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
31 //#define DEBUG_BOCHS_VBE
33 /* force some bits to zero */
34 const uint8_t sr_mask[8] = {
45 const uint8_t gr_mask[16] = {
46 (uint8_t)~0xf0, /* 0x00 */
47 (uint8_t)~0xf0, /* 0x01 */
48 (uint8_t)~0xf0, /* 0x02 */
49 (uint8_t)~0xe0, /* 0x03 */
50 (uint8_t)~0xfc, /* 0x04 */
51 (uint8_t)~0x84, /* 0x05 */
52 (uint8_t)~0xf0, /* 0x06 */
53 (uint8_t)~0xf0, /* 0x07 */
54 (uint8_t)~0x00, /* 0x08 */
55 (uint8_t)~0xff, /* 0x09 */
56 (uint8_t)~0xff, /* 0x0a */
57 (uint8_t)~0xff, /* 0x0b */
58 (uint8_t)~0xff, /* 0x0c */
59 (uint8_t)~0xff, /* 0x0d */
60 (uint8_t)~0xff, /* 0x0e */
61 (uint8_t)~0xff, /* 0x0f */
64 #define cbswap_32(__x) \
66 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
67 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
68 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
69 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
71 #ifdef WORDS_BIGENDIAN
72 #define PAT(x) cbswap_32(x)
77 #ifdef WORDS_BIGENDIAN
83 #ifdef WORDS_BIGENDIAN
84 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
86 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
89 static const uint32_t mask16[16] = {
110 #ifdef WORDS_BIGENDIAN
113 #define PAT(x) cbswap_32(x)
116 static const uint32_t dmask16[16] = {
135 static const uint32_t dmask4[4] = {
142 static uint32_t expand4[256];
143 static uint16_t expand2[256];
144 static uint8_t expand4to8[16];
149 static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
151 VGAState *s = opaque;
154 /* check port range access depending on color/monochrome mode */
155 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
156 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
161 if (s->ar_flip_flop == 0) {
168 index = s->ar_index & 0x1f;
181 val = s->sr[s->sr_index];
183 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
190 val = s->dac_write_index;
193 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
194 if (++s->dac_sub_index == 3) {
195 s->dac_sub_index = 0;
209 val = s->gr[s->gr_index];
211 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
220 val = s->cr[s->cr_index];
222 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
227 /* just toggle to fool polling */
228 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
237 #if defined(DEBUG_VGA)
238 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
243 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
245 VGAState *s = opaque;
248 /* check port range access depending on color/monochrome mode */
249 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
250 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
254 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
259 if (s->ar_flip_flop == 0) {
263 index = s->ar_index & 0x1f;
266 s->ar[index] = val & 0x3f;
269 s->ar[index] = val & ~0x10;
275 s->ar[index] = val & ~0xc0;
278 s->ar[index] = val & ~0xf0;
281 s->ar[index] = val & ~0xf0;
287 s->ar_flip_flop ^= 1;
290 s->msr = val & ~0x10;
293 s->sr_index = val & 7;
297 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
299 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
302 s->dac_read_index = val;
303 s->dac_sub_index = 0;
307 s->dac_write_index = val;
308 s->dac_sub_index = 0;
312 s->dac_cache[s->dac_sub_index] = val;
313 if (++s->dac_sub_index == 3) {
314 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
315 s->dac_sub_index = 0;
316 s->dac_write_index++;
320 s->gr_index = val & 0x0f;
324 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
326 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
335 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
337 /* handle CR0-7 protection */
338 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
339 /* can always write bit 4 of CR7 */
340 if (s->cr_index == 7)
341 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
344 switch(s->cr_index) {
345 case 0x01: /* horizontal display end */
350 case 0x12: /* veritcal display end */
351 s->cr[s->cr_index] = val;
354 s->cr[s->cr_index] = val;
365 #ifdef CONFIG_BOCHS_VBE
366 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
368 VGAState *s = opaque;
374 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
376 VGAState *s = opaque;
379 if (s->vbe_index <= VBE_DISPI_INDEX_NB)
380 val = s->vbe_regs[s->vbe_index];
383 #ifdef DEBUG_BOCHS_VBE
384 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
389 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
391 VGAState *s = opaque;
395 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
397 VGAState *s = opaque;
399 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
400 #ifdef DEBUG_BOCHS_VBE
401 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
403 switch(s->vbe_index) {
404 case VBE_DISPI_INDEX_ID:
405 if (val == VBE_DISPI_ID0 ||
406 val == VBE_DISPI_ID1 ||
407 val == VBE_DISPI_ID2) {
408 s->vbe_regs[s->vbe_index] = val;
411 case VBE_DISPI_INDEX_XRES:
412 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
413 s->vbe_regs[s->vbe_index] = val;
416 case VBE_DISPI_INDEX_YRES:
417 if (val <= VBE_DISPI_MAX_YRES) {
418 s->vbe_regs[s->vbe_index] = val;
421 case VBE_DISPI_INDEX_BPP:
424 if (val == 4 || val == 8 || val == 15 ||
425 val == 16 || val == 24 || val == 32) {
426 s->vbe_regs[s->vbe_index] = val;
429 case VBE_DISPI_INDEX_BANK:
430 val &= s->vbe_bank_mask;
431 s->vbe_regs[s->vbe_index] = val;
432 s->bank_offset = (val << 16);
434 case VBE_DISPI_INDEX_ENABLE:
435 if (val & VBE_DISPI_ENABLED) {
436 int h, shift_control;
438 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
439 s->vbe_regs[VBE_DISPI_INDEX_XRES];
440 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
441 s->vbe_regs[VBE_DISPI_INDEX_YRES];
442 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
443 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
445 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
446 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
448 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
449 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
450 s->vbe_start_addr = 0;
452 /* clear the screen (should be done in BIOS) */
453 if (!(val & VBE_DISPI_NOCLEARMEM)) {
454 memset(s->vram_ptr, 0,
455 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
458 /* we initialize the VGA graphic mode (should be done
460 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
461 s->cr[0x17] |= 3; /* no CGA modes */
462 s->cr[0x13] = s->vbe_line_offset >> 3;
464 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
466 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
468 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
469 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
470 /* line compare to 1023 */
475 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
477 s->sr[0x01] &= ~8; /* no double line */
480 s->sr[4] |= 0x08; /* set chain 4 mode */
481 s->sr[2] |= 0x0f; /* activate all planes */
483 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
484 s->cr[0x09] &= ~0x9f; /* no double scan */
486 /* XXX: the bios should do that */
489 s->vbe_regs[s->vbe_index] = val;
491 case VBE_DISPI_INDEX_VIRT_WIDTH:
493 int w, h, line_offset;
495 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
498 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
499 line_offset = w >> 1;
501 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
502 h = s->vram_size / line_offset;
503 /* XXX: support weird bochs semantics ? */
504 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
506 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
507 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
508 s->vbe_line_offset = line_offset;
511 case VBE_DISPI_INDEX_X_OFFSET:
512 case VBE_DISPI_INDEX_Y_OFFSET:
515 s->vbe_regs[s->vbe_index] = val;
516 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
517 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
518 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
519 s->vbe_start_addr += x >> 1;
521 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
522 s->vbe_start_addr >>= 2;
532 /* called for accesses between 0xa0000 and 0xc0000 */
533 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
535 VGAState *s = opaque;
536 int memory_map_mode, plane;
539 /* convert to VGA memory offset */
540 memory_map_mode = (s->gr[6] >> 2) & 3;
542 switch(memory_map_mode) {
548 addr += s->bank_offset;
563 if (s->sr[4] & 0x08) {
564 /* chain 4 mode : simplest access */
565 ret = s->vram_ptr[addr];
566 } else if (s->gr[5] & 0x10) {
567 /* odd/even mode (aka text mode mapping) */
568 plane = (s->gr[4] & 2) | (addr & 1);
569 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
571 /* standard VGA latched access */
572 s->latch = ((uint32_t *)s->vram_ptr)[addr];
574 if (!(s->gr[5] & 0x08)) {
577 ret = GET_PLANE(s->latch, plane);
580 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
589 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
592 #ifdef TARGET_WORDS_BIGENDIAN
593 v = vga_mem_readb(opaque, addr) << 8;
594 v |= vga_mem_readb(opaque, addr + 1);
596 v = vga_mem_readb(opaque, addr);
597 v |= vga_mem_readb(opaque, addr + 1) << 8;
602 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
605 #ifdef TARGET_WORDS_BIGENDIAN
606 v = vga_mem_readb(opaque, addr) << 24;
607 v |= vga_mem_readb(opaque, addr + 1) << 16;
608 v |= vga_mem_readb(opaque, addr + 2) << 8;
609 v |= vga_mem_readb(opaque, addr + 3);
611 v = vga_mem_readb(opaque, addr);
612 v |= vga_mem_readb(opaque, addr + 1) << 8;
613 v |= vga_mem_readb(opaque, addr + 2) << 16;
614 v |= vga_mem_readb(opaque, addr + 3) << 24;
619 /* called for accesses between 0xa0000 and 0xc0000 */
620 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
622 VGAState *s = opaque;
623 int memory_map_mode, plane, write_mode, b, func_select, mask;
624 uint32_t write_mask, bit_mask, set_mask;
627 printf("vga: [0x%x] = 0x%02x\n", addr, val);
629 /* convert to VGA memory offset */
630 memory_map_mode = (s->gr[6] >> 2) & 3;
632 switch(memory_map_mode) {
638 addr += s->bank_offset;
653 if (s->sr[4] & 0x08) {
654 /* chain 4 mode : simplest access */
657 if (s->sr[2] & mask) {
658 s->vram_ptr[addr] = val;
660 printf("vga: chain4: [0x%x]\n", addr);
662 s->plane_updated |= mask; /* only used to detect font change */
663 cpu_physical_memory_set_dirty(s->vram_offset + addr);
665 } else if (s->gr[5] & 0x10) {
666 /* odd/even mode (aka text mode mapping) */
667 plane = (s->gr[4] & 2) | (addr & 1);
669 if (s->sr[2] & mask) {
670 addr = ((addr & ~1) << 1) | plane;
671 s->vram_ptr[addr] = val;
673 printf("vga: odd/even: [0x%x]\n", addr);
675 s->plane_updated |= mask; /* only used to detect font change */
676 cpu_physical_memory_set_dirty(s->vram_offset + addr);
679 /* standard VGA latched access */
680 write_mode = s->gr[5] & 3;
686 val = ((val >> b) | (val << (8 - b))) & 0xff;
690 /* apply set/reset mask */
691 set_mask = mask16[s->gr[1]];
692 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
699 val = mask16[val & 0x0f];
705 val = (val >> b) | (val << (8 - b));
707 bit_mask = s->gr[8] & val;
708 val = mask16[s->gr[0]];
712 /* apply logical operation */
713 func_select = s->gr[3] >> 3;
714 switch(func_select) {
734 bit_mask |= bit_mask << 8;
735 bit_mask |= bit_mask << 16;
736 val = (val & bit_mask) | (s->latch & ~bit_mask);
739 /* mask data according to sr[2] */
741 s->plane_updated |= mask; /* only used to detect font change */
742 write_mask = mask16[mask];
743 ((uint32_t *)s->vram_ptr)[addr] =
744 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
747 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
748 addr * 4, write_mask, val);
750 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
754 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
756 #ifdef TARGET_WORDS_BIGENDIAN
757 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
758 vga_mem_writeb(opaque, addr + 1, val & 0xff);
760 vga_mem_writeb(opaque, addr, val & 0xff);
761 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
765 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
767 #ifdef TARGET_WORDS_BIGENDIAN
768 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
769 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
770 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
771 vga_mem_writeb(opaque, addr + 3, val & 0xff);
773 vga_mem_writeb(opaque, addr, val & 0xff);
774 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
775 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
776 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
780 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
781 const uint8_t *font_ptr, int h,
782 uint32_t fgcol, uint32_t bgcol);
783 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
784 const uint8_t *font_ptr, int h,
785 uint32_t fgcol, uint32_t bgcol, int dup9);
786 typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
787 const uint8_t *s, int width);
789 static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
791 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
794 static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
796 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
799 static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
801 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
804 static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
806 return (r << 16) | (g << 8) | b;
810 #include "vga_template.h"
813 #include "vga_template.h"
816 #include "vga_template.h"
819 #include "vga_template.h"
821 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
824 col = rgb_to_pixel8(r, g, b);
830 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
833 col = rgb_to_pixel15(r, g, b);
838 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
841 col = rgb_to_pixel16(r, g, b);
846 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
849 col = rgb_to_pixel32(r, g, b);
853 /* return true if the palette was modified */
854 static int update_palette16(VGAState *s)
857 uint32_t v, col, *palette;
860 palette = s->last_palette;
861 for(i = 0; i < 16; i++) {
863 if (s->ar[0x10] & 0x80)
864 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
866 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
868 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
869 c6_to_8(s->palette[v + 1]),
870 c6_to_8(s->palette[v + 2]));
871 if (col != palette[i]) {
879 /* return true if the palette was modified */
880 static int update_palette256(VGAState *s)
883 uint32_t v, col, *palette;
886 palette = s->last_palette;
888 for(i = 0; i < 256; i++) {
889 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
890 c6_to_8(s->palette[v + 1]),
891 c6_to_8(s->palette[v + 2]));
892 if (col != palette[i]) {
901 static void vga_get_offsets(VGAState *s,
902 uint32_t *pline_offset,
903 uint32_t *pstart_addr)
905 uint32_t start_addr, line_offset;
906 #ifdef CONFIG_BOCHS_VBE
907 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
908 line_offset = s->vbe_line_offset;
909 start_addr = s->vbe_start_addr;
913 /* compute line_offset in bytes */
914 line_offset = s->cr[0x13];
917 /* starting address */
918 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
920 *pline_offset = line_offset;
921 *pstart_addr = start_addr;
924 /* update start_addr and line_offset. Return TRUE if modified */
925 static int update_basic_params(VGAState *s)
928 uint32_t start_addr, line_offset, line_compare;
932 s->get_offsets(s, &line_offset, &start_addr);
934 line_compare = s->cr[0x18] |
935 ((s->cr[0x07] & 0x10) << 4) |
936 ((s->cr[0x09] & 0x40) << 3);
938 if (line_offset != s->line_offset ||
939 start_addr != s->start_addr ||
940 line_compare != s->line_compare) {
941 s->line_offset = line_offset;
942 s->start_addr = start_addr;
943 s->line_compare = line_compare;
949 static inline int get_depth_index(int depth)
964 static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = {
971 static vga_draw_glyph8_func *vga_draw_glyph16_table[4] = {
978 static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = {
985 static const uint8_t cursor_glyph[32 * 4] = {
986 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
987 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
988 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
989 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
990 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
991 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
992 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
993 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
994 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
995 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
996 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
997 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
998 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
999 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1000 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1001 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1012 static void vga_draw_text(VGAState *s, int full_update)
1014 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1015 int cx_min, cx_max, linesize, x_incr;
1016 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1017 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1018 const uint8_t *font_ptr, *font_base[2];
1019 int dup9, line_offset, depth_index;
1021 uint32_t *ch_attr_ptr;
1022 vga_draw_glyph8_func *vga_draw_glyph8;
1023 vga_draw_glyph9_func *vga_draw_glyph9;
1025 full_update |= update_palette16(s);
1026 palette = s->last_palette;
1028 /* compute font data address (in plane 2) */
1030 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1031 if (offset != s->font_offsets[0]) {
1032 s->font_offsets[0] = offset;
1035 font_base[0] = s->vram_ptr + offset;
1037 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1038 font_base[1] = s->vram_ptr + offset;
1039 if (offset != s->font_offsets[1]) {
1040 s->font_offsets[1] = offset;
1043 if (s->plane_updated & (1 << 2)) {
1044 /* if the plane 2 was modified since the last display, it
1045 indicates the font may have been modified */
1046 s->plane_updated = 0;
1049 full_update |= update_basic_params(s);
1051 line_offset = s->line_offset;
1052 s1 = s->vram_ptr + (s->start_addr * 4);
1054 /* total width & height */
1055 cheight = (s->cr[9] & 0x1f) + 1;
1057 if (!(s->sr[1] & 0x01))
1059 if (s->sr[1] & 0x08)
1060 cw = 16; /* NOTE: no 18 pixel wide */
1061 x_incr = cw * ((s->ds->depth + 7) >> 3);
1062 width = (s->cr[0x01] + 1);
1063 if (s->cr[0x06] == 100) {
1064 /* ugly hack for CGA 160x100x16 - explain me the logic */
1067 height = s->cr[0x12] |
1068 ((s->cr[0x07] & 0x02) << 7) |
1069 ((s->cr[0x07] & 0x40) << 3);
1070 height = (height + 1) / cheight;
1072 if ((height * width) > CH_ATTR_SIZE) {
1073 /* better than nothing: exit if transient size is too big */
1077 if (width != s->last_width || height != s->last_height ||
1078 cw != s->last_cw || cheight != s->last_ch) {
1079 s->last_scr_width = width * cw;
1080 s->last_scr_height = height * cheight;
1081 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
1082 s->last_width = width;
1083 s->last_height = height;
1084 s->last_ch = cheight;
1088 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1089 if (cursor_offset != s->cursor_offset ||
1090 s->cr[0xa] != s->cursor_start ||
1091 s->cr[0xb] != s->cursor_end) {
1092 /* if the cursor position changed, we update the old and new
1094 if (s->cursor_offset < CH_ATTR_SIZE)
1095 s->last_ch_attr[s->cursor_offset] = -1;
1096 if (cursor_offset < CH_ATTR_SIZE)
1097 s->last_ch_attr[cursor_offset] = -1;
1098 s->cursor_offset = cursor_offset;
1099 s->cursor_start = s->cr[0xa];
1100 s->cursor_end = s->cr[0xb];
1102 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1104 depth_index = get_depth_index(s->ds->depth);
1106 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1108 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1109 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1112 linesize = s->ds->linesize;
1113 ch_attr_ptr = s->last_ch_attr;
1114 for(cy = 0; cy < height; cy++) {
1119 for(cx = 0; cx < width; cx++) {
1120 ch_attr = *(uint16_t *)src;
1121 if (full_update || ch_attr != *ch_attr_ptr) {
1126 *ch_attr_ptr = ch_attr;
1127 #ifdef WORDS_BIGENDIAN
1129 cattr = ch_attr & 0xff;
1131 ch = ch_attr & 0xff;
1132 cattr = ch_attr >> 8;
1134 font_ptr = font_base[(cattr >> 3) & 1];
1135 font_ptr += 32 * 4 * ch;
1136 bgcol = palette[cattr >> 4];
1137 fgcol = palette[cattr & 0x0f];
1139 vga_draw_glyph8(d1, linesize,
1140 font_ptr, cheight, fgcol, bgcol);
1143 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1145 vga_draw_glyph9(d1, linesize,
1146 font_ptr, cheight, fgcol, bgcol, dup9);
1148 if (src == cursor_ptr &&
1149 !(s->cr[0x0a] & 0x20)) {
1150 int line_start, line_last, h;
1151 /* draw the cursor */
1152 line_start = s->cr[0x0a] & 0x1f;
1153 line_last = s->cr[0x0b] & 0x1f;
1154 /* XXX: check that */
1155 if (line_last > cheight - 1)
1156 line_last = cheight - 1;
1157 if (line_last >= line_start && line_start < cheight) {
1158 h = line_last - line_start + 1;
1159 d = d1 + linesize * line_start;
1161 vga_draw_glyph8(d, linesize,
1162 cursor_glyph, h, fgcol, bgcol);
1164 vga_draw_glyph9(d, linesize,
1165 cursor_glyph, h, fgcol, bgcol, 1);
1175 dpy_update(s->ds, cx_min * cw, cy * cheight,
1176 (cx_max - cx_min + 1) * cw, cheight);
1178 dest += linesize * cheight;
1197 static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = {
1204 vga_draw_line2d2_16,
1205 vga_draw_line2d2_16,
1206 vga_draw_line2d2_32,
1214 vga_draw_line4d2_16,
1215 vga_draw_line4d2_16,
1216 vga_draw_line4d2_32,
1219 vga_draw_line8d2_16,
1220 vga_draw_line8d2_16,
1221 vga_draw_line8d2_32,
1249 static int vga_get_bpp(VGAState *s)
1252 #ifdef CONFIG_BOCHS_VBE
1253 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1254 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1263 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1267 width = (s->cr[0x01] + 1) * 8;
1268 height = s->cr[0x12] |
1269 ((s->cr[0x07] & 0x02) << 7) |
1270 ((s->cr[0x07] & 0x40) << 3);
1271 height = (height + 1);
1276 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1279 if (y1 >= VGA_MAX_HEIGHT)
1281 if (y2 >= VGA_MAX_HEIGHT)
1282 y2 = VGA_MAX_HEIGHT;
1283 for(y = y1; y < y2; y++) {
1284 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1291 static void vga_draw_graphic(VGAState *s, int full_update)
1293 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1294 int width, height, shift_control, line_offset, page0, page1, bwidth;
1295 int disp_width, multi_scan, multi_run;
1297 uint32_t v, addr1, addr;
1298 vga_draw_line_func *vga_draw_line;
1300 full_update |= update_basic_params(s);
1302 s->get_resolution(s, &width, &height);
1305 shift_control = (s->gr[0x05] >> 5) & 3;
1306 double_scan = (s->cr[0x09] >> 7);
1307 if (shift_control != 1) {
1308 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1310 /* in CGA modes, multi_scan is ignored */
1311 /* XXX: is it correct ? */
1312 multi_scan = double_scan;
1314 multi_run = multi_scan;
1315 if (shift_control != s->shift_control ||
1316 double_scan != s->double_scan) {
1318 s->shift_control = shift_control;
1319 s->double_scan = double_scan;
1322 if (shift_control == 0) {
1323 full_update |= update_palette16(s);
1324 if (s->sr[0x01] & 8) {
1325 v = VGA_DRAW_LINE4D2;
1330 } else if (shift_control == 1) {
1331 full_update |= update_palette16(s);
1332 if (s->sr[0x01] & 8) {
1333 v = VGA_DRAW_LINE2D2;
1339 switch(s->get_bpp(s)) {
1342 full_update |= update_palette256(s);
1343 v = VGA_DRAW_LINE8D2;
1346 full_update |= update_palette256(s);
1350 v = VGA_DRAW_LINE15;
1353 v = VGA_DRAW_LINE16;
1356 v = VGA_DRAW_LINE24;
1359 v = VGA_DRAW_LINE32;
1363 vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)];
1365 if (disp_width != s->last_width ||
1366 height != s->last_height) {
1367 dpy_resize(s->ds, disp_width, height);
1368 s->last_scr_width = disp_width;
1369 s->last_scr_height = height;
1370 s->last_width = disp_width;
1371 s->last_height = height;
1374 if (s->cursor_invalidate)
1375 s->cursor_invalidate(s);
1377 line_offset = s->line_offset;
1379 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",
1380 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1382 addr1 = (s->start_addr * 4);
1385 page_min = 0x7fffffff;
1388 linesize = s->ds->linesize;
1390 for(y = 0; y < height; y++) {
1392 if (!(s->cr[0x17] & 1)) {
1394 /* CGA compatibility handling */
1395 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1396 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1398 if (!(s->cr[0x17] & 2)) {
1399 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1401 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1402 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1403 update = full_update |
1404 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1405 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1406 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1407 /* if wide line, can use another page */
1408 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1411 /* explicit invalidation for the hardware cursor */
1412 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1416 if (page0 < page_min)
1418 if (page1 > page_max)
1420 vga_draw_line(s, d, s->vram_ptr + addr, width);
1421 if (s->cursor_draw_line)
1422 s->cursor_draw_line(s, d, y);
1425 /* flush to display */
1426 dpy_update(s->ds, 0, y_start,
1427 disp_width, y - y_start);
1432 mask = (s->cr[0x17] & 3) ^ 3;
1433 if ((y1 & mask) == mask)
1434 addr1 += line_offset;
1436 multi_run = multi_scan;
1440 /* line compare acts on the displayed lines */
1441 if (y == s->line_compare)
1446 /* flush to display */
1447 dpy_update(s->ds, 0, y_start,
1448 disp_width, y - y_start);
1450 /* reset modified pages */
1451 if (page_max != -1) {
1452 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1455 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1458 static void vga_draw_blank(VGAState *s, int full_update)
1465 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1467 if (s->ds->depth == 8)
1468 val = s->rgb_to_pixel(0, 0, 0);
1471 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1473 for(i = 0; i < s->last_scr_height; i++) {
1475 d += s->ds->linesize;
1477 dpy_update(s->ds, 0, 0,
1478 s->last_scr_width, s->last_scr_height);
1481 #define GMODE_TEXT 0
1482 #define GMODE_GRAPH 1
1483 #define GMODE_BLANK 2
1485 void vga_update_display(void)
1487 VGAState *s = vga_state;
1488 int full_update, graphic_mode;
1490 if (s->ds->depth == 0) {
1493 switch(s->ds->depth) {
1495 s->rgb_to_pixel = rgb_to_pixel8_dup;
1498 s->rgb_to_pixel = rgb_to_pixel15_dup;
1502 s->rgb_to_pixel = rgb_to_pixel16_dup;
1505 s->rgb_to_pixel = rgb_to_pixel32_dup;
1510 if (!(s->ar_index & 0x20)) {
1511 graphic_mode = GMODE_BLANK;
1513 graphic_mode = s->gr[6] & 1;
1515 if (graphic_mode != s->graphic_mode) {
1516 s->graphic_mode = graphic_mode;
1519 switch(graphic_mode) {
1521 vga_draw_text(s, full_update);
1524 vga_draw_graphic(s, full_update);
1528 vga_draw_blank(s, full_update);
1534 /* force a full display refresh */
1535 void vga_invalidate_display(void)
1537 VGAState *s = vga_state;
1540 s->last_height = -1;
1543 static void vga_reset(VGAState *s)
1545 memset(s, 0, sizeof(VGAState));
1546 s->graphic_mode = -1; /* force full update */
1549 static CPUReadMemoryFunc *vga_mem_read[3] = {
1555 static CPUWriteMemoryFunc *vga_mem_write[3] = {
1561 static void vga_save(QEMUFile *f, void *opaque)
1563 VGAState *s = opaque;
1566 qemu_put_be32s(f, &s->latch);
1567 qemu_put_8s(f, &s->sr_index);
1568 qemu_put_buffer(f, s->sr, 8);
1569 qemu_put_8s(f, &s->gr_index);
1570 qemu_put_buffer(f, s->gr, 16);
1571 qemu_put_8s(f, &s->ar_index);
1572 qemu_put_buffer(f, s->ar, 21);
1573 qemu_put_be32s(f, &s->ar_flip_flop);
1574 qemu_put_8s(f, &s->cr_index);
1575 qemu_put_buffer(f, s->cr, 256);
1576 qemu_put_8s(f, &s->msr);
1577 qemu_put_8s(f, &s->fcr);
1578 qemu_put_8s(f, &s->st00);
1579 qemu_put_8s(f, &s->st01);
1581 qemu_put_8s(f, &s->dac_state);
1582 qemu_put_8s(f, &s->dac_sub_index);
1583 qemu_put_8s(f, &s->dac_read_index);
1584 qemu_put_8s(f, &s->dac_write_index);
1585 qemu_put_buffer(f, s->dac_cache, 3);
1586 qemu_put_buffer(f, s->palette, 768);
1588 qemu_put_be32s(f, &s->bank_offset);
1589 #ifdef CONFIG_BOCHS_VBE
1590 qemu_put_byte(f, 1);
1591 qemu_put_be16s(f, &s->vbe_index);
1592 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1593 qemu_put_be16s(f, &s->vbe_regs[i]);
1594 qemu_put_be32s(f, &s->vbe_start_addr);
1595 qemu_put_be32s(f, &s->vbe_line_offset);
1596 qemu_put_be32s(f, &s->vbe_bank_mask);
1598 qemu_put_byte(f, 0);
1602 static int vga_load(QEMUFile *f, void *opaque, int version_id)
1604 VGAState *s = opaque;
1607 if (version_id != 1)
1610 qemu_get_be32s(f, &s->latch);
1611 qemu_get_8s(f, &s->sr_index);
1612 qemu_get_buffer(f, s->sr, 8);
1613 qemu_get_8s(f, &s->gr_index);
1614 qemu_get_buffer(f, s->gr, 16);
1615 qemu_get_8s(f, &s->ar_index);
1616 qemu_get_buffer(f, s->ar, 21);
1617 qemu_get_be32s(f, &s->ar_flip_flop);
1618 qemu_get_8s(f, &s->cr_index);
1619 qemu_get_buffer(f, s->cr, 256);
1620 qemu_get_8s(f, &s->msr);
1621 qemu_get_8s(f, &s->fcr);
1622 qemu_get_8s(f, &s->st00);
1623 qemu_get_8s(f, &s->st01);
1625 qemu_get_8s(f, &s->dac_state);
1626 qemu_get_8s(f, &s->dac_sub_index);
1627 qemu_get_8s(f, &s->dac_read_index);
1628 qemu_get_8s(f, &s->dac_write_index);
1629 qemu_get_buffer(f, s->dac_cache, 3);
1630 qemu_get_buffer(f, s->palette, 768);
1632 qemu_get_be32s(f, &s->bank_offset);
1633 is_vbe = qemu_get_byte(f);
1634 #ifdef CONFIG_BOCHS_VBE
1637 qemu_get_be16s(f, &s->vbe_index);
1638 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1639 qemu_get_be16s(f, &s->vbe_regs[i]);
1640 qemu_get_be32s(f, &s->vbe_start_addr);
1641 qemu_get_be32s(f, &s->vbe_line_offset);
1642 qemu_get_be32s(f, &s->vbe_bank_mask);
1649 s->graphic_mode = -1;
1653 static void vga_map(PCIDevice *pci_dev, int region_num,
1654 uint32_t addr, uint32_t size, int type)
1656 VGAState *s = vga_state;
1657 if (region_num == PCI_ROM_SLOT) {
1658 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
1660 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1664 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1665 unsigned long vga_ram_offset, int vga_ram_size)
1669 for(i = 0;i < 256; i++) {
1671 for(j = 0; j < 8; j++) {
1672 v |= ((i >> j) & 1) << (j * 4);
1677 for(j = 0; j < 4; j++) {
1678 v |= ((i >> (2 * j)) & 3) << (j * 4);
1682 for(i = 0; i < 16; i++) {
1684 for(j = 0; j < 4; j++) {
1687 v |= b << (2 * j + 1);
1694 s->vram_ptr = vga_ram_base;
1695 s->vram_offset = vga_ram_offset;
1696 s->vram_size = vga_ram_size;
1698 s->get_bpp = vga_get_bpp;
1699 s->get_offsets = vga_get_offsets;
1700 s->get_resolution = vga_get_resolution;
1701 /* XXX: currently needed for display */
1706 int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
1707 unsigned long vga_ram_offset, int vga_ram_size,
1708 unsigned long vga_bios_offset, int vga_bios_size)
1712 s = qemu_mallocz(sizeof(VGAState));
1716 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1718 register_savevm("vga", 0, 1, vga_save, vga_load, s);
1720 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
1722 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1723 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1724 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1725 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
1727 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
1729 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1730 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1731 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1732 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
1735 #ifdef CONFIG_BOCHS_VBE
1736 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1737 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
1738 #if defined (TARGET_I386)
1739 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1740 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
1742 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1743 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
1745 /* old Bochs IO ports */
1746 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1747 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
1749 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1750 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1752 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1753 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1755 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1756 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
1758 #endif /* CONFIG_BOCHS_VBE */
1760 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
1761 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1768 d = pci_register_device(bus, "VGA",
1771 pci_conf = d->config;
1772 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1773 pci_conf[0x01] = 0x12;
1774 pci_conf[0x02] = 0x11;
1775 pci_conf[0x03] = 0x11;
1776 pci_conf[0x0a] = 0x00; // VGA controller
1777 pci_conf[0x0b] = 0x03;
1778 pci_conf[0x0e] = 0x00; // header_type
1780 /* XXX: vga_ram_size must be a power of two */
1781 pci_register_io_region(d, 0, vga_ram_size,
1782 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1783 if (vga_bios_size != 0) {
1784 unsigned int bios_total_size;
1785 s->bios_offset = vga_bios_offset;
1786 s->bios_size = vga_bios_size;
1787 /* must be a power of two */
1788 bios_total_size = 1;
1789 while (bios_total_size < vga_bios_size)
1790 bios_total_size <<= 1;
1791 pci_register_io_region(d, PCI_ROM_SLOT, bios_total_size,
1792 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1795 #ifdef CONFIG_BOCHS_VBE
1796 /* XXX: use optimized standard vga accesses */
1797 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1798 vga_ram_size, vga_ram_offset);
1804 /********************************************************/
1805 /* vga screen dump */
1807 static int vga_save_w, vga_save_h;
1809 static void vga_save_dpy_update(DisplayState *s,
1810 int x, int y, int w, int h)
1814 static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1816 s->linesize = w * 4;
1817 s->data = qemu_malloc(h * s->linesize);
1822 static void vga_save_dpy_refresh(DisplayState *s)
1826 static int ppm_save(const char *filename, uint8_t *data,
1827 int w, int h, int linesize)
1834 f = fopen(filename, "wb");
1837 fprintf(f, "P6\n%d %d\n%d\n",
1840 for(y = 0; y < h; y++) {
1842 for(x = 0; x < w; x++) {
1844 fputc((v >> 16) & 0xff, f);
1845 fputc((v >> 8) & 0xff, f);
1846 fputc((v) & 0xff, f);
1855 /* save the vga display in a PPM image even if no display is
1857 void vga_screen_dump(const char *filename)
1859 VGAState *s = vga_state;
1860 DisplayState *saved_ds, ds1, *ds = &ds1;
1862 /* XXX: this is a little hackish */
1863 vga_invalidate_display();
1866 memset(ds, 0, sizeof(DisplayState));
1867 ds->dpy_update = vga_save_dpy_update;
1868 ds->dpy_resize = vga_save_dpy_resize;
1869 ds->dpy_refresh = vga_save_dpy_refresh;
1873 s->graphic_mode = -1;
1874 vga_update_display();
1877 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1879 qemu_free(ds->data);