amd/amdgpu/amdgpu_mn.h

0001 /*
0002  * Copyright 2017 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Christian König
0023  */
0024 #ifndef __AMDGPU_MN_H__
0025 #define __AMDGPU_MN_H__
0026
0027 #include <linux/types.h>
0028 #include <linux/hmm.h>
0029 #include <linux/rwsem.h>
0030 #include <linux/workqueue.h>
0031 #include <linux/interval_tree.h>
0032
0033 int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
0034                    struct mm_struct *mm, struct page **pages,
0035                    uint64_t start, uint64_t npages,
0036                    struct hmm_range **phmm_range, bool readonly,
0037                    bool mmap_locked, void *owner);
0038 int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
0039
0040 #if defined(CONFIG_HMM_MIRROR)
0041 int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
0042 void amdgpu_mn_unregister(struct amdgpu_bo *bo);
0043 #else
0044 static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
0045 {
0046     DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
0047               "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
0048     return -ENODEV;
0049 }
0050 static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
0051 #endif
0052
0053 #endif