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Register reset handlers
[qemu/mini2440/sniper_sniper_test.git] / hw / vga.c
blob058a77cc72a884b9beef76f622fc2e75ab148eb0
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 if (s->bgr)
1161 return 5;
1162 else
1163 return 1;
1164 case 16:
1165 if (s->bgr)
1166 return 6;
1167 else
1168 return 2;
1169 case 32:
1170 if (s->bgr)
1171 return 4;
1172 else
1173 return 3;
1174 }
1175 }
1176
1177 static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1178 vga_draw_glyph8_8,
1179 vga_draw_glyph8_16,
1180 vga_draw_glyph8_16,
1181 vga_draw_glyph8_32,
1182 vga_draw_glyph8_32,
1183 vga_draw_glyph8_16,
1184 vga_draw_glyph8_16,
1185 };
1186
1187 static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1188 vga_draw_glyph16_8,
1189 vga_draw_glyph16_16,
1190 vga_draw_glyph16_16,
1191 vga_draw_glyph16_32,
1192 vga_draw_glyph16_32,
1193 vga_draw_glyph16_16,
1194 vga_draw_glyph16_16,
1195 };
1196
1197 static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
1198 vga_draw_glyph9_8,
1199 vga_draw_glyph9_16,
1200 vga_draw_glyph9_16,
1201 vga_draw_glyph9_32,
1202 vga_draw_glyph9_32,
1203 vga_draw_glyph9_16,
1204 vga_draw_glyph9_16,
1205 };
1206
1207 static const uint8_t cursor_glyph[32 * 4] = {
1208 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1209 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1210 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1211 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1212 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1213 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1214 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1215 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1216 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1217 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1218 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1219 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1220 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1221 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1222 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1223 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1224 };
1225
1226 /*
1227 * Text mode update
1228 * Missing:
1229 * - double scan
1230 * - double width
1231 * - underline
1232 * - flashing
1233 */
1234 static void vga_draw_text(VGAState *s, int full_update)
1235 {
1236 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1237 int cx_min, cx_max, linesize, x_incr;
1238 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1239 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1240 const uint8_t *font_ptr, *font_base[2];
1241 int dup9, line_offset, depth_index;
1242 uint32_t *palette;
1243 uint32_t *ch_attr_ptr;
1244 vga_draw_glyph8_func *vga_draw_glyph8;
1245 vga_draw_glyph9_func *vga_draw_glyph9;
1246
1247 vga_dirty_log_stop(s);
1248
1249 full_update |= update_palette16(s);
1250 palette = s->last_palette;
1251
1252 /* compute font data address (in plane 2) */
1253 v = s->sr[3];
1254 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1255 if (offset != s->font_offsets[0]) {
1256 s->font_offsets[0] = offset;
1257 full_update = 1;
1258 }
1259 font_base[0] = s->vram_ptr + offset;
1260
1261 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1262 font_base[1] = s->vram_ptr + offset;
1263 if (offset != s->font_offsets[1]) {
1264 s->font_offsets[1] = offset;
1265 full_update = 1;
1266 }
1267 if (s->plane_updated & (1 << 2)) {
1268 /* if the plane 2 was modified since the last display, it
1269 indicates the font may have been modified */
1270 s->plane_updated = 0;
1271 full_update = 1;
1272 }
1273 full_update |= update_basic_params(s);
1274
1275 line_offset = s->line_offset;
1276 s1 = s->vram_ptr + (s->start_addr * 4);
1277
1278 /* total width & height */
1279 cheight = (s->cr[9] & 0x1f) + 1;
1280 cw = 8;
1281 if (!(s->sr[1] & 0x01))
1282 cw = 9;
1283 if (s->sr[1] & 0x08)
1284 cw = 16; /* NOTE: no 18 pixel wide */
1285 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1286 width = (s->cr[0x01] + 1);
1287 if (s->cr[0x06] == 100) {
1288 /* ugly hack for CGA 160x100x16 - explain me the logic */
1289 height = 100;
1290 } else {
1291 height = s->cr[0x12] |
1292 ((s->cr[0x07] & 0x02) << 7) |
1293 ((s->cr[0x07] & 0x40) << 3);
1294 height = (height + 1) / cheight;
1295 }
1296 if ((height * width) > CH_ATTR_SIZE) {
1297 /* better than nothing: exit if transient size is too big */
1298 return;
1299 }
1300
1301 if (width != s->last_width || height != s->last_height ||
1302 cw != s->last_cw || cheight != s->last_ch) {
1303 s->last_scr_width = width * cw;
1304 s->last_scr_height = height * cheight;
1305 qemu_console_resize(s->console, s->last_scr_width, s->last_scr_height);
1306 s->last_width = width;
1307 s->last_height = height;
1308 s->last_ch = cheight;
1309 s->last_cw = cw;
1310 full_update = 1;
1311 }
1312 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1313 if (cursor_offset != s->cursor_offset ||
1314 s->cr[0xa] != s->cursor_start ||
1315 s->cr[0xb] != s->cursor_end) {
1316 /* if the cursor position changed, we update the old and new
1317 chars */
1318 if (s->cursor_offset < CH_ATTR_SIZE)
1319 s->last_ch_attr[s->cursor_offset] = -1;
1320 if (cursor_offset < CH_ATTR_SIZE)
1321 s->last_ch_attr[cursor_offset] = -1;
1322 s->cursor_offset = cursor_offset;
1323 s->cursor_start = s->cr[0xa];
1324 s->cursor_end = s->cr[0xb];
1325 }
1326 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1327
1328 depth_index = get_depth_index(s->ds);
1329 if (cw == 16)
1330 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1331 else
1332 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1333 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1334
1335 dest = ds_get_data(s->ds);
1336 linesize = ds_get_linesize(s->ds);
1337 ch_attr_ptr = s->last_ch_attr;
1338 for(cy = 0; cy < height; cy++) {
1339 d1 = dest;
1340 src = s1;
1341 cx_min = width;
1342 cx_max = -1;
1343 for(cx = 0; cx < width; cx++) {
1344 ch_attr = *(uint16_t *)src;
1345 if (full_update || ch_attr != *ch_attr_ptr) {
1346 if (cx < cx_min)
1347 cx_min = cx;
1348 if (cx > cx_max)
1349 cx_max = cx;
1350 *ch_attr_ptr = ch_attr;
1351 #ifdef WORDS_BIGENDIAN
1352 ch = ch_attr >> 8;
1353 cattr = ch_attr & 0xff;
1354 #else
1355 ch = ch_attr & 0xff;
1356 cattr = ch_attr >> 8;
1357 #endif
1358 font_ptr = font_base[(cattr >> 3) & 1];
1359 font_ptr += 32 * 4 * ch;
1360 bgcol = palette[cattr >> 4];
1361 fgcol = palette[cattr & 0x0f];
1362 if (cw != 9) {
1363 vga_draw_glyph8(d1, linesize,
1364 font_ptr, cheight, fgcol, bgcol);
1365 } else {
1366 dup9 = 0;
1367 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1368 dup9 = 1;
1369 vga_draw_glyph9(d1, linesize,
1370 font_ptr, cheight, fgcol, bgcol, dup9);
1371 }
1372 if (src == cursor_ptr &&
1373 !(s->cr[0x0a] & 0x20)) {
1374 int line_start, line_last, h;
1375 /* draw the cursor */
1376 line_start = s->cr[0x0a] & 0x1f;
1377 line_last = s->cr[0x0b] & 0x1f;
1378 /* XXX: check that */
1379 if (line_last > cheight - 1)
1380 line_last = cheight - 1;
1381 if (line_last >= line_start && line_start < cheight) {
1382 h = line_last - line_start + 1;
1383 d = d1 + linesize * line_start;
1384 if (cw != 9) {
1385 vga_draw_glyph8(d, linesize,
1386 cursor_glyph, h, fgcol, bgcol);
1387 } else {
1388 vga_draw_glyph9(d, linesize,
1389 cursor_glyph, h, fgcol, bgcol, 1);
1390 }
1391 }
1392 }
1393 }
1394 d1 += x_incr;
1395 src += 4;
1396 ch_attr_ptr++;
1397 }
1398 if (cx_max != -1) {
1399 dpy_update(s->ds, cx_min * cw, cy * cheight,
1400 (cx_max - cx_min + 1) * cw, cheight);
1401 }
1402 dest += linesize * cheight;
1403 s1 += line_offset;
1404 }
1405 }
1406
1407 enum {
1408 VGA_DRAW_LINE2,
1409 VGA_DRAW_LINE2D2,
1410 VGA_DRAW_LINE4,
1411 VGA_DRAW_LINE4D2,
1412 VGA_DRAW_LINE8D2,
1413 VGA_DRAW_LINE8,
1414 VGA_DRAW_LINE15,
1415 VGA_DRAW_LINE16,
1416 VGA_DRAW_LINE24,
1417 VGA_DRAW_LINE32,
1418 VGA_DRAW_LINE_NB,
1419 };
1420
1421 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1422 vga_draw_line2_8,
1423 vga_draw_line2_16,
1424 vga_draw_line2_16,
1425 vga_draw_line2_32,
1426 vga_draw_line2_32,
1427 vga_draw_line2_16,
1428 vga_draw_line2_16,
1429
1430 vga_draw_line2d2_8,
1431 vga_draw_line2d2_16,
1432 vga_draw_line2d2_16,
1433 vga_draw_line2d2_32,
1434 vga_draw_line2d2_32,
1435 vga_draw_line2d2_16,
1436 vga_draw_line2d2_16,
1437
1438 vga_draw_line4_8,
1439 vga_draw_line4_16,
1440 vga_draw_line4_16,
1441 vga_draw_line4_32,
1442 vga_draw_line4_32,
1443 vga_draw_line4_16,
1444 vga_draw_line4_16,
1445
1446 vga_draw_line4d2_8,
1447 vga_draw_line4d2_16,
1448 vga_draw_line4d2_16,
1449 vga_draw_line4d2_32,
1450 vga_draw_line4d2_32,
1451 vga_draw_line4d2_16,
1452 vga_draw_line4d2_16,
1453
1454 vga_draw_line8d2_8,
1455 vga_draw_line8d2_16,
1456 vga_draw_line8d2_16,
1457 vga_draw_line8d2_32,
1458 vga_draw_line8d2_32,
1459 vga_draw_line8d2_16,
1460 vga_draw_line8d2_16,
1461
1462 vga_draw_line8_8,
1463 vga_draw_line8_16,
1464 vga_draw_line8_16,
1465 vga_draw_line8_32,
1466 vga_draw_line8_32,
1467 vga_draw_line8_16,
1468 vga_draw_line8_16,
1469
1470 vga_draw_line15_8,
1471 vga_draw_line15_15,
1472 vga_draw_line15_16,
1473 vga_draw_line15_32,
1474 vga_draw_line15_32bgr,
1475 vga_draw_line15_15bgr,
1476 vga_draw_line15_16bgr,
1477
1478 vga_draw_line16_8,
1479 vga_draw_line16_15,
1480 vga_draw_line16_16,
1481 vga_draw_line16_32,
1482 vga_draw_line16_32bgr,
1483 vga_draw_line16_15bgr,
1484 vga_draw_line16_16bgr,
1485
1486 vga_draw_line24_8,
1487 vga_draw_line24_15,
1488 vga_draw_line24_16,
1489 vga_draw_line24_32,
1490 vga_draw_line24_32bgr,
1491 vga_draw_line24_15bgr,
1492 vga_draw_line24_16bgr,
1493
1494 vga_draw_line32_8,
1495 vga_draw_line32_15,
1496 vga_draw_line32_16,
1497 vga_draw_line32_32,
1498 vga_draw_line32_32bgr,
1499 vga_draw_line32_15bgr,
1500 vga_draw_line32_16bgr,
1501 };
1502
1503 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1504
1505 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1506 rgb_to_pixel8_dup,
1507 rgb_to_pixel15_dup,
1508 rgb_to_pixel16_dup,
1509 rgb_to_pixel32_dup,
1510 rgb_to_pixel32bgr_dup,
1511 rgb_to_pixel15bgr_dup,
1512 rgb_to_pixel16bgr_dup,
1513 };
1514
1515 static int vga_get_bpp(VGAState *s)
1516 {
1517 int ret;
1518 #ifdef CONFIG_BOCHS_VBE
1519 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1520 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1521 } else
1522 #endif
1523 {
1524 ret = 0;
1525 }
1526 return ret;
1527 }
1528
1529 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1530 {
1531 int width, height;
1532
1533 #ifdef CONFIG_BOCHS_VBE
1534 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1535 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1536 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1537 } else
1538 #endif
1539 {
1540 width = (s->cr[0x01] + 1) * 8;
1541 height = s->cr[0x12] |
1542 ((s->cr[0x07] & 0x02) << 7) |
1543 ((s->cr[0x07] & 0x40) << 3);
1544 height = (height + 1);
1545 }
1546 *pwidth = width;
1547 *pheight = height;
1548 }
1549
1550 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1551 {
1552 int y;
1553 if (y1 >= VGA_MAX_HEIGHT)
1554 return;
1555 if (y2 >= VGA_MAX_HEIGHT)
1556 y2 = VGA_MAX_HEIGHT;
1557 for(y = y1; y < y2; y++) {
1558 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1559 }
1560 }
1561
1562 static void vga_sync_dirty_bitmap(VGAState *s)
1563 {
1564 if (s->map_addr)
1565 cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end);
1566
1567 if (s->lfb_vram_mapped) {
1568 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000);
1569 cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000);
1570 }
1571 vga_dirty_log_start(s);
1572 }
1573
1574 /*
1575 * graphic modes
1576 */
1577 static void vga_draw_graphic(VGAState *s, int full_update)
1578 {
1579 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1580 int width, height, shift_control, line_offset, page0, page1, bwidth, bits;
1581 int disp_width, multi_scan, multi_run;
1582 uint8_t *d;
1583 uint32_t v, addr1, addr;
1584 vga_draw_line_func *vga_draw_line;
1585
1586 full_update |= update_basic_params(s);
1587
1588 if (!full_update)
1589 vga_sync_dirty_bitmap(s);
1590
1591 s->get_resolution(s, &width, &height);
1592 disp_width = width;
1593
1594 shift_control = (s->gr[0x05] >> 5) & 3;
1595 double_scan = (s->cr[0x09] >> 7);
1596 if (shift_control != 1) {
1597 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1598 } else {
1599 /* in CGA modes, multi_scan is ignored */
1600 /* XXX: is it correct ? */
1601 multi_scan = double_scan;
1602 }
1603 multi_run = multi_scan;
1604 if (shift_control != s->shift_control ||
1605 double_scan != s->double_scan) {
1606 full_update = 1;
1607 s->shift_control = shift_control;
1608 s->double_scan = double_scan;
1609 }
1610
1611 if (shift_control == 0) {
1612 full_update |= update_palette16(s);
1613 if (s->sr[0x01] & 8) {
1614 v = VGA_DRAW_LINE4D2;
1615 disp_width <<= 1;
1616 } else {
1617 v = VGA_DRAW_LINE4;
1618 }
1619 bits = 4;
1620 } else if (shift_control == 1) {
1621 full_update |= update_palette16(s);
1622 if (s->sr[0x01] & 8) {
1623 v = VGA_DRAW_LINE2D2;
1624 disp_width <<= 1;
1625 } else {
1626 v = VGA_DRAW_LINE2;
1627 }
1628 bits = 4;
1629 } else {
1630 switch(s->get_bpp(s)) {
1631 default:
1632 case 0:
1633 full_update |= update_palette256(s);
1634 v = VGA_DRAW_LINE8D2;
1635 bits = 4;
1636 break;
1637 case 8:
1638 full_update |= update_palette256(s);
1639 v = VGA_DRAW_LINE8;
1640 bits = 8;
1641 break;
1642 case 15:
1643 v = VGA_DRAW_LINE15;
1644 bits = 16;
1645 break;
1646 case 16:
1647 v = VGA_DRAW_LINE16;
1648 bits = 16;
1649 break;
1650 case 24:
1651 v = VGA_DRAW_LINE24;
1652 bits = 24;
1653 break;
1654 case 32:
1655 v = VGA_DRAW_LINE32;
1656 bits = 32;
1657 break;
1658 }
1659 }
1660 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1661
1662 if (disp_width != s->last_width ||
1663 height != s->last_height) {
1664 qemu_console_resize(s->console, disp_width, height);
1665 s->last_scr_width = disp_width;
1666 s->last_scr_height = height;
1667 s->last_width = disp_width;
1668 s->last_height = height;
1669 full_update = 1;
1670 }
1671 if (s->cursor_invalidate)
1672 s->cursor_invalidate(s);
1673
1674 line_offset = s->line_offset;
1675 #if 0
1676 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",
1677 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1678 #endif
1679 addr1 = (s->start_addr * 4);
1680 bwidth = (width * bits + 7) / 8;
1681 y_start = -1;
1682 page_min = 0x7fffffff;
1683 page_max = -1;
1684 d = ds_get_data(s->ds);
1685 linesize = ds_get_linesize(s->ds);
1686 y1 = 0;
1687 for(y = 0; y < height; y++) {
1688 addr = addr1;
1689 if (!(s->cr[0x17] & 1)) {
1690 int shift;
1691 /* CGA compatibility handling */
1692 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1693 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1694 }
1695 if (!(s->cr[0x17] & 2)) {
1696 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1697 }
1698 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1699 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1700 update = full_update |
1701 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1702 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1703 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1704 /* if wide line, can use another page */
1705 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1706 VGA_DIRTY_FLAG);
1707 }
1708 /* explicit invalidation for the hardware cursor */
1709 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1710 if (update) {
1711 if (y_start < 0)
1712 y_start = y;
1713 if (page0 < page_min)
1714 page_min = page0;
1715 if (page1 > page_max)
1716 page_max = page1;
1717 vga_draw_line(s, d, s->vram_ptr + addr, width);
1718 if (s->cursor_draw_line)
1719 s->cursor_draw_line(s, d, y);
1720 } else {
1721 if (y_start >= 0) {
1722 /* flush to display */
1723 dpy_update(s->ds, 0, y_start,
1724 disp_width, y - y_start);
1725 y_start = -1;
1726 }
1727 }
1728 if (!multi_run) {
1729 mask = (s->cr[0x17] & 3) ^ 3;
1730 if ((y1 & mask) == mask)
1731 addr1 += line_offset;
1732 y1++;
1733 multi_run = multi_scan;
1734 } else {
1735 multi_run--;
1736 }
1737 /* line compare acts on the displayed lines */
1738 if (y == s->line_compare)
1739 addr1 = 0;
1740 d += linesize;
1741 }
1742 if (y_start >= 0) {
1743 /* flush to display */
1744 dpy_update(s->ds, 0, y_start,
1745 disp_width, y - y_start);
1746 }
1747 /* reset modified pages */
1748 if (page_max != -1) {
1749 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1750 VGA_DIRTY_FLAG);
1751 }
1752 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1753 }
1754
1755 static void vga_draw_blank(VGAState *s, int full_update)
1756 {
1757 int i, w, val;
1758 uint8_t *d;
1759
1760 if (!full_update)
1761 return;
1762 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1763 return;
1764 vga_dirty_log_stop(s);
1765
1766 if (ds_get_bits_per_pixel(s->ds) == 8)
1767 val = s->rgb_to_pixel(0, 0, 0);
1768 else
1769 val = 0;
1770 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1771 d = ds_get_data(s->ds);
1772 for(i = 0; i < s->last_scr_height; i++) {
1773 memset(d, val, w);
1774 d += ds_get_linesize(s->ds);
1775 }
1776 dpy_update(s->ds, 0, 0,
1777 s->last_scr_width, s->last_scr_height);
1778 }
1779
1780 #define GMODE_TEXT 0
1781 #define GMODE_GRAPH 1
1782 #define GMODE_BLANK 2
1783
1784 static void vga_update_display(void *opaque)
1785 {
1786 VGAState *s = (VGAState *)opaque;
1787 int full_update, graphic_mode;
1788
1789 if (ds_get_bits_per_pixel(s->ds) == 0) {
1790 /* nothing to do */
1791 } else {
1792 s->rgb_to_pixel =
1793 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1794
1795 full_update = 0;
1796 if (!(s->ar_index & 0x20)) {
1797 graphic_mode = GMODE_BLANK;
1798 } else {
1799 graphic_mode = s->gr[6] & 1;
1800 }
1801 if (graphic_mode != s->graphic_mode) {
1802 s->graphic_mode = graphic_mode;
1803 full_update = 1;
1804 }
1805 switch(graphic_mode) {
1806 case GMODE_TEXT:
1807 vga_draw_text(s, full_update);
1808 break;
1809 case GMODE_GRAPH:
1810 vga_draw_graphic(s, full_update);
1811 break;
1812 case GMODE_BLANK:
1813 default:
1814 vga_draw_blank(s, full_update);
1815 break;
1816 }
1817 }
1818 }
1819
1820 /* force a full display refresh */
1821 static void vga_invalidate_display(void *opaque)
1822 {
1823 VGAState *s = (VGAState *)opaque;
1824
1825 s->last_width = -1;
1826 s->last_height = -1;
1827 }
1828
1829 static void vga_reset(void *opaque)
1830 {
1831 VGAState *s = (VGAState *) opaque;
1832
1833 s->lfb_addr = 0;
1834 s->lfb_end = 0;
1835 s->map_addr = 0;
1836 s->map_end = 0;
1837 s->lfb_vram_mapped = 0;
1838 s->bios_offset = 0;
1839 s->bios_size = 0;
1840 s->sr_index = 0;
1841 memset(s->sr, '\0', sizeof(s->sr));
1842 s->gr_index = 0;
1843 memset(s->gr, '\0', sizeof(s->gr));
1844 s->ar_index = 0;
1845 memset(s->ar, '\0', sizeof(s->ar));
1846 s->ar_flip_flop = 0;
1847 s->cr_index = 0;
1848 memset(s->cr, '\0', sizeof(s->cr));
1849 s->msr = 0;
1850 s->fcr = 0;
1851 s->st00 = 0;
1852 s->st01 = 0;
1853 s->dac_state = 0;
1854 s->dac_sub_index = 0;
1855 s->dac_read_index = 0;
1856 s->dac_write_index = 0;
1857 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1858 s->dac_8bit = 0;
1859 memset(s->palette, '\0', sizeof(s->palette));
1860 s->bank_offset = 0;
1861 #ifdef CONFIG_BOCHS_VBE
1862 s->vbe_index = 0;
1863 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1864 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1865 s->vbe_start_addr = 0;
1866 s->vbe_line_offset = 0;
1867 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1868 #endif
1869 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1870 s->graphic_mode = -1; /* force full update */
1871 s->shift_control = 0;
1872 s->double_scan = 0;
1873 s->line_offset = 0;
1874 s->line_compare = 0;
1875 s->start_addr = 0;
1876 s->plane_updated = 0;
1877 s->last_cw = 0;
1878 s->last_ch = 0;
1879 s->last_width = 0;
1880 s->last_height = 0;
1881 s->last_scr_width = 0;
1882 s->last_scr_height = 0;
1883 s->cursor_start = 0;
1884 s->cursor_end = 0;
1885 s->cursor_offset = 0;
1886 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1887 memset(s->last_palette, '\0', sizeof(s->last_palette));
1888 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1889 switch (vga_retrace_method) {
1890 case VGA_RETRACE_DUMB:
1891 break;
1892 case VGA_RETRACE_PRECISE:
1893 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1894 break;
1895 }
1896 }
1897
1898 #define TEXTMODE_X(x) ((x) % width)
1899 #define TEXTMODE_Y(x) ((x) / width)
1900 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1901 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1902 /* relay text rendering to the display driver
1903 * instead of doing a full vga_update_display() */
1904 static void vga_update_text(void *opaque, console_ch_t *chardata)
1905 {
1906 VGAState *s = (VGAState *) opaque;
1907 int graphic_mode, i, cursor_offset, cursor_visible;
1908 int cw, cheight, width, height, size, c_min, c_max;
1909 uint32_t *src;
1910 console_ch_t *dst, val;
1911 char msg_buffer[80];
1912 int full_update = 0;
1913
1914 if (!(s->ar_index & 0x20)) {
1915 graphic_mode = GMODE_BLANK;
1916 } else {
1917 graphic_mode = s->gr[6] & 1;
1918 }
1919 if (graphic_mode != s->graphic_mode) {
1920 s->graphic_mode = graphic_mode;
1921 full_update = 1;
1922 }
1923 if (s->last_width == -1) {
1924 s->last_width = 0;
1925 full_update = 1;
1926 }
1927
1928 switch (graphic_mode) {
1929 case GMODE_TEXT:
1930 /* TODO: update palette */
1931 full_update |= update_basic_params(s);
1932
1933 /* total width & height */
1934 cheight = (s->cr[9] & 0x1f) + 1;
1935 cw = 8;
1936 if (!(s->sr[1] & 0x01))
1937 cw = 9;
1938 if (s->sr[1] & 0x08)
1939 cw = 16; /* NOTE: no 18 pixel wide */
1940 width = (s->cr[0x01] + 1);
1941 if (s->cr[0x06] == 100) {
1942 /* ugly hack for CGA 160x100x16 - explain me the logic */
1943 height = 100;
1944 } else {
1945 height = s->cr[0x12] |
1946 ((s->cr[0x07] & 0x02) << 7) |
1947 ((s->cr[0x07] & 0x40) << 3);
1948 height = (height + 1) / cheight;
1949 }
1950
1951 size = (height * width);
1952 if (size > CH_ATTR_SIZE) {
1953 if (!full_update)
1954 return;
1955
1956 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
1957 width, height);
1958 break;
1959 }
1960
1961 if (width != s->last_width || height != s->last_height ||
1962 cw != s->last_cw || cheight != s->last_ch) {
1963 s->last_scr_width = width * cw;
1964 s->last_scr_height = height * cheight;
1965 qemu_console_resize(s->console, width, height);
1966 s->last_width = width;
1967 s->last_height = height;
1968 s->last_ch = cheight;
1969 s->last_cw = cw;
1970 full_update = 1;
1971 }
1972
1973 /* Update "hardware" cursor */
1974 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1975 if (cursor_offset != s->cursor_offset ||
1976 s->cr[0xa] != s->cursor_start ||
1977 s->cr[0xb] != s->cursor_end || full_update) {
1978 cursor_visible = !(s->cr[0xa] & 0x20);
1979 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
1980 dpy_cursor(s->ds,
1981 TEXTMODE_X(cursor_offset),
1982 TEXTMODE_Y(cursor_offset));
1983 else
1984 dpy_cursor(s->ds, -1, -1);
1985 s->cursor_offset = cursor_offset;
1986 s->cursor_start = s->cr[0xa];
1987 s->cursor_end = s->cr[0xb];
1988 }
1989
1990 src = (uint32_t *) s->vram_ptr + s->start_addr;
1991 dst = chardata;
1992
1993 if (full_update) {
1994 for (i = 0; i < size; src ++, dst ++, i ++)
1995 console_write_ch(dst, VMEM2CHTYPE(*src));
1996
1997 dpy_update(s->ds, 0, 0, width, height);
1998 } else {
1999 c_max = 0;
2000
2001 for (i = 0; i < size; src ++, dst ++, i ++) {
2002 console_write_ch(&val, VMEM2CHTYPE(*src));
2003 if (*dst != val) {
2004 *dst = val;
2005 c_max = i;
2006 break;
2007 }
2008 }
2009 c_min = i;
2010 for (; i < size; src ++, dst ++, i ++) {
2011 console_write_ch(&val, VMEM2CHTYPE(*src));
2012 if (*dst != val) {
2013 *dst = val;
2014 c_max = i;
2015 }
2016 }
2017
2018 if (c_min <= c_max) {
2019 i = TEXTMODE_Y(c_min);
2020 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2021 }
2022 }
2023
2024 return;
2025 case GMODE_GRAPH:
2026 if (!full_update)
2027 return;
2028
2029 s->get_resolution(s, &width, &height);
2030 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2031 width, height);
2032 break;
2033 case GMODE_BLANK:
2034 default:
2035 if (!full_update)
2036 return;
2037
2038 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2039 break;
2040 }
2041
2042 /* Display a message */
2043 s->last_width = 60;
2044 s->last_height = height = 3;
2045 dpy_cursor(s->ds, -1, -1);
2046 qemu_console_resize(s->console, s->last_width, height);
2047
2048 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2049 console_write_ch(dst ++, ' ');
2050
2051 size = strlen(msg_buffer);
2052 width = (s->last_width - size) / 2;
2053 dst = chardata + s->last_width + width;
2054 for (i = 0; i < size; i ++)
2055 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2056
2057 dpy_update(s->ds, 0, 0, s->last_width, height);
2058 }
2059
2060 static CPUReadMemoryFunc *vga_mem_read[3] = {
2061 vga_mem_readb,
2062 vga_mem_readw,
2063 vga_mem_readl,
2064 };
2065
2066 static CPUWriteMemoryFunc *vga_mem_write[3] = {
2067 vga_mem_writeb,
2068 vga_mem_writew,
2069 vga_mem_writel,
2070 };
2071
2072 static void vga_save(QEMUFile *f, void *opaque)
2073 {
2074 VGAState *s = opaque;
2075 int i;
2076
2077 if (s->pci_dev)
2078 pci_device_save(s->pci_dev, f);
2079
2080 qemu_put_be32s(f, &s->latch);
2081 qemu_put_8s(f, &s->sr_index);
2082 qemu_put_buffer(f, s->sr, 8);
2083 qemu_put_8s(f, &s->gr_index);
2084 qemu_put_buffer(f, s->gr, 16);
2085 qemu_put_8s(f, &s->ar_index);
2086 qemu_put_buffer(f, s->ar, 21);
2087 qemu_put_be32(f, s->ar_flip_flop);
2088 qemu_put_8s(f, &s->cr_index);
2089 qemu_put_buffer(f, s->cr, 256);
2090 qemu_put_8s(f, &s->msr);
2091 qemu_put_8s(f, &s->fcr);
2092 qemu_put_byte(f, s->st00);
2093 qemu_put_8s(f, &s->st01);
2094
2095 qemu_put_8s(f, &s->dac_state);
2096 qemu_put_8s(f, &s->dac_sub_index);
2097 qemu_put_8s(f, &s->dac_read_index);
2098 qemu_put_8s(f, &s->dac_write_index);
2099 qemu_put_buffer(f, s->dac_cache, 3);
2100 qemu_put_buffer(f, s->palette, 768);
2101
2102 qemu_put_be32(f, s->bank_offset);
2103 #ifdef CONFIG_BOCHS_VBE
2104 qemu_put_byte(f, 1);
2105 qemu_put_be16s(f, &s->vbe_index);
2106 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2107 qemu_put_be16s(f, &s->vbe_regs[i]);
2108 qemu_put_be32s(f, &s->vbe_start_addr);
2109 qemu_put_be32s(f, &s->vbe_line_offset);
2110 qemu_put_be32s(f, &s->vbe_bank_mask);
2111 #else
2112 qemu_put_byte(f, 0);
2113 #endif
2114 }
2115
2116 static int vga_load(QEMUFile *f, void *opaque, int version_id)
2117 {
2118 VGAState *s = opaque;
2119 int is_vbe, i, ret;
2120
2121 if (version_id > 2)
2122 return -EINVAL;
2123
2124 if (s->pci_dev && version_id >= 2) {
2125 ret = pci_device_load(s->pci_dev, f);
2126 if (ret < 0)
2127 return ret;
2128 }
2129
2130 qemu_get_be32s(f, &s->latch);
2131 qemu_get_8s(f, &s->sr_index);
2132 qemu_get_buffer(f, s->sr, 8);
2133 qemu_get_8s(f, &s->gr_index);
2134 qemu_get_buffer(f, s->gr, 16);
2135 qemu_get_8s(f, &s->ar_index);
2136 qemu_get_buffer(f, s->ar, 21);
2137 s->ar_flip_flop=qemu_get_be32(f);
2138 qemu_get_8s(f, &s->cr_index);
2139 qemu_get_buffer(f, s->cr, 256);
2140 qemu_get_8s(f, &s->msr);
2141 qemu_get_8s(f, &s->fcr);
2142 qemu_get_8s(f, &s->st00);
2143 qemu_get_8s(f, &s->st01);
2144
2145 qemu_get_8s(f, &s->dac_state);
2146 qemu_get_8s(f, &s->dac_sub_index);
2147 qemu_get_8s(f, &s->dac_read_index);
2148 qemu_get_8s(f, &s->dac_write_index);
2149 qemu_get_buffer(f, s->dac_cache, 3);
2150 qemu_get_buffer(f, s->palette, 768);
2151
2152 s->bank_offset=qemu_get_be32(f);
2153 is_vbe = qemu_get_byte(f);
2154 #ifdef CONFIG_BOCHS_VBE
2155 if (!is_vbe)
2156 return -EINVAL;
2157 qemu_get_be16s(f, &s->vbe_index);
2158 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
2159 qemu_get_be16s(f, &s->vbe_regs[i]);
2160 qemu_get_be32s(f, &s->vbe_start_addr);
2161 qemu_get_be32s(f, &s->vbe_line_offset);
2162 qemu_get_be32s(f, &s->vbe_bank_mask);
2163 #else
2164 if (is_vbe)
2165 return -EINVAL;
2166 #endif
2167
2168 /* force refresh */
2169 s->graphic_mode = -1;
2170 return 0;
2171 }
2172
2173 typedef struct PCIVGAState {
2174 PCIDevice dev;
2175 VGAState vga_state;
2176 } PCIVGAState;
2177
2178 void vga_dirty_log_start(VGAState *s)
2179 {
2180 if (kvm_enabled() && s->map_addr)
2181 kvm_log_start(s->map_addr, s->map_end - s->map_addr);
2182
2183 if (kvm_enabled() && s->lfb_vram_mapped) {
2184 kvm_log_start(isa_mem_base + 0xa0000, 0x8000);
2185 kvm_log_start(isa_mem_base + 0xa8000, 0x8000);
2186 }
2187 }
2188
2189 void vga_dirty_log_stop(VGAState *s)
2190 {
2191 if (kvm_enabled() && s->map_addr)
2192 kvm_log_stop(s->map_addr, s->map_end - s->map_addr);
2193
2194 if (kvm_enabled() && s->lfb_vram_mapped) {
2195 kvm_log_stop(isa_mem_base + 0xa0000, 0x8000);
2196 kvm_log_stop(isa_mem_base + 0xa8000, 0x8000);
2197 }
2198 }
2199
2200 static void vga_map(PCIDevice *pci_dev, int region_num,
2201 uint32_t addr, uint32_t size, int type)
2202 {
2203 PCIVGAState *d = (PCIVGAState *)pci_dev;
2204 VGAState *s = &d->vga_state;
2205 if (region_num == PCI_ROM_SLOT) {
2206 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
2207 } else {
2208 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
2209 }
2210
2211 s->map_addr = addr;
2212 s->map_end = addr + VGA_RAM_SIZE;
2213
2214 vga_dirty_log_start(s);
2215 }
2216
2217 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
2218 ram_addr_t vga_ram_offset, int vga_ram_size)
2219 {
2220 int i, j, v, b;
2221
2222 for(i = 0;i < 256; i++) {
2223 v = 0;
2224 for(j = 0; j < 8; j++) {
2225 v |= ((i >> j) & 1) << (j * 4);
2226 }
2227 expand4[i] = v;
2228
2229 v = 0;
2230 for(j = 0; j < 4; j++) {
2231 v |= ((i >> (2 * j)) & 3) << (j * 4);
2232 }
2233 expand2[i] = v;
2234 }
2235 for(i = 0; i < 16; i++) {
2236 v = 0;
2237 for(j = 0; j < 4; j++) {
2238 b = ((i >> j) & 1);
2239 v |= b << (2 * j);
2240 v |= b << (2 * j + 1);
2241 }
2242 expand4to8[i] = v;
2243 }
2244
2245 s->vram_ptr = vga_ram_base;
2246 s->vram_offset = vga_ram_offset;
2247 s->vram_size = vga_ram_size;
2248 s->ds = ds;
2249 s->get_bpp = vga_get_bpp;
2250 s->get_offsets = vga_get_offsets;
2251 s->get_resolution = vga_get_resolution;
2252 s->update = vga_update_display;
2253 s->invalidate = vga_invalidate_display;
2254 s->screen_dump = vga_screen_dump;
2255 s->text_update = vga_update_text;
2256 switch (vga_retrace_method) {
2257 case VGA_RETRACE_DUMB:
2258 s->retrace = vga_dumb_retrace;
2259 s->update_retrace_info = vga_dumb_update_retrace_info;
2260 break;
2261
2262 case VGA_RETRACE_PRECISE:
2263 s->retrace = vga_precise_retrace;
2264 s->update_retrace_info = vga_precise_update_retrace_info;
2265 break;
2266 }
2267 qemu_register_reset(vga_reset, s);
2268 vga_reset(s);
2269 }
2270
2271 /* used by both ISA and PCI */
2272 void vga_init(VGAState *s)
2273 {
2274 int vga_io_memory;
2275
2276 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2277
2278 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2279
2280 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2281 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2282 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2283 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2284
2285 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2286
2287 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2288 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2289 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2290 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2291 s->bank_offset = 0;
2292
2293 #ifdef CONFIG_BOCHS_VBE
2294 #if defined (TARGET_I386)
2295 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2296 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2297
2298 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2299 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2300
2301 /* old Bochs IO ports */
2302 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
2303 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
2304
2305 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
2306 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
2307 #else
2308 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2309 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2310
2311 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2312 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2313 #endif
2314 #endif /* CONFIG_BOCHS_VBE */
2315
2316 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2317 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
2318 vga_io_memory);
2319 qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
2320 }
2321
2322 /* Memory mapped interface */
2323 static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr)
2324 {
2325 VGAState *s = opaque;
2326
2327 return vga_ioport_read(s, addr >> s->it_shift) & 0xff;
2328 }
2329
2330 static void vga_mm_writeb (void *opaque,
2331 target_phys_addr_t addr, uint32_t value)
2332 {
2333 VGAState *s = opaque;
2334
2335 vga_ioport_write(s, addr >> s->it_shift, value & 0xff);
2336 }
2337
2338 static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr)
2339 {
2340 VGAState *s = opaque;
2341
2342 return vga_ioport_read(s, addr >> s->it_shift) & 0xffff;
2343 }
2344
2345 static void vga_mm_writew (void *opaque,
2346 target_phys_addr_t addr, uint32_t value)
2347 {
2348 VGAState *s = opaque;
2349
2350 vga_ioport_write(s, addr >> s->it_shift, value & 0xffff);
2351 }
2352
2353 static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr)
2354 {
2355 VGAState *s = opaque;
2356
2357 return vga_ioport_read(s, addr >> s->it_shift);
2358 }
2359
2360 static void vga_mm_writel (void *opaque,
2361 target_phys_addr_t addr, uint32_t value)
2362 {
2363 VGAState *s = opaque;
2364
2365 vga_ioport_write(s, addr >> s->it_shift, value);
2366 }
2367
2368 static CPUReadMemoryFunc *vga_mm_read_ctrl[] = {
2369 &vga_mm_readb,
2370 &vga_mm_readw,
2371 &vga_mm_readl,
2372 };
2373
2374 static CPUWriteMemoryFunc *vga_mm_write_ctrl[] = {
2375 &vga_mm_writeb,
2376 &vga_mm_writew,
2377 &vga_mm_writel,
2378 };
2379
2380 static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base,
2381 target_phys_addr_t ctrl_base, int it_shift)
2382 {
2383 int s_ioport_ctrl, vga_io_memory;
2384
2385 s->it_shift = it_shift;
2386 s_ioport_ctrl = cpu_register_io_memory(0, vga_mm_read_ctrl, vga_mm_write_ctrl, s);
2387 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
2388
2389 register_savevm("vga", 0, 2, vga_save, vga_load, s);
2390
2391 cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl);
2392 s->bank_offset = 0;
2393 cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory);
2394 qemu_register_coalesced_mmio(vram_base + 0x000a0000, 0x20000);
2395 }
2396
2397 int isa_vga_init(DisplayState *ds, uint8_t *vga_ram_base,
2398 unsigned long vga_ram_offset, int vga_ram_size)
2399 {
2400 VGAState *s;
2401
2402 s = qemu_mallocz(sizeof(VGAState));
2403 if (!s)
2404 return -1;
2405
2406 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
2407 vga_init(s);
2408
2409 s->console = graphic_console_init(s->ds, s->update, s->invalidate,
2410 s->screen_dump, s->text_update, s);
2411
2412 #ifdef CONFIG_BOCHS_VBE
2413 /* XXX: use optimized standard vga accesses */
2414 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2415 vga_ram_size, vga_ram_offset);
2416 #endif
2417 return 0;
2418 }
2419
2420 int isa_vga_mm_init(DisplayState *ds, uint8_t *vga_ram_base,
2421 unsigned long vga_ram_offset, int vga_ram_size,
2422 target_phys_addr_t vram_base, target_phys_addr_t ctrl_base,
2423 int it_shift)
2424 {
2425 VGAState *s;
2426
2427 s = qemu_mallocz(sizeof(VGAState));
2428 if (!s)
2429 return -1;
2430
2431 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
2432 vga_mm_init(s, vram_base, ctrl_base, it_shift);
2433
2434 s->console = graphic_console_init(s->ds, s->update, s->invalidate,
2435 s->screen_dump, s->text_update, s);
2436
2437 #ifdef CONFIG_BOCHS_VBE
2438 /* XXX: use optimized standard vga accesses */
2439 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2440 vga_ram_size, vga_ram_offset);
2441 #endif
2442 return 0;
2443 }
2444
2445 int pci_vga_init(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
2446 unsigned long vga_ram_offset, int vga_ram_size,
2447 unsigned long vga_bios_offset, int vga_bios_size)
2448 {
2449 PCIVGAState *d;
2450 VGAState *s;
2451 uint8_t *pci_conf;
2452
2453 d = (PCIVGAState *)pci_register_device(bus, "VGA",
2454 sizeof(PCIVGAState),
2455 -1, NULL, NULL);
2456 if (!d)
2457 return -1;
2458 s = &d->vga_state;
2459
2460 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
2461 vga_init(s);
2462
2463 s->console = graphic_console_init(s->ds, s->update, s->invalidate,
2464 s->screen_dump, s->text_update, s);
2465
2466 s->pci_dev = &d->dev;
2467
2468 pci_conf = d->dev.config;
2469 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
2470 pci_conf[0x01] = 0x12;
2471 pci_conf[0x02] = 0x11;
2472 pci_conf[0x03] = 0x11;
2473 pci_conf[0x0a] = 0x00; // VGA controller
2474 pci_conf[0x0b] = 0x03;
2475 pci_conf[0x0e] = 0x00; // header_type
2476
2477 /* XXX: vga_ram_size must be a power of two */
2478 pci_register_io_region(&d->dev, 0, vga_ram_size,
2479 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2480 if (vga_bios_size != 0) {
2481 unsigned int bios_total_size;
2482 s->bios_offset = vga_bios_offset;
2483 s->bios_size = vga_bios_size;
2484 /* must be a power of two */
2485 bios_total_size = 1;
2486 while (bios_total_size < vga_bios_size)
2487 bios_total_size <<= 1;
2488 pci_register_io_region(&d->dev, PCI_ROM_SLOT, bios_total_size,
2489 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
2490 }
2491 return 0;
2492 }
2493
2494 /********************************************************/
2495 /* vga screen dump */
2496
2497 static int vga_save_w, vga_save_h;
2498
2499 static void vga_save_dpy_update(DisplayState *s,
2500 int x, int y, int w, int h)
2501 {
2502 }
2503
2504 static void vga_save_dpy_resize(DisplayState *s, int w, int h)
2505 {
2506 s->linesize = w * 4;
2507 s->data = qemu_mallocz(h * s->linesize);
2508 vga_save_w = w;
2509 vga_save_h = h;
2510 }
2511
2512 static void vga_save_dpy_refresh(DisplayState *s)
2513 {
2514 }
2515
2516 int ppm_save(const char *filename, uint8_t *data,
2517 int w, int h, int linesize)
2518 {
2519 FILE *f;
2520 uint8_t *d, *d1;
2521 unsigned int v;
2522 int y, x;
2523
2524 f = fopen(filename, "wb");
2525 if (!f)
2526 return -1;
2527 fprintf(f, "P6\n%d %d\n%d\n",
2528 w, h, 255);
2529 d1 = data;
2530 for(y = 0; y < h; y++) {
2531 d = d1;
2532 for(x = 0; x < w; x++) {
2533 v = *(uint32_t *)d;
2534 fputc((v >> 16) & 0xff, f);
2535 fputc((v >> 8) & 0xff, f);
2536 fputc((v) & 0xff, f);
2537 d += 4;
2538 }
2539 d1 += linesize;
2540 }
2541 fclose(f);
2542 return 0;
2543 }
2544
2545 /* save the vga display in a PPM image even if no display is
2546 available */
2547 static void vga_screen_dump(void *opaque, const char *filename)
2548 {
2549 VGAState *s = (VGAState *)opaque;
2550 DisplayState *saved_ds, ds1, *ds = &ds1;
2551
2552 /* XXX: this is a little hackish */
2553 vga_invalidate_display(s);
2554 saved_ds = s->ds;
2555
2556 memset(ds, 0, sizeof(DisplayState));
2557 ds->dpy_update = vga_save_dpy_update;
2558 ds->dpy_resize = vga_save_dpy_resize;
2559 ds->dpy_refresh = vga_save_dpy_refresh;
2560 ds->depth = 32;
2561
2562 s->ds = ds;
2563 s->graphic_mode = -1;
2564 vga_update_display(s);
2565
2566 if (ds_get_data(ds)) {
2567 ppm_save(filename, ds_get_data(ds), vga_save_w, vga_save_h,
2568 ds_get_linesize(s->ds));
2569 qemu_free(ds_get_data(ds));
2570 }
2571 s->ds = saved_ds;
2572 }