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 "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_BO
  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: buffer object 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_buffer_object *buf;
  72                 u32 sid;
  73         };
  74 };
  75
  76 /*
  77  * SVGA commands that are used by this code. Please see the device headers
  78  * for explanation.
  79  */
  80 struct vmw_stdu_update {
  81         SVGA3dCmdHeader header;
  82         SVGA3dCmdUpdateGBScreenTarget body;
  83 };
  84
  85 struct vmw_stdu_dma {
  86         SVGA3dCmdHeader     header;
  87         SVGA3dCmdSurfaceDMA body;
  88 };
  89
  90 struct vmw_stdu_surface_copy {
  91         SVGA3dCmdHeader      header;
  92         SVGA3dCmdSurfaceCopy body;
  93 };
  94
  95
  96 /**
  97  * struct vmw_screen_target_display_unit
  98  *
  99  * @base: VMW specific DU structure
 100  * @display_srf: surface to be displayed.  The dimension of this will always
 101  *               match the display mode.  If the display mode matches
 102  *               content_vfbs dimensions, then this is a pointer into the
 103  *               corresponding field in content_vfbs.  If not, then this
 104  *               is a separate buffer to which content_vfbs will blit to.
 105  * @content_type:  content_fb type
 106  * @defined:  true if the current display unit has been initialized
 107  */
 108 struct vmw_screen_target_display_unit {
 109         struct vmw_display_unit base;
 110         const struct vmw_surface *display_srf;
 111         enum stdu_content_type content_fb_type;
 112         s32 display_width, display_height;
 113
 114         bool defined;
 115
 116         /* For CPU Blit */
 117         unsigned int cpp;
 118 };
 119
 120
 121
 122 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
 123
 124
 125
 126 /******************************************************************************
 127  * Screen Target Display Unit CRTC Functions
 128  *****************************************************************************/
 129
 130
 131 /**
 132  * vmw_stdu_crtc_destroy - cleans up the STDU
 133  *
 134  * @crtc: used to get a reference to the containing STDU
 135  */
 136 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
 137 {
 138         vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
 139 }
 140
 141 /**
 142  * vmw_stdu_define_st - Defines a Screen Target
 143  *
 144  * @dev_priv:  VMW DRM device
 145  * @stdu: display unit to create a Screen Target for
 146  * @mode: The mode to set.
 147  * @crtc_x: X coordinate of screen target relative to framebuffer origin.
 148  * @crtc_y: Y coordinate of screen target relative to framebuffer origin.
 149  *
 150  * Creates a STDU that we can used later.  This function is called whenever the
 151  * framebuffer size changes.
 152  *
 153  * RETURNs:
 154  * 0 on success, error code on failure
 155  */
 156 static int vmw_stdu_define_st(struct vmw_private *dev_priv,
 157                               struct vmw_screen_target_display_unit *stdu,
 158                               struct drm_display_mode *mode,
 159                               int crtc_x, int crtc_y)
 160 {
 161         struct {
 162                 SVGA3dCmdHeader header;
 163                 SVGA3dCmdDefineGBScreenTarget body;
 164         } *cmd;
 165
 166         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 167
 168         if (unlikely(cmd == NULL)) {
 169                 DRM_ERROR("Out of FIFO space defining Screen Target\n");
 170                 return -ENOMEM;
 171         }
 172
 173         cmd->header.id   = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
 174         cmd->header.size = sizeof(cmd->body);
 175
 176         cmd->body.stid   = stdu->base.unit;
 177         cmd->body.width  = mode->hdisplay;
 178         cmd->body.height = mode->vdisplay;
 179         cmd->body.flags  = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
 180         cmd->body.dpi    = 0;
 181         cmd->body.xRoot  = crtc_x;
 182         cmd->body.yRoot  = crtc_y;
 183
 184         stdu->base.set_gui_x = cmd->body.xRoot;
 185         stdu->base.set_gui_y = cmd->body.yRoot;
 186
 187         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 188
 189         stdu->defined = true;
 190         stdu->display_width  = mode->hdisplay;
 191         stdu->display_height = mode->vdisplay;
 192
 193         return 0;
 194 }
 195
 196
 197
 198 /**
 199  * vmw_stdu_bind_st - Binds a surface to a Screen Target
 200  *
 201  * @dev_priv: VMW DRM device
 202  * @stdu: display unit affected
 203  * @res: Buffer to bind to the screen target.  Set to NULL to blank screen.
 204  *
 205  * Binding a surface to a Screen Target the same as flipping
 206  */
 207 static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
 208                             struct vmw_screen_target_display_unit *stdu,
 209                             const struct vmw_resource *res)
 210 {
 211         SVGA3dSurfaceImageId image;
 212
 213         struct {
 214                 SVGA3dCmdHeader header;
 215                 SVGA3dCmdBindGBScreenTarget body;
 216         } *cmd;
 217
 218
 219         if (!stdu->defined) {
 220                 DRM_ERROR("No screen target defined\n");
 221                 return -EINVAL;
 222         }
 223
 224         /* Set up image using information in vfb */
 225         memset(&image, 0, sizeof(image));
 226         image.sid = res ? res->id : SVGA3D_INVALID_ID;
 227
 228         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 229
 230         if (unlikely(cmd == NULL)) {
 231                 DRM_ERROR("Out of FIFO space binding a screen target\n");
 232                 return -ENOMEM;
 233         }
 234
 235         cmd->header.id   = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
 236         cmd->header.size = sizeof(cmd->body);
 237
 238         cmd->body.stid   = stdu->base.unit;
 239         cmd->body.image  = image;
 240
 241         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 242
 243         return 0;
 244 }
 245
 246 /**
 247  * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
 248  * bounding box.
 249  *
 250  * @cmd: Pointer to command stream.
 251  * @unit: Screen target unit.
 252  * @left: Left side of bounding box.
 253  * @right: Right side of bounding box.
 254  * @top: Top side of bounding box.
 255  * @bottom: Bottom side of bounding box.
 256  */
 257 static void vmw_stdu_populate_update(void *cmd, int unit,
 258                                      s32 left, s32 right, s32 top, s32 bottom)
 259 {
 260         struct vmw_stdu_update *update = cmd;
 261
 262         update->header.id   = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
 263         update->header.size = sizeof(update->body);
 264
 265         update->body.stid   = unit;
 266         update->body.rect.x = left;
 267         update->body.rect.y = top;
 268         update->body.rect.w = right - left;
 269         update->body.rect.h = bottom - top;
 270 }
 271
 272 /**
 273  * vmw_stdu_update_st - Full update of a Screen Target
 274  *
 275  * @dev_priv: VMW DRM device
 276  * @stdu: display unit affected
 277  *
 278  * This function needs to be called whenever the content of a screen
 279  * target has changed completely. Typically as a result of a backing
 280  * surface change.
 281  *
 282  * RETURNS:
 283  * 0 on success, error code on failure
 284  */
 285 static int vmw_stdu_update_st(struct vmw_private *dev_priv,
 286                               struct vmw_screen_target_display_unit *stdu)
 287 {
 288         struct vmw_stdu_update *cmd;
 289
 290         if (!stdu->defined) {
 291                 DRM_ERROR("No screen target defined");
 292                 return -EINVAL;
 293         }
 294
 295         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 296
 297         if (unlikely(cmd == NULL)) {
 298                 DRM_ERROR("Out of FIFO space updating a Screen Target\n");
 299                 return -ENOMEM;
 300         }
 301
 302         vmw_stdu_populate_update(cmd, stdu->base.unit,
 303                                  0, stdu->display_width,
 304                                  0, stdu->display_height);
 305
 306         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 307
 308         return 0;
 309 }
 310
 311
 312
 313 /**
 314  * vmw_stdu_destroy_st - Destroy a Screen Target
 315  *
 316  * @dev_priv:  VMW DRM device
 317  * @stdu: display unit to destroy
 318  */
 319 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
 320                                struct vmw_screen_target_display_unit *stdu)
 321 {
 322         int    ret;
 323
 324         struct {
 325                 SVGA3dCmdHeader header;
 326                 SVGA3dCmdDestroyGBScreenTarget body;
 327         } *cmd;
 328
 329
 330         /* Nothing to do if not successfully defined */
 331         if (unlikely(!stdu->defined))
 332                 return 0;
 333
 334         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 335
 336         if (unlikely(cmd == NULL)) {
 337                 DRM_ERROR("Out of FIFO space, screen target not destroyed\n");
 338                 return -ENOMEM;
 339         }
 340
 341         cmd->header.id   = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
 342         cmd->header.size = sizeof(cmd->body);
 343
 344         cmd->body.stid   = stdu->base.unit;
 345
 346         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 347
 348         /* Force sync */
 349         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 350         if (unlikely(ret != 0))
 351                 DRM_ERROR("Failed to sync with HW");
 352
 353         stdu->defined = false;
 354         stdu->display_width  = 0;
 355         stdu->display_height = 0;
 356
 357         return ret;
 358 }
 359
 360
 361 /**
 362  * vmw_stdu_crtc_mode_set_nofb - Updates screen target size
 363  *
 364  * @crtc: CRTC associated with the screen target
 365  *
 366  * This function defines/destroys a screen target
 367  *
 368  */
 369 static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 370 {
 371         struct vmw_private *dev_priv;
 372         struct vmw_screen_target_display_unit *stdu;
 373         struct drm_connector_state *conn_state;
 374         struct vmw_connector_state *vmw_conn_state;
 375         int x, y, ret;
 376
 377         stdu = vmw_crtc_to_stdu(crtc);
 378         dev_priv = vmw_priv(crtc->dev);
 379         conn_state = stdu->base.connector.state;
 380         vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
 381
 382         if (stdu->defined) {
 383                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 384                 if (ret)
 385                         DRM_ERROR("Failed to blank CRTC\n");
 386
 387                 (void) vmw_stdu_update_st(dev_priv, stdu);
 388
 389                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 390                 if (ret)
 391                         DRM_ERROR("Failed to destroy Screen Target\n");
 392
 393                 stdu->content_fb_type = SAME_AS_DISPLAY;
 394         }
 395
 396         if (!crtc->state->enable)
 397                 return;
 398
 399         if (stdu->base.is_implicit) {
 400                 x = crtc->x;
 401                 y = crtc->y;
 402         } else {
 403                 x = vmw_conn_state->gui_x;
 404                 y = vmw_conn_state->gui_y;
 405         }
 406
 407         vmw_svga_enable(dev_priv);
 408         ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, x, y);
 409
 410         if (ret)
 411                 DRM_ERROR("Failed to define Screen Target of size %dx%d\n",
 412                           crtc->x, crtc->y);
 413 }
 414
 415
 416 static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
 417 {
 418 }
 419
 420
 421 static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
 422                                         struct drm_crtc_state *old_state)
 423 {
 424         struct drm_plane_state *plane_state = crtc->primary->state;
 425         struct vmw_private *dev_priv;
 426         struct vmw_screen_target_display_unit *stdu;
 427         struct vmw_framebuffer *vfb;
 428         struct drm_framebuffer *fb;
 429
 430
 431         stdu     = vmw_crtc_to_stdu(crtc);
 432         dev_priv = vmw_priv(crtc->dev);
 433         fb       = plane_state->fb;
 434
 435         vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 436
 437         if (vfb)
 438                 vmw_kms_add_active(dev_priv, &stdu->base, vfb);
 439         else
 440                 vmw_kms_del_active(dev_priv, &stdu->base);
 441 }
 442
 443 static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
 444                                          struct drm_crtc_state *old_state)
 445 {
 446         struct vmw_private *dev_priv;
 447         struct vmw_screen_target_display_unit *stdu;
 448         int ret;
 449
 450
 451         if (!crtc) {
 452                 DRM_ERROR("CRTC is NULL\n");
 453                 return;
 454         }
 455
 456         stdu     = vmw_crtc_to_stdu(crtc);
 457         dev_priv = vmw_priv(crtc->dev);
 458
 459         if (stdu->defined) {
 460                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 461                 if (ret)
 462                         DRM_ERROR("Failed to blank CRTC\n");
 463
 464                 (void) vmw_stdu_update_st(dev_priv, stdu);
 465
 466                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 467                 if (ret)
 468                         DRM_ERROR("Failed to destroy Screen Target\n");
 469
 470                 stdu->content_fb_type = SAME_AS_DISPLAY;
 471         }
 472 }
 473
 474 /**
 475  * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
 476  *
 477  * @crtc: CRTC to attach FB to
 478  * @fb: FB to attach
 479  * @event: Event to be posted. This event should've been alloced
 480  *         using k[mz]alloc, and should've been completely initialized.
 481  * @page_flip_flags: Input flags.
 482  *
 483  * If the STDU uses the same display and content buffers, i.e. a true flip,
 484  * this function will replace the existing display buffer with the new content
 485  * buffer.
 486  *
 487  * If the STDU uses different display and content buffers, i.e. a blit, then
 488  * only the content buffer will be updated.
 489  *
 490  * RETURNS:
 491  * 0 on success, error code on failure
 492  */
 493 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 494                                    struct drm_framebuffer *new_fb,
 495                                    struct drm_pending_vblank_event *event,
 496                                    uint32_t flags,
 497                                    struct drm_modeset_acquire_ctx *ctx)
 498
 499 {
 500         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 501         struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
 502         int ret;
 503
 504         if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
 505                 return -EINVAL;
 506
 507         ret = drm_atomic_helper_page_flip(crtc, new_fb, event, flags, ctx);
 508         if (ret) {
 509                 DRM_ERROR("Page flip error %d.\n", ret);
 510                 return ret;
 511         }
 512
 513         return 0;
 514 }
 515
 516
 517 /**
 518  * vmw_stdu_bo_clip - Callback to encode a suface DMA command cliprect
 519  *
 520  * @dirty: The closure structure.
 521  *
 522  * Encodes a surface DMA command cliprect and updates the bounding box
 523  * for the DMA.
 524  */
 525 static void vmw_stdu_bo_clip(struct vmw_kms_dirty *dirty)
 526 {
 527         struct vmw_stdu_dirty *ddirty =
 528                 container_of(dirty, struct vmw_stdu_dirty, base);
 529         struct vmw_stdu_dma *cmd = dirty->cmd;
 530         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 531
 532         blit += dirty->num_hits;
 533         blit->srcx = dirty->fb_x;
 534         blit->srcy = dirty->fb_y;
 535         blit->x = dirty->unit_x1;
 536         blit->y = dirty->unit_y1;
 537         blit->d = 1;
 538         blit->w = dirty->unit_x2 - dirty->unit_x1;
 539         blit->h = dirty->unit_y2 - dirty->unit_y1;
 540         dirty->num_hits++;
 541
 542         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
 543                 return;
 544
 545         /* Destination bounding box */
 546         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 547         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 548         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 549         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 550 }
 551
 552 /**
 553  * vmw_stdu_bo_fifo_commit - Callback to fill in and submit a DMA command.
 554  *
 555  * @dirty: The closure structure.
 556  *
 557  * Fills in the missing fields in a DMA command, and optionally encodes
 558  * a screen target update command, depending on transfer direction.
 559  */
 560 static void vmw_stdu_bo_fifo_commit(struct vmw_kms_dirty *dirty)
 561 {
 562         struct vmw_stdu_dirty *ddirty =
 563                 container_of(dirty, struct vmw_stdu_dirty, base);
 564         struct vmw_screen_target_display_unit *stdu =
 565                 container_of(dirty->unit, typeof(*stdu), base);
 566         struct vmw_stdu_dma *cmd = dirty->cmd;
 567         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 568         SVGA3dCmdSurfaceDMASuffix *suffix =
 569                 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
 570         size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
 571
 572         if (!dirty->num_hits) {
 573                 vmw_fifo_commit(dirty->dev_priv, 0);
 574                 return;
 575         }
 576
 577         cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
 578         cmd->header.size = sizeof(cmd->body) + blit_size;
 579         vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
 580         cmd->body.guest.pitch = ddirty->pitch;
 581         cmd->body.host.sid = stdu->display_srf->res.id;
 582         cmd->body.host.face = 0;
 583         cmd->body.host.mipmap = 0;
 584         cmd->body.transfer = ddirty->transfer;
 585         suffix->suffixSize = sizeof(*suffix);
 586         suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
 587
 588         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 589                 blit_size += sizeof(struct vmw_stdu_update);
 590
 591                 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
 592                                          ddirty->left, ddirty->right,
 593                                          ddirty->top, ddirty->bottom);
 594         }
 595
 596         vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
 597
 598         ddirty->left = ddirty->top = S32_MAX;
 599         ddirty->right = ddirty->bottom = S32_MIN;
 600 }
 601
 602
 603 /**
 604  * vmw_stdu_bo_cpu_clip - Callback to encode a CPU blit
 605  *
 606  * @dirty: The closure structure.
 607  *
 608  * This function calculates the bounding box for all the incoming clips.
 609  */
 610 static void vmw_stdu_bo_cpu_clip(struct vmw_kms_dirty *dirty)
 611 {
 612         struct vmw_stdu_dirty *ddirty =
 613                 container_of(dirty, struct vmw_stdu_dirty, base);
 614
 615         dirty->num_hits = 1;
 616
 617         /* Calculate destination bounding box */
 618         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 619         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 620         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 621         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 622
 623         /*
 624          * Calculate content bounding box.  We only need the top-left
 625          * coordinate because width and height will be the same as the
 626          * destination bounding box above
 627          */
 628         ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
 629         ddirty->fb_top  = min_t(s32, ddirty->fb_top, dirty->fb_y);
 630 }
 631
 632
 633 /**
 634  * vmw_stdu_bo_cpu_commit - Callback to do a CPU blit from buffer object
 635  *
 636  * @dirty: The closure structure.
 637  *
 638  * For the special case when we cannot create a proxy surface in a
 639  * 2D VM, we have to do a CPU blit ourselves.
 640  */
 641 static void vmw_stdu_bo_cpu_commit(struct vmw_kms_dirty *dirty)
 642 {
 643         struct vmw_stdu_dirty *ddirty =
 644                 container_of(dirty, struct vmw_stdu_dirty, base);
 645         struct vmw_screen_target_display_unit *stdu =
 646                 container_of(dirty->unit, typeof(*stdu), base);
 647         s32 width, height;
 648         s32 src_pitch, dst_pitch;
 649         struct ttm_buffer_object *src_bo, *dst_bo;
 650         u32 src_offset, dst_offset;
 651         struct vmw_diff_cpy diff = VMW_CPU_BLIT_DIFF_INITIALIZER(stdu->cpp);
 652
 653         if (!dirty->num_hits)
 654                 return;
 655
 656         width = ddirty->right - ddirty->left;
 657         height = ddirty->bottom - ddirty->top;
 658
 659         if (width == 0 || height == 0)
 660                 return;
 661
 662         /* Assume we are blitting from Guest (bo) to Host (display_srf) */
 663         dst_pitch = stdu->display_srf->base_size.width * stdu->cpp;
 664         dst_bo = &stdu->display_srf->res.backup->base;
 665         dst_offset = ddirty->top * dst_pitch + ddirty->left * stdu->cpp;
 666
 667         src_pitch = ddirty->pitch;
 668         src_bo = &ddirty->buf->base;
 669         src_offset = ddirty->fb_top * src_pitch + ddirty->fb_left * stdu->cpp;
 670
 671         /* Swap src and dst if the assumption was wrong. */
 672         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM) {
 673                 swap(dst_pitch, src_pitch);
 674                 swap(dst_bo, src_bo);
 675                 swap(src_offset, dst_offset);
 676         }
 677
 678         (void) vmw_bo_cpu_blit(dst_bo, dst_offset, dst_pitch,
 679                                src_bo, src_offset, src_pitch,
 680                                width * stdu->cpp, height, &diff);
 681
 682         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM &&
 683             drm_rect_visible(&diff.rect)) {
 684                 struct vmw_private *dev_priv;
 685                 struct vmw_stdu_update *cmd;
 686                 struct drm_clip_rect region;
 687                 int ret;
 688
 689                 /* We are updating the actual surface, not a proxy */
 690                 region.x1 = diff.rect.x1;
 691                 region.x2 = diff.rect.x2;
 692                 region.y1 = diff.rect.y1;
 693                 region.y2 = diff.rect.y2;
 694                 ret = vmw_kms_update_proxy(
 695                         (struct vmw_resource *) &stdu->display_srf->res,
 696                         (const struct drm_clip_rect *) &region, 1, 1);
 697                 if (ret)
 698                         goto out_cleanup;
 699
 700
 701                 dev_priv = vmw_priv(stdu->base.crtc.dev);
 702                 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 703
 704                 if (!cmd) {
 705                         DRM_ERROR("Cannot reserve FIFO space to update STDU");
 706                         goto out_cleanup;
 707                 }
 708
 709                 vmw_stdu_populate_update(cmd, stdu->base.unit,
 710                                          region.x1, region.x2,
 711                                          region.y1, region.y2);
 712
 713                 vmw_fifo_commit(dev_priv, sizeof(*cmd));
 714         }
 715
 716 out_cleanup:
 717         ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
 718         ddirty->right = ddirty->bottom = S32_MIN;
 719 }
 720
 721 /**
 722  * vmw_kms_stdu_dma - Perform a DMA transfer between a buffer-object backed
 723  * framebuffer and the screen target system.
 724  *
 725  * @dev_priv: Pointer to the device private structure.
 726  * @file_priv: Pointer to a struct drm-file identifying the caller. May be
 727  * set to NULL, but then @user_fence_rep must also be set to NULL.
 728  * @vfb: Pointer to the buffer-object backed framebuffer.
 729  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 730  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 731  * be NULL.
 732  * @num_clips: Number of clip rects in @clips or @vclips.
 733  * @increment: Increment to use when looping over @clips or @vclips.
 734  * @to_surface: Whether to DMA to the screen target system as opposed to
 735  * from the screen target system.
 736  * @interruptible: Whether to perform waits interruptible if possible.
 737  * @crtc: If crtc is passed, perform stdu dma on that crtc only.
 738  *
 739  * If DMA-ing till the screen target system, the function will also notify
 740  * the screen target system that a bounding box of the cliprects has been
 741  * updated.
 742  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 743  * interrupted.
 744  */
 745 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 746                      struct drm_file *file_priv,
 747                      struct vmw_framebuffer *vfb,
 748                      struct drm_vmw_fence_rep __user *user_fence_rep,
 749                      struct drm_clip_rect *clips,
 750                      struct drm_vmw_rect *vclips,
 751                      uint32_t num_clips,
 752                      int increment,
 753                      bool to_surface,
 754                      bool interruptible,
 755                      struct drm_crtc *crtc)
 756 {
 757         struct vmw_buffer_object *buf =
 758                 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
 759         struct vmw_stdu_dirty ddirty;
 760         int ret;
 761         bool cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
 762
 763         /*
 764          * VMs without 3D support don't have the surface DMA command and
 765          * we'll be using a CPU blit, and the framebuffer should be moved out
 766          * of VRAM.
 767          */
 768         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
 769                                             false, cpu_blit);
 770         if (ret)
 771                 return ret;
 772
 773         ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 774                 SVGA3D_READ_HOST_VRAM;
 775         ddirty.left = ddirty.top = S32_MAX;
 776         ddirty.right = ddirty.bottom = S32_MIN;
 777         ddirty.fb_left = ddirty.fb_top = S32_MAX;
 778         ddirty.pitch = vfb->base.pitches[0];
 779         ddirty.buf = buf;
 780         ddirty.base.fifo_commit = vmw_stdu_bo_fifo_commit;
 781         ddirty.base.clip = vmw_stdu_bo_clip;
 782         ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
 783                 num_clips * sizeof(SVGA3dCopyBox) +
 784                 sizeof(SVGA3dCmdSurfaceDMASuffix);
 785         if (to_surface)
 786                 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
 787
 788
 789         if (cpu_blit) {
 790                 ddirty.base.fifo_commit = vmw_stdu_bo_cpu_commit;
 791                 ddirty.base.clip = vmw_stdu_bo_cpu_clip;
 792                 ddirty.base.fifo_reserve_size = 0;
 793         }
 794
 795         ddirty.base.crtc = crtc;
 796
 797         ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 798                                    0, 0, num_clips, increment, &ddirty.base);
 799         vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
 800                                      user_fence_rep);
 801
 802         return ret;
 803 }
 804
 805 /**
 806  * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
 807  *
 808  * @dirty: The closure structure.
 809  *
 810  * Encodes a surface copy command cliprect and updates the bounding box
 811  * for the copy.
 812  */
 813 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
 814 {
 815         struct vmw_stdu_dirty *sdirty =
 816                 container_of(dirty, struct vmw_stdu_dirty, base);
 817         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 818         struct vmw_screen_target_display_unit *stdu =
 819                 container_of(dirty->unit, typeof(*stdu), base);
 820
 821         if (sdirty->sid != stdu->display_srf->res.id) {
 822                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 823
 824                 blit += dirty->num_hits;
 825                 blit->srcx = dirty->fb_x;
 826                 blit->srcy = dirty->fb_y;
 827                 blit->x = dirty->unit_x1;
 828                 blit->y = dirty->unit_y1;
 829                 blit->d = 1;
 830                 blit->w = dirty->unit_x2 - dirty->unit_x1;
 831                 blit->h = dirty->unit_y2 - dirty->unit_y1;
 832         }
 833
 834         dirty->num_hits++;
 835
 836         /* Destination bounding box */
 837         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 838         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 839         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 840         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 841 }
 842
 843 /**
 844  * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
 845  * copy command.
 846  *
 847  * @dirty: The closure structure.
 848  *
 849  * Fills in the missing fields in a surface copy command, and encodes a screen
 850  * target update command.
 851  */
 852 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 853 {
 854         struct vmw_stdu_dirty *sdirty =
 855                 container_of(dirty, struct vmw_stdu_dirty, base);
 856         struct vmw_screen_target_display_unit *stdu =
 857                 container_of(dirty->unit, typeof(*stdu), base);
 858         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 859         struct vmw_stdu_update *update;
 860         size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
 861         size_t commit_size;
 862
 863         if (!dirty->num_hits) {
 864                 vmw_fifo_commit(dirty->dev_priv, 0);
 865                 return;
 866         }
 867
 868         if (sdirty->sid != stdu->display_srf->res.id) {
 869                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 870
 871                 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
 872                 cmd->header.size = sizeof(cmd->body) + blit_size;
 873                 cmd->body.src.sid = sdirty->sid;
 874                 cmd->body.dest.sid = stdu->display_srf->res.id;
 875                 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
 876                 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
 877         } else {
 878                 update = dirty->cmd;
 879                 commit_size = sizeof(*update);
 880         }
 881
 882         vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
 883                                  sdirty->right, sdirty->top, sdirty->bottom);
 884
 885         vmw_fifo_commit(dirty->dev_priv, commit_size);
 886
 887         sdirty->left = sdirty->top = S32_MAX;
 888         sdirty->right = sdirty->bottom = S32_MIN;
 889 }
 890
 891 /**
 892  * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
 893  *
 894  * @dev_priv: Pointer to the device private structure.
 895  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 896  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 897  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 898  * be NULL.
 899  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 900  * to @framebuffer will be used.
 901  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 902  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 903  * @num_clips: Number of clip rects in @clips.
 904  * @inc: Increment to use when looping over @clips.
 905  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 906  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 907  * case the device has already synchronized.
 908  * @crtc: If crtc is passed, perform surface dirty on that crtc only.
 909  *
 910  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 911  * interrupted.
 912  */
 913 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
 914                                struct vmw_framebuffer *framebuffer,
 915                                struct drm_clip_rect *clips,
 916                                struct drm_vmw_rect *vclips,
 917                                struct vmw_resource *srf,
 918                                s32 dest_x,
 919                                s32 dest_y,
 920                                unsigned num_clips, int inc,
 921                                struct vmw_fence_obj **out_fence,
 922                                struct drm_crtc *crtc)
 923 {
 924         struct vmw_framebuffer_surface *vfbs =
 925                 container_of(framebuffer, typeof(*vfbs), base);
 926         struct vmw_stdu_dirty sdirty;
 927         struct vmw_validation_ctx ctx;
 928         int ret;
 929
 930         if (!srf)
 931                 srf = &vfbs->surface->res;
 932
 933         ret = vmw_kms_helper_resource_prepare(srf, true, &ctx);
 934         if (ret)
 935                 return ret;
 936
 937         if (vfbs->is_bo_proxy) {
 938                 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
 939                 if (ret)
 940                         goto out_finish;
 941         }
 942
 943         sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
 944         sdirty.base.clip = vmw_kms_stdu_surface_clip;
 945         sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
 946                 sizeof(SVGA3dCopyBox) * num_clips +
 947                 sizeof(struct vmw_stdu_update);
 948         sdirty.base.crtc = crtc;
 949         sdirty.sid = srf->id;
 950         sdirty.left = sdirty.top = S32_MAX;
 951         sdirty.right = sdirty.bottom = S32_MIN;
 952
 953         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 954                                    dest_x, dest_y, num_clips, inc,
 955                                    &sdirty.base);
 956 out_finish:
 957         vmw_kms_helper_resource_finish(&ctx, out_fence);
 958
 959         return ret;
 960 }
 961
 962
 963 /*
 964  *  Screen Target CRTC dispatch table
 965  */
 966 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
 967         .gamma_set = vmw_du_crtc_gamma_set,
 968         .destroy = vmw_stdu_crtc_destroy,
 969         .reset = vmw_du_crtc_reset,
 970         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
 971         .atomic_destroy_state = vmw_du_crtc_destroy_state,
 972         .set_config = vmw_kms_set_config,
 973         .page_flip = vmw_stdu_crtc_page_flip,
 974 };
 975
 976
 977
 978 /******************************************************************************
 979  * Screen Target Display Unit Encoder Functions
 980  *****************************************************************************/
 981
 982 /**
 983  * vmw_stdu_encoder_destroy - cleans up the STDU
 984  *
 985  * @encoder: used the get the containing STDU
 986  *
 987  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
 988  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
 989  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
 990  * get called.
 991  */
 992 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
 993 {
 994         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
 995 }
 996
 997 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
 998         .destroy = vmw_stdu_encoder_destroy,
 999 };
1000
1001
1002
1003 /******************************************************************************
1004  * Screen Target Display Unit Connector Functions
1005  *****************************************************************************/
1006
1007 /**
1008  * vmw_stdu_connector_destroy - cleans up the STDU
1009  *
1010  * @connector: used to get the containing STDU
1011  *
1012  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1013  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1014  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1015  * get called.
1016  */
1017 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
1018 {
1019         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
1020 }
1021
1022
1023
1024 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
1025         .dpms = vmw_du_connector_dpms,
1026         .detect = vmw_du_connector_detect,
1027         .fill_modes = vmw_du_connector_fill_modes,
1028         .set_property = vmw_du_connector_set_property,
1029         .destroy = vmw_stdu_connector_destroy,
1030         .reset = vmw_du_connector_reset,
1031         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
1032         .atomic_destroy_state = vmw_du_connector_destroy_state,
1033         .atomic_set_property = vmw_du_connector_atomic_set_property,
1034         .atomic_get_property = vmw_du_connector_atomic_get_property,
1035 };
1036
1037
1038 static const struct
1039 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
1040         .best_encoder = drm_atomic_helper_best_encoder,
1041 };
1042
1043
1044
1045 /******************************************************************************
1046  * Screen Target Display Plane Functions
1047  *****************************************************************************/
1048
1049
1050
1051 /**
1052  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
1053  *
1054  * @plane:  display plane
1055  * @old_state: Contains the FB to clean up
1056  *
1057  * Unpins the display surface
1058  *
1059  * Returns 0 on success
1060  */
1061 static void
1062 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1063                                   struct drm_plane_state *old_state)
1064 {
1065         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1066
1067         if (vps->surf)
1068                 WARN_ON(!vps->pinned);
1069
1070         vmw_du_plane_cleanup_fb(plane, old_state);
1071
1072         vps->content_fb_type = SAME_AS_DISPLAY;
1073         vps->cpp = 0;
1074 }
1075
1076
1077
1078 /**
1079  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1080  *
1081  * @plane:  display plane
1082  * @new_state: info on the new plane state, including the FB
1083  *
1084  * This function allocates a new display surface if the content is
1085  * backed by a buffer object.  The display surface is pinned here, and it'll
1086  * be unpinned in .cleanup_fb()
1087  *
1088  * Returns 0 on success
1089  */
1090 static int
1091 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1092                                   struct drm_plane_state *new_state)
1093 {
1094         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1095         struct drm_framebuffer *new_fb = new_state->fb;
1096         struct vmw_framebuffer *vfb;
1097         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1098         enum stdu_content_type new_content_type;
1099         struct vmw_framebuffer_surface *new_vfbs;
1100         struct drm_crtc *crtc = new_state->crtc;
1101         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1102         int ret;
1103
1104         /* No FB to prepare */
1105         if (!new_fb) {
1106                 if (vps->surf) {
1107                         WARN_ON(vps->pinned != 0);
1108                         vmw_surface_unreference(&vps->surf);
1109                 }
1110
1111                 return 0;
1112         }
1113
1114         vfb = vmw_framebuffer_to_vfb(new_fb);
1115         new_vfbs = (vfb->bo) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1116
1117         if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
1118             new_vfbs->surface->base_size.height == vdisplay)
1119                 new_content_type = SAME_AS_DISPLAY;
1120         else if (vfb->bo)
1121                 new_content_type = SEPARATE_BO;
1122         else
1123                 new_content_type = SEPARATE_SURFACE;
1124
1125         if (new_content_type != SAME_AS_DISPLAY) {
1126                 struct vmw_surface content_srf;
1127                 struct drm_vmw_size display_base_size = {0};
1128
1129                 display_base_size.width  = hdisplay;
1130                 display_base_size.height = vdisplay;
1131                 display_base_size.depth  = 1;
1132
1133                 /*
1134                  * If content buffer is a buffer object, then we have to
1135                  * construct surface info
1136                  */
1137                 if (new_content_type == SEPARATE_BO) {
1138
1139                         switch (new_fb->format->cpp[0]*8) {
1140                         case 32:
1141                                 content_srf.format = SVGA3D_X8R8G8B8;
1142                                 break;
1143
1144                         case 16:
1145                                 content_srf.format = SVGA3D_R5G6B5;
1146                                 break;
1147
1148                         case 8:
1149                                 content_srf.format = SVGA3D_P8;
1150                                 break;
1151
1152                         default:
1153                                 DRM_ERROR("Invalid format\n");
1154                                 return -EINVAL;
1155                         }
1156
1157                         content_srf.flags             = 0;
1158                         content_srf.mip_levels[0]     = 1;
1159                         content_srf.multisample_count = 0;
1160                         content_srf.multisample_pattern =
1161                                 SVGA3D_MS_PATTERN_NONE;
1162                         content_srf.quality_level = SVGA3D_MS_QUALITY_NONE;
1163                 } else {
1164                         content_srf = *new_vfbs->surface;
1165                 }
1166
1167                 if (vps->surf) {
1168                         struct drm_vmw_size cur_base_size = vps->surf->base_size;
1169
1170                         if (cur_base_size.width != display_base_size.width ||
1171                             cur_base_size.height != display_base_size.height ||
1172                             vps->surf->format != content_srf.format) {
1173                                 WARN_ON(vps->pinned != 0);
1174                                 vmw_surface_unreference(&vps->surf);
1175                         }
1176
1177                 }
1178
1179                 if (!vps->surf) {
1180                         ret = vmw_surface_gb_priv_define
1181                                 (crtc->dev,
1182                                  /* Kernel visible only */
1183                                  0,
1184                                  content_srf.flags,
1185                                  content_srf.format,
1186                                  true,  /* a scanout buffer */
1187                                  content_srf.mip_levels[0],
1188                                  content_srf.multisample_count,
1189                                  0,
1190                                  display_base_size,
1191                                  content_srf.multisample_pattern,
1192                                  content_srf.quality_level,
1193                                  &vps->surf);
1194                         if (ret != 0) {
1195                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1196                                 return ret;
1197                         }
1198                 }
1199         } else {
1200                 /*
1201                  * prepare_fb and clean_fb should only take care of pinning
1202                  * and unpinning.  References are tracked by state objects.
1203                  * The only time we add a reference in prepare_fb is if the
1204                  * state object doesn't have a reference to begin with
1205                  */
1206                 if (vps->surf) {
1207                         WARN_ON(vps->pinned != 0);
1208                         vmw_surface_unreference(&vps->surf);
1209                 }
1210
1211                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1212         }
1213
1214         if (vps->surf) {
1215
1216                 /* Pin new surface before flipping */
1217                 ret = vmw_resource_pin(&vps->surf->res, false);
1218                 if (ret)
1219                         goto out_srf_unref;
1220
1221                 vps->pinned++;
1222         }
1223
1224         vps->content_fb_type = new_content_type;
1225
1226         /*
1227          * This should only happen if the buffer object is too large to create a
1228          * proxy surface for.
1229          * If we are a 2D VM with a buffer object then we have to use CPU blit
1230          * so cache these mappings
1231          */
1232         if (vps->content_fb_type == SEPARATE_BO &&
1233             !(dev_priv->capabilities & SVGA_CAP_3D))
1234                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1235
1236         return 0;
1237
1238 out_srf_unref:
1239         vmw_surface_unreference(&vps->surf);
1240         return ret;
1241 }
1242
1243
1244
1245 /**
1246  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1247  *
1248  * @plane: display plane
1249  * @old_state: Only used to get crtc info
1250  *
1251  * Formally update stdu->display_srf to the new plane, and bind the new
1252  * plane STDU.  This function is called during the commit phase when
1253  * all the preparation have been done and all the configurations have
1254  * been checked.
1255  */
1256 static void
1257 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1258                                      struct drm_plane_state *old_state)
1259 {
1260         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1261         struct drm_crtc *crtc = plane->state->crtc;
1262         struct vmw_screen_target_display_unit *stdu;
1263         struct drm_pending_vblank_event *event;
1264         struct vmw_private *dev_priv;
1265         int ret;
1266
1267         /*
1268          * We cannot really fail this function, so if we do, then output an
1269          * error and maintain consistent atomic state.
1270          */
1271         if (crtc && plane->state->fb) {
1272                 struct vmw_framebuffer *vfb =
1273                         vmw_framebuffer_to_vfb(plane->state->fb);
1274                 struct drm_vmw_rect vclips;
1275                 stdu = vmw_crtc_to_stdu(crtc);
1276                 dev_priv = vmw_priv(crtc->dev);
1277
1278                 stdu->display_srf = vps->surf;
1279                 stdu->content_fb_type = vps->content_fb_type;
1280                 stdu->cpp = vps->cpp;
1281
1282                 vclips.x = crtc->x;
1283                 vclips.y = crtc->y;
1284                 vclips.w = crtc->mode.hdisplay;
1285                 vclips.h = crtc->mode.vdisplay;
1286
1287                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1288                 if (ret)
1289                         DRM_ERROR("Failed to bind surface to STDU.\n");
1290
1291                 if (vfb->bo)
1292                         ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL,
1293                                                &vclips, 1, 1, true, false,
1294                                                crtc);
1295                 else
1296                         ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL,
1297                                                          &vclips, NULL, 0, 0,
1298                                                          1, 1, NULL, crtc);
1299                 if (ret)
1300                         DRM_ERROR("Failed to update STDU.\n");
1301         } else {
1302                 crtc = old_state->crtc;
1303                 stdu = vmw_crtc_to_stdu(crtc);
1304                 dev_priv = vmw_priv(crtc->dev);
1305
1306                 /*
1307                  * When disabling a plane, CRTC and FB should always be NULL
1308                  * together, otherwise it's an error.
1309                  * Here primary plane is being disable so blank the screen
1310                  * target display unit, if not already done.
1311                  */
1312                 if (!stdu->defined)
1313                         return;
1314
1315                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1316                 if (ret)
1317                         DRM_ERROR("Failed to blank STDU\n");
1318
1319                 ret = vmw_stdu_update_st(dev_priv, stdu);
1320                 if (ret)
1321                         DRM_ERROR("Failed to update STDU.\n");
1322
1323                 return;
1324         }
1325
1326         event = crtc->state->event;
1327         /*
1328          * In case of failure and other cases, vblank event will be sent in
1329          * vmw_du_crtc_atomic_flush.
1330          */
1331         if (event && (ret == 0)) {
1332                 struct vmw_fence_obj *fence = NULL;
1333                 struct drm_file *file_priv = event->base.file_priv;
1334
1335                 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
1336
1337                 /*
1338                  * If fence is NULL, then already sync.
1339                  */
1340                 if (fence) {
1341                         ret = vmw_event_fence_action_queue(
1342                                 file_priv, fence, &event->base,
1343                                 &event->event.vbl.tv_sec,
1344                                 &event->event.vbl.tv_usec,
1345                                 true);
1346                         if (ret)
1347                                 DRM_ERROR("Failed to queue event on fence.\n");
1348                         else
1349                                 crtc->state->event = NULL;
1350
1351                         vmw_fence_obj_unreference(&fence);
1352                 }
1353         } else {
1354                 (void) vmw_fifo_flush(dev_priv, false);
1355         }
1356 }
1357
1358
1359 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1360         .update_plane = drm_atomic_helper_update_plane,
1361         .disable_plane = drm_atomic_helper_disable_plane,
1362         .destroy = vmw_du_primary_plane_destroy,
1363         .reset = vmw_du_plane_reset,
1364         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1365         .atomic_destroy_state = vmw_du_plane_destroy_state,
1366 };
1367
1368 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1369         .update_plane = drm_atomic_helper_update_plane,
1370         .disable_plane = drm_atomic_helper_disable_plane,
1371         .destroy = vmw_du_cursor_plane_destroy,
1372         .reset = vmw_du_plane_reset,
1373         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1374         .atomic_destroy_state = vmw_du_plane_destroy_state,
1375 };
1376
1377
1378 /*
1379  * Atomic Helpers
1380  */
1381 static const struct
1382 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1383         .atomic_check = vmw_du_cursor_plane_atomic_check,
1384         .atomic_update = vmw_du_cursor_plane_atomic_update,
1385         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1386         .cleanup_fb = vmw_du_plane_cleanup_fb,
1387 };
1388
1389 static const struct
1390 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1391         .atomic_check = vmw_du_primary_plane_atomic_check,
1392         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1393         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1394         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1395 };
1396
1397 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1398         .prepare = vmw_stdu_crtc_helper_prepare,
1399         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1400         .atomic_check = vmw_du_crtc_atomic_check,
1401         .atomic_begin = vmw_du_crtc_atomic_begin,
1402         .atomic_flush = vmw_du_crtc_atomic_flush,
1403         .atomic_enable = vmw_stdu_crtc_atomic_enable,
1404         .atomic_disable = vmw_stdu_crtc_atomic_disable,
1405 };
1406
1407
1408 /**
1409  * vmw_stdu_init - Sets up a Screen Target Display Unit
1410  *
1411  * @dev_priv: VMW DRM device
1412  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1413  *
1414  * This function is called once per CRTC, and allocates one Screen Target
1415  * display unit to represent that CRTC.  Since the SVGA device does not separate
1416  * out encoder and connector, they are represented as part of the STDU as well.
1417  */
1418 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1419 {
1420         struct vmw_screen_target_display_unit *stdu;
1421         struct drm_device *dev = dev_priv->dev;
1422         struct drm_connector *connector;
1423         struct drm_encoder *encoder;
1424         struct drm_plane *primary, *cursor;
1425         struct drm_crtc *crtc;
1426         int    ret;
1427
1428
1429         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1430         if (!stdu)
1431                 return -ENOMEM;
1432
1433         stdu->base.unit = unit;
1434         crtc = &stdu->base.crtc;
1435         encoder = &stdu->base.encoder;
1436         connector = &stdu->base.connector;
1437         primary = &stdu->base.primary;
1438         cursor = &stdu->base.cursor;
1439
1440         stdu->base.pref_active = (unit == 0);
1441         stdu->base.pref_width  = dev_priv->initial_width;
1442         stdu->base.pref_height = dev_priv->initial_height;
1443
1444         /*
1445          * Remove this after enabling atomic because property values can
1446          * only exist in a state object
1447          */
1448         stdu->base.is_implicit = false;
1449
1450         /* Initialize primary plane */
1451         vmw_du_plane_reset(primary);
1452
1453         ret = drm_universal_plane_init(dev, primary,
1454                                        0, &vmw_stdu_plane_funcs,
1455                                        vmw_primary_plane_formats,
1456                                        ARRAY_SIZE(vmw_primary_plane_formats),
1457                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
1458         if (ret) {
1459                 DRM_ERROR("Failed to initialize primary plane");
1460                 goto err_free;
1461         }
1462
1463         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1464
1465         /* Initialize cursor plane */
1466         vmw_du_plane_reset(cursor);
1467
1468         ret = drm_universal_plane_init(dev, cursor,
1469                         0, &vmw_stdu_cursor_funcs,
1470                         vmw_cursor_plane_formats,
1471                         ARRAY_SIZE(vmw_cursor_plane_formats),
1472                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
1473         if (ret) {
1474                 DRM_ERROR("Failed to initialize cursor plane");
1475                 drm_plane_cleanup(&stdu->base.primary);
1476                 goto err_free;
1477         }
1478
1479         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1480
1481         vmw_du_connector_reset(connector);
1482
1483         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1484                                  DRM_MODE_CONNECTOR_VIRTUAL);
1485         if (ret) {
1486                 DRM_ERROR("Failed to initialize connector\n");
1487                 goto err_free;
1488         }
1489
1490         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1491         connector->status = vmw_du_connector_detect(connector, false);
1492         vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
1493
1494         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1495                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1496         if (ret) {
1497                 DRM_ERROR("Failed to initialize encoder\n");
1498                 goto err_free_connector;
1499         }
1500
1501         (void) drm_connector_attach_encoder(connector, encoder);
1502         encoder->possible_crtcs = (1 << unit);
1503         encoder->possible_clones = 0;
1504
1505         ret = drm_connector_register(connector);
1506         if (ret) {
1507                 DRM_ERROR("Failed to register connector\n");
1508                 goto err_free_encoder;
1509         }
1510
1511         vmw_du_crtc_reset(crtc);
1512         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1513                                         &stdu->base.cursor,
1514                                         &vmw_stdu_crtc_funcs, NULL);
1515         if (ret) {
1516                 DRM_ERROR("Failed to initialize CRTC\n");
1517                 goto err_free_unregister;
1518         }
1519
1520         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1521
1522         drm_mode_crtc_set_gamma_size(crtc, 256);
1523
1524         drm_object_attach_property(&connector->base,
1525                                    dev_priv->hotplug_mode_update_property, 1);
1526         drm_object_attach_property(&connector->base,
1527                                    dev->mode_config.suggested_x_property, 0);
1528         drm_object_attach_property(&connector->base,
1529                                    dev->mode_config.suggested_y_property, 0);
1530         if (dev_priv->implicit_placement_property)
1531                 drm_object_attach_property
1532                         (&connector->base,
1533                          dev_priv->implicit_placement_property,
1534                          stdu->base.is_implicit);
1535         return 0;
1536
1537 err_free_unregister:
1538         drm_connector_unregister(connector);
1539 err_free_encoder:
1540         drm_encoder_cleanup(encoder);
1541 err_free_connector:
1542         drm_connector_cleanup(connector);
1543 err_free:
1544         kfree(stdu);
1545         return ret;
1546 }
1547
1548
1549
1550 /**
1551  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1552  *
1553  *  @stdu:  Screen Target Display Unit to be destroyed
1554  *
1555  *  Clean up after vmw_stdu_init
1556  */
1557 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1558 {
1559         vmw_du_cleanup(&stdu->base);
1560         kfree(stdu);
1561 }
1562
1563
1564
1565 /******************************************************************************
1566  * Screen Target Display KMS Functions
1567  *
1568  * These functions are called by the common KMS code in vmwgfx_kms.c
1569  *****************************************************************************/
1570
1571 /**
1572  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1573  *
1574  * @dev_priv: VMW DRM device
1575  *
1576  * This function initialize a Screen Target based display device.  It checks
1577  * the capability bits to make sure the underlying hardware can support
1578  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1579  * Units, as supported by the display hardware.
1580  *
1581  * RETURNS:
1582  * 0 on success, error code otherwise
1583  */
1584 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1585 {
1586         struct drm_device *dev = dev_priv->dev;
1587         int i, ret;
1588
1589
1590         /* Do nothing if Screen Target support is turned off */
1591         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1592                 return -ENOSYS;
1593
1594         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1595                 return -ENOSYS;
1596
1597         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1598         if (unlikely(ret != 0))
1599                 return ret;
1600
1601         dev_priv->active_display_unit = vmw_du_screen_target;
1602
1603         vmw_kms_create_implicit_placement_property(dev_priv, false);
1604
1605         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1606                 ret = vmw_stdu_init(dev_priv, i);
1607
1608                 if (unlikely(ret != 0)) {
1609                         DRM_ERROR("Failed to initialize STDU %d", i);
1610                         return ret;
1611                 }
1612         }
1613
1614         DRM_INFO("Screen Target Display device initialized\n");
1615
1616         return 0;
1617 }