syscons.c revision 32457
117683Spst/*-
239291Sfenner * Copyright (c) 1992-1997 S�ren Schmidt
317683Spst * All rights reserved.
417683Spst *
517683Spst * Redistribution and use in source and binary forms, with or without
617683Spst * modification, are permitted provided that the following conditions
717683Spst * are met:
817683Spst * 1. Redistributions of source code must retain the above copyright
917683Spst *    notice, this list of conditions and the following disclaimer
1017683Spst *    in this position and unchanged.
1117683Spst * 2. Redistributions in binary form must reproduce the above copyright
1217683Spst *    notice, this list of conditions and the following disclaimer in the
1317683Spst *    documentation and/or other materials provided with the distribution.
1417683Spst * 3. The name of the author may not be used to endorse or promote products
1517683Spst *    derived from this software withough specific prior written permission
1617683Spst *
1717683Spst * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1817683Spst * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1917683Spst * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2017683Spst * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
2117683Spst * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2217683Spst * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2317683Spst * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2417683Spst * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2517683Spst * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2617683Spst * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2717683Spst *
2817683Spst *  $Id: syscons.c,v 1.244 1998/01/09 09:06:55 yokota Exp $
2917683Spst */
3017683Spst
3117683Spst#include "sc.h"
3217683Spst#include "apm.h"
3317683Spst#include "opt_ddb.h"
3417683Spst#include "opt_syscons.h"
3526175Sfenner
3698530Sfenner#if NSC > 0
3717683Spst#include <sys/param.h>
3817683Spst#include <sys/systm.h>
3975107Sfenner#include <sys/conf.h>
4075107Sfenner#include <sys/proc.h>
4175107Sfenner#include <sys/signalvar.h>
4275107Sfenner#include <sys/tty.h>
4317683Spst#include <sys/kernel.h>
4417683Spst#include <sys/malloc.h>
4517683Spst#ifdef	DEVFS
4617683Spst#include <sys/devfsext.h>
4717683Spst#endif
4817683Spst
4998530Sfenner#include <machine/clock.h>
5098530Sfenner#include <machine/cons.h>
5117683Spst#include <machine/console.h>
5217683Spst#include <machine/mouse.h>
5317683Spst#include <machine/md_var.h>
5417683Spst#include <machine/psl.h>
5517683Spst#include <machine/frame.h>
5617683Spst#include <machine/pc/display.h>
5717683Spst#include <machine/apm_bios.h>
5817683Spst#include <machine/random.h>
5917683Spst
6017683Spst#include <vm/vm.h>
6117683Spst#include <vm/vm_param.h>
6217683Spst#include <vm/pmap.h>
6317683Spst
6439291Sfenner#include <i386/isa/isa.h>
6517683Spst#include <i386/isa/isa_device.h>
6617683Spst#include <i386/isa/timerreg.h>
6717683Spst#include <i386/isa/kbdtables.h>
6817683Spst#include <i386/isa/kbdio.h>
6917683Spst#include <i386/isa/syscons.h>
7039291Sfenner
7139291Sfenner#if !defined(MAXCONS)
7217683Spst#define MAXCONS 16
7339291Sfenner#endif
7439291Sfenner
7539291Sfenner#if !defined(SC_MAX_HISTORY_SIZE)
7639291Sfenner#define SC_MAX_HISTORY_SIZE	(1000 * MAXCONS)
7739291Sfenner#endif
7839291Sfenner
7939291Sfenner#if !defined(SC_HISTORY_SIZE)
8039291Sfenner#define SC_HISTORY_SIZE		(ROW * 4)
8139291Sfenner#endif
8239291Sfenner
8339291Sfenner#if (SC_HISTORY_SIZE * MAXCONS) > SC_MAX_HISTORY_SIZE
8417683Spst#undef SC_MAX_HISTORY_SIZE
8517683Spst#define SC_MAX_HISTORY_SIZE	(SC_HISTORY_SIZE * MAXCONS)
8617683Spst#endif
8717683Spst
8817683Spst#define COLD 0
8917683Spst#define WARM 1
9017683Spst
9117683Spst#define MODE_MAP_SIZE		(M_VGA_CG320 + 1)
9217683Spst#define MODE_PARAM_SIZE		64
9317683Spst
9417683Spst/* XXX use sc_bcopy where video memory is concerned */
9517683Spst#define sc_bcopy generic_bcopy
9617683Spstextern void generic_bcopy(const void *, void *, size_t);
9717683Spst
9817683Spststatic default_attr user_default = {
9917683Spst    (FG_LIGHTGREY | BG_BLACK) << 8,
10017683Spst    (FG_BLACK | BG_LIGHTGREY) << 8
10117683Spst};
10217683Spst
10317683Spststatic default_attr kernel_default = {
10417683Spst    (FG_WHITE | BG_BLACK) << 8,
10517683Spst    (FG_BLACK | BG_LIGHTGREY) << 8
10617683Spst};
10717683Spst
10817683Spststatic  scr_stat    	main_console;
10917683Spststatic  scr_stat    	*console[MAXCONS];
11017683Spst#ifdef DEVFS
11117683Spststatic	void		*sc_devfs_token[MAXCONS];
11217683Spststatic	void		*sc_mouse_devfs_token;
11317683Spststatic	void		*sc_console_devfs_token;
11417683Spst#endif
11517683Spst	scr_stat    	*cur_console;
11617683Spststatic  scr_stat    	*new_scp, *old_scp;
11717683Spststatic  term_stat   	kernel_console;
11817683Spststatic  default_attr    *current_default;
11917683Spststatic  int     	flags = 0;
12017683Spststatic  int		sc_port = IO_KBD;
12117683Spststatic  KBDC		sc_kbdc = NULL;
12217683Spststatic  char        	init_done = COLD;
12317683Spststatic  u_short		sc_buffer[ROW*COL];
12417683Spststatic  char        	switch_in_progress = FALSE;
12517683Spststatic  char        	write_in_progress = FALSE;
12617683Spststatic  char        	blink_in_progress = FALSE;
12717683Spststatic  int        	blinkrate = 0;
12817683Spst	u_int       	crtc_addr = MONO_BASE;
12917683Spst	char		crtc_type = KD_MONO;
13017683Spst	char        	crtc_vga = FALSE;
13117683Spststatic  u_char      	shfts = 0, ctls = 0, alts = 0, agrs = 0, metas = 0;
13217683Spststatic  u_char		accents = 0;
13317683Spststatic  u_char      	nlkcnt = 0, clkcnt = 0, slkcnt = 0, alkcnt = 0;
13417683Spststatic  const u_int     n_fkey_tab = sizeof(fkey_tab) / sizeof(*fkey_tab);
13517683Spststatic  int     	delayed_next_scr = FALSE;
13617683Spststatic  long        	scrn_blank_time = 0;    /* screen saver timeout value */
13717683Spst	int     	scrn_blanked = 0;       /* screen saver active flag */
13817683Spststatic  long       	scrn_time_stamp;
13917683Spst	u_char      	scr_map[256];
14017683Spst	u_char      	scr_rmap[256];
14117683Spst	char        	*video_mode_ptr = NULL;
14217683Spst	int     	fonts_loaded = 0
14317683Spst#ifdef STD8X16FONT
14417683Spst	| FONT_16
14517683Spst#endif
14617683Spst	;
14717683Spst
14817683Spst	char        	font_8[256*8];
14917683Spst	char		font_14[256*14];
15017683Spst#ifdef STD8X16FONT
15117683Spstextern
15217683Spst#endif
15317683Spst	unsigned char	font_16[256*16];
15417683Spst	char        	palette[256*3];
15517683Spststatic  char		*mode_map[MODE_MAP_SIZE];
15617683Spststatic  char		vgaregs[MODE_PARAM_SIZE];
15717683Spststatic  char		vgaregs2[MODE_PARAM_SIZE];
15817683Spststatic  int		rows_offset = 1;
15917683Spststatic	char 		*cut_buffer;
16017683Spststatic	int		mouse_level = 0;	/* sysmouse protocol level */
16117683Spststatic	mousestatus_t	mouse_status = { 0, 0, 0, 0, 0, 0 };
16217683Spststatic  u_short 	mouse_and_mask[16] = {
16317683Spst				0xc000, 0xe000, 0xf000, 0xf800,
16417683Spst				0xfc00, 0xfe00, 0xff00, 0xff80,
16517683Spst				0xfe00, 0x1e00, 0x1f00, 0x0f00,
16617683Spst				0x0f00, 0x0000, 0x0000, 0x0000
16717683Spst			};
16817683Spststatic  u_short 	mouse_or_mask[16] = {
16917683Spst				0x0000, 0x4000, 0x6000, 0x7000,
17017683Spst				0x7800, 0x7c00, 0x7e00, 0x6800,
17117683Spst				0x0c00, 0x0c00, 0x0600, 0x0600,
17217683Spst				0x0000, 0x0000, 0x0000, 0x0000
17317683Spst			};
17498530Sfenner
17598530Sfennerstatic int		extra_history_size =
17698530Sfenner			    SC_MAX_HISTORY_SIZE - SC_HISTORY_SIZE * MAXCONS;
17798530Sfenner
17898530Sfennerstatic void    		none_saver(int blank) { }
17998530Sfennerstatic void    		(*current_saver)(int blank) = none_saver;
18098530Sfennerint  			(*sc_user_ioctl)(dev_t dev, int cmd, caddr_t data,
18198530Sfenner					 int flag, struct proc *p) = NULL;
18298530Sfenner
18398530Sfenner/* OS specific stuff */
18498530Sfenner#ifdef not_yet_done
18598530Sfenner#define VIRTUAL_TTY(x)  (sccons[x] = ttymalloc(sccons[x]))
18698530Sfennerstruct  CONSOLE_TTY 	(sccons[MAXCONS] = ttymalloc(sccons[MAXCONS]))
18798530Sfennerstruct  MOUSE_TTY 	(sccons[MAXCONS+1] = ttymalloc(sccons[MAXCONS+1]))
18898530Sfennerstruct  tty         	*sccons[MAXCONS+2];
18998530Sfenner#else
19098530Sfenner#define VIRTUAL_TTY(x)  &sccons[x]
19198530Sfenner#define CONSOLE_TTY 	&sccons[MAXCONS]
19298530Sfenner#define MOUSE_TTY 	&sccons[MAXCONS+1]
19398530Sfennerstatic struct tty     	sccons[MAXCONS+2];
19498530Sfenner#endif
19598530Sfenner#define SC_MOUSE 	128
19698530Sfenner#define SC_CONSOLE	255
19798530Sfenner#define MONO_BUF    	pa_to_va(0xB0000)
19898530Sfenner#define CGA_BUF     	pa_to_va(0xB8000)
19998530Sfenneru_short         	*Crtat;
20098530Sfennerstatic const int	nsccons = MAXCONS+2;
20198530Sfenner
20298530Sfenner#define WRAPHIST(scp, pointer, offset)\
20398530Sfenner    ((scp->history) + ((((pointer) - (scp->history)) + (scp->history_size)\
20498530Sfenner    + (offset)) % (scp->history_size)))
20598530Sfenner#define ISSIGVALID(sig)	((sig) > 0 && (sig) < NSIG)
20698530Sfenner
20798530Sfenner/* this should really be in `rtc.h' */
20898530Sfenner#define RTC_EQUIPMENT		0x14
20998530Sfenner
21098530Sfenner/* prototypes */
21198530Sfennerstatic int scattach(struct isa_device *dev);
21298530Sfennerstatic int scparam(struct tty *tp, struct termios *t);
21398530Sfennerstatic int scprobe(struct isa_device *dev);
21498530Sfennerstatic int scvidprobe(int unit, int flags);
21598530Sfennerstatic int sckbdprobe(int unit, int flags);
21698530Sfennerstatic void scstart(struct tty *tp);
21798530Sfennerstatic void scmousestart(struct tty *tp);
21898530Sfennerstatic void scinit(void);
21998530Sfennerstatic void map_mode_table(char *map[], char *table, int max);
22098530Sfennerstatic u_char map_mode_num(u_char mode);
22198530Sfennerstatic char *get_mode_param(scr_stat *scp, u_char mode);
22298530Sfennerstatic u_int scgetc(u_int flags);
22398530Sfenner#define SCGETC_CN	1
22498530Sfenner#define SCGETC_NONBLOCK	2
22598530Sfennerstatic scr_stat *get_scr_stat(dev_t dev);
22698530Sfennerstatic scr_stat *alloc_scp(void);
22798530Sfennerstatic void init_scp(scr_stat *scp);
22898530Sfennerstatic int get_scr_num(void);
22998530Sfennerstatic timeout_t scrn_timer;
23098530Sfennerstatic void stop_scrn_saver(void (*saver)(int));
23198530Sfennerstatic void clear_screen(scr_stat *scp);
23298530Sfennerstatic int switch_scr(scr_stat *scp, u_int next_scr);
23317683Spststatic void exchange_scr(void);
23417683Spststatic inline void move_crsr(scr_stat *scp, int x, int y);
23517683Spststatic void scan_esc(scr_stat *scp, u_char c);
23617683Spststatic void draw_cursor_image(scr_stat *scp);
23717683Spststatic void remove_cursor_image(scr_stat *scp);
23817683Spststatic void ansi_put(scr_stat *scp, u_char *buf, int len);
23917683Spststatic u_char *get_fstr(u_int c, u_int *len);
24017683Spststatic void history_to_screen(scr_stat *scp);
24117683Spststatic int history_up_line(scr_stat *scp);
24217683Spststatic int history_down_line(scr_stat *scp);
24317683Spststatic int mask2attr(struct term_stat *term);
24417683Spststatic void set_keyboard(int command, int data);
24517683Spststatic void update_leds(int which);
24617683Spststatic void set_vgaregs(char *modetable);
24775107Sfennerstatic void read_vgaregs(char *buf);
24817683Spst#define COMP_IDENTICAL	0
24917683Spst#define COMP_SIMILAR	1
25017683Spst#define COMP_DIFFERENT	2
25117683Spststatic int comp_vgaregs(u_char *buf1, u_char *buf2);
25275107Sfennerstatic void dump_vgaregs(u_char *buf);
25375107Sfenner#define PARAM_BUFSIZE	6
25475107Sfennerstatic void set_font_mode(u_char *buf);
25575107Sfennerstatic void set_normal_mode(u_char *buf);
25675107Sfennerstatic void set_destructive_cursor(scr_stat *scp);
25775107Sfennerstatic void set_mouse_pos(scr_stat *scp);
25875107Sfennerstatic int skip_spc_right(scr_stat *scp, u_short *p);
25975107Sfennerstatic int skip_spc_left(scr_stat *scp, u_short *p);
26075107Sfennerstatic void mouse_cut(scr_stat *scp);
26175107Sfennerstatic void mouse_cut_start(scr_stat *scp);
26275107Sfennerstatic void mouse_cut_end(scr_stat *scp);
26375107Sfennerstatic void mouse_cut_word(scr_stat *scp);
26475107Sfennerstatic void mouse_cut_line(scr_stat *scp);
26575107Sfennerstatic void mouse_cut_extend(scr_stat *scp);
26675107Sfennerstatic void mouse_paste(scr_stat *scp);
26717683Spststatic void draw_mouse_image(scr_stat *scp);
26817683Spststatic void remove_mouse_image(scr_stat *scp);
26917683Spststatic void draw_cutmarking(scr_stat *scp);
27017683Spststatic void remove_cutmarking(scr_stat *scp);
27175107Sfennerstatic void save_palette(void);
27275107Sfennerstatic void do_bell(scr_stat *scp, int pitch, int duration);
27375107Sfennerstatic timeout_t blink_screen;
27475107Sfenner#ifdef SC_SPLASH_SCREEN
27517683Spststatic void toggle_splash_screen(scr_stat *scp);
27675107Sfenner#endif
27717683Spst
27875107Sfennerstruct  isa_driver scdriver = {
27975107Sfenner    scprobe, scattach, "sc", 1
28017683Spst};
28117683Spst
28217683Spststatic	d_open_t	scopen;
28317683Spststatic	d_close_t	scclose;
28417683Spststatic	d_read_t	scread;
28575107Sfennerstatic	d_write_t	scwrite;
28617683Spststatic	d_ioctl_t	scioctl;
28717683Spststatic	d_devtotty_t	scdevtotty;
288static	d_mmap_t	scmmap;
289
290#define CDEV_MAJOR 12
291static	struct cdevsw	scdevsw = {
292	scopen,		scclose,	scread,		scwrite,
293	scioctl,	nullstop,	noreset,	scdevtotty,
294	ttpoll,		scmmap,		nostrategy,	"sc",	NULL,	-1 };
295
296/*
297 * These functions need to be before calls to them so they can be inlined.
298 */
299static inline void
300draw_cursor_image(scr_stat *scp)
301{
302    u_short cursor_image, *ptr = Crtat + (scp->cursor_pos - scp->scr_buf);
303    u_short prev_image;
304
305    /* do we have a destructive cursor ? */
306    if (flags & CHAR_CURSOR) {
307	prev_image = scp->cursor_saveunder;
308	cursor_image = *ptr & 0x00ff;
309	if (cursor_image == DEAD_CHAR)
310	    cursor_image = prev_image & 0x00ff;
311	cursor_image |= *(scp->cursor_pos) & 0xff00;
312	scp->cursor_saveunder = cursor_image;
313	/* update the cursor bitmap if the char under the cursor has changed */
314	if (prev_image != cursor_image)
315	    set_destructive_cursor(scp);
316	/* modify cursor_image */
317	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
318	    /*
319	     * When the mouse pointer is at the same position as the cursor,
320	     * the cursor bitmap needs to be updated even if the char under
321	     * the cursor hasn't changed, because the mouse pionter may
322	     * have moved by a few dots within the cursor cel.
323	     */
324	    if ((prev_image == cursor_image)
325		    && (cursor_image != *(scp->cursor_pos)))
326	        set_destructive_cursor(scp);
327	    cursor_image &= 0xff00;
328	    cursor_image |= DEAD_CHAR;
329	}
330    }
331    else {
332	cursor_image = (*(ptr) & 0x00ff) | *(scp->cursor_pos) & 0xff00;
333	scp->cursor_saveunder = cursor_image;
334	if (!(flags & BLINK_CURSOR)||((flags & BLINK_CURSOR)&&(blinkrate & 4))){
335	    if ((cursor_image & 0x7000) == 0x7000) {
336		cursor_image &= 0x8fff;
337		if(!(cursor_image & 0x0700))
338		    cursor_image |= 0x0700;
339	    } else {
340		cursor_image |= 0x7000;
341		if ((cursor_image & 0x0700) == 0x0700)
342		    cursor_image &= 0xf0ff;
343	    }
344	}
345    }
346    *ptr = cursor_image;
347}
348
349static inline void
350remove_cursor_image(scr_stat *scp)
351{
352    *(Crtat + (scp->cursor_oldpos - scp->scr_buf)) = scp->cursor_saveunder;
353}
354
355static inline void
356move_crsr(scr_stat *scp, int x, int y)
357{
358    if (x < 0)
359	x = 0;
360    if (y < 0)
361	y = 0;
362    if (x >= scp->xsize)
363	x = scp->xsize-1;
364    if (y >= scp->ysize)
365	y = scp->ysize-1;
366    scp->xpos = x;
367    scp->ypos = y;
368    scp->cursor_pos = scp->scr_buf + scp->ypos * scp->xsize + scp->xpos;
369}
370
371static int
372scprobe(struct isa_device *dev)
373{
374    if (!scvidprobe(dev->id_unit, dev->id_flags)) {
375	if (bootverbose)
376	    printf("sc%d: no video adapter is found.\n", dev->id_unit);
377	return (0);
378    }
379
380    sc_port = dev->id_iobase;
381    if (sckbdprobe(dev->id_unit, dev->id_flags))
382	return (IO_KBDSIZE);
383    else
384        return ((dev->id_flags & DETECT_KBD) ? 0 : IO_KBDSIZE);
385}
386
387/* probe video adapters, return TRUE if found */
388static int
389scvidprobe(int unit, int flags)
390{
391    /*
392     * XXX don't try to `printf' anything here, the console may not have
393     * been configured yet.
394     */
395    u_short volatile *cp;
396    u_short was;
397    u_long  pa;
398    u_long  segoff;
399
400    /* do this test only once */
401    if (init_done != COLD)
402	return (Crtat != 0);
403
404    /*
405     * Finish defaulting crtc variables for a mono screen.  Crtat is a
406     * bogus common variable so that it can be shared with pcvt, so it
407     * can't be statically initialized.  XXX.
408     */
409    Crtat = (u_short *)MONO_BUF;
410    crtc_type = KD_MONO;
411    /* If CGA memory seems to work, switch to color.  */
412    cp = (u_short *)CGA_BUF;
413    was = *cp;
414    *cp = (u_short) 0xA55A;
415    if (*cp == 0xA55A) {
416	Crtat = (u_short *)CGA_BUF;
417	crtc_addr = COLOR_BASE;
418	crtc_type = KD_CGA;
419    } else {
420        cp = Crtat;
421	was = *cp;
422	*cp = (u_short) 0xA55A;
423	if (*cp != 0xA55A) {
424	    /* no screen at all, bail out */
425	    Crtat = 0;
426	    return FALSE;
427	}
428    }
429    *cp = was;
430
431    /*
432     * Check rtc and BIOS date area.
433     * XXX: don't use BIOSDATA_EQUIPMENT, it is not a dead copy
434     * of RTC_EQUIPMENT. The bit 4 and 5 of the ETC_EQUIPMENT are
435     * zeros for EGA and VGA. However, the EGA/VGA BIOS will set
436     * these bits in BIOSDATA_EQUIPMENT according to the monitor
437     * type detected.
438     */
439    switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) {	/* bit 4 and 5 */
440    case 0: /* EGA/VGA, or nothing */
441	crtc_type = KD_EGA;
442	/* the color adapter may be in the 40x25 mode... XXX */
443	break;
444    case 1: /* CGA 40x25 */
445	/* switch to the 80x25 mode? XXX */
446	/* FALL THROUGH */
447    case 2: /* CGA 80x25 */
448	/* `crtc_type' has already been set... */
449	/* crtc_type = KD_CGA; */
450	break;
451    case 3: /* MDA */
452	/* `crtc_type' has already been set... */
453	/* crtc_type = KD_MONO; */
454	break;
455    }
456
457    /* is this a VGA or higher ? */
458    outb(crtc_addr, 7);
459    if (inb(crtc_addr) == 7) {
460
461        crtc_type = KD_VGA;
462	crtc_vga = TRUE;
463	read_vgaregs(vgaregs);
464
465	/* Get the BIOS video mode pointer */
466	segoff = *(u_long *)pa_to_va(0x4a8);
467	pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
468	if (ISMAPPED(pa, sizeof(u_long))) {
469	    segoff = *(u_long *)pa_to_va(pa);
470	    pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
471	    if (ISMAPPED(pa, MODE_PARAM_SIZE))
472		video_mode_ptr = (char *)pa_to_va(pa);
473	}
474    }
475
476    return TRUE;
477}
478
479/* probe the keyboard, return TRUE if found */
480static int
481sckbdprobe(int unit, int flags)
482{
483    int codeset;
484    int c = -1;
485    int m;
486
487    sc_kbdc = kbdc_open(sc_port);
488
489    if (!kbdc_lock(sc_kbdc, TRUE)) {
490	/* driver error? */
491	printf("sc%d: unable to lock the controller.\n", unit);
492        return ((flags & DETECT_KBD) ? FALSE : TRUE);
493    }
494
495    /* discard anything left after UserConfig */
496    empty_both_buffers(sc_kbdc, 10);
497
498    /* save the current keyboard controller command byte */
499    m = kbdc_get_device_mask(sc_kbdc) & ~KBD_KBD_CONTROL_BITS;
500    c = get_controller_command_byte(sc_kbdc);
501    if (c == -1) {
502	/* CONTROLLER ERROR */
503	printf("sc%d: unable to get the current command byte value.\n", unit);
504	goto fail;
505    }
506    if (bootverbose)
507	printf("sc%d: the current keyboard controller command byte %04x\n",
508	    unit, c);
509#if 0
510    /* override the keyboard lock switch */
511    c |= KBD_OVERRIDE_KBD_LOCK;
512#endif
513
514    /*
515     * The keyboard may have been screwed up by the boot block.
516     * We may just be able to recover from error by testing the controller
517     * and the keyboard port. The controller command byte needs to be saved
518     * before this recovery operation, as some controllers seem to set
519     * the command byte to particular values.
520     */
521    test_controller(sc_kbdc);
522    test_kbd_port(sc_kbdc);
523
524    /* enable the keyboard port, but disable the keyboard intr. */
525    if (!set_controller_command_byte(sc_kbdc,
526            KBD_KBD_CONTROL_BITS,
527            KBD_ENABLE_KBD_PORT | KBD_DISABLE_KBD_INT)) {
528	/* CONTROLLER ERROR
529	 * there is very little we can do...
530	 */
531	printf("sc%d: unable to set the command byte.\n", unit);
532	goto fail;
533     }
534
535     /*
536      * Check if we have an XT keyboard before we attempt to reset it.
537      * The procedure assumes that the keyboard and the controller have
538      * been set up properly by BIOS and have not been messed up
539      * during the boot process.
540      */
541     codeset = -1;
542     if (flags & XT_KEYBD)
543	 /* the user says there is a XT keyboard */
544	 codeset = 1;
545#ifdef DETECT_XT_KEYBOARD
546     else if ((c & KBD_TRANSLATION) == 0) {
547	 /* SET_SCANCODE_SET is not always supported; ignore error */
548	 if (send_kbd_command_and_data(sc_kbdc, KBDC_SET_SCANCODE_SET, 0)
549		 == KBD_ACK)
550	     codeset = read_kbd_data(sc_kbdc);
551     }
552     if (bootverbose)
553         printf("sc%d: keyboard scancode set %d\n", unit, codeset);
554#endif /* DETECT_XT_KEYBOARD */
555
556    if (flags & KBD_NORESET) {
557        write_kbd_command(sc_kbdc, KBDC_ECHO);
558        if (read_kbd_data(sc_kbdc) != KBD_ECHO) {
559            empty_both_buffers(sc_kbdc, 10);
560            test_controller(sc_kbdc);
561            test_kbd_port(sc_kbdc);
562            if (bootverbose)
563                printf("sc%d: failed to get response from the keyboard.\n",
564		    unit);
565	    goto fail;
566	}
567    } else {
568        /* reset keyboard hardware */
569        if (!reset_kbd(sc_kbdc)) {
570            /* KEYBOARD ERROR
571             * Keyboard reset may fail either because the keyboard doen't
572             * exist, or because the keyboard doesn't pass the self-test,
573             * or the keyboard controller on the motherboard and the keyboard
574             * somehow fail to shake hands. It is just possible, particularly
575             * in the last case, that the keyoard controller may be left
576             * in a hung state. test_controller() and test_kbd_port() appear
577             * to bring the keyboard controller back (I don't know why and
578             * how, though.)
579             */
580            empty_both_buffers(sc_kbdc, 10);
581            test_controller(sc_kbdc);
582            test_kbd_port(sc_kbdc);
583            /* We could disable the keyboard port and interrupt... but,
584             * the keyboard may still exist (see above).
585             */
586            if (bootverbose)
587                printf("sc%d: failed to reset the keyboard.\n", unit);
588            goto fail;
589        }
590    }
591
592    /*
593     * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
594     * such as those on the IBM ThinkPad laptop computers can be used
595     * with the standard console driver.
596     */
597    if (codeset == 1) {
598	if (send_kbd_command_and_data(
599	        sc_kbdc, KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
600	    /* XT kbd doesn't need scan code translation */
601	    c &= ~KBD_TRANSLATION;
602	} else {
603	    /* KEYBOARD ERROR
604	     * The XT kbd isn't usable unless the proper scan code set
605	     * is selected.
606	     */
607	    printf("sc%d: unable to set the XT keyboard mode.\n", unit);
608	    goto fail;
609	}
610    }
611    /* enable the keyboard port and intr. */
612    if (!set_controller_command_byte(sc_kbdc,
613            KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
614	    (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
615	        | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
616	/* CONTROLLER ERROR
617	 * This is serious; we are left with the disabled keyboard intr.
618	 */
619	printf("sc%d: unable to enable the keyboard port and intr.\n", unit);
620	goto fail;
621    }
622
623    kbdc_set_device_mask(sc_kbdc, m | KBD_KBD_CONTROL_BITS),
624    kbdc_lock(sc_kbdc, FALSE);
625    return TRUE;
626
627fail:
628    if (c != -1)
629        /* try to restore the command byte as before, if possible */
630        set_controller_command_byte(sc_kbdc, 0xff, c);
631    kbdc_set_device_mask(sc_kbdc,
632        (flags & DETECT_KBD) ? m : m | KBD_KBD_CONTROL_BITS);
633    kbdc_lock(sc_kbdc, FALSE);
634    return FALSE;
635}
636
637#if NAPM > 0
638static int
639scresume(void *dummy)
640{
641	shfts = ctls = alts = agrs = metas = accents = 0;
642	return 0;
643}
644#endif
645
646static int
647scattach(struct isa_device *dev)
648{
649    scr_stat *scp;
650    dev_t cdev = makedev(CDEV_MAJOR, 0);
651    char *p;
652#ifdef DEVFS
653    int vc;
654#endif
655
656    scinit();
657    flags = dev->id_flags;
658    if (!crtc_vga)
659	flags &= ~CHAR_CURSOR;
660
661    scp = console[0];
662
663    if (crtc_vga) {
664    	cut_buffer = (char *)malloc(scp->xsize*scp->ysize, M_DEVBUF, M_NOWAIT);
665    }
666
667    scp->scr_buf = (u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
668				     M_DEVBUF, M_NOWAIT);
669
670    /* copy temporary buffer to final buffer */
671    bcopy(sc_buffer, scp->scr_buf, scp->xsize * scp->ysize * sizeof(u_short));
672
673    scp->cursor_pos = scp->cursor_oldpos =
674	scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
675    scp->mouse_pos = scp->mouse_oldpos =
676	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
677	    		scp->mouse_xpos/8);
678
679    /* initialize history buffer & pointers */
680    scp->history_head = scp->history_pos =
681	(u_short *)malloc(scp->history_size*sizeof(u_short),
682			  M_DEVBUF, M_NOWAIT);
683    if (scp->history_head != NULL)
684        bzero(scp->history_head, scp->history_size*sizeof(u_short));
685    scp->history = scp->history_head;
686
687    /* initialize cursor stuff */
688    if (!(scp->status & UNKNOWN_MODE))
689    	draw_cursor_image(scp);
690
691    /* get screen update going */
692    scrn_timer(NULL);
693
694    update_leds(scp->status);
695
696    if ((crtc_type == KD_VGA) && bootverbose) {
697        printf("sc%d: BIOS video mode:%d\n",
698	    dev->id_unit, *(u_char *)pa_to_va(0x449));
699        printf("sc%d: VGA registers upon power-up\n", dev->id_unit);
700        dump_vgaregs(vgaregs);
701        printf("sc%d: video mode:%d\n", dev->id_unit, scp->mode);
702        printf("sc%d: VGA registers in BIOS for mode:%d\n",
703		dev->id_unit, scp->mode);
704        dump_vgaregs(vgaregs2);
705	p = get_mode_param(scp, scp->mode);
706        if (p != NULL) {
707            printf("sc%d: VGA registers to be used for mode:%d\n",
708		dev->id_unit, scp->mode);
709            dump_vgaregs(p);
710        }
711        printf("sc%d: rows_offset:%d\n", dev->id_unit, rows_offset);
712    }
713    if ((crtc_type == KD_VGA) && (video_mode_ptr == NULL))
714        printf("sc%d: WARNING: video mode switching is only partially supported\n",
715	        dev->id_unit);
716
717    printf("sc%d: ", dev->id_unit);
718    switch(crtc_type) {
719    case KD_VGA:
720	if (crtc_addr == MONO_BASE)
721	    printf("VGA mono");
722	else
723	    printf("VGA color");
724	break;
725    case KD_EGA:
726	if (crtc_addr == MONO_BASE)
727	    printf("EGA mono");
728	else
729	    printf("EGA color");
730	break;
731    case KD_CGA:
732	printf("CGA");
733	break;
734    case KD_MONO:
735    case KD_HERCULES:
736    default:
737	printf("MDA/hercules");
738	break;
739    }
740    printf(" <%d virtual consoles, flags=0x%x>\n", MAXCONS, flags);
741
742#if NAPM > 0
743    scp->r_hook.ah_fun = scresume;
744    scp->r_hook.ah_arg = NULL;
745    scp->r_hook.ah_name = "system keyboard";
746    scp->r_hook.ah_order = APM_MID_ORDER;
747    apm_hook_establish(APM_HOOK_RESUME , &scp->r_hook);
748#endif
749
750    cdevsw_add(&cdev, &scdevsw, NULL);
751
752#ifdef DEVFS
753    for (vc = 0; vc < MAXCONS; vc++)
754        sc_devfs_token[vc] = devfs_add_devswf(&scdevsw, vc, DV_CHR,
755				UID_ROOT, GID_WHEEL, 0600, "ttyv%n", vc);
756    sc_mouse_devfs_token = devfs_add_devswf(&scdevsw, SC_MOUSE, DV_CHR,
757				UID_ROOT, GID_WHEEL, 0600, "sysmouse");
758    sc_console_devfs_token = devfs_add_devswf(&scdevsw, SC_CONSOLE, DV_CHR,
759				UID_ROOT, GID_WHEEL, 0600, "consolectl");
760#endif
761    return 0;
762}
763
764struct tty
765*scdevtotty(dev_t dev)
766{
767    int unit = minor(dev);
768
769    if (init_done == COLD)
770	return(NULL);
771    if (unit == SC_CONSOLE)
772	return CONSOLE_TTY;
773    if (unit == SC_MOUSE)
774	return MOUSE_TTY;
775    if (unit >= MAXCONS || unit < 0)
776	return(NULL);
777    return VIRTUAL_TTY(unit);
778}
779
780int
781scopen(dev_t dev, int flag, int mode, struct proc *p)
782{
783    struct tty *tp = scdevtotty(dev);
784
785    if (!tp)
786	return(ENXIO);
787
788    tp->t_oproc = (minor(dev) == SC_MOUSE) ? scmousestart : scstart;
789    tp->t_param = scparam;
790    tp->t_dev = dev;
791    if (!(tp->t_state & TS_ISOPEN)) {
792	ttychars(tp);
793        /* Use the current setting of the <-- key as default VERASE. */
794        /* If the Delete key is preferable, an stty is necessary     */
795        tp->t_cc[VERASE] = key_map.key[0x0e].map[0];
796	tp->t_iflag = TTYDEF_IFLAG;
797	tp->t_oflag = TTYDEF_OFLAG;
798	tp->t_cflag = TTYDEF_CFLAG;
799	tp->t_lflag = TTYDEF_LFLAG;
800	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
801	scparam(tp, &tp->t_termios);
802	ttsetwater(tp);
803	(*linesw[tp->t_line].l_modem)(tp, 1);
804    	if (minor(dev) == SC_MOUSE)
805	    mouse_level = 0;		/* XXX */
806    }
807    else
808	if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
809	    return(EBUSY);
810    if (minor(dev) < MAXCONS && !console[minor(dev)]) {
811	console[minor(dev)] = alloc_scp();
812    }
813    if (minor(dev)<MAXCONS && !tp->t_winsize.ws_col && !tp->t_winsize.ws_row) {
814	tp->t_winsize.ws_col = console[minor(dev)]->xsize;
815	tp->t_winsize.ws_row = console[minor(dev)]->ysize;
816    }
817    return ((*linesw[tp->t_line].l_open)(dev, tp));
818}
819
820int
821scclose(dev_t dev, int flag, int mode, struct proc *p)
822{
823    struct tty *tp = scdevtotty(dev);
824    struct scr_stat *scp;
825
826    if (!tp)
827	return(ENXIO);
828    if (minor(dev) < MAXCONS) {
829	scp = get_scr_stat(tp->t_dev);
830	if (scp->status & SWITCH_WAIT_ACQ)
831	    wakeup((caddr_t)&scp->smode);
832#if not_yet_done
833	if (scp == &main_console) {
834	    scp->pid = 0;
835	    scp->proc = NULL;
836	    scp->smode.mode = VT_AUTO;
837	}
838	else {
839	    free(scp->scr_buf, M_DEVBUF);
840	    if (scp->history != NULL) {
841		free(scp->history, M_DEVBUF);
842		if (scp->history_size / scp->xsize
843			> imax(SC_HISTORY_SIZE, scp->ysize))
844		    extra_history_size += scp->history_size / scp->xsize
845			- imax(SC_HISTORY_SIZE, scp->ysize);
846	    }
847	    free(scp, M_DEVBUF);
848	    console[minor(dev)] = NULL;
849	}
850#else
851	scp->pid = 0;
852	scp->proc = NULL;
853	scp->smode.mode = VT_AUTO;
854#endif
855    }
856    spltty();
857    (*linesw[tp->t_line].l_close)(tp, flag);
858    ttyclose(tp);
859    spl0();
860    return(0);
861}
862
863int
864scread(dev_t dev, struct uio *uio, int flag)
865{
866    struct tty *tp = scdevtotty(dev);
867
868    if (!tp)
869	return(ENXIO);
870    return((*linesw[tp->t_line].l_read)(tp, uio, flag));
871}
872
873int
874scwrite(dev_t dev, struct uio *uio, int flag)
875{
876    struct tty *tp = scdevtotty(dev);
877
878    if (!tp)
879	return(ENXIO);
880    return((*linesw[tp->t_line].l_write)(tp, uio, flag));
881}
882
883void
884scintr(int unit)
885{
886    static struct tty *cur_tty;
887    int c, len;
888    u_char *cp;
889
890    /* make screensaver happy */
891    scrn_time_stamp = mono_time.tv_sec;
892
893    /*
894     * Loop while there is still input to get from the keyboard.
895     * I don't think this is nessesary, and it doesn't fix
896     * the Xaccel-2.1 keyboard hang, but it can't hurt.		XXX
897     */
898    while ((c = scgetc(SCGETC_NONBLOCK)) != NOKEY) {
899
900	cur_tty = VIRTUAL_TTY(get_scr_num());
901	if (!(cur_tty->t_state & TS_ISOPEN))
902	    if (!((cur_tty = CONSOLE_TTY)->t_state & TS_ISOPEN))
903		continue;
904
905	switch (c & 0xff00) {
906	case 0x0000: /* normal key */
907	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
908	    break;
909	case FKEY:  /* function key, return string */
910	    if (cp = get_fstr((u_int)c, (u_int *)&len)) {
911	    	while (len-- >  0)
912		    (*linesw[cur_tty->t_line].l_rint)(*cp++ & 0xFF, cur_tty);
913	    }
914	    break;
915	case MKEY:  /* meta is active, prepend ESC */
916	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
917	    (*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
918	    break;
919	case BKEY:  /* backtab fixed sequence (esc [ Z) */
920	    (*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
921	    (*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
922	    (*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
923	    break;
924	}
925    }
926
927    if (cur_console->status & MOUSE_ENABLED) {
928	cur_console->status &= ~MOUSE_VISIBLE;
929	remove_mouse_image(cur_console);
930    }
931}
932
933static int
934scparam(struct tty *tp, struct termios *t)
935{
936    tp->t_ispeed = t->c_ispeed;
937    tp->t_ospeed = t->c_ospeed;
938    tp->t_cflag = t->c_cflag;
939    return 0;
940}
941
942int
943scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
944{
945    int error;
946    u_int i;
947    struct tty *tp;
948    scr_stat *scp;
949    u_short *usp;
950    char *mp;
951    int s;
952
953    tp = scdevtotty(dev);
954    if (!tp)
955	return ENXIO;
956    scp = get_scr_stat(tp->t_dev);
957
958    /* If there is a user_ioctl function call that first */
959    if (sc_user_ioctl) {
960	if (error = (*sc_user_ioctl)(dev, cmd, data, flag, p))
961	    return error;
962    }
963
964    switch (cmd) {  		/* process console hardware related ioctl's */
965
966    case GIO_ATTR:      	/* get current attributes */
967	*(int*)data = (scp->term.cur_attr >> 8) & 0xFF;
968	return 0;
969
970    case GIO_COLOR:     	/* is this a color console ? */
971	if (crtc_addr == COLOR_BASE)
972	    *(int*)data = 1;
973	else
974	    *(int*)data = 0;
975	return 0;
976
977    case CONS_CURRENT:  	/* get current adapter type */
978	*(int *)data = crtc_type;
979	return 0;
980
981    case CONS_GET:      	/* get current video mode */
982	*(int*)data = scp->mode;
983	return 0;
984
985    case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
986	if (*(int *)data < 0)
987            return EINVAL;
988	scrn_blank_time = *(int *)data;
989	if (scrn_blank_time == 0)
990	    scrn_time_stamp = mono_time.tv_sec;
991	return 0;
992
993    case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
994	if ((*(int*)data) & 0x01)
995	    flags |= BLINK_CURSOR;
996	else
997	    flags &= ~BLINK_CURSOR;
998	if ((*(int*)data) & 0x02) {
999	    if (!crtc_vga)
1000		return ENXIO;
1001	    flags |= CHAR_CURSOR;
1002	} else
1003	    flags &= ~CHAR_CURSOR;
1004	/*
1005	 * The cursor shape is global property; all virtual consoles
1006	 * are affected. Update the cursor in the current console...
1007	 */
1008	if (!(cur_console->status & UNKNOWN_MODE)) {
1009            remove_cursor_image(cur_console);
1010	    if (flags & CHAR_CURSOR)
1011	        set_destructive_cursor(cur_console);
1012	    draw_cursor_image(cur_console);
1013	}
1014	return 0;
1015
1016    case CONS_BELLTYPE: 	/* set bell type sound/visual */
1017	if (*data)
1018	    flags |= VISUAL_BELL;
1019	else
1020	    flags &= ~VISUAL_BELL;
1021	return 0;
1022
1023    case CONS_HISTORY:  	/* set history size */
1024	if (*(int *)data > 0) {
1025	    int lines;	/* buffer size to allocate */
1026	    int lines0;	/* current buffer size */
1027
1028	    lines = imax(*(int *)data, scp->ysize);
1029	    lines0 = (scp->history != NULL) ?
1030		      scp->history_size / scp->xsize : scp->ysize;
1031	    /*
1032	     * syscons unconditionally allocates buffers upto SC_HISTORY_SIZE
1033	     * lines or scp->ysize lines, whichever is larger. A value
1034	     * greater than that is allowed, subject to extra_history_size.
1035	     */
1036	    if (lines > imax(lines0, SC_HISTORY_SIZE) + extra_history_size)
1037                return EINVAL;
1038            if (cur_console->status & BUFFER_SAVED)
1039                return EBUSY;
1040	    usp = scp->history;
1041	    scp->history = NULL;
1042	    if (usp != NULL)
1043		free(usp, M_DEVBUF);
1044	    scp->history_size = lines * scp->xsize;
1045	    /*
1046	     * extra_history_size +=
1047	     *    (lines0 > imax(SC_HISTORY_SIZE, scp->ysize)) ?
1048	     *     lines0 - imax(SC_HISTORY_SIZE, scp->ysize)) : 0;
1049	     * extra_history_size -=
1050	     *    (lines > imax(SC_HISTORY_SIZE, scp->ysize)) ?
1051	     *	   lines - imax(SC_HISTORY_SIZE, scp->ysize)) : 0;
1052	     * lines0 >= ysize && lines >= ysize... Hey, the above can be
1053	     * reduced to the following...
1054	     */
1055	    extra_history_size +=
1056		imax(lines0, SC_HISTORY_SIZE) - imax(lines, SC_HISTORY_SIZE);
1057	    usp = (u_short *)malloc(scp->history_size * sizeof(u_short),
1058				    M_DEVBUF, M_WAITOK);
1059	    bzero(usp, scp->history_size * sizeof(u_short));
1060	    scp->history_head = scp->history_pos = usp;
1061	    scp->history = usp;
1062	    return 0;
1063	}
1064	else
1065	    return EINVAL;
1066
1067    case CONS_MOUSECTL:		/* control mouse arrow */
1068    {
1069	/* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */
1070	static butmap[8] = {
1071            MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP
1072		| MOUSE_MSC_BUTTON3UP,
1073            MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
1074            MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
1075            MOUSE_MSC_BUTTON3UP,
1076            MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
1077            MOUSE_MSC_BUTTON2UP,
1078            MOUSE_MSC_BUTTON1UP,
1079            0,
1080	};
1081	mouse_info_t *mouse = (mouse_info_t*)data;
1082
1083	if (!crtc_vga)
1084	    return ENODEV;
1085
1086	switch (mouse->operation) {
1087	case MOUSE_MODE:
1088	    if (ISSIGVALID(mouse->u.mode.signal)) {
1089		scp->mouse_signal = mouse->u.mode.signal;
1090		scp->mouse_proc = p;
1091		scp->mouse_pid = p->p_pid;
1092	    }
1093	    else {
1094		scp->mouse_signal = 0;
1095		scp->mouse_proc = NULL;
1096		scp->mouse_pid = 0;
1097	    }
1098	    break;
1099
1100	case MOUSE_SHOW:
1101	    if (!(scp->status & MOUSE_ENABLED)) {
1102		scp->status |= (MOUSE_ENABLED | MOUSE_VISIBLE);
1103		scp->mouse_oldpos = scp->mouse_pos;
1104		mark_all(scp);
1105	    }
1106	    else
1107		return EINVAL;
1108	    break;
1109
1110	case MOUSE_HIDE:
1111	    if (scp->status & MOUSE_ENABLED) {
1112		scp->status &= ~(MOUSE_ENABLED | MOUSE_VISIBLE);
1113		mark_all(scp);
1114	    }
1115	    else
1116		return EINVAL;
1117	    break;
1118
1119	case MOUSE_MOVEABS:
1120	    scp->mouse_xpos = mouse->u.data.x;
1121	    scp->mouse_ypos = mouse->u.data.y;
1122	    set_mouse_pos(scp);
1123	    break;
1124
1125	case MOUSE_MOVEREL:
1126	    scp->mouse_xpos += mouse->u.data.x;
1127	    scp->mouse_ypos += mouse->u.data.y;
1128	    set_mouse_pos(scp);
1129	    break;
1130
1131	case MOUSE_GETINFO:
1132	    mouse->u.data.x = scp->mouse_xpos;
1133	    mouse->u.data.y = scp->mouse_ypos;
1134	    mouse->u.data.z = 0;
1135	    mouse->u.data.buttons = scp->mouse_buttons;
1136	    break;
1137
1138	case MOUSE_ACTION:
1139	case MOUSE_MOTION_EVENT:
1140	    /* this should maybe only be settable from /dev/consolectl SOS */
1141	    /* send out mouse event on /dev/sysmouse */
1142
1143	    mouse_status.dx += mouse->u.data.x;
1144	    mouse_status.dy += mouse->u.data.y;
1145	    mouse_status.dz += mouse->u.data.z;
1146	    if (mouse->operation == MOUSE_ACTION)
1147	        mouse_status.button = mouse->u.data.buttons;
1148	    mouse_status.flags |=
1149		((mouse->u.data.x || mouse->u.data.y || mouse->u.data.z) ?
1150		    MOUSE_POSCHANGED : 0)
1151		| (mouse_status.obutton ^ mouse_status.button);
1152
1153	    if (cur_console->status & MOUSE_ENABLED)
1154	    	cur_console->status |= MOUSE_VISIBLE;
1155
1156	    if ((MOUSE_TTY)->t_state & TS_ISOPEN) {
1157		u_char buf[MOUSE_SYS_PACKETSIZE];
1158		int j;
1159
1160		/* the first five bytes are compatible with MouseSystems' */
1161		buf[0] = MOUSE_MSC_SYNC
1162		    | butmap[mouse_status.button & MOUSE_STDBUTTONS];
1163		j = imax(imin(mouse->u.data.x, 255), -256);
1164		buf[1] = j >> 1;
1165		buf[3] = j - buf[1];
1166		j = -imax(imin(mouse->u.data.y, 255), -256);
1167		buf[2] = j >> 1;
1168		buf[4] = j - buf[2];
1169		for (j = 0; j < MOUSE_MSC_PACKETSIZE; j++)
1170	    		(*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[j],MOUSE_TTY);
1171		if (mouse_level >= 1) { 	/* extended part */
1172		    j = imax(imin(mouse->u.data.z, 127), -128);
1173		    buf[5] = (j >> 1) & 0x7f;
1174		    buf[6] = (j - (j >> 1)) & 0x7f;
1175		    /* buttons 4-10 */
1176		    buf[7] = (~mouse_status.button >> 3) & 0x7f;
1177		    for (j = MOUSE_MSC_PACKETSIZE;
1178			 j < MOUSE_SYS_PACKETSIZE; j++)
1179	    		(*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[j],MOUSE_TTY);
1180		}
1181	    }
1182
1183	    if (cur_console->mouse_signal) {
1184		cur_console->mouse_buttons = mouse->u.data.buttons;
1185    		/* has controlling process died? */
1186		if (cur_console->mouse_proc &&
1187		    (cur_console->mouse_proc != pfind(cur_console->mouse_pid))){
1188		    	cur_console->mouse_signal = 0;
1189			cur_console->mouse_proc = NULL;
1190			cur_console->mouse_pid = 0;
1191		}
1192		else
1193		    psignal(cur_console->mouse_proc, cur_console->mouse_signal);
1194	    }
1195	    else if (mouse->operation == MOUSE_ACTION) {
1196		/* process button presses */
1197		if ((cur_console->mouse_buttons ^ mouse->u.data.buttons) &&
1198		    !(cur_console->status & UNKNOWN_MODE)) {
1199		    cur_console->mouse_buttons = mouse->u.data.buttons;
1200		    if (cur_console->mouse_buttons & MOUSE_BUTTON1DOWN)
1201			mouse_cut_start(cur_console);
1202		    else
1203			mouse_cut_end(cur_console);
1204		    if (cur_console->mouse_buttons & MOUSE_BUTTON2DOWN ||
1205			cur_console->mouse_buttons & MOUSE_BUTTON3DOWN)
1206			mouse_paste(cur_console);
1207		}
1208	    }
1209
1210	    if (mouse->u.data.x != 0 || mouse->u.data.y != 0) {
1211		cur_console->mouse_xpos += mouse->u.data.x;
1212		cur_console->mouse_ypos += mouse->u.data.y;
1213		set_mouse_pos(cur_console);
1214	    }
1215
1216	    break;
1217
1218	case MOUSE_BUTTON_EVENT:
1219	    if ((mouse->u.event.id & MOUSE_BUTTONS) == 0)
1220		return EINVAL;
1221	    if (mouse->u.event.value < 0)
1222		return EINVAL;
1223
1224	    if (mouse->u.event.value > 0) {
1225	        cur_console->mouse_buttons |= mouse->u.event.id;
1226	        mouse_status.button |= mouse->u.event.id;
1227	    } else {
1228	        cur_console->mouse_buttons &= ~mouse->u.event.id;
1229	        mouse_status.button &= ~mouse->u.event.id;
1230	    }
1231	    mouse_status.flags |=
1232		((mouse->u.data.x || mouse->u.data.y || mouse->u.data.z) ?
1233		    MOUSE_POSCHANGED : 0)
1234		| (mouse_status.obutton ^ mouse_status.button);
1235
1236	    if (cur_console->status & MOUSE_ENABLED)
1237	    	cur_console->status |= MOUSE_VISIBLE;
1238
1239	    if ((MOUSE_TTY)->t_state & TS_ISOPEN) {
1240		u_char buf[8];
1241		int i;
1242
1243		buf[0] = MOUSE_MSC_SYNC
1244			 | butmap[mouse_status.button & MOUSE_STDBUTTONS];
1245		buf[7] = (~mouse_status.button >> 3) & 0x7f;
1246		buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
1247		for (i = 0;
1248		     i < ((mouse_level >= 1) ? MOUSE_SYS_PACKETSIZE
1249					     : MOUSE_MSC_PACKETSIZE); i++)
1250	    	    (*linesw[(MOUSE_TTY)->t_line].l_rint)(buf[i],MOUSE_TTY);
1251	    }
1252
1253	    if (cur_console->mouse_signal) {
1254		if (cur_console->mouse_proc &&
1255		    (cur_console->mouse_proc != pfind(cur_console->mouse_pid))){
1256		    	cur_console->mouse_signal = 0;
1257			cur_console->mouse_proc = NULL;
1258			cur_console->mouse_pid = 0;
1259		}
1260		else
1261		    psignal(cur_console->mouse_proc, cur_console->mouse_signal);
1262		break;
1263	    }
1264
1265	    if (cur_console->status & UNKNOWN_MODE)
1266		break;
1267
1268	    switch (mouse->u.event.id) {
1269	    case MOUSE_BUTTON1DOWN:
1270	        switch (mouse->u.event.value % 4) {
1271		case 0:	/* up */
1272		    mouse_cut_end(cur_console);
1273		    break;
1274		case 1:
1275		    mouse_cut_start(cur_console);
1276		    break;
1277		case 2:
1278		    mouse_cut_word(cur_console);
1279		    break;
1280		case 3:
1281		    mouse_cut_line(cur_console);
1282		    break;
1283		}
1284		break;
1285	    case MOUSE_BUTTON2DOWN:
1286	        switch (mouse->u.event.value) {
1287		case 0:	/* up */
1288		    break;
1289		default:
1290		    mouse_paste(cur_console);
1291		    break;
1292		}
1293		break;
1294	    case MOUSE_BUTTON3DOWN:
1295	        switch (mouse->u.event.value) {
1296		case 0:	/* up */
1297		    if (!(cur_console->mouse_buttons & MOUSE_BUTTON1DOWN))
1298		        mouse_cut_end(cur_console);
1299		    break;
1300		default:
1301		    mouse_cut_extend(cur_console);
1302		    break;
1303		}
1304		break;
1305	    }
1306	    break;
1307
1308	default:
1309	    return EINVAL;
1310	}
1311	/* make screensaver happy */
1312	scrn_time_stamp = mono_time.tv_sec;
1313	return 0;
1314    }
1315
1316    /* MOUSE_XXX: /dev/sysmouse ioctls */
1317    case MOUSE_GETHWINFO:	/* get device information */
1318    {
1319	mousehw_t *hw = (mousehw_t *)data;
1320
1321	if (tp != MOUSE_TTY)
1322	    return ENOTTY;
1323	hw->buttons = 10;		/* XXX unknown */
1324	hw->iftype = MOUSE_IF_SYSMOUSE;
1325	hw->type = MOUSE_MOUSE;
1326	hw->model = MOUSE_MODEL_GENERIC;
1327	hw->hwid = 0;
1328	return 0;
1329    }
1330
1331    case MOUSE_GETMODE:		/* get protocol/mode */
1332    {
1333	mousemode_t *mode = (mousemode_t *)data;
1334
1335	if (tp != MOUSE_TTY)
1336	    return ENOTTY;
1337	mode->level = mouse_level;
1338	switch (mode->level) {
1339	case 0:
1340	    /* at this level, sysmouse emulates MouseSystems protocol */
1341	    mode->protocol = MOUSE_PROTO_MSC;
1342	    mode->rate = -1;		/* unknown */
1343	    mode->resolution = -1;	/* unknown */
1344	    mode->accelfactor = 0;	/* disabled */
1345	    mode->packetsize = MOUSE_MSC_PACKETSIZE;
1346	    mode->syncmask[0] = MOUSE_MSC_SYNCMASK;
1347	    mode->syncmask[1] = MOUSE_MSC_SYNC;
1348	    break;
1349
1350	case 1:
1351	    /* at this level, sysmouse uses its own protocol */
1352	    mode->protocol = MOUSE_PROTO_SYSMOUSE;
1353	    mode->rate = -1;
1354	    mode->resolution = -1;
1355	    mode->accelfactor = 0;
1356	    mode->packetsize = MOUSE_SYS_PACKETSIZE;
1357	    mode->syncmask[0] = MOUSE_SYS_SYNCMASK;
1358	    mode->syncmask[1] = MOUSE_SYS_SYNC;
1359	    break;
1360	}
1361	return 0;
1362    }
1363
1364    case MOUSE_SETMODE:		/* set protocol/mode */
1365    {
1366	mousemode_t *mode = (mousemode_t *)data;
1367
1368	if (tp != MOUSE_TTY)
1369	    return ENOTTY;
1370	if ((mode->level < 0) || (mode->level > 1))
1371	    return EINVAL;
1372	mouse_level = mode->level;
1373	return 0;
1374    }
1375
1376    case MOUSE_GETLEVEL:	/* get operation level */
1377	if (tp != MOUSE_TTY)
1378	    return ENOTTY;
1379	*(int *)data = mouse_level;
1380	return 0;
1381
1382    case MOUSE_SETLEVEL:	/* set operation level */
1383	if (tp != MOUSE_TTY)
1384	    return ENOTTY;
1385	if ((*(int *)data  < 0) || (*(int *)data > 1))
1386	    return EINVAL;
1387	mouse_level = *(int *)data;
1388	return 0;
1389
1390    case MOUSE_GETSTATUS:	/* get accumulated mouse events */
1391	if (tp != MOUSE_TTY)
1392	    return ENOTTY;
1393	s = spltty();
1394	*(mousestatus_t *)data = mouse_status;
1395	mouse_status.flags = 0;
1396	mouse_status.obutton = mouse_status.button;
1397	mouse_status.dx = 0;
1398	mouse_status.dy = 0;
1399	mouse_status.dz = 0;
1400	splx(s);
1401	return 0;
1402
1403#if notyet
1404    case MOUSE_GETVARS:		/* get internal mouse variables */
1405    case MOUSE_SETVARS:		/* set internal mouse variables */
1406	if (tp != MOUSE_TTY)
1407	    return ENOTTY;
1408	return ENODEV;
1409#endif
1410
1411    case MOUSE_READSTATE:	/* read status from the device */
1412    case MOUSE_READDATA:	/* read data from the device */
1413	if (tp != MOUSE_TTY)
1414	    return ENOTTY;
1415	return ENODEV;
1416
1417    case CONS_GETINFO:  	/* get current (virtual) console info */
1418    {
1419	vid_info_t *ptr = (vid_info_t*)data;
1420	if (ptr->size == sizeof(struct vid_info)) {
1421	    ptr->m_num = get_scr_num();
1422	    ptr->mv_col = scp->xpos;
1423	    ptr->mv_row = scp->ypos;
1424	    ptr->mv_csz = scp->xsize;
1425	    ptr->mv_rsz = scp->ysize;
1426	    ptr->mv_norm.fore = (scp->term.std_color & 0x0f00)>>8;
1427	    ptr->mv_norm.back = (scp->term.std_color & 0xf000)>>12;
1428	    ptr->mv_rev.fore = (scp->term.rev_color & 0x0f00)>>8;
1429	    ptr->mv_rev.back = (scp->term.rev_color & 0xf000)>>12;
1430	    ptr->mv_grfc.fore = 0;      /* not supported */
1431	    ptr->mv_grfc.back = 0;      /* not supported */
1432	    ptr->mv_ovscan = scp->border;
1433	    ptr->mk_keylock = scp->status & LOCK_KEY_MASK;
1434	    return 0;
1435	}
1436	return EINVAL;
1437    }
1438
1439    case CONS_GETVERS:  	/* get version number */
1440	*(int*)data = 0x200;    /* version 2.0 */
1441	return 0;
1442
1443    /* VGA TEXT MODES */
1444    case SW_VGA_C40x25:
1445    case SW_VGA_C80x25: case SW_VGA_M80x25:
1446    case SW_VGA_C80x30: case SW_VGA_M80x30:
1447    case SW_VGA_C80x50: case SW_VGA_M80x50:
1448    case SW_VGA_C80x60: case SW_VGA_M80x60:
1449    case SW_B40x25:     case SW_C40x25:
1450    case SW_B80x25:     case SW_C80x25:
1451    case SW_ENH_B40x25: case SW_ENH_C40x25:
1452    case SW_ENH_B80x25: case SW_ENH_C80x25:
1453    case SW_ENH_B80x43: case SW_ENH_C80x43:
1454    case SW_EGAMONO80x25:
1455
1456	if (!crtc_vga)
1457 	    return ENODEV;
1458 	mp = get_mode_param(scp, cmd & 0xff);
1459 	if (mp == NULL)
1460 	    return ENODEV;
1461
1462	if (scp->history != NULL)
1463	    i = imax(scp->history_size / scp->xsize
1464		     - imax(SC_HISTORY_SIZE, scp->ysize), 0);
1465	else
1466	    i = 0;
1467	switch (cmd & 0xff) {
1468	case M_VGA_C80x60: case M_VGA_M80x60:
1469	    if (!(fonts_loaded & FONT_8))
1470		return EINVAL;
1471	    scp->xsize = 80;
1472	    scp->ysize = 60;
1473	    break;
1474	case M_VGA_C80x50: case M_VGA_M80x50:
1475	    if (!(fonts_loaded & FONT_8))
1476		return EINVAL;
1477	    scp->xsize = 80;
1478	    scp->ysize = 50;
1479	    break;
1480	case M_ENH_B80x43: case M_ENH_C80x43:
1481	    if (!(fonts_loaded & FONT_8))
1482		return EINVAL;
1483	    scp->xsize = 80;
1484	    scp->ysize = 43;
1485	    break;
1486	case M_VGA_C80x30: case M_VGA_M80x30:
1487	    scp->xsize = 80;
1488	    scp->ysize = 30;
1489	    break;
1490	case M_ENH_C40x25: case M_ENH_B40x25:
1491	case M_ENH_C80x25: case M_ENH_B80x25:
1492	case M_EGAMONO80x25:
1493	    if (!(fonts_loaded & FONT_14))
1494		return EINVAL;
1495	    /* FALL THROUGH */
1496	default:
1497	    if ((cmd & 0xff) > M_VGA_CG320)
1498		return EINVAL;
1499            scp->xsize = mp[0];
1500            scp->ysize = mp[1] + rows_offset;
1501	    break;
1502	}
1503	scp->mode = cmd & 0xff;
1504	free(scp->scr_buf, M_DEVBUF);
1505	scp->scr_buf = (u_short *)
1506	    malloc(scp->xsize*scp->ysize*sizeof(u_short), M_DEVBUF, M_WAITOK);
1507    	scp->cursor_pos = scp->cursor_oldpos =
1508	    scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
1509    	scp->mouse_pos = scp->mouse_oldpos =
1510	    scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
1511	    scp->mouse_xpos/8);
1512	free(cut_buffer, M_DEVBUF);
1513    	cut_buffer = (char *)malloc(scp->xsize*scp->ysize, M_DEVBUF, M_NOWAIT);
1514	cut_buffer[0] = 0x00;
1515	usp = scp->history;
1516	scp->history = NULL;
1517	if (usp != NULL) {
1518	    free(usp, M_DEVBUF);
1519	    extra_history_size += i;
1520	}
1521	scp->history_size = imax(SC_HISTORY_SIZE, scp->ysize) * scp->xsize;
1522	usp = (u_short *)malloc(scp->history_size * sizeof(u_short),
1523				M_DEVBUF, M_NOWAIT);
1524	if (usp != NULL)
1525	    bzero(usp, scp->history_size * sizeof(u_short));
1526	scp->history_head = scp->history_pos = usp;
1527	scp->history = usp;
1528	if (scp == cur_console)
1529	    set_mode(scp);
1530	scp->status &= ~UNKNOWN_MODE;
1531	clear_screen(scp);
1532
1533	if (tp->t_winsize.ws_col != scp->xsize
1534	    || tp->t_winsize.ws_row != scp->ysize) {
1535	    tp->t_winsize.ws_col = scp->xsize;
1536	    tp->t_winsize.ws_row = scp->ysize;
1537	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1538	}
1539	return 0;
1540
1541    /* GRAPHICS MODES */
1542    case SW_BG320:     case SW_BG640:
1543    case SW_CG320:     case SW_CG320_D:   case SW_CG640_E:
1544    case SW_CG640x350: case SW_ENH_CG640:
1545    case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
1546
1547	if (!crtc_vga)
1548	    return ENODEV;
1549	mp = get_mode_param(scp, cmd & 0xff);
1550	if (mp == NULL)
1551	    return ENODEV;
1552
1553	scp->mode = cmd & 0xFF;
1554	scp->xpixel = mp[0] * 8;
1555	scp->ypixel = (mp[1] + rows_offset) * mp[2];
1556	if (scp == cur_console)
1557	    set_mode(scp);
1558	scp->status |= UNKNOWN_MODE;    /* graphics mode */
1559	/* clear_graphics();*/
1560
1561	if (tp->t_winsize.ws_xpixel != scp->xpixel
1562	    || tp->t_winsize.ws_ypixel != scp->ypixel) {
1563	    tp->t_winsize.ws_xpixel = scp->xpixel;
1564	    tp->t_winsize.ws_ypixel = scp->ypixel;
1565	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1566	}
1567	return 0;
1568
1569    case SW_VGA_MODEX:
1570	if (!crtc_vga)
1571	    return ENODEV;
1572	mp = get_mode_param(scp, cmd & 0xff);
1573	if (mp == NULL)
1574	    return ENODEV;
1575
1576	scp->mode = cmd & 0xFF;
1577	if (scp == cur_console)
1578	    set_mode(scp);
1579	scp->status |= UNKNOWN_MODE;    /* graphics mode */
1580	/* clear_graphics();*/
1581	scp->xpixel = 320;
1582	scp->ypixel = 240;
1583	if (tp->t_winsize.ws_xpixel != scp->xpixel
1584	    || tp->t_winsize.ws_ypixel != scp->ypixel) {
1585	    tp->t_winsize.ws_xpixel = scp->xpixel;
1586	    tp->t_winsize.ws_ypixel = scp->ypixel;
1587	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
1588	}
1589	return 0;
1590
1591    case VT_SETMODE:    	/* set screen switcher mode */
1592    {
1593	struct vt_mode *mode;
1594
1595	mode = (struct vt_mode *)data;
1596	if (ISSIGVALID(mode->relsig) && ISSIGVALID(mode->acqsig) &&
1597	    ISSIGVALID(mode->frsig)) {
1598	    bcopy(data, &scp->smode, sizeof(struct vt_mode));
1599	    if (scp->smode.mode == VT_PROCESS) {
1600		scp->proc = p;
1601		scp->pid = scp->proc->p_pid;
1602	    }
1603	    return 0;
1604	} else
1605	    return EINVAL;
1606    }
1607
1608    case VT_GETMODE:    	/* get screen switcher mode */
1609	bcopy(&scp->smode, data, sizeof(struct vt_mode));
1610	return 0;
1611
1612    case VT_RELDISP:    	/* screen switcher ioctl */
1613	switch(*data) {
1614	case VT_FALSE:  	/* user refuses to release screen, abort */
1615	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1616		old_scp->status &= ~SWITCH_WAIT_REL;
1617		switch_in_progress = FALSE;
1618		return 0;
1619	    }
1620	    return EINVAL;
1621
1622	case VT_TRUE:   	/* user has released screen, go on */
1623	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
1624		scp->status &= ~SWITCH_WAIT_REL;
1625		exchange_scr();
1626		if (new_scp->smode.mode == VT_PROCESS) {
1627		    new_scp->status |= SWITCH_WAIT_ACQ;
1628		    psignal(new_scp->proc, new_scp->smode.acqsig);
1629		}
1630		else
1631		    switch_in_progress = FALSE;
1632		return 0;
1633	    }
1634	    return EINVAL;
1635
1636	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
1637	    if (scp == new_scp && (scp->status & SWITCH_WAIT_ACQ)) {
1638		scp->status &= ~SWITCH_WAIT_ACQ;
1639		switch_in_progress = FALSE;
1640		return 0;
1641	    }
1642	    return EINVAL;
1643
1644	default:
1645	    return EINVAL;
1646	}
1647	/* NOT REACHED */
1648
1649    case VT_OPENQRY:    	/* return free virtual console */
1650	for (i = 0; i < MAXCONS; i++) {
1651	    tp = VIRTUAL_TTY(i);
1652	    if (!(tp->t_state & TS_ISOPEN)) {
1653		*data = i + 1;
1654		return 0;
1655	    }
1656	}
1657	return EINVAL;
1658
1659    case VT_ACTIVATE:   	/* switch to screen *data */
1660	return switch_scr(scp, (*data) - 1);
1661
1662    case VT_WAITACTIVE: 	/* wait for switch to occur */
1663	if (*data > MAXCONS || *data < 0)
1664	    return EINVAL;
1665	if (minor(dev) == (*data) - 1)
1666	    return 0;
1667	if (*data == 0) {
1668	    if (scp == cur_console)
1669		return 0;
1670	}
1671	else
1672	    scp = console[(*data) - 1];
1673	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
1674			     "waitvt", 0)) == ERESTART) ;
1675	return error;
1676
1677    case VT_GETACTIVE:
1678	*data = get_scr_num()+1;
1679	return 0;
1680
1681    case KDENABIO:      	/* allow io operations */
1682	error = suser(p->p_ucred, &p->p_acflag);
1683	if (error != 0)
1684	    return error;
1685	if (securelevel > 0)
1686	    return EPERM;
1687	p->p_md.md_regs->tf_eflags |= PSL_IOPL;
1688	return 0;
1689
1690    case KDDISABIO:     	/* disallow io operations (default) */
1691	p->p_md.md_regs->tf_eflags &= ~PSL_IOPL;
1692	return 0;
1693
1694    case KDSETMODE:     	/* set current mode of this (virtual) console */
1695	switch (*data) {
1696	case KD_TEXT:   	/* switch to TEXT (known) mode */
1697	    /* restore fonts & palette ! */
1698	    if (crtc_vga) {
1699		if (fonts_loaded & FONT_8)
1700		    copy_font(LOAD, FONT_8, font_8);
1701		if (fonts_loaded & FONT_14)
1702		    copy_font(LOAD, FONT_14, font_14);
1703		if (fonts_loaded & FONT_16)
1704		    copy_font(LOAD, FONT_16, font_16);
1705		load_palette(palette);
1706	    }
1707
1708	    /* move hardware cursor out of the way */
1709	    outb(crtc_addr, 14);
1710	    outb(crtc_addr + 1, 0xff);
1711	    outb(crtc_addr, 15);
1712	    outb(crtc_addr + 1, 0xff);
1713
1714	    /* FALL THROUGH */
1715
1716	case KD_TEXT1:  	/* switch to TEXT (known) mode */
1717	    /* no restore fonts & palette */
1718	    if (crtc_vga)
1719		set_mode(scp);
1720	    scp->status &= ~UNKNOWN_MODE;
1721	    clear_screen(scp);
1722	    return 0;
1723
1724	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
1725	    scp->status |= UNKNOWN_MODE;
1726	    return 0;
1727	default:
1728	    return EINVAL;
1729	}
1730	/* NOT REACHED */
1731
1732    case KDGETMODE:     	/* get current mode of this (virtual) console */
1733	*data = (scp->status & UNKNOWN_MODE) ? KD_GRAPHICS : KD_TEXT;
1734	return 0;
1735
1736    case KDSBORDER:     	/* set border color of this (virtual) console */
1737	scp->border = *data;
1738	if (scp == cur_console)
1739	    set_border(scp->border);
1740	return 0;
1741
1742    case KDSKBSTATE:    	/* set keyboard state (locks) */
1743	if (*data >= 0 && *data <= LOCK_KEY_MASK) {
1744	    scp->status &= ~LOCK_KEY_MASK;
1745	    scp->status |= *data;
1746	    if (scp == cur_console)
1747		update_leds(scp->status);
1748	    return 0;
1749	}
1750	return EINVAL;
1751
1752    case KDGKBSTATE:    	/* get keyboard state (locks) */
1753	*data = scp->status & LOCK_KEY_MASK;
1754	return 0;
1755
1756    case KDSETRAD:      	/* set keyboard repeat & delay rates */
1757	if (*data & 0x80)
1758	    return EINVAL;
1759	if (sc_kbdc != NULL)
1760	    set_keyboard(KBDC_SET_TYPEMATIC, *data);
1761	return 0;
1762
1763    case KDSKBMODE:     	/* set keyboard mode */
1764	switch (*data) {
1765	case K_RAW: 		/* switch to RAW scancode mode */
1766	    scp->status &= ~KBD_CODE_MODE;
1767	    scp->status |= KBD_RAW_MODE;
1768	    return 0;
1769
1770	case K_CODE: 		/* switch to CODE mode */
1771	    scp->status &= ~KBD_RAW_MODE;
1772	    scp->status |= KBD_CODE_MODE;
1773	    return 0;
1774
1775	case K_XLATE:   	/* switch to XLT ascii mode */
1776	    if (scp == cur_console && scp->status & KBD_RAW_MODE)
1777		shfts = ctls = alts = agrs = metas = accents = 0;
1778	    scp->status &= ~(KBD_RAW_MODE | KBD_CODE_MODE);
1779	    return 0;
1780	default:
1781	    return EINVAL;
1782	}
1783	/* NOT REACHED */
1784
1785    case KDGKBMODE:     	/* get keyboard mode */
1786	*data = (scp->status & KBD_RAW_MODE) ? K_RAW :
1787		((scp->status & KBD_CODE_MODE) ? K_CODE : K_XLATE);
1788	return 0;
1789
1790    case KDMKTONE:      	/* sound the bell */
1791	if (*(int*)data)
1792	    do_bell(scp, (*(int*)data)&0xffff,
1793		    (((*(int*)data)>>16)&0xffff)*hz/1000);
1794	else
1795	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
1796	return 0;
1797
1798    case KIOCSOUND:     	/* make tone (*data) hz */
1799	if (scp == cur_console) {
1800	    if (*(int*)data) {
1801		int pitch = timer_freq / *(int*)data;
1802
1803		/* set command for counter 2, 2 byte write */
1804		if (acquire_timer2(TIMER_16BIT|TIMER_SQWAVE))
1805		    return EBUSY;
1806
1807		/* set pitch */
1808		outb(TIMER_CNTR2, pitch);
1809		outb(TIMER_CNTR2, (pitch>>8));
1810
1811		/* enable counter 2 output to speaker */
1812		outb(IO_PPI, inb(IO_PPI) | 3);
1813	    }
1814	    else {
1815		/* disable counter 2 output to speaker */
1816		outb(IO_PPI, inb(IO_PPI) & 0xFC);
1817		release_timer2();
1818	    }
1819	}
1820	return 0;
1821
1822    case KDGKBTYPE:     	/* get keyboard type */
1823	*data = 0;  		/* type not known (yet) */
1824	return 0;
1825
1826    case KDSETLED:      	/* set keyboard LED status */
1827	if (*data >= 0 && *data <= LED_MASK) {
1828	    scp->status &= ~LED_MASK;
1829	    scp->status |= *data;
1830	    if (scp == cur_console)
1831		update_leds(scp->status);
1832	    return 0;
1833	}
1834	return EINVAL;
1835
1836    case KDGETLED:      	/* get keyboard LED status */
1837	*data = scp->status & LED_MASK;
1838	return 0;
1839
1840    case GETFKEY:       	/* get functionkey string */
1841	if (*(u_short*)data < n_fkey_tab) {
1842	    fkeyarg_t *ptr = (fkeyarg_t*)data;
1843	    bcopy(&fkey_tab[ptr->keynum].str, ptr->keydef,
1844		  fkey_tab[ptr->keynum].len);
1845	    ptr->flen = fkey_tab[ptr->keynum].len;
1846	    return 0;
1847	}
1848	else
1849	    return EINVAL;
1850
1851    case SETFKEY:       	/* set functionkey string */
1852	if (*(u_short*)data < n_fkey_tab) {
1853	    fkeyarg_t *ptr = (fkeyarg_t*)data;
1854	    bcopy(ptr->keydef, &fkey_tab[ptr->keynum].str,
1855		  min(ptr->flen, MAXFK));
1856	    fkey_tab[ptr->keynum].len = min(ptr->flen, MAXFK);
1857	    return 0;
1858	}
1859	else
1860	    return EINVAL;
1861
1862    case GIO_SCRNMAP:   	/* get output translation table */
1863	bcopy(&scr_map, data, sizeof(scr_map));
1864	return 0;
1865
1866    case PIO_SCRNMAP:   	/* set output translation table */
1867	bcopy(data, &scr_map, sizeof(scr_map));
1868	for (i=0; i<sizeof(scr_map); i++)
1869	    scr_rmap[scr_map[i]] = i;
1870	return 0;
1871
1872    case GIO_KEYMAP:    	/* get keyboard translation table */
1873	bcopy(&key_map, data, sizeof(key_map));
1874	return 0;
1875
1876    case PIO_KEYMAP:    	/* set keyboard translation table */
1877	accents = 0;
1878	bzero(&accent_map, sizeof(accent_map));
1879	bcopy(data, &key_map, sizeof(key_map));
1880	return 0;
1881
1882    case GIO_DEADKEYMAP:    	/* get accent key translation table */
1883	bcopy(&accent_map, data, sizeof(accent_map));
1884	return 0;
1885
1886    case PIO_DEADKEYMAP:    	/* set accent key translation table */
1887	accents = 0;
1888	bcopy(data, &accent_map, sizeof(accent_map));
1889	return 0;
1890
1891    case PIO_FONT8x8:   	/* set 8x8 dot font */
1892	if (!crtc_vga)
1893	    return ENXIO;
1894	bcopy(data, font_8, 8*256);
1895	fonts_loaded |= FONT_8;
1896	if (!(cur_console->status & UNKNOWN_MODE)) {
1897	    copy_font(LOAD, FONT_8, font_8);
1898	    if (flags & CHAR_CURSOR)
1899	        set_destructive_cursor(cur_console);
1900	}
1901	return 0;
1902
1903    case GIO_FONT8x8:   	/* get 8x8 dot font */
1904	if (!crtc_vga)
1905	    return ENXIO;
1906	if (fonts_loaded & FONT_8) {
1907	    bcopy(font_8, data, 8*256);
1908	    return 0;
1909	}
1910	else
1911	    return ENXIO;
1912
1913    case PIO_FONT8x14:  	/* set 8x14 dot font */
1914	if (!crtc_vga)
1915	    return ENXIO;
1916	bcopy(data, font_14, 14*256);
1917	fonts_loaded |= FONT_14;
1918	if (!(cur_console->status & UNKNOWN_MODE)) {
1919	    copy_font(LOAD, FONT_14, font_14);
1920	    if (flags & CHAR_CURSOR)
1921	        set_destructive_cursor(cur_console);
1922	}
1923	return 0;
1924
1925    case GIO_FONT8x14:  	/* get 8x14 dot font */
1926	if (!crtc_vga)
1927	    return ENXIO;
1928	if (fonts_loaded & FONT_14) {
1929	    bcopy(font_14, data, 14*256);
1930	    return 0;
1931	}
1932	else
1933	    return ENXIO;
1934
1935    case PIO_FONT8x16:  	/* set 8x16 dot font */
1936	if (!crtc_vga)
1937	    return ENXIO;
1938	bcopy(data, font_16, 16*256);
1939	fonts_loaded |= FONT_16;
1940	if (!(cur_console->status & UNKNOWN_MODE)) {
1941	    copy_font(LOAD, FONT_16, font_16);
1942	    if (flags & CHAR_CURSOR)
1943	        set_destructive_cursor(cur_console);
1944	}
1945	return 0;
1946
1947    case GIO_FONT8x16:  	/* get 8x16 dot font */
1948	if (!crtc_vga)
1949	    return ENXIO;
1950	if (fonts_loaded & FONT_16) {
1951	    bcopy(font_16, data, 16*256);
1952	    return 0;
1953	}
1954	else
1955	    return ENXIO;
1956    default:
1957	break;
1958    }
1959
1960    error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
1961    if (error != ENOIOCTL)
1962	return(error);
1963    error = ttioctl(tp, cmd, data, flag);
1964    if (error != ENOIOCTL)
1965	return(error);
1966    return(ENOTTY);
1967}
1968
1969static void
1970scstart(struct tty *tp)
1971{
1972    struct clist *rbp;
1973    int s, len;
1974    u_char buf[PCBURST];
1975    scr_stat *scp = get_scr_stat(tp->t_dev);
1976
1977    if (scp->status & SLKED || blink_in_progress)
1978	return; /* XXX who repeats the call when the above flags are cleared? */
1979    s = spltty();
1980    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1981	tp->t_state |= TS_BUSY;
1982	rbp = &tp->t_outq;
1983	while (rbp->c_cc) {
1984	    len = q_to_b(rbp, buf, PCBURST);
1985	    splx(s);
1986	    ansi_put(scp, buf, len);
1987	    s = spltty();
1988	}
1989	tp->t_state &= ~TS_BUSY;
1990	ttwwakeup(tp);
1991    }
1992    splx(s);
1993}
1994
1995static void
1996scmousestart(struct tty *tp)
1997{
1998    struct clist *rbp;
1999    int s;
2000    u_char buf[PCBURST];
2001
2002    s = spltty();
2003    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
2004	tp->t_state |= TS_BUSY;
2005	rbp = &tp->t_outq;
2006	while (rbp->c_cc) {
2007	    q_to_b(rbp, buf, PCBURST);
2008	}
2009	tp->t_state &= ~TS_BUSY;
2010	ttwwakeup(tp);
2011    }
2012    splx(s);
2013}
2014
2015void
2016sccnprobe(struct consdev *cp)
2017{
2018    struct isa_device *dvp;
2019
2020    /*
2021     * Take control if we are the highest priority enabled display device.
2022     */
2023    dvp = find_display();
2024    if (dvp == NULL || dvp->id_driver != &scdriver) {
2025	cp->cn_pri = CN_DEAD;
2026	return;
2027    }
2028
2029    if (!scvidprobe(dvp->id_unit, dvp->id_flags)) {
2030	cp->cn_pri = CN_DEAD;
2031	return;
2032    }
2033
2034    /* initialize required fields */
2035    cp->cn_dev = makedev(CDEV_MAJOR, SC_CONSOLE);
2036    cp->cn_pri = CN_INTERNAL;
2037
2038    sc_kbdc = kbdc_open(sc_port);
2039}
2040
2041void
2042sccninit(struct consdev *cp)
2043{
2044    scinit();
2045}
2046
2047void
2048sccnputc(dev_t dev, int c)
2049{
2050    u_char buf[1];
2051    int s;
2052    scr_stat *scp = console[0];
2053    term_stat save = scp->term;
2054
2055    scp->term = kernel_console;
2056    current_default = &kernel_default;
2057    if (scp == cur_console && !(scp->status & UNKNOWN_MODE))
2058	remove_cursor_image(scp);
2059    buf[0] = c;
2060    ansi_put(scp, buf, 1);
2061    kernel_console = scp->term;
2062    current_default = &user_default;
2063    scp->term = save;
2064    s = splclock();
2065    if (scp == cur_console && !(scp->status & UNKNOWN_MODE)) {
2066	if (/* timer not running && */ (scp->start <= scp->end)) {
2067	    sc_bcopy(scp->scr_buf + scp->start, Crtat + scp->start,
2068		   (1 + scp->end - scp->start) * sizeof(u_short));
2069	    scp->start = scp->xsize * scp->ysize;
2070	    scp->end = 0;
2071	}
2072    	scp->cursor_oldpos = scp->cursor_pos;
2073	draw_cursor_image(scp);
2074    }
2075    splx(s);
2076}
2077
2078int
2079sccngetc(dev_t dev)
2080{
2081    int s = spltty();	/* block scintr and scrn_timer while we poll */
2082    int c;
2083
2084    /*
2085     * Stop the screen saver if necessary.
2086     * What if we have been running in the screen saver code... XXX
2087     */
2088    if (scrn_blanked > 0)
2089        stop_scrn_saver(current_saver);
2090
2091    c = scgetc(SCGETC_CN);
2092
2093    /* make sure the screen saver won't be activated soon */
2094    scrn_time_stamp = mono_time.tv_sec;
2095    splx(s);
2096    return(c);
2097}
2098
2099int
2100sccncheckc(dev_t dev)
2101{
2102    int c, s;
2103
2104    s = spltty();
2105    if (scrn_blanked > 0)
2106        stop_scrn_saver(current_saver);
2107    c = scgetc(SCGETC_CN | SCGETC_NONBLOCK);
2108    if (c != NOKEY)
2109        scrn_time_stamp = mono_time.tv_sec;
2110    splx(s);
2111    return(c == NOKEY ? -1 : c);	/* c == -1 can't happen */
2112}
2113
2114static scr_stat
2115*get_scr_stat(dev_t dev)
2116{
2117    int unit = minor(dev);
2118
2119    if (unit == SC_CONSOLE)
2120	return console[0];
2121    if (unit >= MAXCONS || unit < 0)
2122	return(NULL);
2123    return console[unit];
2124}
2125
2126static int
2127get_scr_num()
2128{
2129    int i = 0;
2130
2131    while ((i < MAXCONS) && (cur_console != console[i]))
2132	i++;
2133    return i < MAXCONS ? i : 0;
2134}
2135
2136static void
2137scrn_timer(void *arg)
2138{
2139    scr_stat *scp = cur_console;
2140    int s = spltty();
2141
2142    /*
2143     * With release 2.1 of the Xaccel server, the keyboard is left
2144     * hanging pretty often. Apparently an interrupt from the
2145     * keyboard is lost, and I don't know why (yet).
2146     * This ugly hack calls scintr if input is ready for the keyboard
2147     * and conveniently hides the problem.			XXX
2148     */
2149    /* Try removing anything stuck in the keyboard controller; whether
2150     * it's a keyboard scan code or mouse data. `scintr()' doesn't
2151     * read the mouse data directly, but `kbdio' routines will, as a
2152     * side effect.
2153     */
2154    if (kbdc_lock(sc_kbdc, TRUE)) {
2155	/*
2156	 * We have seen the lock flag is not set. Let's reset the flag early;
2157	 * otherwise `update_led()' failes which may want the lock
2158	 * during `scintr()'.
2159	 */
2160	kbdc_lock(sc_kbdc, FALSE);
2161	if (kbdc_data_ready(sc_kbdc))
2162	    scintr(0);
2163    }
2164
2165    /* should we just return ? */
2166    if ((scp->status&UNKNOWN_MODE) || blink_in_progress || switch_in_progress) {
2167	timeout(scrn_timer, NULL, hz / 10);
2168	splx(s);
2169	return;
2170    }
2171
2172    /* should we stop the screen saver? */
2173    if (mono_time.tv_sec <= scrn_time_stamp + scrn_blank_time)
2174	if (scrn_blanked > 0)
2175            stop_scrn_saver(current_saver);
2176
2177    if (scrn_blanked <= 0) {
2178	/* update screen image */
2179	if (scp->start <= scp->end) {
2180	    sc_bcopy(scp->scr_buf + scp->start, Crtat + scp->start,
2181		   (1 + scp->end - scp->start) * sizeof(u_short));
2182	}
2183
2184	/* update "pseudo" mouse pointer image */
2185	if ((scp->status & MOUSE_VISIBLE) && crtc_vga) {
2186	    /* did mouse move since last time ? */
2187	    if (scp->status & MOUSE_MOVED) {
2188		/* do we need to remove old mouse pointer image ? */
2189		if (scp->mouse_cut_start != NULL ||
2190		    (scp->mouse_pos-scp->scr_buf) <= scp->start ||
2191		    (scp->mouse_pos+scp->xsize+1-scp->scr_buf) >= scp->end) {
2192		    remove_mouse_image(scp);
2193		}
2194		scp->status &= ~MOUSE_MOVED;
2195		draw_mouse_image(scp);
2196	    }
2197	    else {
2198		/* mouse didn't move, has it been overwritten ? */
2199		if ((scp->mouse_pos+scp->xsize+1-scp->scr_buf) >= scp->start &&
2200		    (scp->mouse_pos - scp->scr_buf) <= scp->end) {
2201		    draw_mouse_image(scp);
2202		}
2203	    }
2204	}
2205
2206	/* update cursor image */
2207	if (scp->status & CURSOR_ENABLED) {
2208	    /* did cursor move since last time ? */
2209	    if (scp->cursor_pos != scp->cursor_oldpos) {
2210		/* do we need to remove old cursor image ? */
2211		if ((scp->cursor_oldpos - scp->scr_buf) < scp->start ||
2212		    ((scp->cursor_oldpos - scp->scr_buf) > scp->end)) {
2213		    remove_cursor_image(scp);
2214		}
2215    		scp->cursor_oldpos = scp->cursor_pos;
2216		draw_cursor_image(scp);
2217	    }
2218	    else {
2219		/* cursor didn't move, has it been overwritten ? */
2220		if (scp->cursor_pos - scp->scr_buf >= scp->start &&
2221		    scp->cursor_pos - scp->scr_buf <= scp->end) {
2222		    	draw_cursor_image(scp);
2223		} else {
2224		    /* if its a blinking cursor, we may have to update it */
2225		    if (flags & BLINK_CURSOR)
2226			draw_cursor_image(scp);
2227		}
2228	    }
2229	    blinkrate++;
2230	}
2231
2232	if (scp->mouse_cut_start != NULL)
2233	    draw_cutmarking(scp);
2234
2235	scp->end = 0;
2236	scp->start = scp->xsize*scp->ysize;
2237    }
2238
2239    /* should we activate the screen saver? */
2240    if ((scrn_blank_time != 0)
2241	    && (mono_time.tv_sec > scrn_time_stamp + scrn_blank_time))
2242	(*current_saver)(TRUE);
2243
2244    timeout(scrn_timer, NULL, hz / 25);
2245    splx(s);
2246}
2247
2248int
2249add_scrn_saver(void (*this_saver)(int))
2250{
2251    if (current_saver != none_saver)
2252	return EBUSY;
2253    current_saver = this_saver;
2254    return 0;
2255}
2256
2257int
2258remove_scrn_saver(void (*this_saver)(int))
2259{
2260    if (current_saver != this_saver)
2261	return EINVAL;
2262
2263    /*
2264     * In order to prevent `current_saver' from being called by
2265     * the timeout routine `scrn_timer()' while we manipulate
2266     * the saver list, we shall set `current_saver' to `none_saver'
2267     * before stopping the current saver, rather than blocking by `splXX()'.
2268     */
2269    current_saver = none_saver;
2270    if (scrn_blanked > 0)
2271        stop_scrn_saver(this_saver);
2272
2273    return 0;
2274}
2275
2276static void
2277stop_scrn_saver(void (*saver)(int))
2278{
2279    (*saver)(FALSE);
2280    scrn_time_stamp = mono_time.tv_sec;
2281    mark_all(cur_console);
2282}
2283
2284static void
2285clear_screen(scr_stat *scp)
2286{
2287    move_crsr(scp, 0, 0);
2288    scp->cursor_oldpos = scp->cursor_pos;
2289    fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
2290	  scp->xsize * scp->ysize);
2291    mark_all(scp);
2292    remove_cutmarking(scp);
2293}
2294
2295static int
2296switch_scr(scr_stat *scp, u_int next_scr)
2297{
2298    if (switch_in_progress && (cur_console->proc != pfind(cur_console->pid)))
2299	switch_in_progress = FALSE;
2300
2301    if (next_scr >= MAXCONS || switch_in_progress ||
2302	(cur_console->smode.mode == VT_AUTO
2303	 && cur_console->status & UNKNOWN_MODE)) {
2304	do_bell(scp, BELL_PITCH, BELL_DURATION);
2305	return EINVAL;
2306    }
2307
2308    /* is the wanted virtual console open ? */
2309    if (next_scr) {
2310	struct tty *tp = VIRTUAL_TTY(next_scr);
2311	if (!(tp->t_state & TS_ISOPEN)) {
2312	    do_bell(scp, BELL_PITCH, BELL_DURATION);
2313	    return EINVAL;
2314	}
2315    }
2316    /* delay switch if actively updating screen */
2317    if (write_in_progress || blink_in_progress) {
2318	delayed_next_scr = next_scr+1;
2319	return 0;
2320    }
2321    switch_in_progress = TRUE;
2322    old_scp = cur_console;
2323    new_scp = console[next_scr];
2324    wakeup((caddr_t)&new_scp->smode);
2325    if (new_scp == old_scp) {
2326	switch_in_progress = FALSE;
2327	delayed_next_scr = FALSE;
2328	return 0;
2329    }
2330
2331    /* has controlling process died? */
2332    if (old_scp->proc && (old_scp->proc != pfind(old_scp->pid)))
2333	old_scp->smode.mode = VT_AUTO;
2334    if (new_scp->proc && (new_scp->proc != pfind(new_scp->pid)))
2335	new_scp->smode.mode = VT_AUTO;
2336
2337    /* check the modes and switch appropriately */
2338    if (old_scp->smode.mode == VT_PROCESS) {
2339	old_scp->status |= SWITCH_WAIT_REL;
2340	psignal(old_scp->proc, old_scp->smode.relsig);
2341    }
2342    else {
2343	exchange_scr();
2344	if (new_scp->smode.mode == VT_PROCESS) {
2345	    new_scp->status |= SWITCH_WAIT_ACQ;
2346	    psignal(new_scp->proc, new_scp->smode.acqsig);
2347	}
2348	else
2349	    switch_in_progress = FALSE;
2350    }
2351    return 0;
2352}
2353
2354static void
2355exchange_scr(void)
2356{
2357    move_crsr(old_scp, old_scp->xpos, old_scp->ypos);
2358    cur_console = new_scp;
2359    if (old_scp->mode != new_scp->mode || (old_scp->status & UNKNOWN_MODE)){
2360	if (crtc_vga)
2361	    set_mode(new_scp);
2362    }
2363    move_crsr(new_scp, new_scp->xpos, new_scp->ypos);
2364    if (!(new_scp->status & UNKNOWN_MODE) && (flags & CHAR_CURSOR))
2365	set_destructive_cursor(new_scp);
2366    if ((old_scp->status & UNKNOWN_MODE) && crtc_vga)
2367	load_palette(palette);
2368    if (old_scp->status & KBD_RAW_MODE || new_scp->status & KBD_RAW_MODE ||
2369        old_scp->status & KBD_CODE_MODE || new_scp->status & KBD_CODE_MODE)
2370	shfts = ctls = alts = agrs = metas = accents = 0;
2371    set_border(new_scp->border);
2372    update_leds(new_scp->status);
2373    delayed_next_scr = FALSE;
2374    mark_all(new_scp);
2375}
2376
2377static void
2378scan_esc(scr_stat *scp, u_char c)
2379{
2380    static u_char ansi_col[16] =
2381	{0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15};
2382    int i, n;
2383    u_short *src, *dst, count;
2384
2385    if (scp->term.esc == 1) {	/* seen ESC */
2386	switch (c) {
2387
2388	case '7':   /* Save cursor position */
2389	    scp->saved_xpos = scp->xpos;
2390	    scp->saved_ypos = scp->ypos;
2391	    break;
2392
2393	case '8':   /* Restore saved cursor position */
2394	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
2395		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
2396	    break;
2397
2398	case '[':   /* Start ESC [ sequence */
2399	    scp->term.esc = 2;
2400	    scp->term.last_param = -1;
2401	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
2402		scp->term.param[i] = 1;
2403	    scp->term.num_param = 0;
2404	    return;
2405
2406	case 'M':   /* Move cursor up 1 line, scroll if at top */
2407	    if (scp->ypos > 0)
2408		move_crsr(scp, scp->xpos, scp->ypos - 1);
2409	    else {
2410		bcopy(scp->scr_buf, scp->scr_buf + scp->xsize,
2411		       (scp->ysize - 1) * scp->xsize * sizeof(u_short));
2412		fillw(scp->term.cur_color | scr_map[0x20],
2413		      scp->scr_buf, scp->xsize);
2414    		mark_all(scp);
2415	    }
2416	    break;
2417#if notyet
2418	case 'Q':
2419	    scp->term.esc = 4;
2420	    return;
2421#endif
2422	case 'c':   /* Clear screen & home */
2423	    clear_screen(scp);
2424	    break;
2425
2426	case '(':   /* iso-2022: designate 94 character set to G0 */
2427	    scp->term.esc = 5;
2428	    return;
2429	}
2430    }
2431    else if (scp->term.esc == 2) {	/* seen ESC [ */
2432	if (c >= '0' && c <= '9') {
2433	    if (scp->term.num_param < MAX_ESC_PAR) {
2434	    if (scp->term.last_param != scp->term.num_param) {
2435		scp->term.last_param = scp->term.num_param;
2436		scp->term.param[scp->term.num_param] = 0;
2437	    }
2438	    else
2439		scp->term.param[scp->term.num_param] *= 10;
2440	    scp->term.param[scp->term.num_param] += c - '0';
2441	    return;
2442	    }
2443	}
2444	scp->term.num_param = scp->term.last_param + 1;
2445	switch (c) {
2446
2447	case ';':
2448	    if (scp->term.num_param < MAX_ESC_PAR)
2449		return;
2450	    break;
2451
2452	case '=':
2453	    scp->term.esc = 3;
2454	    scp->term.last_param = -1;
2455	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
2456		scp->term.param[i] = 1;
2457	    scp->term.num_param = 0;
2458	    return;
2459
2460	case 'A':   /* up n rows */
2461	    n = scp->term.param[0]; if (n < 1) n = 1;
2462	    move_crsr(scp, scp->xpos, scp->ypos - n);
2463	    break;
2464
2465	case 'B':   /* down n rows */
2466	    n = scp->term.param[0]; if (n < 1) n = 1;
2467	    move_crsr(scp, scp->xpos, scp->ypos + n);
2468	    break;
2469
2470	case 'C':   /* right n columns */
2471	    n = scp->term.param[0]; if (n < 1) n = 1;
2472	    move_crsr(scp, scp->xpos + n, scp->ypos);
2473	    break;
2474
2475	case 'D':   /* left n columns */
2476	    n = scp->term.param[0]; if (n < 1) n = 1;
2477	    move_crsr(scp, scp->xpos - n, scp->ypos);
2478	    break;
2479
2480	case 'E':   /* cursor to start of line n lines down */
2481	    n = scp->term.param[0]; if (n < 1) n = 1;
2482	    move_crsr(scp, 0, scp->ypos + n);
2483	    break;
2484
2485	case 'F':   /* cursor to start of line n lines up */
2486	    n = scp->term.param[0]; if (n < 1) n = 1;
2487	    move_crsr(scp, 0, scp->ypos - n);
2488	    break;
2489
2490	case 'f':   /* Cursor move */
2491	case 'H':
2492	    if (scp->term.num_param == 0)
2493		move_crsr(scp, 0, 0);
2494	    else if (scp->term.num_param == 2)
2495		move_crsr(scp, scp->term.param[1] - 1, scp->term.param[0] - 1);
2496	    break;
2497
2498	case 'J':   /* Clear all or part of display */
2499	    if (scp->term.num_param == 0)
2500		n = 0;
2501	    else
2502		n = scp->term.param[0];
2503	    switch (n) {
2504	    case 0: /* clear form cursor to end of display */
2505		fillw(scp->term.cur_color | scr_map[0x20],
2506		      scp->cursor_pos,
2507		      scp->scr_buf + scp->xsize * scp->ysize - scp->cursor_pos);
2508    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2509    		mark_for_update(scp, scp->xsize * scp->ysize);
2510		remove_cutmarking(scp);
2511		break;
2512	    case 1: /* clear from beginning of display to cursor */
2513		fillw(scp->term.cur_color | scr_map[0x20],
2514		      scp->scr_buf,
2515		      scp->cursor_pos - scp->scr_buf);
2516    		mark_for_update(scp, 0);
2517    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2518		remove_cutmarking(scp);
2519		break;
2520	    case 2: /* clear entire display */
2521		fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
2522		      scp->xsize * scp->ysize);
2523		mark_all(scp);
2524		remove_cutmarking(scp);
2525		break;
2526	    }
2527	    break;
2528
2529	case 'K':   /* Clear all or part of line */
2530	    if (scp->term.num_param == 0)
2531		n = 0;
2532	    else
2533		n = scp->term.param[0];
2534	    switch (n) {
2535	    case 0: /* clear form cursor to end of line */
2536		fillw(scp->term.cur_color | scr_map[0x20],
2537		      scp->cursor_pos,
2538		      scp->xsize - scp->xpos);
2539    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2540    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf +
2541				scp->xsize - scp->xpos);
2542		break;
2543	    case 1: /* clear from beginning of line to cursor */
2544		fillw(scp->term.cur_color | scr_map[0x20],
2545		      scp->cursor_pos - scp->xpos,
2546		      scp->xpos + 1);
2547    		mark_for_update(scp, scp->ypos * scp->xsize);
2548    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2549		break;
2550	    case 2: /* clear entire line */
2551		fillw(scp->term.cur_color | scr_map[0x20],
2552		      scp->cursor_pos - scp->xpos,
2553		      scp->xsize);
2554    		mark_for_update(scp, scp->ypos * scp->xsize);
2555    		mark_for_update(scp, (scp->ypos + 1) * scp->xsize);
2556		break;
2557	    }
2558	    break;
2559
2560	case 'L':   /* Insert n lines */
2561	    n = scp->term.param[0]; if (n < 1) n = 1;
2562	    if (n > scp->ysize - scp->ypos)
2563		n = scp->ysize - scp->ypos;
2564	    src = scp->scr_buf + scp->ypos * scp->xsize;
2565	    dst = src + n * scp->xsize;
2566	    count = scp->ysize - (scp->ypos + n);
2567	    bcopy(src, dst, count * scp->xsize * sizeof(u_short));
2568	    fillw(scp->term.cur_color | scr_map[0x20], src,
2569		  n * scp->xsize);
2570	    mark_for_update(scp, scp->ypos * scp->xsize);
2571	    mark_for_update(scp, scp->xsize * scp->ysize);
2572	    break;
2573
2574	case 'M':   /* Delete n lines */
2575	    n = scp->term.param[0]; if (n < 1) n = 1;
2576	    if (n > scp->ysize - scp->ypos)
2577		n = scp->ysize - scp->ypos;
2578	    dst = scp->scr_buf + scp->ypos * scp->xsize;
2579	    src = dst + n * scp->xsize;
2580	    count = scp->ysize - (scp->ypos + n);
2581	    bcopy(src, dst, count * scp->xsize * sizeof(u_short));
2582	    src = dst + count * scp->xsize;
2583	    fillw(scp->term.cur_color | scr_map[0x20], src,
2584		  n * scp->xsize);
2585	    mark_for_update(scp, scp->ypos * scp->xsize);
2586	    mark_for_update(scp, scp->xsize * scp->ysize);
2587	    break;
2588
2589	case 'P':   /* Delete n chars */
2590	    n = scp->term.param[0]; if (n < 1) n = 1;
2591	    if (n > scp->xsize - scp->xpos)
2592		n = scp->xsize - scp->xpos;
2593	    dst = scp->cursor_pos;
2594	    src = dst + n;
2595	    count = scp->xsize - (scp->xpos + n);
2596	    bcopy(src, dst, count * sizeof(u_short));
2597	    src = dst + count;
2598	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
2599	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2600	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
2601	    break;
2602
2603	case '@':   /* Insert n chars */
2604	    n = scp->term.param[0]; if (n < 1) n = 1;
2605	    if (n > scp->xsize - scp->xpos)
2606		n = scp->xsize - scp->xpos;
2607	    src = scp->cursor_pos;
2608	    dst = src + n;
2609	    count = scp->xsize - (scp->xpos + n);
2610	    bcopy(src, dst, count * sizeof(u_short));
2611	    fillw(scp->term.cur_color | scr_map[0x20], src, n);
2612	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2613	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
2614	    break;
2615
2616	case 'S':   /* scroll up n lines */
2617	    n = scp->term.param[0]; if (n < 1)  n = 1;
2618	    if (n > scp->ysize)
2619		n = scp->ysize;
2620	    bcopy(scp->scr_buf + (scp->xsize * n),
2621		   scp->scr_buf,
2622		   scp->xsize * (scp->ysize - n) * sizeof(u_short));
2623	    fillw(scp->term.cur_color | scr_map[0x20],
2624		  scp->scr_buf + scp->xsize * (scp->ysize - n),
2625		  scp->xsize * n);
2626    	    mark_all(scp);
2627	    break;
2628
2629	case 'T':   /* scroll down n lines */
2630	    n = scp->term.param[0]; if (n < 1)  n = 1;
2631	    if (n > scp->ysize)
2632		n = scp->ysize;
2633	    bcopy(scp->scr_buf,
2634		  scp->scr_buf + (scp->xsize * n),
2635		  scp->xsize * (scp->ysize - n) *
2636		  sizeof(u_short));
2637	    fillw(scp->term.cur_color | scr_map[0x20],
2638		  scp->scr_buf, scp->xsize * n);
2639    	    mark_all(scp);
2640	    break;
2641
2642	case 'X':   /* erase n characters in line */
2643	    n = scp->term.param[0]; if (n < 1)  n = 1;
2644	    if (n > scp->xsize - scp->xpos)
2645		n = scp->xsize - scp->xpos;
2646	    fillw(scp->term.cur_color | scr_map[0x20],
2647		  scp->cursor_pos, n);
2648	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2649	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n);
2650	    break;
2651
2652	case 'Z':   /* move n tabs backwards */
2653	    n = scp->term.param[0]; if (n < 1)  n = 1;
2654	    if ((i = scp->xpos & 0xf8) == scp->xpos)
2655		i -= 8*n;
2656	    else
2657		i -= 8*(n-1);
2658	    if (i < 0)
2659		i = 0;
2660	    move_crsr(scp, i, scp->ypos);
2661	    break;
2662
2663	case '`':   /* move cursor to column n */
2664	    n = scp->term.param[0]; if (n < 1)  n = 1;
2665	    move_crsr(scp, n - 1, scp->ypos);
2666	    break;
2667
2668	case 'a':   /* move cursor n columns to the right */
2669	    n = scp->term.param[0]; if (n < 1)  n = 1;
2670	    move_crsr(scp, scp->xpos + n, scp->ypos);
2671	    break;
2672
2673	case 'd':   /* move cursor to row n */
2674	    n = scp->term.param[0]; if (n < 1)  n = 1;
2675	    move_crsr(scp, scp->xpos, n - 1);
2676	    break;
2677
2678	case 'e':   /* move cursor n rows down */
2679	    n = scp->term.param[0]; if (n < 1)  n = 1;
2680	    move_crsr(scp, scp->xpos, scp->ypos + n);
2681	    break;
2682
2683	case 'm':   /* change attribute */
2684	    if (scp->term.num_param == 0) {
2685		scp->term.attr_mask = NORMAL_ATTR;
2686		scp->term.cur_attr =
2687		    scp->term.cur_color = scp->term.std_color;
2688		break;
2689	    }
2690	    for (i = 0; i < scp->term.num_param; i++) {
2691		switch (n = scp->term.param[i]) {
2692		case 0: /* back to normal */
2693		    scp->term.attr_mask = NORMAL_ATTR;
2694		    scp->term.cur_attr =
2695			scp->term.cur_color = scp->term.std_color;
2696		    break;
2697		case 1: /* bold */
2698		    scp->term.attr_mask |= BOLD_ATTR;
2699		    scp->term.cur_attr = mask2attr(&scp->term);
2700		    break;
2701		case 4: /* underline */
2702		    scp->term.attr_mask |= UNDERLINE_ATTR;
2703		    scp->term.cur_attr = mask2attr(&scp->term);
2704		    break;
2705		case 5: /* blink */
2706		    scp->term.attr_mask |= BLINK_ATTR;
2707		    scp->term.cur_attr = mask2attr(&scp->term);
2708		    break;
2709		case 7: /* reverse video */
2710		    scp->term.attr_mask |= REVERSE_ATTR;
2711		    scp->term.cur_attr = mask2attr(&scp->term);
2712		    break;
2713		case 30: case 31: /* set fg color */
2714		case 32: case 33: case 34:
2715		case 35: case 36: case 37:
2716		    scp->term.attr_mask |= FOREGROUND_CHANGED;
2717		    scp->term.cur_color =
2718			(scp->term.cur_color&0xF000) | (ansi_col[(n-30)&7]<<8);
2719		    scp->term.cur_attr = mask2attr(&scp->term);
2720		    break;
2721		case 40: case 41: /* set bg color */
2722		case 42: case 43: case 44:
2723		case 45: case 46: case 47:
2724		    scp->term.attr_mask |= BACKGROUND_CHANGED;
2725		    scp->term.cur_color =
2726			(scp->term.cur_color&0x0F00) | (ansi_col[(n-40)&7]<<12);
2727		    scp->term.cur_attr = mask2attr(&scp->term);
2728		    break;
2729		}
2730	    }
2731	    break;
2732
2733	case 's':   /* Save cursor position */
2734	    scp->saved_xpos = scp->xpos;
2735	    scp->saved_ypos = scp->ypos;
2736	    break;
2737
2738	case 'u':   /* Restore saved cursor position */
2739	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
2740		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
2741	    break;
2742
2743	case 'x':
2744	    if (scp->term.num_param == 0)
2745		n = 0;
2746	    else
2747		n = scp->term.param[0];
2748	    switch (n) {
2749	    case 0:     /* reset attributes */
2750		scp->term.attr_mask = NORMAL_ATTR;
2751		scp->term.cur_attr =
2752		    scp->term.cur_color = scp->term.std_color =
2753		    current_default->std_color;
2754		scp->term.rev_color = current_default->rev_color;
2755		break;
2756	    case 1:     /* set ansi background */
2757		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
2758		scp->term.cur_color = scp->term.std_color =
2759		    (scp->term.std_color & 0x0F00) |
2760		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
2761		scp->term.cur_attr = mask2attr(&scp->term);
2762		break;
2763	    case 2:     /* set ansi foreground */
2764		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
2765		scp->term.cur_color = scp->term.std_color =
2766		    (scp->term.std_color & 0xF000) |
2767		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
2768		scp->term.cur_attr = mask2attr(&scp->term);
2769		break;
2770	    case 3:     /* set ansi attribute directly */
2771		scp->term.attr_mask &= ~(FOREGROUND_CHANGED|BACKGROUND_CHANGED);
2772		scp->term.cur_color = scp->term.std_color =
2773		    (scp->term.param[1]&0xFF)<<8;
2774		scp->term.cur_attr = mask2attr(&scp->term);
2775		break;
2776	    case 5:     /* set ansi reverse video background */
2777		scp->term.rev_color =
2778		    (scp->term.rev_color & 0x0F00) |
2779		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
2780		scp->term.cur_attr = mask2attr(&scp->term);
2781		break;
2782	    case 6:     /* set ansi reverse video foreground */
2783		scp->term.rev_color =
2784		    (scp->term.rev_color & 0xF000) |
2785		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
2786		scp->term.cur_attr = mask2attr(&scp->term);
2787		break;
2788	    case 7:     /* set ansi reverse video directly */
2789		scp->term.rev_color =
2790		    (scp->term.param[1]&0xFF)<<8;
2791		scp->term.cur_attr = mask2attr(&scp->term);
2792		break;
2793	    }
2794	    break;
2795
2796	case 'z':   /* switch to (virtual) console n */
2797	    if (scp->term.num_param == 1)
2798		switch_scr(scp, scp->term.param[0]);
2799	    break;
2800	}
2801    }
2802    else if (scp->term.esc == 3) {	/* seen ESC [0-9]+ = */
2803	if (c >= '0' && c <= '9') {
2804	    if (scp->term.num_param < MAX_ESC_PAR) {
2805	    if (scp->term.last_param != scp->term.num_param) {
2806		scp->term.last_param = scp->term.num_param;
2807		scp->term.param[scp->term.num_param] = 0;
2808	    }
2809	    else
2810		scp->term.param[scp->term.num_param] *= 10;
2811	    scp->term.param[scp->term.num_param] += c - '0';
2812	    return;
2813	    }
2814	}
2815	scp->term.num_param = scp->term.last_param + 1;
2816	switch (c) {
2817
2818	case ';':
2819	    if (scp->term.num_param < MAX_ESC_PAR)
2820		return;
2821	    break;
2822
2823	case 'A':   /* set display border color */
2824	    if (scp->term.num_param == 1) {
2825		scp->border=scp->term.param[0] & 0xff;
2826		if (scp == cur_console)
2827		    set_border(scp->border);
2828            }
2829	    break;
2830
2831	case 'B':   /* set bell pitch and duration */
2832	    if (scp->term.num_param == 2) {
2833		scp->bell_pitch = scp->term.param[0];
2834		scp->bell_duration = scp->term.param[1]*10;
2835	    }
2836	    break;
2837
2838	case 'C':   /* set cursor type & shape */
2839	    if (scp->term.num_param == 1) {
2840		if (scp->term.param[0] & 0x01)
2841		    flags |= BLINK_CURSOR;
2842		else
2843		    flags &= ~BLINK_CURSOR;
2844		if ((scp->term.param[0] & 0x02) && crtc_vga)
2845		    flags |= CHAR_CURSOR;
2846		else
2847		    flags &= ~CHAR_CURSOR;
2848	    }
2849	    else if (scp->term.num_param == 2) {
2850		scp->cursor_start = scp->term.param[0] & 0x1F;
2851		scp->cursor_end = scp->term.param[1] & 0x1F;
2852	    }
2853	    /*
2854	     * The cursor shape is global property; all virtual consoles
2855	     * are affected. Update the cursor in the current console...
2856	     */
2857	    if (!(cur_console->status & UNKNOWN_MODE)) {
2858		remove_cursor_image(cur_console);
2859		if (crtc_vga && (flags & CHAR_CURSOR))
2860	            set_destructive_cursor(cur_console);
2861		draw_cursor_image(cur_console);
2862	    }
2863	    break;
2864
2865	case 'F':   /* set ansi foreground */
2866	    if (scp->term.num_param == 1) {
2867		scp->term.attr_mask &= ~FOREGROUND_CHANGED;
2868		scp->term.cur_color = scp->term.std_color =
2869		    (scp->term.std_color & 0xF000)
2870		    | ((scp->term.param[0] & 0x0F) << 8);
2871		scp->term.cur_attr = mask2attr(&scp->term);
2872	    }
2873	    break;
2874
2875	case 'G':   /* set ansi background */
2876	    if (scp->term.num_param == 1) {
2877		scp->term.attr_mask &= ~BACKGROUND_CHANGED;
2878		scp->term.cur_color = scp->term.std_color =
2879		    (scp->term.std_color & 0x0F00)
2880		    | ((scp->term.param[0] & 0x0F) << 12);
2881		scp->term.cur_attr = mask2attr(&scp->term);
2882	    }
2883	    break;
2884
2885	case 'H':   /* set ansi reverse video foreground */
2886	    if (scp->term.num_param == 1) {
2887		scp->term.rev_color =
2888		    (scp->term.rev_color & 0xF000)
2889		    | ((scp->term.param[0] & 0x0F) << 8);
2890		scp->term.cur_attr = mask2attr(&scp->term);
2891	    }
2892	    break;
2893
2894	case 'I':   /* set ansi reverse video background */
2895	    if (scp->term.num_param == 1) {
2896		scp->term.rev_color =
2897		    (scp->term.rev_color & 0x0F00)
2898		    | ((scp->term.param[0] & 0x0F) << 12);
2899		scp->term.cur_attr = mask2attr(&scp->term);
2900	    }
2901	    break;
2902	}
2903    }
2904#if notyet
2905    else if (scp->term.esc == 4) {	/* seen ESC Q */
2906	/* to be filled */
2907    }
2908#endif
2909    else if (scp->term.esc == 5) {	/* seen ESC ( */
2910	switch (c) {
2911	case 'B':   /* iso-2022: desginate ASCII into G0 */
2912	    break;
2913	/* other items to be filled */
2914	default:
2915	    break;
2916	}
2917    }
2918    scp->term.esc = 0;
2919}
2920
2921static void
2922ansi_put(scr_stat *scp, u_char *buf, int len)
2923{
2924    u_char *ptr = buf;
2925
2926    /* make screensaver happy */
2927    if (scp == cur_console)
2928	scrn_time_stamp = mono_time.tv_sec;
2929
2930    write_in_progress++;
2931outloop:
2932    if (scp->term.esc) {
2933	scan_esc(scp, *ptr++);
2934	len--;
2935    }
2936    else if (PRINTABLE(*ptr)) {     /* Print only printables */
2937 	int cnt = len <= (scp->xsize-scp->xpos) ? len : (scp->xsize-scp->xpos);
2938 	u_short cur_attr = scp->term.cur_attr;
2939 	u_short *cursor_pos = scp->cursor_pos;
2940	do {
2941	    /*
2942	     * gcc-2.6.3 generates poor (un)sign extension code.  Casting the
2943	     * pointers in the following to volatile should have no effect,
2944	     * but in fact speeds up this inner loop from 26 to 18 cycles
2945	     * (+ cache misses) on i486's.
2946	     */
2947#define	UCVP(ucp)	((u_char volatile *)(ucp))
2948	    *cursor_pos++ = UCVP(scr_map)[*UCVP(ptr)] | cur_attr;
2949	    ptr++;
2950	    cnt--;
2951	} while (cnt && PRINTABLE(*ptr));
2952	len -= (cursor_pos - scp->cursor_pos);
2953	scp->xpos += (cursor_pos - scp->cursor_pos);
2954	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2955	mark_for_update(scp, cursor_pos - scp->scr_buf);
2956	scp->cursor_pos = cursor_pos;
2957	if (scp->xpos >= scp->xsize) {
2958	    scp->xpos = 0;
2959	    scp->ypos++;
2960	}
2961    }
2962    else  {
2963	switch(*ptr) {
2964	case 0x07:
2965	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
2966	    break;
2967
2968	case 0x08:      /* non-destructive backspace */
2969	    if (scp->cursor_pos > scp->scr_buf) {
2970	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2971		scp->cursor_pos--;
2972	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2973		if (scp->xpos > 0)
2974		    scp->xpos--;
2975		else {
2976		    scp->xpos += scp->xsize - 1;
2977		    scp->ypos--;
2978		}
2979	    }
2980	    break;
2981
2982	case 0x09:  /* non-destructive tab */
2983	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2984	    scp->cursor_pos += (8 - scp->xpos % 8u);
2985	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2986	    if ((scp->xpos += (8 - scp->xpos % 8u)) >= scp->xsize) {
2987	        scp->xpos = 0;
2988	        scp->ypos++;
2989	    }
2990	    break;
2991
2992	case 0x0a:  /* newline, same pos */
2993	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2994	    scp->cursor_pos += scp->xsize;
2995	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
2996	    scp->ypos++;
2997	    break;
2998
2999	case 0x0c:  /* form feed, clears screen */
3000	    clear_screen(scp);
3001	    break;
3002
3003	case 0x0d:  /* return, return to pos 0 */
3004	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3005	    scp->cursor_pos -= scp->xpos;
3006	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
3007	    scp->xpos = 0;
3008	    break;
3009
3010	case 0x1b:  /* start escape sequence */
3011	    scp->term.esc = 1;
3012	    scp->term.num_param = 0;
3013	    break;
3014	}
3015	ptr++; len--;
3016    }
3017    /* do we have to scroll ?? */
3018    if (scp->cursor_pos >= scp->scr_buf + scp->ysize * scp->xsize) {
3019	remove_cutmarking(scp);
3020	if (scp->history) {
3021	    bcopy(scp->scr_buf, scp->history_head,
3022		   scp->xsize * sizeof(u_short));
3023	    scp->history_head += scp->xsize;
3024	    if (scp->history_head + scp->xsize >
3025		scp->history + scp->history_size)
3026		scp->history_head = scp->history;
3027	}
3028	bcopy(scp->scr_buf + scp->xsize, scp->scr_buf,
3029	       scp->xsize * (scp->ysize - 1) * sizeof(u_short));
3030	fillw(scp->term.cur_color | scr_map[0x20],
3031	      scp->scr_buf + scp->xsize * (scp->ysize - 1),
3032	      scp->xsize);
3033	scp->cursor_pos -= scp->xsize;
3034	scp->ypos--;
3035    	mark_all(scp);
3036    }
3037    if (len)
3038	goto outloop;
3039    write_in_progress--;
3040    if (delayed_next_scr)
3041	switch_scr(scp, delayed_next_scr - 1);
3042}
3043
3044static void
3045scinit(void)
3046{
3047    u_int hw_cursor;
3048    u_int i;
3049
3050    if (init_done != COLD)
3051	return;
3052    init_done = WARM;
3053
3054    /*
3055     * Ensure a zero start address.  This is mainly to recover after
3056     * switching from pcvt using userconfig().  The registers are w/o
3057     * for old hardware so it's too hard to relocate the active screen
3058     * memory.
3059     */
3060    outb(crtc_addr, 12);
3061    outb(crtc_addr + 1, 0);
3062    outb(crtc_addr, 13);
3063    outb(crtc_addr + 1, 0);
3064
3065    /* extract cursor location */
3066    outb(crtc_addr, 14);
3067    hw_cursor = inb(crtc_addr + 1) << 8;
3068    outb(crtc_addr, 15);
3069    hw_cursor |= inb(crtc_addr + 1);
3070
3071    /*
3072     * Validate cursor location.  It may be off the screen.  Then we must
3073     * not use it for the initial buffer offset.
3074     */
3075    if (hw_cursor >= ROW * COL)
3076	hw_cursor = (ROW - 1) * COL;
3077
3078    /* move hardware cursor out of the way */
3079    outb(crtc_addr, 14);
3080    outb(crtc_addr + 1, 0xff);
3081    outb(crtc_addr, 15);
3082    outb(crtc_addr + 1, 0xff);
3083
3084    /* set up the first console */
3085    current_default = &user_default;
3086    console[0] = &main_console;
3087    init_scp(console[0]);
3088    cur_console = console[0];
3089
3090    /* discard the video mode table if we are not familiar with it... */
3091    if (video_mode_ptr) {
3092        bzero(mode_map, sizeof(mode_map));
3093	bcopy(video_mode_ptr + MODE_PARAM_SIZE*console[0]->mode,
3094	      vgaregs2, sizeof(vgaregs2));
3095        switch (comp_vgaregs(vgaregs, video_mode_ptr
3096                    + MODE_PARAM_SIZE*console[0]->mode)) {
3097        case COMP_IDENTICAL:
3098            map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
3099            /*
3100             * This is a kludge for Toshiba DynaBook SS433 whose BIOS video
3101             * mode table entry has the actual # of rows at the offset 1;
3102	     * BIOSes from other manufacturers store the # of rows - 1 there.
3103	     * XXX
3104             */
3105	    rows_offset = vgaregs[1] + 1
3106		- video_mode_ptr[MODE_PARAM_SIZE*console[0]->mode + 1];
3107            break;
3108        case COMP_SIMILAR:
3109            map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
3110            mode_map[console[0]->mode] = vgaregs;
3111	    rows_offset = vgaregs[1] + 1
3112		- video_mode_ptr[MODE_PARAM_SIZE*console[0]->mode + 1];
3113            vgaregs[1] -= rows_offset - 1;
3114            break;
3115        case COMP_DIFFERENT:
3116        default:
3117            video_mode_ptr = NULL;
3118            mode_map[console[0]->mode] = vgaregs;
3119	    rows_offset = 1;
3120            break;
3121        }
3122    }
3123
3124    /* copy screen to temporary buffer */
3125    sc_bcopy(Crtat, sc_buffer,
3126	   console[0]->xsize * console[0]->ysize * sizeof(u_short));
3127
3128    console[0]->scr_buf = console[0]->mouse_pos = sc_buffer;
3129    console[0]->cursor_pos = console[0]->cursor_oldpos = sc_buffer + hw_cursor;
3130    console[0]->cursor_saveunder = *console[0]->cursor_pos;
3131    console[0]->xpos = hw_cursor % COL;
3132    console[0]->ypos = hw_cursor / COL;
3133    for (i=1; i<MAXCONS; i++)
3134	console[i] = NULL;
3135    kernel_console.esc = 0;
3136    kernel_console.attr_mask = NORMAL_ATTR;
3137    kernel_console.cur_attr =
3138	kernel_console.cur_color = kernel_console.std_color =
3139	kernel_default.std_color;
3140    kernel_console.rev_color = kernel_default.rev_color;
3141
3142    /* initialize mapscrn arrays to a one to one map */
3143    for (i=0; i<sizeof(scr_map); i++) {
3144	scr_map[i] = scr_rmap[i] = i;
3145    }
3146
3147    /* Save font and palette if VGA */
3148    if (crtc_vga) {
3149	if (fonts_loaded & FONT_16) {
3150		copy_font(LOAD, FONT_16, font_16);
3151	} else {
3152		copy_font(SAVE, FONT_16, font_16);
3153		fonts_loaded = FONT_16;
3154	}
3155	save_palette();
3156	set_destructive_cursor(console[0]);
3157    }
3158
3159#ifdef SC_SPLASH_SCREEN
3160    /*
3161     * Now put up a graphics image, and maybe cycle a
3162     * couble of palette entries for simple animation.
3163     */
3164    toggle_splash_screen(cur_console);
3165#endif
3166}
3167
3168static void
3169map_mode_table(char *map[], char *table, int max)
3170{
3171    int i;
3172
3173    for(i = 0; i < max; ++i)
3174	map[i] = table + i*MODE_PARAM_SIZE;
3175    for(; i < MODE_MAP_SIZE; ++i)
3176	map[i] = NULL;
3177}
3178
3179static u_char
3180map_mode_num(u_char mode)
3181{
3182    static struct {
3183        u_char from;
3184        u_char to;
3185    } mode_map[] = {
3186        { M_ENH_B80x43, M_ENH_B80x25 },
3187        { M_ENH_C80x43, M_ENH_C80x25 },
3188        { M_VGA_M80x30, M_VGA_M80x25 },
3189        { M_VGA_C80x30, M_VGA_C80x25 },
3190        { M_VGA_M80x50, M_VGA_M80x25 },
3191        { M_VGA_C80x50, M_VGA_C80x25 },
3192        { M_VGA_M80x60, M_VGA_M80x25 },
3193        { M_VGA_C80x60, M_VGA_C80x25 },
3194        { M_VGA_MODEX,  M_VGA_CG320 },
3195    };
3196    int i;
3197
3198    for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
3199        if (mode_map[i].from == mode)
3200            return mode_map[i].to;
3201    }
3202    return mode;
3203}
3204
3205static char
3206*get_mode_param(scr_stat *scp, u_char mode)
3207{
3208    if (mode >= MODE_MAP_SIZE)
3209	mode = map_mode_num(mode);
3210    if (mode < MODE_MAP_SIZE)
3211	return mode_map[mode];
3212    else
3213	return NULL;
3214}
3215
3216static scr_stat
3217*alloc_scp()
3218{
3219    scr_stat *scp;
3220
3221    scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_WAITOK);
3222    init_scp(scp);
3223    scp->scr_buf = scp->cursor_pos = scp->cursor_oldpos =
3224	(u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
3225			  M_DEVBUF, M_WAITOK);
3226    scp->mouse_pos = scp->mouse_oldpos =
3227	scp->scr_buf + ((scp->mouse_ypos/scp->font_size)*scp->xsize +
3228			scp->mouse_xpos/8);
3229    scp->history_head = scp->history_pos =
3230	(u_short *)malloc(scp->history_size*sizeof(u_short),
3231			  M_DEVBUF, M_WAITOK);
3232    bzero(scp->history_head, scp->history_size*sizeof(u_short));
3233    scp->history = scp->history_head;
3234/* SOS
3235    if (crtc_vga && video_mode_ptr)
3236	set_mode(scp);
3237*/
3238    clear_screen(scp);
3239    scp->cursor_saveunder = *scp->cursor_pos;
3240    return scp;
3241}
3242
3243static void
3244init_scp(scr_stat *scp)
3245{
3246    if (crtc_vga)
3247	if (crtc_addr == MONO_BASE)
3248	    scp->mode = M_VGA_M80x25;
3249	else
3250	    scp->mode = M_VGA_C80x25;
3251    else
3252	if (crtc_addr == MONO_BASE)
3253	    scp->mode = M_B80x25;
3254	else
3255	    scp->mode = M_C80x25;
3256    scp->initial_mode = scp->mode;
3257
3258    scp->font_size = 16;
3259    scp->xsize = COL;
3260    scp->ysize = ROW;
3261    scp->xpos = scp->ypos = 0;
3262    scp->saved_xpos = scp->saved_ypos = -1;
3263    scp->start = scp->xsize * scp->ysize;
3264    scp->end = 0;
3265    scp->term.esc = 0;
3266    scp->term.attr_mask = NORMAL_ATTR;
3267    scp->term.cur_attr =
3268	scp->term.cur_color = scp->term.std_color =
3269	current_default->std_color;
3270    scp->term.rev_color = current_default->rev_color;
3271    scp->border = BG_BLACK;
3272    scp->cursor_start = *(char *)pa_to_va(0x461);
3273    scp->cursor_end = *(char *)pa_to_va(0x460);
3274    scp->mouse_xpos = scp->xsize*8/2;
3275    scp->mouse_ypos = scp->ysize*scp->font_size/2;
3276    scp->mouse_cut_start = scp->mouse_cut_end = NULL;
3277    scp->mouse_signal = 0;
3278    scp->mouse_pid = 0;
3279    scp->mouse_proc = NULL;
3280    scp->bell_pitch = BELL_PITCH;
3281    scp->bell_duration = BELL_DURATION;
3282    scp->status = (*(char *)pa_to_va(0x417) & 0x20) ? NLKED : 0;
3283    scp->status |= CURSOR_ENABLED;
3284    scp->pid = 0;
3285    scp->proc = NULL;
3286    scp->smode.mode = VT_AUTO;
3287    scp->history_head = scp->history_pos = scp->history = NULL;
3288    scp->history_size = imax(SC_HISTORY_SIZE, scp->ysize) * scp->xsize;
3289}
3290
3291static u_char
3292*get_fstr(u_int c, u_int *len)
3293{
3294    u_int i;
3295
3296    if (!(c & FKEY))
3297	return(NULL);
3298    i = (c & 0xFF) - F_FN;
3299    if (i > n_fkey_tab)
3300	return(NULL);
3301    *len = fkey_tab[i].len;
3302    return(fkey_tab[i].str);
3303}
3304
3305static void
3306history_to_screen(scr_stat *scp)
3307{
3308    int i;
3309
3310    for (i=0; i<scp->ysize; i++)
3311	bcopy(scp->history + (((scp->history_pos - scp->history) +
3312	       scp->history_size-((i+1)*scp->xsize))%scp->history_size),
3313	       scp->scr_buf + (scp->xsize * (scp->ysize-1 - i)),
3314	       scp->xsize * sizeof(u_short));
3315    mark_all(scp);
3316}
3317
3318static int
3319history_up_line(scr_stat *scp)
3320{
3321    if (WRAPHIST(scp, scp->history_pos, -(scp->xsize*scp->ysize)) !=
3322	scp->history_head) {
3323	scp->history_pos = WRAPHIST(scp, scp->history_pos, -scp->xsize);
3324	history_to_screen(scp);
3325	return 0;
3326    }
3327    else
3328	return -1;
3329}
3330
3331static int
3332history_down_line(scr_stat *scp)
3333{
3334    if (scp->history_pos != scp->history_head) {
3335	scp->history_pos = WRAPHIST(scp, scp->history_pos, scp->xsize);
3336	history_to_screen(scp);
3337	return 0;
3338    }
3339    else
3340	return -1;
3341}
3342
3343/*
3344 * scgetc(flags) - get character from keyboard.
3345 * If flags & SCGETC_CN, then avoid harmful side effects.
3346 * If flags & SCGETC_NONBLOCK, then wait until a key is pressed, else
3347 * return NOKEY if there is nothing there.
3348 */
3349static u_int
3350scgetc(u_int flags)
3351{
3352    struct key_t *key;
3353    u_char scancode, keycode;
3354    u_int state, action;
3355    int c;
3356    static u_char esc_flag = 0, compose = 0;
3357    static u_int chr = 0;
3358
3359next_code:
3360    /* first see if there is something in the keyboard port */
3361    if (flags & SCGETC_NONBLOCK) {
3362	c = read_kbd_data_no_wait(sc_kbdc);
3363	if (c == -1)
3364	    return(NOKEY);
3365    } else {
3366	do {
3367	    c = read_kbd_data(sc_kbdc);
3368	} while(c == -1);
3369    }
3370    scancode = (u_char)c;
3371
3372    /* do the /dev/random device a favour */
3373    if (!(flags & SCGETC_CN))
3374	add_keyboard_randomness(scancode);
3375
3376    if (cur_console->status & KBD_RAW_MODE)
3377	return scancode;
3378
3379    keycode = scancode & 0x7F;
3380    switch (esc_flag) {
3381    case 0x00:      /* normal scancode */
3382	switch(scancode) {
3383	case 0xB8:  /* left alt (compose key) */
3384	    if (compose) {
3385		compose = 0;
3386		if (chr > 255) {
3387		    do_bell(cur_console,
3388			BELL_PITCH, BELL_DURATION);
3389		    chr = 0;
3390		}
3391	    }
3392	    break;
3393	case 0x38:
3394	    if (!compose) {
3395		compose = 1;
3396		chr = 0;
3397	    }
3398	    break;
3399	case 0xE0:
3400	case 0xE1:
3401	    esc_flag = scancode;
3402	    goto next_code;
3403	}
3404	break;
3405    case 0xE0:      /* 0xE0 prefix */
3406	esc_flag = 0;
3407	switch (keycode) {
3408	case 0x1C:  /* right enter key */
3409	    keycode = 0x59;
3410	    break;
3411	case 0x1D:  /* right ctrl key */
3412	    keycode = 0x5A;
3413	    break;
3414	case 0x35:  /* keypad divide key */
3415	    keycode = 0x5B;
3416	    break;
3417	case 0x37:  /* print scrn key */
3418	    keycode = 0x5C;
3419	    break;
3420	case 0x38:  /* right alt key (alt gr) */
3421	    keycode = 0x5D;
3422	    break;
3423	case 0x47:  /* grey home key */
3424	    keycode = 0x5E;
3425	    break;
3426	case 0x48:  /* grey up arrow key */
3427	    keycode = 0x5F;
3428	    break;
3429	case 0x49:  /* grey page up key */
3430	    keycode = 0x60;
3431	    break;
3432	case 0x4B:  /* grey left arrow key */
3433	    keycode = 0x61;
3434	    break;
3435	case 0x4D:  /* grey right arrow key */
3436	    keycode = 0x62;
3437	    break;
3438	case 0x4F:  /* grey end key */
3439	    keycode = 0x63;
3440	    break;
3441	case 0x50:  /* grey down arrow key */
3442	    keycode = 0x64;
3443	    break;
3444	case 0x51:  /* grey page down key */
3445	    keycode = 0x65;
3446	    break;
3447	case 0x52:  /* grey insert key */
3448	    keycode = 0x66;
3449	    break;
3450	case 0x53:  /* grey delete key */
3451	    keycode = 0x67;
3452	    break;
3453
3454	/* the following 3 are only used on the MS "Natural" keyboard */
3455	case 0x5b:  /* left Window key */
3456	    keycode = 0x69;
3457	    break;
3458	case 0x5c:  /* right Window key */
3459	    keycode = 0x6a;
3460	    break;
3461	case 0x5d:  /* menu key */
3462	    keycode = 0x6b;
3463	    break;
3464	default:    /* ignore everything else */
3465	    goto next_code;
3466	}
3467	break;
3468    case 0xE1:      /* 0xE1 prefix */
3469	esc_flag = 0;
3470	if (keycode == 0x1D)
3471	    esc_flag = 0x1D;
3472	goto next_code;
3473	/* NOT REACHED */
3474    case 0x1D:      /* pause / break */
3475	esc_flag = 0;
3476	if (keycode != 0x45)
3477	    goto next_code;
3478	keycode = 0x68;
3479	break;
3480    }
3481
3482    if (cur_console->status & KBD_CODE_MODE)
3483	return (keycode | (scancode & 0x80));
3484
3485    /* if scroll-lock pressed allow history browsing */
3486    if (cur_console->history && cur_console->status & SLKED) {
3487	int i;
3488
3489	cur_console->status &= ~CURSOR_ENABLED;
3490	if (!(cur_console->status & BUFFER_SAVED)) {
3491	    cur_console->status |= BUFFER_SAVED;
3492	    cur_console->history_save = cur_console->history_head;
3493
3494	    /* copy screen into top of history buffer */
3495	    for (i=0; i<cur_console->ysize; i++) {
3496		bcopy(cur_console->scr_buf + (cur_console->xsize * i),
3497		       cur_console->history_head,
3498		       cur_console->xsize * sizeof(u_short));
3499		cur_console->history_head += cur_console->xsize;
3500		if (cur_console->history_head + cur_console->xsize >
3501		    cur_console->history + cur_console->history_size)
3502		    cur_console->history_head=cur_console->history;
3503	    }
3504	    cur_console->history_pos = cur_console->history_head;
3505	    history_to_screen(cur_console);
3506	}
3507	switch (scancode) {
3508	case 0x47:  /* home key */
3509	    cur_console->history_pos = cur_console->history_head;
3510	    history_to_screen(cur_console);
3511	    goto next_code;
3512
3513	case 0x4F:  /* end key */
3514	    cur_console->history_pos =
3515		WRAPHIST(cur_console, cur_console->history_head,
3516			 cur_console->xsize*cur_console->ysize);
3517	    history_to_screen(cur_console);
3518	    goto next_code;
3519
3520	case 0x48:  /* up arrow key */
3521	    if (history_up_line(cur_console))
3522		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3523	    goto next_code;
3524
3525	case 0x50:  /* down arrow key */
3526	    if (history_down_line(cur_console))
3527		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3528	    goto next_code;
3529
3530	case 0x49:  /* page up key */
3531	    for (i=0; i<cur_console->ysize; i++)
3532	    if (history_up_line(cur_console)) {
3533		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3534		break;
3535	    }
3536	    goto next_code;
3537
3538	case 0x51:  /* page down key */
3539	    for (i=0; i<cur_console->ysize; i++)
3540	    if (history_down_line(cur_console)) {
3541		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3542		break;
3543	    }
3544	    goto next_code;
3545	}
3546    }
3547
3548    if (compose) {
3549	switch (scancode) {
3550	/* key pressed process it */
3551	case 0x47: case 0x48: case 0x49:    /* keypad 7,8,9 */
3552	    chr = (scancode - 0x40) + chr*10;
3553	    goto next_code;
3554	case 0x4B: case 0x4C: case 0x4D:    /* keypad 4,5,6 */
3555	    chr = (scancode - 0x47) + chr*10;
3556	    goto next_code;
3557	case 0x4F: case 0x50: case 0x51:    /* keypad 1,2,3 */
3558	    chr = (scancode - 0x4E) + chr*10;
3559	    goto next_code;
3560	case 0x52:              /* keypad 0 */
3561	    chr *= 10;
3562	    goto next_code;
3563
3564	/* key release, no interest here */
3565	case 0xC7: case 0xC8: case 0xC9:    /* keypad 7,8,9 */
3566	case 0xCB: case 0xCC: case 0xCD:    /* keypad 4,5,6 */
3567	case 0xCF: case 0xD0: case 0xD1:    /* keypad 1,2,3 */
3568	case 0xD2:              /* keypad 0 */
3569	    goto next_code;
3570
3571	case 0x38:              /* left alt key */
3572	    break;
3573	default:
3574	    if (chr) {
3575		compose = chr = 0;
3576		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3577		goto next_code;
3578	    }
3579	    break;
3580	}
3581    }
3582
3583    state = (shfts ? 1 : 0 ) | (2 * (ctls ? 1 : 0)) | (4 * (alts ? 1 : 0));
3584    if ((!agrs && (cur_console->status & ALKED))
3585	|| (agrs && !(cur_console->status & ALKED)))
3586	keycode += ALTGR_OFFSET;
3587    key = &key_map.key[keycode];
3588    if ( ((key->flgs & FLAG_LOCK_C) && (cur_console->status & CLKED))
3589	 || ((key->flgs & FLAG_LOCK_N) && (cur_console->status & NLKED)) )
3590	state ^= 1;
3591
3592    /* Check for make/break */
3593    action = key->map[state];
3594    if (scancode & 0x80) {      /* key released */
3595	if (key->spcl & (0x80>>state)) {
3596	    switch (action) {
3597	    case LSH:
3598		shfts &= ~1;
3599		break;
3600	    case RSH:
3601		shfts &= ~2;
3602		break;
3603	    case LCTR:
3604		ctls &= ~1;
3605		break;
3606	    case RCTR:
3607		ctls &= ~2;
3608		break;
3609	    case LALT:
3610		alts &= ~1;
3611		break;
3612	    case RALT:
3613		alts &= ~2;
3614		break;
3615	    case NLK:
3616		nlkcnt = 0;
3617		break;
3618	    case CLK:
3619		clkcnt = 0;
3620		break;
3621	    case SLK:
3622		slkcnt = 0;
3623		break;
3624	    case ASH:
3625		agrs = 0;
3626		break;
3627	    case ALK:
3628		alkcnt = 0;
3629		break;
3630	    case META:
3631		metas = 0;
3632		break;
3633	    }
3634	}
3635	if (chr && !compose) {
3636	    action = chr;
3637	    chr = 0;
3638	    return(action);
3639	}
3640    } else {
3641	/* key pressed */
3642	if (key->spcl & (0x80>>state)) {
3643	    switch (action) {
3644	    /* LOCKING KEYS */
3645	    case NLK:
3646#ifdef SC_SPLASH_SCREEN
3647		toggle_splash_screen(cur_console); /* SOS XXX */
3648#endif
3649		if (!nlkcnt) {
3650		    nlkcnt++;
3651		    if (cur_console->status & NLKED)
3652			cur_console->status &= ~NLKED;
3653		    else
3654			cur_console->status |= NLKED;
3655		    update_leds(cur_console->status);
3656		}
3657		break;
3658	    case CLK:
3659		if (!clkcnt) {
3660		    clkcnt++;
3661		    if (cur_console->status & CLKED)
3662			cur_console->status &= ~CLKED;
3663		    else
3664			cur_console->status |= CLKED;
3665		    update_leds(cur_console->status);
3666		}
3667		break;
3668	    case SLK:
3669		if (!slkcnt) {
3670		    slkcnt++;
3671		    if (cur_console->status & SLKED) {
3672			cur_console->status &= ~SLKED;
3673			if (cur_console->status & BUFFER_SAVED){
3674			    int i;
3675			    u_short *ptr = cur_console->history_save;
3676
3677			    for (i=0; i<cur_console->ysize; i++) {
3678				bcopy(ptr,
3679				       cur_console->scr_buf +
3680				       (cur_console->xsize*i),
3681				       cur_console->xsize * sizeof(u_short));
3682				ptr += cur_console->xsize;
3683				if (ptr + cur_console->xsize >
3684				    cur_console->history +
3685				    cur_console->history_size)
3686				    ptr = cur_console->history;
3687			    }
3688			    cur_console->status &= ~BUFFER_SAVED;
3689			    cur_console->history_head=cur_console->history_save;
3690			    cur_console->status |= CURSOR_ENABLED;
3691			    mark_all(cur_console);
3692			}
3693			scstart(VIRTUAL_TTY(get_scr_num()));
3694		    }
3695		    else
3696			cur_console->status |= SLKED;
3697		    update_leds(cur_console->status);
3698		}
3699		break;
3700	    case ALK:
3701		if (!alkcnt) {
3702		    alkcnt++;
3703		    if (cur_console->status & ALKED)
3704			cur_console->status &= ~ALKED;
3705		    else
3706			cur_console->status |= ALKED;
3707		    update_leds(cur_console->status);
3708		}
3709		break;
3710
3711	    /* NON-LOCKING KEYS */
3712	    case NOP:
3713		break;
3714	    case SPSC:
3715#ifdef SC_SPLASH_SCREEN
3716		accents = 0;
3717		toggle_splash_screen(cur_console);
3718#endif
3719		break;
3720	    case RBT:
3721		accents = 0;
3722		shutdown_nice();
3723		break;
3724	    case SUSP:
3725#if NAPM > 0
3726		accents = 0;
3727		apm_suspend();
3728#endif
3729		break;
3730
3731	    case DBG:
3732#ifdef DDB          /* try to switch to console 0 */
3733		accents = 0;
3734		if (cur_console->smode.mode == VT_AUTO &&
3735		    console[0]->smode.mode == VT_AUTO)
3736		    switch_scr(cur_console, 0);
3737		Debugger("manual escape to debugger");
3738#else
3739		printf("No debugger in kernel\n");
3740#endif
3741		break;
3742	    case LSH:
3743		shfts |= 1;
3744		break;
3745	    case RSH:
3746		shfts |= 2;
3747		break;
3748	    case LCTR:
3749		ctls |= 1;
3750		break;
3751	    case RCTR:
3752		ctls |= 2;
3753		break;
3754	    case LALT:
3755		alts |= 1;
3756		break;
3757	    case RALT:
3758		alts |= 2;
3759		break;
3760	    case ASH:
3761		agrs = 1;
3762		break;
3763	    case META:
3764		metas = 1;
3765		break;
3766	    case NEXT:
3767		{
3768		int next, this = get_scr_num();
3769		accents = 0;
3770		for (next = this+1; next != this; next = (next+1)%MAXCONS) {
3771		    struct tty *tp = VIRTUAL_TTY(next);
3772		    if (tp->t_state & TS_ISOPEN) {
3773			switch_scr(cur_console, next);
3774			break;
3775		    }
3776		}
3777		}
3778		break;
3779	    case BTAB:
3780		accents = 0;
3781		return(BKEY);
3782	    default:
3783		if (action >= F_ACC && action <= L_ACC) {
3784		    /* turn it into an index */
3785		    action -= F_ACC - 1;
3786		    if ((action > accent_map.n_accs)
3787			|| (accent_map.acc[action - 1].accchar == 0)) {
3788			/*
3789			 * The index is out of range or pointing to an
3790			 * empty entry.
3791			 */
3792			accents = 0;
3793			do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3794		    }
3795		    /*
3796		     * If the same accent key has been hit twice,
3797		     * produce the accent char itself.
3798		     */
3799		    if (action == accents) {
3800			action = accent_map.acc[accents - 1].accchar;
3801			accents = 0;
3802			if (metas)
3803			    action |= MKEY;
3804			return (action);
3805		    }
3806		    /* remember the index and wait for the next key stroke */
3807		    accents = action;
3808		    break;
3809		}
3810		if (accents > 0) {
3811		    accents = 0;
3812		    do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3813		}
3814		if (action >= F_SCR && action <= L_SCR) {
3815		    switch_scr(cur_console, action - F_SCR);
3816		    break;
3817		}
3818		if (action >= F_FN && action <= L_FN)
3819		    action |= FKEY;
3820		return(action);
3821	    }
3822	}
3823	else {
3824	    if (accents) {
3825		struct acc_t *acc;
3826		int i;
3827
3828		acc = &accent_map.acc[accents - 1];
3829		accents = 0;
3830		/*
3831		 * If the accent key is followed by the space key,
3832		 * produce the accent char itself.
3833		 */
3834		if (action == ' ') {
3835		    action = acc->accchar;
3836		    if (metas)
3837			action |= MKEY;
3838		    return (action);
3839		}
3840		for (i = 0; i < NUM_ACCENTCHARS; ++i) {
3841		    if (acc->map[i][0] == 0)	/* end of the map entry */
3842			break;
3843		    if (acc->map[i][0] == action) {
3844			action = acc->map[i][1];
3845			if (metas)
3846			    action |= MKEY;
3847			return (action);
3848		    }
3849		}
3850		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
3851		goto next_code;
3852	    }
3853	    if (metas)
3854		action |= MKEY;
3855	    return(action);
3856	}
3857    }
3858    goto next_code;
3859}
3860
3861int
3862scmmap(dev_t dev, int offset, int nprot)
3863{
3864    if (offset > 0x20000 - PAGE_SIZE)
3865	return -1;
3866    return i386_btop((VIDEOMEM + offset));
3867}
3868
3869/*
3870 * Calculate hardware attributes word using logical attributes mask and
3871 * hardware colors
3872 */
3873
3874static int
3875mask2attr(struct term_stat *term)
3876{
3877    int attr, mask = term->attr_mask;
3878
3879    if (mask & REVERSE_ATTR) {
3880	attr = ((mask & FOREGROUND_CHANGED) ?
3881		((term->cur_color & 0xF000) >> 4) :
3882		(term->rev_color & 0x0F00)) |
3883	       ((mask & BACKGROUND_CHANGED) ?
3884		((term->cur_color & 0x0F00) << 4) :
3885		(term->rev_color & 0xF000));
3886    } else
3887	attr = term->cur_color;
3888
3889    /* XXX: underline mapping for Hercules adapter can be better */
3890    if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
3891	attr ^= 0x0800;
3892    if (mask & BLINK_ATTR)
3893	attr ^= 0x8000;
3894
3895    return attr;
3896}
3897
3898static void
3899set_keyboard(int command, int data)
3900{
3901    int s;
3902
3903    if (sc_kbdc == NULL)
3904	return;
3905
3906    /* prevent the timeout routine from polling the keyboard */
3907    if (!kbdc_lock(sc_kbdc, TRUE))
3908	return;
3909
3910    /* disable the keyboard and mouse interrupt */
3911    s = spltty();
3912#if 0
3913    c = get_controller_command_byte(sc_kbdc);
3914    if ((c == -1)
3915	|| !set_controller_command_byte(sc_kbdc,
3916            kbdc_get_device_mask(sc_kbdc),
3917            KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
3918                | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
3919	/* CONTROLLER ERROR */
3920        kbdc_lock(sc_kbdc, FALSE);
3921	splx(s);
3922	return;
3923    }
3924    /*
3925     * Now that the keyboard controller is told not to generate
3926     * the keyboard and mouse interrupts, call `splx()' to allow
3927     * the other tty interrupts. The clock interrupt may also occur,
3928     * but the timeout routine (`scrn_timer()') will be blocked
3929     * by the lock flag set via `kbdc_lock()'
3930     */
3931    splx(s);
3932#endif
3933
3934    if (send_kbd_command_and_data(sc_kbdc, command, data) != KBD_ACK)
3935        send_kbd_command(sc_kbdc, KBDC_ENABLE_KBD);
3936
3937#if 0
3938    /* restore the interrupts */
3939    if (!set_controller_command_byte(sc_kbdc,
3940            kbdc_get_device_mask(sc_kbdc),
3941	    c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
3942	/* CONTROLLER ERROR */
3943    }
3944#else
3945    splx(s);
3946#endif
3947    kbdc_lock(sc_kbdc, FALSE);
3948}
3949
3950static void
3951update_leds(int which)
3952{
3953    static u_char xlate_leds[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
3954
3955    /* replace CAPS led with ALTGR led for ALTGR keyboards */
3956    if (key_map.n_keys > ALTGR_OFFSET) {
3957	if (which & ALKED)
3958	    which |= CLKED;
3959	else
3960	    which &= ~CLKED;
3961    }
3962
3963    set_keyboard(KBDC_SET_LEDS, xlate_leds[which & LED_MASK]);
3964}
3965
3966void
3967set_mode(scr_stat *scp)
3968{
3969    char special_modetable[MODE_PARAM_SIZE];
3970    char *mp;
3971
3972    if (scp != cur_console)
3973	return;
3974
3975    /*
3976     * even if mode switching is disabled, we can change back
3977     * to the initial mode or the custom mode based on the initial
3978     * mode if we have saved register values upon start-up.
3979     */
3980    mp = get_mode_param(scp, scp->mode);
3981    if (mp == NULL)
3982	return;
3983    bcopy(mp, &special_modetable, sizeof(special_modetable));
3984
3985    /* setup video hardware for the given mode */
3986    switch (scp->mode) {
3987    case M_VGA_C80x60: case M_VGA_M80x60:
3988	special_modetable[2]  = 0x08;
3989	special_modetable[19] = 0x47;
3990	goto special_480l;
3991
3992    case M_VGA_C80x30: case M_VGA_M80x30:
3993	special_modetable[19] = 0x4f;
3994special_480l:
3995	special_modetable[9] |= 0xc0;
3996	special_modetable[16] = 0x08;
3997	special_modetable[17] = 0x3e;
3998	special_modetable[26] = 0xea;
3999	special_modetable[28] = 0xdf;
4000	special_modetable[31] = 0xe7;
4001	special_modetable[32] = 0x04;
4002	goto setup_mode;
4003
4004    case M_ENH_C80x43: case M_ENH_B80x43:
4005	special_modetable[28] = 87;
4006	goto special_80x50;
4007
4008    case M_VGA_C80x50: case M_VGA_M80x50:
4009special_80x50:
4010	special_modetable[2] = 8;
4011	special_modetable[19] = 7;
4012	goto setup_mode;
4013
4014    case M_VGA_C40x25: case M_VGA_C80x25:
4015    case M_VGA_M80x25:
4016    case M_B40x25:     case M_C40x25:
4017    case M_B80x25:     case M_C80x25:
4018    case M_ENH_B40x25: case M_ENH_C40x25:
4019    case M_ENH_B80x25: case M_ENH_C80x25:
4020    case M_EGAMONO80x25:
4021
4022setup_mode:
4023	set_vgaregs(special_modetable);
4024	scp->font_size = special_modetable[2];
4025
4026	/* set font type (size) */
4027	if (scp->font_size < 14) {
4028	    if (fonts_loaded & FONT_8)
4029		copy_font(LOAD, FONT_8, font_8);
4030	    outb(TSIDX, 0x03); outb(TSREG, 0x0A);   /* font 2 */
4031	} else if (scp->font_size >= 16) {
4032	    if (fonts_loaded & FONT_16)
4033		copy_font(LOAD, FONT_16, font_16);
4034	    outb(TSIDX, 0x03); outb(TSREG, 0x00);   /* font 0 */
4035	} else {
4036	    if (fonts_loaded & FONT_14)
4037		copy_font(LOAD, FONT_14, font_14);
4038	    outb(TSIDX, 0x03); outb(TSREG, 0x05);   /* font 1 */
4039	}
4040	if (flags & CHAR_CURSOR)
4041	    set_destructive_cursor(scp);
4042	mark_all(scp);
4043	break;
4044
4045    case M_VGA_MODEX:
4046	/* "unchain" the VGA mode */
4047	special_modetable[5-1+0x04] &= 0xf7;
4048	special_modetable[5-1+0x04] |= 0x04;
4049	/* turn off doubleword mode */
4050	special_modetable[10+0x14] &= 0xbf;
4051	/* turn off word adressing */
4052	special_modetable[10+0x17] |= 0x40;
4053	/* set logical screen width */
4054	special_modetable[10+0x13] = 80;
4055	/* set 240 lines */
4056	special_modetable[10+0x11] = 0x2c;
4057	special_modetable[10+0x06] = 0x0d;
4058	special_modetable[10+0x07] = 0x3e;
4059	special_modetable[10+0x10] = 0xea;
4060	special_modetable[10+0x11] = 0xac;
4061	special_modetable[10+0x12] = 0xdf;
4062	special_modetable[10+0x15] = 0xe7;
4063	special_modetable[10+0x16] = 0x06;
4064	/* set vertical sync polarity to reflect aspect ratio */
4065	special_modetable[9] = 0xe3;
4066	goto setup_grmode;
4067
4068    case M_BG320:     case M_CG320:     case M_BG640:
4069    case M_CG320_D:   case M_CG640_E:
4070    case M_CG640x350: case M_ENH_CG640:
4071    case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
4072
4073setup_grmode:
4074	set_vgaregs(special_modetable);
4075	scp->font_size = FONT_NONE;
4076	break;
4077
4078    default:
4079	/* call user defined function XXX */
4080	break;
4081    }
4082
4083    /* set border color for this (virtual) console */
4084    set_border(scp->border);
4085    return;
4086}
4087
4088void
4089set_border(u_char color)
4090{
4091    switch (crtc_type) {
4092    case KD_EGA:
4093    case KD_VGA:
4094        inb(crtc_addr + 6);		/* reset flip-flop */
4095        outb(ATC, 0x31); outb(ATC, color);
4096	break;
4097    case KD_CGA:
4098	outb(crtc_addr + 5, color & 0x0f); /* color select register */
4099	break;
4100    case KD_MONO:
4101    case KD_HERCULES:
4102    default:
4103	break;
4104    }
4105}
4106
4107static void
4108set_vgaregs(char *modetable)
4109{
4110    int i, s = splhigh();
4111
4112    outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
4113    outb(TSIDX, 0x07); outb(TSREG, 0x00);   	/* unlock registers */
4114    for (i=0; i<4; i++) {           		/* program sequencer */
4115	outb(TSIDX, i+1);
4116	outb(TSREG, modetable[i+5]);
4117    }
4118    outb(MISC, modetable[9]);       		/* set dot-clock */
4119    outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
4120    outb(crtc_addr, 0x11);
4121    outb(crtc_addr+1, inb(crtc_addr+1) & 0x7F);
4122    for (i=0; i<25; i++) {          		/* program crtc */
4123	outb(crtc_addr, i);
4124	if (i == 14 || i == 15)     		/* no hardware cursor */
4125	    outb(crtc_addr+1, 0xff);
4126	else
4127	    outb(crtc_addr+1, modetable[i+10]);
4128    }
4129    inb(crtc_addr+6);           		/* reset flip-flop */
4130    for (i=0; i<20; i++) {          		/* program attribute ctrl */
4131	outb(ATC, i);
4132	outb(ATC, modetable[i+35]);
4133    }
4134    for (i=0; i<9; i++) {           		/* program graph data ctrl */
4135	outb(GDCIDX, i);
4136	outb(GDCREG, modetable[i+55]);
4137    }
4138    inb(crtc_addr+6);           		/* reset flip-flop */
4139    outb(ATC, 0x20);            		/* enable palette */
4140    splx(s);
4141}
4142
4143static void
4144read_vgaregs(char *buf)
4145{
4146    int i, j;
4147    int s;
4148
4149    bzero(buf, MODE_PARAM_SIZE);
4150
4151    s = splhigh();
4152
4153    outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
4154    outb(TSIDX, 0x07); outb(TSREG, 0x00);   	/* unlock registers */
4155    for (i=0, j=5; i<4; i++) {
4156	outb(TSIDX, i+1);
4157	buf[j++] = inb(TSREG);
4158    }
4159    buf[9] = inb(MISC + 10);      		/* dot-clock */
4160    outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
4161
4162    for (i=0, j=10; i<25; i++) {       		/* crtc */
4163	outb(crtc_addr, i);
4164	buf[j++] = inb(crtc_addr+1);
4165    }
4166    for (i=0, j=35; i<20; i++) {          	/* attribute ctrl */
4167        inb(crtc_addr+6);           		/* reset flip-flop */
4168	outb(ATC, i);
4169	buf[j++] = inb(ATC + 1);
4170    }
4171    for (i=0, j=55; i<9; i++) {           	/* graph data ctrl */
4172	outb(GDCIDX, i);
4173	buf[j++] = inb(GDCREG);
4174    }
4175    inb(crtc_addr+6);           		/* reset flip-flop */
4176    outb(ATC, 0x20);            		/* enable palette */
4177
4178    buf[0] = *(char *)pa_to_va(0x44a);		/* COLS */
4179    buf[1] = *(char *)pa_to_va(0x484);		/* ROWS */
4180    buf[2] = *(char *)pa_to_va(0x485);		/* POINTS */
4181    buf[3] = *(char *)pa_to_va(0x44c);
4182    buf[4] = *(char *)pa_to_va(0x44d);
4183
4184    splx(s);
4185}
4186
4187static int
4188comp_vgaregs(u_char *buf1, u_char *buf2)
4189{
4190    static struct {
4191        u_char mask;
4192    } params[MODE_PARAM_SIZE] = {
4193	0xff, 0x00, 0xff, 		/* COLS, ROWS, POINTS */
4194	0xff, 0xff, 			/* page length */
4195	0xfe, 0xff, 0xff, 0xff,		/* sequencer registers */
4196	0xf3,				/* misc register */
4197	0xff, 0xff, 0xff, 0x7f, 0xff,	/* CRTC */
4198	0xff, 0xff, 0xff, 0x7f, 0xff,
4199	0x00, 0x00, 0x00, 0x00, 0x00,
4200	0x00, 0xff, 0x7f, 0xff, 0xff,
4201	0x7f, 0xff, 0xff, 0xef, 0xff,
4202	0xff, 0xff, 0xff, 0xff, 0xff,	/* attribute controller registers */
4203	0xff, 0xff, 0xff, 0xff, 0xff,
4204	0xff, 0xff, 0xff, 0xff, 0xff,
4205	0xff, 0xff, 0xff, 0xff, 0xf0,
4206	0xff, 0xff, 0xff, 0xff, 0xff,	/* GDC register */
4207	0xff, 0xff, 0xff, 0xff,
4208    };
4209    int identical = TRUE;
4210    int i;
4211
4212    for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
4213	if (params[i].mask == 0)	/* don't care */
4214	    continue;
4215	if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
4216	    return COMP_DIFFERENT;
4217	if (buf1[i] != buf2[i])
4218	    identical = FALSE;
4219    }
4220    return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
4221
4222#if 0
4223    for(i = 0; i < 20; ++i) {
4224	if (*buf1++ != *buf2++)
4225	    return COMP_DIFFERENT;
4226    }
4227    buf1 += 2;  /* skip the cursor shape */
4228    buf2 += 2;
4229    for(i = 22; i < 24; ++i) {
4230	if (*buf1++ != *buf2++)
4231	    return COMP_DIFFERENT;
4232    }
4233    buf1 += 2;  /* skip the cursor position */
4234    buf2 += 2;
4235    for(i = 26; i < MODE_PARAM_SIZE; ++i) {
4236	if (*buf1++ != *buf2++)
4237	    return COMP_DIFFERENT;
4238    }
4239    return COMP_IDENTICAL;
4240#endif
4241}
4242
4243static void
4244dump_vgaregs(u_char *buf)
4245{
4246    int i;
4247
4248    for(i = 0; i < MODE_PARAM_SIZE;) {
4249	printf("%02x ", buf[i]);
4250	if ((++i % 16) == 0)
4251	    printf("\n");
4252    }
4253}
4254
4255static void
4256set_font_mode(u_char *buf)
4257{
4258    int s = splhigh();
4259
4260    /* save register values */
4261    outb(TSIDX, 0x02); buf[0] = inb(TSREG);
4262    outb(TSIDX, 0x04); buf[1] = inb(TSREG);
4263    outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
4264    outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
4265    outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
4266    inb(crtc_addr + 6);
4267    outb(ATC, 0x10); buf[5] = inb(ATC + 1);
4268
4269    /* setup vga for loading fonts (graphics plane mode) */
4270    inb(crtc_addr+6);           		/* reset flip-flop */
4271    outb(ATC, 0x10); outb(ATC, 0x01);
4272    inb(crtc_addr+6);               		/* reset flip-flop */
4273    outb(ATC, 0x20);            		/* enable palette */
4274
4275#if SLOW_VGA
4276    outb(TSIDX, 0x02); outb(TSREG, 0x04);
4277    outb(TSIDX, 0x04); outb(TSREG, 0x06);
4278    outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
4279    outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
4280    outb(GDCIDX, 0x06); outb(GDCREG, 0x05);
4281#else
4282    outw(TSIDX, 0x0402);
4283    outw(TSIDX, 0x0604);
4284    outw(GDCIDX, 0x0204);
4285    outw(GDCIDX, 0x0005);
4286    outw(GDCIDX, 0x0506);               /* addr = a0000, 64kb */
4287#endif
4288    splx(s);
4289}
4290
4291static void
4292set_normal_mode(u_char *buf)
4293{
4294    char *modetable;
4295    int s = splhigh();
4296
4297    /* setup vga for normal operation mode again */
4298    inb(crtc_addr+6);           		/* reset flip-flop */
4299    outb(ATC, 0x10); outb(ATC, buf[5]);
4300    inb(crtc_addr+6);               		/* reset flip-flop */
4301    outb(ATC, 0x20);            		/* enable palette */
4302
4303#if SLOW_VGA
4304    outb(TSIDX, 0x02); outb(TSREG, buf[0]);
4305    outb(TSIDX, 0x04); outb(TSREG, buf[1]);
4306    outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
4307    outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
4308    if (crtc_addr == MONO_BASE) {
4309	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
4310    } else {
4311	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
4312    }
4313#else
4314    outw(TSIDX, 0x0002 | (buf[0] << 8));
4315    outw(TSIDX, 0x0004 | (buf[1] << 8));
4316    outw(GDCIDX, 0x0004 | (buf[2] << 8));
4317    outw(GDCIDX, 0x0005 | (buf[3] << 8));
4318    if (crtc_addr == MONO_BASE)
4319        outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
4320    else
4321        outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
4322#endif
4323    splx(s);
4324}
4325
4326void
4327copy_font(int operation, int font_type, char* font_image)
4328{
4329    int ch, line, segment, fontsize;
4330    u_char buf[PARAM_BUFSIZE];
4331    u_char val;
4332
4333    switch (font_type) {
4334    default:
4335    case FONT_8:
4336	segment = 0x8000;
4337	fontsize = 8;
4338	break;
4339    case FONT_14:
4340	segment = 0x4000;
4341	fontsize = 14;
4342	break;
4343    case FONT_16:
4344	segment = 0x0000;
4345	fontsize = 16;
4346	break;
4347    }
4348    outb(TSIDX, 0x01); val = inb(TSREG);        /* disable screen */
4349    outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
4350    set_font_mode(buf);
4351    for (ch=0; ch < 256; ch++)
4352	for (line=0; line < fontsize; line++)
4353	if (operation)
4354	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line) =
4355		    font_image[(ch*fontsize)+line];
4356	else
4357	    font_image[(ch*fontsize)+line] =
4358	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line);
4359    set_normal_mode(buf);
4360    outb(TSIDX, 0x01); outb(TSREG, val & 0xDF); /* enable screen */
4361}
4362
4363static void
4364set_destructive_cursor(scr_stat *scp)
4365{
4366    u_char buf[PARAM_BUFSIZE];
4367    u_char cursor[32];
4368    caddr_t address;
4369    int i;
4370    char *font_buffer;
4371
4372    if (scp->font_size < 14) {
4373	font_buffer = font_8;
4374	address = (caddr_t)VIDEOMEM + 0x8000;
4375    }
4376    else if (scp->font_size >= 16) {
4377	font_buffer = font_16;
4378	address = (caddr_t)VIDEOMEM;
4379    }
4380    else {
4381	font_buffer = font_14;
4382	address = (caddr_t)VIDEOMEM + 0x4000;
4383    }
4384
4385    if (scp->status & MOUSE_VISIBLE) {
4386	if ((scp->cursor_saveunder & 0xff) == 0xd0)
4387    	    bcopy(&scp->mouse_cursor[0], cursor, scp->font_size);
4388	else if ((scp->cursor_saveunder & 0xff) == 0xd1)
4389    	    bcopy(&scp->mouse_cursor[32], cursor, scp->font_size);
4390	else if ((scp->cursor_saveunder & 0xff) == 0xd2)
4391    	    bcopy(&scp->mouse_cursor[64], cursor, scp->font_size);
4392	else if ((scp->cursor_saveunder & 0xff) == 0xd3)
4393    	    bcopy(&scp->mouse_cursor[96], cursor, scp->font_size);
4394	else
4395	    bcopy(font_buffer+((scp->cursor_saveunder & 0xff)*scp->font_size),
4396 	       	   cursor, scp->font_size);
4397    }
4398    else
4399    	bcopy(font_buffer + ((scp->cursor_saveunder & 0xff) * scp->font_size),
4400 	       cursor, scp->font_size);
4401    for (i=0; i<32; i++)
4402	if ((i >= scp->cursor_start && i <= scp->cursor_end) ||
4403	    (scp->cursor_start >= scp->font_size && i == scp->font_size - 1))
4404	    cursor[i] |= 0xff;
4405#if 1
4406    while (!(inb(crtc_addr+6) & 0x08)) /* wait for vertical retrace */ ;
4407#endif
4408    set_font_mode(buf);
4409    sc_bcopy(cursor, (char *)pa_to_va(address) + DEAD_CHAR * 32, 32);
4410    set_normal_mode(buf);
4411}
4412
4413static void
4414set_mouse_pos(scr_stat *scp)
4415{
4416    static int last_xpos = -1, last_ypos = -1;
4417
4418    if (scp->mouse_xpos < 0)
4419	scp->mouse_xpos = 0;
4420    if (scp->mouse_ypos < 0)
4421	scp->mouse_ypos = 0;
4422    if (scp->status & UNKNOWN_MODE) {
4423        if (scp->mouse_xpos > scp->xpixel-1)
4424	    scp->mouse_xpos = scp->xpixel-1;
4425        if (scp->mouse_ypos > scp->ypixel-1)
4426	    scp->mouse_ypos = scp->ypixel-1;
4427	return;
4428    }
4429    if (scp->mouse_xpos > (scp->xsize*8)-1)
4430	scp->mouse_xpos = (scp->xsize*8)-1;
4431    if (scp->mouse_ypos > (scp->ysize*scp->font_size)-1)
4432	scp->mouse_ypos = (scp->ysize*scp->font_size)-1;
4433
4434    if (scp->mouse_xpos != last_xpos || scp->mouse_ypos != last_ypos) {
4435	scp->status |= MOUSE_MOVED;
4436
4437    	scp->mouse_pos = scp->scr_buf +
4438	    ((scp->mouse_ypos/scp->font_size)*scp->xsize + scp->mouse_xpos/8);
4439
4440	if ((scp->status & MOUSE_VISIBLE) && (scp->status & MOUSE_CUTTING))
4441	    mouse_cut(scp);
4442    }
4443}
4444
4445#define isspace(c)	(((c) & 0xff) == ' ')
4446
4447static int
4448skip_spc_right(scr_stat *scp, u_short *p)
4449{
4450    int i;
4451
4452    for (i = (p - scp->scr_buf) % scp->xsize; i < scp->xsize; ++i) {
4453	if (!isspace(*p))
4454	    break;
4455	++p;
4456    }
4457    return i;
4458}
4459
4460static int
4461skip_spc_left(scr_stat *scp, u_short *p)
4462{
4463    int i;
4464
4465    for (i = (p-- - scp->scr_buf) % scp->xsize - 1; i >= 0; --i) {
4466	if (!isspace(*p))
4467	    break;
4468	--p;
4469    }
4470    return i;
4471}
4472
4473static void
4474mouse_cut(scr_stat *scp)
4475{
4476    u_short *end;
4477    u_short *p;
4478    int i = 0;
4479    int j = 0;
4480
4481    scp->mouse_cut_end = (scp->mouse_pos >= scp->mouse_cut_start) ?
4482	scp->mouse_pos + 1 : scp->mouse_pos;
4483    end = (scp->mouse_cut_start > scp->mouse_cut_end) ?
4484	scp->mouse_cut_start : scp->mouse_cut_end;
4485    for (p = (scp->mouse_cut_start > scp->mouse_cut_end) ?
4486	    scp->mouse_cut_end : scp->mouse_cut_start; p < end; ++p) {
4487	cut_buffer[i] = *p & 0xff;
4488	/* remember the position of the last non-space char */
4489	if (!isspace(cut_buffer[i++]))
4490	    j = i;
4491	/* trim trailing blank when crossing lines */
4492	if (((p - scp->scr_buf) % scp->xsize) == (scp->xsize - 1)) {
4493	    cut_buffer[j++] = '\n';
4494	    i = j;
4495	}
4496    }
4497    cut_buffer[i] = '\0';
4498
4499    /* scan towards the end of the last line */
4500    --p;
4501    for (i = (p - scp->scr_buf) % scp->xsize; i < scp->xsize; ++i) {
4502	if (!isspace(*p))
4503	    break;
4504	++p;
4505    }
4506    /* if there is nothing but blank chars, trim them, but mark towards eol */
4507    if (i >= scp->xsize) {
4508	if (scp->mouse_cut_start > scp->mouse_cut_end)
4509	    scp->mouse_cut_start = p;
4510	else
4511	    scp->mouse_cut_end = p;
4512	cut_buffer[j++] = '\n';
4513	cut_buffer[j] = '\0';
4514    }
4515
4516    mark_for_update(scp, scp->mouse_cut_start - scp->scr_buf);
4517    mark_for_update(scp, scp->mouse_cut_end - scp->scr_buf);
4518}
4519
4520static void
4521mouse_cut_start(scr_stat *scp)
4522{
4523    int i;
4524
4525    if (scp->status & MOUSE_VISIBLE) {
4526	if (scp->mouse_pos == scp->mouse_cut_start &&
4527	    scp->mouse_cut_start == scp->mouse_cut_end - 1) {
4528	    cut_buffer[0] = '\0';
4529	    remove_cutmarking(scp);
4530	} else if (skip_spc_right(scp, scp->mouse_pos) >= scp->xsize) {
4531	    /* if the pointer is on trailing blank chars, mark towards eol */
4532	    i = skip_spc_left(scp, scp->mouse_pos) + 1;
4533	    scp->mouse_cut_start = scp->scr_buf +
4534	        ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize + i;
4535	    scp->mouse_cut_end = scp->scr_buf +
4536	        ((scp->mouse_pos - scp->scr_buf) / scp->xsize + 1) * scp->xsize;
4537	    cut_buffer[0] = '\n';
4538	    cut_buffer[1] = '\0';
4539	    scp->status |= MOUSE_CUTTING;
4540	} else {
4541	    scp->mouse_cut_start = scp->mouse_pos;
4542	    scp->mouse_cut_end = scp->mouse_cut_start + 1;
4543	    cut_buffer[0] = *scp->mouse_cut_start & 0xff;
4544	    cut_buffer[1] = '\0';
4545	    scp->status |= MOUSE_CUTTING;
4546	}
4547    	mark_all(scp);
4548	/* delete all other screens cut markings */
4549	for (i=0; i<MAXCONS; i++) {
4550	    if (console[i] == NULL || console[i] == scp)
4551		continue;
4552	    remove_cutmarking(console[i]);
4553	}
4554    }
4555}
4556
4557static void
4558mouse_cut_end(scr_stat *scp)
4559{
4560    if (scp->status & MOUSE_VISIBLE) {
4561	scp->status &= ~MOUSE_CUTTING;
4562    }
4563}
4564
4565static void
4566mouse_cut_word(scr_stat *scp)
4567{
4568    u_short *p;
4569    u_short *sol;
4570    u_short *eol;
4571    int i;
4572
4573    /*
4574     * Because we don't have locale information in the kernel,
4575     * we only distinguish space char and non-space chars.  Punctuation
4576     * chars, symbols and other regular chars are all treated alike.
4577     */
4578    if (scp->status & MOUSE_VISIBLE) {
4579	sol = scp->scr_buf
4580	    + ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize;
4581	eol = sol + scp->xsize;
4582	if (isspace(*scp->mouse_pos)) {
4583	    for (p = scp->mouse_pos; p >= sol; --p)
4584	        if (!isspace(*p))
4585		    break;
4586	    scp->mouse_cut_start = ++p;
4587	    for (p = scp->mouse_pos; p < eol; ++p)
4588	        if (!isspace(*p))
4589		    break;
4590	    scp->mouse_cut_end = p;
4591	} else {
4592	    for (p = scp->mouse_pos; p >= sol; --p)
4593	        if (isspace(*p))
4594		    break;
4595	    scp->mouse_cut_start = ++p;
4596	    for (p = scp->mouse_pos; p < eol; ++p)
4597	        if (isspace(*p))
4598		    break;
4599	    scp->mouse_cut_end = p;
4600	}
4601	for (i = 0, p = scp->mouse_cut_start; p < scp->mouse_cut_end; ++p)
4602	    cut_buffer[i++] = *p & 0xff;
4603	cut_buffer[i] = '\0';
4604	scp->status |= MOUSE_CUTTING;
4605    }
4606}
4607
4608static void
4609mouse_cut_line(scr_stat *scp)
4610{
4611    u_short *p;
4612    int i;
4613
4614    if (scp->status & MOUSE_VISIBLE) {
4615	scp->mouse_cut_start = scp->scr_buf
4616	    + ((scp->mouse_pos - scp->scr_buf) / scp->xsize) * scp->xsize;
4617	scp->mouse_cut_end = scp->mouse_cut_start + scp->xsize;
4618	for (i = 0, p = scp->mouse_cut_start; p < scp->mouse_cut_end; ++p)
4619	    cut_buffer[i++] = *p & 0xff;
4620	cut_buffer[i++] = '\n';
4621	cut_buffer[i] = '\0';
4622	scp->status |= MOUSE_CUTTING;
4623    }
4624}
4625
4626static void
4627mouse_cut_extend(scr_stat *scp)
4628{
4629    if ((scp->status & MOUSE_VISIBLE) && !(scp->status & MOUSE_CUTTING)
4630	&& (scp->mouse_cut_start != NULL)) {
4631	mouse_cut(scp);
4632	scp->status |= MOUSE_CUTTING;
4633    }
4634}
4635
4636static void
4637mouse_paste(scr_stat *scp)
4638{
4639    if (scp->status & MOUSE_VISIBLE) {
4640	struct tty *tp;
4641	u_char *ptr = cut_buffer;
4642
4643	tp = VIRTUAL_TTY(get_scr_num());
4644	while (*ptr)
4645	    (*linesw[tp->t_line].l_rint)(scr_rmap[*ptr++], tp);
4646    }
4647}
4648
4649static void
4650draw_mouse_image(scr_stat *scp)
4651{
4652    caddr_t address;
4653    int i;
4654    char *font_buffer;
4655    u_char buf[PARAM_BUFSIZE];
4656    u_short buffer[32];
4657    u_short xoffset, yoffset;
4658    u_short *crt_pos = Crtat + (scp->mouse_pos - scp->scr_buf);
4659    int font_size = scp->font_size;
4660
4661    if (font_size < 14) {
4662	font_buffer = font_8;
4663	address = (caddr_t)VIDEOMEM + 0x8000;
4664    }
4665    else if (font_size >= 16) {
4666	font_buffer = font_16;
4667	address = (caddr_t)VIDEOMEM;
4668    }
4669    else {
4670	font_buffer = font_14;
4671	address = (caddr_t)VIDEOMEM + 0x4000;
4672    }
4673    xoffset = scp->mouse_xpos % 8;
4674    yoffset = scp->mouse_ypos % font_size;
4675
4676    /* prepare mousepointer char's bitmaps */
4677    bcopy(font_buffer + ((*(scp->mouse_pos) & 0xff) * font_size),
4678	   &scp->mouse_cursor[0], font_size);
4679    bcopy(font_buffer + ((*(scp->mouse_pos+1) & 0xff) * font_size),
4680	   &scp->mouse_cursor[32], font_size);
4681    bcopy(font_buffer + ((*(scp->mouse_pos+scp->xsize) & 0xff) * font_size),
4682	   &scp->mouse_cursor[64], font_size);
4683    bcopy(font_buffer + ((*(scp->mouse_pos+scp->xsize+1) & 0xff) * font_size),
4684	   &scp->mouse_cursor[96], font_size);
4685    for (i=0; i<font_size; i++) {
4686	buffer[i] = scp->mouse_cursor[i]<<8 | scp->mouse_cursor[i+32];
4687	buffer[i+font_size]=scp->mouse_cursor[i+64]<<8|scp->mouse_cursor[i+96];
4688    }
4689
4690    /* now and-or in the mousepointer image */
4691    for (i=0; i<16; i++) {
4692	buffer[i+yoffset] =
4693	    ( buffer[i+yoffset] & ~(mouse_and_mask[i] >> xoffset))
4694	    | (mouse_or_mask[i] >> xoffset);
4695    }
4696    for (i=0; i<font_size; i++) {
4697	scp->mouse_cursor[i] = (buffer[i] & 0xff00) >> 8;
4698	scp->mouse_cursor[i+32] = buffer[i] & 0xff;
4699	scp->mouse_cursor[i+64] = (buffer[i+font_size] & 0xff00) >> 8;
4700	scp->mouse_cursor[i+96] = buffer[i+font_size] & 0xff;
4701    }
4702
4703    scp->mouse_oldpos = scp->mouse_pos;
4704
4705#if 1
4706    /* wait for vertical retrace to avoid jitter on some videocards */
4707    while (!(inb(crtc_addr+6) & 0x08)) /* idle */ ;
4708#endif
4709    set_font_mode(buf);
4710    sc_bcopy(scp->mouse_cursor, (char *)pa_to_va(address) + 0xd0 * 32, 128);
4711    set_normal_mode(buf);
4712    *(crt_pos) = (*(scp->mouse_pos)&0xff00)|0xd0;
4713    *(crt_pos+scp->xsize) = (*(scp->mouse_pos+scp->xsize)&0xff00)|0xd2;
4714    if (scp->mouse_xpos < (scp->xsize-1)*8) {
4715    	*(crt_pos+1) = (*(scp->mouse_pos+1)&0xff00)|0xd1;
4716    	*(crt_pos+scp->xsize+1) = (*(scp->mouse_pos+scp->xsize+1)&0xff00)|0xd3;
4717    }
4718    mark_for_update(scp, scp->mouse_pos - scp->scr_buf);
4719    mark_for_update(scp, scp->mouse_pos + scp->xsize + 1 - scp->scr_buf);
4720}
4721
4722static void
4723remove_mouse_image(scr_stat *scp)
4724{
4725    u_short *crt_pos = Crtat + (scp->mouse_oldpos - scp->scr_buf);
4726
4727    *(crt_pos) = *(scp->mouse_oldpos);
4728    *(crt_pos+1) = *(scp->mouse_oldpos+1);
4729    *(crt_pos+scp->xsize) = *(scp->mouse_oldpos+scp->xsize);
4730    *(crt_pos+scp->xsize+1) = *(scp->mouse_oldpos+scp->xsize+1);
4731    mark_for_update(scp, scp->mouse_oldpos - scp->scr_buf);
4732    mark_for_update(scp, scp->mouse_oldpos + scp->xsize + 1 - scp->scr_buf);
4733}
4734
4735static void
4736draw_cutmarking(scr_stat *scp)
4737{
4738    u_short *ptr;
4739    u_short och, nch;
4740
4741    for (ptr=scp->scr_buf; ptr<=(scp->scr_buf+(scp->xsize*scp->ysize)); ptr++) {
4742	nch = och = *(Crtat + (ptr - scp->scr_buf));
4743	/* are we outside the selected area ? */
4744	if ( ptr < (scp->mouse_cut_start > scp->mouse_cut_end ?
4745	            scp->mouse_cut_end : scp->mouse_cut_start) ||
4746	     ptr >= (scp->mouse_cut_start > scp->mouse_cut_end ?
4747	            scp->mouse_cut_start : scp->mouse_cut_end)) {
4748	    if (ptr != scp->cursor_pos)
4749		nch = (och & 0xff) | (*ptr & 0xff00);
4750	}
4751	else {
4752	    /* are we clear of the cursor image ? */
4753	    if (ptr != scp->cursor_pos)
4754		nch = (och & 0x88ff) | (*ptr & 0x7000)>>4 | (*ptr & 0x0700)<<4;
4755	    else {
4756		if (flags & CHAR_CURSOR)
4757		    nch = (och & 0x88ff)|(*ptr & 0x7000)>>4|(*ptr & 0x0700)<<4;
4758		else
4759		    if (!(flags & BLINK_CURSOR))
4760		        nch = (och & 0xff) | (*ptr & 0xff00);
4761	    }
4762	}
4763	if (nch != och)
4764	    *(Crtat + (ptr - scp->scr_buf)) = nch;
4765    }
4766}
4767
4768static void
4769remove_cutmarking(scr_stat *scp)
4770{
4771    scp->mouse_cut_start = scp->mouse_cut_end = NULL;
4772    scp->status &= ~MOUSE_CUTTING;
4773    mark_all(scp);
4774}
4775
4776static void
4777save_palette(void)
4778{
4779    int i;
4780
4781    outb(PALRADR, 0x00);
4782    for (i=0x00; i<0x300; i++)
4783	palette[i] = inb(PALDATA);
4784    inb(crtc_addr+6);           /* reset flip/flop */
4785}
4786
4787void
4788load_palette(char *palette)
4789{
4790    int i;
4791
4792    outb(PIXMASK, 0xFF);            /* no pixelmask */
4793    outb(PALWADR, 0x00);
4794    for (i=0x00; i<0x300; i++)
4795	 outb(PALDATA, palette[i]);
4796    inb(crtc_addr+6);           /* reset flip/flop */
4797    outb(ATC, 0x20);            /* enable palette */
4798}
4799
4800static void
4801do_bell(scr_stat *scp, int pitch, int duration)
4802{
4803    if (flags & VISUAL_BELL) {
4804	if (blink_in_progress)
4805	    return;
4806	blink_in_progress = 4;
4807	if (scp != cur_console)
4808	    blink_in_progress += 2;
4809	blink_screen(cur_console);
4810    } else {
4811	if (scp != cur_console)
4812	    pitch *= 2;
4813	sysbeep(pitch, duration);
4814    }
4815}
4816
4817static void
4818blink_screen(void *arg)
4819{
4820    scr_stat *scp = arg;
4821
4822    if ((scp->status & UNKNOWN_MODE) || (blink_in_progress <= 1)) {
4823	blink_in_progress = FALSE;
4824    	mark_all(scp);
4825	if (delayed_next_scr)
4826	    switch_scr(scp, delayed_next_scr - 1);
4827    }
4828    else {
4829	if (blink_in_progress & 1)
4830	    fillw(kernel_default.std_color | scr_map[0x20],
4831		  Crtat, scp->xsize * scp->ysize);
4832	else
4833	    fillw(kernel_default.rev_color | scr_map[0x20],
4834		  Crtat, scp->xsize * scp->ysize);
4835	blink_in_progress--;
4836	timeout(blink_screen, scp, hz / 10);
4837    }
4838}
4839
4840#ifdef SC_SPLASH_SCREEN
4841static void
4842toggle_splash_screen(scr_stat *scp)
4843{
4844    static int toggle = 0;
4845    static u_char save_mode;
4846    int s;
4847
4848    if (video_mode_ptr == NULL)
4849	return;
4850
4851    s = splhigh();
4852    if (toggle) {
4853	scp->mode = save_mode;
4854	scp->status &= ~UNKNOWN_MODE;
4855	set_mode(scp);
4856	load_palette(palette);
4857	toggle = 0;
4858    }
4859    else {
4860	save_mode = scp->mode;
4861	scp->mode = M_VGA_CG320;
4862	scp->status |= UNKNOWN_MODE;
4863	set_mode(scp);
4864	/* load image */
4865	toggle = 1;
4866    }
4867    splx(s);
4868}
4869#endif
4870#endif /* NSC */
4871