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/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 alloc_flags;
  61
  62         atomic_t invalid;
  63         struct amdkfd_process_info *process_info;
  64
  65         struct amdgpu_sync sync;
  66
  67         bool aql_queue;
  68 };
  69
  70 /* KFD Memory Eviction */
  71 struct amdgpu_amdkfd_fence {
  72         struct dma_fence base;
  73         struct mm_struct *mm;
  74         spinlock_t lock;
  75         char timeline_name[TASK_COMM_LEN];
  76 };
  77
  78 struct amdgpu_kfd_dev {
  79         struct kfd_dev *dev;
  80         uint64_t vram_used;
  81 };
  82
  83 enum kgd_engine_type {
  84         KGD_ENGINE_PFP = 1,
  85         KGD_ENGINE_ME,
  86         KGD_ENGINE_CE,
  87         KGD_ENGINE_MEC1,
  88         KGD_ENGINE_MEC2,
  89         KGD_ENGINE_RLC,
  90         KGD_ENGINE_SDMA1,
  91         KGD_ENGINE_SDMA2,
  92         KGD_ENGINE_MAX
  93 };
  94
  95 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
  96                                                        struct mm_struct *mm);
  97 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
  98 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
  99
 100 struct amdkfd_process_info {
 101         /* List head of all VMs that belong to a KFD process */
 102         struct list_head vm_list_head;
 103         /* List head for all KFD BOs that belong to a KFD process. */
 104         struct list_head kfd_bo_list;
 105         /* List of userptr BOs that are valid or invalid */
 106         struct list_head userptr_valid_list;
 107         struct list_head userptr_inval_list;
 108         /* Lock to protect kfd_bo_list */
 109         struct mutex lock;
 110
 111         /* Number of VMs */
 112         unsigned int n_vms;
 113         /* Eviction Fence */
 114         struct amdgpu_amdkfd_fence *eviction_fence;
 115
 116         /* MMU-notifier related fields */
 117         atomic_t evicted_bos;
 118         struct delayed_work restore_userptr_work;
 119         struct pid *pid;
 120 };
 121
 122 int amdgpu_amdkfd_init(void);
 123 void amdgpu_amdkfd_fini(void);
 124
 125 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
 126 int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
 127 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 128                         const void *ih_ring_entry);
 129 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
 130 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
 131 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
 132
 133 int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
 134 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 135                                 uint32_t vmid, uint64_t gpu_addr,
 136                                 uint32_t *ib_cmd, uint32_t ib_len);
 137 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
 138 bool amdgpu_amdkfd_have_atomics_support(struct kgd_dev *kgd);
 139 int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct kgd_dev *kgd, uint16_t vmid);
 140 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct kgd_dev *kgd, uint16_t pasid);
 141
 142 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 143
 144 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
 145
 146 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
 147
 148 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
 149
 150 /* Shared API */
 151 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 152                                 void **mem_obj, uint64_t *gpu_addr,
 153                                 void **cpu_ptr, bool mqd_gfx9);
 154 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
 155 int amdgpu_amdkfd_alloc_gws(struct kgd_dev *kgd, size_t size, void **mem_obj);
 156 void amdgpu_amdkfd_free_gws(struct kgd_dev *kgd, void *mem_obj);
 157 int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem);
 158 int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem);
 159 uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd,
 160                                       enum kgd_engine_type type);
 161 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
 162                                       struct kfd_local_mem_info *mem_info);
 163 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
 164
 165 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
 166 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
 167 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 168                                   struct kgd_dev **dmabuf_kgd,
 169                                   uint64_t *bo_size, void *metadata_buffer,
 170                                   size_t buffer_size, uint32_t *metadata_size,
 171                                   uint32_t *flags);
 172 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
 173 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
 174 uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd);
 175 uint32_t amdgpu_amdkfd_get_num_gws(struct kgd_dev *kgd);
 176 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src);
 177
 178 /* Read user wptr from a specified user address space with page fault
 179  * disabled. The memory must be pinned and mapped to the hardware when
 180  * this is called in hqd_load functions, so it should never fault in
 181  * the first place. This resolves a circular lock dependency involving
 182  * four locks, including the DQM lock and mmap_sem.
 183  */
 184 #define read_user_wptr(mmptr, wptr, dst)                                \
 185         ({                                                              \
 186                 bool valid = false;                                     \
 187                 if ((mmptr) && (wptr)) {                                \
 188                         pagefault_disable();                            \
 189                         if ((mmptr) == current->mm) {                   \
 190                                 valid = !get_user((dst), (wptr));       \
 191                         } else if (current->mm == NULL) {               \
 192                                 use_mm(mmptr);                          \
 193                                 valid = !get_user((dst), (wptr));       \
 194                                 unuse_mm(mmptr);                        \
 195                         }                                               \
 196                         pagefault_enable();                             \
 197                 }                                                       \
 198                 valid;                                                  \
 199         })
 200
 201 /* GPUVM API */
 202 int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, unsigned int pasid,
 203                                         void **vm, void **process_info,
 204                                         struct dma_fence **ef);
 205 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
 206                                         struct file *filp, unsigned int pasid,
 207                                         void **vm, void **process_info,
 208                                         struct dma_fence **ef);
 209 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
 210                                 struct amdgpu_vm *vm);
 211 void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
 212 void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm);
 213 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
 214 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 215                 struct kgd_dev *kgd, uint64_t va, uint64_t size,
 216                 void *vm, struct kgd_mem **mem,
 217                 uint64_t *offset, uint32_t flags);
 218 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 219                 struct kgd_dev *kgd, struct kgd_mem *mem);
 220 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
 221                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 222 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
 223                 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
 224 int amdgpu_amdkfd_gpuvm_sync_memory(
 225                 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
 226 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
 227                 struct kgd_mem *mem, void **kptr, uint64_t *size);
 228 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
 229                                             struct dma_fence **ef);
 230
 231 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
 232                                               struct kfd_vm_fault_info *info);
 233
 234 int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
 235                                       struct dma_buf *dmabuf,
 236                                       uint64_t va, void *vm,
 237                                       struct kgd_mem **mem, uint64_t *size,
 238                                       uint64_t *mmap_offset);
 239
 240 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
 241 void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
 242
 243 /* KGD2KFD callbacks */
 244 int kgd2kfd_init(void);
 245 void kgd2kfd_exit(void);
 246 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
 247                               unsigned int asic_type, bool vf);
 248 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 249                          struct drm_device *ddev,
 250                          const struct kgd2kfd_shared_resources *gpu_resources);
 251 void kgd2kfd_device_exit(struct kfd_dev *kfd);
 252 void kgd2kfd_suspend(struct kfd_dev *kfd);
 253 int kgd2kfd_resume(struct kfd_dev *kfd);
 254 int kgd2kfd_pre_reset(struct kfd_dev *kfd);
 255 int kgd2kfd_post_reset(struct kfd_dev *kfd);
 256 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
 257 int kgd2kfd_quiesce_mm(struct mm_struct *mm);
 258 int kgd2kfd_resume_mm(struct mm_struct *mm);
 259 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
 260                                                struct dma_fence *fence);
 261 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd);
 262
 263 #endif /* AMDGPU_AMDKFD_H_INCLUDED */