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-rw-r--r--hw/vga.c1945
1 files changed, 0 insertions, 1945 deletions
diff --git a/hw/vga.c b/hw/vga.c
deleted file mode 100644
index 8f748b3..0000000
--- a/hw/vga.c
+++ /dev/null
@@ -1,1945 +0,0 @@
-/*
- * 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 "vl.h"
-#include "vga_int.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] = {
- (uint8_t)~0xfc,
- (uint8_t)~0xc2,
- (uint8_t)~0xf0,
- (uint8_t)~0xc0,
- (uint8_t)~0xf1,
- (uint8_t)~0xff,
- (uint8_t)~0xff,
- (uint8_t)~0x00,
-};
-
-const uint8_t gr_mask[16] = {
- (uint8_t)~0xf0, /* 0x00 */
- (uint8_t)~0xf0, /* 0x01 */
- (uint8_t)~0xf0, /* 0x02 */
- (uint8_t)~0xe0, /* 0x03 */
- (uint8_t)~0xfc, /* 0x04 */
- (uint8_t)~0x84, /* 0x05 */
- (uint8_t)~0xf0, /* 0x06 */
- (uint8_t)~0xf0, /* 0x07 */
- (uint8_t)~0x00, /* 0x08 */
- (uint8_t)~0xff, /* 0x09 */
- (uint8_t)~0xff, /* 0x0a */
- (uint8_t)~0xff, /* 0x0b */
- (uint8_t)~0xff, /* 0x0c */
- (uint8_t)~0xff, /* 0x0d */
- (uint8_t)~0xff, /* 0x0e */
- (uint8_t)~0xff, /* 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 WORDS_BIGENDIAN
-#define PAT(x) cbswap_32(x)
-#else
-#define PAT(x) (x)
-#endif
-
-#ifdef WORDS_BIGENDIAN
-#define BIG 1
-#else
-#define BIG 0
-#endif
-
-#ifdef 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 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];
-
-VGAState *vga_state;
-int vga_io_memory;
-
-static void vga_screen_dump(void *opaque, const char *filename);
-
-static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
-{
- VGAState *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 */
- s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
- val = s->st01;
- 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;
-}
-
-static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
-{
- VGAState *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;
- 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];
- 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: /* veritcal display end */
- s->cr[s->cr_index] = val;
- break;
- default:
- s->cr[s->cr_index] = val;
- 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) {
- 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:
- 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->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%x] = 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%x]\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%x]\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%x] 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);
-
-static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
-{
- return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
-}
-
-static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
-{
- return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
-}
-
-static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
-{
- return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
-}
-
-static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
-{
- return (r << 16) | (g << 8) | b;
-}
-
-static inline unsigned int rgb_to_pixel32bgr(unsigned int r, unsigned int g, unsigned b)
-{
- return (b << 16) | (g << 8) | r;
-}
-
-#define DEPTH 8
-#include "vga_template.h"
-
-#define DEPTH 15
-#include "vga_template.h"
-
-#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_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_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++) {
- 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 start_addr, line_offset;
-#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;
- } 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);
- }
- *pline_offset = line_offset;
- *pstart_addr = start_addr;
-}
-
-/* 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 */
- line_compare = s->cr[0x18] |
- ((s->cr[0x07] & 0x10) << 4) |
- ((s->cr[0x09] & 0x40) << 3);
-
- 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 5
-
-static inline int get_depth_index(DisplayState *s)
-{
- switch(s->depth) {
- default:
- case 8:
- return 0;
- case 15:
- return 1;
- case 16:
- return 2;
- case 32:
- if (s->bgr)
- 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,
-};
-
-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,
-};
-
-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,
-};
-
-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,
-};
-
-/*
- * 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;
-
- full_update |= update_palette16(s);
- palette = s->last_palette;
-
- /* 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);
-
- /* 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 */
- x_incr = cw * ((s->ds->depth + 7) >> 3);
- 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;
- }
- 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_scr_width = width * cw;
- s->last_scr_height = height * cheight;
- dpy_resize(s->ds, s->last_scr_width, s->last_scr_height);
- s->last_width = width;
- s->last_height = height;
- s->last_ch = cheight;
- s->last_cw = cw;
- full_update = 1;
- }
- 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 = s->ds->data;
- linesize = s->ds->linesize;
- 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 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_line2d2_8,
- vga_draw_line2d2_16,
- vga_draw_line2d2_16,
- vga_draw_line2d2_32,
- vga_draw_line2d2_32,
-
- vga_draw_line4_8,
- vga_draw_line4_16,
- vga_draw_line4_16,
- vga_draw_line4_32,
- vga_draw_line4_32,
-
- vga_draw_line4d2_8,
- vga_draw_line4d2_16,
- vga_draw_line4d2_16,
- vga_draw_line4d2_32,
- vga_draw_line4d2_32,
-
- vga_draw_line8d2_8,
- vga_draw_line8d2_16,
- vga_draw_line8d2_16,
- vga_draw_line8d2_32,
- vga_draw_line8d2_32,
-
- vga_draw_line8_8,
- vga_draw_line8_16,
- vga_draw_line8_16,
- vga_draw_line8_32,
- vga_draw_line8_32,
-
- vga_draw_line15_8,
- vga_draw_line15_15,
- vga_draw_line15_16,
- vga_draw_line15_32,
- vga_draw_line15_32bgr,
-
- vga_draw_line16_8,
- vga_draw_line16_15,
- vga_draw_line16_16,
- vga_draw_line16_32,
- vga_draw_line16_32bgr,
-
- vga_draw_line24_8,
- vga_draw_line24_15,
- vga_draw_line24_16,
- vga_draw_line24_32,
- vga_draw_line24_32bgr,
-
- vga_draw_line32_8,
- vga_draw_line32_15,
- vga_draw_line32_16,
- vga_draw_line32_32,
- vga_draw_line32_32bgr,
-};
-
-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,
-};
-
-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);
- }
-}
-
-/*
- * graphic modes
- */
-static void vga_draw_graphic(VGAState *s, int full_update)
-{
- int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
- int width, height, shift_control, line_offset, page0, page1, bwidth;
- 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);
-
- 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) {
- full_update |= update_palette16(s);
- if (s->sr[0x01] & 8) {
- v = VGA_DRAW_LINE4D2;
- disp_width <<= 1;
- } else {
- v = VGA_DRAW_LINE4;
- }
- } else if (shift_control == 1) {
- full_update |= update_palette16(s);
- if (s->sr[0x01] & 8) {
- v = VGA_DRAW_LINE2D2;
- disp_width <<= 1;
- } else {
- v = VGA_DRAW_LINE2;
- }
- } else {
- switch(s->get_bpp(s)) {
- default:
- case 0:
- full_update |= update_palette256(s);
- v = VGA_DRAW_LINE8D2;
- break;
- case 8:
- full_update |= update_palette256(s);
- v = VGA_DRAW_LINE8;
- break;
- case 15:
- v = VGA_DRAW_LINE15;
- break;
- case 16:
- v = VGA_DRAW_LINE16;
- break;
- case 24:
- v = VGA_DRAW_LINE24;
- break;
- case 32:
- v = VGA_DRAW_LINE32;
- break;
- }
- }
- vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)];
-
- if (disp_width != s->last_width ||
- height != s->last_height) {
- dpy_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;
- full_update = 1;
- }
- if (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 * 4;
- y_start = -1;
- page_min = 0x7fffffff;
- page_max = -1;
- d = s->ds->data;
- linesize = s->ds->linesize;
- 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;
- 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 != -1) {
- 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;
- if (s->ds->depth == 8)
- val = s->rgb_to_pixel(0, 0, 0);
- else
- val = 0;
- w = s->last_scr_width * ((s->ds->depth + 7) >> 3);
- d = s->ds->data;
- for(i = 0; i < s->last_scr_height; i++) {
- memset(d, val, w);
- d += s->ds->linesize;
- }
- 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 = (VGAState *)opaque;
- int full_update, graphic_mode;
-
- if (s->ds->depth == 0) {
- /* nothing to do */
- } else {
- s->rgb_to_pixel =
- rgb_to_pixel_dup_table[get_depth_index(s->ds)];
-
- 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 = (VGAState *)opaque;
-
- s->last_width = -1;
- s->last_height = -1;
-}
-
-static void vga_reset(VGAState *s)
-{
- memset(s, 0, sizeof(VGAState));
- s->graphic_mode = -1; /* force full update */
-}
-
-static CPUReadMemoryFunc *vga_mem_read[3] = {
- vga_mem_readb,
- vga_mem_readw,
- vga_mem_readl,
-};
-
-static CPUWriteMemoryFunc *vga_mem_write[3] = {
- vga_mem_writeb,
- vga_mem_writew,
- vga_mem_writel,
-};
-
-static void vga_save(QEMUFile *f, void *opaque)
-{
- VGAState *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_be32s(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_8s(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_be32s(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
-}
-
-static int vga_load(QEMUFile *f, void *opaque, int version_id)
-{
- VGAState *s = opaque;
- int is_vbe, i;
-
- if (version_id != 1)
- 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);
- qemu_get_be32s(f, &s->ar_flip_flop);
- 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);
-
- qemu_get_be32s(f, &s->bank_offset);
- 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;
-}
-
-static void vga_map(PCIDevice *pci_dev, int region_num,
- uint32_t addr, uint32_t size, int type)
-{
- VGAState *s = vga_state;
- if (region_num == PCI_ROM_SLOT) {
- cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
- } else {
- cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
- }
-}
-
-void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
- unsigned long vga_ram_offset, 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;
- }
-
- vga_reset(s);
-
- s->vram_ptr = vga_ram_base;
- s->vram_offset = vga_ram_offset;
- s->vram_size = vga_ram_size;
- s->ds = ds;
- s->get_bpp = vga_get_bpp;
- s->get_offsets = vga_get_offsets;
- s->get_resolution = vga_get_resolution;
- graphic_console_init(s->ds, vga_update_display, vga_invalidate_display,
- vga_screen_dump, s);
- /* XXX: currently needed for display */
- vga_state = s;
-}
-
-
-int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
- unsigned long vga_ram_offset, int vga_ram_size,
- unsigned long vga_bios_offset, int vga_bios_size)
-{
- VGAState *s;
-
- s = qemu_mallocz(sizeof(VGAState));
- if (!s)
- return -1;
-
- vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size);
-
- register_savevm("vga", 0, 1, vga_save, vga_load, 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
- s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
- s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
-#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(0, vga_mem_read, vga_mem_write, s);
- cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
- vga_io_memory);
-
- if (bus) {
- PCIDevice *d;
- uint8_t *pci_conf;
-
- d = pci_register_device(bus, "VGA",
- sizeof(PCIDevice),
- -1, NULL, NULL);
- pci_conf = d->config;
- pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID)
- pci_conf[0x01] = 0x12;
- pci_conf[0x02] = 0x11;
- pci_conf[0x03] = 0x11;
- pci_conf[0x0a] = 0x00; // VGA controller
- pci_conf[0x0b] = 0x03;
- pci_conf[0x0e] = 0x00; // header_type
-
- /* XXX: vga_ram_size must be a power of two */
- pci_register_io_region(d, 0, vga_ram_size,
- PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
- if (vga_bios_size != 0) {
- unsigned int bios_total_size;
- s->bios_offset = vga_bios_offset;
- s->bios_size = vga_bios_size;
- /* must be a power of two */
- bios_total_size = 1;
- while (bios_total_size < vga_bios_size)
- bios_total_size <<= 1;
- pci_register_io_region(d, PCI_ROM_SLOT, bios_total_size,
- PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
- }
- } else {
-#ifdef CONFIG_BOCHS_VBE
- /* XXX: use optimized standard vga accesses */
- cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
- vga_ram_size, vga_ram_offset);
-#endif
- }
- return 0;
-}
-
-/********************************************************/
-/* vga screen dump */
-
-static int vga_save_w, vga_save_h;
-
-static void vga_save_dpy_update(DisplayState *s,
- int x, int y, int w, int h)
-{
-}
-
-static void vga_save_dpy_resize(DisplayState *s, int w, int h)
-{
- s->linesize = w * 4;
- s->data = qemu_malloc(h * s->linesize);
- vga_save_w = w;
- vga_save_h = h;
-}
-
-static void vga_save_dpy_refresh(DisplayState *s)
-{
-}
-
-static int ppm_save(const char *filename, uint8_t *data,
- int w, int h, int linesize)
-{
- FILE *f;
- uint8_t *d, *d1;
- unsigned int v;
- int y, x;
-
- f = fopen(filename, "wb");
- if (!f)
- return -1;
- fprintf(f, "P6\n%d %d\n%d\n",
- w, h, 255);
- d1 = data;
- for(y = 0; y < h; y++) {
- d = d1;
- for(x = 0; x < w; x++) {
- v = *(uint32_t *)d;
- fputc((v >> 16) & 0xff, f);
- fputc((v >> 8) & 0xff, f);
- fputc((v) & 0xff, f);
- d += 4;
- }
- d1 += linesize;
- }
- fclose(f);
- return 0;
-}
-
-/* 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 = (VGAState *)opaque;
- DisplayState *saved_ds, ds1, *ds = &ds1;
-
- /* XXX: this is a little hackish */
- vga_invalidate_display(s);
- saved_ds = s->ds;
-
- memset(ds, 0, sizeof(DisplayState));
- ds->dpy_update = vga_save_dpy_update;
- ds->dpy_resize = vga_save_dpy_resize;
- ds->dpy_refresh = vga_save_dpy_refresh;
- ds->depth = 32;
-
- s->ds = ds;
- s->graphic_mode = -1;
- vga_update_display(s);
-
- if (ds->data) {
- ppm_save(filename, ds->data, vga_save_w, vga_save_h,
- s->ds->linesize);
- qemu_free(ds->data);
- }
- s->ds = saved_ds;
-}
generated by cgit v1.1 at 2024-05-20 20:57:51 +0000