drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

   1 /******************************************************************************
   2  *
   3  * COPYRIGHT © 2014-2015 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 "device_include/svga3d_surfacedefs.h"
  30 #include <drm/drm_plane_helper.h>
  31 #include <drm/drm_atomic.h>
  32 #include <drm/drm_atomic_helper.h>
  33
  34
  35 #define vmw_crtc_to_stdu(x) \
  36         container_of(x, struct vmw_screen_target_display_unit, base.crtc)
  37 #define vmw_encoder_to_stdu(x) \
  38         container_of(x, struct vmw_screen_target_display_unit, base.encoder)
  39 #define vmw_connector_to_stdu(x) \
  40         container_of(x, struct vmw_screen_target_display_unit, base.connector)
  41
  42
  43
  44 enum stdu_content_type {
  45         SAME_AS_DISPLAY = 0,
  46         SEPARATE_SURFACE,
  47         SEPARATE_DMA
  48 };
  49
  50 /**
  51  * struct vmw_stdu_dirty - closure structure for the update functions
  52  *
  53  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
  54  * @transfer: Transfer direction for DMA command.
  55  * @left: Left side of bounding box.
  56  * @right: Right side of bounding box.
  57  * @top: Top side of bounding box.
  58  * @bottom: Bottom side of bounding box.
  59  * @fb_left: Left side of the framebuffer/content bounding box
  60  * @fb_top: Top of the framebuffer/content bounding box
  61  * @buf: DMA buffer when DMA-ing between buffer and screen targets.
  62  * @sid: Surface ID when copying between surface and screen targets.
  63  */
  64 struct vmw_stdu_dirty {
  65         struct vmw_kms_dirty base;
  66         SVGA3dTransferType  transfer;
  67         s32 left, right, top, bottom;
  68         s32 fb_left, fb_top;
  69         u32 pitch;
  70         union {
  71                 struct vmw_dma_buffer *buf;
  72                 u32 sid;
  73         };
  74 };
  75
  76 /*
  77  * SVGA commands that are used by this code. Please see the device headers
  78  * for explanation.
  79  */
  80 struct vmw_stdu_update {
  81         SVGA3dCmdHeader header;
  82         SVGA3dCmdUpdateGBScreenTarget body;
  83 };
  84
  85 struct vmw_stdu_dma {
  86         SVGA3dCmdHeader     header;
  87         SVGA3dCmdSurfaceDMA body;
  88 };
  89
  90 struct vmw_stdu_surface_copy {
  91         SVGA3dCmdHeader      header;
  92         SVGA3dCmdSurfaceCopy body;
  93 };
  94
  95
  96 /**
  97  * struct vmw_screen_target_display_unit
  98  *
  99  * @base: VMW specific DU structure
 100  * @display_srf: surface to be displayed.  The dimension of this will always
 101  *               match the display mode.  If the display mode matches
 102  *               content_vfbs dimensions, then this is a pointer into the
 103  *               corresponding field in content_vfbs.  If not, then this
 104  *               is a separate buffer to which content_vfbs will blit to.
 105  * @content_type:  content_fb type
 106  * @defined:  true if the current display unit has been initialized
 107  */
 108 struct vmw_screen_target_display_unit {
 109         struct vmw_display_unit base;
 110         const struct vmw_surface *display_srf;
 111         enum stdu_content_type content_fb_type;
 112         s32 display_width, display_height;
 113
 114         bool defined;
 115
 116         /* For CPU Blit */
 117         struct ttm_bo_kmap_obj host_map;
 118         unsigned int cpp;
 119 };
 120
 121
 122
 123 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
 124
 125
 126
 127 /******************************************************************************
 128  * Screen Target Display Unit CRTC Functions
 129  *****************************************************************************/
 130
 131
 132 /**
 133  * vmw_stdu_crtc_destroy - cleans up the STDU
 134  *
 135  * @crtc: used to get a reference to the containing STDU
 136  */
 137 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
 138 {
 139         vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
 140 }
 141
 142 /**
 143  * vmw_stdu_define_st - Defines a Screen Target
 144  *
 145  * @dev_priv:  VMW DRM device
 146  * @stdu: display unit to create a Screen Target for
 147  * @mode: The mode to set.
 148  * @crtc_x: X coordinate of screen target relative to framebuffer origin.
 149  * @crtc_y: Y coordinate of screen target relative to framebuffer origin.
 150  *
 151  * Creates a STDU that we can used later.  This function is called whenever the
 152  * framebuffer size changes.
 153  *
 154  * RETURNs:
 155  * 0 on success, error code on failure
 156  */
 157 static int vmw_stdu_define_st(struct vmw_private *dev_priv,
 158                               struct vmw_screen_target_display_unit *stdu,
 159                               struct drm_display_mode *mode,
 160                               int crtc_x, int crtc_y)
 161 {
 162         struct {
 163                 SVGA3dCmdHeader header;
 164                 SVGA3dCmdDefineGBScreenTarget body;
 165         } *cmd;
 166
 167         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 168
 169         if (unlikely(cmd == NULL)) {
 170                 DRM_ERROR("Out of FIFO space defining Screen Target\n");
 171                 return -ENOMEM;
 172         }
 173
 174         cmd->header.id   = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
 175         cmd->header.size = sizeof(cmd->body);
 176
 177         cmd->body.stid   = stdu->base.unit;
 178         cmd->body.width  = mode->hdisplay;
 179         cmd->body.height = mode->vdisplay;
 180         cmd->body.flags  = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
 181         cmd->body.dpi    = 0;
 182         if (stdu->base.is_implicit) {
 183                 cmd->body.xRoot  = crtc_x;
 184                 cmd->body.yRoot  = crtc_y;
 185         } else {
 186                 cmd->body.xRoot  = stdu->base.gui_x;
 187                 cmd->body.yRoot  = stdu->base.gui_y;
 188         }
 189         stdu->base.set_gui_x = cmd->body.xRoot;
 190         stdu->base.set_gui_y = cmd->body.yRoot;
 191
 192         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 193
 194         stdu->defined = true;
 195         stdu->display_width  = mode->hdisplay;
 196         stdu->display_height = mode->vdisplay;
 197
 198         return 0;
 199 }
 200
 201
 202
 203 /**
 204  * vmw_stdu_bind_st - Binds a surface to a Screen Target
 205  *
 206  * @dev_priv: VMW DRM device
 207  * @stdu: display unit affected
 208  * @res: Buffer to bind to the screen target.  Set to NULL to blank screen.
 209  *
 210  * Binding a surface to a Screen Target the same as flipping
 211  */
 212 static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
 213                             struct vmw_screen_target_display_unit *stdu,
 214                             const struct vmw_resource *res)
 215 {
 216         SVGA3dSurfaceImageId image;
 217
 218         struct {
 219                 SVGA3dCmdHeader header;
 220                 SVGA3dCmdBindGBScreenTarget body;
 221         } *cmd;
 222
 223
 224         if (!stdu->defined) {
 225                 DRM_ERROR("No screen target defined\n");
 226                 return -EINVAL;
 227         }
 228
 229         /* Set up image using information in vfb */
 230         memset(&image, 0, sizeof(image));
 231         image.sid = res ? res->id : SVGA3D_INVALID_ID;
 232
 233         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 234
 235         if (unlikely(cmd == NULL)) {
 236                 DRM_ERROR("Out of FIFO space binding a screen target\n");
 237                 return -ENOMEM;
 238         }
 239
 240         cmd->header.id   = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
 241         cmd->header.size = sizeof(cmd->body);
 242
 243         cmd->body.stid   = stdu->base.unit;
 244         cmd->body.image  = image;
 245
 246         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 247
 248         return 0;
 249 }
 250
 251 /**
 252  * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
 253  * bounding box.
 254  *
 255  * @cmd: Pointer to command stream.
 256  * @unit: Screen target unit.
 257  * @left: Left side of bounding box.
 258  * @right: Right side of bounding box.
 259  * @top: Top side of bounding box.
 260  * @bottom: Bottom side of bounding box.
 261  */
 262 static void vmw_stdu_populate_update(void *cmd, int unit,
 263                                      s32 left, s32 right, s32 top, s32 bottom)
 264 {
 265         struct vmw_stdu_update *update = cmd;
 266
 267         update->header.id   = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
 268         update->header.size = sizeof(update->body);
 269
 270         update->body.stid   = unit;
 271         update->body.rect.x = left;
 272         update->body.rect.y = top;
 273         update->body.rect.w = right - left;
 274         update->body.rect.h = bottom - top;
 275 }
 276
 277 /**
 278  * vmw_stdu_update_st - Full update of a Screen Target
 279  *
 280  * @dev_priv: VMW DRM device
 281  * @stdu: display unit affected
 282  *
 283  * This function needs to be called whenever the content of a screen
 284  * target has changed completely. Typically as a result of a backing
 285  * surface change.
 286  *
 287  * RETURNS:
 288  * 0 on success, error code on failure
 289  */
 290 static int vmw_stdu_update_st(struct vmw_private *dev_priv,
 291                               struct vmw_screen_target_display_unit *stdu)
 292 {
 293         struct vmw_stdu_update *cmd;
 294
 295         if (!stdu->defined) {
 296                 DRM_ERROR("No screen target defined");
 297                 return -EINVAL;
 298         }
 299
 300         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 301
 302         if (unlikely(cmd == NULL)) {
 303                 DRM_ERROR("Out of FIFO space updating a Screen Target\n");
 304                 return -ENOMEM;
 305         }
 306
 307         vmw_stdu_populate_update(cmd, stdu->base.unit,
 308                                  0, stdu->display_width,
 309                                  0, stdu->display_height);
 310
 311         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 312
 313         return 0;
 314 }
 315
 316
 317
 318 /**
 319  * vmw_stdu_destroy_st - Destroy a Screen Target
 320  *
 321  * @dev_priv:  VMW DRM device
 322  * @stdu: display unit to destroy
 323  */
 324 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
 325                                struct vmw_screen_target_display_unit *stdu)
 326 {
 327         int    ret;
 328
 329         struct {
 330                 SVGA3dCmdHeader header;
 331                 SVGA3dCmdDestroyGBScreenTarget body;
 332         } *cmd;
 333
 334
 335         /* Nothing to do if not successfully defined */
 336         if (unlikely(!stdu->defined))
 337                 return 0;
 338
 339         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 340
 341         if (unlikely(cmd == NULL)) {
 342                 DRM_ERROR("Out of FIFO space, screen target not destroyed\n");
 343                 return -ENOMEM;
 344         }
 345
 346         cmd->header.id   = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
 347         cmd->header.size = sizeof(cmd->body);
 348
 349         cmd->body.stid   = stdu->base.unit;
 350
 351         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 352
 353         /* Force sync */
 354         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 355         if (unlikely(ret != 0))
 356                 DRM_ERROR("Failed to sync with HW");
 357
 358         stdu->defined = false;
 359         stdu->display_width  = 0;
 360         stdu->display_height = 0;
 361
 362         return ret;
 363 }
 364
 365
 366 /**
 367  * vmw_stdu_crtc_mode_set_nofb - Updates screen target size
 368  *
 369  * @crtc: CRTC associated with the screen target
 370  *
 371  * This function defines/destroys a screen target
 372  *
 373  */
 374 static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 375 {
 376         struct vmw_private *dev_priv;
 377         struct vmw_screen_target_display_unit *stdu;
 378         int ret;
 379
 380
 381         stdu     = vmw_crtc_to_stdu(crtc);
 382         dev_priv = vmw_priv(crtc->dev);
 383
 384         if (stdu->defined) {
 385                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 386                 if (ret)
 387                         DRM_ERROR("Failed to blank CRTC\n");
 388
 389                 (void) vmw_stdu_update_st(dev_priv, stdu);
 390
 391                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 392                 if (ret)
 393                         DRM_ERROR("Failed to destroy Screen Target\n");
 394
 395                 stdu->content_fb_type = SAME_AS_DISPLAY;
 396         }
 397
 398         if (!crtc->state->enable)
 399                 return;
 400
 401         vmw_svga_enable(dev_priv);
 402         ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, crtc->x, crtc->y);
 403
 404         if (ret)
 405                 DRM_ERROR("Failed to define Screen Target of size %dx%d\n",
 406                           crtc->x, crtc->y);
 407 }
 408
 409
 410 static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
 411 {
 412 }
 413
 414
 415 static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
 416                                         struct drm_crtc_state *old_state)
 417 {
 418         struct vmw_private *dev_priv;
 419         struct vmw_screen_target_display_unit *stdu;
 420         struct vmw_framebuffer *vfb;
 421         struct drm_framebuffer *fb;
 422
 423
 424         stdu     = vmw_crtc_to_stdu(crtc);
 425         dev_priv = vmw_priv(crtc->dev);
 426         fb       = crtc->primary->fb;
 427
 428         vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 429
 430         if (vfb)
 431                 vmw_kms_add_active(dev_priv, &stdu->base, vfb);
 432         else
 433                 vmw_kms_del_active(dev_priv, &stdu->base);
 434 }
 435
 436 static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
 437                                          struct drm_crtc_state *old_state)
 438 {
 439         struct vmw_private *dev_priv;
 440         struct vmw_screen_target_display_unit *stdu;
 441         int ret;
 442
 443
 444         if (!crtc) {
 445                 DRM_ERROR("CRTC is NULL\n");
 446                 return;
 447         }
 448
 449         stdu     = vmw_crtc_to_stdu(crtc);
 450         dev_priv = vmw_priv(crtc->dev);
 451
 452         if (stdu->defined) {
 453                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 454                 if (ret)
 455                         DRM_ERROR("Failed to blank CRTC\n");
 456
 457                 (void) vmw_stdu_update_st(dev_priv, stdu);
 458
 459                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 460                 if (ret)
 461                         DRM_ERROR("Failed to destroy Screen Target\n");
 462
 463                 stdu->content_fb_type = SAME_AS_DISPLAY;
 464         }
 465 }
 466
 467 /**
 468  * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
 469  *
 470  * @crtc: CRTC to attach FB to
 471  * @fb: FB to attach
 472  * @event: Event to be posted. This event should've been alloced
 473  *         using k[mz]alloc, and should've been completely initialized.
 474  * @page_flip_flags: Input flags.
 475  *
 476  * If the STDU uses the same display and content buffers, i.e. a true flip,
 477  * this function will replace the existing display buffer with the new content
 478  * buffer.
 479  *
 480  * If the STDU uses different display and content buffers, i.e. a blit, then
 481  * only the content buffer will be updated.
 482  *
 483  * RETURNS:
 484  * 0 on success, error code on failure
 485  */
 486 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 487                                    struct drm_framebuffer *new_fb,
 488                                    struct drm_pending_vblank_event *event,
 489                                    uint32_t flags,
 490                                    struct drm_modeset_acquire_ctx *ctx)
 491
 492 {
 493         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 494         struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
 495         struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
 496         struct drm_vmw_rect vclips;
 497         int ret;
 498
 499         dev_priv          = vmw_priv(crtc->dev);
 500         stdu              = vmw_crtc_to_stdu(crtc);
 501
 502         if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
 503                 return -EINVAL;
 504
 505         /*
 506          * We're always async, but the helper doesn't know how to set async
 507          * so lie to the helper. Also, the helper expects someone
 508          * to pick the event up from the crtc state, and if nobody does,
 509          * it will free it. Since we handle the event in this function,
 510          * don't hand it to the helper.
 511          */
 512         flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
 513         ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
 514         if (ret) {
 515                 DRM_ERROR("Page flip error %d.\n", ret);
 516                 return ret;
 517         }
 518
 519         if (stdu->base.is_implicit)
 520                 vmw_kms_update_implicit_fb(dev_priv, crtc);
 521
 522         /*
 523          * Now that we've bound a new surface to the screen target,
 524          * update the contents.
 525          */
 526         vclips.x = crtc->x;
 527         vclips.y = crtc->y;
 528         vclips.w = crtc->mode.hdisplay;
 529         vclips.h = crtc->mode.vdisplay;
 530
 531         if (vfb->dmabuf)
 532                 ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
 533                                        1, 1, true, false);
 534         else
 535                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
 536                                                  NULL, 0, 0, 1, 1, NULL);
 537         if (ret) {
 538                 DRM_ERROR("Page flip update error %d.\n", ret);
 539                 return ret;
 540         }
 541
 542         if (event) {
 543                 struct vmw_fence_obj *fence = NULL;
 544                 struct drm_file *file_priv = event->base.file_priv;
 545
 546                 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
 547                 if (!fence)
 548                         return -ENOMEM;
 549
 550                 ret = vmw_event_fence_action_queue(file_priv, fence,
 551                                                    &event->base,
 552                                                    &event->event.vbl.tv_sec,
 553                                                    &event->event.vbl.tv_usec,
 554                                                    true);
 555                 vmw_fence_obj_unreference(&fence);
 556         } else {
 557                 (void) vmw_fifo_flush(dev_priv, false);
 558         }
 559
 560         return 0;
 561 }
 562
 563
 564 /**
 565  * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect
 566  *
 567  * @dirty: The closure structure.
 568  *
 569  * Encodes a surface DMA command cliprect and updates the bounding box
 570  * for the DMA.
 571  */
 572 static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty)
 573 {
 574         struct vmw_stdu_dirty *ddirty =
 575                 container_of(dirty, struct vmw_stdu_dirty, base);
 576         struct vmw_stdu_dma *cmd = dirty->cmd;
 577         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 578
 579         blit += dirty->num_hits;
 580         blit->srcx = dirty->fb_x;
 581         blit->srcy = dirty->fb_y;
 582         blit->x = dirty->unit_x1;
 583         blit->y = dirty->unit_y1;
 584         blit->d = 1;
 585         blit->w = dirty->unit_x2 - dirty->unit_x1;
 586         blit->h = dirty->unit_y2 - dirty->unit_y1;
 587         dirty->num_hits++;
 588
 589         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
 590                 return;
 591
 592         /* Destination bounding box */
 593         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 594         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 595         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 596         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 597 }
 598
 599 /**
 600  * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command.
 601  *
 602  * @dirty: The closure structure.
 603  *
 604  * Fills in the missing fields in a DMA command, and optionally encodes
 605  * a screen target update command, depending on transfer direction.
 606  */
 607 static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
 608 {
 609         struct vmw_stdu_dirty *ddirty =
 610                 container_of(dirty, struct vmw_stdu_dirty, base);
 611         struct vmw_screen_target_display_unit *stdu =
 612                 container_of(dirty->unit, typeof(*stdu), base);
 613         struct vmw_stdu_dma *cmd = dirty->cmd;
 614         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 615         SVGA3dCmdSurfaceDMASuffix *suffix =
 616                 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
 617         size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
 618
 619         if (!dirty->num_hits) {
 620                 vmw_fifo_commit(dirty->dev_priv, 0);
 621                 return;
 622         }
 623
 624         cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
 625         cmd->header.size = sizeof(cmd->body) + blit_size;
 626         vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
 627         cmd->body.guest.pitch = ddirty->pitch;
 628         cmd->body.host.sid = stdu->display_srf->res.id;
 629         cmd->body.host.face = 0;
 630         cmd->body.host.mipmap = 0;
 631         cmd->body.transfer = ddirty->transfer;
 632         suffix->suffixSize = sizeof(*suffix);
 633         suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
 634
 635         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 636                 blit_size += sizeof(struct vmw_stdu_update);
 637
 638                 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
 639                                          ddirty->left, ddirty->right,
 640                                          ddirty->top, ddirty->bottom);
 641         }
 642
 643         vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
 644
 645         ddirty->left = ddirty->top = S32_MAX;
 646         ddirty->right = ddirty->bottom = S32_MIN;
 647 }
 648
 649
 650 /**
 651  * vmw_stdu_dmabuf_cpu_clip - Callback to encode a CPU blit
 652  *
 653  * @dirty: The closure structure.
 654  *
 655  * This function calculates the bounding box for all the incoming clips.
 656  */
 657 static void vmw_stdu_dmabuf_cpu_clip(struct vmw_kms_dirty *dirty)
 658 {
 659         struct vmw_stdu_dirty *ddirty =
 660                 container_of(dirty, struct vmw_stdu_dirty, base);
 661
 662         dirty->num_hits = 1;
 663
 664         /* Calculate destination bounding box */
 665         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 666         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 667         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 668         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 669
 670         /*
 671          * Calculate content bounding box.  We only need the top-left
 672          * coordinate because width and height will be the same as the
 673          * destination bounding box above
 674          */
 675         ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
 676         ddirty->fb_top  = min_t(s32, ddirty->fb_top, dirty->fb_y);
 677 }
 678
 679
 680 /**
 681  * vmw_stdu_dmabuf_cpu_commit - Callback to do a CPU blit from DMAbuf
 682  *
 683  * @dirty: The closure structure.
 684  *
 685  * For the special case when we cannot create a proxy surface in a
 686  * 2D VM, we have to do a CPU blit ourselves.
 687  */
 688 static void vmw_stdu_dmabuf_cpu_commit(struct vmw_kms_dirty *dirty)
 689 {
 690         struct vmw_stdu_dirty *ddirty =
 691                 container_of(dirty, struct vmw_stdu_dirty, base);
 692         struct vmw_screen_target_display_unit *stdu =
 693                 container_of(dirty->unit, typeof(*stdu), base);
 694         s32 width, height;
 695         s32 src_pitch, dst_pitch;
 696         u8 *src, *dst;
 697         bool not_used;
 698         struct ttm_bo_kmap_obj guest_map;
 699         int ret;
 700
 701         if (!dirty->num_hits)
 702                 return;
 703
 704         width = ddirty->right - ddirty->left;
 705         height = ddirty->bottom - ddirty->top;
 706
 707         if (width == 0 || height == 0)
 708                 return;
 709
 710         ret = ttm_bo_kmap(&ddirty->buf->base, 0, ddirty->buf->base.num_pages,
 711                           &guest_map);
 712         if (ret) {
 713                 DRM_ERROR("Failed mapping framebuffer for blit: %d\n",
 714                           ret);
 715                 goto out_cleanup;
 716         }
 717
 718         /* Assume we are blitting from Host (display_srf) to Guest (dmabuf) */
 719         src_pitch = stdu->display_srf->base_size.width * stdu->cpp;
 720         src = ttm_kmap_obj_virtual(&stdu->host_map, &not_used);
 721         src += ddirty->top * src_pitch + ddirty->left * stdu->cpp;
 722
 723         dst_pitch = ddirty->pitch;
 724         dst = ttm_kmap_obj_virtual(&guest_map, &not_used);
 725         dst += ddirty->fb_top * dst_pitch + ddirty->fb_left * stdu->cpp;
 726
 727
 728         /* Figure out the real direction */
 729         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 730                 u8 *tmp;
 731                 s32 tmp_pitch;
 732
 733                 tmp = src;
 734                 tmp_pitch = src_pitch;
 735
 736                 src = dst;
 737                 src_pitch = dst_pitch;
 738
 739                 dst = tmp;
 740                 dst_pitch = tmp_pitch;
 741         }
 742
 743         /* CPU Blit */
 744         while (height-- > 0) {
 745                 memcpy(dst, src, width * stdu->cpp);
 746                 dst += dst_pitch;
 747                 src += src_pitch;
 748         }
 749
 750         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 751                 struct vmw_private *dev_priv;
 752                 struct vmw_stdu_update *cmd;
 753                 struct drm_clip_rect region;
 754                 int ret;
 755
 756                 /* We are updating the actual surface, not a proxy */
 757                 region.x1 = ddirty->left;
 758                 region.x2 = ddirty->right;
 759                 region.y1 = ddirty->top;
 760                 region.y2 = ddirty->bottom;
 761                 ret = vmw_kms_update_proxy(
 762                         (struct vmw_resource *) &stdu->display_srf->res,
 763                         (const struct drm_clip_rect *) &region, 1, 1);
 764                 if (ret)
 765                         goto out_cleanup;
 766
 767
 768                 dev_priv = vmw_priv(stdu->base.crtc.dev);
 769                 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 770
 771                 if (!cmd) {
 772                         DRM_ERROR("Cannot reserve FIFO space to update STDU");
 773                         goto out_cleanup;
 774                 }
 775
 776                 vmw_stdu_populate_update(cmd, stdu->base.unit,
 777                                          ddirty->left, ddirty->right,
 778                                          ddirty->top, ddirty->bottom);
 779
 780                 vmw_fifo_commit(dev_priv, sizeof(*cmd));
 781         }
 782
 783         ttm_bo_kunmap(&guest_map);
 784 out_cleanup:
 785         ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
 786         ddirty->right = ddirty->bottom = S32_MIN;
 787 }
 788
 789 /**
 790  * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
 791  * framebuffer and the screen target system.
 792  *
 793  * @dev_priv: Pointer to the device private structure.
 794  * @file_priv: Pointer to a struct drm-file identifying the caller. May be
 795  * set to NULL, but then @user_fence_rep must also be set to NULL.
 796  * @vfb: Pointer to the dma-buffer backed framebuffer.
 797  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 798  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 799  * be NULL.
 800  * @num_clips: Number of clip rects in @clips or @vclips.
 801  * @increment: Increment to use when looping over @clips or @vclips.
 802  * @to_surface: Whether to DMA to the screen target system as opposed to
 803  * from the screen target system.
 804  * @interruptible: Whether to perform waits interruptible if possible.
 805  *
 806  * If DMA-ing till the screen target system, the function will also notify
 807  * the screen target system that a bounding box of the cliprects has been
 808  * updated.
 809  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 810  * interrupted.
 811  */
 812 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 813                      struct drm_file *file_priv,
 814                      struct vmw_framebuffer *vfb,
 815                      struct drm_vmw_fence_rep __user *user_fence_rep,
 816                      struct drm_clip_rect *clips,
 817                      struct drm_vmw_rect *vclips,
 818                      uint32_t num_clips,
 819                      int increment,
 820                      bool to_surface,
 821                      bool interruptible)
 822 {
 823         struct vmw_dma_buffer *buf =
 824                 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
 825         struct vmw_stdu_dirty ddirty;
 826         int ret;
 827
 828         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
 829                                             false);
 830         if (ret)
 831                 return ret;
 832
 833         ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 834                 SVGA3D_READ_HOST_VRAM;
 835         ddirty.left = ddirty.top = S32_MAX;
 836         ddirty.right = ddirty.bottom = S32_MIN;
 837         ddirty.fb_left = ddirty.fb_top = S32_MAX;
 838         ddirty.pitch = vfb->base.pitches[0];
 839         ddirty.buf = buf;
 840         ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
 841         ddirty.base.clip = vmw_stdu_dmabuf_clip;
 842         ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
 843                 num_clips * sizeof(SVGA3dCopyBox) +
 844                 sizeof(SVGA3dCmdSurfaceDMASuffix);
 845         if (to_surface)
 846                 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
 847
 848         /* 2D VMs cannot use SVGA_3D_CMD_SURFACE_DMA so do CPU blit instead */
 849         if (!(dev_priv->capabilities & SVGA_CAP_3D)) {
 850                 ddirty.base.fifo_commit = vmw_stdu_dmabuf_cpu_commit;
 851                 ddirty.base.clip = vmw_stdu_dmabuf_cpu_clip;
 852                 ddirty.base.fifo_reserve_size = 0;
 853         }
 854
 855         ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 856                                    0, 0, num_clips, increment, &ddirty.base);
 857         vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
 858                                      user_fence_rep);
 859
 860         return ret;
 861 }
 862
 863 /**
 864  * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
 865  *
 866  * @dirty: The closure structure.
 867  *
 868  * Encodes a surface copy command cliprect and updates the bounding box
 869  * for the copy.
 870  */
 871 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
 872 {
 873         struct vmw_stdu_dirty *sdirty =
 874                 container_of(dirty, struct vmw_stdu_dirty, base);
 875         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 876         struct vmw_screen_target_display_unit *stdu =
 877                 container_of(dirty->unit, typeof(*stdu), base);
 878
 879         if (sdirty->sid != stdu->display_srf->res.id) {
 880                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 881
 882                 blit += dirty->num_hits;
 883                 blit->srcx = dirty->fb_x;
 884                 blit->srcy = dirty->fb_y;
 885                 blit->x = dirty->unit_x1;
 886                 blit->y = dirty->unit_y1;
 887                 blit->d = 1;
 888                 blit->w = dirty->unit_x2 - dirty->unit_x1;
 889                 blit->h = dirty->unit_y2 - dirty->unit_y1;
 890         }
 891
 892         dirty->num_hits++;
 893
 894         /* Destination bounding box */
 895         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 896         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 897         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 898         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 899 }
 900
 901 /**
 902  * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
 903  * copy command.
 904  *
 905  * @dirty: The closure structure.
 906  *
 907  * Fills in the missing fields in a surface copy command, and encodes a screen
 908  * target update command.
 909  */
 910 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 911 {
 912         struct vmw_stdu_dirty *sdirty =
 913                 container_of(dirty, struct vmw_stdu_dirty, base);
 914         struct vmw_screen_target_display_unit *stdu =
 915                 container_of(dirty->unit, typeof(*stdu), base);
 916         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 917         struct vmw_stdu_update *update;
 918         size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
 919         size_t commit_size;
 920
 921         if (!dirty->num_hits) {
 922                 vmw_fifo_commit(dirty->dev_priv, 0);
 923                 return;
 924         }
 925
 926         if (sdirty->sid != stdu->display_srf->res.id) {
 927                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 928
 929                 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
 930                 cmd->header.size = sizeof(cmd->body) + blit_size;
 931                 cmd->body.src.sid = sdirty->sid;
 932                 cmd->body.dest.sid = stdu->display_srf->res.id;
 933                 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
 934                 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
 935         } else {
 936                 update = dirty->cmd;
 937                 commit_size = sizeof(*update);
 938         }
 939
 940         vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
 941                                  sdirty->right, sdirty->top, sdirty->bottom);
 942
 943         vmw_fifo_commit(dirty->dev_priv, commit_size);
 944
 945         sdirty->left = sdirty->top = S32_MAX;
 946         sdirty->right = sdirty->bottom = S32_MIN;
 947 }
 948
 949 /**
 950  * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
 951  *
 952  * @dev_priv: Pointer to the device private structure.
 953  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 954  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 955  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 956  * be NULL.
 957  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 958  * to @framebuffer will be used.
 959  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 960  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 961  * @num_clips: Number of clip rects in @clips.
 962  * @inc: Increment to use when looping over @clips.
 963  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 964  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 965  * case the device has already synchronized.
 966  *
 967  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 968  * interrupted.
 969  */
 970 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
 971                                struct vmw_framebuffer *framebuffer,
 972                                struct drm_clip_rect *clips,
 973                                struct drm_vmw_rect *vclips,
 974                                struct vmw_resource *srf,
 975                                s32 dest_x,
 976                                s32 dest_y,
 977                                unsigned num_clips, int inc,
 978                                struct vmw_fence_obj **out_fence)
 979 {
 980         struct vmw_framebuffer_surface *vfbs =
 981                 container_of(framebuffer, typeof(*vfbs), base);
 982         struct vmw_stdu_dirty sdirty;
 983         int ret;
 984
 985         if (!srf)
 986                 srf = &vfbs->surface->res;
 987
 988         ret = vmw_kms_helper_resource_prepare(srf, true);
 989         if (ret)
 990                 return ret;
 991
 992         if (vfbs->is_dmabuf_proxy) {
 993                 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
 994                 if (ret)
 995                         goto out_finish;
 996         }
 997
 998         sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
 999         sdirty.base.clip = vmw_kms_stdu_surface_clip;
1000         sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
1001                 sizeof(SVGA3dCopyBox) * num_clips +
1002                 sizeof(struct vmw_stdu_update);
1003         sdirty.sid = srf->id;
1004         sdirty.left = sdirty.top = S32_MAX;
1005         sdirty.right = sdirty.bottom = S32_MIN;
1006
1007         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1008                                    dest_x, dest_y, num_clips, inc,
1009                                    &sdirty.base);
1010 out_finish:
1011         vmw_kms_helper_resource_finish(srf, out_fence);
1012
1013         return ret;
1014 }
1015
1016
1017 /*
1018  *  Screen Target CRTC dispatch table
1019  */
1020 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
1021         .gamma_set = vmw_du_crtc_gamma_set,
1022         .destroy = vmw_stdu_crtc_destroy,
1023         .reset = vmw_du_crtc_reset,
1024         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
1025         .atomic_destroy_state = vmw_du_crtc_destroy_state,
1026         .set_config = vmw_kms_set_config,
1027         .page_flip = vmw_stdu_crtc_page_flip,
1028 };
1029
1030
1031
1032 /******************************************************************************
1033  * Screen Target Display Unit Encoder Functions
1034  *****************************************************************************/
1035
1036 /**
1037  * vmw_stdu_encoder_destroy - cleans up the STDU
1038  *
1039  * @encoder: used the get the containing STDU
1040  *
1041  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1042  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1043  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1044  * get called.
1045  */
1046 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
1047 {
1048         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
1049 }
1050
1051 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
1052         .destroy = vmw_stdu_encoder_destroy,
1053 };
1054
1055
1056
1057 /******************************************************************************
1058  * Screen Target Display Unit Connector Functions
1059  *****************************************************************************/
1060
1061 /**
1062  * vmw_stdu_connector_destroy - cleans up the STDU
1063  *
1064  * @connector: used to get the containing STDU
1065  *
1066  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1067  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1068  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1069  * get called.
1070  */
1071 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
1072 {
1073         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
1074 }
1075
1076
1077
1078 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
1079         .dpms = vmw_du_connector_dpms,
1080         .detect = vmw_du_connector_detect,
1081         .fill_modes = vmw_du_connector_fill_modes,
1082         .set_property = vmw_du_connector_set_property,
1083         .destroy = vmw_stdu_connector_destroy,
1084         .reset = vmw_du_connector_reset,
1085         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
1086         .atomic_destroy_state = vmw_du_connector_destroy_state,
1087         .atomic_set_property = vmw_du_connector_atomic_set_property,
1088         .atomic_get_property = vmw_du_connector_atomic_get_property,
1089 };
1090
1091
1092 static const struct
1093 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
1094         .best_encoder = drm_atomic_helper_best_encoder,
1095 };
1096
1097
1098
1099 /******************************************************************************
1100  * Screen Target Display Plane Functions
1101  *****************************************************************************/
1102
1103
1104
1105 /**
1106  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
1107  *
1108  * @plane:  display plane
1109  * @old_state: Contains the FB to clean up
1110  *
1111  * Unpins the display surface
1112  *
1113  * Returns 0 on success
1114  */
1115 static void
1116 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1117                                   struct drm_plane_state *old_state)
1118 {
1119         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1120
1121         if (vps->host_map.virtual)
1122                 ttm_bo_kunmap(&vps->host_map);
1123
1124         if (vps->surf)
1125                 WARN_ON(!vps->pinned);
1126
1127         vmw_du_plane_cleanup_fb(plane, old_state);
1128
1129         vps->content_fb_type = SAME_AS_DISPLAY;
1130         vps->cpp = 0;
1131 }
1132
1133
1134
1135 /**
1136  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1137  *
1138  * @plane:  display plane
1139  * @new_state: info on the new plane state, including the FB
1140  *
1141  * This function allocates a new display surface if the content is
1142  * backed by a DMA.  The display surface is pinned here, and it'll
1143  * be unpinned in .cleanup_fb()
1144  *
1145  * Returns 0 on success
1146  */
1147 static int
1148 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1149                                   struct drm_plane_state *new_state)
1150 {
1151         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1152         struct drm_framebuffer *new_fb = new_state->fb;
1153         struct vmw_framebuffer *vfb;
1154         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1155         enum stdu_content_type new_content_type;
1156         struct vmw_framebuffer_surface *new_vfbs;
1157         struct drm_crtc *crtc = new_state->crtc;
1158         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1159         int ret;
1160
1161         /* No FB to prepare */
1162         if (!new_fb) {
1163                 if (vps->surf) {
1164                         WARN_ON(vps->pinned != 0);
1165                         vmw_surface_unreference(&vps->surf);
1166                 }
1167
1168                 return 0;
1169         }
1170
1171         vfb = vmw_framebuffer_to_vfb(new_fb);
1172         new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1173
1174         if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
1175             new_vfbs->surface->base_size.height == vdisplay)
1176                 new_content_type = SAME_AS_DISPLAY;
1177         else if (vfb->dmabuf)
1178                 new_content_type = SEPARATE_DMA;
1179         else
1180                 new_content_type = SEPARATE_SURFACE;
1181
1182         if (new_content_type != SAME_AS_DISPLAY) {
1183                 struct vmw_surface content_srf;
1184                 struct drm_vmw_size display_base_size = {0};
1185
1186                 display_base_size.width  = hdisplay;
1187                 display_base_size.height = vdisplay;
1188                 display_base_size.depth  = 1;
1189
1190                 /*
1191                  * If content buffer is a DMA buf, then we have to construct
1192                  * surface info
1193                  */
1194                 if (new_content_type == SEPARATE_DMA) {
1195
1196                         switch (new_fb->format->cpp[0]*8) {
1197                         case 32:
1198                                 content_srf.format = SVGA3D_X8R8G8B8;
1199                                 break;
1200
1201                         case 16:
1202                                 content_srf.format = SVGA3D_R5G6B5;
1203                                 break;
1204
1205                         case 8:
1206                                 content_srf.format = SVGA3D_P8;
1207                                 break;
1208
1209                         default:
1210                                 DRM_ERROR("Invalid format\n");
1211                                 return -EINVAL;
1212                         }
1213
1214                         content_srf.flags             = 0;
1215                         content_srf.mip_levels[0]     = 1;
1216                         content_srf.multisample_count = 0;
1217                 } else {
1218                         content_srf = *new_vfbs->surface;
1219                 }
1220
1221                 if (vps->surf) {
1222                         struct drm_vmw_size cur_base_size = vps->surf->base_size;
1223
1224                         if (cur_base_size.width != display_base_size.width ||
1225                             cur_base_size.height != display_base_size.height ||
1226                             vps->surf->format != content_srf.format) {
1227                                 WARN_ON(vps->pinned != 0);
1228                                 vmw_surface_unreference(&vps->surf);
1229                         }
1230
1231                 }
1232
1233                 if (!vps->surf) {
1234                         ret = vmw_surface_gb_priv_define
1235                                 (crtc->dev,
1236                                  /* Kernel visible only */
1237                                  0,
1238                                  content_srf.flags,
1239                                  content_srf.format,
1240                                  true,  /* a scanout buffer */
1241                                  content_srf.mip_levels[0],
1242                                  content_srf.multisample_count,
1243                                  0,
1244                                  display_base_size,
1245                                  &vps->surf);
1246                         if (ret != 0) {
1247                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1248                                 return ret;
1249                         }
1250                 }
1251         } else {
1252                 /*
1253                  * prepare_fb and clean_fb should only take care of pinning
1254                  * and unpinning.  References are tracked by state objects.
1255                  * The only time we add a reference in prepare_fb is if the
1256                  * state object doesn't have a reference to begin with
1257                  */
1258                 if (vps->surf) {
1259                         WARN_ON(vps->pinned != 0);
1260                         vmw_surface_unreference(&vps->surf);
1261                 }
1262
1263                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1264         }
1265
1266         if (vps->surf) {
1267
1268                 /* Pin new surface before flipping */
1269                 ret = vmw_resource_pin(&vps->surf->res, false);
1270                 if (ret)
1271                         goto out_srf_unref;
1272
1273                 vps->pinned++;
1274         }
1275
1276         vps->content_fb_type = new_content_type;
1277
1278         /*
1279          * This should only happen if the DMA buf is too large to create a
1280          * proxy surface for.
1281          * If we are a 2D VM with a DMA buffer then we have to use CPU blit
1282          * so cache these mappings
1283          */
1284         if (vps->content_fb_type == SEPARATE_DMA &&
1285             !(dev_priv->capabilities & SVGA_CAP_3D)) {
1286                 ret = ttm_bo_kmap(&vps->surf->res.backup->base, 0,
1287                                   vps->surf->res.backup->base.num_pages,
1288                                   &vps->host_map);
1289                 if (ret) {
1290                         DRM_ERROR("Failed to map display buffer to CPU\n");
1291                         goto out_srf_unpin;
1292                 }
1293
1294                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1295         }
1296
1297         return 0;
1298
1299 out_srf_unpin:
1300         vmw_resource_unpin(&vps->surf->res);
1301         vps->pinned--;
1302
1303 out_srf_unref:
1304         vmw_surface_unreference(&vps->surf);
1305         return ret;
1306 }
1307
1308
1309
1310 /**
1311  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1312  *
1313  * @plane: display plane
1314  * @old_state: Only used to get crtc info
1315  *
1316  * Formally update stdu->display_srf to the new plane, and bind the new
1317  * plane STDU.  This function is called during the commit phase when
1318  * all the preparation have been done and all the configurations have
1319  * been checked.
1320  */
1321 static void
1322 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1323                                      struct drm_plane_state *old_state)
1324 {
1325         struct vmw_private *dev_priv;
1326         struct vmw_screen_target_display_unit *stdu;
1327         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1328         struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
1329         int ret;
1330
1331         stdu     = vmw_crtc_to_stdu(crtc);
1332         dev_priv = vmw_priv(crtc->dev);
1333
1334         stdu->display_srf = vps->surf;
1335         stdu->content_fb_type = vps->content_fb_type;
1336         stdu->cpp = vps->cpp;
1337         memcpy(&stdu->host_map, &vps->host_map, sizeof(vps->host_map));
1338
1339         if (!stdu->defined)
1340                 return;
1341
1342         if (plane->state->fb)
1343                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1344         else
1345                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1346
1347         /*
1348          * We cannot really fail this function, so if we do, then output an
1349          * error and quit
1350          */
1351         if (ret)
1352                 DRM_ERROR("Failed to bind surface to STDU.\n");
1353         else
1354                 crtc->primary->fb = plane->state->fb;
1355
1356         ret = vmw_stdu_update_st(dev_priv, stdu);
1357
1358         if (ret)
1359                 DRM_ERROR("Failed to update STDU.\n");
1360 }
1361
1362
1363 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1364         .update_plane = drm_atomic_helper_update_plane,
1365         .disable_plane = drm_atomic_helper_disable_plane,
1366         .destroy = vmw_du_primary_plane_destroy,
1367         .reset = vmw_du_plane_reset,
1368         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1369         .atomic_destroy_state = vmw_du_plane_destroy_state,
1370 };
1371
1372 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1373         .update_plane = drm_atomic_helper_update_plane,
1374         .disable_plane = drm_atomic_helper_disable_plane,
1375         .destroy = vmw_du_cursor_plane_destroy,
1376         .reset = vmw_du_plane_reset,
1377         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1378         .atomic_destroy_state = vmw_du_plane_destroy_state,
1379 };
1380
1381
1382 /*
1383  * Atomic Helpers
1384  */
1385 static const struct
1386 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1387         .atomic_check = vmw_du_cursor_plane_atomic_check,
1388         .atomic_update = vmw_du_cursor_plane_atomic_update,
1389         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1390         .cleanup_fb = vmw_du_plane_cleanup_fb,
1391 };
1392
1393 static const struct
1394 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1395         .atomic_check = vmw_du_primary_plane_atomic_check,
1396         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1397         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1398         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1399 };
1400
1401 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1402         .prepare = vmw_stdu_crtc_helper_prepare,
1403         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1404         .atomic_check = vmw_du_crtc_atomic_check,
1405         .atomic_begin = vmw_du_crtc_atomic_begin,
1406         .atomic_flush = vmw_du_crtc_atomic_flush,
1407         .atomic_enable = vmw_stdu_crtc_atomic_enable,
1408         .atomic_disable = vmw_stdu_crtc_atomic_disable,
1409 };
1410
1411
1412 /**
1413  * vmw_stdu_init - Sets up a Screen Target Display Unit
1414  *
1415  * @dev_priv: VMW DRM device
1416  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1417  *
1418  * This function is called once per CRTC, and allocates one Screen Target
1419  * display unit to represent that CRTC.  Since the SVGA device does not separate
1420  * out encoder and connector, they are represented as part of the STDU as well.
1421  */
1422 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1423 {
1424         struct vmw_screen_target_display_unit *stdu;
1425         struct drm_device *dev = dev_priv->dev;
1426         struct drm_connector *connector;
1427         struct drm_encoder *encoder;
1428         struct drm_plane *primary, *cursor;
1429         struct drm_crtc *crtc;
1430         int    ret;
1431
1432
1433         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1434         if (!stdu)
1435                 return -ENOMEM;
1436
1437         stdu->base.unit = unit;
1438         crtc = &stdu->base.crtc;
1439         encoder = &stdu->base.encoder;
1440         connector = &stdu->base.connector;
1441         primary = &stdu->base.primary;
1442         cursor = &stdu->base.cursor;
1443
1444         stdu->base.pref_active = (unit == 0);
1445         stdu->base.pref_width  = dev_priv->initial_width;
1446         stdu->base.pref_height = dev_priv->initial_height;
1447
1448         /*
1449          * Remove this after enabling atomic because property values can
1450          * only exist in a state object
1451          */
1452         stdu->base.is_implicit = false;
1453
1454         /* Initialize primary plane */
1455         vmw_du_plane_reset(primary);
1456
1457         ret = drm_universal_plane_init(dev, primary,
1458                                        0, &vmw_stdu_plane_funcs,
1459                                        vmw_primary_plane_formats,
1460                                        ARRAY_SIZE(vmw_primary_plane_formats),
1461                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
1462         if (ret) {
1463                 DRM_ERROR("Failed to initialize primary plane");
1464                 goto err_free;
1465         }
1466
1467         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1468
1469         /* Initialize cursor plane */
1470         vmw_du_plane_reset(cursor);
1471
1472         ret = drm_universal_plane_init(dev, cursor,
1473                         0, &vmw_stdu_cursor_funcs,
1474                         vmw_cursor_plane_formats,
1475                         ARRAY_SIZE(vmw_cursor_plane_formats),
1476                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
1477         if (ret) {
1478                 DRM_ERROR("Failed to initialize cursor plane");
1479                 drm_plane_cleanup(&stdu->base.primary);
1480                 goto err_free;
1481         }
1482
1483         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1484
1485         vmw_du_connector_reset(connector);
1486
1487         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1488                                  DRM_MODE_CONNECTOR_VIRTUAL);
1489         if (ret) {
1490                 DRM_ERROR("Failed to initialize connector\n");
1491                 goto err_free;
1492         }
1493
1494         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1495         connector->status = vmw_du_connector_detect(connector, false);
1496         vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
1497
1498         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1499                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1500         if (ret) {
1501                 DRM_ERROR("Failed to initialize encoder\n");
1502                 goto err_free_connector;
1503         }
1504
1505         (void) drm_mode_connector_attach_encoder(connector, encoder);
1506         encoder->possible_crtcs = (1 << unit);
1507         encoder->possible_clones = 0;
1508
1509         ret = drm_connector_register(connector);
1510         if (ret) {
1511                 DRM_ERROR("Failed to register connector\n");
1512                 goto err_free_encoder;
1513         }
1514
1515         vmw_du_crtc_reset(crtc);
1516         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1517                                         &stdu->base.cursor,
1518                                         &vmw_stdu_crtc_funcs, NULL);
1519         if (ret) {
1520                 DRM_ERROR("Failed to initialize CRTC\n");
1521                 goto err_free_unregister;
1522         }
1523
1524         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1525
1526         drm_mode_crtc_set_gamma_size(crtc, 256);
1527
1528         drm_object_attach_property(&connector->base,
1529                                    dev_priv->hotplug_mode_update_property, 1);
1530         drm_object_attach_property(&connector->base,
1531                                    dev->mode_config.suggested_x_property, 0);
1532         drm_object_attach_property(&connector->base,
1533                                    dev->mode_config.suggested_y_property, 0);
1534         if (dev_priv->implicit_placement_property)
1535                 drm_object_attach_property
1536                         (&connector->base,
1537                          dev_priv->implicit_placement_property,
1538                          stdu->base.is_implicit);
1539         return 0;
1540
1541 err_free_unregister:
1542         drm_connector_unregister(connector);
1543 err_free_encoder:
1544         drm_encoder_cleanup(encoder);
1545 err_free_connector:
1546         drm_connector_cleanup(connector);
1547 err_free:
1548         kfree(stdu);
1549         return ret;
1550 }
1551
1552
1553
1554 /**
1555  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1556  *
1557  *  @stdu:  Screen Target Display Unit to be destroyed
1558  *
1559  *  Clean up after vmw_stdu_init
1560  */
1561 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1562 {
1563         vmw_du_cleanup(&stdu->base);
1564         kfree(stdu);
1565 }
1566
1567
1568
1569 /******************************************************************************
1570  * Screen Target Display KMS Functions
1571  *
1572  * These functions are called by the common KMS code in vmwgfx_kms.c
1573  *****************************************************************************/
1574
1575 /**
1576  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1577  *
1578  * @dev_priv: VMW DRM device
1579  *
1580  * This function initialize a Screen Target based display device.  It checks
1581  * the capability bits to make sure the underlying hardware can support
1582  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1583  * Units, as supported by the display hardware.
1584  *
1585  * RETURNS:
1586  * 0 on success, error code otherwise
1587  */
1588 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1589 {
1590         struct drm_device *dev = dev_priv->dev;
1591         int i, ret;
1592
1593
1594         /* Do nothing if Screen Target support is turned off */
1595         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1596                 return -ENOSYS;
1597
1598         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1599                 return -ENOSYS;
1600
1601         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1602         if (unlikely(ret != 0))
1603                 return ret;
1604
1605         dev_priv->active_display_unit = vmw_du_screen_target;
1606
1607         if (dev_priv->capabilities & SVGA_CAP_3D) {
1608                 /*
1609                  * For 3D VMs, display (scanout) buffer size is the smaller of
1610                  * max texture and max STDU
1611                  */
1612                 uint32_t max_width, max_height;
1613
1614                 max_width = min(dev_priv->texture_max_width,
1615                                 dev_priv->stdu_max_width);
1616                 max_height = min(dev_priv->texture_max_height,
1617                                  dev_priv->stdu_max_height);
1618
1619                 dev->mode_config.max_width = max_width;
1620                 dev->mode_config.max_height = max_height;
1621         } else {
1622                 /*
1623                  * Given various display aspect ratios, there's no way to
1624                  * estimate these using prim_bb_mem.  So just set these to
1625                  * something arbitrarily large and we will reject any layout
1626                  * that doesn't fit prim_bb_mem later
1627                  */
1628                 dev->mode_config.max_width = 8192;
1629                 dev->mode_config.max_height = 8192;
1630         }
1631
1632         vmw_kms_create_implicit_placement_property(dev_priv, false);
1633
1634         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1635                 ret = vmw_stdu_init(dev_priv, i);
1636
1637                 if (unlikely(ret != 0)) {
1638                         DRM_ERROR("Failed to initialize STDU %d", i);
1639                         return ret;
1640                 }
1641         }
1642
1643         DRM_INFO("Screen Target Display device initialized\n");
1644
1645         return 0;
1646 }