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/workqueue.h>
  31 #include <kgd_kfd_interface.h>
  32 #include <drm/ttm/ttm_execbuf_util.h>
  33 #include "amdgpu_sync.h"
  34 #include "amdgpu_vm.h"
  35
  36 extern uint64_t amdgpu_amdkfd_total_mem_size;
  37
  38 struct amdgpu_device;
  39
  40 struct kfd_bo_va_list {
  41         struct list_head bo_list;
  42         struct amdgpu_bo_va *bo_va;
  43         void *kgd_dev;
  44         bool is_mapped;
  45         uint64_t va;
  46         uint64_t pte_flags;
  47 };
  48
  49 struct kgd_mem {
  50         struct mutex lock;
  51         struct amdgpu_bo *bo;
  52         struct list_head bo_va_list;
  53         /* protected by amdkfd_process_info.lock */
  54         struct ttm_validate_buffer validate_list;
  55         struct ttm_validate_buffer resv_list;
  56         uint32_t domain;
  57         unsigned int mapped_to_gpu_memory;
  58         uint64_t va;
  59
  60         uint32_t mapping_flags;
  61
  62         atomic_t invalid;
  63         struct amdkfd_process_info *process_info;
  64         struct page **user_pages;
  65
  66         struct amdgpu_sync sync;
  67
  68         bool aql_queue;
  69 };
  70
  71 /* KFD Memory Eviction */
  72 struct amdgpu_amdkfd_fence {
  73         struct dma_fence base;
  74         struct mm_struct *mm;
  75         spinlock_t lock;
  76         char timeline_name[TASK_COMM_LEN];
  77 };
  78
  79 struct amdgpu_kfd_dev {
  80         struct kfd_dev *dev;
  81         uint64_t vram_used;
  82 };
  83
  84 enum kgd_engine_type {
  85         KGD_ENGINE_PFP = 1,
  86         KGD_ENGINE_ME,
  87         KGD_ENGINE_CE,
  88         KGD_ENGINE_MEC1,
  89         KGD_ENGINE_MEC2,
  90         KGD_ENGINE_RLC,
  91         KGD_ENGINE_SDMA1,
  92         KGD_ENGINE_SDMA2,
  93         KGD_ENGINE_MAX
  94 };
  95
  96 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
  97                                                        struct mm_struct *mm);
  98 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
  99 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
 100
 101 struct amdkfd_process_info {
 102         /* List head of all VMs that belong to a KFD process */
 103         struct list_head vm_list_head;
 104         /* List head for all KFD BOs that belong to a KFD process. */
 105         struct list_head kfd_bo_list;
 106         /* List of userptr BOs that are valid or invalid */
 107         struct list_head userptr_valid_list;
 108         struct list_head userptr_inval_list;
 109         /* Lock to protect kfd_bo_list */
 110         struct mutex lock;
 111
 112         /* Number of VMs */
 113         unsigned int n_vms;
 114         /* Eviction Fence */
 115         struct amdgpu_amdkfd_fence *eviction_fence;
 116
 117         /* MMU-notifier related fields */
 118         atomic_t evicted_bos;
 119         struct delayed_work restore_userptr_work;
 120         struct pid *pid;
 121 };
 122
 123 int amdgpu_amdkfd_init(void);
 124 void amdgpu_amdkfd_fini(void);
 125
 126 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
 127 int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
 128 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 129                         const void *ih_ring_entry);
 130 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 131 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 132 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
 133
 134 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
 135 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 136                                 uint32_t vmid, uint64_t gpu_addr,
 137                                 uint32_t *ib_cmd, uint32_t ib_len);
 138 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
 139
 140 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
 141 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
 142 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_9_0_get_functions(void);
 143
 144 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 145
 146 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
 147
 148 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
 149
 150 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
 151
 152 /* Shared API */
 153 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 154                                 void **mem_obj, uint64_t *gpu_addr,
 155                                 void **cpu_ptr, bool mqd_gfx9);
 156 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 157 uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd,
 158                                       enum kgd_engine_type type);
 159 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
 160                                       struct kfd_local_mem_info *mem_info);
 161 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
 162
 163 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 164 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 165 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 166                                   struct kgd_dev **dmabuf_kgd,
 167                                   uint64_t *bo_size, void *metadata_buffer,
 168                                   size_t buffer_size, uint32_t *metadata_size,
 169                                   uint32_t *flags);
 170 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 171 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
 172
 173 #define read_user_wptr(mmptr, wptr, dst)                                \
 174         ({                                                              \
 175                 bool valid = false;                                     \
 176                 if ((mmptr) && (wptr)) {                                \
 177                         if ((mmptr) == current->mm) {                   \
 178                                 valid = !get_user((dst), (wptr));       \
 179                         } else if (current->mm == NULL) {               \
 180                                 use_mm(mmptr);                          \
 181                                 valid = !get_user((dst), (wptr));       \
 182                                 unuse_mm(mmptr);                        \
 183                         }                                               \
 184                 }                                                       \
 185                 valid;                                                  \
 186         })
 187
 188 /* GPUVM API */
 189 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, unsigned int pasid,
 190                                         void **vm, void **process_info,
 191                                         struct dma_fence **ef);
 192 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 193                                         struct file *filp, unsigned int pasid,
 194                                         void **vm, void **process_info,
 195                                         struct dma_fence **ef);
 196 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 197                                 struct amdgpu_vm *vm);
 198 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
 199 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm);
 200 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
 201 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 202                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 203                 void *vm, struct kgd_mem **mem,
 204                 uint64_t *offset, uint32_t flags);
 205 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 206                 struct kgd_dev *kgd, struct kgd_mem *mem);
 207 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 208                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 209 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 210                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 211 int amdgpu_amdkfd_gpuvm_sync_memory(
 212                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 213 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 214                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 215 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 216                                             struct dma_fence **ef);
 217
 218 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
 219                                               struct kfd_vm_fault_info *info);
 220
 221 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
 222                                       struct dma_buf *dmabuf,
 223                                       uint64_t va, void *vm,
 224                                       struct kgd_mem **mem, uint64_t *size,
 225                                       uint64_t *mmap_offset);
 226
 227 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 228 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
 229
 230 /* KGD2KFD callbacks */
 231 int kgd2kfd_init(void);
 232 void kgd2kfd_exit(void);
 233 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
 234                               const struct kfd2kgd_calls *f2g);
 235 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 236                          const struct kgd2kfd_shared_resources *gpu_resources);
 237 void kgd2kfd_device_exit(struct kfd_dev *kfd);
 238 void kgd2kfd_suspend(struct kfd_dev *kfd);
 239 int kgd2kfd_resume(struct kfd_dev *kfd);
 240 int kgd2kfd_pre_reset(struct kfd_dev *kfd);
 241 int kgd2kfd_post_reset(struct kfd_dev *kfd);
 242 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
 243 int kgd2kfd_quiesce_mm(struct mm_struct *mm);
 244 int kgd2kfd_resume_mm(struct mm_struct *mm);
 245 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
 246                                                struct dma_fence *fence);
 247 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd);
 248
 249 #endif /* AMDGPU_AMDKFD_H_INCLUDED */