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 * $FreeBSD: releng/5.1/sys/i386/isa/vesa.c 113130 2003-04-05 18:08:22Z cognet $
27 */
28
29 #include "opt_vga.h"
30 #include "opt_vesa.h"
31
32 #ifndef VGA_NO_MODE_CHANGE
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/malloc.h>
39 #include <sys/fbio.h>
40
41 #include <vm/vm.h>
42 #include <vm/vm_extern.h>
43 #include <vm/vm_kern.h>
44 #include <vm/pmap.h>
45
46 #include <machine/md_var.h>
47 #include <machine/vm86.h>
48 #include <machine/pc/bios.h>
49 #include <machine/pc/vesa.h>
50
51 #include <dev/fb/fbreg.h>
52 #include <dev/fb/vgareg.h>
53
54 #ifndef __i386__
55 #include <isa/isareg.h>
56 #else
57 #include <i386/isa/isa.h>
58 #endif
59
60 #ifndef VESA_DEBUG
61 #define VESA_DEBUG 0
62 #endif
63
64 /* VESA video adapter state buffer stub */
65 struct adp_state {
66 int sig;
67 #define V_STATE_SIG 0x61736576
68 u_char regs[1];
69 };
70 typedef struct adp_state adp_state_t;
71
72 /* VESA video adapter */
73 static video_adapter_t *vesa_adp = NULL;
74 static int vesa_state_buf_size = 0;
75
76 /* VESA functions */
77 #if 0
78 static int vesa_nop(void);
79 #endif
80 static int vesa_error(void);
81 static vi_probe_t vesa_probe;
82 static vi_init_t vesa_init;
83 static vi_get_info_t vesa_get_info;
84 static vi_query_mode_t vesa_query_mode;
85 static vi_set_mode_t vesa_set_mode;
86 static vi_save_font_t vesa_save_font;
87 static vi_load_font_t vesa_load_font;
88 static vi_show_font_t vesa_show_font;
89 static vi_save_palette_t vesa_save_palette;
90 static vi_load_palette_t vesa_load_palette;
91 static vi_set_border_t vesa_set_border;
92 static vi_save_state_t vesa_save_state;
93 static vi_load_state_t vesa_load_state;
94 static vi_set_win_org_t vesa_set_origin;
95 static vi_read_hw_cursor_t vesa_read_hw_cursor;
96 static vi_set_hw_cursor_t vesa_set_hw_cursor;
97 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
98 static vi_blank_display_t vesa_blank_display;
99 static vi_mmap_t vesa_mmap;
100 static vi_ioctl_t vesa_ioctl;
101 static vi_clear_t vesa_clear;
102 static vi_fill_rect_t vesa_fill_rect;
103 static vi_bitblt_t vesa_bitblt;
104 static vi_diag_t vesa_diag;
105 static int vesa_bios_info(int level);
106 static struct vm86context vesa_vmcontext;
107
108 static video_switch_t vesavidsw = {
109 vesa_probe,
110 vesa_init,
111 vesa_get_info,
112 vesa_query_mode,
113 vesa_set_mode,
114 vesa_save_font,
115 vesa_load_font,
116 vesa_show_font,
117 vesa_save_palette,
118 vesa_load_palette,
119 vesa_set_border,
120 vesa_save_state,
121 vesa_load_state,
122 vesa_set_origin,
123 vesa_read_hw_cursor,
124 vesa_set_hw_cursor,
125 vesa_set_hw_cursor_shape,
126 vesa_blank_display,
127 vesa_mmap,
128 vesa_ioctl,
129 vesa_clear,
130 vesa_fill_rect,
131 vesa_bitblt,
132 vesa_error,
133 vesa_error,
134 vesa_diag,
135 };
136
137 static video_switch_t *prevvidsw;
138
139 /* VESA BIOS video modes */
140 #define VESA_MAXMODES 64
141 #define EOT (-1)
142 #define NA (-2)
143
144 #define MODE_TABLE_DELTA 8
145
146 static int vesa_vmode_max = 0;
147 static video_info_t vesa_vmode_empty = { EOT };
148 static video_info_t *vesa_vmode = &vesa_vmode_empty;
149
150 static int vesa_init_done = FALSE;
151 static int has_vesa_bios = FALSE;
152 static struct vesa_info *vesa_adp_info = NULL;
153 static u_int16_t *vesa_vmodetab = NULL;
154 static char *vesa_oemstr = NULL;
155 static char *vesa_venderstr = NULL;
156 static char *vesa_prodstr = NULL;
157 static char *vesa_revstr = NULL;
158
159 /* local macros and functions */
160 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
161
162 static int int10_set_mode(int mode);
163 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
164 static int vesa_bios_set_mode(int mode);
165 static int vesa_bios_get_dac(void);
166 static int vesa_bios_set_dac(int bits);
167 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
168 int bits);
169 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
170 u_char *b, int bits);
171 static int vesa_bios_load_palette(int start, int colors, u_char *palette,
172 int bits);
173 #ifdef notyet
174 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
175 u_char *b, int bits);
176 #endif
177 #define STATE_SIZE 0
178 #define STATE_SAVE 1
179 #define STATE_LOAD 2
180 #define STATE_HW (1<<0)
181 #define STATE_DATA (1<<1)
182 #define STATE_DAC (1<<2)
183 #define STATE_REG (1<<3)
184 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
185 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
186 static int vesa_bios_state_buf_size(void);
187 static int vesa_bios_save_restore(int code, void *p, size_t size);
188 static int vesa_bios_get_line_length(void);
189 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
190 #if 0
191 static int vesa_bios_get_start(int *x, int *y);
192 #endif
193 static int vesa_bios_set_start(int x, int y);
194 static int vesa_map_gen_mode_num(int type, int color, int mode);
195 static int vesa_translate_flags(u_int16_t vflags);
196 static int vesa_translate_mmodel(u_int8_t vmodel);
197 static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off,
198 u_char *buf);
199 static int vesa_bios_init(void);
200 static void vesa_clear_modes(video_info_t *info, int color);
201 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
202 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
203
204 #if 0
205 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
206 #endif
207
208 static void
209 dump_buffer(u_char *buf, size_t len)
210 {
211 int i;
212
213 for(i = 0; i < len;) {
214 printf("%02x ", buf[i]);
215 if ((++i % 16) == 0)
216 printf("\n");
217 }
218 }
219
220 /* INT 10 BIOS calls */
221 static int
222 int10_set_mode(int mode)
223 {
224 struct vm86frame vmf;
225
226 bzero(&vmf, sizeof(vmf));
227 vmf.vmf_eax = 0x0000 | mode;
228 vm86_intcall(0x10, &vmf);
229 return 0;
230 }
231
232 /* VESA BIOS calls */
233 static int
234 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
235 {
236 struct vm86frame vmf;
237 u_char *buf;
238 int err;
239
240 bzero(&vmf, sizeof(vmf));
241 vmf.vmf_eax = 0x4f01;
242 vmf.vmf_ecx = mode;
243 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
244 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
245
246 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
247 if ((err != 0) || (vmf.vmf_ax != 0x4f))
248 return 1;
249 bcopy(buf, vmode, sizeof(*vmode));
250 return 0;
251 }
252
253 static int
254 vesa_bios_set_mode(int mode)
255 {
256 struct vm86frame vmf;
257 int err;
258
259 bzero(&vmf, sizeof(vmf));
260 vmf.vmf_eax = 0x4f02;
261 vmf.vmf_ebx = mode;
262 err = vm86_intcall(0x10, &vmf);
263 return ((err != 0) || (vmf.vmf_ax != 0x4f));
264 }
265
266 static int
267 vesa_bios_get_dac(void)
268 {
269 struct vm86frame vmf;
270 int err;
271
272 bzero(&vmf, sizeof(vmf));
273 vmf.vmf_eax = 0x4f08;
274 vmf.vmf_ebx = 1; /* get DAC width */
275 err = vm86_intcall(0x10, &vmf);
276 if ((err != 0) || (vmf.vmf_ax != 0x4f))
277 return 6; /* XXX */
278 return ((vmf.vmf_ebx >> 8) & 0x00ff);
279 }
280
281 static int
282 vesa_bios_set_dac(int bits)
283 {
284 struct vm86frame vmf;
285 int err;
286
287 bzero(&vmf, sizeof(vmf));
288 vmf.vmf_eax = 0x4f08;
289 vmf.vmf_ebx = (bits << 8);
290 err = vm86_intcall(0x10, &vmf);
291 if ((err != 0) || (vmf.vmf_ax != 0x4f))
292 return 6; /* XXX */
293 return ((vmf.vmf_ebx >> 8) & 0x00ff);
294 }
295
296 static int
297 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
298 {
299 struct vm86frame vmf;
300 u_char *p;
301 int err;
302 int i;
303
304 bzero(&vmf, sizeof(vmf));
305 vmf.vmf_eax = 0x4f09;
306 vmf.vmf_ebx = 1; /* get primary palette data */
307 vmf.vmf_ecx = colors;
308 vmf.vmf_edx = start;
309 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
310 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
311
312 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
313 if ((err != 0) || (vmf.vmf_ax != 0x4f))
314 return 1;
315
316 bits = 8 - bits;
317 for (i = 0; i < colors; ++i) {
318 palette[i*3] = p[i*4 + 2] << bits;
319 palette[i*3 + 1] = p[i*4 + 1] << bits;
320 palette[i*3 + 2] = p[i*4] << bits;
321 }
322 return 0;
323 }
324
325 static int
326 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
327 int bits)
328 {
329 struct vm86frame vmf;
330 u_char *p;
331 int err;
332 int i;
333
334 bzero(&vmf, sizeof(vmf));
335 vmf.vmf_eax = 0x4f09;
336 vmf.vmf_ebx = 1; /* get primary palette data */
337 vmf.vmf_ecx = colors;
338 vmf.vmf_edx = start;
339 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
340 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
341
342 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
343 if ((err != 0) || (vmf.vmf_ax != 0x4f))
344 return 1;
345
346 bits = 8 - bits;
347 for (i = 0; i < colors; ++i) {
348 r[i] = p[i*4 + 2] << bits;
349 g[i] = p[i*4 + 1] << bits;
350 b[i] = p[i*4] << bits;
351 }
352 return 0;
353 }
354
355 static int
356 vesa_bios_load_palette(int start, int colors, u_char *palette, int bits)
357 {
358 struct vm86frame vmf;
359 u_char *p;
360 int err;
361 int i;
362
363 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
364 bits = 8 - bits;
365 for (i = 0; i < colors; ++i) {
366 p[i*4] = palette[i*3 + 2] >> bits;
367 p[i*4 + 1] = palette[i*3 + 1] >> bits;
368 p[i*4 + 2] = palette[i*3] >> bits;
369 p[i*4 + 3] = 0;
370 }
371
372 bzero(&vmf, sizeof(vmf));
373 vmf.vmf_eax = 0x4f09;
374 vmf.vmf_ebx = 0; /* set primary palette data */
375 vmf.vmf_ecx = colors;
376 vmf.vmf_edx = start;
377 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
378
379 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
380 return ((err != 0) || (vmf.vmf_ax != 0x4f));
381 }
382
383 #ifdef notyet
384 static int
385 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
386 int bits)
387 {
388 struct vm86frame vmf;
389 u_char *p;
390 int err;
391 int i;
392
393 p = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
394 bits = 8 - bits;
395 for (i = 0; i < colors; ++i) {
396 p[i*4] = b[i] >> bits;
397 p[i*4 + 1] = g[i] >> bits;
398 p[i*4 + 2] = r[i] >> bits;
399 p[i*4 + 3] = 0;
400 }
401
402 bzero(&vmf, sizeof(vmf));
403 vmf.vmf_eax = 0x4f09;
404 vmf.vmf_ebx = 0; /* set primary palette data */
405 vmf.vmf_ecx = colors;
406 vmf.vmf_edx = start;
407 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
408
409 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
410 return ((err != 0) || (vmf.vmf_ax != 0x4f));
411 }
412 #endif
413
414 static int
415 vesa_bios_state_buf_size(void)
416 {
417 struct vm86frame vmf;
418 int err;
419
420 bzero(&vmf, sizeof(vmf));
421 vmf.vmf_eax = 0x4f04;
422 vmf.vmf_ecx = STATE_MOST;
423 vmf.vmf_edx = STATE_SIZE;
424 err = vm86_intcall(0x10, &vmf);
425 if ((err != 0) || (vmf.vmf_ax != 0x4f))
426 return 0;
427 return vmf.vmf_bx*64;
428 }
429
430 static int
431 vesa_bios_save_restore(int code, void *p, size_t size)
432 {
433 struct vm86frame vmf;
434 u_char *buf;
435 int err;
436
437 bzero(&vmf, sizeof(vmf));
438 vmf.vmf_eax = 0x4f04;
439 vmf.vmf_ecx = STATE_MOST;
440 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
441 buf = (u_char *)vm86_getpage(&vesa_vmcontext, 1);
442 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx);
443 bcopy(p, buf, size);
444
445 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
446 return ((err != 0) || (vmf.vmf_ax != 0x4f));
447 }
448
449 static int
450 vesa_bios_get_line_length(void)
451 {
452 struct vm86frame vmf;
453 int err;
454
455 bzero(&vmf, sizeof(vmf));
456 vmf.vmf_eax = 0x4f06;
457 vmf.vmf_ebx = 1; /* get scan line length */
458 err = vm86_intcall(0x10, &vmf);
459 if ((err != 0) || (vmf.vmf_ax != 0x4f))
460 return -1;
461 return vmf.vmf_bx; /* line length in bytes */
462 }
463
464 static int
465 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
466 {
467 struct vm86frame vmf;
468 int err;
469
470 bzero(&vmf, sizeof(vmf));
471 vmf.vmf_eax = 0x4f06;
472 vmf.vmf_ebx = 0; /* set scan line length in pixel */
473 vmf.vmf_ecx = pixel;
474 err = vm86_intcall(0x10, &vmf);
475 #if VESA_DEBUG > 1
476 printf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
477 #endif
478 if ((err != 0) || (vmf.vmf_ax != 0x4f))
479 return 1;
480 if (bytes)
481 *bytes = vmf.vmf_bx;
482 if (lines)
483 *lines = vmf.vmf_dx;
484 return 0;
485 }
486
487 #if 0
488 static int
489 vesa_bios_get_start(int *x, int *y)
490 {
491 struct vm86frame vmf;
492 int err;
493
494 bzero(&vmf, sizeof(vmf));
495 vmf.vmf_eax = 0x4f07;
496 vmf.vmf_ebx = 1; /* get display start */
497 err = vm86_intcall(0x10, &vmf);
498 if ((err != 0) || (vmf.vmf_ax != 0x4f))
499 return 1;
500 *x = vmf.vmf_cx;
501 *y = vmf.vmf_dx;
502 return 0;
503 }
504 #endif
505
506 static int
507 vesa_bios_set_start(int x, int y)
508 {
509 struct vm86frame vmf;
510 int err;
511
512 bzero(&vmf, sizeof(vmf));
513 vmf.vmf_eax = 0x4f07;
514 vmf.vmf_ebx = 0x80; /* set display start */
515 vmf.vmf_edx = y;
516 vmf.vmf_ecx = x;
517 err = vm86_intcall(0x10, &vmf);
518 return ((err != 0) || (vmf.vmf_ax != 0x4f));
519 }
520
521 /* map a generic video mode to a known mode */
522 static int
523 vesa_map_gen_mode_num(int type, int color, int mode)
524 {
525 static struct {
526 int from;
527 int to;
528 } mode_map[] = {
529 { M_TEXT_132x25, M_VESA_C132x25 },
530 { M_TEXT_132x43, M_VESA_C132x43 },
531 { M_TEXT_132x50, M_VESA_C132x50 },
532 { M_TEXT_132x60, M_VESA_C132x60 },
533 };
534 int i;
535
536 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
537 if (mode_map[i].from == mode)
538 return mode_map[i].to;
539 }
540 return mode;
541 }
542
543 static int
544 vesa_translate_flags(u_int16_t vflags)
545 {
546 static struct {
547 u_int16_t mask;
548 int set;
549 int reset;
550 } ftable[] = {
551 { V_MODECOLOR, V_INFO_COLOR, 0 },
552 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
553 { V_MODELFB, V_INFO_LINEAR, 0 },
554 };
555 int flags;
556 int i;
557
558 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
559 flags |= (vflags & ftable[i].mask) ?
560 ftable[i].set : ftable[i].reset;
561 }
562 return flags;
563 }
564
565 static int
566 vesa_translate_mmodel(u_int8_t vmodel)
567 {
568 static struct {
569 u_int8_t vmodel;
570 int mmodel;
571 } mtable[] = {
572 { V_MMTEXT, V_INFO_MM_TEXT },
573 { V_MMCGA, V_INFO_MM_CGA },
574 { V_MMHGC, V_INFO_MM_HGC },
575 { V_MMEGA, V_INFO_MM_PLANAR },
576 { V_MMPACKED, V_INFO_MM_PACKED },
577 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
578 };
579 int i;
580
581 for (i = 0; mtable[i].mmodel >= 0; ++i) {
582 if (mtable[i].vmodel == vmodel)
583 return mtable[i].mmodel;
584 }
585 return V_INFO_MM_OTHER;
586 }
587
588 static void
589 *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf)
590 {
591 if (p == 0)
592 return NULL;
593 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
594 return (void *)(buf + ((p & 0xffff) - off));
595 else {
596 p = BIOS_SADDRTOLADDR(p);
597 return (void *)BIOS_PADDRTOVADDR(p);
598 }
599 }
600
601 static int
602 vesa_bios_init(void)
603 {
604 static u_char buf[512];
605 struct vm86frame vmf;
606 struct vesa_mode vmode;
607 video_info_t *p;
608 u_char *vmbuf;
609 int modes;
610 int err;
611 int i;
612
613 if (vesa_init_done)
614 return 0;
615
616 has_vesa_bios = FALSE;
617 vesa_adp_info = NULL;
618 vesa_vmode_max = 0;
619 vesa_vmode[0].vi_mode = EOT;
620
621 vmbuf = (u_char *)vm86_addpage(&vesa_vmcontext, 1, 0);
622 bzero(&vmf, sizeof(vmf)); /* paranoia */
623 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
624 vmf.vmf_eax = 0x4f00;
625 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
626
627 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
628 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
629 return 1;
630 bcopy(vmbuf, buf, sizeof(buf));
631 vesa_adp_info = (struct vesa_info *)buf;
632 if (bootverbose) {
633 printf("VESA: information block\n");
634 dump_buffer(buf, 64);
635 }
636 if (vesa_adp_info->v_flags & V_NONVGA)
637 return 1;
638 if (vesa_adp_info->v_version < 0x0102) {
639 printf("VESA: VBE version %d.%d is not supported; "
640 "version 1.2 or later is required.\n",
641 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
642 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
643 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
644 + (vesa_adp_info->v_version & 0x000f));
645 return 1;
646 }
647
648 /* fix string ptrs */
649 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
650 vmf.vmf_es, vmf.vmf_di, buf);
651 if (vesa_adp_info->v_version >= 0x0200) {
652 vesa_venderstr =
653 (char *)vesa_fix_ptr(vesa_adp_info->v_venderstr,
654 vmf.vmf_es, vmf.vmf_di, buf);
655 vesa_prodstr =
656 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
657 vmf.vmf_es, vmf.vmf_di, buf);
658 vesa_revstr =
659 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
660 vmf.vmf_es, vmf.vmf_di, buf);
661 }
662
663 /* obtain video mode information */
664 vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
665 vmf.vmf_es, vmf.vmf_di, buf);
666 if (vesa_vmodetab == NULL)
667 return 1;
668 for (i = 0, modes = 0;
669 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
670 && (vesa_vmodetab[i] != 0xffff); ++i) {
671 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
672 continue;
673
674 /* reject unsupported modes */
675 #if 0
676 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
677 | V_MODENONVGA))
678 != (V_MODESUPP | V_MODEOPTINFO))
679 continue;
680 #else
681 if ((vmode.v_modeattr & V_MODEOPTINFO) == 0) {
682 #if VESA_DEBUG > 1
683 printf(
684 "Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
685 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
686 vmode.v_width, vmode.v_height, vmode.v_bpp,
687 vmode.v_modeattr);
688 #endif
689 continue;
690 }
691 #endif
692
693 /* expand the array if necessary */
694 if (modes >= vesa_vmode_max) {
695 vesa_vmode_max += MODE_TABLE_DELTA;
696 p = malloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
697 M_DEVBUF, M_WAITOK);
698 #if VESA_DEBUG > 1
699 printf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
700 modes, vesa_vmode_max);
701 #endif
702 if (modes > 0) {
703 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
704 free(vesa_vmode, M_DEVBUF);
705 }
706 vesa_vmode = p;
707 }
708
709 #if VESA_DEBUG > 1
710 printf("Found VESA %s mode: %d x %d x %d bpp\n",
711 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
712 vmode.v_width, vmode.v_height, vmode.v_bpp);
713 #endif
714 /* copy some fields */
715 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
716 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
717 vesa_vmode[modes].vi_width = vmode.v_width;
718 vesa_vmode[modes].vi_height = vmode.v_height;
719 vesa_vmode[modes].vi_depth = vmode.v_bpp;
720 vesa_vmode[modes].vi_planes = vmode.v_planes;
721 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
722 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
723 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
724 /* XXX window B */
725 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
726 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
727 if (vmode.v_modeattr & V_MODELFB)
728 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
729 else
730 vesa_vmode[modes].vi_buffer = 0;
731 /* XXX */
732 vesa_vmode[modes].vi_buffer_size
733 = vesa_adp_info->v_memsize*64*1024;
734 #if 0
735 if (vmode.v_offscreen > vmode.v_lfb)
736 vesa_vmode[modes].vi_buffer_size
737 = vmode.v_offscreen + vmode.v_offscreensize*1024
738 - vmode.v_lfb;
739 else
740 vesa_vmode[modes].vi_buffer_size
741 = vmode.v_offscreen + vmode.v_offscreensize*1024
742 #endif
743 vesa_vmode[modes].vi_mem_model
744 = vesa_translate_mmodel(vmode.v_memmodel);
745 vesa_vmode[modes].vi_pixel_fields[0] = 0;
746 vesa_vmode[modes].vi_pixel_fields[1] = 0;
747 vesa_vmode[modes].vi_pixel_fields[2] = 0;
748 vesa_vmode[modes].vi_pixel_fields[3] = 0;
749 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
750 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
751 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
752 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
753 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
754 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
755 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
756 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
757 vesa_vmode[modes].vi_pixel_fields[0]
758 = vmode.v_redfieldpos;
759 vesa_vmode[modes].vi_pixel_fields[1]
760 = vmode.v_greenfieldpos;
761 vesa_vmode[modes].vi_pixel_fields[2]
762 = vmode.v_bluefieldpos;
763 vesa_vmode[modes].vi_pixel_fields[3]
764 = vmode.v_resfieldpos;
765 vesa_vmode[modes].vi_pixel_fsizes[0]
766 = vmode.v_redmasksize;
767 vesa_vmode[modes].vi_pixel_fsizes[1]
768 = vmode.v_greenmasksize;
769 vesa_vmode[modes].vi_pixel_fsizes[2]
770 = vmode.v_bluemasksize;
771 vesa_vmode[modes].vi_pixel_fsizes[3]
772 = vmode.v_resmasksize;
773 } else {
774 vesa_vmode[modes].vi_pixel_size = 0;
775 }
776
777 vesa_vmode[modes].vi_flags
778 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
779 ++modes;
780 }
781 vesa_vmode[modes].vi_mode = EOT;
782 if (bootverbose)
783 printf("VESA: %d mode(s) found\n", modes);
784
785 has_vesa_bios = (modes > 0);
786 return (has_vesa_bios ? 0 : 1);
787 }
788
789 static void
790 vesa_clear_modes(video_info_t *info, int color)
791 {
792 while (info->vi_mode != EOT) {
793 if ((info->vi_flags & V_INFO_COLOR) != color)
794 info->vi_mode = NA;
795 ++info;
796 }
797 }
798
799 static vm_offset_t
800 vesa_map_buffer(u_int paddr, size_t size)
801 {
802 vm_offset_t vaddr;
803 u_int off;
804
805 off = paddr - trunc_page(paddr);
806 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
807 #if VESA_DEBUG > 1
808 printf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
809 paddr, vaddr, size, off);
810 #endif
811 return (vaddr + off);
812 }
813
814 static void
815 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
816 {
817 #if VESA_DEBUG > 1
818 printf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
819 #endif
820 kmem_free(kernel_map, vaddr, size);
821 }
822
823 /* entry points */
824
825 static int
826 vesa_configure(int flags)
827 {
828 video_adapter_t *adp;
829 int adapters;
830 int error;
831 int i;
832
833 if (vesa_init_done)
834 return 0;
835 if (flags & VIO_PROBE_ONLY)
836 return 0; /* XXX */
837
838 /*
839 * If the VESA module has already been loaded, abort loading
840 * the module this time.
841 */
842 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
843 if (adp->va_flags & V_ADP_VESA)
844 return ENXIO;
845 if (adp->va_type == KD_VGA)
846 break;
847 }
848 /*
849 * The VGA adapter is not found. This is because either
850 * 1) the VGA driver has not been initialized, or 2) the VGA card
851 * is not present. If 1) is the case, we shall defer
852 * initialization for now and try again later.
853 */
854 if (adp == NULL) {
855 vga_sub_configure = vesa_configure;
856 return ENODEV;
857 }
858
859 /* count number of registered adapters */
860 for (++i; vid_get_adapter(i) != NULL; ++i)
861 ;
862 adapters = i;
863
864 /* call VESA BIOS */
865 vesa_adp = adp;
866 if (vesa_bios_init()) {
867 vesa_adp = NULL;
868 return ENXIO;
869 }
870 vesa_adp->va_flags |= V_ADP_VESA;
871
872 /* remove conflicting modes if we have more than one adapter */
873 if (adapters > 1) {
874 vesa_clear_modes(vesa_vmode,
875 (vesa_adp->va_flags & V_ADP_COLOR) ?
876 V_INFO_COLOR : 0);
877 }
878
879 if ((error = vesa_load_ioctl()) == 0) {
880 prevvidsw = vidsw[vesa_adp->va_index];
881 vidsw[vesa_adp->va_index] = &vesavidsw;
882 vesa_init_done = TRUE;
883 } else {
884 vesa_adp = NULL;
885 return error;
886 }
887
888 return 0;
889 }
890
891 #if 0
892 static int
893 vesa_nop(void)
894 {
895 return 0;
896 }
897 #endif
898
899 static int
900 vesa_error(void)
901 {
902 return 1;
903 }
904
905 static int
906 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
907 {
908 return (*prevvidsw->probe)(unit, adpp, arg, flags);
909 }
910
911 static int
912 vesa_init(int unit, video_adapter_t *adp, int flags)
913 {
914 return (*prevvidsw->init)(unit, adp, flags);
915 }
916
917 static int
918 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
919 {
920 int i;
921
922 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
923 return 0;
924
925 if (adp != vesa_adp)
926 return 1;
927
928 mode = vesa_map_gen_mode_num(vesa_adp->va_type,
929 vesa_adp->va_flags & V_ADP_COLOR, mode);
930 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
931 if (vesa_vmode[i].vi_mode == NA)
932 continue;
933 if (vesa_vmode[i].vi_mode == mode) {
934 *info = vesa_vmode[i];
935 return 0;
936 }
937 }
938 return 1;
939 }
940
941 static int
942 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
943 {
944 int i;
945
946 if ((*prevvidsw->query_mode)(adp, info) == 0)
947 return 0;
948 if (adp != vesa_adp)
949 return ENODEV;
950
951 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
952 if ((info->vi_width != 0)
953 && (info->vi_width != vesa_vmode[i].vi_width))
954 continue;
955 if ((info->vi_height != 0)
956 && (info->vi_height != vesa_vmode[i].vi_height))
957 continue;
958 if ((info->vi_cwidth != 0)
959 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
960 continue;
961 if ((info->vi_cheight != 0)
962 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
963 continue;
964 if ((info->vi_depth != 0)
965 && (info->vi_depth != vesa_vmode[i].vi_depth))
966 continue;
967 if ((info->vi_planes != 0)
968 && (info->vi_planes != vesa_vmode[i].vi_planes))
969 continue;
970 /* pixel format, memory model */
971 if ((info->vi_flags != 0)
972 && (info->vi_flags != vesa_vmode[i].vi_flags))
973 continue;
974 *info = vesa_vmode[i];
975 return 0;
976 }
977 return ENODEV;
978 }
979
980 static int
981 vesa_set_mode(video_adapter_t *adp, int mode)
982 {
983 video_info_t info;
984 int len;
985
986 if (adp != vesa_adp)
987 return (*prevvidsw->set_mode)(adp, mode);
988
989 mode = vesa_map_gen_mode_num(adp->va_type,
990 adp->va_flags & V_ADP_COLOR, mode);
991 #if VESA_DEBUG > 0
992 printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
993 adp->va_mode, adp->va_mode, mode, mode);
994 #endif
995 /*
996 * If the current mode is a VESA mode and the new mode is not,
997 * restore the state of the adapter first by setting one of the
998 * standard VGA mode, so that non-standard, extended SVGA registers
999 * are set to the state compatible with the standard VGA modes.
1000 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
1001 * the new mode correctly.
1002 */
1003 if (VESA_MODE(adp->va_mode)) {
1004 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1005 int10_set_mode(adp->va_initial_bios_mode);
1006 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1007 vesa_unmap_buffer(adp->va_buffer,
1008 vesa_adp_info->v_memsize*64*1024);
1009 /*
1010 * Once (*prevvidsw->get_info)() succeeded,
1011 * (*prevvidsw->set_mode)() below won't fail...
1012 */
1013 }
1014 }
1015
1016 /* we may not need to handle this mode after all... */
1017 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1018 return 0;
1019
1020 /* is the new mode supported? */
1021 if (vesa_get_info(adp, mode, &info))
1022 return 1;
1023 /* assert(VESA_MODE(mode)); */
1024
1025 #if VESA_DEBUG > 0
1026 printf("VESA: about to set a VESA mode...\n");
1027 #endif
1028 /* don't use the linear frame buffer for text modes. XXX */
1029 if (!(info.vi_flags & V_INFO_GRAPHICS))
1030 info.vi_flags &= ~V_INFO_LINEAR;
1031
1032 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1033 return 1;
1034
1035 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1036 vesa_unmap_buffer(adp->va_buffer,
1037 vesa_adp_info->v_memsize*64*1024);
1038
1039 #if VESA_DEBUG > 0
1040 printf("VESA: mode set!\n");
1041 #endif
1042 vesa_adp->va_mode = mode;
1043 vesa_adp->va_flags &= ~V_ADP_COLOR;
1044 vesa_adp->va_flags |=
1045 (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
1046 vesa_adp->va_crtc_addr =
1047 (vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
1048 if (info.vi_flags & V_INFO_LINEAR) {
1049 #if VESA_DEBUG > 1
1050 printf("VESA: setting up LFB\n");
1051 #endif
1052 vesa_adp->va_buffer =
1053 vesa_map_buffer(info.vi_buffer,
1054 vesa_adp_info->v_memsize*64*1024);
1055 vesa_adp->va_buffer_size = info.vi_buffer_size;
1056 vesa_adp->va_window = vesa_adp->va_buffer;
1057 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1058 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1059 } else {
1060 vesa_adp->va_buffer = 0;
1061 vesa_adp->va_buffer_size = info.vi_buffer_size;
1062 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1063 vesa_adp->va_window_size = info.vi_window_size;
1064 vesa_adp->va_window_gran = info.vi_window_gran;
1065 }
1066 vesa_adp->va_window_orig = 0;
1067 len = vesa_bios_get_line_length();
1068 if (len > 0) {
1069 vesa_adp->va_line_width = len;
1070 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1071 switch (info.vi_depth/info.vi_planes) {
1072 case 1:
1073 vesa_adp->va_line_width = info.vi_width/8;
1074 break;
1075 case 2:
1076 vesa_adp->va_line_width = info.vi_width/4;
1077 break;
1078 case 4:
1079 vesa_adp->va_line_width = info.vi_width/2;
1080 break;
1081 case 8:
1082 default: /* shouldn't happen */
1083 vesa_adp->va_line_width = info.vi_width;
1084 break;
1085 }
1086 } else {
1087 vesa_adp->va_line_width = info.vi_width;
1088 }
1089 vesa_adp->va_disp_start.x = 0;
1090 vesa_adp->va_disp_start.y = 0;
1091 #if VESA_DEBUG > 0
1092 printf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1093 info.vi_width, len, vesa_adp->va_line_width);
1094 #endif
1095 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1096
1097 /* move hardware cursor out of the way */
1098 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1099
1100 return 0;
1101 }
1102
1103 static int
1104 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1105 int ch, int count)
1106 {
1107 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1108 }
1109
1110 static int
1111 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1112 int ch, int count)
1113 {
1114 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1115 }
1116
1117 static int
1118 vesa_show_font(video_adapter_t *adp, int page)
1119 {
1120 return (*prevvidsw->show_font)(adp, page);
1121 }
1122
1123 static int
1124 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1125 {
1126 int bits;
1127 int error;
1128
1129 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1130 && VESA_MODE(adp->va_mode)) {
1131 bits = vesa_bios_get_dac();
1132 error = vesa_bios_save_palette(0, 256, palette, bits);
1133 if (error == 0)
1134 return 0;
1135 if (bits != 6)
1136 return error;
1137 }
1138
1139 return (*prevvidsw->save_palette)(adp, palette);
1140 }
1141
1142 static int
1143 vesa_load_palette(video_adapter_t *adp, u_char *palette)
1144 {
1145 #if notyet
1146 int bits;
1147 int error;
1148
1149 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1150 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1151 error = vesa_bios_load_palette(0, 256, palette, bits);
1152 if (error == 0)
1153 return 0;
1154 if (vesa_bios_set_dac(6) != 6)
1155 return 1;
1156 }
1157 #endif /* notyet */
1158
1159 return (*prevvidsw->load_palette)(adp, palette);
1160 }
1161
1162 static int
1163 vesa_set_border(video_adapter_t *adp, int color)
1164 {
1165 return (*prevvidsw->set_border)(adp, color);
1166 }
1167
1168 static int
1169 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1170 {
1171 if (adp != vesa_adp)
1172 return (*prevvidsw->save_state)(adp, p, size);
1173
1174 if (vesa_state_buf_size == 0)
1175 vesa_state_buf_size = vesa_bios_state_buf_size();
1176 if (size == 0)
1177 return (sizeof(int) + vesa_state_buf_size);
1178 else if (size < (sizeof(int) + vesa_state_buf_size))
1179 return 1;
1180
1181 ((adp_state_t *)p)->sig = V_STATE_SIG;
1182 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1183 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1184 vesa_state_buf_size);
1185 }
1186
1187 static int
1188 vesa_load_state(video_adapter_t *adp, void *p)
1189 {
1190 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1191 return (*prevvidsw->load_state)(adp, p);
1192
1193 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1194 vesa_state_buf_size);
1195 }
1196
1197 #if 0
1198 static int
1199 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1200 {
1201 struct vm86frame vmf;
1202 int err;
1203
1204 bzero(&vmf, sizeof(vmf));
1205 vmf.vmf_eax = 0x4f05;
1206 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1207 err = vm86_intcall(0x10, &vmf);
1208 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1209 return 1;
1210 *offset = vmf.vmf_dx*adp->va_window_gran;
1211 return 0;
1212 }
1213 #endif
1214
1215 static int
1216 vesa_set_origin(video_adapter_t *adp, off_t offset)
1217 {
1218 struct vm86frame vmf;
1219 int err;
1220
1221 /*
1222 * This function should return as quickly as possible to
1223 * maintain good performance of the system. For this reason,
1224 * error checking is kept minimal and let the VESA BIOS to
1225 * detect error.
1226 */
1227 if (adp != vesa_adp)
1228 return (*prevvidsw->set_win_org)(adp, offset);
1229
1230 /* if this is a linear frame buffer, do nothing */
1231 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1232 return 0;
1233 /* XXX */
1234 if (adp->va_window_gran == 0)
1235 return 1;
1236
1237 bzero(&vmf, sizeof(vmf));
1238 vmf.vmf_eax = 0x4f05;
1239 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1240 vmf.vmf_edx = offset/adp->va_window_gran;
1241 err = vm86_intcall(0x10, &vmf);
1242 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1243 return 1;
1244 bzero(&vmf, sizeof(vmf));
1245 vmf.vmf_eax = 0x4f05;
1246 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1247 vmf.vmf_edx = offset/adp->va_window_gran;
1248 err = vm86_intcall(0x10, &vmf);
1249 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1250 return 0; /* XXX */
1251 }
1252
1253 static int
1254 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1255 {
1256 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1257 }
1258
1259 static int
1260 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1261 {
1262 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1263 }
1264
1265 static int
1266 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1267 int celsize, int blink)
1268 {
1269 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1270 blink);
1271 }
1272
1273 static int
1274 vesa_blank_display(video_adapter_t *adp, int mode)
1275 {
1276 /* XXX: use VESA DPMS */
1277 return (*prevvidsw->blank_display)(adp, mode);
1278 }
1279
1280 static int
1281 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_paddr_t *paddr,
1282 int prot)
1283 {
1284 #if VESA_DEBUG > 0
1285 printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1286 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1287 #endif
1288
1289 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1290 /* va_window_size == va_buffer_size/vi_planes */
1291 /* XXX: is this correct? */
1292 if (offset > adp->va_window_size - PAGE_SIZE)
1293 return -1;
1294 *paddr = adp->va_info.vi_buffer + offset;
1295 return 0;
1296 } else {
1297 return (*prevvidsw->mmap)(adp, offset, paddr, prot);
1298 }
1299 }
1300
1301 static int
1302 vesa_clear(video_adapter_t *adp)
1303 {
1304 return (*prevvidsw->clear)(adp);
1305 }
1306
1307 static int
1308 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1309 {
1310 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1311 }
1312
1313 static int
1314 vesa_bitblt(video_adapter_t *adp,...)
1315 {
1316 /* FIXME */
1317 return 1;
1318 }
1319
1320 static int
1321 get_palette(video_adapter_t *adp, int base, int count,
1322 u_char *red, u_char *green, u_char *blue, u_char *trans)
1323 {
1324 u_char *r;
1325 u_char *g;
1326 u_char *b;
1327 int bits;
1328 int error;
1329
1330 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1331 return 1;
1332 if ((base + count) > 256)
1333 return 1;
1334 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1335 return 1;
1336
1337 bits = vesa_bios_get_dac();
1338 if (bits <= 6)
1339 return 1;
1340
1341 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1342 g = r + count;
1343 b = g + count;
1344 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1345 if (error == 0) {
1346 copyout(r, red, count);
1347 copyout(g, green, count);
1348 copyout(b, blue, count);
1349 if (trans != NULL) {
1350 bzero(r, count);
1351 copyout(r, trans, count);
1352 }
1353 }
1354 free(r, M_DEVBUF);
1355
1356 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1357 return error;
1358 }
1359
1360 static int
1361 set_palette(video_adapter_t *adp, int base, int count,
1362 u_char *red, u_char *green, u_char *blue, u_char *trans)
1363 {
1364 return 1;
1365 #if notyet
1366 u_char *r;
1367 u_char *g;
1368 u_char *b;
1369 int bits;
1370 int error;
1371
1372 if ((base < 0) || (base >= 256) || (base + count > 256))
1373 return 1;
1374 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1375 || ((bits = vesa_bios_set_dac(8)) <= 6))
1376 return 1;
1377
1378 r = malloc(count*3, M_DEVBUF, M_WAITOK);
1379 g = r + count;
1380 b = g + count;
1381 copyin(red, r, count);
1382 copyin(green, g, count);
1383 copyin(blue, b, count);
1384
1385 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1386 free(r, M_DEVBUF);
1387 if (error == 0)
1388 return 0;
1389
1390 /* if the following call fails, we are in trouble... XXX */
1391 vesa_bios_set_dac(6);
1392 return 1;
1393 #endif /* notyet */
1394 }
1395
1396 static int
1397 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1398 {
1399 int bytes;
1400
1401 if (adp != vesa_adp)
1402 return (*prevvidsw->ioctl)(adp, cmd, arg);
1403
1404 switch (cmd) {
1405 case FBIO_SETWINORG: /* set frame buffer window origin */
1406 if (!VESA_MODE(adp->va_mode))
1407 return (*prevvidsw->ioctl)(adp, cmd, arg);
1408 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1409
1410 case FBIO_SETDISPSTART: /* set display start address */
1411 if (!VESA_MODE(adp->va_mode))
1412 return (*prevvidsw->ioctl)(adp, cmd, arg);
1413 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1414 ((video_display_start_t *)arg)->y))
1415 return ENODEV;
1416 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1417 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1418 return 0;
1419
1420 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1421 if (!VESA_MODE(adp->va_mode))
1422 return (*prevvidsw->ioctl)(adp, cmd, arg);
1423 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1424 return ENODEV;
1425 adp->va_line_width = bytes;
1426 #if VESA_DEBUG > 1
1427 printf("new line width:%d\n", adp->va_line_width);
1428 #endif
1429 return 0;
1430
1431 case FBIO_GETPALETTE: /* get color palette */
1432 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1433 ((video_color_palette_t *)arg)->count,
1434 ((video_color_palette_t *)arg)->red,
1435 ((video_color_palette_t *)arg)->green,
1436 ((video_color_palette_t *)arg)->blue,
1437 ((video_color_palette_t *)arg)->transparent))
1438 return (*prevvidsw->ioctl)(adp, cmd, arg);
1439 return 0;
1440
1441
1442 case FBIO_SETPALETTE: /* set color palette */
1443 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1444 ((video_color_palette_t *)arg)->count,
1445 ((video_color_palette_t *)arg)->red,
1446 ((video_color_palette_t *)arg)->green,
1447 ((video_color_palette_t *)arg)->blue,
1448 ((video_color_palette_t *)arg)->transparent))
1449 return (*prevvidsw->ioctl)(adp, cmd, arg);
1450 return 0;
1451
1452 case FBIOGETCMAP: /* get color palette */
1453 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1454 ((struct fbcmap *)arg)->count,
1455 ((struct fbcmap *)arg)->red,
1456 ((struct fbcmap *)arg)->green,
1457 ((struct fbcmap *)arg)->blue, NULL))
1458 return (*prevvidsw->ioctl)(adp, cmd, arg);
1459 return 0;
1460
1461 case FBIOPUTCMAP: /* set color palette */
1462 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1463 ((struct fbcmap *)arg)->count,
1464 ((struct fbcmap *)arg)->red,
1465 ((struct fbcmap *)arg)->green,
1466 ((struct fbcmap *)arg)->blue, NULL))
1467 return (*prevvidsw->ioctl)(adp, cmd, arg);
1468 return 0;
1469
1470 default:
1471 return (*prevvidsw->ioctl)(adp, cmd, arg);
1472 }
1473 }
1474
1475 static int
1476 vesa_diag(video_adapter_t *adp, int level)
1477 {
1478 int error;
1479
1480 /* call the previous handler first */
1481 error = (*prevvidsw->diag)(adp, level);
1482 if (error)
1483 return error;
1484
1485 if (adp != vesa_adp)
1486 return 1;
1487
1488 if (level <= 0)
1489 return 0;
1490
1491 return 0;
1492 }
1493
1494 static int
1495 vesa_bios_info(int level)
1496 {
1497 #if VESA_DEBUG > 1
1498 struct vesa_mode vmode;
1499 int i;
1500 #endif
1501
1502 /* general adapter information */
1503 printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1504 ((vesa_adp_info->v_version & 0xf000) >> 12) * 10
1505 + ((vesa_adp_info->v_version & 0x0f00) >> 8),
1506 ((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
1507 + (vesa_adp_info->v_version & 0x000f),
1508 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1509 vesa_vmodetab, vesa_adp_info->v_modetable);
1510 /* OEM string */
1511 if (vesa_oemstr != NULL)
1512 printf("VESA: %s\n", vesa_oemstr);
1513
1514 if (level <= 0)
1515 return 0;
1516
1517 if (vesa_adp_info->v_version >= 0x0200) {
1518 /* vender name, product name, product revision */
1519 printf("VESA: %s %s %s\n",
1520 (vesa_venderstr != NULL) ? vesa_venderstr : "unknown",
1521 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1522 (vesa_revstr != NULL) ? vesa_revstr : "?");
1523 }
1524
1525 #if VESA_DEBUG > 1
1526 /* mode information */
1527 for (i = 0;
1528 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1529 && (vesa_vmodetab[i] != 0xffff); ++i) {
1530 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1531 continue;
1532
1533 /* print something for diagnostic purpose */
1534 printf("VESA: mode:0x%03x, flags:0x%04x",
1535 vesa_vmodetab[i], vmode.v_modeattr);
1536 if (vmode.v_modeattr & V_MODEOPTINFO) {
1537 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1538 printf(", G %dx%dx%d %d, ",
1539 vmode.v_width, vmode.v_height,
1540 vmode.v_bpp, vmode.v_planes);
1541 } else {
1542 printf(", T %dx%d, ",
1543 vmode.v_width, vmode.v_height);
1544 }
1545 printf("font:%dx%d, ",
1546 vmode.v_cwidth, vmode.v_cheight);
1547 printf("pages:%d, mem:%d",
1548 vmode.v_ipages + 1, vmode.v_memmodel);
1549 }
1550 if (vmode.v_modeattr & V_MODELFB) {
1551 printf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1552 vmode.v_lfb, vmode.v_offscreen,
1553 vmode.v_offscreensize*1024);
1554 }
1555 printf("\n");
1556 printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1557 vmode.v_waseg, vmode.v_waattr,
1558 vmode.v_wbseg, vmode.v_wbattr);
1559 printf("size:%dk, gran:%dk\n",
1560 vmode.v_wsize, vmode.v_wgran);
1561 }
1562 #endif /* VESA_DEBUG > 1 */
1563
1564 return 0;
1565 }
1566
1567 /* module loading */
1568
1569 static int
1570 vesa_load(void)
1571 {
1572 int error;
1573 int s;
1574
1575 if (vesa_init_done)
1576 return 0;
1577
1578 /* locate a VGA adapter */
1579 s = spltty();
1580 vesa_adp = NULL;
1581 error = vesa_configure(0);
1582 splx(s);
1583
1584 if (error == 0)
1585 vesa_bios_info(bootverbose);
1586
1587 return error;
1588 }
1589
1590 static int
1591 vesa_unload(void)
1592 {
1593 u_char palette[256*3];
1594 int error;
1595 int bits;
1596 int s;
1597
1598 /* if the adapter is currently in a VESA mode, don't unload */
1599 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1600 return EBUSY;
1601 /*
1602 * FIXME: if there is at least one vty which is in a VESA mode,
1603 * we shouldn't be unloading! XXX
1604 */
1605
1606 s = spltty();
1607 if ((error = vesa_unload_ioctl()) == 0) {
1608 if (vesa_adp != NULL) {
1609 if (vesa_adp_info->v_flags & V_DAC8) {
1610 bits = vesa_bios_get_dac();
1611 if (bits > 6) {
1612 vesa_bios_save_palette(0, 256,
1613 palette, bits);
1614 vesa_bios_set_dac(6);
1615 vesa_bios_load_palette(0, 256,
1616 palette, 6);
1617 }
1618 }
1619 vesa_adp->va_flags &= ~V_ADP_VESA;
1620 vidsw[vesa_adp->va_index] = prevvidsw;
1621 }
1622 }
1623 splx(s);
1624
1625 return error;
1626 }
1627
1628 static int
1629 vesa_mod_event(module_t mod, int type, void *data)
1630 {
1631 switch (type) {
1632 case MOD_LOAD:
1633 return vesa_load();
1634 case MOD_UNLOAD:
1635 return vesa_unload();
1636 default:
1637 break;
1638 }
1639 return 0;
1640 }
1641
1642 static moduledata_t vesa_mod = {
1643 "vesa",
1644 vesa_mod_event,
1645 NULL,
1646 };
1647
1648 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1649
1650 #endif /* VGA_NO_MODE_CHANGE */
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