This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_fbvideo.c
2
3
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
5
6
7
8
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
10
11
12
13
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19
20
Sam Lantinga
slouken@libsdl.org
21
*/
22
#include "SDL_config.h"
23
24
25
26
27
28
29
30
31
/* Framebuffer console based SDL video driver implementation.
*/
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
32
#include <asm/page.h> /* For definition of PAGE_SIZE */
33
#include <linux/vt.h>
34
35
36
#include "SDL_video.h"
#include "SDL_mouse.h"
37
38
39
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
40
41
42
43
44
#include "SDL_fbvideo.h"
#include "SDL_fbmouse_c.h"
#include "SDL_fbevents_c.h"
#include "SDL_fb3dfx.h"
#include "SDL_fbmatrox.h"
45
46
#include "SDL_fbriva.h"
47
/*#define FBCON_DEBUG*/
48
49
50
#if defined(i386) && defined(FB_TYPE_VGA_PLANES)
#define VGA16_FBCON_SUPPORT
51
#include <sys/io.h> /* For ioperm() */
52
53
54
#ifndef FB_AUX_VGA_PLANES_VGA4
#define FB_AUX_VGA_PLANES_VGA4 0
#endif
56
57
58
59
static inline void outb (unsigned char value, unsigned short port)
{
__asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port));
}
61
62
63
#endif /* FB_TYPE_VGA_PLANES */
/* A list of video resolutions that we query for (sorted largest to smallest) */
64
static const SDL_Rect checkres[] = {
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
{0, 0, 1600, 1200}, /* 16 bpp: 0x11E, or 286 */
{0, 0, 1408, 1056}, /* 16 bpp: 0x19A, or 410 */
{0, 0, 1280, 1024}, /* 16 bpp: 0x11A, or 282 */
{0, 0, 1152, 864}, /* 16 bpp: 0x192, or 402 */
{0, 0, 1024, 768}, /* 16 bpp: 0x117, or 279 */
{0, 0, 960, 720}, /* 16 bpp: 0x18A, or 394 */
{0, 0, 800, 600}, /* 16 bpp: 0x114, or 276 */
{0, 0, 768, 576}, /* 16 bpp: 0x182, or 386 */
{0, 0, 720, 576}, /* PAL */
{0, 0, 720, 480}, /* NTSC */
{0, 0, 640, 480}, /* 16 bpp: 0x111, or 273 */
{0, 0, 640, 400}, /* 8 bpp: 0x100, or 256 */
{0, 0, 512, 384},
{0, 0, 320, 240},
{0, 0, 320, 200}
80
};
81
82
83
84
85
86
87
88
89
90
91
92
93
static const struct
{
int xres;
int yres;
int pixclock;
int left;
int right;
int upper;
int lower;
int hslen;
int vslen;
int sync;
int vmode;
94
} vesa_timings[] = {
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
#ifdef USE_VESA_TIMINGS /* Only tested on Matrox Millenium I */
{
640, 400, 39771, 48, 16, 39, 8, 96, 2, 2, 0}, /* 70 Hz */
{
640, 480, 39683, 48, 16, 33, 10, 96, 2, 0, 0}, /* 60 Hz */
{
768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0}, /* 60 Hz */
{
800, 600, 24038, 144, 24, 28, 8, 112, 6, 0, 0}, /* 60 Hz */
{
960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0}, /* 60 Hz */
{
1024, 768, 15386, 160, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0}, /* 60 Hz */
{
1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0}, /* 60 Hz */
{
1600, 1200, /*? */ 0, 272, 48, 32, 5, 152, 5, 0, 0}, /* 60 Hz */
116
#else
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* You can generate these timings from your XF86Config file using
the 'modeline2fb' perl script included with the fbset package.
These timings were generated for Matrox Millenium I, 15" monitor.
*/
{
320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 2}, /* 70 Hz */
{
320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 2}, /* 72 Hz */
{
512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 0}, /* 78 Hz */
{
640, 400, 31746, 96, 32, 41, 1, 64, 3, 2, 0}, /* 85 Hz */
{
640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 0}, /* 75 Hz */
{
768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0}, /* 60 Hz */
{
800, 600, 20000, 64, 56, 23, 37, 120, 6, 3, 0}, /* 72 Hz */
{
960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0}, /* 60 Hz */
{
1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 0}, /* 70 Hz */
{
1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0}, /* 60 Hz */
{
1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0}, /* 60 Hz */
{
1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0}, /* 60 Hz */
{
1600, 1200, /*? */ 0, 272, 48, 32, 5, 152, 5, 0, 0}, /* 60 Hz */
147
148
149
150
#endif
};
/* Initialization/Query functions */
151
152
153
154
static int FB_VideoInit(_THIS, SDL_PixelFormat * vformat);
static SDL_Rect **FB_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags);
static SDL_Surface *FB_SetVideoMode(_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
155
#ifdef VGA16_FBCON_SUPPORT
156
157
static SDL_Surface *FB_SetVGA16Mode(_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
158
#endif
159
160
static int FB_SetColors(_THIS, int firstcolor, int ncolors,
SDL_Color * colors);
161
162
163
static void FB_VideoQuit(_THIS);
/* Hardware surface functions */
164
165
static int FB_InitHWSurfaces(_THIS, SDL_Surface * screen, char *base,
int size);
166
static void FB_FreeHWSurfaces(_THIS);
167
168
169
170
static int FB_AllocHWSurface(_THIS, SDL_Surface * surface);
static int FB_LockHWSurface(_THIS, SDL_Surface * surface);
static void FB_UnlockHWSurface(_THIS, SDL_Surface * surface);
static void FB_FreeHWSurface(_THIS, SDL_Surface * surface);
171
static void FB_WaitVBL(_THIS);
172
static void FB_WaitIdle(_THIS);
173
static int FB_FlipHWSurface(_THIS, SDL_Surface * surface);
174
175
176
/* Internal palette functions */
static void FB_SavePalette(_THIS, struct fb_fix_screeninfo *finfo,
177
struct fb_var_screeninfo *vinfo);
178
179
static void FB_RestorePalette(_THIS);
180
181
182
/* Small wrapper for mmap() so we can play nicely with no-mmu hosts
* (non-mmu hosts disallow the MAP_SHARED flag) */
183
184
static void *
do_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
186
187
188
189
190
191
192
void *ret;
ret = mmap(start, length, prot, flags, fd, offset);
if (ret == (char *) -1 && (flags & MAP_SHARED)) {
ret = mmap(start, length, prot,
(flags & ~MAP_SHARED) | MAP_PRIVATE, fd, offset);
}
return ret;
195
196
/* FB driver bootstrap functions */
197
198
static int
FB_Available(void)
199
{
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
int console = -1;
/* Added check for /fb/0 (devfs) */
/* but - use environment variable first... if it fails, still check defaults */
int idx = 0;
const char *SDL_fbdevs[4] = { NULL, "/dev/fb0", "/dev/fb/0", NULL };
SDL_fbdevs[0] = SDL_getenv("SDL_FBDEV");
if (!SDL_fbdevs[0])
idx++;
for (; SDL_fbdevs[idx]; idx++) {
console = open(SDL_fbdevs[idx], O_RDWR, 0);
if (console >= 0) {
close(console);
break;
}
}
return (console >= 0);
217
218
}
219
220
static void
FB_DeleteDevice(SDL_VideoDevice * device)
221
{
222
223
SDL_free(device->hidden);
SDL_free(device);
224
225
}
226
227
static SDL_VideoDevice *
FB_CreateDevice(int devindex)
228
{
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
SDL_VideoDevice *this;
/* Initialize all variables that we clean on shutdown */
this = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice));
if (this) {
SDL_memset(this, 0, (sizeof *this));
this->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc((sizeof *this->hidden));
}
if ((this == NULL) || (this->hidden == NULL)) {
SDL_OutOfMemory();
if (this) {
SDL_free(this);
}
return (0);
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
wait_vbl = FB_WaitVBL;
wait_idle = FB_WaitIdle;
mouse_fd = -1;
keyboard_fd = -1;
/* Set the function pointers */
this->VideoInit = FB_VideoInit;
this->ListModes = FB_ListModes;
this->SetVideoMode = FB_SetVideoMode;
this->SetColors = FB_SetColors;
this->UpdateRects = NULL;
this->VideoQuit = FB_VideoQuit;
this->AllocHWSurface = FB_AllocHWSurface;
this->CheckHWBlit = NULL;
this->FillHWRect = NULL;
this->SetHWColorKey = NULL;
this->SetHWAlpha = NULL;
this->LockHWSurface = FB_LockHWSurface;
this->UnlockHWSurface = FB_UnlockHWSurface;
this->FlipHWSurface = FB_FlipHWSurface;
this->FreeHWSurface = FB_FreeHWSurface;
this->SetCaption = NULL;
this->SetIcon = NULL;
this->IconifyWindow = NULL;
this->GrabInput = NULL;
this->GetWMInfo = NULL;
this->InitOSKeymap = FB_InitOSKeymap;
this->PumpEvents = FB_PumpEvents;
this->free = FB_DeleteDevice;
return this;
278
279
280
}
VideoBootStrap FBCON_bootstrap = {
281
282
"fbcon", "Linux Framebuffer Console",
FB_Available, FB_CreateDevice
283
284
};
285
286
#define FB_MODES_DB "/etc/fb.modes"
287
288
static int
read_fbmodes_line(FILE * f, char *line, int length)
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
int blank;
char *c;
int i;
blank = 0;
/* find a relevant line */
do {
if (fgets(line, length, f) <= 0)
return 0;
c = line;
while (((*c == '\t') || (*c == ' ')) && (*c != 0))
c++;
if ((*c == '\n') || (*c == '#') || (*c == 0))
blank = 1;
else
blank = 0;
}
while (blank);
/* remove whitespace at the begining of the string */
i = 0;
do {
line[i] = c[i];
i++;
}
while (c[i] != 0);
return 1;
319
320
static int
read_fbmodes_mode(FILE * f, struct fb_var_screeninfo *vinfo)
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
char line[1024];
char option[256];
/* Find a "geometry" */
do {
if (read_fbmodes_line(f, line, sizeof(line)) == 0)
return 0;
if (SDL_strncmp(line, "geometry", 8) == 0)
break;
}
while (1);
SDL_sscanf(line, "geometry %d %d %d %d %d", &vinfo->xres, &vinfo->yres,
&vinfo->xres_virtual, &vinfo->yres_virtual,
&vinfo->bits_per_pixel);
if (read_fbmodes_line(f, line, sizeof(line)) == 0)
return 0;
SDL_sscanf(line, "timings %d %d %d %d %d %d %d", &vinfo->pixclock,
&vinfo->left_margin, &vinfo->right_margin,
&vinfo->upper_margin, &vinfo->lower_margin, &vinfo->hsync_len,
&vinfo->vsync_len);
vinfo->sync = 0;
vinfo->vmode = FB_VMODE_NONINTERLACED;
/* Parse misc options */
do {
if (read_fbmodes_line(f, line, sizeof(line)) == 0)
return 0;
if (SDL_strncmp(line, "hsync", 5) == 0) {
SDL_sscanf(line, "hsync %s", option);
if (SDL_strncmp(option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_HOR_HIGH_ACT;
} else if (SDL_strncmp(line, "vsync", 5) == 0) {
SDL_sscanf(line, "vsync %s", option);
if (SDL_strncmp(option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_VERT_HIGH_ACT;
} else if (SDL_strncmp(line, "csync", 5) == 0) {
SDL_sscanf(line, "csync %s", option);
if (SDL_strncmp(option, "high", 4) == 0)
vinfo->sync |= FB_SYNC_COMP_HIGH_ACT;
} else if (SDL_strncmp(line, "extsync", 5) == 0) {
SDL_sscanf(line, "extsync %s", option);
if (SDL_strncmp(option, "true", 4) == 0)
vinfo->sync |= FB_SYNC_EXT;
} else if (SDL_strncmp(line, "laced", 5) == 0) {
SDL_sscanf(line, "laced %s", option);
if (SDL_strncmp(option, "true", 4) == 0)
vinfo->vmode |= FB_VMODE_INTERLACED;
} else if (SDL_strncmp(line, "double", 6) == 0) {
SDL_sscanf(line, "double %s", option);
if (SDL_strncmp(option, "true", 4) == 0)
vinfo->vmode |= FB_VMODE_DOUBLE;
}
}
while (SDL_strncmp(line, "endmode", 7) != 0);
return 1;
384
385
386
static int
FB_CheckMode(_THIS, struct fb_var_screeninfo *vinfo,
int index, unsigned int *w, unsigned int *h)
387
{
388
389
390
391
392
393
394
395
396
397
int mode_okay;
mode_okay = 0;
vinfo->bits_per_pixel = (index + 1) * 8;
vinfo->xres = *w;
vinfo->xres_virtual = *w;
vinfo->yres = *h;
vinfo->yres_virtual = *h;
vinfo->activate = FB_ACTIVATE_TEST;
if (ioctl(console_fd, FBIOPUT_VSCREENINFO, vinfo) == 0) {
398
#ifdef FBCON_DEBUG
399
400
401
402
fprintf(stderr,
"Checked mode %dx%d at %d bpp, got mode %dx%d at %d bpp\n",
*w, *h, (index + 1) * 8, vinfo->xres, vinfo->yres,
vinfo->bits_per_pixel);
403
#endif
404
405
406
407
408
409
410
if ((((vinfo->bits_per_pixel + 7) / 8) - 1) == index) {
*w = vinfo->xres;
*h = vinfo->yres;
mode_okay = 1;
}
}
return mode_okay;
411
412
}
413
414
415
static int
FB_AddMode(_THIS, int index, unsigned int w, unsigned int h,
int check_timings)
416
{
417
418
419
420
421
422
423
424
SDL_Rect *mode;
int i;
int next_mode;
/* Check to see if we already have this mode */
if (SDL_nummodes[index] > 0) {
mode = SDL_modelist[index][SDL_nummodes[index] - 1];
if ((mode->w == w) && (mode->h == h)) {
425
#ifdef FBCON_DEBUG
426
427
428
fprintf(stderr,
"We already have mode %dx%d at %d bytes per pixel\n",
w, h, index + 1);
429
#endif
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
return (0);
}
}
/* Only allow a mode if we have a valid timing for it */
if (check_timings) {
int found_timing = 0;
for (i = 0; i < (sizeof(vesa_timings) / sizeof(vesa_timings[0])); ++i) {
if ((w == vesa_timings[i].xres) &&
(h == vesa_timings[i].yres) && vesa_timings[i].pixclock) {
found_timing = 1;
break;
}
}
if (!found_timing) {
445
#ifdef FBCON_DEBUG
446
fprintf(stderr, "No valid timing line for mode %dx%d\n", w, h);
447
#endif
448
449
450
451
452
453
454
455
456
457
458
459
460
461
return (0);
}
}
/* Set up the new video mode rectangle */
mode = (SDL_Rect *) SDL_malloc(sizeof *mode);
if (mode == NULL) {
SDL_OutOfMemory();
return (-1);
}
mode->x = 0;
mode->y = 0;
mode->w = w;
mode->h = h;
462
#ifdef FBCON_DEBUG
463
464
fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h,
index + 1);
465
466
#endif
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
/* Allocate the new list of modes, and fill in the new mode */
next_mode = SDL_nummodes[index];
SDL_modelist[index] = (SDL_Rect **)
SDL_realloc(SDL_modelist[index],
(1 + next_mode + 1) * sizeof(SDL_Rect *));
if (SDL_modelist[index] == NULL) {
SDL_OutOfMemory();
SDL_nummodes[index] = 0;
SDL_free(mode);
return (-1);
}
SDL_modelist[index][next_mode] = mode;
SDL_modelist[index][next_mode + 1] = NULL;
SDL_nummodes[index]++;
return (0);
483
484
}
485
486
static int
cmpmodes(const void *va, const void *vb)
488
489
490
const SDL_Rect *a = *(const SDL_Rect **) va;
const SDL_Rect *b = *(const SDL_Rect **) vb;
if (a->h == b->h)
491
492
493
494
495
return b->w - a->w;
else
return b->h - a->h;
}
496
497
static void
FB_SortModes(_THIS)
499
500
501
502
503
504
505
int i;
for (i = 0; i < NUM_MODELISTS; ++i) {
if (SDL_nummodes[i] > 0) {
SDL_qsort(SDL_modelist[i], SDL_nummodes[i],
sizeof *SDL_modelist[i], cmpmodes);
}
}
508
509
static int
FB_VideoInit(_THIS, SDL_PixelFormat * vformat)
510
{
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
int i, j;
int current_index;
unsigned int current_w;
unsigned int current_h;
const char *SDL_fbdev;
FILE *modesdb;
/* Initialize the library */
SDL_fbdev = SDL_getenv("SDL_FBDEV");
if (SDL_fbdev == NULL) {
SDL_fbdev = "/dev/fb0";
}
console_fd = open(SDL_fbdev, O_RDWR, 0);
if (console_fd < 0) {
SDL_SetError("Unable to open %s", SDL_fbdev);
return (-1);
}
530
#if !SDL_THREADS_DISABLED
531
532
533
534
535
536
537
/* Create the hardware surface lock mutex */
hw_lock = SDL_CreateMutex();
if (hw_lock == NULL) {
SDL_SetError("Unable to create lock mutex");
FB_VideoQuit(this);
return (-1);
}
538
539
#endif
540
541
542
543
544
545
546
547
548
549
/* Get the type of video hardware */
if (ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0) {
SDL_SetError("Couldn't get console hardware info");
FB_VideoQuit(this);
return (-1);
}
switch (finfo.type) {
case FB_TYPE_PACKED_PIXELS:
/* Supported, no worries.. */
break;
550
#ifdef VGA16_FBCON_SUPPORT
551
552
553
554
555
556
557
558
559
560
561
562
case FB_TYPE_VGA_PLANES:
/* VGA16 is supported, but that's it */
if (finfo.type_aux == FB_AUX_VGA_PLANES_VGA4) {
if (ioperm(0x3b4, 0x3df - 0x3b4 + 1, 1) < 0) {
SDL_SetError("No I/O port permissions");
FB_VideoQuit(this);
return (-1);
}
this->SetVideoMode = FB_SetVGA16Mode;
break;
}
/* Fall through to unsupported case */
563
#endif /* VGA16_FBCON_SUPPORT */
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
default:
SDL_SetError("Unsupported console hardware");
FB_VideoQuit(this);
return (-1);
}
switch (finfo.visual) {
case FB_VISUAL_TRUECOLOR:
case FB_VISUAL_PSEUDOCOLOR:
case FB_VISUAL_STATIC_PSEUDOCOLOR:
case FB_VISUAL_DIRECTCOLOR:
break;
default:
SDL_SetError("Unsupported console hardware");
FB_VideoQuit(this);
return (-1);
}
/* Check if the user wants to disable hardware acceleration */
{
const char *fb_accel;
fb_accel = SDL_getenv("SDL_FBACCEL");
if (fb_accel) {
finfo.accel = SDL_atoi(fb_accel);
}
}
/* Memory map the device, compensating for buggy PPC mmap() */
mapped_offset = (((long) finfo.smem_start) -
(((long) finfo.smem_start) & ~(PAGE_SIZE - 1)));
mapped_memlen = finfo.smem_len + mapped_offset;
mapped_mem = do_mmap(NULL, mapped_memlen,
PROT_READ | PROT_WRITE, MAP_SHARED, console_fd, 0);
if (mapped_mem == (char *) -1) {
SDL_SetError("Unable to memory map the video hardware");
mapped_mem = NULL;
FB_VideoQuit(this);
return (-1);
}
/* Determine the current screen depth */
if (ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError("Couldn't get console pixel format");
FB_VideoQuit(this);
return (-1);
}
vformat->BitsPerPixel = vinfo.bits_per_pixel;
if (vformat->BitsPerPixel < 8) {
/* Assuming VGA16, we handle this via a shadow framebuffer */
vformat->BitsPerPixel = 8;
}
for (i = 0; i < vinfo.red.length; ++i) {
vformat->Rmask <<= 1;
vformat->Rmask |= (0x00000001 << vinfo.red.offset);
}
for (i = 0; i < vinfo.green.length; ++i) {
vformat->Gmask <<= 1;
vformat->Gmask |= (0x00000001 << vinfo.green.offset);
}
for (i = 0; i < vinfo.blue.length; ++i) {
vformat->Bmask <<= 1;
vformat->Bmask |= (0x00000001 << vinfo.blue.offset);
}
saved_vinfo = vinfo;
/* Save hardware palette, if needed */
FB_SavePalette(this, &finfo, &vinfo);
/* If the I/O registers are available, memory map them so we
can take advantage of any supported hardware acceleration.
*/
vinfo.accel_flags = 0; /* Temporarily reserve registers */
ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo);
if (finfo.accel && finfo.mmio_len) {
mapped_iolen = finfo.mmio_len;
mapped_io = do_mmap(NULL, mapped_iolen, PROT_READ | PROT_WRITE,
MAP_SHARED, console_fd, mapped_memlen);
if (mapped_io == (char *) -1) {
/* Hmm, failed to memory map I/O registers */
mapped_io = NULL;
}
}
/* Query for the list of available video modes */
current_w = vinfo.xres;
current_h = vinfo.yres;
current_index = ((vinfo.bits_per_pixel + 7) / 8) - 1;
modesdb = fopen(FB_MODES_DB, "r");
for (i = 0; i < NUM_MODELISTS; ++i) {
SDL_nummodes[i] = 0;
SDL_modelist[i] = NULL;
}
if (SDL_getenv("SDL_FB_BROKEN_MODES") != NULL) {
FB_AddMode(this, current_index, current_w, current_h, 0);
} else if (modesdb) {
while (read_fbmodes_mode(modesdb, &vinfo)) {
for (i = 0; i < NUM_MODELISTS; ++i) {
unsigned int w, h;
/* See if we are querying for the current mode */
w = vinfo.xres;
h = vinfo.yres;
if (i == current_index) {
if ((current_w > w) || (current_h > h)) {
/* Only check once */
FB_AddMode(this, i, current_w, current_h, 0);
current_index = -1;
}
}
if (FB_CheckMode(this, &vinfo, i, &w, &h)) {
FB_AddMode(this, i, w, h, 0);
}
}
}
fclose(modesdb);
FB_SortModes(this);
} else {
for (i = 0; i < NUM_MODELISTS; ++i) {
for (j = 0; j < (sizeof(checkres) / sizeof(checkres[0])); ++j) {
unsigned int w, h;
/* See if we are querying for the current mode */
w = checkres[j].w;
h = checkres[j].h;
if (i == current_index) {
if ((current_w > w) || (current_h > h)) {
/* Only check once */
FB_AddMode(this, i, current_w, current_h, 0);
current_index = -1;
}
}
if (FB_CheckMode(this, &vinfo, i, &w, &h)) {
FB_AddMode(this, i, w, h, 1);
}
}
}
}
/* Fill in our hardware acceleration capabilities */
this->info.current_w = current_w;
this->info.current_h = current_h;
this->info.wm_available = 0;
this->info.hw_available = 1;
this->info.video_mem = finfo.smem_len / 1024;
if (mapped_io) {
switch (finfo.accel) {
case FB_ACCEL_MATROX_MGA2064W:
case FB_ACCEL_MATROX_MGA1064SG:
case FB_ACCEL_MATROX_MGA2164W:
case FB_ACCEL_MATROX_MGA2164W_AGP:
case FB_ACCEL_MATROX_MGAG100:
/*case FB_ACCEL_MATROX_MGAG200: G200 acceleration broken! */
case FB_ACCEL_MATROX_MGAG400:
716
#ifdef FBACCEL_DEBUG
717
printf("Matrox hardware accelerator!\n");
718
#endif
719
720
721
FB_MatroxAccel(this, finfo.accel);
break;
case FB_ACCEL_3DFX_BANSHEE:
722
#ifdef FBACCEL_DEBUG
723
printf("3DFX hardware accelerator!\n");
724
#endif
725
726
727
728
FB_3DfxAccel(this, finfo.accel);
break;
case FB_ACCEL_NV3:
case FB_ACCEL_NV4:
729
#ifdef FBACCEL_DEBUG
730
printf("NVidia hardware accelerator!\n");
732
733
734
FB_RivaAccel(this, finfo.accel);
break;
default:
735
#ifdef FBACCEL_DEBUG
736
printf("Unknown hardware accelerator.\n");
737
#endif
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
break;
}
}
/* Enable mouse and keyboard support */
if (FB_OpenKeyboard(this) < 0) {
FB_VideoQuit(this);
return (-1);
}
if (FB_OpenMouse(this) < 0) {
const char *sdl_nomouse;
sdl_nomouse = SDL_getenv("SDL_NOMOUSE");
if (!sdl_nomouse) {
SDL_SetError("Unable to open mouse");
FB_VideoQuit(this);
return (-1);
}
}
/* We're done! */
return (0);
760
761
}
762
763
static SDL_Rect **
FB_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
764
{
765
return (SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
766
767
768
}
/* Various screen update functions available */
769
static void FB_DirectUpdate(_THIS, int numrects, SDL_Rect * rects);
770
#ifdef VGA16_FBCON_SUPPORT
771
static void FB_VGA16Update(_THIS, int numrects, SDL_Rect * rects);
772
773
774
#endif
#ifdef FBCON_DEBUG
775
776
static void
print_vinfo(struct fb_var_screeninfo *vinfo)
777
{
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
fprintf(stderr, "Printing vinfo:\n");
fprintf(stderr, "\txres: %d\n", vinfo->xres);
fprintf(stderr, "\tyres: %d\n", vinfo->yres);
fprintf(stderr, "\txres_virtual: %d\n", vinfo->xres_virtual);
fprintf(stderr, "\tyres_virtual: %d\n", vinfo->yres_virtual);
fprintf(stderr, "\txoffset: %d\n", vinfo->xoffset);
fprintf(stderr, "\tyoffset: %d\n", vinfo->yoffset);
fprintf(stderr, "\tbits_per_pixel: %d\n", vinfo->bits_per_pixel);
fprintf(stderr, "\tgrayscale: %d\n", vinfo->grayscale);
fprintf(stderr, "\tnonstd: %d\n", vinfo->nonstd);
fprintf(stderr, "\tactivate: %d\n", vinfo->activate);
fprintf(stderr, "\theight: %d\n", vinfo->height);
fprintf(stderr, "\twidth: %d\n", vinfo->width);
fprintf(stderr, "\taccel_flags: %d\n", vinfo->accel_flags);
fprintf(stderr, "\tpixclock: %d\n", vinfo->pixclock);
fprintf(stderr, "\tleft_margin: %d\n", vinfo->left_margin);
fprintf(stderr, "\tright_margin: %d\n", vinfo->right_margin);
fprintf(stderr, "\tupper_margin: %d\n", vinfo->upper_margin);
fprintf(stderr, "\tlower_margin: %d\n", vinfo->lower_margin);
fprintf(stderr, "\thsync_len: %d\n", vinfo->hsync_len);
fprintf(stderr, "\tvsync_len: %d\n", vinfo->vsync_len);
fprintf(stderr, "\tsync: %d\n", vinfo->sync);
fprintf(stderr, "\tvmode: %d\n", vinfo->vmode);
fprintf(stderr, "\tred: %d/%d\n", vinfo->red.length, vinfo->red.offset);
fprintf(stderr, "\tgreen: %d/%d\n", vinfo->green.length,
vinfo->green.offset);
fprintf(stderr, "\tblue: %d/%d\n", vinfo->blue.length,
vinfo->blue.offset);
fprintf(stderr, "\talpha: %d/%d\n", vinfo->transp.length,
vinfo->transp.offset);
808
}
809
810
static void
print_finfo(struct fb_fix_screeninfo *finfo)
811
{
812
813
814
815
816
817
818
819
820
821
822
823
824
fprintf(stderr, "Printing finfo:\n");
fprintf(stderr, "\tsmem_start = %p\n", (char *) finfo->smem_start);
fprintf(stderr, "\tsmem_len = %d\n", finfo->smem_len);
fprintf(stderr, "\ttype = %d\n", finfo->type);
fprintf(stderr, "\ttype_aux = %d\n", finfo->type_aux);
fprintf(stderr, "\tvisual = %d\n", finfo->visual);
fprintf(stderr, "\txpanstep = %d\n", finfo->xpanstep);
fprintf(stderr, "\typanstep = %d\n", finfo->ypanstep);
fprintf(stderr, "\tywrapstep = %d\n", finfo->ywrapstep);
fprintf(stderr, "\tline_length = %d\n", finfo->line_length);
fprintf(stderr, "\tmmio_start = %p\n", (char *) finfo->mmio_start);
fprintf(stderr, "\tmmio_len = %d\n", finfo->mmio_len);
fprintf(stderr, "\taccel = %d\n", finfo->accel);
825
826
827
}
#endif
828
829
static int
choose_fbmodes_mode(struct fb_var_screeninfo *vinfo)
830
{
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
int matched;
FILE *modesdb;
struct fb_var_screeninfo cinfo;
matched = 0;
modesdb = fopen(FB_MODES_DB, "r");
if (modesdb) {
/* Parse the mode definition file */
while (read_fbmodes_mode(modesdb, &cinfo)) {
if ((vinfo->xres == cinfo.xres && vinfo->yres == cinfo.yres)
&& (!matched
|| (vinfo->bits_per_pixel == cinfo.bits_per_pixel))) {
vinfo->pixclock = cinfo.pixclock;
vinfo->left_margin = cinfo.left_margin;
vinfo->right_margin = cinfo.right_margin;
vinfo->upper_margin = cinfo.upper_margin;
vinfo->lower_margin = cinfo.lower_margin;
vinfo->hsync_len = cinfo.hsync_len;
vinfo->vsync_len = cinfo.vsync_len;
if (matched) {
break;
}
matched = 1;
}
}
fclose(modesdb);
}
return (matched);
859
860
}
861
862
static int
choose_vesa_mode(struct fb_var_screeninfo *vinfo)
863
{
864
865
866
867
868
869
870
871
int matched;
int i;
/* Check for VESA timings */
matched = 0;
for (i = 0; i < (sizeof(vesa_timings) / sizeof(vesa_timings[0])); ++i) {
if ((vinfo->xres == vesa_timings[i].xres) &&
(vinfo->yres == vesa_timings[i].yres)) {
872
#ifdef FBCON_DEBUG
873
874
fprintf(stderr, "Using VESA timings for %dx%d\n",
vinfo->xres, vinfo->yres);
875
#endif
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
if (vesa_timings[i].pixclock) {
vinfo->pixclock = vesa_timings[i].pixclock;
}
vinfo->left_margin = vesa_timings[i].left;
vinfo->right_margin = vesa_timings[i].right;
vinfo->upper_margin = vesa_timings[i].upper;
vinfo->lower_margin = vesa_timings[i].lower;
vinfo->hsync_len = vesa_timings[i].hslen;
vinfo->vsync_len = vesa_timings[i].vslen;
vinfo->sync = vesa_timings[i].sync;
vinfo->vmode = vesa_timings[i].vmode;
matched = 1;
break;
}
}
return (matched);
892
893
894
}
#ifdef VGA16_FBCON_SUPPORT
895
896
897
static SDL_Surface *
FB_SetVGA16Mode(_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
898
{
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
/* Set the terminal into graphics mode */
if (FB_EnterGraphicsMode(this) < 0) {
return (NULL);
}
/* Restore the original palette */
FB_RestorePalette(this);
/* Set the video mode and get the final screen format */
if (ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError("Couldn't get console screen info");
return (NULL);
}
cache_vinfo = vinfo;
916
#ifdef FBCON_DEBUG
917
918
fprintf(stderr, "Printing actual vinfo:\n");
print_vinfo(&vinfo);
919
#endif
920
921
922
923
924
925
926
927
928
929
930
931
if (!SDL_ReallocFormat(current, bpp, 0, 0, 0, 0)) {
return (NULL);
}
current->format->palette->ncolors = 16;
/* Get the fixed information about the console hardware.
This is necessary since finfo.line_length changes.
*/
if (ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0) {
SDL_SetError("Couldn't get console hardware info");
return (NULL);
}
932
#ifdef FBCON_DEBUG
933
934
fprintf(stderr, "Printing actual finfo:\n");
print_finfo(&finfo);
935
936
#endif
937
938
/* Save hardware palette, if needed */
FB_SavePalette(this, &finfo, &vinfo);
940
941
942
943
944
945
/* Set up the new mode framebuffer */
current->flags = SDL_FULLSCREEN;
current->w = vinfo.xres;
current->h = vinfo.yres;
current->pitch = current->w;
current->pixels = SDL_malloc(current->h * current->pitch);
947
948
/* Set the update rectangle function */
this->UpdateRects = FB_VGA16Update;
950
951
/* We're done */
return (current);
952
953
954
}
#endif /* VGA16_FBCON_SUPPORT */
955
956
957
static SDL_Surface *
FB_SetVideoMode(_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
958
{
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
int i;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
char *surfaces_mem;
int surfaces_len;
/* Set the terminal into graphics mode */
if (FB_EnterGraphicsMode(this) < 0) {
return (NULL);
}
/* Restore the original palette */
FB_RestorePalette(this);
/* Set the video mode and get the final screen format */
if (ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0) {
SDL_SetError("Couldn't get console screen info");
return (NULL);
}
981
#ifdef FBCON_DEBUG
982
983
fprintf(stderr, "Printing original vinfo:\n");
print_vinfo(&vinfo);
984
#endif
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
if ((vinfo.xres != width) || (vinfo.yres != height) ||
(vinfo.bits_per_pixel != bpp) || (flags & SDL_DOUBLEBUF)) {
vinfo.activate = FB_ACTIVATE_NOW;
vinfo.accel_flags = 0;
vinfo.bits_per_pixel = bpp;
vinfo.xres = width;
vinfo.xres_virtual = width;
vinfo.yres = height;
if (flags & SDL_DOUBLEBUF) {
vinfo.yres_virtual = height * 2;
} else {
vinfo.yres_virtual = height;
}
vinfo.xoffset = 0;
vinfo.yoffset = 0;
vinfo.red.length = vinfo.red.offset = 0;