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ditto for etraxfs_ser.c
[qemu/aliguori.git] / hw / vga.c
blob33dc478a7d64bfb4b1bb282749925f55239d5859
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 "exec-memory.h"
32
33 //#define DEBUG_VGA
34 //#define DEBUG_VGA_MEM
35 //#define DEBUG_VGA_REG
36
37 //#define DEBUG_BOCHS_VBE
38
39 /* force some bits to zero */
40 const uint8_t sr_mask[8] = {
41 0x03,
42 0x3d,
43 0x0f,
44 0x3f,
45 0x0e,
46 0x00,
47 0x00,
48 0xff,
49 };
50
51 const uint8_t gr_mask[16] = {
52 0x0f, /* 0x00 */
53 0x0f, /* 0x01 */
54 0x0f, /* 0x02 */
55 0x1f, /* 0x03 */
56 0x03, /* 0x04 */
57 0x7b, /* 0x05 */
58 0x0f, /* 0x06 */
59 0x0f, /* 0x07 */
60 0xff, /* 0x08 */
61 0x00, /* 0x09 */
62 0x00, /* 0x0a */
63 0x00, /* 0x0b */
64 0x00, /* 0x0c */
65 0x00, /* 0x0d */
66 0x00, /* 0x0e */
67 0x00, /* 0x0f */
68 };
69
70 #define cbswap_32(__x) \
71 ((uint32_t)( \
72 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
73 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
74 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
75 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
76
77 #ifdef HOST_WORDS_BIGENDIAN
78 #define PAT(x) cbswap_32(x)
79 #else
80 #define PAT(x) (x)
81 #endif
82
83 #ifdef HOST_WORDS_BIGENDIAN
84 #define BIG 1
85 #else
86 #define BIG 0
87 #endif
88
89 #ifdef HOST_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 HOST_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 static char *screen_dump_filename;
154 static DisplayChangeListener *screen_dump_dcl;
155
156 static void vga_dumb_update_retrace_info(VGACommonState *s)
157 {
158 (void) s;
159 }
160
161 static void vga_precise_update_retrace_info(VGACommonState *s)
162 {
163 int htotal_chars;
164 int hretr_start_char;
165 int hretr_skew_chars;
166 int hretr_end_char;
167
168 int vtotal_lines;
169 int vretr_start_line;
170 int vretr_end_line;
171
172 int dots;
173 #if 0
174 int div2, sldiv2;
175 #endif
176 int clocking_mode;
177 int clock_sel;
178 const int clk_hz[] = {25175000, 28322000, 25175000, 25175000};
179 int64_t chars_per_sec;
180 struct vga_precise_retrace *r = &s->retrace_info.precise;
181
182 htotal_chars = s->cr[0x00] + 5;
183 hretr_start_char = s->cr[0x04];
184 hretr_skew_chars = (s->cr[0x05] >> 5) & 3;
185 hretr_end_char = s->cr[0x05] & 0x1f;
186
187 vtotal_lines = (s->cr[0x06]
188 | (((s->cr[0x07] & 1) | ((s->cr[0x07] >> 4) & 2)) << 8)) + 2
189 ;
190 vretr_start_line = s->cr[0x10]
191 | ((((s->cr[0x07] >> 2) & 1) | ((s->cr[0x07] >> 6) & 2)) << 8)
192 ;
193 vretr_end_line = s->cr[0x11] & 0xf;
194
195
196
197 clocking_mode = (s->sr[0x01] >> 3) & 1;
198 clock_sel = (s->msr >> 2) & 3;
199 dots = (s->msr & 1) ? 8 : 9;
200
201 chars_per_sec = clk_hz[clock_sel] / dots;
202
203 htotal_chars <<= clocking_mode;
204
205 r->total_chars = vtotal_lines * htotal_chars;
206 if (r->freq) {
207 r->ticks_per_char = get_ticks_per_sec() / (r->total_chars * r->freq);
208 } else {
209 r->ticks_per_char = get_ticks_per_sec() / chars_per_sec;
210 }
211
212 r->vstart = vretr_start_line;
213 r->vend = r->vstart + vretr_end_line + 1;
214
215 r->hstart = hretr_start_char + hretr_skew_chars;
216 r->hend = r->hstart + hretr_end_char + 1;
217 r->htotal = htotal_chars;
218
219 #if 0
220 div2 = (s->cr[0x17] >> 2) & 1;
221 sldiv2 = (s->cr[0x17] >> 3) & 1;
222 printf (
223 "hz=%f\n"
224 "htotal = %d\n"
225 "hretr_start = %d\n"
226 "hretr_skew = %d\n"
227 "hretr_end = %d\n"
228 "vtotal = %d\n"
229 "vretr_start = %d\n"
230 "vretr_end = %d\n"
231 "div2 = %d sldiv2 = %d\n"
232 "clocking_mode = %d\n"
233 "clock_sel = %d %d\n"
234 "dots = %d\n"
235 "ticks/char = %" PRId64 "\n"
236 "\n",
237 (double) get_ticks_per_sec() / (r->ticks_per_char * r->total_chars),
238 htotal_chars,
239 hretr_start_char,
240 hretr_skew_chars,
241 hretr_end_char,
242 vtotal_lines,
243 vretr_start_line,
244 vretr_end_line,
245 div2, sldiv2,
246 clocking_mode,
247 clock_sel,
248 clk_hz[clock_sel],
249 dots,
250 r->ticks_per_char
251 );
252 #endif
253 }
254
255 static uint8_t vga_precise_retrace(VGACommonState *s)
256 {
257 struct vga_precise_retrace *r = &s->retrace_info.precise;
258 uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE);
259
260 if (r->total_chars) {
261 int cur_line, cur_line_char, cur_char;
262 int64_t cur_tick;
263
264 cur_tick = qemu_get_clock_ns(vm_clock);
265
266 cur_char = (cur_tick / r->ticks_per_char) % r->total_chars;
267 cur_line = cur_char / r->htotal;
268
269 if (cur_line >= r->vstart && cur_line <= r->vend) {
270 val |= ST01_V_RETRACE | ST01_DISP_ENABLE;
271 } else {
272 cur_line_char = cur_char % r->htotal;
273 if (cur_line_char >= r->hstart && cur_line_char <= r->hend) {
274 val |= ST01_DISP_ENABLE;
275 }
276 }
277
278 return val;
279 } else {
280 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
281 }
282 }
283
284 static uint8_t vga_dumb_retrace(VGACommonState *s)
285 {
286 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
287 }
288
289 int vga_ioport_invalid(VGACommonState *s, uint32_t addr)
290 {
291 if (s->msr & MSR_COLOR_EMULATION) {
292 /* Color */
293 return (addr >= 0x3b0 && addr <= 0x3bf);
294 } else {
295 /* Monochrome */
296 return (addr >= 0x3d0 && addr <= 0x3df);
297 }
298 }
299
300 uint32_t vga_ioport_read(void *opaque, uint32_t addr)
301 {
302 VGACommonState *s = opaque;
303 int val, index;
304
305 if (vga_ioport_invalid(s, addr)) {
306 val = 0xff;
307 } else {
308 switch(addr) {
309 case 0x3c0:
310 if (s->ar_flip_flop == 0) {
311 val = s->ar_index;
312 } else {
313 val = 0;
314 }
315 break;
316 case 0x3c1:
317 index = s->ar_index & 0x1f;
318 if (index < 21)
319 val = s->ar[index];
320 else
321 val = 0;
322 break;
323 case 0x3c2:
324 val = s->st00;
325 break;
326 case 0x3c4:
327 val = s->sr_index;
328 break;
329 case 0x3c5:
330 val = s->sr[s->sr_index];
331 #ifdef DEBUG_VGA_REG
332 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
333 #endif
334 break;
335 case 0x3c7:
336 val = s->dac_state;
337 break;
338 case 0x3c8:
339 val = s->dac_write_index;
340 break;
341 case 0x3c9:
342 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
343 if (++s->dac_sub_index == 3) {
344 s->dac_sub_index = 0;
345 s->dac_read_index++;
346 }
347 break;
348 case 0x3ca:
349 val = s->fcr;
350 break;
351 case 0x3cc:
352 val = s->msr;
353 break;
354 case 0x3ce:
355 val = s->gr_index;
356 break;
357 case 0x3cf:
358 val = s->gr[s->gr_index];
359 #ifdef DEBUG_VGA_REG
360 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
361 #endif
362 break;
363 case 0x3b4:
364 case 0x3d4:
365 val = s->cr_index;
366 break;
367 case 0x3b5:
368 case 0x3d5:
369 val = s->cr[s->cr_index];
370 #ifdef DEBUG_VGA_REG
371 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
372 #endif
373 break;
374 case 0x3ba:
375 case 0x3da:
376 /* just toggle to fool polling */
377 val = s->st01 = s->retrace(s);
378 s->ar_flip_flop = 0;
379 break;
380 default:
381 val = 0x00;
382 break;
383 }
384 }
385 #if defined(DEBUG_VGA)
386 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
387 #endif
388 return val;
389 }
390
391 void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
392 {
393 VGACommonState *s = opaque;
394 int index;
395
396 /* check port range access depending on color/monochrome mode */
397 if (vga_ioport_invalid(s, addr)) {
398 return;
399 }
400 #ifdef DEBUG_VGA
401 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
402 #endif
403
404 switch(addr) {
405 case 0x3c0:
406 if (s->ar_flip_flop == 0) {
407 val &= 0x3f;
408 s->ar_index = val;
409 } else {
410 index = s->ar_index & 0x1f;
411 switch(index) {
412 case 0x00 ... 0x0f:
413 s->ar[index] = val & 0x3f;
414 break;
415 case 0x10:
416 s->ar[index] = val & ~0x10;
417 break;
418 case 0x11:
419 s->ar[index] = val;
420 break;
421 case 0x12:
422 s->ar[index] = val & ~0xc0;
423 break;
424 case 0x13:
425 s->ar[index] = val & ~0xf0;
426 break;
427 case 0x14:
428 s->ar[index] = val & ~0xf0;
429 break;
430 default:
431 break;
432 }
433 }
434 s->ar_flip_flop ^= 1;
435 break;
436 case 0x3c2:
437 s->msr = val & ~0x10;
438 s->update_retrace_info(s);
439 break;
440 case 0x3c4:
441 s->sr_index = val & 7;
442 break;
443 case 0x3c5:
444 #ifdef DEBUG_VGA_REG
445 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
446 #endif
447 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
448 if (s->sr_index == 1) s->update_retrace_info(s);
449 break;
450 case 0x3c7:
451 s->dac_read_index = val;
452 s->dac_sub_index = 0;
453 s->dac_state = 3;
454 break;
455 case 0x3c8:
456 s->dac_write_index = val;
457 s->dac_sub_index = 0;
458 s->dac_state = 0;
459 break;
460 case 0x3c9:
461 s->dac_cache[s->dac_sub_index] = val;
462 if (++s->dac_sub_index == 3) {
463 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
464 s->dac_sub_index = 0;
465 s->dac_write_index++;
466 }
467 break;
468 case 0x3ce:
469 s->gr_index = val & 0x0f;
470 break;
471 case 0x3cf:
472 #ifdef DEBUG_VGA_REG
473 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
474 #endif
475 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
476 break;
477 case 0x3b4:
478 case 0x3d4:
479 s->cr_index = val;
480 break;
481 case 0x3b5:
482 case 0x3d5:
483 #ifdef DEBUG_VGA_REG
484 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
485 #endif
486 /* handle CR0-7 protection */
487 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
488 /* can always write bit 4 of CR7 */
489 if (s->cr_index == 7)
490 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
491 return;
492 }
493 s->cr[s->cr_index] = val;
494
495 switch(s->cr_index) {
496 case 0x00:
497 case 0x04:
498 case 0x05:
499 case 0x06:
500 case 0x07:
501 case 0x11:
502 case 0x17:
503 s->update_retrace_info(s);
504 break;
505 }
506 break;
507 case 0x3ba:
508 case 0x3da:
509 s->fcr = val & 0x10;
510 break;
511 }
512 }
513
514 #ifdef CONFIG_BOCHS_VBE
515 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
516 {
517 VGACommonState *s = opaque;
518 uint32_t val;
519 val = s->vbe_index;
520 return val;
521 }
522
523 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
524 {
525 VGACommonState *s = opaque;
526 uint32_t val;
527
528 if (s->vbe_index < VBE_DISPI_INDEX_NB) {
529 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
530 switch(s->vbe_index) {
531 /* XXX: do not hardcode ? */
532 case VBE_DISPI_INDEX_XRES:
533 val = VBE_DISPI_MAX_XRES;
534 break;
535 case VBE_DISPI_INDEX_YRES:
536 val = VBE_DISPI_MAX_YRES;
537 break;
538 case VBE_DISPI_INDEX_BPP:
539 val = VBE_DISPI_MAX_BPP;
540 break;
541 default:
542 val = s->vbe_regs[s->vbe_index];
543 break;
544 }
545 } else {
546 val = s->vbe_regs[s->vbe_index];
547 }
548 } else if (s->vbe_index == VBE_DISPI_INDEX_VIDEO_MEMORY_64K) {
549 val = s->vram_size / (64 * 1024);
550 } else {
551 val = 0;
552 }
553 #ifdef DEBUG_BOCHS_VBE
554 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
555 #endif
556 return val;
557 }
558
559 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
560 {
561 VGACommonState *s = opaque;
562 s->vbe_index = val;
563 }
564
565 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
566 {
567 VGACommonState *s = opaque;
568
569 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
570 #ifdef DEBUG_BOCHS_VBE
571 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
572 #endif
573 switch(s->vbe_index) {
574 case VBE_DISPI_INDEX_ID:
575 if (val == VBE_DISPI_ID0 ||
576 val == VBE_DISPI_ID1 ||
577 val == VBE_DISPI_ID2 ||
578 val == VBE_DISPI_ID3 ||
579 val == VBE_DISPI_ID4) {
580 s->vbe_regs[s->vbe_index] = val;
581 }
582 break;
583 case VBE_DISPI_INDEX_XRES:
584 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
585 s->vbe_regs[s->vbe_index] = val;
586 }
587 break;
588 case VBE_DISPI_INDEX_YRES:
589 if (val <= VBE_DISPI_MAX_YRES) {
590 s->vbe_regs[s->vbe_index] = val;
591 }
592 break;
593 case VBE_DISPI_INDEX_BPP:
594 if (val == 0)
595 val = 8;
596 if (val == 4 || val == 8 || val == 15 ||
597 val == 16 || val == 24 || val == 32) {
598 s->vbe_regs[s->vbe_index] = val;
599 }
600 break;
601 case VBE_DISPI_INDEX_BANK:
602 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
603 val &= (s->vbe_bank_mask >> 2);
604 } else {
605 val &= s->vbe_bank_mask;
606 }
607 s->vbe_regs[s->vbe_index] = val;
608 s->bank_offset = (val << 16);
609 break;
610 case VBE_DISPI_INDEX_ENABLE:
611 if ((val & VBE_DISPI_ENABLED) &&
612 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
613 int h, shift_control;
614
615 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
616 s->vbe_regs[VBE_DISPI_INDEX_XRES];
617 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
618 s->vbe_regs[VBE_DISPI_INDEX_YRES];
619 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
620 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
621
622 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
623 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
624 else
625 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
626 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
627 s->vbe_start_addr = 0;
628
629 /* clear the screen (should be done in BIOS) */
630 if (!(val & VBE_DISPI_NOCLEARMEM)) {
631 memset(s->vram_ptr, 0,
632 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
633 }
634
635 /* we initialize the VGA graphic mode (should be done
636 in BIOS) */
637 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
638 s->cr[0x17] |= 3; /* no CGA modes */
639 s->cr[0x13] = s->vbe_line_offset >> 3;
640 /* width */
641 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
642 /* height (only meaningful if < 1024) */
643 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
644 s->cr[0x12] = h;
645 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
646 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
647 /* line compare to 1023 */
648 s->cr[0x18] = 0xff;
649 s->cr[0x07] |= 0x10;
650 s->cr[0x09] |= 0x40;
651
652 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
653 shift_control = 0;
654 s->sr[0x01] &= ~8; /* no double line */
655 } else {
656 shift_control = 2;
657 s->sr[4] |= 0x08; /* set chain 4 mode */
658 s->sr[2] |= 0x0f; /* activate all planes */
659 }
660 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
661 s->cr[0x09] &= ~0x9f; /* no double scan */
662 } else {
663 /* XXX: the bios should do that */
664 s->bank_offset = 0;
665 }
666 s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
667 s->vbe_regs[s->vbe_index] = val;
668 break;
669 case VBE_DISPI_INDEX_VIRT_WIDTH:
670 {
671 int w, h, line_offset;
672
673 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
674 return;
675 w = val;
676 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
677 line_offset = w >> 1;
678 else
679 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
680 h = s->vram_size / line_offset;
681 /* XXX: support weird bochs semantics ? */
682 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
683 return;
684 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
685 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
686 s->vbe_line_offset = line_offset;
687 }
688 break;
689 case VBE_DISPI_INDEX_X_OFFSET:
690 case VBE_DISPI_INDEX_Y_OFFSET:
691 {
692 int x;
693 s->vbe_regs[s->vbe_index] = val;
694 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
695 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
696 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
697 s->vbe_start_addr += x >> 1;
698 else
699 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
700 s->vbe_start_addr >>= 2;
701 }
702 break;
703 default:
704 break;
705 }
706 }
707 }
708 #endif
709
710 /* called for accesses between 0xa0000 and 0xc0000 */
711 uint32_t vga_mem_readb(VGACommonState *s, target_phys_addr_t addr)
712 {
713 int memory_map_mode, plane;
714 uint32_t ret;
715
716 /* convert to VGA memory offset */
717 memory_map_mode = (s->gr[6] >> 2) & 3;
718 addr &= 0x1ffff;
719 switch(memory_map_mode) {
720 case 0:
721 break;
722 case 1:
723 if (addr >= 0x10000)
724 return 0xff;
725 addr += s->bank_offset;
726 break;
727 case 2:
728 addr -= 0x10000;
729 if (addr >= 0x8000)
730 return 0xff;
731 break;
732 default:
733 case 3:
734 addr -= 0x18000;
735 if (addr >= 0x8000)
736 return 0xff;
737 break;
738 }
739
740 if (s->sr[4] & 0x08) {
741 /* chain 4 mode : simplest access */
742 ret = s->vram_ptr[addr];
743 } else if (s->gr[5] & 0x10) {
744 /* odd/even mode (aka text mode mapping) */
745 plane = (s->gr[4] & 2) | (addr & 1);
746 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
747 } else {
748 /* standard VGA latched access */
749 s->latch = ((uint32_t *)s->vram_ptr)[addr];
750
751 if (!(s->gr[5] & 0x08)) {
752 /* read mode 0 */
753 plane = s->gr[4];
754 ret = GET_PLANE(s->latch, plane);
755 } else {
756 /* read mode 1 */
757 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
758 ret |= ret >> 16;
759 ret |= ret >> 8;
760 ret = (~ret) & 0xff;
761 }
762 }
763 return ret;
764 }
765
766 /* called for accesses between 0xa0000 and 0xc0000 */
767 void vga_mem_writeb(VGACommonState *s, target_phys_addr_t addr, uint32_t val)
768 {
769 int memory_map_mode, plane, write_mode, b, func_select, mask;
770 uint32_t write_mask, bit_mask, set_mask;
771
772 #ifdef DEBUG_VGA_MEM
773 printf("vga: [0x" TARGET_FMT_plx "] = 0x%02x\n", addr, val);
774 #endif
775 /* convert to VGA memory offset */
776 memory_map_mode = (s->gr[6] >> 2) & 3;
777 addr &= 0x1ffff;
778 switch(memory_map_mode) {
779 case 0:
780 break;
781 case 1:
782 if (addr >= 0x10000)
783 return;
784 addr += s->bank_offset;
785 break;
786 case 2:
787 addr -= 0x10000;
788 if (addr >= 0x8000)
789 return;
790 break;
791 default:
792 case 3:
793 addr -= 0x18000;
794 if (addr >= 0x8000)
795 return;
796 break;
797 }
798
799 if (s->sr[4] & 0x08) {
800 /* chain 4 mode : simplest access */
801 plane = addr & 3;
802 mask = (1 << plane);
803 if (s->sr[2] & mask) {
804 s->vram_ptr[addr] = val;
805 #ifdef DEBUG_VGA_MEM
806 printf("vga: chain4: [0x" TARGET_FMT_plx "]\n", addr);
807 #endif
808 s->plane_updated |= mask; /* only used to detect font change */
809 memory_region_set_dirty(&s->vram, addr);
810 }
811 } else if (s->gr[5] & 0x10) {
812 /* odd/even mode (aka text mode mapping) */
813 plane = (s->gr[4] & 2) | (addr & 1);
814 mask = (1 << plane);
815 if (s->sr[2] & mask) {
816 addr = ((addr & ~1) << 1) | plane;
817 s->vram_ptr[addr] = val;
818 #ifdef DEBUG_VGA_MEM
819 printf("vga: odd/even: [0x" TARGET_FMT_plx "]\n", addr);
820 #endif
821 s->plane_updated |= mask; /* only used to detect font change */
822 memory_region_set_dirty(&s->vram, addr);
823 }
824 } else {
825 /* standard VGA latched access */
826 write_mode = s->gr[5] & 3;
827 switch(write_mode) {
828 default:
829 case 0:
830 /* rotate */
831 b = s->gr[3] & 7;
832 val = ((val >> b) | (val << (8 - b))) & 0xff;
833 val |= val << 8;
834 val |= val << 16;
835
836 /* apply set/reset mask */
837 set_mask = mask16[s->gr[1]];
838 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
839 bit_mask = s->gr[8];
840 break;
841 case 1:
842 val = s->latch;
843 goto do_write;
844 case 2:
845 val = mask16[val & 0x0f];
846 bit_mask = s->gr[8];
847 break;
848 case 3:
849 /* rotate */
850 b = s->gr[3] & 7;
851 val = (val >> b) | (val << (8 - b));
852
853 bit_mask = s->gr[8] & val;
854 val = mask16[s->gr[0]];
855 break;
856 }
857
858 /* apply logical operation */
859 func_select = s->gr[3] >> 3;
860 switch(func_select) {
861 case 0:
862 default:
863 /* nothing to do */
864 break;
865 case 1:
866 /* and */
867 val &= s->latch;
868 break;
869 case 2:
870 /* or */
871 val |= s->latch;
872 break;
873 case 3:
874 /* xor */
875 val ^= s->latch;
876 break;
877 }
878
879 /* apply bit mask */
880 bit_mask |= bit_mask << 8;
881 bit_mask |= bit_mask << 16;
882 val = (val & bit_mask) | (s->latch & ~bit_mask);
883
884 do_write:
885 /* mask data according to sr[2] */
886 mask = s->sr[2];
887 s->plane_updated |= mask; /* only used to detect font change */
888 write_mask = mask16[mask];
889 ((uint32_t *)s->vram_ptr)[addr] =
890 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
891 (val & write_mask);
892 #ifdef DEBUG_VGA_MEM
893 printf("vga: latch: [0x" TARGET_FMT_plx "] mask=0x%08x val=0x%08x\n",
894 addr * 4, write_mask, val);
895 #endif
896 memory_region_set_dirty(&s->vram, addr << 2);
897 }
898 }
899
900 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
901 const uint8_t *font_ptr, int h,
902 uint32_t fgcol, uint32_t bgcol);
903 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
904 const uint8_t *font_ptr, int h,
905 uint32_t fgcol, uint32_t bgcol, int dup9);
906 typedef void vga_draw_line_func(VGACommonState *s1, uint8_t *d,
907 const uint8_t *s, int width);
908
909 #define DEPTH 8
910 #include "vga_template.h"
911
912 #define DEPTH 15
913 #include "vga_template.h"
914
915 #define BGR_FORMAT
916 #define DEPTH 15
917 #include "vga_template.h"
918
919 #define DEPTH 16
920 #include "vga_template.h"
921
922 #define BGR_FORMAT
923 #define DEPTH 16
924 #include "vga_template.h"
925
926 #define DEPTH 32
927 #include "vga_template.h"
928
929 #define BGR_FORMAT
930 #define DEPTH 32
931 #include "vga_template.h"
932
933 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
934 {
935 unsigned int col;
936 col = rgb_to_pixel8(r, g, b);
937 col |= col << 8;
938 col |= col << 16;
939 return col;
940 }
941
942 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
943 {
944 unsigned int col;
945 col = rgb_to_pixel15(r, g, b);
946 col |= col << 16;
947 return col;
948 }
949
950 static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g,
951 unsigned int b)
952 {
953 unsigned int col;
954 col = rgb_to_pixel15bgr(r, g, b);
955 col |= col << 16;
956 return col;
957 }
958
959 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
960 {
961 unsigned int col;
962 col = rgb_to_pixel16(r, g, b);
963 col |= col << 16;
964 return col;
965 }
966
967 static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g,
968 unsigned int b)
969 {
970 unsigned int col;
971 col = rgb_to_pixel16bgr(r, g, b);
972 col |= col << 16;
973 return col;
974 }
975
976 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
977 {
978 unsigned int col;
979 col = rgb_to_pixel32(r, g, b);
980 return col;
981 }
982
983 static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
984 {
985 unsigned int col;
986 col = rgb_to_pixel32bgr(r, g, b);
987 return col;
988 }
989
990 /* return true if the palette was modified */
991 static int update_palette16(VGACommonState *s)
992 {
993 int full_update, i;
994 uint32_t v, col, *palette;
995
996 full_update = 0;
997 palette = s->last_palette;
998 for(i = 0; i < 16; i++) {
999 v = s->ar[i];
1000 if (s->ar[0x10] & 0x80)
1001 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
1002 else
1003 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
1004 v = v * 3;
1005 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1006 c6_to_8(s->palette[v + 1]),
1007 c6_to_8(s->palette[v + 2]));
1008 if (col != palette[i]) {
1009 full_update = 1;
1010 palette[i] = col;
1011 }
1012 }
1013 return full_update;
1014 }
1015
1016 /* return true if the palette was modified */
1017 static int update_palette256(VGACommonState *s)
1018 {
1019 int full_update, i;
1020 uint32_t v, col, *palette;
1021
1022 full_update = 0;
1023 palette = s->last_palette;
1024 v = 0;
1025 for(i = 0; i < 256; i++) {
1026 if (s->dac_8bit) {
1027 col = s->rgb_to_pixel(s->palette[v],
1028 s->palette[v + 1],
1029 s->palette[v + 2]);
1030 } else {
1031 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
1032 c6_to_8(s->palette[v + 1]),
1033 c6_to_8(s->palette[v + 2]));
1034 }
1035 if (col != palette[i]) {
1036 full_update = 1;
1037 palette[i] = col;
1038 }
1039 v += 3;
1040 }
1041 return full_update;
1042 }
1043
1044 static void vga_get_offsets(VGACommonState *s,
1045 uint32_t *pline_offset,
1046 uint32_t *pstart_addr,
1047 uint32_t *pline_compare)
1048 {
1049 uint32_t start_addr, line_offset, line_compare;
1050 #ifdef CONFIG_BOCHS_VBE
1051 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1052 line_offset = s->vbe_line_offset;
1053 start_addr = s->vbe_start_addr;
1054 line_compare = 65535;
1055 } else
1056 #endif
1057 {
1058 /* compute line_offset in bytes */
1059 line_offset = s->cr[0x13];
1060 line_offset <<= 3;
1061
1062 /* starting address */
1063 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
1064
1065 /* line compare */
1066 line_compare = s->cr[0x18] |
1067 ((s->cr[0x07] & 0x10) << 4) |
1068 ((s->cr[0x09] & 0x40) << 3);
1069 }
1070 *pline_offset = line_offset;
1071 *pstart_addr = start_addr;
1072 *pline_compare = line_compare;
1073 }
1074
1075 /* update start_addr and line_offset. Return TRUE if modified */
1076 static int update_basic_params(VGACommonState *s)
1077 {
1078 int full_update;
1079 uint32_t start_addr, line_offset, line_compare;
1080
1081 full_update = 0;
1082
1083 s->get_offsets(s, &line_offset, &start_addr, &line_compare);
1084
1085 if (line_offset != s->line_offset ||
1086 start_addr != s->start_addr ||
1087 line_compare != s->line_compare) {
1088 s->line_offset = line_offset;
1089 s->start_addr = start_addr;
1090 s->line_compare = line_compare;
1091 full_update = 1;
1092 }
1093 return full_update;
1094 }
1095
1096 #define NB_DEPTHS 7
1097
1098 static inline int get_depth_index(DisplayState *s)
1099 {
1100 switch(ds_get_bits_per_pixel(s)) {
1101 default:
1102 case 8:
1103 return 0;
1104 case 15:
1105 return 1;
1106 case 16:
1107 return 2;
1108 case 32:
1109 if (is_surface_bgr(s->surface))
1110 return 4;
1111 else
1112 return 3;
1113 }
1114 }
1115
1116 static vga_draw_glyph8_func * const vga_draw_glyph8_table[NB_DEPTHS] = {
1117 vga_draw_glyph8_8,
1118 vga_draw_glyph8_16,
1119 vga_draw_glyph8_16,
1120 vga_draw_glyph8_32,
1121 vga_draw_glyph8_32,
1122 vga_draw_glyph8_16,
1123 vga_draw_glyph8_16,
1124 };
1125
1126 static vga_draw_glyph8_func * const vga_draw_glyph16_table[NB_DEPTHS] = {
1127 vga_draw_glyph16_8,
1128 vga_draw_glyph16_16,
1129 vga_draw_glyph16_16,
1130 vga_draw_glyph16_32,
1131 vga_draw_glyph16_32,
1132 vga_draw_glyph16_16,
1133 vga_draw_glyph16_16,
1134 };
1135
1136 static vga_draw_glyph9_func * const vga_draw_glyph9_table[NB_DEPTHS] = {
1137 vga_draw_glyph9_8,
1138 vga_draw_glyph9_16,
1139 vga_draw_glyph9_16,
1140 vga_draw_glyph9_32,
1141 vga_draw_glyph9_32,
1142 vga_draw_glyph9_16,
1143 vga_draw_glyph9_16,
1144 };
1145
1146 static const uint8_t cursor_glyph[32 * 4] = {
1147 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1148 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1149 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1150 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1151 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1152 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1153 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1154 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1155 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1156 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1157 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1158 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1159 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1160 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1161 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1162 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1163 };
1164
1165 static void vga_get_text_resolution(VGACommonState *s, int *pwidth, int *pheight,
1166 int *pcwidth, int *pcheight)
1167 {
1168 int width, cwidth, height, cheight;
1169
1170 /* total width & height */
1171 cheight = (s->cr[9] & 0x1f) + 1;
1172 cwidth = 8;
1173 if (!(s->sr[1] & 0x01))
1174 cwidth = 9;
1175 if (s->sr[1] & 0x08)
1176 cwidth = 16; /* NOTE: no 18 pixel wide */
1177 width = (s->cr[0x01] + 1);
1178 if (s->cr[0x06] == 100) {
1179 /* ugly hack for CGA 160x100x16 - explain me the logic */
1180 height = 100;
1181 } else {
1182 height = s->cr[0x12] |
1183 ((s->cr[0x07] & 0x02) << 7) |
1184 ((s->cr[0x07] & 0x40) << 3);
1185 height = (height + 1) / cheight;
1186 }
1187
1188 *pwidth = width;
1189 *pheight = height;
1190 *pcwidth = cwidth;
1191 *pcheight = cheight;
1192 }
1193
1194 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1195
1196 static rgb_to_pixel_dup_func * const rgb_to_pixel_dup_table[NB_DEPTHS] = {
1197 rgb_to_pixel8_dup,
1198 rgb_to_pixel15_dup,
1199 rgb_to_pixel16_dup,
1200 rgb_to_pixel32_dup,
1201 rgb_to_pixel32bgr_dup,
1202 rgb_to_pixel15bgr_dup,
1203 rgb_to_pixel16bgr_dup,
1204 };
1205
1206 /*
1207 * Text mode update
1208 * Missing:
1209 * - double scan
1210 * - double width
1211 * - underline
1212 * - flashing
1213 */
1214 static void vga_draw_text(VGACommonState *s, int full_update)
1215 {
1216 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1217 int cx_min, cx_max, linesize, x_incr, line, line1;
1218 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1219 uint8_t *d1, *d, *src, *dest, *cursor_ptr;
1220 const uint8_t *font_ptr, *font_base[2];
1221 int dup9, line_offset, depth_index;
1222 uint32_t *palette;
1223 uint32_t *ch_attr_ptr;
1224 vga_draw_glyph8_func *vga_draw_glyph8;
1225 vga_draw_glyph9_func *vga_draw_glyph9;
1226
1227 /* compute font data address (in plane 2) */
1228 v = s->sr[3];
1229 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1230 if (offset != s->font_offsets[0]) {
1231 s->font_offsets[0] = offset;
1232 full_update = 1;
1233 }
1234 font_base[0] = s->vram_ptr + offset;
1235
1236 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1237 font_base[1] = s->vram_ptr + offset;
1238 if (offset != s->font_offsets[1]) {
1239 s->font_offsets[1] = offset;
1240 full_update = 1;
1241 }
1242 if (s->plane_updated & (1 << 2)) {
1243 /* if the plane 2 was modified since the last display, it
1244 indicates the font may have been modified */
1245 s->plane_updated = 0;
1246 full_update = 1;
1247 }
1248 full_update |= update_basic_params(s);
1249
1250 line_offset = s->line_offset;
1251
1252 vga_get_text_resolution(s, &width, &height, &cw, &cheight);
1253 if ((height * width) > CH_ATTR_SIZE) {
1254 /* better than nothing: exit if transient size is too big */
1255 return;
1256 }
1257
1258 if (width != s->last_width || height != s->last_height ||
1259 cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
1260 s->last_scr_width = width * cw;
1261 s->last_scr_height = height * cheight;
1262 qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height);
1263 s->last_depth = 0;
1264 s->last_width = width;
1265 s->last_height = height;
1266 s->last_ch = cheight;
1267 s->last_cw = cw;
1268 full_update = 1;
1269 }
1270 s->rgb_to_pixel =
1271 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1272 full_update |= update_palette16(s);
1273 palette = s->last_palette;
1274 x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1275
1276 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1277 if (cursor_offset != s->cursor_offset ||
1278 s->cr[0xa] != s->cursor_start ||
1279 s->cr[0xb] != s->cursor_end) {
1280 /* if the cursor position changed, we update the old and new
1281 chars */
1282 if (s->cursor_offset < CH_ATTR_SIZE)
1283 s->last_ch_attr[s->cursor_offset] = -1;
1284 if (cursor_offset < CH_ATTR_SIZE)
1285 s->last_ch_attr[cursor_offset] = -1;
1286 s->cursor_offset = cursor_offset;
1287 s->cursor_start = s->cr[0xa];
1288 s->cursor_end = s->cr[0xb];
1289 }
1290 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1291
1292 depth_index = get_depth_index(s->ds);
1293 if (cw == 16)
1294 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1295 else
1296 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1297 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1298
1299 dest = ds_get_data(s->ds);
1300 linesize = ds_get_linesize(s->ds);
1301 ch_attr_ptr = s->last_ch_attr;
1302 line = 0;
1303 offset = s->start_addr * 4;
1304 for(cy = 0; cy < height; cy++) {
1305 d1 = dest;
1306 src = s->vram_ptr + offset;
1307 cx_min = width;
1308 cx_max = -1;
1309 for(cx = 0; cx < width; cx++) {
1310 ch_attr = *(uint16_t *)src;
1311 if (full_update || ch_attr != *ch_attr_ptr) {
1312 if (cx < cx_min)
1313 cx_min = cx;
1314 if (cx > cx_max)
1315 cx_max = cx;
1316 *ch_attr_ptr = ch_attr;
1317 #ifdef HOST_WORDS_BIGENDIAN
1318 ch = ch_attr >> 8;
1319 cattr = ch_attr & 0xff;
1320 #else
1321 ch = ch_attr & 0xff;
1322 cattr = ch_attr >> 8;
1323 #endif
1324 font_ptr = font_base[(cattr >> 3) & 1];
1325 font_ptr += 32 * 4 * ch;
1326 bgcol = palette[cattr >> 4];
1327 fgcol = palette[cattr & 0x0f];
1328 if (cw != 9) {
1329 vga_draw_glyph8(d1, linesize,
1330 font_ptr, cheight, fgcol, bgcol);
1331 } else {
1332 dup9 = 0;
1333 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1334 dup9 = 1;
1335 vga_draw_glyph9(d1, linesize,
1336 font_ptr, cheight, fgcol, bgcol, dup9);
1337 }
1338 if (src == cursor_ptr &&
1339 !(s->cr[0x0a] & 0x20)) {
1340 int line_start, line_last, h;
1341 /* draw the cursor */
1342 line_start = s->cr[0x0a] & 0x1f;
1343 line_last = s->cr[0x0b] & 0x1f;
1344 /* XXX: check that */
1345 if (line_last > cheight - 1)
1346 line_last = cheight - 1;
1347 if (line_last >= line_start && line_start < cheight) {
1348 h = line_last - line_start + 1;
1349 d = d1 + linesize * line_start;
1350 if (cw != 9) {
1351 vga_draw_glyph8(d, linesize,
1352 cursor_glyph, h, fgcol, bgcol);
1353 } else {
1354 vga_draw_glyph9(d, linesize,
1355 cursor_glyph, h, fgcol, bgcol, 1);
1356 }
1357 }
1358 }
1359 }
1360 d1 += x_incr;
1361 src += 4;
1362 ch_attr_ptr++;
1363 }
1364 if (cx_max != -1) {
1365 dpy_update(s->ds, cx_min * cw, cy * cheight,
1366 (cx_max - cx_min + 1) * cw, cheight);
1367 }
1368 dest += linesize * cheight;
1369 line1 = line + cheight;
1370 offset += line_offset;
1371 if (line < s->line_compare && line1 >= s->line_compare) {
1372 offset = 0;
1373 }
1374 line = line1;
1375 }
1376 }
1377
1378 enum {
1379 VGA_DRAW_LINE2,
1380 VGA_DRAW_LINE2D2,
1381 VGA_DRAW_LINE4,
1382 VGA_DRAW_LINE4D2,
1383 VGA_DRAW_LINE8D2,
1384 VGA_DRAW_LINE8,
1385 VGA_DRAW_LINE15,
1386 VGA_DRAW_LINE16,
1387 VGA_DRAW_LINE24,
1388 VGA_DRAW_LINE32,
1389 VGA_DRAW_LINE_NB,
1390 };
1391
1392 static vga_draw_line_func * const vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1393 vga_draw_line2_8,
1394 vga_draw_line2_16,
1395 vga_draw_line2_16,
1396 vga_draw_line2_32,
1397 vga_draw_line2_32,
1398 vga_draw_line2_16,
1399 vga_draw_line2_16,
1400
1401 vga_draw_line2d2_8,
1402 vga_draw_line2d2_16,
1403 vga_draw_line2d2_16,
1404 vga_draw_line2d2_32,
1405 vga_draw_line2d2_32,
1406 vga_draw_line2d2_16,
1407 vga_draw_line2d2_16,
1408
1409 vga_draw_line4_8,
1410 vga_draw_line4_16,
1411 vga_draw_line4_16,
1412 vga_draw_line4_32,
1413 vga_draw_line4_32,
1414 vga_draw_line4_16,
1415 vga_draw_line4_16,
1416
1417 vga_draw_line4d2_8,
1418 vga_draw_line4d2_16,
1419 vga_draw_line4d2_16,
1420 vga_draw_line4d2_32,
1421 vga_draw_line4d2_32,
1422 vga_draw_line4d2_16,
1423 vga_draw_line4d2_16,
1424
1425 vga_draw_line8d2_8,
1426 vga_draw_line8d2_16,
1427 vga_draw_line8d2_16,
1428 vga_draw_line8d2_32,
1429 vga_draw_line8d2_32,
1430 vga_draw_line8d2_16,
1431 vga_draw_line8d2_16,
1432
1433 vga_draw_line8_8,
1434 vga_draw_line8_16,
1435 vga_draw_line8_16,
1436 vga_draw_line8_32,
1437 vga_draw_line8_32,
1438 vga_draw_line8_16,
1439 vga_draw_line8_16,
1440
1441 vga_draw_line15_8,
1442 vga_draw_line15_15,
1443 vga_draw_line15_16,
1444 vga_draw_line15_32,
1445 vga_draw_line15_32bgr,
1446 vga_draw_line15_15bgr,
1447 vga_draw_line15_16bgr,
1448
1449 vga_draw_line16_8,
1450 vga_draw_line16_15,
1451 vga_draw_line16_16,
1452 vga_draw_line16_32,
1453 vga_draw_line16_32bgr,
1454 vga_draw_line16_15bgr,
1455 vga_draw_line16_16bgr,
1456
1457 vga_draw_line24_8,
1458 vga_draw_line24_15,
1459 vga_draw_line24_16,
1460 vga_draw_line24_32,
1461 vga_draw_line24_32bgr,
1462 vga_draw_line24_15bgr,
1463 vga_draw_line24_16bgr,
1464
1465 vga_draw_line32_8,
1466 vga_draw_line32_15,
1467 vga_draw_line32_16,
1468 vga_draw_line32_32,
1469 vga_draw_line32_32bgr,
1470 vga_draw_line32_15bgr,
1471 vga_draw_line32_16bgr,
1472 };
1473
1474 static int vga_get_bpp(VGACommonState *s)
1475 {
1476 int ret;
1477 #ifdef CONFIG_BOCHS_VBE
1478 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1479 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1480 } else
1481 #endif
1482 {
1483 ret = 0;
1484 }
1485 return ret;
1486 }
1487
1488 static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
1489 {
1490 int width, height;
1491
1492 #ifdef CONFIG_BOCHS_VBE
1493 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1494 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1495 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1496 } else
1497 #endif
1498 {
1499 width = (s->cr[0x01] + 1) * 8;
1500 height = s->cr[0x12] |
1501 ((s->cr[0x07] & 0x02) << 7) |
1502 ((s->cr[0x07] & 0x40) << 3);
1503 height = (height + 1);
1504 }
1505 *pwidth = width;
1506 *pheight = height;
1507 }
1508
1509 void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2)
1510 {
1511 int y;
1512 if (y1 >= VGA_MAX_HEIGHT)
1513 return;
1514 if (y2 >= VGA_MAX_HEIGHT)
1515 y2 = VGA_MAX_HEIGHT;
1516 for(y = y1; y < y2; y++) {
1517 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1518 }
1519 }
1520
1521 static void vga_sync_dirty_bitmap(VGACommonState *s)
1522 {
1523 memory_region_sync_dirty_bitmap(&s->vram);
1524 }
1525
1526 void vga_dirty_log_start(VGACommonState *s)
1527 {
1528 memory_region_set_log(&s->vram, true, DIRTY_MEMORY_VGA);
1529 }
1530
1531 void vga_dirty_log_stop(VGACommonState *s)
1532 {
1533 memory_region_set_log(&s->vram, false, DIRTY_MEMORY_VGA);
1534 }
1535
1536 void vga_dirty_log_restart(VGACommonState *s)
1537 {
1538 vga_dirty_log_stop(s);
1539 vga_dirty_log_start(s);
1540 }
1541
1542 /*
1543 * graphic modes
1544 */
1545 static void vga_draw_graphic(VGACommonState *s, int full_update)
1546 {
1547 int y1, y, update, linesize, y_start, double_scan, mask, depth;
1548 int width, height, shift_control, line_offset, bwidth, bits;
1549 ram_addr_t page0, page1, page_min, page_max;
1550 int disp_width, multi_scan, multi_run;
1551 uint8_t *d;
1552 uint32_t v, addr1, addr;
1553 vga_draw_line_func *vga_draw_line;
1554
1555 full_update |= update_basic_params(s);
1556
1557 if (!full_update)
1558 vga_sync_dirty_bitmap(s);
1559
1560 s->get_resolution(s, &width, &height);
1561 disp_width = width;
1562
1563 shift_control = (s->gr[0x05] >> 5) & 3;
1564 double_scan = (s->cr[0x09] >> 7);
1565 if (shift_control != 1) {
1566 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1567 } else {
1568 /* in CGA modes, multi_scan is ignored */
1569 /* XXX: is it correct ? */
1570 multi_scan = double_scan;
1571 }
1572 multi_run = multi_scan;
1573 if (shift_control != s->shift_control ||
1574 double_scan != s->double_scan) {
1575 full_update = 1;
1576 s->shift_control = shift_control;
1577 s->double_scan = double_scan;
1578 }
1579
1580 if (shift_control == 0) {
1581 if (s->sr[0x01] & 8) {
1582 disp_width <<= 1;
1583 }
1584 } else if (shift_control == 1) {
1585 if (s->sr[0x01] & 8) {
1586 disp_width <<= 1;
1587 }
1588 }
1589
1590 depth = s->get_bpp(s);
1591 if (s->line_offset != s->last_line_offset ||
1592 disp_width != s->last_width ||
1593 height != s->last_height ||
1594 s->last_depth != depth) {
1595 #if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
1596 if (depth == 16 || depth == 32) {
1597 #else
1598 if (depth == 32) {
1599 #endif
1600 qemu_free_displaysurface(s->ds);
1601 s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth,
1602 s->line_offset,
1603 s->vram_ptr + (s->start_addr * 4));
1604 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
1605 s->ds->surface->pf = qemu_different_endianness_pixelformat(depth);
1606 #endif
1607 dpy_resize(s->ds);
1608 } else {
1609 qemu_console_resize(s->ds, disp_width, height);
1610 }
1611 s->last_scr_width = disp_width;
1612 s->last_scr_height = height;
1613 s->last_width = disp_width;
1614 s->last_height = height;
1615 s->last_line_offset = s->line_offset;
1616 s->last_depth = depth;
1617 full_update = 1;
1618 } else if (is_buffer_shared(s->ds->surface) &&
1619 (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
1620 s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
1621 dpy_setdata(s->ds);
1622 }
1623
1624 s->rgb_to_pixel =
1625 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1626
1627 if (shift_control == 0) {
1628 full_update |= update_palette16(s);
1629 if (s->sr[0x01] & 8) {
1630 v = VGA_DRAW_LINE4D2;
1631 } else {
1632 v = VGA_DRAW_LINE4;
1633 }
1634 bits = 4;
1635 } else if (shift_control == 1) {
1636 full_update |= update_palette16(s);
1637 if (s->sr[0x01] & 8) {
1638 v = VGA_DRAW_LINE2D2;
1639 } else {
1640 v = VGA_DRAW_LINE2;
1641 }
1642 bits = 4;
1643 } else {
1644 switch(s->get_bpp(s)) {
1645 default:
1646 case 0:
1647 full_update |= update_palette256(s);
1648 v = VGA_DRAW_LINE8D2;
1649 bits = 4;
1650 break;
1651 case 8:
1652 full_update |= update_palette256(s);
1653 v = VGA_DRAW_LINE8;
1654 bits = 8;
1655 break;
1656 case 15:
1657 v = VGA_DRAW_LINE15;
1658 bits = 16;
1659 break;
1660 case 16:
1661 v = VGA_DRAW_LINE16;
1662 bits = 16;
1663 break;
1664 case 24:
1665 v = VGA_DRAW_LINE24;
1666 bits = 24;
1667 break;
1668 case 32:
1669 v = VGA_DRAW_LINE32;
1670 bits = 32;
1671 break;
1672 }
1673 }
1674 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1675
1676 if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
1677 s->cursor_invalidate(s);
1678
1679 line_offset = s->line_offset;
1680 #if 0
1681 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",
1682 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1683 #endif
1684 addr1 = (s->start_addr * 4);
1685 bwidth = (width * bits + 7) / 8;
1686 y_start = -1;
1687 page_min = -1;
1688 page_max = 0;
1689 d = ds_get_data(s->ds);
1690 linesize = ds_get_linesize(s->ds);
1691 y1 = 0;
1692 for(y = 0; y < height; y++) {
1693 addr = addr1;
1694 if (!(s->cr[0x17] & 1)) {
1695 int shift;
1696 /* CGA compatibility handling */
1697 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1698 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1699 }
1700 if (!(s->cr[0x17] & 2)) {
1701 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1702 }
1703 page0 = addr & TARGET_PAGE_MASK;
1704 page1 = (addr + bwidth - 1) & TARGET_PAGE_MASK;
1705 update = full_update |
1706 memory_region_get_dirty(&s->vram, page0, DIRTY_MEMORY_VGA) |
1707 memory_region_get_dirty(&s->vram, page1, DIRTY_MEMORY_VGA);
1708 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1709 /* if wide line, can use another page */
1710 update |= memory_region_get_dirty(&s->vram,
1711 page0 + TARGET_PAGE_SIZE,
1712 DIRTY_MEMORY_VGA);
1713 }
1714 /* explicit invalidation for the hardware cursor */
1715 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1716 if (update) {
1717 if (y_start < 0)
1718 y_start = y;
1719 if (page0 < page_min)
1720 page_min = page0;
1721 if (page1 > page_max)
1722 page_max = page1;
1723 if (!(is_buffer_shared(s->ds->surface))) {
1724 vga_draw_line(s, d, s->vram_ptr + addr, width);
1725 if (s->cursor_draw_line)
1726 s->cursor_draw_line(s, d, y);
1727 }
1728 } else {
1729 if (y_start >= 0) {
1730 /* flush to display */
1731 dpy_update(s->ds, 0, y_start,
1732 disp_width, y - y_start);
1733 y_start = -1;
1734 }
1735 }
1736 if (!multi_run) {
1737 mask = (s->cr[0x17] & 3) ^ 3;
1738 if ((y1 & mask) == mask)
1739 addr1 += line_offset;
1740 y1++;
1741 multi_run = multi_scan;
1742 } else {
1743 multi_run--;
1744 }
1745 /* line compare acts on the displayed lines */
1746 if (y == s->line_compare)
1747 addr1 = 0;
1748 d += linesize;
1749 }
1750 if (y_start >= 0) {
1751 /* flush to display */
1752 dpy_update(s->ds, 0, y_start,
1753 disp_width, y - y_start);
1754 }
1755 /* reset modified pages */
1756 if (page_max >= page_min) {
1757 memory_region_reset_dirty(&s->vram,
1758 page_min,
1759 page_max + TARGET_PAGE_SIZE - page_min,
1760 DIRTY_MEMORY_VGA);
1761 }
1762 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1763 }
1764
1765 static void vga_draw_blank(VGACommonState *s, int full_update)
1766 {
1767 int i, w, val;
1768 uint8_t *d;
1769
1770 if (!full_update)
1771 return;
1772 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1773 return;
1774
1775 s->rgb_to_pixel =
1776 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1777 if (ds_get_bits_per_pixel(s->ds) == 8)
1778 val = s->rgb_to_pixel(0, 0, 0);
1779 else
1780 val = 0;
1781 w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
1782 d = ds_get_data(s->ds);
1783 for(i = 0; i < s->last_scr_height; i++) {
1784 memset(d, val, w);
1785 d += ds_get_linesize(s->ds);
1786 }
1787 dpy_update(s->ds, 0, 0,
1788 s->last_scr_width, s->last_scr_height);
1789 }
1790
1791 #define GMODE_TEXT 0
1792 #define GMODE_GRAPH 1
1793 #define GMODE_BLANK 2
1794
1795 static void vga_update_display(void *opaque)
1796 {
1797 VGACommonState *s = opaque;
1798 int full_update, graphic_mode;
1799
1800 if (ds_get_bits_per_pixel(s->ds) == 0) {
1801 /* nothing to do */
1802 } else {
1803 full_update = 0;
1804 if (!(s->ar_index & 0x20)) {
1805 graphic_mode = GMODE_BLANK;
1806 } else {
1807 graphic_mode = s->gr[6] & 1;
1808 }
1809 if (graphic_mode != s->graphic_mode) {
1810 s->graphic_mode = graphic_mode;
1811 full_update = 1;
1812 }
1813 switch(graphic_mode) {
1814 case GMODE_TEXT:
1815 vga_draw_text(s, full_update);
1816 break;
1817 case GMODE_GRAPH:
1818 vga_draw_graphic(s, full_update);
1819 break;
1820 case GMODE_BLANK:
1821 default:
1822 vga_draw_blank(s, full_update);
1823 break;
1824 }
1825 }
1826 }
1827
1828 /* force a full display refresh */
1829 static void vga_invalidate_display(void *opaque)
1830 {
1831 VGACommonState *s = opaque;
1832
1833 s->last_width = -1;
1834 s->last_height = -1;
1835 }
1836
1837 void vga_common_reset(VGACommonState *s)
1838 {
1839 s->sr_index = 0;
1840 memset(s->sr, '\0', sizeof(s->sr));
1841 s->gr_index = 0;
1842 memset(s->gr, '\0', sizeof(s->gr));
1843 s->ar_index = 0;
1844 memset(s->ar, '\0', sizeof(s->ar));
1845 s->ar_flip_flop = 0;
1846 s->cr_index = 0;
1847 memset(s->cr, '\0', sizeof(s->cr));
1848 s->msr = 0;
1849 s->fcr = 0;
1850 s->st00 = 0;
1851 s->st01 = 0;
1852 s->dac_state = 0;
1853 s->dac_sub_index = 0;
1854 s->dac_read_index = 0;
1855 s->dac_write_index = 0;
1856 memset(s->dac_cache, '\0', sizeof(s->dac_cache));
1857 s->dac_8bit = 0;
1858 memset(s->palette, '\0', sizeof(s->palette));
1859 s->bank_offset = 0;
1860 #ifdef CONFIG_BOCHS_VBE
1861 s->vbe_index = 0;
1862 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
1863 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID5;
1864 s->vbe_start_addr = 0;
1865 s->vbe_line_offset = 0;
1866 s->vbe_bank_mask = (s->vram_size >> 16) - 1;
1867 #endif
1868 memset(s->font_offsets, '\0', sizeof(s->font_offsets));
1869 s->graphic_mode = -1; /* force full update */
1870 s->shift_control = 0;
1871 s->double_scan = 0;
1872 s->line_offset = 0;
1873 s->line_compare = 0;
1874 s->start_addr = 0;
1875 s->plane_updated = 0;
1876 s->last_cw = 0;
1877 s->last_ch = 0;
1878 s->last_width = 0;
1879 s->last_height = 0;
1880 s->last_scr_width = 0;
1881 s->last_scr_height = 0;
1882 s->cursor_start = 0;
1883 s->cursor_end = 0;
1884 s->cursor_offset = 0;
1885 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table));
1886 memset(s->last_palette, '\0', sizeof(s->last_palette));
1887 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr));
1888 switch (vga_retrace_method) {
1889 case VGA_RETRACE_DUMB:
1890 break;
1891 case VGA_RETRACE_PRECISE:
1892 memset(&s->retrace_info, 0, sizeof (s->retrace_info));
1893 break;
1894 }
1895 }
1896
1897 static void vga_reset(void *opaque)
1898 {
1899 VGACommonState *s = opaque;
1900 vga_common_reset(s);
1901 }
1902
1903 #define TEXTMODE_X(x) ((x) % width)
1904 #define TEXTMODE_Y(x) ((x) / width)
1905 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1906 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1907 /* relay text rendering to the display driver
1908 * instead of doing a full vga_update_display() */
1909 static void vga_update_text(void *opaque, console_ch_t *chardata)
1910 {
1911 VGACommonState *s = opaque;
1912 int graphic_mode, i, cursor_offset, cursor_visible;
1913 int cw, cheight, width, height, size, c_min, c_max;
1914 uint32_t *src;
1915 console_ch_t *dst, val;
1916 char msg_buffer[80];
1917 int full_update = 0;
1918
1919 if (!(s->ar_index & 0x20)) {
1920 graphic_mode = GMODE_BLANK;
1921 } else {
1922 graphic_mode = s->gr[6] & 1;
1923 }
1924 if (graphic_mode != s->graphic_mode) {
1925 s->graphic_mode = graphic_mode;
1926 full_update = 1;
1927 }
1928 if (s->last_width == -1) {
1929 s->last_width = 0;
1930 full_update = 1;
1931 }
1932
1933 switch (graphic_mode) {
1934 case GMODE_TEXT:
1935 /* TODO: update palette */
1936 full_update |= update_basic_params(s);
1937
1938 /* total width & height */
1939 cheight = (s->cr[9] & 0x1f) + 1;
1940 cw = 8;
1941 if (!(s->sr[1] & 0x01))
1942 cw = 9;
1943 if (s->sr[1] & 0x08)
1944 cw = 16; /* NOTE: no 18 pixel wide */
1945 width = (s->cr[0x01] + 1);
1946 if (s->cr[0x06] == 100) {
1947 /* ugly hack for CGA 160x100x16 - explain me the logic */
1948 height = 100;
1949 } else {
1950 height = s->cr[0x12] |
1951 ((s->cr[0x07] & 0x02) << 7) |
1952 ((s->cr[0x07] & 0x40) << 3);
1953 height = (height + 1) / cheight;
1954 }
1955
1956 size = (height * width);
1957 if (size > CH_ATTR_SIZE) {
1958 if (!full_update)
1959 return;
1960
1961 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode",
1962 width, height);
1963 break;
1964 }
1965
1966 if (width != s->last_width || height != s->last_height ||
1967 cw != s->last_cw || cheight != s->last_ch) {
1968 s->last_scr_width = width * cw;
1969 s->last_scr_height = height * cheight;
1970 s->ds->surface->width = width;
1971 s->ds->surface->height = height;
1972 dpy_resize(s->ds);
1973 s->last_width = width;
1974 s->last_height = height;
1975 s->last_ch = cheight;
1976 s->last_cw = cw;
1977 full_update = 1;
1978 }
1979
1980 /* Update "hardware" cursor */
1981 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1982 if (cursor_offset != s->cursor_offset ||
1983 s->cr[0xa] != s->cursor_start ||
1984 s->cr[0xb] != s->cursor_end || full_update) {
1985 cursor_visible = !(s->cr[0xa] & 0x20);
1986 if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
1987 dpy_cursor(s->ds,
1988 TEXTMODE_X(cursor_offset),
1989 TEXTMODE_Y(cursor_offset));
1990 else
1991 dpy_cursor(s->ds, -1, -1);
1992 s->cursor_offset = cursor_offset;
1993 s->cursor_start = s->cr[0xa];
1994 s->cursor_end = s->cr[0xb];
1995 }
1996
1997 src = (uint32_t *) s->vram_ptr + s->start_addr;
1998 dst = chardata;
1999
2000 if (full_update) {
2001 for (i = 0; i < size; src ++, dst ++, i ++)
2002 console_write_ch(dst, VMEM2CHTYPE(le32_to_cpu(*src)));
2003
2004 dpy_update(s->ds, 0, 0, width, height);
2005 } else {
2006 c_max = 0;
2007
2008 for (i = 0; i < size; src ++, dst ++, i ++) {
2009 console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
2010 if (*dst != val) {
2011 *dst = val;
2012 c_max = i;
2013 break;
2014 }
2015 }
2016 c_min = i;
2017 for (; i < size; src ++, dst ++, i ++) {
2018 console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
2019 if (*dst != val) {
2020 *dst = val;
2021 c_max = i;
2022 }
2023 }
2024
2025 if (c_min <= c_max) {
2026 i = TEXTMODE_Y(c_min);
2027 dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1);
2028 }
2029 }
2030
2031 return;
2032 case GMODE_GRAPH:
2033 if (!full_update)
2034 return;
2035
2036 s->get_resolution(s, &width, &height);
2037 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode",
2038 width, height);
2039 break;
2040 case GMODE_BLANK:
2041 default:
2042 if (!full_update)
2043 return;
2044
2045 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode");
2046 break;
2047 }
2048
2049 /* Display a message */
2050 s->last_width = 60;
2051 s->last_height = height = 3;
2052 dpy_cursor(s->ds, -1, -1);
2053 s->ds->surface->width = s->last_width;
2054 s->ds->surface->height = height;
2055 dpy_resize(s->ds);
2056
2057 for (dst = chardata, i = 0; i < s->last_width * height; i ++)
2058 console_write_ch(dst ++, ' ');
2059
2060 size = strlen(msg_buffer);
2061 width = (s->last_width - size) / 2;
2062 dst = chardata + s->last_width + width;
2063 for (i = 0; i < size; i ++)
2064 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
2065
2066 dpy_update(s->ds, 0, 0, s->last_width, height);
2067 }
2068
2069 static uint64_t vga_mem_read(void *opaque, target_phys_addr_t addr,
2070 unsigned size)
2071 {
2072 VGACommonState *s = opaque;
2073
2074 return vga_mem_readb(s, addr);
2075 }
2076
2077 static void vga_mem_write(void *opaque, target_phys_addr_t addr,
2078 uint64_t data, unsigned size)
2079 {
2080 VGACommonState *s = opaque;
2081
2082 return vga_mem_writeb(s, addr, data);
2083 }
2084
2085 const MemoryRegionOps vga_mem_ops = {
2086 .read = vga_mem_read,
2087 .write = vga_mem_write,
2088 .endianness = DEVICE_LITTLE_ENDIAN,
2089 .impl = {
2090 .min_access_size = 1,
2091 .max_access_size = 1,
2092 },
2093 };
2094
2095 static int vga_common_post_load(void *opaque, int version_id)
2096 {
2097 VGACommonState *s = opaque;
2098
2099 /* force refresh */
2100 s->graphic_mode = -1;
2101 return 0;
2102 }
2103
2104 const VMStateDescription vmstate_vga_common = {
2105 .name = "vga",
2106 .version_id = 2,
2107 .minimum_version_id = 2,
2108 .minimum_version_id_old = 2,
2109 .post_load = vga_common_post_load,
2110 .fields = (VMStateField []) {
2111 VMSTATE_UINT32(latch, VGACommonState),
2112 VMSTATE_UINT8(sr_index, VGACommonState),
2113 VMSTATE_PARTIAL_BUFFER(sr, VGACommonState, 8),
2114 VMSTATE_UINT8(gr_index, VGACommonState),
2115 VMSTATE_PARTIAL_BUFFER(gr, VGACommonState, 16),
2116 VMSTATE_UINT8(ar_index, VGACommonState),
2117 VMSTATE_BUFFER(ar, VGACommonState),
2118 VMSTATE_INT32(ar_flip_flop, VGACommonState),
2119 VMSTATE_UINT8(cr_index, VGACommonState),
2120 VMSTATE_BUFFER(cr, VGACommonState),
2121 VMSTATE_UINT8(msr, VGACommonState),
2122 VMSTATE_UINT8(fcr, VGACommonState),
2123 VMSTATE_UINT8(st00, VGACommonState),
2124 VMSTATE_UINT8(st01, VGACommonState),
2125
2126 VMSTATE_UINT8(dac_state, VGACommonState),
2127 VMSTATE_UINT8(dac_sub_index, VGACommonState),
2128 VMSTATE_UINT8(dac_read_index, VGACommonState),
2129 VMSTATE_UINT8(dac_write_index, VGACommonState),
2130 VMSTATE_BUFFER(dac_cache, VGACommonState),
2131 VMSTATE_BUFFER(palette, VGACommonState),
2132
2133 VMSTATE_INT32(bank_offset, VGACommonState),
2134 VMSTATE_UINT8_EQUAL(is_vbe_vmstate, VGACommonState),
2135 #ifdef CONFIG_BOCHS_VBE
2136 VMSTATE_UINT16(vbe_index, VGACommonState),
2137 VMSTATE_UINT16_ARRAY(vbe_regs, VGACommonState, VBE_DISPI_INDEX_NB),
2138 VMSTATE_UINT32(vbe_start_addr, VGACommonState),
2139 VMSTATE_UINT32(vbe_line_offset, VGACommonState),
2140 VMSTATE_UINT32(vbe_bank_mask, VGACommonState),
2141 #endif
2142 VMSTATE_END_OF_LIST()
2143 }
2144 };
2145
2146 void vga_common_init(VGACommonState *s, int vga_ram_size)
2147 {
2148 int i, j, v, b;
2149
2150 for(i = 0;i < 256; i++) {
2151 v = 0;
2152 for(j = 0; j < 8; j++) {
2153 v |= ((i >> j) & 1) << (j * 4);
2154 }
2155 expand4[i] = v;
2156
2157 v = 0;
2158 for(j = 0; j < 4; j++) {
2159 v |= ((i >> (2 * j)) & 3) << (j * 4);
2160 }
2161 expand2[i] = v;
2162 }
2163 for(i = 0; i < 16; i++) {
2164 v = 0;
2165 for(j = 0; j < 4; j++) {
2166 b = ((i >> j) & 1);
2167 v |= b << (2 * j);
2168 v |= b << (2 * j + 1);
2169 }
2170 expand4to8[i] = v;
2171 }
2172
2173 #ifdef CONFIG_BOCHS_VBE
2174 s->is_vbe_vmstate = 1;
2175 #else
2176 s->is_vbe_vmstate = 0;
2177 #endif
2178 memory_region_init_ram(&s->vram, NULL, "vga.vram", vga_ram_size);
2179 s->vram_ptr = memory_region_get_ram_ptr(&s->vram);
2180 s->vram_size = vga_ram_size;
2181 s->get_bpp = vga_get_bpp;
2182 s->get_offsets = vga_get_offsets;
2183 s->get_resolution = vga_get_resolution;
2184 s->update = vga_update_display;
2185 s->invalidate = vga_invalidate_display;
2186 s->screen_dump = vga_screen_dump;
2187 s->text_update = vga_update_text;
2188 switch (vga_retrace_method) {
2189 case VGA_RETRACE_DUMB:
2190 s->retrace = vga_dumb_retrace;
2191 s->update_retrace_info = vga_dumb_update_retrace_info;
2192 break;
2193
2194 case VGA_RETRACE_PRECISE:
2195 s->retrace = vga_precise_retrace;
2196 s->update_retrace_info = vga_precise_update_retrace_info;
2197 break;
2198 }
2199 vga_dirty_log_start(s);
2200 }
2201
2202 /* used by both ISA and PCI */
2203 MemoryRegion *vga_init_io(VGACommonState *s)
2204 {
2205 MemoryRegion *vga_mem;
2206
2207 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
2208
2209 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
2210 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
2211 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
2212 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
2213
2214 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
2215
2216 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
2217 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
2218 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
2219 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
2220
2221 #ifdef CONFIG_BOCHS_VBE
2222 #if defined (TARGET_I386)
2223 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2224 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
2225
2226 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2227 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
2228 #else
2229 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
2230 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
2231
2232 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
2233 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
2234 #endif
2235 #endif /* CONFIG_BOCHS_VBE */
2236
2237 vga_mem = qemu_malloc(sizeof(*vga_mem));
2238 memory_region_init_io(vga_mem, &vga_mem_ops, s,
2239 "vga-lowmem", 0x20000);
2240
2241 return vga_mem;
2242 }
2243
2244 void vga_init(VGACommonState *s)
2245 {
2246 MemoryRegion *vga_io_memory;
2247
2248 qemu_register_reset(vga_reset, s);
2249
2250 s->bank_offset = 0;
2251
2252 vga_io_memory = vga_init_io(s);
2253 memory_region_add_subregion_overlap(get_system_memory(),
2254 isa_mem_base + 0x000a0000,
2255 vga_io_memory,
2256 1);
2257 memory_region_set_coalescing(vga_io_memory);
2258 }
2259
2260 void vga_init_vbe(VGACommonState *s)
2261 {
2262 #ifdef CONFIG_BOCHS_VBE
2263 /* XXX: use optimized standard vga accesses */
2264 memory_region_add_subregion(get_system_memory(),
2265 VBE_DISPI_LFB_PHYSICAL_ADDRESS,
2266 &s->vram);
2267 s->vbe_mapped = 1;
2268 #endif
2269 }
2270 /********************************************************/
2271 /* vga screen dump */
2272
2273 static void vga_save_dpy_update(DisplayState *ds,
2274 int x, int y, int w, int h)
2275 {
2276 if (screen_dump_filename) {
2277 ppm_save(screen_dump_filename, ds->surface);
2278 screen_dump_filename = NULL;
2279 }
2280 }
2281
2282 static void vga_save_dpy_resize(DisplayState *s)
2283 {
2284 }
2285
2286 static void vga_save_dpy_refresh(DisplayState *s)
2287 {
2288 }
2289
2290 int ppm_save(const char *filename, struct DisplaySurface *ds)
2291 {
2292 FILE *f;
2293 uint8_t *d, *d1;
2294 uint32_t v;
2295 int y, x;
2296 uint8_t r, g, b;
2297 int ret;
2298 char *linebuf, *pbuf;
2299
2300 f = fopen(filename, "wb");
2301 if (!f)
2302 return -1;
2303 fprintf(f, "P6\n%d %d\n%d\n",
2304 ds->width, ds->height, 255);
2305 linebuf = qemu_malloc(ds->width * 3);
2306 d1 = ds->data;
2307 for(y = 0; y < ds->height; y++) {
2308 d = d1;
2309 pbuf = linebuf;
2310 for(x = 0; x < ds->width; x++) {
2311 if (ds->pf.bits_per_pixel == 32)
2312 v = *(uint32_t *)d;
2313 else
2314 v = (uint32_t) (*(uint16_t *)d);
2315 r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 /
2316 (ds->pf.rmax + 1);
2317 g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 /
2318 (ds->pf.gmax + 1);
2319 b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 /
2320 (ds->pf.bmax + 1);
2321 *pbuf++ = r;
2322 *pbuf++ = g;
2323 *pbuf++ = b;
2324 d += ds->pf.bytes_per_pixel;
2325 }
2326 d1 += ds->linesize;
2327 ret = fwrite(linebuf, 1, pbuf - linebuf, f);
2328 (void)ret;
2329 }
2330 qemu_free(linebuf);
2331 fclose(f);
2332 return 0;
2333 }
2334
2335 static DisplayChangeListener* vga_screen_dump_init(DisplayState *ds)
2336 {
2337 DisplayChangeListener *dcl;
2338
2339 dcl = qemu_mallocz(sizeof(DisplayChangeListener));
2340 dcl->dpy_update = vga_save_dpy_update;
2341 dcl->dpy_resize = vga_save_dpy_resize;
2342 dcl->dpy_refresh = vga_save_dpy_refresh;
2343 register_displaychangelistener(ds, dcl);
2344 return dcl;
2345 }
2346
2347 /* save the vga display in a PPM image even if no display is
2348 available */
2349 static void vga_screen_dump(void *opaque, const char *filename)
2350 {
2351 VGACommonState *s = opaque;
2352
2353 if (!screen_dump_dcl)
2354 screen_dump_dcl = vga_screen_dump_init(s->ds);
2355
2356 screen_dump_filename = (char *)filename;
2357 vga_invalidate_display(s);
2358 vga_hw_update();
2359 }
2360
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