?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
monitor: Don't change VNC server when disabled (Jan Kiszka)
[sniper_test.git] / hw / vga.c
blob98c2234f6b373de718fd40c0ce856d4698852d57
1 /*
2 * QEMU VGA Emulator.
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "hw.h"
25 #include "console.h"
26 #include "pc.h"
27 #include "pci.h"
28 #include "vga_int.h"
29 #include "pixel_ops.h"
30 #include "qemu-timer.h"
31 #include "kvm.h"
32
33 //#define DEBUG_VGA
34 //#define DEBUG_VGA_MEM
35 //#define DEBUG_VGA_REG
36
37 //#define DEBUG_BOCHS_VBE
38
39 /* force some bits to zero */
40 const uint8_t sr_mask[8] = {
41 (uint8_t)~0xfc,
42 (uint8_t)~0xc2,
43 (uint8_t)~0xf0,
44 (uint8_t)~0xc0,
45 (uint8_t)~0xf1,
46 (uint8_t)~0xff,
47 (uint8_t)~0xff,
48 (uint8_t)~0x00,
49 };
50
51 const uint8_t gr_mask[16] = {
52 (uint8_t)~0xf0, /* 0x00 */
53 (uint8_t)~0xf0, /* 0x01 */
54 (uint8_t)~0xf0, /* 0x02 */
55 (uint8_t)~0xe0, /* 0x03 */
56 (uint8_t)~0xfc, /* 0x04 */
57 (uint8_t)~0x84, /* 0x05 */
58 (uint8_t)~0xf0, /* 0x06 */
59 (uint8_t)~0xf0, /* 0x07 */
60 (uint8_t)~0x00, /* 0x08 */
61 (uint8_t)~0xff, /* 0x09 */
62 (uint8_t)~0xff, /* 0x0a */
63 (uint8_t)~0xff, /* 0x0b */
64 (uint8_t)~0xff, /* 0x0c */
65 (uint8_t)~0xff, /* 0x0d */
66 (uint8_t)~0xff, /* 0x0e */
67 (uint8_t)~0xff, /* 0x0f */
68 };
69
70 #define cbswap_32(__x) \
71 ((uint32_t)( \
72 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
73 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
74 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
75 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
76
77 #ifdef WORDS_BIGENDIAN
78 #define PAT(x) cbswap_32(x)
79 #else
80 #define PAT(x) (x)
81 #endif
82
83 #ifdef WORDS_BIGENDIAN
84 #define BIG 1
85 #else
86 #define BIG 0
87 #endif
88
89 #ifdef WORDS_BIGENDIAN
90 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
91 #else
92 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
93 #endif
94
95 static const uint32_t mask16[16] = {
96 PAT(0x00000000),
97 PAT(0x000000ff),
98 PAT(0x0000ff00),
99 PAT(0x0000ffff),
100 PAT(0x00ff0000),
101 PAT(0x00ff00ff),
102 PAT(0x00ffff00),
103 PAT(0x00ffffff),
104 PAT(0xff000000),
105 PAT(0xff0000ff),
106 PAT(0xff00ff00),
107 PAT(0xff00ffff),
108 PAT(0xffff0000),
109 PAT(0xffff00ff),
110 PAT(0xffffff00),
111 PAT(0xffffffff),
112 };
113
114 #undef PAT
115
116 #ifdef WORDS_BIGENDIAN
117 #define PAT(x) (x)
118 #else
119 #define PAT(x) cbswap_32(x)
120 #endif
121
122 static const uint32_t dmask16[16] = {
123 PAT(0x00000000),
124 PAT(0x000000ff),
125 PAT(0x0000ff00),
126 PAT(0x0000ffff),
127 PAT(0x00ff0000),
128 PAT(0x00ff00ff),
129 PAT(0x00ffff00),
130 PAT(0x00ffffff),
131 PAT(0xff000000),
132 PAT(0xff0000ff),
133 PAT(0xff00ff00),
134 PAT(0xff00ffff),
135 PAT(0xffff0000),
136 PAT(0xffff00ff),
137 PAT(0xffffff00),
138 PAT(0xffffffff),
139 };
140
141 static const uint32_t dmask4[4] = {
142 PAT(0x00000000),
143 PAT(0x0000ffff),
144 PAT(0xffff0000),
145 PAT(0xffffffff),
146 };
147
148 static uint32_t expand4[256];
149 static uint16_t expand2[256];
150 static uint8_t expand4to8[16];
151
152 static void vga_screen_dump(void *opaque, const char *filename);
153
154 static void vga_dumb_update_retrace_info(VGAState *s)
155 {
156 (void) s;
157 }
158
159 static void vga_precise_update_retrace_info(VGAState *s)
160 {
161 int htotal_chars;
162 int hretr_start_char;
163 int hretr_skew_chars;
164 int hretr_end_char;
165
166 int vtotal_lines;
167 int vretr_start_line;
168 int vretr_end_line;
169
170 int div2, sldiv2, dots;
171 int clocking_mode;
172 int clock_sel;
173 const int clk_hz[] = {25175000, 28322000, 25175000, 25175000};
174 int64_t chars_per_sec;
175 struct vga_precise_retrace *r = &s->retrace_info.precise;
176
177 htotal_chars = s->cr[0x00] + 5;
178 hretr_start_char = s->cr[0x04];
179 hretr_skew_chars = (s->cr[0x05] >> 5) & 3;
180 hretr_end_char = s->cr[0x05] & 0x1f;
181
182 vtotal_lines = (s->cr[0x06]
183 | (((s->cr[0x07] & 1) | ((s->cr[0x07] >> 4) & 2)) << 8)) + 2
184 ;
185 vretr_start_line = s->cr[0x10]
186 | ((((s->cr[0x07] >> 2) & 1) | ((s->cr[0x07] >> 6) & 2)) << 8)
187 ;
188 vretr_end_line = s->cr[0x11] & 0xf;
189
190
191 div2 = (s->cr[0x17] >> 2) & 1;
192 sldiv2 = (s->cr[0x17] >> 3) & 1;
193
194 clocking_mode = (s->sr[0x01] >> 3) & 1;
195 clock_sel = (s->msr >> 2) & 3;
196 dots = (s->msr & 1) ? 8 : 9;
197
198 chars_per_sec = clk_hz[clock_sel] / dots;
199
200 htotal_chars <<= clocking_mode;
201
202 r->total_chars = vtotal_lines * htotal_chars;
203 if (r->freq) {
204 r->ticks_per_char = ticks_per_sec / (r->total_chars * r->freq);
205 } else {
206 r->ticks_per_char = ticks_per_sec / chars_per_sec;
207 }
208
209 r->vstart = vretr_start_line;
210 r->vend = r->vstart + vretr_end_line + 1;
211
212 r->hstart = hretr_start_char + hretr_skew_chars;
213 r->hend = r->hstart + hretr_end_char + 1;
214 r->htotal = htotal_chars;
215
216 #if 0
217 printf (
218 "hz=%f\n"
219 "htotal = %d\n"
220 "hretr_start = %d\n"
221 "hretr_skew = %d\n"
222 "hretr_end = %d\n"
223 "vtotal = %d\n"
224 "vretr_start = %d\n"
225 "vretr_end = %d\n"
226 "div2 = %d sldiv2 = %d\n"
227 "clocking_mode = %d\n"
228 "clock_sel = %d %d\n"
229 "dots = %d\n"
230 "ticks/char = %lld\n"
231 "\n",
232 (double) ticks_per_sec / (r->ticks_per_char * r->total_chars),
233 htotal_chars,
234 hretr_start_char,
235 hretr_skew_chars,
236 hretr_end_char,
237 vtotal_lines,
238 vretr_start_line,
239 vretr_end_line,
240 div2, sldiv2,
241 clocking_mode,
242 clock_sel,
243 clk_hz[clock_sel],
244 dots,
245 r->ticks_per_char
246 );
247 #endif
248 }
249
250 static uint8_t vga_precise_retrace(VGAState *s)
251 {
252 struct vga_precise_retrace *r = &s->retrace_info.precise;
253 uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE);
254
255 if (r->total_chars) {
256 int cur_line, cur_line_char, cur_char;
257 int64_t cur_tick;
258
259 cur_tick = qemu_get_clock(vm_clock);
260
261 cur_char = (cur_tick / r->ticks_per_char) % r->total_chars;
262 cur_line = cur_char / r->htotal;
263
264 if (cur_line >= r->vstart && cur_line <= r->vend) {
265 val |= ST01_V_RETRACE | ST01_DISP_ENABLE;
266 } else {
267 cur_line_char = cur_char % r->htotal;
268 if (cur_line_char >= r->hstart && cur_line_char <= r->hend) {
269 val |= ST01_DISP_ENABLE;
270 }
271 }
272
273 return val;
274 } else {
275 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
276 }
277 }
278
279 static uint8_t vga_dumb_retrace(VGAState *s)
280 {
281 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
282 }
283
284 static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
285 {
286 VGAState *s = opaque;
287 int val, index;
288
289 /* check port range access depending on color/monochrome mode */
290 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
291 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
292 val = 0xff;
293 } else {
294 switch(addr) {
295 case 0x3c0:
296 if (s->ar_flip_flop == 0) {
297 val = s->ar_index;
298 } else {
299 val = 0;
300 }
301 break;
302 case 0x3c1:
303 index = s->ar_index & 0x1f;
304 if (index < 21)
305 val = s->ar[index];
306 else
307 val = 0;
308 break;
309 case 0x3c2:
310 val = s->st00;
311 break;
312 case 0x3c4:
313 val = s->sr_index;
314 break;
315 case 0x3c5:
316 val = s->sr[s->sr_index];
317 #ifdef DEBUG_VGA_REG
318 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
319 #endif
320 break;
321 case 0x3c7:
322 val = s->dac_state;
323 break;
324 case 0x3c8:
325 val = s->dac_write_index;
326 break;
327 case 0x3c9:
328 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
329 if (++s->dac_sub_index == 3) {
330 s->dac_sub_index = 0;
331 s->dac_read_index++;
332 }
333 break;
334 case 0x3ca:
335 val = s->fcr;
336 break;
337 case 0x3cc:
338 val = s->msr;
339 break;
340 case 0x3ce:
341 val = s->gr_index;
342 break;
343 case 0x3cf:
344 val = s->gr[s->gr_index];
345 #ifdef DEBUG_VGA_REG
346 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
347 #endif
348 break;
349 case 0x3b4:
350 case 0x3d4:
351 val = s->cr_index;
352 break;
353 case 0x3b5:
354 case 0x3d5:
355 val = s->cr[s->cr_index];
356 #ifdef DEBUG_VGA_REG
357 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
358 #endif
359 break;
360 case 0x3ba:
361 case 0x3da:
362 /* just toggle to fool polling */
363 val = s->st01 = s->retrace(s);
364 s->ar_flip_flop = 0;
365 break;
366 default:
367 val = 0x00;
368 break;
369 }
370 }
371 #if defined(DEBUG_VGA)
372 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
373 #endif
374 return val;
375 }
376
377 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
378 {
379 VGAState *s = opaque;
380 int index;
381
382 /* check port range access depending on color/monochrome mode */
383 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
384 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
385 return;
386
387 #ifdef DEBUG_VGA
388 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
389 #endif
390
391 switch(addr) {
392 case 0x3c0:
393 if (s->ar_flip_flop == 0) {
394 val &= 0x3f;
395 s->ar_index = val;
396 } else {
397 index = s->ar_index & 0x1f;
398 switch(index) {
399 case 0x00 ... 0x0f:
400 s->ar[index] = val & 0x3f;
401 break;
402 case 0x10:
403 s->ar[index] = val & ~0x10;
404 break;
405 case 0x11:
406 s->ar[index] = val;
407 break;
408 case 0x12:
409 s->ar[index] = val & ~0xc0;
410 break;
411 case 0x13:
412 s->ar[index] = val & ~0xf0;
413 break;
414 case 0x14:
415 s->ar[index] = val & ~0xf0;
416 break;
417 default:
418 break;
419 }
420 }
421 s->ar_flip_flop ^= 1;
422 break;
423 case 0x3c2:
424 s->msr = val & ~0x10;
425 s->update_retrace_info(s);
426 break;
427 case 0x3c4:
428 s->sr_index = val & 7;
429 break;
430 case 0x3c5:
431 #ifdef DEBUG_VGA_REG
432 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
433 #endif
434 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
435 if (s->sr_index == 1) s->update_retrace_info(s);
436 break;
437 case 0x3c7:
438 s->dac_read_index = val;
439 s->dac_sub_index = 0;
440 s->dac_state = 3;
441 break;
442 case 0x3c8:
443 s->dac_write_index = val;
444 s->dac_sub_index = 0;
445 s->dac_state = 0;
446 break;
447 case 0x3c9:
448 s->dac_cache[s->dac_sub_index] = val;
449 if (++s->dac_sub_index == 3) {
450 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
451 s->dac_sub_index = 0;
452 s->dac_write_index++;
453 }
454 break;
455 case 0x3ce:
456 s->gr_index = val & 0x0f;
457 break;
458 case 0x3cf:
459 #ifdef DEBUG_VGA_REG
460 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
461 #endif
462 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
463 break;
464 case 0x3b4:
465 case 0x3d4:
466 s->cr_index = val;
467 break;
468 case 0x3b5:
469 case 0x3d5:
470 #ifdef DEBUG_VGA_REG
471 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
472 #endif
473 /* handle CR0-7 protection */
474 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
475 /* can always write bit 4 of CR7 */
476 if (s->cr_index == 7)
477 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
478 return;
479 }
480 switch(s->cr_index) {
481 case 0x01: /* horizontal display end */
482 case 0x07:
483 case 0x09:
484 case 0x0c:
485 case 0x0d:
486 case 0x12: /* vertical display end */
487 s->cr[s->cr_index] = val;
488 break;
489 default:
490 s->cr[s->cr_index] = val;
491 break;
492 }
493
494 switch(s->cr_index) {
495 case 0x00:
496 case 0x04:
497 case 0x05:
498 case 0x06:
499 case 0x07:
500 case 0x11:
501 case 0x17:
502 s->update_retrace_info(s);
503 break;
504 }
505 break;
506 case 0x3ba:
507 case 0x3da:
508 s->fcr = val & 0x10;
509 break;
510 }
511 }
512
513 #ifdef CONFIG_BOCHS_VBE
514 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
515 {
516 VGAState *s = opaque;
517 uint32_t val;
518 val = s->vbe_index;
519 return val;
520 }
521
522 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
523 {
524 VGAState *s = opaque;
525 uint32_t val;
526
527 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
528 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
529 switch(s->vbe_index) {
530 /* XXX: do not hardcode ? */
531 case VBE_DISPI_INDEX_XRES:
532 val = VBE_DISPI_MAX_XRES;
533 break;
534 case VBE_DISPI_INDEX_YRES:
535 val = VBE_DISPI_MAX_YRES;
536 break;
537 case VBE_DISPI_INDEX_BPP:
538 val = VBE_DISPI_MAX_BPP;
539 break;
540 default:
541 val = s->vbe_regs[s->vbe_index];
542 break;
543 }
544 } else {
545 val = s->vbe_regs[s->vbe_index];
546 }
547 } else {
548 val = 0;
549 }
550 #ifdef DEBUG_BOCHS_VBE
551 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
552 #endif
553 return val;
554 }
555
556 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
557 {
558 VGAState *s = opaque;
559 s->vbe_index = val;
560 }
561
562 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
563 {
564 VGAState *s = opaque;
565
566 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
567 #ifdef DEBUG_BOCHS_VBE
568 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
569 #endif
570 switch(s->vbe_index) {
571 case VBE_DISPI_INDEX_ID:
572 if (val == VBE_DISPI_ID0 ||
573 val == VBE_DISPI_ID1 ||
574 val == VBE_DISPI_ID2 ||
575 val == VBE_DISPI_ID3 ||
576 val == VBE_DISPI_ID4) {
577 s->vbe_regs[s->vbe_index] = val;
578 }
579 break;
580 case VBE_DISPI_INDEX_XRES:
581 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
582 s->vbe_regs[s->vbe_index] = val;
583 }
584 break;
585 case VBE_DISPI_INDEX_YRES:
586 if (val <= VBE_DISPI_MAX_YRES) {
587 s->vbe_regs[s->vbe_index] = val;
588 }
589 break;
590 case VBE_DISPI_INDEX_BPP:
591 if (val == 0)
592 val = 8;
593 if (val == 4 || val == 8 || val == 15 ||
594 val == 16 || val == 24 || val == 32) {
595 s->vbe_regs[s->vbe_index] = val;
596 }
597 break;
598 case VBE_DISPI_INDEX_BANK:
599 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
600 val &= (s->vbe_bank_mask >> 2);
601 } else {
602 val &= s->vbe_bank_mask;
603 }
604 s->vbe_regs[s->vbe_index] = val;
605 s->bank_offset = (val << 16);
606 break;
607 case VBE_DISPI_INDEX_ENABLE:
608 if ((val & VBE_DISPI_ENABLED) &&
609 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
610 int h, shift_control;
611
612 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
613 s->vbe_regs[VBE_DISPI_INDEX_XRES];
614 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
615 s->vbe_regs[VBE_DISPI_INDEX_YRES];
616 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
617 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
618
619 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
620 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
621 else
622 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
623 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
624 s->vbe_start_addr = 0;
625
626 /* clear the screen (should be done in BIOS) */
627 if (!(val & VBE_DISPI_NOCLEARMEM)) {
628 memset(s->vram_ptr, 0,
629 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
630 }
631
632 /* we initialize the VGA graphic mode (should be done
633 in BIOS) */
634 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
635 s->cr[0x17] |= 3; /* no CGA modes */
636 s->cr[0x13] = s->vbe_line_offset >> 3;
637 /* width */
638 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
639 /* height (only meaningful if < 1024) */
640 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
641 s->cr[0x12] = h;
642 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
643 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
644 /* line compare to 1023 */
645 s->cr[0x18] = 0xff;
646 s->cr[0x07] |= 0x10;
647 s->cr[0x09] |= 0x40;
648
649 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
650 shift_control = 0;
651 s->sr[0x01] &= ~8; /* no double line */
652 } else {
653 shift_control = 2;
654 s->sr[4] |= 0x08; /* set chain 4 mode */
655 s->sr[2] |= 0x0f; /* activate all planes */
656 }
657 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
658 s->cr[0x09] &= ~0x9f; /* no double scan */
659 } else {
660 /* XXX: the bios should do that */
661 s->bank_offset = 0;
662 }
663 s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
664 s->vbe_regs[s->vbe_index] = val;
665 break;
666 case VBE_DISPI_INDEX_VIRT_WIDTH:
667 {
668 int w, h, line_offset;
669
670 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
671 return;
672 w = val;
673 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
674 line_offset = w >> 1;
675 else
676 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
677 h = s->vram_size / line_offset;
678 /* XXX: support weird bochs semantics ? */
679 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
680 return;
681 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
682 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
683 s->vbe_line_offset = line_offset;
684 }
685 break;
686 case VBE_DISPI_INDEX_X_OFFSET:
687 case VBE_DISPI_INDEX_Y_OFFSET:
688 {
689 int x;
690 s->vbe_regs[s->vbe_index] = val;
691 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
692 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
693 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
694 s->vbe_start_addr += x >> 1;
695 else
696 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
697 s->vbe_start_addr >>= 2;
698 }
699 break;
700 default:
701 break;
702 }
703 }
704 }
705 #endif
706
707 /* called for accesses between 0xa0000 and 0xc0000 */
708 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
709 {
710 VGAState *s = opaque;
711 int memory_map_mode, plane;
712 uint32_t ret;
713
714 /* convert to VGA memory offset */
715 memory_map_mode = (s->gr[6] >> 2) & 3;
716 addr &= 0x1ffff;
717 switch(memory_map_mode) {
718 case 0:
719 break;
720 case 1:
721 if (addr >= 0x10000)
722 return 0xff;
723 addr += s->bank_offset;
724 break;
725 case 2:
726 addr -= 0x10000;
727 if (addr >= 0x8000)
728 return 0xff;
729 break;
730 default:
731 case 3:
732 addr -= 0x18000;
733 if (addr >= 0x8000)
734 return 0xff;
735 break;
736 }
737
738 if (s->sr[4] & 0x08) {
739 /* chain 4 mode : simplest access */
740 ret = s->vram_ptr[addr];
741 } else if (s->gr[5] & 0x10) {
742 /* odd/even mode (aka text mode mapping) */
743 plane = (s->gr[4] & 2) | (addr & 1);
744 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
745 } else {
746 /* standard VGA latched access */
747 s->latch = ((uint32_t *)s->vram_ptr)[addr];
748
749 if (!(s->gr[5] & 0x08)) {
750 /* read mode 0 */
751 plane = s->gr[4];
752 ret = GET_PLANE(s->latch, plane);
753 } else {
754 /* read mode 1 */
755 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
756 ret |= ret >> 16;
757 ret |= ret >> 8;
758 ret = (~ret) & 0xff;
759 }
760 }
761 return ret;
762 }
763
764 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
765 {
766 uint32_t v;
767 #ifdef TARGET_WORDS_BIGENDIAN
768 v = vga_mem_readb(opaque, addr) << 8;
769 v |= vga_mem_readb(opaque, addr + 1);
770 #else
771 v = vga_mem_readb(opaque, addr);
772 v |= vga_mem_readb(opaque, addr + 1) << 8;
773 #endif
774 return v;
775 }
776
777 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
778 {
779 uint32_t v;
780 #ifdef TARGET_WORDS_BIGENDIAN
781 v = vga_mem_readb(opaque, addr) << 24;
782 v |= vga_mem_readb(opaque, addr + 1) << 16;
783 v |= vga_mem_readb(opaque, addr + 2) << 8;
784 v |= vga_mem_readb(opaque, addr + 3);
785 #else
786 v = vga_mem_readb(opaque, addr);
787 v |= vga_mem_readb(opaque, addr + 1) << 8;
788 v |= vga_mem_readb(opaque, addr + 2) << 16;
789 v |= vga_mem_readb(opaque, addr + 3) << 24;
790 #endif
791 return v;
792 }
793
794 /* called for accesses between 0xa0000 and 0xc0000 */
795 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
796 {
797 VGAState *s = opaque;
798 int memory_map_mode, plane, write_mode, b, func_select, mask;
799 uint32_t write_mask, bit_mask, set_mask;
800
801 #ifdef DEBUG_VGA_MEM
802 printf("vga: [0x%x] = 0x%02x\n", addr, val);
803 #endif
804 /* convert to VGA memory offset */
805 memory_map_mode = (s->gr[6] >> 2) & 3;
806 addr &= 0x1ffff;
807 switch(memory_map_mode) {
808 case 0:
809 break;
810 case 1:
811 if (addr >= 0x10000)
812 return;
813 addr += s->bank_offset;
814 break;
815 case 2:
816 addr -= 0x10000;
817 if (addr >= 0x8000)
818 return;
819 break;
820 default:
821 case 3:
822 addr -= 0x18000;
823 if (addr >= 0x8000)
824 return;
825 break;
826 }
827
828 if (s->sr[4] & 0x08) {
829 /* chain 4 mode : simplest access */
830 plane = addr & 3;
831 mask = (1 << plane);
832 if (s->sr[2] & mask) {
833 s->vram_ptr[addr] = val;
834 #ifdef DEBUG_VGA_MEM
835 printf("vga: chain4: [0x%x]\n", addr);
836 #endif
837 s->plane_updated |= mask; /* only used to detect font change */
838 cpu_physical_memory_set_dirty(s->vram_offset + addr);
839 }
840 } else if (s->gr[5] & 0x10) {
841 /* odd/even mode (aka text mode mapping) */
842 plane = (s->gr[4] & 2) | (addr & 1);
843 mask = (1 << plane);
844 if (s->sr[2] & mask) {
845 addr = ((addr & ~1) << 1) | plane;
846 s->vram_ptr[addr] = val;
847 #ifdef DEBUG_VGA_MEM
848 printf("vga: odd/even: [0x%x]\n", addr);
849 #endif
850 s->plane_updated |= mask; /* only used to detect font change */
851 cpu_physical_memory_set_dirty(s->vram_offset + addr);
852 }
853 } else {
854 /* standard VGA latched access */
855 write_mode = s->gr[5] & 3;
856 switch(write_mode) {
857 default:
858 case 0:
859 /* rotate */
860 b = s->gr[3] & 7;
861 val = ((val >> b) | (val << (8 - b))) & 0xff;
862 val |= val << 8;
863 val |= val << 16;
864
865 /* apply set/reset mask */
866 set_mask = mask16[s->gr[1]];
867 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
868 bit_mask = s->gr[8];
869 break;
870 case 1:
871 val = s->latch;
872 goto do_write;
873 case 2:
874 val = mask16[val & 0x0f];
875 bit_mask = s->gr[8];
876 break;
877 case 3:
878 /* rotate */
879 b = s->gr[3] & 7;
880 val = (val >> b) | (val << (8 - b));
881
882 bit_mask = s->gr[8] & val;
883 val = mask16[s->gr[0]];
884 break;
885 }
886
887 /* apply logical operation */
888 func_select = s->gr[3] >> 3;
889 switch(func_select) {
890 case 0:
891 default:
892 /* nothing to do */
893 break;
894 case 1:
895 /* and */
896 val &= s->latch;
897 break;
898 case 2:
899 /* or */
900 val |= s->latch;
901 break;
902 case 3:
903 /* xor */
904 val ^= s->latch;
905 break;
906 }
907
908 /* apply bit mask */
909 bit_mask |= bit_mask << 8;
910 bit_mask |= bit_mask << 16;
911 val = (val & bit_mask) | (s->latch & ~bit_mask);
912
913 do_write:
914 /* mask data according to sr[2] */
915 mask = s->sr[2];
916 s->plane_updated |= mask; /* only used to detect font change */
917 write_mask = mask16[mask];
918 ((uint32_t *)s->vram_ptr)[addr] =
919 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
920 (val & write_mask);
921 #ifdef DEBUG_VGA_MEM
922 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
923 addr * 4, write_mask, val);
924 #endif
925 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
926 }
927 }
928
929 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
930 {
931 #ifdef TARGET_WORDS_BIGENDIAN
932 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
933 vga_mem_writeb(opaque, addr + 1, val & 0xff);
934 #else
935 vga_mem_writeb(opaque, addr, val & 0xff);
936 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
937 #endif
938 }
939
940 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
941 {
942 #ifdef TARGET_WORDS_BIGENDIAN
943 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
944 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
945 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
946 vga_mem_writeb(opaque, addr + 3, val & 0xff);
947 #else
948 vga_mem_writeb(opaque, addr, val & 0xff);
949 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
950 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
951 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
952 #endif
953 }
954
955 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
956 const uint8_t *font_ptr, int h,
957 uint32_t fgcol, uint32_t bgcol);
958 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
959 const uint8_t *font_ptr, int h,
960 uint32_t fgcol, uint32_t bgcol, int dup9);
961 typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
962 const uint8_t *s, int width);
963
964 #define DEPTH 8
965 #include "vga_template.h"
966
967 #define DEPTH 15
968 #include "vga_template.h"
969
970 #define BGR_FORMAT
971 #define DEPTH 15
972 #include "vga_template.h"
973
974 #define DEPTH 16
975 #include "vga_template.h"
976
977 #define BGR_FORMAT
978 #define DEPTH 16
979 #include "vga_template.h"
980
981 #define DEPTH 32
982 #include "vga_template.h"
983
984 #define BGR_FORMAT
985 #define DEPTH 32
986 #include "vga_template.h"
987
988 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
989 {
990 unsigned int col;
991 col = rgb_to_pixel8(r, g, b);
992 col |= col << 8;
993 col |= col << 16;
994 return col;
995 }
996
997 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
998 {
999 unsigned int col;
1000 col = rgb_to_pixel15(r, g, b);
1001 col |= col << 16;
1002 return col;
1003 }
1004
1005 static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g,
1006 unsigned int b)
1007 {
1008 unsigned int col;
1009 col = rgb_to_pixel15bgr(r, g, b);
1010 col |= col << 16;
1011 return col;
1012 }
1013
1014 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
1015 {
1016 unsigned int col;
1017 col = rgb_to_pixel16(r, g, b);
1018 col |= col << 16;
1019 return col;
1020 }
1021
1022 static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g,
1023 unsigned int b)
1024 {
1025 unsigned int col;
1026 col = rgb_to_pixel16bgr(r, g, b);
1027 col |= col << 16;
1028 return col;
1029 }
1030
1031 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
1032 {
1033 unsigned int col;
1034 col = rgb_to_pixel32(r, g, b);
1035 return col;
1036 }
1037
1038 static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
1039 {
1040 unsigned int col;
1041 col = rgb_to_pixel32bgr(r, g, b);
1042 return col;
1043 }
1044
1045 /* return true if the palette was modified */
1046 static int update_palette16(VGAState *s)
1047 {
1048 int full_update, i;
1049 uint32_t v, col, *palette;
1050
1051 full_update = 0;
1052 palette = s->last_palette;
1053 for(i = 0; i < 16; i++) {
1054 v = s->ar[i];
1055 if (s->ar[0x10] & 0x80)
1056 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
1057 else
1058 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
1059 v = v * 3;
1060 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1061 c6_to_8(s->palette[v + 1]),
1062 c6_to_8(s->palette[v + 2]));
1063 if (col != palette[i]) {
1064 full_update = 1;
1065 palette[i] = col;
1066 }
1067 }
1068 return full_update;
1069 }
1070
1071 /* return true if the palette was modified */
1072 static int update_palette256(VGAState *s)
1073 {
1074 int full_update, i;
1075 uint32_t v, col, *palette;
1076
1077 full_update = 0;
1078 palette = s->last_palette;
1079 v = 0;
1080 for(i = 0; i < 256; i++) {
1081 if (s->dac_8bit) {
1082 col = s->rgb_to_pixel(s->palette[v],
1083 s->palette[v + 1],
1084 s->palette[v + 2]);
1085 } else {
1086 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1087 c6_to_8(s->palette[v + 1]),
1088 c6_to_8(s->palette[v + 2]));
1089 }
1090 if (col != palette[i]) {
1091 full_update = 1;
1092 palette[i] = col;
1093 }
1094 v += 3;
1095 }
1096 return full_update;
1097 }
1098
1099 static void vga_get_offsets(VGAState *s,
1100 uint32_t *pline_offset,
1101 uint32_t *pstart_addr,
1102 uint32_t *pline_compare)
1103 {
1104 uint32_t start_addr, line_offset, line_compare;
1105 #ifdef CONFIG_BOCHS_VBE
1106 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1107 line_offset = s->vbe_line_offset;
1108 start_addr = s->vbe_start_addr;
1109 line_compare = 65535;
1110 } else
1111 #endif
1112 {
1113 /* compute line_offset in bytes */
1114 line_offset = s->cr[0x13];
1115 line_offset <<= 3;
1116
1117 /* starting address */
1118 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
1119
1120 /* line compare */
1121 line_compare = s->cr[0x18] |
1122 ((s->cr[0x07] & 0x10) << 4) |
1123 ((s->cr[0x09] & 0x40) << 3);
1124 }
1125 *pline_offset = line_offset;
1126 *pstart_addr = start_addr;
1127 *pline_compare = line_compare;
1128 }
1129
1130 /* update start_addr and line_offset. Return TRUE if modified */
1131 static int update_basic_params(VGAState *s)
1132 {
1133 int full_update;
1134 uint32_t start_addr, line_offset, line_compare;
1135
1136 full_update = 0;
1137
1138 s->get_offsets(s, &line_offset, &start_addr, &line_compare);
1139
1140 if (line_offset != s->line_offset ||
1141 start_addr != s->start_addr ||
1142 line_compare != s->line_compare) {
1143 s->line_offset = line_offset;
1144 s->start_addr = start_addr;
1145 s->line_compare = line_compare;
1146 full_update = 1;
1147 }
1148 return full_update;
1149 }
1150
1151 #define NB_DEPTHS 7
1152
1153 static inline int get_depth_index(DisplayState *s)
1154 {
1155 switch(ds_get_bits_per_pixel(s)) {
1156 default:
1157 case 8:
1158 return 0;
1159 case 15:
1160 return 1;
1161 case 16:
1162 return 2;
1163 case 32:
1164 return 3;
1165 }
1166 }
1167
1168 static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1169 vga_draw_glyph8_8,
1170 vga_draw_glyph8_16,
1171 vga_draw_glyph8_16,
1172 vga_draw_glyph8_32,
1173 vga_draw_glyph8_32,
1174 vga_draw_glyph8_16,
1175 vga_draw_glyph8_16,
1176 };
1177
1178 static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1179 vga_draw_glyph16_8,
1180 vga_draw_glyph16_16,
1181 vga_draw_glyph16_16,
1182 vga_draw_glyph16_32,
1183 vga_draw_glyph16_32,
1184 vga_draw_glyph16_16,
1185 vga_draw_glyph16_16,
1186 };
1187
1188 static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
1189 vga_draw_glyph9_8,
1190 vga_draw_glyph9_16,
1191 vga_draw_glyph9_16,
1192 vga_draw_glyph9_32,
1193 vga_draw_glyph9_32,
1194 vga_draw_glyph9_16,
1195 vga_draw_glyph9_16,
1196 };
1197
1198 static const uint8_t cursor_glyph[32 * 4] = {
1199 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1200 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1201 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1202 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1203 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1204 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1205 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1206 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1207 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1208 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1209 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1210 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1211 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1212 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1213 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1214 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1215 };
1216
1217 static void vga_get_text_resolution(VGAState *s, int *pwidth, int *pheight,
1218 int *pcwidth, int *pcheight)
1219 {
1220 int width, cwidth, height, cheight;
1221
1222 /* total width & height */
1223 cheight = (s->cr[9] & 0x1f) + 1;
1224 cwidth = 8;
1225 if (!(s->sr[1] & 0x01))
1226 cwidth = 9;
1227 if (s->sr[1] & 0x08)
1228 cwidth = 16; /* NOTE: no 18 pixel wide */
1229 width = (s->cr[0x01] + 1);
1230 if (s->cr[0x06] == 100) {
1231 /* ugly hack for CGA 160x100x16 - explain me the logic */
1232 height = 100;
1233 } else {
1234 height = s->cr[0x12] |
1235 ((s->cr[0x07] & 0x02) << 7) |
1236 ((s->cr[0x07] & 0x40) << 3);
1237 height = (height + 1) / cheight;
1238 }
1239
1240 *pwidth = width;
1241 *pheight = height;
1242 *pcwidth = cwidth;
1243 *pcheight = cheight;
1244 }
1245
1246 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1247
1248 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1249 rgb_to_pixel8_dup,
1250 rgb_to_pixel15_dup,
1251 rgb_to_pixel16_dup,
1252 rgb_to_pixel32_dup,
1253 rgb_to_pixel32bgr_dup,
1254 rgb_to_pixel15bgr_dup,
1255 rgb_to_pixel16bgr_dup,
1256 };
1257
1258 /*
1259 * Text mode update
1260 * Missing:
1261 * - double scan
1262 * - double width
1263 * - underline
1264 * - flashing
1265 */
1266 static void vga_draw_text(VGAState *s, int full_update)
1267 {
1268 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1269 int cx_min, cx_max, linesize, x_incr;
1270 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1271 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1272 const uint8_t *font_ptr, *font_base[2];
1273 int dup9, line_offset, depth_index;
1274 uint32_t *palette;
1275 uint32_t *ch_attr_ptr;
1276 vga_draw_glyph8_func *vga_draw_glyph8;
1277 vga_draw_glyph9_func *vga_draw_glyph9;
1278
1279 vga_dirty_log_stop(s);
1280
1281 /* compute font data address (in plane 2) */
1282 v = s->sr[3];
1283 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1284 if (offset != s->font_offsets[0]) {
1285 s->font_offsets[0] = offset;
1286 full_update = 1;
1287 }
1288 font_base[0] = s->vram_ptr + offset;
1289
1290 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1291 font_base[1] = s->vram_ptr + offset;
1292 if (offset != s->font_offsets[1]) {
1293 s->font_offsets[1] = offset;
1294 full_update = 1;
1295 }
1296 if (s->plane_updated & (1 << 2)) {
1297 /* if the plane 2 was modified since the last display, it
1298 indicates the font may have been modified */
1299 s->plane_updated = 0;
1300 full_update = 1;
1301 }
1302 full_update |= update_basic_params(s);
1303
1304 line_offset = s->line_offset;
1305 s1 = s->vram_ptr + (s->start_addr * 4);
1306
1307 vga_get_text_resolution(s, &width, &height, &cw, &cheight);
1308 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1309 if ((height * width) > CH_ATTR_SIZE) {
1310 /* better than nothing: exit if transient size is too big */
1311 return;
1312 }
1313
1314 if (width != s->last_width || height != s->last_height ||
1315 cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
1316 s->last_scr_width = width * cw;
1317 s->last_scr_height = height * cheight;
1318 qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height);
1319 s->last_depth = 0;
1320 s->last_width = width;
1321 s->last_height = height;
1322 s->last_ch = cheight;
1323 s->last_cw = cw;
1324 full_update = 1;
1325 }
1326 s->rgb_to_pixel =
1327 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1328 full_update |= update_palette16(s);
1329 palette = s->last_palette;
1330 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1331
1332 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1333 if (cursor_offset != s->cursor_offset ||
1334 s->cr[0xa] != s->cursor_start ||
1335 s->cr[0xb] != s->cursor_end) {
1336 /* if the cursor position changed, we update the old and new
1337 chars */
1338 if (s->cursor_offset < CH_ATTR_SIZE)
1339 s->last_ch_attr[s->cursor_offset] = -1;
1340 if (cursor_offset < CH_ATTR_SIZE)
1341 s->last_ch_attr[cursor_offset] = -1;
1342 s->cursor_offset = cursor_offset;
1343 s->cursor_start = s->cr[0xa];
1344 s->cursor_end = s->cr[0xb];
1345 }
1346 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1347
1348 depth_index = get_depth_index(s->ds);
1349 if (cw == 16)
1350 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1351 else
1352 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1353 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1354
1355 dest = ds_get_data(s->ds);
1356 linesize = ds_get_linesize(s->ds);
1357 ch_attr_ptr = s->last_ch_attr;
1358 for(cy = 0; cy < height; cy++) {
1359 d1 = dest;
1360 src = s1;
1361 cx_min = width;
1362 cx_max = -1;
1363 for(cx = 0; cx < width; cx++) {
1364 ch_attr = *(uint16_t *)src;
1365 if (full_update || ch_attr != *ch_attr_ptr) {
1366 if (cx < cx_min)
1367 cx_min = cx;
1368 if (cx > cx_max)
1369 cx_max = cx;
1370 *ch_attr_ptr = ch_attr;
1371 #ifdef WORDS_BIGENDIAN
1372 ch = ch_attr >> 8;
1373 cattr = ch_attr & 0xff;
1374 #else
1375 ch = ch_attr & 0xff;
1376 cattr = ch_attr >> 8;
1377 #endif
1378 font_ptr = font_base[(cattr >> 3) & 1];
1379 font_ptr += 32 * 4 * ch;
1380 bgcol = palette[cattr >> 4];
1381 fgcol = palette[cattr & 0x0f];
1382 if (cw != 9) {
1383 vga_draw_glyph8(d1, linesize,
1384 font_ptr, cheight, fgcol, bgcol);
1385 } else {
1386 dup9 = 0;
1387 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1388 dup9 = 1;
1389 vga_draw_glyph9(d1, linesize,
1390 font_ptr, cheight, fgcol, bgcol, dup9);
1391 }
1392 if (src == cursor_ptr &&
1393 !(s->cr[0x0a] & 0x20)) {
1394 int line_start, line_last, h;
1395 /* draw the cursor */
1396 line_start = s->cr[0x0a] & 0x1f;
1397 line_last = s->cr[0x0b] & 0x1f;
1398 /* XXX: check that */
1399 if (line_last > cheight - 1)
1400 line_last = cheight - 1;
1401 if (line_last >= line_start && line_start < cheight) {
1402 h = line_last - line_start + 1;
1403 d = d1 + linesize * line_start;
1404 if (cw != 9) {
1405 vga_draw_glyph8(d, linesize,
1406 cursor_glyph, h, fgcol, bgcol);
1407 } else {
1408 vga_draw_glyph9(d, linesize,
1409 cursor_glyph, h, fgcol, bgcol, 1);
1410 }
1411 }
1412 }
1413 }
1414 d1 += x_incr;
1415 src += 4;
1416 ch_attr_ptr++;
1417 }
1418 if (cx_max != -1) {
1419 dpy_update(s->ds, cx_min * cw, cy * cheight,
1420 (cx_max - cx_min + 1) * cw, cheight);
1421 }
1422 dest += linesize * cheight;
1423 s1 += line_offset;
1424 }
1425 }
1426
1427 enum {
1428 VGA_DRAW_LINE2,
1429 VGA_DRAW_LINE2D2,
1430 VGA_DRAW_LINE4,
1431 VGA_DRAW_LINE4D2,
1432 VGA_DRAW_LINE8D2,
1433 VGA_DRAW_LINE8,
1434 VGA_DRAW_LINE15,
1435 VGA_DRAW_LINE16,
1436 VGA_DRAW_LINE24,
1437 VGA_DRAW_LINE32,
1438 VGA_DRAW_LINE_NB,
1439 };
1440
1441 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1442 vga_draw_line2_8,
1443 vga_draw_line2_16,
1444 vga_draw_line2_16,
1445 vga_draw_line2_32,
1446 vga_draw_line2_32,
1447 vga_draw_line2_16,
1448 vga_draw_line2_16,
1449
1450 vga_draw_line2d2_8,
1451 vga_draw_line2d2_16,
1452 vga_draw_line2d2_16,
1453 vga_draw_line2d2_32,
1454 vga_draw_line2d2_32,
1455 vga_draw_line2d2_16,
1456 vga_draw_line2d2_16,
1457
1458 vga_draw_line4_8,
1459 vga_draw_line4_16,
1460 vga_draw_line4_16,
1461 vga_draw_line4_32,
1462 vga_draw_line4_32,
1463 vga_draw_line4_16,
1464 vga_draw_line4_16,
1465
1466 vga_draw_line4d2_8,
1467 vga_draw_line4d2_16,
1468 vga_draw_line4d2_16,
1469 vga_draw_line4d2_32,
1470 vga_draw_line4d2_32,
1471 vga_draw_line4d2_16,
1472 vga_draw_line4d2_16,
1473
1474 vga_draw_line8d2_8,
1475 vga_draw_line8d2_16,
1476 vga_draw_line8d2_16,
1477 vga_draw_line8d2_32,
1478 vga_draw_line8d2_32,
1479 vga_draw_line8d2_16,
1480 vga_draw_line8d2_16,
1481
1482 vga_draw_line8_8,
1483 vga_draw_line8_16,
1484 vga_draw_line8_16,
1485 vga_draw_line8_32,
1486 vga_draw_line8_32,
1487 vga_draw_line8_16,
1488 vga_draw_line8_16,
1489
1490 vga_draw_line15_8,
1491 vga_draw_line15_15,
1492 vga_draw_line15_16,
1493 vga_draw_line15_32,
1494 vga_draw_line15_32bgr,
1495 vga_draw_line15_15bgr,
1496 vga_draw_line15_16bgr,
1497
1498 vga_draw_line16_8,
1499 vga_draw_line16_15,
1500 vga_draw_line16_16,
1501 vga_draw_line16_32,
1502 vga_draw_line16_32bgr,
1503 vga_draw_line16_15bgr,
1504 vga_draw_line16_16bgr,
1505
1506 vga_draw_line24_8,
1507 vga_draw_line24_15,
1508 vga_draw_line24_16,
1509 vga_draw_line24_32,
1510 vga_draw_line24_32bgr,
1511 vga_draw_line24_15bgr,
1512 vga_draw_line24_16bgr,
1513
1514 vga_draw_line32_8,
1515 vga_draw_line32_15,
1516 vga_draw_line32_16,
1517 vga_draw_line32_32,
1518 vga_draw_line32_32bgr,
1519 vga_draw_line32_15bgr,
1520 vga_draw_line32_16bgr,
1521 };
1522
1523 static int vga_get_bpp(VGAState *s)
1524 {
1525 int ret;
1526 #ifdef CONFIG_BOCHS_VBE
1527 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1528 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1529 } else
1530 #endif
1531 {
1532 ret = 0;
1533 }
1534 return ret;
1535 }
1536
1537 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1538 {
1539 int width, height;
1540
1541 #ifdef CONFIG_BOCHS_VBE
1542 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1543 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1544 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1545 } else
1546 #endif
1547 {
1548 width = (s->cr[0x01] + 1) * 8;
1549 height = s->cr[0x12] |
1550 ((s->cr[0x07] & 0x02) << 7) |
1551 ((s->cr[0x07] & 0x40) << 3);
1552 height = (height + 1);
1553 }
1554 *pwidth = width;
1555 *pheight = height;
1556 }
1557
1558 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1559 {
1560 int y;
1561 if (y1 >= VGA_MAX_HEIGHT)
1562 return;
1563 if (y2 >= VGA_MAX_HEIGHT)
1564 y2 = VGA_MAX_HEIGHT;
1565 for(y = y1; y < y2; y++) {
1566 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1567 }
1568 }
1569
1570 static void vga_sync_dirty_bitmap(VGAState *s)
1571 {
1572 if (s->map_addr)
1573 cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end);
1574
1575 if (s->lfb_vram_mapped) {
1576 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000);
1577 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000);
1578 }
1579 vga_dirty_log_start(s);
1580 }
1581
1582 /*
1583 * graphic modes
1584 */
1585 static void vga_draw_graphic(VGAState *s, int full_update)
1586 {
1587 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask, depth;
1588 int width, height, shift_control, line_offset, page0, page1, bwidth, bits;
1589 int disp_width, multi_scan, multi_run;
1590 uint8_t *d;
1591 uint32_t v, addr1, addr;
1592 vga_draw_line_func *vga_draw_line;
1593
1594 full_update |= update_basic_params(s);
1595
1596 if (!full_update)
1597 vga_sync_dirty_bitmap(s);
1598
1599 s->get_resolution(s, &width, &height);
1600 disp_width = width;
1601
1602 shift_control = (s->gr[0x05] >> 5) & 3;
1603 double_scan = (s->cr[0x09] >> 7);
1604 if (shift_control != 1) {
1605 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1606 } else {
1607 /* in CGA modes, multi_scan is ignored */
1608 /* XXX: is it correct ? */
1609 multi_scan = double_scan;
1610 }
1611 multi_run = multi_scan;
1612 if (shift_control != s->shift_control ||
1613 double_scan != s->double_scan) {
1614 full_update = 1;
1615 s->shift_control = shift_control;
1616 s->double_scan = double_scan;
1617 }
1618
1619 depth = s->get_bpp(s);
1620 if (s->line_offset != s->last_line_offset ||
1621 disp_width != s->last_width ||
1622 height != s->last_height ||
1623 s->last_depth != depth) {
1624 #if defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
1625 if (depth == 16 || depth == 32) {
1626 #else
1627 if (depth == 32) {
1628 #endif
1629 if (is_graphic_console()) {
1630 qemu_free_displaysurface(s->ds->surface);
1631 s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth,
1632 s->line_offset,
1633 s->vram_ptr + (s->start_addr * 4));
1634 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
1635 s->ds->surface->pf = qemu_different_endianness_pixelformat(depth);
1636 #endif
1637 dpy_resize(s->ds);
1638 } else {
1639 qemu_console_resize(s->ds, disp_width, height);
1640 }
1641 } else {
1642 qemu_console_resize(s->ds, disp_width, height);
1643 }
1644 s->last_scr_width = disp_width;
1645 s->last_scr_height = height;
1646 s->last_width = disp_width;
1647 s->last_height = height;
1648 s->last_line_offset = s->line_offset;
1649 s->last_depth = depth;
1650 full_update = 1;
1651 } else if (is_graphic_console() && is_buffer_shared(s->ds->surface) &&
1652 (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
1653 s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
1654 dpy_setdata(s->ds);
1655 }
1656
1657 s->rgb_to_pixel =
1658 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1659
1660 if (shift_control == 0) {
1661 full_update |= update_palette16(s);
1662 if (s->sr[0x01] & 8) {
1663 v = VGA_DRAW_LINE4D2;
1664 disp_width <<= 1;
1665 } else {
1666 v = VGA_DRAW_LINE4;
1667 }
1668 bits = 4;
1669 } else if (shift_control == 1) {
1670 full_update |= update_palette16(s);
1671 if (s->sr[0x01] & 8) {
1672 v = VGA_DRAW_LINE2D2;
1673 disp_width <<= 1;
1674 } else {
1675 v = VGA_DRAW_LINE2;
1676 }
1677 bits = 4;
1678 } else {
1679 switch(s->get_bpp(s)) {
1680 default:
1681 case 0:
1682 full_update |= update_palette256(s);
1683 v = VGA_DRAW_LINE8D2;
1684 bits = 4;
1685 break;
1686 case 8:
1687 full_update |= update_palette256(s);
1688 v = VGA_DRAW_LINE8;
1689 bits = 8;
1690 break;
1691 case 15:
1692 v = VGA_DRAW_LINE15;
1693 bits = 16;
1694 break;
1695 case 16:
1696 v = VGA_DRAW_LINE16;
1697 bits = 16;
1698 break;
1699 case 24:
1700 v = VGA_DRAW_LINE24;
1701 bits = 24;
1702 break;
1703 case 32:
1704 v = VGA_DRAW_LINE32;
1705 bits = 32;
1706 break;
1707 }
1708 }
1709 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1710
1711 if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
1712 s->cursor_invalidate(s);
1713
1714 line_offset = s->line_offset;
1715 #if 0
1716 printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
1717 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1718 #endif
1719 addr1 = (s->start_addr * 4);
1720 bwidth = (width * bits + 7) / 8;
1721 y_start = -1;
1722 page_min = 0x7fffffff;
1723 page_max = -1;
1724 d = ds_get_data(s->ds);
1725 linesize = ds_get_linesize(s->ds);
1726 y1 = 0;
1727 for(y = 0; y < height; y++) {
1728 addr = addr1;
1729 if (!(s->cr[0x17] & 1)) {
1730 int shift;
1731 /* CGA compatibility handling */
1732 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1733 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1734 }
1735 if (!(s->cr[0x17] & 2)) {
1736 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1737 }
1738 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1739 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1740 update = full_update |
1741 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1742 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1743 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1744 /* if wide line, can use another page */
1745 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1746 VGA_DIRTY_FLAG);
1747 }
1748 /* explicit invalidation for the hardware cursor */
1749 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1750 if (update) {
1751 if (y_start < 0)
1752 y_start = y;
1753 if (page0 < page_min)
1754 page_min = page0;
1755 if (page1 > page_max)
1756 page_max = page1;
1757 if (!(is_buffer_shared(s->ds->surface))) {
1758 vga_draw_line(s, d, s->vram_ptr + addr, width);
1759 if (s->cursor_draw_line)
1760 s->cursor_draw_line(s, d, y);
1761 }
1762 } else {
1763 if (y_start >= 0) {
1764 /* flush to display */
1765 dpy_update(s->ds, 0, y_start,
1766 disp_width, y - y_start);
1767 y_start = -1;
1768 }
1769 }
1770 if (!multi_run) {
1771 mask = (s->cr[0x17] & 3) ^ 3;
1772 if ((y1 & mask) == mask)
1773 addr1 += line_offset;
1774 y1++;
1775 multi_run = multi_scan;
1776 } else {
1777 multi_run--;
1778 }
1779 /* line compare acts on the displayed lines */
1780 if (y == s->line_compare)
1781 addr1 = 0;
1782 d += linesize;
1783 }
1784 if (y_start >= 0) {
1785 /* flush to display */
1786 dpy_update(s->ds, 0, y_start,
1787 disp_width, y - y_start);
1788 }
1789 /* reset modified pages */
1790 if (page_max != -1) {
1791 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1792 VGA_DIRTY_FLAG);
1793 }
1794 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1795 }
1796
1797 static void vga_draw_blank(VGAState *s, int full_update)
1798 {
1799 int i, w, val;
1800 uint8_t *d;
1801
1802 if (!full_update)
1803 return;
1804 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1805 return;
1806 vga_dirty_log_stop(s);
1807
1808 s->rgb_to_pixel =
1809 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1810 if (ds_get_bits_per_pixel(s->ds) == 8)
1811 val = s->rgb_to_pixel(0, 0, 0);
1812 else
1813 val = 0;
1814 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1815 d = ds_get_data(s->ds);
1816 for(i = 0; i < s->last_scr_height; i++) {
1817 memset(d, val, w);
1818 d += ds_get_linesize(s->ds);
1819 }
1820 dpy_update(s->ds, 0, 0,
1821 s->last_scr_width, s->last_scr_height);
1822 }
1823
1824 #define GMODE_TEXT 0
1825 #define GMODE_GRAPH 1
1826 #define GMODE_BLANK 2
1827
1828 static void vga_update_display(void *opaque)
1829 {
1830 VGAState *s = (VGAState *)opaque;
1831 int full_update, graphic_mode;
1832
1833 if (ds_get_bits_per_pixel(s->ds) == 0) {
1834 /* nothing to do */
1835 } else {
1836 full_update = 0;
1837 if (!(s->ar_index & 0x20)) {
1838 graphic_mode = GMODE_BLANK;
1839 } else {
1840 graphic_mode = s->gr[6] & 1;
1841 }
1842 if (graphic_mode != s->graphic_mode) {
1843 s->graphic_mode = graphic_mode;
1844 full_update = 1;
1845 }
1846 switch(graphic_mode) {
1847 case GMODE_TEXT:
1848 vga_draw_text(s, full_update);
1849 break;
1850 case GMODE_GRAPH:
1851 vga_draw_graphic(s, full_update);
1852 break;
1853 case GMODE_BLANK:
1854 default:
1855 vga_draw_blank(s, full_update);
1856 break;
1857 }
1858 }
1859 }
1860
1861 /* force a full display refresh */
1862 static void vga_invalidate_display(void *opaque)
1863 {
1864 VGAState *s = (VGAState *)opaque;
1865
1866 s->last_width = -1;
1867 s->last_height = -1;
1868 }
1869
1870 void vga_reset(void *opaque)
1871 {
1872 VGAState *s = (VGAState *) opaque;
1873
1874 s->lfb_addr = 0;
1875 s->lfb_end = 0;
1876 s->map_addr = 0;
1877 s->map_end = 0;
1878 s->lfb_vram_mapped = 0;
1879 s->bios_offset = 0;
1880 s->bios_size = 0;
1881 s->sr_index = 0;
1882 memset(s->sr, '\0', sizeof(s->sr));
1883 s->gr_index = 0;
1884 memset(s->gr, '\0', sizeof(s->gr));
1885 s->ar_index = 0;
1886 memset(s->ar, '\0', sizeof(s->ar));
1887 s->ar_flip_flop = 0;
1888 s->cr_index = 0;
1889 memset(s->cr, '\0', sizeof(s->cr));
1890 s->msr = 0;
1891 s->fcr = 0;
1892 s->st00 = 0;
1893 s->st01 = 0;
1894 s->dac_state = 0;
1895 s->dac_sub_index = 0;
1896 s->dac_read_index = 0;
1897 s->dac_write_index = 0;
1898 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1899 s->dac_8bit = 0;
1900 memset(s->palette, '\0', sizeof(s->palette));
1901 s->bank_offset = 0;
1902 #ifdef CONFIG_BOCHS_VBE
1903 s->vbe_index = 0;
1904 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1905 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1906 s->vbe_start_addr = 0;
1907 s->vbe_line_offset = 0;
1908 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1909 #endif
1910 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1911 s->graphic_mode = -1; /* force full update */
1912 s->shift_control = 0;
1913 s->double_scan = 0;
1914 s->line_offset = 0;
1915 s->line_compare = 0;
1916 s->start_addr = 0;
1917 s->plane_updated = 0;
1918 s->last_cw = 0;
1919 s->last_ch = 0;
1920 s->last_width = 0;
1921 s->last_height = 0;
1922 s->last_scr_width = 0;
1923 s->last_scr_height = 0;
1924 s->cursor_start = 0;
1925 s->cursor_end = 0;
1926 s->cursor_offset = 0;
1927 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1928 memset(s->last_palette, '\0', sizeof(s->last_palette));
1929 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1930 switch (vga_retrace_method) {
1931 case VGA_RETRACE_DUMB:
1932 break;
1933 case VGA_RETRACE_PRECISE:
1934 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1935 break;
1936 }
1937 }
1938
1939 #define TEXTMODE_X(x) ((x) % width)
1940 #define TEXTMODE_Y(x) ((x) / width)
1941 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1942 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1943 /* relay text rendering to the display driver
1944 * instead of doing a full vga_update_display() */
1945 static void vga_update_text(void *opaque, console_ch_t *chardata)
1946 {
1947 VGAState *s = (VGAState *) opaque;
1948 int graphic_mode, i, cursor_offset, cursor_visible;
1949 int cw, cheight, width, height, size, c_min, c_max;
1950 uint32_t *src;
1951 console_ch_t *dst, val;
1952 char msg_buffer[80];
1953 int full_update = 0;
1954
1955 if (!(s->ar_index & 0x20)) {
1956 graphic_mode = GMODE_BLANK;
1957 } else {
1958 graphic_mode = s->gr[6] & 1;
1959 }
1960 if (graphic_mode != s->graphic_mode) {
1961 s->graphic_mode = graphic_mode;
1962 full_update = 1;
1963 }
1964 if (s->last_width == -1) {
1965 s->last_width = 0;
1966 full_update = 1;
1967 }
1968
1969 switch (graphic_mode) {
1970 case GMODE_TEXT:
1971 /* TODO: update palette */
1972 full_update |= update_basic_params(s);
1973
1974 /* total width & height */
1975 cheight = (s->cr[9] & 0x1f) + 1;
1976 cw = 8;
1977 if (!(s->sr[1] & 0x01))
1978 cw = 9;
1979 if (s->sr[1] & 0x08)
1980 cw = 16; /* NOTE: no 18 pixel wide */
1981 width = (s->cr[0x01] + 1);
1982 if (s->cr[0x06] == 100) {
1983 /* ugly hack for CGA 160x100x16 - explain me the logic */
1984 height = 100;
1985 } else {
1986 height = s->cr[0x12] |
1987 ((s->cr[0x07] & 0x02) << 7) |
1988 ((s->cr[0x07] & 0x40) << 3);
1989 height = (height + 1) / cheight;
1990 }
1991
1992 size = (height * width);
1993 if (size > CH_ATTR_SIZE) {
1994 if (!full_update)
1995 return;
1996
1997 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
1998 width, height);
1999 break;
2000 }
2001
2002 if (width != s->last_width || height != s->last_height ||
2003 cw != s->last_cw || cheight != s->last_ch) {
2004 s->last_scr_width = width * cw;
2005 s->last_scr_height = height * cheight;
2006 s->ds->surface->width = width;
2007 s->ds->surface->height = height;
2008 dpy_resize(s->ds);
2009 s->last_width = width;
2010 s->last_height = height;
2011 s->last_ch = cheight;
2012 s->last_cw = cw;
2013 full_update = 1;
2014 }
2015
2016 /* Update "hardware" cursor */
2017 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
2018 if (cursor_offset != s->cursor_offset ||
2019 s->cr[0xa] != s->cursor_start ||
2020 s->cr[0xb] != s->cursor_end || full_update) {
2021 cursor_visible = !(s->cr[0xa] & 0x20);
2022 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
2023 dpy_cursor(s->ds,
2024 TEXTMODE_X(cursor_offset),
2025 TEXTMODE_Y(cursor_offset));
2026 else
2027 dpy_cursor(s->ds, -1, -1);
2028 s->cursor_offset = cursor_offset;
2029 s->cursor_start = s->cr[0xa];
2030 s->cursor_end = s->cr[0xb];
2031 }
2032
2033 src = (uint32_t *) s->vram_ptr + s->start_addr;
2034 dst = chardata;
2035
2036 if (full_update) {
2037 for (i = 0; i < size; src ++, dst ++, i ++)
2038 console_write_ch(dst, VMEM2CHTYPE(*src));
2039
2040 dpy_update(s->ds, 0, 0, width, height);
2041 } else {
2042 c_max = 0;
2043
2044 for (i = 0; i < size; src ++, dst ++, i ++) {
2045 console_write_ch(&val, VMEM2CHTYPE(*src));
2046 if (*dst != val) {
2047 *dst = val;
2048 c_max = i;
2049 break;
2050 }
2051 }
2052 c_min = i;
2053 for (; i < size; src ++, dst ++, i ++) {
2054 console_write_ch(&val, VMEM2CHTYPE(*src));
2055 if (*dst != val) {
2056 *dst = val;
2057 c_max = i;
2058 }
2059 }
2060
2061 if (c_min <= c_max) {
2062 i = TEXTMODE_Y(c_min);
2063 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2064 }
2065 }
2066
2067 return;
2068 case GMODE_GRAPH:
2069 if (!full_update)
2070 return;
2071
2072 s->get_resolution(s, &width, &height);
2073 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2074 width, height);
2075 break;
2076 case GMODE_BLANK:
2077 default:
2078 if (!full_update)
2079 return;
2080
2081 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2082 break;
2083 }
2084
2085 /* Display a message */
2086 s->last_width = 60;
2087 s->last_height = height = 3;
2088 dpy_cursor(s->ds, -1, -1);
2089 s->ds->surface->width = s->last_width;
2090 s->ds->surface->height = height;
2091 dpy_resize(s->ds);
2092
2093 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2094 console_write_ch(dst ++, ' ');
2095
2096 size = strlen(msg_buffer);
2097 width = (s->last_width - size) / 2;
2098 dst = chardata + s->last_width + width;
2099 for (i = 0; i < size; i ++)
2100 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2101
2102 dpy_update(s->ds, 0, 0, s->last_width, height);
2103 }
2104
2105 static CPUReadMemoryFunc *vga_mem_read[3] = {
2106 vga_mem_readb,
2107 vga_mem_readw,
2108 vga_mem_readl,
2109 };
2110
2111 static CPUWriteMemoryFunc *vga_mem_write[3] = {
2112 vga_mem_writeb,
2113 vga_mem_writew,
2114 vga_mem_writel,
2115 };
2116
2117 static void vga_save(QEMUFile *f, void *opaque)
2118 {
2119 VGAState *s = opaque;
2120 int i;
2121
2122 if (s->pci_dev)
2123 pci_device_save(s->pci_dev, f);
2124
2125 qemu_put_be32s(f, &s->latch);
2126 qemu_put_8s(f, &s->sr_index);
2127 qemu_put_buffer(f, s->sr, 8);
2128 qemu_put_8s(f, &s->gr_index);
2129 qemu_put_buffer(f, s->gr, 16);
2130 qemu_put_8s(f, &s->ar_index);
2131 qemu_put_buffer(f, s->ar, 21);
2132 qemu_put_be32(f, s->ar_flip_flop);
2133 qemu_put_8s(f, &s->cr_index);
2134 qemu_put_buffer(f, s->cr, 256);
2135 qemu_put_8s(f, &s->msr);
2136 qemu_put_8s(f, &s->fcr);
2137 qemu_put_byte(f, s->st00);
2138 qemu_put_8s(f, &s->st01);
2139
2140 qemu_put_8s(f, &s->dac_state);
2141 qemu_put_8s(f, &s->dac_sub_index);
2142 qemu_put_8s(f, &s->dac_read_index);
2143 qemu_put_8s(f, &s->dac_write_index);
2144 qemu_put_buffer(f, s->dac_cache, 3);
2145 qemu_put_buffer(f, s->palette, 768);
2146
2147 qemu_put_be32(f, s->bank_offset);
2148 #ifdef CONFIG_BOCHS_VBE
2149 qemu_put_byte(f, 1);
2150 qemu_put_be16s(f, &s->vbe_index);
2151 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2152 qemu_put_be16s(f, &s->vbe_regs[i]);
2153 qemu_put_be32s(f, &s->vbe_start_addr);
2154 qemu_put_be32s(f, &s->vbe_line_offset);
2155 qemu_put_be32s(f, &s->vbe_bank_mask);
2156 #else
2157 qemu_put_byte(f, 0);
2158 #endif
2159 }
2160
2161 static int vga_load(QEMUFile *f, void *opaque, int version_id)
2162 {
2163 VGAState *s = opaque;
2164 int is_vbe, i, ret;
2165
2166 if (version_id > 2)
2167 return -EINVAL;
2168
2169 if (s->pci_dev && version_id >= 2) {
2170 ret = pci_device_load(s->pci_dev, f);
2171 if (ret < 0)
2172 return ret;
2173 }
2174
2175 qemu_get_be32s(f, &s->latch);
2176 qemu_get_8s(f, &s->sr_index);
2177 qemu_get_buffer(f, s->sr, 8);
2178 qemu_get_8s(f, &s->gr_index);
2179 qemu_get_buffer(f, s->gr, 16);
2180 qemu_get_8s(f, &s->ar_index);
2181 qemu_get_buffer(f, s->ar, 21);
2182 s->ar_flip_flop=qemu_get_be32(f);
2183 qemu_get_8s(f, &s->cr_index);
2184 qemu_get_buffer(f, s->cr, 256);
2185 qemu_get_8s(f, &s->msr);
2186 qemu_get_8s(f, &s->fcr);
2187 qemu_get_8s(f, &s->st00);
2188 qemu_get_8s(f, &s->st01);
2189
2190 qemu_get_8s(f, &s->dac_state);
2191 qemu_get_8s(f, &s->dac_sub_index);
2192 qemu_get_8s(f, &s->dac_read_index);
2193 qemu_get_8s(f, &s->dac_write_index);
2194 qemu_get_buffer(f, s->dac_cache, 3);
2195 qemu_get_buffer(f, s->palette, 768);
2196
2197 s->bank_offset=qemu_get_be32(f);
2198 is_vbe = qemu_get_byte(f);
2199 #ifdef CONFIG_BOCHS_VBE
2200 if (!is_vbe)
2201 return -EINVAL;
2202 qemu_get_be16s(f, &s->vbe_index);
2203 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2204 qemu_get_be16s(f, &s->vbe_regs[i]);
2205 qemu_get_be32s(f, &s->vbe_start_addr);
2206 qemu_get_be32s(f, &s->vbe_line_offset);
2207 qemu_get_be32s(f, &s->vbe_bank_mask);
2208 #else
2209 if (is_vbe)
2210 return -EINVAL;
2211 #endif
2212
2213 /* force refresh */
2214 s->graphic_mode = -1;
2215 return 0;
2216 }
2217
2218 typedef struct PCIVGAState {
2219 PCIDevice dev;
2220 VGAState vga_state;
2221 } PCIVGAState;
2222
2223 void vga_dirty_log_start(VGAState *s)
2224 {
2225 if (kvm_enabled() && s->map_addr)
2226 kvm_log_start(s->map_addr, s->map_end - s->map_addr);
2227
2228 if (kvm_enabled() && s->lfb_vram_mapped) {
2229 kvm_log_start(isa_mem_base + 0xa0000, 0x8000);
2230 kvm_log_start(isa_mem_base + 0xa8000, 0x8000);
2231 }
2232 }
2233
2234 void vga_dirty_log_stop(VGAState *s)
2235 {
2236 if (kvm_enabled() && s->map_addr)
2237 kvm_log_stop(s->map_addr, s->map_end - s->map_addr);
2238
2239 if (kvm_enabled() && s->lfb_vram_mapped) {
2240 kvm_log_stop(isa_mem_base + 0xa0000, 0x8000);
2241 kvm_log_stop(isa_mem_base + 0xa8000, 0x8000);
2242 }
2243 }
2244
2245 static void vga_map(PCIDevice *pci_dev, int region_num,
2246 uint32_t addr, uint32_t size, int type)
2247 {
2248 PCIVGAState *d = (PCIVGAState *)pci_dev;
2249 VGAState *s = &d->vga_state;
2250 if (region_num == PCI_ROM_SLOT) {
2251 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
2252 } else {
2253 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
2254 }
2255
2256 s->map_addr = addr;
2257 s->map_end = addr + VGA_RAM_SIZE;
2258
2259 vga_dirty_log_start(s);
2260 }
2261
2262 void vga_common_init(VGAState *s, uint8_t *vga_ram_base,
2263 ram_addr_t vga_ram_offset, int vga_ram_size)
2264 {
2265 int i, j, v, b;
2266
2267 for(i = 0;i < 256; i++) {
2268 v = 0;
2269 for(j = 0; j < 8; j++) {
2270 v |= ((i >> j) & 1) << (j * 4);
2271 }
2272 expand4[i] = v;
2273
2274 v = 0;
2275 for(j = 0; j < 4; j++) {
2276 v |= ((i >> (2 * j)) & 3) << (j * 4);
2277 }
2278 expand2[i] = v;
2279 }
2280 for(i = 0; i < 16; i++) {
2281 v = 0;
2282 for(j = 0; j < 4; j++) {
2283 b = ((i >> j) & 1);
2284 v |= b << (2 * j);
2285 v |= b << (2 * j + 1);
2286 }
2287 expand4to8[i] = v;
2288 }
2289
2290 s->vram_ptr = vga_ram_base;
2291 s->vram_offset = vga_ram_offset;
2292 s->vram_size = vga_ram_size;
2293 s->get_bpp = vga_get_bpp;
2294 s->get_offsets = vga_get_offsets;
2295 s->get_resolution = vga_get_resolution;
2296 s->update = vga_update_display;
2297 s->invalidate = vga_invalidate_display;
2298 s->screen_dump = vga_screen_dump;
2299 s->text_update = vga_update_text;
2300 switch (vga_retrace_method) {
2301 case VGA_RETRACE_DUMB:
2302 s->retrace = vga_dumb_retrace;
2303 s->update_retrace_info = vga_dumb_update_retrace_info;
2304 break;
2305
2306 case VGA_RETRACE_PRECISE:
2307 s->retrace = vga_precise_retrace;
2308 s->update_retrace_info = vga_precise_update_retrace_info;
2309 break;
2310 }
2311 vga_reset(s);
2312 }
2313
2314 /* used by both ISA and PCI */
2315 void vga_init(VGAState *s)
2316 {
2317 int vga_io_memory;
2318
2319 qemu_register_reset(vga_reset, s);
2320 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2321
2322 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2323
2324 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2325 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2326 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2327 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2328
2329 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2330
2331 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2332 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2333 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2334 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2335 s->bank_offset = 0;
2336
2337 #ifdef CONFIG_BOCHS_VBE
2338 #if defined (TARGET_I386)
2339 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2340 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2341
2342 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2343 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2344
2345 /* old Bochs IO ports */
2346 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
2347 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
2348
2349 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
2350 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
2351 #else
2352 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2353 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2354
2355 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2356 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2357 #endif
2358 #endif /* CONFIG_BOCHS_VBE */
2359
2360 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2361 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
2362 vga_io_memory);
2363 qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
2364 }
2365
2366 /* Memory mapped interface */
2367 static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr)
2368 {
2369 VGAState *s = opaque;
2370
2371 return vga_ioport_read(s, addr >> s->it_shift) & 0xff;
2372 }
2373
2374 static void vga_mm_writeb (void *opaque,
2375 target_phys_addr_t addr, uint32_t value)
2376 {
2377 VGAState *s = opaque;
2378
2379 vga_ioport_write(s, addr >> s->it_shift, value & 0xff);
2380 }
2381
2382 static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr)
2383 {
2384 VGAState *s = opaque;
2385
2386 return vga_ioport_read(s, addr >> s->it_shift) & 0xffff;
2387 }
2388
2389 static void vga_mm_writew (void *opaque,
2390 target_phys_addr_t addr, uint32_t value)
2391 {
2392 VGAState *s = opaque;
2393
2394 vga_ioport_write(s, addr >> s->it_shift, value & 0xffff);
2395 }
2396
2397 static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr)
2398 {
2399 VGAState *s = opaque;
2400
2401 return vga_ioport_read(s, addr >> s->it_shift);
2402 }
2403
2404 static void vga_mm_writel (void *opaque,
2405 target_phys_addr_t addr, uint32_t value)
2406 {
2407 VGAState *s = opaque;
2408
2409 vga_ioport_write(s, addr >> s->it_shift, value);
2410 }
2411
2412 static CPUReadMemoryFunc *vga_mm_read_ctrl[] = {
2413 &vga_mm_readb,
2414 &vga_mm_readw,
2415 &vga_mm_readl,
2416 };
2417
2418 static CPUWriteMemoryFunc *vga_mm_write_ctrl[] = {
2419 &vga_mm_writeb,
2420 &vga_mm_writew,
2421 &vga_mm_writel,
2422 };
2423
2424 static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base,
2425 target_phys_addr_t ctrl_base, int it_shift)
2426 {
2427 int s_ioport_ctrl, vga_io_memory;
2428
2429 s->it_shift = it_shift;
2430 s_ioport_ctrl = cpu_register_io_memory(0, vga_mm_read_ctrl, vga_mm_write_ctrl, s);
2431 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2432
2433 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2434
2435 cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl);
2436 s->bank_offset = 0;
2437 cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory);
2438 qemu_register_coalesced_mmio(vram_base + 0x000a0000, 0x20000);
2439 }
2440
2441 int isa_vga_init(uint8_t *vga_ram_base,
2442 unsigned long vga_ram_offset, int vga_ram_size)
2443 {
2444 VGAState *s;
2445
2446 s = qemu_mallocz(sizeof(VGAState));
2447
2448 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2449 vga_init(s);
2450
2451 s->ds = graphic_console_init(s->update, s->invalidate,
2452 s->screen_dump, s->text_update, s);
2453
2454 #ifdef CONFIG_BOCHS_VBE
2455 /* XXX: use optimized standard vga accesses */
2456 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2457 vga_ram_size, vga_ram_offset);
2458 #endif
2459 return 0;
2460 }
2461
2462 int isa_vga_mm_init(uint8_t *vga_ram_base,
2463 unsigned long vga_ram_offset, int vga_ram_size,
2464 target_phys_addr_t vram_base, target_phys_addr_t ctrl_base,
2465 int it_shift)
2466 {
2467 VGAState *s;
2468
2469 s = qemu_mallocz(sizeof(VGAState));
2470
2471 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2472 vga_mm_init(s, vram_base, ctrl_base, it_shift);
2473
2474 s->ds = graphic_console_init(s->update, s->invalidate,
2475 s->screen_dump, s->text_update, s);
2476
2477 #ifdef CONFIG_BOCHS_VBE
2478 /* XXX: use optimized standard vga accesses */
2479 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2480 vga_ram_size, vga_ram_offset);
2481 #endif
2482 return 0;
2483 }
2484
2485 int pci_vga_init(PCIBus *bus, uint8_t *vga_ram_base,
2486 unsigned long vga_ram_offset, int vga_ram_size,
2487 unsigned long vga_bios_offset, int vga_bios_size)
2488 {
2489 PCIVGAState *d;
2490 VGAState *s;
2491 uint8_t *pci_conf;
2492
2493 d = (PCIVGAState *)pci_register_device(bus, "VGA",
2494 sizeof(PCIVGAState),
2495 -1, NULL, NULL);
2496 if (!d)
2497 return -1;
2498 s = &d->vga_state;
2499
2500 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2501 vga_init(s);
2502
2503 s->ds = graphic_console_init(s->update, s->invalidate,
2504 s->screen_dump, s->text_update, s);
2505
2506 s->pci_dev = &d->dev;
2507
2508 pci_conf = d->dev.config;
2509 // dummy VGA (same as Bochs ID)
2510 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU);
2511 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA);
2512 pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
2513 pci_conf[0x0e] = 0x00; // header_type
2514
2515 /* XXX: vga_ram_size must be a power of two */
2516 pci_register_io_region(&d->dev, 0, vga_ram_size,
2517 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2518 if (vga_bios_size != 0) {
2519 unsigned int bios_total_size;
2520 s->bios_offset = vga_bios_offset;
2521 s->bios_size = vga_bios_size;
2522 /* must be a power of two */
2523 bios_total_size = 1;
2524 while (bios_total_size < vga_bios_size)
2525 bios_total_size <<= 1;
2526 pci_register_io_region(&d->dev, PCI_ROM_SLOT, bios_total_size,
2527 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2528 }
2529 return 0;
2530 }
2531
2532 /********************************************************/
2533 /* vga screen dump */
2534
2535 static void vga_save_dpy_update(DisplayState *s,
2536 int x, int y, int w, int h)
2537 {
2538 }
2539
2540 static void vga_save_dpy_resize(DisplayState *s)
2541 {
2542 }
2543
2544 static void vga_save_dpy_refresh(DisplayState *s)
2545 {
2546 }
2547
2548 int ppm_save(const char *filename, struct DisplaySurface *ds)
2549 {
2550 FILE *f;
2551 uint8_t *d, *d1;
2552 uint32_t v;
2553 int y, x;
2554 uint8_t r, g, b;
2555
2556 f = fopen(filename, "wb");
2557 if (!f)
2558 return -1;
2559 fprintf(f, "P6\n%d %d\n%d\n",
2560 ds->width, ds->height, 255);
2561 d1 = ds->data;
2562 for(y = 0; y < ds->height; y++) {
2563 d = d1;
2564 for(x = 0; x < ds->width; x++) {
2565 if (ds->pf.bits_per_pixel == 32)
2566 v = *(uint32_t *)d;
2567 else
2568 v = (uint32_t) (*(uint16_t *)d);
2569 r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 /
2570 (ds->pf.rmax + 1);
2571 g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 /
2572 (ds->pf.gmax + 1);
2573 b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 /
2574 (ds->pf.bmax + 1);
2575 fputc(r, f);
2576 fputc(g, f);
2577 fputc(b, f);
2578 d += ds->pf.bytes_per_pixel;
2579 }
2580 d1 += ds->linesize;
2581 }
2582 fclose(f);
2583 return 0;
2584 }
2585
2586 static void vga_screen_dump_blank(VGAState *s, const char *filename)
2587 {
2588 FILE *f;
2589 unsigned int y, x, w, h;
2590
2591 w = s->last_scr_width * sizeof(uint32_t);
2592 h = s->last_scr_height;
2593
2594 f = fopen(filename, "wb");
2595 if (!f)
2596 return;
2597 fprintf(f, "P6\n%d %d\n%d\n", w, h, 255);
2598 for (y = 0; y < h; y++) {
2599 for (x = 0; x < w; x++) {
2600 fputc(0, f);
2601 }
2602 }
2603 fclose(f);
2604 }
2605
2606 static void vga_screen_dump_common(VGAState *s, const char *filename,
2607 int w, int h)
2608 {
2609 DisplayState *saved_ds, ds1, *ds = &ds1;
2610 DisplayChangeListener dcl;
2611
2612 /* XXX: this is a little hackish */
2613 vga_invalidate_display(s);
2614 saved_ds = s->ds;
2615
2616 memset(ds, 0, sizeof(DisplayState));
2617 memset(&dcl, 0, sizeof(DisplayChangeListener));
2618 dcl.dpy_update = vga_save_dpy_update;
2619 dcl.dpy_resize = vga_save_dpy_resize;
2620 dcl.dpy_refresh = vga_save_dpy_refresh;
2621 register_displaychangelistener(ds, &dcl);
2622 ds->surface = qemu_create_displaysurface(w, h, 32, 4 * w);
2623
2624 s->ds = ds;
2625 s->graphic_mode = -1;
2626 vga_update_display(s);
2627
2628 ppm_save(filename, ds->surface);
2629
2630 qemu_free_displaysurface(ds->surface);
2631 s->ds = saved_ds;
2632 }
2633
2634 static void vga_screen_dump_graphic(VGAState *s, const char *filename)
2635 {
2636 int w, h;
2637
2638 s->get_resolution(s, &w, &h);
2639 vga_screen_dump_common(s, filename, w, h);
2640 }
2641
2642 static void vga_screen_dump_text(VGAState *s, const char *filename)
2643 {
2644 int w, h, cwidth, cheight;
2645
2646 vga_get_text_resolution(s, &w, &h, &cwidth, &cheight);
2647 vga_screen_dump_common(s, filename, w * cwidth, h * cheight);
2648 }
2649
2650 /* save the vga display in a PPM image even if no display is
2651 available */
2652 static void vga_screen_dump(void *opaque, const char *filename)
2653 {
2654 VGAState *s = (VGAState *)opaque;
2655
2656 if (!(s->ar_index & 0x20))
2657 vga_screen_dump_blank(s, filename);
2658 else if (s->gr[6] & 1)
2659 vga_screen_dump_graphic(s, filename);
2660 else
2661 vga_screen_dump_text(s, filename);
2662 }