drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29 #include <drm/drm_plane_helper.h>
  30 #include <drm/drm_atomic.h>
  31 #include <drm/drm_atomic_helper.h>
  32 #include <drm/drm_rect.h>
  33
  34 /* Might need a hrtimer here? */
  35 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
  36
  37 void vmw_du_cleanup(struct vmw_display_unit *du)
  38 {
  39         drm_plane_cleanup(&du->primary);
  40         drm_plane_cleanup(&du->cursor);
  41
  42         drm_connector_unregister(&du->connector);
  43         drm_crtc_cleanup(&du->crtc);
  44         drm_encoder_cleanup(&du->encoder);
  45         drm_connector_cleanup(&du->connector);
  46 }
  47
  48 /*
  49  * Display Unit Cursor functions
  50  */
  51
  52 static int vmw_cursor_update_image(struct vmw_private *dev_priv,
  53                                    u32 *image, u32 width, u32 height,
  54                                    u32 hotspotX, u32 hotspotY)
  55 {
  56         struct {
  57                 u32 cmd;
  58                 SVGAFifoCmdDefineAlphaCursor cursor;
  59         } *cmd;
  60         u32 image_size = width * height * 4;
  61         u32 cmd_size = sizeof(*cmd) + image_size;
  62
  63         if (!image)
  64                 return -EINVAL;
  65
  66         cmd = vmw_fifo_reserve(dev_priv, cmd_size);
  67         if (unlikely(cmd == NULL)) {
  68                 DRM_ERROR("Fifo reserve failed.\n");
  69                 return -ENOMEM;
  70         }
  71
  72         memset(cmd, 0, sizeof(*cmd));
  73
  74         memcpy(&cmd[1], image, image_size);
  75
  76         cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
  77         cmd->cursor.id = 0;
  78         cmd->cursor.width = width;
  79         cmd->cursor.height = height;
  80         cmd->cursor.hotspotX = hotspotX;
  81         cmd->cursor.hotspotY = hotspotY;
  82
  83         vmw_fifo_commit_flush(dev_priv, cmd_size);
  84
  85         return 0;
  86 }
  87
  88 static int vmw_cursor_update_bo(struct vmw_private *dev_priv,
  89                                 struct vmw_buffer_object *bo,
  90                                 u32 width, u32 height,
  91                                 u32 hotspotX, u32 hotspotY)
  92 {
  93         struct ttm_bo_kmap_obj map;
  94         unsigned long kmap_offset;
  95         unsigned long kmap_num;
  96         void *virtual;
  97         bool dummy;
  98         int ret;
  99
 100         kmap_offset = 0;
 101         kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
 102
 103         ret = ttm_bo_reserve(&bo->base, true, false, NULL);
 104         if (unlikely(ret != 0)) {
 105                 DRM_ERROR("reserve failed\n");
 106                 return -EINVAL;
 107         }
 108
 109         ret = ttm_bo_kmap(&bo->base, kmap_offset, kmap_num, &map);
 110         if (unlikely(ret != 0))
 111                 goto err_unreserve;
 112
 113         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 114         ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
 115                                       hotspotX, hotspotY);
 116
 117         ttm_bo_kunmap(&map);
 118 err_unreserve:
 119         ttm_bo_unreserve(&bo->base);
 120
 121         return ret;
 122 }
 123
 124
 125 static void vmw_cursor_update_position(struct vmw_private *dev_priv,
 126                                        bool show, int x, int y)
 127 {
 128         u32 *fifo_mem = dev_priv->mmio_virt;
 129         uint32_t count;
 130
 131         spin_lock(&dev_priv->cursor_lock);
 132         vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
 133         vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
 134         vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
 135         count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 136         vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
 137         spin_unlock(&dev_priv->cursor_lock);
 138 }
 139
 140
 141 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 142                           struct ttm_object_file *tfile,
 143                           struct ttm_buffer_object *bo,
 144                           SVGA3dCmdHeader *header)
 145 {
 146         struct ttm_bo_kmap_obj map;
 147         unsigned long kmap_offset;
 148         unsigned long kmap_num;
 149         SVGA3dCopyBox *box;
 150         unsigned box_count;
 151         void *virtual;
 152         bool dummy;
 153         struct vmw_dma_cmd {
 154                 SVGA3dCmdHeader header;
 155                 SVGA3dCmdSurfaceDMA dma;
 156         } *cmd;
 157         int i, ret;
 158
 159         cmd = container_of(header, struct vmw_dma_cmd, header);
 160
 161         /* No snooper installed */
 162         if (!srf->snooper.image)
 163                 return;
 164
 165         if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
 166                 DRM_ERROR("face and mipmap for cursors should never != 0\n");
 167                 return;
 168         }
 169
 170         if (cmd->header.size < 64) {
 171                 DRM_ERROR("at least one full copy box must be given\n");
 172                 return;
 173         }
 174
 175         box = (SVGA3dCopyBox *)&cmd[1];
 176         box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
 177                         sizeof(SVGA3dCopyBox);
 178
 179         if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
 180             box->x != 0    || box->y != 0    || box->z != 0    ||
 181             box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
 182             box->d != 1    || box_count != 1) {
 183                 /* TODO handle none page aligned offsets */
 184                 /* TODO handle more dst & src != 0 */
 185                 /* TODO handle more then one copy */
 186                 DRM_ERROR("Cant snoop dma request for cursor!\n");
 187                 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
 188                           box->srcx, box->srcy, box->srcz,
 189                           box->x, box->y, box->z,
 190                           box->w, box->h, box->d, box_count,
 191                           cmd->dma.guest.ptr.offset);
 192                 return;
 193         }
 194
 195         kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
 196         kmap_num = (64*64*4) >> PAGE_SHIFT;
 197
 198         ret = ttm_bo_reserve(bo, true, false, NULL);
 199         if (unlikely(ret != 0)) {
 200                 DRM_ERROR("reserve failed\n");
 201                 return;
 202         }
 203
 204         ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
 205         if (unlikely(ret != 0))
 206                 goto err_unreserve;
 207
 208         virtual = ttm_kmap_obj_virtual(&map, &dummy);
 209
 210         if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
 211                 memcpy(srf->snooper.image, virtual, 64*64*4);
 212         } else {
 213                 /* Image is unsigned pointer. */
 214                 for (i = 0; i < box->h; i++)
 215                         memcpy(srf->snooper.image + i * 64,
 216                                virtual + i * cmd->dma.guest.pitch,
 217                                box->w * 4);
 218         }
 219
 220         srf->snooper.age++;
 221
 222         ttm_bo_kunmap(&map);
 223 err_unreserve:
 224         ttm_bo_unreserve(bo);
 225 }
 226
 227 /**
 228  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
 229  *
 230  * @dev_priv: Pointer to the device private struct.
 231  *
 232  * Clears all legacy hotspots.
 233  */
 234 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
 235 {
 236         struct drm_device *dev = dev_priv->dev;
 237         struct vmw_display_unit *du;
 238         struct drm_crtc *crtc;
 239
 240         drm_modeset_lock_all(dev);
 241         drm_for_each_crtc(crtc, dev) {
 242                 du = vmw_crtc_to_du(crtc);
 243
 244                 du->hotspot_x = 0;
 245                 du->hotspot_y = 0;
 246         }
 247         drm_modeset_unlock_all(dev);
 248 }
 249
 250 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
 251 {
 252         struct drm_device *dev = dev_priv->dev;
 253         struct vmw_display_unit *du;
 254         struct drm_crtc *crtc;
 255
 256         mutex_lock(&dev->mode_config.mutex);
 257
 258         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 259                 du = vmw_crtc_to_du(crtc);
 260                 if (!du->cursor_surface ||
 261                     du->cursor_age == du->cursor_surface->snooper.age)
 262                         continue;
 263
 264                 du->cursor_age = du->cursor_surface->snooper.age;
 265                 vmw_cursor_update_image(dev_priv,
 266                                         du->cursor_surface->snooper.image,
 267                                         64, 64,
 268                                         du->hotspot_x + du->core_hotspot_x,
 269                                         du->hotspot_y + du->core_hotspot_y);
 270         }
 271
 272         mutex_unlock(&dev->mode_config.mutex);
 273 }
 274
 275
 276 void vmw_du_cursor_plane_destroy(struct drm_plane *plane)
 277 {
 278         vmw_cursor_update_position(plane->dev->dev_private, false, 0, 0);
 279
 280         drm_plane_cleanup(plane);
 281 }
 282
 283
 284 void vmw_du_primary_plane_destroy(struct drm_plane *plane)
 285 {
 286         drm_plane_cleanup(plane);
 287
 288         /* Planes are static in our case so we don't free it */
 289 }
 290
 291
 292 /**
 293  * vmw_du_vps_unpin_surf - unpins resource associated with a framebuffer surface
 294  *
 295  * @vps: plane state associated with the display surface
 296  * @unreference: true if we also want to unreference the display.
 297  */
 298 void vmw_du_plane_unpin_surf(struct vmw_plane_state *vps,
 299                              bool unreference)
 300 {
 301         if (vps->surf) {
 302                 if (vps->pinned) {
 303                         vmw_resource_unpin(&vps->surf->res);
 304                         vps->pinned--;
 305                 }
 306
 307                 if (unreference) {
 308                         if (vps->pinned)
 309                                 DRM_ERROR("Surface still pinned\n");
 310                         vmw_surface_unreference(&vps->surf);
 311                 }
 312         }
 313 }
 314
 315
 316 /**
 317  * vmw_du_plane_cleanup_fb - Unpins the cursor
 318  *
 319  * @plane:  display plane
 320  * @old_state: Contains the FB to clean up
 321  *
 322  * Unpins the framebuffer surface
 323  *
 324  * Returns 0 on success
 325  */
 326 void
 327 vmw_du_plane_cleanup_fb(struct drm_plane *plane,
 328                         struct drm_plane_state *old_state)
 329 {
 330         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
 331
 332         vmw_du_plane_unpin_surf(vps, false);
 333 }
 334
 335
 336 /**
 337  * vmw_du_cursor_plane_prepare_fb - Readies the cursor by referencing it
 338  *
 339  * @plane:  display plane
 340  * @new_state: info on the new plane state, including the FB
 341  *
 342  * Returns 0 on success
 343  */
 344 int
 345 vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
 346                                struct drm_plane_state *new_state)
 347 {
 348         struct drm_framebuffer *fb = new_state->fb;
 349         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
 350
 351
 352         if (vps->surf)
 353                 vmw_surface_unreference(&vps->surf);
 354
 355         if (vps->bo)
 356                 vmw_bo_unreference(&vps->bo);
 357
 358         if (fb) {
 359                 if (vmw_framebuffer_to_vfb(fb)->bo) {
 360                         vps->bo = vmw_framebuffer_to_vfbd(fb)->buffer;
 361                         vmw_bo_reference(vps->bo);
 362                 } else {
 363                         vps->surf = vmw_framebuffer_to_vfbs(fb)->surface;
 364                         vmw_surface_reference(vps->surf);
 365                 }
 366         }
 367
 368         return 0;
 369 }
 370
 371
 372 void
 373 vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
 374                                   struct drm_plane_state *old_state)
 375 {
 376         struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
 377         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 378         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 379         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
 380         s32 hotspot_x, hotspot_y;
 381         int ret = 0;
 382
 383
 384         hotspot_x = du->hotspot_x;
 385         hotspot_y = du->hotspot_y;
 386
 387         if (plane->state->fb) {
 388                 hotspot_x += plane->state->fb->hot_x;
 389                 hotspot_y += plane->state->fb->hot_y;
 390         }
 391
 392         du->cursor_surface = vps->surf;
 393         du->cursor_bo = vps->bo;
 394
 395         if (vps->surf) {
 396                 du->cursor_age = du->cursor_surface->snooper.age;
 397
 398                 ret = vmw_cursor_update_image(dev_priv,
 399                                               vps->surf->snooper.image,
 400                                               64, 64, hotspot_x,
 401                                               hotspot_y);
 402         } else if (vps->bo) {
 403                 ret = vmw_cursor_update_bo(dev_priv, vps->bo,
 404                                            plane->state->crtc_w,
 405                                            plane->state->crtc_h,
 406                                            hotspot_x, hotspot_y);
 407         } else {
 408                 vmw_cursor_update_position(dev_priv, false, 0, 0);
 409                 return;
 410         }
 411
 412         if (!ret) {
 413                 du->cursor_x = plane->state->crtc_x + du->set_gui_x;
 414                 du->cursor_y = plane->state->crtc_y + du->set_gui_y;
 415
 416                 vmw_cursor_update_position(dev_priv, true,
 417                                            du->cursor_x + hotspot_x,
 418                                            du->cursor_y + hotspot_y);
 419
 420                 du->core_hotspot_x = hotspot_x - du->hotspot_x;
 421                 du->core_hotspot_y = hotspot_y - du->hotspot_y;
 422         } else {
 423                 DRM_ERROR("Failed to update cursor image\n");
 424         }
 425 }
 426
 427
 428 /**
 429  * vmw_du_primary_plane_atomic_check - check if the new state is okay
 430  *
 431  * @plane: display plane
 432  * @state: info on the new plane state, including the FB
 433  *
 434  * Check if the new state is settable given the current state.  Other
 435  * than what the atomic helper checks, we care about crtc fitting
 436  * the FB and maintaining one active framebuffer.
 437  *
 438  * Returns 0 on success
 439  */
 440 int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
 441                                       struct drm_plane_state *state)
 442 {
 443         struct drm_crtc_state *crtc_state = NULL;
 444         struct drm_framebuffer *new_fb = state->fb;
 445         int ret;
 446
 447         if (state->crtc)
 448                 crtc_state = drm_atomic_get_new_crtc_state(state->state, state->crtc);
 449
 450         ret = drm_atomic_helper_check_plane_state(state, crtc_state,
 451                                                   DRM_PLANE_HELPER_NO_SCALING,
 452                                                   DRM_PLANE_HELPER_NO_SCALING,
 453                                                   false, true);
 454
 455         if (!ret && new_fb) {
 456                 struct drm_crtc *crtc = state->crtc;
 457                 struct vmw_connector_state *vcs;
 458                 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
 459                 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 460                 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
 461
 462                 vcs = vmw_connector_state_to_vcs(du->connector.state);
 463
 464                 /* Only one active implicit framebuffer at a time. */
 465                 mutex_lock(&dev_priv->global_kms_state_mutex);
 466                 if (vcs->is_implicit && dev_priv->implicit_fb &&
 467                     !(dev_priv->num_implicit == 1 && du->active_implicit)
 468                     && dev_priv->implicit_fb != vfb) {
 469                         DRM_ERROR("Multiple implicit framebuffers "
 470                                   "not supported.\n");
 471                         ret = -EINVAL;
 472                 }
 473                 mutex_unlock(&dev_priv->global_kms_state_mutex);
 474         }
 475
 476
 477         return ret;
 478 }
 479
 480
 481 /**
 482  * vmw_du_cursor_plane_atomic_check - check if the new state is okay
 483  *
 484  * @plane: cursor plane
 485  * @state: info on the new plane state
 486  *
 487  * This is a chance to fail if the new cursor state does not fit
 488  * our requirements.
 489  *
 490  * Returns 0 on success
 491  */
 492 int vmw_du_cursor_plane_atomic_check(struct drm_plane *plane,
 493                                      struct drm_plane_state *new_state)
 494 {
 495         int ret = 0;
 496         struct vmw_surface *surface = NULL;
 497         struct drm_framebuffer *fb = new_state->fb;
 498
 499         struct drm_rect src = drm_plane_state_src(new_state);
 500         struct drm_rect dest = drm_plane_state_dest(new_state);
 501
 502         /* Turning off */
 503         if (!fb)
 504                 return ret;
 505
 506         ret = drm_plane_helper_check_update(plane, new_state->crtc, fb,
 507                                             &src, &dest,
 508                                             DRM_MODE_ROTATE_0,
 509                                             DRM_PLANE_HELPER_NO_SCALING,
 510                                             DRM_PLANE_HELPER_NO_SCALING,
 511                                             true, true, &new_state->visible);
 512         if (!ret)
 513                 return ret;
 514
 515         /* A lot of the code assumes this */
 516         if (new_state->crtc_w != 64 || new_state->crtc_h != 64) {
 517                 DRM_ERROR("Invalid cursor dimensions (%d, %d)\n",
 518                           new_state->crtc_w, new_state->crtc_h);
 519                 ret = -EINVAL;
 520         }
 521
 522         if (!vmw_framebuffer_to_vfb(fb)->bo)
 523                 surface = vmw_framebuffer_to_vfbs(fb)->surface;
 524
 525         if (surface && !surface->snooper.image) {
 526                 DRM_ERROR("surface not suitable for cursor\n");
 527                 ret = -EINVAL;
 528         }
 529
 530         return ret;
 531 }
 532
 533
 534 int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
 535                              struct drm_crtc_state *new_state)
 536 {
 537         struct vmw_display_unit *du = vmw_crtc_to_du(new_state->crtc);
 538         int connector_mask = drm_connector_mask(&du->connector);
 539         bool has_primary = new_state->plane_mask &
 540                            drm_plane_mask(crtc->primary);
 541
 542         /* We always want to have an active plane with an active CRTC */
 543         if (has_primary != new_state->enable)
 544                 return -EINVAL;
 545
 546
 547         if (new_state->connector_mask != connector_mask &&
 548             new_state->connector_mask != 0) {
 549                 DRM_ERROR("Invalid connectors configuration\n");
 550                 return -EINVAL;
 551         }
 552
 553         /*
 554          * Our virtual device does not have a dot clock, so use the logical
 555          * clock value as the dot clock.
 556          */
 557         if (new_state->mode.crtc_clock == 0)
 558                 new_state->adjusted_mode.crtc_clock = new_state->mode.clock;
 559
 560         return 0;
 561 }
 562
 563
 564 void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
 565                               struct drm_crtc_state *old_crtc_state)
 566 {
 567 }
 568
 569
 570 void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
 571                               struct drm_crtc_state *old_crtc_state)
 572 {
 573         struct drm_pending_vblank_event *event = crtc->state->event;
 574
 575         if (event) {
 576                 crtc->state->event = NULL;
 577
 578                 spin_lock_irq(&crtc->dev->event_lock);
 579                 drm_crtc_send_vblank_event(crtc, event);
 580                 spin_unlock_irq(&crtc->dev->event_lock);
 581         }
 582 }
 583
 584
 585 /**
 586  * vmw_du_crtc_duplicate_state - duplicate crtc state
 587  * @crtc: DRM crtc
 588  *
 589  * Allocates and returns a copy of the crtc state (both common and
 590  * vmw-specific) for the specified crtc.
 591  *
 592  * Returns: The newly allocated crtc state, or NULL on failure.
 593  */
 594 struct drm_crtc_state *
 595 vmw_du_crtc_duplicate_state(struct drm_crtc *crtc)
 596 {
 597         struct drm_crtc_state *state;
 598         struct vmw_crtc_state *vcs;
 599
 600         if (WARN_ON(!crtc->state))
 601                 return NULL;
 602
 603         vcs = kmemdup(crtc->state, sizeof(*vcs), GFP_KERNEL);
 604
 605         if (!vcs)
 606                 return NULL;
 607
 608         state = &vcs->base;
 609
 610         __drm_atomic_helper_crtc_duplicate_state(crtc, state);
 611
 612         return state;
 613 }
 614
 615
 616 /**
 617  * vmw_du_crtc_reset - creates a blank vmw crtc state
 618  * @crtc: DRM crtc
 619  *
 620  * Resets the atomic state for @crtc by freeing the state pointer (which
 621  * might be NULL, e.g. at driver load time) and allocating a new empty state
 622  * object.
 623  */
 624 void vmw_du_crtc_reset(struct drm_crtc *crtc)
 625 {
 626         struct vmw_crtc_state *vcs;
 627
 628
 629         if (crtc->state) {
 630                 __drm_atomic_helper_crtc_destroy_state(crtc->state);
 631
 632                 kfree(vmw_crtc_state_to_vcs(crtc->state));
 633         }
 634
 635         vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
 636
 637         if (!vcs) {
 638                 DRM_ERROR("Cannot allocate vmw_crtc_state\n");
 639                 return;
 640         }
 641
 642         crtc->state = &vcs->base;
 643         crtc->state->crtc = crtc;
 644 }
 645
 646
 647 /**
 648  * vmw_du_crtc_destroy_state - destroy crtc state
 649  * @crtc: DRM crtc
 650  * @state: state object to destroy
 651  *
 652  * Destroys the crtc state (both common and vmw-specific) for the
 653  * specified plane.
 654  */
 655 void
 656 vmw_du_crtc_destroy_state(struct drm_crtc *crtc,
 657                           struct drm_crtc_state *state)
 658 {
 659         drm_atomic_helper_crtc_destroy_state(crtc, state);
 660 }
 661
 662
 663 /**
 664  * vmw_du_plane_duplicate_state - duplicate plane state
 665  * @plane: drm plane
 666  *
 667  * Allocates and returns a copy of the plane state (both common and
 668  * vmw-specific) for the specified plane.
 669  *
 670  * Returns: The newly allocated plane state, or NULL on failure.
 671  */
 672 struct drm_plane_state *
 673 vmw_du_plane_duplicate_state(struct drm_plane *plane)
 674 {
 675         struct drm_plane_state *state;
 676         struct vmw_plane_state *vps;
 677
 678         vps = kmemdup(plane->state, sizeof(*vps), GFP_KERNEL);
 679
 680         if (!vps)
 681                 return NULL;
 682
 683         vps->pinned = 0;
 684         vps->cpp = 0;
 685
 686         /* Each ref counted resource needs to be acquired again */
 687         if (vps->surf)
 688                 (void) vmw_surface_reference(vps->surf);
 689
 690         if (vps->bo)
 691                 (void) vmw_bo_reference(vps->bo);
 692
 693         state = &vps->base;
 694
 695         __drm_atomic_helper_plane_duplicate_state(plane, state);
 696
 697         return state;
 698 }
 699
 700
 701 /**
 702  * vmw_du_plane_reset - creates a blank vmw plane state
 703  * @plane: drm plane
 704  *
 705  * Resets the atomic state for @plane by freeing the state pointer (which might
 706  * be NULL, e.g. at driver load time) and allocating a new empty state object.
 707  */
 708 void vmw_du_plane_reset(struct drm_plane *plane)
 709 {
 710         struct vmw_plane_state *vps;
 711
 712
 713         if (plane->state)
 714                 vmw_du_plane_destroy_state(plane, plane->state);
 715
 716         vps = kzalloc(sizeof(*vps), GFP_KERNEL);
 717
 718         if (!vps) {
 719                 DRM_ERROR("Cannot allocate vmw_plane_state\n");
 720                 return;
 721         }
 722
 723         plane->state = &vps->base;
 724         plane->state->plane = plane;
 725         plane->state->rotation = DRM_MODE_ROTATE_0;
 726 }
 727
 728
 729 /**
 730  * vmw_du_plane_destroy_state - destroy plane state
 731  * @plane: DRM plane
 732  * @state: state object to destroy
 733  *
 734  * Destroys the plane state (both common and vmw-specific) for the
 735  * specified plane.
 736  */
 737 void
 738 vmw_du_plane_destroy_state(struct drm_plane *plane,
 739                            struct drm_plane_state *state)
 740 {
 741         struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
 742
 743
 744         /* Should have been freed by cleanup_fb */
 745         if (vps->surf)
 746                 vmw_surface_unreference(&vps->surf);
 747
 748         if (vps->bo)
 749                 vmw_bo_unreference(&vps->bo);
 750
 751         drm_atomic_helper_plane_destroy_state(plane, state);
 752 }
 753
 754
 755 /**
 756  * vmw_du_connector_duplicate_state - duplicate connector state
 757  * @connector: DRM connector
 758  *
 759  * Allocates and returns a copy of the connector state (both common and
 760  * vmw-specific) for the specified connector.
 761  *
 762  * Returns: The newly allocated connector state, or NULL on failure.
 763  */
 764 struct drm_connector_state *
 765 vmw_du_connector_duplicate_state(struct drm_connector *connector)
 766 {
 767         struct drm_connector_state *state;
 768         struct vmw_connector_state *vcs;
 769
 770         if (WARN_ON(!connector->state))
 771                 return NULL;
 772
 773         vcs = kmemdup(connector->state, sizeof(*vcs), GFP_KERNEL);
 774
 775         if (!vcs)
 776                 return NULL;
 777
 778         state = &vcs->base;
 779
 780         __drm_atomic_helper_connector_duplicate_state(connector, state);
 781
 782         return state;
 783 }
 784
 785
 786 /**
 787  * vmw_du_connector_reset - creates a blank vmw connector state
 788  * @connector: DRM connector
 789  *
 790  * Resets the atomic state for @connector by freeing the state pointer (which
 791  * might be NULL, e.g. at driver load time) and allocating a new empty state
 792  * object.
 793  */
 794 void vmw_du_connector_reset(struct drm_connector *connector)
 795 {
 796         struct vmw_connector_state *vcs;
 797
 798
 799         if (connector->state) {
 800                 __drm_atomic_helper_connector_destroy_state(connector->state);
 801
 802                 kfree(vmw_connector_state_to_vcs(connector->state));
 803         }
 804
 805         vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
 806
 807         if (!vcs) {
 808                 DRM_ERROR("Cannot allocate vmw_connector_state\n");
 809                 return;
 810         }
 811
 812         __drm_atomic_helper_connector_reset(connector, &vcs->base);
 813 }
 814
 815
 816 /**
 817  * vmw_du_connector_destroy_state - destroy connector state
 818  * @connector: DRM connector
 819  * @state: state object to destroy
 820  *
 821  * Destroys the connector state (both common and vmw-specific) for the
 822  * specified plane.
 823  */
 824 void
 825 vmw_du_connector_destroy_state(struct drm_connector *connector,
 826                           struct drm_connector_state *state)
 827 {
 828         drm_atomic_helper_connector_destroy_state(connector, state);
 829 }
 830 /*
 831  * Generic framebuffer code
 832  */
 833
 834 /*
 835  * Surface framebuffer code
 836  */
 837
 838 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 839 {
 840         struct vmw_framebuffer_surface *vfbs =
 841                 vmw_framebuffer_to_vfbs(framebuffer);
 842
 843         drm_framebuffer_cleanup(framebuffer);
 844         vmw_surface_unreference(&vfbs->surface);
 845         if (vfbs->base.user_obj)
 846                 ttm_base_object_unref(&vfbs->base.user_obj);
 847
 848         kfree(vfbs);
 849 }
 850
 851 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 852                                   struct drm_file *file_priv,
 853                                   unsigned flags, unsigned color,
 854                                   struct drm_clip_rect *clips,
 855                                   unsigned num_clips)
 856 {
 857         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 858         struct vmw_framebuffer_surface *vfbs =
 859                 vmw_framebuffer_to_vfbs(framebuffer);
 860         struct drm_clip_rect norect;
 861         int ret, inc = 1;
 862
 863         /* Legacy Display Unit does not support 3D */
 864         if (dev_priv->active_display_unit == vmw_du_legacy)
 865                 return -EINVAL;
 866
 867         drm_modeset_lock_all(dev_priv->dev);
 868
 869         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 870         if (unlikely(ret != 0)) {
 871                 drm_modeset_unlock_all(dev_priv->dev);
 872                 return ret;
 873         }
 874
 875         if (!num_clips) {
 876                 num_clips = 1;
 877                 clips = &norect;
 878                 norect.x1 = norect.y1 = 0;
 879                 norect.x2 = framebuffer->width;
 880                 norect.y2 = framebuffer->height;
 881         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 882                 num_clips /= 2;
 883                 inc = 2; /* skip source rects */
 884         }
 885
 886         if (dev_priv->active_display_unit == vmw_du_screen_object)
 887                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 888                                                    clips, NULL, NULL, 0, 0,
 889                                                    num_clips, inc, NULL, NULL);
 890         else
 891                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 892                                                  clips, NULL, NULL, 0, 0,
 893                                                  num_clips, inc, NULL, NULL);
 894
 895         vmw_fifo_flush(dev_priv, false);
 896         ttm_read_unlock(&dev_priv->reservation_sem);
 897
 898         drm_modeset_unlock_all(dev_priv->dev);
 899
 900         return 0;
 901 }
 902
 903 /**
 904  * vmw_kms_readback - Perform a readback from the screen system to
 905  * a buffer-object backed framebuffer.
 906  *
 907  * @dev_priv: Pointer to the device private structure.
 908  * @file_priv: Pointer to a struct drm_file identifying the caller.
 909  * Must be set to NULL if @user_fence_rep is NULL.
 910  * @vfb: Pointer to the buffer-object backed framebuffer.
 911  * @user_fence_rep: User-space provided structure for fence information.
 912  * Must be set to non-NULL if @file_priv is non-NULL.
 913  * @vclips: Array of clip rects.
 914  * @num_clips: Number of clip rects in @vclips.
 915  *
 916  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 917  * interrupted.
 918  */
 919 int vmw_kms_readback(struct vmw_private *dev_priv,
 920                      struct drm_file *file_priv,
 921                      struct vmw_framebuffer *vfb,
 922                      struct drm_vmw_fence_rep __user *user_fence_rep,
 923                      struct drm_vmw_rect *vclips,
 924                      uint32_t num_clips)
 925 {
 926         switch (dev_priv->active_display_unit) {
 927         case vmw_du_screen_object:
 928                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 929                                             user_fence_rep, vclips, num_clips,
 930                                             NULL);
 931         case vmw_du_screen_target:
 932                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 933                                         user_fence_rep, NULL, vclips, num_clips,
 934                                         1, false, true, NULL);
 935         default:
 936                 WARN_ONCE(true,
 937                           "Readback called with invalid display system.\n");
 938 }
 939
 940         return -ENOSYS;
 941 }
 942
 943
 944 static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 945         .destroy = vmw_framebuffer_surface_destroy,
 946         .dirty = vmw_framebuffer_surface_dirty,
 947 };
 948
 949 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 950                                            struct vmw_surface *surface,
 951                                            struct vmw_framebuffer **out,
 952                                            const struct drm_mode_fb_cmd2
 953                                            *mode_cmd,
 954                                            bool is_bo_proxy)
 955
 956 {
 957         struct drm_device *dev = dev_priv->dev;
 958         struct vmw_framebuffer_surface *vfbs;
 959         enum SVGA3dSurfaceFormat format;
 960         int ret;
 961         struct drm_format_name_buf format_name;
 962
 963         /* 3D is only supported on HWv8 and newer hosts */
 964         if (dev_priv->active_display_unit == vmw_du_legacy)
 965                 return -ENOSYS;
 966
 967         /*
 968          * Sanity checks.
 969          */
 970
 971         /* Surface must be marked as a scanout. */
 972         if (unlikely(!surface->scanout))
 973                 return -EINVAL;
 974
 975         if (unlikely(surface->mip_levels[0] != 1 ||
 976                      surface->num_sizes != 1 ||
 977                      surface->base_size.width < mode_cmd->width ||
 978                      surface->base_size.height < mode_cmd->height ||
 979                      surface->base_size.depth != 1)) {
 980                 DRM_ERROR("Incompatible surface dimensions "
 981                           "for requested mode.\n");
 982                 return -EINVAL;
 983         }
 984
 985         switch (mode_cmd->pixel_format) {
 986         case DRM_FORMAT_ARGB8888:
 987                 format = SVGA3D_A8R8G8B8;
 988                 break;
 989         case DRM_FORMAT_XRGB8888:
 990                 format = SVGA3D_X8R8G8B8;
 991                 break;
 992         case DRM_FORMAT_RGB565:
 993                 format = SVGA3D_R5G6B5;
 994                 break;
 995         case DRM_FORMAT_XRGB1555:
 996                 format = SVGA3D_A1R5G5B5;
 997                 break;
 998         default:
 999                 DRM_ERROR("Invalid pixel format: %s\n",
1000                           drm_get_format_name(mode_cmd->pixel_format, &format_name));
1001                 return -EINVAL;
1002         }
1003
1004         /*
1005          * For DX, surface format validation is done when surface->scanout
1006          * is set.
1007          */
1008         if (!dev_priv->has_dx && format != surface->format) {
1009                 DRM_ERROR("Invalid surface format for requested mode.\n");
1010                 return -EINVAL;
1011         }
1012
1013         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
1014         if (!vfbs) {
1015                 ret = -ENOMEM;
1016                 goto out_err1;
1017         }
1018
1019         drm_helper_mode_fill_fb_struct(dev, &vfbs->base.base, mode_cmd);
1020         vfbs->surface = vmw_surface_reference(surface);
1021         vfbs->base.user_handle = mode_cmd->handles[0];
1022         vfbs->is_bo_proxy = is_bo_proxy;
1023
1024         *out = &vfbs->base;
1025
1026         ret = drm_framebuffer_init(dev, &vfbs->base.base,
1027                                    &vmw_framebuffer_surface_funcs);
1028         if (ret)
1029                 goto out_err2;
1030
1031         return 0;
1032
1033 out_err2:
1034         vmw_surface_unreference(&surface);
1035         kfree(vfbs);
1036 out_err1:
1037         return ret;
1038 }
1039
1040 /*
1041  * Buffer-object framebuffer code
1042  */
1043
1044 static void vmw_framebuffer_bo_destroy(struct drm_framebuffer *framebuffer)
1045 {
1046         struct vmw_framebuffer_bo *vfbd =
1047                 vmw_framebuffer_to_vfbd(framebuffer);
1048
1049         drm_framebuffer_cleanup(framebuffer);
1050         vmw_bo_unreference(&vfbd->buffer);
1051         if (vfbd->base.user_obj)
1052                 ttm_base_object_unref(&vfbd->base.user_obj);
1053
1054         kfree(vfbd);
1055 }
1056
1057 static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
1058                                     struct drm_file *file_priv,
1059                                     unsigned int flags, unsigned int color,
1060                                     struct drm_clip_rect *clips,
1061                                     unsigned int num_clips)
1062 {
1063         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1064         struct vmw_framebuffer_bo *vfbd =
1065                 vmw_framebuffer_to_vfbd(framebuffer);
1066         struct drm_clip_rect norect;
1067         int ret, increment = 1;
1068
1069         drm_modeset_lock_all(dev_priv->dev);
1070
1071         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1072         if (unlikely(ret != 0)) {
1073                 drm_modeset_unlock_all(dev_priv->dev);
1074                 return ret;
1075         }
1076
1077         if (!num_clips) {
1078                 num_clips = 1;
1079                 clips = &norect;
1080                 norect.x1 = norect.y1 = 0;
1081                 norect.x2 = framebuffer->width;
1082                 norect.y2 = framebuffer->height;
1083         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
1084                 num_clips /= 2;
1085                 increment = 2;
1086         }
1087
1088         switch (dev_priv->active_display_unit) {
1089         case vmw_du_screen_target:
1090                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
1091                                        clips, NULL, num_clips, increment,
1092                                        true, true, NULL);
1093                 break;
1094         case vmw_du_screen_object:
1095                 ret = vmw_kms_sou_do_bo_dirty(dev_priv, &vfbd->base,
1096                                               clips, NULL, num_clips,
1097                                               increment, true, NULL, NULL);
1098                 break;
1099         case vmw_du_legacy:
1100                 ret = vmw_kms_ldu_do_bo_dirty(dev_priv, &vfbd->base, 0, 0,
1101                                               clips, num_clips, increment);
1102                 break;
1103         default:
1104                 ret = -EINVAL;
1105                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
1106                 break;
1107         }
1108
1109         vmw_fifo_flush(dev_priv, false);
1110         ttm_read_unlock(&dev_priv->reservation_sem);
1111
1112         drm_modeset_unlock_all(dev_priv->dev);
1113
1114         return ret;
1115 }
1116
1117 static const struct drm_framebuffer_funcs vmw_framebuffer_bo_funcs = {
1118         .destroy = vmw_framebuffer_bo_destroy,
1119         .dirty = vmw_framebuffer_bo_dirty,
1120 };
1121
1122 /**
1123  * Pin the bofer in a location suitable for access by the
1124  * display system.
1125  */
1126 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
1127 {
1128         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1129         struct vmw_buffer_object *buf;
1130         struct ttm_placement *placement;
1131         int ret;
1132
1133         buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1134                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1135
1136         if (!buf)
1137                 return 0;
1138
1139         switch (dev_priv->active_display_unit) {
1140         case vmw_du_legacy:
1141                 vmw_overlay_pause_all(dev_priv);
1142                 ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false);
1143                 vmw_overlay_resume_all(dev_priv);
1144                 break;
1145         case vmw_du_screen_object:
1146         case vmw_du_screen_target:
1147                 if (vfb->bo) {
1148                         if (dev_priv->capabilities & SVGA_CAP_3D) {
1149                                 /*
1150                                  * Use surface DMA to get content to
1151                                  * sreen target surface.
1152                                  */
1153                                 placement = &vmw_vram_gmr_placement;
1154                         } else {
1155                                 /* Use CPU blit. */
1156                                 placement = &vmw_sys_placement;
1157                         }
1158                 } else {
1159                         /* Use surface / image update */
1160                         placement = &vmw_mob_placement;
1161                 }
1162
1163                 return vmw_bo_pin_in_placement(dev_priv, buf, placement, false);
1164         default:
1165                 return -EINVAL;
1166         }
1167
1168         return ret;
1169 }
1170
1171 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
1172 {
1173         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1174         struct vmw_buffer_object *buf;
1175
1176         buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1177                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1178
1179         if (WARN_ON(!buf))
1180                 return 0;
1181
1182         return vmw_bo_unpin(dev_priv, buf, false);
1183 }
1184
1185 /**
1186  * vmw_create_bo_proxy - create a proxy surface for the buffer object
1187  *
1188  * @dev: DRM device
1189  * @mode_cmd: parameters for the new surface
1190  * @bo_mob: MOB backing the buffer object
1191  * @srf_out: newly created surface
1192  *
1193  * When the content FB is a buffer object, we create a surface as a proxy to the
1194  * same buffer.  This way we can do a surface copy rather than a surface DMA.
1195  * This is a more efficient approach
1196  *
1197  * RETURNS:
1198  * 0 on success, error code otherwise
1199  */
1200 static int vmw_create_bo_proxy(struct drm_device *dev,
1201                                const struct drm_mode_fb_cmd2 *mode_cmd,
1202                                struct vmw_buffer_object *bo_mob,
1203                                struct vmw_surface **srf_out)
1204 {
1205         uint32_t format;
1206         struct drm_vmw_size content_base_size = {0};
1207         struct vmw_resource *res;
1208         unsigned int bytes_pp;
1209         struct drm_format_name_buf format_name;
1210         int ret;
1211
1212         switch (mode_cmd->pixel_format) {
1213         case DRM_FORMAT_ARGB8888:
1214         case DRM_FORMAT_XRGB8888:
1215                 format = SVGA3D_X8R8G8B8;
1216                 bytes_pp = 4;
1217                 break;
1218
1219         case DRM_FORMAT_RGB565:
1220         case DRM_FORMAT_XRGB1555:
1221                 format = SVGA3D_R5G6B5;
1222                 bytes_pp = 2;
1223                 break;
1224
1225         case 8:
1226                 format = SVGA3D_P8;
1227                 bytes_pp = 1;
1228                 break;
1229
1230         default:
1231                 DRM_ERROR("Invalid framebuffer format %s\n",
1232                           drm_get_format_name(mode_cmd->pixel_format, &format_name));
1233                 return -EINVAL;
1234         }
1235
1236         content_base_size.width  = mode_cmd->pitches[0] / bytes_pp;
1237         content_base_size.height = mode_cmd->height;
1238         content_base_size.depth  = 1;
1239
1240         ret = vmw_surface_gb_priv_define(dev,
1241                                          0, /* kernel visible only */
1242                                          0, /* flags */
1243                                          format,
1244                                          true, /* can be a scanout buffer */
1245                                          1, /* num of mip levels */
1246                                          0,
1247                                          0,
1248                                          content_base_size,
1249                                          SVGA3D_MS_PATTERN_NONE,
1250                                          SVGA3D_MS_QUALITY_NONE,
1251                                          srf_out);
1252         if (ret) {
1253                 DRM_ERROR("Failed to allocate proxy content buffer\n");
1254                 return ret;
1255         }
1256
1257         res = &(*srf_out)->res;
1258
1259         /* Reserve and switch the backing mob. */
1260         mutex_lock(&res->dev_priv->cmdbuf_mutex);
1261         (void) vmw_resource_reserve(res, false, true);
1262         vmw_bo_unreference(&res->backup);
1263         res->backup = vmw_bo_reference(bo_mob);
1264         res->backup_offset = 0;
1265         vmw_resource_unreserve(res, false, NULL, 0);
1266         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1267
1268         return 0;
1269 }
1270
1271
1272
1273 static int vmw_kms_new_framebuffer_bo(struct vmw_private *dev_priv,
1274                                       struct vmw_buffer_object *bo,
1275                                       struct vmw_framebuffer **out,
1276                                       const struct drm_mode_fb_cmd2
1277                                       *mode_cmd)
1278
1279 {
1280         struct drm_device *dev = dev_priv->dev;
1281         struct vmw_framebuffer_bo *vfbd;
1282         unsigned int requested_size;
1283         struct drm_format_name_buf format_name;
1284         int ret;
1285
1286         requested_size = mode_cmd->height * mode_cmd->pitches[0];
1287         if (unlikely(requested_size > bo->base.num_pages * PAGE_SIZE)) {
1288                 DRM_ERROR("Screen buffer object size is too small "
1289                           "for requested mode.\n");
1290                 return -EINVAL;
1291         }
1292
1293         /* Limited framebuffer color depth support for screen objects */
1294         if (dev_priv->active_display_unit == vmw_du_screen_object) {
1295                 switch (mode_cmd->pixel_format) {
1296                 case DRM_FORMAT_XRGB8888:
1297                 case DRM_FORMAT_ARGB8888:
1298                         break;
1299                 case DRM_FORMAT_XRGB1555:
1300                 case DRM_FORMAT_RGB565:
1301                         break;
1302                 default:
1303                         DRM_ERROR("Invalid pixel format: %s\n",
1304                                   drm_get_format_name(mode_cmd->pixel_format, &format_name));
1305                         return -EINVAL;
1306                 }
1307         }
1308
1309         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
1310         if (!vfbd) {
1311                 ret = -ENOMEM;
1312                 goto out_err1;
1313         }
1314
1315         drm_helper_mode_fill_fb_struct(dev, &vfbd->base.base, mode_cmd);
1316         vfbd->base.bo = true;
1317         vfbd->buffer = vmw_bo_reference(bo);
1318         vfbd->base.user_handle = mode_cmd->handles[0];
1319         *out = &vfbd->base;
1320
1321         ret = drm_framebuffer_init(dev, &vfbd->base.base,
1322                                    &vmw_framebuffer_bo_funcs);
1323         if (ret)
1324                 goto out_err2;
1325
1326         return 0;
1327
1328 out_err2:
1329         vmw_bo_unreference(&bo);
1330         kfree(vfbd);
1331 out_err1:
1332         return ret;
1333 }
1334
1335
1336 /**
1337  * vmw_kms_srf_ok - check if a surface can be created
1338  *
1339  * @width: requested width
1340  * @height: requested height
1341  *
1342  * Surfaces need to be less than texture size
1343  */
1344 static bool
1345 vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
1346 {
1347         if (width  > dev_priv->texture_max_width ||
1348             height > dev_priv->texture_max_height)
1349                 return false;
1350
1351         return true;
1352 }
1353
1354 /**
1355  * vmw_kms_new_framebuffer - Create a new framebuffer.
1356  *
1357  * @dev_priv: Pointer to device private struct.
1358  * @bo: Pointer to buffer object to wrap the kms framebuffer around.
1359  * Either @bo or @surface must be NULL.
1360  * @surface: Pointer to a surface to wrap the kms framebuffer around.
1361  * Either @bo or @surface must be NULL.
1362  * @only_2d: No presents will occur to this buffer object based framebuffer.
1363  * This helps the code to do some important optimizations.
1364  * @mode_cmd: Frame-buffer metadata.
1365  */
1366 struct vmw_framebuffer *
1367 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
1368                         struct vmw_buffer_object *bo,
1369                         struct vmw_surface *surface,
1370                         bool only_2d,
1371                         const struct drm_mode_fb_cmd2 *mode_cmd)
1372 {
1373         struct vmw_framebuffer *vfb = NULL;
1374         bool is_bo_proxy = false;
1375         int ret;
1376
1377         /*
1378          * We cannot use the SurfaceDMA command in an non-accelerated VM,
1379          * therefore, wrap the buffer object in a surface so we can use the
1380          * SurfaceCopy command.
1381          */
1382         if (vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)  &&
1383             bo && only_2d &&
1384             mode_cmd->width > 64 &&  /* Don't create a proxy for cursor */
1385             dev_priv->active_display_unit == vmw_du_screen_target) {
1386                 ret = vmw_create_bo_proxy(dev_priv->dev, mode_cmd,
1387                                           bo, &surface);
1388                 if (ret)
1389                         return ERR_PTR(ret);
1390
1391                 is_bo_proxy = true;
1392         }
1393
1394         /* Create the new framebuffer depending one what we have */
1395         if (surface) {
1396                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
1397                                                       mode_cmd,
1398                                                       is_bo_proxy);
1399
1400                 /*
1401                  * vmw_create_bo_proxy() adds a reference that is no longer
1402                  * needed
1403                  */
1404                 if (is_bo_proxy)
1405                         vmw_surface_unreference(&surface);
1406         } else if (bo) {
1407                 ret = vmw_kms_new_framebuffer_bo(dev_priv, bo, &vfb,
1408                                                  mode_cmd);
1409         } else {
1410                 BUG();
1411         }
1412
1413         if (ret)
1414                 return ERR_PTR(ret);
1415
1416         vfb->pin = vmw_framebuffer_pin;
1417         vfb->unpin = vmw_framebuffer_unpin;
1418
1419         return vfb;
1420 }
1421
1422 /*
1423  * Generic Kernel modesetting functions
1424  */
1425
1426 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
1427                                                  struct drm_file *file_priv,
1428                                                  const struct drm_mode_fb_cmd2 *mode_cmd)
1429 {
1430         struct vmw_private *dev_priv = vmw_priv(dev);
1431         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1432         struct vmw_framebuffer *vfb = NULL;
1433         struct vmw_surface *surface = NULL;
1434         struct vmw_buffer_object *bo = NULL;
1435         struct ttm_base_object *user_obj;
1436         int ret;
1437
1438         /*
1439          * Take a reference on the user object of the resource
1440          * backing the kms fb. This ensures that user-space handle
1441          * lookups on that resource will always work as long as
1442          * it's registered with a kms framebuffer. This is important,
1443          * since vmw_execbuf_process identifies resources in the
1444          * command stream using user-space handles.
1445          */
1446
1447         user_obj = ttm_base_object_lookup(tfile, mode_cmd->handles[0]);
1448         if (unlikely(user_obj == NULL)) {
1449                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1450                 return ERR_PTR(-ENOENT);
1451         }
1452
1453         /**
1454          * End conditioned code.
1455          */
1456
1457         /* returns either a bo or surface */
1458         ret = vmw_user_lookup_handle(dev_priv, tfile,
1459                                      mode_cmd->handles[0],
1460                                      &surface, &bo);
1461         if (ret)
1462                 goto err_out;
1463
1464
1465         if (!bo &&
1466             !vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
1467                 DRM_ERROR("Surface size cannot exceed %dx%d",
1468                         dev_priv->texture_max_width,
1469                         dev_priv->texture_max_height);
1470                 goto err_out;
1471         }
1472
1473
1474         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1475                                       !(dev_priv->capabilities & SVGA_CAP_3D),
1476                                       mode_cmd);
1477         if (IS_ERR(vfb)) {
1478                 ret = PTR_ERR(vfb);
1479                 goto err_out;
1480         }
1481
1482 err_out:
1483         /* vmw_user_lookup_handle takes one ref so does new_fb */
1484         if (bo)
1485                 vmw_bo_unreference(&bo);
1486         if (surface)
1487                 vmw_surface_unreference(&surface);
1488
1489         if (ret) {
1490                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1491                 ttm_base_object_unref(&user_obj);
1492                 return ERR_PTR(ret);
1493         } else
1494                 vfb->user_obj = user_obj;
1495
1496         return &vfb->base;
1497 }
1498
1499 /**
1500  * vmw_kms_check_display_memory - Validates display memory required for a
1501  * topology
1502  * @dev: DRM device
1503  * @num_rects: number of drm_rect in rects
1504  * @rects: array of drm_rect representing the topology to validate indexed by
1505  * crtc index.
1506  *
1507  * Returns:
1508  * 0 on success otherwise negative error code
1509  */
1510 static int vmw_kms_check_display_memory(struct drm_device *dev,
1511                                         uint32_t num_rects,
1512                                         struct drm_rect *rects)
1513 {
1514         struct vmw_private *dev_priv = vmw_priv(dev);
1515         struct drm_rect bounding_box = {0};
1516         u64 total_pixels = 0, pixel_mem, bb_mem;
1517         int i;
1518
1519         for (i = 0; i < num_rects; i++) {
1520                 /*
1521                  * For STDU only individual screen (screen target) is limited by
1522                  * SCREENTARGET_MAX_WIDTH/HEIGHT registers.
1523                  */
1524                 if (dev_priv->active_display_unit == vmw_du_screen_target &&
1525                     (drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
1526                      drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
1527                         DRM_ERROR("Screen size not supported.\n");
1528                         return -EINVAL;
1529                 }
1530
1531                 /* Bounding box upper left is at (0,0). */
1532                 if (rects[i].x2 > bounding_box.x2)
1533                         bounding_box.x2 = rects[i].x2;
1534
1535                 if (rects[i].y2 > bounding_box.y2)
1536                         bounding_box.y2 = rects[i].y2;
1537
1538                 total_pixels += (u64) drm_rect_width(&rects[i]) *
1539                         (u64) drm_rect_height(&rects[i]);
1540         }
1541
1542         /* Virtual svga device primary limits are always in 32-bpp. */
1543         pixel_mem = total_pixels * 4;
1544
1545         /*
1546          * For HV10 and below prim_bb_mem is vram size. When
1547          * SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM is not present vram size is
1548          * limit on primary bounding box
1549          */
1550         if (pixel_mem > dev_priv->prim_bb_mem) {
1551                 DRM_ERROR("Combined output size too large.\n");
1552                 return -EINVAL;
1553         }
1554
1555         /* SVGA_CAP_NO_BB_RESTRICTION is available for STDU only. */
1556         if (dev_priv->active_display_unit != vmw_du_screen_target ||
1557             !(dev_priv->capabilities & SVGA_CAP_NO_BB_RESTRICTION)) {
1558                 bb_mem = (u64) bounding_box.x2 * bounding_box.y2 * 4;
1559
1560                 if (bb_mem > dev_priv->prim_bb_mem) {
1561                         DRM_ERROR("Topology is beyond supported limits.\n");
1562                         return -EINVAL;
1563                 }
1564         }
1565
1566         return 0;
1567 }
1568
1569 /**
1570  * vmw_kms_check_topology - Validates topology in drm_atomic_state
1571  * @dev: DRM device
1572  * @state: the driver state object
1573  *
1574  * Returns:
1575  * 0 on success otherwise negative error code
1576  */
1577 static int vmw_kms_check_topology(struct drm_device *dev,
1578                                   struct drm_atomic_state *state)
1579 {
1580         struct vmw_private *dev_priv = vmw_priv(dev);
1581         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
1582         struct drm_rect *rects;
1583         struct drm_crtc *crtc;
1584         uint32_t i;
1585         int ret = 0;
1586
1587         rects = kcalloc(dev->mode_config.num_crtc, sizeof(struct drm_rect),
1588                         GFP_KERNEL);
1589         if (!rects)
1590                 return -ENOMEM;
1591
1592         mutex_lock(&dev_priv->requested_layout_mutex);
1593
1594         drm_for_each_crtc(crtc, dev) {
1595                 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1596                 struct drm_crtc_state *crtc_state = crtc->state;
1597
1598                 i = drm_crtc_index(crtc);
1599
1600                 if (crtc_state && crtc_state->enable) {
1601                         rects[i].x1 = du->gui_x;
1602                         rects[i].y1 = du->gui_y;
1603                         rects[i].x2 = du->gui_x + crtc_state->mode.hdisplay;
1604                         rects[i].y2 = du->gui_y + crtc_state->mode.vdisplay;
1605                 }
1606         }
1607
1608         /* Determine change to topology due to new atomic state */
1609         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
1610                                       new_crtc_state, i) {
1611                 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1612                 struct drm_connector *connector;
1613                 struct drm_connector_state *conn_state;
1614                 struct vmw_connector_state *vmw_conn_state;
1615
1616                 if (!new_crtc_state->enable) {
1617                         rects[i].x1 = 0;
1618                         rects[i].y1 = 0;
1619                         rects[i].x2 = 0;
1620                         rects[i].y2 = 0;
1621                         continue;
1622                 }
1623
1624                 if (!du->pref_active) {
1625                         ret = -EINVAL;
1626                         goto clean;
1627                 }
1628
1629                 /*
1630                  * For vmwgfx each crtc has only one connector attached and it
1631                  * is not changed so don't really need to check the
1632                  * crtc->connector_mask and iterate over it.
1633                  */
1634                 connector = &du->connector;
1635                 conn_state = drm_atomic_get_connector_state(state, connector);
1636                 if (IS_ERR(conn_state)) {
1637                         ret = PTR_ERR(conn_state);
1638                         goto clean;
1639                 }
1640
1641                 vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
1642                 vmw_conn_state->gui_x = du->gui_x;
1643                 vmw_conn_state->gui_y = du->gui_y;
1644
1645                 rects[i].x1 = du->gui_x;
1646                 rects[i].y1 = du->gui_y;
1647                 rects[i].x2 = du->gui_x + new_crtc_state->mode.hdisplay;
1648                 rects[i].y2 = du->gui_y + new_crtc_state->mode.vdisplay;
1649         }
1650
1651         ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,
1652                                            rects);
1653
1654 clean:
1655         mutex_unlock(&dev_priv->requested_layout_mutex);
1656         kfree(rects);
1657         return ret;
1658 }
1659
1660 /**
1661  * vmw_kms_atomic_check_modeset- validate state object for modeset changes
1662  *
1663  * @dev: DRM device
1664  * @state: the driver state object
1665  *
1666  * This is a simple wrapper around drm_atomic_helper_check_modeset() for
1667  * us to assign a value to mode->crtc_clock so that
1668  * drm_calc_timestamping_constants() won't throw an error message
1669  *
1670  * Returns:
1671  * Zero for success or -errno
1672  */
1673 static int
1674 vmw_kms_atomic_check_modeset(struct drm_device *dev,
1675                              struct drm_atomic_state *state)
1676 {
1677         struct drm_crtc *crtc;
1678         struct drm_crtc_state *crtc_state;
1679         bool need_modeset = false;
1680         int i, ret;
1681
1682         ret = drm_atomic_helper_check(dev, state);
1683         if (ret)
1684                 return ret;
1685
1686         if (!state->allow_modeset)
1687                 return ret;
1688
1689         /*
1690          * Legacy path do not set allow_modeset properly like
1691          * @drm_atomic_helper_update_plane, This will result in unnecessary call
1692          * to vmw_kms_check_topology. So extra set of check.
1693          */
1694         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1695                 if (drm_atomic_crtc_needs_modeset(crtc_state))
1696                         need_modeset = true;
1697         }
1698
1699         if (need_modeset)
1700                 return vmw_kms_check_topology(dev, state);
1701
1702         return ret;
1703 }
1704
1705 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1706         .fb_create = vmw_kms_fb_create,
1707         .atomic_check = vmw_kms_atomic_check_modeset,
1708         .atomic_commit = drm_atomic_helper_commit,
1709 };
1710
1711 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1712                                    struct drm_file *file_priv,
1713                                    struct vmw_framebuffer *vfb,
1714                                    struct vmw_surface *surface,
1715                                    uint32_t sid,
1716                                    int32_t destX, int32_t destY,
1717                                    struct drm_vmw_rect *clips,
1718                                    uint32_t num_clips)
1719 {
1720         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1721                                             &surface->res, destX, destY,
1722                                             num_clips, 1, NULL, NULL);
1723 }
1724
1725
1726 int vmw_kms_present(struct vmw_private *dev_priv,
1727                     struct drm_file *file_priv,
1728                     struct vmw_framebuffer *vfb,
1729                     struct vmw_surface *surface,
1730                     uint32_t sid,
1731                     int32_t destX, int32_t destY,
1732                     struct drm_vmw_rect *clips,
1733                     uint32_t num_clips)
1734 {
1735         int ret;
1736
1737         switch (dev_priv->active_display_unit) {
1738         case vmw_du_screen_target:
1739                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1740                                                  &surface->res, destX, destY,
1741                                                  num_clips, 1, NULL, NULL);
1742                 break;
1743         case vmw_du_screen_object:
1744                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1745                                               sid, destX, destY, clips,
1746                                               num_clips);
1747                 break;
1748         default:
1749                 WARN_ONCE(true,
1750                           "Present called with invalid display system.\n");
1751                 ret = -ENOSYS;
1752                 break;
1753         }
1754         if (ret)
1755                 return ret;
1756
1757         vmw_fifo_flush(dev_priv, false);
1758
1759         return 0;
1760 }
1761
1762 static void
1763 vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
1764 {
1765         if (dev_priv->hotplug_mode_update_property)
1766                 return;
1767
1768         dev_priv->hotplug_mode_update_property =
1769                 drm_property_create_range(dev_priv->dev,
1770                                           DRM_MODE_PROP_IMMUTABLE,
1771                                           "hotplug_mode_update", 0, 1);
1772
1773         if (!dev_priv->hotplug_mode_update_property)
1774                 return;
1775
1776 }
1777
1778 int vmw_kms_init(struct vmw_private *dev_priv)
1779 {
1780         struct drm_device *dev = dev_priv->dev;
1781         int ret;
1782
1783         drm_mode_config_init(dev);
1784         dev->mode_config.funcs = &vmw_kms_funcs;
1785         dev->mode_config.min_width = 1;
1786         dev->mode_config.min_height = 1;
1787         dev->mode_config.max_width = dev_priv->texture_max_width;
1788         dev->mode_config.max_height = dev_priv->texture_max_height;
1789
1790         drm_mode_create_suggested_offset_properties(dev);
1791         vmw_kms_create_hotplug_mode_update_property(dev_priv);
1792
1793         ret = vmw_kms_stdu_init_display(dev_priv);
1794         if (ret) {
1795                 ret = vmw_kms_sou_init_display(dev_priv);
1796                 if (ret) /* Fallback */
1797                         ret = vmw_kms_ldu_init_display(dev_priv);
1798         }
1799
1800         return ret;
1801 }
1802
1803 int vmw_kms_close(struct vmw_private *dev_priv)
1804 {
1805         int ret = 0;
1806
1807         /*
1808          * Docs says we should take the lock before calling this function
1809          * but since it destroys encoders and our destructor calls
1810          * drm_encoder_cleanup which takes the lock we deadlock.
1811          */
1812         drm_mode_config_cleanup(dev_priv->dev);
1813         if (dev_priv->active_display_unit == vmw_du_legacy)
1814                 ret = vmw_kms_ldu_close_display(dev_priv);
1815
1816         return ret;
1817 }
1818
1819 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1820                                 struct drm_file *file_priv)
1821 {
1822         struct drm_vmw_cursor_bypass_arg *arg = data;
1823         struct vmw_display_unit *du;
1824         struct drm_crtc *crtc;
1825         int ret = 0;
1826
1827
1828         mutex_lock(&dev->mode_config.mutex);
1829         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1830
1831                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1832                         du = vmw_crtc_to_du(crtc);
1833                         du->hotspot_x = arg->xhot;
1834                         du->hotspot_y = arg->yhot;
1835                 }
1836
1837                 mutex_unlock(&dev->mode_config.mutex);
1838                 return 0;
1839         }
1840
1841         crtc = drm_crtc_find(dev, file_priv, arg->crtc_id);
1842         if (!crtc) {
1843                 ret = -ENOENT;
1844                 goto out;
1845         }
1846
1847         du = vmw_crtc_to_du(crtc);
1848
1849         du->hotspot_x = arg->xhot;
1850         du->hotspot_y = arg->yhot;
1851
1852 out:
1853         mutex_unlock(&dev->mode_config.mutex);
1854
1855         return ret;
1856 }
1857
1858 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1859                         unsigned width, unsigned height, unsigned pitch,
1860                         unsigned bpp, unsigned depth)
1861 {
1862         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1863                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1864         else if (vmw_fifo_have_pitchlock(vmw_priv))
1865                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1866                                SVGA_FIFO_PITCHLOCK);
1867         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1868         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1869         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1870
1871         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1872                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1873                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1874                 return -EINVAL;
1875         }
1876
1877         return 0;
1878 }
1879
1880 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1881 {
1882         struct vmw_vga_topology_state *save;
1883         uint32_t i;
1884
1885         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1886         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1887         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1888         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1889                 vmw_priv->vga_pitchlock =
1890                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1891         else if (vmw_fifo_have_pitchlock(vmw_priv))
1892                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1893                                                         SVGA_FIFO_PITCHLOCK);
1894
1895         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1896                 return 0;
1897
1898         vmw_priv->num_displays = vmw_read(vmw_priv,
1899                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1900
1901         if (vmw_priv->num_displays == 0)
1902                 vmw_priv->num_displays = 1;
1903
1904         for (i = 0; i < vmw_priv->num_displays; ++i) {
1905                 save = &vmw_priv->vga_save[i];
1906                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1907                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1908                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1909                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1910                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1911                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1912                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1913                 if (i == 0 && vmw_priv->num_displays == 1 &&
1914                     save->width == 0 && save->height == 0) {
1915
1916                         /*
1917                          * It should be fairly safe to assume that these
1918                          * values are uninitialized.
1919                          */
1920
1921                         save->width = vmw_priv->vga_width - save->pos_x;
1922                         save->height = vmw_priv->vga_height - save->pos_y;
1923                 }
1924         }
1925
1926         return 0;
1927 }
1928
1929 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1930 {
1931         struct vmw_vga_topology_state *save;
1932         uint32_t i;
1933
1934         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1935         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1936         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1937         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1938                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1939                           vmw_priv->vga_pitchlock);
1940         else if (vmw_fifo_have_pitchlock(vmw_priv))
1941                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1942                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1943
1944         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1945                 return 0;
1946
1947         for (i = 0; i < vmw_priv->num_displays; ++i) {
1948                 save = &vmw_priv->vga_save[i];
1949                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1950                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1951                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1952                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1953                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1954                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1955                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1956         }
1957
1958         return 0;
1959 }
1960
1961 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1962                                 uint32_t pitch,
1963                                 uint32_t height)
1964 {
1965         return ((u64) pitch * (u64) height) < (u64)
1966                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1967                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1968 }
1969
1970
1971 /**
1972  * Function called by DRM code called with vbl_lock held.
1973  */
1974 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1975 {
1976         return 0;
1977 }
1978
1979 /**
1980  * Function called by DRM code called with vbl_lock held.
1981  */
1982 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1983 {
1984         return -EINVAL;
1985 }
1986
1987 /**
1988  * Function called by DRM code called with vbl_lock held.
1989  */
1990 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1991 {
1992 }
1993
1994 /**
1995  * vmw_du_update_layout - Update the display unit with topology from resolution
1996  * plugin and generate DRM uevent
1997  * @dev_priv: device private
1998  * @num_rects: number of drm_rect in rects
1999  * @rects: toplogy to update
2000  */
2001 static int vmw_du_update_layout(struct vmw_private *dev_priv,
2002                                 unsigned int num_rects, struct drm_rect *rects)
2003 {
2004         struct drm_device *dev = dev_priv->dev;
2005         struct vmw_display_unit *du;
2006         struct drm_connector *con;
2007         struct drm_connector_list_iter conn_iter;
2008
2009         /*
2010          * Currently only gui_x/y is protected with requested_layout_mutex.
2011          */
2012         mutex_lock(&dev_priv->requested_layout_mutex);
2013         drm_connector_list_iter_begin(dev, &conn_iter);
2014         drm_for_each_connector_iter(con, &conn_iter) {
2015                 du = vmw_connector_to_du(con);
2016                 if (num_rects > du->unit) {
2017                         du->pref_width = drm_rect_width(&rects[du->unit]);
2018                         du->pref_height = drm_rect_height(&rects[du->unit]);
2019                         du->pref_active = true;
2020                         du->gui_x = rects[du->unit].x1;
2021                         du->gui_y = rects[du->unit].y1;
2022                 } else {
2023                         du->pref_width = 800;
2024                         du->pref_height = 600;
2025                         du->pref_active = false;
2026                         du->gui_x = 0;
2027                         du->gui_y = 0;
2028                 }
2029         }
2030         drm_connector_list_iter_end(&conn_iter);
2031         mutex_unlock(&dev_priv->requested_layout_mutex);
2032
2033         mutex_lock(&dev->mode_config.mutex);
2034         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
2035                 du = vmw_connector_to_du(con);
2036                 if (num_rects > du->unit) {
2037                         drm_object_property_set_value
2038                           (&con->base, dev->mode_config.suggested_x_property,
2039                            du->gui_x);
2040                         drm_object_property_set_value
2041                           (&con->base, dev->mode_config.suggested_y_property,
2042                            du->gui_y);
2043                 } else {
2044                         drm_object_property_set_value
2045                           (&con->base, dev->mode_config.suggested_x_property,
2046                            0);
2047                         drm_object_property_set_value
2048                           (&con->base, dev->mode_config.suggested_y_property,
2049                            0);
2050                 }
2051                 con->status = vmw_du_connector_detect(con, true);
2052         }
2053         mutex_unlock(&dev->mode_config.mutex);
2054
2055         drm_sysfs_hotplug_event(dev);
2056
2057         return 0;
2058 }
2059
2060 int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
2061                           u16 *r, u16 *g, u16 *b,
2062                           uint32_t size,
2063                           struct drm_modeset_acquire_ctx *ctx)
2064 {
2065         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
2066         int i;
2067
2068         for (i = 0; i < size; i++) {
2069                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
2070                           r[i], g[i], b[i]);
2071                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
2072                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
2073                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
2074         }
2075
2076         return 0;
2077 }
2078
2079 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
2080 {
2081         return 0;
2082 }
2083
2084 enum drm_connector_status
2085 vmw_du_connector_detect(struct drm_connector *connector, bool force)
2086 {
2087         uint32_t num_displays;
2088         struct drm_device *dev = connector->dev;
2089         struct vmw_private *dev_priv = vmw_priv(dev);
2090         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2091
2092         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
2093
2094         return ((vmw_connector_to_du(connector)->unit < num_displays &&
2095                  du->pref_active) ?
2096                 connector_status_connected : connector_status_disconnected);
2097 }
2098
2099 static struct drm_display_mode vmw_kms_connector_builtin[] = {
2100         /* 640x480@60Hz */
2101         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
2102                    752, 800, 0, 480, 489, 492, 525, 0,
2103                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2104         /* 800x600@60Hz */
2105         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
2106                    968, 1056, 0, 600, 601, 605, 628, 0,
2107                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2108         /* 1024x768@60Hz */
2109         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
2110                    1184, 1344, 0, 768, 771, 777, 806, 0,
2111                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2112         /* 1152x864@75Hz */
2113         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
2114                    1344, 1600, 0, 864, 865, 868, 900, 0,
2115                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2116         /* 1280x768@60Hz */
2117         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
2118                    1472, 1664, 0, 768, 771, 778, 798, 0,
2119                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2120         /* 1280x800@60Hz */
2121         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
2122                    1480, 1680, 0, 800, 803, 809, 831, 0,
2123                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2124         /* 1280x960@60Hz */
2125         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
2126                    1488, 1800, 0, 960, 961, 964, 1000, 0,
2127                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2128         /* 1280x1024@60Hz */
2129         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
2130                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
2131                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2132         /* 1360x768@60Hz */
2133         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
2134                    1536, 1792, 0, 768, 771, 777, 795, 0,
2135                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2136         /* 1440x1050@60Hz */
2137         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
2138                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
2139                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2140         /* 1440x900@60Hz */
2141         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
2142                    1672, 1904, 0, 900, 903, 909, 934, 0,
2143                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2144         /* 1600x1200@60Hz */
2145         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
2146                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
2147                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2148         /* 1680x1050@60Hz */
2149         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
2150                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
2151                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2152         /* 1792x1344@60Hz */
2153         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2154                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
2155                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2156         /* 1853x1392@60Hz */
2157         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2158                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
2159                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2160         /* 1920x1200@60Hz */
2161         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2162                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
2163                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2164         /* 1920x1440@60Hz */
2165         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2166                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
2167                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2168         /* 2560x1600@60Hz */
2169         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
2170                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
2171                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2172         /* Terminate */
2173         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
2174 };
2175
2176 /**
2177  * vmw_guess_mode_timing - Provide fake timings for a
2178  * 60Hz vrefresh mode.
2179  *
2180  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
2181  * members filled in.
2182  */
2183 void vmw_guess_mode_timing(struct drm_display_mode *mode)
2184 {
2185         mode->hsync_start = mode->hdisplay + 50;
2186         mode->hsync_end = mode->hsync_start + 50;
2187         mode->htotal = mode->hsync_end + 50;
2188
2189         mode->vsync_start = mode->vdisplay + 50;
2190         mode->vsync_end = mode->vsync_start + 50;
2191         mode->vtotal = mode->vsync_end + 50;
2192
2193         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
2194         mode->vrefresh = drm_mode_vrefresh(mode);
2195 }
2196
2197
2198 int vmw_du_connector_fill_modes(struct drm_connector *connector,
2199                                 uint32_t max_width, uint32_t max_height)
2200 {
2201         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2202         struct drm_device *dev = connector->dev;
2203         struct vmw_private *dev_priv = vmw_priv(dev);
2204         struct drm_display_mode *mode = NULL;
2205         struct drm_display_mode *bmode;
2206         struct drm_display_mode prefmode = { DRM_MODE("preferred",
2207                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
2208                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2209                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
2210         };
2211         int i;
2212         u32 assumed_bpp = 4;
2213
2214         if (dev_priv->assume_16bpp)
2215                 assumed_bpp = 2;
2216
2217         max_width  = min(max_width,  dev_priv->texture_max_width);
2218         max_height = min(max_height, dev_priv->texture_max_height);
2219
2220         /*
2221          * For STDU extra limit for a mode on SVGA_REG_SCREENTARGET_MAX_WIDTH/
2222          * HEIGHT registers.
2223          */
2224         if (dev_priv->active_display_unit == vmw_du_screen_target) {
2225                 max_width  = min(max_width,  dev_priv->stdu_max_width);
2226                 max_height = min(max_height, dev_priv->stdu_max_height);
2227         }
2228
2229         /* Add preferred mode */
2230         mode = drm_mode_duplicate(dev, &prefmode);
2231         if (!mode)
2232                 return 0;
2233         mode->hdisplay = du->pref_width;
2234         mode->vdisplay = du->pref_height;
2235         vmw_guess_mode_timing(mode);
2236
2237         if (vmw_kms_validate_mode_vram(dev_priv,
2238                                         mode->hdisplay * assumed_bpp,
2239                                         mode->vdisplay)) {
2240                 drm_mode_probed_add(connector, mode);
2241         } else {
2242                 drm_mode_destroy(dev, mode);
2243                 mode = NULL;
2244         }
2245
2246         if (du->pref_mode) {
2247                 list_del_init(&du->pref_mode->head);
2248                 drm_mode_destroy(dev, du->pref_mode);
2249         }
2250
2251         /* mode might be null here, this is intended */
2252         du->pref_mode = mode;
2253
2254         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
2255                 bmode = &vmw_kms_connector_builtin[i];
2256                 if (bmode->hdisplay > max_width ||
2257                     bmode->vdisplay > max_height)
2258                         continue;
2259
2260                 if (!vmw_kms_validate_mode_vram(dev_priv,
2261                                                 bmode->hdisplay * assumed_bpp,
2262                                                 bmode->vdisplay))
2263                         continue;
2264
2265                 mode = drm_mode_duplicate(dev, bmode);
2266                 if (!mode)
2267                         return 0;
2268                 mode->vrefresh = drm_mode_vrefresh(mode);
2269
2270                 drm_mode_probed_add(connector, mode);
2271         }
2272
2273         drm_connector_list_update(connector);
2274         /* Move the prefered mode first, help apps pick the right mode. */
2275         drm_mode_sort(&connector->modes);
2276
2277         return 1;
2278 }
2279
2280 int vmw_du_connector_set_property(struct drm_connector *connector,
2281                                   struct drm_property *property,
2282                                   uint64_t val)
2283 {
2284         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2285         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2286
2287         if (property == dev_priv->implicit_placement_property)
2288                 du->is_implicit = val;
2289
2290         return 0;
2291 }
2292
2293
2294
2295 /**
2296  * vmw_du_connector_atomic_set_property - Atomic version of get property
2297  *
2298  * @crtc - crtc the property is associated with
2299  *
2300  * Returns:
2301  * Zero on success, negative errno on failure.
2302  */
2303 int
2304 vmw_du_connector_atomic_set_property(struct drm_connector *connector,
2305                                      struct drm_connector_state *state,
2306                                      struct drm_property *property,
2307                                      uint64_t val)
2308 {
2309         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2310         struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
2311         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2312
2313
2314         if (property == dev_priv->implicit_placement_property) {
2315                 vcs->is_implicit = val;
2316
2317                 /*
2318                  * We should really be doing a drm_atomic_commit() to
2319                  * commit the new state, but since this doesn't cause
2320                  * an immedate state change, this is probably ok
2321                  */
2322                 du->is_implicit = vcs->is_implicit;
2323         } else {
2324                 return -EINVAL;
2325         }
2326
2327         return 0;
2328 }
2329
2330
2331 /**
2332  * vmw_du_connector_atomic_get_property - Atomic version of get property
2333  *
2334  * @connector - connector the property is associated with
2335  *
2336  * Returns:
2337  * Zero on success, negative errno on failure.
2338  */
2339 int
2340 vmw_du_connector_atomic_get_property(struct drm_connector *connector,
2341                                      const struct drm_connector_state *state,
2342                                      struct drm_property *property,
2343                                      uint64_t *val)
2344 {
2345         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2346         struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
2347
2348         if (property == dev_priv->implicit_placement_property)
2349                 *val = vcs->is_implicit;
2350         else {
2351                 DRM_ERROR("Invalid Property %s\n", property->name);
2352                 return -EINVAL;
2353         }
2354
2355         return 0;
2356 }
2357
2358 /**
2359  * vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl
2360  * @dev: drm device for the ioctl
2361  * @data: data pointer for the ioctl
2362  * @file_priv: drm file for the ioctl call
2363  *
2364  * Update preferred topology of display unit as per ioctl request. The topology
2365  * is expressed as array of drm_vmw_rect.
2366  * e.g.
2367  * [0 0 640 480] [640 0 800 600] [0 480 640 480]
2368  *
2369  * NOTE:
2370  * The x and y offset (upper left) in drm_vmw_rect cannot be less than 0. Beside
2371  * device limit on topology, x + w and y + h (lower right) cannot be greater
2372  * than INT_MAX. So topology beyond these limits will return with error.
2373  *
2374  * Returns:
2375  * Zero on success, negative errno on failure.
2376  */
2377 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
2378                                 struct drm_file *file_priv)
2379 {
2380         struct vmw_private *dev_priv = vmw_priv(dev);
2381         struct drm_mode_config *mode_config = &dev->mode_config;
2382         struct drm_vmw_update_layout_arg *arg =
2383                 (struct drm_vmw_update_layout_arg *)data;
2384         void __user *user_rects;
2385         struct drm_vmw_rect *rects;
2386         struct drm_rect *drm_rects;
2387         unsigned rects_size;
2388         int ret, i;
2389
2390         if (!arg->num_outputs) {
2391                 struct drm_rect def_rect = {0, 0, 800, 600};
2392                 vmw_du_update_layout(dev_priv, 1, &def_rect);
2393                 return 0;
2394         }
2395
2396         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
2397         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
2398                         GFP_KERNEL);
2399         if (unlikely(!rects))
2400                 return -ENOMEM;
2401
2402         user_rects = (void __user *)(unsigned long)arg->rects;
2403         ret = copy_from_user(rects, user_rects, rects_size);
2404         if (unlikely(ret != 0)) {
2405                 DRM_ERROR("Failed to get rects.\n");
2406                 ret = -EFAULT;
2407                 goto out_free;
2408         }
2409
2410         drm_rects = (struct drm_rect *)rects;
2411
2412         for (i = 0; i < arg->num_outputs; i++) {
2413                 struct drm_vmw_rect curr_rect;
2414
2415                 /* Verify user-space for overflow as kernel use drm_rect */
2416                 if ((rects[i].x + rects[i].w > INT_MAX) ||
2417                     (rects[i].y + rects[i].h > INT_MAX)) {
2418                         ret = -ERANGE;
2419                         goto out_free;
2420                 }
2421
2422                 curr_rect = rects[i];
2423                 drm_rects[i].x1 = curr_rect.x;
2424                 drm_rects[i].y1 = curr_rect.y;
2425                 drm_rects[i].x2 = curr_rect.x + curr_rect.w;
2426                 drm_rects[i].y2 = curr_rect.y + curr_rect.h;
2427
2428                 /*
2429                  * Currently this check is limiting the topology within
2430                  * mode_config->max (which actually is max texture size
2431                  * supported by virtual device). This limit is here to address
2432                  * window managers that create a big framebuffer for whole
2433                  * topology.
2434                  */
2435                 if (drm_rects[i].x1 < 0 ||  drm_rects[i].y1 < 0 ||
2436                     drm_rects[i].x2 > mode_config->max_width ||
2437                     drm_rects[i].y2 > mode_config->max_height) {
2438                         DRM_ERROR("Invalid GUI layout.\n");
2439                         ret = -EINVAL;
2440                         goto out_free;
2441                 }
2442         }
2443
2444         ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
2445
2446         if (ret == 0)
2447                 vmw_du_update_layout(dev_priv, arg->num_outputs, drm_rects);
2448
2449 out_free:
2450         kfree(rects);
2451         return ret;
2452 }
2453
2454 /**
2455  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
2456  * on a set of cliprects and a set of display units.
2457  *
2458  * @dev_priv: Pointer to a device private structure.
2459  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
2460  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
2461  * Cliprects are given in framebuffer coordinates.
2462  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
2463  * be NULL. Cliprects are given in source coordinates.
2464  * @dest_x: X coordinate offset for the crtc / destination clip rects.
2465  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
2466  * @num_clips: Number of cliprects in the @clips or @vclips array.
2467  * @increment: Integer with which to increment the clip counter when looping.
2468  * Used to skip a predetermined number of clip rects.
2469  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
2470  */
2471 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
2472                          struct vmw_framebuffer *framebuffer,
2473                          const struct drm_clip_rect *clips,
2474                          const struct drm_vmw_rect *vclips,
2475                          s32 dest_x, s32 dest_y,
2476                          int num_clips,
2477                          int increment,
2478                          struct vmw_kms_dirty *dirty)
2479 {
2480         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
2481         struct drm_crtc *crtc;
2482         u32 num_units = 0;
2483         u32 i, k;
2484
2485         dirty->dev_priv = dev_priv;
2486
2487         /* If crtc is passed, no need to iterate over other display units */
2488         if (dirty->crtc) {
2489                 units[num_units++] = vmw_crtc_to_du(dirty->crtc);
2490         } else {
2491                 list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
2492                                     head) {
2493                         struct drm_plane *plane = crtc->primary;
2494
2495                         if (plane->state->fb == &framebuffer->base)
2496                                 units[num_units++] = vmw_crtc_to_du(crtc);
2497                 }
2498         }
2499
2500         for (k = 0; k < num_units; k++) {
2501                 struct vmw_display_unit *unit = units[k];
2502                 s32 crtc_x = unit->crtc.x;
2503                 s32 crtc_y = unit->crtc.y;
2504                 s32 crtc_width = unit->crtc.mode.hdisplay;
2505                 s32 crtc_height = unit->crtc.mode.vdisplay;
2506                 const struct drm_clip_rect *clips_ptr = clips;
2507                 const struct drm_vmw_rect *vclips_ptr = vclips;
2508
2509                 dirty->unit = unit;
2510                 if (dirty->fifo_reserve_size > 0) {
2511                         dirty->cmd = vmw_fifo_reserve(dev_priv,
2512                                                       dirty->fifo_reserve_size);
2513                         if (!dirty->cmd) {
2514                                 DRM_ERROR("Couldn't reserve fifo space "
2515                                           "for dirty blits.\n");
2516                                 return -ENOMEM;
2517                         }
2518                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
2519                 }
2520                 dirty->num_hits = 0;
2521                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
2522                        vclips_ptr += increment) {
2523                         s32 clip_left;
2524                         s32 clip_top;
2525
2526                         /*
2527                          * Select clip array type. Note that integer type
2528                          * in @clips is unsigned short, whereas in @vclips
2529                          * it's 32-bit.
2530                          */
2531                         if (clips) {
2532                                 dirty->fb_x = (s32) clips_ptr->x1;
2533                                 dirty->fb_y = (s32) clips_ptr->y1;
2534                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
2535                                         crtc_x;
2536                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
2537                                         crtc_y;
2538                         } else {
2539                                 dirty->fb_x = vclips_ptr->x;
2540                                 dirty->fb_y = vclips_ptr->y;
2541                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
2542                                         dest_x - crtc_x;
2543                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
2544                                         dest_y - crtc_y;
2545                         }
2546
2547                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
2548                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
2549
2550                         /* Skip this clip if it's outside the crtc region */
2551                         if (dirty->unit_x1 >= crtc_width ||
2552                             dirty->unit_y1 >= crtc_height ||
2553                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
2554                                 continue;
2555
2556                         /* Clip right and bottom to crtc limits */
2557                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
2558                                                crtc_width);
2559                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
2560                                                crtc_height);
2561
2562                         /* Clip left and top to crtc limits */
2563                         clip_left = min_t(s32, dirty->unit_x1, 0);
2564                         clip_top = min_t(s32, dirty->unit_y1, 0);
2565                         dirty->unit_x1 -= clip_left;
2566                         dirty->unit_y1 -= clip_top;
2567                         dirty->fb_x -= clip_left;
2568                         dirty->fb_y -= clip_top;
2569
2570                         dirty->clip(dirty);
2571                 }
2572
2573                 dirty->fifo_commit(dirty);
2574         }
2575
2576         return 0;
2577 }
2578
2579 /**
2580  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
2581  * command submission.
2582  *
2583  * @dev_priv. Pointer to a device private structure.
2584  * @buf: The buffer object
2585  * @interruptible: Whether to perform waits as interruptible.
2586  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
2587  * The buffer will be validated as a GMR. Already pinned buffers will not be
2588  * validated.
2589  *
2590  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
2591  * interrupted by a signal.
2592  */
2593 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
2594                                   struct vmw_buffer_object *buf,
2595                                   bool interruptible,
2596                                   bool validate_as_mob,
2597                                   bool for_cpu_blit)
2598 {
2599         struct ttm_operation_ctx ctx = {
2600                 .interruptible = interruptible,
2601                 .no_wait_gpu = false};
2602         struct ttm_buffer_object *bo = &buf->base;
2603         int ret;
2604
2605         ttm_bo_reserve(bo, false, false, NULL);
2606         if (for_cpu_blit)
2607                 ret = ttm_bo_validate(bo, &vmw_nonfixed_placement, &ctx);
2608         else
2609                 ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
2610                                                  validate_as_mob);
2611         if (ret)
2612                 ttm_bo_unreserve(bo);
2613
2614         return ret;
2615 }
2616
2617 /**
2618  * vmw_kms_helper_buffer_revert - Undo the actions of
2619  * vmw_kms_helper_buffer_prepare.
2620  *
2621  * @res: Pointer to the buffer object.
2622  *
2623  * Helper to be used if an error forces the caller to undo the actions of
2624  * vmw_kms_helper_buffer_prepare.
2625  */
2626 void vmw_kms_helper_buffer_revert(struct vmw_buffer_object *buf)
2627 {
2628         if (buf)
2629                 ttm_bo_unreserve(&buf->base);
2630 }
2631
2632 /**
2633  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
2634  * kms command submission.
2635  *
2636  * @dev_priv: Pointer to a device private structure.
2637  * @file_priv: Pointer to a struct drm_file representing the caller's
2638  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
2639  * if non-NULL, @user_fence_rep must be non-NULL.
2640  * @buf: The buffer object.
2641  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
2642  * ref-counted fence pointer is returned here.
2643  * @user_fence_rep: Optional pointer to a user-space provided struct
2644  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
2645  * function copies fence data to user-space in a fail-safe manner.
2646  */
2647 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
2648                                   struct drm_file *file_priv,
2649                                   struct vmw_buffer_object *buf,
2650                                   struct vmw_fence_obj **out_fence,
2651                                   struct drm_vmw_fence_rep __user *
2652                                   user_fence_rep)
2653 {
2654         struct vmw_fence_obj *fence;
2655         uint32_t handle;
2656         int ret;
2657
2658         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
2659                                          file_priv ? &handle : NULL);
2660         if (buf)
2661                 vmw_bo_fence_single(&buf->base, fence);
2662         if (file_priv)
2663                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
2664                                             ret, user_fence_rep, fence,
2665                                             handle, -1, NULL);
2666         if (out_fence)
2667                 *out_fence = fence;
2668         else
2669                 vmw_fence_obj_unreference(&fence);
2670
2671         vmw_kms_helper_buffer_revert(buf);
2672 }
2673
2674
2675 /**
2676  * vmw_kms_helper_resource_revert - Undo the actions of
2677  * vmw_kms_helper_resource_prepare.
2678  *
2679  * @res: Pointer to the resource. Typically a surface.
2680  *
2681  * Helper to be used if an error forces the caller to undo the actions of
2682  * vmw_kms_helper_resource_prepare.
2683  */
2684 void vmw_kms_helper_resource_revert(struct vmw_validation_ctx *ctx)
2685 {
2686         struct vmw_resource *res = ctx->res;
2687
2688         vmw_kms_helper_buffer_revert(ctx->buf);
2689         vmw_bo_unreference(&ctx->buf);
2690         vmw_resource_unreserve(res, false, NULL, 0);
2691         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2692 }
2693
2694 /**
2695  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
2696  * command submission.
2697  *
2698  * @res: Pointer to the resource. Typically a surface.
2699  * @interruptible: Whether to perform waits as interruptible.
2700  *
2701  * Reserves and validates also the backup buffer if a guest-backed resource.
2702  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
2703  * interrupted by a signal.
2704  */
2705 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
2706                                     bool interruptible,
2707                                     struct vmw_validation_ctx *ctx)
2708 {
2709         int ret = 0;
2710
2711         ctx->buf = NULL;
2712         ctx->res = res;
2713
2714         if (interruptible)
2715                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
2716         else
2717                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
2718
2719         if (unlikely(ret != 0))
2720                 return -ERESTARTSYS;
2721
2722         ret = vmw_resource_reserve(res, interruptible, false);
2723         if (ret)
2724                 goto out_unlock;
2725
2726         if (res->backup) {
2727                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
2728                                                     interruptible,
2729                                                     res->dev_priv->has_mob,
2730                                                     false);
2731                 if (ret)
2732                         goto out_unreserve;
2733
2734                 ctx->buf = vmw_bo_reference(res->backup);
2735         }
2736         ret = vmw_resource_validate(res);
2737         if (ret)
2738                 goto out_revert;
2739         return 0;
2740
2741 out_revert:
2742         vmw_kms_helper_buffer_revert(ctx->buf);
2743 out_unreserve:
2744         vmw_resource_unreserve(res, false, NULL, 0);
2745 out_unlock:
2746         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2747         return ret;
2748 }
2749
2750 /**
2751  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
2752  * kms command submission.
2753  *
2754  * @res: Pointer to the resource. Typically a surface.
2755  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
2756  * ref-counted fence pointer is returned here.
2757  */
2758 void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
2759                                     struct vmw_fence_obj **out_fence)
2760 {
2761         struct vmw_resource *res = ctx->res;
2762
2763         if (ctx->buf || out_fence)
2764                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, ctx->buf,
2765                                              out_fence, NULL);
2766
2767         vmw_bo_unreference(&ctx->buf);
2768         vmw_resource_unreserve(res, false, NULL, 0);
2769         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2770 }
2771
2772 /**
2773  * vmw_kms_update_proxy - Helper function to update a proxy surface from
2774  * its backing MOB.
2775  *
2776  * @res: Pointer to the surface resource
2777  * @clips: Clip rects in framebuffer (surface) space.
2778  * @num_clips: Number of clips in @clips.
2779  * @increment: Integer with which to increment the clip counter when looping.
2780  * Used to skip a predetermined number of clip rects.
2781  *
2782  * This function makes sure the proxy surface is updated from its backing MOB
2783  * using the region given by @clips. The surface resource @res and its backing
2784  * MOB needs to be reserved and validated on call.
2785  */
2786 int vmw_kms_update_proxy(struct vmw_resource *res,
2787                          const struct drm_clip_rect *clips,
2788                          unsigned num_clips,
2789                          int increment)
2790 {
2791         struct vmw_private *dev_priv = res->dev_priv;
2792         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2793         struct {
2794                 SVGA3dCmdHeader header;
2795                 SVGA3dCmdUpdateGBImage body;
2796         } *cmd;
2797         SVGA3dBox *box;
2798         size_t copy_size = 0;
2799         int i;
2800
2801         if (!clips)
2802                 return 0;
2803
2804         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2805         if (!cmd) {
2806                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2807                           "update.\n");
2808                 return -ENOMEM;
2809         }
2810
2811         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2812                 box = &cmd->body.box;
2813
2814                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2815                 cmd->header.size = sizeof(cmd->body);
2816                 cmd->body.image.sid = res->id;
2817                 cmd->body.image.face = 0;
2818                 cmd->body.image.mipmap = 0;
2819
2820                 if (clips->x1 > size->width || clips->x2 > size->width ||
2821                     clips->y1 > size->height || clips->y2 > size->height) {
2822                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2823                         return -EINVAL;
2824                 }
2825
2826                 box->x = clips->x1;
2827                 box->y = clips->y1;
2828                 box->z = 0;
2829                 box->w = clips->x2 - clips->x1;
2830                 box->h = clips->y2 - clips->y1;
2831                 box->d = 1;
2832
2833                 copy_size += sizeof(*cmd);
2834         }
2835
2836         vmw_fifo_commit(dev_priv, copy_size);
2837
2838         return 0;
2839 }
2840
2841 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2842                             unsigned unit,
2843                             u32 max_width,
2844                             u32 max_height,
2845                             struct drm_connector **p_con,
2846                             struct drm_crtc **p_crtc,
2847                             struct drm_display_mode **p_mode)
2848 {
2849         struct drm_connector *con;
2850         struct vmw_display_unit *du;
2851         struct drm_display_mode *mode;
2852         int i = 0;
2853         int ret = 0;
2854
2855         mutex_lock(&dev_priv->dev->mode_config.mutex);
2856         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2857                             head) {
2858                 if (i == unit)
2859                         break;
2860
2861                 ++i;
2862         }
2863
2864         if (i != unit) {
2865                 DRM_ERROR("Could not find initial display unit.\n");
2866                 ret = -EINVAL;
2867                 goto out_unlock;
2868         }
2869
2870         if (list_empty(&con->modes))
2871                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2872
2873         if (list_empty(&con->modes)) {
2874                 DRM_ERROR("Could not find initial display mode.\n");
2875                 ret = -EINVAL;
2876                 goto out_unlock;
2877         }
2878
2879         du = vmw_connector_to_du(con);
2880         *p_con = con;
2881         *p_crtc = &du->crtc;
2882
2883         list_for_each_entry(mode, &con->modes, head) {
2884                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2885                         break;
2886         }
2887
2888         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2889                 *p_mode = mode;
2890         else {
2891                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2892                 *p_mode = list_first_entry(&con->modes,
2893                                            struct drm_display_mode,
2894                                            head);
2895         }
2896
2897  out_unlock:
2898         mutex_unlock(&dev_priv->dev->mode_config.mutex);
2899
2900         return ret;
2901 }
2902
2903 /**
2904  * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
2905  *
2906  * @dev_priv: Pointer to a device private struct.
2907  * @du: The display unit of the crtc.
2908  */
2909 void vmw_kms_del_active(struct vmw_private *dev_priv,
2910                         struct vmw_display_unit *du)
2911 {
2912         mutex_lock(&dev_priv->global_kms_state_mutex);
2913         if (du->active_implicit) {
2914                 if (--(dev_priv->num_implicit) == 0)
2915                         dev_priv->implicit_fb = NULL;
2916                 du->active_implicit = false;
2917         }
2918         mutex_unlock(&dev_priv->global_kms_state_mutex);
2919 }
2920
2921 /**
2922  * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
2923  *
2924  * @vmw_priv: Pointer to a device private struct.
2925  * @du: The display unit of the crtc.
2926  * @vfb: The implicit framebuffer
2927  *
2928  * Registers a binding to an implicit framebuffer.
2929  */
2930 void vmw_kms_add_active(struct vmw_private *dev_priv,
2931                         struct vmw_display_unit *du,
2932                         struct vmw_framebuffer *vfb)
2933 {
2934         mutex_lock(&dev_priv->global_kms_state_mutex);
2935         WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
2936
2937         if (!du->active_implicit && du->is_implicit) {
2938                 dev_priv->implicit_fb = vfb;
2939                 du->active_implicit = true;
2940                 dev_priv->num_implicit++;
2941         }
2942         mutex_unlock(&dev_priv->global_kms_state_mutex);
2943 }
2944
2945 /**
2946  * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
2947  *
2948  * @dev_priv: Pointer to device-private struct.
2949  * @crtc: The crtc we want to flip.
2950  *
2951  * Returns true or false depending whether it's OK to flip this crtc
2952  * based on the criterion that we must not have more than one implicit
2953  * frame-buffer at any one time.
2954  */
2955 bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
2956                             struct drm_crtc *crtc)
2957 {
2958         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2959         bool ret;
2960
2961         mutex_lock(&dev_priv->global_kms_state_mutex);
2962         ret = !du->is_implicit || dev_priv->num_implicit == 1;
2963         mutex_unlock(&dev_priv->global_kms_state_mutex);
2964
2965         return ret;
2966 }
2967
2968 /**
2969  * vmw_kms_update_implicit_fb - Update the implicit fb.
2970  *
2971  * @dev_priv: Pointer to device-private struct.
2972  * @crtc: The crtc the new implicit frame-buffer is bound to.
2973  */
2974 void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
2975                                 struct drm_crtc *crtc)
2976 {
2977         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2978         struct drm_plane *plane = crtc->primary;
2979         struct vmw_framebuffer *vfb;
2980
2981         mutex_lock(&dev_priv->global_kms_state_mutex);
2982
2983         if (!du->is_implicit)
2984                 goto out_unlock;
2985
2986         vfb = vmw_framebuffer_to_vfb(plane->state->fb);
2987         WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
2988                      dev_priv->implicit_fb != vfb);
2989
2990         dev_priv->implicit_fb = vfb;
2991 out_unlock:
2992         mutex_unlock(&dev_priv->global_kms_state_mutex);
2993 }
2994
2995 /**
2996  * vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
2997  * property.
2998  *
2999  * @dev_priv: Pointer to a device private struct.
3000  * @immutable: Whether the property is immutable.
3001  *
3002  * Sets up the implicit placement property unless it's already set up.
3003  */
3004 void
3005 vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
3006                                            bool immutable)
3007 {
3008         if (dev_priv->implicit_placement_property)
3009                 return;
3010
3011         dev_priv->implicit_placement_property =
3012                 drm_property_create_range(dev_priv->dev,
3013                                           immutable ?
3014                                           DRM_MODE_PROP_IMMUTABLE : 0,
3015                                           "implicit_placement", 0, 1);
3016
3017 }
3018
3019
3020 /**
3021  * vmw_kms_set_config - Wrapper around drm_atomic_helper_set_config
3022  *
3023  * @set: The configuration to set.
3024  *
3025  * The vmwgfx Xorg driver doesn't assign the mode::type member, which
3026  * when drm_mode_set_crtcinfo is called as part of the configuration setting
3027  * causes it to return incorrect crtc dimensions causing severe problems in
3028  * the vmwgfx modesetting. So explicitly clear that member before calling
3029  * into drm_atomic_helper_set_config.
3030  */
3031 int vmw_kms_set_config(struct drm_mode_set *set,
3032                        struct drm_modeset_acquire_ctx *ctx)
3033 {
3034         if (set && set->mode)
3035                 set->mode->type = 0;
3036
3037         return drm_atomic_helper_set_config(set, ctx);
3038 }
3039
3040
3041 /**
3042  * vmw_kms_suspend - Save modesetting state and turn modesetting off.
3043  *
3044  * @dev: Pointer to the drm device
3045  * Return: 0 on success. Negative error code on failure.
3046  */
3047 int vmw_kms_suspend(struct drm_device *dev)
3048 {
3049         struct vmw_private *dev_priv = vmw_priv(dev);
3050
3051         dev_priv->suspend_state = drm_atomic_helper_suspend(dev);
3052         if (IS_ERR(dev_priv->suspend_state)) {
3053                 int ret = PTR_ERR(dev_priv->suspend_state);
3054
3055                 DRM_ERROR("Failed kms suspend: %d\n", ret);
3056                 dev_priv->suspend_state = NULL;
3057
3058                 return ret;
3059         }
3060
3061         return 0;
3062 }
3063
3064
3065 /**
3066  * vmw_kms_resume - Re-enable modesetting and restore state
3067  *
3068  * @dev: Pointer to the drm device
3069  * Return: 0 on success. Negative error code on failure.
3070  *
3071  * State is resumed from a previous vmw_kms_suspend(). It's illegal
3072  * to call this function without a previous vmw_kms_suspend().
3073  */
3074 int vmw_kms_resume(struct drm_device *dev)
3075 {
3076         struct vmw_private *dev_priv = vmw_priv(dev);
3077         int ret;
3078
3079         if (WARN_ON(!dev_priv->suspend_state))
3080                 return 0;
3081
3082         ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
3083         dev_priv->suspend_state = NULL;
3084
3085         return ret;
3086 }
3087
3088 /**
3089  * vmw_kms_lost_device - Notify kms that modesetting capabilities will be lost
3090  *
3091  * @dev: Pointer to the drm device
3092  */
3093 void vmw_kms_lost_device(struct drm_device *dev)
3094 {
3095         drm_atomic_helper_shutdown(dev);
3096 }