syscons.c revision 9626
1/*-
2 * Copyright (c) 1992-1995 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *  $Id: syscons.c,v 1.120 1995/07/11 18:34:29 bde Exp $
29 */
30
31#include "sc.h"
32#include "apm.h"
33#if NSC > 0
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/conf.h>
37#include <sys/ioctl.h>
38#include <sys/proc.h>
39#include <sys/user.h>
40#include <sys/tty.h>
41#include <sys/uio.h>
42#include <sys/callout.h>
43#include <sys/kernel.h>
44#include <sys/syslog.h>
45#include <sys/errno.h>
46#include <sys/malloc.h>
47#include <sys/devconf.h>
48
49#include <machine/clock.h>
50#include <machine/console.h>
51#include <machine/psl.h>
52#include <machine/frame.h>
53#include <machine/pc/display.h>
54#include <machine/apm_bios.h>
55
56#include <i386/isa/isa.h>
57#include <i386/isa/isa_device.h>
58#include <i386/isa/timerreg.h>
59#include <i386/isa/kbdtables.h>
60#include <i386/i386/cons.h>
61#include <i386/isa/syscons.h>
62
63#if !defined(MAXCONS)
64#define MAXCONS 16
65#endif
66
67/* this may break on older VGA's but is usefull on real 32 bit systems */
68#define bcopyw  bcopy
69
70static default_attr user_default = {
71    (FG_LIGHTGREY | BG_BLACK) << 8,
72    (FG_BLACK | BG_LIGHTGREY) << 8
73};
74
75static default_attr kernel_default = {
76    (FG_WHITE | BG_BLACK) << 8,
77    (FG_BLACK | BG_LIGHTGREY) << 8
78};
79
80static  scr_stat    	main_console;
81static  scr_stat    	*console[MAXCONS];
82	scr_stat    	*cur_console;
83static  scr_stat    	*new_scp, *old_scp;
84static  term_stat   	kernel_console;
85static  default_attr    *current_default;
86static  char        	init_done = FALSE;
87static  int     	configuration = 0;
88static  char        	switch_in_progress = FALSE;
89static  char        	blink_in_progress = FALSE;
90static  char        	write_in_progress = FALSE;
91	u_int       	crtc_addr = MONO_BASE;
92static  char        	crtc_vga = FALSE;
93static  u_char      	shfts = 0, ctls = 0, alts = 0, agrs = 0, metas = 0;
94static  u_char      	nlkcnt = 0, clkcnt = 0, slkcnt = 0, alkcnt = 0;
95static  char        	*font_8 = NULL, *font_14 = NULL, *font_16 = NULL;
96static  int     	fonts_loaded = 0;
97	char        	palette[3*256];
98static  const u_int     n_fkey_tab = sizeof(fkey_tab) / sizeof(*fkey_tab);
99static  int     	delayed_next_scr = FALSE;
100static  long        	scrn_blank_time = 0;    /* screen saver timeout value */
101	int     	scrn_blanked = FALSE;   /* screen saver active flag */
102static  int     	scrn_saver = 0;    	/* screen saver routine */
103static  long       	scrn_time_stamp;
104	u_char      	scr_map[256];
105static  char        	*video_mode_ptr = NULL;
106#if ASYNCH
107static  u_char      	kbd_reply = 0;
108#endif
109
110static  u_short mouse_and_mask[16] = {
111	0xc000, 0xe000, 0xf000, 0xf800, 0xfc00, 0xfe00, 0xff00, 0xff80,
112	0xfe00, 0x1e00, 0x1f00, 0x0f00, 0x0f00, 0x0000, 0x0000, 0x0000
113};
114static  u_short mouse_or_mask[16] = {
115	0x0000, 0x4000, 0x6000, 0x7000, 0x7800, 0x7c00, 0x7e00, 0x6800,
116	0x0c00, 0x0c00, 0x0600, 0x0600, 0x0000, 0x0000, 0x0000, 0x0000
117};
118
119void    none_saver(int blank) { }
120void    (*current_saver)() = none_saver;
121
122/* OS specific stuff */
123#ifdef not_yet_done
124#define VIRTUAL_TTY(x)  (sccons[x] = ttymalloc(sccons[x]))
125struct  CONSOLE_TTY 	(sccons[MAXCONS] = ttymalloc(sccons[MAXCONS]))
126struct  tty         	*sccons[MAXCONS+1];
127#else
128#define VIRTUAL_TTY(x)  &sccons[x]
129#define CONSOLE_TTY 	&sccons[MAXCONS]
130struct  tty         	sccons[MAXCONS+1];
131int			nsccons = MAXCONS+1;
132#endif
133#define MONO_BUF    	pa_to_va(0xB0000)
134#define CGA_BUF     	pa_to_va(0xB8000)
135u_short         	*Crtat = (u_short *)MONO_BUF;
136
137#define WRAPHIST(scp, pointer, offset)\
138    ((scp->history) + ((((pointer) - (scp->history)) + (scp->history_size)\
139    + (offset)) % (scp->history_size)))
140
141struct  isa_driver scdriver = {
142    scprobe, scattach, "sc", 1
143};
144
145int
146scprobe(struct isa_device *dev)
147{
148    int i, retries = 5;
149    unsigned char val;
150
151    /* Enable interrupts and keyboard controller */
152    kbd_wait();
153    outb(KB_STAT, KB_WRITE);
154    kbd_wait();
155    outb(KB_DATA, KB_MODE);
156
157    /* flush any noise in the buffer */
158    while (inb(KB_STAT) & KB_BUF_FULL) {
159	DELAY(10);
160	(void) inb(KB_DATA);
161    }
162
163    /* Reset keyboard hardware */
164    while (retries--) {
165	kbd_wait();
166	outb(KB_DATA, KB_RESET);
167	for (i=0; i<100000; i++) {
168	    DELAY(10);
169	    val = inb(KB_DATA);
170	    if (val == KB_ACK || val == KB_ECHO)
171		goto gotres;
172	    if (val == KB_RESEND)
173		break;
174	}
175    }
176gotres:
177    if (!retries)
178	printf("scprobe: keyboard won't accept RESET command\n");
179    else {
180gotack:
181	DELAY(10);
182	while ((inb(KB_STAT) & KB_BUF_FULL) == 0) DELAY(10);
183	DELAY(10);
184	val = inb(KB_DATA);
185	if (val == KB_ACK)
186	    goto gotack;
187	if (val != KB_RESET_DONE)
188	    printf("scprobe: keyboard RESET failed %02x\n", val);
189    }
190#ifdef XT_KEYBOARD
191    kbd_wait();
192    outb(KB_DATA, 0xF0);
193    kbd_wait();
194    outb(KB_DATA, 1)
195    kbd_wait();
196#endif /* XT_KEYBOARD */
197    return (IO_KBDSIZE);
198}
199
200static struct kern_devconf kdc_sc[NSC] = {
201    0, 0, 0,        		/* filled in by dev_attach */
202    "sc", 0, { MDDT_ISA, 0, "tty" },
203    isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
204    &kdc_isa0,      		/* parent */
205    0,          		/* parentdata */
206    DC_BUSY,        		/* the console is almost always busy */
207    "Graphics console",
208    DC_CLS_DISPLAY		/* class */
209};
210
211static inline void
212sc_registerdev(struct isa_device *id)
213{
214    if(id->id_unit)
215	kdc_sc[id->id_unit] = kdc_sc[0];
216    kdc_sc[id->id_unit].kdc_unit = id->id_unit;
217    kdc_sc[id->id_unit].kdc_isa = id;
218    dev_attach(&kdc_sc[id->id_unit]);
219}
220
221#if NAPM > 0
222static int
223scresume(void *dummy)
224{
225	shfts = 0;
226	ctls = 0;
227	alts = 0;
228	agrs = 0;
229	metas = 0;
230	return 0;
231}
232#endif
233
234int
235scattach(struct isa_device *dev)
236{
237    scr_stat *scp;
238
239    scinit();
240    configuration = dev->id_flags;
241
242    scp = console[0];
243
244    if (crtc_vga) {
245	font_8 = (char *)malloc(8*256, M_DEVBUF, M_NOWAIT);
246	font_14 = (char *)malloc(14*256, M_DEVBUF, M_NOWAIT);
247	font_16 = (char *)malloc(16*256, M_DEVBUF, M_NOWAIT);
248	copy_font(SAVE, FONT_16, font_16);
249	fonts_loaded = FONT_16;
250	scp->font = FONT_16;
251	save_palette();
252    }
253
254    scp->scr_buf = (u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
255				     M_DEVBUF, M_NOWAIT);
256    /* copy screen to buffer */
257    bcopyw(Crtat, scp->scr_buf, scp->xsize * scp->ysize * sizeof(u_short));
258    scp->cursor_pos = scp->scr_buf + scp->xpos + scp->ypos * scp->xsize;
259    scp->mouse_pos = scp->scr_buf;
260
261    /* initialize history buffer & pointers */
262    scp->history_head = scp->history_pos = scp->history =
263	(u_short *)malloc(scp->history_size*sizeof(u_short),
264			  M_DEVBUF, M_NOWAIT);
265    bzero(scp->history_head, scp->history_size*sizeof(u_short));
266
267    /* initialize cursor stuff */
268    draw_cursor(scp, TRUE);
269    if (crtc_vga && (configuration & CHAR_CURSOR))
270	set_destructive_cursor(scp, TRUE);
271
272    /* get screen update going */
273    scrn_timer();
274
275    update_leds(scp->status);
276    sc_registerdev(dev);
277
278    printf("sc%d: ", dev->id_unit);
279    if (crtc_vga)
280	if (crtc_addr == MONO_BASE)
281	    printf("VGA mono");
282	else
283	    printf("VGA color");
284    else
285	if (crtc_addr == MONO_BASE)
286	    printf("MDA/hercules");
287	else
288	    printf("CGA/EGA");
289    printf(" <%d virtual consoles, flags=0x%x>\n", MAXCONS, configuration);
290
291#if NAPM > 0
292    scp->r_hook.ah_fun = scresume;
293    scp->r_hook.ah_arg = NULL;
294    scp->r_hook.ah_name = "system keyboard";
295    scp->r_hook.ah_order = APM_MID_ORDER;
296    apm_hook_establish(APM_HOOK_RESUME , &scp->r_hook);
297#endif
298    return 0;
299}
300
301struct tty
302*scdevtotty(dev_t dev)
303{
304    int unit = minor(dev);
305
306    if (unit > MAXCONS || unit < 0)
307	return(NULL);
308    if (unit == MAXCONS)
309	return CONSOLE_TTY;
310    return VIRTUAL_TTY(unit);
311}
312
313static scr_stat
314*get_scr_stat(dev_t dev)
315{
316    int unit = minor(dev);
317
318    if (unit > MAXCONS || unit < 0)
319	return(NULL);
320    if (unit == MAXCONS)
321	return console[0];
322    return console[unit];
323}
324
325static int
326get_scr_num()
327{
328    int i = 0;
329
330    while ((i < MAXCONS) && (cur_console != console[i]))
331	i++;
332    return i < MAXCONS ? i : 0;
333}
334
335int
336scopen(dev_t dev, int flag, int mode, struct proc *p)
337{
338    struct tty *tp = scdevtotty(dev);
339
340    if (!tp)
341	return(ENXIO);
342
343    tp->t_oproc = scstart;
344    tp->t_param = scparam;
345    tp->t_dev = dev;
346    if (!(tp->t_state & TS_ISOPEN)) {
347	ttychars(tp);
348	tp->t_iflag = TTYDEF_IFLAG;
349	tp->t_oflag = TTYDEF_OFLAG;
350	tp->t_cflag = TTYDEF_CFLAG;
351	tp->t_lflag = TTYDEF_LFLAG;
352	tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
353	scparam(tp, &tp->t_termios);
354	ttsetwater(tp);
355    }
356    else
357	if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
358	    return(EBUSY);
359    tp->t_state |= TS_CARR_ON;
360    tp->t_cflag |= CLOCAL;
361    if (!console[minor(dev)])
362	console[minor(dev)] = alloc_scp();
363    return((*linesw[tp->t_line].l_open)(dev, tp));
364}
365
366int
367scclose(dev_t dev, int flag, int mode, struct proc *p)
368{
369    struct tty *tp = scdevtotty(dev);
370    struct scr_stat *scp;
371
372    if (!tp)
373	return(ENXIO);
374    if (minor(dev) < MAXCONS) {
375	scp = get_scr_stat(tp->t_dev);
376	if (scp->status & SWITCH_WAIT_ACQ)
377	    wakeup((caddr_t)&scp->smode);
378#if not_yet_done
379	if (scp == &main_console) {
380	    scp->pid = 0;
381	    scp->proc = NULL;
382	    scp->smode.mode = VT_AUTO;
383	}
384	else {
385	    free(scp->scr_buf, M_DEVBUF);
386	    free(scp->history, M_DEVBUF);
387	    free(scp, M_DEVBUF);
388	    console[minor(dev)] = NULL;
389	}
390#else
391	scp->pid = 0;
392	scp->proc = NULL;
393	scp->smode.mode = VT_AUTO;
394#endif
395    }
396    (*linesw[tp->t_line].l_close)(tp, flag);
397    ttyclose(tp);
398    return(0);
399}
400
401int
402scread(dev_t dev, struct uio *uio, int flag)
403{
404    struct tty *tp = scdevtotty(dev);
405
406    if (!tp)
407	return(ENXIO);
408    return((*linesw[tp->t_line].l_read)(tp, uio, flag));
409}
410
411int
412scwrite(dev_t dev, struct uio *uio, int flag)
413{
414    struct tty *tp = scdevtotty(dev);
415
416    if (!tp)
417	return(ENXIO);
418    return((*linesw[tp->t_line].l_write)(tp, uio, flag));
419}
420
421void
422scintr(int unit)
423{
424    static struct tty *cur_tty;
425    int c, len;
426    u_char *cp;
427
428    /* make screensaver happy */
429    scrn_time_stamp = time.tv_sec;
430    if (scrn_blanked) {
431	(*current_saver)(FALSE);
432	cur_console->start = 0;
433	cur_console->end = cur_console->xsize * cur_console->ysize;
434    }
435
436    c = scgetc(1);
437
438    cur_tty = VIRTUAL_TTY(get_scr_num());
439    if (!(cur_tty->t_state & TS_ISOPEN))
440	if (!((cur_tty = CONSOLE_TTY)->t_state & TS_ISOPEN))
441	    return;
442
443    switch (c & 0xff00) {
444    case 0x0000: /* normal key */
445	(*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
446	break;
447    case NOKEY: /* nothing there */
448	break;
449    case FKEY:  /* function key, return string */
450	if (cp = get_fstr((u_int)c, (u_int *)&len)) {
451	    while (len-- >  0)
452		(*linesw[cur_tty->t_line].l_rint)(*cp++ & 0xFF, cur_tty);
453	}
454	break;
455    case MKEY:  /* meta is active, prepend ESC */
456	(*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
457	(*linesw[cur_tty->t_line].l_rint)(c & 0xFF, cur_tty);
458	break;
459    case BKEY:  /* backtab fixed sequence (esc [ Z) */
460	(*linesw[cur_tty->t_line].l_rint)(0x1b, cur_tty);
461	(*linesw[cur_tty->t_line].l_rint)('[', cur_tty);
462	(*linesw[cur_tty->t_line].l_rint)('Z', cur_tty);
463	break;
464    }
465}
466
467int
468scparam(struct tty *tp, struct termios *t)
469{
470    tp->t_ispeed = t->c_ispeed;
471    tp->t_ospeed = t->c_ospeed;
472    tp->t_cflag = t->c_cflag;
473    return 0;
474}
475
476int
477scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
478{
479    int i, error;
480    struct tty *tp;
481    struct trapframe *fp;
482    scr_stat *scp;
483
484    tp = scdevtotty(dev);
485    if (!tp)
486	return ENXIO;
487    scp = get_scr_stat(tp->t_dev);
488
489    switch (cmd) {  		/* process console hardware related ioctl's */
490
491    case GIO_ATTR:      	/* get current attributes */
492	*(int*)data = scp->term.cur_attr;
493	return 0;
494
495    case GIO_COLOR:     	/* is this a color console ? */
496	if (crtc_addr == COLOR_BASE)
497	    *(int*)data = 1;
498	else
499	    *(int*)data = 0;
500	return 0;
501
502    case CONS_CURRENT:  	/* get current adapter type */
503	if (crtc_vga)
504	    *(int*)data = KD_VGA;
505	else
506	    if (crtc_addr == MONO_BASE)
507		*(int*)data = KD_MONO;
508	    else
509		*(int*)data = KD_CGA;
510	return 0;
511
512    case CONS_GET:      	/* get current video mode */
513	*(int*)data = scp->mode;
514	return 0;
515
516    case CONS_BLANKTIME:    	/* set screen saver timeout (0 = no saver) */
517	scrn_blank_time = *(int*)data;
518	return 0;
519
520    case CONS_CURSORTYPE:   	/* set cursor type blink/noblink */
521	if ((*(int*)data) & 0x01)
522	    configuration |= BLINK_CURSOR;
523	else
524	    configuration &= ~BLINK_CURSOR;
525	if ((*(int*)data) & 0x02) {
526	    configuration |= CHAR_CURSOR;
527	    set_destructive_cursor(scp, TRUE);
528	} else
529	    configuration &= ~CHAR_CURSOR;
530	return 0;
531
532    case CONS_BELLTYPE: 	/* set bell type sound/visual */
533	if (*data)
534	    configuration |= VISUAL_BELL;
535	else
536	    configuration &= ~VISUAL_BELL;
537	return 0;
538
539    case CONS_HISTORY:  	/* set history size */
540	if (*data) {
541	    free(scp->history, M_DEVBUF);
542	    scp->history_size = *(int*)data;
543	    if (scp->history_size < scp->ysize)
544		scp->history = NULL;
545	    else {
546		scp->history_size *= scp->xsize;
547		scp->history_head = scp->history_pos = scp->history =
548		    (u_short *)malloc(scp->history_size*sizeof(u_short),
549				      M_DEVBUF, M_NOWAIT);
550		bzero(scp->history_head, scp->history_size*sizeof(u_short));
551	    }
552	    return 0;
553	}
554	else
555	    return EINVAL;
556
557    case CONS_MOUSECTL:		/* control mouse arrow */
558    {
559	mouse_info_t *mouse = (mouse_info_t*)data;
560	int fontsize;
561
562	switch (scp->font) {
563	default:
564	case FONT_8:
565	    fontsize = 8; break;
566	case FONT_14:
567	    fontsize = 14; break;
568	case FONT_16:
569	    fontsize = 16; break;
570	}
571	switch (mouse->operation) {
572	case MOUSE_SHOW:
573	    if (!(scp->status & MOUSE_ENABLED)) {
574		scp->mouse_oldpos = Crtat + (scp->mouse_pos - scp->scr_buf);
575		scp->status |= (UPDATE_MOUSE | MOUSE_ENABLED);
576	    }
577	    else
578		return EINVAL;
579	    break;
580
581	case MOUSE_HIDE:
582	    if (scp->status & MOUSE_ENABLED) {
583		scp->status &= ~MOUSE_ENABLED;
584		scp->status |= UPDATE_MOUSE;
585	    }
586	    else
587		return EINVAL;
588	    break;
589
590	case MOUSE_MOVEABS:
591	    scp->mouse_xpos = mouse->x;
592	    scp->mouse_ypos = mouse->y;
593	    goto set_mouse_pos;
594
595	case MOUSE_MOVEREL:
596	    scp->mouse_xpos += mouse->x;
597	    scp->mouse_ypos += mouse->y;
598set_mouse_pos:
599	    if (scp->mouse_xpos < 0)
600		scp->mouse_xpos = 0;
601	    if (scp->mouse_ypos < 0)
602		scp->mouse_ypos = 0;
603	    if (scp->mouse_xpos >= scp->xsize*8)
604		scp->mouse_xpos = (scp->xsize*8)-1;
605	    if (scp->mouse_ypos >= scp->ysize*fontsize)
606		scp->mouse_ypos = (scp->ysize*fontsize)-1;
607	    scp->mouse_pos = scp->scr_buf +
608		(scp->mouse_ypos/fontsize)*scp->xsize + scp->mouse_xpos/8;
609	    if (scp->status & MOUSE_ENABLED)
610		scp->status |= UPDATE_MOUSE;
611	    break;
612
613	case MOUSE_GETPOS:
614	    mouse->x = scp->mouse_xpos;
615	    mouse->y = scp->mouse_ypos;
616	    return 0;
617
618	default:
619	    return EINVAL;
620	}
621	/* make screensaver happy */
622	if (scp == cur_console) {
623	    scrn_time_stamp = time.tv_sec;
624	    if (scrn_blanked) {
625		(*current_saver)(FALSE);
626		cur_console->start = 0;
627		cur_console->end = cur_console->xsize * cur_console->ysize;
628	    }
629	}
630	return 0;
631    }
632
633    case CONS_GETINFO:  	/* get current (virtual) console info */
634    {
635	vid_info_t *ptr = (vid_info_t*)data;
636	if (ptr->size == sizeof(struct vid_info)) {
637	    ptr->m_num = get_scr_num();
638	    ptr->mv_col = scp->xpos;
639	    ptr->mv_row = scp->ypos;
640	    ptr->mv_csz = scp->xsize;
641	    ptr->mv_rsz = scp->ysize;
642	    ptr->mv_norm.fore = (scp->term.std_attr & 0x0f00)>>8;
643	    ptr->mv_norm.back = (scp->term.std_attr & 0xf000)>>12;
644	    ptr->mv_rev.fore = (scp->term.rev_attr & 0x0f00)>>8;
645	    ptr->mv_rev.back = (scp->term.rev_attr & 0xf000)>>12;
646	    ptr->mv_grfc.fore = 0;      /* not supported */
647	    ptr->mv_grfc.back = 0;      /* not supported */
648	    ptr->mv_ovscan = scp->border;
649	    ptr->mk_keylock = scp->status & LOCK_KEY_MASK;
650	    return 0;
651	}
652	return EINVAL;
653    }
654
655    case CONS_GETVERS:  	/* get version number */
656	*(int*)data = 0x200;    /* version 2.0 */
657	return 0;
658
659    /* VGA TEXT MODES */
660    case SW_VGA_C40x25:
661    case SW_VGA_C80x25: case SW_VGA_M80x25:
662    case SW_VGA_C80x30: case SW_VGA_M80x30:
663    case SW_VGA_C80x50: case SW_VGA_M80x50:
664    case SW_VGA_C80x60: case SW_VGA_M80x60:
665    case SW_B40x25:     case SW_C40x25:
666    case SW_B80x25:     case SW_C80x25:
667    case SW_ENH_B40x25: case SW_ENH_C40x25:
668    case SW_ENH_B80x25: case SW_ENH_C80x25:
669    case SW_ENH_B80x43: case SW_ENH_C80x43:
670
671	if (!crtc_vga || video_mode_ptr == NULL)
672	    return ENXIO;
673	switch (cmd & 0xff) {
674	case M_VGA_C80x60: case M_VGA_M80x60:
675	    if (!(fonts_loaded & FONT_8))
676		return EINVAL;
677	    scp->xsize = 80;
678	    scp->ysize = 60;
679	    break;
680	case M_VGA_C80x50: case M_VGA_M80x50:
681	    if (!(fonts_loaded & FONT_8))
682		return EINVAL;
683	    scp->xsize = 80;
684	    scp->ysize = 50;
685	    break;
686	case M_ENH_B80x43: case M_ENH_C80x43:
687	    if (!(fonts_loaded & FONT_8))
688		return EINVAL;
689	    scp->xsize = 80;
690	    scp->ysize = 43;
691	    break;
692	case M_VGA_C80x30: case M_VGA_M80x30:
693	    scp->xsize = 80;
694	    scp->ysize = 30;
695	    break;
696	default:
697	    if ((cmd & 0xff) > M_VGA_CG320)
698		return EINVAL;
699	    else
700		scp->xsize = *(video_mode_ptr+((cmd&0xff)*64));
701		scp->ysize = *(video_mode_ptr+((cmd&0xff)*64)+1)+1;
702	    break;
703	}
704	scp->mode = cmd & 0xff;
705	scp->status &= ~UNKNOWN_MODE;   /* text mode */
706	free(scp->scr_buf, M_DEVBUF);
707	scp->scr_buf = (u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
708					 M_DEVBUF, M_NOWAIT);
709	if (scp == cur_console)
710	    set_mode(scp);
711	clear_screen(scp);
712	if (tp->t_winsize.ws_col != scp->xsize
713	    || tp->t_winsize.ws_row != scp->ysize) {
714	    tp->t_winsize.ws_col = scp->xsize;
715	    tp->t_winsize.ws_row = scp->ysize;
716	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
717	}
718	return 0;
719
720    /* GRAPHICS MODES */
721    case SW_BG320:     case SW_BG640:
722    case SW_CG320:     case SW_CG320_D:   case SW_CG640_E:
723    case SW_CG640x350: case SW_ENH_CG640:
724    case SW_BG640x480: case SW_CG640x480: case SW_VGA_CG320:
725
726	if (!crtc_vga || video_mode_ptr == NULL)
727	    return ENXIO;
728	scp->mode = cmd & 0xFF;
729	scp->status |= UNKNOWN_MODE;    /* graphics mode */
730	scp->xsize = (*(video_mode_ptr + (scp->mode*64))) * 8;
731	scp->ysize = (*(video_mode_ptr + (scp->mode*64) + 1) + 1) *
732		     (*(video_mode_ptr + (scp->mode*64) + 2));
733	set_mode(scp);
734	/* clear_graphics();*/
735
736	if (tp->t_winsize.ws_xpixel != scp->xsize
737	    || tp->t_winsize.ws_ypixel != scp->ysize) {
738	    tp->t_winsize.ws_xpixel = scp->xsize;
739	    tp->t_winsize.ws_ypixel = scp->ysize;
740	    pgsignal(tp->t_pgrp, SIGWINCH, 1);
741	}
742	return 0;
743
744    case VT_SETMODE:    	/* set screen switcher mode */
745	bcopy(data, &scp->smode, sizeof(struct vt_mode));
746	if (scp->smode.mode == VT_PROCESS) {
747	    scp->proc = p;
748	    scp->pid = scp->proc->p_pid;
749	}
750	return 0;
751
752    case VT_GETMODE:    	/* get screen switcher mode */
753	bcopy(&scp->smode, data, sizeof(struct vt_mode));
754	return 0;
755
756    case VT_RELDISP:    	/* screen switcher ioctl */
757	switch(*data) {
758	case VT_FALSE:  	/* user refuses to release screen, abort */
759	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
760		old_scp->status &= ~SWITCH_WAIT_REL;
761		switch_in_progress = FALSE;
762		return 0;
763	    }
764	    return EINVAL;
765
766	case VT_TRUE:   	/* user has released screen, go on */
767	    if (scp == old_scp && (scp->status & SWITCH_WAIT_REL)) {
768		scp->status &= ~SWITCH_WAIT_REL;
769		exchange_scr();
770		if (new_scp->smode.mode == VT_PROCESS) {
771		    new_scp->status |= SWITCH_WAIT_ACQ;
772		    psignal(new_scp->proc, new_scp->smode.acqsig);
773		}
774		else
775		    switch_in_progress = FALSE;
776		return 0;
777	    }
778	    return EINVAL;
779
780	case VT_ACKACQ: 	/* acquire acknowledged, switch completed */
781	    if (scp == new_scp && (scp->status & SWITCH_WAIT_ACQ)) {
782		scp->status &= ~SWITCH_WAIT_ACQ;
783		switch_in_progress = FALSE;
784		return 0;
785	    }
786	    return EINVAL;
787
788	default:
789	    return EINVAL;
790	}
791	/* NOT REACHED */
792
793    case VT_OPENQRY:    	/* return free virtual console */
794	for (i = 0; i < MAXCONS; i++) {
795	    tp = VIRTUAL_TTY(i);
796	    if (!(tp->t_state & TS_ISOPEN)) {
797		*data = i + 1;
798		return 0;
799	    }
800	}
801	return EINVAL;
802
803    case VT_ACTIVATE:   	/* switch to screen *data */
804	return switch_scr(scp, (*data) - 1);
805
806    case VT_WAITACTIVE: 	/* wait for switch to occur */
807	if (*data > MAXCONS || *data < 0)
808	    return EINVAL;
809	if (minor(dev) == (*data) - 1)
810	    return 0;
811	if (*data == 0) {
812	    if (scp == cur_console)
813		return 0;
814	}
815	else
816	    scp = console[(*data) - 1];
817	while ((error=tsleep((caddr_t)&scp->smode, PZERO|PCATCH,
818			     "waitvt", 0)) == ERESTART) ;
819	return error;
820
821    case VT_GETACTIVE:
822	*data = get_scr_num()+1;
823	return 0;
824
825    case KDENABIO:      	/* allow io operations */
826	fp = (struct trapframe *)p->p_md.md_regs;
827	fp->tf_eflags |= PSL_IOPL;
828	return 0;
829
830    case KDDISABIO:     	/* disallow io operations (default) */
831	fp = (struct trapframe *)p->p_md.md_regs;
832	fp->tf_eflags &= ~PSL_IOPL;
833	return 0;
834
835    case KDSETMODE:     	/* set current mode of this (virtual) console */
836	switch (*data) {
837	case KD_TEXT:   	/* switch to TEXT (known) mode */
838	    /* restore fonts & palette ! */
839	    if (crtc_vga) {
840		if (fonts_loaded & FONT_8)
841		    copy_font(LOAD, FONT_8, font_8);
842		if (fonts_loaded & FONT_14)
843		    copy_font(LOAD, FONT_14, font_14);
844		if (fonts_loaded & FONT_16)
845		    copy_font(LOAD, FONT_16, font_16);
846		if (configuration & CHAR_CURSOR)
847		    set_destructive_cursor(scp, TRUE);
848		load_palette();
849	    }
850	    /* FALL THROUGH */
851
852	case KD_TEXT1:  	/* switch to TEXT (known) mode */
853	    /* no restore fonts & palette */
854	    scp->status &= ~UNKNOWN_MODE;
855	    if (crtc_vga && video_mode_ptr)
856		set_mode(scp);
857	    clear_screen(scp);
858	    return 0;
859
860	case KD_GRAPHICS:	/* switch to GRAPHICS (unknown) mode */
861	    scp->status |= UNKNOWN_MODE;
862	    return 0;
863	default:
864	    return EINVAL;
865	}
866	/* NOT REACHED */
867
868    case KDGETMODE:     	/* get current mode of this (virtual) console */
869	*data = (scp->status & UNKNOWN_MODE) ? KD_GRAPHICS : KD_TEXT;
870	return 0;
871
872    case KDSBORDER:     	/* set border color of this (virtual) console */
873	if (!crtc_vga)
874	    return ENXIO;
875	scp->border = *data;
876	if (scp == cur_console)
877	    set_border(scp->border);
878	return 0;
879
880    case KDSKBSTATE:    	/* set keyboard state (locks) */
881	if (*data >= 0 && *data <= LOCK_KEY_MASK) {
882	    scp->status &= ~LOCK_KEY_MASK;
883	    scp->status |= *data;
884	    if (scp == cur_console)
885		update_leds(scp->status);
886	    return 0;
887	}
888	return EINVAL;
889
890    case KDGKBSTATE:    	/* get keyboard state (locks) */
891	*data = scp->status & LOCK_KEY_MASK;
892	return 0;
893
894    case KDSETRAD:      	/* set keyboard repeat & delay rates */
895	if (*data & 0x80)
896	    return EINVAL;
897	i = spltty();
898	kbd_cmd(KB_SETRAD);
899	kbd_cmd(*data);
900	splx(i);
901	return 0;
902
903    case KDSKBMODE:     	/* set keyboard mode */
904	switch (*data) {
905	case K_RAW: 		/* switch to RAW scancode mode */
906	    scp->status |= KBD_RAW_MODE;
907	    return 0;
908
909	case K_XLATE:   	/* switch to XLT ascii mode */
910	    if (scp == cur_console && scp->status == KBD_RAW_MODE)
911		shfts = ctls = alts = agrs = metas = 0;
912	    scp->status &= ~KBD_RAW_MODE;
913	    return 0;
914	default:
915	    return EINVAL;
916	}
917	/* NOT REACHED */
918
919    case KDGKBMODE:     	/* get keyboard mode */
920	*data = (scp->status & KBD_RAW_MODE) ? K_RAW : K_XLATE;
921	return 0;
922
923    case KDMKTONE:      	/* sound the bell */
924	if (*(int*)data)
925	    do_bell(scp, (*(int*)data)&0xffff,
926		    (((*(int*)data)>>16)&0xffff)*hz/1000);
927	else
928	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
929	return 0;
930
931    case KIOCSOUND:     	/* make tone (*data) hz */
932	if (scp == cur_console) {
933	    if (*(int*)data) {
934		int pitch = TIMER_FREQ/(*(int*)data);
935
936		/* set command for counter 2, 2 byte write */
937		if (acquire_timer2(TIMER_16BIT|TIMER_SQWAVE))
938		    return EBUSY;
939
940		/* set pitch */
941		outb(TIMER_CNTR2, pitch);
942		outb(TIMER_CNTR2, (pitch>>8));
943
944		/* enable counter 2 output to speaker */
945		outb(IO_PPI, inb(IO_PPI) | 3);
946	    }
947	    else {
948		/* disable counter 2 output to speaker */
949		outb(IO_PPI, inb(IO_PPI) & 0xFC);
950		release_timer2();
951	    }
952	}
953	return 0;
954
955    case KDGKBTYPE:     	/* get keyboard type */
956	*data = 0;  		/* type not known (yet) */
957	return 0;
958
959    case KDSETLED:      	/* set keyboard LED status */
960	if (*data >= 0 && *data <= LED_MASK) {
961	    scp->status &= ~LED_MASK;
962	    scp->status |= *data;
963	    if (scp == cur_console)
964		update_leds(scp->status);
965	    return 0;
966	}
967	return EINVAL;
968
969    case KDGETLED:      	/* get keyboard LED status */
970	*data = scp->status & LED_MASK;
971	return 0;
972
973    case GETFKEY:       	/* get functionkey string */
974	if (*(u_short*)data < n_fkey_tab) {
975	    fkeyarg_t *ptr = (fkeyarg_t*)data;
976	    bcopy(&fkey_tab[ptr->keynum].str, ptr->keydef,
977		  fkey_tab[ptr->keynum].len);
978	    ptr->flen = fkey_tab[ptr->keynum].len;
979	    return 0;
980	}
981	else
982	    return EINVAL;
983
984    case SETFKEY:       	/* set functionkey string */
985	if (*(u_short*)data < n_fkey_tab) {
986	    fkeyarg_t *ptr = (fkeyarg_t*)data;
987	    bcopy(ptr->keydef, &fkey_tab[ptr->keynum].str,
988		  min(ptr->flen, MAXFK));
989	    fkey_tab[ptr->keynum].len = min(ptr->flen, MAXFK);
990	    return 0;
991	}
992	else
993	    return EINVAL;
994
995    case GIO_SCRNMAP:   	/* get output translation table */
996	bcopy(&scr_map, data, sizeof(scr_map));
997	return 0;
998
999    case PIO_SCRNMAP:   	/* set output translation table */
1000	bcopy(data, &scr_map, sizeof(scr_map));
1001	return 0;
1002
1003    case GIO_KEYMAP:    	/* get keyboard translation table */
1004	bcopy(&key_map, data, sizeof(key_map));
1005	return 0;
1006
1007    case PIO_KEYMAP:    	/* set keyboard translation table */
1008	bcopy(data, &key_map, sizeof(key_map));
1009	return 0;
1010
1011    case PIO_FONT8x8:   	/* set 8x8 dot font */
1012	if (!crtc_vga)
1013	    return ENXIO;
1014	bcopy(data, font_8, 8*256);
1015	fonts_loaded |= FONT_8;
1016	copy_font(LOAD, FONT_8, font_8);
1017	if (configuration & CHAR_CURSOR)
1018	    set_destructive_cursor(scp, TRUE);
1019	return 0;
1020
1021    case GIO_FONT8x8:   	/* get 8x8 dot font */
1022	if (!crtc_vga)
1023	    return ENXIO;
1024	if (fonts_loaded & FONT_8) {
1025	    bcopy(font_8, data, 8*256);
1026	    return 0;
1027	}
1028	else
1029	    return ENXIO;
1030
1031    case PIO_FONT8x14:  	/* set 8x14 dot font */
1032	if (!crtc_vga)
1033	    return ENXIO;
1034	bcopy(data, font_14, 14*256);
1035	fonts_loaded |= FONT_14;
1036	copy_font(LOAD, FONT_14, font_14);
1037	if (configuration & CHAR_CURSOR)
1038	    set_destructive_cursor(scp, TRUE);
1039	return 0;
1040
1041    case GIO_FONT8x14:  	/* get 8x14 dot font */
1042	if (!crtc_vga)
1043	    return ENXIO;
1044	if (fonts_loaded & FONT_14) {
1045	    bcopy(font_14, data, 14*256);
1046	    return 0;
1047	}
1048	else
1049	    return ENXIO;
1050
1051    case PIO_FONT8x16:  	/* set 8x16 dot font */
1052	if (!crtc_vga)
1053	    return ENXIO;
1054	bcopy(data, font_16, 16*256);
1055	fonts_loaded |= FONT_16;
1056	copy_font(LOAD, FONT_16, font_16);
1057	if (configuration & CHAR_CURSOR)
1058	    set_destructive_cursor(scp, TRUE);
1059	return 0;
1060
1061    case GIO_FONT8x16:  	/* get 8x16 dot font */
1062	if (!crtc_vga)
1063	    return ENXIO;
1064	if (fonts_loaded & FONT_16) {
1065	    bcopy(font_16, data, 16*256);
1066	    return 0;
1067	}
1068	else
1069	    return ENXIO;
1070    default:
1071	break;
1072    }
1073
1074    error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
1075    if (error >= 0)
1076	return(error);
1077    error = ttioctl(tp, cmd, data, flag);
1078    if (error >= 0)
1079	return(error);
1080    return(ENOTTY);
1081}
1082
1083void
1084scstart(struct tty *tp)
1085{
1086    struct clist *rbp;
1087    int i, s, len;
1088    u_char buf[PCBURST];
1089    scr_stat *scp = get_scr_stat(tp->t_dev);
1090
1091    /* XXX who repeats the call when the above flags are cleared? */
1092    if (scp->status & SLKED || blink_in_progress)
1093	return;
1094    s = spltty();
1095    if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) {
1096	tp->t_state |= TS_BUSY;
1097	rbp = &tp->t_outq;
1098	while (rbp->c_cc) {
1099	    len = q_to_b(rbp, buf, PCBURST);
1100	    splx(s);
1101	    ansi_put(scp, buf, len);
1102	    s = spltty();
1103	}
1104	tp->t_state &= ~TS_BUSY;
1105	ttwwakeup(tp);
1106    }
1107    splx(s);
1108}
1109
1110void
1111pccnprobe(struct consdev *cp)
1112{
1113    int maj;
1114
1115    /* locate the major number */
1116    for (maj = 0; maj < nchrdev; maj++)
1117	if ((void*)cdevsw[maj].d_open == (void*)scopen)
1118	    break;
1119
1120    /* initialize required fields */
1121    cp->cn_dev = makedev(maj, MAXCONS);
1122    cp->cn_pri = CN_INTERNAL;
1123}
1124
1125void
1126pccninit(struct consdev *cp)
1127{
1128    scinit();
1129}
1130
1131void
1132pccnputc(dev_t dev, int c)
1133{
1134    u_char buf[1];
1135    scr_stat *scp = console[0];
1136    term_stat save = scp->term;
1137
1138    scp->term = kernel_console;
1139    current_default = &kernel_default;
1140    if (scp->scr_buf == Crtat)
1141	draw_cursor(scp, FALSE);
1142    buf[0] = c;
1143    ansi_put(scp, buf, 1);
1144    kernel_console = scp->term;
1145    current_default = &user_default;
1146    scp->term = save;
1147    if (scp == cur_console /* && scrn_timer not running */) {
1148	if (scp->scr_buf != Crtat && (scp->start <= scp->end)) {
1149	    bcopyw(scp->scr_buf + scp->start, Crtat + scp->start,
1150		   (1 + scp->end - scp->start) * sizeof(u_short));
1151	    scp->start = scp->xsize * scp->ysize;
1152	    scp->end = 0;
1153	    scp->status &= ~CURSOR_SHOWN;
1154	}
1155	draw_cursor(scp, TRUE);
1156    }
1157}
1158
1159int
1160pccngetc(dev_t dev)
1161{
1162    int s = spltty();       /* block scintr while we poll */
1163    int c = scgetc(0);
1164    splx(s);
1165    return(c);
1166}
1167
1168int
1169pccncheckc(dev_t dev)
1170{
1171    return (scgetc(1) & 0xff);
1172}
1173
1174static void
1175scrn_timer()
1176{
1177    static int cursor_blinkrate;
1178    scr_stat *scp = cur_console;
1179
1180    /* should we just return ? */
1181    if ((scp->status&UNKNOWN_MODE) || blink_in_progress || switch_in_progress) {
1182	timeout((timeout_func_t)scrn_timer, 0, hz/10);
1183	return;
1184    }
1185
1186    if (!scrn_blanked) {
1187	/* update screen image */
1188	if (scp->start <= scp->end) {
1189	    bcopyw(scp->scr_buf + scp->start, Crtat + scp->start,
1190		   (1 + scp->end - scp->start) * sizeof(u_short));
1191	    scp->status &= ~CURSOR_SHOWN;
1192	    scp->start = scp->xsize * scp->ysize;
1193	    scp->end = 0;
1194	}
1195	/* update "pseudo" mouse arrow */
1196	if ((scp->status & MOUSE_ENABLED) && (scp->status & UPDATE_MOUSE))
1197	    draw_mouse_image(scp);
1198
1199	/* update cursor image */
1200	if (scp->status & CURSOR_ENABLED)
1201	    draw_cursor(scp,
1202		!(configuration&BLINK_CURSOR) || !(cursor_blinkrate++&0x04));
1203    }
1204    if (scrn_blank_time && (time.tv_sec>scrn_time_stamp+scrn_blank_time))
1205	(*current_saver)(TRUE);
1206    timeout((timeout_func_t)scrn_timer, 0, hz/25);
1207}
1208
1209static void
1210clear_screen(scr_stat *scp)
1211{
1212    move_crsr(scp, 0, 0);
1213    fillw(scp->term.cur_attr | scr_map[0x20], scp->scr_buf,
1214	  scp->xsize * scp->ysize);
1215    mark_all(scp);
1216}
1217
1218static int
1219switch_scr(scr_stat *scp, u_int next_scr)
1220{
1221    if (switch_in_progress && (cur_console->proc != pfind(cur_console->pid)))
1222	switch_in_progress = FALSE;
1223
1224    if (next_scr >= MAXCONS || switch_in_progress ||
1225	(cur_console->smode.mode == VT_AUTO
1226	 && cur_console->status & UNKNOWN_MODE)) {
1227	do_bell(scp, BELL_PITCH, BELL_DURATION);
1228	return EINVAL;
1229    }
1230
1231    /* is the wanted virtual console open ? */
1232    if (next_scr) {
1233	struct tty *tp = VIRTUAL_TTY(next_scr);
1234	if (!(tp->t_state & TS_ISOPEN)) {
1235	    do_bell(scp, BELL_PITCH, BELL_DURATION);
1236	    return EINVAL;
1237	}
1238    }
1239    /* delay switch if actively updating screen */
1240    if (write_in_progress || blink_in_progress) {
1241	delayed_next_scr = next_scr+1;
1242	return 0;
1243    }
1244    switch_in_progress = TRUE;
1245    old_scp = cur_console;
1246    new_scp = console[next_scr];
1247    wakeup((caddr_t)&new_scp->smode);
1248    if (new_scp == old_scp) {
1249	switch_in_progress = FALSE;
1250	delayed_next_scr = FALSE;
1251	return 0;
1252    }
1253
1254    /* has controlling process died? */
1255    if (old_scp->proc && (old_scp->proc != pfind(old_scp->pid)))
1256	old_scp->smode.mode = VT_AUTO;
1257    if (new_scp->proc && (new_scp->proc != pfind(new_scp->pid)))
1258	new_scp->smode.mode = VT_AUTO;
1259
1260    /* check the modes and switch approbiatly */
1261    if (old_scp->smode.mode == VT_PROCESS) {
1262	old_scp->status |= SWITCH_WAIT_REL;
1263	psignal(old_scp->proc, old_scp->smode.relsig);
1264    }
1265    else {
1266	exchange_scr();
1267	if (new_scp->smode.mode == VT_PROCESS) {
1268	    new_scp->status |= SWITCH_WAIT_ACQ;
1269	    psignal(new_scp->proc, new_scp->smode.acqsig);
1270	}
1271	else
1272	    switch_in_progress = FALSE;
1273    }
1274    return 0;
1275}
1276
1277static void
1278exchange_scr(void)
1279{
1280    move_crsr(old_scp, old_scp->xpos, old_scp->ypos);
1281    cur_console = new_scp;
1282    if (old_scp->mode != new_scp->mode || (old_scp->status & UNKNOWN_MODE)){
1283	if (crtc_vga && video_mode_ptr)
1284	    set_mode(new_scp);
1285    }
1286    move_crsr(new_scp, new_scp->xpos, new_scp->ypos);
1287    if ((old_scp->status & UNKNOWN_MODE) && crtc_vga) {
1288	if (fonts_loaded & FONT_8)
1289	    copy_font(LOAD, FONT_8, font_8);
1290	if (fonts_loaded & FONT_14)
1291	    copy_font(LOAD, FONT_14, font_14);
1292	if (fonts_loaded & FONT_16)
1293	    copy_font(LOAD, FONT_16, font_16);
1294	if (configuration & CHAR_CURSOR)
1295	    set_destructive_cursor(new_scp, TRUE);
1296	load_palette();
1297    }
1298    if (old_scp->status & KBD_RAW_MODE || new_scp->status & KBD_RAW_MODE)
1299	shfts = ctls = alts = agrs = metas = 0;
1300    update_leds(new_scp->status);
1301    delayed_next_scr = FALSE;
1302    bcopyw(new_scp->scr_buf, Crtat,
1303	   (new_scp->xsize*new_scp->ysize)*sizeof(u_short));
1304    new_scp->status &= ~CURSOR_SHOWN;
1305}
1306
1307static inline void
1308move_crsr(scr_stat *scp, int x, int y)
1309{
1310    if (x < 0 || y < 0 || x >= scp->xsize || y >= scp->ysize)
1311	return;
1312    scp->xpos = x;
1313    scp->ypos = y;
1314    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1315    scp->cursor_pos = scp->scr_buf + scp->ypos * scp->xsize + scp->xpos;
1316    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1317}
1318
1319static void
1320scan_esc(scr_stat *scp, u_char c)
1321{
1322    static u_char ansi_col[16] =
1323	{0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15};
1324    int i, n;
1325    u_short *src, *dst, count;
1326
1327    if (scp->term.esc == 1) {
1328	switch (c) {
1329
1330	case '[':   /* Start ESC [ sequence */
1331	    scp->term.esc = 2;
1332	    scp->term.last_param = -1;
1333	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
1334		scp->term.param[i] = 1;
1335	    scp->term.num_param = 0;
1336	    return;
1337
1338	case 'M':   /* Move cursor up 1 line, scroll if at top */
1339	    if (scp->ypos > 0)
1340		move_crsr(scp, scp->xpos, scp->ypos - 1);
1341	    else {
1342		bcopyw(scp->scr_buf, scp->scr_buf + scp->xsize,
1343		       (scp->ysize - 1) * scp->xsize * sizeof(u_short));
1344		fillw(scp->term.cur_attr | scr_map[0x20],
1345		      scp->scr_buf, scp->xsize);
1346    		mark_all(scp);
1347	    }
1348	    break;
1349#if notyet
1350	case 'Q':
1351	    scp->term.esc = 4;
1352	    break;
1353#endif
1354	case 'c':   /* Clear screen & home */
1355	    clear_screen(scp);
1356	    break;
1357	}
1358    }
1359    else if (scp->term.esc == 2) {
1360	if (c >= '0' && c <= '9') {
1361	    if (scp->term.num_param < MAX_ESC_PAR) {
1362	    if (scp->term.last_param != scp->term.num_param) {
1363		scp->term.last_param = scp->term.num_param;
1364		scp->term.param[scp->term.num_param] = 0;
1365	    }
1366	    else
1367		scp->term.param[scp->term.num_param] *= 10;
1368	    scp->term.param[scp->term.num_param] += c - '0';
1369	    return;
1370	    }
1371	}
1372	scp->term.num_param = scp->term.last_param + 1;
1373	switch (c) {
1374
1375	case ';':
1376	    if (scp->term.num_param < MAX_ESC_PAR)
1377		return;
1378	    break;
1379
1380	case '=':
1381	    scp->term.esc = 3;
1382	    scp->term.last_param = -1;
1383	    for (i = scp->term.num_param; i < MAX_ESC_PAR; i++)
1384		scp->term.param[i] = 1;
1385	    scp->term.num_param = 0;
1386	    return;
1387
1388	case 'A':   /* up n rows */
1389	    n = scp->term.param[0]; if (n < 1) n = 1;
1390	    move_crsr(scp, scp->xpos, scp->ypos - n);
1391	    break;
1392
1393	case 'B':   /* down n rows */
1394	    n = scp->term.param[0]; if (n < 1) n = 1;
1395	    move_crsr(scp, scp->xpos, scp->ypos + n);
1396	    break;
1397
1398	case 'C':   /* right n columns */
1399	    n = scp->term.param[0]; if (n < 1) n = 1;
1400	    move_crsr(scp, scp->xpos + n, scp->ypos);
1401	    break;
1402
1403	case 'D':   /* left n columns */
1404	    n = scp->term.param[0]; if (n < 1) n = 1;
1405	    move_crsr(scp, scp->xpos - n, scp->ypos);
1406	    break;
1407
1408	case 'E':   /* cursor to start of line n lines down */
1409	    n = scp->term.param[0]; if (n < 1) n = 1;
1410	    move_crsr(scp, 0, scp->ypos + n);
1411	    break;
1412
1413	case 'F':   /* cursor to start of line n lines up */
1414	    n = scp->term.param[0]; if (n < 1) n = 1;
1415	    move_crsr(scp, 0, scp->ypos - n);
1416	    break;
1417
1418	case 'f':   /* Cursor move */
1419	case 'H':
1420	    if (scp->term.num_param == 0)
1421		move_crsr(scp, 0, 0);
1422	    else if (scp->term.num_param == 2)
1423		move_crsr(scp, scp->term.param[1] - 1, scp->term.param[0] - 1);
1424	    break;
1425
1426	case 'J':   /* Clear all or part of display */
1427	    if (scp->term.num_param == 0)
1428		n = 0;
1429	    else
1430		n = scp->term.param[0];
1431	    switch (n) {
1432	    case 0: /* clear form cursor to end of display */
1433		fillw(scp->term.cur_attr | scr_map[0x20],
1434		      scp->cursor_pos,
1435		      scp->scr_buf + scp->xsize * scp->ysize - scp->cursor_pos);
1436    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1437    		mark_for_update(scp, scp->xsize * scp->ysize);
1438		break;
1439	    case 1: /* clear from beginning of display to cursor */
1440		fillw(scp->term.cur_attr | scr_map[0x20],
1441		      scp->scr_buf,
1442		      scp->cursor_pos - scp->scr_buf);
1443    		mark_for_update(scp, 0);
1444    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1445		break;
1446	    case 2: /* clear entire display */
1447		clear_screen(scp);
1448		break;
1449	    }
1450	    break;
1451
1452	case 'K':   /* Clear all or part of line */
1453	    if (scp->term.num_param == 0)
1454		n = 0;
1455	    else
1456		n = scp->term.param[0];
1457	    switch (n) {
1458	    case 0: /* clear form cursor to end of line */
1459		fillw(scp->term.cur_attr | scr_map[0x20],
1460		      scp->cursor_pos,
1461		      scp->xsize - scp->xpos);
1462    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1463    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf +
1464				scp->xsize - scp->xpos);
1465		break;
1466	    case 1: /* clear from beginning of line to cursor */
1467		fillw(scp->term.cur_attr|scr_map[0x20],
1468		      scp->cursor_pos - (scp->xsize - scp->xpos),
1469		      (scp->xsize - scp->xpos) + 1);
1470    		mark_for_update(scp, scp->ypos * scp->xsize);
1471    		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1472		break;
1473	    case 2: /* clear entire line */
1474		fillw(scp->term.cur_attr|scr_map[0x20],
1475		      scp->cursor_pos - (scp->xsize - scp->xpos),
1476		      scp->xsize);
1477    		mark_for_update(scp, scp->ypos * scp->xsize);
1478    		mark_for_update(scp, (scp->ypos + 1) * scp->xsize);
1479		break;
1480	    }
1481	    break;
1482
1483	case 'L':   /* Insert n lines */
1484	    n = scp->term.param[0]; if (n < 1) n = 1;
1485	    if (n > scp->ysize - scp->ypos)
1486		n = scp->ysize - scp->ypos;
1487	    src = scp->scr_buf + scp->ypos * scp->xsize;
1488	    dst = src + n * scp->xsize;
1489	    count = scp->ysize - (scp->ypos + n);
1490	    bcopyw(src, dst, count * scp->xsize * sizeof(u_short));
1491	    fillw(scp->term.cur_attr | scr_map[0x20], src,
1492		  n * scp->xsize);
1493	    mark_for_update(scp, scp->ypos * scp->xsize);
1494	    mark_for_update(scp, scp->xsize * scp->ysize);
1495	    break;
1496
1497	case 'M':   /* Delete n lines */
1498	    n = scp->term.param[0]; if (n < 1) n = 1;
1499	    if (n > scp->ysize - scp->ypos)
1500		n = scp->ysize - scp->ypos;
1501	    dst = scp->scr_buf + scp->ypos * scp->xsize;
1502	    src = dst + n * scp->xsize;
1503	    count = scp->ysize - (scp->ypos + n);
1504	    bcopyw(src, dst, count * scp->xsize * sizeof(u_short));
1505	    src = dst + count * scp->xsize;
1506	    fillw(scp->term.cur_attr | scr_map[0x20], src,
1507		  n * scp->xsize);
1508	    mark_for_update(scp, scp->ypos * scp->xsize);
1509	    mark_for_update(scp, scp->xsize * scp->ysize);
1510	    break;
1511
1512	case 'P':   /* Delete n chars */
1513	    n = scp->term.param[0]; if (n < 1) n = 1;
1514	    if (n > scp->xsize - scp->xpos)
1515		n = scp->xsize - scp->xpos;
1516	    dst = scp->cursor_pos;
1517	    src = dst + n;
1518	    count = scp->xsize - (scp->xpos + n);
1519	    bcopyw(src, dst, count * sizeof(u_short));
1520	    src = dst + count;
1521	    fillw(scp->term.cur_attr | scr_map[0x20], src, n);
1522	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1523	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
1524	    break;
1525
1526	case '@':   /* Insert n chars */
1527	    n = scp->term.param[0]; if (n < 1) n = 1;
1528	    if (n > scp->xsize - scp->xpos)
1529		n = scp->xsize - scp->xpos;
1530	    src = scp->cursor_pos;
1531	    dst = src + n;
1532	    count = scp->xsize - (scp->xpos + n);
1533	    bcopyw(src, dst, count * sizeof(u_short));
1534	    fillw(scp->term.cur_attr | scr_map[0x20], src, n);
1535	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1536	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n + count);
1537	    break;
1538
1539	case 'S':   /* scroll up n lines */
1540	    n = scp->term.param[0]; if (n < 1)  n = 1;
1541	    if (n > scp->ysize)
1542		n = scp->ysize;
1543	    bcopyw(scp->scr_buf + (scp->xsize * n),
1544		   scp->scr_buf,
1545		   scp->xsize * (scp->ysize - n) * sizeof(u_short));
1546	    fillw(scp->term.cur_attr | scr_map[0x20],
1547		  scp->scr_buf + scp->xsize * (scp->ysize - n),
1548		  scp->xsize * n);
1549    	    mark_all(scp);
1550	    break;
1551
1552	case 'T':   /* scroll down n lines */
1553	    n = scp->term.param[0]; if (n < 1)  n = 1;
1554	    if (n > scp->ysize)
1555		n = scp->ysize;
1556	    bcopyw(scp->scr_buf,
1557		  scp->scr_buf + (scp->xsize * n),
1558		  scp->xsize * (scp->ysize - n) *
1559		  sizeof(u_short));
1560	    fillw(scp->term.cur_attr | scr_map[0x20],
1561		  scp->scr_buf, scp->xsize * n);
1562    	    mark_all(scp);
1563	    break;
1564
1565	case 'X':   /* erase n characters in line */
1566	    n = scp->term.param[0]; if (n < 1)  n = 1;
1567	    if (n > scp->xsize - scp->xpos)
1568		n = scp->xsize - scp->xpos;
1569	    fillw(scp->term.cur_attr | scr_map[0x20],
1570		  scp->scr_buf + scp->xpos +
1571		  ((scp->xsize*scp->ypos) * sizeof(u_short)), n);
1572	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1573	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf + n);
1574	    break;
1575
1576	case 'Z':   /* move n tabs backwards */
1577	    n = scp->term.param[0]; if (n < 1)  n = 1;
1578	    if ((i = scp->xpos & 0xf8) == scp->xpos)
1579		i -= 8*n;
1580	    else
1581		i -= 8*(n-1);
1582	    if (i < 0)
1583		i = 0;
1584	    move_crsr(scp, i, scp->ypos);
1585	    break;
1586
1587	case '`':   /* move cursor to column n */
1588	    n = scp->term.param[0]; if (n < 1)  n = 1;
1589	    move_crsr(scp, n - 1, scp->ypos);
1590	    break;
1591
1592	case 'a':   /* move cursor n columns to the right */
1593	    n = scp->term.param[0]; if (n < 1)  n = 1;
1594	    move_crsr(scp, scp->xpos + n, scp->ypos);
1595	    break;
1596
1597	case 'd':   /* move cursor to row n */
1598	    n = scp->term.param[0]; if (n < 1)  n = 1;
1599	    move_crsr(scp, scp->xpos, n - 1);
1600	    break;
1601
1602	case 'e':   /* move cursor n rows down */
1603	    n = scp->term.param[0]; if (n < 1)  n = 1;
1604	    move_crsr(scp, scp->xpos, scp->ypos + n);
1605	    break;
1606
1607	case 'm':   /* change attribute */
1608	    if (scp->term.num_param == 0) {
1609		scp->term.cur_attr = scp->term.std_attr;
1610		break;
1611	    }
1612	    for (i = 0; i < scp->term.num_param; i++) {
1613		switch (n = scp->term.param[i]) {
1614		case 0: /* back to normal */
1615		    scp->term.cur_attr = scp->term.std_attr;
1616		    break;
1617		case 1: /* highlight (bold) */
1618		    scp->term.cur_attr &= 0xFF00;
1619		    scp->term.cur_attr |= 0x0800;
1620		    break;
1621		case 4: /* highlight (underline) */
1622		    scp->term.cur_attr &= 0xFF00;
1623		    scp->term.cur_attr |= 0x0800;
1624		    break;
1625		case 5: /* blink */
1626		    scp->term.cur_attr &= 0xFF00;
1627		    scp->term.cur_attr |= 0x8000;
1628		    break;
1629		case 7: /* reverse video */
1630		    scp->term.cur_attr = scp->term.rev_attr;
1631		    break;
1632		case 30: case 31: /* set fg color */
1633		case 32: case 33: case 34:
1634		case 35: case 36: case 37:
1635		    scp->term.cur_attr =
1636			(scp->term.cur_attr&0xF8FF) | (ansi_col[(n-30)&7]<<8);
1637		    break;
1638		case 40: case 41: /* set bg color */
1639		case 42: case 43: case 44:
1640		case 45: case 46: case 47:
1641		    scp->term.cur_attr =
1642			(scp->term.cur_attr&0x8FFF) | (ansi_col[(n-40)&7]<<12);
1643		    break;
1644		}
1645	    }
1646	    break;
1647
1648	case 'x':
1649	    if (scp->term.num_param == 0)
1650		n = 0;
1651	    else
1652		n = scp->term.param[0];
1653	    switch (n) {
1654	    case 0:     /* reset attributes */
1655		scp->term.cur_attr = scp->term.std_attr =
1656		    current_default->std_attr;
1657		scp->term.rev_attr = current_default->rev_attr;
1658		break;
1659	    case 1:     /* set ansi background */
1660		scp->term.cur_attr = scp->term.std_attr =
1661		    (scp->term.std_attr & 0x0F00) |
1662		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
1663		break;
1664	    case 2:     /* set ansi foreground */
1665		scp->term.cur_attr = scp->term.std_attr =
1666		    (scp->term.std_attr & 0xF000) |
1667		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
1668		break;
1669	    case 3:     /* set ansi attribute directly */
1670		scp->term.cur_attr = scp->term.std_attr =
1671		    (scp->term.param[1]&0xFF)<<8;
1672		break;
1673	    case 5:     /* set ansi reverse video background */
1674		scp->term.rev_attr =
1675		    (scp->term.rev_attr & 0x0F00) |
1676		    (ansi_col[(scp->term.param[1])&0x0F]<<12);
1677		break;
1678	    case 6:     /* set ansi reverse video foreground */
1679		scp->term.rev_attr =
1680		    (scp->term.rev_attr & 0xF000) |
1681		    (ansi_col[(scp->term.param[1])&0x0F]<<8);
1682		break;
1683	    case 7:     /* set ansi reverse video directly */
1684		scp->term.rev_attr =
1685		    (scp->term.param[1]&0xFF)<<8;
1686		break;
1687	    }
1688	    break;
1689
1690	case 'z':   /* switch to (virtual) console n */
1691	    if (scp->term.num_param == 1)
1692		switch_scr(scp, scp->term.param[0]);
1693	    break;
1694	}
1695    }
1696    else if (scp->term.esc == 3) {
1697	if (c >= '0' && c <= '9') {
1698	    if (scp->term.num_param < MAX_ESC_PAR) {
1699	    if (scp->term.last_param != scp->term.num_param) {
1700		scp->term.last_param = scp->term.num_param;
1701		scp->term.param[scp->term.num_param] = 0;
1702	    }
1703	    else
1704		scp->term.param[scp->term.num_param] *= 10;
1705	    scp->term.param[scp->term.num_param] += c - '0';
1706	    return;
1707	    }
1708	}
1709	scp->term.num_param = scp->term.last_param + 1;
1710	switch (c) {
1711
1712	case ';':
1713	    if (scp->term.num_param < MAX_ESC_PAR)
1714		return;
1715	    break;
1716
1717	case 'A':   /* set display border color */
1718	    if (scp->term.num_param == 1)
1719		scp->border=scp->term.param[0] & 0xff;
1720		if (scp == cur_console)
1721		    set_border(scp->border);
1722	    break;
1723
1724	case 'B':   /* set bell pitch and duration */
1725	    if (scp->term.num_param == 2) {
1726		scp->bell_pitch = scp->term.param[0];
1727		scp->bell_duration = scp->term.param[1]*10;
1728	    }
1729	    break;
1730
1731	case 'C':   /* set cursor type & shape */
1732	    if (scp->term.num_param == 1) {
1733		if (scp->term.param[0] & 0x01)
1734		    configuration |= BLINK_CURSOR;
1735		else
1736		    configuration &= ~BLINK_CURSOR;
1737		if (scp->term.param[0] & 0x02) {
1738		    configuration |= CHAR_CURSOR;
1739		    set_destructive_cursor(scp, TRUE);
1740		} else
1741		    configuration &= ~CHAR_CURSOR;
1742	    }
1743	    else if (scp->term.num_param == 2) {
1744		scp->cursor_start = scp->term.param[0] & 0x1F;
1745		scp->cursor_end = scp->term.param[1] & 0x1F;
1746		if (configuration & CHAR_CURSOR)
1747			set_destructive_cursor(scp, TRUE);
1748	    }
1749	    break;
1750
1751	case 'F':   /* set ansi foreground */
1752	    if (scp->term.num_param == 1)
1753		scp->term.cur_attr = scp->term.std_attr =
1754		    (scp->term.std_attr & 0xF000)
1755		    | ((scp->term.param[0] & 0x0F) << 8);
1756	    break;
1757
1758	case 'G':   /* set ansi background */
1759	    if (scp->term.num_param == 1)
1760		scp->term.cur_attr = scp->term.std_attr =
1761		    (scp->term.std_attr & 0x0F00)
1762		    | ((scp->term.param[0] & 0x0F) << 12);
1763	    break;
1764
1765	case 'H':   /* set ansi reverse video foreground */
1766	    if (scp->term.num_param == 1)
1767		scp->term.rev_attr =
1768		    (scp->term.rev_attr & 0xF000)
1769		    | ((scp->term.param[0] & 0x0F) << 8);
1770	    break;
1771
1772	case 'I':   /* set ansi reverse video background */
1773	    if (scp->term.num_param == 1)
1774		scp->term.rev_attr =
1775		    (scp->term.rev_attr & 0x0F00)
1776		    | ((scp->term.param[0] & 0x0F) << 12);
1777	    break;
1778	}
1779    }
1780    scp->term.esc = 0;
1781}
1782
1783static inline void
1784draw_cursor(scr_stat *scp, int show)
1785{
1786    if (show && !(scp->status & CURSOR_SHOWN)) {
1787	u_short cursor_image = *(Crtat + (scp->cursor_pos - scp->scr_buf));
1788
1789	scp->cursor_saveunder = cursor_image;
1790	if (configuration & CHAR_CURSOR) {
1791	    set_destructive_cursor(scp, FALSE);
1792	    cursor_image = (cursor_image & 0xff00) | DEAD_CHAR;
1793	}
1794	else {
1795	    if ((cursor_image & 0x7000) == 0x7000) {
1796		cursor_image &= 0x8fff;
1797		if(!(cursor_image & 0x0700))
1798		    cursor_image |= 0x0700;
1799	    } else {
1800		cursor_image |= 0x7000;
1801		if ((cursor_image & 0x0700) == 0x0700)
1802		    cursor_image &= 0xf0ff;
1803	    }
1804	}
1805	*(Crtat + (scp->cursor_pos - scp->scr_buf)) = cursor_image;
1806	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1807	scp->status |= CURSOR_SHOWN;
1808    }
1809    if (!show && (scp->status & CURSOR_SHOWN)) {
1810	*(Crtat + (scp->cursor_pos - scp->scr_buf)) = scp->cursor_saveunder;
1811	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1812	scp->status &= ~CURSOR_SHOWN;
1813    }
1814}
1815
1816static void
1817ansi_put(scr_stat *scp, u_char *buf, int len)
1818{
1819    u_char *ptr = buf;
1820
1821    if (scp->status & UNKNOWN_MODE)
1822	return;
1823
1824    /* make screensaver happy */
1825    if (scp == cur_console) {
1826	scrn_time_stamp = time.tv_sec;
1827	if (scrn_blanked) {
1828	    (*current_saver)(FALSE);
1829	    cur_console->start = 0;
1830	    cur_console->end = cur_console->xsize * cur_console->ysize;
1831	}
1832    }
1833    write_in_progress++;
1834outloop:
1835    if (scp->term.esc) {
1836	scan_esc(scp, *ptr++);
1837	len--;
1838    }
1839    else if (PRINTABLE(*ptr)) {     /* Print only printables */
1840 	int cnt = len <= (scp->xsize-scp->xpos) ? len : (scp->xsize-scp->xpos);
1841 	u_short cur_attr = scp->term.cur_attr;
1842 	u_short *cursor_pos = scp->cursor_pos;
1843	do {
1844	    /*
1845	     * gcc-2.6.3 generates poor (un)sign extension code.  Casting the
1846	     * pointers in the following to volatile should have no effect,
1847	     * but in fact speeds up this inner loop from 26 to 18 cycles
1848	     * (+ cache misses) on i486's.
1849	     */
1850#define	UCVP(ucp)	((u_char volatile *)(ucp))
1851	    *cursor_pos++ = UCVP(scr_map)[*UCVP(ptr)] | cur_attr;
1852	    ptr++;
1853	    cnt--;
1854	} while (cnt && PRINTABLE(*ptr));
1855	len -= (cursor_pos - scp->cursor_pos);
1856	scp->xpos += (cursor_pos - scp->cursor_pos);
1857	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1858	mark_for_update(scp, cursor_pos - scp->scr_buf);
1859	scp->cursor_pos = cursor_pos;
1860	if (scp->xpos >= scp->xsize) {
1861	    scp->xpos = 0;
1862	    scp->ypos++;
1863	}
1864    }
1865    else  {
1866	switch(*ptr) {
1867	case 0x07:
1868	    do_bell(scp, scp->bell_pitch, scp->bell_duration);
1869	    break;
1870
1871	case 0x08:      /* non-destructive backspace */
1872	    if (scp->cursor_pos > scp->scr_buf) {
1873	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1874		scp->cursor_pos--;
1875	    	mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1876		if (scp->xpos > 0)
1877		    scp->xpos--;
1878		else {
1879		    scp->xpos += scp->xsize - 1;
1880		    scp->ypos--;
1881		}
1882	    }
1883	    break;
1884
1885	case 0x09:  /* non-destructive tab */
1886	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1887	    scp->cursor_pos += (8 - scp->xpos % 8u);
1888	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1889	    if ((scp->xpos += (8 - scp->xpos % 8u)) >= scp->xsize) {
1890	        scp->xpos = 0;
1891	        scp->ypos++;
1892	    }
1893	    break;
1894
1895	case 0x0a:  /* newline, same pos */
1896	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1897	    scp->cursor_pos += scp->xsize;
1898	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1899	    scp->ypos++;
1900	    break;
1901
1902	case 0x0c:  /* form feed, clears screen */
1903	    clear_screen(scp);
1904	    break;
1905
1906	case 0x0d:  /* return, return to pos 0 */
1907	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1908	    scp->cursor_pos -= scp->xpos;
1909	    mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
1910	    scp->xpos = 0;
1911	    break;
1912
1913	case 0x1b:  /* start escape sequence */
1914	    scp->term.esc = 1;
1915	    scp->term.num_param = 0;
1916	    break;
1917	}
1918	ptr++; len--;
1919    }
1920    /* do we have to scroll ?? */
1921    if (scp->cursor_pos >= scp->scr_buf + scp->ysize * scp->xsize) {
1922	if (scp->history) {
1923	    bcopyw(scp->scr_buf, scp->history_head,
1924		   scp->xsize * sizeof(u_short));
1925	    scp->history_head += scp->xsize;
1926	    if (scp->history_head + scp->xsize >
1927		scp->history + scp->history_size)
1928		scp->history_head = scp->history;
1929	}
1930	bcopyw(scp->scr_buf + scp->xsize, scp->scr_buf,
1931	       scp->xsize * (scp->ysize - 1) * sizeof(u_short));
1932	fillw(scp->term.cur_attr | scr_map[0x20],
1933	      scp->scr_buf + scp->xsize * (scp->ysize - 1),
1934	      scp->xsize);
1935	scp->cursor_pos -= scp->xsize;
1936	scp->ypos--;
1937    	mark_all(scp);
1938    }
1939    if (len)
1940	goto outloop;
1941    write_in_progress--;
1942    if (delayed_next_scr)
1943	switch_scr(scp, delayed_next_scr - 1);
1944}
1945
1946static void
1947scinit(void)
1948{
1949    u_short volatile *cp = Crtat + (CGA_BUF-MONO_BUF)/sizeof(u_short), was;
1950    unsigned hw_cursor;
1951    int i;
1952
1953    if (init_done)
1954	return;
1955    init_done = TRUE;
1956    /*
1957     * Crtat initialized to point to MONO buffer, if not present change
1958     * to CGA_BUF offset. ONLY add the difference since locore.s adds
1959     * in the remapped offset at the "right" time
1960     */
1961    was = *cp;
1962    *cp = (u_short) 0xA55A;
1963    if (*cp != 0xA55A)
1964	crtc_addr = MONO_BASE;
1965    else {
1966	*cp = was;
1967	crtc_addr = COLOR_BASE;
1968	Crtat = Crtat + (CGA_BUF-MONO_BUF)/sizeof(u_short);
1969    }
1970
1971    /* extract cursor location */
1972    outb(crtc_addr, 14);
1973    hw_cursor = inb(crtc_addr + 1) << 8;
1974    outb(crtc_addr, 15);
1975    hw_cursor |= inb(crtc_addr + 1);
1976
1977    /* move hardware cursor out of the way */
1978    outb(crtc_addr, 14);
1979    outb(crtc_addr + 1, 0xff);
1980    outb(crtc_addr, 15);
1981    outb(crtc_addr + 1, 0xff);
1982
1983    /* is this a VGA or higher ? */
1984    outb(crtc_addr, 7);
1985    if (inb(crtc_addr) == 7) {
1986	u_long  pa;
1987	u_long  segoff;
1988
1989	crtc_vga = TRUE;
1990	/*
1991	 * Get the BIOS video mode pointer.
1992	 */
1993	segoff = *(u_long *)pa_to_va(0x4a8);
1994	pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
1995	if (ISMAPPED(pa, sizeof(u_long))) {
1996	    segoff = *(u_long *)pa_to_va(pa);
1997	    pa = (((segoff & 0xffff0000) >> 12) + (segoff & 0xffff));
1998	    if (ISMAPPED(pa, 64))
1999		video_mode_ptr = (char *)pa_to_va(pa);
2000	}
2001    }
2002    current_default = &user_default;
2003    console[0] = &main_console;
2004    init_scp(console[0]);
2005    console[0]->scr_buf = console[0]->mouse_pos =  Crtat;
2006    console[0]->cursor_pos = Crtat + hw_cursor;
2007    console[0]->xpos = hw_cursor % COL;
2008    console[0]->ypos = hw_cursor / COL;
2009    cur_console = console[0];
2010    for (i=1; i<MAXCONS; i++)
2011	console[i] = NULL;
2012    kernel_console.esc = 0;
2013    kernel_console.std_attr = kernel_default.std_attr;
2014    kernel_console.rev_attr = kernel_default.rev_attr;
2015    kernel_console.cur_attr = kernel_default.std_attr;
2016    /* initialize mapscrn array to a one to one map */
2017    for (i=0; i<sizeof(scr_map); i++)
2018	scr_map[i] = i;
2019}
2020
2021static scr_stat
2022*alloc_scp()
2023{
2024    scr_stat *scp;
2025
2026    scp = (scr_stat *)malloc(sizeof(scr_stat), M_DEVBUF, M_NOWAIT);
2027    init_scp(scp);
2028    scp->scr_buf = scp->cursor_pos = scp->scr_buf = scp->mouse_pos =
2029	(u_short *)malloc(scp->xsize*scp->ysize*sizeof(u_short),
2030			  M_DEVBUF, M_NOWAIT);
2031    scp->history_head = scp->history_pos = scp->history =
2032	(u_short *)malloc(scp->history_size*sizeof(u_short),
2033			  M_DEVBUF, M_NOWAIT);
2034    bzero(scp->history_head, scp->history_size*sizeof(u_short));
2035    if (crtc_vga && video_mode_ptr)
2036	set_mode(scp);
2037    clear_screen(scp);
2038    return scp;
2039}
2040
2041static void
2042init_scp(scr_stat *scp)
2043{
2044    scp->mode = M_VGA_C80x25;
2045    scp->font = FONT_16;
2046    scp->xsize = COL;
2047    scp->ysize = ROW;
2048    scp->start = COL * ROW;
2049    scp->end = 0;
2050    scp->term.esc = 0;
2051    scp->term.std_attr = current_default->std_attr;
2052    scp->term.rev_attr = current_default->rev_attr;
2053    scp->term.cur_attr = scp->term.std_attr;
2054    scp->border = BG_BLACK;
2055    scp->cursor_start = *(char *)pa_to_va(0x461);
2056    scp->cursor_end = *(char *)pa_to_va(0x460);
2057    scp->mouse_xpos = scp->mouse_ypos = 0;
2058    scp->bell_pitch = BELL_PITCH;
2059    scp->bell_duration = BELL_DURATION;
2060    scp->status = (*(char *)pa_to_va(0x417) & 0x20) ? NLKED : 0;
2061    scp->status |= CURSOR_ENABLED;
2062    scp->pid = 0;
2063    scp->proc = NULL;
2064    scp->smode.mode = VT_AUTO;
2065    scp->history_head = scp->history_pos = scp->history = NULL;
2066    scp->history_size = HISTORY_SIZE;
2067}
2068
2069static u_char
2070*get_fstr(u_int c, u_int *len)
2071{
2072    u_int i;
2073
2074    if (!(c & FKEY))
2075	return(NULL);
2076    i = (c & 0xFF) - F_FN;
2077    if (i > n_fkey_tab)
2078	return(NULL);
2079    *len = fkey_tab[i].len;
2080    return(fkey_tab[i].str);
2081}
2082
2083static void
2084update_leds(int which)
2085{
2086    int s;
2087    static u_char xlate_leds[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
2088
2089    /* replace CAPS led with ALTGR led for ALTGR keyboards */
2090    if (key_map.n_keys > ALTGR_OFFSET) {
2091	if (which & ALKED)
2092	    which |= CLKED;
2093	else
2094	    which &= ~CLKED;
2095    }
2096    s = spltty();
2097    kbd_cmd(KB_SETLEDS);
2098    kbd_cmd(xlate_leds[which & LED_MASK]);
2099    splx(s);
2100}
2101
2102static void
2103history_to_screen(scr_stat *scp)
2104{
2105    int i;
2106
2107    for (i=0; i<scp->ysize; i++)
2108	bcopyw(scp->history + (((scp->history_pos - scp->history) +
2109	       scp->history_size-((i+1)*scp->xsize))%scp->history_size),
2110	       scp->scr_buf + (scp->xsize * (scp->ysize-1 - i)),
2111	       scp->xsize * sizeof(u_short));
2112    mark_all(scp);
2113}
2114
2115static int
2116history_up_line(scr_stat *scp)
2117{
2118    if (WRAPHIST(scp, scp->history_pos, -(scp->xsize*scp->ysize)) !=
2119	scp->history_head) {
2120	scp->history_pos = WRAPHIST(scp, scp->history_pos, -scp->xsize);
2121	history_to_screen(scp);
2122	return 0;
2123    }
2124    else
2125	return -1;
2126}
2127
2128static int
2129history_down_line(scr_stat *scp)
2130{
2131    if (scp->history_pos != scp->history_head) {
2132	scp->history_pos = WRAPHIST(scp, scp->history_pos, scp->xsize);
2133	history_to_screen(scp);
2134	return 0;
2135    }
2136    else
2137	return -1;
2138}
2139
2140/*
2141 * scgetc(noblock) - get character from keyboard.
2142 * If noblock = 0 wait until a key is pressed.
2143 * Else return NOKEY.
2144 */
2145u_int
2146scgetc(int noblock)
2147{
2148    u_char scancode, keycode;
2149    u_int state, action;
2150    struct key_t *key;
2151    static u_char esc_flag = 0, compose = 0;
2152    static u_int chr = 0;
2153
2154next_code:
2155    kbd_wait();
2156    /* First see if there is something in the keyboard port */
2157    if (inb(KB_STAT) & KB_BUF_FULL)
2158	scancode = inb(KB_DATA);
2159    else if (noblock)
2160	return(NOKEY);
2161    else
2162	goto next_code;
2163
2164    if (cur_console->status & KBD_RAW_MODE)
2165	return scancode;
2166#if ASYNCH
2167    if (scancode == KB_ACK || scancode == KB_RESEND) {
2168	kbd_reply = scancode;
2169	if (noblock)
2170	    return(NOKEY);
2171	goto next_code;
2172    }
2173#endif
2174    keycode = scancode & 0x7F;
2175    switch (esc_flag) {
2176    case 0x00:      /* normal scancode */
2177	switch(scancode) {
2178	case 0xB8:  /* left alt  (compose key) */
2179	    if (compose) {
2180		compose = 0;
2181		if (chr > 255) {
2182		    do_bell(cur_console,
2183			BELL_PITCH, BELL_DURATION);
2184		    chr = 0;
2185		}
2186	    }
2187	    break;
2188	case 0x38:
2189	    if (!compose) {
2190		compose = 1;
2191		chr = 0;
2192	    }
2193	    break;
2194	case 0xE0:
2195	case 0xE1:
2196	    esc_flag = scancode;
2197	    goto next_code;
2198	}
2199	break;
2200    case 0xE0:      /* 0xE0 prefix */
2201	esc_flag = 0;
2202	switch (keycode) {
2203	case 0x1C:  /* right enter key */
2204	    keycode = 0x59;
2205	    break;
2206	case 0x1D:  /* right ctrl key */
2207	    keycode = 0x5A;
2208	    break;
2209	case 0x35:  /* keypad divide key */
2210	    keycode = 0x5B;
2211	    break;
2212	case 0x37:  /* print scrn key */
2213	    keycode = 0x5C;
2214	    break;
2215	case 0x38:  /* right alt key (alt gr) */
2216	    keycode = 0x5D;
2217	    break;
2218	case 0x47:  /* grey home key */
2219	    keycode = 0x5E;
2220	    break;
2221	case 0x48:  /* grey up arrow key */
2222	    keycode = 0x5F;
2223	    break;
2224	case 0x49:  /* grey page up key */
2225	    keycode = 0x60;
2226	    break;
2227	case 0x4B:  /* grey left arrow key */
2228	    keycode = 0x61;
2229	    break;
2230	case 0x4D:  /* grey right arrow key */
2231	    keycode = 0x62;
2232	    break;
2233	case 0x4F:  /* grey end key */
2234	    keycode = 0x63;
2235	    break;
2236	case 0x50:  /* grey down arrow key */
2237	    keycode = 0x64;
2238	    break;
2239	case 0x51:  /* grey page down key */
2240	    keycode = 0x65;
2241	    break;
2242	case 0x52:  /* grey insert key */
2243	    keycode = 0x66;
2244	    break;
2245	case 0x53:  /* grey delete key */
2246	    keycode = 0x67;
2247	    break;
2248
2249	/* the following 3 are only used on the MS "Natural" keyboard */
2250	case 0x5b:  /* left Window key */
2251	    keycode = 0x69;
2252	    break;
2253	case 0x5c:  /* right Window key */
2254	    keycode = 0x6a;
2255	    break;
2256	case 0x5d:  /* menu key */
2257	    keycode = 0x6b;
2258	    break;
2259	default:    /* ignore everything else */
2260	    goto next_code;
2261	}
2262	break;
2263    case 0xE1:      /* 0xE1 prefix */
2264	esc_flag = 0;
2265	if (keycode == 0x1D)
2266	    esc_flag = 0x1D;
2267	goto next_code;
2268	/* NOT REACHED */
2269    case 0x1D:      /* pause / break */
2270	esc_flag = 0;
2271	if (keycode != 0x45)
2272	    goto next_code;
2273	keycode = 0x68;
2274	break;
2275    }
2276
2277    /* if scroll-lock pressed allow history browsing */
2278    if (cur_console->history && cur_console->status & SLKED) {
2279	int i;
2280
2281	cur_console->status &= ~CURSOR_ENABLED;
2282	if (!(cur_console->status & BUFFER_SAVED)) {
2283	    cur_console->status |= BUFFER_SAVED;
2284	    cur_console->history_save = cur_console->history_head;
2285
2286	    /* copy screen into top of history buffer */
2287	    for (i=0; i<cur_console->ysize; i++) {
2288		bcopyw(cur_console->scr_buf + (cur_console->xsize * i),
2289		       cur_console->history_head,
2290		       cur_console->xsize * sizeof(u_short));
2291		cur_console->history_head += cur_console->xsize;
2292		if (cur_console->history_head + cur_console->xsize >
2293		    cur_console->history + cur_console->history_size)
2294		    cur_console->history_head=cur_console->history;
2295	    }
2296	    cur_console->history_pos = cur_console->history_head;
2297	    history_to_screen(cur_console);
2298	}
2299	switch (scancode) {
2300	case 0x47:  /* home key */
2301	    cur_console->history_pos = cur_console->history_head;
2302	    history_to_screen(cur_console);
2303	    goto next_code;
2304
2305	case 0x4F:  /* end key */
2306	    cur_console->history_pos =
2307		WRAPHIST(cur_console, cur_console->history_head,
2308			 cur_console->xsize*cur_console->ysize);
2309	    history_to_screen(cur_console);
2310	    goto next_code;
2311
2312	case 0x48:  /* up arrow key */
2313	    if (history_up_line(cur_console))
2314		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2315	    goto next_code;
2316
2317	case 0x50:  /* down arrow key */
2318	    if (history_down_line(cur_console))
2319		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2320	    goto next_code;
2321
2322	case 0x49:  /* page up key */
2323	    for (i=0; i<cur_console->ysize; i++)
2324	    if (history_up_line(cur_console)) {
2325		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2326		break;
2327	    }
2328	    goto next_code;
2329
2330	case 0x51:  /* page down key */
2331	    for (i=0; i<cur_console->ysize; i++)
2332	    if (history_down_line(cur_console)) {
2333		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2334		break;
2335	    }
2336	    goto next_code;
2337	}
2338    }
2339
2340    if (compose) {
2341	switch (scancode) {
2342	/* key pressed process it */
2343	case 0x47: case 0x48: case 0x49:    /* keypad 7,8,9 */
2344	    chr = (scancode - 0x40) + chr*10;
2345	    goto next_code;
2346	case 0x4B: case 0x4C: case 0x4D:    /* keypad 4,5,6 */
2347	    chr = (scancode - 0x47) + chr*10;
2348	    goto next_code;
2349	case 0x4F: case 0x50: case 0x51:    /* keypad 1,2,3 */
2350	    chr = (scancode - 0x4E) + chr*10;
2351	    goto next_code;
2352	case 0x52:              /* keypad 0 */
2353	    chr *= 10;
2354	    goto next_code;
2355
2356	/* key release, no interest here */
2357	case 0xC7: case 0xC8: case 0xC9:    /* keypad 7,8,9 */
2358	case 0xCB: case 0xCC: case 0xCD:    /* keypad 4,5,6 */
2359	case 0xCF: case 0xD0: case 0xD1:    /* keypad 1,2,3 */
2360	case 0xD2:              /* keypad 0 */
2361	    goto next_code;
2362
2363	case 0x38:              /* left alt key */
2364	    break;
2365	default:
2366	    if (chr) {
2367		compose = chr = 0;
2368		do_bell(cur_console, BELL_PITCH, BELL_DURATION);
2369		goto next_code;
2370	    }
2371	    break;
2372	}
2373    }
2374
2375    state = (shfts ? 1 : 0 ) | (2 * (ctls ? 1 : 0)) | (4 * (alts ? 1 : 0));
2376    if ((!agrs && (cur_console->status & ALKED))
2377	|| (agrs && !(cur_console->status & ALKED)))
2378	keycode += ALTGR_OFFSET;
2379    key = &key_map.key[keycode];
2380    if ( ((key->flgs & FLAG_LOCK_C) && (cur_console->status & CLKED))
2381	 || ((key->flgs & FLAG_LOCK_N) && (cur_console->status & NLKED)) )
2382	state ^= 1;
2383
2384    /* Check for make/break */
2385    action = key->map[state];
2386    if (scancode & 0x80) {      /* key released */
2387	if (key->spcl & 0x80) {
2388	    switch (action) {
2389	    case LSH:
2390		shfts &= ~1;
2391		break;
2392	    case RSH:
2393		shfts &= ~2;
2394		break;
2395	    case LCTR:
2396		ctls &= ~1;
2397		break;
2398	    case RCTR:
2399		ctls &= ~2;
2400		break;
2401	    case LALT:
2402		alts &= ~1;
2403		break;
2404	    case RALT:
2405		alts &= ~2;
2406		break;
2407	    case NLK:
2408		nlkcnt = 0;
2409		break;
2410	    case CLK:
2411		clkcnt = 0;
2412		break;
2413	    case SLK:
2414		slkcnt = 0;
2415		break;
2416	    case ASH:
2417		agrs = 0;
2418		break;
2419	    case ALK:
2420		alkcnt = 0;
2421		break;
2422	    case META:
2423		metas = 0;
2424		break;
2425	    }
2426	}
2427	if (chr && !compose) {
2428	    action = chr;
2429	    chr = 0;
2430	    return(action);
2431	}
2432    } else {
2433	/* key pressed */
2434	if (key->spcl & (0x80>>state)) {
2435	    switch (action) {
2436	    /* LOCKING KEYS */
2437	    case NLK:
2438		if (!nlkcnt) {
2439		    nlkcnt++;
2440		    if (cur_console->status & NLKED)
2441			cur_console->status &= ~NLKED;
2442		    else
2443			cur_console->status |= NLKED;
2444		    update_leds(cur_console->status);
2445		}
2446		break;
2447	    case CLK:
2448		if (!clkcnt) {
2449		    clkcnt++;
2450		    if (cur_console->status & CLKED)
2451			cur_console->status &= ~CLKED;
2452		    else
2453			cur_console->status |= CLKED;
2454		    update_leds(cur_console->status);
2455		}
2456		break;
2457	    case SLK:
2458		if (!slkcnt) {
2459		    slkcnt++;
2460		    if (cur_console->status & SLKED) {
2461			cur_console->status &= ~SLKED;
2462			if (cur_console->status & BUFFER_SAVED){
2463			    int i;
2464			    u_short *ptr = cur_console->history_save;
2465
2466			    for (i=0; i<cur_console->ysize; i++) {
2467				bcopyw(ptr,
2468				       cur_console->scr_buf +
2469				       (cur_console->xsize*i),
2470				       cur_console->xsize * sizeof(u_short));
2471				ptr += cur_console->xsize;
2472				if (ptr + cur_console->xsize >
2473				    cur_console->history +
2474				    cur_console->history_size)
2475				    ptr = cur_console->history;
2476			    }
2477			    cur_console->status &= ~BUFFER_SAVED;
2478			    cur_console->history_head=cur_console->history_save;
2479			    cur_console->status |= CURSOR_ENABLED;
2480			    mark_all(cur_console);
2481			}
2482			scstart(VIRTUAL_TTY(get_scr_num()));
2483		    }
2484		    else
2485			cur_console->status |= SLKED;
2486		    update_leds(cur_console->status);
2487		}
2488		break;
2489	    case ALK:
2490		if (!alkcnt) {
2491		    alkcnt++;
2492		    if (cur_console->status & ALKED)
2493			cur_console->status &= ~ALKED;
2494		    else
2495			cur_console->status |= ALKED;
2496		    update_leds(cur_console->status);
2497		}
2498		break;
2499
2500	    /* NON-LOCKING KEYS */
2501	    case NOP:
2502		break;
2503	    case RBT:
2504		shutdown_nice();
2505		break;
2506	    case SUSP:
2507#if NAPM > 0
2508		apm_suspend();
2509#endif
2510		break;
2511
2512	    case DBG:
2513#ifdef DDB          /* try to switch to console 0 */
2514		if (cur_console->smode.mode == VT_AUTO &&
2515		    console[0]->smode.mode == VT_AUTO)
2516		    switch_scr(cur_console, 0);
2517		Debugger("manual escape to debugger");
2518		return(NOKEY);
2519#else
2520		printf("No debugger in kernel\n");
2521#endif
2522		break;
2523	    case LSH:
2524		shfts |= 1;
2525		break;
2526	    case RSH:
2527		shfts |= 2;
2528		break;
2529	    case LCTR:
2530		ctls |= 1;
2531		break;
2532	    case RCTR:
2533		ctls |= 2;
2534		break;
2535	    case LALT:
2536		alts |= 1;
2537		break;
2538	    case RALT:
2539		alts |= 2;
2540		break;
2541	    case ASH:
2542		agrs = 1;
2543		break;
2544	    case META:
2545		metas = 1;
2546		break;
2547	    case NEXT:
2548		switch_scr(cur_console, (get_scr_num() + 1) % MAXCONS);
2549		break;
2550	    case BTAB:
2551		return(BKEY);
2552	    default:
2553		if (action >= F_SCR && action <= L_SCR) {
2554		    switch_scr(cur_console, action - F_SCR);
2555		    break;
2556		}
2557		if (action >= F_FN && action <= L_FN)
2558		    action |= FKEY;
2559		return(action);
2560	    }
2561	}
2562	else {
2563	    if (metas)
2564		action |= MKEY;
2565	    return(action);
2566	}
2567    }
2568    goto next_code;
2569}
2570
2571int
2572scmmap(dev_t dev, int offset, int nprot)
2573{
2574    if (offset > 0x20000 - PAGE_SIZE)
2575	return -1;
2576    return i386_btop((VIDEOMEM + offset));
2577}
2578
2579static void
2580kbd_wait(void)
2581{
2582    int i = 1000;
2583
2584    while (i--) {
2585	if ((inb(KB_STAT) & KB_READY) == 0)
2586	    break;
2587	DELAY (10);
2588    }
2589}
2590
2591static void
2592kbd_cmd(u_char command)
2593{
2594    int retry = 5;
2595    do {
2596	int i = 100000;
2597
2598	kbd_wait();
2599#if ASYNCH
2600	kbd_reply = 0;
2601	outb(KB_DATA, command);
2602	while (i--) {
2603	    if (kbd_reply == KB_ACK)
2604		return;
2605	    if (kbd_reply == KB_RESEND)
2606		break;
2607	}
2608#else
2609	outb(KB_DATA, command);
2610	while (i--) {
2611	    if (inb(KB_STAT) & KB_BUF_FULL) {
2612		int val;
2613		DELAY(10);
2614		val = inb(KB_DATA);
2615		if (val == KB_ACK)
2616		    return;
2617		if (val == KB_RESEND)
2618		    break;
2619	    }
2620	}
2621#endif
2622    } while (retry--);
2623}
2624
2625static void
2626set_mode(scr_stat *scp)
2627{
2628    char *modetable;
2629    char special_modetable[64];
2630    int mode, font_size;
2631
2632    if (scp != cur_console)
2633	return;
2634
2635    /* setup video hardware for the given mode */
2636    switch (scp->mode) {
2637    case M_VGA_M80x60:
2638	bcopyw(video_mode_ptr+(64*M_VGA_M80x25),&special_modetable, 64);
2639	goto special_80x60;
2640
2641    case M_VGA_C80x60:
2642	bcopyw(video_mode_ptr+(64*M_VGA_C80x25),&special_modetable, 64);
2643special_80x60:
2644	special_modetable[2]  = 0x08;
2645	special_modetable[19] = 0x47;
2646	goto special_480l;
2647
2648    case M_VGA_M80x30:
2649	bcopyw(video_mode_ptr+(64*M_VGA_M80x25),&special_modetable, 64);
2650	goto special_80x30;
2651
2652    case M_VGA_C80x30:
2653	bcopyw(video_mode_ptr+(64*M_VGA_C80x25),&special_modetable, 64);
2654special_80x30:
2655	special_modetable[19] = 0x4f;
2656special_480l:
2657	special_modetable[9] |= 0xc0;
2658	special_modetable[16] = 0x08;
2659	special_modetable[17] = 0x3e;
2660	special_modetable[26] = 0xea;
2661	special_modetable[28] = 0xdf;
2662	special_modetable[31] = 0xe7;
2663	special_modetable[32] = 0x04;
2664	modetable = special_modetable;
2665	goto setup_mode;
2666
2667    case M_ENH_B80x43:
2668	bcopyw(video_mode_ptr+(64*M_ENH_B80x25),&special_modetable, 64);
2669	goto special_80x43;
2670
2671    case M_ENH_C80x43:
2672	bcopyw(video_mode_ptr+(64*M_ENH_C80x25),&special_modetable, 64);
2673special_80x43:
2674	special_modetable[28] = 87;
2675	goto special_80x50;
2676
2677    case M_VGA_M80x50:
2678	bcopyw(video_mode_ptr+(64*M_VGA_M80x25),&special_modetable, 64);
2679	goto special_80x50;
2680
2681    case M_VGA_C80x50:
2682	bcopyw(video_mode_ptr+(64*M_VGA_C80x25),&special_modetable, 64);
2683special_80x50:
2684	special_modetable[2] = 8;
2685	special_modetable[19] = 7;
2686	modetable = special_modetable;
2687	goto setup_mode;
2688
2689    case M_VGA_C40x25: case M_VGA_C80x25:
2690    case M_VGA_M80x25:
2691    case M_B40x25:     case M_C40x25:
2692    case M_B80x25:     case M_C80x25:
2693    case M_ENH_B40x25: case M_ENH_C40x25:
2694    case M_ENH_B80x25: case M_ENH_C80x25:
2695
2696	modetable = video_mode_ptr + (scp->mode * 64);
2697setup_mode:
2698	set_vgaregs(modetable);
2699	font_size = *(modetable + 2);
2700
2701	/* set font type (size) */
2702	switch (font_size) {
2703	case 0x10:
2704	    outb(TSIDX, 0x03); outb(TSREG, 0x00);   /* font 0 */
2705	    scp->font = FONT_16;
2706	    break;
2707	case 0x0E:
2708	    outb(TSIDX, 0x03); outb(TSREG, 0x05);   /* font 1 */
2709	    scp->font = FONT_14;
2710	    break;
2711	default:
2712	case 0x08:
2713	    outb(TSIDX, 0x03); outb(TSREG, 0x0A);   /* font 2 */
2714	    scp->font = FONT_8;
2715	    break;
2716	}
2717	if (configuration & CHAR_CURSOR)
2718	    set_destructive_cursor(scp, TRUE);
2719	break;
2720
2721    case M_BG320:     case M_CG320:     case M_BG640:
2722    case M_CG320_D:   case M_CG640_E:
2723    case M_CG640x350: case M_ENH_CG640:
2724    case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
2725
2726	set_vgaregs(video_mode_ptr + (scp->mode * 64));
2727	break;
2728
2729    default:
2730	/* call user defined function XXX */
2731	break;
2732    }
2733
2734    /* set border color for this (virtual) console */
2735    set_border(scp->border);
2736    return;
2737}
2738
2739void
2740set_border(int color)
2741{
2742    inb(crtc_addr+6);               /* reset flip-flop */
2743    outb(ATC, 0x11); outb(ATC, color);
2744    inb(crtc_addr+6);               /* reset flip-flop */
2745    outb(ATC, 0x20);                /* enable Palette */
2746}
2747
2748static void
2749set_vgaregs(char *modetable)
2750{
2751    int i, s = splhigh();
2752
2753    outb(TSIDX, 0x00); outb(TSREG, 0x01);   	/* stop sequencer */
2754    outb(TSIDX, 0x07); outb(TSREG, 0x00);   	/* unlock registers */
2755    for (i=0; i<4; i++) {           		/* program sequencer */
2756	outb(TSIDX, i+1);
2757	outb(TSREG, modetable[i+5]);
2758    }
2759    outb(MISC, modetable[9]);       		/* set dot-clock */
2760    outb(TSIDX, 0x00); outb(TSREG, 0x03);   	/* start sequencer */
2761    outb(crtc_addr, 0x11);
2762    outb(crtc_addr+1, inb(crtc_addr+1) & 0x7F);
2763    for (i=0; i<25; i++) {          		/* program crtc */
2764	outb(crtc_addr, i);
2765	if (i == 14 || i == 15)     		/* no hardware cursor */
2766	    outb(crtc_addr+1, 0xff);
2767	else
2768	    outb(crtc_addr+1, modetable[i+10]);
2769    }
2770    inb(crtc_addr+6);           		/* reset flip-flop */
2771    for (i=0; i<20; i++) {          		/* program attribute ctrl */
2772	outb(ATC, i);
2773	outb(ATC, modetable[i+35]);
2774    }
2775    for (i=0; i<9; i++) {           		/* program graph data ctrl */
2776	outb(GDCIDX, i);
2777	outb(GDCREG, modetable[i+55]);
2778    }
2779    inb(crtc_addr+6);           		/* reset flip-flop */
2780    outb(ATC ,0x20);            		/* enable palette */
2781    splx(s);
2782}
2783
2784static void
2785set_font_mode()
2786{
2787    /* setup vga for loading fonts (graphics plane mode) */
2788    inb(crtc_addr+6);
2789    outb(ATC, 0x30); outb(ATC, 0x01);
2790#if SLOW_VGA
2791    outb(TSIDX, 0x02); outb(TSREG, 0x04);
2792    outb(TSIDX, 0x04); outb(TSREG, 0x06);
2793    outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
2794    outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
2795    outb(GDCIDX, 0x06); outb(GDCREG, 0x05);
2796#else
2797    outw(TSIDX, 0x0402);
2798    outw(TSIDX, 0x0604);
2799    outw(GDCIDX, 0x0204);
2800    outw(GDCIDX, 0x0005);
2801    outw(GDCIDX, 0x0506);               /* addr = a0000, 64kb */
2802#endif
2803}
2804
2805static void
2806set_normal_mode()
2807{
2808    int s = splhigh();
2809
2810    /* setup vga for normal operation mode again */
2811    inb(crtc_addr+6);
2812    outb(ATC, 0x30); outb(ATC, 0x0C);
2813#if SLOW_VGA
2814    outb(TSIDX, 0x02); outb(TSREG, 0x03);
2815    outb(TSIDX, 0x04); outb(TSREG, 0x02);
2816    outb(GDCIDX, 0x04); outb(GDCREG, 0x00);
2817    outb(GDCIDX, 0x05); outb(GDCREG, 0x10);
2818    if (crtc_addr == MONO_BASE) {
2819	outb(GDCIDX, 0x06); outb(GDCREG, 0x0A); /* addr = b0000, 32kb */
2820    }
2821    else {
2822	outb(GDCIDX, 0x06); outb(GDCREG, 0x0E); /* addr = b8000, 32kb */
2823    }
2824#else
2825    outw(TSIDX, 0x0302);
2826    outw(TSIDX, 0x0204);
2827    outw(GDCIDX, 0x0004);
2828    outw(GDCIDX, 0x1005);
2829    if (crtc_addr == MONO_BASE)
2830	outw(GDCIDX, 0x0A06);           /* addr = b0000, 32kb */
2831    else
2832	outw(GDCIDX, 0x0E06);           /* addr = b8000, 32kb */
2833#endif
2834    splx(s);
2835}
2836
2837static void
2838copy_font(int operation, int font_type, char* font_image)
2839{
2840    int ch, line, segment, fontsize;
2841    u_char val;
2842
2843    switch (font_type) {
2844    default:
2845    case FONT_8:
2846	segment = 0x8000;
2847	fontsize = 8;
2848	break;
2849    case FONT_14:
2850	segment = 0x4000;
2851	fontsize = 14;
2852	break;
2853    case FONT_16:
2854	segment = 0x0000;
2855	fontsize = 16;
2856	break;
2857    }
2858    outb(TSIDX, 0x01); val = inb(TSREG);        /* disable screen */
2859    outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
2860    set_font_mode();
2861    for (ch=0; ch < 256; ch++)
2862	for (line=0; line < fontsize; line++)
2863	if (operation)
2864	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line) =
2865		    font_image[(ch*fontsize)+line];
2866	else
2867	    font_image[(ch*fontsize)+line] =
2868	    *(char *)pa_to_va(VIDEOMEM+(segment)+(ch*32)+line);
2869    set_normal_mode();
2870    outb(TSIDX, 0x01); outb(TSREG, val & 0xDF); /* enable screen */
2871}
2872
2873static void
2874set_destructive_cursor(scr_stat *scp, int force)
2875{
2876    u_char cursor[32];
2877    caddr_t address;
2878    int i, font_size;
2879    char *font_buffer;
2880    static u_char old_saveunder = DEAD_CHAR;
2881
2882    if (!force && (scp->cursor_saveunder & 0xFF) == old_saveunder)
2883	return;
2884    old_saveunder = force ? DEAD_CHAR : scp->cursor_saveunder & 0xFF;
2885    switch (scp->font) {
2886    default:
2887    case FONT_8:
2888	font_size = 8;
2889	font_buffer = font_8;
2890	address = (caddr_t)VIDEOMEM + 0x8000;
2891	break;
2892    case FONT_14:
2893	font_size = 14;
2894	font_buffer = font_14;
2895	address = (caddr_t)VIDEOMEM + 0x4000;
2896	break;
2897    case FONT_16:
2898	font_size = 16;
2899	font_buffer = font_16;
2900	address = (caddr_t)VIDEOMEM;
2901	break;
2902    }
2903    bcopyw(font_buffer + ((scp->cursor_saveunder & 0xff) * font_size),
2904	   cursor, font_size);
2905    for (i=0; i<32; i++)
2906	if ((i >= scp->cursor_start && i <= scp->cursor_end) ||
2907	    (scp->cursor_start >= font_size && i == font_size - 1))
2908	    cursor[i] |= 0xff;
2909    while (!(inb(crtc_addr+6) & 0x08)) /* wait for vertical retrace */ ;
2910    set_font_mode();
2911    bcopy(cursor, (char *)pa_to_va(address) + DEAD_CHAR * 32, 32);
2912    set_normal_mode();
2913}
2914
2915static void
2916draw_mouse_image(scr_stat *scp)
2917{
2918    caddr_t address;
2919    int i, font_size;
2920    char *font_buffer;
2921    u_short buffer[32];
2922    u_short xoffset, yoffset;
2923    u_short *crt_pos = Crtat + (scp->mouse_pos - scp->scr_buf);
2924
2925    xoffset = scp->mouse_xpos % 8;
2926    switch (scp->font) {
2927    default:
2928    case FONT_8:
2929	font_size = 8;
2930	font_buffer = font_8;
2931	yoffset = scp->mouse_ypos % 8;
2932	address = (caddr_t)VIDEOMEM + 0x8000;
2933	break;
2934    case FONT_14:
2935	font_size = 14;
2936	font_buffer = font_14;
2937	yoffset = scp->mouse_ypos % 14;
2938	address = (caddr_t)VIDEOMEM + 0x4000;
2939	break;
2940    case FONT_16:
2941	font_size = 16;
2942	font_buffer = font_16;
2943	yoffset = scp->mouse_ypos % 16;
2944	address = (caddr_t)VIDEOMEM;
2945	break;
2946    }
2947
2948    bcopyw(font_buffer + ((*(scp->mouse_pos) & 0xff) * font_size),
2949	   &scp->mouse_cursor[0], font_size);
2950    bcopyw(font_buffer + ((*(scp->mouse_pos+1) & 0xff) * font_size),
2951	   &scp->mouse_cursor[32], font_size);
2952    bcopyw(font_buffer + ((*(scp->mouse_pos+scp->xsize) & 0xff) * font_size),
2953	   &scp->mouse_cursor[64], font_size);
2954    bcopyw(font_buffer + ((*(scp->mouse_pos+scp->xsize+1) & 0xff) * font_size),
2955	   &scp->mouse_cursor[96], font_size);
2956
2957    for (i=0; i<font_size; i++) {
2958	buffer[i] = scp->mouse_cursor[i]<<8 | scp->mouse_cursor[i+32];
2959	buffer[i+font_size]=scp->mouse_cursor[i+64]<<8|scp->mouse_cursor[i+96];
2960    }
2961    for (i=0; i<16; i++) {
2962	buffer[i+yoffset] =
2963	    ( buffer[i+yoffset] & ~(mouse_and_mask[i] >> xoffset))
2964	    | (mouse_or_mask[i] >> xoffset);
2965    }
2966    for (i=0; i<font_size; i++) {
2967	scp->mouse_cursor[i] = (buffer[i] & 0xff00) >> 8;
2968	scp->mouse_cursor[i+32] = buffer[i] & 0xff;
2969	scp->mouse_cursor[i+64] = (buffer[i+font_size] & 0xff00) >> 8;
2970	scp->mouse_cursor[i+96] = buffer[i+font_size] & 0xff;
2971    }
2972    if (scp->status & UPDATE_MOUSE) {
2973	u_short *ptr = scp->scr_buf + (scp->mouse_oldpos - Crtat);
2974
2975	if (crt_pos != scp->mouse_oldpos) {
2976	    *(scp->mouse_oldpos) = scp->mouse_saveunder[0];
2977	    *(scp->mouse_oldpos+1) = scp->mouse_saveunder[1];
2978	    *(scp->mouse_oldpos+scp->xsize) = scp->mouse_saveunder[2];
2979	    *(scp->mouse_oldpos+scp->xsize+1) = scp->mouse_saveunder[3];
2980	}
2981	scp->mouse_saveunder[0] = *(scp->mouse_pos);
2982	scp->mouse_saveunder[1] = *(scp->mouse_pos+1);
2983	scp->mouse_saveunder[2] = *(scp->mouse_pos+scp->xsize);
2984	scp->mouse_saveunder[3] = *(scp->mouse_pos+scp->xsize+1);
2985	if ((scp->cursor_pos == (ptr)) ||
2986	    (scp->cursor_pos == (ptr+1)) ||
2987	    (scp->cursor_pos == (ptr+scp->xsize)) ||
2988	    (scp->cursor_pos == (ptr+scp->xsize+1)) ||
2989	    (scp->cursor_pos == (scp->mouse_pos)) ||
2990	    (scp->cursor_pos == (scp->mouse_pos+1)) ||
2991	    (scp->cursor_pos == (scp->mouse_pos+scp->xsize)) ||
2992	    (scp->cursor_pos == (scp->mouse_pos+scp->xsize+1)))
2993	    scp->status &= ~CURSOR_SHOWN;
2994    }
2995    scp->mouse_oldpos = crt_pos;
2996    while (!(inb(crtc_addr+6) & 0x08)) /* wait for vertical retrace */ ;
2997    *(crt_pos) = *(scp->mouse_pos)&0xff00|0xd0;
2998    *(crt_pos+1) = *(scp->mouse_pos+1)&0xff00|0xd1;
2999    *(crt_pos+scp->xsize) = *(scp->mouse_pos+scp->xsize)&0xff00|0xd2;
3000    *(crt_pos+scp->xsize+1) = *(scp->mouse_pos+scp->xsize+1)&0xff00|0xd3;
3001    set_font_mode();
3002    bcopy(scp->mouse_cursor, (char *)pa_to_va(address) + 0xd0 * 32, 128);
3003    set_normal_mode();
3004}
3005
3006static void
3007save_palette(void)
3008{
3009    int i;
3010
3011    outb(PALRADR, 0x00);
3012    for (i=0x00; i<0x300; i++)
3013	palette[i] = inb(PALDATA);
3014    inb(crtc_addr+6);           /* reset flip/flop */
3015}
3016
3017void
3018load_palette(void)
3019{
3020    int i;
3021
3022    outb(PIXMASK, 0xFF);            /* no pixelmask */
3023    outb(PALWADR, 0x00);
3024    for (i=0x00; i<0x300; i++)
3025	 outb(PALDATA, palette[i]);
3026    inb(crtc_addr+6);           /* reset flip/flop */
3027    outb(ATC, 0x20);            /* enable palette */
3028}
3029
3030static void
3031do_bell(scr_stat *scp, int pitch, int duration)
3032{
3033    if (scp == cur_console) {
3034	if (configuration & VISUAL_BELL) {
3035	    if (blink_in_progress)
3036		return;
3037	    blink_in_progress = 4;
3038	    blink_screen(scp);
3039	    timeout((timeout_func_t)blink_screen, scp, hz/10);
3040	}
3041	else
3042	    sysbeep(pitch, duration);
3043    }
3044}
3045
3046static void
3047blink_screen(scr_stat *scp)
3048{
3049    if (blink_in_progress > 1) {
3050	if (blink_in_progress & 1)
3051	    fillw(kernel_default.std_attr | scr_map[0x20],
3052		  Crtat, scp->xsize * scp->ysize);
3053	else
3054	    fillw(kernel_default.rev_attr | scr_map[0x20],
3055		  Crtat, scp->xsize * scp->ysize);
3056	blink_in_progress--;
3057	timeout((timeout_func_t)blink_screen, scp, hz/10);
3058    }
3059    else {
3060	blink_in_progress = FALSE;
3061    	mark_all(scp);
3062	if (delayed_next_scr)
3063	    switch_scr(scp, delayed_next_scr - 1);
3064    }
3065}
3066
3067#endif /* NSC */
3068