1 /* 2 * QEMU VGA Emulator. 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 #include "hw/hw.h" 25 #include "vga.h" 26 #include "ui/console.h" 27 #include "hw/i386/pc.h" 28 #include "hw/pci/pci.h" 29 #include "vga_int.h" 30 #include "ui/pixel_ops.h" 31 #include "qemu/timer.h" 32 #include "hw/xen/xen.h" 33 #include "trace.h" 34 35 //#define DEBUG_VGA 36 //#define DEBUG_VGA_MEM 37 //#define DEBUG_VGA_REG 38 39 //#define DEBUG_BOCHS_VBE 40 41 /* 16 state changes per vertical frame @60 Hz */ 42 #define VGA_TEXT_CURSOR_PERIOD_MS (1000 * 2 * 16 / 60) 43 44 /* 45 * Video Graphics Array (VGA) 46 * 47 * Chipset docs for original IBM VGA: 48 * http://www.mcamafia.de/pdf/ibm_vgaxga_trm2.pdf 49 * 50 * FreeVGA site: 51 * http://www.osdever.net/FreeVGA/home.htm 52 * 53 * Standard VGA features and Bochs VBE extensions are implemented. 54 */ 55 56 /* force some bits to zero */ 57 const uint8_t sr_mask[8] = { 58 0x03, 59 0x3d, 60 0x0f, 61 0x3f, 62 0x0e, 63 0x00, 64 0x00, 65 0xff, 66 }; 67 68 const uint8_t gr_mask[16] = { 69 0x0f, /* 0x00 */ 70 0x0f, /* 0x01 */ 71 0x0f, /* 0x02 */ 72 0x1f, /* 0x03 */ 73 0x03, /* 0x04 */ 74 0x7b, /* 0x05 */ 75 0x0f, /* 0x06 */ 76 0x0f, /* 0x07 */ 77 0xff, /* 0x08 */ 78 0x00, /* 0x09 */ 79 0x00, /* 0x0a */ 80 0x00, /* 0x0b */ 81 0x00, /* 0x0c */ 82 0x00, /* 0x0d */ 83 0x00, /* 0x0e */ 84 0x00, /* 0x0f */ 85 }; 86 87 #define cbswap_32(__x) \ 88 ((uint32_t)( \ 89 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ 90 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ 91 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ 92 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )) 93 94 #ifdef HOST_WORDS_BIGENDIAN 95 #define PAT(x) cbswap_32(x) 96 #else 97 #define PAT(x) (x) 98 #endif 99 100 #ifdef HOST_WORDS_BIGENDIAN 101 #define BIG 1 102 #else 103 #define BIG 0 104 #endif 105 106 #ifdef HOST_WORDS_BIGENDIAN 107 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff) 108 #else 109 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff) 110 #endif 111 112 static const uint32_t mask16[16] = { 113 PAT(0x00000000), 114 PAT(0x000000ff), 115 PAT(0x0000ff00), 116 PAT(0x0000ffff), 117 PAT(0x00ff0000), 118 PAT(0x00ff00ff), 119 PAT(0x00ffff00), 120 PAT(0x00ffffff), 121 PAT(0xff000000), 122 PAT(0xff0000ff), 123 PAT(0xff00ff00), 124 PAT(0xff00ffff), 125 PAT(0xffff0000), 126 PAT(0xffff00ff), 127 PAT(0xffffff00), 128 PAT(0xffffffff), 129 }; 130 131 #undef PAT 132 133 #ifdef HOST_WORDS_BIGENDIAN 134 #define PAT(x) (x) 135 #else 136 #define PAT(x) cbswap_32(x) 137 #endif 138 139 static const uint32_t dmask16[16] = { 140 PAT(0x00000000), 141 PAT(0x000000ff), 142 PAT(0x0000ff00), 143 PAT(0x0000ffff), 144 PAT(0x00ff0000), 145 PAT(0x00ff00ff), 146 PAT(0x00ffff00), 147 PAT(0x00ffffff), 148 PAT(0xff000000), 149 PAT(0xff0000ff), 150 PAT(0xff00ff00), 151 PAT(0xff00ffff), 152 PAT(0xffff0000), 153 PAT(0xffff00ff), 154 PAT(0xffffff00), 155 PAT(0xffffffff), 156 }; 157 158 static const uint32_t dmask4[4] = { 159 PAT(0x00000000), 160 PAT(0x0000ffff), 161 PAT(0xffff0000), 162 PAT(0xffffffff), 163 }; 164 165 static uint32_t expand4[256]; 166 static uint16_t expand2[256]; 167 static uint8_t expand4to8[16]; 168 169 static void vga_update_memory_access(VGACommonState *s) 170 { 171 MemoryRegion *region, *old_region = s->chain4_alias; 172 hwaddr base, offset, size; 173 174 if (s->legacy_address_space == NULL) { 175 return; 176 } 177 178 s->chain4_alias = NULL; 179 180 if ((s->sr[VGA_SEQ_PLANE_WRITE] & VGA_SR02_ALL_PLANES) == 181 VGA_SR02_ALL_PLANES && s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) { 182 offset = 0; 183 switch ((s->gr[VGA_GFX_MISC] >> 2) & 3) { 184 case 0: 185 base = 0xa0000; 186 size = 0x20000; 187 break; 188 case 1: 189 base = 0xa0000; 190 size = 0x10000; 191 offset = s->bank_offset; 192 break; 193 case 2: 194 base = 0xb0000; 195 size = 0x8000; 196 break; 197 case 3: 198 default: 199 base = 0xb8000; 200 size = 0x8000; 201 break; 202 } 203 base += isa_mem_base; 204 region = g_malloc(sizeof(*region)); 205 memory_region_init_alias(region, memory_region_owner(&s->vram), 206 "vga.chain4", &s->vram, offset, size); 207 memory_region_add_subregion_overlap(s->legacy_address_space, base, 208 region, 2); 209 s->chain4_alias = region; 210 } 211 if (old_region) { 212 memory_region_del_subregion(s->legacy_address_space, old_region); 213 memory_region_destroy(old_region); 214 g_free(old_region); 215 s->plane_updated = 0xf; 216 } 217 } 218 219 static void vga_dumb_update_retrace_info(VGACommonState *s) 220 { 221 (void) s; 222 } 223 224 static void vga_precise_update_retrace_info(VGACommonState *s) 225 { 226 int htotal_chars; 227 int hretr_start_char; 228 int hretr_skew_chars; 229 int hretr_end_char; 230 231 int vtotal_lines; 232 int vretr_start_line; 233 int vretr_end_line; 234 235 int dots; 236 #if 0 237 int div2, sldiv2; 238 #endif 239 int clocking_mode; 240 int clock_sel; 241 const int clk_hz[] = {25175000, 28322000, 25175000, 25175000}; 242 int64_t chars_per_sec; 243 struct vga_precise_retrace *r = &s->retrace_info.precise; 244 245 htotal_chars = s->cr[VGA_CRTC_H_TOTAL] + 5; 246 hretr_start_char = s->cr[VGA_CRTC_H_SYNC_START]; 247 hretr_skew_chars = (s->cr[VGA_CRTC_H_SYNC_END] >> 5) & 3; 248 hretr_end_char = s->cr[VGA_CRTC_H_SYNC_END] & 0x1f; 249 250 vtotal_lines = (s->cr[VGA_CRTC_V_TOTAL] | 251 (((s->cr[VGA_CRTC_OVERFLOW] & 1) | 252 ((s->cr[VGA_CRTC_OVERFLOW] >> 4) & 2)) << 8)) + 2; 253 vretr_start_line = s->cr[VGA_CRTC_V_SYNC_START] | 254 ((((s->cr[VGA_CRTC_OVERFLOW] >> 2) & 1) | 255 ((s->cr[VGA_CRTC_OVERFLOW] >> 6) & 2)) << 8); 256 vretr_end_line = s->cr[VGA_CRTC_V_SYNC_END] & 0xf; 257 258 clocking_mode = (s->sr[VGA_SEQ_CLOCK_MODE] >> 3) & 1; 259 clock_sel = (s->msr >> 2) & 3; 260 dots = (s->msr & 1) ? 8 : 9; 261 262 chars_per_sec = clk_hz[clock_sel] / dots; 263 264 htotal_chars <<= clocking_mode; 265 266 r->total_chars = vtotal_lines * htotal_chars; 267 if (r->freq) { 268 r->ticks_per_char = get_ticks_per_sec() / (r->total_chars * r->freq); 269 } else { 270 r->ticks_per_char = get_ticks_per_sec() / chars_per_sec; 271 } 272 273 r->vstart = vretr_start_line; 274 r->vend = r->vstart + vretr_end_line + 1; 275 276 r->hstart = hretr_start_char + hretr_skew_chars; 277 r->hend = r->hstart + hretr_end_char + 1; 278 r->htotal = htotal_chars; 279 280 #if 0 281 div2 = (s->cr[VGA_CRTC_MODE] >> 2) & 1; 282 sldiv2 = (s->cr[VGA_CRTC_MODE] >> 3) & 1; 283 printf ( 284 "hz=%f\n" 285 "htotal = %d\n" 286 "hretr_start = %d\n" 287 "hretr_skew = %d\n" 288 "hretr_end = %d\n" 289 "vtotal = %d\n" 290 "vretr_start = %d\n" 291 "vretr_end = %d\n" 292 "div2 = %d sldiv2 = %d\n" 293 "clocking_mode = %d\n" 294 "clock_sel = %d %d\n" 295 "dots = %d\n" 296 "ticks/char = %" PRId64 "\n" 297 "\n", 298 (double) get_ticks_per_sec() / (r->ticks_per_char * r->total_chars), 299 htotal_chars, 300 hretr_start_char, 301 hretr_skew_chars, 302 hretr_end_char, 303 vtotal_lines, 304 vretr_start_line, 305 vretr_end_line, 306 div2, sldiv2, 307 clocking_mode, 308 clock_sel, 309 clk_hz[clock_sel], 310 dots, 311 r->ticks_per_char 312 ); 313 #endif 314 } 315 316 static uint8_t vga_precise_retrace(VGACommonState *s) 317 { 318 struct vga_precise_retrace *r = &s->retrace_info.precise; 319 uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE); 320 321 if (r->total_chars) { 322 int cur_line, cur_line_char, cur_char; 323 int64_t cur_tick; 324 325 cur_tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 326 327 cur_char = (cur_tick / r->ticks_per_char) % r->total_chars; 328 cur_line = cur_char / r->htotal; 329 330 if (cur_line >= r->vstart && cur_line <= r->vend) { 331 val |= ST01_V_RETRACE | ST01_DISP_ENABLE; 332 } else { 333 cur_line_char = cur_char % r->htotal; 334 if (cur_line_char >= r->hstart && cur_line_char <= r->hend) { 335 val |= ST01_DISP_ENABLE; 336 } 337 } 338 339 return val; 340 } else { 341 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE); 342 } 343 } 344 345 static uint8_t vga_dumb_retrace(VGACommonState *s) 346 { 347 return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE); 348 } 349 350 int vga_ioport_invalid(VGACommonState *s, uint32_t addr) 351 { 352 if (s->msr & VGA_MIS_COLOR) { 353 /* Color */ 354 return (addr >= 0x3b0 && addr <= 0x3bf); 355 } else { 356 /* Monochrome */ 357 return (addr >= 0x3d0 && addr <= 0x3df); 358 } 359 } 360 361 uint32_t vga_ioport_read(void *opaque, uint32_t addr) 362 { 363 VGACommonState *s = opaque; 364 int val, index; 365 366 if (vga_ioport_invalid(s, addr)) { 367 val = 0xff; 368 } else { 369 switch(addr) { 370 case VGA_ATT_W: 371 if (s->ar_flip_flop == 0) { 372 val = s->ar_index; 373 } else { 374 val = 0; 375 } 376 break; 377 case VGA_ATT_R: 378 index = s->ar_index & 0x1f; 379 if (index < VGA_ATT_C) { 380 val = s->ar[index]; 381 } else { 382 val = 0; 383 } 384 break; 385 case VGA_MIS_W: 386 val = s->st00; 387 break; 388 case VGA_SEQ_I: 389 val = s->sr_index; 390 break; 391 case VGA_SEQ_D: 392 val = s->sr[s->sr_index]; 393 #ifdef DEBUG_VGA_REG 394 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val); 395 #endif 396 break; 397 case VGA_PEL_IR: 398 val = s->dac_state; 399 break; 400 case VGA_PEL_IW: 401 val = s->dac_write_index; 402 break; 403 case VGA_PEL_D: 404 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index]; 405 if (++s->dac_sub_index == 3) { 406 s->dac_sub_index = 0; 407 s->dac_read_index++; 408 } 409 break; 410 case VGA_FTC_R: 411 val = s->fcr; 412 break; 413 case VGA_MIS_R: 414 val = s->msr; 415 break; 416 case VGA_GFX_I: 417 val = s->gr_index; 418 break; 419 case VGA_GFX_D: 420 val = s->gr[s->gr_index]; 421 #ifdef DEBUG_VGA_REG 422 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val); 423 #endif 424 break; 425 case VGA_CRT_IM: 426 case VGA_CRT_IC: 427 val = s->cr_index; 428 break; 429 case VGA_CRT_DM: 430 case VGA_CRT_DC: 431 val = s->cr[s->cr_index]; 432 #ifdef DEBUG_VGA_REG 433 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val); 434 #endif 435 break; 436 case VGA_IS1_RM: 437 case VGA_IS1_RC: 438 /* just toggle to fool polling */ 439 val = s->st01 = s->retrace(s); 440 s->ar_flip_flop = 0; 441 break; 442 default: 443 val = 0x00; 444 break; 445 } 446 } 447 #if defined(DEBUG_VGA) 448 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val); 449 #endif 450 return val; 451 } 452 453 void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val) 454 { 455 VGACommonState *s = opaque; 456 int index; 457 458 /* check port range access depending on color/monochrome mode */ 459 if (vga_ioport_invalid(s, addr)) { 460 return; 461 } 462 #ifdef DEBUG_VGA 463 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val); 464 #endif 465 466 switch(addr) { 467 case VGA_ATT_W: 468 if (s->ar_flip_flop == 0) { 469 val &= 0x3f; 470 s->ar_index = val; 471 } else { 472 index = s->ar_index & 0x1f; 473 switch(index) { 474 case VGA_ATC_PALETTE0 ... VGA_ATC_PALETTEF: 475 s->ar[index] = val & 0x3f; 476 break; 477 case VGA_ATC_MODE: 478 s->ar[index] = val & ~0x10; 479 break; 480 case VGA_ATC_OVERSCAN: 481 s->ar[index] = val; 482 break; 483 case VGA_ATC_PLANE_ENABLE: 484 s->ar[index] = val & ~0xc0; 485 break; 486 case VGA_ATC_PEL: 487 s->ar[index] = val & ~0xf0; 488 break; 489 case VGA_ATC_COLOR_PAGE: 490 s->ar[index] = val & ~0xf0; 491 break; 492 default: 493 break; 494 } 495 } 496 s->ar_flip_flop ^= 1; 497 break; 498 case VGA_MIS_W: 499 s->msr = val & ~0x10; 500 s->update_retrace_info(s); 501 break; 502 case VGA_SEQ_I: 503 s->sr_index = val & 7; 504 break; 505 case VGA_SEQ_D: 506 #ifdef DEBUG_VGA_REG 507 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val); 508 #endif 509 s->sr[s->sr_index] = val & sr_mask[s->sr_index]; 510 if (s->sr_index == VGA_SEQ_CLOCK_MODE) { 511 s->update_retrace_info(s); 512 } 513 vga_update_memory_access(s); 514 break; 515 case VGA_PEL_IR: 516 s->dac_read_index = val; 517 s->dac_sub_index = 0; 518 s->dac_state = 3; 519 break; 520 case VGA_PEL_IW: 521 s->dac_write_index = val; 522 s->dac_sub_index = 0; 523 s->dac_state = 0; 524 break; 525 case VGA_PEL_D: 526 s->dac_cache[s->dac_sub_index] = val; 527 if (++s->dac_sub_index == 3) { 528 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3); 529 s->dac_sub_index = 0; 530 s->dac_write_index++; 531 } 532 break; 533 case VGA_GFX_I: 534 s->gr_index = val & 0x0f; 535 break; 536 case VGA_GFX_D: 537 #ifdef DEBUG_VGA_REG 538 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val); 539 #endif 540 s->gr[s->gr_index] = val & gr_mask[s->gr_index]; 541 vga_update_memory_access(s); 542 break; 543 case VGA_CRT_IM: 544 case VGA_CRT_IC: 545 s->cr_index = val; 546 break; 547 case VGA_CRT_DM: 548 case VGA_CRT_DC: 549 #ifdef DEBUG_VGA_REG 550 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val); 551 #endif 552 /* handle CR0-7 protection */ 553 if ((s->cr[VGA_CRTC_V_SYNC_END] & VGA_CR11_LOCK_CR0_CR7) && 554 s->cr_index <= VGA_CRTC_OVERFLOW) { 555 /* can always write bit 4 of CR7 */ 556 if (s->cr_index == VGA_CRTC_OVERFLOW) { 557 s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x10) | 558 (val & 0x10); 559 } 560 return; 561 } 562 s->cr[s->cr_index] = val; 563 564 switch(s->cr_index) { 565 case VGA_CRTC_H_TOTAL: 566 case VGA_CRTC_H_SYNC_START: 567 case VGA_CRTC_H_SYNC_END: 568 case VGA_CRTC_V_TOTAL: 569 case VGA_CRTC_OVERFLOW: 570 case VGA_CRTC_V_SYNC_END: 571 case VGA_CRTC_MODE: 572 s->update_retrace_info(s); 573 break; 574 } 575 break; 576 case VGA_IS1_RM: 577 case VGA_IS1_RC: 578 s->fcr = val & 0x10; 579 break; 580 } 581 } 582 583 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr) 584 { 585 VGACommonState *s = opaque; 586 uint32_t val; 587 val = s->vbe_index; 588 return val; 589 } 590 591 uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) 592 { 593 VGACommonState *s = opaque; 594 uint32_t val; 595 596 if (s->vbe_index < VBE_DISPI_INDEX_NB) { 597 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) { 598 switch(s->vbe_index) { 599 /* XXX: do not hardcode ? */ 600 case VBE_DISPI_INDEX_XRES: 601 val = VBE_DISPI_MAX_XRES; 602 break; 603 case VBE_DISPI_INDEX_YRES: 604 val = VBE_DISPI_MAX_YRES; 605 break; 606 case VBE_DISPI_INDEX_BPP: 607 val = VBE_DISPI_MAX_BPP; 608 break; 609 default: 610 val = s->vbe_regs[s->vbe_index]; 611 break; 612 } 613 } else { 614 val = s->vbe_regs[s->vbe_index]; 615 } 616 } else if (s->vbe_index == VBE_DISPI_INDEX_VIDEO_MEMORY_64K) { 617 val = s->vram_size / (64 * 1024); 618 } else { 619 val = 0; 620 } 621 #ifdef DEBUG_BOCHS_VBE 622 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val); 623 #endif 624 return val; 625 } 626 627 void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val) 628 { 629 VGACommonState *s = opaque; 630 s->vbe_index = val; 631 } 632 633 void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) 634 { 635 VGACommonState *s = opaque; 636 637 if (s->vbe_index <= VBE_DISPI_INDEX_NB) { 638 #ifdef DEBUG_BOCHS_VBE 639 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val); 640 #endif 641 switch(s->vbe_index) { 642 case VBE_DISPI_INDEX_ID: 643 if (val == VBE_DISPI_ID0 || 644 val == VBE_DISPI_ID1 || 645 val == VBE_DISPI_ID2 || 646 val == VBE_DISPI_ID3 || 647 val == VBE_DISPI_ID4) { 648 s->vbe_regs[s->vbe_index] = val; 649 } 650 break; 651 case VBE_DISPI_INDEX_XRES: 652 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { 653 s->vbe_regs[s->vbe_index] = val; 654 } 655 break; 656 case VBE_DISPI_INDEX_YRES: 657 if (val <= VBE_DISPI_MAX_YRES) { 658 s->vbe_regs[s->vbe_index] = val; 659 } 660 break; 661 case VBE_DISPI_INDEX_BPP: 662 if (val == 0) 663 val = 8; 664 if (val == 4 || val == 8 || val == 15 || 665 val == 16 || val == 24 || val == 32) { 666 s->vbe_regs[s->vbe_index] = val; 667 } 668 break; 669 case VBE_DISPI_INDEX_BANK: 670 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { 671 val &= (s->vbe_bank_mask >> 2); 672 } else { 673 val &= s->vbe_bank_mask; 674 } 675 s->vbe_regs[s->vbe_index] = val; 676 s->bank_offset = (val << 16); 677 vga_update_memory_access(s); 678 break; 679 case VBE_DISPI_INDEX_ENABLE: 680 if ((val & VBE_DISPI_ENABLED) && 681 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) { 682 int h, shift_control; 683 684 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = 685 s->vbe_regs[VBE_DISPI_INDEX_XRES]; 686 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = 687 s->vbe_regs[VBE_DISPI_INDEX_YRES]; 688 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0; 689 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0; 690 691 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) 692 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1; 693 else 694 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * 695 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); 696 s->vbe_start_addr = 0; 697 698 /* clear the screen (should be done in BIOS) */ 699 if (!(val & VBE_DISPI_NOCLEARMEM)) { 700 memset(s->vram_ptr, 0, 701 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); 702 } 703 704 /* we initialize the VGA graphic mode (should be done 705 in BIOS) */ 706 /* graphic mode + memory map 1 */ 707 s->gr[VGA_GFX_MISC] = (s->gr[VGA_GFX_MISC] & ~0x0c) | 0x04 | 708 VGA_GR06_GRAPHICS_MODE; 709 s->cr[VGA_CRTC_MODE] |= 3; /* no CGA modes */ 710 s->cr[VGA_CRTC_OFFSET] = s->vbe_line_offset >> 3; 711 /* width */ 712 s->cr[VGA_CRTC_H_DISP] = 713 (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; 714 /* height (only meaningful if < 1024) */ 715 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1; 716 s->cr[VGA_CRTC_V_DISP_END] = h; 717 s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x42) | 718 ((h >> 7) & 0x02) | ((h >> 3) & 0x40); 719 /* line compare to 1023 */ 720 s->cr[VGA_CRTC_LINE_COMPARE] = 0xff; 721 s->cr[VGA_CRTC_OVERFLOW] |= 0x10; 722 s->cr[VGA_CRTC_MAX_SCAN] |= 0x40; 723 724 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { 725 shift_control = 0; 726 s->sr[VGA_SEQ_CLOCK_MODE] &= ~8; /* no double line */ 727 } else { 728 shift_control = 2; 729 /* set chain 4 mode */ 730 s->sr[VGA_SEQ_MEMORY_MODE] |= VGA_SR04_CHN_4M; 731 /* activate all planes */ 732 s->sr[VGA_SEQ_PLANE_WRITE] |= VGA_SR02_ALL_PLANES; 733 } 734 s->gr[VGA_GFX_MODE] = (s->gr[VGA_GFX_MODE] & ~0x60) | 735 (shift_control << 5); 736 s->cr[VGA_CRTC_MAX_SCAN] &= ~0x9f; /* no double scan */ 737 } else { 738 /* XXX: the bios should do that */ 739 s->bank_offset = 0; 740 } 741 s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0; 742 s->vbe_regs[s->vbe_index] = val; 743 vga_update_memory_access(s); 744 break; 745 case VBE_DISPI_INDEX_VIRT_WIDTH: 746 { 747 int w, h, line_offset; 748 749 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES]) 750 return; 751 w = val; 752 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) 753 line_offset = w >> 1; 754 else 755 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); 756 h = s->vram_size / line_offset; 757 /* XXX: support weird bochs semantics ? */ 758 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES]) 759 return; 760 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; 761 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; 762 s->vbe_line_offset = line_offset; 763 } 764 break; 765 case VBE_DISPI_INDEX_X_OFFSET: 766 case VBE_DISPI_INDEX_Y_OFFSET: 767 { 768 int x; 769 s->vbe_regs[s->vbe_index] = val; 770 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; 771 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; 772 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) 773 s->vbe_start_addr += x >> 1; 774 else 775 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); 776 s->vbe_start_addr >>= 2; 777 } 778 break; 779 default: 780 break; 781 } 782 } 783 } 784 785 /* called for accesses between 0xa0000 and 0xc0000 */ 786 uint32_t vga_mem_readb(VGACommonState *s, hwaddr addr) 787 { 788 int memory_map_mode, plane; 789 uint32_t ret; 790 791 /* convert to VGA memory offset */ 792 memory_map_mode = (s->gr[VGA_GFX_MISC] >> 2) & 3; 793 addr &= 0x1ffff; 794 switch(memory_map_mode) { 795 case 0: 796 break; 797 case 1: 798 if (addr >= 0x10000) 799 return 0xff; 800 addr += s->bank_offset; 801 break; 802 case 2: 803 addr -= 0x10000; 804 if (addr >= 0x8000) 805 return 0xff; 806 break; 807 default: 808 case 3: 809 addr -= 0x18000; 810 if (addr >= 0x8000) 811 return 0xff; 812 break; 813 } 814 815 if (s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) { 816 /* chain 4 mode : simplest access */ 817 ret = s->vram_ptr[addr]; 818 } else if (s->gr[VGA_GFX_MODE] & 0x10) { 819 /* odd/even mode (aka text mode mapping) */ 820 plane = (s->gr[VGA_GFX_PLANE_READ] & 2) | (addr & 1); 821 ret = s->vram_ptr[((addr & ~1) << 1) | plane]; 822 } else { 823 /* standard VGA latched access */ 824 s->latch = ((uint32_t *)s->vram_ptr)[addr]; 825 826 if (!(s->gr[VGA_GFX_MODE] & 0x08)) { 827 /* read mode 0 */ 828 plane = s->gr[VGA_GFX_PLANE_READ]; 829 ret = GET_PLANE(s->latch, plane); 830 } else { 831 /* read mode 1 */ 832 ret = (s->latch ^ mask16[s->gr[VGA_GFX_COMPARE_VALUE]]) & 833 mask16[s->gr[VGA_GFX_COMPARE_MASK]]; 834 ret |= ret >> 16; 835 ret |= ret >> 8; 836 ret = (~ret) & 0xff; 837 } 838 } 839 return ret; 840 } 841 842 /* called for accesses between 0xa0000 and 0xc0000 */ 843 void vga_mem_writeb(VGACommonState *s, hwaddr addr, uint32_t val) 844 { 845 int memory_map_mode, plane, write_mode, b, func_select, mask; 846 uint32_t write_mask, bit_mask, set_mask; 847 848 #ifdef DEBUG_VGA_MEM 849 printf("vga: [0x" TARGET_FMT_plx "] = 0x%02x\n", addr, val); 850 #endif 851 /* convert to VGA memory offset */ 852 memory_map_mode = (s->gr[VGA_GFX_MISC] >> 2) & 3; 853 addr &= 0x1ffff; 854 switch(memory_map_mode) { 855 case 0: 856 break; 857 case 1: 858 if (addr >= 0x10000) 859 return; 860 addr += s->bank_offset; 861 break; 862 case 2: 863 addr -= 0x10000; 864 if (addr >= 0x8000) 865 return; 866 break; 867 default: 868 case 3: 869 addr -= 0x18000; 870 if (addr >= 0x8000) 871 return; 872 break; 873 } 874 875 if (s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) { 876 /* chain 4 mode : simplest access */ 877 plane = addr & 3; 878 mask = (1 << plane); 879 if (s->sr[VGA_SEQ_PLANE_WRITE] & mask) { 880 s->vram_ptr[addr] = val; 881 #ifdef DEBUG_VGA_MEM 882 printf("vga: chain4: [0x" TARGET_FMT_plx "]\n", addr); 883 #endif 884 s->plane_updated |= mask; /* only used to detect font change */ 885 memory_region_set_dirty(&s->vram, addr, 1); 886 } 887 } else if (s->gr[VGA_GFX_MODE] & 0x10) { 888 /* odd/even mode (aka text mode mapping) */ 889 plane = (s->gr[VGA_GFX_PLANE_READ] & 2) | (addr & 1); 890 mask = (1 << plane); 891 if (s->sr[VGA_SEQ_PLANE_WRITE] & mask) { 892 addr = ((addr & ~1) << 1) | plane; 893 s->vram_ptr[addr] = val; 894 #ifdef DEBUG_VGA_MEM 895 printf("vga: odd/even: [0x" TARGET_FMT_plx "]\n", addr); 896 #endif 897 s->plane_updated |= mask; /* only used to detect font change */ 898 memory_region_set_dirty(&s->vram, addr, 1); 899 } 900 } else { 901 /* standard VGA latched access */ 902 write_mode = s->gr[VGA_GFX_MODE] & 3; 903 switch(write_mode) { 904 default: 905 case 0: 906 /* rotate */ 907 b = s->gr[VGA_GFX_DATA_ROTATE] & 7; 908 val = ((val >> b) | (val << (8 - b))) & 0xff; 909 val |= val << 8; 910 val |= val << 16; 911 912 /* apply set/reset mask */ 913 set_mask = mask16[s->gr[VGA_GFX_SR_ENABLE]]; 914 val = (val & ~set_mask) | 915 (mask16[s->gr[VGA_GFX_SR_VALUE]] & set_mask); 916 bit_mask = s->gr[VGA_GFX_BIT_MASK]; 917 break; 918 case 1: 919 val = s->latch; 920 goto do_write; 921 case 2: 922 val = mask16[val & 0x0f]; 923 bit_mask = s->gr[VGA_GFX_BIT_MASK]; 924 break; 925 case 3: 926 /* rotate */ 927 b = s->gr[VGA_GFX_DATA_ROTATE] & 7; 928 val = (val >> b) | (val << (8 - b)); 929 930 bit_mask = s->gr[VGA_GFX_BIT_MASK] & val; 931 val = mask16[s->gr[VGA_GFX_SR_VALUE]]; 932 break; 933 } 934 935 /* apply logical operation */ 936 func_select = s->gr[VGA_GFX_DATA_ROTATE] >> 3; 937 switch(func_select) { 938 case 0: 939 default: 940 /* nothing to do */ 941 break; 942 case 1: 943 /* and */ 944 val &= s->latch; 945 break; 946 case 2: 947 /* or */ 948 val |= s->latch; 949 break; 950 case 3: 951 /* xor */ 952 val ^= s->latch; 953 break; 954 } 955 956 /* apply bit mask */ 957 bit_mask |= bit_mask << 8; 958 bit_mask |= bit_mask << 16; 959 val = (val & bit_mask) | (s->latch & ~bit_mask); 960 961 do_write: 962 /* mask data according to sr[2] */ 963 mask = s->sr[VGA_SEQ_PLANE_WRITE]; 964 s->plane_updated |= mask; /* only used to detect font change */ 965 write_mask = mask16[mask]; 966 ((uint32_t *)s->vram_ptr)[addr] = 967 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | 968 (val & write_mask); 969 #ifdef DEBUG_VGA_MEM 970 printf("vga: latch: [0x" TARGET_FMT_plx "] mask=0x%08x val=0x%08x\n", 971 addr * 4, write_mask, val); 972 #endif 973 memory_region_set_dirty(&s->vram, addr << 2, sizeof(uint32_t)); 974 } 975 } 976 977 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, 978 const uint8_t *font_ptr, int h, 979 uint32_t fgcol, uint32_t bgcol); 980 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, 981 const uint8_t *font_ptr, int h, 982 uint32_t fgcol, uint32_t bgcol, int dup9); 983 typedef void vga_draw_line_func(VGACommonState *s1, uint8_t *d, 984 const uint8_t *s, int width); 985 986 #define DEPTH 8 987 #include "vga_template.h" 988 989 #define DEPTH 15 990 #include "vga_template.h" 991 992 #define BGR_FORMAT 993 #define DEPTH 15 994 #include "vga_template.h" 995 996 #define DEPTH 16 997 #include "vga_template.h" 998 999 #define BGR_FORMAT 1000 #define DEPTH 16 1001 #include "vga_template.h" 1002 1003 #define DEPTH 32 1004 #include "vga_template.h" 1005 1006 #define BGR_FORMAT 1007 #define DEPTH 32 1008 #include "vga_template.h" 1009 1010 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) 1011 { 1012 unsigned int col; 1013 col = rgb_to_pixel8(r, g, b); 1014 col |= col << 8; 1015 col |= col << 16; 1016 return col; 1017 } 1018 1019 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) 1020 { 1021 unsigned int col; 1022 col = rgb_to_pixel15(r, g, b); 1023 col |= col << 16; 1024 return col; 1025 } 1026 1027 static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g, 1028 unsigned int b) 1029 { 1030 unsigned int col; 1031 col = rgb_to_pixel15bgr(r, g, b); 1032 col |= col << 16; 1033 return col; 1034 } 1035 1036 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) 1037 { 1038 unsigned int col; 1039 col = rgb_to_pixel16(r, g, b); 1040 col |= col << 16; 1041 return col; 1042 } 1043 1044 static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g, 1045 unsigned int b) 1046 { 1047 unsigned int col; 1048 col = rgb_to_pixel16bgr(r, g, b); 1049 col |= col << 16; 1050 return col; 1051 } 1052 1053 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) 1054 { 1055 unsigned int col; 1056 col = rgb_to_pixel32(r, g, b); 1057 return col; 1058 } 1059 1060 static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b) 1061 { 1062 unsigned int col; 1063 col = rgb_to_pixel32bgr(r, g, b); 1064 return col; 1065 } 1066 1067 /* return true if the palette was modified */ 1068 static int update_palette16(VGACommonState *s) 1069 { 1070 int full_update, i; 1071 uint32_t v, col, *palette; 1072 1073 full_update = 0; 1074 palette = s->last_palette; 1075 for(i = 0; i < 16; i++) { 1076 v = s->ar[i]; 1077 if (s->ar[VGA_ATC_MODE] & 0x80) { 1078 v = ((s->ar[VGA_ATC_COLOR_PAGE] & 0xf) << 4) | (v & 0xf); 1079 } else { 1080 v = ((s->ar[VGA_ATC_COLOR_PAGE] & 0xc) << 4) | (v & 0x3f); 1081 } 1082 v = v * 3; 1083 col = s->rgb_to_pixel(c6_to_8(s->palette[v]), 1084 c6_to_8(s->palette[v + 1]), 1085 c6_to_8(s->palette[v + 2])); 1086 if (col != palette[i]) { 1087 full_update = 1; 1088 palette[i] = col; 1089 } 1090 } 1091 return full_update; 1092 } 1093 1094 /* return true if the palette was modified */ 1095 static int update_palette256(VGACommonState *s) 1096 { 1097 int full_update, i; 1098 uint32_t v, col, *palette; 1099 1100 full_update = 0; 1101 palette = s->last_palette; 1102 v = 0; 1103 for(i = 0; i < 256; i++) { 1104 if (s->dac_8bit) { 1105 col = s->rgb_to_pixel(s->palette[v], 1106 s->palette[v + 1], 1107 s->palette[v + 2]); 1108 } else { 1109 col = s->rgb_to_pixel(c6_to_8(s->palette[v]), 1110 c6_to_8(s->palette[v + 1]), 1111 c6_to_8(s->palette[v + 2])); 1112 } 1113 if (col != palette[i]) { 1114 full_update = 1; 1115 palette[i] = col; 1116 } 1117 v += 3; 1118 } 1119 return full_update; 1120 } 1121 1122 static void vga_get_offsets(VGACommonState *s, 1123 uint32_t *pline_offset, 1124 uint32_t *pstart_addr, 1125 uint32_t *pline_compare) 1126 { 1127 uint32_t start_addr, line_offset, line_compare; 1128 1129 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { 1130 line_offset = s->vbe_line_offset; 1131 start_addr = s->vbe_start_addr; 1132 line_compare = 65535; 1133 } else { 1134 /* compute line_offset in bytes */ 1135 line_offset = s->cr[VGA_CRTC_OFFSET]; 1136 line_offset <<= 3; 1137 1138 /* starting address */ 1139 start_addr = s->cr[VGA_CRTC_START_LO] | 1140 (s->cr[VGA_CRTC_START_HI] << 8); 1141 1142 /* line compare */ 1143 line_compare = s->cr[VGA_CRTC_LINE_COMPARE] | 1144 ((s->cr[VGA_CRTC_OVERFLOW] & 0x10) << 4) | 1145 ((s->cr[VGA_CRTC_MAX_SCAN] & 0x40) << 3); 1146 } 1147 *pline_offset = line_offset; 1148 *pstart_addr = start_addr; 1149 *pline_compare = line_compare; 1150 } 1151 1152 /* update start_addr and line_offset. Return TRUE if modified */ 1153 static int update_basic_params(VGACommonState *s) 1154 { 1155 int full_update; 1156 uint32_t start_addr, line_offset, line_compare; 1157 1158 full_update = 0; 1159 1160 s->get_offsets(s, &line_offset, &start_addr, &line_compare); 1161 1162 if (line_offset != s->line_offset || 1163 start_addr != s->start_addr || 1164 line_compare != s->line_compare) { 1165 s->line_offset = line_offset; 1166 s->start_addr = start_addr; 1167 s->line_compare = line_compare; 1168 full_update = 1; 1169 } 1170 return full_update; 1171 } 1172 1173 #define NB_DEPTHS 7 1174 1175 static inline int get_depth_index(DisplaySurface *s) 1176 { 1177 switch (surface_bits_per_pixel(s)) { 1178 default: 1179 case 8: 1180 return 0; 1181 case 15: 1182 return 1; 1183 case 16: 1184 return 2; 1185 case 32: 1186 if (is_surface_bgr(s)) { 1187 return 4; 1188 } else { 1189 return 3; 1190 } 1191 } 1192 } 1193 1194 static vga_draw_glyph8_func * const vga_draw_glyph8_table[NB_DEPTHS] = { 1195 vga_draw_glyph8_8, 1196 vga_draw_glyph8_16, 1197 vga_draw_glyph8_16, 1198 vga_draw_glyph8_32, 1199 vga_draw_glyph8_32, 1200 vga_draw_glyph8_16, 1201 vga_draw_glyph8_16, 1202 }; 1203 1204 static vga_draw_glyph8_func * const vga_draw_glyph16_table[NB_DEPTHS] = { 1205 vga_draw_glyph16_8, 1206 vga_draw_glyph16_16, 1207 vga_draw_glyph16_16, 1208 vga_draw_glyph16_32, 1209 vga_draw_glyph16_32, 1210 vga_draw_glyph16_16, 1211 vga_draw_glyph16_16, 1212 }; 1213 1214 static vga_draw_glyph9_func * const vga_draw_glyph9_table[NB_DEPTHS] = { 1215 vga_draw_glyph9_8, 1216 vga_draw_glyph9_16, 1217 vga_draw_glyph9_16, 1218 vga_draw_glyph9_32, 1219 vga_draw_glyph9_32, 1220 vga_draw_glyph9_16, 1221 vga_draw_glyph9_16, 1222 }; 1223 1224 static const uint8_t cursor_glyph[32 * 4] = { 1225 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1226 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1227 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1228 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1229 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1230 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1231 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1232 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1233 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1234 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1235 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1236 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1237 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1238 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1239 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1240 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 1241 }; 1242 1243 static void vga_get_text_resolution(VGACommonState *s, int *pwidth, int *pheight, 1244 int *pcwidth, int *pcheight) 1245 { 1246 int width, cwidth, height, cheight; 1247 1248 /* total width & height */ 1249 cheight = (s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1; 1250 cwidth = 8; 1251 if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) { 1252 cwidth = 9; 1253 } 1254 if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) { 1255 cwidth = 16; /* NOTE: no 18 pixel wide */ 1256 } 1257 width = (s->cr[VGA_CRTC_H_DISP] + 1); 1258 if (s->cr[VGA_CRTC_V_TOTAL] == 100) { 1259 /* ugly hack for CGA 160x100x16 - explain me the logic */ 1260 height = 100; 1261 } else { 1262 height = s->cr[VGA_CRTC_V_DISP_END] | 1263 ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | 1264 ((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); 1265 height = (height + 1) / cheight; 1266 } 1267 1268 *pwidth = width; 1269 *pheight = height; 1270 *pcwidth = cwidth; 1271 *pcheight = cheight; 1272 } 1273 1274 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b); 1275 1276 static rgb_to_pixel_dup_func * const rgb_to_pixel_dup_table[NB_DEPTHS] = { 1277 rgb_to_pixel8_dup, 1278 rgb_to_pixel15_dup, 1279 rgb_to_pixel16_dup, 1280 rgb_to_pixel32_dup, 1281 rgb_to_pixel32bgr_dup, 1282 rgb_to_pixel15bgr_dup, 1283 rgb_to_pixel16bgr_dup, 1284 }; 1285 1286 /* 1287 * Text mode update 1288 * Missing: 1289 * - double scan 1290 * - double width 1291 * - underline 1292 * - flashing 1293 */ 1294 static void vga_draw_text(VGACommonState *s, int full_update) 1295 { 1296 DisplaySurface *surface = qemu_console_surface(s->con); 1297 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr; 1298 int cx_min, cx_max, linesize, x_incr, line, line1; 1299 uint32_t offset, fgcol, bgcol, v, cursor_offset; 1300 uint8_t *d1, *d, *src, *dest, *cursor_ptr; 1301 const uint8_t *font_ptr, *font_base[2]; 1302 int dup9, line_offset, depth_index; 1303 uint32_t *palette; 1304 uint32_t *ch_attr_ptr; 1305 vga_draw_glyph8_func *vga_draw_glyph8; 1306 vga_draw_glyph9_func *vga_draw_glyph9; 1307 int64_t now = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 1308 1309 /* compute font data address (in plane 2) */ 1310 v = s->sr[VGA_SEQ_CHARACTER_MAP]; 1311 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; 1312 if (offset != s->font_offsets[0]) { 1313 s->font_offsets[0] = offset; 1314 full_update = 1; 1315 } 1316 font_base[0] = s->vram_ptr + offset; 1317 1318 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; 1319 font_base[1] = s->vram_ptr + offset; 1320 if (offset != s->font_offsets[1]) { 1321 s->font_offsets[1] = offset; 1322 full_update = 1; 1323 } 1324 if (s->plane_updated & (1 << 2) || s->chain4_alias) { 1325 /* if the plane 2 was modified since the last display, it 1326 indicates the font may have been modified */ 1327 s->plane_updated = 0; 1328 full_update = 1; 1329 } 1330 full_update |= update_basic_params(s); 1331 1332 line_offset = s->line_offset; 1333 1334 vga_get_text_resolution(s, &width, &height, &cw, &cheight); 1335 if ((height * width) <= 1) { 1336 /* better than nothing: exit if transient size is too small */ 1337 return; 1338 } 1339 if ((height * width) > CH_ATTR_SIZE) { 1340 /* better than nothing: exit if transient size is too big */ 1341 return; 1342 } 1343 1344 if (width != s->last_width || height != s->last_height || 1345 cw != s->last_cw || cheight != s->last_ch || s->last_depth) { 1346 s->last_scr_width = width * cw; 1347 s->last_scr_height = height * cheight; 1348 qemu_console_resize(s->con, s->last_scr_width, s->last_scr_height); 1349 surface = qemu_console_surface(s->con); 1350 dpy_text_resize(s->con, width, height); 1351 s->last_depth = 0; 1352 s->last_width = width; 1353 s->last_height = height; 1354 s->last_ch = cheight; 1355 s->last_cw = cw; 1356 full_update = 1; 1357 } 1358 s->rgb_to_pixel = 1359 rgb_to_pixel_dup_table[get_depth_index(surface)]; 1360 full_update |= update_palette16(s); 1361 palette = s->last_palette; 1362 x_incr = cw * surface_bytes_per_pixel(surface); 1363 1364 if (full_update) { 1365 s->full_update_text = 1; 1366 } 1367 if (s->full_update_gfx) { 1368 s->full_update_gfx = 0; 1369 full_update |= 1; 1370 } 1371 1372 cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) | 1373 s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr; 1374 if (cursor_offset != s->cursor_offset || 1375 s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start || 1376 s->cr[VGA_CRTC_CURSOR_END] != s->cursor_end) { 1377 /* if the cursor position changed, we update the old and new 1378 chars */ 1379 if (s->cursor_offset < CH_ATTR_SIZE) 1380 s->last_ch_attr[s->cursor_offset] = -1; 1381 if (cursor_offset < CH_ATTR_SIZE) 1382 s->last_ch_attr[cursor_offset] = -1; 1383 s->cursor_offset = cursor_offset; 1384 s->cursor_start = s->cr[VGA_CRTC_CURSOR_START]; 1385 s->cursor_end = s->cr[VGA_CRTC_CURSOR_END]; 1386 } 1387 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4; 1388 if (now >= s->cursor_blink_time) { 1389 s->cursor_blink_time = now + VGA_TEXT_CURSOR_PERIOD_MS / 2; 1390 s->cursor_visible_phase = !s->cursor_visible_phase; 1391 } 1392 1393 depth_index = get_depth_index(surface); 1394 if (cw == 16) 1395 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; 1396 else 1397 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; 1398 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; 1399 1400 dest = surface_data(surface); 1401 linesize = surface_stride(surface); 1402 ch_attr_ptr = s->last_ch_attr; 1403 line = 0; 1404 offset = s->start_addr * 4; 1405 for(cy = 0; cy < height; cy++) { 1406 d1 = dest; 1407 src = s->vram_ptr + offset; 1408 cx_min = width; 1409 cx_max = -1; 1410 for(cx = 0; cx < width; cx++) { 1411 ch_attr = *(uint16_t *)src; 1412 if (full_update || ch_attr != *ch_attr_ptr || src == cursor_ptr) { 1413 if (cx < cx_min) 1414 cx_min = cx; 1415 if (cx > cx_max) 1416 cx_max = cx; 1417 *ch_attr_ptr = ch_attr; 1418 #ifdef HOST_WORDS_BIGENDIAN 1419 ch = ch_attr >> 8; 1420 cattr = ch_attr & 0xff; 1421 #else 1422 ch = ch_attr & 0xff; 1423 cattr = ch_attr >> 8; 1424 #endif 1425 font_ptr = font_base[(cattr >> 3) & 1]; 1426 font_ptr += 32 * 4 * ch; 1427 bgcol = palette[cattr >> 4]; 1428 fgcol = palette[cattr & 0x0f]; 1429 if (cw != 9) { 1430 vga_draw_glyph8(d1, linesize, 1431 font_ptr, cheight, fgcol, bgcol); 1432 } else { 1433 dup9 = 0; 1434 if (ch >= 0xb0 && ch <= 0xdf && 1435 (s->ar[VGA_ATC_MODE] & 0x04)) { 1436 dup9 = 1; 1437 } 1438 vga_draw_glyph9(d1, linesize, 1439 font_ptr, cheight, fgcol, bgcol, dup9); 1440 } 1441 if (src == cursor_ptr && 1442 !(s->cr[VGA_CRTC_CURSOR_START] & 0x20) && 1443 s->cursor_visible_phase) { 1444 int line_start, line_last, h; 1445 /* draw the cursor */ 1446 line_start = s->cr[VGA_CRTC_CURSOR_START] & 0x1f; 1447 line_last = s->cr[VGA_CRTC_CURSOR_END] & 0x1f; 1448 /* XXX: check that */ 1449 if (line_last > cheight - 1) 1450 line_last = cheight - 1; 1451 if (line_last >= line_start && line_start < cheight) { 1452 h = line_last - line_start + 1; 1453 d = d1 + linesize * line_start; 1454 if (cw != 9) { 1455 vga_draw_glyph8(d, linesize, 1456 cursor_glyph, h, fgcol, bgcol); 1457 } else { 1458 vga_draw_glyph9(d, linesize, 1459 cursor_glyph, h, fgcol, bgcol, 1); 1460 } 1461 } 1462 } 1463 } 1464 d1 += x_incr; 1465 src += 4; 1466 ch_attr_ptr++; 1467 } 1468 if (cx_max != -1) { 1469 dpy_gfx_update(s->con, cx_min * cw, cy * cheight, 1470 (cx_max - cx_min + 1) * cw, cheight); 1471 } 1472 dest += linesize * cheight; 1473 line1 = line + cheight; 1474 offset += line_offset; 1475 if (line < s->line_compare && line1 >= s->line_compare) { 1476 offset = 0; 1477 } 1478 line = line1; 1479 } 1480 } 1481 1482 enum { 1483 VGA_DRAW_LINE2, 1484 VGA_DRAW_LINE2D2, 1485 VGA_DRAW_LINE4, 1486 VGA_DRAW_LINE4D2, 1487 VGA_DRAW_LINE8D2, 1488 VGA_DRAW_LINE8, 1489 VGA_DRAW_LINE15, 1490 VGA_DRAW_LINE16, 1491 VGA_DRAW_LINE24, 1492 VGA_DRAW_LINE32, 1493 VGA_DRAW_LINE_NB, 1494 }; 1495 1496 static vga_draw_line_func * const vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = { 1497 vga_draw_line2_8, 1498 vga_draw_line2_16, 1499 vga_draw_line2_16, 1500 vga_draw_line2_32, 1501 vga_draw_line2_32, 1502 vga_draw_line2_16, 1503 vga_draw_line2_16, 1504 1505 vga_draw_line2d2_8, 1506 vga_draw_line2d2_16, 1507 vga_draw_line2d2_16, 1508 vga_draw_line2d2_32, 1509 vga_draw_line2d2_32, 1510 vga_draw_line2d2_16, 1511 vga_draw_line2d2_16, 1512 1513 vga_draw_line4_8, 1514 vga_draw_line4_16, 1515 vga_draw_line4_16, 1516 vga_draw_line4_32, 1517 vga_draw_line4_32, 1518 vga_draw_line4_16, 1519 vga_draw_line4_16, 1520 1521 vga_draw_line4d2_8, 1522 vga_draw_line4d2_16, 1523 vga_draw_line4d2_16, 1524 vga_draw_line4d2_32, 1525 vga_draw_line4d2_32, 1526 vga_draw_line4d2_16, 1527 vga_draw_line4d2_16, 1528 1529 vga_draw_line8d2_8, 1530 vga_draw_line8d2_16, 1531 vga_draw_line8d2_16, 1532 vga_draw_line8d2_32, 1533 vga_draw_line8d2_32, 1534 vga_draw_line8d2_16, 1535 vga_draw_line8d2_16, 1536 1537 vga_draw_line8_8, 1538 vga_draw_line8_16, 1539 vga_draw_line8_16, 1540 vga_draw_line8_32, 1541 vga_draw_line8_32, 1542 vga_draw_line8_16, 1543 vga_draw_line8_16, 1544 1545 vga_draw_line15_8, 1546 vga_draw_line15_15, 1547 vga_draw_line15_16, 1548 vga_draw_line15_32, 1549 vga_draw_line15_32bgr, 1550 vga_draw_line15_15bgr, 1551 vga_draw_line15_16bgr, 1552 1553 vga_draw_line16_8, 1554 vga_draw_line16_15, 1555 vga_draw_line16_16, 1556 vga_draw_line16_32, 1557 vga_draw_line16_32bgr, 1558 vga_draw_line16_15bgr, 1559 vga_draw_line16_16bgr, 1560 1561 vga_draw_line24_8, 1562 vga_draw_line24_15, 1563 vga_draw_line24_16, 1564 vga_draw_line24_32, 1565 vga_draw_line24_32bgr, 1566 vga_draw_line24_15bgr, 1567 vga_draw_line24_16bgr, 1568 1569 vga_draw_line32_8, 1570 vga_draw_line32_15, 1571 vga_draw_line32_16, 1572 vga_draw_line32_32, 1573 vga_draw_line32_32bgr, 1574 vga_draw_line32_15bgr, 1575 vga_draw_line32_16bgr, 1576 }; 1577 1578 static int vga_get_bpp(VGACommonState *s) 1579 { 1580 int ret; 1581 1582 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { 1583 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; 1584 } else { 1585 ret = 0; 1586 } 1587 return ret; 1588 } 1589 1590 static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight) 1591 { 1592 int width, height; 1593 1594 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { 1595 width = s->vbe_regs[VBE_DISPI_INDEX_XRES]; 1596 height = s->vbe_regs[VBE_DISPI_INDEX_YRES]; 1597 } else { 1598 width = (s->cr[VGA_CRTC_H_DISP] + 1) * 8; 1599 height = s->cr[VGA_CRTC_V_DISP_END] | 1600 ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | 1601 ((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); 1602 height = (height + 1); 1603 } 1604 *pwidth = width; 1605 *pheight = height; 1606 } 1607 1608 void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2) 1609 { 1610 int y; 1611 if (y1 >= VGA_MAX_HEIGHT) 1612 return; 1613 if (y2 >= VGA_MAX_HEIGHT) 1614 y2 = VGA_MAX_HEIGHT; 1615 for(y = y1; y < y2; y++) { 1616 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f); 1617 } 1618 } 1619 1620 void vga_sync_dirty_bitmap(VGACommonState *s) 1621 { 1622 memory_region_sync_dirty_bitmap(&s->vram); 1623 } 1624 1625 void vga_dirty_log_start(VGACommonState *s) 1626 { 1627 memory_region_set_log(&s->vram, true, DIRTY_MEMORY_VGA); 1628 } 1629 1630 void vga_dirty_log_stop(VGACommonState *s) 1631 { 1632 memory_region_set_log(&s->vram, false, DIRTY_MEMORY_VGA); 1633 } 1634 1635 /* 1636 * graphic modes 1637 */ 1638 static void vga_draw_graphic(VGACommonState *s, int full_update) 1639 { 1640 DisplaySurface *surface = qemu_console_surface(s->con); 1641 int y1, y, update, linesize, y_start, double_scan, mask, depth; 1642 int width, height, shift_control, line_offset, bwidth, bits; 1643 ram_addr_t page0, page1, page_min, page_max; 1644 int disp_width, multi_scan, multi_run; 1645 uint8_t *d; 1646 uint32_t v, addr1, addr; 1647 vga_draw_line_func *vga_draw_line; 1648 #if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) 1649 static const bool byteswap = false; 1650 #else 1651 static const bool byteswap = true; 1652 #endif 1653 1654 full_update |= update_basic_params(s); 1655 1656 if (!full_update) 1657 vga_sync_dirty_bitmap(s); 1658 1659 s->get_resolution(s, &width, &height); 1660 disp_width = width; 1661 1662 shift_control = (s->gr[VGA_GFX_MODE] >> 5) & 3; 1663 double_scan = (s->cr[VGA_CRTC_MAX_SCAN] >> 7); 1664 if (shift_control != 1) { 1665 multi_scan = (((s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1) << double_scan) 1666 - 1; 1667 } else { 1668 /* in CGA modes, multi_scan is ignored */ 1669 /* XXX: is it correct ? */ 1670 multi_scan = double_scan; 1671 } 1672 multi_run = multi_scan; 1673 if (shift_control != s->shift_control || 1674 double_scan != s->double_scan) { 1675 full_update = 1; 1676 s->shift_control = shift_control; 1677 s->double_scan = double_scan; 1678 } 1679 1680 if (shift_control == 0) { 1681 if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { 1682 disp_width <<= 1; 1683 } 1684 } else if (shift_control == 1) { 1685 if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { 1686 disp_width <<= 1; 1687 } 1688 } 1689 1690 depth = s->get_bpp(s); 1691 if (s->line_offset != s->last_line_offset || 1692 disp_width != s->last_width || 1693 height != s->last_height || 1694 s->last_depth != depth) { 1695 if (depth == 32 || (depth == 16 && !byteswap)) { 1696 surface = qemu_create_displaysurface_from(disp_width, 1697 height, depth, s->line_offset, 1698 s->vram_ptr + (s->start_addr * 4), byteswap); 1699 dpy_gfx_replace_surface(s->con, surface); 1700 } else { 1701 qemu_console_resize(s->con, disp_width, height); 1702 surface = qemu_console_surface(s->con); 1703 } 1704 s->last_scr_width = disp_width; 1705 s->last_scr_height = height; 1706 s->last_width = disp_width; 1707 s->last_height = height; 1708 s->last_line_offset = s->line_offset; 1709 s->last_depth = depth; 1710 full_update = 1; 1711 } else if (is_buffer_shared(surface) && 1712 (full_update || surface_data(surface) != s->vram_ptr 1713 + (s->start_addr * 4))) { 1714 surface = qemu_create_displaysurface_from(disp_width, 1715 height, depth, s->line_offset, 1716 s->vram_ptr + (s->start_addr * 4), byteswap); 1717 dpy_gfx_replace_surface(s->con, surface); 1718 } 1719 1720 s->rgb_to_pixel = 1721 rgb_to_pixel_dup_table[get_depth_index(surface)]; 1722 1723 if (shift_control == 0) { 1724 full_update |= update_palette16(s); 1725 if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { 1726 v = VGA_DRAW_LINE4D2; 1727 } else { 1728 v = VGA_DRAW_LINE4; 1729 } 1730 bits = 4; 1731 } else if (shift_control == 1) { 1732 full_update |= update_palette16(s); 1733 if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { 1734 v = VGA_DRAW_LINE2D2; 1735 } else { 1736 v = VGA_DRAW_LINE2; 1737 } 1738 bits = 4; 1739 } else { 1740 switch(s->get_bpp(s)) { 1741 default: 1742 case 0: 1743 full_update |= update_palette256(s); 1744 v = VGA_DRAW_LINE8D2; 1745 bits = 4; 1746 break; 1747 case 8: 1748 full_update |= update_palette256(s); 1749 v = VGA_DRAW_LINE8; 1750 bits = 8; 1751 break; 1752 case 15: 1753 v = VGA_DRAW_LINE15; 1754 bits = 16; 1755 break; 1756 case 16: 1757 v = VGA_DRAW_LINE16; 1758 bits = 16; 1759 break; 1760 case 24: 1761 v = VGA_DRAW_LINE24; 1762 bits = 24; 1763 break; 1764 case 32: 1765 v = VGA_DRAW_LINE32; 1766 bits = 32; 1767 break; 1768 } 1769 } 1770 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + 1771 get_depth_index(surface)]; 1772 1773 if (!is_buffer_shared(surface) && s->cursor_invalidate) { 1774 s->cursor_invalidate(s); 1775 } 1776 1777 line_offset = s->line_offset; 1778 #if 0 1779 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", 1780 width, height, v, line_offset, s->cr[9], s->cr[VGA_CRTC_MODE], 1781 s->line_compare, s->sr[VGA_SEQ_CLOCK_MODE]); 1782 #endif 1783 addr1 = (s->start_addr * 4); 1784 bwidth = (width * bits + 7) / 8; 1785 y_start = -1; 1786 page_min = -1; 1787 page_max = 0; 1788 d = surface_data(surface); 1789 linesize = surface_stride(surface); 1790 y1 = 0; 1791 for(y = 0; y < height; y++) { 1792 addr = addr1; 1793 if (!(s->cr[VGA_CRTC_MODE] & 1)) { 1794 int shift; 1795 /* CGA compatibility handling */ 1796 shift = 14 + ((s->cr[VGA_CRTC_MODE] >> 6) & 1); 1797 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); 1798 } 1799 if (!(s->cr[VGA_CRTC_MODE] & 2)) { 1800 addr = (addr & ~0x8000) | ((y1 & 2) << 14); 1801 } 1802 update = full_update; 1803 page0 = addr; 1804 page1 = addr + bwidth - 1; 1805 update |= memory_region_get_dirty(&s->vram, page0, page1 - page0, 1806 DIRTY_MEMORY_VGA); 1807 /* explicit invalidation for the hardware cursor */ 1808 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; 1809 if (update) { 1810 if (y_start < 0) 1811 y_start = y; 1812 if (page0 < page_min) 1813 page_min = page0; 1814 if (page1 > page_max) 1815 page_max = page1; 1816 if (!(is_buffer_shared(surface))) { 1817 vga_draw_line(s, d, s->vram_ptr + addr, width); 1818 if (s->cursor_draw_line) 1819 s->cursor_draw_line(s, d, y); 1820 } 1821 } else { 1822 if (y_start >= 0) { 1823 /* flush to display */ 1824 dpy_gfx_update(s->con, 0, y_start, 1825 disp_width, y - y_start); 1826 y_start = -1; 1827 } 1828 } 1829 if (!multi_run) { 1830 mask = (s->cr[VGA_CRTC_MODE] & 3) ^ 3; 1831 if ((y1 & mask) == mask) 1832 addr1 += line_offset; 1833 y1++; 1834 multi_run = multi_scan; 1835 } else { 1836 multi_run--; 1837 } 1838 /* line compare acts on the displayed lines */ 1839 if (y == s->line_compare) 1840 addr1 = 0; 1841 d += linesize; 1842 } 1843 if (y_start >= 0) { 1844 /* flush to display */ 1845 dpy_gfx_update(s->con, 0, y_start, 1846 disp_width, y - y_start); 1847 } 1848 /* reset modified pages */ 1849 if (page_max >= page_min) { 1850 memory_region_reset_dirty(&s->vram, 1851 page_min, 1852 page_max - page_min, 1853 DIRTY_MEMORY_VGA); 1854 } 1855 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); 1856 } 1857 1858 static void vga_draw_blank(VGACommonState *s, int full_update) 1859 { 1860 DisplaySurface *surface = qemu_console_surface(s->con); 1861 int i, w, val; 1862 uint8_t *d; 1863 1864 if (!full_update) 1865 return; 1866 if (s->last_scr_width <= 0 || s->last_scr_height <= 0) 1867 return; 1868 1869 s->rgb_to_pixel = 1870 rgb_to_pixel_dup_table[get_depth_index(surface)]; 1871 if (surface_bits_per_pixel(surface) == 8) { 1872 val = s->rgb_to_pixel(0, 0, 0); 1873 } else { 1874 val = 0; 1875 } 1876 w = s->last_scr_width * surface_bytes_per_pixel(surface); 1877 d = surface_data(surface); 1878 for(i = 0; i < s->last_scr_height; i++) { 1879 memset(d, val, w); 1880 d += surface_stride(surface); 1881 } 1882 dpy_gfx_update(s->con, 0, 0, 1883 s->last_scr_width, s->last_scr_height); 1884 } 1885 1886 #define GMODE_TEXT 0 1887 #define GMODE_GRAPH 1 1888 #define GMODE_BLANK 2 1889 1890 static void vga_update_display(void *opaque) 1891 { 1892 VGACommonState *s = opaque; 1893 DisplaySurface *surface = qemu_console_surface(s->con); 1894 int full_update, graphic_mode; 1895 1896 qemu_flush_coalesced_mmio_buffer(); 1897 1898 if (surface_bits_per_pixel(surface) == 0) { 1899 /* nothing to do */ 1900 } else { 1901 full_update = 0; 1902 if (!(s->ar_index & 0x20)) { 1903 graphic_mode = GMODE_BLANK; 1904 } else { 1905 graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE; 1906 } 1907 if (graphic_mode != s->graphic_mode) { 1908 s->graphic_mode = graphic_mode; 1909 s->cursor_blink_time = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 1910 full_update = 1; 1911 } 1912 switch(graphic_mode) { 1913 case GMODE_TEXT: 1914 vga_draw_text(s, full_update); 1915 break; 1916 case GMODE_GRAPH: 1917 vga_draw_graphic(s, full_update); 1918 break; 1919 case GMODE_BLANK: 1920 default: 1921 vga_draw_blank(s, full_update); 1922 break; 1923 } 1924 } 1925 } 1926 1927 /* force a full display refresh */ 1928 static void vga_invalidate_display(void *opaque) 1929 { 1930 VGACommonState *s = opaque; 1931 1932 s->last_width = -1; 1933 s->last_height = -1; 1934 } 1935 1936 void vga_common_reset(VGACommonState *s) 1937 { 1938 s->sr_index = 0; 1939 memset(s->sr, '\0', sizeof(s->sr)); 1940 s->gr_index = 0; 1941 memset(s->gr, '\0', sizeof(s->gr)); 1942 s->ar_index = 0; 1943 memset(s->ar, '\0', sizeof(s->ar)); 1944 s->ar_flip_flop = 0; 1945 s->cr_index = 0; 1946 memset(s->cr, '\0', sizeof(s->cr)); 1947 s->msr = 0; 1948 s->fcr = 0; 1949 s->st00 = 0; 1950 s->st01 = 0; 1951 s->dac_state = 0; 1952 s->dac_sub_index = 0; 1953 s->dac_read_index = 0; 1954 s->dac_write_index = 0; 1955 memset(s->dac_cache, '\0', sizeof(s->dac_cache)); 1956 s->dac_8bit = 0; 1957 memset(s->palette, '\0', sizeof(s->palette)); 1958 s->bank_offset = 0; 1959 s->vbe_index = 0; 1960 memset(s->vbe_regs, '\0', sizeof(s->vbe_regs)); 1961 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID5; 1962 s->vbe_start_addr = 0; 1963 s->vbe_line_offset = 0; 1964 s->vbe_bank_mask = (s->vram_size >> 16) - 1; 1965 memset(s->font_offsets, '\0', sizeof(s->font_offsets)); 1966 s->graphic_mode = -1; /* force full update */ 1967 s->shift_control = 0; 1968 s->double_scan = 0; 1969 s->line_offset = 0; 1970 s->line_compare = 0; 1971 s->start_addr = 0; 1972 s->plane_updated = 0; 1973 s->last_cw = 0; 1974 s->last_ch = 0; 1975 s->last_width = 0; 1976 s->last_height = 0; 1977 s->last_scr_width = 0; 1978 s->last_scr_height = 0; 1979 s->cursor_start = 0; 1980 s->cursor_end = 0; 1981 s->cursor_offset = 0; 1982 memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table)); 1983 memset(s->last_palette, '\0', sizeof(s->last_palette)); 1984 memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr)); 1985 switch (vga_retrace_method) { 1986 case VGA_RETRACE_DUMB: 1987 break; 1988 case VGA_RETRACE_PRECISE: 1989 memset(&s->retrace_info, 0, sizeof (s->retrace_info)); 1990 break; 1991 } 1992 vga_update_memory_access(s); 1993 } 1994 1995 static void vga_reset(void *opaque) 1996 { 1997 VGACommonState *s = opaque; 1998 vga_common_reset(s); 1999 } 2000 2001 #define TEXTMODE_X(x) ((x) % width) 2002 #define TEXTMODE_Y(x) ((x) / width) 2003 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \ 2004 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1)) 2005 /* relay text rendering to the display driver 2006 * instead of doing a full vga_update_display() */ 2007 static void vga_update_text(void *opaque, console_ch_t *chardata) 2008 { 2009 VGACommonState *s = opaque; 2010 int graphic_mode, i, cursor_offset, cursor_visible; 2011 int cw, cheight, width, height, size, c_min, c_max; 2012 uint32_t *src; 2013 console_ch_t *dst, val; 2014 char msg_buffer[80]; 2015 int full_update = 0; 2016 2017 qemu_flush_coalesced_mmio_buffer(); 2018 2019 if (!(s->ar_index & 0x20)) { 2020 graphic_mode = GMODE_BLANK; 2021 } else { 2022 graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE; 2023 } 2024 if (graphic_mode != s->graphic_mode) { 2025 s->graphic_mode = graphic_mode; 2026 full_update = 1; 2027 } 2028 if (s->last_width == -1) { 2029 s->last_width = 0; 2030 full_update = 1; 2031 } 2032 2033 switch (graphic_mode) { 2034 case GMODE_TEXT: 2035 /* TODO: update palette */ 2036 full_update |= update_basic_params(s); 2037 2038 /* total width & height */ 2039 cheight = (s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1; 2040 cw = 8; 2041 if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) { 2042 cw = 9; 2043 } 2044 if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) { 2045 cw = 16; /* NOTE: no 18 pixel wide */ 2046 } 2047 width = (s->cr[VGA_CRTC_H_DISP] + 1); 2048 if (s->cr[VGA_CRTC_V_TOTAL] == 100) { 2049 /* ugly hack for CGA 160x100x16 - explain me the logic */ 2050 height = 100; 2051 } else { 2052 height = s->cr[VGA_CRTC_V_DISP_END] | 2053 ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | 2054 ((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); 2055 height = (height + 1) / cheight; 2056 } 2057 2058 size = (height * width); 2059 if (size > CH_ATTR_SIZE) { 2060 if (!full_update) 2061 return; 2062 2063 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode", 2064 width, height); 2065 break; 2066 } 2067 2068 if (width != s->last_width || height != s->last_height || 2069 cw != s->last_cw || cheight != s->last_ch) { 2070 s->last_scr_width = width * cw; 2071 s->last_scr_height = height * cheight; 2072 qemu_console_resize(s->con, s->last_scr_width, s->last_scr_height); 2073 dpy_text_resize(s->con, width, height); 2074 s->last_depth = 0; 2075 s->last_width = width; 2076 s->last_height = height; 2077 s->last_ch = cheight; 2078 s->last_cw = cw; 2079 full_update = 1; 2080 } 2081 2082 if (full_update) { 2083 s->full_update_gfx = 1; 2084 } 2085 if (s->full_update_text) { 2086 s->full_update_text = 0; 2087 full_update |= 1; 2088 } 2089 2090 /* Update "hardware" cursor */ 2091 cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) | 2092 s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr; 2093 if (cursor_offset != s->cursor_offset || 2094 s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start || 2095 s->cr[VGA_CRTC_CURSOR_END] != s->cursor_end || full_update) { 2096 cursor_visible = !(s->cr[VGA_CRTC_CURSOR_START] & 0x20); 2097 if (cursor_visible && cursor_offset < size && cursor_offset >= 0) 2098 dpy_text_cursor(s->con, 2099 TEXTMODE_X(cursor_offset), 2100 TEXTMODE_Y(cursor_offset)); 2101 else 2102 dpy_text_cursor(s->con, -1, -1); 2103 s->cursor_offset = cursor_offset; 2104 s->cursor_start = s->cr[VGA_CRTC_CURSOR_START]; 2105 s->cursor_end = s->cr[VGA_CRTC_CURSOR_END]; 2106 } 2107 2108 src = (uint32_t *) s->vram_ptr + s->start_addr; 2109 dst = chardata; 2110 2111 if (full_update) { 2112 for (i = 0; i < size; src ++, dst ++, i ++) 2113 console_write_ch(dst, VMEM2CHTYPE(le32_to_cpu(*src))); 2114 2115 dpy_text_update(s->con, 0, 0, width, height); 2116 } else { 2117 c_max = 0; 2118 2119 for (i = 0; i < size; src ++, dst ++, i ++) { 2120 console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src))); 2121 if (*dst != val) { 2122 *dst = val; 2123 c_max = i; 2124 break; 2125 } 2126 } 2127 c_min = i; 2128 for (; i < size; src ++, dst ++, i ++) { 2129 console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src))); 2130 if (*dst != val) { 2131 *dst = val; 2132 c_max = i; 2133 } 2134 } 2135 2136 if (c_min <= c_max) { 2137 i = TEXTMODE_Y(c_min); 2138 dpy_text_update(s->con, 0, i, width, TEXTMODE_Y(c_max) - i + 1); 2139 } 2140 } 2141 2142 return; 2143 case GMODE_GRAPH: 2144 if (!full_update) 2145 return; 2146 2147 s->get_resolution(s, &width, &height); 2148 snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode", 2149 width, height); 2150 break; 2151 case GMODE_BLANK: 2152 default: 2153 if (!full_update) 2154 return; 2155 2156 snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode"); 2157 break; 2158 } 2159 2160 /* Display a message */ 2161 s->last_width = 60; 2162 s->last_height = height = 3; 2163 dpy_text_cursor(s->con, -1, -1); 2164 dpy_text_resize(s->con, s->last_width, height); 2165 2166 for (dst = chardata, i = 0; i < s->last_width * height; i ++) 2167 console_write_ch(dst ++, ' '); 2168 2169 size = strlen(msg_buffer); 2170 width = (s->last_width - size) / 2; 2171 dst = chardata + s->last_width + width; 2172 for (i = 0; i < size; i ++) 2173 console_write_ch(dst ++, 0x00200100 | msg_buffer[i]); 2174 2175 dpy_text_update(s->con, 0, 0, s->last_width, height); 2176 } 2177 2178 static uint64_t vga_mem_read(void *opaque, hwaddr addr, 2179 unsigned size) 2180 { 2181 VGACommonState *s = opaque; 2182 2183 return vga_mem_readb(s, addr); 2184 } 2185 2186 static void vga_mem_write(void *opaque, hwaddr addr, 2187 uint64_t data, unsigned size) 2188 { 2189 VGACommonState *s = opaque; 2190 2191 return vga_mem_writeb(s, addr, data); 2192 } 2193 2194 const MemoryRegionOps vga_mem_ops = { 2195 .read = vga_mem_read, 2196 .write = vga_mem_write, 2197 .endianness = DEVICE_LITTLE_ENDIAN, 2198 .impl = { 2199 .min_access_size = 1, 2200 .max_access_size = 1, 2201 }, 2202 }; 2203 2204 static int vga_common_post_load(void *opaque, int version_id) 2205 { 2206 VGACommonState *s = opaque; 2207 2208 /* force refresh */ 2209 s->graphic_mode = -1; 2210 return 0; 2211 } 2212 2213 const VMStateDescription vmstate_vga_common = { 2214 .name = "vga", 2215 .version_id = 2, 2216 .minimum_version_id = 2, 2217 .post_load = vga_common_post_load, 2218 .fields = (VMStateField[]) { 2219 VMSTATE_UINT32(latch, VGACommonState), 2220 VMSTATE_UINT8(sr_index, VGACommonState), 2221 VMSTATE_PARTIAL_BUFFER(sr, VGACommonState, 8), 2222 VMSTATE_UINT8(gr_index, VGACommonState), 2223 VMSTATE_PARTIAL_BUFFER(gr, VGACommonState, 16), 2224 VMSTATE_UINT8(ar_index, VGACommonState), 2225 VMSTATE_BUFFER(ar, VGACommonState), 2226 VMSTATE_INT32(ar_flip_flop, VGACommonState), 2227 VMSTATE_UINT8(cr_index, VGACommonState), 2228 VMSTATE_BUFFER(cr, VGACommonState), 2229 VMSTATE_UINT8(msr, VGACommonState), 2230 VMSTATE_UINT8(fcr, VGACommonState), 2231 VMSTATE_UINT8(st00, VGACommonState), 2232 VMSTATE_UINT8(st01, VGACommonState), 2233 2234 VMSTATE_UINT8(dac_state, VGACommonState), 2235 VMSTATE_UINT8(dac_sub_index, VGACommonState), 2236 VMSTATE_UINT8(dac_read_index, VGACommonState), 2237 VMSTATE_UINT8(dac_write_index, VGACommonState), 2238 VMSTATE_BUFFER(dac_cache, VGACommonState), 2239 VMSTATE_BUFFER(palette, VGACommonState), 2240 2241 VMSTATE_INT32(bank_offset, VGACommonState), 2242 VMSTATE_UINT8_EQUAL(is_vbe_vmstate, VGACommonState), 2243 VMSTATE_UINT16(vbe_index, VGACommonState), 2244 VMSTATE_UINT16_ARRAY(vbe_regs, VGACommonState, VBE_DISPI_INDEX_NB), 2245 VMSTATE_UINT32(vbe_start_addr, VGACommonState), 2246 VMSTATE_UINT32(vbe_line_offset, VGACommonState), 2247 VMSTATE_UINT32(vbe_bank_mask, VGACommonState), 2248 VMSTATE_END_OF_LIST() 2249 } 2250 }; 2251 2252 static const GraphicHwOps vga_ops = { 2253 .invalidate = vga_invalidate_display, 2254 .gfx_update = vga_update_display, 2255 .text_update = vga_update_text, 2256 }; 2257 2258 void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate) 2259 { 2260 int i, j, v, b; 2261 2262 for(i = 0;i < 256; i++) { 2263 v = 0; 2264 for(j = 0; j < 8; j++) { 2265 v |= ((i >> j) & 1) << (j * 4); 2266 } 2267 expand4[i] = v; 2268 2269 v = 0; 2270 for(j = 0; j < 4; j++) { 2271 v |= ((i >> (2 * j)) & 3) << (j * 4); 2272 } 2273 expand2[i] = v; 2274 } 2275 for(i = 0; i < 16; i++) { 2276 v = 0; 2277 for(j = 0; j < 4; j++) { 2278 b = ((i >> j) & 1); 2279 v |= b << (2 * j); 2280 v |= b << (2 * j + 1); 2281 } 2282 expand4to8[i] = v; 2283 } 2284 2285 /* valid range: 1 MB -> 256 MB */ 2286 s->vram_size = 1024 * 1024; 2287 while (s->vram_size < (s->vram_size_mb << 20) && 2288 s->vram_size < (256 << 20)) { 2289 s->vram_size <<= 1; 2290 } 2291 s->vram_size_mb = s->vram_size >> 20; 2292 2293 s->is_vbe_vmstate = 1; 2294 memory_region_init_ram(&s->vram, obj, "vga.vram", s->vram_size); 2295 vmstate_register_ram(&s->vram, global_vmstate ? NULL : DEVICE(obj)); 2296 xen_register_framebuffer(&s->vram); 2297 s->vram_ptr = memory_region_get_ram_ptr(&s->vram); 2298 s->get_bpp = vga_get_bpp; 2299 s->get_offsets = vga_get_offsets; 2300 s->get_resolution = vga_get_resolution; 2301 s->hw_ops = &vga_ops; 2302 switch (vga_retrace_method) { 2303 case VGA_RETRACE_DUMB: 2304 s->retrace = vga_dumb_retrace; 2305 s->update_retrace_info = vga_dumb_update_retrace_info; 2306 break; 2307 2308 case VGA_RETRACE_PRECISE: 2309 s->retrace = vga_precise_retrace; 2310 s->update_retrace_info = vga_precise_update_retrace_info; 2311 break; 2312 } 2313 vga_dirty_log_start(s); 2314 } 2315 2316 static const MemoryRegionPortio vga_portio_list[] = { 2317 { 0x04, 2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3b4 */ 2318 { 0x0a, 1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3ba */ 2319 { 0x10, 16, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3c0 */ 2320 { 0x24, 2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3d4 */ 2321 { 0x2a, 1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3da */ 2322 PORTIO_END_OF_LIST(), 2323 }; 2324 2325 static const MemoryRegionPortio vbe_portio_list[] = { 2326 { 0, 1, 2, .read = vbe_ioport_read_index, .write = vbe_ioport_write_index }, 2327 # ifdef TARGET_I386 2328 { 1, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data }, 2329 # endif 2330 { 2, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data }, 2331 PORTIO_END_OF_LIST(), 2332 }; 2333 2334 /* Used by both ISA and PCI */ 2335 MemoryRegion *vga_init_io(VGACommonState *s, Object *obj, 2336 const MemoryRegionPortio **vga_ports, 2337 const MemoryRegionPortio **vbe_ports) 2338 { 2339 MemoryRegion *vga_mem; 2340 2341 *vga_ports = vga_portio_list; 2342 *vbe_ports = vbe_portio_list; 2343 2344 vga_mem = g_malloc(sizeof(*vga_mem)); 2345 memory_region_init_io(vga_mem, obj, &vga_mem_ops, s, 2346 "vga-lowmem", 0x20000); 2347 memory_region_set_flush_coalesced(vga_mem); 2348 2349 return vga_mem; 2350 } 2351 2352 void vga_init(VGACommonState *s, Object *obj, MemoryRegion *address_space, 2353 MemoryRegion *address_space_io, bool init_vga_ports) 2354 { 2355 MemoryRegion *vga_io_memory; 2356 const MemoryRegionPortio *vga_ports, *vbe_ports; 2357 2358 qemu_register_reset(vga_reset, s); 2359 2360 s->bank_offset = 0; 2361 2362 s->legacy_address_space = address_space; 2363 2364 vga_io_memory = vga_init_io(s, obj, &vga_ports, &vbe_ports); 2365 memory_region_add_subregion_overlap(address_space, 2366 isa_mem_base + 0x000a0000, 2367 vga_io_memory, 2368 1); 2369 memory_region_set_coalescing(vga_io_memory); 2370 if (init_vga_ports) { 2371 portio_list_init(&s->vga_port_list, obj, vga_ports, s, "vga"); 2372 portio_list_set_flush_coalesced(&s->vga_port_list); 2373 portio_list_add(&s->vga_port_list, address_space_io, 0x3b0); 2374 } 2375 if (vbe_ports) { 2376 portio_list_init(&s->vbe_port_list, obj, vbe_ports, s, "vbe"); 2377 portio_list_add(&s->vbe_port_list, address_space_io, 0x1ce); 2378 } 2379 } 2380 2381 void vga_init_vbe(VGACommonState *s, Object *obj, MemoryRegion *system_memory) 2382 { 2383 /* With pc-0.12 and below we map both the PCI BAR and the fixed VBE region, 2384 * so use an alias to avoid double-mapping the same region. 2385 */ 2386 memory_region_init_alias(&s->vram_vbe, obj, "vram.vbe", 2387 &s->vram, 0, memory_region_size(&s->vram)); 2388 /* XXX: use optimized standard vga accesses */ 2389 memory_region_add_subregion(system_memory, 2390 VBE_DISPI_LFB_PHYSICAL_ADDRESS, 2391 &s->vram_vbe); 2392 s->vbe_mapped = 1; 2393 } 2394