1 /* $NetBSD: vmwgfx_scrn.c,v 1.2 2018/08/27 04:58:37 riastradh Exp $ */ 2 3 /************************************************************************** 4 * 5 * Copyright © 2011-2015 VMware, Inc., Palo Alto, CA., USA 6 * All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the 10 * "Software"), to deal in the Software without restriction, including 11 * without limitation the rights to use, copy, modify, merge, publish, 12 * distribute, sub license, and/or sell copies of the Software, and to 13 * permit persons to whom the Software is furnished to do so, subject to 14 * the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial portions 18 * of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 23 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 24 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 25 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 26 * USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 **************************************************************************/ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: vmwgfx_scrn.c,v 1.2 2018/08/27 04:58:37 riastradh Exp $"); 32 33 #include "vmwgfx_kms.h" 34 #include <drm/drm_plane_helper.h> 35 36 37 #define vmw_crtc_to_sou(x) \ 38 container_of(x, struct vmw_screen_object_unit, base.crtc) 39 #define vmw_encoder_to_sou(x) \ 40 container_of(x, struct vmw_screen_object_unit, base.encoder) 41 #define vmw_connector_to_sou(x) \ 42 container_of(x, struct vmw_screen_object_unit, base.connector) 43 44 /** 45 * struct vmw_kms_sou_surface_dirty - Closure structure for 46 * blit surface to screen command. 47 * @base: The base type we derive from. Used by vmw_kms_helper_dirty(). 48 * @left: Left side of bounding box. 49 * @right: Right side of bounding box. 50 * @top: Top side of bounding box. 51 * @bottom: Bottom side of bounding box. 52 * @dst_x: Difference between source clip rects and framebuffer coordinates. 53 * @dst_y: Difference between source clip rects and framebuffer coordinates. 54 * @sid: Surface id of surface to copy from. 55 */ 56 struct vmw_kms_sou_surface_dirty { 57 struct vmw_kms_dirty base; 58 s32 left, right, top, bottom; 59 s32 dst_x, dst_y; 60 u32 sid; 61 }; 62 63 /* 64 * SVGA commands that are used by this code. Please see the device headers 65 * for explanation. 66 */ 67 struct vmw_kms_sou_readback_blit { 68 uint32 header; 69 SVGAFifoCmdBlitScreenToGMRFB body; 70 }; 71 72 struct vmw_kms_sou_dmabuf_blit { 73 uint32 header; 74 SVGAFifoCmdBlitGMRFBToScreen body; 75 }; 76 77 struct vmw_kms_sou_dirty_cmd { 78 SVGA3dCmdHeader header; 79 SVGA3dCmdBlitSurfaceToScreen body; 80 }; 81 82 83 /* 84 * Other structs. 85 */ 86 87 struct vmw_screen_object_display { 88 unsigned num_implicit; 89 90 struct vmw_framebuffer *implicit_fb; 91 SVGAFifoCmdDefineGMRFB cur; 92 struct vmw_dma_buffer *pinned_gmrfb; 93 }; 94 95 /** 96 * Display unit using screen objects. 97 */ 98 struct vmw_screen_object_unit { 99 struct vmw_display_unit base; 100 101 unsigned long buffer_size; /**< Size of allocated buffer */ 102 struct vmw_dma_buffer *buffer; /**< Backing store buffer */ 103 104 bool defined; 105 bool active_implicit; 106 }; 107 108 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) 109 { 110 vmw_du_cleanup(&sou->base); 111 kfree(sou); 112 } 113 114 115 /* 116 * Screen Object Display Unit CRTC functions 117 */ 118 119 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) 120 { 121 vmw_sou_destroy(vmw_crtc_to_sou(crtc)); 122 } 123 124 static void vmw_sou_del_active(struct vmw_private *vmw_priv, 125 struct vmw_screen_object_unit *sou) 126 { 127 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 128 129 if (sou->active_implicit) { 130 if (--(ld->num_implicit) == 0) 131 ld->implicit_fb = NULL; 132 sou->active_implicit = false; 133 } 134 } 135 136 static void vmw_sou_add_active(struct vmw_private *vmw_priv, 137 struct vmw_screen_object_unit *sou, 138 struct vmw_framebuffer *vfb) 139 { 140 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 141 142 BUG_ON(!ld->num_implicit && ld->implicit_fb); 143 144 if (!sou->active_implicit && sou->base.is_implicit) { 145 ld->implicit_fb = vfb; 146 sou->active_implicit = true; 147 ld->num_implicit++; 148 } 149 } 150 151 /** 152 * Send the fifo command to create a screen. 153 */ 154 static int vmw_sou_fifo_create(struct vmw_private *dev_priv, 155 struct vmw_screen_object_unit *sou, 156 uint32_t x, uint32_t y, 157 struct drm_display_mode *mode) 158 { 159 size_t fifo_size; 160 161 struct { 162 struct { 163 uint32_t cmdType; 164 } header; 165 SVGAScreenObject obj; 166 } *cmd; 167 168 BUG_ON(!sou->buffer); 169 170 fifo_size = sizeof(*cmd); 171 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 172 /* The hardware has hung, nothing we can do about it here. */ 173 if (unlikely(cmd == NULL)) { 174 DRM_ERROR("Fifo reserve failed.\n"); 175 return -ENOMEM; 176 } 177 178 memset(cmd, 0, fifo_size); 179 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; 180 cmd->obj.structSize = sizeof(SVGAScreenObject); 181 cmd->obj.id = sou->base.unit; 182 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | 183 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); 184 cmd->obj.size.width = mode->hdisplay; 185 cmd->obj.size.height = mode->vdisplay; 186 if (sou->base.is_implicit) { 187 cmd->obj.root.x = x; 188 cmd->obj.root.y = y; 189 } else { 190 cmd->obj.root.x = sou->base.gui_x; 191 cmd->obj.root.y = sou->base.gui_y; 192 } 193 194 /* Ok to assume that buffer is pinned in vram */ 195 vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); 196 cmd->obj.backingStore.pitch = mode->hdisplay * 4; 197 198 vmw_fifo_commit(dev_priv, fifo_size); 199 200 sou->defined = true; 201 202 return 0; 203 } 204 205 /** 206 * Send the fifo command to destroy a screen. 207 */ 208 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, 209 struct vmw_screen_object_unit *sou) 210 { 211 size_t fifo_size; 212 int ret; 213 214 struct { 215 struct { 216 uint32_t cmdType; 217 } header; 218 SVGAFifoCmdDestroyScreen body; 219 } *cmd; 220 221 /* no need to do anything */ 222 if (unlikely(!sou->defined)) 223 return 0; 224 225 fifo_size = sizeof(*cmd); 226 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 227 /* the hardware has hung, nothing we can do about it here */ 228 if (unlikely(cmd == NULL)) { 229 DRM_ERROR("Fifo reserve failed.\n"); 230 return -ENOMEM; 231 } 232 233 memset(cmd, 0, fifo_size); 234 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; 235 cmd->body.screenId = sou->base.unit; 236 237 vmw_fifo_commit(dev_priv, fifo_size); 238 239 /* Force sync */ 240 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 241 if (unlikely(ret != 0)) 242 DRM_ERROR("Failed to sync with HW"); 243 else 244 sou->defined = false; 245 246 return ret; 247 } 248 249 /** 250 * Free the backing store. 251 */ 252 static void vmw_sou_backing_free(struct vmw_private *dev_priv, 253 struct vmw_screen_object_unit *sou) 254 { 255 vmw_dmabuf_unreference(&sou->buffer); 256 sou->buffer_size = 0; 257 } 258 259 /** 260 * Allocate the backing store for the buffer. 261 */ 262 static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, 263 struct vmw_screen_object_unit *sou, 264 unsigned long size) 265 { 266 int ret; 267 268 if (sou->buffer_size == size) 269 return 0; 270 271 if (sou->buffer) 272 vmw_sou_backing_free(dev_priv, sou); 273 274 sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); 275 if (unlikely(sou->buffer == NULL)) 276 return -ENOMEM; 277 278 /* After we have alloced the backing store might not be able to 279 * resume the overlays, this is preferred to failing to alloc. 280 */ 281 vmw_overlay_pause_all(dev_priv); 282 ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, 283 &vmw_vram_ne_placement, 284 false, &vmw_dmabuf_bo_free); 285 vmw_overlay_resume_all(dev_priv); 286 287 if (unlikely(ret != 0)) 288 sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ 289 else 290 sou->buffer_size = size; 291 292 return ret; 293 } 294 295 static int vmw_sou_crtc_set_config(struct drm_mode_set *set) 296 { 297 struct vmw_private *dev_priv; 298 struct vmw_screen_object_unit *sou; 299 struct drm_connector *connector; 300 struct drm_display_mode *mode; 301 struct drm_encoder *encoder; 302 struct vmw_framebuffer *vfb; 303 struct drm_framebuffer *fb; 304 struct drm_crtc *crtc; 305 int ret = 0; 306 307 if (!set) 308 return -EINVAL; 309 310 if (!set->crtc) 311 return -EINVAL; 312 313 /* get the sou */ 314 crtc = set->crtc; 315 sou = vmw_crtc_to_sou(crtc); 316 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 317 dev_priv = vmw_priv(crtc->dev); 318 319 if (set->num_connectors > 1) { 320 DRM_ERROR("Too many connectors\n"); 321 return -EINVAL; 322 } 323 324 if (set->num_connectors == 1 && 325 set->connectors[0] != &sou->base.connector) { 326 DRM_ERROR("Connector doesn't match %p %p\n", 327 set->connectors[0], &sou->base.connector); 328 return -EINVAL; 329 } 330 331 /* sou only supports one fb active at the time */ 332 if (sou->base.is_implicit && 333 dev_priv->sou_priv->implicit_fb && vfb && 334 !(dev_priv->sou_priv->num_implicit == 1 && 335 sou->active_implicit) && 336 dev_priv->sou_priv->implicit_fb != vfb) { 337 DRM_ERROR("Multiple framebuffers not supported\n"); 338 return -EINVAL; 339 } 340 341 /* since they always map one to one these are safe */ 342 connector = &sou->base.connector; 343 encoder = &sou->base.encoder; 344 345 /* should we turn the crtc off */ 346 if (set->num_connectors == 0 || !set->mode || !set->fb) { 347 ret = vmw_sou_fifo_destroy(dev_priv, sou); 348 /* the hardware has hung don't do anything more */ 349 if (unlikely(ret != 0)) 350 return ret; 351 352 connector->encoder = NULL; 353 encoder->crtc = NULL; 354 crtc->primary->fb = NULL; 355 crtc->x = 0; 356 crtc->y = 0; 357 crtc->enabled = false; 358 359 vmw_sou_del_active(dev_priv, sou); 360 361 vmw_sou_backing_free(dev_priv, sou); 362 363 return 0; 364 } 365 366 367 /* we now know we want to set a mode */ 368 mode = set->mode; 369 fb = set->fb; 370 371 if (set->x + mode->hdisplay > fb->width || 372 set->y + mode->vdisplay > fb->height) { 373 DRM_ERROR("set outside of framebuffer\n"); 374 return -EINVAL; 375 } 376 377 vmw_svga_enable(dev_priv); 378 379 if (mode->hdisplay != crtc->mode.hdisplay || 380 mode->vdisplay != crtc->mode.vdisplay) { 381 /* no need to check if depth is different, because backing 382 * store depth is forced to 4 by the device. 383 */ 384 385 ret = vmw_sou_fifo_destroy(dev_priv, sou); 386 /* the hardware has hung don't do anything more */ 387 if (unlikely(ret != 0)) 388 return ret; 389 390 vmw_sou_backing_free(dev_priv, sou); 391 } 392 393 if (!sou->buffer) { 394 /* forced to depth 4 by the device */ 395 size_t size = mode->hdisplay * mode->vdisplay * 4; 396 ret = vmw_sou_backing_alloc(dev_priv, sou, size); 397 if (unlikely(ret != 0)) 398 return ret; 399 } 400 401 ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); 402 if (unlikely(ret != 0)) { 403 /* 404 * We are in a bit of a situation here, the hardware has 405 * hung and we may or may not have a buffer hanging of 406 * the screen object, best thing to do is not do anything 407 * if we where defined, if not just turn the crtc of. 408 * Not what userspace wants but it needs to htfu. 409 */ 410 if (sou->defined) 411 return ret; 412 413 connector->encoder = NULL; 414 encoder->crtc = NULL; 415 crtc->primary->fb = NULL; 416 crtc->x = 0; 417 crtc->y = 0; 418 crtc->enabled = false; 419 420 return ret; 421 } 422 423 vmw_sou_add_active(dev_priv, sou, vfb); 424 425 connector->encoder = encoder; 426 encoder->crtc = crtc; 427 crtc->mode = *mode; 428 crtc->primary->fb = fb; 429 crtc->x = set->x; 430 crtc->y = set->y; 431 crtc->enabled = true; 432 433 return 0; 434 } 435 436 /** 437 * Returns if this unit can be page flipped. 438 * Must be called with the mode_config mutex held. 439 */ 440 static bool vmw_sou_screen_object_flippable(struct vmw_private *dev_priv, 441 struct drm_crtc *crtc) 442 { 443 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 444 445 if (!sou->base.is_implicit) 446 return true; 447 448 if (dev_priv->sou_priv->num_implicit != 1) 449 return false; 450 451 return true; 452 } 453 454 /** 455 * Update the implicit fb to the current fb of this crtc. 456 * Must be called with the mode_config mutex held. 457 */ 458 static void vmw_sou_update_implicit_fb(struct vmw_private *dev_priv, 459 struct drm_crtc *crtc) 460 { 461 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 462 463 BUG_ON(!sou->base.is_implicit); 464 465 dev_priv->sou_priv->implicit_fb = 466 vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb); 467 } 468 469 static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc, 470 struct drm_framebuffer *fb, 471 struct drm_pending_vblank_event *event, 472 uint32_t flags) 473 { 474 struct vmw_private *dev_priv = vmw_priv(crtc->dev); 475 struct drm_framebuffer *old_fb = crtc->primary->fb; 476 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb); 477 struct vmw_fence_obj *fence = NULL; 478 struct drm_clip_rect clips; 479 int ret; 480 481 /* require ScreenObject support for page flipping */ 482 if (!dev_priv->sou_priv) 483 return -ENOSYS; 484 485 if (!vmw_sou_screen_object_flippable(dev_priv, crtc)) 486 return -EINVAL; 487 488 crtc->primary->fb = fb; 489 490 /* do a full screen dirty update */ 491 clips.x1 = clips.y1 = 0; 492 clips.x2 = fb->width; 493 clips.y2 = fb->height; 494 495 if (vfb->dmabuf) 496 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, vfb, 497 &clips, 1, 1, 498 true, &fence); 499 else 500 ret = vmw_kms_sou_do_surface_dirty(dev_priv, vfb, 501 &clips, NULL, NULL, 502 0, 0, 1, 1, &fence); 503 504 505 if (ret != 0) 506 goto out_no_fence; 507 if (!fence) { 508 ret = -EINVAL; 509 goto out_no_fence; 510 } 511 512 if (event) { 513 struct drm_file *file_priv = event->base.file_priv; 514 515 ret = vmw_event_fence_action_queue(file_priv, fence, 516 &event->base, 517 &event->event.tv_sec, 518 &event->event.tv_usec, 519 true); 520 } 521 522 /* 523 * No need to hold on to this now. The only cleanup 524 * we need to do if we fail is unref the fence. 525 */ 526 vmw_fence_obj_unreference(&fence); 527 528 if (vmw_crtc_to_du(crtc)->is_implicit) 529 vmw_sou_update_implicit_fb(dev_priv, crtc); 530 531 return ret; 532 533 out_no_fence: 534 crtc->primary->fb = old_fb; 535 return ret; 536 } 537 538 static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 539 .save = vmw_du_crtc_save, 540 .restore = vmw_du_crtc_restore, 541 .cursor_set2 = vmw_du_crtc_cursor_set2, 542 .cursor_move = vmw_du_crtc_cursor_move, 543 .gamma_set = vmw_du_crtc_gamma_set, 544 .destroy = vmw_sou_crtc_destroy, 545 .set_config = vmw_sou_crtc_set_config, 546 .page_flip = vmw_sou_crtc_page_flip, 547 }; 548 549 /* 550 * Screen Object Display Unit encoder functions 551 */ 552 553 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 554 { 555 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 556 } 557 558 static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 559 .destroy = vmw_sou_encoder_destroy, 560 }; 561 562 /* 563 * Screen Object Display Unit connector functions 564 */ 565 566 static void vmw_sou_connector_destroy(struct drm_connector *connector) 567 { 568 vmw_sou_destroy(vmw_connector_to_sou(connector)); 569 } 570 571 static struct drm_connector_funcs vmw_sou_connector_funcs = { 572 .dpms = vmw_du_connector_dpms, 573 .save = vmw_du_connector_save, 574 .restore = vmw_du_connector_restore, 575 .detect = vmw_du_connector_detect, 576 .fill_modes = vmw_du_connector_fill_modes, 577 .set_property = vmw_du_connector_set_property, 578 .destroy = vmw_sou_connector_destroy, 579 }; 580 581 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 582 { 583 struct vmw_screen_object_unit *sou; 584 struct drm_device *dev = dev_priv->dev; 585 struct drm_connector *connector; 586 struct drm_encoder *encoder; 587 struct drm_crtc *crtc; 588 589 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 590 if (!sou) 591 return -ENOMEM; 592 593 sou->base.unit = unit; 594 crtc = &sou->base.crtc; 595 encoder = &sou->base.encoder; 596 connector = &sou->base.connector; 597 598 sou->active_implicit = false; 599 600 sou->base.pref_active = (unit == 0); 601 sou->base.pref_width = dev_priv->initial_width; 602 sou->base.pref_height = dev_priv->initial_height; 603 sou->base.pref_mode = NULL; 604 sou->base.is_implicit = true; 605 606 drm_connector_init(dev, connector, &vmw_sou_connector_funcs, 607 DRM_MODE_CONNECTOR_VIRTUAL); 608 connector->status = vmw_du_connector_detect(connector, true); 609 610 drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, 611 DRM_MODE_ENCODER_VIRTUAL); 612 drm_mode_connector_attach_encoder(connector, encoder); 613 encoder->possible_crtcs = (1 << unit); 614 encoder->possible_clones = 0; 615 616 (void) drm_connector_register(connector); 617 618 drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); 619 620 drm_mode_crtc_set_gamma_size(crtc, 256); 621 622 drm_object_attach_property(&connector->base, 623 dev->mode_config.dirty_info_property, 624 1); 625 626 return 0; 627 } 628 629 int vmw_kms_sou_init_display(struct vmw_private *dev_priv) 630 { 631 struct drm_device *dev = dev_priv->dev; 632 int i, ret; 633 634 if (dev_priv->sou_priv) { 635 DRM_INFO("sou system already on\n"); 636 return -EINVAL; 637 } 638 639 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { 640 DRM_INFO("Not using screen objects," 641 " missing cap SCREEN_OBJECT_2\n"); 642 return -ENOSYS; 643 } 644 645 ret = -ENOMEM; 646 dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); 647 if (unlikely(!dev_priv->sou_priv)) 648 goto err_no_mem; 649 650 dev_priv->sou_priv->num_implicit = 0; 651 dev_priv->sou_priv->implicit_fb = NULL; 652 653 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 654 if (unlikely(ret != 0)) 655 goto err_free; 656 657 ret = drm_mode_create_dirty_info_property(dev); 658 if (unlikely(ret != 0)) 659 goto err_vblank_cleanup; 660 661 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 662 vmw_sou_init(dev_priv, i); 663 664 dev_priv->active_display_unit = vmw_du_screen_object; 665 666 DRM_INFO("Screen Objects Display Unit initialized\n"); 667 668 return 0; 669 670 err_vblank_cleanup: 671 drm_vblank_cleanup(dev); 672 err_free: 673 kfree(dev_priv->sou_priv); 674 dev_priv->sou_priv = NULL; 675 err_no_mem: 676 return ret; 677 } 678 679 int vmw_kms_sou_close_display(struct vmw_private *dev_priv) 680 { 681 struct drm_device *dev = dev_priv->dev; 682 683 if (!dev_priv->sou_priv) 684 return -ENOSYS; 685 686 drm_vblank_cleanup(dev); 687 688 kfree(dev_priv->sou_priv); 689 690 return 0; 691 } 692 693 static int do_dmabuf_define_gmrfb(struct vmw_private *dev_priv, 694 struct vmw_framebuffer *framebuffer) 695 { 696 struct vmw_dma_buffer *buf = 697 container_of(framebuffer, struct vmw_framebuffer_dmabuf, 698 base)->buffer; 699 int depth = framebuffer->base.depth; 700 struct { 701 uint32_t header; 702 SVGAFifoCmdDefineGMRFB body; 703 } *cmd; 704 705 /* Emulate RGBA support, contrary to svga_reg.h this is not 706 * supported by hosts. This is only a problem if we are reading 707 * this value later and expecting what we uploaded back. 708 */ 709 if (depth == 32) 710 depth = 24; 711 712 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 713 if (!cmd) { 714 DRM_ERROR("Out of fifo space for dirty framebuffer command.\n"); 715 return -ENOMEM; 716 } 717 718 cmd->header = SVGA_CMD_DEFINE_GMRFB; 719 cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel; 720 cmd->body.format.colorDepth = depth; 721 cmd->body.format.reserved = 0; 722 cmd->body.bytesPerLine = framebuffer->base.pitches[0]; 723 /* Buffer is reserved in vram or GMR */ 724 vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr); 725 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 726 727 return 0; 728 } 729 730 /** 731 * vmw_sou_surface_fifo_commit - Callback to fill in and submit a 732 * blit surface to screen command. 733 * 734 * @dirty: The closure structure. 735 * 736 * Fills in the missing fields in the command, and translates the cliprects 737 * to match the destination bounding box encoded. 738 */ 739 static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty) 740 { 741 struct vmw_kms_sou_surface_dirty *sdirty = 742 container_of(dirty, typeof(*sdirty), base); 743 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 744 s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x; 745 s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y; 746 size_t region_size = dirty->num_hits * sizeof(SVGASignedRect); 747 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 748 int i; 749 750 cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 751 cmd->header.size = sizeof(cmd->body) + region_size; 752 753 /* 754 * Use the destination bounding box to specify destination - and 755 * source bounding regions. 756 */ 757 cmd->body.destRect.left = sdirty->left; 758 cmd->body.destRect.right = sdirty->right; 759 cmd->body.destRect.top = sdirty->top; 760 cmd->body.destRect.bottom = sdirty->bottom; 761 762 cmd->body.srcRect.left = sdirty->left + trans_x; 763 cmd->body.srcRect.right = sdirty->right + trans_x; 764 cmd->body.srcRect.top = sdirty->top + trans_y; 765 cmd->body.srcRect.bottom = sdirty->bottom + trans_y; 766 767 cmd->body.srcImage.sid = sdirty->sid; 768 cmd->body.destScreenId = dirty->unit->unit; 769 770 /* Blits are relative to the destination rect. Translate. */ 771 for (i = 0; i < dirty->num_hits; ++i, ++blit) { 772 blit->left -= sdirty->left; 773 blit->right -= sdirty->left; 774 blit->top -= sdirty->top; 775 blit->bottom -= sdirty->top; 776 } 777 778 vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd)); 779 780 sdirty->left = sdirty->top = S32_MAX; 781 sdirty->right = sdirty->bottom = S32_MIN; 782 } 783 784 /** 785 * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect. 786 * 787 * @dirty: The closure structure 788 * 789 * Encodes a SVGASignedRect cliprect and updates the bounding box of the 790 * BLIT_SURFACE_TO_SCREEN command. 791 */ 792 static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty) 793 { 794 struct vmw_kms_sou_surface_dirty *sdirty = 795 container_of(dirty, typeof(*sdirty), base); 796 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 797 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 798 799 /* Destination rect. */ 800 blit += dirty->num_hits; 801 blit->left = dirty->unit_x1; 802 blit->top = dirty->unit_y1; 803 blit->right = dirty->unit_x2; 804 blit->bottom = dirty->unit_y2; 805 806 /* Destination bounding box */ 807 sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1); 808 sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1); 809 sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2); 810 sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2); 811 812 dirty->num_hits++; 813 } 814 815 /** 816 * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer 817 * 818 * @dev_priv: Pointer to the device private structure. 819 * @framebuffer: Pointer to the surface-buffer backed framebuffer. 820 * @clips: Array of clip rects. Either @clips or @vclips must be NULL. 821 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 822 * be NULL. 823 * @srf: Pointer to surface to blit from. If NULL, the surface attached 824 * to @framebuffer will be used. 825 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates. 826 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates. 827 * @num_clips: Number of clip rects in @clips. 828 * @inc: Increment to use when looping over @clips. 829 * @out_fence: If non-NULL, will return a ref-counted pointer to a 830 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 831 * case the device has already synchronized. 832 * 833 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 834 * interrupted. 835 */ 836 int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv, 837 struct vmw_framebuffer *framebuffer, 838 struct drm_clip_rect *clips, 839 struct drm_vmw_rect *vclips, 840 struct vmw_resource *srf, 841 s32 dest_x, 842 s32 dest_y, 843 unsigned num_clips, int inc, 844 struct vmw_fence_obj **out_fence) 845 { 846 struct vmw_framebuffer_surface *vfbs = 847 container_of(framebuffer, typeof(*vfbs), base); 848 struct vmw_kms_sou_surface_dirty sdirty; 849 struct vmw_validation_ctx ctx; 850 int ret; 851 852 if (!srf) 853 srf = &vfbs->surface->res; 854 855 ret = vmw_kms_helper_resource_prepare(srf, true, &ctx); 856 if (ret) 857 return ret; 858 859 sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit; 860 sdirty.base.clip = vmw_sou_surface_clip; 861 sdirty.base.dev_priv = dev_priv; 862 sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) + 863 sizeof(SVGASignedRect) * num_clips; 864 865 sdirty.sid = srf->id; 866 sdirty.left = sdirty.top = S32_MAX; 867 sdirty.right = sdirty.bottom = S32_MIN; 868 sdirty.dst_x = dest_x; 869 sdirty.dst_y = dest_y; 870 871 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 872 dest_x, dest_y, num_clips, inc, 873 &sdirty.base); 874 vmw_kms_helper_resource_finish(&ctx, out_fence); 875 876 return ret; 877 } 878 879 /** 880 * vmw_sou_dmabuf_fifo_commit - Callback to submit a set of readback clips. 881 * 882 * @dirty: The closure structure. 883 * 884 * Commits a previously built command buffer of readback clips. 885 */ 886 static void vmw_sou_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty) 887 { 888 vmw_fifo_commit(dirty->dev_priv, 889 sizeof(struct vmw_kms_sou_dmabuf_blit) * 890 dirty->num_hits); 891 } 892 893 /** 894 * vmw_sou_dmabuf_clip - Callback to encode a readback cliprect. 895 * 896 * @dirty: The closure structure 897 * 898 * Encodes a BLIT_GMRFB_TO_SCREEN cliprect. 899 */ 900 static void vmw_sou_dmabuf_clip(struct vmw_kms_dirty *dirty) 901 { 902 struct vmw_kms_sou_dmabuf_blit *blit = dirty->cmd; 903 904 blit += dirty->num_hits; 905 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 906 blit->body.destScreenId = dirty->unit->unit; 907 blit->body.srcOrigin.x = dirty->fb_x; 908 blit->body.srcOrigin.y = dirty->fb_y; 909 blit->body.destRect.left = dirty->unit_x1; 910 blit->body.destRect.top = dirty->unit_y1; 911 blit->body.destRect.right = dirty->unit_x2; 912 blit->body.destRect.bottom = dirty->unit_y2; 913 dirty->num_hits++; 914 } 915 916 /** 917 * vmw_kms_do_dmabuf_dirty - Dirty part of a dma-buffer backed framebuffer 918 * 919 * @dev_priv: Pointer to the device private structure. 920 * @framebuffer: Pointer to the dma-buffer backed framebuffer. 921 * @clips: Array of clip rects. 922 * @num_clips: Number of clip rects in @clips. 923 * @increment: Increment to use when looping over @clips. 924 * @interruptible: Whether to perform waits interruptible if possible. 925 * @out_fence: If non-NULL, will return a ref-counted pointer to a 926 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 927 * case the device has already synchronized. 928 * 929 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 930 * interrupted. 931 */ 932 int vmw_kms_sou_do_dmabuf_dirty(struct vmw_private *dev_priv, 933 struct vmw_framebuffer *framebuffer, 934 struct drm_clip_rect *clips, 935 unsigned num_clips, int increment, 936 bool interruptible, 937 struct vmw_fence_obj **out_fence) 938 { 939 struct vmw_dma_buffer *buf = 940 container_of(framebuffer, struct vmw_framebuffer_dmabuf, 941 base)->buffer; 942 struct vmw_kms_dirty dirty; 943 int ret; 944 945 ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible, 946 false); 947 if (ret) 948 return ret; 949 950 ret = do_dmabuf_define_gmrfb(dev_priv, framebuffer); 951 if (unlikely(ret != 0)) 952 goto out_revert; 953 954 dirty.fifo_commit = vmw_sou_dmabuf_fifo_commit; 955 dirty.clip = vmw_sou_dmabuf_clip; 956 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_dmabuf_blit) * 957 num_clips; 958 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, NULL, 959 0, 0, num_clips, increment, &dirty); 960 vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL); 961 962 return ret; 963 964 out_revert: 965 vmw_kms_helper_buffer_revert(buf); 966 967 return ret; 968 } 969 970 971 /** 972 * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips. 973 * 974 * @dirty: The closure structure. 975 * 976 * Commits a previously built command buffer of readback clips. 977 */ 978 static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty) 979 { 980 vmw_fifo_commit(dirty->dev_priv, 981 sizeof(struct vmw_kms_sou_readback_blit) * 982 dirty->num_hits); 983 } 984 985 /** 986 * vmw_sou_readback_clip - Callback to encode a readback cliprect. 987 * 988 * @dirty: The closure structure 989 * 990 * Encodes a BLIT_SCREEN_TO_GMRFB cliprect. 991 */ 992 static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty) 993 { 994 struct vmw_kms_sou_readback_blit *blit = dirty->cmd; 995 996 blit += dirty->num_hits; 997 blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB; 998 blit->body.srcScreenId = dirty->unit->unit; 999 blit->body.destOrigin.x = dirty->fb_x; 1000 blit->body.destOrigin.y = dirty->fb_y; 1001 blit->body.srcRect.left = dirty->unit_x1; 1002 blit->body.srcRect.top = dirty->unit_y1; 1003 blit->body.srcRect.right = dirty->unit_x2; 1004 blit->body.srcRect.bottom = dirty->unit_y2; 1005 dirty->num_hits++; 1006 } 1007 1008 /** 1009 * vmw_kms_sou_readback - Perform a readback from the screen object system to 1010 * a dma-buffer backed framebuffer. 1011 * 1012 * @dev_priv: Pointer to the device private structure. 1013 * @file_priv: Pointer to a struct drm_file identifying the caller. 1014 * Must be set to NULL if @user_fence_rep is NULL. 1015 * @vfb: Pointer to the dma-buffer backed framebuffer. 1016 * @user_fence_rep: User-space provided structure for fence information. 1017 * Must be set to non-NULL if @file_priv is non-NULL. 1018 * @vclips: Array of clip rects. 1019 * @num_clips: Number of clip rects in @vclips. 1020 * 1021 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1022 * interrupted. 1023 */ 1024 int vmw_kms_sou_readback(struct vmw_private *dev_priv, 1025 struct drm_file *file_priv, 1026 struct vmw_framebuffer *vfb, 1027 struct drm_vmw_fence_rep __user *user_fence_rep, 1028 struct drm_vmw_rect *vclips, 1029 uint32_t num_clips) 1030 { 1031 struct vmw_dma_buffer *buf = 1032 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer; 1033 struct vmw_kms_dirty dirty; 1034 int ret; 1035 1036 ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false); 1037 if (ret) 1038 return ret; 1039 1040 ret = do_dmabuf_define_gmrfb(dev_priv, vfb); 1041 if (unlikely(ret != 0)) 1042 goto out_revert; 1043 1044 dirty.fifo_commit = vmw_sou_readback_fifo_commit; 1045 dirty.clip = vmw_sou_readback_clip; 1046 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) * 1047 num_clips; 1048 ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips, 1049 0, 0, num_clips, 1, &dirty); 1050 vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL, 1051 user_fence_rep); 1052 1053 return ret; 1054 1055 out_revert: 1056 vmw_kms_helper_buffer_revert(buf); 1057 1058 return ret; 1059 } 1060