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Fix vga on PPC
[qemu/mini2440/sniper_sniper_test.git] / hw / vga.c
blob776ead0bfba681beb01825667f0dd2bc2307db99
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
1250 /*
1251 * Text mode update
1252 * Missing:
1253 * - double scan
1254 * - double width
1255 * - underline
1256 * - flashing
1257 */
1258 static void vga_draw_text(VGAState *s, int full_update)
1259 {
1260 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1261 int cx_min, cx_max, linesize, x_incr;
1262 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1263 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1264 const uint8_t *font_ptr, *font_base[2];
1265 int dup9, line_offset, depth_index;
1266 uint32_t *palette;
1267 uint32_t *ch_attr_ptr;
1268 vga_draw_glyph8_func *vga_draw_glyph8;
1269 vga_draw_glyph9_func *vga_draw_glyph9;
1270
1271 vga_dirty_log_stop(s);
1272
1273 /* compute font data address (in plane 2) */
1274 v = s->sr[3];
1275 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1276 if (offset != s->font_offsets[0]) {
1277 s->font_offsets[0] = offset;
1278 full_update = 1;
1279 }
1280 font_base[0] = s->vram_ptr + offset;
1281
1282 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1283 font_base[1] = s->vram_ptr + offset;
1284 if (offset != s->font_offsets[1]) {
1285 s->font_offsets[1] = offset;
1286 full_update = 1;
1287 }
1288 if (s->plane_updated & (1 << 2)) {
1289 /* if the plane 2 was modified since the last display, it
1290 indicates the font may have been modified */
1291 s->plane_updated = 0;
1292 full_update = 1;
1293 }
1294 full_update |= update_basic_params(s);
1295
1296 line_offset = s->line_offset;
1297 s1 = s->vram_ptr + (s->start_addr * 4);
1298
1299 vga_get_text_resolution(s, &width, &height, &cw, &cheight);
1300 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1301 if ((height * width) > CH_ATTR_SIZE) {
1302 /* better than nothing: exit if transient size is too big */
1303 return;
1304 }
1305
1306 if (width != s->last_width || height != s->last_height ||
1307 cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
1308 s->last_scr_width = width * cw;
1309 s->last_scr_height = height * cheight;
1310 qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height);
1311 s->last_depth = 0;
1312 s->last_width = width;
1313 s->last_height = height;
1314 s->last_ch = cheight;
1315 s->last_cw = cw;
1316 full_update = 1;
1317 }
1318 s->rgb_to_pixel =
1319 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1320 full_update |= update_palette16(s);
1321 palette = s->last_palette;
1322 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1323
1324 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1325 if (cursor_offset != s->cursor_offset ||
1326 s->cr[0xa] != s->cursor_start ||
1327 s->cr[0xb] != s->cursor_end) {
1328 /* if the cursor position changed, we update the old and new
1329 chars */
1330 if (s->cursor_offset < CH_ATTR_SIZE)
1331 s->last_ch_attr[s->cursor_offset] = -1;
1332 if (cursor_offset < CH_ATTR_SIZE)
1333 s->last_ch_attr[cursor_offset] = -1;
1334 s->cursor_offset = cursor_offset;
1335 s->cursor_start = s->cr[0xa];
1336 s->cursor_end = s->cr[0xb];
1337 }
1338 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1339
1340 depth_index = get_depth_index(s->ds);
1341 if (cw == 16)
1342 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1343 else
1344 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1345 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1346
1347 dest = ds_get_data(s->ds);
1348 linesize = ds_get_linesize(s->ds);
1349 ch_attr_ptr = s->last_ch_attr;
1350 for(cy = 0; cy < height; cy++) {
1351 d1 = dest;
1352 src = s1;
1353 cx_min = width;
1354 cx_max = -1;
1355 for(cx = 0; cx < width; cx++) {
1356 ch_attr = *(uint16_t *)src;
1357 if (full_update || ch_attr != *ch_attr_ptr) {
1358 if (cx < cx_min)
1359 cx_min = cx;
1360 if (cx > cx_max)
1361 cx_max = cx;
1362 *ch_attr_ptr = ch_attr;
1363 #ifdef WORDS_BIGENDIAN
1364 ch = ch_attr >> 8;
1365 cattr = ch_attr & 0xff;
1366 #else
1367 ch = ch_attr & 0xff;
1368 cattr = ch_attr >> 8;
1369 #endif
1370 font_ptr = font_base[(cattr >> 3) & 1];
1371 font_ptr += 32 * 4 * ch;
1372 bgcol = palette[cattr >> 4];
1373 fgcol = palette[cattr & 0x0f];
1374 if (cw != 9) {
1375 vga_draw_glyph8(d1, linesize,
1376 font_ptr, cheight, fgcol, bgcol);
1377 } else {
1378 dup9 = 0;
1379 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1380 dup9 = 1;
1381 vga_draw_glyph9(d1, linesize,
1382 font_ptr, cheight, fgcol, bgcol, dup9);
1383 }
1384 if (src == cursor_ptr &&
1385 !(s->cr[0x0a] & 0x20)) {
1386 int line_start, line_last, h;
1387 /* draw the cursor */
1388 line_start = s->cr[0x0a] & 0x1f;
1389 line_last = s->cr[0x0b] & 0x1f;
1390 /* XXX: check that */
1391 if (line_last > cheight - 1)
1392 line_last = cheight - 1;
1393 if (line_last >= line_start && line_start < cheight) {
1394 h = line_last - line_start + 1;
1395 d = d1 + linesize * line_start;
1396 if (cw != 9) {
1397 vga_draw_glyph8(d, linesize,
1398 cursor_glyph, h, fgcol, bgcol);
1399 } else {
1400 vga_draw_glyph9(d, linesize,
1401 cursor_glyph, h, fgcol, bgcol, 1);
1402 }
1403 }
1404 }
1405 }
1406 d1 += x_incr;
1407 src += 4;
1408 ch_attr_ptr++;
1409 }
1410 if (cx_max != -1) {
1411 dpy_update(s->ds, cx_min * cw, cy * cheight,
1412 (cx_max - cx_min + 1) * cw, cheight);
1413 }
1414 dest += linesize * cheight;
1415 s1 += line_offset;
1416 }
1417 }
1418
1419 enum {
1420 VGA_DRAW_LINE2,
1421 VGA_DRAW_LINE2D2,
1422 VGA_DRAW_LINE4,
1423 VGA_DRAW_LINE4D2,
1424 VGA_DRAW_LINE8D2,
1425 VGA_DRAW_LINE8,
1426 VGA_DRAW_LINE15,
1427 VGA_DRAW_LINE16,
1428 VGA_DRAW_LINE24,
1429 VGA_DRAW_LINE32,
1430 VGA_DRAW_LINE_NB,
1431 };
1432
1433 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1434 vga_draw_line2_8,
1435 vga_draw_line2_16,
1436 vga_draw_line2_16,
1437 vga_draw_line2_32,
1438 vga_draw_line2_32,
1439 vga_draw_line2_16,
1440 vga_draw_line2_16,
1441
1442 vga_draw_line2d2_8,
1443 vga_draw_line2d2_16,
1444 vga_draw_line2d2_16,
1445 vga_draw_line2d2_32,
1446 vga_draw_line2d2_32,
1447 vga_draw_line2d2_16,
1448 vga_draw_line2d2_16,
1449
1450 vga_draw_line4_8,
1451 vga_draw_line4_16,
1452 vga_draw_line4_16,
1453 vga_draw_line4_32,
1454 vga_draw_line4_32,
1455 vga_draw_line4_16,
1456 vga_draw_line4_16,
1457
1458 vga_draw_line4d2_8,
1459 vga_draw_line4d2_16,
1460 vga_draw_line4d2_16,
1461 vga_draw_line4d2_32,
1462 vga_draw_line4d2_32,
1463 vga_draw_line4d2_16,
1464 vga_draw_line4d2_16,
1465
1466 vga_draw_line8d2_8,
1467 vga_draw_line8d2_16,
1468 vga_draw_line8d2_16,
1469 vga_draw_line8d2_32,
1470 vga_draw_line8d2_32,
1471 vga_draw_line8d2_16,
1472 vga_draw_line8d2_16,
1473
1474 vga_draw_line8_8,
1475 vga_draw_line8_16,
1476 vga_draw_line8_16,
1477 vga_draw_line8_32,
1478 vga_draw_line8_32,
1479 vga_draw_line8_16,
1480 vga_draw_line8_16,
1481
1482 vga_draw_line15_8,
1483 vga_draw_line15_15,
1484 vga_draw_line15_16,
1485 vga_draw_line15_32,
1486 vga_draw_line15_32bgr,
1487 vga_draw_line15_15bgr,
1488 vga_draw_line15_16bgr,
1489
1490 vga_draw_line16_8,
1491 vga_draw_line16_15,
1492 vga_draw_line16_16,
1493 vga_draw_line16_32,
1494 vga_draw_line16_32bgr,
1495 vga_draw_line16_15bgr,
1496 vga_draw_line16_16bgr,
1497
1498 vga_draw_line24_8,
1499 vga_draw_line24_15,
1500 vga_draw_line24_16,
1501 vga_draw_line24_32,
1502 vga_draw_line24_32bgr,
1503 vga_draw_line24_15bgr,
1504 vga_draw_line24_16bgr,
1505
1506 vga_draw_line32_8,
1507 vga_draw_line32_15,
1508 vga_draw_line32_16,
1509 vga_draw_line32_32,
1510 vga_draw_line32_32bgr,
1511 vga_draw_line32_15bgr,
1512 vga_draw_line32_16bgr,
1513 };
1514
1515 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1516 rgb_to_pixel8_dup,
1517 rgb_to_pixel15_dup,
1518 rgb_to_pixel16_dup,
1519 rgb_to_pixel32_dup,
1520 rgb_to_pixel32bgr_dup,
1521 rgb_to_pixel15bgr_dup,
1522 rgb_to_pixel16bgr_dup,
1523 };
1524
1525 static int vga_get_bpp(VGAState *s)
1526 {
1527 int ret;
1528 #ifdef CONFIG_BOCHS_VBE
1529 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1530 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1531 } else
1532 #endif
1533 {
1534 ret = 0;
1535 }
1536 return ret;
1537 }
1538
1539 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1540 {
1541 int width, height;
1542
1543 #ifdef CONFIG_BOCHS_VBE
1544 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1545 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1546 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1547 } else
1548 #endif
1549 {
1550 width = (s->cr[0x01] + 1) * 8;
1551 height = s->cr[0x12] |
1552 ((s->cr[0x07] & 0x02) << 7) |
1553 ((s->cr[0x07] & 0x40) << 3);
1554 height = (height + 1);
1555 }
1556 *pwidth = width;
1557 *pheight = height;
1558 }
1559
1560 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1561 {
1562 int y;
1563 if (y1 >= VGA_MAX_HEIGHT)
1564 return;
1565 if (y2 >= VGA_MAX_HEIGHT)
1566 y2 = VGA_MAX_HEIGHT;
1567 for(y = y1; y < y2; y++) {
1568 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1569 }
1570 }
1571
1572 static void vga_sync_dirty_bitmap(VGAState *s)
1573 {
1574 if (s->map_addr)
1575 cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end);
1576
1577 if (s->lfb_vram_mapped) {
1578 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000);
1579 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000);
1580 }
1581 vga_dirty_log_start(s);
1582 }
1583
1584 /*
1585 * graphic modes
1586 */
1587 static void vga_draw_graphic(VGAState *s, int full_update)
1588 {
1589 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask, depth;
1590 int width, height, shift_control, line_offset, page0, page1, bwidth, bits;
1591 int disp_width, multi_scan, multi_run;
1592 uint8_t *d;
1593 uint32_t v, addr1, addr;
1594 vga_draw_line_func *vga_draw_line;
1595
1596 full_update |= update_basic_params(s);
1597
1598 if (!full_update)
1599 vga_sync_dirty_bitmap(s);
1600
1601 s->get_resolution(s, &width, &height);
1602 disp_width = width;
1603
1604 shift_control = (s->gr[0x05] >> 5) & 3;
1605 double_scan = (s->cr[0x09] >> 7);
1606 if (shift_control != 1) {
1607 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1608 } else {
1609 /* in CGA modes, multi_scan is ignored */
1610 /* XXX: is it correct ? */
1611 multi_scan = double_scan;
1612 }
1613 multi_run = multi_scan;
1614 if (shift_control != s->shift_control ||
1615 double_scan != s->double_scan) {
1616 full_update = 1;
1617 s->shift_control = shift_control;
1618 s->double_scan = double_scan;
1619 }
1620
1621 depth = s->get_bpp(s);
1622 if (s->line_offset != s->last_line_offset ||
1623 disp_width != s->last_width ||
1624 height != s->last_height ||
1625 s->last_depth != depth) {
1626 if (depth == 16 || depth == 32) {
1627 if (is_graphic_console()) {
1628 qemu_free_displaysurface(s->ds->surface);
1629 s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth,
1630 s->line_offset,
1631 s->vram_ptr + (s->start_addr * 4));
1632 dpy_resize(s->ds);
1633 } else {
1634 qemu_console_resize(s->ds, disp_width, height);
1635 }
1636 } else {
1637 qemu_console_resize(s->ds, disp_width, height);
1638 }
1639 s->last_scr_width = disp_width;
1640 s->last_scr_height = height;
1641 s->last_width = disp_width;
1642 s->last_height = height;
1643 s->last_line_offset = s->line_offset;
1644 s->last_depth = depth;
1645 full_update = 1;
1646 } else if (is_graphic_console() && is_buffer_shared(s->ds->surface) &&
1647 (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
1648 s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
1649 dpy_setdata(s->ds);
1650 }
1651
1652 s->rgb_to_pixel =
1653 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1654
1655 if (shift_control == 0) {
1656 full_update |= update_palette16(s);
1657 if (s->sr[0x01] & 8) {
1658 v = VGA_DRAW_LINE4D2;
1659 disp_width <<= 1;
1660 } else {
1661 v = VGA_DRAW_LINE4;
1662 }
1663 bits = 4;
1664 } else if (shift_control == 1) {
1665 full_update |= update_palette16(s);
1666 if (s->sr[0x01] & 8) {
1667 v = VGA_DRAW_LINE2D2;
1668 disp_width <<= 1;
1669 } else {
1670 v = VGA_DRAW_LINE2;
1671 }
1672 bits = 4;
1673 } else {
1674 switch(s->get_bpp(s)) {
1675 default:
1676 case 0:
1677 full_update |= update_palette256(s);
1678 v = VGA_DRAW_LINE8D2;
1679 bits = 4;
1680 break;
1681 case 8:
1682 full_update |= update_palette256(s);
1683 v = VGA_DRAW_LINE8;
1684 bits = 8;
1685 break;
1686 case 15:
1687 v = VGA_DRAW_LINE15;
1688 bits = 16;
1689 break;
1690 case 16:
1691 v = VGA_DRAW_LINE16;
1692 bits = 16;
1693 break;
1694 case 24:
1695 v = VGA_DRAW_LINE24;
1696 bits = 24;
1697 break;
1698 case 32:
1699 v = VGA_DRAW_LINE32;
1700 bits = 32;
1701 break;
1702 }
1703 }
1704 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1705
1706 if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
1707 s->cursor_invalidate(s);
1708
1709 line_offset = s->line_offset;
1710 #if 0
1711 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",
1712 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1713 #endif
1714 addr1 = (s->start_addr * 4);
1715 bwidth = (width * bits + 7) / 8;
1716 y_start = -1;
1717 page_min = 0x7fffffff;
1718 page_max = -1;
1719 d = ds_get_data(s->ds);
1720 linesize = ds_get_linesize(s->ds);
1721 y1 = 0;
1722 for(y = 0; y < height; y++) {
1723 addr = addr1;
1724 if (!(s->cr[0x17] & 1)) {
1725 int shift;
1726 /* CGA compatibility handling */
1727 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1728 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1729 }
1730 if (!(s->cr[0x17] & 2)) {
1731 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1732 }
1733 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1734 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1735 update = full_update |
1736 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1737 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1738 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1739 /* if wide line, can use another page */
1740 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1741 VGA_DIRTY_FLAG);
1742 }
1743 /* explicit invalidation for the hardware cursor */
1744 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1745 if (update) {
1746 if (y_start < 0)
1747 y_start = y;
1748 if (page0 < page_min)
1749 page_min = page0;
1750 if (page1 > page_max)
1751 page_max = page1;
1752 if (!(is_buffer_shared(s->ds->surface))) {
1753 vga_draw_line(s, d, s->vram_ptr + addr, width);
1754 if (s->cursor_draw_line)
1755 s->cursor_draw_line(s, d, y);
1756 }
1757 } else {
1758 if (y_start >= 0) {
1759 /* flush to display */
1760 dpy_update(s->ds, 0, y_start,
1761 disp_width, y - y_start);
1762 y_start = -1;
1763 }
1764 }
1765 if (!multi_run) {
1766 mask = (s->cr[0x17] & 3) ^ 3;
1767 if ((y1 & mask) == mask)
1768 addr1 += line_offset;
1769 y1++;
1770 multi_run = multi_scan;
1771 } else {
1772 multi_run--;
1773 }
1774 /* line compare acts on the displayed lines */
1775 if (y == s->line_compare)
1776 addr1 = 0;
1777 d += linesize;
1778 }
1779 if (y_start >= 0) {
1780 /* flush to display */
1781 dpy_update(s->ds, 0, y_start,
1782 disp_width, y - y_start);
1783 }
1784 /* reset modified pages */
1785 if (page_max != -1) {
1786 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1787 VGA_DIRTY_FLAG);
1788 }
1789 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1790 }
1791
1792 static void vga_draw_blank(VGAState *s, int full_update)
1793 {
1794 int i, w, val;
1795 uint8_t *d;
1796
1797 if (!full_update)
1798 return;
1799 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1800 return;
1801 vga_dirty_log_stop(s);
1802
1803 s->rgb_to_pixel =
1804 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1805 if (ds_get_bits_per_pixel(s->ds) == 8)
1806 val = s->rgb_to_pixel(0, 0, 0);
1807 else
1808 val = 0;
1809 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1810 d = ds_get_data(s->ds);
1811 for(i = 0; i < s->last_scr_height; i++) {
1812 memset(d, val, w);
1813 d += ds_get_linesize(s->ds);
1814 }
1815 dpy_update(s->ds, 0, 0,
1816 s->last_scr_width, s->last_scr_height);
1817 }
1818
1819 #define GMODE_TEXT 0
1820 #define GMODE_GRAPH 1
1821 #define GMODE_BLANK 2
1822
1823 static void vga_update_display(void *opaque)
1824 {
1825 VGAState *s = (VGAState *)opaque;
1826 int full_update, graphic_mode;
1827
1828 if (ds_get_bits_per_pixel(s->ds) == 0) {
1829 /* nothing to do */
1830 } else {
1831 full_update = 0;
1832 if (!(s->ar_index & 0x20)) {
1833 graphic_mode = GMODE_BLANK;
1834 } else {
1835 graphic_mode = s->gr[6] & 1;
1836 }
1837 if (graphic_mode != s->graphic_mode) {
1838 s->graphic_mode = graphic_mode;
1839 full_update = 1;
1840 }
1841 switch(graphic_mode) {
1842 case GMODE_TEXT:
1843 vga_draw_text(s, full_update);
1844 break;
1845 case GMODE_GRAPH:
1846 vga_draw_graphic(s, full_update);
1847 break;
1848 case GMODE_BLANK:
1849 default:
1850 vga_draw_blank(s, full_update);
1851 break;
1852 }
1853 }
1854 }
1855
1856 /* force a full display refresh */
1857 static void vga_invalidate_display(void *opaque)
1858 {
1859 VGAState *s = (VGAState *)opaque;
1860
1861 s->last_width = -1;
1862 s->last_height = -1;
1863 }
1864
1865 void vga_reset(void *opaque)
1866 {
1867 VGAState *s = (VGAState *) opaque;
1868
1869 s->lfb_addr = 0;
1870 s->lfb_end = 0;
1871 s->map_addr = 0;
1872 s->map_end = 0;
1873 s->lfb_vram_mapped = 0;
1874 s->bios_offset = 0;
1875 s->bios_size = 0;
1876 s->sr_index = 0;
1877 memset(s->sr, '\0', sizeof(s->sr));
1878 s->gr_index = 0;
1879 memset(s->gr, '\0', sizeof(s->gr));
1880 s->ar_index = 0;
1881 memset(s->ar, '\0', sizeof(s->ar));
1882 s->ar_flip_flop = 0;
1883 s->cr_index = 0;
1884 memset(s->cr, '\0', sizeof(s->cr));
1885 s->msr = 0;
1886 s->fcr = 0;
1887 s->st00 = 0;
1888 s->st01 = 0;
1889 s->dac_state = 0;
1890 s->dac_sub_index = 0;
1891 s->dac_read_index = 0;
1892 s->dac_write_index = 0;
1893 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1894 s->dac_8bit = 0;
1895 memset(s->palette, '\0', sizeof(s->palette));
1896 s->bank_offset = 0;
1897 #ifdef CONFIG_BOCHS_VBE
1898 s->vbe_index = 0;
1899 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1900 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1901 s->vbe_start_addr = 0;
1902 s->vbe_line_offset = 0;
1903 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1904 #endif
1905 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1906 s->graphic_mode = -1; /* force full update */
1907 s->shift_control = 0;
1908 s->double_scan = 0;
1909 s->line_offset = 0;
1910 s->line_compare = 0;
1911 s->start_addr = 0;
1912 s->plane_updated = 0;
1913 s->last_cw = 0;
1914 s->last_ch = 0;
1915 s->last_width = 0;
1916 s->last_height = 0;
1917 s->last_scr_width = 0;
1918 s->last_scr_height = 0;
1919 s->cursor_start = 0;
1920 s->cursor_end = 0;
1921 s->cursor_offset = 0;
1922 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1923 memset(s->last_palette, '\0', sizeof(s->last_palette));
1924 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1925 switch (vga_retrace_method) {
1926 case VGA_RETRACE_DUMB:
1927 break;
1928 case VGA_RETRACE_PRECISE:
1929 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1930 break;
1931 }
1932 }
1933
1934 #define TEXTMODE_X(x) ((x) % width)
1935 #define TEXTMODE_Y(x) ((x) / width)
1936 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1937 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1938 /* relay text rendering to the display driver
1939 * instead of doing a full vga_update_display() */
1940 static void vga_update_text(void *opaque, console_ch_t *chardata)
1941 {
1942 VGAState *s = (VGAState *) opaque;
1943 int graphic_mode, i, cursor_offset, cursor_visible;
1944 int cw, cheight, width, height, size, c_min, c_max;
1945 uint32_t *src;
1946 console_ch_t *dst, val;
1947 char msg_buffer[80];
1948 int full_update = 0;
1949
1950 if (!(s->ar_index & 0x20)) {
1951 graphic_mode = GMODE_BLANK;
1952 } else {
1953 graphic_mode = s->gr[6] & 1;
1954 }
1955 if (graphic_mode != s->graphic_mode) {
1956 s->graphic_mode = graphic_mode;
1957 full_update = 1;
1958 }
1959 if (s->last_width == -1) {
1960 s->last_width = 0;
1961 full_update = 1;
1962 }
1963
1964 switch (graphic_mode) {
1965 case GMODE_TEXT:
1966 /* TODO: update palette */
1967 full_update |= update_basic_params(s);
1968
1969 /* total width & height */
1970 cheight = (s->cr[9] & 0x1f) + 1;
1971 cw = 8;
1972 if (!(s->sr[1] & 0x01))
1973 cw = 9;
1974 if (s->sr[1] & 0x08)
1975 cw = 16; /* NOTE: no 18 pixel wide */
1976 width = (s->cr[0x01] + 1);
1977 if (s->cr[0x06] == 100) {
1978 /* ugly hack for CGA 160x100x16 - explain me the logic */
1979 height = 100;
1980 } else {
1981 height = s->cr[0x12] |
1982 ((s->cr[0x07] & 0x02) << 7) |
1983 ((s->cr[0x07] & 0x40) << 3);
1984 height = (height + 1) / cheight;
1985 }
1986
1987 size = (height * width);
1988 if (size > CH_ATTR_SIZE) {
1989 if (!full_update)
1990 return;
1991
1992 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
1993 width, height);
1994 break;
1995 }
1996
1997 if (width != s->last_width || height != s->last_height ||
1998 cw != s->last_cw || cheight != s->last_ch) {
1999 s->last_scr_width = width * cw;
2000 s->last_scr_height = height * cheight;
2001 s->ds->surface->width = width;
2002 s->ds->surface->height = height;
2003 dpy_resize(s->ds);
2004 s->last_width = width;
2005 s->last_height = height;
2006 s->last_ch = cheight;
2007 s->last_cw = cw;
2008 full_update = 1;
2009 }
2010
2011 /* Update "hardware" cursor */
2012 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
2013 if (cursor_offset != s->cursor_offset ||
2014 s->cr[0xa] != s->cursor_start ||
2015 s->cr[0xb] != s->cursor_end || full_update) {
2016 cursor_visible = !(s->cr[0xa] & 0x20);
2017 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
2018 dpy_cursor(s->ds,
2019 TEXTMODE_X(cursor_offset),
2020 TEXTMODE_Y(cursor_offset));
2021 else
2022 dpy_cursor(s->ds, -1, -1);
2023 s->cursor_offset = cursor_offset;
2024 s->cursor_start = s->cr[0xa];
2025 s->cursor_end = s->cr[0xb];
2026 }
2027
2028 src = (uint32_t *) s->vram_ptr + s->start_addr;
2029 dst = chardata;
2030
2031 if (full_update) {
2032 for (i = 0; i < size; src ++, dst ++, i ++)
2033 console_write_ch(dst, VMEM2CHTYPE(*src));
2034
2035 dpy_update(s->ds, 0, 0, width, height);
2036 } else {
2037 c_max = 0;
2038
2039 for (i = 0; i < size; src ++, dst ++, i ++) {
2040 console_write_ch(&val, VMEM2CHTYPE(*src));
2041 if (*dst != val) {
2042 *dst = val;
2043 c_max = i;
2044 break;
2045 }
2046 }
2047 c_min = i;
2048 for (; i < size; src ++, dst ++, i ++) {
2049 console_write_ch(&val, VMEM2CHTYPE(*src));
2050 if (*dst != val) {
2051 *dst = val;
2052 c_max = i;
2053 }
2054 }
2055
2056 if (c_min <= c_max) {
2057 i = TEXTMODE_Y(c_min);
2058 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2059 }
2060 }
2061
2062 return;
2063 case GMODE_GRAPH:
2064 if (!full_update)
2065 return;
2066
2067 s->get_resolution(s, &width, &height);
2068 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2069 width, height);
2070 break;
2071 case GMODE_BLANK:
2072 default:
2073 if (!full_update)
2074 return;
2075
2076 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2077 break;
2078 }
2079
2080 /* Display a message */
2081 s->last_width = 60;
2082 s->last_height = height = 3;
2083 dpy_cursor(s->ds, -1, -1);
2084 s->ds->surface->width = s->last_width;
2085 s->ds->surface->height = height;
2086 dpy_resize(s->ds);
2087
2088 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2089 console_write_ch(dst ++, ' ');
2090
2091 size = strlen(msg_buffer);
2092 width = (s->last_width - size) / 2;
2093 dst = chardata + s->last_width + width;
2094 for (i = 0; i < size; i ++)
2095 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2096
2097 dpy_update(s->ds, 0, 0, s->last_width, height);
2098 }
2099
2100 static CPUReadMemoryFunc *vga_mem_read[3] = {
2101 vga_mem_readb,
2102 vga_mem_readw,
2103 vga_mem_readl,
2104 };
2105
2106 static CPUWriteMemoryFunc *vga_mem_write[3] = {
2107 vga_mem_writeb,
2108 vga_mem_writew,
2109 vga_mem_writel,
2110 };
2111
2112 static void vga_save(QEMUFile *f, void *opaque)
2113 {
2114 VGAState *s = opaque;
2115 int i;
2116
2117 if (s->pci_dev)
2118 pci_device_save(s->pci_dev, f);
2119
2120 qemu_put_be32s(f, &s->latch);
2121 qemu_put_8s(f, &s->sr_index);
2122 qemu_put_buffer(f, s->sr, 8);
2123 qemu_put_8s(f, &s->gr_index);
2124 qemu_put_buffer(f, s->gr, 16);
2125 qemu_put_8s(f, &s->ar_index);
2126 qemu_put_buffer(f, s->ar, 21);
2127 qemu_put_be32(f, s->ar_flip_flop);
2128 qemu_put_8s(f, &s->cr_index);
2129 qemu_put_buffer(f, s->cr, 256);
2130 qemu_put_8s(f, &s->msr);
2131 qemu_put_8s(f, &s->fcr);
2132 qemu_put_byte(f, s->st00);
2133 qemu_put_8s(f, &s->st01);
2134
2135 qemu_put_8s(f, &s->dac_state);
2136 qemu_put_8s(f, &s->dac_sub_index);
2137 qemu_put_8s(f, &s->dac_read_index);
2138 qemu_put_8s(f, &s->dac_write_index);
2139 qemu_put_buffer(f, s->dac_cache, 3);
2140 qemu_put_buffer(f, s->palette, 768);
2141
2142 qemu_put_be32(f, s->bank_offset);
2143 #ifdef CONFIG_BOCHS_VBE
2144 qemu_put_byte(f, 1);
2145 qemu_put_be16s(f, &s->vbe_index);
2146 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2147 qemu_put_be16s(f, &s->vbe_regs[i]);
2148 qemu_put_be32s(f, &s->vbe_start_addr);
2149 qemu_put_be32s(f, &s->vbe_line_offset);
2150 qemu_put_be32s(f, &s->vbe_bank_mask);
2151 #else
2152 qemu_put_byte(f, 0);
2153 #endif
2154 }
2155
2156 static int vga_load(QEMUFile *f, void *opaque, int version_id)
2157 {
2158 VGAState *s = opaque;
2159 int is_vbe, i, ret;
2160
2161 if (version_id > 2)
2162 return -EINVAL;
2163
2164 if (s->pci_dev && version_id >= 2) {
2165 ret = pci_device_load(s->pci_dev, f);
2166 if (ret < 0)
2167 return ret;
2168 }
2169
2170 qemu_get_be32s(f, &s->latch);
2171 qemu_get_8s(f, &s->sr_index);
2172 qemu_get_buffer(f, s->sr, 8);
2173 qemu_get_8s(f, &s->gr_index);
2174 qemu_get_buffer(f, s->gr, 16);
2175 qemu_get_8s(f, &s->ar_index);
2176 qemu_get_buffer(f, s->ar, 21);
2177 s->ar_flip_flop=qemu_get_be32(f);
2178 qemu_get_8s(f, &s->cr_index);
2179 qemu_get_buffer(f, s->cr, 256);
2180 qemu_get_8s(f, &s->msr);
2181 qemu_get_8s(f, &s->fcr);
2182 qemu_get_8s(f, &s->st00);
2183 qemu_get_8s(f, &s->st01);
2184
2185 qemu_get_8s(f, &s->dac_state);
2186 qemu_get_8s(f, &s->dac_sub_index);
2187 qemu_get_8s(f, &s->dac_read_index);
2188 qemu_get_8s(f, &s->dac_write_index);
2189 qemu_get_buffer(f, s->dac_cache, 3);
2190 qemu_get_buffer(f, s->palette, 768);
2191
2192 s->bank_offset=qemu_get_be32(f);
2193 is_vbe = qemu_get_byte(f);
2194 #ifdef CONFIG_BOCHS_VBE
2195 if (!is_vbe)
2196 return -EINVAL;
2197 qemu_get_be16s(f, &s->vbe_index);
2198 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2199 qemu_get_be16s(f, &s->vbe_regs[i]);
2200 qemu_get_be32s(f, &s->vbe_start_addr);
2201 qemu_get_be32s(f, &s->vbe_line_offset);
2202 qemu_get_be32s(f, &s->vbe_bank_mask);
2203 #else
2204 if (is_vbe)
2205 return -EINVAL;
2206 #endif
2207
2208 /* force refresh */
2209 s->graphic_mode = -1;
2210 return 0;
2211 }
2212
2213 typedef struct PCIVGAState {
2214 PCIDevice dev;
2215 VGAState vga_state;
2216 } PCIVGAState;
2217
2218 void vga_dirty_log_start(VGAState *s)
2219 {
2220 if (kvm_enabled() && s->map_addr)
2221 kvm_log_start(s->map_addr, s->map_end - s->map_addr);
2222
2223 if (kvm_enabled() && s->lfb_vram_mapped) {
2224 kvm_log_start(isa_mem_base + 0xa0000, 0x8000);
2225 kvm_log_start(isa_mem_base + 0xa8000, 0x8000);
2226 }
2227 }
2228
2229 void vga_dirty_log_stop(VGAState *s)
2230 {
2231 if (kvm_enabled() && s->map_addr)
2232 kvm_log_stop(s->map_addr, s->map_end - s->map_addr);
2233
2234 if (kvm_enabled() && s->lfb_vram_mapped) {
2235 kvm_log_stop(isa_mem_base + 0xa0000, 0x8000);
2236 kvm_log_stop(isa_mem_base + 0xa8000, 0x8000);
2237 }
2238 }
2239
2240 static void vga_map(PCIDevice *pci_dev, int region_num,
2241 uint32_t addr, uint32_t size, int type)
2242 {
2243 PCIVGAState *d = (PCIVGAState *)pci_dev;
2244 VGAState *s = &d->vga_state;
2245 if (region_num == PCI_ROM_SLOT) {
2246 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
2247 } else {
2248 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
2249 }
2250
2251 s->map_addr = addr;
2252 s->map_end = addr + VGA_RAM_SIZE;
2253
2254 vga_dirty_log_start(s);
2255 }
2256
2257 void vga_common_init(VGAState *s, uint8_t *vga_ram_base,
2258 ram_addr_t vga_ram_offset, int vga_ram_size)
2259 {
2260 int i, j, v, b;
2261
2262 for(i = 0;i < 256; i++) {
2263 v = 0;
2264 for(j = 0; j < 8; j++) {
2265 v |= ((i >> j) & 1) << (j * 4);
2266 }
2267 expand4[i] = v;
2268
2269 v = 0;
2270 for(j = 0; j < 4; j++) {
2271 v |= ((i >> (2 * j)) & 3) << (j * 4);
2272 }
2273 expand2[i] = v;
2274 }
2275 for(i = 0; i < 16; i++) {
2276 v = 0;
2277 for(j = 0; j < 4; j++) {
2278 b = ((i >> j) & 1);
2279 v |= b << (2 * j);
2280 v |= b << (2 * j + 1);
2281 }
2282 expand4to8[i] = v;
2283 }
2284
2285 s->vram_ptr = vga_ram_base;
2286 s->vram_offset = vga_ram_offset;
2287 s->vram_size = vga_ram_size;
2288 s->get_bpp = vga_get_bpp;
2289 s->get_offsets = vga_get_offsets;
2290 s->get_resolution = vga_get_resolution;
2291 s->update = vga_update_display;
2292 s->invalidate = vga_invalidate_display;
2293 s->screen_dump = vga_screen_dump;
2294 s->text_update = vga_update_text;
2295 switch (vga_retrace_method) {
2296 case VGA_RETRACE_DUMB:
2297 s->retrace = vga_dumb_retrace;
2298 s->update_retrace_info = vga_dumb_update_retrace_info;
2299 break;
2300
2301 case VGA_RETRACE_PRECISE:
2302 s->retrace = vga_precise_retrace;
2303 s->update_retrace_info = vga_precise_update_retrace_info;
2304 break;
2305 }
2306 vga_reset(s);
2307 }
2308
2309 /* used by both ISA and PCI */
2310 void vga_init(VGAState *s)
2311 {
2312 int vga_io_memory;
2313
2314 qemu_register_reset(vga_reset, s);
2315 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2316
2317 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2318
2319 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2320 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2321 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2322 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2323
2324 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2325
2326 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2327 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2328 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2329 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2330 s->bank_offset = 0;
2331
2332 #ifdef CONFIG_BOCHS_VBE
2333 #if defined (TARGET_I386)
2334 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2335 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2336
2337 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2338 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2339
2340 /* old Bochs IO ports */
2341 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
2342 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
2343
2344 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
2345 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
2346 #else
2347 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2348 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2349
2350 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2351 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2352 #endif
2353 #endif /* CONFIG_BOCHS_VBE */
2354
2355 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2356 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
2357 vga_io_memory);
2358 qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
2359 }
2360
2361 /* Memory mapped interface */
2362 static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr)
2363 {
2364 VGAState *s = opaque;
2365
2366 return vga_ioport_read(s, addr >> s->it_shift) & 0xff;
2367 }
2368
2369 static void vga_mm_writeb (void *opaque,
2370 target_phys_addr_t addr, uint32_t value)
2371 {
2372 VGAState *s = opaque;
2373
2374 vga_ioport_write(s, addr >> s->it_shift, value & 0xff);
2375 }
2376
2377 static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr)
2378 {
2379 VGAState *s = opaque;
2380
2381 return vga_ioport_read(s, addr >> s->it_shift) & 0xffff;
2382 }
2383
2384 static void vga_mm_writew (void *opaque,
2385 target_phys_addr_t addr, uint32_t value)
2386 {
2387 VGAState *s = opaque;
2388
2389 vga_ioport_write(s, addr >> s->it_shift, value & 0xffff);
2390 }
2391
2392 static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr)
2393 {
2394 VGAState *s = opaque;
2395
2396 return vga_ioport_read(s, addr >> s->it_shift);
2397 }
2398
2399 static void vga_mm_writel (void *opaque,
2400 target_phys_addr_t addr, uint32_t value)
2401 {
2402 VGAState *s = opaque;
2403
2404 vga_ioport_write(s, addr >> s->it_shift, value);
2405 }
2406
2407 static CPUReadMemoryFunc *vga_mm_read_ctrl[] = {
2408 &vga_mm_readb,
2409 &vga_mm_readw,
2410 &vga_mm_readl,
2411 };
2412
2413 static CPUWriteMemoryFunc *vga_mm_write_ctrl[] = {
2414 &vga_mm_writeb,
2415 &vga_mm_writew,
2416 &vga_mm_writel,
2417 };
2418
2419 static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base,
2420 target_phys_addr_t ctrl_base, int it_shift)
2421 {
2422 int s_ioport_ctrl, vga_io_memory;
2423
2424 s->it_shift = it_shift;
2425 s_ioport_ctrl = cpu_register_io_memory(0, vga_mm_read_ctrl, vga_mm_write_ctrl, s);
2426 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2427
2428 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2429
2430 cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl);
2431 s->bank_offset = 0;
2432 cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory);
2433 qemu_register_coalesced_mmio(vram_base + 0x000a0000, 0x20000);
2434 }
2435
2436 int isa_vga_init(uint8_t *vga_ram_base,
2437 unsigned long vga_ram_offset, int vga_ram_size)
2438 {
2439 VGAState *s;
2440
2441 s = qemu_mallocz(sizeof(VGAState));
2442 if (!s)
2443 return -1;
2444
2445 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2446 vga_init(s);
2447
2448 s->ds = graphic_console_init(s->update, s->invalidate,
2449 s->screen_dump, s->text_update, s);
2450
2451 #ifdef CONFIG_BOCHS_VBE
2452 /* XXX: use optimized standard vga accesses */
2453 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2454 vga_ram_size, vga_ram_offset);
2455 #endif
2456 return 0;
2457 }
2458
2459 int isa_vga_mm_init(uint8_t *vga_ram_base,
2460 unsigned long vga_ram_offset, int vga_ram_size,
2461 target_phys_addr_t vram_base, target_phys_addr_t ctrl_base,
2462 int it_shift)
2463 {
2464 VGAState *s;
2465
2466 s = qemu_mallocz(sizeof(VGAState));
2467 if (!s)
2468 return -1;
2469
2470 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2471 vga_mm_init(s, vram_base, ctrl_base, it_shift);
2472
2473 s->ds = graphic_console_init(s->update, s->invalidate,
2474 s->screen_dump, s->text_update, s);
2475
2476 #ifdef CONFIG_BOCHS_VBE
2477 /* XXX: use optimized standard vga accesses */
2478 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2479 vga_ram_size, vga_ram_offset);
2480 #endif
2481 return 0;
2482 }
2483
2484 int pci_vga_init(PCIBus *bus, uint8_t *vga_ram_base,
2485 unsigned long vga_ram_offset, int vga_ram_size,
2486 unsigned long vga_bios_offset, int vga_bios_size)
2487 {
2488 PCIVGAState *d;
2489 VGAState *s;
2490 uint8_t *pci_conf;
2491
2492 d = (PCIVGAState *)pci_register_device(bus, "VGA",
2493 sizeof(PCIVGAState),
2494 -1, NULL, NULL);
2495 if (!d)
2496 return -1;
2497 s = &d->vga_state;
2498
2499 vga_common_init(s, vga_ram_base, vga_ram_offset, vga_ram_size);
2500 vga_init(s);
2501
2502 s->ds = graphic_console_init(s->update, s->invalidate,
2503 s->screen_dump, s->text_update, s);
2504
2505 s->pci_dev = &d->dev;
2506
2507 pci_conf = d->dev.config;
2508 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
2509 pci_conf[0x01] = 0x12;
2510 pci_conf[0x02] = 0x11;
2511 pci_conf[0x03] = 0x11;
2512 pci_conf[0x0a] = 0x00; // VGA controller
2513 pci_conf[0x0b] = 0x03;
2514 pci_conf[0x0e] = 0x00; // header_type
2515
2516 /* XXX: vga_ram_size must be a power of two */
2517 pci_register_io_region(&d->dev, 0, vga_ram_size,
2518 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2519 if (vga_bios_size != 0) {
2520 unsigned int bios_total_size;
2521 s->bios_offset = vga_bios_offset;
2522 s->bios_size = vga_bios_size;
2523 /* must be a power of two */
2524 bios_total_size = 1;
2525 while (bios_total_size < vga_bios_size)
2526 bios_total_size <<= 1;
2527 pci_register_io_region(&d->dev, PCI_ROM_SLOT, bios_total_size,
2528 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2529 }
2530 return 0;
2531 }
2532
2533 /********************************************************/
2534 /* vga screen dump */
2535
2536 static void vga_save_dpy_update(DisplayState *s,
2537 int x, int y, int w, int h)
2538 {
2539 }
2540
2541 static void vga_save_dpy_resize(DisplayState *s)
2542 {
2543 }
2544
2545 static void vga_save_dpy_refresh(DisplayState *s)
2546 {
2547 }
2548
2549 int ppm_save(const char *filename, struct DisplaySurface *ds)
2550 {
2551 FILE *f;
2552 uint8_t *d, *d1;
2553 uint32_t v;
2554 int y, x;
2555 uint8_t r, g, b;
2556
2557 f = fopen(filename, "wb");
2558 if (!f)
2559 return -1;
2560 fprintf(f, "P6\n%d %d\n%d\n",
2561 ds->width, ds->height, 255);
2562 d1 = ds->data;
2563 for(y = 0; y < ds->height; y++) {
2564 d = d1;
2565 for(x = 0; x < ds->width; x++) {
2566 if (ds->pf.bits_per_pixel == 32)
2567 v = *(uint32_t *)d;
2568 else
2569 v = (uint32_t) (*(uint16_t *)d);
2570 r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 /
2571 (ds->pf.rmax + 1);
2572 g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 /
2573 (ds->pf.gmax + 1);
2574 b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 /
2575 (ds->pf.bmax + 1);
2576 fputc(r, f);
2577 fputc(g, f);
2578 fputc(b, f);
2579 d += ds->pf.bytes_per_pixel;
2580 }
2581 d1 += ds->linesize;
2582 }
2583 fclose(f);
2584 return 0;
2585 }
2586
2587 static void vga_screen_dump_blank(VGAState *s, const char *filename)
2588 {
2589 FILE *f;
2590 unsigned int y, x, w, h;
2591
2592 w = s->last_scr_width * sizeof(uint32_t);
2593 h = s->last_scr_height;
2594
2595 f = fopen(filename, "wb");
2596 if (!f)
2597 return;
2598 fprintf(f, "P6\n%d %d\n%d\n", w, h, 255);
2599 for (y = 0; y < h; y++) {
2600 for (x = 0; x < w; x++) {
2601 fputc(0, f);
2602 }
2603 }
2604 fclose(f);
2605 }
2606
2607 static void vga_screen_dump_common(VGAState *s, const char *filename,
2608 int w, int h)
2609 {
2610 DisplayState *saved_ds, ds1, *ds = &ds1;
2611 DisplayChangeListener dcl;
2612
2613 /* XXX: this is a little hackish */
2614 vga_invalidate_display(s);
2615 saved_ds = s->ds;
2616
2617 memset(ds, 0, sizeof(DisplayState));
2618 memset(&dcl, 0, sizeof(DisplayChangeListener));
2619 dcl.dpy_update = vga_save_dpy_update;
2620 dcl.dpy_resize = vga_save_dpy_resize;
2621 dcl.dpy_refresh = vga_save_dpy_refresh;
2622 register_displaychangelistener(ds, &dcl);
2623 ds->surface = qemu_create_displaysurface(w, h, 32, 4 * w);
2624
2625 s->ds = ds;
2626 s->graphic_mode = -1;
2627 vga_update_display(s);
2628
2629 ppm_save(filename, ds->surface);
2630
2631 qemu_free_displaysurface(ds->surface);
2632 s->ds = saved_ds;
2633 }
2634
2635 static void vga_screen_dump_graphic(VGAState *s, const char *filename)
2636 {
2637 int w, h;
2638
2639 s->get_resolution(s, &w, &h);
2640 vga_screen_dump_common(s, filename, w, h);
2641 }
2642
2643 static void vga_screen_dump_text(VGAState *s, const char *filename)
2644 {
2645 int w, h, cwidth, cheight;
2646
2647 vga_get_text_resolution(s, &w, &h, &cwidth, &cheight);
2648 vga_screen_dump_common(s, filename, w * cwidth, h * cheight);
2649 }
2650
2651 /* save the vga display in a PPM image even if no display is
2652 available */
2653 static void vga_screen_dump(void *opaque, const char *filename)
2654 {
2655 VGAState *s = (VGAState *)opaque;
2656
2657 if (!(s->ar_index & 0x20))
2658 vga_screen_dump_blank(s, filename);
2659 else if (s->gr[6] & 1)
2660 vga_screen_dump_graphic(s, filename);
2661 else
2662 vga_screen_dump_text(s, filename);
2663 }