drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /******************************************************************************
   3  *
   4  * COPYRIGHT (C) 2014-2015 VMware, Inc., Palo Alto, CA., USA
   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 <drm/drm_atomic.h>
  29 #include <drm/drm_atomic_helper.h>
  30 #include <drm/drm_damage_helper.h>
  31 #include <drm/drm_fourcc.h>
  32 #include <drm/drm_plane_helper.h>
  33 #include <drm/drm_vblank.h>
  34
  35 #include "vmwgfx_kms.h"
  36 #include "device_include/svga3d_surfacedefs.h"
  37
  38 #define vmw_crtc_to_stdu(x) \
  39         container_of(x, struct vmw_screen_target_display_unit, base.crtc)
  40 #define vmw_encoder_to_stdu(x) \
  41         container_of(x, struct vmw_screen_target_display_unit, base.encoder)
  42 #define vmw_connector_to_stdu(x) \
  43         container_of(x, struct vmw_screen_target_display_unit, base.connector)
  44
  45
  46
  47 enum stdu_content_type {
  48         SAME_AS_DISPLAY = 0,
  49         SEPARATE_SURFACE,
  50         SEPARATE_BO
  51 };
  52
  53 /**
  54  * struct vmw_stdu_dirty - closure structure for the update functions
  55  *
  56  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
  57  * @transfer: Transfer direction for DMA command.
  58  * @left: Left side of bounding box.
  59  * @right: Right side of bounding box.
  60  * @top: Top side of bounding box.
  61  * @bottom: Bottom side of bounding box.
  62  * @fb_left: Left side of the framebuffer/content bounding box
  63  * @fb_top: Top of the framebuffer/content bounding box
  64  * @buf: buffer object when DMA-ing between buffer and screen targets.
  65  * @sid: Surface ID when copying between surface and screen targets.
  66  */
  67 struct vmw_stdu_dirty {
  68         struct vmw_kms_dirty base;
  69         SVGA3dTransferType  transfer;
  70         s32 left, right, top, bottom;
  71         s32 fb_left, fb_top;
  72         u32 pitch;
  73         union {
  74                 struct vmw_buffer_object *buf;
  75                 u32 sid;
  76         };
  77 };
  78
  79 /*
  80  * SVGA commands that are used by this code. Please see the device headers
  81  * for explanation.
  82  */
  83 struct vmw_stdu_update {
  84         SVGA3dCmdHeader header;
  85         SVGA3dCmdUpdateGBScreenTarget body;
  86 };
  87
  88 struct vmw_stdu_dma {
  89         SVGA3dCmdHeader     header;
  90         SVGA3dCmdSurfaceDMA body;
  91 };
  92
  93 struct vmw_stdu_surface_copy {
  94         SVGA3dCmdHeader      header;
  95         SVGA3dCmdSurfaceCopy body;
  96 };
  97
  98 struct vmw_stdu_update_gb_image {
  99         SVGA3dCmdHeader header;
 100         SVGA3dCmdUpdateGBImage body;
 101 };
 102
 103 /**
 104  * struct vmw_screen_target_display_unit
 105  *
 106  * @base: VMW specific DU structure
 107  * @display_srf: surface to be displayed.  The dimension of this will always
 108  *               match the display mode.  If the display mode matches
 109  *               content_vfbs dimensions, then this is a pointer into the
 110  *               corresponding field in content_vfbs.  If not, then this
 111  *               is a separate buffer to which content_vfbs will blit to.
 112  * @content_type:  content_fb type
 113  * @defined:  true if the current display unit has been initialized
 114  */
 115 struct vmw_screen_target_display_unit {
 116         struct vmw_display_unit base;
 117         struct vmw_surface *display_srf;
 118         enum stdu_content_type content_fb_type;
 119         s32 display_width, display_height;
 120
 121         bool defined;
 122
 123         /* For CPU Blit */
 124         unsigned int cpp;
 125 };
 126
 127
 128
 129 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
 130
 131
 132
 133 /******************************************************************************
 134  * Screen Target Display Unit CRTC Functions
 135  *****************************************************************************/
 136
 137
 138 /**
 139  * vmw_stdu_crtc_destroy - cleans up the STDU
 140  *
 141  * @crtc: used to get a reference to the containing STDU
 142  */
 143 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
 144 {
 145         vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
 146 }
 147
 148 /**
 149  * vmw_stdu_define_st - Defines a Screen Target
 150  *
 151  * @dev_priv:  VMW DRM device
 152  * @stdu: display unit to create a Screen Target for
 153  * @mode: The mode to set.
 154  * @crtc_x: X coordinate of screen target relative to framebuffer origin.
 155  * @crtc_y: Y coordinate of screen target relative to framebuffer origin.
 156  *
 157  * Creates a STDU that we can used later.  This function is called whenever the
 158  * framebuffer size changes.
 159  *
 160  * RETURNs:
 161  * 0 on success, error code on failure
 162  */
 163 static int vmw_stdu_define_st(struct vmw_private *dev_priv,
 164                               struct vmw_screen_target_display_unit *stdu,
 165                               struct drm_display_mode *mode,
 166                               int crtc_x, int crtc_y)
 167 {
 168         struct {
 169                 SVGA3dCmdHeader header;
 170                 SVGA3dCmdDefineGBScreenTarget body;
 171         } *cmd;
 172
 173         cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
 174         if (unlikely(cmd == NULL))
 175                 return -ENOMEM;
 176
 177         cmd->header.id   = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
 178         cmd->header.size = sizeof(cmd->body);
 179
 180         cmd->body.stid   = stdu->base.unit;
 181         cmd->body.width  = mode->hdisplay;
 182         cmd->body.height = mode->vdisplay;
 183         cmd->body.flags  = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
 184         cmd->body.dpi    = 0;
 185         cmd->body.xRoot  = crtc_x;
 186         cmd->body.yRoot  = crtc_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         if (unlikely(cmd == NULL))
 234                 return -ENOMEM;
 235
 236         cmd->header.id   = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
 237         cmd->header.size = sizeof(cmd->body);
 238
 239         cmd->body.stid   = stdu->base.unit;
 240         cmd->body.image  = image;
 241
 242         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 243
 244         return 0;
 245 }
 246
 247 /**
 248  * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
 249  * bounding box.
 250  *
 251  * @cmd: Pointer to command stream.
 252  * @unit: Screen target unit.
 253  * @left: Left side of bounding box.
 254  * @right: Right side of bounding box.
 255  * @top: Top side of bounding box.
 256  * @bottom: Bottom side of bounding box.
 257  */
 258 static void vmw_stdu_populate_update(void *cmd, int unit,
 259                                      s32 left, s32 right, s32 top, s32 bottom)
 260 {
 261         struct vmw_stdu_update *update = cmd;
 262
 263         update->header.id   = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
 264         update->header.size = sizeof(update->body);
 265
 266         update->body.stid   = unit;
 267         update->body.rect.x = left;
 268         update->body.rect.y = top;
 269         update->body.rect.w = right - left;
 270         update->body.rect.h = bottom - top;
 271 }
 272
 273 /**
 274  * vmw_stdu_update_st - Full update of a Screen Target
 275  *
 276  * @dev_priv: VMW DRM device
 277  * @stdu: display unit affected
 278  *
 279  * This function needs to be called whenever the content of a screen
 280  * target has changed completely. Typically as a result of a backing
 281  * surface change.
 282  *
 283  * RETURNS:
 284  * 0 on success, error code on failure
 285  */
 286 static int vmw_stdu_update_st(struct vmw_private *dev_priv,
 287                               struct vmw_screen_target_display_unit *stdu)
 288 {
 289         struct vmw_stdu_update *cmd;
 290
 291         if (!stdu->defined) {
 292                 DRM_ERROR("No screen target defined");
 293                 return -EINVAL;
 294         }
 295
 296         cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
 297         if (unlikely(cmd == NULL))
 298                 return -ENOMEM;
 299
 300         vmw_stdu_populate_update(cmd, stdu->base.unit,
 301                                  0, stdu->display_width,
 302                                  0, stdu->display_height);
 303
 304         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 305
 306         return 0;
 307 }
 308
 309
 310
 311 /**
 312  * vmw_stdu_destroy_st - Destroy a Screen Target
 313  *
 314  * @dev_priv:  VMW DRM device
 315  * @stdu: display unit to destroy
 316  */
 317 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
 318                                struct vmw_screen_target_display_unit *stdu)
 319 {
 320         int    ret;
 321
 322         struct {
 323                 SVGA3dCmdHeader header;
 324                 SVGA3dCmdDestroyGBScreenTarget body;
 325         } *cmd;
 326
 327
 328         /* Nothing to do if not successfully defined */
 329         if (unlikely(!stdu->defined))
 330                 return 0;
 331
 332         cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
 333         if (unlikely(cmd == NULL))
 334                 return -ENOMEM;
 335
 336         cmd->header.id   = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
 337         cmd->header.size = sizeof(cmd->body);
 338
 339         cmd->body.stid   = stdu->base.unit;
 340
 341         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 342
 343         /* Force sync */
 344         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 345         if (unlikely(ret != 0))
 346                 DRM_ERROR("Failed to sync with HW");
 347
 348         stdu->defined = false;
 349         stdu->display_width  = 0;
 350         stdu->display_height = 0;
 351
 352         return ret;
 353 }
 354
 355
 356 /**
 357  * vmw_stdu_crtc_mode_set_nofb - Updates screen target size
 358  *
 359  * @crtc: CRTC associated with the screen target
 360  *
 361  * This function defines/destroys a screen target
 362  *
 363  */
 364 static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 365 {
 366         struct vmw_private *dev_priv;
 367         struct vmw_screen_target_display_unit *stdu;
 368         struct drm_connector_state *conn_state;
 369         struct vmw_connector_state *vmw_conn_state;
 370         int x, y, ret;
 371
 372         stdu = vmw_crtc_to_stdu(crtc);
 373         dev_priv = vmw_priv(crtc->dev);
 374         conn_state = stdu->base.connector.state;
 375         vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
 376
 377         if (stdu->defined) {
 378                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 379                 if (ret)
 380                         DRM_ERROR("Failed to blank CRTC\n");
 381
 382                 (void) vmw_stdu_update_st(dev_priv, stdu);
 383
 384                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 385                 if (ret)
 386                         DRM_ERROR("Failed to destroy Screen Target\n");
 387
 388                 stdu->content_fb_type = SAME_AS_DISPLAY;
 389         }
 390
 391         if (!crtc->state->enable)
 392                 return;
 393
 394         x = vmw_conn_state->gui_x;
 395         y = vmw_conn_state->gui_y;
 396
 397         vmw_svga_enable(dev_priv);
 398         ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, x, y);
 399
 400         if (ret)
 401                 DRM_ERROR("Failed to define Screen Target of size %dx%d\n",
 402                           crtc->x, crtc->y);
 403 }
 404
 405
 406 static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
 407 {
 408 }
 409
 410 static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
 411                                         struct drm_atomic_state *state)
 412 {
 413 }
 414
 415 static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
 416                                          struct drm_atomic_state *state)
 417 {
 418         struct vmw_private *dev_priv;
 419         struct vmw_screen_target_display_unit *stdu;
 420         int ret;
 421
 422
 423         if (!crtc) {
 424                 DRM_ERROR("CRTC is NULL\n");
 425                 return;
 426         }
 427
 428         stdu     = vmw_crtc_to_stdu(crtc);
 429         dev_priv = vmw_priv(crtc->dev);
 430
 431         if (stdu->defined) {
 432                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 433                 if (ret)
 434                         DRM_ERROR("Failed to blank CRTC\n");
 435
 436                 (void) vmw_stdu_update_st(dev_priv, stdu);
 437
 438                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 439                 if (ret)
 440                         DRM_ERROR("Failed to destroy Screen Target\n");
 441
 442                 stdu->content_fb_type = SAME_AS_DISPLAY;
 443         }
 444 }
 445
 446 /**
 447  * vmw_stdu_bo_clip - Callback to encode a suface DMA command cliprect
 448  *
 449  * @dirty: The closure structure.
 450  *
 451  * Encodes a surface DMA command cliprect and updates the bounding box
 452  * for the DMA.
 453  */
 454 static void vmw_stdu_bo_clip(struct vmw_kms_dirty *dirty)
 455 {
 456         struct vmw_stdu_dirty *ddirty =
 457                 container_of(dirty, struct vmw_stdu_dirty, base);
 458         struct vmw_stdu_dma *cmd = dirty->cmd;
 459         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 460
 461         blit += dirty->num_hits;
 462         blit->srcx = dirty->fb_x;
 463         blit->srcy = dirty->fb_y;
 464         blit->x = dirty->unit_x1;
 465         blit->y = dirty->unit_y1;
 466         blit->d = 1;
 467         blit->w = dirty->unit_x2 - dirty->unit_x1;
 468         blit->h = dirty->unit_y2 - dirty->unit_y1;
 469         dirty->num_hits++;
 470
 471         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
 472                 return;
 473
 474         /* Destination bounding box */
 475         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 476         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 477         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 478         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 479 }
 480
 481 /**
 482  * vmw_stdu_bo_fifo_commit - Callback to fill in and submit a DMA command.
 483  *
 484  * @dirty: The closure structure.
 485  *
 486  * Fills in the missing fields in a DMA command, and optionally encodes
 487  * a screen target update command, depending on transfer direction.
 488  */
 489 static void vmw_stdu_bo_fifo_commit(struct vmw_kms_dirty *dirty)
 490 {
 491         struct vmw_stdu_dirty *ddirty =
 492                 container_of(dirty, struct vmw_stdu_dirty, base);
 493         struct vmw_screen_target_display_unit *stdu =
 494                 container_of(dirty->unit, typeof(*stdu), base);
 495         struct vmw_stdu_dma *cmd = dirty->cmd;
 496         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 497         SVGA3dCmdSurfaceDMASuffix *suffix =
 498                 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
 499         size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
 500
 501         if (!dirty->num_hits) {
 502                 vmw_fifo_commit(dirty->dev_priv, 0);
 503                 return;
 504         }
 505
 506         cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
 507         cmd->header.size = sizeof(cmd->body) + blit_size;
 508         vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
 509         cmd->body.guest.pitch = ddirty->pitch;
 510         cmd->body.host.sid = stdu->display_srf->res.id;
 511         cmd->body.host.face = 0;
 512         cmd->body.host.mipmap = 0;
 513         cmd->body.transfer = ddirty->transfer;
 514         suffix->suffixSize = sizeof(*suffix);
 515         suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
 516
 517         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 518                 blit_size += sizeof(struct vmw_stdu_update);
 519
 520                 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
 521                                          ddirty->left, ddirty->right,
 522                                          ddirty->top, ddirty->bottom);
 523         }
 524
 525         vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
 526
 527         stdu->display_srf->res.res_dirty = true;
 528         ddirty->left = ddirty->top = S32_MAX;
 529         ddirty->right = ddirty->bottom = S32_MIN;
 530 }
 531
 532
 533 /**
 534  * vmw_stdu_bo_cpu_clip - Callback to encode a CPU blit
 535  *
 536  * @dirty: The closure structure.
 537  *
 538  * This function calculates the bounding box for all the incoming clips.
 539  */
 540 static void vmw_stdu_bo_cpu_clip(struct vmw_kms_dirty *dirty)
 541 {
 542         struct vmw_stdu_dirty *ddirty =
 543                 container_of(dirty, struct vmw_stdu_dirty, base);
 544
 545         dirty->num_hits = 1;
 546
 547         /* Calculate destination bounding box */
 548         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 549         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 550         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 551         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 552
 553         /*
 554          * Calculate content bounding box.  We only need the top-left
 555          * coordinate because width and height will be the same as the
 556          * destination bounding box above
 557          */
 558         ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
 559         ddirty->fb_top  = min_t(s32, ddirty->fb_top, dirty->fb_y);
 560 }
 561
 562
 563 /**
 564  * vmw_stdu_bo_cpu_commit - Callback to do a CPU blit from buffer object
 565  *
 566  * @dirty: The closure structure.
 567  *
 568  * For the special case when we cannot create a proxy surface in a
 569  * 2D VM, we have to do a CPU blit ourselves.
 570  */
 571 static void vmw_stdu_bo_cpu_commit(struct vmw_kms_dirty *dirty)
 572 {
 573         struct vmw_stdu_dirty *ddirty =
 574                 container_of(dirty, struct vmw_stdu_dirty, base);
 575         struct vmw_screen_target_display_unit *stdu =
 576                 container_of(dirty->unit, typeof(*stdu), base);
 577         s32 width, height;
 578         s32 src_pitch, dst_pitch;
 579         struct ttm_buffer_object *src_bo, *dst_bo;
 580         u32 src_offset, dst_offset;
 581         struct vmw_diff_cpy diff = VMW_CPU_BLIT_DIFF_INITIALIZER(stdu->cpp);
 582
 583         if (!dirty->num_hits)
 584                 return;
 585
 586         width = ddirty->right - ddirty->left;
 587         height = ddirty->bottom - ddirty->top;
 588
 589         if (width == 0 || height == 0)
 590                 return;
 591
 592         /* Assume we are blitting from Guest (bo) to Host (display_srf) */
 593         dst_pitch = stdu->display_srf->metadata.base_size.width * stdu->cpp;
 594         dst_bo = &stdu->display_srf->res.backup->base;
 595         dst_offset = ddirty->top * dst_pitch + ddirty->left * stdu->cpp;
 596
 597         src_pitch = ddirty->pitch;
 598         src_bo = &ddirty->buf->base;
 599         src_offset = ddirty->fb_top * src_pitch + ddirty->fb_left * stdu->cpp;
 600
 601         /* Swap src and dst if the assumption was wrong. */
 602         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM) {
 603                 swap(dst_pitch, src_pitch);
 604                 swap(dst_bo, src_bo);
 605                 swap(src_offset, dst_offset);
 606         }
 607
 608         (void) vmw_bo_cpu_blit(dst_bo, dst_offset, dst_pitch,
 609                                src_bo, src_offset, src_pitch,
 610                                width * stdu->cpp, height, &diff);
 611
 612         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM &&
 613             drm_rect_visible(&diff.rect)) {
 614                 struct vmw_private *dev_priv;
 615                 struct vmw_stdu_update *cmd;
 616                 struct drm_clip_rect region;
 617                 int ret;
 618
 619                 /* We are updating the actual surface, not a proxy */
 620                 region.x1 = diff.rect.x1;
 621                 region.x2 = diff.rect.x2;
 622                 region.y1 = diff.rect.y1;
 623                 region.y2 = diff.rect.y2;
 624                 ret = vmw_kms_update_proxy(&stdu->display_srf->res, &region,
 625                                            1, 1);
 626                 if (ret)
 627                         goto out_cleanup;
 628
 629
 630                 dev_priv = vmw_priv(stdu->base.crtc.dev);
 631                 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
 632                 if (!cmd)
 633                         goto out_cleanup;
 634
 635                 vmw_stdu_populate_update(cmd, stdu->base.unit,
 636                                          region.x1, region.x2,
 637                                          region.y1, region.y2);
 638
 639                 vmw_fifo_commit(dev_priv, sizeof(*cmd));
 640         }
 641
 642 out_cleanup:
 643         ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
 644         ddirty->right = ddirty->bottom = S32_MIN;
 645 }
 646
 647 /**
 648  * vmw_kms_stdu_dma - Perform a DMA transfer between a buffer-object backed
 649  * framebuffer and the screen target system.
 650  *
 651  * @dev_priv: Pointer to the device private structure.
 652  * @file_priv: Pointer to a struct drm-file identifying the caller. May be
 653  * set to NULL, but then @user_fence_rep must also be set to NULL.
 654  * @vfb: Pointer to the buffer-object backed framebuffer.
 655  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 656  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 657  * be NULL.
 658  * @num_clips: Number of clip rects in @clips or @vclips.
 659  * @increment: Increment to use when looping over @clips or @vclips.
 660  * @to_surface: Whether to DMA to the screen target system as opposed to
 661  * from the screen target system.
 662  * @interruptible: Whether to perform waits interruptible if possible.
 663  * @crtc: If crtc is passed, perform stdu dma on that crtc only.
 664  *
 665  * If DMA-ing till the screen target system, the function will also notify
 666  * the screen target system that a bounding box of the cliprects has been
 667  * updated.
 668  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 669  * interrupted.
 670  */
 671 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 672                      struct drm_file *file_priv,
 673                      struct vmw_framebuffer *vfb,
 674                      struct drm_vmw_fence_rep __user *user_fence_rep,
 675                      struct drm_clip_rect *clips,
 676                      struct drm_vmw_rect *vclips,
 677                      uint32_t num_clips,
 678                      int increment,
 679                      bool to_surface,
 680                      bool interruptible,
 681                      struct drm_crtc *crtc)
 682 {
 683         struct vmw_buffer_object *buf =
 684                 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
 685         struct vmw_stdu_dirty ddirty;
 686         int ret;
 687         bool cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
 688         DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 689
 690         /*
 691          * VMs without 3D support don't have the surface DMA command and
 692          * we'll be using a CPU blit, and the framebuffer should be moved out
 693          * of VRAM.
 694          */
 695         ret = vmw_validation_add_bo(&val_ctx, buf, false, cpu_blit);
 696         if (ret)
 697                 return ret;
 698
 699         ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
 700         if (ret)
 701                 goto out_unref;
 702
 703         ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 704                 SVGA3D_READ_HOST_VRAM;
 705         ddirty.left = ddirty.top = S32_MAX;
 706         ddirty.right = ddirty.bottom = S32_MIN;
 707         ddirty.fb_left = ddirty.fb_top = S32_MAX;
 708         ddirty.pitch = vfb->base.pitches[0];
 709         ddirty.buf = buf;
 710         ddirty.base.fifo_commit = vmw_stdu_bo_fifo_commit;
 711         ddirty.base.clip = vmw_stdu_bo_clip;
 712         ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
 713                 num_clips * sizeof(SVGA3dCopyBox) +
 714                 sizeof(SVGA3dCmdSurfaceDMASuffix);
 715         if (to_surface)
 716                 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
 717
 718
 719         if (cpu_blit) {
 720                 ddirty.base.fifo_commit = vmw_stdu_bo_cpu_commit;
 721                 ddirty.base.clip = vmw_stdu_bo_cpu_clip;
 722                 ddirty.base.fifo_reserve_size = 0;
 723         }
 724
 725         ddirty.base.crtc = crtc;
 726
 727         ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 728                                    0, 0, num_clips, increment, &ddirty.base);
 729
 730         vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
 731                                          user_fence_rep);
 732         return ret;
 733
 734 out_unref:
 735         vmw_validation_unref_lists(&val_ctx);
 736         return ret;
 737 }
 738
 739 /**
 740  * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
 741  *
 742  * @dirty: The closure structure.
 743  *
 744  * Encodes a surface copy command cliprect and updates the bounding box
 745  * for the copy.
 746  */
 747 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
 748 {
 749         struct vmw_stdu_dirty *sdirty =
 750                 container_of(dirty, struct vmw_stdu_dirty, base);
 751         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 752         struct vmw_screen_target_display_unit *stdu =
 753                 container_of(dirty->unit, typeof(*stdu), base);
 754
 755         if (sdirty->sid != stdu->display_srf->res.id) {
 756                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 757
 758                 blit += dirty->num_hits;
 759                 blit->srcx = dirty->fb_x;
 760                 blit->srcy = dirty->fb_y;
 761                 blit->x = dirty->unit_x1;
 762                 blit->y = dirty->unit_y1;
 763                 blit->d = 1;
 764                 blit->w = dirty->unit_x2 - dirty->unit_x1;
 765                 blit->h = dirty->unit_y2 - dirty->unit_y1;
 766         }
 767
 768         dirty->num_hits++;
 769
 770         /* Destination bounding box */
 771         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 772         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 773         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 774         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 775 }
 776
 777 /**
 778  * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
 779  * copy command.
 780  *
 781  * @dirty: The closure structure.
 782  *
 783  * Fills in the missing fields in a surface copy command, and encodes a screen
 784  * target update command.
 785  */
 786 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 787 {
 788         struct vmw_stdu_dirty *sdirty =
 789                 container_of(dirty, struct vmw_stdu_dirty, base);
 790         struct vmw_screen_target_display_unit *stdu =
 791                 container_of(dirty->unit, typeof(*stdu), base);
 792         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 793         struct vmw_stdu_update *update;
 794         size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
 795         size_t commit_size;
 796
 797         if (!dirty->num_hits) {
 798                 vmw_fifo_commit(dirty->dev_priv, 0);
 799                 return;
 800         }
 801
 802         if (sdirty->sid != stdu->display_srf->res.id) {
 803                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 804
 805                 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
 806                 cmd->header.size = sizeof(cmd->body) + blit_size;
 807                 cmd->body.src.sid = sdirty->sid;
 808                 cmd->body.dest.sid = stdu->display_srf->res.id;
 809                 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
 810                 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
 811                 stdu->display_srf->res.res_dirty = true;
 812         } else {
 813                 update = dirty->cmd;
 814                 commit_size = sizeof(*update);
 815         }
 816
 817         vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
 818                                  sdirty->right, sdirty->top, sdirty->bottom);
 819
 820         vmw_fifo_commit(dirty->dev_priv, commit_size);
 821
 822         sdirty->left = sdirty->top = S32_MAX;
 823         sdirty->right = sdirty->bottom = S32_MIN;
 824 }
 825
 826 /**
 827  * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
 828  *
 829  * @dev_priv: Pointer to the device private structure.
 830  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 831  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 832  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 833  * be NULL.
 834  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 835  * to @framebuffer will be used.
 836  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 837  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 838  * @num_clips: Number of clip rects in @clips.
 839  * @inc: Increment to use when looping over @clips.
 840  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 841  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 842  * case the device has already synchronized.
 843  * @crtc: If crtc is passed, perform surface dirty on that crtc only.
 844  *
 845  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 846  * interrupted.
 847  */
 848 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
 849                                struct vmw_framebuffer *framebuffer,
 850                                struct drm_clip_rect *clips,
 851                                struct drm_vmw_rect *vclips,
 852                                struct vmw_resource *srf,
 853                                s32 dest_x,
 854                                s32 dest_y,
 855                                unsigned num_clips, int inc,
 856                                struct vmw_fence_obj **out_fence,
 857                                struct drm_crtc *crtc)
 858 {
 859         struct vmw_framebuffer_surface *vfbs =
 860                 container_of(framebuffer, typeof(*vfbs), base);
 861         struct vmw_stdu_dirty sdirty;
 862         DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
 863         int ret;
 864
 865         if (!srf)
 866                 srf = &vfbs->surface->res;
 867
 868         ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE,
 869                                           NULL, NULL);
 870         if (ret)
 871                 return ret;
 872
 873         ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
 874         if (ret)
 875                 goto out_unref;
 876
 877         if (vfbs->is_bo_proxy) {
 878                 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
 879                 if (ret)
 880                         goto out_finish;
 881         }
 882
 883         sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
 884         sdirty.base.clip = vmw_kms_stdu_surface_clip;
 885         sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
 886                 sizeof(SVGA3dCopyBox) * num_clips +
 887                 sizeof(struct vmw_stdu_update);
 888         sdirty.base.crtc = crtc;
 889         sdirty.sid = srf->id;
 890         sdirty.left = sdirty.top = S32_MAX;
 891         sdirty.right = sdirty.bottom = S32_MIN;
 892
 893         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 894                                    dest_x, dest_y, num_clips, inc,
 895                                    &sdirty.base);
 896 out_finish:
 897         vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
 898                                          NULL);
 899
 900         return ret;
 901
 902 out_unref:
 903         vmw_validation_unref_lists(&val_ctx);
 904         return ret;
 905 }
 906
 907
 908 /*
 909  *  Screen Target CRTC dispatch table
 910  */
 911 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
 912         .gamma_set = vmw_du_crtc_gamma_set,
 913         .destroy = vmw_stdu_crtc_destroy,
 914         .reset = vmw_du_crtc_reset,
 915         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
 916         .atomic_destroy_state = vmw_du_crtc_destroy_state,
 917         .set_config = drm_atomic_helper_set_config,
 918         .page_flip = drm_atomic_helper_page_flip,
 919         .get_vblank_counter = vmw_get_vblank_counter,
 920         .enable_vblank = vmw_enable_vblank,
 921         .disable_vblank = vmw_disable_vblank,
 922 };
 923
 924
 925
 926 /******************************************************************************
 927  * Screen Target Display Unit Encoder Functions
 928  *****************************************************************************/
 929
 930 /**
 931  * vmw_stdu_encoder_destroy - cleans up the STDU
 932  *
 933  * @encoder: used the get the containing STDU
 934  *
 935  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
 936  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
 937  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
 938  * get called.
 939  */
 940 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
 941 {
 942         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
 943 }
 944
 945 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
 946         .destroy = vmw_stdu_encoder_destroy,
 947 };
 948
 949
 950
 951 /******************************************************************************
 952  * Screen Target Display Unit Connector Functions
 953  *****************************************************************************/
 954
 955 /**
 956  * vmw_stdu_connector_destroy - cleans up the STDU
 957  *
 958  * @connector: used to get the containing STDU
 959  *
 960  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
 961  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
 962  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
 963  * get called.
 964  */
 965 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
 966 {
 967         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
 968 }
 969
 970
 971
 972 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
 973         .dpms = vmw_du_connector_dpms,
 974         .detect = vmw_du_connector_detect,
 975         .fill_modes = vmw_du_connector_fill_modes,
 976         .destroy = vmw_stdu_connector_destroy,
 977         .reset = vmw_du_connector_reset,
 978         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
 979         .atomic_destroy_state = vmw_du_connector_destroy_state,
 980 };
 981
 982
 983 static const struct
 984 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
 985 };
 986
 987
 988
 989 /******************************************************************************
 990  * Screen Target Display Plane Functions
 991  *****************************************************************************/
 992
 993
 994
 995 /**
 996  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
 997  *
 998  * @plane:  display plane
 999  * @old_state: Contains the FB to clean up
1000  *
1001  * Unpins the display surface
1002  *
1003  * Returns 0 on success
1004  */
1005 static void
1006 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1007                                   struct drm_plane_state *old_state)
1008 {
1009         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1010
1011         if (vps->surf)
1012                 WARN_ON(!vps->pinned);
1013
1014         vmw_du_plane_cleanup_fb(plane, old_state);
1015
1016         vps->content_fb_type = SAME_AS_DISPLAY;
1017         vps->cpp = 0;
1018 }
1019
1020
1021
1022 /**
1023  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1024  *
1025  * @plane:  display plane
1026  * @new_state: info on the new plane state, including the FB
1027  *
1028  * This function allocates a new display surface if the content is
1029  * backed by a buffer object.  The display surface is pinned here, and it'll
1030  * be unpinned in .cleanup_fb()
1031  *
1032  * Returns 0 on success
1033  */
1034 static int
1035 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1036                                   struct drm_plane_state *new_state)
1037 {
1038         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1039         struct drm_framebuffer *new_fb = new_state->fb;
1040         struct vmw_framebuffer *vfb;
1041         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1042         enum stdu_content_type new_content_type;
1043         struct vmw_framebuffer_surface *new_vfbs;
1044         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1045         int ret;
1046
1047         /* No FB to prepare */
1048         if (!new_fb) {
1049                 if (vps->surf) {
1050                         WARN_ON(vps->pinned != 0);
1051                         vmw_surface_unreference(&vps->surf);
1052                 }
1053
1054                 return 0;
1055         }
1056
1057         vfb = vmw_framebuffer_to_vfb(new_fb);
1058         new_vfbs = (vfb->bo) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1059
1060         if (new_vfbs &&
1061             new_vfbs->surface->metadata.base_size.width == hdisplay &&
1062             new_vfbs->surface->metadata.base_size.height == vdisplay)
1063                 new_content_type = SAME_AS_DISPLAY;
1064         else if (vfb->bo)
1065                 new_content_type = SEPARATE_BO;
1066         else
1067                 new_content_type = SEPARATE_SURFACE;
1068
1069         if (new_content_type != SAME_AS_DISPLAY) {
1070                 struct vmw_surface_metadata metadata = {0};
1071
1072                 /*
1073                  * If content buffer is a buffer object, then we have to
1074                  * construct surface info
1075                  */
1076                 if (new_content_type == SEPARATE_BO) {
1077
1078                         switch (new_fb->format->cpp[0]*8) {
1079                         case 32:
1080                                 metadata.format = SVGA3D_X8R8G8B8;
1081                                 break;
1082
1083                         case 16:
1084                                 metadata.format = SVGA3D_R5G6B5;
1085                                 break;
1086
1087                         case 8:
1088                                 metadata.format = SVGA3D_P8;
1089                                 break;
1090
1091                         default:
1092                                 DRM_ERROR("Invalid format\n");
1093                                 return -EINVAL;
1094                         }
1095
1096                         metadata.mip_levels[0] = 1;
1097                         metadata.num_sizes = 1;
1098                         metadata.scanout = true;
1099                 } else {
1100                         metadata = new_vfbs->surface->metadata;
1101                 }
1102
1103                 metadata.base_size.width = hdisplay;
1104                 metadata.base_size.height = vdisplay;
1105                 metadata.base_size.depth = 1;
1106
1107                 if (vps->surf) {
1108                         struct drm_vmw_size cur_base_size =
1109                                 vps->surf->metadata.base_size;
1110
1111                         if (cur_base_size.width != metadata.base_size.width ||
1112                             cur_base_size.height != metadata.base_size.height ||
1113                             vps->surf->metadata.format != metadata.format) {
1114                                 WARN_ON(vps->pinned != 0);
1115                                 vmw_surface_unreference(&vps->surf);
1116                         }
1117
1118                 }
1119
1120                 if (!vps->surf) {
1121                         ret = vmw_gb_surface_define(dev_priv, 0, &metadata,
1122                                                     &vps->surf);
1123                         if (ret != 0) {
1124                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1125                                 return ret;
1126                         }
1127                 }
1128         } else {
1129                 /*
1130                  * prepare_fb and clean_fb should only take care of pinning
1131                  * and unpinning.  References are tracked by state objects.
1132                  * The only time we add a reference in prepare_fb is if the
1133                  * state object doesn't have a reference to begin with
1134                  */
1135                 if (vps->surf) {
1136                         WARN_ON(vps->pinned != 0);
1137                         vmw_surface_unreference(&vps->surf);
1138                 }
1139
1140                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1141         }
1142
1143         if (vps->surf) {
1144
1145                 /* Pin new surface before flipping */
1146                 ret = vmw_resource_pin(&vps->surf->res, false);
1147                 if (ret)
1148                         goto out_srf_unref;
1149
1150                 vps->pinned++;
1151         }
1152
1153         vps->content_fb_type = new_content_type;
1154
1155         /*
1156          * This should only happen if the buffer object is too large to create a
1157          * proxy surface for.
1158          * If we are a 2D VM with a buffer object then we have to use CPU blit
1159          * so cache these mappings
1160          */
1161         if (vps->content_fb_type == SEPARATE_BO &&
1162             !(dev_priv->capabilities & SVGA_CAP_3D))
1163                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1164
1165         return 0;
1166
1167 out_srf_unref:
1168         vmw_surface_unreference(&vps->surf);
1169         return ret;
1170 }
1171
1172 static uint32_t vmw_stdu_bo_fifo_size(struct vmw_du_update_plane *update,
1173                                       uint32_t num_hits)
1174 {
1175         return sizeof(struct vmw_stdu_dma) + sizeof(SVGA3dCopyBox) * num_hits +
1176                 sizeof(SVGA3dCmdSurfaceDMASuffix) +
1177                 sizeof(struct vmw_stdu_update);
1178 }
1179
1180 static uint32_t vmw_stdu_bo_fifo_size_cpu(struct vmw_du_update_plane *update,
1181                                           uint32_t num_hits)
1182 {
1183         return sizeof(struct vmw_stdu_update_gb_image) +
1184                 sizeof(struct vmw_stdu_update);
1185 }
1186
1187 static uint32_t vmw_stdu_bo_populate_dma(struct vmw_du_update_plane  *update,
1188                                          void *cmd, uint32_t num_hits)
1189 {
1190         struct vmw_screen_target_display_unit *stdu;
1191         struct vmw_framebuffer_bo *vfbbo;
1192         struct vmw_stdu_dma *cmd_dma = cmd;
1193
1194         stdu = container_of(update->du, typeof(*stdu), base);
1195         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1196
1197         cmd_dma->header.id = SVGA_3D_CMD_SURFACE_DMA;
1198         cmd_dma->header.size = sizeof(cmd_dma->body) +
1199                 sizeof(struct SVGA3dCopyBox) * num_hits +
1200                 sizeof(SVGA3dCmdSurfaceDMASuffix);
1201         vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &cmd_dma->body.guest.ptr);
1202         cmd_dma->body.guest.pitch = update->vfb->base.pitches[0];
1203         cmd_dma->body.host.sid = stdu->display_srf->res.id;
1204         cmd_dma->body.host.face = 0;
1205         cmd_dma->body.host.mipmap = 0;
1206         cmd_dma->body.transfer = SVGA3D_WRITE_HOST_VRAM;
1207
1208         return sizeof(*cmd_dma);
1209 }
1210
1211 static uint32_t vmw_stdu_bo_populate_clip(struct vmw_du_update_plane  *update,
1212                                           void *cmd, struct drm_rect *clip,
1213                                           uint32_t fb_x, uint32_t fb_y)
1214 {
1215         struct SVGA3dCopyBox *box = cmd;
1216
1217         box->srcx = fb_x;
1218         box->srcy = fb_y;
1219         box->srcz = 0;
1220         box->x = clip->x1;
1221         box->y = clip->y1;
1222         box->z = 0;
1223         box->w = drm_rect_width(clip);
1224         box->h = drm_rect_height(clip);
1225         box->d = 1;
1226
1227         return sizeof(*box);
1228 }
1229
1230 static uint32_t vmw_stdu_bo_populate_update(struct vmw_du_update_plane  *update,
1231                                             void *cmd, struct drm_rect *bb)
1232 {
1233         struct vmw_screen_target_display_unit *stdu;
1234         struct vmw_framebuffer_bo *vfbbo;
1235         SVGA3dCmdSurfaceDMASuffix *suffix = cmd;
1236
1237         stdu = container_of(update->du, typeof(*stdu), base);
1238         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1239
1240         suffix->suffixSize = sizeof(*suffix);
1241         suffix->maximumOffset = vfbbo->buffer->base.num_pages * PAGE_SIZE;
1242
1243         vmw_stdu_populate_update(&suffix[1], stdu->base.unit, bb->x1, bb->x2,
1244                                  bb->y1, bb->y2);
1245
1246         return sizeof(*suffix) + sizeof(struct vmw_stdu_update);
1247 }
1248
1249 static uint32_t vmw_stdu_bo_pre_clip_cpu(struct vmw_du_update_plane  *update,
1250                                          void *cmd, uint32_t num_hits)
1251 {
1252         struct vmw_du_update_plane_buffer *bo_update =
1253                 container_of(update, typeof(*bo_update), base);
1254
1255         bo_update->fb_left = INT_MAX;
1256         bo_update->fb_top = INT_MAX;
1257
1258         return 0;
1259 }
1260
1261 static uint32_t vmw_stdu_bo_clip_cpu(struct vmw_du_update_plane  *update,
1262                                      void *cmd, struct drm_rect *clip,
1263                                      uint32_t fb_x, uint32_t fb_y)
1264 {
1265         struct vmw_du_update_plane_buffer *bo_update =
1266                 container_of(update, typeof(*bo_update), base);
1267
1268         bo_update->fb_left = min_t(int, bo_update->fb_left, fb_x);
1269         bo_update->fb_top = min_t(int, bo_update->fb_top, fb_y);
1270
1271         return 0;
1272 }
1273
1274 static uint32_t
1275 vmw_stdu_bo_populate_update_cpu(struct vmw_du_update_plane  *update, void *cmd,
1276                                 struct drm_rect *bb)
1277 {
1278         struct vmw_du_update_plane_buffer *bo_update;
1279         struct vmw_screen_target_display_unit *stdu;
1280         struct vmw_framebuffer_bo *vfbbo;
1281         struct vmw_diff_cpy diff = VMW_CPU_BLIT_DIFF_INITIALIZER(0);
1282         struct vmw_stdu_update_gb_image *cmd_img = cmd;
1283         struct vmw_stdu_update *cmd_update;
1284         struct ttm_buffer_object *src_bo, *dst_bo;
1285         u32 src_offset, dst_offset;
1286         s32 src_pitch, dst_pitch;
1287         s32 width, height;
1288
1289         bo_update = container_of(update, typeof(*bo_update), base);
1290         stdu = container_of(update->du, typeof(*stdu), base);
1291         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1292
1293         width = bb->x2 - bb->x1;
1294         height = bb->y2 - bb->y1;
1295
1296         diff.cpp = stdu->cpp;
1297
1298         dst_bo = &stdu->display_srf->res.backup->base;
1299         dst_pitch = stdu->display_srf->metadata.base_size.width * stdu->cpp;
1300         dst_offset = bb->y1 * dst_pitch + bb->x1 * stdu->cpp;
1301
1302         src_bo = &vfbbo->buffer->base;
1303         src_pitch = update->vfb->base.pitches[0];
1304         src_offset = bo_update->fb_top * src_pitch + bo_update->fb_left *
1305                 stdu->cpp;
1306
1307         (void) vmw_bo_cpu_blit(dst_bo, dst_offset, dst_pitch, src_bo,
1308                                src_offset, src_pitch, width * stdu->cpp, height,
1309                                &diff);
1310
1311         if (drm_rect_visible(&diff.rect)) {
1312                 SVGA3dBox *box = &cmd_img->body.box;
1313
1314                 cmd_img->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1315                 cmd_img->header.size = sizeof(cmd_img->body);
1316                 cmd_img->body.image.sid = stdu->display_srf->res.id;
1317                 cmd_img->body.image.face = 0;
1318                 cmd_img->body.image.mipmap = 0;
1319
1320                 box->x = diff.rect.x1;
1321                 box->y = diff.rect.y1;
1322                 box->z = 0;
1323                 box->w = drm_rect_width(&diff.rect);
1324                 box->h = drm_rect_height(&diff.rect);
1325                 box->d = 1;
1326
1327                 cmd_update = (struct vmw_stdu_update *)&cmd_img[1];
1328                 vmw_stdu_populate_update(cmd_update, stdu->base.unit,
1329                                          diff.rect.x1, diff.rect.x2,
1330                                          diff.rect.y1, diff.rect.y2);
1331
1332                 return sizeof(*cmd_img) + sizeof(*cmd_update);
1333         }
1334
1335         return 0;
1336 }
1337
1338 /**
1339  * vmw_stdu_plane_update_bo - Update display unit for bo backed fb.
1340  * @dev_priv: device private.
1341  * @plane: plane state.
1342  * @old_state: old plane state.
1343  * @vfb: framebuffer which is blitted to display unit.
1344  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
1345  *             The returned fence pointer may be NULL in which case the device
1346  *             has already synchronized.
1347  *
1348  * Return: 0 on success or a negative error code on failure.
1349  */
1350 static int vmw_stdu_plane_update_bo(struct vmw_private *dev_priv,
1351                                     struct drm_plane *plane,
1352                                     struct drm_plane_state *old_state,
1353                                     struct vmw_framebuffer *vfb,
1354                                     struct vmw_fence_obj **out_fence)
1355 {
1356         struct vmw_du_update_plane_buffer bo_update;
1357
1358         memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
1359         bo_update.base.plane = plane;
1360         bo_update.base.old_state = old_state;
1361         bo_update.base.dev_priv = dev_priv;
1362         bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
1363         bo_update.base.vfb = vfb;
1364         bo_update.base.out_fence = out_fence;
1365         bo_update.base.mutex = NULL;
1366         bo_update.base.cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
1367         bo_update.base.intr = false;
1368
1369         /*
1370          * VM without 3D support don't have surface DMA command and framebuffer
1371          * should be moved out of VRAM.
1372          */
1373         if (bo_update.base.cpu_blit) {
1374                 bo_update.base.calc_fifo_size = vmw_stdu_bo_fifo_size_cpu;
1375                 bo_update.base.pre_clip = vmw_stdu_bo_pre_clip_cpu;
1376                 bo_update.base.clip = vmw_stdu_bo_clip_cpu;
1377                 bo_update.base.post_clip = vmw_stdu_bo_populate_update_cpu;
1378         } else {
1379                 bo_update.base.calc_fifo_size = vmw_stdu_bo_fifo_size;
1380                 bo_update.base.pre_clip = vmw_stdu_bo_populate_dma;
1381                 bo_update.base.clip = vmw_stdu_bo_populate_clip;
1382                 bo_update.base.post_clip = vmw_stdu_bo_populate_update;
1383         }
1384
1385         return vmw_du_helper_plane_update(&bo_update.base);
1386 }
1387
1388 static uint32_t
1389 vmw_stdu_surface_fifo_size_same_display(struct vmw_du_update_plane *update,
1390                                         uint32_t num_hits)
1391 {
1392         struct vmw_framebuffer_surface *vfbs;
1393         uint32_t size = 0;
1394
1395         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1396
1397         if (vfbs->is_bo_proxy)
1398                 size += sizeof(struct vmw_stdu_update_gb_image) * num_hits;
1399
1400         size += sizeof(struct vmw_stdu_update);
1401
1402         return size;
1403 }
1404
1405 static uint32_t vmw_stdu_surface_fifo_size(struct vmw_du_update_plane *update,
1406                                            uint32_t num_hits)
1407 {
1408         struct vmw_framebuffer_surface *vfbs;
1409         uint32_t size = 0;
1410
1411         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1412
1413         if (vfbs->is_bo_proxy)
1414                 size += sizeof(struct vmw_stdu_update_gb_image) * num_hits;
1415
1416         size += sizeof(struct vmw_stdu_surface_copy) + sizeof(SVGA3dCopyBox) *
1417                 num_hits + sizeof(struct vmw_stdu_update);
1418
1419         return size;
1420 }
1421
1422 static uint32_t
1423 vmw_stdu_surface_update_proxy(struct vmw_du_update_plane *update, void *cmd)
1424 {
1425         struct vmw_framebuffer_surface *vfbs;
1426         struct drm_plane_state *state = update->plane->state;
1427         struct drm_plane_state *old_state = update->old_state;
1428         struct vmw_stdu_update_gb_image *cmd_update = cmd;
1429         struct drm_atomic_helper_damage_iter iter;
1430         struct drm_rect clip;
1431         uint32_t copy_size = 0;
1432
1433         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1434
1435         /*
1436          * proxy surface is special where a buffer object type fb is wrapped
1437          * in a surface and need an update gb image command to sync with device.
1438          */
1439         drm_atomic_helper_damage_iter_init(&iter, old_state, state);
1440         drm_atomic_for_each_plane_damage(&iter, &clip) {
1441                 SVGA3dBox *box = &cmd_update->body.box;
1442
1443                 cmd_update->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1444                 cmd_update->header.size = sizeof(cmd_update->body);
1445                 cmd_update->body.image.sid = vfbs->surface->res.id;
1446                 cmd_update->body.image.face = 0;
1447                 cmd_update->body.image.mipmap = 0;
1448
1449                 box->x = clip.x1;
1450                 box->y = clip.y1;
1451                 box->z = 0;
1452                 box->w = drm_rect_width(&clip);
1453                 box->h = drm_rect_height(&clip);
1454                 box->d = 1;
1455
1456                 copy_size += sizeof(*cmd_update);
1457                 cmd_update++;
1458         }
1459
1460         return copy_size;
1461 }
1462
1463 static uint32_t
1464 vmw_stdu_surface_populate_copy(struct vmw_du_update_plane  *update, void *cmd,
1465                                uint32_t num_hits)
1466 {
1467         struct vmw_screen_target_display_unit *stdu;
1468         struct vmw_framebuffer_surface *vfbs;
1469         struct vmw_stdu_surface_copy *cmd_copy = cmd;
1470
1471         stdu = container_of(update->du, typeof(*stdu), base);
1472         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1473
1474         cmd_copy->header.id = SVGA_3D_CMD_SURFACE_COPY;
1475         cmd_copy->header.size = sizeof(cmd_copy->body) + sizeof(SVGA3dCopyBox) *
1476                 num_hits;
1477         cmd_copy->body.src.sid = vfbs->surface->res.id;
1478         cmd_copy->body.dest.sid = stdu->display_srf->res.id;
1479
1480         return sizeof(*cmd_copy);
1481 }
1482
1483 static uint32_t
1484 vmw_stdu_surface_populate_clip(struct vmw_du_update_plane  *update, void *cmd,
1485                                struct drm_rect *clip, uint32_t fb_x,
1486                                uint32_t fb_y)
1487 {
1488         struct SVGA3dCopyBox *box = cmd;
1489
1490         box->srcx = fb_x;
1491         box->srcy = fb_y;
1492         box->srcz = 0;
1493         box->x = clip->x1;
1494         box->y = clip->y1;
1495         box->z = 0;
1496         box->w = drm_rect_width(clip);
1497         box->h = drm_rect_height(clip);
1498         box->d = 1;
1499
1500         return sizeof(*box);
1501 }
1502
1503 static uint32_t
1504 vmw_stdu_surface_populate_update(struct vmw_du_update_plane  *update, void *cmd,
1505                                  struct drm_rect *bb)
1506 {
1507         vmw_stdu_populate_update(cmd, update->du->unit, bb->x1, bb->x2, bb->y1,
1508                                  bb->y2);
1509
1510         return sizeof(struct vmw_stdu_update);
1511 }
1512
1513 /**
1514  * vmw_stdu_plane_update_surface - Update display unit for surface backed fb
1515  * @dev_priv: Device private
1516  * @plane: Plane state
1517  * @old_state: Old plane state
1518  * @vfb: Framebuffer which is blitted to display unit
1519  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
1520  *             The returned fence pointer may be NULL in which case the device
1521  *             has already synchronized.
1522  *
1523  * Return: 0 on success or a negative error code on failure.
1524  */
1525 static int vmw_stdu_plane_update_surface(struct vmw_private *dev_priv,
1526                                          struct drm_plane *plane,
1527                                          struct drm_plane_state *old_state,
1528                                          struct vmw_framebuffer *vfb,
1529                                          struct vmw_fence_obj **out_fence)
1530 {
1531         struct vmw_du_update_plane srf_update;
1532         struct vmw_screen_target_display_unit *stdu;
1533         struct vmw_framebuffer_surface *vfbs;
1534
1535         stdu = vmw_crtc_to_stdu(plane->state->crtc);
1536         vfbs = container_of(vfb, typeof(*vfbs), base);
1537
1538         memset(&srf_update, 0, sizeof(struct vmw_du_update_plane));
1539         srf_update.plane = plane;
1540         srf_update.old_state = old_state;
1541         srf_update.dev_priv = dev_priv;
1542         srf_update.du = vmw_crtc_to_du(plane->state->crtc);
1543         srf_update.vfb = vfb;
1544         srf_update.out_fence = out_fence;
1545         srf_update.mutex = &dev_priv->cmdbuf_mutex;
1546         srf_update.cpu_blit = false;
1547         srf_update.intr = true;
1548
1549         if (vfbs->is_bo_proxy)
1550                 srf_update.post_prepare = vmw_stdu_surface_update_proxy;
1551
1552         if (vfbs->surface->res.id != stdu->display_srf->res.id) {
1553                 srf_update.calc_fifo_size = vmw_stdu_surface_fifo_size;
1554                 srf_update.pre_clip = vmw_stdu_surface_populate_copy;
1555                 srf_update.clip = vmw_stdu_surface_populate_clip;
1556         } else {
1557                 srf_update.calc_fifo_size =
1558                         vmw_stdu_surface_fifo_size_same_display;
1559         }
1560
1561         srf_update.post_clip = vmw_stdu_surface_populate_update;
1562
1563         return vmw_du_helper_plane_update(&srf_update);
1564 }
1565
1566 /**
1567  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1568  * @plane: display plane
1569  * @old_state: Only used to get crtc info
1570  *
1571  * Formally update stdu->display_srf to the new plane, and bind the new
1572  * plane STDU.  This function is called during the commit phase when
1573  * all the preparation have been done and all the configurations have
1574  * been checked.
1575  */
1576 static void
1577 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1578                                      struct drm_plane_state *old_state)
1579 {
1580         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1581         struct drm_crtc *crtc = plane->state->crtc;
1582         struct vmw_screen_target_display_unit *stdu;
1583         struct drm_pending_vblank_event *event;
1584         struct vmw_fence_obj *fence = NULL;
1585         struct vmw_private *dev_priv;
1586         int ret;
1587
1588         /* If case of device error, maintain consistent atomic state */
1589         if (crtc && plane->state->fb) {
1590                 struct vmw_framebuffer *vfb =
1591                         vmw_framebuffer_to_vfb(plane->state->fb);
1592                 stdu = vmw_crtc_to_stdu(crtc);
1593                 dev_priv = vmw_priv(crtc->dev);
1594
1595                 stdu->display_srf = vps->surf;
1596                 stdu->content_fb_type = vps->content_fb_type;
1597                 stdu->cpp = vps->cpp;
1598
1599                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1600                 if (ret)
1601                         DRM_ERROR("Failed to bind surface to STDU.\n");
1602
1603                 if (vfb->bo)
1604                         ret = vmw_stdu_plane_update_bo(dev_priv, plane,
1605                                                        old_state, vfb, &fence);
1606                 else
1607                         ret = vmw_stdu_plane_update_surface(dev_priv, plane,
1608                                                             old_state, vfb,
1609                                                             &fence);
1610                 if (ret)
1611                         DRM_ERROR("Failed to update STDU.\n");
1612         } else {
1613                 crtc = old_state->crtc;
1614                 stdu = vmw_crtc_to_stdu(crtc);
1615                 dev_priv = vmw_priv(crtc->dev);
1616
1617                 /* Blank STDU when fb and crtc are NULL */
1618                 if (!stdu->defined)
1619                         return;
1620
1621                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1622                 if (ret)
1623                         DRM_ERROR("Failed to blank STDU\n");
1624
1625                 ret = vmw_stdu_update_st(dev_priv, stdu);
1626                 if (ret)
1627                         DRM_ERROR("Failed to update STDU.\n");
1628
1629                 return;
1630         }
1631
1632         /* In case of error, vblank event is send in vmw_du_crtc_atomic_flush */
1633         event = crtc->state->event;
1634         if (event && fence) {
1635                 struct drm_file *file_priv = event->base.file_priv;
1636
1637                 ret = vmw_event_fence_action_queue(file_priv,
1638                                                    fence,
1639                                                    &event->base,
1640                                                    &event->event.vbl.tv_sec,
1641                                                    &event->event.vbl.tv_usec,
1642                                                    true);
1643                 if (ret)
1644                         DRM_ERROR("Failed to queue event on fence.\n");
1645                 else
1646                         crtc->state->event = NULL;
1647         }
1648
1649         if (fence)
1650                 vmw_fence_obj_unreference(&fence);
1651 }
1652
1653
1654 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1655         .update_plane = drm_atomic_helper_update_plane,
1656         .disable_plane = drm_atomic_helper_disable_plane,
1657         .destroy = vmw_du_primary_plane_destroy,
1658         .reset = vmw_du_plane_reset,
1659         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1660         .atomic_destroy_state = vmw_du_plane_destroy_state,
1661 };
1662
1663 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1664         .update_plane = drm_atomic_helper_update_plane,
1665         .disable_plane = drm_atomic_helper_disable_plane,
1666         .destroy = vmw_du_cursor_plane_destroy,
1667         .reset = vmw_du_plane_reset,
1668         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1669         .atomic_destroy_state = vmw_du_plane_destroy_state,
1670 };
1671
1672
1673 /*
1674  * Atomic Helpers
1675  */
1676 static const struct
1677 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1678         .atomic_check = vmw_du_cursor_plane_atomic_check,
1679         .atomic_update = vmw_du_cursor_plane_atomic_update,
1680         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1681         .cleanup_fb = vmw_du_plane_cleanup_fb,
1682 };
1683
1684 static const struct
1685 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1686         .atomic_check = vmw_du_primary_plane_atomic_check,
1687         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1688         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1689         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1690 };
1691
1692 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1693         .prepare = vmw_stdu_crtc_helper_prepare,
1694         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1695         .atomic_check = vmw_du_crtc_atomic_check,
1696         .atomic_begin = vmw_du_crtc_atomic_begin,
1697         .atomic_flush = vmw_du_crtc_atomic_flush,
1698         .atomic_enable = vmw_stdu_crtc_atomic_enable,
1699         .atomic_disable = vmw_stdu_crtc_atomic_disable,
1700 };
1701
1702
1703 /**
1704  * vmw_stdu_init - Sets up a Screen Target Display Unit
1705  *
1706  * @dev_priv: VMW DRM device
1707  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1708  *
1709  * This function is called once per CRTC, and allocates one Screen Target
1710  * display unit to represent that CRTC.  Since the SVGA device does not separate
1711  * out encoder and connector, they are represented as part of the STDU as well.
1712  */
1713 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1714 {
1715         struct vmw_screen_target_display_unit *stdu;
1716         struct drm_device *dev = dev_priv->dev;
1717         struct drm_connector *connector;
1718         struct drm_encoder *encoder;
1719         struct drm_plane *primary, *cursor;
1720         struct drm_crtc *crtc;
1721         int    ret;
1722
1723
1724         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1725         if (!stdu)
1726                 return -ENOMEM;
1727
1728         stdu->base.unit = unit;
1729         crtc = &stdu->base.crtc;
1730         encoder = &stdu->base.encoder;
1731         connector = &stdu->base.connector;
1732         primary = &stdu->base.primary;
1733         cursor = &stdu->base.cursor;
1734
1735         stdu->base.pref_active = (unit == 0);
1736         stdu->base.pref_width  = dev_priv->initial_width;
1737         stdu->base.pref_height = dev_priv->initial_height;
1738         stdu->base.is_implicit = false;
1739
1740         /* Initialize primary plane */
1741         ret = drm_universal_plane_init(dev, primary,
1742                                        0, &vmw_stdu_plane_funcs,
1743                                        vmw_primary_plane_formats,
1744                                        ARRAY_SIZE(vmw_primary_plane_formats),
1745                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
1746         if (ret) {
1747                 DRM_ERROR("Failed to initialize primary plane");
1748                 goto err_free;
1749         }
1750
1751         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1752         drm_plane_enable_fb_damage_clips(primary);
1753
1754         /* Initialize cursor plane */
1755         ret = drm_universal_plane_init(dev, cursor,
1756                         0, &vmw_stdu_cursor_funcs,
1757                         vmw_cursor_plane_formats,
1758                         ARRAY_SIZE(vmw_cursor_plane_formats),
1759                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
1760         if (ret) {
1761                 DRM_ERROR("Failed to initialize cursor plane");
1762                 drm_plane_cleanup(&stdu->base.primary);
1763                 goto err_free;
1764         }
1765
1766         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1767
1768         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1769                                  DRM_MODE_CONNECTOR_VIRTUAL);
1770         if (ret) {
1771                 DRM_ERROR("Failed to initialize connector\n");
1772                 goto err_free;
1773         }
1774
1775         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1776         connector->status = vmw_du_connector_detect(connector, false);
1777
1778         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1779                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1780         if (ret) {
1781                 DRM_ERROR("Failed to initialize encoder\n");
1782                 goto err_free_connector;
1783         }
1784
1785         (void) drm_connector_attach_encoder(connector, encoder);
1786         encoder->possible_crtcs = (1 << unit);
1787         encoder->possible_clones = 0;
1788
1789         ret = drm_connector_register(connector);
1790         if (ret) {
1791                 DRM_ERROR("Failed to register connector\n");
1792                 goto err_free_encoder;
1793         }
1794
1795         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1796                                         &stdu->base.cursor,
1797                                         &vmw_stdu_crtc_funcs, NULL);
1798         if (ret) {
1799                 DRM_ERROR("Failed to initialize CRTC\n");
1800                 goto err_free_unregister;
1801         }
1802
1803         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1804
1805         drm_mode_crtc_set_gamma_size(crtc, 256);
1806
1807         drm_object_attach_property(&connector->base,
1808                                    dev_priv->hotplug_mode_update_property, 1);
1809         drm_object_attach_property(&connector->base,
1810                                    dev->mode_config.suggested_x_property, 0);
1811         drm_object_attach_property(&connector->base,
1812                                    dev->mode_config.suggested_y_property, 0);
1813         return 0;
1814
1815 err_free_unregister:
1816         drm_connector_unregister(connector);
1817 err_free_encoder:
1818         drm_encoder_cleanup(encoder);
1819 err_free_connector:
1820         drm_connector_cleanup(connector);
1821 err_free:
1822         kfree(stdu);
1823         return ret;
1824 }
1825
1826
1827
1828 /**
1829  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1830  *
1831  *  @stdu:  Screen Target Display Unit to be destroyed
1832  *
1833  *  Clean up after vmw_stdu_init
1834  */
1835 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1836 {
1837         vmw_du_cleanup(&stdu->base);
1838         kfree(stdu);
1839 }
1840
1841
1842
1843 /******************************************************************************
1844  * Screen Target Display KMS Functions
1845  *
1846  * These functions are called by the common KMS code in vmwgfx_kms.c
1847  *****************************************************************************/
1848
1849 /**
1850  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1851  *
1852  * @dev_priv: VMW DRM device
1853  *
1854  * This function initialize a Screen Target based display device.  It checks
1855  * the capability bits to make sure the underlying hardware can support
1856  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1857  * Units, as supported by the display hardware.
1858  *
1859  * RETURNS:
1860  * 0 on success, error code otherwise
1861  */
1862 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1863 {
1864         struct drm_device *dev = dev_priv->dev;
1865         int i, ret;
1866
1867
1868         /* Do nothing if Screen Target support is turned off */
1869         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE || !dev_priv->has_mob)
1870                 return -ENOSYS;
1871
1872         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1873                 return -ENOSYS;
1874
1875         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1876         if (unlikely(ret != 0))
1877                 return ret;
1878
1879         dev_priv->active_display_unit = vmw_du_screen_target;
1880
1881         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1882                 ret = vmw_stdu_init(dev_priv, i);
1883
1884                 if (unlikely(ret != 0)) {
1885                         DRM_ERROR("Failed to initialize STDU %d", i);
1886                         return ret;
1887                 }
1888         }
1889
1890         drm_mode_config_reset(dev);
1891
1892         DRM_INFO("Screen Target Display device initialized\n");
1893
1894         return 0;
1895 }