FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/vesa.c
1 /*-
2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
3 * Copyright (c) 2009-2012 Jung-uk Kim <jkim@FreeBSD.org>
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
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/9.1/sys/dev/fb/vesa.c 233581 2012-03-27 23:59:48Z jkim $");
30
31 #include "opt_vga.h"
32 #include "opt_vesa.h"
33
34 #ifndef VGA_NO_MODE_CHANGE
35
36 #include <sys/param.h>
37 #include <sys/bus.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/lock.h>
41 #include <sys/module.h>
42 #include <sys/malloc.h>
43 #include <sys/mutex.h>
44 #include <sys/fbio.h>
45 #include <sys/sysctl.h>
46
47 #include <vm/vm.h>
48 #include <vm/vm_extern.h>
49 #include <vm/vm_kern.h>
50 #include <vm/vm_param.h>
51 #include <vm/pmap.h>
52
53 #include <machine/pc/bios.h>
54 #include <dev/fb/vesa.h>
55
56 #include <dev/fb/fbreg.h>
57 #include <dev/fb/vgareg.h>
58
59 #include <dev/pci/pcivar.h>
60
61 #include <isa/isareg.h>
62
63 #include <compat/x86bios/x86bios.h>
64
65 #define VESA_BIOS_OFFSET 0xc0000
66 #define VESA_PALETTE_SIZE (256 * 4)
67 #define VESA_VIA_CLE266 "VIA CLE266\r\n"
68
69 #ifndef VESA_DEBUG
70 #define VESA_DEBUG 0
71 #endif
72
73 /* VESA video adapter state buffer stub */
74 struct adp_state {
75 int sig;
76 #define V_STATE_SIG 0x61736576
77 u_char regs[1];
78 };
79 typedef struct adp_state adp_state_t;
80
81 static struct mtx vesa_lock;
82
83 static int vesa_state;
84 static void *vesa_state_buf;
85 static uint32_t vesa_state_buf_offs;
86 static ssize_t vesa_state_buf_size;
87
88 static u_char *vesa_palette;
89 static uint32_t vesa_palette_offs;
90
91 static void *vesa_vmem_buf;
92
93 static void *vesa_bios;
94 static uint32_t vesa_bios_offs;
95 static uint32_t vesa_bios_int10;
96 static size_t vesa_bios_size;
97
98 /* VESA video adapter */
99 static video_adapter_t *vesa_adp;
100
101 SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD, NULL, "VESA debugging");
102 static int vesa_shadow_rom;
103 TUNABLE_INT("debug.vesa.shadow_rom", &vesa_shadow_rom);
104 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom,
105 0, "Enable video BIOS shadow");
106
107 /* VESA functions */
108 #if 0
109 static int vesa_nop(void);
110 #endif
111 static int vesa_error(void);
112 static vi_probe_t vesa_probe;
113 static vi_init_t vesa_init;
114 static vi_get_info_t vesa_get_info;
115 static vi_query_mode_t vesa_query_mode;
116 static vi_set_mode_t vesa_set_mode;
117 static vi_save_font_t vesa_save_font;
118 static vi_load_font_t vesa_load_font;
119 static vi_show_font_t vesa_show_font;
120 static vi_save_palette_t vesa_save_palette;
121 static vi_load_palette_t vesa_load_palette;
122 static vi_set_border_t vesa_set_border;
123 static vi_save_state_t vesa_save_state;
124 static vi_load_state_t vesa_load_state;
125 static vi_set_win_org_t vesa_set_origin;
126 static vi_read_hw_cursor_t vesa_read_hw_cursor;
127 static vi_set_hw_cursor_t vesa_set_hw_cursor;
128 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
129 static vi_blank_display_t vesa_blank_display;
130 static vi_mmap_t vesa_mmap;
131 static vi_ioctl_t vesa_ioctl;
132 static vi_clear_t vesa_clear;
133 static vi_fill_rect_t vesa_fill_rect;
134 static vi_bitblt_t vesa_bitblt;
135 static vi_diag_t vesa_diag;
136 static int vesa_bios_info(int level);
137
138 static video_switch_t vesavidsw = {
139 vesa_probe,
140 vesa_init,
141 vesa_get_info,
142 vesa_query_mode,
143 vesa_set_mode,
144 vesa_save_font,
145 vesa_load_font,
146 vesa_show_font,
147 vesa_save_palette,
148 vesa_load_palette,
149 vesa_set_border,
150 vesa_save_state,
151 vesa_load_state,
152 vesa_set_origin,
153 vesa_read_hw_cursor,
154 vesa_set_hw_cursor,
155 vesa_set_hw_cursor_shape,
156 vesa_blank_display,
157 vesa_mmap,
158 vesa_ioctl,
159 vesa_clear,
160 vesa_fill_rect,
161 vesa_bitblt,
162 vesa_error,
163 vesa_error,
164 vesa_diag,
165 };
166
167 static video_switch_t *prevvidsw;
168
169 /* VESA BIOS video modes */
170 #define VESA_MAXMODES 64
171 #define EOT (-1)
172 #define NA (-2)
173
174 #define MODE_TABLE_DELTA 8
175
176 static int vesa_vmode_max;
177 static video_info_t *vesa_vmode;
178
179 static int vesa_init_done;
180 static struct vesa_info *vesa_adp_info;
181 static u_int16_t *vesa_vmodetab;
182 static char *vesa_oemstr;
183 static char *vesa_venderstr;
184 static char *vesa_prodstr;
185 static char *vesa_revstr;
186
187 /* local macros and functions */
188 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
189
190 static int int10_set_mode(int mode);
191 static int vesa_bios_post(void);
192 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags);
193 static int vesa_bios_set_mode(int mode);
194 #if 0
195 static int vesa_bios_get_dac(void);
196 #endif
197 static int vesa_bios_set_dac(int bits);
198 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
199 int bits);
200 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
201 u_char *b, int bits);
202 static int vesa_bios_load_palette(int start, int colors, u_char *palette,
203 int bits);
204 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
205 u_char *b, int bits);
206 #define STATE_SIZE 0
207 #define STATE_SAVE 1
208 #define STATE_LOAD 2
209 static ssize_t vesa_bios_state_buf_size(int);
210 static int vesa_bios_save_restore(int code, void *p);
211 #ifdef MODE_TABLE_BROKEN
212 static int vesa_bios_get_line_length(void);
213 #endif
214 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
215 #if 0
216 static int vesa_bios_get_start(int *x, int *y);
217 #endif
218 static int vesa_bios_set_start(int x, int y);
219 static int vesa_map_gen_mode_num(int type, int color, int mode);
220 static int vesa_translate_flags(u_int16_t vflags);
221 static int vesa_translate_mmodel(u_int8_t vmodel);
222 static int vesa_get_bpscanline(struct vesa_mode *vmode);
223 static int vesa_bios_init(void);
224 static void vesa_bios_uninit(void);
225 static void vesa_clear_modes(video_info_t *info, int color);
226
227 #if 0
228 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
229 #endif
230
231 /* INT 10 BIOS calls */
232 static int
233 int10_set_mode(int mode)
234 {
235 x86regs_t regs;
236
237 x86bios_init_regs(®s);
238 regs.R_AL = mode;
239
240 x86bios_intr(®s, 0x10);
241
242 return (0);
243 }
244
245 static int
246 vesa_bios_post(void)
247 {
248 x86regs_t regs;
249 devclass_t dc;
250 device_t *devs;
251 device_t dev;
252 int count, i, is_pci;
253
254 if (x86bios_get_orm(vesa_bios_offs) == NULL)
255 return (1);
256
257 dev = NULL;
258 is_pci = 0;
259
260 /* Find the matching PCI video controller. */
261 dc = devclass_find("vgapci");
262 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) {
263 for (i = 0; i < count; i++)
264 if (device_get_flags(devs[i]) != 0 &&
265 x86bios_match_device(vesa_bios_offs, devs[i])) {
266 dev = devs[i];
267 is_pci = 1;
268 break;
269 }
270 free(devs, M_TEMP);
271 }
272
273 /* Try VGA if a PCI device is not found. */
274 if (dev == NULL) {
275 dc = devclass_find(VGA_DRIVER_NAME);
276 if (dc != NULL)
277 dev = devclass_get_device(dc, 0);
278 }
279
280 if (bootverbose)
281 printf("%s: calling BIOS POST\n",
282 dev == NULL ? "VESA" : device_get_nameunit(dev));
283
284 x86bios_init_regs(®s);
285 if (is_pci) {
286 regs.R_AH = pci_get_bus(dev);
287 regs.R_AL = (pci_get_slot(dev) << 3) |
288 (pci_get_function(dev) & 0x07);
289 }
290 regs.R_DL = 0x80;
291 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3),
292 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3));
293
294 if (x86bios_get_intr(0x10) == 0)
295 return (1);
296
297 return (0);
298 }
299
300 /* VESA BIOS calls */
301 static int
302 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags)
303 {
304 x86regs_t regs;
305 uint32_t offs;
306 void *buf;
307
308 buf = x86bios_alloc(&offs, sizeof(*vmode), flags);
309 if (buf == NULL)
310 return (1);
311
312 x86bios_init_regs(®s);
313 regs.R_AX = 0x4f01;
314 regs.R_CX = mode;
315
316 regs.R_ES = X86BIOS_PHYSTOSEG(offs);
317 regs.R_DI = X86BIOS_PHYSTOOFF(offs);
318
319 x86bios_intr(®s, 0x10);
320
321 if (regs.R_AX != 0x004f) {
322 x86bios_free(buf, sizeof(*vmode));
323 return (1);
324 }
325
326 bcopy(buf, vmode, sizeof(*vmode));
327 x86bios_free(buf, sizeof(*vmode));
328
329 return (0);
330 }
331
332 static int
333 vesa_bios_set_mode(int mode)
334 {
335 x86regs_t regs;
336
337 x86bios_init_regs(®s);
338 regs.R_AX = 0x4f02;
339 regs.R_BX = mode;
340
341 x86bios_intr(®s, 0x10);
342
343 return (regs.R_AX != 0x004f);
344 }
345
346 #if 0
347 static int
348 vesa_bios_get_dac(void)
349 {
350 x86regs_t regs;
351
352 x86bios_init_regs(®s);
353 regs.R_AX = 0x4f08;
354 regs.R_BL = 1;
355
356 x86bios_intr(®s, 0x10);
357
358 if (regs.R_AX != 0x004f)
359 return (6);
360
361 return (regs.R_BH);
362 }
363 #endif
364
365 static int
366 vesa_bios_set_dac(int bits)
367 {
368 x86regs_t regs;
369
370 x86bios_init_regs(®s);
371 regs.R_AX = 0x4f08;
372 /* regs.R_BL = 0; */
373 regs.R_BH = bits;
374
375 x86bios_intr(®s, 0x10);
376
377 if (regs.R_AX != 0x004f)
378 return (6);
379
380 return (regs.R_BH);
381 }
382
383 static int
384 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
385 {
386 x86regs_t regs;
387 int i;
388
389 x86bios_init_regs(®s);
390 regs.R_AX = 0x4f09;
391 regs.R_BL = 1;
392 regs.R_CX = colors;
393 regs.R_DX = start;
394
395 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
396 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
397
398 bits = 8 - bits;
399 mtx_lock(&vesa_lock);
400 x86bios_intr(®s, 0x10);
401 if (regs.R_AX != 0x004f) {
402 mtx_unlock(&vesa_lock);
403 return (1);
404 }
405 for (i = 0; i < colors; ++i) {
406 palette[i * 3] = vesa_palette[i * 4 + 2] << bits;
407 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits;
408 palette[i * 3 + 2] = vesa_palette[i * 4] << bits;
409 }
410 mtx_unlock(&vesa_lock);
411
412 return (0);
413 }
414
415 static int
416 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
417 int bits)
418 {
419 x86regs_t regs;
420 int i;
421
422 x86bios_init_regs(®s);
423 regs.R_AX = 0x4f09;
424 regs.R_BL = 1;
425 regs.R_CX = colors;
426 regs.R_DX = start;
427
428 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
429 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
430
431 bits = 8 - bits;
432 mtx_lock(&vesa_lock);
433 x86bios_intr(®s, 0x10);
434 if (regs.R_AX != 0x004f) {
435 mtx_unlock(&vesa_lock);
436 return (1);
437 }
438 for (i = 0; i < colors; ++i) {
439 r[i] = vesa_palette[i * 4 + 2] << bits;
440 g[i] = vesa_palette[i * 4 + 1] << bits;
441 b[i] = vesa_palette[i * 4] << bits;
442 }
443 mtx_unlock(&vesa_lock);
444
445 return (0);
446 }
447
448 static int
449 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits)
450 {
451 x86regs_t regs;
452 int i;
453
454 x86bios_init_regs(®s);
455 regs.R_AX = 0x4f09;
456 /* regs.R_BL = 0; */
457 regs.R_CX = colors;
458 regs.R_DX = start;
459
460 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
461 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
462
463 bits = 8 - bits;
464 mtx_lock(&vesa_lock);
465 for (i = 0; i < colors; ++i) {
466 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits;
467 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits;
468 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits;
469 vesa_palette[i * 4 + 3] = 0;
470 }
471 x86bios_intr(®s, 0x10);
472 mtx_unlock(&vesa_lock);
473
474 return (regs.R_AX != 0x004f);
475 }
476
477 static int
478 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
479 int bits)
480 {
481 x86regs_t regs;
482 int i;
483
484 x86bios_init_regs(®s);
485 regs.R_AX = 0x4f09;
486 /* regs.R_BL = 0; */
487 regs.R_CX = colors;
488 regs.R_DX = start;
489
490 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
491 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
492
493 bits = 8 - bits;
494 mtx_lock(&vesa_lock);
495 for (i = 0; i < colors; ++i) {
496 vesa_palette[i * 4] = b[i] >> bits;
497 vesa_palette[i * 4 + 1] = g[i] >> bits;
498 vesa_palette[i * 4 + 2] = r[i] >> bits;
499 vesa_palette[i * 4 + 3] = 0;
500 }
501 x86bios_intr(®s, 0x10);
502 mtx_unlock(&vesa_lock);
503
504 return (regs.R_AX != 0x004f);
505 }
506
507 static ssize_t
508 vesa_bios_state_buf_size(int state)
509 {
510 x86regs_t regs;
511
512 x86bios_init_regs(®s);
513 regs.R_AX = 0x4f04;
514 /* regs.R_DL = STATE_SIZE; */
515 regs.R_CX = state;
516
517 x86bios_intr(®s, 0x10);
518
519 if (regs.R_AX != 0x004f)
520 return (0);
521
522 return (regs.R_BX * 64);
523 }
524
525 static int
526 vesa_bios_save_restore(int code, void *p)
527 {
528 x86regs_t regs;
529
530 if (code != STATE_SAVE && code != STATE_LOAD)
531 return (1);
532
533 x86bios_init_regs(®s);
534 regs.R_AX = 0x4f04;
535 regs.R_DL = code;
536 regs.R_CX = vesa_state;
537
538 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs);
539 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs);
540
541 mtx_lock(&vesa_lock);
542 switch (code) {
543 case STATE_SAVE:
544 x86bios_intr(®s, 0x10);
545 bcopy(vesa_state_buf, p, vesa_state_buf_size);
546 break;
547 case STATE_LOAD:
548 bcopy(p, vesa_state_buf, vesa_state_buf_size);
549 x86bios_intr(®s, 0x10);
550 break;
551 }
552 mtx_unlock(&vesa_lock);
553
554 return (regs.R_AX != 0x004f);
555 }
556
557 #ifdef MODE_TABLE_BROKEN
558 static int
559 vesa_bios_get_line_length(void)
560 {
561 x86regs_t regs;
562
563 x86bios_init_regs(®s);
564 regs.R_AX = 0x4f06;
565 regs.R_BL = 1;
566
567 x86bios_intr(®s, 0x10);
568
569 if (regs.R_AX != 0x004f)
570 return (-1);
571
572 return (regs.R_BX);
573 }
574 #endif
575
576 static int
577 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
578 {
579 x86regs_t regs;
580
581 x86bios_init_regs(®s);
582 regs.R_AX = 0x4f06;
583 /* regs.R_BL = 0; */
584 regs.R_CX = pixel;
585
586 x86bios_intr(®s, 0x10);
587
588 #if VESA_DEBUG > 1
589 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX);
590 #endif
591 if (regs.R_AX != 0x004f)
592 return (-1);
593
594 if (bytes != NULL)
595 *bytes = regs.R_BX;
596 if (lines != NULL)
597 *lines = regs.R_DX;
598
599 return (0);
600 }
601
602 #if 0
603 static int
604 vesa_bios_get_start(int *x, int *y)
605 {
606 x86regs_t regs;
607
608 x86bios_init_regs(®s);
609 regs.R_AX = 0x4f07;
610 regs.R_BL = 1;
611
612 x86bios_intr(®s, 0x10);
613
614 if (regs.R_AX != 0x004f)
615 return (-1);
616
617 *x = regs.R_CX;
618 *y = regs.R_DX;
619
620 return (0);
621 }
622 #endif
623
624 static int
625 vesa_bios_set_start(int x, int y)
626 {
627 x86regs_t regs;
628
629 x86bios_init_regs(®s);
630 regs.R_AX = 0x4f07;
631 regs.R_BL = 0x80;
632 regs.R_CX = x;
633 regs.R_DX = y;
634
635 x86bios_intr(®s, 0x10);
636
637 return (regs.R_AX != 0x004f);
638 }
639
640 /* map a generic video mode to a known mode */
641 static int
642 vesa_map_gen_mode_num(int type, int color, int mode)
643 {
644 static struct {
645 int from;
646 int to;
647 } mode_map[] = {
648 { M_TEXT_132x25, M_VESA_C132x25 },
649 { M_TEXT_132x43, M_VESA_C132x43 },
650 { M_TEXT_132x50, M_VESA_C132x50 },
651 { M_TEXT_132x60, M_VESA_C132x60 },
652 };
653 int i;
654
655 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
656 if (mode_map[i].from == mode)
657 return (mode_map[i].to);
658 }
659 return (mode);
660 }
661
662 static int
663 vesa_translate_flags(u_int16_t vflags)
664 {
665 static struct {
666 u_int16_t mask;
667 int set;
668 int reset;
669 } ftable[] = {
670 { V_MODECOLOR, V_INFO_COLOR, 0 },
671 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
672 { V_MODELFB, V_INFO_LINEAR, 0 },
673 { V_MODENONVGA, V_INFO_NONVGA, 0 },
674 };
675 int flags;
676 int i;
677
678 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
679 flags |= (vflags & ftable[i].mask) ?
680 ftable[i].set : ftable[i].reset;
681 }
682 return (flags);
683 }
684
685 static int
686 vesa_translate_mmodel(u_int8_t vmodel)
687 {
688 static struct {
689 u_int8_t vmodel;
690 int mmodel;
691 } mtable[] = {
692 { V_MMTEXT, V_INFO_MM_TEXT },
693 { V_MMCGA, V_INFO_MM_CGA },
694 { V_MMHGC, V_INFO_MM_HGC },
695 { V_MMEGA, V_INFO_MM_PLANAR },
696 { V_MMPACKED, V_INFO_MM_PACKED },
697 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
698 };
699 int i;
700
701 for (i = 0; mtable[i].mmodel >= 0; ++i) {
702 if (mtable[i].vmodel == vmodel)
703 return (mtable[i].mmodel);
704 }
705 return (V_INFO_MM_OTHER);
706 }
707
708 static int
709 vesa_get_bpscanline(struct vesa_mode *vmode)
710 {
711 int bpsl;
712
713 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) {
714 /* Find the minimum length. */
715 switch (vmode->v_bpp / vmode->v_planes) {
716 case 1:
717 bpsl = vmode->v_width / 8;
718 break;
719 case 2:
720 bpsl = vmode->v_width / 4;
721 break;
722 case 4:
723 bpsl = vmode->v_width / 2;
724 break;
725 default:
726 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8);
727 bpsl /= vmode->v_planes;
728 break;
729 }
730
731 /* Use VBE 3.0 information if it looks sane. */
732 if ((vmode->v_modeattr & V_MODELFB) != 0 &&
733 vesa_adp_info->v_version >= 0x0300 &&
734 vmode->v_linbpscanline > bpsl)
735 return (vmode->v_linbpscanline);
736
737 /* Return the minimum if the mode table looks absurd. */
738 if (vmode->v_bpscanline < bpsl)
739 return (bpsl);
740 }
741
742 return (vmode->v_bpscanline);
743 }
744
745 #define VESA_MAXSTR 256
746
747 #define VESA_STRCPY(dst, src) do { \
748 char *str; \
749 int i; \
750 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \
751 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \
752 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \
753 dst[i] = str[i]; \
754 dst[i] = '\0'; \
755 } while (0)
756
757 static int
758 vesa_bios_init(void)
759 {
760 struct vesa_mode vmode;
761 struct vesa_info *buf;
762 video_info_t *p;
763 x86regs_t regs;
764 size_t bsize;
765 size_t msize;
766 void *vmbuf;
767 uint8_t *vbios;
768 uint32_t offs;
769 uint16_t vers;
770 int is_via_cle266;
771 int modes;
772 int i;
773
774 if (vesa_init_done)
775 return (0);
776
777 vesa_bios_offs = VESA_BIOS_OFFSET;
778
779 /*
780 * If the VBE real mode interrupt vector is not found, try BIOS POST.
781 */
782 vesa_bios_int10 = x86bios_get_intr(0x10);
783 if (vesa_bios_int10 == 0) {
784 if (vesa_bios_post() != 0)
785 return (1);
786 vesa_bios_int10 = x86bios_get_intr(0x10);
787 if (vesa_bios_int10 == 0)
788 return (1);
789 }
790
791 /*
792 * Shadow video ROM.
793 */
794 offs = vesa_bios_int10;
795 if (vesa_shadow_rom) {
796 vbios = x86bios_get_orm(vesa_bios_offs);
797 if (vbios != NULL) {
798 vesa_bios_size = vbios[2] * 512;
799 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) ==
800 (vesa_bios_int10 & 0xffff0000) &&
801 vesa_bios_size > (vesa_bios_int10 & 0xffff)) {
802 vesa_bios = x86bios_alloc(&vesa_bios_offs,
803 vesa_bios_size, M_WAITOK);
804 bcopy(vbios, vesa_bios, vesa_bios_size);
805 offs = ((vesa_bios_offs << 12) & 0xffff0000) +
806 (vesa_bios_int10 & 0xffff);
807 x86bios_set_intr(0x10, offs);
808 }
809 }
810 if (vesa_bios == NULL)
811 printf("VESA: failed to shadow video ROM\n");
812 }
813 if (bootverbose)
814 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n",
815 (offs >> 16) & 0xffff, offs & 0xffff);
816
817 x86bios_init_regs(®s);
818 regs.R_AX = 0x4f00;
819
820 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK);
821
822 regs.R_ES = X86BIOS_PHYSTOSEG(offs);
823 regs.R_DI = X86BIOS_PHYSTOOFF(offs);
824
825 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
826 x86bios_intr(®s, 0x10);
827
828 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0)
829 goto fail;
830
831 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK);
832 bcopy(vmbuf, buf, sizeof(*buf));
833
834 if (bootverbose) {
835 printf("VESA: information block\n");
836 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS);
837 }
838
839 vers = buf->v_version = le16toh(buf->v_version);
840 buf->v_oemstr = le32toh(buf->v_oemstr);
841 buf->v_flags = le32toh(buf->v_flags);
842 buf->v_modetable = le32toh(buf->v_modetable);
843 buf->v_memsize = le16toh(buf->v_memsize);
844 buf->v_revision = le16toh(buf->v_revision);
845 buf->v_venderstr = le32toh(buf->v_venderstr);
846 buf->v_prodstr = le32toh(buf->v_prodstr);
847 buf->v_revstr = le32toh(buf->v_revstr);
848
849 if (vers < 0x0102) {
850 printf("VESA: VBE version %d.%d is not supported; "
851 "version 1.2 or later is required.\n",
852 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8),
853 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f));
854 goto fail;
855 }
856
857 VESA_STRCPY(vesa_oemstr, buf->v_oemstr);
858 if (vers >= 0x0200) {
859 VESA_STRCPY(vesa_venderstr, buf->v_venderstr);
860 VESA_STRCPY(vesa_prodstr, buf->v_prodstr);
861 VESA_STRCPY(vesa_revstr, buf->v_revstr);
862 }
863 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266,
864 sizeof(VESA_VIA_CLE266)) == 0;
865
866 if (buf->v_modetable == 0)
867 goto fail;
868
869 msize = (size_t)buf->v_memsize * 64 * 1024;
870
871 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable));
872
873 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) &&
874 (vesa_vmodetab[i] != 0xffff); ++i) {
875 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]);
876 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK))
877 continue;
878
879 vmode.v_modeattr = le16toh(vmode.v_modeattr);
880 vmode.v_wgran = le16toh(vmode.v_wgran);
881 vmode.v_wsize = le16toh(vmode.v_wsize);
882 vmode.v_waseg = le16toh(vmode.v_waseg);
883 vmode.v_wbseg = le16toh(vmode.v_wbseg);
884 vmode.v_posfunc = le32toh(vmode.v_posfunc);
885 vmode.v_bpscanline = le16toh(vmode.v_bpscanline);
886 vmode.v_width = le16toh(vmode.v_width);
887 vmode.v_height = le16toh(vmode.v_height);
888 vmode.v_lfb = le32toh(vmode.v_lfb);
889 vmode.v_offscreen = le32toh(vmode.v_offscreen);
890 vmode.v_offscreensize = le16toh(vmode.v_offscreensize);
891 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline);
892 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock);
893
894 /* reject unsupported modes */
895 #if 0
896 if ((vmode.v_modeattr &
897 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) !=
898 (V_MODESUPP | V_MODEOPTINFO))
899 continue;
900 #else
901 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
902 #if VESA_DEBUG > 1
903 printf("Rejecting VESA %s mode: %d x %d x %d bpp "
904 " attr = %x\n",
905 vmode.v_modeattr & V_MODEGRAPHICS ?
906 "graphics" : "text",
907 vmode.v_width, vmode.v_height, vmode.v_bpp,
908 vmode.v_modeattr);
909 #endif
910 continue;
911 }
912 #endif
913
914 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height;
915 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0)
916 bsize *= vmode.v_planes;
917
918 /* Does it have enough memory to support this mode? */
919 if (msize < bsize) {
920 #if VESA_DEBUG > 1
921 printf("Rejecting VESA %s mode: %d x %d x %d bpp "
922 " attr = %x, not enough memory\n",
923 vmode.v_modeattr & V_MODEGRAPHICS ?
924 "graphics" : "text",
925 vmode.v_width, vmode.v_height, vmode.v_bpp,
926 vmode.v_modeattr);
927 #endif
928 continue;
929 }
930
931 /* expand the array if necessary */
932 if (modes >= vesa_vmode_max) {
933 vesa_vmode_max += MODE_TABLE_DELTA;
934 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1),
935 M_DEVBUF, M_WAITOK);
936 #if VESA_DEBUG > 1
937 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
938 modes, vesa_vmode_max);
939 #endif
940 if (modes > 0) {
941 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
942 free(vesa_vmode, M_DEVBUF);
943 }
944 vesa_vmode = p;
945 }
946
947 #if VESA_DEBUG > 1
948 printf("Found VESA %s mode: %d x %d x %d bpp\n",
949 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
950 vmode.v_width, vmode.v_height, vmode.v_bpp);
951 #endif
952 if (is_via_cle266) {
953 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
954 vmode.v_width &= 0xff;
955 vmode.v_waseg = 0xb8000 >> 4;
956 }
957 }
958
959 /* copy some fields */
960 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
961 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
962 vesa_vmode[modes].vi_width = vmode.v_width;
963 vesa_vmode[modes].vi_height = vmode.v_height;
964 vesa_vmode[modes].vi_depth = vmode.v_bpp;
965 vesa_vmode[modes].vi_planes = vmode.v_planes;
966 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
967 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
968 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4;
969 /* XXX window B */
970 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024;
971 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024;
972 if (vmode.v_modeattr & V_MODELFB)
973 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
974 vesa_vmode[modes].vi_buffer_size = bsize;
975 vesa_vmode[modes].vi_mem_model =
976 vesa_translate_mmodel(vmode.v_memmodel);
977 switch (vesa_vmode[modes].vi_mem_model) {
978 case V_INFO_MM_DIRECT:
979 if ((vmode.v_modeattr & V_MODELFB) != 0 &&
980 vers >= 0x0300) {
981 vesa_vmode[modes].vi_pixel_fields[0] =
982 vmode.v_linredfieldpos;
983 vesa_vmode[modes].vi_pixel_fields[1] =
984 vmode.v_lingreenfieldpos;
985 vesa_vmode[modes].vi_pixel_fields[2] =
986 vmode.v_linbluefieldpos;
987 vesa_vmode[modes].vi_pixel_fields[3] =
988 vmode.v_linresfieldpos;
989 vesa_vmode[modes].vi_pixel_fsizes[0] =
990 vmode.v_linredmasksize;
991 vesa_vmode[modes].vi_pixel_fsizes[1] =
992 vmode.v_lingreenmasksize;
993 vesa_vmode[modes].vi_pixel_fsizes[2] =
994 vmode.v_linbluemasksize;
995 vesa_vmode[modes].vi_pixel_fsizes[3] =
996 vmode.v_linresmasksize;
997 } else {
998 vesa_vmode[modes].vi_pixel_fields[0] =
999 vmode.v_redfieldpos;
1000 vesa_vmode[modes].vi_pixel_fields[1] =
1001 vmode.v_greenfieldpos;
1002 vesa_vmode[modes].vi_pixel_fields[2] =
1003 vmode.v_bluefieldpos;
1004 vesa_vmode[modes].vi_pixel_fields[3] =
1005 vmode.v_resfieldpos;
1006 vesa_vmode[modes].vi_pixel_fsizes[0] =
1007 vmode.v_redmasksize;
1008 vesa_vmode[modes].vi_pixel_fsizes[1] =
1009 vmode.v_greenmasksize;
1010 vesa_vmode[modes].vi_pixel_fsizes[2] =
1011 vmode.v_bluemasksize;
1012 vesa_vmode[modes].vi_pixel_fsizes[3] =
1013 vmode.v_resmasksize;
1014 }
1015 /* FALLTHROUGH */
1016 case V_INFO_MM_PACKED:
1017 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8;
1018 break;
1019 }
1020 vesa_vmode[modes].vi_flags =
1021 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
1022
1023 ++modes;
1024 }
1025 vesa_vmode[modes].vi_mode = EOT;
1026
1027 if (bootverbose)
1028 printf("VESA: %d mode(s) found\n", modes);
1029
1030 if (modes == 0)
1031 goto fail;
1032
1033 x86bios_free(vmbuf, sizeof(*buf));
1034
1035 /* Probe supported save/restore states. */
1036 for (i = 0; i < 4; i++)
1037 if (vesa_bios_state_buf_size(1 << i) > 0)
1038 vesa_state |= 1 << i;
1039 if (vesa_state != 0)
1040 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state);
1041 vesa_palette = x86bios_alloc(&vesa_palette_offs,
1042 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK);
1043 if (vesa_state_buf_size > 0) {
1044 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE;
1045 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE;
1046 }
1047
1048 return (0);
1049
1050 fail:
1051 x86bios_free(vmbuf, sizeof(buf));
1052 vesa_bios_uninit();
1053 return (1);
1054 }
1055
1056 static void
1057 vesa_bios_uninit(void)
1058 {
1059
1060 if (vesa_bios != NULL) {
1061 x86bios_set_intr(0x10, vesa_bios_int10);
1062 vesa_bios_offs = VESA_BIOS_OFFSET;
1063 x86bios_free(vesa_bios, vesa_bios_size);
1064 vesa_bios = NULL;
1065 }
1066 if (vesa_adp_info != NULL) {
1067 free(vesa_adp_info, M_DEVBUF);
1068 vesa_adp_info = NULL;
1069 }
1070 if (vesa_oemstr != NULL) {
1071 free(vesa_oemstr, M_DEVBUF);
1072 vesa_oemstr = NULL;
1073 }
1074 if (vesa_venderstr != NULL) {
1075 free(vesa_venderstr, M_DEVBUF);
1076 vesa_venderstr = NULL;
1077 }
1078 if (vesa_prodstr != NULL) {
1079 free(vesa_prodstr, M_DEVBUF);
1080 vesa_prodstr = NULL;
1081 }
1082 if (vesa_revstr != NULL) {
1083 free(vesa_revstr, M_DEVBUF);
1084 vesa_revstr = NULL;
1085 }
1086 if (vesa_vmode != NULL) {
1087 free(vesa_vmode, M_DEVBUF);
1088 vesa_vmode = NULL;
1089 }
1090 if (vesa_palette != NULL) {
1091 x86bios_free(vesa_palette,
1092 VESA_PALETTE_SIZE + vesa_state_buf_size);
1093 vesa_palette = NULL;
1094 }
1095 }
1096
1097 static void
1098 vesa_clear_modes(video_info_t *info, int color)
1099 {
1100 while (info->vi_mode != EOT) {
1101 if ((info->vi_flags & V_INFO_COLOR) != color)
1102 info->vi_mode = NA;
1103 ++info;
1104 }
1105 }
1106
1107 /* entry points */
1108
1109 static int
1110 vesa_configure(int flags)
1111 {
1112 video_adapter_t *adp;
1113 int adapters;
1114 int error;
1115 int i;
1116
1117 if (vesa_init_done)
1118 return (0);
1119 if (flags & VIO_PROBE_ONLY)
1120 return (0);
1121
1122 /*
1123 * If the VESA module has already been loaded, abort loading
1124 * the module this time.
1125 */
1126 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
1127 if (adp->va_flags & V_ADP_VESA)
1128 return (ENXIO);
1129 if (adp->va_type == KD_VGA)
1130 break;
1131 }
1132
1133 /*
1134 * The VGA adapter is not found. This is because either
1135 * 1) the VGA driver has not been initialized, or 2) the VGA card
1136 * is not present. If 1) is the case, we shall defer
1137 * initialization for now and try again later.
1138 */
1139 if (adp == NULL) {
1140 vga_sub_configure = vesa_configure;
1141 return (ENODEV);
1142 }
1143
1144 /* count number of registered adapters */
1145 for (++i; vid_get_adapter(i) != NULL; ++i)
1146 ;
1147 adapters = i;
1148
1149 /* call VESA BIOS */
1150 vesa_adp = adp;
1151 if (vesa_bios_init()) {
1152 vesa_adp = NULL;
1153 return (ENXIO);
1154 }
1155 vesa_adp->va_flags |= V_ADP_VESA;
1156
1157 /* remove conflicting modes if we have more than one adapter */
1158 if (adapters > 1) {
1159 vesa_clear_modes(vesa_vmode,
1160 (vesa_adp->va_flags & V_ADP_COLOR) ?
1161 V_INFO_COLOR : 0);
1162 }
1163
1164 if ((error = vesa_load_ioctl()) == 0) {
1165 prevvidsw = vidsw[vesa_adp->va_index];
1166 vidsw[vesa_adp->va_index] = &vesavidsw;
1167 vesa_init_done = TRUE;
1168 } else {
1169 vesa_adp = NULL;
1170 return (error);
1171 }
1172
1173 return (0);
1174 }
1175
1176 #if 0
1177 static int
1178 vesa_nop(void)
1179 {
1180
1181 return (0);
1182 }
1183 #endif
1184
1185 static int
1186 vesa_error(void)
1187 {
1188
1189 return (1);
1190 }
1191
1192 static int
1193 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1194 {
1195
1196 return ((*prevvidsw->probe)(unit, adpp, arg, flags));
1197 }
1198
1199 static int
1200 vesa_init(int unit, video_adapter_t *adp, int flags)
1201 {
1202
1203 return ((*prevvidsw->init)(unit, adp, flags));
1204 }
1205
1206 static int
1207 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1208 {
1209 int i;
1210
1211 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
1212 return (0);
1213
1214 if (adp != vesa_adp)
1215 return (1);
1216
1217 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
1218 vesa_adp->va_flags & V_ADP_COLOR, mode);
1219 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
1220 if (vesa_vmode[i].vi_mode == NA)
1221 continue;
1222 if (vesa_vmode[i].vi_mode == mode) {
1223 *info = vesa_vmode[i];
1224 return (0);
1225 }
1226 }
1227 return (1);
1228 }
1229
1230 static int
1231 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
1232 {
1233 int i;
1234
1235 if ((*prevvidsw->query_mode)(adp, info) == 0)
1236 return (0);
1237 if (adp != vesa_adp)
1238 return (ENODEV);
1239
1240 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
1241 if ((info->vi_width != 0)
1242 && (info->vi_width != vesa_vmode[i].vi_width))
1243 continue;
1244 if ((info->vi_height != 0)
1245 && (info->vi_height != vesa_vmode[i].vi_height))
1246 continue;
1247 if ((info->vi_cwidth != 0)
1248 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
1249 continue;
1250 if ((info->vi_cheight != 0)
1251 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
1252 continue;
1253 if ((info->vi_depth != 0)
1254 && (info->vi_depth != vesa_vmode[i].vi_depth))
1255 continue;
1256 if ((info->vi_planes != 0)
1257 && (info->vi_planes != vesa_vmode[i].vi_planes))
1258 continue;
1259 /* pixel format, memory model */
1260 if ((info->vi_flags != 0)
1261 && (info->vi_flags != vesa_vmode[i].vi_flags))
1262 continue;
1263 *info = vesa_vmode[i];
1264 return (0);
1265 }
1266 return (ENODEV);
1267 }
1268
1269 static int
1270 vesa_set_mode(video_adapter_t *adp, int mode)
1271 {
1272 video_info_t info;
1273
1274 if (adp != vesa_adp)
1275 return ((*prevvidsw->set_mode)(adp, mode));
1276
1277 mode = vesa_map_gen_mode_num(adp->va_type,
1278 adp->va_flags & V_ADP_COLOR, mode);
1279 #if VESA_DEBUG > 0
1280 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
1281 adp->va_mode, adp->va_mode, mode, mode);
1282 #endif
1283 /*
1284 * If the current mode is a VESA mode and the new mode is not,
1285 * restore the state of the adapter first by setting one of the
1286 * standard VGA mode, so that non-standard, extended SVGA registers
1287 * are set to the state compatible with the standard VGA modes.
1288 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1289 * the new mode correctly.
1290 */
1291 if (VESA_MODE(adp->va_mode)) {
1292 if (!VESA_MODE(mode) &&
1293 (*prevvidsw->get_info)(adp, mode, &info) == 0) {
1294 if ((adp->va_flags & V_ADP_DAC8) != 0) {
1295 vesa_bios_set_dac(6);
1296 adp->va_flags &= ~V_ADP_DAC8;
1297 }
1298 int10_set_mode(adp->va_initial_bios_mode);
1299 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1300 pmap_unmapdev(adp->va_buffer,
1301 vesa_adp_info->v_memsize * 64 * 1024);
1302 /*
1303 * Once (*prevvidsw->get_info)() succeeded,
1304 * (*prevvidsw->set_mode)() below won't fail...
1305 */
1306 }
1307 }
1308
1309 /* we may not need to handle this mode after all... */
1310 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0)
1311 return (0);
1312
1313 /* is the new mode supported? */
1314 if (vesa_get_info(adp, mode, &info))
1315 return (1);
1316 /* assert(VESA_MODE(mode)); */
1317
1318 #if VESA_DEBUG > 0
1319 printf("VESA: about to set a VESA mode...\n");
1320 #endif
1321 /* don't use the linear frame buffer for text modes. XXX */
1322 if (!(info.vi_flags & V_INFO_GRAPHICS))
1323 info.vi_flags &= ~V_INFO_LINEAR;
1324
1325 if ((info.vi_flags & V_INFO_LINEAR) != 0)
1326 mode |= 0x4000;
1327 if (vesa_bios_set_mode(mode | 0x8000))
1328 return (1);
1329
1330 /* Palette format is reset by the above VBE function call. */
1331 adp->va_flags &= ~V_ADP_DAC8;
1332
1333 if ((vesa_adp_info->v_flags & V_DAC8) != 0 &&
1334 (info.vi_flags & V_INFO_GRAPHICS) != 0 &&
1335 vesa_bios_set_dac(8) > 6)
1336 adp->va_flags |= V_ADP_DAC8;
1337
1338 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1339 pmap_unmapdev(adp->va_buffer,
1340 vesa_adp_info->v_memsize * 64 * 1024);
1341
1342 #if VESA_DEBUG > 0
1343 printf("VESA: mode set!\n");
1344 #endif
1345 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */
1346 vesa_adp->va_flags &= ~V_ADP_COLOR;
1347 vesa_adp->va_flags |=
1348 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1349 vesa_adp->va_crtc_addr =
1350 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1351
1352 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height;
1353 if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
1354 vesa_adp->va_line_width /= info.vi_planes;
1355
1356 #ifdef MODE_TABLE_BROKEN
1357 /* If VBE function returns bigger bytes per scan line, use it. */
1358 {
1359 int bpsl = vesa_bios_get_line_length();
1360 if (bpsl > vesa_adp->va_line_width) {
1361 vesa_adp->va_line_width = bpsl;
1362 info.vi_buffer_size = bpsl * info.vi_height;
1363 if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
1364 info.vi_buffer_size *= info.vi_planes;
1365 }
1366 }
1367 #endif
1368
1369 if (info.vi_flags & V_INFO_LINEAR) {
1370 #if VESA_DEBUG > 1
1371 printf("VESA: setting up LFB\n");
1372 #endif
1373 vesa_adp->va_buffer =
1374 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer,
1375 vesa_adp_info->v_memsize * 64 * 1024, PAT_WRITE_COMBINING);
1376 vesa_adp->va_window = vesa_adp->va_buffer;
1377 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes;
1378 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes;
1379 } else {
1380 vesa_adp->va_buffer = 0;
1381 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window);
1382 vesa_adp->va_window_size = info.vi_window_size;
1383 vesa_adp->va_window_gran = info.vi_window_gran;
1384 }
1385 vesa_adp->va_buffer_size = info.vi_buffer_size;
1386 vesa_adp->va_window_orig = 0;
1387 vesa_adp->va_disp_start.x = 0;
1388 vesa_adp->va_disp_start.y = 0;
1389 #if VESA_DEBUG > 0
1390 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n",
1391 info.vi_width, vesa_adp->va_line_width);
1392 #endif
1393 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1394
1395 /* move hardware cursor out of the way */
1396 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1397
1398 return (0);
1399 }
1400
1401 static int
1402 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1403 u_char *data, int ch, int count)
1404 {
1405
1406 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data,
1407 ch, count));
1408 }
1409
1410 static int
1411 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1412 u_char *data, int ch, int count)
1413 {
1414
1415 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data,
1416 ch, count));
1417 }
1418
1419 static int
1420 vesa_show_font(video_adapter_t *adp, int page)
1421 {
1422
1423 return ((*prevvidsw->show_font)(adp, page));
1424 }
1425
1426 static int
1427 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1428 {
1429 int bits;
1430
1431 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) {
1432 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1433 if (vesa_bios_save_palette(0, 256, palette, bits) == 0)
1434 return (0);
1435 }
1436
1437 return ((*prevvidsw->save_palette)(adp, palette));
1438 }
1439
1440 static int
1441 vesa_load_palette(video_adapter_t *adp, u_char *palette)
1442 {
1443 int bits;
1444
1445 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) {
1446 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1447 if (vesa_bios_load_palette(0, 256, palette, bits) == 0)
1448 return (0);
1449 }
1450
1451 return ((*prevvidsw->load_palette)(adp, palette));
1452 }
1453
1454 static int
1455 vesa_set_border(video_adapter_t *adp, int color)
1456 {
1457
1458 return ((*prevvidsw->set_border)(adp, color));
1459 }
1460
1461 static int
1462 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1463 {
1464 vm_offset_t buf;
1465 size_t bsize;
1466
1467 if (adp != vesa_adp || vesa_state_buf_size == 0)
1468 return ((*prevvidsw->save_state)(adp, p, size));
1469
1470 if (size == 0)
1471 return (offsetof(adp_state_t, regs) + vesa_state_buf_size);
1472 if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size))
1473 return (EINVAL);
1474
1475 buf = adp->va_buffer;
1476 if (buf != 0) {
1477 bsize = adp->va_buffer_size;
1478 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT);
1479 if (vesa_vmem_buf != NULL)
1480 bcopy((void *)buf, vesa_vmem_buf, bsize);
1481 } else
1482 vesa_vmem_buf = NULL;
1483 ((adp_state_t *)p)->sig = V_STATE_SIG;
1484 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1485 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs));
1486 }
1487
1488 static int
1489 vesa_load_state(video_adapter_t *adp, void *p)
1490 {
1491 vm_offset_t buf;
1492 size_t bsize;
1493 int mode;
1494
1495 if (adp != vesa_adp)
1496 return ((*prevvidsw->load_state)(adp, p));
1497
1498 /* Try BIOS POST to restore a sane state. */
1499 (void)vesa_bios_post();
1500 bsize = adp->va_buffer_size;
1501 mode = adp->va_mode;
1502 (void)vesa_set_mode(adp, adp->va_initial_mode);
1503 if (mode != adp->va_initial_mode)
1504 (void)vesa_set_mode(adp, mode);
1505
1506 if (((adp_state_t *)p)->sig != V_STATE_SIG)
1507 return ((*prevvidsw->load_state)(adp, p));
1508 if (vesa_vmem_buf != NULL) {
1509 buf = adp->va_buffer;
1510 if (buf != 0)
1511 bcopy(vesa_vmem_buf, (void *)buf, bsize);
1512 free(vesa_vmem_buf, M_DEVBUF);
1513 }
1514 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs));
1515 }
1516
1517 #if 0
1518 static int
1519 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1520 {
1521 x86regs_t regs;
1522
1523 x86bios_init_regs(®s);
1524 regs.R_AX = 0x4f05;
1525 regs.R_BL = 0x10;
1526
1527 x86bios_intr(®s, 0x10);
1528
1529 if (regs.R_AX != 0x004f)
1530 return (1);
1531 *offset = regs.DX * adp->va_window_gran;
1532
1533 return (0);
1534 }
1535 #endif
1536
1537 static int
1538 vesa_set_origin(video_adapter_t *adp, off_t offset)
1539 {
1540 x86regs_t regs;
1541
1542 /*
1543 * This function should return as quickly as possible to
1544 * maintain good performance of the system. For this reason,
1545 * error checking is kept minimal and let the VESA BIOS to
1546 * detect error.
1547 */
1548 if (adp != vesa_adp)
1549 return ((*prevvidsw->set_win_org)(adp, offset));
1550
1551 /* if this is a linear frame buffer, do nothing */
1552 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1553 return (0);
1554 /* XXX */
1555 if (adp->va_window_gran == 0)
1556 return (1);
1557
1558 x86bios_init_regs(®s);
1559 regs.R_AX = 0x4f05;
1560 regs.R_DX = offset / adp->va_window_gran;
1561
1562 x86bios_intr(®s, 0x10);
1563
1564 if (regs.R_AX != 0x004f)
1565 return (1);
1566
1567 x86bios_init_regs(®s);
1568 regs.R_AX = 0x4f05;
1569 regs.R_BL = 1;
1570 regs.R_DX = offset / adp->va_window_gran;
1571 x86bios_intr(®s, 0x10);
1572
1573 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1574 return (0); /* XXX */
1575 }
1576
1577 static int
1578 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1579 {
1580
1581 return ((*prevvidsw->read_hw_cursor)(adp, col, row));
1582 }
1583
1584 static int
1585 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1586 {
1587
1588 return ((*prevvidsw->set_hw_cursor)(adp, col, row));
1589 }
1590
1591 static int
1592 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1593 int celsize, int blink)
1594 {
1595
1596 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1597 blink));
1598 }
1599
1600 static int
1601 vesa_blank_display(video_adapter_t *adp, int mode)
1602 {
1603
1604 /* XXX: use VESA DPMS */
1605 return ((*prevvidsw->blank_display)(adp, mode));
1606 }
1607
1608 static int
1609 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
1610 int prot, vm_memattr_t *memattr)
1611 {
1612
1613 #if VESA_DEBUG > 0
1614 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n",
1615 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1616 #endif
1617
1618 if ((adp == vesa_adp) &&
1619 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) {
1620 /* va_window_size == va_buffer_size/vi_planes */
1621 /* XXX: is this correct? */
1622 if (offset > adp->va_window_size - PAGE_SIZE)
1623 return (-1);
1624 *paddr = adp->va_info.vi_buffer + offset;
1625 return (0);
1626 }
1627 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr));
1628 }
1629
1630 static int
1631 vesa_clear(video_adapter_t *adp)
1632 {
1633
1634 return ((*prevvidsw->clear)(adp));
1635 }
1636
1637 static int
1638 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1639 {
1640
1641 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy));
1642 }
1643
1644 static int
1645 vesa_bitblt(video_adapter_t *adp,...)
1646 {
1647
1648 /* FIXME */
1649 return (1);
1650 }
1651
1652 static int
1653 get_palette(video_adapter_t *adp, int base, int count,
1654 u_char *red, u_char *green, u_char *blue, u_char *trans)
1655 {
1656 u_char *r;
1657 u_char *g;
1658 u_char *b;
1659 int bits;
1660 int error;
1661
1662 if (base < 0 || base >= 256 || count < 0 || count > 256)
1663 return (1);
1664 if ((base + count) > 256)
1665 return (1);
1666 if (!VESA_MODE(adp->va_mode))
1667 return (1);
1668
1669 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1670 r = malloc(count * 3, M_DEVBUF, M_WAITOK);
1671 g = r + count;
1672 b = g + count;
1673 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1674 if (error == 0) {
1675 copyout(r, red, count);
1676 copyout(g, green, count);
1677 copyout(b, blue, count);
1678 if (trans != NULL) {
1679 bzero(r, count);
1680 copyout(r, trans, count);
1681 }
1682 }
1683 free(r, M_DEVBUF);
1684
1685 return (error);
1686 }
1687
1688 static int
1689 set_palette(video_adapter_t *adp, int base, int count,
1690 u_char *red, u_char *green, u_char *blue, u_char *trans)
1691 {
1692 u_char *r;
1693 u_char *g;
1694 u_char *b;
1695 int bits;
1696 int error;
1697
1698 if (base < 0 || base >= 256 || count < 0 || count > 256)
1699 return (1);
1700 if ((base + count) > 256)
1701 return (1);
1702 if (!VESA_MODE(adp->va_mode))
1703 return (1);
1704
1705 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1706 r = malloc(count * 3, M_DEVBUF, M_WAITOK);
1707 g = r + count;
1708 b = g + count;
1709 copyin(red, r, count);
1710 copyin(green, g, count);
1711 copyin(blue, b, count);
1712
1713 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1714 free(r, M_DEVBUF);
1715
1716 return (error);
1717 }
1718
1719 static int
1720 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1721 {
1722 int bytes;
1723
1724 if (adp != vesa_adp)
1725 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1726
1727 switch (cmd) {
1728 case FBIO_SETWINORG: /* set frame buffer window origin */
1729 if (!VESA_MODE(adp->va_mode))
1730 return (*prevvidsw->ioctl)(adp, cmd, arg);
1731 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1732
1733 case FBIO_SETDISPSTART: /* set display start address */
1734 if (!VESA_MODE(adp->va_mode))
1735 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1736 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1737 ((video_display_start_t *)arg)->y))
1738 return (ENODEV);
1739 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1740 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1741 return (0);
1742
1743 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1744 if (!VESA_MODE(adp->va_mode))
1745 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1746 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1747 return (ENODEV);
1748 adp->va_line_width = bytes;
1749 #if VESA_DEBUG > 1
1750 printf("new line width:%d\n", adp->va_line_width);
1751 #endif
1752 return (0);
1753
1754 case FBIO_GETPALETTE: /* get color palette */
1755 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1756 ((video_color_palette_t *)arg)->count,
1757 ((video_color_palette_t *)arg)->red,
1758 ((video_color_palette_t *)arg)->green,
1759 ((video_color_palette_t *)arg)->blue,
1760 ((video_color_palette_t *)arg)->transparent))
1761 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1762 return (0);
1763
1764
1765 case FBIO_SETPALETTE: /* set color palette */
1766 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1767 ((video_color_palette_t *)arg)->count,
1768 ((video_color_palette_t *)arg)->red,
1769 ((video_color_palette_t *)arg)->green,
1770 ((video_color_palette_t *)arg)->blue,
1771 ((video_color_palette_t *)arg)->transparent))
1772 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1773 return (0);
1774
1775 case FBIOGETCMAP: /* get color palette */
1776 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1777 ((struct fbcmap *)arg)->count,
1778 ((struct fbcmap *)arg)->red,
1779 ((struct fbcmap *)arg)->green,
1780 ((struct fbcmap *)arg)->blue, NULL))
1781 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1782 return (0);
1783
1784 case FBIOPUTCMAP: /* set color palette */
1785 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1786 ((struct fbcmap *)arg)->count,
1787 ((struct fbcmap *)arg)->red,
1788 ((struct fbcmap *)arg)->green,
1789 ((struct fbcmap *)arg)->blue, NULL))
1790 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1791 return (0);
1792
1793 default:
1794 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1795 }
1796 }
1797
1798 static int
1799 vesa_diag(video_adapter_t *adp, int level)
1800 {
1801 int error;
1802
1803 /* call the previous handler first */
1804 error = (*prevvidsw->diag)(adp, level);
1805 if (error)
1806 return (error);
1807
1808 if (adp != vesa_adp)
1809 return (1);
1810
1811 if (level <= 0)
1812 return (0);
1813
1814 return (0);
1815 }
1816
1817 static int
1818 vesa_bios_info(int level)
1819 {
1820 #if VESA_DEBUG > 1
1821 struct vesa_mode vmode;
1822 int i;
1823 #endif
1824 uint16_t vers;
1825
1826 vers = vesa_adp_info->v_version;
1827
1828 if (bootverbose) {
1829 /* general adapter information */
1830 printf(
1831 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1832 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8),
1833 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f),
1834 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1835 vesa_vmodetab, vesa_adp_info->v_modetable);
1836
1837 /* OEM string */
1838 if (vesa_oemstr != NULL)
1839 printf("VESA: %s\n", vesa_oemstr);
1840 }
1841
1842 if (level <= 0)
1843 return (0);
1844
1845 if (vers >= 0x0200 && bootverbose) {
1846 /* vender name, product name, product revision */
1847 printf("VESA: %s %s %s\n",
1848 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
1849 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1850 (vesa_revstr != NULL) ? vesa_revstr : "?");
1851 }
1852
1853 #if VESA_DEBUG > 1
1854 /* mode information */
1855 for (i = 0;
1856 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1857 && (vesa_vmodetab[i] != 0xffff); ++i) {
1858 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT))
1859 continue;
1860
1861 /* print something for diagnostic purpose */
1862 printf("VESA: mode:0x%03x, flags:0x%04x",
1863 vesa_vmodetab[i], vmode.v_modeattr);
1864 if (vmode.v_modeattr & V_MODEOPTINFO) {
1865 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1866 printf(", G %dx%dx%d %d, ",
1867 vmode.v_width, vmode.v_height,
1868 vmode.v_bpp, vmode.v_planes);
1869 } else {
1870 printf(", T %dx%d, ",
1871 vmode.v_width, vmode.v_height);
1872 }
1873 printf("font:%dx%d, ",
1874 vmode.v_cwidth, vmode.v_cheight);
1875 printf("pages:%d, mem:%d",
1876 vmode.v_ipages + 1, vmode.v_memmodel);
1877 }
1878 if (vmode.v_modeattr & V_MODELFB) {
1879 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1880 vmode.v_lfb, vmode.v_offscreen,
1881 vmode.v_offscreensize*1024);
1882 }
1883 printf("\n");
1884 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1885 vmode.v_waseg, vmode.v_waattr,
1886 vmode.v_wbseg, vmode.v_wbattr);
1887 printf("size:%dk, gran:%dk\n",
1888 vmode.v_wsize, vmode.v_wgran);
1889 }
1890 #endif /* VESA_DEBUG > 1 */
1891
1892 return (0);
1893 }
1894
1895 /* module loading */
1896
1897 static int
1898 vesa_load(void)
1899 {
1900 int error;
1901
1902 if (vesa_init_done)
1903 return (0);
1904
1905 mtx_init(&vesa_lock, "VESA lock", NULL, MTX_DEF);
1906
1907 /* locate a VGA adapter */
1908 vesa_adp = NULL;
1909 error = vesa_configure(0);
1910
1911 if (error == 0)
1912 vesa_bios_info(bootverbose);
1913
1914 return (error);
1915 }
1916
1917 static int
1918 vesa_unload(void)
1919 {
1920 u_char palette[256*3];
1921 int error;
1922
1923 /* if the adapter is currently in a VESA mode, don't unload */
1924 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1925 return (EBUSY);
1926 /*
1927 * FIXME: if there is at least one vty which is in a VESA mode,
1928 * we shouldn't be unloading! XXX
1929 */
1930
1931 if ((error = vesa_unload_ioctl()) == 0) {
1932 if (vesa_adp != NULL) {
1933 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) {
1934 vesa_bios_save_palette(0, 256, palette, 8);
1935 vesa_bios_set_dac(6);
1936 vesa_adp->va_flags &= ~V_ADP_DAC8;
1937 vesa_bios_load_palette(0, 256, palette, 6);
1938 }
1939 vesa_adp->va_flags &= ~V_ADP_VESA;
1940 vidsw[vesa_adp->va_index] = prevvidsw;
1941 }
1942 }
1943
1944 vesa_bios_uninit();
1945 mtx_destroy(&vesa_lock);
1946
1947 return (error);
1948 }
1949
1950 static int
1951 vesa_mod_event(module_t mod, int type, void *data)
1952 {
1953
1954 switch (type) {
1955 case MOD_LOAD:
1956 return (vesa_load());
1957 case MOD_UNLOAD:
1958 return (vesa_unload());
1959 }
1960 return (EOPNOTSUPP);
1961 }
1962
1963 static moduledata_t vesa_mod = {
1964 "vesa",
1965 vesa_mod_event,
1966 NULL,
1967 };
1968
1969 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1970 MODULE_DEPEND(vesa, x86bios, 1, 1, 1);
1971
1972 #endif /* VGA_NO_MODE_CHANGE */
Cache object: e623383c650b09485668a093d7c7de45
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