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VMware SVGA II emulation, by Andrzej Zaborowski.
[qemu.git] / hw / vga.c
... / ...
CommitLineData
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 "vl.h"
25#include "vga_int.h"
26
27//#define DEBUG_VGA
28//#define DEBUG_VGA_MEM
29//#define DEBUG_VGA_REG
30
31//#define DEBUG_BOCHS_VBE
32
33/* force some bits to zero */
34const uint8_t sr_mask[8] = {
35 (uint8_t)~0xfc,
36 (uint8_t)~0xc2,
37 (uint8_t)~0xf0,
38 (uint8_t)~0xc0,
39 (uint8_t)~0xf1,
40 (uint8_t)~0xff,
41 (uint8_t)~0xff,
42 (uint8_t)~0x00,
43};
44
45const uint8_t gr_mask[16] = {
46 (uint8_t)~0xf0, /* 0x00 */
47 (uint8_t)~0xf0, /* 0x01 */
48 (uint8_t)~0xf0, /* 0x02 */
49 (uint8_t)~0xe0, /* 0x03 */
50 (uint8_t)~0xfc, /* 0x04 */
51 (uint8_t)~0x84, /* 0x05 */
52 (uint8_t)~0xf0, /* 0x06 */
53 (uint8_t)~0xf0, /* 0x07 */
54 (uint8_t)~0x00, /* 0x08 */
55 (uint8_t)~0xff, /* 0x09 */
56 (uint8_t)~0xff, /* 0x0a */
57 (uint8_t)~0xff, /* 0x0b */
58 (uint8_t)~0xff, /* 0x0c */
59 (uint8_t)~0xff, /* 0x0d */
60 (uint8_t)~0xff, /* 0x0e */
61 (uint8_t)~0xff, /* 0x0f */
62};
63
64#define cbswap_32(__x) \
65((uint32_t)( \
66 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
67 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
68 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
69 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
70
71#ifdef WORDS_BIGENDIAN
72#define PAT(x) cbswap_32(x)
73#else
74#define PAT(x) (x)
75#endif
76
77#ifdef WORDS_BIGENDIAN
78#define BIG 1
79#else
80#define BIG 0
81#endif
82
83#ifdef WORDS_BIGENDIAN
84#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
85#else
86#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
87#endif
88
89static const uint32_t mask16[16] = {
90 PAT(0x00000000),
91 PAT(0x000000ff),
92 PAT(0x0000ff00),
93 PAT(0x0000ffff),
94 PAT(0x00ff0000),
95 PAT(0x00ff00ff),
96 PAT(0x00ffff00),
97 PAT(0x00ffffff),
98 PAT(0xff000000),
99 PAT(0xff0000ff),
100 PAT(0xff00ff00),
101 PAT(0xff00ffff),
102 PAT(0xffff0000),
103 PAT(0xffff00ff),
104 PAT(0xffffff00),
105 PAT(0xffffffff),
106};
107
108#undef PAT
109
110#ifdef WORDS_BIGENDIAN
111#define PAT(x) (x)
112#else
113#define PAT(x) cbswap_32(x)
114#endif
115
116static const uint32_t dmask16[16] = {
117 PAT(0x00000000),
118 PAT(0x000000ff),
119 PAT(0x0000ff00),
120 PAT(0x0000ffff),
121 PAT(0x00ff0000),
122 PAT(0x00ff00ff),
123 PAT(0x00ffff00),
124 PAT(0x00ffffff),
125 PAT(0xff000000),
126 PAT(0xff0000ff),
127 PAT(0xff00ff00),
128 PAT(0xff00ffff),
129 PAT(0xffff0000),
130 PAT(0xffff00ff),
131 PAT(0xffffff00),
132 PAT(0xffffffff),
133};
134
135static const uint32_t dmask4[4] = {
136 PAT(0x00000000),
137 PAT(0x0000ffff),
138 PAT(0xffff0000),
139 PAT(0xffffffff),
140};
141
142static uint32_t expand4[256];
143static uint16_t expand2[256];
144static uint8_t expand4to8[16];
145
146static void vga_screen_dump(void *opaque, const char *filename);
147
148static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
149{
150 VGAState *s = opaque;
151 int val, index;
152
153 /* check port range access depending on color/monochrome mode */
154 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
155 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
156 val = 0xff;
157 } else {
158 switch(addr) {
159 case 0x3c0:
160 if (s->ar_flip_flop == 0) {
161 val = s->ar_index;
162 } else {
163 val = 0;
164 }
165 break;
166 case 0x3c1:
167 index = s->ar_index & 0x1f;
168 if (index < 21)
169 val = s->ar[index];
170 else
171 val = 0;
172 break;
173 case 0x3c2:
174 val = s->st00;
175 break;
176 case 0x3c4:
177 val = s->sr_index;
178 break;
179 case 0x3c5:
180 val = s->sr[s->sr_index];
181#ifdef DEBUG_VGA_REG
182 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
183#endif
184 break;
185 case 0x3c7:
186 val = s->dac_state;
187 break;
188 case 0x3c8:
189 val = s->dac_write_index;
190 break;
191 case 0x3c9:
192 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
193 if (++s->dac_sub_index == 3) {
194 s->dac_sub_index = 0;
195 s->dac_read_index++;
196 }
197 break;
198 case 0x3ca:
199 val = s->fcr;
200 break;
201 case 0x3cc:
202 val = s->msr;
203 break;
204 case 0x3ce:
205 val = s->gr_index;
206 break;
207 case 0x3cf:
208 val = s->gr[s->gr_index];
209#ifdef DEBUG_VGA_REG
210 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
211#endif
212 break;
213 case 0x3b4:
214 case 0x3d4:
215 val = s->cr_index;
216 break;
217 case 0x3b5:
218 case 0x3d5:
219 val = s->cr[s->cr_index];
220#ifdef DEBUG_VGA_REG
221 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
222#endif
223 break;
224 case 0x3ba:
225 case 0x3da:
226 /* just toggle to fool polling */
227 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
228 val = s->st01;
229 s->ar_flip_flop = 0;
230 break;
231 default:
232 val = 0x00;
233 break;
234 }
235 }
236#if defined(DEBUG_VGA)
237 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
238#endif
239 return val;
240}
241
242static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
243{
244 VGAState *s = opaque;
245 int index;
246
247 /* check port range access depending on color/monochrome mode */
248 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
249 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
250 return;
251
252#ifdef DEBUG_VGA
253 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
254#endif
255
256 switch(addr) {
257 case 0x3c0:
258 if (s->ar_flip_flop == 0) {
259 val &= 0x3f;
260 s->ar_index = val;
261 } else {
262 index = s->ar_index & 0x1f;
263 switch(index) {
264 case 0x00 ... 0x0f:
265 s->ar[index] = val & 0x3f;
266 break;
267 case 0x10:
268 s->ar[index] = val & ~0x10;
269 break;
270 case 0x11:
271 s->ar[index] = val;
272 break;
273 case 0x12:
274 s->ar[index] = val & ~0xc0;
275 break;
276 case 0x13:
277 s->ar[index] = val & ~0xf0;
278 break;
279 case 0x14:
280 s->ar[index] = val & ~0xf0;
281 break;
282 default:
283 break;
284 }
285 }
286 s->ar_flip_flop ^= 1;
287 break;
288 case 0x3c2:
289 s->msr = val & ~0x10;
290 break;
291 case 0x3c4:
292 s->sr_index = val & 7;
293 break;
294 case 0x3c5:
295#ifdef DEBUG_VGA_REG
296 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
297#endif
298 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
299 break;
300 case 0x3c7:
301 s->dac_read_index = val;
302 s->dac_sub_index = 0;
303 s->dac_state = 3;
304 break;
305 case 0x3c8:
306 s->dac_write_index = val;
307 s->dac_sub_index = 0;
308 s->dac_state = 0;
309 break;
310 case 0x3c9:
311 s->dac_cache[s->dac_sub_index] = val;
312 if (++s->dac_sub_index == 3) {
313 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
314 s->dac_sub_index = 0;
315 s->dac_write_index++;
316 }
317 break;
318 case 0x3ce:
319 s->gr_index = val & 0x0f;
320 break;
321 case 0x3cf:
322#ifdef DEBUG_VGA_REG
323 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
324#endif
325 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
326 break;
327 case 0x3b4:
328 case 0x3d4:
329 s->cr_index = val;
330 break;
331 case 0x3b5:
332 case 0x3d5:
333#ifdef DEBUG_VGA_REG
334 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
335#endif
336 /* handle CR0-7 protection */
337 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
338 /* can always write bit 4 of CR7 */
339 if (s->cr_index == 7)
340 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
341 return;
342 }
343 switch(s->cr_index) {
344 case 0x01: /* horizontal display end */
345 case 0x07:
346 case 0x09:
347 case 0x0c:
348 case 0x0d:
349 case 0x12: /* veritcal display end */
350 s->cr[s->cr_index] = val;
351 break;
352 default:
353 s->cr[s->cr_index] = val;
354 break;
355 }
356 break;
357 case 0x3ba:
358 case 0x3da:
359 s->fcr = val & 0x10;
360 break;
361 }
362}
363
364#ifdef CONFIG_BOCHS_VBE
365static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
366{
367 VGAState *s = opaque;
368 uint32_t val;
369 val = s->vbe_index;
370 return val;
371}
372
373static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
374{
375 VGAState *s = opaque;
376 uint32_t val;
377
378 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
379 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
380 switch(s->vbe_index) {
381 /* XXX: do not hardcode ? */
382 case VBE_DISPI_INDEX_XRES:
383 val = VBE_DISPI_MAX_XRES;
384 break;
385 case VBE_DISPI_INDEX_YRES:
386 val = VBE_DISPI_MAX_YRES;
387 break;
388 case VBE_DISPI_INDEX_BPP:
389 val = VBE_DISPI_MAX_BPP;
390 break;
391 default:
392 val = s->vbe_regs[s->vbe_index];
393 break;
394 }
395 } else {
396 val = s->vbe_regs[s->vbe_index];
397 }
398 } else {
399 val = 0;
400 }
401#ifdef DEBUG_BOCHS_VBE
402 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
403#endif
404 return val;
405}
406
407static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
408{
409 VGAState *s = opaque;
410 s->vbe_index = val;
411}
412
413static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
414{
415 VGAState *s = opaque;
416
417 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
418#ifdef DEBUG_BOCHS_VBE
419 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
420#endif
421 switch(s->vbe_index) {
422 case VBE_DISPI_INDEX_ID:
423 if (val == VBE_DISPI_ID0 ||
424 val == VBE_DISPI_ID1 ||
425 val == VBE_DISPI_ID2 ||
426 val == VBE_DISPI_ID3 ||
427 val == VBE_DISPI_ID4) {
428 s->vbe_regs[s->vbe_index] = val;
429 }
430 break;
431 case VBE_DISPI_INDEX_XRES:
432 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
433 s->vbe_regs[s->vbe_index] = val;
434 }
435 break;
436 case VBE_DISPI_INDEX_YRES:
437 if (val <= VBE_DISPI_MAX_YRES) {
438 s->vbe_regs[s->vbe_index] = val;
439 }
440 break;
441 case VBE_DISPI_INDEX_BPP:
442 if (val == 0)
443 val = 8;
444 if (val == 4 || val == 8 || val == 15 ||
445 val == 16 || val == 24 || val == 32) {
446 s->vbe_regs[s->vbe_index] = val;
447 }
448 break;
449 case VBE_DISPI_INDEX_BANK:
450 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
451 val &= (s->vbe_bank_mask >> 2);
452 } else {
453 val &= s->vbe_bank_mask;
454 }
455 s->vbe_regs[s->vbe_index] = val;
456 s->bank_offset = (val << 16);
457 break;
458 case VBE_DISPI_INDEX_ENABLE:
459 if ((val & VBE_DISPI_ENABLED) &&
460 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
461 int h, shift_control;
462
463 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
464 s->vbe_regs[VBE_DISPI_INDEX_XRES];
465 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
466 s->vbe_regs[VBE_DISPI_INDEX_YRES];
467 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
468 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
469
470 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
471 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
472 else
473 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
474 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
475 s->vbe_start_addr = 0;
476
477 /* clear the screen (should be done in BIOS) */
478 if (!(val & VBE_DISPI_NOCLEARMEM)) {
479 memset(s->vram_ptr, 0,
480 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
481 }
482
483 /* we initialize the VGA graphic mode (should be done
484 in BIOS) */
485 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
486 s->cr[0x17] |= 3; /* no CGA modes */
487 s->cr[0x13] = s->vbe_line_offset >> 3;
488 /* width */
489 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
490 /* height (only meaningful if < 1024) */
491 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
492 s->cr[0x12] = h;
493 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
494 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
495 /* line compare to 1023 */
496 s->cr[0x18] = 0xff;
497 s->cr[0x07] |= 0x10;
498 s->cr[0x09] |= 0x40;
499
500 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
501 shift_control = 0;
502 s->sr[0x01] &= ~8; /* no double line */
503 } else {
504 shift_control = 2;
505 s->sr[4] |= 0x08; /* set chain 4 mode */
506 s->sr[2] |= 0x0f; /* activate all planes */
507 }
508 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
509 s->cr[0x09] &= ~0x9f; /* no double scan */
510 } else {
511 /* XXX: the bios should do that */
512 s->bank_offset = 0;
513 }
514 s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
515 s->vbe_regs[s->vbe_index] = val;
516 break;
517 case VBE_DISPI_INDEX_VIRT_WIDTH:
518 {
519 int w, h, line_offset;
520
521 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
522 return;
523 w = val;
524 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
525 line_offset = w >> 1;
526 else
527 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
528 h = s->vram_size / line_offset;
529 /* XXX: support weird bochs semantics ? */
530 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
531 return;
532 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
533 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
534 s->vbe_line_offset = line_offset;
535 }
536 break;
537 case VBE_DISPI_INDEX_X_OFFSET:
538 case VBE_DISPI_INDEX_Y_OFFSET:
539 {
540 int x;
541 s->vbe_regs[s->vbe_index] = val;
542 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
543 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
544 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
545 s->vbe_start_addr += x >> 1;
546 else
547 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
548 s->vbe_start_addr >>= 2;
549 }
550 break;
551 default:
552 break;
553 }
554 }
555}
556#endif
557
558/* called for accesses between 0xa0000 and 0xc0000 */
559uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
560{
561 VGAState *s = opaque;
562 int memory_map_mode, plane;
563 uint32_t ret;
564
565 /* convert to VGA memory offset */
566 memory_map_mode = (s->gr[6] >> 2) & 3;
567 addr &= 0x1ffff;
568 switch(memory_map_mode) {
569 case 0:
570 break;
571 case 1:
572 if (addr >= 0x10000)
573 return 0xff;
574 addr += s->bank_offset;
575 break;
576 case 2:
577 addr -= 0x10000;
578 if (addr >= 0x8000)
579 return 0xff;
580 break;
581 default:
582 case 3:
583 addr -= 0x18000;
584 if (addr >= 0x8000)
585 return 0xff;
586 break;
587 }
588
589 if (s->sr[4] & 0x08) {
590 /* chain 4 mode : simplest access */
591 ret = s->vram_ptr[addr];
592 } else if (s->gr[5] & 0x10) {
593 /* odd/even mode (aka text mode mapping) */
594 plane = (s->gr[4] & 2) | (addr & 1);
595 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
596 } else {
597 /* standard VGA latched access */
598 s->latch = ((uint32_t *)s->vram_ptr)[addr];
599
600 if (!(s->gr[5] & 0x08)) {
601 /* read mode 0 */
602 plane = s->gr[4];
603 ret = GET_PLANE(s->latch, plane);
604 } else {
605 /* read mode 1 */
606 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
607 ret |= ret >> 16;
608 ret |= ret >> 8;
609 ret = (~ret) & 0xff;
610 }
611 }
612 return ret;
613}
614
615static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
616{
617 uint32_t v;
618#ifdef TARGET_WORDS_BIGENDIAN
619 v = vga_mem_readb(opaque, addr) << 8;
620 v |= vga_mem_readb(opaque, addr + 1);
621#else
622 v = vga_mem_readb(opaque, addr);
623 v |= vga_mem_readb(opaque, addr + 1) << 8;
624#endif
625 return v;
626}
627
628static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
629{
630 uint32_t v;
631#ifdef TARGET_WORDS_BIGENDIAN
632 v = vga_mem_readb(opaque, addr) << 24;
633 v |= vga_mem_readb(opaque, addr + 1) << 16;
634 v |= vga_mem_readb(opaque, addr + 2) << 8;
635 v |= vga_mem_readb(opaque, addr + 3);
636#else
637 v = vga_mem_readb(opaque, addr);
638 v |= vga_mem_readb(opaque, addr + 1) << 8;
639 v |= vga_mem_readb(opaque, addr + 2) << 16;
640 v |= vga_mem_readb(opaque, addr + 3) << 24;
641#endif
642 return v;
643}
644
645/* called for accesses between 0xa0000 and 0xc0000 */
646void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
647{
648 VGAState *s = opaque;
649 int memory_map_mode, plane, write_mode, b, func_select, mask;
650 uint32_t write_mask, bit_mask, set_mask;
651
652#ifdef DEBUG_VGA_MEM
653 printf("vga: [0x%x] = 0x%02x\n", addr, val);
654#endif
655 /* convert to VGA memory offset */
656 memory_map_mode = (s->gr[6] >> 2) & 3;
657 addr &= 0x1ffff;
658 switch(memory_map_mode) {
659 case 0:
660 break;
661 case 1:
662 if (addr >= 0x10000)
663 return;
664 addr += s->bank_offset;
665 break;
666 case 2:
667 addr -= 0x10000;
668 if (addr >= 0x8000)
669 return;
670 break;
671 default:
672 case 3:
673 addr -= 0x18000;
674 if (addr >= 0x8000)
675 return;
676 break;
677 }
678
679 if (s->sr[4] & 0x08) {
680 /* chain 4 mode : simplest access */
681 plane = addr & 3;
682 mask = (1 << plane);
683 if (s->sr[2] & mask) {
684 s->vram_ptr[addr] = val;
685#ifdef DEBUG_VGA_MEM
686 printf("vga: chain4: [0x%x]\n", addr);
687#endif
688 s->plane_updated |= mask; /* only used to detect font change */
689 cpu_physical_memory_set_dirty(s->vram_offset + addr);
690 }
691 } else if (s->gr[5] & 0x10) {
692 /* odd/even mode (aka text mode mapping) */
693 plane = (s->gr[4] & 2) | (addr & 1);
694 mask = (1 << plane);
695 if (s->sr[2] & mask) {
696 addr = ((addr & ~1) << 1) | plane;
697 s->vram_ptr[addr] = val;
698#ifdef DEBUG_VGA_MEM
699 printf("vga: odd/even: [0x%x]\n", addr);
700#endif
701 s->plane_updated |= mask; /* only used to detect font change */
702 cpu_physical_memory_set_dirty(s->vram_offset + addr);
703 }
704 } else {
705 /* standard VGA latched access */
706 write_mode = s->gr[5] & 3;
707 switch(write_mode) {
708 default:
709 case 0:
710 /* rotate */
711 b = s->gr[3] & 7;
712 val = ((val >> b) | (val << (8 - b))) & 0xff;
713 val |= val << 8;
714 val |= val << 16;
715
716 /* apply set/reset mask */
717 set_mask = mask16[s->gr[1]];
718 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
719 bit_mask = s->gr[8];
720 break;
721 case 1:
722 val = s->latch;
723 goto do_write;
724 case 2:
725 val = mask16[val & 0x0f];
726 bit_mask = s->gr[8];
727 break;
728 case 3:
729 /* rotate */
730 b = s->gr[3] & 7;
731 val = (val >> b) | (val << (8 - b));
732
733 bit_mask = s->gr[8] & val;
734 val = mask16[s->gr[0]];
735 break;
736 }
737
738 /* apply logical operation */
739 func_select = s->gr[3] >> 3;
740 switch(func_select) {
741 case 0:
742 default:
743 /* nothing to do */
744 break;
745 case 1:
746 /* and */
747 val &= s->latch;
748 break;
749 case 2:
750 /* or */
751 val |= s->latch;
752 break;
753 case 3:
754 /* xor */
755 val ^= s->latch;
756 break;
757 }
758
759 /* apply bit mask */
760 bit_mask |= bit_mask << 8;
761 bit_mask |= bit_mask << 16;
762 val = (val & bit_mask) | (s->latch & ~bit_mask);
763
764 do_write:
765 /* mask data according to sr[2] */
766 mask = s->sr[2];
767 s->plane_updated |= mask; /* only used to detect font change */
768 write_mask = mask16[mask];
769 ((uint32_t *)s->vram_ptr)[addr] =
770 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
771 (val & write_mask);
772#ifdef DEBUG_VGA_MEM
773 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
774 addr * 4, write_mask, val);
775#endif
776 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
777 }
778}
779
780static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
781{
782#ifdef TARGET_WORDS_BIGENDIAN
783 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
784 vga_mem_writeb(opaque, addr + 1, val & 0xff);
785#else
786 vga_mem_writeb(opaque, addr, val & 0xff);
787 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
788#endif
789}
790
791static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
792{
793#ifdef TARGET_WORDS_BIGENDIAN
794 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
795 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
796 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
797 vga_mem_writeb(opaque, addr + 3, val & 0xff);
798#else
799 vga_mem_writeb(opaque, addr, val & 0xff);
800 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
801 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
802 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
803#endif
804}
805
806typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
807 const uint8_t *font_ptr, int h,
808 uint32_t fgcol, uint32_t bgcol);
809typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
810 const uint8_t *font_ptr, int h,
811 uint32_t fgcol, uint32_t bgcol, int dup9);
812typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
813 const uint8_t *s, int width);
814
815static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
816{
817 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
818}
819
820static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
821{
822 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
823}
824
825static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
826{
827 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
828}
829
830static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
831{
832 return (r << 16) | (g << 8) | b;
833}
834
835static inline unsigned int rgb_to_pixel32bgr(unsigned int r, unsigned int g, unsigned b)
836{
837 return (b << 16) | (g << 8) | r;
838}
839
840#define DEPTH 8
841#include "vga_template.h"
842
843#define DEPTH 15
844#include "vga_template.h"
845
846#define DEPTH 16
847#include "vga_template.h"
848
849#define DEPTH 32
850#include "vga_template.h"
851
852#define BGR_FORMAT
853#define DEPTH 32
854#include "vga_template.h"
855
856static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
857{
858 unsigned int col;
859 col = rgb_to_pixel8(r, g, b);
860 col |= col << 8;
861 col |= col << 16;
862 return col;
863}
864
865static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
866{
867 unsigned int col;
868 col = rgb_to_pixel15(r, g, b);
869 col |= col << 16;
870 return col;
871}
872
873static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
874{
875 unsigned int col;
876 col = rgb_to_pixel16(r, g, b);
877 col |= col << 16;
878 return col;
879}
880
881static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
882{
883 unsigned int col;
884 col = rgb_to_pixel32(r, g, b);
885 return col;
886}
887
888static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
889{
890 unsigned int col;
891 col = rgb_to_pixel32bgr(r, g, b);
892 return col;
893}
894
895/* return true if the palette was modified */
896static int update_palette16(VGAState *s)
897{
898 int full_update, i;
899 uint32_t v, col, *palette;
900
901 full_update = 0;
902 palette = s->last_palette;
903 for(i = 0; i < 16; i++) {
904 v = s->ar[i];
905 if (s->ar[0x10] & 0x80)
906 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
907 else
908 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
909 v = v * 3;
910 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
911 c6_to_8(s->palette[v + 1]),
912 c6_to_8(s->palette[v + 2]));
913 if (col != palette[i]) {
914 full_update = 1;
915 palette[i] = col;
916 }
917 }
918 return full_update;
919}
920
921/* return true if the palette was modified */
922static int update_palette256(VGAState *s)
923{
924 int full_update, i;
925 uint32_t v, col, *palette;
926
927 full_update = 0;
928 palette = s->last_palette;
929 v = 0;
930 for(i = 0; i < 256; i++) {
931 if (s->dac_8bit) {
932 col = s->rgb_to_pixel(s->palette[v],
933 s->palette[v + 1],
934 s->palette[v + 2]);
935 } else {
936 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
937 c6_to_8(s->palette[v + 1]),
938 c6_to_8(s->palette[v + 2]));
939 }
940 if (col != palette[i]) {
941 full_update = 1;
942 palette[i] = col;
943 }
944 v += 3;
945 }
946 return full_update;
947}
948
949static void vga_get_offsets(VGAState *s,
950 uint32_t *pline_offset,
951 uint32_t *pstart_addr,
952 uint32_t *pline_compare)
953{
954 uint32_t start_addr, line_offset, line_compare;
955#ifdef CONFIG_BOCHS_VBE
956 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
957 line_offset = s->vbe_line_offset;
958 start_addr = s->vbe_start_addr;
959 line_compare = 65535;
960 } else
961#endif
962 {
963 /* compute line_offset in bytes */
964 line_offset = s->cr[0x13];
965 line_offset <<= 3;
966
967 /* starting address */
968 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
969
970 /* line compare */
971 line_compare = s->cr[0x18] |
972 ((s->cr[0x07] & 0x10) << 4) |
973 ((s->cr[0x09] & 0x40) << 3);
974 }
975 *pline_offset = line_offset;
976 *pstart_addr = start_addr;
977 *pline_compare = line_compare;
978}
979
980/* update start_addr and line_offset. Return TRUE if modified */
981static int update_basic_params(VGAState *s)
982{
983 int full_update;
984 uint32_t start_addr, line_offset, line_compare;
985
986 full_update = 0;
987
988 s->get_offsets(s, &line_offset, &start_addr, &line_compare);
989
990 if (line_offset != s->line_offset ||
991 start_addr != s->start_addr ||
992 line_compare != s->line_compare) {
993 s->line_offset = line_offset;
994 s->start_addr = start_addr;
995 s->line_compare = line_compare;
996 full_update = 1;
997 }
998 return full_update;
999}
1000
1001#define NB_DEPTHS 5
1002
1003static inline int get_depth_index(DisplayState *s)
1004{
1005 switch(s->depth) {
1006 default:
1007 case 8:
1008 return 0;
1009 case 15:
1010 return 1;
1011 case 16:
1012 return 2;
1013 case 32:
1014 if (s->bgr)
1015 return 4;
1016 else
1017 return 3;
1018 }
1019}
1020
1021static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1022 vga_draw_glyph8_8,
1023 vga_draw_glyph8_16,
1024 vga_draw_glyph8_16,
1025 vga_draw_glyph8_32,
1026 vga_draw_glyph8_32,
1027};
1028
1029static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1030 vga_draw_glyph16_8,
1031 vga_draw_glyph16_16,
1032 vga_draw_glyph16_16,
1033 vga_draw_glyph16_32,
1034 vga_draw_glyph16_32,
1035};
1036
1037static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
1038 vga_draw_glyph9_8,
1039 vga_draw_glyph9_16,
1040 vga_draw_glyph9_16,
1041 vga_draw_glyph9_32,
1042 vga_draw_glyph9_32,
1043};
1044
1045static const uint8_t cursor_glyph[32 * 4] = {
1046 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1047 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1048 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1049 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1050 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1051 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1052 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1053 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1054 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1055 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1056 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1057 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1058 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1059 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1060 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1061 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1062};
1063
1064/*
1065 * Text mode update
1066 * Missing:
1067 * - double scan
1068 * - double width
1069 * - underline
1070 * - flashing
1071 */
1072static void vga_draw_text(VGAState *s, int full_update)
1073{
1074 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1075 int cx_min, cx_max, linesize, x_incr;
1076 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1077 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1078 const uint8_t *font_ptr, *font_base[2];
1079 int dup9, line_offset, depth_index;
1080 uint32_t *palette;
1081 uint32_t *ch_attr_ptr;
1082 vga_draw_glyph8_func *vga_draw_glyph8;
1083 vga_draw_glyph9_func *vga_draw_glyph9;
1084
1085 full_update |= update_palette16(s);
1086 palette = s->last_palette;
1087
1088 /* compute font data address (in plane 2) */
1089 v = s->sr[3];
1090 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1091 if (offset != s->font_offsets[0]) {
1092 s->font_offsets[0] = offset;
1093 full_update = 1;
1094 }
1095 font_base[0] = s->vram_ptr + offset;
1096
1097 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1098 font_base[1] = s->vram_ptr + offset;
1099 if (offset != s->font_offsets[1]) {
1100 s->font_offsets[1] = offset;
1101 full_update = 1;
1102 }
1103 if (s->plane_updated & (1 << 2)) {
1104 /* if the plane 2 was modified since the last display, it
1105 indicates the font may have been modified */
1106 s->plane_updated = 0;
1107 full_update = 1;
1108 }
1109 full_update |= update_basic_params(s);
1110
1111 line_offset = s->line_offset;
1112 s1 = s->vram_ptr + (s->start_addr * 4);
1113
1114 /* total width & height */
1115 cheight = (s->cr[9] & 0x1f) + 1;
1116 cw = 8;
1117 if (!(s->sr[1] & 0x01))
1118 cw = 9;
1119 if (s->sr[1] & 0x08)
1120 cw = 16; /* NOTE: no 18 pixel wide */
1121 x_incr = cw * ((s->ds->depth + 7) >> 3);
1122 width = (s->cr[0x01] + 1);
1123 if (s->cr[0x06] == 100) {
1124 /* ugly hack for CGA 160x100x16 - explain me the logic */
1125 height = 100;
1126 } else {
1127 height = s->cr[0x12] |
1128 ((s->cr[0x07] & 0x02) << 7) |
1129 ((s->cr[0x07] & 0x40) << 3);
1130 height = (height + 1) / cheight;
1131 }
1132 if ((height * width) > CH_ATTR_SIZE) {
1133 /* better than nothing: exit if transient size is too big */
1134 return;
1135 }
1136
1137 if (width != s->last_width || height != s->last_height ||
1138 cw != s->last_cw || cheight != s->last_ch) {
1139 s->last_scr_width = width * cw;
1140 s->last_scr_height = height * cheight;
1141 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
1142 s->last_width = width;
1143 s->last_height = height;
1144 s->last_ch = cheight;
1145 s->last_cw = cw;
1146 full_update = 1;
1147 }
1148 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1149 if (cursor_offset != s->cursor_offset ||
1150 s->cr[0xa] != s->cursor_start ||
1151 s->cr[0xb] != s->cursor_end) {
1152 /* if the cursor position changed, we update the old and new
1153 chars */
1154 if (s->cursor_offset < CH_ATTR_SIZE)
1155 s->last_ch_attr[s->cursor_offset] = -1;
1156 if (cursor_offset < CH_ATTR_SIZE)
1157 s->last_ch_attr[cursor_offset] = -1;
1158 s->cursor_offset = cursor_offset;
1159 s->cursor_start = s->cr[0xa];
1160 s->cursor_end = s->cr[0xb];
1161 }
1162 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1163
1164 depth_index = get_depth_index(s->ds);
1165 if (cw == 16)
1166 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1167 else
1168 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1169 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1170
1171 dest = s->ds->data;
1172 linesize = s->ds->linesize;
1173 ch_attr_ptr = s->last_ch_attr;
1174 for(cy = 0; cy < height; cy++) {
1175 d1 = dest;
1176 src = s1;
1177 cx_min = width;
1178 cx_max = -1;
1179 for(cx = 0; cx < width; cx++) {
1180 ch_attr = *(uint16_t *)src;
1181 if (full_update || ch_attr != *ch_attr_ptr) {
1182 if (cx < cx_min)
1183 cx_min = cx;
1184 if (cx > cx_max)
1185 cx_max = cx;
1186 *ch_attr_ptr = ch_attr;
1187#ifdef WORDS_BIGENDIAN
1188 ch = ch_attr >> 8;
1189 cattr = ch_attr & 0xff;
1190#else
1191 ch = ch_attr & 0xff;
1192 cattr = ch_attr >> 8;
1193#endif
1194 font_ptr = font_base[(cattr >> 3) & 1];
1195 font_ptr += 32 * 4 * ch;
1196 bgcol = palette[cattr >> 4];
1197 fgcol = palette[cattr & 0x0f];
1198 if (cw != 9) {
1199 vga_draw_glyph8(d1, linesize,
1200 font_ptr, cheight, fgcol, bgcol);
1201 } else {
1202 dup9 = 0;
1203 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1204 dup9 = 1;
1205 vga_draw_glyph9(d1, linesize,
1206 font_ptr, cheight, fgcol, bgcol, dup9);
1207 }
1208 if (src == cursor_ptr &&
1209 !(s->cr[0x0a] & 0x20)) {
1210 int line_start, line_last, h;
1211 /* draw the cursor */
1212 line_start = s->cr[0x0a] & 0x1f;
1213 line_last = s->cr[0x0b] & 0x1f;
1214 /* XXX: check that */
1215 if (line_last > cheight - 1)
1216 line_last = cheight - 1;
1217 if (line_last >= line_start && line_start < cheight) {
1218 h = line_last - line_start + 1;
1219 d = d1 + linesize * line_start;
1220 if (cw != 9) {
1221 vga_draw_glyph8(d, linesize,
1222 cursor_glyph, h, fgcol, bgcol);
1223 } else {
1224 vga_draw_glyph9(d, linesize,
1225 cursor_glyph, h, fgcol, bgcol, 1);
1226 }
1227 }
1228 }
1229 }
1230 d1 += x_incr;
1231 src += 4;
1232 ch_attr_ptr++;
1233 }
1234 if (cx_max != -1) {
1235 dpy_update(s->ds, cx_min * cw, cy * cheight,
1236 (cx_max - cx_min + 1) * cw, cheight);
1237 }
1238 dest += linesize * cheight;
1239 s1 += line_offset;
1240 }
1241}
1242
1243enum {
1244 VGA_DRAW_LINE2,
1245 VGA_DRAW_LINE2D2,
1246 VGA_DRAW_LINE4,
1247 VGA_DRAW_LINE4D2,
1248 VGA_DRAW_LINE8D2,
1249 VGA_DRAW_LINE8,
1250 VGA_DRAW_LINE15,
1251 VGA_DRAW_LINE16,
1252 VGA_DRAW_LINE24,
1253 VGA_DRAW_LINE32,
1254 VGA_DRAW_LINE_NB,
1255};
1256
1257static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1258 vga_draw_line2_8,
1259 vga_draw_line2_16,
1260 vga_draw_line2_16,
1261 vga_draw_line2_32,
1262 vga_draw_line2_32,
1263
1264 vga_draw_line2d2_8,
1265 vga_draw_line2d2_16,
1266 vga_draw_line2d2_16,
1267 vga_draw_line2d2_32,
1268 vga_draw_line2d2_32,
1269
1270 vga_draw_line4_8,
1271 vga_draw_line4_16,
1272 vga_draw_line4_16,
1273 vga_draw_line4_32,
1274 vga_draw_line4_32,
1275
1276 vga_draw_line4d2_8,
1277 vga_draw_line4d2_16,
1278 vga_draw_line4d2_16,
1279 vga_draw_line4d2_32,
1280 vga_draw_line4d2_32,
1281
1282 vga_draw_line8d2_8,
1283 vga_draw_line8d2_16,
1284 vga_draw_line8d2_16,
1285 vga_draw_line8d2_32,
1286 vga_draw_line8d2_32,
1287
1288 vga_draw_line8_8,
1289 vga_draw_line8_16,
1290 vga_draw_line8_16,
1291 vga_draw_line8_32,
1292 vga_draw_line8_32,
1293
1294 vga_draw_line15_8,
1295 vga_draw_line15_15,
1296 vga_draw_line15_16,
1297 vga_draw_line15_32,
1298 vga_draw_line15_32bgr,
1299
1300 vga_draw_line16_8,
1301 vga_draw_line16_15,
1302 vga_draw_line16_16,
1303 vga_draw_line16_32,
1304 vga_draw_line16_32bgr,
1305
1306 vga_draw_line24_8,
1307 vga_draw_line24_15,
1308 vga_draw_line24_16,
1309 vga_draw_line24_32,
1310 vga_draw_line24_32bgr,
1311
1312 vga_draw_line32_8,
1313 vga_draw_line32_15,
1314 vga_draw_line32_16,
1315 vga_draw_line32_32,
1316 vga_draw_line32_32bgr,
1317};
1318
1319typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1320
1321static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1322 rgb_to_pixel8_dup,
1323 rgb_to_pixel15_dup,
1324 rgb_to_pixel16_dup,
1325 rgb_to_pixel32_dup,
1326 rgb_to_pixel32bgr_dup,
1327};
1328
1329static int vga_get_bpp(VGAState *s)
1330{
1331 int ret;
1332#ifdef CONFIG_BOCHS_VBE
1333 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1334 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1335 } else
1336#endif
1337 {
1338 ret = 0;
1339 }
1340 return ret;
1341}
1342
1343static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1344{
1345 int width, height;
1346
1347#ifdef CONFIG_BOCHS_VBE
1348 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1349 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1350 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1351 } else
1352#endif
1353 {
1354 width = (s->cr[0x01] + 1) * 8;
1355 height = s->cr[0x12] |
1356 ((s->cr[0x07] & 0x02) << 7) |
1357 ((s->cr[0x07] & 0x40) << 3);
1358 height = (height + 1);
1359 }
1360 *pwidth = width;
1361 *pheight = height;
1362}
1363
1364void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1365{
1366 int y;
1367 if (y1 >= VGA_MAX_HEIGHT)
1368 return;
1369 if (y2 >= VGA_MAX_HEIGHT)
1370 y2 = VGA_MAX_HEIGHT;
1371 for(y = y1; y < y2; y++) {
1372 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1373 }
1374}
1375
1376/*
1377 * graphic modes
1378 */
1379static void vga_draw_graphic(VGAState *s, int full_update)
1380{
1381 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1382 int width, height, shift_control, line_offset, page0, page1, bwidth;
1383 int disp_width, multi_scan, multi_run;
1384 uint8_t *d;
1385 uint32_t v, addr1, addr;
1386 vga_draw_line_func *vga_draw_line;
1387
1388 full_update |= update_basic_params(s);
1389
1390 s->get_resolution(s, &width, &height);
1391 disp_width = width;
1392
1393 shift_control = (s->gr[0x05] >> 5) & 3;
1394 double_scan = (s->cr[0x09] >> 7);
1395 if (shift_control != 1) {
1396 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1397 } else {
1398 /* in CGA modes, multi_scan is ignored */
1399 /* XXX: is it correct ? */
1400 multi_scan = double_scan;
1401 }
1402 multi_run = multi_scan;
1403 if (shift_control != s->shift_control ||
1404 double_scan != s->double_scan) {
1405 full_update = 1;
1406 s->shift_control = shift_control;
1407 s->double_scan = double_scan;
1408 }
1409
1410 if (shift_control == 0) {
1411 full_update |= update_palette16(s);
1412 if (s->sr[0x01] & 8) {
1413 v = VGA_DRAW_LINE4D2;
1414 disp_width <<= 1;
1415 } else {
1416 v = VGA_DRAW_LINE4;
1417 }
1418 } else if (shift_control == 1) {
1419 full_update |= update_palette16(s);
1420 if (s->sr[0x01] & 8) {
1421 v = VGA_DRAW_LINE2D2;
1422 disp_width <<= 1;
1423 } else {
1424 v = VGA_DRAW_LINE2;
1425 }
1426 } else {
1427 switch(s->get_bpp(s)) {
1428 default:
1429 case 0:
1430 full_update |= update_palette256(s);
1431 v = VGA_DRAW_LINE8D2;
1432 break;
1433 case 8:
1434 full_update |= update_palette256(s);
1435 v = VGA_DRAW_LINE8;
1436 break;
1437 case 15:
1438 v = VGA_DRAW_LINE15;
1439 break;
1440 case 16:
1441 v = VGA_DRAW_LINE16;
1442 break;
1443 case 24:
1444 v = VGA_DRAW_LINE24;
1445 break;
1446 case 32:
1447 v = VGA_DRAW_LINE32;
1448 break;
1449 }
1450 }
1451 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1452
1453 if (disp_width != s->last_width ||
1454 height != s->last_height) {
1455 dpy_resize(s->ds, disp_width, height);
1456 s->last_scr_width = disp_width;
1457 s->last_scr_height = height;
1458 s->last_width = disp_width;
1459 s->last_height = height;
1460 full_update = 1;
1461 }
1462 if (s->cursor_invalidate)
1463 s->cursor_invalidate(s);
1464
1465 line_offset = s->line_offset;
1466#if 0
1467 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",
1468 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1469#endif
1470 addr1 = (s->start_addr * 4);
1471 bwidth = width * 4;
1472 y_start = -1;
1473 page_min = 0x7fffffff;
1474 page_max = -1;
1475 d = s->ds->data;
1476 linesize = s->ds->linesize;
1477 y1 = 0;
1478 for(y = 0; y < height; y++) {
1479 addr = addr1;
1480 if (!(s->cr[0x17] & 1)) {
1481 int shift;
1482 /* CGA compatibility handling */
1483 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1484 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1485 }
1486 if (!(s->cr[0x17] & 2)) {
1487 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1488 }
1489 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1490 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1491 update = full_update |
1492 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1493 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1494 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1495 /* if wide line, can use another page */
1496 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1497 VGA_DIRTY_FLAG);
1498 }
1499 /* explicit invalidation for the hardware cursor */
1500 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1501 if (update) {
1502 if (y_start < 0)
1503 y_start = y;
1504 if (page0 < page_min)
1505 page_min = page0;
1506 if (page1 > page_max)
1507 page_max = page1;
1508 vga_draw_line(s, d, s->vram_ptr + addr, width);
1509 if (s->cursor_draw_line)
1510 s->cursor_draw_line(s, d, y);
1511 } else {
1512 if (y_start >= 0) {
1513 /* flush to display */
1514 dpy_update(s->ds, 0, y_start,
1515 disp_width, y - y_start);
1516 y_start = -1;
1517 }
1518 }
1519 if (!multi_run) {
1520 mask = (s->cr[0x17] & 3) ^ 3;
1521 if ((y1 & mask) == mask)
1522 addr1 += line_offset;
1523 y1++;
1524 multi_run = multi_scan;
1525 } else {
1526 multi_run--;
1527 }
1528 /* line compare acts on the displayed lines */
1529 if (y == s->line_compare)
1530 addr1 = 0;
1531 d += linesize;
1532 }
1533 if (y_start >= 0) {
1534 /* flush to display */
1535 dpy_update(s->ds, 0, y_start,
1536 disp_width, y - y_start);
1537 }
1538 /* reset modified pages */
1539 if (page_max != -1) {
1540 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1541 VGA_DIRTY_FLAG);
1542 }
1543 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1544}
1545
1546static void vga_draw_blank(VGAState *s, int full_update)
1547{
1548 int i, w, val;
1549 uint8_t *d;
1550
1551 if (!full_update)
1552 return;
1553 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1554 return;
1555 if (s->ds->depth == 8)
1556 val = s->rgb_to_pixel(0, 0, 0);
1557 else
1558 val = 0;
1559 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1560 d = s->ds->data;
1561 for(i = 0; i < s->last_scr_height; i++) {
1562 memset(d, val, w);
1563 d += s->ds->linesize;
1564 }
1565 dpy_update(s->ds, 0, 0,
1566 s->last_scr_width, s->last_scr_height);
1567}
1568
1569#define GMODE_TEXT 0
1570#define GMODE_GRAPH 1
1571#define GMODE_BLANK 2
1572
1573static void vga_update_display(void *opaque)
1574{
1575 VGAState *s = (VGAState *)opaque;
1576 int full_update, graphic_mode;
1577
1578 if (s->ds->depth == 0) {
1579 /* nothing to do */
1580 } else {
1581 s->rgb_to_pixel =
1582 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1583
1584 full_update = 0;
1585 if (!(s->ar_index & 0x20)) {
1586 graphic_mode = GMODE_BLANK;
1587 } else {
1588 graphic_mode = s->gr[6] & 1;
1589 }
1590 if (graphic_mode != s->graphic_mode) {
1591 s->graphic_mode = graphic_mode;
1592 full_update = 1;
1593 }
1594 switch(graphic_mode) {
1595 case GMODE_TEXT:
1596 vga_draw_text(s, full_update);
1597 break;
1598 case GMODE_GRAPH:
1599 vga_draw_graphic(s, full_update);
1600 break;
1601 case GMODE_BLANK:
1602 default:
1603 vga_draw_blank(s, full_update);
1604 break;
1605 }
1606 }
1607}
1608
1609/* force a full display refresh */
1610static void vga_invalidate_display(void *opaque)
1611{
1612 VGAState *s = (VGAState *)opaque;
1613
1614 s->last_width = -1;
1615 s->last_height = -1;
1616}
1617
1618static void vga_reset(VGAState *s)
1619{
1620 memset(s, 0, sizeof(VGAState));
1621 s->graphic_mode = -1; /* force full update */
1622}
1623
1624static CPUReadMemoryFunc *vga_mem_read[3] = {
1625 vga_mem_readb,
1626 vga_mem_readw,
1627 vga_mem_readl,
1628};
1629
1630static CPUWriteMemoryFunc *vga_mem_write[3] = {
1631 vga_mem_writeb,
1632 vga_mem_writew,
1633 vga_mem_writel,
1634};
1635
1636static void vga_save(QEMUFile *f, void *opaque)
1637{
1638 VGAState *s = opaque;
1639 int i;
1640
1641 if (s->pci_dev)
1642 pci_device_save(s->pci_dev, f);
1643
1644 qemu_put_be32s(f, &s->latch);
1645 qemu_put_8s(f, &s->sr_index);
1646 qemu_put_buffer(f, s->sr, 8);
1647 qemu_put_8s(f, &s->gr_index);
1648 qemu_put_buffer(f, s->gr, 16);
1649 qemu_put_8s(f, &s->ar_index);
1650 qemu_put_buffer(f, s->ar, 21);
1651 qemu_put_be32s(f, &s->ar_flip_flop);
1652 qemu_put_8s(f, &s->cr_index);
1653 qemu_put_buffer(f, s->cr, 256);
1654 qemu_put_8s(f, &s->msr);
1655 qemu_put_8s(f, &s->fcr);
1656 qemu_put_8s(f, &s->st00);
1657 qemu_put_8s(f, &s->st01);
1658
1659 qemu_put_8s(f, &s->dac_state);
1660 qemu_put_8s(f, &s->dac_sub_index);
1661 qemu_put_8s(f, &s->dac_read_index);
1662 qemu_put_8s(f, &s->dac_write_index);
1663 qemu_put_buffer(f, s->dac_cache, 3);
1664 qemu_put_buffer(f, s->palette, 768);
1665
1666 qemu_put_be32s(f, &s->bank_offset);
1667#ifdef CONFIG_BOCHS_VBE
1668 qemu_put_byte(f, 1);
1669 qemu_put_be16s(f, &s->vbe_index);
1670 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1671 qemu_put_be16s(f, &s->vbe_regs[i]);
1672 qemu_put_be32s(f, &s->vbe_start_addr);
1673 qemu_put_be32s(f, &s->vbe_line_offset);
1674 qemu_put_be32s(f, &s->vbe_bank_mask);
1675#else
1676 qemu_put_byte(f, 0);
1677#endif
1678}
1679
1680static int vga_load(QEMUFile *f, void *opaque, int version_id)
1681{
1682 VGAState *s = opaque;
1683 int is_vbe, i, ret;
1684
1685 if (version_id > 2)
1686 return -EINVAL;
1687
1688 if (s->pci_dev && version_id >= 2) {
1689 ret = pci_device_load(s->pci_dev, f);
1690 if (ret < 0)
1691 return ret;
1692 }
1693
1694 qemu_get_be32s(f, &s->latch);
1695 qemu_get_8s(f, &s->sr_index);
1696 qemu_get_buffer(f, s->sr, 8);
1697 qemu_get_8s(f, &s->gr_index);
1698 qemu_get_buffer(f, s->gr, 16);
1699 qemu_get_8s(f, &s->ar_index);
1700 qemu_get_buffer(f, s->ar, 21);
1701 qemu_get_be32s(f, &s->ar_flip_flop);
1702 qemu_get_8s(f, &s->cr_index);
1703 qemu_get_buffer(f, s->cr, 256);
1704 qemu_get_8s(f, &s->msr);
1705 qemu_get_8s(f, &s->fcr);
1706 qemu_get_8s(f, &s->st00);
1707 qemu_get_8s(f, &s->st01);
1708
1709 qemu_get_8s(f, &s->dac_state);
1710 qemu_get_8s(f, &s->dac_sub_index);
1711 qemu_get_8s(f, &s->dac_read_index);
1712 qemu_get_8s(f, &s->dac_write_index);
1713 qemu_get_buffer(f, s->dac_cache, 3);
1714 qemu_get_buffer(f, s->palette, 768);
1715
1716 qemu_get_be32s(f, &s->bank_offset);
1717 is_vbe = qemu_get_byte(f);
1718#ifdef CONFIG_BOCHS_VBE
1719 if (!is_vbe)
1720 return -EINVAL;
1721 qemu_get_be16s(f, &s->vbe_index);
1722 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1723 qemu_get_be16s(f, &s->vbe_regs[i]);
1724 qemu_get_be32s(f, &s->vbe_start_addr);
1725 qemu_get_be32s(f, &s->vbe_line_offset);
1726 qemu_get_be32s(f, &s->vbe_bank_mask);
1727#else
1728 if (is_vbe)
1729 return -EINVAL;
1730#endif
1731
1732 /* force refresh */
1733 s->graphic_mode = -1;
1734 return 0;
1735}
1736
1737typedef struct PCIVGAState {
1738 PCIDevice dev;
1739 VGAState vga_state;
1740} PCIVGAState;
1741
1742static void vga_map(PCIDevice *pci_dev, int region_num,
1743 uint32_t addr, uint32_t size, int type)
1744{
1745 PCIVGAState *d = (PCIVGAState *)pci_dev;
1746 VGAState *s = &d->vga_state;
1747 if (region_num == PCI_ROM_SLOT) {
1748 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
1749 } else {
1750 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1751 }
1752}
1753
1754void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1755 unsigned long vga_ram_offset, int vga_ram_size)
1756{
1757 int i, j, v, b;
1758
1759 for(i = 0;i < 256; i++) {
1760 v = 0;
1761 for(j = 0; j < 8; j++) {
1762 v |= ((i >> j) & 1) << (j * 4);
1763 }
1764 expand4[i] = v;
1765
1766 v = 0;
1767 for(j = 0; j < 4; j++) {
1768 v |= ((i >> (2 * j)) & 3) << (j * 4);
1769 }
1770 expand2[i] = v;
1771 }
1772 for(i = 0; i < 16; i++) {
1773 v = 0;
1774 for(j = 0; j < 4; j++) {
1775 b = ((i >> j) & 1);
1776 v |= b << (2 * j);
1777 v |= b << (2 * j + 1);
1778 }
1779 expand4to8[i] = v;
1780 }
1781
1782 vga_reset(s);
1783
1784 s->vram_ptr = vga_ram_base;
1785 s->vram_offset = vga_ram_offset;
1786 s->vram_size = vga_ram_size;
1787 s->ds = ds;
1788 s->get_bpp = vga_get_bpp;
1789 s->get_offsets = vga_get_offsets;
1790 s->get_resolution = vga_get_resolution;
1791 s->update = vga_update_display;
1792 s->invalidate = vga_invalidate_display;
1793 s->screen_dump = vga_screen_dump;
1794}
1795
1796/* used by both ISA and PCI */
1797void vga_init(VGAState *s)
1798{
1799 int vga_io_memory;
1800
1801 register_savevm("vga", 0, 2, vga_save, vga_load, s);
1802
1803 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
1804
1805 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1806 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1807 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1808 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
1809
1810 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
1811
1812 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1813 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1814 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1815 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
1816 s->bank_offset = 0;
1817
1818#ifdef CONFIG_BOCHS_VBE
1819 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1820 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
1821#if defined (TARGET_I386)
1822 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1823 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
1824
1825 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1826 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
1827
1828 /* old Bochs IO ports */
1829 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1830 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
1831
1832 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1833 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1834#else
1835 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1836 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1837
1838 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1839 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
1840#endif
1841#endif /* CONFIG_BOCHS_VBE */
1842
1843 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
1844 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1845 vga_io_memory);
1846}
1847
1848int isa_vga_init(DisplayState *ds, uint8_t *vga_ram_base,
1849 unsigned long vga_ram_offset, int vga_ram_size)
1850{
1851 VGAState *s;
1852
1853 s = qemu_mallocz(sizeof(VGAState));
1854 if (!s)
1855 return -1;
1856
1857 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1858 vga_init(s);
1859
1860 graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump, s);
1861
1862#ifdef CONFIG_BOCHS_VBE
1863 /* XXX: use optimized standard vga accesses */
1864 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1865 vga_ram_size, vga_ram_offset);
1866#endif
1867 return 0;
1868}
1869
1870int pci_vga_init(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
1871 unsigned long vga_ram_offset, int vga_ram_size,
1872 unsigned long vga_bios_offset, int vga_bios_size)
1873{
1874 PCIVGAState *d;
1875 VGAState *s;
1876 uint8_t *pci_conf;
1877
1878 d = (PCIVGAState *)pci_register_device(bus, "VGA",
1879 sizeof(PCIVGAState),
1880 -1, NULL, NULL);
1881 if (!d)
1882 return -1;
1883 s = &d->vga_state;
1884
1885 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1886 vga_init(s);
1887
1888 graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump, s);
1889
1890 s->pci_dev = &d->dev;
1891
1892 pci_conf = d->dev.config;
1893 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1894 pci_conf[0x01] = 0x12;
1895 pci_conf[0x02] = 0x11;
1896 pci_conf[0x03] = 0x11;
1897 pci_conf[0x0a] = 0x00; // VGA controller
1898 pci_conf[0x0b] = 0x03;
1899 pci_conf[0x0e] = 0x00; // header_type
1900
1901 /* XXX: vga_ram_size must be a power of two */
1902 pci_register_io_region(&d->dev, 0, vga_ram_size,
1903 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1904 if (vga_bios_size != 0) {
1905 unsigned int bios_total_size;
1906 s->bios_offset = vga_bios_offset;
1907 s->bios_size = vga_bios_size;
1908 /* must be a power of two */
1909 bios_total_size = 1;
1910 while (bios_total_size < vga_bios_size)
1911 bios_total_size <<= 1;
1912 pci_register_io_region(&d->dev, PCI_ROM_SLOT, bios_total_size,
1913 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1914 }
1915 return 0;
1916}
1917
1918/********************************************************/
1919/* vga screen dump */
1920
1921static int vga_save_w, vga_save_h;
1922
1923static void vga_save_dpy_update(DisplayState *s,
1924 int x, int y, int w, int h)
1925{
1926}
1927
1928static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1929{
1930 s->linesize = w * 4;
1931 s->data = qemu_malloc(h * s->linesize);
1932 vga_save_w = w;
1933 vga_save_h = h;
1934}
1935
1936static void vga_save_dpy_refresh(DisplayState *s)
1937{
1938}
1939
1940static int ppm_save(const char *filename, uint8_t *data,
1941 int w, int h, int linesize)
1942{
1943 FILE *f;
1944 uint8_t *d, *d1;
1945 unsigned int v;
1946 int y, x;
1947
1948 f = fopen(filename, "wb");
1949 if (!f)
1950 return -1;
1951 fprintf(f, "P6\n%d %d\n%d\n",
1952 w, h, 255);
1953 d1 = data;
1954 for(y = 0; y < h; y++) {
1955 d = d1;
1956 for(x = 0; x < w; x++) {
1957 v = *(uint32_t *)d;
1958 fputc((v >> 16) & 0xff, f);
1959 fputc((v >> 8) & 0xff, f);
1960 fputc((v) & 0xff, f);
1961 d += 4;
1962 }
1963 d1 += linesize;
1964 }
1965 fclose(f);
1966 return 0;
1967}
1968
1969/* save the vga display in a PPM image even if no display is
1970 available */
1971static void vga_screen_dump(void *opaque, const char *filename)
1972{
1973 VGAState *s = (VGAState *)opaque;
1974 DisplayState *saved_ds, ds1, *ds = &ds1;
1975
1976 /* XXX: this is a little hackish */
1977 vga_invalidate_display(s);
1978 saved_ds = s->ds;
1979
1980 memset(ds, 0, sizeof(DisplayState));
1981 ds->dpy_update = vga_save_dpy_update;
1982 ds->dpy_resize = vga_save_dpy_resize;
1983 ds->dpy_refresh = vga_save_dpy_refresh;
1984 ds->depth = 32;
1985
1986 s->ds = ds;
1987 s->graphic_mode = -1;
1988 vga_update_display(s);
1989
1990 if (ds->data) {
1991 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1992 s->ds->linesize);
1993 qemu_free(ds->data);
1994 }
1995 s->ds = saved_ds;
1996}
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