ui/spice-display.c

   1 /*
   2  * Copyright (C) 2010 Red Hat, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 or
   7  * (at your option) version 3 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "qemu-common.h"
  19 #include "ui/qemu-spice.h"
  20 #include "qemu/timer.h"
  21 #include "qemu/queue.h"
  22 #include "monitor/monitor.h"
  23 #include "ui/console.h"
  24 #include "sysemu/sysemu.h"
  25 #include "trace.h"
  26
  27 #include "ui/spice-display.h"
  28
  29 static int debug = 0;
  30
  31 static void GCC_FMT_ATTR(2, 3) dprint(int level, const char *fmt, ...)
  32 {
  33     va_list args;
  34
  35     if (level <= debug) {
  36         va_start(args, fmt);
  37         vfprintf(stderr, fmt, args);
  38         va_end(args);
  39     }
  40 }
  41
  42 int qemu_spice_rect_is_empty(const QXLRect* r)
  43 {
  44     return r->top == r->bottom || r->left == r->right;
  45 }
  46
  47 void qemu_spice_rect_union(QXLRect *dest, const QXLRect *r)
  48 {
  49     if (qemu_spice_rect_is_empty(r)) {
  50         return;
  51     }
  52
  53     if (qemu_spice_rect_is_empty(dest)) {
  54         *dest = *r;
  55         return;
  56     }
  57
  58     dest->top = MIN(dest->top, r->top);
  59     dest->left = MIN(dest->left, r->left);
  60     dest->bottom = MAX(dest->bottom, r->bottom);
  61     dest->right = MAX(dest->right, r->right);
  62 }
  63
  64 QXLCookie *qxl_cookie_new(int type, uint64_t io)
  65 {
  66     QXLCookie *cookie;
  67
  68     cookie = g_malloc0(sizeof(*cookie));
  69     cookie->type = type;
  70     cookie->io = io;
  71     return cookie;
  72 }
  73
  74 void qemu_spice_add_memslot(SimpleSpiceDisplay *ssd, QXLDevMemSlot *memslot,
  75                             qxl_async_io async)
  76 {
  77     trace_qemu_spice_add_memslot(ssd->qxl.id, memslot->slot_id,
  78                                 memslot->virt_start, memslot->virt_end,
  79                                 async);
  80
  81     if (async != QXL_SYNC) {
  82         spice_qxl_add_memslot_async(&ssd->qxl, memslot,
  83                 (uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
  84                                           QXL_IO_MEMSLOT_ADD_ASYNC));
  85     } else {
  86         spice_qxl_add_memslot(&ssd->qxl, memslot);
  87     }
  88 }
  89
  90 void qemu_spice_del_memslot(SimpleSpiceDisplay *ssd, uint32_t gid, uint32_t sid)
  91 {
  92     trace_qemu_spice_del_memslot(ssd->qxl.id, gid, sid);
  93     spice_qxl_del_memslot(&ssd->qxl, gid, sid);
  94 }
  95
  96 void qemu_spice_create_primary_surface(SimpleSpiceDisplay *ssd, uint32_t id,
  97                                        QXLDevSurfaceCreate *surface,
  98                                        qxl_async_io async)
  99 {
 100     trace_qemu_spice_create_primary_surface(ssd->qxl.id, id, surface, async);
 101     if (async != QXL_SYNC) {
 102         spice_qxl_create_primary_surface_async(&ssd->qxl, id, surface,
 103                 (uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
 104                                           QXL_IO_CREATE_PRIMARY_ASYNC));
 105     } else {
 106         spice_qxl_create_primary_surface(&ssd->qxl, id, surface);
 107     }
 108 }
 109
 110 void qemu_spice_destroy_primary_surface(SimpleSpiceDisplay *ssd,
 111                                         uint32_t id, qxl_async_io async)
 112 {
 113     trace_qemu_spice_destroy_primary_surface(ssd->qxl.id, id, async);
 114     if (async != QXL_SYNC) {
 115         spice_qxl_destroy_primary_surface_async(&ssd->qxl, id,
 116                 (uintptr_t)qxl_cookie_new(QXL_COOKIE_TYPE_IO,
 117                                           QXL_IO_DESTROY_PRIMARY_ASYNC));
 118     } else {
 119         spice_qxl_destroy_primary_surface(&ssd->qxl, id);
 120     }
 121 }
 122
 123 void qemu_spice_wakeup(SimpleSpiceDisplay *ssd)
 124 {
 125     trace_qemu_spice_wakeup(ssd->qxl.id);
 126     spice_qxl_wakeup(&ssd->qxl);
 127 }
 128
 129 static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd,
 130                                          QXLRect *rect)
 131 {
 132     SimpleSpiceUpdate *update;
 133     QXLDrawable *drawable;
 134     QXLImage *image;
 135     QXLCommand *cmd;
 136     int bw, bh;
 137     struct timespec time_space;
 138     pixman_image_t *dest;
 139
 140     trace_qemu_spice_create_update(
 141            rect->left, rect->right,
 142            rect->top, rect->bottom);
 143
 144     update   = g_malloc0(sizeof(*update));
 145     drawable = &update->drawable;
 146     image    = &update->image;
 147     cmd      = &update->ext.cmd;
 148
 149     bw       = rect->right - rect->left;
 150     bh       = rect->bottom - rect->top;
 151     update->bitmap = g_malloc(bw * bh * 4);
 152
 153     drawable->bbox            = *rect;
 154     drawable->clip.type       = SPICE_CLIP_TYPE_NONE;
 155     drawable->effect          = QXL_EFFECT_OPAQUE;
 156     drawable->release_info.id = (uintptr_t)update;
 157     drawable->type            = QXL_DRAW_COPY;
 158     drawable->surfaces_dest[0] = -1;
 159     drawable->surfaces_dest[1] = -1;
 160     drawable->surfaces_dest[2] = -1;
 161     clock_gettime(CLOCK_MONOTONIC, &time_space);
 162     /* time in milliseconds from epoch. */
 163     drawable->mm_time = time_space.tv_sec * 1000
 164                       + time_space.tv_nsec / 1000 / 1000;
 165
 166     drawable->u.copy.rop_descriptor  = SPICE_ROPD_OP_PUT;
 167     drawable->u.copy.src_bitmap      = (uintptr_t)image;
 168     drawable->u.copy.src_area.right  = bw;
 169     drawable->u.copy.src_area.bottom = bh;
 170
 171     QXL_SET_IMAGE_ID(image, QXL_IMAGE_GROUP_DEVICE, ssd->unique++);
 172     image->descriptor.type   = SPICE_IMAGE_TYPE_BITMAP;
 173     image->bitmap.flags      = QXL_BITMAP_DIRECT | QXL_BITMAP_TOP_DOWN;
 174     image->bitmap.stride     = bw * 4;
 175     image->descriptor.width  = image->bitmap.x = bw;
 176     image->descriptor.height = image->bitmap.y = bh;
 177     image->bitmap.data = (uintptr_t)(update->bitmap);
 178     image->bitmap.palette = 0;
 179     image->bitmap.format = SPICE_BITMAP_FMT_32BIT;
 180
 181     dest = pixman_image_create_bits(PIXMAN_x8r8g8b8, bw, bh,
 182                                     (void *)update->bitmap, bw * 4);
 183     pixman_image_composite(PIXMAN_OP_SRC, ssd->surface, NULL, ssd->mirror,
 184                            rect->left, rect->top, 0, 0,
 185                            rect->left, rect->top, bw, bh);
 186     pixman_image_composite(PIXMAN_OP_SRC, ssd->mirror, NULL, dest,
 187                            rect->left, rect->top, 0, 0,
 188                            0, 0, bw, bh);
 189     pixman_image_unref(dest);
 190
 191     cmd->type = QXL_CMD_DRAW;
 192     cmd->data = (uintptr_t)drawable;
 193
 194     QTAILQ_INSERT_TAIL(&ssd->updates, update, next);
 195 }
 196
 197 static void qemu_spice_create_update(SimpleSpiceDisplay *ssd)
 198 {
 199     static const int blksize = 32;
 200     int blocks = (surface_width(ssd->ds) + blksize - 1) / blksize;
 201     int dirty_top[blocks];
 202     int y, yoff, x, xoff, blk, bw;
 203     int bpp = surface_bytes_per_pixel(ssd->ds);
 204     uint8_t *guest, *mirror;
 205
 206     if (qemu_spice_rect_is_empty(&ssd->dirty)) {
 207         return;
 208     };
 209
 210     if (ssd->surface == NULL) {
 211         ssd->surface = pixman_image_ref(ssd->ds->image);
 212         ssd->mirror  = qemu_pixman_mirror_create(ssd->ds->format,
 213                                                  ssd->ds->image);
 214     }
 215
 216     for (blk = 0; blk < blocks; blk++) {
 217         dirty_top[blk] = -1;
 218     }
 219
 220     guest = surface_data(ssd->ds);
 221     mirror = (void *)pixman_image_get_data(ssd->mirror);
 222     for (y = ssd->dirty.top; y < ssd->dirty.bottom; y++) {
 223         yoff = y * surface_stride(ssd->ds);
 224         for (x = ssd->dirty.left; x < ssd->dirty.right; x += blksize) {
 225             xoff = x * bpp;
 226             blk = x / blksize;
 227             bw = MIN(blksize, ssd->dirty.right - x);
 228             if (memcmp(guest + yoff + xoff,
 229                        mirror + yoff + xoff,
 230                        bw * bpp) == 0) {
 231                 if (dirty_top[blk] != -1) {
 232                     QXLRect update = {
 233                         .top    = dirty_top[blk],
 234                         .bottom = y,
 235                         .left   = x,
 236                         .right  = x + bw,
 237                     };
 238                     qemu_spice_create_one_update(ssd, &update);
 239                     dirty_top[blk] = -1;
 240                 }
 241             } else {
 242                 if (dirty_top[blk] == -1) {
 243                     dirty_top[blk] = y;
 244                 }
 245             }
 246         }
 247     }
 248
 249     for (x = ssd->dirty.left; x < ssd->dirty.right; x += blksize) {
 250         blk = x / blksize;
 251         bw = MIN(blksize, ssd->dirty.right - x);
 252         if (dirty_top[blk] != -1) {
 253             QXLRect update = {
 254                 .top    = dirty_top[blk],
 255                 .bottom = ssd->dirty.bottom,
 256                 .left   = x,
 257                 .right  = x + bw,
 258             };
 259             qemu_spice_create_one_update(ssd, &update);
 260             dirty_top[blk] = -1;
 261         }
 262     }
 263
 264     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 265 }
 266
 267 /*
 268  * Called from spice server thread context (via interface_release_resource)
 269  * We do *not* hold the global qemu mutex here, so extra care is needed
 270  * when calling qemu functions.  QEMU interfaces used:
 271  *    - g_free (underlying glibc free is re-entrant).
 272  */
 273 void qemu_spice_destroy_update(SimpleSpiceDisplay *sdpy, SimpleSpiceUpdate *update)
 274 {
 275     g_free(update->bitmap);
 276     g_free(update);
 277 }
 278
 279 void qemu_spice_create_host_memslot(SimpleSpiceDisplay *ssd)
 280 {
 281     QXLDevMemSlot memslot;
 282
 283     dprint(1, "%s/%d:\n", __func__, ssd->qxl.id);
 284
 285     memset(&memslot, 0, sizeof(memslot));
 286     memslot.slot_group_id = MEMSLOT_GROUP_HOST;
 287     memslot.virt_end = ~0;
 288     qemu_spice_add_memslot(ssd, &memslot, QXL_SYNC);
 289 }
 290
 291 void qemu_spice_create_host_primary(SimpleSpiceDisplay *ssd)
 292 {
 293     QXLDevSurfaceCreate surface;
 294
 295     memset(&surface, 0, sizeof(surface));
 296
 297     dprint(1, "%s/%d: %dx%d\n", __func__, ssd->qxl.id,
 298            surface_width(ssd->ds), surface_height(ssd->ds));
 299
 300     surface.format     = SPICE_SURFACE_FMT_32_xRGB;
 301     surface.width      = surface_width(ssd->ds);
 302     surface.height     = surface_height(ssd->ds);
 303     surface.stride     = -surface.width * 4;
 304     surface.mouse_mode = true;
 305     surface.flags      = 0;
 306     surface.type       = 0;
 307     surface.mem        = (uintptr_t)ssd->buf;
 308     surface.group_id   = MEMSLOT_GROUP_HOST;
 309
 310     qemu_spice_create_primary_surface(ssd, 0, &surface, QXL_SYNC);
 311 }
 312
 313 void qemu_spice_destroy_host_primary(SimpleSpiceDisplay *ssd)
 314 {
 315     dprint(1, "%s/%d:\n", __func__, ssd->qxl.id);
 316
 317     qemu_spice_destroy_primary_surface(ssd, 0, QXL_SYNC);
 318 }
 319
 320 void qemu_spice_display_init_common(SimpleSpiceDisplay *ssd)
 321 {
 322     qemu_mutex_init(&ssd->lock);
 323     QTAILQ_INIT(&ssd->updates);
 324     ssd->mouse_x = -1;
 325     ssd->mouse_y = -1;
 326     if (ssd->num_surfaces == 0) {
 327         ssd->num_surfaces = 1024;
 328     }
 329     ssd->bufsize = (16 * 1024 * 1024);
 330     ssd->buf = g_malloc(ssd->bufsize);
 331 }
 332
 333 /* display listener callbacks */
 334
 335 void qemu_spice_display_update(SimpleSpiceDisplay *ssd,
 336                                int x, int y, int w, int h)
 337 {
 338     QXLRect update_area;
 339
 340     dprint(2, "%s/%d: x %d y %d w %d h %d\n", __func__,
 341            ssd->qxl.id, x, y, w, h);
 342     update_area.left = x,
 343     update_area.right = x + w;
 344     update_area.top = y;
 345     update_area.bottom = y + h;
 346
 347     if (qemu_spice_rect_is_empty(&ssd->dirty)) {
 348         ssd->notify++;
 349     }
 350     qemu_spice_rect_union(&ssd->dirty, &update_area);
 351 }
 352
 353 void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
 354                                DisplaySurface *surface)
 355 {
 356     SimpleSpiceUpdate *update;
 357     bool need_destroy;
 358
 359     dprint(1, "%s/%d:\n", __func__, ssd->qxl.id);
 360
 361     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 362     if (ssd->surface) {
 363         pixman_image_unref(ssd->surface);
 364         ssd->surface = NULL;
 365         pixman_image_unref(ssd->mirror);
 366         ssd->mirror = NULL;
 367     }
 368
 369     qemu_mutex_lock(&ssd->lock);
 370     need_destroy = (ssd->ds != NULL);
 371     ssd->ds = surface;
 372     while ((update = QTAILQ_FIRST(&ssd->updates)) != NULL) {
 373         QTAILQ_REMOVE(&ssd->updates, update, next);
 374         qemu_spice_destroy_update(ssd, update);
 375     }
 376     qemu_mutex_unlock(&ssd->lock);
 377     if (need_destroy) {
 378         qemu_spice_destroy_host_primary(ssd);
 379     }
 380     if (ssd->ds) {
 381         qemu_spice_create_host_primary(ssd);
 382     }
 383
 384     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 385     ssd->notify++;
 386 }
 387
 388 void qemu_spice_cursor_refresh_unlocked(SimpleSpiceDisplay *ssd)
 389 {
 390     if (ssd->cursor) {
 391         assert(ssd->dcl.con);
 392         dpy_cursor_define(ssd->dcl.con, ssd->cursor);
 393         cursor_put(ssd->cursor);
 394         ssd->cursor = NULL;
 395     }
 396     if (ssd->mouse_x != -1 && ssd->mouse_y != -1) {
 397         assert(ssd->dcl.con);
 398         dpy_mouse_set(ssd->dcl.con, ssd->mouse_x, ssd->mouse_y, 1);
 399         ssd->mouse_x = -1;
 400         ssd->mouse_y = -1;
 401     }
 402 }
 403
 404 void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd)
 405 {
 406     dprint(3, "%s/%d:\n", __func__, ssd->qxl.id);
 407     graphic_hw_update(ssd->dcl.con);
 408
 409     qemu_mutex_lock(&ssd->lock);
 410     if (QTAILQ_EMPTY(&ssd->updates) && ssd->ds) {
 411         qemu_spice_create_update(ssd);
 412         ssd->notify++;
 413     }
 414     qemu_spice_cursor_refresh_unlocked(ssd);
 415     qemu_mutex_unlock(&ssd->lock);
 416
 417     if (ssd->notify) {
 418         ssd->notify = 0;
 419         qemu_spice_wakeup(ssd);
 420         dprint(2, "%s/%d: notify\n", __func__, ssd->qxl.id);
 421     }
 422 }
 423
 424 /* spice display interface callbacks */
 425
 426 static void interface_attach_worker(QXLInstance *sin, QXLWorker *qxl_worker)
 427 {
 428     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 429
 430     dprint(1, "%s/%d:\n", __func__, ssd->qxl.id);
 431     ssd->worker = qxl_worker;
 432 }
 433
 434 static void interface_set_compression_level(QXLInstance *sin, int level)
 435 {
 436     dprint(1, "%s/%d:\n", __func__, sin->id);
 437     /* nothing to do */
 438 }
 439
 440 static void interface_set_mm_time(QXLInstance *sin, uint32_t mm_time)
 441 {
 442     dprint(3, "%s/%d:\n", __func__, sin->id);
 443     /* nothing to do */
 444 }
 445
 446 static void interface_get_init_info(QXLInstance *sin, QXLDevInitInfo *info)
 447 {
 448     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 449
 450     info->memslot_gen_bits = MEMSLOT_GENERATION_BITS;
 451     info->memslot_id_bits  = MEMSLOT_SLOT_BITS;
 452     info->num_memslots = NUM_MEMSLOTS;
 453     info->num_memslots_groups = NUM_MEMSLOTS_GROUPS;
 454     info->internal_groupslot_id = 0;
 455     info->qxl_ram_size = ssd->bufsize;
 456     info->n_surfaces = ssd->num_surfaces;
 457 }
 458
 459 static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)
 460 {
 461     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 462     SimpleSpiceUpdate *update;
 463     int ret = false;
 464
 465     dprint(3, "%s/%d:\n", __func__, ssd->qxl.id);
 466
 467     qemu_mutex_lock(&ssd->lock);
 468     update = QTAILQ_FIRST(&ssd->updates);
 469     if (update != NULL) {
 470         QTAILQ_REMOVE(&ssd->updates, update, next);
 471         *ext = update->ext;
 472         ret = true;
 473     }
 474     qemu_mutex_unlock(&ssd->lock);
 475
 476     return ret;
 477 }
 478
 479 static int interface_req_cmd_notification(QXLInstance *sin)
 480 {
 481     dprint(1, "%s/%d:\n", __func__, sin->id);
 482     return 1;
 483 }
 484
 485 static void interface_release_resource(QXLInstance *sin,
 486                                        struct QXLReleaseInfoExt ext)
 487 {
 488     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 489     uintptr_t id;
 490
 491     dprint(2, "%s/%d:\n", __func__, ssd->qxl.id);
 492     id = ext.info->id;
 493     qemu_spice_destroy_update(ssd, (void*)id);
 494 }
 495
 496 static int interface_get_cursor_command(QXLInstance *sin, struct QXLCommandExt *ext)
 497 {
 498     dprint(3, "%s:\n", __FUNCTION__);
 499     return false;
 500 }
 501
 502 static int interface_req_cursor_notification(QXLInstance *sin)
 503 {
 504     dprint(1, "%s:\n", __FUNCTION__);
 505     return 1;
 506 }
 507
 508 static void interface_notify_update(QXLInstance *sin, uint32_t update_id)
 509 {
 510     fprintf(stderr, "%s: abort()\n", __FUNCTION__);
 511     abort();
 512 }
 513
 514 static int interface_flush_resources(QXLInstance *sin)
 515 {
 516     fprintf(stderr, "%s: abort()\n", __FUNCTION__);
 517     abort();
 518     return 0;
 519 }
 520
 521 static void interface_update_area_complete(QXLInstance *sin,
 522         uint32_t surface_id,
 523         QXLRect *dirty, uint32_t num_updated_rects)
 524 {
 525     /* should never be called, used in qxl native mode only */
 526     fprintf(stderr, "%s: abort()\n", __func__);
 527     abort();
 528 }
 529
 530 /* called from spice server thread context only */
 531 static void interface_async_complete(QXLInstance *sin, uint64_t cookie_token)
 532 {
 533     /* should never be called, used in qxl native mode only */
 534     fprintf(stderr, "%s: abort()\n", __func__);
 535     abort();
 536 }
 537
 538 static void interface_set_client_capabilities(QXLInstance *sin,
 539                                               uint8_t client_present,
 540                                               uint8_t caps[58])
 541 {
 542     dprint(3, "%s:\n", __func__);
 543 }
 544
 545 static int interface_client_monitors_config(QXLInstance *sin,
 546                                             VDAgentMonitorsConfig *mc)
 547 {
 548     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 549     QemuUIInfo info;
 550     int rc;
 551
 552     /*
 553      * FIXME: multihead is tricky due to the way
 554      * spice has multihead implemented.
 555      */
 556     memset(&info, 0, sizeof(info));
 557     if (mc->num_of_monitors > 0) {
 558         info.width  = mc->monitors[0].width;
 559         info.height = mc->monitors[0].height;
 560     }
 561     rc = dpy_set_ui_info(ssd->dcl.con, &info);
 562     dprint(1, "%s/%d: size %dx%d, rc %d   <---   ==========================\n",
 563            __func__, ssd->qxl.id, info.width, info.height, rc);
 564     if (rc != 0) {
 565         return 0; /* == not supported by guest */
 566     } else {
 567         return 1;
 568     }
 569 }
 570
 571 static const QXLInterface dpy_interface = {
 572     .base.type               = SPICE_INTERFACE_QXL,
 573     .base.description        = "qemu simple display",
 574     .base.major_version      = SPICE_INTERFACE_QXL_MAJOR,
 575     .base.minor_version      = SPICE_INTERFACE_QXL_MINOR,
 576
 577     .attache_worker          = interface_attach_worker,
 578     .set_compression_level   = interface_set_compression_level,
 579     .set_mm_time             = interface_set_mm_time,
 580     .get_init_info           = interface_get_init_info,
 581
 582     /* the callbacks below are called from spice server thread context */
 583     .get_command             = interface_get_command,
 584     .req_cmd_notification    = interface_req_cmd_notification,
 585     .release_resource        = interface_release_resource,
 586     .get_cursor_command      = interface_get_cursor_command,
 587     .req_cursor_notification = interface_req_cursor_notification,
 588     .notify_update           = interface_notify_update,
 589     .flush_resources         = interface_flush_resources,
 590     .async_complete          = interface_async_complete,
 591     .update_area_complete    = interface_update_area_complete,
 592     .set_client_capabilities = interface_set_client_capabilities,
 593     .client_monitors_config  = interface_client_monitors_config,
 594 };
 595
 596 static void display_update(DisplayChangeListener *dcl,
 597                            int x, int y, int w, int h)
 598 {
 599     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 600     qemu_spice_display_update(ssd, x, y, w, h);
 601 }
 602
 603 static void display_switch(DisplayChangeListener *dcl,
 604                            struct DisplaySurface *surface)
 605 {
 606     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 607     qemu_spice_display_switch(ssd, surface);
 608 }
 609
 610 static void display_refresh(DisplayChangeListener *dcl)
 611 {
 612     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 613     qemu_spice_display_refresh(ssd);
 614 }
 615
 616 static const DisplayChangeListenerOps display_listener_ops = {
 617     .dpy_name        = "spice",
 618     .dpy_gfx_update  = display_update,
 619     .dpy_gfx_switch  = display_switch,
 620     .dpy_refresh     = display_refresh,
 621 };
 622
 623 static void qemu_spice_display_init_one(QemuConsole *con)
 624 {
 625     SimpleSpiceDisplay *ssd = g_new0(SimpleSpiceDisplay, 1);
 626
 627     qemu_spice_display_init_common(ssd);
 628
 629     ssd->qxl.base.sif = &dpy_interface.base;
 630     qemu_spice_add_display_interface(&ssd->qxl, con);
 631     assert(ssd->worker);
 632
 633     qemu_spice_create_host_memslot(ssd);
 634
 635     ssd->dcl.ops = &display_listener_ops;
 636     ssd->dcl.con = con;
 637     register_displaychangelistener(&ssd->dcl);
 638 }
 639
 640 void qemu_spice_display_init(void)
 641 {
 642     QemuConsole *con;
 643     int i;
 644
 645     for (i = 0;; i++) {
 646         con = qemu_console_lookup_by_index(i);
 647         if (!con || !qemu_console_is_graphic(con)) {
 648             break;
 649         }
 650         if (qemu_spice_have_display_interface(con)) {
 651             continue;
 652         }
 653         qemu_spice_display_init_one(con);
 654     }
 655 }