tty         	*sccons[MAXCONS+2];
155#else
156#define VIRTUAL_TTY(x)  &sccons[x]
157#define CONSOLE_TTY 	&sccons[MAXCONS]
158#define MOUSE_TTY 	&sccons[MAXCONS+1]
159static struct tty     	sccons[MAXCONS+2];
160#endif
161#define SC_MOUSE 	128
162#define SC_CONSOLE	255
163#define MONO_BUF    	pa_to_va(0xB0000)
164#define CGA_BUF     	pa_to_va(0xB8000)
165u_short         	*Crtat;
166static const int	nsccons = MAXCONS+2;
167
168#define WRAPHIST(scp, pointer, offset)\
169    ((scp->history) + ((((pointer) - (scp->history)) + (scp->history_size)\
170    + (offset)) % (scp->history_size)))
171
172/* prototypes */
173static int scattach(struct isa_device *dev);
174static int scparam(struct tty *tp, struct termios *t);
175static int scprobe(struct isa_device *dev);
176static void scstart(struct tty *tp);
177static void scmousestart(struct tty *tp);
178static void scinit(void);
179static u_int scgetc(u_int flags);
180#define SCGETC_CN	1
181#define SCGETC_NONBLOCK	2
182static scr_stat *get_scr_stat(dev_t dev);
183static scr_stat *alloc_scp(void);
184static void init_scp(scr_stat *scp);
185static int get_scr_num(void);
186static void scrn_timer(void);
187static void clear_screen(scr_stat *scp);
188static int switch_scr(scr_stat *scp, u_int next_scr);
189static void exchange_scr(void);
190static inline void move_crsr(scr_stat *scp, int x, int y);
191static void scan_esc(scr_stat *scp, u_char c);
192static void draw_cursor_image(scr_stat *scp);
193static void remove_cursor_image(scr_stat *scp);
194static void ansi_put(scr_stat *scp, u_char *buf, int len);
195static u_char *get_fstr(u_int c, u_int *len);
196static void history_to_screen(scr_stat *scp);
197static int history_up_line(scr_stat *scp);
198static int history_down_line(scr_stat *scp);
199static int mask2attr(struct term_stat *term);
200static void set_keyboard(int command, int data);
201static void update_leds(int which);
202static void set_vgaregs(char *modetable);
203static void set_font_mode(void);
204static void set_normal_mode(void);
205static void set_destructive_cursor(scr_stat *scp);
206static void set_mouse_pos(scr_stat *scp);
207static void mouse_cut_start(scr_stat *scp);
208static void mouse_cut_end(scr_stat *scp);
209static void mouse_paste(scr_stat *scp);
210static void draw_mouse_image(scr_stat *scp);
211static void remove_mouse_image(scr_stat *scp);
212static void draw_cutmarking(scr_stat *scp);
213static void remove_cutmarking(scr_stat *scp);
214static void save_palette(void);
215static void do_bell(scr_stat *scp, int pitch, int duration);
216static void blink_screen(scr_stat *scp);
217#ifdef SC_SPLASH_SCREEN
218static void toggle_splash_screen(scr_stat *scp);
219#endif
220
221struct  isa_driver scdriver = {
222    scprobe, scattach, "sc", 1
223};
224
225static	d_open_t	scopen;
226static	d_close_t	scclose;
227static	d_read_t	scread;
228static	d_write_t	scwrite;
229static	d_ioctl_t	scioctl;
230static	d_devtotty_t	scdevtotty;
231static	d_mmap_t	scmmap;
232
233#define CDEV_MAJOR 12
234static	struct cdevsw	scdevsw = {
235	scopen,		scclose,	scread,		scwrite,
236	scioctl,	nullstop,	noreset,	scdevtotty,
237	ttselect,	scmmap,		nostrategy,	"sc",	NULL,	-1 };
238
239/*
240 * These functions need to be before calls to them so they can be inlined.
241 */
242static inline void
243draw_cursor_image(scr_stat *scp)
244{
245    u_short cursor_image, *ptr = Crtat + (scp->cursor_pos - scp->scr_buf);
246
247    /* do we have a destructive cursor ? */
248    if (flags & CHAR_CURSOR) {
249	cursor_image = *scp->cursor_pos;
250	scp->cursor_saveunder = cursor_image;
251	/* modify cursor_image */
252	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
253	    set_destructive_cursor(scp);
254	    cursor_image &= 0xff00;
255	    cursor_image |= DEAD_CHAR;
256	}
257    }
258    else {
259	cursor_image = (*(ptr) & 0x00ff) | *(scp->cursor_pos) & 0xff00;
260	scp->cursor_saveunder = cursor_image;
261	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
262	    if ((cursor_image & 0x7000) == 0x7000) {
263		cursor_image &= 0x8fff;
264		if(!(cursor_image & 0x0700))
265		    cursor_image |= 0x0700;
266	    } else {
267		cursor_image |= 0x7000;
268		if ((cursor_image & 0x0700) == 0x0700)
269		    cursor_image &= 0xf0ff;
270	    }
271	}
272    }
273    *ptr = cursor_image;
274}
275
276static inline void
277remove_cursor_image(scr_stat *scp)
278{
279    *(Crtat + (scp->cursor_oldpos - scp->scr_buf)) = scp->cursor_saveunder;
280}
281
282static inline void
283move_crsr(scr_stat *scp, int x, int y)
284{
285    if (x < 0)
286	x = 0;
287    if (y < 0)
288	y = 0;
289    if (x >= scp->xsize)
290	x = scp->xsize-1;
291    if (y >= scp->ysize)
292	y = scp->ysize-1;
293    scp->xpos = x;
294    scp->ypos = y;
295    scp->cursor_pos = scp->scr_buf + scp->ypos * scp->xsize + scp->xpos;
296}
297
298static int
299scprobe(struct isa_device *dev)
300{
301    int codeset;
302    int c = -1;
303    int m;
304
305    sc_port = dev->id_iobase;
306    sc_kbdc = kbdc_open(sc_port);
307
308    if (!kbdc_lock(sc_kbdc, TRUE)) {
309	/* driver error? */
310	printf("sc%d: unable to lock the controller.\n", dev->id_unit);
311        return ((dev->id_flags & DETECT_KBD) ? 0 : IO_KBDSIZE);
312    }
313
314    /* discard anything left after UserConfig */
315    empty_both_buffers(sc_kbdc, 10);
316
317    /* save the current keyboard controller command byte */
318    m = kbdc_get_device_mask(sc_kbdc) & ~KBD_KBD_CONTROL_BITS;
319    c = get_controller_command_byte(sc_kbdc);
320    if (c == -1) {
321	/* CONTROLLER ERROR */
322	printf("sc%d: unable to get the current command byte value.\n",
323	    dev->id_unit);
324	goto fail;
325    }
326    if (bootverbose)
327	printf("sc%d: the current keyboard controller command byte %04x\n",
328	    dev->id_unit, c);
329#if 0
330    /* override the keyboard lock switch */
331    c |= KBD_OVERRIDE_KBD_LOCK;
332#endif
333
334    /*
335     * enable the keyboard port, but disable the keyboard intr.
336     * the aux port (mouse port) is disabled too.
337     */
338    if (!set_controller_command_byte(sc_kbdc,
339            KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS,
340            KBD_ENABLE_KBD_PORT | KBD_DISABLE_KBD_INT
341                | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
342	/* CONTROLLER ERROR
343	 * there is very little we can do...
344	 */
345	printf("sc%d: unable to set the command byte.\n", dev->id_unit);
346	goto fail;
347     }
348
349     /*
350      * Check if we have an XT keyboard before we attempt to reset it.
351      * The procedure assumes that the keyboard and the controller have
352      * been set up properly by BIOS and have not been messed up
353      * during the boot process.
354      */
355     codeset = -1;
356     if (dev->id_flags & XT_KEYBD)
357	 /* the user says there is a XT keyboard */
358	 codeset = 1;
359#ifdef DETECT_XT_KEYBOARD
360     else if ((c & KBD_TRANSLATION) == 0) {
361	 /* SET_SCANCODE_SET is not always supported; ignore error */
362	 if (send_kbd_command_and_data(sc_kbdc, KBDC_SET_SCANCODE_SET, 0)
363		 == KBD_ACK)
364	     codeset = read_kbd_data(sc_kbdc);
365     }
366     if (bootverbose)
367         printf("sc%d: keyboard scancode set %d\n", dev->id_unit, codeset);
368#endif /* DETECT_XT_KEYBOARD */
369
370     /* reset keyboard hardware */
371     if (!reset_kbd(sc_kbdc)) {
372        /* KEYBOARD ERROR
373	 * Keyboard reset may fail either because the keyboard doen't exist,
374         * or because the keyboard doesn't pass the self-test, or the keyboard
375         * controller on the motherboard and the keyboard somehow fail to
376         * shake hands. It is just possible, particularly in the last case,
377         * that the keyoard controller may be left in a hung state.
378         * test_controller() and test_kbd_port() appear to bring the keyboard
379         * controller back (I don't know why and how, though.)
380	 */
381	empty_both_buffers(sc_kbdc, 10);
382	test_controller(sc_kbdc);
383	test_kbd_port(sc_kbdc);
384	/* We could disable the keyboard port and interrupt... but,
385	 * the keyboard may still exist (see above).
386	 */
387        if (bootverbose)
388	   printf("sc%d: failed to reset the keyboard.\n", dev->id_unit);
389	goto fail;
390    }
391
392    /*
393     * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
394     * such as those on the IBM ThinkPad laptop computers can be used
395     * with the standard console driver.
396     */
397    if (codeset == 1) {
398	if (send_kbd_command_and_data(
399	        sc_kbdc, KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
400	    /* XT kbd doesn't need scan code translation */
401	    c &= ~KBD_TRANSLATION;
402	} else {
403	    /* KEYBOARD ERROR
404	     * The XT kbd isn't usable unless the proper scan code set
405	     * is selected.
406	     */
407	    printf("sc%d: unable to set the XT keyboard mode.\n", dev->id_unit);
408	    goto fail;
409	}
410    }
411    /* enable the keyboard port and intr. */
412    if (!set_controller_command_byte(sc_kbdc,
413            KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS | KBD_OVERRIDE_KBD_LOCK,
414	    (c & (KBD_AUX_CONTROL_BITS | KBD_OVERRIDE_KBD_LOCK))
415	        | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
416	/* CONTROLLER ERROR
417	 * This is serious; we are left with the disabled keyboard intr.
418	 */
419	printf("sc%d: unable to enable the keyboard port and intr.\n",
420	    dev->id_unit);
421	goto fail;
422    }
423
424succeed:
425    kbdc_set_device_mask(sc_kbdc, m | KBD_KBD_CONTROL_BITS),
426    kbdc_lock(sc_kbdc, FALSE);
427    return (IO_KBDSIZE);
428
429fail:
430    if (c != -1)
431        /* try to restore the command byte as before, if possible */
432        set_controller_command_byte(sc_kbdc, 0xff, c);
433    kbdc_set_device_mask(sc_kbdc,
434        (dev->id_flags & DETECT_KBD) ? m : m | KBD_KBD_CONTROL_BITS);
435    kbdc_lock(sc_kbdc, FALSE);
436    return ((dev->id_flags & DETECT_KBD) ? 0 : IO_KBDSIZE);
437}
438
439#if NAPM > 0
440static int
441scresume(void *dummy)
442{
443	shfts = ctls = alts = agrs = metas = 0;
444	return 0;
445}
446#endif
447
448static int
449scattach(struct isa_device *dev)
450{
451    scr_stat *scp;
452    dev_t cdev = makedev(CDEV_MAJOR, 0);
453#ifdef DEVFS
454    int vc;
455#endif
456
457    scinit();
458    flags = dev->id_flags;
459
460    scp = console[0];
461
462    if (crtc_vga) {
463    	cut_buffer = (char *)malloc(scp->xsize*scp->ysize, M_DEVBUF, M_NOWAIT);
464    }
465
466    scp->scr_buf = (u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
467				     M_DEVBUF, M_NOWAIT);
468
469    /* copy temporary buffer to final buffer */
470    bcopyw(sc_buffer, scp->scr_buf, scp->xsize * scp->ysize * sizeof(u_short));
471
472    scp->cursor_pos = scp->cursor_oldpos =
473	scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
474    scp->mouse_pos = scp->mouse_oldpos =
475	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
476	    		scp->mouse_xpos/8);
477
478    /* initialize history buffer & pointers */
479    scp->history_head = scp->history_pos = scp->history =
480	(u_short *)malloc(scp->history_size*sizeof(u_short),
481			  M_DEVBUF, M_NOWAIT);
482    bzero(scp->history_head, scp->history_size*sizeof(u_short));
483
484    /* initialize cursor stuff */
485    if (!(scp->status & UNKNOWN_MODE)) {
486    	draw_cursor_image(scp);
487    	if (crtc_vga && (flags & CHAR_CURSOR))
488	    set_destructive_cursor(scp);
489    }
490
491    /* get screen update going */
492    scrn_timer();
493
494    update_leds(scp->status);
495
496    printf("sc%d: ", dev->id_unit);
497    if (crtc_vga)
498	if (crtc_addr == MONO_BASE)
499	    printf("VGA mono");
500	else
501	    printf("VGA color");
502    else
503	if (crtc_addr == MONO_BASE)
504	    printf("MDA/hercules");
505	else
506	    printf("CGA/EGA");
507    printf(" <%d virtual consoles, flags=0x%x>\n", MAXCONS, flags);
508
509#if NAPM > 0
510    scp->r_hook.ah_fun = scresume;
511    scp->r_hook.ah_arg = NULL;
512    scp->r_hook.ah_name = "system keyboard";
513    scp->r_hook.ah_order = APM_MID_ORDER;
514    apm_hook_establish(APM_HOOK_RESUME , &scp->r_hook);
515#endif
516
517    cdevsw_add(&cdev, &scdevsw, NULL);
518
519#ifdef DEVFS
520    for (vc = 0; vc < MAXCONS; vc++)
521        sc_devfs_token[vc] = devfs_add_devswf(&scdevsw, vc, DV_CHR, UID_ROOT,
522					      GID_WHEEL, 0600, "ttyv%n", vc);
523#endif
524    return 0;
525}
526
527struct tty
528*scdevtotty(dev_t dev)
529{
530    int unit = minor(dev);
531
532    if (init_done == COLD)
533	return(NULL);
534    if (unit == SC_CONSOLE)
535	return CONSOLE_TTY;
536    if (unit == SC_MOUSE)
537	return MOUSE_TTY;
538    if (unit >= MAXCONS || unit < 0)
539	return(NULL);
540    return VIRTUAL_TTY(unit);
541}
542
543int
544scopen(dev_t dev, int flag, int mode, struct proc *p)
545{
546    struct tty *tp = scdevtotty(dev);
547
548    if (!tp)
549	return(ENXIO);
550
551    tp->t_oproc = (minor(dev) == SC_MOUSE) ? scmousestart : scstart;
552    tp->t_param = scparam;
553    tp->t_dev = dev;
554    if (!(tp->t_state & TS_ISOPEN)) {
555	ttychars(tp);
556	tp->t_iflag = TTYDEF_IFLAG;
557	tp->t_oflag = TTYDEF_OFLAG;
558	tp->t_cflag = TTYDEF_CFLAG;
559	tp->t_lflag = TTYDEF_LFLAG;
560	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
561	scparam(tp, &tp->t_termios);
562	ttsetwater(tp);
563	(*linesw[tp->t_line].l_modem)(tp, 1);
564    }
565    else
566	if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
567	    return(EBUSY);
568    if (minor(dev) < MAXCONS && !console[minor(dev)]) {
569	console[minor(dev)] = alloc_scp();
570    }
571    if (minor(dev)<MAXCONS && !tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
572	tp->t_winsize.ws_col = console[minor(dev)]->xsize;
573	tp->t_winsize.ws_row = console[minor(dev)]->ysize;
574    }
575    return ((*linesw[tp->t_line].l_open)(dev, tp));
576}
577
578int
579scclose(dev_t dev, int flag, int mode, struct proc *p)
580{
581    struct tty *tp = scdevtotty(dev);
582    struct scr_stat *scp;
583
584    if (!tp)
585	return(ENXIO);
586    if (minor(dev) < MAXCONS) {
587	scp = get_scr_stat(tp->t_dev);
588	if (scp->status & SWITCH_WAIT_ACQ)
589	    wakeup((caddr_t)&scp->smode);
590#if not_yet_done
591	if (scp == &main_console) {
592	    scp->pid = 0;
593	    scp->proc = NULL;
594	    scp->smode.mode = VT_AUTO;
595	}
596	else {
597	    free(scp->scr_buf, M_DEVBUF);
598	    free(scp->history, M_DEVBUF);
599	    free(scp, M_DEVBUF);
600	    console[minor(dev)] = NULL;
601	}
602#else
603	scp->pid = 0;
604	scp->proc = NULL;
605	scp->smode.mode = VT_AUTO;
606#endif
607    }
608    spltty();
609    (*linesw[tp->t_line].l_close)(tp, flag);
610    ttyclose(tp);
611    spl0();
612    return(0);
613}
614
615int
616scread(dev_t dev, struct uio *uio, int flag)
617{
618    struct tty *tp = scdevtotty(dev);
619
620    if (!tp)
621	return(ENXIO);
622    return((*linesw[tp->t_line].l_read)(tp, uio, flag));
623}
624
625int
626scwrite(dev_t dev, struct uio *uio, int flag)
627{
628    struct tty *tp = scdevtotty(dev);
629
630    if (!tp)
631	return(ENXIO);
632    return((*linesw[tp->t_line].l_write)(tp, uio, flag));
633}
634
635void
636scintr(int unit)
637{
638    static struct tty *cur_tty;
639    int c, len;
640    u_char *cp;
641
642    /* make screensaver happy */
643    scrn_time_stamp = time.tv_sec;
644    if (scrn_blanked) {
645	(*current_saver)(FALSE);
646	mark_all(cur_console);
647    }
648
649    /*
650     * Loop while there is still input to get from the keyboard.
651     * I don't think this is nessesary, and it doesn't fix
652     * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
653     */
654    while ((c = scgetc(SCGETC_NONBLOCK)) != NOKEY) {
655
656	cur_tty = VIRTUAL_TTY(get_scr_num());
657	if (!(cur_tty->t_state & TS_ISOPEN))
658	    if (!((cur_tty = CONSOLE_TTY)->t_state & TS_ISOPEN))
659		continue;
660
661	switch (c & 0xff00) {
662	case 0x0000: /* normal key */
663	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
664	    break;
665	case FKEY:  /* function key, return string */
666	    if (cp = get_fstr((u_int)c, (u_int *)&len)) {
667	    	while (len-- >  0)
668		    (*linesw[cur_tty->t_line].l_rint)(*cp++ & 0xFF, cur_tty);
669	    }
670	    break;
671	case MKEY:  /* meta is active, prepend ESC */
672	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
673	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
674	    break;
675	case BKEY:  /* backtab fixed sequence (esc [ Z) */
676	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
677	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
678	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
679	    break;
680	}
681    }
682
683    if (cur_console->status & MOUSE_ENABLED) {
684	cur_console->status &= ~MOUSE_VISIBLE;
685	remove_mouse_image(cur_console);
686    }
687}
688
689static int
690scparam(struct tty *tp, struct termios *t)
691{
692    tp->t_ispeed = t->c_ispeed;
693    tp->t_ospeed = t->c_ospeed;
694    tp->t_cflag = t->c_cflag;
695    return 0;
696}
697
698int
699scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
700{
701    int error;
702    u_int i;
703    struct tty *tp;
704    struct trapframe *fp;
705    scr_stat *scp;
706
707    tp = scdevtotty(dev);
708    if (!tp)
709	return ENXIO;
710    scp = get_scr_stat(tp->t_dev);
711
712    /* If there is a user_ioctl function call that first */
713    if (sc_user_ioctl) {
714	if (error = (*sc_user_ioctl)(dev, cmd, data, flag, p))
715	    return error;
716    }
717
718    switch (cmd) {  		/* process console hardware related ioctl's */
719
720    case GIO_ATTR:      	/* get current attributes */
721	*(int*)data = (scp->term.cur_attr >> 8) & 0xFF;
722	return 0;
723
724    case GIO_COLOR:     	/* is this a color console ? */
725	if (crtc_addr == COLOR_BASE)
726	    *(int*)data = 1;
727	else
728	    *(int*)data = 0;
729	return 0;
730
731    case CONS_CURRENT:  	/* get current adapter type */
732	if (crtc_vga)
733	    *(int*)data = KD_VGA;
734	else
735	    if (crtc_addr == MONO_BASE)
736		*(int*)data = KD_MONO;
737	    else
738		*(int*)data = KD_CGA;
739	return 0;
740
741    case CONS_GET:      	/* get current video mode */
742	*(int*)data = scp->mode;
743	return 0;
744
745    case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
746	scrn_blank_time = *(int*)data;
747	return 0;
748
749    case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
750	if ((*(int*)data) & 0x01)
751	    flags |= BLINK_CURSOR;
752	else
753	    flags &= ~BLINK_CURSOR;
754	if ((*(int*)data) & 0x02) {
755	    if (!crtc_vga)
756		return ENXIO;
757	    flags |= CHAR_CURSOR;
758	    set_destructive_cursor(scp);
759	} else
760	    flags &= ~CHAR_CURSOR;
761	return 0;
762
763    case CONS_BELLTYPE: 	/* set bell type sound/visual */
764	if (*data)
765	    flags |= VISUAL_BELL;
766	else
767	    flags &= ~VISUAL_BELL;
768	return 0;
769
770    case CONS_HISTORY:  	/* set history size */
771	if (*data) {
772	    free(scp->history, M_DEVBUF);
773	    scp->history_size = *(int*)data;
774	    if (scp->history_size < scp->ysize)
775		scp->history = NULL;
776	    else {
777		scp->history_size *= scp->xsize;
778		scp->history_head = scp->history_pos = scp->history =
779		    (u_short *)malloc(scp->history_size*sizeof(u_short),
780				      M_DEVBUF, M_WAITOK);
781		bzero(scp->history_head, scp->history_size*sizeof(u_short));
782	    }
783	    return 0;
784	}
785	else
786	    return EINVAL;
787
788    case CONS_MOUSECTL:		/* control mouse arrow */
789    {
790	mouse_info_t *mouse = (mouse_info_t*)data;
791
792	if (!crtc_vga)
793	    return ENXIO;
794
795	switch (mouse->operation) {
796	case MOUSE_MODE:
797	    if (mouse->u.mode.signal > 0 && mouse->u.mode.signal < NSIG) {
798		scp->mouse_signal = mouse->u.mode.signal;
799		scp->mouse_proc = p;
800		scp->mouse_pid = p->p_pid;
801	    }
802	    else {
803		scp->mouse_signal = 0;
804		scp->mouse_proc = NULL;
805		scp->mouse_pid = 0;
806	    }
807	    break;
808
809	case MOUSE_SHOW:
810	    if (!(scp->status & MOUSE_ENABLED)) {
811		scp->status |= (MOUSE_ENABLED | MOUSE_VISIBLE);
812		scp->mouse_oldpos = scp->mouse_pos;
813		mark_all(scp);
814	    }
815	    else
816		return EINVAL;
817	    break;
818
819	case MOUSE_HIDE:
820	    if (scp->status & MOUSE_ENABLED) {
821		scp->status &= ~(MOUSE_ENABLED | MOUSE_VISIBLE);
822		mark_all(scp);
823	    }
824	    else
825		return EINVAL;
826	    break;
827
828	case MOUSE_MOVEABS:
829	    scp->mouse_xpos = mouse->u.data.x;
830	    scp->mouse_ypos = mouse->u.data.y;
831	    set_mouse_pos(scp);
832	    break;
833
834	case MOUSE_MOVEREL:
835	    scp->mouse_xpos += mouse->u.data.x;
836	    scp->mouse_ypos += mouse->u.data.y;
837	    set_mouse_pos(scp);
838	    break;
839
840	case MOUSE_GETINFO:
841	    mouse->u.data.x = scp->mouse_xpos;
842	    mouse->u.data.y = scp->mouse_ypos;
843	    mouse->u.data.buttons = scp->mouse_buttons;
844	    break;
845
846	case MOUSE_ACTION:
847	    /* this should maybe only be settable from /dev/consolectl SOS */
848	    /* send out mouse event on /dev/sysmouse */
849	    if (cur_console->status & MOUSE_ENABLED)
850	    	cur_console->status |= MOUSE_VISIBLE;
851	    if ((MOUSE_TTY)->t_state & TS_ISOPEN) {
852		u_char buf[5];
853		int i;
854
855		buf[0] = 0x80 | ((~mouse->u.data.buttons) & 0x07);
856		buf[1] = (mouse->u.data.x & 0x1fe >> 1);
857		buf[3] = (mouse->u.data.x & 0x1ff) - buf[1];
858		buf[2] = -(mouse->u.data.y & 0x1fe >> 1);
859		buf[4] = -(mouse->u.data.y & 0x1ff) - buf[2];
860		for (i=0; i<5; i++)
861	    		(*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[i],MOUSE_TTY);
862	    }
863	    cur_console->mouse_xpos += mouse->u.data.x;
864	    cur_console->mouse_ypos += mouse->u.data.y;
865	    if (cur_console->mouse_signal) {
866		cur_console->mouse_buttons = mouse->u.data.buttons;
867    		/* has controlling process died? */
868		if (cur_console->mouse_proc &&
869		    (cur_console->mouse_proc != pfind(cur_console->mouse_pid))){
870		    	cur_console->mouse_signal = 0;
871			cur_console->mouse_proc = NULL;
872			cur_console->mouse_pid = 0;
873		}
874		else
875		    psignal(cur_console->mouse_proc, cur_console->mouse_signal);
876	    }
877	    else {
878		/* process button presses */
879		if (cur_console->mouse_buttons != mouse->u.data.buttons) {
880		    cur_console->mouse_buttons = mouse->u.data.buttons;
881		    if (!(cur_console->status & UNKNOWN_MODE)) {
882			if (cur_console->mouse_buttons & LEFT_BUTTON)
883			    mouse_cut_start(cur_console);
884			else
885			    mouse_cut_end(cur_console);
886			if (cur_console->mouse_buttons & RIGHT_BUTTON ||
887			    cur_console->mouse_buttons & MIDDLE_BUTTON)
888			    mouse_paste(cur_console);
889		    }
890		}
891	    }
892	    if (mouse->u.data.x != 0 || mouse->u.data.y != 0)
893		set_mouse_pos(cur_console);
894	    break;
895
896	default:
897	    return EINVAL;
898	}
899	/* make screensaver happy */
900	if (scp == cur_console) {
901	    scrn_time_stamp = time.tv_sec;
902	    if (scrn_blanked) {
903		(*current_saver)(FALSE);
904		mark_all(scp);
905	    }
906	}
907	return 0;
908    }
909
910    case CONS_GETINFO:  	/* get current (virtual) console info */
911    {
912	vid_info_t *ptr = (vid_info_t*)data;
913	if (ptr->size == sizeof(struct vid_info)) {
914	    ptr->m_num = get_scr_num();
915	    ptr->mv_col = scp->xpos;
916	    ptr->mv_row = scp->ypos;
917	    ptr->mv_csz = scp->xsize;
918	    ptr->mv_rsz = scp->ysize;
919	    ptr->mv_norm.fore = (scp->term.std_color & 0x0f00)>>8;
920	    ptr->mv_norm.back = (scp->term.std_color & 0xf000)>>12;
921	    ptr->mv_rev.fore = (scp->term.rev_color & 0x0f00)>>8;
922	    ptr->mv_rev.back = (scp->term.rev_color & 0xf000)>>12;
923	    ptr->mv_grfc.fore = 0;      /* not supported */
924	    ptr->mv_grfc.back = 0;      /* not supported */
925	    ptr->mv_ovscan = scp->border;
926	    ptr->mk_keylock = scp->status & LOCK_KEY_MASK;
927	    return 0;
928	}
929	return EINVAL;
930    }
931
932    case CONS_GETVERS:  	/* get version number */
933	*(int*)data = 0x200;    /* version 2.0 */
934	return 0;
935
936    /* VGA TEXT MODES */
937    case SW_VGA_C40x25:
938    case SW_VGA_C80x25: case SW_VGA_M80x25:
939    case SW_VGA_C80x30: case SW_VGA_M80x30:
940    case SW_VGA_C80x50: case SW_VGA_M80x50:
941    case SW_VGA_C80x60: case SW_VGA_M80x60:
942    case SW_B40x25:     case SW_C40x25:
943    case SW_B80x25:     case SW_C80x25:
944    case SW_ENH_B40x25: case SW_ENH_C40x25:
945    case SW_ENH_B80x25: case SW_ENH_C80x25:
946    case SW_ENH_B80x43: case SW_ENH_C80x43:
947
948	if (!crtc_vga || video_mode_ptr == NULL)
949	    return ENXIO;
950	switch (cmd & 0xff) {
951	case M_VGA_C80x60: case M_VGA_M80x60:
952	    if (!(fonts_loaded & FONT_8))
953		return EINVAL;
954	    scp->xsize = 80;
955	    scp->ysize = 60;
956	    break;
957	case M_VGA_C80x50: case M_VGA_M80x50:
958	    if (!(fonts_loaded & FONT_8))
959		return EINVAL;
960	    scp->xsize = 80;
961	    scp->ysize = 50;
962	    break;
963	case M_ENH_B80x43: case M_ENH_C80x43:
964	    if (!(fonts_loaded & FONT_8))
965		return EINVAL;
966	    scp->xsize = 80;
967	    scp->ysize = 43;
968	    break;
969	case M_VGA_C80x30: case M_VGA_M80x30:
970	    scp->xsize = 80;
971	    scp->ysize = 30;
972	    break;
973	default:
974	    if ((cmd & 0xff) > M_VGA_CG320)
975		return EINVAL;
976	    else
977		scp->xsize = *(video_mode_ptr+((cmd&0xff)*64));
978		scp->ysize = *(video_mode_ptr+((cmd&0xff)*64)+1)+1;
979	    break;
980	}
981	scp->mode = cmd & 0xff;
982	free(scp->scr_buf, M_DEVBUF);
983	scp->scr_buf = (u_short *)
984	    malloc(scp->xsize*scp->ysize*sizeof(u_short), M_DEVBUF, M_WAITOK);
985    	scp->cursor_pos = scp->cursor_oldpos =
986	    scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
987    	scp->mouse_pos = scp->mouse_oldpos =
988	    scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
989	    scp->mouse_xpos/8);
990	free(cut_buffer, M_DEVBUF);
991    	cut_buffer = (char *)malloc(scp->xsize*scp->ysize, M_DEVBUF, M_NOWAIT);
992	cut_buffer[0] = 0x00;
993	if (scp == cur_console)
994	    set_mode(scp);
995	scp->status &= ~UNKNOWN_MODE;
996	clear_screen(scp);
997	if (tp->t_winsize.ws_col != scp->xsize
998	    || tp->t_winsize.ws_row != scp->ysize) {
999	    tp->t_winsize.ws_col = scp->xsize;
1000	    tp->t_winsize.ws_row = scp->ysize;
1001	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1002	}
1003	return 0;
1004
1005    /* GRAPHICS MODES */
1006    case SW_BG320:     case SW_BG640:
1007    case SW_CG320:     case SW_CG320_D:   case SW_CG640_E:
1008    case SW_CG640x350: case SW_ENH_CG640:
1009    case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
1010
1011	if (!crtc_vga || video_mode_ptr == NULL)
1012	    return ENXIO;
1013	scp->mode = cmd & 0xFF;
1014	scp->xpixel = (*(video_mode_ptr + (scp->mode*64))) * 8;
1015	scp->ypixel = (*(video_mode_ptr + (scp->mode*64) + 1) + 1) *
1016		     (*(video_mode_ptr + (scp->mode*64) + 2));
1017	if (scp == cur_console)
1018	    set_mode(scp);
1019	scp->status |= UNKNOWN_MODE;    /* graphics mode */
1020	/* clear_graphics();*/
1021
1022	if (tp->t_winsize.ws_xpixel != scp->xpixel
1023	    || tp->t_winsize.ws_ypixel != scp->ypixel) {
1024	    tp->t_winsize.ws_xpixel = scp->xpixel;
1025	    tp->t_winsize.ws_ypixel = scp->ypixel;
1026	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1027	}
1028	return 0;
1029
1030    case VT_SETMODE:    	/* set screen switcher mode */
1031	bcopy(data, &scp->smode, sizeof(struct vt_mode));
1032	if (scp->smode.mode == VT_PROCESS) {
1033	    scp->proc = p;
1034	    scp->pid = scp->proc->p_pid;
1035	}
1036	return 0;
1037
1038    case VT_GETMODE:    	/* get screen switcher mode */
1039	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1040	return 0;
1041
1042    case VT_RELDISP:    	/* screen switcher ioctl */
1043	switch(*data) {
1044	case VT_FALSE:  	/* user refuses to release screen, abort */
1045	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1046		old_scp->status &= ~SWITCH_WAIT_REL;
1047		switch_in_progress = FALSE;
1048		return 0;
1049	    }
1050	    return EINVAL;
1051
1052	case VT_TRUE:   	/* user has released screen, go on */
1053	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1054		scp->status &= ~SWITCH_WAIT_REL;
1055		exchange_scr();
1056		if (new_scp->smode.mode == VT_PROCESS) {
1057		    new_scp->status |= SWITCH_WAIT_ACQ;
1058		    psignal(new_scp->proc, new_scp->smode.acqsig);
1059		}
1060		else
1061		    switch_in_progress = FALSE;
1062		return 0;
1063	    }
1064	    return EINVAL;
1065
1066	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1067	    if (scp == new_scp && (scp->status & SWITCH_WAIT_ACQ)) {
1068		scp->status &= ~SWITCH_WAIT_ACQ;
1069		switch_in_progress = FALSE;
1070		return 0;
1071	    }
1072	    return EINVAL;
1073
1074	default:
1075	    return EINVAL;
1076	}
1077	/* NOT REACHED */
1078
1079    case VT_OPENQRY:    	/* return free virtual console */
1080	for (i = 0; i < MAXCONS; i++) {
1081	    tp = VIRTUAL_TTY(i);
1082	    if (!(tp->t_state & TS_ISOPEN)) {
1083		*data = i + 1;
1084		return 0;
1085	    }
1086	}
1087	return EINVAL;
1088
1089    case VT_ACTIVATE:   	/* switch to screen *data */
1090	return switch_scr(scp, (*data) - 1);
1091
1092    case VT_WAITACTIVE: 	/* wait for switch to occur */
1093	if (*data > MAXCONS || *data < 0)
1094	    return EINVAL;
1095	if (minor(dev) == (*data) - 1)
1096	    return 0;
1097	if (*data == 0) {
1098	    if (scp == cur_console)
1099		return 0;
1100	}
1101	else
1102	    scp = console[(*data) - 1];
1103	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
1104			     "waitvt", 0)) == ERESTART) ;
1105	return error;
1106
1107    case VT_GETACTIVE:
1108	*data = get_scr_num()+1;
1109	return 0;
1110
1111    case KDENABIO:      	/* allow io operations */
1112	error = suser(p->p_ucred, &p->p_acflag);
1113	if (error != 0)
1114	    return error;
1115	if (securelevel > 0)
1116	    return EPERM;
1117	fp = (struct trapframe *)p->p_md.md_regs;
1118	fp->tf_eflags |= PSL_IOPL;
1119	return 0;
1120
1121    case KDDISABIO:     	/* disallow io operations (default) */
1122	fp = (struct trapframe *)p->p_md.md_regs;
1123	fp->tf_eflags &= ~PSL_IOPL;
1124	return 0;
1125
1126    case KDSETMODE:     	/* set current mode of this (virtual) console */
1127	switch (*data) {
1128	case KD_TEXT:   	/* switch to TEXT (known) mode */
1129	    /* restore fonts & palette ! */
1130	    if (crtc_vga) {
1131		if (fonts_loaded & FONT_8)
1132		    copy_font(LOAD, FONT_8, font_8);
1133		if (fonts_loaded & FONT_14)
1134		    copy_font(LOAD, FONT_14, font_14);
1135		if (fonts_loaded & FONT_16)
1136		    copy_font(LOAD, FONT_16, font_16);
1137		if (flags & CHAR_CURSOR)
1138		    set_destructive_cursor(scp);
1139		load_palette(palette);
1140	    }
1141	    /* FALL THROUGH */
1142
1143	case KD_TEXT1:  	/* switch to TEXT (known) mode */
1144	    /* no restore fonts & palette */
1145	    if (crtc_vga && video_mode_ptr)
1146		set_mode(scp);
1147	    scp->status &= ~UNKNOWN_MODE;
1148	    clear_screen(scp);
1149	    return 0;
1150
1151	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
1152	    scp->status |= UNKNOWN_MODE;
1153	    return 0;
1154	default:
1155	    return EINVAL;
1156	}
1157	/* NOT REACHED */
1158
1159    case KDGETMODE:     	/* get current mode of this (virtual) console */
1160	*data = (scp->status & UNKNOWN_MODE) ? KD_GRAPHICS : KD_TEXT;
1161	return 0;
1162
1163    case KDSBORDER:     	/* set border color of this (virtual) console */
1164	if (!crtc_vga)
1165	    return ENXIO;
1166	scp->border = *data;
1167	if (scp == cur_console)
1168	    set_border(scp->border);
1169	return 0;
1170
1171    case KDSKBSTATE:    	/* set keyboard state (locks) */
1172	if (*data >= 0 && *data <= LOCK_KEY_MASK) {
1173	    scp->status &= ~LOCK_KEY_MASK;
1174	    scp->status |= *data;
1175	    if (scp == cur_console)
1176		update_leds(scp->status);
1177	    return 0;
1178	}
1179	return EINVAL;
1180
1181    case KDGKBSTATE:    	/* get keyboard state (locks) */
1182	*data = scp->status & LOCK_KEY_MASK;
1183	return 0;
1184
1185    case KDSETRAD:      	/* set keyboard repeat & delay rates */
1186	if (*data & 0x80)
1187	    return EINVAL;
1188	if (sc_kbdc != NULL)
1189	    set_keyboard(KBDC_SET_TYPEMATIC, *data);
1190	return 0;
1191
1192    case KDSKBMODE:     	/* set keyboard mode */
1193	switch (*data) {
1194	case K_RAW: 		/* switch to RAW scancode mode */
1195	    scp->status |= KBD_RAW_MODE;
1196	    return 0;
1197
1198	case K_XLATE:   	/* switch to XLT ascii mode */
1199	    if (scp == cur_console && scp->status & KBD_RAW_MODE)
1200		shfts = ctls = alts = agrs = metas = 0;
1201	    scp->status &= ~KBD_RAW_MODE;
1202	    return 0;
1203	default:
1204	    return EINVAL;
1205	}
1206	/* NOT REACHED */
1207
1208    case KDGKBMODE:     	/* get keyboard mode */
1209	*data = (scp->status & KBD_RAW_MODE) ? K_RAW : K_XLATE;
1210	return 0;
1211
1212    case KDMKTONE:      	/* sound the bell */
1213	if (*(int*)data)
1214	    do_bell(scp, (*(int*)data)&0xffff,
1215		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1216	else
1217	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
1218	return 0;
1219
1220    case KIOCSOUND:     	/* make tone (*data) hz */
1221	if (scp == cur_console) {
1222	    if (*(int*)data) {
1223		int pitch = timer_freq / *(int*)data;
1224
1225		/* set command for counter 2, 2 byte write */
1226		if (acquire_timer2(TIMER_16BIT|TIMER_SQWAVE))
1227		    return EBUSY;
1228
1229		/* set pitch */
1230		outb(TIMER_CNTR2, pitch);
1231		outb(TIMER_CNTR2, (pitch>>8));
1232
1233		/* enable counter 2 output to speaker */
1234		outb(IO_PPI, inb(IO_PPI) | 3);
1235	    }
1236	    else {
1237		/* disable counter 2 output to speaker */
1238		outb(IO_PPI, inb(IO_PPI) & 0xFC);
1239		release_timer2();
1240	    }
1241	}
1242	return 0;
1243
1244    case KDGKBTYPE:     	/* get keyboard type */
1245	*data = 0;  		/* type not known (yet) */
1246	return 0;
1247
1248    case KDSETLED:      	/* set keyboard LED status */
1249	if (*data >= 0 && *data <= LED_MASK) {
1250	    scp->status &= ~LED_MASK;
1251	    scp->status |= *data;
1252	    if (scp == cur_console)
1253		update_leds(scp->status);
1254	    return 0;
1255	}
1256	return EINVAL;
1257
1258    case KDGETLED:      	/* get keyboard LED status */
1259	*data = scp->status & LED_MASK;
1260	return 0;
1261
1262    case GETFKEY:       	/* get functionkey string */
1263	if (*(u_short*)data < n_fkey_tab) {
1264	    fkeyarg_t *ptr = (fkeyarg_t*)data;
1265	    bcopy(&fkey_tab[ptr->keynum].str, ptr->keydef,
1266		  fkey_tab[ptr->keynum].len);
1267	    ptr->flen = fkey_tab[ptr->keynum].len;
1268	    return 0;
1269	}
1270	else
1271	    return EINVAL;
1272
1273    case SETFKEY:       	/* set functionkey string */
1274	if (*(u_short*)data < n_fkey_tab) {
1275	    fkeyarg_t *ptr = (fkeyarg_t*)data;
1276	    bcopy(ptr->keydef, &fkey_tab[ptr->keynum].str,
1277		  min(ptr->flen, MAXFK));
1278	    fkey_tab[ptr->keynum].len = min(ptr->flen, MAXFK);
1279	    return 0;
1280	}
1281	else
1282	    return EINVAL;
1283
1284    case GIO_SCRNMAP:   	/* get output translation table */
1285	bcopy(&scr_map, data, sizeof(scr_map));
1286	return 0;
1287
1288    case PIO_SCRNMAP:   	/* set output translation table */
1289	bcopy(data, &scr_map, sizeof(scr_map));
1290	for (i=0; i<sizeof(scr_map); i++)
1291	    scr_rmap[scr_map[i]] = i;
1292	return 0;
1293
1294    case GIO_KEYMAP:    	/* get keyboard translation table */
1295	bcopy(&key_map, data, sizeof(key_map));
1296	return 0;
1297
1298    case PIO_KEYMAP:    	/* set keyboard translation table */
1299	bcopy(data, &key_map, sizeof(key_map));
1300	return 0;
1301
1302    case PIO_FONT8x8:   	/* set 8x8 dot font */
1303	if (!crtc_vga)
1304	    return ENXIO;
1305	bcopy(data, font_8, 8*256);
1306	fonts_loaded |= FONT_8;
1307	copy_font(LOAD, FONT_8, font_8);
1308	if (flags & CHAR_CURSOR)
1309	    set_destructive_cursor(scp);
1310	return 0;
1311
1312    case GIO_FONT8x8:   	/* get 8x8 dot font */
1313	if (!crtc_vga)
1314	    return ENXIO;
1315	if (fonts_loaded & FONT_8) {
1316	    bcopy(font_8, data, 8*256);
1317	    return 0;
1318	}
1319	else
1320	    return ENXIO;
1321
1322    case PIO_FONT8x14:  	/* set 8x14 dot font */
1323	if (!crtc_vga)
1324	    return ENXIO;
1325	bcopy(data, font_14, 14*256);
1326	fonts_loaded |= FONT_14;
1327	copy_font(LOAD, FONT_14, font_14);
1328	if (flags & CHAR_CURSOR)
1329	    set_destructive_cursor(scp);
1330	return 0;
1331
1332    case GIO_FONT8x14:  	/* get 8x14 dot font */
1333	if (!crtc_vga)
1334	    return ENXIO;
1335	if (fonts_loaded & FONT_14) {
1336	    bcopy(font_14, data, 14*256);
1337	    return 0;
1338	}
1339	else
1340	    return ENXIO;
1341
1342    case PIO_FONT8x16:  	/* set 8x16 dot font */
1343	if (!crtc_vga)
1344	    return ENXIO;
1345	bcopy(data, font_16, 16*256);
1346	fonts_loaded |= FONT_16;
1347	copy_font(LOAD, FONT_16, font_16);
1348	if (flags & CHAR_CURSOR)
1349	    set_destructive_cursor(scp);
1350	return 0;
1351
1352    case GIO_FONT8x16:  	/* get 8x16 dot font */
1353	if (!crtc_vga)
1354	    return ENXIO;
1355	if (fonts_loaded & FONT_16) {
1356	    bcopy(font_16, data, 16*256);
1357	    return 0;
1358	}
1359	else
1360	    return ENXIO;
1361    default:
1362	break;
1363    }
1364
1365    error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
1366    if (error >= 0)
1367	return(error);
1368    error = ttioctl(tp, cmd, data, flag);
1369    if (error >= 0)
1370	return(error);
1371    return(ENOTTY);
1372}
1373
1374static void
1375scstart(struct tty *tp)
1376{
1377    struct clist *rbp;
1378    int s, len;
1379    u_char buf[PCBURST];
1380    scr_stat *scp = get_scr_stat(tp->t_dev);
1381
1382    if (scp->status & SLKED || blink_in_progress)
1383	return; /* XXX who repeats the call when the above flags are cleared? */
1384    s = spltty();
1385    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1386	tp->t_state |= TS_BUSY;
1387	rbp = &tp->t_outq;
1388	while (rbp->c_cc) {
1389	    len = q_to_b(rbp, buf, PCBURST);
1390	    splx(s);
1391	    ansi_put(scp, buf, len);
1392	    s = spltty();
1393	}
1394	tp->t_state &= ~TS_BUSY;
1395	ttwwakeup(tp);
1396    }
1397    splx(s);
1398}
1399
1400static void
1401scmousestart(struct tty *tp)
1402{
1403    struct clist *rbp;
1404    int s;
1405    u_char buf[PCBURST];
1406
1407    s = spltty();
1408    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1409	tp->t_state |= TS_BUSY;
1410	rbp = &tp->t_outq;
1411	while (rbp->c_cc) {
1412	    q_to_b(rbp, buf, PCBURST);
1413	}
1414	tp->t_state &= ~TS_BUSY;
1415	ttwwakeup(tp);
1416    }
1417    splx(s);
1418}
1419
1420void
1421sccnprobe(struct consdev *cp)
1422{
1423    struct isa_device *dvp;
1424
1425    /*
1426     * Take control if we are the highest priority enabled display device.
1427     */
1428    dvp = find_display();
1429    if (dvp == NULL || dvp->id_driver != &scdriver) {
1430	cp->cn_pri = CN_DEAD;
1431	return;
1432    }
1433
1434    /* initialize required fields */
1435    cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLE);
1436    cp->cn_pri = CN_INTERNAL;
1437
1438    sc_kbdc = kbdc_open(sc_port);
1439}
1440
1441void
1442sccninit(struct consdev *cp)
1443{
1444    scinit();
1445}
1446
1447void
1448sccnputc(dev_t dev, int c)
1449{
1450    u_char buf[1];
1451    int s;
1452    scr_stat *scp = console[0];
1453    term_stat save = scp->term;
1454
1455    scp->term = kernel_console;
1456    current_default = &kernel_default;
1457    if (scp == cur_console && !(scp->status & UNKNOWN_MODE))
1458	remove_cursor_image(scp);
1459    buf[0] = c;
1460    ansi_put(scp, buf, 1);
1461    kernel_console = scp->term;
1462    current_default = &user_default;
1463    scp->term = save;
1464    s = splclock();
1465    if (scp == cur_console && !(scp->status & UNKNOWN_MODE)) {
1466	if (/* timer not running && */ (scp->start <= scp->end)) {
1467	    bcopyw(scp->scr_buf + scp->start, Crtat + scp->start,
1468		   (1 + scp->end - scp->start) * sizeof(u_short));
1469	    scp->start = scp->xsize * scp->ysize;
1470	    scp->end = 0;
1471	}
1472    	scp->cursor_oldpos = scp->cursor_pos;
1473	draw_cursor_image(scp);
1474    }
1475    splx(s);
1476}
1477
1478int
1479sccngetc(dev_t dev)
1480{
1481    int s = spltty();       /* block scintr while we poll */
1482    int c = scgetc(SCGETC_CN);
1483    splx(s);
1484    return(c);
1485}
1486
1487int
1488sccncheckc(dev_t dev)
1489{
1490    int c, s;
1491
1492    s = spltty();
1493    c = scgetc(SCGETC_CN | SCGETC_NONBLOCK);
1494    splx(s);
1495    return(c == NOKEY ? -1 : c);	/* c == -1 can't happen */
1496}
1497
1498static scr_stat
1499*get_scr_stat(dev_t dev)
1500{
1501    int unit = minor(dev);
1502
1503    if (unit == SC_CONSOLE)
1504	return console[0];
1505    if (unit >= MAXCONS || unit < 0)
1506	return(NULL);
1507    return console[unit];
1508}
1509
1510static int
1511get_scr_num()
1512{
1513    int i = 0;
1514
1515    while ((i < MAXCONS) && (cur_console != console[i]))
1516	i++;
1517    return i < MAXCONS ? i : 0;
1518}
1519
1520static void
1521scrn_timer()
1522{
1523    scr_stat *scp = cur_console;
1524    int s = spltty();
1525
1526    /*
1527     * With release 2.1 of the Xaccel server, the keyboard is left
1528     * hanging pretty often. Apparently an interrupt from the
1529     * keyboard is lost, and I don't know why (yet).
1530     * This ugly hack calls scintr if input is ready for the keyboard
1531     * and conveniently hides the problem.			XXX
1532     */
1533    /* Try removing anything stuck in the keyboard controller; whether
1534     * it's a keyboard scan code or mouse data. `scintr()' doesn't
1535     * read the mouse data directly, but `kbdio' routines will, as a
1536     * side effect.
1537     */
1538    if (kbdc_lock(sc_kbdc, TRUE)) {
1539	/*
1540	 * We have seen the lock flag is not set. Let's reset the flag early;
1541	 * otherwise `update_led()' failes which may want the lock
1542	 * during `scintr()'.
1543	 */
1544	kbdc_lock(sc_kbdc, FALSE);
1545	if (kbdc_data_ready(sc_kbdc))
1546	    scintr(0);
1547    }
1548
1549    /* should we just return ? */
1550    if ((scp->status&UNKNOWN_MODE) || blink_in_progress || switch_in_progress) {
1551	timeout((timeout_func_t)scrn_timer, 0, hz/10);
1552	splx(s);
1553	return;
1554    }
1555
1556    if (!scrn_blanked) {
1557	/* update screen image */
1558	if (scp->start <= scp->end) {
1559	    bcopyw(scp->scr_buf + scp->start, Crtat + scp->start,
1560		   (1 + scp->end - scp->start) * sizeof(u_short));
1561	}
1562
1563	/* update "pseudo" mouse pointer image */
1564	if ((scp->status & MOUSE_VISIBLE) && crtc_vga) {
1565	    /* did mouse move since last time ? */
1566	    if (scp->status & MOUSE_MOVED) {
1567		/* do we need to remove old mouse pointer image ? */
1568		if (scp->mouse_cut_start != NULL ||
1569		    (scp->mouse_pos-scp->scr_buf) <= scp->start ||
1570		    (scp->mouse_pos+scp->xsize+1-scp->scr_buf) >= scp->end) {
1571		    remove_mouse_image(scp);
1572		}
1573		scp->status &= ~MOUSE_MOVED;
1574		draw_mouse_image(scp);
1575	    }
1576	    else {
1577		/* mouse didn't move, has it been overwritten ? */
1578		if ((scp->mouse_pos+scp->xsize+1-scp->scr_buf) >= scp->start &&
1579		    (scp->mouse_pos - scp->scr_buf) <= scp->end) {
1580		    draw_mouse_image(scp);
1581		}
1582	    }
1583	}
1584
1585	/* update cursor image */
1586	if (scp->status & CURSOR_ENABLED) {
1587	    /* did cursor move since last time ? */
1588	    if (scp->cursor_pos != scp->cursor_oldpos) {
1589		/* do we need to remove old cursor image ? */
1590		if ((scp->cursor_oldpos - scp->scr_buf) < scp->start ||
1591		    ((scp->cursor_oldpos - scp->scr_buf) > scp->end)) {
1592		    remove_cursor_image(scp);
1593		}
1594    		scp->cursor_oldpos = scp->cursor_pos;
1595		draw_cursor_image(scp);
1596	    }
1597	    else {
1598		/* cursor didn't move, has it been overwritten ? */
1599		if (scp->cursor_pos - scp->scr_buf >= scp->start &&
1600		    scp->cursor_pos - scp->scr_buf <= scp->end) {
1601		    	draw_cursor_image(scp);
1602		} else {
1603		    /* if its a blinking cursor, we may have to update it */
1604		    if (flags & BLINK_CURSOR)
1605			draw_cursor_image(scp);
1606		}
1607	    }
1608	    blinkrate++;
1609	}
1610
1611	if (scp->mouse_cut_start != NULL)
1612	    draw_cutmarking(scp);
1613
1614	scp->end = 0;
1615	scp->start = scp->xsize*scp->ysize;
1616    }
1617    if (scrn_blank_time && (time.tv_sec > scrn_time_stamp+scrn_blank_time))
1618	(*current_saver)(TRUE);
1619    timeout((timeout_func_t)scrn_timer, 0, hz/25);
1620    splx(s);
1621}
1622
1623static void
1624clear_screen(scr_stat *scp)
1625{
1626    move_crsr(scp, 0, 0);
1627    scp->cursor_oldpos = scp->cursor_pos;
1628    fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
1629	  scp->xsize * scp->ysize);
1630    mark_all(scp);
1631    remove_cutmarking(scp);
1632}
1633
1634static int
1635switch_scr(scr_stat *scp, u_int next_scr)
1636{
1637    if (switch_in_progress && (cur_console->proc != pfind(cur_console->pid)))
1638	switch_in_progress = FALSE;
1639
1640    if (next_scr >= MAXCONS || switch_in_progress ||
1641	(cur_console->smode.mode == VT_AUTO
1642	 && cur_console->status & UNKNOWN_MODE)) {
1643	do_bell(scp, BELL_PITCH, BELL_DURATION);
1644	return EINVAL;
1645    }
1646
1647    /* is the wanted virtual console open ? */
1648    if (next_scr) {
1649	struct tty *tp = VIRTUAL_TTY(next_scr);
1650	if (!(tp->t_state & TS_ISOPEN)) {
1651	    do_bell(scp, BELL_PITCH, BELL_DURATION);
1652	    return EINVAL;
1653	}
1654    }
1655    /* delay switch if actively updating screen */
1656    if (write_in_progress || blink_in_progress) {
1657	delayed_next_scr = next_scr+1;
1658	return 0;
1659    }
1660    switch_in_progress = TRUE;
1661    old_scp = cur_console;
1662    new_scp = console[next_scr];
1663    wakeup((caddr_t)&new_scp->smode);
1664    if (new_scp == old_scp) {
1665	switch_in_progress = FALSE;
1666	delayed_next_scr = FALSE;
1667	return 0;
1668    }
1669
1670    /* has controlling process died? */
1671    if (old_scp->proc && (old_scp->proc != pfind(old_scp->pid)))
1672	old_scp->smode.mode = VT_AUTO;
1673    if (new_scp->proc && (new_scp->proc != pfind(new_scp->pid)))
1674	new_scp->smode.mode = VT_AUTO;
1675
1676    /* check the modes and switch appropriately */
1677    if (old_scp->smode.mode == VT_PROCESS) {
1678	old_scp->status |= SWITCH_WAIT_REL;
1679	psignal(old_scp->proc, old_scp->smode.relsig);
1680    }
1681    else {
1682	exchange_scr();
1683	if (new_scp->smode.mode == VT_PROCESS) {
1684	    new_scp->status |= SWITCH_WAIT_ACQ;
1685	    psignal(new_scp->proc, new_scp->smode.acqsig);
1686	}
1687	else
1688	    switch_in_progress = FALSE;
1689    }
1690    return 0;
1691}
1692
1693static void
1694exchange_scr(void)
1695{
1696    move_crsr(old_scp, old_scp->xpos, old_scp->ypos);
1697    cur_console = new_scp;
1698    if (old_scp->mode != new_scp->mode || (old_scp->status & UNKNOWN_MODE)){
1699	if (crtc_vga && video_mode_ptr)
1700	    set_mode(new_scp);
1701    }
1702    move_crsr(new_scp, new_scp->xpos, new_scp->ypos);
1703    if ((old_scp->status & UNKNOWN_MODE) && crtc_vga) {
1704	if (flags & CHAR_CURSOR)
1705	    set_destructive_cursor(new_scp);
1706	load_palette(palette);
1707    }
1708    if (old_scp->status & KBD_RAW_MODE || new_scp->status & KBD_RAW_MODE)
1709	shfts = ctls = alts = agrs = metas = 0;
1710    update_leds(new_scp->status);
1711    delayed_next_scr = FALSE;
1712    mark_all(new_scp);
1713}
1714
1715static void
1716scan_esc(scr_stat *scp, u_char c)
1717{
1718    static u_char ansi_col[16] =
1719	{0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15};
1720    int i, n;
1721    u_short *src, *dst, count;
1722
1723    if (scp->term.esc == 1) {
1724	switch (c) {
1725
1726	case '7':   /* Save cursor position */
1727	    scp->saved_xpos = scp->xpos;
1728	    scp->saved_ypos = scp->ypos;
1729	    break;
1730
1731	case '8':   /* Restore saved cursor position */
1732	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
1733		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
1734	    break;
1735
1736	case '[':   /* Start ESC [ sequence */
1737	    scp->term.esc = 2;
1738	    scp->term.last_param = -1;
1739	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
1740		scp->term.param[i] = 1;
1741	    scp->term.num_param = 0;
1742	    return;
1743
1744	case 'M':   /* Move cursor up 1 line, scroll if at top */
1745	    if (scp->ypos > 0)
1746		move_crsr(scp, scp->xpos, scp->ypos - 1);
1747	    else {
1748		bcopyw(scp->scr_buf, scp->scr_buf + scp->xsize,
1749		       (scp->ysize - 1) * scp->xsize * sizeof(u_short));
1750		fillw(scp->term.cur_color | scr_map[0x20],
1751		      scp->scr_buf, scp->xsize);
1752    		mark_all(scp);
1753	    }
1754	    break;
1755#if notyet
1756	case 'Q':
1757	    scp->term.esc = 4;
1758	    break;
1759#endif
1760	case 'c':   /* Clear screen & home */
1761	    clear_screen(scp);
1762	    break;
1763	}
1764    }
1765    else if (scp->term.esc == 2) {
1766	if (c >= '0' && c <= '9') {
1767	    if (scp->term.num_param < MAX_ESC_PAR) {
1768	    if (scp->term.last_param != scp->term.num_param) {
1769		scp->term.last_param = scp->term.num_param;
1770		scp->term.param[scp->term.num_param] = 0;
1771	    }
1772	    else
1773		scp->term.param[scp->term.num_param] *= 10;
1774	    scp->term.param[scp->term.num_param] += c - '0';
1775	    return;
1776	    }
1777	}
1778	scp->term.num_param = scp->term.last_param + 1;
1779	switch (c) {
1780
1781	case ';':
1782	    if (scp->term.num_param < MAX_ESC_PAR)
1783		return;
1784	    break;
1785
1786	case '=':
1787	    scp->term.esc = 3;
1788	    scp->term.last_param = -1;
1789	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
1790		scp->term.param[i] = 1;
1791	    scp->term.num_param = 0;
1792	    return;
1793
1794	case 'A':   /* up n rows */
1795	    n = scp->term.param[0]; if (n < 1) n = 1;
1796	    move_crsr(scp, scp->xpos, scp->ypos - n);
1797	    break;
1798
1799	case 'B':   /* down n rows */
1800	    n = scp->term.param[0]; if (n < 1) n = 1;
1801	    move_crsr(scp, scp->xpos, scp->ypos + n);
1802	    break;
1803
1804	case 'C':   /* right n columns */
1805	    n = scp->term.param[0]; if (n < 1) n = 1;
1806	    move_crsr(scp, scp->xpos + n, scp->ypos);
1807	    break;
1808
1809	case 'D':   /* left n columns */
1810	    n = scp->term.param[0]; if (n < 1) n = 1;
1811	    move_crsr(scp, scp->xpos - n, scp->ypos);
1812	    break;
1813
1814	case 'E':   /* cursor to start of line n lines down */
1815	    n = scp->term.param[0]; if (n < 1) n = 1;
1816	    move_crsr(scp, 0, scp->ypos + n);
1817	    break;
1818
1819	case 'F':   /* cursor to start of line n lines up */
1820	    n = scp->term.param[0]; if (n < 1) n = 1;
1821	    move_crsr(scp, 0, scp->ypos - n);
1822	    break;
1823
1824	case 'f':   /* Cursor move */
1825	case 'H':
1826	    if (scp->term.num_param == 0)
1827		move_crsr(scp, 0, 0);
1828	    else if (scp->term.num_param == 2)
1829		move_crsr(scp, scp->term.param[1] - 1, scp->term.param[0] - 1);
1830	    break;
1831
1832	case 'J':   /* Clear all or part of display */
1833	    if (scp->term.num_param == 0)
1834		n = 0;
1835	    else
1836		n = scp->term.param[0];
1837	    switch (n) {
1838	    case 0: /* clear form cursor to end of display */
1839		fillw(scp->term.cur_color | scr_map[0x20],
1840		      scp->cursor_pos,
1841		      scp->scr_buf + scp->xsize * scp->ysize - scp->cursor_pos);
1842    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1843    		mark_for_update(scp, scp->xsize * scp->ysize);
1844		remove_cutmarking(scp);
1845		break;
1846	    case 1: /* clear from beginning of display to cursor */
1847		fillw(scp->term.cur_color | scr_map[0x20],
1848		      scp->scr_buf,
1849		      scp->cursor_pos - scp->scr_buf);
1850    		mark_for_update(scp, 0);
1851    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1852		remove_cutmarking(scp);
1853		break;
1854	    case 2: /* clear entire display */
1855		fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
1856		      scp->xsize * scp->ysize);
1857		mark_all(scp);
1858		remove_cutmarking(scp);
1859		break;
1860	    }
1861	    break;
1862
1863	case 'K':   /* Clear all or part of line */
1864	    if (scp->term.num_param == 0)
1865		n = 0;
1866	    else
1867		n = scp->term.param[0];
1868	    switch (n) {
1869	    case 0: /* clear form cursor to end of line */
1870		fillw(scp->term.cur_color | scr_map[0x20],
1871		      scp->cursor_pos,
1872		      scp->xsize - scp->xpos);
1873    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1874    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf +
1875				scp->xsize - scp->xpos);
1876		break;
1877	    case 1: /* clear from beginning of line to cursor */
1878		fillw(scp->term.cur_color | scr_map[0x20],
1879		      scp->cursor_pos - scp->xpos,
1880		      scp->xpos + 1);
1881    		mark_for_update(scp, scp->ypos * scp->xsize);
1882    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1883		break;
1884	    case 2: /* clear entire line */
1885		fillw(scp->term.cur_color | scr_map[0x20],
1886		      scp->cursor_pos - scp->xpos,
1887		      scp->xsize);
1888    		mark_for_update(scp, scp->ypos * scp->xsize);
1889    		mark_for_update(scp, (scp->ypos + 1) * scp->xsize);
1890		break;
1891	    }
1892	    break;
1893
1894	case 'L':   /* Insert n lines */
1895	    n = scp->term.param[0]; if (n < 1) n = 1;
1896	    if (n > scp->ysize - scp->ypos)
1897		n = scp->ysize - scp->ypos;
1898	    src = scp->scr_buf + scp->ypos * scp->xsize;
1899	    dst = src + n * scp->xsize;
1900	    count = scp->ysize - (scp->ypos + n);
1901	    bcopyw(src, dst, count * scp->xsize * sizeof(u_short));
1902	    fillw(scp->term.cur_color | scr_map[0x20], src,
1903		  n * scp->xsize);
1904	    mark_for_update(scp, scp->ypos * scp->xsize);
1905	    mark_for_update(scp, scp->xsize * scp->ysize);
1906	    break;
1907
1908	case 'M':   /* Delete n lines */
1909	    n = scp->term.param[0]; if (n < 1) n = 1;
1910	    if (n > scp->ysize - scp->ypos)
1911		n = scp->ysize - scp->ypos;
1912	    dst = scp->scr_buf + scp->ypos * scp->xsize;
1913	    src = dst + n * scp->xsize;
1914	    count = scp->ysize - (scp->ypos + n);
1915	    bcopyw(src, dst, count * scp->xsize * sizeof(u_short));
1916	    src = dst + count * scp->xsize;
1917	    fillw(scp->term.cur_color | scr_map[0x20], src,
1918		  n * scp->xsize);
1919	    mark_for_update(scp, scp->ypos * scp->xsize);
1920	    mark_for_update(scp, scp->xsize * scp->ysize);
1921	    break;
1922
1923	case 'P':   /* Delete n chars */
1924	    n = scp->term.param[0]; if (n < 1) n = 1;
1925	    if (n > scp->xsize - scp->xpos)
1926		n = scp->xsize - scp->xpos;
1927	    dst = scp->cursor_pos;
1928	    src = dst + n;
1929	    count = scp->xsize - (scp->xpos + n);
1930	    bcopyw(src, dst, count * sizeof(u_short));
1931	    src = dst + count;
1932	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
1933	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1934	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
1935	    break;
1936
1937	case '@':   /* Insert n chars */
1938	    n = scp->term.param[0]; if (n < 1) n = 1;
1939	    if (n > scp->xsize - scp->xpos)
1940		n = scp->xsize - scp->xpos;
1941	    src = scp->cursor_pos;
1942	    dst = src + n;
1943	    count = scp->xsize - (scp->xpos + n);
1944	    bcopyw(src, dst, count * sizeof(u_short));
1945	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
1946	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1947	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
1948	    break;
1949
1950	case 'S':   /* scroll up n lines */
1951	    n = scp->term.param[0]; if (n < 1)  n = 1;
1952	    if (n > scp->ysize)
1953		n = scp->ysize;
1954	    bcopyw(scp->scr_buf + (scp->xsize * n),
1955		   scp->scr_buf,
1956		   scp->xsize * (scp->ysize - n) * sizeof(u_short));
1957	    fillw(scp->term.cur_color | scr_map[0x20],
1958		  scp->scr_buf + scp->xsize * (scp->ysize - n),
1959		  scp->xsize * n);
1960    	    mark_all(scp);
1961	    break;
1962
1963	case 'T':   /* scroll down n lines */
1964	    n = scp->term.param[0]; if (n < 1)  n = 1;
1965	    if (n > scp->ysize)
1966		n = scp->ysize;
1967	    bcopyw(scp->scr_buf,
1968		  scp->scr_buf + (scp->xsize * n),
1969		  scp->xsize * (scp->ysize - n) *
1970		  sizeof(u_short));
1971	    fillw(scp->term.cur_color | scr_map[0x20],
1972		  scp->scr_buf, scp->xsize * n);
1973    	    mark_all(scp);
1974	    break;
1975
1976	case 'X':   /* erase n characters in line */
1977	    n = scp->term.param[0]; if (n < 1)  n = 1;
1978	    if (n > scp->xsize - scp->xpos)
1979		n = scp->xsize - scp->xpos;
1980	    fillw(scp->term.cur_color | scr_map[0x20],
1981		  scp->cursor_pos, n);
1982	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1983	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n);
1984	    break;
1985
1986	case 'Z':   /* move n tabs backwards */
1987	    n = scp->term.param[0]; if (n < 1)  n = 1;
1988	    if ((i = scp->xpos & 0xf8) == scp->xpos)
1989		i -= 8*n;
1990	    else
1991		i -= 8*(n-1);
1992	    if (i < 0)
1993		i = 0;
1994	    move_crsr(scp, i, scp->ypos);
1995	    break;
1996
1997	case '`':   /* move cursor to column n */
1998	    n = scp->term.param[0]; if (n < 1)  n = 1;
1999	    move_crsr(scp, n - 1, scp->ypos);
2000	    break;
2001
2002	case 'a':   /* move cursor n columns to the right */
2003	    n = scp->term.param[0]; if (n < 1)  n = 1;
2004	    move_crsr(scp, scp->xpos + n, scp->ypos);
2005	    break;
2006
2007	case 'd':   /* move cursor to row n */
2008	    n = scp->term.param[0]; if (n < 1)  n = 1;
2009	    move_crsr(scp, scp->xpos, n - 1);
2010	    break;
2011
2012	case 'e':   /* move cursor n rows down */
2013	    n = scp->term.param[0]; if (n < 1)  n = 1;
2014	    move_crsr(scp, scp->xpos, scp->ypos + n);
2015	    break;
2016
2017	case 'm':   /* change attribute */
2018	    if (scp->term.num_param == 0) {
2019		scp->term.attr_mask = NORMAL_ATTR;
2020		scp->term.cur_attr =
2021		    scp->term.cur_color = scp->term.std_color;
2022		break;
2023	    }
2024	    for (i = 0; i < scp->term.num_param; i++) {
2025		switch (n = scp->term.param[i]) {
2026		case 0: /* back to normal */
2027		    scp->term.attr_mask = NORMAL_ATTR;
2028		    scp->term.cur_attr =
2029			scp->term.cur_color = scp->term.std_color;
2030		    break;
2031		case 1: /* bold */
2032		    scp->term.attr_mask |= BOLD_ATTR;
2033		    scp->term.cur_attr = mask2attr(&scp->term);
2034		    break;
2035		case 4: /* underline */
2036		    scp->term.attr_mask |= UNDERLINE_ATTR;
2037		    scp->term.cur_attr = mask2attr(&scp->term);
2038		    break;
2039		case 5: /* blink */
2040		    scp->term.attr_mask |= BLINK_ATTR;
2041		    scp->term.cur_attr = mask2attr(&scp->term);
2042		    break;
2043		case 7: /* reverse video */
2044		    scp->term.attr_mask |= REVERSE_ATTR;
2045		    scp->term.cur_attr = mask2attr(&scp->term);
2046		    break;
2047		case 30: case 31: /* set fg color */
2048		case 32: case 33: case 34:
2049		case 35: case 36: case 37:
2050		    scp->term.attr_mask |= FOREGROUND_CHANGED;
2051		    scp->term.cur_color =
2052			(scp->term.cur_color&0xF000) | (ansi_col[(n-30)&7]<<8);
2053		    scp->term.cur_attr = mask2attr(&scp->term);
2054		    break;
2055		case 40: case 41: /* set bg color */
2056		case 42: case 43: case 44:
2057		case 45: case 46: case 47:
2058		    scp->term.attr_mask |= BACKGROUND_CHANGED;
2059		    scp->term.cur_color =
2060			(scp->term.cur_color&0x0F00) | (ansi_col[(n-40)&7]<<12);
2061		    scp->term.cur_attr = mask2attr(&scp->term);
2062		    break;
2063		}
2064	    }
2065	    break;
2066
2067	case 's':   /* Save cursor position */
2068	    scp->saved_xpos = scp->xpos;
2069	    scp->saved_ypos = scp->ypos;
2070	    break;
2071
2072	case 'u':   /* Restore saved cursor position */
2073	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
2074		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
2075	    break;
2076
2077	case 'x':
2078	    if (scp->term.num_param == 0)
2079		n = 0;
2080	    else
2081		n = scp->term.param[0];
2082	    switch (n) {
2083	    case 0:     /* reset attributes */
2084		scp->term.attr_mask = NORMAL_ATTR;
2085		scp->term.cur_attr =
2086		    scp->term.cur_color = scp->term.std_color =
2087		    current_default->std_color;
2088		scp->term.rev_color = current_default->rev_color;
2089		break;
2090	    case 1:     /* set ansi background */
2091		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
2092		scp->term.cur_color = scp->term.std_color =
2093		    (scp->term.std_color & 0x0F00) |
2094		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
2095		scp->term.cur_attr = mask2attr(&scp->term);
2096		break;
2097	    case 2:     /* set ansi foreground */
2098		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
2099		scp->term.cur_color = scp->term.std_color =
2100		    (scp->term.std_color & 0xF000) |
2101		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
2102		scp->term.cur_attr = mask2attr(&scp->term);
2103		break;
2104	    case 3:     /* set ansi attribute directly */
2105		scp->term.attr_mask &= ~(FOREGROUND_CHANGED|BACKGROUND_CHANGED);
2106		scp->term.cur_color = scp->term.std_color =
2107		    (scp->term.param[1]&0xFF)<<8;
2108		scp->term.cur_attr = mask2attr(&scp->term);
2109		break;
2110	    case 5:     /* set ansi reverse video background */
2111		scp->term.rev_color =
2112		    (scp->term.rev_color & 0x0F00) |
2113		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
2114		scp->term.cur_attr = mask2attr(&scp->term);
2115		break;
2116	    case 6:     /* set ansi reverse video foreground */
2117		scp->term.rev_color =
2118		    (scp->term.rev_color & 0xF000) |
2119		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
2120		scp->term.cur_attr = mask2attr(&scp->term);
2121		break;
2122	    case 7:     /* set ansi reverse video directly */
2123		scp->term.rev_color =
2124		    (scp->term.param[1]&0xFF)<<8;
2125		scp->term.cur_attr = mask2attr(&scp->term);
2126		break;
2127	    }
2128	    break;
2129
2130	case 'z':   /* switch to (virtual) console n */
2131	    if (scp->term.num_param == 1)
2132		switch_scr(scp, scp->term.param[0]);
2133	    break;
2134	}
2135    }
2136    else if (scp->term.esc == 3) {
2137	if (c >= '0' && c <= '9') {
2138	    if (scp->term.num_param < MAX_ESC_PAR) {
2139	    if (scp->term.last_param != scp->term.num_param) {
2140		scp->term.last_param = scp->term.num_param;
2141		scp->term.param[scp->term.num_param] = 0;
2142	    }
2143	    else
2144		scp->term.param[scp->term.num_param] *= 10;
2145	    scp->term.param[scp->term.num_param] += c - '0';
2146	    return;
2147	    }
2148	}
2149	scp->term.num_param = scp->term.last_param + 1;
2150	switch (c) {
2151
2152	case ';':
2153	    if (scp->term.num_param < MAX_ESC_PAR)
2154		return;
2155	    break;
2156
2157	case 'A':   /* set display border color */
2158	    if (scp->term.num_param == 1)
2159		scp->border=scp->term.param[0] & 0xff;
2160		if (scp == cur_console)
2161		    set_border(scp->border);
2162	    break;
2163
2164	case 'B':   /* set bell pitch and duration */
2165	    if (scp->term.num_param == 2) {
2166		scp->bell_pitch = scp->term.param[0];
2167		scp->bell_duration = scp->term.param[1]*10;
2168	    }
2169	    break;
2170
2171	case 'C':   /* set cursor type & shape */
2172	    if (scp->term.num_param == 1) {
2173		if (scp->term.param[0] & 0x01)
2174		    flags |= BLINK_CURSOR;
2175		else
2176		    flags &= ~BLINK_CURSOR;
2177		if (scp->term.param[0] & 0x02) {
2178		    flags |= CHAR_CURSOR;
2179		    set_destructive_cursor(scp);
2180		} else
2181		    flags &= ~CHAR_CURSOR;
2182	    }
2183	    else if (scp->term.num_param == 2) {
2184		scp->cursor_start = scp->term.param[0] & 0x1F;
2185		scp->cursor_end = scp->term.param[1] & 0x1F;
2186		if (flags & CHAR_CURSOR)
2187			set_destructive_cursor(scp);
2188	    }
2189	    break;
2190
2191	case 'F':   /* set ansi foreground */
2192	    if (scp->term.num_param == 1) {
2193		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
2194		scp->term.cur_color = scp->term.std_color =
2195		    (scp->term.std_color & 0xF000)
2196		    | ((scp->term.param[0] & 0x0F) << 8);
2197		scp->term.cur_attr = mask2attr(&scp->term);
2198	    }
2199	    break;
2200
2201	case 'G':   /* set ansi background */
2202	    if (scp->term.num_param == 1) {
2203		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
2204		scp->term.cur_color = scp->term.std_color =
2205		    (scp->term.std_color & 0x0F00)
2206		    | ((scp->term.param[0] & 0x0F) << 12);
2207		scp->term.cur_attr = mask2attr(&scp->term);
2208	    }
2209	    break;
2210
2211	case 'H':   /* set ansi reverse video foreground */
2212	    if (scp->term.num_param == 1) {
2213		scp->term.rev_color =
2214		    (scp->term.rev_color & 0xF000)
2215		    | ((scp->term.param[0] & 0x0F) << 8);
2216		scp->term.cur_attr = mask2attr(&scp->term);
2217	    }
2218	    break;
2219
2220	case 'I':   /* set ansi reverse video background */
2221	    if (scp->term.num_param == 1) {
2222		scp->term.rev_color =
2223		    (scp->term.rev_color & 0x0F00)
2224		    | ((scp->term.param[0] & 0x0F) << 12);
2225		scp->term.cur_attr = mask2attr(&scp->term);
2226	    }
2227	    break;
2228	}
2229    }
2230    scp->term.esc = 0;
2231}
2232
2233static void
2234ansi_put(scr_stat *scp, u_char *buf, int len)
2235{
2236    u_char *ptr = buf;
2237
2238    /* make screensaver happy */
2239    if (scp == cur_console) {
2240	scrn_time_stamp = time.tv_sec;
2241	if (scrn_blanked) {
2242	    (*current_saver)(FALSE);
2243	    mark_all(scp);
2244	}
2245    }
2246    write_in_progress++;
2247outloop:
2248    if (scp->term.esc) {
2249	scan_esc(scp, *ptr++);
2250	len--;
2251    }
2252    else if (PRINTABLE(*ptr)) {     /* Print only printables */
2253 	int cnt = len <= (scp->xsize-scp->xpos) ? len : (scp->xsize-scp->xpos);
2254 	u_short cur_attr = scp->term.cur_attr;
2255 	u_short *cursor_pos = scp->cursor_pos;
2256	do {
2257	    /*
2258	     * gcc-2.6.3 generates poor (un)sign extension code.  Casting the
2259	     * pointers in the following to volatile should have no effect,
2260	     * but in fact speeds up this inner loop from 26 to 18 cycles
2261	     * (+ cache misses) on i486's.
2262	     */
2263#define	UCVP(ucp)	((u_char volatile *)(ucp))
2264	    *cursor_pos++ = UCVP(scr_map)[*UCVP(ptr)] | cur_attr;
2265	    ptr++;
2266	    cnt--;
2267	} while (cnt && PRINTABLE(*ptr));
2268	len -= (cursor_pos - scp->cursor_pos);
2269	scp->xpos += (cursor_pos - scp->cursor_pos);
2270	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2271	mark_for_update(scp, cursor_pos - scp->scr_buf);
2272	scp->cursor_pos = cursor_pos;
2273	if (scp->xpos >= scp->xsize) {
2274	    scp->xpos = 0;
2275	    scp->ypos++;
2276	}
2277    }
2278    else  {
2279	switch(*ptr) {
2280	case 0x07:
2281	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
2282	    break;
2283
2284	case 0x08:      /* non-destructive backspace */
2285	    if (scp->cursor_pos > scp->scr_buf) {
2286	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2287		scp->cursor_pos--;
2288	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2289		if (scp->xpos > 0)
2290		    scp->xpos--;
2291		else {
2292		    scp->xpos += scp->xsize - 1;
2293		    scp->ypos--;
2294		}
2295	    }
2296	    break;
2297
2298	case 0x09:  /* non-destructive tab */
2299	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2300	    scp->cursor_pos += (8 - scp->xpos % 8u);
2301	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2302	    if ((scp->xpos += (8 - scp->xpos % 8u)) >= scp->xsize) {
2303	        scp->xpos = 0;
2304	        scp->ypos++;
2305	    }
2306	    break;
2307
2308	case 0x0a:  /* newline, same pos */
2309	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2310	    scp->cursor_pos += scp->xsize;
2311	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2312	    scp->ypos++;
2313	    break;
2314
2315	case 0x0c:  /* form feed, clears screen */
2316	    clear_screen(scp);
2317	    break;
2318
2319	case 0x0d:  /* return, return to pos 0 */
2320	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2321	    scp->cursor_pos -= scp->xpos;
2322	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2323	    scp->xpos = 0;
2324	    break;
2325
2326	case 0x1b:  /* start escape sequence */
2327	    scp->term.esc = 1;
2328	    scp->term.num_param = 0;
2329	    break;
2330	}
2331	ptr++; len--;
2332    }
2333    /* do we have to scroll ?? */
2334    if (scp->cursor_pos >= scp->scr_buf + scp->ysize * scp->xsize) {
2335	remove_cutmarking(scp);
2336	if (scp->history) {
2337	    bcopyw(scp->scr_buf, scp->history_head,
2338		   scp->xsize * sizeof(u_short));
2339	    scp->history_head += scp->xsize;
2340	    if (scp->history_head + scp->xsize >
2341		scp->history + scp->history_size)
2342		scp->history_head = scp->history;
2343	}
2344	bcopyw(scp->scr_buf + scp->xsize, scp->scr_buf,
2345	       scp->xsize * (scp->ysize - 1) * sizeof(u_short));
2346	fillw(scp->term.cur_color | scr_map[0x20],
2347	      scp->scr_buf + scp->xsize * (scp->ysize - 1),
2348	      scp->xsize);
2349	scp->cursor_pos -= scp->xsize;
2350	scp->ypos--;
2351    	mark_all(scp);
2352    }
2353    if (len)
2354	goto outloop;
2355    write_in_progress--;
2356    if (delayed_next_scr)
2357	switch_scr(scp, delayed_next_scr - 1);
2358}
2359
2360static void
2361scinit(void)
2362{
2363    u_short volatile *cp;
2364    u_short was;
2365    u_int hw_cursor;
2366    u_int i;
2367
2368    if (init_done != COLD)
2369	return;
2370    init_done = WARM;
2371    /*
2372     * Finish defaulting crtc variables for a mono screen.  Crtat is a
2373     * bogus common variable so that it can be shared with pcvt, so it
2374     * can't be statically initialized.  XXX.
2375     */
2376    Crtat = (u_short *)MONO_BUF;
2377    /*
2378     * If CGA memory seems to work, switch to color.
2379     */
2380    cp = (u_short *)CGA_BUF;
2381    was = *cp;
2382    *cp = (u_short) 0xA55A;
2383    if (*cp == 0xA55A) {
2384	Crtat = (u_short *)CGA_BUF;
2385	crtc_addr = COLOR_BASE;
2386    }
2387    *cp = was;
2388
2389    /*
2390     * Ensure a zero start address.  This is mainly to recover after
2391     * switching from pcvt using userconfig().  The registers are w/o
2392     * for old hardware so it's too hard to relocate the active screen
2393     * memory.
2394     */
2395    outb(crtc_addr, 12);
2396    outb(crtc_addr + 1, 0);
2397    outb(crtc_addr, 13);
2398    outb(crtc_addr + 1, 0);
2399
2400    /* extract cursor location */
2401    outb(crtc_addr, 14);
2402    hw_cursor = inb(crtc_addr + 1) << 8;
2403    outb(crtc_addr, 15);
2404    hw_cursor |= inb(crtc_addr + 1);
2405
2406    /*
2407     * Validate cursor location.  It may be off the screen.  Then we must
2408     * not use it for the initial buffer offset.
2409     */
2410    if (hw_cursor >= ROW * COL)
2411	hw_cursor = (ROW - 1) * COL;
2412
2413    /* move hardware cursor out of the way */
2414    outb(crtc_addr, 14);
2415    outb(crtc_addr + 1, 0xff);
2416    outb(crtc_addr, 15);
2417    outb(crtc_addr + 1, 0xff);
2418
2419    /* is this a VGA or higher ? */
2420    outb(crtc_addr, 7);
2421    if (inb(crtc_addr) == 7) {
2422	u_long  pa;
2423	u_long  segoff;
2424
2425	crtc_vga = TRUE;
2426
2427	/* Get the BIOS video mode pointer */
2428	segoff = *(u_long *)pa_to_va(0x4a8);
2429	pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
2430	if (ISMAPPED(pa, sizeof(u_long))) {
2431	    segoff = *(u_long *)pa_to_va(pa);
2432	    pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
2433	    if (ISMAPPED(pa, 64))
2434		video_mode_ptr = (char *)pa_to_va(pa);
2435	}
2436    }
2437    current_default = &user_default;
2438    console[0] = &main_console;
2439    init_scp(console[0]);
2440    cur_console = console[0];
2441
2442    /* copy screen to temporary buffer */
2443    bcopyw(Crtat, sc_buffer,
2444	   console[0]->xsize * console[0]->ysize * sizeof(u_short));
2445
2446    console[0]->scr_buf = console[0]->mouse_pos = sc_buffer;
2447    console[0]->cursor_pos = console[0]->cursor_oldpos = sc_buffer + hw_cursor;
2448    console[0]->xpos = hw_cursor % COL;
2449    console[0]->ypos = hw_cursor / COL;
2450    for (i=1; i<MAXCONS; i++)
2451	console[i] = NULL;
2452    kernel_console.esc = 0;
2453    kernel_console.attr_mask = NORMAL_ATTR;
2454    kernel_console.cur_attr =
2455	kernel_console.cur_color = kernel_console.std_color =
2456	kernel_default.std_color;
2457    kernel_console.rev_color = kernel_default.rev_color;
2458
2459    /* initialize mapscrn arrays to a one to one map */
2460    for (i=0; i<sizeof(scr_map); i++) {
2461	scr_map[i] = scr_rmap[i] = i;
2462    }
2463
2464    /* Save font and palette if VGA */
2465    if (crtc_vga) {
2466	copy_font(SAVE, FONT_16, font_16);
2467	fonts_loaded = FONT_16;
2468	save_palette();
2469    }
2470
2471#ifdef SC_SPLASH_SCREEN
2472    /*
2473     * Now put up a graphics image, and maybe cycle a
2474     * couble of palette entries for simple animation.
2475     */
2476    toggle_splash_screen(cur_console);
2477#endif
2478}
2479
2480static scr_stat
2481*alloc_scp()
2482{
2483    scr_stat *scp;
2484
2485    scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
2486    init_scp(scp);
2487    scp->scr_buf = scp->cursor_pos = scp->cursor_oldpos =
2488	(u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
2489			  M_DEVBUF, M_WAITOK);
2490    scp->mouse_pos = scp->mouse_oldpos =
2491	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
2492			scp->mouse_xpos/8);
2493    scp->history_head = scp->history_pos = scp->history =
2494	(u_short *)malloc(scp->history_size*sizeof(u_short),
2495			  M_DEVBUF, M_WAITOK);
2496    bzero(scp->history_head, scp->history_size*sizeof(u_short));
2497/* SOS
2498    if (crtc_vga && video_mode_ptr)
2499	set_mode(scp);
2500*/
2501    clear_screen(scp);
2502    return scp;
2503}
2504
2505static void
2506init_scp(scr_stat *scp)
2507{
2508    if (crtc_vga)
2509	if (crtc_addr == MONO_BASE)
2510	    scp->mode = M_VGA_M80x25;
2511	else
2512	    scp->mode = M_VGA_C80x25;
2513    else
2514	if (crtc_addr == MONO_BASE)
2515	    scp->mode = M_B80x25;
2516	else
2517	    scp->mode = M_C80x25;
2518
2519    scp->font_size = FONT_16;
2520    scp->xsize = COL;
2521    scp->ysize = ROW;
2522    scp->xpos = scp->ypos = 0;
2523    scp->saved_xpos = scp->saved_ypos = -1;
2524    scp->start = scp->xsize * scp->ysize;
2525    scp->end = 0;
2526    scp->term.esc = 0;
2527    scp->term.attr_mask = NORMAL_ATTR;
2528    scp->term.cur_attr =
2529	scp->term.cur_color = scp->term.std_color =
2530	current_default->std_color;
2531    scp->term.rev_color = current_default->rev_color;
2532    scp->border = BG_BLACK;
2533    scp->cursor_start = *(char *)pa_to_va(0x461);
2534    scp->cursor_end = *(char *)pa_to_va(0x460);
2535    scp->mouse_xpos = scp->xsize*8/2;
2536    scp->mouse_ypos = scp->ysize*scp->font_size/2;
2537    scp->mouse_cut_start = scp->mouse_cut_end = NULL;
2538    scp->mouse_signal = 0;
2539    scp->mouse_pid = 0;
2540    scp->mouse_proc = NULL;
2541    scp->bell_pitch = BELL_PITCH;
2542    scp->bell_duration = BELL_DURATION;
2543    scp->status = (*(char *)pa_to_va(0x417) & 0x20) ? NLKED : 0;
2544    scp->status |= CURSOR_ENABLED;
2545    scp->pid = 0;
2546    scp->proc = NULL;
2547    scp->smode.mode = VT_AUTO;
2548    scp->history_head = scp->history_pos = scp->history = NULL;
2549    scp->history_size = HISTORY_SIZE;
2550}
2551
2552static u_char
2553*get_fstr(u_int c, u_int *len)
2554{
2555    u_int i;
2556
2557    if (!(c & FKEY))
2558	return(NULL);
2559    i = (c & 0xFF) - F_FN;
2560    if (i > n_fkey_tab)
2561	return(NULL);
2562    *len = fkey_tab[i].len;
2563    return(fkey_tab[i].str);
2564}
2565
2566static void
2567history_to_screen(scr_stat *scp)
2568{
2569    int i;
2570
2571    for (i=0; i<scp->ysize; i++)
2572	bcopyw(scp->history + (((scp->history_pos - scp->history) +
2573	       scp->history_size-((i+1)*scp->xsize))%scp->history_size),
2574	       scp->scr_buf + (scp->xsize * (scp->ysize-1 - i)),
2575	       scp->xsize * sizeof(u_short));
2576    mark_all(scp);
2577}
2578
2579static int
2580history_up_line(scr_stat *scp)
2581{
2582    if (WRAPHIST(scp, scp->history_pos, -(scp->xsize*scp->ysize)) !=
2583	scp->history_head) {
2584	scp->history_pos = WRAPHIST(scp, scp->history_pos, -scp->xsize);
2585	history_to_screen(scp);
2586	return 0;
2587    }
2588    else
2589	return -1;
2590}
2591
2592static int
2593history_down_line(scr_stat *scp)
2594{
2595    if (scp->history_pos != scp->history_head) {
2596	scp->history_pos = WRAPHIST(scp, scp->history_pos, scp->xsize);
2597	history_to_screen(scp);
2598	return 0;
2599    }
2600    else
2601	return -1;
2602}
2603
2604/*
2605 * scgetc(flags) - get character from keyboard.
2606 * If flags & SCGETC_CN, then avoid harmful side effects.
2607 * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
2608 * return NOKEY if there is nothing there.
2609 */
2610static u_int
2611scgetc(u_int flags)
2612{
2613    struct key_t *key;
2614    u_char scancode, keycode;
2615    u_int state, action;
2616    int c;
2617    static u_char esc_flag = 0, compose = 0;
2618    static u_int chr = 0;
2619
2620next_code:
2621    /* first see if there is something in the keyboard port */
2622    if (flags & SCGETC_NONBLOCK) {
2623	c = read_kbd_data_no_wait(sc_kbdc);
2624	if (c == -1)
2625	    return(NOKEY);
2626    } else {
2627	do {
2628	    c = read_kbd_data(sc_kbdc);
2629	} while(c == -1);
2630    }
2631    scancode = (u_char)c;
2632
2633    /* do the /dev/random device a favour */
2634    if (!(flags & SCGETC_CN))
2635	add_keyboard_randomness(scancode);
2636
2637    if (cur_console->status & KBD_RAW_MODE)
2638	return scancode;
2639
2640    keycode = scancode & 0x7F;
2641    switch (esc_flag) {
2642    case 0x00:      /* normal scancode */
2643	switch(scancode) {
2644	case 0xB8:  /* left alt (compose key) */
2645	    if (compose) {
2646		compose = 0;
2647		if (chr > 255) {
2648		    do_bell(cur_console,
2649			BELL_PITCH, BELL_DURATION);
2650		    chr = 0;
2651		}
2652	    }
2653	    break;
2654	case 0x38:
2655	    if (!compose) {
2656		compose = 1;
2657		chr = 0;
2658	    }
2659	    break;
2660	case 0xE0:
2661	case 0xE1:
2662	    esc_flag = scancode;
2663	    goto next_code;
2664	}
2665	break;
2666    case 0xE0:      /* 0xE0 prefix */
2667	esc_flag = 0;
2668	switch (keycode) {
2669	case 0x1C:  /* right enter key */
2670	    keycode = 0x59;
2671	    break;
2672	case 0x1D:  /* right ctrl key */
2673	    keycode = 0x5A;
2674	    break;
2675	case 0x35:  /* keypad divide key */
2676	    keycode = 0x5B;
2677	    break;
2678	case 0x37:  /* print scrn key */
2679	    keycode = 0x5C;
2680	    break;
2681	case 0x38:  /* right alt key (alt gr) */
2682	    keycode = 0x5D;
2683	    break;
2684	case 0x47:  /* grey home key */
2685	    keycode = 0x5E;
2686	    break;
2687	case 0x48:  /* grey up arrow key */
2688	    keycode = 0x5F;
2689	    break;
2690	case 0x49:  /* grey page up key */
2691	    keycode = 0x60;
2692	    break;
2693	case 0x4B:  /* grey left arrow key */
2694	    keycode = 0x61;
2695	    break;
2696	case 0x4D:  /* grey right arrow key */
2697	    keycode = 0x62;
2698	    break;
2699	case 0x4F:  /* grey end key */
2700	    keycode = 0x63;
2701	    break;
2702	case 0x50:  /* grey down arrow key */
2703	    keycode = 0x64;
2704	    break;
2705	case 0x51:  /* grey page down key */
2706	    keycode = 0x65;
2707	    break;
2708	case 0x52:  /* grey insert key */
2709	    keycode = 0x66;
2710	    break;
2711	case 0x53:  /* grey delete key */
2712	    keycode = 0x67;
2713	    break;
2714
2715	/* the following 3 are only used on the MS "Natural" keyboard */
2716	case 0x5b:  /* left Window key */
2717	    keycode = 0x69;
2718	    break;
2719	case 0x5c:  /* right Window key */
2720	    keycode = 0x6a;
2721	    break;
2722	case 0x5d:  /* menu key */
2723	    keycode = 0x6b;
2724	    break;
2725	default:    /* ignore everything else */
2726	    goto next_code;
2727	}
2728	break;
2729    case 0xE1:      /* 0xE1 prefix */
2730	esc_flag = 0;
2731	if (keycode == 0x1D)
2732	    esc_flag = 0x1D;
2733	goto next_code;
2734	/* NOT REACHED */
2735    case 0x1D:      /* pause / break */
2736	esc_flag = 0;
2737	if (keycode != 0x45)
2738	    goto next_code;
2739	keycode = 0x68;
2740	break;
2741    }
2742
2743    /* if scroll-lock pressed allow history browsing */
2744    if (cur_console->history && cur_console->status & SLKED) {
2745	int i;
2746
2747	cur_console->status &= ~CURSOR_ENABLED;
2748	if (!(cur_console->status & BUFFER_SAVED)) {
2749	    cur_console->status |= BUFFER_SAVED;
2750	    cur_console->history_save = cur_console->history_head;
2751
2752	    /* copy screen into top of history buffer */
2753	    for (i=0; i<cur_console->ysize; i++) {
2754		bcopyw(cur_console->scr_buf + (cur_console->xsize * i),
2755		       cur_console->history_head,
2756		       cur_console->xsize * sizeof(u_short));
2757		cur_console->history_head += cur_console->xsize;
2758		if (cur_console->history_head + cur_console->xsize >
2759		    cur_console->history + cur_console->history_size)
2760		    cur_console->history_head=cur_console->history;
2761	    }
2762	    cur_console->history_pos = cur_console->history_head;
2763	    history_to_screen(cur_console);
2764	}
2765	switch (scancode) {
2766	case 0x47:  /* home key */
2767	    cur_console->history_pos = cur_console->history_head;
2768	    history_to_screen(cur_console);
2769	    goto next_code;
2770
2771	case 0x4F:  /* end key */
2772	    cur_console->history_pos =
2773		WRAPHIST(cur_console, cur_console->history_head,
2774			 cur_console->xsize*cur_console->ysize);
2775	    history_to_screen(cur_console);
2776	    goto next_code;
2777
2778	case 0x48:  /* up arrow key */
2779	    if (history_up_line(cur_console))
2780		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2781	    goto next_code;
2782
2783	case 0x50:  /* down arrow key */
2784	    if (history_down_line(cur_console))
2785		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2786	    goto next_code;
2787
2788	case 0x49:  /* page up key */
2789	    for (i=0; i<cur_console->ysize; i++)
2790	    if (history_up_line(cur_console)) {
2791		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2792		break;
2793	    }
2794	    goto next_code;
2795
2796	case 0x51:  /* page down key */
2797	    for (i=0; i<cur_console->ysize; i++)
2798	    if (history_down_line(cur_console)) {
2799		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2800		break;
2801	    }
2802	    goto next_code;
2803	}
2804    }
2805
2806    if (compose) {
2807	switch (scancode) {
2808	/* key pressed process it */
2809	case 0x47: case 0x48: case 0x49:    /* keypad 7,8,9 */
2810	    chr = (scancode - 0x40) + chr*10;
2811	    goto next_code;
2812	case 0x4B: case 0x4C: case 0x4D:    /* keypad 4,5,6 */
2813	    chr = (scancode - 0x47) + chr*10;
2814	    goto next_code;
2815	case 0x4F: case 0x50: case 0x51:    /* keypad 1,2,3 */
2816	    chr = (scancode - 0x4E) + chr*10;
2817	    goto next_code;
2818	case 0x52:              /* keypad 0 */
2819	    chr *= 10;
2820	    goto next_code;
2821
2822	/* key release, no interest here */
2823	case 0xC7: case 0xC8: case 0xC9:    /* keypad 7,8,9 */
2824	case 0xCB: case 0xCC: case 0xCD:    /* keypad 4,5,6 */
2825	case 0xCF: case 0xD0: case 0xD1:    /* keypad 1,2,3 */
2826	case 0xD2:              /* keypad 0 */
2827	    goto next_code;
2828
2829	case 0x38:              /* left alt key */
2830	    break;
2831	default:
2832	    if (chr) {
2833		compose = chr = 0;
2834		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2835		goto next_code;
2836	    }
2837	    break;
2838	}
2839    }
2840
2841    state = (shfts ? 1 : 0 ) | (2 * (ctls ? 1 : 0)) | (4 * (alts ? 1 : 0));
2842    if ((!agrs && (cur_console->status & ALKED))
2843	|| (agrs && !(cur_console->status & ALKED)))
2844	keycode += ALTGR_OFFSET;
2845    key = &key_map.key[keycode];
2846    if ( ((key->flgs & FLAG_LOCK_C) && (cur_console->status & CLKED))
2847	 || ((key->flgs & FLAG_LOCK_N) && (cur_console->status & NLKED)) )
2848	state ^= 1;
2849
2850    /* Check for make/break */
2851    action = key->map[state];
2852    if (scancode & 0x80) {      /* key released */
2853	if (key->spcl & 0x80) {
2854	    switch (action) {
2855	    case LSH:
2856		shfts &= ~1;
2857		break;
2858	    case RSH:
2859		shfts &= ~2;
2860		break;
2861	    case LCTR:
2862		ctls &= ~1;
2863		break;
2864	    case RCTR:
2865		ctls &= ~2;
2866		break;
2867	    case LALT:
2868		alts &= ~1;
2869		break;
2870	    case RALT:
2871		alts &= ~2;
2872		break;
2873	    case NLK:
2874		nlkcnt = 0;
2875		break;
2876	    case CLK:
2877		clkcnt = 0;
2878		break;
2879	    case SLK:
2880		slkcnt = 0;
2881		break;
2882	    case ASH:
2883		agrs = 0;
2884		break;
2885	    case ALK:
2886		alkcnt = 0;
2887		break;
2888	    case META:
2889		metas = 0;
2890		break;
2891	    }
2892	}
2893	if (chr && !compose) {
2894	    action = chr;
2895	    chr = 0;
2896	    return(action);
2897	}
2898    } else {
2899	/* key pressed */
2900	if (key->spcl & (0x80>>state)) {
2901	    switch (action) {
2902	    /* LOCKING KEYS */
2903	    case NLK:
2904#ifdef SC_SPLASH_SCREEN
2905		toggle_splash_screen(cur_console); /* SOS XXX */
2906#endif
2907		if (!nlkcnt) {
2908		    nlkcnt++;
2909		    if (cur_console->status & NLKED)
2910			cur_console->status &= ~NLKED;
2911		    else
2912			cur_console->status |= NLKED;
2913		    update_leds(cur_console->status);
2914		}
2915		break;
2916	    case CLK:
2917		if (!clkcnt) {
2918		    clkcnt++;
2919		    if (cur_console->status & CLKED)
2920			cur_console->status &= ~CLKED;
2921		    else
2922			cur_console->status |= CLKED;
2923		    update_leds(cur_console->status);
2924		}
2925		break;
2926	    case SLK:
2927		if (!slkcnt) {
2928		    slkcnt++;
2929		    if (cur_console->status & SLKED) {
2930			cur_console->status &= ~SLKED;
2931			if (cur_console->status & BUFFER_SAVED){
2932			    int i;
2933			    u_short *ptr = cur_console->history_save;
2934
2935			    for (i=0; i<cur_console->ysize; i++) {
2936				bcopyw(ptr,
2937				       cur_console->scr_buf +
2938				       (cur_console->xsize*i),
2939				       cur_console->xsize * sizeof(u_short));
2940				ptr += cur_console->xsize;
2941				if (ptr + cur_console->xsize >
2942				    cur_console->history +
2943				    cur_console->history_size)
2944				    ptr = cur_console->history;
2945			    }
2946			    cur_console->status &= ~BUFFER_SAVED;
2947			    cur_console->history_head=cur_console->history_save;
2948			    cur_console->status |= CURSOR_ENABLED;
2949			    mark_all(cur_console);
2950			}
2951			scstart(VIRTUAL_TTY(get_scr_num()));
2952		    }
2953		    else
2954			cur_console->status |= SLKED;
2955		    update_leds(cur_console->status);
2956		}
2957		break;
2958	    case ALK:
2959		if (!alkcnt) {
2960		    alkcnt++;
2961		    if (cur_console->status & ALKED)
2962			cur_console->status &= ~ALKED;
2963		    else
2964			cur_console->status |= ALKED;
2965		    update_leds(cur_console->status);
2966		}
2967		break;
2968
2969	    /* NON-LOCKING KEYS */
2970	    case NOP:
2971		break;
2972	    case SPSC:
2973#ifdef SC_SPLASH_SCREEN
2974		toggle_splash_screen(cur_console);
2975#endif
2976		break;
2977	    case RBT:
2978		shutdown_nice();
2979		break;
2980	    case SUSP:
2981#if NAPM > 0
2982		apm_suspend();
2983#endif
2984		break;
2985
2986	    case DBG:
2987#ifdef DDB          /* try to switch to console 0 */
2988		if (cur_console->smode.mode == VT_AUTO &&
2989		    console[0]->smode.mode == VT_AUTO)
2990		    switch_scr(cur_console, 0);
2991		Debugger("manual escape to debugger");
2992#else
2993		printf("No debugger in kernel\n");
2994#endif
2995		break;
2996	    case LSH:
2997		shfts |= 1;
2998		break;
2999	    case RSH:
3000		shfts |= 2;
3001		break;
3002	    case LCTR:
3003		ctls |= 1;
3004		break;
3005	    case RCTR:
3006		ctls |= 2;
3007		break;
3008	    case LALT:
3009		alts |= 1;
3010		break;
3011	    case RALT:
3012		alts |= 2;
3013		break;
3014	    case ASH:
3015		agrs = 1;
3016		break;
3017	    case META:
3018		metas = 1;
3019		break;
3020	    case NEXT:
3021		{
3022		int next, this = get_scr_num();
3023		for (next = this+1; next != this; next = (next+1)%MAXCONS) {
3024		    struct tty *tp = VIRTUAL_TTY(next);
3025		    if (tp->t_state & TS_ISOPEN) {
3026			switch_scr(cur_console, next);
3027			break;
3028		    }
3029		}
3030		}
3031		break;
3032	    case BTAB:
3033		return(BKEY);
3034	    default:
3035		if (action >= F_SCR && action <= L_SCR) {
3036		    switch_scr(cur_console, action - F_SCR);
3037		    break;
3038		}
3039		if (action >= F_FN && action <= L_FN)
3040		    action |= FKEY;
3041		return(action);
3042	    }
3043	}
3044	else {
3045	    if (metas)
3046		action |= MKEY;
3047	    return(action);
3048	}
3049    }
3050    goto next_code;
3051}
3052
3053int
3054scmmap(dev_t dev, int offset, int nprot)
3055{
3056    if (offset > 0x20000 - PAGE_SIZE)
3057	return -1;
3058    return i386_btop((VIDEOMEM + offset));
3059}
3060
3061/*
3062 * Calculate hardware attributes word using logical attributes mask and
3063 * hardware colors
3064 */
3065
3066static int
3067mask2attr(struct term_stat *term)
3068{
3069    int attr, mask = term->attr_mask;
3070
3071    if (mask & REVERSE_ATTR) {
3072	attr = ((mask & FOREGROUND_CHANGED) ?
3073		((term->cur_color & 0xF000) >> 4) :
3074		(term->rev_color & 0x0F00)) |
3075	       ((mask & BACKGROUND_CHANGED) ?
3076		((term->cur_color & 0x0F00) << 4) :
3077		(term->rev_color & 0xF000));
3078    } else
3079	attr = term->cur_color;
3080
3081    /* XXX: underline mapping for Hercules adapter can be better */
3082    if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
3083	attr ^= 0x0800;
3084    if (mask & BLINK_ATTR)
3085	attr ^= 0x8000;
3086
3087    return attr;
3088}
3089
3090static void
3091set_keyboard(int command, int data)
3092{
3093    int s;
3094    int c;
3095
3096    if (sc_kbdc == NULL)
3097	return;
3098
3099    /* prevent the timeout routine from polling the keyboard */
3100    if (!kbdc_lock(sc_kbdc, TRUE))
3101	return;
3102
3103    /* disable the keyboard and mouse interrupt */
3104    s = spltty();
3105    c = get_controller_command_byte(sc_kbdc);
3106    if ((c == -1)
3107	|| !set_controller_command_byte(sc_kbdc,
3108            kbdc_get_device_mask(sc_kbdc),
3109            KBD_ENABLE_KBD_PORT | KBD_DISABLE_KBD_INT
3110                | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
3111	/* CONTROLLER ERROR */
3112        kbdc_lock(sc_kbdc, FALSE);
3113	splx(s);
3114	return;
3115    }
3116    /*
3117     * Now that the keyboard controller is told not to generate
3118     * the keyboard and mouse interrupts, call `splx()' to allow
3119     * the other tty interrupts. The clock interrupt may also occur,
3120     * but the timeout routine (`scrn_timer()') will be blocked
3121     * by the lock flag set via `kbdc_lock()'
3122     */
3123    splx(s);
3124
3125    send_kbd_command_and_data(sc_kbdc, command, data);
3126
3127    /* restore the interrupts */
3128    if (!set_controller_command_byte(sc_kbdc,
3129            kbdc_get_device_mask(sc_kbdc),
3130	    c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
3131	/* CONTROLLER ERROR */
3132    }
3133    kbdc_lock(sc_kbdc, FALSE);
3134}
3135
3136static void
3137update_leds(int which)
3138{
3139    static u_char xlate_leds[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
3140
3141    /* replace CAPS led with ALTGR led for ALTGR keyboards */
3142    if (key_map.n_keys > ALTGR_OFFSET) {
3143	if (which & ALKED)
3144	    which |= CLKED;
3145	else
3146	    which &= ~CLKED;
3147    }
3148
3149    set_keyboard(KBDC_SET_LEDS, xlate_leds[which & LED_MASK]);
3150}
3151
3152void
3153set_mode(scr_stat *scp)
3154{
3155    char *modetable;
3156    char special_modetable[64];
3157
3158    if (scp != cur_console)
3159	return;
3160
3161    /* setup video hardware for the given mode */
3162    switch (scp->mode) {
3163    case M_VGA_M80x60:
3164	bcopyw(video_mode_ptr+(64*M_VGA_M80x25), &special_modetable, 64);
3165	goto special_80x60;
3166
3167    case M_VGA_C80x60:
3168	bcopyw(video_mode_ptr+(64*M_VGA_C80x25), &special_modetable, 64);
3169special_80x60:
3170	special_modetable[2]  = 0x08;
3171	special_modetable[19] = 0x47;
3172	goto special_480l;
3173
3174    case M_VGA_M80x30:
3175	bcopyw(video_mode_ptr+(64*M_VGA_M80x25), &special_modetable, 64);
3176	goto special_80x30;
3177
3178    case M_VGA_C80x30:
3179	bcopyw(video_mode_ptr+(64*M_VGA_C80x25), &special_modetable, 64);
3180special_80x30:
3181	special_modetable[19] = 0x4f;
3182special_480l:
3183	special_modetable[9] |= 0xc0;
3184	special_modetable[16] = 0x08;
3185	special_modetable[17] = 0x3e;
3186	special_modetable[26] = 0xea;
3187	special_modetable[28] = 0xdf;
3188	special_modetable[31] = 0xe7;
3189	special_modetable[32] = 0x04;
3190	modetable = special_modetable;
3191	goto setup_mode;
3192
3193    case M_ENH_B80x43:
3194	bcopyw(video_mode_ptr+(64*M_ENH_B80x25), &special_modetable, 64);
3195	goto special_80x43;
3196
3197    case M_ENH_C80x43:
3198	bcopyw(video_mode_ptr+(64*M_ENH_C80x25), &special_modetable, 64);
3199special_80x43:
3200	special_modetable[28] = 87;
3201	goto special_80x50;
3202
3203    case M_VGA_M80x50:
3204	bcopyw(video_mode_ptr+(64*M_VGA_M80x25), &special_modetable, 64);
3205	goto special_80x50;
3206
3207    case M_VGA_C80x50:
3208	bcopyw(video_mode_ptr+(64*M_VGA_C80x25), &special_modetable, 64);
3209special_80x50:
3210	special_modetable[2] = 8;
3211	special_modetable[19] = 7;
3212	modetable = special_modetable;
3213	goto setup_mode;
3214
3215    case M_VGA_C40x25: case M_VGA_C80x25:
3216    case M_VGA_M80x25:
3217    case M_B40x25:     case M_C40x25:
3218    case M_B80x25:     case M_C80x25:
3219    case M_ENH_B40x25: case M_ENH_C40x25:
3220    case M_ENH_B80x25: case M_ENH_C80x25:
3221
3222	modetable = video_mode_ptr + (scp->mode * 64);
3223setup_mode:
3224	set_vgaregs(modetable);
3225	scp->font_size = *(modetable + 2);
3226
3227	/* set font type (size) */
3228	if (scp->font_size < FONT_14) {
3229	    if (fonts_loaded & FONT_8)
3230		copy_font(LOAD, FONT_8, font_8);
3231	    outb(TSIDX, 0x03); outb(TSREG, 0x0A);   /* font 2 */
3232	} else if (scp->font_size >= FONT_16) {
3233	    if (fonts_loaded & FONT_16)
3234		copy_font(LOAD, FONT_16, font_16);
3235	    outb(TSIDX, 0x03); outb(TSREG, 0x00);   /* font 0 */
3236	} else {
3237	    if (fonts_loaded & FONT_14)
3238		copy_font(LOAD, FONT_14, font_14);
3239	    outb(TSIDX, 0x03); outb(TSREG, 0x05);   /* font 1 */
3240	}
3241	if (flags & CHAR_CURSOR)
3242	    set_destructive_cursor(scp);
3243	mark_all(scp);
3244	break;
3245
3246    case M_BG320:     case M_CG320:     case M_BG640:
3247    case M_CG320_D:   case M_CG640_E:
3248    case M_CG640x350: case M_ENH_CG640:
3249    case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
3250
3251	set_vgaregs(video_mode_ptr + (scp->mode * 64));
3252	scp->font_size = FONT_NONE;
3253	break;
3254
3255    default:
3256	/* call user defined function XXX */
3257	break;
3258    }
3259
3260    /* set border color for this (virtual) console */
3261    set_border(scp->border);
3262    return;
3263}
3264
3265void
3266set_border(u_char color)
3267{
3268    inb(crtc_addr+6);               /* reset flip-flop */
3269    outb(ATC, 0x11); outb(ATC, color);
3270    inb(crtc_addr+6);               /* reset flip-flop */
3271    outb(ATC, 0x20);                /* enable Palette */
3272}
3273
3274static void
3275set_vgaregs(char *modetable)
3276{
3277    int i, s = splhigh();
3278
3279    outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
3280    outb(TSIDX, 0x07); outb(TSREG, 0x00);   	/* unlock registers */
3281    for (i=0; i<4; i++) {           		/* program sequencer */
3282	outb(TSIDX, i+1);
3283	outb(TSREG, modetable[i+5]);
3284    }
3285    outb(MISC, modetable[9]);       		/* set dot-clock */
3286    outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
3287    outb(crtc_addr, 0x11);
3288    outb(crtc_addr+1, inb(crtc_addr+1) & 0x7F);
3289    for (i=0; i<25; i++) {          		/* program crtc */
3290	outb(crtc_addr, i);
3291	if (i == 14 || i == 15)     		/* no hardware cursor */
3292	    outb(crtc_addr+1, 0xff);
3293	else
3294	    outb(crtc_addr+1, modetable[i+10]);
3295    }
3296    inb(crtc_addr+6);           		/* reset flip-flop */
3297    for (i=0; i<20; i++) {          		/* program attribute ctrl */
3298	outb(ATC, i);
3299	outb(ATC, modetable[i+35]);
3300    }
3301    for (i=0; i<9; i++) {           		/* program graph data ctrl */
3302	outb(GDCIDX, i);
3303	outb(GDCREG, modetable[i+55]);
3304    }
3305    inb(crtc_addr+6);           		/* reset flip-flop */
3306    outb(ATC, 0x20);            		/* enable palette */
3307    splx(s);
3308}
3309
3310static void
3311set_font_mode()
3312{
3313    int s = splhigh();
3314
3315    /* setup vga for loading fonts (graphics plane mode) */
3316    inb(crtc_addr+6);           		/* reset flip-flop */
3317    outb(ATC, 0x10); outb(ATC, 0x01);
3318    inb(crtc_addr+6);               		/* reset flip-flop */
3319    outb(ATC, 0x20);            		/* enable palette */
3320
3321#if SLOW_VGA
3322    outb(TSIDX, 0x02); outb(TSREG, 0x04);
3323    outb(TSIDX, 0x04); outb(TSREG, 0x06);
3324    outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
3325    outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
3326    outb(GDCIDX, 0x06); outb(GDCREG, 0x05);
3327#else
3328    outw(TSIDX, 0x0402);
3329    outw(TSIDX, 0x0604);
3330    outw(GDCIDX, 0x0204);
3331    outw(GDCIDX, 0x0005);
3332    outw(GDCIDX, 0x0506);               /* addr = a0000, 64kb */
3333#endif
3334    splx(s);
3335}
3336
3337static void
3338set_normal_mode()
3339{
3340    char *modetable;
3341    int s = splhigh();
3342
3343    switch (cur_console->mode) {
3344    case M_VGA_M80x60:
3345    case M_VGA_M80x50:
3346    case M_VGA_M80x30:
3347	modetable = video_mode_ptr + (64*M_VGA_M80x25);
3348	break;
3349
3350    case M_VGA_C80x60:
3351    case M_VGA_C80x50:
3352    case M_VGA_C80x30:
3353	modetable = video_mode_ptr + (64*M_VGA_C80x25);
3354	break;
3355
3356    case M_ENH_B80x43:
3357	modetable = video_mode_ptr + (64*M_ENH_B80x25);
3358	break;
3359
3360    case M_ENH_C80x43:
3361	modetable = video_mode_ptr + (64*M_ENH_C80x25);
3362	break;
3363
3364    case M_VGA_C40x25: case M_VGA_C80x25:
3365    case M_VGA_M80x25:
3366    case M_B40x25:     case M_C40x25:
3367    case M_B80x25:     case M_C80x25:
3368    case M_ENH_B40x25: case M_ENH_C40x25:
3369    case M_ENH_B80x25: case M_ENH_C80x25:
3370
3371    case M_BG320:     case M_CG320:     case M_BG640:
3372    case M_CG320_D:   case M_CG640_E:
3373    case M_CG640x350: case M_ENH_CG640:
3374    case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
3375	modetable = video_mode_ptr + (cur_console->mode * 64);
3376
3377    default:
3378	modetable = video_mode_ptr + (64*M_VGA_C80x25);
3379    }
3380
3381    /* setup vga for normal operation mode again */
3382    inb(crtc_addr+6);           		/* reset flip-flop */
3383    outb(ATC, 0x10); outb(ATC, modetable[0x10+35]);
3384    inb(crtc_addr+6);               		/* reset flip-flop */
3385    outb(ATC, 0x20);            		/* enable palette */
3386#if SLOW_VGA
3387    outb(TSIDX, 0x02); outb(TSREG, modetable[0x02+4]);
3388    outb(TSIDX, 0x04); outb(TSREG, modetable[0x04+4]);
3389    outb(GDCIDX, 0x04); outb(GDCREG, modetable[0x04+55]);
3390    outb(GDCIDX, 0x05); outb(GDCREG, modetable[0x05+55]);
3391    outb(GDCIDX, 0x06); outb(GDCREG, modetable[0x06+55]);
3392    if (crtc_addr == MONO_BASE) {
3393	outb(GDCIDX, 0x06); outb(GDCREG,(modetable[0x06+55] & 0x03) | 0x08);
3394    }
3395    else {
3396	outb(GDCIDX, 0x06); outb(GDCREG,(modetable[0x06+55] & 0x03) | 0x0c);
3397    }
3398#else
3399    outw(TSIDX, 0x0002 | (modetable[0x02+4]<<8));
3400    outw(TSIDX, 0x0004 | (modetable[0x04+4]<<8));
3401    outw(GDCIDX, 0x0004 | (modetable[0x04+55]<<8));
3402    outw(GDCIDX, 0x0005 | (modetable[0x05+55]<<8));
3403    if (crtc_addr == MONO_BASE)
3404        outw(GDCIDX, 0x0006 | (((modetable[0x06+55] & 0x03) | 0x08)<<8));
3405    else
3406        outw(GDCIDX, 0x0006 | (((modetable[0x06+55] & 0x03) | 0x0c)<<8));
3407#endif
3408    splx(s);
3409}
3410
3411void
3412copy_font(int operation, int font_type, char* font_image)
3413{
3414    int ch, line, segment, fontsize;
3415    u_char val;
3416
3417    /* dont mess with console we dont know video mode on */
3418    if (cur_console->status & UNKNOWN_MODE)
3419	return;
3420
3421    switch (font_type) {
3422    default:
3423    case FONT_8:
3424	segment = 0x8000;
3425	fontsize = 8;
3426	break;
3427    case FONT_14:
3428	segment = 0x4000;
3429	fontsize = 14;
3430	break;
3431    case FONT_16:
3432	segment = 0x0000;
3433	fontsize = 16;
3434	break;
3435    }
3436    outb(TSIDX, 0x01); val = inb(TSREG);        /* disable screen */
3437    outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
3438    set_font_mode();
3439    for (ch=0; ch < 256; ch++)
3440	for (line=0; line < fontsize; line++)
3441	if (operation)
3442	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line) =
3443		    font_image[(ch*fontsize)+line];
3444	else
3445	    font_image[(ch*fontsize)+line] =
3446	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line);
3447    set_normal_mode();
3448    outb(TSIDX, 0x01); outb(TSREG, val & 0xDF); /* enable screen */
3449}
3450
3451static void
3452set_destructive_cursor(scr_stat *scp)
3453{
3454    u_char cursor[32];
3455    caddr_t address;
3456    int i;
3457    char *font_buffer;
3458
3459
3460    if (scp->font_size < FONT_14) {
3461	font_buffer = font_8;
3462	address = (caddr_t)VIDEOMEM + 0x8000;
3463    }
3464    else if (scp->font_size >= FONT_16) {
3465	font_buffer = font_16;
3466	address = (caddr_t)VIDEOMEM;
3467    }
3468    else {
3469	font_buffer = font_14;
3470	address = (caddr_t)VIDEOMEM + 0x4000;
3471    }
3472
3473    if (scp->status & MOUSE_VISIBLE) {
3474	if ((scp->cursor_saveunder & 0xff) == 0xd0)
3475    	    bcopyw(&scp->mouse_cursor[0], cursor, scp->font_size);
3476	else if ((scp->cursor_saveunder & 0xff) == 0xd1)
3477    	    bcopyw(&scp->mouse_cursor[32], cursor, scp->font_size);
3478	else if ((scp->cursor_saveunder & 0xff) == 0xd2)
3479    	    bcopyw(&scp->mouse_cursor[64], cursor, scp->font_size);
3480	else if ((scp->cursor_saveunder & 0xff) == 0xd3)
3481    	    bcopyw(&scp->mouse_cursor[96], cursor, scp->font_size);
3482	else
3483	    bcopyw(font_buffer+((scp->cursor_saveunder & 0xff)*scp->font_size),
3484 	       	   cursor, scp->font_size);
3485    }
3486    else
3487    	bcopyw(font_buffer + ((scp->cursor_saveunder & 0xff) * scp->font_size),
3488 	       cursor, scp->font_size);
3489    for (i=0; i<32; i++)
3490	if ((i >= scp->cursor_start && i <= scp->cursor_end) ||
3491	    (scp->cursor_start >= scp->font_size && i == scp->font_size - 1))
3492	    cursor[i] |= 0xff;
3493#if 1
3494    while (!(inb(crtc_addr+6) & 0x08)) /* wait for vertical retrace */ ;
3495#endif
3496    set_font_mode();
3497    bcopy(cursor, (char *)pa_to_va(address) + DEAD_CHAR * 32, 32);
3498    set_normal_mode();
3499}
3500
3501static void
3502set_mouse_pos(scr_stat *scp)
3503{
3504    static int last_xpos = -1, last_ypos = -1;
3505    /*
3506     * the margins imposed here are not ideal, we loose
3507     * a couble of pixels on the borders..
3508     */
3509    if (scp->mouse_xpos < 0)
3510	scp->mouse_xpos = 0;
3511    if (scp->mouse_ypos < 0)
3512	scp->mouse_ypos = 0;
3513    if (scp->mouse_xpos > (scp->xsize*8)-2)
3514	scp->mouse_xpos = (scp->xsize*8)-2;
3515    if (scp->mouse_ypos > (scp->ysize*scp->font_size)-2)
3516	scp->mouse_ypos = (scp->ysize*scp->font_size)-2;
3517
3518    if (scp->status & UNKNOWN_MODE)
3519	return;
3520
3521    if (scp->mouse_xpos != last_xpos || scp->mouse_ypos != last_ypos) {
3522	scp->status |= MOUSE_MOVED;
3523
3524    	scp->mouse_pos = scp->scr_buf +
3525	    ((scp->mouse_ypos/scp->font_size)*scp->xsize + scp->mouse_xpos/8);
3526
3527	if ((scp->status & MOUSE_VISIBLE) && (scp->status & MOUSE_CUTTING)) {
3528	    u_short *ptr;
3529	    int i = 0;
3530
3531	    mark_for_update(scp, scp->mouse_cut_start - scp->scr_buf);
3532	    mark_for_update(scp, scp->mouse_cut_end - scp->scr_buf);
3533	    scp->mouse_cut_end = scp->mouse_pos;
3534	    for (ptr = (scp->mouse_cut_start > scp->mouse_cut_end
3535			? scp->mouse_cut_end : scp->mouse_cut_start);
3536		 ptr <= (scp->mouse_cut_start > scp->mouse_cut_end
3537			 ? scp->mouse_cut_start : scp->mouse_cut_end);
3538	    	 ptr++) {
3539	        cut_buffer[i++] = *ptr & 0xff;
3540	        if (((ptr - scp->scr_buf) % scp->xsize) == (scp->xsize - 1)) {
3541		    cut_buffer[i++] = '\n';
3542	        }
3543	    }
3544	    cut_buffer[i] = 0x00;
3545        }
3546    }
3547}
3548
3549static void
3550mouse_cut_start(scr_stat *scp)
3551{
3552    int i;
3553
3554    if (scp->status & MOUSE_VISIBLE) {
3555	if (scp->mouse_pos == scp->mouse_cut_start &&
3556	    scp->mouse_cut_start == scp->mouse_cut_end) {
3557	    cut_buffer[0] = 0x00;
3558	    remove_cutmarking(scp);
3559	}
3560	else {
3561	    scp->mouse_cut_start = scp->mouse_cut_end = scp->mouse_pos;
3562	    cut_buffer[0] = *scp->mouse_cut_start & 0xff;
3563	    cut_buffer[1] = 0x00;
3564	    scp->status |= MOUSE_CUTTING;
3565	}
3566    	mark_all(scp);
3567	/* delete all other screens cut markings */
3568	for (i=0; i<MAXCONS; i++) {
3569	    if (console[i] == NULL || console[i] == scp)
3570		continue;
3571	    remove_cutmarking(console[i]);
3572	}
3573    }
3574}
3575
3576static void
3577mouse_cut_end(scr_stat *scp)
3578{
3579    if (scp->status & MOUSE_VISIBLE) {
3580	scp->status &= ~MOUSE_CUTTING;
3581    }
3582}
3583
3584static void
3585mouse_paste(scr_stat *scp)
3586{
3587    if (scp->status & MOUSE_VISIBLE) {
3588	struct tty *tp;
3589	u_char *ptr = cut_buffer;
3590
3591	tp = VIRTUAL_TTY(get_scr_num());
3592	while (*ptr)
3593	    (*linesw[tp->t_line].l_rint)(scr_rmap[*ptr++], tp);
3594    }
3595}
3596
3597static void
3598draw_mouse_image(scr_stat *scp)
3599{
3600    caddr_t address;
3601    int i;
3602    char *font_buffer;
3603    u_short buffer[32];
3604    u_short xoffset, yoffset;
3605    u_short *crt_pos = Crtat + (scp->mouse_pos - scp->scr_buf);
3606    int font_size = scp->font_size;
3607
3608    if (font_size < FONT_14) {
3609	font_buffer = font_8;
3610	address = (caddr_t)VIDEOMEM + 0x8000;
3611    }
3612    else if (font_size >= FONT_16) {
3613	font_buffer = font_16;
3614	address = (caddr_t)VIDEOMEM;
3615    }
3616    else {
3617	font_buffer = font_14;
3618	address = (caddr_t)VIDEOMEM + 0x4000;
3619    }
3620    xoffset = scp->mouse_xpos % 8;
3621    yoffset = scp->mouse_ypos % font_size;
3622
3623    /* prepare mousepointer char's bitmaps */
3624    bcopyw(font_buffer + ((*(scp->mouse_pos) & 0xff) * font_size),
3625	   &scp->mouse_cursor[0], font_size);
3626    bcopyw(font_buffer + ((*(scp->mouse_pos+1) & 0xff) * font_size),
3627	   &scp->mouse_cursor[32], font_size);
3628    bcopyw(font_buffer + ((*(scp->mouse_pos+scp->xsize) & 0xff) * font_size),
3629	   &scp->mouse_cursor[64], font_size);
3630    bcopyw(font_buffer + ((*(scp->mouse_pos+scp->xsize+1) & 0xff) * font_size),
3631	   &scp->mouse_cursor[96], font_size);
3632    for (i=0; i<font_size; i++) {
3633	buffer[i] = scp->mouse_cursor[i]<<8 | scp->mouse_cursor[i+32];
3634	buffer[i+font_size]=scp->mouse_cursor[i+64]<<8|scp->mouse_cursor[i+96];
3635    }
3636
3637    /* now and-or in the mousepointer image */
3638    for (i=0; i<16; i++) {
3639	buffer[i+yoffset] =
3640	    ( buffer[i+yoffset] & ~(mouse_and_mask[i] >> xoffset))
3641	    | (mouse_or_mask[i] >> xoffset);
3642    }
3643    for (i=0; i<font_size; i++) {
3644	scp->mouse_cursor[i] = (buffer[i] & 0xff00) >> 8;
3645	scp->mouse_cursor[i+32] = buffer[i] & 0xff;
3646	scp->mouse_cursor[i+64] = (buffer[i+font_size] & 0xff00) >> 8;
3647	scp->mouse_cursor[i+96] = buffer[i+font_size] & 0xff;
3648    }
3649
3650    scp->mouse_oldpos = scp->mouse_pos;
3651
3652    /* wait for vertical retrace to avoid jitter on some videocards */
3653#if 1
3654    while (!(inb(crtc_addr+6) & 0x08)) /* idle */ ;
3655#endif
3656    set_font_mode();
3657    bcopy(scp->mouse_cursor, (char *)pa_to_va(address) + 0xd0 * 32, 128);
3658    set_normal_mode();
3659    *(crt_pos) = (*(scp->mouse_pos)&0xff00)|0xd0;
3660    *(crt_pos+scp->xsize) = (*(scp->mouse_pos+scp->xsize)&0xff00)|0xd2;
3661    if (scp->mouse_xpos < (scp->xsize-1)*8) {
3662    	*(crt_pos+1) = (*(scp->mouse_pos+1)&0xff00)|0xd1;
3663    	*(crt_pos+scp->xsize+1) = (*(scp->mouse_pos+scp->xsize+1)&0xff00)|0xd3;
3664    }
3665    mark_for_update(scp, scp->mouse_pos - scp->scr_buf);
3666    mark_for_update(scp, scp->mouse_pos + scp->xsize + 1 - scp->scr_buf);
3667}
3668
3669static void
3670remove_mouse_image(scr_stat *scp)
3671{
3672    u_short *crt_pos = Crtat + (scp->mouse_oldpos - scp->scr_buf);
3673
3674    *(crt_pos) = *(scp->mouse_oldpos);
3675    *(crt_pos+1) = *(scp->mouse_oldpos+1);
3676    *(crt_pos+scp->xsize) = *(scp->mouse_oldpos+scp->xsize);
3677    *(crt_pos+scp->xsize+1) = *(scp->mouse_oldpos+scp->xsize+1);
3678    mark_for_update(scp, scp->mouse_oldpos - scp->scr_buf);
3679    mark_for_update(scp, scp->mouse_oldpos + scp->xsize + 1 - scp->scr_buf);
3680}
3681
3682static void
3683draw_cutmarking(scr_stat *scp)
3684{
3685    u_short *ptr;
3686    u_short och, nch;
3687
3688    for (ptr=scp->scr_buf; ptr<=(scp->scr_buf+(scp->xsize*scp->ysize)); ptr++) {
3689	nch = och = *(Crtat + (ptr - scp->scr_buf));
3690	/* are we outside the selected area ? */
3691	if ( ptr < (scp->mouse_cut_start > scp->mouse_cut_end ?
3692	            scp->mouse_cut_end : scp->mouse_cut_start) ||
3693	     ptr > (scp->mouse_cut_start > scp->mouse_cut_end ?
3694	            scp->mouse_cut_start : scp->mouse_cut_end)) {
3695	    if (ptr != scp->cursor_pos)
3696		nch = (och & 0xff) | (*ptr & 0xff00);
3697	}
3698	else {
3699	    /* are we clear of the cursor image ? */
3700	    if (ptr != scp->cursor_pos)
3701		nch = (och & 0x88ff) | (*ptr & 0x7000)>>4 | (*ptr & 0x0700)<<4;
3702	    else {
3703		if (flags & CHAR_CURSOR)
3704		    nch = (och & 0x88ff)|(*ptr & 0x7000)>>4|(*ptr & 0x0700)<<4;
3705		else
3706		    if (!(flags & BLINK_CURSOR))
3707		        nch = (och & 0xff) | (*ptr & 0xff00);
3708	    }
3709	}
3710	if (nch != och)
3711	    *(Crtat + (ptr - scp->scr_buf)) = nch;
3712    }
3713}
3714
3715static void
3716remove_cutmarking(scr_stat *scp)
3717{
3718    scp->mouse_cut_start = scp->mouse_cut_end = NULL;
3719    scp->status &= ~MOUSE_CUTTING;
3720    mark_all(scp);
3721}
3722
3723static void
3724save_palette(void)
3725{
3726    int i;
3727
3728    outb(PALRADR, 0x00);
3729    for (i=0x00; i<0x300; i++)
3730	palette[i] = inb(PALDATA);
3731    inb(crtc_addr+6);           /* reset flip/flop */
3732}
3733
3734void
3735load_palette(char *palette)
3736{
3737    int i;
3738
3739    outb(PIXMASK, 0xFF);            /* no pixelmask */
3740    outb(PALWADR, 0x00);
3741    for (i=0x00; i<0x300; i++)
3742	 outb(PALDATA, palette[i]);
3743    inb(crtc_addr+6);           /* reset flip/flop */
3744    outb(ATC, 0x20);            /* enable palette */
3745}
3746
3747static void
3748do_bell(scr_stat *scp, int pitch, int duration)
3749{
3750    if (flags & VISUAL_BELL) {
3751	if (blink_in_progress)
3752	    return;
3753	blink_in_progress = 4;
3754	if (scp != cur_console)
3755	    blink_in_progress += 2;
3756	blink_screen(cur_console);
3757	timeout((timeout_func_t)blink_screen, cur_console, hz/10);
3758    } else {
3759	if (scp != cur_console)
3760	    pitch *= 2;
3761	sysbeep(pitch, duration);
3762    }
3763}
3764
3765static void
3766blink_screen(scr_stat *scp)
3767{
3768    if (blink_in_progress > 1) {
3769	if (blink_in_progress & 1)
3770	    fillw(kernel_default.std_color | scr_map[0x20],
3771		  Crtat, scp->xsize * scp->ysize);
3772	else
3773	    fillw(kernel_default.rev_color | scr_map[0x20],
3774		  Crtat, scp->xsize * scp->ysize);
3775	blink_in_progress--;
3776	timeout((timeout_func_t)blink_screen, scp, hz/10);
3777    }
3778    else {
3779	blink_in_progress = FALSE;
3780    	mark_all(scp);
3781	if (delayed_next_scr)
3782	    switch_scr(scp, delayed_next_scr - 1);
3783    }
3784}
3785
3786#ifdef SC_SPLASH_SCREEN
3787static void
3788toggle_splash_screen(scr_stat *scp)
3789{
3790    static int toggle = 0;
3791    static u_char save_mode;
3792    int s = splhigh();
3793
3794    if (toggle) {
3795	scp->mode = save_mode;
3796	scp->status &= ~UNKNOWN_MODE;
3797	set_mode(scp);
3798	load_palette(palette);
3799	toggle = 0;
3800    }
3801    else {
3802	save_mode = scp->mode;
3803	scp->mode = M_VGA_CG320;
3804	scp->status |= UNKNOWN_MODE;
3805	set_mode(scp);
3806	/* load image */
3807	toggle = 1;
3808    }
3809    splx(s);
3810}
3811#endif
3812#endif /* NSC */
3813