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/iosys-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_edid.h>
  34 #include <drm/drm_framebuffer.h>
  35 #include <drm/drm_gem_framebuffer_helper.h>
  36 #include <drm/drm_plane_helper.h>
  37 #include <drm/drm_probe_helper.h>
  38 #include <drm/drm_simple_kms_helper.h>
  39 #include <drm/drm_gem_atomic_helper.h>
  40
  41 #include "qxl_drv.h"
  42 #include "qxl_object.h"
  43
  44 static bool qxl_head_enabled(struct qxl_head *head)
  45 {
  46         return head->width && head->height;
  47 }
  48
  49 static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
  50                 unsigned int count)
  51 {
  52         if (qdev->client_monitors_config &&
  53             count > qdev->client_monitors_config->count) {
  54                 kfree(qdev->client_monitors_config);
  55                 qdev->client_monitors_config = NULL;
  56         }
  57         if (!qdev->client_monitors_config) {
  58                 qdev->client_monitors_config = kzalloc(
  59                                 struct_size(qdev->client_monitors_config,
  60                                 heads, count), GFP_KERNEL);
  61                 if (!qdev->client_monitors_config)
  62                         return -ENOMEM;
  63         }
  64         qdev->client_monitors_config->count = count;
  65         return 0;
  66 }
  67
  68 enum {
  69         MONITORS_CONFIG_MODIFIED,
  70         MONITORS_CONFIG_UNCHANGED,
  71         MONITORS_CONFIG_BAD_CRC,
  72         MONITORS_CONFIG_ERROR,
  73 };
  74
  75 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
  76 {
  77         int i;
  78         int num_monitors;
  79         uint32_t crc;
  80         int status = MONITORS_CONFIG_UNCHANGED;
  81
  82         num_monitors = qdev->rom->client_monitors_config.count;
  83         crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
  84                   sizeof(qdev->rom->client_monitors_config));
  85         if (crc != qdev->rom->client_monitors_config_crc)
  86                 return MONITORS_CONFIG_BAD_CRC;
  87         if (!num_monitors) {
  88                 DRM_DEBUG_KMS("no client monitors configured\n");
  89                 return status;
  90         }
  91         if (num_monitors > qxl_num_crtc) {
  92                 DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
  93                               qxl_num_crtc, num_monitors);
  94                 num_monitors = qxl_num_crtc;
  95         } else {
  96                 num_monitors = qdev->rom->client_monitors_config.count;
  97         }
  98         if (qdev->client_monitors_config
  99               && (num_monitors != qdev->client_monitors_config->count)) {
 100                 status = MONITORS_CONFIG_MODIFIED;
 101         }
 102         if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
 103                 status = MONITORS_CONFIG_ERROR;
 104                 return status;
 105         }
 106         /* we copy max from the client but it isn't used */
 107         qdev->client_monitors_config->max_allowed = qxl_num_crtc;
 108         for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
 109                 struct qxl_urect *c_rect =
 110                         &qdev->rom->client_monitors_config.heads[i];
 111                 struct qxl_head *client_head =
 112                         &qdev->client_monitors_config->heads[i];
 113                 if (client_head->x != c_rect->left) {
 114                         client_head->x = c_rect->left;
 115                         status = MONITORS_CONFIG_MODIFIED;
 116                 }
 117                 if (client_head->y != c_rect->top) {
 118                         client_head->y = c_rect->top;
 119                         status = MONITORS_CONFIG_MODIFIED;
 120                 }
 121                 if (client_head->width != c_rect->right - c_rect->left) {
 122                         client_head->width = c_rect->right - c_rect->left;
 123                         status = MONITORS_CONFIG_MODIFIED;
 124                 }
 125                 if (client_head->height != c_rect->bottom - c_rect->top) {
 126                         client_head->height = c_rect->bottom - c_rect->top;
 127                         status = MONITORS_CONFIG_MODIFIED;
 128                 }
 129                 if (client_head->surface_id != 0) {
 130                         client_head->surface_id = 0;
 131                         status = MONITORS_CONFIG_MODIFIED;
 132                 }
 133                 if (client_head->id != i) {
 134                         client_head->id = i;
 135                         status = MONITORS_CONFIG_MODIFIED;
 136                 }
 137                 if (client_head->flags != 0) {
 138                         client_head->flags = 0;
 139                         status = MONITORS_CONFIG_MODIFIED;
 140                 }
 141                 DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
 142                           client_head->x, client_head->y);
 143         }
 144
 145         return status;
 146 }
 147
 148 static void qxl_update_offset_props(struct qxl_device *qdev)
 149 {
 150         struct drm_device *dev = &qdev->ddev;
 151         struct drm_connector *connector;
 152         struct qxl_output *output;
 153         struct qxl_head *head;
 154
 155         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 156                 output = drm_connector_to_qxl_output(connector);
 157
 158                 head = &qdev->client_monitors_config->heads[output->index];
 159
 160                 drm_object_property_set_value(&connector->base,
 161                         dev->mode_config.suggested_x_property, head->x);
 162                 drm_object_property_set_value(&connector->base,
 163                         dev->mode_config.suggested_y_property, head->y);
 164         }
 165 }
 166
 167 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
 168 {
 169         struct drm_device *dev = &qdev->ddev;
 170         struct drm_modeset_acquire_ctx ctx;
 171         int status, retries, ret;
 172
 173         for (retries = 0; retries < 10; retries++) {
 174                 status = qxl_display_copy_rom_client_monitors_config(qdev);
 175                 if (status != MONITORS_CONFIG_BAD_CRC)
 176                         break;
 177                 udelay(5);
 178         }
 179         if (status == MONITORS_CONFIG_ERROR) {
 180                 DRM_DEBUG_KMS("ignoring client monitors config: error");
 181                 return;
 182         }
 183         if (status == MONITORS_CONFIG_BAD_CRC) {
 184                 DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
 185                 return;
 186         }
 187         if (status == MONITORS_CONFIG_UNCHANGED) {
 188                 DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
 189                 return;
 190         }
 191
 192         DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 193         qxl_update_offset_props(qdev);
 194         DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 195         if (!drm_helper_hpd_irq_event(dev)) {
 196                 /* notify that the monitor configuration changed, to
 197                    adjust at the arbitrary resolution */
 198                 drm_kms_helper_hotplug_event(dev);
 199         }
 200 }
 201
 202 static int qxl_check_mode(struct qxl_device *qdev,
 203                           unsigned int width,
 204                           unsigned int height)
 205 {
 206         unsigned int stride;
 207         unsigned int size;
 208
 209         if (check_mul_overflow(width, 4u, &stride))
 210                 return -EINVAL;
 211         if (check_mul_overflow(stride, height, &size))
 212                 return -EINVAL;
 213         if (size > qdev->vram_size)
 214                 return -ENOMEM;
 215         return 0;
 216 }
 217
 218 static int qxl_check_framebuffer(struct qxl_device *qdev,
 219                                  struct qxl_bo *bo)
 220 {
 221         return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
 222 }
 223
 224 static int qxl_add_mode(struct drm_connector *connector,
 225                         unsigned int width,
 226                         unsigned int height,
 227                         bool preferred)
 228 {
 229         struct drm_device *dev = connector->dev;
 230         struct qxl_device *qdev = to_qxl(dev);
 231         struct drm_display_mode *mode = NULL;
 232         int rc;
 233
 234         rc = qxl_check_mode(qdev, width, height);
 235         if (rc != 0)
 236                 return 0;
 237
 238         mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
 239         if (preferred)
 240                 mode->type |= DRM_MODE_TYPE_PREFERRED;
 241         mode->hdisplay = width;
 242         mode->vdisplay = height;
 243         drm_mode_set_name(mode);
 244         drm_mode_probed_add(connector, mode);
 245         return 1;
 246 }
 247
 248 static int qxl_add_monitors_config_modes(struct drm_connector *connector)
 249 {
 250         struct drm_device *dev = connector->dev;
 251         struct qxl_device *qdev = to_qxl(dev);
 252         struct qxl_output *output = drm_connector_to_qxl_output(connector);
 253         int h = output->index;
 254         struct qxl_head *head;
 255
 256         if (!qdev->monitors_config)
 257                 return 0;
 258         if (h >= qxl_num_crtc)
 259                 return 0;
 260         if (!qdev->client_monitors_config)
 261                 return 0;
 262         if (h >= qdev->client_monitors_config->count)
 263                 return 0;
 264
 265         head = &qdev->client_monitors_config->heads[h];
 266         DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
 267
 268         return qxl_add_mode(connector, head->width, head->height, true);
 269 }
 270
 271 static struct mode_size {
 272         int w;
 273         int h;
 274 } extra_modes[] = {
 275         { 720,  480},
 276         {1152,  768},
 277         {1280,  854},
 278 };
 279
 280 static int qxl_add_extra_modes(struct drm_connector *connector)
 281 {
 282         int i, ret = 0;
 283
 284         for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
 285                 ret += qxl_add_mode(connector,
 286                                     extra_modes[i].w,
 287                                     extra_modes[i].h,
 288                                     false);
 289         return ret;
 290 }
 291
 292 static void qxl_send_monitors_config(struct qxl_device *qdev)
 293 {
 294         int i;
 295
 296         BUG_ON(!qdev->ram_header->monitors_config);
 297
 298         if (qdev->monitors_config->count == 0)
 299                 return;
 300
 301         for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
 302                 struct qxl_head *head = &qdev->monitors_config->heads[i];
 303
 304                 if (head->y > 8192 || head->x > 8192 ||
 305                     head->width > 8192 || head->height > 8192) {
 306                         DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
 307                                   i, head->width, head->height,
 308                                   head->x, head->y);
 309                         return;
 310                 }
 311         }
 312         qxl_io_monitors_config(qdev);
 313 }
 314
 315 static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
 316                                             const char *reason)
 317 {
 318         struct drm_device *dev = crtc->dev;
 319         struct qxl_device *qdev = to_qxl(dev);
 320         struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
 321         struct qxl_head head;
 322         int oldcount, i = qcrtc->index;
 323
 324         if (!qdev->primary_bo) {
 325                 DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
 326                 return;
 327         }
 328
 329         if (!qdev->monitors_config || qxl_num_crtc <= i)
 330                 return;
 331
 332         head.id = i;
 333         head.flags = 0;
 334         head.surface_id = 0;
 335         oldcount = qdev->monitors_config->count;
 336         if (crtc->state->active) {
 337                 struct drm_display_mode *mode = &crtc->mode;
 338
 339                 head.width = mode->hdisplay;
 340                 head.height = mode->vdisplay;
 341                 head.x = crtc->x;
 342                 head.y = crtc->y;
 343                 if (qdev->monitors_config->count < i + 1)
 344                         qdev->monitors_config->count = i + 1;
 345                 if (qdev->primary_bo == qdev->dumb_shadow_bo)
 346                         head.x += qdev->dumb_heads[i].x;
 347         } else if (i > 0) {
 348                 head.width = 0;
 349                 head.height = 0;
 350                 head.x = 0;
 351                 head.y = 0;
 352                 if (qdev->monitors_config->count == i + 1)
 353                         qdev->monitors_config->count = i;
 354         } else {
 355                 DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
 356                 return;
 357         }
 358
 359         if (head.width  == qdev->monitors_config->heads[i].width  &&
 360             head.height == qdev->monitors_config->heads[i].height &&
 361             head.x      == qdev->monitors_config->heads[i].x      &&
 362             head.y      == qdev->monitors_config->heads[i].y      &&
 363             oldcount    == qdev->monitors_config->count)
 364                 return;
 365
 366         DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
 367                       i, head.width, head.height, head.x, head.y,
 368                       crtc->state->active ? "on" : "off", reason);
 369         if (oldcount != qdev->monitors_config->count)
 370                 DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
 371                               oldcount, qdev->monitors_config->count,
 372                               qxl_num_crtc);
 373
 374         qdev->monitors_config->heads[i] = head;
 375         qdev->monitors_config->max_allowed = qxl_num_crtc;
 376         qxl_send_monitors_config(qdev);
 377 }
 378
 379 static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
 380                                   struct drm_atomic_state *state)
 381 {
 382         qxl_crtc_update_monitors_config(crtc, "flush");
 383 }
 384
 385 static void qxl_crtc_destroy(struct drm_crtc *crtc)
 386 {
 387         struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
 388
 389         qxl_bo_unref(&qxl_crtc->cursor_bo);
 390         drm_crtc_cleanup(crtc);
 391         kfree(qxl_crtc);
 392 }
 393
 394 static const struct drm_crtc_funcs qxl_crtc_funcs = {
 395         .set_config = drm_atomic_helper_set_config,
 396         .destroy = qxl_crtc_destroy,
 397         .page_flip = drm_atomic_helper_page_flip,
 398         .reset = drm_atomic_helper_crtc_reset,
 399         .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 400         .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 401 };
 402
 403 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
 404                                          struct drm_file *file_priv,
 405                                          unsigned int flags, unsigned int color,
 406                                          struct drm_clip_rect *clips,
 407                                          unsigned int num_clips)
 408 {
 409         /* TODO: vmwgfx where this was cribbed from had locking. Why? */
 410         struct qxl_device *qdev = to_qxl(fb->dev);
 411         struct drm_clip_rect norect;
 412         struct qxl_bo *qobj;
 413         struct drm_modeset_acquire_ctx ctx;
 414         bool is_primary;
 415         int inc = 1, ret;
 416
 417         DRM_MODESET_LOCK_ALL_BEGIN(fb->dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 418
 419         qobj = gem_to_qxl_bo(fb->obj[0]);
 420         /* if we aren't primary surface ignore this */
 421         is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
 422         if (!is_primary)
 423                 goto out_lock_end;
 424
 425         if (!num_clips) {
 426                 num_clips = 1;
 427                 clips = &norect;
 428                 norect.x1 = norect.y1 = 0;
 429                 norect.x2 = fb->width;
 430                 norect.y2 = fb->height;
 431         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 432                 num_clips /= 2;
 433                 inc = 2; /* skip source rects */
 434         }
 435
 436         qxl_draw_dirty_fb(qdev, fb, qobj, flags, color,
 437                           clips, num_clips, inc, 0);
 438
 439 out_lock_end:
 440         DRM_MODESET_LOCK_ALL_END(fb->dev, ctx, ret);
 441
 442         return 0;
 443 }
 444
 445 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
 446         .destroy = drm_gem_fb_destroy,
 447         .dirty = qxl_framebuffer_surface_dirty,
 448         .create_handle = drm_gem_fb_create_handle,
 449 };
 450
 451 static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
 452                                    struct drm_atomic_state *state)
 453 {
 454         qxl_crtc_update_monitors_config(crtc, "enable");
 455 }
 456
 457 static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
 458                                     struct drm_atomic_state *state)
 459 {
 460         qxl_crtc_update_monitors_config(crtc, "disable");
 461 }
 462
 463 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
 464         .atomic_flush = qxl_crtc_atomic_flush,
 465         .atomic_enable = qxl_crtc_atomic_enable,
 466         .atomic_disable = qxl_crtc_atomic_disable,
 467 };
 468
 469 static int qxl_primary_atomic_check(struct drm_plane *plane,
 470                                     struct drm_atomic_state *state)
 471 {
 472         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 473                                                                                  plane);
 474         struct qxl_device *qdev = to_qxl(plane->dev);
 475         struct qxl_bo *bo;
 476
 477         if (!new_plane_state->crtc || !new_plane_state->fb)
 478                 return 0;
 479
 480         bo = gem_to_qxl_bo(new_plane_state->fb->obj[0]);
 481
 482         return qxl_check_framebuffer(qdev, bo);
 483 }
 484
 485 static int qxl_primary_apply_cursor(struct qxl_device *qdev,
 486                                     struct drm_plane_state *plane_state)
 487 {
 488         struct drm_framebuffer *fb = plane_state->fb;
 489         struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 490         struct qxl_cursor_cmd *cmd;
 491         struct qxl_release *release;
 492         int ret = 0;
 493
 494         if (!qcrtc->cursor_bo)
 495                 return 0;
 496
 497         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 498                                          QXL_RELEASE_CURSOR_CMD,
 499                                          &release, NULL);
 500         if (ret)
 501                 return ret;
 502
 503         ret = qxl_release_list_add(release, qcrtc->cursor_bo);
 504         if (ret)
 505                 goto out_free_release;
 506
 507         ret = qxl_release_reserve_list(release, false);
 508         if (ret)
 509                 goto out_free_release;
 510
 511         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 512         cmd->type = QXL_CURSOR_SET;
 513         cmd->u.set.position.x = plane_state->crtc_x + fb->hot_x;
 514         cmd->u.set.position.y = plane_state->crtc_y + fb->hot_y;
 515
 516         cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
 517
 518         cmd->u.set.visible = 1;
 519         qxl_release_unmap(qdev, release, &cmd->release_info);
 520
 521         qxl_release_fence_buffer_objects(release);
 522         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 523
 524         return ret;
 525
 526 out_free_release:
 527         qxl_release_free(qdev, release);
 528         return ret;
 529 }
 530
 531 static int qxl_primary_move_cursor(struct qxl_device *qdev,
 532                                    struct drm_plane_state *plane_state)
 533 {
 534         struct drm_framebuffer *fb = plane_state->fb;
 535         struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 536         struct qxl_cursor_cmd *cmd;
 537         struct qxl_release *release;
 538         int ret = 0;
 539
 540         if (!qcrtc->cursor_bo)
 541                 return 0;
 542
 543         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 544                                          QXL_RELEASE_CURSOR_CMD,
 545                                          &release, NULL);
 546         if (ret)
 547                 return ret;
 548
 549         ret = qxl_release_reserve_list(release, true);
 550         if (ret) {
 551                 qxl_release_free(qdev, release);
 552                 return ret;
 553         }
 554
 555         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 556         cmd->type = QXL_CURSOR_MOVE;
 557         cmd->u.position.x = plane_state->crtc_x + fb->hot_x;
 558         cmd->u.position.y = plane_state->crtc_y + fb->hot_y;
 559         qxl_release_unmap(qdev, release, &cmd->release_info);
 560
 561         qxl_release_fence_buffer_objects(release);
 562         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 563         return ret;
 564 }
 565
 566 static struct qxl_bo *qxl_create_cursor(struct qxl_device *qdev,
 567                                         struct qxl_bo *user_bo,
 568                                         int hot_x, int hot_y)
 569 {
 570         static const u32 size = 64 * 64 * 4;
 571         struct qxl_bo *cursor_bo;
 572         struct iosys_map cursor_map;
 573         struct iosys_map user_map;
 574         struct qxl_cursor cursor;
 575         int ret;
 576
 577         if (!user_bo)
 578                 return NULL;
 579
 580         ret = qxl_bo_create(qdev, sizeof(struct qxl_cursor) + size,
 581                             false, true, QXL_GEM_DOMAIN_VRAM, 1,
 582                             NULL, &cursor_bo);
 583         if (ret)
 584                 goto err;
 585
 586         ret = qxl_bo_vmap(cursor_bo, &cursor_map);
 587         if (ret)
 588                 goto err_unref;
 589
 590         ret = qxl_bo_vmap(user_bo, &user_map);
 591         if (ret)
 592                 goto err_unmap;
 593
 594         cursor.header.unique = 0;
 595         cursor.header.type = SPICE_CURSOR_TYPE_ALPHA;
 596         cursor.header.width = 64;
 597         cursor.header.height = 64;
 598         cursor.header.hot_spot_x = hot_x;
 599         cursor.header.hot_spot_y = hot_y;
 600         cursor.data_size = size;
 601         cursor.chunk.next_chunk = 0;
 602         cursor.chunk.prev_chunk = 0;
 603         cursor.chunk.data_size = size;
 604         if (cursor_map.is_iomem) {
 605                 memcpy_toio(cursor_map.vaddr_iomem,
 606                             &cursor, sizeof(cursor));
 607                 memcpy_toio(cursor_map.vaddr_iomem + sizeof(cursor),
 608                             user_map.vaddr, size);
 609         } else {
 610                 memcpy(cursor_map.vaddr,
 611                        &cursor, sizeof(cursor));
 612                 memcpy(cursor_map.vaddr + sizeof(cursor),
 613                        user_map.vaddr, size);
 614         }
 615
 616         qxl_bo_vunmap(user_bo);
 617         qxl_bo_vunmap(cursor_bo);
 618         return cursor_bo;
 619
 620 err_unmap:
 621         qxl_bo_vunmap(cursor_bo);
 622 err_unref:
 623         qxl_bo_unpin(cursor_bo);
 624         qxl_bo_unref(&cursor_bo);
 625 err:
 626         return NULL;
 627 }
 628
 629 static void qxl_free_cursor(struct qxl_bo *cursor_bo)
 630 {
 631         if (!cursor_bo)
 632                 return;
 633
 634         qxl_bo_unpin(cursor_bo);
 635         qxl_bo_unref(&cursor_bo);
 636 }
 637
 638 static void qxl_primary_atomic_update(struct drm_plane *plane,
 639                                       struct drm_atomic_state *state)
 640 {
 641         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 642                                                                            plane);
 643         struct qxl_device *qdev = to_qxl(plane->dev);
 644         struct qxl_bo *bo = gem_to_qxl_bo(new_state->fb->obj[0]);
 645         struct qxl_bo *primary;
 646         struct drm_clip_rect norect = {
 647             .x1 = 0,
 648             .y1 = 0,
 649             .x2 = new_state->fb->width,
 650             .y2 = new_state->fb->height
 651         };
 652         uint32_t dumb_shadow_offset = 0;
 653
 654         primary = bo->shadow ? bo->shadow : bo;
 655
 656         if (!primary->is_primary) {
 657                 if (qdev->primary_bo)
 658                         qxl_io_destroy_primary(qdev);
 659                 qxl_io_create_primary(qdev, primary);
 660                 qxl_primary_apply_cursor(qdev, plane->state);
 661         }
 662
 663         if (bo->is_dumb)
 664                 dumb_shadow_offset =
 665                         qdev->dumb_heads[new_state->crtc->index].x;
 666
 667         qxl_draw_dirty_fb(qdev, new_state->fb, bo, 0, 0, &norect, 1, 1,
 668                           dumb_shadow_offset);
 669 }
 670
 671 static void qxl_primary_atomic_disable(struct drm_plane *plane,
 672                                        struct drm_atomic_state *state)
 673 {
 674         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 675                                                                            plane);
 676         struct qxl_device *qdev = to_qxl(plane->dev);
 677
 678         if (old_state->fb) {
 679                 struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
 680
 681                 if (bo->shadow)
 682                         bo = bo->shadow;
 683                 if (bo->is_primary)
 684                         qxl_io_destroy_primary(qdev);
 685         }
 686 }
 687
 688 static void qxl_cursor_atomic_update(struct drm_plane *plane,
 689                                      struct drm_atomic_state *state)
 690 {
 691         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 692                                                                            plane);
 693         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 694                                                                            plane);
 695         struct qxl_device *qdev = to_qxl(plane->dev);
 696         struct drm_framebuffer *fb = new_state->fb;
 697
 698         if (fb != old_state->fb) {
 699                 qxl_primary_apply_cursor(qdev, new_state);
 700         } else {
 701                 qxl_primary_move_cursor(qdev, new_state);
 702         }
 703 }
 704
 705 static void qxl_cursor_atomic_disable(struct drm_plane *plane,
 706                                       struct drm_atomic_state *state)
 707 {
 708         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 709                                                                            plane);
 710         struct qxl_device *qdev = to_qxl(plane->dev);
 711         struct qxl_crtc *qcrtc;
 712         struct qxl_release *release;
 713         struct qxl_cursor_cmd *cmd;
 714         int ret;
 715
 716         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 717                                          QXL_RELEASE_CURSOR_CMD,
 718                                          &release, NULL);
 719         if (ret)
 720                 return;
 721
 722         ret = qxl_release_reserve_list(release, true);
 723         if (ret) {
 724                 qxl_release_free(qdev, release);
 725                 return;
 726         }
 727
 728         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 729         cmd->type = QXL_CURSOR_HIDE;
 730         qxl_release_unmap(qdev, release, &cmd->release_info);
 731
 732         qxl_release_fence_buffer_objects(release);
 733         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 734
 735         qcrtc = to_qxl_crtc(old_state->crtc);
 736         qxl_free_cursor(qcrtc->cursor_bo);
 737         qcrtc->cursor_bo = NULL;
 738 }
 739
 740 static void qxl_update_dumb_head(struct qxl_device *qdev,
 741                                  int index, struct qxl_bo *bo)
 742 {
 743         uint32_t width, height;
 744
 745         if (index >= qdev->monitors_config->max_allowed)
 746                 return;
 747
 748         if (bo && bo->is_dumb) {
 749                 width = bo->surf.width;
 750                 height = bo->surf.height;
 751         } else {
 752                 width = 0;
 753                 height = 0;
 754         }
 755
 756         if (qdev->dumb_heads[index].width == width &&
 757             qdev->dumb_heads[index].height == height)
 758                 return;
 759
 760         DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
 761                   qdev->dumb_heads[index].width,
 762                   qdev->dumb_heads[index].height,
 763                   width, height);
 764         qdev->dumb_heads[index].width = width;
 765         qdev->dumb_heads[index].height = height;
 766 }
 767
 768 static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
 769                                  struct qxl_surface *surf)
 770 {
 771         struct qxl_head *head;
 772         int i;
 773
 774         memset(surf, 0, sizeof(*surf));
 775         for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
 776                 head = qdev->dumb_heads + i;
 777                 head->x = surf->width;
 778                 surf->width += head->width;
 779                 if (surf->height < head->height)
 780                         surf->height = head->height;
 781         }
 782         if (surf->width < 64)
 783                 surf->width = 64;
 784         if (surf->height < 64)
 785                 surf->height = 64;
 786         surf->format = SPICE_SURFACE_FMT_32_xRGB;
 787         surf->stride = surf->width * 4;
 788
 789         if (!qdev->dumb_shadow_bo ||
 790             qdev->dumb_shadow_bo->surf.width != surf->width ||
 791             qdev->dumb_shadow_bo->surf.height != surf->height)
 792                 DRM_DEBUG("%dx%d\n", surf->width, surf->height);
 793 }
 794
 795 static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
 796                                int crtc_index)
 797 {
 798         struct qxl_surface surf;
 799
 800         qxl_update_dumb_head(qdev, crtc_index,
 801                              user_bo);
 802         qxl_calc_dumb_shadow(qdev, &surf);
 803         if (!qdev->dumb_shadow_bo ||
 804             qdev->dumb_shadow_bo->surf.width  != surf.width ||
 805             qdev->dumb_shadow_bo->surf.height != surf.height) {
 806                 if (qdev->dumb_shadow_bo) {
 807                         qxl_bo_unpin(qdev->dumb_shadow_bo);
 808                         drm_gem_object_put
 809                                 (&qdev->dumb_shadow_bo->tbo.base);
 810                         qdev->dumb_shadow_bo = NULL;
 811                 }
 812                 qxl_bo_create(qdev, surf.height * surf.stride,
 813                               true, true, QXL_GEM_DOMAIN_SURFACE, 0,
 814                               &surf, &qdev->dumb_shadow_bo);
 815         }
 816         if (user_bo->shadow != qdev->dumb_shadow_bo) {
 817                 if (user_bo->shadow) {
 818                         qxl_bo_unpin(user_bo->shadow);
 819                         drm_gem_object_put
 820                                 (&user_bo->shadow->tbo.base);
 821                         user_bo->shadow = NULL;
 822                 }
 823                 drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
 824                 user_bo->shadow = qdev->dumb_shadow_bo;
 825                 qxl_bo_pin(user_bo->shadow);
 826         }
 827 }
 828
 829 static int qxl_plane_prepare_fb(struct drm_plane *plane,
 830                                 struct drm_plane_state *new_state)
 831 {
 832         struct qxl_device *qdev = to_qxl(plane->dev);
 833         struct drm_gem_object *obj;
 834         struct qxl_bo *user_bo;
 835         int ret;
 836
 837         if (!new_state->fb)
 838                 return 0;
 839
 840         obj = new_state->fb->obj[0];
 841         user_bo = gem_to_qxl_bo(obj);
 842
 843         if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
 844             user_bo->is_dumb) {
 845                 qxl_prepare_shadow(qdev, user_bo, new_state->crtc->index);
 846         }
 847
 848         if (plane->type == DRM_PLANE_TYPE_CURSOR &&
 849             plane->state->fb != new_state->fb) {
 850                 struct qxl_crtc *qcrtc = to_qxl_crtc(new_state->crtc);
 851                 struct qxl_bo *old_cursor_bo = qcrtc->cursor_bo;
 852
 853                 qcrtc->cursor_bo = qxl_create_cursor(qdev, user_bo,
 854                                                      new_state->fb->hot_x,
 855                                                      new_state->fb->hot_y);
 856                 qxl_free_cursor(old_cursor_bo);
 857         }
 858
 859         ret = qxl_bo_pin(user_bo);
 860         if (ret)
 861                 return ret;
 862
 863         return drm_gem_plane_helper_prepare_fb(plane, new_state);
 864 }
 865
 866 static void qxl_plane_cleanup_fb(struct drm_plane *plane,
 867                                  struct drm_plane_state *old_state)
 868 {
 869         struct drm_gem_object *obj;
 870         struct qxl_bo *user_bo;
 871
 872         if (!old_state->fb) {
 873                 /*
 874                  * we never executed prepare_fb, so there's nothing to
 875                  * unpin.
 876                  */
 877                 return;
 878         }
 879
 880         obj = old_state->fb->obj[0];
 881         user_bo = gem_to_qxl_bo(obj);
 882         qxl_bo_unpin(user_bo);
 883
 884         if (old_state->fb != plane->state->fb && user_bo->shadow) {
 885                 qxl_bo_unpin(user_bo->shadow);
 886                 drm_gem_object_put(&user_bo->shadow->tbo.base);
 887                 user_bo->shadow = NULL;
 888         }
 889 }
 890
 891 static const uint32_t qxl_cursor_plane_formats[] = {
 892         DRM_FORMAT_ARGB8888,
 893 };
 894
 895 static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
 896         .atomic_update = qxl_cursor_atomic_update,
 897         .atomic_disable = qxl_cursor_atomic_disable,
 898         .prepare_fb = qxl_plane_prepare_fb,
 899         .cleanup_fb = qxl_plane_cleanup_fb,
 900 };
 901
 902 static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
 903         .update_plane   = drm_atomic_helper_update_plane,
 904         .disable_plane  = drm_atomic_helper_disable_plane,
 905         .destroy        = drm_plane_helper_destroy,
 906         .reset          = drm_atomic_helper_plane_reset,
 907         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 908         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 909 };
 910
 911 static const uint32_t qxl_primary_plane_formats[] = {
 912         DRM_FORMAT_XRGB8888,
 913         DRM_FORMAT_ARGB8888,
 914 };
 915
 916 static const struct drm_plane_helper_funcs primary_helper_funcs = {
 917         .atomic_check = qxl_primary_atomic_check,
 918         .atomic_update = qxl_primary_atomic_update,
 919         .atomic_disable = qxl_primary_atomic_disable,
 920         .prepare_fb = qxl_plane_prepare_fb,
 921         .cleanup_fb = qxl_plane_cleanup_fb,
 922 };
 923
 924 static const struct drm_plane_funcs qxl_primary_plane_funcs = {
 925         .update_plane   = drm_atomic_helper_update_plane,
 926         .disable_plane  = drm_atomic_helper_disable_plane,
 927         .destroy        = drm_plane_helper_destroy,
 928         .reset          = drm_atomic_helper_plane_reset,
 929         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 930         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 931 };
 932
 933 static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
 934                                           unsigned int possible_crtcs,
 935                                           enum drm_plane_type type)
 936 {
 937         const struct drm_plane_helper_funcs *helper_funcs = NULL;
 938         struct drm_plane *plane;
 939         const struct drm_plane_funcs *funcs;
 940         const uint32_t *formats;
 941         int num_formats;
 942         int err;
 943
 944         if (type == DRM_PLANE_TYPE_PRIMARY) {
 945                 funcs = &qxl_primary_plane_funcs;
 946                 formats = qxl_primary_plane_formats;
 947                 num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
 948                 helper_funcs = &primary_helper_funcs;
 949         } else if (type == DRM_PLANE_TYPE_CURSOR) {
 950                 funcs = &qxl_cursor_plane_funcs;
 951                 formats = qxl_cursor_plane_formats;
 952                 helper_funcs = &qxl_cursor_helper_funcs;
 953                 num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
 954         } else {
 955                 return ERR_PTR(-EINVAL);
 956         }
 957
 958         plane = kzalloc(sizeof(*plane), GFP_KERNEL);
 959         if (!plane)
 960                 return ERR_PTR(-ENOMEM);
 961
 962         err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
 963                                        funcs, formats, num_formats,
 964                                        NULL, type, NULL);
 965         if (err)
 966                 goto free_plane;
 967
 968         drm_plane_helper_add(plane, helper_funcs);
 969
 970         return plane;
 971
 972 free_plane:
 973         kfree(plane);
 974         return ERR_PTR(-EINVAL);
 975 }
 976
 977 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
 978 {
 979         struct qxl_crtc *qxl_crtc;
 980         struct drm_plane *primary, *cursor;
 981         struct qxl_device *qdev = to_qxl(dev);
 982         int r;
 983
 984         qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
 985         if (!qxl_crtc)
 986                 return -ENOMEM;
 987
 988         primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
 989         if (IS_ERR(primary)) {
 990                 r = -ENOMEM;
 991                 goto free_mem;
 992         }
 993
 994         cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
 995         if (IS_ERR(cursor)) {
 996                 r = -ENOMEM;
 997                 goto clean_primary;
 998         }
 999
1000         r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
1001                                       &qxl_crtc_funcs, NULL);
1002         if (r)
1003                 goto clean_cursor;
1004
1005         qxl_crtc->index = crtc_id;
1006         drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
1007         return 0;
1008
1009 clean_cursor:
1010         drm_plane_cleanup(cursor);
1011         kfree(cursor);
1012 clean_primary:
1013         drm_plane_cleanup(primary);
1014         kfree(primary);
1015 free_mem:
1016         kfree(qxl_crtc);
1017         return r;
1018 }
1019
1020 static int qxl_conn_get_modes(struct drm_connector *connector)
1021 {
1022         struct drm_device *dev = connector->dev;
1023         struct qxl_device *qdev = to_qxl(dev);
1024         struct qxl_output *output = drm_connector_to_qxl_output(connector);
1025         unsigned int pwidth = 1024;
1026         unsigned int pheight = 768;
1027         int ret = 0;
1028
1029         if (qdev->client_monitors_config) {
1030                 struct qxl_head *head;
1031                 head = &qdev->client_monitors_config->heads[output->index];
1032                 if (head->width)
1033                         pwidth = head->width;
1034                 if (head->height)
1035                         pheight = head->height;
1036         }
1037
1038         ret += drm_add_modes_noedid(connector, 8192, 8192);
1039         ret += qxl_add_extra_modes(connector);
1040         ret += qxl_add_monitors_config_modes(connector);
1041         drm_set_preferred_mode(connector, pwidth, pheight);
1042         return ret;
1043 }
1044
1045 static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
1046                                struct drm_display_mode *mode)
1047 {
1048         struct drm_device *ddev = connector->dev;
1049         struct qxl_device *qdev = to_qxl(ddev);
1050
1051         if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
1052                 return MODE_BAD;
1053
1054         return MODE_OK;
1055 }
1056
1057 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1058 {
1059         struct qxl_output *qxl_output =
1060                 drm_connector_to_qxl_output(connector);
1061
1062         DRM_DEBUG("\n");
1063         return &qxl_output->enc;
1064 }
1065
1066 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1067         .get_modes = qxl_conn_get_modes,
1068         .mode_valid = qxl_conn_mode_valid,
1069         .best_encoder = qxl_best_encoder,
1070 };
1071
1072 static enum drm_connector_status qxl_conn_detect(
1073                         struct drm_connector *connector,
1074                         bool force)
1075 {
1076         struct qxl_output *output =
1077                 drm_connector_to_qxl_output(connector);
1078         struct drm_device *ddev = connector->dev;
1079         struct qxl_device *qdev = to_qxl(ddev);
1080         bool connected = false;
1081
1082         /* The first monitor is always connected */
1083         if (!qdev->client_monitors_config) {
1084                 if (output->index == 0)
1085                         connected = true;
1086         } else
1087                 connected = qdev->client_monitors_config->count > output->index &&
1088                      qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1089
1090         DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1091
1092         return connected ? connector_status_connected
1093                          : connector_status_disconnected;
1094 }
1095
1096 static void qxl_conn_destroy(struct drm_connector *connector)
1097 {
1098         struct qxl_output *qxl_output =
1099                 drm_connector_to_qxl_output(connector);
1100
1101         drm_connector_unregister(connector);
1102         drm_connector_cleanup(connector);
1103         kfree(qxl_output);
1104 }
1105
1106 static const struct drm_connector_funcs qxl_connector_funcs = {
1107         .detect = qxl_conn_detect,
1108         .fill_modes = drm_helper_probe_single_connector_modes,
1109         .destroy = qxl_conn_destroy,
1110         .reset = drm_atomic_helper_connector_reset,
1111         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1112         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1113 };
1114
1115 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1116 {
1117         if (qdev->hotplug_mode_update_property)
1118                 return 0;
1119
1120         qdev->hotplug_mode_update_property =
1121                 drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1122                                           "hotplug_mode_update", 0, 1);
1123
1124         return 0;
1125 }
1126
1127 static int qdev_output_init(struct drm_device *dev, int num_output)
1128 {
1129         struct qxl_device *qdev = to_qxl(dev);
1130         struct qxl_output *qxl_output;
1131         struct drm_connector *connector;
1132         struct drm_encoder *encoder;
1133         int ret;
1134
1135         qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1136         if (!qxl_output)
1137                 return -ENOMEM;
1138
1139         qxl_output->index = num_output;
1140
1141         connector = &qxl_output->base;
1142         encoder = &qxl_output->enc;
1143         drm_connector_init(dev, &qxl_output->base,
1144                            &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1145
1146         ret = drm_simple_encoder_init(dev, &qxl_output->enc,
1147                                       DRM_MODE_ENCODER_VIRTUAL);
1148         if (ret) {
1149                 drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
1150                         ret);
1151                 goto err_drm_connector_cleanup;
1152         }
1153
1154         /* we get HPD via client monitors config */
1155         connector->polled = DRM_CONNECTOR_POLL_HPD;
1156         encoder->possible_crtcs = 1 << num_output;
1157         drm_connector_attach_encoder(&qxl_output->base,
1158                                           &qxl_output->enc);
1159         drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1160
1161         drm_object_attach_property(&connector->base,
1162                                    qdev->hotplug_mode_update_property, 0);
1163         drm_object_attach_property(&connector->base,
1164                                    dev->mode_config.suggested_x_property, 0);
1165         drm_object_attach_property(&connector->base,
1166                                    dev->mode_config.suggested_y_property, 0);
1167         return 0;
1168
1169 err_drm_connector_cleanup:
1170         drm_connector_cleanup(&qxl_output->base);
1171         kfree(qxl_output);
1172         return ret;
1173 }
1174
1175 static struct drm_framebuffer *
1176 qxl_user_framebuffer_create(struct drm_device *dev,
1177                             struct drm_file *file_priv,
1178                             const struct drm_mode_fb_cmd2 *mode_cmd)
1179 {
1180         return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
1181                                             &qxl_fb_funcs);
1182 }
1183
1184 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1185         .fb_create = qxl_user_framebuffer_create,
1186         .atomic_check = drm_atomic_helper_check,
1187         .atomic_commit = drm_atomic_helper_commit,
1188 };
1189
1190 int qxl_create_monitors_object(struct qxl_device *qdev)
1191 {
1192         int ret;
1193         struct drm_gem_object *gobj;
1194         struct iosys_map map;
1195         int monitors_config_size = sizeof(struct qxl_monitors_config) +
1196                 qxl_num_crtc * sizeof(struct qxl_head);
1197
1198         ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1199                                     QXL_GEM_DOMAIN_VRAM,
1200                                     false, false, NULL, &gobj);
1201         if (ret) {
1202                 DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1203                 return -ENOMEM;
1204         }
1205         qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1206
1207         ret = qxl_bo_vmap(qdev->monitors_config_bo, &map);
1208         if (ret)
1209                 return ret;
1210
1211         qdev->monitors_config = qdev->monitors_config_bo->kptr;
1212         qdev->ram_header->monitors_config =
1213                 qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1214
1215         memset(qdev->monitors_config, 0, monitors_config_size);
1216         qdev->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
1217                                    GFP_KERNEL);
1218         if (!qdev->dumb_heads) {
1219                 qxl_destroy_monitors_object(qdev);
1220                 return -ENOMEM;
1221         }
1222         return 0;
1223 }
1224
1225 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1226 {
1227         int ret;
1228
1229         if (!qdev->monitors_config_bo)
1230                 return 0;
1231
1232         qdev->monitors_config = NULL;
1233         qdev->ram_header->monitors_config = 0;
1234
1235         ret = qxl_bo_vunmap(qdev->monitors_config_bo);
1236         if (ret)
1237                 return ret;
1238
1239         qxl_bo_unref(&qdev->monitors_config_bo);
1240         return 0;
1241 }
1242
1243 int qxl_modeset_init(struct qxl_device *qdev)
1244 {
1245         int i;
1246         int ret;
1247
1248         ret = drmm_mode_config_init(&qdev->ddev);
1249         if (ret)
1250                 return ret;
1251
1252         ret = qxl_create_monitors_object(qdev);
1253         if (ret)
1254                 return ret;
1255
1256         qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1257
1258         /* modes will be validated against the framebuffer size */
1259         qdev->ddev.mode_config.min_width = 0;
1260         qdev->ddev.mode_config.min_height = 0;
1261         qdev->ddev.mode_config.max_width = 8192;
1262         qdev->ddev.mode_config.max_height = 8192;
1263
1264         drm_mode_create_suggested_offset_properties(&qdev->ddev);
1265         qxl_mode_create_hotplug_mode_update_property(qdev);
1266
1267         for (i = 0 ; i < qxl_num_crtc; ++i) {
1268                 qdev_crtc_init(&qdev->ddev, i);
1269                 qdev_output_init(&qdev->ddev, i);
1270         }
1271
1272         qxl_display_read_client_monitors_config(qdev);
1273
1274         drm_mode_config_reset(&qdev->ddev);
1275         return 0;
1276 }
1277
1278 void qxl_modeset_fini(struct qxl_device *qdev)
1279 {
1280         if (qdev->dumb_shadow_bo) {
1281                 qxl_bo_unpin(qdev->dumb_shadow_bo);
1282                 drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
1283                 qdev->dumb_shadow_bo = NULL;
1284         }
1285         qxl_destroy_monitors_object(qdev);
1286 }