1/* $NetBSD: vmwgfx_scrn.c,v 1.3 2021/12/18 23:45:45 riastradh Exp $ */ 2 3// SPDX-License-Identifier: GPL-2.0 OR MIT 4/************************************************************************** 5 * 6 * Copyright 2011-2015 VMware, Inc., Palo Alto, CA., USA 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 1.3 2021/12/18 23:45:45 riastradh Exp $"); 32 33#include <drm/drm_atomic.h> 34#include <drm/drm_atomic_helper.h> 35#include <drm/drm_damage_helper.h> 36#include <drm/drm_fourcc.h> 37#include <drm/drm_plane_helper.h> 38#include <drm/drm_vblank.h> 39 40#include "vmwgfx_kms.h" 41 42#define vmw_crtc_to_sou(x) \ 43 container_of(x, struct vmw_screen_object_unit, base.crtc) 44#define vmw_encoder_to_sou(x) \ 45 container_of(x, struct vmw_screen_object_unit, base.encoder) 46#define vmw_connector_to_sou(x) \ 47 container_of(x, struct vmw_screen_object_unit, base.connector) 48 49/** 50 * struct vmw_kms_sou_surface_dirty - Closure structure for 51 * blit surface to screen command. 52 * @base: The base type we derive from. Used by vmw_kms_helper_dirty(). 53 * @left: Left side of bounding box. 54 * @right: Right side of bounding box. 55 * @top: Top side of bounding box. 56 * @bottom: Bottom side of bounding box. 57 * @dst_x: Difference between source clip rects and framebuffer coordinates. 58 * @dst_y: Difference between source clip rects and framebuffer coordinates. 59 * @sid: Surface id of surface to copy from. 60 */ 61struct vmw_kms_sou_surface_dirty { 62 struct vmw_kms_dirty base; 63 s32 left, right, top, bottom; 64 s32 dst_x, dst_y; 65 u32 sid; 66}; 67 68/* 69 * SVGA commands that are used by this code. Please see the device headers 70 * for explanation. 71 */ 72struct vmw_kms_sou_readback_blit { 73 uint32 header; 74 SVGAFifoCmdBlitScreenToGMRFB body; 75}; 76 77struct vmw_kms_sou_bo_blit { 78 uint32 header; 79 SVGAFifoCmdBlitGMRFBToScreen body; 80}; 81 82struct vmw_kms_sou_dirty_cmd { 83 SVGA3dCmdHeader header; 84 SVGA3dCmdBlitSurfaceToScreen body; 85}; 86 87struct vmw_kms_sou_define_gmrfb { 88 uint32_t header; 89 SVGAFifoCmdDefineGMRFB body; 90}; 91 92/** 93 * Display unit using screen objects. 94 */ 95struct vmw_screen_object_unit { 96 struct vmw_display_unit base; 97 98 unsigned long buffer_size; /**< Size of allocated buffer */ 99 struct vmw_buffer_object *buffer; /**< Backing store buffer */ 100 101 bool defined; 102}; 103 104static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) 105{ 106 vmw_du_cleanup(&sou->base); 107 kfree(sou); 108} 109 110 111/* 112 * Screen Object Display Unit CRTC functions 113 */ 114 115static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) 116{ 117 vmw_sou_destroy(vmw_crtc_to_sou(crtc)); 118} 119 120/** 121 * Send the fifo command to create a screen. 122 */ 123static int vmw_sou_fifo_create(struct vmw_private *dev_priv, 124 struct vmw_screen_object_unit *sou, 125 int x, int y, 126 struct drm_display_mode *mode) 127{ 128 size_t fifo_size; 129 130 struct { 131 struct { 132 uint32_t cmdType; 133 } header; 134 SVGAScreenObject obj; 135 } *cmd; 136 137 BUG_ON(!sou->buffer); 138 139 fifo_size = sizeof(*cmd); 140 cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size); 141 if (unlikely(cmd == NULL)) 142 return -ENOMEM; 143 144 memset(cmd, 0, fifo_size); 145 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; 146 cmd->obj.structSize = sizeof(SVGAScreenObject); 147 cmd->obj.id = sou->base.unit; 148 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | 149 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); 150 cmd->obj.size.width = mode->hdisplay; 151 cmd->obj.size.height = mode->vdisplay; 152 cmd->obj.root.x = x; 153 cmd->obj.root.y = y; 154 sou->base.set_gui_x = cmd->obj.root.x; 155 sou->base.set_gui_y = cmd->obj.root.y; 156 157 /* Ok to assume that buffer is pinned in vram */ 158 vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); 159 cmd->obj.backingStore.pitch = mode->hdisplay * 4; 160 161 vmw_fifo_commit(dev_priv, fifo_size); 162 163 sou->defined = true; 164 165 return 0; 166} 167 168/** 169 * Send the fifo command to destroy a screen. 170 */ 171static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, 172 struct vmw_screen_object_unit *sou) 173{ 174 size_t fifo_size; 175 int ret; 176 177 struct { 178 struct { 179 uint32_t cmdType; 180 } header; 181 SVGAFifoCmdDestroyScreen body; 182 } *cmd; 183 184 /* no need to do anything */ 185 if (unlikely(!sou->defined)) 186 return 0; 187 188 fifo_size = sizeof(*cmd); 189 cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size); 190 if (unlikely(cmd == NULL)) 191 return -ENOMEM; 192 193 memset(cmd, 0, fifo_size); 194 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; 195 cmd->body.screenId = sou->base.unit; 196 197 vmw_fifo_commit(dev_priv, fifo_size); 198 199 /* Force sync */ 200 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 201 if (unlikely(ret != 0)) 202 DRM_ERROR("Failed to sync with HW"); 203 else 204 sou->defined = false; 205 206 return ret; 207} 208 209/** 210 * vmw_sou_crtc_mode_set_nofb - Create new screen 211 * 212 * @crtc: CRTC associated with the new screen 213 * 214 * This function creates/destroys a screen. This function cannot fail, so if 215 * somehow we run into a failure, just do the best we can to get out. 216 */ 217static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc) 218{ 219 struct vmw_private *dev_priv; 220 struct vmw_screen_object_unit *sou; 221 struct vmw_framebuffer *vfb; 222 struct drm_framebuffer *fb; 223 struct drm_plane_state *ps; 224 struct vmw_plane_state *vps; 225 int ret; 226 227 sou = vmw_crtc_to_sou(crtc); 228 dev_priv = vmw_priv(crtc->dev); 229 ps = crtc->primary->state; 230 fb = ps->fb; 231 vps = vmw_plane_state_to_vps(ps); 232 233 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 234 235 if (sou->defined) { 236 ret = vmw_sou_fifo_destroy(dev_priv, sou); 237 if (ret) { 238 DRM_ERROR("Failed to destroy Screen Object\n"); 239 return; 240 } 241 } 242 243 if (vfb) { 244 struct drm_connector_state *conn_state; 245 struct vmw_connector_state *vmw_conn_state; 246 int x, y; 247 248 sou->buffer = vps->bo; 249 sou->buffer_size = vps->bo_size; 250 251 conn_state = sou->base.connector.state; 252 vmw_conn_state = vmw_connector_state_to_vcs(conn_state); 253 254 x = vmw_conn_state->gui_x; 255 y = vmw_conn_state->gui_y; 256 257 ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode); 258 if (ret) 259 DRM_ERROR("Failed to define Screen Object %dx%d\n", 260 crtc->x, crtc->y); 261 262 } else { 263 sou->buffer = NULL; 264 sou->buffer_size = 0; 265 } 266} 267 268/** 269 * vmw_sou_crtc_helper_prepare - Noop 270 * 271 * @crtc: CRTC associated with the new screen 272 * 273 * Prepares the CRTC for a mode set, but we don't need to do anything here. 274 */ 275static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc) 276{ 277} 278 279/** 280 * vmw_sou_crtc_atomic_enable - Noop 281 * 282 * @crtc: CRTC associated with the new screen 283 * 284 * This is called after a mode set has been completed. 285 */ 286static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc, 287 struct drm_crtc_state *old_state) 288{ 289} 290 291/** 292 * vmw_sou_crtc_atomic_disable - Turns off CRTC 293 * 294 * @crtc: CRTC to be turned off 295 */ 296static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc, 297 struct drm_crtc_state *old_state) 298{ 299 struct vmw_private *dev_priv; 300 struct vmw_screen_object_unit *sou; 301 int ret; 302 303 304 if (!crtc) { 305 DRM_ERROR("CRTC is NULL\n"); 306 return; 307 } 308 309 sou = vmw_crtc_to_sou(crtc); 310 dev_priv = vmw_priv(crtc->dev); 311 312 if (sou->defined) { 313 ret = vmw_sou_fifo_destroy(dev_priv, sou); 314 if (ret) 315 DRM_ERROR("Failed to destroy Screen Object\n"); 316 } 317} 318 319static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 320 .gamma_set = vmw_du_crtc_gamma_set, 321 .destroy = vmw_sou_crtc_destroy, 322 .reset = vmw_du_crtc_reset, 323 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 324 .atomic_destroy_state = vmw_du_crtc_destroy_state, 325 .set_config = drm_atomic_helper_set_config, 326 .page_flip = drm_atomic_helper_page_flip, 327}; 328 329/* 330 * Screen Object Display Unit encoder functions 331 */ 332 333static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 334{ 335 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 336} 337 338static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 339 .destroy = vmw_sou_encoder_destroy, 340}; 341 342/* 343 * Screen Object Display Unit connector functions 344 */ 345 346static void vmw_sou_connector_destroy(struct drm_connector *connector) 347{ 348 vmw_sou_destroy(vmw_connector_to_sou(connector)); 349} 350 351static const struct drm_connector_funcs vmw_sou_connector_funcs = { 352 .dpms = vmw_du_connector_dpms, 353 .detect = vmw_du_connector_detect, 354 .fill_modes = vmw_du_connector_fill_modes, 355 .destroy = vmw_sou_connector_destroy, 356 .reset = vmw_du_connector_reset, 357 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 358 .atomic_destroy_state = vmw_du_connector_destroy_state, 359}; 360 361 362static const struct 363drm_connector_helper_funcs vmw_sou_connector_helper_funcs = { 364}; 365 366 367 368/* 369 * Screen Object Display Plane Functions 370 */ 371 372/** 373 * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer 374 * 375 * @plane: display plane 376 * @old_state: Contains the FB to clean up 377 * 378 * Unpins the display surface 379 * 380 * Returns 0 on success 381 */ 382static void 383vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane, 384 struct drm_plane_state *old_state) 385{ 386 struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state); 387 struct drm_crtc *crtc = plane->state->crtc ? 388 plane->state->crtc : old_state->crtc; 389 390 if (vps->bo) 391 vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false); 392 vmw_bo_unreference(&vps->bo); 393 vps->bo_size = 0; 394 395 vmw_du_plane_cleanup_fb(plane, old_state); 396} 397 398 399/** 400 * vmw_sou_primary_plane_prepare_fb - allocate backing buffer 401 * 402 * @plane: display plane 403 * @new_state: info on the new plane state, including the FB 404 * 405 * The SOU backing buffer is our equivalent of the display plane. 406 * 407 * Returns 0 on success 408 */ 409static int 410vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane, 411 struct drm_plane_state *new_state) 412{ 413 struct drm_framebuffer *new_fb = new_state->fb; 414 struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc; 415 struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state); 416 struct vmw_private *dev_priv; 417 size_t size; 418 int ret; 419 420 421 if (!new_fb) { 422 vmw_bo_unreference(&vps->bo); 423 vps->bo_size = 0; 424 425 return 0; 426 } 427 428 size = new_state->crtc_w * new_state->crtc_h * 4; 429 dev_priv = vmw_priv(crtc->dev); 430 431 if (vps->bo) { 432 if (vps->bo_size == size) { 433 /* 434 * Note that this might temporarily up the pin-count 435 * to 2, until cleanup_fb() is called. 436 */ 437 return vmw_bo_pin_in_vram(dev_priv, vps->bo, 438 true); 439 } 440 441 vmw_bo_unreference(&vps->bo); 442 vps->bo_size = 0; 443 } 444 445 vps->bo = kzalloc(sizeof(*vps->bo), GFP_KERNEL); 446 if (!vps->bo) 447 return -ENOMEM; 448 449 vmw_svga_enable(dev_priv); 450 451 /* After we have alloced the backing store might not be able to 452 * resume the overlays, this is preferred to failing to alloc. 453 */ 454 vmw_overlay_pause_all(dev_priv); 455 ret = vmw_bo_init(dev_priv, vps->bo, size, 456 &vmw_vram_ne_placement, 457 false, &vmw_bo_bo_free); 458 vmw_overlay_resume_all(dev_priv); 459 if (ret) { 460 vps->bo = NULL; /* vmw_bo_init frees on error */ 461 return ret; 462 } 463 464 vps->bo_size = size; 465 466 /* 467 * TTM already thinks the buffer is pinned, but make sure the 468 * pin_count is upped. 469 */ 470 return vmw_bo_pin_in_vram(dev_priv, vps->bo, true); 471} 472 473static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update, 474 uint32_t num_hits) 475{ 476 return sizeof(struct vmw_kms_sou_define_gmrfb) + 477 sizeof(struct vmw_kms_sou_bo_blit) * num_hits; 478} 479 480static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update, 481 void *cmd) 482{ 483 struct vmw_framebuffer_bo *vfbbo = 484 container_of(update->vfb, typeof(*vfbbo), base); 485 struct vmw_kms_sou_define_gmrfb *gmr = cmd; 486 int depth = update->vfb->base.format->depth; 487 488 /* Emulate RGBA support, contrary to svga_reg.h this is not 489 * supported by hosts. This is only a problem if we are reading 490 * this value later and expecting what we uploaded back. 491 */ 492 if (depth == 32) 493 depth = 24; 494 495 gmr->header = SVGA_CMD_DEFINE_GMRFB; 496 497 gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8; 498 gmr->body.format.colorDepth = depth; 499 gmr->body.format.reserved = 0; 500 gmr->body.bytesPerLine = update->vfb->base.pitches[0]; 501 vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &gmr->body.ptr); 502 503 return sizeof(*gmr); 504} 505 506static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane *update, 507 void *cmd, struct drm_rect *clip, 508 uint32_t fb_x, uint32_t fb_y) 509{ 510 struct vmw_kms_sou_bo_blit *blit = cmd; 511 512 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 513 blit->body.destScreenId = update->du->unit; 514 blit->body.srcOrigin.x = fb_x; 515 blit->body.srcOrigin.y = fb_y; 516 blit->body.destRect.left = clip->x1; 517 blit->body.destRect.top = clip->y1; 518 blit->body.destRect.right = clip->x2; 519 blit->body.destRect.bottom = clip->y2; 520 521 return sizeof(*blit); 522} 523 524static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane *update, 525 void *cmd, struct drm_rect *bb) 526{ 527 return 0; 528} 529 530/** 531 * vmw_sou_plane_update_bo - Update display unit for bo backed fb. 532 * @dev_priv: Device private. 533 * @plane: Plane state. 534 * @old_state: Old plane state. 535 * @vfb: Framebuffer which is blitted to display unit. 536 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 537 * The returned fence pointer may be NULL in which case the device 538 * has already synchronized. 539 * 540 * Return: 0 on success or a negative error code on failure. 541 */ 542static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv, 543 struct drm_plane *plane, 544 struct drm_plane_state *old_state, 545 struct vmw_framebuffer *vfb, 546 struct vmw_fence_obj **out_fence) 547{ 548 struct vmw_du_update_plane_buffer bo_update; 549 550 memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer)); 551 bo_update.base.plane = plane; 552 bo_update.base.old_state = old_state; 553 bo_update.base.dev_priv = dev_priv; 554 bo_update.base.du = vmw_crtc_to_du(plane->state->crtc); 555 bo_update.base.vfb = vfb; 556 bo_update.base.out_fence = out_fence; 557 bo_update.base.mutex = NULL; 558 bo_update.base.cpu_blit = false; 559 bo_update.base.intr = true; 560 561 bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size; 562 bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb; 563 bo_update.base.clip = vmw_sou_bo_populate_clip; 564 bo_update.base.post_clip = vmw_stud_bo_post_clip; 565 566 return vmw_du_helper_plane_update(&bo_update.base); 567} 568 569static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update, 570 uint32_t num_hits) 571{ 572 return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) * 573 num_hits; 574} 575 576static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update, 577 void *cmd) 578{ 579 struct vmw_du_update_plane_surface *srf_update; 580 581 srf_update = container_of(update, typeof(*srf_update), base); 582 583 /* 584 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that 585 * its bounding box is filled before iterating over all the clips. So 586 * store the FIFO start address and revisit to fill the details. 587 */ 588 srf_update->cmd_start = cmd; 589 590 return 0; 591} 592 593static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update, 594 void *cmd, uint32_t num_hits) 595{ 596 struct vmw_kms_sou_dirty_cmd *blit = cmd; 597 struct vmw_framebuffer_surface *vfbs; 598 599 vfbs = container_of(update->vfb, typeof(*vfbs), base); 600 601 blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 602 blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) * 603 num_hits; 604 605 blit->body.srcImage.sid = vfbs->surface->res.id; 606 blit->body.destScreenId = update->du->unit; 607 608 /* Update the source and destination bounding box later in post_clip */ 609 blit->body.srcRect.left = 0; 610 blit->body.srcRect.top = 0; 611 blit->body.srcRect.right = 0; 612 blit->body.srcRect.bottom = 0; 613 614 blit->body.destRect.left = 0; 615 blit->body.destRect.top = 0; 616 blit->body.destRect.right = 0; 617 blit->body.destRect.bottom = 0; 618 619 return sizeof(*blit); 620} 621 622static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update, 623 void *cmd, struct drm_rect *clip, 624 uint32_t src_x, uint32_t src_y) 625{ 626 SVGASignedRect *rect = cmd; 627 628 /* 629 * rects are relative to dest bounding box rect on screen object, so 630 * translate to it later in post_clip 631 */ 632 rect->left = clip->x1; 633 rect->top = clip->y1; 634 rect->right = clip->x2; 635 rect->bottom = clip->y2; 636 637 return sizeof(*rect); 638} 639 640static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update, 641 void *cmd, struct drm_rect *bb) 642{ 643 struct vmw_du_update_plane_surface *srf_update; 644 struct drm_plane_state *state = update->plane->state; 645 struct drm_rect src_bb; 646 struct vmw_kms_sou_dirty_cmd *blit; 647 SVGASignedRect *rect; 648 uint32_t num_hits; 649 int translate_src_x; 650 int translate_src_y; 651 int i; 652 653 srf_update = container_of(update, typeof(*srf_update), base); 654 655 blit = srf_update->cmd_start; 656 rect = (SVGASignedRect *)&blit[1]; 657 658 num_hits = (blit->header.size - sizeof(blit->body))/ 659 sizeof(SVGASignedRect); 660 661 src_bb = *bb; 662 663 /* To translate bb back to fb src coord */ 664 translate_src_x = (state->src_x >> 16) - state->crtc_x; 665 translate_src_y = (state->src_y >> 16) - state->crtc_y; 666 667 drm_rect_translate(&src_bb, translate_src_x, translate_src_y); 668 669 blit->body.srcRect.left = src_bb.x1; 670 blit->body.srcRect.top = src_bb.y1; 671 blit->body.srcRect.right = src_bb.x2; 672 blit->body.srcRect.bottom = src_bb.y2; 673 674 blit->body.destRect.left = bb->x1; 675 blit->body.destRect.top = bb->y1; 676 blit->body.destRect.right = bb->x2; 677 blit->body.destRect.bottom = bb->y2; 678 679 /* rects are relative to dest bb rect */ 680 for (i = 0; i < num_hits; i++) { 681 rect->left -= bb->x1; 682 rect->top -= bb->y1; 683 rect->right -= bb->x1; 684 rect->bottom -= bb->y1; 685 rect++; 686 } 687 688 return 0; 689} 690 691/** 692 * vmw_sou_plane_update_surface - Update display unit for surface backed fb. 693 * @dev_priv: Device private. 694 * @plane: Plane state. 695 * @old_state: Old plane state. 696 * @vfb: Framebuffer which is blitted to display unit 697 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj. 698 * The returned fence pointer may be NULL in which case the device 699 * has already synchronized. 700 * 701 * Return: 0 on success or a negative error code on failure. 702 */ 703static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv, 704 struct drm_plane *plane, 705 struct drm_plane_state *old_state, 706 struct vmw_framebuffer *vfb, 707 struct vmw_fence_obj **out_fence) 708{ 709 struct vmw_du_update_plane_surface srf_update; 710 711 memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface)); 712 srf_update.base.plane = plane; 713 srf_update.base.old_state = old_state; 714 srf_update.base.dev_priv = dev_priv; 715 srf_update.base.du = vmw_crtc_to_du(plane->state->crtc); 716 srf_update.base.vfb = vfb; 717 srf_update.base.out_fence = out_fence; 718 srf_update.base.mutex = &dev_priv->cmdbuf_mutex; 719 srf_update.base.cpu_blit = false; 720 srf_update.base.intr = true; 721 722 srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size; 723 srf_update.base.post_prepare = vmw_sou_surface_post_prepare; 724 srf_update.base.pre_clip = vmw_sou_surface_pre_clip; 725 srf_update.base.clip = vmw_sou_surface_clip_rect; 726 srf_update.base.post_clip = vmw_sou_surface_post_clip; 727 728 return vmw_du_helper_plane_update(&srf_update.base); 729} 730 731static void 732vmw_sou_primary_plane_atomic_update(struct drm_plane *plane, 733 struct drm_plane_state *old_state) 734{ 735 struct drm_crtc *crtc = plane->state->crtc; 736 struct drm_pending_vblank_event *event = NULL; 737 struct vmw_fence_obj *fence = NULL; 738 int ret; 739 740 /* In case of device error, maintain consistent atomic state */ 741 if (crtc && plane->state->fb) { 742 struct vmw_private *dev_priv = vmw_priv(crtc->dev); 743 struct vmw_framebuffer *vfb = 744 vmw_framebuffer_to_vfb(plane->state->fb); 745 746 if (vfb->bo) 747 ret = vmw_sou_plane_update_bo(dev_priv, plane, 748 old_state, vfb, &fence); 749 else 750 ret = vmw_sou_plane_update_surface(dev_priv, plane, 751 old_state, vfb, 752 &fence); 753 if (ret != 0) 754 DRM_ERROR("Failed to update screen.\n"); 755 } else { 756 /* Do nothing when fb and crtc is NULL (blank crtc) */ 757 return; 758 } 759 760 /* For error case vblank event is send from vmw_du_crtc_atomic_flush */ 761 event = crtc->state->event; 762 if (event && fence) { 763 struct drm_file *file_priv = event->base.file_priv; 764 765 ret = vmw_event_fence_action_queue(file_priv, 766 fence, 767 &event->base, 768 &event->event.vbl.tv_sec, 769 &event->event.vbl.tv_usec, 770 true); 771 772 if (unlikely(ret != 0)) 773 DRM_ERROR("Failed to queue event on fence.\n"); 774 else 775 crtc->state->event = NULL; 776 } 777 778 if (fence) 779 vmw_fence_obj_unreference(&fence); 780} 781 782 783static const struct drm_plane_funcs vmw_sou_plane_funcs = { 784 .update_plane = drm_atomic_helper_update_plane, 785 .disable_plane = drm_atomic_helper_disable_plane, 786 .destroy = vmw_du_primary_plane_destroy, 787 .reset = vmw_du_plane_reset, 788 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 789 .atomic_destroy_state = vmw_du_plane_destroy_state, 790}; 791 792static const struct drm_plane_funcs vmw_sou_cursor_funcs = { 793 .update_plane = drm_atomic_helper_update_plane, 794 .disable_plane = drm_atomic_helper_disable_plane, 795 .destroy = vmw_du_cursor_plane_destroy, 796 .reset = vmw_du_plane_reset, 797 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 798 .atomic_destroy_state = vmw_du_plane_destroy_state, 799}; 800 801/* 802 * Atomic Helpers 803 */ 804static const struct 805drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = { 806 .atomic_check = vmw_du_cursor_plane_atomic_check, 807 .atomic_update = vmw_du_cursor_plane_atomic_update, 808 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 809 .cleanup_fb = vmw_du_plane_cleanup_fb, 810}; 811 812static const struct 813drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = { 814 .atomic_check = vmw_du_primary_plane_atomic_check, 815 .atomic_update = vmw_sou_primary_plane_atomic_update, 816 .prepare_fb = vmw_sou_primary_plane_prepare_fb, 817 .cleanup_fb = vmw_sou_primary_plane_cleanup_fb, 818}; 819 820static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = { 821 .prepare = vmw_sou_crtc_helper_prepare, 822 .mode_set_nofb = vmw_sou_crtc_mode_set_nofb, 823 .atomic_check = vmw_du_crtc_atomic_check, 824 .atomic_begin = vmw_du_crtc_atomic_begin, 825 .atomic_flush = vmw_du_crtc_atomic_flush, 826 .atomic_enable = vmw_sou_crtc_atomic_enable, 827 .atomic_disable = vmw_sou_crtc_atomic_disable, 828}; 829 830 831static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 832{ 833 struct vmw_screen_object_unit *sou; 834 struct drm_device *dev = dev_priv->dev; 835 struct drm_connector *connector; 836 struct drm_encoder *encoder; 837 struct drm_plane *primary, *cursor; 838 struct drm_crtc *crtc; 839 int ret; 840 841 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 842 if (!sou) 843 return -ENOMEM; 844 845 sou->base.unit = unit; 846 crtc = &sou->base.crtc; 847 encoder = &sou->base.encoder; 848 connector = &sou->base.connector; 849 primary = &sou->base.primary; 850 cursor = &sou->base.cursor; 851 852 sou->base.pref_active = (unit == 0); 853 sou->base.pref_width = dev_priv->initial_width; 854 sou->base.pref_height = dev_priv->initial_height; 855 sou->base.pref_mode = NULL; 856 857 /* 858 * Remove this after enabling atomic because property values can 859 * only exist in a state object 860 */ 861 sou->base.is_implicit = false; 862 863 /* Initialize primary plane */ 864 vmw_du_plane_reset(primary); 865 866 ret = drm_universal_plane_init(dev, &sou->base.primary, 867 0, &vmw_sou_plane_funcs, 868 vmw_primary_plane_formats, 869 ARRAY_SIZE(vmw_primary_plane_formats), 870 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 871 if (ret) { 872 DRM_ERROR("Failed to initialize primary plane"); 873 goto err_free; 874 } 875 876 drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs); 877 drm_plane_enable_fb_damage_clips(primary); 878 879 /* Initialize cursor plane */ 880 vmw_du_plane_reset(cursor); 881 882 ret = drm_universal_plane_init(dev, &sou->base.cursor, 883 0, &vmw_sou_cursor_funcs, 884 vmw_cursor_plane_formats, 885 ARRAY_SIZE(vmw_cursor_plane_formats), 886 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 887 if (ret) { 888 DRM_ERROR("Failed to initialize cursor plane"); 889 drm_plane_cleanup(&sou->base.primary); 890 goto err_free; 891 } 892 893 drm_plane_helper_add(cursor, &vmw_sou_cursor_plane_helper_funcs); 894 895 vmw_du_connector_reset(connector); 896 ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs, 897 DRM_MODE_CONNECTOR_VIRTUAL); 898 if (ret) { 899 DRM_ERROR("Failed to initialize connector\n"); 900 goto err_free; 901 } 902 903 drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs); 904 connector->status = vmw_du_connector_detect(connector, true); 905 906 ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, 907 DRM_MODE_ENCODER_VIRTUAL, NULL); 908 if (ret) { 909 DRM_ERROR("Failed to initialize encoder\n"); 910 goto err_free_connector; 911 } 912 913 (void) drm_connector_attach_encoder(connector, encoder); 914 encoder->possible_crtcs = (1 << unit); 915 encoder->possible_clones = 0; 916 917 ret = drm_connector_register(connector); 918 if (ret) { 919 DRM_ERROR("Failed to register connector\n"); 920 goto err_free_encoder; 921 } 922 923 924 vmw_du_crtc_reset(crtc); 925 ret = drm_crtc_init_with_planes(dev, crtc, &sou->base.primary, 926 &sou->base.cursor, 927 &vmw_screen_object_crtc_funcs, NULL); 928 if (ret) { 929 DRM_ERROR("Failed to initialize CRTC\n"); 930 goto err_free_unregister; 931 } 932 933 drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs); 934 935 drm_mode_crtc_set_gamma_size(crtc, 256); 936 937 drm_object_attach_property(&connector->base, 938 dev_priv->hotplug_mode_update_property, 1); 939 drm_object_attach_property(&connector->base, 940 dev->mode_config.suggested_x_property, 0); 941 drm_object_attach_property(&connector->base, 942 dev->mode_config.suggested_y_property, 0); 943 return 0; 944 945err_free_unregister: 946 drm_connector_unregister(connector); 947err_free_encoder: 948 drm_encoder_cleanup(encoder); 949err_free_connector: 950 drm_connector_cleanup(connector); 951err_free: 952 kfree(sou); 953 return ret; 954} 955 956int vmw_kms_sou_init_display(struct vmw_private *dev_priv) 957{ 958 struct drm_device *dev = dev_priv->dev; 959 int i, ret; 960 961 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { 962 DRM_INFO("Not using screen objects," 963 " missing cap SCREEN_OBJECT_2\n"); 964 return -ENOSYS; 965 } 966 967 ret = -ENOMEM; 968 969 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 970 if (unlikely(ret != 0)) 971 return ret; 972 973 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 974 vmw_sou_init(dev_priv, i); 975 976 dev_priv->active_display_unit = vmw_du_screen_object; 977 978 DRM_INFO("Screen Objects Display Unit initialized\n"); 979 980 return 0; 981} 982 983static int do_bo_define_gmrfb(struct vmw_private *dev_priv, 984 struct vmw_framebuffer *framebuffer) 985{ 986 struct vmw_buffer_object *buf = 987 container_of(framebuffer, struct vmw_framebuffer_bo, 988 base)->buffer; 989 int depth = framebuffer->base.format->depth; 990 struct { 991 uint32_t header; 992 SVGAFifoCmdDefineGMRFB body; 993 } *cmd; 994 995 /* Emulate RGBA support, contrary to svga_reg.h this is not 996 * supported by hosts. This is only a problem if we are reading 997 * this value later and expecting what we uploaded back. 998 */ 999 if (depth == 32) 1000 depth = 24; 1001 1002 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd)); 1003 if (!cmd) 1004 return -ENOMEM; 1005 1006 cmd->header = SVGA_CMD_DEFINE_GMRFB; 1007 cmd->body.format.bitsPerPixel = framebuffer->base.format->cpp[0] * 8; 1008 cmd->body.format.colorDepth = depth; 1009 cmd->body.format.reserved = 0; 1010 cmd->body.bytesPerLine = framebuffer->base.pitches[0]; 1011 /* Buffer is reserved in vram or GMR */ 1012 vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr); 1013 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 1014 1015 return 0; 1016} 1017 1018/** 1019 * vmw_sou_surface_fifo_commit - Callback to fill in and submit a 1020 * blit surface to screen command. 1021 * 1022 * @dirty: The closure structure. 1023 * 1024 * Fills in the missing fields in the command, and translates the cliprects 1025 * to match the destination bounding box encoded. 1026 */ 1027static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty) 1028{ 1029 struct vmw_kms_sou_surface_dirty *sdirty = 1030 container_of(dirty, typeof(*sdirty), base); 1031 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 1032 s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x; 1033 s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y; 1034 size_t region_size = dirty->num_hits * sizeof(SVGASignedRect); 1035 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 1036 int i; 1037 1038 if (!dirty->num_hits) { 1039 vmw_fifo_commit(dirty->dev_priv, 0); 1040 return; 1041 } 1042 1043 cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; 1044 cmd->header.size = sizeof(cmd->body) + region_size; 1045 1046 /* 1047 * Use the destination bounding box to specify destination - and 1048 * source bounding regions. 1049 */ 1050 cmd->body.destRect.left = sdirty->left; 1051 cmd->body.destRect.right = sdirty->right; 1052 cmd->body.destRect.top = sdirty->top; 1053 cmd->body.destRect.bottom = sdirty->bottom; 1054 1055 cmd->body.srcRect.left = sdirty->left + trans_x; 1056 cmd->body.srcRect.right = sdirty->right + trans_x; 1057 cmd->body.srcRect.top = sdirty->top + trans_y; 1058 cmd->body.srcRect.bottom = sdirty->bottom + trans_y; 1059 1060 cmd->body.srcImage.sid = sdirty->sid; 1061 cmd->body.destScreenId = dirty->unit->unit; 1062 1063 /* Blits are relative to the destination rect. Translate. */ 1064 for (i = 0; i < dirty->num_hits; ++i, ++blit) { 1065 blit->left -= sdirty->left; 1066 blit->right -= sdirty->left; 1067 blit->top -= sdirty->top; 1068 blit->bottom -= sdirty->top; 1069 } 1070 1071 vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd)); 1072 1073 sdirty->left = sdirty->top = S32_MAX; 1074 sdirty->right = sdirty->bottom = S32_MIN; 1075} 1076 1077/** 1078 * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect. 1079 * 1080 * @dirty: The closure structure 1081 * 1082 * Encodes a SVGASignedRect cliprect and updates the bounding box of the 1083 * BLIT_SURFACE_TO_SCREEN command. 1084 */ 1085static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty) 1086{ 1087 struct vmw_kms_sou_surface_dirty *sdirty = 1088 container_of(dirty, typeof(*sdirty), base); 1089 struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd; 1090 SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; 1091 1092 /* Destination rect. */ 1093 blit += dirty->num_hits; 1094 blit->left = dirty->unit_x1; 1095 blit->top = dirty->unit_y1; 1096 blit->right = dirty->unit_x2; 1097 blit->bottom = dirty->unit_y2; 1098 1099 /* Destination bounding box */ 1100 sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1); 1101 sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1); 1102 sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2); 1103 sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2); 1104 1105 dirty->num_hits++; 1106} 1107 1108/** 1109 * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer 1110 * 1111 * @dev_priv: Pointer to the device private structure. 1112 * @framebuffer: Pointer to the surface-buffer backed framebuffer. 1113 * @clips: Array of clip rects. Either @clips or @vclips must be NULL. 1114 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 1115 * be NULL. 1116 * @srf: Pointer to surface to blit from. If NULL, the surface attached 1117 * to @framebuffer will be used. 1118 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates. 1119 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates. 1120 * @num_clips: Number of clip rects in @clips. 1121 * @inc: Increment to use when looping over @clips. 1122 * @out_fence: If non-NULL, will return a ref-counted pointer to a 1123 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 1124 * case the device has already synchronized. 1125 * @crtc: If crtc is passed, perform surface dirty on that crtc only. 1126 * 1127 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1128 * interrupted. 1129 */ 1130int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv, 1131 struct vmw_framebuffer *framebuffer, 1132 struct drm_clip_rect *clips, 1133 struct drm_vmw_rect *vclips, 1134 struct vmw_resource *srf, 1135 s32 dest_x, 1136 s32 dest_y, 1137 unsigned num_clips, int inc, 1138 struct vmw_fence_obj **out_fence, 1139 struct drm_crtc *crtc) 1140{ 1141 struct vmw_framebuffer_surface *vfbs = 1142 container_of(framebuffer, typeof(*vfbs), base); 1143 struct vmw_kms_sou_surface_dirty sdirty; 1144 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1145 int ret; 1146 1147 if (!srf) 1148 srf = &vfbs->surface->res; 1149 1150 ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE, 1151 NULL, NULL); 1152 if (ret) 1153 return ret; 1154 1155 ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true); 1156 if (ret) 1157 goto out_unref; 1158 1159 sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit; 1160 sdirty.base.clip = vmw_sou_surface_clip; 1161 sdirty.base.dev_priv = dev_priv; 1162 sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) + 1163 sizeof(SVGASignedRect) * num_clips; 1164 sdirty.base.crtc = crtc; 1165 1166 sdirty.sid = srf->id; 1167 sdirty.left = sdirty.top = S32_MAX; 1168 sdirty.right = sdirty.bottom = S32_MIN; 1169 sdirty.dst_x = dest_x; 1170 sdirty.dst_y = dest_y; 1171 1172 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1173 dest_x, dest_y, num_clips, inc, 1174 &sdirty.base); 1175 vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence, 1176 NULL); 1177 1178 return ret; 1179 1180out_unref: 1181 vmw_validation_unref_lists(&val_ctx); 1182 return ret; 1183} 1184 1185/** 1186 * vmw_sou_bo_fifo_commit - Callback to submit a set of readback clips. 1187 * 1188 * @dirty: The closure structure. 1189 * 1190 * Commits a previously built command buffer of readback clips. 1191 */ 1192static void vmw_sou_bo_fifo_commit(struct vmw_kms_dirty *dirty) 1193{ 1194 if (!dirty->num_hits) { 1195 vmw_fifo_commit(dirty->dev_priv, 0); 1196 return; 1197 } 1198 1199 vmw_fifo_commit(dirty->dev_priv, 1200 sizeof(struct vmw_kms_sou_bo_blit) * 1201 dirty->num_hits); 1202} 1203 1204/** 1205 * vmw_sou_bo_clip - Callback to encode a readback cliprect. 1206 * 1207 * @dirty: The closure structure 1208 * 1209 * Encodes a BLIT_GMRFB_TO_SCREEN cliprect. 1210 */ 1211static void vmw_sou_bo_clip(struct vmw_kms_dirty *dirty) 1212{ 1213 struct vmw_kms_sou_bo_blit *blit = dirty->cmd; 1214 1215 blit += dirty->num_hits; 1216 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN; 1217 blit->body.destScreenId = dirty->unit->unit; 1218 blit->body.srcOrigin.x = dirty->fb_x; 1219 blit->body.srcOrigin.y = dirty->fb_y; 1220 blit->body.destRect.left = dirty->unit_x1; 1221 blit->body.destRect.top = dirty->unit_y1; 1222 blit->body.destRect.right = dirty->unit_x2; 1223 blit->body.destRect.bottom = dirty->unit_y2; 1224 dirty->num_hits++; 1225} 1226 1227/** 1228 * vmw_kms_do_bo_dirty - Dirty part of a buffer-object backed framebuffer 1229 * 1230 * @dev_priv: Pointer to the device private structure. 1231 * @framebuffer: Pointer to the buffer-object backed framebuffer. 1232 * @clips: Array of clip rects. 1233 * @vclips: Alternate array of clip rects. Either @clips or @vclips must 1234 * be NULL. 1235 * @num_clips: Number of clip rects in @clips. 1236 * @increment: Increment to use when looping over @clips. 1237 * @interruptible: Whether to perform waits interruptible if possible. 1238 * @out_fence: If non-NULL, will return a ref-counted pointer to a 1239 * struct vmw_fence_obj. The returned fence pointer may be NULL in which 1240 * case the device has already synchronized. 1241 * @crtc: If crtc is passed, perform bo dirty on that crtc only. 1242 * 1243 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1244 * interrupted. 1245 */ 1246int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv, 1247 struct vmw_framebuffer *framebuffer, 1248 struct drm_clip_rect *clips, 1249 struct drm_vmw_rect *vclips, 1250 unsigned num_clips, int increment, 1251 bool interruptible, 1252 struct vmw_fence_obj **out_fence, 1253 struct drm_crtc *crtc) 1254{ 1255 struct vmw_buffer_object *buf = 1256 container_of(framebuffer, struct vmw_framebuffer_bo, 1257 base)->buffer; 1258 struct vmw_kms_dirty dirty; 1259 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1260 int ret; 1261 1262 ret = vmw_validation_add_bo(&val_ctx, buf, false, false); 1263 if (ret) 1264 return ret; 1265 1266 ret = vmw_validation_prepare(&val_ctx, NULL, interruptible); 1267 if (ret) 1268 goto out_unref; 1269 1270 ret = do_bo_define_gmrfb(dev_priv, framebuffer); 1271 if (unlikely(ret != 0)) 1272 goto out_revert; 1273 1274 dirty.crtc = crtc; 1275 dirty.fifo_commit = vmw_sou_bo_fifo_commit; 1276 dirty.clip = vmw_sou_bo_clip; 1277 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) * 1278 num_clips; 1279 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, 1280 0, 0, num_clips, increment, &dirty); 1281 vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence, 1282 NULL); 1283 1284 return ret; 1285 1286out_revert: 1287 vmw_validation_revert(&val_ctx); 1288out_unref: 1289 vmw_validation_unref_lists(&val_ctx); 1290 1291 return ret; 1292} 1293 1294 1295/** 1296 * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips. 1297 * 1298 * @dirty: The closure structure. 1299 * 1300 * Commits a previously built command buffer of readback clips. 1301 */ 1302static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty) 1303{ 1304 if (!dirty->num_hits) { 1305 vmw_fifo_commit(dirty->dev_priv, 0); 1306 return; 1307 } 1308 1309 vmw_fifo_commit(dirty->dev_priv, 1310 sizeof(struct vmw_kms_sou_readback_blit) * 1311 dirty->num_hits); 1312} 1313 1314/** 1315 * vmw_sou_readback_clip - Callback to encode a readback cliprect. 1316 * 1317 * @dirty: The closure structure 1318 * 1319 * Encodes a BLIT_SCREEN_TO_GMRFB cliprect. 1320 */ 1321static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty) 1322{ 1323 struct vmw_kms_sou_readback_blit *blit = dirty->cmd; 1324 1325 blit += dirty->num_hits; 1326 blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB; 1327 blit->body.srcScreenId = dirty->unit->unit; 1328 blit->body.destOrigin.x = dirty->fb_x; 1329 blit->body.destOrigin.y = dirty->fb_y; 1330 blit->body.srcRect.left = dirty->unit_x1; 1331 blit->body.srcRect.top = dirty->unit_y1; 1332 blit->body.srcRect.right = dirty->unit_x2; 1333 blit->body.srcRect.bottom = dirty->unit_y2; 1334 dirty->num_hits++; 1335} 1336 1337/** 1338 * vmw_kms_sou_readback - Perform a readback from the screen object system to 1339 * a buffer-object backed framebuffer. 1340 * 1341 * @dev_priv: Pointer to the device private structure. 1342 * @file_priv: Pointer to a struct drm_file identifying the caller. 1343 * Must be set to NULL if @user_fence_rep is NULL. 1344 * @vfb: Pointer to the buffer-object backed framebuffer. 1345 * @user_fence_rep: User-space provided structure for fence information. 1346 * Must be set to non-NULL if @file_priv is non-NULL. 1347 * @vclips: Array of clip rects. 1348 * @num_clips: Number of clip rects in @vclips. 1349 * @crtc: If crtc is passed, readback on that crtc only. 1350 * 1351 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if 1352 * interrupted. 1353 */ 1354int vmw_kms_sou_readback(struct vmw_private *dev_priv, 1355 struct drm_file *file_priv, 1356 struct vmw_framebuffer *vfb, 1357 struct drm_vmw_fence_rep __user *user_fence_rep, 1358 struct drm_vmw_rect *vclips, 1359 uint32_t num_clips, 1360 struct drm_crtc *crtc) 1361{ 1362 struct vmw_buffer_object *buf = 1363 container_of(vfb, struct vmw_framebuffer_bo, base)->buffer; 1364 struct vmw_kms_dirty dirty; 1365 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0); 1366 int ret; 1367 1368 ret = vmw_validation_add_bo(&val_ctx, buf, false, false); 1369 if (ret) 1370 return ret; 1371 1372 ret = vmw_validation_prepare(&val_ctx, NULL, true); 1373 if (ret) 1374 goto out_unref; 1375 1376 ret = do_bo_define_gmrfb(dev_priv, vfb); 1377 if (unlikely(ret != 0)) 1378 goto out_revert; 1379 1380 dirty.crtc = crtc; 1381 dirty.fifo_commit = vmw_sou_readback_fifo_commit; 1382 dirty.clip = vmw_sou_readback_clip; 1383 dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) * 1384 num_clips; 1385 ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips, 1386 0, 0, num_clips, 1, &dirty); 1387 vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL, 1388 user_fence_rep); 1389 1390 return ret; 1391 1392out_revert: 1393 vmw_validation_revert(&val_ctx); 1394out_unref: 1395 vmw_validation_unref_lists(&val_ctx); 1396 1397 return ret; 1398} 1399