FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/vesa.c
1 /*-
2 * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/5.2/sys/i386/isa/vesa.c 117710 2003-07-18 00:06:10Z robert $");
29
30 #include "opt_vga.h"
31 #include "opt_vesa.h"
32
33 #ifndef VGA_NO_MODE_CHANGE
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/malloc.h>
40 #include <sys/fbio.h>
41
42 #include <vm/vm.h>
43 #include <vm/vm_extern.h>
44 #include <vm/vm_kern.h>
45 #include <vm/pmap.h>
46
47 #include <machine/md_var.h>
48 #include <machine/vm86.h>
49 #include <machine/pc/bios.h>
50 #include <machine/pc/vesa.h>
51
52 #include <dev/fb/fbreg.h>
53 #include <dev/fb/vgareg.h>
54
55 #ifndef __i386__
56 #include <isa/isareg.h>
57 #else
58 #include <i386/isa/isa.h>
59 #endif
60
61 #define VESA_VIA_CLE266 "VIA CLE266\r\n"
62
63 #ifndef VESA_DEBUG
64 #define VESA_DEBUG 0
65 #endif
66
67 /* VESA video adapter state buffer stub */
68 struct adp_state {
69 int sig;
70 #define V_STATE_SIG 0x61736576
71 u_char regs[1];
72 };
73 typedef struct adp_state adp_state_t;
74
75 /* VESA video adapter */
76 static video_adapter_t *vesa_adp = NULL;
77 static int vesa_state_buf_size = 0;
78
79 /* VESA functions */
80 #if 0
81 static int vesa_nop(void);
82 #endif
83 static int vesa_error(void);
84 static vi_probe_t vesa_probe;
85 static vi_init_t vesa_init;
86 static vi_get_info_t vesa_get_info;
87 static vi_query_mode_t vesa_query_mode;
88 static vi_set_mode_t vesa_set_mode;
89 static vi_save_font_t vesa_save_font;
90 static vi_load_font_t vesa_load_font;
91 static vi_show_font_t vesa_show_font;
92 static vi_save_palette_t vesa_save_palette;
93 static vi_load_palette_t vesa_load_palette;
94 static vi_set_border_t vesa_set_border;
95 static vi_save_state_t vesa_save_state;
96 static vi_load_state_t vesa_load_state;
97 static vi_set_win_org_t vesa_set_origin;
98 static vi_read_hw_cursor_t vesa_read_hw_cursor;
99 static vi_set_hw_cursor_t vesa_set_hw_cursor;
100 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
101 static vi_blank_display_t vesa_blank_display;
102 static vi_mmap_t vesa_mmap;
103 static vi_ioctl_t vesa_ioctl;
104 static vi_clear_t vesa_clear;
105 static vi_fill_rect_t vesa_fill_rect;
106 static vi_bitblt_t vesa_bitblt;
107 static vi_diag_t vesa_diag;
108 static int vesa_bios_info(int level);
109 static struct vm86context vesa_vmcontext;
110
111 static video_switch_t vesavidsw = {
112 vesa_probe,
113 vesa_init,
114 vesa_get_info,
115 vesa_query_mode,
116 vesa_set_mode,
117 vesa_save_font,
118 vesa_load_font,
119 vesa_show_font,
120 vesa_save_palette,
121 vesa_load_palette,
122 vesa_set_border,
123 vesa_save_state,
124 vesa_load_state,
125 vesa_set_origin,
126 vesa_read_hw_cursor,
127 vesa_set_hw_cursor,
128 vesa_set_hw_cursor_shape,
129 vesa_blank_display,
130 vesa_mmap,
131 vesa_ioctl,
132 vesa_clear,
133 vesa_fill_rect,
134 vesa_bitblt,
135 vesa_error,
136 vesa_error,
137 vesa_diag,
138 };
139
140 static video_switch_t *prevvidsw;
141
142 /* VESA BIOS video modes */
143 #define VESA_MAXMODES 64
144 #define EOT (-1)
145 #define NA (-2)
146
147 #define MODE_TABLE_DELTA 8
148
149 static int vesa_vmode_max = 0;
150 static video_info_t vesa_vmode_empty = { EOT };
151 static video_info_t *vesa_vmode = &vesa_vmode_empty;
152
153 static int vesa_init_done = FALSE;
154 static int has_vesa_bios = FALSE;
155 static struct vesa_info *vesa_adp_info = NULL;
156 static u_int16_t *vesa_vmodetab = NULL;
157 static char *vesa_oemstr = NULL;
158 static char *vesa_venderstr = NULL;
159 static char *vesa_prodstr = NULL;
160 static char *vesa_revstr = NULL;
161
162 /* local macros and functions */
163 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
164
165 static int int10_set_mode(int mode);
166 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
167 static int vesa_bios_set_mode(int mode);
168 static int vesa_bios_get_dac(void);
169 static int vesa_bios_set_dac(int bits);
170 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
171 int bits);
172 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
173 u_char *b, int bits);
174 static int vesa_bios_load_palette(int start, int colors, u_char *palette,
175 int bits);
176 #ifdef notyet
177 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
178 u_char *b, int bits);
179 #endif
180 #define STATE_SIZE 0
181 #define STATE_SAVE 1
182 #define STATE_LOAD 2
183 #define STATE_HW (1<<0)
184 #define STATE_DATA (1<<1)
185 #define STATE_DAC (1<<2)
186 #define STATE_REG (1<<3)
187 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
188 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
189 static int vesa_bios_state_buf_size(void);
190 static int vesa_bios_save_restore(int code, void *p, size_t size);
191 static int vesa_bios_get_line_length(void);
192 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
193 #if 0
194 static int vesa_bios_get_start(int *x, int *y);
195 #endif
196 static int vesa_bios_set_start(int x, int y);
197 static int vesa_map_gen_mode_num(int type, int color, int mode);
198 static int vesa_translate_flags(u_int16_t vflags);
199 static int vesa_translate_mmodel(u_int8_t vmodel);
200 static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off,
201 u_char *buf);
202 static int vesa_bios_init(void);
203 static void vesa_clear_modes(video_info_t *info, int color);
204 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
205 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
206
207 #if 0
208 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
209 #endif
210
211 static void
212 dump_buffer(u_char *buf, size_t len)
213 {
214 int i;
215
216 for(i = 0; i < len;) {
217 printf("%02x ", buf[i]);
218 if ((++i % 16) == 0)
219 printf("\n");
220 }
221 }
222
223 /* INT 10 BIOS calls */
224 static int
225 int10_set_mode(int mode)
226 {
227 struct vm86frame vmf;
228
229 bzero(&vmf, sizeof(vmf));
230 vmf.vmf_eax = 0x0000 | mode;
231 vm86_intcall(0x10, &vmf);
232 return 0;
233 }
234
235 /* VESA BIOS calls */
236 static int
237 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
238 {
239 struct vm86frame vmf;
240 u_char *buf;
241 int err;
242
243 bzero(&vmf, sizeof(vmf));
244 vmf.vmf_eax = 0x4f01;
245 vmf.vmf_ecx = mode;
246 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
247 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
248
249 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
250 if ((err != 0) || (vmf.vmf_ax != 0x4f))
251 return 1;
252 bcopy(buf, vmode, sizeof(*vmode));
253 return 0;
254 }
255
256 static int
257 vesa_bios_set_mode(int mode)
258 {
259 struct vm86frame vmf;
260 int err;
261
262 bzero(&vmf, sizeof(vmf));
263 vmf.vmf_eax = 0x4f02;
264 vmf.vmf_ebx = mode;
265 err = vm86_intcall(0x10, &vmf);
266 return ((err != 0) || (vmf.vmf_ax != 0x4f));
267 }
268
269 static int
270 vesa_bios_get_dac(void)
271 {
272 struct vm86frame vmf;
273 int err;
274
275 bzero(&vmf, sizeof(vmf));
276 vmf.vmf_eax = 0x4f08;
277 vmf.vmf_ebx = 1; /* get DAC width */
278 err = vm86_intcall(0x10, &vmf);
279 if ((err != 0) || (vmf.vmf_ax != 0x4f))
280 return 6; /* XXX */
281 return ((vmf.vmf_ebx >> 8) & 0x00ff);
282 }
283
284 static int
285 vesa_bios_set_dac(int bits)
286 {
287 struct vm86frame vmf;
288 int err;
289
290 bzero(&vmf, sizeof(vmf));
291 vmf.vmf_eax = 0x4f08;
292 vmf.vmf_ebx = (bits << 8);
293 err = vm86_intcall(0x10, &vmf);
294 if ((err != 0) || (vmf.vmf_ax != 0x4f))
295 return 6; /* XXX */
296 return ((vmf.vmf_ebx >> 8) & 0x00ff);
297 }
298
299 static int
300 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
301 {
302 struct vm86frame vmf;
303 u_char *p;
304 int err;
305 int i;
306
307 bzero(&vmf, sizeof(vmf));
308 vmf.vmf_eax = 0x4f09;
309 vmf.vmf_ebx = 1; /* get primary palette data */
310 vmf.vmf_ecx = colors;
311 vmf.vmf_edx = start;
312 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
313 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
314
315 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
316 if ((err != 0) || (vmf.vmf_ax != 0x4f))
317 return 1;
318
319 bits = 8 - bits;
320 for (i = 0; i < colors; ++i) {
321 palette[i*3] = p[i*4 + 2] << bits;
322 palette[i*3 + 1] = p[i*4 + 1] << bits;
323 palette[i*3 + 2] = p[i*4] << bits;
324 }
325 return 0;
326 }
327
328 static int
329 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
330 int bits)
331 {
332 struct vm86frame vmf;
333 u_char *p;
334 int err;
335 int i;
336
337 bzero(&vmf, sizeof(vmf));
338 vmf.vmf_eax = 0x4f09;
339 vmf.vmf_ebx = 1; /* get primary palette data */
340 vmf.vmf_ecx = colors;
341 vmf.vmf_edx = start;
342 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
343 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
344
345 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
346 if ((err != 0) || (vmf.vmf_ax != 0x4f))
347 return 1;
348
349 bits = 8 - bits;
350 for (i = 0; i < colors; ++i) {
351 r[i] = p[i*4 + 2] << bits;
352 g[i] = p[i*4 + 1] << bits;
353 b[i] = p[i*4] << bits;
354 }
355 return 0;
356 }
357
358 static int
359 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits)
360 {
361 struct vm86frame vmf;
362 u_char *p;
363 int err;
364 int i;
365
366 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
367 bits = 8 - bits;
368 for (i = 0; i < colors; ++i) {
369 p[i*4] = palette[i*3 + 2] >> bits;
370 p[i*4 + 1] = palette[i*3 + 1] >> bits;
371 p[i*4 + 2] = palette[i*3] >> bits;
372 p[i*4 + 3] = 0;
373 }
374
375 bzero(&vmf, sizeof(vmf));
376 vmf.vmf_eax = 0x4f09;
377 vmf.vmf_ebx = 0; /* set primary palette data */
378 vmf.vmf_ecx = colors;
379 vmf.vmf_edx = start;
380 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
381
382 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
383 return ((err != 0) || (vmf.vmf_ax != 0x4f));
384 }
385
386 #ifdef notyet
387 static int
388 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
389 int bits)
390 {
391 struct vm86frame vmf;
392 u_char *p;
393 int err;
394 int i;
395
396 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
397 bits = 8 - bits;
398 for (i = 0; i < colors; ++i) {
399 p[i*4] = b[i] >> bits;
400 p[i*4 + 1] = g[i] >> bits;
401 p[i*4 + 2] = r[i] >> bits;
402 p[i*4 + 3] = 0;
403 }
404
405 bzero(&vmf, sizeof(vmf));
406 vmf.vmf_eax = 0x4f09;
407 vmf.vmf_ebx = 0; /* set primary palette data */
408 vmf.vmf_ecx = colors;
409 vmf.vmf_edx = start;
410 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
411
412 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
413 return ((err != 0) || (vmf.vmf_ax != 0x4f));
414 }
415 #endif
416
417 static int
418 vesa_bios_state_buf_size(void)
419 {
420 struct vm86frame vmf;
421 int err;
422
423 bzero(&vmf, sizeof(vmf));
424 vmf.vmf_eax = 0x4f04;
425 vmf.vmf_ecx = STATE_MOST;
426 vmf.vmf_edx = STATE_SIZE;
427 err = vm86_intcall(0x10, &vmf);
428 if ((err != 0) || (vmf.vmf_ax != 0x4f))
429 return 0;
430 return vmf.vmf_bx*64;
431 }
432
433 static int
434 vesa_bios_save_restore(int code, void *p, size_t size)
435 {
436 struct vm86frame vmf;
437 u_char *buf;
438 int err;
439
440 bzero(&vmf, sizeof(vmf));
441 vmf.vmf_eax = 0x4f04;
442 vmf.vmf_ecx = STATE_MOST;
443 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
444 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
445 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx);
446 bcopy(p, buf, size);
447
448 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
449 return ((err != 0) || (vmf.vmf_ax != 0x4f));
450 }
451
452 static int
453 vesa_bios_get_line_length(void)
454 {
455 struct vm86frame vmf;
456 int err;
457
458 bzero(&vmf, sizeof(vmf));
459 vmf.vmf_eax = 0x4f06;
460 vmf.vmf_ebx = 1; /* get scan line length */
461 err = vm86_intcall(0x10, &vmf);
462 if ((err != 0) || (vmf.vmf_ax != 0x4f))
463 return -1;
464 return vmf.vmf_bx; /* line length in bytes */
465 }
466
467 static int
468 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
469 {
470 struct vm86frame vmf;
471 int err;
472
473 bzero(&vmf, sizeof(vmf));
474 vmf.vmf_eax = 0x4f06;
475 vmf.vmf_ebx = 0; /* set scan line length in pixel */
476 vmf.vmf_ecx = pixel;
477 err = vm86_intcall(0x10, &vmf);
478 #if VESA_DEBUG > 1
479 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
480 #endif
481 if ((err != 0) || (vmf.vmf_ax != 0x4f))
482 return 1;
483 if (bytes)
484 *bytes = vmf.vmf_bx;
485 if (lines)
486 *lines = vmf.vmf_dx;
487 return 0;
488 }
489
490 #if 0
491 static int
492 vesa_bios_get_start(int *x, int *y)
493 {
494 struct vm86frame vmf;
495 int err;
496
497 bzero(&vmf, sizeof(vmf));
498 vmf.vmf_eax = 0x4f07;
499 vmf.vmf_ebx = 1; /* get display start */
500 err = vm86_intcall(0x10, &vmf);
501 if ((err != 0) || (vmf.vmf_ax != 0x4f))
502 return 1;
503 *x = vmf.vmf_cx;
504 *y = vmf.vmf_dx;
505 return 0;
506 }
507 #endif
508
509 static int
510 vesa_bios_set_start(int x, int y)
511 {
512 struct vm86frame vmf;
513 int err;
514
515 bzero(&vmf, sizeof(vmf));
516 vmf.vmf_eax = 0x4f07;
517 vmf.vmf_ebx = 0x80; /* set display start */
518 vmf.vmf_edx = y;
519 vmf.vmf_ecx = x;
520 err = vm86_intcall(0x10, &vmf);
521 return ((err != 0) || (vmf.vmf_ax != 0x4f));
522 }
523
524 /* map a generic video mode to a known mode */
525 static int
526 vesa_map_gen_mode_num(int type, int color, int mode)
527 {
528 static struct {
529 int from;
530 int to;
531 } mode_map[] = {
532 { M_TEXT_132x25, M_VESA_C132x25 },
533 { M_TEXT_132x43, M_VESA_C132x43 },
534 { M_TEXT_132x50, M_VESA_C132x50 },
535 { M_TEXT_132x60, M_VESA_C132x60 },
536 };
537 int i;
538
539 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
540 if (mode_map[i].from == mode)
541 return mode_map[i].to;
542 }
543 return mode;
544 }
545
546 static int
547 vesa_translate_flags(u_int16_t vflags)
548 {
549 static struct {
550 u_int16_t mask;
551 int set;
552 int reset;
553 } ftable[] = {
554 { V_MODECOLOR, V_INFO_COLOR, 0 },
555 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
556 { V_MODELFB, V_INFO_LINEAR, 0 },
557 };
558 int flags;
559 int i;
560
561 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
562 flags |= (vflags & ftable[i].mask) ?
563 ftable[i].set : ftable[i].reset;
564 }
565 return flags;
566 }
567
568 static int
569 vesa_translate_mmodel(u_int8_t vmodel)
570 {
571 static struct {
572 u_int8_t vmodel;
573 int mmodel;
574 } mtable[] = {
575 { V_MMTEXT, V_INFO_MM_TEXT },
576 { V_MMCGA, V_INFO_MM_CGA },
577 { V_MMHGC, V_INFO_MM_HGC },
578 { V_MMEGA, V_INFO_MM_PLANAR },
579 { V_MMPACKED, V_INFO_MM_PACKED },
580 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
581 };
582 int i;
583
584 for (i = 0; mtable[i].mmodel >= 0; ++i) {
585 if (mtable[i].vmodel == vmodel)
586 return mtable[i].mmodel;
587 }
588 return V_INFO_MM_OTHER;
589 }
590
591 static void
592 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf)
593 {
594 if (p == 0)
595 return NULL;
596 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
597 return (void *)(buf + ((p & 0xffff) - off));
598 else {
599 p = BIOS_SADDRTOLADDR(p);
600 return (void *)BIOS_PADDRTOVADDR(p);
601 }
602 }
603
604 static int
605 vesa_bios_init(void)
606 {
607 static u_char buf[512];
608 struct vm86frame vmf;
609 struct vesa_mode vmode;
610 video_info_t *p;
611 u_char *vmbuf;
612 int is_via_cle266;
613 int modes;
614 int err;
615 int i;
616
617 if (vesa_init_done)
618 return 0;
619
620 has_vesa_bios = FALSE;
621 vesa_adp_info = NULL;
622 vesa_vmode_max = 0;
623 vesa_vmode[0].vi_mode = EOT;
624
625 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0);
626 bzero(&vmf, sizeof(vmf)); /* paranoia */
627 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
628 vmf.vmf_eax = 0x4f00;
629 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
630
631 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
632 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
633 return 1;
634 bcopy(vmbuf, buf, sizeof(buf));
635 vesa_adp_info = (struct vesa_info *)buf;
636 if (bootverbose) {
637 printf("VESA: information block\n");
638 dump_buffer(buf, 64);
639 }
640 if (vesa_adp_info->v_flags & V_NONVGA)
641 return 1;
642 if (vesa_adp_info->v_version < 0x0102) {
643 printf("VESA: VBE version %d.%d is not supported; "
644 "version 1.2 or later is required.\n",
645 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
646 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
647 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
648 + (vesa_adp_info->v_version & 0x000f));
649 return 1;
650 }
651
652 /* fix string ptrs */
653 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
654 vmf.vmf_es, vmf.vmf_di, buf);
655 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0;
656
657 if (vesa_adp_info->v_version >= 0x0200) {
658 vesa_venderstr =
659 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr,
660 vmf.vmf_es, vmf.vmf_di, buf);
661 vesa_prodstr =
662 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
663 vmf.vmf_es, vmf.vmf_di, buf);
664 vesa_revstr =
665 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
666 vmf.vmf_es, vmf.vmf_di, buf);
667 }
668
669 /* obtain video mode information */
670 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
671 vmf.vmf_es, vmf.vmf_di, buf);
672 if (vesa_vmodetab == NULL)
673 return 1;
674 for (i = 0, modes = 0;
675 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
676 && (vesa_vmodetab[i] != 0xffff); ++i) {
677 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
678 continue;
679
680 /* reject unsupported modes */
681 #if 0
682 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
683 | V_MODENONVGA))
684 != (V_MODESUPP | V_MODEOPTINFO))
685 continue;
686 #else
687 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
688 #if VESA_DEBUG > 1
689 printf(
690 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
691 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
692 vmode.v_width, vmode.v_height, vmode.v_bpp,
693 vmode.v_modeattr);
694 #endif
695 continue;
696 }
697 #endif
698
699 /* expand the array if necessary */
700 if (modes >= vesa_vmode_max) {
701 vesa_vmode_max += MODE_TABLE_DELTA;
702 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
703 M_DEVBUF, M_WAITOK);
704 #if VESA_DEBUG > 1
705 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
706 modes, vesa_vmode_max);
707 #endif
708 if (modes > 0) {
709 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
710 free(vesa_vmode, M_DEVBUF);
711 }
712 vesa_vmode = p;
713 }
714
715 #if VESA_DEBUG > 1
716 printf("Found VESA %s mode: %d x %d x %d bpp\n",
717 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
718 vmode.v_width, vmode.v_height, vmode.v_bpp);
719 #endif
720 if (is_via_cle266) {
721 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
722 vmode.v_width &= 0xff;
723 vmode.v_waseg = 0xb8000 >> 4;
724 }
725 }
726
727 /* copy some fields */
728 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
729 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
730 vesa_vmode[modes].vi_width = vmode.v_width;
731 vesa_vmode[modes].vi_height = vmode.v_height;
732 vesa_vmode[modes].vi_depth = vmode.v_bpp;
733 vesa_vmode[modes].vi_planes = vmode.v_planes;
734 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
735 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
736 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
737 /* XXX window B */
738 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
739 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
740 if (vmode.v_modeattr & V_MODELFB)
741 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
742 else
743 vesa_vmode[modes].vi_buffer = 0;
744 /* XXX */
745 vesa_vmode[modes].vi_buffer_size
746 = vesa_adp_info->v_memsize*64*1024;
747 #if 0
748 if (vmode.v_offscreen > vmode.v_lfb)
749 vesa_vmode[modes].vi_buffer_size
750 = vmode.v_offscreen + vmode.v_offscreensize*1024
751 - vmode.v_lfb;
752 else
753 vesa_vmode[modes].vi_buffer_size
754 = vmode.v_offscreen + vmode.v_offscreensize*1024
755 #endif
756 vesa_vmode[modes].vi_mem_model
757 = vesa_translate_mmodel(vmode.v_memmodel);
758 vesa_vmode[modes].vi_pixel_fields[0] = 0;
759 vesa_vmode[modes].vi_pixel_fields[1] = 0;
760 vesa_vmode[modes].vi_pixel_fields[2] = 0;
761 vesa_vmode[modes].vi_pixel_fields[3] = 0;
762 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
763 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
764 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
765 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
766 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
767 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
768 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
769 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
770 vesa_vmode[modes].vi_pixel_fields[0]
771 = vmode.v_redfieldpos;
772 vesa_vmode[modes].vi_pixel_fields[1]
773 = vmode.v_greenfieldpos;
774 vesa_vmode[modes].vi_pixel_fields[2]
775 = vmode.v_bluefieldpos;
776 vesa_vmode[modes].vi_pixel_fields[3]
777 = vmode.v_resfieldpos;
778 vesa_vmode[modes].vi_pixel_fsizes[0]
779 = vmode.v_redmasksize;
780 vesa_vmode[modes].vi_pixel_fsizes[1]
781 = vmode.v_greenmasksize;
782 vesa_vmode[modes].vi_pixel_fsizes[2]
783 = vmode.v_bluemasksize;
784 vesa_vmode[modes].vi_pixel_fsizes[3]
785 = vmode.v_resmasksize;
786 } else {
787 vesa_vmode[modes].vi_pixel_size = 0;
788 }
789
790 vesa_vmode[modes].vi_flags
791 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
792 ++modes;
793 }
794 vesa_vmode[modes].vi_mode = EOT;
795 if (bootverbose)
796 printf("VESA: %d mode(s) found\n", modes);
797
798 has_vesa_bios = (modes > 0);
799 return (has_vesa_bios ? 0 : 1);
800 }
801
802 static void
803 vesa_clear_modes(video_info_t *info, int color)
804 {
805 while (info->vi_mode != EOT) {
806 if ((info->vi_flags & V_INFO_COLOR) != color)
807 info->vi_mode = NA;
808 ++info;
809 }
810 }
811
812 static vm_offset_t
813 vesa_map_buffer(u_int paddr, size_t size)
814 {
815 vm_offset_t vaddr;
816 u_int off;
817
818 off = paddr - trunc_page(paddr);
819 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
820 #if VESA_DEBUG > 1
821 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
822 paddr, vaddr, size, off);
823 #endif
824 return (vaddr + off);
825 }
826
827 static void
828 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
829 {
830 #if VESA_DEBUG > 1
831 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
832 #endif
833 kmem_free(kernel_map, vaddr, size);
834 }
835
836 /* entry points */
837
838 static int
839 vesa_configure(int flags)
840 {
841 video_adapter_t *adp;
842 int adapters;
843 int error;
844 int i;
845
846 if (vesa_init_done)
847 return 0;
848 if (flags & VIO_PROBE_ONLY)
849 return 0; /* XXX */
850
851 /*
852 * If the VESA module has already been loaded, abort loading
853 * the module this time.
854 */
855 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
856 if (adp->va_flags & V_ADP_VESA)
857 return ENXIO;
858 if (adp->va_type == KD_VGA)
859 break;
860 }
861 /*
862 * The VGA adapter is not found. This is because either
863 * 1) the VGA driver has not been initialized, or 2) the VGA card
864 * is not present. If 1) is the case, we shall defer
865 * initialization for now and try again later.
866 */
867 if (adp == NULL) {
868 vga_sub_configure = vesa_configure;
869 return ENODEV;
870 }
871
872 /* count number of registered adapters */
873 for (++i; vid_get_adapter(i) != NULL; ++i)
874 ;
875 adapters = i;
876
877 /* call VESA BIOS */
878 vesa_adp = adp;
879 if (vesa_bios_init()) {
880 vesa_adp = NULL;
881 return ENXIO;
882 }
883 vesa_adp->va_flags |= V_ADP_VESA;
884
885 /* remove conflicting modes if we have more than one adapter */
886 if (adapters > 1) {
887 vesa_clear_modes(vesa_vmode,
888 (vesa_adp->va_flags & V_ADP_COLOR) ?
889 V_INFO_COLOR : 0);
890 }
891
892 if ((error = vesa_load_ioctl()) == 0) {
893 prevvidsw = vidsw[vesa_adp->va_index];
894 vidsw[vesa_adp->va_index] = &vesavidsw;
895 vesa_init_done = TRUE;
896 } else {
897 vesa_adp = NULL;
898 return error;
899 }
900
901 return 0;
902 }
903
904 #if 0
905 static int
906 vesa_nop(void)
907 {
908 return 0;
909 }
910 #endif
911
912 static int
913 vesa_error(void)
914 {
915 return 1;
916 }
917
918 static int
919 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
920 {
921 return (*prevvidsw->probe)(unit, adpp, arg, flags);
922 }
923
924 static int
925 vesa_init(int unit, video_adapter_t *adp, int flags)
926 {
927 return (*prevvidsw->init)(unit, adp, flags);
928 }
929
930 static int
931 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
932 {
933 int i;
934
935 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
936 return 0;
937
938 if (adp != vesa_adp)
939 return 1;
940
941 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
942 vesa_adp->va_flags & V_ADP_COLOR, mode);
943 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
944 if (vesa_vmode[i].vi_mode == NA)
945 continue;
946 if (vesa_vmode[i].vi_mode == mode) {
947 *info = vesa_vmode[i];
948 return 0;
949 }
950 }
951 return 1;
952 }
953
954 static int
955 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
956 {
957 int i;
958
959 if ((*prevvidsw->query_mode)(adp, info) == 0)
960 return 0;
961 if (adp != vesa_adp)
962 return ENODEV;
963
964 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
965 if ((info->vi_width != 0)
966 && (info->vi_width != vesa_vmode[i].vi_width))
967 continue;
968 if ((info->vi_height != 0)
969 && (info->vi_height != vesa_vmode[i].vi_height))
970 continue;
971 if ((info->vi_cwidth != 0)
972 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
973 continue;
974 if ((info->vi_cheight != 0)
975 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
976 continue;
977 if ((info->vi_depth != 0)
978 && (info->vi_depth != vesa_vmode[i].vi_depth))
979 continue;
980 if ((info->vi_planes != 0)
981 && (info->vi_planes != vesa_vmode[i].vi_planes))
982 continue;
983 /* pixel format, memory model */
984 if ((info->vi_flags != 0)
985 && (info->vi_flags != vesa_vmode[i].vi_flags))
986 continue;
987 *info = vesa_vmode[i];
988 return 0;
989 }
990 return ENODEV;
991 }
992
993 static int
994 vesa_set_mode(video_adapter_t *adp, int mode)
995 {
996 video_info_t info;
997 int len;
998
999 if (adp != vesa_adp)
1000 return (*prevvidsw->set_mode)(adp, mode);
1001
1002 mode = vesa_map_gen_mode_num(adp->va_type,
1003 adp->va_flags & V_ADP_COLOR, mode);
1004 #if VESA_DEBUG > 0
1005 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
1006 adp->va_mode, adp->va_mode, mode, mode);
1007 #endif
1008 /*
1009 * If the current mode is a VESA mode and the new mode is not,
1010 * restore the state of the adapter first by setting one of the
1011 * standard VGA mode, so that non-standard, extended SVGA registers
1012 * are set to the state compatible with the standard VGA modes.
1013 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1014 * the new mode correctly.
1015 */
1016 if (VESA_MODE(adp->va_mode)) {
1017 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1018 int10_set_mode(adp->va_initial_bios_mode);
1019 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1020 vesa_unmap_buffer(adp->va_buffer,
1021 vesa_adp_info->v_memsize*64*1024);
1022 /*
1023 * Once (*prevvidsw->get_info)() succeeded,
1024 * (*prevvidsw->set_mode)() below won't fail...
1025 */
1026 }
1027 }
1028
1029 /* we may not need to handle this mode after all... */
1030 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1031 return 0;
1032
1033 /* is the new mode supported? */
1034 if (vesa_get_info(adp, mode, &info))
1035 return 1;
1036 /* assert(VESA_MODE(mode)); */
1037
1038 #if VESA_DEBUG > 0
1039 printf("VESA: about to set a VESA mode...\n");
1040 #endif
1041 /* don't use the linear frame buffer for text modes. XXX */
1042 if (!(info.vi_flags & V_INFO_GRAPHICS))
1043 info.vi_flags &= ~V_INFO_LINEAR;
1044
1045 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1046 return 1;
1047
1048 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1049 vesa_unmap_buffer(adp->va_buffer,
1050 vesa_adp_info->v_memsize*64*1024);
1051
1052 #if VESA_DEBUG > 0
1053 printf("VESA: mode set!\n");
1054 #endif
1055 vesa_adp->va_mode = mode;
1056 vesa_adp->va_flags &= ~V_ADP_COLOR;
1057 vesa_adp->va_flags |=
1058 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1059 vesa_adp->va_crtc_addr =
1060 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1061 if (info.vi_flags & V_INFO_LINEAR) {
1062 #if VESA_DEBUG > 1
1063 printf("VESA: setting up LFB\n");
1064 #endif
1065 vesa_adp->va_buffer =
1066 vesa_map_buffer(info.vi_buffer,
1067 vesa_adp_info->v_memsize*64*1024);
1068 vesa_adp->va_buffer_size = info.vi_buffer_size;
1069 vesa_adp->va_window = vesa_adp->va_buffer;
1070 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1071 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1072 } else {
1073 vesa_adp->va_buffer = 0;
1074 vesa_adp->va_buffer_size = info.vi_buffer_size;
1075 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1076 vesa_adp->va_window_size = info.vi_window_size;
1077 vesa_adp->va_window_gran = info.vi_window_gran;
1078 }
1079 vesa_adp->va_window_orig = 0;
1080 len = vesa_bios_get_line_length();
1081 if (len > 0) {
1082 vesa_adp->va_line_width = len;
1083 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1084 switch (info.vi_depth/info.vi_planes) {
1085 case 1:
1086 vesa_adp->va_line_width = info.vi_width/8;
1087 break;
1088 case 2:
1089 vesa_adp->va_line_width = info.vi_width/4;
1090 break;
1091 case 4:
1092 vesa_adp->va_line_width = info.vi_width/2;
1093 break;
1094 case 8:
1095 default: /* shouldn't happen */
1096 vesa_adp->va_line_width = info.vi_width;
1097 break;
1098 }
1099 } else {
1100 vesa_adp->va_line_width = info.vi_width;
1101 }
1102 vesa_adp->va_disp_start.x = 0;
1103 vesa_adp->va_disp_start.y = 0;
1104 #if VESA_DEBUG > 0
1105 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1106 info.vi_width, len, vesa_adp->va_line_width);
1107 #endif
1108 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1109
1110 /* move hardware cursor out of the way */
1111 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1112
1113 return 0;
1114 }
1115
1116 static int
1117 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1118 int ch, int count)
1119 {
1120 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1121 }
1122
1123 static int
1124 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1125 int ch, int count)
1126 {
1127 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1128 }
1129
1130 static int
1131 vesa_show_font(video_adapter_t *adp, int page)
1132 {
1133 return (*prevvidsw->show_font)(adp, page);
1134 }
1135
1136 static int
1137 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1138 {
1139 int bits;
1140 int error;
1141
1142 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1143 && VESA_MODE(adp->va_mode)) {
1144 bits = vesa_bios_get_dac();
1145 error = vesa_bios_save_palette(0, 256, palette, bits);
1146 if (error == 0)
1147 return 0;
1148 if (bits != 6)
1149 return error;
1150 }
1151
1152 return (*prevvidsw->save_palette)(adp, palette);
1153 }
1154
1155 static int
1156 vesa_load_palette(video_adapter_t *adp, u_char *palette)
1157 {
1158 #if notyet
1159 int bits;
1160 int error;
1161
1162 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1163 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1164 error = vesa_bios_load_palette(0, 256, palette, bits);
1165 if (error == 0)
1166 return 0;
1167 if (vesa_bios_set_dac(6) != 6)
1168 return 1;
1169 }
1170 #endif /* notyet */
1171
1172 return (*prevvidsw->load_palette)(adp, palette);
1173 }
1174
1175 static int
1176 vesa_set_border(video_adapter_t *adp, int color)
1177 {
1178 return (*prevvidsw->set_border)(adp, color);
1179 }
1180
1181 static int
1182 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1183 {
1184 if (adp != vesa_adp)
1185 return (*prevvidsw->save_state)(adp, p, size);
1186
1187 if (vesa_state_buf_size == 0)
1188 vesa_state_buf_size = vesa_bios_state_buf_size();
1189 if (size == 0)
1190 return (sizeof(int) + vesa_state_buf_size);
1191 else if (size < (sizeof(int) + vesa_state_buf_size))
1192 return 1;
1193
1194 ((adp_state_t *)p)->sig = V_STATE_SIG;
1195 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1196 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1197 vesa_state_buf_size);
1198 }
1199
1200 static int
1201 vesa_load_state(video_adapter_t *adp, void *p)
1202 {
1203 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1204 return (*prevvidsw->load_state)(adp, p);
1205
1206 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1207 vesa_state_buf_size);
1208 }
1209
1210 #if 0
1211 static int
1212 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1213 {
1214 struct vm86frame vmf;
1215 int err;
1216
1217 bzero(&vmf, sizeof(vmf));
1218 vmf.vmf_eax = 0x4f05;
1219 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1220 err = vm86_intcall(0x10, &vmf);
1221 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1222 return 1;
1223 *offset = vmf.vmf_dx*adp->va_window_gran;
1224 return 0;
1225 }
1226 #endif
1227
1228 static int
1229 vesa_set_origin(video_adapter_t *adp, off_t offset)
1230 {
1231 struct vm86frame vmf;
1232 int err;
1233
1234 /*
1235 * This function should return as quickly as possible to
1236 * maintain good performance of the system. For this reason,
1237 * error checking is kept minimal and let the VESA BIOS to
1238 * detect error.
1239 */
1240 if (adp != vesa_adp)
1241 return (*prevvidsw->set_win_org)(adp, offset);
1242
1243 /* if this is a linear frame buffer, do nothing */
1244 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1245 return 0;
1246 /* XXX */
1247 if (adp->va_window_gran == 0)
1248 return 1;
1249
1250 bzero(&vmf, sizeof(vmf));
1251 vmf.vmf_eax = 0x4f05;
1252 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1253 vmf.vmf_edx = offset/adp->va_window_gran;
1254 err = vm86_intcall(0x10, &vmf);
1255 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1256 return 1;
1257 bzero(&vmf, sizeof(vmf));
1258 vmf.vmf_eax = 0x4f05;
1259 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1260 vmf.vmf_edx = offset/adp->va_window_gran;
1261 err = vm86_intcall(0x10, &vmf);
1262 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1263 return 0; /* XXX */
1264 }
1265
1266 static int
1267 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1268 {
1269 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1270 }
1271
1272 static int
1273 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1274 {
1275 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1276 }
1277
1278 static int
1279 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1280 int celsize, int blink)
1281 {
1282 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1283 blink);
1284 }
1285
1286 static int
1287 vesa_blank_display(video_adapter_t *adp, int mode)
1288 {
1289 /* XXX: use VESA DPMS */
1290 return (*prevvidsw->blank_display)(adp, mode);
1291 }
1292
1293 static int
1294 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr,
1295 int prot)
1296 {
1297 #if VESA_DEBUG > 0
1298 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1299 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1300 #endif
1301
1302 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1303 /* va_window_size == va_buffer_size/vi_planes */
1304 /* XXX: is this correct? */
1305 if (offset > adp->va_window_size - PAGE_SIZE)
1306 return -1;
1307 *paddr = adp->va_info.vi_buffer + offset;
1308 return 0;
1309 } else {
1310 return (*prevvidsw->mmap)(adp, offset, paddr, prot);
1311 }
1312 }
1313
1314 static int
1315 vesa_clear(video_adapter_t *adp)
1316 {
1317 return (*prevvidsw->clear)(adp);
1318 }
1319
1320 static int
1321 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1322 {
1323 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1324 }
1325
1326 static int
1327 vesa_bitblt(video_adapter_t *adp,...)
1328 {
1329 /* FIXME */
1330 return 1;
1331 }
1332
1333 static int
1334 get_palette(video_adapter_t *adp, int base, int count,
1335 u_char *red, u_char *green, u_char *blue, u_char *trans)
1336 {
1337 u_char *r;
1338 u_char *g;
1339 u_char *b;
1340 int bits;
1341 int error;
1342
1343 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1344 return 1;
1345 if ((base + count) > 256)
1346 return 1;
1347 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1348 return 1;
1349
1350 bits = vesa_bios_get_dac();
1351 if (bits <= 6)
1352 return 1;
1353
1354 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1355 g = r + count;
1356 b = g + count;
1357 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1358 if (error == 0) {
1359 copyout(r, red, count);
1360 copyout(g, green, count);
1361 copyout(b, blue, count);
1362 if (trans != NULL) {
1363 bzero(r, count);
1364 copyout(r, trans, count);
1365 }
1366 }
1367 free(r, M_DEVBUF);
1368
1369 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1370 return error;
1371 }
1372
1373 static int
1374 set_palette(video_adapter_t *adp, int base, int count,
1375 u_char *red, u_char *green, u_char *blue, u_char *trans)
1376 {
1377 return 1;
1378 #if notyet
1379 u_char *r;
1380 u_char *g;
1381 u_char *b;
1382 int bits;
1383 int error;
1384
1385 if ((base < 0) || (base >= 256) || (base + count > 256))
1386 return 1;
1387 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1388 || ((bits = vesa_bios_set_dac(8)) <= 6))
1389 return 1;
1390
1391 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1392 g = r + count;
1393 b = g + count;
1394 copyin(red, r, count);
1395 copyin(green, g, count);
1396 copyin(blue, b, count);
1397
1398 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1399 free(r, M_DEVBUF);
1400 if (error == 0)
1401 return 0;
1402
1403 /* if the following call fails, we are in trouble... XXX */
1404 vesa_bios_set_dac(6);
1405 return 1;
1406 #endif /* notyet */
1407 }
1408
1409 static int
1410 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1411 {
1412 int bytes;
1413
1414 if (adp != vesa_adp)
1415 return (*prevvidsw->ioctl)(adp, cmd, arg);
1416
1417 switch (cmd) {
1418 case FBIO_SETWINORG: /* set frame buffer window origin */
1419 if (!VESA_MODE(adp->va_mode))
1420 return (*prevvidsw->ioctl)(adp, cmd, arg);
1421 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1422
1423 case FBIO_SETDISPSTART: /* set display start address */
1424 if (!VESA_MODE(adp->va_mode))
1425 return (*prevvidsw->ioctl)(adp, cmd, arg);
1426 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1427 ((video_display_start_t *)arg)->y))
1428 return ENODEV;
1429 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1430 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1431 return 0;
1432
1433 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1434 if (!VESA_MODE(adp->va_mode))
1435 return (*prevvidsw->ioctl)(adp, cmd, arg);
1436 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1437 return ENODEV;
1438 adp->va_line_width = bytes;
1439 #if VESA_DEBUG > 1
1440 printf("new line width:%d\n", adp->va_line_width);
1441 #endif
1442 return 0;
1443
1444 case FBIO_GETPALETTE: /* get color palette */
1445 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1446 ((video_color_palette_t *)arg)->count,
1447 ((video_color_palette_t *)arg)->red,
1448 ((video_color_palette_t *)arg)->green,
1449 ((video_color_palette_t *)arg)->blue,
1450 ((video_color_palette_t *)arg)->transparent))
1451 return (*prevvidsw->ioctl)(adp, cmd, arg);
1452 return 0;
1453
1454
1455 case FBIO_SETPALETTE: /* set color palette */
1456 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1457 ((video_color_palette_t *)arg)->count,
1458 ((video_color_palette_t *)arg)->red,
1459 ((video_color_palette_t *)arg)->green,
1460 ((video_color_palette_t *)arg)->blue,
1461 ((video_color_palette_t *)arg)->transparent))
1462 return (*prevvidsw->ioctl)(adp, cmd, arg);
1463 return 0;
1464
1465 case FBIOGETCMAP: /* get color palette */
1466 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1467 ((struct fbcmap *)arg)->count,
1468 ((struct fbcmap *)arg)->red,
1469 ((struct fbcmap *)arg)->green,
1470 ((struct fbcmap *)arg)->blue, NULL))
1471 return (*prevvidsw->ioctl)(adp, cmd, arg);
1472 return 0;
1473
1474 case FBIOPUTCMAP: /* set color palette */
1475 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1476 ((struct fbcmap *)arg)->count,
1477 ((struct fbcmap *)arg)->red,
1478 ((struct fbcmap *)arg)->green,
1479 ((struct fbcmap *)arg)->blue, NULL))
1480 return (*prevvidsw->ioctl)(adp, cmd, arg);
1481 return 0;
1482
1483 default:
1484 return (*prevvidsw->ioctl)(adp, cmd, arg);
1485 }
1486 }
1487
1488 static int
1489 vesa_diag(video_adapter_t *adp, int level)
1490 {
1491 int error;
1492
1493 /* call the previous handler first */
1494 error = (*prevvidsw->diag)(adp, level);
1495 if (error)
1496 return error;
1497
1498 if (adp != vesa_adp)
1499 return 1;
1500
1501 if (level <= 0)
1502 return 0;
1503
1504 return 0;
1505 }
1506
1507 static int
1508 vesa_bios_info(int level)
1509 {
1510 #if VESA_DEBUG > 1
1511 struct vesa_mode vmode;
1512 int i;
1513 #endif
1514
1515 /* general adapter information */
1516 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1517 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
1518 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
1519 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
1520 + (vesa_adp_info->v_version & 0x000f),
1521 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1522 vesa_vmodetab, vesa_adp_info->v_modetable);
1523 /* OEM string */
1524 if (vesa_oemstr != NULL)
1525 printf("VESA: %s\n", vesa_oemstr);
1526
1527 if (level <= 0)
1528 return 0;
1529
1530 if (vesa_adp_info->v_version >= 0x0200) {
1531 /* vender name, product name, product revision */
1532 printf("VESA: %s %s %s\n",
1533 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
1534 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1535 (vesa_revstr != NULL) ? vesa_revstr : "?");
1536 }
1537
1538 #if VESA_DEBUG > 1
1539 /* mode information */
1540 for (i = 0;
1541 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1542 && (vesa_vmodetab[i] != 0xffff); ++i) {
1543 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1544 continue;
1545
1546 /* print something for diagnostic purpose */
1547 printf("VESA: mode:0x%03x, flags:0x%04x",
1548 vesa_vmodetab[i], vmode.v_modeattr);
1549 if (vmode.v_modeattr & V_MODEOPTINFO) {
1550 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1551 printf(", G %dx%dx%d %d, ",
1552 vmode.v_width, vmode.v_height,
1553 vmode.v_bpp, vmode.v_planes);
1554 } else {
1555 printf(", T %dx%d, ",
1556 vmode.v_width, vmode.v_height);
1557 }
1558 printf("font:%dx%d, ",
1559 vmode.v_cwidth, vmode.v_cheight);
1560 printf("pages:%d, mem:%d",
1561 vmode.v_ipages + 1, vmode.v_memmodel);
1562 }
1563 if (vmode.v_modeattr & V_MODELFB) {
1564 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1565 vmode.v_lfb, vmode.v_offscreen,
1566 vmode.v_offscreensize*1024);
1567 }
1568 printf("\n");
1569 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1570 vmode.v_waseg, vmode.v_waattr,
1571 vmode.v_wbseg, vmode.v_wbattr);
1572 printf("size:%dk, gran:%dk\n",
1573 vmode.v_wsize, vmode.v_wgran);
1574 }
1575 #endif /* VESA_DEBUG > 1 */
1576
1577 return 0;
1578 }
1579
1580 /* module loading */
1581
1582 static int
1583 vesa_load(void)
1584 {
1585 int error;
1586 int s;
1587
1588 if (vesa_init_done)
1589 return 0;
1590
1591 /* locate a VGA adapter */
1592 s = spltty();
1593 vesa_adp = NULL;
1594 error = vesa_configure(0);
1595 splx(s);
1596
1597 if (error == 0)
1598 vesa_bios_info(bootverbose);
1599
1600 return error;
1601 }
1602
1603 static int
1604 vesa_unload(void)
1605 {
1606 u_char palette[256*3];
1607 int error;
1608 int bits;
1609 int s;
1610
1611 /* if the adapter is currently in a VESA mode, don't unload */
1612 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1613 return EBUSY;
1614 /*
1615 * FIXME: if there is at least one vty which is in a VESA mode,
1616 * we shouldn't be unloading! XXX
1617 */
1618
1619 s = spltty();
1620 if ((error = vesa_unload_ioctl()) == 0) {
1621 if (vesa_adp != NULL) {
1622 if (vesa_adp_info->v_flags & V_DAC8) {
1623 bits = vesa_bios_get_dac();
1624 if (bits > 6) {
1625 vesa_bios_save_palette(0, 256,
1626 palette, bits);
1627 vesa_bios_set_dac(6);
1628 vesa_bios_load_palette(0, 256,
1629 palette, 6);
1630 }
1631 }
1632 vesa_adp->va_flags &= ~V_ADP_VESA;
1633 vidsw[vesa_adp->va_index] = prevvidsw;
1634 }
1635 }
1636 splx(s);
1637
1638 return error;
1639 }
1640
1641 static int
1642 vesa_mod_event(module_t mod, int type, void *data)
1643 {
1644 switch (type) {
1645 case MOD_LOAD:
1646 return vesa_load();
1647 case MOD_UNLOAD:
1648 return vesa_unload();
1649 default:
1650 break;
1651 }
1652 return 0;
1653 }
1654
1655 static moduledata_t vesa_mod = {
1656 "vesa",
1657 vesa_mod_event,
1658 NULL,
1659 };
1660
1661 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1662
1663 #endif /* VGA_NO_MODE_CHANGE */
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