1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /************************************************************************** 3 * 4 * Copyright 2011-2022 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 33 #include "vmwgfx_kms.h" 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_CMD_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_cmd_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_CMD_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_cmd_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 * @state: Unused 277 * 278 * This is called after a mode set has been completed. 279 */ 280 static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc, 281 struct drm_atomic_state *state) 282 { 283 } 284 285 /** 286 * vmw_sou_crtc_atomic_disable - Turns off CRTC 287 * 288 * @crtc: CRTC to be turned off 289 * @state: Unused 290 */ 291 static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc, 292 struct drm_atomic_state *state) 293 { 294 struct vmw_private *dev_priv; 295 struct vmw_screen_object_unit *sou; 296 int ret; 297 298 299 if (!crtc) { 300 DRM_ERROR("CRTC is NULL\n"); 301 return; 302 } 303 304 sou = vmw_crtc_to_sou(crtc); 305 dev_priv = vmw_priv(crtc->dev); 306 307 if (sou->defined) { 308 ret = vmw_sou_fifo_destroy(dev_priv, sou); 309 if (ret) 310 DRM_ERROR("Failed to destroy Screen Object\n"); 311 } 312 } 313 314 static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 315 .gamma_set = vmw_du_crtc_gamma_set, 316 .destroy = vmw_sou_crtc_destroy, 317 .reset = vmw_du_crtc_reset, 318 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 319 .atomic_destroy_state = vmw_du_crtc_destroy_state, 320 .set_config = drm_atomic_helper_set_config, 321 .page_flip = drm_atomic_helper_page_flip, 322 }; 323 324 /* 325 * Screen Object Display Unit encoder functions 326 */ 327 328 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 329 { 330 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 331 } 332 333 static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 334 .destroy = vmw_sou_encoder_destroy, 335 }; 336 337 /* 338 * Screen Object Display Unit connector functions 339 */ 340 341 static void vmw_sou_connector_destroy(struct drm_connector *connector) 342 { 343 vmw_sou_destroy(vmw_connector_to_sou(connector)); 344 } 345 346 static const struct drm_connector_funcs vmw_sou_connector_funcs = { 347 .dpms = vmw_du_connector_dpms, 348 .detect = vmw_du_connector_detect, 349 .fill_modes = vmw_du_connector_fill_modes, 350 .destroy = vmw_sou_connector_destroy, 351 .reset = vmw_du_connector_reset, 352 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 353 .atomic_destroy_state = vmw_du_connector_destroy_state, 354 }; 355 356 357 static const struct 358 drm_connector_helper_funcs vmw_sou_connector_helper_funcs = { 359 }; 360 361 362 363 /* 364 * Screen Object Display Plane Functions 365 */ 366 367 /** 368 * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer 369 * 370 * @plane: display plane 371 * @old_state: Contains the FB to clean up 372 * 373 * Unpins the display surface 374 * 375 * Returns 0 on success 376 */ 377 static void 378 vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane, 379 struct drm_plane_state *old_state) 380 { 381 struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state); 382 struct drm_crtc *crtc = plane->state->crtc ? 383 plane->state->crtc : old_state->crtc; 384 385 if (vps->bo) 386 vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false); 387 vmw_bo_unreference(&vps->bo); 388 vps->bo_size = 0; 389 390 vmw_du_plane_cleanup_fb(plane, old_state); 391 } 392 393 394 /** 395 * vmw_sou_primary_plane_prepare_fb - allocate backing buffer 396 * 397 * @plane: display plane 398 * @new_state: info on the new plane state, including the FB 399 * 400 * The SOU backing buffer is our equivalent of the display plane. 401 * 402 * Returns 0 on success 403 */ 404 static int 405 vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane, 406 struct drm_plane_state *new_state) 407 { 408 struct drm_framebuffer *new_fb = new_state->fb; 409 struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc; 410 struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state); 411 struct vmw_private *dev_priv; 412 size_t size; 413 int ret; 414 415 416 if (!new_fb) { 417 vmw_bo_unreference(&vps->bo); 418 vps->bo_size = 0; 419 420 return 0; 421 } 422 423 size = new_state->crtc_w * new_state->crtc_h * 4; 424 dev_priv = vmw_priv(crtc->dev); 425 426 if (vps->bo) { 427 if (vps->bo_size == size) { 428 /* 429 * Note that this might temporarily up the pin-count 430 * to 2, until cleanup_fb() is called. 431 */ 432 return vmw_bo_pin_in_vram(dev_priv, vps->bo, 433 true); 434 } 435 436 vmw_bo_unreference(&vps->bo); 437 vps->bo_size = 0; 438 } 439 440 vmw_svga_enable(dev_priv); 441 442 /* After we have alloced the backing store might not be able to 443 * resume the overlays, this is preferred to failing to alloc. 444 */ 445 vmw_overlay_pause_all(dev_priv); 446 ret = vmw_bo_create(dev_priv, size, 447 &vmw_vram_placement, 448 false, true, &vmw_bo_bo_free, &vps->bo); 449 vmw_overlay_resume_all(dev_priv); 450 if (ret) { 451 vps->bo = NULL; /* vmw_bo_init frees on error */ 452 return ret; 453 } 454 455 vps->bo_size = size; 456 457 /* 458 * TTM already thinks the buffer is pinned, but make sure the 459 * pin_count is upped. 460 */ 461 return vmw_bo_pin_in_vram(dev_priv, vps->bo, true); 462 } 463 464 static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update, 465 uint32_t num_hits) 466 { 467 return sizeof(struct vmw_kms_sou_define_gmrfb) + 468 sizeof(struct vmw_kms_sou_bo_blit) * num_hits; 469 } 470 471 static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update, 472 void *cmd) 473 { 474 struct vmw_framebuffer_bo *vfbbo = 475 container_of(update->vfb, typeof(*vfbbo), base); 476 struct vmw_kms_sou_define_gmrfb *gmr = cmd; 477 int depth = update->vfb->base.format->depth; 478 479 /* Emulate RGBA support, contrary to svga_reg.h this is not 480 * supported by hosts. This is only a problem if we are reading 481 * this value later and expecting what we uploaded back. 482 */ 483 if (depth == 32) 484 depth = 24; 485 486 gmr->header = SVGA_CMD_DEFINE_GMRFB; 487 488 gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8; 489 gmr->body.format.colorDepth = depth; 490 gmr->body.format.reserved = 0; 491 gmr->body.bytesPerLine = update->vfb->base.pitches[0]; 492 vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &gmr->body.ptr); 493 494 return sizeof(*gmr); 495 } 496 497 static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane *update, 498 void *cmd, struct drm_rect *clip, 499 uint32_t fb_x, uint32_t fb_y) 500 { 501 struct vmw_kms_sou_bo_blit *blit = cmd; 502 503 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 504 blit->body.destScreenId = update->du->unit; 505 blit->body.srcOrigin.x = fb_x; 506 blit->body.srcOrigin.y = fb_y; 507 blit->body.destRect.left = clip->x1; 508 blit->body.destRect.top = clip->y1; 509 blit->body.destRect.right = clip->x2; 510 blit->body.destRect.bottom = clip->y2; 511 512 return sizeof(*blit); 513 } 514 515 static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane *update, 516 void *cmd, struct drm_rect *bb) 517 { 518 return 0; 519 } 520 521 /** 522 * vmw_sou_plane_update_bo - Update display unit for bo backed fb. 523 * @dev_priv: Device private. 524 * @plane: Plane state. 525 * @old_state: Old plane state. 526 * @vfb: Framebuffer which is blitted to display unit. 527 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 528 * The returned fence pointer may be NULL in which case the device 529 * has already synchronized. 530 * 531 * Return: 0 on success or a negative error code on failure. 532 */ 533 static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv, 534 struct drm_plane *plane, 535 struct drm_plane_state *old_state, 536 struct vmw_framebuffer *vfb, 537 struct vmw_fence_obj **out_fence) 538 { 539 struct vmw_du_update_plane_buffer bo_update; 540 541 memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer)); 542 bo_update.base.plane = plane; 543 bo_update.base.old_state = old_state; 544 bo_update.base.dev_priv = dev_priv; 545 bo_update.base.du = vmw_crtc_to_du(plane->state->crtc); 546 bo_update.base.vfb = vfb; 547 bo_update.base.out_fence = out_fence; 548 bo_update.base.mutex = NULL; 549 bo_update.base.cpu_blit = false; 550 bo_update.base.intr = true; 551 552 bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size; 553 bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb; 554 bo_update.base.clip = vmw_sou_bo_populate_clip; 555 bo_update.base.post_clip = vmw_stud_bo_post_clip; 556 557 return vmw_du_helper_plane_update(&bo_update.base); 558 } 559 560 static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update, 561 uint32_t num_hits) 562 { 563 return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) * 564 num_hits; 565 } 566 567 static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update, 568 void *cmd) 569 { 570 struct vmw_du_update_plane_surface *srf_update; 571 572 srf_update = container_of(update, typeof(*srf_update), base); 573 574 /* 575 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that 576 * its bounding box is filled before iterating over all the clips. So 577 * store the FIFO start address and revisit to fill the details. 578 */ 579 srf_update->cmd_start = cmd; 580 581 return 0; 582 } 583 584 static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update, 585 void *cmd, uint32_t num_hits) 586 { 587 struct vmw_kms_sou_dirty_cmd *blit = cmd; 588 struct vmw_framebuffer_surface *vfbs; 589 590 vfbs = container_of(update->vfb, typeof(*vfbs), base); 591 592 blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 593 blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) * 594 num_hits; 595 596 blit->body.srcImage.sid = vfbs->surface->res.id; 597 blit->body.destScreenId = update->du->unit; 598 599 /* Update the source and destination bounding box later in post_clip */ 600 blit->body.srcRect.left = 0; 601 blit->body.srcRect.top = 0; 602 blit->body.srcRect.right = 0; 603 blit->body.srcRect.bottom = 0; 604 605 blit->body.destRect.left = 0; 606 blit->body.destRect.top = 0; 607 blit->body.destRect.right = 0; 608 blit->body.destRect.bottom = 0; 609 610 return sizeof(*blit); 611 } 612 613 static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update, 614 void *cmd, struct drm_rect *clip, 615 uint32_t src_x, uint32_t src_y) 616 { 617 SVGASignedRect *rect = cmd; 618 619 /* 620 * rects are relative to dest bounding box rect on screen object, so 621 * translate to it later in post_clip 622 */ 623 rect->left = clip->x1; 624 rect->top = clip->y1; 625 rect->right = clip->x2; 626 rect->bottom = clip->y2; 627 628 return sizeof(*rect); 629 } 630 631 static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update, 632 void *cmd, struct drm_rect *bb) 633 { 634 struct vmw_du_update_plane_surface *srf_update; 635 struct drm_plane_state *state = update->plane->state; 636 struct drm_rect src_bb; 637 struct vmw_kms_sou_dirty_cmd *blit; 638 SVGASignedRect *rect; 639 uint32_t num_hits; 640 int translate_src_x; 641 int translate_src_y; 642 int i; 643 644 srf_update = container_of(update, typeof(*srf_update), base); 645 646 blit = srf_update->cmd_start; 647 rect = (SVGASignedRect *)&blit[1]; 648 649 num_hits = (blit->header.size - sizeof(blit->body))/ 650 sizeof(SVGASignedRect); 651 652 src_bb = *bb; 653 654 /* To translate bb back to fb src coord */ 655 translate_src_x = (state->src_x >> 16) - state->crtc_x; 656 translate_src_y = (state->src_y >> 16) - state->crtc_y; 657 658 drm_rect_translate(&src_bb, translate_src_x, translate_src_y); 659 660 blit->body.srcRect.left = src_bb.x1; 661 blit->body.srcRect.top = src_bb.y1; 662 blit->body.srcRect.right = src_bb.x2; 663 blit->body.srcRect.bottom = src_bb.y2; 664 665 blit->body.destRect.left = bb->x1; 666 blit->body.destRect.top = bb->y1; 667 blit->body.destRect.right = bb->x2; 668 blit->body.destRect.bottom = bb->y2; 669 670 /* rects are relative to dest bb rect */ 671 for (i = 0; i < num_hits; i++) { 672 rect->left -= bb->x1; 673 rect->top -= bb->y1; 674 rect->right -= bb->x1; 675 rect->bottom -= bb->y1; 676 rect++; 677 } 678 679 return 0; 680 } 681 682 /** 683 * vmw_sou_plane_update_surface - Update display unit for surface backed fb. 684 * @dev_priv: Device private. 685 * @plane: Plane state. 686 * @old_state: Old plane state. 687 * @vfb: Framebuffer which is blitted to display unit 688 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 689 * The returned fence pointer may be NULL in which case the device 690 * has already synchronized. 691 * 692 * Return: 0 on success or a negative error code on failure. 693 */ 694 static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv, 695 struct drm_plane *plane, 696 struct drm_plane_state *old_state, 697 struct vmw_framebuffer *vfb, 698 struct vmw_fence_obj **out_fence) 699 { 700 struct vmw_du_update_plane_surface srf_update; 701 702 memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface)); 703 srf_update.base.plane = plane; 704 srf_update.base.old_state = old_state; 705 srf_update.base.dev_priv = dev_priv; 706 srf_update.base.du = vmw_crtc_to_du(plane->state->crtc); 707 srf_update.base.vfb = vfb; 708 srf_update.base.out_fence = out_fence; 709 srf_update.base.mutex = &dev_priv->cmdbuf_mutex; 710 srf_update.base.cpu_blit = false; 711 srf_update.base.intr = true; 712 713 srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size; 714 srf_update.base.post_prepare = vmw_sou_surface_post_prepare; 715 srf_update.base.pre_clip = vmw_sou_surface_pre_clip; 716 srf_update.base.clip = vmw_sou_surface_clip_rect; 717 srf_update.base.post_clip = vmw_sou_surface_post_clip; 718 719 return vmw_du_helper_plane_update(&srf_update.base); 720 } 721 722 static void 723 vmw_sou_primary_plane_atomic_update(struct drm_plane *plane, 724 struct drm_atomic_state *state) 725 { 726 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); 727 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); 728 struct drm_crtc *crtc = new_state->crtc; 729 struct vmw_fence_obj *fence = NULL; 730 int ret; 731 732 /* In case of device error, maintain consistent atomic state */ 733 if (crtc && new_state->fb) { 734 struct vmw_private *dev_priv = vmw_priv(crtc->dev); 735 struct vmw_framebuffer *vfb = 736 vmw_framebuffer_to_vfb(new_state->fb); 737 738 if (vfb->bo) 739 ret = vmw_sou_plane_update_bo(dev_priv, plane, 740 old_state, vfb, &fence); 741 else 742 ret = vmw_sou_plane_update_surface(dev_priv, plane, 743 old_state, vfb, 744 &fence); 745 if (ret != 0) 746 DRM_ERROR("Failed to update screen.\n"); 747 } else { 748 /* Do nothing when fb and crtc is NULL (blank crtc) */ 749 return; 750 } 751 752 if (fence) 753 vmw_fence_obj_unreference(&fence); 754 } 755 756 757 static const struct drm_plane_funcs vmw_sou_plane_funcs = { 758 .update_plane = drm_atomic_helper_update_plane, 759 .disable_plane = drm_atomic_helper_disable_plane, 760 .destroy = vmw_du_primary_plane_destroy, 761 .reset = vmw_du_plane_reset, 762 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 763 .atomic_destroy_state = vmw_du_plane_destroy_state, 764 }; 765 766 static const struct drm_plane_funcs vmw_sou_cursor_funcs = { 767 .update_plane = drm_atomic_helper_update_plane, 768 .disable_plane = drm_atomic_helper_disable_plane, 769 .destroy = vmw_du_cursor_plane_destroy, 770 .reset = vmw_du_plane_reset, 771 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 772 .atomic_destroy_state = vmw_du_plane_destroy_state, 773 }; 774 775 /* 776 * Atomic Helpers 777 */ 778 static const struct 779 drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = { 780 .atomic_check = vmw_du_cursor_plane_atomic_check, 781 .atomic_update = vmw_du_cursor_plane_atomic_update, 782 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 783 .cleanup_fb = vmw_du_cursor_plane_cleanup_fb, 784 }; 785 786 static const struct 787 drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = { 788 .atomic_check = vmw_du_primary_plane_atomic_check, 789 .atomic_update = vmw_sou_primary_plane_atomic_update, 790 .prepare_fb = vmw_sou_primary_plane_prepare_fb, 791 .cleanup_fb = vmw_sou_primary_plane_cleanup_fb, 792 }; 793 794 static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = { 795 .prepare = vmw_sou_crtc_helper_prepare, 796 .mode_set_nofb = vmw_sou_crtc_mode_set_nofb, 797 .atomic_check = vmw_du_crtc_atomic_check, 798 .atomic_begin = vmw_du_crtc_atomic_begin, 799 .atomic_flush = vmw_du_crtc_atomic_flush, 800 .atomic_enable = vmw_sou_crtc_atomic_enable, 801 .atomic_disable = vmw_sou_crtc_atomic_disable, 802 }; 803 804 805 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 806 { 807 struct vmw_screen_object_unit *sou; 808 struct drm_device *dev = &dev_priv->drm; 809 struct drm_connector *connector; 810 struct drm_encoder *encoder; 811 struct drm_plane *primary; 812 struct vmw_cursor_plane *cursor; 813 struct drm_crtc *crtc; 814 int ret; 815 816 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 817 if (!sou) 818 return -ENOMEM; 819 820 sou->base.unit = unit; 821 crtc = &sou->base.crtc; 822 encoder = &sou->base.encoder; 823 connector = &sou->base.connector; 824 primary = &sou->base.primary; 825 cursor = &sou->base.cursor; 826 827 sou->base.pref_active = (unit == 0); 828 sou->base.pref_width = dev_priv->initial_width; 829 sou->base.pref_height = dev_priv->initial_height; 830 sou->base.pref_mode = NULL; 831 832 /* 833 * Remove this after enabling atomic because property values can 834 * only exist in a state object 835 */ 836 sou->base.is_implicit = false; 837 838 /* Initialize primary plane */ 839 ret = drm_universal_plane_init(dev, primary, 840 0, &vmw_sou_plane_funcs, 841 vmw_primary_plane_formats, 842 ARRAY_SIZE(vmw_primary_plane_formats), 843 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 844 if (ret) { 845 DRM_ERROR("Failed to initialize primary plane"); 846 goto err_free; 847 } 848 849 drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs); 850 drm_plane_enable_fb_damage_clips(primary); 851 852 /* Initialize cursor plane */ 853 ret = drm_universal_plane_init(dev, &cursor->base, 854 0, &vmw_sou_cursor_funcs, 855 vmw_cursor_plane_formats, 856 ARRAY_SIZE(vmw_cursor_plane_formats), 857 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 858 if (ret) { 859 DRM_ERROR("Failed to initialize cursor plane"); 860 drm_plane_cleanup(&sou->base.primary); 861 goto err_free; 862 } 863 864 drm_plane_helper_add(&cursor->base, &vmw_sou_cursor_plane_helper_funcs); 865 866 ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs, 867 DRM_MODE_CONNECTOR_VIRTUAL); 868 if (ret) { 869 DRM_ERROR("Failed to initialize connector\n"); 870 goto err_free; 871 } 872 873 drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs); 874 connector->status = vmw_du_connector_detect(connector, true); 875 876 ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, 877 DRM_MODE_ENCODER_VIRTUAL, NULL); 878 if (ret) { 879 DRM_ERROR("Failed to initialize encoder\n"); 880 goto err_free_connector; 881 } 882 883 (void) drm_connector_attach_encoder(connector, encoder); 884 encoder->possible_crtcs = (1 << unit); 885 encoder->possible_clones = 0; 886 887 ret = drm_connector_register(connector); 888 if (ret) { 889 DRM_ERROR("Failed to register connector\n"); 890 goto err_free_encoder; 891 } 892 893 ret = drm_crtc_init_with_planes(dev, crtc, primary, 894 &cursor->base, 895 &vmw_screen_object_crtc_funcs, NULL); 896 if (ret) { 897 DRM_ERROR("Failed to initialize CRTC\n"); 898 goto err_free_unregister; 899 } 900 901 drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs); 902 903 drm_mode_crtc_set_gamma_size(crtc, 256); 904 905 drm_object_attach_property(&connector->base, 906 dev_priv->hotplug_mode_update_property, 1); 907 drm_object_attach_property(&connector->base, 908 dev->mode_config.suggested_x_property, 0); 909 drm_object_attach_property(&connector->base, 910 dev->mode_config.suggested_y_property, 0); 911 return 0; 912 913 err_free_unregister: 914 drm_connector_unregister(connector); 915 err_free_encoder: 916 drm_encoder_cleanup(encoder); 917 err_free_connector: 918 drm_connector_cleanup(connector); 919 err_free: 920 kfree(sou); 921 return ret; 922 } 923 924 int vmw_kms_sou_init_display(struct vmw_private *dev_priv) 925 { 926 struct drm_device *dev = &dev_priv->drm; 927 int i; 928 929 /* Screen objects won't work if GMR's aren't available */ 930 if (!dev_priv->has_gmr) 931 return -ENOSYS; 932 933 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { 934 return -ENOSYS; 935 } 936 937 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 938 vmw_sou_init(dev_priv, i); 939 940 dev_priv->active_display_unit = vmw_du_screen_object; 941 942 drm_mode_config_reset(dev); 943 944 return 0; 945 } 946 947 static int do_bo_define_gmrfb(struct vmw_private *dev_priv, 948 struct vmw_framebuffer *framebuffer) 949 { 950 struct vmw_buffer_object *buf = 951 container_of(framebuffer, struct vmw_framebuffer_bo, 952 base)->buffer; 953 int depth = framebuffer->base.format->depth; 954 struct { 955 uint32_t header; 956 SVGAFifoCmdDefineGMRFB body; 957 } *cmd; 958 959 /* Emulate RGBA support, contrary to svga_reg.h this is not 960 * supported by hosts. This is only a problem if we are reading 961 * this value later and expecting what we uploaded back. 962 */ 963 if (depth == 32) 964 depth = 24; 965 966 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); 967 if (!cmd) 968 return -ENOMEM; 969 970 cmd->header = SVGA_CMD_DEFINE_GMRFB; 971 cmd->body.format.bitsPerPixel = framebuffer->base.format->cpp[0] * 8; 972 cmd->body.format.colorDepth = depth; 973 cmd->body.format.reserved = 0; 974 cmd->body.bytesPerLine = framebuffer->base.pitches[0]; 975 /* Buffer is reserved in vram or GMR */ 976 vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr); 977 vmw_cmd_commit(dev_priv, sizeof(*cmd)); 978 979 return 0; 980 } 981 982 /** 983 * vmw_sou_surface_fifo_commit - Callback to fill in and submit a 984 * blit surface to screen command. 985 * 986 * @dirty: The closure structure. 987 * 988 * Fills in the missing fields in the command, and translates the cliprects 989 * to match the destination bounding box encoded. 990 */ 991 static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty) 992 { 993 struct vmw_kms_sou_surface_dirty *sdirty = 994 container_of(dirty, typeof(*sdirty), base); 995 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 996 s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x; 997 s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y; 998 size_t region_size = dirty->num_hits * sizeof(SVGASignedRect); 999 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 1000 int i; 1001 1002 if (!dirty->num_hits) { 1003 vmw_cmd_commit(dirty->dev_priv, 0); 1004 return; 1005 } 1006 1007 cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 1008 cmd->header.size = sizeof(cmd->body) + region_size; 1009 1010 /* 1011 * Use the destination bounding box to specify destination - and 1012 * source bounding regions. 1013 */ 1014 cmd->body.destRect.left = sdirty->left; 1015 cmd->body.destRect.right = sdirty->right; 1016 cmd->body.destRect.top = sdirty->top; 1017 cmd->body.destRect.bottom = sdirty->bottom; 1018 1019 cmd->body.srcRect.left = sdirty->left + trans_x; 1020 cmd->body.srcRect.right = sdirty->right + trans_x; 1021 cmd->body.srcRect.top = sdirty->top + trans_y; 1022 cmd->body.srcRect.bottom = sdirty->bottom + trans_y; 1023 1024 cmd->body.srcImage.sid = sdirty->sid; 1025 cmd->body.destScreenId = dirty->unit->unit; 1026 1027 /* Blits are relative to the destination rect. Translate. */ 1028 for (i = 0; i < dirty->num_hits; ++i, ++blit) { 1029 blit->left -= sdirty->left; 1030 blit->right -= sdirty->left; 1031 blit->top -= sdirty->top; 1032 blit->bottom -= sdirty->top; 1033 } 1034 1035 vmw_cmd_commit(dirty->dev_priv, region_size + sizeof(*cmd)); 1036 1037 sdirty->left = sdirty->top = S32_MAX; 1038 sdirty->right = sdirty->bottom = S32_MIN; 1039 } 1040 1041 /** 1042 * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect. 1043 * 1044 * @dirty: The closure structure 1045 * 1046 * Encodes a SVGASignedRect cliprect and updates the bounding box of the 1047 * BLIT_SURFACE_TO_SCREEN command. 1048 */ 1049 static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty) 1050 { 1051 struct vmw_kms_sou_surface_dirty *sdirty = 1052 container_of(dirty, typeof(*sdirty), base); 1053 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 1054 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 1055 1056 /* Destination rect. */ 1057 blit += dirty->num_hits; 1058 blit->left = dirty->unit_x1; 1059 blit->top = dirty->unit_y1; 1060 blit->right = dirty->unit_x2; 1061 blit->bottom = dirty->unit_y2; 1062 1063 /* Destination bounding box */ 1064 sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1); 1065 sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1); 1066 sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2); 1067 sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2); 1068 1069 dirty->num_hits++; 1070 } 1071 1072 /** 1073 * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer 1074 * 1075 * @dev_priv: Pointer to the device private structure. 1076 * @framebuffer: Pointer to the surface-buffer backed framebuffer. 1077 * @clips: Array of clip rects. Either @clips or @vclips must be NULL. 1078 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 1079 * be NULL. 1080 * @srf: Pointer to surface to blit from. If NULL, the surface attached 1081 * to @framebuffer will be used. 1082 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates. 1083 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates. 1084 * @num_clips: Number of clip rects in @clips. 1085 * @inc: Increment to use when looping over @clips. 1086 * @out_fence: If non-NULL, will return a ref-counted pointer to a 1087 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 1088 * case the device has already synchronized. 1089 * @crtc: If crtc is passed, perform surface dirty on that crtc only. 1090 * 1091 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1092 * interrupted. 1093 */ 1094 int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv, 1095 struct vmw_framebuffer *framebuffer, 1096 struct drm_clip_rect *clips, 1097 struct drm_vmw_rect *vclips, 1098 struct vmw_resource *srf, 1099 s32 dest_x, 1100 s32 dest_y, 1101 unsigned num_clips, int inc, 1102 struct vmw_fence_obj **out_fence, 1103 struct drm_crtc *crtc) 1104 { 1105 struct vmw_framebuffer_surface *vfbs = 1106 container_of(framebuffer, typeof(*vfbs), base); 1107 struct vmw_kms_sou_surface_dirty sdirty; 1108 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1109 int ret; 1110 1111 if (!srf) 1112 srf = &vfbs->surface->res; 1113 1114 ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE, 1115 NULL, NULL); 1116 if (ret) 1117 return ret; 1118 1119 ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true); 1120 if (ret) 1121 goto out_unref; 1122 1123 sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit; 1124 sdirty.base.clip = vmw_sou_surface_clip; 1125 sdirty.base.dev_priv = dev_priv; 1126 sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) + 1127 sizeof(SVGASignedRect) * num_clips; 1128 sdirty.base.crtc = crtc; 1129 1130 sdirty.sid = srf->id; 1131 sdirty.left = sdirty.top = S32_MAX; 1132 sdirty.right = sdirty.bottom = S32_MIN; 1133 sdirty.dst_x = dest_x; 1134 sdirty.dst_y = dest_y; 1135 1136 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1137 dest_x, dest_y, num_clips, inc, 1138 &sdirty.base); 1139 vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence, 1140 NULL); 1141 1142 return ret; 1143 1144 out_unref: 1145 vmw_validation_unref_lists(&val_ctx); 1146 return ret; 1147 } 1148 1149 /** 1150 * vmw_sou_bo_fifo_commit - Callback to submit a set of readback clips. 1151 * 1152 * @dirty: The closure structure. 1153 * 1154 * Commits a previously built command buffer of readback clips. 1155 */ 1156 static void vmw_sou_bo_fifo_commit(struct vmw_kms_dirty *dirty) 1157 { 1158 if (!dirty->num_hits) { 1159 vmw_cmd_commit(dirty->dev_priv, 0); 1160 return; 1161 } 1162 1163 vmw_cmd_commit(dirty->dev_priv, 1164 sizeof(struct vmw_kms_sou_bo_blit) * 1165 dirty->num_hits); 1166 } 1167 1168 /** 1169 * vmw_sou_bo_clip - Callback to encode a readback cliprect. 1170 * 1171 * @dirty: The closure structure 1172 * 1173 * Encodes a BLIT_GMRFB_TO_SCREEN cliprect. 1174 */ 1175 static void vmw_sou_bo_clip(struct vmw_kms_dirty *dirty) 1176 { 1177 struct vmw_kms_sou_bo_blit *blit = dirty->cmd; 1178 1179 blit += dirty->num_hits; 1180 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 1181 blit->body.destScreenId = dirty->unit->unit; 1182 blit->body.srcOrigin.x = dirty->fb_x; 1183 blit->body.srcOrigin.y = dirty->fb_y; 1184 blit->body.destRect.left = dirty->unit_x1; 1185 blit->body.destRect.top = dirty->unit_y1; 1186 blit->body.destRect.right = dirty->unit_x2; 1187 blit->body.destRect.bottom = dirty->unit_y2; 1188 dirty->num_hits++; 1189 } 1190 1191 /** 1192 * vmw_kms_sou_do_bo_dirty - Dirty part of a buffer-object backed framebuffer 1193 * 1194 * @dev_priv: Pointer to the device private structure. 1195 * @framebuffer: Pointer to the buffer-object backed framebuffer. 1196 * @clips: Array of clip rects. 1197 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 1198 * be NULL. 1199 * @num_clips: Number of clip rects in @clips. 1200 * @increment: Increment to use when looping over @clips. 1201 * @interruptible: Whether to perform waits interruptible if possible. 1202 * @out_fence: If non-NULL, will return a ref-counted pointer to a 1203 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 1204 * case the device has already synchronized. 1205 * @crtc: If crtc is passed, perform bo dirty on that crtc only. 1206 * 1207 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1208 * interrupted. 1209 */ 1210 int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv, 1211 struct vmw_framebuffer *framebuffer, 1212 struct drm_clip_rect *clips, 1213 struct drm_vmw_rect *vclips, 1214 unsigned num_clips, int increment, 1215 bool interruptible, 1216 struct vmw_fence_obj **out_fence, 1217 struct drm_crtc *crtc) 1218 { 1219 struct vmw_buffer_object *buf = 1220 container_of(framebuffer, struct vmw_framebuffer_bo, 1221 base)->buffer; 1222 struct vmw_kms_dirty dirty; 1223 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1224 int ret; 1225 1226 ret = vmw_validation_add_bo(&val_ctx, buf, false, false); 1227 if (ret) 1228 return ret; 1229 1230 ret = vmw_validation_prepare(&val_ctx, NULL, interruptible); 1231 if (ret) 1232 goto out_unref; 1233 1234 ret = do_bo_define_gmrfb(dev_priv, framebuffer); 1235 if (unlikely(ret != 0)) 1236 goto out_revert; 1237 1238 dirty.crtc = crtc; 1239 dirty.fifo_commit = vmw_sou_bo_fifo_commit; 1240 dirty.clip = vmw_sou_bo_clip; 1241 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) * 1242 num_clips; 1243 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1244 0, 0, num_clips, increment, &dirty); 1245 vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence, 1246 NULL); 1247 1248 return ret; 1249 1250 out_revert: 1251 vmw_validation_revert(&val_ctx); 1252 out_unref: 1253 vmw_validation_unref_lists(&val_ctx); 1254 1255 return ret; 1256 } 1257 1258 1259 /** 1260 * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips. 1261 * 1262 * @dirty: The closure structure. 1263 * 1264 * Commits a previously built command buffer of readback clips. 1265 */ 1266 static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty) 1267 { 1268 if (!dirty->num_hits) { 1269 vmw_cmd_commit(dirty->dev_priv, 0); 1270 return; 1271 } 1272 1273 vmw_cmd_commit(dirty->dev_priv, 1274 sizeof(struct vmw_kms_sou_readback_blit) * 1275 dirty->num_hits); 1276 } 1277 1278 /** 1279 * vmw_sou_readback_clip - Callback to encode a readback cliprect. 1280 * 1281 * @dirty: The closure structure 1282 * 1283 * Encodes a BLIT_SCREEN_TO_GMRFB cliprect. 1284 */ 1285 static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty) 1286 { 1287 struct vmw_kms_sou_readback_blit *blit = dirty->cmd; 1288 1289 blit += dirty->num_hits; 1290 blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB; 1291 blit->body.srcScreenId = dirty->unit->unit; 1292 blit->body.destOrigin.x = dirty->fb_x; 1293 blit->body.destOrigin.y = dirty->fb_y; 1294 blit->body.srcRect.left = dirty->unit_x1; 1295 blit->body.srcRect.top = dirty->unit_y1; 1296 blit->body.srcRect.right = dirty->unit_x2; 1297 blit->body.srcRect.bottom = dirty->unit_y2; 1298 dirty->num_hits++; 1299 } 1300 1301 /** 1302 * vmw_kms_sou_readback - Perform a readback from the screen object system to 1303 * a buffer-object backed framebuffer. 1304 * 1305 * @dev_priv: Pointer to the device private structure. 1306 * @file_priv: Pointer to a struct drm_file identifying the caller. 1307 * Must be set to NULL if @user_fence_rep is NULL. 1308 * @vfb: Pointer to the buffer-object backed framebuffer. 1309 * @user_fence_rep: User-space provided structure for fence information. 1310 * Must be set to non-NULL if @file_priv is non-NULL. 1311 * @vclips: Array of clip rects. 1312 * @num_clips: Number of clip rects in @vclips. 1313 * @crtc: If crtc is passed, readback on that crtc only. 1314 * 1315 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1316 * interrupted. 1317 */ 1318 int vmw_kms_sou_readback(struct vmw_private *dev_priv, 1319 struct drm_file *file_priv, 1320 struct vmw_framebuffer *vfb, 1321 struct drm_vmw_fence_rep __user *user_fence_rep, 1322 struct drm_vmw_rect *vclips, 1323 uint32_t num_clips, 1324 struct drm_crtc *crtc) 1325 { 1326 struct vmw_buffer_object *buf = 1327 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer; 1328 struct vmw_kms_dirty dirty; 1329 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1330 int ret; 1331 1332 ret = vmw_validation_add_bo(&val_ctx, buf, false, false); 1333 if (ret) 1334 return ret; 1335 1336 ret = vmw_validation_prepare(&val_ctx, NULL, true); 1337 if (ret) 1338 goto out_unref; 1339 1340 ret = do_bo_define_gmrfb(dev_priv, vfb); 1341 if (unlikely(ret != 0)) 1342 goto out_revert; 1343 1344 dirty.crtc = crtc; 1345 dirty.fifo_commit = vmw_sou_readback_fifo_commit; 1346 dirty.clip = vmw_sou_readback_clip; 1347 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) * 1348 num_clips; 1349 ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips, 1350 0, 0, num_clips, 1, &dirty); 1351 vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL, 1352 user_fence_rep); 1353 1354 return ret; 1355 1356 out_revert: 1357 vmw_validation_revert(&val_ctx); 1358 out_unref: 1359 vmw_validation_unref_lists(&val_ctx); 1360 1361 return ret; 1362 } 1363