1// SPDX-License-Identifier: GPL-2.0 OR MIT 2/************************************************************************** 3 * 4 * Copyright 2011-2023 VMware, Inc., Palo Alto, CA., USA 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "vmwgfx_bo.h" 29#include "vmwgfx_kms.h" 30 31#include <drm/drm_atomic.h> 32#include <drm/drm_atomic_helper.h> 33#include <drm/drm_damage_helper.h> 34#include <drm/drm_fourcc.h> 35 36#define vmw_crtc_to_sou(x) \ 37 container_of(x, struct vmw_screen_object_unit, base.crtc) 38#define vmw_encoder_to_sou(x) \ 39 container_of(x, struct vmw_screen_object_unit, base.encoder) 40#define vmw_connector_to_sou(x) \ 41 container_of(x, struct vmw_screen_object_unit, base.connector) 42 43/** 44 * struct vmw_kms_sou_surface_dirty - Closure structure for 45 * blit surface to screen command. 46 * @base: The base type we derive from. Used by vmw_kms_helper_dirty(). 47 * @left: Left side of bounding box. 48 * @right: Right side of bounding box. 49 * @top: Top side of bounding box. 50 * @bottom: Bottom side of bounding box. 51 * @dst_x: Difference between source clip rects and framebuffer coordinates. 52 * @dst_y: Difference between source clip rects and framebuffer coordinates. 53 * @sid: Surface id of surface to copy from. 54 */ 55struct vmw_kms_sou_surface_dirty { 56 struct vmw_kms_dirty base; 57 s32 left, right, top, bottom; 58 s32 dst_x, dst_y; 59 u32 sid; 60}; 61 62/* 63 * SVGA commands that are used by this code. Please see the device headers 64 * for explanation. 65 */ 66struct vmw_kms_sou_readback_blit { 67 uint32 header; 68 SVGAFifoCmdBlitScreenToGMRFB body; 69}; 70 71struct vmw_kms_sou_bo_blit { 72 uint32 header; 73 SVGAFifoCmdBlitGMRFBToScreen body; 74}; 75 76struct vmw_kms_sou_dirty_cmd { 77 SVGA3dCmdHeader header; 78 SVGA3dCmdBlitSurfaceToScreen body; 79}; 80 81struct vmw_kms_sou_define_gmrfb { 82 uint32_t header; 83 SVGAFifoCmdDefineGMRFB body; 84}; 85 86/* 87 * Display unit using screen objects. 88 */ 89struct vmw_screen_object_unit { 90 struct vmw_display_unit base; 91 92 unsigned long buffer_size; /**< Size of allocated buffer */ 93 struct vmw_bo *buffer; /**< Backing store buffer */ 94 95 bool defined; 96}; 97 98static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) 99{ 100 vmw_du_cleanup(&sou->base); 101 kfree(sou); 102} 103 104 105/* 106 * Screen Object Display Unit CRTC functions 107 */ 108 109static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) 110{ 111 vmw_sou_destroy(vmw_crtc_to_sou(crtc)); 112} 113 114/* 115 * Send the fifo command to create a screen. 116 */ 117static int vmw_sou_fifo_create(struct vmw_private *dev_priv, 118 struct vmw_screen_object_unit *sou, 119 int x, int y, 120 struct drm_display_mode *mode) 121{ 122 size_t fifo_size; 123 124 struct { 125 struct { 126 uint32_t cmdType; 127 } header; 128 SVGAScreenObject obj; 129 } *cmd; 130 131 BUG_ON(!sou->buffer); 132 133 fifo_size = sizeof(*cmd); 134 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 135 if (unlikely(cmd == NULL)) 136 return -ENOMEM; 137 138 memset(cmd, 0, fifo_size); 139 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; 140 cmd->obj.structSize = sizeof(SVGAScreenObject); 141 cmd->obj.id = sou->base.unit; 142 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | 143 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); 144 cmd->obj.size.width = mode->hdisplay; 145 cmd->obj.size.height = mode->vdisplay; 146 cmd->obj.root.x = x; 147 cmd->obj.root.y = y; 148 sou->base.set_gui_x = cmd->obj.root.x; 149 sou->base.set_gui_y = cmd->obj.root.y; 150 151 /* Ok to assume that buffer is pinned in vram */ 152 vmw_bo_get_guest_ptr(&sou->buffer->tbo, &cmd->obj.backingStore.ptr); 153 cmd->obj.backingStore.pitch = mode->hdisplay * 4; 154 155 vmw_cmd_commit(dev_priv, fifo_size); 156 157 sou->defined = true; 158 159 return 0; 160} 161 162/* 163 * Send the fifo command to destroy a screen. 164 */ 165static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, 166 struct vmw_screen_object_unit *sou) 167{ 168 size_t fifo_size; 169 int ret; 170 171 struct { 172 struct { 173 uint32_t cmdType; 174 } header; 175 SVGAFifoCmdDestroyScreen body; 176 } *cmd; 177 178 /* no need to do anything */ 179 if (unlikely(!sou->defined)) 180 return 0; 181 182 fifo_size = sizeof(*cmd); 183 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 184 if (unlikely(cmd == NULL)) 185 return -ENOMEM; 186 187 memset(cmd, 0, fifo_size); 188 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; 189 cmd->body.screenId = sou->base.unit; 190 191 vmw_cmd_commit(dev_priv, fifo_size); 192 193 /* Force sync */ 194 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 195 if (unlikely(ret != 0)) 196 DRM_ERROR("Failed to sync with HW"); 197 else 198 sou->defined = false; 199 200 return ret; 201} 202 203/** 204 * vmw_sou_crtc_mode_set_nofb - Create new screen 205 * 206 * @crtc: CRTC associated with the new screen 207 * 208 * This function creates/destroys a screen. This function cannot fail, so if 209 * somehow we run into a failure, just do the best we can to get out. 210 */ 211static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc) 212{ 213 struct vmw_private *dev_priv; 214 struct vmw_screen_object_unit *sou; 215 struct vmw_framebuffer *vfb; 216 struct drm_framebuffer *fb; 217 struct drm_plane_state *ps; 218 struct vmw_plane_state *vps; 219 int ret; 220 221 sou = vmw_crtc_to_sou(crtc); 222 dev_priv = vmw_priv(crtc->dev); 223 ps = crtc->primary->state; 224 fb = ps->fb; 225 vps = vmw_plane_state_to_vps(ps); 226 227 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 228 229 if (sou->defined) { 230 ret = vmw_sou_fifo_destroy(dev_priv, sou); 231 if (ret) { 232 DRM_ERROR("Failed to destroy Screen Object\n"); 233 return; 234 } 235 } 236 237 if (vfb) { 238 struct drm_connector_state *conn_state; 239 struct vmw_connector_state *vmw_conn_state; 240 int x, y; 241 242 sou->buffer = vps->bo; 243 sou->buffer_size = vps->bo_size; 244 245 conn_state = sou->base.connector.state; 246 vmw_conn_state = vmw_connector_state_to_vcs(conn_state); 247 248 x = vmw_conn_state->gui_x; 249 y = vmw_conn_state->gui_y; 250 251 ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode); 252 if (ret) 253 DRM_ERROR("Failed to define Screen Object %dx%d\n", 254 crtc->x, crtc->y); 255 256 } else { 257 sou->buffer = NULL; 258 sou->buffer_size = 0; 259 } 260} 261 262/** 263 * vmw_sou_crtc_helper_prepare - Noop 264 * 265 * @crtc: CRTC associated with the new screen 266 * 267 * Prepares the CRTC for a mode set, but we don't need to do anything here. 268 */ 269static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc) 270{ 271} 272 273/** 274 * vmw_sou_crtc_atomic_enable - Noop 275 * 276 * @crtc: CRTC associated with the new screen 277 * @state: Unused 278 * 279 * This is called after a mode set has been completed. 280 */ 281static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc, 282 struct drm_atomic_state *state) 283{ 284} 285 286/** 287 * vmw_sou_crtc_atomic_disable - Turns off CRTC 288 * 289 * @crtc: CRTC to be turned off 290 * @state: Unused 291 */ 292static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc, 293 struct drm_atomic_state *state) 294{ 295 struct vmw_private *dev_priv; 296 struct vmw_screen_object_unit *sou; 297 int ret; 298 299 300 if (!crtc) { 301 DRM_ERROR("CRTC is NULL\n"); 302 return; 303 } 304 305 sou = vmw_crtc_to_sou(crtc); 306 dev_priv = vmw_priv(crtc->dev); 307 308 if (sou->defined) { 309 ret = vmw_sou_fifo_destroy(dev_priv, sou); 310 if (ret) 311 DRM_ERROR("Failed to destroy Screen Object\n"); 312 } 313} 314 315static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 316 .gamma_set = vmw_du_crtc_gamma_set, 317 .destroy = vmw_sou_crtc_destroy, 318 .reset = vmw_du_crtc_reset, 319 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 320 .atomic_destroy_state = vmw_du_crtc_destroy_state, 321 .set_config = drm_atomic_helper_set_config, 322 .page_flip = drm_atomic_helper_page_flip, 323}; 324 325/* 326 * Screen Object Display Unit encoder functions 327 */ 328 329static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 330{ 331 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 332} 333 334static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 335 .destroy = vmw_sou_encoder_destroy, 336}; 337 338/* 339 * Screen Object Display Unit connector functions 340 */ 341 342static void vmw_sou_connector_destroy(struct drm_connector *connector) 343{ 344 vmw_sou_destroy(vmw_connector_to_sou(connector)); 345} 346 347static const struct drm_connector_funcs vmw_sou_connector_funcs = { 348 .dpms = vmw_du_connector_dpms, 349 .detect = vmw_du_connector_detect, 350 .fill_modes = drm_helper_probe_single_connector_modes, 351 .destroy = vmw_sou_connector_destroy, 352 .reset = vmw_du_connector_reset, 353 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 354 .atomic_destroy_state = vmw_du_connector_destroy_state, 355}; 356 357 358static const struct 359drm_connector_helper_funcs vmw_sou_connector_helper_funcs = { 360 .get_modes = vmw_connector_get_modes, 361 .mode_valid = vmw_connector_mode_valid 362}; 363 364 365 366/* 367 * Screen Object Display Plane Functions 368 */ 369 370/** 371 * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer 372 * 373 * @plane: display plane 374 * @old_state: Contains the FB to clean up 375 * 376 * Unpins the display surface 377 * 378 * Returns 0 on success 379 */ 380static void 381vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane, 382 struct drm_plane_state *old_state) 383{ 384 struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state); 385 struct drm_crtc *crtc = plane->state->crtc ? 386 plane->state->crtc : old_state->crtc; 387 388 if (vps->bo) 389 vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false); 390 vmw_bo_unreference(&vps->bo); 391 vps->bo_size = 0; 392 393 vmw_du_plane_cleanup_fb(plane, old_state); 394} 395 396 397/** 398 * vmw_sou_primary_plane_prepare_fb - allocate backing buffer 399 * 400 * @plane: display plane 401 * @new_state: info on the new plane state, including the FB 402 * 403 * The SOU backing buffer is our equivalent of the display plane. 404 * 405 * Returns 0 on success 406 */ 407static int 408vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane, 409 struct drm_plane_state *new_state) 410{ 411 struct drm_framebuffer *new_fb = new_state->fb; 412 struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc; 413 struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state); 414 struct vmw_private *dev_priv; 415 int ret; 416 struct vmw_bo_params bo_params = { 417 .domain = VMW_BO_DOMAIN_VRAM, 418 .busy_domain = VMW_BO_DOMAIN_VRAM, 419 .bo_type = ttm_bo_type_device, 420 .pin = true 421 }; 422 423 if (!new_fb) { 424 vmw_bo_unreference(&vps->bo); 425 vps->bo_size = 0; 426 427 return 0; 428 } 429 430 bo_params.size = new_state->crtc_w * new_state->crtc_h * 4; 431 dev_priv = vmw_priv(crtc->dev); 432 433 if (vps->bo) { 434 if (vps->bo_size == bo_params.size) { 435 /* 436 * Note that this might temporarily up the pin-count 437 * to 2, until cleanup_fb() is called. 438 */ 439 return vmw_bo_pin_in_vram(dev_priv, vps->bo, 440 true); 441 } 442 443 vmw_bo_unreference(&vps->bo); 444 vps->bo_size = 0; 445 } 446 447 vmw_svga_enable(dev_priv); 448 449 /* After we have alloced the backing store might not be able to 450 * resume the overlays, this is preferred to failing to alloc. 451 */ 452 vmw_overlay_pause_all(dev_priv); 453 ret = vmw_bo_create(dev_priv, &bo_params, &vps->bo); 454 vmw_overlay_resume_all(dev_priv); 455 if (ret) 456 return ret; 457 458 vps->bo_size = bo_params.size; 459 460 /* 461 * TTM already thinks the buffer is pinned, but make sure the 462 * pin_count is upped. 463 */ 464 return vmw_bo_pin_in_vram(dev_priv, vps->bo, true); 465} 466 467static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update, 468 uint32_t num_hits) 469{ 470 return sizeof(struct vmw_kms_sou_define_gmrfb) + 471 sizeof(struct vmw_kms_sou_bo_blit) * num_hits; 472} 473 474static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update, 475 void *cmd) 476{ 477 struct vmw_framebuffer_bo *vfbbo = 478 container_of(update->vfb, typeof(*vfbbo), base); 479 struct vmw_kms_sou_define_gmrfb *gmr = cmd; 480 int depth = update->vfb->base.format->depth; 481 482 /* Emulate RGBA support, contrary to svga_reg.h this is not 483 * supported by hosts. This is only a problem if we are reading 484 * this value later and expecting what we uploaded back. 485 */ 486 if (depth == 32) 487 depth = 24; 488 489 gmr->header = SVGA_CMD_DEFINE_GMRFB; 490 491 gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8; 492 gmr->body.format.colorDepth = depth; 493 gmr->body.format.reserved = 0; 494 gmr->body.bytesPerLine = update->vfb->base.pitches[0]; 495 vmw_bo_get_guest_ptr(&vfbbo->buffer->tbo, &gmr->body.ptr); 496 497 return sizeof(*gmr); 498} 499 500static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane *update, 501 void *cmd, struct drm_rect *clip, 502 uint32_t fb_x, uint32_t fb_y) 503{ 504 struct vmw_kms_sou_bo_blit *blit = cmd; 505 506 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 507 blit->body.destScreenId = update->du->unit; 508 blit->body.srcOrigin.x = fb_x; 509 blit->body.srcOrigin.y = fb_y; 510 blit->body.destRect.left = clip->x1; 511 blit->body.destRect.top = clip->y1; 512 blit->body.destRect.right = clip->x2; 513 blit->body.destRect.bottom = clip->y2; 514 515 return sizeof(*blit); 516} 517 518static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane *update, 519 void *cmd, struct drm_rect *bb) 520{ 521 return 0; 522} 523 524/** 525 * vmw_sou_plane_update_bo - Update display unit for bo backed fb. 526 * @dev_priv: Device private. 527 * @plane: Plane state. 528 * @old_state: Old plane state. 529 * @vfb: Framebuffer which is blitted to display unit. 530 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 531 * The returned fence pointer may be NULL in which case the device 532 * has already synchronized. 533 * 534 * Return: 0 on success or a negative error code on failure. 535 */ 536static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv, 537 struct drm_plane *plane, 538 struct drm_plane_state *old_state, 539 struct vmw_framebuffer *vfb, 540 struct vmw_fence_obj **out_fence) 541{ 542 struct vmw_du_update_plane_buffer bo_update; 543 544 memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer)); 545 bo_update.base.plane = plane; 546 bo_update.base.old_state = old_state; 547 bo_update.base.dev_priv = dev_priv; 548 bo_update.base.du = vmw_crtc_to_du(plane->state->crtc); 549 bo_update.base.vfb = vfb; 550 bo_update.base.out_fence = out_fence; 551 bo_update.base.mutex = NULL; 552 bo_update.base.intr = true; 553 554 bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size; 555 bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb; 556 bo_update.base.clip = vmw_sou_bo_populate_clip; 557 bo_update.base.post_clip = vmw_stud_bo_post_clip; 558 559 return vmw_du_helper_plane_update(&bo_update.base); 560} 561 562static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update, 563 uint32_t num_hits) 564{ 565 return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) * 566 num_hits; 567} 568 569static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update, 570 void *cmd) 571{ 572 struct vmw_du_update_plane_surface *srf_update; 573 574 srf_update = container_of(update, typeof(*srf_update), base); 575 576 /* 577 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that 578 * its bounding box is filled before iterating over all the clips. So 579 * store the FIFO start address and revisit to fill the details. 580 */ 581 srf_update->cmd_start = cmd; 582 583 return 0; 584} 585 586static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update, 587 void *cmd, uint32_t num_hits) 588{ 589 struct vmw_kms_sou_dirty_cmd *blit = cmd; 590 struct vmw_framebuffer_surface *vfbs; 591 592 vfbs = container_of(update->vfb, typeof(*vfbs), base); 593 594 blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 595 blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) * 596 num_hits; 597 598 blit->body.srcImage.sid = vfbs->surface->res.id; 599 blit->body.destScreenId = update->du->unit; 600 601 /* Update the source and destination bounding box later in post_clip */ 602 blit->body.srcRect.left = 0; 603 blit->body.srcRect.top = 0; 604 blit->body.srcRect.right = 0; 605 blit->body.srcRect.bottom = 0; 606 607 blit->body.destRect.left = 0; 608 blit->body.destRect.top = 0; 609 blit->body.destRect.right = 0; 610 blit->body.destRect.bottom = 0; 611 612 return sizeof(*blit); 613} 614 615static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update, 616 void *cmd, struct drm_rect *clip, 617 uint32_t src_x, uint32_t src_y) 618{ 619 SVGASignedRect *rect = cmd; 620 621 /* 622 * rects are relative to dest bounding box rect on screen object, so 623 * translate to it later in post_clip 624 */ 625 rect->left = clip->x1; 626 rect->top = clip->y1; 627 rect->right = clip->x2; 628 rect->bottom = clip->y2; 629 630 return sizeof(*rect); 631} 632 633static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update, 634 void *cmd, struct drm_rect *bb) 635{ 636 struct vmw_du_update_plane_surface *srf_update; 637 struct drm_plane_state *state = update->plane->state; 638 struct drm_rect src_bb; 639 struct vmw_kms_sou_dirty_cmd *blit; 640 SVGASignedRect *rect; 641 uint32_t num_hits; 642 int translate_src_x; 643 int translate_src_y; 644 int i; 645 646 srf_update = container_of(update, typeof(*srf_update), base); 647 648 blit = srf_update->cmd_start; 649 rect = (SVGASignedRect *)&blit[1]; 650 651 num_hits = (blit->header.size - sizeof(blit->body))/ 652 sizeof(SVGASignedRect); 653 654 src_bb = *bb; 655 656 /* To translate bb back to fb src coord */ 657 translate_src_x = (state->src_x >> 16) - state->crtc_x; 658 translate_src_y = (state->src_y >> 16) - state->crtc_y; 659 660 drm_rect_translate(&src_bb, translate_src_x, translate_src_y); 661 662 blit->body.srcRect.left = src_bb.x1; 663 blit->body.srcRect.top = src_bb.y1; 664 blit->body.srcRect.right = src_bb.x2; 665 blit->body.srcRect.bottom = src_bb.y2; 666 667 blit->body.destRect.left = bb->x1; 668 blit->body.destRect.top = bb->y1; 669 blit->body.destRect.right = bb->x2; 670 blit->body.destRect.bottom = bb->y2; 671 672 /* rects are relative to dest bb rect */ 673 for (i = 0; i < num_hits; i++) { 674 rect->left -= bb->x1; 675 rect->top -= bb->y1; 676 rect->right -= bb->x1; 677 rect->bottom -= bb->y1; 678 rect++; 679 } 680 681 return 0; 682} 683 684/** 685 * vmw_sou_plane_update_surface - Update display unit for surface backed fb. 686 * @dev_priv: Device private. 687 * @plane: Plane state. 688 * @old_state: Old plane state. 689 * @vfb: Framebuffer which is blitted to display unit 690 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 691 * The returned fence pointer may be NULL in which case the device 692 * has already synchronized. 693 * 694 * Return: 0 on success or a negative error code on failure. 695 */ 696static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv, 697 struct drm_plane *plane, 698 struct drm_plane_state *old_state, 699 struct vmw_framebuffer *vfb, 700 struct vmw_fence_obj **out_fence) 701{ 702 struct vmw_du_update_plane_surface srf_update; 703 704 memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface)); 705 srf_update.base.plane = plane; 706 srf_update.base.old_state = old_state; 707 srf_update.base.dev_priv = dev_priv; 708 srf_update.base.du = vmw_crtc_to_du(plane->state->crtc); 709 srf_update.base.vfb = vfb; 710 srf_update.base.out_fence = out_fence; 711 srf_update.base.mutex = &dev_priv->cmdbuf_mutex; 712 srf_update.base.intr = true; 713 714 srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size; 715 srf_update.base.post_prepare = vmw_sou_surface_post_prepare; 716 srf_update.base.pre_clip = vmw_sou_surface_pre_clip; 717 srf_update.base.clip = vmw_sou_surface_clip_rect; 718 srf_update.base.post_clip = vmw_sou_surface_post_clip; 719 720 return vmw_du_helper_plane_update(&srf_update.base); 721} 722 723static void 724vmw_sou_primary_plane_atomic_update(struct drm_plane *plane, 725 struct drm_atomic_state *state) 726{ 727 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); 728 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); 729 struct drm_crtc *crtc = new_state->crtc; 730 struct vmw_fence_obj *fence = NULL; 731 int ret; 732 733 /* In case of device error, maintain consistent atomic state */ 734 if (crtc && new_state->fb) { 735 struct vmw_private *dev_priv = vmw_priv(crtc->dev); 736 struct vmw_framebuffer *vfb = 737 vmw_framebuffer_to_vfb(new_state->fb); 738 739 if (vfb->bo) 740 ret = vmw_sou_plane_update_bo(dev_priv, plane, 741 old_state, vfb, &fence); 742 else 743 ret = vmw_sou_plane_update_surface(dev_priv, plane, 744 old_state, vfb, 745 &fence); 746 if (ret != 0) 747 DRM_ERROR("Failed to update screen.\n"); 748 } else { 749 /* Do nothing when fb and crtc is NULL (blank crtc) */ 750 return; 751 } 752 753 if (fence) 754 vmw_fence_obj_unreference(&fence); 755} 756 757 758static const struct drm_plane_funcs vmw_sou_plane_funcs = { 759 .update_plane = drm_atomic_helper_update_plane, 760 .disable_plane = drm_atomic_helper_disable_plane, 761 .destroy = vmw_du_primary_plane_destroy, 762 .reset = vmw_du_plane_reset, 763 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 764 .atomic_destroy_state = vmw_du_plane_destroy_state, 765}; 766 767static const struct drm_plane_funcs vmw_sou_cursor_funcs = { 768 .update_plane = drm_atomic_helper_update_plane, 769 .disable_plane = drm_atomic_helper_disable_plane, 770 .destroy = vmw_du_cursor_plane_destroy, 771 .reset = vmw_du_plane_reset, 772 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 773 .atomic_destroy_state = vmw_du_plane_destroy_state, 774}; 775 776/* 777 * Atomic Helpers 778 */ 779static const struct 780drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = { 781 .atomic_check = vmw_du_cursor_plane_atomic_check, 782 .atomic_update = vmw_du_cursor_plane_atomic_update, 783 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 784 .cleanup_fb = vmw_du_cursor_plane_cleanup_fb, 785}; 786 787static const struct 788drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = { 789 .atomic_check = vmw_du_primary_plane_atomic_check, 790 .atomic_update = vmw_sou_primary_plane_atomic_update, 791 .prepare_fb = vmw_sou_primary_plane_prepare_fb, 792 .cleanup_fb = vmw_sou_primary_plane_cleanup_fb, 793}; 794 795static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = { 796 .prepare = vmw_sou_crtc_helper_prepare, 797 .mode_set_nofb = vmw_sou_crtc_mode_set_nofb, 798 .atomic_check = vmw_du_crtc_atomic_check, 799 .atomic_begin = vmw_du_crtc_atomic_begin, 800 .atomic_flush = vmw_du_crtc_atomic_flush, 801 .atomic_enable = vmw_sou_crtc_atomic_enable, 802 .atomic_disable = vmw_sou_crtc_atomic_disable, 803}; 804 805 806static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 807{ 808 struct vmw_screen_object_unit *sou; 809 struct drm_device *dev = &dev_priv->drm; 810 struct drm_connector *connector; 811 struct drm_encoder *encoder; 812 struct drm_plane *primary; 813 struct vmw_cursor_plane *cursor; 814 struct drm_crtc *crtc; 815 int ret; 816 817 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 818 if (!sou) 819 return -ENOMEM; 820 821 sou->base.unit = unit; 822 crtc = &sou->base.crtc; 823 encoder = &sou->base.encoder; 824 connector = &sou->base.connector; 825 primary = &sou->base.primary; 826 cursor = &sou->base.cursor; 827 828 sou->base.pref_active = (unit == 0); 829 sou->base.pref_width = dev_priv->initial_width; 830 sou->base.pref_height = dev_priv->initial_height; 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 913err_free_unregister: 914 drm_connector_unregister(connector); 915err_free_encoder: 916 drm_encoder_cleanup(encoder); 917err_free_connector: 918 drm_connector_cleanup(connector); 919err_free: 920 kfree(sou); 921 return ret; 922} 923 924int 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 947static int do_bo_define_gmrfb(struct vmw_private *dev_priv, 948 struct vmw_framebuffer *framebuffer) 949{ 950 struct vmw_bo *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->tbo, &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 */ 991static 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 */ 1049static 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 */ 1094int 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 1144out_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 */ 1156static 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 */ 1175static 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 */ 1210int 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_bo *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 vmw_bo_placement_set(buf, VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM, 1227 VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM); 1228 ret = vmw_validation_add_bo(&val_ctx, buf); 1229 if (ret) 1230 return ret; 1231 1232 ret = vmw_validation_prepare(&val_ctx, NULL, interruptible); 1233 if (ret) 1234 goto out_unref; 1235 1236 ret = do_bo_define_gmrfb(dev_priv, framebuffer); 1237 if (unlikely(ret != 0)) 1238 goto out_revert; 1239 1240 dirty.crtc = crtc; 1241 dirty.fifo_commit = vmw_sou_bo_fifo_commit; 1242 dirty.clip = vmw_sou_bo_clip; 1243 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) * 1244 num_clips; 1245 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1246 0, 0, num_clips, increment, &dirty); 1247 vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence, 1248 NULL); 1249 1250 return ret; 1251 1252out_revert: 1253 vmw_validation_revert(&val_ctx); 1254out_unref: 1255 vmw_validation_unref_lists(&val_ctx); 1256 1257 return ret; 1258} 1259 1260 1261/** 1262 * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips. 1263 * 1264 * @dirty: The closure structure. 1265 * 1266 * Commits a previously built command buffer of readback clips. 1267 */ 1268static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty) 1269{ 1270 if (!dirty->num_hits) { 1271 vmw_cmd_commit(dirty->dev_priv, 0); 1272 return; 1273 } 1274 1275 vmw_cmd_commit(dirty->dev_priv, 1276 sizeof(struct vmw_kms_sou_readback_blit) * 1277 dirty->num_hits); 1278} 1279 1280/** 1281 * vmw_sou_readback_clip - Callback to encode a readback cliprect. 1282 * 1283 * @dirty: The closure structure 1284 * 1285 * Encodes a BLIT_SCREEN_TO_GMRFB cliprect. 1286 */ 1287static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty) 1288{ 1289 struct vmw_kms_sou_readback_blit *blit = dirty->cmd; 1290 1291 blit += dirty->num_hits; 1292 blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB; 1293 blit->body.srcScreenId = dirty->unit->unit; 1294 blit->body.destOrigin.x = dirty->fb_x; 1295 blit->body.destOrigin.y = dirty->fb_y; 1296 blit->body.srcRect.left = dirty->unit_x1; 1297 blit->body.srcRect.top = dirty->unit_y1; 1298 blit->body.srcRect.right = dirty->unit_x2; 1299 blit->body.srcRect.bottom = dirty->unit_y2; 1300 dirty->num_hits++; 1301} 1302 1303/** 1304 * vmw_kms_sou_readback - Perform a readback from the screen object system to 1305 * a buffer-object backed framebuffer. 1306 * 1307 * @dev_priv: Pointer to the device private structure. 1308 * @file_priv: Pointer to a struct drm_file identifying the caller. 1309 * Must be set to NULL if @user_fence_rep is NULL. 1310 * @vfb: Pointer to the buffer-object backed framebuffer. 1311 * @user_fence_rep: User-space provided structure for fence information. 1312 * Must be set to non-NULL if @file_priv is non-NULL. 1313 * @vclips: Array of clip rects. 1314 * @num_clips: Number of clip rects in @vclips. 1315 * @crtc: If crtc is passed, readback on that crtc only. 1316 * 1317 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1318 * interrupted. 1319 */ 1320int vmw_kms_sou_readback(struct vmw_private *dev_priv, 1321 struct drm_file *file_priv, 1322 struct vmw_framebuffer *vfb, 1323 struct drm_vmw_fence_rep __user *user_fence_rep, 1324 struct drm_vmw_rect *vclips, 1325 uint32_t num_clips, 1326 struct drm_crtc *crtc) 1327{ 1328 struct vmw_bo *buf = 1329 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer; 1330 struct vmw_kms_dirty dirty; 1331 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1332 int ret; 1333 1334 vmw_bo_placement_set(buf, VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM, 1335 VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM); 1336 ret = vmw_validation_add_bo(&val_ctx, buf); 1337 if (ret) 1338 return ret; 1339 1340 ret = vmw_validation_prepare(&val_ctx, NULL, true); 1341 if (ret) 1342 goto out_unref; 1343 1344 ret = do_bo_define_gmrfb(dev_priv, vfb); 1345 if (unlikely(ret != 0)) 1346 goto out_revert; 1347 1348 dirty.crtc = crtc; 1349 dirty.fifo_commit = vmw_sou_readback_fifo_commit; 1350 dirty.clip = vmw_sou_readback_clip; 1351 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) * 1352 num_clips; 1353 ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips, 1354 0, 0, num_clips, 1, &dirty); 1355 vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL, 1356 user_fence_rep); 1357 1358 return ret; 1359 1360out_revert: 1361 vmw_validation_revert(&val_ctx); 1362out_unref: 1363 vmw_validation_unref_lists(&val_ctx); 1364 1365 return ret; 1366} 1367