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->dac_write_index;
197 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
198 if (++s->dac_sub_index == 3) {
199 s->dac_sub_index = 0;
213 val = s->gr[s->gr_index];
215 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
224 val = s->cr[s->cr_index];
226 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
229 if (s->cr_index >= 0x20)
230 printf("S3: CR read index=0x%x val=0x%x\n",
236 /* just toggle to fool polling */
237 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
246 #if defined(DEBUG_VGA)
247 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
252 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
254 VGAState *s = opaque;
257 /* check port range access depending on color/monochrome mode */
258 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
259 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
263 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
268 if (s->ar_flip_flop == 0) {
272 index = s->ar_index & 0x1f;
275 s->ar[index] = val & 0x3f;
278 s->ar[index] = val & ~0x10;
284 s->ar[index] = val & ~0xc0;
287 s->ar[index] = val & ~0xf0;
290 s->ar[index] = val & ~0xf0;
296 s->ar_flip_flop ^= 1;
299 s->msr = val & ~0x10;
302 s->sr_index = val & 7;
306 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
308 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
311 s->dac_read_index = val;
312 s->dac_sub_index = 0;
316 s->dac_write_index = val;
317 s->dac_sub_index = 0;
321 s->dac_cache[s->dac_sub_index] = val;
322 if (++s->dac_sub_index == 3) {
323 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
324 s->dac_sub_index = 0;
325 s->dac_write_index++;
329 s->gr_index = val & 0x0f;
333 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
335 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
344 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
346 /* handle CR0-7 protection */
347 if ((s->cr[11] & 0x80) && s->cr_index <= 7) {
348 /* can always write bit 4 of CR7 */
349 if (s->cr_index == 7)
350 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
353 switch(s->cr_index) {
354 case 0x01: /* horizontal display end */
359 case 0x12: /* veritcal display end */
360 s->cr[s->cr_index] = val;
369 /* chip ID, cannot write */
372 /* update start address */
375 s->cr[s->cr_index] = val;
377 s->cr[0x69] = (s->cr[69] & ~0x03) | v;
381 /* update start address */
384 s->cr[s->cr_index] = val;
386 s->cr[0x69] = (s->cr[69] & ~0x0c) | (v << 2);
391 s->cr[s->cr_index] = val;
395 if (s->cr_index >= 0x20)
396 printf("S3: CR write index=0x%x val=0x%x\n",
407 #ifdef CONFIG_BOCHS_VBE
408 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
410 VGAState *s = opaque;
416 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
418 VGAState *s = opaque;
421 if (s->vbe_index <= VBE_DISPI_INDEX_NB)
422 val = s->vbe_regs[s->vbe_index];
425 #ifdef DEBUG_BOCHS_VBE
426 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
431 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
433 VGAState *s = opaque;
437 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
439 VGAState *s = opaque;
441 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
442 #ifdef DEBUG_BOCHS_VBE
443 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
445 switch(s->vbe_index) {
446 case VBE_DISPI_INDEX_ID:
447 if (val == VBE_DISPI_ID0 ||
448 val == VBE_DISPI_ID1 ||
449 val == VBE_DISPI_ID2) {
450 s->vbe_regs[s->vbe_index] = val;
453 case VBE_DISPI_INDEX_XRES:
454 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
455 s->vbe_regs[s->vbe_index] = val;
458 case VBE_DISPI_INDEX_YRES:
459 if (val <= VBE_DISPI_MAX_YRES) {
460 s->vbe_regs[s->vbe_index] = val;
463 case VBE_DISPI_INDEX_BPP:
466 if (val == 4 || val == 8 || val == 15 ||
467 val == 16 || val == 24 || val == 32) {
468 s->vbe_regs[s->vbe_index] = val;
471 case VBE_DISPI_INDEX_BANK:
472 val &= s->vbe_bank_mask;
473 s->vbe_regs[s->vbe_index] = val;
474 s->bank_offset = (val << 16);
476 case VBE_DISPI_INDEX_ENABLE:
477 if (val & VBE_DISPI_ENABLED) {
478 int h, shift_control;
480 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
481 s->vbe_regs[VBE_DISPI_INDEX_XRES];
482 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
483 s->vbe_regs[VBE_DISPI_INDEX_YRES];
484 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
485 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
487 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
488 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
490 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
491 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
492 s->vbe_start_addr = 0;
494 /* clear the screen (should be done in BIOS) */
495 if (!(val & VBE_DISPI_NOCLEARMEM)) {
496 memset(s->vram_ptr, 0,
497 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
500 /* we initialize the VGA graphic mode (should be done
502 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
503 s->cr[0x17] |= 3; /* no CGA modes */
504 s->cr[0x13] = s->vbe_line_offset >> 3;
506 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
508 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
510 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
511 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
512 /* line compare to 1023 */
517 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
519 s->sr[0x01] &= ~8; /* no double line */
522 s->sr[4] |= 0x08; /* set chain 4 mode */
523 s->sr[2] |= 0x0f; /* activate all planes */
525 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
526 s->cr[0x09] &= ~0x9f; /* no double scan */
528 /* XXX: the bios should do that */
531 s->vbe_regs[s->vbe_index] = val;
533 case VBE_DISPI_INDEX_VIRT_WIDTH:
535 int w, h, line_offset;
537 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
540 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
541 line_offset = w >> 1;
543 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
544 h = s->vram_size / line_offset;
545 /* XXX: support weird bochs semantics ? */
546 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
548 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
549 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
550 s->vbe_line_offset = line_offset;
553 case VBE_DISPI_INDEX_X_OFFSET:
554 case VBE_DISPI_INDEX_Y_OFFSET:
557 s->vbe_regs[s->vbe_index] = val;
558 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
559 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
560 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
561 s->vbe_start_addr += x >> 1;
563 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
564 s->vbe_start_addr >>= 2;
574 /* called for accesses between 0xa0000 and 0xc0000 */
575 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
577 VGAState *s = opaque;
578 int memory_map_mode, plane;
581 /* convert to VGA memory offset */
582 memory_map_mode = (s->gr[6] >> 2) & 3;
584 switch(memory_map_mode) {
590 addr += s->bank_offset;
605 if (s->sr[4] & 0x08) {
606 /* chain 4 mode : simplest access */
607 ret = s->vram_ptr[addr];
608 } else if (s->gr[5] & 0x10) {
609 /* odd/even mode (aka text mode mapping) */
610 plane = (s->gr[4] & 2) | (addr & 1);
611 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
613 /* standard VGA latched access */
614 s->latch = ((uint32_t *)s->vram_ptr)[addr];
616 if (!(s->gr[5] & 0x08)) {
619 ret = GET_PLANE(s->latch, plane);
622 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
631 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
634 #ifdef TARGET_WORDS_BIGENDIAN
635 v = vga_mem_readb(opaque, addr) << 8;
636 v |= vga_mem_readb(opaque, addr + 1);
638 v = vga_mem_readb(opaque, addr);
639 v |= vga_mem_readb(opaque, addr + 1) << 8;
644 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
647 #ifdef TARGET_WORDS_BIGENDIAN
648 v = vga_mem_readb(opaque, addr) << 24;
649 v |= vga_mem_readb(opaque, addr + 1) << 16;
650 v |= vga_mem_readb(opaque, addr + 2) << 8;
651 v |= vga_mem_readb(opaque, addr + 3);
653 v = vga_mem_readb(opaque, addr);
654 v |= vga_mem_readb(opaque, addr + 1) << 8;
655 v |= vga_mem_readb(opaque, addr + 2) << 16;
656 v |= vga_mem_readb(opaque, addr + 3) << 24;
661 /* called for accesses between 0xa0000 and 0xc0000 */
662 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
664 VGAState *s = opaque;
665 int memory_map_mode, plane, write_mode, b, func_select;
666 uint32_t write_mask, bit_mask, set_mask;
669 printf("vga: [0x%x] = 0x%02x\n", addr, val);
671 /* convert to VGA memory offset */
672 memory_map_mode = (s->gr[6] >> 2) & 3;
674 switch(memory_map_mode) {
680 addr += s->bank_offset;
695 if (s->sr[4] & 0x08) {
696 /* chain 4 mode : simplest access */
698 if (s->sr[2] & (1 << plane)) {
699 s->vram_ptr[addr] = val;
701 printf("vga: chain4: [0x%x]\n", addr);
703 cpu_physical_memory_set_dirty(s->vram_offset + addr);
705 } else if (s->gr[5] & 0x10) {
706 /* odd/even mode (aka text mode mapping) */
707 plane = (s->gr[4] & 2) | (addr & 1);
708 if (s->sr[2] & (1 << plane)) {
709 addr = ((addr & ~1) << 1) | plane;
710 s->vram_ptr[addr] = val;
712 printf("vga: odd/even: [0x%x]\n", addr);
714 cpu_physical_memory_set_dirty(s->vram_offset + addr);
717 /* standard VGA latched access */
718 write_mode = s->gr[5] & 3;
724 val = ((val >> b) | (val << (8 - b))) & 0xff;
728 /* apply set/reset mask */
729 set_mask = mask16[s->gr[1]];
730 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
737 val = mask16[val & 0x0f];
743 val = (val >> b) | (val << (8 - b));
745 bit_mask = s->gr[8] & val;
746 val = mask16[s->gr[0]];
750 /* apply logical operation */
751 func_select = s->gr[3] >> 3;
752 switch(func_select) {
772 bit_mask |= bit_mask << 8;
773 bit_mask |= bit_mask << 16;
774 val = (val & bit_mask) | (s->latch & ~bit_mask);
777 /* mask data according to sr[2] */
778 write_mask = mask16[s->sr[2]];
779 ((uint32_t *)s->vram_ptr)[addr] =
780 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
783 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
784 addr * 4, write_mask, val);
786 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
790 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
792 #ifdef TARGET_WORDS_BIGENDIAN
793 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
794 vga_mem_writeb(opaque, addr + 1, val & 0xff);
796 vga_mem_writeb(opaque, addr, val & 0xff);
797 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
801 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
803 #ifdef TARGET_WORDS_BIGENDIAN
804 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
805 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
806 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
807 vga_mem_writeb(opaque, addr + 3, val & 0xff);
809 vga_mem_writeb(opaque, addr, val & 0xff);
810 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
811 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
812 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
816 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
817 const uint8_t *font_ptr, int h,
818 uint32_t fgcol, uint32_t bgcol);
819 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
820 const uint8_t *font_ptr, int h,
821 uint32_t fgcol, uint32_t bgcol, int dup9);
822 typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
823 const uint8_t *s, int width);
825 static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
831 static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
833 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
836 static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
838 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
841 static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
843 return (r << 16) | (g << 8) | b;
847 #include "vga_template.h"
850 #include "vga_template.h"
853 #include "vga_template.h"
856 #include "vga_template.h"
858 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
861 col = rgb_to_pixel8(r, g, b);
867 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
870 col = rgb_to_pixel15(r, g, b);
875 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
878 col = rgb_to_pixel16(r, g, b);
883 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
886 col = rgb_to_pixel32(r, g, b);
890 /* return true if the palette was modified */
891 static int update_palette16(VGAState *s)
894 uint32_t v, col, *palette;
897 palette = s->last_palette;
898 for(i = 0; i < 16; i++) {
900 if (s->ar[0x10] & 0x80)
901 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
903 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
905 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
906 c6_to_8(s->palette[v + 1]),
907 c6_to_8(s->palette[v + 2]));
908 if (col != palette[i]) {
916 /* return true if the palette was modified */
917 static int update_palette256(VGAState *s)
920 uint32_t v, col, *palette;
923 palette = s->last_palette;
925 for(i = 0; i < 256; i++) {
926 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
927 c6_to_8(s->palette[v + 1]),
928 c6_to_8(s->palette[v + 2]));
929 if (col != palette[i]) {
938 static void vga_get_offsets(VGAState *s,
939 uint32_t *pline_offset,
940 uint32_t *pstart_addr)
942 uint32_t start_addr, line_offset;
943 #ifdef CONFIG_BOCHS_VBE
944 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
945 line_offset = s->vbe_line_offset;
946 start_addr = s->vbe_start_addr;
950 /* compute line_offset in bytes */
951 line_offset = s->cr[0x13];
955 v = (s->cr[0x51] >> 4) & 3; /* S3 extension */
957 v = (s->cr[0x43] >> 2) & 1; /* S3 extension */
958 line_offset |= (v << 8);
963 /* starting address */
964 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
966 start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */
969 *pline_offset = line_offset;
970 *pstart_addr = start_addr;
973 /* update start_addr and line_offset. Return TRUE if modified */
974 static int update_basic_params(VGAState *s)
977 uint32_t start_addr, line_offset, line_compare;
981 s->get_offsets(s, &line_offset, &start_addr);
983 line_compare = s->cr[0x18] |
984 ((s->cr[0x07] & 0x10) << 4) |
985 ((s->cr[0x09] & 0x40) << 3);
987 if (line_offset != s->line_offset ||
988 start_addr != s->start_addr ||
989 line_compare != s->line_compare) {
990 s->line_offset = line_offset;
991 s->start_addr = start_addr;
992 s->line_compare = line_compare;
998 static inline int get_depth_index(int depth)
1013 static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = {
1020 static vga_draw_glyph8_func *vga_draw_glyph16_table[4] = {
1022 vga_draw_glyph16_16,
1023 vga_draw_glyph16_16,
1024 vga_draw_glyph16_32,
1027 static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = {
1034 static const uint8_t cursor_glyph[32 * 4] = {
1035 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1036 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1037 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1038 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1039 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1040 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1041 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1042 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1043 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1044 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1045 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1046 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1047 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1048 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1049 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1050 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1061 static void vga_draw_text(VGAState *s, int full_update)
1063 int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
1064 int cx_min, cx_max, linesize, x_incr;
1065 uint32_t offset, fgcol, bgcol, v, cursor_offset;
1066 uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr;
1067 const uint8_t *font_ptr, *font_base[2];
1068 int dup9, line_offset, depth_index;
1070 uint32_t *ch_attr_ptr;
1071 vga_draw_glyph8_func *vga_draw_glyph8;
1072 vga_draw_glyph9_func *vga_draw_glyph9;
1074 full_update |= update_palette16(s);
1075 palette = s->last_palette;
1077 /* compute font data address (in plane 2) */
1079 offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2;
1080 if (offset != s->font_offsets[0]) {
1081 s->font_offsets[0] = offset;
1084 font_base[0] = s->vram_ptr + offset;
1086 offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2;
1087 font_base[1] = s->vram_ptr + offset;
1088 if (offset != s->font_offsets[1]) {
1089 s->font_offsets[1] = offset;
1093 full_update |= update_basic_params(s);
1095 line_offset = s->line_offset;
1096 s1 = s->vram_ptr + (s->start_addr * 4);
1098 /* total width & height */
1099 cheight = (s->cr[9] & 0x1f) + 1;
1101 if (!(s->sr[1] & 0x01))
1103 if (s->sr[1] & 0x08)
1104 cw = 16; /* NOTE: no 18 pixel wide */
1105 x_incr = cw * ((s->ds->depth + 7) >> 3);
1106 width = (s->cr[0x01] + 1);
1107 if (s->cr[0x06] == 100) {
1108 /* ugly hack for CGA 160x100x16 - explain me the logic */
1111 height = s->cr[0x12] |
1112 ((s->cr[0x07] & 0x02) << 7) |
1113 ((s->cr[0x07] & 0x40) << 3);
1114 height = (height + 1) / cheight;
1116 if ((height * width) > CH_ATTR_SIZE) {
1117 /* better than nothing: exit if transient size is too big */
1121 if (width != s->last_width || height != s->last_height ||
1122 cw != s->last_cw || cheight != s->last_ch) {
1123 s->last_scr_width = width * cw;
1124 s->last_scr_height = height * cheight;
1125 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
1126 s->last_width = width;
1127 s->last_height = height;
1128 s->last_ch = cheight;
1132 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1133 if (cursor_offset != s->cursor_offset ||
1134 s->cr[0xa] != s->cursor_start ||
1135 s->cr[0xb] != s->cursor_end) {
1136 /* if the cursor position changed, we update the old and new
1138 if (s->cursor_offset < CH_ATTR_SIZE)
1139 s->last_ch_attr[s->cursor_offset] = -1;
1140 if (cursor_offset < CH_ATTR_SIZE)
1141 s->last_ch_attr[cursor_offset] = -1;
1142 s->cursor_offset = cursor_offset;
1143 s->cursor_start = s->cr[0xa];
1144 s->cursor_end = s->cr[0xb];
1146 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1148 depth_index = get_depth_index(s->ds->depth);
1150 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1152 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1153 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1156 linesize = s->ds->linesize;
1157 ch_attr_ptr = s->last_ch_attr;
1158 for(cy = 0; cy < height; cy++) {
1163 for(cx = 0; cx < width; cx++) {
1164 ch_attr = *(uint16_t *)src;
1165 if (full_update || ch_attr != *ch_attr_ptr) {
1170 *ch_attr_ptr = ch_attr;
1171 #ifdef WORDS_BIGENDIAN
1173 cattr = ch_attr & 0xff;
1175 ch = ch_attr & 0xff;
1176 cattr = ch_attr >> 8;
1178 font_ptr = font_base[(cattr >> 3) & 1];
1179 font_ptr += 32 * 4 * ch;
1180 bgcol = palette[cattr >> 4];
1181 fgcol = palette[cattr & 0x0f];
1183 vga_draw_glyph8(d1, linesize,
1184 font_ptr, cheight, fgcol, bgcol);
1187 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1189 vga_draw_glyph9(d1, linesize,
1190 font_ptr, cheight, fgcol, bgcol, dup9);
1192 if (src == cursor_ptr &&
1193 !(s->cr[0x0a] & 0x20)) {
1194 int line_start, line_last, h;
1195 /* draw the cursor */
1196 line_start = s->cr[0x0a] & 0x1f;
1197 line_last = s->cr[0x0b] & 0x1f;
1198 /* XXX: check that */
1199 if (line_last > cheight - 1)
1200 line_last = cheight - 1;
1201 if (line_last >= line_start && line_start < cheight) {
1202 h = line_last - line_start + 1;
1203 d = d1 + linesize * line_start;
1205 vga_draw_glyph8(d, linesize,
1206 cursor_glyph, h, fgcol, bgcol);
1208 vga_draw_glyph9(d, linesize,
1209 cursor_glyph, h, fgcol, bgcol, 1);
1219 dpy_update(s->ds, cx_min * cw, cy * cheight,
1220 (cx_max - cx_min + 1) * cw, cheight);
1222 dest += linesize * cheight;
1241 static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = {
1248 vga_draw_line2d2_16,
1249 vga_draw_line2d2_16,
1250 vga_draw_line2d2_32,
1258 vga_draw_line4d2_16,
1259 vga_draw_line4d2_16,
1260 vga_draw_line4d2_32,
1263 vga_draw_line8d2_16,
1264 vga_draw_line8d2_16,
1265 vga_draw_line8d2_32,
1293 static int vga_get_bpp(VGAState *s)
1296 #ifdef CONFIG_BOCHS_VBE
1297 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1298 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1307 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1311 width = (s->cr[0x01] + 1) * 8;
1312 height = s->cr[0x12] |
1313 ((s->cr[0x07] & 0x02) << 7) |
1314 ((s->cr[0x07] & 0x40) << 3);
1315 height = (height + 1);
1320 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1323 if (y1 >= VGA_MAX_HEIGHT)
1325 if (y2 >= VGA_MAX_HEIGHT)
1326 y2 = VGA_MAX_HEIGHT;
1327 for(y = y1; y < y2; y++) {
1328 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1335 static void vga_draw_graphic(VGAState *s, int full_update)
1337 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1338 int width, height, shift_control, line_offset, page0, page1, bwidth;
1339 int disp_width, multi_scan, multi_run;
1341 uint32_t v, addr1, addr;
1342 vga_draw_line_func *vga_draw_line;
1344 full_update |= update_basic_params(s);
1346 s->get_resolution(s, &width, &height);
1349 shift_control = (s->gr[0x05] >> 5) & 3;
1350 double_scan = (s->cr[0x09] & 0x80);
1351 if (shift_control > 1) {
1352 multi_scan = (s->cr[0x09] & 0x1f);
1356 multi_run = multi_scan;
1357 if (shift_control != s->shift_control ||
1358 double_scan != s->double_scan) {
1360 s->shift_control = shift_control;
1361 s->double_scan = double_scan;
1364 if (shift_control == 0) {
1365 full_update |= update_palette16(s);
1366 if (s->sr[0x01] & 8) {
1367 v = VGA_DRAW_LINE4D2;
1372 } else if (shift_control == 1) {
1373 full_update |= update_palette16(s);
1374 if (s->sr[0x01] & 8) {
1375 v = VGA_DRAW_LINE2D2;
1381 switch(s->get_bpp(s)) {
1384 full_update |= update_palette256(s);
1385 v = VGA_DRAW_LINE8D2;
1388 full_update |= update_palette256(s);
1392 v = VGA_DRAW_LINE15;
1395 v = VGA_DRAW_LINE16;
1398 v = VGA_DRAW_LINE24;
1401 v = VGA_DRAW_LINE32;
1405 vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)];
1407 if (disp_width != s->last_width ||
1408 height != s->last_height) {
1409 dpy_resize(s->ds, disp_width, height);
1410 s->last_scr_width = disp_width;
1411 s->last_scr_height = height;
1412 s->last_width = disp_width;
1413 s->last_height = height;
1416 if (s->cursor_invalidate)
1417 s->cursor_invalidate(s);
1419 line_offset = s->line_offset;
1421 printf("w=%d h=%d v=%d line_offset=%d double_scan=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=%02x\n",
1422 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1424 addr1 = (s->start_addr * 4);
1427 page_min = 0x7fffffff;
1430 linesize = s->ds->linesize;
1432 for(y = 0; y < height; y++) {
1434 if (!(s->cr[0x17] & 1)) {
1436 /* CGA compatibility handling */
1437 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1438 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1440 if (!(s->cr[0x17] & 2)) {
1441 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1443 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1444 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1445 update = full_update | cpu_physical_memory_is_dirty(page0) |
1446 cpu_physical_memory_is_dirty(page1);
1447 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1448 /* if wide line, can use another page */
1449 update |= cpu_physical_memory_is_dirty(page0 + TARGET_PAGE_SIZE);
1451 /* explicit invalidation for the hardware cursor */
1452 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1456 if (page0 < page_min)
1458 if (page1 > page_max)
1460 vga_draw_line(s, d, s->vram_ptr + addr, width);
1461 if (s->cursor_draw_line)
1462 s->cursor_draw_line(s, d, y);
1465 /* flush to display */
1466 dpy_update(s->ds, 0, y_start,
1467 disp_width, y - y_start);
1472 if (!double_scan || (y & 1) != 0) {
1473 if (y1 == s->line_compare) {
1476 mask = (s->cr[0x17] & 3) ^ 3;
1477 if ((y1 & mask) == mask)
1478 addr1 += line_offset;
1482 multi_run = multi_scan;
1490 /* flush to display */
1491 dpy_update(s->ds, 0, y_start,
1492 disp_width, y - y_start);
1494 /* reset modified pages */
1495 if (page_max != -1) {
1496 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE);
1498 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1501 static void vga_draw_blank(VGAState *s, int full_update)
1508 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1510 if (s->ds->depth == 8)
1511 val = s->rgb_to_pixel(0, 0, 0);
1514 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1516 for(i = 0; i < s->last_scr_height; i++) {
1518 d += s->ds->linesize;
1520 dpy_update(s->ds, 0, 0,
1521 s->last_scr_width, s->last_scr_height);
1524 #define GMODE_TEXT 0
1525 #define GMODE_GRAPH 1
1526 #define GMODE_BLANK 2
1528 void vga_update_display(void)
1530 VGAState *s = vga_state;
1531 int full_update, graphic_mode;
1533 if (s->ds->depth == 0) {
1536 switch(s->ds->depth) {
1538 s->rgb_to_pixel = rgb_to_pixel8_dup;
1541 s->rgb_to_pixel = rgb_to_pixel15_dup;
1545 s->rgb_to_pixel = rgb_to_pixel16_dup;
1548 s->rgb_to_pixel = rgb_to_pixel32_dup;
1553 if (!(s->ar_index & 0x20)) {
1554 graphic_mode = GMODE_BLANK;
1556 graphic_mode = s->gr[6] & 1;
1558 if (graphic_mode != s->graphic_mode) {
1559 s->graphic_mode = graphic_mode;
1562 switch(graphic_mode) {
1564 vga_draw_text(s, full_update);
1567 vga_draw_graphic(s, full_update);
1571 vga_draw_blank(s, full_update);
1577 /* force a full display refresh */
1578 void vga_invalidate_display(void)
1580 VGAState *s = vga_state;
1583 s->last_height = -1;
1586 static void vga_reset(VGAState *s)
1588 memset(s, 0, sizeof(VGAState));
1590 /* chip ID for 8c968 */
1593 s->cr[0x2f] = 0x01; /* XXX: check revision code */
1596 s->graphic_mode = -1; /* force full update */
1599 static CPUReadMemoryFunc *vga_mem_read[3] = {
1605 static CPUWriteMemoryFunc *vga_mem_write[3] = {
1611 static void vga_save(QEMUFile *f, void *opaque)
1613 VGAState *s = opaque;
1616 qemu_put_be32s(f, &s->latch);
1617 qemu_put_8s(f, &s->sr_index);
1618 qemu_put_buffer(f, s->sr, 8);
1619 qemu_put_8s(f, &s->gr_index);
1620 qemu_put_buffer(f, s->gr, 16);
1621 qemu_put_8s(f, &s->ar_index);
1622 qemu_put_buffer(f, s->ar, 21);
1623 qemu_put_be32s(f, &s->ar_flip_flop);
1624 qemu_put_8s(f, &s->cr_index);
1625 qemu_put_buffer(f, s->cr, 256);
1626 qemu_put_8s(f, &s->msr);
1627 qemu_put_8s(f, &s->fcr);
1628 qemu_put_8s(f, &s->st00);
1629 qemu_put_8s(f, &s->st01);
1631 qemu_put_8s(f, &s->dac_state);
1632 qemu_put_8s(f, &s->dac_sub_index);
1633 qemu_put_8s(f, &s->dac_read_index);
1634 qemu_put_8s(f, &s->dac_write_index);
1635 qemu_put_buffer(f, s->dac_cache, 3);
1636 qemu_put_buffer(f, s->palette, 768);
1638 qemu_put_be32s(f, &s->bank_offset);
1639 #ifdef CONFIG_BOCHS_VBE
1640 qemu_put_byte(f, 1);
1641 qemu_put_be16s(f, &s->vbe_index);
1642 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1643 qemu_put_be16s(f, &s->vbe_regs[i]);
1644 qemu_put_be32s(f, &s->vbe_start_addr);
1645 qemu_put_be32s(f, &s->vbe_line_offset);
1646 qemu_put_be32s(f, &s->vbe_bank_mask);
1648 qemu_put_byte(f, 0);
1652 static int vga_load(QEMUFile *f, void *opaque, int version_id)
1654 VGAState *s = opaque;
1657 if (version_id != 1)
1660 qemu_get_be32s(f, &s->latch);
1661 qemu_get_8s(f, &s->sr_index);
1662 qemu_get_buffer(f, s->sr, 8);
1663 qemu_get_8s(f, &s->gr_index);
1664 qemu_get_buffer(f, s->gr, 16);
1665 qemu_get_8s(f, &s->ar_index);
1666 qemu_get_buffer(f, s->ar, 21);
1667 qemu_get_be32s(f, &s->ar_flip_flop);
1668 qemu_get_8s(f, &s->cr_index);
1669 qemu_get_buffer(f, s->cr, 256);
1670 qemu_get_8s(f, &s->msr);
1671 qemu_get_8s(f, &s->fcr);
1672 qemu_get_8s(f, &s->st00);
1673 qemu_get_8s(f, &s->st01);
1675 qemu_get_8s(f, &s->dac_state);
1676 qemu_get_8s(f, &s->dac_sub_index);
1677 qemu_get_8s(f, &s->dac_read_index);
1678 qemu_get_8s(f, &s->dac_write_index);
1679 qemu_get_buffer(f, s->dac_cache, 3);
1680 qemu_get_buffer(f, s->palette, 768);
1682 qemu_get_be32s(f, &s->bank_offset);
1683 is_vbe = qemu_get_byte(f);
1684 #ifdef CONFIG_BOCHS_VBE
1687 qemu_get_be16s(f, &s->vbe_index);
1688 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1689 qemu_get_be16s(f, &s->vbe_regs[i]);
1690 qemu_get_be32s(f, &s->vbe_start_addr);
1691 qemu_get_be32s(f, &s->vbe_line_offset);
1692 qemu_get_be32s(f, &s->vbe_bank_mask);
1699 s->graphic_mode = -1;
1703 static void vga_map(PCIDevice *pci_dev, int region_num,
1704 uint32_t addr, uint32_t size, int type)
1706 VGAState *s = vga_state;
1708 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1711 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1712 unsigned long vga_ram_offset, int vga_ram_size)
1716 for(i = 0;i < 256; i++) {
1718 for(j = 0; j < 8; j++) {
1719 v |= ((i >> j) & 1) << (j * 4);
1724 for(j = 0; j < 4; j++) {
1725 v |= ((i >> (2 * j)) & 3) << (j * 4);
1729 for(i = 0; i < 16; i++) {
1731 for(j = 0; j < 4; j++) {
1734 v |= b << (2 * j + 1);
1741 s->vram_ptr = vga_ram_base;
1742 s->vram_offset = vga_ram_offset;
1743 s->vram_size = vga_ram_size;
1745 s->get_bpp = vga_get_bpp;
1746 s->get_offsets = vga_get_offsets;
1747 s->get_resolution = vga_get_resolution;
1748 /* XXX: currently needed for display */
1753 int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
1754 unsigned long vga_ram_offset, int vga_ram_size)
1758 s = qemu_mallocz(sizeof(VGAState));
1762 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1764 register_savevm("vga", 0, 1, vga_save, vga_load, s);
1766 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
1768 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1769 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1770 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1771 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
1773 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
1775 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1776 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1777 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1778 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
1781 #ifdef CONFIG_BOCHS_VBE
1782 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1783 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
1784 #if defined (TARGET_I386)
1785 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1786 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
1788 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1789 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
1791 /* old Bochs IO ports */
1792 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1793 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
1795 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1796 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1798 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1799 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1801 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1802 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
1804 #endif /* CONFIG_BOCHS_VBE */
1806 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
1807 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1814 d = pci_register_device(bus, "VGA",
1817 pci_conf = d->config;
1818 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1819 pci_conf[0x01] = 0x12;
1820 pci_conf[0x02] = 0x11;
1821 pci_conf[0x03] = 0x11;
1822 pci_conf[0x0a] = 0x00; // VGA controller
1823 pci_conf[0x0b] = 0x03;
1824 pci_conf[0x0e] = 0x00; // header_type
1826 /* XXX: vga_ram_size must be a power of two */
1827 pci_register_io_region(d, 0, vga_ram_size,
1828 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1830 #ifdef CONFIG_BOCHS_VBE
1831 /* XXX: use optimized standard vga accesses */
1832 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1833 vga_ram_size, vga_ram_offset);
1839 /********************************************************/
1840 /* vga screen dump */
1842 static int vga_save_w, vga_save_h;
1844 static void vga_save_dpy_update(DisplayState *s,
1845 int x, int y, int w, int h)
1849 static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1851 s->linesize = w * 4;
1852 s->data = qemu_malloc(h * s->linesize);
1857 static void vga_save_dpy_refresh(DisplayState *s)
1861 static int ppm_save(const char *filename, uint8_t *data,
1862 int w, int h, int linesize)
1869 f = fopen(filename, "wb");
1872 fprintf(f, "P6\n%d %d\n%d\n",
1875 for(y = 0; y < h; y++) {
1877 for(x = 0; x < w; x++) {
1879 fputc((v >> 16) & 0xff, f);
1880 fputc((v >> 8) & 0xff, f);
1881 fputc((v) & 0xff, f);
1890 /* save the vga display in a PPM image even if no display is
1892 void vga_screen_dump(const char *filename)
1894 VGAState *s = vga_state;
1895 DisplayState *saved_ds, ds1, *ds = &ds1;
1897 /* XXX: this is a little hackish */
1898 vga_invalidate_display();
1901 memset(ds, 0, sizeof(DisplayState));
1902 ds->dpy_update = vga_save_dpy_update;
1903 ds->dpy_resize = vga_save_dpy_resize;
1904 ds->dpy_refresh = vga_save_dpy_refresh;
1908 s->graphic_mode = -1;
1909 vga_update_display();
1912 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1914 qemu_free(ds->data);