drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

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