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qemu/ui/console.c
Gerd Hoffmann 6fc5183a65 qxl: fix segfault 
Add missing sanity check.
Reproducer: run qemu with "-device qxl" but without "-spice ..."

Fixes: 0d9b90ce5c ("console: make QMP/HMP screendump run in coroutine")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20201124122936.30588-1-kraxel@redhat.com
2020-11-25 12:33:21 +01:00

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/*
* 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/module.h"
#include "qemu/option.h"
#include "qemu/timer.h"
#include "chardev/char-fe.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 struct QEMUFIFO {
uint8_t *buf;
int buf_size;
int count, wptr, rptr;
} QEMUFIFO;
static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
{
int l, len;
l = f->buf_size - f->count;
if (len1 > l)
len1 = l;
len = len1;
while (len > 0) {
l = f->buf_size - f->wptr;
if (l > len)
l = len;
memcpy(f->buf + f->wptr, buf, l);
f->wptr += l;
if (f->wptr >= f->buf_size)
f->wptr = 0;
buf += l;
len -= l;
}
f->count += len1;
return len1;
}
static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
{
int l, len;
if (len1 > f->count)
len1 = f->count;
len = len1;
while (len > 0) {
l = f->buf_size - f->rptr;
if (l > len)
l = len;
memcpy(buf, f->buf + f->rptr, l);
f->rptr += l;
if (f->rptr >= f->buf_size)
f->rptr = 0;
buf += l;
len -= l;
}
f->count -= len1;
return len1;
}
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 */
QEMUFIFO out_fifo;
uint8_t out_fifo_buf[16];
QEMUTimer *kbd_timer;
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_del(ds->gui_timer);
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);
}
}
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(void *opaque)
{
QemuConsole *s = opaque;
int len;
uint8_t buf[16];
len = qemu_chr_be_can_write(s->chr);
if (len > s->out_fifo.count)
len = s->out_fifo.count;
if (len > 0) {
if (len > sizeof(buf))
len = sizeof(buf);
qemu_fifo_read(&s->out_fifo, buf, len);
qemu_chr_be_write(s->chr, buf, len);
}
/* characters are pending: we send them a bit later (XXX:
horrible, should change char device API) */
if (s->out_fifo.count > 0) {
timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
}
}
/* called when an ascii key is pressed */
void kbd_put_keysym_console(QemuConsole *s, int keysym)
{
uint8_t buf[16], *q;
CharBackend *be;
int c;
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);
}
be = s->chr->be;
if (be && be->chr_read) {
qemu_fifo_write(&s->out_fifo, buf, 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 || qdev_hotplug) {
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;
}
static void qemu_alloc_display(DisplaySurface *surface, int width, int height)
{
qemu_pixman_image_unref(surface->image);
surface->image = NULL;
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;
}
DisplaySurface *qemu_create_displaysurface(int width, int height)
{
DisplaySurface *surface = g_new0(DisplaySurface, 1);
trace_displaysurface_create(surface, width, height);
qemu_alloc_display(surface, width, height);
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_message_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);
}
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;
}
bool console_has_gl_dmabuf(QemuConsole *con)
{
return con->gl != NULL && con->gl->ops->dpy_gl_scanout_dmabuf != NULL;
}
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;
}
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_message_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)
{
return con->hw_ops->ui_info != NULL;
}
const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
{
assert(con != NULL);
return &con->ui_info;
}
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
{
assert(con != NULL);
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)
{
DisplayState *s = con->ds;
DisplaySurface *old_surface = con->surface;
DisplayChangeListener *dcl;
assert(old_surface != surface || surface == NULL);
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 whitelist 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);
}
QEMUGLContext dpy_gl_ctx_get_current(QemuConsole *con)
{
assert(con->gl);
return con->gl->ops->dpy_gl_ctx_get_current(con->gl);
}
void dpy_gl_scanout_disable(QemuConsole *con)
{
assert(con->gl);
if (con->gl->ops->dpy_gl_scanout_disable) {
con->gl->ops->dpy_gl_scanout_disable(con->gl);
} else {
con->gl->ops->dpy_gl_scanout_texture(con->gl, 0, false, 0, 0,
0, 0, 0, 0);
}
}
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_message_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_message_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;
}
QemuUIInfo *qemu_console_get_ui_info(QemuConsole *con)
{
assert(con != NULL);
return &con->ui_info;
}
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_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;
s->out_fifo.buf = s->out_fifo_buf;
s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
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[] = {
DISPLAY_TYPE_GTK,
DISPLAY_TYPE_SDL,
DISPLAY_TYPE_COCOA
};
int i;
for (i = 0; i < 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_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);
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