1 /************************************************************************** 2 * 3 * Copyright © 2012 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #include "vmwgfx_drv.h" 29 30 /* 31 * If we set up the screen target otable, screen objects stop working. 32 */ 33 34 #define VMW_OTABLE_SETUP_SUB ((VMWGFX_ENABLE_SCREEN_TARGET_OTABLE) ? 0 : 1) 35 36 #ifdef CONFIG_64BIT 37 #define VMW_PPN_SIZE 8 38 #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH64_0 39 #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH64_1 40 #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH64_2 41 #else 42 #define VMW_PPN_SIZE 4 43 #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH_0 44 #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH_1 45 #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH_2 46 #endif 47 48 /* 49 * struct vmw_mob - Structure containing page table and metadata for a 50 * Guest Memory OBject. 51 * 52 * @num_pages Number of pages that make up the page table. 53 * @pt_level The indirection level of the page table. 0-2. 54 * @pt_root_page DMA address of the level 0 page of the page table. 55 */ 56 struct vmw_mob { 57 struct ttm_buffer_object *pt_bo; 58 unsigned long num_pages; 59 unsigned pt_level; 60 dma_addr_t pt_root_page; 61 uint32_t id; 62 }; 63 64 /* 65 * struct vmw_otable - Guest Memory OBject table metadata 66 * 67 * @size: Size of the table (page-aligned). 68 * @page_table: Pointer to a struct vmw_mob holding the page table. 69 */ 70 struct vmw_otable { 71 unsigned long size; 72 struct vmw_mob *page_table; 73 }; 74 75 static int vmw_mob_pt_populate(struct vmw_private *dev_priv, 76 struct vmw_mob *mob); 77 static void vmw_mob_pt_setup(struct vmw_mob *mob, 78 struct vmw_piter data_iter, 79 unsigned long num_data_pages); 80 81 /* 82 * vmw_setup_otable_base - Issue an object table base setup command to 83 * the device 84 * 85 * @dev_priv: Pointer to a device private structure 86 * @type: Type of object table base 87 * @offset Start of table offset into dev_priv::otable_bo 88 * @otable Pointer to otable metadata; 89 * 90 * This function returns -ENOMEM if it fails to reserve fifo space, 91 * and may block waiting for fifo space. 92 */ 93 static int vmw_setup_otable_base(struct vmw_private *dev_priv, 94 SVGAOTableType type, 95 unsigned long offset, 96 struct vmw_otable *otable) 97 { 98 struct { 99 SVGA3dCmdHeader header; 100 SVGA3dCmdSetOTableBase64 body; 101 } *cmd; 102 struct vmw_mob *mob; 103 const struct vmw_sg_table *vsgt; 104 struct vmw_piter iter; 105 int ret; 106 107 BUG_ON(otable->page_table != NULL); 108 109 vsgt = vmw_bo_sg_table(dev_priv->otable_bo); 110 vmw_piter_start(&iter, vsgt, offset >> PAGE_SHIFT); 111 WARN_ON(!vmw_piter_next(&iter)); 112 113 mob = vmw_mob_create(otable->size >> PAGE_SHIFT); 114 if (unlikely(mob == NULL)) { 115 DRM_ERROR("Failed creating OTable page table.\n"); 116 return -ENOMEM; 117 } 118 119 if (otable->size <= PAGE_SIZE) { 120 mob->pt_level = VMW_MOBFMT_PTDEPTH_0; 121 mob->pt_root_page = vmw_piter_dma_addr(&iter); 122 } else if (vsgt->num_regions == 1) { 123 mob->pt_level = SVGA3D_MOBFMT_RANGE; 124 mob->pt_root_page = vmw_piter_dma_addr(&iter); 125 } else { 126 ret = vmw_mob_pt_populate(dev_priv, mob); 127 if (unlikely(ret != 0)) 128 goto out_no_populate; 129 130 vmw_mob_pt_setup(mob, iter, otable->size >> PAGE_SHIFT); 131 mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; 132 } 133 134 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 135 if (unlikely(cmd == NULL)) { 136 DRM_ERROR("Failed reserving FIFO space for OTable setup.\n"); 137 ret = -ENOMEM; 138 goto out_no_fifo; 139 } 140 141 memset(cmd, 0, sizeof(*cmd)); 142 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE64; 143 cmd->header.size = sizeof(cmd->body); 144 cmd->body.type = type; 145 cmd->body.baseAddress = cpu_to_le64(mob->pt_root_page >> PAGE_SHIFT); 146 cmd->body.sizeInBytes = otable->size; 147 cmd->body.validSizeInBytes = 0; 148 cmd->body.ptDepth = mob->pt_level; 149 150 /* 151 * The device doesn't support this, But the otable size is 152 * determined at compile-time, so this BUG shouldn't trigger 153 * randomly. 154 */ 155 BUG_ON(mob->pt_level == VMW_MOBFMT_PTDEPTH_2); 156 157 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 158 otable->page_table = mob; 159 160 return 0; 161 162 out_no_fifo: 163 out_no_populate: 164 vmw_mob_destroy(mob); 165 return ret; 166 } 167 168 /* 169 * vmw_takedown_otable_base - Issue an object table base takedown command 170 * to the device 171 * 172 * @dev_priv: Pointer to a device private structure 173 * @type: Type of object table base 174 * 175 */ 176 static void vmw_takedown_otable_base(struct vmw_private *dev_priv, 177 SVGAOTableType type, 178 struct vmw_otable *otable) 179 { 180 struct { 181 SVGA3dCmdHeader header; 182 SVGA3dCmdSetOTableBase body; 183 } *cmd; 184 struct ttm_buffer_object *bo; 185 186 if (otable->page_table == NULL) 187 return; 188 189 bo = otable->page_table->pt_bo; 190 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 191 if (unlikely(cmd == NULL)) 192 DRM_ERROR("Failed reserving FIFO space for OTable setup.\n"); 193 194 memset(cmd, 0, sizeof(*cmd)); 195 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE; 196 cmd->header.size = sizeof(cmd->body); 197 cmd->body.type = type; 198 cmd->body.baseAddress = 0; 199 cmd->body.sizeInBytes = 0; 200 cmd->body.validSizeInBytes = 0; 201 cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID; 202 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 203 204 if (bo) { 205 int ret; 206 207 ret = ttm_bo_reserve(bo, false, true, false, NULL); 208 BUG_ON(ret != 0); 209 210 vmw_fence_single_bo(bo, NULL); 211 ttm_bo_unreserve(bo); 212 } 213 214 vmw_mob_destroy(otable->page_table); 215 otable->page_table = NULL; 216 } 217 218 /* 219 * vmw_otables_setup - Set up guest backed memory object tables 220 * 221 * @dev_priv: Pointer to a device private structure 222 * 223 * Takes care of the device guest backed surface 224 * initialization, by setting up the guest backed memory object tables. 225 * Returns 0 on success and various error codes on failure. A succesful return 226 * means the object tables can be taken down using the vmw_otables_takedown 227 * function. 228 */ 229 int vmw_otables_setup(struct vmw_private *dev_priv) 230 { 231 unsigned long offset; 232 unsigned long bo_size; 233 struct vmw_otable *otables; 234 SVGAOTableType i; 235 int ret; 236 237 otables = kzalloc(SVGA_OTABLE_DX9_MAX * sizeof(*otables), 238 GFP_KERNEL); 239 if (unlikely(otables == NULL)) { 240 DRM_ERROR("Failed to allocate space for otable " 241 "metadata.\n"); 242 return -ENOMEM; 243 } 244 245 otables[SVGA_OTABLE_MOB].size = 246 VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE; 247 otables[SVGA_OTABLE_SURFACE].size = 248 VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE; 249 otables[SVGA_OTABLE_CONTEXT].size = 250 VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE; 251 otables[SVGA_OTABLE_SHADER].size = 252 VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE; 253 otables[SVGA_OTABLE_SCREEN_TARGET].size = 254 VMWGFX_NUM_GB_SCREEN_TARGET * 255 SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE; 256 257 bo_size = 0; 258 for (i = 0; i < SVGA_OTABLE_DX9_MAX; ++i) { 259 otables[i].size = 260 (otables[i].size + PAGE_SIZE - 1) & PAGE_MASK; 261 bo_size += otables[i].size; 262 } 263 264 ret = ttm_bo_create(&dev_priv->bdev, bo_size, 265 ttm_bo_type_device, 266 &vmw_sys_ne_placement, 267 0, false, NULL, 268 &dev_priv->otable_bo); 269 270 if (unlikely(ret != 0)) 271 goto out_no_bo; 272 273 ret = ttm_bo_reserve(dev_priv->otable_bo, false, true, false, NULL); 274 BUG_ON(ret != 0); 275 ret = vmw_bo_driver.ttm_tt_populate(dev_priv->otable_bo->ttm); 276 if (unlikely(ret != 0)) 277 goto out_unreserve; 278 ret = vmw_bo_map_dma(dev_priv->otable_bo); 279 if (unlikely(ret != 0)) 280 goto out_unreserve; 281 282 ttm_bo_unreserve(dev_priv->otable_bo); 283 284 offset = 0; 285 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) { 286 ret = vmw_setup_otable_base(dev_priv, i, offset, 287 &otables[i]); 288 if (unlikely(ret != 0)) 289 goto out_no_setup; 290 offset += otables[i].size; 291 } 292 293 dev_priv->otables = otables; 294 return 0; 295 296 out_unreserve: 297 ttm_bo_unreserve(dev_priv->otable_bo); 298 out_no_setup: 299 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) 300 vmw_takedown_otable_base(dev_priv, i, &otables[i]); 301 302 ttm_bo_unref(&dev_priv->otable_bo); 303 out_no_bo: 304 kfree(otables); 305 return ret; 306 } 307 308 309 /* 310 * vmw_otables_takedown - Take down guest backed memory object tables 311 * 312 * @dev_priv: Pointer to a device private structure 313 * 314 * Take down the Guest Memory Object tables. 315 */ 316 void vmw_otables_takedown(struct vmw_private *dev_priv) 317 { 318 SVGAOTableType i; 319 struct ttm_buffer_object *bo = dev_priv->otable_bo; 320 int ret; 321 322 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) 323 vmw_takedown_otable_base(dev_priv, i, 324 &dev_priv->otables[i]); 325 326 ret = ttm_bo_reserve(bo, false, true, false, NULL); 327 BUG_ON(ret != 0); 328 329 vmw_fence_single_bo(bo, NULL); 330 ttm_bo_unreserve(bo); 331 332 ttm_bo_unref(&dev_priv->otable_bo); 333 kfree(dev_priv->otables); 334 dev_priv->otables = NULL; 335 } 336 337 338 /* 339 * vmw_mob_calculate_pt_pages - Calculate the number of page table pages 340 * needed for a guest backed memory object. 341 * 342 * @data_pages: Number of data pages in the memory object buffer. 343 */ 344 static unsigned long vmw_mob_calculate_pt_pages(unsigned long data_pages) 345 { 346 unsigned long data_size = data_pages * PAGE_SIZE; 347 unsigned long tot_size = 0; 348 349 while (likely(data_size > PAGE_SIZE)) { 350 data_size = DIV_ROUND_UP(data_size, PAGE_SIZE); 351 data_size *= VMW_PPN_SIZE; 352 tot_size += (data_size + PAGE_SIZE - 1) & PAGE_MASK; 353 } 354 355 return tot_size >> PAGE_SHIFT; 356 } 357 358 /* 359 * vmw_mob_create - Create a mob, but don't populate it. 360 * 361 * @data_pages: Number of data pages of the underlying buffer object. 362 */ 363 struct vmw_mob *vmw_mob_create(unsigned long data_pages) 364 { 365 struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL); 366 367 if (unlikely(mob == NULL)) 368 return NULL; 369 370 mob->num_pages = vmw_mob_calculate_pt_pages(data_pages); 371 372 return mob; 373 } 374 375 /* 376 * vmw_mob_pt_populate - Populate the mob pagetable 377 * 378 * @mob: Pointer to the mob the pagetable of which we want to 379 * populate. 380 * 381 * This function allocates memory to be used for the pagetable, and 382 * adjusts TTM memory accounting accordingly. Returns ENOMEM if 383 * memory resources aren't sufficient and may cause TTM buffer objects 384 * to be swapped out by using the TTM memory accounting function. 385 */ 386 static int vmw_mob_pt_populate(struct vmw_private *dev_priv, 387 struct vmw_mob *mob) 388 { 389 int ret; 390 BUG_ON(mob->pt_bo != NULL); 391 392 ret = ttm_bo_create(&dev_priv->bdev, mob->num_pages * PAGE_SIZE, 393 ttm_bo_type_device, 394 &vmw_sys_ne_placement, 395 0, false, NULL, &mob->pt_bo); 396 if (unlikely(ret != 0)) 397 return ret; 398 399 ret = ttm_bo_reserve(mob->pt_bo, false, true, false, NULL); 400 401 BUG_ON(ret != 0); 402 ret = vmw_bo_driver.ttm_tt_populate(mob->pt_bo->ttm); 403 if (unlikely(ret != 0)) 404 goto out_unreserve; 405 ret = vmw_bo_map_dma(mob->pt_bo); 406 if (unlikely(ret != 0)) 407 goto out_unreserve; 408 409 ttm_bo_unreserve(mob->pt_bo); 410 411 return 0; 412 413 out_unreserve: 414 ttm_bo_unreserve(mob->pt_bo); 415 ttm_bo_unref(&mob->pt_bo); 416 417 return ret; 418 } 419 420 /** 421 * vmw_mob_assign_ppn - Assign a value to a page table entry 422 * 423 * @addr: Pointer to pointer to page table entry. 424 * @val: The page table entry 425 * 426 * Assigns a value to a page table entry pointed to by *@addr and increments 427 * *@addr according to the page table entry size. 428 */ 429 #if (VMW_PPN_SIZE == 8) 430 static void vmw_mob_assign_ppn(__le32 **addr, dma_addr_t val) 431 { 432 *((__le64 *) *addr) = cpu_to_le64(val >> PAGE_SHIFT); 433 *addr += 2; 434 } 435 #else 436 static void vmw_mob_assign_ppn(__le32 **addr, dma_addr_t val) 437 { 438 *(*addr)++ = cpu_to_le32(val >> PAGE_SHIFT); 439 } 440 #endif 441 442 /* 443 * vmw_mob_build_pt - Build a pagetable 444 * 445 * @data_addr: Array of DMA addresses to the underlying buffer 446 * object's data pages. 447 * @num_data_pages: Number of buffer object data pages. 448 * @pt_pages: Array of page pointers to the page table pages. 449 * 450 * Returns the number of page table pages actually used. 451 * Uses atomic kmaps of highmem pages to avoid TLB thrashing. 452 */ 453 static unsigned long vmw_mob_build_pt(struct vmw_piter *data_iter, 454 unsigned long num_data_pages, 455 struct vmw_piter *pt_iter) 456 { 457 unsigned long pt_size = num_data_pages * VMW_PPN_SIZE; 458 unsigned long num_pt_pages = DIV_ROUND_UP(pt_size, PAGE_SIZE); 459 unsigned long pt_page; 460 __le32 *addr, *save_addr; 461 unsigned long i; 462 struct page *page; 463 464 for (pt_page = 0; pt_page < num_pt_pages; ++pt_page) { 465 page = vmw_piter_page(pt_iter); 466 467 save_addr = addr = kmap_atomic(page); 468 469 for (i = 0; i < PAGE_SIZE / VMW_PPN_SIZE; ++i) { 470 vmw_mob_assign_ppn(&addr, 471 vmw_piter_dma_addr(data_iter)); 472 if (unlikely(--num_data_pages == 0)) 473 break; 474 WARN_ON(!vmw_piter_next(data_iter)); 475 } 476 kunmap_atomic(save_addr); 477 vmw_piter_next(pt_iter); 478 } 479 480 return num_pt_pages; 481 } 482 483 /* 484 * vmw_mob_build_pt - Set up a multilevel mob pagetable 485 * 486 * @mob: Pointer to a mob whose page table needs setting up. 487 * @data_addr Array of DMA addresses to the buffer object's data 488 * pages. 489 * @num_data_pages: Number of buffer object data pages. 490 * 491 * Uses tail recursion to set up a multilevel mob page table. 492 */ 493 static void vmw_mob_pt_setup(struct vmw_mob *mob, 494 struct vmw_piter data_iter, 495 unsigned long num_data_pages) 496 { 497 unsigned long num_pt_pages = 0; 498 struct ttm_buffer_object *bo = mob->pt_bo; 499 struct vmw_piter save_pt_iter; 500 struct vmw_piter pt_iter; 501 const struct vmw_sg_table *vsgt; 502 int ret; 503 504 ret = ttm_bo_reserve(bo, false, true, false, NULL); 505 BUG_ON(ret != 0); 506 507 vsgt = vmw_bo_sg_table(bo); 508 vmw_piter_start(&pt_iter, vsgt, 0); 509 BUG_ON(!vmw_piter_next(&pt_iter)); 510 mob->pt_level = 0; 511 while (likely(num_data_pages > 1)) { 512 ++mob->pt_level; 513 BUG_ON(mob->pt_level > 2); 514 save_pt_iter = pt_iter; 515 num_pt_pages = vmw_mob_build_pt(&data_iter, num_data_pages, 516 &pt_iter); 517 data_iter = save_pt_iter; 518 num_data_pages = num_pt_pages; 519 } 520 521 mob->pt_root_page = vmw_piter_dma_addr(&save_pt_iter); 522 ttm_bo_unreserve(bo); 523 } 524 525 /* 526 * vmw_mob_destroy - Destroy a mob, unpopulating first if necessary. 527 * 528 * @mob: Pointer to a mob to destroy. 529 */ 530 void vmw_mob_destroy(struct vmw_mob *mob) 531 { 532 if (mob->pt_bo) 533 ttm_bo_unref(&mob->pt_bo); 534 kfree(mob); 535 } 536 537 /* 538 * vmw_mob_unbind - Hide a mob from the device. 539 * 540 * @dev_priv: Pointer to a device private. 541 * @mob_id: Device id of the mob to unbind. 542 */ 543 void vmw_mob_unbind(struct vmw_private *dev_priv, 544 struct vmw_mob *mob) 545 { 546 struct { 547 SVGA3dCmdHeader header; 548 SVGA3dCmdDestroyGBMob body; 549 } *cmd; 550 int ret; 551 struct ttm_buffer_object *bo = mob->pt_bo; 552 553 if (bo) { 554 ret = ttm_bo_reserve(bo, false, true, false, NULL); 555 /* 556 * Noone else should be using this buffer. 557 */ 558 BUG_ON(ret != 0); 559 } 560 561 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 562 if (unlikely(cmd == NULL)) { 563 DRM_ERROR("Failed reserving FIFO space for Memory " 564 "Object unbinding.\n"); 565 } 566 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_MOB; 567 cmd->header.size = sizeof(cmd->body); 568 cmd->body.mobid = mob->id; 569 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 570 if (bo) { 571 vmw_fence_single_bo(bo, NULL); 572 ttm_bo_unreserve(bo); 573 } 574 vmw_3d_resource_dec(dev_priv, false); 575 } 576 577 /* 578 * vmw_mob_bind - Make a mob visible to the device after first 579 * populating it if necessary. 580 * 581 * @dev_priv: Pointer to a device private. 582 * @mob: Pointer to the mob we're making visible. 583 * @data_addr: Array of DMA addresses to the data pages of the underlying 584 * buffer object. 585 * @num_data_pages: Number of data pages of the underlying buffer 586 * object. 587 * @mob_id: Device id of the mob to bind 588 * 589 * This function is intended to be interfaced with the ttm_tt backend 590 * code. 591 */ 592 int vmw_mob_bind(struct vmw_private *dev_priv, 593 struct vmw_mob *mob, 594 const struct vmw_sg_table *vsgt, 595 unsigned long num_data_pages, 596 int32_t mob_id) 597 { 598 int ret; 599 bool pt_set_up = false; 600 struct vmw_piter data_iter; 601 struct { 602 SVGA3dCmdHeader header; 603 SVGA3dCmdDefineGBMob64 body; 604 } *cmd; 605 606 mob->id = mob_id; 607 vmw_piter_start(&data_iter, vsgt, 0); 608 if (unlikely(!vmw_piter_next(&data_iter))) 609 return 0; 610 611 if (likely(num_data_pages == 1)) { 612 mob->pt_level = VMW_MOBFMT_PTDEPTH_0; 613 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 614 } else if (vsgt->num_regions == 1) { 615 mob->pt_level = SVGA3D_MOBFMT_RANGE; 616 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 617 } else if (unlikely(mob->pt_bo == NULL)) { 618 ret = vmw_mob_pt_populate(dev_priv, mob); 619 if (unlikely(ret != 0)) 620 return ret; 621 622 vmw_mob_pt_setup(mob, data_iter, num_data_pages); 623 pt_set_up = true; 624 mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; 625 } 626 627 (void) vmw_3d_resource_inc(dev_priv, false); 628 629 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 630 if (unlikely(cmd == NULL)) { 631 DRM_ERROR("Failed reserving FIFO space for Memory " 632 "Object binding.\n"); 633 goto out_no_cmd_space; 634 } 635 636 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_MOB64; 637 cmd->header.size = sizeof(cmd->body); 638 cmd->body.mobid = mob_id; 639 cmd->body.ptDepth = mob->pt_level; 640 cmd->body.base = cpu_to_le64(mob->pt_root_page >> PAGE_SHIFT); 641 cmd->body.sizeInBytes = num_data_pages * PAGE_SIZE; 642 643 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 644 645 return 0; 646 647 out_no_cmd_space: 648 vmw_3d_resource_dec(dev_priv, false); 649 if (pt_set_up) 650 ttm_bo_unref(&mob->pt_bo); 651 652 return -ENOMEM; 653 } 654