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         ssd->worker->add_memslot(ssd->worker, 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     ssd->worker->del_memslot(ssd->worker, 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         ssd->worker->create_primary_surface(ssd->worker, 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         ssd->worker->destroy_primary_surface(ssd->worker, id);
 120     }
 121 }
 122
 123 void qemu_spice_wakeup(SimpleSpiceDisplay *ssd)
 124 {
 125     trace_qemu_spice_wakeup(ssd->qxl.id);
 126     ssd->worker->wakeup(ssd->worker);
 127 }
 128
 129 static int spice_display_is_running;
 130
 131 void qemu_spice_display_start(void)
 132 {
 133     spice_display_is_running = true;
 134 }
 135
 136 void qemu_spice_display_stop(void)
 137 {
 138     spice_display_is_running = false;
 139 }
 140
 141 int qemu_spice_display_is_running(SimpleSpiceDisplay *ssd)
 142 {
 143     return spice_display_is_running;
 144 }
 145
 146 static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd,
 147                                          QXLRect *rect)
 148 {
 149     SimpleSpiceUpdate *update;
 150     QXLDrawable *drawable;
 151     QXLImage *image;
 152     QXLCommand *cmd;
 153     int bw, bh;
 154     struct timespec time_space;
 155     pixman_image_t *dest;
 156
 157     trace_qemu_spice_create_update(
 158            rect->left, rect->right,
 159            rect->top, rect->bottom);
 160
 161     update   = g_malloc0(sizeof(*update));
 162     drawable = &update->drawable;
 163     image    = &update->image;
 164     cmd      = &update->ext.cmd;
 165
 166     bw       = rect->right - rect->left;
 167     bh       = rect->bottom - rect->top;
 168     update->bitmap = g_malloc(bw * bh * 4);
 169
 170     drawable->bbox            = *rect;
 171     drawable->clip.type       = SPICE_CLIP_TYPE_NONE;
 172     drawable->effect          = QXL_EFFECT_OPAQUE;
 173     drawable->release_info.id = (uintptr_t)update;
 174     drawable->type            = QXL_DRAW_COPY;
 175     drawable->surfaces_dest[0] = -1;
 176     drawable->surfaces_dest[1] = -1;
 177     drawable->surfaces_dest[2] = -1;
 178     clock_gettime(CLOCK_MONOTONIC, &time_space);
 179     /* time in milliseconds from epoch. */
 180     drawable->mm_time = time_space.tv_sec * 1000
 181                       + time_space.tv_nsec / 1000 / 1000;
 182
 183     drawable->u.copy.rop_descriptor  = SPICE_ROPD_OP_PUT;
 184     drawable->u.copy.src_bitmap      = (uintptr_t)image;
 185     drawable->u.copy.src_area.right  = bw;
 186     drawable->u.copy.src_area.bottom = bh;
 187
 188     QXL_SET_IMAGE_ID(image, QXL_IMAGE_GROUP_DEVICE, ssd->unique++);
 189     image->descriptor.type   = SPICE_IMAGE_TYPE_BITMAP;
 190     image->bitmap.flags      = QXL_BITMAP_DIRECT | QXL_BITMAP_TOP_DOWN;
 191     image->bitmap.stride     = bw * 4;
 192     image->descriptor.width  = image->bitmap.x = bw;
 193     image->descriptor.height = image->bitmap.y = bh;
 194     image->bitmap.data = (uintptr_t)(update->bitmap);
 195     image->bitmap.palette = 0;
 196     image->bitmap.format = SPICE_BITMAP_FMT_32BIT;
 197
 198     dest = pixman_image_create_bits(PIXMAN_x8r8g8b8, bw, bh,
 199                                     (void *)update->bitmap, bw * 4);
 200     pixman_image_composite(PIXMAN_OP_SRC, ssd->surface, NULL, ssd->mirror,
 201                            rect->left, rect->top, 0, 0,
 202                            rect->left, rect->top, bw, bh);
 203     pixman_image_composite(PIXMAN_OP_SRC, ssd->mirror, NULL, dest,
 204                            rect->left, rect->top, 0, 0,
 205                            0, 0, bw, bh);
 206     pixman_image_unref(dest);
 207
 208     cmd->type = QXL_CMD_DRAW;
 209     cmd->data = (uintptr_t)drawable;
 210
 211     QTAILQ_INSERT_TAIL(&ssd->updates, update, next);
 212 }
 213
 214 static void qemu_spice_create_update(SimpleSpiceDisplay *ssd)
 215 {
 216     static const int blksize = 32;
 217     int blocks = (surface_width(ssd->ds) + blksize - 1) / blksize;
 218     int dirty_top[blocks];
 219     int y, yoff, x, xoff, blk, bw;
 220     int bpp = surface_bytes_per_pixel(ssd->ds);
 221     uint8_t *guest, *mirror;
 222
 223     if (qemu_spice_rect_is_empty(&ssd->dirty)) {
 224         return;
 225     };
 226
 227     if (ssd->surface == NULL) {
 228         ssd->surface = pixman_image_ref(ssd->ds->image);
 229         ssd->mirror  = qemu_pixman_mirror_create(ssd->ds->format,
 230                                                  ssd->ds->image);
 231     }
 232
 233     for (blk = 0; blk < blocks; blk++) {
 234         dirty_top[blk] = -1;
 235     }
 236
 237     guest = surface_data(ssd->ds);
 238     mirror = (void *)pixman_image_get_data(ssd->mirror);
 239     for (y = ssd->dirty.top; y < ssd->dirty.bottom; y++) {
 240         yoff = y * surface_stride(ssd->ds);
 241         for (x = ssd->dirty.left; x < ssd->dirty.right; x += blksize) {
 242             xoff = x * bpp;
 243             blk = x / blksize;
 244             bw = MIN(blksize, ssd->dirty.right - x);
 245             if (memcmp(guest + yoff + xoff,
 246                        mirror + yoff + xoff,
 247                        bw * bpp) == 0) {
 248                 if (dirty_top[blk] != -1) {
 249                     QXLRect update = {
 250                         .top    = dirty_top[blk],
 251                         .bottom = y,
 252                         .left   = x,
 253                         .right  = x + bw,
 254                     };
 255                     qemu_spice_create_one_update(ssd, &update);
 256                     dirty_top[blk] = -1;
 257                 }
 258             } else {
 259                 if (dirty_top[blk] == -1) {
 260                     dirty_top[blk] = y;
 261                 }
 262             }
 263         }
 264     }
 265
 266     for (x = ssd->dirty.left; x < ssd->dirty.right; x += blksize) {
 267         blk = x / blksize;
 268         bw = MIN(blksize, ssd->dirty.right - x);
 269         if (dirty_top[blk] != -1) {
 270             QXLRect update = {
 271                 .top    = dirty_top[blk],
 272                 .bottom = ssd->dirty.bottom,
 273                 .left   = x,
 274                 .right  = x + bw,
 275             };
 276             qemu_spice_create_one_update(ssd, &update);
 277             dirty_top[blk] = -1;
 278         }
 279     }
 280
 281     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 282 }
 283
 284 /*
 285  * Called from spice server thread context (via interface_release_resource)
 286  * We do *not* hold the global qemu mutex here, so extra care is needed
 287  * when calling qemu functions.  QEMU interfaces used:
 288  *    - g_free (underlying glibc free is re-entrant).
 289  */
 290 void qemu_spice_destroy_update(SimpleSpiceDisplay *sdpy, SimpleSpiceUpdate *update)
 291 {
 292     g_free(update->bitmap);
 293     g_free(update);
 294 }
 295
 296 void qemu_spice_create_host_memslot(SimpleSpiceDisplay *ssd)
 297 {
 298     QXLDevMemSlot memslot;
 299
 300     dprint(1, "%s:\n", __FUNCTION__);
 301
 302     memset(&memslot, 0, sizeof(memslot));
 303     memslot.slot_group_id = MEMSLOT_GROUP_HOST;
 304     memslot.virt_end = ~0;
 305     qemu_spice_add_memslot(ssd, &memslot, QXL_SYNC);
 306 }
 307
 308 void qemu_spice_create_host_primary(SimpleSpiceDisplay *ssd)
 309 {
 310     QXLDevSurfaceCreate surface;
 311
 312     memset(&surface, 0, sizeof(surface));
 313
 314     dprint(1, "%s: %dx%d\n", __FUNCTION__,
 315            surface_width(ssd->ds), surface_height(ssd->ds));
 316
 317     surface.format     = SPICE_SURFACE_FMT_32_xRGB;
 318     surface.width      = surface_width(ssd->ds);
 319     surface.height     = surface_height(ssd->ds);
 320     surface.stride     = -surface.width * 4;
 321     surface.mouse_mode = true;
 322     surface.flags      = 0;
 323     surface.type       = 0;
 324     surface.mem        = (uintptr_t)ssd->buf;
 325     surface.group_id   = MEMSLOT_GROUP_HOST;
 326
 327     qemu_spice_create_primary_surface(ssd, 0, &surface, QXL_SYNC);
 328 }
 329
 330 void qemu_spice_destroy_host_primary(SimpleSpiceDisplay *ssd)
 331 {
 332     dprint(1, "%s:\n", __FUNCTION__);
 333
 334     qemu_spice_destroy_primary_surface(ssd, 0, QXL_SYNC);
 335 }
 336
 337 void qemu_spice_display_init_common(SimpleSpiceDisplay *ssd)
 338 {
 339     qemu_mutex_init(&ssd->lock);
 340     QTAILQ_INIT(&ssd->updates);
 341     ssd->mouse_x = -1;
 342     ssd->mouse_y = -1;
 343     if (ssd->num_surfaces == 0) {
 344         ssd->num_surfaces = 1024;
 345     }
 346     ssd->bufsize = (16 * 1024 * 1024);
 347     ssd->buf = g_malloc(ssd->bufsize);
 348 }
 349
 350 /* display listener callbacks */
 351
 352 void qemu_spice_display_update(SimpleSpiceDisplay *ssd,
 353                                int x, int y, int w, int h)
 354 {
 355     QXLRect update_area;
 356
 357     dprint(2, "%s: x %d y %d w %d h %d\n", __FUNCTION__, x, y, w, h);
 358     update_area.left = x,
 359     update_area.right = x + w;
 360     update_area.top = y;
 361     update_area.bottom = y + h;
 362
 363     if (qemu_spice_rect_is_empty(&ssd->dirty)) {
 364         ssd->notify++;
 365     }
 366     qemu_spice_rect_union(&ssd->dirty, &update_area);
 367 }
 368
 369 void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
 370                                DisplaySurface *surface)
 371 {
 372     SimpleSpiceUpdate *update;
 373
 374     dprint(1, "%s:\n", __FUNCTION__);
 375
 376     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 377     if (ssd->surface) {
 378         pixman_image_unref(ssd->surface);
 379         ssd->surface = NULL;
 380         pixman_image_unref(ssd->mirror);
 381         ssd->mirror = NULL;
 382     }
 383
 384     qemu_mutex_lock(&ssd->lock);
 385     ssd->ds = surface;
 386     while ((update = QTAILQ_FIRST(&ssd->updates)) != NULL) {
 387         QTAILQ_REMOVE(&ssd->updates, update, next);
 388         qemu_spice_destroy_update(ssd, update);
 389     }
 390     qemu_mutex_unlock(&ssd->lock);
 391     qemu_spice_destroy_host_primary(ssd);
 392     qemu_spice_create_host_primary(ssd);
 393
 394     memset(&ssd->dirty, 0, sizeof(ssd->dirty));
 395     ssd->notify++;
 396 }
 397
 398 void qemu_spice_cursor_refresh_unlocked(SimpleSpiceDisplay *ssd)
 399 {
 400     if (ssd->cursor) {
 401         assert(ssd->con);
 402         dpy_cursor_define(ssd->con, ssd->cursor);
 403         cursor_put(ssd->cursor);
 404         ssd->cursor = NULL;
 405     }
 406     if (ssd->mouse_x != -1 && ssd->mouse_y != -1) {
 407         assert(ssd->con);
 408         dpy_mouse_set(ssd->con, ssd->mouse_x, ssd->mouse_y, 1);
 409         ssd->mouse_x = -1;
 410         ssd->mouse_y = -1;
 411     }
 412 }
 413
 414 void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd)
 415 {
 416     dprint(3, "%s:\n", __func__);
 417     vga_hw_update();
 418
 419     qemu_mutex_lock(&ssd->lock);
 420     if (QTAILQ_EMPTY(&ssd->updates) && ssd->ds) {
 421         qemu_spice_create_update(ssd);
 422         ssd->notify++;
 423     }
 424     qemu_spice_cursor_refresh_unlocked(ssd);
 425     qemu_mutex_unlock(&ssd->lock);
 426
 427     if (ssd->notify) {
 428         ssd->notify = 0;
 429         qemu_spice_wakeup(ssd);
 430         dprint(2, "%s: notify\n", __FUNCTION__);
 431     }
 432 }
 433
 434 /* spice display interface callbacks */
 435
 436 static void interface_attach_worker(QXLInstance *sin, QXLWorker *qxl_worker)
 437 {
 438     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 439
 440     dprint(1, "%s:\n", __FUNCTION__);
 441     ssd->worker = qxl_worker;
 442 }
 443
 444 static void interface_set_compression_level(QXLInstance *sin, int level)
 445 {
 446     dprint(1, "%s:\n", __FUNCTION__);
 447     /* nothing to do */
 448 }
 449
 450 static void interface_set_mm_time(QXLInstance *sin, uint32_t mm_time)
 451 {
 452     dprint(3, "%s:\n", __FUNCTION__);
 453     /* nothing to do */
 454 }
 455
 456 static void interface_get_init_info(QXLInstance *sin, QXLDevInitInfo *info)
 457 {
 458     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 459
 460     info->memslot_gen_bits = MEMSLOT_GENERATION_BITS;
 461     info->memslot_id_bits  = MEMSLOT_SLOT_BITS;
 462     info->num_memslots = NUM_MEMSLOTS;
 463     info->num_memslots_groups = NUM_MEMSLOTS_GROUPS;
 464     info->internal_groupslot_id = 0;
 465     info->qxl_ram_size = ssd->bufsize;
 466     info->n_surfaces = ssd->num_surfaces;
 467 }
 468
 469 static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)
 470 {
 471     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 472     SimpleSpiceUpdate *update;
 473     int ret = false;
 474
 475     dprint(3, "%s:\n", __FUNCTION__);
 476
 477     qemu_mutex_lock(&ssd->lock);
 478     update = QTAILQ_FIRST(&ssd->updates);
 479     if (update != NULL) {
 480         QTAILQ_REMOVE(&ssd->updates, update, next);
 481         *ext = update->ext;
 482         ret = true;
 483     }
 484     qemu_mutex_unlock(&ssd->lock);
 485
 486     return ret;
 487 }
 488
 489 static int interface_req_cmd_notification(QXLInstance *sin)
 490 {
 491     dprint(1, "%s:\n", __FUNCTION__);
 492     return 1;
 493 }
 494
 495 static void interface_release_resource(QXLInstance *sin,
 496                                        struct QXLReleaseInfoExt ext)
 497 {
 498     SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
 499     uintptr_t id;
 500
 501     dprint(2, "%s:\n", __FUNCTION__);
 502     id = ext.info->id;
 503     qemu_spice_destroy_update(ssd, (void*)id);
 504 }
 505
 506 static int interface_get_cursor_command(QXLInstance *sin, struct QXLCommandExt *ext)
 507 {
 508     dprint(3, "%s:\n", __FUNCTION__);
 509     return false;
 510 }
 511
 512 static int interface_req_cursor_notification(QXLInstance *sin)
 513 {
 514     dprint(1, "%s:\n", __FUNCTION__);
 515     return 1;
 516 }
 517
 518 static void interface_notify_update(QXLInstance *sin, uint32_t update_id)
 519 {
 520     fprintf(stderr, "%s: abort()\n", __FUNCTION__);
 521     abort();
 522 }
 523
 524 static int interface_flush_resources(QXLInstance *sin)
 525 {
 526     fprintf(stderr, "%s: abort()\n", __FUNCTION__);
 527     abort();
 528     return 0;
 529 }
 530
 531 static void interface_update_area_complete(QXLInstance *sin,
 532         uint32_t surface_id,
 533         QXLRect *dirty, uint32_t num_updated_rects)
 534 {
 535     /* should never be called, used in qxl native mode only */
 536     fprintf(stderr, "%s: abort()\n", __func__);
 537     abort();
 538 }
 539
 540 /* called from spice server thread context only */
 541 static void interface_async_complete(QXLInstance *sin, uint64_t cookie_token)
 542 {
 543     /* should never be called, used in qxl native mode only */
 544     fprintf(stderr, "%s: abort()\n", __func__);
 545     abort();
 546 }
 547
 548 static void interface_set_client_capabilities(QXLInstance *sin,
 549                                               uint8_t client_present,
 550                                               uint8_t caps[58])
 551 {
 552     dprint(3, "%s:\n", __func__);
 553 }
 554
 555 static int interface_client_monitors_config(QXLInstance *sin,
 556                                         VDAgentMonitorsConfig *monitors_config)
 557 {
 558     dprint(3, "%s:\n", __func__);
 559     return 0; /* == not supported by guest */
 560 }
 561
 562 static const QXLInterface dpy_interface = {
 563     .base.type               = SPICE_INTERFACE_QXL,
 564     .base.description        = "qemu simple display",
 565     .base.major_version      = SPICE_INTERFACE_QXL_MAJOR,
 566     .base.minor_version      = SPICE_INTERFACE_QXL_MINOR,
 567
 568     .attache_worker          = interface_attach_worker,
 569     .set_compression_level   = interface_set_compression_level,
 570     .set_mm_time             = interface_set_mm_time,
 571     .get_init_info           = interface_get_init_info,
 572
 573     /* the callbacks below are called from spice server thread context */
 574     .get_command             = interface_get_command,
 575     .req_cmd_notification    = interface_req_cmd_notification,
 576     .release_resource        = interface_release_resource,
 577     .get_cursor_command      = interface_get_cursor_command,
 578     .req_cursor_notification = interface_req_cursor_notification,
 579     .notify_update           = interface_notify_update,
 580     .flush_resources         = interface_flush_resources,
 581     .async_complete          = interface_async_complete,
 582     .update_area_complete    = interface_update_area_complete,
 583     .set_client_capabilities = interface_set_client_capabilities,
 584     .client_monitors_config  = interface_client_monitors_config,
 585 };
 586
 587 static void display_update(DisplayChangeListener *dcl,
 588                            int x, int y, int w, int h)
 589 {
 590     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 591     qemu_spice_display_update(ssd, x, y, w, h);
 592 }
 593
 594 static void display_switch(DisplayChangeListener *dcl,
 595                            struct DisplaySurface *surface)
 596 {
 597     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 598     qemu_spice_display_switch(ssd, surface);
 599 }
 600
 601 static void display_refresh(DisplayChangeListener *dcl)
 602 {
 603     SimpleSpiceDisplay *ssd = container_of(dcl, SimpleSpiceDisplay, dcl);
 604     qemu_spice_display_refresh(ssd);
 605 }
 606
 607 static const DisplayChangeListenerOps display_listener_ops = {
 608     .dpy_name        = "spice",
 609     .dpy_gfx_update  = display_update,
 610     .dpy_gfx_switch  = display_switch,
 611     .dpy_refresh     = display_refresh,
 612 };
 613
 614 void qemu_spice_display_init(DisplayState *ds)
 615 {
 616     SimpleSpiceDisplay *ssd = g_new0(SimpleSpiceDisplay, 1);
 617
 618     qemu_spice_display_init_common(ssd);
 619
 620     ssd->qxl.base.sif = &dpy_interface.base;
 621     qemu_spice_add_interface(&ssd->qxl.base);
 622     assert(ssd->worker);
 623
 624     qemu_spice_create_host_memslot(ssd);
 625
 626     ssd->dcl.ops = &display_listener_ops;
 627     register_displaychangelistener(ds, &ssd->dcl);
 628
 629     qemu_spice_create_host_primary(ssd);
 630 }