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1 | /* | |
2 | * QEMU VGA Emulator. | |
3 | * | |
4 | * Copyright (c) 2003 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include "vl.h" | |
25 | ||
26 | //#define DEBUG_VGA | |
27 | //#define DEBUG_VGA_MEM | |
28 | //#define DEBUG_VGA_REG | |
29 | ||
30 | //#define DEBUG_S3 | |
31 | //#define DEBUG_BOCHS_VBE | |
32 | ||
33 | #define CONFIG_S3VGA | |
34 | ||
35 | #define MSR_COLOR_EMULATION 0x01 | |
36 | #define MSR_PAGE_SELECT 0x20 | |
37 | ||
38 | #define ST01_V_RETRACE 0x08 | |
39 | #define ST01_DISP_ENABLE 0x01 | |
40 | ||
41 | /* bochs VBE support */ | |
42 | #define CONFIG_BOCHS_VBE | |
43 | ||
44 | #define VBE_DISPI_MAX_XRES 1024 | |
45 | #define VBE_DISPI_MAX_YRES 768 | |
46 | ||
47 | #define VBE_DISPI_INDEX_ID 0x0 | |
48 | #define VBE_DISPI_INDEX_XRES 0x1 | |
49 | #define VBE_DISPI_INDEX_YRES 0x2 | |
50 | #define VBE_DISPI_INDEX_BPP 0x3 | |
51 | #define VBE_DISPI_INDEX_ENABLE 0x4 | |
52 | #define VBE_DISPI_INDEX_BANK 0x5 | |
53 | #define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 | |
54 | #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 | |
55 | #define VBE_DISPI_INDEX_X_OFFSET 0x8 | |
56 | #define VBE_DISPI_INDEX_Y_OFFSET 0x9 | |
57 | #define VBE_DISPI_INDEX_NB 0xa | |
58 | ||
59 | #define VBE_DISPI_ID0 0xB0C0 | |
60 | #define VBE_DISPI_ID1 0xB0C1 | |
61 | #define VBE_DISPI_ID2 0xB0C2 | |
62 | ||
63 | #define VBE_DISPI_DISABLED 0x00 | |
64 | #define VBE_DISPI_ENABLED 0x01 | |
65 | #define VBE_DISPI_LFB_ENABLED 0x40 | |
66 | #define VBE_DISPI_NOCLEARMEM 0x80 | |
67 | ||
68 | #define VBE_DISPI_LFB_PHYSICAL_ADDRESS 0xE0000000 | |
69 | ||
70 | typedef struct VGAState { | |
71 | uint8_t *vram_ptr; | |
72 | unsigned long vram_offset; | |
73 | unsigned int vram_size; | |
74 | uint32_t latch; | |
75 | uint8_t sr_index; | |
76 | uint8_t sr[8]; | |
77 | uint8_t gr_index; | |
78 | uint8_t gr[16]; | |
79 | uint8_t ar_index; | |
80 | uint8_t ar[21]; | |
81 | int ar_flip_flop; | |
82 | uint8_t cr_index; | |
83 | uint8_t cr[256]; /* CRT registers */ | |
84 | uint8_t msr; /* Misc Output Register */ | |
85 | uint8_t fcr; /* Feature Control Register */ | |
86 | uint8_t st00; /* status 0 */ | |
87 | uint8_t st01; /* status 1 */ | |
88 | uint8_t dac_state; | |
89 | uint8_t dac_sub_index; | |
90 | uint8_t dac_read_index; | |
91 | uint8_t dac_write_index; | |
92 | uint8_t dac_cache[3]; /* used when writing */ | |
93 | uint8_t palette[768]; | |
94 | uint32_t bank_offset; | |
95 | #ifdef CONFIG_BOCHS_VBE | |
96 | uint16_t vbe_index; | |
97 | uint16_t vbe_regs[VBE_DISPI_INDEX_NB]; | |
98 | uint32_t vbe_start_addr; | |
99 | uint32_t vbe_line_offset; | |
100 | uint32_t vbe_bank_mask; | |
101 | #endif | |
102 | /* display refresh support */ | |
103 | DisplayState *ds; | |
104 | uint32_t font_offsets[2]; | |
105 | int graphic_mode; | |
106 | uint8_t shift_control; | |
107 | uint8_t double_scan; | |
108 | uint32_t line_offset; | |
109 | uint32_t line_compare; | |
110 | uint32_t start_addr; | |
111 | uint8_t last_cw, last_ch; | |
112 | uint32_t last_width, last_height; | |
113 | uint8_t cursor_start, cursor_end; | |
114 | uint32_t cursor_offset; | |
115 | unsigned int (*rgb_to_pixel)(unsigned int r, unsigned int g, unsigned b); | |
116 | /* tell for each page if it has been updated since the last time */ | |
117 | uint32_t last_palette[256]; | |
118 | #define CH_ATTR_SIZE (160 * 100) | |
119 | uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */ | |
120 | } VGAState; | |
121 | ||
122 | /* force some bits to zero */ | |
123 | static const uint8_t sr_mask[8] = { | |
124 | (uint8_t)~0xfc, | |
125 | (uint8_t)~0xc2, | |
126 | (uint8_t)~0xf0, | |
127 | (uint8_t)~0xc0, | |
128 | (uint8_t)~0xf1, | |
129 | (uint8_t)~0xff, | |
130 | (uint8_t)~0xff, | |
131 | (uint8_t)~0x00, | |
132 | }; | |
133 | ||
134 | static const uint8_t gr_mask[16] = { | |
135 | (uint8_t)~0xf0, /* 0x00 */ | |
136 | (uint8_t)~0xf0, /* 0x01 */ | |
137 | (uint8_t)~0xf0, /* 0x02 */ | |
138 | (uint8_t)~0xe0, /* 0x03 */ | |
139 | (uint8_t)~0xfc, /* 0x04 */ | |
140 | (uint8_t)~0x84, /* 0x05 */ | |
141 | (uint8_t)~0xf0, /* 0x06 */ | |
142 | (uint8_t)~0xf0, /* 0x07 */ | |
143 | (uint8_t)~0x00, /* 0x08 */ | |
144 | (uint8_t)~0xff, /* 0x09 */ | |
145 | (uint8_t)~0xff, /* 0x0a */ | |
146 | (uint8_t)~0xff, /* 0x0b */ | |
147 | (uint8_t)~0xff, /* 0x0c */ | |
148 | (uint8_t)~0xff, /* 0x0d */ | |
149 | (uint8_t)~0xff, /* 0x0e */ | |
150 | (uint8_t)~0xff, /* 0x0f */ | |
151 | }; | |
152 | ||
153 | #define cbswap_32(__x) \ | |
154 | ((uint32_t)( \ | |
155 | (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ | |
156 | (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ | |
157 | (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ | |
158 | (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )) | |
159 | ||
160 | #ifdef WORDS_BIGENDIAN | |
161 | #define PAT(x) cbswap_32(x) | |
162 | #else | |
163 | #define PAT(x) (x) | |
164 | #endif | |
165 | ||
166 | #ifdef WORDS_BIGENDIAN | |
167 | #define BIG 1 | |
168 | #else | |
169 | #define BIG 0 | |
170 | #endif | |
171 | ||
172 | #ifdef WORDS_BIGENDIAN | |
173 | #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff) | |
174 | #else | |
175 | #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff) | |
176 | #endif | |
177 | ||
178 | static const uint32_t mask16[16] = { | |
179 | PAT(0x00000000), | |
180 | PAT(0x000000ff), | |
181 | PAT(0x0000ff00), | |
182 | PAT(0x0000ffff), | |
183 | PAT(0x00ff0000), | |
184 | PAT(0x00ff00ff), | |
185 | PAT(0x00ffff00), | |
186 | PAT(0x00ffffff), | |
187 | PAT(0xff000000), | |
188 | PAT(0xff0000ff), | |
189 | PAT(0xff00ff00), | |
190 | PAT(0xff00ffff), | |
191 | PAT(0xffff0000), | |
192 | PAT(0xffff00ff), | |
193 | PAT(0xffffff00), | |
194 | PAT(0xffffffff), | |
195 | }; | |
196 | ||
197 | #undef PAT | |
198 | ||
199 | #ifdef WORDS_BIGENDIAN | |
200 | #define PAT(x) (x) | |
201 | #else | |
202 | #define PAT(x) cbswap_32(x) | |
203 | #endif | |
204 | ||
205 | static const uint32_t dmask16[16] = { | |
206 | PAT(0x00000000), | |
207 | PAT(0x000000ff), | |
208 | PAT(0x0000ff00), | |
209 | PAT(0x0000ffff), | |
210 | PAT(0x00ff0000), | |
211 | PAT(0x00ff00ff), | |
212 | PAT(0x00ffff00), | |
213 | PAT(0x00ffffff), | |
214 | PAT(0xff000000), | |
215 | PAT(0xff0000ff), | |
216 | PAT(0xff00ff00), | |
217 | PAT(0xff00ffff), | |
218 | PAT(0xffff0000), | |
219 | PAT(0xffff00ff), | |
220 | PAT(0xffffff00), | |
221 | PAT(0xffffffff), | |
222 | }; | |
223 | ||
224 | static const uint32_t dmask4[4] = { | |
225 | PAT(0x00000000), | |
226 | PAT(0x0000ffff), | |
227 | PAT(0xffff0000), | |
228 | PAT(0xffffffff), | |
229 | }; | |
230 | ||
231 | static uint32_t expand4[256]; | |
232 | static uint16_t expand2[256]; | |
233 | static uint8_t expand4to8[16]; | |
234 | ||
235 | VGAState vga_state; | |
236 | int vga_io_memory; | |
237 | ||
238 | static uint32_t vga_ioport_read(void *opaque, uint32_t addr) | |
239 | { | |
240 | VGAState *s = opaque; | |
241 | int val, index; | |
242 | ||
243 | /* check port range access depending on color/monochrome mode */ | |
244 | if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || | |
245 | (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) { | |
246 | val = 0xff; | |
247 | } else { | |
248 | switch(addr) { | |
249 | case 0x3c0: | |
250 | if (s->ar_flip_flop == 0) { | |
251 | val = s->ar_index; | |
252 | } else { | |
253 | val = 0; | |
254 | } | |
255 | break; | |
256 | case 0x3c1: | |
257 | index = s->ar_index & 0x1f; | |
258 | if (index < 21) | |
259 | val = s->ar[index]; | |
260 | else | |
261 | val = 0; | |
262 | break; | |
263 | case 0x3c2: | |
264 | val = s->st00; | |
265 | break; | |
266 | case 0x3c4: | |
267 | val = s->sr_index; | |
268 | break; | |
269 | case 0x3c5: | |
270 | val = s->sr[s->sr_index]; | |
271 | #ifdef DEBUG_VGA_REG | |
272 | printf("vga: read SR%x = 0x%02x\n", s->sr_index, val); | |
273 | #endif | |
274 | break; | |
275 | case 0x3c7: | |
276 | val = s->dac_state; | |
277 | break; | |
278 | case 0x3c9: | |
279 | val = s->palette[s->dac_read_index * 3 + s->dac_sub_index]; | |
280 | if (++s->dac_sub_index == 3) { | |
281 | s->dac_sub_index = 0; | |
282 | s->dac_read_index++; | |
283 | } | |
284 | break; | |
285 | case 0x3ca: | |
286 | val = s->fcr; | |
287 | break; | |
288 | case 0x3cc: | |
289 | val = s->msr; | |
290 | break; | |
291 | case 0x3ce: | |
292 | val = s->gr_index; | |
293 | break; | |
294 | case 0x3cf: | |
295 | val = s->gr[s->gr_index]; | |
296 | #ifdef DEBUG_VGA_REG | |
297 | printf("vga: read GR%x = 0x%02x\n", s->gr_index, val); | |
298 | #endif | |
299 | break; | |
300 | case 0x3b4: | |
301 | case 0x3d4: | |
302 | val = s->cr_index; | |
303 | break; | |
304 | case 0x3b5: | |
305 | case 0x3d5: | |
306 | val = s->cr[s->cr_index]; | |
307 | #ifdef DEBUG_VGA_REG | |
308 | printf("vga: read CR%x = 0x%02x\n", s->cr_index, val); | |
309 | #endif | |
310 | #ifdef DEBUG_S3 | |
311 | if (s->cr_index >= 0x20) | |
312 | printf("S3: CR read index=0x%x val=0x%x\n", | |
313 | s->cr_index, val); | |
314 | #endif | |
315 | break; | |
316 | case 0x3ba: | |
317 | case 0x3da: | |
318 | /* just toggle to fool polling */ | |
319 | s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE; | |
320 | val = s->st01; | |
321 | s->ar_flip_flop = 0; | |
322 | break; | |
323 | default: | |
324 | val = 0x00; | |
325 | break; | |
326 | } | |
327 | } | |
328 | #if defined(DEBUG_VGA) | |
329 | printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val); | |
330 | #endif | |
331 | return val; | |
332 | } | |
333 | ||
334 | static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val) | |
335 | { | |
336 | VGAState *s = opaque; | |
337 | int index, v; | |
338 | ||
339 | /* check port range access depending on color/monochrome mode */ | |
340 | if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || | |
341 | (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) | |
342 | return; | |
343 | ||
344 | #ifdef DEBUG_VGA | |
345 | printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val); | |
346 | #endif | |
347 | ||
348 | switch(addr) { | |
349 | case 0x3c0: | |
350 | if (s->ar_flip_flop == 0) { | |
351 | val &= 0x3f; | |
352 | s->ar_index = val; | |
353 | } else { | |
354 | index = s->ar_index & 0x1f; | |
355 | switch(index) { | |
356 | case 0x00 ... 0x0f: | |
357 | s->ar[index] = val & 0x3f; | |
358 | break; | |
359 | case 0x10: | |
360 | s->ar[index] = val & ~0x10; | |
361 | break; | |
362 | case 0x11: | |
363 | s->ar[index] = val; | |
364 | break; | |
365 | case 0x12: | |
366 | s->ar[index] = val & ~0xc0; | |
367 | break; | |
368 | case 0x13: | |
369 | s->ar[index] = val & ~0xf0; | |
370 | break; | |
371 | case 0x14: | |
372 | s->ar[index] = val & ~0xf0; | |
373 | break; | |
374 | default: | |
375 | break; | |
376 | } | |
377 | } | |
378 | s->ar_flip_flop ^= 1; | |
379 | break; | |
380 | case 0x3c2: | |
381 | s->msr = val & ~0x10; | |
382 | break; | |
383 | case 0x3c4: | |
384 | s->sr_index = val & 7; | |
385 | break; | |
386 | case 0x3c5: | |
387 | #ifdef DEBUG_VGA_REG | |
388 | printf("vga: write SR%x = 0x%02x\n", s->sr_index, val); | |
389 | #endif | |
390 | s->sr[s->sr_index] = val & sr_mask[s->sr_index]; | |
391 | break; | |
392 | case 0x3c7: | |
393 | s->dac_read_index = val; | |
394 | s->dac_sub_index = 0; | |
395 | s->dac_state = 3; | |
396 | break; | |
397 | case 0x3c8: | |
398 | s->dac_write_index = val; | |
399 | s->dac_sub_index = 0; | |
400 | s->dac_state = 0; | |
401 | break; | |
402 | case 0x3c9: | |
403 | s->dac_cache[s->dac_sub_index] = val; | |
404 | if (++s->dac_sub_index == 3) { | |
405 | memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3); | |
406 | s->dac_sub_index = 0; | |
407 | s->dac_write_index++; | |
408 | } | |
409 | break; | |
410 | case 0x3ce: | |
411 | s->gr_index = val & 0x0f; | |
412 | break; | |
413 | case 0x3cf: | |
414 | #ifdef DEBUG_VGA_REG | |
415 | printf("vga: write GR%x = 0x%02x\n", s->gr_index, val); | |
416 | #endif | |
417 | s->gr[s->gr_index] = val & gr_mask[s->gr_index]; | |
418 | break; | |
419 | case 0x3b4: | |
420 | case 0x3d4: | |
421 | s->cr_index = val; | |
422 | break; | |
423 | case 0x3b5: | |
424 | case 0x3d5: | |
425 | #ifdef DEBUG_VGA_REG | |
426 | printf("vga: write CR%x = 0x%02x\n", s->cr_index, val); | |
427 | #endif | |
428 | /* handle CR0-7 protection */ | |
429 | if ((s->cr[11] & 0x80) && s->cr_index <= 7) { | |
430 | /* can always write bit 4 of CR7 */ | |
431 | if (s->cr_index == 7) | |
432 | s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10); | |
433 | return; | |
434 | } | |
435 | switch(s->cr_index) { | |
436 | case 0x01: /* horizontal display end */ | |
437 | case 0x07: | |
438 | case 0x09: | |
439 | case 0x0c: | |
440 | case 0x0d: | |
441 | case 0x12: /* veritcal display end */ | |
442 | s->cr[s->cr_index] = val; | |
443 | break; | |
444 | ||
445 | #ifdef CONFIG_S3VGA | |
446 | /* S3 registers */ | |
447 | case 0x2d: | |
448 | case 0x2e: | |
449 | case 0x2f: | |
450 | case 0x30: | |
451 | /* chip ID, cannot write */ | |
452 | break; | |
453 | case 0x31: | |
454 | /* update start address */ | |
455 | s->cr[s->cr_index] = val; | |
456 | v = (val >> 4) & 3; | |
457 | s->cr[0x69] = (s->cr[69] & ~0x03) | v; | |
458 | break; | |
459 | case 0x51: | |
460 | /* update start address */ | |
461 | s->cr[s->cr_index] = val; | |
462 | v = val & 3; | |
463 | s->cr[0x69] = (s->cr[69] & ~0x0c) | (v << 2); | |
464 | break; | |
465 | #endif | |
466 | default: | |
467 | s->cr[s->cr_index] = val; | |
468 | break; | |
469 | } | |
470 | #ifdef DEBUG_S3 | |
471 | if (s->cr_index >= 0x20) | |
472 | printf("S3: CR write index=0x%x val=0x%x\n", | |
473 | s->cr_index, val); | |
474 | #endif | |
475 | break; | |
476 | case 0x3ba: | |
477 | case 0x3da: | |
478 | s->fcr = val & 0x10; | |
479 | break; | |
480 | } | |
481 | } | |
482 | ||
483 | #ifdef CONFIG_BOCHS_VBE | |
484 | static uint32_t vbe_ioport_read(void *opaque, uint32_t addr) | |
485 | { | |
486 | VGAState *s = opaque; | |
487 | uint32_t val; | |
488 | ||
489 | addr &= 1; | |
490 | if (addr == 0) { | |
491 | val = s->vbe_index; | |
492 | } else { | |
493 | if (s->vbe_index <= VBE_DISPI_INDEX_NB) | |
494 | val = s->vbe_regs[s->vbe_index]; | |
495 | else | |
496 | val = 0; | |
497 | #ifdef DEBUG_BOCHS_VBE | |
498 | printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val); | |
499 | #endif | |
500 | } | |
501 | return val; | |
502 | } | |
503 | ||
504 | static void vbe_ioport_write(void *opaque, uint32_t addr, uint32_t val) | |
505 | { | |
506 | VGAState *s = opaque; | |
507 | ||
508 | addr &= 1; | |
509 | if (addr == 0) { | |
510 | s->vbe_index = val; | |
511 | } else if (s->vbe_index <= VBE_DISPI_INDEX_NB) { | |
512 | #ifdef DEBUG_BOCHS_VBE | |
513 | printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val); | |
514 | #endif | |
515 | switch(s->vbe_index) { | |
516 | case VBE_DISPI_INDEX_ID: | |
517 | if (val == VBE_DISPI_ID0 || | |
518 | val == VBE_DISPI_ID1 || | |
519 | val == VBE_DISPI_ID2) { | |
520 | s->vbe_regs[s->vbe_index] = val; | |
521 | } | |
522 | break; | |
523 | case VBE_DISPI_INDEX_XRES: | |
524 | if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { | |
525 | s->vbe_regs[s->vbe_index] = val; | |
526 | } | |
527 | break; | |
528 | case VBE_DISPI_INDEX_YRES: | |
529 | if (val <= VBE_DISPI_MAX_YRES) { | |
530 | s->vbe_regs[s->vbe_index] = val; | |
531 | } | |
532 | break; | |
533 | case VBE_DISPI_INDEX_BPP: | |
534 | if (val == 0) | |
535 | val = 8; | |
536 | if (val == 4 || val == 8 || val == 15 || | |
537 | val == 16 || val == 24 || val == 32) { | |
538 | s->vbe_regs[s->vbe_index] = val; | |
539 | } | |
540 | break; | |
541 | case VBE_DISPI_INDEX_BANK: | |
542 | val &= s->vbe_bank_mask; | |
543 | s->vbe_regs[s->vbe_index] = val; | |
544 | s->bank_offset = (val << 16) - 0xa0000; | |
545 | break; | |
546 | case VBE_DISPI_INDEX_ENABLE: | |
547 | if (val & VBE_DISPI_ENABLED) { | |
548 | int h, shift_control; | |
549 | ||
550 | s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = | |
551 | s->vbe_regs[VBE_DISPI_INDEX_XRES]; | |
552 | s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = | |
553 | s->vbe_regs[VBE_DISPI_INDEX_YRES]; | |
554 | s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0; | |
555 | s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0; | |
556 | ||
557 | if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) | |
558 | s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1; | |
559 | else | |
560 | s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * | |
561 | ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); | |
562 | s->vbe_start_addr = 0; | |
563 | ||
564 | /* clear the screen (should be done in BIOS) */ | |
565 | if (!(val & VBE_DISPI_NOCLEARMEM)) { | |
566 | memset(s->vram_ptr, 0, | |
567 | s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); | |
568 | } | |
569 | ||
570 | /* we initialize the VGA graphic mode (should be done | |
571 | in BIOS) */ | |
572 | s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */ | |
573 | s->cr[0x17] |= 3; /* no CGA modes */ | |
574 | s->cr[0x13] = s->vbe_line_offset >> 3; | |
575 | /* width */ | |
576 | s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; | |
577 | /* height */ | |
578 | h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1; | |
579 | s->cr[0x12] = h; | |
580 | s->cr[0x07] = (s->cr[0x07] & ~0x42) | | |
581 | ((h >> 7) & 0x02) | ((h >> 3) & 0x40); | |
582 | /* line compare to 1023 */ | |
583 | s->cr[0x18] = 0xff; | |
584 | s->cr[0x07] |= 0x10; | |
585 | s->cr[0x09] |= 0x40; | |
586 | ||
587 | if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { | |
588 | shift_control = 0; | |
589 | s->sr[0x01] &= ~8; /* no double line */ | |
590 | } else { | |
591 | shift_control = 2; | |
592 | } | |
593 | s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5); | |
594 | s->cr[0x09] &= ~0x9f; /* no double scan */ | |
595 | s->vbe_regs[s->vbe_index] = val; | |
596 | } else { | |
597 | /* XXX: the bios should do that */ | |
598 | s->bank_offset = -0xa0000; | |
599 | } | |
600 | break; | |
601 | case VBE_DISPI_INDEX_VIRT_WIDTH: | |
602 | { | |
603 | int w, h, line_offset; | |
604 | ||
605 | if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES]) | |
606 | return; | |
607 | w = val; | |
608 | if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) | |
609 | line_offset = w >> 1; | |
610 | else | |
611 | line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); | |
612 | h = s->vram_size / line_offset; | |
613 | /* XXX: support weird bochs semantics ? */ | |
614 | if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES]) | |
615 | return; | |
616 | s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; | |
617 | s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; | |
618 | s->vbe_line_offset = line_offset; | |
619 | } | |
620 | break; | |
621 | case VBE_DISPI_INDEX_X_OFFSET: | |
622 | case VBE_DISPI_INDEX_Y_OFFSET: | |
623 | { | |
624 | int x; | |
625 | s->vbe_regs[s->vbe_index] = val; | |
626 | s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; | |
627 | x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; | |
628 | if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) | |
629 | s->vbe_start_addr += x >> 1; | |
630 | else | |
631 | s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); | |
632 | s->vbe_start_addr >>= 2; | |
633 | } | |
634 | break; | |
635 | default: | |
636 | break; | |
637 | } | |
638 | } | |
639 | } | |
640 | #endif | |
641 | ||
642 | /* called for accesses between 0xa0000 and 0xc0000 */ | |
643 | static uint32_t vga_mem_readb(uint32_t addr) | |
644 | { | |
645 | VGAState *s = &vga_state; | |
646 | int memory_map_mode, plane; | |
647 | uint32_t ret; | |
648 | ||
649 | /* convert to VGA memory offset */ | |
650 | memory_map_mode = (s->gr[6] >> 2) & 3; | |
651 | switch(memory_map_mode) { | |
652 | case 0: | |
653 | addr -= 0xa0000; | |
654 | break; | |
655 | case 1: | |
656 | if (addr >= 0xb0000) | |
657 | return 0xff; | |
658 | addr += s->bank_offset; | |
659 | break; | |
660 | case 2: | |
661 | addr -= 0xb0000; | |
662 | if (addr >= 0x8000) | |
663 | return 0xff; | |
664 | break; | |
665 | default: | |
666 | case 3: | |
667 | addr -= 0xb8000; | |
668 | if (addr >= 0x8000) | |
669 | return 0xff; | |
670 | break; | |
671 | } | |
672 | ||
673 | if (s->sr[4] & 0x08) { | |
674 | /* chain 4 mode : simplest access */ | |
675 | ret = s->vram_ptr[addr]; | |
676 | } else if (s->gr[5] & 0x10) { | |
677 | /* odd/even mode (aka text mode mapping) */ | |
678 | plane = (s->gr[4] & 2) | (addr & 1); | |
679 | ret = s->vram_ptr[((addr & ~1) << 1) | plane]; | |
680 | } else { | |
681 | /* standard VGA latched access */ | |
682 | s->latch = ((uint32_t *)s->vram_ptr)[addr]; | |
683 | ||
684 | if (!(s->gr[5] & 0x08)) { | |
685 | /* read mode 0 */ | |
686 | plane = s->gr[4]; | |
687 | ret = GET_PLANE(s->latch, plane); | |
688 | } else { | |
689 | /* read mode 1 */ | |
690 | ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]]; | |
691 | ret |= ret >> 16; | |
692 | ret |= ret >> 8; | |
693 | ret = (~ret) & 0xff; | |
694 | } | |
695 | } | |
696 | return ret; | |
697 | } | |
698 | ||
699 | static uint32_t vga_mem_readw(uint32_t addr) | |
700 | { | |
701 | uint32_t v; | |
702 | v = vga_mem_readb(addr); | |
703 | v |= vga_mem_readb(addr + 1) << 8; | |
704 | return v; | |
705 | } | |
706 | ||
707 | static uint32_t vga_mem_readl(uint32_t addr) | |
708 | { | |
709 | uint32_t v; | |
710 | v = vga_mem_readb(addr); | |
711 | v |= vga_mem_readb(addr + 1) << 8; | |
712 | v |= vga_mem_readb(addr + 2) << 16; | |
713 | v |= vga_mem_readb(addr + 3) << 24; | |
714 | return v; | |
715 | } | |
716 | ||
717 | /* called for accesses between 0xa0000 and 0xc0000 */ | |
718 | static void vga_mem_writeb(uint32_t addr, uint32_t val, uint32_t vaddr) | |
719 | { | |
720 | VGAState *s = &vga_state; | |
721 | int memory_map_mode, plane, write_mode, b, func_select; | |
722 | uint32_t write_mask, bit_mask, set_mask; | |
723 | ||
724 | #ifdef DEBUG_VGA_MEM | |
725 | printf("vga: [0x%x] = 0x%02x\n", addr, val); | |
726 | #endif | |
727 | /* convert to VGA memory offset */ | |
728 | memory_map_mode = (s->gr[6] >> 2) & 3; | |
729 | switch(memory_map_mode) { | |
730 | case 0: | |
731 | addr -= 0xa0000; | |
732 | break; | |
733 | case 1: | |
734 | if (addr >= 0xb0000) | |
735 | return; | |
736 | addr += s->bank_offset; | |
737 | break; | |
738 | case 2: | |
739 | addr -= 0xb0000; | |
740 | if (addr >= 0x8000) | |
741 | return; | |
742 | break; | |
743 | default: | |
744 | case 3: | |
745 | addr -= 0xb8000; | |
746 | if (addr >= 0x8000) | |
747 | return; | |
748 | break; | |
749 | } | |
750 | ||
751 | if (s->sr[4] & 0x08) { | |
752 | /* chain 4 mode : simplest access */ | |
753 | plane = addr & 3; | |
754 | if (s->sr[2] & (1 << plane)) { | |
755 | s->vram_ptr[addr] = val; | |
756 | #ifdef DEBUG_VGA_MEM | |
757 | printf("vga: chain4: [0x%x]\n", addr); | |
758 | #endif | |
759 | cpu_physical_memory_set_dirty(s->vram_offset + addr); | |
760 | } | |
761 | } else if (s->gr[5] & 0x10) { | |
762 | /* odd/even mode (aka text mode mapping) */ | |
763 | plane = (s->gr[4] & 2) | (addr & 1); | |
764 | if (s->sr[2] & (1 << plane)) { | |
765 | addr = ((addr & ~1) << 1) | plane; | |
766 | s->vram_ptr[addr] = val; | |
767 | #ifdef DEBUG_VGA_MEM | |
768 | printf("vga: odd/even: [0x%x]\n", addr); | |
769 | #endif | |
770 | cpu_physical_memory_set_dirty(s->vram_offset + addr); | |
771 | } | |
772 | } else { | |
773 | /* standard VGA latched access */ | |
774 | write_mode = s->gr[5] & 3; | |
775 | switch(write_mode) { | |
776 | default: | |
777 | case 0: | |
778 | /* rotate */ | |
779 | b = s->gr[3] & 7; | |
780 | val = ((val >> b) | (val << (8 - b))) & 0xff; | |
781 | val |= val << 8; | |
782 | val |= val << 16; | |
783 | ||
784 | /* apply set/reset mask */ | |
785 | set_mask = mask16[s->gr[1]]; | |
786 | val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask); | |
787 | bit_mask = s->gr[8]; | |
788 | break; | |
789 | case 1: | |
790 | val = s->latch; | |
791 | goto do_write; | |
792 | case 2: | |
793 | val = mask16[val & 0x0f]; | |
794 | bit_mask = s->gr[8]; | |
795 | break; | |
796 | case 3: | |
797 | /* rotate */ | |
798 | b = s->gr[3] & 7; | |
799 | val = (val >> b) | (val << (8 - b)); | |
800 | ||
801 | bit_mask = s->gr[8] & val; | |
802 | val = mask16[s->gr[0]]; | |
803 | break; | |
804 | } | |
805 | ||
806 | /* apply logical operation */ | |
807 | func_select = s->gr[3] >> 3; | |
808 | switch(func_select) { | |
809 | case 0: | |
810 | default: | |
811 | /* nothing to do */ | |
812 | break; | |
813 | case 1: | |
814 | /* and */ | |
815 | val &= s->latch; | |
816 | break; | |
817 | case 2: | |
818 | /* or */ | |
819 | val |= s->latch; | |
820 | break; | |
821 | case 3: | |
822 | /* xor */ | |
823 | val ^= s->latch; | |
824 | break; | |
825 | } | |
826 | ||
827 | /* apply bit mask */ | |
828 | bit_mask |= bit_mask << 8; | |
829 | bit_mask |= bit_mask << 16; | |
830 | val = (val & bit_mask) | (s->latch & ~bit_mask); | |
831 | ||
832 | do_write: | |
833 | /* mask data according to sr[2] */ | |
834 | write_mask = mask16[s->sr[2]]; | |
835 | ((uint32_t *)s->vram_ptr)[addr] = | |
836 | (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | | |
837 | (val & write_mask); | |
838 | #ifdef DEBUG_VGA_MEM | |
839 | printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n", | |
840 | addr * 4, write_mask, val); | |
841 | #endif | |
842 | cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2)); | |
843 | } | |
844 | } | |
845 | ||
846 | static void vga_mem_writew(uint32_t addr, uint32_t val, uint32_t vaddr) | |
847 | { | |
848 | vga_mem_writeb(addr, val & 0xff, vaddr); | |
849 | vga_mem_writeb(addr + 1, (val >> 8) & 0xff, vaddr); | |
850 | } | |
851 | ||
852 | static void vga_mem_writel(uint32_t addr, uint32_t val, uint32_t vaddr) | |
853 | { | |
854 | vga_mem_writeb(addr, val & 0xff, vaddr); | |
855 | vga_mem_writeb(addr + 1, (val >> 8) & 0xff, vaddr); | |
856 | vga_mem_writeb(addr + 2, (val >> 16) & 0xff, vaddr); | |
857 | vga_mem_writeb(addr + 3, (val >> 24) & 0xff, vaddr); | |
858 | } | |
859 | ||
860 | typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, | |
861 | const uint8_t *font_ptr, int h, | |
862 | uint32_t fgcol, uint32_t bgcol); | |
863 | typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, | |
864 | const uint8_t *font_ptr, int h, | |
865 | uint32_t fgcol, uint32_t bgcol, int dup9); | |
866 | typedef void vga_draw_line_func(VGAState *s1, uint8_t *d, | |
867 | const uint8_t *s, int width); | |
868 | ||
869 | static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b) | |
870 | { | |
871 | /* XXX: TODO */ | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b) | |
876 | { | |
877 | return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3); | |
878 | } | |
879 | ||
880 | static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b) | |
881 | { | |
882 | return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3); | |
883 | } | |
884 | ||
885 | static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b) | |
886 | { | |
887 | return (r << 16) | (g << 8) | b; | |
888 | } | |
889 | ||
890 | #define DEPTH 8 | |
891 | #include "vga_template.h" | |
892 | ||
893 | #define DEPTH 15 | |
894 | #include "vga_template.h" | |
895 | ||
896 | #define DEPTH 16 | |
897 | #include "vga_template.h" | |
898 | ||
899 | #define DEPTH 32 | |
900 | #include "vga_template.h" | |
901 | ||
902 | static inline int c6_to_8(int v) | |
903 | { | |
904 | int b; | |
905 | v &= 0x3f; | |
906 | b = v & 1; | |
907 | return (v << 2) | (b << 1) | b; | |
908 | } | |
909 | ||
910 | static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) | |
911 | { | |
912 | unsigned int col; | |
913 | col = rgb_to_pixel8(r, g, b); | |
914 | col |= col << 8; | |
915 | col |= col << 16; | |
916 | return col; | |
917 | } | |
918 | ||
919 | static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) | |
920 | { | |
921 | unsigned int col; | |
922 | col = rgb_to_pixel15(r, g, b); | |
923 | col |= col << 16; | |
924 | return col; | |
925 | } | |
926 | ||
927 | static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) | |
928 | { | |
929 | unsigned int col; | |
930 | col = rgb_to_pixel16(r, g, b); | |
931 | col |= col << 16; | |
932 | return col; | |
933 | } | |
934 | ||
935 | static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) | |
936 | { | |
937 | unsigned int col; | |
938 | col = rgb_to_pixel32(r, g, b); | |
939 | return col; | |
940 | } | |
941 | ||
942 | /* return true if the palette was modified */ | |
943 | static int update_palette16(VGAState *s) | |
944 | { | |
945 | int full_update, i; | |
946 | uint32_t v, col, *palette; | |
947 | ||
948 | full_update = 0; | |
949 | palette = s->last_palette; | |
950 | for(i = 0; i < 16; i++) { | |
951 | v = s->ar[i]; | |
952 | if (s->ar[0x10] & 0x80) | |
953 | v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf); | |
954 | else | |
955 | v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f); | |
956 | v = v * 3; | |
957 | col = s->rgb_to_pixel(c6_to_8(s->palette[v]), | |
958 | c6_to_8(s->palette[v + 1]), | |
959 | c6_to_8(s->palette[v + 2])); | |
960 | if (col != palette[i]) { | |
961 | full_update = 1; | |
962 | palette[i] = col; | |
963 | } | |
964 | } | |
965 | return full_update; | |
966 | } | |
967 | ||
968 | /* return true if the palette was modified */ | |
969 | static int update_palette256(VGAState *s) | |
970 | { | |
971 | int full_update, i; | |
972 | uint32_t v, col, *palette; | |
973 | ||
974 | full_update = 0; | |
975 | palette = s->last_palette; | |
976 | v = 0; | |
977 | for(i = 0; i < 256; i++) { | |
978 | col = s->rgb_to_pixel(c6_to_8(s->palette[v]), | |
979 | c6_to_8(s->palette[v + 1]), | |
980 | c6_to_8(s->palette[v + 2])); | |
981 | if (col != palette[i]) { | |
982 | full_update = 1; | |
983 | palette[i] = col; | |
984 | } | |
985 | v += 3; | |
986 | } | |
987 | return full_update; | |
988 | } | |
989 | ||
990 | /* update start_addr and line_offset. Return TRUE if modified */ | |
991 | static int update_basic_params(VGAState *s) | |
992 | { | |
993 | int full_update; | |
994 | uint32_t start_addr, line_offset, line_compare, v; | |
995 | ||
996 | full_update = 0; | |
997 | ||
998 | #ifdef CONFIG_BOCHS_VBE | |
999 | if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { | |
1000 | line_offset = s->vbe_line_offset; | |
1001 | start_addr = s->vbe_start_addr; | |
1002 | } else | |
1003 | #endif | |
1004 | { | |
1005 | /* compute line_offset in bytes */ | |
1006 | line_offset = s->cr[0x13]; | |
1007 | #ifdef CONFIG_S3VGA | |
1008 | v = (s->cr[0x51] >> 4) & 3; /* S3 extension */ | |
1009 | if (v == 0) | |
1010 | v = (s->cr[0x43] >> 2) & 1; /* S3 extension */ | |
1011 | line_offset |= (v << 8); | |
1012 | #endif | |
1013 | line_offset <<= 3; | |
1014 | ||
1015 | /* starting address */ | |
1016 | start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8); | |
1017 | #ifdef CONFIG_S3VGA | |
1018 | start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */ | |
1019 | #endif | |
1020 | } | |
1021 | ||
1022 | /* line compare */ | |
1023 | line_compare = s->cr[0x18] | | |
1024 | ((s->cr[0x07] & 0x10) << 4) | | |
1025 | ((s->cr[0x09] & 0x40) << 3); | |
1026 | ||
1027 | if (line_offset != s->line_offset || | |
1028 | start_addr != s->start_addr || | |
1029 | line_compare != s->line_compare) { | |
1030 | s->line_offset = line_offset; | |
1031 | s->start_addr = start_addr; | |
1032 | s->line_compare = line_compare; | |
1033 | full_update = 1; | |
1034 | } | |
1035 | return full_update; | |
1036 | } | |
1037 | ||
1038 | static inline int get_depth_index(int depth) | |
1039 | { | |
1040 | switch(depth) { | |
1041 | default: | |
1042 | case 8: | |
1043 | return 0; | |
1044 | case 15: | |
1045 | return 1; | |
1046 | case 16: | |
1047 | return 2; | |
1048 | case 32: | |
1049 | return 3; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = { | |
1054 | vga_draw_glyph8_8, | |
1055 | vga_draw_glyph8_16, | |
1056 | vga_draw_glyph8_16, | |
1057 | vga_draw_glyph8_32, | |
1058 | }; | |
1059 | ||
1060 | static vga_draw_glyph8_func *vga_draw_glyph16_table[4] = { | |
1061 | vga_draw_glyph16_8, | |
1062 | vga_draw_glyph16_16, | |
1063 | vga_draw_glyph16_16, | |
1064 | vga_draw_glyph16_32, | |
1065 | }; | |
1066 | ||
1067 | static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = { | |
1068 | vga_draw_glyph9_8, | |
1069 | vga_draw_glyph9_16, | |
1070 | vga_draw_glyph9_16, | |
1071 | vga_draw_glyph9_32, | |
1072 | }; | |
1073 | ||
1074 | static const uint8_t cursor_glyph[32 * 4] = { | |
1075 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1076 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1077 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1078 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1079 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1080 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1081 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1082 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1083 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1084 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1085 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1086 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1087 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1088 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1089 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1090 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
1091 | }; | |
1092 | ||
1093 | /* | |
1094 | * Text mode update | |
1095 | * Missing: | |
1096 | * - double scan | |
1097 | * - double width | |
1098 | * - underline | |
1099 | * - flashing | |
1100 | */ | |
1101 | static void vga_draw_text(VGAState *s, int full_update) | |
1102 | { | |
1103 | int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr; | |
1104 | int cx_min, cx_max, linesize, x_incr; | |
1105 | uint32_t offset, fgcol, bgcol, v, cursor_offset; | |
1106 | uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr; | |
1107 | const uint8_t *font_ptr, *font_base[2]; | |
1108 | int dup9, line_offset, depth_index; | |
1109 | uint32_t *palette; | |
1110 | uint32_t *ch_attr_ptr; | |
1111 | vga_draw_glyph8_func *vga_draw_glyph8; | |
1112 | vga_draw_glyph9_func *vga_draw_glyph9; | |
1113 | ||
1114 | full_update |= update_palette16(s); | |
1115 | palette = s->last_palette; | |
1116 | ||
1117 | /* compute font data address (in plane 2) */ | |
1118 | v = s->sr[3]; | |
1119 | offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; | |
1120 | if (offset != s->font_offsets[0]) { | |
1121 | s->font_offsets[0] = offset; | |
1122 | full_update = 1; | |
1123 | } | |
1124 | font_base[0] = s->vram_ptr + offset; | |
1125 | ||
1126 | offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; | |
1127 | font_base[1] = s->vram_ptr + offset; | |
1128 | if (offset != s->font_offsets[1]) { | |
1129 | s->font_offsets[1] = offset; | |
1130 | full_update = 1; | |
1131 | } | |
1132 | ||
1133 | full_update |= update_basic_params(s); | |
1134 | ||
1135 | line_offset = s->line_offset; | |
1136 | s1 = s->vram_ptr + (s->start_addr * 4); | |
1137 | ||
1138 | /* total width & height */ | |
1139 | cheight = (s->cr[9] & 0x1f) + 1; | |
1140 | cw = 8; | |
1141 | if (!(s->sr[1] & 0x01)) | |
1142 | cw = 9; | |
1143 | if (s->sr[1] & 0x08) | |
1144 | cw = 16; /* NOTE: no 18 pixel wide */ | |
1145 | x_incr = cw * ((s->ds->depth + 7) >> 3); | |
1146 | width = (s->cr[0x01] + 1); | |
1147 | if (s->cr[0x06] == 100) { | |
1148 | /* ugly hack for CGA 160x100x16 - explain me the logic */ | |
1149 | height = 100; | |
1150 | } else { | |
1151 | height = s->cr[0x12] | | |
1152 | ((s->cr[0x07] & 0x02) << 7) | | |
1153 | ((s->cr[0x07] & 0x40) << 3); | |
1154 | height = (height + 1) / cheight; | |
1155 | } | |
1156 | if (width != s->last_width || height != s->last_height || | |
1157 | cw != s->last_cw || cheight != s->last_ch) { | |
1158 | dpy_resize(s->ds, width * cw, height * cheight); | |
1159 | s->last_width = width; | |
1160 | s->last_height = height; | |
1161 | s->last_ch = cheight; | |
1162 | s->last_cw = cw; | |
1163 | full_update = 1; | |
1164 | } | |
1165 | cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; | |
1166 | if (cursor_offset != s->cursor_offset || | |
1167 | s->cr[0xa] != s->cursor_start || | |
1168 | s->cr[0xb] != s->cursor_end) { | |
1169 | /* if the cursor position changed, we update the old and new | |
1170 | chars */ | |
1171 | if (s->cursor_offset < CH_ATTR_SIZE) | |
1172 | s->last_ch_attr[s->cursor_offset] = -1; | |
1173 | if (cursor_offset < CH_ATTR_SIZE) | |
1174 | s->last_ch_attr[cursor_offset] = -1; | |
1175 | s->cursor_offset = cursor_offset; | |
1176 | s->cursor_start = s->cr[0xa]; | |
1177 | s->cursor_end = s->cr[0xb]; | |
1178 | } | |
1179 | cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4; | |
1180 | ||
1181 | depth_index = get_depth_index(s->ds->depth); | |
1182 | if (cw == 16) | |
1183 | vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; | |
1184 | else | |
1185 | vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; | |
1186 | vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; | |
1187 | ||
1188 | dest = s->ds->data; | |
1189 | linesize = s->ds->linesize; | |
1190 | ch_attr_ptr = s->last_ch_attr; | |
1191 | for(cy = 0; cy < height; cy++) { | |
1192 | d1 = dest; | |
1193 | src = s1; | |
1194 | cx_min = width; | |
1195 | cx_max = -1; | |
1196 | for(cx = 0; cx < width; cx++) { | |
1197 | ch_attr = *(uint16_t *)src; | |
1198 | if (full_update || ch_attr != *ch_attr_ptr) { | |
1199 | if (cx < cx_min) | |
1200 | cx_min = cx; | |
1201 | if (cx > cx_max) | |
1202 | cx_max = cx; | |
1203 | *ch_attr_ptr = ch_attr; | |
1204 | #ifdef WORDS_BIGENDIAN | |
1205 | ch = ch_attr >> 8; | |
1206 | cattr = ch_attr & 0xff; | |
1207 | #else | |
1208 | ch = ch_attr & 0xff; | |
1209 | cattr = ch_attr >> 8; | |
1210 | #endif | |
1211 | font_ptr = font_base[(cattr >> 3) & 1]; | |
1212 | font_ptr += 32 * 4 * ch; | |
1213 | bgcol = palette[cattr >> 4]; | |
1214 | fgcol = palette[cattr & 0x0f]; | |
1215 | if (cw != 9) { | |
1216 | vga_draw_glyph8(d1, linesize, | |
1217 | font_ptr, cheight, fgcol, bgcol); | |
1218 | } else { | |
1219 | dup9 = 0; | |
1220 | if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04)) | |
1221 | dup9 = 1; | |
1222 | vga_draw_glyph9(d1, linesize, | |
1223 | font_ptr, cheight, fgcol, bgcol, dup9); | |
1224 | } | |
1225 | if (src == cursor_ptr && | |
1226 | !(s->cr[0x0a] & 0x20)) { | |
1227 | int line_start, line_last, h; | |
1228 | /* draw the cursor */ | |
1229 | line_start = s->cr[0x0a] & 0x1f; | |
1230 | line_last = s->cr[0x0b] & 0x1f; | |
1231 | /* XXX: check that */ | |
1232 | if (line_last > cheight - 1) | |
1233 | line_last = cheight - 1; | |
1234 | if (line_last >= line_start && line_start < cheight) { | |
1235 | h = line_last - line_start + 1; | |
1236 | d = d1 + linesize * line_start; | |
1237 | if (cw != 9) { | |
1238 | vga_draw_glyph8(d, linesize, | |
1239 | cursor_glyph, h, fgcol, bgcol); | |
1240 | } else { | |
1241 | vga_draw_glyph9(d, linesize, | |
1242 | cursor_glyph, h, fgcol, bgcol, 1); | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | d1 += x_incr; | |
1248 | src += 4; | |
1249 | ch_attr_ptr++; | |
1250 | } | |
1251 | if (cx_max != -1) { | |
1252 | dpy_update(s->ds, cx_min * cw, cy * cheight, | |
1253 | (cx_max - cx_min + 1) * cw, cheight); | |
1254 | } | |
1255 | dest += linesize * cheight; | |
1256 | s1 += line_offset; | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | enum { | |
1261 | VGA_DRAW_LINE2, | |
1262 | VGA_DRAW_LINE2D2, | |
1263 | VGA_DRAW_LINE4, | |
1264 | VGA_DRAW_LINE4D2, | |
1265 | VGA_DRAW_LINE8D2, | |
1266 | VGA_DRAW_LINE8, | |
1267 | VGA_DRAW_LINE15, | |
1268 | VGA_DRAW_LINE16, | |
1269 | VGA_DRAW_LINE24, | |
1270 | VGA_DRAW_LINE32, | |
1271 | VGA_DRAW_LINE_NB, | |
1272 | }; | |
1273 | ||
1274 | static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = { | |
1275 | vga_draw_line2_8, | |
1276 | vga_draw_line2_16, | |
1277 | vga_draw_line2_16, | |
1278 | vga_draw_line2_32, | |
1279 | ||
1280 | vga_draw_line2d2_8, | |
1281 | vga_draw_line2d2_16, | |
1282 | vga_draw_line2d2_16, | |
1283 | vga_draw_line2d2_32, | |
1284 | ||
1285 | vga_draw_line4_8, | |
1286 | vga_draw_line4_16, | |
1287 | vga_draw_line4_16, | |
1288 | vga_draw_line4_32, | |
1289 | ||
1290 | vga_draw_line4d2_8, | |
1291 | vga_draw_line4d2_16, | |
1292 | vga_draw_line4d2_16, | |
1293 | vga_draw_line4d2_32, | |
1294 | ||
1295 | vga_draw_line8d2_8, | |
1296 | vga_draw_line8d2_16, | |
1297 | vga_draw_line8d2_16, | |
1298 | vga_draw_line8d2_32, | |
1299 | ||
1300 | vga_draw_line8_8, | |
1301 | vga_draw_line8_16, | |
1302 | vga_draw_line8_16, | |
1303 | vga_draw_line8_32, | |
1304 | ||
1305 | vga_draw_line15_8, | |
1306 | vga_draw_line15_15, | |
1307 | vga_draw_line15_16, | |
1308 | vga_draw_line15_32, | |
1309 | ||
1310 | vga_draw_line16_8, | |
1311 | vga_draw_line16_15, | |
1312 | vga_draw_line16_16, | |
1313 | vga_draw_line16_32, | |
1314 | ||
1315 | vga_draw_line24_8, | |
1316 | vga_draw_line24_15, | |
1317 | vga_draw_line24_16, | |
1318 | vga_draw_line24_32, | |
1319 | ||
1320 | vga_draw_line32_8, | |
1321 | vga_draw_line32_15, | |
1322 | vga_draw_line32_16, | |
1323 | vga_draw_line32_32, | |
1324 | }; | |
1325 | ||
1326 | /* | |
1327 | * graphic modes | |
1328 | * Missing: | |
1329 | * - double scan | |
1330 | * - double width | |
1331 | */ | |
1332 | static void vga_draw_graphic(VGAState *s, int full_update) | |
1333 | { | |
1334 | int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask; | |
1335 | int width, height, shift_control, line_offset, page0, page1, bwidth; | |
1336 | int disp_width, multi_scan, multi_run; | |
1337 | uint8_t *d; | |
1338 | uint32_t v, addr1, addr; | |
1339 | vga_draw_line_func *vga_draw_line; | |
1340 | ||
1341 | full_update |= update_basic_params(s); | |
1342 | ||
1343 | width = (s->cr[0x01] + 1) * 8; | |
1344 | height = s->cr[0x12] | | |
1345 | ((s->cr[0x07] & 0x02) << 7) | | |
1346 | ((s->cr[0x07] & 0x40) << 3); | |
1347 | height = (height + 1); | |
1348 | disp_width = width; | |
1349 | ||
1350 | shift_control = (s->gr[0x05] >> 5) & 3; | |
1351 | double_scan = (s->cr[0x09] & 0x80); | |
1352 | if (shift_control > 1) { | |
1353 | multi_scan = (s->cr[0x09] & 0x1f); | |
1354 | } else { | |
1355 | multi_scan = 0; | |
1356 | } | |
1357 | multi_run = multi_scan; | |
1358 | if (shift_control != s->shift_control || | |
1359 | double_scan != s->double_scan) { | |
1360 | full_update = 1; | |
1361 | s->shift_control = shift_control; | |
1362 | s->double_scan = double_scan; | |
1363 | } | |
1364 | ||
1365 | if (shift_control == 0) { | |
1366 | full_update |= update_palette16(s); | |
1367 | if (s->sr[0x01] & 8) { | |
1368 | v = VGA_DRAW_LINE4D2; | |
1369 | disp_width <<= 1; | |
1370 | } else { | |
1371 | v = VGA_DRAW_LINE4; | |
1372 | } | |
1373 | } else if (shift_control == 1) { | |
1374 | full_update |= update_palette16(s); | |
1375 | if (s->sr[0x01] & 8) { | |
1376 | v = VGA_DRAW_LINE2D2; | |
1377 | disp_width <<= 1; | |
1378 | } else { | |
1379 | v = VGA_DRAW_LINE2; | |
1380 | } | |
1381 | } else { | |
1382 | #ifdef CONFIG_BOCHS_VBE | |
1383 | if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { | |
1384 | switch(s->vbe_regs[VBE_DISPI_INDEX_BPP]) { | |
1385 | default: | |
1386 | case 8: | |
1387 | full_update |= update_palette256(s); | |
1388 | v = VGA_DRAW_LINE8; | |
1389 | break; | |
1390 | case 15: | |
1391 | v = VGA_DRAW_LINE15; | |
1392 | break; | |
1393 | case 16: | |
1394 | v = VGA_DRAW_LINE16; | |
1395 | break; | |
1396 | case 24: | |
1397 | v = VGA_DRAW_LINE24; | |
1398 | break; | |
1399 | case 32: | |
1400 | v = VGA_DRAW_LINE32; | |
1401 | break; | |
1402 | } | |
1403 | } else | |
1404 | #endif | |
1405 | { | |
1406 | full_update |= update_palette256(s); | |
1407 | v = VGA_DRAW_LINE8D2; | |
1408 | } | |
1409 | } | |
1410 | vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)]; | |
1411 | ||
1412 | if (disp_width != s->last_width || | |
1413 | height != s->last_height) { | |
1414 | dpy_resize(s->ds, disp_width, height); | |
1415 | s->last_width = disp_width; | |
1416 | s->last_height = height; | |
1417 | full_update = 1; | |
1418 | } | |
1419 | ||
1420 | line_offset = s->line_offset; | |
1421 | #if 0 | |
1422 | printf("w=%d h=%d v=%d line_offset=%d double_scan=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=%02x\n", | |
1423 | width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]); | |
1424 | #endif | |
1425 | addr1 = (s->start_addr * 4); | |
1426 | bwidth = width * 4; | |
1427 | y_start = -1; | |
1428 | page_min = 0x7fffffff; | |
1429 | page_max = -1; | |
1430 | d = s->ds->data; | |
1431 | linesize = s->ds->linesize; | |
1432 | y1 = 0; | |
1433 | for(y = 0; y < height; y++) { | |
1434 | addr = addr1; | |
1435 | if (!(s->cr[0x17] & 1)) { | |
1436 | int shift; | |
1437 | /* CGA compatibility handling */ | |
1438 | shift = 14 + ((s->cr[0x17] >> 6) & 1); | |
1439 | addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); | |
1440 | } | |
1441 | if (!(s->cr[0x17] & 2)) { | |
1442 | addr = (addr & ~0x8000) | ((y1 & 2) << 14); | |
1443 | } | |
1444 | page0 = s->vram_offset + (addr & TARGET_PAGE_MASK); | |
1445 | page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK); | |
1446 | update = full_update | cpu_physical_memory_is_dirty(page0) | | |
1447 | cpu_physical_memory_is_dirty(page1); | |
1448 | if ((page1 - page0) > TARGET_PAGE_SIZE) { | |
1449 | /* if wide line, can use another page */ | |
1450 | update |= cpu_physical_memory_is_dirty(page0 + TARGET_PAGE_SIZE); | |
1451 | } | |
1452 | if (update) { | |
1453 | if (y_start < 0) | |
1454 | y_start = y; | |
1455 | if (page0 < page_min) | |
1456 | page_min = page0; | |
1457 | if (page1 > page_max) | |
1458 | page_max = page1; | |
1459 | vga_draw_line(s, d, s->vram_ptr + addr, width); | |
1460 | } else { | |
1461 | if (y_start >= 0) { | |
1462 | /* flush to display */ | |
1463 | dpy_update(s->ds, 0, y_start, | |
1464 | disp_width, y - y_start); | |
1465 | y_start = -1; | |
1466 | } | |
1467 | } | |
1468 | if (!multi_run) { | |
1469 | if (!double_scan || (y & 1) != 0) { | |
1470 | if (y1 == s->line_compare) { | |
1471 | addr1 = 0; | |
1472 | } else { | |
1473 | mask = (s->cr[0x17] & 3) ^ 3; | |
1474 | if ((y1 & mask) == mask) | |
1475 | addr1 += line_offset; | |
1476 | } | |
1477 | y1++; | |
1478 | } | |
1479 | multi_run = multi_scan; | |
1480 | } else { | |
1481 | multi_run--; | |
1482 | y1++; | |
1483 | } | |
1484 | d += linesize; | |
1485 | } | |
1486 | if (y_start >= 0) { | |
1487 | /* flush to display */ | |
1488 | dpy_update(s->ds, 0, y_start, | |
1489 | disp_width, y - y_start); | |
1490 | } | |
1491 | /* reset modified pages */ | |
1492 | if (page_max != -1) { | |
1493 | cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE); | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | void vga_update_display(void) | |
1498 | { | |
1499 | VGAState *s = &vga_state; | |
1500 | int full_update, graphic_mode; | |
1501 | ||
1502 | if (s->ds->depth == 0) { | |
1503 | /* nothing to do */ | |
1504 | } else { | |
1505 | switch(s->ds->depth) { | |
1506 | case 8: | |
1507 | s->rgb_to_pixel = rgb_to_pixel8_dup; | |
1508 | break; | |
1509 | case 15: | |
1510 | s->rgb_to_pixel = rgb_to_pixel15_dup; | |
1511 | break; | |
1512 | default: | |
1513 | case 16: | |
1514 | s->rgb_to_pixel = rgb_to_pixel16_dup; | |
1515 | break; | |
1516 | case 32: | |
1517 | s->rgb_to_pixel = rgb_to_pixel32_dup; | |
1518 | break; | |
1519 | } | |
1520 | ||
1521 | full_update = 0; | |
1522 | graphic_mode = s->gr[6] & 1; | |
1523 | if (graphic_mode != s->graphic_mode) { | |
1524 | s->graphic_mode = graphic_mode; | |
1525 | full_update = 1; | |
1526 | } | |
1527 | if (graphic_mode) | |
1528 | vga_draw_graphic(s, full_update); | |
1529 | else | |
1530 | vga_draw_text(s, full_update); | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | static void vga_reset(VGAState *s) | |
1535 | { | |
1536 | memset(s, 0, sizeof(VGAState)); | |
1537 | #ifdef CONFIG_S3VGA | |
1538 | /* chip ID for 8c968 */ | |
1539 | s->cr[0x2d] = 0x88; | |
1540 | s->cr[0x2e] = 0xb0; | |
1541 | s->cr[0x2f] = 0x01; /* XXX: check revision code */ | |
1542 | s->cr[0x30] = 0xe1; | |
1543 | #endif | |
1544 | s->graphic_mode = -1; /* force full update */ | |
1545 | } | |
1546 | ||
1547 | static CPUReadMemoryFunc *vga_mem_read[3] = { | |
1548 | vga_mem_readb, | |
1549 | vga_mem_readw, | |
1550 | vga_mem_readl, | |
1551 | }; | |
1552 | ||
1553 | static CPUWriteMemoryFunc *vga_mem_write[3] = { | |
1554 | vga_mem_writeb, | |
1555 | vga_mem_writew, | |
1556 | vga_mem_writel, | |
1557 | }; | |
1558 | ||
1559 | static void vga_save(QEMUFile *f, void *opaque) | |
1560 | { | |
1561 | VGAState *s = opaque; | |
1562 | int i; | |
1563 | ||
1564 | qemu_put_be32s(f, &s->latch); | |
1565 | qemu_put_8s(f, &s->sr_index); | |
1566 | qemu_put_buffer(f, s->sr, 8); | |
1567 | qemu_put_8s(f, &s->gr_index); | |
1568 | qemu_put_buffer(f, s->gr, 16); | |
1569 | qemu_put_8s(f, &s->ar_index); | |
1570 | qemu_put_buffer(f, s->ar, 21); | |
1571 | qemu_put_be32s(f, &s->ar_flip_flop); | |
1572 | qemu_put_8s(f, &s->cr_index); | |
1573 | qemu_put_buffer(f, s->cr, 256); | |
1574 | qemu_put_8s(f, &s->msr); | |
1575 | qemu_put_8s(f, &s->fcr); | |
1576 | qemu_put_8s(f, &s->st00); | |
1577 | qemu_put_8s(f, &s->st01); | |
1578 | ||
1579 | qemu_put_8s(f, &s->dac_state); | |
1580 | qemu_put_8s(f, &s->dac_sub_index); | |
1581 | qemu_put_8s(f, &s->dac_read_index); | |
1582 | qemu_put_8s(f, &s->dac_write_index); | |
1583 | qemu_put_buffer(f, s->dac_cache, 3); | |
1584 | qemu_put_buffer(f, s->palette, 768); | |
1585 | ||
1586 | qemu_put_be32s(f, &s->bank_offset); | |
1587 | #ifdef CONFIG_BOCHS_VBE | |
1588 | qemu_put_byte(f, 1); | |
1589 | qemu_put_be16s(f, &s->vbe_index); | |
1590 | for(i = 0; i < VBE_DISPI_INDEX_NB; i++) | |
1591 | qemu_put_be16s(f, &s->vbe_regs[i]); | |
1592 | qemu_put_be32s(f, &s->vbe_start_addr); | |
1593 | qemu_put_be32s(f, &s->vbe_line_offset); | |
1594 | qemu_put_be32s(f, &s->vbe_bank_mask); | |
1595 | #else | |
1596 | qemu_put_byte(f, 0); | |
1597 | #endif | |
1598 | } | |
1599 | ||
1600 | static int vga_load(QEMUFile *f, void *opaque, int version_id) | |
1601 | { | |
1602 | VGAState *s = opaque; | |
1603 | int is_vbe, i; | |
1604 | ||
1605 | if (version_id != 1) | |
1606 | return -EINVAL; | |
1607 | ||
1608 | qemu_get_be32s(f, &s->latch); | |
1609 | qemu_get_8s(f, &s->sr_index); | |
1610 | qemu_get_buffer(f, s->sr, 8); | |
1611 | qemu_get_8s(f, &s->gr_index); | |
1612 | qemu_get_buffer(f, s->gr, 16); | |
1613 | qemu_get_8s(f, &s->ar_index); | |
1614 | qemu_get_buffer(f, s->ar, 21); | |
1615 | qemu_get_be32s(f, &s->ar_flip_flop); | |
1616 | qemu_get_8s(f, &s->cr_index); | |
1617 | qemu_get_buffer(f, s->cr, 256); | |
1618 | qemu_get_8s(f, &s->msr); | |
1619 | qemu_get_8s(f, &s->fcr); | |
1620 | qemu_get_8s(f, &s->st00); | |
1621 | qemu_get_8s(f, &s->st01); | |
1622 | ||
1623 | qemu_get_8s(f, &s->dac_state); | |
1624 | qemu_get_8s(f, &s->dac_sub_index); | |
1625 | qemu_get_8s(f, &s->dac_read_index); | |
1626 | qemu_get_8s(f, &s->dac_write_index); | |
1627 | qemu_get_buffer(f, s->dac_cache, 3); | |
1628 | qemu_get_buffer(f, s->palette, 768); | |
1629 | ||
1630 | qemu_get_be32s(f, &s->bank_offset); | |
1631 | is_vbe = qemu_get_byte(f); | |
1632 | #ifdef CONFIG_BOCHS_VBE | |
1633 | if (!is_vbe) | |
1634 | return -EINVAL; | |
1635 | qemu_get_be16s(f, &s->vbe_index); | |
1636 | for(i = 0; i < VBE_DISPI_INDEX_NB; i++) | |
1637 | qemu_get_be16s(f, &s->vbe_regs[i]); | |
1638 | qemu_get_be32s(f, &s->vbe_start_addr); | |
1639 | qemu_get_be32s(f, &s->vbe_line_offset); | |
1640 | qemu_get_be32s(f, &s->vbe_bank_mask); | |
1641 | #else | |
1642 | if (is_vbe) | |
1643 | return -EINVAL; | |
1644 | #endif | |
1645 | ||
1646 | /* force refresh */ | |
1647 | s->graphic_mode = -1; | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base, | |
1652 | unsigned long vga_ram_offset, int vga_ram_size) | |
1653 | { | |
1654 | VGAState *s = &vga_state; | |
1655 | int i, j, v, b; | |
1656 | ||
1657 | for(i = 0;i < 256; i++) { | |
1658 | v = 0; | |
1659 | for(j = 0; j < 8; j++) { | |
1660 | v |= ((i >> j) & 1) << (j * 4); | |
1661 | } | |
1662 | expand4[i] = v; | |
1663 | ||
1664 | v = 0; | |
1665 | for(j = 0; j < 4; j++) { | |
1666 | v |= ((i >> (2 * j)) & 3) << (j * 4); | |
1667 | } | |
1668 | expand2[i] = v; | |
1669 | } | |
1670 | for(i = 0; i < 16; i++) { | |
1671 | v = 0; | |
1672 | for(j = 0; j < 4; j++) { | |
1673 | b = ((i >> j) & 1); | |
1674 | v |= b << (2 * j); | |
1675 | v |= b << (2 * j + 1); | |
1676 | } | |
1677 | expand4to8[i] = v; | |
1678 | } | |
1679 | ||
1680 | vga_reset(s); | |
1681 | ||
1682 | s->vram_ptr = vga_ram_base; | |
1683 | s->vram_offset = vga_ram_offset; | |
1684 | s->vram_size = vga_ram_size; | |
1685 | s->ds = ds; | |
1686 | ||
1687 | register_savevm("vga", 0, 1, vga_save, vga_load, s); | |
1688 | ||
1689 | register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s); | |
1690 | ||
1691 | register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s); | |
1692 | register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s); | |
1693 | register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s); | |
1694 | register_ioport_write(0x3da, 1, 1, vga_ioport_write, s); | |
1695 | ||
1696 | register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s); | |
1697 | ||
1698 | register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s); | |
1699 | register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s); | |
1700 | register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s); | |
1701 | register_ioport_read(0x3da, 1, 1, vga_ioport_read, s); | |
1702 | s->bank_offset = -0xa0000; | |
1703 | ||
1704 | #ifdef CONFIG_BOCHS_VBE | |
1705 | s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0; | |
1706 | s->vbe_bank_mask = ((s->vram_size >> 16) - 1); | |
1707 | register_ioport_read(0x1ce, 1, 2, vbe_ioport_read, s); | |
1708 | register_ioport_read(0x1cf, 1, 2, vbe_ioport_read, s); | |
1709 | ||
1710 | register_ioport_write(0x1ce, 1, 2, vbe_ioport_write, s); | |
1711 | register_ioport_write(0x1cf, 1, 2, vbe_ioport_write, s); | |
1712 | #endif | |
1713 | ||
1714 | vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write); | |
1715 | #if defined (TARGET_I386) | |
1716 | cpu_register_physical_memory(0x000a0000, 0x20000, vga_io_memory); | |
1717 | #ifdef CONFIG_BOCHS_VBE | |
1718 | /* XXX: use optimized standard vga accesses */ | |
1719 | cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS, | |
1720 | vga_ram_size, vga_ram_offset); | |
1721 | #endif | |
1722 | #elif defined (TARGET_PPC) | |
1723 | cpu_register_physical_memory(0xf00a0000, 0x20000, vga_io_memory); | |
1724 | #endif | |
1725 | return 0; | |
1726 | } | |
1727 | ||
1728 | /********************************************************/ | |
1729 | /* vga screen dump */ | |
1730 | ||
1731 | static int vga_save_w, vga_save_h; | |
1732 | ||
1733 | static void vga_save_dpy_update(DisplayState *s, | |
1734 | int x, int y, int w, int h) | |
1735 | { | |
1736 | } | |
1737 | ||
1738 | static void vga_save_dpy_resize(DisplayState *s, int w, int h) | |
1739 | { | |
1740 | s->linesize = w * 4; | |
1741 | s->data = qemu_malloc(h * s->linesize); | |
1742 | vga_save_w = w; | |
1743 | vga_save_h = h; | |
1744 | } | |
1745 | ||
1746 | static void vga_save_dpy_refresh(DisplayState *s) | |
1747 | { | |
1748 | } | |
1749 | ||
1750 | static int ppm_save(const char *filename, uint8_t *data, | |
1751 | int w, int h, int linesize) | |
1752 | { | |
1753 | FILE *f; | |
1754 | uint8_t *d, *d1; | |
1755 | unsigned int v; | |
1756 | int y, x; | |
1757 | ||
1758 | f = fopen(filename, "wb"); | |
1759 | if (!f) | |
1760 | return -1; | |
1761 | fprintf(f, "P6\n%d %d\n%d\n", | |
1762 | w, h, 255); | |
1763 | d1 = data; | |
1764 | for(y = 0; y < h; y++) { | |
1765 | d = d1; | |
1766 | for(x = 0; x < w; x++) { | |
1767 | v = *(uint32_t *)d; | |
1768 | fputc((v >> 16) & 0xff, f); | |
1769 | fputc((v >> 8) & 0xff, f); | |
1770 | fputc((v) & 0xff, f); | |
1771 | d += 4; | |
1772 | } | |
1773 | d1 += linesize; | |
1774 | } | |
1775 | fclose(f); | |
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | /* save the vga display in a PPM image even if no display is | |
1780 | available */ | |
1781 | void vga_screen_dump(const char *filename) | |
1782 | { | |
1783 | VGAState *s = &vga_state; | |
1784 | DisplayState *saved_ds, ds1, *ds = &ds1; | |
1785 | ||
1786 | /* XXX: this is a little hackish */ | |
1787 | s->last_width = -1; | |
1788 | s->last_height = -1; | |
1789 | saved_ds = s->ds; | |
1790 | ||
1791 | memset(ds, 0, sizeof(DisplayState)); | |
1792 | ds->dpy_update = vga_save_dpy_update; | |
1793 | ds->dpy_resize = vga_save_dpy_resize; | |
1794 | ds->dpy_refresh = vga_save_dpy_refresh; | |
1795 | ds->depth = 32; | |
1796 | ||
1797 | s->ds = ds; | |
1798 | s->graphic_mode = -1; | |
1799 | vga_update_display(); | |
1800 | ||
1801 | if (ds->data) { | |
1802 | ppm_save(filename, ds->data, vga_save_w, vga_save_h, | |
1803 | s->ds->linesize); | |
1804 | qemu_free(ds->data); | |
1805 | } | |
1806 | s->ds = saved_ds; | |
1807 | } |