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 enum TLB_FLUSH_TYPE {
  40         TLB_FLUSH_LEGACY = 0,
  41         TLB_FLUSH_LIGHTWEIGHT,
  42         TLB_FLUSH_HEAVYWEIGHT
  43 };
  44
  45 struct amdgpu_device;
  46
  47 enum kfd_mem_attachment_type {
  48         KFD_MEM_ATT_SHARED,     /* Share kgd_mem->bo or another attachment's */
  49         KFD_MEM_ATT_USERPTR,    /* SG bo to DMA map pages from a userptr bo */
  50         KFD_MEM_ATT_DMABUF,     /* DMAbuf to DMA map TTM BOs */
  51 };
  52
  53 struct kfd_mem_attachment {
  54         struct list_head list;
  55         enum kfd_mem_attachment_type type;
  56         bool is_mapped;
  57         struct amdgpu_bo_va *bo_va;
  58         struct amdgpu_device *adev;
  59         uint64_t va;
  60         uint64_t pte_flags;
  61 };
  62
  63 struct kgd_mem {
  64         struct mutex lock;
  65         struct amdgpu_bo *bo;
  66         struct dma_buf *dmabuf;
  67         struct list_head attachments;
  68         /* protected by amdkfd_process_info.lock */
  69         struct ttm_validate_buffer validate_list;
  70         struct ttm_validate_buffer resv_list;
  71         uint32_t domain;
  72         unsigned int mapped_to_gpu_memory;
  73         uint64_t va;
  74
  75         uint32_t alloc_flags;
  76
  77         atomic_t invalid;
  78         struct amdkfd_process_info *process_info;
  79
  80         struct amdgpu_sync sync;
  81
  82         bool aql_queue;
  83         bool is_imported;
  84 };
  85
  86 /* KFD Memory Eviction */
  87 struct amdgpu_amdkfd_fence {
  88         struct dma_fence base;
  89         struct mm_struct *mm;
  90         spinlock_t lock;
  91         char timeline_name[TASK_COMM_LEN];
  92         struct svm_range_bo *svm_bo;
  93 };
  94
  95 struct amdgpu_kfd_dev {
  96         struct kfd_dev *dev;
  97         uint64_t vram_used;
  98         bool init_complete;
  99 };
 100
 101 enum kgd_engine_type {
 102         KGD_ENGINE_PFP = 1,
 103         KGD_ENGINE_ME,
 104         KGD_ENGINE_CE,
 105         KGD_ENGINE_MEC1,
 106         KGD_ENGINE_MEC2,
 107         KGD_ENGINE_RLC,
 108         KGD_ENGINE_SDMA1,
 109         KGD_ENGINE_SDMA2,
 110         KGD_ENGINE_MAX
 111 };
 112
 113
 114 struct amdkfd_process_info {
 115         /* List head of all VMs that belong to a KFD process */
 116         struct list_head vm_list_head;
 117         /* List head for all KFD BOs that belong to a KFD process. */
 118         struct list_head kfd_bo_list;
 119         /* List of userptr BOs that are valid or invalid */
 120         struct list_head userptr_valid_list;
 121         struct list_head userptr_inval_list;
 122         /* Lock to protect kfd_bo_list */
 123         struct mutex lock;
 124
 125         /* Number of VMs */
 126         unsigned int n_vms;
 127         /* Eviction Fence */
 128         struct amdgpu_amdkfd_fence *eviction_fence;
 129
 130         /* MMU-notifier related fields */
 131         atomic_t evicted_bos;
 132         struct delayed_work restore_userptr_work;
 133         struct pid *pid;
 134 };
 135
 136 int amdgpu_amdkfd_init(void);
 137 void amdgpu_amdkfd_fini(void);
 138
 139 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm);
 140 int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm);
 141 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 142                         const void *ih_ring_entry);
 143 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 144 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 145 void amdgpu_amdkfd_device_fini_sw(struct amdgpu_device *adev);
 146 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 147                                 uint32_t vmid, uint64_t gpu_addr,
 148                                 uint32_t *ib_cmd, uint32_t ib_len);
 149 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
 150 bool amdgpu_amdkfd_have_atomics_support(struct kgd_dev *kgd);
 151 int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct kgd_dev *kgd, uint16_t vmid);
 152 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct kgd_dev *kgd, uint16_t pasid,
 153                                       enum TLB_FLUSH_TYPE flush_type);
 154
 155 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 156
 157 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
 158
 159 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
 160
 161 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
 162
 163 int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
 164                                         int queue_bit);
 165
 166 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
 167                                 struct mm_struct *mm,
 168                                 struct svm_range_bo *svm_bo);
 169 #if IS_ENABLED(CONFIG_HSA_AMD)
 170 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
 171 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
 172 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo);
 173 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
 174 #else
 175 static inline
 176 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm)
 177 {
 178         return false;
 179 }
 180
 181 static inline
 182 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f)
 183 {
 184         return NULL;
 185 }
 186
 187 static inline
 188 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo)
 189 {
 190         return 0;
 191 }
 192
 193 static inline
 194 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm)
 195 {
 196         return 0;
 197 }
 198 #endif
 199 /* Shared API */
 200 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 201                                 void **mem_obj, uint64_t *gpu_addr,
 202                                 void **cpu_ptr, bool mqd_gfx9);
 203 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 204 int amdgpu_amdkfd_alloc_gws(struct kgd_dev *kgd, size_t size, void **mem_obj);
 205 void amdgpu_amdkfd_free_gws(struct kgd_dev *kgd, void *mem_obj);
 206 int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem);
 207 int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem);
 208 uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd,
 209                                       enum kgd_engine_type type);
 210 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
 211                                       struct kfd_local_mem_info *mem_info);
 212 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
 213
 214 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 215 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 216 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 217                                   struct kgd_dev **dmabuf_kgd,
 218                                   uint64_t *bo_size, void *metadata_buffer,
 219                                   size_t buffer_size, uint32_t *metadata_size,
 220                                   uint32_t *flags);
 221 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 222 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
 223 uint64_t amdgpu_amdkfd_get_unique_id(struct kgd_dev *kgd);
 224 uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd);
 225 uint32_t amdgpu_amdkfd_get_num_gws(struct kgd_dev *kgd);
 226 uint32_t amdgpu_amdkfd_get_asic_rev_id(struct kgd_dev *kgd);
 227 int amdgpu_amdkfd_get_noretry(struct kgd_dev *kgd);
 228 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src);
 229
 230 /* Read user wptr from a specified user address space with page fault
 231  * disabled. The memory must be pinned and mapped to the hardware when
 232  * this is called in hqd_load functions, so it should never fault in
 233  * the first place. This resolves a circular lock dependency involving
 234  * four locks, including the DQM lock and mmap_lock.
 235  */
 236 #define read_user_wptr(mmptr, wptr, dst)                                \
 237         ({                                                              \
 238                 bool valid = false;                                     \
 239                 if ((mmptr) && (wptr)) {                                \
 240                         pagefault_disable();                            \
 241                         if ((mmptr) == current->mm) {                   \
 242                                 valid = !get_user((dst), (wptr));       \
 243                         } else if (current->flags & PF_KTHREAD) {       \
 244                                 kthread_use_mm(mmptr);                  \
 245                                 valid = !get_user((dst), (wptr));       \
 246                                 kthread_unuse_mm(mmptr);                \
 247                         }                                               \
 248                         pagefault_enable();                             \
 249                 }                                                       \
 250                 valid;                                                  \
 251         })
 252
 253 /* GPUVM API */
 254 #define drm_priv_to_vm(drm_priv)                                        \
 255         (&((struct amdgpu_fpriv *)                                      \
 256                 ((struct drm_file *)(drm_priv))->driver_priv)->vm)
 257
 258 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 259                                         struct file *filp, u32 pasid,
 260                                         void **process_info,
 261                                         struct dma_fence **ef);
 262 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *drm_priv);
 263 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv);
 264 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 265                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 266                 void *drm_priv, struct kgd_mem **mem,
 267                 uint64_t *offset, uint32_t flags);
 268 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 269                 struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv,
 270                 uint64_t *size);
 271 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 272                 struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv);
 273 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 274                 struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv);
 275 int amdgpu_amdkfd_gpuvm_sync_memory(
 276                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 277 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 278                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 279 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 280                                             struct dma_fence **ef);
 281 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
 282                                               struct kfd_vm_fault_info *info);
 283 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
 284                                       struct dma_buf *dmabuf,
 285                                       uint64_t va, void *drm_priv,
 286                                       struct kgd_mem **mem, uint64_t *size,
 287                                       uint64_t *mmap_offset);
 288 int amdgpu_amdkfd_get_tile_config(struct kgd_dev *kgd,
 289                                 struct tile_config *config);
 290 #if IS_ENABLED(CONFIG_HSA_AMD)
 291 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 292 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 293                                 struct amdgpu_vm *vm);
 294 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
 295 void amdgpu_amdkfd_reserve_system_mem(uint64_t size);
 296 #else
 297 static inline
 298 void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
 299 {
 300 }
 301
 302 static inline
 303 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 304                                         struct amdgpu_vm *vm)
 305 {
 306 }
 307
 308 static inline
 309 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo)
 310 {
 311 }
 312 #endif
 313 /* KGD2KFD callbacks */
 314 int kgd2kfd_quiesce_mm(struct mm_struct *mm);
 315 int kgd2kfd_resume_mm(struct mm_struct *mm);
 316 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
 317                                                 struct dma_fence *fence);
 318 #if IS_ENABLED(CONFIG_HSA_AMD)
 319 int kgd2kfd_init(void);
 320 void kgd2kfd_exit(void);
 321 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
 322                               unsigned int asic_type, bool vf);
 323 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 324                          struct drm_device *ddev,
 325                          const struct kgd2kfd_shared_resources *gpu_resources);
 326 void kgd2kfd_device_exit(struct kfd_dev *kfd);
 327 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm);
 328 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm);
 329 int kgd2kfd_pre_reset(struct kfd_dev *kfd);
 330 int kgd2kfd_post_reset(struct kfd_dev *kfd);
 331 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
 332 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd);
 333 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint32_t throttle_bitmask);
 334 #else
 335 static inline int kgd2kfd_init(void)
 336 {
 337         return -ENOENT;
 338 }
 339
 340 static inline void kgd2kfd_exit(void)
 341 {
 342 }
 343
 344 static inline
 345 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
 346                                         unsigned int asic_type, bool vf)
 347 {
 348         return NULL;
 349 }
 350
 351 static inline
 352 bool kgd2kfd_device_init(struct kfd_dev *kfd, struct drm_device *ddev,
 353                                 const struct kgd2kfd_shared_resources *gpu_resources)
 354 {
 355         return false;
 356 }
 357
 358 static inline void kgd2kfd_device_exit(struct kfd_dev *kfd)
 359 {
 360 }
 361
 362 static inline void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
 363 {
 364 }
 365
 366 static inline int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
 367 {
 368         return 0;
 369 }
 370
 371 static inline int kgd2kfd_pre_reset(struct kfd_dev *kfd)
 372 {
 373         return 0;
 374 }
 375
 376 static inline int kgd2kfd_post_reset(struct kfd_dev *kfd)
 377 {
 378         return 0;
 379 }
 380
 381 static inline
 382 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
 383 {
 384 }
 385
 386 static inline
 387 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
 388 {
 389 }
 390
 391 static inline
 392 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint32_t throttle_bitmask)
 393 {
 394 }
 395 #endif
 396 #endif /* AMDGPU_AMDKFD_H_INCLUDED */