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 withough 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.
28 * $FreeBSD: src/lib/libvgl/main.c,v 1.6.2.2 2001/07/30 14:31:30 yokota Exp $
32 #include <sys/types.h>
33 #include <sys/signal.h>
35 #include <sys/ioctl.h>
37 #include <machine/console.h>
40 #define min(x, y) (((x) < (y)) ? (x) : (y))
41 #define max(x, y) (((x) > (y)) ? (x) : (y))
43 VGLBitmap *VGLDisplay;
44 video_info_t VGLModeInfo;
45 video_adapter_info_t VGLAdpInfo;
49 static int VGLOldMode;
50 static size_t VGLBufSize;
51 static byte *VGLMem = MAP_FAILED;
52 static int VGLSwitchPending;
53 static int VGLAbortPending;
54 static int VGLOnDisplay;
55 static unsigned int VGLCurWindow;
56 static int VGLInitDone = 0;
57 static struct winsize VGLOldWSize;
70 signal(SIGUSR1, SIG_IGN);
72 if (VGLMem != MAP_FAILED) {
73 VGLClear(VGLDisplay, 0);
74 munmap(VGLMem, VGLAdpInfo.va_window_size);
77 if (VGLOldMode >= M_VESA_BASE) {
78 /* ugly, but necessary */
79 ioctl(0, _IO('V', VGLOldMode - M_VESA_BASE), 0);
80 if (VGLOldMode == M_VESA_800x600) {
82 size[0] = VGLOldWSize.ws_col;
83 size[1] = VGLOldWSize.ws_row;
85 ioctl(0, KDRASTER, size);
88 ioctl(0, _IO('S', VGLOldMode), 0);
90 ioctl(0, KDDISABIO, 0);
91 ioctl(0, KDSETMODE, KD_TEXT);
93 ioctl(0, VT_SETMODE, &smode);
106 signal(SIGINT, SIG_IGN);
107 signal(SIGTERM, SIG_IGN);
108 signal(SIGSEGV, SIG_IGN);
109 signal(SIGBUS, SIG_IGN);
110 signal(SIGUSR2, SIG_IGN);
120 VGLSwitchPending = 1;
121 signal(SIGUSR1, VGLSwitch);
127 struct vt_mode smode;
133 signal(SIGUSR1, VGLSwitch);
134 signal(SIGINT, VGLAbort);
135 signal(SIGTERM, VGLAbort);
136 signal(SIGSEGV, VGLAbort);
137 signal(SIGBUS, VGLAbort);
138 signal(SIGUSR2, SIG_IGN);
141 VGLSwitchPending = 0;
144 if (ioctl(0, CONS_GET, &VGLOldMode) || ioctl(0, CONS_CURRENT, &adptype))
146 if (IOCGROUP(mode) == 'V') /* XXX: this is ugly */
147 VGLModeInfo.vi_mode = (mode & 0x0ff) + M_VESA_BASE;
149 VGLModeInfo.vi_mode = mode & 0x0ff;
150 if (ioctl(0, CONS_MODEINFO, &VGLModeInfo)) /* FBIO_MODEINFO */
153 /* If current mode is VESA_800x600 then save its geometry to restore later */
154 if ((VGLOldMode >= M_VESA_BASE) && (VGLOldMode == M_VESA_800x600))
155 if (ioctl(0, TIOCGWINSZ, &VGLOldWSize))
158 VGLDisplay = (VGLBitmap *)malloc(sizeof(VGLBitmap));
159 if (VGLDisplay == NULL)
162 if (ioctl(0, KDENABIO, 0)) {
170 * vi_mem_model specifies the memory model of the current video mode
173 switch (VGLModeInfo.vi_mem_model) {
174 case V_INFO_MM_PLANAR:
175 /* we can handle EGA/VGA planner modes only */
176 if (VGLModeInfo.vi_depth != 4 || VGLModeInfo.vi_planes != 4
177 || (adptype != KD_EGA && adptype != KD_VGA)) {
181 VGLDisplay->Type = VIDBUF4;
183 case V_INFO_MM_PACKED:
184 /* we can do only 256 color packed modes */
185 if (VGLModeInfo.vi_depth != 8) {
189 VGLDisplay->Type = VIDBUF8;
192 VGLDisplay->Type = VIDBUF8X;
199 ioctl(0, VT_WAITACTIVE, 0);
200 ioctl(0, KDSETMODE, KD_GRAPHICS);
201 if (ioctl(0, mode, 0)) {
205 if (ioctl(0, CONS_ADPINFO, &VGLAdpInfo)) { /* FBIO_ADPINFO */
211 * Calculate the shadow screen buffer size. In -CURRENT, va_buffer_size
212 * always holds the entire frame buffer size, wheather it's in the linear
213 * mode or windowed mode.
214 * VGLBufSize = VGLAdpInfo.va_buffer_size;
215 * In -STABLE, va_buffer_size holds the frame buffer size, only if
216 * the linear frame buffer mode is supported. Otherwise the field is zero.
217 * We shall calculate the minimal size in this case:
218 * VGLAdpInfo.va_line_width*VGLModeInfo.vi_height*VGLModeInfo.vi_planes
220 * VGLAdpInfo.va_window_size*VGLModeInfo.vi_planes;
221 * Use whichever is larger.
223 if (VGLAdpInfo.va_buffer_size != 0)
224 VGLBufSize = VGLAdpInfo.va_buffer_size;
226 VGLBufSize = max(VGLAdpInfo.va_line_width*VGLModeInfo.vi_height,
227 VGLAdpInfo.va_window_size)*VGLModeInfo.vi_planes;
228 VGLBuf = malloc(VGLBufSize);
229 if (VGLBuf == NULL) {
235 fprintf(stderr, "VGLBufSize:0x%x\n", VGLBufSize);
238 /* see if we are in the windowed buffer mode or in the linear buffer mode */
239 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size) {
240 if (VGLDisplay->Type == VIDBUF4)
241 VGLDisplay->Type = VIDBUF4S;
242 else if (VGLDisplay->Type == VIDBUF8)
243 VGLDisplay->Type = VIDBUF8S;
249 VGLDisplay->Xsize = VGLModeInfo.vi_width;
250 VGLDisplay->Ysize = VGLModeInfo.vi_height;
251 VGLDisplay->VXsize = VGLAdpInfo.va_line_width
252 *8/(VGLModeInfo.vi_depth/VGLModeInfo.vi_planes);
253 VGLDisplay->VYsize = VGLBufSize/VGLModeInfo.vi_planes/VGLAdpInfo.va_line_width;
254 VGLDisplay->Xorigin = 0;
255 VGLDisplay->Yorigin = 0;
257 VGLMem = (byte*)mmap(0, VGLAdpInfo.va_window_size, PROT_READ|PROT_WRITE,
259 if (VGLMem == MAP_FAILED) {
263 VGLDisplay->Bitmap = VGLMem;
268 fprintf(stderr, "va_line_width:%d\n", VGLAdpInfo.va_line_width);
269 fprintf(stderr, "VGLXsize:%d, Ysize:%d, VXsize:%d, VYsize:%d\n",
270 VGLDisplay->Xsize, VGLDisplay->Ysize,
271 VGLDisplay->VXsize, VGLDisplay->VYsize);
274 smode.mode = VT_PROCESS;
276 smode.relsig = SIGUSR1;
277 smode.acqsig = SIGUSR1;
278 smode.frsig = SIGINT;
279 if (ioctl(0, VT_SETMODE, &smode)) {
283 VGLTextSetFontFile((byte*)0);
284 VGLClear(VGLDisplay, 0);
291 if (VGLAbortPending) {
295 while (VGLSwitchPending) {
300 VGLSwitchPending = 0;
302 ioctl(0, KDENABIO, 0);
303 ioctl(0, KDSETMODE, KD_GRAPHICS);
304 ioctl(0, VGLMode, 0);
306 VGLMem = (byte*)mmap(0, VGLAdpInfo.va_window_size, PROT_READ|PROT_WRITE,
309 /* XXX: what if mmap() has failed! */
310 VGLDisplay->Type = VIDBUF8; /* XXX */
311 switch (VGLModeInfo.vi_mem_model) {
312 case V_INFO_MM_PLANAR:
313 if (VGLModeInfo.vi_depth == 4 && VGLModeInfo.vi_planes == 4) {
314 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
315 VGLDisplay->Type = VIDBUF4S;
317 VGLDisplay->Type = VIDBUF4;
319 /* shouldn't be happening */
322 case V_INFO_MM_PACKED:
323 if (VGLModeInfo.vi_depth == 8) {
324 if (VGLBufSize/VGLModeInfo.vi_planes > VGLAdpInfo.va_window_size)
325 VGLDisplay->Type = VIDBUF8S;
327 VGLDisplay->Type = VIDBUF8;
329 /* shouldn't be happening */
333 VGLDisplay->Type = VIDBUF8X;
336 /* shouldn't be happening */
340 VGLDisplay->Bitmap = VGLMem;
341 VGLDisplay->Xsize = VGLModeInfo.vi_width;
342 VGLDisplay->Ysize = VGLModeInfo.vi_height;
343 VGLSetVScreenSize(VGLDisplay, VGLDisplay->VXsize, VGLDisplay->VYsize);
344 VGLPanScreen(VGLDisplay, VGLDisplay->Xorigin, VGLDisplay->Yorigin);
345 switch (VGLDisplay->Type) {
348 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
349 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
350 for (offset = 0; offset < VGLBufSize/VGLModeInfo.vi_planes;
352 VGLSetSegment(offset);
353 len = min(VGLBufSize/VGLModeInfo.vi_planes - offset,
354 VGLAdpInfo.va_window_size);
355 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
357 outb(0x3c5, 0x01<<i);
358 bcopy(&VGLBuf[i*VGLBufSize/VGLModeInfo.vi_planes + offset],
366 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
367 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
368 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
370 outb(0x3c5, 0x01<<i);
371 bcopy(&VGLBuf[i*VGLAdpInfo.va_window_size], VGLMem,
372 VGLAdpInfo.va_window_size);
377 for (offset = 0; offset < VGLBufSize; offset += len) {
378 VGLSetSegment(offset);
379 len = min(VGLBufSize - offset, VGLAdpInfo.va_window_size);
380 bcopy(&VGLBuf[offset], VGLMem, len);
385 ioctl(0, VT_RELDISP, VT_ACKACQ);
388 switch (VGLDisplay->Type) {
390 for (offset = 0; offset < VGLBufSize/VGLModeInfo.vi_planes;
392 VGLSetSegment(offset);
393 len = min(VGLBufSize/VGLModeInfo.vi_planes - offset,
394 VGLAdpInfo.va_window_size);
395 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
398 bcopy(VGLMem, &VGLBuf[i*VGLBufSize/VGLModeInfo.vi_planes + offset],
406 * NOTE: the saved buffer is NOT in the MEMBUF format which
407 * the ordinary memory bitmap object is stored in. XXX
409 for (i = 0; i < VGLModeInfo.vi_planes; i++) {
412 bcopy(VGLMem, &VGLBuf[i*VGLAdpInfo.va_window_size],
413 VGLAdpInfo.va_window_size);
418 for (offset = 0; offset < VGLBufSize; offset += len) {
419 VGLSetSegment(offset);
420 len = min(VGLBufSize - offset, VGLAdpInfo.va_window_size);
421 bcopy(VGLMem, &VGLBuf[offset], len);
426 munmap(VGLDisplay->Bitmap, VGLAdpInfo.va_window_size);
427 ioctl(0, VGLOldMode, 0);
428 ioctl(0, KDSETMODE, KD_TEXT);
429 ioctl(0, KDDISABIO, 0);
430 ioctl(0, VT_RELDISP, VT_TRUE);
431 VGLDisplay->Bitmap = VGLBuf;
432 VGLDisplay->Type = MEMBUF;
433 VGLDisplay->Xsize = VGLDisplay->VXsize;
434 VGLDisplay->Ysize = VGLDisplay->VYsize;
435 while (!VGLOnDisplay) pause();
441 VGLSetSegment(unsigned int offset)
443 if (offset/VGLAdpInfo.va_window_size != VGLCurWindow) {
444 ioctl(0, CONS_SETWINORG, offset); /* FBIO_SETWINORG */
445 VGLCurWindow = offset/VGLAdpInfo.va_window_size;
447 return (offset%VGLAdpInfo.va_window_size);
451 VGLSetVScreenSize(VGLBitmap *object, int VXsize, int VYsize)
453 if (VXsize < object->Xsize || VYsize < object->Ysize)
455 if (object->Type == MEMBUF)
457 if (ioctl(0, FBIO_SETLINEWIDTH, &VXsize))
459 ioctl(0, CONS_ADPINFO, &VGLAdpInfo); /* FBIO_ADPINFO */
460 object->VXsize = VGLAdpInfo.va_line_width
461 *8/(VGLModeInfo.vi_depth/VGLModeInfo.vi_planes);
462 object->VYsize = VGLBufSize/VGLModeInfo.vi_planes/VGLAdpInfo.va_line_width;
463 if (VYsize < object->VYsize)
464 object->VYsize = VYsize;
467 fprintf(stderr, "new size: VGLXsize:%d, Ysize:%d, VXsize:%d, VYsize:%d\n",
468 object->Xsize, object->Ysize, object->VXsize, object->VYsize);
475 VGLPanScreen(VGLBitmap *object, int x, int y)
477 video_display_start_t origin;
479 if (x < 0 || x + object->Xsize > object->VXsize
480 || y < 0 || y + object->Ysize > object->VYsize)
482 if (object->Type == MEMBUF)
486 if (ioctl(0, FBIO_SETDISPSTART, &origin))
492 fprintf(stderr, "new origin: (%d, %d)\n", x, y);