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use AIO for DMA transfers - enabled DMA for CDROMs
[qemu.git] / hw / vga.c
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e89f66ec 1/*
4fa0f5d2 2 * QEMU VGA Emulator.
e89f66ec
FB		 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 */
e89f66ec 24#include "vl.h"
798b0c25 25#include "vga_int.h"
e89f66ec 26
e89f66ec 27//#define DEBUG_VGA
17b0018b 28//#define DEBUG_VGA_MEM
a41bc9af
FB		 29//#define DEBUG_VGA_REG
30
4fa0f5d2
FB		 31//#define DEBUG_BOCHS_VBE
32
e89f66ec 33/* force some bits to zero */
798b0c25 34const uint8_t sr_mask[8] = {
e89f66ec
FB		 35 (uint8_t)~0xfc,
36 (uint8_t)~0xc2,
37 (uint8_t)~0xf0,
38 (uint8_t)~0xc0,
39 (uint8_t)~0xf1,
40 (uint8_t)~0xff,
41 (uint8_t)~0xff,
42 (uint8_t)~0x00,
43};
44
798b0c25 45const uint8_t gr_mask[16] = {
e89f66ec
FB		 46 (uint8_t)~0xf0, /* 0x00 */
47 (uint8_t)~0xf0, /* 0x01 */
48 (uint8_t)~0xf0, /* 0x02 */
49 (uint8_t)~0xe0, /* 0x03 */
50 (uint8_t)~0xfc, /* 0x04 */
51 (uint8_t)~0x84, /* 0x05 */
52 (uint8_t)~0xf0, /* 0x06 */
53 (uint8_t)~0xf0, /* 0x07 */
54 (uint8_t)~0x00, /* 0x08 */
55 (uint8_t)~0xff, /* 0x09 */
56 (uint8_t)~0xff, /* 0x0a */
57 (uint8_t)~0xff, /* 0x0b */
58 (uint8_t)~0xff, /* 0x0c */
59 (uint8_t)~0xff, /* 0x0d */
60 (uint8_t)~0xff, /* 0x0e */
61 (uint8_t)~0xff, /* 0x0f */
62};
63
64#define cbswap_32(__x) \
65((uint32_t)( \
66 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
67 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
68 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
69 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
70
b8ed223b 71#ifdef WORDS_BIGENDIAN
e89f66ec
FB		 72#define PAT(x) cbswap_32(x)
73#else
74#define PAT(x) (x)
75#endif
76
b8ed223b
FB		 77#ifdef WORDS_BIGENDIAN
78#define BIG 1
79#else
80#define BIG 0
81#endif
82
83#ifdef WORDS_BIGENDIAN
84#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
85#else
86#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
87#endif
88
e89f66ec
FB		 89static const uint32_t mask16[16] = {
90 PAT(0x00000000),
91 PAT(0x000000ff),
92 PAT(0x0000ff00),
93 PAT(0x0000ffff),
94 PAT(0x00ff0000),
95 PAT(0x00ff00ff),
96 PAT(0x00ffff00),
97 PAT(0x00ffffff),
98 PAT(0xff000000),
99 PAT(0xff0000ff),
100 PAT(0xff00ff00),
101 PAT(0xff00ffff),
102 PAT(0xffff0000),
103 PAT(0xffff00ff),
104 PAT(0xffffff00),
105 PAT(0xffffffff),
106};
107
108#undef PAT
109
b8ed223b 110#ifdef WORDS_BIGENDIAN
e89f66ec
FB		 111#define PAT(x) (x)
112#else
113#define PAT(x) cbswap_32(x)
114#endif
115
116static const uint32_t dmask16[16] = {
117 PAT(0x00000000),
118 PAT(0x000000ff),
119 PAT(0x0000ff00),
120 PAT(0x0000ffff),
121 PAT(0x00ff0000),
122 PAT(0x00ff00ff),
123 PAT(0x00ffff00),
124 PAT(0x00ffffff),
125 PAT(0xff000000),
126 PAT(0xff0000ff),
127 PAT(0xff00ff00),
128 PAT(0xff00ffff),
129 PAT(0xffff0000),
130 PAT(0xffff00ff),
131 PAT(0xffffff00),
132 PAT(0xffffffff),
133};
134
135static const uint32_t dmask4[4] = {
136 PAT(0x00000000),
137 PAT(0x0000ffff),
138 PAT(0xffff0000),
139 PAT(0xffffffff),
140};
141
142static uint32_t expand4[256];
143static uint16_t expand2[256];
17b0018b 144static uint8_t expand4to8[16];
e89f66ec 145
7b17d41e 146VGAState *vga_state;
e89f66ec
FB		 147int vga_io_memory;
148
95219897
PB		 149static void vga_screen_dump(void *opaque, const char *filename);
150
0f35920c 151static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
e89f66ec 152{
0f35920c 153 VGAState *s = opaque;
e89f66ec
FB		 154 int val, index;
155
156 /* check port range access depending on color/monochrome mode */
157 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
158 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
159 val = 0xff;
160 } else {
161 switch(addr) {
162 case 0x3c0:
163 if (s->ar_flip_flop == 0) {
164 val = s->ar_index;
165 } else {
166 val = 0;
167 }
168 break;
169 case 0x3c1:
170 index = s->ar_index & 0x1f;
171 if (index < 21)
172 val = s->ar[index];
173 else
174 val = 0;
175 break;
176 case 0x3c2:
177 val = s->st00;
178 break;
179 case 0x3c4:
180 val = s->sr_index;
181 break;
182 case 0x3c5:
183 val = s->sr[s->sr_index];
a41bc9af
FB		 184#ifdef DEBUG_VGA_REG
185 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
186#endif
e89f66ec
FB		 187 break;
188 case 0x3c7:
189 val = s->dac_state;
190 break;
e6eccb38
FB		 191 case 0x3c8:
192 val = s->dac_write_index;
193 break;
e89f66ec
FB		 194 case 0x3c9:
195 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
196 if (++s->dac_sub_index == 3) {
197 s->dac_sub_index = 0;
198 s->dac_read_index++;
199 }
200 break;
201 case 0x3ca:
202 val = s->fcr;
203 break;
204 case 0x3cc:
205 val = s->msr;
206 break;
207 case 0x3ce:
208 val = s->gr_index;
209 break;
210 case 0x3cf:
211 val = s->gr[s->gr_index];
a41bc9af
FB		 212#ifdef DEBUG_VGA_REG
213 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
214#endif
e89f66ec
FB		 215 break;
216 case 0x3b4:
217 case 0x3d4:
218 val = s->cr_index;
219 break;
220 case 0x3b5:
221 case 0x3d5:
222 val = s->cr[s->cr_index];
a41bc9af
FB		 223#ifdef DEBUG_VGA_REG
224 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
a41bc9af 225#endif
e89f66ec
FB		 226 break;
227 case 0x3ba:
228 case 0x3da:
229 /* just toggle to fool polling */
230 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
231 val = s->st01;
232 s->ar_flip_flop = 0;
233 break;
234 default:
235 val = 0x00;
236 break;
237 }
238 }
4fa0f5d2 239#if defined(DEBUG_VGA)
e89f66ec
FB		 240 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
241#endif
242 return val;
243}
244
0f35920c 245static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
e89f66ec 246{
0f35920c 247 VGAState *s = opaque;
5467a722 248 int index;
e89f66ec
FB		 249
250 /* check port range access depending on color/monochrome mode */
251 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
252 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
253 return;
254
255#ifdef DEBUG_VGA
256 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
257#endif
258
259 switch(addr) {
260 case 0x3c0:
261 if (s->ar_flip_flop == 0) {
262 val &= 0x3f;
263 s->ar_index = val;
264 } else {
265 index = s->ar_index & 0x1f;
266 switch(index) {
267 case 0x00 ... 0x0f:
268 s->ar[index] = val & 0x3f;
269 break;
270 case 0x10:
271 s->ar[index] = val & ~0x10;
272 break;
273 case 0x11:
274 s->ar[index] = val;
275 break;
276 case 0x12:
277 s->ar[index] = val & ~0xc0;
278 break;
279 case 0x13:
280 s->ar[index] = val & ~0xf0;
281 break;
282 case 0x14:
283 s->ar[index] = val & ~0xf0;
284 break;
285 default:
286 break;
287 }
288 }
289 s->ar_flip_flop ^= 1;
290 break;
291 case 0x3c2:
292 s->msr = val & ~0x10;
293 break;
294 case 0x3c4:
295 s->sr_index = val & 7;
296 break;
297 case 0x3c5:
a41bc9af
FB		 298#ifdef DEBUG_VGA_REG
299 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
300#endif
e89f66ec
FB		 301 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
302 break;
303 case 0x3c7:
304 s->dac_read_index = val;
305 s->dac_sub_index = 0;
306 s->dac_state = 3;
307 break;
308 case 0x3c8:
309 s->dac_write_index = val;
310 s->dac_sub_index = 0;
311 s->dac_state = 0;
312 break;
313 case 0x3c9:
314 s->dac_cache[s->dac_sub_index] = val;
315 if (++s->dac_sub_index == 3) {
316 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
317 s->dac_sub_index = 0;
318 s->dac_write_index++;
319 }
320 break;
321 case 0x3ce:
322 s->gr_index = val & 0x0f;
323 break;
324 case 0x3cf:
a41bc9af
FB		 325#ifdef DEBUG_VGA_REG
326 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
327#endif
e89f66ec
FB		 328 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
329 break;
330 case 0x3b4:
331 case 0x3d4:
332 s->cr_index = val;
333 break;
334 case 0x3b5:
335 case 0x3d5:
a41bc9af
FB		 336#ifdef DEBUG_VGA_REG
337 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
338#endif
e89f66ec 339 /* handle CR0-7 protection */
f6c958c8 340 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
e89f66ec
FB		 341 /* can always write bit 4 of CR7 */
342 if (s->cr_index == 7)
343 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
344 return;
345 }
346 switch(s->cr_index) {
347 case 0x01: /* horizontal display end */
348 case 0x07:
349 case 0x09:
350 case 0x0c:
351 case 0x0d:
352 case 0x12: /* veritcal display end */
353 s->cr[s->cr_index] = val;
354 break;
e89f66ec
FB		 355 default:
356 s->cr[s->cr_index] = val;
357 break;
358 }
359 break;
360 case 0x3ba:
361 case 0x3da:
362 s->fcr = val & 0x10;
363 break;
364 }
365}
366
4fa0f5d2 367#ifdef CONFIG_BOCHS_VBE
09a79b49 368static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
4fa0f5d2 369{
0f35920c 370 VGAState *s = opaque;
4fa0f5d2 371 uint32_t val;
09a79b49
FB		 372 val = s->vbe_index;
373 return val;
374}
4fa0f5d2 375
09a79b49
FB		 376static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
377{
378 VGAState *s = opaque;
379 uint32_t val;
380
8454df8b
FB		 381 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
382 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
383 switch(s->vbe_index) {
384 /* XXX: do not hardcode ? */
385 case VBE_DISPI_INDEX_XRES:
386 val = VBE_DISPI_MAX_XRES;
387 break;
388 case VBE_DISPI_INDEX_YRES:
389 val = VBE_DISPI_MAX_YRES;
390 break;
391 case VBE_DISPI_INDEX_BPP:
392 val = VBE_DISPI_MAX_BPP;
393 break;
394 default:
395 val = s->vbe_regs[s->vbe_index];
396 break;
397 }
398 } else {
399 val = s->vbe_regs[s->vbe_index];
400 }
401 } else {
09a79b49 402 val = 0;
8454df8b 403 }
4fa0f5d2 404#ifdef DEBUG_BOCHS_VBE
09a79b49 405 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
4fa0f5d2 406#endif
4fa0f5d2
FB		 407 return val;
408}
409
09a79b49
FB		 410static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
411{
412 VGAState *s = opaque;
413 s->vbe_index = val;
414}
415
416static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
4fa0f5d2 417{
0f35920c 418 VGAState *s = opaque;
4fa0f5d2 419
09a79b49 420 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
4fa0f5d2
FB		 421#ifdef DEBUG_BOCHS_VBE
422 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
423#endif
424 switch(s->vbe_index) {
425 case VBE_DISPI_INDEX_ID:
cae61cef
FB		 426 if (val == VBE_DISPI_ID0 ||
427 val == VBE_DISPI_ID1 ||
428 val == VBE_DISPI_ID2) {
429 s->vbe_regs[s->vbe_index] = val;
430 }
4fa0f5d2
FB		 431 break;
432 case VBE_DISPI_INDEX_XRES:
cae61cef
FB		 433 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
434 s->vbe_regs[s->vbe_index] = val;
435 }
4fa0f5d2
FB		 436 break;
437 case VBE_DISPI_INDEX_YRES:
cae61cef
FB		 438 if (val <= VBE_DISPI_MAX_YRES) {
439 s->vbe_regs[s->vbe_index] = val;
440 }
4fa0f5d2
FB		 441 break;
442 case VBE_DISPI_INDEX_BPP:
443 if (val == 0)
444 val = 8;
cae61cef
FB		 445 if (val == 4 || val == 8 || val == 15 ||
446 val == 16 || val == 24 || val == 32) {
447 s->vbe_regs[s->vbe_index] = val;
448 }
4fa0f5d2
FB		 449 break;
450 case VBE_DISPI_INDEX_BANK:
cae61cef
FB		 451 val &= s->vbe_bank_mask;
452 s->vbe_regs[s->vbe_index] = val;
26aa7d72 453 s->bank_offset = (val << 16);
4fa0f5d2
FB		 454 break;
455 case VBE_DISPI_INDEX_ENABLE:
8454df8b
FB		 456 if ((val & VBE_DISPI_ENABLED) &&
457 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
4fa0f5d2
FB		 458 int h, shift_control;
459
460 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
461 s->vbe_regs[VBE_DISPI_INDEX_XRES];
462 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
463 s->vbe_regs[VBE_DISPI_INDEX_YRES];
464 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
465 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
466
467 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
468 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
469 else
470 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
471 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
472 s->vbe_start_addr = 0;
8454df8b 473
4fa0f5d2
FB		 474 /* clear the screen (should be done in BIOS) */
475 if (!(val & VBE_DISPI_NOCLEARMEM)) {
476 memset(s->vram_ptr, 0,
477 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
478 }
479
cae61cef
FB		 480 /* we initialize the VGA graphic mode (should be done
481 in BIOS) */
482 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
4fa0f5d2
FB		 483 s->cr[0x17] |= 3; /* no CGA modes */
484 s->cr[0x13] = s->vbe_line_offset >> 3;
485 /* width */
486 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
8454df8b 487 /* height (only meaningful if < 1024) */
4fa0f5d2
FB		 488 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
489 s->cr[0x12] = h;
490 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
491 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
492 /* line compare to 1023 */
493 s->cr[0x18] = 0xff;
494 s->cr[0x07] |= 0x10;
495 s->cr[0x09] |= 0x40;
496
497 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
498 shift_control = 0;
499 s->sr[0x01] &= ~8; /* no double line */
500 } else {
501 shift_control = 2;
646be93b 502 s->sr[4] |= 0x08; /* set chain 4 mode */
141253b2 503 s->sr[2] |= 0x0f; /* activate all planes */
4fa0f5d2
FB		 504 }
505 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
506 s->cr[0x09] &= ~0x9f; /* no double scan */
cae61cef
FB		 507 } else {
508 /* XXX: the bios should do that */
26aa7d72 509 s->bank_offset = 0;
cae61cef 510 }
141253b2 511 s->vbe_regs[s->vbe_index] = val;
cae61cef
FB		 512 break;
513 case VBE_DISPI_INDEX_VIRT_WIDTH:
514 {
515 int w, h, line_offset;
516
517 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
518 return;
519 w = val;
520 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
521 line_offset = w >> 1;
522 else
523 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
524 h = s->vram_size / line_offset;
525 /* XXX: support weird bochs semantics ? */
526 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
527 return;
528 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
529 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
530 s->vbe_line_offset = line_offset;
531 }
532 break;
533 case VBE_DISPI_INDEX_X_OFFSET:
534 case VBE_DISPI_INDEX_Y_OFFSET:
535 {
536 int x;
537 s->vbe_regs[s->vbe_index] = val;
538 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
539 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
540 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
541 s->vbe_start_addr += x >> 1;
542 else
543 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
544 s->vbe_start_addr >>= 2;
4fa0f5d2
FB		 545 }
546 break;
547 default:
548 break;
549 }
4fa0f5d2
FB		 550 }
551}
552#endif
553
e89f66ec 554/* called for accesses between 0xa0000 and 0xc0000 */
798b0c25 555uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
e89f66ec 556{
a4193c8a 557 VGAState *s = opaque;
e89f66ec
FB		 558 int memory_map_mode, plane;
559 uint32_t ret;
560
561 /* convert to VGA memory offset */
562 memory_map_mode = (s->gr[6] >> 2) & 3;
26aa7d72 563 addr &= 0x1ffff;
e89f66ec
FB		 564 switch(memory_map_mode) {
565 case 0:
e89f66ec
FB		 566 break;
567 case 1:
26aa7d72 568 if (addr >= 0x10000)
e89f66ec 569 return 0xff;
cae61cef 570 addr += s->bank_offset;
e89f66ec
FB		 571 break;
572 case 2:
26aa7d72 573 addr -= 0x10000;
e89f66ec
FB		 574 if (addr >= 0x8000)
575 return 0xff;
576 break;
577 default:
578 case 3:
26aa7d72 579 addr -= 0x18000;
c92b2e84
FB		 580 if (addr >= 0x8000)
581 return 0xff;
e89f66ec
FB		 582 break;
583 }
584
585 if (s->sr[4] & 0x08) {
586 /* chain 4 mode : simplest access */
587 ret = s->vram_ptr[addr];
588 } else if (s->gr[5] & 0x10) {
589 /* odd/even mode (aka text mode mapping) */
590 plane = (s->gr[4] & 2) | (addr & 1);
591 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
592 } else {
593 /* standard VGA latched access */
594 s->latch = ((uint32_t *)s->vram_ptr)[addr];
595
596 if (!(s->gr[5] & 0x08)) {
597 /* read mode 0 */
598 plane = s->gr[4];
b8ed223b 599 ret = GET_PLANE(s->latch, plane);
e89f66ec
FB		 600 } else {
601 /* read mode 1 */
602 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
603 ret |= ret >> 16;
604 ret |= ret >> 8;
605 ret = (~ret) & 0xff;
606 }
607 }
608 return ret;
609}
610
a4193c8a 611static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
e89f66ec
FB		 612{
613 uint32_t v;
09a79b49 614#ifdef TARGET_WORDS_BIGENDIAN
a4193c8a
FB		 615 v = vga_mem_readb(opaque, addr) << 8;
616 v |= vga_mem_readb(opaque, addr + 1);
09a79b49 617#else
a4193c8a
FB		 618 v = vga_mem_readb(opaque, addr);
619 v |= vga_mem_readb(opaque, addr + 1) << 8;
09a79b49 620#endif
e89f66ec
FB		 621 return v;
622}
623
a4193c8a 624static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
e89f66ec
FB		 625{
626 uint32_t v;
09a79b49 627#ifdef TARGET_WORDS_BIGENDIAN
a4193c8a
FB		 628 v = vga_mem_readb(opaque, addr) << 24;
629 v |= vga_mem_readb(opaque, addr + 1) << 16;
630 v |= vga_mem_readb(opaque, addr + 2) << 8;
631 v |= vga_mem_readb(opaque, addr + 3);
09a79b49 632#else
a4193c8a
FB		 633 v = vga_mem_readb(opaque, addr);
634 v |= vga_mem_readb(opaque, addr + 1) << 8;
635 v |= vga_mem_readb(opaque, addr + 2) << 16;
636 v |= vga_mem_readb(opaque, addr + 3) << 24;
09a79b49 637#endif
e89f66ec
FB		 638 return v;
639}
640
e89f66ec 641/* called for accesses between 0xa0000 and 0xc0000 */
798b0c25 642void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
e89f66ec 643{
a4193c8a 644 VGAState *s = opaque;
546fa6ab 645 int memory_map_mode, plane, write_mode, b, func_select, mask;
e89f66ec
FB		 646 uint32_t write_mask, bit_mask, set_mask;
647
17b0018b 648#ifdef DEBUG_VGA_MEM
e89f66ec
FB		 649 printf("vga: [0x%x] = 0x%02x\n", addr, val);
650#endif
651 /* convert to VGA memory offset */
652 memory_map_mode = (s->gr[6] >> 2) & 3;
26aa7d72 653 addr &= 0x1ffff;
e89f66ec
FB		 654 switch(memory_map_mode) {
655 case 0:
e89f66ec
FB		 656 break;
657 case 1:
26aa7d72 658 if (addr >= 0x10000)
e89f66ec 659 return;
cae61cef 660 addr += s->bank_offset;
e89f66ec
FB		 661 break;
662 case 2:
26aa7d72 663 addr -= 0x10000;
e89f66ec
FB		 664 if (addr >= 0x8000)
665 return;
666 break;
667 default:
668 case 3:
26aa7d72 669 addr -= 0x18000;
c92b2e84
FB		 670 if (addr >= 0x8000)
671 return;
e89f66ec
FB		 672 break;
673 }
674
675 if (s->sr[4] & 0x08) {
676 /* chain 4 mode : simplest access */
677 plane = addr & 3;
546fa6ab
FB		 678 mask = (1 << plane);
679 if (s->sr[2] & mask) {
e89f66ec 680 s->vram_ptr[addr] = val;
17b0018b 681#ifdef DEBUG_VGA_MEM
e89f66ec
FB		 682 printf("vga: chain4: [0x%x]\n", addr);
683#endif
546fa6ab 684 s->plane_updated |= mask; /* only used to detect font change */
4fa0f5d2 685 cpu_physical_memory_set_dirty(s->vram_offset + addr);
e89f66ec
FB		 686 }
687 } else if (s->gr[5] & 0x10) {
688 /* odd/even mode (aka text mode mapping) */
689 plane = (s->gr[4] & 2) | (addr & 1);
546fa6ab
FB		 690 mask = (1 << plane);
691 if (s->sr[2] & mask) {
e89f66ec
FB		 692 addr = ((addr & ~1) << 1) | plane;
693 s->vram_ptr[addr] = val;
17b0018b 694#ifdef DEBUG_VGA_MEM
e89f66ec
FB		 695 printf("vga: odd/even: [0x%x]\n", addr);
696#endif
546fa6ab 697 s->plane_updated |= mask; /* only used to detect font change */
4fa0f5d2 698 cpu_physical_memory_set_dirty(s->vram_offset + addr);
e89f66ec
FB		 699 }
700 } else {
701 /* standard VGA latched access */
702 write_mode = s->gr[5] & 3;
703 switch(write_mode) {
704 default:
705 case 0:
706 /* rotate */
707 b = s->gr[3] & 7;
708 val = ((val >> b) | (val << (8 - b))) & 0xff;
709 val |= val << 8;
710 val |= val << 16;
711
712 /* apply set/reset mask */
713 set_mask = mask16[s->gr[1]];
714 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
715 bit_mask = s->gr[8];
716 break;
717 case 1:
718 val = s->latch;
719 goto do_write;
720 case 2:
721 val = mask16[val & 0x0f];
722 bit_mask = s->gr[8];
723 break;
724 case 3:
725 /* rotate */
726 b = s->gr[3] & 7;
a41bc9af 727 val = (val >> b) | (val << (8 - b));
e89f66ec
FB		 728
729 bit_mask = s->gr[8] & val;
730 val = mask16[s->gr[0]];
731 break;
732 }
733
734 /* apply logical operation */
735 func_select = s->gr[3] >> 3;
736 switch(func_select) {
737 case 0:
738 default:
739 /* nothing to do */
740 break;
741 case 1:
742 /* and */
743 val &= s->latch;
744 break;
745 case 2:
746 /* or */
747 val |= s->latch;
748 break;
749 case 3:
750 /* xor */
751 val ^= s->latch;
752 break;
753 }
754
755 /* apply bit mask */
756 bit_mask |= bit_mask << 8;
757 bit_mask |= bit_mask << 16;
758 val = (val & bit_mask) | (s->latch & ~bit_mask);
759
760 do_write:
761 /* mask data according to sr[2] */
546fa6ab
FB		 762 mask = s->sr[2];
763 s->plane_updated |= mask; /* only used to detect font change */
764 write_mask = mask16[mask];
e89f66ec
FB		 765 ((uint32_t *)s->vram_ptr)[addr] =
766 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
767 (val & write_mask);
17b0018b 768#ifdef DEBUG_VGA_MEM
e89f66ec
FB		 769 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
770 addr * 4, write_mask, val);
771#endif
4fa0f5d2 772 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
e89f66ec
FB		 773 }
774}
775
a4193c8a 776static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
e89f66ec 777{
09a79b49 778#ifdef TARGET_WORDS_BIGENDIAN
a4193c8a
FB		 779 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
780 vga_mem_writeb(opaque, addr + 1, val & 0xff);
09a79b49 781#else
a4193c8a
FB		 782 vga_mem_writeb(opaque, addr, val & 0xff);
783 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
09a79b49 784#endif
e89f66ec
FB		 785}
786
a4193c8a 787static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
e89f66ec 788{
09a79b49 789#ifdef TARGET_WORDS_BIGENDIAN
a4193c8a
FB		 790 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
791 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
792 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
793 vga_mem_writeb(opaque, addr + 3, val & 0xff);
09a79b49 794#else
a4193c8a
FB		 795 vga_mem_writeb(opaque, addr, val & 0xff);
796 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
797 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
798 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
09a79b49 799#endif
e89f66ec
FB		 800}
801
e89f66ec
FB		 802typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
803 const uint8_t *font_ptr, int h,
804 uint32_t fgcol, uint32_t bgcol);
805typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
806 const uint8_t *font_ptr, int h,
807 uint32_t fgcol, uint32_t bgcol, int dup9);
808typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
809 const uint8_t *s, int width);
810
811static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
812{
188d8579 813 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
e89f66ec
FB		 814}
815
816static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
817{
818 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
819}
820
821static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
822{
823 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
824}
825
826static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
827{
828 return (r << 16) | (g << 8) | b;
829}
830
d3079cd2
FB		 831static inline unsigned int rgb_to_pixel32bgr(unsigned int r, unsigned int g, unsigned b)
832{
833 return (b << 16) | (g << 8) | r;
834}
835
e89f66ec
FB		 836#define DEPTH 8
837#include "vga_template.h"
838
839#define DEPTH 15
840#include "vga_template.h"
841
842#define DEPTH 16
843#include "vga_template.h"
844
845#define DEPTH 32
846#include "vga_template.h"
847
d3079cd2
FB		 848#define BGR_FORMAT
849#define DEPTH 32
850#include "vga_template.h"
851
17b0018b
FB		 852static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
853{
854 unsigned int col;
855 col = rgb_to_pixel8(r, g, b);
856 col |= col << 8;
857 col |= col << 16;
858 return col;
859}
860
861static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
862{
863 unsigned int col;
864 col = rgb_to_pixel15(r, g, b);
865 col |= col << 16;
866 return col;
867}
868
869static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
870{
871 unsigned int col;
872 col = rgb_to_pixel16(r, g, b);
873 col |= col << 16;
874 return col;
875}
876
877static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
878{
879 unsigned int col;
880 col = rgb_to_pixel32(r, g, b);
881 return col;
882}
883
d3079cd2
FB		 884static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
885{
886 unsigned int col;
887 col = rgb_to_pixel32bgr(r, g, b);
888 return col;
889}
890
e89f66ec
FB		 891/* return true if the palette was modified */
892static int update_palette16(VGAState *s)
893{
17b0018b 894 int full_update, i;
e89f66ec 895 uint32_t v, col, *palette;
e89f66ec
FB		 896
897 full_update = 0;
898 palette = s->last_palette;
899 for(i = 0; i < 16; i++) {
900 v = s->ar[i];
901 if (s->ar[0x10] & 0x80)
902 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
903 else
904 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
905 v = v * 3;
17b0018b
FB		 906 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
907 c6_to_8(s->palette[v + 1]),
908 c6_to_8(s->palette[v + 2]));
909 if (col != palette[i]) {
910 full_update = 1;
911 palette[i] = col;
e89f66ec 912 }
17b0018b
FB		 913 }
914 return full_update;
915}
916
917/* return true if the palette was modified */
918static int update_palette256(VGAState *s)
919{
920 int full_update, i;
921 uint32_t v, col, *palette;
922
923 full_update = 0;
924 palette = s->last_palette;
925 v = 0;
926 for(i = 0; i < 256; i++) {
927 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
928 c6_to_8(s->palette[v + 1]),
929 c6_to_8(s->palette[v + 2]));
e89f66ec
FB		 930 if (col != palette[i]) {
931 full_update = 1;
932 palette[i] = col;
933 }
17b0018b 934 v += 3;
e89f66ec
FB		 935 }
936 return full_update;
937}
938
798b0c25
FB		 939static void vga_get_offsets(VGAState *s,
940 uint32_t *pline_offset,
941 uint32_t *pstart_addr)
e89f66ec 942{
798b0c25 943 uint32_t start_addr, line_offset;
4fa0f5d2
FB		 944#ifdef CONFIG_BOCHS_VBE
945 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
946 line_offset = s->vbe_line_offset;
947 start_addr = s->vbe_start_addr;
948 } else
949#endif
950 {
951 /* compute line_offset in bytes */
952 line_offset = s->cr[0x13];
4fa0f5d2 953 line_offset <<= 3;
08e48902 954
4fa0f5d2
FB		 955 /* starting address */
956 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
4fa0f5d2 957 }
798b0c25
FB		 958 *pline_offset = line_offset;
959 *pstart_addr = start_addr;
960}
961
962/* update start_addr and line_offset. Return TRUE if modified */
963static int update_basic_params(VGAState *s)
964{
965 int full_update;
966 uint32_t start_addr, line_offset, line_compare;
4fa0f5d2 967
798b0c25
FB		 968 full_update = 0;
969
970 s->get_offsets(s, &line_offset, &start_addr);
e89f66ec
FB		 971 /* line compare */
972 line_compare = s->cr[0x18] |
973 ((s->cr[0x07] & 0x10) << 4) |
974 ((s->cr[0x09] & 0x40) << 3);
975
976 if (line_offset != s->line_offset ||
977 start_addr != s->start_addr ||
978 line_compare != s->line_compare) {
979 s->line_offset = line_offset;
980 s->start_addr = start_addr;
981 s->line_compare = line_compare;
982 full_update = 1;
983 }
984 return full_update;
985}
986
d3079cd2
FB		 987#define NB_DEPTHS 5
988
989static inline int get_depth_index(DisplayState *s)
e89f66ec 990{
d3079cd2 991 switch(s->depth) {
e89f66ec
FB		 992 default:
993 case 8:
994 return 0;
995 case 15:
996 return 1;
997 case 16:
998 return 2;
999 case 32:
d3079cd2
FB		 1000 if (s->bgr)
1001 return 4;
1002 else
1003 return 3;
e89f66ec
FB		 1004 }
1005}
1006
d3079cd2 1007static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
e89f66ec
FB		 1008 vga_draw_glyph8_8,
1009 vga_draw_glyph8_16,
1010 vga_draw_glyph8_16,
1011 vga_draw_glyph8_32,
d3079cd2 1012 vga_draw_glyph8_32,
e89f66ec
FB		 1013};
1014
d3079cd2 1015static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
17b0018b
FB		 1016 vga_draw_glyph16_8,
1017 vga_draw_glyph16_16,
1018 vga_draw_glyph16_16,
1019 vga_draw_glyph16_32,
d3079cd2 1020 vga_draw_glyph16_32,
17b0018b
FB		 1021};
1022
d3079cd2 1023static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
e89f66ec
FB		 1024 vga_draw_glyph9_8,
1025 vga_draw_glyph9_16,
1026 vga_draw_glyph9_16,
1027 vga_draw_glyph9_32,
d3079cd2 1028 vga_draw_glyph9_32,
e89f66ec
FB		 1029};
1030
1031static const uint8_t cursor_glyph[32 * 4] = {
1032 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1033 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1034 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1035 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1036 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1037 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1038 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1039 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1040 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1041 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1042 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1043 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1044 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1045 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1046 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1047 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1048};
1049
1050/*
1051 * Text mode update
1052 * Missing:
1053 * - double scan
1054 * - double width
1055 * - underline
1056 * - flashing
1057 */
1058static void vga_draw_text(VGAState *s, int full_update)
1059{
1060 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1061 int cx_min, cx_max, linesize, x_incr;
1062 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1063 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1064 const uint8_t *font_ptr, *font_base[2];
1065 int dup9, line_offset, depth_index;
1066 uint32_t *palette;
1067 uint32_t *ch_attr_ptr;
1068 vga_draw_glyph8_func *vga_draw_glyph8;
1069 vga_draw_glyph9_func *vga_draw_glyph9;
1070
1071 full_update |= update_palette16(s);
1072 palette = s->last_palette;
1073
1074 /* compute font data address (in plane 2) */
1075 v = s->sr[3];
1078f663 1076 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
e89f66ec
FB		 1077 if (offset != s->font_offsets[0]) {
1078 s->font_offsets[0] = offset;
1079 full_update = 1;
1080 }
1081 font_base[0] = s->vram_ptr + offset;
1082
1078f663 1083 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
e89f66ec
FB		 1084 font_base[1] = s->vram_ptr + offset;
1085 if (offset != s->font_offsets[1]) {
1086 s->font_offsets[1] = offset;
1087 full_update = 1;
1088 }
546fa6ab
FB		 1089 if (s->plane_updated & (1 << 2)) {
1090 /* if the plane 2 was modified since the last display, it
1091 indicates the font may have been modified */
1092 s->plane_updated = 0;
1093 full_update = 1;
1094 }
e89f66ec
FB		 1095 full_update |= update_basic_params(s);
1096
1097 line_offset = s->line_offset;
1098 s1 = s->vram_ptr + (s->start_addr * 4);
1099
1100 /* total width & height */
1101 cheight = (s->cr[9] & 0x1f) + 1;
1102 cw = 8;
eccabc6e 1103 if (!(s->sr[1] & 0x01))
e89f66ec 1104 cw = 9;
17b0018b
FB		 1105 if (s->sr[1] & 0x08)
1106 cw = 16; /* NOTE: no 18 pixel wide */
e89f66ec
FB		 1107 x_incr = cw * ((s->ds->depth + 7) >> 3);
1108 width = (s->cr[0x01] + 1);
17b0018b
FB		 1109 if (s->cr[0x06] == 100) {
1110 /* ugly hack for CGA 160x100x16 - explain me the logic */
1111 height = 100;
1112 } else {
1113 height = s->cr[0x12] |
1114 ((s->cr[0x07] & 0x02) << 7) |
1115 ((s->cr[0x07] & 0x40) << 3);
1116 height = (height + 1) / cheight;
1117 }
3294b949
FB		 1118 if ((height * width) > CH_ATTR_SIZE) {
1119 /* better than nothing: exit if transient size is too big */
1120 return;
1121 }
1122
e89f66ec 1123 if (width != s->last_width || height != s->last_height ||
eccabc6e 1124 cw != s->last_cw || cheight != s->last_ch) {
2aebb3eb
FB		 1125 s->last_scr_width = width * cw;
1126 s->last_scr_height = height * cheight;
1127 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
e89f66ec
FB		 1128 s->last_width = width;
1129 s->last_height = height;
1130 s->last_ch = cheight;
1131 s->last_cw = cw;
1132 full_update = 1;
1133 }
1134 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1135 if (cursor_offset != s->cursor_offset ||
1136 s->cr[0xa] != s->cursor_start ||
1137 s->cr[0xb] != s->cursor_end) {
1138 /* if the cursor position changed, we update the old and new
1139 chars */
1140 if (s->cursor_offset < CH_ATTR_SIZE)
1141 s->last_ch_attr[s->cursor_offset] = -1;
1142 if (cursor_offset < CH_ATTR_SIZE)
1143 s->last_ch_attr[cursor_offset] = -1;
1144 s->cursor_offset = cursor_offset;
1145 s->cursor_start = s->cr[0xa];
1146 s->cursor_end = s->cr[0xb];
1147 }
39cf7803 1148 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
e89f66ec 1149
d3079cd2 1150 depth_index = get_depth_index(s->ds);
17b0018b
FB		 1151 if (cw == 16)
1152 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1153 else
1154 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
e89f66ec
FB		 1155 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1156
1157 dest = s->ds->data;
1158 linesize = s->ds->linesize;
1159 ch_attr_ptr = s->last_ch_attr;
1160 for(cy = 0; cy < height; cy++) {
1161 d1 = dest;
1162 src = s1;
1163 cx_min = width;
1164 cx_max = -1;
1165 for(cx = 0; cx < width; cx++) {
1166 ch_attr = *(uint16_t *)src;
1167 if (full_update || ch_attr != *ch_attr_ptr) {
1168 if (cx < cx_min)
1169 cx_min = cx;
1170 if (cx > cx_max)
1171 cx_max = cx;
1172 *ch_attr_ptr = ch_attr;
1173#ifdef WORDS_BIGENDIAN
1174 ch = ch_attr >> 8;
1175 cattr = ch_attr & 0xff;
1176#else
1177 ch = ch_attr & 0xff;
1178 cattr = ch_attr >> 8;
1179#endif
1180 font_ptr = font_base[(cattr >> 3) & 1];
1181 font_ptr += 32 * 4 * ch;
1182 bgcol = palette[cattr >> 4];
1183 fgcol = palette[cattr & 0x0f];
17b0018b 1184 if (cw != 9) {
e89f66ec
FB		 1185 vga_draw_glyph8(d1, linesize,
1186 font_ptr, cheight, fgcol, bgcol);
1187 } else {
1188 dup9 = 0;
1189 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1190 dup9 = 1;
1191 vga_draw_glyph9(d1, linesize,
1192 font_ptr, cheight, fgcol, bgcol, dup9);
1193 }
1194 if (src == cursor_ptr &&
1195 !(s->cr[0x0a] & 0x20)) {
1196 int line_start, line_last, h;
1197 /* draw the cursor */
1198 line_start = s->cr[0x0a] & 0x1f;
1199 line_last = s->cr[0x0b] & 0x1f;
1200 /* XXX: check that */
1201 if (line_last > cheight - 1)
1202 line_last = cheight - 1;
1203 if (line_last >= line_start && line_start < cheight) {
1204 h = line_last - line_start + 1;
1205 d = d1 + linesize * line_start;
17b0018b 1206 if (cw != 9) {
e89f66ec
FB		 1207 vga_draw_glyph8(d, linesize,
1208 cursor_glyph, h, fgcol, bgcol);
1209 } else {
1210 vga_draw_glyph9(d, linesize,
1211 cursor_glyph, h, fgcol, bgcol, 1);
1212 }
1213 }
1214 }
1215 }
1216 d1 += x_incr;
1217 src += 4;
1218 ch_attr_ptr++;
1219 }
1220 if (cx_max != -1) {
1221 dpy_update(s->ds, cx_min * cw, cy * cheight,
1222 (cx_max - cx_min + 1) * cw, cheight);
1223 }
1224 dest += linesize * cheight;
1225 s1 += line_offset;
1226 }
1227}
1228
17b0018b
FB		 1229enum {
1230 VGA_DRAW_LINE2,
1231 VGA_DRAW_LINE2D2,
1232 VGA_DRAW_LINE4,
1233 VGA_DRAW_LINE4D2,
1234 VGA_DRAW_LINE8D2,
1235 VGA_DRAW_LINE8,
1236 VGA_DRAW_LINE15,
1237 VGA_DRAW_LINE16,
4fa0f5d2 1238 VGA_DRAW_LINE24,
17b0018b
FB		 1239 VGA_DRAW_LINE32,
1240 VGA_DRAW_LINE_NB,
1241};
1242
d3079cd2 1243static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
e89f66ec
FB		 1244 vga_draw_line2_8,
1245 vga_draw_line2_16,
1246 vga_draw_line2_16,
1247 vga_draw_line2_32,
d3079cd2 1248 vga_draw_line2_32,
e89f66ec 1249
17b0018b
FB		 1250 vga_draw_line2d2_8,
1251 vga_draw_line2d2_16,
1252 vga_draw_line2d2_16,
1253 vga_draw_line2d2_32,
d3079cd2 1254 vga_draw_line2d2_32,
17b0018b 1255
e89f66ec
FB		 1256 vga_draw_line4_8,
1257 vga_draw_line4_16,
1258 vga_draw_line4_16,
1259 vga_draw_line4_32,
d3079cd2 1260 vga_draw_line4_32,
e89f66ec 1261
17b0018b
FB		 1262 vga_draw_line4d2_8,
1263 vga_draw_line4d2_16,
1264 vga_draw_line4d2_16,
1265 vga_draw_line4d2_32,
d3079cd2 1266 vga_draw_line4d2_32,
17b0018b
FB		 1267
1268 vga_draw_line8d2_8,
1269 vga_draw_line8d2_16,
1270 vga_draw_line8d2_16,
1271 vga_draw_line8d2_32,
d3079cd2 1272 vga_draw_line8d2_32,
17b0018b 1273
e89f66ec
FB		 1274 vga_draw_line8_8,
1275 vga_draw_line8_16,
1276 vga_draw_line8_16,
1277 vga_draw_line8_32,
d3079cd2 1278 vga_draw_line8_32,
e89f66ec
FB		 1279
1280 vga_draw_line15_8,
1281 vga_draw_line15_15,
1282 vga_draw_line15_16,
1283 vga_draw_line15_32,
d3079cd2 1284 vga_draw_line15_32bgr,
e89f66ec
FB		 1285
1286 vga_draw_line16_8,
1287 vga_draw_line16_15,
1288 vga_draw_line16_16,
1289 vga_draw_line16_32,
d3079cd2 1290 vga_draw_line16_32bgr,
e89f66ec 1291
4fa0f5d2
FB		 1292 vga_draw_line24_8,
1293 vga_draw_line24_15,
1294 vga_draw_line24_16,
1295 vga_draw_line24_32,
d3079cd2 1296 vga_draw_line24_32bgr,
4fa0f5d2 1297
e89f66ec
FB		 1298 vga_draw_line32_8,
1299 vga_draw_line32_15,
1300 vga_draw_line32_16,
1301 vga_draw_line32_32,
d3079cd2
FB		 1302 vga_draw_line32_32bgr,
1303};
1304
1305typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1306
1307static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1308 rgb_to_pixel8_dup,
1309 rgb_to_pixel15_dup,
1310 rgb_to_pixel16_dup,
1311 rgb_to_pixel32_dup,
1312 rgb_to_pixel32bgr_dup,
e89f66ec
FB		 1313};
1314
798b0c25
FB		 1315static int vga_get_bpp(VGAState *s)
1316{
1317 int ret;
1318#ifdef CONFIG_BOCHS_VBE
1319 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1320 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1321 } else
1322#endif
1323 {
1324 ret = 0;
1325 }
1326 return ret;
1327}
1328
a130a41e
FB		 1329static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1330{
1331 int width, height;
1332
8454df8b
FB		 1333#ifdef CONFIG_BOCHS_VBE
1334 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1335 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1336 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1337 } else
1338#endif
1339 {
1340 width = (s->cr[0x01] + 1) * 8;
1341 height = s->cr[0x12] |
1342 ((s->cr[0x07] & 0x02) << 7) |
1343 ((s->cr[0x07] & 0x40) << 3);
1344 height = (height + 1);
1345 }
a130a41e
FB		 1346 *pwidth = width;
1347 *pheight = height;
1348}
1349
a8aa669b
FB		 1350void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1351{
1352 int y;
1353 if (y1 >= VGA_MAX_HEIGHT)
1354 return;
1355 if (y2 >= VGA_MAX_HEIGHT)
1356 y2 = VGA_MAX_HEIGHT;
1357 for(y = y1; y < y2; y++) {
1358 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1359 }
1360}
1361
e89f66ec
FB		 1362/*
1363 * graphic modes
e89f66ec
FB		 1364 */
1365static void vga_draw_graphic(VGAState *s, int full_update)
1366{
17b0018b 1367 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
39cf7803 1368 int width, height, shift_control, line_offset, page0, page1, bwidth;
a07cf92a 1369 int disp_width, multi_scan, multi_run;
e89f66ec 1370 uint8_t *d;
39cf7803 1371 uint32_t v, addr1, addr;
e89f66ec 1372 vga_draw_line_func *vga_draw_line;
17b0018b 1373
e89f66ec
FB		 1374 full_update |= update_basic_params(s);
1375
a130a41e 1376 s->get_resolution(s, &width, &height);
17b0018b 1377 disp_width = width;
09a79b49 1378
e89f66ec 1379 shift_control = (s->gr[0x05] >> 5) & 3;
f6c958c8
FB		 1380 double_scan = (s->cr[0x09] >> 7);
1381 if (shift_control != 1) {
1382 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
a07cf92a 1383 } else {
f6c958c8
FB		 1384 /* in CGA modes, multi_scan is ignored */
1385 /* XXX: is it correct ? */
1386 multi_scan = double_scan;
a07cf92a
FB		 1387 }
1388 multi_run = multi_scan;
17b0018b
FB		 1389 if (shift_control != s->shift_control ||
1390 double_scan != s->double_scan) {
e89f66ec
FB		 1391 full_update = 1;
1392 s->shift_control = shift_control;
17b0018b 1393 s->double_scan = double_scan;
e89f66ec
FB		 1394 }
1395
17b0018b
FB		 1396 if (shift_control == 0) {
1397 full_update |= update_palette16(s);
1398 if (s->sr[0x01] & 8) {
1399 v = VGA_DRAW_LINE4D2;
1400 disp_width <<= 1;
1401 } else {
1402 v = VGA_DRAW_LINE4;
1403 }
1404 } else if (shift_control == 1) {
1405 full_update |= update_palette16(s);
1406 if (s->sr[0x01] & 8) {
1407 v = VGA_DRAW_LINE2D2;
1408 disp_width <<= 1;
1409 } else {
1410 v = VGA_DRAW_LINE2;
1411 }
1412 } else {
798b0c25
FB		 1413 switch(s->get_bpp(s)) {
1414 default:
1415 case 0:
4fa0f5d2
FB		 1416 full_update |= update_palette256(s);
1417 v = VGA_DRAW_LINE8D2;
798b0c25
FB		 1418 break;
1419 case 8:
1420 full_update |= update_palette256(s);
1421 v = VGA_DRAW_LINE8;
1422 break;
1423 case 15:
1424 v = VGA_DRAW_LINE15;
1425 break;
1426 case 16:
1427 v = VGA_DRAW_LINE16;
1428 break;
1429 case 24:
1430 v = VGA_DRAW_LINE24;
1431 break;
1432 case 32:
1433 v = VGA_DRAW_LINE32;
1434 break;
4fa0f5d2 1435 }
17b0018b 1436 }
d3079cd2 1437 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
17b0018b
FB		 1438
1439 if (disp_width != s->last_width ||
1440 height != s->last_height) {
1441 dpy_resize(s->ds, disp_width, height);
2aebb3eb
FB		 1442 s->last_scr_width = disp_width;
1443 s->last_scr_height = height;
17b0018b
FB		 1444 s->last_width = disp_width;
1445 s->last_height = height;
1446 full_update = 1;
1447 }
a8aa669b
FB		 1448 if (s->cursor_invalidate)
1449 s->cursor_invalidate(s);
1450
e89f66ec 1451 line_offset = s->line_offset;
17b0018b 1452#if 0
f6c958c8 1453 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",
17b0018b
FB		 1454 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1455#endif
e89f66ec 1456 addr1 = (s->start_addr * 4);
39cf7803
FB		 1457 bwidth = width * 4;
1458 y_start = -1;
e89f66ec
FB		 1459 page_min = 0x7fffffff;
1460 page_max = -1;
1461 d = s->ds->data;
1462 linesize = s->ds->linesize;
17b0018b 1463 y1 = 0;
e89f66ec
FB		 1464 for(y = 0; y < height; y++) {
1465 addr = addr1;
39cf7803 1466 if (!(s->cr[0x17] & 1)) {
17b0018b 1467 int shift;
e89f66ec 1468 /* CGA compatibility handling */
17b0018b
FB		 1469 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1470 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
e89f66ec 1471 }
39cf7803 1472 if (!(s->cr[0x17] & 2)) {
17b0018b 1473 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
e89f66ec 1474 }
4fa0f5d2
FB		 1475 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1476 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
0a962c02
FB		 1477 update = full_update |
1478 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1479 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
4fa0f5d2 1480 if ((page1 - page0) > TARGET_PAGE_SIZE) {
39cf7803 1481 /* if wide line, can use another page */
0a962c02
FB		 1482 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1483 VGA_DIRTY_FLAG);
39cf7803 1484 }
a8aa669b
FB		 1485 /* explicit invalidation for the hardware cursor */
1486 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
e89f66ec 1487 if (update) {
39cf7803
FB		 1488 if (y_start < 0)
1489 y_start = y;
e89f66ec
FB		 1490 if (page0 < page_min)
1491 page_min = page0;
1492 if (page1 > page_max)
1493 page_max = page1;
1494 vga_draw_line(s, d, s->vram_ptr + addr, width);
a8aa669b
FB		 1495 if (s->cursor_draw_line)
1496 s->cursor_draw_line(s, d, y);
39cf7803
FB		 1497 } else {
1498 if (y_start >= 0) {
1499 /* flush to display */
1500 dpy_update(s->ds, 0, y_start,
17b0018b 1501 disp_width, y - y_start);
39cf7803
FB		 1502 y_start = -1;
1503 }
e89f66ec 1504 }
a07cf92a 1505 if (!multi_run) {
f6c958c8
FB		 1506 mask = (s->cr[0x17] & 3) ^ 3;
1507 if ((y1 & mask) == mask)
1508 addr1 += line_offset;
1509 y1++;
a07cf92a
FB		 1510 multi_run = multi_scan;
1511 } else {
1512 multi_run--;
e89f66ec 1513 }
f6c958c8
FB		 1514 /* line compare acts on the displayed lines */
1515 if (y == s->line_compare)
1516 addr1 = 0;
e89f66ec
FB		 1517 d += linesize;
1518 }
39cf7803
FB		 1519 if (y_start >= 0) {
1520 /* flush to display */
1521 dpy_update(s->ds, 0, y_start,
17b0018b 1522 disp_width, y - y_start);
39cf7803 1523 }
e89f66ec
FB		 1524 /* reset modified pages */
1525 if (page_max != -1) {
0a962c02
FB		 1526 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1527 VGA_DIRTY_FLAG);
e89f66ec 1528 }
a8aa669b 1529 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
e89f66ec
FB		 1530}
1531
2aebb3eb
FB		 1532static void vga_draw_blank(VGAState *s, int full_update)
1533{
1534 int i, w, val;
1535 uint8_t *d;
1536
1537 if (!full_update)
1538 return;
1539 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1540 return;
1541 if (s->ds->depth == 8)
1542 val = s->rgb_to_pixel(0, 0, 0);
1543 else
1544 val = 0;
1545 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1546 d = s->ds->data;
1547 for(i = 0; i < s->last_scr_height; i++) {
1548 memset(d, val, w);
1549 d += s->ds->linesize;
1550 }
1551 dpy_update(s->ds, 0, 0,
1552 s->last_scr_width, s->last_scr_height);
1553}
1554
1555#define GMODE_TEXT 0
1556#define GMODE_GRAPH 1
1557#define GMODE_BLANK 2
1558
95219897 1559static void vga_update_display(void *opaque)
e89f66ec 1560{
95219897 1561 VGAState *s = (VGAState *)opaque;
e89f66ec
FB		 1562 int full_update, graphic_mode;
1563
1564 if (s->ds->depth == 0) {
0f35920c 1565 /* nothing to do */
59a983b9 1566 } else {
d3079cd2
FB		 1567 s->rgb_to_pixel =
1568 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
59a983b9 1569
e89f66ec 1570 full_update = 0;
2aebb3eb
FB		 1571 if (!(s->ar_index & 0x20)) {
1572 graphic_mode = GMODE_BLANK;
1573 } else {
1574 graphic_mode = s->gr[6] & 1;
1575 }
e89f66ec
FB		 1576 if (graphic_mode != s->graphic_mode) {
1577 s->graphic_mode = graphic_mode;
1578 full_update = 1;
1579 }
2aebb3eb
FB		 1580 switch(graphic_mode) {
1581 case GMODE_TEXT:
e89f66ec 1582 vga_draw_text(s, full_update);
2aebb3eb
FB		 1583 break;
1584 case GMODE_GRAPH:
1585 vga_draw_graphic(s, full_update);
1586 break;
1587 case GMODE_BLANK:
1588 default:
1589 vga_draw_blank(s, full_update);
1590 break;
1591 }
e89f66ec
FB		 1592 }
1593}
1594
a130a41e 1595/* force a full display refresh */
95219897 1596static void vga_invalidate_display(void *opaque)
a130a41e 1597{
95219897 1598 VGAState *s = (VGAState *)opaque;
a130a41e
FB		 1599
1600 s->last_width = -1;
1601 s->last_height = -1;
1602}
1603
59a983b9 1604static void vga_reset(VGAState *s)
e89f66ec
FB		 1605{
1606 memset(s, 0, sizeof(VGAState));
e89f66ec
FB		 1607 s->graphic_mode = -1; /* force full update */
1608}
1609
59a983b9 1610static CPUReadMemoryFunc *vga_mem_read[3] = {
e89f66ec
FB		 1611 vga_mem_readb,
1612 vga_mem_readw,
1613 vga_mem_readl,
1614};
1615
59a983b9 1616static CPUWriteMemoryFunc *vga_mem_write[3] = {
e89f66ec
FB		 1617 vga_mem_writeb,
1618 vga_mem_writew,
1619 vga_mem_writel,
1620};
1621
b0a21b53
FB		 1622static void vga_save(QEMUFile *f, void *opaque)
1623{
1624 VGAState *s = opaque;
1625 int i;
1626
1627 qemu_put_be32s(f, &s->latch);
1628 qemu_put_8s(f, &s->sr_index);
1629 qemu_put_buffer(f, s->sr, 8);
1630 qemu_put_8s(f, &s->gr_index);
1631 qemu_put_buffer(f, s->gr, 16);
1632 qemu_put_8s(f, &s->ar_index);
1633 qemu_put_buffer(f, s->ar, 21);
1634 qemu_put_be32s(f, &s->ar_flip_flop);
1635 qemu_put_8s(f, &s->cr_index);
1636 qemu_put_buffer(f, s->cr, 256);
1637 qemu_put_8s(f, &s->msr);
1638 qemu_put_8s(f, &s->fcr);
1639 qemu_put_8s(f, &s->st00);
1640 qemu_put_8s(f, &s->st01);
1641
1642 qemu_put_8s(f, &s->dac_state);
1643 qemu_put_8s(f, &s->dac_sub_index);
1644 qemu_put_8s(f, &s->dac_read_index);
1645 qemu_put_8s(f, &s->dac_write_index);
1646 qemu_put_buffer(f, s->dac_cache, 3);
1647 qemu_put_buffer(f, s->palette, 768);
1648
1649 qemu_put_be32s(f, &s->bank_offset);
1650#ifdef CONFIG_BOCHS_VBE
1651 qemu_put_byte(f, 1);
1652 qemu_put_be16s(f, &s->vbe_index);
1653 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1654 qemu_put_be16s(f, &s->vbe_regs[i]);
1655 qemu_put_be32s(f, &s->vbe_start_addr);
1656 qemu_put_be32s(f, &s->vbe_line_offset);
1657 qemu_put_be32s(f, &s->vbe_bank_mask);
1658#else
1659 qemu_put_byte(f, 0);
1660#endif
1661}
1662
1663static int vga_load(QEMUFile *f, void *opaque, int version_id)
1664{
1665 VGAState *s = opaque;
1666 int is_vbe, i;
1667
1668 if (version_id != 1)
1669 return -EINVAL;
1670
1671 qemu_get_be32s(f, &s->latch);
1672 qemu_get_8s(f, &s->sr_index);
1673 qemu_get_buffer(f, s->sr, 8);
1674 qemu_get_8s(f, &s->gr_index);
1675 qemu_get_buffer(f, s->gr, 16);
1676 qemu_get_8s(f, &s->ar_index);
1677 qemu_get_buffer(f, s->ar, 21);
1678 qemu_get_be32s(f, &s->ar_flip_flop);
1679 qemu_get_8s(f, &s->cr_index);
1680 qemu_get_buffer(f, s->cr, 256);
1681 qemu_get_8s(f, &s->msr);
1682 qemu_get_8s(f, &s->fcr);
1683 qemu_get_8s(f, &s->st00);
1684 qemu_get_8s(f, &s->st01);
1685
1686 qemu_get_8s(f, &s->dac_state);
1687 qemu_get_8s(f, &s->dac_sub_index);
1688 qemu_get_8s(f, &s->dac_read_index);
1689 qemu_get_8s(f, &s->dac_write_index);
1690 qemu_get_buffer(f, s->dac_cache, 3);
1691 qemu_get_buffer(f, s->palette, 768);
1692
1693 qemu_get_be32s(f, &s->bank_offset);
1694 is_vbe = qemu_get_byte(f);
1695#ifdef CONFIG_BOCHS_VBE
1696 if (!is_vbe)
1697 return -EINVAL;
1698 qemu_get_be16s(f, &s->vbe_index);
1699 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1700 qemu_get_be16s(f, &s->vbe_regs[i]);
1701 qemu_get_be32s(f, &s->vbe_start_addr);
1702 qemu_get_be32s(f, &s->vbe_line_offset);
1703 qemu_get_be32s(f, &s->vbe_bank_mask);
1704#else
1705 if (is_vbe)
1706 return -EINVAL;
1707#endif
1708
1709 /* force refresh */
1710 s->graphic_mode = -1;
1711 return 0;
1712}
1713
1078f663
FB		 1714static void vga_map(PCIDevice *pci_dev, int region_num,
1715 uint32_t addr, uint32_t size, int type)
1716{
7b17d41e 1717 VGAState *s = vga_state;
d5295253
FB		 1718 if (region_num == PCI_ROM_SLOT) {
1719 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
1720 } else {
1721 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1722 }
1078f663
FB		 1723}
1724
798b0c25
FB		 1725void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1726 unsigned long vga_ram_offset, int vga_ram_size)
e89f66ec 1727{
17b0018b 1728 int i, j, v, b;
e89f66ec
FB		 1729
1730 for(i = 0;i < 256; i++) {
1731 v = 0;
1732 for(j = 0; j < 8; j++) {
1733 v |= ((i >> j) & 1) << (j * 4);
1734 }
1735 expand4[i] = v;
1736
1737 v = 0;
1738 for(j = 0; j < 4; j++) {
1739 v |= ((i >> (2 * j)) & 3) << (j * 4);
1740 }
1741 expand2[i] = v;
1742 }
17b0018b
FB		 1743 for(i = 0; i < 16; i++) {
1744 v = 0;
1745 for(j = 0; j < 4; j++) {
1746 b = ((i >> j) & 1);
1747 v |= b << (2 * j);
1748 v |= b << (2 * j + 1);
1749 }
1750 expand4to8[i] = v;
1751 }
e89f66ec
FB		 1752
1753 vga_reset(s);
1754
1755 s->vram_ptr = vga_ram_base;
1756 s->vram_offset = vga_ram_offset;
1757 s->vram_size = vga_ram_size;
1758 s->ds = ds;
798b0c25
FB		 1759 s->get_bpp = vga_get_bpp;
1760 s->get_offsets = vga_get_offsets;
a130a41e 1761 s->get_resolution = vga_get_resolution;
95219897
PB		 1762 graphic_console_init(s->ds, vga_update_display, vga_invalidate_display,
1763 vga_screen_dump, s);
7b17d41e
FB		 1764 /* XXX: currently needed for display */
1765 vga_state = s;
798b0c25
FB		 1766}
1767
1768
46e50e9d 1769int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
d5295253
FB		 1770 unsigned long vga_ram_offset, int vga_ram_size,
1771 unsigned long vga_bios_offset, int vga_bios_size)
798b0c25 1772{
7b17d41e
FB		 1773 VGAState *s;
1774
1775 s = qemu_mallocz(sizeof(VGAState));
1776 if (!s)
1777 return -1;
798b0c25
FB		 1778
1779 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
e89f66ec 1780
b0a21b53
FB		 1781 register_savevm("vga", 0, 1, vga_save, vga_load, s);
1782
0f35920c 1783 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
e89f66ec 1784
0f35920c
FB		 1785 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1786 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1787 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1788 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
e89f66ec 1789
0f35920c 1790 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
e89f66ec 1791
0f35920c
FB		 1792 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1793 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1794 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1795 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
26aa7d72 1796 s->bank_offset = 0;
e89f66ec 1797
4fa0f5d2
FB		 1798#ifdef CONFIG_BOCHS_VBE
1799 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
cae61cef 1800 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
09a79b49
FB		 1801#if defined (TARGET_I386)
1802 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1803 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
4fa0f5d2 1804
09a79b49
FB		 1805 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1806 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
646be93b
FB		 1807
1808 /* old Bochs IO ports */
09a79b49
FB		 1809 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1810 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
646be93b 1811
09a79b49
FB		 1812 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1813 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1814#else
1815 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1816 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1817
1818 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1819 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
4fa0f5d2 1820#endif
09a79b49 1821#endif /* CONFIG_BOCHS_VBE */
4fa0f5d2 1822
a4193c8a 1823 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
26aa7d72
FB		 1824 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1825 vga_io_memory);
1078f663 1826
46e50e9d 1827 if (bus) {
1078f663
FB		 1828 PCIDevice *d;
1829 uint8_t *pci_conf;
1830
46e50e9d 1831 d = pci_register_device(bus, "VGA",
1078f663 1832 sizeof(PCIDevice),
46e50e9d 1833 -1, NULL, NULL);
1078f663
FB		 1834 pci_conf = d->config;
1835 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1836 pci_conf[0x01] = 0x12;
1837 pci_conf[0x02] = 0x11;
1838 pci_conf[0x03] = 0x11;
1839 pci_conf[0x0a] = 0x00; // VGA controller
1840 pci_conf[0x0b] = 0x03;
1841 pci_conf[0x0e] = 0x00; // header_type
1842
1843 /* XXX: vga_ram_size must be a power of two */
1844 pci_register_io_region(d, 0, vga_ram_size,
1845 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
d5295253
FB		 1846 if (vga_bios_size != 0) {
1847 unsigned int bios_total_size;
1848 s->bios_offset = vga_bios_offset;
1849 s->bios_size = vga_bios_size;
1850 /* must be a power of two */
1851 bios_total_size = 1;
1852 while (bios_total_size < vga_bios_size)
1853 bios_total_size <<= 1;
1854 pci_register_io_region(d, PCI_ROM_SLOT, bios_total_size,
1855 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1856 }
1078f663 1857 } else {
4fa0f5d2 1858#ifdef CONFIG_BOCHS_VBE
1078f663
FB		 1859 /* XXX: use optimized standard vga accesses */
1860 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1861 vga_ram_size, vga_ram_offset);
7138fcfb 1862#endif
1078f663 1863 }
e89f66ec
FB		 1864 return 0;
1865}
59a983b9
FB		 1866
1867/********************************************************/
1868/* vga screen dump */
1869
1870static int vga_save_w, vga_save_h;
1871
1872static void vga_save_dpy_update(DisplayState *s,
1873 int x, int y, int w, int h)
1874{
1875}
1876
1877static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1878{
1879 s->linesize = w * 4;
1880 s->data = qemu_malloc(h * s->linesize);
1881 vga_save_w = w;
1882 vga_save_h = h;
1883}
1884
1885static void vga_save_dpy_refresh(DisplayState *s)
1886{
1887}
1888
1889static int ppm_save(const char *filename, uint8_t *data,
1890 int w, int h, int linesize)
1891{
1892 FILE *f;
1893 uint8_t *d, *d1;
1894 unsigned int v;
1895 int y, x;
1896
1897 f = fopen(filename, "wb");
1898 if (!f)
1899 return -1;
1900 fprintf(f, "P6\n%d %d\n%d\n",
1901 w, h, 255);
1902 d1 = data;
1903 for(y = 0; y < h; y++) {
1904 d = d1;
1905 for(x = 0; x < w; x++) {
1906 v = *(uint32_t *)d;
1907 fputc((v >> 16) & 0xff, f);
1908 fputc((v >> 8) & 0xff, f);
1909 fputc((v) & 0xff, f);
1910 d += 4;
1911 }
1912 d1 += linesize;
1913 }
1914 fclose(f);
1915 return 0;
1916}
1917
1918/* save the vga display in a PPM image even if no display is
1919 available */
95219897 1920static void vga_screen_dump(void *opaque, const char *filename)
59a983b9 1921{
95219897 1922 VGAState *s = (VGAState *)opaque;
59a983b9
FB		 1923 DisplayState *saved_ds, ds1, *ds = &ds1;
1924
1925 /* XXX: this is a little hackish */
95219897 1926 vga_invalidate_display(s);
59a983b9
FB		 1927 saved_ds = s->ds;
1928
1929 memset(ds, 0, sizeof(DisplayState));
1930 ds->dpy_update = vga_save_dpy_update;
1931 ds->dpy_resize = vga_save_dpy_resize;
1932 ds->dpy_refresh = vga_save_dpy_refresh;
1933 ds->depth = 32;
1934
1935 s->ds = ds;
1936 s->graphic_mode = -1;
95219897 1937 vga_update_display(s);
59a983b9
FB		 1938
1939 if (ds->data) {
1940 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1941 s->ds->linesize);
1942 qemu_free(ds->data);
1943 }
1944 s->ds = saved_ds;
1945}
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