1 /****************************************************************************** 2 * 3 * COPYRIGHT © 2014-2015 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 ******************************************************************************/ 27 28 #include "vmwgfx_kms.h" 29 #include "device_include/svga3d_surfacedefs.h" 30 #include <drm/drm_plane_helper.h> 31 32 #define vmw_crtc_to_stdu(x) \ 33 container_of(x, struct vmw_screen_target_display_unit, base.crtc) 34 #define vmw_encoder_to_stdu(x) \ 35 container_of(x, struct vmw_screen_target_display_unit, base.encoder) 36 #define vmw_connector_to_stdu(x) \ 37 container_of(x, struct vmw_screen_target_display_unit, base.connector) 38 39 40 41 enum stdu_content_type { 42 SAME_AS_DISPLAY = 0, 43 SEPARATE_SURFACE, 44 SEPARATE_DMA 45 }; 46 47 /** 48 * struct vmw_stdu_dirty - closure structure for the update functions 49 * 50 * @base: The base type we derive from. Used by vmw_kms_helper_dirty(). 51 * @transfer: Transfer direction for DMA command. 52 * @left: Left side of bounding box. 53 * @right: Right side of bounding box. 54 * @top: Top side of bounding box. 55 * @bottom: Bottom side of bounding box. 56 * @buf: DMA buffer when DMA-ing between buffer and screen targets. 57 * @sid: Surface ID when copying between surface and screen targets. 58 */ 59 struct vmw_stdu_dirty { 60 struct vmw_kms_dirty base; 61 SVGA3dTransferType transfer; 62 s32 left, right, top, bottom; 63 u32 pitch; 64 union { 65 struct vmw_dma_buffer *buf; 66 u32 sid; 67 }; 68 }; 69 70 /* 71 * SVGA commands that are used by this code. Please see the device headers 72 * for explanation. 73 */ 74 struct vmw_stdu_update { 75 SVGA3dCmdHeader header; 76 SVGA3dCmdUpdateGBScreenTarget body; 77 }; 78 79 struct vmw_stdu_dma { 80 SVGA3dCmdHeader header; 81 SVGA3dCmdSurfaceDMA body; 82 }; 83 84 struct vmw_stdu_surface_copy { 85 SVGA3dCmdHeader header; 86 SVGA3dCmdSurfaceCopy body; 87 }; 88 89 90 /** 91 * struct vmw_screen_target_display_unit 92 * 93 * @base: VMW specific DU structure 94 * @display_srf: surface to be displayed. The dimension of this will always 95 * match the display mode. If the display mode matches 96 * content_vfbs dimensions, then this is a pointer into the 97 * corresponding field in content_vfbs. If not, then this 98 * is a separate buffer to which content_vfbs will blit to. 99 * @content_fb: holds the rendered content, can be a surface or DMA buffer 100 * @content_type: content_fb type 101 * @defined: true if the current display unit has been initialized 102 */ 103 struct vmw_screen_target_display_unit { 104 struct vmw_display_unit base; 105 106 struct vmw_surface *display_srf; 107 struct drm_framebuffer *content_fb; 108 109 enum stdu_content_type content_fb_type; 110 111 bool defined; 112 }; 113 114 115 116 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu); 117 118 119 120 /****************************************************************************** 121 * Screen Target Display Unit helper Functions 122 *****************************************************************************/ 123 124 /** 125 * vmw_stdu_pin_display - pins the resource associated with the display surface 126 * 127 * @stdu: contains the display surface 128 * 129 * Since the display surface can either be a private surface allocated by us, 130 * or it can point to the content surface, we use this function to not pin the 131 * same resource twice. 132 */ 133 static int vmw_stdu_pin_display(struct vmw_screen_target_display_unit *stdu) 134 { 135 return vmw_resource_pin(&stdu->display_srf->res, false); 136 } 137 138 139 140 /** 141 * vmw_stdu_unpin_display - unpins the resource associated with display surface 142 * 143 * @stdu: contains the display surface 144 * 145 * If the display surface was privatedly allocated by 146 * vmw_surface_gb_priv_define() and not registered as a framebuffer, then it 147 * won't be automatically cleaned up when all the framebuffers are freed. As 148 * such, we have to explicitly call vmw_resource_unreference() to get it freed. 149 */ 150 static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu) 151 { 152 if (stdu->display_srf) { 153 struct vmw_resource *res = &stdu->display_srf->res; 154 155 vmw_resource_unpin(res); 156 157 if (stdu->content_fb_type != SAME_AS_DISPLAY) { 158 vmw_resource_unreference(&res); 159 stdu->content_fb_type = SAME_AS_DISPLAY; 160 } 161 162 stdu->display_srf = NULL; 163 } 164 } 165 166 167 168 /****************************************************************************** 169 * Screen Target Display Unit CRTC Functions 170 *****************************************************************************/ 171 172 173 /** 174 * vmw_stdu_crtc_destroy - cleans up the STDU 175 * 176 * @crtc: used to get a reference to the containing STDU 177 */ 178 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc) 179 { 180 vmw_stdu_destroy(vmw_crtc_to_stdu(crtc)); 181 } 182 183 /** 184 * vmw_stdu_define_st - Defines a Screen Target 185 * 186 * @dev_priv: VMW DRM device 187 * @stdu: display unit to create a Screen Target for 188 * 189 * Creates a STDU that we can used later. This function is called whenever the 190 * framebuffer size changes. 191 * 192 * RETURNs: 193 * 0 on success, error code on failure 194 */ 195 static int vmw_stdu_define_st(struct vmw_private *dev_priv, 196 struct vmw_screen_target_display_unit *stdu) 197 { 198 struct { 199 SVGA3dCmdHeader header; 200 SVGA3dCmdDefineGBScreenTarget body; 201 } *cmd; 202 203 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 204 205 if (unlikely(cmd == NULL)) { 206 DRM_ERROR("Out of FIFO space defining Screen Target\n"); 207 return -ENOMEM; 208 } 209 210 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET; 211 cmd->header.size = sizeof(cmd->body); 212 213 cmd->body.stid = stdu->base.unit; 214 cmd->body.width = stdu->display_srf->base_size.width; 215 cmd->body.height = stdu->display_srf->base_size.height; 216 cmd->body.flags = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0; 217 cmd->body.dpi = 0; 218 cmd->body.xRoot = stdu->base.crtc.x; 219 cmd->body.yRoot = stdu->base.crtc.y; 220 221 if (!stdu->base.is_implicit) { 222 cmd->body.xRoot = stdu->base.gui_x; 223 cmd->body.yRoot = stdu->base.gui_y; 224 } 225 226 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 227 228 stdu->defined = true; 229 230 return 0; 231 } 232 233 234 235 /** 236 * vmw_stdu_bind_st - Binds a surface to a Screen Target 237 * 238 * @dev_priv: VMW DRM device 239 * @stdu: display unit affected 240 * @res: Buffer to bind to the screen target. Set to NULL to blank screen. 241 * 242 * Binding a surface to a Screen Target the same as flipping 243 */ 244 static int vmw_stdu_bind_st(struct vmw_private *dev_priv, 245 struct vmw_screen_target_display_unit *stdu, 246 struct vmw_resource *res) 247 { 248 SVGA3dSurfaceImageId image; 249 250 struct { 251 SVGA3dCmdHeader header; 252 SVGA3dCmdBindGBScreenTarget body; 253 } *cmd; 254 255 256 if (!stdu->defined) { 257 DRM_ERROR("No screen target defined\n"); 258 return -EINVAL; 259 } 260 261 /* Set up image using information in vfb */ 262 memset(&image, 0, sizeof(image)); 263 image.sid = res ? res->id : SVGA3D_INVALID_ID; 264 265 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 266 267 if (unlikely(cmd == NULL)) { 268 DRM_ERROR("Out of FIFO space binding a screen target\n"); 269 return -ENOMEM; 270 } 271 272 cmd->header.id = SVGA_3D_CMD_BIND_GB_SCREENTARGET; 273 cmd->header.size = sizeof(cmd->body); 274 275 cmd->body.stid = stdu->base.unit; 276 cmd->body.image = image; 277 278 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 279 280 return 0; 281 } 282 283 /** 284 * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a 285 * bounding box. 286 * 287 * @cmd: Pointer to command stream. 288 * @unit: Screen target unit. 289 * @left: Left side of bounding box. 290 * @right: Right side of bounding box. 291 * @top: Top side of bounding box. 292 * @bottom: Bottom side of bounding box. 293 */ 294 static void vmw_stdu_populate_update(void *cmd, int unit, 295 s32 left, s32 right, s32 top, s32 bottom) 296 { 297 struct vmw_stdu_update *update = cmd; 298 299 update->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET; 300 update->header.size = sizeof(update->body); 301 302 update->body.stid = unit; 303 update->body.rect.x = left; 304 update->body.rect.y = top; 305 update->body.rect.w = right - left; 306 update->body.rect.h = bottom - top; 307 } 308 309 /** 310 * vmw_stdu_update_st - Full update of a Screen Target 311 * 312 * @dev_priv: VMW DRM device 313 * @stdu: display unit affected 314 * 315 * This function needs to be called whenever the content of a screen 316 * target has changed completely. Typically as a result of a backing 317 * surface change. 318 * 319 * RETURNS: 320 * 0 on success, error code on failure 321 */ 322 static int vmw_stdu_update_st(struct vmw_private *dev_priv, 323 struct vmw_screen_target_display_unit *stdu) 324 { 325 struct vmw_stdu_update *cmd; 326 struct drm_crtc *crtc = &stdu->base.crtc; 327 328 if (!stdu->defined) { 329 DRM_ERROR("No screen target defined"); 330 return -EINVAL; 331 } 332 333 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 334 335 if (unlikely(cmd == NULL)) { 336 DRM_ERROR("Out of FIFO space updating a Screen Target\n"); 337 return -ENOMEM; 338 } 339 340 vmw_stdu_populate_update(cmd, stdu->base.unit, 0, crtc->mode.hdisplay, 341 0, crtc->mode.vdisplay); 342 343 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 344 345 return 0; 346 } 347 348 349 350 /** 351 * vmw_stdu_destroy_st - Destroy a Screen Target 352 * 353 * @dev_priv: VMW DRM device 354 * @stdu: display unit to destroy 355 */ 356 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv, 357 struct vmw_screen_target_display_unit *stdu) 358 { 359 int ret; 360 361 struct { 362 SVGA3dCmdHeader header; 363 SVGA3dCmdDestroyGBScreenTarget body; 364 } *cmd; 365 366 367 /* Nothing to do if not successfully defined */ 368 if (unlikely(!stdu->defined)) 369 return 0; 370 371 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 372 373 if (unlikely(cmd == NULL)) { 374 DRM_ERROR("Out of FIFO space, screen target not destroyed\n"); 375 return -ENOMEM; 376 } 377 378 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET; 379 cmd->header.size = sizeof(cmd->body); 380 381 cmd->body.stid = stdu->base.unit; 382 383 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 384 385 /* Force sync */ 386 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 387 if (unlikely(ret != 0)) 388 DRM_ERROR("Failed to sync with HW"); 389 390 stdu->defined = false; 391 392 return ret; 393 } 394 395 396 397 /** 398 * vmw_stdu_crtc_set_config - Sets a mode 399 * 400 * @set: mode parameters 401 * 402 * This function is the device-specific portion of the DRM CRTC mode set. 403 * For the SVGA device, we do this by defining a Screen Target, binding a 404 * GB Surface to that target, and finally update the screen target. 405 * 406 * RETURNS: 407 * 0 on success, error code otherwise 408 */ 409 static int vmw_stdu_crtc_set_config(struct drm_mode_set *set) 410 { 411 struct vmw_private *dev_priv; 412 struct vmw_screen_target_display_unit *stdu; 413 struct vmw_framebuffer *vfb; 414 struct vmw_framebuffer_surface *new_vfbs; 415 struct drm_display_mode *mode; 416 struct drm_framebuffer *new_fb; 417 struct drm_crtc *crtc; 418 struct drm_encoder *encoder; 419 struct drm_connector *connector; 420 int ret; 421 422 423 if (!set || !set->crtc) 424 return -EINVAL; 425 426 crtc = set->crtc; 427 crtc->x = set->x; 428 crtc->y = set->y; 429 stdu = vmw_crtc_to_stdu(crtc); 430 mode = set->mode; 431 new_fb = set->fb; 432 dev_priv = vmw_priv(crtc->dev); 433 434 435 if (set->num_connectors > 1) { 436 DRM_ERROR("Too many connectors\n"); 437 return -EINVAL; 438 } 439 440 if (set->num_connectors == 1 && 441 set->connectors[0] != &stdu->base.connector) { 442 DRM_ERROR("Connectors don't match %p %p\n", 443 set->connectors[0], &stdu->base.connector); 444 return -EINVAL; 445 } 446 447 448 /* Since they always map one to one these are safe */ 449 connector = &stdu->base.connector; 450 encoder = &stdu->base.encoder; 451 452 453 /* 454 * After this point the CRTC will be considered off unless a new fb 455 * is bound 456 */ 457 if (stdu->defined) { 458 /* Unbind current surface by binding an invalid one */ 459 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL); 460 if (unlikely(ret != 0)) 461 return ret; 462 463 /* Update Screen Target, display will now be blank */ 464 if (crtc->primary->fb) { 465 vmw_stdu_update_st(dev_priv, stdu); 466 if (unlikely(ret != 0)) 467 return ret; 468 } 469 470 crtc->primary->fb = NULL; 471 crtc->enabled = false; 472 encoder->crtc = NULL; 473 connector->encoder = NULL; 474 475 vmw_stdu_unpin_display(stdu); 476 stdu->content_fb = NULL; 477 stdu->content_fb_type = SAME_AS_DISPLAY; 478 479 ret = vmw_stdu_destroy_st(dev_priv, stdu); 480 /* The hardware is hung, give up */ 481 if (unlikely(ret != 0)) 482 return ret; 483 } 484 485 486 /* Any of these conditions means the caller wants CRTC off */ 487 if (set->num_connectors == 0 || !mode || !new_fb) 488 return 0; 489 490 491 if (set->x + mode->hdisplay > new_fb->width || 492 set->y + mode->vdisplay > new_fb->height) { 493 DRM_ERROR("Set outside of framebuffer\n"); 494 return -EINVAL; 495 } 496 497 stdu->content_fb = new_fb; 498 vfb = vmw_framebuffer_to_vfb(stdu->content_fb); 499 500 if (vfb->dmabuf) 501 stdu->content_fb_type = SEPARATE_DMA; 502 503 /* 504 * If the requested mode is different than the width and height 505 * of the FB or if the content buffer is a DMA buf, then allocate 506 * a display FB that matches the dimension of the mode 507 */ 508 if (mode->hdisplay != new_fb->width || 509 mode->vdisplay != new_fb->height || 510 stdu->content_fb_type != SAME_AS_DISPLAY) { 511 struct vmw_surface content_srf; 512 struct drm_vmw_size display_base_size = {0}; 513 struct vmw_surface *display_srf; 514 515 516 display_base_size.width = mode->hdisplay; 517 display_base_size.height = mode->vdisplay; 518 display_base_size.depth = 1; 519 520 /* 521 * If content buffer is a DMA buf, then we have to construct 522 * surface info 523 */ 524 if (stdu->content_fb_type == SEPARATE_DMA) { 525 526 switch (new_fb->bits_per_pixel) { 527 case 32: 528 content_srf.format = SVGA3D_X8R8G8B8; 529 break; 530 531 case 16: 532 content_srf.format = SVGA3D_R5G6B5; 533 break; 534 535 case 8: 536 content_srf.format = SVGA3D_P8; 537 break; 538 539 default: 540 DRM_ERROR("Invalid format\n"); 541 ret = -EINVAL; 542 goto err_unref_content; 543 } 544 545 content_srf.flags = 0; 546 content_srf.mip_levels[0] = 1; 547 content_srf.multisample_count = 0; 548 } else { 549 550 stdu->content_fb_type = SEPARATE_SURFACE; 551 552 new_vfbs = vmw_framebuffer_to_vfbs(new_fb); 553 content_srf = *new_vfbs->surface; 554 } 555 556 557 ret = vmw_surface_gb_priv_define(crtc->dev, 558 0, /* because kernel visible only */ 559 content_srf.flags, 560 content_srf.format, 561 true, /* a scanout buffer */ 562 content_srf.mip_levels[0], 563 content_srf.multisample_count, 564 0, 565 display_base_size, 566 &display_srf); 567 if (unlikely(ret != 0)) { 568 DRM_ERROR("Cannot allocate a display FB.\n"); 569 goto err_unref_content; 570 } 571 572 stdu->display_srf = display_srf; 573 } else { 574 new_vfbs = vmw_framebuffer_to_vfbs(new_fb); 575 stdu->display_srf = new_vfbs->surface; 576 } 577 578 579 ret = vmw_stdu_pin_display(stdu); 580 if (unlikely(ret != 0)) { 581 stdu->display_srf = NULL; 582 goto err_unref_content; 583 } 584 585 vmw_svga_enable(dev_priv); 586 587 /* 588 * Steps to displaying a surface, assume surface is already 589 * bound: 590 * 1. define a screen target 591 * 2. bind a fb to the screen target 592 * 3. update that screen target (this is done later by 593 * vmw_kms_stdu_do_surface_dirty_or_present) 594 */ 595 ret = vmw_stdu_define_st(dev_priv, stdu); 596 if (unlikely(ret != 0)) 597 goto err_unpin_display_and_content; 598 599 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res); 600 if (unlikely(ret != 0)) 601 goto err_unpin_destroy_st; 602 603 604 connector->encoder = encoder; 605 encoder->crtc = crtc; 606 607 crtc->mode = *mode; 608 crtc->primary->fb = new_fb; 609 crtc->enabled = true; 610 611 return ret; 612 613 err_unpin_destroy_st: 614 vmw_stdu_destroy_st(dev_priv, stdu); 615 err_unpin_display_and_content: 616 vmw_stdu_unpin_display(stdu); 617 err_unref_content: 618 stdu->content_fb = NULL; 619 return ret; 620 } 621 622 623 624 /** 625 * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target 626 * 627 * @crtc: CRTC to attach FB to 628 * @fb: FB to attach 629 * @event: Event to be posted. This event should've been alloced 630 * using k[mz]alloc, and should've been completely initialized. 631 * @page_flip_flags: Input flags. 632 * 633 * If the STDU uses the same display and content buffers, i.e. a true flip, 634 * this function will replace the existing display buffer with the new content 635 * buffer. 636 * 637 * If the STDU uses different display and content buffers, i.e. a blit, then 638 * only the content buffer will be updated. 639 * 640 * RETURNS: 641 * 0 on success, error code on failure 642 */ 643 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc, 644 struct drm_framebuffer *new_fb, 645 struct drm_pending_vblank_event *event, 646 uint32_t flags) 647 648 { 649 struct vmw_private *dev_priv = vmw_priv(crtc->dev); 650 struct vmw_screen_target_display_unit *stdu; 651 int ret; 652 653 if (crtc == NULL) 654 return -EINVAL; 655 656 dev_priv = vmw_priv(crtc->dev); 657 stdu = vmw_crtc_to_stdu(crtc); 658 crtc->primary->fb = new_fb; 659 stdu->content_fb = new_fb; 660 661 if (stdu->display_srf) { 662 /* 663 * If the display surface is the same as the content surface 664 * then remove the reference 665 */ 666 if (stdu->content_fb_type == SAME_AS_DISPLAY) { 667 if (stdu->defined) { 668 /* Unbind the current surface */ 669 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL); 670 if (unlikely(ret != 0)) 671 goto err_out; 672 } 673 vmw_stdu_unpin_display(stdu); 674 stdu->display_srf = NULL; 675 } 676 } 677 678 679 if (!new_fb) { 680 /* Blanks the display */ 681 (void) vmw_stdu_update_st(dev_priv, stdu); 682 683 return 0; 684 } 685 686 687 if (stdu->content_fb_type == SAME_AS_DISPLAY) { 688 stdu->display_srf = vmw_framebuffer_to_vfbs(new_fb)->surface; 689 ret = vmw_stdu_pin_display(stdu); 690 if (ret) { 691 stdu->display_srf = NULL; 692 goto err_out; 693 } 694 695 /* Bind display surface */ 696 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res); 697 if (unlikely(ret != 0)) 698 goto err_unpin_display_and_content; 699 } 700 701 /* Update display surface: after this point everything is bound */ 702 ret = vmw_stdu_update_st(dev_priv, stdu); 703 if (unlikely(ret != 0)) 704 return ret; 705 706 if (event) { 707 struct vmw_fence_obj *fence = NULL; 708 struct drm_file *file_priv = event->base.file_priv; 709 710 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); 711 if (!fence) 712 return -ENOMEM; 713 714 ret = vmw_event_fence_action_queue(file_priv, fence, 715 &event->base, 716 &event->event.tv_sec, 717 &event->event.tv_usec, 718 true); 719 vmw_fence_obj_unreference(&fence); 720 } 721 722 return ret; 723 724 err_unpin_display_and_content: 725 vmw_stdu_unpin_display(stdu); 726 err_out: 727 crtc->primary->fb = NULL; 728 stdu->content_fb = NULL; 729 return ret; 730 } 731 732 733 /** 734 * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect 735 * 736 * @dirty: The closure structure. 737 * 738 * Encodes a surface DMA command cliprect and updates the bounding box 739 * for the DMA. 740 */ 741 static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty) 742 { 743 struct vmw_stdu_dirty *ddirty = 744 container_of(dirty, struct vmw_stdu_dirty, base); 745 struct vmw_stdu_dma *cmd = dirty->cmd; 746 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; 747 748 blit += dirty->num_hits; 749 blit->srcx = dirty->fb_x; 750 blit->srcy = dirty->fb_y; 751 blit->x = dirty->unit_x1; 752 blit->y = dirty->unit_y1; 753 blit->d = 1; 754 blit->w = dirty->unit_x2 - dirty->unit_x1; 755 blit->h = dirty->unit_y2 - dirty->unit_y1; 756 dirty->num_hits++; 757 758 if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM) 759 return; 760 761 /* Destination bounding box */ 762 ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1); 763 ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1); 764 ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2); 765 ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2); 766 } 767 768 /** 769 * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command. 770 * 771 * @dirty: The closure structure. 772 * 773 * Fills in the missing fields in a DMA command, and optionally encodes 774 * a screen target update command, depending on transfer direction. 775 */ 776 static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty) 777 { 778 struct vmw_stdu_dirty *ddirty = 779 container_of(dirty, struct vmw_stdu_dirty, base); 780 struct vmw_screen_target_display_unit *stdu = 781 container_of(dirty->unit, typeof(*stdu), base); 782 struct vmw_stdu_dma *cmd = dirty->cmd; 783 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; 784 SVGA3dCmdSurfaceDMASuffix *suffix = 785 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits]; 786 size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix); 787 788 if (!dirty->num_hits) { 789 vmw_fifo_commit(dirty->dev_priv, 0); 790 return; 791 } 792 793 cmd->header.id = SVGA_3D_CMD_SURFACE_DMA; 794 cmd->header.size = sizeof(cmd->body) + blit_size; 795 vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr); 796 cmd->body.guest.pitch = ddirty->pitch; 797 cmd->body.host.sid = stdu->display_srf->res.id; 798 cmd->body.host.face = 0; 799 cmd->body.host.mipmap = 0; 800 cmd->body.transfer = ddirty->transfer; 801 suffix->suffixSize = sizeof(*suffix); 802 suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE; 803 804 if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) { 805 blit_size += sizeof(struct vmw_stdu_update); 806 807 vmw_stdu_populate_update(&suffix[1], stdu->base.unit, 808 ddirty->left, ddirty->right, 809 ddirty->top, ddirty->bottom); 810 } 811 812 vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size); 813 814 ddirty->left = ddirty->top = S32_MAX; 815 ddirty->right = ddirty->bottom = S32_MIN; 816 } 817 818 /** 819 * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed 820 * framebuffer and the screen target system. 821 * 822 * @dev_priv: Pointer to the device private structure. 823 * @file_priv: Pointer to a struct drm-file identifying the caller. May be 824 * set to NULL, but then @user_fence_rep must also be set to NULL. 825 * @vfb: Pointer to the dma-buffer backed framebuffer. 826 * @clips: Array of clip rects. Either @clips or @vclips must be NULL. 827 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 828 * be NULL. 829 * @num_clips: Number of clip rects in @clips or @vclips. 830 * @increment: Increment to use when looping over @clips or @vclips. 831 * @to_surface: Whether to DMA to the screen target system as opposed to 832 * from the screen target system. 833 * @interruptible: Whether to perform waits interruptible if possible. 834 * 835 * If DMA-ing till the screen target system, the function will also notify 836 * the screen target system that a bounding box of the cliprects has been 837 * updated. 838 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 839 * interrupted. 840 */ 841 int vmw_kms_stdu_dma(struct vmw_private *dev_priv, 842 struct drm_file *file_priv, 843 struct vmw_framebuffer *vfb, 844 struct drm_vmw_fence_rep __user *user_fence_rep, 845 struct drm_clip_rect *clips, 846 struct drm_vmw_rect *vclips, 847 uint32_t num_clips, 848 int increment, 849 bool to_surface, 850 bool interruptible) 851 { 852 struct vmw_dma_buffer *buf = 853 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer; 854 struct vmw_stdu_dirty ddirty; 855 int ret; 856 857 ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible, 858 false); 859 if (ret) 860 return ret; 861 862 ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM : 863 SVGA3D_READ_HOST_VRAM; 864 ddirty.left = ddirty.top = S32_MAX; 865 ddirty.right = ddirty.bottom = S32_MIN; 866 ddirty.pitch = vfb->base.pitches[0]; 867 ddirty.buf = buf; 868 ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit; 869 ddirty.base.clip = vmw_stdu_dmabuf_clip; 870 ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) + 871 num_clips * sizeof(SVGA3dCopyBox) + 872 sizeof(SVGA3dCmdSurfaceDMASuffix); 873 if (to_surface) 874 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update); 875 876 ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips, 877 0, 0, num_clips, increment, &ddirty.base); 878 vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL, 879 user_fence_rep); 880 881 return ret; 882 } 883 884 /** 885 * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect 886 * 887 * @dirty: The closure structure. 888 * 889 * Encodes a surface copy command cliprect and updates the bounding box 890 * for the copy. 891 */ 892 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty) 893 { 894 struct vmw_stdu_dirty *sdirty = 895 container_of(dirty, struct vmw_stdu_dirty, base); 896 struct vmw_stdu_surface_copy *cmd = dirty->cmd; 897 struct vmw_screen_target_display_unit *stdu = 898 container_of(dirty->unit, typeof(*stdu), base); 899 900 if (sdirty->sid != stdu->display_srf->res.id) { 901 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; 902 903 blit += dirty->num_hits; 904 blit->srcx = dirty->fb_x; 905 blit->srcy = dirty->fb_y; 906 blit->x = dirty->unit_x1; 907 blit->y = dirty->unit_y1; 908 blit->d = 1; 909 blit->w = dirty->unit_x2 - dirty->unit_x1; 910 blit->h = dirty->unit_y2 - dirty->unit_y1; 911 } 912 913 dirty->num_hits++; 914 915 /* Destination bounding box */ 916 sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1); 917 sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1); 918 sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2); 919 sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2); 920 } 921 922 /** 923 * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface 924 * copy command. 925 * 926 * @dirty: The closure structure. 927 * 928 * Fills in the missing fields in a surface copy command, and encodes a screen 929 * target update command. 930 */ 931 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty) 932 { 933 struct vmw_stdu_dirty *sdirty = 934 container_of(dirty, struct vmw_stdu_dirty, base); 935 struct vmw_screen_target_display_unit *stdu = 936 container_of(dirty->unit, typeof(*stdu), base); 937 struct vmw_stdu_surface_copy *cmd = dirty->cmd; 938 struct vmw_stdu_update *update; 939 size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits; 940 size_t commit_size; 941 942 if (!dirty->num_hits) { 943 vmw_fifo_commit(dirty->dev_priv, 0); 944 return; 945 } 946 947 if (sdirty->sid != stdu->display_srf->res.id) { 948 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; 949 950 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY; 951 cmd->header.size = sizeof(cmd->body) + blit_size; 952 cmd->body.src.sid = sdirty->sid; 953 cmd->body.dest.sid = stdu->display_srf->res.id; 954 update = (struct vmw_stdu_update *) &blit[dirty->num_hits]; 955 commit_size = sizeof(*cmd) + blit_size + sizeof(*update); 956 } else { 957 update = dirty->cmd; 958 commit_size = sizeof(*update); 959 } 960 961 vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left, 962 sdirty->right, sdirty->top, sdirty->bottom); 963 964 vmw_fifo_commit(dirty->dev_priv, commit_size); 965 966 sdirty->left = sdirty->top = S32_MAX; 967 sdirty->right = sdirty->bottom = S32_MIN; 968 } 969 970 /** 971 * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer 972 * 973 * @dev_priv: Pointer to the device private structure. 974 * @framebuffer: Pointer to the surface-buffer backed framebuffer. 975 * @clips: Array of clip rects. Either @clips or @vclips must be NULL. 976 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 977 * be NULL. 978 * @srf: Pointer to surface to blit from. If NULL, the surface attached 979 * to @framebuffer will be used. 980 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates. 981 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates. 982 * @num_clips: Number of clip rects in @clips. 983 * @inc: Increment to use when looping over @clips. 984 * @out_fence: If non-NULL, will return a ref-counted pointer to a 985 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 986 * case the device has already synchronized. 987 * 988 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 989 * interrupted. 990 */ 991 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv, 992 struct vmw_framebuffer *framebuffer, 993 struct drm_clip_rect *clips, 994 struct drm_vmw_rect *vclips, 995 struct vmw_resource *srf, 996 s32 dest_x, 997 s32 dest_y, 998 unsigned num_clips, int inc, 999 struct vmw_fence_obj **out_fence) 1000 { 1001 struct vmw_framebuffer_surface *vfbs = 1002 container_of(framebuffer, typeof(*vfbs), base); 1003 struct vmw_stdu_dirty sdirty; 1004 int ret; 1005 1006 if (!srf) 1007 srf = &vfbs->surface->res; 1008 1009 ret = vmw_kms_helper_resource_prepare(srf, true); 1010 if (ret) 1011 return ret; 1012 1013 if (vfbs->is_dmabuf_proxy) { 1014 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc); 1015 if (ret) 1016 goto out_finish; 1017 } 1018 1019 sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit; 1020 sdirty.base.clip = vmw_kms_stdu_surface_clip; 1021 sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) + 1022 sizeof(SVGA3dCopyBox) * num_clips + 1023 sizeof(struct vmw_stdu_update); 1024 sdirty.sid = srf->id; 1025 sdirty.left = sdirty.top = S32_MAX; 1026 sdirty.right = sdirty.bottom = S32_MIN; 1027 1028 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1029 dest_x, dest_y, num_clips, inc, 1030 &sdirty.base); 1031 out_finish: 1032 vmw_kms_helper_resource_finish(srf, out_fence); 1033 1034 return ret; 1035 } 1036 1037 1038 /* 1039 * Screen Target CRTC dispatch table 1040 */ 1041 static struct drm_crtc_funcs vmw_stdu_crtc_funcs = { 1042 .save = vmw_du_crtc_save, 1043 .restore = vmw_du_crtc_restore, 1044 .cursor_set = vmw_du_crtc_cursor_set, 1045 .cursor_move = vmw_du_crtc_cursor_move, 1046 .gamma_set = vmw_du_crtc_gamma_set, 1047 .destroy = vmw_stdu_crtc_destroy, 1048 .set_config = vmw_stdu_crtc_set_config, 1049 .page_flip = vmw_stdu_crtc_page_flip, 1050 }; 1051 1052 1053 1054 /****************************************************************************** 1055 * Screen Target Display Unit Encoder Functions 1056 *****************************************************************************/ 1057 1058 /** 1059 * vmw_stdu_encoder_destroy - cleans up the STDU 1060 * 1061 * @encoder: used the get the containing STDU 1062 * 1063 * vmwgfx cleans up crtc/encoder/connector all at the same time so technically 1064 * this can be a no-op. Nevertheless, it doesn't hurt of have this in case 1065 * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't 1066 * get called. 1067 */ 1068 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder) 1069 { 1070 vmw_stdu_destroy(vmw_encoder_to_stdu(encoder)); 1071 } 1072 1073 static struct drm_encoder_funcs vmw_stdu_encoder_funcs = { 1074 .destroy = vmw_stdu_encoder_destroy, 1075 }; 1076 1077 1078 1079 /****************************************************************************** 1080 * Screen Target Display Unit Connector Functions 1081 *****************************************************************************/ 1082 1083 /** 1084 * vmw_stdu_connector_destroy - cleans up the STDU 1085 * 1086 * @connector: used to get the containing STDU 1087 * 1088 * vmwgfx cleans up crtc/encoder/connector all at the same time so technically 1089 * this can be a no-op. Nevertheless, it doesn't hurt of have this in case 1090 * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't 1091 * get called. 1092 */ 1093 static void vmw_stdu_connector_destroy(struct drm_connector *connector) 1094 { 1095 vmw_stdu_destroy(vmw_connector_to_stdu(connector)); 1096 } 1097 1098 1099 1100 static struct drm_connector_funcs vmw_stdu_connector_funcs = { 1101 .dpms = vmw_du_connector_dpms, 1102 .save = vmw_du_connector_save, 1103 .restore = vmw_du_connector_restore, 1104 .detect = vmw_du_connector_detect, 1105 .fill_modes = vmw_du_connector_fill_modes, 1106 .set_property = vmw_du_connector_set_property, 1107 .destroy = vmw_stdu_connector_destroy, 1108 }; 1109 1110 1111 1112 /** 1113 * vmw_stdu_init - Sets up a Screen Target Display Unit 1114 * 1115 * @dev_priv: VMW DRM device 1116 * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS 1117 * 1118 * This function is called once per CRTC, and allocates one Screen Target 1119 * display unit to represent that CRTC. Since the SVGA device does not separate 1120 * out encoder and connector, they are represented as part of the STDU as well. 1121 */ 1122 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit) 1123 { 1124 struct vmw_screen_target_display_unit *stdu; 1125 struct drm_device *dev = dev_priv->dev; 1126 struct drm_connector *connector; 1127 struct drm_encoder *encoder; 1128 struct drm_crtc *crtc; 1129 1130 1131 stdu = kzalloc(sizeof(*stdu), GFP_KERNEL); 1132 if (!stdu) 1133 return -ENOMEM; 1134 1135 stdu->base.unit = unit; 1136 crtc = &stdu->base.crtc; 1137 encoder = &stdu->base.encoder; 1138 connector = &stdu->base.connector; 1139 1140 stdu->base.pref_active = (unit == 0); 1141 stdu->base.pref_width = dev_priv->initial_width; 1142 stdu->base.pref_height = dev_priv->initial_height; 1143 stdu->base.is_implicit = true; 1144 1145 drm_connector_init(dev, connector, &vmw_stdu_connector_funcs, 1146 DRM_MODE_CONNECTOR_VIRTUAL); 1147 connector->status = vmw_du_connector_detect(connector, false); 1148 1149 drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs, 1150 DRM_MODE_ENCODER_VIRTUAL); 1151 drm_mode_connector_attach_encoder(connector, encoder); 1152 encoder->possible_crtcs = (1 << unit); 1153 encoder->possible_clones = 0; 1154 1155 (void) drm_connector_register(connector); 1156 1157 drm_crtc_init(dev, crtc, &vmw_stdu_crtc_funcs); 1158 1159 drm_mode_crtc_set_gamma_size(crtc, 256); 1160 1161 drm_object_attach_property(&connector->base, 1162 dev->mode_config.dirty_info_property, 1163 1); 1164 1165 return 0; 1166 } 1167 1168 1169 1170 /** 1171 * vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit 1172 * 1173 * @stdu: Screen Target Display Unit to be destroyed 1174 * 1175 * Clean up after vmw_stdu_init 1176 */ 1177 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu) 1178 { 1179 vmw_stdu_unpin_display(stdu); 1180 1181 vmw_du_cleanup(&stdu->base); 1182 kfree(stdu); 1183 } 1184 1185 1186 1187 /****************************************************************************** 1188 * Screen Target Display KMS Functions 1189 * 1190 * These functions are called by the common KMS code in vmwgfx_kms.c 1191 *****************************************************************************/ 1192 1193 /** 1194 * vmw_kms_stdu_init_display - Initializes a Screen Target based display 1195 * 1196 * @dev_priv: VMW DRM device 1197 * 1198 * This function initialize a Screen Target based display device. It checks 1199 * the capability bits to make sure the underlying hardware can support 1200 * screen targets, and then creates the maximum number of CRTCs, a.k.a Display 1201 * Units, as supported by the display hardware. 1202 * 1203 * RETURNS: 1204 * 0 on success, error code otherwise 1205 */ 1206 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv) 1207 { 1208 struct drm_device *dev = dev_priv->dev; 1209 int i, ret; 1210 1211 1212 /* Do nothing if Screen Target support is turned off */ 1213 if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE) 1214 return -ENOSYS; 1215 1216 if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) 1217 return -ENOSYS; 1218 1219 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 1220 if (unlikely(ret != 0)) 1221 return ret; 1222 1223 ret = drm_mode_create_dirty_info_property(dev); 1224 if (unlikely(ret != 0)) 1225 goto err_vblank_cleanup; 1226 1227 dev_priv->active_display_unit = vmw_du_screen_target; 1228 1229 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) { 1230 ret = vmw_stdu_init(dev_priv, i); 1231 1232 if (unlikely(ret != 0)) { 1233 DRM_ERROR("Failed to initialize STDU %d", i); 1234 goto err_vblank_cleanup; 1235 } 1236 } 1237 1238 DRM_INFO("Screen Target Display device initialized\n"); 1239 1240 return 0; 1241 1242 err_vblank_cleanup: 1243 drm_vblank_cleanup(dev); 1244 return ret; 1245 } 1246 1247 1248 1249 /** 1250 * vmw_kms_stdu_close_display - Cleans up after vmw_kms_stdu_init_display 1251 * 1252 * @dev_priv: VMW DRM device 1253 * 1254 * Frees up any resources allocated by vmw_kms_stdu_init_display 1255 * 1256 * RETURNS: 1257 * 0 on success 1258 */ 1259 int vmw_kms_stdu_close_display(struct vmw_private *dev_priv) 1260 { 1261 struct drm_device *dev = dev_priv->dev; 1262 1263 drm_vblank_cleanup(dev); 1264 1265 return 0; 1266 } 1267