Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 2460 insertions, 0 deletions

diff --git a/ui/console.c b/ui/console.c
new file mode 100644
index 000000000..29a3e3f0f
--- /dev/null
+++ b/ui/console.c
@@ -0,0 +1,2460 @@
+/*
+ * QEMU graphical console
+ *
+ * Copyright (c) 2004 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 "qemu/osdep.h"
+#include "ui/console.h"
+#include "hw/qdev-core.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-ui.h"
+#include "qemu/fifo8.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
+#include "qemu/option.h"
+#include "qemu/timer.h"
+#include "chardev/char.h"
+#include "trace.h"
+#include "exec/memory.h"
+#include "io/channel-file.h"
+#include "qom/object.h"
+
+#define DEFAULT_BACKSCROLL 512
+#define CONSOLE_CURSOR_PERIOD 500
+
+typedef struct TextAttributes {
+    uint8_t fgcol:4;
+    uint8_t bgcol:4;
+    uint8_t bold:1;
+    uint8_t uline:1;
+    uint8_t blink:1;
+    uint8_t invers:1;
+    uint8_t unvisible:1;
+} TextAttributes;
+
+typedef struct TextCell {
+    uint8_t ch;
+    TextAttributes t_attrib;
+} TextCell;
+
+#define MAX_ESC_PARAMS 3
+
+enum TTYState {
+    TTY_STATE_NORM,
+    TTY_STATE_ESC,
+    TTY_STATE_CSI,
+};
+
+typedef enum {
+    GRAPHIC_CONSOLE,
+    TEXT_CONSOLE,
+    TEXT_CONSOLE_FIXED_SIZE
+} console_type_t;
+
+struct QemuConsole {
+    Object parent;
+
+    int index;
+    console_type_t console_type;
+    DisplayState *ds;
+    DisplaySurface *surface;
+    int dcls;
+    DisplayChangeListener *gl;
+    bool gl_block;
+    int window_id;
+
+    /* Graphic console state.  */
+    Object *device;
+    uint32_t head;
+    QemuUIInfo ui_info;
+    QEMUTimer *ui_timer;
+    const GraphicHwOps *hw_ops;
+    void *hw;
+
+    /* Text console state */
+    int width;
+    int height;
+    int total_height;
+    int backscroll_height;
+    int x, y;
+    int x_saved, y_saved;
+    int y_displayed;
+    int y_base;
+    TextAttributes t_attrib_default; /* default text attributes */
+    TextAttributes t_attrib; /* currently active text attributes */
+    TextCell *cells;
+    int text_x[2], text_y[2], cursor_invalidate;
+    int echo;
+
+    int update_x0;
+    int update_y0;
+    int update_x1;
+    int update_y1;
+
+    enum TTYState state;
+    int esc_params[MAX_ESC_PARAMS];
+    int nb_esc_params;
+
+    Chardev *chr;
+    /* fifo for key pressed */
+    Fifo8 out_fifo;
+    CoQueue dump_queue;
+
+    QTAILQ_ENTRY(QemuConsole) next;
+};
+
+struct DisplayState {
+    QEMUTimer *gui_timer;
+    uint64_t last_update;
+    uint64_t update_interval;
+    bool refreshing;
+    bool have_gfx;
+    bool have_text;
+
+    QLIST_HEAD(, DisplayChangeListener) listeners;
+};
+
+static DisplayState *display_state;
+static QemuConsole *active_console;
+static QTAILQ_HEAD(, QemuConsole) consoles =
+    QTAILQ_HEAD_INITIALIZER(consoles);
+static bool cursor_visible_phase;
+static QEMUTimer *cursor_timer;
+
+static void text_console_do_init(Chardev *chr, DisplayState *ds);
+static void dpy_refresh(DisplayState *s);
+static DisplayState *get_alloc_displaystate(void);
+static void text_console_update_cursor_timer(void);
+static void text_console_update_cursor(void *opaque);
+
+static void gui_update(void *opaque)
+{
+    uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
+    uint64_t dcl_interval;
+    DisplayState *ds = opaque;
+    DisplayChangeListener *dcl;
+    QemuConsole *con;
+
+    ds->refreshing = true;
+    dpy_refresh(ds);
+    ds->refreshing = false;
+
+    QLIST_FOREACH(dcl, &ds->listeners, next) {
+        dcl_interval = dcl->update_interval ?
+            dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
+        if (interval > dcl_interval) {
+            interval = dcl_interval;
+        }
+    }
+    if (ds->update_interval != interval) {
+        ds->update_interval = interval;
+        QTAILQ_FOREACH(con, &consoles, next) {
+            if (con->hw_ops->update_interval) {
+                con->hw_ops->update_interval(con->hw, interval);
+            }
+        }
+        trace_console_refresh(interval);
+    }
+    ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
+    timer_mod(ds->gui_timer, ds->last_update + interval);
+}
+
+static void gui_setup_refresh(DisplayState *ds)
+{
+    DisplayChangeListener *dcl;
+    bool need_timer = false;
+    bool have_gfx = false;
+    bool have_text = false;
+
+    QLIST_FOREACH(dcl, &ds->listeners, next) {
+        if (dcl->ops->dpy_refresh != NULL) {
+            need_timer = true;
+        }
+        if (dcl->ops->dpy_gfx_update != NULL) {
+            have_gfx = true;
+        }
+        if (dcl->ops->dpy_text_update != NULL) {
+            have_text = true;
+        }
+    }
+
+    if (need_timer && ds->gui_timer == NULL) {
+        ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
+        timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
+    }
+    if (!need_timer && ds->gui_timer != NULL) {
+        timer_free(ds->gui_timer);
+        ds->gui_timer = NULL;
+    }
+
+    ds->have_gfx = have_gfx;
+    ds->have_text = have_text;
+}
+
+void graphic_hw_update_done(QemuConsole *con)
+{
+    if (con) {
+        qemu_co_queue_restart_all(&con->dump_queue);
+    }
+}
+
+void graphic_hw_update(QemuConsole *con)
+{
+    bool async = false;
+    con = con ? con : active_console;
+    if (!con) {
+        return;
+    }
+    if (con->hw_ops->gfx_update) {
+        con->hw_ops->gfx_update(con->hw);
+        async = con->hw_ops->gfx_update_async;
+    }
+    if (!async) {
+        graphic_hw_update_done(con);
+    }
+}
+
+void graphic_hw_gl_block(QemuConsole *con, bool block)
+{
+    assert(con != NULL);
+
+    con->gl_block = block;
+    if (con->hw_ops->gl_block) {
+        con->hw_ops->gl_block(con->hw, block);
+    }
+}
+
+void graphic_hw_gl_flushed(QemuConsole *con)
+{
+    assert(con != NULL);
+
+    if (con->hw_ops->gl_flushed) {
+        con->hw_ops->gl_flushed(con->hw);
+    }
+}
+
+int qemu_console_get_window_id(QemuConsole *con)
+{
+    return con->window_id;
+}
+
+void qemu_console_set_window_id(QemuConsole *con, int window_id)
+{
+    con->window_id = window_id;
+}
+
+void graphic_hw_invalidate(QemuConsole *con)
+{
+    if (!con) {
+        con = active_console;
+    }
+    if (con && con->hw_ops->invalidate) {
+        con->hw_ops->invalidate(con->hw);
+    }
+}
+
+static bool ppm_save(int fd, pixman_image_t *image, Error **errp)
+{
+    int width = pixman_image_get_width(image);
+    int height = pixman_image_get_height(image);
+    g_autoptr(Object) ioc = OBJECT(qio_channel_file_new_fd(fd));
+    g_autofree char *header = NULL;
+    g_autoptr(pixman_image_t) linebuf = NULL;
+    int y;
+
+    trace_ppm_save(fd, image);
+
+    header = g_strdup_printf("P6\n%d %d\n%d\n", width, height, 255);
+    if (qio_channel_write_all(QIO_CHANNEL(ioc),
+                              header, strlen(header), errp) < 0) {
+        return false;
+    }
+
+    linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
+    for (y = 0; y < height; y++) {
+        qemu_pixman_linebuf_fill(linebuf, image, width, 0, y);
+        if (qio_channel_write_all(QIO_CHANNEL(ioc),
+                                  (char *)pixman_image_get_data(linebuf),
+                                  pixman_image_get_stride(linebuf), errp) < 0) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static void graphic_hw_update_bh(void *con)
+{
+    graphic_hw_update(con);
+}
+
+/* Safety: coroutine-only, concurrent-coroutine safe, main thread only */
+void coroutine_fn
+qmp_screendump(const char *filename, bool has_device, const char *device,
+               bool has_head, int64_t head, Error **errp)
+{
+    g_autoptr(pixman_image_t) image = NULL;
+    QemuConsole *con;
+    DisplaySurface *surface;
+    int fd;
+
+    if (has_device) {
+        con = qemu_console_lookup_by_device_name(device, has_head ? head : 0,
+                                                 errp);
+        if (!con) {
+            return;
+        }
+    } else {
+        if (has_head) {
+            error_setg(errp, "'head' must be specified together with 'device'");
+            return;
+        }
+        con = qemu_console_lookup_by_index(0);
+        if (!con) {
+            error_setg(errp, "There is no console to take a screendump from");
+            return;
+        }
+    }
+
+    if (qemu_co_queue_empty(&con->dump_queue)) {
+        /* Defer the update, it will restart the pending coroutines */
+        aio_bh_schedule_oneshot(qemu_get_aio_context(),
+                                graphic_hw_update_bh, con);
+    }
+    qemu_co_queue_wait(&con->dump_queue, NULL);
+
+    /*
+     * All pending coroutines are woken up, while the BQL is held.  No
+     * further graphic update are possible until it is released.  Take
+     * an image ref before that.
+     */
+    surface = qemu_console_surface(con);
+    if (!surface) {
+        error_setg(errp, "no surface");
+        return;
+    }
+    image = pixman_image_ref(surface->image);
+
+    fd = qemu_open_old(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
+    if (fd == -1) {
+        error_setg(errp, "failed to open file '%s': %s", filename,
+                   strerror(errno));
+        return;
+    }
+
+    /*
+     * The image content could potentially be updated as the coroutine
+     * yields and releases the BQL. It could produce corrupted dump, but
+     * it should be otherwise safe.
+     */
+    if (!ppm_save(fd, image, errp)) {
+        qemu_unlink(filename);
+    }
+}
+
+void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
+{
+    if (!con) {
+        con = active_console;
+    }
+    if (con && con->hw_ops->text_update) {
+        con->hw_ops->text_update(con->hw, chardata);
+    }
+}
+
+static void vga_fill_rect(QemuConsole *con,
+                          int posx, int posy, int width, int height,
+                          pixman_color_t color)
+{
+    DisplaySurface *surface = qemu_console_surface(con);
+    pixman_rectangle16_t rect = {
+        .x = posx, .y = posy, .width = width, .height = height
+    };
+
+    pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
+                                 &color, 1, &rect);
+}
+
+/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
+static void vga_bitblt(QemuConsole *con,
+                       int xs, int ys, int xd, int yd, int w, int h)
+{
+    DisplaySurface *surface = qemu_console_surface(con);
+
+    pixman_image_composite(PIXMAN_OP_SRC,
+                           surface->image, NULL, surface->image,
+                           xs, ys, 0, 0, xd, yd, w, h);
+}
+
+/***********************************************************/
+/* basic char display */
+
+#define FONT_HEIGHT 16
+#define FONT_WIDTH 8
+
+#include "vgafont.h"
+
+#define QEMU_RGB(r, g, b)                                               \
+    { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
+
+static const pixman_color_t color_table_rgb[2][8] = {
+    {   /* dark */
+        [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
+        [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xaa),  /* blue */
+        [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xaa, 0x00),  /* green */
+        [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xaa, 0xaa),  /* cyan */
+        [QEMU_COLOR_RED]     = QEMU_RGB(0xaa, 0x00, 0x00),  /* red */
+        [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xaa, 0x00, 0xaa),  /* magenta */
+        [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xaa, 0xaa, 0x00),  /* yellow */
+        [QEMU_COLOR_WHITE]   = QEMU_RGB(0xaa, 0xaa, 0xaa),  /* white */
+    },
+    {   /* bright */
+        [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
+        [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xff),  /* blue */
+        [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xff, 0x00),  /* green */
+        [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xff, 0xff),  /* cyan */
+        [QEMU_COLOR_RED]     = QEMU_RGB(0xff, 0x00, 0x00),  /* red */
+        [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xff, 0x00, 0xff),  /* magenta */
+        [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xff, 0xff, 0x00),  /* yellow */
+        [QEMU_COLOR_WHITE]   = QEMU_RGB(0xff, 0xff, 0xff),  /* white */
+    }
+};
+
+static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
+                          TextAttributes *t_attrib)
+{
+    static pixman_image_t *glyphs[256];
+    DisplaySurface *surface = qemu_console_surface(s);
+    pixman_color_t fgcol, bgcol;
+
+    if (t_attrib->invers) {
+        bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
+        fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
+    } else {
+        fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
+        bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
+    }
+
+    if (!glyphs[ch]) {
+        glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
+    }
+    qemu_pixman_glyph_render(glyphs[ch], surface->image,
+                             &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
+}
+
+static void text_console_resize(QemuConsole *s)
+{
+    TextCell *cells, *c, *c1;
+    int w1, x, y, last_width;
+
+    last_width = s->width;
+    s->width = surface_width(s->surface) / FONT_WIDTH;
+    s->height = surface_height(s->surface) / FONT_HEIGHT;
+
+    w1 = last_width;
+    if (s->width < w1)
+        w1 = s->width;
+
+    cells = g_new(TextCell, s->width * s->total_height + 1);
+    for(y = 0; y < s->total_height; y++) {
+        c = &cells[y * s->width];
+        if (w1 > 0) {
+            c1 = &s->cells[y * last_width];
+            for(x = 0; x < w1; x++) {
+                *c++ = *c1++;
+            }
+        }
+        for(x = w1; x < s->width; x++) {
+            c->ch = ' ';
+            c->t_attrib = s->t_attrib_default;
+            c++;
+        }
+    }
+    g_free(s->cells);
+    s->cells = cells;
+}
+
+static inline void text_update_xy(QemuConsole *s, int x, int y)
+{
+    s->text_x[0] = MIN(s->text_x[0], x);
+    s->text_x[1] = MAX(s->text_x[1], x);
+    s->text_y[0] = MIN(s->text_y[0], y);
+    s->text_y[1] = MAX(s->text_y[1], y);
+}
+
+static void invalidate_xy(QemuConsole *s, int x, int y)
+{
+    if (!qemu_console_is_visible(s)) {
+        return;
+    }
+    if (s->update_x0 > x * FONT_WIDTH)
+        s->update_x0 = x * FONT_WIDTH;
+    if (s->update_y0 > y * FONT_HEIGHT)
+        s->update_y0 = y * FONT_HEIGHT;
+    if (s->update_x1 < (x + 1) * FONT_WIDTH)
+        s->update_x1 = (x + 1) * FONT_WIDTH;
+    if (s->update_y1 < (y + 1) * FONT_HEIGHT)
+        s->update_y1 = (y + 1) * FONT_HEIGHT;
+}
+
+static void update_xy(QemuConsole *s, int x, int y)
+{
+    TextCell *c;
+    int y1, y2;
+
+    if (s->ds->have_text) {
+        text_update_xy(s, x, y);
+    }
+
+    y1 = (s->y_base + y) % s->total_height;
+    y2 = y1 - s->y_displayed;
+    if (y2 < 0) {
+        y2 += s->total_height;
+    }
+    if (y2 < s->height) {
+        if (x >= s->width) {
+            x = s->width - 1;
+        }
+        c = &s->cells[y1 * s->width + x];
+        vga_putcharxy(s, x, y2, c->ch,
+                      &(c->t_attrib));
+        invalidate_xy(s, x, y2);
+    }
+}
+
+static void console_show_cursor(QemuConsole *s, int show)
+{
+    TextCell *c;
+    int y, y1;
+    int x = s->x;
+
+    if (s->ds->have_text) {
+        s->cursor_invalidate = 1;
+    }
+
+    if (x >= s->width) {
+        x = s->width - 1;
+    }
+    y1 = (s->y_base + s->y) % s->total_height;
+    y = y1 - s->y_displayed;
+    if (y < 0) {
+        y += s->total_height;
+    }
+    if (y < s->height) {
+        c = &s->cells[y1 * s->width + x];
+        if (show && cursor_visible_phase) {
+            TextAttributes t_attrib = s->t_attrib_default;
+            t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
+            vga_putcharxy(s, x, y, c->ch, &t_attrib);
+        } else {
+            vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
+        }
+        invalidate_xy(s, x, y);
+    }
+}
+
+static void console_refresh(QemuConsole *s)
+{
+    DisplaySurface *surface = qemu_console_surface(s);
+    TextCell *c;
+    int x, y, y1;
+
+    if (s->ds->have_text) {
+        s->text_x[0] = 0;
+        s->text_y[0] = 0;
+        s->text_x[1] = s->width - 1;
+        s->text_y[1] = s->height - 1;
+        s->cursor_invalidate = 1;
+    }
+
+    vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
+                  color_table_rgb[0][QEMU_COLOR_BLACK]);
+    y1 = s->y_displayed;
+    for (y = 0; y < s->height; y++) {
+        c = s->cells + y1 * s->width;
+        for (x = 0; x < s->width; x++) {
+            vga_putcharxy(s, x, y, c->ch,
+                          &(c->t_attrib));
+            c++;
+        }
+        if (++y1 == s->total_height) {
+            y1 = 0;
+        }
+    }
+    console_show_cursor(s, 1);
+    dpy_gfx_update(s, 0, 0,
+                   surface_width(surface), surface_height(surface));
+}
+
+static void console_scroll(QemuConsole *s, int ydelta)
+{
+    int i, y1;
+
+    if (ydelta > 0) {
+        for(i = 0; i < ydelta; i++) {
+            if (s->y_displayed == s->y_base)
+                break;
+            if (++s->y_displayed == s->total_height)
+                s->y_displayed = 0;
+        }
+    } else {
+        ydelta = -ydelta;
+        i = s->backscroll_height;
+        if (i > s->total_height - s->height)
+            i = s->total_height - s->height;
+        y1 = s->y_base - i;
+        if (y1 < 0)
+            y1 += s->total_height;
+        for(i = 0; i < ydelta; i++) {
+            if (s->y_displayed == y1)
+                break;
+            if (--s->y_displayed < 0)
+                s->y_displayed = s->total_height - 1;
+        }
+    }
+    console_refresh(s);
+}
+
+static void console_put_lf(QemuConsole *s)
+{
+    TextCell *c;
+    int x, y1;
+
+    s->y++;
+    if (s->y >= s->height) {
+        s->y = s->height - 1;
+
+        if (s->y_displayed == s->y_base) {
+            if (++s->y_displayed == s->total_height)
+                s->y_displayed = 0;
+        }
+        if (++s->y_base == s->total_height)
+            s->y_base = 0;
+        if (s->backscroll_height < s->total_height)
+            s->backscroll_height++;
+        y1 = (s->y_base + s->height - 1) % s->total_height;
+        c = &s->cells[y1 * s->width];
+        for(x = 0; x < s->width; x++) {
+            c->ch = ' ';
+            c->t_attrib = s->t_attrib_default;
+            c++;
+        }
+        if (s->y_displayed == s->y_base) {
+            if (s->ds->have_text) {
+                s->text_x[0] = 0;
+                s->text_y[0] = 0;
+                s->text_x[1] = s->width - 1;
+                s->text_y[1] = s->height - 1;
+            }
+
+            vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
+                       s->width * FONT_WIDTH,
+                       (s->height - 1) * FONT_HEIGHT);
+            vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
+                          s->width * FONT_WIDTH, FONT_HEIGHT,
+                          color_table_rgb[0][s->t_attrib_default.bgcol]);
+            s->update_x0 = 0;
+            s->update_y0 = 0;
+            s->update_x1 = s->width * FONT_WIDTH;
+            s->update_y1 = s->height * FONT_HEIGHT;
+        }
+    }
+}
+
+/* Set console attributes depending on the current escape codes.
+ * NOTE: I know this code is not very efficient (checking every color for it
+ * self) but it is more readable and better maintainable.
+ */
+static void console_handle_escape(QemuConsole *s)
+{
+    int i;
+
+    for (i=0; i<s->nb_esc_params; i++) {
+        switch (s->esc_params[i]) {
+            case 0: /* reset all console attributes to default */
+                s->t_attrib = s->t_attrib_default;
+                break;
+            case 1:
+                s->t_attrib.bold = 1;
+                break;
+            case 4:
+                s->t_attrib.uline = 1;
+                break;
+            case 5:
+                s->t_attrib.blink = 1;
+                break;
+            case 7:
+                s->t_attrib.invers = 1;
+                break;
+            case 8:
+                s->t_attrib.unvisible = 1;
+                break;
+            case 22:
+                s->t_attrib.bold = 0;
+                break;
+            case 24:
+                s->t_attrib.uline = 0;
+                break;
+            case 25:
+                s->t_attrib.blink = 0;
+                break;
+            case 27:
+                s->t_attrib.invers = 0;
+                break;
+            case 28:
+                s->t_attrib.unvisible = 0;
+                break;
+            /* set foreground color */
+            case 30:
+                s->t_attrib.fgcol = QEMU_COLOR_BLACK;
+                break;
+            case 31:
+                s->t_attrib.fgcol = QEMU_COLOR_RED;
+                break;
+            case 32:
+                s->t_attrib.fgcol = QEMU_COLOR_GREEN;
+                break;
+            case 33:
+                s->t_attrib.fgcol = QEMU_COLOR_YELLOW;
+                break;
+            case 34:
+                s->t_attrib.fgcol = QEMU_COLOR_BLUE;
+                break;
+            case 35:
+                s->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
+                break;
+            case 36:
+                s->t_attrib.fgcol = QEMU_COLOR_CYAN;
+                break;
+            case 37:
+                s->t_attrib.fgcol = QEMU_COLOR_WHITE;
+                break;
+            /* set background color */
+            case 40:
+                s->t_attrib.bgcol = QEMU_COLOR_BLACK;
+                break;
+            case 41:
+                s->t_attrib.bgcol = QEMU_COLOR_RED;
+                break;
+            case 42:
+                s->t_attrib.bgcol = QEMU_COLOR_GREEN;
+                break;
+            case 43:
+                s->t_attrib.bgcol = QEMU_COLOR_YELLOW;
+                break;
+            case 44:
+                s->t_attrib.bgcol = QEMU_COLOR_BLUE;
+                break;
+            case 45:
+                s->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
+                break;
+            case 46:
+                s->t_attrib.bgcol = QEMU_COLOR_CYAN;
+                break;
+            case 47:
+                s->t_attrib.bgcol = QEMU_COLOR_WHITE;
+                break;
+        }
+    }
+}
+
+static void console_clear_xy(QemuConsole *s, int x, int y)
+{
+    int y1 = (s->y_base + y) % s->total_height;
+    if (x >= s->width) {
+        x = s->width - 1;
+    }
+    TextCell *c = &s->cells[y1 * s->width + x];
+    c->ch = ' ';
+    c->t_attrib = s->t_attrib_default;
+    update_xy(s, x, y);
+}
+
+static void console_put_one(QemuConsole *s, int ch)
+{
+    TextCell *c;
+    int y1;
+    if (s->x >= s->width) {
+        /* line wrap */
+        s->x = 0;
+        console_put_lf(s);
+    }
+    y1 = (s->y_base + s->y) % s->total_height;
+    c = &s->cells[y1 * s->width + s->x];
+    c->ch = ch;
+    c->t_attrib = s->t_attrib;
+    update_xy(s, s->x, s->y);
+    s->x++;
+}
+
+static void console_respond_str(QemuConsole *s, const char *buf)
+{
+    while (*buf) {
+        console_put_one(s, *buf);
+        buf++;
+    }
+}
+
+/* set cursor, checking bounds */
+static void set_cursor(QemuConsole *s, int x, int y)
+{
+    if (x < 0) {
+        x = 0;
+    }
+    if (y < 0) {
+        y = 0;
+    }
+    if (y >= s->height) {
+        y = s->height - 1;
+    }
+    if (x >= s->width) {
+        x = s->width - 1;
+    }
+
+    s->x = x;
+    s->y = y;
+}
+
+static void console_putchar(QemuConsole *s, int ch)
+{
+    int i;
+    int x, y;
+    char response[40];
+
+    switch(s->state) {
+    case TTY_STATE_NORM:
+        switch(ch) {
+        case '\r':  /* carriage return */
+            s->x = 0;
+            break;
+        case '\n':  /* newline */
+            console_put_lf(s);
+            break;
+        case '\b':  /* backspace */
+            if (s->x > 0)
+                s->x--;
+            break;
+        case '\t':  /* tabspace */
+            if (s->x + (8 - (s->x % 8)) > s->width) {
+                s->x = 0;
+                console_put_lf(s);
+            } else {
+                s->x = s->x + (8 - (s->x % 8));
+            }
+            break;
+        case '\a':  /* alert aka. bell */
+            /* TODO: has to be implemented */
+            break;
+        case 14:
+            /* SI (shift in), character set 0 (ignored) */
+            break;
+        case 15:
+            /* SO (shift out), character set 1 (ignored) */
+            break;
+        case 27:    /* esc (introducing an escape sequence) */
+            s->state = TTY_STATE_ESC;
+            break;
+        default:
+            console_put_one(s, ch);
+            break;
+        }
+        break;
+    case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
+        if (ch == '[') {
+            for(i=0;i<MAX_ESC_PARAMS;i++)
+                s->esc_params[i] = 0;
+            s->nb_esc_params = 0;
+            s->state = TTY_STATE_CSI;
+        } else {
+            s->state = TTY_STATE_NORM;
+        }
+        break;
+    case TTY_STATE_CSI: /* handle escape sequence parameters */
+        if (ch >= '0' && ch <= '9') {
+            if (s->nb_esc_params < MAX_ESC_PARAMS) {
+                int *param = &s->esc_params[s->nb_esc_params];
+                int digit = (ch - '0');
+
+                *param = (*param <= (INT_MAX - digit) / 10) ?
+                         *param * 10 + digit : INT_MAX;
+            }
+        } else {
+            if (s->nb_esc_params < MAX_ESC_PARAMS)
+                s->nb_esc_params++;
+            if (ch == ';' || ch == '?') {
+                break;
+            }
+            trace_console_putchar_csi(s->esc_params[0], s->esc_params[1],
+                                      ch, s->nb_esc_params);
+            s->state = TTY_STATE_NORM;
+            switch(ch) {
+            case 'A':
+                /* move cursor up */
+                if (s->esc_params[0] == 0) {
+                    s->esc_params[0] = 1;
+                }
+                set_cursor(s, s->x, s->y - s->esc_params[0]);
+                break;
+            case 'B':
+                /* move cursor down */
+                if (s->esc_params[0] == 0) {
+                    s->esc_params[0] = 1;
+                }
+                set_cursor(s, s->x, s->y + s->esc_params[0]);
+                break;
+            case 'C':
+                /* move cursor right */
+                if (s->esc_params[0] == 0) {
+                    s->esc_params[0] = 1;
+                }
+                set_cursor(s, s->x + s->esc_params[0], s->y);
+                break;
+            case 'D':
+                /* move cursor left */
+                if (s->esc_params[0] == 0) {
+                    s->esc_params[0] = 1;
+                }
+                set_cursor(s, s->x - s->esc_params[0], s->y);
+                break;
+            case 'G':
+                /* move cursor to column */
+                set_cursor(s, s->esc_params[0] - 1, s->y);
+                break;
+            case 'f':
+            case 'H':
+                /* move cursor to row, column */
+                set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
+                break;
+            case 'J':
+                switch (s->esc_params[0]) {
+                case 0:
+                    /* clear to end of screen */
+                    for (y = s->y; y < s->height; y++) {
+                        for (x = 0; x < s->width; x++) {
+                            if (y == s->y && x < s->x) {
+                                continue;
+                            }
+                            console_clear_xy(s, x, y);
+                        }
+                    }
+                    break;
+                case 1:
+                    /* clear from beginning of screen */
+                    for (y = 0; y <= s->y; y++) {
+                        for (x = 0; x < s->width; x++) {
+                            if (y == s->y && x > s->x) {
+                                break;
+                            }
+                            console_clear_xy(s, x, y);
+                        }
+                    }
+                    break;
+                case 2:
+                    /* clear entire screen */
+                    for (y = 0; y <= s->height; y++) {
+                        for (x = 0; x < s->width; x++) {
+                            console_clear_xy(s, x, y);
+                        }
+                    }
+                    break;
+                }
+                break;
+            case 'K':
+                switch (s->esc_params[0]) {
+                case 0:
+                    /* clear to eol */
+                    for(x = s->x; x < s->width; x++) {
+                        console_clear_xy(s, x, s->y);
+                    }
+                    break;
+                case 1:
+                    /* clear from beginning of line */
+                    for (x = 0; x <= s->x && x < s->width; x++) {
+                        console_clear_xy(s, x, s->y);
+                    }
+                    break;
+                case 2:
+                    /* clear entire line */
+                    for(x = 0; x < s->width; x++) {
+                        console_clear_xy(s, x, s->y);
+                    }
+                    break;
+                }
+                break;
+            case 'm':
+                console_handle_escape(s);
+                break;
+            case 'n':
+                switch (s->esc_params[0]) {
+                case 5:
+                    /* report console status (always succeed)*/
+                    console_respond_str(s, "\033[0n");
+                    break;
+                case 6:
+                    /* report cursor position */
+                    sprintf(response, "\033[%d;%dR",
+                           (s->y_base + s->y) % s->total_height + 1,
+                            s->x + 1);
+                    console_respond_str(s, response);
+                    break;
+                }
+                break;
+            case 's':
+                /* save cursor position */
+                s->x_saved = s->x;
+                s->y_saved = s->y;
+                break;
+            case 'u':
+                /* restore cursor position */
+                s->x = s->x_saved;
+                s->y = s->y_saved;
+                break;
+            default:
+                trace_console_putchar_unhandled(ch);
+                break;
+            }
+            break;
+        }
+    }
+}
+
+void console_select(unsigned int index)
+{
+    DisplayChangeListener *dcl;
+    QemuConsole *s;
+
+    trace_console_select(index);
+    s = qemu_console_lookup_by_index(index);
+    if (s) {
+        DisplayState *ds = s->ds;
+
+        active_console = s;
+        if (ds->have_gfx) {
+            QLIST_FOREACH(dcl, &ds->listeners, next) {
+                if (dcl->con != NULL) {
+                    continue;
+                }
+                if (dcl->ops->dpy_gfx_switch) {
+                    dcl->ops->dpy_gfx_switch(dcl, s->surface);
+                }
+            }
+            if (s->surface) {
+                dpy_gfx_update(s, 0, 0, surface_width(s->surface),
+                               surface_height(s->surface));
+            }
+        }
+        if (ds->have_text) {
+            dpy_text_resize(s, s->width, s->height);
+        }
+        text_console_update_cursor(NULL);
+    }
+}
+
+struct VCChardev {
+    Chardev parent;
+    QemuConsole *console;
+};
+typedef struct VCChardev VCChardev;
+
+#define TYPE_CHARDEV_VC "chardev-vc"
+DECLARE_INSTANCE_CHECKER(VCChardev, VC_CHARDEV,
+                         TYPE_CHARDEV_VC)
+
+static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
+{
+    VCChardev *drv = VC_CHARDEV(chr);
+    QemuConsole *s = drv->console;
+    int i;
+
+    if (!s->ds) {
+        return 0;
+    }
+
+    s->update_x0 = s->width * FONT_WIDTH;
+    s->update_y0 = s->height * FONT_HEIGHT;
+    s->update_x1 = 0;
+    s->update_y1 = 0;
+    console_show_cursor(s, 0);
+    for(i = 0; i < len; i++) {
+        console_putchar(s, buf[i]);
+    }
+    console_show_cursor(s, 1);
+    if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
+        dpy_gfx_update(s, s->update_x0, s->update_y0,
+                       s->update_x1 - s->update_x0,
+                       s->update_y1 - s->update_y0);
+    }
+    return len;
+}
+
+static void kbd_send_chars(QemuConsole *s)
+{
+    uint32_t len, avail;
+
+    len = qemu_chr_be_can_write(s->chr);
+    avail = fifo8_num_used(&s->out_fifo);
+    while (len > 0 && avail > 0) {
+        const uint8_t *buf;
+        uint32_t size;
+
+        buf = fifo8_pop_buf(&s->out_fifo, MIN(len, avail), &size);
+        qemu_chr_be_write(s->chr, (uint8_t *)buf, size);
+        len = qemu_chr_be_can_write(s->chr);
+        avail -= size;
+    }
+}
+
+/* called when an ascii key is pressed */
+void kbd_put_keysym_console(QemuConsole *s, int keysym)
+{
+    uint8_t buf[16], *q;
+    int c;
+    uint32_t num_free;
+
+    if (!s || (s->console_type == GRAPHIC_CONSOLE))
+        return;
+
+    switch(keysym) {
+    case QEMU_KEY_CTRL_UP:
+        console_scroll(s, -1);
+        break;
+    case QEMU_KEY_CTRL_DOWN:
+        console_scroll(s, 1);
+        break;
+    case QEMU_KEY_CTRL_PAGEUP:
+        console_scroll(s, -10);
+        break;
+    case QEMU_KEY_CTRL_PAGEDOWN:
+        console_scroll(s, 10);
+        break;
+    default:
+        /* convert the QEMU keysym to VT100 key string */
+        q = buf;
+        if (keysym >= 0xe100 && keysym <= 0xe11f) {
+            *q++ = '\033';
+            *q++ = '[';
+            c = keysym - 0xe100;
+            if (c >= 10)
+                *q++ = '0' + (c / 10);
+            *q++ = '0' + (c % 10);
+            *q++ = '~';
+        } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
+            *q++ = '\033';
+            *q++ = '[';
+            *q++ = keysym & 0xff;
+        } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
+            vc_chr_write(s->chr, (const uint8_t *) "\r", 1);
+            *q++ = '\n';
+        } else {
+            *q++ = keysym;
+        }
+        if (s->echo) {
+            vc_chr_write(s->chr, buf, q - buf);
+        }
+        num_free = fifo8_num_free(&s->out_fifo);
+        fifo8_push_all(&s->out_fifo, buf, MIN(num_free, q - buf));
+        kbd_send_chars(s);
+        break;
+    }
+}
+
+static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
+    [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
+    [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
+    [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,
+    [Q_KEY_CODE_LEFT]   = QEMU_KEY_LEFT,
+    [Q_KEY_CODE_HOME]   = QEMU_KEY_HOME,
+    [Q_KEY_CODE_END]    = QEMU_KEY_END,
+    [Q_KEY_CODE_PGUP]   = QEMU_KEY_PAGEUP,
+    [Q_KEY_CODE_PGDN]   = QEMU_KEY_PAGEDOWN,
+    [Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
+    [Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
+};
+
+static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
+    [Q_KEY_CODE_UP]     = QEMU_KEY_CTRL_UP,
+    [Q_KEY_CODE_DOWN]   = QEMU_KEY_CTRL_DOWN,
+    [Q_KEY_CODE_RIGHT]  = QEMU_KEY_CTRL_RIGHT,
+    [Q_KEY_CODE_LEFT]   = QEMU_KEY_CTRL_LEFT,
+    [Q_KEY_CODE_HOME]   = QEMU_KEY_CTRL_HOME,
+    [Q_KEY_CODE_END]    = QEMU_KEY_CTRL_END,
+    [Q_KEY_CODE_PGUP]   = QEMU_KEY_CTRL_PAGEUP,
+    [Q_KEY_CODE_PGDN]   = QEMU_KEY_CTRL_PAGEDOWN,
+};
+
+bool kbd_put_qcode_console(QemuConsole *s, int qcode, bool ctrl)
+{
+    int keysym;
+
+    keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
+    if (keysym == 0) {
+        return false;
+    }
+    kbd_put_keysym_console(s, keysym);
+    return true;
+}
+
+void kbd_put_string_console(QemuConsole *s, const char *str, int len)
+{
+    int i;
+
+    for (i = 0; i < len && str[i]; i++) {
+        kbd_put_keysym_console(s, str[i]);
+    }
+}
+
+void kbd_put_keysym(int keysym)
+{
+    kbd_put_keysym_console(active_console, keysym);
+}
+
+static void text_console_invalidate(void *opaque)
+{
+    QemuConsole *s = (QemuConsole *) opaque;
+
+    if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
+        text_console_resize(s);
+    }
+    console_refresh(s);
+}
+
+static void text_console_update(void *opaque, console_ch_t *chardata)
+{
+    QemuConsole *s = (QemuConsole *) opaque;
+    int i, j, src;
+
+    if (s->text_x[0] <= s->text_x[1]) {
+        src = (s->y_base + s->text_y[0]) * s->width;
+        chardata += s->text_y[0] * s->width;
+        for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
+            for (j = 0; j < s->width; j++, src++) {
+                console_write_ch(chardata ++,
+                                 ATTR2CHTYPE(s->cells[src].ch,
+                                             s->cells[src].t_attrib.fgcol,
+                                             s->cells[src].t_attrib.bgcol,
+                                             s->cells[src].t_attrib.bold));
+            }
+        dpy_text_update(s, s->text_x[0], s->text_y[0],
+                        s->text_x[1] - s->text_x[0], i - s->text_y[0]);
+        s->text_x[0] = s->width;
+        s->text_y[0] = s->height;
+        s->text_x[1] = 0;
+        s->text_y[1] = 0;
+    }
+    if (s->cursor_invalidate) {
+        dpy_text_cursor(s, s->x, s->y);
+        s->cursor_invalidate = 0;
+    }
+}
+
+static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
+                                uint32_t head)
+{
+    Object *obj;
+    QemuConsole *s;
+    int i;
+
+    obj = object_new(TYPE_QEMU_CONSOLE);
+    s = QEMU_CONSOLE(obj);
+    qemu_co_queue_init(&s->dump_queue);
+    s->head = head;
+    object_property_add_link(obj, "device", TYPE_DEVICE,
+                             (Object **)&s->device,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_STRONG);
+    object_property_add_uint32_ptr(obj, "head", &s->head,
+                                   OBJ_PROP_FLAG_READ);
+
+    if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
+        (console_type == GRAPHIC_CONSOLE))) {
+        active_console = s;
+    }
+    s->ds = ds;
+    s->console_type = console_type;
+    s->window_id = -1;
+
+    if (QTAILQ_EMPTY(&consoles)) {
+        s->index = 0;
+        QTAILQ_INSERT_TAIL(&consoles, s, next);
+    } else if (console_type != GRAPHIC_CONSOLE || phase_check(PHASE_MACHINE_READY)) {
+        QemuConsole *last = QTAILQ_LAST(&consoles);
+        s->index = last->index + 1;
+        QTAILQ_INSERT_TAIL(&consoles, s, next);
+    } else {
+        /*
+         * HACK: Put graphical consoles before text consoles.
+         *
+         * Only do that for coldplugged devices.  After initial device
+         * initialization we will not renumber the consoles any more.
+         */
+        QemuConsole *c = QTAILQ_FIRST(&consoles);
+
+        while (QTAILQ_NEXT(c, next) != NULL &&
+               c->console_type == GRAPHIC_CONSOLE) {
+            c = QTAILQ_NEXT(c, next);
+        }
+        if (c->console_type == GRAPHIC_CONSOLE) {
+            /* have no text consoles */
+            s->index = c->index + 1;
+            QTAILQ_INSERT_AFTER(&consoles, c, s, next);
+        } else {
+            s->index = c->index;
+            QTAILQ_INSERT_BEFORE(c, s, next);
+            /* renumber text consoles */
+            for (i = s->index + 1; c != NULL; c = QTAILQ_NEXT(c, next), i++) {
+                c->index = i;
+            }
+        }
+    }
+    return s;
+}
+
+DisplaySurface *qemu_create_displaysurface(int width, int height)
+{
+    DisplaySurface *surface = g_new0(DisplaySurface, 1);
+
+    trace_displaysurface_create(surface, width, height);
+    surface->format = PIXMAN_x8r8g8b8;
+    surface->image = pixman_image_create_bits(surface->format,
+                                              width, height,
+                                              NULL, width * 4);
+    assert(surface->image != NULL);
+    surface->flags = QEMU_ALLOCATED_FLAG;
+
+    return surface;
+}
+
+DisplaySurface *qemu_create_displaysurface_from(int width, int height,
+                                                pixman_format_code_t format,
+                                                int linesize, uint8_t *data)
+{
+    DisplaySurface *surface = g_new0(DisplaySurface, 1);
+
+    trace_displaysurface_create_from(surface, width, height, format);
+    surface->format = format;
+    surface->image = pixman_image_create_bits(surface->format,
+                                              width, height,
+                                              (void *)data, linesize);
+    assert(surface->image != NULL);
+
+    return surface;
+}
+
+DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
+{
+    DisplaySurface *surface = g_new0(DisplaySurface, 1);
+
+    trace_displaysurface_create_pixman(surface);
+    surface->format = pixman_image_get_format(image);
+    surface->image = pixman_image_ref(image);
+
+    return surface;
+}
+
+DisplaySurface *qemu_create_placeholder_surface(int w, int h,
+                                                const char *msg)
+{
+    DisplaySurface *surface = qemu_create_displaysurface(w, h);
+    pixman_color_t bg = color_table_rgb[0][QEMU_COLOR_BLACK];
+    pixman_color_t fg = color_table_rgb[0][QEMU_COLOR_WHITE];
+    pixman_image_t *glyph;
+    int len, x, y, i;
+
+    len = strlen(msg);
+    x = (w / FONT_WIDTH  - len) / 2;
+    y = (h / FONT_HEIGHT - 1)   / 2;
+    for (i = 0; i < len; i++) {
+        glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
+        qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
+                                 x+i, y, FONT_WIDTH, FONT_HEIGHT);
+        qemu_pixman_image_unref(glyph);
+    }
+    surface->flags |= QEMU_PLACEHOLDER_FLAG;
+    return surface;
+}
+
+void qemu_free_displaysurface(DisplaySurface *surface)
+{
+    if (surface == NULL) {
+        return;
+    }
+    trace_displaysurface_free(surface);
+    qemu_pixman_image_unref(surface->image);
+    g_free(surface);
+}
+
+bool console_has_gl(QemuConsole *con)
+{
+    return con->gl != NULL;
+}
+
+static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl)
+{
+    if (dcl->ops->dpy_has_dmabuf) {
+        return dcl->ops->dpy_has_dmabuf(dcl);
+    }
+
+    if (dcl->ops->dpy_gl_scanout_dmabuf) {
+        return true;
+    }
+
+    return false;
+}
+
+static bool dpy_compatible_with(QemuConsole *con,
+                                DisplayChangeListener *dcl, Error **errp)
+{
+    int flags;
+
+    flags = con->hw_ops->get_flags ? con->hw_ops->get_flags(con->hw) : 0;
+
+    if (flags & GRAPHIC_FLAGS_GL &&
+        !console_has_gl(con)) {
+        error_setg(errp, "The console requires a GL context.");
+        return false;
+
+    }
+
+    if (flags & GRAPHIC_FLAGS_DMABUF &&
+        !displaychangelistener_has_dmabuf(dcl)) {
+        error_setg(errp, "The console requires display DMABUF support.");
+        return false;
+    }
+
+    return true;
+}
+
+void register_displaychangelistener(DisplayChangeListener *dcl)
+{
+    static const char nodev[] =
+        "This VM has no graphic display device.";
+    static DisplaySurface *dummy;
+    QemuConsole *con;
+
+    assert(!dcl->ds);
+
+    if (dcl->ops->dpy_gl_ctx_create) {
+        /* display has opengl support */
+        assert(dcl->con);
+        if (dcl->con->gl) {
+            fprintf(stderr, "can't register two opengl displays (%s, %s)\n",
+                    dcl->ops->dpy_name, dcl->con->gl->ops->dpy_name);
+            exit(1);
+        }
+        dcl->con->gl = dcl;
+    }
+
+    if (dcl->con) {
+        dpy_compatible_with(dcl->con, dcl, &error_fatal);
+    }
+
+    trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
+    dcl->ds = get_alloc_displaystate();
+    QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
+    gui_setup_refresh(dcl->ds);
+    if (dcl->con) {
+        dcl->con->dcls++;
+        con = dcl->con;
+    } else {
+        con = active_console;
+    }
+    if (dcl->ops->dpy_gfx_switch) {
+        if (con) {
+            dcl->ops->dpy_gfx_switch(dcl, con->surface);
+        } else {
+            if (!dummy) {
+                dummy = qemu_create_placeholder_surface(640, 480, nodev);
+            }
+            dcl->ops->dpy_gfx_switch(dcl, dummy);
+        }
+    }
+    text_console_update_cursor(NULL);
+}
+
+void update_displaychangelistener(DisplayChangeListener *dcl,
+                                  uint64_t interval)
+{
+    DisplayState *ds = dcl->ds;
+
+    dcl->update_interval = interval;
+    if (!ds->refreshing && ds->update_interval > interval) {
+        timer_mod(ds->gui_timer, ds->last_update + interval);
+    }
+}
+
+void unregister_displaychangelistener(DisplayChangeListener *dcl)
+{
+    DisplayState *ds = dcl->ds;
+    trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
+    if (dcl->con) {
+        dcl->con->dcls--;
+    }
+    QLIST_REMOVE(dcl, next);
+    dcl->ds = NULL;
+    gui_setup_refresh(ds);
+}
+
+static void dpy_set_ui_info_timer(void *opaque)
+{
+    QemuConsole *con = opaque;
+
+    con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
+}
+
+bool dpy_ui_info_supported(QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+
+    return con->hw_ops->ui_info != NULL;
+}
+
+const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+
+    return &con->ui_info;
+}
+
+int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+
+    if (!dpy_ui_info_supported(con)) {
+        return -1;
+    }
+    if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
+        /* nothing changed -- ignore */
+        return 0;
+    }
+
+    /*
+     * Typically we get a flood of these as the user resizes the window.
+     * Wait until the dust has settled (one second without updates), then
+     * go notify the guest.
+     */
+    con->ui_info = *info;
+    timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
+    return 0;
+}
+
+void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+    int width = w;
+    int height = h;
+
+    if (con->surface) {
+        width = surface_width(con->surface);
+        height = surface_height(con->surface);
+    }
+    x = MAX(x, 0);
+    y = MAX(y, 0);
+    x = MIN(x, width);
+    y = MIN(y, height);
+    w = MIN(w, width - x);
+    h = MIN(h, height - y);
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_gfx_update) {
+            dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
+        }
+    }
+}
+
+void dpy_gfx_update_full(QemuConsole *con)
+{
+    if (!con->surface) {
+        return;
+    }
+    dpy_gfx_update(con, 0, 0,
+                   surface_width(con->surface),
+                   surface_height(con->surface));
+}
+
+void dpy_gfx_replace_surface(QemuConsole *con,
+                             DisplaySurface *surface)
+{
+    static const char placeholder_msg[] = "Display output is not active.";
+    DisplayState *s = con->ds;
+    DisplaySurface *old_surface = con->surface;
+    DisplayChangeListener *dcl;
+    int width;
+    int height;
+
+    if (!surface) {
+        if (old_surface) {
+            width = surface_width(old_surface);
+            height = surface_height(old_surface);
+        } else {
+            width = 640;
+            height = 480;
+        }
+
+        surface = qemu_create_placeholder_surface(width, height, placeholder_msg);
+    }
+
+    assert(old_surface != surface);
+
+    con->surface = surface;
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_gfx_switch) {
+            dcl->ops->dpy_gfx_switch(dcl, surface);
+        }
+    }
+    qemu_free_displaysurface(old_surface);
+}
+
+bool dpy_gfx_check_format(QemuConsole *con,
+                          pixman_format_code_t format)
+{
+    DisplayChangeListener *dcl;
+    DisplayState *s = con->ds;
+
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (dcl->con && dcl->con != con) {
+            /* dcl bound to another console -> skip */
+            continue;
+        }
+        if (dcl->ops->dpy_gfx_check_format) {
+            if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
+                return false;
+            }
+        } else {
+            /* default is to allow native 32 bpp only */
+            if (format != qemu_default_pixman_format(32, true)) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+static void dpy_refresh(DisplayState *s)
+{
+    DisplayChangeListener *dcl;
+
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (dcl->ops->dpy_refresh) {
+            dcl->ops->dpy_refresh(dcl);
+        }
+    }
+}
+
+void dpy_text_cursor(QemuConsole *con, int x, int y)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_text_cursor) {
+            dcl->ops->dpy_text_cursor(dcl, x, y);
+        }
+    }
+}
+
+void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_text_update) {
+            dcl->ops->dpy_text_update(dcl, x, y, w, h);
+        }
+    }
+}
+
+void dpy_text_resize(QemuConsole *con, int w, int h)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_text_resize) {
+            dcl->ops->dpy_text_resize(dcl, w, h);
+        }
+    }
+}
+
+void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_mouse_set) {
+            dcl->ops->dpy_mouse_set(dcl, x, y, on);
+        }
+    }
+}
+
+void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    if (!qemu_console_is_visible(con)) {
+        return;
+    }
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (con != (dcl->con ? dcl->con : active_console)) {
+            continue;
+        }
+        if (dcl->ops->dpy_cursor_define) {
+            dcl->ops->dpy_cursor_define(dcl, cursor);
+        }
+    }
+}
+
+bool dpy_cursor_define_supported(QemuConsole *con)
+{
+    DisplayState *s = con->ds;
+    DisplayChangeListener *dcl;
+
+    QLIST_FOREACH(dcl, &s->listeners, next) {
+        if (dcl->ops->dpy_cursor_define) {
+            return true;
+        }
+    }
+    return false;
+}
+
+QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
+                                struct QEMUGLParams *qparams)
+{
+    assert(con->gl);
+    return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
+}
+
+void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
+{
+    assert(con->gl);
+    con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
+}
+
+int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
+{
+    assert(con->gl);
+    return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
+}
+
+void dpy_gl_scanout_disable(QemuConsole *con)
+{
+    assert(con->gl);
+    con->gl->ops->dpy_gl_scanout_disable(con->gl);
+}
+
+void dpy_gl_scanout_texture(QemuConsole *con,
+                            uint32_t backing_id,
+                            bool backing_y_0_top,
+                            uint32_t backing_width,
+                            uint32_t backing_height,
+                            uint32_t x, uint32_t y,
+                            uint32_t width, uint32_t height)
+{
+    assert(con->gl);
+    con->gl->ops->dpy_gl_scanout_texture(con->gl, backing_id,
+                                         backing_y_0_top,
+                                         backing_width, backing_height,
+                                         x, y, width, height);
+}
+
+void dpy_gl_scanout_dmabuf(QemuConsole *con,
+                           QemuDmaBuf *dmabuf)
+{
+    assert(con->gl);
+    con->gl->ops->dpy_gl_scanout_dmabuf(con->gl, dmabuf);
+}
+
+void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
+                          bool have_hot, uint32_t hot_x, uint32_t hot_y)
+{
+    assert(con->gl);
+
+    if (con->gl->ops->dpy_gl_cursor_dmabuf) {
+        con->gl->ops->dpy_gl_cursor_dmabuf(con->gl, dmabuf,
+                                           have_hot, hot_x, hot_y);
+    }
+}
+
+void dpy_gl_cursor_position(QemuConsole *con,
+                            uint32_t pos_x, uint32_t pos_y)
+{
+    assert(con->gl);
+
+    if (con->gl->ops->dpy_gl_cursor_position) {
+        con->gl->ops->dpy_gl_cursor_position(con->gl, pos_x, pos_y);
+    }
+}
+
+void dpy_gl_release_dmabuf(QemuConsole *con,
+                          QemuDmaBuf *dmabuf)
+{
+    assert(con->gl);
+
+    if (con->gl->ops->dpy_gl_release_dmabuf) {
+        con->gl->ops->dpy_gl_release_dmabuf(con->gl, dmabuf);
+    }
+}
+
+void dpy_gl_update(QemuConsole *con,
+                   uint32_t x, uint32_t y, uint32_t w, uint32_t h)
+{
+    assert(con->gl);
+    con->gl->ops->dpy_gl_update(con->gl, x, y, w, h);
+}
+
+/***********************************************************/
+/* register display */
+
+/* console.c internal use only */
+static DisplayState *get_alloc_displaystate(void)
+{
+    if (!display_state) {
+        display_state = g_new0(DisplayState, 1);
+        cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
+                                    text_console_update_cursor, NULL);
+    }
+    return display_state;
+}
+
+/*
+ * Called by main(), after creating QemuConsoles
+ * and before initializing ui (sdl/vnc/...).
+ */
+DisplayState *init_displaystate(void)
+{
+    gchar *name;
+    QemuConsole *con;
+
+    get_alloc_displaystate();
+    QTAILQ_FOREACH(con, &consoles, next) {
+        if (con->console_type != GRAPHIC_CONSOLE &&
+            con->ds == NULL) {
+            text_console_do_init(con->chr, display_state);
+        }
+
+        /* Hook up into the qom tree here (not in new_console()), once
+         * all QemuConsoles are created and the order / numbering
+         * doesn't change any more */
+        name = g_strdup_printf("console[%d]", con->index);
+        object_property_add_child(container_get(object_get_root(), "/backend"),
+                                  name, OBJECT(con));
+        g_free(name);
+    }
+
+    return display_state;
+}
+
+void graphic_console_set_hwops(QemuConsole *con,
+                               const GraphicHwOps *hw_ops,
+                               void *opaque)
+{
+    con->hw_ops = hw_ops;
+    con->hw = opaque;
+}
+
+QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
+                                  const GraphicHwOps *hw_ops,
+                                  void *opaque)
+{
+    static const char noinit[] =
+        "Guest has not initialized the display (yet).";
+    int width = 640;
+    int height = 480;
+    QemuConsole *s;
+    DisplayState *ds;
+    DisplaySurface *surface;
+
+    ds = get_alloc_displaystate();
+    s = qemu_console_lookup_unused();
+    if (s) {
+        trace_console_gfx_reuse(s->index);
+        if (s->surface) {
+            width = surface_width(s->surface);
+            height = surface_height(s->surface);
+        }
+    } else {
+        trace_console_gfx_new();
+        s = new_console(ds, GRAPHIC_CONSOLE, head);
+        s->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
+                                   dpy_set_ui_info_timer, s);
+    }
+    graphic_console_set_hwops(s, hw_ops, opaque);
+    if (dev) {
+        object_property_set_link(OBJECT(s), "device", OBJECT(dev),
+                                 &error_abort);
+    }
+
+    surface = qemu_create_placeholder_surface(width, height, noinit);
+    dpy_gfx_replace_surface(s, surface);
+    return s;
+}
+
+static const GraphicHwOps unused_ops = {
+    /* no callbacks */
+};
+
+void graphic_console_close(QemuConsole *con)
+{
+    static const char unplugged[] =
+        "Guest display has been unplugged";
+    DisplaySurface *surface;
+    int width = 640;
+    int height = 480;
+
+    if (con->surface) {
+        width = surface_width(con->surface);
+        height = surface_height(con->surface);
+    }
+
+    trace_console_gfx_close(con->index);
+    object_property_set_link(OBJECT(con), "device", NULL, &error_abort);
+    graphic_console_set_hwops(con, &unused_ops, NULL);
+
+    if (con->gl) {
+        dpy_gl_scanout_disable(con);
+    }
+    surface = qemu_create_placeholder_surface(width, height, unplugged);
+    dpy_gfx_replace_surface(con, surface);
+}
+
+QemuConsole *qemu_console_lookup_by_index(unsigned int index)
+{
+    QemuConsole *con;
+
+    QTAILQ_FOREACH(con, &consoles, next) {
+        if (con->index == index) {
+            return con;
+        }
+    }
+    return NULL;
+}
+
+QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
+{
+    QemuConsole *con;
+    Object *obj;
+    uint32_t h;
+
+    QTAILQ_FOREACH(con, &consoles, next) {
+        obj = object_property_get_link(OBJECT(con),
+                                       "device", &error_abort);
+        if (DEVICE(obj) != dev) {
+            continue;
+        }
+        h = object_property_get_uint(OBJECT(con),
+                                     "head", &error_abort);
+        if (h != head) {
+            continue;
+        }
+        return con;
+    }
+    return NULL;
+}
+
+QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
+                                                uint32_t head, Error **errp)
+{
+    DeviceState *dev;
+    QemuConsole *con;
+
+    dev = qdev_find_recursive(sysbus_get_default(), device_id);
+    if (dev == NULL) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", device_id);
+        return NULL;
+    }
+
+    con = qemu_console_lookup_by_device(dev, head);
+    if (con == NULL) {
+        error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
+                   device_id, head);
+        return NULL;
+    }
+
+    return con;
+}
+
+QemuConsole *qemu_console_lookup_unused(void)
+{
+    QemuConsole *con;
+    Object *obj;
+
+    QTAILQ_FOREACH(con, &consoles, next) {
+        if (con->hw_ops != &unused_ops) {
+            continue;
+        }
+        obj = object_property_get_link(OBJECT(con),
+                                       "device", &error_abort);
+        if (obj != NULL) {
+            continue;
+        }
+        return con;
+    }
+    return NULL;
+}
+
+bool qemu_console_is_visible(QemuConsole *con)
+{
+    return (con == active_console) || (con->dcls > 0);
+}
+
+bool qemu_console_is_graphic(QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con && (con->console_type == GRAPHIC_CONSOLE);
+}
+
+bool qemu_console_is_fixedsize(QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con && (con->console_type != TEXT_CONSOLE);
+}
+
+bool qemu_console_is_gl_blocked(QemuConsole *con)
+{
+    assert(con != NULL);
+    return con->gl_block;
+}
+
+char *qemu_console_get_label(QemuConsole *con)
+{
+    if (con->console_type == GRAPHIC_CONSOLE) {
+        if (con->device) {
+            return g_strdup(object_get_typename(con->device));
+        }
+        return g_strdup("VGA");
+    } else {
+        if (con->chr && con->chr->label) {
+            return g_strdup(con->chr->label);
+        }
+        return g_strdup_printf("vc%d", con->index);
+    }
+}
+
+int qemu_console_get_index(QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con ? con->index : -1;
+}
+
+uint32_t qemu_console_get_head(QemuConsole *con)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con ? con->head : -1;
+}
+
+int qemu_console_get_width(QemuConsole *con, int fallback)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con ? surface_width(con->surface) : fallback;
+}
+
+int qemu_console_get_height(QemuConsole *con, int fallback)
+{
+    if (con == NULL) {
+        con = active_console;
+    }
+    return con ? surface_height(con->surface) : fallback;
+}
+
+static void vc_chr_accept_input(Chardev *chr)
+{
+    VCChardev *drv = VC_CHARDEV(chr);
+    QemuConsole *s = drv->console;
+
+    kbd_send_chars(s);
+}
+
+static void vc_chr_set_echo(Chardev *chr, bool echo)
+{
+    VCChardev *drv = VC_CHARDEV(chr);
+    QemuConsole *s = drv->console;
+
+    s->echo = echo;
+}
+
+static void text_console_update_cursor_timer(void)
+{
+    timer_mod(cursor_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
+              + CONSOLE_CURSOR_PERIOD / 2);
+}
+
+static void text_console_update_cursor(void *opaque)
+{
+    QemuConsole *s;
+    int count = 0;
+
+    cursor_visible_phase = !cursor_visible_phase;
+
+    QTAILQ_FOREACH(s, &consoles, next) {
+        if (qemu_console_is_graphic(s) ||
+            !qemu_console_is_visible(s)) {
+            continue;
+        }
+        count++;
+        graphic_hw_invalidate(s);
+    }
+
+    if (count) {
+        text_console_update_cursor_timer();
+    }
+}
+
+static const GraphicHwOps text_console_ops = {
+    .invalidate  = text_console_invalidate,
+    .text_update = text_console_update,
+};
+
+static void text_console_do_init(Chardev *chr, DisplayState *ds)
+{
+    VCChardev *drv = VC_CHARDEV(chr);
+    QemuConsole *s = drv->console;
+    int g_width = 80 * FONT_WIDTH;
+    int g_height = 24 * FONT_HEIGHT;
+
+    fifo8_create(&s->out_fifo, 16);
+    s->ds = ds;
+
+    s->y_displayed = 0;
+    s->y_base = 0;
+    s->total_height = DEFAULT_BACKSCROLL;
+    s->x = 0;
+    s->y = 0;
+    if (!s->surface) {
+        if (active_console && active_console->surface) {
+            g_width = surface_width(active_console->surface);
+            g_height = surface_height(active_console->surface);
+        }
+        s->surface = qemu_create_displaysurface(g_width, g_height);
+    }
+
+    s->hw_ops = &text_console_ops;
+    s->hw = s;
+
+    /* Set text attribute defaults */
+    s->t_attrib_default.bold = 0;
+    s->t_attrib_default.uline = 0;
+    s->t_attrib_default.blink = 0;
+    s->t_attrib_default.invers = 0;
+    s->t_attrib_default.unvisible = 0;
+    s->t_attrib_default.fgcol = QEMU_COLOR_WHITE;
+    s->t_attrib_default.bgcol = QEMU_COLOR_BLACK;
+    /* set current text attributes to default */
+    s->t_attrib = s->t_attrib_default;
+    text_console_resize(s);
+
+    if (chr->label) {
+        char *msg;
+
+        s->t_attrib.bgcol = QEMU_COLOR_BLUE;
+        msg = g_strdup_printf("%s console\r\n", chr->label);
+        vc_chr_write(chr, (uint8_t *)msg, strlen(msg));
+        g_free(msg);
+        s->t_attrib = s->t_attrib_default;
+    }
+
+    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
+}
+
+static void vc_chr_open(Chardev *chr,
+                        ChardevBackend *backend,
+                        bool *be_opened,
+                        Error **errp)
+{
+    ChardevVC *vc = backend->u.vc.data;
+    VCChardev *drv = VC_CHARDEV(chr);
+    QemuConsole *s;
+    unsigned width = 0;
+    unsigned height = 0;
+
+    if (vc->has_width) {
+        width = vc->width;
+    } else if (vc->has_cols) {
+        width = vc->cols * FONT_WIDTH;
+    }
+
+    if (vc->has_height) {
+        height = vc->height;
+    } else if (vc->has_rows) {
+        height = vc->rows * FONT_HEIGHT;
+    }
+
+    trace_console_txt_new(width, height);
+    if (width == 0 || height == 0) {
+        s = new_console(NULL, TEXT_CONSOLE, 0);
+    } else {
+        s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE, 0);
+        s->surface = qemu_create_displaysurface(width, height);
+    }
+
+    if (!s) {
+        error_setg(errp, "cannot create text console");
+        return;
+    }
+
+    s->chr = chr;
+    drv->console = s;
+
+    if (display_state) {
+        text_console_do_init(chr, display_state);
+    }
+
+    /* console/chardev init sometimes completes elsewhere in a 2nd
+     * stage, so defer OPENED events until they are fully initialized
+     */
+    *be_opened = false;
+}
+
+void qemu_console_resize(QemuConsole *s, int width, int height)
+{
+    DisplaySurface *surface;
+
+    assert(s->console_type == GRAPHIC_CONSOLE);
+
+    if (s->surface && (s->surface->flags & QEMU_ALLOCATED_FLAG) &&
+        pixman_image_get_width(s->surface->image) == width &&
+        pixman_image_get_height(s->surface->image) == height) {
+        return;
+    }
+
+    surface = qemu_create_displaysurface(width, height);
+    dpy_gfx_replace_surface(s, surface);
+}
+
+DisplaySurface *qemu_console_surface(QemuConsole *console)
+{
+    return console->surface;
+}
+
+PixelFormat qemu_default_pixelformat(int bpp)
+{
+    pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
+    PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
+    return pf;
+}
+
+static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
+
+void qemu_display_register(QemuDisplay *ui)
+{
+    assert(ui->type < DISPLAY_TYPE__MAX);
+    dpys[ui->type] = ui;
+}
+
+bool qemu_display_find_default(DisplayOptions *opts)
+{
+    static DisplayType prio[] = {
+#if defined(CONFIG_GTK)
+        DISPLAY_TYPE_GTK,
+#endif
+#if defined(CONFIG_SDL)
+        DISPLAY_TYPE_SDL,
+#endif
+#if defined(CONFIG_COCOA)
+        DISPLAY_TYPE_COCOA
+#endif
+    };
+    int i;
+
+    for (i = 0; i < (int)ARRAY_SIZE(prio); i++) {
+        if (dpys[prio[i]] == NULL) {
+            ui_module_load_one(DisplayType_str(prio[i]));
+        }
+        if (dpys[prio[i]] == NULL) {
+            continue;
+        }
+        opts->type = prio[i];
+        return true;
+    }
+    return false;
+}
+
+void qemu_display_early_init(DisplayOptions *opts)
+{
+    assert(opts->type < DISPLAY_TYPE__MAX);
+    if (opts->type == DISPLAY_TYPE_NONE) {
+        return;
+    }
+    if (dpys[opts->type] == NULL) {
+        ui_module_load_one(DisplayType_str(opts->type));
+    }
+    if (dpys[opts->type] == NULL) {
+        error_report("Display '%s' is not available.",
+                     DisplayType_str(opts->type));
+        exit(1);
+    }
+    if (dpys[opts->type]->early_init) {
+        dpys[opts->type]->early_init(opts);
+    }
+}
+
+void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
+{
+    assert(opts->type < DISPLAY_TYPE__MAX);
+    if (opts->type == DISPLAY_TYPE_NONE) {
+        return;
+    }
+    assert(dpys[opts->type] != NULL);
+    dpys[opts->type]->init(ds, opts);
+}
+
+void qemu_display_help(void)
+{
+    int idx;
+
+    printf("Available display backend types:\n");
+    printf("none\n");
+    for (idx = DISPLAY_TYPE_NONE; idx < DISPLAY_TYPE__MAX; idx++) {
+        if (!dpys[idx]) {
+            ui_module_load_one(DisplayType_str(idx));
+        }
+        if (dpys[idx]) {
+            printf("%s\n",  DisplayType_str(dpys[idx]->type));
+        }
+    }
+}
+
+void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
+{
+    int val;
+    ChardevVC *vc;
+
+    backend->type = CHARDEV_BACKEND_KIND_VC;
+    vc = backend->u.vc.data = g_new0(ChardevVC, 1);
+    qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
+
+    val = qemu_opt_get_number(opts, "width", 0);
+    if (val != 0) {
+        vc->has_width = true;
+        vc->width = val;
+    }
+
+    val = qemu_opt_get_number(opts, "height", 0);
+    if (val != 0) {
+        vc->has_height = true;
+        vc->height = val;
+    }
+
+    val = qemu_opt_get_number(opts, "cols", 0);
+    if (val != 0) {
+        vc->has_cols = true;
+        vc->cols = val;
+    }
+
+    val = qemu_opt_get_number(opts, "rows", 0);
+    if (val != 0) {
+        vc->has_rows = true;
+        vc->rows = val;
+    }
+}
+
+static const TypeInfo qemu_console_info = {
+    .name = TYPE_QEMU_CONSOLE,
+    .parent = TYPE_OBJECT,
+    .instance_size = sizeof(QemuConsole),
+    .class_size = sizeof(QemuConsoleClass),
+};
+
+static void char_vc_class_init(ObjectClass *oc, void *data)
+{
+    ChardevClass *cc = CHARDEV_CLASS(oc);
+
+    cc->parse = qemu_chr_parse_vc;
+    cc->open = vc_chr_open;
+    cc->chr_write = vc_chr_write;
+    cc->chr_accept_input = vc_chr_accept_input;
+    cc->chr_set_echo = vc_chr_set_echo;
+}
+
+static const TypeInfo char_vc_type_info = {
+    .name = TYPE_CHARDEV_VC,
+    .parent = TYPE_CHARDEV,
+    .instance_size = sizeof(VCChardev),
+    .class_init = char_vc_class_init,
+};
+
+void qemu_console_early_init(void)
+{
+    /* set the default vc driver */
+    if (!object_class_by_name(TYPE_CHARDEV_VC)) {
+        type_register(&char_vc_type_info);
+    }
+}
+
+static void register_types(void)
+{
+    type_register_static(&qemu_console_info);
+}
+
+type_init(register_types);