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Apply TCGV_UNUSED on variables that GCC mistakenly thinks can be used
[qemu-kvm/fedora.git] / hw / vga.c
blob134ad1646d67e1d535c4baeeaf5a7fc673331278
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 0x03,
42 0x3d,
43 0x0f,
44 0x3f,
45 0x0e,
46 0x00,
47 0x00,
48 0xff,
49 };
50
51 const uint8_t gr_mask[16] = {
52 0x0f, /* 0x00 */
53 0x0f, /* 0x01 */
54 0x0f, /* 0x02 */
55 0x1f, /* 0x03 */
56 0x03, /* 0x04 */
57 0x7b, /* 0x05 */
58 0x0f, /* 0x06 */
59 0x0f, /* 0x07 */
60 0xff, /* 0x08 */
61 0x00, /* 0x09 */
62 0x00, /* 0x0a */
63 0x00, /* 0x0b */
64 0x00, /* 0x0c */
65 0x00, /* 0x0d */
66 0x00, /* 0x0e */
67 0x00, /* 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 if (is_surface_bgr(s->surface))
1165 return 4;
1166 else
1167 return 3;
1168 }
1169 }
1170
1171 static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1172 vga_draw_glyph8_8,
1173 vga_draw_glyph8_16,
1174 vga_draw_glyph8_16,
1175 vga_draw_glyph8_32,
1176 vga_draw_glyph8_32,
1177 vga_draw_glyph8_16,
1178 vga_draw_glyph8_16,
1179 };
1180
1181 static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1182 vga_draw_glyph16_8,
1183 vga_draw_glyph16_16,
1184 vga_draw_glyph16_16,
1185 vga_draw_glyph16_32,
1186 vga_draw_glyph16_32,
1187 vga_draw_glyph16_16,
1188 vga_draw_glyph16_16,
1189 };
1190
1191 static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
1192 vga_draw_glyph9_8,
1193 vga_draw_glyph9_16,
1194 vga_draw_glyph9_16,
1195 vga_draw_glyph9_32,
1196 vga_draw_glyph9_32,
1197 vga_draw_glyph9_16,
1198 vga_draw_glyph9_16,
1199 };
1200
1201 static const uint8_t cursor_glyph[32 * 4] = {
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 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1216 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1217 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1218 };
1219
1220 static void vga_get_text_resolution(VGAState *s, int *pwidth, int *pheight,
1221 int *pcwidth, int *pcheight)
1222 {
1223 int width, cwidth, height, cheight;
1224
1225 /* total width & height */
1226 cheight = (s->cr[9] & 0x1f) + 1;
1227 cwidth = 8;
1228 if (!(s->sr[1] & 0x01))
1229 cwidth = 9;
1230 if (s->sr[1] & 0x08)
1231 cwidth = 16; /* NOTE: no 18 pixel wide */
1232 width = (s->cr[0x01] + 1);
1233 if (s->cr[0x06] == 100) {
1234 /* ugly hack for CGA 160x100x16 - explain me the logic */
1235 height = 100;
1236 } else {
1237 height = s->cr[0x12] |
1238 ((s->cr[0x07] & 0x02) << 7) |
1239 ((s->cr[0x07] & 0x40) << 3);
1240 height = (height + 1) / cheight;
1241 }
1242
1243 *pwidth = width;
1244 *pheight = height;
1245 *pcwidth = cwidth;
1246 *pcheight = cheight;
1247 }
1248
1249 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1250
1251 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1252 rgb_to_pixel8_dup,
1253 rgb_to_pixel15_dup,
1254 rgb_to_pixel16_dup,
1255 rgb_to_pixel32_dup,
1256 rgb_to_pixel32bgr_dup,
1257 rgb_to_pixel15bgr_dup,
1258 rgb_to_pixel16bgr_dup,
1259 };
1260
1261 /*
1262 * Text mode update
1263 * Missing:
1264 * - double scan
1265 * - double width
1266 * - underline
1267 * - flashing
1268 */
1269 static void vga_draw_text(VGAState *s, int full_update)
1270 {
1271 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1272 int cx_min, cx_max, linesize, x_incr;
1273 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1274 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1275 const uint8_t *font_ptr, *font_base[2];
1276 int dup9, line_offset, depth_index;
1277 uint32_t *palette;
1278 uint32_t *ch_attr_ptr;
1279 vga_draw_glyph8_func *vga_draw_glyph8;
1280 vga_draw_glyph9_func *vga_draw_glyph9;
1281
1282 /* compute font data address (in plane 2) */
1283 v = s->sr[3];
1284 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1285 if (offset != s->font_offsets[0]) {
1286 s->font_offsets[0] = offset;
1287 full_update = 1;
1288 }
1289 font_base[0] = s->vram_ptr + offset;
1290
1291 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1292 font_base[1] = s->vram_ptr + offset;
1293 if (offset != s->font_offsets[1]) {
1294 s->font_offsets[1] = offset;
1295 full_update = 1;
1296 }
1297 if (s->plane_updated & (1 << 2)) {
1298 /* if the plane 2 was modified since the last display, it
1299 indicates the font may have been modified */
1300 s->plane_updated = 0;
1301 full_update = 1;
1302 }
1303 full_update |= update_basic_params(s);
1304
1305 line_offset = s->line_offset;
1306 s1 = s->vram_ptr + (s->start_addr * 4);
1307
1308 vga_get_text_resolution(s, &width, &height, &cw, &cheight);
1309 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1310 if ((height * width) > CH_ATTR_SIZE) {
1311 /* better than nothing: exit if transient size is too big */
1312 return;
1313 }
1314
1315 if (width != s->last_width || height != s->last_height ||
1316 cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
1317 s->last_scr_width = width * cw;
1318 s->last_scr_height = height * cheight;
1319 qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height);
1320 s->last_depth = 0;
1321 s->last_width = width;
1322 s->last_height = height;
1323 s->last_ch = cheight;
1324 s->last_cw = cw;
1325 full_update = 1;
1326 }
1327 s->rgb_to_pixel =
1328 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1329 full_update |= update_palette16(s);
1330 palette = s->last_palette;
1331 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1332
1333 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1334 if (cursor_offset != s->cursor_offset ||
1335 s->cr[0xa] != s->cursor_start ||
1336 s->cr[0xb] != s->cursor_end) {
1337 /* if the cursor position changed, we update the old and new
1338 chars */
1339 if (s->cursor_offset < CH_ATTR_SIZE)
1340 s->last_ch_attr[s->cursor_offset] = -1;
1341 if (cursor_offset < CH_ATTR_SIZE)
1342 s->last_ch_attr[cursor_offset] = -1;
1343 s->cursor_offset = cursor_offset;
1344 s->cursor_start = s->cr[0xa];
1345 s->cursor_end = s->cr[0xb];
1346 }
1347 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1348
1349 depth_index = get_depth_index(s->ds);
1350 if (cw == 16)
1351 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1352 else
1353 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1354 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1355
1356 dest = ds_get_data(s->ds);
1357 linesize = ds_get_linesize(s->ds);
1358 ch_attr_ptr = s->last_ch_attr;
1359 for(cy = 0; cy < height; cy++) {
1360 d1 = dest;
1361 src = s1;
1362 cx_min = width;
1363 cx_max = -1;
1364 for(cx = 0; cx < width; cx++) {
1365 ch_attr = *(uint16_t *)src;
1366 if (full_update || ch_attr != *ch_attr_ptr) {
1367 if (cx < cx_min)
1368 cx_min = cx;
1369 if (cx > cx_max)
1370 cx_max = cx;
1371 *ch_attr_ptr = ch_attr;
1372 #ifdef WORDS_BIGENDIAN
1373 ch = ch_attr >> 8;
1374 cattr = ch_attr & 0xff;
1375 #else
1376 ch = ch_attr & 0xff;
1377 cattr = ch_attr >> 8;
1378 #endif
1379 font_ptr = font_base[(cattr >> 3) & 1];
1380 font_ptr += 32 * 4 * ch;
1381 bgcol = palette[cattr >> 4];
1382 fgcol = palette[cattr & 0x0f];
1383 if (cw != 9) {
1384 vga_draw_glyph8(d1, linesize,
1385 font_ptr, cheight, fgcol, bgcol);
1386 } else {
1387 dup9 = 0;
1388 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1389 dup9 = 1;
1390 vga_draw_glyph9(d1, linesize,
1391 font_ptr, cheight, fgcol, bgcol, dup9);
1392 }
1393 if (src == cursor_ptr &&
1394 !(s->cr[0x0a] & 0x20)) {
1395 int line_start, line_last, h;
1396 /* draw the cursor */
1397 line_start = s->cr[0x0a] & 0x1f;
1398 line_last = s->cr[0x0b] & 0x1f;
1399 /* XXX: check that */
1400 if (line_last > cheight - 1)
1401 line_last = cheight - 1;
1402 if (line_last >= line_start && line_start < cheight) {
1403 h = line_last - line_start + 1;
1404 d = d1 + linesize * line_start;
1405 if (cw != 9) {
1406 vga_draw_glyph8(d, linesize,
1407 cursor_glyph, h, fgcol, bgcol);
1408 } else {
1409 vga_draw_glyph9(d, linesize,
1410 cursor_glyph, h, fgcol, bgcol, 1);
1411 }
1412 }
1413 }
1414 }
1415 d1 += x_incr;
1416 src += 4;
1417 ch_attr_ptr++;
1418 }
1419 if (cx_max != -1) {
1420 dpy_update(s->ds, cx_min * cw, cy * cheight,
1421 (cx_max - cx_min + 1) * cw, cheight);
1422 }
1423 dest += linesize * cheight;
1424 s1 += line_offset;
1425 }
1426 }
1427
1428 enum {
1429 VGA_DRAW_LINE2,
1430 VGA_DRAW_LINE2D2,
1431 VGA_DRAW_LINE4,
1432 VGA_DRAW_LINE4D2,
1433 VGA_DRAW_LINE8D2,
1434 VGA_DRAW_LINE8,
1435 VGA_DRAW_LINE15,
1436 VGA_DRAW_LINE16,
1437 VGA_DRAW_LINE24,
1438 VGA_DRAW_LINE32,
1439 VGA_DRAW_LINE_NB,
1440 };
1441
1442 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1443 vga_draw_line2_8,
1444 vga_draw_line2_16,
1445 vga_draw_line2_16,
1446 vga_draw_line2_32,
1447 vga_draw_line2_32,
1448 vga_draw_line2_16,
1449 vga_draw_line2_16,
1450
1451 vga_draw_line2d2_8,
1452 vga_draw_line2d2_16,
1453 vga_draw_line2d2_16,
1454 vga_draw_line2d2_32,
1455 vga_draw_line2d2_32,
1456 vga_draw_line2d2_16,
1457 vga_draw_line2d2_16,
1458
1459 vga_draw_line4_8,
1460 vga_draw_line4_16,
1461 vga_draw_line4_16,
1462 vga_draw_line4_32,
1463 vga_draw_line4_32,
1464 vga_draw_line4_16,
1465 vga_draw_line4_16,
1466
1467 vga_draw_line4d2_8,
1468 vga_draw_line4d2_16,
1469 vga_draw_line4d2_16,
1470 vga_draw_line4d2_32,
1471 vga_draw_line4d2_32,
1472 vga_draw_line4d2_16,
1473 vga_draw_line4d2_16,
1474
1475 vga_draw_line8d2_8,
1476 vga_draw_line8d2_16,
1477 vga_draw_line8d2_16,
1478 vga_draw_line8d2_32,
1479 vga_draw_line8d2_32,
1480 vga_draw_line8d2_16,
1481 vga_draw_line8d2_16,
1482
1483 vga_draw_line8_8,
1484 vga_draw_line8_16,
1485 vga_draw_line8_16,
1486 vga_draw_line8_32,
1487 vga_draw_line8_32,
1488 vga_draw_line8_16,
1489 vga_draw_line8_16,
1490
1491 vga_draw_line15_8,
1492 vga_draw_line15_15,
1493 vga_draw_line15_16,
1494 vga_draw_line15_32,
1495 vga_draw_line15_32bgr,
1496 vga_draw_line15_15bgr,
1497 vga_draw_line15_16bgr,
1498
1499 vga_draw_line16_8,
1500 vga_draw_line16_15,
1501 vga_draw_line16_16,
1502 vga_draw_line16_32,
1503 vga_draw_line16_32bgr,
1504 vga_draw_line16_15bgr,
1505 vga_draw_line16_16bgr,
1506
1507 vga_draw_line24_8,
1508 vga_draw_line24_15,
1509 vga_draw_line24_16,
1510 vga_draw_line24_32,
1511 vga_draw_line24_32bgr,
1512 vga_draw_line24_15bgr,
1513 vga_draw_line24_16bgr,
1514
1515 vga_draw_line32_8,
1516 vga_draw_line32_15,
1517 vga_draw_line32_16,
1518 vga_draw_line32_32,
1519 vga_draw_line32_32bgr,
1520 vga_draw_line32_15bgr,
1521 vga_draw_line32_16bgr,
1522 };
1523
1524 static int vga_get_bpp(VGAState *s)
1525 {
1526 int ret;
1527 #ifdef CONFIG_BOCHS_VBE
1528 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1529 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1530 } else
1531 #endif
1532 {
1533 ret = 0;
1534 }
1535 return ret;
1536 }
1537
1538 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1539 {
1540 int width, height;
1541
1542 #ifdef CONFIG_BOCHS_VBE
1543 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1544 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1545 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1546 } else
1547 #endif
1548 {
1549 width = (s->cr[0x01] + 1) * 8;
1550 height = s->cr[0x12] |
1551 ((s->cr[0x07] & 0x02) << 7) |
1552 ((s->cr[0x07] & 0x40) << 3);
1553 height = (height + 1);
1554 }
1555 *pwidth = width;
1556 *pheight = height;
1557 }
1558
1559 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1560 {
1561 int y;
1562 if (y1 >= VGA_MAX_HEIGHT)
1563 return;
1564 if (y2 >= VGA_MAX_HEIGHT)
1565 y2 = VGA_MAX_HEIGHT;
1566 for(y = y1; y < y2; y++) {
1567 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1568 }
1569 }
1570
1571 static void vga_sync_dirty_bitmap(VGAState *s)
1572 {
1573 if (s->map_addr)
1574 cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end);
1575
1576 if (s->lfb_vram_mapped) {
1577 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000);
1578 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000);
1579 }
1580 }
1581
1582 /*
1583 * graphic modes
1584 */
1585 static void vga_draw_graphic(VGAState *s, int full_update)
1586 {
1587 int y1, y, update, linesize, y_start, double_scan, mask, depth;
1588 int width, height, shift_control, line_offset, bwidth, bits;
1589 ram_addr_t page0, page1, page_min, page_max;
1590 int disp_width, multi_scan, multi_run;
1591 uint8_t *d;
1592 uint32_t v, addr1, addr;
1593 vga_draw_line_func *vga_draw_line;
1594
1595 full_update |= update_basic_params(s);
1596
1597 if (!full_update)
1598 vga_sync_dirty_bitmap(s);
1599
1600 s->get_resolution(s, &width, &height);
1601 disp_width = width;
1602
1603 shift_control = (s->gr[0x05] >> 5) & 3;
1604 double_scan = (s->cr[0x09] >> 7);
1605 if (shift_control != 1) {
1606 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1607 } else {
1608 /* in CGA modes, multi_scan is ignored */
1609 /* XXX: is it correct ? */
1610 multi_scan = double_scan;
1611 }
1612 multi_run = multi_scan;
1613 if (shift_control != s->shift_control ||
1614 double_scan != s->double_scan) {
1615 full_update = 1;
1616 s->shift_control = shift_control;
1617 s->double_scan = double_scan;
1618 }
1619
1620 if (shift_control == 0) {
1621 if (s->sr[0x01] & 8) {
1622 disp_width <<= 1;
1623 }
1624 } else if (shift_control == 1) {
1625 if (s->sr[0x01] & 8) {
1626 disp_width <<= 1;
1627 }
1628 }
1629
1630 depth = s->get_bpp(s);
1631 if (s->line_offset != s->last_line_offset ||
1632 disp_width != s->last_width ||
1633 height != s->last_height ||
1634 s->last_depth != depth) {
1635 #if defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
1636 if (depth == 16 || depth == 32) {
1637 #else
1638 if (depth == 32) {
1639 #endif
1640 qemu_free_displaysurface(s->ds);
1641 s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth,
1642 s->line_offset,
1643 s->vram_ptr + (s->start_addr * 4));
1644 #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
1645 s->ds->surface->pf = qemu_different_endianness_pixelformat(depth);
1646 #endif
1647 dpy_resize(s->ds);
1648 } else {
1649 qemu_console_resize(s->ds, disp_width, height);
1650 }
1651 s->last_scr_width = disp_width;
1652 s->last_scr_height = height;
1653 s->last_width = disp_width;
1654 s->last_height = height;
1655 s->last_line_offset = s->line_offset;
1656 s->last_depth = depth;
1657 full_update = 1;
1658 } else if (is_buffer_shared(s->ds->surface) &&
1659 (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
1660 s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
1661 dpy_setdata(s->ds);
1662 }
1663
1664 s->rgb_to_pixel =
1665 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1666
1667 if (shift_control == 0) {
1668 full_update |= update_palette16(s);
1669 if (s->sr[0x01] & 8) {
1670 v = VGA_DRAW_LINE4D2;
1671 } else {
1672 v = VGA_DRAW_LINE4;
1673 }
1674 bits = 4;
1675 } else if (shift_control == 1) {
1676 full_update |= update_palette16(s);
1677 if (s->sr[0x01] & 8) {
1678 v = VGA_DRAW_LINE2D2;
1679 } else {
1680 v = VGA_DRAW_LINE2;
1681 }
1682 bits = 4;
1683 } else {
1684 switch(s->get_bpp(s)) {
1685 default:
1686 case 0:
1687 full_update |= update_palette256(s);
1688 v = VGA_DRAW_LINE8D2;
1689 bits = 4;
1690 break;
1691 case 8:
1692 full_update |= update_palette256(s);
1693 v = VGA_DRAW_LINE8;
1694 bits = 8;
1695 break;
1696 case 15:
1697 v = VGA_DRAW_LINE15;
1698 bits = 16;
1699 break;
1700 case 16:
1701 v = VGA_DRAW_LINE16;
1702 bits = 16;
1703 break;
1704 case 24:
1705 v = VGA_DRAW_LINE24;
1706 bits = 24;
1707 break;
1708 case 32:
1709 v = VGA_DRAW_LINE32;
1710 bits = 32;
1711 break;
1712 }
1713 }
1714 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1715
1716 if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
1717 s->cursor_invalidate(s);
1718
1719 line_offset = s->line_offset;
1720 #if 0
1721 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",
1722 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1723 #endif
1724 addr1 = (s->start_addr * 4);
1725 bwidth = (width * bits + 7) / 8;
1726 y_start = -1;
1727 page_min = -1;
1728 page_max = 0;
1729 d = ds_get_data(s->ds);
1730 linesize = ds_get_linesize(s->ds);
1731 y1 = 0;
1732 for(y = 0; y < height; y++) {
1733 addr = addr1;
1734 if (!(s->cr[0x17] & 1)) {
1735 int shift;
1736 /* CGA compatibility handling */
1737 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1738 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1739 }
1740 if (!(s->cr[0x17] & 2)) {
1741 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1742 }
1743 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1744 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1745 update = full_update |
1746 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1747 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1748 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1749 /* if wide line, can use another page */
1750 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1751 VGA_DIRTY_FLAG);
1752 }
1753 /* explicit invalidation for the hardware cursor */
1754 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1755 if (update) {
1756 if (y_start < 0)
1757 y_start = y;
1758 if (page0 < page_min)
1759 page_min = page0;
1760 if (page1 > page_max)
1761 page_max = page1;
1762 if (!(is_buffer_shared(s->ds->surface))) {
1763 vga_draw_line(s, d, s->vram_ptr + addr, width);
1764 if (s->cursor_draw_line)
1765 s->cursor_draw_line(s, d, y);
1766 }
1767 } else {
1768 if (y_start >= 0) {
1769 /* flush to display */
1770 dpy_update(s->ds, 0, y_start,
1771 disp_width, y - y_start);
1772 y_start = -1;
1773 }
1774 }
1775 if (!multi_run) {
1776 mask = (s->cr[0x17] & 3) ^ 3;
1777 if ((y1 & mask) == mask)
1778 addr1 += line_offset;
1779 y1++;
1780 multi_run = multi_scan;
1781 } else {
1782 multi_run--;
1783 }
1784 /* line compare acts on the displayed lines */
1785 if (y == s->line_compare)
1786 addr1 = 0;
1787 d += linesize;
1788 }
1789 if (y_start >= 0) {
1790 /* flush to display */
1791 dpy_update(s->ds, 0, y_start,
1792 disp_width, y - y_start);
1793 }
1794 /* reset modified pages */
1795 if (page_max >= page_min) {
1796 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1797 VGA_DIRTY_FLAG);
1798 }
1799 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1800 }
1801
1802 static void vga_draw_blank(VGAState *s, int full_update)
1803 {
1804 int i, w, val;
1805 uint8_t *d;
1806
1807 if (!full_update)
1808 return;
1809 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1810 return;
1811
1812 s->rgb_to_pixel =
1813 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1814 if (ds_get_bits_per_pixel(s->ds) == 8)
1815 val = s->rgb_to_pixel(0, 0, 0);
1816 else
1817 val = 0;
1818 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1819 d = ds_get_data(s->ds);
1820 for(i = 0; i < s->last_scr_height; i++) {
1821 memset(d, val, w);
1822 d += ds_get_linesize(s->ds);
1823 }
1824 dpy_update(s->ds, 0, 0,
1825 s->last_scr_width, s->last_scr_height);
1826 }
1827
1828 #define GMODE_TEXT 0
1829 #define GMODE_GRAPH 1
1830 #define GMODE_BLANK 2
1831
1832 static void vga_update_display(void *opaque)
1833 {
1834 VGAState *s = (VGAState *)opaque;
1835 int full_update, graphic_mode;
1836
1837 if (ds_get_bits_per_pixel(s->ds) == 0) {
1838 /* nothing to do */
1839 } else {
1840 full_update = 0;
1841 if (!(s->ar_index & 0x20)) {
1842 graphic_mode = GMODE_BLANK;
1843 } else {
1844 graphic_mode = s->gr[6] & 1;
1845 }
1846 if (graphic_mode != s->graphic_mode) {
1847 s->graphic_mode = graphic_mode;
1848 full_update = 1;
1849 }
1850 switch(graphic_mode) {
1851 case GMODE_TEXT:
1852 vga_draw_text(s, full_update);
1853 break;
1854 case GMODE_GRAPH:
1855 vga_draw_graphic(s, full_update);
1856 break;
1857 case GMODE_BLANK:
1858 default:
1859 vga_draw_blank(s, full_update);
1860 break;
1861 }
1862 }
1863 }
1864
1865 /* force a full display refresh */
1866 static void vga_invalidate_display(void *opaque)
1867 {
1868 VGAState *s = (VGAState *)opaque;
1869
1870 s->last_width = -1;
1871 s->last_height = -1;
1872 }
1873
1874 void vga_reset(void *opaque)
1875 {
1876 VGAState *s = (VGAState *) opaque;
1877
1878 s->lfb_addr = 0;
1879 s->lfb_end = 0;
1880 s->map_addr = 0;
1881 s->map_end = 0;
1882 s->lfb_vram_mapped = 0;
1883 s->bios_offset = 0;
1884 s->bios_size = 0;
1885 s->sr_index = 0;
1886 memset(s->sr, '\0', sizeof(s->sr));
1887 s->gr_index = 0;
1888 memset(s->gr, '\0', sizeof(s->gr));
1889 s->ar_index = 0;
1890 memset(s->ar, '\0', sizeof(s->ar));
1891 s->ar_flip_flop = 0;
1892 s->cr_index = 0;
1893 memset(s->cr, '\0', sizeof(s->cr));
1894 s->msr = 0;
1895 s->fcr = 0;
1896 s->st00 = 0;
1897 s->st01 = 0;
1898 s->dac_state = 0;
1899 s->dac_sub_index = 0;
1900 s->dac_read_index = 0;
1901 s->dac_write_index = 0;
1902 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1903 s->dac_8bit = 0;
1904 memset(s->palette, '\0', sizeof(s->palette));
1905 s->bank_offset = 0;
1906 #ifdef CONFIG_BOCHS_VBE
1907 s->vbe_index = 0;
1908 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1909 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1910 s->vbe_start_addr = 0;
1911 s->vbe_line_offset = 0;
1912 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1913 #endif
1914 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1915 s->graphic_mode = -1; /* force full update */
1916 s->shift_control = 0;
1917 s->double_scan = 0;
1918 s->line_offset = 0;
1919 s->line_compare = 0;
1920 s->start_addr = 0;
1921 s->plane_updated = 0;
1922 s->last_cw = 0;
1923 s->last_ch = 0;
1924 s->last_width = 0;
1925 s->last_height = 0;
1926 s->last_scr_width = 0;
1927 s->last_scr_height = 0;
1928 s->cursor_start = 0;
1929 s->cursor_end = 0;
1930 s->cursor_offset = 0;
1931 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1932 memset(s->last_palette, '\0', sizeof(s->last_palette));
1933 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1934 switch (vga_retrace_method) {
1935 case VGA_RETRACE_DUMB:
1936 break;
1937 case VGA_RETRACE_PRECISE:
1938 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1939 break;
1940 }
1941 }
1942
1943 #define TEXTMODE_X(x) ((x) % width)
1944 #define TEXTMODE_Y(x) ((x) / width)
1945 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1946 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1947 /* relay text rendering to the display driver
1948 * instead of doing a full vga_update_display() */
1949 static void vga_update_text(void *opaque, console_ch_t *chardata)
1950 {
1951 VGAState *s = (VGAState *) opaque;
1952 int graphic_mode, i, cursor_offset, cursor_visible;
1953 int cw, cheight, width, height, size, c_min, c_max;
1954 uint32_t *src;
1955 console_ch_t *dst, val;
1956 char msg_buffer[80];
1957 int full_update = 0;
1958
1959 if (!(s->ar_index & 0x20)) {
1960 graphic_mode = GMODE_BLANK;
1961 } else {
1962 graphic_mode = s->gr[6] & 1;
1963 }
1964 if (graphic_mode != s->graphic_mode) {
1965 s->graphic_mode = graphic_mode;
1966 full_update = 1;
1967 }
1968 if (s->last_width == -1) {
1969 s->last_width = 0;
1970 full_update = 1;
1971 }
1972
1973 switch (graphic_mode) {
1974 case GMODE_TEXT:
1975 /* TODO: update palette */
1976 full_update |= update_basic_params(s);
1977
1978 /* total width & height */
1979 cheight = (s->cr[9] & 0x1f) + 1;
1980 cw = 8;
1981 if (!(s->sr[1] & 0x01))
1982 cw = 9;
1983 if (s->sr[1] & 0x08)
1984 cw = 16; /* NOTE: no 18 pixel wide */
1985 width = (s->cr[0x01] + 1);
1986 if (s->cr[0x06] == 100) {
1987 /* ugly hack for CGA 160x100x16 - explain me the logic */
1988 height = 100;
1989 } else {
1990 height = s->cr[0x12] |
1991 ((s->cr[0x07] & 0x02) << 7) |
1992 ((s->cr[0x07] & 0x40) << 3);
1993 height = (height + 1) / cheight;
1994 }
1995
1996 size = (height * width);
1997 if (size > CH_ATTR_SIZE) {
1998 if (!full_update)
1999 return;
2000
2001 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
2002 width, height);
2003 break;
2004 }
2005
2006 if (width != s->last_width || height != s->last_height ||
2007 cw != s->last_cw || cheight != s->last_ch) {
2008 s->last_scr_width = width * cw;
2009 s->last_scr_height = height * cheight;
2010 s->ds->surface->width = width;
2011 s->ds->surface->height = height;
2012 dpy_resize(s->ds);
2013 s->last_width = width;
2014 s->last_height = height;
2015 s->last_ch = cheight;
2016 s->last_cw = cw;
2017 full_update = 1;
2018 }
2019
2020 /* Update "hardware" cursor */
2021 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
2022 if (cursor_offset != s->cursor_offset ||
2023 s->cr[0xa] != s->cursor_start ||
2024 s->cr[0xb] != s->cursor_end || full_update) {
2025 cursor_visible = !(s->cr[0xa] & 0x20);
2026 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
2027 dpy_cursor(s->ds,
2028 TEXTMODE_X(cursor_offset),
2029 TEXTMODE_Y(cursor_offset));
2030 else
2031 dpy_cursor(s->ds, -1, -1);
2032 s->cursor_offset = cursor_offset;
2033 s->cursor_start = s->cr[0xa];
2034 s->cursor_end = s->cr[0xb];
2035 }
2036
2037 src = (uint32_t *) s->vram_ptr + s->start_addr;
2038 dst = chardata;
2039
2040 if (full_update) {
2041 for (i = 0; i < size; src ++, dst ++, i ++)
2042 console_write_ch(dst, VMEM2CHTYPE(*src));
2043
2044 dpy_update(s->ds, 0, 0, width, height);
2045 } else {
2046 c_max = 0;
2047
2048 for (i = 0; i < size; src ++, dst ++, i ++) {
2049 console_write_ch(&val, VMEM2CHTYPE(*src));
2050 if (*dst != val) {
2051 *dst = val;
2052 c_max = i;
2053 break;
2054 }
2055 }
2056 c_min = i;
2057 for (; i < size; src ++, dst ++, i ++) {
2058 console_write_ch(&val, VMEM2CHTYPE(*src));
2059 if (*dst != val) {
2060 *dst = val;
2061 c_max = i;
2062 }
2063 }
2064
2065 if (c_min <= c_max) {
2066 i = TEXTMODE_Y(c_min);
2067 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2068 }
2069 }
2070
2071 return;
2072 case GMODE_GRAPH:
2073 if (!full_update)
2074 return;
2075
2076 s->get_resolution(s, &width, &height);
2077 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2078 width, height);
2079 break;
2080 case GMODE_BLANK:
2081 default:
2082 if (!full_update)
2083 return;
2084
2085 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2086 break;
2087 }
2088
2089 /* Display a message */
2090 s->last_width = 60;
2091 s->last_height = height = 3;
2092 dpy_cursor(s->ds, -1, -1);
2093 s->ds->surface->width = s->last_width;
2094 s->ds->surface->height = height;
2095 dpy_resize(s->ds);
2096
2097 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2098 console_write_ch(dst ++, ' ');
2099
2100 size = strlen(msg_buffer);
2101 width = (s->last_width - size) / 2;
2102 dst = chardata + s->last_width + width;
2103 for (i = 0; i < size; i ++)
2104 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2105
2106 dpy_update(s->ds, 0, 0, s->last_width, height);
2107 }
2108
2109 static CPUReadMemoryFunc *vga_mem_read[3] = {
2110 vga_mem_readb,
2111 vga_mem_readw,
2112 vga_mem_readl,
2113 };
2114
2115 static CPUWriteMemoryFunc *vga_mem_write[3] = {
2116 vga_mem_writeb,
2117 vga_mem_writew,
2118 vga_mem_writel,
2119 };
2120
2121 static void vga_save(QEMUFile *f, void *opaque)
2122 {
2123 VGAState *s = opaque;
2124 int i;
2125
2126 if (s->pci_dev)
2127 pci_device_save(s->pci_dev, f);
2128
2129 qemu_put_be32s(f, &s->latch);
2130 qemu_put_8s(f, &s->sr_index);
2131 qemu_put_buffer(f, s->sr, 8);
2132 qemu_put_8s(f, &s->gr_index);
2133 qemu_put_buffer(f, s->gr, 16);
2134 qemu_put_8s(f, &s->ar_index);
2135 qemu_put_buffer(f, s->ar, 21);
2136 qemu_put_be32(f, s->ar_flip_flop);
2137 qemu_put_8s(f, &s->cr_index);
2138 qemu_put_buffer(f, s->cr, 256);
2139 qemu_put_8s(f, &s->msr);
2140 qemu_put_8s(f, &s->fcr);
2141 qemu_put_byte(f, s->st00);
2142 qemu_put_8s(f, &s->st01);
2143
2144 qemu_put_8s(f, &s->dac_state);
2145 qemu_put_8s(f, &s->dac_sub_index);
2146 qemu_put_8s(f, &s->dac_read_index);
2147 qemu_put_8s(f, &s->dac_write_index);
2148 qemu_put_buffer(f, s->dac_cache, 3);
2149 qemu_put_buffer(f, s->palette, 768);
2150
2151 qemu_put_be32(f, s->bank_offset);
2152 #ifdef CONFIG_BOCHS_VBE
2153 qemu_put_byte(f, 1);
2154 qemu_put_be16s(f, &s->vbe_index);
2155 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2156 qemu_put_be16s(f, &s->vbe_regs[i]);
2157 qemu_put_be32s(f, &s->vbe_start_addr);
2158 qemu_put_be32s(f, &s->vbe_line_offset);
2159 qemu_put_be32s(f, &s->vbe_bank_mask);
2160 #else
2161 qemu_put_byte(f, 0);
2162 #endif
2163 }
2164
2165 static int vga_load(QEMUFile *f, void *opaque, int version_id)
2166 {
2167 VGAState *s = opaque;
2168 int is_vbe, i, ret;
2169
2170 if (version_id > 2)
2171 return -EINVAL;
2172
2173 if (s->pci_dev && version_id >= 2) {
2174 ret = pci_device_load(s->pci_dev, f);
2175 if (ret < 0)
2176 return ret;
2177 }
2178
2179 qemu_get_be32s(f, &s->latch);
2180 qemu_get_8s(f, &s->sr_index);
2181 qemu_get_buffer(f, s->sr, 8);
2182 qemu_get_8s(f, &s->gr_index);
2183 qemu_get_buffer(f, s->gr, 16);
2184 qemu_get_8s(f, &s->ar_index);
2185 qemu_get_buffer(f, s->ar, 21);
2186 s->ar_flip_flop=qemu_get_be32(f);
2187 qemu_get_8s(f, &s->cr_index);
2188 qemu_get_buffer(f, s->cr, 256);
2189 qemu_get_8s(f, &s->msr);
2190 qemu_get_8s(f, &s->fcr);
2191 qemu_get_8s(f, &s->st00);
2192 qemu_get_8s(f, &s->st01);
2193
2194 qemu_get_8s(f, &s->dac_state);
2195 qemu_get_8s(f, &s->dac_sub_index);
2196 qemu_get_8s(f, &s->dac_read_index);
2197 qemu_get_8s(f, &s->dac_write_index);
2198 qemu_get_buffer(f, s->dac_cache, 3);
2199 qemu_get_buffer(f, s->palette, 768);
2200
2201 s->bank_offset=qemu_get_be32(f);
2202 is_vbe = qemu_get_byte(f);
2203 #ifdef CONFIG_BOCHS_VBE
2204 if (!is_vbe)
2205 return -EINVAL;
2206 qemu_get_be16s(f, &s->vbe_index);
2207 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2208 qemu_get_be16s(f, &s->vbe_regs[i]);
2209 qemu_get_be32s(f, &s->vbe_start_addr);
2210 qemu_get_be32s(f, &s->vbe_line_offset);
2211 qemu_get_be32s(f, &s->vbe_bank_mask);
2212 #else
2213 if (is_vbe)
2214 return -EINVAL;
2215 #endif
2216
2217 /* force refresh */
2218 s->graphic_mode = -1;
2219 return 0;
2220 }
2221
2222 typedef struct PCIVGAState {
2223 PCIDevice dev;
2224 VGAState vga_state;
2225 } PCIVGAState;
2226
2227 void vga_dirty_log_start(VGAState *s)
2228 {
2229 if (kvm_enabled() && s->map_addr)
2230 kvm_log_start(s->map_addr, s->map_end - s->map_addr);
2231
2232 if (kvm_enabled() && s->lfb_vram_mapped) {
2233 kvm_log_start(isa_mem_base + 0xa0000, 0x8000);
2234 kvm_log_start(isa_mem_base + 0xa8000, 0x8000);
2235 }
2236 }
2237
2238 static void vga_map(PCIDevice *pci_dev, int region_num,
2239 uint32_t addr, uint32_t size, int type)
2240 {
2241 PCIVGAState *d = (PCIVGAState *)pci_dev;
2242 VGAState *s = &d->vga_state;
2243 if (region_num == PCI_ROM_SLOT) {
2244 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
2245 } else {
2246 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
2247 s->map_addr = addr;
2248 s->map_end = addr + s->vram_size;
2249 vga_dirty_log_start(s);
2250 }
2251 }
2252
2253 void vga_common_init(VGAState *s, int vga_ram_size)
2254 {
2255 int i, j, v, b;
2256
2257 for(i = 0;i < 256; i++) {
2258 v = 0;
2259 for(j = 0; j < 8; j++) {
2260 v |= ((i >> j) & 1) << (j * 4);
2261 }
2262 expand4[i] = v;
2263
2264 v = 0;
2265 for(j = 0; j < 4; j++) {
2266 v |= ((i >> (2 * j)) & 3) << (j * 4);
2267 }
2268 expand2[i] = v;
2269 }
2270 for(i = 0; i < 16; i++) {
2271 v = 0;
2272 for(j = 0; j < 4; j++) {
2273 b = ((i >> j) & 1);
2274 v |= b << (2 * j);
2275 v |= b << (2 * j + 1);
2276 }
2277 expand4to8[i] = v;
2278 }
2279
2280 s->vram_offset = qemu_ram_alloc(vga_ram_size);
2281 s->vram_ptr = qemu_get_ram_ptr(s->vram_offset);
2282 s->vram_size = vga_ram_size;
2283 s->get_bpp = vga_get_bpp;
2284 s->get_offsets = vga_get_offsets;
2285 s->get_resolution = vga_get_resolution;
2286 s->update = vga_update_display;
2287 s->invalidate = vga_invalidate_display;
2288 s->screen_dump = vga_screen_dump;
2289 s->text_update = vga_update_text;
2290 switch (vga_retrace_method) {
2291 case VGA_RETRACE_DUMB:
2292 s->retrace = vga_dumb_retrace;
2293 s->update_retrace_info = vga_dumb_update_retrace_info;
2294 break;
2295
2296 case VGA_RETRACE_PRECISE:
2297 s->retrace = vga_precise_retrace;
2298 s->update_retrace_info = vga_precise_update_retrace_info;
2299 break;
2300 }
2301 vga_reset(s);
2302 }
2303
2304 /* used by both ISA and PCI */
2305 void vga_init(VGAState *s)
2306 {
2307 int vga_io_memory;
2308
2309 qemu_register_reset(vga_reset, 0, s);
2310 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2311
2312 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2313
2314 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2315 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2316 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2317 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2318
2319 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2320
2321 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2322 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2323 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2324 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2325 s->bank_offset = 0;
2326
2327 #ifdef CONFIG_BOCHS_VBE
2328 #if defined (TARGET_I386)
2329 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2330 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2331
2332 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2333 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2334
2335 /* old Bochs IO ports */
2336 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
2337 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
2338
2339 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
2340 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
2341 #else
2342 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2343 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2344
2345 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2346 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2347 #endif
2348 #endif /* CONFIG_BOCHS_VBE */
2349
2350 vga_io_memory = cpu_register_io_memory(vga_mem_read, vga_mem_write, s);
2351 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
2352 vga_io_memory);
2353 qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
2354 }
2355
2356 /* Memory mapped interface */
2357 static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr)
2358 {
2359 VGAState *s = opaque;
2360
2361 return vga_ioport_read(s, addr >> s->it_shift) & 0xff;
2362 }
2363
2364 static void vga_mm_writeb (void *opaque,
2365 target_phys_addr_t addr, uint32_t value)
2366 {
2367 VGAState *s = opaque;
2368
2369 vga_ioport_write(s, addr >> s->it_shift, value & 0xff);
2370 }
2371
2372 static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr)
2373 {
2374 VGAState *s = opaque;
2375
2376 return vga_ioport_read(s, addr >> s->it_shift) & 0xffff;
2377 }
2378
2379 static void vga_mm_writew (void *opaque,
2380 target_phys_addr_t addr, uint32_t value)
2381 {
2382 VGAState *s = opaque;
2383
2384 vga_ioport_write(s, addr >> s->it_shift, value & 0xffff);
2385 }
2386
2387 static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr)
2388 {
2389 VGAState *s = opaque;
2390
2391 return vga_ioport_read(s, addr >> s->it_shift);
2392 }
2393
2394 static void vga_mm_writel (void *opaque,
2395 target_phys_addr_t addr, uint32_t value)
2396 {
2397 VGAState *s = opaque;
2398
2399 vga_ioport_write(s, addr >> s->it_shift, value);
2400 }
2401
2402 static CPUReadMemoryFunc *vga_mm_read_ctrl[] = {
2403 &vga_mm_readb,
2404 &vga_mm_readw,
2405 &vga_mm_readl,
2406 };
2407
2408 static CPUWriteMemoryFunc *vga_mm_write_ctrl[] = {
2409 &vga_mm_writeb,
2410 &vga_mm_writew,
2411 &vga_mm_writel,
2412 };
2413
2414 static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base,
2415 target_phys_addr_t ctrl_base, int it_shift)
2416 {
2417 int s_ioport_ctrl, vga_io_memory;
2418
2419 s->it_shift = it_shift;
2420 s_ioport_ctrl = cpu_register_io_memory(vga_mm_read_ctrl, vga_mm_write_ctrl, s);
2421 vga_io_memory = cpu_register_io_memory(vga_mem_read, vga_mem_write, s);
2422
2423 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2424
2425 cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl);
2426 s->bank_offset = 0;
2427 cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory);
2428 qemu_register_coalesced_mmio(vram_base + 0x000a0000, 0x20000);
2429 }
2430
2431 int isa_vga_init(void)
2432 {
2433 VGAState *s;
2434
2435 s = qemu_mallocz(sizeof(VGAState));
2436
2437 vga_common_init(s, VGA_RAM_SIZE);
2438 vga_init(s);
2439
2440 s->ds = graphic_console_init(s->update, s->invalidate,
2441 s->screen_dump, s->text_update, s);
2442
2443 #ifdef CONFIG_BOCHS_VBE
2444 /* XXX: use optimized standard vga accesses */
2445 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2446 VGA_RAM_SIZE, s->vram_offset);
2447 #endif
2448 return 0;
2449 }
2450
2451 int isa_vga_mm_init(target_phys_addr_t vram_base,
2452 target_phys_addr_t ctrl_base, int it_shift)
2453 {
2454 VGAState *s;
2455
2456 s = qemu_mallocz(sizeof(VGAState));
2457
2458 vga_common_init(s, VGA_RAM_SIZE);
2459 vga_mm_init(s, vram_base, ctrl_base, it_shift);
2460
2461 s->ds = graphic_console_init(s->update, s->invalidate,
2462 s->screen_dump, s->text_update, s);
2463
2464 #ifdef CONFIG_BOCHS_VBE
2465 /* XXX: use optimized standard vga accesses */
2466 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2467 VGA_RAM_SIZE, s->vram_offset);
2468 #endif
2469 return 0;
2470 }
2471
2472 static void pci_vga_write_config(PCIDevice *d,
2473 uint32_t address, uint32_t val, int len)
2474 {
2475 PCIVGAState *pvs = container_of(d, PCIVGAState, dev);
2476 VGAState *s = &pvs->vga_state;
2477
2478 pci_default_write_config(d, address, val, len);
2479 if (s->map_addr && pvs->dev.io_regions[0].addr == -1)
2480 s->map_addr = 0;
2481 }
2482
2483 int pci_vga_init(PCIBus *bus,
2484 unsigned long vga_bios_offset, int vga_bios_size)
2485 {
2486 PCIVGAState *d;
2487 VGAState *s;
2488 uint8_t *pci_conf;
2489
2490 d = (PCIVGAState *)pci_register_device(bus, "VGA",
2491 sizeof(PCIVGAState),
2492 -1, NULL, pci_vga_write_config);
2493 if (!d)
2494 return -1;
2495 s = &d->vga_state;
2496
2497 vga_common_init(s, VGA_RAM_SIZE);
2498 vga_init(s);
2499
2500 s->ds = graphic_console_init(s->update, s->invalidate,
2501 s->screen_dump, s->text_update, s);
2502
2503 s->pci_dev = &d->dev;
2504
2505 pci_conf = d->dev.config;
2506 // dummy VGA (same as Bochs ID)
2507 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU);
2508 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA);
2509 pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
2510 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
2511
2512 /* XXX: VGA_RAM_SIZE must be a power of two */
2513 pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
2514 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2515 if (vga_bios_size != 0) {
2516 unsigned int bios_total_size;
2517 s->bios_offset = vga_bios_offset;
2518 s->bios_size = vga_bios_size;
2519 /* must be a power of two */
2520 bios_total_size = 1;
2521 while (bios_total_size < vga_bios_size)
2522 bios_total_size <<= 1;
2523 pci_register_bar(&d->dev, PCI_ROM_SLOT, bios_total_size,
2524 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2525 }
2526 return 0;
2527 }
2528
2529 /********************************************************/
2530 /* vga screen dump */
2531
2532 static void vga_save_dpy_update(DisplayState *s,
2533 int x, int y, int w, int h)
2534 {
2535 }
2536
2537 static void vga_save_dpy_resize(DisplayState *s)
2538 {
2539 }
2540
2541 static void vga_save_dpy_refresh(DisplayState *s)
2542 {
2543 }
2544
2545 int ppm_save(const char *filename, struct DisplaySurface *ds)
2546 {
2547 FILE *f;
2548 uint8_t *d, *d1;
2549 uint32_t v;
2550 int y, x;
2551 uint8_t r, g, b;
2552
2553 f = fopen(filename, "wb");
2554 if (!f)
2555 return -1;
2556 fprintf(f, "P6\n%d %d\n%d\n",
2557 ds->width, ds->height, 255);
2558 d1 = ds->data;
2559 for(y = 0; y < ds->height; y++) {
2560 d = d1;
2561 for(x = 0; x < ds->width; x++) {
2562 if (ds->pf.bits_per_pixel == 32)
2563 v = *(uint32_t *)d;
2564 else
2565 v = (uint32_t) (*(uint16_t *)d);
2566 r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 /
2567 (ds->pf.rmax + 1);
2568 g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 /
2569 (ds->pf.gmax + 1);
2570 b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 /
2571 (ds->pf.bmax + 1);
2572 fputc(r, f);
2573 fputc(g, f);
2574 fputc(b, f);
2575 d += ds->pf.bytes_per_pixel;
2576 }
2577 d1 += ds->linesize;
2578 }
2579 fclose(f);
2580 return 0;
2581 }
2582
2583 static void vga_screen_dump_blank(VGAState *s, const char *filename)
2584 {
2585 FILE *f;
2586 unsigned int y, x, w, h;
2587 unsigned char blank_sample[3] = { 0, 0, 0 };
2588
2589 w = s->last_scr_width;
2590 h = s->last_scr_height;
2591
2592 f = fopen(filename, "wb");
2593 if (!f)
2594 return;
2595 fprintf(f, "P6\n%d %d\n%d\n", w, h, 255);
2596 for (y = 0; y < h; y++) {
2597 for (x = 0; x < w; x++) {
2598 fwrite(blank_sample, 3, 1, f);
2599 }
2600 }
2601 fclose(f);
2602 }
2603
2604 static void vga_screen_dump_common(VGAState *s, const char *filename,
2605 int w, int h)
2606 {
2607 DisplayState *saved_ds, ds1, *ds = &ds1;
2608 DisplayChangeListener dcl;
2609
2610 /* XXX: this is a little hackish */
2611 vga_invalidate_display(s);
2612 saved_ds = s->ds;
2613
2614 memset(ds, 0, sizeof(DisplayState));
2615 memset(&dcl, 0, sizeof(DisplayChangeListener));
2616 dcl.dpy_update = vga_save_dpy_update;
2617 dcl.dpy_resize = vga_save_dpy_resize;
2618 dcl.dpy_refresh = vga_save_dpy_refresh;
2619 register_displaychangelistener(ds, &dcl);
2620 ds->allocator = &default_allocator;
2621 ds->surface = qemu_create_displaysurface(ds, w, h);
2622
2623 s->ds = ds;
2624 s->graphic_mode = -1;
2625 vga_update_display(s);
2626
2627 ppm_save(filename, ds->surface);
2628
2629 qemu_free_displaysurface(ds);
2630 s->ds = saved_ds;
2631 }
2632
2633 static void vga_screen_dump_graphic(VGAState *s, const char *filename)
2634 {
2635 int w, h;
2636
2637 s->get_resolution(s, &w, &h);
2638 vga_screen_dump_common(s, filename, w, h);
2639 }
2640
2641 static void vga_screen_dump_text(VGAState *s, const char *filename)
2642 {
2643 int w, h, cwidth, cheight;
2644
2645 vga_get_text_resolution(s, &w, &h, &cwidth, &cheight);
2646 vga_screen_dump_common(s, filename, w * cwidth, h * cheight);
2647 }
2648
2649 /* save the vga display in a PPM image even if no display is
2650 available */
2651 static void vga_screen_dump(void *opaque, const char *filename)
2652 {
2653 VGAState *s = (VGAState *)opaque;
2654
2655 if (!(s->ar_index & 0x20))
2656 vga_screen_dump_blank(s, filename);
2657 else if (s->gr[6] & 1)
2658 vga_screen_dump_graphic(s, filename);
2659 else
2660 vga_screen_dump_text(s, filename);
2661 vga_invalidate_display(s);
2662 }
Patches shipped by Fedora