/* * QEMU VGA Emulator. * * Copyright (c) 2003 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "hw.h" #include "console.h" #include "pc.h" #include "pci.h" #include "vga_int.h" #include "pixel_ops.h" #include "qemu-timer.h" //#define DEBUG_VGA //#define DEBUG_VGA_MEM //#define DEBUG_VGA_REG //#define DEBUG_BOCHS_VBE /* force some bits to zero */ const uint8_t sr_mask[8] = { 0x03, 0x3d, 0x0f, 0x3f, 0x0e, 0x00, 0x00, 0xff, }; const uint8_t gr_mask[16] = { 0x0f, /* 0x00 */ 0x0f, /* 0x01 */ 0x0f, /* 0x02 */ 0x1f, /* 0x03 */ 0x03, /* 0x04 */ 0x7b, /* 0x05 */ 0x0f, /* 0x06 */ 0x0f, /* 0x07 */ 0xff, /* 0x08 */ 0x00, /* 0x09 */ 0x00, /* 0x0a */ 0x00, /* 0x0b */ 0x00, /* 0x0c */ 0x00, /* 0x0d */ 0x00, /* 0x0e */ 0x00, /* 0x0f */ }; #define cbswap_32(__x) \ ((uint32_t)( \ (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )) #ifdef HOST_WORDS_BIGENDIAN #define PAT(x) cbswap_32(x) #else #define PAT(x) (x) #endif #ifdef HOST_WORDS_BIGENDIAN #define BIG 1 #else #define BIG 0 #endif #ifdef HOST_WORDS_BIGENDIAN #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff) #else #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff) #endif static const uint32_t mask16[16] = { PAT(0x00000000), PAT(0x000000ff), PAT(0x0000ff00), PAT(0x0000ffff), PAT(0x00ff0000), PAT(0x00ff00ff), PAT(0x00ffff00), PAT(0x00ffffff), PAT(0xff000000), PAT(0xff0000ff), PAT(0xff00ff00), PAT(0xff00ffff), PAT(0xffff0000), PAT(0xffff00ff), PAT(0xffffff00), PAT(0xffffffff), }; #undef PAT #ifdef HOST_WORDS_BIGENDIAN #define PAT(x) (x) #else #define PAT(x) cbswap_32(x) #endif static const uint32_t dmask16[16] = { PAT(0x00000000), PAT(0x000000ff), PAT(0x0000ff00), PAT(0x0000ffff), PAT(0x00ff0000), PAT(0x00ff00ff), PAT(0x00ffff00), PAT(0x00ffffff), PAT(0xff000000), PAT(0xff0000ff), PAT(0xff00ff00), PAT(0xff00ffff), PAT(0xffff0000), PAT(0xffff00ff), PAT(0xffffff00), PAT(0xffffffff), }; static const uint32_t dmask4[4] = { PAT(0x00000000), PAT(0x0000ffff), PAT(0xffff0000), PAT(0xffffffff), }; static uint32_t expand4[256]; static uint16_t expand2[256]; static uint8_t expand4to8[16]; typedef VGACommonState VGAState; static void vga_screen_dump(void *opaque, const char *filename); static char *screen_dump_filename; static DisplayChangeListener *screen_dump_dcl; static void vga_dumb_update_retrace_info(VGAState *s) { (void) s; } static void vga_precise_update_retrace_info(VGAState *s) { int htotal_chars; int hretr_start_char; int hretr_skew_chars; int hretr_end_char; int vtotal_lines; int vretr_start_line; int vretr_end_line; int div2, sldiv2, dots; int clocking_mode; int clock_sel; const int clk_hz[] = {25175000, 28322000, 25175000, 25175000}; int64_t chars_per_sec; struct vga_precise_retrace *r = &s->retrace_info.precise; htotal_chars = s->cr[0x00] + 5; hretr_start_char = s->cr[0x04]; hretr_skew_chars = (s->cr[0x05] >> 5) & 3; hretr_end_char = s->cr[0x05] & 0x1f; vtotal_lines = (s->cr[0x06] | (((s->cr[0x07] & 1) | ((s->cr[0x07] >> 4) & 2)) << 8)) + 2 ; vretr_start_line = s->cr[0x10] | ((((s->cr[0x07] >> 2) & 1) | ((s->cr[0x07] >> 6) & 2)) << 8) ; vretr_end_line = s->cr[0x11] & 0xf; div2 = (s->cr[0x17] >> 2) & 1; sldiv2 = (s->cr[0x17] >> 3) & 1; clocking_mode = (s->sr[0x01] >> 3) & 1; clock_sel = (s->msr >> 2) & 3; dots = (s->msr & 1) ? 8 : 9; chars_per_sec = clk_hz[clock_sel] / dots; htotal_chars <<= clocking_mode; r->total_chars = vtotal_lines * htotal_chars; if (r->freq) { r->ticks_per_char = ticks_per_sec / (r->total_chars * r->freq); } else { r->ticks_per_char = ticks_per_sec / chars_per_sec; } r->vstart = vretr_start_line; r->vend = r->vstart + vretr_end_line + 1; r->hstart = hretr_start_char + hretr_skew_chars; r->hend = r->hstart + hretr_end_char + 1; r->htotal = htotal_chars; #if 0 printf ( "hz=%f\n" "htotal = %d\n" "hretr_start = %d\n" "hretr_skew = %d\n" "hretr_end = %d\n" "vtotal = %d\n" "vretr_start = %d\n" "vretr_end = %d\n" "div2 = %d sldiv2 = %d\n" "clocking_mode = %d\n" "clock_sel = %d %d\n" "dots = %d\n" "ticks/char = %lld\n" "\n", (double) ticks_per_sec / (r->ticks_per_char * r->total_chars), htotal_chars, hretr_start_char, hretr_skew_chars, hretr_end_char, vtotal_lines, vretr_start_line, vretr_end_line, div2, sldiv2, clocking_mode, clock_sel, clk_hz[clock_sel], dots, r->ticks_per_char ); #endif } static uint8_t vga_precise_retrace(VGAState *s) { struct vga_precise_retrace *r = &s->retrace_info.precise; uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE); if (r->total_chars) { int cur_line, cur_line_char, cur_char; int64_t cur_tick; cur_tick = qemu_get_clock(vm_clock); cur_char = (cur_tick / r->ticks_per_char) % r->total_chars; cur_line = cur_char / r->htotal; if (cur_line >= r->vstart && cur_line <= r->vend) { val |= ST01_V_RETRACE | ST01_DISP_ENABLE; } else { cur_line_char = cur_char % r->htotal; if (cur_line_char >= r->hstart && cur_line_char <= r->hend) { val |= ST01_DISP_ENABLE; } } return val; } else { return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE); } } static uint8_t vga_dumb_retrace(VGAState *s) { return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE); } uint32_t vga_ioport_read(void *opaque, uint32_t addr) { VGACommonState *s = opaque; int val, index; /* check port range access depending on color/monochrome mode */ if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) { val = 0xff; } else { switch(addr) { case 0x3c0: if (s->ar_flip_flop == 0) { val = s->ar_index; } else { val = 0; } break; case 0x3c1: index = s->ar_index & 0x1f; if (index < 21) val = s->ar[index]; else val = 0; break; case 0x3c2: val = s->st00; break; case 0x3c4: val = s->sr_index; break; case 0x3c5: val = s->sr[s->sr_index]; #ifdef DEBUG_VGA_REG printf("vga: read SR%x = 0x%02x\n", s->sr_index, val); #endif break; case 0x3c7: val = s->dac_state; break; case 0x3c8: val = s->dac_write_index; break; case 0x3c9: val = s->palette[s->dac_read_index * 3 + s->dac_sub_index]; if (++s->dac_sub_index == 3) { s->dac_sub_index = 0; s->dac_read_index++; } break; case 0x3ca: val = s->fcr; break; case 0x3cc: val = s->msr; break; case 0x3ce: val = s->gr_index; break; case 0x3cf: val = s->gr[s->gr_index]; #ifdef DEBUG_VGA_REG printf("vga: read GR%x = 0x%02x\n", s->gr_index, val); #endif break; case 0x3b4: case 0x3d4: val = s->cr_index; break; case 0x3b5: case 0x3d5: val = s->cr[s->cr_index]; #ifdef DEBUG_VGA_REG printf("vga: read CR%x = 0x%02x\n", s->cr_index, val); #endif break; case 0x3ba: case 0x3da: /* just toggle to fool polling */ val = s->st01 = s->retrace(s); s->ar_flip_flop = 0; break; default: val = 0x00; break; } } #if defined(DEBUG_VGA) printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val); #endif return val; } void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val) { VGACommonState *s = opaque; int index; /* check port range access depending on color/monochrome mode */ if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || (addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) return; #ifdef DEBUG_VGA printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val); #endif switch(addr) { case 0x3c0: if (s->ar_flip_flop == 0) { val &= 0x3f; s->ar_index = val; } else { index = s->ar_index & 0x1f; switch(index) { case 0x00 ... 0x0f: s->ar[index] = val & 0x3f; break; case 0x10: s->ar[index] = val & ~0x10; break; case 0x11: s->ar[index] = val; break; case 0x12: s->ar[index] = val & ~0xc0; break; case 0x13: s->ar[index] = val & ~0xf0; break; case 0x14: s->ar[index] = val & ~0xf0; break; default: break; } } s->ar_flip_flop ^= 1; break; case 0x3c2: s->msr = val & ~0x10; s->update_retrace_info(s); break; case 0x3c4: s->sr_index = val & 7; break; case 0x3c5: #ifdef DEBUG_VGA_REG printf("vga: write SR%x = 0x%02x\n", s->sr_index, val); #endif s->sr[s->sr_index] = val & sr_mask[s->sr_index]; if (s->sr_index == 1) s->update_retrace_info(s); break; case 0x3c7: s->dac_read_index = val; s->dac_sub_index = 0; s->dac_state = 3; break; case 0x3c8: s->dac_write_index = val; s->dac_sub_index = 0; s->dac_state = 0; break; case 0x3c9: s->dac_cache[s->dac_sub_index] = val; if (++s->dac_sub_index == 3) { memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3); s->dac_sub_index = 0; s->dac_write_index++; } break; case 0x3ce: s->gr_index = val & 0x0f; break; case 0x3cf: #ifdef DEBUG_VGA_REG printf("vga: write GR%x = 0x%02x\n", s->gr_index, val); #endif s->gr[s->gr_index] = val & gr_mask[s->gr_index]; break; case 0x3b4: case 0x3d4: s->cr_index = val; break; case 0x3b5: case 0x3d5: #ifdef DEBUG_VGA_REG printf("vga: write CR%x = 0x%02x\n", s->cr_index, val); #endif /* handle CR0-7 protection */ if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) { /* can always write bit 4 of CR7 */ if (s->cr_index == 7) s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10); return; } switch(s->cr_index) { case 0x01: /* horizontal display end */ case 0x07: case 0x09: case 0x0c: case 0x0d: case 0x12: /* vertical display end */ s->cr[s->cr_index] = val; break; default: s->cr[s->cr_index] = val; break; } switch(s->cr_index) { case 0x00: case 0x04: case 0x05: case 0x06: case 0x07: case 0x11: case 0x17: s->update_retrace_info(s); break; } break; case 0x3ba: case 0x3da: s->fcr = val & 0x10; break; } } #ifdef CONFIG_BOCHS_VBE static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr) { VGAState *s = opaque; uint32_t val; val = s->vbe_index; return val; } static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) { VGAState *s = opaque; uint32_t val; if (s->vbe_index <= VBE_DISPI_INDEX_NB) { if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) { switch(s->vbe_index) { /* XXX: do not hardcode ? */ case VBE_DISPI_INDEX_XRES: val = VBE_DISPI_MAX_XRES; break; case VBE_DISPI_INDEX_YRES: val = VBE_DISPI_MAX_YRES; break; case VBE_DISPI_INDEX_BPP: val = VBE_DISPI_MAX_BPP; break; default: val = s->vbe_regs[s->vbe_index]; break; } } else { val = s->vbe_regs[s->vbe_index]; } } else { val = 0; } #ifdef DEBUG_BOCHS_VBE printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val); #endif return val; } static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val) { VGAState *s = opaque; s->vbe_index = val; } static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) { VGAState *s = opaque; if (s->vbe_index <= VBE_DISPI_INDEX_NB) { #ifdef DEBUG_BOCHS_VBE printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val); #endif switch(s->vbe_index) { case VBE_DISPI_INDEX_ID: if (val == VBE_DISPI_ID0 || val == VBE_DISPI_ID1 || val == VBE_DISPI_ID2 || val == VBE_DISPI_ID3 || val == VBE_DISPI_ID4) { s->vbe_regs[s->vbe_index] = val; } break; case VBE_DISPI_INDEX_XRES: if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { s->vbe_regs[s->vbe_index] = val; } break; case VBE_DISPI_INDEX_YRES: if (val <= VBE_DISPI_MAX_YRES) { s->vbe_regs[s->vbe_index] = val; } break; case VBE_DISPI_INDEX_BPP: if (val == 0) val = 8; if (val == 4 || val == 8 || val == 15 || val == 16 || val == 24 || val == 32) { s->vbe_regs[s->vbe_index] = val; } break; case VBE_DISPI_INDEX_BANK: if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { val &= (s->vbe_bank_mask >> 2); } else { val &= s->vbe_bank_mask; } s->vbe_regs[s->vbe_index] = val; s->bank_offset = (val << 16); break; case VBE_DISPI_INDEX_ENABLE: if ((val & VBE_DISPI_ENABLED) && !(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) { int h, shift_control; s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = s->vbe_regs[VBE_DISPI_INDEX_XRES]; s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = s->vbe_regs[VBE_DISPI_INDEX_YRES]; s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0; s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0; if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1; else s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); s->vbe_start_addr = 0; /* clear the screen (should be done in BIOS) */ if (!(val & VBE_DISPI_NOCLEARMEM)) { memset(s->vram_ptr, 0, s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); } /* we initialize the VGA graphic mode (should be done in BIOS) */ s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */ s->cr[0x17] |= 3; /* no CGA modes */ s->cr[0x13] = s->vbe_line_offset >> 3; /* width */ s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; /* height (only meaningful if < 1024) */ h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1; s->cr[0x12] = h; s->cr[0x07] = (s->cr[0x07] & ~0x42) | ((h >> 7) & 0x02) | ((h >> 3) & 0x40); /* line compare to 1023 */ s->cr[0x18] = 0xff; s->cr[0x07] |= 0x10; s->cr[0x09] |= 0x40; if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { shift_control = 0; s->sr[0x01] &= ~8; /* no double line */ } else { shift_control = 2; s->sr[4] |= 0x08; /* set chain 4 mode */ s->sr[2] |= 0x0f; /* activate all planes */ } s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5); s->cr[0x09] &= ~0x9f; /* no double scan */ } else { /* XXX: the bios should do that */ s->bank_offset = 0; } s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0; s->vbe_regs[s->vbe_index] = val; break; case VBE_DISPI_INDEX_VIRT_WIDTH: { int w, h, line_offset; if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES]) return; w = val; if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) line_offset = w >> 1; else line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); h = s->vram_size / line_offset; /* XXX: support weird bochs semantics ? */ if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES]) return; s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; s->vbe_line_offset = line_offset; } break; case VBE_DISPI_INDEX_X_OFFSET: case VBE_DISPI_INDEX_Y_OFFSET: { int x; s->vbe_regs[s->vbe_index] = val; s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) s->vbe_start_addr += x >> 1; else s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); s->vbe_start_addr >>= 2; } break; default: break; } } } #endif /* called for accesses between 0xa0000 and 0xc0000 */ uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr) { VGAState *s = opaque; int memory_map_mode, plane; uint32_t ret; /* convert to VGA memory offset */ memory_map_mode = (s->gr[6] >> 2) & 3; addr &= 0x1ffff; switch(memory_map_mode) { case 0: break; case 1: if (addr >= 0x10000) return 0xff; addr += s->bank_offset; break; case 2: addr -= 0x10000; if (addr >= 0x8000) return 0xff; break; default: case 3: addr -= 0x18000; if (addr >= 0x8000) return 0xff; break; } if (s->sr[4] & 0x08) { /* chain 4 mode : simplest access */ ret = s->vram_ptr[addr]; } else if (s->gr[5] & 0x10) { /* odd/even mode (aka text mode mapping) */ plane = (s->gr[4] & 2) | (addr & 1); ret = s->vram_ptr[((addr & ~1) << 1) | plane]; } else { /* standard VGA latched access */ s->latch = ((uint32_t *)s->vram_ptr)[addr]; if (!(s->gr[5] & 0x08)) { /* read mode 0 */ plane = s->gr[4]; ret = GET_PLANE(s->latch, plane); } else { /* read mode 1 */ ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]]; ret |= ret >> 16; ret |= ret >> 8; ret = (~ret) & 0xff; } } return ret; } static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr) { uint32_t v; #ifdef TARGET_WORDS_BIGENDIAN v = vga_mem_readb(opaque, addr) << 8; v |= vga_mem_readb(opaque, addr + 1); #else v = vga_mem_readb(opaque, addr); v |= vga_mem_readb(opaque, addr + 1) << 8; #endif return v; } static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr) { uint32_t v; #ifdef TARGET_WORDS_BIGENDIAN v = vga_mem_readb(opaque, addr) << 24; v |= vga_mem_readb(opaque, addr + 1) << 16; v |= vga_mem_readb(opaque, addr + 2) << 8; v |= vga_mem_readb(opaque, addr + 3); #else v = vga_mem_readb(opaque, addr); v |= vga_mem_readb(opaque, addr + 1) << 8; v |= vga_mem_readb(opaque, addr + 2) << 16; v |= vga_mem_readb(opaque, addr + 3) << 24; #endif return v; } /* called for accesses between 0xa0000 and 0xc0000 */ void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) { VGAState *s = opaque; int memory_map_mode, plane, write_mode, b, func_select, mask; uint32_t write_mask, bit_mask, set_mask; #ifdef DEBUG_VGA_MEM printf("vga: [0x" TARGET_FMT_plx "] = 0x%02x\n", addr, val); #endif /* convert to VGA memory offset */ memory_map_mode = (s->gr[6] >> 2) & 3; addr &= 0x1ffff; switch(memory_map_mode) { case 0: break; case 1: if (addr >= 0x10000) return; addr += s->bank_offset; break; case 2: addr -= 0x10000; if (addr >= 0x8000) return; break; default: case 3: addr -= 0x18000; if (addr >= 0x8000) return; break; } if (s->sr[4] & 0x08) { /* chain 4 mode : simplest access */ plane = addr & 3; mask = (1 << plane); if (s->sr[2] & mask) { s->vram_ptr[addr] = val; #ifdef DEBUG_VGA_MEM printf("vga: chain4: [0x" TARGET_FMT_plx "]\n", addr); #endif s->plane_updated |= mask; /* only used to detect font change */ cpu_physical_memory_set_dirty(s->vram_offset + addr); } } else if (s->gr[5] & 0x10) { /* odd/even mode (aka text mode mapping) */ plane = (s->gr[4] & 2) | (addr & 1); mask = (1 << plane); if (s->sr[2] & mask) { addr = ((addr & ~1) << 1) | plane; s->vram_ptr[addr] = val; #ifdef DEBUG_VGA_MEM printf("vga: odd/even: [0x" TARGET_FMT_plx "]\n", addr); #endif s->plane_updated |= mask; /* only used to detect font change */ cpu_physical_memory_set_dirty(s->vram_offset + addr); } } else { /* standard VGA latched access */ write_mode = s->gr[5] & 3; switch(write_mode) { default: case 0: /* rotate */ b = s->gr[3] & 7; val = ((val >> b) | (val << (8 - b))) & 0xff; val |= val << 8; val |= val << 16; /* apply set/reset mask */ set_mask = mask16[s->gr[1]]; val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask); bit_mask = s->gr[8]; break; case 1: val = s->latch; goto do_write; case 2: val = mask16[val & 0x0f]; bit_mask = s->gr[8]; break; case 3: /* rotate */ b = s->gr[3] & 7; val = (val >> b) | (val << (8 - b)); bit_mask = s->gr[8] & val; val = mask16[s->gr[0]]; break; } /* apply logical operation */ func_select = s->gr[3] >> 3; switch(func_select) { case 0: default: /* nothing to do */ break; case 1: /* and */ val &= s->latch; break; case 2: /* or */ val |= s->latch; break; case 3: /* xor */ val ^= s->latch; break; } /* apply bit mask */ bit_mask |= bit_mask << 8; bit_mask |= bit_mask << 16; val = (val & bit_mask) | (s->latch & ~bit_mask); do_write: /* mask data according to sr[2] */ mask = s->sr[2]; s->plane_updated |= mask; /* only used to detect font change */ write_mask = mask16[mask]; ((uint32_t *)s->vram_ptr)[addr] = (((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | (val & write_mask); #ifdef DEBUG_VGA_MEM printf("vga: latch: [0x" TARGET_FMT_plx "] mask=0x%08x val=0x%08x\n", addr * 4, write_mask, val); #endif cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2)); } } static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) { #ifdef TARGET_WORDS_BIGENDIAN vga_mem_writeb(opaque, addr, (val >> 8) & 0xff); vga_mem_writeb(opaque, addr + 1, val & 0xff); #else vga_mem_writeb(opaque, addr, val & 0xff); vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); #endif } static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) { #ifdef TARGET_WORDS_BIGENDIAN vga_mem_writeb(opaque, addr, (val >> 24) & 0xff); vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff); vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff); vga_mem_writeb(opaque, addr + 3, val & 0xff); #else vga_mem_writeb(opaque, addr, val & 0xff); vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff); vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff); #endif } typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, const uint8_t *font_ptr, int h, uint32_t fgcol, uint32_t bgcol); typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, const uint8_t *font_ptr, int h, uint32_t fgcol, uint32_t bgcol, int dup9); typedef void vga_draw_line_func(VGAState *s1, uint8_t *d, const uint8_t *s, int width); #define DEPTH 8 #include "vga_template.h" #define DEPTH 15 #include "vga_template.h" #define BGR_FORMAT #define DEPTH 15 #include "vga_template.h" #define DEPTH 16 #include "vga_template.h" #define BGR_FORMAT #define DEPTH 16 #include "vga_template.h" #define DEPTH 32 #include "vga_template.h" #define BGR_FORMAT #define DEPTH 32 #include "vga_template.h" static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) { unsigned int col; col = rgb_to_pixel8(r, g, b); col |= col << 8; col |= col << 16; return col; } static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) { unsigned int col; col = rgb_to_pixel15(r, g, b); col |= col << 16; return col; } static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g, unsigned int b) { unsigned int col; col = rgb_to_pixel15bgr(r, g, b); col |= col << 16; return col; } static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) { unsigned int col; col = rgb_to_pixel16(r, g, b); col |= col << 16; return col; } static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g, unsigned int b) { unsigned int col; col = rgb_to_pixel16bgr(r, g, b); col |= col << 16; return col; } static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) { unsigned int col; col = rgb_to_pixel32(r, g, b); return col; } static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b) { unsigned int col; col = rgb_to_pixel32bgr(r, g, b); return col; } /* return true if the palette was modified */ static int update_palette16(VGAState *s) { int full_update, i; uint32_t v, col, *palette; full_update = 0; palette = s->last_palette; for(i = 0; i < 16; i++) { v = s->ar[i]; if (s->ar[0x10] & 0x80) v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf); else v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f); v = v * 3; col = s->rgb_to_pixel(c6_to_8(s->palette[v]), c6_to_8(s->palette[v + 1]), c6_to_8(s->palette[v + 2])); if (col != palette[i]) { full_update = 1; palette[i] = col; } } return full_update; } /* return true if the palette was modified */ static int update_palette256(VGAState *s) { int full_update, i; uint32_t v, col, *palette; full_update = 0; palette = s->last_palette; v = 0; for(i = 0; i < 256; i++) { if (s->dac_8bit) { col = s->rgb_to_pixel(s->palette[v], s->palette[v + 1], s->palette[v + 2]); } else { col = s->rgb_to_pixel(c6_to_8(s->palette[v]), c6_to_8(s->palette[v + 1]), c6_to_8(s->palette[v + 2])); } if (col != palette[i]) { full_update = 1; palette[i] = col; } v += 3; } return full_update; } static void vga_get_offsets(VGAState *s, uint32_t *pline_offset, uint32_t *pstart_addr, uint32_t *pline_compare) { uint32_t start_addr, line_offset, line_compare; #ifdef CONFIG_BOCHS_VBE if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { line_offset = s->vbe_line_offset; start_addr = s->vbe_start_addr; line_compare = 65535; } else #endif { /* compute line_offset in bytes */ line_offset = s->cr[0x13]; line_offset <<= 3; /* starting address */ start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8); /* line compare */ line_compare = s->cr[0x18] | ((s->cr[0x07] & 0x10) << 4) | ((s->cr[0x09] & 0x40) << 3); } *pline_offset = line_offset; *pstart_addr = start_addr; *pline_compare = line_compare; } /* update start_addr and line_offset. Return TRUE if modified */ static int update_basic_params(VGAState *s) { int full_update; uint32_t start_addr, line_offset, line_compare; full_update = 0; s->get_offsets(s, &line_offset, &start_addr, &line_compare); if (line_offset != s->line_offset || start_addr != s->start_addr || line_compare != s->line_compare) { s->line_offset = line_offset; s->start_addr = start_addr; s->line_compare = line_compare; full_update = 1; } return full_update; } #define NB_DEPTHS 7 static inline int get_depth_index(DisplayState *s) { switch(ds_get_bits_per_pixel(s)) { default: case 8: return 0; case 15: return 1; case 16: return 2; case 32: if (is_surface_bgr(s->surface)) return 4; else return 3; } } static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = { vga_draw_glyph8_8, vga_draw_glyph8_16, vga_draw_glyph8_16, vga_draw_glyph8_32, vga_draw_glyph8_32, vga_draw_glyph8_16, vga_draw_glyph8_16, }; static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = { vga_draw_glyph16_8, vga_draw_glyph16_16, vga_draw_glyph16_16, vga_draw_glyph16_32, vga_draw_glyph16_32, vga_draw_glyph16_16, vga_draw_glyph16_16, }; static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = { vga_draw_glyph9_8, vga_draw_glyph9_16, vga_draw_glyph9_16, vga_draw_glyph9_32, vga_draw_glyph9_32, vga_draw_glyph9_16, vga_draw_glyph9_16, }; static const uint8_t cursor_glyph[32 * 4] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; static void vga_get_text_resolution(VGAState *s, int *pwidth, int *pheight, int *pcwidth, int *pcheight) { int width, cwidth, height, cheight; /* total width & height */ cheight = (s->cr[9] & 0x1f) + 1; cwidth = 8; if (!(s->sr[1] & 0x01)) cwidth = 9; if (s->sr[1] & 0x08) cwidth = 16; /* NOTE: no 18 pixel wide */ width = (s->cr[0x01] + 1); if (s->cr[0x06] == 100) { /* ugly hack for CGA 160x100x16 - explain me the logic */ height = 100; } else { height = s->cr[0x12] | ((s->cr[0x07] & 0x02) << 7) | ((s->cr[0x07] & 0x40) << 3); height = (height + 1) / cheight; } *pwidth = width; *pheight = height; *pcwidth = cwidth; *pcheight = cheight; } typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b); static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = { rgb_to_pixel8_dup, rgb_to_pixel15_dup, rgb_to_pixel16_dup, rgb_to_pixel32_dup, rgb_to_pixel32bgr_dup, rgb_to_pixel15bgr_dup, rgb_to_pixel16bgr_dup, }; /* * Text mode update * Missing: * - double scan * - double width * - underline * - flashing */ static void vga_draw_text(VGAState *s, int full_update) { int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr; int cx_min, cx_max, linesize, x_incr; uint32_t offset, fgcol, bgcol, v, cursor_offset; uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr; const uint8_t *font_ptr, *font_base[2]; int dup9, line_offset, depth_index; uint32_t *palette; uint32_t *ch_attr_ptr; vga_draw_glyph8_func *vga_draw_glyph8; vga_draw_glyph9_func *vga_draw_glyph9; /* compute font data address (in plane 2) */ v = s->sr[3]; offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; if (offset != s->font_offsets[0]) { s->font_offsets[0] = offset; full_update = 1; } font_base[0] = s->vram_ptr + offset; offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; font_base[1] = s->vram_ptr + offset; if (offset != s->font_offsets[1]) { s->font_offsets[1] = offset; full_update = 1; } if (s->plane_updated & (1 << 2)) { /* if the plane 2 was modified since the last display, it indicates the font may have been modified */ s->plane_updated = 0; full_update = 1; } full_update |= update_basic_params(s); line_offset = s->line_offset; s1 = s->vram_ptr + (s->start_addr * 4); vga_get_text_resolution(s, &width, &height, &cw, &cheight); x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); if ((height * width) > CH_ATTR_SIZE) { /* better than nothing: exit if transient size is too big */ return; } if (width != s->last_width || height != s->last_height || cw != s->last_cw || cheight != s->last_ch || s->last_depth) { s->last_scr_width = width * cw; s->last_scr_height = height * cheight; qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height); s->last_depth = 0; s->last_width = width; s->last_height = height; s->last_ch = cheight; s->last_cw = cw; full_update = 1; } s->rgb_to_pixel = rgb_to_pixel_dup_table[get_depth_index(s->ds)]; full_update |= update_palette16(s); palette = s->last_palette; x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; if (cursor_offset != s->cursor_offset || s->cr[0xa] != s->cursor_start || s->cr[0xb] != s->cursor_end) { /* if the cursor position changed, we update the old and new chars */ if (s->cursor_offset < CH_ATTR_SIZE) s->last_ch_attr[s->cursor_offset] = -1; if (cursor_offset < CH_ATTR_SIZE) s->last_ch_attr[cursor_offset] = -1; s->cursor_offset = cursor_offset; s->cursor_start = s->cr[0xa]; s->cursor_end = s->cr[0xb]; } cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4; depth_index = get_depth_index(s->ds); if (cw == 16) vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; else vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; dest = ds_get_data(s->ds); linesize = ds_get_linesize(s->ds); ch_attr_ptr = s->last_ch_attr; for(cy = 0; cy < height; cy++) { d1 = dest; src = s1; cx_min = width; cx_max = -1; for(cx = 0; cx < width; cx++) { ch_attr = *(uint16_t *)src; if (full_update || ch_attr != *ch_attr_ptr) { if (cx < cx_min) cx_min = cx; if (cx > cx_max) cx_max = cx; *ch_attr_ptr = ch_attr; #ifdef HOST_WORDS_BIGENDIAN ch = ch_attr >> 8; cattr = ch_attr & 0xff; #else ch = ch_attr & 0xff; cattr = ch_attr >> 8; #endif font_ptr = font_base[(cattr >> 3) & 1]; font_ptr += 32 * 4 * ch; bgcol = palette[cattr >> 4]; fgcol = palette[cattr & 0x0f]; if (cw != 9) { vga_draw_glyph8(d1, linesize, font_ptr, cheight, fgcol, bgcol); } else { dup9 = 0; if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04)) dup9 = 1; vga_draw_glyph9(d1, linesize, font_ptr, cheight, fgcol, bgcol, dup9); } if (src == cursor_ptr && !(s->cr[0x0a] & 0x20)) { int line_start, line_last, h; /* draw the cursor */ line_start = s->cr[0x0a] & 0x1f; line_last = s->cr[0x0b] & 0x1f; /* XXX: check that */ if (line_last > cheight - 1) line_last = cheight - 1; if (line_last >= line_start && line_start < cheight) { h = line_last - line_start + 1; d = d1 + linesize * line_start; if (cw != 9) { vga_draw_glyph8(d, linesize, cursor_glyph, h, fgcol, bgcol); } else { vga_draw_glyph9(d, linesize, cursor_glyph, h, fgcol, bgcol, 1); } } } } d1 += x_incr; src += 4; ch_attr_ptr++; } if (cx_max != -1) { dpy_update(s->ds, cx_min * cw, cy * cheight, (cx_max - cx_min + 1) * cw, cheight); } dest += linesize * cheight; s1 += line_offset; } } enum { VGA_DRAW_LINE2, VGA_DRAW_LINE2D2, VGA_DRAW_LINE4, VGA_DRAW_LINE4D2, VGA_DRAW_LINE8D2, VGA_DRAW_LINE8, VGA_DRAW_LINE15, VGA_DRAW_LINE16, VGA_DRAW_LINE24, VGA_DRAW_LINE32, VGA_DRAW_LINE_NB, }; static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = { vga_draw_line2_8, vga_draw_line2_16, vga_draw_line2_16, vga_draw_line2_32, vga_draw_line2_32, vga_draw_line2_16, vga_draw_line2_16, vga_draw_line2d2_8, vga_draw_line2d2_16, vga_draw_line2d2_16, vga_draw_line2d2_32, vga_draw_line2d2_32, vga_draw_line2d2_16, vga_draw_line2d2_16, vga_draw_line4_8, vga_draw_line4_16, vga_draw_line4_16, vga_draw_line4_32, vga_draw_line4_32, vga_draw_line4_16, vga_draw_line4_16, vga_draw_line4d2_8, vga_draw_line4d2_16, vga_draw_line4d2_16, vga_draw_line4d2_32, vga_draw_line4d2_32, vga_draw_line4d2_16, vga_draw_line4d2_16, vga_draw_line8d2_8, vga_draw_line8d2_16, vga_draw_line8d2_16, vga_draw_line8d2_32, vga_draw_line8d2_32, vga_draw_line8d2_16, vga_draw_line8d2_16, vga_draw_line8_8, vga_draw_line8_16, vga_draw_line8_16, vga_draw_line8_32, vga_draw_line8_32, vga_draw_line8_16, vga_draw_line8_16, vga_draw_line15_8, vga_draw_line15_15, vga_draw_line15_16, vga_draw_line15_32, vga_draw_line15_32bgr, vga_draw_line15_15bgr, vga_draw_line15_16bgr, vga_draw_line16_8, vga_draw_line16_15, vga_draw_line16_16, vga_draw_line16_32, vga_draw_line16_32bgr, vga_draw_line16_15bgr, vga_draw_line16_16bgr, vga_draw_line24_8, vga_draw_line24_15, vga_draw_line24_16, vga_draw_line24_32, vga_draw_line24_32bgr, vga_draw_line24_15bgr, vga_draw_line24_16bgr, vga_draw_line32_8, vga_draw_line32_15, vga_draw_line32_16, vga_draw_line32_32, vga_draw_line32_32bgr, vga_draw_line32_15bgr, vga_draw_line32_16bgr, }; static int vga_get_bpp(VGAState *s) { int ret; #ifdef CONFIG_BOCHS_VBE if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; } else #endif { ret = 0; } return ret; } static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight) { int width, height; #ifdef CONFIG_BOCHS_VBE if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { width = s->vbe_regs[VBE_DISPI_INDEX_XRES]; height = s->vbe_regs[VBE_DISPI_INDEX_YRES]; } else #endif { width = (s->cr[0x01] + 1) * 8; height = s->cr[0x12] | ((s->cr[0x07] & 0x02) << 7) | ((s->cr[0x07] & 0x40) << 3); height = (height + 1); } *pwidth = width; *pheight = height; } void vga_invalidate_scanlines(VGAState *s, int y1, int y2) { int y; if (y1 >= VGA_MAX_HEIGHT) return; if (y2 >= VGA_MAX_HEIGHT) y2 = VGA_MAX_HEIGHT; for(y = y1; y < y2; y++) { s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f); } } static void vga_sync_dirty_bitmap(VGAState *s) { if (s->map_addr) cpu_physical_sync_dirty_bitmap(s->map_addr, s->map_end); if (s->lfb_vram_mapped) { cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa0000, 0xa8000); cpu_physical_sync_dirty_bitmap(isa_mem_base + 0xa8000, 0xb0000); } } /* * graphic modes */ static void vga_draw_graphic(VGAState *s, int full_update) { int y1, y, update, linesize, y_start, double_scan, mask, depth; int width, height, shift_control, line_offset, bwidth, bits; ram_addr_t page0, page1, page_min, page_max; int disp_width, multi_scan, multi_run; uint8_t *d; uint32_t v, addr1, addr; vga_draw_line_func *vga_draw_line; full_update |= update_basic_params(s); if (!full_update) vga_sync_dirty_bitmap(s); s->get_resolution(s, &width, &height); disp_width = width; shift_control = (s->gr[0x05] >> 5) & 3; double_scan = (s->cr[0x09] >> 7); if (shift_control != 1) { multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1; } else { /* in CGA modes, multi_scan is ignored */ /* XXX: is it correct ? */ multi_scan = double_scan; } multi_run = multi_scan; if (shift_control != s->shift_control || double_scan != s->double_scan) { full_update = 1; s->shift_control = shift_control; s->double_scan = double_scan; } if (shift_control == 0) { if (s->sr[0x01] & 8) { disp_width <<= 1; } } else if (shift_control == 1) { if (s->sr[0x01] & 8) { disp_width <<= 1; } } depth = s->get_bpp(s); if (s->line_offset != s->last_line_offset || disp_width != s->last_width || height != s->last_height || s->last_depth != depth) { #if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) if (depth == 16 || depth == 32) { #else if (depth == 32) { #endif qemu_free_displaysurface(s->ds); s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth, s->line_offset, s->vram_ptr + (s->start_addr * 4)); #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) s->ds->surface->pf = qemu_different_endianness_pixelformat(depth); #endif dpy_resize(s->ds); } else { qemu_console_resize(s->ds, disp_width, height); } s->last_scr_width = disp_width; s->last_scr_height = height; s->last_width = disp_width; s->last_height = height; s->last_line_offset = s->line_offset; s->last_depth = depth; full_update = 1; } else if (is_buffer_shared(s->ds->surface) && (full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) { s->ds->surface->data = s->vram_ptr + (s->start_addr * 4); dpy_setdata(s->ds); } s->rgb_to_pixel = rgb_to_pixel_dup_table[get_depth_index(s->ds)]; if (shift_control == 0) { full_update |= update_palette16(s); if (s->sr[0x01] & 8) { v = VGA_DRAW_LINE4D2; } else { v = VGA_DRAW_LINE4; } bits = 4; } else if (shift_control == 1) { full_update |= update_palette16(s); if (s->sr[0x01] & 8) { v = VGA_DRAW_LINE2D2; } else { v = VGA_DRAW_LINE2; } bits = 4; } else { switch(s->get_bpp(s)) { default: case 0: full_update |= update_palette256(s); v = VGA_DRAW_LINE8D2; bits = 4; break; case 8: full_update |= update_palette256(s); v = VGA_DRAW_LINE8; bits = 8; break; case 15: v = VGA_DRAW_LINE15; bits = 16; break; case 16: v = VGA_DRAW_LINE16; bits = 16; break; case 24: v = VGA_DRAW_LINE24; bits = 24; break; case 32: v = VGA_DRAW_LINE32; bits = 32; break; } } vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)]; if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate) s->cursor_invalidate(s); line_offset = s->line_offset; #if 0 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", width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]); #endif addr1 = (s->start_addr * 4); bwidth = (width * bits + 7) / 8; y_start = -1; page_min = -1; page_max = 0; d = ds_get_data(s->ds); linesize = ds_get_linesize(s->ds); y1 = 0; for(y = 0; y < height; y++) { addr = addr1; if (!(s->cr[0x17] & 1)) { int shift; /* CGA compatibility handling */ shift = 14 + ((s->cr[0x17] >> 6) & 1); addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); } if (!(s->cr[0x17] & 2)) { addr = (addr & ~0x8000) | ((y1 & 2) << 14); } page0 = s->vram_offset + (addr & TARGET_PAGE_MASK); page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK); update = full_update | cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) | cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG); if ((page1 - page0) > TARGET_PAGE_SIZE) { /* if wide line, can use another page */ update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE, VGA_DIRTY_FLAG); } /* explicit invalidation for the hardware cursor */ update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; if (update) { if (y_start < 0) y_start = y; if (page0 < page_min) page_min = page0; if (page1 > page_max) page_max = page1; if (!(is_buffer_shared(s->ds->surface))) { vga_draw_line(s, d, s->vram_ptr + addr, width); if (s->cursor_draw_line) s->cursor_draw_line(s, d, y); } } else { if (y_start >= 0) { /* flush to display */ dpy_update(s->ds, 0, y_start, disp_width, y - y_start); y_start = -1; } } if (!multi_run) { mask = (s->cr[0x17] & 3) ^ 3; if ((y1 & mask) == mask) addr1 += line_offset; y1++; multi_run = multi_scan; } else { multi_run--; } /* line compare acts on the displayed lines */ if (y == s->line_compare) addr1 = 0; d += linesize; } if (y_start >= 0) { /* flush to display */ dpy_update(s->ds, 0, y_start, disp_width, y - y_start); } /* reset modified pages */ if (page_max >= page_min) { cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE, VGA_DIRTY_FLAG); } memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); } static void vga_draw_blank(VGAState *s, int full_update) { int i, w, val; uint8_t *d; if (!full_update) return; if (s->last_scr_width <= 0 || s->last_scr_height <= 0) return; s->rgb_to_pixel = rgb_to_pixel_dup_table[get_depth_index(s->ds)]; if (ds_get_bits_per_pixel(s->ds) == 8) val = s->rgb_to_pixel(0, 0, 0); else val = 0; w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); d = ds_get_data(s->ds); for(i = 0; i < s->last_scr_height; i++) { memset(d, val, w); d += ds_get_linesize(s->ds); } dpy_update(s->ds, 0, 0, s->last_scr_width, s->last_scr_height); } #define GMODE_TEXT 0 #define GMODE_GRAPH 1 #define GMODE_BLANK 2 static void vga_update_display(void *opaque) { VGAState *s = opaque; int full_update, graphic_mode; if (ds_get_bits_per_pixel(s->ds) == 0) { /* nothing to do */ } else { full_update = s->full_update; s->full_update = 0; if (!(s->ar_index & 0x20)) { graphic_mode = GMODE_BLANK; } else { graphic_mode = s->gr[6] & 1; } if (graphic_mode != s->graphic_mode) { s->graphic_mode = graphic_mode; full_update = 1; } switch(graphic_mode) { case GMODE_TEXT: vga_draw_text(s, full_update); break; case GMODE_GRAPH: vga_draw_graphic(s, full_update); break; case GMODE_BLANK: default: vga_draw_blank(s, full_update); break; } } } /* force a full display refresh */ static void vga_invalidate_display(void *opaque) { VGAState *s = opaque; s->full_update = 1; } void vga_common_reset(VGACommonState *s) { s->lfb_addr = 0; s->lfb_end = 0; s->map_addr = 0; s->map_end = 0; s->lfb_vram_mapped = 0; s->bios_offset = 0; s->bios_size = 0; s->sr_index = 0; memset(s->sr, '\0', sizeof(s->sr)); s->gr_index = 0; memset(s->gr, '\0', sizeof(s->gr)); s->ar_index = 0; memset(s->ar, '\0', sizeof(s->ar)); s->ar_flip_flop = 0; s->cr_index = 0; memset(s->cr, '\0', sizeof(s->cr)); s->msr = 0; s->fcr = 0; s->st00 = 0; s->st01 = 0; s->dac_state = 0; s->dac_sub_index = 0; s->dac_read_index = 0; s->dac_write_index = 0; memset(s->dac_cache, '\0', sizeof(s->dac_cache)); s->dac_8bit = 0; memset(s->palette, '\0', sizeof(s->palette)); s->bank_offset = 0; #ifdef CONFIG_BOCHS_VBE s->vbe_index = 0; memset(s->vbe_regs, '\0', sizeof(s->vbe_regs)); s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0; s->vbe_start_addr = 0; s->vbe_line_offset = 0; s->vbe_bank_mask = (s->vram_size >> 16) - 1; #endif memset(s->font_offsets, '\0', sizeof(s->font_offsets)); s->graphic_mode = -1; /* force full update */ s->shift_control = 0; s->double_scan = 0; s->line_offset = 0; s->line_compare = 0; s->start_addr = 0; s->plane_updated = 0; s->last_cw = 0; s->last_ch = 0; s->last_width = 0; s->last_height = 0; s->last_scr_width = 0; s->last_scr_height = 0; s->cursor_start = 0; s->cursor_end = 0; s->cursor_offset = 0; memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table)); memset(s->last_palette, '\0', sizeof(s->last_palette)); memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr)); switch (vga_retrace_method) { case VGA_RETRACE_DUMB: break; case VGA_RETRACE_PRECISE: memset(&s->retrace_info, 0, sizeof (s->retrace_info)); break; } } static void vga_reset(void *opaque) { VGAState *s = opaque; vga_common_reset(s); } #define TEXTMODE_X(x) ((x) % width) #define TEXTMODE_Y(x) ((x) / width) #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \ ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1)) /* relay text rendering to the display driver * instead of doing a full vga_update_display() */ static void vga_update_text(void *opaque, console_ch_t *chardata) { VGAState *s = opaque; int graphic_mode, i, cursor_offset, cursor_visible; int cw, cheight, width, height, size, c_min, c_max; uint32_t *src; console_ch_t *dst, val; char msg_buffer[80]; int full_update = 0; if (!(s->ar_index & 0x20)) { graphic_mode = GMODE_BLANK; } else { graphic_mode = s->gr[6] & 1; } if (graphic_mode != s->graphic_mode) { s->graphic_mode = graphic_mode; full_update = 1; } if (s->last_width == -1) { s->last_width = 0; full_update = 1; } switch (graphic_mode) { case GMODE_TEXT: /* TODO: update palette */ full_update |= update_basic_params(s); /* total width & height */ cheight = (s->cr[9] & 0x1f) + 1; cw = 8; if (!(s->sr[1] & 0x01)) cw = 9; if (s->sr[1] & 0x08) cw = 16; /* NOTE: no 18 pixel wide */ width = (s->cr[0x01] + 1); if (s->cr[0x06] == 100) { /* ugly hack for CGA 160x100x16 - explain me the logic */ height = 100; } else { height = s->cr[0x12] | ((s->cr[0x07] & 0x02) << 7) | ((s->cr[0x07] & 0x40) << 3); height = (height + 1) / cheight; } size = (height * width); if (size > CH_ATTR_SIZE) { if (!full_update) return; snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode", width, height); break; } if (width != s->last_width || height != s->last_height || cw != s->last_cw || cheight != s->last_ch) { s->last_scr_width = width * cw; s->last_scr_height = height * cheight; s->ds->surface->width = width; s->ds->surface->height = height; dpy_resize(s->ds); s->last_width = width; s->last_height = height; s->last_ch = cheight; s->last_cw = cw; full_update = 1; } /* Update "hardware" cursor */ cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; if (cursor_offset != s->cursor_offset || s->cr[0xa] != s->cursor_start || s->cr[0xb] != s->cursor_end || full_update) { cursor_visible = !(s->cr[0xa] & 0x20); if (cursor_visible && cursor_offset < size && cursor_offset >= 0) dpy_cursor(s->ds, TEXTMODE_X(cursor_offset), TEXTMODE_Y(cursor_offset)); else dpy_cursor(s->ds, -1, -1); s->cursor_offset = cursor_offset; s->cursor_start = s->cr[0xa]; s->cursor_end = s->cr[0xb]; } src = (uint32_t *) s->vram_ptr + s->start_addr; dst = chardata; if (full_update) { for (i = 0; i < size; src ++, dst ++, i ++) console_write_ch(dst, VMEM2CHTYPE(*src)); dpy_update(s->ds, 0, 0, width, height); } else { c_max = 0; for (i = 0; i < size; src ++, dst ++, i ++) { console_write_ch(&val, VMEM2CHTYPE(*src)); if (*dst != val) { *dst = val; c_max = i; break; } } c_min = i; for (; i < size; src ++, dst ++, i ++) { console_write_ch(&val, VMEM2CHTYPE(*src)); if (*dst != val) { *dst = val; c_max = i; } } if (c_min <= c_max) { i = TEXTMODE_Y(c_min); dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1); } } return; case GMODE_GRAPH: if (!full_update) return; s->get_resolution(s, &width, &height); snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode", width, height); break; case GMODE_BLANK: default: if (!full_update) return; snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode"); break; } /* Display a message */ s->last_width = 60; s->last_height = height = 3; dpy_cursor(s->ds, -1, -1); s->ds->surface->width = s->last_width; s->ds->surface->height = height; dpy_resize(s->ds); for (dst = chardata, i = 0; i < s->last_width * height; i ++) console_write_ch(dst ++, ' '); size = strlen(msg_buffer); width = (s->last_width - size) / 2; dst = chardata + s->last_width + width; for (i = 0; i < size; i ++) console_write_ch(dst ++, 0x00200100 | msg_buffer[i]); dpy_update(s->ds, 0, 0, s->last_width, height); } static CPUReadMemoryFunc * const vga_mem_read[3] = { vga_mem_readb, vga_mem_readw, vga_mem_readl, }; static CPUWriteMemoryFunc * const vga_mem_write[3] = { vga_mem_writeb, vga_mem_writew, vga_mem_writel, }; void vga_common_save(QEMUFile *f, void *opaque) { VGACommonState *s = opaque; int i; qemu_put_be32s(f, &s->latch); qemu_put_8s(f, &s->sr_index); qemu_put_buffer(f, s->sr, 8); qemu_put_8s(f, &s->gr_index); qemu_put_buffer(f, s->gr, 16); qemu_put_8s(f, &s->ar_index); qemu_put_buffer(f, s->ar, 21); qemu_put_be32(f, s->ar_flip_flop); qemu_put_8s(f, &s->cr_index); qemu_put_buffer(f, s->cr, 256); qemu_put_8s(f, &s->msr); qemu_put_8s(f, &s->fcr); qemu_put_byte(f, s->st00); qemu_put_8s(f, &s->st01); qemu_put_8s(f, &s->dac_state); qemu_put_8s(f, &s->dac_sub_index); qemu_put_8s(f, &s->dac_read_index); qemu_put_8s(f, &s->dac_write_index); qemu_put_buffer(f, s->dac_cache, 3); qemu_put_buffer(f, s->palette, 768); qemu_put_be32(f, s->bank_offset); #ifdef CONFIG_BOCHS_VBE qemu_put_byte(f, 1); qemu_put_be16s(f, &s->vbe_index); for(i = 0; i < VBE_DISPI_INDEX_NB; i++) qemu_put_be16s(f, &s->vbe_regs[i]); qemu_put_be32s(f, &s->vbe_start_addr); qemu_put_be32s(f, &s->vbe_line_offset); qemu_put_be32s(f, &s->vbe_bank_mask); #else qemu_put_byte(f, 0); #endif } int vga_common_load(QEMUFile *f, void *opaque, int version_id) { VGACommonState *s = opaque; int is_vbe, i; if (version_id > 2) return -EINVAL; qemu_get_be32s(f, &s->latch); qemu_get_8s(f, &s->sr_index); qemu_get_buffer(f, s->sr, 8); qemu_get_8s(f, &s->gr_index); qemu_get_buffer(f, s->gr, 16); qemu_get_8s(f, &s->ar_index); qemu_get_buffer(f, s->ar, 21); s->ar_flip_flop=qemu_get_be32(f); qemu_get_8s(f, &s->cr_index); qemu_get_buffer(f, s->cr, 256); qemu_get_8s(f, &s->msr); qemu_get_8s(f, &s->fcr); qemu_get_8s(f, &s->st00); qemu_get_8s(f, &s->st01); qemu_get_8s(f, &s->dac_state); qemu_get_8s(f, &s->dac_sub_index); qemu_get_8s(f, &s->dac_read_index); qemu_get_8s(f, &s->dac_write_index); qemu_get_buffer(f, s->dac_cache, 3); qemu_get_buffer(f, s->palette, 768); s->bank_offset=qemu_get_be32(f); is_vbe = qemu_get_byte(f); #ifdef CONFIG_BOCHS_VBE if (!is_vbe) return -EINVAL; qemu_get_be16s(f, &s->vbe_index); for(i = 0; i < VBE_DISPI_INDEX_NB; i++) qemu_get_be16s(f, &s->vbe_regs[i]); qemu_get_be32s(f, &s->vbe_start_addr); qemu_get_be32s(f, &s->vbe_line_offset); qemu_get_be32s(f, &s->vbe_bank_mask); #else if (is_vbe) return -EINVAL; #endif /* force refresh */ s->graphic_mode = -1; return 0; } void vga_common_init(VGACommonState *s, int vga_ram_size) { int i, j, v, b; for(i = 0;i < 256; i++) { v = 0; for(j = 0; j < 8; j++) { v |= ((i >> j) & 1) << (j * 4); } expand4[i] = v; v = 0; for(j = 0; j < 4; j++) { v |= ((i >> (2 * j)) & 3) << (j * 4); } expand2[i] = v; } for(i = 0; i < 16; i++) { v = 0; for(j = 0; j < 4; j++) { b = ((i >> j) & 1); v |= b << (2 * j); v |= b << (2 * j + 1); } expand4to8[i] = v; } s->vram_offset = qemu_ram_alloc(vga_ram_size); s->vram_ptr = qemu_get_ram_ptr(s->vram_offset); s->vram_size = vga_ram_size; s->get_bpp = vga_get_bpp; s->get_offsets = vga_get_offsets; s->get_resolution = vga_get_resolution; s->update = vga_update_display; s->invalidate = vga_invalidate_display; s->screen_dump = vga_screen_dump; s->text_update = vga_update_text; switch (vga_retrace_method) { case VGA_RETRACE_DUMB: s->retrace = vga_dumb_retrace; s->update_retrace_info = vga_dumb_update_retrace_info; break; case VGA_RETRACE_PRECISE: s->retrace = vga_precise_retrace; s->update_retrace_info = vga_precise_update_retrace_info; break; } vga_reset(s); } /* used by both ISA and PCI */ void vga_init(VGAState *s) { int vga_io_memory; qemu_register_reset(vga_reset, s); register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s); register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s); register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s); register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s); register_ioport_write(0x3da, 1, 1, vga_ioport_write, s); register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s); register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s); register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s); register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s); register_ioport_read(0x3da, 1, 1, vga_ioport_read, s); s->bank_offset = 0; #ifdef CONFIG_BOCHS_VBE #if defined (TARGET_I386) register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s); register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s); /* old Bochs IO ports */ register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s); register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s); register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s); register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s); #else register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s); register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s); #endif #endif /* CONFIG_BOCHS_VBE */ vga_io_memory = cpu_register_io_memory(vga_mem_read, vga_mem_write, s); cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000, vga_io_memory); qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000); } /* Memory mapped interface */ static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr) { VGAState *s = opaque; return vga_ioport_read(s, addr >> s->it_shift) & 0xff; } static void vga_mm_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) { VGAState *s = opaque; vga_ioport_write(s, addr >> s->it_shift, value & 0xff); } static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr) { VGAState *s = opaque; return vga_ioport_read(s, addr >> s->it_shift) & 0xffff; } static void vga_mm_writew (void *opaque, target_phys_addr_t addr, uint32_t value) { VGAState *s = opaque; vga_ioport_write(s, addr >> s->it_shift, value & 0xffff); } static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr) { VGAState *s = opaque; return vga_ioport_read(s, addr >> s->it_shift); } static void vga_mm_writel (void *opaque, target_phys_addr_t addr, uint32_t value) { VGAState *s = opaque; vga_ioport_write(s, addr >> s->it_shift, value); } static CPUReadMemoryFunc * const vga_mm_read_ctrl[] = { &vga_mm_readb, &vga_mm_readw, &vga_mm_readl, }; static CPUWriteMemoryFunc * const vga_mm_write_ctrl[] = { &vga_mm_writeb, &vga_mm_writew, &vga_mm_writel, }; static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base, target_phys_addr_t ctrl_base, int it_shift) { int s_ioport_ctrl, vga_io_memory; s->it_shift = it_shift; s_ioport_ctrl = cpu_register_io_memory(vga_mm_read_ctrl, vga_mm_write_ctrl, s); vga_io_memory = cpu_register_io_memory(vga_mem_read, vga_mem_write, s); register_savevm("vga", 0, 2, vga_common_save, vga_common_load, s); cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl); s->bank_offset = 0; cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory); qemu_register_coalesced_mmio(vram_base + 0x000a0000, 0x20000); } int isa_vga_mm_init(target_phys_addr_t vram_base, target_phys_addr_t ctrl_base, int it_shift) { VGAState *s; s = qemu_mallocz(sizeof(VGAState)); vga_common_init(s, VGA_RAM_SIZE); vga_mm_init(s, vram_base, ctrl_base, it_shift); s->ds = graphic_console_init(s->update, s->invalidate, s->screen_dump, s->text_update, s); #ifdef CONFIG_BOCHS_VBE /* XXX: use optimized standard vga accesses */ cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS, VGA_RAM_SIZE, s->vram_offset); #endif return 0; } /********************************************************/ /* vga screen dump */ static void vga_save_dpy_update(DisplayState *ds, int x, int y, int w, int h) { if (screen_dump_filename) { ppm_save(screen_dump_filename, ds->surface); screen_dump_filename = NULL; } } static void vga_save_dpy_resize(DisplayState *s) { } static void vga_save_dpy_refresh(DisplayState *s) { } int ppm_save(const char *filename, struct DisplaySurface *ds) { FILE *f; uint8_t *d, *d1; uint32_t v; int y, x; uint8_t r, g, b; f = fopen(filename, "wb"); if (!f) return -1; fprintf(f, "P6\n%d %d\n%d\n", ds->width, ds->height, 255); d1 = ds->data; for(y = 0; y < ds->height; y++) { d = d1; for(x = 0; x < ds->width; x++) { if (ds->pf.bits_per_pixel == 32) v = *(uint32_t *)d; else v = (uint32_t) (*(uint16_t *)d); r = ((v >> ds->pf.rshift) & ds->pf.rmax) * 256 / (ds->pf.rmax + 1); g = ((v >> ds->pf.gshift) & ds->pf.gmax) * 256 / (ds->pf.gmax + 1); b = ((v >> ds->pf.bshift) & ds->pf.bmax) * 256 / (ds->pf.bmax + 1); fputc(r, f); fputc(g, f); fputc(b, f); d += ds->pf.bytes_per_pixel; } d1 += ds->linesize; } fclose(f); return 0; } static DisplayChangeListener* vga_screen_dump_init(DisplayState *ds) { DisplayChangeListener *dcl; dcl = qemu_mallocz(sizeof(DisplayChangeListener)); dcl->dpy_update = vga_save_dpy_update; dcl->dpy_resize = vga_save_dpy_resize; dcl->dpy_refresh = vga_save_dpy_refresh; register_displaychangelistener(ds, dcl); return dcl; } /* save the vga display in a PPM image even if no display is available */ static void vga_screen_dump(void *opaque, const char *filename) { VGAState *s = opaque; if (!screen_dump_dcl) screen_dump_dcl = vga_screen_dump_init(s->ds); screen_dump_filename = (char *)filename; vga_invalidate_display(s); vga_hw_update(); }