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 */ 235