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 void vga_screen_dump(void *opaque, const char *filename);
151 static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
153 VGAState *s = opaque;
156 /* check port range access depending on color/monochrome mode */
157 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
158 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) {
163 if (s->ar_flip_flop == 0) {
170 index = s->ar_index & 0x1f;
183 val = s->sr[s->sr_index];
185 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
192 val = s->dac_write_index;
195 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
196 if (++s->dac_sub_index == 3) {
197 s->dac_sub_index = 0;
211 val = s->gr[s->gr_index];
213 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
222 val = s->cr[s->cr_index];
224 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
229 /* just toggle to fool polling */
230 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
239 #if defined(DEBUG_VGA)
240 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
245 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
247 VGAState *s = opaque;
250 /* check port range access depending on color/monochrome mode */
251 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) ||
252 (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION)))
256 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
261 if (s->ar_flip_flop == 0) {
265 index = s->ar_index & 0x1f;
268 s->ar[index] = val & 0x3f;
271 s->ar[index] = val & ~0x10;
277 s->ar[index] = val & ~0xc0;
280 s->ar[index] = val & ~0xf0;
283 s->ar[index] = val & ~0xf0;
289 s->ar_flip_flop ^= 1;
292 s->msr = val & ~0x10;
295 s->sr_index = val & 7;
299 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
301 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
304 s->dac_read_index = val;
305 s->dac_sub_index = 0;
309 s->dac_write_index = val;
310 s->dac_sub_index = 0;
314 s->dac_cache[s->dac_sub_index] = val;
315 if (++s->dac_sub_index == 3) {
316 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
317 s->dac_sub_index = 0;
318 s->dac_write_index++;
322 s->gr_index = val & 0x0f;
326 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
328 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
337 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
339 /* handle CR0-7 protection */
340 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
341 /* can always write bit 4 of CR7 */
342 if (s->cr_index == 7)
343 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
346 switch(s->cr_index) {
347 case 0x01: /* horizontal display end */
352 case 0x12: /* veritcal display end */
353 s->cr[s->cr_index] = val;
356 s->cr[s->cr_index] = val;
367 #ifdef CONFIG_BOCHS_VBE
368 static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
370 VGAState *s = opaque;
376 static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
378 VGAState *s = opaque;
381 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
382 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
383 switch(s->vbe_index) {
384 /* XXX: do not hardcode ? */
385 case VBE_DISPI_INDEX_XRES:
386 val = VBE_DISPI_MAX_XRES;
388 case VBE_DISPI_INDEX_YRES:
389 val = VBE_DISPI_MAX_YRES;
391 case VBE_DISPI_INDEX_BPP:
392 val = VBE_DISPI_MAX_BPP;
395 val = s->vbe_regs[s->vbe_index];
399 val = s->vbe_regs[s->vbe_index];
404 #ifdef DEBUG_BOCHS_VBE
405 printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
410 static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
412 VGAState *s = opaque;
416 static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
418 VGAState *s = opaque;
420 if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
421 #ifdef DEBUG_BOCHS_VBE
422 printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
424 switch(s->vbe_index) {
425 case VBE_DISPI_INDEX_ID:
426 if (val == VBE_DISPI_ID0 ||
427 val == VBE_DISPI_ID1 ||
428 val == VBE_DISPI_ID2) {
429 s->vbe_regs[s->vbe_index] = val;
432 case VBE_DISPI_INDEX_XRES:
433 if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) {
434 s->vbe_regs[s->vbe_index] = val;
437 case VBE_DISPI_INDEX_YRES:
438 if (val <= VBE_DISPI_MAX_YRES) {
439 s->vbe_regs[s->vbe_index] = val;
442 case VBE_DISPI_INDEX_BPP:
445 if (val == 4 || val == 8 || val == 15 ||
446 val == 16 || val == 24 || val == 32) {
447 s->vbe_regs[s->vbe_index] = val;
450 case VBE_DISPI_INDEX_BANK:
451 val &= s->vbe_bank_mask;
452 s->vbe_regs[s->vbe_index] = val;
453 s->bank_offset = (val << 16);
455 case VBE_DISPI_INDEX_ENABLE:
456 if ((val & VBE_DISPI_ENABLED) &&
457 !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
458 int h, shift_control;
460 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] =
461 s->vbe_regs[VBE_DISPI_INDEX_XRES];
462 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] =
463 s->vbe_regs[VBE_DISPI_INDEX_YRES];
464 s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
465 s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
467 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
468 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
470 s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] *
471 ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
472 s->vbe_start_addr = 0;
474 /* clear the screen (should be done in BIOS) */
475 if (!(val & VBE_DISPI_NOCLEARMEM)) {
476 memset(s->vram_ptr, 0,
477 s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset);
480 /* we initialize the VGA graphic mode (should be done
482 s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */
483 s->cr[0x17] |= 3; /* no CGA modes */
484 s->cr[0x13] = s->vbe_line_offset >> 3;
486 s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1;
487 /* height (only meaningful if < 1024) */
488 h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
490 s->cr[0x07] = (s->cr[0x07] & ~0x42) |
491 ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
492 /* line compare to 1023 */
497 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
499 s->sr[0x01] &= ~8; /* no double line */
502 s->sr[4] |= 0x08; /* set chain 4 mode */
503 s->sr[2] |= 0x0f; /* activate all planes */
505 s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5);
506 s->cr[0x09] &= ~0x9f; /* no double scan */
508 /* XXX: the bios should do that */
511 s->vbe_regs[s->vbe_index] = val;
513 case VBE_DISPI_INDEX_VIRT_WIDTH:
515 int w, h, line_offset;
517 if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
520 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
521 line_offset = w >> 1;
523 line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
524 h = s->vram_size / line_offset;
525 /* XXX: support weird bochs semantics ? */
526 if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
528 s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w;
529 s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h;
530 s->vbe_line_offset = line_offset;
533 case VBE_DISPI_INDEX_X_OFFSET:
534 case VBE_DISPI_INDEX_Y_OFFSET:
537 s->vbe_regs[s->vbe_index] = val;
538 s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET];
539 x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET];
540 if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4)
541 s->vbe_start_addr += x >> 1;
543 s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3);
544 s->vbe_start_addr >>= 2;
554 /* called for accesses between 0xa0000 and 0xc0000 */
555 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
557 VGAState *s = opaque;
558 int memory_map_mode, plane;
561 /* convert to VGA memory offset */
562 memory_map_mode = (s->gr[6] >> 2) & 3;
564 switch(memory_map_mode) {
570 addr += s->bank_offset;
585 if (s->sr[4] & 0x08) {
586 /* chain 4 mode : simplest access */
587 ret = s->vram_ptr[addr];
588 } else if (s->gr[5] & 0x10) {
589 /* odd/even mode (aka text mode mapping) */
590 plane = (s->gr[4] & 2) | (addr & 1);
591 ret = s->vram_ptr[((addr & ~1) << 1) | plane];
593 /* standard VGA latched access */
594 s->latch = ((uint32_t *)s->vram_ptr)[addr];
596 if (!(s->gr[5] & 0x08)) {
599 ret = GET_PLANE(s->latch, plane);
602 ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]];
611 static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr)
614 #ifdef TARGET_WORDS_BIGENDIAN
615 v = vga_mem_readb(opaque, addr) << 8;
616 v |= vga_mem_readb(opaque, addr + 1);
618 v = vga_mem_readb(opaque, addr);
619 v |= vga_mem_readb(opaque, addr + 1) << 8;
624 static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr)
627 #ifdef TARGET_WORDS_BIGENDIAN
628 v = vga_mem_readb(opaque, addr) << 24;
629 v |= vga_mem_readb(opaque, addr + 1) << 16;
630 v |= vga_mem_readb(opaque, addr + 2) << 8;
631 v |= vga_mem_readb(opaque, addr + 3);
633 v = vga_mem_readb(opaque, addr);
634 v |= vga_mem_readb(opaque, addr + 1) << 8;
635 v |= vga_mem_readb(opaque, addr + 2) << 16;
636 v |= vga_mem_readb(opaque, addr + 3) << 24;
641 /* called for accesses between 0xa0000 and 0xc0000 */
642 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
644 VGAState *s = opaque;
645 int memory_map_mode, plane, write_mode, b, func_select, mask;
646 uint32_t write_mask, bit_mask, set_mask;
649 printf("vga: [0x%x] = 0x%02x\n", addr, val);
651 /* convert to VGA memory offset */
652 memory_map_mode = (s->gr[6] >> 2) & 3;
654 switch(memory_map_mode) {
660 addr += s->bank_offset;
675 if (s->sr[4] & 0x08) {
676 /* chain 4 mode : simplest access */
679 if (s->sr[2] & mask) {
680 s->vram_ptr[addr] = val;
682 printf("vga: chain4: [0x%x]\n", addr);
684 s->plane_updated |= mask; /* only used to detect font change */
685 cpu_physical_memory_set_dirty(s->vram_offset + addr);
687 } else if (s->gr[5] & 0x10) {
688 /* odd/even mode (aka text mode mapping) */
689 plane = (s->gr[4] & 2) | (addr & 1);
691 if (s->sr[2] & mask) {
692 addr = ((addr & ~1) << 1) | plane;
693 s->vram_ptr[addr] = val;
695 printf("vga: odd/even: [0x%x]\n", addr);
697 s->plane_updated |= mask; /* only used to detect font change */
698 cpu_physical_memory_set_dirty(s->vram_offset + addr);
701 /* standard VGA latched access */
702 write_mode = s->gr[5] & 3;
708 val = ((val >> b) | (val << (8 - b))) & 0xff;
712 /* apply set/reset mask */
713 set_mask = mask16[s->gr[1]];
714 val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
721 val = mask16[val & 0x0f];
727 val = (val >> b) | (val << (8 - b));
729 bit_mask = s->gr[8] & val;
730 val = mask16[s->gr[0]];
734 /* apply logical operation */
735 func_select = s->gr[3] >> 3;
736 switch(func_select) {
756 bit_mask |= bit_mask << 8;
757 bit_mask |= bit_mask << 16;
758 val = (val & bit_mask) | (s->latch & ~bit_mask);
761 /* mask data according to sr[2] */
763 s->plane_updated |= mask; /* only used to detect font change */
764 write_mask = mask16[mask];
765 ((uint32_t *)s->vram_ptr)[addr] =
766 (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) |
769 printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
770 addr * 4, write_mask, val);
772 cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
776 static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
778 #ifdef TARGET_WORDS_BIGENDIAN
779 vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
780 vga_mem_writeb(opaque, addr + 1, val & 0xff);
782 vga_mem_writeb(opaque, addr, val & 0xff);
783 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
787 static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
789 #ifdef TARGET_WORDS_BIGENDIAN
790 vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
791 vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
792 vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
793 vga_mem_writeb(opaque, addr + 3, val & 0xff);
795 vga_mem_writeb(opaque, addr, val & 0xff);
796 vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
797 vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
798 vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
802 typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
803 const uint8_t *font_ptr, int h,
804 uint32_t fgcol, uint32_t bgcol);
805 typedef void vga_draw_glyph9_func(uint8_t *d, int linesize,
806 const uint8_t *font_ptr, int h,
807 uint32_t fgcol, uint32_t bgcol, int dup9);
808 typedef void vga_draw_line_func(VGAState *s1, uint8_t *d,
809 const uint8_t *s, int width);
811 static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
813 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
816 static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
818 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
821 static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
823 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
826 static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
828 return (r << 16) | (g << 8) | b;
831 static inline unsigned int rgb_to_pixel32bgr(unsigned int r, unsigned int g, unsigned b)
833 return (b << 16) | (g << 8) | r;
837 #include "vga_template.h"
840 #include "vga_template.h"
843 #include "vga_template.h"
846 #include "vga_template.h"
850 #include "vga_template.h"
852 static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b)
855 col = rgb_to_pixel8(r, g, b);
861 static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b)
864 col = rgb_to_pixel15(r, g, b);
869 static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b)
872 col = rgb_to_pixel16(r, g, b);
877 static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b)
880 col = rgb_to_pixel32(r, g, b);
884 static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b)
887 col = rgb_to_pixel32bgr(r, g, b);
891 /* return true if the palette was modified */
892 static int update_palette16(VGAState *s)
895 uint32_t v, col, *palette;
898 palette = s->last_palette;
899 for(i = 0; i < 16; i++) {
901 if (s->ar[0x10] & 0x80)
902 v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf);
904 v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f);
906 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
907 c6_to_8(s->palette[v + 1]),
908 c6_to_8(s->palette[v + 2]));
909 if (col != palette[i]) {
917 /* return true if the palette was modified */
918 static int update_palette256(VGAState *s)
921 uint32_t v, col, *palette;
924 palette = s->last_palette;
926 for(i = 0; i < 256; i++) {
927 col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
928 c6_to_8(s->palette[v + 1]),
929 c6_to_8(s->palette[v + 2]));
930 if (col != palette[i]) {
939 static void vga_get_offsets(VGAState *s,
940 uint32_t *pline_offset,
941 uint32_t *pstart_addr)
943 uint32_t start_addr, line_offset;
944 #ifdef CONFIG_BOCHS_VBE
945 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
946 line_offset = s->vbe_line_offset;
947 start_addr = s->vbe_start_addr;
951 /* compute line_offset in bytes */
952 line_offset = s->cr[0x13];
955 /* starting address */
956 start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
958 *pline_offset = line_offset;
959 *pstart_addr = start_addr;
962 /* update start_addr and line_offset. Return TRUE if modified */
963 static int update_basic_params(VGAState *s)
966 uint32_t start_addr, line_offset, line_compare;
970 s->get_offsets(s, &line_offset, &start_addr);
972 line_compare = s->cr[0x18] |
973 ((s->cr[0x07] & 0x10) << 4) |
974 ((s->cr[0x09] & 0x40) << 3);
976 if (line_offset != s->line_offset ||
977 start_addr != s->start_addr ||
978 line_compare != s->line_compare) {
979 s->line_offset = line_offset;
980 s->start_addr = start_addr;
981 s->line_compare = line_compare;
989 static inline int get_depth_index(DisplayState *s)
1007 static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
1015 static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
1017 vga_draw_glyph16_16,
1018 vga_draw_glyph16_16,
1019 vga_draw_glyph16_32,
1020 vga_draw_glyph16_32,
1023 static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
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;
1089 if (s->plane_updated & (1 << 2)) {
1090 /* if the plane 2 was modified since the last display, it
1091 indicates the font may have been modified */
1092 s->plane_updated = 0;
1095 full_update |= update_basic_params(s);
1097 line_offset = s->line_offset;
1098 s1 = s->vram_ptr + (s->start_addr * 4);
1100 /* total width & height */
1101 cheight = (s->cr[9] & 0x1f) + 1;
1103 if (!(s->sr[1] & 0x01))
1105 if (s->sr[1] & 0x08)
1106 cw = 16; /* NOTE: no 18 pixel wide */
1107 x_incr = cw * ((s->ds->depth + 7) >> 3);
1108 width = (s->cr[0x01] + 1);
1109 if (s->cr[0x06] == 100) {
1110 /* ugly hack for CGA 160x100x16 - explain me the logic */
1113 height = s->cr[0x12] |
1114 ((s->cr[0x07] & 0x02) << 7) |
1115 ((s->cr[0x07] & 0x40) << 3);
1116 height = (height + 1) / cheight;
1118 if ((height * width) > CH_ATTR_SIZE) {
1119 /* better than nothing: exit if transient size is too big */
1123 if (width != s->last_width || height != s->last_height ||
1124 cw != s->last_cw || cheight != s->last_ch) {
1125 s->last_scr_width = width * cw;
1126 s->last_scr_height = height * cheight;
1127 dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
1128 s->last_width = width;
1129 s->last_height = height;
1130 s->last_ch = cheight;
1134 cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr;
1135 if (cursor_offset != s->cursor_offset ||
1136 s->cr[0xa] != s->cursor_start ||
1137 s->cr[0xb] != s->cursor_end) {
1138 /* if the cursor position changed, we update the old and new
1140 if (s->cursor_offset < CH_ATTR_SIZE)
1141 s->last_ch_attr[s->cursor_offset] = -1;
1142 if (cursor_offset < CH_ATTR_SIZE)
1143 s->last_ch_attr[cursor_offset] = -1;
1144 s->cursor_offset = cursor_offset;
1145 s->cursor_start = s->cr[0xa];
1146 s->cursor_end = s->cr[0xb];
1148 cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
1150 depth_index = get_depth_index(s->ds);
1152 vga_draw_glyph8 = vga_draw_glyph16_table[depth_index];
1154 vga_draw_glyph8 = vga_draw_glyph8_table[depth_index];
1155 vga_draw_glyph9 = vga_draw_glyph9_table[depth_index];
1158 linesize = s->ds->linesize;
1159 ch_attr_ptr = s->last_ch_attr;
1160 for(cy = 0; cy < height; cy++) {
1165 for(cx = 0; cx < width; cx++) {
1166 ch_attr = *(uint16_t *)src;
1167 if (full_update || ch_attr != *ch_attr_ptr) {
1172 *ch_attr_ptr = ch_attr;
1173 #ifdef WORDS_BIGENDIAN
1175 cattr = ch_attr & 0xff;
1177 ch = ch_attr & 0xff;
1178 cattr = ch_attr >> 8;
1180 font_ptr = font_base[(cattr >> 3) & 1];
1181 font_ptr += 32 * 4 * ch;
1182 bgcol = palette[cattr >> 4];
1183 fgcol = palette[cattr & 0x0f];
1185 vga_draw_glyph8(d1, linesize,
1186 font_ptr, cheight, fgcol, bgcol);
1189 if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04))
1191 vga_draw_glyph9(d1, linesize,
1192 font_ptr, cheight, fgcol, bgcol, dup9);
1194 if (src == cursor_ptr &&
1195 !(s->cr[0x0a] & 0x20)) {
1196 int line_start, line_last, h;
1197 /* draw the cursor */
1198 line_start = s->cr[0x0a] & 0x1f;
1199 line_last = s->cr[0x0b] & 0x1f;
1200 /* XXX: check that */
1201 if (line_last > cheight - 1)
1202 line_last = cheight - 1;
1203 if (line_last >= line_start && line_start < cheight) {
1204 h = line_last - line_start + 1;
1205 d = d1 + linesize * line_start;
1207 vga_draw_glyph8(d, linesize,
1208 cursor_glyph, h, fgcol, bgcol);
1210 vga_draw_glyph9(d, linesize,
1211 cursor_glyph, h, fgcol, bgcol, 1);
1221 dpy_update(s->ds, cx_min * cw, cy * cheight,
1222 (cx_max - cx_min + 1) * cw, cheight);
1224 dest += linesize * cheight;
1243 static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
1251 vga_draw_line2d2_16,
1252 vga_draw_line2d2_16,
1253 vga_draw_line2d2_32,
1254 vga_draw_line2d2_32,
1263 vga_draw_line4d2_16,
1264 vga_draw_line4d2_16,
1265 vga_draw_line4d2_32,
1266 vga_draw_line4d2_32,
1269 vga_draw_line8d2_16,
1270 vga_draw_line8d2_16,
1271 vga_draw_line8d2_32,
1272 vga_draw_line8d2_32,
1284 vga_draw_line15_32bgr,
1290 vga_draw_line16_32bgr,
1296 vga_draw_line24_32bgr,
1302 vga_draw_line32_32bgr,
1305 typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b);
1307 static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
1312 rgb_to_pixel32bgr_dup,
1315 static int vga_get_bpp(VGAState *s)
1318 #ifdef CONFIG_BOCHS_VBE
1319 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1320 ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
1329 static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight)
1333 #ifdef CONFIG_BOCHS_VBE
1334 if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
1335 width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
1336 height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
1340 width = (s->cr[0x01] + 1) * 8;
1341 height = s->cr[0x12] |
1342 ((s->cr[0x07] & 0x02) << 7) |
1343 ((s->cr[0x07] & 0x40) << 3);
1344 height = (height + 1);
1350 void vga_invalidate_scanlines(VGAState *s, int y1, int y2)
1353 if (y1 >= VGA_MAX_HEIGHT)
1355 if (y2 >= VGA_MAX_HEIGHT)
1356 y2 = VGA_MAX_HEIGHT;
1357 for(y = y1; y < y2; y++) {
1358 s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f);
1365 static void vga_draw_graphic(VGAState *s, int full_update)
1367 int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
1368 int width, height, shift_control, line_offset, page0, page1, bwidth;
1369 int disp_width, multi_scan, multi_run;
1371 uint32_t v, addr1, addr;
1372 vga_draw_line_func *vga_draw_line;
1374 full_update |= update_basic_params(s);
1376 s->get_resolution(s, &width, &height);
1379 shift_control = (s->gr[0x05] >> 5) & 3;
1380 double_scan = (s->cr[0x09] >> 7);
1381 if (shift_control != 1) {
1382 multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1;
1384 /* in CGA modes, multi_scan is ignored */
1385 /* XXX: is it correct ? */
1386 multi_scan = double_scan;
1388 multi_run = multi_scan;
1389 if (shift_control != s->shift_control ||
1390 double_scan != s->double_scan) {
1392 s->shift_control = shift_control;
1393 s->double_scan = double_scan;
1396 if (shift_control == 0) {
1397 full_update |= update_palette16(s);
1398 if (s->sr[0x01] & 8) {
1399 v = VGA_DRAW_LINE4D2;
1404 } else if (shift_control == 1) {
1405 full_update |= update_palette16(s);
1406 if (s->sr[0x01] & 8) {
1407 v = VGA_DRAW_LINE2D2;
1413 switch(s->get_bpp(s)) {
1416 full_update |= update_palette256(s);
1417 v = VGA_DRAW_LINE8D2;
1420 full_update |= update_palette256(s);
1424 v = VGA_DRAW_LINE15;
1427 v = VGA_DRAW_LINE16;
1430 v = VGA_DRAW_LINE24;
1433 v = VGA_DRAW_LINE32;
1437 vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
1439 if (disp_width != s->last_width ||
1440 height != s->last_height) {
1441 dpy_resize(s->ds, disp_width, height);
1442 s->last_scr_width = disp_width;
1443 s->last_scr_height = height;
1444 s->last_width = disp_width;
1445 s->last_height = height;
1448 if (s->cursor_invalidate)
1449 s->cursor_invalidate(s);
1451 line_offset = s->line_offset;
1453 printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
1454 width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
1456 addr1 = (s->start_addr * 4);
1459 page_min = 0x7fffffff;
1462 linesize = s->ds->linesize;
1464 for(y = 0; y < height; y++) {
1466 if (!(s->cr[0x17] & 1)) {
1468 /* CGA compatibility handling */
1469 shift = 14 + ((s->cr[0x17] >> 6) & 1);
1470 addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
1472 if (!(s->cr[0x17] & 2)) {
1473 addr = (addr & ~0x8000) | ((y1 & 2) << 14);
1475 page0 = s->vram_offset + (addr & TARGET_PAGE_MASK);
1476 page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
1477 update = full_update |
1478 cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) |
1479 cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG);
1480 if ((page1 - page0) > TARGET_PAGE_SIZE) {
1481 /* if wide line, can use another page */
1482 update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE,
1485 /* explicit invalidation for the hardware cursor */
1486 update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
1490 if (page0 < page_min)
1492 if (page1 > page_max)
1494 vga_draw_line(s, d, s->vram_ptr + addr, width);
1495 if (s->cursor_draw_line)
1496 s->cursor_draw_line(s, d, y);
1499 /* flush to display */
1500 dpy_update(s->ds, 0, y_start,
1501 disp_width, y - y_start);
1506 mask = (s->cr[0x17] & 3) ^ 3;
1507 if ((y1 & mask) == mask)
1508 addr1 += line_offset;
1510 multi_run = multi_scan;
1514 /* line compare acts on the displayed lines */
1515 if (y == s->line_compare)
1520 /* flush to display */
1521 dpy_update(s->ds, 0, y_start,
1522 disp_width, y - y_start);
1524 /* reset modified pages */
1525 if (page_max != -1) {
1526 cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
1529 memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
1532 static void vga_draw_blank(VGAState *s, int full_update)
1539 if (s->last_scr_width <= 0 || s->last_scr_height <= 0)
1541 if (s->ds->depth == 8)
1542 val = s->rgb_to_pixel(0, 0, 0);
1545 w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
1547 for(i = 0; i < s->last_scr_height; i++) {
1549 d += s->ds->linesize;
1551 dpy_update(s->ds, 0, 0,
1552 s->last_scr_width, s->last_scr_height);
1555 #define GMODE_TEXT 0
1556 #define GMODE_GRAPH 1
1557 #define GMODE_BLANK 2
1559 static void vga_update_display(void *opaque)
1561 VGAState *s = (VGAState *)opaque;
1562 int full_update, graphic_mode;
1564 if (s->ds->depth == 0) {
1568 rgb_to_pixel_dup_table[get_depth_index(s->ds)];
1571 if (!(s->ar_index & 0x20)) {
1572 graphic_mode = GMODE_BLANK;
1574 graphic_mode = s->gr[6] & 1;
1576 if (graphic_mode != s->graphic_mode) {
1577 s->graphic_mode = graphic_mode;
1580 switch(graphic_mode) {
1582 vga_draw_text(s, full_update);
1585 vga_draw_graphic(s, full_update);
1589 vga_draw_blank(s, full_update);
1595 /* force a full display refresh */
1596 static void vga_invalidate_display(void *opaque)
1598 VGAState *s = (VGAState *)opaque;
1601 s->last_height = -1;
1604 static void vga_reset(VGAState *s)
1606 memset(s, 0, sizeof(VGAState));
1607 s->graphic_mode = -1; /* force full update */
1610 static CPUReadMemoryFunc *vga_mem_read[3] = {
1616 static CPUWriteMemoryFunc *vga_mem_write[3] = {
1622 static void vga_save(QEMUFile *f, void *opaque)
1624 VGAState *s = opaque;
1627 qemu_put_be32s(f, &s->latch);
1628 qemu_put_8s(f, &s->sr_index);
1629 qemu_put_buffer(f, s->sr, 8);
1630 qemu_put_8s(f, &s->gr_index);
1631 qemu_put_buffer(f, s->gr, 16);
1632 qemu_put_8s(f, &s->ar_index);
1633 qemu_put_buffer(f, s->ar, 21);
1634 qemu_put_be32s(f, &s->ar_flip_flop);
1635 qemu_put_8s(f, &s->cr_index);
1636 qemu_put_buffer(f, s->cr, 256);
1637 qemu_put_8s(f, &s->msr);
1638 qemu_put_8s(f, &s->fcr);
1639 qemu_put_8s(f, &s->st00);
1640 qemu_put_8s(f, &s->st01);
1642 qemu_put_8s(f, &s->dac_state);
1643 qemu_put_8s(f, &s->dac_sub_index);
1644 qemu_put_8s(f, &s->dac_read_index);
1645 qemu_put_8s(f, &s->dac_write_index);
1646 qemu_put_buffer(f, s->dac_cache, 3);
1647 qemu_put_buffer(f, s->palette, 768);
1649 qemu_put_be32s(f, &s->bank_offset);
1650 #ifdef CONFIG_BOCHS_VBE
1651 qemu_put_byte(f, 1);
1652 qemu_put_be16s(f, &s->vbe_index);
1653 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1654 qemu_put_be16s(f, &s->vbe_regs[i]);
1655 qemu_put_be32s(f, &s->vbe_start_addr);
1656 qemu_put_be32s(f, &s->vbe_line_offset);
1657 qemu_put_be32s(f, &s->vbe_bank_mask);
1659 qemu_put_byte(f, 0);
1663 static int vga_load(QEMUFile *f, void *opaque, int version_id)
1665 VGAState *s = opaque;
1668 if (version_id != 1)
1671 qemu_get_be32s(f, &s->latch);
1672 qemu_get_8s(f, &s->sr_index);
1673 qemu_get_buffer(f, s->sr, 8);
1674 qemu_get_8s(f, &s->gr_index);
1675 qemu_get_buffer(f, s->gr, 16);
1676 qemu_get_8s(f, &s->ar_index);
1677 qemu_get_buffer(f, s->ar, 21);
1678 qemu_get_be32s(f, &s->ar_flip_flop);
1679 qemu_get_8s(f, &s->cr_index);
1680 qemu_get_buffer(f, s->cr, 256);
1681 qemu_get_8s(f, &s->msr);
1682 qemu_get_8s(f, &s->fcr);
1683 qemu_get_8s(f, &s->st00);
1684 qemu_get_8s(f, &s->st01);
1686 qemu_get_8s(f, &s->dac_state);
1687 qemu_get_8s(f, &s->dac_sub_index);
1688 qemu_get_8s(f, &s->dac_read_index);
1689 qemu_get_8s(f, &s->dac_write_index);
1690 qemu_get_buffer(f, s->dac_cache, 3);
1691 qemu_get_buffer(f, s->palette, 768);
1693 qemu_get_be32s(f, &s->bank_offset);
1694 is_vbe = qemu_get_byte(f);
1695 #ifdef CONFIG_BOCHS_VBE
1698 qemu_get_be16s(f, &s->vbe_index);
1699 for(i = 0; i < VBE_DISPI_INDEX_NB; i++)
1700 qemu_get_be16s(f, &s->vbe_regs[i]);
1701 qemu_get_be32s(f, &s->vbe_start_addr);
1702 qemu_get_be32s(f, &s->vbe_line_offset);
1703 qemu_get_be32s(f, &s->vbe_bank_mask);
1710 s->graphic_mode = -1;
1714 static void vga_map(PCIDevice *pci_dev, int region_num,
1715 uint32_t addr, uint32_t size, int type)
1717 VGAState *s = vga_state;
1718 if (region_num == PCI_ROM_SLOT) {
1719 cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
1721 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
1725 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
1726 unsigned long vga_ram_offset, int vga_ram_size)
1730 for(i = 0;i < 256; i++) {
1732 for(j = 0; j < 8; j++) {
1733 v |= ((i >> j) & 1) << (j * 4);
1738 for(j = 0; j < 4; j++) {
1739 v |= ((i >> (2 * j)) & 3) << (j * 4);
1743 for(i = 0; i < 16; i++) {
1745 for(j = 0; j < 4; j++) {
1748 v |= b << (2 * j + 1);
1755 s->vram_ptr = vga_ram_base;
1756 s->vram_offset = vga_ram_offset;
1757 s->vram_size = vga_ram_size;
1759 s->get_bpp = vga_get_bpp;
1760 s->get_offsets = vga_get_offsets;
1761 s->get_resolution = vga_get_resolution;
1762 graphic_console_init(s->ds, vga_update_display, vga_invalidate_display,
1763 vga_screen_dump, s);
1764 /* XXX: currently needed for display */
1769 int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
1770 unsigned long vga_ram_offset, int vga_ram_size,
1771 unsigned long vga_bios_offset, int vga_bios_size)
1775 s = qemu_mallocz(sizeof(VGAState));
1779 vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
1781 register_savevm("vga", 0, 1, vga_save, vga_load, s);
1783 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
1785 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
1786 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
1787 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
1788 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
1790 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
1792 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
1793 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
1794 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
1795 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
1798 #ifdef CONFIG_BOCHS_VBE
1799 s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
1800 s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
1801 #if defined (TARGET_I386)
1802 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1803 register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
1805 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1806 register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
1808 /* old Bochs IO ports */
1809 register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
1810 register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
1812 register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
1813 register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
1815 register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
1816 register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
1818 register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
1819 register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
1821 #endif /* CONFIG_BOCHS_VBE */
1823 vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
1824 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
1831 d = pci_register_device(bus, "VGA",
1834 pci_conf = d->config;
1835 pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
1836 pci_conf[0x01] = 0x12;
1837 pci_conf[0x02] = 0x11;
1838 pci_conf[0x03] = 0x11;
1839 pci_conf[0x0a] = 0x00; // VGA controller
1840 pci_conf[0x0b] = 0x03;
1841 pci_conf[0x0e] = 0x00; // header_type
1843 /* XXX: vga_ram_size must be a power of two */
1844 pci_register_io_region(d, 0, vga_ram_size,
1845 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1846 if (vga_bios_size != 0) {
1847 unsigned int bios_total_size;
1848 s->bios_offset = vga_bios_offset;
1849 s->bios_size = vga_bios_size;
1850 /* must be a power of two */
1851 bios_total_size = 1;
1852 while (bios_total_size < vga_bios_size)
1853 bios_total_size <<= 1;
1854 pci_register_io_region(d, PCI_ROM_SLOT, bios_total_size,
1855 PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
1858 #ifdef CONFIG_BOCHS_VBE
1859 /* XXX: use optimized standard vga accesses */
1860 cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
1861 vga_ram_size, vga_ram_offset);
1867 /********************************************************/
1868 /* vga screen dump */
1870 static int vga_save_w, vga_save_h;
1872 static void vga_save_dpy_update(DisplayState *s,
1873 int x, int y, int w, int h)
1877 static void vga_save_dpy_resize(DisplayState *s, int w, int h)
1879 s->linesize = w * 4;
1880 s->data = qemu_malloc(h * s->linesize);
1885 static void vga_save_dpy_refresh(DisplayState *s)
1889 static int ppm_save(const char *filename, uint8_t *data,
1890 int w, int h, int linesize)
1897 f = fopen(filename, "wb");
1900 fprintf(f, "P6\n%d %d\n%d\n",
1903 for(y = 0; y < h; y++) {
1905 for(x = 0; x < w; x++) {
1907 fputc((v >> 16) & 0xff, f);
1908 fputc((v >> 8) & 0xff, f);
1909 fputc((v) & 0xff, f);
1918 /* save the vga display in a PPM image even if no display is
1920 static void vga_screen_dump(void *opaque, const char *filename)
1922 VGAState *s = (VGAState *)opaque;
1923 DisplayState *saved_ds, ds1, *ds = &ds1;
1925 /* XXX: this is a little hackish */
1926 vga_invalidate_display(s);
1929 memset(ds, 0, sizeof(DisplayState));
1930 ds->dpy_update = vga_save_dpy_update;
1931 ds->dpy_resize = vga_save_dpy_resize;
1932 ds->dpy_refresh = vga_save_dpy_refresh;
1936 s->graphic_mode = -1;
1937 vga_update_display(s);
1940 ppm_save(filename, ds->data, vga_save_w, vga_save_h,
1942 qemu_free(ds->data);