2 * Copyright 2016 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Christian König
24 #ifndef __AMDGPU_VM_H__
25 #define __AMDGPU_VM_H__
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>
35 #include "amdgpu_sync.h"
36 #include "amdgpu_ring.h"
37 #include "amdgpu_ids.h"
43 struct amdgpu_bo_list_entry;
45 struct amdgpu_mem_stats;
51 /* Maximum number of PTEs the hardware can write with one command */
52 #define AMDGPU_VM_MAX_UPDATE_SIZE 0x3FFFF
54 /* number of entries in page table */
55 #define AMDGPU_VM_PTE_COUNT(adev) (1 << (adev)->vm_manager.block_size)
57 #define AMDGPU_PTE_VALID (1ULL << 0)
58 #define AMDGPU_PTE_SYSTEM (1ULL << 1)
59 #define AMDGPU_PTE_SNOOPED (1ULL << 2)
62 #define AMDGPU_PTE_TMZ (1ULL << 3)
65 #define AMDGPU_PTE_EXECUTABLE (1ULL << 4)
67 #define AMDGPU_PTE_READABLE (1ULL << 5)
68 #define AMDGPU_PTE_WRITEABLE (1ULL << 6)
70 #define AMDGPU_PTE_FRAG(x) ((x & 0x1fULL) << 7)
72 /* TILED for VEGA10, reserved for older ASICs */
73 #define AMDGPU_PTE_PRT (1ULL << 51)
75 /* PDE is handled as PTE for VEGA10 */
76 #define AMDGPU_PDE_PTE (1ULL << 54)
78 #define AMDGPU_PTE_LOG (1ULL << 55)
80 /* PTE is handled as PDE for VEGA10 (Translate Further) */
81 #define AMDGPU_PTE_TF (1ULL << 56)
83 /* MALL noalloc for sienna_cichlid, reserved for older ASICs */
84 #define AMDGPU_PTE_NOALLOC (1ULL << 58)
86 /* PDE Block Fragment Size for VEGA10 */
87 #define AMDGPU_PDE_BFS(a) ((uint64_t)a << 59)
89 /* Flag combination to set no-retry with TF disabled */
90 #define AMDGPU_VM_NORETRY_FLAGS (AMDGPU_PTE_EXECUTABLE | AMDGPU_PDE_PTE | \
93 /* Flag combination to set no-retry with TF enabled */
94 #define AMDGPU_VM_NORETRY_FLAGS_TF (AMDGPU_PTE_VALID | AMDGPU_PTE_SYSTEM | \
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))
103 #define AMDGPU_MTYPE_NC 0
104 #define AMDGPU_MTYPE_CC 2
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))
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))
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)
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))
131 #define AMDGPU_PTE_IS_PTE (1ULL << 63)
133 /* PDE Block Fragment Size for gfx v12 */
134 #define AMDGPU_PDE_BFS_GFX12(a) ((uint64_t)((a) & 0x1fULL) << 58)
135 #define AMDGPU_PDE_BFS_FLAG(adev, a) \
136 ((amdgpu_ip_version((adev), GC_HWIP, 0) >= IP_VERSION(12, 0, 0)) ? AMDGPU_PDE_BFS_GFX12(a) : AMDGPU_PDE_BFS(a))
137 /* PDE is handled as PTE for gfx v12 */
138 #define AMDGPU_PDE_PTE_GFX12 (1ULL << 63)
139 #define AMDGPU_PDE_PTE_FLAG(adev) \
140 ((amdgpu_ip_version((adev), GC_HWIP, 0) >= IP_VERSION(12, 0, 0)) ? AMDGPU_PDE_PTE_GFX12 : AMDGPU_PDE_PTE)
142 /* How to program VM fault handling */
143 #define AMDGPU_VM_FAULT_STOP_NEVER 0
144 #define AMDGPU_VM_FAULT_STOP_FIRST 1
145 #define AMDGPU_VM_FAULT_STOP_ALWAYS 2
147 /* How much VRAM be reserved for page tables */
148 #define AMDGPU_VM_RESERVED_VRAM (8ULL << 20)
151 * max number of VMHUB
152 * layout: max 8 GFXHUB + 4 MMHUB0 + 1 MMHUB1
154 #define AMDGPU_MAX_VMHUBS 13
155 #define AMDGPU_GFXHUB_START 0
156 #define AMDGPU_MMHUB0_START 8
157 #define AMDGPU_MMHUB1_START 12
158 #define AMDGPU_GFXHUB(x) (AMDGPU_GFXHUB_START + (x))
159 #define AMDGPU_MMHUB0(x) (AMDGPU_MMHUB0_START + (x))
160 #define AMDGPU_MMHUB1(x) (AMDGPU_MMHUB1_START + (x))
162 #define AMDGPU_IS_GFXHUB(x) ((x) >= AMDGPU_GFXHUB_START && (x) < AMDGPU_MMHUB0_START)
163 #define AMDGPU_IS_MMHUB0(x) ((x) >= AMDGPU_MMHUB0_START && (x) < AMDGPU_MMHUB1_START)
164 #define AMDGPU_IS_MMHUB1(x) ((x) >= AMDGPU_MMHUB1_START && (x) < AMDGPU_MAX_VMHUBS)
166 /* Reserve space at top/bottom of address space for kernel use */
167 #define AMDGPU_VA_RESERVED_CSA_SIZE (2ULL << 20)
168 #define AMDGPU_VA_RESERVED_CSA_START(adev) (((adev)->vm_manager.max_pfn \
169 << AMDGPU_GPU_PAGE_SHIFT) \
170 - AMDGPU_VA_RESERVED_CSA_SIZE)
171 #define AMDGPU_VA_RESERVED_SEQ64_SIZE (2ULL << 20)
172 #define AMDGPU_VA_RESERVED_SEQ64_START(adev) (AMDGPU_VA_RESERVED_CSA_START(adev) \
173 - AMDGPU_VA_RESERVED_SEQ64_SIZE)
174 #define AMDGPU_VA_RESERVED_TRAP_SIZE (2ULL << 12)
175 #define AMDGPU_VA_RESERVED_TRAP_START(adev) (AMDGPU_VA_RESERVED_SEQ64_START(adev) \
176 - AMDGPU_VA_RESERVED_TRAP_SIZE)
177 #define AMDGPU_VA_RESERVED_BOTTOM (1ULL << 16)
178 #define AMDGPU_VA_RESERVED_TOP (AMDGPU_VA_RESERVED_TRAP_SIZE + \
179 AMDGPU_VA_RESERVED_SEQ64_SIZE + \
180 AMDGPU_VA_RESERVED_CSA_SIZE)
182 /* See vm_update_mode */
183 #define AMDGPU_VM_USE_CPU_FOR_GFX (1 << 0)
184 #define AMDGPU_VM_USE_CPU_FOR_COMPUTE (1 << 1)
186 /* VMPT level enumerate, and the hiberachy is:
187 * PDB2->PDB1->PDB0->PTB
189 enum amdgpu_vm_level {
196 /* base structure for tracking BO usage in a VM */
197 struct amdgpu_vm_bo_base {
198 /* constant after initialization */
199 struct amdgpu_vm *vm;
200 struct amdgpu_bo *bo;
202 /* protected by bo being reserved */
203 struct amdgpu_vm_bo_base *next;
205 /* protected by spinlock */
206 struct list_head vm_status;
208 /* protected by the BO being reserved */
212 /* provided by hw blocks that can write ptes, e.g., sdma */
213 struct amdgpu_vm_pte_funcs {
214 /* number of dw to reserve per operation */
215 unsigned copy_pte_num_dw;
217 /* copy pte entries from GART */
218 void (*copy_pte)(struct amdgpu_ib *ib,
219 uint64_t pe, uint64_t src,
222 /* write pte one entry at a time with addr mapping */
223 void (*write_pte)(struct amdgpu_ib *ib, uint64_t pe,
224 uint64_t value, unsigned count,
226 /* for linear pte/pde updates without addr mapping */
227 void (*set_pte_pde)(struct amdgpu_ib *ib,
229 uint64_t addr, unsigned count,
230 uint32_t incr, uint64_t flags);
233 struct amdgpu_task_info {
234 char process_name[TASK_COMM_LEN];
235 char task_name[TASK_COMM_LEN];
238 struct kref refcount;
242 * struct amdgpu_vm_update_params
244 * Encapsulate some VM table update parameters to reduce
245 * the number of function parameters
248 struct amdgpu_vm_update_params {
251 * @adev: amdgpu device we do this update for
253 struct amdgpu_device *adev;
256 * @vm: optional amdgpu_vm we do this update for
258 struct amdgpu_vm *vm;
261 * @immediate: if changes should be made immediately
266 * @unlocked: true if the root BO is not locked
273 * DMA addresses to use for mapping
275 dma_addr_t *pages_addr;
278 * @job: job to used for hw submission
280 struct amdgpu_job *job;
283 * @num_dw_left: number of dw left for the IB
285 unsigned int num_dw_left;
288 * @needs_flush: true whenever we need to invalidate the TLB
293 * @allow_override: true for memory that is not uncached: allows MTYPE
294 * to be overridden for NUMA local memory.
299 * @tlb_flush_waitlist: temporary storage for BOs until tlb_flush
301 struct list_head tlb_flush_waitlist;
304 struct amdgpu_vm_update_funcs {
305 int (*map_table)(struct amdgpu_bo_vm *bo);
306 int (*prepare)(struct amdgpu_vm_update_params *p, struct dma_resv *resv,
307 enum amdgpu_sync_mode sync_mode);
308 int (*update)(struct amdgpu_vm_update_params *p,
309 struct amdgpu_bo_vm *bo, uint64_t pe, uint64_t addr,
310 unsigned count, uint32_t incr, uint64_t flags);
311 int (*commit)(struct amdgpu_vm_update_params *p,
312 struct dma_fence **fence);
315 struct amdgpu_vm_fault_info {
318 /* fault status register */
320 /* which vmhub? gfxhub, mmhub, etc. */
325 /* tree of virtual addresses mapped */
326 struct rb_root_cached va;
328 /* Lock to prevent eviction while we are updating page tables
329 * use vm_eviction_lock/unlock(vm)
331 struct mutex eviction_lock;
333 unsigned int saved_flags;
335 /* Lock to protect vm_bo add/del/move on all lists of vm */
336 spinlock_t status_lock;
338 /* Per-VM and PT BOs who needs a validation */
339 struct list_head evicted;
341 /* BOs for user mode queues that need a validation */
342 struct list_head evicted_user;
344 /* PT BOs which relocated and their parent need an update */
345 struct list_head relocated;
347 /* per VM BOs moved, but not yet updated in the PT */
348 struct list_head moved;
350 /* All BOs of this VM not currently in the state machine */
351 struct list_head idle;
353 /* regular invalidated BOs, but not yet updated in the PT */
354 struct list_head invalidated;
356 /* BO mappings freed, but not yet updated in the PT */
357 struct list_head freed;
359 /* BOs which are invalidated, has been updated in the PTs */
360 struct list_head done;
362 /* PT BOs scheduled to free and fill with zero if vm_resv is not hold */
363 struct list_head pt_freed;
364 struct work_struct pt_free_work;
366 /* contains the page directory */
367 struct amdgpu_vm_bo_base root;
368 struct dma_fence *last_update;
370 /* Scheduler entities for page table updates */
371 struct drm_sched_entity immediate;
372 struct drm_sched_entity delayed;
374 /* Last finished delayed update */
376 struct dma_fence *last_tlb_flush;
377 atomic64_t kfd_last_flushed_seq;
378 uint64_t tlb_fence_context;
380 /* How many times we had to re-generate the page tables */
383 /* Last unlocked submission to the scheduler entities */
384 struct dma_fence *last_unlocked;
387 bool reserved_vmid[AMDGPU_MAX_VMHUBS];
389 /* Flag to indicate if VM tables are updated by CPU or GPU (SDMA) */
390 bool use_cpu_for_update;
392 /* Functions to use for VM table updates */
393 const struct amdgpu_vm_update_funcs *update_funcs;
395 /* Up to 128 pending retry page faults */
396 DECLARE_KFIFO(faults, u64, 128);
398 /* Points to the KFD process VM info */
399 struct amdkfd_process_info *process_info;
401 /* List node in amdkfd_process_info.vm_list_head */
402 struct list_head vm_list_node;
404 /* Valid while the PD is reserved or fenced */
405 uint64_t pd_phys_addr;
407 /* Some basic info about the task */
408 struct amdgpu_task_info *task_info;
410 /* Store positions of group of BOs */
411 struct ttm_lru_bulk_move lru_bulk_move;
412 /* Flag to indicate if VM is used for compute */
413 bool is_compute_context;
415 /* Memory partition number, -1 means any partition */
418 /* cached fault info */
419 struct amdgpu_vm_fault_info fault_info;
422 struct amdgpu_vm_manager {
423 /* Handling of VMIDs */
424 struct amdgpu_vmid_mgr id_mgr[AMDGPU_MAX_VMHUBS];
425 unsigned int first_kfd_vmid;
426 bool concurrent_flush;
428 /* Handling of VM fences */
430 unsigned seqno[AMDGPU_MAX_RINGS];
435 uint32_t fragment_size;
436 enum amdgpu_vm_level root_level;
437 /* vram base address for page table entry */
438 u64 vram_base_offset;
439 /* vm pte handling */
440 const struct amdgpu_vm_pte_funcs *vm_pte_funcs;
441 struct drm_gpu_scheduler *vm_pte_scheds[AMDGPU_MAX_RINGS];
442 unsigned vm_pte_num_scheds;
443 struct amdgpu_ring *page_fault;
445 /* partial resident texture handling */
447 atomic_t num_prt_users;
449 /* controls how VM page tables are updated for Graphics and Compute.
450 * BIT0[= 0] Graphics updated by SDMA [= 1] by CPU
451 * BIT1[= 0] Compute updated by SDMA [= 1] by CPU
455 /* PASID to VM mapping, will be used in interrupt context to
456 * look up VM of a page fault
458 struct xarray pasids;
459 /* Global registration of recent page fault information */
460 struct amdgpu_vm_fault_info fault_info;
463 struct amdgpu_bo_va_mapping;
465 #define amdgpu_vm_copy_pte(adev, ib, pe, src, count) ((adev)->vm_manager.vm_pte_funcs->copy_pte((ib), (pe), (src), (count)))
466 #define amdgpu_vm_write_pte(adev, ib, pe, value, count, incr) ((adev)->vm_manager.vm_pte_funcs->write_pte((ib), (pe), (value), (count), (incr)))
467 #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)))
469 extern const struct amdgpu_vm_update_funcs amdgpu_vm_cpu_funcs;
470 extern const struct amdgpu_vm_update_funcs amdgpu_vm_sdma_funcs;
472 void amdgpu_vm_manager_init(struct amdgpu_device *adev);
473 void amdgpu_vm_manager_fini(struct amdgpu_device *adev);
475 int amdgpu_vm_set_pasid(struct amdgpu_device *adev, struct amdgpu_vm *vm,
478 long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout);
479 int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, int32_t xcp_id);
480 int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm);
481 void amdgpu_vm_release_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm);
482 void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm);
483 int amdgpu_vm_lock_pd(struct amdgpu_vm *vm, struct drm_exec *exec,
484 unsigned int num_fences);
485 bool amdgpu_vm_ready(struct amdgpu_vm *vm);
486 uint64_t amdgpu_vm_generation(struct amdgpu_device *adev, struct amdgpu_vm *vm);
487 int amdgpu_vm_validate(struct amdgpu_device *adev, struct amdgpu_vm *vm,
488 struct ww_acquire_ctx *ticket,
489 int (*callback)(void *p, struct amdgpu_bo *bo),
491 int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_pipe_sync);
492 int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
493 struct amdgpu_vm *vm, bool immediate);
494 int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
495 struct amdgpu_vm *vm,
496 struct dma_fence **fence);
497 int amdgpu_vm_handle_moved(struct amdgpu_device *adev,
498 struct amdgpu_vm *vm,
499 struct ww_acquire_ctx *ticket);
500 int amdgpu_vm_flush_compute_tlb(struct amdgpu_device *adev,
501 struct amdgpu_vm *vm,
504 void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base,
505 struct amdgpu_vm *vm, struct amdgpu_bo *bo);
506 int amdgpu_vm_update_range(struct amdgpu_device *adev, struct amdgpu_vm *vm,
507 bool immediate, bool unlocked, bool flush_tlb, bool allow_override,
508 struct dma_resv *resv, uint64_t start, uint64_t last,
509 uint64_t flags, uint64_t offset, uint64_t vram_base,
510 struct ttm_resource *res, dma_addr_t *pages_addr,
511 struct dma_fence **fence);
512 int amdgpu_vm_bo_update(struct amdgpu_device *adev,
513 struct amdgpu_bo_va *bo_va,
515 bool amdgpu_vm_evictable(struct amdgpu_bo *bo);
516 void amdgpu_vm_bo_invalidate(struct amdgpu_device *adev,
517 struct amdgpu_bo *bo, bool evicted);
518 uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr);
519 struct amdgpu_bo_va *amdgpu_vm_bo_find(struct amdgpu_vm *vm,
520 struct amdgpu_bo *bo);
521 struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
522 struct amdgpu_vm *vm,
523 struct amdgpu_bo *bo);
524 int amdgpu_vm_bo_map(struct amdgpu_device *adev,
525 struct amdgpu_bo_va *bo_va,
526 uint64_t addr, uint64_t offset,
527 uint64_t size, uint64_t flags);
528 int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev,
529 struct amdgpu_bo_va *bo_va,
530 uint64_t addr, uint64_t offset,
531 uint64_t size, uint64_t flags);
532 int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
533 struct amdgpu_bo_va *bo_va,
535 int amdgpu_vm_bo_clear_mappings(struct amdgpu_device *adev,
536 struct amdgpu_vm *vm,
537 uint64_t saddr, uint64_t size);
538 struct amdgpu_bo_va_mapping *amdgpu_vm_bo_lookup_mapping(struct amdgpu_vm *vm,
540 void amdgpu_vm_bo_trace_cs(struct amdgpu_vm *vm, struct ww_acquire_ctx *ticket);
541 void amdgpu_vm_bo_del(struct amdgpu_device *adev,
542 struct amdgpu_bo_va *bo_va);
543 void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size,
544 uint32_t fragment_size_default, unsigned max_level,
546 int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
547 bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring,
548 struct amdgpu_job *job);
549 void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev);
551 struct amdgpu_task_info *
552 amdgpu_vm_get_task_info_pasid(struct amdgpu_device *adev, u32 pasid);
554 struct amdgpu_task_info *
555 amdgpu_vm_get_task_info_vm(struct amdgpu_vm *vm);
557 void amdgpu_vm_put_task_info(struct amdgpu_task_info *task_info);
559 bool amdgpu_vm_handle_fault(struct amdgpu_device *adev, u32 pasid,
560 u32 vmid, u32 node_id, uint64_t addr,
563 void amdgpu_vm_set_task_info(struct amdgpu_vm *vm);
565 void amdgpu_vm_move_to_lru_tail(struct amdgpu_device *adev,
566 struct amdgpu_vm *vm);
567 void amdgpu_vm_get_memory(struct amdgpu_vm *vm,
568 struct amdgpu_mem_stats *stats);
570 int amdgpu_vm_pt_clear(struct amdgpu_device *adev, struct amdgpu_vm *vm,
571 struct amdgpu_bo_vm *vmbo, bool immediate);
572 int amdgpu_vm_pt_create(struct amdgpu_device *adev, struct amdgpu_vm *vm,
573 int level, bool immediate, struct amdgpu_bo_vm **vmbo,
575 void amdgpu_vm_pt_free_root(struct amdgpu_device *adev, struct amdgpu_vm *vm);
577 int amdgpu_vm_pde_update(struct amdgpu_vm_update_params *params,
578 struct amdgpu_vm_bo_base *entry);
579 int amdgpu_vm_ptes_update(struct amdgpu_vm_update_params *params,
580 uint64_t start, uint64_t end,
581 uint64_t dst, uint64_t flags);
582 void amdgpu_vm_pt_free_work(struct work_struct *work);
583 void amdgpu_vm_pt_free_list(struct amdgpu_device *adev,
584 struct amdgpu_vm_update_params *params);
586 #if defined(CONFIG_DEBUG_FS)
587 void amdgpu_debugfs_vm_bo_info(struct amdgpu_vm *vm, struct seq_file *m);
590 int amdgpu_vm_pt_map_tables(struct amdgpu_device *adev, struct amdgpu_vm *vm);
592 bool amdgpu_vm_is_bo_always_valid(struct amdgpu_vm *vm, struct amdgpu_bo *bo);
595 * amdgpu_vm_tlb_seq - return tlb flush sequence number
596 * @vm: the amdgpu_vm structure to query
598 * Returns the tlb flush sequence number which indicates that the VM TLBs needs
599 * to be invalidated whenever the sequence number change.
601 static inline uint64_t amdgpu_vm_tlb_seq(struct amdgpu_vm *vm)
607 * Workaround to stop racing between the fence signaling and handling
608 * the cb. The lock is static after initially setting it up, just make
609 * sure that the dma_fence structure isn't freed up.
612 lock = vm->last_tlb_flush->lock;
615 spin_lock_irqsave(lock, flags);
616 spin_unlock_irqrestore(lock, flags);
618 return atomic64_read(&vm->tlb_seq);
622 * vm eviction_lock can be taken in MMU notifiers. Make sure no reclaim-FS
623 * happens while holding this lock anywhere to prevent deadlocks when
624 * an MMU notifier runs in reclaim-FS context.
626 static inline void amdgpu_vm_eviction_lock(struct amdgpu_vm *vm)
628 mutex_lock(&vm->eviction_lock);
629 vm->saved_flags = memalloc_noreclaim_save();
632 static inline bool amdgpu_vm_eviction_trylock(struct amdgpu_vm *vm)
634 if (mutex_trylock(&vm->eviction_lock)) {
635 vm->saved_flags = memalloc_noreclaim_save();
641 static inline void amdgpu_vm_eviction_unlock(struct amdgpu_vm *vm)
643 memalloc_noreclaim_restore(vm->saved_flags);
644 mutex_unlock(&vm->eviction_lock);
647 void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev,
652 void amdgpu_vm_tlb_fence_create(struct amdgpu_device *adev,
653 struct amdgpu_vm *vm,
654 struct dma_fence **fence);