hw: move display devices to hw/display/, configure via default-configs/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 2457 deletions

diff --git a/hw/vga.c b/hw/vga.c
deleted file mode 100644
index dc31fd574c..0000000000
--- a/hw/vga.c
+++ /dev/null
@@ -1,2457 +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 "hw/hw.h"
-#include "hw/vga.h"
-#include "ui/console.h"
-#include "hw/i386/pc.h"
-#include "hw/pci/pci.h"
-#include "hw/vga_int.h"
-#include "ui/pixel_ops.h"
-#include "qemu/timer.h"
-#include "hw/xen/xen.h"
-#include "trace.h"
-
-//#define DEBUG_VGA
-//#define DEBUG_VGA_MEM
-//#define DEBUG_VGA_REG
-
-//#define DEBUG_BOCHS_VBE
-
-/* 16 state changes per vertical frame @60 Hz */
-#define VGA_TEXT_CURSOR_PERIOD_MS       (1000 * 2 * 16 / 60)
-
-/*
- * Video Graphics Array (VGA)
- *
- * Chipset docs for original IBM VGA:
- * http://www.mcamafia.de/pdf/ibm_vgaxga_trm2.pdf
- *
- * FreeVGA site:
- * http://www.osdever.net/FreeVGA/home.htm
- *
- * Standard VGA features and Bochs VBE extensions are implemented.
- */
-
-/* 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];
-
-static void vga_screen_dump(void *opaque, const char *filename, bool cswitch,
-                            Error **errp);
-
-static void vga_update_memory_access(VGACommonState *s)
-{
-    MemoryRegion *region, *old_region = s->chain4_alias;
-    hwaddr base, offset, size;
-
-    s->chain4_alias = NULL;
-
-    if ((s->sr[VGA_SEQ_PLANE_WRITE] & VGA_SR02_ALL_PLANES) ==
-        VGA_SR02_ALL_PLANES && s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
-        offset = 0;
-        switch ((s->gr[VGA_GFX_MISC] >> 2) & 3) {
-        case 0:
-            base = 0xa0000;
-            size = 0x20000;
-            break;
-        case 1:
-            base = 0xa0000;
-            size = 0x10000;
-            offset = s->bank_offset;
-            break;
-        case 2:
-            base = 0xb0000;
-            size = 0x8000;
-            break;
-        case 3:
-        default:
-            base = 0xb8000;
-            size = 0x8000;
-            break;
-        }
-        base += isa_mem_base;
-        region = g_malloc(sizeof(*region));
-        memory_region_init_alias(region, "vga.chain4", &s->vram, offset, size);
-        memory_region_add_subregion_overlap(s->legacy_address_space, base,
-                                            region, 2);
-        s->chain4_alias = region;
-    }
-    if (old_region) {
-        memory_region_del_subregion(s->legacy_address_space, old_region);
-        memory_region_destroy(old_region);
-        g_free(old_region);
-        s->plane_updated = 0xf;
-    }
-}
-
-static void vga_dumb_update_retrace_info(VGACommonState *s)
-{
-    (void) s;
-}
-
-static void vga_precise_update_retrace_info(VGACommonState *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 dots;
-#if 0
-    int div2, sldiv2;
-#endif
-    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[VGA_CRTC_H_TOTAL] + 5;
-    hretr_start_char = s->cr[VGA_CRTC_H_SYNC_START];
-    hretr_skew_chars = (s->cr[VGA_CRTC_H_SYNC_END] >> 5) & 3;
-    hretr_end_char = s->cr[VGA_CRTC_H_SYNC_END] & 0x1f;
-
-    vtotal_lines = (s->cr[VGA_CRTC_V_TOTAL] |
-                    (((s->cr[VGA_CRTC_OVERFLOW] & 1) |
-                      ((s->cr[VGA_CRTC_OVERFLOW] >> 4) & 2)) << 8)) + 2;
-    vretr_start_line = s->cr[VGA_CRTC_V_SYNC_START] |
-        ((((s->cr[VGA_CRTC_OVERFLOW] >> 2) & 1) |
-          ((s->cr[VGA_CRTC_OVERFLOW] >> 6) & 2)) << 8);
-    vretr_end_line = s->cr[VGA_CRTC_V_SYNC_END] & 0xf;
-
-    clocking_mode = (s->sr[VGA_SEQ_CLOCK_MODE] >> 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 = get_ticks_per_sec() / (r->total_chars * r->freq);
-    } else {
-        r->ticks_per_char = get_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
-    div2 = (s->cr[VGA_CRTC_MODE] >> 2) & 1;
-    sldiv2 = (s->cr[VGA_CRTC_MODE] >> 3) & 1;
-    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 = %" PRId64 "\n"
-        "\n",
-        (double) get_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(VGACommonState *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_ns(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(VGACommonState *s)
-{
-    return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
-}
-
-int vga_ioport_invalid(VGACommonState *s, uint32_t addr)
-{
-    if (s->msr & VGA_MIS_COLOR) {
-        /* Color */
-        return (addr >= 0x3b0 && addr <= 0x3bf);
-    } else {
-        /* Monochrome */
-        return (addr >= 0x3d0 && addr <= 0x3df);
-    }
-}
-
-uint32_t vga_ioport_read(void *opaque, uint32_t addr)
-{
-    VGACommonState *s = opaque;
-    int val, index;
-
-    qemu_flush_coalesced_mmio_buffer();
-
-    if (vga_ioport_invalid(s, addr)) {
-        val = 0xff;
-    } else {
-        switch(addr) {
-        case VGA_ATT_W:
-            if (s->ar_flip_flop == 0) {
-                val = s->ar_index;
-            } else {
-                val = 0;
-            }
-            break;
-        case VGA_ATT_R:
-            index = s->ar_index & 0x1f;
-            if (index < VGA_ATT_C) {
-                val = s->ar[index];
-            } else {
-                val = 0;
-            }
-            break;
-        case VGA_MIS_W:
-            val = s->st00;
-            break;
-        case VGA_SEQ_I:
-            val = s->sr_index;
-            break;
-        case VGA_SEQ_D:
-            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 VGA_PEL_IR:
-            val = s->dac_state;
-            break;
-        case VGA_PEL_IW:
-            val = s->dac_write_index;
-            break;
-        case VGA_PEL_D:
-            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 VGA_FTC_R:
-            val = s->fcr;
-            break;
-        case VGA_MIS_R:
-            val = s->msr;
-            break;
-        case VGA_GFX_I:
-            val = s->gr_index;
-            break;
-        case VGA_GFX_D:
-            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 VGA_CRT_IM:
-        case VGA_CRT_IC:
-            val = s->cr_index;
-            break;
-        case VGA_CRT_DM:
-        case VGA_CRT_DC:
-            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 VGA_IS1_RM:
-        case VGA_IS1_RC:
-            /* 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;
-
-    qemu_flush_coalesced_mmio_buffer();
-
-    /* check port range access depending on color/monochrome mode */
-    if (vga_ioport_invalid(s, addr)) {
-        return;
-    }
-#ifdef DEBUG_VGA
-    printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
-#endif
-
-    switch(addr) {
-    case VGA_ATT_W:
-        if (s->ar_flip_flop == 0) {
-            val &= 0x3f;
-            s->ar_index = val;
-        } else {
-            index = s->ar_index & 0x1f;
-            switch(index) {
-            case VGA_ATC_PALETTE0 ... VGA_ATC_PALETTEF:
-                s->ar[index] = val & 0x3f;
-                break;
-            case VGA_ATC_MODE:
-                s->ar[index] = val & ~0x10;
-                break;
-            case VGA_ATC_OVERSCAN:
-                s->ar[index] = val;
-                break;
-            case VGA_ATC_PLANE_ENABLE:
-                s->ar[index] = val & ~0xc0;
-                break;
-            case VGA_ATC_PEL:
-                s->ar[index] = val & ~0xf0;
-                break;
-            case VGA_ATC_COLOR_PAGE:
-                s->ar[index] = val & ~0xf0;
-                break;
-            default:
-                break;
-            }
-        }
-        s->ar_flip_flop ^= 1;
-        break;
-    case VGA_MIS_W:
-        s->msr = val & ~0x10;
-        s->update_retrace_info(s);
-        break;
-    case VGA_SEQ_I:
-        s->sr_index = val & 7;
-        break;
-    case VGA_SEQ_D:
-#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 == VGA_SEQ_CLOCK_MODE) {
-            s->update_retrace_info(s);
-        }
-        vga_update_memory_access(s);
-        break;
-    case VGA_PEL_IR:
-        s->dac_read_index = val;
-        s->dac_sub_index = 0;
-        s->dac_state = 3;
-        break;
-    case VGA_PEL_IW:
-        s->dac_write_index = val;
-        s->dac_sub_index = 0;
-        s->dac_state = 0;
-        break;
-    case VGA_PEL_D:
-        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 VGA_GFX_I:
-        s->gr_index = val & 0x0f;
-        break;
-    case VGA_GFX_D:
-#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];
-        vga_update_memory_access(s);
-        break;
-    case VGA_CRT_IM:
-    case VGA_CRT_IC:
-        s->cr_index = val;
-        break;
-    case VGA_CRT_DM:
-    case VGA_CRT_DC:
-#ifdef DEBUG_VGA_REG
-        printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
-#endif
-        /* handle CR0-7 protection */
-        if ((s->cr[VGA_CRTC_V_SYNC_END] & VGA_CR11_LOCK_CR0_CR7) &&
-            s->cr_index <= VGA_CRTC_OVERFLOW) {
-            /* can always write bit 4 of CR7 */
-            if (s->cr_index == VGA_CRTC_OVERFLOW) {
-                s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x10) |
-                    (val & 0x10);
-            }
-            return;
-        }
-        s->cr[s->cr_index] = val;
-
-        switch(s->cr_index) {
-        case VGA_CRTC_H_TOTAL:
-        case VGA_CRTC_H_SYNC_START:
-        case VGA_CRTC_H_SYNC_END:
-        case VGA_CRTC_V_TOTAL:
-        case VGA_CRTC_OVERFLOW:
-        case VGA_CRTC_V_SYNC_END:
-        case VGA_CRTC_MODE:
-            s->update_retrace_info(s);
-            break;
-        }
-        break;
-    case VGA_IS1_RM:
-    case VGA_IS1_RC:
-        s->fcr = val & 0x10;
-        break;
-    }
-}
-
-static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
-{
-    VGACommonState *s = opaque;
-    uint32_t val;
-    val = s->vbe_index;
-    return val;
-}
-
-uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
-{
-    VGACommonState *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 if (s->vbe_index == VBE_DISPI_INDEX_VIDEO_MEMORY_64K) {
-        val = s->vram_size / (64 * 1024);
-    } else {
-        val = 0;
-    }
-#ifdef DEBUG_BOCHS_VBE
-    printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
-#endif
-    return val;
-}
-
-void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
-{
-    VGACommonState *s = opaque;
-    s->vbe_index = val;
-}
-
-void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
-{
-    VGACommonState *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);
-            vga_update_memory_access(s);
-            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) */
-                /* graphic mode + memory map 1 */
-                s->gr[VGA_GFX_MISC] = (s->gr[VGA_GFX_MISC] & ~0x0c) | 0x04 |
-                    VGA_GR06_GRAPHICS_MODE;
-                s->cr[VGA_CRTC_MODE] |= 3; /* no CGA modes */
-                s->cr[VGA_CRTC_OFFSET] = s->vbe_line_offset >> 3;
-                /* width */
-                s->cr[VGA_CRTC_H_DISP] =
-                    (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[VGA_CRTC_V_DISP_END] = h;
-                s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x42) |
-                    ((h >> 7) & 0x02) | ((h >> 3) & 0x40);
-                /* line compare to 1023 */
-                s->cr[VGA_CRTC_LINE_COMPARE] = 0xff;
-                s->cr[VGA_CRTC_OVERFLOW] |= 0x10;
-                s->cr[VGA_CRTC_MAX_SCAN] |= 0x40;
-
-                if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) {
-                    shift_control = 0;
-                    s->sr[VGA_SEQ_CLOCK_MODE] &= ~8; /* no double line */
-                } else {
-                    shift_control = 2;
-                    /* set chain 4 mode */
-                    s->sr[VGA_SEQ_MEMORY_MODE] |= VGA_SR04_CHN_4M;
-                    /* activate all planes */
-                    s->sr[VGA_SEQ_PLANE_WRITE] |= VGA_SR02_ALL_PLANES;
-                }
-                s->gr[VGA_GFX_MODE] = (s->gr[VGA_GFX_MODE] & ~0x60) |
-                    (shift_control << 5);
-                s->cr[VGA_CRTC_MAX_SCAN] &= ~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;
-            vga_update_memory_access(s);
-            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;
-        }
-    }
-}
-
-/* called for accesses between 0xa0000 and 0xc0000 */
-uint32_t vga_mem_readb(VGACommonState *s, hwaddr addr)
-{
-    int memory_map_mode, plane;
-    uint32_t ret;
-
-    /* convert to VGA memory offset */
-    memory_map_mode = (s->gr[VGA_GFX_MISC] >> 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[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
-        /* chain 4 mode : simplest access */
-        ret = s->vram_ptr[addr];
-    } else if (s->gr[VGA_GFX_MODE] & 0x10) {
-        /* odd/even mode (aka text mode mapping) */
-        plane = (s->gr[VGA_GFX_PLANE_READ] & 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[VGA_GFX_MODE] & 0x08)) {
-            /* read mode 0 */
-            plane = s->gr[VGA_GFX_PLANE_READ];
-            ret = GET_PLANE(s->latch, plane);
-        } else {
-            /* read mode 1 */
-            ret = (s->latch ^ mask16[s->gr[VGA_GFX_COMPARE_VALUE]]) &
-                mask16[s->gr[VGA_GFX_COMPARE_MASK]];
-            ret |= ret >> 16;
-            ret |= ret >> 8;
-            ret = (~ret) & 0xff;
-        }
-    }
-    return ret;
-}
-
-/* called for accesses between 0xa0000 and 0xc0000 */
-void vga_mem_writeb(VGACommonState *s, hwaddr addr, uint32_t val)
-{
-    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[VGA_GFX_MISC] >> 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[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
-        /* chain 4 mode : simplest access */
-        plane = addr & 3;
-        mask = (1 << plane);
-        if (s->sr[VGA_SEQ_PLANE_WRITE] & 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 */
-            memory_region_set_dirty(&s->vram, addr, 1);
-        }
-    } else if (s->gr[VGA_GFX_MODE] & 0x10) {
-        /* odd/even mode (aka text mode mapping) */
-        plane = (s->gr[VGA_GFX_PLANE_READ] & 2) | (addr & 1);
-        mask = (1 << plane);
-        if (s->sr[VGA_SEQ_PLANE_WRITE] & 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 */
-            memory_region_set_dirty(&s->vram, addr, 1);
-        }
-    } else {
-        /* standard VGA latched access */
-        write_mode = s->gr[VGA_GFX_MODE] & 3;
-        switch(write_mode) {
-        default:
-        case 0:
-            /* rotate */
-            b = s->gr[VGA_GFX_DATA_ROTATE] & 7;
-            val = ((val >> b) | (val << (8 - b))) & 0xff;
-            val |= val << 8;
-            val |= val << 16;
-
-            /* apply set/reset mask */
-            set_mask = mask16[s->gr[VGA_GFX_SR_ENABLE]];
-            val = (val & ~set_mask) |
-                (mask16[s->gr[VGA_GFX_SR_VALUE]] & set_mask);
-            bit_mask = s->gr[VGA_GFX_BIT_MASK];
-            break;
-        case 1:
-            val = s->latch;
-            goto do_write;
-        case 2:
-            val = mask16[val & 0x0f];
-            bit_mask = s->gr[VGA_GFX_BIT_MASK];
-            break;
-        case 3:
-            /* rotate */
-            b = s->gr[VGA_GFX_DATA_ROTATE] & 7;
-            val = (val >> b) | (val << (8 - b));
-
-            bit_mask = s->gr[VGA_GFX_BIT_MASK] & val;
-            val = mask16[s->gr[VGA_GFX_SR_VALUE]];
-            break;
-        }
-
-        /* apply logical operation */
-        func_select = s->gr[VGA_GFX_DATA_ROTATE] >> 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[VGA_SEQ_PLANE_WRITE];
-        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
-        memory_region_set_dirty(&s->vram, addr << 2, sizeof(uint32_t));
-    }
-}
-
-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(VGACommonState *s1, uint8_t *d,
-                                const uint8_t *s, int width);
-
-#define DEPTH 8
-#include "hw/vga_template.h"
-
-#define DEPTH 15
-#include "hw/vga_template.h"
-
-#define BGR_FORMAT
-#define DEPTH 15
-#include "hw/vga_template.h"
-
-#define DEPTH 16
-#include "hw/vga_template.h"
-
-#define BGR_FORMAT
-#define DEPTH 16
-#include "hw/vga_template.h"
-
-#define DEPTH 32
-#include "hw/vga_template.h"
-
-#define BGR_FORMAT
-#define DEPTH 32
-#include "hw/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(VGACommonState *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[VGA_ATC_MODE] & 0x80) {
-            v = ((s->ar[VGA_ATC_COLOR_PAGE] & 0xf) << 4) | (v & 0xf);
-        } else {
-            v = ((s->ar[VGA_ATC_COLOR_PAGE] & 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(VGACommonState *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(VGACommonState *s,
-                            uint32_t *pline_offset,
-                            uint32_t *pstart_addr,
-                            uint32_t *pline_compare)
-{
-    uint32_t start_addr, line_offset, line_compare;
-
-    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 {
-        /* compute line_offset in bytes */
-        line_offset = s->cr[VGA_CRTC_OFFSET];
-        line_offset <<= 3;
-
-        /* starting address */
-        start_addr = s->cr[VGA_CRTC_START_LO] |
-            (s->cr[VGA_CRTC_START_HI] << 8);
-
-        /* line compare */
-        line_compare = s->cr[VGA_CRTC_LINE_COMPARE] |
-            ((s->cr[VGA_CRTC_OVERFLOW] & 0x10) << 4) |
-            ((s->cr[VGA_CRTC_MAX_SCAN] & 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(VGACommonState *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(DisplaySurface *s)
-{
-    switch (surface_bits_per_pixel(s)) {
-    default:
-    case 8:
-        return 0;
-    case 15:
-        return 1;
-    case 16:
-        return 2;
-    case 32:
-        if (is_surface_bgr(s)) {
-            return 4;
-        } else {
-            return 3;
-        }
-    }
-}
-
-static vga_draw_glyph8_func * const 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 * const 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 * const 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(VGACommonState *s, int *pwidth, int *pheight,
-                                    int *pcwidth, int *pcheight)
-{
-    int width, cwidth, height, cheight;
-
-    /* total width & height */
-    cheight = (s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1;
-    cwidth = 8;
-    if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) {
-        cwidth = 9;
-    }
-    if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) {
-        cwidth = 16; /* NOTE: no 18 pixel wide */
-    }
-    width = (s->cr[VGA_CRTC_H_DISP] + 1);
-    if (s->cr[VGA_CRTC_V_TOTAL] == 100) {
-        /* ugly hack for CGA 160x100x16 - explain me the logic */
-        height = 100;
-    } else {
-        height = s->cr[VGA_CRTC_V_DISP_END] |
-            ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) |
-            ((s->cr[VGA_CRTC_OVERFLOW] & 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 * const 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(VGACommonState *s, int full_update)
-{
-    DisplaySurface *surface = qemu_console_surface(s->con);
-    int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
-    int cx_min, cx_max, linesize, x_incr, line, line1;
-    uint32_t offset, fgcol, bgcol, v, cursor_offset;
-    uint8_t *d1, *d, *src, *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;
-    int64_t now = qemu_get_clock_ms(vm_clock);
-
-    /* compute font data address (in plane 2) */
-    v = s->sr[VGA_SEQ_CHARACTER_MAP];
-    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) || s->chain4_alias) {
-        /* 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;
-
-    vga_get_text_resolution(s, &width, &height, &cw, &cheight);
-    if ((height * width) <= 1) {
-        /* better than nothing: exit if transient size is too small */
-        return;
-    }
-    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->con, s->last_scr_width, s->last_scr_height);
-        surface = qemu_console_surface(s->con);
-        dpy_text_resize(s->con, width, 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(surface)];
-    full_update |= update_palette16(s);
-    palette = s->last_palette;
-    x_incr = cw * surface_bytes_per_pixel(surface);
-
-    if (full_update) {
-        s->full_update_text = 1;
-    }
-    if (s->full_update_gfx) {
-        s->full_update_gfx = 0;
-        full_update |= 1;
-    }
-
-    cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) |
-                     s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr;
-    if (cursor_offset != s->cursor_offset ||
-        s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start ||
-        s->cr[VGA_CRTC_CURSOR_END] != 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[VGA_CRTC_CURSOR_START];
-        s->cursor_end = s->cr[VGA_CRTC_CURSOR_END];
-    }
-    cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
-    if (now >= s->cursor_blink_time) {
-        s->cursor_blink_time = now + VGA_TEXT_CURSOR_PERIOD_MS / 2;
-        s->cursor_visible_phase = !s->cursor_visible_phase;
-    }
-
-    depth_index = get_depth_index(surface);
-    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 = surface_data(surface);
-    linesize = surface_stride(surface);
-    ch_attr_ptr = s->last_ch_attr;
-    line = 0;
-    offset = s->start_addr * 4;
-    for(cy = 0; cy < height; cy++) {
-        d1 = dest;
-        src = s->vram_ptr + offset;
-        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 || src == cursor_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[VGA_ATC_MODE] & 0x04)) {
-                        dup9 = 1;
-                    }
-                    vga_draw_glyph9(d1, linesize,
-                                    font_ptr, cheight, fgcol, bgcol, dup9);
-                }
-                if (src == cursor_ptr &&
-                    !(s->cr[VGA_CRTC_CURSOR_START] & 0x20) &&
-                    s->cursor_visible_phase) {
-                    int line_start, line_last, h;
-                    /* draw the cursor */
-                    line_start = s->cr[VGA_CRTC_CURSOR_START] & 0x1f;
-                    line_last = s->cr[VGA_CRTC_CURSOR_END] & 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_gfx_update(s->con, cx_min * cw, cy * cheight,
-                           (cx_max - cx_min + 1) * cw, cheight);
-        }
-        dest += linesize * cheight;
-        line1 = line + cheight;
-        offset += line_offset;
-        if (line < s->line_compare && line1 >= s->line_compare) {
-            offset = 0;
-        }
-        line = line1;
-    }
-}
-
-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 * const 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(VGACommonState *s)
-{
-    int ret;
-
-    if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
-        ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
-    } else {
-        ret = 0;
-    }
-    return ret;
-}
-
-static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
-{
-    int width, height;
-
-    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 {
-        width = (s->cr[VGA_CRTC_H_DISP] + 1) * 8;
-        height = s->cr[VGA_CRTC_V_DISP_END] |
-            ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) |
-            ((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3);
-        height = (height + 1);
-    }
-    *pwidth = width;
-    *pheight = height;
-}
-
-void vga_invalidate_scanlines(VGACommonState *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);
-    }
-}
-
-void vga_sync_dirty_bitmap(VGACommonState *s)
-{
-    memory_region_sync_dirty_bitmap(&s->vram);
-}
-
-void vga_dirty_log_start(VGACommonState *s)
-{
-    memory_region_set_log(&s->vram, true, DIRTY_MEMORY_VGA);
-}
-
-void vga_dirty_log_stop(VGACommonState *s)
-{
-    memory_region_set_log(&s->vram, false, DIRTY_MEMORY_VGA);
-}
-
-/*
- * graphic modes
- */
-static void vga_draw_graphic(VGACommonState *s, int full_update)
-{
-    DisplaySurface *surface = qemu_console_surface(s->con);
-    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;
-#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
-    static const bool byteswap = false;
-#else
-    static const bool byteswap = true;
-#endif
-
-    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[VGA_GFX_MODE] >> 5) & 3;
-    double_scan = (s->cr[VGA_CRTC_MAX_SCAN] >> 7);
-    if (shift_control != 1) {
-        multi_scan = (((s->cr[VGA_CRTC_MAX_SCAN] & 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[VGA_SEQ_CLOCK_MODE] & 8) {
-            disp_width <<= 1;
-        }
-    } else if (shift_control == 1) {
-        if (s->sr[VGA_SEQ_CLOCK_MODE] & 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 (depth == 32 || (depth == 16 && !byteswap)) {
-            surface = qemu_create_displaysurface_from(disp_width,
-                    height, depth, s->line_offset,
-                    s->vram_ptr + (s->start_addr * 4), byteswap);
-            dpy_gfx_replace_surface(s->con, surface);
-        } else {
-            qemu_console_resize(s->con, disp_width, height);
-            surface = qemu_console_surface(s->con);
-        }
-        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(surface) &&
-               (full_update || surface_data(surface) != s->vram_ptr
-                + (s->start_addr * 4))) {
-        DisplaySurface *surface;
-        surface = qemu_create_displaysurface_from(disp_width,
-                height, depth, s->line_offset,
-                s->vram_ptr + (s->start_addr * 4), byteswap);
-        dpy_gfx_replace_surface(s->con, surface);
-    }
-
-    s->rgb_to_pixel =
-        rgb_to_pixel_dup_table[get_depth_index(surface)];
-
-    if (shift_control == 0) {
-        full_update |= update_palette16(s);
-        if (s->sr[VGA_SEQ_CLOCK_MODE] & 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[VGA_SEQ_CLOCK_MODE] & 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(surface)];
-
-    if (!is_buffer_shared(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[VGA_CRTC_MODE],
-           s->line_compare, s->sr[VGA_SEQ_CLOCK_MODE]);
-#endif
-    addr1 = (s->start_addr * 4);
-    bwidth = (width * bits + 7) / 8;
-    y_start = -1;
-    page_min = -1;
-    page_max = 0;
-    d = surface_data(surface);
-    linesize = surface_stride(surface);
-    y1 = 0;
-    for(y = 0; y < height; y++) {
-        addr = addr1;
-        if (!(s->cr[VGA_CRTC_MODE] & 1)) {
-            int shift;
-            /* CGA compatibility handling */
-            shift = 14 + ((s->cr[VGA_CRTC_MODE] >> 6) & 1);
-            addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift);
-        }
-        if (!(s->cr[VGA_CRTC_MODE] & 2)) {
-            addr = (addr & ~0x8000) | ((y1 & 2) << 14);
-        }
-        update = full_update;
-        page0 = addr;
-        page1 = addr + bwidth - 1;
-        update |= memory_region_get_dirty(&s->vram, page0, page1 - page0,
-                                          DIRTY_MEMORY_VGA);
-        /* 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(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_gfx_update(s->con, 0, y_start,
-                               disp_width, y - y_start);
-                y_start = -1;
-            }
-        }
-        if (!multi_run) {
-            mask = (s->cr[VGA_CRTC_MODE] & 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_gfx_update(s->con, 0, y_start,
-                       disp_width, y - y_start);
-    }
-    /* reset modified pages */
-    if (page_max >= page_min) {
-        memory_region_reset_dirty(&s->vram,
-                                  page_min,
-                                  page_max - page_min,
-                                  DIRTY_MEMORY_VGA);
-    }
-    memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);
-}
-
-static void vga_draw_blank(VGACommonState *s, int full_update)
-{
-    DisplaySurface *surface = qemu_console_surface(s->con);
-    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(surface)];
-    if (surface_bits_per_pixel(surface) == 8) {
-        val = s->rgb_to_pixel(0, 0, 0);
-    } else {
-        val = 0;
-    }
-    w = s->last_scr_width * surface_bytes_per_pixel(surface);
-    d = surface_data(surface);
-    for(i = 0; i < s->last_scr_height; i++) {
-        memset(d, val, w);
-        d += surface_stride(surface);
-    }
-    dpy_gfx_update(s->con, 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)
-{
-    VGACommonState *s = opaque;
-    DisplaySurface *surface = qemu_console_surface(s->con);
-    int full_update, graphic_mode;
-
-    qemu_flush_coalesced_mmio_buffer();
-
-    if (surface_bits_per_pixel(surface) == 0) {
-        /* nothing to do */
-    } else {
-        full_update = 0;
-        if (!(s->ar_index & 0x20)) {
-            graphic_mode = GMODE_BLANK;
-        } else {
-            graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE;
-        }
-        if (graphic_mode != s->graphic_mode) {
-            s->graphic_mode = graphic_mode;
-            s->cursor_blink_time = qemu_get_clock_ms(vm_clock);
-            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)
-{
-    VGACommonState *s = opaque;
-
-    s->last_width = -1;
-    s->last_height = -1;
-}
-
-void vga_common_reset(VGACommonState *s)
-{
-    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;
-    s->vbe_index = 0;
-    memset(s->vbe_regs, '\0', sizeof(s->vbe_regs));
-    s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID5;
-    s->vbe_start_addr = 0;
-    s->vbe_line_offset = 0;
-    s->vbe_bank_mask = (s->vram_size >> 16) - 1;
-    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;
-    }
-    vga_update_memory_access(s);
-}
-
-static void vga_reset(void *opaque)
-{
-    VGACommonState *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)
-{
-    VGACommonState *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;
-
-    qemu_flush_coalesced_mmio_buffer();
-
-    if (!(s->ar_index & 0x20)) {
-        graphic_mode = GMODE_BLANK;
-    } else {
-        graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE;
-    }
-    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[VGA_CRTC_MAX_SCAN] & 0x1f) + 1;
-        cw = 8;
-        if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) {
-            cw = 9;
-        }
-        if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) {
-            cw = 16; /* NOTE: no 18 pixel wide */
-        }
-        width = (s->cr[VGA_CRTC_H_DISP] + 1);
-        if (s->cr[VGA_CRTC_V_TOTAL] == 100) {
-            /* ugly hack for CGA 160x100x16 - explain me the logic */
-            height = 100;
-        } else {
-            height = s->cr[VGA_CRTC_V_DISP_END] |
-                ((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) |
-                ((s->cr[VGA_CRTC_OVERFLOW] & 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;
-            qemu_console_resize(s->con, s->last_scr_width, s->last_scr_height);
-            dpy_text_resize(s->con, width, height);
-            s->last_depth = 0;
-            s->last_width = width;
-            s->last_height = height;
-            s->last_ch = cheight;
-            s->last_cw = cw;
-            full_update = 1;
-        }
-
-        if (full_update) {
-            s->full_update_gfx = 1;
-        }
-        if (s->full_update_text) {
-            s->full_update_text = 0;
-            full_update |= 1;
-        }
-
-        /* Update "hardware" cursor */
-        cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) |
-                         s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr;
-        if (cursor_offset != s->cursor_offset ||
-            s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start ||
-            s->cr[VGA_CRTC_CURSOR_END] != s->cursor_end || full_update) {
-            cursor_visible = !(s->cr[VGA_CRTC_CURSOR_START] & 0x20);
-            if (cursor_visible && cursor_offset < size && cursor_offset >= 0)
-                dpy_text_cursor(s->con,
-                                TEXTMODE_X(cursor_offset),
-                                TEXTMODE_Y(cursor_offset));
-            else
-                dpy_text_cursor(s->con, -1, -1);
-            s->cursor_offset = cursor_offset;
-            s->cursor_start = s->cr[VGA_CRTC_CURSOR_START];
-            s->cursor_end = s->cr[VGA_CRTC_CURSOR_END];
-        }
-
-        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(le32_to_cpu(*src)));
-
-            dpy_text_update(s->con, 0, 0, width, height);
-        } else {
-            c_max = 0;
-
-            for (i = 0; i < size; src ++, dst ++, i ++) {
-                console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
-                if (*dst != val) {
-                    *dst = val;
-                    c_max = i;
-                    break;
-                }
-            }
-            c_min = i;
-            for (; i < size; src ++, dst ++, i ++) {
-                console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
-                if (*dst != val) {
-                    *dst = val;
-                    c_max = i;
-                }
-            }
-
-            if (c_min <= c_max) {
-                i = TEXTMODE_Y(c_min);
-                dpy_text_update(s->con, 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_text_cursor(s->con, -1, -1);
-    dpy_text_resize(s->con, s->last_width, height);
-
-    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_text_update(s->con, 0, 0, s->last_width, height);
-}
-
-static uint64_t vga_mem_read(void *opaque, hwaddr addr,
-                             unsigned size)
-{
-    VGACommonState *s = opaque;
-
-    return vga_mem_readb(s, addr);
-}
-
-static void vga_mem_write(void *opaque, hwaddr addr,
-                          uint64_t data, unsigned size)
-{
-    VGACommonState *s = opaque;
-
-    return vga_mem_writeb(s, addr, data);
-}
-
-const MemoryRegionOps vga_mem_ops = {
-    .read = vga_mem_read,
-    .write = vga_mem_write,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-    .impl = {
-        .min_access_size = 1,
-        .max_access_size = 1,
-    },
-};
-
-static int vga_common_post_load(void *opaque, int version_id)
-{
-    VGACommonState *s = opaque;
-
-    /* force refresh */
-    s->graphic_mode = -1;
-    return 0;
-}
-
-const VMStateDescription vmstate_vga_common = {
-    .name = "vga",
-    .version_id = 2,
-    .minimum_version_id = 2,
-    .minimum_version_id_old = 2,
-    .post_load = vga_common_post_load,
-    .fields      = (VMStateField []) {
-        VMSTATE_UINT32(latch, VGACommonState),
-        VMSTATE_UINT8(sr_index, VGACommonState),
-        VMSTATE_PARTIAL_BUFFER(sr, VGACommonState, 8),
-        VMSTATE_UINT8(gr_index, VGACommonState),
-        VMSTATE_PARTIAL_BUFFER(gr, VGACommonState, 16),
-        VMSTATE_UINT8(ar_index, VGACommonState),
-        VMSTATE_BUFFER(ar, VGACommonState),
-        VMSTATE_INT32(ar_flip_flop, VGACommonState),
-        VMSTATE_UINT8(cr_index, VGACommonState),
-        VMSTATE_BUFFER(cr, VGACommonState),
-        VMSTATE_UINT8(msr, VGACommonState),
-        VMSTATE_UINT8(fcr, VGACommonState),
-        VMSTATE_UINT8(st00, VGACommonState),
-        VMSTATE_UINT8(st01, VGACommonState),
-
-        VMSTATE_UINT8(dac_state, VGACommonState),
-        VMSTATE_UINT8(dac_sub_index, VGACommonState),
-        VMSTATE_UINT8(dac_read_index, VGACommonState),
-        VMSTATE_UINT8(dac_write_index, VGACommonState),
-        VMSTATE_BUFFER(dac_cache, VGACommonState),
-        VMSTATE_BUFFER(palette, VGACommonState),
-
-        VMSTATE_INT32(bank_offset, VGACommonState),
-        VMSTATE_UINT8_EQUAL(is_vbe_vmstate, VGACommonState),
-        VMSTATE_UINT16(vbe_index, VGACommonState),
-        VMSTATE_UINT16_ARRAY(vbe_regs, VGACommonState, VBE_DISPI_INDEX_NB),
-        VMSTATE_UINT32(vbe_start_addr, VGACommonState),
-        VMSTATE_UINT32(vbe_line_offset, VGACommonState),
-        VMSTATE_UINT32(vbe_bank_mask, VGACommonState),
-        VMSTATE_END_OF_LIST()
-    }
-};
-
-void vga_common_init(VGACommonState *s)
-{
-    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;
-    }
-
-    /* valid range: 1 MB -> 256 MB */
-    s->vram_size = 1024 * 1024;
-    while (s->vram_size < (s->vram_size_mb << 20) &&
-           s->vram_size < (256 << 20)) {
-        s->vram_size <<= 1;
-    }
-    s->vram_size_mb = s->vram_size >> 20;
-
-    s->is_vbe_vmstate = 1;
-    memory_region_init_ram(&s->vram, "vga.vram", s->vram_size);
-    vmstate_register_ram_global(&s->vram);
-    xen_register_framebuffer(&s->vram);
-    s->vram_ptr = memory_region_get_ram_ptr(&s->vram);
-    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_dirty_log_start(s);
-}
-
-static const MemoryRegionPortio vga_portio_list[] = {
-    { 0x04,  2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3b4 */
-    { 0x0a,  1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3ba */
-    { 0x10, 16, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3c0 */
-    { 0x24,  2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3d4 */
-    { 0x2a,  1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3da */
-    PORTIO_END_OF_LIST(),
-};
-
-static const MemoryRegionPortio vbe_portio_list[] = {
-    { 0, 1, 2, .read = vbe_ioport_read_index, .write = vbe_ioport_write_index },
-# ifdef TARGET_I386
-    { 1, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
-# endif
-    { 2, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
-    PORTIO_END_OF_LIST(),
-};
-
-/* Used by both ISA and PCI */
-MemoryRegion *vga_init_io(VGACommonState *s,
-                          const MemoryRegionPortio **vga_ports,
-                          const MemoryRegionPortio **vbe_ports)
-{
-    MemoryRegion *vga_mem;
-
-    *vga_ports = vga_portio_list;
-    *vbe_ports = vbe_portio_list;
-
-    vga_mem = g_malloc(sizeof(*vga_mem));
-    memory_region_init_io(vga_mem, &vga_mem_ops, s,
-                          "vga-lowmem", 0x20000);
-    memory_region_set_flush_coalesced(vga_mem);
-
-    return vga_mem;
-}
-
-void vga_init(VGACommonState *s, MemoryRegion *address_space,
-              MemoryRegion *address_space_io, bool init_vga_ports)
-{
-    MemoryRegion *vga_io_memory;
-    const MemoryRegionPortio *vga_ports, *vbe_ports;
-    PortioList *vga_port_list = g_new(PortioList, 1);
-    PortioList *vbe_port_list = g_new(PortioList, 1);
-
-    qemu_register_reset(vga_reset, s);
-
-    s->bank_offset = 0;
-
-    s->legacy_address_space = address_space;
-
-    vga_io_memory = vga_init_io(s, &vga_ports, &vbe_ports);
-    memory_region_add_subregion_overlap(address_space,
-                                        isa_mem_base + 0x000a0000,
-                                        vga_io_memory,
-                                        1);
-    memory_region_set_coalescing(vga_io_memory);
-    if (init_vga_ports) {
-        portio_list_init(vga_port_list, vga_ports, s, "vga");
-        portio_list_add(vga_port_list, address_space_io, 0x3b0);
-    }
-    if (vbe_ports) {
-        portio_list_init(vbe_port_list, vbe_ports, s, "vbe");
-        portio_list_add(vbe_port_list, address_space_io, 0x1ce);
-    }
-}
-
-void vga_init_vbe(VGACommonState *s, MemoryRegion *system_memory)
-{
-    /* With pc-0.12 and below we map both the PCI BAR and the fixed VBE region,
-     * so use an alias to avoid double-mapping the same region.
-     */
-    memory_region_init_alias(&s->vram_vbe, "vram.vbe",
-                             &s->vram, 0, memory_region_size(&s->vram));
-    /* XXX: use optimized standard vga accesses */
-    memory_region_add_subregion(system_memory,
-                                VBE_DISPI_LFB_PHYSICAL_ADDRESS,
-                                &s->vram_vbe);
-    s->vbe_mapped = 1;
-}
-/********************************************************/
-/* vga screen dump */
-
-void ppm_save(const char *filename, struct DisplaySurface *ds, Error **errp)
-{
-    int width = pixman_image_get_width(ds->image);
-    int height = pixman_image_get_height(ds->image);
-    FILE *f;
-    int y;
-    int ret;
-    pixman_image_t *linebuf;
-
-    trace_ppm_save(filename, ds);
-    f = fopen(filename, "wb");
-    if (!f) {
-        error_setg(errp, "failed to open file '%s': %s", filename,
-                   strerror(errno));
-        return;
-    }
-    ret = fprintf(f, "P6\n%d %d\n%d\n", width, height, 255);
-    if (ret < 0) {
-        linebuf = NULL;
-        goto write_err;
-    }
-    linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
-    for (y = 0; y < height; y++) {
-        qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y);
-        clearerr(f);
-        ret = fwrite(pixman_image_get_data(linebuf), 1,
-                     pixman_image_get_stride(linebuf), f);
-        (void)ret;
-        if (ferror(f)) {
-            goto write_err;
-        }
-    }
-
-out:
-    qemu_pixman_image_unref(linebuf);
-    fclose(f);
-    return;
-
-write_err:
-    error_setg(errp, "failed to write to file '%s': %s", filename,
-               strerror(errno));
-    unlink(filename);
-    goto out;
-}
-
-/* save the vga display in a PPM image even if no display is
-   available */
-static void vga_screen_dump(void *opaque, const char *filename, bool cswitch,
-                            Error **errp)
-{
-    VGACommonState *s = opaque;
-    DisplaySurface *surface = qemu_console_surface(s->con);
-
-    if (cswitch) {
-        vga_invalidate_display(s);
-    }
-    vga_hw_update();
-    ppm_save(filename, surface, errp);
-}