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 <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 const struct kgd2kfd_calls *kgd2kfd;
  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 mapping_flags;
  62
  63         atomic_t invalid;
  64         struct amdkfd_process_info *process_info;
  65         struct page **user_pages;
  66
  67         struct amdgpu_sync sync;
  68
  69         bool aql_queue;
  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_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
  81                                                        struct mm_struct *mm);
  82 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
  83 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
  84
  85 struct amdkfd_process_info {
  86         /* List head of all VMs that belong to a KFD process */
  87         struct list_head vm_list_head;
  88         /* List head for all KFD BOs that belong to a KFD process. */
  89         struct list_head kfd_bo_list;
  90         /* List of userptr BOs that are valid or invalid */
  91         struct list_head userptr_valid_list;
  92         struct list_head userptr_inval_list;
  93         /* Lock to protect kfd_bo_list */
  94         struct mutex lock;
  95
  96         /* Number of VMs */
  97         unsigned int n_vms;
  98         /* Eviction Fence */
  99         struct amdgpu_amdkfd_fence *eviction_fence;
 100
 101         /* MMU-notifier related fields */
 102         atomic_t evicted_bos;
 103         struct delayed_work restore_userptr_work;
 104         struct pid *pid;
 105 };
 106
 107 int amdgpu_amdkfd_init(void);
 108 void amdgpu_amdkfd_fini(void);
 109
 110 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
 111 int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
 112 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 113                         const void *ih_ring_entry);
 114 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 115 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 116 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
 117
 118 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
 119 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 120                                 uint32_t vmid, uint64_t gpu_addr,
 121                                 uint32_t *ib_cmd, uint32_t ib_len);
 122 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
 123
 124 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
 125 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
 126 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_9_0_get_functions(void);
 127
 128 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 129
 130 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
 131
 132 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
 133
 134 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
 135
 136 /* Shared API */
 137 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 138                         void **mem_obj, uint64_t *gpu_addr,
 139                         void **cpu_ptr, bool mqd_gfx9);
 140 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 141 void get_local_mem_info(struct kgd_dev *kgd,
 142                         struct kfd_local_mem_info *mem_info);
 143 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
 144
 145 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 146 void get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 147 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 148
 149 #define read_user_wptr(mmptr, wptr, dst)                                \
 150         ({                                                              \
 151                 bool valid = false;                                     \
 152                 if ((mmptr) && (wptr)) {                                \
 153                         if ((mmptr) == current->mm) {                   \
 154                                 valid = !get_user((dst), (wptr));       \
 155                         } else if (current->mm == NULL) {               \
 156                                 use_mm(mmptr);                          \
 157                                 valid = !get_user((dst), (wptr));       \
 158                                 unuse_mm(mmptr);                        \
 159                         }                                               \
 160                 }                                                       \
 161                 valid;                                                  \
 162         })
 163
 164 /* GPUVM API */
 165 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, void **vm,
 166                                         void **process_info,
 167                                         struct dma_fence **ef);
 168 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 169                                         struct file *filp,
 170                                         void **vm, void **process_info,
 171                                         struct dma_fence **ef);
 172 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 173                                 struct amdgpu_vm *vm);
 174 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
 175 uint32_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
 176 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 177                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 178                 void *vm, struct kgd_mem **mem,
 179                 uint64_t *offset, uint32_t flags);
 180 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 181                 struct kgd_dev *kgd, struct kgd_mem *mem);
 182 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 183                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 184 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 185                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 186 int amdgpu_amdkfd_gpuvm_sync_memory(
 187                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 188 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 189                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 190 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 191                                             struct dma_fence **ef);
 192
 193 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
 194                                               struct kfd_vm_fault_info *info);
 195
 196 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 197 void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo);
 198
 199 #endif /* AMDGPU_AMDKFD_H_INCLUDED */