drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

   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 */