2 * Copyright (c) 1991-1997 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 #include <sys/types.h>
34 #include <sys/signal.h>
36 #include <sys/ioctl.h>
40 #include <sys/consio.h>
43 /* XXX Direct Color 24bits modes unsupported */
45 #define min(x, y) (((x) < (y)) ? (x) : (y))
46 #define max(x, y) (((x) > (y)) ? (x) : (y))
48 VGLBitmap *VGLDisplay;
49 video_info_t VGLModeInfo;
50 video_adapter_info_t VGLAdpInfo;
54 static int VGLOldMode;
55 static size_t VGLBufSize;
56 static byte *VGLMem = MAP_FAILED;
57 static int VGLSwitchPending;
58 static int VGLAbortPending;
59 static int VGLOnDisplay;
60 static unsigned int VGLCurWindow;
61 static int VGLInitDone = 0;
62 static vid_info_t VGLOldVInfo;
75 signal(SIGUSR1, SIG_IGN);
77 if (VGLMem != MAP_FAILED) {
78 VGLClear(VGLDisplay, 0);
79 munmap(VGLMem, VGLAdpInfo.va_window_size);
82 if (VGLOldMode >= M_VESA_BASE) {
83 /* ugly, but necessary */
84 ioctl(0, _IO('V', VGLOldMode - M_VESA_BASE), 0);
85 if (VGLOldMode == M_VESA_800x600) {
87 size[0] = VGLOldVInfo.mv_csz;
88 size[1] = VGLOldVInfo.mv_rsz;
90 ioctl(0, KDRASTER, size);
93 ioctl(0, _IO('S', VGLOldMode), 0);
95 ioctl(0, KDDISABIO, 0);
96 ioctl(0, KDSETMODE, KD_TEXT);
98 ioctl(0, VT_SETMODE, &smode);
108 VGLAbort(int arg __unused)
111 signal(SIGINT, SIG_IGN);
112 signal(SIGTERM, SIG_IGN);
113 signal(SIGSEGV, SIG_IGN);
114 signal(SIGBUS, SIG_IGN);
115 signal(SIGUSR2, SIG_IGN);
119 VGLSwitch(int arg __unused)
125 VGLSwitchPending = 1;
126 signal(SIGUSR1, VGLSwitch);
132 struct vt_mode smode;
138 signal(SIGUSR1, VGLSwitch);
139 signal(SIGINT, VGLAbort);
140 signal(SIGTERM, VGLAbort);
141 signal(SIGSEGV, VGLAbort);
142 signal(SIGBUS, VGLAbort);
143 signal(SIGUSR2, SIG_IGN);
146 VGLSwitchPending = 0;
149 if (ioctl(0, CONS_GET, &VGLOldMode) || ioctl(0, CONS_CURRENT, &adptype))
151 if (IOCGROUP(mode) == 'V') /* XXX: this is ugly */
152 VGLModeInfo.vi_mode = (mode & 0x0ff) + M_VESA_BASE;
154 VGLModeInfo.vi_mode = mode & 0x0ff;
155 if (ioctl(0, CONS_MODEINFO, &VGLModeInfo)) /* FBIO_MODEINFO */
158 /* If current mode is VESA_800x600 then save its geometry to restore later */
159 if ((VGLOldMode >= M_VESA_BASE) && (VGLOldMode == M_VESA_800x600)) {
160 VGLOldVInfo.size = sizeof(VGLOldVInfo);
161 if (ioctl(0, CONS_GETINFO, &VGLOldVInfo))
165 VGLDisplay = (VGLBitmap *)malloc(sizeof(VGLBitmap));
166 if (VGLDisplay == NULL)
169 if (ioctl(0, KDENABIO, 0)) {
177 * vi_mem_model specifies the memory model of the current video mode
180 switch (VGLModeInfo.vi_mem_model) {
181 case V_INFO_MM_PLANAR:
182 /* we can handle EGA/VGA planner modes only */
183 if (VGLModeInfo.vi_depth != 4 || VGLModeInfo.vi_planes != 4
184 || (adptype != KD_EGA && adptype != KD_VGA)) {
188 VGLDisplay->Type = VIDBUF4;
190 case V_INFO_MM_PACKED:
191 /* we can do only 256 color packed modes */
192 if (VGLModeInfo.vi_depth != 8) {
196 VGLDisplay->Type = VIDBUF8;
197 VGLDisplay->PixelBytes = 1;
200 VGLDisplay->Type = VIDBUF8X;
201 VGLDisplay->PixelBytes = 1;
203 case V_INFO_MM_DIRECT:
204 VGLDisplay->PixelBytes = VGLModeInfo.vi_pixel_size;
205 switch (VGLDisplay->PixelBytes) {
207 VGLDisplay->Type = VIDBUF16;
211 VGLDisplay->Type = VIDBUF24;
215 VGLDisplay->Type = VIDBUF32;
227 ioctl(0, VT_WAITACTIVE, 0);
228 ioctl(0, KDSETMODE, KD_GRAPHICS);
229 if (ioctl(0, mode, 0)) {
233 if (ioctl(0, CONS_ADPINFO, &VGLAdpInfo)) { /* FBIO_ADPINFO */
239 * Calculate the shadow screen buffer size. In -CURRENT, va_buffer_size
240 * always holds the entire frame buffer size, wheather it's in the linear
241 * mode or windowed mode.
242 * VGLBufSize = VGLAdpInfo.va_buffer_size;
243 * In -STABLE, va_buffer_size holds the frame buffer size, only if
244 * the linear frame buffer mode is supported. Otherwise the field is zero.
245 * We shall calculate the minimal size in this case:
246 * VGLAdpInfo.va_line_width*VGLModeInfo.vi_height*VGLModeInfo.vi_planes
248 * VGLAdpInfo.va_window_size*VGLModeInfo.vi_planes;
249 * Use whichever is larger.
251 if (VGLAdpInfo.va_buffer_size != 0)
252 VGLBufSize = VGLAdpInfo.va_buffer_size;
254 VGLBufSize = max(VGLAdpInfo.va_line_width*VGLModeInfo.vi_height,
255 VGLAdpInfo.va_window_size)*VGLModeInfo.vi_planes;
256 VGLBuf = malloc(VGLBufSize);
257 if (VGLBuf == NULL) {
263 fprintf(stderr, "VGLBufSize:0x%x\n", VGLBufSize);
266 /* see if we are in the windowed buffer mode or in the linear buffer mode */
267 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size) {
268 switch (VGLDisplay->Type) {
270 VGLDisplay->Type = VIDBUF4S;
273 VGLDisplay->Type = VIDBUF8S;
276 VGLDisplay->Type = VIDBUF16S;
279 VGLDisplay->Type = VIDBUF24S;
282 VGLDisplay->Type = VIDBUF32S;
293 VGLDisplay->Xsize = VGLModeInfo.vi_width;
294 VGLDisplay->Ysize = VGLModeInfo.vi_height;
295 VGLDisplay->VXsize = VGLAdpInfo.va_line_width
296 *8/(VGLModeInfo.vi_depth/VGLModeInfo.vi_planes);
297 VGLDisplay->VYsize = VGLBufSize/VGLModeInfo.vi_planes/VGLAdpInfo.va_line_width;
298 VGLDisplay->Xorigin = 0;
299 VGLDisplay->Yorigin = 0;
301 VGLMem = (byte*)mmap(0, VGLAdpInfo.va_window_size, PROT_READ|PROT_WRITE,
303 if (VGLMem == MAP_FAILED) {
307 VGLDisplay->Bitmap = VGLMem;
312 fprintf(stderr, "va_line_width:%d\n", VGLAdpInfo.va_line_width);
313 fprintf(stderr, "VGLXsize:%d, Ysize:%d, VXsize:%d, VYsize:%d\n",
314 VGLDisplay->Xsize, VGLDisplay->Ysize,
315 VGLDisplay->VXsize, VGLDisplay->VYsize);
318 smode.mode = VT_PROCESS;
320 smode.relsig = SIGUSR1;
321 smode.acqsig = SIGUSR1;
322 smode.frsig = SIGINT;
323 if (ioctl(0, VT_SETMODE, &smode)) {
327 VGLTextSetFontFile((byte*)0);
328 VGLClear(VGLDisplay, 0);
335 if (VGLAbortPending) {
339 while (VGLSwitchPending) {
344 VGLSwitchPending = 0;
346 ioctl(0, KDENABIO, 0);
347 ioctl(0, KDSETMODE, KD_GRAPHICS);
348 ioctl(0, VGLMode, 0);
350 VGLMem = (byte*)mmap(0, VGLAdpInfo.va_window_size, PROT_READ|PROT_WRITE,
353 /* XXX: what if mmap() has failed! */
354 VGLDisplay->Type = VIDBUF8; /* XXX */
355 switch (VGLModeInfo.vi_mem_model) {
356 case V_INFO_MM_PLANAR:
357 if (VGLModeInfo.vi_depth == 4 && VGLModeInfo.vi_planes == 4) {
358 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
359 VGLDisplay->Type = VIDBUF4S;
361 VGLDisplay->Type = VIDBUF4;
363 /* shouldn't be happening */
366 case V_INFO_MM_PACKED:
367 if (VGLModeInfo.vi_depth == 8) {
368 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
369 VGLDisplay->Type = VIDBUF8S;
371 VGLDisplay->Type = VIDBUF8;
375 VGLDisplay->Type = VIDBUF8X;
377 case V_INFO_MM_DIRECT:
378 switch (VGLModeInfo.vi_pixel_size) {
380 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
381 VGLDisplay->Type = VIDBUF16S;
383 VGLDisplay->Type = VIDBUF16;
386 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
387 VGLDisplay->Type = VIDBUF24S;
389 VGLDisplay->Type = VIDBUF24;
392 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
393 VGLDisplay->Type = VIDBUF32S;
395 VGLDisplay->Type = VIDBUF32;
398 /* shouldn't be happening */
402 /* shouldn't be happening */
406 VGLDisplay->Bitmap = VGLMem;
407 VGLDisplay->Xsize = VGLModeInfo.vi_width;
408 VGLDisplay->Ysize = VGLModeInfo.vi_height;
409 VGLSetVScreenSize(VGLDisplay, VGLDisplay->VXsize, VGLDisplay->VYsize);
410 VGLPanScreen(VGLDisplay, VGLDisplay->Xorigin, VGLDisplay->Yorigin);
411 switch (VGLDisplay->Type) {
414 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
415 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
416 for (offset = 0; offset < VGLBufSize/VGLModeInfo.vi_planes;
418 VGLSetSegment(offset);
419 len = min(VGLBufSize/VGLModeInfo.vi_planes - offset,
420 VGLAdpInfo.va_window_size);
421 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
423 outb(0x3c5, 0x01<<i);
424 bcopy(&VGLBuf[i*VGLBufSize/VGLModeInfo.vi_planes + offset],
432 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
433 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
434 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
436 outb(0x3c5, 0x01<<i);
437 bcopy(&VGLBuf[i*VGLAdpInfo.va_window_size], VGLMem,
438 VGLAdpInfo.va_window_size);
449 for (offset = 0; offset < VGLBufSize; offset += len) {
450 VGLSetSegment(offset);
451 len = min(VGLBufSize - offset, VGLAdpInfo.va_window_size);
452 bcopy(&VGLBuf[offset], VGLMem, len);
457 ioctl(0, VT_RELDISP, VT_ACKACQ);
460 switch (VGLDisplay->Type) {
462 for (offset = 0; offset < VGLBufSize/VGLModeInfo.vi_planes;
464 VGLSetSegment(offset);
465 len = min(VGLBufSize/VGLModeInfo.vi_planes - offset,
466 VGLAdpInfo.va_window_size);
467 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
470 bcopy(VGLMem, &VGLBuf[i*VGLBufSize/VGLModeInfo.vi_planes + offset],
478 * NOTE: the saved buffer is NOT in the MEMBUF format which
479 * the ordinary memory bitmap object is stored in. XXX
481 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
484 bcopy(VGLMem, &VGLBuf[i*VGLAdpInfo.va_window_size],
485 VGLAdpInfo.va_window_size);
496 for (offset = 0; offset < VGLBufSize; offset += len) {
497 VGLSetSegment(offset);
498 len = min(VGLBufSize - offset, VGLAdpInfo.va_window_size);
499 bcopy(VGLMem, &VGLBuf[offset], len);
504 munmap(VGLDisplay->Bitmap, VGLAdpInfo.va_window_size);
505 ioctl(0, VGLOldMode, 0);
506 ioctl(0, KDSETMODE, KD_TEXT);
507 ioctl(0, KDDISABIO, 0);
508 ioctl(0, VT_RELDISP, VT_TRUE);
509 VGLDisplay->Bitmap = VGLBuf;
510 VGLDisplay->Type = MEMBUF;
511 VGLDisplay->Xsize = VGLDisplay->VXsize;
512 VGLDisplay->Ysize = VGLDisplay->VYsize;
513 while (!VGLOnDisplay) pause();
519 VGLSetSegment(unsigned int offset)
521 if (offset/VGLAdpInfo.va_window_size != VGLCurWindow) {
522 ioctl(0, CONS_SETWINORG, offset); /* FBIO_SETWINORG */
523 VGLCurWindow = offset/VGLAdpInfo.va_window_size;
525 return (offset%VGLAdpInfo.va_window_size);
529 VGLSetVScreenSize(VGLBitmap *object, int VXsize, int VYsize)
531 if (VXsize < object->Xsize || VYsize < object->Ysize)
533 if (object->Type == MEMBUF)
535 if (ioctl(0, FBIO_SETLINEWIDTH, &VXsize))
537 ioctl(0, CONS_ADPINFO, &VGLAdpInfo); /* FBIO_ADPINFO */
538 object->VXsize = VGLAdpInfo.va_line_width
539 *8/(VGLModeInfo.vi_depth/VGLModeInfo.vi_planes);
540 object->VYsize = VGLBufSize/VGLModeInfo.vi_planes/VGLAdpInfo.va_line_width;
541 if (VYsize < object->VYsize)
542 object->VYsize = VYsize;
545 fprintf(stderr, "new size: VGLXsize:%d, Ysize:%d, VXsize:%d, VYsize:%d\n",
546 object->Xsize, object->Ysize, object->VXsize, object->VYsize);
553 VGLPanScreen(VGLBitmap *object, int x, int y)
555 video_display_start_t origin;
557 if (x < 0 || x + object->Xsize > object->VXsize
558 || y < 0 || y + object->Ysize > object->VYsize)
560 if (object->Type == MEMBUF)
564 if (ioctl(0, FBIO_SETDISPSTART, &origin))
570 fprintf(stderr, "new origin: (%d, %d)\n", x, y);