1 /* 2 * Copyright 2014 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 23 /* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */ 24 25 #ifndef AMDGPU_AMDKFD_H_INCLUDED 26 #define AMDGPU_AMDKFD_H_INCLUDED 27 28 #include <linux/types.h> 29 #include <linux/mm.h> 30 #include <linux/kthread.h> 31 #include <linux/workqueue.h> 32 #include <linux/mmu_notifier.h> 33 #include <linux/memremap.h> 34 #include <kgd_kfd_interface.h> 35 #include <drm/ttm/ttm_execbuf_util.h> 36 #include "amdgpu_sync.h" 37 #include "amdgpu_vm.h" 38 #include "amdgpu_xcp.h" 39 40 extern uint64_t amdgpu_amdkfd_total_mem_size; 41 42 enum TLB_FLUSH_TYPE { 43 TLB_FLUSH_LEGACY = 0, 44 TLB_FLUSH_LIGHTWEIGHT, 45 TLB_FLUSH_HEAVYWEIGHT 46 }; 47 48 struct amdgpu_device; 49 50 enum kfd_mem_attachment_type { 51 KFD_MEM_ATT_SHARED, /* Share kgd_mem->bo or another attachment's */ 52 KFD_MEM_ATT_USERPTR, /* SG bo to DMA map pages from a userptr bo */ 53 KFD_MEM_ATT_DMABUF, /* DMAbuf to DMA map TTM BOs */ 54 KFD_MEM_ATT_SG /* Tag to DMA map SG BOs */ 55 }; 56 57 struct kfd_mem_attachment { 58 struct list_head list; 59 enum kfd_mem_attachment_type type; 60 bool is_mapped; 61 struct amdgpu_bo_va *bo_va; 62 struct amdgpu_device *adev; 63 uint64_t va; 64 uint64_t pte_flags; 65 }; 66 67 struct kgd_mem { 68 struct mutex lock; 69 struct amdgpu_bo *bo; 70 struct dma_buf *dmabuf; 71 struct hmm_range *range; 72 struct list_head attachments; 73 /* protected by amdkfd_process_info.lock */ 74 struct ttm_validate_buffer validate_list; 75 struct ttm_validate_buffer resv_list; 76 uint32_t domain; 77 unsigned int mapped_to_gpu_memory; 78 uint64_t va; 79 80 uint32_t alloc_flags; 81 82 uint32_t invalid; 83 struct amdkfd_process_info *process_info; 84 85 struct amdgpu_sync sync; 86 87 bool aql_queue; 88 bool is_imported; 89 }; 90 91 /* KFD Memory Eviction */ 92 struct amdgpu_amdkfd_fence { 93 struct dma_fence base; 94 struct mm_struct *mm; 95 spinlock_t lock; 96 char timeline_name[TASK_COMM_LEN]; 97 struct svm_range_bo *svm_bo; 98 }; 99 100 struct amdgpu_kfd_dev { 101 struct kfd_dev *dev; 102 int64_t vram_used[MAX_XCP]; 103 uint64_t vram_used_aligned[MAX_XCP]; 104 bool init_complete; 105 struct work_struct reset_work; 106 107 /* HMM page migration MEMORY_DEVICE_PRIVATE mapping */ 108 struct dev_pagemap pgmap; 109 }; 110 111 enum kgd_engine_type { 112 KGD_ENGINE_PFP = 1, 113 KGD_ENGINE_ME, 114 KGD_ENGINE_CE, 115 KGD_ENGINE_MEC1, 116 KGD_ENGINE_MEC2, 117 KGD_ENGINE_RLC, 118 KGD_ENGINE_SDMA1, 119 KGD_ENGINE_SDMA2, 120 KGD_ENGINE_MAX 121 }; 122 123 124 struct amdkfd_process_info { 125 /* List head of all VMs that belong to a KFD process */ 126 struct list_head vm_list_head; 127 /* List head for all KFD BOs that belong to a KFD process. */ 128 struct list_head kfd_bo_list; 129 /* List of userptr BOs that are valid or invalid */ 130 struct list_head userptr_valid_list; 131 struct list_head userptr_inval_list; 132 /* Lock to protect kfd_bo_list */ 133 struct mutex lock; 134 135 /* Number of VMs */ 136 unsigned int n_vms; 137 /* Eviction Fence */ 138 struct amdgpu_amdkfd_fence *eviction_fence; 139 140 /* MMU-notifier related fields */ 141 struct mutex notifier_lock; 142 uint32_t evicted_bos; 143 struct delayed_work restore_userptr_work; 144 struct pid *pid; 145 bool block_mmu_notifications; 146 }; 147 148 int amdgpu_amdkfd_init(void); 149 void amdgpu_amdkfd_fini(void); 150 151 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm); 152 int amdgpu_amdkfd_resume_iommu(struct amdgpu_device *adev); 153 int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm); 154 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev, 155 const void *ih_ring_entry); 156 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev); 157 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev); 158 void amdgpu_amdkfd_device_fini_sw(struct amdgpu_device *adev); 159 int amdgpu_amdkfd_check_and_lock_kfd(struct amdgpu_device *adev); 160 void amdgpu_amdkfd_unlock_kfd(struct amdgpu_device *adev); 161 int amdgpu_amdkfd_submit_ib(struct amdgpu_device *adev, 162 enum kgd_engine_type engine, 163 uint32_t vmid, uint64_t gpu_addr, 164 uint32_t *ib_cmd, uint32_t ib_len); 165 void amdgpu_amdkfd_set_compute_idle(struct amdgpu_device *adev, bool idle); 166 bool amdgpu_amdkfd_have_atomics_support(struct amdgpu_device *adev); 167 int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct amdgpu_device *adev, 168 uint16_t vmid); 169 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct amdgpu_device *adev, 170 uint16_t pasid, enum TLB_FLUSH_TYPE flush_type, 171 uint32_t inst); 172 173 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid); 174 175 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev); 176 177 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev); 178 179 void amdgpu_amdkfd_gpu_reset(struct amdgpu_device *adev); 180 181 int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev, 182 int queue_bit); 183 184 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context, 185 struct mm_struct *mm, 186 struct svm_range_bo *svm_bo); 187 #if defined(CONFIG_DEBUG_FS) 188 int kfd_debugfs_kfd_mem_limits(struct seq_file *m, void *data); 189 #endif 190 #if IS_ENABLED(CONFIG_HSA_AMD) 191 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm); 192 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f); 193 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo); 194 int amdgpu_amdkfd_evict_userptr(struct mmu_interval_notifier *mni, 195 unsigned long cur_seq, struct kgd_mem *mem); 196 #else 197 static inline 198 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm) 199 { 200 return false; 201 } 202 203 static inline 204 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f) 205 { 206 return NULL; 207 } 208 209 static inline 210 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo) 211 { 212 return 0; 213 } 214 215 static inline 216 int amdgpu_amdkfd_evict_userptr(struct mmu_interval_notifier *mni, 217 unsigned long cur_seq, struct kgd_mem *mem) 218 { 219 return 0; 220 } 221 #endif 222 /* Shared API */ 223 int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size, 224 void **mem_obj, uint64_t *gpu_addr, 225 void **cpu_ptr, bool mqd_gfx9); 226 void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void *mem_obj); 227 int amdgpu_amdkfd_alloc_gws(struct amdgpu_device *adev, size_t size, 228 void **mem_obj); 229 void amdgpu_amdkfd_free_gws(struct amdgpu_device *adev, void *mem_obj); 230 int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem); 231 int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem); 232 uint32_t amdgpu_amdkfd_get_fw_version(struct amdgpu_device *adev, 233 enum kgd_engine_type type); 234 void amdgpu_amdkfd_get_local_mem_info(struct amdgpu_device *adev, 235 struct kfd_local_mem_info *mem_info, 236 struct amdgpu_xcp *xcp); 237 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct amdgpu_device *adev); 238 239 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct amdgpu_device *adev); 240 void amdgpu_amdkfd_get_cu_info(struct amdgpu_device *adev, 241 struct kfd_cu_info *cu_info); 242 int amdgpu_amdkfd_get_dmabuf_info(struct amdgpu_device *adev, int dma_buf_fd, 243 struct amdgpu_device **dmabuf_adev, 244 uint64_t *bo_size, void *metadata_buffer, 245 size_t buffer_size, uint32_t *metadata_size, 246 uint32_t *flags, int8_t *xcp_id); 247 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct amdgpu_device *dst, 248 struct amdgpu_device *src); 249 int amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(struct amdgpu_device *dst, 250 struct amdgpu_device *src, 251 bool is_min); 252 int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct amdgpu_device *adev, bool is_min); 253 int amdgpu_amdkfd_send_close_event_drain_irq(struct amdgpu_device *adev, 254 uint32_t *payload); 255 int amdgpu_amdkfd_unmap_hiq(struct amdgpu_device *adev, u32 doorbell_off, 256 u32 inst); 257 258 /* Read user wptr from a specified user address space with page fault 259 * disabled. The memory must be pinned and mapped to the hardware when 260 * this is called in hqd_load functions, so it should never fault in 261 * the first place. This resolves a circular lock dependency involving 262 * four locks, including the DQM lock and mmap_lock. 263 */ 264 #define read_user_wptr(mmptr, wptr, dst) \ 265 ({ \ 266 bool valid = false; \ 267 if ((mmptr) && (wptr)) { \ 268 pagefault_disable(); \ 269 if ((mmptr) == current->mm) { \ 270 valid = !get_user((dst), (wptr)); \ 271 } else if (current->flags & PF_KTHREAD) { \ 272 kthread_use_mm(mmptr); \ 273 valid = !get_user((dst), (wptr)); \ 274 kthread_unuse_mm(mmptr); \ 275 } \ 276 pagefault_enable(); \ 277 } \ 278 valid; \ 279 }) 280 281 /* GPUVM API */ 282 #define drm_priv_to_vm(drm_priv) \ 283 (&((struct amdgpu_fpriv *) \ 284 ((struct drm_file *)(drm_priv))->driver_priv)->vm) 285 286 int amdgpu_amdkfd_gpuvm_set_vm_pasid(struct amdgpu_device *adev, 287 struct amdgpu_vm *avm, u32 pasid); 288 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct amdgpu_device *adev, 289 struct amdgpu_vm *avm, 290 void **process_info, 291 struct dma_fence **ef); 292 void amdgpu_amdkfd_gpuvm_release_process_vm(struct amdgpu_device *adev, 293 void *drm_priv); 294 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv); 295 size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev, 296 uint8_t xcp_id); 297 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( 298 struct amdgpu_device *adev, uint64_t va, uint64_t size, 299 void *drm_priv, struct kgd_mem **mem, 300 uint64_t *offset, uint32_t flags, bool criu_resume); 301 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( 302 struct amdgpu_device *adev, struct kgd_mem *mem, void *drm_priv, 303 uint64_t *size); 304 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(struct amdgpu_device *adev, 305 struct kgd_mem *mem, void *drm_priv); 306 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( 307 struct amdgpu_device *adev, struct kgd_mem *mem, void *drm_priv); 308 int amdgpu_amdkfd_gpuvm_sync_memory( 309 struct amdgpu_device *adev, struct kgd_mem *mem, bool intr); 310 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_mem *mem, 311 void **kptr, uint64_t *size); 312 void amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel(struct kgd_mem *mem); 313 314 int amdgpu_amdkfd_map_gtt_bo_to_gart(struct amdgpu_device *adev, struct amdgpu_bo *bo); 315 316 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info, 317 struct dma_fence **ef); 318 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct amdgpu_device *adev, 319 struct kfd_vm_fault_info *info); 320 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct amdgpu_device *adev, 321 struct dma_buf *dmabuf, 322 uint64_t va, void *drm_priv, 323 struct kgd_mem **mem, uint64_t *size, 324 uint64_t *mmap_offset); 325 int amdgpu_amdkfd_gpuvm_export_dmabuf(struct kgd_mem *mem, 326 struct dma_buf **dmabuf); 327 void amdgpu_amdkfd_debug_mem_fence(struct amdgpu_device *adev); 328 int amdgpu_amdkfd_get_tile_config(struct amdgpu_device *adev, 329 struct tile_config *config); 330 void amdgpu_amdkfd_ras_poison_consumption_handler(struct amdgpu_device *adev, 331 bool reset); 332 bool amdgpu_amdkfd_bo_mapped_to_dev(struct amdgpu_device *adev, struct kgd_mem *mem); 333 void amdgpu_amdkfd_block_mmu_notifications(void *p); 334 int amdgpu_amdkfd_criu_resume(void *p); 335 bool amdgpu_amdkfd_ras_query_utcl2_poison_status(struct amdgpu_device *adev); 336 int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev, 337 uint64_t size, u32 alloc_flag, int8_t xcp_id); 338 void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev, 339 uint64_t size, u32 alloc_flag, int8_t xcp_id); 340 341 u64 amdgpu_amdkfd_xcp_memory_size(struct amdgpu_device *adev, int xcp_id); 342 343 #define KFD_XCP_MEM_ID(adev, xcp_id) \ 344 ((adev)->xcp_mgr && (xcp_id) >= 0 ?\ 345 (adev)->xcp_mgr->xcp[(xcp_id)].mem_id : -1) 346 347 #define KFD_XCP_MEMORY_SIZE(adev, xcp_id) amdgpu_amdkfd_xcp_memory_size((adev), (xcp_id)) 348 349 350 #if IS_ENABLED(CONFIG_HSA_AMD) 351 void amdgpu_amdkfd_gpuvm_init_mem_limits(void); 352 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev, 353 struct amdgpu_vm *vm); 354 355 /** 356 * @amdgpu_amdkfd_release_notify() - Notify KFD when GEM object is released 357 * 358 * Allows KFD to release its resources associated with the GEM object. 359 */ 360 void amdgpu_amdkfd_release_notify(struct amdgpu_bo *bo); 361 void amdgpu_amdkfd_reserve_system_mem(uint64_t size); 362 #else 363 static inline 364 void amdgpu_amdkfd_gpuvm_init_mem_limits(void) 365 { 366 } 367 368 static inline 369 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev, 370 struct amdgpu_vm *vm) 371 { 372 } 373 374 static inline 375 void amdgpu_amdkfd_release_notify(struct amdgpu_bo *bo) 376 { 377 } 378 #endif 379 380 #if IS_ENABLED(CONFIG_HSA_AMD_SVM) 381 int kgd2kfd_init_zone_device(struct amdgpu_device *adev); 382 #else 383 static inline 384 int kgd2kfd_init_zone_device(struct amdgpu_device *adev) 385 { 386 return 0; 387 } 388 #endif 389 390 /* KGD2KFD callbacks */ 391 int kgd2kfd_quiesce_mm(struct mm_struct *mm, uint32_t trigger); 392 int kgd2kfd_resume_mm(struct mm_struct *mm); 393 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm, 394 struct dma_fence *fence); 395 #if IS_ENABLED(CONFIG_HSA_AMD) 396 int kgd2kfd_init(void); 397 void kgd2kfd_exit(void); 398 struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf); 399 bool kgd2kfd_device_init(struct kfd_dev *kfd, 400 const struct kgd2kfd_shared_resources *gpu_resources); 401 void kgd2kfd_device_exit(struct kfd_dev *kfd); 402 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm); 403 int kgd2kfd_resume_iommu(struct kfd_dev *kfd); 404 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm); 405 int kgd2kfd_pre_reset(struct kfd_dev *kfd); 406 int kgd2kfd_post_reset(struct kfd_dev *kfd); 407 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry); 408 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd); 409 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask); 410 int kgd2kfd_check_and_lock_kfd(void); 411 void kgd2kfd_unlock_kfd(void); 412 #else 413 static inline int kgd2kfd_init(void) 414 { 415 return -ENOENT; 416 } 417 418 static inline void kgd2kfd_exit(void) 419 { 420 } 421 422 static inline 423 struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf) 424 { 425 return NULL; 426 } 427 428 static inline 429 bool kgd2kfd_device_init(struct kfd_dev *kfd, 430 const struct kgd2kfd_shared_resources *gpu_resources) 431 { 432 return false; 433 } 434 435 static inline void kgd2kfd_device_exit(struct kfd_dev *kfd) 436 { 437 } 438 439 static inline void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm) 440 { 441 } 442 443 static int __maybe_unused kgd2kfd_resume_iommu(struct kfd_dev *kfd) 444 { 445 return 0; 446 } 447 448 static inline int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm) 449 { 450 return 0; 451 } 452 453 static inline int kgd2kfd_pre_reset(struct kfd_dev *kfd) 454 { 455 return 0; 456 } 457 458 static inline int kgd2kfd_post_reset(struct kfd_dev *kfd) 459 { 460 return 0; 461 } 462 463 static inline 464 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry) 465 { 466 } 467 468 static inline 469 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd) 470 { 471 } 472 473 static inline 474 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask) 475 { 476 } 477 478 static inline int kgd2kfd_check_and_lock_kfd(void) 479 { 480 return 0; 481 } 482 483 static inline void kgd2kfd_unlock_kfd(void) 484 { 485 } 486 #endif 487 #endif /* AMDGPU_AMDKFD_H_INCLUDED */ 488