1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */ 2 /* 3 * Copyright 2020-2021 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef KFD_MIGRATE_H_ 26 #define KFD_MIGRATE_H_ 27 28 #include <linux/rwsem.h> 29 #include <linux/list.h> 30 #include <linux/mutex.h> 31 #include <linux/sched/mm.h> 32 #include <linux/hmm.h> 33 #include "kfd_priv.h" 34 #include "kfd_svm.h" 35 36 enum MIGRATION_COPY_DIR { 37 FROM_RAM_TO_VRAM = 0, 38 FROM_VRAM_TO_RAM 39 }; 40 41 int svm_migrate_ram_to_vram(struct svm_range *prange, uint32_t best_loc); 42 int svm_migrate_vram_to_ram(struct svm_range *prange, struct mm_struct *mm); 43 unsigned long 44 svm_migrate_addr_to_pfn(struct amdgpu_device *adev, unsigned long addr); 45 46 #if defined(CONFIG_DEVICE_PRIVATE) 47 int svm_migrate_init(struct amdgpu_device *adev); 48 void svm_migrate_fini(struct amdgpu_device *adev); 49 50 #else 51 static inline int svm_migrate_init(struct amdgpu_device *adev) 52 { 53 DRM_WARN_ONCE("DEVICE_PRIVATE kernel config option is not enabled, " 54 "add CONFIG_DEVICE_PRIVATE=y in config file to fix\n"); 55 return -ENODEV; 56 } 57 static inline void svm_migrate_fini(struct amdgpu_device *adev) {} 58 #endif 59 #endif /* KFD_MIGRATE_H_ */ 60