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d6d6f4ab9ee2cb027f6b7655cade17ce1c919ecc
[dragonfly.git] / sys / dev / video / i386 / vesa / vesa.c
blobd6d6f4ab9ee2cb027f6b7655cade17ce1c919ecc
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: src/sys/i386/isa/vesa.c,v 1.32.2.1 2002/08/13 02:42:33 rwatson Exp $
27 * $DragonFly: src/sys/dev/video/i386/vesa/vesa.c,v 1.25 2008/04/30 04:05:21 dillon Exp $
28 */
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 #include <sys/thread2.h>
42
43 #include <vm/vm.h>
44 #include <vm/vm_extern.h>
45 #include <vm/vm_kern.h>
46 #include <vm/pmap.h>
47
48 #include <machine/md_var.h>
49 #include <machine/vm86.h>
50 #include <machine/pc/bios.h>
51 #include <machine/pc/vesa.h>
52
53 #include <dev/video/fb/fbreg.h>
54 #include <dev/video/fb/vgareg.h>
55
56 #ifndef __i386__
57 #include <bus/isa/isareg.h>
58 #else
59 #include <bus/isa/i386/isa.h>
60 #endif
61
62 #define VESA_VIA_CLE266 "VIA CLE266\r\n"
63
64 #ifndef VESA_DEBUG
65 #define VESA_DEBUG 0
66 #endif
67
68 /* VESA video adapter state buffer stub */
69 struct adp_state {
70 int sig;
71 #define V_STATE_SIG 0x61736576
72 u_char regs[1];
73 };
74 typedef struct adp_state adp_state_t;
75
76 /* VESA video adapter */
77 static video_adapter_t *vesa_adp = NULL;
78 static int vesa_state_buf_size = 0;
79 #define VESA_VM86_BUFSIZE (3 * PAGE_SIZE)
80 static void *vesa_vm86_buf;
81
82 /* VESA functions */
83 #if 0
84 static int vesa_nop(void);
85 #endif
86 static int vesa_error(void);
87 static vi_probe_t vesa_probe;
88 static vi_init_t vesa_init;
89 static vi_get_info_t vesa_get_info;
90 static vi_query_mode_t vesa_query_mode;
91 static vi_set_mode_t vesa_set_mode;
92 static vi_save_font_t vesa_save_font;
93 static vi_load_font_t vesa_load_font;
94 static vi_show_font_t vesa_show_font;
95 static vi_save_palette_t vesa_save_palette;
96 static vi_load_palette_t vesa_load_palette;
97 static vi_set_border_t vesa_set_border;
98 static vi_save_state_t vesa_save_state;
99 static vi_load_state_t vesa_load_state;
100 static vi_set_win_org_t vesa_set_origin;
101 static vi_read_hw_cursor_t vesa_read_hw_cursor;
102 static vi_set_hw_cursor_t vesa_set_hw_cursor;
103 static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
104 static vi_blank_display_t vesa_blank_display;
105 static vi_mmap_t vesa_mmap;
106 static vi_ioctl_t vesa_ioctl;
107 static vi_clear_t vesa_clear;
108 static vi_fill_rect_t vesa_fill_rect;
109 static vi_bitblt_t vesa_bitblt;
110 static vi_diag_t vesa_diag;
111 static int vesa_bios_info(int level);
112 static struct vm86context vesa_vmcontext;
113
114 static video_switch_t vesavidsw = {
115 vesa_probe,
116 vesa_init,
117 vesa_get_info,
118 vesa_query_mode,
119 vesa_set_mode,
120 vesa_save_font,
121 vesa_load_font,
122 vesa_show_font,
123 vesa_save_palette,
124 vesa_load_palette,
125 vesa_set_border,
126 vesa_save_state,
127 vesa_load_state,
128 vesa_set_origin,
129 vesa_read_hw_cursor,
130 vesa_set_hw_cursor,
131 vesa_set_hw_cursor_shape,
132 vesa_blank_display,
133 vesa_mmap,
134 vesa_ioctl,
135 vesa_clear,
136 vesa_fill_rect,
137 vesa_bitblt,
138 vesa_error,
139 vesa_error,
140 vesa_diag,
141 };
142
143 static video_switch_t *prevvidsw;
144
145 /* VESA BIOS video modes */
146 #define EOT (-1)
147 #define NA (-2)
148
149 #define MODE_TABLE_DELTA 8
150
151 static int vesa_vmode_max = 0;
152 static video_info_t vesa_vmode_empty = { EOT };
153 static video_info_t *vesa_vmode = &vesa_vmode_empty;
154
155 static int vesa_init_done = FALSE;
156 static int has_vesa_bios = FALSE;
157 static int dpms_states;
158 static struct vesa_info *vesa_adp_info = NULL;
159 static uint16_t *vesa_vmodetab = NULL;
160 static char *vesa_oemstr = NULL;
161 static char *vesa_vendorstr = NULL;
162 static char *vesa_prodstr = NULL;
163 static char *vesa_revstr = NULL;
164
165 /* local macros and functions */
166 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
167
168 static int int10_set_mode(int mode);
169 static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
170 static int vesa_bios_set_mode(int mode);
171 static int vesa_bios_get_dac(void);
172 static int vesa_bios_set_dac(int bits);
173 static int vesa_bios_save_palette(int start, int colors, u_char *palette,
174 int bits);
175 static int vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g,
176 u_char *b, int bits);
177 static int vesa_bios_load_palette(int start, int colors, const u_char *palette,
178 int bits);
179 #ifdef notyet
180 static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
181 u_char *b, int bits);
182 #endif
183 #define STATE_SIZE 0
184 #define STATE_SAVE 1
185 #define STATE_LOAD 2
186 #define STATE_HW (1<<0)
187 #define STATE_DATA (1<<1)
188 #define STATE_DAC (1<<2)
189 #define STATE_REG (1<<3)
190 #define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
191 #define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
192 static int vesa_bios_state_buf_size(void);
193 static int vesa_bios_save_restore(int code, void *p, size_t size);
194 static int vesa_bios_get_line_length(void);
195 static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
196 #if 0
197 static int vesa_bios_get_start(int *x, int *y);
198 #endif
199 static int vesa_bios_set_start(int x, int y);
200 static int vesa_translate_flags(uint16_t vflags);
201 static int vesa_translate_mmodel(uint8_t vmodel);
202 static void *vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off,
203 u_char *buf);
204 static int vesa_bios_init(void);
205 static vm_offset_t vesa_map_buffer(u_int paddr, size_t size);
206 static void vesa_unmap_buffer(vm_offset_t vaddr, size_t size);
207 static int vesa_probe_dpms(void);
208
209 #if 0
210 static int vesa_get_origin(video_adapter_t *adp, off_t *offset);
211 #endif
212
213 static void
214 dump_buffer(u_char *buf, size_t len)
215 {
216 int i;
217
218 for (i = 0; i < len;) {
219 kprintf("%02x ", buf[i]);
220 if ((++i % 16) == 0)
221 kprintf("\n");
222 }
223 }
224
225 /* INT 10 BIOS calls */
226 static int
227 int10_set_mode(int mode)
228 {
229 struct vm86frame vmf;
230
231 bzero(&vmf, sizeof(vmf));
232 vmf.vmf_eax = 0x0000 | mode;
233 vm86_intcall(0x10, &vmf);
234 return 0;
235 }
236
237 /* VESA BIOS calls */
238 static int
239 vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
240 {
241 struct vm86frame vmf;
242 u_char *buf;
243 int err;
244
245 bzero(&vmf, sizeof(vmf));
246 vmf.vmf_eax = 0x4f01;
247 vmf.vmf_ecx = mode;
248 buf = vesa_vm86_buf;
249 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_di);
250
251 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
252 if ((err != 0) || (vmf.vmf_ax != 0x4f))
253 return 1;
254 bcopy(buf, vmode, sizeof(*vmode));
255 return 0;
256 }
257
258 static int
259 vesa_bios_set_mode(int mode)
260 {
261 struct vm86frame vmf;
262 int err;
263
264 bzero(&vmf, sizeof(vmf));
265 vmf.vmf_eax = 0x4f02;
266 vmf.vmf_ebx = mode;
267 err = vm86_intcall(0x10, &vmf);
268 return ((err != 0) || (vmf.vmf_ax != 0x4f));
269 }
270
271 static int
272 vesa_bios_get_dac(void)
273 {
274 struct vm86frame vmf;
275 int err;
276
277 bzero(&vmf, sizeof(vmf));
278 vmf.vmf_eax = 0x4f08;
279 vmf.vmf_ebx = 1; /* get DAC width */
280 err = vm86_intcall(0x10, &vmf);
281 if ((err != 0) || (vmf.vmf_ax != 0x4f))
282 return 6; /* XXX */
283 return ((vmf.vmf_ebx >> 8) & 0x00ff);
284 }
285
286 static int
287 vesa_bios_set_dac(int bits)
288 {
289 struct vm86frame vmf;
290 int err;
291
292 bzero(&vmf, sizeof(vmf));
293 vmf.vmf_eax = 0x4f08;
294 vmf.vmf_ebx = (bits << 8);
295 err = vm86_intcall(0x10, &vmf);
296 if ((err != 0) || (vmf.vmf_ax != 0x4f))
297 return 6; /* XXX */
298 return ((vmf.vmf_ebx >> 8) & 0x00ff);
299 }
300
301 static int
302 vesa_bios_save_palette(int start, int colors, u_char *palette, int bits)
303 {
304 struct vm86frame vmf;
305 u_char *p;
306 int err;
307 int i;
308
309 bzero(&vmf, sizeof(vmf));
310 vmf.vmf_eax = 0x4f09;
311 vmf.vmf_ebx = 1; /* get primary palette data */
312 vmf.vmf_ecx = colors;
313 vmf.vmf_edx = start;
314 p = vesa_vm86_buf;
315 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
316
317 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
318 if ((err != 0) || (vmf.vmf_ax != 0x4f))
319 return 1;
320
321 bits = 8 - bits;
322 for (i = 0; i < colors; ++i) {
323 palette[i*3] = p[i*4 + 2] << bits;
324 palette[i*3 + 1] = p[i*4 + 1] << bits;
325 palette[i*3 + 2] = p[i*4] << bits;
326 }
327 return 0;
328 }
329
330 static int
331 vesa_bios_save_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
332 int bits)
333 {
334 struct vm86frame vmf;
335 u_char *p;
336 int err;
337 int i;
338
339 bzero(&vmf, sizeof(vmf));
340 vmf.vmf_eax = 0x4f09;
341 vmf.vmf_ebx = 1; /* get primary palette data */
342 vmf.vmf_ecx = colors;
343 vmf.vmf_edx = start;
344 p = vesa_vm86_buf;
345 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
346
347 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
348 if ((err != 0) || (vmf.vmf_ax != 0x4f))
349 return 1;
350
351 bits = 8 - bits;
352 for (i = 0; i < colors; ++i) {
353 r[i] = p[i*4 + 2] << bits;
354 g[i] = p[i*4 + 1] << bits;
355 b[i] = p[i*4] << bits;
356 }
357 return 0;
358 }
359
360 static int
361 vesa_bios_load_palette(int start, int colors, const u_char *palette, int bits)
362 {
363 struct vm86frame vmf;
364 u_char *p;
365 int err;
366 int i;
367
368 p = vesa_vm86_buf;
369 bits = 8 - bits;
370 for (i = 0; i < colors; ++i) {
371 p[i*4] = palette[i*3 + 2] >> bits;
372 p[i*4 + 1] = palette[i*3 + 1] >> bits;
373 p[i*4 + 2] = palette[i*3] >> bits;
374 p[i*4 + 3] = 0;
375 }
376
377 bzero(&vmf, sizeof(vmf));
378 vmf.vmf_eax = 0x4f09;
379 vmf.vmf_ebx = 0; /* set primary palette data */
380 vmf.vmf_ecx = colors;
381 vmf.vmf_edx = start;
382 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
383
384 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
385 return ((err != 0) || (vmf.vmf_ax != 0x4f));
386 }
387
388 #ifdef notyet
389 static int
390 vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g, u_char *b,
391 int bits)
392 {
393 struct vm86frame vmf;
394 u_char *p;
395 int err;
396 int i;
397
398 p = vesa_vm86_buf;
399 bits = 8 - bits;
400 for (i = 0; i < colors; ++i) {
401 p[i*4] = b[i] >> bits;
402 p[i*4 + 1] = g[i] >> bits;
403 p[i*4 + 2] = r[i] >> bits;
404 p[i*4 + 3] = 0;
405 }
406
407 bzero(&vmf, sizeof(vmf));
408 vmf.vmf_eax = 0x4f09;
409 vmf.vmf_ebx = 0; /* set primary palette data */
410 vmf.vmf_ecx = colors;
411 vmf.vmf_edx = start;
412 vm86_getptr(&vesa_vmcontext, (vm_offset_t)p, &vmf.vmf_es, &vmf.vmf_di);
413
414 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
415 return ((err != 0) || (vmf.vmf_ax != 0x4f));
416 }
417 #endif
418
419 static int
420 vesa_bios_state_buf_size(void)
421 {
422 struct vm86frame vmf;
423 int err;
424
425 bzero(&vmf, sizeof(vmf));
426 vmf.vmf_eax = 0x4f04;
427 vmf.vmf_ecx = STATE_ALL;
428 vmf.vmf_edx = STATE_SIZE;
429 err = vm86_intcall(0x10, &vmf);
430 if ((err != 0) || (vmf.vmf_ax != 0x4f))
431 return 0;
432 return vmf.vmf_bx*64;
433 }
434
435 static int
436 vesa_bios_save_restore(int code, void *p, size_t size)
437 {
438 struct vm86frame vmf;
439 u_char *buf;
440 int err;
441
442 if (size > VESA_VM86_BUFSIZE)
443 return (1);
444
445 bzero(&vmf, sizeof(vmf));
446 vmf.vmf_eax = 0x4f04;
447 vmf.vmf_ecx = STATE_ALL;
448 vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
449 buf = vesa_vm86_buf;
450 vm86_getptr(&vesa_vmcontext, (vm_offset_t)buf, &vmf.vmf_es, &vmf.vmf_bx);
451 bcopy(p, buf, size);
452
453 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
454 bcopy(buf, p, size);
455 return ((err != 0) || (vmf.vmf_ax != 0x4f));
456 }
457
458 static int
459 vesa_bios_get_line_length(void)
460 {
461 struct vm86frame vmf;
462 int err;
463
464 bzero(&vmf, sizeof(vmf));
465 vmf.vmf_eax = 0x4f06;
466 vmf.vmf_ebx = 1; /* get scan line length */
467 err = vm86_intcall(0x10, &vmf);
468 if ((err != 0) || (vmf.vmf_ax != 0x4f))
469 return -1;
470 return vmf.vmf_bx; /* line length in bytes */
471 }
472
473 static int
474 vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
475 {
476 struct vm86frame vmf;
477 int err;
478
479 bzero(&vmf, sizeof(vmf));
480 vmf.vmf_eax = 0x4f06;
481 vmf.vmf_ebx = 0; /* set scan line length in pixel */
482 vmf.vmf_ecx = pixel;
483 err = vm86_intcall(0x10, &vmf);
484 #if VESA_DEBUG > 1
485 kprintf("bx:%d, cx:%d, dx:%d\n", vmf.vmf_bx, vmf.vmf_cx, vmf.vmf_dx);
486 #endif
487 if ((err != 0) || (vmf.vmf_ax != 0x4f))
488 return 1;
489 if (bytes)
490 *bytes = vmf.vmf_bx;
491 if (lines)
492 *lines = vmf.vmf_dx;
493 return 0;
494 }
495
496 #if 0
497 static int
498 vesa_bios_get_start(int *x, int *y)
499 {
500 struct vm86frame vmf;
501 int err;
502
503 bzero(&vmf, sizeof(vmf));
504 vmf.vmf_eax = 0x4f07;
505 vmf.vmf_ebx = 1; /* get display start */
506 err = vm86_intcall(0x10, &vmf);
507 if ((err != 0) || (vmf.vmf_ax != 0x4f))
508 return 1;
509 *x = vmf.vmf_cx;
510 *y = vmf.vmf_dx;
511 return 0;
512 }
513 #endif
514
515 static int
516 vesa_bios_set_start(int x, int y)
517 {
518 struct vm86frame vmf;
519 int err;
520
521 bzero(&vmf, sizeof(vmf));
522 vmf.vmf_eax = 0x4f07;
523 vmf.vmf_ebx = 0x80; /* set display start */
524 vmf.vmf_edx = y;
525 vmf.vmf_ecx = x;
526 err = vm86_intcall(0x10, &vmf);
527 return ((err != 0) || (vmf.vmf_ax != 0x4f));
528 }
529
530 static int
531 vesa_translate_flags(uint16_t vflags)
532 {
533 static struct {
534 uint16_t mask;
535 int set;
536 int reset;
537 } ftable[] = {
538 { V_MODECOLOR, V_INFO_COLOR, 0 },
539 { V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
540 { V_MODELFB, V_INFO_LINEAR, 0 },
541 };
542 int flags;
543 int i;
544
545 for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
546 flags |= (vflags & ftable[i].mask) ?
547 ftable[i].set : ftable[i].reset;
548 }
549 return flags;
550 }
551
552 static int
553 vesa_translate_mmodel(uint8_t vmodel)
554 {
555 static struct {
556 uint8_t vmodel;
557 int mmodel;
558 } mtable[] = {
559 { V_MMTEXT, V_INFO_MM_TEXT },
560 { V_MMCGA, V_INFO_MM_CGA },
561 { V_MMHGC, V_INFO_MM_HGC },
562 { V_MMEGA, V_INFO_MM_PLANAR },
563 { V_MMPACKED, V_INFO_MM_PACKED },
564 { V_MMDIRCOLOR, V_INFO_MM_DIRECT },
565 };
566 int i;
567
568 for (i = 0; mtable[i].mmodel >= 0; ++i) {
569 if (mtable[i].vmodel == vmodel)
570 return mtable[i].mmodel;
571 }
572 return V_INFO_MM_OTHER;
573 }
574
575 static void *
576 vesa_fix_ptr(uint32_t p, uint16_t seg, uint16_t off, u_char *buf)
577 {
578 if (p == 0)
579 return NULL;
580 if (((p >> 16) == seg) && ((p & 0xffff) >= off))
581 return (void *)(buf + ((p & 0xffff) - off));
582 else {
583 p = BIOS_SADDRTOLADDR(p);
584 return (void *)BIOS_PADDRTOVADDR(p);
585 }
586 }
587
588 static int
589 vesa_bios_init(void)
590 {
591 static u_char buf[512];
592 struct vm86frame vmf;
593 struct vesa_mode vmode;
594 video_info_t *p;
595 u_char *vmbuf;
596 int is_via_cle266;
597 int modes;
598 int err;
599 int i;
600
601 if (vesa_init_done)
602 return 0;
603
604 has_vesa_bios = FALSE;
605 vesa_adp_info = NULL;
606 vesa_vmode_max = 0;
607 vesa_vmode[0].vi_mode = EOT;
608
609 /* Allocate a buffer and add each page to the vm86 context. */
610 vesa_vm86_buf = kmalloc(VESA_VM86_BUFSIZE, M_DEVBUF, M_WAITOK | M_ZERO);
611 KASSERT(((vm_offset_t)vesa_vm86_buf & PAGE_MASK) == 0,
612 ("bad vesa_vm86_buf alignment"));
613 for (i = 0; i < howmany(VESA_VM86_BUFSIZE, PAGE_SIZE); i++)
614 vm86_addpage(&vesa_vmcontext, i + 1,
615 (vm_offset_t)vesa_vm86_buf + PAGE_SIZE * i);
616
617 vmbuf = vesa_vm86_buf;
618 bzero(&vmf, sizeof(vmf)); /* paranoia */
619 bcopy("VBE2", vmbuf, 4); /* try for VBE2 data */
620 vmf.vmf_eax = 0x4f00;
621 vm86_getptr(&vesa_vmcontext, (vm_offset_t)vmbuf, &vmf.vmf_es, &vmf.vmf_di);
622
623 err = vm86_datacall(0x10, &vmf, &vesa_vmcontext);
624 if ((err != 0) || (vmf.vmf_ax != 0x4f) || bcmp("VESA", vmbuf, 4))
625 return 1;
626 bcopy(vmbuf, buf, sizeof(buf));
627 vesa_adp_info = (struct vesa_info *)buf;
628 if (bootverbose) {
629 kprintf("VESA: information block\n");
630 dump_buffer(buf, 64);
631 }
632 if (vesa_adp_info->v_version < 0x0102) {
633 kprintf("VESA: VBE version %d.%d is not supported; "
634 "version 1.2 or later is required.\n",
635 bcd2bin((vesa_adp_info->v_version & 0xff00) >> 8),
636 bcd2bin(vesa_adp_info->v_version & 0x00ff));
637 return 1;
638 }
639
640 /* fix string ptrs */
641 vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
642 vmf.vmf_es, vmf.vmf_di, buf);
643 is_via_cle266 = strcmp(vesa_oemstr, VESA_VIA_CLE266) == 0;
644
645 if (vesa_adp_info->v_version >= 0x0200) {
646 vesa_vendorstr =
647 (char *)vesa_fix_ptr(vesa_adp_info->v_vendorstr,
648 vmf.vmf_es, vmf.vmf_di, buf);
649 vesa_prodstr =
650 (char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
651 vmf.vmf_es, vmf.vmf_di, buf);
652 vesa_revstr =
653 (char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
654 vmf.vmf_es, vmf.vmf_di, buf);
655 }
656
657 /* obtain video mode information */
658 vesa_vmodetab = (uint16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
659 vmf.vmf_es, vmf.vmf_di, buf);
660 if (vesa_vmodetab == NULL)
661 return 1;
662 for (i = 0, modes = 0;
663 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
664 && (vesa_vmodetab[i] != 0xffff); ++i) {
665 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
666 continue;
667
668 /* reject unsupported modes */
669 if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO)) !=
670 (V_MODESUPP | V_MODEOPTINFO)) {
671 #if VESA_DEBUG > 1
672 kprintf("Rejecting VESA %s mode: %d x %d x %d bpp attr = %x\n",
673 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
674 vmode.v_width, vmode.v_height, vmode.v_bpp,
675 vmode.v_modeattr);
676 #endif
677 continue;
678 }
679
680 /* expand the array if necessary */
681 if (modes >= vesa_vmode_max) {
682 vesa_vmode_max += MODE_TABLE_DELTA;
683 p = kmalloc(sizeof(*vesa_vmode)*(vesa_vmode_max + 1),
684 M_DEVBUF, M_WAITOK);
685 #if VESA_DEBUG > 1
686 kprintf("vesa_bios_init(): modes:%d, vesa_mode_max:%d\n",
687 modes, vesa_vmode_max);
688 #endif
689 if (modes > 0) {
690 bcopy(vesa_vmode, p, sizeof(*vesa_vmode)*modes);
691 kfree(vesa_vmode, M_DEVBUF);
692 }
693 vesa_vmode = p;
694 }
695
696 #if VESA_DEBUG > 1
697 kprintf("Found VESA %s mode: %d x %d x %d bpp\n",
698 vmode.v_modeattr & V_MODEGRAPHICS ? "graphics" : "text",
699 vmode.v_width, vmode.v_height, vmode.v_bpp);
700 #endif
701 if (is_via_cle266) {
702 if ((vmode.v_width & 0xff00) >> 8 == vmode.v_height - 1) {
703 vmode.v_width &= 0xff;
704 vmode.v_waseg = 0xb8000 >> 4;
705 }
706 }
707
708 /* copy some fields */
709 bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
710 vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
711 vesa_vmode[modes].vi_width = vmode.v_width;
712 vesa_vmode[modes].vi_height = vmode.v_height;
713 vesa_vmode[modes].vi_depth = vmode.v_bpp;
714 vesa_vmode[modes].vi_planes = vmode.v_planes;
715 vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
716 vesa_vmode[modes].vi_cheight = vmode.v_cheight;
717 vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
718 /* XXX window B */
719 vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
720 vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
721 if (vmode.v_modeattr & V_MODELFB)
722 vesa_vmode[modes].vi_buffer = vmode.v_lfb;
723 else
724 vesa_vmode[modes].vi_buffer = 0;
725 /* XXX */
726 vesa_vmode[modes].vi_buffer_size
727 = vesa_adp_info->v_memsize*64*1024;
728 #if 0
729 if (vmode.v_offscreen > vmode.v_lfb)
730 vesa_vmode[modes].vi_buffer_size
731 = vmode.v_offscreen + vmode.v_offscreensize*1024
732 - vmode.v_lfb;
733 else
734 vesa_vmode[modes].vi_buffer_size
735 = vmode.v_offscreen + vmode.v_offscreensize*1024
736 #endif
737 vesa_vmode[modes].vi_mem_model
738 = vesa_translate_mmodel(vmode.v_memmodel);
739 vesa_vmode[modes].vi_pixel_fields[0] = 0;
740 vesa_vmode[modes].vi_pixel_fields[1] = 0;
741 vesa_vmode[modes].vi_pixel_fields[2] = 0;
742 vesa_vmode[modes].vi_pixel_fields[3] = 0;
743 vesa_vmode[modes].vi_pixel_fsizes[0] = 0;
744 vesa_vmode[modes].vi_pixel_fsizes[1] = 0;
745 vesa_vmode[modes].vi_pixel_fsizes[2] = 0;
746 vesa_vmode[modes].vi_pixel_fsizes[3] = 0;
747 if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_PACKED) {
748 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
749 } else if (vesa_vmode[modes].vi_mem_model == V_INFO_MM_DIRECT) {
750 vesa_vmode[modes].vi_pixel_size = (vmode.v_bpp + 7)/8;
751 vesa_vmode[modes].vi_pixel_fields[0]
752 = vmode.v_redfieldpos;
753 vesa_vmode[modes].vi_pixel_fields[1]
754 = vmode.v_greenfieldpos;
755 vesa_vmode[modes].vi_pixel_fields[2]
756 = vmode.v_bluefieldpos;
757 vesa_vmode[modes].vi_pixel_fields[3]
758 = vmode.v_resfieldpos;
759 vesa_vmode[modes].vi_pixel_fsizes[0]
760 = vmode.v_redmasksize;
761 vesa_vmode[modes].vi_pixel_fsizes[1]
762 = vmode.v_greenmasksize;
763 vesa_vmode[modes].vi_pixel_fsizes[2]
764 = vmode.v_bluemasksize;
765 vesa_vmode[modes].vi_pixel_fsizes[3]
766 = vmode.v_resmasksize;
767 } else {
768 vesa_vmode[modes].vi_pixel_size = 0;
769 }
770
771 vesa_vmode[modes].vi_flags
772 = vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
773 ++modes;
774 }
775 vesa_vmode[modes].vi_mode = EOT;
776 if (bootverbose)
777 kprintf("VESA: %d mode(s) found\n", modes);
778
779 has_vesa_bios = (modes > 0);
780 if (!has_vesa_bios)
781 return (1);
782
783 dpms_states = vesa_probe_dpms();
784 if (dpms_states != 0 && bootverbose)
785 kprintf("VESA: DPMS support (states:0x%x)\n", dpms_states);
786
787 return (0);
788 }
789
790 static vm_offset_t
791 vesa_map_buffer(u_int paddr, size_t size)
792 {
793 vm_offset_t vaddr;
794 u_int off;
795
796 off = paddr - trunc_page(paddr);
797 vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
798 #if VESA_DEBUG > 1
799 kprintf("vesa_map_buffer: paddr:%x vaddr:%x size:%x off:%x\n",
800 paddr, vaddr, size, off);
801 #endif
802 return (vaddr + off);
803 }
804
805 static void
806 vesa_unmap_buffer(vm_offset_t vaddr, size_t size)
807 {
808 #if VESA_DEBUG > 1
809 kprintf("vesa_unmap_buffer: vaddr:%x size:%x\n", vaddr, size);
810 #endif
811 pmap_unmapdev(vaddr, size);
812 }
813
814 /*
815 * vesa_probe_dpms
816 *
817 * Probe DPMS support and return the supported states.
818 */
819
820 static int
821 vesa_probe_dpms(void)
822 {
823 struct vm86frame vmf;
824 int err;
825
826 bzero(&vmf, sizeof(vmf));
827 vmf.vmf_eax = 0x4f10;
828
829 err = vm86_intcall(0x10, &vmf);
830 if ((err != 0) || (vmf.vmf_ax != 0x4f))
831 return -1; /* no support */
832
833 return (vmf.vmf_ebx >> 8);
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 i;
844
845 if (vesa_init_done)
846 return 0;
847 if (flags & VIO_PROBE_ONLY)
848 return 0; /* XXX */
849
850 /*
851 * If the VESA module has already been loaded, abort loading
852 * the module this time.
853 */
854 for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
855 if (adp->va_flags & V_ADP_VESA)
856 return ENXIO;
857 if (adp->va_type == KD_VGA)
858 break;
859 }
860 /*
861 * The VGA adapter is not found. This is because either
862 * 1) the VGA driver has not been initialized, or 2) the VGA card
863 * is not present. If 1) is the case, we shall defer
864 * initialization for now and try again later.
865 */
866 if (adp == NULL) {
867 vga_sub_configure = vesa_configure;
868 return ENODEV;
869 }
870
871 /* count number of registered adapters */
872 for (++i; vid_get_adapter(i) != NULL; ++i)
873 ;
874 adapters = i;
875
876 /* call VESA BIOS */
877 vesa_adp = adp;
878 if (vesa_bios_init()) {
879 vesa_adp = NULL;
880 return ENXIO;
881 }
882 vesa_adp->va_flags |= V_ADP_VESA | V_ADP_COLOR;
883
884 prevvidsw = vidsw[vesa_adp->va_index];
885 vidsw[vesa_adp->va_index] = &vesavidsw;
886 vesa_init_done = TRUE;
887 return 0;
888 }
889
890 #if 0
891 static int
892 vesa_nop(void)
893 {
894 return 0;
895 }
896 #endif
897
898 static int
899 vesa_error(void)
900 {
901 return 1;
902 }
903
904 static int
905 vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
906 {
907 return (*prevvidsw->probe)(unit, adpp, arg, flags);
908 }
909
910 static int
911 vesa_init(int unit, video_adapter_t *adp, int flags)
912 {
913 return (*prevvidsw->init)(unit, adp, flags);
914 }
915
916 static int
917 vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
918 {
919 int i;
920
921 if ((*prevvidsw->get_info)(adp, mode, info) == 0)
922 return 0;
923
924 if (adp != vesa_adp)
925 return 1;
926
927 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
928 if (vesa_vmode[i].vi_mode == NA)
929 continue;
930 if (vesa_vmode[i].vi_mode == mode) {
931 *info = vesa_vmode[i];
932 return 0;
933 }
934 }
935 return 1;
936 }
937
938 static int
939 vesa_query_mode(video_adapter_t *adp, video_info_t *info)
940 {
941 int i;
942
943 if ((*prevvidsw->query_mode)(adp, info) == 0)
944 return 0;
945 if (adp != vesa_adp)
946 return ENODEV;
947
948 for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
949 if ((info->vi_width != 0)
950 && (info->vi_width != vesa_vmode[i].vi_width))
951 continue;
952 if ((info->vi_height != 0)
953 && (info->vi_height != vesa_vmode[i].vi_height))
954 continue;
955 if ((info->vi_cwidth != 0)
956 && (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
957 continue;
958 if ((info->vi_cheight != 0)
959 && (info->vi_cheight != vesa_vmode[i].vi_cheight))
960 continue;
961 if ((info->vi_depth != 0)
962 && (info->vi_depth != vesa_vmode[i].vi_depth))
963 continue;
964 if ((info->vi_planes != 0)
965 && (info->vi_planes != vesa_vmode[i].vi_planes))
966 continue;
967 /* pixel format, memory model */
968 if ((info->vi_flags != 0)
969 && (info->vi_flags != vesa_vmode[i].vi_flags))
970 continue;
971 *info = vesa_vmode[i];
972 return 0;
973 }
974 return ENODEV;
975 }
976
977 static int
978 vesa_set_mode(video_adapter_t *adp, int mode)
979 {
980 video_info_t info;
981 int len;
982
983 if (adp != vesa_adp)
984 return (*prevvidsw->set_mode)(adp, mode);
985
986 #if VESA_DEBUG > 0
987 kprintf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
988 adp->va_mode, adp->va_mode, mode, mode);
989 #endif
990 /*
991 * If the current mode is a VESA mode and the new mode is not,
992 * restore the state of the adapter first by setting one of the
993 * standard VGA mode, so that non-standard, extended SVGA registers
994 * are set to the state compatible with the standard VGA modes.
995 * Otherwise (*prevvidsw->set_mode)() may not be able to set up
996 * the new mode correctly.
997 */
998 if (VESA_MODE(adp->va_mode)) {
999 if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
1000 int10_set_mode(adp->va_initial_bios_mode);
1001 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1002 vesa_unmap_buffer(adp->va_buffer,
1003 vesa_adp_info->v_memsize*64*1024);
1004 /*
1005 * Once (*prevvidsw->get_info)() succeeded,
1006 * (*prevvidsw->set_mode)() below won't fail...
1007 */
1008 }
1009 }
1010
1011 /* we may not need to handle this mode after all... */
1012 if ((*prevvidsw->set_mode)(adp, mode) == 0)
1013 return 0;
1014
1015 /* is the new mode supported? */
1016 if (vesa_get_info(adp, mode, &info))
1017 return 1;
1018 /* assert(VESA_MODE(mode)); */
1019
1020 #if VESA_DEBUG > 0
1021 kprintf("VESA: about to set a VESA mode...\n");
1022 #endif
1023 /* don't use the linear frame buffer for text modes. XXX */
1024 if (!(info.vi_flags & V_INFO_GRAPHICS))
1025 info.vi_flags &= ~V_INFO_LINEAR;
1026
1027 if (vesa_bios_set_mode(mode | ((info.vi_flags & V_INFO_LINEAR) ? 0x4000 : 0)))
1028 return 1;
1029
1030 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1031 vesa_unmap_buffer(adp->va_buffer,
1032 vesa_adp_info->v_memsize*64*1024);
1033
1034 #if VESA_DEBUG > 0
1035 kprintf("VESA: mode set!\n");
1036 #endif
1037 vesa_adp->va_mode = mode;
1038 if (info.vi_flags & V_INFO_LINEAR) {
1039 #if VESA_DEBUG > 1
1040 kprintf("VESA: setting up LFB\n");
1041 #endif
1042 vesa_adp->va_buffer =
1043 vesa_map_buffer(info.vi_buffer,
1044 vesa_adp_info->v_memsize*64*1024);
1045 vesa_adp->va_buffer_size = info.vi_buffer_size;
1046 vesa_adp->va_window = vesa_adp->va_buffer;
1047 vesa_adp->va_window_size = info.vi_buffer_size/info.vi_planes;
1048 vesa_adp->va_window_gran = info.vi_buffer_size/info.vi_planes;
1049 } else {
1050 vesa_adp->va_buffer = 0;
1051 vesa_adp->va_buffer_size = info.vi_buffer_size;
1052 vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
1053 vesa_adp->va_window_size = info.vi_window_size;
1054 vesa_adp->va_window_gran = info.vi_window_gran;
1055 }
1056 vesa_adp->va_window_orig = 0;
1057 len = vesa_bios_get_line_length();
1058 if (len > 0) {
1059 vesa_adp->va_line_width = len;
1060 } else if (info.vi_flags & V_INFO_GRAPHICS) {
1061 switch (info.vi_depth/info.vi_planes) {
1062 case 1:
1063 vesa_adp->va_line_width = info.vi_width/8;
1064 break;
1065 case 2:
1066 vesa_adp->va_line_width = info.vi_width/4;
1067 break;
1068 case 4:
1069 vesa_adp->va_line_width = info.vi_width/2;
1070 break;
1071 case 8:
1072 default: /* shouldn't happen */
1073 vesa_adp->va_line_width = info.vi_width;
1074 break;
1075 }
1076 } else {
1077 vesa_adp->va_line_width = info.vi_width;
1078 }
1079 vesa_adp->va_disp_start.x = 0;
1080 vesa_adp->va_disp_start.y = 0;
1081 #if VESA_DEBUG > 0
1082 kprintf("vesa_set_mode(): vi_width:%d, len:%d, line_width:%d\n",
1083 info.vi_width, len, vesa_adp->va_line_width);
1084 #endif
1085 bcopy(&info, &vesa_adp->va_info, sizeof(vesa_adp->va_info));
1086
1087 /* move hardware cursor out of the way */
1088 (*vidsw[vesa_adp->va_index]->set_hw_cursor)(vesa_adp, -1, -1);
1089
1090 return 0;
1091 }
1092
1093 static int
1094 vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1095 int ch, int count)
1096 {
1097 return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
1098 }
1099
1100 static int
1101 vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1102 int ch, int count)
1103 {
1104 return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
1105 }
1106
1107 static int
1108 vesa_show_font(video_adapter_t *adp, int page)
1109 {
1110 return (*prevvidsw->show_font)(adp, page);
1111 }
1112
1113 static int
1114 vesa_save_palette(video_adapter_t *adp, u_char *palette)
1115 {
1116 int bits;
1117 int error;
1118
1119 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1120 && VESA_MODE(adp->va_mode)) {
1121 bits = vesa_bios_get_dac();
1122 error = vesa_bios_save_palette(0, 256, palette, bits);
1123 if (error == 0)
1124 return 0;
1125 if (bits != 6)
1126 return error;
1127 }
1128
1129 return (*prevvidsw->save_palette)(adp, palette);
1130 }
1131
1132 static int
1133 vesa_load_palette(video_adapter_t *adp, const u_char *palette)
1134 {
1135 #if notyet
1136 int bits;
1137 int error;
1138
1139 if ((adp == vesa_adp) && (vesa_adp_info->v_flags & V_DAC8)
1140 && VESA_MODE(adp->va_mode) && ((bits = vesa_bios_set_dac(8)) > 6)) {
1141 error = vesa_bios_load_palette(0, 256, palette, bits);
1142 if (error == 0)
1143 return 0;
1144 if (vesa_bios_set_dac(6) != 6)
1145 return 1;
1146 }
1147 #endif /* notyet */
1148
1149 return (*prevvidsw->load_palette)(adp, palette);
1150 }
1151
1152 static int
1153 vesa_set_border(video_adapter_t *adp, int color)
1154 {
1155 return (*prevvidsw->set_border)(adp, color);
1156 }
1157
1158 static int
1159 vesa_save_state(video_adapter_t *adp, void *p, size_t size)
1160 {
1161 if (adp != vesa_adp)
1162 return (*prevvidsw->save_state)(adp, p, size);
1163
1164 if (vesa_state_buf_size == 0)
1165 vesa_state_buf_size = vesa_bios_state_buf_size();
1166 if (size == 0)
1167 return (sizeof(int) + vesa_state_buf_size);
1168 else if (size < (sizeof(int) + vesa_state_buf_size))
1169 return 1;
1170
1171 ((adp_state_t *)p)->sig = V_STATE_SIG;
1172 bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
1173 return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
1174 vesa_state_buf_size);
1175 }
1176
1177 static int
1178 vesa_load_state(video_adapter_t *adp, void *p)
1179 {
1180 if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
1181 return (*prevvidsw->load_state)(adp, p);
1182
1183 return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
1184 vesa_state_buf_size);
1185 }
1186
1187 #if 0
1188 static int
1189 vesa_get_origin(video_adapter_t *adp, off_t *offset)
1190 {
1191 struct vm86frame vmf;
1192 int err;
1193
1194 bzero(&vmf, sizeof(vmf));
1195 vmf.vmf_eax = 0x4f05;
1196 vmf.vmf_ebx = 0x10; /* WINDOW_A, XXX */
1197 err = vm86_intcall(0x10, &vmf);
1198 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1199 return 1;
1200 *offset = vmf.vmf_dx*adp->va_window_gran;
1201 return 0;
1202 }
1203 #endif
1204
1205 static int
1206 vesa_set_origin(video_adapter_t *adp, off_t offset)
1207 {
1208 struct vm86frame vmf;
1209 int err;
1210
1211 /*
1212 * This function should return as quickly as possible to
1213 * maintain good performance of the system. For this reason,
1214 * error checking is kept minimal and let the VESA BIOS to
1215 * detect error.
1216 */
1217 if (adp != vesa_adp)
1218 return (*prevvidsw->set_win_org)(adp, offset);
1219
1220 /* if this is a linear frame buffer, do nothing */
1221 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1222 return 0;
1223 /* XXX */
1224 if (adp->va_window_gran == 0)
1225 return 1;
1226
1227 bzero(&vmf, sizeof(vmf));
1228 vmf.vmf_eax = 0x4f05;
1229 vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
1230 vmf.vmf_edx = offset/adp->va_window_gran;
1231 err = vm86_intcall(0x10, &vmf);
1232 if ((err != 0) || (vmf.vmf_ax != 0x4f))
1233 return 1;
1234 bzero(&vmf, sizeof(vmf));
1235 vmf.vmf_eax = 0x4f05;
1236 vmf.vmf_ebx = 1; /* WINDOW_B, XXX */
1237 vmf.vmf_edx = offset/adp->va_window_gran;
1238 err = vm86_intcall(0x10, &vmf);
1239 adp->va_window_orig = (offset/adp->va_window_gran)*adp->va_window_gran;
1240 return 0; /* XXX */
1241 }
1242
1243 static int
1244 vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1245 {
1246 return (*prevvidsw->read_hw_cursor)(adp, col, row);
1247 }
1248
1249 static int
1250 vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
1251 {
1252 return (*prevvidsw->set_hw_cursor)(adp, col, row);
1253 }
1254
1255 static int
1256 vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1257 int celsize, int blink)
1258 {
1259 return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
1260 blink);
1261 }
1262
1263 /*
1264 * vesa_blank_display
1265 *
1266 * Use DPMS if it is supported by the adapter and supports the requested
1267 * state, else use the traditional VGA method. When unblanking, use both
1268 * methods because either might have put us into the blanked state previously.
1269 */
1270
1271 static int
1272 vesa_blank_display(video_adapter_t *adp, int mode)
1273 {
1274 struct vm86frame vmf;
1275 int err;
1276
1277 if (mode == V_DISPLAY_ON) {
1278 err = (*prevvidsw->blank_display)(adp, V_DISPLAY_ON);
1279 if (dpms_states == 0) {
1280 return err;
1281 } else {
1282 bzero(&vmf, sizeof(vmf));
1283 vmf.vmf_eax = 0x4f10;
1284 vmf.vmf_ebx = 1;
1285 err = vm86_intcall(0x10, &vmf);
1286 return ((err != 0) || (vmf.vmf_ax != 0x4f));
1287 }
1288 } else if (dpms_states & mode) {
1289 bzero(&vmf, sizeof(vmf));
1290 vmf.vmf_eax = 0x4f10;
1291 vmf.vmf_ebx = (mode << 8) | 1;
1292 err = vm86_intcall(0x10, &vmf);
1293 return ((err != 0) || (vmf.vmf_ax != 0x4f));
1294 }
1295
1296 return (*prevvidsw->blank_display)(adp, mode);
1297 }
1298
1299 static int
1300 vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
1301 {
1302 #if VESA_DEBUG > 0
1303 kprintf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
1304 adp->va_info.vi_window, adp->va_info.vi_buffer, offset);
1305 #endif
1306
1307 if ((adp == vesa_adp) && (adp->va_info.vi_flags & V_INFO_LINEAR)) {
1308 /* va_window_size == va_buffer_size/vi_planes */
1309 /* XXX: is this correct? */
1310 if (offset > adp->va_window_size - PAGE_SIZE)
1311 return -1;
1312 #ifdef __i386__
1313 return i386_btop(adp->va_info.vi_buffer + offset);
1314 #endif
1315 } else {
1316 return (*prevvidsw->mmap)(adp, offset, prot);
1317 }
1318 }
1319
1320 static int
1321 vesa_clear(video_adapter_t *adp)
1322 {
1323 return (*prevvidsw->clear)(adp);
1324 }
1325
1326 static int
1327 vesa_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1328 {
1329 return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
1330 }
1331
1332 static int
1333 vesa_bitblt(video_adapter_t *adp,...)
1334 {
1335 /* FIXME */
1336 return 1;
1337 }
1338
1339 static int
1340 get_palette(video_adapter_t *adp, int base, int count,
1341 u_char *red, u_char *green, u_char *blue, u_char *trans)
1342 {
1343 u_char *r;
1344 u_char *g;
1345 u_char *b;
1346 int bits;
1347 int error;
1348
1349 if ((base < 0) || (base >= 256) || (count < 0) || (count > 256))
1350 return 1;
1351 if ((base + count) > 256)
1352 return 1;
1353 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode))
1354 return 1;
1355
1356 bits = vesa_bios_get_dac();
1357 if (bits <= 6)
1358 return 1;
1359
1360 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1361 g = r + count;
1362 b = g + count;
1363 error = vesa_bios_save_palette2(base, count, r, g, b, bits);
1364 if (error == 0) {
1365 copyout(r, red, count);
1366 copyout(g, green, count);
1367 copyout(b, blue, count);
1368 if (trans != NULL) {
1369 bzero(r, count);
1370 copyout(r, trans, count);
1371 }
1372 }
1373 kfree(r, M_DEVBUF);
1374
1375 /* if error && bits != 6 at this point, we are in in trouble... XXX */
1376 return error;
1377 }
1378
1379 static int
1380 set_palette(video_adapter_t *adp, int base, int count,
1381 u_char *red, u_char *green, u_char *blue, u_char *trans)
1382 {
1383 return 1;
1384 #if notyet
1385 u_char *r;
1386 u_char *g;
1387 u_char *b;
1388 int bits;
1389 int error;
1390
1391 if ((base < 0) || (base >= 256) || (base + count > 256))
1392 return 1;
1393 if (!(vesa_adp_info->v_flags & V_DAC8) || !VESA_MODE(adp->va_mode)
1394 || ((bits = vesa_bios_set_dac(8)) <= 6))
1395 return 1;
1396
1397 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1398 g = r + count;
1399 b = g + count;
1400 copyin(red, r, count);
1401 copyin(green, g, count);
1402 copyin(blue, b, count);
1403
1404 error = vesa_bios_load_palette2(base, count, r, g, b, bits);
1405 kfree(r, M_DEVBUF);
1406 if (error == 0)
1407 return 0;
1408
1409 /* if the following call fails, we are in trouble... XXX */
1410 vesa_bios_set_dac(6);
1411 return 1;
1412 #endif /* notyet */
1413 }
1414
1415 static int
1416 vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1417 {
1418 int bytes;
1419
1420 if (adp != vesa_adp)
1421 return (*prevvidsw->ioctl)(adp, cmd, arg);
1422
1423 switch (cmd) {
1424 case FBIO_SETWINORG: /* set frame buffer window origin */
1425 if (!VESA_MODE(adp->va_mode))
1426 return (*prevvidsw->ioctl)(adp, cmd, arg);
1427 return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
1428
1429 case FBIO_SETDISPSTART: /* set display start address */
1430 if (!VESA_MODE(adp->va_mode))
1431 return (*prevvidsw->ioctl)(adp, cmd, arg);
1432 if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
1433 ((video_display_start_t *)arg)->y))
1434 return ENODEV;
1435 adp->va_disp_start.x = ((video_display_start_t *)arg)->x;
1436 adp->va_disp_start.y = ((video_display_start_t *)arg)->y;
1437 return 0;
1438
1439 case FBIO_SETLINEWIDTH: /* set line length in pixel */
1440 if (!VESA_MODE(adp->va_mode))
1441 return (*prevvidsw->ioctl)(adp, cmd, arg);
1442 if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
1443 return ENODEV;
1444 adp->va_line_width = bytes;
1445 #if VESA_DEBUG > 1
1446 kprintf("new line width:%d\n", adp->va_line_width);
1447 #endif
1448 return 0;
1449
1450 case FBIO_GETPALETTE: /* get color palette */
1451 if (get_palette(adp, ((video_color_palette_t *)arg)->index,
1452 ((video_color_palette_t *)arg)->count,
1453 ((video_color_palette_t *)arg)->red,
1454 ((video_color_palette_t *)arg)->green,
1455 ((video_color_palette_t *)arg)->blue,
1456 ((video_color_palette_t *)arg)->transparent))
1457 return (*prevvidsw->ioctl)(adp, cmd, arg);
1458 return 0;
1459
1460
1461 case FBIO_SETPALETTE: /* set color palette */
1462 if (set_palette(adp, ((video_color_palette_t *)arg)->index,
1463 ((video_color_palette_t *)arg)->count,
1464 ((video_color_palette_t *)arg)->red,
1465 ((video_color_palette_t *)arg)->green,
1466 ((video_color_palette_t *)arg)->blue,
1467 ((video_color_palette_t *)arg)->transparent))
1468 return (*prevvidsw->ioctl)(adp, cmd, arg);
1469 return 0;
1470
1471 case FBIOGETCMAP: /* get color palette */
1472 if (get_palette(adp, ((struct fbcmap *)arg)->index,
1473 ((struct fbcmap *)arg)->count,
1474 ((struct fbcmap *)arg)->red,
1475 ((struct fbcmap *)arg)->green,
1476 ((struct fbcmap *)arg)->blue, NULL))
1477 return (*prevvidsw->ioctl)(adp, cmd, arg);
1478 return 0;
1479
1480 case FBIOPUTCMAP: /* set color palette */
1481 if (set_palette(adp, ((struct fbcmap *)arg)->index,
1482 ((struct fbcmap *)arg)->count,
1483 ((struct fbcmap *)arg)->red,
1484 ((struct fbcmap *)arg)->green,
1485 ((struct fbcmap *)arg)->blue, NULL))
1486 return (*prevvidsw->ioctl)(adp, cmd, arg);
1487 return 0;
1488
1489 default:
1490 return (*prevvidsw->ioctl)(adp, cmd, arg);
1491 }
1492 }
1493
1494 static int
1495 vesa_diag(video_adapter_t *adp, int level)
1496 {
1497 int error;
1498
1499 /* call the previous handler first */
1500 error = (*prevvidsw->diag)(adp, level);
1501 if (error)
1502 return error;
1503
1504 if (adp != vesa_adp)
1505 return 1;
1506
1507 if (level <= 0)
1508 return 0;
1509
1510 return 0;
1511 }
1512
1513 static int
1514 vesa_bios_info(int level)
1515 {
1516 #if VESA_DEBUG > 1
1517 struct vesa_mode vmode;
1518 int i;
1519 #endif
1520
1521 if (bootverbose) {
1522 /* general adapter information */
1523 kprintf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
1524 bcd2bin((vesa_adp_info->v_version & 0xff00) >> 8),
1525 bcd2bin(vesa_adp_info->v_version & 0x00ff),
1526 vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
1527 vesa_vmodetab, vesa_adp_info->v_modetable);
1528
1529 /* OEM string */
1530 if (vesa_oemstr != NULL)
1531 kprintf("VESA: %s\n", vesa_oemstr);
1532 }
1533
1534 if (level <= 0)
1535 return 0;
1536
1537 if (vesa_adp_info->v_version >= 0x0200 && bootverbose) {
1538 /* vendor name, product name, product revision */
1539 kprintf("VESA: %s %s %s\n",
1540 (vesa_vendorstr != NULL) ? vesa_vendorstr : "unknown",
1541 (vesa_prodstr != NULL) ? vesa_prodstr : "unknown",
1542 (vesa_revstr != NULL) ? vesa_revstr : "?");
1543 }
1544
1545 #if VESA_DEBUG > 1
1546 /* mode information */
1547 for (i = 0;
1548 (i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
1549 && (vesa_vmodetab[i] != 0xffff); ++i) {
1550 if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
1551 continue;
1552
1553 /* print something for diagnostic purpose */
1554 kprintf("VESA: mode:0x%03x, flags:0x%04x",
1555 vesa_vmodetab[i], vmode.v_modeattr);
1556 if (vmode.v_modeattr & V_MODEOPTINFO) {
1557 if (vmode.v_modeattr & V_MODEGRAPHICS) {
1558 kprintf(", G %dx%dx%d %d, ",
1559 vmode.v_width, vmode.v_height,
1560 vmode.v_bpp, vmode.v_planes);
1561 } else {
1562 kprintf(", T %dx%d, ",
1563 vmode.v_width, vmode.v_height);
1564 }
1565 kprintf("font:%dx%d, ",
1566 vmode.v_cwidth, vmode.v_cheight);
1567 kprintf("pages:%d, mem:%d",
1568 vmode.v_ipages + 1, vmode.v_memmodel);
1569 }
1570 if (vmode.v_modeattr & V_MODELFB) {
1571 kprintf("\nVESA: LFB:0x%x, off:0x%x, off_size:0x%x",
1572 vmode.v_lfb, vmode.v_offscreen,
1573 vmode.v_offscreensize*1024);
1574 }
1575 kprintf("\n");
1576 kprintf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
1577 vmode.v_waseg, vmode.v_waattr,
1578 vmode.v_wbseg, vmode.v_wbattr);
1579 kprintf("size:%dk, gran:%dk\n",
1580 vmode.v_wsize, vmode.v_wgran);
1581 }
1582 #endif /* VESA_DEBUG > 1 */
1583
1584 return 0;
1585 }
1586
1587 /* module loading */
1588
1589 static int
1590 vesa_load(void)
1591 {
1592 int error;
1593
1594 if (vesa_init_done)
1595 return 0;
1596
1597 /* locate a VGA adapter */
1598 crit_enter();
1599 vesa_adp = NULL;
1600 error = vesa_configure(0);
1601 crit_exit();
1602
1603 if (error == 0)
1604 vesa_bios_info(bootverbose);
1605
1606 return error;
1607 }
1608
1609 static int
1610 vesa_unload(void)
1611 {
1612 u_char palette[256*3];
1613 int bits;
1614
1615 /* if the adapter is currently in a VESA mode, don't unload */
1616 if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
1617 return EBUSY;
1618 /*
1619 * FIXME: if there is at least one vty which is in a VESA mode,
1620 * we shouldn't be unloading! XXX
1621 */
1622
1623 crit_enter();
1624 if (vesa_adp != NULL) {
1625 if (vesa_adp_info->v_flags & V_DAC8) {
1626 bits = vesa_bios_get_dac();
1627 if (bits > 6) {
1628 vesa_bios_save_palette(0, 256, palette, bits);
1629 vesa_bios_set_dac(6);
1630 vesa_bios_load_palette(0, 256, palette, 6);
1631 }
1632 }
1633 vesa_adp->va_flags &= ~V_ADP_VESA;
1634 vidsw[vesa_adp->va_index] = prevvidsw;
1635 }
1636 crit_exit();
1637
1638 if (vesa_vm86_buf != NULL)
1639 kfree(vesa_vm86_buf, M_DEVBUF);
1640
1641 return 0;
1642 }
1643
1644 static int
1645 vesa_mod_event(module_t mod, int type, void *data)
1646 {
1647 switch (type) {
1648 case MOD_LOAD:
1649 return vesa_load();
1650 case MOD_UNLOAD:
1651 return vesa_unload();
1652 default:
1653 break;
1654 }
1655 return 0;
1656 }
1657
1658 static moduledata_t vesa_mod = {
1659 "vesa",
1660 vesa_mod_event,
1661 NULL,
1662 };
1663
1664 DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1665
1666 #endif /* VGA_NO_MODE_CHANGE */
DragonFly BSD