root/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

DEFINITIONS

1. vmw_stdu_crtc_destroy
2. vmw_stdu_define_st
3. vmw_stdu_bind_st
4. vmw_stdu_populate_update
5. vmw_stdu_update_st
6. vmw_stdu_destroy_st
7. vmw_stdu_crtc_mode_set_nofb
8. vmw_stdu_crtc_helper_prepare
9. vmw_stdu_crtc_atomic_enable
10. vmw_stdu_crtc_atomic_disable
11. vmw_stdu_bo_clip
12. vmw_stdu_bo_fifo_commit
13. vmw_stdu_bo_cpu_clip
14. vmw_stdu_bo_cpu_commit
15. vmw_kms_stdu_dma
16. vmw_kms_stdu_surface_clip
17. vmw_kms_stdu_surface_fifo_commit
18. vmw_kms_stdu_surface_dirty
19. vmw_stdu_encoder_destroy
20. vmw_stdu_connector_destroy
21. vmw_stdu_primary_plane_cleanup_fb
22. vmw_stdu_primary_plane_prepare_fb
23. vmw_stdu_bo_fifo_size
24. vmw_stdu_bo_fifo_size_cpu
25. vmw_stdu_bo_populate_dma
26. vmw_stdu_bo_populate_clip
27. vmw_stdu_bo_populate_update
28. vmw_stdu_bo_pre_clip_cpu
29. vmw_stdu_bo_clip_cpu
30. vmw_stdu_bo_populate_update_cpu
31. vmw_stdu_plane_update_bo
32. vmw_stdu_surface_fifo_size_same_display
33. vmw_stdu_surface_fifo_size
34. vmw_stdu_surface_update_proxy
35. vmw_stdu_surface_populate_copy
36. vmw_stdu_surface_populate_clip
37. vmw_stdu_surface_populate_update
38. vmw_stdu_plane_update_surface
39. vmw_stdu_primary_plane_atomic_update
40. vmw_stdu_init
41. vmw_stdu_destroy
42. vmw_kms_stdu_init_display

   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_crtc_state *old_state)
 412 {
 413 }
 414 
 415 static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
 416                                          struct drm_crtc_state *old_state)
 417 {
 418         struct vmw_private *dev_priv;
 419         struct vmw_screen_target_display_unit *stdu;
 420         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->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 };
 920 
 921 
 922 
 923 /******************************************************************************
 924  * Screen Target Display Unit Encoder Functions
 925  *****************************************************************************/
 926 
 927 /**
 928  * vmw_stdu_encoder_destroy - cleans up the STDU
 929  *
 930  * @encoder: used the get the containing STDU
 931  *
 932  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
 933  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
 934  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
 935  * get called.
 936  */
 937 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
 938 {
 939         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
 940 }
 941 
 942 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
 943         .destroy = vmw_stdu_encoder_destroy,
 944 };
 945 
 946 
 947 
 948 /******************************************************************************
 949  * Screen Target Display Unit Connector Functions
 950  *****************************************************************************/
 951 
 952 /**
 953  * vmw_stdu_connector_destroy - cleans up the STDU
 954  *
 955  * @connector: used to get the containing STDU
 956  *
 957  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
 958  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
 959  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
 960  * get called.
 961  */
 962 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
 963 {
 964         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
 965 }
 966 
 967 
 968 
 969 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
 970         .dpms = vmw_du_connector_dpms,
 971         .detect = vmw_du_connector_detect,
 972         .fill_modes = vmw_du_connector_fill_modes,
 973         .destroy = vmw_stdu_connector_destroy,
 974         .reset = vmw_du_connector_reset,
 975         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
 976         .atomic_destroy_state = vmw_du_connector_destroy_state,
 977 };
 978 
 979 
 980 static const struct
 981 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
 982 };
 983 
 984 
 985 
 986 /******************************************************************************
 987  * Screen Target Display Plane Functions
 988  *****************************************************************************/
 989 
 990 
 991 
 992 /**
 993  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
 994  *
 995  * @plane:  display plane
 996  * @old_state: Contains the FB to clean up
 997  *
 998  * Unpins the display surface
 999  *
1000  * Returns 0 on success
1001  */
1002 static void
1003 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1004                                   struct drm_plane_state *old_state)
1005 {
1006         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1007 
1008         if (vps->surf)
1009                 WARN_ON(!vps->pinned);
1010 
1011         vmw_du_plane_cleanup_fb(plane, old_state);
1012 
1013         vps->content_fb_type = SAME_AS_DISPLAY;
1014         vps->cpp = 0;
1015 }
1016 
1017 
1018 
1019 /**
1020  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1021  *
1022  * @plane:  display plane
1023  * @new_state: info on the new plane state, including the FB
1024  *
1025  * This function allocates a new display surface if the content is
1026  * backed by a buffer object.  The display surface is pinned here, and it'll
1027  * be unpinned in .cleanup_fb()
1028  *
1029  * Returns 0 on success
1030  */
1031 static int
1032 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1033                                   struct drm_plane_state *new_state)
1034 {
1035         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1036         struct drm_framebuffer *new_fb = new_state->fb;
1037         struct vmw_framebuffer *vfb;
1038         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1039         enum stdu_content_type new_content_type;
1040         struct vmw_framebuffer_surface *new_vfbs;
1041         struct drm_crtc *crtc = new_state->crtc;
1042         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1043         int ret;
1044 
1045         /* No FB to prepare */
1046         if (!new_fb) {
1047                 if (vps->surf) {
1048                         WARN_ON(vps->pinned != 0);
1049                         vmw_surface_unreference(&vps->surf);
1050                 }
1051 
1052                 return 0;
1053         }
1054 
1055         vfb = vmw_framebuffer_to_vfb(new_fb);
1056         new_vfbs = (vfb->bo) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1057 
1058         if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
1059             new_vfbs->surface->base_size.height == vdisplay)
1060                 new_content_type = SAME_AS_DISPLAY;
1061         else if (vfb->bo)
1062                 new_content_type = SEPARATE_BO;
1063         else
1064                 new_content_type = SEPARATE_SURFACE;
1065 
1066         if (new_content_type != SAME_AS_DISPLAY) {
1067                 struct vmw_surface content_srf;
1068                 struct drm_vmw_size display_base_size = {0};
1069 
1070                 display_base_size.width  = hdisplay;
1071                 display_base_size.height = vdisplay;
1072                 display_base_size.depth  = 1;
1073 
1074                 /*
1075                  * If content buffer is a buffer object, then we have to
1076                  * construct surface info
1077                  */
1078                 if (new_content_type == SEPARATE_BO) {
1079 
1080                         switch (new_fb->format->cpp[0]*8) {
1081                         case 32:
1082                                 content_srf.format = SVGA3D_X8R8G8B8;
1083                                 break;
1084 
1085                         case 16:
1086                                 content_srf.format = SVGA3D_R5G6B5;
1087                                 break;
1088 
1089                         case 8:
1090                                 content_srf.format = SVGA3D_P8;
1091                                 break;
1092 
1093                         default:
1094                                 DRM_ERROR("Invalid format\n");
1095                                 return -EINVAL;
1096                         }
1097 
1098                         content_srf.flags             = 0;
1099                         content_srf.mip_levels[0]     = 1;
1100                         content_srf.multisample_count = 0;
1101                         content_srf.multisample_pattern =
1102                                 SVGA3D_MS_PATTERN_NONE;
1103                         content_srf.quality_level = SVGA3D_MS_QUALITY_NONE;
1104                 } else {
1105                         content_srf = *new_vfbs->surface;
1106                 }
1107 
1108                 if (vps->surf) {
1109                         struct drm_vmw_size cur_base_size = vps->surf->base_size;
1110 
1111                         if (cur_base_size.width != display_base_size.width ||
1112                             cur_base_size.height != display_base_size.height ||
1113                             vps->surf->format != content_srf.format) {
1114                                 WARN_ON(vps->pinned != 0);
1115                                 vmw_surface_unreference(&vps->surf);
1116                         }
1117 
1118                 }
1119 
1120                 if (!vps->surf) {
1121                         ret = vmw_surface_gb_priv_define
1122                                 (crtc->dev,
1123                                  /* Kernel visible only */
1124                                  0,
1125                                  content_srf.flags,
1126                                  content_srf.format,
1127                                  true,  /* a scanout buffer */
1128                                  content_srf.mip_levels[0],
1129                                  content_srf.multisample_count,
1130                                  0,
1131                                  display_base_size,
1132                                  content_srf.multisample_pattern,
1133                                  content_srf.quality_level,
1134                                  &vps->surf);
1135                         if (ret != 0) {
1136                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1137                                 return ret;
1138                         }
1139                 }
1140         } else {
1141                 /*
1142                  * prepare_fb and clean_fb should only take care of pinning
1143                  * and unpinning.  References are tracked by state objects.
1144                  * The only time we add a reference in prepare_fb is if the
1145                  * state object doesn't have a reference to begin with
1146                  */
1147                 if (vps->surf) {
1148                         WARN_ON(vps->pinned != 0);
1149                         vmw_surface_unreference(&vps->surf);
1150                 }
1151 
1152                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1153         }
1154 
1155         if (vps->surf) {
1156 
1157                 /* Pin new surface before flipping */
1158                 ret = vmw_resource_pin(&vps->surf->res, false);
1159                 if (ret)
1160                         goto out_srf_unref;
1161 
1162                 vps->pinned++;
1163         }
1164 
1165         vps->content_fb_type = new_content_type;
1166 
1167         /*
1168          * This should only happen if the buffer object is too large to create a
1169          * proxy surface for.
1170          * If we are a 2D VM with a buffer object then we have to use CPU blit
1171          * so cache these mappings
1172          */
1173         if (vps->content_fb_type == SEPARATE_BO &&
1174             !(dev_priv->capabilities & SVGA_CAP_3D))
1175                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1176 
1177         return 0;
1178 
1179 out_srf_unref:
1180         vmw_surface_unreference(&vps->surf);
1181         return ret;
1182 }
1183 
1184 static uint32_t vmw_stdu_bo_fifo_size(struct vmw_du_update_plane *update,
1185                                       uint32_t num_hits)
1186 {
1187         return sizeof(struct vmw_stdu_dma) + sizeof(SVGA3dCopyBox) * num_hits +
1188                 sizeof(SVGA3dCmdSurfaceDMASuffix) +
1189                 sizeof(struct vmw_stdu_update);
1190 }
1191 
1192 static uint32_t vmw_stdu_bo_fifo_size_cpu(struct vmw_du_update_plane *update,
1193                                           uint32_t num_hits)
1194 {
1195         return sizeof(struct vmw_stdu_update_gb_image) +
1196                 sizeof(struct vmw_stdu_update);
1197 }
1198 
1199 static uint32_t vmw_stdu_bo_populate_dma(struct vmw_du_update_plane  *update,
1200                                          void *cmd, uint32_t num_hits)
1201 {
1202         struct vmw_screen_target_display_unit *stdu;
1203         struct vmw_framebuffer_bo *vfbbo;
1204         struct vmw_stdu_dma *cmd_dma = cmd;
1205 
1206         stdu = container_of(update->du, typeof(*stdu), base);
1207         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1208 
1209         cmd_dma->header.id = SVGA_3D_CMD_SURFACE_DMA;
1210         cmd_dma->header.size = sizeof(cmd_dma->body) +
1211                 sizeof(struct SVGA3dCopyBox) * num_hits +
1212                 sizeof(SVGA3dCmdSurfaceDMASuffix);
1213         vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &cmd_dma->body.guest.ptr);
1214         cmd_dma->body.guest.pitch = update->vfb->base.pitches[0];
1215         cmd_dma->body.host.sid = stdu->display_srf->res.id;
1216         cmd_dma->body.host.face = 0;
1217         cmd_dma->body.host.mipmap = 0;
1218         cmd_dma->body.transfer = SVGA3D_WRITE_HOST_VRAM;
1219 
1220         return sizeof(*cmd_dma);
1221 }
1222 
1223 static uint32_t vmw_stdu_bo_populate_clip(struct vmw_du_update_plane  *update,
1224                                           void *cmd, struct drm_rect *clip,
1225                                           uint32_t fb_x, uint32_t fb_y)
1226 {
1227         struct SVGA3dCopyBox *box = cmd;
1228 
1229         box->srcx = fb_x;
1230         box->srcy = fb_y;
1231         box->srcz = 0;
1232         box->x = clip->x1;
1233         box->y = clip->y1;
1234         box->z = 0;
1235         box->w = drm_rect_width(clip);
1236         box->h = drm_rect_height(clip);
1237         box->d = 1;
1238 
1239         return sizeof(*box);
1240 }
1241 
1242 static uint32_t vmw_stdu_bo_populate_update(struct vmw_du_update_plane  *update,
1243                                             void *cmd, struct drm_rect *bb)
1244 {
1245         struct vmw_screen_target_display_unit *stdu;
1246         struct vmw_framebuffer_bo *vfbbo;
1247         SVGA3dCmdSurfaceDMASuffix *suffix = cmd;
1248 
1249         stdu = container_of(update->du, typeof(*stdu), base);
1250         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1251 
1252         suffix->suffixSize = sizeof(*suffix);
1253         suffix->maximumOffset = vfbbo->buffer->base.num_pages * PAGE_SIZE;
1254 
1255         vmw_stdu_populate_update(&suffix[1], stdu->base.unit, bb->x1, bb->x2,
1256                                  bb->y1, bb->y2);
1257 
1258         return sizeof(*suffix) + sizeof(struct vmw_stdu_update);
1259 }
1260 
1261 static uint32_t vmw_stdu_bo_pre_clip_cpu(struct vmw_du_update_plane  *update,
1262                                          void *cmd, uint32_t num_hits)
1263 {
1264         struct vmw_du_update_plane_buffer *bo_update =
1265                 container_of(update, typeof(*bo_update), base);
1266 
1267         bo_update->fb_left = INT_MAX;
1268         bo_update->fb_top = INT_MAX;
1269 
1270         return 0;
1271 }
1272 
1273 static uint32_t vmw_stdu_bo_clip_cpu(struct vmw_du_update_plane  *update,
1274                                      void *cmd, struct drm_rect *clip,
1275                                      uint32_t fb_x, uint32_t fb_y)
1276 {
1277         struct vmw_du_update_plane_buffer *bo_update =
1278                 container_of(update, typeof(*bo_update), base);
1279 
1280         bo_update->fb_left = min_t(int, bo_update->fb_left, fb_x);
1281         bo_update->fb_top = min_t(int, bo_update->fb_top, fb_y);
1282 
1283         return 0;
1284 }
1285 
1286 static uint32_t
1287 vmw_stdu_bo_populate_update_cpu(struct vmw_du_update_plane  *update, void *cmd,
1288                                 struct drm_rect *bb)
1289 {
1290         struct vmw_du_update_plane_buffer *bo_update;
1291         struct vmw_screen_target_display_unit *stdu;
1292         struct vmw_framebuffer_bo *vfbbo;
1293         struct vmw_diff_cpy diff = VMW_CPU_BLIT_DIFF_INITIALIZER(0);
1294         struct vmw_stdu_update_gb_image *cmd_img = cmd;
1295         struct vmw_stdu_update *cmd_update;
1296         struct ttm_buffer_object *src_bo, *dst_bo;
1297         u32 src_offset, dst_offset;
1298         s32 src_pitch, dst_pitch;
1299         s32 width, height;
1300 
1301         bo_update = container_of(update, typeof(*bo_update), base);
1302         stdu = container_of(update->du, typeof(*stdu), base);
1303         vfbbo = container_of(update->vfb, typeof(*vfbbo), base);
1304 
1305         width = bb->x2 - bb->x1;
1306         height = bb->y2 - bb->y1;
1307 
1308         diff.cpp = stdu->cpp;
1309 
1310         dst_bo = &stdu->display_srf->res.backup->base;
1311         dst_pitch = stdu->display_srf->base_size.width * stdu->cpp;
1312         dst_offset = bb->y1 * dst_pitch + bb->x1 * stdu->cpp;
1313 
1314         src_bo = &vfbbo->buffer->base;
1315         src_pitch = update->vfb->base.pitches[0];
1316         src_offset = bo_update->fb_top * src_pitch + bo_update->fb_left *
1317                 stdu->cpp;
1318 
1319         (void) vmw_bo_cpu_blit(dst_bo, dst_offset, dst_pitch, src_bo,
1320                                src_offset, src_pitch, width * stdu->cpp, height,
1321                                &diff);
1322 
1323         if (drm_rect_visible(&diff.rect)) {
1324                 SVGA3dBox *box = &cmd_img->body.box;
1325 
1326                 cmd_img->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1327                 cmd_img->header.size = sizeof(cmd_img->body);
1328                 cmd_img->body.image.sid = stdu->display_srf->res.id;
1329                 cmd_img->body.image.face = 0;
1330                 cmd_img->body.image.mipmap = 0;
1331 
1332                 box->x = diff.rect.x1;
1333                 box->y = diff.rect.y1;
1334                 box->z = 0;
1335                 box->w = drm_rect_width(&diff.rect);
1336                 box->h = drm_rect_height(&diff.rect);
1337                 box->d = 1;
1338 
1339                 cmd_update = (struct vmw_stdu_update *)&cmd_img[1];
1340                 vmw_stdu_populate_update(cmd_update, stdu->base.unit,
1341                                          diff.rect.x1, diff.rect.x2,
1342                                          diff.rect.y1, diff.rect.y2);
1343 
1344                 return sizeof(*cmd_img) + sizeof(*cmd_update);
1345         }
1346 
1347         return 0;
1348 }
1349 
1350 /**
1351  * vmw_stdu_plane_update_bo - Update display unit for bo backed fb.
1352  * @dev_priv: device private.
1353  * @plane: plane state.
1354  * @old_state: old plane state.
1355  * @vfb: framebuffer which is blitted to display unit.
1356  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
1357  *             The returned fence pointer may be NULL in which case the device
1358  *             has already synchronized.
1359  *
1360  * Return: 0 on success or a negative error code on failure.
1361  */
1362 static int vmw_stdu_plane_update_bo(struct vmw_private *dev_priv,
1363                                     struct drm_plane *plane,
1364                                     struct drm_plane_state *old_state,
1365                                     struct vmw_framebuffer *vfb,
1366                                     struct vmw_fence_obj **out_fence)
1367 {
1368         struct vmw_du_update_plane_buffer bo_update;
1369 
1370         memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
1371         bo_update.base.plane = plane;
1372         bo_update.base.old_state = old_state;
1373         bo_update.base.dev_priv = dev_priv;
1374         bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
1375         bo_update.base.vfb = vfb;
1376         bo_update.base.out_fence = out_fence;
1377         bo_update.base.mutex = NULL;
1378         bo_update.base.cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
1379         bo_update.base.intr = false;
1380 
1381         /*
1382          * VM without 3D support don't have surface DMA command and framebuffer
1383          * should be moved out of VRAM.
1384          */
1385         if (bo_update.base.cpu_blit) {
1386                 bo_update.base.calc_fifo_size = vmw_stdu_bo_fifo_size_cpu;
1387                 bo_update.base.pre_clip = vmw_stdu_bo_pre_clip_cpu;
1388                 bo_update.base.clip = vmw_stdu_bo_clip_cpu;
1389                 bo_update.base.post_clip = vmw_stdu_bo_populate_update_cpu;
1390         } else {
1391                 bo_update.base.calc_fifo_size = vmw_stdu_bo_fifo_size;
1392                 bo_update.base.pre_clip = vmw_stdu_bo_populate_dma;
1393                 bo_update.base.clip = vmw_stdu_bo_populate_clip;
1394                 bo_update.base.post_clip = vmw_stdu_bo_populate_update;
1395         }
1396 
1397         return vmw_du_helper_plane_update(&bo_update.base);
1398 }
1399 
1400 static uint32_t
1401 vmw_stdu_surface_fifo_size_same_display(struct vmw_du_update_plane *update,
1402                                         uint32_t num_hits)
1403 {
1404         struct vmw_framebuffer_surface *vfbs;
1405         uint32_t size = 0;
1406 
1407         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1408 
1409         if (vfbs->is_bo_proxy)
1410                 size += sizeof(struct vmw_stdu_update_gb_image) * num_hits;
1411 
1412         size += sizeof(struct vmw_stdu_update);
1413 
1414         return size;
1415 }
1416 
1417 static uint32_t vmw_stdu_surface_fifo_size(struct vmw_du_update_plane *update,
1418                                            uint32_t num_hits)
1419 {
1420         struct vmw_framebuffer_surface *vfbs;
1421         uint32_t size = 0;
1422 
1423         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1424 
1425         if (vfbs->is_bo_proxy)
1426                 size += sizeof(struct vmw_stdu_update_gb_image) * num_hits;
1427 
1428         size += sizeof(struct vmw_stdu_surface_copy) + sizeof(SVGA3dCopyBox) *
1429                 num_hits + sizeof(struct vmw_stdu_update);
1430 
1431         return size;
1432 }
1433 
1434 static uint32_t
1435 vmw_stdu_surface_update_proxy(struct vmw_du_update_plane *update, void *cmd)
1436 {
1437         struct vmw_framebuffer_surface *vfbs;
1438         struct drm_plane_state *state = update->plane->state;
1439         struct drm_plane_state *old_state = update->old_state;
1440         struct vmw_stdu_update_gb_image *cmd_update = cmd;
1441         struct drm_atomic_helper_damage_iter iter;
1442         struct drm_rect clip;
1443         uint32_t copy_size = 0;
1444 
1445         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1446 
1447         /*
1448          * proxy surface is special where a buffer object type fb is wrapped
1449          * in a surface and need an update gb image command to sync with device.
1450          */
1451         drm_atomic_helper_damage_iter_init(&iter, old_state, state);
1452         drm_atomic_for_each_plane_damage(&iter, &clip) {
1453                 SVGA3dBox *box = &cmd_update->body.box;
1454 
1455                 cmd_update->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
1456                 cmd_update->header.size = sizeof(cmd_update->body);
1457                 cmd_update->body.image.sid = vfbs->surface->res.id;
1458                 cmd_update->body.image.face = 0;
1459                 cmd_update->body.image.mipmap = 0;
1460 
1461                 box->x = clip.x1;
1462                 box->y = clip.y1;
1463                 box->z = 0;
1464                 box->w = drm_rect_width(&clip);
1465                 box->h = drm_rect_height(&clip);
1466                 box->d = 1;
1467 
1468                 copy_size += sizeof(*cmd_update);
1469                 cmd_update++;
1470         }
1471 
1472         return copy_size;
1473 }
1474 
1475 static uint32_t
1476 vmw_stdu_surface_populate_copy(struct vmw_du_update_plane  *update, void *cmd,
1477                                uint32_t num_hits)
1478 {
1479         struct vmw_screen_target_display_unit *stdu;
1480         struct vmw_framebuffer_surface *vfbs;
1481         struct vmw_stdu_surface_copy *cmd_copy = cmd;
1482 
1483         stdu = container_of(update->du, typeof(*stdu), base);
1484         vfbs = container_of(update->vfb, typeof(*vfbs), base);
1485 
1486         cmd_copy->header.id = SVGA_3D_CMD_SURFACE_COPY;
1487         cmd_copy->header.size = sizeof(cmd_copy->body) + sizeof(SVGA3dCopyBox) *
1488                 num_hits;
1489         cmd_copy->body.src.sid = vfbs->surface->res.id;
1490         cmd_copy->body.dest.sid = stdu->display_srf->res.id;
1491 
1492         return sizeof(*cmd_copy);
1493 }
1494 
1495 static uint32_t
1496 vmw_stdu_surface_populate_clip(struct vmw_du_update_plane  *update, void *cmd,
1497                                struct drm_rect *clip, uint32_t fb_x,
1498                                uint32_t fb_y)
1499 {
1500         struct SVGA3dCopyBox *box = cmd;
1501 
1502         box->srcx = fb_x;
1503         box->srcy = fb_y;
1504         box->srcz = 0;
1505         box->x = clip->x1;
1506         box->y = clip->y1;
1507         box->z = 0;
1508         box->w = drm_rect_width(clip);
1509         box->h = drm_rect_height(clip);
1510         box->d = 1;
1511 
1512         return sizeof(*box);
1513 }
1514 
1515 static uint32_t
1516 vmw_stdu_surface_populate_update(struct vmw_du_update_plane  *update, void *cmd,
1517                                  struct drm_rect *bb)
1518 {
1519         vmw_stdu_populate_update(cmd, update->du->unit, bb->x1, bb->x2, bb->y1,
1520                                  bb->y2);
1521 
1522         return sizeof(struct vmw_stdu_update);
1523 }
1524 
1525 /**
1526  * vmw_stdu_plane_update_surface - Update display unit for surface backed fb
1527  * @dev_priv: Device private
1528  * @plane: Plane state
1529  * @old_state: Old plane state
1530  * @vfb: Framebuffer which is blitted to display unit
1531  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
1532  *             The returned fence pointer may be NULL in which case the device
1533  *             has already synchronized.
1534  *
1535  * Return: 0 on success or a negative error code on failure.
1536  */
1537 static int vmw_stdu_plane_update_surface(struct vmw_private *dev_priv,
1538                                          struct drm_plane *plane,
1539                                          struct drm_plane_state *old_state,
1540                                          struct vmw_framebuffer *vfb,
1541                                          struct vmw_fence_obj **out_fence)
1542 {
1543         struct vmw_du_update_plane srf_update;
1544         struct vmw_screen_target_display_unit *stdu;
1545         struct vmw_framebuffer_surface *vfbs;
1546 
1547         stdu = vmw_crtc_to_stdu(plane->state->crtc);
1548         vfbs = container_of(vfb, typeof(*vfbs), base);
1549 
1550         memset(&srf_update, 0, sizeof(struct vmw_du_update_plane));
1551         srf_update.plane = plane;
1552         srf_update.old_state = old_state;
1553         srf_update.dev_priv = dev_priv;
1554         srf_update.du = vmw_crtc_to_du(plane->state->crtc);
1555         srf_update.vfb = vfb;
1556         srf_update.out_fence = out_fence;
1557         srf_update.mutex = &dev_priv->cmdbuf_mutex;
1558         srf_update.cpu_blit = false;
1559         srf_update.intr = true;
1560 
1561         if (vfbs->is_bo_proxy)
1562                 srf_update.post_prepare = vmw_stdu_surface_update_proxy;
1563 
1564         if (vfbs->surface->res.id != stdu->display_srf->res.id) {
1565                 srf_update.calc_fifo_size = vmw_stdu_surface_fifo_size;
1566                 srf_update.pre_clip = vmw_stdu_surface_populate_copy;
1567                 srf_update.clip = vmw_stdu_surface_populate_clip;
1568         } else {
1569                 srf_update.calc_fifo_size =
1570                         vmw_stdu_surface_fifo_size_same_display;
1571         }
1572 
1573         srf_update.post_clip = vmw_stdu_surface_populate_update;
1574 
1575         return vmw_du_helper_plane_update(&srf_update);
1576 }
1577 
1578 /**
1579  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1580  * @plane: display plane
1581  * @old_state: Only used to get crtc info
1582  *
1583  * Formally update stdu->display_srf to the new plane, and bind the new
1584  * plane STDU.  This function is called during the commit phase when
1585  * all the preparation have been done and all the configurations have
1586  * been checked.
1587  */
1588 static void
1589 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1590                                      struct drm_plane_state *old_state)
1591 {
1592         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1593         struct drm_crtc *crtc = plane->state->crtc;
1594         struct vmw_screen_target_display_unit *stdu;
1595         struct drm_pending_vblank_event *event;
1596         struct vmw_fence_obj *fence = NULL;
1597         struct vmw_private *dev_priv;
1598         int ret;
1599 
1600         /* If case of device error, maintain consistent atomic state */
1601         if (crtc && plane->state->fb) {
1602                 struct vmw_framebuffer *vfb =
1603                         vmw_framebuffer_to_vfb(plane->state->fb);
1604                 stdu = vmw_crtc_to_stdu(crtc);
1605                 dev_priv = vmw_priv(crtc->dev);
1606 
1607                 stdu->display_srf = vps->surf;
1608                 stdu->content_fb_type = vps->content_fb_type;
1609                 stdu->cpp = vps->cpp;
1610 
1611                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1612                 if (ret)
1613                         DRM_ERROR("Failed to bind surface to STDU.\n");
1614 
1615                 if (vfb->bo)
1616                         ret = vmw_stdu_plane_update_bo(dev_priv, plane,
1617                                                        old_state, vfb, &fence);
1618                 else
1619                         ret = vmw_stdu_plane_update_surface(dev_priv, plane,
1620                                                             old_state, vfb,
1621                                                             &fence);
1622                 if (ret)
1623                         DRM_ERROR("Failed to update STDU.\n");
1624         } else {
1625                 crtc = old_state->crtc;
1626                 stdu = vmw_crtc_to_stdu(crtc);
1627                 dev_priv = vmw_priv(crtc->dev);
1628 
1629                 /* Blank STDU when fb and crtc are NULL */
1630                 if (!stdu->defined)
1631                         return;
1632 
1633                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1634                 if (ret)
1635                         DRM_ERROR("Failed to blank STDU\n");
1636 
1637                 ret = vmw_stdu_update_st(dev_priv, stdu);
1638                 if (ret)
1639                         DRM_ERROR("Failed to update STDU.\n");
1640 
1641                 return;
1642         }
1643 
1644         /* In case of error, vblank event is send in vmw_du_crtc_atomic_flush */
1645         event = crtc->state->event;
1646         if (event && fence) {
1647                 struct drm_file *file_priv = event->base.file_priv;
1648 
1649                 ret = vmw_event_fence_action_queue(file_priv,
1650                                                    fence,
1651                                                    &event->base,
1652                                                    &event->event.vbl.tv_sec,
1653                                                    &event->event.vbl.tv_usec,
1654                                                    true);
1655                 if (ret)
1656                         DRM_ERROR("Failed to queue event on fence.\n");
1657                 else
1658                         crtc->state->event = NULL;
1659         }
1660 
1661         if (fence)
1662                 vmw_fence_obj_unreference(&fence);
1663 }
1664 
1665 
1666 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1667         .update_plane = drm_atomic_helper_update_plane,
1668         .disable_plane = drm_atomic_helper_disable_plane,
1669         .destroy = vmw_du_primary_plane_destroy,
1670         .reset = vmw_du_plane_reset,
1671         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1672         .atomic_destroy_state = vmw_du_plane_destroy_state,
1673 };
1674 
1675 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1676         .update_plane = drm_atomic_helper_update_plane,
1677         .disable_plane = drm_atomic_helper_disable_plane,
1678         .destroy = vmw_du_cursor_plane_destroy,
1679         .reset = vmw_du_plane_reset,
1680         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1681         .atomic_destroy_state = vmw_du_plane_destroy_state,
1682 };
1683 
1684 
1685 /*
1686  * Atomic Helpers
1687  */
1688 static const struct
1689 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1690         .atomic_check = vmw_du_cursor_plane_atomic_check,
1691         .atomic_update = vmw_du_cursor_plane_atomic_update,
1692         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1693         .cleanup_fb = vmw_du_plane_cleanup_fb,
1694 };
1695 
1696 static const struct
1697 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1698         .atomic_check = vmw_du_primary_plane_atomic_check,
1699         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1700         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1701         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1702 };
1703 
1704 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1705         .prepare = vmw_stdu_crtc_helper_prepare,
1706         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1707         .atomic_check = vmw_du_crtc_atomic_check,
1708         .atomic_begin = vmw_du_crtc_atomic_begin,
1709         .atomic_flush = vmw_du_crtc_atomic_flush,
1710         .atomic_enable = vmw_stdu_crtc_atomic_enable,
1711         .atomic_disable = vmw_stdu_crtc_atomic_disable,
1712 };
1713 
1714 
1715 /**
1716  * vmw_stdu_init - Sets up a Screen Target Display Unit
1717  *
1718  * @dev_priv: VMW DRM device
1719  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1720  *
1721  * This function is called once per CRTC, and allocates one Screen Target
1722  * display unit to represent that CRTC.  Since the SVGA device does not separate
1723  * out encoder and connector, they are represented as part of the STDU as well.
1724  */
1725 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1726 {
1727         struct vmw_screen_target_display_unit *stdu;
1728         struct drm_device *dev = dev_priv->dev;
1729         struct drm_connector *connector;
1730         struct drm_encoder *encoder;
1731         struct drm_plane *primary, *cursor;
1732         struct drm_crtc *crtc;
1733         int    ret;
1734 
1735 
1736         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1737         if (!stdu)
1738                 return -ENOMEM;
1739 
1740         stdu->base.unit = unit;
1741         crtc = &stdu->base.crtc;
1742         encoder = &stdu->base.encoder;
1743         connector = &stdu->base.connector;
1744         primary = &stdu->base.primary;
1745         cursor = &stdu->base.cursor;
1746 
1747         stdu->base.pref_active = (unit == 0);
1748         stdu->base.pref_width  = dev_priv->initial_width;
1749         stdu->base.pref_height = dev_priv->initial_height;
1750         stdu->base.is_implicit = false;
1751 
1752         /* Initialize primary plane */
1753         vmw_du_plane_reset(primary);
1754 
1755         ret = drm_universal_plane_init(dev, primary,
1756                                        0, &vmw_stdu_plane_funcs,
1757                                        vmw_primary_plane_formats,
1758                                        ARRAY_SIZE(vmw_primary_plane_formats),
1759                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
1760         if (ret) {
1761                 DRM_ERROR("Failed to initialize primary plane");
1762                 goto err_free;
1763         }
1764 
1765         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1766         drm_plane_enable_fb_damage_clips(primary);
1767 
1768         /* Initialize cursor plane */
1769         vmw_du_plane_reset(cursor);
1770 
1771         ret = drm_universal_plane_init(dev, cursor,
1772                         0, &vmw_stdu_cursor_funcs,
1773                         vmw_cursor_plane_formats,
1774                         ARRAY_SIZE(vmw_cursor_plane_formats),
1775                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
1776         if (ret) {
1777                 DRM_ERROR("Failed to initialize cursor plane");
1778                 drm_plane_cleanup(&stdu->base.primary);
1779                 goto err_free;
1780         }
1781 
1782         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1783 
1784         vmw_du_connector_reset(connector);
1785 
1786         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1787                                  DRM_MODE_CONNECTOR_VIRTUAL);
1788         if (ret) {
1789                 DRM_ERROR("Failed to initialize connector\n");
1790                 goto err_free;
1791         }
1792 
1793         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1794         connector->status = vmw_du_connector_detect(connector, false);
1795 
1796         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1797                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1798         if (ret) {
1799                 DRM_ERROR("Failed to initialize encoder\n");
1800                 goto err_free_connector;
1801         }
1802 
1803         (void) drm_connector_attach_encoder(connector, encoder);
1804         encoder->possible_crtcs = (1 << unit);
1805         encoder->possible_clones = 0;
1806 
1807         ret = drm_connector_register(connector);
1808         if (ret) {
1809                 DRM_ERROR("Failed to register connector\n");
1810                 goto err_free_encoder;
1811         }
1812 
1813         vmw_du_crtc_reset(crtc);
1814         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1815                                         &stdu->base.cursor,
1816                                         &vmw_stdu_crtc_funcs, NULL);
1817         if (ret) {
1818                 DRM_ERROR("Failed to initialize CRTC\n");
1819                 goto err_free_unregister;
1820         }
1821 
1822         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1823 
1824         drm_mode_crtc_set_gamma_size(crtc, 256);
1825 
1826         drm_object_attach_property(&connector->base,
1827                                    dev_priv->hotplug_mode_update_property, 1);
1828         drm_object_attach_property(&connector->base,
1829                                    dev->mode_config.suggested_x_property, 0);
1830         drm_object_attach_property(&connector->base,
1831                                    dev->mode_config.suggested_y_property, 0);
1832         return 0;
1833 
1834 err_free_unregister:
1835         drm_connector_unregister(connector);
1836 err_free_encoder:
1837         drm_encoder_cleanup(encoder);
1838 err_free_connector:
1839         drm_connector_cleanup(connector);
1840 err_free:
1841         kfree(stdu);
1842         return ret;
1843 }
1844 
1845 
1846 
1847 /**
1848  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1849  *
1850  *  @stdu:  Screen Target Display Unit to be destroyed
1851  *
1852  *  Clean up after vmw_stdu_init
1853  */
1854 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1855 {
1856         vmw_du_cleanup(&stdu->base);
1857         kfree(stdu);
1858 }
1859 
1860 
1861 
1862 /******************************************************************************
1863  * Screen Target Display KMS Functions
1864  *
1865  * These functions are called by the common KMS code in vmwgfx_kms.c
1866  *****************************************************************************/
1867 
1868 /**
1869  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1870  *
1871  * @dev_priv: VMW DRM device
1872  *
1873  * This function initialize a Screen Target based display device.  It checks
1874  * the capability bits to make sure the underlying hardware can support
1875  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1876  * Units, as supported by the display hardware.
1877  *
1878  * RETURNS:
1879  * 0 on success, error code otherwise
1880  */
1881 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1882 {
1883         struct drm_device *dev = dev_priv->dev;
1884         int i, ret;
1885 
1886 
1887         /* Do nothing if Screen Target support is turned off */
1888         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1889                 return -ENOSYS;
1890 
1891         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1892                 return -ENOSYS;
1893 
1894         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1895         if (unlikely(ret != 0))
1896                 return ret;
1897 
1898         dev_priv->active_display_unit = vmw_du_screen_target;
1899 
1900         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1901                 ret = vmw_stdu_init(dev_priv, i);
1902 
1903                 if (unlikely(ret != 0)) {
1904                         DRM_ERROR("Failed to initialize STDU %d", i);
1905                         return ret;
1906                 }
1907         }
1908 
1909         DRM_INFO("Screen Target Display device initialized\n");
1910 
1911         return 0;
1912 }