1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /************************************************************************** 3 * 4 * Copyright 2012-2015 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 <linux/highmem.h> 29 30 #include "vmwgfx_drv.h" 31 32 /* 33 * If we set up the screen target otable, screen objects stop working. 34 */ 35 36 #define VMW_OTABLE_SETUP_SUB ((VMWGFX_ENABLE_SCREEN_TARGET_OTABLE ? 0 : 1)) 37 38 #ifdef CONFIG_64BIT 39 #define VMW_PPN_SIZE 8 40 #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH64_0 41 #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH64_1 42 #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH64_2 43 #else 44 #define VMW_PPN_SIZE 4 45 #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH_0 46 #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH_1 47 #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH_2 48 #endif 49 50 /* 51 * struct vmw_mob - Structure containing page table and metadata for a 52 * Guest Memory OBject. 53 * 54 * @num_pages Number of pages that make up the page table. 55 * @pt_level The indirection level of the page table. 0-2. 56 * @pt_root_page DMA address of the level 0 page of the page table. 57 */ 58 struct vmw_mob { 59 struct ttm_buffer_object *pt_bo; 60 unsigned long num_pages; 61 unsigned pt_level; 62 dma_addr_t pt_root_page; 63 uint32_t id; 64 }; 65 66 /* 67 * struct vmw_otable - Guest Memory OBject table metadata 68 * 69 * @size: Size of the table (page-aligned). 70 * @page_table: Pointer to a struct vmw_mob holding the page table. 71 */ 72 static const struct vmw_otable pre_dx_tables[] = { 73 {VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true}, 74 {VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true}, 75 {VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true}, 76 {VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true}, 77 {VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE, 78 NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE} 79 }; 80 81 static const struct vmw_otable dx_tables[] = { 82 {VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true}, 83 {VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true}, 84 {VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true}, 85 {VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true}, 86 {VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE, 87 NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE}, 88 {VMWGFX_NUM_DXCONTEXT * sizeof(SVGAOTableDXContextEntry), NULL, true}, 89 }; 90 91 static int vmw_mob_pt_populate(struct vmw_private *dev_priv, 92 struct vmw_mob *mob); 93 static void vmw_mob_pt_setup(struct vmw_mob *mob, 94 struct vmw_piter data_iter, 95 unsigned long num_data_pages); 96 97 /* 98 * vmw_setup_otable_base - Issue an object table base setup command to 99 * the device 100 * 101 * @dev_priv: Pointer to a device private structure 102 * @type: Type of object table base 103 * @offset Start of table offset into dev_priv::otable_bo 104 * @otable Pointer to otable metadata; 105 * 106 * This function returns -ENOMEM if it fails to reserve fifo space, 107 * and may block waiting for fifo space. 108 */ 109 static int vmw_setup_otable_base(struct vmw_private *dev_priv, 110 SVGAOTableType type, 111 struct ttm_buffer_object *otable_bo, 112 unsigned long offset, 113 struct vmw_otable *otable) 114 { 115 struct { 116 SVGA3dCmdHeader header; 117 SVGA3dCmdSetOTableBase64 body; 118 } *cmd; 119 struct vmw_mob *mob; 120 const struct vmw_sg_table *vsgt; 121 struct vmw_piter iter; 122 int ret; 123 124 BUG_ON(otable->page_table != NULL); 125 126 vsgt = vmw_bo_sg_table(otable_bo); 127 vmw_piter_start(&iter, vsgt, offset >> PAGE_SHIFT); 128 WARN_ON(!vmw_piter_next(&iter)); 129 130 mob = vmw_mob_create(otable->size >> PAGE_SHIFT); 131 if (unlikely(mob == NULL)) { 132 DRM_ERROR("Failed creating OTable page table.\n"); 133 return -ENOMEM; 134 } 135 136 if (otable->size <= PAGE_SIZE) { 137 mob->pt_level = VMW_MOBFMT_PTDEPTH_0; 138 mob->pt_root_page = vmw_piter_dma_addr(&iter); 139 } else if (vsgt->num_regions == 1) { 140 mob->pt_level = SVGA3D_MOBFMT_RANGE; 141 mob->pt_root_page = vmw_piter_dma_addr(&iter); 142 } else { 143 ret = vmw_mob_pt_populate(dev_priv, mob); 144 if (unlikely(ret != 0)) 145 goto out_no_populate; 146 147 vmw_mob_pt_setup(mob, iter, otable->size >> PAGE_SHIFT); 148 mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; 149 } 150 151 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); 152 if (unlikely(cmd == NULL)) { 153 ret = -ENOMEM; 154 goto out_no_fifo; 155 } 156 157 memset(cmd, 0, sizeof(*cmd)); 158 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE64; 159 cmd->header.size = sizeof(cmd->body); 160 cmd->body.type = type; 161 cmd->body.baseAddress = mob->pt_root_page >> PAGE_SHIFT; 162 cmd->body.sizeInBytes = otable->size; 163 cmd->body.validSizeInBytes = 0; 164 cmd->body.ptDepth = mob->pt_level; 165 166 /* 167 * The device doesn't support this, But the otable size is 168 * determined at compile-time, so this BUG shouldn't trigger 169 * randomly. 170 */ 171 BUG_ON(mob->pt_level == VMW_MOBFMT_PTDEPTH_2); 172 173 vmw_cmd_commit(dev_priv, sizeof(*cmd)); 174 otable->page_table = mob; 175 176 return 0; 177 178 out_no_fifo: 179 out_no_populate: 180 vmw_mob_destroy(mob); 181 return ret; 182 } 183 184 /* 185 * vmw_takedown_otable_base - Issue an object table base takedown command 186 * to the device 187 * 188 * @dev_priv: Pointer to a device private structure 189 * @type: Type of object table base 190 * 191 */ 192 static void vmw_takedown_otable_base(struct vmw_private *dev_priv, 193 SVGAOTableType type, 194 struct vmw_otable *otable) 195 { 196 struct { 197 SVGA3dCmdHeader header; 198 SVGA3dCmdSetOTableBase body; 199 } *cmd; 200 struct ttm_buffer_object *bo; 201 202 if (otable->page_table == NULL) 203 return; 204 205 bo = otable->page_table->pt_bo; 206 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); 207 if (unlikely(cmd == NULL)) 208 return; 209 210 memset(cmd, 0, sizeof(*cmd)); 211 cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE; 212 cmd->header.size = sizeof(cmd->body); 213 cmd->body.type = type; 214 cmd->body.baseAddress = 0; 215 cmd->body.sizeInBytes = 0; 216 cmd->body.validSizeInBytes = 0; 217 cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID; 218 vmw_cmd_commit(dev_priv, sizeof(*cmd)); 219 220 if (bo) { 221 int ret; 222 223 ret = ttm_bo_reserve(bo, false, true, NULL); 224 BUG_ON(ret != 0); 225 226 vmw_bo_fence_single(bo, NULL); 227 ttm_bo_unreserve(bo); 228 } 229 230 vmw_mob_destroy(otable->page_table); 231 otable->page_table = NULL; 232 } 233 234 235 static int vmw_otable_batch_setup(struct vmw_private *dev_priv, 236 struct vmw_otable_batch *batch) 237 { 238 unsigned long offset; 239 unsigned long bo_size; 240 struct vmw_otable *otables = batch->otables; 241 SVGAOTableType i; 242 int ret; 243 244 bo_size = 0; 245 for (i = 0; i < batch->num_otables; ++i) { 246 if (!otables[i].enabled) 247 continue; 248 249 otables[i].size = 250 (otables[i].size + PAGE_SIZE - 1) & PAGE_MASK; 251 bo_size += otables[i].size; 252 } 253 254 ret = vmw_bo_create_and_populate(dev_priv, bo_size, &batch->otable_bo); 255 if (unlikely(ret != 0)) 256 return ret; 257 258 offset = 0; 259 for (i = 0; i < batch->num_otables; ++i) { 260 if (!batch->otables[i].enabled) 261 continue; 262 263 ret = vmw_setup_otable_base(dev_priv, i, batch->otable_bo, 264 offset, 265 &otables[i]); 266 if (unlikely(ret != 0)) 267 goto out_no_setup; 268 offset += otables[i].size; 269 } 270 271 return 0; 272 273 out_no_setup: 274 for (i = 0; i < batch->num_otables; ++i) { 275 if (batch->otables[i].enabled) 276 vmw_takedown_otable_base(dev_priv, i, 277 &batch->otables[i]); 278 } 279 280 ttm_bo_unpin(batch->otable_bo); 281 ttm_bo_put(batch->otable_bo); 282 batch->otable_bo = NULL; 283 return ret; 284 } 285 286 /* 287 * vmw_otables_setup - Set up guest backed memory object tables 288 * 289 * @dev_priv: Pointer to a device private structure 290 * 291 * Takes care of the device guest backed surface 292 * initialization, by setting up the guest backed memory object tables. 293 * Returns 0 on success and various error codes on failure. A successful return 294 * means the object tables can be taken down using the vmw_otables_takedown 295 * function. 296 */ 297 int vmw_otables_setup(struct vmw_private *dev_priv) 298 { 299 struct vmw_otable **otables = &dev_priv->otable_batch.otables; 300 int ret; 301 302 if (has_sm4_context(dev_priv)) { 303 *otables = kmemdup(dx_tables, sizeof(dx_tables), GFP_KERNEL); 304 if (!(*otables)) 305 return -ENOMEM; 306 307 dev_priv->otable_batch.num_otables = ARRAY_SIZE(dx_tables); 308 } else { 309 *otables = kmemdup(pre_dx_tables, sizeof(pre_dx_tables), 310 GFP_KERNEL); 311 if (!(*otables)) 312 return -ENOMEM; 313 314 dev_priv->otable_batch.num_otables = ARRAY_SIZE(pre_dx_tables); 315 } 316 317 ret = vmw_otable_batch_setup(dev_priv, &dev_priv->otable_batch); 318 if (unlikely(ret != 0)) 319 goto out_setup; 320 321 return 0; 322 323 out_setup: 324 kfree(*otables); 325 return ret; 326 } 327 328 static void vmw_otable_batch_takedown(struct vmw_private *dev_priv, 329 struct vmw_otable_batch *batch) 330 { 331 SVGAOTableType i; 332 struct ttm_buffer_object *bo = batch->otable_bo; 333 int ret; 334 335 for (i = 0; i < batch->num_otables; ++i) 336 if (batch->otables[i].enabled) 337 vmw_takedown_otable_base(dev_priv, i, 338 &batch->otables[i]); 339 340 ret = ttm_bo_reserve(bo, false, true, NULL); 341 BUG_ON(ret != 0); 342 343 vmw_bo_fence_single(bo, NULL); 344 ttm_bo_unreserve(bo); 345 346 ttm_bo_unpin(batch->otable_bo); 347 ttm_bo_put(batch->otable_bo); 348 batch->otable_bo = NULL; 349 } 350 351 /* 352 * vmw_otables_takedown - Take down guest backed memory object tables 353 * 354 * @dev_priv: Pointer to a device private structure 355 * 356 * Take down the Guest Memory Object tables. 357 */ 358 void vmw_otables_takedown(struct vmw_private *dev_priv) 359 { 360 vmw_otable_batch_takedown(dev_priv, &dev_priv->otable_batch); 361 kfree(dev_priv->otable_batch.otables); 362 } 363 364 /* 365 * vmw_mob_calculate_pt_pages - Calculate the number of page table pages 366 * needed for a guest backed memory object. 367 * 368 * @data_pages: Number of data pages in the memory object buffer. 369 */ 370 static unsigned long vmw_mob_calculate_pt_pages(unsigned long data_pages) 371 { 372 unsigned long data_size = data_pages * PAGE_SIZE; 373 unsigned long tot_size = 0; 374 375 while (likely(data_size > PAGE_SIZE)) { 376 data_size = DIV_ROUND_UP(data_size, PAGE_SIZE); 377 data_size *= VMW_PPN_SIZE; 378 tot_size += (data_size + PAGE_SIZE - 1) & PAGE_MASK; 379 } 380 381 return tot_size >> PAGE_SHIFT; 382 } 383 384 /* 385 * vmw_mob_create - Create a mob, but don't populate it. 386 * 387 * @data_pages: Number of data pages of the underlying buffer object. 388 */ 389 struct vmw_mob *vmw_mob_create(unsigned long data_pages) 390 { 391 struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL); 392 393 if (unlikely(!mob)) 394 return NULL; 395 396 mob->num_pages = vmw_mob_calculate_pt_pages(data_pages); 397 398 return mob; 399 } 400 401 /* 402 * vmw_mob_pt_populate - Populate the mob pagetable 403 * 404 * @mob: Pointer to the mob the pagetable of which we want to 405 * populate. 406 * 407 * This function allocates memory to be used for the pagetable, and 408 * adjusts TTM memory accounting accordingly. Returns ENOMEM if 409 * memory resources aren't sufficient and may cause TTM buffer objects 410 * to be swapped out by using the TTM memory accounting function. 411 */ 412 static int vmw_mob_pt_populate(struct vmw_private *dev_priv, 413 struct vmw_mob *mob) 414 { 415 BUG_ON(mob->pt_bo != NULL); 416 417 return vmw_bo_create_and_populate(dev_priv, mob->num_pages * PAGE_SIZE, &mob->pt_bo); 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(u32 **addr, dma_addr_t val) 431 { 432 *((u64 *) *addr) = val >> PAGE_SHIFT; 433 *addr += 2; 434 } 435 #else 436 static void vmw_mob_assign_ppn(u32 **addr, dma_addr_t val) 437 { 438 *(*addr)++ = 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 u32 *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, 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_unpin(mob->pt_bo); 534 ttm_bo_put(mob->pt_bo); 535 mob->pt_bo = NULL; 536 } 537 kfree(mob); 538 } 539 540 /* 541 * vmw_mob_unbind - Hide a mob from the device. 542 * 543 * @dev_priv: Pointer to a device private. 544 * @mob_id: Device id of the mob to unbind. 545 */ 546 void vmw_mob_unbind(struct vmw_private *dev_priv, 547 struct vmw_mob *mob) 548 { 549 struct { 550 SVGA3dCmdHeader header; 551 SVGA3dCmdDestroyGBMob body; 552 } *cmd; 553 int ret; 554 struct ttm_buffer_object *bo = mob->pt_bo; 555 556 if (bo) { 557 ret = ttm_bo_reserve(bo, false, true, NULL); 558 /* 559 * Noone else should be using this buffer. 560 */ 561 BUG_ON(ret != 0); 562 } 563 564 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); 565 if (cmd) { 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_cmd_commit(dev_priv, sizeof(*cmd)); 570 } 571 572 if (bo) { 573 vmw_bo_fence_single(bo, NULL); 574 ttm_bo_unreserve(bo); 575 } 576 vmw_fifo_resource_dec(dev_priv); 577 } 578 579 /* 580 * vmw_mob_bind - Make a mob visible to the device after first 581 * populating it if necessary. 582 * 583 * @dev_priv: Pointer to a device private. 584 * @mob: Pointer to the mob we're making visible. 585 * @data_addr: Array of DMA addresses to the data pages of the underlying 586 * buffer object. 587 * @num_data_pages: Number of data pages of the underlying buffer 588 * object. 589 * @mob_id: Device id of the mob to bind 590 * 591 * This function is intended to be interfaced with the ttm_tt backend 592 * code. 593 */ 594 int vmw_mob_bind(struct vmw_private *dev_priv, 595 struct vmw_mob *mob, 596 const struct vmw_sg_table *vsgt, 597 unsigned long num_data_pages, 598 int32_t mob_id) 599 { 600 int ret; 601 bool pt_set_up = false; 602 struct vmw_piter data_iter; 603 struct { 604 SVGA3dCmdHeader header; 605 SVGA3dCmdDefineGBMob64 body; 606 } *cmd; 607 608 mob->id = mob_id; 609 vmw_piter_start(&data_iter, vsgt, 0); 610 if (unlikely(!vmw_piter_next(&data_iter))) 611 return 0; 612 613 if (likely(num_data_pages == 1)) { 614 mob->pt_level = VMW_MOBFMT_PTDEPTH_0; 615 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 616 } else if (vsgt->num_regions == 1) { 617 mob->pt_level = SVGA3D_MOBFMT_RANGE; 618 mob->pt_root_page = vmw_piter_dma_addr(&data_iter); 619 } else if (unlikely(mob->pt_bo == NULL)) { 620 ret = vmw_mob_pt_populate(dev_priv, mob); 621 if (unlikely(ret != 0)) 622 return ret; 623 624 vmw_mob_pt_setup(mob, data_iter, num_data_pages); 625 pt_set_up = true; 626 mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; 627 } 628 629 vmw_fifo_resource_inc(dev_priv); 630 631 cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); 632 if (unlikely(cmd == NULL)) 633 goto out_no_cmd_space; 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 = mob->pt_root_page >> PAGE_SHIFT; 640 cmd->body.sizeInBytes = num_data_pages * PAGE_SIZE; 641 642 vmw_cmd_commit(dev_priv, sizeof(*cmd)); 643 644 return 0; 645 646 out_no_cmd_space: 647 vmw_fifo_resource_dec(dev_priv); 648 if (pt_set_up) { 649 ttm_bo_unpin(mob->pt_bo); 650 ttm_bo_put(mob->pt_bo); 651 mob->pt_bo = NULL; 652 } 653 654 return -ENOMEM; 655 } 656