e14743d1 |
1 | /* $XFree86: xc/lib/Xxf86dga/XF86DGA.c,v 3.19 2001/08/18 02:41:30 dawes Exp $ */ |
2 | /* |
3 | |
4 | Copyright (c) 1995 Jon Tombs |
5 | Copyright (c) 1995,1996 The XFree86 Project, Inc |
6 | |
7 | */ |
8 | |
9 | /* THIS IS NOT AN X CONSORTIUM STANDARD */ |
10 | |
11 | #ifdef __EMX__ /* needed here to override certain constants in X headers */ |
12 | #define INCL_DOS |
13 | #define INCL_DOSIOCTL |
14 | #include <os2.h> |
15 | #endif |
16 | |
17 | #if defined(linux) |
18 | #define HAS_MMAP_ANON |
19 | #include <sys/types.h> |
20 | #include <sys/mman.h> |
21 | /*#include <asm/page.h>*/ /* PAGE_SIZE */ |
22 | #define HAS_SC_PAGESIZE /* _SC_PAGESIZE may be an enum for Linux */ |
23 | #define HAS_GETPAGESIZE |
24 | #endif /* linux */ |
25 | |
26 | #if defined(CSRG_BASED) |
27 | #define HAS_MMAP_ANON |
28 | #define HAS_GETPAGESIZE |
29 | #include <sys/types.h> |
30 | #include <sys/mman.h> |
31 | #endif /* CSRG_BASED */ |
32 | |
33 | #if defined(DGUX) |
34 | #define HAS_GETPAGESIZE |
35 | #define MMAP_DEV_ZERO |
36 | #include <sys/types.h> |
37 | #include <sys/mman.h> |
38 | #include <unistd.h> |
39 | #endif /* DGUX */ |
40 | |
41 | #if defined(SVR4) && !defined(DGUX) |
42 | #define MMAP_DEV_ZERO |
43 | #include <sys/types.h> |
44 | #include <sys/mman.h> |
45 | #include <unistd.h> |
46 | #endif /* SVR4 && !DGUX */ |
47 | |
48 | #if defined(sun) && !defined(SVR4) /* SunOS */ |
49 | #define MMAP_DEV_ZERO /* doesn't SunOS have MAP_ANON ?? */ |
50 | #define HAS_GETPAGESIZE |
51 | #include <sys/types.h> |
52 | #include <sys/mman.h> |
53 | #endif /* sun && !SVR4 */ |
54 | |
55 | #ifdef XNO_SYSCONF |
56 | #undef _SC_PAGESIZE |
57 | #endif |
58 | |
59 | #define NEED_EVENTS |
60 | #define NEED_REPLIES |
61 | |
62 | /* Apparently some X11 systems can't include this multiple times... */ |
63 | #ifndef SDL_INCLUDED_XLIBINT_H |
64 | #define SDL_INCLUDED_XLIBINT_H 1 |
65 | #include <X11/Xlibint.h> |
66 | #endif |
67 | |
68 | #include "../extensions/xf86dga.h" |
69 | #include "../extensions/xf86dgastr.h" |
70 | #include "../extensions/Xext.h" |
71 | #include "../extensions/extutil.h" |
72 | |
73 | extern XExtDisplayInfo* SDL_NAME(xdga_find_display)(Display*); |
74 | extern char *SDL_NAME(xdga_extension_name); |
75 | |
76 | #define XF86DGACheckExtension(dpy,i,val) \ |
77 | XextCheckExtension (dpy, i, SDL_NAME(xdga_extension_name), val) |
78 | |
79 | /***************************************************************************** |
80 | * * |
81 | * public XFree86-DGA Extension routines * |
82 | * * |
83 | *****************************************************************************/ |
84 | |
85 | Bool SDL_NAME(XF86DGAQueryExtension) ( |
86 | Display *dpy, |
87 | int *event_basep, |
88 | int *error_basep |
89 | ){ |
90 | return SDL_NAME(XDGAQueryExtension)(dpy, event_basep, error_basep); |
91 | } |
92 | |
93 | Bool SDL_NAME(XF86DGAQueryVersion)( |
94 | Display* dpy, |
95 | int* majorVersion, |
96 | int* minorVersion |
97 | ){ |
98 | return SDL_NAME(XDGAQueryVersion)(dpy, majorVersion, minorVersion); |
99 | } |
100 | |
101 | Bool SDL_NAME(XF86DGAGetVideoLL)( |
102 | Display* dpy, |
103 | int screen, |
104 | int *offset, |
105 | int *width, |
106 | int *bank_size, |
107 | int *ram_size |
108 | ){ |
109 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
110 | xXF86DGAGetVideoLLReply rep; |
111 | xXF86DGAGetVideoLLReq *req; |
112 | |
113 | XF86DGACheckExtension (dpy, info, False); |
114 | |
115 | LockDisplay(dpy); |
116 | GetReq(XF86DGAGetVideoLL, req); |
117 | req->reqType = info->codes->major_opcode; |
118 | req->dgaReqType = X_XF86DGAGetVideoLL; |
119 | req->screen = screen; |
120 | if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { |
121 | UnlockDisplay(dpy); |
122 | SyncHandle(); |
123 | return False; |
124 | } |
125 | |
126 | *offset = /*(char *)*/rep.offset; |
127 | *width = rep.width; |
128 | *bank_size = rep.bank_size; |
129 | *ram_size = rep.ram_size; |
130 | |
131 | UnlockDisplay(dpy); |
132 | SyncHandle(); |
133 | return True; |
134 | } |
135 | |
136 | |
137 | Bool SDL_NAME(XF86DGADirectVideoLL)( |
138 | Display* dpy, |
139 | int screen, |
140 | int enable |
141 | ){ |
142 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
143 | xXF86DGADirectVideoReq *req; |
144 | |
145 | XF86DGACheckExtension (dpy, info, False); |
146 | |
147 | LockDisplay(dpy); |
148 | GetReq(XF86DGADirectVideo, req); |
149 | req->reqType = info->codes->major_opcode; |
150 | req->dgaReqType = X_XF86DGADirectVideo; |
151 | req->screen = screen; |
152 | req->enable = enable; |
153 | UnlockDisplay(dpy); |
154 | SyncHandle(); |
155 | XSync(dpy,False); |
156 | return True; |
157 | } |
158 | |
159 | Bool SDL_NAME(XF86DGAGetViewPortSize)( |
160 | Display* dpy, |
161 | int screen, |
162 | int *width, |
163 | int *height |
164 | ){ |
165 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
166 | xXF86DGAGetViewPortSizeReply rep; |
167 | xXF86DGAGetViewPortSizeReq *req; |
168 | |
169 | XF86DGACheckExtension (dpy, info, False); |
170 | |
171 | LockDisplay(dpy); |
172 | GetReq(XF86DGAGetViewPortSize, req); |
173 | req->reqType = info->codes->major_opcode; |
174 | req->dgaReqType = X_XF86DGAGetViewPortSize; |
175 | req->screen = screen; |
176 | if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { |
177 | UnlockDisplay(dpy); |
178 | SyncHandle(); |
179 | return False; |
180 | } |
181 | |
182 | *width = rep.width; |
183 | *height = rep.height; |
184 | |
185 | UnlockDisplay(dpy); |
186 | SyncHandle(); |
187 | return True; |
188 | } |
189 | |
190 | |
191 | Bool SDL_NAME(XF86DGASetViewPort)( |
192 | Display* dpy, |
193 | int screen, |
194 | int x, |
195 | int y |
196 | ){ |
197 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
198 | xXF86DGASetViewPortReq *req; |
199 | |
200 | XF86DGACheckExtension (dpy, info, False); |
201 | |
202 | LockDisplay(dpy); |
203 | GetReq(XF86DGASetViewPort, req); |
204 | req->reqType = info->codes->major_opcode; |
205 | req->dgaReqType = X_XF86DGASetViewPort; |
206 | req->screen = screen; |
207 | req->x = x; |
208 | req->y = y; |
209 | UnlockDisplay(dpy); |
210 | SyncHandle(); |
211 | XSync(dpy,False); |
212 | return True; |
213 | } |
214 | |
215 | |
216 | Bool SDL_NAME(XF86DGAGetVidPage)( |
217 | Display* dpy, |
218 | int screen, |
219 | int *vpage |
220 | ){ |
221 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
222 | xXF86DGAGetVidPageReply rep; |
223 | xXF86DGAGetVidPageReq *req; |
224 | |
225 | XF86DGACheckExtension (dpy, info, False); |
226 | |
227 | LockDisplay(dpy); |
228 | GetReq(XF86DGAGetVidPage, req); |
229 | req->reqType = info->codes->major_opcode; |
230 | req->dgaReqType = X_XF86DGAGetVidPage; |
231 | req->screen = screen; |
232 | if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { |
233 | UnlockDisplay(dpy); |
234 | SyncHandle(); |
235 | return False; |
236 | } |
237 | |
238 | *vpage = rep.vpage; |
239 | UnlockDisplay(dpy); |
240 | SyncHandle(); |
241 | return True; |
242 | } |
243 | |
244 | |
245 | Bool SDL_NAME(XF86DGASetVidPage)( |
246 | Display* dpy, |
247 | int screen, |
248 | int vpage |
249 | ){ |
250 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
251 | xXF86DGASetVidPageReq *req; |
252 | |
253 | XF86DGACheckExtension (dpy, info, False); |
254 | |
255 | LockDisplay(dpy); |
256 | GetReq(XF86DGASetVidPage, req); |
257 | req->reqType = info->codes->major_opcode; |
258 | req->dgaReqType = X_XF86DGASetVidPage; |
259 | req->screen = screen; |
260 | req->vpage = vpage; |
261 | UnlockDisplay(dpy); |
262 | SyncHandle(); |
263 | XSync(dpy,False); |
264 | return True; |
265 | } |
266 | |
267 | Bool SDL_NAME(XF86DGAInstallColormap)( |
268 | Display* dpy, |
269 | int screen, |
270 | Colormap cmap |
271 | ){ |
272 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
273 | xXF86DGAInstallColormapReq *req; |
274 | |
275 | XF86DGACheckExtension (dpy, info, False); |
276 | |
277 | LockDisplay(dpy); |
278 | GetReq(XF86DGAInstallColormap, req); |
279 | req->reqType = info->codes->major_opcode; |
280 | req->dgaReqType = X_XF86DGAInstallColormap; |
281 | req->screen = screen; |
282 | req->id = cmap; |
283 | UnlockDisplay(dpy); |
284 | SyncHandle(); |
285 | XSync(dpy,False); |
286 | return True; |
287 | } |
288 | |
289 | Bool SDL_NAME(XF86DGAQueryDirectVideo)( |
290 | Display *dpy, |
291 | int screen, |
292 | int *flags |
293 | ){ |
294 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
295 | xXF86DGAQueryDirectVideoReply rep; |
296 | xXF86DGAQueryDirectVideoReq *req; |
297 | |
298 | XF86DGACheckExtension (dpy, info, False); |
299 | |
300 | LockDisplay(dpy); |
301 | GetReq(XF86DGAQueryDirectVideo, req); |
302 | req->reqType = info->codes->major_opcode; |
303 | req->dgaReqType = X_XF86DGAQueryDirectVideo; |
304 | req->screen = screen; |
305 | if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { |
306 | UnlockDisplay(dpy); |
307 | SyncHandle(); |
308 | return False; |
309 | } |
310 | *flags = rep.flags; |
311 | UnlockDisplay(dpy); |
312 | SyncHandle(); |
313 | return True; |
314 | } |
315 | |
316 | Bool SDL_NAME(XF86DGAViewPortChanged)( |
317 | Display *dpy, |
318 | int screen, |
319 | int n |
320 | ){ |
321 | XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); |
322 | xXF86DGAViewPortChangedReply rep; |
323 | xXF86DGAViewPortChangedReq *req; |
324 | |
325 | XF86DGACheckExtension (dpy, info, False); |
326 | |
327 | LockDisplay(dpy); |
328 | GetReq(XF86DGAViewPortChanged, req); |
329 | req->reqType = info->codes->major_opcode; |
330 | req->dgaReqType = X_XF86DGAViewPortChanged; |
331 | req->screen = screen; |
332 | req->n = n; |
333 | if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { |
334 | UnlockDisplay(dpy); |
335 | SyncHandle(); |
336 | return False; |
337 | } |
338 | UnlockDisplay(dpy); |
339 | SyncHandle(); |
340 | return rep.result; |
341 | } |
342 | |
343 | |
344 | |
345 | /* Helper functions */ |
346 | |
347 | #include <X11/Xmd.h> |
348 | #include "../extensions/xf86dga.h" |
349 | #include <stdlib.h> |
350 | #include <stdio.h> |
351 | #include <fcntl.h> |
352 | #if defined(ISC) |
353 | # define HAS_SVR3_MMAP |
354 | # include <sys/types.h> |
355 | # include <errno.h> |
356 | |
357 | # include <sys/at_ansi.h> |
358 | # include <sys/kd.h> |
359 | |
360 | # include <sys/sysmacros.h> |
361 | # include <sys/immu.h> |
362 | # include <sys/region.h> |
363 | |
364 | # include <sys/mmap.h> |
365 | #else |
366 | # if !defined(Lynx) |
367 | # if !defined(__EMX__) |
368 | # include <sys/mman.h> |
369 | # endif |
370 | # else |
371 | # include <sys/types.h> |
372 | # include <errno.h> |
373 | # include <smem.h> |
374 | # endif |
375 | #endif |
376 | #include <sys/wait.h> |
377 | #include <signal.h> |
378 | #include <unistd.h> |
379 | |
380 | #if defined(SVR4) && !defined(sun) && !defined(SCO325) |
381 | #define DEV_MEM "/dev/pmem" |
382 | #elif defined(SVR4) && defined(sun) |
383 | #define DEV_MEM "/dev/xsvc" |
384 | #else |
385 | #define DEV_MEM "/dev/mem" |
386 | #endif |
387 | |
388 | typedef struct { |
389 | unsigned long physaddr; /* actual requested physical address */ |
390 | unsigned long size; /* actual requested map size */ |
391 | unsigned long delta; /* delta to account for page alignment */ |
392 | void * vaddr; /* mapped address, without the delta */ |
393 | int refcount; /* reference count */ |
394 | } MapRec, *MapPtr; |
395 | |
396 | typedef struct { |
397 | Display * display; |
398 | int screen; |
399 | MapPtr map; |
400 | } ScrRec, *ScrPtr; |
401 | |
402 | static int mapFd = -1; |
403 | static int numMaps = 0; |
404 | static int numScrs = 0; |
405 | static MapPtr *mapList = NULL; |
406 | static ScrPtr *scrList = NULL; |
407 | |
408 | static MapPtr |
409 | AddMap(void) |
410 | { |
411 | MapPtr *old; |
412 | |
413 | old = mapList; |
414 | mapList = realloc(mapList, sizeof(MapPtr) * (numMaps + 1)); |
415 | if (!mapList) { |
416 | mapList = old; |
417 | return NULL; |
418 | } |
419 | mapList[numMaps] = malloc(sizeof(MapRec)); |
420 | if (!mapList[numMaps]) |
421 | return NULL; |
422 | return mapList[numMaps++]; |
423 | } |
424 | |
425 | static ScrPtr |
426 | AddScr(void) |
427 | { |
428 | ScrPtr *old; |
429 | |
430 | old = scrList; |
431 | scrList = realloc(scrList, sizeof(ScrPtr) * (numScrs + 1)); |
432 | if (!scrList) { |
433 | scrList = old; |
434 | return NULL; |
435 | } |
436 | scrList[numScrs] = malloc(sizeof(ScrRec)); |
437 | if (!scrList[numScrs]) |
438 | return NULL; |
439 | return scrList[numScrs++]; |
440 | } |
441 | |
442 | static MapPtr |
443 | FindMap(unsigned long address, unsigned long size) |
444 | { |
445 | int i; |
446 | |
447 | for (i = 0; i < numMaps; i++) { |
448 | if (mapList[i]->physaddr == address && |
449 | mapList[i]->size == size) |
450 | return mapList[i]; |
451 | } |
452 | return NULL; |
453 | } |
454 | |
455 | static ScrPtr |
456 | FindScr(Display *display, int screen) |
457 | { |
458 | int i; |
459 | |
460 | for (i = 0; i < numScrs; i++) { |
461 | if (scrList[i]->display == display && |
462 | scrList[i]->screen == screen) |
463 | return scrList[i]; |
464 | } |
465 | return NULL; |
466 | } |
467 | |
468 | static void * |
469 | MapPhysAddress(unsigned long address, unsigned long size) |
470 | { |
471 | unsigned long offset, delta; |
472 | int pagesize = -1; |
473 | void *vaddr; |
474 | MapPtr mp; |
475 | #if defined(ISC) && defined(HAS_SVR3_MMAP) |
476 | struct kd_memloc mloc; |
477 | #elif defined(__EMX__) |
478 | APIRET rc; |
479 | ULONG action; |
480 | HFILE hfd; |
481 | #endif |
482 | |
483 | if ((mp = FindMap(address, size))) { |
484 | mp->refcount++; |
485 | return (void *)((unsigned long)mp->vaddr + mp->delta); |
486 | } |
487 | |
488 | #if defined(_SC_PAGESIZE) && defined(HAS_SC_PAGESIZE) |
489 | pagesize = sysconf(_SC_PAGESIZE); |
490 | #endif |
491 | #ifdef _SC_PAGE_SIZE |
492 | if (pagesize == -1) |
493 | pagesize = sysconf(_SC_PAGE_SIZE); |
494 | #endif |
495 | #ifdef HAS_GETPAGESIZE |
496 | if (pagesize == -1) |
497 | pagesize = getpagesize(); |
498 | #endif |
499 | #ifdef PAGE_SIZE |
500 | if (pagesize == -1) |
501 | pagesize = PAGE_SIZE; |
502 | #endif |
503 | if (pagesize == -1) |
504 | pagesize = 4096; |
505 | |
506 | delta = address % pagesize; |
507 | offset = address - delta; |
508 | |
509 | #if defined(ISC) && defined(HAS_SVR3_MMAP) |
510 | if (mapFd < 0) { |
511 | if ((mapFd = open("/dev/mmap", O_RDWR)) < 0) |
512 | return NULL; |
513 | } |
514 | mloc.vaddr = (char *)0; |
515 | mloc.physaddr = (char *)offset; |
516 | mloc.length = size + delta; |
517 | mloc.ioflg=1; |
518 | |
519 | if ((vaddr = (void *)ioctl(mapFd, MAP, &mloc)) == (void *)-1) |
520 | return NULL; |
521 | #elif defined (__EMX__) |
522 | /* |
523 | * Dragon warning here! /dev/pmap$ is never closed, except on progam exit. |
524 | * Consecutive calling of this routine will make PMAP$ driver run out |
525 | * of memory handles. Some umap/close mechanism should be provided |
526 | */ |
527 | |
528 | rc = DosOpen("/dev/pmap$", &hfd, &action, 0, FILE_NORMAL, FILE_OPEN, |
529 | OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE, (PEAOP2)NULL); |
530 | if (rc != 0) |
531 | return NULL; |
532 | { |
533 | struct map_ioctl { |
534 | union { |
535 | ULONG phys; |
536 | void* user; |
537 | } a; |
538 | ULONG size; |
539 | } pmap,dmap; |
540 | ULONG plen,dlen; |
541 | #define XFREE86_PMAP 0x76 |
542 | #define PMAP_MAP 0x44 |
543 | |
544 | pmap.a.phys = offset; |
545 | pmap.size = size + delta; |
546 | rc = DosDevIOCtl(hfd, XFREE86_PMAP, PMAP_MAP, |
547 | (PULONG)&pmap, sizeof(pmap), &plen, |
548 | (PULONG)&dmap, sizeof(dmap), &dlen); |
549 | if (rc == 0) { |
550 | vaddr = dmap.a.user; |
551 | } |
552 | } |
553 | if (rc != 0) |
554 | return NULL; |
555 | #elif defined (Lynx) |
556 | vaddr = (void *)smem_create("XF86DGA", (char *)offset, |
557 | size + delta, SM_READ|SM_WRITE); |
558 | #else |
559 | #ifndef MAP_FILE |
560 | #define MAP_FILE 0 |
561 | #endif |
562 | if (mapFd < 0) { |
563 | if ((mapFd = open(DEV_MEM, O_RDWR)) < 0) |
564 | return NULL; |
565 | } |
566 | vaddr = (void *)mmap(NULL, size + delta, PROT_READ | PROT_WRITE, |
567 | MAP_FILE | MAP_SHARED, mapFd, (off_t)offset); |
568 | if (vaddr == (void *)-1) |
569 | return NULL; |
570 | #endif |
571 | |
572 | if (!vaddr) { |
573 | if (!(mp = AddMap())) |
574 | return NULL; |
575 | mp->physaddr = address; |
576 | mp->size = size; |
577 | mp->delta = delta; |
578 | mp->vaddr = vaddr; |
579 | mp->refcount = 1; |
580 | } |
581 | return (void *)((unsigned long)vaddr + delta); |
582 | } |
583 | |
584 | /* |
585 | * Still need to find a clean way of detecting the death of a DGA app |
586 | * and returning things to normal - Jon |
587 | * This is here to help debugging without rebooting... Also C-A-BS |
588 | * should restore text mode. |
589 | */ |
590 | |
591 | int |
592 | SDL_NAME(XF86DGAForkApp)(int screen) |
593 | { |
594 | pid_t pid; |
595 | int status; |
596 | int i; |
597 | |
598 | /* fork the app, parent hangs around to clean up */ |
599 | if ((pid = fork()) > 0) { |
600 | ScrPtr sp; |
601 | |
602 | waitpid(pid, &status, 0); |
603 | for (i = 0; i < numScrs; i++) { |
604 | sp = scrList[i]; |
605 | SDL_NAME(XF86DGADirectVideoLL)(sp->display, sp->screen, 0); |
606 | XSync(sp->display, False); |
607 | } |
608 | if (WIFEXITED(status)) |
609 | _exit(0); |
610 | else |
611 | _exit(-1); |
612 | } |
613 | return pid; |
614 | } |
615 | |
616 | |
617 | Bool |
618 | SDL_NAME(XF86DGADirectVideo)( |
619 | Display *dis, |
620 | int screen, |
621 | int enable |
622 | ){ |
623 | ScrPtr sp; |
624 | MapPtr mp = NULL; |
625 | |
626 | if ((sp = FindScr(dis, screen))) |
627 | mp = sp->map; |
628 | |
629 | if (enable & XF86DGADirectGraphics) { |
630 | #if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \ |
631 | && !defined(__EMX__) |
632 | if (mp && mp->vaddr) |
633 | mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ | PROT_WRITE); |
634 | #endif |
635 | } else { |
636 | #if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \ |
637 | && !defined(__EMX__) |
638 | if (mp && mp->vaddr) |
639 | mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ); |
640 | #elif defined(Lynx) |
641 | /* XXX this doesn't allow enable after disable */ |
642 | smem_create(NULL, mp->vaddr, mp->size + mp->delta, SM_DETACH); |
643 | smem_remove("XF86DGA"); |
644 | #endif |
645 | } |
646 | |
647 | SDL_NAME(XF86DGADirectVideoLL)(dis, screen, enable); |
648 | return 1; |
649 | } |
650 | |
651 | |
652 | static void |
653 | XF86cleanup(int sig) |
654 | { |
655 | ScrPtr sp; |
656 | int i; |
657 | static char beenhere = 0; |
658 | |
659 | if (beenhere) |
660 | _exit(3); |
661 | beenhere = 1; |
662 | |
663 | for (i = 0; i < numScrs; i++) { |
664 | sp = scrList[i]; |
665 | SDL_NAME(XF86DGADirectVideo)(sp->display, sp->screen, 0); |
666 | XSync(sp->display, False); |
667 | } |
668 | _exit(3); |
669 | } |
670 | |
671 | Bool |
672 | SDL_NAME(XF86DGAGetVideo)( |
673 | Display *dis, |
674 | int screen, |
675 | char **addr, |
676 | int *width, |
677 | int *bank, |
678 | int *ram |
679 | ){ |
680 | /*unsigned long*/ int offset; |
681 | static int beenHere = 0; |
682 | ScrPtr sp; |
683 | MapPtr mp; |
684 | |
685 | if (!(sp = FindScr(dis, screen))) { |
686 | if (!(sp = AddScr())) { |
687 | fprintf(stderr, "XF86DGAGetVideo: malloc failure\n"); |
688 | exit(-2); |
689 | } |
690 | sp->display = dis; |
691 | sp->screen = screen; |
692 | sp->map = NULL; |
693 | } |
694 | |
695 | SDL_NAME(XF86DGAGetVideoLL)(dis, screen , &offset, width, bank, ram); |
696 | |
697 | *addr = MapPhysAddress(offset, *bank); |
698 | if (*addr == NULL) { |
699 | fprintf(stderr, "XF86DGAGetVideo: failed to map video memory (%s)\n", |
700 | strerror(errno)); |
701 | exit(-2); |
702 | } |
703 | |
704 | if ((mp = FindMap(offset, *bank))) |
705 | sp->map = mp; |
706 | |
707 | if (!beenHere) { |
708 | beenHere = 1; |
709 | atexit((void(*)(void))XF86cleanup); |
710 | /* one shot XF86cleanup attempts */ |
711 | signal(SIGSEGV, XF86cleanup); |
712 | #ifdef SIGBUS |
713 | signal(SIGBUS, XF86cleanup); |
714 | #endif |
715 | signal(SIGHUP, XF86cleanup); |
716 | signal(SIGFPE, XF86cleanup); |
717 | } |
718 | |
719 | return 1; |
720 | } |
721 | |