xref: /dragonfly/sys/dev/misc/syscons/scterm-sc.c (revision 31524921)
1 /*-
2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3  * Copyright (c) 1992-1998 Søren Schmidt
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer as
11  *    the first lines of this file unmodified.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  * $FreeBSD: src/sys/dev/syscons/scterm-sc.c,v 1.4.2.10 2001/06/11 09:05:39 phk Exp $
28  */
29 
30 #include "opt_syscons.h"
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/consio.h>
36 #include <sys/thread2.h>
37 
38 #include <machine/pc/display.h>
39 
40 #include "syscons.h"
41 #include "sctermvar.h"
42 
43 #ifndef SC_DUMB_TERMINAL
44 
45 #define MAX_ESC_PAR	5
46 
47 /* attribute flags */
48 typedef struct {
49 	u_short		fg;			/* foreground color */
50 	u_short		bg;			/* background color */
51 } color_t;
52 
53 typedef struct {
54 	int		flags;
55 #define SCTERM_BUSY	(1 << 0)
56 	int		esc;
57 	int		num_param;
58 	int		last_param;
59 	int		param[MAX_ESC_PAR];
60 	int		saved_xpos;
61 	int		saved_ypos;
62 	int		attr_mask;		/* current logical attr mask */
63 #define NORMAL_ATTR	0x00
64 #define BLINK_ATTR	0x01
65 #define BOLD_ATTR	0x02
66 #define UNDERLINE_ATTR	0x04
67 #define REVERSE_ATTR	0x08
68 #define FG_CHANGED	0x10
69 #define BG_CHANGED	0x20
70 	int		cur_attr;		/* current hardware attr word */
71 	color_t		cur_color;		/* current hardware color */
72 	color_t		std_color;		/* normal hardware color */
73 	color_t		rev_color;		/* reverse hardware color */
74 	color_t		dflt_std_color;		/* default normal color */
75 	color_t		dflt_rev_color;		/* default reverse color */
76 } term_stat;
77 
78 static sc_term_init_t	scterm_init;
79 static sc_term_term_t	scterm_term;
80 static sc_term_puts_t	scterm_puts;
81 static sc_term_ioctl_t	scterm_ioctl;
82 static sc_term_reset_t	scterm_reset;
83 static sc_term_default_attr_t	scterm_default_attr;
84 static sc_term_clear_t	scterm_clear;
85 static sc_term_notify_t	scterm_notify;
86 static sc_term_input_t	scterm_input;
87 
88 static sc_term_sw_t sc_term_sc = {
89 	{ NULL, NULL },
90 	"sc",					/* emulator name */
91 	"syscons terminal",			/* description */
92 	"*",					/* matching renderer, any :-) */
93 	sizeof(term_stat),			/* softc size */
94 	0,
95 	scterm_init,
96 	scterm_term,
97 	scterm_puts,
98 	scterm_ioctl,
99 	scterm_reset,
100 	scterm_default_attr,
101 	scterm_clear,
102 	scterm_notify,
103 	scterm_input,
104 };
105 
106 SCTERM_MODULE(sc, sc_term_sc);
107 
108 static term_stat	reserved_term_stat;
109 static void		scterm_scan_esc(scr_stat *scp, term_stat *tcp,
110 					u_char c);
111 static int		mask2attr(term_stat *tcp);
112 
113 static int
114 scterm_init(scr_stat *scp, void **softc, int code)
115 {
116 	term_stat *tcp;
117 
118 	if (*softc == NULL) {
119 		if (reserved_term_stat.flags & SCTERM_BUSY)
120 			return EINVAL;
121 		*softc = &reserved_term_stat;
122 	}
123 	tcp = *softc;
124 
125 	switch (code) {
126 	case SC_TE_COLD_INIT:
127 		bzero(tcp, sizeof(*tcp));
128 		tcp->flags = SCTERM_BUSY;
129 		tcp->esc = 0;
130 		tcp->saved_xpos = -1;
131 		tcp->saved_ypos = -1;
132 		tcp->attr_mask = NORMAL_ATTR;
133 		/* XXX */
134 		tcp->dflt_std_color.fg = SC_NORM_ATTR & 0x0f;
135 		tcp->dflt_std_color.bg = (SC_NORM_ATTR >> 4) & 0x0f;
136 		tcp->dflt_rev_color.fg = SC_NORM_REV_ATTR & 0x0f;
137 		tcp->dflt_rev_color.bg = (SC_NORM_REV_ATTR >> 4) & 0x0f;
138 		tcp->std_color = tcp->dflt_std_color;
139 		tcp->rev_color = tcp->dflt_rev_color;
140 		tcp->cur_color = tcp->std_color;
141 		tcp->cur_attr = mask2attr(tcp);
142 		++sc_term_sc.te_refcount;
143 		break;
144 
145 	case SC_TE_WARM_INIT:
146 		tcp->esc = 0;
147 		tcp->saved_xpos = -1;
148 		tcp->saved_ypos = -1;
149 #if 0
150 		tcp->std_color = tcp->dflt_std_color;
151 		tcp->rev_color = tcp->dflt_rev_color;
152 #endif
153 		tcp->cur_color = tcp->std_color;
154 		tcp->cur_attr = mask2attr(tcp);
155 		break;
156 	}
157 
158 	return 0;
159 }
160 
161 static int
162 scterm_term(scr_stat *scp, void **softc)
163 {
164 	if (*softc == &reserved_term_stat) {
165 		*softc = NULL;
166 		bzero(&reserved_term_stat, sizeof(reserved_term_stat));
167 	}
168 	--sc_term_sc.te_refcount;
169 	return 0;
170 }
171 
172 static void
173 scterm_scan_esc(scr_stat *scp, term_stat *tcp, u_char c)
174 {
175 	static u_char ansi_col[16] = {
176 		FG_BLACK,     FG_RED,          FG_GREEN,      FG_BROWN,
177 		FG_BLUE,      FG_MAGENTA,      FG_CYAN,       FG_LIGHTGREY,
178 		FG_DARKGREY,  FG_LIGHTRED,     FG_LIGHTGREEN, FG_YELLOW,
179 		FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN,  FG_WHITE
180 	};
181 	sc_softc_t *sc;
182 	int i, n;
183 
184 	sc = scp->sc;
185 	if (tcp->esc == 1) {	/* seen ESC */
186 		switch (c) {
187 
188 		case '7':	/* Save cursor position */
189 			tcp->saved_xpos = scp->xpos;
190 			tcp->saved_ypos = scp->ypos;
191 			break;
192 
193 		case '8':	/* Restore saved cursor position */
194 			if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
195 				sc_move_cursor(scp, tcp->saved_xpos,
196 					       tcp->saved_ypos);
197 			break;
198 
199 		case '[':	/* Start ESC [ sequence */
200 			tcp->esc = 2;
201 			tcp->last_param = -1;
202 			for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
203 				tcp->param[i] = 1;
204 			tcp->num_param = 0;
205 			return;
206 
207 		case 'M':	/* Move cursor up 1 line, scroll if at top */
208 			sc_term_up_scroll(scp, 1, sc->scr_map[0x20],
209 					  tcp->cur_attr, 0, 0);
210 			break;
211 #if 0 /* notyet */
212 		case 'Q':
213 			tcp->esc = 4;
214 			return;
215 #endif
216 		case 'c':       /* reset */
217 			tcp->attr_mask = NORMAL_ATTR;
218 			tcp->cur_color = tcp->std_color
219 				       = tcp->dflt_std_color;
220 			tcp->rev_color = tcp->dflt_rev_color;
221 			tcp->cur_attr = mask2attr(tcp);
222 			sc_clear_screen(scp);
223 			break;
224 
225 		case '(':	/* iso-2022: designate 94 character set to G0 */
226 			tcp->esc = 5;
227 			return;
228 		}
229 	} else if (tcp->esc == 2) {	/* seen ESC [ */
230 		if (c >= '0' && c <= '9') {
231 			if (tcp->num_param < MAX_ESC_PAR) {
232 				if (tcp->last_param != tcp->num_param) {
233 					tcp->last_param = tcp->num_param;
234 					tcp->param[tcp->num_param] = 0;
235 				} else {
236 					tcp->param[tcp->num_param] *= 10;
237 				}
238 				tcp->param[tcp->num_param] += c - '0';
239 				return;
240 			}
241 		}
242 		tcp->num_param = tcp->last_param + 1;
243 		switch (c) {
244 
245 		case ';':
246 			if (tcp->num_param < MAX_ESC_PAR)
247 				return;
248 			break;
249 
250 		case '=':
251 			tcp->esc = 3;
252 			tcp->last_param = -1;
253 			for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
254 				tcp->param[i] = 1;
255 			tcp->num_param = 0;
256 			return;
257 
258 		case 'A':	/* up n rows */
259 			sc_term_up(scp, tcp->param[0], 0);
260 			break;
261 
262 		case 'B':	/* down n rows */
263 			sc_term_down(scp, tcp->param[0], 0);
264 			break;
265 
266 		case 'C':	/* right n columns */
267 			sc_term_right(scp, tcp->param[0]);
268 			break;
269 
270 		case 'D':	/* left n columns */
271 			sc_term_left(scp, tcp->param[0]);
272 			break;
273 
274 		case 'E':	/* cursor to start of line n lines down */
275 			n = tcp->param[0];
276 			if (n < 1)
277 				n = 1;
278 			sc_move_cursor(scp, 0, scp->ypos + n);
279 			break;
280 
281 		case 'F':	/* cursor to start of line n lines up */
282 			n = tcp->param[0];
283 			if (n < 1)
284 				n = 1;
285 			sc_move_cursor(scp, 0, scp->ypos - n);
286 			break;
287 
288 		case 'f':	/* Cursor move */
289 		case 'H':
290 			if (tcp->num_param == 0)
291 				sc_move_cursor(scp, 0, 0);
292 			else if (tcp->num_param == 2)
293 				sc_move_cursor(scp, tcp->param[1] - 1,
294 					       tcp->param[0] - 1);
295 			break;
296 
297 		case 'J':	/* Clear all or part of display */
298 			if (tcp->num_param == 0)
299 				n = 0;
300 			else
301 				n = tcp->param[0];
302 			sc_term_clr_eos(scp, n, sc->scr_map[0x20],
303 					tcp->cur_attr);
304 			break;
305 
306 		case 'K':	/* Clear all or part of line */
307 			if (tcp->num_param == 0)
308 				n = 0;
309 			else
310 				n = tcp->param[0];
311 			sc_term_clr_eol(scp, n, sc->scr_map[0x20],
312 					tcp->cur_attr);
313 			break;
314 
315 		case 'L':	/* Insert n lines */
316 			sc_term_ins_line(scp, scp->ypos, tcp->param[0],
317 					 sc->scr_map[0x20], tcp->cur_attr, 0);
318 			break;
319 
320 		case 'M':	/* Delete n lines */
321 			sc_term_del_line(scp, scp->ypos, tcp->param[0],
322 					 sc->scr_map[0x20], tcp->cur_attr, 0);
323 			break;
324 
325 		case 'P':	/* Delete n chars */
326 			sc_term_del_char(scp, tcp->param[0],
327 					 sc->scr_map[0x20], tcp->cur_attr);
328 			break;
329 
330 		case '@':	/* Insert n chars */
331 			sc_term_ins_char(scp, tcp->param[0],
332 					 sc->scr_map[0x20], tcp->cur_attr);
333 			break;
334 
335 		case 'S':	/* scroll up n lines */
336 			sc_term_del_line(scp, 0, tcp->param[0],
337 					 sc->scr_map[0x20], tcp->cur_attr, 0);
338 			break;
339 
340 		case 'T':	/* scroll down n lines */
341 			sc_term_ins_line(scp, 0, tcp->param[0],
342 					 sc->scr_map[0x20], tcp->cur_attr, 0);
343 			break;
344 
345 		case 'X':	/* erase n characters in line */
346 			n = tcp->param[0];
347 			if (n < 1)
348 				n = 1;
349 			if (n > scp->xsize - scp->xpos)
350 				n = scp->xsize - scp->xpos;
351 			sc_vtb_erase(&scp->vtb, scp->cursor_pos, n,
352 				     sc->scr_map[0x20], tcp->cur_attr);
353 			mark_for_update(scp, scp->cursor_pos);
354 			mark_for_update(scp, scp->cursor_pos + n - 1);
355 			break;
356 
357 		case 'Z':	/* move n tabs backwards */
358 			sc_term_backtab(scp, tcp->param[0]);
359 			break;
360 
361 		case '`':	/* move cursor to column n */
362 			sc_term_col(scp, tcp->param[0]);
363 			break;
364 
365 		case 'a':	/* move cursor n columns to the right */
366 			sc_term_right(scp, tcp->param[0]);
367 			break;
368 
369 		case 'd':	/* move cursor to row n */
370 			sc_term_row(scp, tcp->param[0]);
371 			break;
372 
373 		case 'e':	/* move cursor n rows down */
374 			sc_term_down(scp, tcp->param[0], 0);
375 			break;
376 
377 		case 'm':	/* change attribute */
378 			if (tcp->num_param == 0) {
379 				tcp->attr_mask = NORMAL_ATTR;
380 				tcp->cur_color = tcp->std_color;
381 				tcp->cur_attr = mask2attr(tcp);
382 				break;
383 			}
384 			for (i = 0; i < tcp->num_param; i++) {
385 				switch (n = tcp->param[i]) {
386 				case 0:	/* back to normal */
387 					tcp->attr_mask = NORMAL_ATTR;
388 					tcp->cur_color = tcp->std_color;
389 					tcp->cur_attr = mask2attr(tcp);
390 					break;
391 				case 1:	/* bold */
392 					tcp->attr_mask |= BOLD_ATTR;
393 					tcp->cur_attr = mask2attr(tcp);
394 					break;
395 				case 4:	/* underline */
396 					tcp->attr_mask |= UNDERLINE_ATTR;
397 					tcp->cur_attr = mask2attr(tcp);
398 					break;
399 				case 5:	/* blink */
400 					tcp->attr_mask |= BLINK_ATTR;
401 					tcp->cur_attr = mask2attr(tcp);
402 					break;
403 				case 7: /* reverse */
404 					tcp->attr_mask |= REVERSE_ATTR;
405 					tcp->cur_attr = mask2attr(tcp);
406 					break;
407 				case 22: /* remove bold (or dim) */
408 					tcp->attr_mask &= ~BOLD_ATTR;
409 					tcp->cur_attr = mask2attr(tcp);
410 					break;
411 				case 24: /* remove underline */
412 					tcp->attr_mask &= ~UNDERLINE_ATTR;
413 					tcp->cur_attr = mask2attr(tcp);
414 					break;
415 				case 25: /* remove blink */
416 					tcp->attr_mask &= ~BLINK_ATTR;
417 					tcp->cur_attr = mask2attr(tcp);
418 					break;
419 				case 27: /* remove reverse */
420 					tcp->attr_mask &= ~REVERSE_ATTR;
421 					tcp->cur_attr = mask2attr(tcp);
422 					break;
423 				case 30: case 31: /* set ansi fg color */
424 				case 32: case 33: case 34:
425 				case 35: case 36: case 37:
426 					tcp->attr_mask |= FG_CHANGED;
427 					tcp->cur_color.fg = ansi_col[n - 30];
428 					tcp->cur_attr = mask2attr(tcp);
429 					break;
430 				case 39: /* restore fg color back to normal */
431 					tcp->attr_mask &= ~(FG_CHANGED|BOLD_ATTR);
432 					tcp->cur_color.fg = tcp->std_color.fg;
433 					tcp->cur_attr = mask2attr(tcp);
434 					break;
435 				case 40: case 41: /* set ansi bg color */
436 				case 42: case 43: case 44:
437 				case 45: case 46: case 47:
438 					tcp->attr_mask |= BG_CHANGED;
439 					tcp->cur_color.bg = ansi_col[n - 40];
440 					tcp->cur_attr = mask2attr(tcp);
441 		    			break;
442 				case 49: /* restore bg color back to normal */
443 					tcp->attr_mask &= ~BG_CHANGED;
444 					tcp->cur_color.bg = tcp->std_color.bg;
445 					tcp->cur_attr = mask2attr(tcp);
446 					break;
447 				}
448 			}
449 			break;
450 
451 		case 's':	/* Save cursor position */
452 			tcp->saved_xpos = scp->xpos;
453 			tcp->saved_ypos = scp->ypos;
454 			break;
455 
456 		case 'u':	/* Restore saved cursor position */
457 			if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
458 				sc_move_cursor(scp, tcp->saved_xpos,
459 					       tcp->saved_ypos);
460 			break;
461 
462 		case 'x':
463 			if (tcp->num_param == 0)
464 				n = 0;
465 			else
466 				n = tcp->param[0];
467 			switch (n) {
468 			case 0: /* reset colors and attributes back to normal */
469 				tcp->attr_mask = NORMAL_ATTR;
470 				tcp->cur_color = tcp->std_color
471 					       = tcp->dflt_std_color;
472 				tcp->rev_color = tcp->dflt_rev_color;
473 				tcp->cur_attr = mask2attr(tcp);
474 				break;
475 			case 1:	/* set ansi background */
476 				tcp->attr_mask &= ~BG_CHANGED;
477 				tcp->cur_color.bg = tcp->std_color.bg
478 						  = ansi_col[tcp->param[1] & 0x0f];
479 				tcp->cur_attr = mask2attr(tcp);
480 				break;
481 			case 2:	/* set ansi foreground */
482 				tcp->attr_mask &= ~FG_CHANGED;
483 				tcp->cur_color.fg = tcp->std_color.fg
484 						  = ansi_col[tcp->param[1] & 0x0f];
485 				tcp->cur_attr = mask2attr(tcp);
486 				break;
487 			case 3: /* set adapter attribute directly */
488 				tcp->attr_mask &= ~(FG_CHANGED | BG_CHANGED);
489 				tcp->cur_color.fg = tcp->std_color.fg
490 						  = tcp->param[1] & 0x0f;
491 				tcp->cur_color.bg = tcp->std_color.bg
492 						  = (tcp->param[1] >> 4) & 0x0f;
493 				tcp->cur_attr = mask2attr(tcp);
494 				break;
495 			case 5: /* set ansi reverse background */
496 				tcp->rev_color.bg = ansi_col[tcp->param[1] & 0x0f];
497 				tcp->cur_attr = mask2attr(tcp);
498 				break;
499 			case 6: /* set ansi reverse foreground */
500 				tcp->rev_color.fg = ansi_col[tcp->param[1] & 0x0f];
501 				tcp->cur_attr = mask2attr(tcp);
502 				break;
503 			case 7: /* set adapter reverse attribute directly */
504 				tcp->rev_color.fg = tcp->param[1] & 0x0f;
505 				tcp->rev_color.bg = (tcp->param[1] >> 4) & 0x0f;
506 				tcp->cur_attr = mask2attr(tcp);
507 				break;
508 			}
509 			break;
510 
511 		case 'z':	/* switch to (virtual) console n */
512 			if (tcp->num_param == 1)
513 				sc_switch_scr(sc, tcp->param[0]);
514 			break;
515 		}
516 	} else if (tcp->esc == 3) {	/* seen ESC [0-9]+ = */
517 		if (c >= '0' && c <= '9') {
518 			if (tcp->num_param < MAX_ESC_PAR) {
519 				if (tcp->last_param != tcp->num_param) {
520 					tcp->last_param = tcp->num_param;
521 					tcp->param[tcp->num_param] = 0;
522 				} else {
523 					tcp->param[tcp->num_param] *= 10;
524 				}
525 				tcp->param[tcp->num_param] += c - '0';
526 				return;
527 			}
528 		}
529 		tcp->num_param = tcp->last_param + 1;
530 		switch (c) {
531 
532 		case ';':
533 			if (tcp->num_param < MAX_ESC_PAR)
534 				return;
535 			break;
536 
537 		case 'A':   /* set display border color */
538 			if (tcp->num_param == 1) {
539 				scp->border=tcp->param[0] & 0xff;
540 				if (scp == sc->cur_scp)
541 					sc_set_border(scp, scp->border);
542 			}
543 			break;
544 
545 		case 'B':   /* set bell pitch and duration */
546 			if (tcp->num_param == 2) {
547 				scp->bell_pitch = tcp->param[0];
548 				scp->bell_duration =
549 				    (tcp->param[1] * hz + 99) / 100;
550 			}
551 			break;
552 
553 		case 'C':   /* set cursor type & shape */
554 			crit_enter();
555 			if (!ISGRAPHSC(sc->cur_scp))
556 				sc_remove_cursor_image(sc->cur_scp);
557 			if (tcp->num_param == 1) {
558 				if (tcp->param[0] & 0x01)
559 					sc->flags |= SC_BLINK_CURSOR;
560 				else
561 					sc->flags &= ~SC_BLINK_CURSOR;
562 				if (tcp->param[0] & 0x02)
563 					sc->flags |= SC_CHAR_CURSOR;
564 				else
565 					sc->flags &= ~SC_CHAR_CURSOR;
566 			} else if (tcp->num_param == 2) {
567 				sc->cursor_base = scp->font_height
568 						- (tcp->param[1] & 0x1F) - 1;
569 				sc->cursor_height = (tcp->param[1] & 0x1F)
570 						- (tcp->param[0] & 0x1F) + 1;
571 				if (sc->cursor_base < 0)
572 					sc->cursor_base = 0;
573 
574 				if (sc->cursor_height < 1) {
575 					sc->cursor_height = 1;
576 				} else if (sc->cursor_height >
577 					   scp->font_height -
578 					   scp->cursor_base) {
579 					sc->cursor_height = scp->font_height -
580 							    scp->cursor_base;
581 				}
582 			}
583 			/*
584 			 * The cursor shape is global property;
585 			 * all virtual consoles are affected.
586 			 * Update the cursor in the current console...
587 			 */
588 			if (!ISGRAPHSC(sc->cur_scp)) {
589 				sc_set_cursor_image(sc->cur_scp);
590 				sc_draw_cursor_image(sc->cur_scp);
591 			}
592 			crit_exit();
593 			break;
594 
595 		case 'F':   /* set adapter foreground */
596 			if (tcp->num_param == 1) {
597 				tcp->attr_mask &= ~FG_CHANGED;
598 				tcp->cur_color.fg = tcp->std_color.fg
599 						  = tcp->param[0] & 0x0f;
600 				tcp->cur_attr = mask2attr(tcp);
601 			}
602 			break;
603 
604 		case 'G':   /* set adapter background */
605 			if (tcp->num_param == 1) {
606 				tcp->attr_mask &= ~BG_CHANGED;
607 				tcp->cur_color.bg = tcp->std_color.bg
608 						  = tcp->param[0] & 0x0f;
609 				tcp->cur_attr = mask2attr(tcp);
610 			}
611 			break;
612 
613 		case 'H':   /* set adapter reverse foreground */
614 			if (tcp->num_param == 1) {
615 				tcp->rev_color.fg = tcp->param[0] & 0x0f;
616 				tcp->cur_attr = mask2attr(tcp);
617 			}
618 			break;
619 
620 		case 'I':   /* set adapter reverse background */
621 			if (tcp->num_param == 1) {
622 				tcp->rev_color.bg = tcp->param[0] & 0x0f;
623 				tcp->cur_attr = mask2attr(tcp);
624 			}
625 			break;
626 		}
627 #if 0 /* notyet */
628 	} else if (tcp->esc == 4) {	/* seen ESC Q */
629 		/* to be filled */
630 #endif
631 	} else if (tcp->esc == 5) {	/* seen ESC ( */
632 		switch (c) {
633 		case 'B':   /* iso-2022: desginate ASCII into G0 */
634 			break;
635 		/* other items to be filled */
636 		default:
637 			break;
638 		}
639 	}
640 	tcp->esc = 0;
641 }
642 
643 static void
644 scterm_puts(scr_stat *scp, u_char *buf, int len)
645 {
646 	term_stat *tcp;
647 
648 	tcp = scp->ts;
649 outloop:
650 	atomic_add_char(&scp->sc->write_in_progress, 1);
651 
652 	if (tcp->esc) {
653 		scterm_scan_esc(scp, tcp, *buf);
654 		buf++;
655 		len--;
656 	} else {
657 		switch (*buf) {
658 		case 0x1b:
659 			tcp->esc = 1;
660 			tcp->num_param = 0;
661 			buf++;
662 			len--;
663 			break;
664 		default:
665 			sc_term_gen_print(scp, &buf, &len, tcp->cur_attr);
666 			break;
667 		}
668 	}
669 
670 	sc_term_gen_scroll(scp, scp->sc->scr_map[0x20], tcp->cur_attr);
671 
672 	atomic_add_char(&scp->sc->write_in_progress, -1);
673 	if (len)
674 		goto outloop;
675 }
676 
677 static int
678 scterm_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
679 	     int flag)
680 {
681 	term_stat *tcp = scp->ts;
682 	vid_info_t *vi;
683 
684 	switch (cmd) {
685 	case GIO_ATTR:      	/* get current attributes */
686 		/* FIXME: */
687 		*(int*)data = (tcp->cur_attr >> 8) & 0xff;
688 		return 0;
689 	case CONS_GETINFO:  	/* get current (virtual) console info */
690 		vi = (vid_info_t *)data;
691 		if (vi->size != sizeof(struct vid_info))
692 			return EINVAL;
693 		vi->mv_norm.fore = tcp->std_color.fg;
694 		vi->mv_norm.back = tcp->std_color.bg;
695 		vi->mv_rev.fore = tcp->rev_color.fg;
696 		vi->mv_rev.back = tcp->rev_color.bg;
697 		/*
698 		 * The other fields are filled by the upper routine. XXX
699 		 */
700 		return ENOIOCTL;
701 	}
702 	return ENOIOCTL;
703 }
704 
705 static int
706 scterm_reset(scr_stat *scp, int code)
707 {
708 	/* FIXME */
709 	return 0;
710 }
711 
712 static void
713 scterm_default_attr(scr_stat *scp, int color, int rev_color)
714 {
715 	term_stat *tcp = scp->ts;
716 
717 	tcp->dflt_std_color.fg = color & 0x0f;
718 	tcp->dflt_std_color.bg = (color >> 4) & 0x0f;
719 	tcp->dflt_rev_color.fg = rev_color & 0x0f;
720 	tcp->dflt_rev_color.bg = (rev_color >> 4) & 0x0f;
721 	tcp->std_color = tcp->dflt_std_color;
722 	tcp->rev_color = tcp->dflt_rev_color;
723 	tcp->cur_color = tcp->std_color;
724 	tcp->cur_attr = mask2attr(tcp);
725 }
726 
727 static void
728 scterm_clear(scr_stat *scp)
729 {
730 	term_stat *tcp = scp->ts;
731 
732 	sc_move_cursor(scp, 0, 0);
733 	sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], tcp->cur_attr);
734 	mark_all(scp);
735 }
736 
737 static void
738 scterm_notify(scr_stat *scp, int event)
739 {
740 	switch (event) {
741 	case SC_TE_NOTIFY_VTSWITCH_IN:
742 		break;
743 	case SC_TE_NOTIFY_VTSWITCH_OUT:
744 		break;
745 	}
746 }
747 
748 static int
749 scterm_input(scr_stat *scp, int c, struct tty *tp)
750 {
751 	return FALSE;
752 }
753 
754 /*
755  * Calculate hardware attributes word using logical attributes mask and
756  * hardware colors
757  */
758 
759 /* FIXME */
760 static int
761 mask2attr(term_stat *tcp)
762 {
763 	int attr, mask = tcp->attr_mask;
764 
765 	if (mask & REVERSE_ATTR) {
766 		attr = ((mask & FG_CHANGED) ?
767 			tcp->cur_color.bg : tcp->rev_color.fg) |
768 			(((mask & BG_CHANGED) ?
769 			tcp->cur_color.fg : tcp->rev_color.bg) << 4);
770 	} else
771 		attr = tcp->cur_color.fg | (tcp->cur_color.bg << 4);
772 
773 	/* XXX: underline mapping for Hercules adapter can be better */
774 	if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
775 		attr ^= 0x08;
776 	if (mask & BLINK_ATTR)
777 		attr ^= 0x80;
778 
779 	return (attr << 8);
780 }
781 
782 #endif /* SC_DUMB_TERMINAL */
783