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 const struct kgd2kfd_calls *kgd2kfd; 37 extern uint64_t amdgpu_amdkfd_total_mem_size; 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_kfd_dev { 81 struct kfd_dev *dev; 82 uint64_t vram_used; 83 }; 84 85 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context, 86 struct mm_struct *mm); 87 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm); 88 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f); 89 90 struct amdkfd_process_info { 91 /* List head of all VMs that belong to a KFD process */ 92 struct list_head vm_list_head; 93 /* List head for all KFD BOs that belong to a KFD process. */ 94 struct list_head kfd_bo_list; 95 /* List of userptr BOs that are valid or invalid */ 96 struct list_head userptr_valid_list; 97 struct list_head userptr_inval_list; 98 /* Lock to protect kfd_bo_list */ 99 struct mutex lock; 100 101 /* Number of VMs */ 102 unsigned int n_vms; 103 /* Eviction Fence */ 104 struct amdgpu_amdkfd_fence *eviction_fence; 105 106 /* MMU-notifier related fields */ 107 atomic_t evicted_bos; 108 struct delayed_work restore_userptr_work; 109 struct pid *pid; 110 }; 111 112 int amdgpu_amdkfd_init(void); 113 void amdgpu_amdkfd_fini(void); 114 115 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev); 116 int amdgpu_amdkfd_resume(struct amdgpu_device *adev); 117 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev, 118 const void *ih_ring_entry); 119 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev); 120 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev); 121 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev); 122 123 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm); 124 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine, 125 uint32_t vmid, uint64_t gpu_addr, 126 uint32_t *ib_cmd, uint32_t ib_len); 127 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle); 128 129 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void); 130 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void); 131 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_9_0_get_functions(void); 132 133 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid); 134 135 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev); 136 137 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev); 138 139 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd); 140 141 /* Shared API */ 142 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size, 143 void **mem_obj, uint64_t *gpu_addr, 144 void **cpu_ptr, bool mqd_gfx9); 145 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj); 146 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd, 147 struct kfd_local_mem_info *mem_info); 148 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd); 149 150 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd); 151 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info); 152 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd, 153 struct kgd_dev **dmabuf_kgd, 154 uint64_t *bo_size, void *metadata_buffer, 155 size_t buffer_size, uint32_t *metadata_size, 156 uint32_t *flags); 157 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd); 158 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd); 159 160 #define read_user_wptr(mmptr, wptr, dst) \ 161 ({ \ 162 bool valid = false; \ 163 if ((mmptr) && (wptr)) { \ 164 if ((mmptr) == current->mm) { \ 165 valid = !get_user((dst), (wptr)); \ 166 } else if (current->mm == NULL) { \ 167 use_mm(mmptr); \ 168 valid = !get_user((dst), (wptr)); \ 169 unuse_mm(mmptr); \ 170 } \ 171 } \ 172 valid; \ 173 }) 174 175 /* GPUVM API */ 176 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, unsigned int pasid, 177 void **vm, void **process_info, 178 struct dma_fence **ef); 179 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd, 180 struct file *filp, unsigned int pasid, 181 void **vm, void **process_info, 182 struct dma_fence **ef); 183 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev, 184 struct amdgpu_vm *vm); 185 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm); 186 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm); 187 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm); 188 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( 189 struct kgd_dev *kgd, uint64_t va, uint64_t size, 190 void *vm, struct kgd_mem **mem, 191 uint64_t *offset, uint32_t flags); 192 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( 193 struct kgd_dev *kgd, struct kgd_mem *mem); 194 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu( 195 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm); 196 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( 197 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm); 198 int amdgpu_amdkfd_gpuvm_sync_memory( 199 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr); 200 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd, 201 struct kgd_mem *mem, void **kptr, uint64_t *size); 202 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info, 203 struct dma_fence **ef); 204 205 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd, 206 struct kfd_vm_fault_info *info); 207 208 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd, 209 struct dma_buf *dmabuf, 210 uint64_t va, void *vm, 211 struct kgd_mem **mem, uint64_t *size, 212 uint64_t *mmap_offset); 213 214 void amdgpu_amdkfd_gpuvm_init_mem_limits(void); 215 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo); 216 217 #endif /* AMDGPU_AMDKFD_H_INCLUDED */ 218