e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 Sam Lantinga |
4 | |
5 | This library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | This library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
18 | |
19 | Sam Lantinga |
20 | slouken@libsdl.org |
21 | */ |
22 | #include "SDL_config.h" |
23 | |
24 | /* Framebuffer console based SDL video driver implementation. |
25 | */ |
26 | |
27 | #include <stdio.h> |
28 | #include <fcntl.h> |
29 | #include <unistd.h> |
30 | #include <sys/ioctl.h> |
31 | #include <sys/mman.h> |
32 | |
33 | #ifndef HAVE_GETPAGESIZE |
34 | #include <asm/page.h> /* For definition of PAGE_SIZE */ |
35 | #endif |
36 | |
37 | #include <linux/vt.h> |
38 | |
39 | #include "SDL_video.h" |
40 | #include "SDL_mouse.h" |
41 | #include "../SDL_sysvideo.h" |
42 | #include "../SDL_pixels_c.h" |
43 | #include "../../events/SDL_events_c.h" |
44 | #include "SDL_fbvideo.h" |
45 | #include "SDL_fbmouse_c.h" |
46 | #include "SDL_fbevents_c.h" |
47 | #include "SDL_fb3dfx.h" |
48 | #include "SDL_fbmatrox.h" |
49 | #include "SDL_fbriva.h" |
50 | |
51 | /*#define FBCON_DEBUG*/ |
52 | |
53 | #if defined(i386) && defined(FB_TYPE_VGA_PLANES) |
54 | #define VGA16_FBCON_SUPPORT |
55 | #include <sys/io.h> /* For ioperm() */ |
56 | #ifndef FB_AUX_VGA_PLANES_VGA4 |
57 | #define FB_AUX_VGA_PLANES_VGA4 0 |
58 | #endif |
59 | /* |
60 | static inline void outb (unsigned char value, unsigned short port) |
61 | { |
62 | __asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port)); |
63 | } |
64 | */ |
65 | #endif /* FB_TYPE_VGA_PLANES */ |
66 | |
67 | /* A list of video resolutions that we query for (sorted largest to smallest) */ |
68 | static const SDL_Rect checkres[] = { |
69 | { 0, 0, 1600, 1200 }, /* 16 bpp: 0x11E, or 286 */ |
70 | { 0, 0, 1408, 1056 }, /* 16 bpp: 0x19A, or 410 */ |
71 | { 0, 0, 1280, 1024 }, /* 16 bpp: 0x11A, or 282 */ |
72 | { 0, 0, 1152, 864 }, /* 16 bpp: 0x192, or 402 */ |
73 | { 0, 0, 1024, 768 }, /* 16 bpp: 0x117, or 279 */ |
74 | { 0, 0, 960, 720 }, /* 16 bpp: 0x18A, or 394 */ |
75 | { 0, 0, 800, 600 }, /* 16 bpp: 0x114, or 276 */ |
76 | { 0, 0, 768, 576 }, /* 16 bpp: 0x182, or 386 */ |
77 | { 0, 0, 720, 576 }, /* PAL */ |
78 | { 0, 0, 720, 480 }, /* NTSC */ |
79 | { 0, 0, 640, 480 }, /* 16 bpp: 0x111, or 273 */ |
80 | { 0, 0, 640, 400 }, /* 8 bpp: 0x100, or 256 */ |
81 | { 0, 0, 512, 384 }, |
82 | { 0, 0, 320, 240 }, |
83 | { 0, 0, 320, 200 } |
84 | }; |
85 | static const struct { |
86 | int xres; |
87 | int yres; |
88 | int pixclock; |
89 | int left; |
90 | int right; |
91 | int upper; |
92 | int lower; |
93 | int hslen; |
94 | int vslen; |
95 | int sync; |
96 | int vmode; |
97 | } vesa_timings[] = { |
98 | #ifdef USE_VESA_TIMINGS /* Only tested on Matrox Millenium I */ |
99 | { 640, 400, 39771, 48, 16, 39, 8, 96, 2, 2, 0 }, /* 70 Hz */ |
100 | { 640, 480, 39683, 48, 16, 33, 10, 96, 2, 0, 0 }, /* 60 Hz */ |
101 | { 768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0 }, /* 60 Hz */ |
102 | { 800, 600, 24038, 144, 24, 28, 8, 112, 6, 0, 0 }, /* 60 Hz */ |
103 | { 960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0 }, /* 60 Hz */ |
104 | { 1024, 768, 15386, 160, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
105 | { 1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
106 | { 1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0 }, /* 60 Hz */ |
107 | { 1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0 }, /* 60 Hz */ |
108 | { 1600, 1200,/*?*/0, 272, 48, 32, 5, 152, 5, 0, 0 }, /* 60 Hz */ |
109 | #else |
110 | /* You can generate these timings from your XF86Config file using |
111 | the 'modeline2fb' perl script included with the fbset package. |
112 | These timings were generated for Matrox Millenium I, 15" monitor. |
113 | */ |
114 | { 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 2 }, /* 70 Hz */ |
115 | { 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 2 }, /* 72 Hz */ |
116 | { 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 0 }, /* 78 Hz */ |
117 | { 640, 400, 31746, 96, 32, 41, 1, 64, 3, 2, 0 }, /* 85 Hz */ |
118 | { 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 0 }, /* 75 Hz */ |
119 | { 768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0 }, /* 60 Hz */ |
120 | { 800, 600, 20000, 64, 56, 23, 37, 120, 6, 3, 0 }, /* 72 Hz */ |
121 | { 960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0 }, /* 60 Hz */ |
122 | { 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 0 }, /* 70 Hz */ |
123 | { 1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
124 | { 1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0 }, /* 60 Hz */ |
125 | { 1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0 }, /* 60 Hz */ |
126 | { 1600, 1200,/*?*/0, 272, 48, 32, 5, 152, 5, 0, 0 }, /* 60 Hz */ |
127 | #endif |
128 | }; |
129 | enum { |
130 | FBCON_ROTATE_NONE = 0, |
131 | FBCON_ROTATE_CCW = 90, |
132 | FBCON_ROTATE_UD = 180, |
133 | FBCON_ROTATE_CW = 270 |
134 | }; |
135 | |
136 | #define min(a,b) ((a)<(b)?(a):(b)) |
137 | |
138 | /* Initialization/Query functions */ |
139 | static int FB_VideoInit(_THIS, SDL_PixelFormat *vformat); |
140 | static SDL_Rect **FB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
141 | static SDL_Surface *FB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
142 | #ifdef VGA16_FBCON_SUPPORT |
143 | static SDL_Surface *FB_SetVGA16Mode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
144 | #endif |
145 | static int FB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
146 | static void FB_VideoQuit(_THIS); |
147 | |
148 | /* Hardware surface functions */ |
149 | static int FB_InitHWSurfaces(_THIS, SDL_Surface *screen, char *base, int size); |
150 | static void FB_FreeHWSurfaces(_THIS); |
151 | static int FB_AllocHWSurface(_THIS, SDL_Surface *surface); |
152 | static int FB_LockHWSurface(_THIS, SDL_Surface *surface); |
153 | static void FB_UnlockHWSurface(_THIS, SDL_Surface *surface); |
154 | static void FB_FreeHWSurface(_THIS, SDL_Surface *surface); |
155 | static void FB_WaitVBL(_THIS); |
156 | static void FB_WaitIdle(_THIS); |
157 | static int FB_FlipHWSurface(_THIS, SDL_Surface *surface); |
158 | |
159 | /* Internal palette functions */ |
160 | static void FB_SavePalette(_THIS, struct fb_fix_screeninfo *finfo, |
161 | struct fb_var_screeninfo *vinfo); |
162 | static void FB_RestorePalette(_THIS); |
163 | |
164 | /* Shadow buffer functions */ |
165 | static FB_bitBlit FB_blit16; |
166 | static FB_bitBlit FB_blit16blocked; |
167 | |
168 | static int SDL_getpagesize(void) |
169 | { |
170 | #ifdef HAVE_GETPAGESIZE |
171 | return getpagesize(); |
172 | #elif defined(PAGE_SIZE) |
173 | return PAGE_SIZE; |
174 | #else |
175 | #error Can not determine system page size. |
176 | return 4096; /* this is what it USED to be in Linux... */ |
177 | #endif |
178 | } |
179 | |
180 | |
181 | /* Small wrapper for mmap() so we can play nicely with no-mmu hosts |
182 | * (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) |
185 | { |
186 | void *ret; |
187 | ret = mmap(start, length, prot, flags, fd, offset); |
188 | if ( ret == (char *)-1 && (flags & MAP_SHARED) ) { |
189 | ret = mmap(start, length, prot, |
190 | (flags & ~MAP_SHARED) | MAP_PRIVATE, fd, offset); |
191 | } |
192 | return ret; |
193 | } |
194 | |
195 | /* FB driver bootstrap functions */ |
196 | |
197 | static int FB_Available(void) |
198 | { |
199 | int console = -1; |
200 | /* Added check for /fb/0 (devfs) */ |
201 | /* but - use environment variable first... if it fails, still check defaults */ |
202 | int idx = 0; |
203 | const char *SDL_fbdevs[4] = { NULL, "/dev/fb0", "/dev/fb/0", NULL }; |
204 | |
205 | SDL_fbdevs[0] = SDL_getenv("SDL_FBDEV"); |
206 | if( !SDL_fbdevs[0] ) |
207 | idx++; |
208 | for( ; SDL_fbdevs[idx]; idx++ ) |
209 | { |
210 | console = open(SDL_fbdevs[idx], O_RDWR, 0); |
211 | if ( console >= 0 ) { |
212 | close(console); |
213 | break; |
214 | } |
215 | } |
216 | return(console >= 0); |
217 | } |
218 | |
219 | static void FB_DeleteDevice(SDL_VideoDevice *device) |
220 | { |
221 | SDL_free(device->hidden); |
222 | SDL_free(device); |
223 | } |
224 | |
225 | static SDL_VideoDevice *FB_CreateDevice(int devindex) |
226 | { |
227 | SDL_VideoDevice *this; |
228 | |
229 | /* Initialize all variables that we clean on shutdown */ |
230 | this = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
231 | if ( this ) { |
232 | SDL_memset(this, 0, (sizeof *this)); |
233 | this->hidden = (struct SDL_PrivateVideoData *) |
234 | SDL_malloc((sizeof *this->hidden)); |
235 | } |
236 | if ( (this == NULL) || (this->hidden == NULL) ) { |
237 | SDL_OutOfMemory(); |
238 | if ( this ) { |
239 | SDL_free(this); |
240 | } |
241 | return(0); |
242 | } |
243 | SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
244 | wait_vbl = FB_WaitVBL; |
245 | wait_idle = FB_WaitIdle; |
246 | mouse_fd = -1; |
247 | keyboard_fd = -1; |
248 | |
249 | /* Set the function pointers */ |
250 | this->VideoInit = FB_VideoInit; |
251 | this->ListModes = FB_ListModes; |
252 | this->SetVideoMode = FB_SetVideoMode; |
253 | this->SetColors = FB_SetColors; |
254 | this->UpdateRects = NULL; |
255 | this->VideoQuit = FB_VideoQuit; |
256 | this->AllocHWSurface = FB_AllocHWSurface; |
257 | this->CheckHWBlit = NULL; |
258 | this->FillHWRect = NULL; |
259 | this->SetHWColorKey = NULL; |
260 | this->SetHWAlpha = NULL; |
261 | this->LockHWSurface = FB_LockHWSurface; |
262 | this->UnlockHWSurface = FB_UnlockHWSurface; |
263 | this->FlipHWSurface = FB_FlipHWSurface; |
264 | this->FreeHWSurface = FB_FreeHWSurface; |
265 | this->SetCaption = NULL; |
266 | this->SetIcon = NULL; |
267 | this->IconifyWindow = NULL; |
268 | this->GrabInput = NULL; |
269 | this->GetWMInfo = NULL; |
270 | this->InitOSKeymap = FB_InitOSKeymap; |
271 | this->PumpEvents = FB_PumpEvents; |
272 | |
273 | this->free = FB_DeleteDevice; |
274 | |
275 | return this; |
276 | } |
277 | |
278 | VideoBootStrap FBCON_bootstrap = { |
279 | "fbcon", "Linux Framebuffer Console", |
280 | FB_Available, FB_CreateDevice |
281 | }; |
282 | |
283 | #define FB_MODES_DB "/etc/fb.modes" |
284 | |
285 | static int read_fbmodes_line(FILE*f, char* line, int length) |
286 | { |
287 | int blank; |
288 | char* c; |
289 | int i; |
290 | |
291 | blank=0; |
292 | /* find a relevant line */ |
293 | do |
294 | { |
295 | if (!fgets(line,length,f)) |
296 | return 0; |
297 | c=line; |
298 | while(((*c=='\t')||(*c==' '))&&(*c!=0)) |
299 | c++; |
300 | |
301 | if ((*c=='\n')||(*c=='#')||(*c==0)) |
302 | blank=1; |
303 | else |
304 | blank=0; |
305 | } |
306 | while(blank); |
307 | /* remove whitespace at the begining of the string */ |
308 | i=0; |
309 | do |
310 | { |
311 | line[i]=c[i]; |
312 | i++; |
313 | } |
314 | while(c[i]!=0); |
315 | return 1; |
316 | } |
317 | |
318 | static int read_fbmodes_mode(FILE *f, struct fb_var_screeninfo *vinfo) |
319 | { |
320 | char line[1024]; |
321 | char option[256]; |
322 | |
323 | /* Find a "geometry" */ |
324 | do { |
325 | if (read_fbmodes_line(f, line, sizeof(line))==0) |
326 | return 0; |
327 | if (SDL_strncmp(line,"geometry",8)==0) |
328 | break; |
329 | } |
330 | while(1); |
331 | |
332 | SDL_sscanf(line, "geometry %d %d %d %d %d", &vinfo->xres, &vinfo->yres, |
333 | &vinfo->xres_virtual, &vinfo->yres_virtual, &vinfo->bits_per_pixel); |
334 | if (read_fbmodes_line(f, line, sizeof(line))==0) |
335 | return 0; |
336 | |
337 | SDL_sscanf(line, "timings %d %d %d %d %d %d %d", &vinfo->pixclock, |
338 | &vinfo->left_margin, &vinfo->right_margin, &vinfo->upper_margin, |
339 | &vinfo->lower_margin, &vinfo->hsync_len, &vinfo->vsync_len); |
340 | |
341 | vinfo->sync=0; |
342 | vinfo->vmode=FB_VMODE_NONINTERLACED; |
343 | |
344 | /* Parse misc options */ |
345 | do { |
346 | if (read_fbmodes_line(f, line, sizeof(line))==0) |
347 | return 0; |
348 | |
349 | if (SDL_strncmp(line,"hsync",5)==0) { |
350 | SDL_sscanf(line,"hsync %s",option); |
351 | if (SDL_strncmp(option,"high",4)==0) |
352 | vinfo->sync |= FB_SYNC_HOR_HIGH_ACT; |
353 | } |
354 | else if (SDL_strncmp(line,"vsync",5)==0) { |
355 | SDL_sscanf(line,"vsync %s",option); |
356 | if (SDL_strncmp(option,"high",4)==0) |
357 | vinfo->sync |= FB_SYNC_VERT_HIGH_ACT; |
358 | } |
359 | else if (SDL_strncmp(line,"csync",5)==0) { |
360 | SDL_sscanf(line,"csync %s",option); |
361 | if (SDL_strncmp(option,"high",4)==0) |
362 | vinfo->sync |= FB_SYNC_COMP_HIGH_ACT; |
363 | } |
364 | else if (SDL_strncmp(line,"extsync",5)==0) { |
365 | SDL_sscanf(line,"extsync %s",option); |
366 | if (SDL_strncmp(option,"true",4)==0) |
367 | vinfo->sync |= FB_SYNC_EXT; |
368 | } |
369 | else if (SDL_strncmp(line,"laced",5)==0) { |
370 | SDL_sscanf(line,"laced %s",option); |
371 | if (SDL_strncmp(option,"true",4)==0) |
372 | vinfo->vmode |= FB_VMODE_INTERLACED; |
373 | } |
374 | else if (SDL_strncmp(line,"double",6)==0) { |
375 | SDL_sscanf(line,"double %s",option); |
376 | if (SDL_strncmp(option,"true",4)==0) |
377 | vinfo->vmode |= FB_VMODE_DOUBLE; |
378 | } |
379 | } |
380 | while(SDL_strncmp(line,"endmode",7)!=0); |
381 | |
382 | return 1; |
383 | } |
384 | |
385 | static int FB_CheckMode(_THIS, struct fb_var_screeninfo *vinfo, |
386 | int index, unsigned int *w, unsigned int *h) |
387 | { |
388 | int mode_okay; |
389 | |
390 | mode_okay = 0; |
391 | vinfo->bits_per_pixel = (index+1)*8; |
392 | vinfo->xres = *w; |
393 | vinfo->xres_virtual = *w; |
394 | vinfo->yres = *h; |
395 | vinfo->yres_virtual = *h; |
396 | vinfo->activate = FB_ACTIVATE_TEST; |
397 | if ( ioctl(console_fd, FBIOPUT_VSCREENINFO, vinfo) == 0 ) { |
398 | #ifdef FBCON_DEBUG |
399 | 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); |
400 | #endif |
401 | if ( (((vinfo->bits_per_pixel+7)/8)-1) == index ) { |
402 | *w = vinfo->xres; |
403 | *h = vinfo->yres; |
404 | mode_okay = 1; |
405 | } |
406 | } |
407 | return mode_okay; |
408 | } |
409 | |
410 | static int FB_AddMode(_THIS, int index, unsigned int w, unsigned int h, int check_timings) |
411 | { |
412 | SDL_Rect *mode; |
413 | int i; |
414 | int next_mode; |
415 | |
416 | /* Check to see if we already have this mode */ |
417 | if ( SDL_nummodes[index] > 0 ) { |
418 | mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
419 | if ( (mode->w == w) && (mode->h == h) ) { |
420 | #ifdef FBCON_DEBUG |
421 | fprintf(stderr, "We already have mode %dx%d at %d bytes per pixel\n", w, h, index+1); |
422 | #endif |
423 | return(0); |
424 | } |
425 | } |
426 | |
427 | /* Only allow a mode if we have a valid timing for it */ |
428 | if ( check_timings ) { |
429 | int found_timing = 0; |
430 | for ( i=0; i<(sizeof(vesa_timings)/sizeof(vesa_timings[0])); ++i ) { |
431 | if ( (w == vesa_timings[i].xres) && |
432 | (h == vesa_timings[i].yres) && vesa_timings[i].pixclock ) { |
433 | found_timing = 1; |
434 | break; |
435 | } |
436 | } |
437 | if ( !found_timing ) { |
438 | #ifdef FBCON_DEBUG |
439 | fprintf(stderr, "No valid timing line for mode %dx%d\n", w, h); |
440 | #endif |
441 | return(0); |
442 | } |
443 | } |
444 | |
445 | /* Set up the new video mode rectangle */ |
446 | mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
447 | if ( mode == NULL ) { |
448 | SDL_OutOfMemory(); |
449 | return(-1); |
450 | } |
451 | mode->x = 0; |
452 | mode->y = 0; |
453 | mode->w = w; |
454 | mode->h = h; |
455 | #ifdef FBCON_DEBUG |
456 | fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h, index+1); |
457 | #endif |
458 | |
459 | /* Allocate the new list of modes, and fill in the new mode */ |
460 | next_mode = SDL_nummodes[index]; |
461 | SDL_modelist[index] = (SDL_Rect **) |
462 | SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
463 | if ( SDL_modelist[index] == NULL ) { |
464 | SDL_OutOfMemory(); |
465 | SDL_nummodes[index] = 0; |
466 | SDL_free(mode); |
467 | return(-1); |
468 | } |
469 | SDL_modelist[index][next_mode] = mode; |
470 | SDL_modelist[index][next_mode+1] = NULL; |
471 | SDL_nummodes[index]++; |
472 | |
473 | return(0); |
474 | } |
475 | |
476 | static int cmpmodes(const void *va, const void *vb) |
477 | { |
478 | const SDL_Rect *a = *(const SDL_Rect**)va; |
479 | const SDL_Rect *b = *(const SDL_Rect**)vb; |
480 | if ( a->h == b->h ) |
481 | return b->w - a->w; |
482 | else |
483 | return b->h - a->h; |
484 | } |
485 | |
486 | static void FB_SortModes(_THIS) |
487 | { |
488 | int i; |
489 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
490 | if ( SDL_nummodes[i] > 0 ) { |
491 | SDL_qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes); |
492 | } |
493 | } |
494 | } |
495 | |
496 | static int FB_VideoInit(_THIS, SDL_PixelFormat *vformat) |
497 | { |
498 | const int pagesize = SDL_getpagesize(); |
499 | struct fb_fix_screeninfo finfo; |
500 | struct fb_var_screeninfo vinfo; |
501 | int i, j; |
502 | int current_index; |
503 | unsigned int current_w; |
504 | unsigned int current_h; |
505 | const char *SDL_fbdev; |
506 | const char *rotation; |
507 | FILE *modesdb; |
508 | |
509 | /* Initialize the library */ |
510 | SDL_fbdev = SDL_getenv("SDL_FBDEV"); |
511 | if ( SDL_fbdev == NULL ) { |
512 | SDL_fbdev = "/dev/fb0"; |
513 | } |
514 | console_fd = open(SDL_fbdev, O_RDWR, 0); |
515 | if ( console_fd < 0 ) { |
516 | SDL_SetError("Unable to open %s", SDL_fbdev); |
517 | return(-1); |
518 | } |
519 | |
520 | #if !SDL_THREADS_DISABLED |
521 | /* Create the hardware surface lock mutex */ |
522 | hw_lock = SDL_CreateMutex(); |
523 | if ( hw_lock == NULL ) { |
524 | SDL_SetError("Unable to create lock mutex"); |
525 | FB_VideoQuit(this); |
526 | return(-1); |
527 | } |
528 | #endif |
529 | |
530 | /* Get the type of video hardware */ |
531 | if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
532 | SDL_SetError("Couldn't get console hardware info"); |
533 | FB_VideoQuit(this); |
534 | return(-1); |
535 | } |
536 | switch (finfo.type) { |
537 | case FB_TYPE_PACKED_PIXELS: |
538 | /* Supported, no worries.. */ |
539 | break; |
540 | #ifdef VGA16_FBCON_SUPPORT |
541 | case FB_TYPE_VGA_PLANES: |
542 | /* VGA16 is supported, but that's it */ |
543 | if ( finfo.type_aux == FB_AUX_VGA_PLANES_VGA4 ) { |
544 | if ( ioperm(0x3b4, 0x3df - 0x3b4 + 1, 1) < 0 ) { |
545 | SDL_SetError("No I/O port permissions"); |
546 | FB_VideoQuit(this); |
547 | return(-1); |
548 | } |
549 | this->SetVideoMode = FB_SetVGA16Mode; |
550 | break; |
551 | } |
552 | /* Fall through to unsupported case */ |
553 | #endif /* VGA16_FBCON_SUPPORT */ |
554 | default: |
555 | SDL_SetError("Unsupported console hardware"); |
556 | FB_VideoQuit(this); |
557 | return(-1); |
558 | } |
559 | switch (finfo.visual) { |
560 | case FB_VISUAL_TRUECOLOR: |
561 | case FB_VISUAL_PSEUDOCOLOR: |
562 | case FB_VISUAL_STATIC_PSEUDOCOLOR: |
563 | case FB_VISUAL_DIRECTCOLOR: |
564 | break; |
565 | default: |
566 | SDL_SetError("Unsupported console hardware"); |
567 | FB_VideoQuit(this); |
568 | return(-1); |
569 | } |
570 | |
571 | /* Check if the user wants to disable hardware acceleration */ |
572 | { const char *fb_accel; |
573 | fb_accel = SDL_getenv("SDL_FBACCEL"); |
574 | if ( fb_accel ) { |
575 | finfo.accel = SDL_atoi(fb_accel); |
576 | } |
577 | } |
578 | |
579 | /* Memory map the device, compensating for buggy PPC mmap() */ |
580 | mapped_offset = (((long)finfo.smem_start) - |
581 | (((long)finfo.smem_start)&~(pagesize-1))); |
582 | mapped_memlen = finfo.smem_len+mapped_offset; |
583 | mapped_mem = do_mmap(NULL, mapped_memlen, |
584 | PROT_READ|PROT_WRITE, MAP_SHARED, console_fd, 0); |
585 | if ( mapped_mem == (char *)-1 ) { |
586 | SDL_SetError("Unable to memory map the video hardware"); |
587 | mapped_mem = NULL; |
588 | FB_VideoQuit(this); |
589 | return(-1); |
590 | } |
591 | |
592 | /* Determine the current screen depth */ |
593 | if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
594 | SDL_SetError("Couldn't get console pixel format"); |
595 | FB_VideoQuit(this); |
596 | return(-1); |
597 | } |
598 | vformat->BitsPerPixel = vinfo.bits_per_pixel; |
599 | if ( vformat->BitsPerPixel < 8 ) { |
600 | /* Assuming VGA16, we handle this via a shadow framebuffer */ |
601 | vformat->BitsPerPixel = 8; |
602 | } |
603 | for ( i=0; i<vinfo.red.length; ++i ) { |
604 | vformat->Rmask <<= 1; |
605 | vformat->Rmask |= (0x00000001<<vinfo.red.offset); |
606 | } |
607 | for ( i=0; i<vinfo.green.length; ++i ) { |
608 | vformat->Gmask <<= 1; |
609 | vformat->Gmask |= (0x00000001<<vinfo.green.offset); |
610 | } |
611 | for ( i=0; i<vinfo.blue.length; ++i ) { |
612 | vformat->Bmask <<= 1; |
613 | vformat->Bmask |= (0x00000001<<vinfo.blue.offset); |
614 | } |
615 | saved_vinfo = vinfo; |
616 | |
617 | /* Save hardware palette, if needed */ |
618 | FB_SavePalette(this, &finfo, &vinfo); |
619 | |
620 | /* If the I/O registers are available, memory map them so we |
621 | can take advantage of any supported hardware acceleration. |
622 | */ |
623 | vinfo.accel_flags = 0; /* Temporarily reserve registers */ |
624 | ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo); |
625 | if ( finfo.accel && finfo.mmio_len ) { |
626 | mapped_iolen = finfo.mmio_len; |
627 | mapped_io = do_mmap(NULL, mapped_iolen, PROT_READ|PROT_WRITE, |
628 | MAP_SHARED, console_fd, mapped_memlen); |
629 | if ( mapped_io == (char *)-1 ) { |
630 | /* Hmm, failed to memory map I/O registers */ |
631 | mapped_io = NULL; |
632 | } |
633 | } |
634 | |
635 | rotate = FBCON_ROTATE_NONE; |
636 | rotation = SDL_getenv("SDL_VIDEO_FBCON_ROTATION"); |
637 | if (rotation != NULL) { |
638 | if (SDL_strlen(rotation) == 0) { |
639 | shadow_fb = 0; |
640 | rotate = FBCON_ROTATE_NONE; |
641 | #ifdef FBCON_DEBUG |
642 | printf("Not rotating, no shadow\n"); |
643 | #endif |
644 | } else if (!SDL_strcmp(rotation, "NONE")) { |
645 | shadow_fb = 1; |
646 | rotate = FBCON_ROTATE_NONE; |
647 | #ifdef FBCON_DEBUG |
648 | printf("Not rotating, but still using shadow\n"); |
649 | #endif |
650 | } else if (!SDL_strcmp(rotation, "CW")) { |
651 | shadow_fb = 1; |
652 | rotate = FBCON_ROTATE_CW; |
653 | #ifdef FBCON_DEBUG |
654 | printf("Rotating screen clockwise\n"); |
655 | #endif |
656 | } else if (!SDL_strcmp(rotation, "CCW")) { |
657 | shadow_fb = 1; |
658 | rotate = FBCON_ROTATE_CCW; |
659 | #ifdef FBCON_DEBUG |
660 | printf("Rotating screen counter clockwise\n"); |
661 | #endif |
662 | } else if (!SDL_strcmp(rotation, "UD")) { |
663 | shadow_fb = 1; |
664 | rotate = FBCON_ROTATE_UD; |
665 | #ifdef FBCON_DEBUG |
666 | printf("Rotating screen upside down\n"); |
667 | #endif |
668 | } else { |
669 | SDL_SetError("\"%s\" is not a valid value for " |
670 | "SDL_VIDEO_FBCON_ROTATION", rotation); |
671 | return(-1); |
672 | } |
673 | } |
674 | |
675 | if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
676 | current_w = vinfo.yres; |
677 | current_h = vinfo.xres; |
678 | } else { |
679 | current_w = vinfo.xres; |
680 | current_h = vinfo.yres; |
681 | } |
682 | |
683 | /* Query for the list of available video modes */ |
684 | current_index = ((vinfo.bits_per_pixel+7)/8)-1; |
685 | modesdb = fopen(FB_MODES_DB, "r"); |
686 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
687 | SDL_nummodes[i] = 0; |
688 | SDL_modelist[i] = NULL; |
689 | } |
690 | if ( SDL_getenv("SDL_FB_BROKEN_MODES") != NULL ) { |
691 | FB_AddMode(this, current_index, current_w, current_h, 0); |
692 | } else if(modesdb) { |
693 | while ( read_fbmodes_mode(modesdb, &vinfo) ) { |
694 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
695 | unsigned int w, h; |
696 | |
697 | if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
698 | w = vinfo.yres; |
699 | h = vinfo.xres; |
700 | } else { |
701 | w = vinfo.xres; |
702 | h = vinfo.yres; |
703 | } |
704 | /* See if we are querying for the current mode */ |
705 | if ( i == current_index ) { |
706 | if ( (current_w > w) || (current_h > h) ) { |
707 | /* Only check once */ |
708 | FB_AddMode(this, i, current_w, current_h, 0); |
709 | current_index = -1; |
710 | } |
711 | } |
712 | if ( FB_CheckMode(this, &vinfo, i, &w, &h) ) { |
713 | FB_AddMode(this, i, w, h, 0); |
714 | } |
715 | } |
716 | } |
717 | fclose(modesdb); |
718 | FB_SortModes(this); |
719 | } else { |
720 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
721 | for ( j=0; j<(sizeof(checkres)/sizeof(checkres[0])); ++j ) { |
722 | unsigned int w, h; |
723 | |
724 | if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
725 | w = checkres[j].h; |
726 | h = checkres[j].w; |
727 | } else { |
728 | w = checkres[j].w; |
729 | h = checkres[j].h; |
730 | } |
731 | /* See if we are querying for the current mode */ |
732 | if ( i == current_index ) { |
733 | if ( (current_w > w) || (current_h > h) ) { |
734 | /* Only check once */ |
735 | FB_AddMode(this, i, current_w, current_h, 0); |
736 | current_index = -1; |
737 | } |
738 | } |
739 | if ( FB_CheckMode(this, &vinfo, i, &w, &h) ) { |
740 | FB_AddMode(this, i, w, h, 1); |
741 | } |
742 | } |
743 | } |
744 | } |
745 | |
746 | this->info.current_w = current_w; |
747 | this->info.current_h = current_h; |
748 | this->info.wm_available = 0; |
749 | this->info.hw_available = !shadow_fb; |
750 | this->info.video_mem = shadow_fb ? 0 : finfo.smem_len/1024; |
751 | /* Fill in our hardware acceleration capabilities */ |
752 | if ( mapped_io ) { |
753 | switch (finfo.accel) { |
754 | case FB_ACCEL_MATROX_MGA2064W: |
755 | case FB_ACCEL_MATROX_MGA1064SG: |
756 | case FB_ACCEL_MATROX_MGA2164W: |
757 | case FB_ACCEL_MATROX_MGA2164W_AGP: |
758 | case FB_ACCEL_MATROX_MGAG100: |
759 | /*case FB_ACCEL_MATROX_MGAG200: G200 acceleration broken! */ |
760 | case FB_ACCEL_MATROX_MGAG400: |
761 | #ifdef FBACCEL_DEBUG |
762 | printf("Matrox hardware accelerator!\n"); |
763 | #endif |
764 | FB_MatroxAccel(this, finfo.accel); |
765 | break; |
766 | case FB_ACCEL_3DFX_BANSHEE: |
767 | #ifdef FBACCEL_DEBUG |
768 | printf("3DFX hardware accelerator!\n"); |
769 | #endif |
770 | FB_3DfxAccel(this, finfo.accel); |
771 | break; |
772 | case FB_ACCEL_NV3: |
773 | case FB_ACCEL_NV4: |
774 | #ifdef FBACCEL_DEBUG |
775 | printf("NVidia hardware accelerator!\n"); |
776 | #endif |
777 | FB_RivaAccel(this, finfo.accel); |
778 | break; |
779 | default: |
780 | #ifdef FBACCEL_DEBUG |
781 | printf("Unknown hardware accelerator.\n"); |
782 | #endif |
783 | break; |
784 | } |
785 | } |
786 | |
787 | if (shadow_fb) { |
788 | shadow_mem = (char *)SDL_malloc(mapped_memlen); |
789 | if (shadow_mem == NULL) { |
790 | SDL_SetError("No memory for shadow"); |
791 | return (-1); |
792 | } |
793 | } |
794 | |
795 | /* Enable mouse and keyboard support */ |
796 | if ( FB_OpenKeyboard(this) < 0 ) { |
797 | FB_VideoQuit(this); |
798 | return(-1); |
799 | } |
800 | if ( FB_OpenMouse(this) < 0 ) { |
801 | const char *sdl_nomouse; |
802 | |
803 | sdl_nomouse = SDL_getenv("SDL_NOMOUSE"); |
804 | if ( ! sdl_nomouse ) { |
805 | SDL_SetError("Unable to open mouse"); |
806 | FB_VideoQuit(this); |
807 | return(-1); |
808 | } |
809 | } |
810 | |
811 | /* We're done! */ |
812 | return(0); |
813 | } |
814 | |
815 | static SDL_Rect **FB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
816 | { |
817 | return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); |
818 | } |
819 | |
820 | /* Various screen update functions available */ |
821 | static void FB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
822 | #ifdef VGA16_FBCON_SUPPORT |
823 | static void FB_VGA16Update(_THIS, int numrects, SDL_Rect *rects); |
824 | #endif |
825 | |
826 | #ifdef FBCON_DEBUG |
827 | static void print_vinfo(struct fb_var_screeninfo *vinfo) |
828 | { |
829 | fprintf(stderr, "Printing vinfo:\n"); |
830 | fprintf(stderr, "\txres: %d\n", vinfo->xres); |
831 | fprintf(stderr, "\tyres: %d\n", vinfo->yres); |
832 | fprintf(stderr, "\txres_virtual: %d\n", vinfo->xres_virtual); |
833 | fprintf(stderr, "\tyres_virtual: %d\n", vinfo->yres_virtual); |
834 | fprintf(stderr, "\txoffset: %d\n", vinfo->xoffset); |
835 | fprintf(stderr, "\tyoffset: %d\n", vinfo->yoffset); |
836 | fprintf(stderr, "\tbits_per_pixel: %d\n", vinfo->bits_per_pixel); |
837 | fprintf(stderr, "\tgrayscale: %d\n", vinfo->grayscale); |
838 | fprintf(stderr, "\tnonstd: %d\n", vinfo->nonstd); |
839 | fprintf(stderr, "\tactivate: %d\n", vinfo->activate); |
840 | fprintf(stderr, "\theight: %d\n", vinfo->height); |
841 | fprintf(stderr, "\twidth: %d\n", vinfo->width); |
842 | fprintf(stderr, "\taccel_flags: %d\n", vinfo->accel_flags); |
843 | fprintf(stderr, "\tpixclock: %d\n", vinfo->pixclock); |
844 | fprintf(stderr, "\tleft_margin: %d\n", vinfo->left_margin); |
845 | fprintf(stderr, "\tright_margin: %d\n", vinfo->right_margin); |
846 | fprintf(stderr, "\tupper_margin: %d\n", vinfo->upper_margin); |
847 | fprintf(stderr, "\tlower_margin: %d\n", vinfo->lower_margin); |
848 | fprintf(stderr, "\thsync_len: %d\n", vinfo->hsync_len); |
849 | fprintf(stderr, "\tvsync_len: %d\n", vinfo->vsync_len); |
850 | fprintf(stderr, "\tsync: %d\n", vinfo->sync); |
851 | fprintf(stderr, "\tvmode: %d\n", vinfo->vmode); |
852 | fprintf(stderr, "\tred: %d/%d\n", vinfo->red.length, vinfo->red.offset); |
853 | fprintf(stderr, "\tgreen: %d/%d\n", vinfo->green.length, vinfo->green.offset); |
854 | fprintf(stderr, "\tblue: %d/%d\n", vinfo->blue.length, vinfo->blue.offset); |
855 | fprintf(stderr, "\talpha: %d/%d\n", vinfo->transp.length, vinfo->transp.offset); |
856 | } |
857 | static void print_finfo(struct fb_fix_screeninfo *finfo) |
858 | { |
859 | fprintf(stderr, "Printing finfo:\n"); |
860 | fprintf(stderr, "\tsmem_start = %p\n", (char *)finfo->smem_start); |
861 | fprintf(stderr, "\tsmem_len = %d\n", finfo->smem_len); |
862 | fprintf(stderr, "\ttype = %d\n", finfo->type); |
863 | fprintf(stderr, "\ttype_aux = %d\n", finfo->type_aux); |
864 | fprintf(stderr, "\tvisual = %d\n", finfo->visual); |
865 | fprintf(stderr, "\txpanstep = %d\n", finfo->xpanstep); |
866 | fprintf(stderr, "\typanstep = %d\n", finfo->ypanstep); |
867 | fprintf(stderr, "\tywrapstep = %d\n", finfo->ywrapstep); |
868 | fprintf(stderr, "\tline_length = %d\n", finfo->line_length); |
869 | fprintf(stderr, "\tmmio_start = %p\n", (char *)finfo->mmio_start); |
870 | fprintf(stderr, "\tmmio_len = %d\n", finfo->mmio_len); |
871 | fprintf(stderr, "\taccel = %d\n", finfo->accel); |
872 | } |
873 | #endif |
874 | |
875 | static int choose_fbmodes_mode(struct fb_var_screeninfo *vinfo) |
876 | { |
877 | int matched; |
878 | FILE *modesdb; |
879 | struct fb_var_screeninfo cinfo; |
880 | |
881 | matched = 0; |
882 | modesdb = fopen(FB_MODES_DB, "r"); |
883 | if ( modesdb ) { |
884 | /* Parse the mode definition file */ |
885 | while ( read_fbmodes_mode(modesdb, &cinfo) ) { |
886 | if ( (vinfo->xres == cinfo.xres && vinfo->yres == cinfo.yres) && |
887 | (!matched || (vinfo->bits_per_pixel == cinfo.bits_per_pixel)) ) { |
888 | vinfo->pixclock = cinfo.pixclock; |
889 | vinfo->left_margin = cinfo.left_margin; |
890 | vinfo->right_margin = cinfo.right_margin; |
891 | vinfo->upper_margin = cinfo.upper_margin; |
892 | vinfo->lower_margin = cinfo.lower_margin; |
893 | vinfo->hsync_len = cinfo.hsync_len; |
894 | vinfo->vsync_len = cinfo.vsync_len; |
895 | if ( matched ) { |
896 | break; |
897 | } |
898 | matched = 1; |
899 | } |
900 | } |
901 | fclose(modesdb); |
902 | } |
903 | return(matched); |
904 | } |
905 | |
906 | static int choose_vesa_mode(struct fb_var_screeninfo *vinfo) |
907 | { |
908 | int matched; |
909 | int i; |
910 | |
911 | /* Check for VESA timings */ |
912 | matched = 0; |
913 | for ( i=0; i<(sizeof(vesa_timings)/sizeof(vesa_timings[0])); ++i ) { |
914 | if ( (vinfo->xres == vesa_timings[i].xres) && |
915 | (vinfo->yres == vesa_timings[i].yres) ) { |
916 | #ifdef FBCON_DEBUG |
917 | fprintf(stderr, "Using VESA timings for %dx%d\n", |
918 | vinfo->xres, vinfo->yres); |
919 | #endif |
920 | if ( vesa_timings[i].pixclock ) { |
921 | vinfo->pixclock = vesa_timings[i].pixclock; |
922 | } |
923 | vinfo->left_margin = vesa_timings[i].left; |
924 | vinfo->right_margin = vesa_timings[i].right; |
925 | vinfo->upper_margin = vesa_timings[i].upper; |
926 | vinfo->lower_margin = vesa_timings[i].lower; |
927 | vinfo->hsync_len = vesa_timings[i].hslen; |
928 | vinfo->vsync_len = vesa_timings[i].vslen; |
929 | vinfo->sync = vesa_timings[i].sync; |
930 | vinfo->vmode = vesa_timings[i].vmode; |
931 | matched = 1; |
932 | break; |
933 | } |
934 | } |
935 | return(matched); |
936 | } |
937 | |
938 | #ifdef VGA16_FBCON_SUPPORT |
939 | static SDL_Surface *FB_SetVGA16Mode(_THIS, SDL_Surface *current, |
940 | int width, int height, int bpp, Uint32 flags) |
941 | { |
942 | struct fb_fix_screeninfo finfo; |
943 | struct fb_var_screeninfo vinfo; |
944 | |
945 | /* Set the terminal into graphics mode */ |
946 | if ( FB_EnterGraphicsMode(this) < 0 ) { |
947 | return(NULL); |
948 | } |
949 | |
950 | /* Restore the original palette */ |
951 | FB_RestorePalette(this); |
952 | |
953 | /* Set the video mode and get the final screen format */ |
954 | if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
955 | SDL_SetError("Couldn't get console screen info"); |
956 | return(NULL); |
957 | } |
958 | cache_vinfo = vinfo; |
959 | #ifdef FBCON_DEBUG |
960 | fprintf(stderr, "Printing actual vinfo:\n"); |
961 | print_vinfo(&vinfo); |
962 | #endif |
963 | if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { |
964 | return(NULL); |
965 | } |
966 | current->format->palette->ncolors = 16; |
967 | |
968 | /* Get the fixed information about the console hardware. |
969 | This is necessary since finfo.line_length changes. |
970 | */ |
971 | if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
972 | SDL_SetError("Couldn't get console hardware info"); |
973 | return(NULL); |
974 | } |
975 | #ifdef FBCON_DEBUG |
976 | fprintf(stderr, "Printing actual finfo:\n"); |
977 | print_finfo(&finfo); |
978 | #endif |
979 | |
980 | /* Save hardware palette, if needed */ |
981 | FB_SavePalette(this, &finfo, &vinfo); |
982 | |
983 | /* Set up the new mode framebuffer */ |
984 | current->flags = SDL_FULLSCREEN; |
985 | current->w = vinfo.xres; |
986 | current->h = vinfo.yres; |
987 | current->pitch = current->w; |
988 | current->pixels = SDL_malloc(current->h*current->pitch); |
989 | |
990 | /* Set the update rectangle function */ |
991 | this->UpdateRects = FB_VGA16Update; |
992 | |
993 | /* We're done */ |
994 | return(current); |
995 | } |
996 | #endif /* VGA16_FBCON_SUPPORT */ |
997 | |
998 | static SDL_Surface *FB_SetVideoMode(_THIS, SDL_Surface *current, |
999 | int width, int height, int bpp, Uint32 flags) |
1000 | { |
1001 | struct fb_fix_screeninfo finfo; |
1002 | struct fb_var_screeninfo vinfo; |
1003 | int i; |
1004 | Uint32 Rmask; |
1005 | Uint32 Gmask; |
1006 | Uint32 Bmask; |
1007 | char *surfaces_mem; |
1008 | int surfaces_len; |
1009 | |
1010 | /* Set the terminal into graphics mode */ |
1011 | if ( FB_EnterGraphicsMode(this) < 0 ) { |
1012 | return(NULL); |
1013 | } |
1014 | |
1015 | /* Restore the original palette */ |
1016 | FB_RestorePalette(this); |
1017 | |
1018 | /* Set the video mode and get the final screen format */ |
1019 | if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
1020 | SDL_SetError("Couldn't get console screen info"); |
1021 | return(NULL); |
1022 | } |
1023 | #ifdef FBCON_DEBUG |
1024 | fprintf(stderr, "Printing original vinfo:\n"); |
1025 | print_vinfo(&vinfo); |
1026 | #endif |
1027 | /* Do not use double buffering with shadow buffer */ |
1028 | if (shadow_fb) { |
1029 | flags &= ~SDL_DOUBLEBUF; |
1030 | } |
1031 | |
1032 | if ( (vinfo.xres != width) || (vinfo.yres != height) || |
1033 | (vinfo.bits_per_pixel != bpp) || (flags & SDL_DOUBLEBUF) ) { |
1034 | vinfo.activate = FB_ACTIVATE_NOW; |
1035 | vinfo.accel_flags = 0; |
1036 | vinfo.bits_per_pixel = bpp; |
1037 | vinfo.xres = width; |
1038 | vinfo.xres_virtual = width; |
1039 | vinfo.yres = height; |
1040 | if ( flags & SDL_DOUBLEBUF ) { |
1041 | vinfo.yres_virtual = height*2; |
1042 | } else { |
1043 | vinfo.yres_virtual = height; |
1044 | } |
1045 | vinfo.xoffset = 0; |
1046 | vinfo.yoffset = 0; |
1047 | vinfo.red.length = vinfo.red.offset = 0; |
1048 | vinfo.green.length = vinfo.green.offset = 0; |
1049 | vinfo.blue.length = vinfo.blue.offset = 0; |
1050 | vinfo.transp.length = vinfo.transp.offset = 0; |
1051 | if ( ! choose_fbmodes_mode(&vinfo) ) { |
1052 | choose_vesa_mode(&vinfo); |
1053 | } |
1054 | #ifdef FBCON_DEBUG |
1055 | fprintf(stderr, "Printing wanted vinfo:\n"); |
1056 | print_vinfo(&vinfo); |
1057 | #endif |
1058 | if ( !shadow_fb && |
1059 | ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo) < 0 ) { |
1060 | vinfo.yres_virtual = height; |
1061 | if ( ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo) < 0 ) { |
1062 | SDL_SetError("Couldn't set console screen info"); |
1063 | return(NULL); |
1064 | } |
1065 | } |
1066 | } else { |
1067 | int maxheight; |
1068 | |
1069 | /* Figure out how much video memory is available */ |
1070 | if ( flags & SDL_DOUBLEBUF ) { |
1071 | maxheight = height*2; |
1072 | } else { |
1073 | maxheight = height; |
1074 | } |
1075 | if ( vinfo.yres_virtual > maxheight ) { |
1076 | vinfo.yres_virtual = maxheight; |
1077 | } |
1078 | } |
1079 | cache_vinfo = vinfo; |
1080 | #ifdef FBCON_DEBUG |
1081 | fprintf(stderr, "Printing actual vinfo:\n"); |
1082 | print_vinfo(&vinfo); |
1083 | #endif |
1084 | Rmask = 0; |
1085 | for ( i=0; i<vinfo.red.length; ++i ) { |
1086 | Rmask <<= 1; |
1087 | Rmask |= (0x00000001<<vinfo.red.offset); |
1088 | } |
1089 | Gmask = 0; |
1090 | for ( i=0; i<vinfo.green.length; ++i ) { |
1091 | Gmask <<= 1; |
1092 | Gmask |= (0x00000001<<vinfo.green.offset); |
1093 | } |
1094 | Bmask = 0; |
1095 | for ( i=0; i<vinfo.blue.length; ++i ) { |
1096 | Bmask <<= 1; |
1097 | Bmask |= (0x00000001<<vinfo.blue.offset); |
1098 | } |
1099 | if ( ! SDL_ReallocFormat(current, vinfo.bits_per_pixel, |
1100 | Rmask, Gmask, Bmask, 0) ) { |
1101 | return(NULL); |
1102 | } |
1103 | |
1104 | /* Get the fixed information about the console hardware. |
1105 | This is necessary since finfo.line_length changes. |
1106 | */ |
1107 | if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
1108 | SDL_SetError("Couldn't get console hardware info"); |
1109 | return(NULL); |
1110 | } |
1111 | |
1112 | /* Save hardware palette, if needed */ |
1113 | FB_SavePalette(this, &finfo, &vinfo); |
1114 | |
1115 | if (shadow_fb) { |
1116 | if (vinfo.bits_per_pixel == 16) { |
1117 | blitFunc = (rotate == FBCON_ROTATE_NONE || |
1118 | rotate == FBCON_ROTATE_UD) ? |
1119 | FB_blit16 : FB_blit16blocked; |
1120 | } else { |
1121 | #ifdef FBCON_DEBUG |
1122 | fprintf(stderr, "Init vinfo:\n"); |
1123 | print_vinfo(&vinfo); |
1124 | #endif |
1125 | SDL_SetError("Using software buffer, but no blitter " |
1126 | "function is available for %d bpp.", |
1127 | vinfo.bits_per_pixel); |
1128 | return(NULL); |
1129 | } |
1130 | } |
1131 | |
1132 | /* Set up the new mode framebuffer */ |
1133 | current->flags &= SDL_FULLSCREEN; |
1134 | if (shadow_fb) { |
1135 | current->flags |= SDL_SWSURFACE; |
1136 | } else { |
1137 | current->flags |= SDL_HWSURFACE; |
1138 | } |
1139 | current->w = vinfo.xres; |
1140 | current->h = vinfo.yres; |
1141 | if (shadow_fb) { |
1142 | current->pitch = current->w * ((vinfo.bits_per_pixel + 7) / 8); |
1143 | current->pixels = shadow_mem; |
1144 | physlinebytes = finfo.line_length; |
1145 | } else { |
1146 | current->pitch = finfo.line_length; |
1147 | current->pixels = mapped_mem+mapped_offset; |
1148 | } |
1149 | |
1150 | /* Set up the information for hardware surfaces */ |
1151 | surfaces_mem = (char *)current->pixels + |
1152 | vinfo.yres_virtual*current->pitch; |
1153 | surfaces_len = (shadow_fb) ? |
1154 | 0 : (mapped_memlen-(surfaces_mem-mapped_mem)); |
1155 | |
1156 | FB_FreeHWSurfaces(this); |
1157 | FB_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
1158 | |
1159 | /* Let the application know we have a hardware palette */ |
1160 | switch (finfo.visual) { |
1161 | case FB_VISUAL_PSEUDOCOLOR: |
1162 | current->flags |= SDL_HWPALETTE; |
1163 | break; |
1164 | default: |
1165 | break; |
1166 | } |
1167 | |
1168 | /* Update for double-buffering, if we can */ |
1169 | if ( flags & SDL_DOUBLEBUF ) { |
1170 | if ( vinfo.yres_virtual == (height*2) ) { |
1171 | current->flags |= SDL_DOUBLEBUF; |
1172 | flip_page = 0; |
1173 | flip_address[0] = (char *)current->pixels; |
1174 | flip_address[1] = (char *)current->pixels+ |
1175 | current->h*current->pitch; |
1176 | this->screen = current; |
1177 | FB_FlipHWSurface(this, current); |
1178 | this->screen = NULL; |
1179 | } |
1180 | } |
1181 | |
1182 | /* Set the update rectangle function */ |
1183 | this->UpdateRects = FB_DirectUpdate; |
1184 | |
1185 | /* We're done */ |
1186 | return(current); |
1187 | } |
1188 | |
1189 | #ifdef FBCON_DEBUG |
1190 | void FB_DumpHWSurfaces(_THIS) |
1191 | { |
1192 | vidmem_bucket *bucket; |
1193 | |
1194 | printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); |
1195 | printf("\n"); |
1196 | printf(" Base Size\n"); |
1197 | for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
1198 | printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); |
1199 | if ( bucket->prev ) { |
1200 | if ( bucket->base != bucket->prev->base+bucket->prev->size ) { |
1201 | printf("Warning, corrupt bucket list! (prev)\n"); |
1202 | } |
1203 | } else { |
1204 | if ( bucket != &surfaces ) { |
1205 | printf("Warning, corrupt bucket list! (!prev)\n"); |
1206 | } |
1207 | } |
1208 | if ( bucket->next ) { |
1209 | if ( bucket->next->base != bucket->base+bucket->size ) { |
1210 | printf("Warning, corrupt bucket list! (next)\n"); |
1211 | } |
1212 | } |
1213 | } |
1214 | printf("\n"); |
1215 | } |
1216 | #endif |
1217 | |
1218 | static int FB_InitHWSurfaces(_THIS, SDL_Surface *screen, char *base, int size) |
1219 | { |
1220 | vidmem_bucket *bucket; |
1221 | |
1222 | surfaces_memtotal = size; |
1223 | surfaces_memleft = size; |
1224 | |
1225 | if ( surfaces_memleft > 0 ) { |
1226 | bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
1227 | if ( bucket == NULL ) { |
1228 | SDL_OutOfMemory(); |
1229 | return(-1); |
1230 | } |
1231 | bucket->prev = &surfaces; |
1232 | bucket->used = 0; |
1233 | bucket->dirty = 0; |
1234 | bucket->base = base; |
1235 | bucket->size = size; |
1236 | bucket->next = NULL; |
1237 | } else { |
1238 | bucket = NULL; |
1239 | } |
1240 | |
1241 | surfaces.prev = NULL; |
1242 | surfaces.used = 1; |
1243 | surfaces.dirty = 0; |
1244 | surfaces.base = screen->pixels; |
1245 | surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
1246 | surfaces.next = bucket; |
1247 | screen->hwdata = (struct private_hwdata *)&surfaces; |
1248 | return(0); |
1249 | } |
1250 | static void FB_FreeHWSurfaces(_THIS) |
1251 | { |
1252 | vidmem_bucket *bucket, *freeable; |
1253 | |
1254 | bucket = surfaces.next; |
1255 | while ( bucket ) { |
1256 | freeable = bucket; |
1257 | bucket = bucket->next; |
1258 | SDL_free(freeable); |
1259 | } |
1260 | surfaces.next = NULL; |
1261 | } |
1262 | |
1263 | static int FB_AllocHWSurface(_THIS, SDL_Surface *surface) |
1264 | { |
1265 | vidmem_bucket *bucket; |
1266 | int size; |
1267 | int extra; |
1268 | |
1269 | /* Temporarily, we only allow surfaces the same width as display. |
1270 | Some blitters require the pitch between two hardware surfaces |
1271 | to be the same. Others have interesting alignment restrictions. |
1272 | Until someone who knows these details looks at the code... |
1273 | */ |
1274 | if ( surface->pitch > SDL_VideoSurface->pitch ) { |
1275 | SDL_SetError("Surface requested wider than screen"); |
1276 | return(-1); |
1277 | } |
1278 | surface->pitch = SDL_VideoSurface->pitch; |
1279 | size = surface->h * surface->pitch; |
1280 | #ifdef FBCON_DEBUG |
1281 | fprintf(stderr, "Allocating bucket of %d bytes\n", size); |
1282 | #endif |
1283 | |
1284 | /* Quick check for available mem */ |
1285 | if ( size > surfaces_memleft ) { |
1286 | SDL_SetError("Not enough video memory"); |
1287 | return(-1); |
1288 | } |
1289 | |
1290 | /* Search for an empty bucket big enough */ |
1291 | for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
1292 | if ( ! bucket->used && (size <= bucket->size) ) { |
1293 | break; |
1294 | } |
1295 | } |
1296 | if ( bucket == NULL ) { |
1297 | SDL_SetError("Video memory too fragmented"); |
1298 | return(-1); |
1299 | } |
1300 | |
1301 | /* Create a new bucket for left-over memory */ |
1302 | extra = (bucket->size - size); |
1303 | if ( extra ) { |
1304 | vidmem_bucket *newbucket; |
1305 | |
1306 | #ifdef FBCON_DEBUG |
1307 | fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); |
1308 | #endif |
1309 | newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
1310 | if ( newbucket == NULL ) { |
1311 | SDL_OutOfMemory(); |
1312 | return(-1); |
1313 | } |
1314 | newbucket->prev = bucket; |
1315 | newbucket->used = 0; |
1316 | newbucket->base = bucket->base+size; |
1317 | newbucket->size = extra; |
1318 | newbucket->next = bucket->next; |
1319 | if ( bucket->next ) { |
1320 | bucket->next->prev = newbucket; |
1321 | } |
1322 | bucket->next = newbucket; |
1323 | } |
1324 | |
1325 | /* Set the current bucket values and return it! */ |
1326 | bucket->used = 1; |
1327 | bucket->size = size; |
1328 | bucket->dirty = 0; |
1329 | #ifdef FBCON_DEBUG |
1330 | fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); |
1331 | #endif |
1332 | surfaces_memleft -= size; |
1333 | surface->flags |= SDL_HWSURFACE; |
1334 | surface->pixels = bucket->base; |
1335 | surface->hwdata = (struct private_hwdata *)bucket; |
1336 | return(0); |
1337 | } |
1338 | static void FB_FreeHWSurface(_THIS, SDL_Surface *surface) |
1339 | { |
1340 | vidmem_bucket *bucket, *freeable; |
1341 | |
1342 | /* Look for the bucket in the current list */ |
1343 | for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
1344 | if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
1345 | break; |
1346 | } |
1347 | } |
1348 | if ( bucket && bucket->used ) { |
1349 | /* Add the memory back to the total */ |
1350 | #ifdef DGA_DEBUG |
1351 | printf("Freeing bucket of %d bytes\n", bucket->size); |
1352 | #endif |
1353 | surfaces_memleft += bucket->size; |
1354 | |
1355 | /* Can we merge the space with surrounding buckets? */ |
1356 | bucket->used = 0; |
1357 | if ( bucket->next && ! bucket->next->used ) { |
1358 | #ifdef DGA_DEBUG |
1359 | printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); |
1360 | #endif |
1361 | freeable = bucket->next; |
1362 | bucket->size += bucket->next->size; |
1363 | bucket->next = bucket->next->next; |
1364 | if ( bucket->next ) { |
1365 | bucket->next->prev = bucket; |
1366 | } |
1367 | SDL_free(freeable); |
1368 | } |
1369 | if ( bucket->prev && ! bucket->prev->used ) { |
1370 | #ifdef DGA_DEBUG |
1371 | printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); |
1372 | #endif |
1373 | freeable = bucket; |
1374 | bucket->prev->size += bucket->size; |
1375 | bucket->prev->next = bucket->next; |
1376 | if ( bucket->next ) { |
1377 | bucket->next->prev = bucket->prev; |
1378 | } |
1379 | SDL_free(freeable); |
1380 | } |
1381 | } |
1382 | surface->pixels = NULL; |
1383 | surface->hwdata = NULL; |
1384 | } |
1385 | |
1386 | static int FB_LockHWSurface(_THIS, SDL_Surface *surface) |
1387 | { |
1388 | if ( switched_away ) { |
1389 | return -2; /* no hardware access */ |
1390 | } |
1391 | if ( surface == this->screen ) { |
1392 | SDL_mutexP(hw_lock); |
1393 | if ( FB_IsSurfaceBusy(surface) ) { |
1394 | FB_WaitBusySurfaces(this); |
1395 | } |
1396 | } else { |
1397 | if ( FB_IsSurfaceBusy(surface) ) { |
1398 | FB_WaitBusySurfaces(this); |
1399 | } |
1400 | } |
1401 | return(0); |
1402 | } |
1403 | static void FB_UnlockHWSurface(_THIS, SDL_Surface *surface) |
1404 | { |
1405 | if ( surface == this->screen ) { |
1406 | SDL_mutexV(hw_lock); |
1407 | } |
1408 | } |
1409 | |
1410 | static void FB_WaitVBL(_THIS) |
1411 | { |
1412 | #ifdef FBIOWAITRETRACE /* Heheh, this didn't make it into the main kernel */ |
1413 | ioctl(console_fd, FBIOWAITRETRACE, 0); |
1414 | #endif |
1415 | return; |
1416 | } |
1417 | |
1418 | static void FB_WaitIdle(_THIS) |
1419 | { |
1420 | return; |
1421 | } |
1422 | |
1423 | static int FB_FlipHWSurface(_THIS, SDL_Surface *surface) |
1424 | { |
1425 | if ( switched_away ) { |
1426 | return -2; /* no hardware access */ |
1427 | } |
1428 | |
1429 | /* Wait for vertical retrace and then flip display */ |
1430 | cache_vinfo.yoffset = flip_page*surface->h; |
1431 | if ( FB_IsSurfaceBusy(this->screen) ) { |
1432 | FB_WaitBusySurfaces(this); |
1433 | } |
1434 | wait_vbl(this); |
1435 | if ( ioctl(console_fd, FBIOPAN_DISPLAY, &cache_vinfo) < 0 ) { |
1436 | SDL_SetError("ioctl(FBIOPAN_DISPLAY) failed"); |
1437 | return(-1); |
1438 | } |
1439 | flip_page = !flip_page; |
1440 | |
1441 | surface->pixels = flip_address[flip_page]; |
1442 | return(0); |
1443 | } |
1444 | |
1445 | static void FB_blit16(Uint8 *byte_src_pos, int src_right_delta, int src_down_delta, |
1446 | Uint8 *byte_dst_pos, int dst_linebytes, int width, int height) |
1447 | { |
1448 | int w; |
1449 | Uint16 *src_pos = (Uint16 *)byte_src_pos; |
1450 | Uint16 *dst_pos = (Uint16 *)byte_dst_pos; |
1451 | |
1452 | while (height) { |
1453 | Uint16 *src = src_pos; |
1454 | Uint16 *dst = dst_pos; |
1455 | for (w = width; w != 0; w--) { |
1456 | *dst = *src; |
1457 | src += src_right_delta; |
1458 | dst++; |
1459 | } |
1460 | dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes); |
1461 | src_pos += src_down_delta; |
1462 | height--; |
1463 | } |
1464 | } |
1465 | |
1466 | #define BLOCKSIZE_W 32 |
1467 | #define BLOCKSIZE_H 32 |
1468 | |
1469 | static void FB_blit16blocked(Uint8 *byte_src_pos, int src_right_delta, int src_down_delta, |
1470 | Uint8 *byte_dst_pos, int dst_linebytes, int width, int height) |
1471 | { |
1472 | int w; |
1473 | Uint16 *src_pos = (Uint16 *)byte_src_pos; |
1474 | Uint16 *dst_pos = (Uint16 *)byte_dst_pos; |
1475 | |
1476 | while (height > 0) { |
1477 | Uint16 *src = src_pos; |
1478 | Uint16 *dst = dst_pos; |
1479 | for (w = width; w > 0; w -= BLOCKSIZE_W) { |
1480 | FB_blit16((Uint8 *)src, |
1481 | src_right_delta, |
1482 | src_down_delta, |
1483 | (Uint8 *)dst, |
1484 | dst_linebytes, |
1485 | min(w, BLOCKSIZE_W), |
1486 | min(height, BLOCKSIZE_H)); |
1487 | src += src_right_delta * BLOCKSIZE_W; |
1488 | dst += BLOCKSIZE_W; |
1489 | } |
1490 | dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes * BLOCKSIZE_H); |
1491 | src_pos += src_down_delta * BLOCKSIZE_H; |
1492 | height -= BLOCKSIZE_H; |
1493 | } |
1494 | } |
1495 | |
1496 | static void FB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
1497 | { |
1498 | int width = cache_vinfo.xres; |
1499 | int height = cache_vinfo.yres; |
1500 | int bytes_per_pixel = (cache_vinfo.bits_per_pixel + 7) / 8; |
1501 | int i; |
1502 | |
1503 | if (!shadow_fb) { |
1504 | /* The application is already updating the visible video memory */ |
1505 | return; |
1506 | } |
1507 | |
1508 | if (cache_vinfo.bits_per_pixel != 16) { |
1509 | SDL_SetError("Shadow copy only implemented for 16 bpp"); |
1510 | return; |
1511 | } |
1512 | |
1513 | for (i = 0; i < numrects; i++) { |
1514 | int x1, y1, x2, y2; |
1515 | int scr_x1, scr_y1, scr_x2, scr_y2; |
1516 | int sha_x1, sha_y1; |
1517 | int shadow_right_delta; /* Address change when moving right in dest */ |
1518 | int shadow_down_delta; /* Address change when moving down in dest */ |
1519 | char *src_start; |
1520 | char *dst_start; |
1521 | |
1522 | x1 = rects[i].x; |
1523 | y1 = rects[i].y; |
1524 | x2 = x1 + rects[i].w; |
1525 | y2 = y1 + rects[i].h; |
1526 | |
1527 | if (x1 < 0) { |
1528 | x1 = 0; |
1529 | } else if (x1 > width) { |
1530 | x1 = width; |
1531 | } |
1532 | if (x2 < 0) { |
1533 | x2 = 0; |
1534 | } else if (x2 > width) { |
1535 | x2 = width; |
1536 | } |
1537 | if (y1 < 0) { |
1538 | y1 = 0; |
1539 | } else if (y1 > height) { |
1540 | y1 = height; |
1541 | } |
1542 | if (y2 < 0) { |
1543 | y2 = 0; |
1544 | } else if (y2 > height) { |
1545 | y2 = height; |
1546 | } |
1547 | if (x2 <= x1 || y2 <= y1) { |
1548 | continue; |
1549 | } |
1550 | |
1551 | switch (rotate) { |
1552 | case FBCON_ROTATE_NONE: |
1553 | sha_x1 = scr_x1 = x1; |
1554 | sha_y1 = scr_y1 = y1; |
1555 | scr_x2 = x2; |
1556 | scr_y2 = y2; |
1557 | shadow_right_delta = 1; |
1558 | shadow_down_delta = width; |
1559 | break; |
1560 | case FBCON_ROTATE_CCW: |
1561 | scr_x1 = y1; |
1562 | scr_y1 = width - x2; |
1563 | scr_x2 = y2; |
1564 | scr_y2 = width - x1; |
1565 | sha_x1 = x2 - 1; |
1566 | sha_y1 = y1; |
1567 | shadow_right_delta = width; |
1568 | shadow_down_delta = -1; |
1569 | break; |
1570 | case FBCON_ROTATE_UD: |
1571 | scr_x1 = width - x2; |
1572 | scr_y1 = height - y2; |
1573 | scr_x2 = width - x1; |
1574 | scr_y2 = height - y1; |
1575 | sha_x1 = x2 - 1; |
1576 | sha_y1 = y2 - 1; |
1577 | shadow_right_delta = -1; |
1578 | shadow_down_delta = -width; |
1579 | break; |
1580 | case FBCON_ROTATE_CW: |
1581 | scr_x1 = height - y2; |
1582 | scr_y1 = x1; |
1583 | scr_x2 = height - y1; |
1584 | scr_y2 = x2; |
1585 | sha_x1 = x1; |
1586 | sha_y1 = y2 - 1; |
1587 | shadow_right_delta = -width; |
1588 | shadow_down_delta = 1; |
1589 | break; |
1590 | default: |
1591 | SDL_SetError("Unknown rotation"); |
1592 | return; |
1593 | } |
1594 | |
1595 | src_start = shadow_mem + |
1596 | (sha_y1 * width + sha_x1) * bytes_per_pixel; |
1597 | dst_start = mapped_mem + mapped_offset + scr_y1 * physlinebytes + |
1598 | scr_x1 * bytes_per_pixel; |
1599 | |
1600 | blitFunc((Uint8 *) src_start, |
1601 | shadow_right_delta, |
1602 | shadow_down_delta, |
1603 | (Uint8 *) dst_start, |
1604 | physlinebytes, |
1605 | scr_x2 - scr_x1, |
1606 | scr_y2 - scr_y1); |
1607 | } |
1608 | } |
1609 | |
1610 | #ifdef VGA16_FBCON_SUPPORT |
1611 | /* Code adapted with thanks from the XFree86 VGA16 driver! :) */ |
1612 | #define writeGr(index, value) \ |
1613 | outb(index, 0x3CE); \ |
1614 | outb(value, 0x3CF); |
1615 | #define writeSeq(index, value) \ |
1616 | outb(index, 0x3C4); \ |
1617 | outb(value, 0x3C5); |
1618 | |
1619 | static void FB_VGA16Update(_THIS, int numrects, SDL_Rect *rects) |
1620 | { |
1621 | SDL_Surface *screen; |
1622 | int width, height, FBPitch, left, i, j, SRCPitch, phase; |
1623 | register Uint32 m; |
1624 | Uint8 s1, s2, s3, s4; |
1625 | Uint32 *src, *srcPtr; |
1626 | Uint8 *dst, *dstPtr; |
1627 | |
1628 | if ( switched_away ) { |
1629 | return; /* no hardware access */ |
1630 | } |
1631 | |
1632 | screen = this->screen; |
1633 | FBPitch = screen->w >> 3; |
1634 | SRCPitch = screen->pitch >> 2; |
1635 | |
1636 | writeGr(0x03, 0x00); |
1637 | writeGr(0x05, 0x00); |
1638 | writeGr(0x01, 0x00); |
1639 | writeGr(0x08, 0xFF); |
1640 | |
1641 | while(numrects--) { |
1642 | left = rects->x & ~7; |
1643 | width = (rects->w + 7) >> 3; |
1644 | height = rects->h; |
1645 | src = (Uint32*)screen->pixels + (rects->y * SRCPitch) + (left >> 2); |
1646 | dst = (Uint8*)mapped_mem + (rects->y * FBPitch) + (left >> 3); |
1647 | |
1648 | if((phase = (long)dst & 3L)) { |
1649 | phase = 4 - phase; |
1650 | if(phase > width) phase = width; |
1651 | width -= phase; |
1652 | } |
1653 | |
1654 | while(height--) { |
1655 | writeSeq(0x02, 1 << 0); |
1656 | dstPtr = dst; |
1657 | srcPtr = src; |
1658 | i = width; |
1659 | j = phase; |
1660 | while(j--) { |
1661 | m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
1662 | *dstPtr++ = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1663 | srcPtr += 2; |
1664 | } |
1665 | while(i >= 4) { |
1666 | m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
1667 | s1 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1668 | m = (srcPtr[3] & 0x01010101) | ((srcPtr[2] & 0x01010101) << 4); |
1669 | s2 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1670 | m = (srcPtr[5] & 0x01010101) | ((srcPtr[4] & 0x01010101) << 4); |
1671 | s3 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1672 | m = (srcPtr[7] & 0x01010101) | ((srcPtr[6] & 0x01010101) << 4); |
1673 | s4 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1674 | *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
1675 | srcPtr += 8; |
1676 | dstPtr += 4; |
1677 | i -= 4; |
1678 | } |
1679 | while(i--) { |
1680 | m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
1681 | *dstPtr++ = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
1682 | srcPtr += 2; |
1683 | } |
1684 | |
1685 | writeSeq(0x02, 1 << 1); |
1686 | dstPtr = dst; |
1687 | srcPtr = src; |
1688 | i = width; |
1689 | j = phase; |
1690 | while(j--) { |
1691 | m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
1692 | *dstPtr++ = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1693 | srcPtr += 2; |
1694 | } |
1695 | while(i >= 4) { |
1696 | m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
1697 | s1 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1698 | m = (srcPtr[3] & 0x02020202) | ((srcPtr[2] & 0x02020202) << 4); |
1699 | s2 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1700 | m = (srcPtr[5] & 0x02020202) | ((srcPtr[4] & 0x02020202) << 4); |
1701 | s3 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1702 | m = (srcPtr[7] & 0x02020202) | ((srcPtr[6] & 0x02020202) << 4); |
1703 | s4 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1704 | *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
1705 | srcPtr += 8; |
1706 | dstPtr += 4; |
1707 | i -= 4; |
1708 | } |
1709 | while(i--) { |
1710 | m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
1711 | *dstPtr++ = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
1712 | srcPtr += 2; |
1713 | } |
1714 | |
1715 | writeSeq(0x02, 1 << 2); |
1716 | dstPtr = dst; |
1717 | srcPtr = src; |
1718 | i = width; |
1719 | j = phase; |
1720 | while(j--) { |
1721 | m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
1722 | *dstPtr++ = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1723 | srcPtr += 2; |
1724 | } |
1725 | while(i >= 4) { |
1726 | m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
1727 | s1 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1728 | m = (srcPtr[3] & 0x04040404) | ((srcPtr[2] & 0x04040404) << 4); |
1729 | s2 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1730 | m = (srcPtr[5] & 0x04040404) | ((srcPtr[4] & 0x04040404) << 4); |
1731 | s3 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1732 | m = (srcPtr[7] & 0x04040404) | ((srcPtr[6] & 0x04040404) << 4); |
1733 | s4 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1734 | *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
1735 | srcPtr += 8; |
1736 | dstPtr += 4; |
1737 | i -= 4; |
1738 | } |
1739 | while(i--) { |
1740 | m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
1741 | *dstPtr++ = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
1742 | srcPtr += 2; |
1743 | } |
1744 | |
1745 | writeSeq(0x02, 1 << 3); |
1746 | dstPtr = dst; |
1747 | srcPtr = src; |
1748 | i = width; |
1749 | j = phase; |
1750 | while(j--) { |
1751 | m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
1752 | *dstPtr++ = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1753 | srcPtr += 2; |
1754 | } |
1755 | while(i >= 4) { |
1756 | m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
1757 | s1 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1758 | m = (srcPtr[3] & 0x08080808) | ((srcPtr[2] & 0x08080808) << 4); |
1759 | s2 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1760 | m = (srcPtr[5] & 0x08080808) | ((srcPtr[4] & 0x08080808) << 4); |
1761 | s3 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1762 | m = (srcPtr[7] & 0x08080808) | ((srcPtr[6] & 0x08080808) << 4); |
1763 | s4 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1764 | *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
1765 | srcPtr += 8; |
1766 | dstPtr += 4; |
1767 | i -= 4; |
1768 | } |
1769 | while(i--) { |
1770 | m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
1771 | *dstPtr++ = (m >> 27) | (m >> 18) | (m >> 9) | m; |
1772 | srcPtr += 2; |
1773 | } |
1774 | |
1775 | dst += FBPitch; |
1776 | src += SRCPitch; |
1777 | } |
1778 | rects++; |
1779 | } |
1780 | } |
1781 | #endif /* VGA16_FBCON_SUPPORT */ |
1782 | |
1783 | void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area) |
1784 | { |
1785 | struct fb_cmap cmap; |
1786 | |
1787 | cmap.start = 0; |
1788 | cmap.len = palette_len; |
1789 | cmap.red = &area[0*palette_len]; |
1790 | cmap.green = &area[1*palette_len]; |
1791 | cmap.blue = &area[2*palette_len]; |
1792 | cmap.transp = NULL; |
1793 | ioctl(console_fd, FBIOGETCMAP, &cmap); |
1794 | } |
1795 | |
1796 | void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area) |
1797 | { |
1798 | struct fb_cmap cmap; |
1799 | |
1800 | cmap.start = 0; |
1801 | cmap.len = palette_len; |
1802 | cmap.red = &area[0*palette_len]; |
1803 | cmap.green = &area[1*palette_len]; |
1804 | cmap.blue = &area[2*palette_len]; |
1805 | cmap.transp = NULL; |
1806 | ioctl(console_fd, FBIOPUTCMAP, &cmap); |
1807 | } |
1808 | |
1809 | static void FB_SavePalette(_THIS, struct fb_fix_screeninfo *finfo, |
1810 | struct fb_var_screeninfo *vinfo) |
1811 | { |
1812 | int i; |
1813 | |
1814 | /* Save hardware palette, if needed */ |
1815 | if ( finfo->visual == FB_VISUAL_PSEUDOCOLOR ) { |
1816 | saved_cmaplen = 1<<vinfo->bits_per_pixel; |
1817 | saved_cmap=(__u16 *)SDL_malloc(3*saved_cmaplen*sizeof(*saved_cmap)); |
1818 | if ( saved_cmap != NULL ) { |
1819 | FB_SavePaletteTo(this, saved_cmaplen, saved_cmap); |
1820 | } |
1821 | } |
1822 | |
1823 | /* Added support for FB_VISUAL_DIRECTCOLOR. |
1824 | With this mode pixel information is passed through the palette... |
1825 | Neat fading and gamma correction effects can be had by simply |
1826 | fooling around with the palette instead of changing the pixel |
1827 | values themselves... Very neat! |
1828 | |
1829 | Adam Meyerowitz 1/19/2000 |
1830 | ameyerow@optonline.com |
1831 | */ |
1832 | if ( finfo->visual == FB_VISUAL_DIRECTCOLOR ) { |
1833 | __u16 new_entries[3*256]; |
1834 | |
1835 | /* Save the colormap */ |
1836 | saved_cmaplen = 256; |
1837 | saved_cmap=(__u16 *)SDL_malloc(3*saved_cmaplen*sizeof(*saved_cmap)); |
1838 | if ( saved_cmap != NULL ) { |
1839 | FB_SavePaletteTo(this, saved_cmaplen, saved_cmap); |
1840 | } |
1841 | |
1842 | /* Allocate new identity colormap */ |
1843 | for ( i=0; i<256; ++i ) { |
1844 | new_entries[(0*256)+i] = |
1845 | new_entries[(1*256)+i] = |
1846 | new_entries[(2*256)+i] = (i<<8)|i; |
1847 | } |
1848 | FB_RestorePaletteFrom(this, 256, new_entries); |
1849 | } |
1850 | } |
1851 | |
1852 | static void FB_RestorePalette(_THIS) |
1853 | { |
1854 | /* Restore the original palette */ |
1855 | if ( saved_cmap ) { |
1856 | FB_RestorePaletteFrom(this, saved_cmaplen, saved_cmap); |
1857 | SDL_free(saved_cmap); |
1858 | saved_cmap = NULL; |
1859 | } |
1860 | } |
1861 | |
1862 | static int FB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
1863 | { |
1864 | int i; |
1865 | __u16 r[256]; |
1866 | __u16 g[256]; |
1867 | __u16 b[256]; |
1868 | struct fb_cmap cmap; |
1869 | |
1870 | /* Set up the colormap */ |
1871 | for (i = 0; i < ncolors; i++) { |
1872 | r[i] = colors[i].r << 8; |
1873 | g[i] = colors[i].g << 8; |
1874 | b[i] = colors[i].b << 8; |
1875 | } |
1876 | cmap.start = firstcolor; |
1877 | cmap.len = ncolors; |
1878 | cmap.red = r; |
1879 | cmap.green = g; |
1880 | cmap.blue = b; |
1881 | cmap.transp = NULL; |
1882 | |
1883 | if( (ioctl(console_fd, FBIOPUTCMAP, &cmap) < 0) || |
1884 | !(this->screen->flags & SDL_HWPALETTE) ) { |
1885 | colors = this->screen->format->palette->colors; |
1886 | ncolors = this->screen->format->palette->ncolors; |
1887 | cmap.start = 0; |
1888 | cmap.len = ncolors; |
1889 | SDL_memset(r, 0, sizeof(r)); |
1890 | SDL_memset(g, 0, sizeof(g)); |
1891 | SDL_memset(b, 0, sizeof(b)); |
1892 | if ( ioctl(console_fd, FBIOGETCMAP, &cmap) == 0 ) { |
1893 | for ( i=ncolors-1; i>=0; --i ) { |
1894 | colors[i].r = (r[i]>>8); |
1895 | colors[i].g = (g[i]>>8); |
1896 | colors[i].b = (b[i]>>8); |
1897 | } |
1898 | } |
1899 | return(0); |
1900 | } |
1901 | return(1); |
1902 | } |
1903 | |
1904 | /* Note: If we are terminated, this could be called in the middle of |
1905 | another SDL video routine -- notably UpdateRects. |
1906 | */ |
1907 | static void FB_VideoQuit(_THIS) |
1908 | { |
1909 | int i, j; |
1910 | |
1911 | if ( this->screen ) { |
1912 | /* Clear screen and tell SDL not to free the pixels */ |
1913 | if ( this->screen->pixels && FB_InGraphicsMode(this) ) { |
1914 | #if defined(__powerpc__) || defined(__ia64__) /* SIGBUS when using SDL_memset() ?? */ |
1915 | Uint8 *rowp = (Uint8 *)this->screen->pixels; |
1916 | int left = this->screen->pitch*this->screen->h; |
1917 | while ( left-- ) { *rowp++ = 0; } |
1918 | #else |
1919 | SDL_memset(this->screen->pixels,0,this->screen->h*this->screen->pitch); |
1920 | #endif |
1921 | } |
1922 | /* This test fails when using the VGA16 shadow memory */ |
1923 | if ( ((char *)this->screen->pixels >= mapped_mem) && |
1924 | ((char *)this->screen->pixels < (mapped_mem+mapped_memlen)) ) { |
1925 | this->screen->pixels = NULL; |
1926 | } |
1927 | } |
1928 | |
1929 | /* Clear the lock mutex */ |
1930 | if ( hw_lock ) { |
1931 | SDL_DestroyMutex(hw_lock); |
1932 | hw_lock = NULL; |
1933 | } |
1934 | |
1935 | /* Clean up defined video modes */ |
1936 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
1937 | if ( SDL_modelist[i] != NULL ) { |
1938 | for ( j=0; SDL_modelist[i][j]; ++j ) { |
1939 | SDL_free(SDL_modelist[i][j]); |
1940 | } |
1941 | SDL_free(SDL_modelist[i]); |
1942 | SDL_modelist[i] = NULL; |
1943 | } |
1944 | } |
1945 | |
1946 | /* Clean up the memory bucket list */ |
1947 | FB_FreeHWSurfaces(this); |
1948 | |
1949 | /* Close console and input file descriptors */ |
1950 | if ( console_fd > 0 ) { |
1951 | /* Unmap the video framebuffer and I/O registers */ |
1952 | if ( mapped_mem ) { |
1953 | munmap(mapped_mem, mapped_memlen); |
1954 | mapped_mem = NULL; |
1955 | } |
1956 | if ( mapped_io ) { |
1957 | munmap(mapped_io, mapped_iolen); |
1958 | mapped_io = NULL; |
1959 | } |
1960 | |
1961 | /* Restore the original video mode and palette */ |
1962 | if ( FB_InGraphicsMode(this) ) { |
1963 | FB_RestorePalette(this); |
1964 | ioctl(console_fd, FBIOPUT_VSCREENINFO, &saved_vinfo); |
1965 | } |
1966 | |
1967 | /* We're all done with the framebuffer */ |
1968 | close(console_fd); |
1969 | console_fd = -1; |
1970 | } |
1971 | FB_CloseMouse(this); |
1972 | FB_CloseKeyboard(this); |
1973 | } |