4 * Copyright (c) 2003 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
28 //#define DEBUG_VGA_MEM
29 //#define DEBUG_VGA_REG
32 //#define DEBUG_BOCHS_VBE
34 /* S3 VGA is deprecated - another graphic card will be emulated */
35 //#define CONFIG_S3VGA
37 /* force some bits to zero */
38 const uint8_t sr_mask[8] = {
49 const uint8_t gr_mask[16] = {
50 (uint8_t)~0xf0, /* 0x00 */
51 (uint8_t)~0xf0, /* 0x01 */
52 (uint8_t)~0xf0, /* 0x02 */
53 (uint8_t)~0xe0, /* 0x03 */
54 (uint8_t)~0xfc, /* 0x04 */
55 (uint8_t)~0x84, /* 0x05 */
56 (uint8_t)~0xf0, /* 0x06 */
57 (uint8_t)~0xf0, /* 0x07 */
58 (uint8_t)~0x00, /* 0x08 */
59 (uint8_t)~0xff, /* 0x09 */
60 (uint8_t)~0xff, /* 0x0a */
61 (uint8_t)~0xff, /* 0x0b */
62 (uint8_t)~0xff, /* 0x0c */
63 (uint8_t)~0xff, /* 0x0d */
64 (uint8_t)~0xff, /* 0x0e */
65 (uint8_t)~0xff, /* 0x0f */
68 #define cbswap_32(__x) \
70 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
71 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
72 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
73 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
75 #ifdef WORDS_BIGENDIAN
76 #define PAT(x) cbswap_32(x)
81 #ifdef WORDS_BIGENDIAN
87 #ifdef WORDS_BIGENDIAN
88 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
90 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
93 static const uint32_t mask16[16] = {
114 #ifdef WORDS_BIGENDIAN
117 #define PAT(x) cbswap_32(x)
120 static const uint32_t dmask16[16] = {
139 static const uint32_t dmask4[4] = {
146 static uint32_t expand4[256];
147 static uint16_t expand2[256];
148 static uint8_t expand4to8[16];
153 static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
155 VGAState *s = opaque;
158 /* check port range access depending on color/monochrome mode */
159 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
160 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
165 if (s->ar_flip_flop == 0) {
172 index = s->ar_index & 0x1f;
185 val = s->sr[s->sr_index];
187 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
194 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
195 if (++s->dac_sub_index == 3) {
196 s->dac_sub_index = 0;
210 val = s->gr[s->gr_index];
212 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
221 val = s->cr[s->cr_index];
223 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
226 if (s->cr_index >= 0x20)
227 printf("S3: CR read index=0x%x val=0x%x\n",
233 /* just toggle to fool polling */
234 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
243 #if defined(DEBUG_VGA)
244 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
249 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
251 VGAState *s = opaque;
254 /* check port range access depending on color/monochrome mode */
255 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
256 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
260 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
265 if (s->ar_flip_flop == 0) {
269 index = s->ar_index & 0x1f;
272 s->ar[index] = val & 0x3f;
275 s->ar[index] = val & ~0x10;
281 s->ar[index] = val & ~0xc0;
284 s->ar[index] = val & ~0xf0;
287 s->ar[index] = val & ~0xf0;
293 s->ar_flip_flop ^= 1;
296 s->msr = val & ~0x10;
299 s->sr_index = val & 7;
303 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
305 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
308 s->dac_read_index = val;
309 s->dac_sub_index = 0;
313 s->dac_write_index = val;
314 s->dac_sub_index = 0;
318 s->dac_cache[s->dac_sub_index] = val;
319 if (++s->dac_sub_index == 3) {
320 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
321 s->dac_sub_index = 0;
322 s->dac_write_index++;
326 s->gr_index = val & 0x0f;
330 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
332 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
341 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
343 /* handle CR0-7 protection */
344 if ((s->cr[11] & 0x80) && s->cr_index <= 7) {
345 /* can always write bit 4 of CR7 */
346 if (s->cr_index == 7)
347 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
350 switch(s->cr_index) {
351 case 0x01: /* horizontal display end */
356 case 0x12: /* veritcal display end */
357 s->cr[s->cr_index] = val;
366 /* chip ID, cannot write */
369 /* update start address */
372 s->cr[s->cr_index] = val;
374 s->cr[0x69] = (s->cr[69] & ~0x03) | v;
378 /* update start address */
381 s->cr[s->cr_index] = val;
383 s->cr[0x69] = (s->cr[69] & ~0x0c) | (v << 2);
388 s->cr[s->cr_index] = val;
392 if (s->cr_index >= 0x20)
393 printf("S3: CR write index=0x%x val=0x%x\n",
404 #ifdef CONFIG_BOCHS_VBE
405 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
407 VGAState *s = opaque;
413 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
415 VGAState *s = opaque;
418 if (s->vbe_index <= VBE_DISPI_INDEX_NB)
419 val = s->vbe_regs[s->vbe_index];
422 #ifdef DEBUG_BOCHS_VBE
423 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
428 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
430 VGAState *s = opaque;
434 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
436 VGAState *s = opaque;
438 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
439 #ifdef DEBUG_BOCHS_VBE
440 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
442 switch(s->vbe_index) {
443 case VBE_DISPI_INDEX_ID:
444 if (val == VBE_DISPI_ID0 ||
445 val == VBE_DISPI_ID1 ||
446 val == VBE_DISPI_ID2) {
447 s->vbe_regs[s->vbe_index] = val;
450 case VBE_DISPI_INDEX_XRES:
451 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
452 s->vbe_regs[s->vbe_index] = val;
455 case VBE_DISPI_INDEX_YRES:
456 if (val <= VBE_DISPI_MAX_YRES) {
457 s->vbe_regs[s->vbe_index] = val;
460 case VBE_DISPI_INDEX_BPP:
463 if (val == 4 || val == 8 || val == 15 ||
464 val == 16 || val == 24 || val == 32) {
465 s->vbe_regs[s->vbe_index] = val;
468 case VBE_DISPI_INDEX_BANK:
469 val &= s->vbe_bank_mask;
470 s->vbe_regs[s->vbe_index] = val;
471 s->bank_offset = (val << 16);
473 case VBE_DISPI_INDEX_ENABLE:
474 if (val & VBE_DISPI_ENABLED) {
475 int h, shift_control;
477 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
478 s->vbe_regs[VBE_DISPI_INDEX_XRES];
479 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
480 s->vbe_regs[VBE_DISPI_INDEX_YRES];
481 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
482 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
484 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
485 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
487 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
488 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
489 s->vbe_start_addr = 0;
491 /* clear the screen (should be done in BIOS) */
492 if (!(val & VBE_DISPI_NOCLEARMEM)) {
493 memset(s->vram_ptr, 0,
494 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
497 /* we initialize the VGA graphic mode (should be done
499 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
500 s->cr[0x17] |= 3; /* no CGA modes */
501 s->cr[0x13] = s->vbe_line_offset >> 3;
503 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
505 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
507 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
508 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
509 /* line compare to 1023 */
514 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
516 s->sr[0x01] &= ~8; /* no double line */
519 s->sr[4] |= 0x08; /* set chain 4 mode */
520 s->sr[2] |= 0x0f; /* activate all planes */
522 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
523 s->cr[0x09] &= ~0x9f; /* no double scan */
525 /* XXX: the bios should do that */
528 s->vbe_regs[s->vbe_index] = val;
530 case VBE_DISPI_INDEX_VIRT_WIDTH:
532 int w, h, line_offset;
534 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
537 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
538 line_offset = w >> 1;
540 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
541 h = s->vram_size / line_offset;
542 /* XXX: support weird bochs semantics ? */
543 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
545 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
546 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
547 s->vbe_line_offset = line_offset;
550 case VBE_DISPI_INDEX_X_OFFSET:
551 case VBE_DISPI_INDEX_Y_OFFSET:
554 s->vbe_regs[s->vbe_index] = val;
555 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
556 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
557 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
558 s->vbe_start_addr += x >> 1;
560 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
561 s->vbe_start_addr >>= 2;
571 /* called for accesses between 0xa0000 and 0xc0000 */
572 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
574 VGAState *s = opaque;
575 int memory_map_mode, plane;
578 /* convert to VGA memory offset */
579 memory_map_mode = (s->gr[6] >> 2) & 3;
581 switch(memory_map_mode) {
587 addr += s->bank_offset;
602 if (s->sr[4] & 0x08) {
603 /* chain 4 mode : simplest access */
604 ret = s->vram_ptr[addr];
605 } else if (s->gr[5] & 0x10) {
606 /* odd/even mode (aka text mode mapping) */
607 plane = (s->gr[4] & 2) | (addr & 1);
608 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
610 /* standard VGA latched access */
611 s->latch = ((uint32_t *)s->vram_ptr)[addr];
613 if (!(s->gr[5] & 0x08)) {
616 ret = GET_PLANE(s->latch, plane);
619 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
628 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
631 #ifdef TARGET_WORDS_BIGENDIAN
632 v = vga_mem_readb(opaque, addr) << 8;
633 v |= vga_mem_readb(opaque, addr + 1);
635 v = vga_mem_readb(opaque, addr);
636 v |= vga_mem_readb(opaque, addr + 1) << 8;
641 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
644 #ifdef TARGET_WORDS_BIGENDIAN
645 v = vga_mem_readb(opaque, addr) << 24;
646 v |= vga_mem_readb(opaque, addr + 1) << 16;
647 v |= vga_mem_readb(opaque, addr + 2) << 8;
648 v |= vga_mem_readb(opaque, addr + 3);
650 v = vga_mem_readb(opaque, addr);
651 v |= vga_mem_readb(opaque, addr + 1) << 8;
652 v |= vga_mem_readb(opaque, addr + 2) << 16;
653 v |= vga_mem_readb(opaque, addr + 3) << 24;
658 /* called for accesses between 0xa0000 and 0xc0000 */
659 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
661 VGAState *s = opaque;
662 int memory_map_mode, plane, write_mode, b, func_select;
663 uint32_t write_mask, bit_mask, set_mask;
666 printf("vga: [0x%x] = 0x%02x\n", addr, val);
668 /* convert to VGA memory offset */
669 memory_map_mode = (s->gr[6] >> 2) & 3;
671 switch(memory_map_mode) {
677 addr += s->bank_offset;
692 if (s->sr[4] & 0x08) {
693 /* chain 4 mode : simplest access */
695 if (s->sr[2] & (1 << plane)) {
696 s->vram_ptr[addr] = val;
698 printf("vga: chain4: [0x%x]\n", addr);
700 cpu_physical_memory_set_dirty(s->vram_offset + addr);
702 } else if (s->gr[5] & 0x10) {
703 /* odd/even mode (aka text mode mapping) */
704 plane = (s->gr[4] & 2) | (addr & 1);
705 if (s->sr[2] & (1 << plane)) {
706 addr = ((addr & ~1) << 1) | plane;
707 s->vram_ptr[addr] = val;
709 printf("vga: odd/even: [0x%x]\n", addr);
711 cpu_physical_memory_set_dirty(s->vram_offset + addr);
714 /* standard VGA latched access */
715 write_mode = s->gr[5] & 3;
721 val = ((val >> b) | (val << (8 - b))) & 0xff;
725 /* apply set/reset mask */
726 set_mask = mask16[s->gr[1]];
727 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
734 val = mask16[val & 0x0f];
740 val = (val >> b) | (val << (8 - b));
742 bit_mask = s->gr[8] & val;
743 val = mask16[s->gr[0]];
747 /* apply logical operation */
748 func_select = s->gr[3] >> 3;
749 switch(func_select) {
769 bit_mask |= bit_mask << 8;
770 bit_mask |= bit_mask << 16;
771 val = (val & bit_mask) | (s->latch & ~bit_mask);
774 /* mask data according to sr[2] */
775 write_mask = mask16[s->sr[2]];
776 ((uint32_t *)s->vram_ptr)[addr] =
777 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
780 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
781 addr * 4, write_mask, val);
783 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
787 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
789 #ifdef TARGET_WORDS_BIGENDIAN
790 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
791 vga_mem_writeb(opaque, addr + 1, val & 0xff);
793 vga_mem_writeb(opaque, addr, val & 0xff);
794 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
798 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
800 #ifdef TARGET_WORDS_BIGENDIAN
801 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
802 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
803 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
804 vga_mem_writeb(opaque, addr + 3, val & 0xff);
806 vga_mem_writeb(opaque, addr, val & 0xff);
807 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
808 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
809 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
813 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
814 const uint8_t *font_ptr, int h,
815 uint32_t fgcol, uint32_t bgcol);
816 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
817 const uint8_t *font_ptr, int h,
818 uint32_t fgcol, uint32_t bgcol, int dup9);
819 typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
820 const uint8_t *s, int width);
822 static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
828 static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
830 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
833 static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
835 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
838 static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
840 return (r << 16) | (g << 8) | b;
844 #include "vga_template.h"
847 #include "vga_template.h"
850 #include "vga_template.h"
853 #include "vga_template.h"
855 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
858 col = rgb_to_pixel8(r, g, b);
864 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
867 col = rgb_to_pixel15(r, g, b);
872 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
875 col = rgb_to_pixel16(r, g, b);
880 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
883 col = rgb_to_pixel32(r, g, b);
887 /* return true if the palette was modified */
888 static int update_palette16(VGAState *s)
891 uint32_t v, col, *palette;
894 palette = s->last_palette;
895 for(i = 0; i < 16; i++) {
897 if (s->ar[0x10] & 0x80)
898 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
900 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
902 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
903 c6_to_8(s->palette[v + 1]),
904 c6_to_8(s->palette[v + 2]));
905 if (col != palette[i]) {
913 /* return true if the palette was modified */
914 static int update_palette256(VGAState *s)
917 uint32_t v, col, *palette;
920 palette = s->last_palette;
922 for(i = 0; i < 256; i++) {
923 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
924 c6_to_8(s->palette[v + 1]),
925 c6_to_8(s->palette[v + 2]));
926 if (col != palette[i]) {
935 static void vga_get_offsets(VGAState *s,
936 uint32_t *pline_offset,
937 uint32_t *pstart_addr)
939 uint32_t start_addr, line_offset;
940 #ifdef CONFIG_BOCHS_VBE
941 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
942 line_offset = s->vbe_line_offset;
943 start_addr = s->vbe_start_addr;
947 /* compute line_offset in bytes */
948 line_offset = s->cr[0x13];
952 v = (s->cr[0x51] >> 4) & 3; /* S3 extension */
954 v = (s->cr[0x43] >> 2) & 1; /* S3 extension */
955 line_offset |= (v << 8);
960 /* starting address */
961 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
963 start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */
966 *pline_offset = line_offset;
967 *pstart_addr = start_addr;
970 /* update start_addr and line_offset. Return TRUE if modified */
971 static int update_basic_params(VGAState *s)
974 uint32_t start_addr, line_offset, line_compare;
978 s->get_offsets(s, &line_offset, &start_addr);
980 line_compare = s->cr[0x18] |
981 ((s->cr[0x07] & 0x10) << 4) |
982 ((s->cr[0x09] & 0x40) << 3);
984 if (line_offset != s->line_offset ||
985 start_addr != s->start_addr ||
986 line_compare != s->line_compare) {
987 s->line_offset = line_offset;
988 s->start_addr = start_addr;
989 s->line_compare = line_compare;
995 static inline int get_depth_index(int depth)
1010 static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = {
1017 static vga_draw_glyph8_func *vga_draw_glyph16_table[4] = {
1019 vga_draw_glyph16_16,
1020 vga_draw_glyph16_16,
1021 vga_draw_glyph16_32,
1024 static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = {
1031 static 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,
1058 static void vga_draw_text(VGAState *s, int full_update)
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;
1067 uint32_t *ch_attr_ptr;
1068 vga_draw_glyph8_func *vga_draw_glyph8;
1069 vga_draw_glyph9_func *vga_draw_glyph9;
1071 full_update |= update_palette16(s);
1072 palette = s->last_palette;
1074 /* compute font data address (in plane 2) */
1076 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1077 if (offset != s->font_offsets[0]) {
1078 s->font_offsets[0] = offset;
1081 font_base[0] = s->vram_ptr + offset;
1083 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1084 font_base[1] = s->vram_ptr + offset;
1085 if (offset != s->font_offsets[1]) {
1086 s->font_offsets[1] = offset;
1090 full_update |= update_basic_params(s);
1092 line_offset = s->line_offset;
1093 s1 = s->vram_ptr + (s->start_addr * 4);
1095 /* total width & height */
1096 cheight = (s->cr[9] & 0x1f) + 1;
1098 if (!(s->sr[1] & 0x01))
1100 if (s->sr[1] & 0x08)
1101 cw = 16; /* NOTE: no 18 pixel wide */
1102 x_incr = cw * ((s->ds->depth + 7) >> 3);
1103 width = (s->cr[0x01] + 1);
1104 if (s->cr[0x06] == 100) {
1105 /* ugly hack for CGA 160x100x16 - explain me the logic */
1108 height = s->cr[0x12] |
1109 ((s->cr[0x07] & 0x02) << 7) |
1110 ((s->cr[0x07] & 0x40) << 3);
1111 height = (height + 1) / cheight;
1113 if ((height * width) > CH_ATTR_SIZE) {
1114 /* better than nothing: exit if transient size is too big */
1118 if (width != s->last_width || height != s->last_height ||
1119 cw != s->last_cw || cheight != s->last_ch) {
1120 s->last_scr_width = width * cw;
1121 s->last_scr_height = height * cheight;
1122 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
1123 s->last_width = width;
1124 s->last_height = height;
1125 s->last_ch = cheight;
1129 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1130 if (cursor_offset != s->cursor_offset ||
1131 s->cr[0xa] != s->cursor_start ||
1132 s->cr[0xb] != s->cursor_end) {
1133 /* if the cursor position changed, we update the old and new
1135 if (s->cursor_offset < CH_ATTR_SIZE)
1136 s->last_ch_attr[s->cursor_offset] = -1;
1137 if (cursor_offset < CH_ATTR_SIZE)
1138 s->last_ch_attr[cursor_offset] = -1;
1139 s->cursor_offset = cursor_offset;
1140 s->cursor_start = s->cr[0xa];
1141 s->cursor_end = s->cr[0xb];
1143 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1145 depth_index = get_depth_index(s->ds->depth);
1147 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1149 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1150 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1153 linesize = s->ds->linesize;
1154 ch_attr_ptr = s->last_ch_attr;
1155 for(cy = 0; cy < height; cy++) {
1160 for(cx = 0; cx < width; cx++) {
1161 ch_attr = *(uint16_t *)src;
1162 if (full_update || ch_attr != *ch_attr_ptr) {
1167 *ch_attr_ptr = ch_attr;
1168 #ifdef WORDS_BIGENDIAN
1170 cattr = ch_attr & 0xff;
1172 ch = ch_attr & 0xff;
1173 cattr = ch_attr >> 8;
1175 font_ptr = font_base[(cattr >> 3) & 1];
1176 font_ptr += 32 * 4 * ch;
1177 bgcol = palette[cattr >> 4];
1178 fgcol = palette[cattr & 0x0f];
1180 vga_draw_glyph8(d1, linesize,
1181 font_ptr, cheight, fgcol, bgcol);
1184 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1186 vga_draw_glyph9(d1, linesize,
1187 font_ptr, cheight, fgcol, bgcol, dup9);
1189 if (src == cursor_ptr &&
1190 !(s->cr[0x0a] & 0x20)) {
1191 int line_start, line_last, h;
1192 /* draw the cursor */
1193 line_start = s->cr[0x0a] & 0x1f;
1194 line_last = s->cr[0x0b] & 0x1f;
1195 /* XXX: check that */
1196 if (line_last > cheight - 1)
1197 line_last = cheight - 1;
1198 if (line_last >= line_start && line_start < cheight) {
1199 h = line_last - line_start + 1;
1200 d = d1 + linesize * line_start;
1202 vga_draw_glyph8(d, linesize,
1203 cursor_glyph, h, fgcol, bgcol);
1205 vga_draw_glyph9(d, linesize,
1206 cursor_glyph, h, fgcol, bgcol, 1);
1216 dpy_update(s->ds, cx_min * cw, cy * cheight,
1217 (cx_max - cx_min + 1) * cw, cheight);
1219 dest += linesize * cheight;
1238 static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = {
1245 vga_draw_line2d2_16,
1246 vga_draw_line2d2_16,
1247 vga_draw_line2d2_32,
1255 vga_draw_line4d2_16,
1256 vga_draw_line4d2_16,
1257 vga_draw_line4d2_32,
1260 vga_draw_line8d2_16,
1261 vga_draw_line8d2_16,
1262 vga_draw_line8d2_32,
1290 static int vga_get_bpp(VGAState *s)
1293 #ifdef CONFIG_BOCHS_VBE
1294 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1295 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1304 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1308 width = (s->cr[0x01] + 1) * 8;
1309 height = s->cr[0x12] |
1310 ((s->cr[0x07] & 0x02) << 7) |
1311 ((s->cr[0x07] & 0x40) << 3);
1312 height = (height + 1);
1317 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1320 if (y1 >= VGA_MAX_HEIGHT)
1322 if (y2 >= VGA_MAX_HEIGHT)
1323 y2 = VGA_MAX_HEIGHT;
1324 for(y = y1; y < y2; y++) {
1325 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1332 static void vga_draw_graphic(VGAState *s, int full_update)
1334 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1335 int width, height, shift_control, line_offset, page0, page1, bwidth;
1336 int disp_width, multi_scan, multi_run;
1338 uint32_t v, addr1, addr;
1339 vga_draw_line_func *vga_draw_line;
1341 full_update |= update_basic_params(s);
1343 s->get_resolution(s, &width, &height);
1346 shift_control = (s->gr[0x05] >> 5) & 3;
1347 double_scan = (s->cr[0x09] & 0x80);
1348 if (shift_control > 1) {
1349 multi_scan = (s->cr[0x09] & 0x1f);
1353 multi_run = multi_scan;
1354 if (shift_control != s->shift_control ||
1355 double_scan != s->double_scan) {
1357 s->shift_control = shift_control;
1358 s->double_scan = double_scan;
1361 if (shift_control == 0) {
1362 full_update |= update_palette16(s);
1363 if (s->sr[0x01] & 8) {
1364 v = VGA_DRAW_LINE4D2;
1369 } else if (shift_control == 1) {
1370 full_update |= update_palette16(s);
1371 if (s->sr[0x01] & 8) {
1372 v = VGA_DRAW_LINE2D2;
1378 switch(s->get_bpp(s)) {
1381 full_update |= update_palette256(s);
1382 v = VGA_DRAW_LINE8D2;
1385 full_update |= update_palette256(s);
1389 v = VGA_DRAW_LINE15;
1392 v = VGA_DRAW_LINE16;
1395 v = VGA_DRAW_LINE24;
1398 v = VGA_DRAW_LINE32;
1402 vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)];
1404 if (disp_width != s->last_width ||
1405 height != s->last_height) {
1406 dpy_resize(s->ds, disp_width, height);
1407 s->last_scr_width = disp_width;
1408 s->last_scr_height = height;
1409 s->last_width = disp_width;
1410 s->last_height = height;
1413 if (s->cursor_invalidate)
1414 s->cursor_invalidate(s);
1416 line_offset = s->line_offset;
1418 printf("w=%d h=%d v=%d line_offset=%d double_scan=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=%02x\n",
1419 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1421 addr1 = (s->start_addr * 4);
1424 page_min = 0x7fffffff;
1427 linesize = s->ds->linesize;
1429 for(y = 0; y < height; y++) {
1431 if (!(s->cr[0x17] & 1)) {
1433 /* CGA compatibility handling */
1434 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1435 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1437 if (!(s->cr[0x17] & 2)) {
1438 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1440 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1441 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1442 update = full_update | cpu_physical_memory_is_dirty(page0) |
1443 cpu_physical_memory_is_dirty(page1);
1444 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1445 /* if wide line, can use another page */
1446 update |= cpu_physical_memory_is_dirty(page0 + TARGET_PAGE_SIZE);
1448 /* explicit invalidation for the hardware cursor */
1449 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1453 if (page0 < page_min)
1455 if (page1 > page_max)
1457 vga_draw_line(s, d, s->vram_ptr + addr, width);
1458 if (s->cursor_draw_line)
1459 s->cursor_draw_line(s, d, y);
1462 /* flush to display */
1463 dpy_update(s->ds, 0, y_start,
1464 disp_width, y - y_start);
1469 if (!double_scan || (y & 1) != 0) {
1470 if (y1 == s->line_compare) {
1473 mask = (s->cr[0x17] & 3) ^ 3;
1474 if ((y1 & mask) == mask)
1475 addr1 += line_offset;
1479 multi_run = multi_scan;
1487 /* flush to display */
1488 dpy_update(s->ds, 0, y_start,
1489 disp_width, y - y_start);
1491 /* reset modified pages */
1492 if (page_max != -1) {
1493 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE);
1495 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1498 static void vga_draw_blank(VGAState *s, int full_update)
1505 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1507 if (s->ds->depth == 8)
1508 val = s->rgb_to_pixel(0, 0, 0);
1511 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1513 for(i = 0; i < s->last_scr_height; i++) {
1515 d += s->ds->linesize;
1517 dpy_update(s->ds, 0, 0,
1518 s->last_scr_width, s->last_scr_height);
1521 #define GMODE_TEXT 0
1522 #define GMODE_GRAPH 1
1523 #define GMODE_BLANK 2
1525 void vga_update_display(void)
1527 VGAState *s = vga_state;
1528 int full_update, graphic_mode;
1530 if (s->ds->depth == 0) {
1533 switch(s->ds->depth) {
1535 s->rgb_to_pixel = rgb_to_pixel8_dup;
1538 s->rgb_to_pixel = rgb_to_pixel15_dup;
1542 s->rgb_to_pixel = rgb_to_pixel16_dup;
1545 s->rgb_to_pixel = rgb_to_pixel32_dup;
1550 if (!(s->ar_index & 0x20)) {
1551 graphic_mode = GMODE_BLANK;
1553 graphic_mode = s->gr[6] & 1;
1555 if (graphic_mode != s->graphic_mode) {
1556 s->graphic_mode = graphic_mode;
1559 switch(graphic_mode) {
1561 vga_draw_text(s, full_update);
1564 vga_draw_graphic(s, full_update);
1568 vga_draw_blank(s, full_update);
1574 /* force a full display refresh */
1575 void vga_invalidate_display(void)
1577 VGAState *s = vga_state;
1580 s->last_height = -1;
1583 static void vga_reset(VGAState *s)
1585 memset(s, 0, sizeof(VGAState));
1587 /* chip ID for 8c968 */
1590 s->cr[0x2f] = 0x01; /* XXX: check revision code */
1593 s->graphic_mode = -1; /* force full update */
1596 static CPUReadMemoryFunc *vga_mem_read[3] = {
1602 static CPUWriteMemoryFunc *vga_mem_write[3] = {
1608 static void vga_save(QEMUFile *f, void *opaque)
1610 VGAState *s = opaque;
1613 qemu_put_be32s(f, &s->latch);
1614 qemu_put_8s(f, &s->sr_index);
1615 qemu_put_buffer(f, s->sr, 8);
1616 qemu_put_8s(f, &s->gr_index);
1617 qemu_put_buffer(f, s->gr, 16);
1618 qemu_put_8s(f, &s->ar_index);
1619 qemu_put_buffer(f, s->ar, 21);
1620 qemu_put_be32s(f, &s->ar_flip_flop);
1621 qemu_put_8s(f, &s->cr_index);
1622 qemu_put_buffer(f, s->cr, 256);
1623 qemu_put_8s(f, &s->msr);
1624 qemu_put_8s(f, &s->fcr);
1625 qemu_put_8s(f, &s->st00);
1626 qemu_put_8s(f, &s->st01);
1628 qemu_put_8s(f, &s->dac_state);
1629 qemu_put_8s(f, &s->dac_sub_index);
1630 qemu_put_8s(f, &s->dac_read_index);
1631 qemu_put_8s(f, &s->dac_write_index);
1632 qemu_put_buffer(f, s->dac_cache, 3);
1633 qemu_put_buffer(f, s->palette, 768);
1635 qemu_put_be32s(f, &s->bank_offset);
1636 #ifdef CONFIG_BOCHS_VBE
1637 qemu_put_byte(f, 1);
1638 qemu_put_be16s(f, &s->vbe_index);
1639 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1640 qemu_put_be16s(f, &s->vbe_regs[i]);
1641 qemu_put_be32s(f, &s->vbe_start_addr);
1642 qemu_put_be32s(f, &s->vbe_line_offset);
1643 qemu_put_be32s(f, &s->vbe_bank_mask);
1645 qemu_put_byte(f, 0);
1649 static int vga_load(QEMUFile *f, void *opaque, int version_id)
1651 VGAState *s = opaque;
1654 if (version_id != 1)
1657 qemu_get_be32s(f, &s->latch);
1658 qemu_get_8s(f, &s->sr_index);
1659 qemu_get_buffer(f, s->sr, 8);
1660 qemu_get_8s(f, &s->gr_index);
1661 qemu_get_buffer(f, s->gr, 16);
1662 qemu_get_8s(f, &s->ar_index);
1663 qemu_get_buffer(f, s->ar, 21);
1664 qemu_get_be32s(f, &s->ar_flip_flop);
1665 qemu_get_8s(f, &s->cr_index);
1666 qemu_get_buffer(f, s->cr, 256);
1667 qemu_get_8s(f, &s->msr);
1668 qemu_get_8s(f, &s->fcr);
1669 qemu_get_8s(f, &s->st00);
1670 qemu_get_8s(f, &s->st01);
1672 qemu_get_8s(f, &s->dac_state);
1673 qemu_get_8s(f, &s->dac_sub_index);
1674 qemu_get_8s(f, &s->dac_read_index);
1675 qemu_get_8s(f, &s->dac_write_index);
1676 qemu_get_buffer(f, s->dac_cache, 3);
1677 qemu_get_buffer(f, s->palette, 768);
1679 qemu_get_be32s(f, &s->bank_offset);
1680 is_vbe = qemu_get_byte(f);
1681 #ifdef CONFIG_BOCHS_VBE
1684 qemu_get_be16s(f, &s->vbe_index);
1685 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1686 qemu_get_be16s(f, &s->vbe_regs[i]);
1687 qemu_get_be32s(f, &s->vbe_start_addr);
1688 qemu_get_be32s(f, &s->vbe_line_offset);
1689 qemu_get_be32s(f, &s->vbe_bank_mask);
1696 s->graphic_mode = -1;
1700 static void vga_map(PCIDevice *pci_dev, int region_num,
1701 uint32_t addr, uint32_t size, int type)
1703 VGAState *s = vga_state;
1705 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1708 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1709 unsigned long vga_ram_offset, int vga_ram_size)
1713 for(i = 0;i < 256; i++) {
1715 for(j = 0; j < 8; j++) {
1716 v |= ((i >> j) & 1) << (j * 4);
1721 for(j = 0; j < 4; j++) {
1722 v |= ((i >> (2 * j)) & 3) << (j * 4);
1726 for(i = 0; i < 16; i++) {
1728 for(j = 0; j < 4; j++) {
1731 v |= b << (2 * j + 1);
1738 s->vram_ptr = vga_ram_base;
1739 s->vram_offset = vga_ram_offset;
1740 s->vram_size = vga_ram_size;
1742 s->get_bpp = vga_get_bpp;
1743 s->get_offsets = vga_get_offsets;
1744 s->get_resolution = vga_get_resolution;
1745 /* XXX: currently needed for display */
1750 int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base,
1751 unsigned long vga_ram_offset, int vga_ram_size,
1756 s = qemu_mallocz(sizeof(VGAState));
1760 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1762 register_savevm("vga", 0, 1, vga_save, vga_load, s);
1764 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
1766 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1767 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1768 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1769 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
1771 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
1773 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1774 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1775 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1776 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
1779 #ifdef CONFIG_BOCHS_VBE
1780 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1781 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
1782 #if defined (TARGET_I386)
1783 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1784 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
1786 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1787 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
1789 /* old Bochs IO ports */
1790 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1791 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
1793 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1794 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1796 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1797 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1799 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1800 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
1802 #endif /* CONFIG_BOCHS_VBE */
1804 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
1805 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1812 d = pci_register_device("VGA",
1816 pci_conf = d->config;
1817 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1818 pci_conf[0x01] = 0x12;
1819 pci_conf[0x02] = 0x11;
1820 pci_conf[0x03] = 0x11;
1821 pci_conf[0x0a] = 0x00; // VGA controller
1822 pci_conf[0x0b] = 0x03;
1823 pci_conf[0x0e] = 0x00; // header_type
1825 /* XXX: vga_ram_size must be a power of two */
1826 pci_register_io_region(d, 0, vga_ram_size,
1827 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1829 #ifdef CONFIG_BOCHS_VBE
1830 /* XXX: use optimized standard vga accesses */
1831 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1832 vga_ram_size, vga_ram_offset);
1838 /********************************************************/
1839 /* vga screen dump */
1841 static int vga_save_w, vga_save_h;
1843 static void vga_save_dpy_update(DisplayState *s,
1844 int x, int y, int w, int h)
1848 static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1850 s->linesize = w * 4;
1851 s->data = qemu_malloc(h * s->linesize);
1856 static void vga_save_dpy_refresh(DisplayState *s)
1860 static int ppm_save(const char *filename, uint8_t *data,
1861 int w, int h, int linesize)
1868 f = fopen(filename, "wb");
1871 fprintf(f, "P6\n%d %d\n%d\n",
1874 for(y = 0; y < h; y++) {
1876 for(x = 0; x < w; x++) {
1878 fputc((v >> 16) & 0xff, f);
1879 fputc((v >> 8) & 0xff, f);
1880 fputc((v) & 0xff, f);
1889 /* save the vga display in a PPM image even if no display is
1891 void vga_screen_dump(const char *filename)
1893 VGAState *s = vga_state;
1894 DisplayState *saved_ds, ds1, *ds = &ds1;
1896 /* XXX: this is a little hackish */
1897 vga_invalidate_display();
1900 memset(ds, 0, sizeof(DisplayState));
1901 ds->dpy_update = vga_save_dpy_update;
1902 ds->dpy_resize = vga_save_dpy_resize;
1903 ds->dpy_refresh = vga_save_dpy_refresh;
1907 s->graphic_mode = -1;
1908 vga_update_display();
1911 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1913 qemu_free(ds->data);