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/mmu_context.h> 30 #include <kgd_kfd_interface.h> 31 32 struct amdgpu_device; 33 34 struct kgd_mem { 35 struct amdgpu_bo *bo; 36 uint64_t gpu_addr; 37 void *cpu_ptr; 38 }; 39 40 int amdgpu_amdkfd_init(void); 41 void amdgpu_amdkfd_fini(void); 42 43 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev); 44 int amdgpu_amdkfd_resume(struct amdgpu_device *adev); 45 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev, 46 const void *ih_ring_entry); 47 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev); 48 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev); 49 void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev); 50 51 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void); 52 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void); 53 54 /* Shared API */ 55 int alloc_gtt_mem(struct kgd_dev *kgd, size_t size, 56 void **mem_obj, uint64_t *gpu_addr, 57 void **cpu_ptr); 58 void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj); 59 void get_local_mem_info(struct kgd_dev *kgd, 60 struct kfd_local_mem_info *mem_info); 61 uint64_t get_gpu_clock_counter(struct kgd_dev *kgd); 62 63 uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd); 64 void get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info); 65 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd); 66 67 #define read_user_wptr(mmptr, wptr, dst) \ 68 ({ \ 69 bool valid = false; \ 70 if ((mmptr) && (wptr)) { \ 71 if ((mmptr) == current->mm) { \ 72 valid = !get_user((dst), (wptr)); \ 73 } else if (current->mm == NULL) { \ 74 use_mm(mmptr); \ 75 valid = !get_user((dst), (wptr)); \ 76 unuse_mm(mmptr); \ 77 } \ 78 } \ 79 valid; \ 80 }) 81 82 #endif /* AMDGPU_AMDKFD_H_INCLUDED */ 83