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 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
  85                                                        struct mm_struct *mm);
  86 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
  87 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
  88
  89 struct amdkfd_process_info {
  90         /* List head of all VMs that belong to a KFD process */
  91         struct list_head vm_list_head;
  92         /* List head for all KFD BOs that belong to a KFD process. */
  93         struct list_head kfd_bo_list;
  94         /* List of userptr BOs that are valid or invalid */
  95         struct list_head userptr_valid_list;
  96         struct list_head userptr_inval_list;
  97         /* Lock to protect kfd_bo_list */
  98         struct mutex lock;
  99
 100         /* Number of VMs */
 101         unsigned int n_vms;
 102         /* Eviction Fence */
 103         struct amdgpu_amdkfd_fence *eviction_fence;
 104
 105         /* MMU-notifier related fields */
 106         atomic_t evicted_bos;
 107         struct delayed_work restore_userptr_work;
 108         struct pid *pid;
 109 };
 110
 111 int amdgpu_amdkfd_init(void);
 112 void amdgpu_amdkfd_fini(void);
 113
 114 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
 115 int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
 116 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 117                         const void *ih_ring_entry);
 118 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 119 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 120 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
 121
 122 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
 123 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 124                                 uint32_t vmid, uint64_t gpu_addr,
 125                                 uint32_t *ib_cmd, uint32_t ib_len);
 126 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
 127
 128 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
 129 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
 130 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_9_0_get_functions(void);
 131
 132 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 133
 134 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
 135
 136 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
 137
 138 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
 139
 140 /* Shared API */
 141 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 142                                 void **mem_obj, uint64_t *gpu_addr,
 143                                 void **cpu_ptr, bool mqd_gfx9);
 144 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 145 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
 146                                       struct kfd_local_mem_info *mem_info);
 147 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
 148
 149 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 150 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 151 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 152                                   struct kgd_dev **dmabuf_kgd,
 153                                   uint64_t *bo_size, void *metadata_buffer,
 154                                   size_t buffer_size, uint32_t *metadata_size,
 155                                   uint32_t *flags);
 156 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 157 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
 158
 159 #define read_user_wptr(mmptr, wptr, dst)                                \
 160         ({                                                              \
 161                 bool valid = false;                                     \
 162                 if ((mmptr) && (wptr)) {                                \
 163                         if ((mmptr) == current->mm) {                   \
 164                                 valid = !get_user((dst), (wptr));       \
 165                         } else if (current->mm == NULL) {               \
 166                                 use_mm(mmptr);                          \
 167                                 valid = !get_user((dst), (wptr));       \
 168                                 unuse_mm(mmptr);                        \
 169                         }                                               \
 170                 }                                                       \
 171                 valid;                                                  \
 172         })
 173
 174 /* GPUVM API */
 175 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, unsigned int pasid,
 176                                         void **vm, void **process_info,
 177                                         struct dma_fence **ef);
 178 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 179                                         struct file *filp, unsigned int pasid,
 180                                         void **vm, void **process_info,
 181                                         struct dma_fence **ef);
 182 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 183                                 struct amdgpu_vm *vm);
 184 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
 185 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm);
 186 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
 187 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 188                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 189                 void *vm, struct kgd_mem **mem,
 190                 uint64_t *offset, uint32_t flags);
 191 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 192                 struct kgd_dev *kgd, struct kgd_mem *mem);
 193 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 194                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 195 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 196                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 197 int amdgpu_amdkfd_gpuvm_sync_memory(
 198                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 199 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 200                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 201 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 202                                             struct dma_fence **ef);
 203
 204 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
 205                                               struct kfd_vm_fault_info *info);
 206
 207 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
 208                                       struct dma_buf *dmabuf,
 209                                       uint64_t va, void *vm,
 210                                       struct kgd_mem **mem, uint64_t *size,
 211                                       uint64_t *mmap_offset);
 212
 213 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 214 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
 215
 216 /* KGD2KFD callbacks */
 217 int kgd2kfd_init(void);
 218 void kgd2kfd_exit(void);
 219 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
 220                               const struct kfd2kgd_calls *f2g);
 221 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 222                          const struct kgd2kfd_shared_resources *gpu_resources);
 223 void kgd2kfd_device_exit(struct kfd_dev *kfd);
 224 void kgd2kfd_suspend(struct kfd_dev *kfd);
 225 int kgd2kfd_resume(struct kfd_dev *kfd);
 226 int kgd2kfd_pre_reset(struct kfd_dev *kfd);
 227 int kgd2kfd_post_reset(struct kfd_dev *kfd);
 228 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
 229 int kgd2kfd_quiesce_mm(struct mm_struct *mm);
 230 int kgd2kfd_resume_mm(struct mm_struct *mm);
 231 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
 232                                                struct dma_fence *fence);
 233
 234 #endif /* AMDGPU_AMDKFD_H_INCLUDED */