1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
|
/* $OpenBSD: pcvt_drv.c,v 1.27 1999/11/25 21:00:35 aaron Exp $ */
/*
* Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch.
*
* Copyright (c) 1992, 1993 Brian Dunford-Shore and Scott Turner.
*
* Copyright (c) 1993 Charles Hannum.
*
* All rights reserved.
*
* Parts of this code regarding the NetBSD interface were written
* by Charles Hannum. Parts regarding OpenBSD written by Aaron Campbell.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by
* Hellmuth Michaelis, Brian Dunford-Shore, Joerg Wunsch, Scott Turner
* and Charles Hannum.
* 4. The name authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @(#)pcvt_drv.c, 3.32, Last Edit-Date: [Tue Oct 3 11:19:47 1995]
*
*/
/*---------------------------------------------------------------------------*
*
* pcvt_drv.c VT220 Driver Main Module / OS - Interface
* ---------------------------------------------------------
* -hm ------------ Release 3.00 --------------
* -hm integrating NetBSD-current patches
* -hm adding ttrstrt() proto for NetBSD 0.9
* -hm kernel/console output cursor positioning fixed
* -hm kernel/console output switches optional to screen 0
* -hm FreeBSD 1.1 porting
* -hm the NetBSD 0.9 compiler detected a nondeclared var which was
* NOT detected by neither the NetBSD-current nor FreeBSD 1.x!
* -hm including Michael's keyboard fifo code
* -hm Joergs patch for FreeBSD tty-malloc code
* -hm adjustments for NetBSD-current
* -hm FreeBSD bugfix from Joerg re timeout/untimeout casts
* -jw including Thomas Gellekum's FreeBSD 1.1.5 patch
* -hm adjusting #if's for NetBSD-current
* -hm applying Joerg's patch for FreeBSD 2.0
* -hm patch from Onno & Martin for NetBSD-current (post 1.0)
* -hm some adjustments for NetBSD 1.0
* -hm NetBSD PR #400: screen size report for new session
* -hm patch from Rafael Boni/Lon Willett for NetBSD-current
* -hm bell patch from Thomas Eberhardt for NetBSD
* -hm multiple X server bugfixes from Lon Willett
* -hm patch from joerg - pcdevtotty for FreeBSD pre-2.1
* -hm delay patch from Martin Husemann after port-i386 ml-discussion
* -jw add some code to provide more FreeBSD pre-2.1 support
* -hm patches from Michael for NetBSD-current (Apr/21/95) support
* -hm merged in changes from FreeBSD 2.0.5-RELEASE
* -hm NetBSD-current patches from John Kohl
* -hm ---------------- Release 3.30 -----------------------
* -hm patch from Joerg in pcopen() to make mouse emulator work again
* -hm patch from Frank van der Linden for keyboard state per VT
* -hm no TS_ASLEEP anymore in FreeBSD 2.1.0 SNAP 950928
* -hm ---------------- Release 3.32 -----------------------
*
*---------------------------------------------------------------------------*/
#include "vt.h"
#if NVT > 0
#define EXTERN /* allocate mem */
#include "pcvt_hdr.h" /* global include */
static void vgapelinit(void); /* read initial VGA DAC palette */
void pccnpollc(Dev_t, int);
int pcprobe(struct device *, void *, void *);
void pcattach(struct device *, struct device *, void *);
int
pcprobe(struct device *parent, void *match, void *aux)
{
kbd_code_init();
((struct isa_attach_args *)aux)->ia_iosize = 16;
return 1;
}
void
pcattach(struct device *parent, struct device *self, void *aux)
{
struct isa_attach_args *ia = aux;
struct vt_softc *sc = (void *) self;
int maj;
int i;
if(do_initialization)
vt_coldinit();
vt_coldmalloc(); /* allocate memory for screens */
printf(": ");
switch(adaptor_type) {
case MDA_ADAPTOR:
printf("mda");
break;
case CGA_ADAPTOR:
printf("cga");
break;
case EGA_ADAPTOR:
printf("ega");
break;
case VGA_ADAPTOR:
printf("%s, ", (char *)vga_string(vga_type));
if(can_do_132col)
printf("80/132 col");
else
printf("80 col");
vgapelinit();
break;
default:
printf("unknown");
break;
}
if (color == 0)
printf(", mono");
else
printf(", color");
printf(", %d scr, ", totalscreens);
switch(keyboard_type) {
case KB_AT:
printf("at-");
break;
case KB_MFII:
printf("mf2-");
break;
default:
printf("unknown ");
break;
}
printf("kbd\n");
for (maj = 0; maj < nchrdev; maj++) {
if ((u_int)cdevsw[maj].d_open == (u_int)pcopen)
break;
}
for (i = 0; i < totalscreens; i++) {
vs[i].vs_tty = ttymalloc();
vs[i].vs_tty->t_dev = makedev(maj, i);
tty_attach(vs[i].vs_tty);
}
pcconsp = vs[0].vs_tty;
async_update();
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_TTY, pcintr, (void *)0, sc->sc_dev.dv_xname);
/*
* Look for children of the keyboard controller.
* XXX Really should decouple keyboard controller
* from the console code.
*/
while (config_found(self, ia->ia_ic, NULL) != NULL)
/* will break when no more children */ ;
}
/* had a look at the friedl driver */
struct tty *
get_pccons(Dev_t dev)
{
register int i = minor(dev);
if(i >= PCVT_NSCREENS)
return(NULL);
return(vs[i].vs_tty);
}
/*---------------------------------------------------------------------------*
* /dev/ttyc0, /dev/ttyc1, etc.
*---------------------------------------------------------------------------*/
int
pcopen(Dev_t dev, int flag, int mode, struct proc *p)
{
register struct tty *tp;
register struct video_state *vsx;
int s, retval;
int winsz = 0;
int i = minor(dev);
vsx = &vs[i];
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
vsx->openf++;
tp->t_oproc = pcstart;
tp->t_param = pcparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0) {
tp->t_state |= TS_WOPEN;
ttychars(tp);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
pcparam(tp, &tp->t_termios);
ttsetwater(tp);
}
else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
return (EBUSY);
tp->t_state |= TS_CARR_ON;
tp->t_cflag |= CLOCAL; /* cannot be a modem (:-) */
if ((tp->t_state & TS_ISOPEN) == 0) /* is this a "cold" open ? */
winsz = 1; /* yes, set winsize later */
retval = ((*linesw[tp->t_line].l_open)(dev, tp));
if (winsz == 1) {
/*
* The line discipline has clobbered t_winsize if TS_ISOPEN
* was clear. (NetBSD PR #400 from Bill Sommerfeld)
* We have to do this after calling the open routine, because
* it does some other things in other/older *BSD releases -hm
*/
s = spltty();
tp->t_winsize.ws_col = vsx->maxcol;
tp->t_winsize.ws_row = vsx->screen_rows;
tp->t_winsize.ws_xpixel = (vsx->maxcol == 80)? 720: 1056;
tp->t_winsize.ws_ypixel = 400;
splx(s);
}
return(retval);
}
int
pcclose(Dev_t dev, int flag, int mode, struct proc *p)
{
register struct tty *tp;
register struct video_state *vsx;
int i = minor(dev);
vsx = &vs[i];
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
(*linesw[tp->t_line].l_close)(tp, flag);
ttyclose(tp);
vsx->openf = 0;
reset_usl_modes(vsx);
return(0);
}
int
pcread(Dev_t dev, struct uio *uio, int flag)
{
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
}
int
pcwrite(Dev_t dev, struct uio *uio, int flag)
{
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
}
struct tty *
pctty(Dev_t dev)
{
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return 0;
return tp;
}
int
pcioctl(Dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
register int error;
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return(ENXIO);
/* note that some ioctl's are global, e.g. KBSTPMAT: There is
* only one keyboard and different repeat rates for instance between
* sessions are a suspicious wish. If you really need this make the
* appropriate variables arrays
*/
if((error = usl_vt_ioctl(dev, cmd, data, flag, p)) >= 0)
return (error == PCVT_ERESTART) ? ERESTART : error;
if((error = kbdioctl(dev,cmd,data,flag)) >= 0)
return error;
if((error = vgaioctl(dev,cmd,data,flag)) >= 0)
return error;
if((error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p)) >= 0)
return (error);
if((error = ttioctl(tp, cmd, data, flag, p)) >= 0)
return (error);
return (ENOTTY);
}
int
pcmmap(Dev_t dev, int offset, int nprot)
{
if ((u_int)offset > 0x20000)
return -1;
return i386_btop((0xa0000 + offset));
}
/*---------------------------------------------------------------------------*
*
* handle a keyboard receive interrupt
*
* NOTE: the keyboard is multiplexed by means of "pcconsp"
* between virtual screens. pcconsp - switching is done in
* the vgapage() routine
*
*---------------------------------------------------------------------------*/
#if PCVT_KBD_FIFO
u_char pcvt_kbd_fifo[PCVT_KBD_FIFO_SZ];
int pcvt_kbd_wptr = 0;
int pcvt_kbd_rptr = 0;
short pcvt_kbd_count= 0;
static u_char pcvt_timeout_scheduled;
static void
pcvt_timeout(void *arg)
{
int s;
u_char *cp;
pcvt_timeout_scheduled = 0;
#if PCVT_SCREENSAVER
pcvt_scrnsv_reset();
#endif /* PCVT_SCREENSAVER */
while (pcvt_kbd_count) {
if ((cp = sgetc(1)) && (vs[current_video_screen].openf)) {
#if PCVT_NULLCHARS
if(*cp == '\0') {
/* pass a NULL character */
(*linesw[pcconsp->t_line].l_rint)('\0',
pcconsp);
}
/* XXX */ else
#endif /* PCVT_NULLCHARS */
while (*cp)
(*linesw[pcconsp->t_line].l_rint)(*cp++ & 0xff,
pcconsp);
}
s = spltty();
if (!pcvt_kbd_count)
pcvt_timeout_scheduled = 0;
splx(s);
}
return;
}
#endif
int
pcintr(void *arg)
{
#if PCVT_KBD_FIFO
u_char dt;
u_char ret = -1;
int s;
#else /* !PCVT_KBD_FIFO */
u_char *cp;
#endif /* PCVT_KBD_FIFO */
#if PCVT_SCREENSAVER
pcvt_scrnsv_reset();
#endif /* PCVT_SCREENSAVER */
#if PCVT_KBD_FIFO
if (kbd_polling) {
if(sgetc(1) == 0)
return -1;
else
return 1;
}
while (inb(CONTROLLER_CTRL) & STATUS_OUTPBF) { /* check 8042 buffer */
ret = 1; /* got something */
PCVT_KBD_DELAY(); /* 7 us delay */
dt = inb(CONTROLLER_DATA); /* get it 8042 data */
if (pcvt_kbd_count >= PCVT_KBD_FIFO_SZ) /* fifo overflow ? */
log (LOG_WARNING, "pcvt: keyboard buffer overflow\n");
else {
pcvt_kbd_fifo[pcvt_kbd_wptr++] = dt; /* data -> fifo */
s = spltty(); /* XXX necessary ? */
pcvt_kbd_count++; /* update fifo count */
splx(s);
if (pcvt_kbd_wptr >= PCVT_KBD_FIFO_SZ)
pcvt_kbd_wptr = 0; /* wraparound pointer */
}
}
if (ret == 1) { /* got data from keyboard ? */
if (!pcvt_timeout_scheduled) { /* if not already active .. */
s = spltty();
pcvt_timeout_scheduled = 1; /* flag active */
timeout((TIMEOUT_FUNC_T)pcvt_timeout, (caddr_t) 0, 1);
splx(s);
}
}
return (ret);
#else /* !PCVT_KBD_FIFO */
if((cp = sgetc(1)) == 0)
return -1;
if (kbd_polling)
return 1;
if(!(vs[current_video_screen].openf)) /* XXX was vs[minor(dev)] */
return 1;
#if PCVT_NULLCHARS
if(*cp == '\0') {
/* pass a NULL character */
(*linesw[pcconsp->t_line].l_rint)('\0', pcconsp);
return 1;
}
#endif /* PCVT_NULLCHARS */
while (*cp)
(*linesw[pcconsp->t_line].l_rint)(*cp++ & 0xff, pcconsp);
return 1;
#endif /* PCVT_KBD_FIFO */
}
void
pcstart(register struct tty *tp)
{
int s, len;
u_char buf[PCVT_PCBURST];
s = spltty();
if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
goto out;
if (tp->t_outq.c_cc == 0 && tp->t_wsel.si_selpid == 0) {
async_update();
goto low;
}
tp->t_state |= TS_BUSY;
splx(s);
/*
* We need to do this outside spl since it could be fairly
* expensive and we don't want our serial ports to overflow.
*/
while ((len = q_to_b(&tp->t_outq, buf, PCVT_PCBURST)) != 0) {
if (vs[minor(tp->t_dev)].scrolling)
sgetc(31337);
sput(&buf[0], 0, len, minor(tp->t_dev));
}
s = spltty();
tp->t_state &= ~TS_BUSY;
tp->t_state |= TS_TIMEOUT;
timeout(ttrstrt, tp, 1);
if (tp->t_outq.c_cc <= tp->t_lowat) {
low:
if (tp->t_state&TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)&tp->t_outq);
}
selwakeup(&tp->t_wsel);
}
out:
splx(s);
}
void
pcstop(struct tty *tp, int flag)
{
}
/*---------------------------------------------------------------------------*
* /dev/console
*---------------------------------------------------------------------------*/
void
pccnprobe(struct consdev *cp)
{
int maj;
/* locate the major number */
for (maj = 0; maj < nchrdev; maj++) {
if ((u_int)cdevsw[maj].d_open == (u_int)pcopen)
break;
}
if (maj == nchrdev) {
/* we are not in cdevsw[], give up */
panic("pcvt is not in cdevsw[]");
}
/* initialize required fields */
cp->cn_dev = makedev(maj, 0);
cp->cn_pri = CN_INTERNAL;
}
void
pccninit(struct consdev *cp)
{
pcvt_is_console = 1;
}
void
pccnputc(Dev_t dev, U_char c)
{
#if PCVT_SW0CNOUTP
if(current_video_screen != 0)
switch_screen(0, 0);
#endif /* PCVT_SW0CNOUTP */
if (c == '\n')
sput("\r", 1, 1, 0);
sput((char *) &c, 1, 1, 0);
async_update();
}
int
pccngetc(Dev_t dev)
{
register int s;
register u_char *cp;
#ifdef XSERVER
if (dev != NODEV && vs[minor(dev)].kbd_state == K_RAW)
return 0;
#endif /* XSERVER */
s = spltty(); /* block pcrint while we poll */
cp = sgetc(0);
splx(s);
async_update();
/* this belongs to cons.c */
if (*cp == '\r')
return('\n');
return (*cp);
}
void
pccnpollc(Dev_t dev, int on)
{
kbd_polling = on;
if (!on) {
register int s;
/*
* If disabling polling, make sure there are no bytes left in
* the FIFO, holding up the interrupt line. Otherwise we
* won't get any further interrupts.
*/
s = spltty();
pcintr(NULL);
splx(s);
}
}
/*---------------------------------------------------------------------------*
* Set line parameters
*---------------------------------------------------------------------------*/
int
pcparam(struct tty *tp, struct termios *t)
{
register int cflag = t->c_cflag;
/* and copy to tty */
tp->t_ispeed = t->c_ispeed;
tp->t_ospeed = t->c_ospeed;
tp->t_cflag = cflag;
return(0);
}
/*----------------------------------------------------------------------*
* read initial VGA palette (as stored by VGA ROM BIOS) into
* palette save area
*----------------------------------------------------------------------*/
void
vgapelinit(void)
{
register unsigned idx;
register struct rgb *val;
/* first, read all and store to first screen's save buffer */
for(idx = 0, val = vs[0].palette; idx < NVGAPEL; idx++, val++)
vgapaletteio(idx, val, 0 /* read it */);
/* now, duplicate for remaining screens */
for(idx = 1; idx < PCVT_NSCREENS; idx++)
bcopy(vs[0].palette, vs[idx].palette,
NVGAPEL * sizeof(struct rgb));
}
#endif /* NVT > 0 */
|