1 /* 2 * Copyright 2016 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Christian König 23 */ 24 #ifndef __AMDGPU_VM_H__ 25 #define __AMDGPU_VM_H__ 26 27 #include <linux/idr.h> 28 #include <linux/kfifo.h> 29 #include <linux/rbtree.h> 30 #include <drm/gpu_scheduler.h> 31 #include <drm/drm_file.h> 32 #include <drm/ttm/ttm_bo.h> 33 #include <linux/sched/mm.h> 34 35 #include "amdgpu_sync.h" 36 #include "amdgpu_ring.h" 37 #include "amdgpu_ids.h" 38 #include "amdgpu_ttm.h" 39 40 struct drm_exec; 41 42 struct amdgpu_bo_va; 43 struct amdgpu_job; 44 struct amdgpu_bo_list_entry; 45 struct amdgpu_bo_vm; 46 47 /* 48 * GPUVM handling 49 */ 50 51 /* Maximum number of PTEs the hardware can write with one command */ 52 #define AMDGPU_VM_MAX_UPDATE_SIZE 0x3FFFF 53 54 /* number of entries in page table */ 55 #define AMDGPU_VM_PTE_COUNT(adev) (1 << (adev)->vm_manager.block_size) 56 57 #define AMDGPU_PTE_VALID (1ULL << 0) 58 #define AMDGPU_PTE_SYSTEM (1ULL << 1) 59 #define AMDGPU_PTE_SNOOPED (1ULL << 2) 60 61 /* RV+ */ 62 #define AMDGPU_PTE_TMZ (1ULL << 3) 63 64 /* VI only */ 65 #define AMDGPU_PTE_EXECUTABLE (1ULL << 4) 66 67 #define AMDGPU_PTE_READABLE (1ULL << 5) 68 #define AMDGPU_PTE_WRITEABLE (1ULL << 6) 69 70 #define AMDGPU_PTE_FRAG(x) ((x & 0x1fULL) << 7) 71 72 /* TILED for VEGA10, reserved for older ASICs */ 73 #define AMDGPU_PTE_PRT (1ULL << 51) 74 75 /* PDE is handled as PTE for VEGA10 */ 76 #define AMDGPU_PDE_PTE (1ULL << 54) 77 78 #define AMDGPU_PTE_LOG (1ULL << 55) 79 80 /* PTE is handled as PDE for VEGA10 (Translate Further) */ 81 #define AMDGPU_PTE_TF (1ULL << 56) 82 83 /* MALL noalloc for sienna_cichlid, reserved for older ASICs */ 84 #define AMDGPU_PTE_NOALLOC (1ULL << 58) 85 86 /* PDE Block Fragment Size for VEGA10 */ 87 #define AMDGPU_PDE_BFS(a) ((uint64_t)a << 59) 88 89 /* Flag combination to set no-retry with TF disabled */ 90 #define AMDGPU_VM_NORETRY_FLAGS (AMDGPU_PTE_EXECUTABLE | AMDGPU_PDE_PTE | \ 91 AMDGPU_PTE_TF) 92 93 /* Flag combination to set no-retry with TF enabled */ 94 #define AMDGPU_VM_NORETRY_FLAGS_TF (AMDGPU_PTE_VALID | AMDGPU_PTE_SYSTEM | \ 95 AMDGPU_PTE_PRT) 96 /* For GFX9 */ 97 #define AMDGPU_PTE_MTYPE_VG10_SHIFT(mtype) ((uint64_t)(mtype) << 57) 98 #define AMDGPU_PTE_MTYPE_VG10_MASK AMDGPU_PTE_MTYPE_VG10_SHIFT(3ULL) 99 #define AMDGPU_PTE_MTYPE_VG10(flags, mtype) \ 100 (((uint64_t)(flags) & (~AMDGPU_PTE_MTYPE_VG10_MASK)) | \ 101 AMDGPU_PTE_MTYPE_VG10_SHIFT(mtype)) 102 103 #define AMDGPU_MTYPE_NC 0 104 #define AMDGPU_MTYPE_CC 2 105 106 #define AMDGPU_PTE_DEFAULT_ATC (AMDGPU_PTE_SYSTEM \ 107 | AMDGPU_PTE_SNOOPED \ 108 | AMDGPU_PTE_EXECUTABLE \ 109 | AMDGPU_PTE_READABLE \ 110 | AMDGPU_PTE_WRITEABLE \ 111 | AMDGPU_PTE_MTYPE_VG10(AMDGPU_MTYPE_CC)) 112 113 /* gfx10 */ 114 #define AMDGPU_PTE_MTYPE_NV10_SHIFT(mtype) ((uint64_t)(mtype) << 48) 115 #define AMDGPU_PTE_MTYPE_NV10_MASK AMDGPU_PTE_MTYPE_NV10_SHIFT(7ULL) 116 #define AMDGPU_PTE_MTYPE_NV10(flags, mtype) \ 117 (((uint64_t)(flags) & (~AMDGPU_PTE_MTYPE_NV10_MASK)) | \ 118 AMDGPU_PTE_MTYPE_NV10_SHIFT(mtype)) 119 120 /* gfx12 */ 121 #define AMDGPU_PTE_PRT_GFX12 (1ULL << 56) 122 #define AMDGPU_PTE_PRT_FLAG(adev) \ 123 ((amdgpu_ip_version((adev), GC_HWIP, 0) >= IP_VERSION(12, 0, 0)) ? AMDGPU_PTE_PRT_GFX12 : AMDGPU_PTE_PRT) 124 125 #define AMDGPU_PTE_MTYPE_GFX12_SHIFT(mtype) ((uint64_t)(mtype) << 54) 126 #define AMDGPU_PTE_MTYPE_GFX12_MASK AMDGPU_PTE_MTYPE_GFX12_SHIFT(3ULL) 127 #define AMDGPU_PTE_MTYPE_GFX12(flags, mtype) \ 128 (((uint64_t)(flags) & (~AMDGPU_PTE_MTYPE_GFX12_MASK)) | \ 129 AMDGPU_PTE_MTYPE_GFX12_SHIFT(mtype)) 130 131 #define AMDGPU_PTE_DCC (1ULL << 58) 132 #define AMDGPU_PTE_BUS_ATOMICS (1ULL << 59) 133 #define AMDGPU_PTE_IS_PTE (1ULL << 63) 134 135 /* PDE Block Fragment Size for gfx v12 */ 136 #define AMDGPU_PDE_BFS_GFX12(a) ((uint64_t)((a) & 0x1fULL) << 58) 137 #define AMDGPU_PDE_BFS_FLAG(adev, a) \ 138 ((amdgpu_ip_version((adev), GC_HWIP, 0) >= IP_VERSION(12, 0, 0)) ? AMDGPU_PDE_BFS_GFX12(a) : AMDGPU_PDE_BFS(a)) 139 /* PDE is handled as PTE for gfx v12 */ 140 #define AMDGPU_PDE_PTE_GFX12 (1ULL << 63) 141 #define AMDGPU_PDE_PTE_FLAG(adev) \ 142 ((amdgpu_ip_version((adev), GC_HWIP, 0) >= IP_VERSION(12, 0, 0)) ? AMDGPU_PDE_PTE_GFX12 : AMDGPU_PDE_PTE) 143 144 /* How to program VM fault handling */ 145 #define AMDGPU_VM_FAULT_STOP_NEVER 0 146 #define AMDGPU_VM_FAULT_STOP_FIRST 1 147 #define AMDGPU_VM_FAULT_STOP_ALWAYS 2 148 149 /* How much VRAM be reserved for page tables */ 150 #define AMDGPU_VM_RESERVED_VRAM (8ULL << 20) 151 152 /* 153 * max number of VMHUB 154 * layout: max 8 GFXHUB + 4 MMHUB0 + 1 MMHUB1 155 */ 156 #define AMDGPU_MAX_VMHUBS 13 157 #define AMDGPU_GFXHUB_START 0 158 #define AMDGPU_MMHUB0_START 8 159 #define AMDGPU_MMHUB1_START 12 160 #define AMDGPU_GFXHUB(x) (AMDGPU_GFXHUB_START + (x)) 161 #define AMDGPU_MMHUB0(x) (AMDGPU_MMHUB0_START + (x)) 162 #define AMDGPU_MMHUB1(x) (AMDGPU_MMHUB1_START + (x)) 163 164 #define AMDGPU_IS_GFXHUB(x) ((x) >= AMDGPU_GFXHUB_START && (x) < AMDGPU_MMHUB0_START) 165 #define AMDGPU_IS_MMHUB0(x) ((x) >= AMDGPU_MMHUB0_START && (x) < AMDGPU_MMHUB1_START) 166 #define AMDGPU_IS_MMHUB1(x) ((x) >= AMDGPU_MMHUB1_START && (x) < AMDGPU_MAX_VMHUBS) 167 168 /* Reserve space at top/bottom of address space for kernel use */ 169 #define AMDGPU_VA_RESERVED_CSA_SIZE (2ULL << 20) 170 #define AMDGPU_VA_RESERVED_CSA_START(adev) (((adev)->vm_manager.max_pfn \ 171 << AMDGPU_GPU_PAGE_SHIFT) \ 172 - AMDGPU_VA_RESERVED_CSA_SIZE) 173 #define AMDGPU_VA_RESERVED_SEQ64_SIZE (2ULL << 20) 174 #define AMDGPU_VA_RESERVED_SEQ64_START(adev) (AMDGPU_VA_RESERVED_CSA_START(adev) \ 175 - AMDGPU_VA_RESERVED_SEQ64_SIZE) 176 #define AMDGPU_VA_RESERVED_TRAP_SIZE (2ULL << 12) 177 #define AMDGPU_VA_RESERVED_TRAP_START(adev) (AMDGPU_VA_RESERVED_SEQ64_START(adev) \ 178 - AMDGPU_VA_RESERVED_TRAP_SIZE) 179 #define AMDGPU_VA_RESERVED_BOTTOM (1ULL << 16) 180 #define AMDGPU_VA_RESERVED_TOP (AMDGPU_VA_RESERVED_TRAP_SIZE + \ 181 AMDGPU_VA_RESERVED_SEQ64_SIZE + \ 182 AMDGPU_VA_RESERVED_CSA_SIZE) 183 184 /* See vm_update_mode */ 185 #define AMDGPU_VM_USE_CPU_FOR_GFX (1 << 0) 186 #define AMDGPU_VM_USE_CPU_FOR_COMPUTE (1 << 1) 187 188 /* VMPT level enumerate, and the hiberachy is: 189 * PDB3->PDB2->PDB1->PDB0->PTB 190 */ 191 enum amdgpu_vm_level { 192 AMDGPU_VM_PDB3, 193 AMDGPU_VM_PDB2, 194 AMDGPU_VM_PDB1, 195 AMDGPU_VM_PDB0, 196 AMDGPU_VM_PTB 197 }; 198 199 /* base structure for tracking BO usage in a VM */ 200 struct amdgpu_vm_bo_base { 201 /* constant after initialization */ 202 struct amdgpu_vm *vm; 203 struct amdgpu_bo *bo; 204 205 /* protected by bo being reserved */ 206 struct amdgpu_vm_bo_base *next; 207 208 /* protected by vm status_lock */ 209 struct list_head vm_status; 210 211 /* if the bo is counted as shared in mem stats 212 * protected by vm status_lock */ 213 bool shared; 214 215 /* protected by the BO being reserved */ 216 bool moved; 217 }; 218 219 /* provided by hw blocks that can write ptes, e.g., sdma */ 220 struct amdgpu_vm_pte_funcs { 221 /* number of dw to reserve per operation */ 222 unsigned copy_pte_num_dw; 223 224 /* copy pte entries from GART */ 225 void (*copy_pte)(struct amdgpu_ib *ib, 226 uint64_t pe, uint64_t src, 227 unsigned count); 228 229 /* write pte one entry at a time with addr mapping */ 230 void (*write_pte)(struct amdgpu_ib *ib, uint64_t pe, 231 uint64_t value, unsigned count, 232 uint32_t incr); 233 /* for linear pte/pde updates without addr mapping */ 234 void (*set_pte_pde)(struct amdgpu_ib *ib, 235 uint64_t pe, 236 uint64_t addr, unsigned count, 237 uint32_t incr, uint64_t flags); 238 }; 239 240 struct amdgpu_task_info { 241 struct drm_wedge_task_info task; 242 char process_name[TASK_COMM_LEN]; 243 pid_t tgid; 244 struct kref refcount; 245 }; 246 247 /** 248 * struct amdgpu_vm_update_params 249 * 250 * Encapsulate some VM table update parameters to reduce 251 * the number of function parameters 252 * 253 */ 254 struct amdgpu_vm_update_params { 255 256 /** 257 * @adev: amdgpu device we do this update for 258 */ 259 struct amdgpu_device *adev; 260 261 /** 262 * @vm: optional amdgpu_vm we do this update for 263 */ 264 struct amdgpu_vm *vm; 265 266 /** 267 * @immediate: if changes should be made immediately 268 */ 269 bool immediate; 270 271 /** 272 * @unlocked: true if the root BO is not locked 273 */ 274 bool unlocked; 275 276 /** 277 * @pages_addr: 278 * 279 * DMA addresses to use for mapping 280 */ 281 dma_addr_t *pages_addr; 282 283 /** 284 * @job: job to used for hw submission 285 */ 286 struct amdgpu_job *job; 287 288 /** 289 * @num_dw_left: number of dw left for the IB 290 */ 291 unsigned int num_dw_left; 292 293 /** 294 * @needs_flush: true whenever we need to invalidate the TLB 295 */ 296 bool needs_flush; 297 298 /** 299 * @allow_override: true for memory that is not uncached: allows MTYPE 300 * to be overridden for NUMA local memory. 301 */ 302 bool allow_override; 303 304 /** 305 * @tlb_flush_waitlist: temporary storage for BOs until tlb_flush 306 */ 307 struct list_head tlb_flush_waitlist; 308 }; 309 310 struct amdgpu_vm_update_funcs { 311 int (*map_table)(struct amdgpu_bo_vm *bo); 312 int (*prepare)(struct amdgpu_vm_update_params *p, 313 struct amdgpu_sync *sync, u64 k_job_id); 314 int (*update)(struct amdgpu_vm_update_params *p, 315 struct amdgpu_bo_vm *bo, uint64_t pe, uint64_t addr, 316 unsigned count, uint32_t incr, uint64_t flags); 317 int (*commit)(struct amdgpu_vm_update_params *p, 318 struct dma_fence **fence); 319 }; 320 321 struct amdgpu_vm_fault_info { 322 /* fault address */ 323 uint64_t addr; 324 /* fault status register */ 325 uint32_t status; 326 /* which vmhub? gfxhub, mmhub, etc. */ 327 unsigned int vmhub; 328 }; 329 330 struct amdgpu_mem_stats { 331 struct drm_memory_stats drm; 332 333 /* buffers that requested this placement but are currently evicted */ 334 uint64_t evicted; 335 }; 336 337 struct amdgpu_vm { 338 /* tree of virtual addresses mapped */ 339 struct rb_root_cached va; 340 341 /* Lock to prevent eviction while we are updating page tables 342 * use vm_eviction_lock/unlock(vm) 343 */ 344 struct mutex eviction_lock; 345 bool evicting; 346 unsigned int saved_flags; 347 348 /* Lock to protect vm_bo add/del/move on all lists of vm */ 349 spinlock_t status_lock; 350 351 /* Memory statistics for this vm, protected by status_lock */ 352 struct amdgpu_mem_stats stats[__AMDGPU_PL_NUM]; 353 354 /* 355 * The following lists contain amdgpu_vm_bo_base objects for either 356 * PDs, PTs or per VM BOs. The state transits are: 357 * 358 * evicted -> relocated (PDs, PTs) or moved (per VM BOs) -> idle 359 */ 360 361 /* Per-VM and PT BOs who needs a validation */ 362 struct list_head evicted; 363 364 /* PT BOs which relocated and their parent need an update */ 365 struct list_head relocated; 366 367 /* per VM BOs moved, but not yet updated in the PT */ 368 struct list_head moved; 369 370 /* All BOs of this VM not currently in the state machine */ 371 struct list_head idle; 372 373 /* 374 * The following lists contain amdgpu_vm_bo_base objects for BOs which 375 * have their own dma_resv object and not depend on the root PD. Their 376 * state transits are: 377 * 378 * evicted_user or invalidated -> done 379 */ 380 381 /* BOs for user mode queues that need a validation */ 382 struct list_head evicted_user; 383 384 /* regular invalidated BOs, but not yet updated in the PT */ 385 struct list_head invalidated; 386 387 /* BOs which are invalidated, has been updated in the PTs */ 388 struct list_head done; 389 390 /* 391 * This list contains amdgpu_bo_va_mapping objects which have been freed 392 * but not updated in the PTs 393 */ 394 struct list_head freed; 395 396 /* contains the page directory */ 397 struct amdgpu_vm_bo_base root; 398 struct dma_fence *last_update; 399 400 /* Scheduler entities for page table updates */ 401 struct drm_sched_entity immediate; 402 struct drm_sched_entity delayed; 403 404 /* Last finished delayed update */ 405 atomic64_t tlb_seq; 406 struct dma_fence *last_tlb_flush; 407 atomic64_t kfd_last_flushed_seq; 408 uint64_t tlb_fence_context; 409 410 /* How many times we had to re-generate the page tables */ 411 uint64_t generation; 412 413 /* Last unlocked submission to the scheduler entities */ 414 struct dma_fence *last_unlocked; 415 416 unsigned int pasid; 417 struct amdgpu_vmid *reserved_vmid[AMDGPU_MAX_VMHUBS]; 418 419 /* Flag to indicate if VM tables are updated by CPU or GPU (SDMA) */ 420 bool use_cpu_for_update; 421 422 /* Functions to use for VM table updates */ 423 const struct amdgpu_vm_update_funcs *update_funcs; 424 425 /* Up to 128 pending retry page faults */ 426 DECLARE_KFIFO(faults, u64, 128); 427 428 /* Points to the KFD process VM info */ 429 struct amdkfd_process_info *process_info; 430 431 /* List node in amdkfd_process_info.vm_list_head */ 432 struct list_head vm_list_node; 433 434 /* Valid while the PD is reserved or fenced */ 435 uint64_t pd_phys_addr; 436 437 /* Some basic info about the task */ 438 struct amdgpu_task_info *task_info; 439 440 /* Store positions of group of BOs */ 441 struct ttm_lru_bulk_move lru_bulk_move; 442 /* Flag to indicate if VM is used for compute */ 443 bool is_compute_context; 444 445 /* Memory partition number, -1 means any partition */ 446 int8_t mem_id; 447 448 /* cached fault info */ 449 struct amdgpu_vm_fault_info fault_info; 450 }; 451 452 struct amdgpu_vm_manager { 453 /* Handling of VMIDs */ 454 struct amdgpu_vmid_mgr id_mgr[AMDGPU_MAX_VMHUBS]; 455 unsigned int first_kfd_vmid; 456 bool concurrent_flush; 457 458 uint64_t max_pfn; 459 uint32_t max_level; 460 uint32_t num_level; 461 uint32_t block_size; 462 uint32_t fragment_size; 463 enum amdgpu_vm_level root_level; 464 /* vram base address for page table entry */ 465 u64 vram_base_offset; 466 /* vm pte handling */ 467 const struct amdgpu_vm_pte_funcs *vm_pte_funcs; 468 struct drm_gpu_scheduler *vm_pte_scheds[AMDGPU_MAX_RINGS]; 469 unsigned vm_pte_num_scheds; 470 struct amdgpu_ring *page_fault; 471 472 /* partial resident texture handling */ 473 spinlock_t prt_lock; 474 atomic_t num_prt_users; 475 476 /* controls how VM page tables are updated for Graphics and Compute. 477 * BIT0[= 0] Graphics updated by SDMA [= 1] by CPU 478 * BIT1[= 0] Compute updated by SDMA [= 1] by CPU 479 */ 480 int vm_update_mode; 481 482 /* PASID to VM mapping, will be used in interrupt context to 483 * look up VM of a page fault 484 */ 485 struct xarray pasids; 486 /* Global registration of recent page fault information */ 487 struct amdgpu_vm_fault_info fault_info; 488 }; 489 490 struct amdgpu_bo_va_mapping; 491 492 #define amdgpu_vm_copy_pte(adev, ib, pe, src, count) ((adev)->vm_manager.vm_pte_funcs->copy_pte((ib), (pe), (src), (count))) 493 #define amdgpu_vm_write_pte(adev, ib, pe, value, count, incr) ((adev)->vm_manager.vm_pte_funcs->write_pte((ib), (pe), (value), (count), (incr))) 494 #define amdgpu_vm_set_pte_pde(adev, ib, pe, addr, count, incr, flags) ((adev)->vm_manager.vm_pte_funcs->set_pte_pde((ib), (pe), (addr), (count), (incr), (flags))) 495 496 extern const struct amdgpu_vm_update_funcs amdgpu_vm_cpu_funcs; 497 extern const struct amdgpu_vm_update_funcs amdgpu_vm_sdma_funcs; 498 499 void amdgpu_vm_manager_init(struct amdgpu_device *adev); 500 void amdgpu_vm_manager_fini(struct amdgpu_device *adev); 501 502 long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout); 503 int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, int32_t xcp_id, uint32_t pasid); 504 int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm); 505 void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm); 506 int amdgpu_vm_lock_pd(struct amdgpu_vm *vm, struct drm_exec *exec, 507 unsigned int num_fences); 508 int amdgpu_vm_lock_done_list(struct amdgpu_vm *vm, struct drm_exec *exec, 509 unsigned int num_fences); 510 bool amdgpu_vm_ready(struct amdgpu_vm *vm); 511 uint64_t amdgpu_vm_generation(struct amdgpu_device *adev, struct amdgpu_vm *vm); 512 int amdgpu_vm_validate(struct amdgpu_device *adev, struct amdgpu_vm *vm, 513 struct ww_acquire_ctx *ticket, 514 int (*callback)(void *p, struct amdgpu_bo *bo), 515 void *param); 516 int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync); 517 int amdgpu_vm_update_pdes(struct amdgpu_device *adev, 518 struct amdgpu_vm *vm, bool immediate); 519 int amdgpu_vm_clear_freed(struct amdgpu_device *adev, 520 struct amdgpu_vm *vm, 521 struct dma_fence **fence); 522 int amdgpu_vm_handle_moved(struct amdgpu_device *adev, 523 struct amdgpu_vm *vm, 524 struct ww_acquire_ctx *ticket); 525 int amdgpu_vm_flush_compute_tlb(struct amdgpu_device *adev, 526 struct amdgpu_vm *vm, 527 uint32_t flush_type, 528 uint32_t xcc_mask); 529 void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base, 530 struct amdgpu_vm *vm, struct amdgpu_bo *bo); 531 int amdgpu_vm_update_range(struct amdgpu_device *adev, struct amdgpu_vm *vm, 532 bool immediate, bool unlocked, bool flush_tlb, 533 bool allow_override, struct amdgpu_sync *sync, 534 uint64_t start, uint64_t last, uint64_t flags, 535 uint64_t offset, uint64_t vram_base, 536 struct ttm_resource *res, dma_addr_t *pages_addr, 537 struct dma_fence **fence); 538 int amdgpu_vm_bo_update(struct amdgpu_device *adev, 539 struct amdgpu_bo_va *bo_va, 540 bool clear); 541 bool amdgpu_vm_evictable(struct amdgpu_bo *bo); 542 void amdgpu_vm_bo_invalidate(struct amdgpu_bo *bo, bool evicted); 543 void amdgpu_vm_update_stats(struct amdgpu_vm_bo_base *base, 544 struct ttm_resource *new_res, int sign); 545 void amdgpu_vm_bo_update_shared(struct amdgpu_bo *bo); 546 void amdgpu_vm_bo_move(struct amdgpu_bo *bo, struct ttm_resource *new_mem, 547 bool evicted); 548 uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr); 549 struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm, 550 struct amdgpu_bo *bo); 551 struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev, 552 struct amdgpu_vm *vm, 553 struct amdgpu_bo *bo); 554 int amdgpu_vm_bo_map(struct amdgpu_device *adev, 555 struct amdgpu_bo_va *bo_va, 556 uint64_t addr, uint64_t offset, 557 uint64_t size, uint32_t flags); 558 int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev, 559 struct amdgpu_bo_va *bo_va, 560 uint64_t addr, uint64_t offset, 561 uint64_t size, uint32_t flags); 562 int amdgpu_vm_bo_unmap(struct amdgpu_device *adev, 563 struct amdgpu_bo_va *bo_va, 564 uint64_t addr); 565 int amdgpu_vm_bo_clear_mappings(struct amdgpu_device *adev, 566 struct amdgpu_vm *vm, 567 uint64_t saddr, uint64_t size); 568 struct amdgpu_bo_va_mapping *amdgpu_vm_bo_lookup_mapping(struct amdgpu_vm *vm, 569 uint64_t addr); 570 void amdgpu_vm_bo_trace_cs(struct amdgpu_vm *vm, struct ww_acquire_ctx *ticket); 571 void amdgpu_vm_bo_del(struct amdgpu_device *adev, 572 struct amdgpu_bo_va *bo_va); 573 void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size, 574 uint32_t fragment_size_default, unsigned max_level, 575 unsigned max_bits); 576 int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp); 577 bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, 578 struct amdgpu_job *job); 579 void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev); 580 581 struct amdgpu_task_info * 582 amdgpu_vm_get_task_info_pasid(struct amdgpu_device *adev, u32 pasid); 583 584 struct amdgpu_task_info * 585 amdgpu_vm_get_task_info_vm(struct amdgpu_vm *vm); 586 587 void amdgpu_vm_put_task_info(struct amdgpu_task_info *task_info); 588 589 bool amdgpu_vm_handle_fault(struct amdgpu_device *adev, u32 pasid, 590 u32 vmid, u32 node_id, uint64_t addr, uint64_t ts, 591 bool write_fault); 592 593 void amdgpu_vm_set_task_info(struct amdgpu_vm *vm); 594 595 void amdgpu_vm_move_to_lru_tail(struct amdgpu_device *adev, 596 struct amdgpu_vm *vm); 597 void amdgpu_vm_get_memory(struct amdgpu_vm *vm, 598 struct amdgpu_mem_stats stats[__AMDGPU_PL_NUM]); 599 600 int amdgpu_vm_pt_clear(struct amdgpu_device *adev, struct amdgpu_vm *vm, 601 struct amdgpu_bo_vm *vmbo, bool immediate); 602 int amdgpu_vm_pt_create(struct amdgpu_device *adev, struct amdgpu_vm *vm, 603 int level, bool immediate, struct amdgpu_bo_vm **vmbo, 604 int32_t xcp_id); 605 void amdgpu_vm_pt_free_root(struct amdgpu_device *adev, struct amdgpu_vm *vm); 606 607 int amdgpu_vm_pde_update(struct amdgpu_vm_update_params *params, 608 struct amdgpu_vm_bo_base *entry); 609 int amdgpu_vm_ptes_update(struct amdgpu_vm_update_params *params, 610 uint64_t start, uint64_t end, 611 uint64_t dst, uint64_t flags); 612 void amdgpu_vm_pt_free_work(struct work_struct *work); 613 void amdgpu_vm_pt_free_list(struct amdgpu_device *adev, 614 struct amdgpu_vm_update_params *params); 615 616 #if defined(CONFIG_DEBUG_FS) 617 void amdgpu_debugfs_vm_bo_info(struct amdgpu_vm *vm, struct seq_file *m); 618 #endif 619 620 int amdgpu_vm_pt_map_tables(struct amdgpu_device *adev, struct amdgpu_vm *vm); 621 622 bool amdgpu_vm_is_bo_always_valid(struct amdgpu_vm *vm, struct amdgpu_bo *bo); 623 624 /** 625 * amdgpu_vm_tlb_seq - return tlb flush sequence number 626 * @vm: the amdgpu_vm structure to query 627 * 628 * Returns the tlb flush sequence number which indicates that the VM TLBs needs 629 * to be invalidated whenever the sequence number change. 630 */ 631 static inline uint64_t amdgpu_vm_tlb_seq(struct amdgpu_vm *vm) 632 { 633 unsigned long flags; 634 spinlock_t *lock; 635 636 /* 637 * Workaround to stop racing between the fence signaling and handling 638 * the cb. The lock is static after initially setting it up, just make 639 * sure that the dma_fence structure isn't freed up. 640 */ 641 rcu_read_lock(); 642 lock = vm->last_tlb_flush->lock; 643 rcu_read_unlock(); 644 645 spin_lock_irqsave(lock, flags); 646 spin_unlock_irqrestore(lock, flags); 647 648 return atomic64_read(&vm->tlb_seq); 649 } 650 651 /* 652 * vm eviction_lock can be taken in MMU notifiers. Make sure no reclaim-FS 653 * happens while holding this lock anywhere to prevent deadlocks when 654 * an MMU notifier runs in reclaim-FS context. 655 */ 656 static inline void amdgpu_vm_eviction_lock(struct amdgpu_vm *vm) 657 { 658 mutex_lock(&vm->eviction_lock); 659 vm->saved_flags = memalloc_noreclaim_save(); 660 } 661 662 static inline bool amdgpu_vm_eviction_trylock(struct amdgpu_vm *vm) 663 { 664 if (mutex_trylock(&vm->eviction_lock)) { 665 vm->saved_flags = memalloc_noreclaim_save(); 666 return true; 667 } 668 return false; 669 } 670 671 static inline void amdgpu_vm_eviction_unlock(struct amdgpu_vm *vm) 672 { 673 memalloc_noreclaim_restore(vm->saved_flags); 674 mutex_unlock(&vm->eviction_lock); 675 } 676 677 void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev, 678 unsigned int pasid, 679 uint64_t addr, 680 uint32_t status, 681 unsigned int vmhub); 682 void amdgpu_vm_tlb_fence_create(struct amdgpu_device *adev, 683 struct amdgpu_vm *vm, 684 struct dma_fence **fence); 685 686 void amdgpu_vm_print_task_info(struct amdgpu_device *adev, 687 struct amdgpu_task_info *task_info); 688 689 #define amdgpu_vm_bo_va_for_each_valid_mapping(bo_va, mapping) \ 690 list_for_each_entry(mapping, &(bo_va)->valids, list) 691 #define amdgpu_vm_bo_va_for_each_invalid_mapping(bo_va, mapping) \ 692 list_for_each_entry(mapping, &(bo_va)->invalids, list) 693 694 #endif 695