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->host_map, 0, sizeof(vps->host_map));
 701         vps->cpp = 0;
 702
 703         /* Each ref counted resource needs to be acquired again */
 704         if (vps->surf)
 705                 (void) vmw_surface_reference(vps->surf);
 706
 707         if (vps->dmabuf)
 708                 (void) vmw_dmabuf_reference(vps->dmabuf);
 709
 710         state = &vps->base;
 711
 712         __drm_atomic_helper_plane_duplicate_state(plane, state);
 713
 714         return state;
 715 }
 716
 717
 718 /**
 719  * vmw_du_plane_reset - creates a blank vmw plane state
 720  * @plane: drm plane
 721  *
 722  * Resets the atomic state for @plane by freeing the state pointer (which might
 723  * be NULL, e.g. at driver load time) and allocating a new empty state object.
 724  */
 725 void vmw_du_plane_reset(struct drm_plane *plane)
 726 {
 727         struct vmw_plane_state *vps;
 728
 729
 730         if (plane->state)
 731                 vmw_du_plane_destroy_state(plane, plane->state);
 732
 733         vps = kzalloc(sizeof(*vps), GFP_KERNEL);
 734
 735         if (!vps) {
 736                 DRM_ERROR("Cannot allocate vmw_plane_state\n");
 737                 return;
 738         }
 739
 740         plane->state = &vps->base;
 741         plane->state->plane = plane;
 742         plane->state->rotation = DRM_MODE_ROTATE_0;
 743 }
 744
 745
 746 /**
 747  * vmw_du_plane_destroy_state - destroy plane state
 748  * @plane: DRM plane
 749  * @state: state object to destroy
 750  *
 751  * Destroys the plane state (both common and vmw-specific) for the
 752  * specified plane.
 753  */
 754 void
 755 vmw_du_plane_destroy_state(struct drm_plane *plane,
 756                            struct drm_plane_state *state)
 757 {
 758         struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
 759
 760
 761         /* Should have been freed by cleanup_fb */
 762         if (vps->host_map.virtual) {
 763                 DRM_ERROR("Host mapping not freed\n");
 764                 ttm_bo_kunmap(&vps->host_map);
 765         }
 766
 767         if (vps->surf)
 768                 vmw_surface_unreference(&vps->surf);
 769
 770         if (vps->dmabuf)
 771                 vmw_dmabuf_unreference(&vps->dmabuf);
 772
 773         drm_atomic_helper_plane_destroy_state(plane, state);
 774 }
 775
 776
 777 /**
 778  * vmw_du_connector_duplicate_state - duplicate connector state
 779  * @connector: DRM connector
 780  *
 781  * Allocates and returns a copy of the connector state (both common and
 782  * vmw-specific) for the specified connector.
 783  *
 784  * Returns: The newly allocated connector state, or NULL on failure.
 785  */
 786 struct drm_connector_state *
 787 vmw_du_connector_duplicate_state(struct drm_connector *connector)
 788 {
 789         struct drm_connector_state *state;
 790         struct vmw_connector_state *vcs;
 791
 792         if (WARN_ON(!connector->state))
 793                 return NULL;
 794
 795         vcs = kmemdup(connector->state, sizeof(*vcs), GFP_KERNEL);
 796
 797         if (!vcs)
 798                 return NULL;
 799
 800         state = &vcs->base;
 801
 802         __drm_atomic_helper_connector_duplicate_state(connector, state);
 803
 804         return state;
 805 }
 806
 807
 808 /**
 809  * vmw_du_connector_reset - creates a blank vmw connector state
 810  * @connector: DRM connector
 811  *
 812  * Resets the atomic state for @connector by freeing the state pointer (which
 813  * might be NULL, e.g. at driver load time) and allocating a new empty state
 814  * object.
 815  */
 816 void vmw_du_connector_reset(struct drm_connector *connector)
 817 {
 818         struct vmw_connector_state *vcs;
 819
 820
 821         if (connector->state) {
 822                 __drm_atomic_helper_connector_destroy_state(connector->state);
 823
 824                 kfree(vmw_connector_state_to_vcs(connector->state));
 825         }
 826
 827         vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
 828
 829         if (!vcs) {
 830                 DRM_ERROR("Cannot allocate vmw_connector_state\n");
 831                 return;
 832         }
 833
 834         __drm_atomic_helper_connector_reset(connector, &vcs->base);
 835 }
 836
 837
 838 /**
 839  * vmw_du_connector_destroy_state - destroy connector state
 840  * @connector: DRM connector
 841  * @state: state object to destroy
 842  *
 843  * Destroys the connector state (both common and vmw-specific) for the
 844  * specified plane.
 845  */
 846 void
 847 vmw_du_connector_destroy_state(struct drm_connector *connector,
 848                           struct drm_connector_state *state)
 849 {
 850         drm_atomic_helper_connector_destroy_state(connector, state);
 851 }
 852 /*
 853  * Generic framebuffer code
 854  */
 855
 856 /*
 857  * Surface framebuffer code
 858  */
 859
 860 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
 861 {
 862         struct vmw_framebuffer_surface *vfbs =
 863                 vmw_framebuffer_to_vfbs(framebuffer);
 864
 865         drm_framebuffer_cleanup(framebuffer);
 866         vmw_surface_unreference(&vfbs->surface);
 867         if (vfbs->base.user_obj)
 868                 ttm_base_object_unref(&vfbs->base.user_obj);
 869
 870         kfree(vfbs);
 871 }
 872
 873 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
 874                                   struct drm_file *file_priv,
 875                                   unsigned flags, unsigned color,
 876                                   struct drm_clip_rect *clips,
 877                                   unsigned num_clips)
 878 {
 879         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
 880         struct vmw_framebuffer_surface *vfbs =
 881                 vmw_framebuffer_to_vfbs(framebuffer);
 882         struct drm_clip_rect norect;
 883         int ret, inc = 1;
 884
 885         /* Legacy Display Unit does not support 3D */
 886         if (dev_priv->active_display_unit == vmw_du_legacy)
 887                 return -EINVAL;
 888
 889         drm_modeset_lock_all(dev_priv->dev);
 890
 891         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 892         if (unlikely(ret != 0)) {
 893                 drm_modeset_unlock_all(dev_priv->dev);
 894                 return ret;
 895         }
 896
 897         if (!num_clips) {
 898                 num_clips = 1;
 899                 clips = &norect;
 900                 norect.x1 = norect.y1 = 0;
 901                 norect.x2 = framebuffer->width;
 902                 norect.y2 = framebuffer->height;
 903         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 904                 num_clips /= 2;
 905                 inc = 2; /* skip source rects */
 906         }
 907
 908         if (dev_priv->active_display_unit == vmw_du_screen_object)
 909                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, &vfbs->base,
 910                                                    clips, NULL, NULL, 0, 0,
 911                                                    num_clips, inc, NULL);
 912         else
 913                 ret = vmw_kms_stdu_surface_dirty(dev_priv, &vfbs->base,
 914                                                  clips, NULL, NULL, 0, 0,
 915                                                  num_clips, inc, NULL);
 916
 917         vmw_fifo_flush(dev_priv, false);
 918         ttm_read_unlock(&dev_priv->reservation_sem);
 919
 920         drm_modeset_unlock_all(dev_priv->dev);
 921
 922         return 0;
 923 }
 924
 925 /**
 926  * vmw_kms_readback - Perform a readback from the screen system to
 927  * a dma-buffer backed framebuffer.
 928  *
 929  * @dev_priv: Pointer to the device private structure.
 930  * @file_priv: Pointer to a struct drm_file identifying the caller.
 931  * Must be set to NULL if @user_fence_rep is NULL.
 932  * @vfb: Pointer to the dma-buffer backed framebuffer.
 933  * @user_fence_rep: User-space provided structure for fence information.
 934  * Must be set to non-NULL if @file_priv is non-NULL.
 935  * @vclips: Array of clip rects.
 936  * @num_clips: Number of clip rects in @vclips.
 937  *
 938  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 939  * interrupted.
 940  */
 941 int vmw_kms_readback(struct vmw_private *dev_priv,
 942                      struct drm_file *file_priv,
 943                      struct vmw_framebuffer *vfb,
 944                      struct drm_vmw_fence_rep __user *user_fence_rep,
 945                      struct drm_vmw_rect *vclips,
 946                      uint32_t num_clips)
 947 {
 948         switch (dev_priv->active_display_unit) {
 949         case vmw_du_screen_object:
 950                 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
 951                                             user_fence_rep, vclips, num_clips);
 952         case vmw_du_screen_target:
 953                 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
 954                                         user_fence_rep, NULL, vclips, num_clips,
 955                                         1, false, true);
 956         default:
 957                 WARN_ONCE(true,
 958                           "Readback called with invalid display system.\n");
 959 }
 960
 961         return -ENOSYS;
 962 }
 963
 964
 965 static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
 966         .destroy = vmw_framebuffer_surface_destroy,
 967         .dirty = vmw_framebuffer_surface_dirty,
 968 };
 969
 970 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
 971                                            struct vmw_surface *surface,
 972                                            struct vmw_framebuffer **out,
 973                                            const struct drm_mode_fb_cmd2
 974                                            *mode_cmd,
 975                                            bool is_dmabuf_proxy)
 976
 977 {
 978         struct drm_device *dev = dev_priv->dev;
 979         struct vmw_framebuffer_surface *vfbs;
 980         enum SVGA3dSurfaceFormat format;
 981         int ret;
 982         struct drm_format_name_buf format_name;
 983
 984         /* 3D is only supported on HWv8 and newer hosts */
 985         if (dev_priv->active_display_unit == vmw_du_legacy)
 986                 return -ENOSYS;
 987
 988         /*
 989          * Sanity checks.
 990          */
 991
 992         /* Surface must be marked as a scanout. */
 993         if (unlikely(!surface->scanout))
 994                 return -EINVAL;
 995
 996         if (unlikely(surface->mip_levels[0] != 1 ||
 997                      surface->num_sizes != 1 ||
 998                      surface->base_size.width < mode_cmd->width ||
 999                      surface->base_size.height < mode_cmd->height ||
1000                      surface->base_size.depth != 1)) {
1001                 DRM_ERROR("Incompatible surface dimensions "
1002                           "for requested mode.\n");
1003                 return -EINVAL;
1004         }
1005
1006         switch (mode_cmd->pixel_format) {
1007         case DRM_FORMAT_ARGB8888:
1008                 format = SVGA3D_A8R8G8B8;
1009                 break;
1010         case DRM_FORMAT_XRGB8888:
1011                 format = SVGA3D_X8R8G8B8;
1012                 break;
1013         case DRM_FORMAT_RGB565:
1014                 format = SVGA3D_R5G6B5;
1015                 break;
1016         case DRM_FORMAT_XRGB1555:
1017                 format = SVGA3D_A1R5G5B5;
1018                 break;
1019         default:
1020                 DRM_ERROR("Invalid pixel format: %s\n",
1021                           drm_get_format_name(mode_cmd->pixel_format, &format_name));
1022                 return -EINVAL;
1023         }
1024
1025         /*
1026          * For DX, surface format validation is done when surface->scanout
1027          * is set.
1028          */
1029         if (!dev_priv->has_dx && format != surface->format) {
1030                 DRM_ERROR("Invalid surface format for requested mode.\n");
1031                 return -EINVAL;
1032         }
1033
1034         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
1035         if (!vfbs) {
1036                 ret = -ENOMEM;
1037                 goto out_err1;
1038         }
1039
1040         drm_helper_mode_fill_fb_struct(dev, &vfbs->base.base, mode_cmd);
1041         vfbs->surface = vmw_surface_reference(surface);
1042         vfbs->base.user_handle = mode_cmd->handles[0];
1043         vfbs->is_dmabuf_proxy = is_dmabuf_proxy;
1044
1045         *out = &vfbs->base;
1046
1047         ret = drm_framebuffer_init(dev, &vfbs->base.base,
1048                                    &vmw_framebuffer_surface_funcs);
1049         if (ret)
1050                 goto out_err2;
1051
1052         return 0;
1053
1054 out_err2:
1055         vmw_surface_unreference(&surface);
1056         kfree(vfbs);
1057 out_err1:
1058         return ret;
1059 }
1060
1061 /*
1062  * Dmabuf framebuffer code
1063  */
1064
1065 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
1066 {
1067         struct vmw_framebuffer_dmabuf *vfbd =
1068                 vmw_framebuffer_to_vfbd(framebuffer);
1069
1070         drm_framebuffer_cleanup(framebuffer);
1071         vmw_dmabuf_unreference(&vfbd->buffer);
1072         if (vfbd->base.user_obj)
1073                 ttm_base_object_unref(&vfbd->base.user_obj);
1074
1075         kfree(vfbd);
1076 }
1077
1078 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
1079                                  struct drm_file *file_priv,
1080                                  unsigned flags, unsigned color,
1081                                  struct drm_clip_rect *clips,
1082                                  unsigned num_clips)
1083 {
1084         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1085         struct vmw_framebuffer_dmabuf *vfbd =
1086                 vmw_framebuffer_to_vfbd(framebuffer);
1087         struct drm_clip_rect norect;
1088         int ret, increment = 1;
1089
1090         drm_modeset_lock_all(dev_priv->dev);
1091
1092         ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1093         if (unlikely(ret != 0)) {
1094                 drm_modeset_unlock_all(dev_priv->dev);
1095                 return ret;
1096         }
1097
1098         if (!num_clips) {
1099                 num_clips = 1;
1100                 clips = &norect;
1101                 norect.x1 = norect.y1 = 0;
1102                 norect.x2 = framebuffer->width;
1103                 norect.y2 = framebuffer->height;
1104         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
1105                 num_clips /= 2;
1106                 increment = 2;
1107         }
1108
1109         switch (dev_priv->active_display_unit) {
1110         case vmw_du_screen_target:
1111                 ret = vmw_kms_stdu_dma(dev_priv, NULL, &vfbd->base, NULL,
1112                                        clips, NULL, num_clips, increment,
1113                                        true, true);
1114                 break;
1115         case vmw_du_screen_object:
1116                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, &vfbd->base,
1117                                                   clips, NULL, num_clips,
1118                                                   increment, true, NULL);
1119                 break;
1120         case vmw_du_legacy:
1121                 ret = vmw_kms_ldu_do_dmabuf_dirty(dev_priv, &vfbd->base, 0, 0,
1122                                                   clips, num_clips, increment);
1123                 break;
1124         default:
1125                 ret = -EINVAL;
1126                 WARN_ONCE(true, "Dirty called with invalid display system.\n");
1127                 break;
1128         }
1129
1130         vmw_fifo_flush(dev_priv, false);
1131         ttm_read_unlock(&dev_priv->reservation_sem);
1132
1133         drm_modeset_unlock_all(dev_priv->dev);
1134
1135         return ret;
1136 }
1137
1138 static const struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
1139         .destroy = vmw_framebuffer_dmabuf_destroy,
1140         .dirty = vmw_framebuffer_dmabuf_dirty,
1141 };
1142
1143 /**
1144  * Pin the dmabuffer to the start of vram.
1145  */
1146 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
1147 {
1148         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1149         struct vmw_dma_buffer *buf;
1150         int ret;
1151
1152         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1153                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1154
1155         if (!buf)
1156                 return 0;
1157
1158         switch (dev_priv->active_display_unit) {
1159         case vmw_du_legacy:
1160                 vmw_overlay_pause_all(dev_priv);
1161                 ret = vmw_dmabuf_pin_in_start_of_vram(dev_priv, buf, false);
1162                 vmw_overlay_resume_all(dev_priv);
1163                 break;
1164         case vmw_du_screen_object:
1165         case vmw_du_screen_target:
1166                 if (vfb->dmabuf)
1167                         return vmw_dmabuf_pin_in_vram_or_gmr(dev_priv, buf,
1168                                                              false);
1169
1170                 return vmw_dmabuf_pin_in_placement(dev_priv, buf,
1171                                                    &vmw_mob_placement, false);
1172         default:
1173                 return -EINVAL;
1174         }
1175
1176         return ret;
1177 }
1178
1179 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
1180 {
1181         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1182         struct vmw_dma_buffer *buf;
1183
1184         buf = vfb->dmabuf ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1185                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1186
1187         if (WARN_ON(!buf))
1188                 return 0;
1189
1190         return vmw_dmabuf_unpin(dev_priv, buf, false);
1191 }
1192
1193 /**
1194  * vmw_create_dmabuf_proxy - create a proxy surface for the DMA buf
1195  *
1196  * @dev: DRM device
1197  * @mode_cmd: parameters for the new surface
1198  * @dmabuf_mob: MOB backing the DMA buf
1199  * @srf_out: newly created surface
1200  *
1201  * When the content FB is a DMA buf, we create a surface as a proxy to the
1202  * same buffer.  This way we can do a surface copy rather than a surface DMA.
1203  * This is a more efficient approach
1204  *
1205  * RETURNS:
1206  * 0 on success, error code otherwise
1207  */
1208 static int vmw_create_dmabuf_proxy(struct drm_device *dev,
1209                                    const struct drm_mode_fb_cmd2 *mode_cmd,
1210                                    struct vmw_dma_buffer *dmabuf_mob,
1211                                    struct vmw_surface **srf_out)
1212 {
1213         uint32_t format;
1214         struct drm_vmw_size content_base_size = {0};
1215         struct vmw_resource *res;
1216         unsigned int bytes_pp;
1217         struct drm_format_name_buf format_name;
1218         int ret;
1219
1220         switch (mode_cmd->pixel_format) {
1221         case DRM_FORMAT_ARGB8888:
1222         case DRM_FORMAT_XRGB8888:
1223                 format = SVGA3D_X8R8G8B8;
1224                 bytes_pp = 4;
1225                 break;
1226
1227         case DRM_FORMAT_RGB565:
1228         case DRM_FORMAT_XRGB1555:
1229                 format = SVGA3D_R5G6B5;
1230                 bytes_pp = 2;
1231                 break;
1232
1233         case 8:
1234                 format = SVGA3D_P8;
1235                 bytes_pp = 1;
1236                 break;
1237
1238         default:
1239                 DRM_ERROR("Invalid framebuffer format %s\n",
1240                           drm_get_format_name(mode_cmd->pixel_format, &format_name));
1241                 return -EINVAL;
1242         }
1243
1244         content_base_size.width  = mode_cmd->pitches[0] / bytes_pp;
1245         content_base_size.height = mode_cmd->height;
1246         content_base_size.depth  = 1;
1247
1248         ret = vmw_surface_gb_priv_define(dev,
1249                         0, /* kernel visible only */
1250                         0, /* flags */
1251                         format,
1252                         true, /* can be a scanout buffer */
1253                         1, /* num of mip levels */
1254                         0,
1255                         0,
1256                         content_base_size,
1257                         srf_out);
1258         if (ret) {
1259                 DRM_ERROR("Failed to allocate proxy content buffer\n");
1260                 return ret;
1261         }
1262
1263         res = &(*srf_out)->res;
1264
1265         /* Reserve and switch the backing mob. */
1266         mutex_lock(&res->dev_priv->cmdbuf_mutex);
1267         (void) vmw_resource_reserve(res, false, true);
1268         vmw_dmabuf_unreference(&res->backup);
1269         res->backup = vmw_dmabuf_reference(dmabuf_mob);
1270         res->backup_offset = 0;
1271         vmw_resource_unreserve(res, false, NULL, 0);
1272         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1273
1274         return 0;
1275 }
1276
1277
1278
1279 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
1280                                           struct vmw_dma_buffer *dmabuf,
1281                                           struct vmw_framebuffer **out,
1282                                           const struct drm_mode_fb_cmd2
1283                                           *mode_cmd)
1284
1285 {
1286         struct drm_device *dev = dev_priv->dev;
1287         struct vmw_framebuffer_dmabuf *vfbd;
1288         unsigned int requested_size;
1289         struct drm_format_name_buf format_name;
1290         int ret;
1291
1292         requested_size = mode_cmd->height * mode_cmd->pitches[0];
1293         if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
1294                 DRM_ERROR("Screen buffer object size is too small "
1295                           "for requested mode.\n");
1296                 return -EINVAL;
1297         }
1298
1299         /* Limited framebuffer color depth support for screen objects */
1300         if (dev_priv->active_display_unit == vmw_du_screen_object) {
1301                 switch (mode_cmd->pixel_format) {
1302                 case DRM_FORMAT_XRGB8888:
1303                 case DRM_FORMAT_ARGB8888:
1304                         break;
1305                 case DRM_FORMAT_XRGB1555:
1306                 case DRM_FORMAT_RGB565:
1307                         break;
1308                 default:
1309                         DRM_ERROR("Invalid pixel format: %s\n",
1310                                   drm_get_format_name(mode_cmd->pixel_format, &format_name));
1311                         return -EINVAL;
1312                 }
1313         }
1314
1315         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
1316         if (!vfbd) {
1317                 ret = -ENOMEM;
1318                 goto out_err1;
1319         }
1320
1321         drm_helper_mode_fill_fb_struct(dev, &vfbd->base.base, mode_cmd);
1322         vfbd->base.dmabuf = true;
1323         vfbd->buffer = vmw_dmabuf_reference(dmabuf);
1324         vfbd->base.user_handle = mode_cmd->handles[0];
1325         *out = &vfbd->base;
1326
1327         ret = drm_framebuffer_init(dev, &vfbd->base.base,
1328                                    &vmw_framebuffer_dmabuf_funcs);
1329         if (ret)
1330                 goto out_err2;
1331
1332         return 0;
1333
1334 out_err2:
1335         vmw_dmabuf_unreference(&dmabuf);
1336         kfree(vfbd);
1337 out_err1:
1338         return ret;
1339 }
1340
1341
1342 /**
1343  * vmw_kms_srf_ok - check if a surface can be created
1344  *
1345  * @width: requested width
1346  * @height: requested height
1347  *
1348  * Surfaces need to be less than texture size
1349  */
1350 static bool
1351 vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
1352 {
1353         if (width  > dev_priv->texture_max_width ||
1354             height > dev_priv->texture_max_height)
1355                 return false;
1356
1357         return true;
1358 }
1359
1360 /**
1361  * vmw_kms_new_framebuffer - Create a new framebuffer.
1362  *
1363  * @dev_priv: Pointer to device private struct.
1364  * @dmabuf: Pointer to dma buffer to wrap the kms framebuffer around.
1365  * Either @dmabuf or @surface must be NULL.
1366  * @surface: Pointer to a surface to wrap the kms framebuffer around.
1367  * Either @dmabuf or @surface must be NULL.
1368  * @only_2d: No presents will occur to this dma buffer based framebuffer. This
1369  * Helps the code to do some important optimizations.
1370  * @mode_cmd: Frame-buffer metadata.
1371  */
1372 struct vmw_framebuffer *
1373 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
1374                         struct vmw_dma_buffer *dmabuf,
1375                         struct vmw_surface *surface,
1376                         bool only_2d,
1377                         const struct drm_mode_fb_cmd2 *mode_cmd)
1378 {
1379         struct vmw_framebuffer *vfb = NULL;
1380         bool is_dmabuf_proxy = false;
1381         int ret;
1382
1383         /*
1384          * We cannot use the SurfaceDMA command in an non-accelerated VM,
1385          * therefore, wrap the DMA buf in a surface so we can use the
1386          * SurfaceCopy command.
1387          */
1388         if (vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)  &&
1389             dmabuf && only_2d &&
1390             mode_cmd->width > 64 &&  /* Don't create a proxy for cursor */
1391             dev_priv->active_display_unit == vmw_du_screen_target) {
1392                 ret = vmw_create_dmabuf_proxy(dev_priv->dev, mode_cmd,
1393                                               dmabuf, &surface);
1394                 if (ret)
1395                         return ERR_PTR(ret);
1396
1397                 is_dmabuf_proxy = true;
1398         }
1399
1400         /* Create the new framebuffer depending one what we have */
1401         if (surface) {
1402                 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
1403                                                       mode_cmd,
1404                                                       is_dmabuf_proxy);
1405
1406                 /*
1407                  * vmw_create_dmabuf_proxy() adds a reference that is no longer
1408                  * needed
1409                  */
1410                 if (is_dmabuf_proxy)
1411                         vmw_surface_unreference(&surface);
1412         } else if (dmabuf) {
1413                 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, dmabuf, &vfb,
1414                                                      mode_cmd);
1415         } else {
1416                 BUG();
1417         }
1418
1419         if (ret)
1420                 return ERR_PTR(ret);
1421
1422         vfb->pin = vmw_framebuffer_pin;
1423         vfb->unpin = vmw_framebuffer_unpin;
1424
1425         return vfb;
1426 }
1427
1428 /*
1429  * Generic Kernel modesetting functions
1430  */
1431
1432 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
1433                                                  struct drm_file *file_priv,
1434                                                  const struct drm_mode_fb_cmd2 *mode_cmd)
1435 {
1436         struct vmw_private *dev_priv = vmw_priv(dev);
1437         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1438         struct vmw_framebuffer *vfb = NULL;
1439         struct vmw_surface *surface = NULL;
1440         struct vmw_dma_buffer *bo = NULL;
1441         struct ttm_base_object *user_obj;
1442         int ret;
1443
1444         /**
1445          * This code should be conditioned on Screen Objects not being used.
1446          * If screen objects are used, we can allocate a GMR to hold the
1447          * requested framebuffer.
1448          */
1449
1450         if (!vmw_kms_validate_mode_vram(dev_priv,
1451                                         mode_cmd->pitches[0],
1452                                         mode_cmd->height)) {
1453                 DRM_ERROR("Requested mode exceed bounding box limit.\n");
1454                 return ERR_PTR(-ENOMEM);
1455         }
1456
1457         /*
1458          * Take a reference on the user object of the resource
1459          * backing the kms fb. This ensures that user-space handle
1460          * lookups on that resource will always work as long as
1461          * it's registered with a kms framebuffer. This is important,
1462          * since vmw_execbuf_process identifies resources in the
1463          * command stream using user-space handles.
1464          */
1465
1466         user_obj = ttm_base_object_lookup(tfile, mode_cmd->handles[0]);
1467         if (unlikely(user_obj == NULL)) {
1468                 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1469                 return ERR_PTR(-ENOENT);
1470         }
1471
1472         /**
1473          * End conditioned code.
1474          */
1475
1476         /* returns either a dmabuf or surface */
1477         ret = vmw_user_lookup_handle(dev_priv, tfile,
1478                                      mode_cmd->handles[0],
1479                                      &surface, &bo);
1480         if (ret)
1481                 goto err_out;
1482
1483
1484         if (!bo &&
1485             !vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
1486                 DRM_ERROR("Surface size cannot exceed %dx%d",
1487                         dev_priv->texture_max_width,
1488                         dev_priv->texture_max_height);
1489                 goto err_out;
1490         }
1491
1492
1493         vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1494                                       !(dev_priv->capabilities & SVGA_CAP_3D),
1495                                       mode_cmd);
1496         if (IS_ERR(vfb)) {
1497                 ret = PTR_ERR(vfb);
1498                 goto err_out;
1499         }
1500
1501 err_out:
1502         /* vmw_user_lookup_handle takes one ref so does new_fb */
1503         if (bo)
1504                 vmw_dmabuf_unreference(&bo);
1505         if (surface)
1506                 vmw_surface_unreference(&surface);
1507
1508         if (ret) {
1509                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1510                 ttm_base_object_unref(&user_obj);
1511                 return ERR_PTR(ret);
1512         } else
1513                 vfb->user_obj = user_obj;
1514
1515         return &vfb->base;
1516 }
1517
1518
1519
1520 /**
1521  * vmw_kms_atomic_check_modeset- validate state object for modeset changes
1522  *
1523  * @dev: DRM device
1524  * @state: the driver state object
1525  *
1526  * This is a simple wrapper around drm_atomic_helper_check_modeset() for
1527  * us to assign a value to mode->crtc_clock so that
1528  * drm_calc_timestamping_constants() won't throw an error message
1529  *
1530  * RETURNS
1531  * Zero for success or -errno
1532  */
1533 static int
1534 vmw_kms_atomic_check_modeset(struct drm_device *dev,
1535                              struct drm_atomic_state *state)
1536 {
1537         struct drm_crtc_state *crtc_state;
1538         struct drm_crtc *crtc;
1539         struct vmw_private *dev_priv = vmw_priv(dev);
1540         int i;
1541
1542         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1543                 unsigned long requested_bb_mem = 0;
1544
1545                 if (dev_priv->active_display_unit == vmw_du_screen_target) {
1546                         if (crtc->primary->fb) {
1547                                 int cpp = crtc->primary->fb->pitches[0] /
1548                                           crtc->primary->fb->width;
1549
1550                                 requested_bb_mem += crtc->mode.hdisplay * cpp *
1551                                                     crtc->mode.vdisplay;
1552                         }
1553
1554                         if (requested_bb_mem > dev_priv->prim_bb_mem)
1555                                 return -EINVAL;
1556                 }
1557         }
1558
1559         return drm_atomic_helper_check(dev, state);
1560 }
1561
1562
1563 /**
1564  * vmw_kms_atomic_commit - Perform an atomic state commit
1565  *
1566  * @dev: DRM device
1567  * @state: the driver state object
1568  * @nonblock: Whether nonblocking behaviour is requested
1569  *
1570  * This is a simple wrapper around drm_atomic_helper_commit() for
1571  * us to clear the nonblocking value.
1572  *
1573  * Nonblocking commits currently cause synchronization issues
1574  * for vmwgfx.
1575  *
1576  * RETURNS
1577  * Zero for success or negative error code on failure.
1578  */
1579 int vmw_kms_atomic_commit(struct drm_device *dev,
1580                           struct drm_atomic_state *state,
1581                           bool nonblock)
1582 {
1583         return drm_atomic_helper_commit(dev, state, false);
1584 }
1585
1586
1587 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1588         .fb_create = vmw_kms_fb_create,
1589         .atomic_check = vmw_kms_atomic_check_modeset,
1590         .atomic_commit = vmw_kms_atomic_commit,
1591 };
1592
1593 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1594                                    struct drm_file *file_priv,
1595                                    struct vmw_framebuffer *vfb,
1596                                    struct vmw_surface *surface,
1597                                    uint32_t sid,
1598                                    int32_t destX, int32_t destY,
1599                                    struct drm_vmw_rect *clips,
1600                                    uint32_t num_clips)
1601 {
1602         return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1603                                             &surface->res, destX, destY,
1604                                             num_clips, 1, NULL);
1605 }
1606
1607
1608 int vmw_kms_present(struct vmw_private *dev_priv,
1609                     struct drm_file *file_priv,
1610                     struct vmw_framebuffer *vfb,
1611                     struct vmw_surface *surface,
1612                     uint32_t sid,
1613                     int32_t destX, int32_t destY,
1614                     struct drm_vmw_rect *clips,
1615                     uint32_t num_clips)
1616 {
1617         int ret;
1618
1619         switch (dev_priv->active_display_unit) {
1620         case vmw_du_screen_target:
1621                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1622                                                  &surface->res, destX, destY,
1623                                                  num_clips, 1, NULL);
1624                 break;
1625         case vmw_du_screen_object:
1626                 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1627                                               sid, destX, destY, clips,
1628                                               num_clips);
1629                 break;
1630         default:
1631                 WARN_ONCE(true,
1632                           "Present called with invalid display system.\n");
1633                 ret = -ENOSYS;
1634                 break;
1635         }
1636         if (ret)
1637                 return ret;
1638
1639         vmw_fifo_flush(dev_priv, false);
1640
1641         return 0;
1642 }
1643
1644 static void
1645 vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
1646 {
1647         if (dev_priv->hotplug_mode_update_property)
1648                 return;
1649
1650         dev_priv->hotplug_mode_update_property =
1651                 drm_property_create_range(dev_priv->dev,
1652                                           DRM_MODE_PROP_IMMUTABLE,
1653                                           "hotplug_mode_update", 0, 1);
1654
1655         if (!dev_priv->hotplug_mode_update_property)
1656                 return;
1657
1658 }
1659
1660 int vmw_kms_init(struct vmw_private *dev_priv)
1661 {
1662         struct drm_device *dev = dev_priv->dev;
1663         int ret;
1664
1665         drm_mode_config_init(dev);
1666         dev->mode_config.funcs = &vmw_kms_funcs;
1667         dev->mode_config.min_width = 1;
1668         dev->mode_config.min_height = 1;
1669         dev->mode_config.max_width = dev_priv->texture_max_width;
1670         dev->mode_config.max_height = dev_priv->texture_max_height;
1671
1672         drm_mode_create_suggested_offset_properties(dev);
1673         vmw_kms_create_hotplug_mode_update_property(dev_priv);
1674
1675         ret = vmw_kms_stdu_init_display(dev_priv);
1676         if (ret) {
1677                 ret = vmw_kms_sou_init_display(dev_priv);
1678                 if (ret) /* Fallback */
1679                         ret = vmw_kms_ldu_init_display(dev_priv);
1680         }
1681
1682         return ret;
1683 }
1684
1685 int vmw_kms_close(struct vmw_private *dev_priv)
1686 {
1687         int ret = 0;
1688
1689         /*
1690          * Docs says we should take the lock before calling this function
1691          * but since it destroys encoders and our destructor calls
1692          * drm_encoder_cleanup which takes the lock we deadlock.
1693          */
1694         drm_mode_config_cleanup(dev_priv->dev);
1695         if (dev_priv->active_display_unit == vmw_du_legacy)
1696                 ret = vmw_kms_ldu_close_display(dev_priv);
1697
1698         return ret;
1699 }
1700
1701 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1702                                 struct drm_file *file_priv)
1703 {
1704         struct drm_vmw_cursor_bypass_arg *arg = data;
1705         struct vmw_display_unit *du;
1706         struct drm_crtc *crtc;
1707         int ret = 0;
1708
1709
1710         mutex_lock(&dev->mode_config.mutex);
1711         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1712
1713                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1714                         du = vmw_crtc_to_du(crtc);
1715                         du->hotspot_x = arg->xhot;
1716                         du->hotspot_y = arg->yhot;
1717                 }
1718
1719                 mutex_unlock(&dev->mode_config.mutex);
1720                 return 0;
1721         }
1722
1723         crtc = drm_crtc_find(dev, file_priv, arg->crtc_id);
1724         if (!crtc) {
1725                 ret = -ENOENT;
1726                 goto out;
1727         }
1728
1729         du = vmw_crtc_to_du(crtc);
1730
1731         du->hotspot_x = arg->xhot;
1732         du->hotspot_y = arg->yhot;
1733
1734 out:
1735         mutex_unlock(&dev->mode_config.mutex);
1736
1737         return ret;
1738 }
1739
1740 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1741                         unsigned width, unsigned height, unsigned pitch,
1742                         unsigned bpp, unsigned depth)
1743 {
1744         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1745                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1746         else if (vmw_fifo_have_pitchlock(vmw_priv))
1747                 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1748                                SVGA_FIFO_PITCHLOCK);
1749         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1750         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1751         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1752
1753         if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1754                 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1755                           depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1756                 return -EINVAL;
1757         }
1758
1759         return 0;
1760 }
1761
1762 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1763 {
1764         struct vmw_vga_topology_state *save;
1765         uint32_t i;
1766
1767         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1768         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1769         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1770         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1771                 vmw_priv->vga_pitchlock =
1772                   vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1773         else if (vmw_fifo_have_pitchlock(vmw_priv))
1774                 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1775                                                         SVGA_FIFO_PITCHLOCK);
1776
1777         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1778                 return 0;
1779
1780         vmw_priv->num_displays = vmw_read(vmw_priv,
1781                                           SVGA_REG_NUM_GUEST_DISPLAYS);
1782
1783         if (vmw_priv->num_displays == 0)
1784                 vmw_priv->num_displays = 1;
1785
1786         for (i = 0; i < vmw_priv->num_displays; ++i) {
1787                 save = &vmw_priv->vga_save[i];
1788                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1789                 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1790                 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1791                 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1792                 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1793                 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1794                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1795                 if (i == 0 && vmw_priv->num_displays == 1 &&
1796                     save->width == 0 && save->height == 0) {
1797
1798                         /*
1799                          * It should be fairly safe to assume that these
1800                          * values are uninitialized.
1801                          */
1802
1803                         save->width = vmw_priv->vga_width - save->pos_x;
1804                         save->height = vmw_priv->vga_height - save->pos_y;
1805                 }
1806         }
1807
1808         return 0;
1809 }
1810
1811 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1812 {
1813         struct vmw_vga_topology_state *save;
1814         uint32_t i;
1815
1816         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1817         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1818         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1819         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1820                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1821                           vmw_priv->vga_pitchlock);
1822         else if (vmw_fifo_have_pitchlock(vmw_priv))
1823                 vmw_mmio_write(vmw_priv->vga_pitchlock,
1824                                vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1825
1826         if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1827                 return 0;
1828
1829         for (i = 0; i < vmw_priv->num_displays; ++i) {
1830                 save = &vmw_priv->vga_save[i];
1831                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1832                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1833                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1834                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1835                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1836                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1837                 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1838         }
1839
1840         return 0;
1841 }
1842
1843 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1844                                 uint32_t pitch,
1845                                 uint32_t height)
1846 {
1847         return ((u64) pitch * (u64) height) < (u64)
1848                 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1849                  dev_priv->prim_bb_mem : dev_priv->vram_size);
1850 }
1851
1852
1853 /**
1854  * Function called by DRM code called with vbl_lock held.
1855  */
1856 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
1857 {
1858         return 0;
1859 }
1860
1861 /**
1862  * Function called by DRM code called with vbl_lock held.
1863  */
1864 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
1865 {
1866         return -ENOSYS;
1867 }
1868
1869 /**
1870  * Function called by DRM code called with vbl_lock held.
1871  */
1872 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
1873 {
1874 }
1875
1876
1877 /*
1878  * Small shared kms functions.
1879  */
1880
1881 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1882                          struct drm_vmw_rect *rects)
1883 {
1884         struct drm_device *dev = dev_priv->dev;
1885         struct vmw_display_unit *du;
1886         struct drm_connector *con;
1887
1888         mutex_lock(&dev->mode_config.mutex);
1889
1890 #if 0
1891         {
1892                 unsigned int i;
1893
1894                 DRM_INFO("%s: new layout ", __func__);
1895                 for (i = 0; i < num; i++)
1896                         DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1897                                  rects[i].w, rects[i].h);
1898                 DRM_INFO("\n");
1899         }
1900 #endif
1901
1902         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1903                 du = vmw_connector_to_du(con);
1904                 if (num > du->unit) {
1905                         du->pref_width = rects[du->unit].w;
1906                         du->pref_height = rects[du->unit].h;
1907                         du->pref_active = true;
1908                         du->gui_x = rects[du->unit].x;
1909                         du->gui_y = rects[du->unit].y;
1910                         drm_object_property_set_value
1911                           (&con->base, dev->mode_config.suggested_x_property,
1912                            du->gui_x);
1913                         drm_object_property_set_value
1914                           (&con->base, dev->mode_config.suggested_y_property,
1915                            du->gui_y);
1916                 } else {
1917                         du->pref_width = 800;
1918                         du->pref_height = 600;
1919                         du->pref_active = false;
1920                         drm_object_property_set_value
1921                           (&con->base, dev->mode_config.suggested_x_property,
1922                            0);
1923                         drm_object_property_set_value
1924                           (&con->base, dev->mode_config.suggested_y_property,
1925                            0);
1926                 }
1927                 con->status = vmw_du_connector_detect(con, true);
1928         }
1929
1930         mutex_unlock(&dev->mode_config.mutex);
1931         drm_sysfs_hotplug_event(dev);
1932
1933         return 0;
1934 }
1935
1936 int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1937                           u16 *r, u16 *g, u16 *b,
1938                           uint32_t size,
1939                           struct drm_modeset_acquire_ctx *ctx)
1940 {
1941         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1942         int i;
1943
1944         for (i = 0; i < size; i++) {
1945                 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1946                           r[i], g[i], b[i]);
1947                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1948                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1949                 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1950         }
1951
1952         return 0;
1953 }
1954
1955 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1956 {
1957         return 0;
1958 }
1959
1960 enum drm_connector_status
1961 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1962 {
1963         uint32_t num_displays;
1964         struct drm_device *dev = connector->dev;
1965         struct vmw_private *dev_priv = vmw_priv(dev);
1966         struct vmw_display_unit *du = vmw_connector_to_du(connector);
1967
1968         num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1969
1970         return ((vmw_connector_to_du(connector)->unit < num_displays &&
1971                  du->pref_active) ?
1972                 connector_status_connected : connector_status_disconnected);
1973 }
1974
1975 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1976         /* 640x480@60Hz */
1977         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1978                    752, 800, 0, 480, 489, 492, 525, 0,
1979                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1980         /* 800x600@60Hz */
1981         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1982                    968, 1056, 0, 600, 601, 605, 628, 0,
1983                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1984         /* 1024x768@60Hz */
1985         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1986                    1184, 1344, 0, 768, 771, 777, 806, 0,
1987                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1988         /* 1152x864@75Hz */
1989         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1990                    1344, 1600, 0, 864, 865, 868, 900, 0,
1991                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1992         /* 1280x768@60Hz */
1993         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1994                    1472, 1664, 0, 768, 771, 778, 798, 0,
1995                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1996         /* 1280x800@60Hz */
1997         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1998                    1480, 1680, 0, 800, 803, 809, 831, 0,
1999                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2000         /* 1280x960@60Hz */
2001         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
2002                    1488, 1800, 0, 960, 961, 964, 1000, 0,
2003                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2004         /* 1280x1024@60Hz */
2005         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
2006                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
2007                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2008         /* 1360x768@60Hz */
2009         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
2010                    1536, 1792, 0, 768, 771, 777, 795, 0,
2011                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2012         /* 1440x1050@60Hz */
2013         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
2014                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
2015                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2016         /* 1440x900@60Hz */
2017         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
2018                    1672, 1904, 0, 900, 903, 909, 934, 0,
2019                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2020         /* 1600x1200@60Hz */
2021         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
2022                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
2023                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2024         /* 1680x1050@60Hz */
2025         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
2026                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
2027                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2028         /* 1792x1344@60Hz */
2029         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2030                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
2031                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2032         /* 1853x1392@60Hz */
2033         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2034                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
2035                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2036         /* 1920x1200@60Hz */
2037         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2038                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
2039                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2040         /* 1920x1440@60Hz */
2041         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2042                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
2043                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2044         /* 2560x1600@60Hz */
2045         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
2046                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
2047                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2048         /* Terminate */
2049         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
2050 };
2051
2052 /**
2053  * vmw_guess_mode_timing - Provide fake timings for a
2054  * 60Hz vrefresh mode.
2055  *
2056  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
2057  * members filled in.
2058  */
2059 void vmw_guess_mode_timing(struct drm_display_mode *mode)
2060 {
2061         mode->hsync_start = mode->hdisplay + 50;
2062         mode->hsync_end = mode->hsync_start + 50;
2063         mode->htotal = mode->hsync_end + 50;
2064
2065         mode->vsync_start = mode->vdisplay + 50;
2066         mode->vsync_end = mode->vsync_start + 50;
2067         mode->vtotal = mode->vsync_end + 50;
2068
2069         mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
2070         mode->vrefresh = drm_mode_vrefresh(mode);
2071 }
2072
2073
2074 int vmw_du_connector_fill_modes(struct drm_connector *connector,
2075                                 uint32_t max_width, uint32_t max_height)
2076 {
2077         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2078         struct drm_device *dev = connector->dev;
2079         struct vmw_private *dev_priv = vmw_priv(dev);
2080         struct drm_display_mode *mode = NULL;
2081         struct drm_display_mode *bmode;
2082         struct drm_display_mode prefmode = { DRM_MODE("preferred",
2083                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
2084                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2085                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
2086         };
2087         int i;
2088         u32 assumed_bpp = 4;
2089
2090         if (dev_priv->assume_16bpp)
2091                 assumed_bpp = 2;
2092
2093         if (dev_priv->active_display_unit == vmw_du_screen_target) {
2094                 max_width  = min(max_width,  dev_priv->stdu_max_width);
2095                 max_width  = min(max_width,  dev_priv->texture_max_width);
2096
2097                 max_height = min(max_height, dev_priv->stdu_max_height);
2098                 max_height = min(max_height, dev_priv->texture_max_height);
2099         }
2100
2101         /* Add preferred mode */
2102         mode = drm_mode_duplicate(dev, &prefmode);
2103         if (!mode)
2104                 return 0;
2105         mode->hdisplay = du->pref_width;
2106         mode->vdisplay = du->pref_height;
2107         vmw_guess_mode_timing(mode);
2108
2109         if (vmw_kms_validate_mode_vram(dev_priv,
2110                                         mode->hdisplay * assumed_bpp,
2111                                         mode->vdisplay)) {
2112                 drm_mode_probed_add(connector, mode);
2113         } else {
2114                 drm_mode_destroy(dev, mode);
2115                 mode = NULL;
2116         }
2117
2118         if (du->pref_mode) {
2119                 list_del_init(&du->pref_mode->head);
2120                 drm_mode_destroy(dev, du->pref_mode);
2121         }
2122
2123         /* mode might be null here, this is intended */
2124         du->pref_mode = mode;
2125
2126         for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
2127                 bmode = &vmw_kms_connector_builtin[i];
2128                 if (bmode->hdisplay > max_width ||
2129                     bmode->vdisplay > max_height)
2130                         continue;
2131
2132                 if (!vmw_kms_validate_mode_vram(dev_priv,
2133                                                 bmode->hdisplay * assumed_bpp,
2134                                                 bmode->vdisplay))
2135                         continue;
2136
2137                 mode = drm_mode_duplicate(dev, bmode);
2138                 if (!mode)
2139                         return 0;
2140                 mode->vrefresh = drm_mode_vrefresh(mode);
2141
2142                 drm_mode_probed_add(connector, mode);
2143         }
2144
2145         drm_mode_connector_list_update(connector);
2146         /* Move the prefered mode first, help apps pick the right mode. */
2147         drm_mode_sort(&connector->modes);
2148
2149         return 1;
2150 }
2151
2152 int vmw_du_connector_set_property(struct drm_connector *connector,
2153                                   struct drm_property *property,
2154                                   uint64_t val)
2155 {
2156         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2157         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2158
2159         if (property == dev_priv->implicit_placement_property)
2160                 du->is_implicit = val;
2161
2162         return 0;
2163 }
2164
2165
2166
2167 /**
2168  * vmw_du_connector_atomic_set_property - Atomic version of get property
2169  *
2170  * @crtc - crtc the property is associated with
2171  *
2172  * Returns:
2173  * Zero on success, negative errno on failure.
2174  */
2175 int
2176 vmw_du_connector_atomic_set_property(struct drm_connector *connector,
2177                                      struct drm_connector_state *state,
2178                                      struct drm_property *property,
2179                                      uint64_t val)
2180 {
2181         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2182         struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
2183         struct vmw_display_unit *du = vmw_connector_to_du(connector);
2184
2185
2186         if (property == dev_priv->implicit_placement_property) {
2187                 vcs->is_implicit = val;
2188
2189                 /*
2190                  * We should really be doing a drm_atomic_commit() to
2191                  * commit the new state, but since this doesn't cause
2192                  * an immedate state change, this is probably ok
2193                  */
2194                 du->is_implicit = vcs->is_implicit;
2195         } else {
2196                 return -EINVAL;
2197         }
2198
2199         return 0;
2200 }
2201
2202
2203 /**
2204  * vmw_du_connector_atomic_get_property - Atomic version of get property
2205  *
2206  * @connector - connector the property is associated with
2207  *
2208  * Returns:
2209  * Zero on success, negative errno on failure.
2210  */
2211 int
2212 vmw_du_connector_atomic_get_property(struct drm_connector *connector,
2213                                      const struct drm_connector_state *state,
2214                                      struct drm_property *property,
2215                                      uint64_t *val)
2216 {
2217         struct vmw_private *dev_priv = vmw_priv(connector->dev);
2218         struct vmw_connector_state *vcs = vmw_connector_state_to_vcs(state);
2219
2220         if (property == dev_priv->implicit_placement_property)
2221                 *val = vcs->is_implicit;
2222         else {
2223                 DRM_ERROR("Invalid Property %s\n", property->name);
2224                 return -EINVAL;
2225         }
2226
2227         return 0;
2228 }
2229
2230
2231 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
2232                                 struct drm_file *file_priv)
2233 {
2234         struct vmw_private *dev_priv = vmw_priv(dev);
2235         struct drm_vmw_update_layout_arg *arg =
2236                 (struct drm_vmw_update_layout_arg *)data;
2237         void __user *user_rects;
2238         struct drm_vmw_rect *rects;
2239         unsigned rects_size;
2240         int ret;
2241         int i;
2242         u64 total_pixels = 0;
2243         struct drm_mode_config *mode_config = &dev->mode_config;
2244         struct drm_vmw_rect bounding_box = {0};
2245
2246         if (!arg->num_outputs) {
2247                 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
2248                 vmw_du_update_layout(dev_priv, 1, &def_rect);
2249                 return 0;
2250         }
2251
2252         rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
2253         rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
2254                         GFP_KERNEL);
2255         if (unlikely(!rects))
2256                 return -ENOMEM;
2257
2258         user_rects = (void __user *)(unsigned long)arg->rects;
2259         ret = copy_from_user(rects, user_rects, rects_size);
2260         if (unlikely(ret != 0)) {
2261                 DRM_ERROR("Failed to get rects.\n");
2262                 ret = -EFAULT;
2263                 goto out_free;
2264         }
2265
2266         for (i = 0; i < arg->num_outputs; ++i) {
2267                 if (rects[i].x < 0 ||
2268                     rects[i].y < 0 ||
2269                     rects[i].x + rects[i].w > mode_config->max_width ||
2270                     rects[i].y + rects[i].h > mode_config->max_height) {
2271                         DRM_ERROR("Invalid GUI layout.\n");
2272                         ret = -EINVAL;
2273                         goto out_free;
2274                 }
2275
2276                 /*
2277                  * bounding_box.w and bunding_box.h are used as
2278                  * lower-right coordinates
2279                  */
2280                 if (rects[i].x + rects[i].w > bounding_box.w)
2281                         bounding_box.w = rects[i].x + rects[i].w;
2282
2283                 if (rects[i].y + rects[i].h > bounding_box.h)
2284                         bounding_box.h = rects[i].y + rects[i].h;
2285
2286                 total_pixels += (u64) rects[i].w * (u64) rects[i].h;
2287         }
2288
2289         if (dev_priv->active_display_unit == vmw_du_screen_target) {
2290                 /*
2291                  * For Screen Targets, the limits for a toplogy are:
2292                  *      1. Bounding box (assuming 32bpp) must be < prim_bb_mem
2293                  *      2. Total pixels (assuming 32bpp) must be < prim_bb_mem
2294                  */
2295                 u64 bb_mem    = (u64) bounding_box.w * bounding_box.h * 4;
2296                 u64 pixel_mem = total_pixels * 4;
2297
2298                 if (bb_mem > dev_priv->prim_bb_mem) {
2299                         DRM_ERROR("Topology is beyond supported limits.\n");
2300                         ret = -EINVAL;
2301                         goto out_free;
2302                 }
2303
2304                 if (pixel_mem > dev_priv->prim_bb_mem) {
2305                         DRM_ERROR("Combined output size too large\n");
2306                         ret = -EINVAL;
2307                         goto out_free;
2308                 }
2309         }
2310
2311         vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
2312
2313 out_free:
2314         kfree(rects);
2315         return ret;
2316 }
2317
2318 /**
2319  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
2320  * on a set of cliprects and a set of display units.
2321  *
2322  * @dev_priv: Pointer to a device private structure.
2323  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
2324  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
2325  * Cliprects are given in framebuffer coordinates.
2326  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
2327  * be NULL. Cliprects are given in source coordinates.
2328  * @dest_x: X coordinate offset for the crtc / destination clip rects.
2329  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
2330  * @num_clips: Number of cliprects in the @clips or @vclips array.
2331  * @increment: Integer with which to increment the clip counter when looping.
2332  * Used to skip a predetermined number of clip rects.
2333  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
2334  */
2335 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
2336                          struct vmw_framebuffer *framebuffer,
2337                          const struct drm_clip_rect *clips,
2338                          const struct drm_vmw_rect *vclips,
2339                          s32 dest_x, s32 dest_y,
2340                          int num_clips,
2341                          int increment,
2342                          struct vmw_kms_dirty *dirty)
2343 {
2344         struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
2345         struct drm_crtc *crtc;
2346         u32 num_units = 0;
2347         u32 i, k;
2348
2349         dirty->dev_priv = dev_priv;
2350
2351         list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
2352                 if (crtc->primary->fb != &framebuffer->base)
2353                         continue;
2354                 units[num_units++] = vmw_crtc_to_du(crtc);
2355         }
2356
2357         for (k = 0; k < num_units; k++) {
2358                 struct vmw_display_unit *unit = units[k];
2359                 s32 crtc_x = unit->crtc.x;
2360                 s32 crtc_y = unit->crtc.y;
2361                 s32 crtc_width = unit->crtc.mode.hdisplay;
2362                 s32 crtc_height = unit->crtc.mode.vdisplay;
2363                 const struct drm_clip_rect *clips_ptr = clips;
2364                 const struct drm_vmw_rect *vclips_ptr = vclips;
2365
2366                 dirty->unit = unit;
2367                 if (dirty->fifo_reserve_size > 0) {
2368                         dirty->cmd = vmw_fifo_reserve(dev_priv,
2369                                                       dirty->fifo_reserve_size);
2370                         if (!dirty->cmd) {
2371                                 DRM_ERROR("Couldn't reserve fifo space "
2372                                           "for dirty blits.\n");
2373                                 return -ENOMEM;
2374                         }
2375                         memset(dirty->cmd, 0, dirty->fifo_reserve_size);
2376                 }
2377                 dirty->num_hits = 0;
2378                 for (i = 0; i < num_clips; i++, clips_ptr += increment,
2379                        vclips_ptr += increment) {
2380                         s32 clip_left;
2381                         s32 clip_top;
2382
2383                         /*
2384                          * Select clip array type. Note that integer type
2385                          * in @clips is unsigned short, whereas in @vclips
2386                          * it's 32-bit.
2387                          */
2388                         if (clips) {
2389                                 dirty->fb_x = (s32) clips_ptr->x1;
2390                                 dirty->fb_y = (s32) clips_ptr->y1;
2391                                 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
2392                                         crtc_x;
2393                                 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
2394                                         crtc_y;
2395                         } else {
2396                                 dirty->fb_x = vclips_ptr->x;
2397                                 dirty->fb_y = vclips_ptr->y;
2398                                 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
2399                                         dest_x - crtc_x;
2400                                 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
2401                                         dest_y - crtc_y;
2402                         }
2403
2404                         dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
2405                         dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
2406
2407                         /* Skip this clip if it's outside the crtc region */
2408                         if (dirty->unit_x1 >= crtc_width ||
2409                             dirty->unit_y1 >= crtc_height ||
2410                             dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
2411                                 continue;
2412
2413                         /* Clip right and bottom to crtc limits */
2414                         dirty->unit_x2 = min_t(s32, dirty->unit_x2,
2415                                                crtc_width);
2416                         dirty->unit_y2 = min_t(s32, dirty->unit_y2,
2417                                                crtc_height);
2418
2419                         /* Clip left and top to crtc limits */
2420                         clip_left = min_t(s32, dirty->unit_x1, 0);
2421                         clip_top = min_t(s32, dirty->unit_y1, 0);
2422                         dirty->unit_x1 -= clip_left;
2423                         dirty->unit_y1 -= clip_top;
2424                         dirty->fb_x -= clip_left;
2425                         dirty->fb_y -= clip_top;
2426
2427                         dirty->clip(dirty);
2428                 }
2429
2430                 dirty->fifo_commit(dirty);
2431         }
2432
2433         return 0;
2434 }
2435
2436 /**
2437  * vmw_kms_helper_buffer_prepare - Reserve and validate a buffer object before
2438  * command submission.
2439  *
2440  * @dev_priv. Pointer to a device private structure.
2441  * @buf: The buffer object
2442  * @interruptible: Whether to perform waits as interruptible.
2443  * @validate_as_mob: Whether the buffer should be validated as a MOB. If false,
2444  * The buffer will be validated as a GMR. Already pinned buffers will not be
2445  * validated.
2446  *
2447  * Returns 0 on success, negative error code on failure, -ERESTARTSYS if
2448  * interrupted by a signal.
2449  */
2450 int vmw_kms_helper_buffer_prepare(struct vmw_private *dev_priv,
2451                                   struct vmw_dma_buffer *buf,
2452                                   bool interruptible,
2453                                   bool validate_as_mob)
2454 {
2455         struct ttm_buffer_object *bo = &buf->base;
2456         int ret;
2457
2458         ttm_bo_reserve(bo, false, false, NULL);
2459         ret = vmw_validate_single_buffer(dev_priv, bo, interruptible,
2460                                          validate_as_mob);
2461         if (ret)
2462                 ttm_bo_unreserve(bo);
2463
2464         return ret;
2465 }
2466
2467 /**
2468  * vmw_kms_helper_buffer_revert - Undo the actions of
2469  * vmw_kms_helper_buffer_prepare.
2470  *
2471  * @res: Pointer to the buffer object.
2472  *
2473  * Helper to be used if an error forces the caller to undo the actions of
2474  * vmw_kms_helper_buffer_prepare.
2475  */
2476 void vmw_kms_helper_buffer_revert(struct vmw_dma_buffer *buf)
2477 {
2478         if (buf)
2479                 ttm_bo_unreserve(&buf->base);
2480 }
2481
2482 /**
2483  * vmw_kms_helper_buffer_finish - Unreserve and fence a buffer object after
2484  * kms command submission.
2485  *
2486  * @dev_priv: Pointer to a device private structure.
2487  * @file_priv: Pointer to a struct drm_file representing the caller's
2488  * connection. Must be set to NULL if @user_fence_rep is NULL, and conversely
2489  * if non-NULL, @user_fence_rep must be non-NULL.
2490  * @buf: The buffer object.
2491  * @out_fence:  Optional pointer to a fence pointer. If non-NULL, a
2492  * ref-counted fence pointer is returned here.
2493  * @user_fence_rep: Optional pointer to a user-space provided struct
2494  * drm_vmw_fence_rep. If provided, @file_priv must also be provided and the
2495  * function copies fence data to user-space in a fail-safe manner.
2496  */
2497 void vmw_kms_helper_buffer_finish(struct vmw_private *dev_priv,
2498                                   struct drm_file *file_priv,
2499                                   struct vmw_dma_buffer *buf,
2500                                   struct vmw_fence_obj **out_fence,
2501                                   struct drm_vmw_fence_rep __user *
2502                                   user_fence_rep)
2503 {
2504         struct vmw_fence_obj *fence;
2505         uint32_t handle;
2506         int ret;
2507
2508         ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
2509                                          file_priv ? &handle : NULL);
2510         if (buf)
2511                 vmw_fence_single_bo(&buf->base, fence);
2512         if (file_priv)
2513                 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
2514                                             ret, user_fence_rep, fence,
2515                                             handle, -1, NULL);
2516         if (out_fence)
2517                 *out_fence = fence;
2518         else
2519                 vmw_fence_obj_unreference(&fence);
2520
2521         vmw_kms_helper_buffer_revert(buf);
2522 }
2523
2524
2525 /**
2526  * vmw_kms_helper_resource_revert - Undo the actions of
2527  * vmw_kms_helper_resource_prepare.
2528  *
2529  * @res: Pointer to the resource. Typically a surface.
2530  *
2531  * Helper to be used if an error forces the caller to undo the actions of
2532  * vmw_kms_helper_resource_prepare.
2533  */
2534 void vmw_kms_helper_resource_revert(struct vmw_resource *res)
2535 {
2536         vmw_kms_helper_buffer_revert(res->backup);
2537         vmw_resource_unreserve(res, false, NULL, 0);
2538         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2539 }
2540
2541 /**
2542  * vmw_kms_helper_resource_prepare - Reserve and validate a resource before
2543  * command submission.
2544  *
2545  * @res: Pointer to the resource. Typically a surface.
2546  * @interruptible: Whether to perform waits as interruptible.
2547  *
2548  * Reserves and validates also the backup buffer if a guest-backed resource.
2549  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
2550  * interrupted by a signal.
2551  */
2552 int vmw_kms_helper_resource_prepare(struct vmw_resource *res,
2553                                     bool interruptible)
2554 {
2555         int ret = 0;
2556
2557         if (interruptible)
2558                 ret = mutex_lock_interruptible(&res->dev_priv->cmdbuf_mutex);
2559         else
2560                 mutex_lock(&res->dev_priv->cmdbuf_mutex);
2561
2562         if (unlikely(ret != 0))
2563                 return -ERESTARTSYS;
2564
2565         ret = vmw_resource_reserve(res, interruptible, false);
2566         if (ret)
2567                 goto out_unlock;
2568
2569         if (res->backup) {
2570                 ret = vmw_kms_helper_buffer_prepare(res->dev_priv, res->backup,
2571                                                     interruptible,
2572                                                     res->dev_priv->has_mob);
2573                 if (ret)
2574                         goto out_unreserve;
2575         }
2576         ret = vmw_resource_validate(res);
2577         if (ret)
2578                 goto out_revert;
2579         return 0;
2580
2581 out_revert:
2582         vmw_kms_helper_buffer_revert(res->backup);
2583 out_unreserve:
2584         vmw_resource_unreserve(res, false, NULL, 0);
2585 out_unlock:
2586         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2587         return ret;
2588 }
2589
2590 /**
2591  * vmw_kms_helper_resource_finish - Unreserve and fence a resource after
2592  * kms command submission.
2593  *
2594  * @res: Pointer to the resource. Typically a surface.
2595  * @out_fence: Optional pointer to a fence pointer. If non-NULL, a
2596  * ref-counted fence pointer is returned here.
2597  */
2598 void vmw_kms_helper_resource_finish(struct vmw_resource *res,
2599                              struct vmw_fence_obj **out_fence)
2600 {
2601         if (res->backup || out_fence)
2602                 vmw_kms_helper_buffer_finish(res->dev_priv, NULL, res->backup,
2603                                              out_fence, NULL);
2604
2605         vmw_resource_unreserve(res, false, NULL, 0);
2606         mutex_unlock(&res->dev_priv->cmdbuf_mutex);
2607 }
2608
2609 /**
2610  * vmw_kms_update_proxy - Helper function to update a proxy surface from
2611  * its backing MOB.
2612  *
2613  * @res: Pointer to the surface resource
2614  * @clips: Clip rects in framebuffer (surface) space.
2615  * @num_clips: Number of clips in @clips.
2616  * @increment: Integer with which to increment the clip counter when looping.
2617  * Used to skip a predetermined number of clip rects.
2618  *
2619  * This function makes sure the proxy surface is updated from its backing MOB
2620  * using the region given by @clips. The surface resource @res and its backing
2621  * MOB needs to be reserved and validated on call.
2622  */
2623 int vmw_kms_update_proxy(struct vmw_resource *res,
2624                          const struct drm_clip_rect *clips,
2625                          unsigned num_clips,
2626                          int increment)
2627 {
2628         struct vmw_private *dev_priv = res->dev_priv;
2629         struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2630         struct {
2631                 SVGA3dCmdHeader header;
2632                 SVGA3dCmdUpdateGBImage body;
2633         } *cmd;
2634         SVGA3dBox *box;
2635         size_t copy_size = 0;
2636         int i;
2637
2638         if (!clips)
2639                 return 0;
2640
2641         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
2642         if (!cmd) {
2643                 DRM_ERROR("Couldn't reserve fifo space for proxy surface "
2644                           "update.\n");
2645                 return -ENOMEM;
2646         }
2647
2648         for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2649                 box = &cmd->body.box;
2650
2651                 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2652                 cmd->header.size = sizeof(cmd->body);
2653                 cmd->body.image.sid = res->id;
2654                 cmd->body.image.face = 0;
2655                 cmd->body.image.mipmap = 0;
2656
2657                 if (clips->x1 > size->width || clips->x2 > size->width ||
2658                     clips->y1 > size->height || clips->y2 > size->height) {
2659                         DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2660                         return -EINVAL;
2661                 }
2662
2663                 box->x = clips->x1;
2664                 box->y = clips->y1;
2665                 box->z = 0;
2666                 box->w = clips->x2 - clips->x1;
2667                 box->h = clips->y2 - clips->y1;
2668                 box->d = 1;
2669
2670                 copy_size += sizeof(*cmd);
2671         }
2672
2673         vmw_fifo_commit(dev_priv, copy_size);
2674
2675         return 0;
2676 }
2677
2678 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2679                             unsigned unit,
2680                             u32 max_width,
2681                             u32 max_height,
2682                             struct drm_connector **p_con,
2683                             struct drm_crtc **p_crtc,
2684                             struct drm_display_mode **p_mode)
2685 {
2686         struct drm_connector *con;
2687         struct vmw_display_unit *du;
2688         struct drm_display_mode *mode;
2689         int i = 0;
2690
2691         list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2692                             head) {
2693                 if (i == unit)
2694                         break;
2695
2696                 ++i;
2697         }
2698
2699         if (i != unit) {
2700                 DRM_ERROR("Could not find initial display unit.\n");
2701                 return -EINVAL;
2702         }
2703
2704         if (list_empty(&con->modes))
2705                 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2706
2707         if (list_empty(&con->modes)) {
2708                 DRM_ERROR("Could not find initial display mode.\n");
2709                 return -EINVAL;
2710         }
2711
2712         du = vmw_connector_to_du(con);
2713         *p_con = con;
2714         *p_crtc = &du->crtc;
2715
2716         list_for_each_entry(mode, &con->modes, head) {
2717                 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2718                         break;
2719         }
2720
2721         if (mode->type & DRM_MODE_TYPE_PREFERRED)
2722                 *p_mode = mode;
2723         else {
2724                 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2725                 *p_mode = list_first_entry(&con->modes,
2726                                            struct drm_display_mode,
2727                                            head);
2728         }
2729
2730         return 0;
2731 }
2732
2733 /**
2734  * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
2735  *
2736  * @dev_priv: Pointer to a device private struct.
2737  * @du: The display unit of the crtc.
2738  */
2739 void vmw_kms_del_active(struct vmw_private *dev_priv,
2740                         struct vmw_display_unit *du)
2741 {
2742         mutex_lock(&dev_priv->global_kms_state_mutex);
2743         if (du->active_implicit) {
2744                 if (--(dev_priv->num_implicit) == 0)
2745                         dev_priv->implicit_fb = NULL;
2746                 du->active_implicit = false;
2747         }
2748         mutex_unlock(&dev_priv->global_kms_state_mutex);
2749 }
2750
2751 /**
2752  * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
2753  *
2754  * @vmw_priv: Pointer to a device private struct.
2755  * @du: The display unit of the crtc.
2756  * @vfb: The implicit framebuffer
2757  *
2758  * Registers a binding to an implicit framebuffer.
2759  */
2760 void vmw_kms_add_active(struct vmw_private *dev_priv,
2761                         struct vmw_display_unit *du,
2762                         struct vmw_framebuffer *vfb)
2763 {
2764         mutex_lock(&dev_priv->global_kms_state_mutex);
2765         WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
2766
2767         if (!du->active_implicit && du->is_implicit) {
2768                 dev_priv->implicit_fb = vfb;
2769                 du->active_implicit = true;
2770                 dev_priv->num_implicit++;
2771         }
2772         mutex_unlock(&dev_priv->global_kms_state_mutex);
2773 }
2774
2775 /**
2776  * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
2777  *
2778  * @dev_priv: Pointer to device-private struct.
2779  * @crtc: The crtc we want to flip.
2780  *
2781  * Returns true or false depending whether it's OK to flip this crtc
2782  * based on the criterion that we must not have more than one implicit
2783  * frame-buffer at any one time.
2784  */
2785 bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
2786                             struct drm_crtc *crtc)
2787 {
2788         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2789         bool ret;
2790
2791         mutex_lock(&dev_priv->global_kms_state_mutex);
2792         ret = !du->is_implicit || dev_priv->num_implicit == 1;
2793         mutex_unlock(&dev_priv->global_kms_state_mutex);
2794
2795         return ret;
2796 }
2797
2798 /**
2799  * vmw_kms_update_implicit_fb - Update the implicit fb.
2800  *
2801  * @dev_priv: Pointer to device-private struct.
2802  * @crtc: The crtc the new implicit frame-buffer is bound to.
2803  */
2804 void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
2805                                 struct drm_crtc *crtc)
2806 {
2807         struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
2808         struct vmw_framebuffer *vfb;
2809
2810         mutex_lock(&dev_priv->global_kms_state_mutex);
2811
2812         if (!du->is_implicit)
2813                 goto out_unlock;
2814
2815         vfb = vmw_framebuffer_to_vfb(crtc->primary->fb);
2816         WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
2817                      dev_priv->implicit_fb != vfb);
2818
2819         dev_priv->implicit_fb = vfb;
2820 out_unlock:
2821         mutex_unlock(&dev_priv->global_kms_state_mutex);
2822 }
2823
2824 /**
2825  * vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
2826  * property.
2827  *
2828  * @dev_priv: Pointer to a device private struct.
2829  * @immutable: Whether the property is immutable.
2830  *
2831  * Sets up the implicit placement property unless it's already set up.
2832  */
2833 void
2834 vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
2835                                            bool immutable)
2836 {
2837         if (dev_priv->implicit_placement_property)
2838                 return;
2839
2840         dev_priv->implicit_placement_property =
2841                 drm_property_create_range(dev_priv->dev,
2842                                           immutable ?
2843                                           DRM_MODE_PROP_IMMUTABLE : 0,
2844                                           "implicit_placement", 0, 1);
2845
2846 }
2847
2848
2849 /**
2850  * vmw_kms_set_config - Wrapper around drm_atomic_helper_set_config
2851  *
2852  * @set: The configuration to set.
2853  *
2854  * The vmwgfx Xorg driver doesn't assign the mode::type member, which
2855  * when drm_mode_set_crtcinfo is called as part of the configuration setting
2856  * causes it to return incorrect crtc dimensions causing severe problems in
2857  * the vmwgfx modesetting. So explicitly clear that member before calling
2858  * into drm_atomic_helper_set_config.
2859  */
2860 int vmw_kms_set_config(struct drm_mode_set *set,
2861                        struct drm_modeset_acquire_ctx *ctx)
2862 {
2863         if (set && set->mode)
2864                 set->mode->type = 0;
2865
2866         return drm_atomic_helper_set_config(set, ctx);
2867 }