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/mmu_context.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 const struct kgd2kfd_calls *kgd2kfd;
  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         struct amdkfd_process_info *process_info;
  63
  64         struct amdgpu_sync sync;
  65
  66         bool aql_queue;
  67 };
  68
  69 /* KFD Memory Eviction */
  70 struct amdgpu_amdkfd_fence {
  71         struct dma_fence base;
  72         struct mm_struct *mm;
  73         spinlock_t lock;
  74         char timeline_name[TASK_COMM_LEN];
  75 };
  76
  77 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
  78                                                        struct mm_struct *mm);
  79 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
  80 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
  81
  82 struct amdkfd_process_info {
  83         /* List head of all VMs that belong to a KFD process */
  84         struct list_head vm_list_head;
  85         /* List head for all KFD BOs that belong to a KFD process. */
  86         struct list_head kfd_bo_list;
  87         /* Lock to protect kfd_bo_list */
  88         struct mutex lock;
  89
  90         /* Number of VMs */
  91         unsigned int n_vms;
  92         /* Eviction Fence */
  93         struct amdgpu_amdkfd_fence *eviction_fence;
  94 };
  95
  96 int amdgpu_amdkfd_init(void);
  97 void amdgpu_amdkfd_fini(void);
  98
  99 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
 100 int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
 101 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 102                         const void *ih_ring_entry);
 103 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 104 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 105 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
 106
 107 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 108                                 uint32_t vmid, uint64_t gpu_addr,
 109                                 uint32_t *ib_cmd, uint32_t ib_len);
 110
 111 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
 112 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
 113
 114 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 115
 116 /* Shared API */
 117 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 118                         void **mem_obj, uint64_t *gpu_addr,
 119                         void **cpu_ptr);
 120 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 121 void get_local_mem_info(struct kgd_dev *kgd,
 122                         struct kfd_local_mem_info *mem_info);
 123 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
 124
 125 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 126 void get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 127 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 128
 129 #define read_user_wptr(mmptr, wptr, dst)                                \
 130         ({                                                              \
 131                 bool valid = false;                                     \
 132                 if ((mmptr) && (wptr)) {                                \
 133                         if ((mmptr) == current->mm) {                   \
 134                                 valid = !get_user((dst), (wptr));       \
 135                         } else if (current->mm == NULL) {               \
 136                                 use_mm(mmptr);                          \
 137                                 valid = !get_user((dst), (wptr));       \
 138                                 unuse_mm(mmptr);                        \
 139                         }                                               \
 140                 }                                                       \
 141                 valid;                                                  \
 142         })
 143
 144 /* GPUVM API */
 145 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, void **vm,
 146                                           void **process_info,
 147                                           struct dma_fence **ef);
 148 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 149                                            struct file *filp,
 150                                            void **vm, void **process_info,
 151                                            struct dma_fence **ef);
 152 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 153                                     struct amdgpu_vm *vm);
 154 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
 155 uint32_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
 156 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 157                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 158                 void *vm, struct kgd_mem **mem,
 159                 uint64_t *offset, uint32_t flags);
 160 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 161                 struct kgd_dev *kgd, struct kgd_mem *mem);
 162 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 163                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 164 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 165                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 166 int amdgpu_amdkfd_gpuvm_sync_memory(
 167                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 168 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 169                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 170 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 171                                             struct dma_fence **ef);
 172
 173 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 174 void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo);
 175
 176 #endif /* AMDGPU_AMDKFD_H_INCLUDED */