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 goto out_no_fifo; 138 } 139 140 memset(cmd, 0, sizeof(*cmd)); 141 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE64; 142 cmd->header.size = sizeof(cmd->body); 143 cmd->body.type = type; 144 cmd->body.baseAddress = cpu_to_le64(mob->pt_root_page >> PAGE_SHIFT); 145 cmd->body.sizeInBytes = otable->size; 146 cmd->body.validSizeInBytes = 0; 147 cmd->body.ptDepth = mob->pt_level; 148 149 /* 150 * The device doesn't support this, But the otable size is 151 * determined at compile-time, so this BUG shouldn't trigger 152 * randomly. 153 */ 154 BUG_ON(mob->pt_level == VMW_MOBFMT_PTDEPTH_2); 155 156 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 157 otable->page_table = mob; 158 159 return 0; 160 161 out_no_fifo: 162 out_no_populate: 163 vmw_mob_destroy(mob); 164 return ret; 165 } 166 167 /* 168 * vmw_takedown_otable_base - Issue an object table base takedown command 169 * to the device 170 * 171 * @dev_priv: Pointer to a device private structure 172 * @type: Type of object table base 173 * 174 */ 175 static void vmw_takedown_otable_base(struct vmw_private *dev_priv, 176 SVGAOTableType type, 177 struct vmw_otable *otable) 178 { 179 struct { 180 SVGA3dCmdHeader header; 181 SVGA3dCmdSetOTableBase body; 182 } *cmd; 183 struct ttm_buffer_object *bo; 184 185 if (otable->page_table == NULL) 186 return; 187 188 bo = otable->page_table->pt_bo; 189 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 190 if (unlikely(cmd == NULL)) 191 DRM_ERROR("Failed reserving FIFO space for OTable setup.\n"); 192 193 memset(cmd, 0, sizeof(*cmd)); 194 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE; 195 cmd->header.size = sizeof(cmd->body); 196 cmd->body.type = type; 197 cmd->body.baseAddress = 0; 198 cmd->body.sizeInBytes = 0; 199 cmd->body.validSizeInBytes = 0; 200 cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID; 201 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 202 203 if (bo) { 204 int ret; 205 206 ret = ttm_bo_reserve(bo, false, true, false, NULL); 207 BUG_ON(ret != 0); 208 209 vmw_fence_single_bo(bo, NULL); 210 ttm_bo_unreserve(bo); 211 } 212 213 vmw_mob_destroy(otable->page_table); 214 otable->page_table = NULL; 215 } 216 217 /* 218 * vmw_otables_setup - Set up guest backed memory object tables 219 * 220 * @dev_priv: Pointer to a device private structure 221 * 222 * Takes care of the device guest backed surface 223 * initialization, by setting up the guest backed memory object tables. 224 * Returns 0 on success and various error codes on failure. A succesful return 225 * means the object tables can be taken down using the vmw_otables_takedown 226 * function. 227 */ 228 int vmw_otables_setup(struct vmw_private *dev_priv) 229 { 230 unsigned long offset; 231 unsigned long bo_size; 232 struct vmw_otable *otables; 233 SVGAOTableType i; 234 int ret; 235 236 otables = kzalloc(SVGA_OTABLE_DX9_MAX * sizeof(*otables), 237 GFP_KERNEL); 238 if (unlikely(otables == NULL)) { 239 DRM_ERROR("Failed to allocate space for otable " 240 "metadata.\n"); 241 return -ENOMEM; 242 } 243 244 otables[SVGA_OTABLE_MOB].size = 245 VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE; 246 otables[SVGA_OTABLE_SURFACE].size = 247 VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE; 248 otables[SVGA_OTABLE_CONTEXT].size = 249 VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE; 250 otables[SVGA_OTABLE_SHADER].size = 251 VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE; 252 otables[SVGA_OTABLE_SCREEN_TARGET].size = 253 VMWGFX_NUM_GB_SCREEN_TARGET * 254 SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE; 255 256 bo_size = 0; 257 for (i = 0; i < SVGA_OTABLE_DX9_MAX; ++i) { 258 otables[i].size = 259 (otables[i].size + PAGE_SIZE - 1) & PAGE_MASK; 260 bo_size += otables[i].size; 261 } 262 263 ret = ttm_bo_create(&dev_priv->bdev, bo_size, 264 ttm_bo_type_device, 265 &vmw_sys_ne_placement, 266 0, false, NULL, 267 &dev_priv->otable_bo); 268 269 if (unlikely(ret != 0)) 270 goto out_no_bo; 271 272 ret = ttm_bo_reserve(dev_priv->otable_bo, false, true, false, NULL); 273 BUG_ON(ret != 0); 274 ret = vmw_bo_driver.ttm_tt_populate(dev_priv->otable_bo->ttm); 275 if (unlikely(ret != 0)) 276 goto out_unreserve; 277 ret = vmw_bo_map_dma(dev_priv->otable_bo); 278 if (unlikely(ret != 0)) 279 goto out_unreserve; 280 281 ttm_bo_unreserve(dev_priv->otable_bo); 282 283 offset = 0; 284 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) { 285 ret = vmw_setup_otable_base(dev_priv, i, offset, 286 &otables[i]); 287 if (unlikely(ret != 0)) 288 goto out_no_setup; 289 offset += otables[i].size; 290 } 291 292 dev_priv->otables = otables; 293 return 0; 294 295 out_unreserve: 296 ttm_bo_unreserve(dev_priv->otable_bo); 297 out_no_setup: 298 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) 299 vmw_takedown_otable_base(dev_priv, i, &otables[i]); 300 301 ttm_bo_unref(&dev_priv->otable_bo); 302 out_no_bo: 303 kfree(otables); 304 return ret; 305 } 306 307 308 /* 309 * vmw_otables_takedown - Take down guest backed memory object tables 310 * 311 * @dev_priv: Pointer to a device private structure 312 * 313 * Take down the Guest Memory Object tables. 314 */ 315 void vmw_otables_takedown(struct vmw_private *dev_priv) 316 { 317 SVGAOTableType i; 318 struct ttm_buffer_object *bo = dev_priv->otable_bo; 319 int ret; 320 321 for (i = 0; i < SVGA_OTABLE_DX9_MAX - VMW_OTABLE_SETUP_SUB; ++i) 322 vmw_takedown_otable_base(dev_priv, i, 323 &dev_priv->otables[i]); 324 325 ret = ttm_bo_reserve(bo, false, true, false, NULL); 326 BUG_ON(ret != 0); 327 328 vmw_fence_single_bo(bo, NULL); 329 ttm_bo_unreserve(bo); 330 331 ttm_bo_unref(&dev_priv->otable_bo); 332 kfree(dev_priv->otables); 333 dev_priv->otables = NULL; 334 } 335 336 337 /* 338 * vmw_mob_calculate_pt_pages - Calculate the number of page table pages 339 * needed for a guest backed memory object. 340 * 341 * @data_pages: Number of data pages in the memory object buffer. 342 */ 343 static unsigned long vmw_mob_calculate_pt_pages(unsigned long data_pages) 344 { 345 unsigned long data_size = data_pages * PAGE_SIZE; 346 unsigned long tot_size = 0; 347 348 while (likely(data_size > PAGE_SIZE)) { 349 data_size = DIV_ROUND_UP(data_size, PAGE_SIZE); 350 data_size *= VMW_PPN_SIZE; 351 tot_size += (data_size + PAGE_SIZE - 1) & PAGE_MASK; 352 } 353 354 return tot_size >> PAGE_SHIFT; 355 } 356 357 /* 358 * vmw_mob_create - Create a mob, but don't populate it. 359 * 360 * @data_pages: Number of data pages of the underlying buffer object. 361 */ 362 struct vmw_mob *vmw_mob_create(unsigned long data_pages) 363 { 364 struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL); 365 366 if (unlikely(mob == NULL)) 367 return NULL; 368 369 mob->num_pages = vmw_mob_calculate_pt_pages(data_pages); 370 371 return mob; 372 } 373 374 /* 375 * vmw_mob_pt_populate - Populate the mob pagetable 376 * 377 * @mob: Pointer to the mob the pagetable of which we want to 378 * populate. 379 * 380 * This function allocates memory to be used for the pagetable, and 381 * adjusts TTM memory accounting accordingly. Returns ENOMEM if 382 * memory resources aren't sufficient and may cause TTM buffer objects 383 * to be swapped out by using the TTM memory accounting function. 384 */ 385 static int vmw_mob_pt_populate(struct vmw_private *dev_priv, 386 struct vmw_mob *mob) 387 { 388 int ret; 389 BUG_ON(mob->pt_bo != NULL); 390 391 ret = ttm_bo_create(&dev_priv->bdev, mob->num_pages * PAGE_SIZE, 392 ttm_bo_type_device, 393 &vmw_sys_ne_placement, 394 0, false, NULL, &mob->pt_bo); 395 if (unlikely(ret != 0)) 396 return ret; 397 398 ret = ttm_bo_reserve(mob->pt_bo, false, true, false, NULL); 399 400 BUG_ON(ret != 0); 401 ret = vmw_bo_driver.ttm_tt_populate(mob->pt_bo->ttm); 402 if (unlikely(ret != 0)) 403 goto out_unreserve; 404 ret = vmw_bo_map_dma(mob->pt_bo); 405 if (unlikely(ret != 0)) 406 goto out_unreserve; 407 408 ttm_bo_unreserve(mob->pt_bo); 409 410 return 0; 411 412 out_unreserve: 413 ttm_bo_unreserve(mob->pt_bo); 414 ttm_bo_unref(&mob->pt_bo); 415 416 return ret; 417 } 418 419 /** 420 * vmw_mob_assign_ppn - Assign a value to a page table entry 421 * 422 * @addr: Pointer to pointer to page table entry. 423 * @val: The page table entry 424 * 425 * Assigns a value to a page table entry pointed to by *@addr and increments 426 * *@addr according to the page table entry size. 427 */ 428 #if (VMW_PPN_SIZE == 8) 429 static void vmw_mob_assign_ppn(__le32 **addr, dma_addr_t val) 430 { 431 *((__le64 *) *addr) = cpu_to_le64(val >> PAGE_SHIFT); 432 *addr += 2; 433 } 434 #else 435 static void vmw_mob_assign_ppn(__le32 **addr, dma_addr_t val) 436 { 437 *(*addr)++ = cpu_to_le32(val >> PAGE_SHIFT); 438 } 439 #endif 440 441 /* 442 * vmw_mob_build_pt - Build a pagetable 443 * 444 * @data_addr: Array of DMA addresses to the underlying buffer 445 * object's data pages. 446 * @num_data_pages: Number of buffer object data pages. 447 * @pt_pages: Array of page pointers to the page table pages. 448 * 449 * Returns the number of page table pages actually used. 450 * Uses atomic kmaps of highmem pages to avoid TLB thrashing. 451 */ 452 static unsigned long vmw_mob_build_pt(struct vmw_piter *data_iter, 453 unsigned long num_data_pages, 454 struct vmw_piter *pt_iter) 455 { 456 unsigned long pt_size = num_data_pages * VMW_PPN_SIZE; 457 unsigned long num_pt_pages = DIV_ROUND_UP(pt_size, PAGE_SIZE); 458 unsigned long pt_page; 459 __le32 *addr, *save_addr; 460 unsigned long i; 461 struct page *page; 462 463 for (pt_page = 0; pt_page < num_pt_pages; ++pt_page) { 464 page = vmw_piter_page(pt_iter); 465 466 save_addr = addr = kmap_atomic(page); 467 468 for (i = 0; i < PAGE_SIZE / VMW_PPN_SIZE; ++i) { 469 vmw_mob_assign_ppn(&addr, 470 vmw_piter_dma_addr(data_iter)); 471 if (unlikely(--num_data_pages == 0)) 472 break; 473 WARN_ON(!vmw_piter_next(data_iter)); 474 } 475 kunmap_atomic(save_addr); 476 vmw_piter_next(pt_iter); 477 } 478 479 return num_pt_pages; 480 } 481 482 /* 483 * vmw_mob_build_pt - Set up a multilevel mob pagetable 484 * 485 * @mob: Pointer to a mob whose page table needs setting up. 486 * @data_addr Array of DMA addresses to the buffer object's data 487 * pages. 488 * @num_data_pages: Number of buffer object data pages. 489 * 490 * Uses tail recursion to set up a multilevel mob page table. 491 */ 492 static void vmw_mob_pt_setup(struct vmw_mob *mob, 493 struct vmw_piter data_iter, 494 unsigned long num_data_pages) 495 { 496 unsigned long num_pt_pages = 0; 497 struct ttm_buffer_object *bo = mob->pt_bo; 498 struct vmw_piter save_pt_iter; 499 struct vmw_piter pt_iter; 500 const struct vmw_sg_table *vsgt; 501 int ret; 502 503 ret = ttm_bo_reserve(bo, false, true, false, NULL); 504 BUG_ON(ret != 0); 505 506 vsgt = vmw_bo_sg_table(bo); 507 vmw_piter_start(&pt_iter, vsgt, 0); 508 BUG_ON(!vmw_piter_next(&pt_iter)); 509 mob->pt_level = 0; 510 while (likely(num_data_pages > 1)) { 511 ++mob->pt_level; 512 BUG_ON(mob->pt_level > 2); 513 save_pt_iter = pt_iter; 514 num_pt_pages = vmw_mob_build_pt(&data_iter, num_data_pages, 515 &pt_iter); 516 data_iter = save_pt_iter; 517 num_data_pages = num_pt_pages; 518 } 519 520 mob->pt_root_page = vmw_piter_dma_addr(&save_pt_iter); 521 ttm_bo_unreserve(bo); 522 } 523 524 /* 525 * vmw_mob_destroy - Destroy a mob, unpopulating first if necessary. 526 * 527 * @mob: Pointer to a mob to destroy. 528 */ 529 void vmw_mob_destroy(struct vmw_mob *mob) 530 { 531 if (mob->pt_bo) 532 ttm_bo_unref(&mob->pt_bo); 533 kfree(mob); 534 } 535 536 /* 537 * vmw_mob_unbind - Hide a mob from the device. 538 * 539 * @dev_priv: Pointer to a device private. 540 * @mob_id: Device id of the mob to unbind. 541 */ 542 void vmw_mob_unbind(struct vmw_private *dev_priv, 543 struct vmw_mob *mob) 544 { 545 struct { 546 SVGA3dCmdHeader header; 547 SVGA3dCmdDestroyGBMob body; 548 } *cmd; 549 int ret; 550 struct ttm_buffer_object *bo = mob->pt_bo; 551 552 if (bo) { 553 ret = ttm_bo_reserve(bo, false, true, false, NULL); 554 /* 555 * Noone else should be using this buffer. 556 */ 557 BUG_ON(ret != 0); 558 } 559 560 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 561 if (unlikely(cmd == NULL)) { 562 DRM_ERROR("Failed reserving FIFO space for Memory " 563 "Object unbinding.\n"); 564 } 565 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_MOB; 566 cmd->header.size = sizeof(cmd->body); 567 cmd->body.mobid = mob->id; 568 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 569 if (bo) { 570 vmw_fence_single_bo(bo, NULL); 571 ttm_bo_unreserve(bo); 572 } 573 vmw_3d_resource_dec(dev_priv, false); 574 } 575 576 /* 577 * vmw_mob_bind - Make a mob visible to the device after first 578 * populating it if necessary. 579 * 580 * @dev_priv: Pointer to a device private. 581 * @mob: Pointer to the mob we're making visible. 582 * @data_addr: Array of DMA addresses to the data pages of the underlying 583 * buffer object. 584 * @num_data_pages: Number of data pages of the underlying buffer 585 * object. 586 * @mob_id: Device id of the mob to bind 587 * 588 * This function is intended to be interfaced with the ttm_tt backend 589 * code. 590 */ 591 int vmw_mob_bind(struct vmw_private *dev_priv, 592 struct vmw_mob *mob, 593 const struct vmw_sg_table *vsgt, 594 unsigned long num_data_pages, 595 int32_t mob_id) 596 { 597 int ret; 598 bool pt_set_up = false; 599 struct vmw_piter data_iter; 600 struct { 601 SVGA3dCmdHeader header; 602 SVGA3dCmdDefineGBMob64 body; 603 } *cmd; 604 605 mob->id = mob_id; 606 vmw_piter_start(&data_iter, vsgt, 0); 607 if (unlikely(!vmw_piter_next(&data_iter))) 608 return 0; 609 610 if (likely(num_data_pages == 1)) { 611 mob->pt_level = VMW_MOBFMT_PTDEPTH_0; 612 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 613 } else if (vsgt->num_regions == 1) { 614 mob->pt_level = SVGA3D_MOBFMT_RANGE; 615 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 616 } else if (unlikely(mob->pt_bo == NULL)) { 617 ret = vmw_mob_pt_populate(dev_priv, mob); 618 if (unlikely(ret != 0)) 619 return ret; 620 621 vmw_mob_pt_setup(mob, data_iter, num_data_pages); 622 pt_set_up = true; 623 mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; 624 } 625 626 (void) vmw_3d_resource_inc(dev_priv, false); 627 628 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); 629 if (unlikely(cmd == NULL)) { 630 DRM_ERROR("Failed reserving FIFO space for Memory " 631 "Object binding.\n"); 632 goto out_no_cmd_space; 633 } 634 635 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_MOB64; 636 cmd->header.size = sizeof(cmd->body); 637 cmd->body.mobid = mob_id; 638 cmd->body.ptDepth = mob->pt_level; 639 cmd->body.base = cpu_to_le64(mob->pt_root_page >> PAGE_SHIFT); 640 cmd->body.sizeInBytes = num_data_pages * PAGE_SIZE; 641 642 vmw_fifo_commit(dev_priv, sizeof(*cmd)); 643 644 return 0; 645 646 out_no_cmd_space: 647 vmw_3d_resource_dec(dev_priv, false); 648 if (pt_set_up) 649 ttm_bo_unref(&mob->pt_bo); 650 651 return -ENOMEM; 652 } 653