ui/console.c

   1 /*
   2  * QEMU graphical console
   3  *
   4  * Copyright (c) 2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "ui/console.h"
  27 #include "hw/qdev-core.h"
  28 #include "qapi/error.h"
  29 #include "qapi/qapi-commands-ui.h"
  30 #include "qemu/module.h"
  31 #include "qemu/option.h"
  32 #include "qemu/timer.h"
  33 #include "chardev/char-fe.h"
  34 #include "trace.h"
  35 #include "exec/memory.h"
  36 #include "io/channel-file.h"
  37 #include "qom/object.h"
  38
  39 #define DEFAULT_BACKSCROLL 512
  40 #define CONSOLE_CURSOR_PERIOD 500
  41
  42 typedef struct TextAttributes {
  43     uint8_t fgcol:4;
  44     uint8_t bgcol:4;
  45     uint8_t bold:1;
  46     uint8_t uline:1;
  47     uint8_t blink:1;
  48     uint8_t invers:1;
  49     uint8_t unvisible:1;
  50 } TextAttributes;
  51
  52 typedef struct TextCell {
  53     uint8_t ch;
  54     TextAttributes t_attrib;
  55 } TextCell;
  56
  57 #define MAX_ESC_PARAMS 3
  58
  59 enum TTYState {
  60     TTY_STATE_NORM,
  61     TTY_STATE_ESC,
  62     TTY_STATE_CSI,
  63 };
  64
  65 typedef struct QEMUFIFO {
  66     uint8_t *buf;
  67     int buf_size;
  68     int count, wptr, rptr;
  69 } QEMUFIFO;
  70
  71 static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
  72 {
  73     int l, len;
  74
  75     l = f->buf_size - f->count;
  76     if (len1 > l)
  77         len1 = l;
  78     len = len1;
  79     while (len > 0) {
  80         l = f->buf_size - f->wptr;
  81         if (l > len)
  82             l = len;
  83         memcpy(f->buf + f->wptr, buf, l);
  84         f->wptr += l;
  85         if (f->wptr >= f->buf_size)
  86             f->wptr = 0;
  87         buf += l;
  88         len -= l;
  89     }
  90     f->count += len1;
  91     return len1;
  92 }
  93
  94 static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
  95 {
  96     int l, len;
  97
  98     if (len1 > f->count)
  99         len1 = f->count;
 100     len = len1;
 101     while (len > 0) {
 102         l = f->buf_size - f->rptr;
 103         if (l > len)
 104             l = len;
 105         memcpy(buf, f->buf + f->rptr, l);
 106         f->rptr += l;
 107         if (f->rptr >= f->buf_size)
 108             f->rptr = 0;
 109         buf += l;
 110         len -= l;
 111     }
 112     f->count -= len1;
 113     return len1;
 114 }
 115
 116 typedef enum {
 117     GRAPHIC_CONSOLE,
 118     TEXT_CONSOLE,
 119     TEXT_CONSOLE_FIXED_SIZE
 120 } console_type_t;
 121
 122 struct QemuConsole {
 123     Object parent;
 124
 125     int index;
 126     console_type_t console_type;
 127     DisplayState *ds;
 128     DisplaySurface *surface;
 129     int dcls;
 130     DisplayChangeListener *gl;
 131     bool gl_block;
 132     int window_id;
 133
 134     /* Graphic console state.  */
 135     Object *device;
 136     uint32_t head;
 137     QemuUIInfo ui_info;
 138     QEMUTimer *ui_timer;
 139     const GraphicHwOps *hw_ops;
 140     void *hw;
 141
 142     /* Text console state */
 143     int width;
 144     int height;
 145     int total_height;
 146     int backscroll_height;
 147     int x, y;
 148     int x_saved, y_saved;
 149     int y_displayed;
 150     int y_base;
 151     TextAttributes t_attrib_default; /* default text attributes */
 152     TextAttributes t_attrib; /* currently active text attributes */
 153     TextCell *cells;
 154     int text_x[2], text_y[2], cursor_invalidate;
 155     int echo;
 156
 157     int update_x0;
 158     int update_y0;
 159     int update_x1;
 160     int update_y1;
 161
 162     enum TTYState state;
 163     int esc_params[MAX_ESC_PARAMS];
 164     int nb_esc_params;
 165
 166     Chardev *chr;
 167     /* fifo for key pressed */
 168     QEMUFIFO out_fifo;
 169     uint8_t out_fifo_buf[16];
 170     QEMUTimer *kbd_timer;
 171     CoQueue dump_queue;
 172
 173     QTAILQ_ENTRY(QemuConsole) next;
 174 };
 175
 176 struct DisplayState {
 177     QEMUTimer *gui_timer;
 178     uint64_t last_update;
 179     uint64_t update_interval;
 180     bool refreshing;
 181     bool have_gfx;
 182     bool have_text;
 183
 184     QLIST_HEAD(, DisplayChangeListener) listeners;
 185 };
 186
 187 static DisplayState *display_state;
 188 static QemuConsole *active_console;
 189 static QTAILQ_HEAD(, QemuConsole) consoles =
 190     QTAILQ_HEAD_INITIALIZER(consoles);
 191 static bool cursor_visible_phase;
 192 static QEMUTimer *cursor_timer;
 193
 194 static void text_console_do_init(Chardev *chr, DisplayState *ds);
 195 static void dpy_refresh(DisplayState *s);
 196 static DisplayState *get_alloc_displaystate(void);
 197 static void text_console_update_cursor_timer(void);
 198 static void text_console_update_cursor(void *opaque);
 199
 200 static void gui_update(void *opaque)
 201 {
 202     uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
 203     uint64_t dcl_interval;
 204     DisplayState *ds = opaque;
 205     DisplayChangeListener *dcl;
 206     QemuConsole *con;
 207
 208     ds->refreshing = true;
 209     dpy_refresh(ds);
 210     ds->refreshing = false;
 211
 212     QLIST_FOREACH(dcl, &ds->listeners, next) {
 213         dcl_interval = dcl->update_interval ?
 214             dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
 215         if (interval > dcl_interval) {
 216             interval = dcl_interval;
 217         }
 218     }
 219     if (ds->update_interval != interval) {
 220         ds->update_interval = interval;
 221         QTAILQ_FOREACH(con, &consoles, next) {
 222             if (con->hw_ops->update_interval) {
 223                 con->hw_ops->update_interval(con->hw, interval);
 224             }
 225         }
 226         trace_console_refresh(interval);
 227     }
 228     ds->last_update = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
 229     timer_mod(ds->gui_timer, ds->last_update + interval);
 230 }
 231
 232 static void gui_setup_refresh(DisplayState *ds)
 233 {
 234     DisplayChangeListener *dcl;
 235     bool need_timer = false;
 236     bool have_gfx = false;
 237     bool have_text = false;
 238
 239     QLIST_FOREACH(dcl, &ds->listeners, next) {
 240         if (dcl->ops->dpy_refresh != NULL) {
 241             need_timer = true;
 242         }
 243         if (dcl->ops->dpy_gfx_update != NULL) {
 244             have_gfx = true;
 245         }
 246         if (dcl->ops->dpy_text_update != NULL) {
 247             have_text = true;
 248         }
 249     }
 250
 251     if (need_timer && ds->gui_timer == NULL) {
 252         ds->gui_timer = timer_new_ms(QEMU_CLOCK_REALTIME, gui_update, ds);
 253         timer_mod(ds->gui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
 254     }
 255     if (!need_timer && ds->gui_timer != NULL) {
 256         timer_del(ds->gui_timer);
 257         timer_free(ds->gui_timer);
 258         ds->gui_timer = NULL;
 259     }
 260
 261     ds->have_gfx = have_gfx;
 262     ds->have_text = have_text;
 263 }
 264
 265 void graphic_hw_update_done(QemuConsole *con)
 266 {
 267     if (con) {
 268         qemu_co_queue_restart_all(&con->dump_queue);
 269     }
 270 }
 271
 272 void graphic_hw_update(QemuConsole *con)
 273 {
 274     bool async = false;
 275     con = con ? con : active_console;
 276     if (!con) {
 277         return;
 278     }
 279     if (con->hw_ops->gfx_update) {
 280         con->hw_ops->gfx_update(con->hw);
 281         async = con->hw_ops->gfx_update_async;
 282     }
 283     if (!async) {
 284         graphic_hw_update_done(con);
 285     }
 286 }
 287
 288 void graphic_hw_gl_block(QemuConsole *con, bool block)
 289 {
 290     assert(con != NULL);
 291
 292     con->gl_block = block;
 293     if (con->hw_ops->gl_block) {
 294         con->hw_ops->gl_block(con->hw, block);
 295     }
 296 }
 297
 298 int qemu_console_get_window_id(QemuConsole *con)
 299 {
 300     return con->window_id;
 301 }
 302
 303 void qemu_console_set_window_id(QemuConsole *con, int window_id)
 304 {
 305     con->window_id = window_id;
 306 }
 307
 308 void graphic_hw_invalidate(QemuConsole *con)
 309 {
 310     if (!con) {
 311         con = active_console;
 312     }
 313     if (con && con->hw_ops->invalidate) {
 314         con->hw_ops->invalidate(con->hw);
 315     }
 316 }
 317
 318 static bool ppm_save(int fd, pixman_image_t *image, Error **errp)
 319 {
 320     int width = pixman_image_get_width(image);
 321     int height = pixman_image_get_height(image);
 322     g_autoptr(Object) ioc = OBJECT(qio_channel_file_new_fd(fd));
 323     g_autofree char *header = NULL;
 324     g_autoptr(pixman_image_t) linebuf = NULL;
 325     int y;
 326
 327     trace_ppm_save(fd, image);
 328
 329     header = g_strdup_printf("P6\n%d %d\n%d\n", width, height, 255);
 330     if (qio_channel_write_all(QIO_CHANNEL(ioc),
 331                               header, strlen(header), errp) < 0) {
 332         return false;
 333     }
 334
 335     linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
 336     for (y = 0; y < height; y++) {
 337         qemu_pixman_linebuf_fill(linebuf, image, width, 0, y);
 338         if (qio_channel_write_all(QIO_CHANNEL(ioc),
 339                                   (char *)pixman_image_get_data(linebuf),
 340                                   pixman_image_get_stride(linebuf), errp) < 0) {
 341             return false;
 342         }
 343     }
 344
 345     return true;
 346 }
 347
 348 static void graphic_hw_update_bh(void *con)
 349 {
 350     graphic_hw_update(con);
 351 }
 352
 353 /* Safety: coroutine-only, concurrent-coroutine safe, main thread only */
 354 void coroutine_fn
 355 qmp_screendump(const char *filename, bool has_device, const char *device,
 356                bool has_head, int64_t head, Error **errp)
 357 {
 358     g_autoptr(pixman_image_t) image = NULL;
 359     QemuConsole *con;
 360     DisplaySurface *surface;
 361     int fd;
 362
 363     if (has_device) {
 364         con = qemu_console_lookup_by_device_name(device, has_head ? head : 0,
 365                                                  errp);
 366         if (!con) {
 367             return;
 368         }
 369     } else {
 370         if (has_head) {
 371             error_setg(errp, "'head' must be specified together with 'device'");
 372             return;
 373         }
 374         con = qemu_console_lookup_by_index(0);
 375         if (!con) {
 376             error_setg(errp, "There is no console to take a screendump from");
 377             return;
 378         }
 379     }
 380
 381     if (qemu_co_queue_empty(&con->dump_queue)) {
 382         /* Defer the update, it will restart the pending coroutines */
 383         aio_bh_schedule_oneshot(qemu_get_aio_context(),
 384                                 graphic_hw_update_bh, con);
 385     }
 386     qemu_co_queue_wait(&con->dump_queue, NULL);
 387
 388     /*
 389      * All pending coroutines are woken up, while the BQL is held.  No
 390      * further graphic update are possible until it is released.  Take
 391      * an image ref before that.
 392      */
 393     surface = qemu_console_surface(con);
 394     if (!surface) {
 395         error_setg(errp, "no surface");
 396         return;
 397     }
 398     image = pixman_image_ref(surface->image);
 399
 400     fd = qemu_open_old(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
 401     if (fd == -1) {
 402         error_setg(errp, "failed to open file '%s': %s", filename,
 403                    strerror(errno));
 404         return;
 405     }
 406
 407     /*
 408      * The image content could potentially be updated as the coroutine
 409      * yields and releases the BQL. It could produce corrupted dump, but
 410      * it should be otherwise safe.
 411      */
 412     if (!ppm_save(fd, image, errp)) {
 413         qemu_unlink(filename);
 414     }
 415 }
 416
 417 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
 418 {
 419     if (!con) {
 420         con = active_console;
 421     }
 422     if (con && con->hw_ops->text_update) {
 423         con->hw_ops->text_update(con->hw, chardata);
 424     }
 425 }
 426
 427 static void vga_fill_rect(QemuConsole *con,
 428                           int posx, int posy, int width, int height,
 429                           pixman_color_t color)
 430 {
 431     DisplaySurface *surface = qemu_console_surface(con);
 432     pixman_rectangle16_t rect = {
 433         .x = posx, .y = posy, .width = width, .height = height
 434     };
 435
 436     pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
 437                                  &color, 1, &rect);
 438 }
 439
 440 /* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
 441 static void vga_bitblt(QemuConsole *con,
 442                        int xs, int ys, int xd, int yd, int w, int h)
 443 {
 444     DisplaySurface *surface = qemu_console_surface(con);
 445
 446     pixman_image_composite(PIXMAN_OP_SRC,
 447                            surface->image, NULL, surface->image,
 448                            xs, ys, 0, 0, xd, yd, w, h);
 449 }
 450
 451 /***********************************************************/
 452 /* basic char display */
 453
 454 #define FONT_HEIGHT 16
 455 #define FONT_WIDTH 8
 456
 457 #include "vgafont.h"
 458
 459 #define QEMU_RGB(r, g, b)                                               \
 460     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
 461
 462 static const pixman_color_t color_table_rgb[2][8] = {
 463     {   /* dark */
 464         [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
 465         [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xaa),  /* blue */
 466         [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xaa, 0x00),  /* green */
 467         [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xaa, 0xaa),  /* cyan */
 468         [QEMU_COLOR_RED]     = QEMU_RGB(0xaa, 0x00, 0x00),  /* red */
 469         [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xaa, 0x00, 0xaa),  /* magenta */
 470         [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xaa, 0xaa, 0x00),  /* yellow */
 471         [QEMU_COLOR_WHITE]   = QEMU_RGB(0xaa, 0xaa, 0xaa),  /* white */
 472     },
 473     {   /* bright */
 474         [QEMU_COLOR_BLACK]   = QEMU_RGB(0x00, 0x00, 0x00),  /* black */
 475         [QEMU_COLOR_BLUE]    = QEMU_RGB(0x00, 0x00, 0xff),  /* blue */
 476         [QEMU_COLOR_GREEN]   = QEMU_RGB(0x00, 0xff, 0x00),  /* green */
 477         [QEMU_COLOR_CYAN]    = QEMU_RGB(0x00, 0xff, 0xff),  /* cyan */
 478         [QEMU_COLOR_RED]     = QEMU_RGB(0xff, 0x00, 0x00),  /* red */
 479         [QEMU_COLOR_MAGENTA] = QEMU_RGB(0xff, 0x00, 0xff),  /* magenta */
 480         [QEMU_COLOR_YELLOW]  = QEMU_RGB(0xff, 0xff, 0x00),  /* yellow */
 481         [QEMU_COLOR_WHITE]   = QEMU_RGB(0xff, 0xff, 0xff),  /* white */
 482     }
 483 };
 484
 485 static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
 486                           TextAttributes *t_attrib)
 487 {
 488     static pixman_image_t *glyphs[256];
 489     DisplaySurface *surface = qemu_console_surface(s);
 490     pixman_color_t fgcol, bgcol;
 491
 492     if (t_attrib->invers) {
 493         bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
 494         fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
 495     } else {
 496         fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
 497         bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
 498     }
 499
 500     if (!glyphs[ch]) {
 501         glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
 502     }
 503     qemu_pixman_glyph_render(glyphs[ch], surface->image,
 504                              &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
 505 }
 506
 507 static void text_console_resize(QemuConsole *s)
 508 {
 509     TextCell *cells, *c, *c1;
 510     int w1, x, y, last_width;
 511
 512     last_width = s->width;
 513     s->width = surface_width(s->surface) / FONT_WIDTH;
 514     s->height = surface_height(s->surface) / FONT_HEIGHT;
 515
 516     w1 = last_width;
 517     if (s->width < w1)
 518         w1 = s->width;
 519
 520     cells = g_new(TextCell, s->width * s->total_height + 1);
 521     for(y = 0; y < s->total_height; y++) {
 522         c = &cells[y * s->width];
 523         if (w1 > 0) {
 524             c1 = &s->cells[y * last_width];
 525             for(x = 0; x < w1; x++) {
 526                 *c++ = *c1++;
 527             }
 528         }
 529         for(x = w1; x < s->width; x++) {
 530             c->ch = ' ';
 531             c->t_attrib = s->t_attrib_default;
 532             c++;
 533         }
 534     }
 535     g_free(s->cells);
 536     s->cells = cells;
 537 }
 538
 539 static inline void text_update_xy(QemuConsole *s, int x, int y)
 540 {
 541     s->text_x[0] = MIN(s->text_x[0], x);
 542     s->text_x[1] = MAX(s->text_x[1], x);
 543     s->text_y[0] = MIN(s->text_y[0], y);
 544     s->text_y[1] = MAX(s->text_y[1], y);
 545 }
 546
 547 static void invalidate_xy(QemuConsole *s, int x, int y)
 548 {
 549     if (!qemu_console_is_visible(s)) {
 550         return;
 551     }
 552     if (s->update_x0 > x * FONT_WIDTH)
 553         s->update_x0 = x * FONT_WIDTH;
 554     if (s->update_y0 > y * FONT_HEIGHT)
 555         s->update_y0 = y * FONT_HEIGHT;
 556     if (s->update_x1 < (x + 1) * FONT_WIDTH)
 557         s->update_x1 = (x + 1) * FONT_WIDTH;
 558     if (s->update_y1 < (y + 1) * FONT_HEIGHT)
 559         s->update_y1 = (y + 1) * FONT_HEIGHT;
 560 }
 561
 562 static void update_xy(QemuConsole *s, int x, int y)
 563 {
 564     TextCell *c;
 565     int y1, y2;
 566
 567     if (s->ds->have_text) {
 568         text_update_xy(s, x, y);
 569     }
 570
 571     y1 = (s->y_base + y) % s->total_height;
 572     y2 = y1 - s->y_displayed;
 573     if (y2 < 0) {
 574         y2 += s->total_height;
 575     }
 576     if (y2 < s->height) {
 577         if (x >= s->width) {
 578             x = s->width - 1;
 579         }
 580         c = &s->cells[y1 * s->width + x];
 581         vga_putcharxy(s, x, y2, c->ch,
 582                       &(c->t_attrib));
 583         invalidate_xy(s, x, y2);
 584     }
 585 }
 586
 587 static void console_show_cursor(QemuConsole *s, int show)
 588 {
 589     TextCell *c;
 590     int y, y1;
 591     int x = s->x;
 592
 593     if (s->ds->have_text) {
 594         s->cursor_invalidate = 1;
 595     }
 596
 597     if (x >= s->width) {
 598         x = s->width - 1;
 599     }
 600     y1 = (s->y_base + s->y) % s->total_height;
 601     y = y1 - s->y_displayed;
 602     if (y < 0) {
 603         y += s->total_height;
 604     }
 605     if (y < s->height) {
 606         c = &s->cells[y1 * s->width + x];
 607         if (show && cursor_visible_phase) {
 608             TextAttributes t_attrib = s->t_attrib_default;
 609             t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
 610             vga_putcharxy(s, x, y, c->ch, &t_attrib);
 611         } else {
 612             vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
 613         }
 614         invalidate_xy(s, x, y);
 615     }
 616 }
 617
 618 static void console_refresh(QemuConsole *s)
 619 {
 620     DisplaySurface *surface = qemu_console_surface(s);
 621     TextCell *c;
 622     int x, y, y1;
 623
 624     if (s->ds->have_text) {
 625         s->text_x[0] = 0;
 626         s->text_y[0] = 0;
 627         s->text_x[1] = s->width - 1;
 628         s->text_y[1] = s->height - 1;
 629         s->cursor_invalidate = 1;
 630     }
 631
 632     vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
 633                   color_table_rgb[0][QEMU_COLOR_BLACK]);
 634     y1 = s->y_displayed;
 635     for (y = 0; y < s->height; y++) {
 636         c = s->cells + y1 * s->width;
 637         for (x = 0; x < s->width; x++) {
 638             vga_putcharxy(s, x, y, c->ch,
 639                           &(c->t_attrib));
 640             c++;
 641         }
 642         if (++y1 == s->total_height) {
 643             y1 = 0;
 644         }
 645     }
 646     console_show_cursor(s, 1);
 647     dpy_gfx_update(s, 0, 0,
 648                    surface_width(surface), surface_height(surface));
 649 }
 650
 651 static void console_scroll(QemuConsole *s, int ydelta)
 652 {
 653     int i, y1;
 654
 655     if (ydelta > 0) {
 656         for(i = 0; i < ydelta; i++) {
 657             if (s->y_displayed == s->y_base)
 658                 break;
 659             if (++s->y_displayed == s->total_height)
 660                 s->y_displayed = 0;
 661         }
 662     } else {
 663         ydelta = -ydelta;
 664         i = s->backscroll_height;
 665         if (i > s->total_height - s->height)
 666             i = s->total_height - s->height;
 667         y1 = s->y_base - i;
 668         if (y1 < 0)
 669             y1 += s->total_height;
 670         for(i = 0; i < ydelta; i++) {
 671             if (s->y_displayed == y1)
 672                 break;
 673             if (--s->y_displayed < 0)
 674                 s->y_displayed = s->total_height - 1;
 675         }
 676     }
 677     console_refresh(s);
 678 }
 679
 680 static void console_put_lf(QemuConsole *s)
 681 {
 682     TextCell *c;
 683     int x, y1;
 684
 685     s->y++;
 686     if (s->y >= s->height) {
 687         s->y = s->height - 1;
 688
 689         if (s->y_displayed == s->y_base) {
 690             if (++s->y_displayed == s->total_height)
 691                 s->y_displayed = 0;
 692         }
 693         if (++s->y_base == s->total_height)
 694             s->y_base = 0;
 695         if (s->backscroll_height < s->total_height)
 696             s->backscroll_height++;
 697         y1 = (s->y_base + s->height - 1) % s->total_height;
 698         c = &s->cells[y1 * s->width];
 699         for(x = 0; x < s->width; x++) {
 700             c->ch = ' ';
 701             c->t_attrib = s->t_attrib_default;
 702             c++;
 703         }
 704         if (s->y_displayed == s->y_base) {
 705             if (s->ds->have_text) {
 706                 s->text_x[0] = 0;
 707                 s->text_y[0] = 0;
 708                 s->text_x[1] = s->width - 1;
 709                 s->text_y[1] = s->height - 1;
 710             }
 711
 712             vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
 713                        s->width * FONT_WIDTH,
 714                        (s->height - 1) * FONT_HEIGHT);
 715             vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
 716                           s->width * FONT_WIDTH, FONT_HEIGHT,
 717                           color_table_rgb[0][s->t_attrib_default.bgcol]);
 718             s->update_x0 = 0;
 719             s->update_y0 = 0;
 720             s->update_x1 = s->width * FONT_WIDTH;
 721             s->update_y1 = s->height * FONT_HEIGHT;
 722         }
 723     }
 724 }
 725
 726 /* Set console attributes depending on the current escape codes.
 727  * NOTE: I know this code is not very efficient (checking every color for it
 728  * self) but it is more readable and better maintainable.
 729  */
 730 static void console_handle_escape(QemuConsole *s)
 731 {
 732     int i;
 733
 734     for (i=0; i<s->nb_esc_params; i++) {
 735         switch (s->esc_params[i]) {
 736             case 0: /* reset all console attributes to default */
 737                 s->t_attrib = s->t_attrib_default;
 738                 break;
 739             case 1:
 740                 s->t_attrib.bold = 1;
 741                 break;
 742             case 4:
 743                 s->t_attrib.uline = 1;
 744                 break;
 745             case 5:
 746                 s->t_attrib.blink = 1;
 747                 break;
 748             case 7:
 749                 s->t_attrib.invers = 1;
 750                 break;
 751             case 8:
 752                 s->t_attrib.unvisible = 1;
 753                 break;
 754             case 22:
 755                 s->t_attrib.bold = 0;
 756                 break;
 757             case 24:
 758                 s->t_attrib.uline = 0;
 759                 break;
 760             case 25:
 761                 s->t_attrib.blink = 0;
 762                 break;
 763             case 27:
 764                 s->t_attrib.invers = 0;
 765                 break;
 766             case 28:
 767                 s->t_attrib.unvisible = 0;
 768                 break;
 769             /* set foreground color */
 770             case 30:
 771                 s->t_attrib.fgcol = QEMU_COLOR_BLACK;
 772                 break;
 773             case 31:
 774                 s->t_attrib.fgcol = QEMU_COLOR_RED;
 775                 break;
 776             case 32:
 777                 s->t_attrib.fgcol = QEMU_COLOR_GREEN;
 778                 break;
 779             case 33:
 780                 s->t_attrib.fgcol = QEMU_COLOR_YELLOW;
 781                 break;
 782             case 34:
 783                 s->t_attrib.fgcol = QEMU_COLOR_BLUE;
 784                 break;
 785             case 35:
 786                 s->t_attrib.fgcol = QEMU_COLOR_MAGENTA;
 787                 break;
 788             case 36:
 789                 s->t_attrib.fgcol = QEMU_COLOR_CYAN;
 790                 break;
 791             case 37:
 792                 s->t_attrib.fgcol = QEMU_COLOR_WHITE;
 793                 break;
 794             /* set background color */
 795             case 40:
 796                 s->t_attrib.bgcol = QEMU_COLOR_BLACK;
 797                 break;
 798             case 41:
 799                 s->t_attrib.bgcol = QEMU_COLOR_RED;
 800                 break;
 801             case 42:
 802                 s->t_attrib.bgcol = QEMU_COLOR_GREEN;
 803                 break;
 804             case 43:
 805                 s->t_attrib.bgcol = QEMU_COLOR_YELLOW;
 806                 break;
 807             case 44:
 808                 s->t_attrib.bgcol = QEMU_COLOR_BLUE;
 809                 break;
 810             case 45:
 811                 s->t_attrib.bgcol = QEMU_COLOR_MAGENTA;
 812                 break;
 813             case 46:
 814                 s->t_attrib.bgcol = QEMU_COLOR_CYAN;
 815                 break;
 816             case 47:
 817                 s->t_attrib.bgcol = QEMU_COLOR_WHITE;
 818                 break;
 819         }
 820     }
 821 }
 822
 823 static void console_clear_xy(QemuConsole *s, int x, int y)
 824 {
 825     int y1 = (s->y_base + y) % s->total_height;
 826     if (x >= s->width) {
 827         x = s->width - 1;
 828     }
 829     TextCell *c = &s->cells[y1 * s->width + x];
 830     c->ch = ' ';
 831     c->t_attrib = s->t_attrib_default;
 832     update_xy(s, x, y);
 833 }
 834
 835 static void console_put_one(QemuConsole *s, int ch)
 836 {
 837     TextCell *c;
 838     int y1;
 839     if (s->x >= s->width) {
 840         /* line wrap */
 841         s->x = 0;
 842         console_put_lf(s);
 843     }
 844     y1 = (s->y_base + s->y) % s->total_height;
 845     c = &s->cells[y1 * s->width + s->x];
 846     c->ch = ch;
 847     c->t_attrib = s->t_attrib;
 848     update_xy(s, s->x, s->y);
 849     s->x++;
 850 }
 851
 852 static void console_respond_str(QemuConsole *s, const char *buf)
 853 {
 854     while (*buf) {
 855         console_put_one(s, *buf);
 856         buf++;
 857     }
 858 }
 859
 860 /* set cursor, checking bounds */
 861 static void set_cursor(QemuConsole *s, int x, int y)
 862 {
 863     if (x < 0) {
 864         x = 0;
 865     }
 866     if (y < 0) {
 867         y = 0;
 868     }
 869     if (y >= s->height) {
 870         y = s->height - 1;
 871     }
 872     if (x >= s->width) {
 873         x = s->width - 1;
 874     }
 875
 876     s->x = x;
 877     s->y = y;
 878 }
 879
 880 static void console_putchar(QemuConsole *s, int ch)
 881 {
 882     int i;
 883     int x, y;
 884     char response[40];
 885
 886     switch(s->state) {
 887     case TTY_STATE_NORM:
 888         switch(ch) {
 889         case '\r':  /* carriage return */
 890             s->x = 0;
 891             break;
 892         case '\n':  /* newline */
 893             console_put_lf(s);
 894             break;
 895         case '\b':  /* backspace */
 896             if (s->x > 0)
 897                 s->x--;
 898             break;
 899         case '\t':  /* tabspace */
 900             if (s->x + (8 - (s->x % 8)) > s->width) {
 901                 s->x = 0;
 902                 console_put_lf(s);
 903             } else {
 904                 s->x = s->x + (8 - (s->x % 8));
 905             }
 906             break;
 907         case '\a':  /* alert aka. bell */
 908             /* TODO: has to be implemented */
 909             break;
 910         case 14:
 911             /* SI (shift in), character set 0 (ignored) */
 912             break;
 913         case 15:
 914             /* SO (shift out), character set 1 (ignored) */
 915             break;
 916         case 27:    /* esc (introducing an escape sequence) */
 917             s->state = TTY_STATE_ESC;
 918             break;
 919         default:
 920             console_put_one(s, ch);
 921             break;
 922         }
 923         break;
 924     case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
 925         if (ch == '[') {
 926             for(i=0;i<MAX_ESC_PARAMS;i++)
 927                 s->esc_params[i] = 0;
 928             s->nb_esc_params = 0;
 929             s->state = TTY_STATE_CSI;
 930         } else {
 931             s->state = TTY_STATE_NORM;
 932         }
 933         break;
 934     case TTY_STATE_CSI: /* handle escape sequence parameters */
 935         if (ch >= '0' && ch <= '9') {
 936             if (s->nb_esc_params < MAX_ESC_PARAMS) {
 937                 int *param = &s->esc_params[s->nb_esc_params];
 938                 int digit = (ch - '0');
 939
 940                 *param = (*param <= (INT_MAX - digit) / 10) ?
 941                          *param * 10 + digit : INT_MAX;
 942             }
 943         } else {
 944             if (s->nb_esc_params < MAX_ESC_PARAMS)
 945                 s->nb_esc_params++;
 946             if (ch == ';' || ch == '?') {
 947                 break;
 948             }
 949             trace_console_putchar_csi(s->esc_params[0], s->esc_params[1],
 950                                       ch, s->nb_esc_params);
 951             s->state = TTY_STATE_NORM;
 952             switch(ch) {
 953             case 'A':
 954                 /* move cursor up */
 955                 if (s->esc_params[0] == 0) {
 956                     s->esc_params[0] = 1;
 957                 }
 958                 set_cursor(s, s->x, s->y - s->esc_params[0]);
 959                 break;
 960             case 'B':
 961                 /* move cursor down */
 962                 if (s->esc_params[0] == 0) {
 963                     s->esc_params[0] = 1;
 964                 }
 965                 set_cursor(s, s->x, s->y + s->esc_params[0]);
 966                 break;
 967             case 'C':
 968                 /* move cursor right */
 969                 if (s->esc_params[0] == 0) {
 970                     s->esc_params[0] = 1;
 971                 }
 972                 set_cursor(s, s->x + s->esc_params[0], s->y);
 973                 break;
 974             case 'D':
 975                 /* move cursor left */
 976                 if (s->esc_params[0] == 0) {
 977                     s->esc_params[0] = 1;
 978                 }
 979                 set_cursor(s, s->x - s->esc_params[0], s->y);
 980                 break;
 981             case 'G':
 982                 /* move cursor to column */
 983                 set_cursor(s, s->esc_params[0] - 1, s->y);
 984                 break;
 985             case 'f':
 986             case 'H':
 987                 /* move cursor to row, column */
 988                 set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
 989                 break;
 990             case 'J':
 991                 switch (s->esc_params[0]) {
 992                 case 0:
 993                     /* clear to end of screen */
 994                     for (y = s->y; y < s->height; y++) {
 995                         for (x = 0; x < s->width; x++) {
 996                             if (y == s->y && x < s->x) {
 997                                 continue;
 998                             }
 999                             console_clear_xy(s, x, y);
1000                         }
1001                     }
1002                     break;
1003                 case 1:
1004                     /* clear from beginning of screen */
1005                     for (y = 0; y <= s->y; y++) {
1006                         for (x = 0; x < s->width; x++) {
1007                             if (y == s->y && x > s->x) {
1008                                 break;
1009                             }
1010                             console_clear_xy(s, x, y);
1011                         }
1012                     }
1013                     break;
1014                 case 2:
1015                     /* clear entire screen */
1016                     for (y = 0; y <= s->height; y++) {
1017                         for (x = 0; x < s->width; x++) {
1018                             console_clear_xy(s, x, y);
1019                         }
1020                     }
1021                     break;
1022                 }
1023                 break;
1024             case 'K':
1025                 switch (s->esc_params[0]) {
1026                 case 0:
1027                     /* clear to eol */
1028                     for(x = s->x; x < s->width; x++) {
1029                         console_clear_xy(s, x, s->y);
1030                     }
1031                     break;
1032                 case 1:
1033                     /* clear from beginning of line */
1034                     for (x = 0; x <= s->x && x < s->width; x++) {
1035                         console_clear_xy(s, x, s->y);
1036                     }
1037                     break;
1038                 case 2:
1039                     /* clear entire line */
1040                     for(x = 0; x < s->width; x++) {
1041                         console_clear_xy(s, x, s->y);
1042                     }
1043                     break;
1044                 }
1045                 break;
1046             case 'm':
1047                 console_handle_escape(s);
1048                 break;
1049             case 'n':
1050                 switch (s->esc_params[0]) {
1051                 case 5:
1052                     /* report console status (always succeed)*/
1053                     console_respond_str(s, "\033[0n");
1054                     break;
1055                 case 6:
1056                     /* report cursor position */
1057                     sprintf(response, "\033[%d;%dR",
1058                            (s->y_base + s->y) % s->total_height + 1,
1059                             s->x + 1);
1060                     console_respond_str(s, response);
1061                     break;
1062                 }
1063                 break;
1064             case 's':
1065                 /* save cursor position */
1066                 s->x_saved = s->x;
1067                 s->y_saved = s->y;
1068                 break;
1069             case 'u':
1070                 /* restore cursor position */
1071                 s->x = s->x_saved;
1072                 s->y = s->y_saved;
1073                 break;
1074             default:
1075                 trace_console_putchar_unhandled(ch);
1076                 break;
1077             }
1078             break;
1079         }
1080     }
1081 }
1082
1083 void console_select(unsigned int index)
1084 {
1085     DisplayChangeListener *dcl;
1086     QemuConsole *s;
1087
1088     trace_console_select(index);
1089     s = qemu_console_lookup_by_index(index);
1090     if (s) {
1091         DisplayState *ds = s->ds;
1092
1093         active_console = s;
1094         if (ds->have_gfx) {
1095             QLIST_FOREACH(dcl, &ds->listeners, next) {
1096                 if (dcl->con != NULL) {
1097                     continue;
1098                 }
1099                 if (dcl->ops->dpy_gfx_switch) {
1100                     dcl->ops->dpy_gfx_switch(dcl, s->surface);
1101                 }
1102             }
1103             if (s->surface) {
1104                 dpy_gfx_update(s, 0, 0, surface_width(s->surface),
1105                                surface_height(s->surface));
1106             }
1107         }
1108         if (ds->have_text) {
1109             dpy_text_resize(s, s->width, s->height);
1110         }
1111         text_console_update_cursor(NULL);
1112     }
1113 }
1114
1115 struct VCChardev {
1116     Chardev parent;
1117     QemuConsole *console;
1118 };
1119 typedef struct VCChardev VCChardev;
1120
1121 #define TYPE_CHARDEV_VC "chardev-vc"
1122 DECLARE_INSTANCE_CHECKER(VCChardev, VC_CHARDEV,
1123                          TYPE_CHARDEV_VC)
1124
1125 static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
1126 {
1127     VCChardev *drv = VC_CHARDEV(chr);
1128     QemuConsole *s = drv->console;
1129     int i;
1130
1131     if (!s->ds) {
1132         return 0;
1133     }
1134
1135     s->update_x0 = s->width * FONT_WIDTH;
1136     s->update_y0 = s->height * FONT_HEIGHT;
1137     s->update_x1 = 0;
1138     s->update_y1 = 0;
1139     console_show_cursor(s, 0);
1140     for(i = 0; i < len; i++) {
1141         console_putchar(s, buf[i]);
1142     }
1143     console_show_cursor(s, 1);
1144     if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
1145         dpy_gfx_update(s, s->update_x0, s->update_y0,
1146                        s->update_x1 - s->update_x0,
1147                        s->update_y1 - s->update_y0);
1148     }
1149     return len;
1150 }
1151
1152 static void kbd_send_chars(void *opaque)
1153 {
1154     QemuConsole *s = opaque;
1155     int len;
1156     uint8_t buf[16];
1157
1158     len = qemu_chr_be_can_write(s->chr);
1159     if (len > s->out_fifo.count)
1160         len = s->out_fifo.count;
1161     if (len > 0) {
1162         if (len > sizeof(buf))
1163             len = sizeof(buf);
1164         qemu_fifo_read(&s->out_fifo, buf, len);
1165         qemu_chr_be_write(s->chr, buf, len);
1166     }
1167     /* characters are pending: we send them a bit later (XXX:
1168        horrible, should change char device API) */
1169     if (s->out_fifo.count > 0) {
1170         timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
1171     }
1172 }
1173
1174 /* called when an ascii key is pressed */
1175 void kbd_put_keysym_console(QemuConsole *s, int keysym)
1176 {
1177     uint8_t buf[16], *q;
1178     CharBackend *be;
1179     int c;
1180
1181     if (!s || (s->console_type == GRAPHIC_CONSOLE))
1182         return;
1183
1184     switch(keysym) {
1185     case QEMU_KEY_CTRL_UP:
1186         console_scroll(s, -1);
1187         break;
1188     case QEMU_KEY_CTRL_DOWN:
1189         console_scroll(s, 1);
1190         break;
1191     case QEMU_KEY_CTRL_PAGEUP:
1192         console_scroll(s, -10);
1193         break;
1194     case QEMU_KEY_CTRL_PAGEDOWN:
1195         console_scroll(s, 10);
1196         break;
1197     default:
1198         /* convert the QEMU keysym to VT100 key string */
1199         q = buf;
1200         if (keysym >= 0xe100 && keysym <= 0xe11f) {
1201             *q++ = '\033';
1202             *q++ = '[';
1203             c = keysym - 0xe100;
1204             if (c >= 10)
1205                 *q++ = '0' + (c / 10);
1206             *q++ = '0' + (c % 10);
1207             *q++ = '~';
1208         } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
1209             *q++ = '\033';
1210             *q++ = '[';
1211             *q++ = keysym & 0xff;
1212         } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
1213             vc_chr_write(s->chr, (const uint8_t *) "\r", 1);
1214             *q++ = '\n';
1215         } else {
1216             *q++ = keysym;
1217         }
1218         if (s->echo) {
1219             vc_chr_write(s->chr, buf, q - buf);
1220         }
1221         be = s->chr->be;
1222         if (be && be->chr_read) {
1223             qemu_fifo_write(&s->out_fifo, buf, q - buf);
1224             kbd_send_chars(s);
1225         }
1226         break;
1227     }
1228 }
1229
1230 static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
1231     [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
1232     [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
1233     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,
1234     [Q_KEY_CODE_LEFT]   = QEMU_KEY_LEFT,
1235     [Q_KEY_CODE_HOME]   = QEMU_KEY_HOME,
1236     [Q_KEY_CODE_END]    = QEMU_KEY_END,
1237     [Q_KEY_CODE_PGUP]   = QEMU_KEY_PAGEUP,
1238     [Q_KEY_CODE_PGDN]   = QEMU_KEY_PAGEDOWN,
1239     [Q_KEY_CODE_DELETE] = QEMU_KEY_DELETE,
1240     [Q_KEY_CODE_BACKSPACE] = QEMU_KEY_BACKSPACE,
1241 };
1242
1243 static const int ctrl_qcode_to_keysym[Q_KEY_CODE__MAX] = {
1244     [Q_KEY_CODE_UP]     = QEMU_KEY_CTRL_UP,
1245     [Q_KEY_CODE_DOWN]   = QEMU_KEY_CTRL_DOWN,
1246     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_CTRL_RIGHT,
1247     [Q_KEY_CODE_LEFT]   = QEMU_KEY_CTRL_LEFT,
1248     [Q_KEY_CODE_HOME]   = QEMU_KEY_CTRL_HOME,
1249     [Q_KEY_CODE_END]    = QEMU_KEY_CTRL_END,
1250     [Q_KEY_CODE_PGUP]   = QEMU_KEY_CTRL_PAGEUP,
1251     [Q_KEY_CODE_PGDN]   = QEMU_KEY_CTRL_PAGEDOWN,
1252 };
1253
1254 bool kbd_put_qcode_console(QemuConsole *s, int qcode, bool ctrl)
1255 {
1256     int keysym;
1257
1258     keysym = ctrl ? ctrl_qcode_to_keysym[qcode] : qcode_to_keysym[qcode];
1259     if (keysym == 0) {
1260         return false;
1261     }
1262     kbd_put_keysym_console(s, keysym);
1263     return true;
1264 }
1265
1266 void kbd_put_string_console(QemuConsole *s, const char *str, int len)
1267 {
1268     int i;
1269
1270     for (i = 0; i < len && str[i]; i++) {
1271         kbd_put_keysym_console(s, str[i]);
1272     }
1273 }
1274
1275 void kbd_put_keysym(int keysym)
1276 {
1277     kbd_put_keysym_console(active_console, keysym);
1278 }
1279
1280 static void text_console_invalidate(void *opaque)
1281 {
1282     QemuConsole *s = (QemuConsole *) opaque;
1283
1284     if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
1285         text_console_resize(s);
1286     }
1287     console_refresh(s);
1288 }
1289
1290 static void text_console_update(void *opaque, console_ch_t *chardata)
1291 {
1292     QemuConsole *s = (QemuConsole *) opaque;
1293     int i, j, src;
1294
1295     if (s->text_x[0] <= s->text_x[1]) {
1296         src = (s->y_base + s->text_y[0]) * s->width;
1297         chardata += s->text_y[0] * s->width;
1298         for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
1299             for (j = 0; j < s->width; j++, src++) {
1300                 console_write_ch(chardata ++,
1301                                  ATTR2CHTYPE(s->cells[src].ch,
1302                                              s->cells[src].t_attrib.fgcol,
1303                                              s->cells[src].t_attrib.bgcol,
1304                                              s->cells[src].t_attrib.bold));
1305             }
1306         dpy_text_update(s, s->text_x[0], s->text_y[0],
1307                         s->text_x[1] - s->text_x[0], i - s->text_y[0]);
1308         s->text_x[0] = s->width;
1309         s->text_y[0] = s->height;
1310         s->text_x[1] = 0;
1311         s->text_y[1] = 0;
1312     }
1313     if (s->cursor_invalidate) {
1314         dpy_text_cursor(s, s->x, s->y);
1315         s->cursor_invalidate = 0;
1316     }
1317 }
1318
1319 static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
1320                                 uint32_t head)
1321 {
1322     Object *obj;
1323     QemuConsole *s;
1324     int i;
1325
1326     obj = object_new(TYPE_QEMU_CONSOLE);
1327     s = QEMU_CONSOLE(obj);
1328     qemu_co_queue_init(&s->dump_queue);
1329     s->head = head;
1330     object_property_add_link(obj, "device", TYPE_DEVICE,
1331                              (Object **)&s->device,
1332                              object_property_allow_set_link,
1333                              OBJ_PROP_LINK_STRONG);
1334     object_property_add_uint32_ptr(obj, "head", &s->head,
1335                                    OBJ_PROP_FLAG_READ);
1336
1337     if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
1338         (console_type == GRAPHIC_CONSOLE))) {
1339         active_console = s;
1340     }
1341     s->ds = ds;
1342     s->console_type = console_type;
1343     s->window_id = -1;
1344
1345     if (QTAILQ_EMPTY(&consoles)) {
1346         s->index = 0;
1347         QTAILQ_INSERT_TAIL(&consoles, s, next);
1348     } else if (console_type != GRAPHIC_CONSOLE || phase_check(PHASE_MACHINE_READY)) {
1349         QemuConsole *last = QTAILQ_LAST(&consoles);
1350         s->index = last->index + 1;
1351         QTAILQ_INSERT_TAIL(&consoles, s, next);
1352     } else {
1353         /*
1354          * HACK: Put graphical consoles before text consoles.
1355          *
1356          * Only do that for coldplugged devices.  After initial device
1357          * initialization we will not renumber the consoles any more.
1358          */
1359         QemuConsole *c = QTAILQ_FIRST(&consoles);
1360
1361         while (QTAILQ_NEXT(c, next) != NULL &&
1362                c->console_type == GRAPHIC_CONSOLE) {
1363             c = QTAILQ_NEXT(c, next);
1364         }
1365         if (c->console_type == GRAPHIC_CONSOLE) {
1366             /* have no text consoles */
1367             s->index = c->index + 1;
1368             QTAILQ_INSERT_AFTER(&consoles, c, s, next);
1369         } else {
1370             s->index = c->index;
1371             QTAILQ_INSERT_BEFORE(c, s, next);
1372             /* renumber text consoles */
1373             for (i = s->index + 1; c != NULL; c = QTAILQ_NEXT(c, next), i++) {
1374                 c->index = i;
1375             }
1376         }
1377     }
1378     return s;
1379 }
1380
1381 static void qemu_alloc_display(DisplaySurface *surface, int width, int height)
1382 {
1383     qemu_pixman_image_unref(surface->image);
1384     surface->image = NULL;
1385
1386     surface->format = PIXMAN_x8r8g8b8;
1387     surface->image = pixman_image_create_bits(surface->format,
1388                                               width, height,
1389                                               NULL, width * 4);
1390     assert(surface->image != NULL);
1391
1392     surface->flags = QEMU_ALLOCATED_FLAG;
1393 }
1394
1395 DisplaySurface *qemu_create_displaysurface(int width, int height)
1396 {
1397     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1398
1399     trace_displaysurface_create(surface, width, height);
1400     qemu_alloc_display(surface, width, height);
1401     return surface;
1402 }
1403
1404 DisplaySurface *qemu_create_displaysurface_from(int width, int height,
1405                                                 pixman_format_code_t format,
1406                                                 int linesize, uint8_t *data)
1407 {
1408     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1409
1410     trace_displaysurface_create_from(surface, width, height, format);
1411     surface->format = format;
1412     surface->image = pixman_image_create_bits(surface->format,
1413                                               width, height,
1414                                               (void *)data, linesize);
1415     assert(surface->image != NULL);
1416
1417     return surface;
1418 }
1419
1420 DisplaySurface *qemu_create_displaysurface_pixman(pixman_image_t *image)
1421 {
1422     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1423
1424     trace_displaysurface_create_pixman(surface);
1425     surface->format = pixman_image_get_format(image);
1426     surface->image = pixman_image_ref(image);
1427
1428     return surface;
1429 }
1430
1431 DisplaySurface *qemu_create_message_surface(int w, int h,
1432                                             const char *msg)
1433 {
1434     DisplaySurface *surface = qemu_create_displaysurface(w, h);
1435     pixman_color_t bg = color_table_rgb[0][QEMU_COLOR_BLACK];
1436     pixman_color_t fg = color_table_rgb[0][QEMU_COLOR_WHITE];
1437     pixman_image_t *glyph;
1438     int len, x, y, i;
1439
1440     len = strlen(msg);
1441     x = (w / FONT_WIDTH  - len) / 2;
1442     y = (h / FONT_HEIGHT - 1)   / 2;
1443     for (i = 0; i < len; i++) {
1444         glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]);
1445         qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg,
1446                                  x+i, y, FONT_WIDTH, FONT_HEIGHT);
1447         qemu_pixman_image_unref(glyph);
1448     }
1449     return surface;
1450 }
1451
1452 void qemu_free_displaysurface(DisplaySurface *surface)
1453 {
1454     if (surface == NULL) {
1455         return;
1456     }
1457     trace_displaysurface_free(surface);
1458     qemu_pixman_image_unref(surface->image);
1459     g_free(surface);
1460 }
1461
1462 bool console_has_gl(QemuConsole *con)
1463 {
1464     return con->gl != NULL;
1465 }
1466
1467 bool console_has_gl_dmabuf(QemuConsole *con)
1468 {
1469     return con->gl != NULL && con->gl->ops->dpy_gl_scanout_dmabuf != NULL;
1470 }
1471
1472 void register_displaychangelistener(DisplayChangeListener *dcl)
1473 {
1474     static const char nodev[] =
1475         "This VM has no graphic display device.";
1476     static DisplaySurface *dummy;
1477     QemuConsole *con;
1478
1479     assert(!dcl->ds);
1480
1481     if (dcl->ops->dpy_gl_ctx_create) {
1482         /* display has opengl support */
1483         assert(dcl->con);
1484         if (dcl->con->gl) {
1485             fprintf(stderr, "can't register two opengl displays (%s, %s)\n",
1486                     dcl->ops->dpy_name, dcl->con->gl->ops->dpy_name);
1487             exit(1);
1488         }
1489         dcl->con->gl = dcl;
1490     }
1491
1492     trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
1493     dcl->ds = get_alloc_displaystate();
1494     QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
1495     gui_setup_refresh(dcl->ds);
1496     if (dcl->con) {
1497         dcl->con->dcls++;
1498         con = dcl->con;
1499     } else {
1500         con = active_console;
1501     }
1502     if (dcl->ops->dpy_gfx_switch) {
1503         if (con) {
1504             dcl->ops->dpy_gfx_switch(dcl, con->surface);
1505         } else {
1506             if (!dummy) {
1507                 dummy = qemu_create_message_surface(640, 480, nodev);
1508             }
1509             dcl->ops->dpy_gfx_switch(dcl, dummy);
1510         }
1511     }
1512     text_console_update_cursor(NULL);
1513 }
1514
1515 void update_displaychangelistener(DisplayChangeListener *dcl,
1516                                   uint64_t interval)
1517 {
1518     DisplayState *ds = dcl->ds;
1519
1520     dcl->update_interval = interval;
1521     if (!ds->refreshing && ds->update_interval > interval) {
1522         timer_mod(ds->gui_timer, ds->last_update + interval);
1523     }
1524 }
1525
1526 void unregister_displaychangelistener(DisplayChangeListener *dcl)
1527 {
1528     DisplayState *ds = dcl->ds;
1529     trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
1530     if (dcl->con) {
1531         dcl->con->dcls--;
1532     }
1533     QLIST_REMOVE(dcl, next);
1534     dcl->ds = NULL;
1535     gui_setup_refresh(ds);
1536 }
1537
1538 static void dpy_set_ui_info_timer(void *opaque)
1539 {
1540     QemuConsole *con = opaque;
1541
1542     con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
1543 }
1544
1545 bool dpy_ui_info_supported(QemuConsole *con)
1546 {
1547     if (con == NULL) {
1548         con = active_console;
1549     }
1550
1551     return con->hw_ops->ui_info != NULL;
1552 }
1553
1554 const QemuUIInfo *dpy_get_ui_info(const QemuConsole *con)
1555 {
1556     if (con == NULL) {
1557         con = active_console;
1558     }
1559
1560     return &con->ui_info;
1561 }
1562
1563 int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
1564 {
1565     if (con == NULL) {
1566         con = active_console;
1567     }
1568
1569     if (!dpy_ui_info_supported(con)) {
1570         return -1;
1571     }
1572     if (memcmp(&con->ui_info, info, sizeof(con->ui_info)) == 0) {
1573         /* nothing changed -- ignore */
1574         return 0;
1575     }
1576
1577     /*
1578      * Typically we get a flood of these as the user resizes the window.
1579      * Wait until the dust has settled (one second without updates), then
1580      * go notify the guest.
1581      */
1582     con->ui_info = *info;
1583     timer_mod(con->ui_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
1584     return 0;
1585 }
1586
1587 void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
1588 {
1589     DisplayState *s = con->ds;
1590     DisplayChangeListener *dcl;
1591     int width = w;
1592     int height = h;
1593
1594     if (con->surface) {
1595         width = surface_width(con->surface);
1596         height = surface_height(con->surface);
1597     }
1598     x = MAX(x, 0);
1599     y = MAX(y, 0);
1600     x = MIN(x, width);
1601     y = MIN(y, height);
1602     w = MIN(w, width - x);
1603     h = MIN(h, height - y);
1604
1605     if (!qemu_console_is_visible(con)) {
1606         return;
1607     }
1608     QLIST_FOREACH(dcl, &s->listeners, next) {
1609         if (con != (dcl->con ? dcl->con : active_console)) {
1610             continue;
1611         }
1612         if (dcl->ops->dpy_gfx_update) {
1613             dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
1614         }
1615     }
1616 }
1617
1618 void dpy_gfx_update_full(QemuConsole *con)
1619 {
1620     if (!con->surface) {
1621         return;
1622     }
1623     dpy_gfx_update(con, 0, 0,
1624                    surface_width(con->surface),
1625                    surface_height(con->surface));
1626 }
1627
1628 void dpy_gfx_replace_surface(QemuConsole *con,
1629                              DisplaySurface *surface)
1630 {
1631     DisplayState *s = con->ds;
1632     DisplaySurface *old_surface = con->surface;
1633     DisplayChangeListener *dcl;
1634
1635     assert(old_surface != surface || surface == NULL);
1636
1637     con->surface = surface;
1638     QLIST_FOREACH(dcl, &s->listeners, next) {
1639         if (con != (dcl->con ? dcl->con : active_console)) {
1640             continue;
1641         }
1642         if (dcl->ops->dpy_gfx_switch) {
1643             dcl->ops->dpy_gfx_switch(dcl, surface);
1644         }
1645     }
1646     qemu_free_displaysurface(old_surface);
1647 }
1648
1649 bool dpy_gfx_check_format(QemuConsole *con,
1650                           pixman_format_code_t format)
1651 {
1652     DisplayChangeListener *dcl;
1653     DisplayState *s = con->ds;
1654
1655     QLIST_FOREACH(dcl, &s->listeners, next) {
1656         if (dcl->con && dcl->con != con) {
1657             /* dcl bound to another console -> skip */
1658             continue;
1659         }
1660         if (dcl->ops->dpy_gfx_check_format) {
1661             if (!dcl->ops->dpy_gfx_check_format(dcl, format)) {
1662                 return false;
1663             }
1664         } else {
1665             /* default is to whitelist native 32 bpp only */
1666             if (format != qemu_default_pixman_format(32, true)) {
1667                 return false;
1668             }
1669         }
1670     }
1671     return true;
1672 }
1673
1674 static void dpy_refresh(DisplayState *s)
1675 {
1676     DisplayChangeListener *dcl;
1677
1678     QLIST_FOREACH(dcl, &s->listeners, next) {
1679         if (dcl->ops->dpy_refresh) {
1680             dcl->ops->dpy_refresh(dcl);
1681         }
1682     }
1683 }
1684
1685 void dpy_text_cursor(QemuConsole *con, int x, int y)
1686 {
1687     DisplayState *s = con->ds;
1688     DisplayChangeListener *dcl;
1689
1690     if (!qemu_console_is_visible(con)) {
1691         return;
1692     }
1693     QLIST_FOREACH(dcl, &s->listeners, next) {
1694         if (con != (dcl->con ? dcl->con : active_console)) {
1695             continue;
1696         }
1697         if (dcl->ops->dpy_text_cursor) {
1698             dcl->ops->dpy_text_cursor(dcl, x, y);
1699         }
1700     }
1701 }
1702
1703 void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
1704 {
1705     DisplayState *s = con->ds;
1706     DisplayChangeListener *dcl;
1707
1708     if (!qemu_console_is_visible(con)) {
1709         return;
1710     }
1711     QLIST_FOREACH(dcl, &s->listeners, next) {
1712         if (con != (dcl->con ? dcl->con : active_console)) {
1713             continue;
1714         }
1715         if (dcl->ops->dpy_text_update) {
1716             dcl->ops->dpy_text_update(dcl, x, y, w, h);
1717         }
1718     }
1719 }
1720
1721 void dpy_text_resize(QemuConsole *con, int w, int h)
1722 {
1723     DisplayState *s = con->ds;
1724     DisplayChangeListener *dcl;
1725
1726     if (!qemu_console_is_visible(con)) {
1727         return;
1728     }
1729     QLIST_FOREACH(dcl, &s->listeners, next) {
1730         if (con != (dcl->con ? dcl->con : active_console)) {
1731             continue;
1732         }
1733         if (dcl->ops->dpy_text_resize) {
1734             dcl->ops->dpy_text_resize(dcl, w, h);
1735         }
1736     }
1737 }
1738
1739 void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
1740 {
1741     DisplayState *s = con->ds;
1742     DisplayChangeListener *dcl;
1743
1744     if (!qemu_console_is_visible(con)) {
1745         return;
1746     }
1747     QLIST_FOREACH(dcl, &s->listeners, next) {
1748         if (con != (dcl->con ? dcl->con : active_console)) {
1749             continue;
1750         }
1751         if (dcl->ops->dpy_mouse_set) {
1752             dcl->ops->dpy_mouse_set(dcl, x, y, on);
1753         }
1754     }
1755 }
1756
1757 void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
1758 {
1759     DisplayState *s = con->ds;
1760     DisplayChangeListener *dcl;
1761
1762     if (!qemu_console_is_visible(con)) {
1763         return;
1764     }
1765     QLIST_FOREACH(dcl, &s->listeners, next) {
1766         if (con != (dcl->con ? dcl->con : active_console)) {
1767             continue;
1768         }
1769         if (dcl->ops->dpy_cursor_define) {
1770             dcl->ops->dpy_cursor_define(dcl, cursor);
1771         }
1772     }
1773 }
1774
1775 bool dpy_cursor_define_supported(QemuConsole *con)
1776 {
1777     DisplayState *s = con->ds;
1778     DisplayChangeListener *dcl;
1779
1780     QLIST_FOREACH(dcl, &s->listeners, next) {
1781         if (dcl->ops->dpy_cursor_define) {
1782             return true;
1783         }
1784     }
1785     return false;
1786 }
1787
1788 QEMUGLContext dpy_gl_ctx_create(QemuConsole *con,
1789                                 struct QEMUGLParams *qparams)
1790 {
1791     assert(con->gl);
1792     return con->gl->ops->dpy_gl_ctx_create(con->gl, qparams);
1793 }
1794
1795 void dpy_gl_ctx_destroy(QemuConsole *con, QEMUGLContext ctx)
1796 {
1797     assert(con->gl);
1798     con->gl->ops->dpy_gl_ctx_destroy(con->gl, ctx);
1799 }
1800
1801 int dpy_gl_ctx_make_current(QemuConsole *con, QEMUGLContext ctx)
1802 {
1803     assert(con->gl);
1804     return con->gl->ops->dpy_gl_ctx_make_current(con->gl, ctx);
1805 }
1806
1807 QEMUGLContext dpy_gl_ctx_get_current(QemuConsole *con)
1808 {
1809     assert(con->gl);
1810     return con->gl->ops->dpy_gl_ctx_get_current(con->gl);
1811 }
1812
1813 void dpy_gl_scanout_disable(QemuConsole *con)
1814 {
1815     assert(con->gl);
1816     if (con->gl->ops->dpy_gl_scanout_disable) {
1817         con->gl->ops->dpy_gl_scanout_disable(con->gl);
1818     } else {
1819         con->gl->ops->dpy_gl_scanout_texture(con->gl, 0, false, 0, 0,
1820                                              0, 0, 0, 0);
1821     }
1822 }
1823
1824 void dpy_gl_scanout_texture(QemuConsole *con,
1825                             uint32_t backing_id,
1826                             bool backing_y_0_top,
1827                             uint32_t backing_width,
1828                             uint32_t backing_height,
1829                             uint32_t x, uint32_t y,
1830                             uint32_t width, uint32_t height)
1831 {
1832     assert(con->gl);
1833     con->gl->ops->dpy_gl_scanout_texture(con->gl, backing_id,
1834                                          backing_y_0_top,
1835                                          backing_width, backing_height,
1836                                          x, y, width, height);
1837 }
1838
1839 void dpy_gl_scanout_dmabuf(QemuConsole *con,
1840                            QemuDmaBuf *dmabuf)
1841 {
1842     assert(con->gl);
1843     con->gl->ops->dpy_gl_scanout_dmabuf(con->gl, dmabuf);
1844 }
1845
1846 void dpy_gl_cursor_dmabuf(QemuConsole *con, QemuDmaBuf *dmabuf,
1847                           bool have_hot, uint32_t hot_x, uint32_t hot_y)
1848 {
1849     assert(con->gl);
1850
1851     if (con->gl->ops->dpy_gl_cursor_dmabuf) {
1852         con->gl->ops->dpy_gl_cursor_dmabuf(con->gl, dmabuf,
1853                                            have_hot, hot_x, hot_y);
1854     }
1855 }
1856
1857 void dpy_gl_cursor_position(QemuConsole *con,
1858                             uint32_t pos_x, uint32_t pos_y)
1859 {
1860     assert(con->gl);
1861
1862     if (con->gl->ops->dpy_gl_cursor_position) {
1863         con->gl->ops->dpy_gl_cursor_position(con->gl, pos_x, pos_y);
1864     }
1865 }
1866
1867 void dpy_gl_release_dmabuf(QemuConsole *con,
1868                           QemuDmaBuf *dmabuf)
1869 {
1870     assert(con->gl);
1871
1872     if (con->gl->ops->dpy_gl_release_dmabuf) {
1873         con->gl->ops->dpy_gl_release_dmabuf(con->gl, dmabuf);
1874     }
1875 }
1876
1877 void dpy_gl_update(QemuConsole *con,
1878                    uint32_t x, uint32_t y, uint32_t w, uint32_t h)
1879 {
1880     assert(con->gl);
1881     con->gl->ops->dpy_gl_update(con->gl, x, y, w, h);
1882 }
1883
1884 /***********************************************************/
1885 /* register display */
1886
1887 /* console.c internal use only */
1888 static DisplayState *get_alloc_displaystate(void)
1889 {
1890     if (!display_state) {
1891         display_state = g_new0(DisplayState, 1);
1892         cursor_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1893                                     text_console_update_cursor, NULL);
1894     }
1895     return display_state;
1896 }
1897
1898 /*
1899  * Called by main(), after creating QemuConsoles
1900  * and before initializing ui (sdl/vnc/...).
1901  */
1902 DisplayState *init_displaystate(void)
1903 {
1904     gchar *name;
1905     QemuConsole *con;
1906
1907     get_alloc_displaystate();
1908     QTAILQ_FOREACH(con, &consoles, next) {
1909         if (con->console_type != GRAPHIC_CONSOLE &&
1910             con->ds == NULL) {
1911             text_console_do_init(con->chr, display_state);
1912         }
1913
1914         /* Hook up into the qom tree here (not in new_console()), once
1915          * all QemuConsoles are created and the order / numbering
1916          * doesn't change any more */
1917         name = g_strdup_printf("console[%d]", con->index);
1918         object_property_add_child(container_get(object_get_root(), "/backend"),
1919                                   name, OBJECT(con));
1920         g_free(name);
1921     }
1922
1923     return display_state;
1924 }
1925
1926 void graphic_console_set_hwops(QemuConsole *con,
1927                                const GraphicHwOps *hw_ops,
1928                                void *opaque)
1929 {
1930     con->hw_ops = hw_ops;
1931     con->hw = opaque;
1932 }
1933
1934 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
1935                                   const GraphicHwOps *hw_ops,
1936                                   void *opaque)
1937 {
1938     static const char noinit[] =
1939         "Guest has not initialized the display (yet).";
1940     int width = 640;
1941     int height = 480;
1942     QemuConsole *s;
1943     DisplayState *ds;
1944     DisplaySurface *surface;
1945
1946     ds = get_alloc_displaystate();
1947     s = qemu_console_lookup_unused();
1948     if (s) {
1949         trace_console_gfx_reuse(s->index);
1950         if (s->surface) {
1951             width = surface_width(s->surface);
1952             height = surface_height(s->surface);
1953         }
1954     } else {
1955         trace_console_gfx_new();
1956         s = new_console(ds, GRAPHIC_CONSOLE, head);
1957         s->ui_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
1958                                    dpy_set_ui_info_timer, s);
1959     }
1960     graphic_console_set_hwops(s, hw_ops, opaque);
1961     if (dev) {
1962         object_property_set_link(OBJECT(s), "device", OBJECT(dev),
1963                                  &error_abort);
1964     }
1965
1966     surface = qemu_create_message_surface(width, height, noinit);
1967     dpy_gfx_replace_surface(s, surface);
1968     return s;
1969 }
1970
1971 static const GraphicHwOps unused_ops = {
1972     /* no callbacks */
1973 };
1974
1975 void graphic_console_close(QemuConsole *con)
1976 {
1977     static const char unplugged[] =
1978         "Guest display has been unplugged";
1979     DisplaySurface *surface;
1980     int width = 640;
1981     int height = 480;
1982
1983     if (con->surface) {
1984         width = surface_width(con->surface);
1985         height = surface_height(con->surface);
1986     }
1987
1988     trace_console_gfx_close(con->index);
1989     object_property_set_link(OBJECT(con), "device", NULL, &error_abort);
1990     graphic_console_set_hwops(con, &unused_ops, NULL);
1991
1992     if (con->gl) {
1993         dpy_gl_scanout_disable(con);
1994     }
1995     surface = qemu_create_message_surface(width, height, unplugged);
1996     dpy_gfx_replace_surface(con, surface);
1997 }
1998
1999 QemuConsole *qemu_console_lookup_by_index(unsigned int index)
2000 {
2001     QemuConsole *con;
2002
2003     QTAILQ_FOREACH(con, &consoles, next) {
2004         if (con->index == index) {
2005             return con;
2006         }
2007     }
2008     return NULL;
2009 }
2010
2011 QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head)
2012 {
2013     QemuConsole *con;
2014     Object *obj;
2015     uint32_t h;
2016
2017     QTAILQ_FOREACH(con, &consoles, next) {
2018         obj = object_property_get_link(OBJECT(con),
2019                                        "device", &error_abort);
2020         if (DEVICE(obj) != dev) {
2021             continue;
2022         }
2023         h = object_property_get_uint(OBJECT(con),
2024                                      "head", &error_abort);
2025         if (h != head) {
2026             continue;
2027         }
2028         return con;
2029     }
2030     return NULL;
2031 }
2032
2033 QemuConsole *qemu_console_lookup_by_device_name(const char *device_id,
2034                                                 uint32_t head, Error **errp)
2035 {
2036     DeviceState *dev;
2037     QemuConsole *con;
2038
2039     dev = qdev_find_recursive(sysbus_get_default(), device_id);
2040     if (dev == NULL) {
2041         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
2042                   "Device '%s' not found", device_id);
2043         return NULL;
2044     }
2045
2046     con = qemu_console_lookup_by_device(dev, head);
2047     if (con == NULL) {
2048         error_setg(errp, "Device %s (head %d) is not bound to a QemuConsole",
2049                    device_id, head);
2050         return NULL;
2051     }
2052
2053     return con;
2054 }
2055
2056 QemuConsole *qemu_console_lookup_unused(void)
2057 {
2058     QemuConsole *con;
2059     Object *obj;
2060
2061     QTAILQ_FOREACH(con, &consoles, next) {
2062         if (con->hw_ops != &unused_ops) {
2063             continue;
2064         }
2065         obj = object_property_get_link(OBJECT(con),
2066                                        "device", &error_abort);
2067         if (obj != NULL) {
2068             continue;
2069         }
2070         return con;
2071     }
2072     return NULL;
2073 }
2074
2075 bool qemu_console_is_visible(QemuConsole *con)
2076 {
2077     return (con == active_console) || (con->dcls > 0);
2078 }
2079
2080 bool qemu_console_is_graphic(QemuConsole *con)
2081 {
2082     if (con == NULL) {
2083         con = active_console;
2084     }
2085     return con && (con->console_type == GRAPHIC_CONSOLE);
2086 }
2087
2088 bool qemu_console_is_fixedsize(QemuConsole *con)
2089 {
2090     if (con == NULL) {
2091         con = active_console;
2092     }
2093     return con && (con->console_type != TEXT_CONSOLE);
2094 }
2095
2096 bool qemu_console_is_gl_blocked(QemuConsole *con)
2097 {
2098     assert(con != NULL);
2099     return con->gl_block;
2100 }
2101
2102 char *qemu_console_get_label(QemuConsole *con)
2103 {
2104     if (con->console_type == GRAPHIC_CONSOLE) {
2105         if (con->device) {
2106             return g_strdup(object_get_typename(con->device));
2107         }
2108         return g_strdup("VGA");
2109     } else {
2110         if (con->chr && con->chr->label) {
2111             return g_strdup(con->chr->label);
2112         }
2113         return g_strdup_printf("vc%d", con->index);
2114     }
2115 }
2116
2117 int qemu_console_get_index(QemuConsole *con)
2118 {
2119     if (con == NULL) {
2120         con = active_console;
2121     }
2122     return con ? con->index : -1;
2123 }
2124
2125 uint32_t qemu_console_get_head(QemuConsole *con)
2126 {
2127     if (con == NULL) {
2128         con = active_console;
2129     }
2130     return con ? con->head : -1;
2131 }
2132
2133 int qemu_console_get_width(QemuConsole *con, int fallback)
2134 {
2135     if (con == NULL) {
2136         con = active_console;
2137     }
2138     return con ? surface_width(con->surface) : fallback;
2139 }
2140
2141 int qemu_console_get_height(QemuConsole *con, int fallback)
2142 {
2143     if (con == NULL) {
2144         con = active_console;
2145     }
2146     return con ? surface_height(con->surface) : fallback;
2147 }
2148
2149 static void vc_chr_set_echo(Chardev *chr, bool echo)
2150 {
2151     VCChardev *drv = VC_CHARDEV(chr);
2152     QemuConsole *s = drv->console;
2153
2154     s->echo = echo;
2155 }
2156
2157 static void text_console_update_cursor_timer(void)
2158 {
2159     timer_mod(cursor_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
2160               + CONSOLE_CURSOR_PERIOD / 2);
2161 }
2162
2163 static void text_console_update_cursor(void *opaque)
2164 {
2165     QemuConsole *s;
2166     int count = 0;
2167
2168     cursor_visible_phase = !cursor_visible_phase;
2169
2170     QTAILQ_FOREACH(s, &consoles, next) {
2171         if (qemu_console_is_graphic(s) ||
2172             !qemu_console_is_visible(s)) {
2173             continue;
2174         }
2175         count++;
2176         graphic_hw_invalidate(s);
2177     }
2178
2179     if (count) {
2180         text_console_update_cursor_timer();
2181     }
2182 }
2183
2184 static const GraphicHwOps text_console_ops = {
2185     .invalidate  = text_console_invalidate,
2186     .text_update = text_console_update,
2187 };
2188
2189 static void text_console_do_init(Chardev *chr, DisplayState *ds)
2190 {
2191     VCChardev *drv = VC_CHARDEV(chr);
2192     QemuConsole *s = drv->console;
2193     int g_width = 80 * FONT_WIDTH;
2194     int g_height = 24 * FONT_HEIGHT;
2195
2196     s->out_fifo.buf = s->out_fifo_buf;
2197     s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
2198     s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
2199     s->ds = ds;
2200
2201     s->y_displayed = 0;
2202     s->y_base = 0;
2203     s->total_height = DEFAULT_BACKSCROLL;
2204     s->x = 0;
2205     s->y = 0;
2206     if (!s->surface) {
2207         if (active_console && active_console->surface) {
2208             g_width = surface_width(active_console->surface);
2209             g_height = surface_height(active_console->surface);
2210         }
2211         s->surface = qemu_create_displaysurface(g_width, g_height);
2212     }
2213
2214     s->hw_ops = &text_console_ops;
2215     s->hw = s;
2216
2217     /* Set text attribute defaults */
2218     s->t_attrib_default.bold = 0;
2219     s->t_attrib_default.uline = 0;
2220     s->t_attrib_default.blink = 0;
2221     s->t_attrib_default.invers = 0;
2222     s->t_attrib_default.unvisible = 0;
2223     s->t_attrib_default.fgcol = QEMU_COLOR_WHITE;
2224     s->t_attrib_default.bgcol = QEMU_COLOR_BLACK;
2225     /* set current text attributes to default */
2226     s->t_attrib = s->t_attrib_default;
2227     text_console_resize(s);
2228
2229     if (chr->label) {
2230         char *msg;
2231
2232         s->t_attrib.bgcol = QEMU_COLOR_BLUE;
2233         msg = g_strdup_printf("%s console\r\n", chr->label);
2234         vc_chr_write(chr, (uint8_t *)msg, strlen(msg));
2235         g_free(msg);
2236         s->t_attrib = s->t_attrib_default;
2237     }
2238
2239     qemu_chr_be_event(chr, CHR_EVENT_OPENED);
2240 }
2241
2242 static void vc_chr_open(Chardev *chr,
2243                         ChardevBackend *backend,
2244                         bool *be_opened,
2245                         Error **errp)
2246 {
2247     ChardevVC *vc = backend->u.vc.data;
2248     VCChardev *drv = VC_CHARDEV(chr);
2249     QemuConsole *s;
2250     unsigned width = 0;
2251     unsigned height = 0;
2252
2253     if (vc->has_width) {
2254         width = vc->width;
2255     } else if (vc->has_cols) {
2256         width = vc->cols * FONT_WIDTH;
2257     }
2258
2259     if (vc->has_height) {
2260         height = vc->height;
2261     } else if (vc->has_rows) {
2262         height = vc->rows * FONT_HEIGHT;
2263     }
2264
2265     trace_console_txt_new(width, height);
2266     if (width == 0 || height == 0) {
2267         s = new_console(NULL, TEXT_CONSOLE, 0);
2268     } else {
2269         s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE, 0);
2270         s->surface = qemu_create_displaysurface(width, height);
2271     }
2272
2273     if (!s) {
2274         error_setg(errp, "cannot create text console");
2275         return;
2276     }
2277
2278     s->chr = chr;
2279     drv->console = s;
2280
2281     if (display_state) {
2282         text_console_do_init(chr, display_state);
2283     }
2284
2285     /* console/chardev init sometimes completes elsewhere in a 2nd
2286      * stage, so defer OPENED events until they are fully initialized
2287      */
2288     *be_opened = false;
2289 }
2290
2291 void qemu_console_resize(QemuConsole *s, int width, int height)
2292 {
2293     DisplaySurface *surface;
2294
2295     assert(s->console_type == GRAPHIC_CONSOLE);
2296
2297     if (s->surface && (s->surface->flags & QEMU_ALLOCATED_FLAG) &&
2298         pixman_image_get_width(s->surface->image) == width &&
2299         pixman_image_get_height(s->surface->image) == height) {
2300         return;
2301     }
2302
2303     surface = qemu_create_displaysurface(width, height);
2304     dpy_gfx_replace_surface(s, surface);
2305 }
2306
2307 DisplaySurface *qemu_console_surface(QemuConsole *console)
2308 {
2309     return console->surface;
2310 }
2311
2312 PixelFormat qemu_default_pixelformat(int bpp)
2313 {
2314     pixman_format_code_t fmt = qemu_default_pixman_format(bpp, true);
2315     PixelFormat pf = qemu_pixelformat_from_pixman(fmt);
2316     return pf;
2317 }
2318
2319 static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
2320
2321 void qemu_display_register(QemuDisplay *ui)
2322 {
2323     assert(ui->type < DISPLAY_TYPE__MAX);
2324     dpys[ui->type] = ui;
2325 }
2326
2327 bool qemu_display_find_default(DisplayOptions *opts)
2328 {
2329     static DisplayType prio[] = {
2330         DISPLAY_TYPE_GTK,
2331         DISPLAY_TYPE_SDL,
2332         DISPLAY_TYPE_COCOA
2333     };
2334     int i;
2335
2336     for (i = 0; i < ARRAY_SIZE(prio); i++) {
2337         if (dpys[prio[i]] == NULL) {
2338             ui_module_load_one(DisplayType_str(prio[i]));
2339         }
2340         if (dpys[prio[i]] == NULL) {
2341             continue;
2342         }
2343         opts->type = prio[i];
2344         return true;
2345     }
2346     return false;
2347 }
2348
2349 void qemu_display_early_init(DisplayOptions *opts)
2350 {
2351     assert(opts->type < DISPLAY_TYPE__MAX);
2352     if (opts->type == DISPLAY_TYPE_NONE) {
2353         return;
2354     }
2355     if (dpys[opts->type] == NULL) {
2356         ui_module_load_one(DisplayType_str(opts->type));
2357     }
2358     if (dpys[opts->type] == NULL) {
2359         error_report("Display '%s' is not available.",
2360                      DisplayType_str(opts->type));
2361         exit(1);
2362     }
2363     if (dpys[opts->type]->early_init) {
2364         dpys[opts->type]->early_init(opts);
2365     }
2366 }
2367
2368 void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
2369 {
2370     assert(opts->type < DISPLAY_TYPE__MAX);
2371     if (opts->type == DISPLAY_TYPE_NONE) {
2372         return;
2373     }
2374     assert(dpys[opts->type] != NULL);
2375     dpys[opts->type]->init(ds, opts);
2376 }
2377
2378 void qemu_display_help(void)
2379 {
2380     int idx;
2381
2382     printf("Available display backend types:\n");
2383     printf("none\n");
2384     for (idx = DISPLAY_TYPE_NONE; idx < DISPLAY_TYPE__MAX; idx++) {
2385         if (!dpys[idx]) {
2386             ui_module_load_one(DisplayType_str(idx));
2387         }
2388         if (dpys[idx]) {
2389             printf("%s\n",  DisplayType_str(dpys[idx]->type));
2390         }
2391     }
2392 }
2393
2394 void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
2395 {
2396     int val;
2397     ChardevVC *vc;
2398
2399     backend->type = CHARDEV_BACKEND_KIND_VC;
2400     vc = backend->u.vc.data = g_new0(ChardevVC, 1);
2401     qemu_chr_parse_common(opts, qapi_ChardevVC_base(vc));
2402
2403     val = qemu_opt_get_number(opts, "width", 0);
2404     if (val != 0) {
2405         vc->has_width = true;
2406         vc->width = val;
2407     }
2408
2409     val = qemu_opt_get_number(opts, "height", 0);
2410     if (val != 0) {
2411         vc->has_height = true;
2412         vc->height = val;
2413     }
2414
2415     val = qemu_opt_get_number(opts, "cols", 0);
2416     if (val != 0) {
2417         vc->has_cols = true;
2418         vc->cols = val;
2419     }
2420
2421     val = qemu_opt_get_number(opts, "rows", 0);
2422     if (val != 0) {
2423         vc->has_rows = true;
2424         vc->rows = val;
2425     }
2426 }
2427
2428 static const TypeInfo qemu_console_info = {
2429     .name = TYPE_QEMU_CONSOLE,
2430     .parent = TYPE_OBJECT,
2431     .instance_size = sizeof(QemuConsole),
2432     .class_size = sizeof(QemuConsoleClass),
2433 };
2434
2435 static void char_vc_class_init(ObjectClass *oc, void *data)
2436 {
2437     ChardevClass *cc = CHARDEV_CLASS(oc);
2438
2439     cc->parse = qemu_chr_parse_vc;
2440     cc->open = vc_chr_open;
2441     cc->chr_write = vc_chr_write;
2442     cc->chr_set_echo = vc_chr_set_echo;
2443 }
2444
2445 static const TypeInfo char_vc_type_info = {
2446     .name = TYPE_CHARDEV_VC,
2447     .parent = TYPE_CHARDEV,
2448     .instance_size = sizeof(VCChardev),
2449     .class_init = char_vc_class_init,
2450 };
2451
2452 void qemu_console_early_init(void)
2453 {
2454     /* set the default vc driver */
2455     if (!object_class_by_name(TYPE_CHARDEV_VC)) {
2456         type_register(&char_vc_type_info);
2457     }
2458 }
2459
2460 static void register_types(void)
2461 {
2462     type_register_static(&qemu_console_info);
2463 }
2464
2465 type_init(register_types);