1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
5 * Copyright (c) 2009-2013 Jung-uk Kim <jkim@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer as
13 * the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
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 MTX_SYSINIT(vesa_lock, &vesa_lock, "VESA lock", MTX_DEF);
83
84 static int vesa_state;
85 static void *vesa_state_buf;
86 static uint32_t vesa_state_buf_offs;
87 static size_t vesa_state_buf_size;
88
89 static u_char *vesa_palette;
90 static uint32_t vesa_palette_offs;
91
92 static void *vesa_vmem_buf;
93 static size_t vesa_vmem_max;
94
95 static void *vesa_bios;
96 static uint32_t vesa_bios_offs;
97 static uint32_t vesa_bios_int10;
98 static size_t vesa_bios_size;
99
100 /* VESA video adapter */
101 static video_adapter_t *vesa_adp;
102
103 static SYSCTL_NODE(_debug, OID_AUTO, vesa, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL,
104 "VESA debugging");
105 static int vesa_shadow_rom;
106 SYSCTL_INT(_debug_vesa, OID_AUTO, shadow_rom, CTLFLAG_RDTUN, &vesa_shadow_rom,
107 0, "Enable video BIOS shadow");
108
109 /* VESA functions */
110 #if 0
111 static int vesa_nop(void);
112 #endif
113 static int vesa_error(void);
114 static vi_probe_t vesa_probe;
115 static vi_init_t vesa_init;
116 static vi_get_info_t vesa_get_info;
117 static vi_query_mode_t vesa_query_mode;
118 static vi_set_mode_t vesa_set_mode;
119 static vi_save_font_t vesa_save_font;
120 static vi_load_font_t vesa_load_font;
121 static vi_show_font_t vesa_show_font;
122 static vi_save_palette_t vesa_save_palette;
123 static vi_load_palette_t vesa_load_palette;
124 static vi_set_border_t vesa_set_border;
125 static vi_save_state_t vesa_save_state;
126 static vi_load_state_t vesa_load_state;
127 static vi_set_win_org_t vesa_set_origin;
128 static vi_read_hw_cursor_t vesa_read_hw_cursor;
129 static vi_set_hw_cursor_t vesa_set_hw_cursor;
130 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
131 static vi_blank_display_t vesa_blank_display;
132 static vi_mmap_t vesa_mmap;
133 static vi_ioctl_t vesa_ioctl;
134 static vi_clear_t vesa_clear;
135 static vi_fill_rect_t vesa_fill_rect;
136 static vi_bitblt_t vesa_bitblt;
137 static vi_diag_t vesa_diag;
138 static int vesa_bios_info(int level);
139
140 static video_switch_t vesavidsw = {
141 vesa_probe,
142 vesa_init,
143 vesa_get_info,
144 vesa_query_mode,
145 vesa_set_mode,
146 vesa_save_font,
147 vesa_load_font,
148 vesa_show_font,
149 vesa_save_palette,
150 vesa_load_palette,
151 vesa_set_border,
152 vesa_save_state,
153 vesa_load_state,
154 vesa_set_origin,
155 vesa_read_hw_cursor,
156 vesa_set_hw_cursor,
157 vesa_set_hw_cursor_shape,
158 vesa_blank_display,
159 vesa_mmap,
160 vesa_ioctl,
161 vesa_clear,
162 vesa_fill_rect,
163 vesa_bitblt,
164 vesa_error,
165 vesa_error,
166 vesa_diag,
167 };
168
169 static video_switch_t *prevvidsw;
170
171 /* VESA BIOS video modes */
172 #define VESA_MAXMODES 64
173 #define EOT (-1)
174 #define NA (-2)
175
176 #define MODE_TABLE_DELTA 8
177
178 static int vesa_vmode_max;
179 static video_info_t *vesa_vmode;
180
181 static int vesa_init_done;
182 static struct vesa_info *vesa_adp_info;
183 static u_int16_t *vesa_vmodetab;
184 static char *vesa_oemstr;
185 static char *vesa_venderstr;
186 static char *vesa_prodstr;
187 static char *vesa_revstr;
188
189 /* local macros and functions */
190 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
191
192 static int int10_set_mode(int mode);
193 static int vesa_bios_post(void);
194 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags);
195 static int vesa_bios_set_mode(int mode);
196 #if 0
197 static int vesa_bios_get_dac(void);
198 #endif
199 static int vesa_bios_set_dac(int bits);
200 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
201 int bits);
202 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
203 u_char *b, int bits);
204 static int vesa_bios_load_palette(int start, int colors, u_char *palette,
205 int bits);
206 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
207 u_char *b, int bits);
208 #define STATE_SIZE 0
209 #define STATE_SAVE 1
210 #define STATE_LOAD 2
211 static size_t vesa_bios_state_buf_size(int);
212 static int vesa_bios_save_restore(int code, void *p);
213 #ifdef MODE_TABLE_BROKEN
214 static int vesa_bios_get_line_length(void);
215 #endif
216 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
217 #if 0
218 static int vesa_bios_get_start(int *x, int *y);
219 #endif
220 static int vesa_bios_set_start(int x, int y);
221 static int vesa_map_gen_mode_num(int type, int color, int mode);
222 static int vesa_translate_flags(u_int16_t vflags);
223 static int vesa_translate_mmodel(u_int8_t vmodel);
224 static int vesa_get_bpscanline(struct vesa_mode *vmode);
225 static int vesa_bios_init(void);
226 static void vesa_bios_uninit(void);
227 static void vesa_clear_modes(video_info_t *info, int color);
228
229 #if 0
230 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
231 #endif
232
233 /* INT 10 BIOS calls */
234 static int
int10_set_mode(int mode)235 int10_set_mode(int mode)
236 {
237 x86regs_t regs;
238
239 x86bios_init_regs(®s);
240 regs.R_AL = mode;
241
242 x86bios_intr(®s, 0x10);
243
244 return (0);
245 }
246
247 static int
vesa_bios_post(void)248 vesa_bios_post(void)
249 {
250 x86regs_t regs;
251 devclass_t dc;
252 device_t *devs;
253 device_t dev;
254 int count, i, is_pci;
255
256 if (x86bios_get_orm(vesa_bios_offs) == NULL)
257 return (1);
258
259 dev = NULL;
260 is_pci = 0;
261
262 /* Find the matching PCI video controller. */
263 dc = devclass_find("vgapci");
264 if (dc != NULL && devclass_get_devices(dc, &devs, &count) == 0) {
265 for (i = 0; i < count; i++)
266 if (device_get_flags(devs[i]) != 0 &&
267 x86bios_match_device(vesa_bios_offs, devs[i])) {
268 dev = devs[i];
269 is_pci = 1;
270 break;
271 }
272 free(devs, M_TEMP);
273 }
274
275 /* Try VGA if a PCI device is not found. */
276 if (dev == NULL) {
277 dc = devclass_find(VGA_DRIVER_NAME);
278 if (dc != NULL)
279 dev = devclass_get_device(dc, 0);
280 }
281
282 if (bootverbose)
283 printf("%s: calling BIOS POST\n",
284 dev == NULL ? "VESA" : device_get_nameunit(dev));
285
286 x86bios_init_regs(®s);
287 if (is_pci) {
288 regs.R_AH = pci_get_bus(dev);
289 regs.R_AL = (pci_get_slot(dev) << 3) |
290 (pci_get_function(dev) & 0x07);
291 }
292 regs.R_DL = 0x80;
293 x86bios_call(®s, X86BIOS_PHYSTOSEG(vesa_bios_offs + 3),
294 X86BIOS_PHYSTOOFF(vesa_bios_offs + 3));
295
296 if (x86bios_get_intr(0x10) == 0)
297 return (1);
298
299 return (0);
300 }
301
302 /* VESA BIOS calls */
303 static int
vesa_bios_get_mode(int mode,struct vesa_mode * vmode,int flags)304 vesa_bios_get_mode(int mode, struct vesa_mode *vmode, int flags)
305 {
306 x86regs_t regs;
307 uint32_t offs;
308 void *buf;
309
310 buf = x86bios_alloc(&offs, sizeof(*vmode), flags);
311 if (buf == NULL)
312 return (1);
313
314 x86bios_init_regs(®s);
315 regs.R_AX = 0x4f01;
316 regs.R_CX = mode;
317
318 regs.R_ES = X86BIOS_PHYSTOSEG(offs);
319 regs.R_DI = X86BIOS_PHYSTOOFF(offs);
320
321 x86bios_intr(®s, 0x10);
322
323 if (regs.R_AX != 0x004f) {
324 x86bios_free(buf, sizeof(*vmode));
325 return (1);
326 }
327
328 bcopy(buf, vmode, sizeof(*vmode));
329 x86bios_free(buf, sizeof(*vmode));
330
331 return (0);
332 }
333
334 static int
vesa_bios_set_mode(int mode)335 vesa_bios_set_mode(int mode)
336 {
337 x86regs_t regs;
338
339 x86bios_init_regs(®s);
340 regs.R_AX = 0x4f02;
341 regs.R_BX = mode;
342
343 x86bios_intr(®s, 0x10);
344
345 return (regs.R_AX != 0x004f);
346 }
347
348 #if 0
349 static int
350 vesa_bios_get_dac(void)
351 {
352 x86regs_t regs;
353
354 x86bios_init_regs(®s);
355 regs.R_AX = 0x4f08;
356 regs.R_BL = 1;
357
358 x86bios_intr(®s, 0x10);
359
360 if (regs.R_AX != 0x004f)
361 return (6);
362
363 return (regs.R_BH);
364 }
365 #endif
366
367 static int
vesa_bios_set_dac(int bits)368 vesa_bios_set_dac(int bits)
369 {
370 x86regs_t regs;
371
372 x86bios_init_regs(®s);
373 regs.R_AX = 0x4f08;
374 /* regs.R_BL = 0; */
375 regs.R_BH = bits;
376
377 x86bios_intr(®s, 0x10);
378
379 if (regs.R_AX != 0x004f)
380 return (6);
381
382 return (regs.R_BH);
383 }
384
385 static int
vesa_bios_save_palette(int start,int colors,u_char * palette,int bits)386 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
387 {
388 x86regs_t regs;
389 int i;
390
391 x86bios_init_regs(®s);
392 regs.R_AX = 0x4f09;
393 regs.R_BL = 1;
394 regs.R_CX = colors;
395 regs.R_DX = start;
396
397 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
398 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
399
400 bits = 8 - bits;
401 mtx_lock(&vesa_lock);
402 x86bios_intr(®s, 0x10);
403 if (regs.R_AX != 0x004f) {
404 mtx_unlock(&vesa_lock);
405 return (1);
406 }
407 for (i = 0; i < colors; ++i) {
408 palette[i * 3] = vesa_palette[i * 4 + 2] << bits;
409 palette[i * 3 + 1] = vesa_palette[i * 4 + 1] << bits;
410 palette[i * 3 + 2] = vesa_palette[i * 4] << bits;
411 }
412 mtx_unlock(&vesa_lock);
413
414 return (0);
415 }
416
417 static int
vesa_bios_save_palette2(int start,int colors,u_char * r,u_char * g,u_char * b,int bits)418 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
419 int bits)
420 {
421 x86regs_t regs;
422 int i;
423
424 x86bios_init_regs(®s);
425 regs.R_AX = 0x4f09;
426 regs.R_BL = 1;
427 regs.R_CX = colors;
428 regs.R_DX = start;
429
430 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
431 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
432
433 bits = 8 - bits;
434 mtx_lock(&vesa_lock);
435 x86bios_intr(®s, 0x10);
436 if (regs.R_AX != 0x004f) {
437 mtx_unlock(&vesa_lock);
438 return (1);
439 }
440 for (i = 0; i < colors; ++i) {
441 r[i] = vesa_palette[i * 4 + 2] << bits;
442 g[i] = vesa_palette[i * 4 + 1] << bits;
443 b[i] = vesa_palette[i * 4] << bits;
444 }
445 mtx_unlock(&vesa_lock);
446
447 return (0);
448 }
449
450 static int
vesa_bios_load_palette(int start,int colors,u_char * palette,int bits)451 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits)
452 {
453 x86regs_t regs;
454 int i;
455
456 x86bios_init_regs(®s);
457 regs.R_AX = 0x4f09;
458 /* regs.R_BL = 0; */
459 regs.R_CX = colors;
460 regs.R_DX = start;
461
462 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
463 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
464
465 bits = 8 - bits;
466 mtx_lock(&vesa_lock);
467 for (i = 0; i < colors; ++i) {
468 vesa_palette[i * 4] = palette[i * 3 + 2] >> bits;
469 vesa_palette[i * 4 + 1] = palette[i * 3 + 1] >> bits;
470 vesa_palette[i * 4 + 2] = palette[i * 3] >> bits;
471 vesa_palette[i * 4 + 3] = 0;
472 }
473 x86bios_intr(®s, 0x10);
474 mtx_unlock(&vesa_lock);
475
476 return (regs.R_AX != 0x004f);
477 }
478
479 static int
vesa_bios_load_palette2(int start,int colors,u_char * r,u_char * g,u_char * b,int bits)480 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
481 int bits)
482 {
483 x86regs_t regs;
484 int i;
485
486 x86bios_init_regs(®s);
487 regs.R_AX = 0x4f09;
488 /* regs.R_BL = 0; */
489 regs.R_CX = colors;
490 regs.R_DX = start;
491
492 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_palette_offs);
493 regs.R_DI = X86BIOS_PHYSTOOFF(vesa_palette_offs);
494
495 bits = 8 - bits;
496 mtx_lock(&vesa_lock);
497 for (i = 0; i < colors; ++i) {
498 vesa_palette[i * 4] = b[i] >> bits;
499 vesa_palette[i * 4 + 1] = g[i] >> bits;
500 vesa_palette[i * 4 + 2] = r[i] >> bits;
501 vesa_palette[i * 4 + 3] = 0;
502 }
503 x86bios_intr(®s, 0x10);
504 mtx_unlock(&vesa_lock);
505
506 return (regs.R_AX != 0x004f);
507 }
508
509 static size_t
vesa_bios_state_buf_size(int state)510 vesa_bios_state_buf_size(int state)
511 {
512 x86regs_t regs;
513
514 x86bios_init_regs(®s);
515 regs.R_AX = 0x4f04;
516 /* regs.R_DL = STATE_SIZE; */
517 regs.R_CX = state;
518
519 x86bios_intr(®s, 0x10);
520
521 if (regs.R_AX != 0x004f)
522 return (0);
523
524 return (regs.R_BX * 64);
525 }
526
527 static int
vesa_bios_save_restore(int code,void * p)528 vesa_bios_save_restore(int code, void *p)
529 {
530 x86regs_t regs;
531
532 if (code != STATE_SAVE && code != STATE_LOAD)
533 return (1);
534
535 x86bios_init_regs(®s);
536 regs.R_AX = 0x4f04;
537 regs.R_DL = code;
538 regs.R_CX = vesa_state;
539
540 regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs);
541 regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs);
542
543 mtx_lock(&vesa_lock);
544 switch (code) {
545 case STATE_SAVE:
546 x86bios_intr(®s, 0x10);
547 if (regs.R_AX == 0x004f)
548 bcopy(vesa_state_buf, p, vesa_state_buf_size);
549 break;
550 case STATE_LOAD:
551 bcopy(p, vesa_state_buf, vesa_state_buf_size);
552 x86bios_intr(®s, 0x10);
553 break;
554 }
555 mtx_unlock(&vesa_lock);
556
557 return (regs.R_AX != 0x004f);
558 }
559
560 #ifdef MODE_TABLE_BROKEN
561 static int
vesa_bios_get_line_length(void)562 vesa_bios_get_line_length(void)
563 {
564 x86regs_t regs;
565
566 x86bios_init_regs(®s);
567 regs.R_AX = 0x4f06;
568 regs.R_BL = 1;
569
570 x86bios_intr(®s, 0x10);
571
572 if (regs.R_AX != 0x004f)
573 return (-1);
574
575 return (regs.R_BX);
576 }
577 #endif
578
579 static int
vesa_bios_set_line_length(int pixel,int * bytes,int * lines)580 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
581 {
582 x86regs_t regs;
583
584 x86bios_init_regs(®s);
585 regs.R_AX = 0x4f06;
586 /* regs.R_BL = 0; */
587 regs.R_CX = pixel;
588
589 x86bios_intr(®s, 0x10);
590
591 #if VESA_DEBUG > 1
592 printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX);
593 #endif
594 if (regs.R_AX != 0x004f)
595 return (-1);
596
597 if (bytes != NULL)
598 *bytes = regs.R_BX;
599 if (lines != NULL)
600 *lines = regs.R_DX;
601
602 return (0);
603 }
604
605 #if 0
606 static int
607 vesa_bios_get_start(int *x, int *y)
608 {
609 x86regs_t regs;
610
611 x86bios_init_regs(®s);
612 regs.R_AX = 0x4f07;
613 regs.R_BL = 1;
614
615 x86bios_intr(®s, 0x10);
616
617 if (regs.R_AX != 0x004f)
618 return (-1);
619
620 *x = regs.R_CX;
621 *y = regs.R_DX;
622
623 return (0);
624 }
625 #endif
626
627 static int
vesa_bios_set_start(int x,int y)628 vesa_bios_set_start(int x, int y)
629 {
630 x86regs_t regs;
631
632 x86bios_init_regs(®s);
633 regs.R_AX = 0x4f07;
634 regs.R_BL = 0x80;
635 regs.R_CX = x;
636 regs.R_DX = y;
637
638 x86bios_intr(®s, 0x10);
639
640 return (regs.R_AX != 0x004f);
641 }
642
643 /* map a generic video mode to a known mode */
644 static int
vesa_map_gen_mode_num(int type,int color,int mode)645 vesa_map_gen_mode_num(int type, int color, int mode)
646 {
647 static struct {
648 int from;
649 int to;
650 } mode_map[] = {
651 { M_TEXT_132x25, M_VESA_C132x25 },
652 { M_TEXT_132x43, M_VESA_C132x43 },
653 { M_TEXT_132x50, M_VESA_C132x50 },
654 { M_TEXT_132x60, M_VESA_C132x60 },
655 };
656 int i;
657
658 for (i = 0; i < nitems(mode_map); ++i) {
659 if (mode_map[i].from == mode)
660 return (mode_map[i].to);
661 }
662 return (mode);
663 }
664
665 static int
vesa_translate_flags(u_int16_t vflags)666 vesa_translate_flags(u_int16_t vflags)
667 {
668 static struct {
669 u_int16_t mask;
670 int set;
671 int reset;
672 } ftable[] = {
673 { V_MODECOLOR, V_INFO_COLOR, 0 },
674 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
675 { V_MODELFB, V_INFO_LINEAR, 0 },
676 { V_MODENONVGA, V_INFO_NONVGA, 0 },
677 };
678 int flags;
679 int i;
680
681 for (flags = 0, i = 0; i < nitems(ftable); ++i) {
682 flags |= (vflags & ftable[i].mask) ?
683 ftable[i].set : ftable[i].reset;
684 }
685 return (flags);
686 }
687
688 static int
vesa_translate_mmodel(u_int8_t vmodel)689 vesa_translate_mmodel(u_int8_t vmodel)
690 {
691 static struct {
692 u_int8_t vmodel;
693 int mmodel;
694 } mtable[] = {
695 { V_MMTEXT, V_INFO_MM_TEXT },
696 { V_MMCGA, V_INFO_MM_CGA },
697 { V_MMHGC, V_INFO_MM_HGC },
698 { V_MMEGA, V_INFO_MM_PLANAR },
699 { V_MMPACKED, V_INFO_MM_PACKED },
700 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
701 };
702 int i;
703
704 for (i = 0; mtable[i].mmodel >= 0; ++i) {
705 if (mtable[i].vmodel == vmodel)
706 return (mtable[i].mmodel);
707 }
708 return (V_INFO_MM_OTHER);
709 }
710
711 static int
vesa_get_bpscanline(struct vesa_mode * vmode)712 vesa_get_bpscanline(struct vesa_mode *vmode)
713 {
714 int bpsl;
715
716 if ((vmode->v_modeattr & V_MODEGRAPHICS) != 0) {
717 /* Find the minimum length. */
718 switch (vmode->v_bpp / vmode->v_planes) {
719 case 1:
720 bpsl = vmode->v_width / 8;
721 break;
722 case 2:
723 bpsl = vmode->v_width / 4;
724 break;
725 case 4:
726 bpsl = vmode->v_width / 2;
727 break;
728 default:
729 bpsl = vmode->v_width * ((vmode->v_bpp + 7) / 8);
730 bpsl /= vmode->v_planes;
731 break;
732 }
733
734 /* Use VBE 3.0 information if it looks sane. */
735 if ((vmode->v_modeattr & V_MODELFB) != 0 &&
736 vesa_adp_info->v_version >= 0x0300 &&
737 vmode->v_linbpscanline > bpsl)
738 return (vmode->v_linbpscanline);
739
740 /* Return the minimum if the mode table looks absurd. */
741 if (vmode->v_bpscanline < bpsl)
742 return (bpsl);
743 }
744
745 return (vmode->v_bpscanline);
746 }
747
748 #define VESA_MAXSTR 256
749
750 #define VESA_STRCPY(dst, src) do { \
751 char *str; \
752 int i; \
753 dst = malloc(VESA_MAXSTR, M_DEVBUF, M_WAITOK); \
754 str = x86bios_offset(BIOS_SADDRTOLADDR(src)); \
755 for (i = 0; i < VESA_MAXSTR - 1 && str[i] != '\0'; i++) \
756 dst[i] = str[i]; \
757 dst[i] = '\0'; \
758 } while (0)
759
760 static int
vesa_bios_init(void)761 vesa_bios_init(void)
762 {
763 struct vesa_mode vmode;
764 struct vesa_info *buf;
765 video_info_t *p;
766 x86regs_t regs;
767 size_t bsize;
768 size_t msize;
769 void *vmbuf;
770 uint8_t *vbios;
771 uint32_t offs;
772 uint16_t vers;
773 int is_via_cle266;
774 int modes;
775 int i;
776
777 if (vesa_init_done)
778 return (0);
779
780 vesa_bios_offs = VESA_BIOS_OFFSET;
781
782 /*
783 * If the VBE real mode interrupt vector is not found, try BIOS POST.
784 */
785 vesa_bios_int10 = x86bios_get_intr(0x10);
786 if (vesa_bios_int10 == 0) {
787 if (vesa_bios_post() != 0)
788 return (1);
789 vesa_bios_int10 = x86bios_get_intr(0x10);
790 if (vesa_bios_int10 == 0)
791 return (1);
792 }
793
794 /*
795 * Shadow video ROM.
796 */
797 offs = vesa_bios_int10;
798 if (vesa_shadow_rom) {
799 vbios = x86bios_get_orm(vesa_bios_offs);
800 if (vbios != NULL) {
801 vesa_bios_size = vbios[2] * 512;
802 if (((VESA_BIOS_OFFSET << 12) & 0xffff0000) ==
803 (vesa_bios_int10 & 0xffff0000) &&
804 vesa_bios_size > (vesa_bios_int10 & 0xffff)) {
805 vesa_bios = x86bios_alloc(&vesa_bios_offs,
806 vesa_bios_size, M_WAITOK);
807 bcopy(vbios, vesa_bios, vesa_bios_size);
808 offs = ((vesa_bios_offs << 12) & 0xffff0000) +
809 (vesa_bios_int10 & 0xffff);
810 x86bios_set_intr(0x10, offs);
811 }
812 }
813 if (vesa_bios == NULL)
814 printf("VESA: failed to shadow video ROM\n");
815 }
816 if (bootverbose)
817 printf("VESA: INT 0x10 vector 0x%04x:0x%04x\n",
818 (offs >> 16) & 0xffff, offs & 0xffff);
819
820 x86bios_init_regs(®s);
821 regs.R_AX = 0x4f00;
822
823 vmbuf = x86bios_alloc(&offs, sizeof(*buf), M_WAITOK);
824
825 regs.R_ES = X86BIOS_PHYSTOSEG(offs);
826 regs.R_DI = X86BIOS_PHYSTOOFF(offs);
827
828 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
829 x86bios_intr(®s, 0x10);
830
831 if (regs.R_AX != 0x004f || bcmp("VESA", vmbuf, 4) != 0)
832 goto fail;
833
834 vesa_adp_info = buf = malloc(sizeof(*buf), M_DEVBUF, M_WAITOK);
835 bcopy(vmbuf, buf, sizeof(*buf));
836
837 if (bootverbose) {
838 printf("VESA: information block\n");
839 hexdump(buf, sizeof(*buf), NULL, HD_OMIT_CHARS);
840 }
841
842 vers = buf->v_version = le16toh(buf->v_version);
843 buf->v_oemstr = le32toh(buf->v_oemstr);
844 buf->v_flags = le32toh(buf->v_flags);
845 buf->v_modetable = le32toh(buf->v_modetable);
846 buf->v_memsize = le16toh(buf->v_memsize);
847 buf->v_revision = le16toh(buf->v_revision);
848 buf->v_venderstr = le32toh(buf->v_venderstr);
849 buf->v_prodstr = le32toh(buf->v_prodstr);
850 buf->v_revstr = le32toh(buf->v_revstr);
851
852 if (vers < 0x0102) {
853 printf("VESA: VBE version %d.%d is not supported; "
854 "version 1.2 or later is required.\n",
855 ((vers & 0xf000) >> 12) * 10 + ((vers & 0x0f00) >> 8),
856 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f));
857 goto fail;
858 }
859
860 VESA_STRCPY(vesa_oemstr, buf->v_oemstr);
861 if (vers >= 0x0200) {
862 VESA_STRCPY(vesa_venderstr, buf->v_venderstr);
863 VESA_STRCPY(vesa_prodstr, buf->v_prodstr);
864 VESA_STRCPY(vesa_revstr, buf->v_revstr);
865 }
866 is_via_cle266 = strncmp(vesa_oemstr, VESA_VIA_CLE266,
867 sizeof(VESA_VIA_CLE266)) == 0;
868
869 if (buf->v_modetable == 0)
870 goto fail;
871
872 msize = (size_t)buf->v_memsize * 64 * 1024;
873
874 vesa_vmodetab = x86bios_offset(BIOS_SADDRTOLADDR(buf->v_modetable));
875
876 for (i = 0, modes = 0; (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1)) &&
877 (vesa_vmodetab[i] != 0xffff); ++i) {
878 vesa_vmodetab[i] = le16toh(vesa_vmodetab[i]);
879 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_WAITOK))
880 continue;
881
882 vmode.v_modeattr = le16toh(vmode.v_modeattr);
883 vmode.v_wgran = le16toh(vmode.v_wgran);
884 vmode.v_wsize = le16toh(vmode.v_wsize);
885 vmode.v_waseg = le16toh(vmode.v_waseg);
886 vmode.v_wbseg = le16toh(vmode.v_wbseg);
887 vmode.v_posfunc = le32toh(vmode.v_posfunc);
888 vmode.v_bpscanline = le16toh(vmode.v_bpscanline);
889 vmode.v_width = le16toh(vmode.v_width);
890 vmode.v_height = le16toh(vmode.v_height);
891 vmode.v_lfb = le32toh(vmode.v_lfb);
892 vmode.v_offscreen = le32toh(vmode.v_offscreen);
893 vmode.v_offscreensize = le16toh(vmode.v_offscreensize);
894 vmode.v_linbpscanline = le16toh(vmode.v_linbpscanline);
895 vmode.v_maxpixelclock = le32toh(vmode.v_maxpixelclock);
896
897 /* reject unsupported modes */
898 #if 0
899 if ((vmode.v_modeattr &
900 (V_MODESUPP | V_MODEOPTINFO | V_MODENONVGA)) !=
901 (V_MODESUPP | V_MODEOPTINFO))
902 continue;
903 #else
904 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
905 #if VESA_DEBUG > 1
906 printf("Rejecting VESA %s mode: %d x %d x %d bpp "
907 " attr = %x\n",
908 vmode.v_modeattr & V_MODEGRAPHICS ?
909 "graphics" : "text",
910 vmode.v_width, vmode.v_height, vmode.v_bpp,
911 vmode.v_modeattr);
912 #endif
913 continue;
914 }
915 #endif
916
917 bsize = vesa_get_bpscanline(&vmode) * vmode.v_height;
918 if ((vmode.v_modeattr & V_MODEGRAPHICS) != 0)
919 bsize *= vmode.v_planes;
920
921 /* Does it have enough memory to support this mode? */
922 if (msize < bsize) {
923 #if VESA_DEBUG > 1
924 printf("Rejecting VESA %s mode: %d x %d x %d bpp "
925 " attr = %x, not enough memory\n",
926 vmode.v_modeattr & V_MODEGRAPHICS ?
927 "graphics" : "text",
928 vmode.v_width, vmode.v_height, vmode.v_bpp,
929 vmode.v_modeattr);
930 #endif
931 continue;
932 }
933 if (bsize > vesa_vmem_max)
934 vesa_vmem_max = bsize;
935
936 /* expand the array if necessary */
937 if (modes >= vesa_vmode_max) {
938 vesa_vmode_max += MODE_TABLE_DELTA;
939 p = malloc(sizeof(*vesa_vmode) * (vesa_vmode_max + 1),
940 M_DEVBUF, M_WAITOK);
941 #if VESA_DEBUG > 1
942 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
943 modes, vesa_vmode_max);
944 #endif
945 if (modes > 0) {
946 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
947 free(vesa_vmode, M_DEVBUF);
948 }
949 vesa_vmode = p;
950 }
951
952 #if VESA_DEBUG > 1
953 printf("Found VESA %s mode: %d x %d x %d bpp\n",
954 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
955 vmode.v_width, vmode.v_height, vmode.v_bpp);
956 #endif
957 if (is_via_cle266) {
958 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
959 vmode.v_width &= 0xff;
960 vmode.v_waseg = 0xb8000 >> 4;
961 }
962 }
963
964 /* copy some fields */
965 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
966 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
967 vesa_vmode[modes].vi_width = vmode.v_width;
968 vesa_vmode[modes].vi_height = vmode.v_height;
969 vesa_vmode[modes].vi_depth = vmode.v_bpp;
970 vesa_vmode[modes].vi_planes = vmode.v_planes;
971 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
972 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
973 vesa_vmode[modes].vi_window = (vm_offset_t)vmode.v_waseg << 4;
974 /* XXX window B */
975 vesa_vmode[modes].vi_window_size = vmode.v_wsize * 1024;
976 vesa_vmode[modes].vi_window_gran = vmode.v_wgran * 1024;
977 if (vmode.v_modeattr & V_MODELFB)
978 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
979 vesa_vmode[modes].vi_buffer_size = bsize;
980 vesa_vmode[modes].vi_mem_model =
981 vesa_translate_mmodel(vmode.v_memmodel);
982 switch (vesa_vmode[modes].vi_mem_model) {
983 case V_INFO_MM_DIRECT:
984 if ((vmode.v_modeattr & V_MODELFB) != 0 &&
985 vers >= 0x0300) {
986 vesa_vmode[modes].vi_pixel_fields[0] =
987 vmode.v_linredfieldpos;
988 vesa_vmode[modes].vi_pixel_fields[1] =
989 vmode.v_lingreenfieldpos;
990 vesa_vmode[modes].vi_pixel_fields[2] =
991 vmode.v_linbluefieldpos;
992 vesa_vmode[modes].vi_pixel_fields[3] =
993 vmode.v_linresfieldpos;
994 vesa_vmode[modes].vi_pixel_fsizes[0] =
995 vmode.v_linredmasksize;
996 vesa_vmode[modes].vi_pixel_fsizes[1] =
997 vmode.v_lingreenmasksize;
998 vesa_vmode[modes].vi_pixel_fsizes[2] =
999 vmode.v_linbluemasksize;
1000 vesa_vmode[modes].vi_pixel_fsizes[3] =
1001 vmode.v_linresmasksize;
1002 } else {
1003 vesa_vmode[modes].vi_pixel_fields[0] =
1004 vmode.v_redfieldpos;
1005 vesa_vmode[modes].vi_pixel_fields[1] =
1006 vmode.v_greenfieldpos;
1007 vesa_vmode[modes].vi_pixel_fields[2] =
1008 vmode.v_bluefieldpos;
1009 vesa_vmode[modes].vi_pixel_fields[3] =
1010 vmode.v_resfieldpos;
1011 vesa_vmode[modes].vi_pixel_fsizes[0] =
1012 vmode.v_redmasksize;
1013 vesa_vmode[modes].vi_pixel_fsizes[1] =
1014 vmode.v_greenmasksize;
1015 vesa_vmode[modes].vi_pixel_fsizes[2] =
1016 vmode.v_bluemasksize;
1017 vesa_vmode[modes].vi_pixel_fsizes[3] =
1018 vmode.v_resmasksize;
1019 }
1020 /* FALLTHROUGH */
1021 case V_INFO_MM_PACKED:
1022 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7) / 8;
1023 break;
1024 }
1025 vesa_vmode[modes].vi_flags =
1026 vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
1027
1028 ++modes;
1029 }
1030 if (vesa_vmode != NULL)
1031 vesa_vmode[modes].vi_mode = EOT;
1032
1033 if (bootverbose)
1034 printf("VESA: %d mode(s) found\n", modes);
1035
1036 if (modes == 0)
1037 goto fail;
1038
1039 x86bios_free(vmbuf, sizeof(*buf));
1040
1041 /* Probe supported save/restore states. */
1042 for (i = 0; i < 4; i++)
1043 if (vesa_bios_state_buf_size(1 << i) > 0)
1044 vesa_state |= 1 << i;
1045 if (vesa_state != 0)
1046 vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state);
1047 vesa_palette = x86bios_alloc(&vesa_palette_offs,
1048 VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK);
1049 if (vesa_state_buf_size > 0) {
1050 vesa_state_buf = vesa_palette + VESA_PALETTE_SIZE;
1051 vesa_state_buf_offs = vesa_palette_offs + VESA_PALETTE_SIZE;
1052 }
1053
1054 return (0);
1055
1056 fail:
1057 x86bios_free(vmbuf, sizeof(buf));
1058 vesa_bios_uninit();
1059 return (1);
1060 }
1061
1062 static void
vesa_bios_uninit(void)1063 vesa_bios_uninit(void)
1064 {
1065
1066 if (vesa_bios != NULL) {
1067 x86bios_set_intr(0x10, vesa_bios_int10);
1068 vesa_bios_offs = VESA_BIOS_OFFSET;
1069 x86bios_free(vesa_bios, vesa_bios_size);
1070 vesa_bios = NULL;
1071 }
1072 if (vesa_adp_info != NULL) {
1073 free(vesa_adp_info, M_DEVBUF);
1074 vesa_adp_info = NULL;
1075 }
1076 if (vesa_oemstr != NULL) {
1077 free(vesa_oemstr, M_DEVBUF);
1078 vesa_oemstr = NULL;
1079 }
1080 if (vesa_venderstr != NULL) {
1081 free(vesa_venderstr, M_DEVBUF);
1082 vesa_venderstr = NULL;
1083 }
1084 if (vesa_prodstr != NULL) {
1085 free(vesa_prodstr, M_DEVBUF);
1086 vesa_prodstr = NULL;
1087 }
1088 if (vesa_revstr != NULL) {
1089 free(vesa_revstr, M_DEVBUF);
1090 vesa_revstr = NULL;
1091 }
1092 if (vesa_vmode != NULL) {
1093 free(vesa_vmode, M_DEVBUF);
1094 vesa_vmode = NULL;
1095 }
1096 if (vesa_palette != NULL) {
1097 x86bios_free(vesa_palette,
1098 VESA_PALETTE_SIZE + vesa_state_buf_size);
1099 vesa_palette = NULL;
1100 }
1101 }
1102
1103 static void
vesa_clear_modes(video_info_t * info,int color)1104 vesa_clear_modes(video_info_t *info, int color)
1105 {
1106 while (info->vi_mode != EOT) {
1107 if ((info->vi_flags & V_INFO_COLOR) != color)
1108 info->vi_mode = NA;
1109 ++info;
1110 }
1111 }
1112
1113 /* entry points */
1114
1115 static int
vesa_configure(int flags)1116 vesa_configure(int flags)
1117 {
1118 video_adapter_t *adp;
1119 int adapters;
1120 int error;
1121 int i;
1122
1123 if (vesa_init_done)
1124 return (0);
1125 if (flags & VIO_PROBE_ONLY)
1126 return (0);
1127
1128 /*
1129 * If the VESA module has already been loaded, abort loading
1130 * the module this time.
1131 */
1132 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
1133 if (adp->va_flags & V_ADP_VESA)
1134 return (ENXIO);
1135 if (adp->va_type == KD_VGA)
1136 break;
1137 }
1138
1139 /*
1140 * The VGA adapter is not found. This is because either
1141 * 1) the VGA driver has not been initialized, or 2) the VGA card
1142 * is not present. If 1) is the case, we shall defer
1143 * initialization for now and try again later.
1144 */
1145 if (adp == NULL) {
1146 vga_sub_configure = vesa_configure;
1147 return (ENODEV);
1148 }
1149
1150 /* count number of registered adapters */
1151 for (++i; vid_get_adapter(i) != NULL; ++i)
1152 ;
1153 adapters = i;
1154
1155 /* call VESA BIOS */
1156 vesa_adp = adp;
1157 if (vesa_bios_init()) {
1158 vesa_adp = NULL;
1159 return (ENXIO);
1160 }
1161 vesa_adp->va_flags |= V_ADP_VESA;
1162
1163 /* remove conflicting modes if we have more than one adapter */
1164 if (adapters > 1) {
1165 vesa_clear_modes(vesa_vmode,
1166 (vesa_adp->va_flags & V_ADP_COLOR) ?
1167 V_INFO_COLOR : 0);
1168 }
1169
1170 if ((error = vesa_load_ioctl()) == 0) {
1171 prevvidsw = vidsw[vesa_adp->va_index];
1172 vidsw[vesa_adp->va_index] = &vesavidsw;
1173 vesa_init_done = TRUE;
1174 } else {
1175 vesa_adp = NULL;
1176 return (error);
1177 }
1178
1179 return (0);
1180 }
1181
1182 #if 0
1183 static int
1184 vesa_nop(void)
1185 {
1186
1187 return (0);
1188 }
1189 #endif
1190
1191 static int
vesa_error(void)1192 vesa_error(void)
1193 {
1194
1195 return (1);
1196 }
1197
1198 static int
vesa_probe(int unit,video_adapter_t ** adpp,void * arg,int flags)1199 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1200 {
1201
1202 return ((*prevvidsw->probe)(unit, adpp, arg, flags));
1203 }
1204
1205 static int
vesa_init(int unit,video_adapter_t * adp,int flags)1206 vesa_init(int unit, video_adapter_t *adp, int flags)
1207 {
1208
1209 return ((*prevvidsw->init)(unit, adp, flags));
1210 }
1211
1212 static int
vesa_get_info(video_adapter_t * adp,int mode,video_info_t * info)1213 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1214 {
1215 int i;
1216
1217 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
1218 return (0);
1219
1220 if (adp != vesa_adp)
1221 return (1);
1222
1223 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
1224 vesa_adp->va_flags & V_ADP_COLOR, mode);
1225 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
1226 if (vesa_vmode[i].vi_mode == NA)
1227 continue;
1228 if (vesa_vmode[i].vi_mode == mode) {
1229 *info = vesa_vmode[i];
1230 return (0);
1231 }
1232 }
1233 return (1);
1234 }
1235
1236 static int
vesa_query_mode(video_adapter_t * adp,video_info_t * info)1237 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
1238 {
1239 int i;
1240
1241 if ((*prevvidsw->query_mode)(adp, info) == 0)
1242 return (0);
1243 if (adp != vesa_adp)
1244 return (ENODEV);
1245
1246 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
1247 if ((info->vi_width != 0)
1248 && (info->vi_width != vesa_vmode[i].vi_width))
1249 continue;
1250 if ((info->vi_height != 0)
1251 && (info->vi_height != vesa_vmode[i].vi_height))
1252 continue;
1253 if ((info->vi_cwidth != 0)
1254 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
1255 continue;
1256 if ((info->vi_cheight != 0)
1257 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
1258 continue;
1259 if ((info->vi_depth != 0)
1260 && (info->vi_depth != vesa_vmode[i].vi_depth))
1261 continue;
1262 if ((info->vi_planes != 0)
1263 && (info->vi_planes != vesa_vmode[i].vi_planes))
1264 continue;
1265 /* pixel format, memory model */
1266 if ((info->vi_flags != 0)
1267 && (info->vi_flags != vesa_vmode[i].vi_flags))
1268 continue;
1269 *info = vesa_vmode[i];
1270 return (0);
1271 }
1272 return (ENODEV);
1273 }
1274
1275 static int
vesa_set_mode(video_adapter_t * adp,int mode)1276 vesa_set_mode(video_adapter_t *adp, int mode)
1277 {
1278 video_info_t info;
1279
1280 if (adp != vesa_adp)
1281 return ((*prevvidsw->set_mode)(adp, mode));
1282
1283 mode = vesa_map_gen_mode_num(adp->va_type,
1284 adp->va_flags & V_ADP_COLOR, mode);
1285 #if VESA_DEBUG > 0
1286 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
1287 adp->va_mode, adp->va_mode, mode, mode);
1288 #endif
1289 /*
1290 * If the current mode is a VESA mode and the new mode is not,
1291 * restore the state of the adapter first by setting one of the
1292 * standard VGA mode, so that non-standard, extended SVGA registers
1293 * are set to the state compatible with the standard VGA modes.
1294 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1295 * the new mode correctly.
1296 */
1297 if (VESA_MODE(adp->va_mode)) {
1298 if (!VESA_MODE(mode) &&
1299 (*prevvidsw->get_info)(adp, mode, &info) == 0) {
1300 if ((adp->va_flags & V_ADP_DAC8) != 0) {
1301 vesa_bios_set_dac(6);
1302 adp->va_flags &= ~V_ADP_DAC8;
1303 }
1304 int10_set_mode(adp->va_initial_bios_mode);
1305 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1306 pmap_unmapdev((void *)adp->va_buffer,
1307 vesa_vmem_max);
1308 /*
1309 * Once (*prevvidsw->get_info)() succeeded,
1310 * (*prevvidsw->set_mode)() below won't fail...
1311 */
1312 }
1313 }
1314
1315 /* we may not need to handle this mode after all... */
1316 if (!VESA_MODE(mode) && (*prevvidsw->set_mode)(adp, mode) == 0)
1317 return (0);
1318
1319 /* is the new mode supported? */
1320 if (vesa_get_info(adp, mode, &info))
1321 return (1);
1322 /* assert(VESA_MODE(mode)); */
1323
1324 #if VESA_DEBUG > 0
1325 printf("VESA: about to set a VESA mode...\n");
1326 #endif
1327 /*
1328 * The mode change should reset the palette format to 6 bits, so
1329 * we must reset V_ADP_DAC8. Some BIOSes do an incomplete reset
1330 * if we call them with an 8-bit palette, so reset directly.
1331 */
1332 if (adp->va_flags & V_ADP_DAC8) {
1333 vesa_bios_set_dac(6);
1334 adp->va_flags &= ~V_ADP_DAC8;
1335 }
1336
1337 /* don't use the linear frame buffer for text modes. XXX */
1338 if (!(info.vi_flags & V_INFO_GRAPHICS))
1339 info.vi_flags &= ~V_INFO_LINEAR;
1340
1341 if ((info.vi_flags & V_INFO_LINEAR) != 0)
1342 mode |= 0x4000;
1343 if (vesa_bios_set_mode(mode | 0x8000))
1344 return (1);
1345
1346 if ((vesa_adp_info->v_flags & V_DAC8) != 0 &&
1347 (info.vi_flags & V_INFO_GRAPHICS) != 0 &&
1348 vesa_bios_set_dac(8) > 6)
1349 adp->va_flags |= V_ADP_DAC8;
1350
1351 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1352 pmap_unmapdev((void *)adp->va_buffer, vesa_vmem_max);
1353
1354 #if VESA_DEBUG > 0
1355 printf("VESA: mode set!\n");
1356 #endif
1357 vesa_adp->va_mode = mode & 0x1ff; /* Mode number is 9-bit. */
1358 vesa_adp->va_flags &= ~V_ADP_COLOR;
1359 vesa_adp->va_flags |=
1360 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1361 vesa_adp->va_crtc_addr =
1362 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1363
1364 vesa_adp->va_flags &= ~V_ADP_CWIDTH9;
1365 vesa_adp->va_line_width = info.vi_buffer_size / info.vi_height;
1366 if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
1367 vesa_adp->va_line_width /= info.vi_planes;
1368
1369 #ifdef MODE_TABLE_BROKEN
1370 /* If VBE function returns bigger bytes per scan line, use it. */
1371 {
1372 int bpsl = vesa_bios_get_line_length();
1373 if (bpsl > vesa_adp->va_line_width) {
1374 vesa_adp->va_line_width = bpsl;
1375 info.vi_buffer_size = bpsl * info.vi_height;
1376 if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
1377 info.vi_buffer_size *= info.vi_planes;
1378 }
1379 }
1380 #endif
1381
1382 if (info.vi_flags & V_INFO_LINEAR) {
1383 #if VESA_DEBUG > 1
1384 printf("VESA: setting up LFB\n");
1385 #endif
1386 vesa_adp->va_buffer =
1387 (vm_offset_t)pmap_mapdev_attr(info.vi_buffer,
1388 vesa_vmem_max, PAT_WRITE_COMBINING);
1389 vesa_adp->va_window = vesa_adp->va_buffer;
1390 vesa_adp->va_window_size = info.vi_buffer_size / info.vi_planes;
1391 vesa_adp->va_window_gran = info.vi_buffer_size / info.vi_planes;
1392 } else {
1393 vesa_adp->va_buffer = 0;
1394 vesa_adp->va_window = (vm_offset_t)x86bios_offset(info.vi_window);
1395 vesa_adp->va_window_size = info.vi_window_size;
1396 vesa_adp->va_window_gran = info.vi_window_gran;
1397 }
1398 vesa_adp->va_buffer_size = info.vi_buffer_size;
1399 vesa_adp->va_window_orig = 0;
1400 vesa_adp->va_disp_start.x = 0;
1401 vesa_adp->va_disp_start.y = 0;
1402 #if VESA_DEBUG > 0
1403 printf("vesa_set_mode(): vi_width:%d, line_width:%d\n",
1404 info.vi_width, vesa_adp->va_line_width);
1405 #endif
1406 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1407
1408 /* move hardware cursor out of the way */
1409 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1410
1411 return (0);
1412 }
1413
1414 static int
vesa_save_font(video_adapter_t * adp,int page,int fontsize,int fontwidth,u_char * data,int ch,int count)1415 vesa_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1416 u_char *data, int ch, int count)
1417 {
1418
1419 return ((*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data,
1420 ch, count));
1421 }
1422
1423 static int
vesa_load_font(video_adapter_t * adp,int page,int fontsize,int fontwidth,u_char * data,int ch,int count)1424 vesa_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1425 u_char *data, int ch, int count)
1426 {
1427
1428 return ((*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data,
1429 ch, count));
1430 }
1431
1432 static int
vesa_show_font(video_adapter_t * adp,int page)1433 vesa_show_font(video_adapter_t *adp, int page)
1434 {
1435
1436 return ((*prevvidsw->show_font)(adp, page));
1437 }
1438
1439 static int
vesa_save_palette(video_adapter_t * adp,u_char * palette)1440 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1441 {
1442 int bits;
1443
1444 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) {
1445 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1446 if (vesa_bios_save_palette(0, 256, palette, bits) == 0)
1447 return (0);
1448 }
1449
1450 return ((*prevvidsw->save_palette)(adp, palette));
1451 }
1452
1453 static int
vesa_load_palette(video_adapter_t * adp,u_char * palette)1454 vesa_load_palette(video_adapter_t *adp, u_char *palette)
1455 {
1456 int bits;
1457
1458 if (adp == vesa_adp && VESA_MODE(adp->va_mode)) {
1459 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1460 if (vesa_bios_load_palette(0, 256, palette, bits) == 0)
1461 return (0);
1462 }
1463
1464 return ((*prevvidsw->load_palette)(adp, palette));
1465 }
1466
1467 static int
vesa_set_border(video_adapter_t * adp,int color)1468 vesa_set_border(video_adapter_t *adp, int color)
1469 {
1470
1471 return ((*prevvidsw->set_border)(adp, color));
1472 }
1473
1474 static int
vesa_save_state(video_adapter_t * adp,void * p,size_t size)1475 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1476 {
1477 void *buf;
1478 size_t bsize;
1479
1480 if (adp != vesa_adp || (size == 0 && vesa_state_buf_size == 0))
1481 return ((*prevvidsw->save_state)(adp, p, size));
1482
1483 bsize = offsetof(adp_state_t, regs) + vesa_state_buf_size;
1484 if (size == 0)
1485 return (bsize);
1486 if (vesa_state_buf_size > 0 && size < bsize)
1487 return (EINVAL);
1488
1489 if (vesa_vmem_buf != NULL) {
1490 free(vesa_vmem_buf, M_DEVBUF);
1491 vesa_vmem_buf = NULL;
1492 }
1493 if (VESA_MODE(adp->va_mode)) {
1494 buf = (void *)adp->va_buffer;
1495 if (buf != NULL) {
1496 bsize = adp->va_buffer_size;
1497 vesa_vmem_buf = malloc(bsize, M_DEVBUF, M_NOWAIT);
1498 if (vesa_vmem_buf != NULL)
1499 bcopy(buf, vesa_vmem_buf, bsize);
1500 }
1501 }
1502 if (vesa_state_buf_size == 0)
1503 return ((*prevvidsw->save_state)(adp, p, size));
1504 ((adp_state_t *)p)->sig = V_STATE_SIG;
1505 return (vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs));
1506 }
1507
1508 static int
vesa_load_state(video_adapter_t * adp,void * p)1509 vesa_load_state(video_adapter_t *adp, void *p)
1510 {
1511 void *buf;
1512 size_t bsize;
1513 int error, mode;
1514
1515 if (adp != vesa_adp)
1516 return ((*prevvidsw->load_state)(adp, p));
1517
1518 /* Try BIOS POST to restore a sane state. */
1519 (void)vesa_bios_post();
1520 bsize = adp->va_buffer_size;
1521 mode = adp->va_mode;
1522 error = vesa_set_mode(adp, adp->va_initial_mode);
1523 if (mode != adp->va_initial_mode)
1524 error = vesa_set_mode(adp, mode);
1525
1526 if (vesa_vmem_buf != NULL) {
1527 if (error == 0 && VESA_MODE(mode)) {
1528 buf = (void *)adp->va_buffer;
1529 if (buf != NULL)
1530 bcopy(vesa_vmem_buf, buf, bsize);
1531 }
1532 free(vesa_vmem_buf, M_DEVBUF);
1533 vesa_vmem_buf = NULL;
1534 }
1535 if (((adp_state_t *)p)->sig != V_STATE_SIG)
1536 return ((*prevvidsw->load_state)(adp, p));
1537 return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs));
1538 }
1539
1540 #if 0
1541 static int
1542 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1543 {
1544 x86regs_t regs;
1545
1546 x86bios_init_regs(®s);
1547 regs.R_AX = 0x4f05;
1548 regs.R_BL = 0x10;
1549
1550 x86bios_intr(®s, 0x10);
1551
1552 if (regs.R_AX != 0x004f)
1553 return (1);
1554 *offset = regs.DX * adp->va_window_gran;
1555
1556 return (0);
1557 }
1558 #endif
1559
1560 static int
vesa_set_origin(video_adapter_t * adp,off_t offset)1561 vesa_set_origin(video_adapter_t *adp, off_t offset)
1562 {
1563 x86regs_t regs;
1564
1565 /*
1566 * This function should return as quickly as possible to
1567 * maintain good performance of the system. For this reason,
1568 * error checking is kept minimal and let the VESA BIOS to
1569 * detect error.
1570 */
1571 if (adp != vesa_adp)
1572 return ((*prevvidsw->set_win_org)(adp, offset));
1573
1574 /* if this is a linear frame buffer, do nothing */
1575 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1576 return (0);
1577 /* XXX */
1578 if (adp->va_window_gran == 0)
1579 return (1);
1580
1581 x86bios_init_regs(®s);
1582 regs.R_AX = 0x4f05;
1583 regs.R_DX = offset / adp->va_window_gran;
1584
1585 x86bios_intr(®s, 0x10);
1586
1587 if (regs.R_AX != 0x004f)
1588 return (1);
1589
1590 x86bios_init_regs(®s);
1591 regs.R_AX = 0x4f05;
1592 regs.R_BL = 1;
1593 regs.R_DX = offset / adp->va_window_gran;
1594 x86bios_intr(®s, 0x10);
1595
1596 adp->va_window_orig = rounddown(offset, adp->va_window_gran);
1597 return (0); /* XXX */
1598 }
1599
1600 static int
vesa_read_hw_cursor(video_adapter_t * adp,int * col,int * row)1601 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1602 {
1603
1604 return ((*prevvidsw->read_hw_cursor)(adp, col, row));
1605 }
1606
1607 static int
vesa_set_hw_cursor(video_adapter_t * adp,int col,int row)1608 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1609 {
1610
1611 return ((*prevvidsw->set_hw_cursor)(adp, col, row));
1612 }
1613
1614 static int
vesa_set_hw_cursor_shape(video_adapter_t * adp,int base,int height,int celsize,int blink)1615 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1616 int celsize, int blink)
1617 {
1618
1619 return ((*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1620 blink));
1621 }
1622
1623 static int
vesa_blank_display(video_adapter_t * adp,int mode)1624 vesa_blank_display(video_adapter_t *adp, int mode)
1625 {
1626
1627 /* XXX: use VESA DPMS */
1628 return ((*prevvidsw->blank_display)(adp, mode));
1629 }
1630
1631 static int
vesa_mmap(video_adapter_t * adp,vm_ooffset_t offset,vm_paddr_t * paddr,int prot,vm_memattr_t * memattr)1632 vesa_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
1633 int prot, vm_memattr_t *memattr)
1634 {
1635
1636 #if VESA_DEBUG > 0
1637 printf("vesa_mmap(): window:0x%tx, buffer:0x%tx, offset:0x%jx\n",
1638 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1639 #endif
1640
1641 if ((adp == vesa_adp) &&
1642 (adp->va_info.vi_flags & V_INFO_LINEAR) != 0) {
1643 /* va_window_size == va_buffer_size/vi_planes */
1644 /* XXX: is this correct? */
1645 if (offset > adp->va_window_size - PAGE_SIZE)
1646 return (-1);
1647 *paddr = adp->va_info.vi_buffer + offset;
1648 #ifdef VM_MEMATTR_WRITE_COMBINING
1649 *memattr = VM_MEMATTR_WRITE_COMBINING;
1650 #endif
1651 return (0);
1652 }
1653 return ((*prevvidsw->mmap)(adp, offset, paddr, prot, memattr));
1654 }
1655
1656 static int
vesa_clear(video_adapter_t * adp)1657 vesa_clear(video_adapter_t *adp)
1658 {
1659
1660 return ((*prevvidsw->clear)(adp));
1661 }
1662
1663 static int
vesa_fill_rect(video_adapter_t * adp,int val,int x,int y,int cx,int cy)1664 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1665 {
1666
1667 return ((*prevvidsw->fill_rect)(adp, val, x, y, cx, cy));
1668 }
1669
1670 static int
vesa_bitblt(video_adapter_t * adp,...)1671 vesa_bitblt(video_adapter_t *adp,...)
1672 {
1673
1674 /* FIXME */
1675 return (1);
1676 }
1677
1678 static int
get_palette(video_adapter_t * adp,int base,int count,u_char * red,u_char * green,u_char * blue,u_char * trans)1679 get_palette(video_adapter_t *adp, int base, int count,
1680 u_char *red, u_char *green, u_char *blue, u_char *trans)
1681 {
1682 u_char *r;
1683 u_char *g;
1684 u_char *b;
1685 int bits;
1686 int error;
1687
1688 if (base < 0 || base >= 256 || count < 0 || count > 256)
1689 return (1);
1690 if ((base + count) > 256)
1691 return (1);
1692 if (!VESA_MODE(adp->va_mode))
1693 return (1);
1694
1695 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1696 r = malloc(count * 3, M_DEVBUF, M_WAITOK);
1697 g = r + count;
1698 b = g + count;
1699 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1700 if (error == 0) {
1701 (void)copyout(r, red, count);
1702 (void)copyout(g, green, count);
1703 (void)copyout(b, blue, count);
1704 if (trans != NULL) {
1705 bzero(r, count);
1706 (void)copyout(r, trans, count);
1707 }
1708 }
1709 free(r, M_DEVBUF);
1710
1711 return (error);
1712 }
1713
1714 static int
set_palette(video_adapter_t * adp,int base,int count,u_char * red,u_char * green,u_char * blue,u_char * trans)1715 set_palette(video_adapter_t *adp, int base, int count,
1716 u_char *red, u_char *green, u_char *blue, u_char *trans)
1717 {
1718 u_char *r;
1719 u_char *g;
1720 u_char *b;
1721 int bits;
1722 int error;
1723
1724 if (base < 0 || base >= 256 || count < 0 || count > 256)
1725 return (1);
1726 if ((base + count) > 256)
1727 return (1);
1728 if (!VESA_MODE(adp->va_mode))
1729 return (1);
1730
1731 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 8 : 6;
1732 r = malloc(count * 3, M_DEVBUF, M_WAITOK | M_ZERO);
1733 g = r + count;
1734 b = g + count;
1735 if (copyin(red, r, count) != 0 ||
1736 copyin(green, g, count) != 0 ||
1737 copyin(blue, b, count) != 0) {
1738 error = 1;
1739 goto out;
1740 }
1741
1742 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1743 out:
1744 free(r, M_DEVBUF);
1745
1746 return (error);
1747 }
1748
1749 static int
vesa_ioctl(video_adapter_t * adp,u_long cmd,caddr_t arg)1750 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1751 {
1752 int bytes;
1753
1754 if (adp != vesa_adp)
1755 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1756
1757 switch (cmd) {
1758 case FBIO_SETWINORG: /* set frame buffer window origin */
1759 if (!VESA_MODE(adp->va_mode))
1760 return (*prevvidsw->ioctl)(adp, cmd, arg);
1761 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1762
1763 case FBIO_SETDISPSTART: /* set display start address */
1764 if (!VESA_MODE(adp->va_mode))
1765 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1766 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1767 ((video_display_start_t *)arg)->y))
1768 return (ENODEV);
1769 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1770 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1771 return (0);
1772
1773 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1774 if (!VESA_MODE(adp->va_mode))
1775 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1776 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1777 return (ENODEV);
1778 adp->va_line_width = bytes;
1779 #if VESA_DEBUG > 1
1780 printf("new line width:%d\n", adp->va_line_width);
1781 #endif
1782 return (0);
1783
1784 case FBIO_GETPALETTE: /* get color palette */
1785 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1786 ((video_color_palette_t *)arg)->count,
1787 ((video_color_palette_t *)arg)->red,
1788 ((video_color_palette_t *)arg)->green,
1789 ((video_color_palette_t *)arg)->blue,
1790 ((video_color_palette_t *)arg)->transparent))
1791 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1792 return (0);
1793
1794
1795 case FBIO_SETPALETTE: /* set color palette */
1796 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1797 ((video_color_palette_t *)arg)->count,
1798 ((video_color_palette_t *)arg)->red,
1799 ((video_color_palette_t *)arg)->green,
1800 ((video_color_palette_t *)arg)->blue,
1801 ((video_color_palette_t *)arg)->transparent))
1802 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1803 return (0);
1804
1805 case FBIOGETCMAP: /* get color palette */
1806 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1807 ((struct fbcmap *)arg)->count,
1808 ((struct fbcmap *)arg)->red,
1809 ((struct fbcmap *)arg)->green,
1810 ((struct fbcmap *)arg)->blue, NULL))
1811 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1812 return (0);
1813
1814 case FBIOPUTCMAP: /* set color palette */
1815 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1816 ((struct fbcmap *)arg)->count,
1817 ((struct fbcmap *)arg)->red,
1818 ((struct fbcmap *)arg)->green,
1819 ((struct fbcmap *)arg)->blue, NULL))
1820 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1821 return (0);
1822
1823 default:
1824 return ((*prevvidsw->ioctl)(adp, cmd, arg));
1825 }
1826 }
1827
1828 static int
vesa_diag(video_adapter_t * adp,int level)1829 vesa_diag(video_adapter_t *adp, int level)
1830 {
1831 int error;
1832
1833 /* call the previous handler first */
1834 error = (*prevvidsw->diag)(adp, level);
1835 if (error)
1836 return (error);
1837
1838 if (adp != vesa_adp)
1839 return (1);
1840
1841 if (level <= 0)
1842 return (0);
1843
1844 return (0);
1845 }
1846
1847 static int
vesa_bios_info(int level)1848 vesa_bios_info(int level)
1849 {
1850 #if VESA_DEBUG > 1
1851 struct vesa_mode vmode;
1852 int i;
1853 #endif
1854 uint16_t vers;
1855
1856 vers = vesa_adp_info->v_version;
1857
1858 if (bootverbose) {
1859 /* general adapter information */
1860 printf(
1861 "VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1862 (vers >> 12) * 10 + ((vers & 0x0f00) >> 8),
1863 ((vers & 0x00f0) >> 4) * 10 + (vers & 0x000f),
1864 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1865 vesa_vmodetab, vesa_adp_info->v_modetable);
1866
1867 /* OEM string */
1868 if (vesa_oemstr != NULL)
1869 printf("VESA: %s\n", vesa_oemstr);
1870 }
1871
1872 if (level <= 0)
1873 return (0);
1874
1875 if (vers >= 0x0200 && bootverbose) {
1876 /* vender name, product name, product revision */
1877 printf("VESA: %s %s %s\n",
1878 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
1879 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1880 (vesa_revstr != NULL) ? vesa_revstr : "?");
1881 }
1882
1883 #if VESA_DEBUG > 1
1884 /* mode information */
1885 for (i = 0;
1886 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1887 && (vesa_vmodetab[i] != 0xffff); ++i) {
1888 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode, M_NOWAIT))
1889 continue;
1890
1891 /* print something for diagnostic purpose */
1892 printf("VESA: mode:0x%03x, flags:0x%04x",
1893 vesa_vmodetab[i], vmode.v_modeattr);
1894 if (vmode.v_modeattr & V_MODEOPTINFO) {
1895 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1896 printf(", G %dx%dx%d %d, ",
1897 vmode.v_width, vmode.v_height,
1898 vmode.v_bpp, vmode.v_planes);
1899 } else {
1900 printf(", T %dx%d, ",
1901 vmode.v_width, vmode.v_height);
1902 }
1903 printf("font:%dx%d, ",
1904 vmode.v_cwidth, vmode.v_cheight);
1905 printf("pages:%d, mem:%d",
1906 vmode.v_ipages + 1, vmode.v_memmodel);
1907 }
1908 if (vmode.v_modeattr & V_MODELFB) {
1909 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1910 vmode.v_lfb, vmode.v_offscreen,
1911 vmode.v_offscreensize*1024);
1912 }
1913 printf("\n");
1914 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1915 vmode.v_waseg, vmode.v_waattr,
1916 vmode.v_wbseg, vmode.v_wbattr);
1917 printf("size:%dk, gran:%dk\n",
1918 vmode.v_wsize, vmode.v_wgran);
1919 }
1920 #endif /* VESA_DEBUG > 1 */
1921
1922 return (0);
1923 }
1924
1925 /* module loading */
1926
1927 static int
vesa_load(void)1928 vesa_load(void)
1929 {
1930 int error;
1931
1932 if (vesa_init_done)
1933 return (0);
1934
1935 /* locate a VGA adapter */
1936 vesa_adp = NULL;
1937 error = vesa_configure(0);
1938
1939 if (error == 0)
1940 vesa_bios_info(bootverbose);
1941
1942 /* Don't return ENODEV, the upper layers will whine. */
1943 if (error == ENODEV) {
1944 error = 0;
1945 vesa_adp = NULL;
1946 }
1947
1948 return (error);
1949 }
1950
1951 static int
vesa_unload(void)1952 vesa_unload(void)
1953 {
1954 int error;
1955
1956 /* The driver never initialized, so make it easy to unload. */
1957 if (vesa_adp == NULL)
1958 return (0);
1959
1960 /* if the adapter is currently in a VESA mode, don't unload */
1961 if (VESA_MODE(vesa_adp->va_mode))
1962 return (EBUSY);
1963 /*
1964 * FIXME: if there is at least one vty which is in a VESA mode,
1965 * we shouldn't be unloading! XXX
1966 */
1967
1968 if ((error = vesa_unload_ioctl()) == 0) {
1969 if (vesa_adp != NULL) {
1970 if ((vesa_adp->va_flags & V_ADP_DAC8) != 0) {
1971 vesa_bios_set_dac(6);
1972 vesa_adp->va_flags &= ~V_ADP_DAC8;
1973 }
1974 vesa_adp->va_flags &= ~V_ADP_VESA;
1975 vidsw[vesa_adp->va_index] = prevvidsw;
1976 }
1977 }
1978
1979 vesa_bios_uninit();
1980
1981 return (error);
1982 }
1983
1984 static int
vesa_mod_event(module_t mod,int type,void * data)1985 vesa_mod_event(module_t mod, int type, void *data)
1986 {
1987
1988 switch (type) {
1989 case MOD_LOAD:
1990 return (vesa_load());
1991 case MOD_UNLOAD:
1992 return (vesa_unload());
1993 }
1994 return (EOPNOTSUPP);
1995 }
1996
1997 static moduledata_t vesa_mod = {
1998 "vesa",
1999 vesa_mod_event,
2000 NULL,
2001 };
2002
2003 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
2004 MODULE_DEPEND(vesa, x86bios, 1, 1, 1);
2005
2006 #endif /* VGA_NO_MODE_CHANGE */
2007