1 /*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Ralph Campbell and Rick Macklem.
7 *
8 * %sccs.include.redist.c%
9 *
10 * @(#)cfb.c 8.2 (Berkeley) 06/02/95
11 */
12
13 /*
14 * devGraphics.c --
15 *
16 * This file contains machine-dependent routines for the graphics device.
17 *
18 * Copyright (C) 1989 Digital Equipment Corporation.
19 * Permission to use, copy, modify, and distribute this software and
20 * its documentation for any purpose and without fee is hereby granted,
21 * provided that the above copyright notice appears in all copies.
22 * Digital Equipment Corporation makes no representations about the
23 * suitability of this software for any purpose. It is provided "as is"
24 * without express or implied warranty.
25 *
26 * from: $Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
27 * v 9.2 90/02/13 22:16:24 shirriff Exp $ SPRITE (DECWRL)";
28 */
29 /*
30 * Mach Operating System
31 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
32 * All Rights Reserved.
33 *
34 * Permission to use, copy, modify and distribute this software and its
35 * documentation is hereby granted, provided that both the copyright
36 * notice and this permission notice appear in all copies of the
37 * software, derivative works or modified versions, and any portions
38 * thereof, and that both notices appear in supporting documentation.
39 *
40 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
41 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
42 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
43 *
44 * Carnegie Mellon requests users of this software to return to
45 *
46 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
47 * School of Computer Science
48 * Carnegie Mellon University
49 * Pittsburgh PA 15213-3890
50 *
51 * any improvements or extensions that they make and grant Carnegie the
52 * rights to redistribute these changes.
53 */
54
55 #include <cfb.h>
56 #if NCFB > 0
57 #include <sys/param.h>
58 #include <sys/time.h>
59 #include <sys/kernel.h>
60 #include <sys/ioctl.h>
61 #include <sys/file.h>
62 #include <sys/errno.h>
63 #include <sys/proc.h>
64 #include <sys/mman.h>
65
66 #include <vm/vm.h>
67
68 #include <machine/machConst.h>
69 #include <machine/pmioctl.h>
70
71 #include <pmax/pmax/maxine.h>
72 #include <pmax/pmax/cons.h>
73 #include <pmax/pmax/pmaxtype.h>
74
75 #include <pmax/dev/device.h>
76 #include <pmax/dev/cfbreg.h>
77 #include <pmax/dev/fbreg.h>
78
79 #include <dc.h>
80 #include <dtop.h>
81 #include <scc.h>
82
83 #define PMAX /* enable /dev/pm compatibility */
84
85 /*
86 * These need to be mapped into user space.
87 */
88 struct fbuaccess cfbu;
89 struct pmax_fb cfbfb;
90
91 /*
92 * Forward references.
93 */
94 static void cfbScreenInit();
95 static void cfbLoadCursor();
96 static void cfbRestoreCursorColor();
97 static void cfbCursorColor();
98 void cfbPosCursor();
99 static void cfbInitColorMap();
100 static void cfbLoadColorMap();
101 static void bt459_set_cursor_ram(), bt459_video_on(), bt459_video_off();
102 static void bt459_select_reg(), bt459_write_reg();
103 static u_char bt459_read_reg();
104 static void cfbConfigMouse(), cfbDeconfigMouse();
105
106 void cfbKbdEvent(), cfbMouseEvent(), cfbMouseButtons();
107 #if NDC > 0
108 extern void (*dcDivertXInput)();
109 extern void (*dcMouseEvent)();
110 extern void (*dcMouseButtons)();
111 #endif
112 #if NSCC > 0
113 extern void (*sccDivertXInput)();
114 extern void (*sccMouseEvent)();
115 extern void (*sccMouseButtons)();
116 #endif
117 #if NDTOP > 0
118 extern void (*dtopDivertXInput)();
119 extern void (*dtopMouseEvent)();
120 extern void (*dtopMouseButtons)();
121 #endif
122 extern int pmax_boardtype;
123 extern u_short defCursor[32];
124 extern struct consdev cn_tab;
125
126 int cfbprobe();
127 struct driver cfbdriver = {
128 "cfb", cfbprobe, 0, 0,
129 };
130
131 #define CFB_OFFSET_VRAM 0x0 /* from module's base */
132 #define CFB_OFFSET_BT459 0x200000 /* Bt459 registers */
133 #define CFB_OFFSET_IREQ 0x300000 /* Interrupt req. control */
134 #define CFB_OFFSET_ROM 0x380000 /* Diagnostic ROM */
135 #define CFB_OFFSET_RESET 0x3c0000 /* Bt459 resets on writes */
136 #define CFB_FB_SIZE 0x100000 /* frame buffer size */
137
138 /*
139 * Test to see if device is present.
140 * Return true if found and initialized ok.
141 */
142 /*ARGSUSED*/
cfbprobe(cp)143 cfbprobe(cp)
144 register struct pmax_ctlr *cp;
145 {
146 register struct pmax_fb *fp = &cfbfb;
147
148 if (!fp->initialized && !cfbinit(cp->pmax_addr))
149 return (0);
150 printf("cfb0 (color display)\n");
151 return (1);
152 }
153
154 /*ARGSUSED*/
cfbopen(dev,flag)155 cfbopen(dev, flag)
156 dev_t dev;
157 int flag;
158 {
159 register struct pmax_fb *fp = &cfbfb;
160 int s;
161
162 if (!fp->initialized)
163 return (ENXIO);
164 if (fp->GraphicsOpen)
165 return (EBUSY);
166
167 fp->GraphicsOpen = 1;
168 cfbInitColorMap();
169 /*
170 * Set up event queue for later
171 */
172 fp->fbu->scrInfo.qe.eSize = PM_MAXEVQ;
173 fp->fbu->scrInfo.qe.eHead = fp->fbu->scrInfo.qe.eTail = 0;
174 fp->fbu->scrInfo.qe.tcSize = MOTION_BUFFER_SIZE;
175 fp->fbu->scrInfo.qe.tcNext = 0;
176 fp->fbu->scrInfo.qe.timestamp_ms = TO_MS(time);
177 cfbConfigMouse();
178 return (0);
179 }
180
181 /*ARGSUSED*/
cfbclose(dev,flag)182 cfbclose(dev, flag)
183 dev_t dev;
184 int flag;
185 {
186 register struct pmax_fb *fp = &cfbfb;
187 int s;
188
189 if (!fp->GraphicsOpen)
190 return (EBADF);
191
192 fp->GraphicsOpen = 0;
193 cfbInitColorMap();
194 cfbDeconfigMouse();
195 cfbScreenInit();
196 bzero((caddr_t)fp->fr_addr, 1024 * 864);
197 cfbPosCursor(fp->col * 8, fp->row * 15);
198 return (0);
199 }
200
201 /*ARGSUSED*/
cfbioctl(dev,cmd,data,flag,p)202 cfbioctl(dev, cmd, data, flag, p)
203 dev_t dev;
204 u_long cmd;
205 caddr_t data;
206 struct proc *p;
207 {
208 register struct pmax_fb *fp = &cfbfb;
209 int s;
210
211 switch (cmd) {
212 case QIOCGINFO:
213 return (fbmmap(fp, dev, data, p));
214
215 case QIOCPMSTATE:
216 /*
217 * Set mouse state.
218 */
219 fp->fbu->scrInfo.mouse = *(pmCursor *)data;
220 cfbPosCursor(fp->fbu->scrInfo.mouse.x, fp->fbu->scrInfo.mouse.y);
221 break;
222
223 case QIOCINIT:
224 /*
225 * Initialize the screen.
226 */
227 cfbScreenInit();
228 break;
229
230 case QIOCKPCMD:
231 {
232 pmKpCmd *kpCmdPtr;
233 unsigned char *cp;
234
235 kpCmdPtr = (pmKpCmd *)data;
236 if (kpCmdPtr->nbytes == 0)
237 kpCmdPtr->cmd |= 0x80;
238 if (!fp->GraphicsOpen)
239 kpCmdPtr->cmd |= 1;
240 (*fp->KBDPutc)(fp->kbddev, (int)kpCmdPtr->cmd);
241 cp = &kpCmdPtr->par[0];
242 for (; kpCmdPtr->nbytes > 0; cp++, kpCmdPtr->nbytes--) {
243 if (kpCmdPtr->nbytes == 1)
244 *cp |= 0x80;
245 (*fp->KBDPutc)(fp->kbddev, (int)*cp);
246 }
247 break;
248 }
249
250 case QIOCADDR:
251 *(PM_Info **)data = &fp->fbu->scrInfo;
252 break;
253
254 case QIOWCURSOR:
255 cfbLoadCursor((unsigned short *)data);
256 break;
257
258 case QIOWCURSORCOLOR:
259 cfbCursorColor((unsigned int *)data);
260 break;
261
262 case QIOSETCMAP:
263 cfbLoadColorMap((ColorMap *)data);
264 break;
265
266 case QIOKERNLOOP:
267 cfbConfigMouse();
268 break;
269
270 case QIOKERNUNLOOP:
271 cfbDeconfigMouse();
272 break;
273
274 case QIOVIDEOON:
275 cfbRestoreCursorColor();
276 bt459_video_on();
277 break;
278
279 case QIOVIDEOOFF:
280 bt459_video_off();
281 break;
282
283 default:
284 printf("cfb0: Unknown ioctl command %x\n", cmd);
285 return (EINVAL);
286 }
287 return (0);
288 }
289
cfbselect(dev,flag,p)290 cfbselect(dev, flag, p)
291 dev_t dev;
292 int flag;
293 struct proc *p;
294 {
295 struct pmax_fb *fp = &cfbfb;
296
297 switch (flag) {
298 case FREAD:
299 if (fp->fbu->scrInfo.qe.eHead != fp->fbu->scrInfo.qe.eTail)
300 return (1);
301 selrecord(p, &fp->selp);
302 break;
303 }
304
305 return (0);
306 }
307
308 /*
309 * Return the physical page number that corresponds to byte offset 'off'.
310 */
311 /*ARGSUSED*/
cfbmap(dev,off,prot)312 cfbmap(dev, off, prot)
313 dev_t dev;
314 {
315 int len;
316
317 len = pmax_round_page(((vm_offset_t)&cfbu & PGOFSET) + sizeof(cfbu));
318 if (off < len)
319 return pmax_btop(MACH_CACHED_TO_PHYS(&cfbu) + off);
320 off -= len;
321 if (off >= cfbfb.fr_size)
322 return (-1);
323 return pmax_btop(MACH_UNCACHED_TO_PHYS(cfbfb.fr_addr) + off);
324 }
325
326 static u_char cursor_RGB[6]; /* cursor color 2 & 3 */
327
328 /*
329 * XXX This assumes 2bits/cursor pixel so that the 1Kbyte cursor RAM
330 * defines a 64x64 cursor. If the bt459 does not map the cursor RAM
331 * this way, this code is Screwed!
332 */
333 static void
cfbLoadCursor(cursor)334 cfbLoadCursor(cursor)
335 u_short *cursor;
336 {
337 #ifdef PMAX
338 register int i, j, k, pos;
339 register u_short ap, bp, out;
340
341 /*
342 * Fill in the cursor sprite using the A and B planes, as provided
343 * for the pmax.
344 * XXX This will have to change when the X server knows that this
345 * is not a pmax display.
346 */
347 pos = 0;
348 for (k = 0; k < 16; k++) {
349 ap = *cursor;
350 bp = *(cursor + 16);
351 j = 0;
352 while (j < 4) {
353 out = 0;
354 for (i = 0; i < 4; i++) {
355 #ifndef CURSOR_EB
356 out = (out << 2) | ((ap & 0x1) << 1) |
357 (bp & 0x1);
358 #else
359 out = ((out >> 2) & 0x3f) |
360 ((ap & 0x1) << 7) |
361 ((bp & 0x1) << 6);
362 #endif
363 ap >>= 1;
364 bp >>= 1;
365 }
366 bt459_set_cursor_ram(pos, out);
367 pos++;
368 j++;
369 }
370 while (j < 16) {
371 bt459_set_cursor_ram(pos, 0);
372 pos++;
373 j++;
374 }
375 cursor++;
376 }
377 while (pos < 1024) {
378 bt459_set_cursor_ram(pos, 0);
379 pos++;
380 }
381 #endif /* PMAX */
382 }
383
384 /*
385 * Set a cursor ram value.
386 */
387 static void
bt459_set_cursor_ram(pos,val)388 bt459_set_cursor_ram(pos, val)
389 int pos;
390 register u_char val;
391 {
392 register bt459_regmap_t *regs = (bt459_regmap_t *)
393 (cfbfb.fr_addr + CFB_OFFSET_BT459);
394 register int cnt;
395 u_char nval;
396
397 cnt = 0;
398 do {
399 bt459_write_reg(regs, BT459_REG_CRAM_BASE + pos, val);
400 nval = bt459_read_reg(regs, BT459_REG_CRAM_BASE + pos);
401 } while (val != nval && ++cnt < 10);
402 }
403
404 /*
405 * Generic register access
406 */
407 static void
bt459_select_reg(regs,regno)408 bt459_select_reg(regs, regno)
409 bt459_regmap_t *regs;
410 {
411 regs->addr_lo = regno;
412 regs->addr_hi = regno >> 8;
413 MachEmptyWriteBuffer();
414 }
415
416 static void
bt459_write_reg(regs,regno,val)417 bt459_write_reg(regs, regno, val)
418 bt459_regmap_t *regs;
419 {
420 regs->addr_lo = regno;
421 regs->addr_hi = regno >> 8;
422 MachEmptyWriteBuffer();
423 regs->addr_reg = val;
424 MachEmptyWriteBuffer();
425 }
426
427 static u_char
bt459_read_reg(regs,regno)428 bt459_read_reg(regs, regno)
429 bt459_regmap_t *regs;
430 {
431 regs->addr_lo = regno;
432 regs->addr_hi = regno >> 8;
433 MachEmptyWriteBuffer();
434 return (regs->addr_reg);
435 }
436
437 /*
438 * Initialization
439 */
440 int
cfbinit(cp)441 cfbinit(cp)
442 char *cp;
443 {
444 register bt459_regmap_t *regs;
445 register struct pmax_fb *fp = &cfbfb;
446
447 /* check for no frame buffer */
448 if (badaddr(cp, 4))
449 return (0);
450
451 fp->isMono = 0;
452 fp->fr_addr = (char *)(cp + CFB_OFFSET_VRAM);
453 fp->fr_size = CFB_FB_SIZE;
454 /*
455 * Must be in Uncached space since the fbuaccess structure is
456 * mapped into the user's address space uncached.
457 */
458 fp->fbu = (struct fbuaccess *)
459 MACH_PHYS_TO_UNCACHED(MACH_CACHED_TO_PHYS(&cfbu));
460 fp->posCursor = cfbPosCursor;
461 if (tb_kbdmouseconfig(fp))
462 return (0);
463
464 /*
465 * Initialize the screen.
466 */
467 regs = (bt459_regmap_t *)(fp->fr_addr + CFB_OFFSET_BT459);
468
469 if (bt459_read_reg(regs, BT459_REG_ID) != 0x4a)
470 return (0);
471
472 /* Reset the chip */
473 *(volatile int *)(fp->fr_addr + CFB_OFFSET_RESET) = 0;
474 DELAY(2000); /* ???? check right time on specs! ???? */
475
476 /* use 4:1 input mux */
477 bt459_write_reg(regs, BT459_REG_CMD0, 0x40);
478
479 /* no zooming, no panning */
480 bt459_write_reg(regs, BT459_REG_CMD1, 0x00);
481
482 /*
483 * signature test, X-windows cursor, no overlays, SYNC* PLL,
484 * normal RAM select, 7.5 IRE pedestal, do sync
485 */
486 #ifndef PMAX
487 bt459_write_reg(regs, BT459_REG_CMD2, 0xc2);
488 #else /* PMAX */
489 bt459_write_reg(regs, BT459_REG_CMD2, 0xc0);
490 #endif /* PMAX */
491
492 /* get all pixel bits */
493 bt459_write_reg(regs, BT459_REG_PRM, 0xff);
494
495 /* no blinking */
496 bt459_write_reg(regs, BT459_REG_PBM, 0x00);
497
498 /* no overlay */
499 bt459_write_reg(regs, BT459_REG_ORM, 0x00);
500
501 /* no overlay blink */
502 bt459_write_reg(regs, BT459_REG_OBM, 0x00);
503
504 /* no interleave, no underlay */
505 bt459_write_reg(regs, BT459_REG_ILV, 0x00);
506
507 /* normal operation, no signature analysis */
508 bt459_write_reg(regs, BT459_REG_TEST, 0x00);
509
510 /*
511 * no blinking, 1bit cross hair, XOR reg&crosshair,
512 * no crosshair on either plane 0 or 1,
513 * regular cursor on both planes.
514 */
515 bt459_write_reg(regs, BT459_REG_CCR, 0xc0);
516
517 /* home cursor */
518 bt459_write_reg(regs, BT459_REG_CXLO, 0x00);
519 bt459_write_reg(regs, BT459_REG_CXHI, 0x00);
520 bt459_write_reg(regs, BT459_REG_CYLO, 0x00);
521 bt459_write_reg(regs, BT459_REG_CYHI, 0x00);
522
523 /* no crosshair window */
524 bt459_write_reg(regs, BT459_REG_WXLO, 0x00);
525 bt459_write_reg(regs, BT459_REG_WXHI, 0x00);
526 bt459_write_reg(regs, BT459_REG_WYLO, 0x00);
527 bt459_write_reg(regs, BT459_REG_WYHI, 0x00);
528 bt459_write_reg(regs, BT459_REG_WWLO, 0x00);
529 bt459_write_reg(regs, BT459_REG_WWHI, 0x00);
530 bt459_write_reg(regs, BT459_REG_WHLO, 0x00);
531 bt459_write_reg(regs, BT459_REG_WHHI, 0x00);
532
533 /*
534 * Initialize screen info.
535 */
536 fp->fbu->scrInfo.max_row = 56;
537 fp->fbu->scrInfo.max_col = 80;
538 fp->fbu->scrInfo.max_x = 1024;
539 fp->fbu->scrInfo.max_y = 864;
540 fp->fbu->scrInfo.max_cur_x = 1023;
541 fp->fbu->scrInfo.max_cur_y = 863;
542 fp->fbu->scrInfo.version = 11;
543 fp->fbu->scrInfo.mthreshold = 4;
544 fp->fbu->scrInfo.mscale = 2;
545 fp->fbu->scrInfo.min_cur_x = 0;
546 fp->fbu->scrInfo.min_cur_y = 0;
547 fp->fbu->scrInfo.qe.timestamp_ms = TO_MS(time);
548 fp->fbu->scrInfo.qe.eSize = PM_MAXEVQ;
549 fp->fbu->scrInfo.qe.eHead = fp->fbu->scrInfo.qe.eTail = 0;
550 fp->fbu->scrInfo.qe.tcSize = MOTION_BUFFER_SIZE;
551 fp->fbu->scrInfo.qe.tcNext = 0;
552
553 /*
554 * Initialize the color map, the screen, and the mouse.
555 */
556 cfbInitColorMap();
557 cfbScreenInit();
558 fbScroll(fp);
559
560 fp->initialized = 1;
561 if (cn_tab.cn_fb == (struct pmax_fb *)0)
562 cn_tab.cn_fb = fp;
563 return (1);
564 }
565
566 /*
567 * ----------------------------------------------------------------------------
568 *
569 * cfbScreenInit --
570 *
571 * Initialize the screen.
572 *
573 * Results:
574 * None.
575 *
576 * Side effects:
577 * The screen is initialized.
578 *
579 * ----------------------------------------------------------------------------
580 */
581 static void
cfbScreenInit()582 cfbScreenInit()
583 {
584 register struct pmax_fb *fp = &cfbfb;
585
586 /*
587 * Home the cursor.
588 * We want an LSI terminal emulation. We want the graphics
589 * terminal to scroll from the bottom. So start at the bottom.
590 */
591 fp->row = 55;
592 fp->col = 0;
593
594 /*
595 * Load the cursor with the default values
596 *
597 */
598 cfbLoadCursor(defCursor);
599 }
600
601 /*
602 * ----------------------------------------------------------------------------
603 *
604 * RestoreCursorColor --
605 *
606 * Routine to restore the color of the cursor.
607 *
608 * Results:
609 * None.
610 *
611 * Side effects:
612 * None.
613 *
614 * ----------------------------------------------------------------------------
615 */
616 static void
cfbRestoreCursorColor()617 cfbRestoreCursorColor()
618 {
619 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
620 register int i;
621
622 #ifndef PMAX
623 bt459_select_reg(regs, BT459_REG_CCOLOR_2);
624 for (i = 0; i < 6; i++) {
625 regs->addr_reg = cursor_RGB[i];
626 MachEmptyWriteBuffer();
627 }
628 #else /* PMAX */
629 bt459_select_reg(regs, BT459_REG_CCOLOR_1);
630 for (i = 0; i < 3; i++) {
631 regs->addr_reg = cursor_RGB[i];
632 MachEmptyWriteBuffer();
633 }
634 bt459_select_reg(regs, BT459_REG_CCOLOR_3);
635 for (i = 3; i < 6; i++) {
636 regs->addr_reg = cursor_RGB[i];
637 MachEmptyWriteBuffer();
638 }
639 #endif /* PMAX */
640 }
641
642 /*
643 * ----------------------------------------------------------------------------
644 *
645 * CursorColor --
646 *
647 * Set the color of the cursor.
648 *
649 * Results:
650 * None.
651 *
652 * Side effects:
653 * None.
654 *
655 * ----------------------------------------------------------------------------
656 */
657 static void
cfbCursorColor(color)658 cfbCursorColor(color)
659 unsigned int color[];
660 {
661 register int i, j;
662
663 for (i = 0; i < 6; i++)
664 cursor_RGB[i] = (u_char)(color[i] >> 8);
665
666 cfbRestoreCursorColor();
667 }
668
669 /*
670 *----------------------------------------------------------------------
671 *
672 * PosCursor --
673 *
674 * Postion the cursor.
675 *
676 * Results:
677 * None.
678 *
679 * Side effects:
680 * None.
681 *
682 *----------------------------------------------------------------------
683 */
684 void
cfbPosCursor(x,y)685 cfbPosCursor(x, y)
686 register int x, y;
687 {
688 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
689 register struct pmax_fb *fp = &cfbfb;
690
691 if (y < fp->fbu->scrInfo.min_cur_y || y > fp->fbu->scrInfo.max_cur_y)
692 y = fp->fbu->scrInfo.max_cur_y;
693 if (x < fp->fbu->scrInfo.min_cur_x || x > fp->fbu->scrInfo.max_cur_x)
694 x = fp->fbu->scrInfo.max_cur_x;
695 fp->fbu->scrInfo.cursor.x = x; /* keep track of real cursor */
696 fp->fbu->scrInfo.cursor.y = y; /* position, indep. of mouse */
697
698 x += 219;
699 y += 34;
700
701 bt459_select_reg(regs, BT459_REG_CXLO);
702 regs->addr_reg = x;
703 MachEmptyWriteBuffer();
704 regs->addr_reg = x >> 8;
705 MachEmptyWriteBuffer();
706 regs->addr_reg = y;
707 MachEmptyWriteBuffer();
708 regs->addr_reg = y >> 8;
709 MachEmptyWriteBuffer();
710 }
711
712 /*
713 * ----------------------------------------------------------------------------
714 *
715 * InitColorMap --
716 *
717 * Initialize the color map.
718 *
719 * Results:
720 * None.
721 *
722 * Side effects:
723 * The colormap is initialized appropriately.
724 *
725 * ----------------------------------------------------------------------------
726 */
727 static void
cfbInitColorMap()728 cfbInitColorMap()
729 {
730 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
731 register int i;
732
733 bt459_select_reg(regs, 0);
734 regs->addr_cmap = 0; MachEmptyWriteBuffer();
735 regs->addr_cmap = 0; MachEmptyWriteBuffer();
736 regs->addr_cmap = 0; MachEmptyWriteBuffer();
737
738 for (i = 1; i < 256; i++) {
739 regs->addr_cmap = 0xff; MachEmptyWriteBuffer();
740 regs->addr_cmap = 0xff; MachEmptyWriteBuffer();
741 regs->addr_cmap = 0xff; MachEmptyWriteBuffer();
742 }
743
744 for (i = 0; i < 3; i++) {
745 cursor_RGB[i] = 0x00;
746 cursor_RGB[i + 3] = 0xff;
747 }
748 cfbRestoreCursorColor();
749 }
750
751 /*
752 * ----------------------------------------------------------------------------
753 *
754 * LoadColorMap --
755 *
756 * Load the color map.
757 *
758 * Results:
759 * None.
760 *
761 * Side effects:
762 * The color map is loaded.
763 *
764 * ----------------------------------------------------------------------------
765 */
766 static void
cfbLoadColorMap(ptr)767 cfbLoadColorMap(ptr)
768 ColorMap *ptr;
769 {
770 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
771
772 if (ptr->index > 256)
773 return;
774
775 bt459_select_reg(regs, ptr->index);
776
777 regs->addr_cmap = ptr->Entry.red; MachEmptyWriteBuffer();
778 regs->addr_cmap = ptr->Entry.green; MachEmptyWriteBuffer();
779 regs->addr_cmap = ptr->Entry.blue; MachEmptyWriteBuffer();
780 }
781
782 /*
783 * Video on/off state.
784 */
785 static struct vstate {
786 u_char color0[3]; /* saved color map entry zero */
787 u_char off; /* TRUE if display is off */
788 } vstate;
789
790 /*
791 * ----------------------------------------------------------------------------
792 *
793 * bt459_video_on
794 *
795 * Enable the video display.
796 *
797 * Results:
798 * None.
799 *
800 * Side effects:
801 * The display is enabled.
802 *
803 * ----------------------------------------------------------------------------
804 */
805 static void
bt459_video_on()806 bt459_video_on()
807 {
808 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
809
810 if (!vstate.off)
811 return;
812
813 /* restore old color map entry zero */
814 bt459_select_reg(regs, 0);
815 regs->addr_cmap = vstate.color0[0];
816 MachEmptyWriteBuffer();
817 regs->addr_cmap = vstate.color0[1];
818 MachEmptyWriteBuffer();
819 regs->addr_cmap = vstate.color0[2];
820 MachEmptyWriteBuffer();
821
822 /* enable normal display */
823 bt459_write_reg(regs, BT459_REG_PRM, 0xff);
824 bt459_write_reg(regs, BT459_REG_CCR, 0xc0);
825
826 vstate.off = 0;
827 }
828
829 /*
830 * ----------------------------------------------------------------------------
831 *
832 * bt459_video_off
833 *
834 * Disable the video display.
835 *
836 * Results:
837 * None.
838 *
839 * Side effects:
840 * The display is disabled.
841 *
842 * ----------------------------------------------------------------------------
843 */
844 static void
bt459_video_off()845 bt459_video_off()
846 {
847 bt459_regmap_t *regs = (bt459_regmap_t *)(cfbfb.fr_addr + CFB_OFFSET_BT459);
848
849 if (vstate.off)
850 return;
851
852 /* save old color map entry zero */
853 bt459_select_reg(regs, 0);
854 vstate.color0[0] = regs->addr_cmap;
855 vstate.color0[1] = regs->addr_cmap;
856 vstate.color0[2] = regs->addr_cmap;
857
858 /* set color map entry zero to zero */
859 bt459_select_reg(regs, 0);
860 regs->addr_cmap = 0;
861 MachEmptyWriteBuffer();
862 regs->addr_cmap = 0;
863 MachEmptyWriteBuffer();
864 regs->addr_cmap = 0;
865 MachEmptyWriteBuffer();
866
867 /* disable display */
868 bt459_write_reg(regs, BT459_REG_PRM, 0);
869 bt459_write_reg(regs, BT459_REG_CCR, 0);
870
871 vstate.off = 1;
872 }
873
874 /*
875 * cfb keyboard and mouse input. Just punt to the generic ones in fb.c
876 */
877 void
cfbKbdEvent(ch)878 cfbKbdEvent(ch)
879 int ch;
880 {
881 fbKbdEvent(ch, &cfbfb);
882 }
883
884 void
cfbMouseEvent(newRepPtr)885 cfbMouseEvent(newRepPtr)
886 MouseReport *newRepPtr;
887 {
888 fbMouseEvent(newRepPtr, &cfbfb);
889 }
890
891 void
cfbMouseButtons(newRepPtr)892 cfbMouseButtons(newRepPtr)
893 MouseReport *newRepPtr;
894 {
895 fbMouseButtons(newRepPtr, &cfbfb);
896 }
897
898 /*
899 * Configure the mouse and keyboard based on machine type
900 */
901 static void
cfbConfigMouse()902 cfbConfigMouse()
903 {
904 int s;
905
906 s = spltty();
907 switch (pmax_boardtype) {
908 #if NDC > 0
909 case DS_3MAX:
910 dcDivertXInput = cfbKbdEvent;
911 dcMouseEvent = cfbMouseEvent;
912 dcMouseButtons = cfbMouseButtons;
913 break;
914 #endif
915 #if NSCC > 1
916 case DS_3MIN:
917 sccDivertXInput = cfbKbdEvent;
918 sccMouseEvent = cfbMouseEvent;
919 sccMouseButtons = cfbMouseButtons;
920 break;
921 #endif
922 #if NDTOP > 0
923 case DS_MAXINE:
924 dtopDivertXInput = cfbKbdEvent;
925 dtopMouseEvent = cfbMouseEvent;
926 dtopMouseButtons = cfbMouseButtons;
927 break;
928 #endif
929 default:
930 printf("Can't configure mouse/keyboard\n");
931 };
932 splx(s);
933 }
934
935 /*
936 * and deconfigure them
937 */
938 static void
cfbDeconfigMouse()939 cfbDeconfigMouse()
940 {
941 int s;
942
943 s = spltty();
944 switch (pmax_boardtype) {
945 #if NDC > 0
946 case DS_3MAX:
947 dcDivertXInput = (void (*)())0;
948 dcMouseEvent = (void (*)())0;
949 dcMouseButtons = (void (*)())0;
950 break;
951 #endif
952 #if NSCC > 1
953 case DS_3MIN:
954 sccDivertXInput = (void (*)())0;
955 sccMouseEvent = (void (*)())0;
956 sccMouseButtons = (void (*)())0;
957 break;
958 #endif
959 #if NDTOP > 0
960 case DS_MAXINE:
961 dtopDivertXInput = (void (*)())0;
962 dtopMouseEvent = (void (*)())0;
963 dtopMouseButtons = (void (*)())0;
964 break;
965 #endif
966 default:
967 printf("Can't deconfigure mouse/keyboard\n");
968 };
969 }
970 #endif /* NCFB */
971