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      1 /*	$NetBSD: amdgpu_mn.h,v 1.2 2021/12/18 23:44:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Christian Knig
     25  */
     26 #ifndef __AMDGPU_MN_H__
     27 #define __AMDGPU_MN_H__
     28 
     29 #include <linux/types.h>
     30 #include <linux/hmm.h>
     31 #include <linux/rwsem.h>
     32 #include <linux/workqueue.h>
     33 #include <linux/interval_tree.h>
     34 
     35 #if defined(CONFIG_HMM_MIRROR)
     36 int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
     37 void amdgpu_mn_unregister(struct amdgpu_bo *bo);
     38 #else
     39 static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
     40 {
     41 	DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
     42 		      "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
     43 	return -ENODEV;
     44 }
     45 static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
     46 #endif
     47 
     48 #endif
     49