xref: /freebsd/sys/dev/syscons/syscons.c (revision 11afcc8f9f96d657b8e6f7547c02c1957331fc96)
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  *  $Id: syscons.c,v 1.271 1998/08/03 09:18:58 yokota Exp $
29  */
30 
31 #include "sc.h"
32 #include "apm.h"
33 #include "opt_ddb.h"
34 #include "opt_devfs.h"
35 #include "opt_syscons.h"
36 
37 #if NSC > 0
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/reboot.h>
41 #include <sys/conf.h>
42 #include <sys/proc.h>
43 #include <sys/signalvar.h>
44 #include <sys/tty.h>
45 #include <sys/kernel.h>
46 #include <sys/malloc.h>
47 #ifdef	DEVFS
48 #include <sys/devfsext.h>
49 #endif
50 
51 #include <machine/bootinfo.h>
52 #include <machine/clock.h>
53 #include <machine/cons.h>
54 #include <machine/console.h>
55 #include <machine/mouse.h>
56 #include <machine/md_var.h>
57 #include <machine/psl.h>
58 #include <machine/frame.h>
59 #include <machine/pc/display.h>
60 #include <machine/apm_bios.h>
61 #include <machine/random.h>
62 #include <machine/bootinfo.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 #if !defined(SC_MAX_HISTORY_SIZE)
80 #define SC_MAX_HISTORY_SIZE	(1000 * MAXCONS)
81 #endif
82 
83 #if !defined(SC_HISTORY_SIZE)
84 #define SC_HISTORY_SIZE		(ROW * 4)
85 #endif
86 
87 #if (SC_HISTORY_SIZE * MAXCONS) > SC_MAX_HISTORY_SIZE
88 #undef SC_MAX_HISTORY_SIZE
89 #define SC_MAX_HISTORY_SIZE	(SC_HISTORY_SIZE * MAXCONS)
90 #endif
91 
92 #if !defined(SC_MOUSE_CHAR)
93 #define SC_MOUSE_CHAR		(0xd0)
94 #endif
95 
96 #define COLD 0
97 #define WARM 1
98 
99 #define VESA_MODE(x)		((x) >= M_VESA_BASE)
100 
101 #define MODE_MAP_SIZE		(M_VGA_CG320 + 1)
102 #define MODE_PARAM_SIZE		64
103 
104 #define DEFAULT_BLANKTIME	(5*60)		/* 5 minutes */
105 #define MAX_BLANKTIME		(7*24*60*60)	/* 7 days!? */
106 
107 /* for backward compatibility */
108 #define OLD_CONS_MOUSECTL	_IOWR('c', 10, old_mouse_info_t)
109 
110 typedef struct old_mouse_data {
111     int x;
112     int y;
113     int buttons;
114 } old_mouse_data_t;
115 
116 typedef struct old_mouse_info {
117     int operation;
118     union {
119 	struct old_mouse_data data;
120 	struct mouse_mode mode;
121     } u;
122 } old_mouse_info_t;
123 
124 /* XXX use sc_bcopy where video memory is concerned */
125 extern void generic_bcopy(const void *, void *, size_t);
126 
127 static default_attr user_default = {
128     (FG_LIGHTGREY | BG_BLACK) << 8,
129     (FG_BLACK | BG_LIGHTGREY) << 8
130 };
131 
132 static default_attr kernel_default = {
133     (FG_WHITE | BG_BLACK) << 8,
134     (FG_BLACK | BG_LIGHTGREY) << 8
135 };
136 
137 static  scr_stat    	main_console;
138 static  scr_stat    	*console[MAXCONS];
139 #ifdef DEVFS
140 static	void		*sc_devfs_token[MAXCONS];
141 static	void		*sc_vga_devfs_token;
142 static	void		*sc_mouse_devfs_token;
143 static	void		*sc_console_devfs_token;
144 #endif
145 	scr_stat    	*cur_console;
146 static  scr_stat    	*new_scp, *old_scp;
147 static  term_stat   	kernel_console;
148 static  default_attr    *current_default;
149 static  int     	flags = 0;
150 static  int		sc_port = IO_KBD;
151 static  KBDC		sc_kbdc = NULL;
152 static  char        	init_done = COLD;
153 static  u_short		sc_buffer[ROW*COL];
154 static  char		shutdown_in_progress = FALSE;
155 static  char        	font_loading_in_progress = FALSE;
156 static  char        	switch_in_progress = FALSE;
157 static  char        	write_in_progress = FALSE;
158 static  char        	blink_in_progress = FALSE;
159 static  int        	blinkrate = 0;
160 	u_int       	crtc_addr = MONO_BASE;
161 	char		crtc_type = KD_MONO;
162 	char        	crtc_vga = FALSE;
163 static  u_char      	shfts = 0, ctls = 0, alts = 0, agrs = 0, metas = 0;
164 static  u_char		accents = 0;
165 static  u_char      	nlkcnt = 0, clkcnt = 0, slkcnt = 0, alkcnt = 0;
166 static  const u_int     n_fkey_tab = sizeof(fkey_tab) / sizeof(*fkey_tab);
167 static  int     	delayed_next_scr = FALSE;
168 static  long        	scrn_blank_time = 0;    /* screen saver timeout value */
169 	int     	scrn_blanked = 0;       /* screen saver active flag */
170 static  long		scrn_time_stamp;
171 static	int		saver_mode = CONS_LKM_SAVER; /* LKM/user saver */
172 static	int		run_scrn_saver = FALSE;	/* should run the saver? */
173 static	int		scrn_idle = FALSE;	/* about to run the saver */
174 	u_char      	scr_map[256];
175 	u_char      	scr_rmap[256];
176 	char        	*video_mode_ptr = NULL;
177 static	int		bios_video_mode;	/* video mode # set by BIOS */
178 	int     	fonts_loaded = 0
179 #ifdef STD8X16FONT
180 	| FONT_16
181 #endif
182 	;
183 
184 	char        	font_8[256*8];
185 	char		font_14[256*14];
186 #ifdef STD8X16FONT
187 extern
188 #endif
189 	unsigned char	font_16[256*16];
190 	char        	palette[256*3];
191 static  char		*mode_map[MODE_MAP_SIZE];
192 static  char		vgaregs[MODE_PARAM_SIZE];
193 static  char		vgaregs2[MODE_PARAM_SIZE];
194 static  int		rows_offset = 1;
195 static	char 		*cut_buffer;
196 static	int		cut_buffer_size;
197 static	int		mouse_level = 0;	/* sysmouse protocol level */
198 static	mousestatus_t	mouse_status = { 0, 0, 0, 0, 0, 0 };
199 static  u_short 	mouse_and_mask[16] = {
200 				0xc000, 0xe000, 0xf000, 0xf800,
201 				0xfc00, 0xfe00, 0xff00, 0xff80,
202 				0xfe00, 0x1e00, 0x1f00, 0x0f00,
203 				0x0f00, 0x0000, 0x0000, 0x0000
204 			};
205 static  u_short 	mouse_or_mask[16] = {
206 				0x0000, 0x4000, 0x6000, 0x7000,
207 				0x7800, 0x7c00, 0x7e00, 0x6800,
208 				0x0c00, 0x0c00, 0x0600, 0x0600,
209 				0x0000, 0x0000, 0x0000, 0x0000
210 			};
211 
212 static int		extra_history_size =
213 			    SC_MAX_HISTORY_SIZE - SC_HISTORY_SIZE * MAXCONS;
214 
215 static void    		none_saver(int blank) { }
216 static void    		(*current_saver)(int blank) = none_saver;
217 static void    		(*default_saver)(int blank) = none_saver;
218 int  			(*sc_user_ioctl)(dev_t dev, int cmd, caddr_t data,
219 					 int flag, struct proc *p) = NULL;
220 
221 static int		sticky_splash = FALSE;
222 
223 /* OS specific stuff */
224 #ifdef not_yet_done
225 #define VIRTUAL_TTY(x)  (sccons[x] = ttymalloc(sccons[x]))
226 struct  CONSOLE_TTY 	(sccons[MAXCONS] = ttymalloc(sccons[MAXCONS]))
227 struct  MOUSE_TTY 	(sccons[MAXCONS+1] = ttymalloc(sccons[MAXCONS+1]))
228 struct  tty         	*sccons[MAXCONS+2];
229 #else
230 #define VIRTUAL_TTY(x)  &sccons[x]
231 #define CONSOLE_TTY 	&sccons[MAXCONS]
232 #define MOUSE_TTY 	&sccons[MAXCONS+1]
233 static struct tty     	sccons[MAXCONS+2];
234 #endif
235 #define SC_MOUSE 	128
236 #define SC_CONSOLE	255
237 #define MONO_BUF    	pa_to_va(0xB0000)
238 #define CGA_BUF     	pa_to_va(0xB8000)
239 u_short         	*Crtat;
240 static const int	nsccons = MAXCONS+2;
241 
242 #define WRAPHIST(scp, pointer, offset)\
243     ((scp->history) + ((((pointer) - (scp->history)) + (scp->history_size)\
244     + (offset)) % (scp->history_size)))
245 #define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
246 
247 /* this should really be in `rtc.h' */
248 #define RTC_EQUIPMENT		0x14
249 
250 /* prototypes */
251 static int scattach(struct isa_device *dev);
252 static int scparam(struct tty *tp, struct termios *t);
253 static int scprobe(struct isa_device *dev);
254 static int scvidprobe(int unit, int flags);
255 static int sckbdprobe(int unit, int flags);
256 static void scstart(struct tty *tp);
257 static void scmousestart(struct tty *tp);
258 static void scinit(void);
259 static void scshutdown(int howto, void *arg);
260 static void map_mode_table(char *map[], char *table, int max);
261 static int map_mode_num(int mode);
262 static char *get_mode_param(scr_stat *scp, int mode);
263 static u_int scgetc(u_int flags);
264 #define SCGETC_CN	1
265 #define SCGETC_NONBLOCK	2
266 static void sccnupdate(scr_stat *scp);
267 static scr_stat *get_scr_stat(dev_t dev);
268 static scr_stat *alloc_scp(void);
269 static void init_scp(scr_stat *scp);
270 static void sc_bcopy(scr_stat *scp, u_short *p, int from, int to, int mark);
271 static int get_scr_num(void);
272 static timeout_t scrn_timer;
273 static void scrn_update(scr_stat *scp, int show_cursor);
274 static void stop_scrn_saver(void (*saver)(int));
275 static int wait_scrn_saver_stop(void);
276 static void clear_screen(scr_stat *scp);
277 static int switch_scr(scr_stat *scp, u_int next_scr);
278 static void exchange_scr(void);
279 static void move_crsr(scr_stat *scp, int x, int y);
280 static void scan_esc(scr_stat *scp, u_char c);
281 static void draw_cursor_image(scr_stat *scp);
282 static void remove_cursor_image(scr_stat *scp);
283 static void ansi_put(scr_stat *scp, u_char *buf, int len);
284 static u_char *get_fstr(u_int c, u_int *len);
285 static void history_to_screen(scr_stat *scp);
286 static int history_up_line(scr_stat *scp);
287 static int history_down_line(scr_stat *scp);
288 static int mask2attr(struct term_stat *term);
289 static void set_keyboard(int command, int data);
290 static void update_leds(int which);
291 static void set_vgaregs(char *modetable);
292 static void read_vgaregs(char *buf);
293 #define COMP_IDENTICAL	0
294 #define COMP_SIMILAR	1
295 #define COMP_DIFFERENT	2
296 static int comp_vgaregs(u_char *buf1, u_char *buf2);
297 static void dump_vgaregs(u_char *buf);
298 #define PARAM_BUFSIZE	6
299 static void set_font_mode(u_char *buf);
300 static void set_normal_mode(u_char *buf);
301 static void set_destructive_cursor(scr_stat *scp);
302 static void set_mouse_pos(scr_stat *scp);
303 static int skip_spc_right(scr_stat *scp, u_short *p);
304 static int skip_spc_left(scr_stat *scp, u_short *p);
305 static void mouse_cut(scr_stat *scp);
306 static void mouse_cut_start(scr_stat *scp);
307 static void mouse_cut_end(scr_stat *scp);
308 static void mouse_cut_word(scr_stat *scp);
309 static void mouse_cut_line(scr_stat *scp);
310 static void mouse_cut_extend(scr_stat *scp);
311 static void mouse_paste(scr_stat *scp);
312 static void draw_mouse_image(scr_stat *scp);
313 static void remove_mouse_image(scr_stat *scp);
314 static void draw_cutmarking(scr_stat *scp);
315 static void remove_cutmarking(scr_stat *scp);
316 static void save_palette(void);
317 static void do_bell(scr_stat *scp, int pitch, int duration);
318 static timeout_t blink_screen;
319 #ifdef SC_SPLASH_SCREEN
320 static void scsplash_init(void);
321 static void scsplash(int show);
322 #define scsplash_stick(stick)		(sticky_splash = (stick))
323 #else
324 #define scsplash_stick(stick)
325 #endif
326 
327 struct  isa_driver scdriver = {
328     scprobe, scattach, "sc", 1
329 };
330 
331 static	d_open_t	scopen;
332 static	d_close_t	scclose;
333 static	d_read_t	scread;
334 static	d_write_t	scwrite;
335 static	d_ioctl_t	scioctl;
336 static	d_devtotty_t	scdevtotty;
337 static	d_mmap_t	scmmap;
338 
339 #define CDEV_MAJOR 12
340 static	struct cdevsw	scdevsw = {
341 	scopen,		scclose,	scread,		scwrite,
342 	scioctl,	nullstop,	noreset,	scdevtotty,
343 	ttpoll,		scmmap,		nostrategy,	"sc",	NULL,	-1 };
344 
345 /*
346  * These functions need to be before calls to them so they can be inlined.
347  */
348 static void
349 draw_cursor_image(scr_stat *scp)
350 {
351     u_short cursor_image, *ptr = Crtat + (scp->cursor_pos - scp->scr_buf);
352     u_short prev_image;
353 
354     if (VESA_MODE(scp->mode)) {
355 	sc_bcopy(scp, scp->scr_buf, scp->cursor_pos - scp->scr_buf,
356 	  scp->cursor_pos - scp->scr_buf, 1);
357 	return;
358     }
359 
360     /* do we have a destructive cursor ? */
361     if (flags & CHAR_CURSOR) {
362 	prev_image = scp->cursor_saveunder;
363 	cursor_image = *ptr & 0x00ff;
364 	if (cursor_image == DEAD_CHAR)
365 	    cursor_image = prev_image & 0x00ff;
366 	cursor_image |= *(scp->cursor_pos) & 0xff00;
367 	scp->cursor_saveunder = cursor_image;
368 	/* update the cursor bitmap if the char under the cursor has changed */
369 	if (prev_image != cursor_image)
370 	    set_destructive_cursor(scp);
371 	/* modify cursor_image */
372 	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
373 	    /*
374 	     * When the mouse pointer is at the same position as the cursor,
375 	     * the cursor bitmap needs to be updated even if the char under
376 	     * the cursor hasn't changed, because the mouse pionter may
377 	     * have moved by a few dots within the cursor cel.
378 	     */
379 	    if ((prev_image == cursor_image)
380 		    && (cursor_image != *(scp->cursor_pos)))
381 	        set_destructive_cursor(scp);
382 	    cursor_image &= 0xff00;
383 	    cursor_image |= DEAD_CHAR;
384 	}
385     } else {
386 	cursor_image = (*(ptr) & 0x00ff) | *(scp->cursor_pos) & 0xff00;
387 	scp->cursor_saveunder = cursor_image;
388 	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
389 	    if ((cursor_image & 0x7000) == 0x7000) {
390 		cursor_image &= 0x8fff;
391 		if(!(cursor_image & 0x0700))
392 		    cursor_image |= 0x0700;
393 	    } else {
394 		cursor_image |= 0x7000;
395 		if ((cursor_image & 0x0700) == 0x0700)
396 		    cursor_image &= 0xf0ff;
397 	    }
398 	}
399     }
400     *ptr = cursor_image;
401 }
402 
403 static void
404 remove_cursor_image(scr_stat *scp)
405 {
406     if (VESA_MODE(scp->mode))
407 	sc_bcopy(scp, scp->scr_buf, scp->cursor_oldpos - scp->scr_buf,
408 	  scp->cursor_oldpos - scp->scr_buf, 0);
409     else
410 	*(Crtat + (scp->cursor_oldpos - scp->scr_buf)) = scp->cursor_saveunder;
411 }
412 
413 static void
414 move_crsr(scr_stat *scp, int x, int y)
415 {
416     if (x < 0)
417 	x = 0;
418     if (y < 0)
419 	y = 0;
420     if (x >= scp->xsize)
421 	x = scp->xsize-1;
422     if (y >= scp->ysize)
423 	y = scp->ysize-1;
424     scp->xpos = x;
425     scp->ypos = y;
426     scp->cursor_pos = scp->scr_buf + scp->ypos * scp->xsize + scp->xpos;
427 }
428 
429 static int
430 scprobe(struct isa_device *dev)
431 {
432     if (!scvidprobe(dev->id_unit, dev->id_flags)) {
433 	if (bootverbose)
434 	    printf("sc%d: no video adapter is found.\n", dev->id_unit);
435 	return (0);
436     }
437 
438     sc_port = dev->id_iobase;
439     if (sckbdprobe(dev->id_unit, dev->id_flags))
440 	return (IO_KBDSIZE);
441     else
442         return ((dev->id_flags & DETECT_KBD) ? 0 : IO_KBDSIZE);
443 }
444 
445 /* probe video adapters, return TRUE if found */
446 static int
447 scvidprobe(int unit, int flags)
448 {
449     /*
450      * XXX don't try to `printf' anything here, the console may not have
451      * been configured yet.
452      */
453     u_short volatile *cp;
454     u_short was;
455     u_int pa;
456     u_int segoff;
457 
458     /* do this test only once */
459     if (init_done != COLD)
460 	return (Crtat != 0);
461 
462     /*
463      * Finish defaulting crtc variables for a mono screen.  Crtat is a
464      * bogus common variable so that it can be shared with pcvt, so it
465      * can't be statically initialized.  XXX.
466      */
467     Crtat = (u_short *)MONO_BUF;
468     crtc_type = KD_MONO;
469     /* If CGA memory seems to work, switch to color.  */
470     cp = (u_short *)CGA_BUF;
471     was = *cp;
472     *cp = (u_short) 0xA55A;
473     bios_video_mode = *(u_char *)pa_to_va(0x449);
474     if (bootinfo.bi_vesa == 0x102) {
475 	bios_video_mode = bootinfo.bi_vesa;
476 	Crtat  = (u_short *)pa_to_va(0xA0000);
477 	crtc_addr = COLOR_BASE;
478 	crtc_type = KD_VGA;
479         bzero(Crtat, 800*600/8);
480     } else if (*cp == 0xA55A) {
481 	Crtat = (u_short *)CGA_BUF;
482 	crtc_addr = COLOR_BASE;
483 	crtc_type = KD_CGA;
484     } else {
485         cp = Crtat;
486 	was = *cp;
487 	*cp = (u_short) 0xA55A;
488 	if (*cp != 0xA55A) {
489 	    /* no screen at all, bail out */
490 	    Crtat = 0;
491 	    return FALSE;
492 	}
493     }
494     *cp = was;
495 
496     if (!VESA_MODE(bios_video_mode)) {
497 	/*
498 	 * Check rtc and BIOS date area.
499 	 * XXX: don't use BIOSDATA_EQUIPMENT, it is not a dead copy
500 	 * of RTC_EQUIPMENT. The bit 4 and 5 of the ETC_EQUIPMENT are
501 	 * zeros for EGA and VGA. However, the EGA/VGA BIOS will set
502 	 * these bits in BIOSDATA_EQUIPMENT according to the monitor
503 	 * type detected.
504 	 */
505 	switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) {	/* bit 4 and 5 */
506 	case 0: /* EGA/VGA, or nothing */
507 	    crtc_type = KD_EGA;
508 	    /* the color adapter may be in the 40x25 mode... XXX */
509 	    break;
510 	case 1: /* CGA 40x25 */
511 	    /* switch to the 80x25 mode? XXX */
512 	    /* FALL THROUGH */
513 	case 2: /* CGA 80x25 */
514 	    /* `crtc_type' has already been set... */
515 	    /* crtc_type = KD_CGA; */
516 	    break;
517 	case 3: /* MDA */
518 	    /* `crtc_type' has already been set... */
519 	    /* crtc_type = KD_MONO; */
520 	    break;
521 	}
522 
523 	/* is this a VGA or higher ? */
524 	outb(crtc_addr, 7);
525 	if (inb(crtc_addr) == 7) {
526 
527 	    crtc_type = KD_VGA;
528 	    crtc_vga = TRUE;
529 	    read_vgaregs(vgaregs);
530 
531 	    /* Get the BIOS video mode pointer */
532 	    segoff = *(u_int *)pa_to_va(0x4a8);
533 	    pa = ((segoff & 0xffff0000) >> 12) + (segoff & 0xffff);
534 	    if (ISMAPPED(pa, sizeof(u_int))) {
535 		segoff = *(u_int *)pa_to_va(pa);
536 		pa = ((segoff & 0xffff0000) >> 12) + (segoff & 0xffff);
537 		if (ISMAPPED(pa, MODE_PARAM_SIZE))
538 		    video_mode_ptr = (char *)pa_to_va(pa);
539 	    }
540 	}
541     }
542 
543     return TRUE;
544 }
545 
546 /* probe the keyboard, return TRUE if found */
547 static int
548 sckbdprobe(int unit, int flags)
549 {
550     int codeset;
551     int c = -1;
552     int m;
553     int res, id;
554 
555     sc_kbdc = kbdc_open(sc_port);
556 
557     if (!kbdc_lock(sc_kbdc, TRUE)) {
558 	/* driver error? */
559 	printf("sc%d: unable to lock the controller.\n", unit);
560         return ((flags & DETECT_KBD) ? FALSE : TRUE);
561     }
562 
563     /* discard anything left after UserConfig */
564     empty_both_buffers(sc_kbdc, 10);
565 
566     /* save the current keyboard controller command byte */
567     m = kbdc_get_device_mask(sc_kbdc) & ~KBD_KBD_CONTROL_BITS;
568     c = get_controller_command_byte(sc_kbdc);
569     if (c == -1) {
570 	/* CONTROLLER ERROR */
571 	printf("sc%d: unable to get the current command byte value.\n", unit);
572 	goto fail;
573     }
574     if (bootverbose)
575 	printf("sc%d: the current keyboard controller command byte %04x\n",
576 	    unit, c);
577 #if 0
578     /* override the keyboard lock switch */
579     c |= KBD_OVERRIDE_KBD_LOCK;
580 #endif
581 
582     /*
583      * The keyboard may have been screwed up by the boot block.
584      * We may just be able to recover from error by testing the controller
585      * and the keyboard port. The controller command byte needs to be saved
586      * before this recovery operation, as some controllers seem to set
587      * the command byte to particular values.
588      */
589     test_controller(sc_kbdc);
590     test_kbd_port(sc_kbdc);
591 
592     /* enable the keyboard port, but disable the keyboard intr. */
593     if (!set_controller_command_byte(sc_kbdc,
594             KBD_KBD_CONTROL_BITS,
595             KBD_ENABLE_KBD_PORT | KBD_DISABLE_KBD_INT)) {
596 	/* CONTROLLER ERROR
597 	 * there is very little we can do...
598 	 */
599 	printf("sc%d: unable to set the command byte.\n", unit);
600 	goto fail;
601      }
602 
603      /*
604       * Check if we have an XT keyboard before we attempt to reset it.
605       * The procedure assumes that the keyboard and the controller have
606       * been set up properly by BIOS and have not been messed up
607       * during the boot process.
608       */
609      codeset = -1;
610      if (flags & XT_KEYBD)
611 	 /* the user says there is a XT keyboard */
612 	 codeset = 1;
613 #ifdef DETECT_XT_KEYBOARD
614      else if ((c & KBD_TRANSLATION) == 0) {
615 	 /* SET_SCANCODE_SET is not always supported; ignore error */
616 	 if (send_kbd_command_and_data(sc_kbdc, KBDC_SET_SCANCODE_SET, 0)
617 		 == KBD_ACK)
618 	     codeset = read_kbd_data(sc_kbdc);
619      }
620      if (bootverbose)
621          printf("sc%d: keyboard scancode set %d\n", unit, codeset);
622 #endif /* DETECT_XT_KEYBOARD */
623 
624     if (flags & KBD_NORESET) {
625         write_kbd_command(sc_kbdc, KBDC_ECHO);
626         if (read_kbd_data(sc_kbdc) != KBD_ECHO) {
627             empty_both_buffers(sc_kbdc, 10);
628             test_controller(sc_kbdc);
629             test_kbd_port(sc_kbdc);
630             if (bootverbose)
631                 printf("sc%d: failed to get response from the keyboard.\n",
632 		    unit);
633 	    goto fail;
634 	}
635     } else {
636         /* reset keyboard hardware */
637         if (!reset_kbd(sc_kbdc)) {
638             /* KEYBOARD ERROR
639              * Keyboard reset may fail either because the keyboard doen't
640              * exist, or because the keyboard doesn't pass the self-test,
641              * or the keyboard controller on the motherboard and the keyboard
642              * somehow fail to shake hands. It is just possible, particularly
643              * in the last case, that the keyoard controller may be left
644              * in a hung state. test_controller() and test_kbd_port() appear
645              * to bring the keyboard controller back (I don't know why and
646              * how, though.)
647              */
648             empty_both_buffers(sc_kbdc, 10);
649             test_controller(sc_kbdc);
650             test_kbd_port(sc_kbdc);
651             /* We could disable the keyboard port and interrupt... but,
652              * the keyboard may still exist (see above).
653              */
654             if (bootverbose)
655                 printf("sc%d: failed to reset the keyboard.\n", unit);
656             goto fail;
657         }
658     }
659 
660     /*
661      * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
662      * such as those on the IBM ThinkPad laptop computers can be used
663      * with the standard console driver.
664      */
665     if (codeset == 1) {
666 	if (send_kbd_command_and_data(
667 	        sc_kbdc, KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
668 	    /* XT kbd doesn't need scan code translation */
669 	    c &= ~KBD_TRANSLATION;
670 	} else {
671 	    /* KEYBOARD ERROR
672 	     * The XT kbd isn't usable unless the proper scan code set
673 	     * is selected.
674 	     */
675 	    printf("sc%d: unable to set the XT keyboard mode.\n", unit);
676 	    goto fail;
677 	}
678     }
679     /* enable the keyboard port and intr. */
680     if (!set_controller_command_byte(sc_kbdc,
681             KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
682 	    (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
683 	        | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
684 	/* CONTROLLER ERROR
685 	 * This is serious; we are left with the disabled keyboard intr.
686 	 */
687 	printf("sc%d: unable to enable the keyboard port and intr.\n", unit);
688 	goto fail;
689     }
690 
691     /* Get the ID of the keyboard, if any */
692     empty_kbd_buffer(sc_kbdc, 5);
693     res = send_kbd_command(sc_kbdc, KBDC_SEND_DEV_ID);
694     if (res == KBD_ACK) {
695 	/* 10ms delay */
696 	DELAY(10000);
697 	id = (read_kbd_data(sc_kbdc) << 8) | read_kbd_data(sc_kbdc);
698 	if (bootverbose)
699 	    printf("sc%d: keyboard device ID: %04x\n", unit, id);
700     }
701 
702     kbdc_set_device_mask(sc_kbdc, m | KBD_KBD_CONTROL_BITS),
703     kbdc_lock(sc_kbdc, FALSE);
704     return TRUE;
705 
706 fail:
707     if (c != -1)
708         /* try to restore the command byte as before, if possible */
709         set_controller_command_byte(sc_kbdc, 0xff, c);
710     kbdc_set_device_mask(sc_kbdc,
711         (flags & DETECT_KBD) ? m : m | KBD_KBD_CONTROL_BITS);
712     kbdc_lock(sc_kbdc, FALSE);
713     return FALSE;
714 }
715 
716 #if NAPM > 0
717 static int
718 scresume(void *dummy)
719 {
720 	shfts = ctls = alts = agrs = metas = accents = 0;
721 	return 0;
722 }
723 #endif
724 
725 static int
726 scattach(struct isa_device *dev)
727 {
728     scr_stat *scp;
729     dev_t cdev = makedev(CDEV_MAJOR, 0);
730     char *p;
731 #ifdef DEVFS
732     int vc;
733 #endif
734 
735     scinit();
736     flags = dev->id_flags;
737     if (crtc_type != KD_VGA || VESA_MODE(bios_video_mode))
738 	flags &= ~CHAR_CURSOR;
739 
740     scp = console[0];
741 
742     if (crtc_type == KD_VGA) {
743 	cut_buffer_size = scp->xsize * scp->ysize + 1;
744     	cut_buffer = (char *)malloc(cut_buffer_size, M_DEVBUF, M_NOWAIT);
745 	if (cut_buffer != NULL)
746 	    cut_buffer[0] = '\0';
747     }
748 
749     scp->scr_buf = (u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
750 				     M_DEVBUF, M_NOWAIT);
751 
752     /* copy temporary buffer to final buffer */
753     bcopy(sc_buffer, scp->scr_buf, scp->xsize * scp->ysize * sizeof(u_short));
754 
755     scp->cursor_pos = scp->cursor_oldpos =
756 	scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
757     scp->mouse_pos = scp->mouse_oldpos =
758 	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
759 	    		scp->mouse_xpos/8);
760 
761     /* initialize history buffer & pointers */
762     scp->history_head = scp->history_pos =
763 	(u_short *)malloc(scp->history_size*sizeof(u_short),
764 			  M_DEVBUF, M_NOWAIT);
765     if (scp->history_head != NULL)
766         bzero(scp->history_head, scp->history_size*sizeof(u_short));
767     scp->history = scp->history_head;
768 
769     /* initialize cursor stuff */
770     if (!(scp->status & UNKNOWN_MODE))
771     	draw_cursor_image(scp);
772 
773     /* get screen update going */
774     scrn_timer((void *)TRUE);
775 
776     update_leds(scp->status);
777 
778     if ((crtc_type == KD_VGA) && bootverbose) {
779         printf("sc%d: BIOS video mode:%d\n", dev->id_unit, bios_video_mode);
780         printf("sc%d: VGA registers upon power-up\n", dev->id_unit);
781         dump_vgaregs(vgaregs);
782         printf("sc%d: video mode:%d\n", dev->id_unit, scp->mode);
783         printf("sc%d: VGA registers in BIOS for mode:%d\n",
784 		dev->id_unit, scp->mode);
785         dump_vgaregs(vgaregs2);
786 	p = get_mode_param(scp, scp->mode);
787         if (p != NULL) {
788             printf("sc%d: VGA registers to be used for mode:%d\n",
789 		dev->id_unit, scp->mode);
790             dump_vgaregs(p);
791         }
792         printf("sc%d: rows_offset:%d\n", dev->id_unit, rows_offset);
793     }
794     if ((crtc_type == KD_VGA) && !VESA_MODE(bios_video_mode)
795 	&& (video_mode_ptr == NULL))
796         printf("sc%d: WARNING: video mode switching is only partially supported\n",
797 	        dev->id_unit);
798 
799     printf("sc%d: ", dev->id_unit);
800     switch(crtc_type) {
801     case KD_VGA:
802 	if (VESA_MODE(bios_video_mode))
803 	    printf("Graphics display (VESA mode = 0x%x)", bios_video_mode);
804 	else if (crtc_addr == MONO_BASE)
805 	    printf("VGA mono");
806 	else
807 	    printf("VGA color");
808 	break;
809     case KD_EGA:
810 	if (crtc_addr == MONO_BASE)
811 	    printf("EGA mono");
812 	else
813 	    printf("EGA color");
814 	break;
815     case KD_CGA:
816 	printf("CGA");
817 	break;
818     case KD_MONO:
819     case KD_HERCULES:
820     default:
821 	printf("MDA/hercules");
822 	break;
823     }
824     printf(" <%d virtual consoles, flags=0x%x>\n", MAXCONS, flags);
825 
826 #if NAPM > 0
827     scp->r_hook.ah_fun = scresume;
828     scp->r_hook.ah_arg = NULL;
829     scp->r_hook.ah_name = "system keyboard";
830     scp->r_hook.ah_order = APM_MID_ORDER;
831     apm_hook_establish(APM_HOOK_RESUME , &scp->r_hook);
832 #endif
833 
834     at_shutdown(scshutdown, NULL, SHUTDOWN_PRE_SYNC);
835 
836     cdevsw_add(&cdev, &scdevsw, NULL);
837 
838 #ifdef DEVFS
839     for (vc = 0; vc < MAXCONS; vc++)
840         sc_devfs_token[vc] = devfs_add_devswf(&scdevsw, vc, DV_CHR,
841 				UID_ROOT, GID_WHEEL, 0600, "ttyv%r", vc);
842     sc_vga_devfs_token = devfs_link(sc_devfs_token[0], "vga");
843     sc_mouse_devfs_token = devfs_add_devswf(&scdevsw, SC_MOUSE, DV_CHR,
844 				UID_ROOT, GID_WHEEL, 0600, "sysmouse");
845     sc_console_devfs_token = devfs_add_devswf(&scdevsw, SC_CONSOLE, DV_CHR,
846 				UID_ROOT, GID_WHEEL, 0600, "consolectl");
847 #endif
848     return 0;
849 }
850 
851 struct tty
852 *scdevtotty(dev_t dev)
853 {
854     int unit = minor(dev);
855 
856     if (init_done == COLD)
857 	return(NULL);
858     if (unit == SC_CONSOLE)
859 	return CONSOLE_TTY;
860     if (unit == SC_MOUSE)
861 	return MOUSE_TTY;
862     if (unit >= MAXCONS || unit < 0)
863 	return(NULL);
864     return VIRTUAL_TTY(unit);
865 }
866 
867 int
868 scopen(dev_t dev, int flag, int mode, struct proc *p)
869 {
870     struct tty *tp = scdevtotty(dev);
871 
872     if (!tp)
873 	return(ENXIO);
874 
875     tp->t_oproc = (minor(dev) == SC_MOUSE) ? scmousestart : scstart;
876     tp->t_param = scparam;
877     tp->t_dev = dev;
878     if (!(tp->t_state & TS_ISOPEN)) {
879 	ttychars(tp);
880         /* Use the current setting of the <-- key as default VERASE. */
881         /* If the Delete key is preferable, an stty is necessary     */
882         tp->t_cc[VERASE] = key_map.key[0x0e].map[0];
883 	tp->t_iflag = TTYDEF_IFLAG;
884 	tp->t_oflag = TTYDEF_OFLAG;
885 	tp->t_cflag = TTYDEF_CFLAG;
886 	tp->t_lflag = TTYDEF_LFLAG;
887 	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
888 	scparam(tp, &tp->t_termios);
889 	ttsetwater(tp);
890 	(*linesw[tp->t_line].l_modem)(tp, 1);
891     	if (minor(dev) == SC_MOUSE)
892 	    mouse_level = 0;		/* XXX */
893     }
894     else
895 	if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
896 	    return(EBUSY);
897     if (minor(dev) < MAXCONS && !console[minor(dev)]) {
898 	console[minor(dev)] = alloc_scp();
899     }
900     if (minor(dev)<MAXCONS && !tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
901 	tp->t_winsize.ws_col = console[minor(dev)]->xsize;
902 	tp->t_winsize.ws_row = console[minor(dev)]->ysize;
903     }
904     return ((*linesw[tp->t_line].l_open)(dev, tp));
905 }
906 
907 int
908 scclose(dev_t dev, int flag, int mode, struct proc *p)
909 {
910     struct tty *tp = scdevtotty(dev);
911     struct scr_stat *scp;
912 
913     if (!tp)
914 	return(ENXIO);
915     if (minor(dev) < MAXCONS) {
916 	scp = get_scr_stat(tp->t_dev);
917 	if (scp->status & SWITCH_WAIT_ACQ)
918 	    wakeup((caddr_t)&scp->smode);
919 #if not_yet_done
920 	if (scp == &main_console) {
921 	    scp->pid = 0;
922 	    scp->proc = NULL;
923 	    scp->smode.mode = VT_AUTO;
924 	}
925 	else {
926 	    free(scp->scr_buf, M_DEVBUF);
927 	    if (scp->history != NULL) {
928 		free(scp->history, M_DEVBUF);
929 		if (scp->history_size / scp->xsize
930 			> imax(SC_HISTORY_SIZE, scp->ysize))
931 		    extra_history_size += scp->history_size / scp->xsize
932 			- imax(SC_HISTORY_SIZE, scp->ysize);
933 	    }
934 	    free(scp, M_DEVBUF);
935 	    console[minor(dev)] = NULL;
936 	}
937 #else
938 	scp->pid = 0;
939 	scp->proc = NULL;
940 	scp->smode.mode = VT_AUTO;
941 #endif
942     }
943     spltty();
944     (*linesw[tp->t_line].l_close)(tp, flag);
945     ttyclose(tp);
946     spl0();
947     return(0);
948 }
949 
950 int
951 scread(dev_t dev, struct uio *uio, int flag)
952 {
953     struct tty *tp = scdevtotty(dev);
954 
955     if (!tp)
956 	return(ENXIO);
957     return((*linesw[tp->t_line].l_read)(tp, uio, flag));
958 }
959 
960 int
961 scwrite(dev_t dev, struct uio *uio, int flag)
962 {
963     struct tty *tp = scdevtotty(dev);
964 
965     if (!tp)
966 	return(ENXIO);
967     return((*linesw[tp->t_line].l_write)(tp, uio, flag));
968 }
969 
970 void
971 scintr(int unit)
972 {
973     static struct tty *cur_tty;
974     int c, len;
975     u_char *cp;
976 
977     /*
978      * Loop while there is still input to get from the keyboard.
979      * I don't think this is nessesary, and it doesn't fix
980      * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
981      */
982     while ((c = scgetc(SCGETC_NONBLOCK)) != NOKEY) {
983 
984 	cur_tty = VIRTUAL_TTY(get_scr_num());
985 	if (!(cur_tty->t_state & TS_ISOPEN))
986 	    if (!((cur_tty = CONSOLE_TTY)->t_state & TS_ISOPEN))
987 		continue;
988 
989 	switch (c & 0xff00) {
990 	case 0x0000: /* normal key */
991 	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
992 	    break;
993 	case FKEY:  /* function key, return string */
994 	    if (cp = get_fstr((u_int)c, (u_int *)&len)) {
995 	    	while (len-- >  0)
996 		    (*linesw[cur_tty->t_line].l_rint)(*cp++ & 0xFF, cur_tty);
997 	    }
998 	    break;
999 	case MKEY:  /* meta is active, prepend ESC */
1000 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
1001 	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
1002 	    break;
1003 	case BKEY:  /* backtab fixed sequence (esc [ Z) */
1004 	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
1005 	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
1006 	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
1007 	    break;
1008 	}
1009     }
1010 
1011     if (cur_console->status & MOUSE_ENABLED) {
1012 	cur_console->status &= ~MOUSE_VISIBLE;
1013 	remove_mouse_image(cur_console);
1014     }
1015 }
1016 
1017 static int
1018 scparam(struct tty *tp, struct termios *t)
1019 {
1020     tp->t_ispeed = t->c_ispeed;
1021     tp->t_ospeed = t->c_ospeed;
1022     tp->t_cflag = t->c_cflag;
1023     return 0;
1024 }
1025 
1026 int
1027 scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
1028 {
1029     int error;
1030     u_int i;
1031     struct tty *tp;
1032     scr_stat *scp;
1033     u_short *usp;
1034     char *mp;
1035     int s;
1036 
1037     tp = scdevtotty(dev);
1038     if (!tp)
1039 	return ENXIO;
1040     scp = get_scr_stat(tp->t_dev);
1041 
1042     /* If there is a user_ioctl function call that first */
1043     if (sc_user_ioctl) {
1044 	if (error = (*sc_user_ioctl)(dev, cmd, data, flag, p))
1045 	    return error;
1046     }
1047 
1048     switch (cmd) {  		/* process console hardware related ioctl's */
1049 
1050     case GIO_ATTR:      	/* get current attributes */
1051 	*(int*)data = (scp->term.cur_attr >> 8) & 0xFF;
1052 	return 0;
1053 
1054     case GIO_COLOR:     	/* is this a color console ? */
1055 	if (crtc_addr == COLOR_BASE)
1056 	    *(int*)data = 1;
1057 	else
1058 	    *(int*)data = 0;
1059 	return 0;
1060 
1061     case CONS_CURRENT:  	/* get current adapter type */
1062 	*(int *)data = crtc_type;
1063 	return 0;
1064 
1065     case CONS_GET:      	/* get current video mode */
1066 	*(int*)data = scp->mode;
1067 	return 0;
1068 
1069     case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
1070 	if (*(int *)data < 0 || *(int *)data > MAX_BLANKTIME)
1071             return EINVAL;
1072 	s = spltty();
1073 	scrn_blank_time = *(int *)data;
1074 	run_scrn_saver = (scrn_blank_time != 0);
1075 	splx(s);
1076 	return 0;
1077 
1078     case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
1079 	if ((*(int*)data) & 0x01)
1080 	    flags |= BLINK_CURSOR;
1081 	else
1082 	    flags &= ~BLINK_CURSOR;
1083 	if ((*(int*)data) & 0x02) {
1084 	    if (crtc_type != KD_VGA || VESA_MODE(bios_video_mode))
1085 		return ENXIO;
1086 	    flags |= CHAR_CURSOR;
1087 	} else
1088 	    flags &= ~CHAR_CURSOR;
1089 	/*
1090 	 * The cursor shape is global property; all virtual consoles
1091 	 * are affected. Update the cursor in the current console...
1092 	 */
1093 	if (!(cur_console->status & UNKNOWN_MODE)) {
1094             remove_cursor_image(cur_console);
1095 	    if (flags & CHAR_CURSOR)
1096 	        set_destructive_cursor(cur_console);
1097 	    draw_cursor_image(cur_console);
1098 	}
1099 	return 0;
1100 
1101     case CONS_BELLTYPE: 	/* set bell type sound/visual */
1102 	if ((*(int *)data) & 0x01)
1103 	    flags |= VISUAL_BELL;
1104 	else
1105 	    flags &= ~VISUAL_BELL;
1106 	if ((*(int *)data) & 0x02)
1107 	    flags |= QUIET_BELL;
1108 	else
1109 	    flags &= ~QUIET_BELL;
1110 	return 0;
1111 
1112     case CONS_HISTORY:  	/* set history size */
1113 	if (*(int *)data > 0) {
1114 	    int lines;	/* buffer size to allocate */
1115 	    int lines0;	/* current buffer size */
1116 
1117 	    lines = imax(*(int *)data, scp->ysize);
1118 	    lines0 = (scp->history != NULL) ?
1119 		      scp->history_size / scp->xsize : scp->ysize;
1120 	    /*
1121 	     * syscons unconditionally allocates buffers upto SC_HISTORY_SIZE
1122 	     * lines or scp->ysize lines, whichever is larger. A value
1123 	     * greater than that is allowed, subject to extra_history_size.
1124 	     */
1125 	    if (lines > imax(lines0, SC_HISTORY_SIZE) + extra_history_size)
1126                 return EINVAL;
1127             if (cur_console->status & BUFFER_SAVED)
1128                 return EBUSY;
1129 	    usp = scp->history;
1130 	    scp->history = NULL;
1131 	    if (usp != NULL)
1132 		free(usp, M_DEVBUF);
1133 	    scp->history_size = lines * scp->xsize;
1134 	    /*
1135 	     * extra_history_size +=
1136 	     *    (lines0 > imax(SC_HISTORY_SIZE, scp->ysize)) ?
1137 	     *     lines0 - imax(SC_HISTORY_SIZE, scp->ysize)) : 0;
1138 	     * extra_history_size -=
1139 	     *    (lines > imax(SC_HISTORY_SIZE, scp->ysize)) ?
1140 	     *	   lines - imax(SC_HISTORY_SIZE, scp->ysize)) : 0;
1141 	     * lines0 >= ysize && lines >= ysize... Hey, the above can be
1142 	     * reduced to the following...
1143 	     */
1144 	    extra_history_size +=
1145 		imax(lines0, SC_HISTORY_SIZE) - imax(lines, SC_HISTORY_SIZE);
1146 	    usp = (u_short *)malloc(scp->history_size * sizeof(u_short),
1147 				    M_DEVBUF, M_WAITOK);
1148 	    bzero(usp, scp->history_size * sizeof(u_short));
1149 	    scp->history_head = scp->history_pos = usp;
1150 	    scp->history = usp;
1151 	    return 0;
1152 	}
1153 	else
1154 	    return EINVAL;
1155 
1156     case CONS_MOUSECTL:		/* control mouse arrow */
1157     case OLD_CONS_MOUSECTL:
1158     {
1159 	/* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
1160 	static butmap[8] = {
1161             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP
1162 		| MOUSE_MSC_BUTTON3UP,
1163             MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
1164             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
1165             MOUSE_MSC_BUTTON3UP,
1166             MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
1167             MOUSE_MSC_BUTTON2UP,
1168             MOUSE_MSC_BUTTON1UP,
1169             0,
1170 	};
1171 	mouse_info_t *mouse = (mouse_info_t*)data;
1172 	mouse_info_t buf;
1173 
1174 	if (crtc_type != KD_VGA || VESA_MODE(bios_video_mode))
1175 	    return ENODEV;
1176 
1177 	if (cmd == OLD_CONS_MOUSECTL) {
1178 	    static unsigned char swapb[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
1179 	    old_mouse_info_t *old_mouse = (old_mouse_info_t *)data;
1180 
1181 	    mouse = &buf;
1182 	    mouse->operation = old_mouse->operation;
1183 	    switch (mouse->operation) {
1184 	    case MOUSE_MODE:
1185 		mouse->u.mode = old_mouse->u.mode;
1186 		break;
1187 	    case MOUSE_SHOW:
1188 	    case MOUSE_HIDE:
1189 		break;
1190 	    case MOUSE_MOVEABS:
1191 	    case MOUSE_MOVEREL:
1192 	    case MOUSE_ACTION:
1193 		mouse->u.data.x = old_mouse->u.data.x;
1194 		mouse->u.data.y = old_mouse->u.data.y;
1195 		mouse->u.data.z = 0;
1196 		mouse->u.data.buttons = swapb[old_mouse->u.data.buttons & 0x7];
1197 		break;
1198 	    case MOUSE_GETINFO:
1199 		old_mouse->u.data.x = scp->mouse_xpos;
1200 		old_mouse->u.data.y = scp->mouse_ypos;
1201 		old_mouse->u.data.buttons = swapb[scp->mouse_buttons & 0x7];
1202 		break;
1203 	    default:
1204 		return EINVAL;
1205 	    }
1206 	}
1207 
1208 	switch (mouse->operation) {
1209 	case MOUSE_MODE:
1210 	    if (ISSIGVALID(mouse->u.mode.signal)) {
1211 		scp->mouse_signal = mouse->u.mode.signal;
1212 		scp->mouse_proc = p;
1213 		scp->mouse_pid = p->p_pid;
1214 	    }
1215 	    else {
1216 		scp->mouse_signal = 0;
1217 		scp->mouse_proc = NULL;
1218 		scp->mouse_pid = 0;
1219 	    }
1220 	    return 0;
1221 
1222 	case MOUSE_SHOW:
1223 	    if (!(scp->status & MOUSE_ENABLED)) {
1224 		scp->status |= (MOUSE_ENABLED | MOUSE_VISIBLE);
1225 		scp->mouse_oldpos = scp->mouse_pos;
1226 		mark_all(scp);
1227 		return 0;
1228 	    }
1229 	    else
1230 		return EINVAL;
1231 	    break;
1232 
1233 	case MOUSE_HIDE:
1234 	    if (scp->status & MOUSE_ENABLED) {
1235 		scp->status &= ~(MOUSE_ENABLED | MOUSE_VISIBLE);
1236 		mark_all(scp);
1237 		return 0;
1238 	    }
1239 	    else
1240 		return EINVAL;
1241 	    break;
1242 
1243 	case MOUSE_MOVEABS:
1244 	    scp->mouse_xpos = mouse->u.data.x;
1245 	    scp->mouse_ypos = mouse->u.data.y;
1246 	    set_mouse_pos(scp);
1247 	    break;
1248 
1249 	case MOUSE_MOVEREL:
1250 	    scp->mouse_xpos += mouse->u.data.x;
1251 	    scp->mouse_ypos += mouse->u.data.y;
1252 	    set_mouse_pos(scp);
1253 	    break;
1254 
1255 	case MOUSE_GETINFO:
1256 	    mouse->u.data.x = scp->mouse_xpos;
1257 	    mouse->u.data.y = scp->mouse_ypos;
1258 	    mouse->u.data.z = 0;
1259 	    mouse->u.data.buttons = scp->mouse_buttons;
1260 	    return 0;
1261 
1262 	case MOUSE_ACTION:
1263 	case MOUSE_MOTION_EVENT:
1264 	    /* this should maybe only be settable from /dev/consolectl SOS */
1265 	    /* send out mouse event on /dev/sysmouse */
1266 
1267 	    mouse_status.dx += mouse->u.data.x;
1268 	    mouse_status.dy += mouse->u.data.y;
1269 	    mouse_status.dz += mouse->u.data.z;
1270 	    if (mouse->operation == MOUSE_ACTION)
1271 	        mouse_status.button = mouse->u.data.buttons;
1272 	    mouse_status.flags |=
1273 		((mouse->u.data.x || mouse->u.data.y || mouse->u.data.z) ?
1274 		    MOUSE_POSCHANGED : 0)
1275 		| (mouse_status.obutton ^ mouse_status.button);
1276 	    if (mouse_status.flags == 0)
1277 		return 0;
1278 
1279 	    if (cur_console->status & MOUSE_ENABLED)
1280 	    	cur_console->status |= MOUSE_VISIBLE;
1281 
1282 	    if ((MOUSE_TTY)->t_state & TS_ISOPEN) {
1283 		u_char buf[MOUSE_SYS_PACKETSIZE];
1284 		int j;
1285 
1286 		/* the first five bytes are compatible with MouseSystems' */
1287 		buf[0] = MOUSE_MSC_SYNC
1288 		    | butmap[mouse_status.button & MOUSE_STDBUTTONS];
1289 		j = imax(imin(mouse->u.data.x, 255), -256);
1290 		buf[1] = j >> 1;
1291 		buf[3] = j - buf[1];
1292 		j = -imax(imin(mouse->u.data.y, 255), -256);
1293 		buf[2] = j >> 1;
1294 		buf[4] = j - buf[2];
1295 		for (j = 0; j < MOUSE_MSC_PACKETSIZE; j++)
1296 	    		(*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[j],MOUSE_TTY);
1297 		if (mouse_level >= 1) { 	/* extended part */
1298 		    j = imax(imin(mouse->u.data.z, 127), -128);
1299 		    buf[5] = (j >> 1) & 0x7f;
1300 		    buf[6] = (j - (j >> 1)) & 0x7f;
1301 		    /* buttons 4-10 */
1302 		    buf[7] = (~mouse_status.button >> 3) & 0x7f;
1303 		    for (j = MOUSE_MSC_PACKETSIZE;
1304 			 j < MOUSE_SYS_PACKETSIZE; j++)
1305 	    		(*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[j],MOUSE_TTY);
1306 		}
1307 	    }
1308 
1309 	    if (cur_console->mouse_signal) {
1310 		cur_console->mouse_buttons = mouse->u.data.buttons;
1311     		/* has controlling process died? */
1312 		if (cur_console->mouse_proc &&
1313 		    (cur_console->mouse_proc != pfind(cur_console->mouse_pid))){
1314 		    	cur_console->mouse_signal = 0;
1315 			cur_console->mouse_proc = NULL;
1316 			cur_console->mouse_pid = 0;
1317 		}
1318 		else
1319 		    psignal(cur_console->mouse_proc, cur_console->mouse_signal);
1320 	    }
1321 	    else if (mouse->operation == MOUSE_ACTION && cut_buffer != NULL) {
1322 		/* process button presses */
1323 		if ((cur_console->mouse_buttons ^ mouse->u.data.buttons) &&
1324 		    !(cur_console->status & UNKNOWN_MODE)) {
1325 		    cur_console->mouse_buttons = mouse->u.data.buttons;
1326 		    if (cur_console->mouse_buttons & MOUSE_BUTTON1DOWN)
1327 			mouse_cut_start(cur_console);
1328 		    else
1329 			mouse_cut_end(cur_console);
1330 		    if (cur_console->mouse_buttons & MOUSE_BUTTON2DOWN ||
1331 			cur_console->mouse_buttons & MOUSE_BUTTON3DOWN)
1332 			mouse_paste(cur_console);
1333 		}
1334 	    }
1335 
1336 	    if (mouse->u.data.x != 0 || mouse->u.data.y != 0) {
1337 		cur_console->mouse_xpos += mouse->u.data.x;
1338 		cur_console->mouse_ypos += mouse->u.data.y;
1339 		set_mouse_pos(cur_console);
1340 	    }
1341 
1342 	    break;
1343 
1344 	case MOUSE_BUTTON_EVENT:
1345 	    if ((mouse->u.event.id & MOUSE_BUTTONS) == 0)
1346 		return EINVAL;
1347 	    if (mouse->u.event.value < 0)
1348 		return EINVAL;
1349 
1350 	    if (mouse->u.event.value > 0) {
1351 	        cur_console->mouse_buttons |= mouse->u.event.id;
1352 	        mouse_status.button |= mouse->u.event.id;
1353 	    } else {
1354 	        cur_console->mouse_buttons &= ~mouse->u.event.id;
1355 	        mouse_status.button &= ~mouse->u.event.id;
1356 	    }
1357 	    mouse_status.flags |= mouse_status.obutton ^ mouse_status.button;
1358 	    if (mouse_status.flags == 0)
1359 		return 0;
1360 
1361 	    if (cur_console->status & MOUSE_ENABLED)
1362 	    	cur_console->status |= MOUSE_VISIBLE;
1363 
1364 	    if ((MOUSE_TTY)->t_state & TS_ISOPEN) {
1365 		u_char buf[8];
1366 		int i;
1367 
1368 		buf[0] = MOUSE_MSC_SYNC
1369 			 | butmap[mouse_status.button & MOUSE_STDBUTTONS];
1370 		buf[7] = (~mouse_status.button >> 3) & 0x7f;
1371 		buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
1372 		for (i = 0;
1373 		     i < ((mouse_level >= 1) ? MOUSE_SYS_PACKETSIZE
1374 					     : MOUSE_MSC_PACKETSIZE); i++)
1375 	    	    (*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[i],MOUSE_TTY);
1376 	    }
1377 
1378 	    if (cur_console->mouse_signal) {
1379 		if (cur_console->mouse_proc &&
1380 		    (cur_console->mouse_proc != pfind(cur_console->mouse_pid))){
1381 		    	cur_console->mouse_signal = 0;
1382 			cur_console->mouse_proc = NULL;
1383 			cur_console->mouse_pid = 0;
1384 		}
1385 		else
1386 		    psignal(cur_console->mouse_proc, cur_console->mouse_signal);
1387 		break;
1388 	    }
1389 
1390 	    if ((cur_console->status & UNKNOWN_MODE) || (cut_buffer == NULL))
1391 		break;
1392 
1393 	    switch (mouse->u.event.id) {
1394 	    case MOUSE_BUTTON1DOWN:
1395 	        switch (mouse->u.event.value % 4) {
1396 		case 0:	/* up */
1397 		    mouse_cut_end(cur_console);
1398 		    break;
1399 		case 1:
1400 		    mouse_cut_start(cur_console);
1401 		    break;
1402 		case 2:
1403 		    mouse_cut_word(cur_console);
1404 		    break;
1405 		case 3:
1406 		    mouse_cut_line(cur_console);
1407 		    break;
1408 		}
1409 		break;
1410 	    case MOUSE_BUTTON2DOWN:
1411 	        switch (mouse->u.event.value) {
1412 		case 0:	/* up */
1413 		    break;
1414 		default:
1415 		    mouse_paste(cur_console);
1416 		    break;
1417 		}
1418 		break;
1419 	    case MOUSE_BUTTON3DOWN:
1420 	        switch (mouse->u.event.value) {
1421 		case 0:	/* up */
1422 		    if (!(cur_console->mouse_buttons & MOUSE_BUTTON1DOWN))
1423 		        mouse_cut_end(cur_console);
1424 		    break;
1425 		default:
1426 		    mouse_cut_extend(cur_console);
1427 		    break;
1428 		}
1429 		break;
1430 	    }
1431 	    break;
1432 
1433 	default:
1434 	    return EINVAL;
1435 	}
1436 	/* make screensaver happy */
1437 	scsplash_stick(FALSE);
1438 	run_scrn_saver = FALSE;
1439 	return 0;
1440     }
1441 
1442     /* MOUSE_XXX: /dev/sysmouse ioctls */
1443     case MOUSE_GETHWINFO:	/* get device information */
1444     {
1445 	mousehw_t *hw = (mousehw_t *)data;
1446 
1447 	if (tp != MOUSE_TTY)
1448 	    return ENOTTY;
1449 	hw->buttons = 10;		/* XXX unknown */
1450 	hw->iftype = MOUSE_IF_SYSMOUSE;
1451 	hw->type = MOUSE_MOUSE;
1452 	hw->model = MOUSE_MODEL_GENERIC;
1453 	hw->hwid = 0;
1454 	return 0;
1455     }
1456 
1457     case MOUSE_GETMODE:		/* get protocol/mode */
1458     {
1459 	mousemode_t *mode = (mousemode_t *)data;
1460 
1461 	if (tp != MOUSE_TTY)
1462 	    return ENOTTY;
1463 	mode->level = mouse_level;
1464 	switch (mode->level) {
1465 	case 0:
1466 	    /* at this level, sysmouse emulates MouseSystems protocol */
1467 	    mode->protocol = MOUSE_PROTO_MSC;
1468 	    mode->rate = -1;		/* unknown */
1469 	    mode->resolution = -1;	/* unknown */
1470 	    mode->accelfactor = 0;	/* disabled */
1471 	    mode->packetsize = MOUSE_MSC_PACKETSIZE;
1472 	    mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
1473 	    mode->syncmask[1] = MOUSE_MSC_SYNC;
1474 	    break;
1475 
1476 	case 1:
1477 	    /* at this level, sysmouse uses its own protocol */
1478 	    mode->protocol = MOUSE_PROTO_SYSMOUSE;
1479 	    mode->rate = -1;
1480 	    mode->resolution = -1;
1481 	    mode->accelfactor = 0;
1482 	    mode->packetsize = MOUSE_SYS_PACKETSIZE;
1483 	    mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
1484 	    mode->syncmask[1] = MOUSE_SYS_SYNC;
1485 	    break;
1486 	}
1487 	return 0;
1488     }
1489 
1490     case MOUSE_SETMODE:		/* set protocol/mode */
1491     {
1492 	mousemode_t *mode = (mousemode_t *)data;
1493 
1494 	if (tp != MOUSE_TTY)
1495 	    return ENOTTY;
1496 	if ((mode->level < 0) || (mode->level > 1))
1497 	    return EINVAL;
1498 	mouse_level = mode->level;
1499 	return 0;
1500     }
1501 
1502     case MOUSE_GETLEVEL:	/* get operation level */
1503 	if (tp != MOUSE_TTY)
1504 	    return ENOTTY;
1505 	*(int *)data = mouse_level;
1506 	return 0;
1507 
1508     case MOUSE_SETLEVEL:	/* set operation level */
1509 	if (tp != MOUSE_TTY)
1510 	    return ENOTTY;
1511 	if ((*(int *)data  < 0) || (*(int *)data > 1))
1512 	    return EINVAL;
1513 	mouse_level = *(int *)data;
1514 	return 0;
1515 
1516     case MOUSE_GETSTATUS:	/* get accumulated mouse events */
1517 	if (tp != MOUSE_TTY)
1518 	    return ENOTTY;
1519 	s = spltty();
1520 	*(mousestatus_t *)data = mouse_status;
1521 	mouse_status.flags = 0;
1522 	mouse_status.obutton = mouse_status.button;
1523 	mouse_status.dx = 0;
1524 	mouse_status.dy = 0;
1525 	mouse_status.dz = 0;
1526 	splx(s);
1527 	return 0;
1528 
1529 #if notyet
1530     case MOUSE_GETVARS:		/* get internal mouse variables */
1531     case MOUSE_SETVARS:		/* set internal mouse variables */
1532 	if (tp != MOUSE_TTY)
1533 	    return ENOTTY;
1534 	return ENODEV;
1535 #endif
1536 
1537     case MOUSE_READSTATE:	/* read status from the device */
1538     case MOUSE_READDATA:	/* read data from the device */
1539 	if (tp != MOUSE_TTY)
1540 	    return ENOTTY;
1541 	return ENODEV;
1542 
1543     case CONS_GETINFO:  	/* get current (virtual) console info */
1544     {
1545 	vid_info_t *ptr = (vid_info_t*)data;
1546 	if (ptr->size == sizeof(struct vid_info)) {
1547 	    ptr->m_num = get_scr_num();
1548 	    ptr->mv_col = scp->xpos;
1549 	    ptr->mv_row = scp->ypos;
1550 	    ptr->mv_csz = scp->xsize;
1551 	    ptr->mv_rsz = scp->ysize;
1552 	    ptr->mv_norm.fore = (scp->term.std_color & 0x0f00)>>8;
1553 	    ptr->mv_norm.back = (scp->term.std_color & 0xf000)>>12;
1554 	    ptr->mv_rev.fore = (scp->term.rev_color & 0x0f00)>>8;
1555 	    ptr->mv_rev.back = (scp->term.rev_color & 0xf000)>>12;
1556 	    ptr->mv_grfc.fore = 0;      /* not supported */
1557 	    ptr->mv_grfc.back = 0;      /* not supported */
1558 	    ptr->mv_ovscan = scp->border;
1559 	    ptr->mk_keylock = scp->status & LOCK_KEY_MASK;
1560 	    return 0;
1561 	}
1562 	return EINVAL;
1563     }
1564 
1565     case CONS_GETVERS:  	/* get version number */
1566 	*(int*)data = 0x200;    /* version 2.0 */
1567 	return 0;
1568 
1569     case CONS_IDLE:		/* see if the screen has been idle */
1570 	*(int *)data = (scrn_idle && !(cur_console->status & UNKNOWN_MODE));
1571 	return 0;
1572 
1573     case CONS_SAVERMODE:	/* set saver mode */
1574 	switch(*(int *)data) {
1575 	case CONS_USR_SAVER:
1576 	    /* if a LKM screen saver is running, it will eventually stop... */
1577 	    saver_mode = *(int *)data;
1578 	    scsplash_stick(TRUE);
1579 	    break;
1580 	case CONS_LKM_SAVER:
1581 	    saver_mode = *(int *)data;
1582 	    break;
1583 	default:
1584 	    return EINVAL;
1585 	}
1586 	return 0;
1587 
1588     case CONS_SAVERSTART:	/* immediately start/stop the screen saver */
1589 	/*
1590 	 * Note that this ioctl does not guarantee the screen saver
1591 	 * actually starts or stops. It merely attempts to do so...
1592 	 */
1593 	s = spltty();
1594 	run_scrn_saver = (*(int *)data != 0);
1595 	if (run_scrn_saver)
1596 	    scrn_time_stamp -= scrn_blank_time;
1597 	splx(s);
1598 	return 0;
1599 
1600     /* VGA TEXT MODES */
1601     case SW_VGA_C40x25:
1602     case SW_VGA_C80x25: case SW_VGA_M80x25:
1603     case SW_VGA_C80x30: case SW_VGA_M80x30:
1604     case SW_VGA_C80x50: case SW_VGA_M80x50:
1605     case SW_VGA_C80x60: case SW_VGA_M80x60:
1606     case SW_B40x25:     case SW_C40x25:
1607     case SW_B80x25:     case SW_C80x25:
1608     case SW_ENH_B40x25: case SW_ENH_C40x25:
1609     case SW_ENH_B80x25: case SW_ENH_C80x25:
1610     case SW_ENH_B80x43: case SW_ENH_C80x43:
1611     case SW_EGAMONO80x25:
1612 
1613 	if (crtc_type != KD_VGA)
1614  	    return ENODEV;
1615  	mp = get_mode_param(scp, cmd & 0xff);
1616  	if (mp == NULL)
1617  	    return ENODEV;
1618 
1619 	s = spltty();
1620 	if ((error = wait_scrn_saver_stop())) {
1621 	    splx(s);
1622 	    return error;
1623 	}
1624 
1625 	scp->status &= ~MOUSE_VISIBLE;
1626 	remove_cutmarking(scp);
1627 	if (scp->history != NULL)
1628 	    i = imax(scp->history_size / scp->xsize
1629 		     - imax(SC_HISTORY_SIZE, scp->ysize), 0);
1630 	else
1631 	    i = 0;
1632 	switch (cmd & 0xff) {
1633 	case M_VGA_C80x60: case M_VGA_M80x60:
1634 	    if (!(fonts_loaded & FONT_8)) {
1635 		splx(s);
1636 		return EINVAL;
1637 	    }
1638 	    /*
1639 	     * This is a kludge to fend off scrn_update() while we
1640 	     * muck around with scp. XXX
1641 	     */
1642 	    scp->status |= UNKNOWN_MODE;
1643 	    scp->xsize = 80;
1644 	    scp->ysize = 60;
1645 	    scp->font_size = 8;
1646 	    break;
1647 	case M_VGA_C80x50: case M_VGA_M80x50:
1648 	    if (!(fonts_loaded & FONT_8)) {
1649 		splx(s);
1650 		return EINVAL;
1651 	    }
1652 	    scp->status |= UNKNOWN_MODE;
1653 	    scp->xsize = 80;
1654 	    scp->ysize = 50;
1655 	    scp->font_size = 8;
1656 	    break;
1657 	case M_ENH_B80x43: case M_ENH_C80x43:
1658 	    if (!(fonts_loaded & FONT_8)) {
1659 		splx(s);
1660 		return EINVAL;
1661 	    }
1662 	    scp->status |= UNKNOWN_MODE;
1663 	    scp->xsize = 80;
1664 	    scp->ysize = 43;
1665 	    scp->font_size = 8;
1666 	    break;
1667 	case M_VGA_C80x30: case M_VGA_M80x30:
1668 	    scp->status |= UNKNOWN_MODE;
1669 	    scp->xsize = 80;
1670 	    scp->ysize = 30;
1671 	    scp->font_size = mp[2];
1672 	    break;
1673 	case M_ENH_C40x25: case M_ENH_B40x25:
1674 	case M_ENH_C80x25: case M_ENH_B80x25:
1675 	case M_EGAMONO80x25:
1676 	    if (!(fonts_loaded & FONT_14)) {
1677 		splx(s);
1678 		return EINVAL;
1679 	    }
1680 	    /* FALL THROUGH */
1681 	default:
1682 	    if ((cmd & 0xff) > M_VGA_CG320) {
1683 		splx(s);
1684 		return EINVAL;
1685 	    }
1686 	    scp->status |= UNKNOWN_MODE;
1687             scp->xsize = mp[0];
1688             scp->ysize = mp[1] + rows_offset;
1689 	    scp->font_size = mp[2];
1690 	    break;
1691 	}
1692 
1693 	scp->mode = cmd & 0xff;
1694 	scp->xpixel = scp->xsize * 8;
1695 	scp->ypixel = scp->ysize * scp->font_size;
1696 	free(scp->scr_buf, M_DEVBUF);
1697 	scp->scr_buf = (u_short *)
1698 	    malloc(scp->xsize*scp->ysize*sizeof(u_short), M_DEVBUF, M_WAITOK);
1699 	/* move the text cursor to the home position */
1700 	move_crsr(scp, 0, 0);
1701 	/* move the mouse cursor at the center of the screen */
1702 	scp->mouse_xpos = scp->xpixel / 2;
1703 	scp->mouse_ypos = scp->ypixel / 2;
1704     	scp->mouse_pos = scp->mouse_oldpos =
1705 	    scp->scr_buf + (scp->mouse_ypos / scp->font_size) * scp->xsize
1706 	    + scp->mouse_xpos / 8;
1707 	/* allocate a larger cut buffer if necessary */
1708 	if ((cut_buffer == NULL)
1709 	    || (cut_buffer_size < scp->xsize * scp->ysize + 1)) {
1710 	    if (cut_buffer != NULL)
1711 		free(cut_buffer, M_DEVBUF);
1712 	    cut_buffer_size = scp->xsize * scp->ysize + 1;
1713 	    cut_buffer = (char *)malloc(cut_buffer_size, M_DEVBUF, M_NOWAIT);
1714 	    if (cut_buffer != NULL)
1715 		cut_buffer[0] = '\0';
1716 	}
1717 	splx(s);
1718 
1719 	usp = scp->history;
1720 	scp->history = NULL;
1721 	if (usp != NULL) {
1722 	    free(usp, M_DEVBUF);
1723 	    extra_history_size += i;
1724 	}
1725 	scp->history_size = imax(SC_HISTORY_SIZE, scp->ysize) * scp->xsize;
1726 	usp = (u_short *)malloc(scp->history_size * sizeof(u_short),
1727 				M_DEVBUF, M_NOWAIT);
1728 	if (usp != NULL)
1729 	    bzero(usp, scp->history_size * sizeof(u_short));
1730 	scp->history_head = scp->history_pos = usp;
1731 	scp->history = usp;
1732 	if (scp == cur_console)
1733 	    set_mode(scp);
1734 	clear_screen(scp);
1735 	scp->status &= ~UNKNOWN_MODE;
1736 
1737 	if (tp->t_winsize.ws_col != scp->xsize
1738 	    || tp->t_winsize.ws_row != scp->ysize) {
1739 	    tp->t_winsize.ws_col = scp->xsize;
1740 	    tp->t_winsize.ws_row = scp->ysize;
1741 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1742 	}
1743 	return 0;
1744 
1745     /* GRAPHICS MODES */
1746     case SW_BG320:     case SW_BG640:
1747     case SW_CG320:     case SW_CG320_D:   case SW_CG640_E:
1748     case SW_CG640x350: case SW_ENH_CG640:
1749     case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
1750 
1751 	if (crtc_type != KD_VGA)
1752 	    return ENODEV;
1753 	mp = get_mode_param(scp, cmd & 0xff);
1754 	if (mp == NULL)
1755 	    return ENODEV;
1756 
1757 	s = spltty();
1758 	if ((error = wait_scrn_saver_stop())) {
1759 	    splx(s);
1760 	    return error;
1761 	}
1762 
1763 	scp->status &= ~MOUSE_VISIBLE;
1764 	remove_cutmarking(scp);
1765 	scp->status |= UNKNOWN_MODE;    /* graphics mode */
1766 	scp->mode = cmd & 0xFF;
1767 	scp->xpixel = mp[0] * 8;
1768 	scp->ypixel = (mp[1] + rows_offset) * mp[2];
1769 	scp->font_size = FONT_NONE;
1770 	/* move the mouse cursor at the center of the screen */
1771 	scp->mouse_xpos = scp->xpixel / 2;
1772 	scp->mouse_ypos = scp->ypixel / 2;
1773 	splx(s);
1774 
1775 	if (scp == cur_console)
1776 	    set_mode(scp);
1777 	/* clear_graphics();*/
1778 
1779 	if (tp->t_winsize.ws_xpixel != scp->xpixel
1780 	    || tp->t_winsize.ws_ypixel != scp->ypixel) {
1781 	    tp->t_winsize.ws_xpixel = scp->xpixel;
1782 	    tp->t_winsize.ws_ypixel = scp->ypixel;
1783 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1784 	}
1785 	return 0;
1786 
1787     case SW_VGA_MODEX:
1788 	if (crtc_type != KD_VGA)
1789 	    return ENODEV;
1790 	mp = get_mode_param(scp, cmd & 0xff);
1791 	if (mp == NULL)
1792 	    return ENODEV;
1793 
1794 	s = spltty();
1795 	if ((error = wait_scrn_saver_stop())) {
1796 	    splx(s);
1797 	    return error;
1798 	}
1799 
1800 	scp->status &= ~MOUSE_VISIBLE;
1801 	remove_cutmarking(scp);
1802 	scp->status |= UNKNOWN_MODE;    /* graphics mode */
1803 	scp->mode = cmd & 0xFF;
1804 	scp->xpixel = 320;
1805 	scp->ypixel = 240;
1806 	scp->font_size = FONT_NONE;
1807 	splx(s);
1808 
1809 	if (scp == cur_console)
1810 	    set_mode(scp);
1811 	/* clear_graphics();*/
1812 	if (tp->t_winsize.ws_xpixel != scp->xpixel
1813 	    || tp->t_winsize.ws_ypixel != scp->ypixel) {
1814 	    tp->t_winsize.ws_xpixel = scp->xpixel;
1815 	    tp->t_winsize.ws_ypixel = scp->ypixel;
1816 	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1817 	}
1818 	return 0;
1819 
1820     case VT_SETMODE:    	/* set screen switcher mode */
1821     {
1822 	struct vt_mode *mode;
1823 
1824 	mode = (struct vt_mode *)data;
1825 	if (ISSIGVALID(mode->relsig) && ISSIGVALID(mode->acqsig) &&
1826 	    ISSIGVALID(mode->frsig)) {
1827 	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1828 	    if (scp->smode.mode == VT_PROCESS) {
1829 		scp->proc = p;
1830 		scp->pid = scp->proc->p_pid;
1831 	    }
1832 	    return 0;
1833 	} else
1834 	    return EINVAL;
1835     }
1836 
1837     case VT_GETMODE:    	/* get screen switcher mode */
1838 	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1839 	return 0;
1840 
1841     case VT_RELDISP:    	/* screen switcher ioctl */
1842 	switch(*data) {
1843 	case VT_FALSE:  	/* user refuses to release screen, abort */
1844 	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1845 		old_scp->status &= ~SWITCH_WAIT_REL;
1846 		switch_in_progress = FALSE;
1847 		return 0;
1848 	    }
1849 	    return EINVAL;
1850 
1851 	case VT_TRUE:   	/* user has released screen, go on */
1852 	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1853 		scp->status &= ~SWITCH_WAIT_REL;
1854 		exchange_scr();
1855 		if (new_scp->smode.mode == VT_PROCESS) {
1856 		    new_scp->status |= SWITCH_WAIT_ACQ;
1857 		    psignal(new_scp->proc, new_scp->smode.acqsig);
1858 		}
1859 		else
1860 		    switch_in_progress = FALSE;
1861 		return 0;
1862 	    }
1863 	    return EINVAL;
1864 
1865 	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1866 	    if (scp == new_scp && (scp->status & SWITCH_WAIT_ACQ)) {
1867 		scp->status &= ~SWITCH_WAIT_ACQ;
1868 		switch_in_progress = FALSE;
1869 		return 0;
1870 	    }
1871 	    return EINVAL;
1872 
1873 	default:
1874 	    return EINVAL;
1875 	}
1876 	/* NOT REACHED */
1877 
1878     case VT_OPENQRY:    	/* return free virtual console */
1879 	for (i = 0; i < MAXCONS; i++) {
1880 	    tp = VIRTUAL_TTY(i);
1881 	    if (!(tp->t_state & TS_ISOPEN)) {
1882 		*data = i + 1;
1883 		return 0;
1884 	    }
1885 	}
1886 	return EINVAL;
1887 
1888     case VT_ACTIVATE:   	/* switch to screen *data */
1889 	return switch_scr(scp, (*data) - 1);
1890 
1891     case VT_WAITACTIVE: 	/* wait for switch to occur */
1892 	if (*data > MAXCONS || *data < 0)
1893 	    return EINVAL;
1894 	if (minor(dev) == (*data) - 1)
1895 	    return 0;
1896 	if (*data == 0) {
1897 	    if (scp == cur_console)
1898 		return 0;
1899 	}
1900 	else
1901 	    scp = console[(*data) - 1];
1902 	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
1903 			     "waitvt", 0)) == ERESTART) ;
1904 	return error;
1905 
1906     case VT_GETACTIVE:
1907 	*data = get_scr_num()+1;
1908 	return 0;
1909 
1910     case KDENABIO:      	/* allow io operations */
1911 	error = suser(p->p_ucred, &p->p_acflag);
1912 	if (error != 0)
1913 	    return error;
1914 	if (securelevel > 0)
1915 	    return EPERM;
1916 	p->p_md.md_regs->tf_eflags |= PSL_IOPL;
1917 	return 0;
1918 
1919     case KDDISABIO:     	/* disallow io operations (default) */
1920 	p->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
1921 	return 0;
1922 
1923     case KDSETMODE:     	/* set current mode of this (virtual) console */
1924 	switch (*data) {
1925 	case KD_TEXT:   	/* switch to TEXT (known) mode */
1926 	    /* restore fonts & palette ! */
1927 	    if (crtc_type == KD_VGA) {
1928 		if (!VESA_MODE(scp->mode)) {
1929 #if 0
1930 		    /*
1931 		     * FONT KLUDGE
1932 		     * Don't load fonts for now... XXX
1933 		     */
1934 		    if (fonts_loaded & FONT_8)
1935 			copy_font(LOAD, FONT_8, font_8);
1936 		    if (fonts_loaded & FONT_14)
1937 			copy_font(LOAD, FONT_14, font_14);
1938 		    if (fonts_loaded & FONT_16)
1939 			copy_font(LOAD, FONT_16, font_16);
1940 #endif
1941 		}
1942 		load_palette(palette);
1943 	    }
1944 
1945 	    /* move hardware cursor out of the way */
1946 	    outb(crtc_addr, 14);
1947 	    outb(crtc_addr + 1, 0xff);
1948 	    outb(crtc_addr, 15);
1949 	    outb(crtc_addr + 1, 0xff);
1950 
1951 	    /* FALL THROUGH */
1952 
1953 	case KD_TEXT1:  	/* switch to TEXT (known) mode */
1954 	    s = spltty();
1955 	    if ((error = wait_scrn_saver_stop())) {
1956 		splx(s);
1957 		return error;
1958 	    }
1959 	    scp->status &= ~MOUSE_VISIBLE;
1960 	    remove_cutmarking(scp);
1961 	    scp->status |= UNKNOWN_MODE;
1962 	    splx(s);
1963 	    /* no restore fonts & palette */
1964 	    if (crtc_type == KD_VGA)
1965 		set_mode(scp);
1966 	    scp->status &= ~UNKNOWN_MODE;
1967 	    clear_screen(scp);
1968 	    return 0;
1969 
1970 	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
1971 	    s = spltty();
1972 	    if ((error = wait_scrn_saver_stop())) {
1973 		splx(s);
1974 		return error;
1975 	    }
1976 	    scp->status &= ~MOUSE_VISIBLE;
1977 	    remove_cutmarking(scp);
1978 	    scp->status |= UNKNOWN_MODE;
1979 	    splx(s);
1980 	    return 0;
1981 	default:
1982 	    return EINVAL;
1983 	}
1984 	/* NOT REACHED */
1985 
1986     case KDGETMODE:     	/* get current mode of this (virtual) console */
1987 	*data = (scp->status & UNKNOWN_MODE) ? KD_GRAPHICS : KD_TEXT;
1988 	return 0;
1989 
1990     case KDSBORDER:     	/* set border color of this (virtual) console */
1991 	scp->border = *data;
1992 	if (scp == cur_console)
1993 	    set_border(scp->border);
1994 	return 0;
1995 
1996     case KDSKBSTATE:    	/* set keyboard state (locks) */
1997 	if (*data >= 0 && *data <= LOCK_KEY_MASK) {
1998 	    scp->status &= ~LOCK_KEY_MASK;
1999 	    scp->status |= *data;
2000 	    if (scp == cur_console)
2001 		update_leds(scp->status);
2002 	    return 0;
2003 	}
2004 	return EINVAL;
2005 
2006     case KDGKBSTATE:    	/* get keyboard state (locks) */
2007 	*data = scp->status & LOCK_KEY_MASK;
2008 	return 0;
2009 
2010     case KDSETRAD:      	/* set keyboard repeat & delay rates */
2011 	if (*data & 0x80)
2012 	    return EINVAL;
2013 	if (sc_kbdc != NULL)
2014 	    set_keyboard(KBDC_SET_TYPEMATIC, *data);
2015 	return 0;
2016 
2017     case KDSKBMODE:     	/* set keyboard mode */
2018 	switch (*data) {
2019 	case K_RAW: 		/* switch to RAW scancode mode */
2020 	    scp->status &= ~KBD_CODE_MODE;
2021 	    scp->status |= KBD_RAW_MODE;
2022 	    return 0;
2023 
2024 	case K_CODE: 		/* switch to CODE mode */
2025 	    scp->status &= ~KBD_RAW_MODE;
2026 	    scp->status |= KBD_CODE_MODE;
2027 	    return 0;
2028 
2029 	case K_XLATE:   	/* switch to XLT ascii mode */
2030 	    if (scp == cur_console && scp->status & KBD_RAW_MODE)
2031 		shfts = ctls = alts = agrs = metas = accents = 0;
2032 	    scp->status &= ~(KBD_RAW_MODE | KBD_CODE_MODE);
2033 	    return 0;
2034 	default:
2035 	    return EINVAL;
2036 	}
2037 	/* NOT REACHED */
2038 
2039     case KDGKBMODE:     	/* get keyboard mode */
2040 	*data = (scp->status & KBD_RAW_MODE) ? K_RAW :
2041 		((scp->status & KBD_CODE_MODE) ? K_CODE : K_XLATE);
2042 	return 0;
2043 
2044     case KDMKTONE:      	/* sound the bell */
2045 	if (*(int*)data)
2046 	    do_bell(scp, (*(int*)data)&0xffff,
2047 		    (((*(int*)data)>>16)&0xffff)*hz/1000);
2048 	else
2049 	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
2050 	return 0;
2051 
2052     case KIOCSOUND:     	/* make tone (*data) hz */
2053 	if (scp == cur_console) {
2054 	    if (*(int*)data) {
2055 		int pitch = timer_freq / *(int*)data;
2056 
2057 		/* set command for counter 2, 2 byte write */
2058 		if (acquire_timer2(TIMER_16BIT|TIMER_SQWAVE))
2059 		    return EBUSY;
2060 
2061 		/* set pitch */
2062 		outb(TIMER_CNTR2, pitch);
2063 		outb(TIMER_CNTR2, (pitch>>8));
2064 
2065 		/* enable counter 2 output to speaker */
2066 		outb(IO_PPI, inb(IO_PPI) | 3);
2067 	    }
2068 	    else {
2069 		/* disable counter 2 output to speaker */
2070 		outb(IO_PPI, inb(IO_PPI) & 0xFC);
2071 		release_timer2();
2072 	    }
2073 	}
2074 	return 0;
2075 
2076     case KDGKBTYPE:     	/* get keyboard type */
2077 	*data = 0;  		/* type not known (yet) */
2078 	return 0;
2079 
2080     case KDSETLED:      	/* set keyboard LED status */
2081 	if (*data >= 0 && *data <= LED_MASK) {
2082 	    scp->status &= ~LED_MASK;
2083 	    scp->status |= *data;
2084 	    if (scp == cur_console)
2085 		update_leds(scp->status);
2086 	    return 0;
2087 	}
2088 	return EINVAL;
2089 
2090     case KDGETLED:      	/* get keyboard LED status */
2091 	*data = scp->status & LED_MASK;
2092 	return 0;
2093 
2094     case GETFKEY:       	/* get functionkey string */
2095 	if (*(u_short*)data < n_fkey_tab) {
2096 	    fkeyarg_t *ptr = (fkeyarg_t*)data;
2097 	    bcopy(&fkey_tab[ptr->keynum].str, ptr->keydef,
2098 		  fkey_tab[ptr->keynum].len);
2099 	    ptr->flen = fkey_tab[ptr->keynum].len;
2100 	    return 0;
2101 	}
2102 	else
2103 	    return EINVAL;
2104 
2105     case SETFKEY:       	/* set functionkey string */
2106 	if (*(u_short*)data < n_fkey_tab) {
2107 	    fkeyarg_t *ptr = (fkeyarg_t*)data;
2108 	    bcopy(ptr->keydef, &fkey_tab[ptr->keynum].str,
2109 		  min(ptr->flen, MAXFK));
2110 	    fkey_tab[ptr->keynum].len = min(ptr->flen, MAXFK);
2111 	    return 0;
2112 	}
2113 	else
2114 	    return EINVAL;
2115 
2116     case GIO_SCRNMAP:   	/* get output translation table */
2117 	bcopy(&scr_map, data, sizeof(scr_map));
2118 	return 0;
2119 
2120     case PIO_SCRNMAP:   	/* set output translation table */
2121 	bcopy(data, &scr_map, sizeof(scr_map));
2122 	for (i=0; i<sizeof(scr_map); i++)
2123 	    scr_rmap[scr_map[i]] = i;
2124 	return 0;
2125 
2126     case GIO_KEYMAP:    	/* get keyboard translation table */
2127 	bcopy(&key_map, data, sizeof(key_map));
2128 	return 0;
2129 
2130     case PIO_KEYMAP:    	/* set keyboard translation table */
2131 	accents = 0;
2132 	bzero(&accent_map, sizeof(accent_map));
2133 	bcopy(data, &key_map, sizeof(key_map));
2134 	return 0;
2135 
2136     case GIO_DEADKEYMAP:    	/* get accent key translation table */
2137 	bcopy(&accent_map, data, sizeof(accent_map));
2138 	return 0;
2139 
2140     case PIO_DEADKEYMAP:    	/* set accent key translation table */
2141 	accents = 0;
2142 	bcopy(data, &accent_map, sizeof(accent_map));
2143 	return 0;
2144 
2145     case PIO_FONT8x8:   	/* set 8x8 dot font */
2146 	if (crtc_type != KD_VGA)
2147 	    return ENXIO;
2148 	bcopy(data, font_8, 8*256);
2149 	fonts_loaded |= FONT_8;
2150 	/*
2151 	 * FONT KLUDGE
2152 	 * Always use the font page #0. XXX
2153 	 * Don't load if the current font size is not 8x8.
2154 	 */
2155 	if (!VESA_MODE(cur_console->mode)
2156 	    && !(cur_console->status & UNKNOWN_MODE)
2157 	    && (cur_console->font_size < 14)) {
2158 	    copy_font(LOAD, FONT_8, font_8);
2159 	    if (flags & CHAR_CURSOR)
2160 	        set_destructive_cursor(cur_console);
2161 	}
2162 	return 0;
2163 
2164     case GIO_FONT8x8:   	/* get 8x8 dot font */
2165 	if (crtc_type != KD_VGA)
2166 	    return ENXIO;
2167 	if (fonts_loaded & FONT_8) {
2168 	    bcopy(font_8, data, 8*256);
2169 	    return 0;
2170 	}
2171 	else
2172 	    return ENXIO;
2173 
2174     case PIO_FONT8x14:  	/* set 8x14 dot font */
2175 	if (crtc_type != KD_VGA)
2176 	    return ENXIO;
2177 	bcopy(data, font_14, 14*256);
2178 	fonts_loaded |= FONT_14;
2179 	/*
2180 	 * FONT KLUDGE
2181 	 * Always use the font page #0. XXX
2182 	 * Don't load if the current font size is not 8x14.
2183 	 */
2184 	if (!VESA_MODE(cur_console->mode)
2185 	    && !(cur_console->status & UNKNOWN_MODE)
2186 	    && (cur_console->font_size >= 14) && (cur_console->font_size < 16)) {
2187 	    copy_font(LOAD, FONT_14, font_14);
2188 	    if (flags & CHAR_CURSOR)
2189 	        set_destructive_cursor(cur_console);
2190 	}
2191 	return 0;
2192 
2193     case GIO_FONT8x14:  	/* get 8x14 dot font */
2194 	if (crtc_type != KD_VGA)
2195 	    return ENXIO;
2196 	if (fonts_loaded & FONT_14) {
2197 	    bcopy(font_14, data, 14*256);
2198 	    return 0;
2199 	}
2200 	else
2201 	    return ENXIO;
2202 
2203     case PIO_FONT8x16:  	/* set 8x16 dot font */
2204 	if (crtc_type != KD_VGA)
2205 	    return ENXIO;
2206 	bcopy(data, font_16, 16*256);
2207 	fonts_loaded |= FONT_16;
2208 	/*
2209 	 * FONT KLUDGE
2210 	 * Always use the font page #0. XXX
2211 	 * Don't load if the current font size is not 8x16.
2212 	 */
2213 	if (!VESA_MODE(cur_console->mode)
2214 	    && !(cur_console->status & UNKNOWN_MODE)
2215 	    && (cur_console->font_size >= 16)) {
2216 	    copy_font(LOAD, FONT_16, font_16);
2217 	    if (flags & CHAR_CURSOR)
2218 	        set_destructive_cursor(cur_console);
2219 	}
2220 	return 0;
2221 
2222     case GIO_FONT8x16:  	/* get 8x16 dot font */
2223 	if (crtc_type != KD_VGA)
2224 	    return ENXIO;
2225 	if (fonts_loaded & FONT_16) {
2226 	    bcopy(font_16, data, 16*256);
2227 	    return 0;
2228 	}
2229 	else
2230 	    return ENXIO;
2231     default:
2232 	break;
2233     }
2234 
2235     error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
2236     if (error != ENOIOCTL)
2237 	return(error);
2238     error = ttioctl(tp, cmd, data, flag);
2239     if (error != ENOIOCTL)
2240 	return(error);
2241     return(ENOTTY);
2242 }
2243 
2244 static void
2245 scstart(struct tty *tp)
2246 {
2247     struct clist *rbp;
2248     int s, len;
2249     u_char buf[PCBURST];
2250     scr_stat *scp = get_scr_stat(tp->t_dev);
2251 
2252     if (scp->status & SLKED || blink_in_progress)
2253 	return; /* XXX who repeats the call when the above flags are cleared? */
2254     s = spltty();
2255     if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
2256 	tp->t_state |= TS_BUSY;
2257 	rbp = &tp->t_outq;
2258 	while (rbp->c_cc) {
2259 	    len = q_to_b(rbp, buf, PCBURST);
2260 	    splx(s);
2261 	    ansi_put(scp, buf, len);
2262 	    s = spltty();
2263 	}
2264 	tp->t_state &= ~TS_BUSY;
2265 	ttwwakeup(tp);
2266     }
2267     splx(s);
2268 }
2269 
2270 static void
2271 scmousestart(struct tty *tp)
2272 {
2273     struct clist *rbp;
2274     int s;
2275     u_char buf[PCBURST];
2276 
2277     s = spltty();
2278     if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
2279 	tp->t_state |= TS_BUSY;
2280 	rbp = &tp->t_outq;
2281 	while (rbp->c_cc) {
2282 	    q_to_b(rbp, buf, PCBURST);
2283 	}
2284 	tp->t_state &= ~TS_BUSY;
2285 	ttwwakeup(tp);
2286     }
2287     splx(s);
2288 }
2289 
2290 void
2291 sccnprobe(struct consdev *cp)
2292 {
2293     struct isa_device *dvp;
2294 
2295     /*
2296      * Take control if we are the highest priority enabled display device.
2297      */
2298     dvp = find_display();
2299     if (dvp == NULL || dvp->id_driver != &scdriver) {
2300 	cp->cn_pri = CN_DEAD;
2301 	return;
2302     }
2303 
2304     if (!scvidprobe(dvp->id_unit, dvp->id_flags)) {
2305 	cp->cn_pri = CN_DEAD;
2306 	return;
2307     }
2308 
2309     /* initialize required fields */
2310     cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLE);
2311     cp->cn_pri = CN_INTERNAL;
2312 
2313     sc_kbdc = kbdc_open(sc_port);
2314 }
2315 
2316 void
2317 sccninit(struct consdev *cp)
2318 {
2319     scinit();
2320 }
2321 
2322 void
2323 sccnputc(dev_t dev, int c)
2324 {
2325     u_char buf[1];
2326     int s;
2327     scr_stat *scp = console[0];
2328     term_stat save = scp->term;
2329 
2330     scp->term = kernel_console;
2331     current_default = &kernel_default;
2332     if (scp == cur_console && !(scp->status & UNKNOWN_MODE))
2333 	remove_cursor_image(scp);
2334     buf[0] = c;
2335     ansi_put(scp, buf, 1);
2336     kernel_console = scp->term;
2337     current_default = &user_default;
2338     scp->term = save;
2339 
2340     s = spltty();	/* block scintr and scrn_timer */
2341     sccnupdate(scp);
2342     splx(s);
2343 }
2344 
2345 int
2346 sccngetc(dev_t dev)
2347 {
2348     int s = spltty();	/* block scintr and scrn_timer while we poll */
2349     int c;
2350 
2351     /*
2352      * Stop the screen saver and update the screen if necessary.
2353      * What if we have been running in the screen saver code... XXX
2354      */
2355     scsplash_stick(FALSE);
2356     run_scrn_saver = FALSE;
2357     sccnupdate(cur_console);
2358 
2359     c = scgetc(SCGETC_CN);
2360     splx(s);
2361     return(c);
2362 }
2363 
2364 int
2365 sccncheckc(dev_t dev)
2366 {
2367     int s = spltty();	/* block scintr and scrn_timer while we poll */
2368     int c;
2369 
2370     scsplash_stick(FALSE);
2371     run_scrn_saver = FALSE;
2372     sccnupdate(cur_console);
2373 
2374     c = scgetc(SCGETC_CN | SCGETC_NONBLOCK);
2375     splx(s);
2376     return(c == NOKEY ? -1 : c);	/* c == -1 can't happen */
2377 }
2378 
2379 static void
2380 sccnupdate(scr_stat *scp)
2381 {
2382     /* this is a cut-down version of scrn_timer()... */
2383 
2384     if (font_loading_in_progress)
2385 	return;
2386 
2387     if (panicstr) {
2388 	scsplash_stick(FALSE);
2389 	run_scrn_saver = FALSE;
2390     }
2391     if (!run_scrn_saver)
2392 	scrn_idle = FALSE;
2393     if ((saver_mode != CONS_LKM_SAVER) || !scrn_idle)
2394 	if (scrn_blanked > 0)
2395             stop_scrn_saver(current_saver);
2396 
2397     if (scp != cur_console || blink_in_progress || switch_in_progress)
2398 	return;
2399 
2400     if ((scp->status & UNKNOWN_MODE) == 0 && scrn_blanked <= 0)
2401 	scrn_update(scp, TRUE);
2402 }
2403 
2404 static scr_stat
2405 *get_scr_stat(dev_t dev)
2406 {
2407     int unit = minor(dev);
2408 
2409     if (unit == SC_CONSOLE)
2410 	return console[0];
2411     if (unit >= MAXCONS || unit < 0)
2412 	return(NULL);
2413     return console[unit];
2414 }
2415 
2416 static int
2417 get_scr_num()
2418 {
2419     int i = 0;
2420 
2421     while ((i < MAXCONS) && (cur_console != console[i]))
2422 	i++;
2423     return i < MAXCONS ? i : 0;
2424 }
2425 
2426 static void
2427 scrn_timer(void *arg)
2428 {
2429     struct timeval tv;
2430     scr_stat *scp;
2431     int s;
2432 
2433     /* don't do anything when we are touching font */
2434     if (font_loading_in_progress) {
2435 	if (arg)
2436 	    timeout(scrn_timer, (void *)TRUE, hz / 10);
2437 	return;
2438     }
2439     s = spltty();
2440 
2441     /*
2442      * With release 2.1 of the Xaccel server, the keyboard is left
2443      * hanging pretty often. Apparently an interrupt from the
2444      * keyboard is lost, and I don't know why (yet).
2445      * This ugly hack calls scintr if input is ready for the keyboard
2446      * and conveniently hides the problem.			XXX
2447      */
2448     /* Try removing anything stuck in the keyboard controller; whether
2449      * it's a keyboard scan code or mouse data. `scintr()' doesn't
2450      * read the mouse data directly, but `kbdio' routines will, as a
2451      * side effect.
2452      */
2453     if (kbdc_lock(sc_kbdc, TRUE)) {
2454 	/*
2455 	 * We have seen the lock flag is not set. Let's reset the flag early;
2456 	 * otherwise `update_led()' failes which may want the lock
2457 	 * during `scintr()'.
2458 	 */
2459 	kbdc_lock(sc_kbdc, FALSE);
2460 	if (kbdc_data_ready(sc_kbdc))
2461 	    scintr(0);
2462     }
2463 
2464     /* should we stop the screen saver? */
2465     getmicrouptime(&tv);
2466     if (panicstr || shutdown_in_progress) {
2467 	scsplash_stick(FALSE);
2468 	run_scrn_saver = FALSE;
2469     }
2470     if (run_scrn_saver) {
2471 	scrn_idle = (tv.tv_sec > scrn_time_stamp + scrn_blank_time);
2472     } else {
2473 	scrn_time_stamp = tv.tv_sec;
2474 	scrn_idle = FALSE;
2475 	if (scrn_blank_time > 0)
2476 	    run_scrn_saver = TRUE;
2477     }
2478     if ((saver_mode != CONS_LKM_SAVER) || !scrn_idle)
2479 	if (scrn_blanked > 0)
2480             stop_scrn_saver(current_saver);
2481 
2482     /* should we just return ? */
2483     if (blink_in_progress || switch_in_progress) {
2484 	if (arg)
2485 	    timeout(scrn_timer, (void *)TRUE, hz / 10);
2486 	splx(s);
2487 	return;
2488     }
2489 
2490     /* Update the screen */
2491     scp = cur_console;
2492     if ((scp->status & UNKNOWN_MODE) == 0 && scrn_blanked <= 0)
2493 	scrn_update(scp, TRUE);
2494 
2495     /* should we activate the screen saver? */
2496     if ((saver_mode == CONS_LKM_SAVER) && scrn_idle)
2497 	if ((scp->status & UNKNOWN_MODE) == 0 || scrn_blanked > 0)
2498 	    (*current_saver)(TRUE);
2499 
2500     if (arg)
2501 	timeout(scrn_timer, (void *)TRUE, hz / 25);
2502     splx(s);
2503 }
2504 
2505 static void
2506 scrn_update(scr_stat *scp, int show_cursor)
2507 {
2508     /* update screen image */
2509     if (scp->start <= scp->end)
2510         sc_bcopy(scp, scp->scr_buf, scp->start, scp->end, 0);
2511 
2512     /* we are not to show the cursor and the mouse pointer... */
2513     if (!show_cursor) {
2514         scp->end = 0;
2515         scp->start = scp->xsize*scp->ysize - 1;
2516 	return;
2517     }
2518 
2519     /* update "pseudo" mouse pointer image */
2520     if (scp->status & MOUSE_VISIBLE) {
2521         /* did mouse move since last time ? */
2522         if (scp->status & MOUSE_MOVED) {
2523             /* do we need to remove old mouse pointer image ? */
2524             if (scp->mouse_cut_start != NULL ||
2525                 (scp->mouse_pos-scp->scr_buf) <= scp->start ||
2526                 (scp->mouse_pos+scp->xsize + 1 - scp->scr_buf) >= scp->end) {
2527                 remove_mouse_image(scp);
2528             }
2529             scp->status &= ~MOUSE_MOVED;
2530             draw_mouse_image(scp);
2531         }
2532         else {
2533             /* mouse didn't move, has it been overwritten ? */
2534             if ((scp->mouse_pos+scp->xsize + 1 - scp->scr_buf) >= scp->start &&
2535                 (scp->mouse_pos - scp->scr_buf) <= scp->end) {
2536                 draw_mouse_image(scp);
2537             }
2538         }
2539     }
2540 
2541     /* update cursor image */
2542     if (scp->status & CURSOR_ENABLED) {
2543         /* did cursor move since last time ? */
2544         if (scp->cursor_pos != scp->cursor_oldpos) {
2545             /* do we need to remove old cursor image ? */
2546             if ((scp->cursor_oldpos - scp->scr_buf) < scp->start ||
2547                 ((scp->cursor_oldpos - scp->scr_buf) > scp->end)) {
2548                 remove_cursor_image(scp);
2549             }
2550             scp->cursor_oldpos = scp->cursor_pos;
2551             draw_cursor_image(scp);
2552         }
2553         else {
2554             /* cursor didn't move, has it been overwritten ? */
2555             if (scp->cursor_pos - scp->scr_buf >= scp->start &&
2556                 scp->cursor_pos - scp->scr_buf <= scp->end) {
2557                 draw_cursor_image(scp);
2558             } else {
2559                 /* if its a blinking cursor, we may have to update it */
2560                 if (flags & BLINK_CURSOR)
2561                     draw_cursor_image(scp);
2562             }
2563         }
2564         blinkrate++;
2565     }
2566 
2567     if (scp->mouse_cut_start != NULL)
2568         draw_cutmarking(scp);
2569 
2570     scp->end = 0;
2571     scp->start = scp->xsize*scp->ysize - 1;
2572 }
2573 
2574 int
2575 add_scrn_saver(void (*this_saver)(int))
2576 {
2577 #ifdef SC_SPLASH_SCREEN
2578     if (current_saver == scsplash) {
2579 	scsplash_stick(FALSE);
2580         stop_scrn_saver(scsplash);
2581     }
2582 #endif
2583 
2584     if (current_saver != default_saver)
2585 	return EBUSY;
2586     current_saver = this_saver;
2587     saver_mode = CONS_LKM_SAVER;
2588     run_scrn_saver = (scrn_blank_time > 0);
2589     return 0;
2590 }
2591 
2592 int
2593 remove_scrn_saver(void (*this_saver)(int))
2594 {
2595     if (current_saver != this_saver)
2596 	return EINVAL;
2597 
2598     /*
2599      * In order to prevent `current_saver' from being called by
2600      * the timeout routine `scrn_timer()' while we manipulate
2601      * the saver list, we shall set `current_saver' to `none_saver'
2602      * before stopping the current saver, rather than blocking by `splXX()'.
2603      */
2604     current_saver = none_saver;
2605     if (scrn_blanked > 0)
2606         stop_scrn_saver(this_saver);
2607 
2608     if (scrn_blanked > 0)
2609 	return EBUSY;	/* XXX */
2610 
2611     current_saver = default_saver;
2612     return 0;
2613 }
2614 
2615 static void
2616 stop_scrn_saver(void (*saver)(int))
2617 {
2618     (*saver)(FALSE);
2619     run_scrn_saver = FALSE;
2620     /* the screen saver may have chosen not to stop after all... */
2621     if (scrn_blanked > 0)
2622 	return;
2623 
2624     mark_all(cur_console);
2625     if (delayed_next_scr)
2626 	switch_scr(cur_console, delayed_next_scr - 1);
2627     wakeup((caddr_t)&scrn_blanked);
2628 }
2629 
2630 static int
2631 wait_scrn_saver_stop(void)
2632 {
2633     int error = 0;
2634 
2635     run_scrn_saver = FALSE;
2636     while (scrn_blanked > 0) {
2637 	error = tsleep((caddr_t)&scrn_blanked, PZERO | PCATCH, "scrsav", 0);
2638 	run_scrn_saver = FALSE;
2639 	if (error != ERESTART)
2640 	    break;
2641     }
2642     return error;
2643 }
2644 
2645 static void
2646 clear_screen(scr_stat *scp)
2647 {
2648     move_crsr(scp, 0, 0);
2649     scp->cursor_oldpos = scp->cursor_pos;
2650     fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
2651 	  scp->xsize * scp->ysize);
2652     mark_all(scp);
2653     remove_cutmarking(scp);
2654 }
2655 
2656 static int
2657 switch_scr(scr_stat *scp, u_int next_scr)
2658 {
2659     /* delay switch if actively updating screen */
2660     if (scrn_blanked > 0 || write_in_progress || blink_in_progress) {
2661 	scsplash_stick(FALSE);
2662 	run_scrn_saver = FALSE;
2663 	delayed_next_scr = next_scr+1;
2664 	return 0;
2665     }
2666 
2667     if (switch_in_progress && (cur_console->proc != pfind(cur_console->pid)))
2668 	switch_in_progress = FALSE;
2669 
2670     if (next_scr >= MAXCONS || switch_in_progress ||
2671 	(cur_console->smode.mode == VT_AUTO
2672 	 && cur_console->status & UNKNOWN_MODE)) {
2673 	do_bell(scp, BELL_PITCH, BELL_DURATION);
2674 	return EINVAL;
2675     }
2676 
2677     /* is the wanted virtual console open ? */
2678     if (next_scr) {
2679 	struct tty *tp = VIRTUAL_TTY(next_scr);
2680 	if (!(tp->t_state & TS_ISOPEN)) {
2681 	    do_bell(scp, BELL_PITCH, BELL_DURATION);
2682 	    return EINVAL;
2683 	}
2684     }
2685 
2686     switch_in_progress = TRUE;
2687     old_scp = cur_console;
2688     new_scp = console[next_scr];
2689     wakeup((caddr_t)&new_scp->smode);
2690     if (new_scp == old_scp) {
2691 	switch_in_progress = FALSE;
2692 	delayed_next_scr = FALSE;
2693 	return 0;
2694     }
2695 
2696     /* has controlling process died? */
2697     if (old_scp->proc && (old_scp->proc != pfind(old_scp->pid)))
2698 	old_scp->smode.mode = VT_AUTO;
2699     if (new_scp->proc && (new_scp->proc != pfind(new_scp->pid)))
2700 	new_scp->smode.mode = VT_AUTO;
2701 
2702     /* check the modes and switch appropriately */
2703     if (old_scp->smode.mode == VT_PROCESS) {
2704 	old_scp->status |= SWITCH_WAIT_REL;
2705 	psignal(old_scp->proc, old_scp->smode.relsig);
2706     }
2707     else {
2708 	exchange_scr();
2709 	if (new_scp->smode.mode == VT_PROCESS) {
2710 	    new_scp->status |= SWITCH_WAIT_ACQ;
2711 	    psignal(new_scp->proc, new_scp->smode.acqsig);
2712 	}
2713 	else
2714 	    switch_in_progress = FALSE;
2715     }
2716     return 0;
2717 }
2718 
2719 static void
2720 exchange_scr(void)
2721 {
2722     move_crsr(old_scp, old_scp->xpos, old_scp->ypos);
2723     cur_console = new_scp;
2724     if (old_scp->mode != new_scp->mode || (old_scp->status & UNKNOWN_MODE)){
2725 	if (crtc_type == KD_VGA)
2726 	    set_mode(new_scp);
2727     }
2728     move_crsr(new_scp, new_scp->xpos, new_scp->ypos);
2729     if (!(new_scp->status & UNKNOWN_MODE) && (flags & CHAR_CURSOR))
2730 	set_destructive_cursor(new_scp);
2731     if ((old_scp->status & UNKNOWN_MODE) && crtc_type == KD_VGA)
2732 	load_palette(palette);
2733     if (old_scp->status & KBD_RAW_MODE || new_scp->status & KBD_RAW_MODE ||
2734         old_scp->status & KBD_CODE_MODE || new_scp->status & KBD_CODE_MODE)
2735 	shfts = ctls = alts = agrs = metas = accents = 0;
2736     set_border(new_scp->border);
2737     update_leds(new_scp->status);
2738     delayed_next_scr = FALSE;
2739     mark_all(new_scp);
2740     if (new_scp->mode == 0x102) {
2741 	bzero(Crtat, 800*600/8);
2742     }
2743 }
2744 
2745 static void
2746 scan_esc(scr_stat *scp, u_char c)
2747 {
2748     static u_char ansi_col[16] =
2749 	{0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15};
2750     int i, n;
2751     u_short *src, *dst, count;
2752 
2753     if (scp->term.esc == 1) {	/* seen ESC */
2754 	switch (c) {
2755 
2756 	case '7':   /* Save cursor position */
2757 	    scp->saved_xpos = scp->xpos;
2758 	    scp->saved_ypos = scp->ypos;
2759 	    break;
2760 
2761 	case '8':   /* Restore saved cursor position */
2762 	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
2763 		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
2764 	    break;
2765 
2766 	case '[':   /* Start ESC [ sequence */
2767 	    scp->term.esc = 2;
2768 	    scp->term.last_param = -1;
2769 	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
2770 		scp->term.param[i] = 1;
2771 	    scp->term.num_param = 0;
2772 	    return;
2773 
2774 	case 'M':   /* Move cursor up 1 line, scroll if at top */
2775 	    if (scp->ypos > 0)
2776 		move_crsr(scp, scp->xpos, scp->ypos - 1);
2777 	    else {
2778 		bcopy(scp->scr_buf, scp->scr_buf + scp->xsize,
2779 		       (scp->ysize - 1) * scp->xsize * sizeof(u_short));
2780 		fillw(scp->term.cur_color | scr_map[0x20],
2781 		      scp->scr_buf, scp->xsize);
2782     		mark_all(scp);
2783 	    }
2784 	    break;
2785 #if notyet
2786 	case 'Q':
2787 	    scp->term.esc = 4;
2788 	    return;
2789 #endif
2790 	case 'c':   /* Clear screen & home */
2791 	    clear_screen(scp);
2792 	    break;
2793 
2794 	case '(':   /* iso-2022: designate 94 character set to G0 */
2795 	    scp->term.esc = 5;
2796 	    return;
2797 	}
2798     }
2799     else if (scp->term.esc == 2) {	/* seen ESC [ */
2800 	if (c >= '0' && c <= '9') {
2801 	    if (scp->term.num_param < MAX_ESC_PAR) {
2802 	    if (scp->term.last_param != scp->term.num_param) {
2803 		scp->term.last_param = scp->term.num_param;
2804 		scp->term.param[scp->term.num_param] = 0;
2805 	    }
2806 	    else
2807 		scp->term.param[scp->term.num_param] *= 10;
2808 	    scp->term.param[scp->term.num_param] += c - '0';
2809 	    return;
2810 	    }
2811 	}
2812 	scp->term.num_param = scp->term.last_param + 1;
2813 	switch (c) {
2814 
2815 	case ';':
2816 	    if (scp->term.num_param < MAX_ESC_PAR)
2817 		return;
2818 	    break;
2819 
2820 	case '=':
2821 	    scp->term.esc = 3;
2822 	    scp->term.last_param = -1;
2823 	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
2824 		scp->term.param[i] = 1;
2825 	    scp->term.num_param = 0;
2826 	    return;
2827 
2828 	case 'A':   /* up n rows */
2829 	    n = scp->term.param[0]; if (n < 1) n = 1;
2830 	    move_crsr(scp, scp->xpos, scp->ypos - n);
2831 	    break;
2832 
2833 	case 'B':   /* down n rows */
2834 	    n = scp->term.param[0]; if (n < 1) n = 1;
2835 	    move_crsr(scp, scp->xpos, scp->ypos + n);
2836 	    break;
2837 
2838 	case 'C':   /* right n columns */
2839 	    n = scp->term.param[0]; if (n < 1) n = 1;
2840 	    move_crsr(scp, scp->xpos + n, scp->ypos);
2841 	    break;
2842 
2843 	case 'D':   /* left n columns */
2844 	    n = scp->term.param[0]; if (n < 1) n = 1;
2845 	    move_crsr(scp, scp->xpos - n, scp->ypos);
2846 	    break;
2847 
2848 	case 'E':   /* cursor to start of line n lines down */
2849 	    n = scp->term.param[0]; if (n < 1) n = 1;
2850 	    move_crsr(scp, 0, scp->ypos + n);
2851 	    break;
2852 
2853 	case 'F':   /* cursor to start of line n lines up */
2854 	    n = scp->term.param[0]; if (n < 1) n = 1;
2855 	    move_crsr(scp, 0, scp->ypos - n);
2856 	    break;
2857 
2858 	case 'f':   /* Cursor move */
2859 	case 'H':
2860 	    if (scp->term.num_param == 0)
2861 		move_crsr(scp, 0, 0);
2862 	    else if (scp->term.num_param == 2)
2863 		move_crsr(scp, scp->term.param[1] - 1, scp->term.param[0] - 1);
2864 	    break;
2865 
2866 	case 'J':   /* Clear all or part of display */
2867 	    if (scp->term.num_param == 0)
2868 		n = 0;
2869 	    else
2870 		n = scp->term.param[0];
2871 	    switch (n) {
2872 	    case 0: /* clear form cursor to end of display */
2873 		fillw(scp->term.cur_color | scr_map[0x20],
2874 		      scp->cursor_pos,
2875 		      scp->scr_buf + scp->xsize * scp->ysize - scp->cursor_pos);
2876     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2877     		mark_for_update(scp, scp->xsize * scp->ysize);
2878 		remove_cutmarking(scp);
2879 		break;
2880 	    case 1: /* clear from beginning of display to cursor */
2881 		fillw(scp->term.cur_color | scr_map[0x20],
2882 		      scp->scr_buf,
2883 		      scp->cursor_pos - scp->scr_buf);
2884     		mark_for_update(scp, 0);
2885     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2886 		remove_cutmarking(scp);
2887 		break;
2888 	    case 2: /* clear entire display */
2889 		fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
2890 		      scp->xsize * scp->ysize);
2891 		mark_all(scp);
2892 		remove_cutmarking(scp);
2893 		break;
2894 	    }
2895 	    break;
2896 
2897 	case 'K':   /* Clear all or part of line */
2898 	    if (scp->term.num_param == 0)
2899 		n = 0;
2900 	    else
2901 		n = scp->term.param[0];
2902 	    switch (n) {
2903 	    case 0: /* clear form cursor to end of line */
2904 		fillw(scp->term.cur_color | scr_map[0x20],
2905 		      scp->cursor_pos,
2906 		      scp->xsize - scp->xpos);
2907     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2908     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf +
2909 				scp->xsize - scp->xpos);
2910 		break;
2911 	    case 1: /* clear from beginning of line to cursor */
2912 		fillw(scp->term.cur_color | scr_map[0x20],
2913 		      scp->cursor_pos - scp->xpos,
2914 		      scp->xpos + 1);
2915     		mark_for_update(scp, scp->ypos * scp->xsize);
2916     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2917 		break;
2918 	    case 2: /* clear entire line */
2919 		fillw(scp->term.cur_color | scr_map[0x20],
2920 		      scp->cursor_pos - scp->xpos,
2921 		      scp->xsize);
2922     		mark_for_update(scp, scp->ypos * scp->xsize);
2923     		mark_for_update(scp, (scp->ypos + 1) * scp->xsize);
2924 		break;
2925 	    }
2926 	    break;
2927 
2928 	case 'L':   /* Insert n lines */
2929 	    n = scp->term.param[0]; if (n < 1) n = 1;
2930 	    if (n > scp->ysize - scp->ypos)
2931 		n = scp->ysize - scp->ypos;
2932 	    src = scp->scr_buf + scp->ypos * scp->xsize;
2933 	    dst = src + n * scp->xsize;
2934 	    count = scp->ysize - (scp->ypos + n);
2935 	    bcopy(src, dst, count * scp->xsize * sizeof(u_short));
2936 	    fillw(scp->term.cur_color | scr_map[0x20], src,
2937 		  n * scp->xsize);
2938 	    mark_for_update(scp, scp->ypos * scp->xsize);
2939 	    mark_for_update(scp, scp->xsize * scp->ysize);
2940 	    break;
2941 
2942 	case 'M':   /* Delete n lines */
2943 	    n = scp->term.param[0]; if (n < 1) n = 1;
2944 	    if (n > scp->ysize - scp->ypos)
2945 		n = scp->ysize - scp->ypos;
2946 	    dst = scp->scr_buf + scp->ypos * scp->xsize;
2947 	    src = dst + n * scp->xsize;
2948 	    count = scp->ysize - (scp->ypos + n);
2949 	    bcopy(src, dst, count * scp->xsize * sizeof(u_short));
2950 	    src = dst + count * scp->xsize;
2951 	    fillw(scp->term.cur_color | scr_map[0x20], src,
2952 		  n * scp->xsize);
2953 	    mark_for_update(scp, scp->ypos * scp->xsize);
2954 	    mark_for_update(scp, scp->xsize * scp->ysize);
2955 	    break;
2956 
2957 	case 'P':   /* Delete n chars */
2958 	    n = scp->term.param[0]; if (n < 1) n = 1;
2959 	    if (n > scp->xsize - scp->xpos)
2960 		n = scp->xsize - scp->xpos;
2961 	    dst = scp->cursor_pos;
2962 	    src = dst + n;
2963 	    count = scp->xsize - (scp->xpos + n);
2964 	    bcopy(src, dst, count * sizeof(u_short));
2965 	    src = dst + count;
2966 	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
2967 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2968 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
2969 	    break;
2970 
2971 	case '@':   /* Insert n chars */
2972 	    n = scp->term.param[0]; if (n < 1) n = 1;
2973 	    if (n > scp->xsize - scp->xpos)
2974 		n = scp->xsize - scp->xpos;
2975 	    src = scp->cursor_pos;
2976 	    dst = src + n;
2977 	    count = scp->xsize - (scp->xpos + n);
2978 	    bcopy(src, dst, count * sizeof(u_short));
2979 	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
2980 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2981 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
2982 	    break;
2983 
2984 	case 'S':   /* scroll up n lines */
2985 	    n = scp->term.param[0]; if (n < 1)  n = 1;
2986 	    if (n > scp->ysize)
2987 		n = scp->ysize;
2988 	    bcopy(scp->scr_buf + (scp->xsize * n),
2989 		   scp->scr_buf,
2990 		   scp->xsize * (scp->ysize - n) * sizeof(u_short));
2991 	    fillw(scp->term.cur_color | scr_map[0x20],
2992 		  scp->scr_buf + scp->xsize * (scp->ysize - n),
2993 		  scp->xsize * n);
2994     	    mark_all(scp);
2995 	    break;
2996 
2997 	case 'T':   /* scroll down n lines */
2998 	    n = scp->term.param[0]; if (n < 1)  n = 1;
2999 	    if (n > scp->ysize)
3000 		n = scp->ysize;
3001 	    bcopy(scp->scr_buf,
3002 		  scp->scr_buf + (scp->xsize * n),
3003 		  scp->xsize * (scp->ysize - n) *
3004 		  sizeof(u_short));
3005 	    fillw(scp->term.cur_color | scr_map[0x20],
3006 		  scp->scr_buf, scp->xsize * n);
3007     	    mark_all(scp);
3008 	    break;
3009 
3010 	case 'X':   /* erase n characters in line */
3011 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3012 	    if (n > scp->xsize - scp->xpos)
3013 		n = scp->xsize - scp->xpos;
3014 	    fillw(scp->term.cur_color | scr_map[0x20],
3015 		  scp->cursor_pos, n);
3016 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3017 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n);
3018 	    break;
3019 
3020 	case 'Z':   /* move n tabs backwards */
3021 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3022 	    if ((i = scp->xpos & 0xf8) == scp->xpos)
3023 		i -= 8*n;
3024 	    else
3025 		i -= 8*(n-1);
3026 	    if (i < 0)
3027 		i = 0;
3028 	    move_crsr(scp, i, scp->ypos);
3029 	    break;
3030 
3031 	case '`':   /* move cursor to column n */
3032 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3033 	    move_crsr(scp, n - 1, scp->ypos);
3034 	    break;
3035 
3036 	case 'a':   /* move cursor n columns to the right */
3037 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3038 	    move_crsr(scp, scp->xpos + n, scp->ypos);
3039 	    break;
3040 
3041 	case 'd':   /* move cursor to row n */
3042 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3043 	    move_crsr(scp, scp->xpos, n - 1);
3044 	    break;
3045 
3046 	case 'e':   /* move cursor n rows down */
3047 	    n = scp->term.param[0]; if (n < 1)  n = 1;
3048 	    move_crsr(scp, scp->xpos, scp->ypos + n);
3049 	    break;
3050 
3051 	case 'm':   /* change attribute */
3052 	    if (scp->term.num_param == 0) {
3053 		scp->term.attr_mask = NORMAL_ATTR;
3054 		scp->term.cur_attr =
3055 		    scp->term.cur_color = scp->term.std_color;
3056 		break;
3057 	    }
3058 	    for (i = 0; i < scp->term.num_param; i++) {
3059 		switch (n = scp->term.param[i]) {
3060 		case 0: /* back to normal */
3061 		    scp->term.attr_mask = NORMAL_ATTR;
3062 		    scp->term.cur_attr =
3063 			scp->term.cur_color = scp->term.std_color;
3064 		    break;
3065 		case 1: /* bold */
3066 		    scp->term.attr_mask |= BOLD_ATTR;
3067 		    scp->term.cur_attr = mask2attr(&scp->term);
3068 		    break;
3069 		case 4: /* underline */
3070 		    scp->term.attr_mask |= UNDERLINE_ATTR;
3071 		    scp->term.cur_attr = mask2attr(&scp->term);
3072 		    break;
3073 		case 5: /* blink */
3074 		    scp->term.attr_mask |= BLINK_ATTR;
3075 		    scp->term.cur_attr = mask2attr(&scp->term);
3076 		    break;
3077 		case 7: /* reverse video */
3078 		    scp->term.attr_mask |= REVERSE_ATTR;
3079 		    scp->term.cur_attr = mask2attr(&scp->term);
3080 		    break;
3081 		case 30: case 31: /* set fg color */
3082 		case 32: case 33: case 34:
3083 		case 35: case 36: case 37:
3084 		    scp->term.attr_mask |= FOREGROUND_CHANGED;
3085 		    scp->term.cur_color =
3086 			(scp->term.cur_color&0xF000) | (ansi_col[(n-30)&7]<<8);
3087 		    scp->term.cur_attr = mask2attr(&scp->term);
3088 		    break;
3089 		case 40: case 41: /* set bg color */
3090 		case 42: case 43: case 44:
3091 		case 45: case 46: case 47:
3092 		    scp->term.attr_mask |= BACKGROUND_CHANGED;
3093 		    scp->term.cur_color =
3094 			(scp->term.cur_color&0x0F00) | (ansi_col[(n-40)&7]<<12);
3095 		    scp->term.cur_attr = mask2attr(&scp->term);
3096 		    break;
3097 		}
3098 	    }
3099 	    break;
3100 
3101 	case 's':   /* Save cursor position */
3102 	    scp->saved_xpos = scp->xpos;
3103 	    scp->saved_ypos = scp->ypos;
3104 	    break;
3105 
3106 	case 'u':   /* Restore saved cursor position */
3107 	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
3108 		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
3109 	    break;
3110 
3111 	case 'x':
3112 	    if (scp->term.num_param == 0)
3113 		n = 0;
3114 	    else
3115 		n = scp->term.param[0];
3116 	    switch (n) {
3117 	    case 0:     /* reset attributes */
3118 		scp->term.attr_mask = NORMAL_ATTR;
3119 		scp->term.cur_attr =
3120 		    scp->term.cur_color = scp->term.std_color =
3121 		    current_default->std_color;
3122 		scp->term.rev_color = current_default->rev_color;
3123 		break;
3124 	    case 1:     /* set ansi background */
3125 		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
3126 		scp->term.cur_color = scp->term.std_color =
3127 		    (scp->term.std_color & 0x0F00) |
3128 		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
3129 		scp->term.cur_attr = mask2attr(&scp->term);
3130 		break;
3131 	    case 2:     /* set ansi foreground */
3132 		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
3133 		scp->term.cur_color = scp->term.std_color =
3134 		    (scp->term.std_color & 0xF000) |
3135 		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
3136 		scp->term.cur_attr = mask2attr(&scp->term);
3137 		break;
3138 	    case 3:     /* set ansi attribute directly */
3139 		scp->term.attr_mask &= ~(FOREGROUND_CHANGED|BACKGROUND_CHANGED);
3140 		scp->term.cur_color = scp->term.std_color =
3141 		    (scp->term.param[1]&0xFF)<<8;
3142 		scp->term.cur_attr = mask2attr(&scp->term);
3143 		break;
3144 	    case 5:     /* set ansi reverse video background */
3145 		scp->term.rev_color =
3146 		    (scp->term.rev_color & 0x0F00) |
3147 		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
3148 		scp->term.cur_attr = mask2attr(&scp->term);
3149 		break;
3150 	    case 6:     /* set ansi reverse video foreground */
3151 		scp->term.rev_color =
3152 		    (scp->term.rev_color & 0xF000) |
3153 		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
3154 		scp->term.cur_attr = mask2attr(&scp->term);
3155 		break;
3156 	    case 7:     /* set ansi reverse video directly */
3157 		scp->term.rev_color =
3158 		    (scp->term.param[1]&0xFF)<<8;
3159 		scp->term.cur_attr = mask2attr(&scp->term);
3160 		break;
3161 	    }
3162 	    break;
3163 
3164 	case 'z':   /* switch to (virtual) console n */
3165 	    if (scp->term.num_param == 1)
3166 		switch_scr(scp, scp->term.param[0]);
3167 	    break;
3168 	}
3169     }
3170     else if (scp->term.esc == 3) {	/* seen ESC [0-9]+ = */
3171 	if (c >= '0' && c <= '9') {
3172 	    if (scp->term.num_param < MAX_ESC_PAR) {
3173 	    if (scp->term.last_param != scp->term.num_param) {
3174 		scp->term.last_param = scp->term.num_param;
3175 		scp->term.param[scp->term.num_param] = 0;
3176 	    }
3177 	    else
3178 		scp->term.param[scp->term.num_param] *= 10;
3179 	    scp->term.param[scp->term.num_param] += c - '0';
3180 	    return;
3181 	    }
3182 	}
3183 	scp->term.num_param = scp->term.last_param + 1;
3184 	switch (c) {
3185 
3186 	case ';':
3187 	    if (scp->term.num_param < MAX_ESC_PAR)
3188 		return;
3189 	    break;
3190 
3191 	case 'A':   /* set display border color */
3192 	    if (scp->term.num_param == 1) {
3193 		scp->border=scp->term.param[0] & 0xff;
3194 		if (scp == cur_console)
3195 		    set_border(scp->border);
3196             }
3197 	    break;
3198 
3199 	case 'B':   /* set bell pitch and duration */
3200 	    if (scp->term.num_param == 2) {
3201 		scp->bell_pitch = scp->term.param[0];
3202 		scp->bell_duration = scp->term.param[1];
3203 	    }
3204 	    break;
3205 
3206 	case 'C':   /* set cursor type & shape */
3207 	    if (scp->term.num_param == 1) {
3208 		if (scp->term.param[0] & 0x01)
3209 		    flags |= BLINK_CURSOR;
3210 		else
3211 		    flags &= ~BLINK_CURSOR;
3212 		if ((scp->term.param[0] & 0x02) &&
3213 		    crtc_type == KD_VGA && !VESA_MODE(bios_video_mode))
3214 		    flags |= CHAR_CURSOR;
3215 		else
3216 		    flags &= ~CHAR_CURSOR;
3217 	    }
3218 	    else if (scp->term.num_param == 2) {
3219 		scp->cursor_start = scp->term.param[0] & 0x1F;
3220 		scp->cursor_end = scp->term.param[1] & 0x1F;
3221 	    }
3222 	    /*
3223 	     * The cursor shape is global property; all virtual consoles
3224 	     * are affected. Update the cursor in the current console...
3225 	     */
3226 	    if (!(cur_console->status & UNKNOWN_MODE)) {
3227 		remove_cursor_image(cur_console);
3228 		if (crtc_type == KD_VGA && (flags & CHAR_CURSOR))
3229 	            set_destructive_cursor(cur_console);
3230 		draw_cursor_image(cur_console);
3231 	    }
3232 	    break;
3233 
3234 	case 'F':   /* set ansi foreground */
3235 	    if (scp->term.num_param == 1) {
3236 		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
3237 		scp->term.cur_color = scp->term.std_color =
3238 		    (scp->term.std_color & 0xF000)
3239 		    | ((scp->term.param[0] & 0x0F) << 8);
3240 		scp->term.cur_attr = mask2attr(&scp->term);
3241 	    }
3242 	    break;
3243 
3244 	case 'G':   /* set ansi background */
3245 	    if (scp->term.num_param == 1) {
3246 		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
3247 		scp->term.cur_color = scp->term.std_color =
3248 		    (scp->term.std_color & 0x0F00)
3249 		    | ((scp->term.param[0] & 0x0F) << 12);
3250 		scp->term.cur_attr = mask2attr(&scp->term);
3251 	    }
3252 	    break;
3253 
3254 	case 'H':   /* set ansi reverse video foreground */
3255 	    if (scp->term.num_param == 1) {
3256 		scp->term.rev_color =
3257 		    (scp->term.rev_color & 0xF000)
3258 		    | ((scp->term.param[0] & 0x0F) << 8);
3259 		scp->term.cur_attr = mask2attr(&scp->term);
3260 	    }
3261 	    break;
3262 
3263 	case 'I':   /* set ansi reverse video background */
3264 	    if (scp->term.num_param == 1) {
3265 		scp->term.rev_color =
3266 		    (scp->term.rev_color & 0x0F00)
3267 		    | ((scp->term.param[0] & 0x0F) << 12);
3268 		scp->term.cur_attr = mask2attr(&scp->term);
3269 	    }
3270 	    break;
3271 	}
3272     }
3273 #if notyet
3274     else if (scp->term.esc == 4) {	/* seen ESC Q */
3275 	/* to be filled */
3276     }
3277 #endif
3278     else if (scp->term.esc == 5) {	/* seen ESC ( */
3279 	switch (c) {
3280 	case 'B':   /* iso-2022: desginate ASCII into G0 */
3281 	    break;
3282 	/* other items to be filled */
3283 	default:
3284 	    break;
3285 	}
3286     }
3287     scp->term.esc = 0;
3288 }
3289 
3290 static void
3291 ansi_put(scr_stat *scp, u_char *buf, int len)
3292 {
3293     u_char *ptr = buf;
3294 
3295     /* make screensaver happy */
3296     if (!sticky_splash && scp == cur_console)
3297 	run_scrn_saver = FALSE;
3298 
3299     write_in_progress++;
3300 outloop:
3301     if (scp->term.esc) {
3302 	scan_esc(scp, *ptr++);
3303 	len--;
3304     }
3305     else if (PRINTABLE(*ptr)) {     /* Print only printables */
3306  	int cnt = len <= (scp->xsize-scp->xpos) ? len : (scp->xsize-scp->xpos);
3307  	u_short cur_attr = scp->term.cur_attr;
3308  	u_short *cursor_pos = scp->cursor_pos;
3309 	do {
3310 	    /*
3311 	     * gcc-2.6.3 generates poor (un)sign extension code.  Casting the
3312 	     * pointers in the following to volatile should have no effect,
3313 	     * but in fact speeds up this inner loop from 26 to 18 cycles
3314 	     * (+ cache misses) on i486's.
3315 	     */
3316 #define	UCVP(ucp)	((u_char volatile *)(ucp))
3317 	    *cursor_pos++ = UCVP(scr_map)[*UCVP(ptr)] | cur_attr;
3318 	    ptr++;
3319 	    cnt--;
3320 	} while (cnt && PRINTABLE(*ptr));
3321 	len -= (cursor_pos - scp->cursor_pos);
3322 	scp->xpos += (cursor_pos - scp->cursor_pos);
3323 	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3324 	mark_for_update(scp, cursor_pos - scp->scr_buf);
3325 	scp->cursor_pos = cursor_pos;
3326 	if (scp->xpos >= scp->xsize) {
3327 	    scp->xpos = 0;
3328 	    scp->ypos++;
3329 	}
3330     }
3331     else  {
3332 	switch(*ptr) {
3333 	case 0x07:
3334 	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
3335 	    break;
3336 
3337 	case 0x08:      /* non-destructive backspace */
3338 	    if (scp->cursor_pos > scp->scr_buf) {
3339 	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3340 		scp->cursor_pos--;
3341 	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3342 		if (scp->xpos > 0)
3343 		    scp->xpos--;
3344 		else {
3345 		    scp->xpos += scp->xsize - 1;
3346 		    scp->ypos--;
3347 		}
3348 	    }
3349 	    break;
3350 
3351 	case 0x09:  /* non-destructive tab */
3352 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3353 	    scp->cursor_pos += (8 - scp->xpos % 8u);
3354 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3355 	    if ((scp->xpos += (8 - scp->xpos % 8u)) >= scp->xsize) {
3356 	        scp->xpos = 0;
3357 	        scp->ypos++;
3358 	    }
3359 	    break;
3360 
3361 	case 0x0a:  /* newline, same pos */
3362 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3363 	    scp->cursor_pos += scp->xsize;
3364 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3365 	    scp->ypos++;
3366 	    break;
3367 
3368 	case 0x0c:  /* form feed, clears screen */
3369 	    clear_screen(scp);
3370 	    break;
3371 
3372 	case 0x0d:  /* return, return to pos 0 */
3373 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3374 	    scp->cursor_pos -= scp->xpos;
3375 	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3376 	    scp->xpos = 0;
3377 	    break;
3378 
3379 	case 0x1b:  /* start escape sequence */
3380 	    scp->term.esc = 1;
3381 	    scp->term.num_param = 0;
3382 	    break;
3383 	}
3384 	ptr++; len--;
3385     }
3386     /* do we have to scroll ?? */
3387     if (scp->cursor_pos >= scp->scr_buf + scp->ysize * scp->xsize) {
3388 	remove_cutmarking(scp);
3389 	if (scp->history) {
3390 	    bcopy(scp->scr_buf, scp->history_head,
3391 		   scp->xsize * sizeof(u_short));
3392 	    scp->history_head += scp->xsize;
3393 	    if (scp->history_head + scp->xsize >
3394 		scp->history + scp->history_size)
3395 		scp->history_head = scp->history;
3396 	}
3397 	bcopy(scp->scr_buf + scp->xsize, scp->scr_buf,
3398 	       scp->xsize * (scp->ysize - 1) * sizeof(u_short));
3399 	fillw(scp->term.cur_color | scr_map[0x20],
3400 	      scp->scr_buf + scp->xsize * (scp->ysize - 1),
3401 	      scp->xsize);
3402 	scp->cursor_pos -= scp->xsize;
3403 	scp->ypos--;
3404     	mark_all(scp);
3405     }
3406     if (len)
3407 	goto outloop;
3408     write_in_progress--;
3409     if (delayed_next_scr)
3410 	switch_scr(scp, delayed_next_scr - 1);
3411 }
3412 
3413 static void
3414 scinit(void)
3415 {
3416     u_int hw_cursor;
3417     u_int i;
3418 
3419     if (init_done != COLD)
3420 	return;
3421     init_done = WARM;
3422 
3423     /*
3424      * Ensure a zero start address.  This is mainly to recover after
3425      * switching from pcvt using userconfig().  The registers are w/o
3426      * for old hardware so it's too hard to relocate the active screen
3427      * memory.
3428      */
3429     outb(crtc_addr, 12);
3430     outb(crtc_addr + 1, 0);
3431     outb(crtc_addr, 13);
3432     outb(crtc_addr + 1, 0);
3433 
3434     /* extract cursor location */
3435     outb(crtc_addr, 14);
3436     hw_cursor = inb(crtc_addr + 1) << 8;
3437     outb(crtc_addr, 15);
3438     hw_cursor |= inb(crtc_addr + 1);
3439 
3440     /*
3441      * Validate cursor location.  It may be off the screen.  Then we must
3442      * not use it for the initial buffer offset.
3443      */
3444     if (hw_cursor >= ROW * COL)
3445 	hw_cursor = (ROW - 1) * COL;
3446 
3447     /* move hardware cursor out of the way */
3448     outb(crtc_addr, 14);
3449     outb(crtc_addr + 1, 0xff);
3450     outb(crtc_addr, 15);
3451     outb(crtc_addr + 1, 0xff);
3452 
3453     /* set up the first console */
3454     current_default = &user_default;
3455     console[0] = &main_console;
3456     init_scp(console[0]);
3457     cur_console = console[0];
3458 
3459     /* discard the video mode table if we are not familiar with it... */
3460     if (video_mode_ptr) {
3461         bzero(mode_map, sizeof(mode_map));
3462 	bcopy(video_mode_ptr + MODE_PARAM_SIZE*console[0]->mode,
3463 	      vgaregs2, sizeof(vgaregs2));
3464         switch (comp_vgaregs(vgaregs, video_mode_ptr
3465                     + MODE_PARAM_SIZE*console[0]->mode)) {
3466         case COMP_IDENTICAL:
3467             map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
3468             /*
3469              * This is a kludge for Toshiba DynaBook SS433 whose BIOS video
3470              * mode table entry has the actual # of rows at the offset 1;
3471 	     * BIOSes from other manufacturers store the # of rows - 1 there.
3472 	     * XXX
3473              */
3474 	    rows_offset = vgaregs[1] + 1
3475 		- video_mode_ptr[MODE_PARAM_SIZE*console[0]->mode + 1];
3476             break;
3477         case COMP_SIMILAR:
3478             map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
3479             mode_map[console[0]->mode] = vgaregs;
3480 	    rows_offset = vgaregs[1] + 1
3481 		- video_mode_ptr[MODE_PARAM_SIZE*console[0]->mode + 1];
3482             vgaregs[1] -= rows_offset - 1;
3483             break;
3484         case COMP_DIFFERENT:
3485         default:
3486             video_mode_ptr = NULL;
3487             mode_map[console[0]->mode] = vgaregs;
3488 	    rows_offset = 1;
3489             break;
3490         }
3491     }
3492 
3493     /* copy screen to temporary buffer */
3494     if (!VESA_MODE(console[0]->mode))
3495 	    generic_bcopy(Crtat, sc_buffer,
3496 		   console[0]->xsize * console[0]->ysize * sizeof(u_short));
3497 
3498     console[0]->scr_buf = console[0]->mouse_pos = console[0]->mouse_oldpos
3499 	= sc_buffer;
3500     console[0]->cursor_pos = console[0]->cursor_oldpos = sc_buffer + hw_cursor;
3501     console[0]->cursor_saveunder = *console[0]->cursor_pos;
3502     console[0]->xpos = hw_cursor % COL;
3503     console[0]->ypos = hw_cursor / COL;
3504     for (i=1; i<MAXCONS; i++)
3505 	console[i] = NULL;
3506     kernel_console.esc = 0;
3507     kernel_console.attr_mask = NORMAL_ATTR;
3508     kernel_console.cur_attr =
3509 	kernel_console.cur_color = kernel_console.std_color =
3510 	kernel_default.std_color;
3511     kernel_console.rev_color = kernel_default.rev_color;
3512 
3513     /* initialize mapscrn arrays to a one to one map */
3514     for (i=0; i<sizeof(scr_map); i++) {
3515 	scr_map[i] = scr_rmap[i] = i;
3516     }
3517 
3518     /* Save font and palette if VGA */
3519     if (crtc_type == KD_VGA) {
3520 	if (!VESA_MODE(bios_video_mode)) {
3521 	    if (fonts_loaded & FONT_16) {
3522 		copy_font(LOAD, FONT_16, font_16);
3523 	    } else {
3524 		copy_font(SAVE, FONT_16, font_16);
3525 		fonts_loaded = FONT_16;
3526 	    }
3527 	    set_destructive_cursor(console[0]);
3528 	}
3529 	save_palette();
3530     }
3531 
3532 #ifdef SC_SPLASH_SCREEN
3533     /*
3534      * If not booting verbosely, put up the splash.
3535      * Note that the splash screen is not currently supported in
3536      * the VESA mode.
3537      */
3538     if (!(boothowto & RB_VERBOSE) && !VESA_MODE(bios_video_mode))
3539 	scsplash_init();
3540 #endif
3541 }
3542 
3543 static void
3544 scshutdown(int howto, void *arg)
3545 {
3546     scsplash_stick(FALSE);
3547     run_scrn_saver = FALSE;
3548     if (!cold && cur_console->smode.mode == VT_AUTO
3549 	&& console[0]->smode.mode == VT_AUTO)
3550 	switch_scr(cur_console, 0);
3551     shutdown_in_progress = TRUE;
3552 }
3553 
3554 static void
3555 map_mode_table(char *map[], char *table, int max)
3556 {
3557     int i;
3558 
3559     for(i = 0; i < max; ++i)
3560 	map[i] = table + i*MODE_PARAM_SIZE;
3561     for(; i < MODE_MAP_SIZE; ++i)
3562 	map[i] = NULL;
3563 }
3564 
3565 static int
3566 map_mode_num(int mode)
3567 {
3568     static struct {
3569         int from;
3570         int to;
3571     } mode_map[] = {
3572         { M_ENH_B80x43, M_ENH_B80x25 },
3573         { M_ENH_C80x43, M_ENH_C80x25 },
3574         { M_VGA_M80x30, M_VGA_M80x25 },
3575         { M_VGA_C80x30, M_VGA_C80x25 },
3576         { M_VGA_M80x50, M_VGA_M80x25 },
3577         { M_VGA_C80x50, M_VGA_C80x25 },
3578         { M_VGA_M80x60, M_VGA_M80x25 },
3579         { M_VGA_C80x60, M_VGA_C80x25 },
3580         { M_VGA_MODEX,  M_VGA_CG320 },
3581     };
3582     int i;
3583 
3584     for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
3585         if (mode_map[i].from == mode)
3586             return mode_map[i].to;
3587     }
3588     return mode;
3589 }
3590 
3591 static char
3592 *get_mode_param(scr_stat *scp, int mode)
3593 {
3594     if (mode >= MODE_MAP_SIZE)
3595 	mode = map_mode_num(mode);
3596     if (mode < MODE_MAP_SIZE)
3597 	return mode_map[mode];
3598     else
3599 	return NULL;
3600 }
3601 
3602 static scr_stat
3603 *alloc_scp()
3604 {
3605     scr_stat *scp;
3606 
3607     scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3608     init_scp(scp);
3609     scp->scr_buf = scp->cursor_pos = scp->cursor_oldpos =
3610 	(u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
3611 			  M_DEVBUF, M_WAITOK);
3612     scp->mouse_pos = scp->mouse_oldpos =
3613 	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
3614 			scp->mouse_xpos/8);
3615     scp->history_head = scp->history_pos =
3616 	(u_short *)malloc(scp->history_size*sizeof(u_short),
3617 			  M_DEVBUF, M_WAITOK);
3618     bzero(scp->history_head, scp->history_size*sizeof(u_short));
3619     scp->history = scp->history_head;
3620 /* SOS
3621     if (crtc_type == KD_VGA && video_mode_ptr)
3622 	set_mode(scp);
3623 */
3624     clear_screen(scp);
3625     scp->cursor_saveunder = *scp->cursor_pos;
3626     return scp;
3627 }
3628 
3629 static void
3630 init_scp(scr_stat *scp)
3631 {
3632     switch(crtc_type) {
3633     case KD_VGA:
3634 	if (VESA_MODE(bios_video_mode))
3635 	    scp->mode = bios_video_mode;
3636 	else if (crtc_addr == MONO_BASE)
3637 	    scp->mode = M_VGA_M80x25;
3638 	else
3639 	    scp->mode = M_VGA_C80x25;
3640 	scp->font_size = 16;
3641 	break;
3642     case KD_CGA:
3643 	if (crtc_addr == MONO_BASE)
3644 	    scp->mode = M_B80x25;
3645 	else
3646 	    scp->mode = M_C80x25;
3647 	scp->font_size = 8;
3648 	break;
3649     case KD_EGA:
3650 	if (crtc_addr == MONO_BASE)
3651 	    scp->mode = M_B80x25;
3652 	else
3653 	    scp->mode = M_C80x25;
3654 	scp->font_size = 14;
3655 	break;
3656     case KD_MONO:
3657     case KD_HERCULES:
3658     default:
3659 	scp->mode = M_EGAMONO80x25;
3660 	scp->font_size = 14;
3661 	break;
3662     }
3663     scp->initial_mode = scp->mode;
3664 
3665     scp->xsize = COL;
3666     scp->ysize = ROW;
3667     scp->xpixel = scp->xsize * 8;
3668     scp->ypixel = scp->ysize * scp->font_size;
3669     scp->xpos = scp->ypos = 0;
3670     scp->saved_xpos = scp->saved_ypos = -1;
3671     scp->start = scp->xsize * scp->ysize;
3672     scp->end = 0;
3673     scp->term.esc = 0;
3674     scp->term.attr_mask = NORMAL_ATTR;
3675     scp->term.cur_attr =
3676 	scp->term.cur_color = scp->term.std_color =
3677 	current_default->std_color;
3678     scp->term.rev_color = current_default->rev_color;
3679     scp->border = BG_BLACK;
3680     scp->cursor_start = *(char *)pa_to_va(0x461);
3681     scp->cursor_end = *(char *)pa_to_va(0x460);
3682     scp->mouse_xpos = scp->xsize*8/2;
3683     scp->mouse_ypos = scp->ysize*scp->font_size/2;
3684     scp->mouse_cut_start = scp->mouse_cut_end = NULL;
3685     scp->mouse_signal = 0;
3686     scp->mouse_pid = 0;
3687     scp->mouse_proc = NULL;
3688     scp->bell_pitch = BELL_PITCH;
3689     scp->bell_duration = BELL_DURATION;
3690     scp->status = (*(char *)pa_to_va(0x417) & 0x20) ? NLKED : 0;
3691     scp->status |= CURSOR_ENABLED;
3692     scp->pid = 0;
3693     scp->proc = NULL;
3694     scp->smode.mode = VT_AUTO;
3695     scp->history_head = scp->history_pos = scp->history = NULL;
3696     scp->history_size = imax(SC_HISTORY_SIZE, scp->ysize) * scp->xsize;
3697 }
3698 
3699 static u_char
3700 *get_fstr(u_int c, u_int *len)
3701 {
3702     u_int i;
3703 
3704     if (!(c & FKEY))
3705 	return(NULL);
3706     i = (c & 0xFF) - F_FN;
3707     if (i > n_fkey_tab)
3708 	return(NULL);
3709     *len = fkey_tab[i].len;
3710     return(fkey_tab[i].str);
3711 }
3712 
3713 static void
3714 history_to_screen(scr_stat *scp)
3715 {
3716     int i;
3717 
3718     for (i=0; i<scp->ysize; i++)
3719 	bcopy(scp->history + (((scp->history_pos - scp->history) +
3720 	       scp->history_size-((i+1)*scp->xsize))%scp->history_size),
3721 	       scp->scr_buf + (scp->xsize * (scp->ysize-1 - i)),
3722 	       scp->xsize * sizeof(u_short));
3723     mark_all(scp);
3724 }
3725 
3726 static int
3727 history_up_line(scr_stat *scp)
3728 {
3729     if (WRAPHIST(scp, scp->history_pos, -(scp->xsize*scp->ysize)) !=
3730 	scp->history_head) {
3731 	scp->history_pos = WRAPHIST(scp, scp->history_pos, -scp->xsize);
3732 	history_to_screen(scp);
3733 	return 0;
3734     }
3735     else
3736 	return -1;
3737 }
3738 
3739 static int
3740 history_down_line(scr_stat *scp)
3741 {
3742     if (scp->history_pos != scp->history_head) {
3743 	scp->history_pos = WRAPHIST(scp, scp->history_pos, scp->xsize);
3744 	history_to_screen(scp);
3745 	return 0;
3746     }
3747     else
3748 	return -1;
3749 }
3750 
3751 /*
3752  * scgetc(flags) - get character from keyboard.
3753  * If flags & SCGETC_CN, then avoid harmful side effects.
3754  * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3755  * return NOKEY if there is nothing there.
3756  */
3757 static u_int
3758 scgetc(u_int flags)
3759 {
3760     struct key_t *key;
3761     u_char scancode, keycode;
3762     u_int state, action;
3763     int c;
3764     static u_char esc_flag = 0, compose = 0;
3765     static u_int chr = 0;
3766 
3767 next_code:
3768     /* first see if there is something in the keyboard port */
3769     if (flags & SCGETC_NONBLOCK) {
3770 	c = read_kbd_data_no_wait(sc_kbdc);
3771 	if (c == -1)
3772 	    return(NOKEY);
3773     } else {
3774 	do {
3775 	    c = read_kbd_data(sc_kbdc);
3776 	} while(c == -1);
3777     }
3778     scancode = (u_char)c;
3779 
3780     /* make screensaver happy */
3781     if (!(scancode & 0x80)) {
3782 	scsplash_stick(FALSE);
3783 	run_scrn_saver = FALSE;
3784     }
3785 
3786     if (!(flags & SCGETC_CN)) {
3787 	/* do the /dev/random device a favour */
3788 	add_keyboard_randomness(scancode);
3789 
3790 	if (cur_console->status & KBD_RAW_MODE)
3791 	    return scancode;
3792     }
3793 
3794     keycode = scancode & 0x7F;
3795     switch (esc_flag) {
3796     case 0x00:      /* normal scancode */
3797 	switch(scancode) {
3798 	case 0xB8:  /* left alt (compose key) */
3799 	    if (compose) {
3800 		compose = 0;
3801 		if (chr > 255) {
3802 		    do_bell(cur_console,
3803 			BELL_PITCH, BELL_DURATION);
3804 		    chr = 0;
3805 		}
3806 	    }
3807 	    break;
3808 	case 0x38:
3809 	    if (!compose) {
3810 		compose = 1;
3811 		chr = 0;
3812 	    }
3813 	    break;
3814 	case 0xE0:
3815 	case 0xE1:
3816 	    esc_flag = scancode;
3817 	    goto next_code;
3818 	}
3819 	break;
3820     case 0xE0:      /* 0xE0 prefix */
3821 	esc_flag = 0;
3822 	switch (keycode) {
3823 	case 0x1C:  /* right enter key */
3824 	    keycode = 0x59;
3825 	    break;
3826 	case 0x1D:  /* right ctrl key */
3827 	    keycode = 0x5A;
3828 	    break;
3829 	case 0x35:  /* keypad divide key */
3830 	    keycode = 0x5B;
3831 	    break;
3832 	case 0x37:  /* print scrn key */
3833 	    keycode = 0x5C;
3834 	    break;
3835 	case 0x38:  /* right alt key (alt gr) */
3836 	    keycode = 0x5D;
3837 	    break;
3838 	case 0x47:  /* grey home key */
3839 	    keycode = 0x5E;
3840 	    break;
3841 	case 0x48:  /* grey up arrow key */
3842 	    keycode = 0x5F;
3843 	    break;
3844 	case 0x49:  /* grey page up key */
3845 	    keycode = 0x60;
3846 	    break;
3847 	case 0x4B:  /* grey left arrow key */
3848 	    keycode = 0x61;
3849 	    break;
3850 	case 0x4D:  /* grey right arrow key */
3851 	    keycode = 0x62;
3852 	    break;
3853 	case 0x4F:  /* grey end key */
3854 	    keycode = 0x63;
3855 	    break;
3856 	case 0x50:  /* grey down arrow key */
3857 	    keycode = 0x64;
3858 	    break;
3859 	case 0x51:  /* grey page down key */
3860 	    keycode = 0x65;
3861 	    break;
3862 	case 0x52:  /* grey insert key */
3863 	    keycode = 0x66;
3864 	    break;
3865 	case 0x53:  /* grey delete key */
3866 	    keycode = 0x67;
3867 	    break;
3868 
3869 	/* the following 3 are only used on the MS "Natural" keyboard */
3870 	case 0x5b:  /* left Window key */
3871 	    keycode = 0x69;
3872 	    break;
3873 	case 0x5c:  /* right Window key */
3874 	    keycode = 0x6a;
3875 	    break;
3876 	case 0x5d:  /* menu key */
3877 	    keycode = 0x6b;
3878 	    break;
3879 	default:    /* ignore everything else */
3880 	    goto next_code;
3881 	}
3882 	break;
3883     case 0xE1:      /* 0xE1 prefix */
3884 	esc_flag = 0;
3885 	if (keycode == 0x1D)
3886 	    esc_flag = 0x1D;
3887 	goto next_code;
3888 	/* NOT REACHED */
3889     case 0x1D:      /* pause / break */
3890 	esc_flag = 0;
3891 	if (keycode != 0x45)
3892 	    goto next_code;
3893 	keycode = 0x68;
3894 	break;
3895     }
3896 
3897     if (!(flags & SCGETC_CN) && (cur_console->status & KBD_CODE_MODE))
3898 	return (keycode | (scancode & 0x80));
3899 
3900     /* if scroll-lock pressed allow history browsing */
3901     if (cur_console->history && cur_console->status & SLKED) {
3902 	int i;
3903 
3904 	cur_console->status &= ~CURSOR_ENABLED;
3905 	if (!(cur_console->status & BUFFER_SAVED)) {
3906 	    cur_console->status |= BUFFER_SAVED;
3907 	    cur_console->history_save = cur_console->history_head;
3908 
3909 	    /* copy screen into top of history buffer */
3910 	    for (i=0; i<cur_console->ysize; i++) {
3911 		bcopy(cur_console->scr_buf + (cur_console->xsize * i),
3912 		       cur_console->history_head,
3913 		       cur_console->xsize * sizeof(u_short));
3914 		cur_console->history_head += cur_console->xsize;
3915 		if (cur_console->history_head + cur_console->xsize >
3916 		    cur_console->history + cur_console->history_size)
3917 		    cur_console->history_head=cur_console->history;
3918 	    }
3919 	    cur_console->history_pos = cur_console->history_head;
3920 	    history_to_screen(cur_console);
3921 	}
3922 	switch (scancode) {
3923 	case 0x47:  /* home key */
3924 	    cur_console->history_pos = cur_console->history_head;
3925 	    history_to_screen(cur_console);
3926 	    goto next_code;
3927 
3928 	case 0x4F:  /* end key */
3929 	    cur_console->history_pos =
3930 		WRAPHIST(cur_console, cur_console->history_head,
3931 			 cur_console->xsize*cur_console->ysize);
3932 	    history_to_screen(cur_console);
3933 	    goto next_code;
3934 
3935 	case 0x48:  /* up arrow key */
3936 	    if (history_up_line(cur_console))
3937 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3938 	    goto next_code;
3939 
3940 	case 0x50:  /* down arrow key */
3941 	    if (history_down_line(cur_console))
3942 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3943 	    goto next_code;
3944 
3945 	case 0x49:  /* page up key */
3946 	    for (i=0; i<cur_console->ysize; i++)
3947 	    if (history_up_line(cur_console)) {
3948 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3949 		break;
3950 	    }
3951 	    goto next_code;
3952 
3953 	case 0x51:  /* page down key */
3954 	    for (i=0; i<cur_console->ysize; i++)
3955 	    if (history_down_line(cur_console)) {
3956 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3957 		break;
3958 	    }
3959 	    goto next_code;
3960 	}
3961     }
3962 
3963     if (compose) {
3964 	switch (scancode) {
3965 	/* key pressed process it */
3966 	case 0x47: case 0x48: case 0x49:    /* keypad 7,8,9 */
3967 	    chr = (scancode - 0x40) + chr*10;
3968 	    goto next_code;
3969 	case 0x4B: case 0x4C: case 0x4D:    /* keypad 4,5,6 */
3970 	    chr = (scancode - 0x47) + chr*10;
3971 	    goto next_code;
3972 	case 0x4F: case 0x50: case 0x51:    /* keypad 1,2,3 */
3973 	    chr = (scancode - 0x4E) + chr*10;
3974 	    goto next_code;
3975 	case 0x52:              /* keypad 0 */
3976 	    chr *= 10;
3977 	    goto next_code;
3978 
3979 	/* key release, no interest here */
3980 	case 0xC7: case 0xC8: case 0xC9:    /* keypad 7,8,9 */
3981 	case 0xCB: case 0xCC: case 0xCD:    /* keypad 4,5,6 */
3982 	case 0xCF: case 0xD0: case 0xD1:    /* keypad 1,2,3 */
3983 	case 0xD2:              /* keypad 0 */
3984 	    goto next_code;
3985 
3986 	case 0x38:              /* left alt key */
3987 	    break;
3988 	default:
3989 	    if (chr) {
3990 		compose = chr = 0;
3991 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3992 		goto next_code;
3993 	    }
3994 	    break;
3995 	}
3996     }
3997 
3998     state = (shfts ? 1 : 0 ) | (2 * (ctls ? 1 : 0)) | (4 * (alts ? 1 : 0));
3999     if ((!agrs && (cur_console->status & ALKED))
4000 	|| (agrs && !(cur_console->status & ALKED)))
4001 	keycode += ALTGR_OFFSET;
4002     key = &key_map.key[keycode];
4003     if ( ((key->flgs & FLAG_LOCK_C) && (cur_console->status & CLKED))
4004 	 || ((key->flgs & FLAG_LOCK_N) && (cur_console->status & NLKED)) )
4005 	state ^= 1;
4006 
4007     /* Check for make/break */
4008     action = key->map[state];
4009     if (scancode & 0x80) {      /* key released */
4010 	if (key->spcl & (0x80>>state)) {
4011 	    switch (action) {
4012 	    case LSH:
4013 		shfts &= ~1;
4014 		break;
4015 	    case RSH:
4016 		shfts &= ~2;
4017 		break;
4018 	    case LCTR:
4019 		ctls &= ~1;
4020 		break;
4021 	    case RCTR:
4022 		ctls &= ~2;
4023 		break;
4024 	    case LALT:
4025 		alts &= ~1;
4026 		break;
4027 	    case RALT:
4028 		alts &= ~2;
4029 		break;
4030 	    case NLK:
4031 		nlkcnt = 0;
4032 		break;
4033 	    case CLK:
4034 		clkcnt = 0;
4035 		break;
4036 	    case SLK:
4037 		slkcnt = 0;
4038 		break;
4039 	    case ASH:
4040 		agrs = 0;
4041 		break;
4042 	    case ALK:
4043 		alkcnt = 0;
4044 		break;
4045 	    case META:
4046 		metas = 0;
4047 		break;
4048 	    }
4049 	}
4050 	if (chr && !compose) {
4051 	    action = chr;
4052 	    chr = 0;
4053 	    return(action);
4054 	}
4055     } else {
4056 	/* key pressed */
4057 	if (key->spcl & (0x80>>state)) {
4058 	    switch (action) {
4059 	    /* LOCKING KEYS */
4060 	    case NLK:
4061 		if (!nlkcnt) {
4062 		    nlkcnt++;
4063 		    if (cur_console->status & NLKED)
4064 			cur_console->status &= ~NLKED;
4065 		    else
4066 			cur_console->status |= NLKED;
4067 		    update_leds(cur_console->status);
4068 		}
4069 		break;
4070 	    case CLK:
4071 		if (!clkcnt) {
4072 		    clkcnt++;
4073 		    if (cur_console->status & CLKED)
4074 			cur_console->status &= ~CLKED;
4075 		    else
4076 			cur_console->status |= CLKED;
4077 		    update_leds(cur_console->status);
4078 		}
4079 		break;
4080 	    case SLK:
4081 		if (!slkcnt) {
4082 		    slkcnt++;
4083 		    if (cur_console->status & SLKED) {
4084 			cur_console->status &= ~SLKED;
4085 			if (cur_console->status & BUFFER_SAVED){
4086 			    int i;
4087 			    u_short *ptr = cur_console->history_save;
4088 
4089 			    for (i=0; i<cur_console->ysize; i++) {
4090 				bcopy(ptr,
4091 				       cur_console->scr_buf +
4092 				       (cur_console->xsize*i),
4093 				       cur_console->xsize * sizeof(u_short));
4094 				ptr += cur_console->xsize;
4095 				if (ptr + cur_console->xsize >
4096 				    cur_console->history +
4097 				    cur_console->history_size)
4098 				    ptr = cur_console->history;
4099 			    }
4100 			    cur_console->status &= ~BUFFER_SAVED;
4101 			    cur_console->history_head=cur_console->history_save;
4102 			    cur_console->status |= CURSOR_ENABLED;
4103 			    mark_all(cur_console);
4104 			}
4105 			scstart(VIRTUAL_TTY(get_scr_num()));
4106 		    }
4107 		    else
4108 			cur_console->status |= SLKED;
4109 		    update_leds(cur_console->status);
4110 		}
4111 		break;
4112 	    case ALK:
4113 		if (!alkcnt) {
4114 		    alkcnt++;
4115 		    if (cur_console->status & ALKED)
4116 			cur_console->status &= ~ALKED;
4117 		    else
4118 			cur_console->status |= ALKED;
4119 		    update_leds(cur_console->status);
4120 		}
4121 		break;
4122 
4123 	    /* NON-LOCKING KEYS */
4124 	    case NOP:
4125 		break;
4126 	    case SPSC:
4127 		/* force activatation/deactivation of the screen saver */
4128 		accents = 0;
4129 		if (scrn_blanked <= 0) {
4130 		    run_scrn_saver = TRUE;
4131 		    scrn_time_stamp -= scrn_blank_time;
4132 		}
4133 #ifdef SC_SPLASH_SCREEN
4134 		if (cold) {
4135 		    /*
4136 		     * While devices are being probed, the screen saver need
4137 		     * to be invoked explictly. XXX
4138 		     */
4139 		    if (scrn_blanked > 0) {
4140 			scsplash_stick(FALSE);
4141 			stop_scrn_saver(current_saver);
4142 		    } else {
4143 			if ((cur_console->status & UNKNOWN_MODE) == 0) {
4144 			    scsplash_stick(TRUE);
4145 			    (*current_saver)(TRUE);
4146 			}
4147 		    }
4148 		}
4149 #endif
4150 		break;
4151 	    case RBT:
4152 #ifndef SC_DISABLE_REBOOT
4153 		accents = 0;
4154 		shutdown_nice();
4155 #endif
4156 		break;
4157 	    case SUSP:
4158 #if NAPM > 0
4159 		accents = 0;
4160 		apm_suspend(PMST_SUSPEND);
4161 #endif
4162 		break;
4163 
4164 	    case STBY:
4165 #if NAPM > 0
4166 		accents = 0;
4167 		apm_suspend(PMST_STANDBY);
4168 #endif
4169 		break;
4170 
4171 	    case DBG:
4172 #ifdef DDB          /* try to switch to console 0 */
4173 		accents = 0;
4174 		/*
4175 		 * TRY to make sure the screen saver is stopped,
4176 		 * and the screen is updated before switching to
4177 		 * the vty0.
4178 		 */
4179 		scrn_timer((void *)FALSE);
4180 		if (cur_console->smode.mode == VT_AUTO &&
4181 		    console[0]->smode.mode == VT_AUTO)
4182 		    switch_scr(cur_console, 0);
4183 		Debugger("manual escape to debugger");
4184 #else
4185 		printf("No debugger in kernel\n");
4186 #endif
4187 		break;
4188 	    case LSH:
4189 		shfts |= 1;
4190 		break;
4191 	    case RSH:
4192 		shfts |= 2;
4193 		break;
4194 	    case LCTR:
4195 		ctls |= 1;
4196 		break;
4197 	    case RCTR:
4198 		ctls |= 2;
4199 		break;
4200 	    case LALT:
4201 		alts |= 1;
4202 		break;
4203 	    case RALT:
4204 		alts |= 2;
4205 		break;
4206 	    case ASH:
4207 		agrs = 1;
4208 		break;
4209 	    case META:
4210 		metas = 1;
4211 		break;
4212 	    case NEXT:
4213 		{
4214 		int next, this = get_scr_num();
4215 		accents = 0;
4216 		for (next = this+1; next != this; next = (next+1)%MAXCONS) {
4217 		    struct tty *tp = VIRTUAL_TTY(next);
4218 		    if (tp->t_state & TS_ISOPEN) {
4219 			switch_scr(cur_console, next);
4220 			break;
4221 		    }
4222 		}
4223 		}
4224 		break;
4225 	    case BTAB:
4226 		accents = 0;
4227 		return(BKEY);
4228 	    default:
4229 		if (action >= F_ACC && action <= L_ACC) {
4230 		    /* turn it into an index */
4231 		    action -= F_ACC - 1;
4232 		    if ((action > accent_map.n_accs)
4233 			|| (accent_map.acc[action - 1].accchar == 0)) {
4234 			/*
4235 			 * The index is out of range or pointing to an
4236 			 * empty entry.
4237 			 */
4238 			accents = 0;
4239 			do_bell(cur_console, BELL_PITCH, BELL_DURATION);
4240 		    }
4241 		    /*
4242 		     * If the same accent key has been hit twice,
4243 		     * produce the accent char itself.
4244 		     */
4245 		    if (action == accents) {
4246 			action = accent_map.acc[accents - 1].accchar;
4247 			accents = 0;
4248 			if (metas)
4249 			    action |= MKEY;
4250 			return (action);
4251 		    }
4252 		    /* remember the index and wait for the next key stroke */
4253 		    accents = action;
4254 		    break;
4255 		}
4256 		if (accents > 0) {
4257 		    accents = 0;
4258 		    do_bell(cur_console, BELL_PITCH, BELL_DURATION);
4259 		}
4260 		if (action >= F_SCR && action <= L_SCR) {
4261 		    switch_scr(cur_console, action - F_SCR);
4262 		    break;
4263 		}
4264 		if (action >= F_FN && action <= L_FN)
4265 		    action |= FKEY;
4266 		return(action);
4267 	    }
4268 	}
4269 	else {
4270 	    if (accents) {
4271 		struct acc_t *acc;
4272 		int i;
4273 
4274 		acc = &accent_map.acc[accents - 1];
4275 		accents = 0;
4276 		/*
4277 		 * If the accent key is followed by the space key,
4278 		 * produce the accent char itself.
4279 		 */
4280 		if (action == ' ') {
4281 		    action = acc->accchar;
4282 		    if (metas)
4283 			action |= MKEY;
4284 		    return (action);
4285 		}
4286 		for (i = 0; i < NUM_ACCENTCHARS; ++i) {
4287 		    if (acc->map[i][0] == 0)	/* end of the map entry */
4288 			break;
4289 		    if (acc->map[i][0] == action) {
4290 			action = acc->map[i][1];
4291 			if (metas)
4292 			    action |= MKEY;
4293 			return (action);
4294 		    }
4295 		}
4296 		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
4297 		goto next_code;
4298 	    }
4299 	    if (metas)
4300 		action |= MKEY;
4301 	    return(action);
4302 	}
4303     }
4304     goto next_code;
4305 }
4306 
4307 int
4308 scmmap(dev_t dev, int offset, int nprot)
4309 {
4310     if (offset > 0x20000 - PAGE_SIZE)
4311 	return -1;
4312     return i386_btop((VIDEOMEM + offset));
4313 }
4314 
4315 /*
4316  * Calculate hardware attributes word using logical attributes mask and
4317  * hardware colors
4318  */
4319 
4320 static int
4321 mask2attr(struct term_stat *term)
4322 {
4323     int attr, mask = term->attr_mask;
4324 
4325     if (mask & REVERSE_ATTR) {
4326 	attr = ((mask & FOREGROUND_CHANGED) ?
4327 		((term->cur_color & 0xF000) >> 4) :
4328 		(term->rev_color & 0x0F00)) |
4329 	       ((mask & BACKGROUND_CHANGED) ?
4330 		((term->cur_color & 0x0F00) << 4) :
4331 		(term->rev_color & 0xF000));
4332     } else
4333 	attr = term->cur_color;
4334 
4335     /* XXX: underline mapping for Hercules adapter can be better */
4336     if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
4337 	attr ^= 0x0800;
4338     if (mask & BLINK_ATTR)
4339 	attr ^= 0x8000;
4340 
4341     return attr;
4342 }
4343 
4344 static void
4345 set_keyboard(int command, int data)
4346 {
4347     int s;
4348 
4349     if (sc_kbdc == NULL)
4350 	return;
4351 
4352     /* prevent the timeout routine from polling the keyboard */
4353     if (!kbdc_lock(sc_kbdc, TRUE))
4354 	return;
4355 
4356     /* disable the keyboard and mouse interrupt */
4357     s = spltty();
4358 #if 0
4359     c = get_controller_command_byte(sc_kbdc);
4360     if ((c == -1)
4361 	|| !set_controller_command_byte(sc_kbdc,
4362             kbdc_get_device_mask(sc_kbdc),
4363             KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
4364                 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
4365 	/* CONTROLLER ERROR */
4366         kbdc_lock(sc_kbdc, FALSE);
4367 	splx(s);
4368 	return;
4369     }
4370     /*
4371      * Now that the keyboard controller is told not to generate
4372      * the keyboard and mouse interrupts, call `splx()' to allow
4373      * the other tty interrupts. The clock interrupt may also occur,
4374      * but the timeout routine (`scrn_timer()') will be blocked
4375      * by the lock flag set via `kbdc_lock()'
4376      */
4377     splx(s);
4378 #endif
4379 
4380     if (send_kbd_command_and_data(sc_kbdc, command, data) != KBD_ACK)
4381         send_kbd_command(sc_kbdc, KBDC_ENABLE_KBD);
4382 
4383 #if 0
4384     /* restore the interrupts */
4385     if (!set_controller_command_byte(sc_kbdc,
4386             kbdc_get_device_mask(sc_kbdc),
4387 	    c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
4388 	/* CONTROLLER ERROR */
4389     }
4390 #else
4391     splx(s);
4392 #endif
4393     kbdc_lock(sc_kbdc, FALSE);
4394 }
4395 
4396 static void
4397 update_leds(int which)
4398 {
4399     static u_char xlate_leds[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
4400 
4401     /* replace CAPS led with ALTGR led for ALTGR keyboards */
4402     if (key_map.n_keys > ALTGR_OFFSET) {
4403 	if (which & ALKED)
4404 	    which |= CLKED;
4405 	else
4406 	    which &= ~CLKED;
4407     }
4408 
4409     set_keyboard(KBDC_SET_LEDS, xlate_leds[which & LED_MASK]);
4410 }
4411 
4412 void
4413 set_mode(scr_stat *scp)
4414 {
4415     char special_modetable[MODE_PARAM_SIZE];
4416     char *mp;
4417     int s;
4418     int i;
4419 
4420     if (scp != cur_console)
4421 	return;
4422 
4423     /*
4424      * even if mode switching is disabled, we can change back
4425      * to the initial mode or the custom mode based on the initial
4426      * mode if we have saved register values upon start-up.
4427      */
4428     mp = get_mode_param(scp, scp->mode);
4429     if (mp == NULL)
4430 	return;
4431     bcopy(mp, &special_modetable, sizeof(special_modetable));
4432 
4433     /* setup video hardware for the given mode */
4434     switch (scp->mode) {
4435     case M_VGA_C80x60: case M_VGA_M80x60:
4436 	special_modetable[2]  = 0x08;
4437 	special_modetable[19] = 0x47;
4438 	goto special_480l;
4439 
4440     case M_VGA_C80x30: case M_VGA_M80x30:
4441 	special_modetable[19] = 0x4f;
4442 special_480l:
4443 	special_modetable[9] |= 0xc0;
4444 	special_modetable[16] = 0x08;
4445 	special_modetable[17] = 0x3e;
4446 	special_modetable[26] = 0xea;
4447 	special_modetable[28] = 0xdf;
4448 	special_modetable[31] = 0xe7;
4449 	special_modetable[32] = 0x04;
4450 	goto setup_mode;
4451 
4452     case M_ENH_C80x43: case M_ENH_B80x43:
4453 	special_modetable[28] = 87;
4454 	goto special_80x50;
4455 
4456     case M_VGA_C80x50: case M_VGA_M80x50:
4457 special_80x50:
4458 	special_modetable[2] = 8;
4459 	special_modetable[19] = 7;
4460 	goto setup_mode;
4461 
4462     case M_VGA_C40x25: case M_VGA_C80x25:
4463     case M_VGA_M80x25:
4464     case M_B40x25:     case M_C40x25:
4465     case M_B80x25:     case M_C80x25:
4466     case M_ENH_B40x25: case M_ENH_C40x25:
4467     case M_ENH_B80x25: case M_ENH_C80x25:
4468     case M_EGAMONO80x25:
4469 
4470 setup_mode:
4471 	set_vgaregs(special_modetable);
4472 	scp->font_size = special_modetable[2];
4473 
4474 	/* set font type (size) */
4475 	if (scp->font_size < 14) {
4476 	    if (fonts_loaded & FONT_8)
4477 		copy_font(LOAD, FONT_8, font_8);
4478 	    i = 0x0a;				/* font 2 */
4479 	} else if (scp->font_size >= 16) {
4480 	    if (fonts_loaded & FONT_16)
4481 		copy_font(LOAD, FONT_16, font_16);
4482 	    i = 0x00;				/* font 0 */
4483 	} else {
4484 	    if (fonts_loaded & FONT_14)
4485 		copy_font(LOAD, FONT_14, font_14);
4486 	    i = 0x05;				/* font 1 */
4487 	}
4488 	/*
4489 	 * FONT KLUDGE:
4490 	 * This is an interim kludge to display correct font.
4491 	 * Always use the font page #0 on the video plane 2.
4492 	 * Somehow we cannot show the font in other font pages on
4493 	 * some video cards... XXX
4494 	 */
4495 	i = 0x00;
4496 	s = splhigh();
4497 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
4498 	outb(TSIDX, 0x03); outb(TSREG, i);
4499 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
4500 	splx(s);
4501 	if (flags & CHAR_CURSOR)
4502 	    set_destructive_cursor(scp);
4503 	mark_all(scp);
4504 	break;
4505 
4506     case M_VGA_MODEX:
4507 	/* "unchain" the VGA mode */
4508 	special_modetable[5-1+0x04] &= 0xf7;
4509 	special_modetable[5-1+0x04] |= 0x04;
4510 	/* turn off doubleword mode */
4511 	special_modetable[10+0x14] &= 0xbf;
4512 	/* turn off word adressing */
4513 	special_modetable[10+0x17] |= 0x40;
4514 	/* set logical screen width */
4515 	special_modetable[10+0x13] = 80;
4516 	/* set 240 lines */
4517 	special_modetable[10+0x11] = 0x2c;
4518 	special_modetable[10+0x06] = 0x0d;
4519 	special_modetable[10+0x07] = 0x3e;
4520 	special_modetable[10+0x10] = 0xea;
4521 	special_modetable[10+0x11] = 0xac;
4522 	special_modetable[10+0x12] = 0xdf;
4523 	special_modetable[10+0x15] = 0xe7;
4524 	special_modetable[10+0x16] = 0x06;
4525 	/* set vertical sync polarity to reflect aspect ratio */
4526 	special_modetable[9] = 0xe3;
4527 	goto setup_grmode;
4528 
4529     case M_BG320:     case M_CG320:     case M_BG640:
4530     case M_CG320_D:   case M_CG640_E:
4531     case M_CG640x350: case M_ENH_CG640:
4532     case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
4533 
4534 setup_grmode:
4535 	set_vgaregs(special_modetable);
4536 	scp->font_size = FONT_NONE;
4537 	break;
4538 
4539     default:
4540 	/* call user defined function XXX */
4541 	break;
4542     }
4543 
4544     /* set border color for this (virtual) console */
4545     set_border(scp->border);
4546     return;
4547 }
4548 
4549 void
4550 set_border(u_char color)
4551 {
4552     switch (crtc_type) {
4553     case KD_EGA:
4554     case KD_VGA:
4555         inb(crtc_addr + 6);		/* reset flip-flop */
4556         outb(ATC, 0x31); outb(ATC, color);
4557 	break;
4558     case KD_CGA:
4559 	outb(crtc_addr + 5, color & 0x0f); /* color select register */
4560 	break;
4561     case KD_MONO:
4562     case KD_HERCULES:
4563     default:
4564 	break;
4565     }
4566 }
4567 
4568 static void
4569 set_vgaregs(char *modetable)
4570 {
4571     int i, s = splhigh();
4572 
4573     outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
4574     for (i=0; i<4; i++) {           		/* program sequencer */
4575 	outb(TSIDX, i+1);
4576 	outb(TSREG, modetable[i+5]);
4577     }
4578     outb(MISC, modetable[9]);       		/* set dot-clock */
4579     outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
4580     outb(crtc_addr, 0x11);
4581     outb(crtc_addr+1, inb(crtc_addr+1) & 0x7F);
4582     for (i=0; i<25; i++) {          		/* program crtc */
4583 	outb(crtc_addr, i);
4584 	if (i == 14 || i == 15)     		/* no hardware cursor */
4585 	    outb(crtc_addr+1, 0xff);
4586 	else
4587 	    outb(crtc_addr+1, modetable[i+10]);
4588     }
4589     inb(crtc_addr+6);           		/* reset flip-flop */
4590     for (i=0; i<20; i++) {          		/* program attribute ctrl */
4591 	outb(ATC, i);
4592 	outb(ATC, modetable[i+35]);
4593     }
4594     for (i=0; i<9; i++) {           		/* program graph data ctrl */
4595 	outb(GDCIDX, i);
4596 	outb(GDCREG, modetable[i+55]);
4597     }
4598     inb(crtc_addr+6);           		/* reset flip-flop */
4599     outb(ATC, 0x20);            		/* enable palette */
4600     splx(s);
4601 }
4602 
4603 static void
4604 read_vgaregs(char *buf)
4605 {
4606     int i, j;
4607     int s;
4608 
4609     bzero(buf, MODE_PARAM_SIZE);
4610 
4611     s = splhigh();
4612 
4613     outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
4614     for (i=0, j=5; i<4; i++) {
4615 	outb(TSIDX, i+1);
4616 	buf[j++] = inb(TSREG);
4617     }
4618     buf[9] = inb(MISC + 10);      		/* dot-clock */
4619     outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
4620 
4621     for (i=0, j=10; i<25; i++) {       		/* crtc */
4622 	outb(crtc_addr, i);
4623 	buf[j++] = inb(crtc_addr+1);
4624     }
4625     for (i=0, j=35; i<20; i++) {          	/* attribute ctrl */
4626         inb(crtc_addr+6);           		/* reset flip-flop */
4627 	outb(ATC, i);
4628 	buf[j++] = inb(ATC + 1);
4629     }
4630     for (i=0, j=55; i<9; i++) {           	/* graph data ctrl */
4631 	outb(GDCIDX, i);
4632 	buf[j++] = inb(GDCREG);
4633     }
4634     inb(crtc_addr+6);           		/* reset flip-flop */
4635     outb(ATC, 0x20);            		/* enable palette */
4636 
4637     buf[0] = *(char *)pa_to_va(0x44a);		/* COLS */
4638     buf[1] = *(char *)pa_to_va(0x484);		/* ROWS */
4639     buf[2] = *(char *)pa_to_va(0x485);		/* POINTS */
4640     buf[3] = *(char *)pa_to_va(0x44c);
4641     buf[4] = *(char *)pa_to_va(0x44d);
4642 
4643     splx(s);
4644 }
4645 
4646 static int
4647 comp_vgaregs(u_char *buf1, u_char *buf2)
4648 {
4649     static struct {
4650         u_char mask;
4651     } params[MODE_PARAM_SIZE] = {
4652 	0xff, 0x00, 0xff, 		/* COLS, ROWS, POINTS */
4653 	0xff, 0xff, 			/* page length */
4654 	0xfe, 0xff, 0xff, 0xff,		/* sequencer registers */
4655 	0xf3,				/* misc register */
4656 	0xff, 0xff, 0xff, 0x7f, 0xff,	/* CRTC */
4657 	0xff, 0xff, 0xff, 0x7f, 0xff,
4658 	0x00, 0x00, 0x00, 0x00, 0x00,
4659 	0x00, 0xff, 0x7f, 0xff, 0xff,
4660 	0x7f, 0xff, 0xff, 0xef, 0xff,
4661 	0xff, 0xff, 0xff, 0xff, 0xff,	/* attribute controller registers */
4662 	0xff, 0xff, 0xff, 0xff, 0xff,
4663 	0xff, 0xff, 0xff, 0xff, 0xff,
4664 	0xff, 0xff, 0xff, 0xff, 0xf0,
4665 	0xff, 0xff, 0xff, 0xff, 0xff,	/* GDC register */
4666 	0xff, 0xff, 0xff, 0xff,
4667     };
4668     int identical = TRUE;
4669     int i;
4670 
4671     for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
4672 	if (params[i].mask == 0)	/* don't care */
4673 	    continue;
4674 	if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
4675 	    return COMP_DIFFERENT;
4676 	if (buf1[i] != buf2[i])
4677 	    identical = FALSE;
4678     }
4679     return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
4680 
4681 #if 0
4682     for(i = 0; i < 20; ++i) {
4683 	if (*buf1++ != *buf2++)
4684 	    return COMP_DIFFERENT;
4685     }
4686     buf1 += 2;  /* skip the cursor shape */
4687     buf2 += 2;
4688     for(i = 22; i < 24; ++i) {
4689 	if (*buf1++ != *buf2++)
4690 	    return COMP_DIFFERENT;
4691     }
4692     buf1 += 2;  /* skip the cursor position */
4693     buf2 += 2;
4694     for(i = 26; i < MODE_PARAM_SIZE; ++i) {
4695 	if (*buf1++ != *buf2++)
4696 	    return COMP_DIFFERENT;
4697     }
4698     return COMP_IDENTICAL;
4699 #endif
4700 }
4701 
4702 static void
4703 dump_vgaregs(u_char *buf)
4704 {
4705     int i;
4706 
4707     for(i = 0; i < MODE_PARAM_SIZE;) {
4708 	printf("%02x ", buf[i]);
4709 	if ((++i % 16) == 0)
4710 	    printf("\n");
4711     }
4712 }
4713 
4714 static void
4715 set_font_mode(u_char *buf)
4716 {
4717     int s = splhigh();
4718 
4719     font_loading_in_progress = TRUE;
4720 
4721     /* save register values */
4722     outb(TSIDX, 0x02); buf[0] = inb(TSREG);
4723     outb(TSIDX, 0x04); buf[1] = inb(TSREG);
4724     outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
4725     outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
4726     outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
4727     inb(crtc_addr + 6);
4728     outb(ATC, 0x10); buf[5] = inb(ATC + 1);
4729 
4730     /* setup vga for loading fonts */
4731     inb(crtc_addr+6);           		/* reset flip-flop */
4732     outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
4733     inb(crtc_addr+6);               		/* reset flip-flop */
4734     outb(ATC, 0x20);            		/* enable palette */
4735 
4736 #if SLOW_VGA
4737     outb(TSIDX, 0x00); outb(TSREG, 0x01);
4738     outb(TSIDX, 0x02); outb(TSREG, 0x04);
4739     outb(TSIDX, 0x04); outb(TSREG, 0x07);
4740     outb(TSIDX, 0x00); outb(TSREG, 0x03);
4741     outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
4742     outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
4743     outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
4744 #else
4745     outw(TSIDX, 0x0100);
4746     outw(TSIDX, 0x0402);
4747     outw(TSIDX, 0x0704);
4748     outw(TSIDX, 0x0300);
4749     outw(GDCIDX, 0x0204);
4750     outw(GDCIDX, 0x0005);
4751     outw(GDCIDX, 0x0406);               /* addr = a0000, 64kb */
4752 #endif
4753     splx(s);
4754 }
4755 
4756 static void
4757 set_normal_mode(u_char *buf)
4758 {
4759     char *modetable;
4760     int s = splhigh();
4761 
4762     /* setup vga for normal operation mode again */
4763     inb(crtc_addr+6);           		/* reset flip-flop */
4764     outb(ATC, 0x10); outb(ATC, buf[5]);
4765     inb(crtc_addr+6);               		/* reset flip-flop */
4766     outb(ATC, 0x20);            		/* enable palette */
4767 
4768 #if SLOW_VGA
4769     outb(TSIDX, 0x00); outb(TSREG, 0x01);
4770     outb(TSIDX, 0x02); outb(TSREG, buf[0]);
4771     outb(TSIDX, 0x04); outb(TSREG, buf[1]);
4772     outb(TSIDX, 0x00); outb(TSREG, 0x03);
4773     outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
4774     outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
4775     if (crtc_addr == MONO_BASE) {
4776 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
4777     } else {
4778 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
4779     }
4780 #else
4781     outw(TSIDX, 0x0100);
4782     outw(TSIDX, 0x0002 | (buf[0] << 8));
4783     outw(TSIDX, 0x0004 | (buf[1] << 8));
4784     outw(TSIDX, 0x0300);
4785     outw(GDCIDX, 0x0004 | (buf[2] << 8));
4786     outw(GDCIDX, 0x0005 | (buf[3] << 8));
4787     if (crtc_addr == MONO_BASE)
4788         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
4789     else
4790         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
4791 #endif
4792 
4793     font_loading_in_progress = FALSE;
4794     splx(s);
4795 }
4796 
4797 void
4798 copy_font(int operation, int font_type, char* font_image)
4799 {
4800     int ch, line, segment, fontsize;
4801     u_char buf[PARAM_BUFSIZE];
4802     u_char val;
4803 
4804     switch (font_type) {
4805     default:
4806     case FONT_8:
4807 	segment = 0x8000;
4808 	fontsize = 8;
4809 	break;
4810     case FONT_14:
4811 	segment = 0x4000;
4812 	fontsize = 14;
4813 	break;
4814     case FONT_16:
4815 	segment = 0x0000;
4816 	fontsize = 16;
4817 	break;
4818     }
4819     /*
4820      * FONT KLUDGE
4821      * Always use the font page #0. XXX
4822      */
4823     segment = 0x0000;
4824     outb(TSIDX, 0x01); val = inb(TSREG);        /* disable screen */
4825     outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
4826     set_font_mode(buf);
4827     for (ch=0; ch < 256; ch++)
4828 	for (line=0; line < fontsize; line++)
4829 	if (operation)
4830 	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line) =
4831 		    font_image[(ch*fontsize)+line];
4832 	else
4833 	    font_image[(ch*fontsize)+line] =
4834 	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line);
4835     set_normal_mode(buf);
4836     outb(TSIDX, 0x01); outb(TSREG, val & 0xDF); /* enable screen */
4837 }
4838 
4839 static void
4840 set_destructive_cursor(scr_stat *scp)
4841 {
4842     u_char buf[PARAM_BUFSIZE];
4843     u_char cursor[32];
4844     caddr_t address;
4845     int i;
4846     char *font_buffer;
4847 
4848     if (scp->font_size < 14) {
4849 	font_buffer = font_8;
4850 	address = (caddr_t)VIDEOMEM + 0x8000;
4851     }
4852     else if (scp->font_size >= 16) {
4853 	font_buffer = font_16;
4854 	address = (caddr_t)VIDEOMEM;
4855     }
4856     else {
4857 	font_buffer = font_14;
4858 	address = (caddr_t)VIDEOMEM + 0x4000;
4859     }
4860     /*
4861      * FONT KLUDGE
4862      * Always use the font page #0. XXX
4863      */
4864     address = (caddr_t)VIDEOMEM;
4865 
4866     if (scp->status & MOUSE_VISIBLE) {
4867 	if ((scp->cursor_saveunder & 0xff) == SC_MOUSE_CHAR)
4868     	    bcopy(&scp->mouse_cursor[0], cursor, scp->font_size);
4869 	else if ((scp->cursor_saveunder & 0xff) == SC_MOUSE_CHAR + 1)
4870     	    bcopy(&scp->mouse_cursor[32], cursor, scp->font_size);
4871 	else if ((scp->cursor_saveunder & 0xff) == SC_MOUSE_CHAR + 2)
4872     	    bcopy(&scp->mouse_cursor[64], cursor, scp->font_size);
4873 	else if ((scp->cursor_saveunder & 0xff) == SC_MOUSE_CHAR + 3)
4874     	    bcopy(&scp->mouse_cursor[96], cursor, scp->font_size);
4875 	else
4876 	    bcopy(font_buffer+((scp->cursor_saveunder & 0xff)*scp->font_size),
4877  	       	   cursor, scp->font_size);
4878     }
4879     else
4880     	bcopy(font_buffer + ((scp->cursor_saveunder & 0xff) * scp->font_size),
4881  	       cursor, scp->font_size);
4882     for (i=0; i<32; i++)
4883 	if ((i >= scp->cursor_start && i <= scp->cursor_end) ||
4884 	    (scp->cursor_start >= scp->font_size && i == scp->font_size - 1))
4885 	    cursor[i] |= 0xff;
4886 #if 1
4887     while (!(inb(crtc_addr+6) & 0x08)) /* wait for vertical retrace */ ;
4888 #endif
4889     set_font_mode(buf);
4890     generic_bcopy(cursor, (char *)pa_to_va(address) + DEAD_CHAR * 32, 32);
4891     set_normal_mode(buf);
4892 }
4893 
4894 static void
4895 set_mouse_pos(scr_stat *scp)
4896 {
4897     static int last_xpos = -1, last_ypos = -1;
4898 
4899     if (scp->mouse_xpos < 0)
4900 	scp->mouse_xpos = 0;
4901     if (scp->mouse_ypos < 0)
4902 	scp->mouse_ypos = 0;
4903     if (scp->status & UNKNOWN_MODE) {
4904         if (scp->mouse_xpos > scp->xpixel-1)
4905 	    scp->mouse_xpos = scp->xpixel-1;
4906         if (scp->mouse_ypos > scp->ypixel-1)
4907 	    scp->mouse_ypos = scp->ypixel-1;
4908 	return;
4909     }
4910     if (scp->mouse_xpos > (scp->xsize*8)-1)
4911 	scp->mouse_xpos = (scp->xsize*8)-1;
4912     if (scp->mouse_ypos > (scp->ysize*scp->font_size)-1)
4913 	scp->mouse_ypos = (scp->ysize*scp->font_size)-1;
4914 
4915     if (scp->mouse_xpos != last_xpos || scp->mouse_ypos != last_ypos) {
4916 	scp->status |= MOUSE_MOVED;
4917 
4918     	scp->mouse_pos = scp->scr_buf +
4919 	    ((scp->mouse_ypos/scp->font_size)*scp->xsize + scp->mouse_xpos/8);
4920 
4921 	if ((scp->status & MOUSE_VISIBLE) && (scp->status & MOUSE_CUTTING))
4922 	    mouse_cut(scp);
4923     }
4924 }
4925 
4926 #define isspace(c)	(((c) & 0xff) == ' ')
4927 
4928 static int
4929 skip_spc_right(scr_stat *scp, u_short *p)
4930 {
4931     int i;
4932 
4933     for (i = (p - scp->scr_buf) % scp->xsize; i < scp->xsize; ++i) {
4934 	if (!isspace(*p))
4935 	    break;
4936 	++p;
4937     }
4938     return i;
4939 }
4940 
4941 static int
4942 skip_spc_left(scr_stat *scp, u_short *p)
4943 {
4944     int i;
4945 
4946     for (i = (p-- - scp->scr_buf) % scp->xsize - 1; i >= 0; --i) {
4947 	if (!isspace(*p))
4948 	    break;
4949 	--p;
4950     }
4951     return i;
4952 }
4953 
4954 static void
4955 mouse_cut(scr_stat *scp)
4956 {
4957     u_short *end;
4958     u_short *p;
4959     int i = 0;
4960     int j = 0;
4961 
4962     scp->mouse_cut_end = (scp->mouse_pos >= scp->mouse_cut_start) ?
4963 	scp->mouse_pos + 1 : scp->mouse_pos;
4964     end = (scp->mouse_cut_start > scp->mouse_cut_end) ?
4965 	scp->mouse_cut_start : scp->mouse_cut_end;
4966     for (p = (scp->mouse_cut_start > scp->mouse_cut_end) ?
4967 	    scp->mouse_cut_end : scp->mouse_cut_start; p < end; ++p) {
4968 	cut_buffer[i] = *p & 0xff;
4969 	/* remember the position of the last non-space char */
4970 	if (!isspace(cut_buffer[i++]))
4971 	    j = i;
4972 	/* trim trailing blank when crossing lines */
4973 	if (((p - scp->scr_buf) % scp->xsize) == (scp->xsize - 1)) {
4974 	    cut_buffer[j++] = '\n';
4975 	    i = j;
4976 	}
4977     }
4978     cut_buffer[i] = '\0';
4979 
4980     /* scan towards the end of the last line */
4981     --p;
4982     for (i = (p - scp->scr_buf) % scp->xsize; i < scp->xsize; ++i) {
4983 	if (!isspace(*p))
4984 	    break;
4985 	++p;
4986     }
4987     /* if there is nothing but blank chars, trim them, but mark towards eol */
4988     if (i >= scp->xsize) {
4989 	if (scp->mouse_cut_start > scp->mouse_cut_end)
4990 	    scp->mouse_cut_start = p;
4991 	else
4992 	    scp->mouse_cut_end = p;
4993 	cut_buffer[j++] = '\n';
4994 	cut_buffer[j] = '\0';
4995     }
4996 
4997     mark_for_update(scp, scp->mouse_cut_start - scp->scr_buf);
4998     mark_for_update(scp, scp->mouse_cut_end - scp->scr_buf);
4999 }
5000 
5001 static void
5002 mouse_cut_start(scr_stat *scp)
5003 {
5004     int i;
5005 
5006     if (scp->status & MOUSE_VISIBLE) {
5007 	if (scp->mouse_pos == scp->mouse_cut_start &&
5008 	    scp->mouse_cut_start == scp->mouse_cut_end - 1) {
5009 	    cut_buffer[0] = '\0';
5010 	    remove_cutmarking(scp);
5011 	} else if (skip_spc_right(scp, scp->mouse_pos) >= scp->xsize) {
5012 	    /* if the pointer is on trailing blank chars, mark towards eol */
5013 	    i = skip_spc_left(scp, scp->mouse_pos) + 1;
5014 	    scp->mouse_cut_start = scp->scr_buf +
5015 	        ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize + i;
5016 	    scp->mouse_cut_end = scp->scr_buf +
5017 	        ((scp->mouse_pos - scp->scr_buf) / scp->xsize + 1) * scp->xsize;
5018 	    cut_buffer[0] = '\n';
5019 	    cut_buffer[1] = '\0';
5020 	    scp->status |= MOUSE_CUTTING;
5021 	} else {
5022 	    scp->mouse_cut_start = scp->mouse_pos;
5023 	    scp->mouse_cut_end = scp->mouse_cut_start + 1;
5024 	    cut_buffer[0] = *scp->mouse_cut_start & 0xff;
5025 	    cut_buffer[1] = '\0';
5026 	    scp->status |= MOUSE_CUTTING;
5027 	}
5028     	mark_all(scp);
5029 	/* delete all other screens cut markings */
5030 	for (i=0; i<MAXCONS; i++) {
5031 	    if (console[i] == NULL || console[i] == scp)
5032 		continue;
5033 	    remove_cutmarking(console[i]);
5034 	}
5035     }
5036 }
5037 
5038 static void
5039 mouse_cut_end(scr_stat *scp)
5040 {
5041     if (scp->status & MOUSE_VISIBLE) {
5042 	scp->status &= ~MOUSE_CUTTING;
5043     }
5044 }
5045 
5046 static void
5047 mouse_cut_word(scr_stat *scp)
5048 {
5049     u_short *p;
5050     u_short *sol;
5051     u_short *eol;
5052     int i;
5053 
5054     /*
5055      * Because we don't have locale information in the kernel,
5056      * we only distinguish space char and non-space chars.  Punctuation
5057      * chars, symbols and other regular chars are all treated alike.
5058      */
5059     if (scp->status & MOUSE_VISIBLE) {
5060 	sol = scp->scr_buf
5061 	    + ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize;
5062 	eol = sol + scp->xsize;
5063 	if (isspace(*scp->mouse_pos)) {
5064 	    for (p = scp->mouse_pos; p >= sol; --p)
5065 	        if (!isspace(*p))
5066 		    break;
5067 	    scp->mouse_cut_start = ++p;
5068 	    for (p = scp->mouse_pos; p < eol; ++p)
5069 	        if (!isspace(*p))
5070 		    break;
5071 	    scp->mouse_cut_end = p;
5072 	} else {
5073 	    for (p = scp->mouse_pos; p >= sol; --p)
5074 	        if (isspace(*p))
5075 		    break;
5076 	    scp->mouse_cut_start = ++p;
5077 	    for (p = scp->mouse_pos; p < eol; ++p)
5078 	        if (isspace(*p))
5079 		    break;
5080 	    scp->mouse_cut_end = p;
5081 	}
5082 	for (i = 0, p = scp->mouse_cut_start; p < scp->mouse_cut_end; ++p)
5083 	    cut_buffer[i++] = *p & 0xff;
5084 	cut_buffer[i] = '\0';
5085 	scp->status |= MOUSE_CUTTING;
5086     }
5087 }
5088 
5089 static void
5090 mouse_cut_line(scr_stat *scp)
5091 {
5092     u_short *p;
5093     int i;
5094 
5095     if (scp->status & MOUSE_VISIBLE) {
5096 	scp->mouse_cut_start = scp->scr_buf
5097 	    + ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize;
5098 	scp->mouse_cut_end = scp->mouse_cut_start + scp->xsize;
5099 	for (i = 0, p = scp->mouse_cut_start; p < scp->mouse_cut_end; ++p)
5100 	    cut_buffer[i++] = *p & 0xff;
5101 	cut_buffer[i++] = '\n';
5102 	cut_buffer[i] = '\0';
5103 	scp->status |= MOUSE_CUTTING;
5104     }
5105 }
5106 
5107 static void
5108 mouse_cut_extend(scr_stat *scp)
5109 {
5110     if ((scp->status & MOUSE_VISIBLE) && !(scp->status & MOUSE_CUTTING)
5111 	&& (scp->mouse_cut_start != NULL)) {
5112 	mouse_cut(scp);
5113 	scp->status |= MOUSE_CUTTING;
5114     }
5115 }
5116 
5117 static void
5118 mouse_paste(scr_stat *scp)
5119 {
5120     if (scp->status & MOUSE_VISIBLE) {
5121 	struct tty *tp;
5122 	u_char *ptr = cut_buffer;
5123 
5124 	tp = VIRTUAL_TTY(get_scr_num());
5125 	while (*ptr)
5126 	    (*linesw[tp->t_line].l_rint)(scr_rmap[*ptr++], tp);
5127     }
5128 }
5129 
5130 static void
5131 draw_mouse_image(scr_stat *scp)
5132 {
5133     caddr_t address;
5134     int i;
5135     char *font_buffer;
5136     u_char buf[PARAM_BUFSIZE];
5137     u_short buffer[32];
5138     u_short xoffset, yoffset;
5139     u_short *crt_pos = Crtat + (scp->mouse_pos - scp->scr_buf);
5140     int font_size = scp->font_size;
5141 
5142     if (font_size < 14) {
5143 	font_buffer = font_8;
5144 	address = (caddr_t)VIDEOMEM + 0x8000;
5145     }
5146     else if (font_size >= 16) {
5147 	font_buffer = font_16;
5148 	address = (caddr_t)VIDEOMEM;
5149     }
5150     else {
5151 	font_buffer = font_14;
5152 	address = (caddr_t)VIDEOMEM + 0x4000;
5153     }
5154     /*
5155      * FONT KLUDGE
5156      * Always use the font page #0. XXX
5157      */
5158     address = (caddr_t)VIDEOMEM;
5159 
5160     xoffset = scp->mouse_xpos % 8;
5161     yoffset = scp->mouse_ypos % font_size;
5162 
5163     /* prepare mousepointer char's bitmaps */
5164     bcopy(font_buffer + ((*(scp->mouse_pos) & 0xff) * font_size),
5165 	   &scp->mouse_cursor[0], font_size);
5166     bcopy(font_buffer + ((*(scp->mouse_pos+1) & 0xff) * font_size),
5167 	   &scp->mouse_cursor[32], font_size);
5168     bcopy(font_buffer + ((*(scp->mouse_pos+scp->xsize) & 0xff) * font_size),
5169 	   &scp->mouse_cursor[64], font_size);
5170     bcopy(font_buffer + ((*(scp->mouse_pos+scp->xsize+1) & 0xff) * font_size),
5171 	   &scp->mouse_cursor[96], font_size);
5172     for (i=0; i<font_size; i++) {
5173 	buffer[i] = scp->mouse_cursor[i]<<8 | scp->mouse_cursor[i+32];
5174 	buffer[i+font_size]=scp->mouse_cursor[i+64]<<8|scp->mouse_cursor[i+96];
5175     }
5176 
5177     /* now and-or in the mousepointer image */
5178     for (i=0; i<16; i++) {
5179 	buffer[i+yoffset] =
5180 	    ( buffer[i+yoffset] & ~(mouse_and_mask[i] >> xoffset))
5181 	    | (mouse_or_mask[i] >> xoffset);
5182     }
5183     for (i=0; i<font_size; i++) {
5184 	scp->mouse_cursor[i] = (buffer[i] & 0xff00) >> 8;
5185 	scp->mouse_cursor[i+32] = buffer[i] & 0xff;
5186 	scp->mouse_cursor[i+64] = (buffer[i+font_size] & 0xff00) >> 8;
5187 	scp->mouse_cursor[i+96] = buffer[i+font_size] & 0xff;
5188     }
5189 
5190     scp->mouse_oldpos = scp->mouse_pos;
5191 
5192 #if 1
5193     /* wait for vertical retrace to avoid jitter on some videocards */
5194     while (!(inb(crtc_addr+6) & 0x08)) /* idle */ ;
5195 #endif
5196     set_font_mode(buf);
5197     generic_bcopy(scp->mouse_cursor, (char *)pa_to_va(address) + SC_MOUSE_CHAR * 32, 128);
5198     set_normal_mode(buf);
5199     *(crt_pos) = (*(scp->mouse_pos) & 0xff00) | SC_MOUSE_CHAR;
5200     *(crt_pos+scp->xsize) =
5201 	(*(scp->mouse_pos + scp->xsize) & 0xff00) | (SC_MOUSE_CHAR + 2);
5202     if (scp->mouse_xpos < (scp->xsize-1)*8) {
5203     	*(crt_pos + 1) = (*(scp->mouse_pos + 1) & 0xff00) | (SC_MOUSE_CHAR + 1);
5204     	*(crt_pos+scp->xsize + 1) =
5205 	    (*(scp->mouse_pos + scp->xsize + 1) & 0xff00) | (SC_MOUSE_CHAR + 3);
5206     }
5207     mark_for_update(scp, scp->mouse_pos - scp->scr_buf);
5208     mark_for_update(scp, scp->mouse_pos + scp->xsize + 1 - scp->scr_buf);
5209 }
5210 
5211 static void
5212 remove_mouse_image(scr_stat *scp)
5213 {
5214     u_short *crt_pos = Crtat + (scp->mouse_oldpos - scp->scr_buf);
5215 
5216     *(crt_pos) = *(scp->mouse_oldpos);
5217     *(crt_pos+1) = *(scp->mouse_oldpos+1);
5218     *(crt_pos+scp->xsize) = *(scp->mouse_oldpos+scp->xsize);
5219     *(crt_pos+scp->xsize+1) = *(scp->mouse_oldpos+scp->xsize+1);
5220     mark_for_update(scp, scp->mouse_oldpos - scp->scr_buf);
5221     mark_for_update(scp, scp->mouse_oldpos + scp->xsize + 1 - scp->scr_buf);
5222 }
5223 
5224 static void
5225 draw_cutmarking(scr_stat *scp)
5226 {
5227     u_short *ptr;
5228     u_short och, nch;
5229 
5230     for (ptr=scp->scr_buf; ptr<=(scp->scr_buf+(scp->xsize*scp->ysize)); ptr++) {
5231 	nch = och = *(Crtat + (ptr - scp->scr_buf));
5232 	/* are we outside the selected area ? */
5233 	if ( ptr < (scp->mouse_cut_start > scp->mouse_cut_end ?
5234 	            scp->mouse_cut_end : scp->mouse_cut_start) ||
5235 	     ptr >= (scp->mouse_cut_start > scp->mouse_cut_end ?
5236 	            scp->mouse_cut_start : scp->mouse_cut_end)) {
5237 	    if (ptr != scp->cursor_pos)
5238 		nch = (och & 0xff) | (*ptr & 0xff00);
5239 	}
5240 	else {
5241 	    /* are we clear of the cursor image ? */
5242 	    if (ptr != scp->cursor_pos)
5243 		nch = (och & 0x88ff) | (*ptr & 0x7000)>>4 | (*ptr & 0x0700)<<4;
5244 	    else {
5245 		if (flags & CHAR_CURSOR)
5246 		    nch = (och & 0x88ff)|(*ptr & 0x7000)>>4|(*ptr & 0x0700)<<4;
5247 		else
5248 		    if (!(flags & BLINK_CURSOR))
5249 		        nch = (och & 0xff) | (*ptr & 0xff00);
5250 	    }
5251 	}
5252 	if (nch != och)
5253 	    *(Crtat + (ptr - scp->scr_buf)) = nch;
5254     }
5255 }
5256 
5257 static void
5258 remove_cutmarking(scr_stat *scp)
5259 {
5260     scp->mouse_cut_start = scp->mouse_cut_end = NULL;
5261     scp->status &= ~MOUSE_CUTTING;
5262     mark_all(scp);
5263 }
5264 
5265 static void
5266 save_palette(void)
5267 {
5268     int i;
5269 
5270     outb(PALRADR, 0x00);
5271     for (i=0x00; i<0x300; i++)
5272 	palette[i] = inb(PALDATA);
5273     inb(crtc_addr+6);           /* reset flip/flop */
5274 }
5275 
5276 void
5277 load_palette(char *palette)
5278 {
5279     int i;
5280 
5281     outb(PIXMASK, 0xFF);            /* no pixelmask */
5282     outb(PALWADR, 0x00);
5283     for (i=0x00; i<0x300; i++)
5284 	 outb(PALDATA, palette[i]);
5285     inb(crtc_addr+6);           /* reset flip/flop */
5286     outb(ATC, 0x20);            /* enable palette */
5287 }
5288 
5289 static void
5290 do_bell(scr_stat *scp, int pitch, int duration)
5291 {
5292     if (cold || shutdown_in_progress)
5293 	return;
5294 
5295     if (scp != cur_console && (flags & QUIET_BELL))
5296 	return;
5297 
5298     if (flags & VISUAL_BELL) {
5299 	if (blink_in_progress)
5300 	    return;
5301 	blink_in_progress = 4;
5302 	if (scp != cur_console)
5303 	    blink_in_progress += 2;
5304 	blink_screen(cur_console);
5305     } else {
5306 	if (scp != cur_console)
5307 	    pitch *= 2;
5308 	sysbeep(pitch, duration);
5309     }
5310 }
5311 
5312 static void
5313 blink_screen(void *arg)
5314 {
5315     scr_stat *scp = arg;
5316 
5317     if ((scp->status & UNKNOWN_MODE) || (blink_in_progress <= 1)) {
5318 	blink_in_progress = FALSE;
5319     	mark_all(scp);
5320 	if (delayed_next_scr)
5321 	    switch_scr(scp, delayed_next_scr - 1);
5322     }
5323     else {
5324 	if (blink_in_progress & 1)
5325 	    fillw(kernel_default.std_color | scr_map[0x20],
5326 		  Crtat, scp->xsize * scp->ysize);
5327 	else
5328 	    fillw(kernel_default.rev_color | scr_map[0x20],
5329 		  Crtat, scp->xsize * scp->ysize);
5330 	blink_in_progress--;
5331 	timeout(blink_screen, scp, hz / 10);
5332     }
5333 }
5334 
5335 void
5336 sc_bcopy(scr_stat *scp, u_short *p, int from, int to, int mark)
5337 {
5338     if (!VESA_MODE(scp->mode)) {
5339 	generic_bcopy(p+from, Crtat+from, (to-from+1)*sizeof (u_short));
5340     } else if (scp->mode == 0x102) {
5341 	u_char *d, *e;
5342 	int i,j;
5343 
5344 	if (mark)
5345 		mark = 255;
5346 	d = (u_char *)Crtat;
5347 	d += 10 + 6*16*100 + (from%80) + 16*100*(from/80);
5348 	for (i = from ; i <= to ; i++) {
5349 	    e = d;
5350 	    for (j = 0 ; j < 16; j++) {
5351 	        *e = mark^font_16[(p[i]&0xff)*16+j];
5352 		e+=100;
5353 	    }
5354 	    d++;
5355 	    if ((i % 80) == 79)
5356 		d += 20 + 15*100;
5357 	}
5358     }
5359 }
5360 
5361 #ifdef SC_SPLASH_SCREEN
5362 
5363 static void
5364 scsplash_init(void)
5365 {
5366     /*
5367      * We currently assume the splash screen always use
5368      * VGA_CG320 mode and abort installation if this mode is not
5369      * supported with this video card. XXX
5370      */
5371     if (crtc_type != KD_VGA || get_mode_param(cur_console, M_VGA_CG320) == NULL)
5372 	return;
5373 
5374     if (splash_load() == 0 && add_scrn_saver(scsplash) == 0) {
5375 	default_saver = scsplash;
5376 	scrn_blank_time = DEFAULT_BLANKTIME;
5377 	run_scrn_saver = TRUE;
5378 	if (!(boothowto & RB_CONFIG)) {
5379 	    scsplash_stick(TRUE);
5380 	    scsplash(TRUE);
5381 	}
5382     }
5383 }
5384 
5385 static void
5386 scsplash(int show)
5387 {
5388     if (show)
5389 	splash(TRUE);
5390     else if (!sticky_splash)
5391 	splash(FALSE);
5392 }
5393 
5394 #endif /* SC_SPLASH_SCREEN */
5395 
5396 #endif /* NSC */
5397