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 <kgd_kfd_interface.h> 33 #include <drm/ttm/ttm_execbuf_util.h> 34 #include "amdgpu_sync.h" 35 #include "amdgpu_vm.h" 36 37 extern uint64_t amdgpu_amdkfd_total_mem_size; 38 39 struct amdgpu_device; 40 41 struct kfd_bo_va_list { 42 struct list_head bo_list; 43 struct amdgpu_bo_va *bo_va; 44 void *kgd_dev; 45 bool is_mapped; 46 uint64_t va; 47 uint64_t pte_flags; 48 }; 49 50 struct kgd_mem { 51 struct mutex lock; 52 struct amdgpu_bo *bo; 53 struct list_head bo_va_list; 54 /* protected by amdkfd_process_info.lock */ 55 struct ttm_validate_buffer validate_list; 56 struct ttm_validate_buffer resv_list; 57 uint32_t domain; 58 unsigned int mapped_to_gpu_memory; 59 uint64_t va; 60 61 uint32_t alloc_flags; 62 63 atomic_t invalid; 64 struct amdkfd_process_info *process_info; 65 66 struct amdgpu_sync sync; 67 68 bool aql_queue; 69 bool is_imported; 70 }; 71 72 /* KFD Memory Eviction */ 73 struct amdgpu_amdkfd_fence { 74 struct dma_fence base; 75 struct mm_struct *mm; 76 spinlock_t lock; 77 char timeline_name[TASK_COMM_LEN]; 78 }; 79 80 struct amdgpu_kfd_dev { 81 struct kfd_dev *dev; 82 uint64_t vram_used; 83 bool init_complete; 84 }; 85 86 enum kgd_engine_type { 87 KGD_ENGINE_PFP = 1, 88 KGD_ENGINE_ME, 89 KGD_ENGINE_CE, 90 KGD_ENGINE_MEC1, 91 KGD_ENGINE_MEC2, 92 KGD_ENGINE_RLC, 93 KGD_ENGINE_SDMA1, 94 KGD_ENGINE_SDMA2, 95 KGD_ENGINE_MAX 96 }; 97 98 99 struct amdkfd_process_info { 100 /* List head of all VMs that belong to a KFD process */ 101 struct list_head vm_list_head; 102 /* List head for all KFD BOs that belong to a KFD process. */ 103 struct list_head kfd_bo_list; 104 /* List of userptr BOs that are valid or invalid */ 105 struct list_head userptr_valid_list; 106 struct list_head userptr_inval_list; 107 /* Lock to protect kfd_bo_list */ 108 struct mutex lock; 109 110 /* Number of VMs */ 111 unsigned int n_vms; 112 /* Eviction Fence */ 113 struct amdgpu_amdkfd_fence *eviction_fence; 114 115 /* MMU-notifier related fields */ 116 atomic_t evicted_bos; 117 struct delayed_work restore_userptr_work; 118 struct pid *pid; 119 }; 120 121 int amdgpu_amdkfd_init(void); 122 void amdgpu_amdkfd_fini(void); 123 124 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm); 125 int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm); 126 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev, 127 const void *ih_ring_entry); 128 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev); 129 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev); 130 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev); 131 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine, 132 uint32_t vmid, uint64_t gpu_addr, 133 uint32_t *ib_cmd, uint32_t ib_len); 134 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle); 135 bool amdgpu_amdkfd_have_atomics_support(struct kgd_dev *kgd); 136 int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct kgd_dev *kgd, uint16_t vmid); 137 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct kgd_dev *kgd, uint16_t pasid); 138 139 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid); 140 141 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev); 142 143 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev); 144 145 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd); 146 147 int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev, 148 int queue_bit); 149 150 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context, 151 struct mm_struct *mm); 152 #if IS_ENABLED(CONFIG_HSA_AMD) 153 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm); 154 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f); 155 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo); 156 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm); 157 #else 158 static inline 159 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm) 160 { 161 return false; 162 } 163 164 static inline 165 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f) 166 { 167 return NULL; 168 } 169 170 static inline 171 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo) 172 { 173 return 0; 174 } 175 176 static inline 177 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm) 178 { 179 return 0; 180 } 181 #endif 182 /* Shared API */ 183 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size, 184 void **mem_obj, uint64_t *gpu_addr, 185 void **cpu_ptr, bool mqd_gfx9); 186 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj); 187 int amdgpu_amdkfd_alloc_gws(struct kgd_dev *kgd, size_t size, void **mem_obj); 188 void amdgpu_amdkfd_free_gws(struct kgd_dev *kgd, void *mem_obj); 189 int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem); 190 int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem); 191 uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd, 192 enum kgd_engine_type type); 193 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd, 194 struct kfd_local_mem_info *mem_info); 195 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd); 196 197 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd); 198 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info); 199 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd, 200 struct kgd_dev **dmabuf_kgd, 201 uint64_t *bo_size, void *metadata_buffer, 202 size_t buffer_size, uint32_t *metadata_size, 203 uint32_t *flags); 204 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd); 205 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd); 206 uint64_t amdgpu_amdkfd_get_unique_id(struct kgd_dev *kgd); 207 uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd); 208 uint32_t amdgpu_amdkfd_get_num_gws(struct kgd_dev *kgd); 209 uint32_t amdgpu_amdkfd_get_asic_rev_id(struct kgd_dev *kgd); 210 int amdgpu_amdkfd_get_noretry(struct kgd_dev *kgd); 211 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src); 212 213 /* Read user wptr from a specified user address space with page fault 214 * disabled. The memory must be pinned and mapped to the hardware when 215 * this is called in hqd_load functions, so it should never fault in 216 * the first place. This resolves a circular lock dependency involving 217 * four locks, including the DQM lock and mmap_lock. 218 */ 219 #define read_user_wptr(mmptr, wptr, dst) \ 220 ({ \ 221 bool valid = false; \ 222 if ((mmptr) && (wptr)) { \ 223 pagefault_disable(); \ 224 if ((mmptr) == current->mm) { \ 225 valid = !get_user((dst), (wptr)); \ 226 } else if (current->flags & PF_KTHREAD) { \ 227 kthread_use_mm(mmptr); \ 228 valid = !get_user((dst), (wptr)); \ 229 kthread_unuse_mm(mmptr); \ 230 } \ 231 pagefault_enable(); \ 232 } \ 233 valid; \ 234 }) 235 236 /* GPUVM API */ 237 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd, 238 struct file *filp, u32 pasid, 239 void **vm, void **process_info, 240 struct dma_fence **ef); 241 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm); 242 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm); 243 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( 244 struct kgd_dev *kgd, uint64_t va, uint64_t size, 245 void *vm, struct kgd_mem **mem, 246 uint64_t *offset, uint32_t flags); 247 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( 248 struct kgd_dev *kgd, struct kgd_mem *mem, uint64_t *size); 249 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu( 250 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm); 251 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( 252 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm); 253 int amdgpu_amdkfd_gpuvm_sync_memory( 254 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr); 255 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd, 256 struct kgd_mem *mem, void **kptr, uint64_t *size); 257 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info, 258 struct dma_fence **ef); 259 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd, 260 struct kfd_vm_fault_info *info); 261 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd, 262 struct dma_buf *dmabuf, 263 uint64_t va, void *vm, 264 struct kgd_mem **mem, uint64_t *size, 265 uint64_t *mmap_offset); 266 int amdgpu_amdkfd_get_tile_config(struct kgd_dev *kgd, 267 struct tile_config *config); 268 #if IS_ENABLED(CONFIG_HSA_AMD) 269 void amdgpu_amdkfd_gpuvm_init_mem_limits(void); 270 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev, 271 struct amdgpu_vm *vm); 272 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo); 273 #else 274 static inline 275 void amdgpu_amdkfd_gpuvm_init_mem_limits(void) 276 { 277 } 278 279 static inline 280 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev, 281 struct amdgpu_vm *vm) 282 { 283 } 284 285 static inline 286 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo) 287 { 288 } 289 #endif 290 /* KGD2KFD callbacks */ 291 int kgd2kfd_quiesce_mm(struct mm_struct *mm); 292 int kgd2kfd_resume_mm(struct mm_struct *mm); 293 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm, 294 struct dma_fence *fence); 295 #if IS_ENABLED(CONFIG_HSA_AMD) 296 int kgd2kfd_init(void); 297 void kgd2kfd_exit(void); 298 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev, 299 unsigned int asic_type, bool vf); 300 bool kgd2kfd_device_init(struct kfd_dev *kfd, 301 struct drm_device *ddev, 302 const struct kgd2kfd_shared_resources *gpu_resources); 303 void kgd2kfd_device_exit(struct kfd_dev *kfd); 304 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm); 305 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm); 306 int kgd2kfd_pre_reset(struct kfd_dev *kfd); 307 int kgd2kfd_post_reset(struct kfd_dev *kfd); 308 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry); 309 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd); 310 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint32_t throttle_bitmask); 311 #else 312 static inline int kgd2kfd_init(void) 313 { 314 return -ENOENT; 315 } 316 317 static inline void kgd2kfd_exit(void) 318 { 319 } 320 321 static inline 322 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev, 323 unsigned int asic_type, bool vf) 324 { 325 return NULL; 326 } 327 328 static inline 329 bool kgd2kfd_device_init(struct kfd_dev *kfd, struct drm_device *ddev, 330 const struct kgd2kfd_shared_resources *gpu_resources) 331 { 332 return false; 333 } 334 335 static inline void kgd2kfd_device_exit(struct kfd_dev *kfd) 336 { 337 } 338 339 static inline void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm) 340 { 341 } 342 343 static inline int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm) 344 { 345 return 0; 346 } 347 348 static inline int kgd2kfd_pre_reset(struct kfd_dev *kfd) 349 { 350 return 0; 351 } 352 353 static inline int kgd2kfd_post_reset(struct kfd_dev *kfd) 354 { 355 return 0; 356 } 357 358 static inline 359 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry) 360 { 361 } 362 363 static inline 364 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd) 365 { 366 } 367 368 static inline 369 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint32_t throttle_bitmask) 370 { 371 } 372 #endif 373 #endif /* AMDGPU_AMDKFD_H_INCLUDED */ 374