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, guest_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_helper_commit(struct drm_crtc *crtc)
 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_helper_disable(struct drm_crtc *crtc)
 436 {
 437         struct vmw_private *dev_priv;
 438         struct vmw_screen_target_display_unit *stdu;
 439         int ret;
 440
 441
 442         if (!crtc) {
 443                 DRM_ERROR("CRTC is NULL\n");
 444                 return;
 445         }
 446
 447         stdu     = vmw_crtc_to_stdu(crtc);
 448         dev_priv = vmw_priv(crtc->dev);
 449
 450         if (stdu->defined) {
 451                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 452                 if (ret)
 453                         DRM_ERROR("Failed to blank CRTC\n");
 454
 455                 (void) vmw_stdu_update_st(dev_priv, stdu);
 456
 457                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 458                 if (ret)
 459                         DRM_ERROR("Failed to destroy Screen Target\n");
 460
 461                 stdu->content_fb_type = SAME_AS_DISPLAY;
 462         }
 463 }
 464
 465 /**
 466  * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
 467  *
 468  * @crtc: CRTC to attach FB to
 469  * @fb: FB to attach
 470  * @event: Event to be posted. This event should've been alloced
 471  *         using k[mz]alloc, and should've been completely initialized.
 472  * @page_flip_flags: Input flags.
 473  *
 474  * If the STDU uses the same display and content buffers, i.e. a true flip,
 475  * this function will replace the existing display buffer with the new content
 476  * buffer.
 477  *
 478  * If the STDU uses different display and content buffers, i.e. a blit, then
 479  * only the content buffer will be updated.
 480  *
 481  * RETURNS:
 482  * 0 on success, error code on failure
 483  */
 484 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 485                                    struct drm_framebuffer *new_fb,
 486                                    struct drm_pending_vblank_event *event,
 487                                    uint32_t flags,
 488                                    struct drm_modeset_acquire_ctx *ctx)
 489
 490 {
 491         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 492         struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
 493         struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
 494         struct drm_vmw_rect vclips;
 495         int ret;
 496
 497         dev_priv          = vmw_priv(crtc->dev);
 498         stdu              = vmw_crtc_to_stdu(crtc);
 499
 500         if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
 501                 return -EINVAL;
 502
 503         /*
 504          * We're always async, but the helper doesn't know how to set async
 505          * so lie to the helper. Also, the helper expects someone
 506          * to pick the event up from the crtc state, and if nobody does,
 507          * it will free it. Since we handle the event in this function,
 508          * don't hand it to the helper.
 509          */
 510         flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
 511         ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
 512         if (ret) {
 513                 DRM_ERROR("Page flip error %d.\n", ret);
 514                 return ret;
 515         }
 516
 517         if (stdu->base.is_implicit)
 518                 vmw_kms_update_implicit_fb(dev_priv, crtc);
 519
 520         /*
 521          * Now that we've bound a new surface to the screen target,
 522          * update the contents.
 523          */
 524         vclips.x = crtc->x;
 525         vclips.y = crtc->y;
 526         vclips.w = crtc->mode.hdisplay;
 527         vclips.h = crtc->mode.vdisplay;
 528
 529         if (vfb->dmabuf)
 530                 ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
 531                                        1, 1, true, false);
 532         else
 533                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
 534                                                  NULL, 0, 0, 1, 1, NULL);
 535         if (ret) {
 536                 DRM_ERROR("Page flip update error %d.\n", ret);
 537                 return ret;
 538         }
 539
 540         if (event) {
 541                 struct vmw_fence_obj *fence = NULL;
 542                 struct drm_file *file_priv = event->base.file_priv;
 543
 544                 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
 545                 if (!fence)
 546                         return -ENOMEM;
 547
 548                 ret = vmw_event_fence_action_queue(file_priv, fence,
 549                                                    &event->base,
 550                                                    &event->event.tv_sec,
 551                                                    &event->event.tv_usec,
 552                                                    true);
 553                 vmw_fence_obj_unreference(&fence);
 554         } else {
 555                 (void) vmw_fifo_flush(dev_priv, false);
 556         }
 557
 558         return 0;
 559 }
 560
 561
 562 /**
 563  * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect
 564  *
 565  * @dirty: The closure structure.
 566  *
 567  * Encodes a surface DMA command cliprect and updates the bounding box
 568  * for the DMA.
 569  */
 570 static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty)
 571 {
 572         struct vmw_stdu_dirty *ddirty =
 573                 container_of(dirty, struct vmw_stdu_dirty, base);
 574         struct vmw_stdu_dma *cmd = dirty->cmd;
 575         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 576
 577         blit += dirty->num_hits;
 578         blit->srcx = dirty->fb_x;
 579         blit->srcy = dirty->fb_y;
 580         blit->x = dirty->unit_x1;
 581         blit->y = dirty->unit_y1;
 582         blit->d = 1;
 583         blit->w = dirty->unit_x2 - dirty->unit_x1;
 584         blit->h = dirty->unit_y2 - dirty->unit_y1;
 585         dirty->num_hits++;
 586
 587         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
 588                 return;
 589
 590         /* Destination bounding box */
 591         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 592         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 593         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 594         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 595 }
 596
 597 /**
 598  * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command.
 599  *
 600  * @dirty: The closure structure.
 601  *
 602  * Fills in the missing fields in a DMA command, and optionally encodes
 603  * a screen target update command, depending on transfer direction.
 604  */
 605 static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
 606 {
 607         struct vmw_stdu_dirty *ddirty =
 608                 container_of(dirty, struct vmw_stdu_dirty, base);
 609         struct vmw_screen_target_display_unit *stdu =
 610                 container_of(dirty->unit, typeof(*stdu), base);
 611         struct vmw_stdu_dma *cmd = dirty->cmd;
 612         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 613         SVGA3dCmdSurfaceDMASuffix *suffix =
 614                 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
 615         size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
 616
 617         if (!dirty->num_hits) {
 618                 vmw_fifo_commit(dirty->dev_priv, 0);
 619                 return;
 620         }
 621
 622         cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
 623         cmd->header.size = sizeof(cmd->body) + blit_size;
 624         vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
 625         cmd->body.guest.pitch = ddirty->pitch;
 626         cmd->body.host.sid = stdu->display_srf->res.id;
 627         cmd->body.host.face = 0;
 628         cmd->body.host.mipmap = 0;
 629         cmd->body.transfer = ddirty->transfer;
 630         suffix->suffixSize = sizeof(*suffix);
 631         suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
 632
 633         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 634                 blit_size += sizeof(struct vmw_stdu_update);
 635
 636                 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
 637                                          ddirty->left, ddirty->right,
 638                                          ddirty->top, ddirty->bottom);
 639         }
 640
 641         vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
 642
 643         ddirty->left = ddirty->top = S32_MAX;
 644         ddirty->right = ddirty->bottom = S32_MIN;
 645 }
 646
 647
 648 /**
 649  * vmw_stdu_dmabuf_cpu_clip - Callback to encode a CPU blit
 650  *
 651  * @dirty: The closure structure.
 652  *
 653  * This function calculates the bounding box for all the incoming clips.
 654  */
 655 static void vmw_stdu_dmabuf_cpu_clip(struct vmw_kms_dirty *dirty)
 656 {
 657         struct vmw_stdu_dirty *ddirty =
 658                 container_of(dirty, struct vmw_stdu_dirty, base);
 659
 660         dirty->num_hits = 1;
 661
 662         /* Calculate destination bounding box */
 663         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 664         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 665         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 666         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 667
 668         /*
 669          * Calculate content bounding box.  We only need the top-left
 670          * coordinate because width and height will be the same as the
 671          * destination bounding box above
 672          */
 673         ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
 674         ddirty->fb_top  = min_t(s32, ddirty->fb_top, dirty->fb_y);
 675 }
 676
 677
 678 /**
 679  * vmw_stdu_dmabuf_cpu_commit - Callback to do a CPU blit from DMAbuf
 680  *
 681  * @dirty: The closure structure.
 682  *
 683  * For the special case when we cannot create a proxy surface in a
 684  * 2D VM, we have to do a CPU blit ourselves.
 685  */
 686 static void vmw_stdu_dmabuf_cpu_commit(struct vmw_kms_dirty *dirty)
 687 {
 688         struct vmw_stdu_dirty *ddirty =
 689                 container_of(dirty, struct vmw_stdu_dirty, base);
 690         struct vmw_screen_target_display_unit *stdu =
 691                 container_of(dirty->unit, typeof(*stdu), base);
 692         s32 width, height;
 693         s32 src_pitch, dst_pitch;
 694         u8 *src, *dst;
 695         bool not_used;
 696
 697
 698         if (!dirty->num_hits)
 699                 return;
 700
 701         width = ddirty->right - ddirty->left;
 702         height = ddirty->bottom - ddirty->top;
 703
 704         if (width == 0 || height == 0)
 705                 return;
 706
 707
 708         /* Assume we are blitting from Host (display_srf) to Guest (dmabuf) */
 709         src_pitch = stdu->display_srf->base_size.width * stdu->cpp;
 710         src = ttm_kmap_obj_virtual(&stdu->host_map, &not_used);
 711         src += ddirty->top * src_pitch + ddirty->left * stdu->cpp;
 712
 713         dst_pitch = ddirty->pitch;
 714         dst = ttm_kmap_obj_virtual(&stdu->guest_map, &not_used);
 715         dst += ddirty->fb_top * dst_pitch + ddirty->fb_left * stdu->cpp;
 716
 717
 718         /* Figure out the real direction */
 719         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 720                 u8 *tmp;
 721                 s32 tmp_pitch;
 722
 723                 tmp = src;
 724                 tmp_pitch = src_pitch;
 725
 726                 src = dst;
 727                 src_pitch = dst_pitch;
 728
 729                 dst = tmp;
 730                 dst_pitch = tmp_pitch;
 731         }
 732
 733         /* CPU Blit */
 734         while (height-- > 0) {
 735                 memcpy(dst, src, width * stdu->cpp);
 736                 dst += dst_pitch;
 737                 src += src_pitch;
 738         }
 739
 740         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 741                 struct vmw_private *dev_priv;
 742                 struct vmw_stdu_update *cmd;
 743                 struct drm_clip_rect region;
 744                 int ret;
 745
 746                 /* We are updating the actual surface, not a proxy */
 747                 region.x1 = ddirty->left;
 748                 region.x2 = ddirty->right;
 749                 region.y1 = ddirty->top;
 750                 region.y2 = ddirty->bottom;
 751                 ret = vmw_kms_update_proxy(
 752                         (struct vmw_resource *) &stdu->display_srf->res,
 753                         (const struct drm_clip_rect *) &region, 1, 1);
 754                 if (ret)
 755                         goto out_cleanup;
 756
 757
 758                 dev_priv = vmw_priv(stdu->base.crtc.dev);
 759                 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 760
 761                 if (!cmd) {
 762                         DRM_ERROR("Cannot reserve FIFO space to update STDU");
 763                         goto out_cleanup;
 764                 }
 765
 766                 vmw_stdu_populate_update(cmd, stdu->base.unit,
 767                                          ddirty->left, ddirty->right,
 768                                          ddirty->top, ddirty->bottom);
 769
 770                 vmw_fifo_commit(dev_priv, sizeof(*cmd));
 771         }
 772
 773 out_cleanup:
 774         ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
 775         ddirty->right = ddirty->bottom = S32_MIN;
 776 }
 777
 778 /**
 779  * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
 780  * framebuffer and the screen target system.
 781  *
 782  * @dev_priv: Pointer to the device private structure.
 783  * @file_priv: Pointer to a struct drm-file identifying the caller. May be
 784  * set to NULL, but then @user_fence_rep must also be set to NULL.
 785  * @vfb: Pointer to the dma-buffer backed framebuffer.
 786  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 787  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 788  * be NULL.
 789  * @num_clips: Number of clip rects in @clips or @vclips.
 790  * @increment: Increment to use when looping over @clips or @vclips.
 791  * @to_surface: Whether to DMA to the screen target system as opposed to
 792  * from the screen target system.
 793  * @interruptible: Whether to perform waits interruptible if possible.
 794  *
 795  * If DMA-ing till the screen target system, the function will also notify
 796  * the screen target system that a bounding box of the cliprects has been
 797  * updated.
 798  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 799  * interrupted.
 800  */
 801 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 802                      struct drm_file *file_priv,
 803                      struct vmw_framebuffer *vfb,
 804                      struct drm_vmw_fence_rep __user *user_fence_rep,
 805                      struct drm_clip_rect *clips,
 806                      struct drm_vmw_rect *vclips,
 807                      uint32_t num_clips,
 808                      int increment,
 809                      bool to_surface,
 810                      bool interruptible)
 811 {
 812         struct vmw_dma_buffer *buf =
 813                 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
 814         struct vmw_stdu_dirty ddirty;
 815         int ret;
 816
 817         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
 818                                             false);
 819         if (ret)
 820                 return ret;
 821
 822         ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 823                 SVGA3D_READ_HOST_VRAM;
 824         ddirty.left = ddirty.top = S32_MAX;
 825         ddirty.right = ddirty.bottom = S32_MIN;
 826         ddirty.fb_left = ddirty.fb_top = S32_MAX;
 827         ddirty.pitch = vfb->base.pitches[0];
 828         ddirty.buf = buf;
 829         ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
 830         ddirty.base.clip = vmw_stdu_dmabuf_clip;
 831         ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
 832                 num_clips * sizeof(SVGA3dCopyBox) +
 833                 sizeof(SVGA3dCmdSurfaceDMASuffix);
 834         if (to_surface)
 835                 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
 836
 837         /* 2D VMs cannot use SVGA_3D_CMD_SURFACE_DMA so do CPU blit instead */
 838         if (!(dev_priv->capabilities & SVGA_CAP_3D)) {
 839                 ddirty.base.fifo_commit = vmw_stdu_dmabuf_cpu_commit;
 840                 ddirty.base.clip = vmw_stdu_dmabuf_cpu_clip;
 841                 ddirty.base.fifo_reserve_size = 0;
 842         }
 843
 844         ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 845                                    0, 0, num_clips, increment, &ddirty.base);
 846         vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
 847                                      user_fence_rep);
 848
 849         return ret;
 850 }
 851
 852 /**
 853  * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
 854  *
 855  * @dirty: The closure structure.
 856  *
 857  * Encodes a surface copy command cliprect and updates the bounding box
 858  * for the copy.
 859  */
 860 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
 861 {
 862         struct vmw_stdu_dirty *sdirty =
 863                 container_of(dirty, struct vmw_stdu_dirty, base);
 864         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 865         struct vmw_screen_target_display_unit *stdu =
 866                 container_of(dirty->unit, typeof(*stdu), base);
 867
 868         if (sdirty->sid != stdu->display_srf->res.id) {
 869                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 870
 871                 blit += dirty->num_hits;
 872                 blit->srcx = dirty->fb_x;
 873                 blit->srcy = dirty->fb_y;
 874                 blit->x = dirty->unit_x1;
 875                 blit->y = dirty->unit_y1;
 876                 blit->d = 1;
 877                 blit->w = dirty->unit_x2 - dirty->unit_x1;
 878                 blit->h = dirty->unit_y2 - dirty->unit_y1;
 879         }
 880
 881         dirty->num_hits++;
 882
 883         /* Destination bounding box */
 884         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 885         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 886         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 887         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 888 }
 889
 890 /**
 891  * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
 892  * copy command.
 893  *
 894  * @dirty: The closure structure.
 895  *
 896  * Fills in the missing fields in a surface copy command, and encodes a screen
 897  * target update command.
 898  */
 899 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 900 {
 901         struct vmw_stdu_dirty *sdirty =
 902                 container_of(dirty, struct vmw_stdu_dirty, base);
 903         struct vmw_screen_target_display_unit *stdu =
 904                 container_of(dirty->unit, typeof(*stdu), base);
 905         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 906         struct vmw_stdu_update *update;
 907         size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
 908         size_t commit_size;
 909
 910         if (!dirty->num_hits) {
 911                 vmw_fifo_commit(dirty->dev_priv, 0);
 912                 return;
 913         }
 914
 915         if (sdirty->sid != stdu->display_srf->res.id) {
 916                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 917
 918                 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
 919                 cmd->header.size = sizeof(cmd->body) + blit_size;
 920                 cmd->body.src.sid = sdirty->sid;
 921                 cmd->body.dest.sid = stdu->display_srf->res.id;
 922                 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
 923                 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
 924         } else {
 925                 update = dirty->cmd;
 926                 commit_size = sizeof(*update);
 927         }
 928
 929         vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
 930                                  sdirty->right, sdirty->top, sdirty->bottom);
 931
 932         vmw_fifo_commit(dirty->dev_priv, commit_size);
 933
 934         sdirty->left = sdirty->top = S32_MAX;
 935         sdirty->right = sdirty->bottom = S32_MIN;
 936 }
 937
 938 /**
 939  * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
 940  *
 941  * @dev_priv: Pointer to the device private structure.
 942  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 943  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 944  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 945  * be NULL.
 946  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 947  * to @framebuffer will be used.
 948  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 949  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 950  * @num_clips: Number of clip rects in @clips.
 951  * @inc: Increment to use when looping over @clips.
 952  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 953  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 954  * case the device has already synchronized.
 955  *
 956  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 957  * interrupted.
 958  */
 959 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
 960                                struct vmw_framebuffer *framebuffer,
 961                                struct drm_clip_rect *clips,
 962                                struct drm_vmw_rect *vclips,
 963                                struct vmw_resource *srf,
 964                                s32 dest_x,
 965                                s32 dest_y,
 966                                unsigned num_clips, int inc,
 967                                struct vmw_fence_obj **out_fence)
 968 {
 969         struct vmw_framebuffer_surface *vfbs =
 970                 container_of(framebuffer, typeof(*vfbs), base);
 971         struct vmw_stdu_dirty sdirty;
 972         int ret;
 973
 974         if (!srf)
 975                 srf = &vfbs->surface->res;
 976
 977         ret = vmw_kms_helper_resource_prepare(srf, true);
 978         if (ret)
 979                 return ret;
 980
 981         if (vfbs->is_dmabuf_proxy) {
 982                 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
 983                 if (ret)
 984                         goto out_finish;
 985         }
 986
 987         sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
 988         sdirty.base.clip = vmw_kms_stdu_surface_clip;
 989         sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
 990                 sizeof(SVGA3dCopyBox) * num_clips +
 991                 sizeof(struct vmw_stdu_update);
 992         sdirty.sid = srf->id;
 993         sdirty.left = sdirty.top = S32_MAX;
 994         sdirty.right = sdirty.bottom = S32_MIN;
 995
 996         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 997                                    dest_x, dest_y, num_clips, inc,
 998                                    &sdirty.base);
 999 out_finish:
1000         vmw_kms_helper_resource_finish(srf, out_fence);
1001
1002         return ret;
1003 }
1004
1005
1006 /*
1007  *  Screen Target CRTC dispatch table
1008  */
1009 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
1010         .gamma_set = vmw_du_crtc_gamma_set,
1011         .destroy = vmw_stdu_crtc_destroy,
1012         .reset = vmw_du_crtc_reset,
1013         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
1014         .atomic_destroy_state = vmw_du_crtc_destroy_state,
1015         .set_config = vmw_kms_set_config,
1016         .page_flip = vmw_stdu_crtc_page_flip,
1017 };
1018
1019
1020
1021 /******************************************************************************
1022  * Screen Target Display Unit Encoder Functions
1023  *****************************************************************************/
1024
1025 /**
1026  * vmw_stdu_encoder_destroy - cleans up the STDU
1027  *
1028  * @encoder: used the get the containing STDU
1029  *
1030  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1031  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1032  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1033  * get called.
1034  */
1035 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
1036 {
1037         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
1038 }
1039
1040 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
1041         .destroy = vmw_stdu_encoder_destroy,
1042 };
1043
1044
1045
1046 /******************************************************************************
1047  * Screen Target Display Unit Connector Functions
1048  *****************************************************************************/
1049
1050 /**
1051  * vmw_stdu_connector_destroy - cleans up the STDU
1052  *
1053  * @connector: used to get the containing STDU
1054  *
1055  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1056  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1057  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1058  * get called.
1059  */
1060 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
1061 {
1062         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
1063 }
1064
1065
1066
1067 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
1068         .dpms = vmw_du_connector_dpms,
1069         .detect = vmw_du_connector_detect,
1070         .fill_modes = vmw_du_connector_fill_modes,
1071         .set_property = vmw_du_connector_set_property,
1072         .destroy = vmw_stdu_connector_destroy,
1073         .reset = vmw_du_connector_reset,
1074         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
1075         .atomic_destroy_state = vmw_du_connector_destroy_state,
1076         .atomic_set_property = vmw_du_connector_atomic_set_property,
1077         .atomic_get_property = vmw_du_connector_atomic_get_property,
1078 };
1079
1080
1081 static const struct
1082 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
1083         .best_encoder = drm_atomic_helper_best_encoder,
1084 };
1085
1086
1087
1088 /******************************************************************************
1089  * Screen Target Display Plane Functions
1090  *****************************************************************************/
1091
1092
1093
1094 /**
1095  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
1096  *
1097  * @plane:  display plane
1098  * @old_state: Contains the FB to clean up
1099  *
1100  * Unpins the display surface
1101  *
1102  * Returns 0 on success
1103  */
1104 static void
1105 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1106                                   struct drm_plane_state *old_state)
1107 {
1108         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1109
1110         if (vps->guest_map.virtual)
1111                 ttm_bo_kunmap(&vps->guest_map);
1112
1113         if (vps->host_map.virtual)
1114                 ttm_bo_kunmap(&vps->host_map);
1115
1116         if (vps->surf)
1117                 WARN_ON(!vps->pinned);
1118
1119         vmw_du_plane_cleanup_fb(plane, old_state);
1120
1121         vps->content_fb_type = SAME_AS_DISPLAY;
1122         vps->cpp = 0;
1123 }
1124
1125
1126
1127 /**
1128  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1129  *
1130  * @plane:  display plane
1131  * @new_state: info on the new plane state, including the FB
1132  *
1133  * This function allocates a new display surface if the content is
1134  * backed by a DMA.  The display surface is pinned here, and it'll
1135  * be unpinned in .cleanup_fb()
1136  *
1137  * Returns 0 on success
1138  */
1139 static int
1140 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1141                                   struct drm_plane_state *new_state)
1142 {
1143         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1144         struct drm_framebuffer *new_fb = new_state->fb;
1145         struct vmw_framebuffer *vfb;
1146         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1147         enum stdu_content_type new_content_type;
1148         struct vmw_framebuffer_surface *new_vfbs;
1149         struct drm_crtc *crtc = new_state->crtc;
1150         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1151         int ret;
1152
1153         /* No FB to prepare */
1154         if (!new_fb) {
1155                 if (vps->surf) {
1156                         WARN_ON(vps->pinned != 0);
1157                         vmw_surface_unreference(&vps->surf);
1158                 }
1159
1160                 return 0;
1161         }
1162
1163         vfb = vmw_framebuffer_to_vfb(new_fb);
1164         new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1165
1166         if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
1167             new_vfbs->surface->base_size.height == vdisplay)
1168                 new_content_type = SAME_AS_DISPLAY;
1169         else if (vfb->dmabuf)
1170                 new_content_type = SEPARATE_DMA;
1171         else
1172                 new_content_type = SEPARATE_SURFACE;
1173
1174         if (new_content_type != SAME_AS_DISPLAY) {
1175                 struct vmw_surface content_srf;
1176                 struct drm_vmw_size display_base_size = {0};
1177
1178                 display_base_size.width  = hdisplay;
1179                 display_base_size.height = vdisplay;
1180                 display_base_size.depth  = 1;
1181
1182                 /*
1183                  * If content buffer is a DMA buf, then we have to construct
1184                  * surface info
1185                  */
1186                 if (new_content_type == SEPARATE_DMA) {
1187
1188                         switch (new_fb->format->cpp[0]*8) {
1189                         case 32:
1190                                 content_srf.format = SVGA3D_X8R8G8B8;
1191                                 break;
1192
1193                         case 16:
1194                                 content_srf.format = SVGA3D_R5G6B5;
1195                                 break;
1196
1197                         case 8:
1198                                 content_srf.format = SVGA3D_P8;
1199                                 break;
1200
1201                         default:
1202                                 DRM_ERROR("Invalid format\n");
1203                                 return -EINVAL;
1204                         }
1205
1206                         content_srf.flags             = 0;
1207                         content_srf.mip_levels[0]     = 1;
1208                         content_srf.multisample_count = 0;
1209                 } else {
1210                         content_srf = *new_vfbs->surface;
1211                 }
1212
1213                 if (vps->surf) {
1214                         struct drm_vmw_size cur_base_size = vps->surf->base_size;
1215
1216                         if (cur_base_size.width != display_base_size.width ||
1217                             cur_base_size.height != display_base_size.height ||
1218                             vps->surf->format != content_srf.format) {
1219                                 WARN_ON(vps->pinned != 0);
1220                                 vmw_surface_unreference(&vps->surf);
1221                         }
1222
1223                 }
1224
1225                 if (!vps->surf) {
1226                         ret = vmw_surface_gb_priv_define
1227                                 (crtc->dev,
1228                                  /* Kernel visible only */
1229                                  0,
1230                                  content_srf.flags,
1231                                  content_srf.format,
1232                                  true,  /* a scanout buffer */
1233                                  content_srf.mip_levels[0],
1234                                  content_srf.multisample_count,
1235                                  0,
1236                                  display_base_size,
1237                                  &vps->surf);
1238                         if (ret != 0) {
1239                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1240                                 return ret;
1241                         }
1242                 }
1243         } else {
1244                 /*
1245                  * prepare_fb and clean_fb should only take care of pinning
1246                  * and unpinning.  References are tracked by state objects.
1247                  * The only time we add a reference in prepare_fb is if the
1248                  * state object doesn't have a reference to begin with
1249                  */
1250                 if (vps->surf) {
1251                         WARN_ON(vps->pinned != 0);
1252                         vmw_surface_unreference(&vps->surf);
1253                 }
1254
1255                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1256         }
1257
1258         if (vps->surf) {
1259
1260                 /* Pin new surface before flipping */
1261                 ret = vmw_resource_pin(&vps->surf->res, false);
1262                 if (ret)
1263                         goto out_srf_unref;
1264
1265                 vps->pinned++;
1266         }
1267
1268         vps->content_fb_type = new_content_type;
1269
1270         /*
1271          * This should only happen if the DMA buf is too large to create a
1272          * proxy surface for.
1273          * If we are a 2D VM with a DMA buffer then we have to use CPU blit
1274          * so cache these mappings
1275          */
1276         if (vps->content_fb_type == SEPARATE_DMA &&
1277             !(dev_priv->capabilities & SVGA_CAP_3D)) {
1278
1279                 struct vmw_framebuffer_dmabuf *new_vfbd;
1280
1281                 new_vfbd = vmw_framebuffer_to_vfbd(new_fb);
1282
1283                 ret = ttm_bo_reserve(&new_vfbd->buffer->base, false, false,
1284                                      NULL);
1285                 if (ret)
1286                         goto out_srf_unpin;
1287
1288                 ret = ttm_bo_kmap(&new_vfbd->buffer->base, 0,
1289                                   new_vfbd->buffer->base.num_pages,
1290                                   &vps->guest_map);
1291
1292                 ttm_bo_unreserve(&new_vfbd->buffer->base);
1293
1294                 if (ret) {
1295                         DRM_ERROR("Failed to map content buffer to CPU\n");
1296                         goto out_srf_unpin;
1297                 }
1298
1299                 ret = ttm_bo_kmap(&vps->surf->res.backup->base, 0,
1300                                   vps->surf->res.backup->base.num_pages,
1301                                   &vps->host_map);
1302                 if (ret) {
1303                         DRM_ERROR("Failed to map display buffer to CPU\n");
1304                         ttm_bo_kunmap(&vps->guest_map);
1305                         goto out_srf_unpin;
1306                 }
1307
1308                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1309         }
1310
1311         return 0;
1312
1313 out_srf_unpin:
1314         vmw_resource_unpin(&vps->surf->res);
1315         vps->pinned--;
1316
1317 out_srf_unref:
1318         vmw_surface_unreference(&vps->surf);
1319         return ret;
1320 }
1321
1322
1323
1324 /**
1325  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1326  *
1327  * @plane: display plane
1328  * @old_state: Only used to get crtc info
1329  *
1330  * Formally update stdu->display_srf to the new plane, and bind the new
1331  * plane STDU.  This function is called during the commit phase when
1332  * all the preparation have been done and all the configurations have
1333  * been checked.
1334  */
1335 static void
1336 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1337                                      struct drm_plane_state *old_state)
1338 {
1339         struct vmw_private *dev_priv;
1340         struct vmw_screen_target_display_unit *stdu;
1341         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1342         struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
1343         int ret;
1344
1345         stdu     = vmw_crtc_to_stdu(crtc);
1346         dev_priv = vmw_priv(crtc->dev);
1347
1348         stdu->display_srf = vps->surf;
1349         stdu->content_fb_type = vps->content_fb_type;
1350         stdu->cpp = vps->cpp;
1351         memcpy(&stdu->guest_map, &vps->guest_map, sizeof(vps->guest_map));
1352         memcpy(&stdu->host_map, &vps->host_map, sizeof(vps->host_map));
1353
1354         if (!stdu->defined)
1355                 return;
1356
1357         if (plane->state->fb)
1358                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1359         else
1360                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1361
1362         /*
1363          * We cannot really fail this function, so if we do, then output an
1364          * error and quit
1365          */
1366         if (ret)
1367                 DRM_ERROR("Failed to bind surface to STDU.\n");
1368         else
1369                 crtc->primary->fb = plane->state->fb;
1370
1371         ret = vmw_stdu_update_st(dev_priv, stdu);
1372
1373         if (ret)
1374                 DRM_ERROR("Failed to update STDU.\n");
1375 }
1376
1377
1378 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1379         .update_plane = drm_atomic_helper_update_plane,
1380         .disable_plane = drm_atomic_helper_disable_plane,
1381         .destroy = vmw_du_primary_plane_destroy,
1382         .reset = vmw_du_plane_reset,
1383         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1384         .atomic_destroy_state = vmw_du_plane_destroy_state,
1385 };
1386
1387 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1388         .update_plane = drm_atomic_helper_update_plane,
1389         .disable_plane = drm_atomic_helper_disable_plane,
1390         .destroy = vmw_du_cursor_plane_destroy,
1391         .reset = vmw_du_plane_reset,
1392         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1393         .atomic_destroy_state = vmw_du_plane_destroy_state,
1394 };
1395
1396
1397 /*
1398  * Atomic Helpers
1399  */
1400 static const struct
1401 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1402         .atomic_check = vmw_du_cursor_plane_atomic_check,
1403         .atomic_update = vmw_du_cursor_plane_atomic_update,
1404         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1405         .cleanup_fb = vmw_du_plane_cleanup_fb,
1406 };
1407
1408 static const struct
1409 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1410         .atomic_check = vmw_du_primary_plane_atomic_check,
1411         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1412         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1413         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1414 };
1415
1416 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1417         .prepare = vmw_stdu_crtc_helper_prepare,
1418         .commit = vmw_stdu_crtc_helper_commit,
1419         .disable = vmw_stdu_crtc_helper_disable,
1420         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1421         .atomic_check = vmw_du_crtc_atomic_check,
1422         .atomic_begin = vmw_du_crtc_atomic_begin,
1423         .atomic_flush = vmw_du_crtc_atomic_flush,
1424 };
1425
1426
1427 /**
1428  * vmw_stdu_init - Sets up a Screen Target Display Unit
1429  *
1430  * @dev_priv: VMW DRM device
1431  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1432  *
1433  * This function is called once per CRTC, and allocates one Screen Target
1434  * display unit to represent that CRTC.  Since the SVGA device does not separate
1435  * out encoder and connector, they are represented as part of the STDU as well.
1436  */
1437 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1438 {
1439         struct vmw_screen_target_display_unit *stdu;
1440         struct drm_device *dev = dev_priv->dev;
1441         struct drm_connector *connector;
1442         struct drm_encoder *encoder;
1443         struct drm_plane *primary, *cursor;
1444         struct drm_crtc *crtc;
1445         int    ret;
1446
1447
1448         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1449         if (!stdu)
1450                 return -ENOMEM;
1451
1452         stdu->base.unit = unit;
1453         crtc = &stdu->base.crtc;
1454         encoder = &stdu->base.encoder;
1455         connector = &stdu->base.connector;
1456         primary = &stdu->base.primary;
1457         cursor = &stdu->base.cursor;
1458
1459         stdu->base.pref_active = (unit == 0);
1460         stdu->base.pref_width  = dev_priv->initial_width;
1461         stdu->base.pref_height = dev_priv->initial_height;
1462
1463         /*
1464          * Remove this after enabling atomic because property values can
1465          * only exist in a state object
1466          */
1467         stdu->base.is_implicit = false;
1468
1469         /* Initialize primary plane */
1470         vmw_du_plane_reset(primary);
1471
1472         ret = drm_universal_plane_init(dev, primary,
1473                                        0, &vmw_stdu_plane_funcs,
1474                                        vmw_primary_plane_formats,
1475                                        ARRAY_SIZE(vmw_primary_plane_formats),
1476                                        DRM_PLANE_TYPE_PRIMARY, NULL);
1477         if (ret) {
1478                 DRM_ERROR("Failed to initialize primary plane");
1479                 goto err_free;
1480         }
1481
1482         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1483
1484         /* Initialize cursor plane */
1485         vmw_du_plane_reset(cursor);
1486
1487         ret = drm_universal_plane_init(dev, cursor,
1488                         0, &vmw_stdu_cursor_funcs,
1489                         vmw_cursor_plane_formats,
1490                         ARRAY_SIZE(vmw_cursor_plane_formats),
1491                         DRM_PLANE_TYPE_CURSOR, NULL);
1492         if (ret) {
1493                 DRM_ERROR("Failed to initialize cursor plane");
1494                 drm_plane_cleanup(&stdu->base.primary);
1495                 goto err_free;
1496         }
1497
1498         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1499
1500         vmw_du_connector_reset(connector);
1501
1502         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1503                                  DRM_MODE_CONNECTOR_VIRTUAL);
1504         if (ret) {
1505                 DRM_ERROR("Failed to initialize connector\n");
1506                 goto err_free;
1507         }
1508
1509         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1510         connector->status = vmw_du_connector_detect(connector, false);
1511         vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
1512
1513         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1514                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1515         if (ret) {
1516                 DRM_ERROR("Failed to initialize encoder\n");
1517                 goto err_free_connector;
1518         }
1519
1520         (void) drm_mode_connector_attach_encoder(connector, encoder);
1521         encoder->possible_crtcs = (1 << unit);
1522         encoder->possible_clones = 0;
1523
1524         ret = drm_connector_register(connector);
1525         if (ret) {
1526                 DRM_ERROR("Failed to register connector\n");
1527                 goto err_free_encoder;
1528         }
1529
1530         vmw_du_crtc_reset(crtc);
1531         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1532                                         &stdu->base.cursor,
1533                                         &vmw_stdu_crtc_funcs, NULL);
1534         if (ret) {
1535                 DRM_ERROR("Failed to initialize CRTC\n");
1536                 goto err_free_unregister;
1537         }
1538
1539         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1540
1541         drm_mode_crtc_set_gamma_size(crtc, 256);
1542
1543         drm_object_attach_property(&connector->base,
1544                                    dev_priv->hotplug_mode_update_property, 1);
1545         drm_object_attach_property(&connector->base,
1546                                    dev->mode_config.suggested_x_property, 0);
1547         drm_object_attach_property(&connector->base,
1548                                    dev->mode_config.suggested_y_property, 0);
1549         if (dev_priv->implicit_placement_property)
1550                 drm_object_attach_property
1551                         (&connector->base,
1552                          dev_priv->implicit_placement_property,
1553                          stdu->base.is_implicit);
1554         return 0;
1555
1556 err_free_unregister:
1557         drm_connector_unregister(connector);
1558 err_free_encoder:
1559         drm_encoder_cleanup(encoder);
1560 err_free_connector:
1561         drm_connector_cleanup(connector);
1562 err_free:
1563         kfree(stdu);
1564         return ret;
1565 }
1566
1567
1568
1569 /**
1570  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1571  *
1572  *  @stdu:  Screen Target Display Unit to be destroyed
1573  *
1574  *  Clean up after vmw_stdu_init
1575  */
1576 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1577 {
1578         vmw_du_cleanup(&stdu->base);
1579         kfree(stdu);
1580 }
1581
1582
1583
1584 /******************************************************************************
1585  * Screen Target Display KMS Functions
1586  *
1587  * These functions are called by the common KMS code in vmwgfx_kms.c
1588  *****************************************************************************/
1589
1590 /**
1591  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1592  *
1593  * @dev_priv: VMW DRM device
1594  *
1595  * This function initialize a Screen Target based display device.  It checks
1596  * the capability bits to make sure the underlying hardware can support
1597  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1598  * Units, as supported by the display hardware.
1599  *
1600  * RETURNS:
1601  * 0 on success, error code otherwise
1602  */
1603 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1604 {
1605         struct drm_device *dev = dev_priv->dev;
1606         int i, ret;
1607
1608
1609         /* Do nothing if Screen Target support is turned off */
1610         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1611                 return -ENOSYS;
1612
1613         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1614                 return -ENOSYS;
1615
1616         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1617         if (unlikely(ret != 0))
1618                 return ret;
1619
1620         dev_priv->active_display_unit = vmw_du_screen_target;
1621
1622         if (dev_priv->capabilities & SVGA_CAP_3D) {
1623                 /*
1624                  * For 3D VMs, display (scanout) buffer size is the smaller of
1625                  * max texture and max STDU
1626                  */
1627                 uint32_t max_width, max_height;
1628
1629                 max_width = min(dev_priv->texture_max_width,
1630                                 dev_priv->stdu_max_width);
1631                 max_height = min(dev_priv->texture_max_height,
1632                                  dev_priv->stdu_max_height);
1633
1634                 dev->mode_config.max_width = max_width;
1635                 dev->mode_config.max_height = max_height;
1636         } else {
1637                 /*
1638                  * Given various display aspect ratios, there's no way to
1639                  * estimate these using prim_bb_mem.  So just set these to
1640                  * something arbitrarily large and we will reject any layout
1641                  * that doesn't fit prim_bb_mem later
1642                  */
1643                 dev->mode_config.max_width = 8192;
1644                 dev->mode_config.max_height = 8192;
1645         }
1646
1647         vmw_kms_create_implicit_placement_property(dev_priv, false);
1648
1649         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1650                 ret = vmw_stdu_init(dev_priv, i);
1651
1652                 if (unlikely(ret != 0)) {
1653                         DRM_ERROR("Failed to initialize STDU %d", i);
1654                         goto err_vblank_cleanup;
1655                 }
1656         }
1657
1658         DRM_INFO("Screen Target Display device initialized\n");
1659
1660         return 0;
1661
1662 err_vblank_cleanup:
1663         drm_vblank_cleanup(dev);
1664         return ret;
1665 }
1666
1667
1668
1669 /**
1670  * vmw_kms_stdu_close_display - Cleans up after vmw_kms_stdu_init_display
1671  *
1672  * @dev_priv: VMW DRM device
1673  *
1674  * Frees up any resources allocated by vmw_kms_stdu_init_display
1675  *
1676  * RETURNS:
1677  * 0 on success
1678  */
1679 int vmw_kms_stdu_close_display(struct vmw_private *dev_priv)
1680 {
1681         struct drm_device *dev = dev_priv->dev;
1682
1683         drm_vblank_cleanup(dev);
1684
1685         return 0;
1686 }