drivers/gpu/drm/qxl/qxl_display.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25
  26 #include <linux/crc32.h>
  27 #include <linux/delay.h>
  28 #include <linux/dma-buf-map.h>
  29
  30 #include <drm/drm_drv.h>
  31 #include <drm/drm_atomic.h>
  32 #include <drm/drm_atomic_helper.h>
  33 #include <drm/drm_gem_framebuffer_helper.h>
  34 #include <drm/drm_plane_helper.h>
  35 #include <drm/drm_probe_helper.h>
  36 #include <drm/drm_simple_kms_helper.h>
  37
  38 #include "qxl_drv.h"
  39 #include "qxl_object.h"
  40
  41 static bool qxl_head_enabled(struct qxl_head *head)
  42 {
  43         return head->width && head->height;
  44 }
  45
  46 static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
  47                 unsigned int count)
  48 {
  49         if (qdev->client_monitors_config &&
  50             count > qdev->client_monitors_config->count) {
  51                 kfree(qdev->client_monitors_config);
  52                 qdev->client_monitors_config = NULL;
  53         }
  54         if (!qdev->client_monitors_config) {
  55                 qdev->client_monitors_config = kzalloc(
  56                                 struct_size(qdev->client_monitors_config,
  57                                 heads, count), GFP_KERNEL);
  58                 if (!qdev->client_monitors_config)
  59                         return -ENOMEM;
  60         }
  61         qdev->client_monitors_config->count = count;
  62         return 0;
  63 }
  64
  65 enum {
  66         MONITORS_CONFIG_MODIFIED,
  67         MONITORS_CONFIG_UNCHANGED,
  68         MONITORS_CONFIG_BAD_CRC,
  69         MONITORS_CONFIG_ERROR,
  70 };
  71
  72 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
  73 {
  74         int i;
  75         int num_monitors;
  76         uint32_t crc;
  77         int status = MONITORS_CONFIG_UNCHANGED;
  78
  79         num_monitors = qdev->rom->client_monitors_config.count;
  80         crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
  81                   sizeof(qdev->rom->client_monitors_config));
  82         if (crc != qdev->rom->client_monitors_config_crc)
  83                 return MONITORS_CONFIG_BAD_CRC;
  84         if (!num_monitors) {
  85                 DRM_DEBUG_KMS("no client monitors configured\n");
  86                 return status;
  87         }
  88         if (num_monitors > qxl_num_crtc) {
  89                 DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
  90                               qxl_num_crtc, num_monitors);
  91                 num_monitors = qxl_num_crtc;
  92         } else {
  93                 num_monitors = qdev->rom->client_monitors_config.count;
  94         }
  95         if (qdev->client_monitors_config
  96               && (num_monitors != qdev->client_monitors_config->count)) {
  97                 status = MONITORS_CONFIG_MODIFIED;
  98         }
  99         if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
 100                 status = MONITORS_CONFIG_ERROR;
 101                 return status;
 102         }
 103         /* we copy max from the client but it isn't used */
 104         qdev->client_monitors_config->max_allowed = qxl_num_crtc;
 105         for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
 106                 struct qxl_urect *c_rect =
 107                         &qdev->rom->client_monitors_config.heads[i];
 108                 struct qxl_head *client_head =
 109                         &qdev->client_monitors_config->heads[i];
 110                 if (client_head->x != c_rect->left) {
 111                         client_head->x = c_rect->left;
 112                         status = MONITORS_CONFIG_MODIFIED;
 113                 }
 114                 if (client_head->y != c_rect->top) {
 115                         client_head->y = c_rect->top;
 116                         status = MONITORS_CONFIG_MODIFIED;
 117                 }
 118                 if (client_head->width != c_rect->right - c_rect->left) {
 119                         client_head->width = c_rect->right - c_rect->left;
 120                         status = MONITORS_CONFIG_MODIFIED;
 121                 }
 122                 if (client_head->height != c_rect->bottom - c_rect->top) {
 123                         client_head->height = c_rect->bottom - c_rect->top;
 124                         status = MONITORS_CONFIG_MODIFIED;
 125                 }
 126                 if (client_head->surface_id != 0) {
 127                         client_head->surface_id = 0;
 128                         status = MONITORS_CONFIG_MODIFIED;
 129                 }
 130                 if (client_head->id != i) {
 131                         client_head->id = i;
 132                         status = MONITORS_CONFIG_MODIFIED;
 133                 }
 134                 if (client_head->flags != 0) {
 135                         client_head->flags = 0;
 136                         status = MONITORS_CONFIG_MODIFIED;
 137                 }
 138                 DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
 139                           client_head->x, client_head->y);
 140         }
 141
 142         return status;
 143 }
 144
 145 static void qxl_update_offset_props(struct qxl_device *qdev)
 146 {
 147         struct drm_device *dev = &qdev->ddev;
 148         struct drm_connector *connector;
 149         struct qxl_output *output;
 150         struct qxl_head *head;
 151
 152         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 153                 output = drm_connector_to_qxl_output(connector);
 154
 155                 head = &qdev->client_monitors_config->heads[output->index];
 156
 157                 drm_object_property_set_value(&connector->base,
 158                         dev->mode_config.suggested_x_property, head->x);
 159                 drm_object_property_set_value(&connector->base,
 160                         dev->mode_config.suggested_y_property, head->y);
 161         }
 162 }
 163
 164 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
 165 {
 166         struct drm_device *dev = &qdev->ddev;
 167         struct drm_modeset_acquire_ctx ctx;
 168         int status, retries, ret;
 169
 170         for (retries = 0; retries < 10; retries++) {
 171                 status = qxl_display_copy_rom_client_monitors_config(qdev);
 172                 if (status != MONITORS_CONFIG_BAD_CRC)
 173                         break;
 174                 udelay(5);
 175         }
 176         if (status == MONITORS_CONFIG_ERROR) {
 177                 DRM_DEBUG_KMS("ignoring client monitors config: error");
 178                 return;
 179         }
 180         if (status == MONITORS_CONFIG_BAD_CRC) {
 181                 DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
 182                 return;
 183         }
 184         if (status == MONITORS_CONFIG_UNCHANGED) {
 185                 DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
 186                 return;
 187         }
 188
 189         DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 190         qxl_update_offset_props(qdev);
 191         DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 192         if (!drm_helper_hpd_irq_event(dev)) {
 193                 /* notify that the monitor configuration changed, to
 194                    adjust at the arbitrary resolution */
 195                 drm_kms_helper_hotplug_event(dev);
 196         }
 197 }
 198
 199 static int qxl_check_mode(struct qxl_device *qdev,
 200                           unsigned int width,
 201                           unsigned int height)
 202 {
 203         unsigned int stride;
 204         unsigned int size;
 205
 206         if (check_mul_overflow(width, 4u, &stride))
 207                 return -EINVAL;
 208         if (check_mul_overflow(stride, height, &size))
 209                 return -EINVAL;
 210         if (size > qdev->vram_size)
 211                 return -ENOMEM;
 212         return 0;
 213 }
 214
 215 static int qxl_check_framebuffer(struct qxl_device *qdev,
 216                                  struct qxl_bo *bo)
 217 {
 218         return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
 219 }
 220
 221 static int qxl_add_mode(struct drm_connector *connector,
 222                         unsigned int width,
 223                         unsigned int height,
 224                         bool preferred)
 225 {
 226         struct drm_device *dev = connector->dev;
 227         struct qxl_device *qdev = to_qxl(dev);
 228         struct drm_display_mode *mode = NULL;
 229         int rc;
 230
 231         rc = qxl_check_mode(qdev, width, height);
 232         if (rc != 0)
 233                 return 0;
 234
 235         mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
 236         if (preferred)
 237                 mode->type |= DRM_MODE_TYPE_PREFERRED;
 238         mode->hdisplay = width;
 239         mode->vdisplay = height;
 240         drm_mode_set_name(mode);
 241         drm_mode_probed_add(connector, mode);
 242         return 1;
 243 }
 244
 245 static int qxl_add_monitors_config_modes(struct drm_connector *connector)
 246 {
 247         struct drm_device *dev = connector->dev;
 248         struct qxl_device *qdev = to_qxl(dev);
 249         struct qxl_output *output = drm_connector_to_qxl_output(connector);
 250         int h = output->index;
 251         struct qxl_head *head;
 252
 253         if (!qdev->monitors_config)
 254                 return 0;
 255         if (h >= qxl_num_crtc)
 256                 return 0;
 257         if (!qdev->client_monitors_config)
 258                 return 0;
 259         if (h >= qdev->client_monitors_config->count)
 260                 return 0;
 261
 262         head = &qdev->client_monitors_config->heads[h];
 263         DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
 264
 265         return qxl_add_mode(connector, head->width, head->height, true);
 266 }
 267
 268 static struct mode_size {
 269         int w;
 270         int h;
 271 } extra_modes[] = {
 272         { 720,  480},
 273         {1152,  768},
 274         {1280,  854},
 275 };
 276
 277 static int qxl_add_extra_modes(struct drm_connector *connector)
 278 {
 279         int i, ret = 0;
 280
 281         for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
 282                 ret += qxl_add_mode(connector,
 283                                     extra_modes[i].w,
 284                                     extra_modes[i].h,
 285                                     false);
 286         return ret;
 287 }
 288
 289 static void qxl_send_monitors_config(struct qxl_device *qdev)
 290 {
 291         int i;
 292
 293         BUG_ON(!qdev->ram_header->monitors_config);
 294
 295         if (qdev->monitors_config->count == 0)
 296                 return;
 297
 298         for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
 299                 struct qxl_head *head = &qdev->monitors_config->heads[i];
 300
 301                 if (head->y > 8192 || head->x > 8192 ||
 302                     head->width > 8192 || head->height > 8192) {
 303                         DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
 304                                   i, head->width, head->height,
 305                                   head->x, head->y);
 306                         return;
 307                 }
 308         }
 309         qxl_io_monitors_config(qdev);
 310 }
 311
 312 static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
 313                                             const char *reason)
 314 {
 315         struct drm_device *dev = crtc->dev;
 316         struct qxl_device *qdev = to_qxl(dev);
 317         struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
 318         struct qxl_head head;
 319         int oldcount, i = qcrtc->index;
 320
 321         if (!qdev->primary_bo) {
 322                 DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
 323                 return;
 324         }
 325
 326         if (!qdev->monitors_config || qxl_num_crtc <= i)
 327                 return;
 328
 329         head.id = i;
 330         head.flags = 0;
 331         head.surface_id = 0;
 332         oldcount = qdev->monitors_config->count;
 333         if (crtc->state->active) {
 334                 struct drm_display_mode *mode = &crtc->mode;
 335
 336                 head.width = mode->hdisplay;
 337                 head.height = mode->vdisplay;
 338                 head.x = crtc->x;
 339                 head.y = crtc->y;
 340                 if (qdev->monitors_config->count < i + 1)
 341                         qdev->monitors_config->count = i + 1;
 342                 if (qdev->primary_bo == qdev->dumb_shadow_bo)
 343                         head.x += qdev->dumb_heads[i].x;
 344         } else if (i > 0) {
 345                 head.width = 0;
 346                 head.height = 0;
 347                 head.x = 0;
 348                 head.y = 0;
 349                 if (qdev->monitors_config->count == i + 1)
 350                         qdev->monitors_config->count = i;
 351         } else {
 352                 DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
 353                 return;
 354         }
 355
 356         if (head.width  == qdev->monitors_config->heads[i].width  &&
 357             head.height == qdev->monitors_config->heads[i].height &&
 358             head.x      == qdev->monitors_config->heads[i].x      &&
 359             head.y      == qdev->monitors_config->heads[i].y      &&
 360             oldcount    == qdev->monitors_config->count)
 361                 return;
 362
 363         DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
 364                       i, head.width, head.height, head.x, head.y,
 365                       crtc->state->active ? "on" : "off", reason);
 366         if (oldcount != qdev->monitors_config->count)
 367                 DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
 368                               oldcount, qdev->monitors_config->count,
 369                               qxl_num_crtc);
 370
 371         qdev->monitors_config->heads[i] = head;
 372         qdev->monitors_config->max_allowed = qxl_num_crtc;
 373         qxl_send_monitors_config(qdev);
 374 }
 375
 376 static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
 377                                   struct drm_atomic_state *state)
 378 {
 379         qxl_crtc_update_monitors_config(crtc, "flush");
 380 }
 381
 382 static void qxl_crtc_destroy(struct drm_crtc *crtc)
 383 {
 384         struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
 385
 386         qxl_bo_unref(&qxl_crtc->cursor_bo);
 387         drm_crtc_cleanup(crtc);
 388         kfree(qxl_crtc);
 389 }
 390
 391 static const struct drm_crtc_funcs qxl_crtc_funcs = {
 392         .set_config = drm_atomic_helper_set_config,
 393         .destroy = qxl_crtc_destroy,
 394         .page_flip = drm_atomic_helper_page_flip,
 395         .reset = drm_atomic_helper_crtc_reset,
 396         .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 397         .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 398 };
 399
 400 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
 401                                          struct drm_file *file_priv,
 402                                          unsigned int flags, unsigned int color,
 403                                          struct drm_clip_rect *clips,
 404                                          unsigned int num_clips)
 405 {
 406         /* TODO: vmwgfx where this was cribbed from had locking. Why? */
 407         struct qxl_device *qdev = to_qxl(fb->dev);
 408         struct drm_clip_rect norect;
 409         struct qxl_bo *qobj;
 410         struct drm_modeset_acquire_ctx ctx;
 411         bool is_primary;
 412         int inc = 1, ret;
 413
 414         DRM_MODESET_LOCK_ALL_BEGIN(fb->dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 415
 416         qobj = gem_to_qxl_bo(fb->obj[0]);
 417         /* if we aren't primary surface ignore this */
 418         is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
 419         if (!is_primary)
 420                 goto out_lock_end;
 421
 422         if (!num_clips) {
 423                 num_clips = 1;
 424                 clips = &norect;
 425                 norect.x1 = norect.y1 = 0;
 426                 norect.x2 = fb->width;
 427                 norect.y2 = fb->height;
 428         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 429                 num_clips /= 2;
 430                 inc = 2; /* skip source rects */
 431         }
 432
 433         qxl_draw_dirty_fb(qdev, fb, qobj, flags, color,
 434                           clips, num_clips, inc, 0);
 435
 436 out_lock_end:
 437         DRM_MODESET_LOCK_ALL_END(fb->dev, ctx, ret);
 438
 439         return 0;
 440 }
 441
 442 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
 443         .destroy = drm_gem_fb_destroy,
 444         .dirty = qxl_framebuffer_surface_dirty,
 445         .create_handle = drm_gem_fb_create_handle,
 446 };
 447
 448 static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
 449                                    struct drm_atomic_state *state)
 450 {
 451         qxl_crtc_update_monitors_config(crtc, "enable");
 452 }
 453
 454 static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
 455                                     struct drm_atomic_state *state)
 456 {
 457         qxl_crtc_update_monitors_config(crtc, "disable");
 458 }
 459
 460 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
 461         .atomic_flush = qxl_crtc_atomic_flush,
 462         .atomic_enable = qxl_crtc_atomic_enable,
 463         .atomic_disable = qxl_crtc_atomic_disable,
 464 };
 465
 466 static int qxl_primary_atomic_check(struct drm_plane *plane,
 467                                     struct drm_atomic_state *state)
 468 {
 469         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 470                                                                                  plane);
 471         struct qxl_device *qdev = to_qxl(plane->dev);
 472         struct qxl_bo *bo;
 473
 474         if (!new_plane_state->crtc || !new_plane_state->fb)
 475                 return 0;
 476
 477         bo = gem_to_qxl_bo(new_plane_state->fb->obj[0]);
 478
 479         return qxl_check_framebuffer(qdev, bo);
 480 }
 481
 482 static int qxl_primary_apply_cursor(struct qxl_device *qdev,
 483                                     struct drm_plane_state *plane_state)
 484 {
 485         struct drm_framebuffer *fb = plane_state->fb;
 486         struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 487         struct qxl_cursor_cmd *cmd;
 488         struct qxl_release *release;
 489         int ret = 0;
 490
 491         if (!qcrtc->cursor_bo)
 492                 return 0;
 493
 494         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 495                                          QXL_RELEASE_CURSOR_CMD,
 496                                          &release, NULL);
 497         if (ret)
 498                 return ret;
 499
 500         ret = qxl_release_list_add(release, qcrtc->cursor_bo);
 501         if (ret)
 502                 goto out_free_release;
 503
 504         ret = qxl_release_reserve_list(release, false);
 505         if (ret)
 506                 goto out_free_release;
 507
 508         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 509         cmd->type = QXL_CURSOR_SET;
 510         cmd->u.set.position.x = plane_state->crtc_x + fb->hot_x;
 511         cmd->u.set.position.y = plane_state->crtc_y + fb->hot_y;
 512
 513         cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
 514
 515         cmd->u.set.visible = 1;
 516         qxl_release_unmap(qdev, release, &cmd->release_info);
 517
 518         qxl_release_fence_buffer_objects(release);
 519         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 520
 521         return ret;
 522
 523 out_free_release:
 524         qxl_release_free(qdev, release);
 525         return ret;
 526 }
 527
 528 static int qxl_primary_move_cursor(struct qxl_device *qdev,
 529                                    struct drm_plane_state *plane_state)
 530 {
 531         struct drm_framebuffer *fb = plane_state->fb;
 532         struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 533         struct qxl_cursor_cmd *cmd;
 534         struct qxl_release *release;
 535         int ret = 0;
 536
 537         if (!qcrtc->cursor_bo)
 538                 return 0;
 539
 540         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 541                                          QXL_RELEASE_CURSOR_CMD,
 542                                          &release, NULL);
 543         if (ret)
 544                 return ret;
 545
 546         ret = qxl_release_reserve_list(release, true);
 547         if (ret) {
 548                 qxl_release_free(qdev, release);
 549                 return ret;
 550         }
 551
 552         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 553         cmd->type = QXL_CURSOR_MOVE;
 554         cmd->u.position.x = plane_state->crtc_x + fb->hot_x;
 555         cmd->u.position.y = plane_state->crtc_y + fb->hot_y;
 556         qxl_release_unmap(qdev, release, &cmd->release_info);
 557
 558         qxl_release_fence_buffer_objects(release);
 559         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 560         return ret;
 561 }
 562
 563 static struct qxl_bo *qxl_create_cursor(struct qxl_device *qdev,
 564                                         struct qxl_bo *user_bo,
 565                                         int hot_x, int hot_y)
 566 {
 567         static const u32 size = 64 * 64 * 4;
 568         struct qxl_bo *cursor_bo;
 569         struct dma_buf_map cursor_map;
 570         struct dma_buf_map user_map;
 571         struct qxl_cursor cursor;
 572         int ret;
 573
 574         if (!user_bo)
 575                 return NULL;
 576
 577         ret = qxl_bo_create(qdev, sizeof(struct qxl_cursor) + size,
 578                             false, true, QXL_GEM_DOMAIN_VRAM, 1,
 579                             NULL, &cursor_bo);
 580         if (ret)
 581                 goto err;
 582
 583         ret = qxl_bo_vmap(cursor_bo, &cursor_map);
 584         if (ret)
 585                 goto err_unref;
 586
 587         ret = qxl_bo_vmap(user_bo, &user_map);
 588         if (ret)
 589                 goto err_unmap;
 590
 591         cursor.header.unique = 0;
 592         cursor.header.type = SPICE_CURSOR_TYPE_ALPHA;
 593         cursor.header.width = 64;
 594         cursor.header.height = 64;
 595         cursor.header.hot_spot_x = hot_x;
 596         cursor.header.hot_spot_y = hot_y;
 597         cursor.data_size = size;
 598         cursor.chunk.next_chunk = 0;
 599         cursor.chunk.prev_chunk = 0;
 600         cursor.chunk.data_size = size;
 601         if (cursor_map.is_iomem) {
 602                 memcpy_toio(cursor_map.vaddr_iomem,
 603                             &cursor, sizeof(cursor));
 604                 memcpy_toio(cursor_map.vaddr_iomem + sizeof(cursor),
 605                             user_map.vaddr, size);
 606         } else {
 607                 memcpy(cursor_map.vaddr,
 608                        &cursor, sizeof(cursor));
 609                 memcpy(cursor_map.vaddr + sizeof(cursor),
 610                        user_map.vaddr, size);
 611         }
 612
 613         qxl_bo_vunmap(user_bo);
 614         qxl_bo_vunmap(cursor_bo);
 615         return cursor_bo;
 616
 617 err_unmap:
 618         qxl_bo_vunmap(cursor_bo);
 619 err_unref:
 620         qxl_bo_unpin(cursor_bo);
 621         qxl_bo_unref(&cursor_bo);
 622 err:
 623         return NULL;
 624 }
 625
 626 static void qxl_free_cursor(struct qxl_bo *cursor_bo)
 627 {
 628         if (!cursor_bo)
 629                 return;
 630
 631         qxl_bo_unpin(cursor_bo);
 632         qxl_bo_unref(&cursor_bo);
 633 }
 634
 635 static void qxl_primary_atomic_update(struct drm_plane *plane,
 636                                       struct drm_atomic_state *state)
 637 {
 638         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 639                                                                            plane);
 640         struct qxl_device *qdev = to_qxl(plane->dev);
 641         struct qxl_bo *bo = gem_to_qxl_bo(new_state->fb->obj[0]);
 642         struct qxl_bo *primary;
 643         struct drm_clip_rect norect = {
 644             .x1 = 0,
 645             .y1 = 0,
 646             .x2 = new_state->fb->width,
 647             .y2 = new_state->fb->height
 648         };
 649         uint32_t dumb_shadow_offset = 0;
 650
 651         primary = bo->shadow ? bo->shadow : bo;
 652
 653         if (!primary->is_primary) {
 654                 if (qdev->primary_bo)
 655                         qxl_io_destroy_primary(qdev);
 656                 qxl_io_create_primary(qdev, primary);
 657                 qxl_primary_apply_cursor(qdev, plane->state);
 658         }
 659
 660         if (bo->is_dumb)
 661                 dumb_shadow_offset =
 662                         qdev->dumb_heads[new_state->crtc->index].x;
 663
 664         qxl_draw_dirty_fb(qdev, new_state->fb, bo, 0, 0, &norect, 1, 1,
 665                           dumb_shadow_offset);
 666 }
 667
 668 static void qxl_primary_atomic_disable(struct drm_plane *plane,
 669                                        struct drm_atomic_state *state)
 670 {
 671         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 672                                                                            plane);
 673         struct qxl_device *qdev = to_qxl(plane->dev);
 674
 675         if (old_state->fb) {
 676                 struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
 677
 678                 if (bo->shadow)
 679                         bo = bo->shadow;
 680                 if (bo->is_primary) {
 681                         qxl_io_destroy_primary(qdev);
 682                         bo->is_primary = false;
 683                 }
 684         }
 685 }
 686
 687 static void qxl_cursor_atomic_update(struct drm_plane *plane,
 688                                      struct drm_atomic_state *state)
 689 {
 690         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 691                                                                            plane);
 692         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 693                                                                            plane);
 694         struct qxl_device *qdev = to_qxl(plane->dev);
 695         struct drm_framebuffer *fb = new_state->fb;
 696
 697         if (fb != old_state->fb) {
 698                 qxl_primary_apply_cursor(qdev, new_state);
 699         } else {
 700                 qxl_primary_move_cursor(qdev, new_state);
 701         }
 702 }
 703
 704 static void qxl_cursor_atomic_disable(struct drm_plane *plane,
 705                                       struct drm_atomic_state *state)
 706 {
 707         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 708                                                                            plane);
 709         struct qxl_device *qdev = to_qxl(plane->dev);
 710         struct qxl_crtc *qcrtc;
 711         struct qxl_release *release;
 712         struct qxl_cursor_cmd *cmd;
 713         int ret;
 714
 715         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 716                                          QXL_RELEASE_CURSOR_CMD,
 717                                          &release, NULL);
 718         if (ret)
 719                 return;
 720
 721         ret = qxl_release_reserve_list(release, true);
 722         if (ret) {
 723                 qxl_release_free(qdev, release);
 724                 return;
 725         }
 726
 727         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 728         cmd->type = QXL_CURSOR_HIDE;
 729         qxl_release_unmap(qdev, release, &cmd->release_info);
 730
 731         qxl_release_fence_buffer_objects(release);
 732         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 733
 734         qcrtc = to_qxl_crtc(old_state->crtc);
 735         qxl_free_cursor(qcrtc->cursor_bo);
 736         qcrtc->cursor_bo = NULL;
 737 }
 738
 739 static void qxl_update_dumb_head(struct qxl_device *qdev,
 740                                  int index, struct qxl_bo *bo)
 741 {
 742         uint32_t width, height;
 743
 744         if (index >= qdev->monitors_config->max_allowed)
 745                 return;
 746
 747         if (bo && bo->is_dumb) {
 748                 width = bo->surf.width;
 749                 height = bo->surf.height;
 750         } else {
 751                 width = 0;
 752                 height = 0;
 753         }
 754
 755         if (qdev->dumb_heads[index].width == width &&
 756             qdev->dumb_heads[index].height == height)
 757                 return;
 758
 759         DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
 760                   qdev->dumb_heads[index].width,
 761                   qdev->dumb_heads[index].height,
 762                   width, height);
 763         qdev->dumb_heads[index].width = width;
 764         qdev->dumb_heads[index].height = height;
 765 }
 766
 767 static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
 768                                  struct qxl_surface *surf)
 769 {
 770         struct qxl_head *head;
 771         int i;
 772
 773         memset(surf, 0, sizeof(*surf));
 774         for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
 775                 head = qdev->dumb_heads + i;
 776                 head->x = surf->width;
 777                 surf->width += head->width;
 778                 if (surf->height < head->height)
 779                         surf->height = head->height;
 780         }
 781         if (surf->width < 64)
 782                 surf->width = 64;
 783         if (surf->height < 64)
 784                 surf->height = 64;
 785         surf->format = SPICE_SURFACE_FMT_32_xRGB;
 786         surf->stride = surf->width * 4;
 787
 788         if (!qdev->dumb_shadow_bo ||
 789             qdev->dumb_shadow_bo->surf.width != surf->width ||
 790             qdev->dumb_shadow_bo->surf.height != surf->height)
 791                 DRM_DEBUG("%dx%d\n", surf->width, surf->height);
 792 }
 793
 794 static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
 795                                int crtc_index)
 796 {
 797         struct qxl_surface surf;
 798
 799         qxl_update_dumb_head(qdev, crtc_index,
 800                              user_bo);
 801         qxl_calc_dumb_shadow(qdev, &surf);
 802         if (!qdev->dumb_shadow_bo ||
 803             qdev->dumb_shadow_bo->surf.width  != surf.width ||
 804             qdev->dumb_shadow_bo->surf.height != surf.height) {
 805                 if (qdev->dumb_shadow_bo) {
 806                         drm_gem_object_put
 807                                 (&qdev->dumb_shadow_bo->tbo.base);
 808                         qdev->dumb_shadow_bo = NULL;
 809                 }
 810                 qxl_bo_create(qdev, surf.height * surf.stride,
 811                               true, true, QXL_GEM_DOMAIN_SURFACE, 0,
 812                               &surf, &qdev->dumb_shadow_bo);
 813         }
 814         if (user_bo->shadow != qdev->dumb_shadow_bo) {
 815                 if (user_bo->shadow) {
 816                         qxl_bo_unpin(user_bo->shadow);
 817                         drm_gem_object_put
 818                                 (&user_bo->shadow->tbo.base);
 819                         user_bo->shadow = NULL;
 820                 }
 821                 drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
 822                 user_bo->shadow = qdev->dumb_shadow_bo;
 823                 qxl_bo_pin(user_bo->shadow);
 824         }
 825 }
 826
 827 static int qxl_plane_prepare_fb(struct drm_plane *plane,
 828                                 struct drm_plane_state *new_state)
 829 {
 830         struct qxl_device *qdev = to_qxl(plane->dev);
 831         struct drm_gem_object *obj;
 832         struct qxl_bo *user_bo;
 833
 834         if (!new_state->fb)
 835                 return 0;
 836
 837         obj = new_state->fb->obj[0];
 838         user_bo = gem_to_qxl_bo(obj);
 839
 840         if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
 841             user_bo->is_dumb) {
 842                 qxl_prepare_shadow(qdev, user_bo, new_state->crtc->index);
 843         }
 844
 845         if (plane->type == DRM_PLANE_TYPE_CURSOR &&
 846             plane->state->fb != new_state->fb) {
 847                 struct qxl_crtc *qcrtc = to_qxl_crtc(new_state->crtc);
 848                 struct qxl_bo *old_cursor_bo = qcrtc->cursor_bo;
 849
 850                 qcrtc->cursor_bo = qxl_create_cursor(qdev, user_bo,
 851                                                      new_state->fb->hot_x,
 852                                                      new_state->fb->hot_y);
 853                 qxl_free_cursor(old_cursor_bo);
 854         }
 855
 856         return qxl_bo_pin(user_bo);
 857 }
 858
 859 static void qxl_plane_cleanup_fb(struct drm_plane *plane,
 860                                  struct drm_plane_state *old_state)
 861 {
 862         struct drm_gem_object *obj;
 863         struct qxl_bo *user_bo;
 864
 865         if (!old_state->fb) {
 866                 /*
 867                  * we never executed prepare_fb, so there's nothing to
 868                  * unpin.
 869                  */
 870                 return;
 871         }
 872
 873         obj = old_state->fb->obj[0];
 874         user_bo = gem_to_qxl_bo(obj);
 875         qxl_bo_unpin(user_bo);
 876
 877         if (old_state->fb != plane->state->fb && user_bo->shadow) {
 878                 qxl_bo_unpin(user_bo->shadow);
 879                 drm_gem_object_put(&user_bo->shadow->tbo.base);
 880                 user_bo->shadow = NULL;
 881         }
 882 }
 883
 884 static const uint32_t qxl_cursor_plane_formats[] = {
 885         DRM_FORMAT_ARGB8888,
 886 };
 887
 888 static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
 889         .atomic_update = qxl_cursor_atomic_update,
 890         .atomic_disable = qxl_cursor_atomic_disable,
 891         .prepare_fb = qxl_plane_prepare_fb,
 892         .cleanup_fb = qxl_plane_cleanup_fb,
 893 };
 894
 895 static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
 896         .update_plane   = drm_atomic_helper_update_plane,
 897         .disable_plane  = drm_atomic_helper_disable_plane,
 898         .destroy        = drm_primary_helper_destroy,
 899         .reset          = drm_atomic_helper_plane_reset,
 900         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 901         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 902 };
 903
 904 static const uint32_t qxl_primary_plane_formats[] = {
 905         DRM_FORMAT_XRGB8888,
 906         DRM_FORMAT_ARGB8888,
 907 };
 908
 909 static const struct drm_plane_helper_funcs primary_helper_funcs = {
 910         .atomic_check = qxl_primary_atomic_check,
 911         .atomic_update = qxl_primary_atomic_update,
 912         .atomic_disable = qxl_primary_atomic_disable,
 913         .prepare_fb = qxl_plane_prepare_fb,
 914         .cleanup_fb = qxl_plane_cleanup_fb,
 915 };
 916
 917 static const struct drm_plane_funcs qxl_primary_plane_funcs = {
 918         .update_plane   = drm_atomic_helper_update_plane,
 919         .disable_plane  = drm_atomic_helper_disable_plane,
 920         .destroy        = drm_primary_helper_destroy,
 921         .reset          = drm_atomic_helper_plane_reset,
 922         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 923         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 924 };
 925
 926 static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
 927                                           unsigned int possible_crtcs,
 928                                           enum drm_plane_type type)
 929 {
 930         const struct drm_plane_helper_funcs *helper_funcs = NULL;
 931         struct drm_plane *plane;
 932         const struct drm_plane_funcs *funcs;
 933         const uint32_t *formats;
 934         int num_formats;
 935         int err;
 936
 937         if (type == DRM_PLANE_TYPE_PRIMARY) {
 938                 funcs = &qxl_primary_plane_funcs;
 939                 formats = qxl_primary_plane_formats;
 940                 num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
 941                 helper_funcs = &primary_helper_funcs;
 942         } else if (type == DRM_PLANE_TYPE_CURSOR) {
 943                 funcs = &qxl_cursor_plane_funcs;
 944                 formats = qxl_cursor_plane_formats;
 945                 helper_funcs = &qxl_cursor_helper_funcs;
 946                 num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
 947         } else {
 948                 return ERR_PTR(-EINVAL);
 949         }
 950
 951         plane = kzalloc(sizeof(*plane), GFP_KERNEL);
 952         if (!plane)
 953                 return ERR_PTR(-ENOMEM);
 954
 955         err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
 956                                        funcs, formats, num_formats,
 957                                        NULL, type, NULL);
 958         if (err)
 959                 goto free_plane;
 960
 961         drm_plane_helper_add(plane, helper_funcs);
 962
 963         return plane;
 964
 965 free_plane:
 966         kfree(plane);
 967         return ERR_PTR(-EINVAL);
 968 }
 969
 970 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
 971 {
 972         struct qxl_crtc *qxl_crtc;
 973         struct drm_plane *primary, *cursor;
 974         struct qxl_device *qdev = to_qxl(dev);
 975         int r;
 976
 977         qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
 978         if (!qxl_crtc)
 979                 return -ENOMEM;
 980
 981         primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
 982         if (IS_ERR(primary)) {
 983                 r = -ENOMEM;
 984                 goto free_mem;
 985         }
 986
 987         cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
 988         if (IS_ERR(cursor)) {
 989                 r = -ENOMEM;
 990                 goto clean_primary;
 991         }
 992
 993         r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
 994                                       &qxl_crtc_funcs, NULL);
 995         if (r)
 996                 goto clean_cursor;
 997
 998         qxl_crtc->index = crtc_id;
 999         drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
1000         return 0;
1001
1002 clean_cursor:
1003         drm_plane_cleanup(cursor);
1004         kfree(cursor);
1005 clean_primary:
1006         drm_plane_cleanup(primary);
1007         kfree(primary);
1008 free_mem:
1009         kfree(qxl_crtc);
1010         return r;
1011 }
1012
1013 static int qxl_conn_get_modes(struct drm_connector *connector)
1014 {
1015         struct drm_device *dev = connector->dev;
1016         struct qxl_device *qdev = to_qxl(dev);
1017         struct qxl_output *output = drm_connector_to_qxl_output(connector);
1018         unsigned int pwidth = 1024;
1019         unsigned int pheight = 768;
1020         int ret = 0;
1021
1022         if (qdev->client_monitors_config) {
1023                 struct qxl_head *head;
1024                 head = &qdev->client_monitors_config->heads[output->index];
1025                 if (head->width)
1026                         pwidth = head->width;
1027                 if (head->height)
1028                         pheight = head->height;
1029         }
1030
1031         ret += drm_add_modes_noedid(connector, 8192, 8192);
1032         ret += qxl_add_extra_modes(connector);
1033         ret += qxl_add_monitors_config_modes(connector);
1034         drm_set_preferred_mode(connector, pwidth, pheight);
1035         return ret;
1036 }
1037
1038 static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
1039                                struct drm_display_mode *mode)
1040 {
1041         struct drm_device *ddev = connector->dev;
1042         struct qxl_device *qdev = to_qxl(ddev);
1043
1044         if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
1045                 return MODE_BAD;
1046
1047         return MODE_OK;
1048 }
1049
1050 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1051 {
1052         struct qxl_output *qxl_output =
1053                 drm_connector_to_qxl_output(connector);
1054
1055         DRM_DEBUG("\n");
1056         return &qxl_output->enc;
1057 }
1058
1059 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1060         .get_modes = qxl_conn_get_modes,
1061         .mode_valid = qxl_conn_mode_valid,
1062         .best_encoder = qxl_best_encoder,
1063 };
1064
1065 static enum drm_connector_status qxl_conn_detect(
1066                         struct drm_connector *connector,
1067                         bool force)
1068 {
1069         struct qxl_output *output =
1070                 drm_connector_to_qxl_output(connector);
1071         struct drm_device *ddev = connector->dev;
1072         struct qxl_device *qdev = to_qxl(ddev);
1073         bool connected = false;
1074
1075         /* The first monitor is always connected */
1076         if (!qdev->client_monitors_config) {
1077                 if (output->index == 0)
1078                         connected = true;
1079         } else
1080                 connected = qdev->client_monitors_config->count > output->index &&
1081                      qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1082
1083         DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1084
1085         return connected ? connector_status_connected
1086                          : connector_status_disconnected;
1087 }
1088
1089 static void qxl_conn_destroy(struct drm_connector *connector)
1090 {
1091         struct qxl_output *qxl_output =
1092                 drm_connector_to_qxl_output(connector);
1093
1094         drm_connector_unregister(connector);
1095         drm_connector_cleanup(connector);
1096         kfree(qxl_output);
1097 }
1098
1099 static const struct drm_connector_funcs qxl_connector_funcs = {
1100         .detect = qxl_conn_detect,
1101         .fill_modes = drm_helper_probe_single_connector_modes,
1102         .destroy = qxl_conn_destroy,
1103         .reset = drm_atomic_helper_connector_reset,
1104         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1105         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1106 };
1107
1108 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1109 {
1110         if (qdev->hotplug_mode_update_property)
1111                 return 0;
1112
1113         qdev->hotplug_mode_update_property =
1114                 drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1115                                           "hotplug_mode_update", 0, 1);
1116
1117         return 0;
1118 }
1119
1120 static int qdev_output_init(struct drm_device *dev, int num_output)
1121 {
1122         struct qxl_device *qdev = to_qxl(dev);
1123         struct qxl_output *qxl_output;
1124         struct drm_connector *connector;
1125         struct drm_encoder *encoder;
1126         int ret;
1127
1128         qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1129         if (!qxl_output)
1130                 return -ENOMEM;
1131
1132         qxl_output->index = num_output;
1133
1134         connector = &qxl_output->base;
1135         encoder = &qxl_output->enc;
1136         drm_connector_init(dev, &qxl_output->base,
1137                            &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1138
1139         ret = drm_simple_encoder_init(dev, &qxl_output->enc,
1140                                       DRM_MODE_ENCODER_VIRTUAL);
1141         if (ret) {
1142                 drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
1143                         ret);
1144                 goto err_drm_connector_cleanup;
1145         }
1146
1147         /* we get HPD via client monitors config */
1148         connector->polled = DRM_CONNECTOR_POLL_HPD;
1149         encoder->possible_crtcs = 1 << num_output;
1150         drm_connector_attach_encoder(&qxl_output->base,
1151                                           &qxl_output->enc);
1152         drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1153
1154         drm_object_attach_property(&connector->base,
1155                                    qdev->hotplug_mode_update_property, 0);
1156         drm_object_attach_property(&connector->base,
1157                                    dev->mode_config.suggested_x_property, 0);
1158         drm_object_attach_property(&connector->base,
1159                                    dev->mode_config.suggested_y_property, 0);
1160         return 0;
1161
1162 err_drm_connector_cleanup:
1163         drm_connector_cleanup(&qxl_output->base);
1164         kfree(qxl_output);
1165         return ret;
1166 }
1167
1168 static struct drm_framebuffer *
1169 qxl_user_framebuffer_create(struct drm_device *dev,
1170                             struct drm_file *file_priv,
1171                             const struct drm_mode_fb_cmd2 *mode_cmd)
1172 {
1173         return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
1174                                             &qxl_fb_funcs);
1175 }
1176
1177 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1178         .fb_create = qxl_user_framebuffer_create,
1179         .atomic_check = drm_atomic_helper_check,
1180         .atomic_commit = drm_atomic_helper_commit,
1181 };
1182
1183 int qxl_create_monitors_object(struct qxl_device *qdev)
1184 {
1185         int ret;
1186         struct drm_gem_object *gobj;
1187         struct dma_buf_map map;
1188         int monitors_config_size = sizeof(struct qxl_monitors_config) +
1189                 qxl_num_crtc * sizeof(struct qxl_head);
1190
1191         ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1192                                     QXL_GEM_DOMAIN_VRAM,
1193                                     false, false, NULL, &gobj);
1194         if (ret) {
1195                 DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1196                 return -ENOMEM;
1197         }
1198         qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1199
1200         ret = qxl_bo_vmap(qdev->monitors_config_bo, &map);
1201         if (ret)
1202                 return ret;
1203
1204         qdev->monitors_config = qdev->monitors_config_bo->kptr;
1205         qdev->ram_header->monitors_config =
1206                 qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1207
1208         memset(qdev->monitors_config, 0, monitors_config_size);
1209         qdev->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
1210                                    GFP_KERNEL);
1211         if (!qdev->dumb_heads) {
1212                 qxl_destroy_monitors_object(qdev);
1213                 return -ENOMEM;
1214         }
1215         return 0;
1216 }
1217
1218 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1219 {
1220         int ret;
1221
1222         if (!qdev->monitors_config_bo)
1223                 return 0;
1224
1225         qdev->monitors_config = NULL;
1226         qdev->ram_header->monitors_config = 0;
1227
1228         ret = qxl_bo_vunmap(qdev->monitors_config_bo);
1229         if (ret)
1230                 return ret;
1231
1232         qxl_bo_unref(&qdev->monitors_config_bo);
1233         return 0;
1234 }
1235
1236 int qxl_modeset_init(struct qxl_device *qdev)
1237 {
1238         int i;
1239         int ret;
1240
1241         ret = drmm_mode_config_init(&qdev->ddev);
1242         if (ret)
1243                 return ret;
1244
1245         ret = qxl_create_monitors_object(qdev);
1246         if (ret)
1247                 return ret;
1248
1249         qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1250
1251         /* modes will be validated against the framebuffer size */
1252         qdev->ddev.mode_config.min_width = 0;
1253         qdev->ddev.mode_config.min_height = 0;
1254         qdev->ddev.mode_config.max_width = 8192;
1255         qdev->ddev.mode_config.max_height = 8192;
1256
1257         qdev->ddev.mode_config.fb_base = qdev->vram_base;
1258
1259         drm_mode_create_suggested_offset_properties(&qdev->ddev);
1260         qxl_mode_create_hotplug_mode_update_property(qdev);
1261
1262         for (i = 0 ; i < qxl_num_crtc; ++i) {
1263                 qdev_crtc_init(&qdev->ddev, i);
1264                 qdev_output_init(&qdev->ddev, i);
1265         }
1266
1267         qxl_display_read_client_monitors_config(qdev);
1268
1269         drm_mode_config_reset(&qdev->ddev);
1270         return 0;
1271 }
1272
1273 void qxl_modeset_fini(struct qxl_device *qdev)
1274 {
1275         if (qdev->dumb_shadow_bo) {
1276                 qxl_bo_unpin(qdev->dumb_shadow_bo);
1277                 drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
1278                 qdev->dumb_shadow_bo = NULL;
1279         }
1280         qxl_destroy_monitors_object(qdev);
1281 }