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