drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2011-2015 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 <drm/drm_plane_helper.h>
  30 #include <drm/drm_atomic.h>
  31 #include <drm/drm_atomic_helper.h>
  32 #include <drm/drm_damage_helper.h>
  33
  34
  35 #define vmw_crtc_to_sou(x) \
  36         container_of(x, struct vmw_screen_object_unit, base.crtc)
  37 #define vmw_encoder_to_sou(x) \
  38         container_of(x, struct vmw_screen_object_unit, base.encoder)
  39 #define vmw_connector_to_sou(x) \
  40         container_of(x, struct vmw_screen_object_unit, base.connector)
  41
  42 /**
  43  * struct vmw_kms_sou_surface_dirty - Closure structure for
  44  * blit surface to screen command.
  45  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
  46  * @left: Left side of bounding box.
  47  * @right: Right side of bounding box.
  48  * @top: Top side of bounding box.
  49  * @bottom: Bottom side of bounding box.
  50  * @dst_x: Difference between source clip rects and framebuffer coordinates.
  51  * @dst_y: Difference between source clip rects and framebuffer coordinates.
  52  * @sid: Surface id of surface to copy from.
  53  */
  54 struct vmw_kms_sou_surface_dirty {
  55         struct vmw_kms_dirty base;
  56         s32 left, right, top, bottom;
  57         s32 dst_x, dst_y;
  58         u32 sid;
  59 };
  60
  61 /*
  62  * SVGA commands that are used by this code. Please see the device headers
  63  * for explanation.
  64  */
  65 struct vmw_kms_sou_readback_blit {
  66         uint32 header;
  67         SVGAFifoCmdBlitScreenToGMRFB body;
  68 };
  69
  70 struct vmw_kms_sou_bo_blit {
  71         uint32 header;
  72         SVGAFifoCmdBlitGMRFBToScreen body;
  73 };
  74
  75 struct vmw_kms_sou_dirty_cmd {
  76         SVGA3dCmdHeader header;
  77         SVGA3dCmdBlitSurfaceToScreen body;
  78 };
  79
  80 struct vmw_kms_sou_define_gmrfb {
  81         uint32_t header;
  82         SVGAFifoCmdDefineGMRFB body;
  83 };
  84
  85 /**
  86  * Display unit using screen objects.
  87  */
  88 struct vmw_screen_object_unit {
  89         struct vmw_display_unit base;
  90
  91         unsigned long buffer_size; /**< Size of allocated buffer */
  92         struct vmw_buffer_object *buffer; /**< Backing store buffer */
  93
  94         bool defined;
  95 };
  96
  97 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
  98 {
  99         vmw_du_cleanup(&sou->base);
 100         kfree(sou);
 101 }
 102
 103
 104 /*
 105  * Screen Object Display Unit CRTC functions
 106  */
 107
 108 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
 109 {
 110         vmw_sou_destroy(vmw_crtc_to_sou(crtc));
 111 }
 112
 113 /**
 114  * Send the fifo command to create a screen.
 115  */
 116 static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
 117                                struct vmw_screen_object_unit *sou,
 118                                int x, int y,
 119                                struct drm_display_mode *mode)
 120 {
 121         size_t fifo_size;
 122
 123         struct {
 124                 struct {
 125                         uint32_t cmdType;
 126                 } header;
 127                 SVGAScreenObject obj;
 128         } *cmd;
 129
 130         BUG_ON(!sou->buffer);
 131
 132         fifo_size = sizeof(*cmd);
 133         cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size);
 134         if (unlikely(cmd == NULL))
 135                 return -ENOMEM;
 136
 137         memset(cmd, 0, fifo_size);
 138         cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
 139         cmd->obj.structSize = sizeof(SVGAScreenObject);
 140         cmd->obj.id = sou->base.unit;
 141         cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
 142                 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
 143         cmd->obj.size.width = mode->hdisplay;
 144         cmd->obj.size.height = mode->vdisplay;
 145         cmd->obj.root.x = x;
 146         cmd->obj.root.y = y;
 147         sou->base.set_gui_x = cmd->obj.root.x;
 148         sou->base.set_gui_y = cmd->obj.root.y;
 149
 150         /* Ok to assume that buffer is pinned in vram */
 151         vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
 152         cmd->obj.backingStore.pitch = mode->hdisplay * 4;
 153
 154         vmw_fifo_commit(dev_priv, fifo_size);
 155
 156         sou->defined = true;
 157
 158         return 0;
 159 }
 160
 161 /**
 162  * Send the fifo command to destroy a screen.
 163  */
 164 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
 165                                 struct vmw_screen_object_unit *sou)
 166 {
 167         size_t fifo_size;
 168         int ret;
 169
 170         struct {
 171                 struct {
 172                         uint32_t cmdType;
 173                 } header;
 174                 SVGAFifoCmdDestroyScreen body;
 175         } *cmd;
 176
 177         /* no need to do anything */
 178         if (unlikely(!sou->defined))
 179                 return 0;
 180
 181         fifo_size = sizeof(*cmd);
 182         cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size);
 183         if (unlikely(cmd == NULL))
 184                 return -ENOMEM;
 185
 186         memset(cmd, 0, fifo_size);
 187         cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
 188         cmd->body.screenId = sou->base.unit;
 189
 190         vmw_fifo_commit(dev_priv, fifo_size);
 191
 192         /* Force sync */
 193         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 194         if (unlikely(ret != 0))
 195                 DRM_ERROR("Failed to sync with HW");
 196         else
 197                 sou->defined = false;
 198
 199         return ret;
 200 }
 201
 202 /**
 203  * vmw_sou_crtc_mode_set_nofb - Create new screen
 204  *
 205  * @crtc: CRTC associated with the new screen
 206  *
 207  * This function creates/destroys a screen.  This function cannot fail, so if
 208  * somehow we run into a failure, just do the best we can to get out.
 209  */
 210 static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
 211 {
 212         struct vmw_private *dev_priv;
 213         struct vmw_screen_object_unit *sou;
 214         struct vmw_framebuffer *vfb;
 215         struct drm_framebuffer *fb;
 216         struct drm_plane_state *ps;
 217         struct vmw_plane_state *vps;
 218         int ret;
 219
 220         sou = vmw_crtc_to_sou(crtc);
 221         dev_priv = vmw_priv(crtc->dev);
 222         ps = crtc->primary->state;
 223         fb = ps->fb;
 224         vps = vmw_plane_state_to_vps(ps);
 225
 226         vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 227
 228         if (sou->defined) {
 229                 ret = vmw_sou_fifo_destroy(dev_priv, sou);
 230                 if (ret) {
 231                         DRM_ERROR("Failed to destroy Screen Object\n");
 232                         return;
 233                 }
 234         }
 235
 236         if (vfb) {
 237                 struct drm_connector_state *conn_state;
 238                 struct vmw_connector_state *vmw_conn_state;
 239                 int x, y;
 240
 241                 sou->buffer = vps->bo;
 242                 sou->buffer_size = vps->bo_size;
 243
 244                 conn_state = sou->base.connector.state;
 245                 vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
 246
 247                 x = vmw_conn_state->gui_x;
 248                 y = vmw_conn_state->gui_y;
 249
 250                 ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
 251                 if (ret)
 252                         DRM_ERROR("Failed to define Screen Object %dx%d\n",
 253                                   crtc->x, crtc->y);
 254
 255         } else {
 256                 sou->buffer = NULL;
 257                 sou->buffer_size = 0;
 258         }
 259 }
 260
 261 /**
 262  * vmw_sou_crtc_helper_prepare - Noop
 263  *
 264  * @crtc: CRTC associated with the new screen
 265  *
 266  * Prepares the CRTC for a mode set, but we don't need to do anything here.
 267  */
 268 static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc)
 269 {
 270 }
 271
 272 /**
 273  * vmw_sou_crtc_atomic_enable - Noop
 274  *
 275  * @crtc: CRTC associated with the new screen
 276  *
 277  * This is called after a mode set has been completed.
 278  */
 279 static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc,
 280                                        struct drm_crtc_state *old_state)
 281 {
 282 }
 283
 284 /**
 285  * vmw_sou_crtc_atomic_disable - Turns off CRTC
 286  *
 287  * @crtc: CRTC to be turned off
 288  */
 289 static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc,
 290                                         struct drm_crtc_state *old_state)
 291 {
 292         struct vmw_private *dev_priv;
 293         struct vmw_screen_object_unit *sou;
 294         int ret;
 295
 296
 297         if (!crtc) {
 298                 DRM_ERROR("CRTC is NULL\n");
 299                 return;
 300         }
 301
 302         sou = vmw_crtc_to_sou(crtc);
 303         dev_priv = vmw_priv(crtc->dev);
 304
 305         if (sou->defined) {
 306                 ret = vmw_sou_fifo_destroy(dev_priv, sou);
 307                 if (ret)
 308                         DRM_ERROR("Failed to destroy Screen Object\n");
 309         }
 310 }
 311
 312 static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
 313         .gamma_set = vmw_du_crtc_gamma_set,
 314         .destroy = vmw_sou_crtc_destroy,
 315         .reset = vmw_du_crtc_reset,
 316         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
 317         .atomic_destroy_state = vmw_du_crtc_destroy_state,
 318         .set_config = drm_atomic_helper_set_config,
 319         .page_flip = drm_atomic_helper_page_flip,
 320 };
 321
 322 /*
 323  * Screen Object Display Unit encoder functions
 324  */
 325
 326 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
 327 {
 328         vmw_sou_destroy(vmw_encoder_to_sou(encoder));
 329 }
 330
 331 static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
 332         .destroy = vmw_sou_encoder_destroy,
 333 };
 334
 335 /*
 336  * Screen Object Display Unit connector functions
 337  */
 338
 339 static void vmw_sou_connector_destroy(struct drm_connector *connector)
 340 {
 341         vmw_sou_destroy(vmw_connector_to_sou(connector));
 342 }
 343
 344 static const struct drm_connector_funcs vmw_sou_connector_funcs = {
 345         .dpms = vmw_du_connector_dpms,
 346         .detect = vmw_du_connector_detect,
 347         .fill_modes = vmw_du_connector_fill_modes,
 348         .destroy = vmw_sou_connector_destroy,
 349         .reset = vmw_du_connector_reset,
 350         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
 351         .atomic_destroy_state = vmw_du_connector_destroy_state,
 352 };
 353
 354
 355 static const struct
 356 drm_connector_helper_funcs vmw_sou_connector_helper_funcs = {
 357 };
 358
 359
 360
 361 /*
 362  * Screen Object Display Plane Functions
 363  */
 364
 365 /**
 366  * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
 367  *
 368  * @plane:  display plane
 369  * @old_state: Contains the FB to clean up
 370  *
 371  * Unpins the display surface
 372  *
 373  * Returns 0 on success
 374  */
 375 static void
 376 vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane,
 377                                  struct drm_plane_state *old_state)
 378 {
 379         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
 380         struct drm_crtc *crtc = plane->state->crtc ?
 381                 plane->state->crtc : old_state->crtc;
 382
 383         if (vps->bo)
 384                 vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false);
 385         vmw_bo_unreference(&vps->bo);
 386         vps->bo_size = 0;
 387
 388         vmw_du_plane_cleanup_fb(plane, old_state);
 389 }
 390
 391
 392 /**
 393  * vmw_sou_primary_plane_prepare_fb - allocate backing buffer
 394  *
 395  * @plane:  display plane
 396  * @new_state: info on the new plane state, including the FB
 397  *
 398  * The SOU backing buffer is our equivalent of the display plane.
 399  *
 400  * Returns 0 on success
 401  */
 402 static int
 403 vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
 404                                  struct drm_plane_state *new_state)
 405 {
 406         struct drm_framebuffer *new_fb = new_state->fb;
 407         struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
 408         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
 409         struct vmw_private *dev_priv;
 410         size_t size;
 411         int ret;
 412
 413
 414         if (!new_fb) {
 415                 vmw_bo_unreference(&vps->bo);
 416                 vps->bo_size = 0;
 417
 418                 return 0;
 419         }
 420
 421         size = new_state->crtc_w * new_state->crtc_h * 4;
 422         dev_priv = vmw_priv(crtc->dev);
 423
 424         if (vps->bo) {
 425                 if (vps->bo_size == size) {
 426                         /*
 427                          * Note that this might temporarily up the pin-count
 428                          * to 2, until cleanup_fb() is called.
 429                          */
 430                         return vmw_bo_pin_in_vram(dev_priv, vps->bo,
 431                                                       true);
 432                 }
 433
 434                 vmw_bo_unreference(&vps->bo);
 435                 vps->bo_size = 0;
 436         }
 437
 438         vps->bo = kzalloc(sizeof(*vps->bo), GFP_KERNEL);
 439         if (!vps->bo)
 440                 return -ENOMEM;
 441
 442         vmw_svga_enable(dev_priv);
 443
 444         /* After we have alloced the backing store might not be able to
 445          * resume the overlays, this is preferred to failing to alloc.
 446          */
 447         vmw_overlay_pause_all(dev_priv);
 448         ret = vmw_bo_init(dev_priv, vps->bo, size,
 449                               &vmw_vram_ne_placement,
 450                               false, &vmw_bo_bo_free);
 451         vmw_overlay_resume_all(dev_priv);
 452         if (ret) {
 453                 vps->bo = NULL; /* vmw_bo_init frees on error */
 454                 return ret;
 455         }
 456
 457         vps->bo_size = size;
 458
 459         /*
 460          * TTM already thinks the buffer is pinned, but make sure the
 461          * pin_count is upped.
 462          */
 463         return vmw_bo_pin_in_vram(dev_priv, vps->bo, true);
 464 }
 465
 466 static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update,
 467                                      uint32_t num_hits)
 468 {
 469         return sizeof(struct vmw_kms_sou_define_gmrfb) +
 470                 sizeof(struct vmw_kms_sou_bo_blit) * num_hits;
 471 }
 472
 473 static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update,
 474                                         void *cmd)
 475 {
 476         struct vmw_framebuffer_bo *vfbbo =
 477                 container_of(update->vfb, typeof(*vfbbo), base);
 478         struct vmw_kms_sou_define_gmrfb *gmr = cmd;
 479         int depth = update->vfb->base.format->depth;
 480
 481         /* Emulate RGBA support, contrary to svga_reg.h this is not
 482          * supported by hosts. This is only a problem if we are reading
 483          * this value later and expecting what we uploaded back.
 484          */
 485         if (depth == 32)
 486                 depth = 24;
 487
 488         gmr->header = SVGA_CMD_DEFINE_GMRFB;
 489
 490         gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8;
 491         gmr->body.format.colorDepth = depth;
 492         gmr->body.format.reserved = 0;
 493         gmr->body.bytesPerLine = update->vfb->base.pitches[0];
 494         vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &gmr->body.ptr);
 495
 496         return sizeof(*gmr);
 497 }
 498
 499 static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane  *update,
 500                                          void *cmd, struct drm_rect *clip,
 501                                          uint32_t fb_x, uint32_t fb_y)
 502 {
 503         struct vmw_kms_sou_bo_blit *blit = cmd;
 504
 505         blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
 506         blit->body.destScreenId = update->du->unit;
 507         blit->body.srcOrigin.x = fb_x;
 508         blit->body.srcOrigin.y = fb_y;
 509         blit->body.destRect.left = clip->x1;
 510         blit->body.destRect.top = clip->y1;
 511         blit->body.destRect.right = clip->x2;
 512         blit->body.destRect.bottom = clip->y2;
 513
 514         return sizeof(*blit);
 515 }
 516
 517 static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane  *update,
 518                                       void *cmd, struct drm_rect *bb)
 519 {
 520         return 0;
 521 }
 522
 523 /**
 524  * vmw_sou_plane_update_bo - Update display unit for bo backed fb.
 525  * @dev_priv: Device private.
 526  * @plane: Plane state.
 527  * @old_state: Old plane state.
 528  * @vfb: Framebuffer which is blitted to display unit.
 529  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
 530  *             The returned fence pointer may be NULL in which case the device
 531  *             has already synchronized.
 532  *
 533  * Return: 0 on success or a negative error code on failure.
 534  */
 535 static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv,
 536                                    struct drm_plane *plane,
 537                                    struct drm_plane_state *old_state,
 538                                    struct vmw_framebuffer *vfb,
 539                                    struct vmw_fence_obj **out_fence)
 540 {
 541         struct vmw_du_update_plane_buffer bo_update;
 542
 543         memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
 544         bo_update.base.plane = plane;
 545         bo_update.base.old_state = old_state;
 546         bo_update.base.dev_priv = dev_priv;
 547         bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
 548         bo_update.base.vfb = vfb;
 549         bo_update.base.out_fence = out_fence;
 550         bo_update.base.mutex = NULL;
 551         bo_update.base.cpu_blit = false;
 552         bo_update.base.intr = true;
 553
 554         bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size;
 555         bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb;
 556         bo_update.base.clip = vmw_sou_bo_populate_clip;
 557         bo_update.base.post_clip = vmw_stud_bo_post_clip;
 558
 559         return vmw_du_helper_plane_update(&bo_update.base);
 560 }
 561
 562 static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update,
 563                                           uint32_t num_hits)
 564 {
 565         return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) *
 566                 num_hits;
 567 }
 568
 569 static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update,
 570                                              void *cmd)
 571 {
 572         struct vmw_du_update_plane_surface *srf_update;
 573
 574         srf_update = container_of(update, typeof(*srf_update), base);
 575
 576         /*
 577          * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that
 578          * its bounding box is filled before iterating over all the clips. So
 579          * store the FIFO start address and revisit to fill the details.
 580          */
 581         srf_update->cmd_start = cmd;
 582
 583         return 0;
 584 }
 585
 586 static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update,
 587                                          void *cmd, uint32_t num_hits)
 588 {
 589         struct vmw_kms_sou_dirty_cmd *blit = cmd;
 590         struct vmw_framebuffer_surface *vfbs;
 591
 592         vfbs = container_of(update->vfb, typeof(*vfbs), base);
 593
 594         blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
 595         blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) *
 596                 num_hits;
 597
 598         blit->body.srcImage.sid = vfbs->surface->res.id;
 599         blit->body.destScreenId = update->du->unit;
 600
 601         /* Update the source and destination bounding box later in post_clip */
 602         blit->body.srcRect.left = 0;
 603         blit->body.srcRect.top = 0;
 604         blit->body.srcRect.right = 0;
 605         blit->body.srcRect.bottom = 0;
 606
 607         blit->body.destRect.left = 0;
 608         blit->body.destRect.top = 0;
 609         blit->body.destRect.right = 0;
 610         blit->body.destRect.bottom = 0;
 611
 612         return sizeof(*blit);
 613 }
 614
 615 static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update,
 616                                           void *cmd, struct drm_rect *clip,
 617                                           uint32_t src_x, uint32_t src_y)
 618 {
 619         SVGASignedRect *rect = cmd;
 620
 621         /*
 622          * rects are relative to dest bounding box rect on screen object, so
 623          * translate to it later in post_clip
 624          */
 625         rect->left = clip->x1;
 626         rect->top = clip->y1;
 627         rect->right = clip->x2;
 628         rect->bottom = clip->y2;
 629
 630         return sizeof(*rect);
 631 }
 632
 633 static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update,
 634                                           void *cmd, struct drm_rect *bb)
 635 {
 636         struct vmw_du_update_plane_surface *srf_update;
 637         struct drm_plane_state *state = update->plane->state;
 638         struct drm_rect src_bb;
 639         struct vmw_kms_sou_dirty_cmd *blit;
 640         SVGASignedRect *rect;
 641         uint32_t num_hits;
 642         int translate_src_x;
 643         int translate_src_y;
 644         int i;
 645
 646         srf_update = container_of(update, typeof(*srf_update), base);
 647
 648         blit = srf_update->cmd_start;
 649         rect = (SVGASignedRect *)&blit[1];
 650
 651         num_hits = (blit->header.size - sizeof(blit->body))/
 652                 sizeof(SVGASignedRect);
 653
 654         src_bb = *bb;
 655
 656         /* To translate bb back to fb src coord */
 657         translate_src_x = (state->src_x >> 16) - state->crtc_x;
 658         translate_src_y = (state->src_y >> 16) - state->crtc_y;
 659
 660         drm_rect_translate(&src_bb, translate_src_x, translate_src_y);
 661
 662         blit->body.srcRect.left = src_bb.x1;
 663         blit->body.srcRect.top = src_bb.y1;
 664         blit->body.srcRect.right = src_bb.x2;
 665         blit->body.srcRect.bottom = src_bb.y2;
 666
 667         blit->body.destRect.left = bb->x1;
 668         blit->body.destRect.top = bb->y1;
 669         blit->body.destRect.right = bb->x2;
 670         blit->body.destRect.bottom = bb->y2;
 671
 672         /* rects are relative to dest bb rect */
 673         for (i = 0; i < num_hits; i++) {
 674                 rect->left -= bb->x1;
 675                 rect->top -= bb->y1;
 676                 rect->right -= bb->x1;
 677                 rect->bottom -= bb->y1;
 678                 rect++;
 679         }
 680
 681         return 0;
 682 }
 683
 684 /**
 685  * vmw_sou_plane_update_surface - Update display unit for surface backed fb.
 686  * @dev_priv: Device private.
 687  * @plane: Plane state.
 688  * @old_state: Old plane state.
 689  * @vfb: Framebuffer which is blitted to display unit
 690  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
 691  *             The returned fence pointer may be NULL in which case the device
 692  *             has already synchronized.
 693  *
 694  * Return: 0 on success or a negative error code on failure.
 695  */
 696 static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv,
 697                                         struct drm_plane *plane,
 698                                         struct drm_plane_state *old_state,
 699                                         struct vmw_framebuffer *vfb,
 700                                         struct vmw_fence_obj **out_fence)
 701 {
 702         struct vmw_du_update_plane_surface srf_update;
 703
 704         memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface));
 705         srf_update.base.plane = plane;
 706         srf_update.base.old_state = old_state;
 707         srf_update.base.dev_priv = dev_priv;
 708         srf_update.base.du = vmw_crtc_to_du(plane->state->crtc);
 709         srf_update.base.vfb = vfb;
 710         srf_update.base.out_fence = out_fence;
 711         srf_update.base.mutex = &dev_priv->cmdbuf_mutex;
 712         srf_update.base.cpu_blit = false;
 713         srf_update.base.intr = true;
 714
 715         srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size;
 716         srf_update.base.post_prepare = vmw_sou_surface_post_prepare;
 717         srf_update.base.pre_clip = vmw_sou_surface_pre_clip;
 718         srf_update.base.clip = vmw_sou_surface_clip_rect;
 719         srf_update.base.post_clip = vmw_sou_surface_post_clip;
 720
 721         return vmw_du_helper_plane_update(&srf_update.base);
 722 }
 723
 724 static void
 725 vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
 726                                     struct drm_plane_state *old_state)
 727 {
 728         struct drm_crtc *crtc = plane->state->crtc;
 729         struct drm_pending_vblank_event *event = NULL;
 730         struct vmw_fence_obj *fence = NULL;
 731         int ret;
 732
 733         /* In case of device error, maintain consistent atomic state */
 734         if (crtc && plane->state->fb) {
 735                 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 736                 struct vmw_framebuffer *vfb =
 737                         vmw_framebuffer_to_vfb(plane->state->fb);
 738
 739                 if (vfb->bo)
 740                         ret = vmw_sou_plane_update_bo(dev_priv, plane,
 741                                                       old_state, vfb, &fence);
 742                 else
 743                         ret = vmw_sou_plane_update_surface(dev_priv, plane,
 744                                                            old_state, vfb,
 745                                                            &fence);
 746                 if (ret != 0)
 747                         DRM_ERROR("Failed to update screen.\n");
 748         } else {
 749                 /* Do nothing when fb and crtc is NULL (blank crtc) */
 750                 return;
 751         }
 752
 753         /* For error case vblank event is send from vmw_du_crtc_atomic_flush */
 754         event = crtc->state->event;
 755         if (event && fence) {
 756                 struct drm_file *file_priv = event->base.file_priv;
 757
 758                 ret = vmw_event_fence_action_queue(file_priv,
 759                                                    fence,
 760                                                    &event->base,
 761                                                    &event->event.vbl.tv_sec,
 762                                                    &event->event.vbl.tv_usec,
 763                                                    true);
 764
 765                 if (unlikely(ret != 0))
 766                         DRM_ERROR("Failed to queue event on fence.\n");
 767                 else
 768                         crtc->state->event = NULL;
 769         }
 770
 771         if (fence)
 772                 vmw_fence_obj_unreference(&fence);
 773 }
 774
 775
 776 static const struct drm_plane_funcs vmw_sou_plane_funcs = {
 777         .update_plane = drm_atomic_helper_update_plane,
 778         .disable_plane = drm_atomic_helper_disable_plane,
 779         .destroy = vmw_du_primary_plane_destroy,
 780         .reset = vmw_du_plane_reset,
 781         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
 782         .atomic_destroy_state = vmw_du_plane_destroy_state,
 783 };
 784
 785 static const struct drm_plane_funcs vmw_sou_cursor_funcs = {
 786         .update_plane = drm_atomic_helper_update_plane,
 787         .disable_plane = drm_atomic_helper_disable_plane,
 788         .destroy = vmw_du_cursor_plane_destroy,
 789         .reset = vmw_du_plane_reset,
 790         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
 791         .atomic_destroy_state = vmw_du_plane_destroy_state,
 792 };
 793
 794 /*
 795  * Atomic Helpers
 796  */
 797 static const struct
 798 drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = {
 799         .atomic_check = vmw_du_cursor_plane_atomic_check,
 800         .atomic_update = vmw_du_cursor_plane_atomic_update,
 801         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
 802         .cleanup_fb = vmw_du_plane_cleanup_fb,
 803 };
 804
 805 static const struct
 806 drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = {
 807         .atomic_check = vmw_du_primary_plane_atomic_check,
 808         .atomic_update = vmw_sou_primary_plane_atomic_update,
 809         .prepare_fb = vmw_sou_primary_plane_prepare_fb,
 810         .cleanup_fb = vmw_sou_primary_plane_cleanup_fb,
 811 };
 812
 813 static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = {
 814         .prepare = vmw_sou_crtc_helper_prepare,
 815         .mode_set_nofb = vmw_sou_crtc_mode_set_nofb,
 816         .atomic_check = vmw_du_crtc_atomic_check,
 817         .atomic_begin = vmw_du_crtc_atomic_begin,
 818         .atomic_flush = vmw_du_crtc_atomic_flush,
 819         .atomic_enable = vmw_sou_crtc_atomic_enable,
 820         .atomic_disable = vmw_sou_crtc_atomic_disable,
 821 };
 822
 823
 824 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
 825 {
 826         struct vmw_screen_object_unit *sou;
 827         struct drm_device *dev = dev_priv->dev;
 828         struct drm_connector *connector;
 829         struct drm_encoder *encoder;
 830         struct drm_plane *primary, *cursor;
 831         struct drm_crtc *crtc;
 832         int ret;
 833
 834         sou = kzalloc(sizeof(*sou), GFP_KERNEL);
 835         if (!sou)
 836                 return -ENOMEM;
 837
 838         sou->base.unit = unit;
 839         crtc = &sou->base.crtc;
 840         encoder = &sou->base.encoder;
 841         connector = &sou->base.connector;
 842         primary = &sou->base.primary;
 843         cursor = &sou->base.cursor;
 844
 845         sou->base.pref_active = (unit == 0);
 846         sou->base.pref_width = dev_priv->initial_width;
 847         sou->base.pref_height = dev_priv->initial_height;
 848         sou->base.pref_mode = NULL;
 849
 850         /*
 851          * Remove this after enabling atomic because property values can
 852          * only exist in a state object
 853          */
 854         sou->base.is_implicit = false;
 855
 856         /* Initialize primary plane */
 857         vmw_du_plane_reset(primary);
 858
 859         ret = drm_universal_plane_init(dev, &sou->base.primary,
 860                                        0, &vmw_sou_plane_funcs,
 861                                        vmw_primary_plane_formats,
 862                                        ARRAY_SIZE(vmw_primary_plane_formats),
 863                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
 864         if (ret) {
 865                 DRM_ERROR("Failed to initialize primary plane");
 866                 goto err_free;
 867         }
 868
 869         drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs);
 870         drm_plane_enable_fb_damage_clips(primary);
 871
 872         /* Initialize cursor plane */
 873         vmw_du_plane_reset(cursor);
 874
 875         ret = drm_universal_plane_init(dev, &sou->base.cursor,
 876                         0, &vmw_sou_cursor_funcs,
 877                         vmw_cursor_plane_formats,
 878                         ARRAY_SIZE(vmw_cursor_plane_formats),
 879                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
 880         if (ret) {
 881                 DRM_ERROR("Failed to initialize cursor plane");
 882                 drm_plane_cleanup(&sou->base.primary);
 883                 goto err_free;
 884         }
 885
 886         drm_plane_helper_add(cursor, &vmw_sou_cursor_plane_helper_funcs);
 887
 888         vmw_du_connector_reset(connector);
 889         ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
 890                                  DRM_MODE_CONNECTOR_VIRTUAL);
 891         if (ret) {
 892                 DRM_ERROR("Failed to initialize connector\n");
 893                 goto err_free;
 894         }
 895
 896         drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
 897         connector->status = vmw_du_connector_detect(connector, true);
 898
 899         ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
 900                                DRM_MODE_ENCODER_VIRTUAL, NULL);
 901         if (ret) {
 902                 DRM_ERROR("Failed to initialize encoder\n");
 903                 goto err_free_connector;
 904         }
 905
 906         (void) drm_connector_attach_encoder(connector, encoder);
 907         encoder->possible_crtcs = (1 << unit);
 908         encoder->possible_clones = 0;
 909
 910         ret = drm_connector_register(connector);
 911         if (ret) {
 912                 DRM_ERROR("Failed to register connector\n");
 913                 goto err_free_encoder;
 914         }
 915
 916
 917         vmw_du_crtc_reset(crtc);
 918         ret = drm_crtc_init_with_planes(dev, crtc, &sou->base.primary,
 919                                         &sou->base.cursor,
 920                                         &vmw_screen_object_crtc_funcs, NULL);
 921         if (ret) {
 922                 DRM_ERROR("Failed to initialize CRTC\n");
 923                 goto err_free_unregister;
 924         }
 925
 926         drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs);
 927
 928         drm_mode_crtc_set_gamma_size(crtc, 256);
 929
 930         drm_object_attach_property(&connector->base,
 931                                    dev_priv->hotplug_mode_update_property, 1);
 932         drm_object_attach_property(&connector->base,
 933                                    dev->mode_config.suggested_x_property, 0);
 934         drm_object_attach_property(&connector->base,
 935                                    dev->mode_config.suggested_y_property, 0);
 936         return 0;
 937
 938 err_free_unregister:
 939         drm_connector_unregister(connector);
 940 err_free_encoder:
 941         drm_encoder_cleanup(encoder);
 942 err_free_connector:
 943         drm_connector_cleanup(connector);
 944 err_free:
 945         kfree(sou);
 946         return ret;
 947 }
 948
 949 int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
 950 {
 951         struct drm_device *dev = dev_priv->dev;
 952         int i, ret;
 953
 954         if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
 955                 DRM_INFO("Not using screen objects,"
 956                          " missing cap SCREEN_OBJECT_2\n");
 957                 return -ENOSYS;
 958         }
 959
 960         ret = -ENOMEM;
 961
 962         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
 963         if (unlikely(ret != 0))
 964                 return ret;
 965
 966         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
 967                 vmw_sou_init(dev_priv, i);
 968
 969         dev_priv->active_display_unit = vmw_du_screen_object;
 970
 971         DRM_INFO("Screen Objects Display Unit initialized\n");
 972
 973         return 0;
 974 }
 975
 976 static int do_bo_define_gmrfb(struct vmw_private *dev_priv,
 977                                   struct vmw_framebuffer *framebuffer)
 978 {
 979         struct vmw_buffer_object *buf =
 980                 container_of(framebuffer, struct vmw_framebuffer_bo,
 981                              base)->buffer;
 982         int depth = framebuffer->base.format->depth;
 983         struct {
 984                 uint32_t header;
 985                 SVGAFifoCmdDefineGMRFB body;
 986         } *cmd;
 987
 988         /* Emulate RGBA support, contrary to svga_reg.h this is not
 989          * supported by hosts. This is only a problem if we are reading
 990          * this value later and expecting what we uploaded back.
 991          */
 992         if (depth == 32)
 993                 depth = 24;
 994
 995         cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
 996         if (!cmd)
 997                 return -ENOMEM;
 998
 999         cmd->header = SVGA_CMD_DEFINE_GMRFB;
1000         cmd->body.format.bitsPerPixel = framebuffer->base.format->cpp[0] * 8;
1001         cmd->body.format.colorDepth = depth;
1002         cmd->body.format.reserved = 0;
1003         cmd->body.bytesPerLine = framebuffer->base.pitches[0];
1004         /* Buffer is reserved in vram or GMR */
1005         vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr);
1006         vmw_fifo_commit(dev_priv, sizeof(*cmd));
1007
1008         return 0;
1009 }
1010
1011 /**
1012  * vmw_sou_surface_fifo_commit - Callback to fill in and submit a
1013  * blit surface to screen command.
1014  *
1015  * @dirty: The closure structure.
1016  *
1017  * Fills in the missing fields in the command, and translates the cliprects
1018  * to match the destination bounding box encoded.
1019  */
1020 static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty)
1021 {
1022         struct vmw_kms_sou_surface_dirty *sdirty =
1023                 container_of(dirty, typeof(*sdirty), base);
1024         struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
1025         s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x;
1026         s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y;
1027         size_t region_size = dirty->num_hits * sizeof(SVGASignedRect);
1028         SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
1029         int i;
1030
1031         if (!dirty->num_hits) {
1032                 vmw_fifo_commit(dirty->dev_priv, 0);
1033                 return;
1034         }
1035
1036         cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
1037         cmd->header.size = sizeof(cmd->body) + region_size;
1038
1039         /*
1040          * Use the destination bounding box to specify destination - and
1041          * source bounding regions.
1042          */
1043         cmd->body.destRect.left = sdirty->left;
1044         cmd->body.destRect.right = sdirty->right;
1045         cmd->body.destRect.top = sdirty->top;
1046         cmd->body.destRect.bottom = sdirty->bottom;
1047
1048         cmd->body.srcRect.left = sdirty->left + trans_x;
1049         cmd->body.srcRect.right = sdirty->right + trans_x;
1050         cmd->body.srcRect.top = sdirty->top + trans_y;
1051         cmd->body.srcRect.bottom = sdirty->bottom + trans_y;
1052
1053         cmd->body.srcImage.sid = sdirty->sid;
1054         cmd->body.destScreenId = dirty->unit->unit;
1055
1056         /* Blits are relative to the destination rect. Translate. */
1057         for (i = 0; i < dirty->num_hits; ++i, ++blit) {
1058                 blit->left -= sdirty->left;
1059                 blit->right -= sdirty->left;
1060                 blit->top -= sdirty->top;
1061                 blit->bottom -= sdirty->top;
1062         }
1063
1064         vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd));
1065
1066         sdirty->left = sdirty->top = S32_MAX;
1067         sdirty->right = sdirty->bottom = S32_MIN;
1068 }
1069
1070 /**
1071  * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect.
1072  *
1073  * @dirty: The closure structure
1074  *
1075  * Encodes a SVGASignedRect cliprect and updates the bounding box of the
1076  * BLIT_SURFACE_TO_SCREEN command.
1077  */
1078 static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty)
1079 {
1080         struct vmw_kms_sou_surface_dirty *sdirty =
1081                 container_of(dirty, typeof(*sdirty), base);
1082         struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
1083         SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
1084
1085         /* Destination rect. */
1086         blit += dirty->num_hits;
1087         blit->left = dirty->unit_x1;
1088         blit->top = dirty->unit_y1;
1089         blit->right = dirty->unit_x2;
1090         blit->bottom = dirty->unit_y2;
1091
1092         /* Destination bounding box */
1093         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
1094         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
1095         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
1096         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
1097
1098         dirty->num_hits++;
1099 }
1100
1101 /**
1102  * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer
1103  *
1104  * @dev_priv: Pointer to the device private structure.
1105  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
1106  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
1107  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
1108  * be NULL.
1109  * @srf: Pointer to surface to blit from. If NULL, the surface attached
1110  * to @framebuffer will be used.
1111  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
1112  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
1113  * @num_clips: Number of clip rects in @clips.
1114  * @inc: Increment to use when looping over @clips.
1115  * @out_fence: If non-NULL, will return a ref-counted pointer to a
1116  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
1117  * case the device has already synchronized.
1118  * @crtc: If crtc is passed, perform surface dirty on that crtc only.
1119  *
1120  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1121  * interrupted.
1122  */
1123 int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv,
1124                                  struct vmw_framebuffer *framebuffer,
1125                                  struct drm_clip_rect *clips,
1126                                  struct drm_vmw_rect *vclips,
1127                                  struct vmw_resource *srf,
1128                                  s32 dest_x,
1129                                  s32 dest_y,
1130                                  unsigned num_clips, int inc,
1131                                  struct vmw_fence_obj **out_fence,
1132                                  struct drm_crtc *crtc)
1133 {
1134         struct vmw_framebuffer_surface *vfbs =
1135                 container_of(framebuffer, typeof(*vfbs), base);
1136         struct vmw_kms_sou_surface_dirty sdirty;
1137         DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1138         int ret;
1139
1140         if (!srf)
1141                 srf = &vfbs->surface->res;
1142
1143         ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE,
1144                                           NULL, NULL);
1145         if (ret)
1146                 return ret;
1147
1148         ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
1149         if (ret)
1150                 goto out_unref;
1151
1152         sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
1153         sdirty.base.clip = vmw_sou_surface_clip;
1154         sdirty.base.dev_priv = dev_priv;
1155         sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) +
1156           sizeof(SVGASignedRect) * num_clips;
1157         sdirty.base.crtc = crtc;
1158
1159         sdirty.sid = srf->id;
1160         sdirty.left = sdirty.top = S32_MAX;
1161         sdirty.right = sdirty.bottom = S32_MIN;
1162         sdirty.dst_x = dest_x;
1163         sdirty.dst_y = dest_y;
1164
1165         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1166                                    dest_x, dest_y, num_clips, inc,
1167                                    &sdirty.base);
1168         vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
1169                                          NULL);
1170
1171         return ret;
1172
1173 out_unref:
1174         vmw_validation_unref_lists(&val_ctx);
1175         return ret;
1176 }
1177
1178 /**
1179  * vmw_sou_bo_fifo_commit - Callback to submit a set of readback clips.
1180  *
1181  * @dirty: The closure structure.
1182  *
1183  * Commits a previously built command buffer of readback clips.
1184  */
1185 static void vmw_sou_bo_fifo_commit(struct vmw_kms_dirty *dirty)
1186 {
1187         if (!dirty->num_hits) {
1188                 vmw_fifo_commit(dirty->dev_priv, 0);
1189                 return;
1190         }
1191
1192         vmw_fifo_commit(dirty->dev_priv,
1193                         sizeof(struct vmw_kms_sou_bo_blit) *
1194                         dirty->num_hits);
1195 }
1196
1197 /**
1198  * vmw_sou_bo_clip - Callback to encode a readback cliprect.
1199  *
1200  * @dirty: The closure structure
1201  *
1202  * Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
1203  */
1204 static void vmw_sou_bo_clip(struct vmw_kms_dirty *dirty)
1205 {
1206         struct vmw_kms_sou_bo_blit *blit = dirty->cmd;
1207
1208         blit += dirty->num_hits;
1209         blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
1210         blit->body.destScreenId = dirty->unit->unit;
1211         blit->body.srcOrigin.x = dirty->fb_x;
1212         blit->body.srcOrigin.y = dirty->fb_y;
1213         blit->body.destRect.left = dirty->unit_x1;
1214         blit->body.destRect.top = dirty->unit_y1;
1215         blit->body.destRect.right = dirty->unit_x2;
1216         blit->body.destRect.bottom = dirty->unit_y2;
1217         dirty->num_hits++;
1218 }
1219
1220 /**
1221  * vmw_kms_do_bo_dirty - Dirty part of a buffer-object backed framebuffer
1222  *
1223  * @dev_priv: Pointer to the device private structure.
1224  * @framebuffer: Pointer to the buffer-object backed framebuffer.
1225  * @clips: Array of clip rects.
1226  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
1227  * be NULL.
1228  * @num_clips: Number of clip rects in @clips.
1229  * @increment: Increment to use when looping over @clips.
1230  * @interruptible: Whether to perform waits interruptible if possible.
1231  * @out_fence: If non-NULL, will return a ref-counted pointer to a
1232  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
1233  * case the device has already synchronized.
1234  * @crtc: If crtc is passed, perform bo dirty on that crtc only.
1235  *
1236  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1237  * interrupted.
1238  */
1239 int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv,
1240                                 struct vmw_framebuffer *framebuffer,
1241                                 struct drm_clip_rect *clips,
1242                                 struct drm_vmw_rect *vclips,
1243                                 unsigned num_clips, int increment,
1244                                 bool interruptible,
1245                                 struct vmw_fence_obj **out_fence,
1246                                 struct drm_crtc *crtc)
1247 {
1248         struct vmw_buffer_object *buf =
1249                 container_of(framebuffer, struct vmw_framebuffer_bo,
1250                              base)->buffer;
1251         struct vmw_kms_dirty dirty;
1252         DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1253         int ret;
1254
1255         ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
1256         if (ret)
1257                 return ret;
1258
1259         ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
1260         if (ret)
1261                 goto out_unref;
1262
1263         ret = do_bo_define_gmrfb(dev_priv, framebuffer);
1264         if (unlikely(ret != 0))
1265                 goto out_revert;
1266
1267         dirty.crtc = crtc;
1268         dirty.fifo_commit = vmw_sou_bo_fifo_commit;
1269         dirty.clip = vmw_sou_bo_clip;
1270         dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) *
1271                 num_clips;
1272         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1273                                    0, 0, num_clips, increment, &dirty);
1274         vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
1275                                          NULL);
1276
1277         return ret;
1278
1279 out_revert:
1280         vmw_validation_revert(&val_ctx);
1281 out_unref:
1282         vmw_validation_unref_lists(&val_ctx);
1283
1284         return ret;
1285 }
1286
1287
1288 /**
1289  * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips.
1290  *
1291  * @dirty: The closure structure.
1292  *
1293  * Commits a previously built command buffer of readback clips.
1294  */
1295 static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty)
1296 {
1297         if (!dirty->num_hits) {
1298                 vmw_fifo_commit(dirty->dev_priv, 0);
1299                 return;
1300         }
1301
1302         vmw_fifo_commit(dirty->dev_priv,
1303                         sizeof(struct vmw_kms_sou_readback_blit) *
1304                         dirty->num_hits);
1305 }
1306
1307 /**
1308  * vmw_sou_readback_clip - Callback to encode a readback cliprect.
1309  *
1310  * @dirty: The closure structure
1311  *
1312  * Encodes a BLIT_SCREEN_TO_GMRFB cliprect.
1313  */
1314 static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty)
1315 {
1316         struct vmw_kms_sou_readback_blit *blit = dirty->cmd;
1317
1318         blit += dirty->num_hits;
1319         blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
1320         blit->body.srcScreenId = dirty->unit->unit;
1321         blit->body.destOrigin.x = dirty->fb_x;
1322         blit->body.destOrigin.y = dirty->fb_y;
1323         blit->body.srcRect.left = dirty->unit_x1;
1324         blit->body.srcRect.top = dirty->unit_y1;
1325         blit->body.srcRect.right = dirty->unit_x2;
1326         blit->body.srcRect.bottom = dirty->unit_y2;
1327         dirty->num_hits++;
1328 }
1329
1330 /**
1331  * vmw_kms_sou_readback - Perform a readback from the screen object system to
1332  * a buffer-object backed framebuffer.
1333  *
1334  * @dev_priv: Pointer to the device private structure.
1335  * @file_priv: Pointer to a struct drm_file identifying the caller.
1336  * Must be set to NULL if @user_fence_rep is NULL.
1337  * @vfb: Pointer to the buffer-object backed framebuffer.
1338  * @user_fence_rep: User-space provided structure for fence information.
1339  * Must be set to non-NULL if @file_priv is non-NULL.
1340  * @vclips: Array of clip rects.
1341  * @num_clips: Number of clip rects in @vclips.
1342  * @crtc: If crtc is passed, readback on that crtc only.
1343  *
1344  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1345  * interrupted.
1346  */
1347 int vmw_kms_sou_readback(struct vmw_private *dev_priv,
1348                          struct drm_file *file_priv,
1349                          struct vmw_framebuffer *vfb,
1350                          struct drm_vmw_fence_rep __user *user_fence_rep,
1351                          struct drm_vmw_rect *vclips,
1352                          uint32_t num_clips,
1353                          struct drm_crtc *crtc)
1354 {
1355         struct vmw_buffer_object *buf =
1356                 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
1357         struct vmw_kms_dirty dirty;
1358         DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1359         int ret;
1360
1361         ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
1362         if (ret)
1363                 return ret;
1364
1365         ret = vmw_validation_prepare(&val_ctx, NULL, true);
1366         if (ret)
1367                 goto out_unref;
1368
1369         ret = do_bo_define_gmrfb(dev_priv, vfb);
1370         if (unlikely(ret != 0))
1371                 goto out_revert;
1372
1373         dirty.crtc = crtc;
1374         dirty.fifo_commit = vmw_sou_readback_fifo_commit;
1375         dirty.clip = vmw_sou_readback_clip;
1376         dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
1377                 num_clips;
1378         ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
1379                                    0, 0, num_clips, 1, &dirty);
1380         vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
1381                                          user_fence_rep);
1382
1383         return ret;
1384
1385 out_revert:
1386         vmw_validation_revert(&val_ctx);
1387 out_unref:
1388         vmw_validation_unref_lists(&val_ctx);
1389
1390         return ret;
1391 }