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 lock 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 lock 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 */ 200