Line data    Source code

       1             : /*
       2             :  * Copyright 2017 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             :  * Authors: Christian König
      23             :  */
      24             : #ifndef __AMDGPU_MN_H__
      25             : #define __AMDGPU_MN_H__
      26             : 
      27             : #include <linux/types.h>
      28             : #include <linux/hmm.h>
      29             : #include <linux/rwsem.h>
      30             : #include <linux/workqueue.h>
      31             : #include <linux/interval_tree.h>
      32             : 
      33             : int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
      34             :                                struct mm_struct *mm, struct page **pages,
      35             :                                uint64_t start, uint64_t npages,
      36             :                                struct hmm_range **phmm_range, bool readonly,
      37             :                                bool mmap_locked, void *owner);
      38             : int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
      39             : 
      40             : #if defined(CONFIG_HMM_MIRROR)
      41             : int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
      42             : void amdgpu_mn_unregister(struct amdgpu_bo *bo);
      43             : #else
      44             : static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
      45             : {
      46           0 :         DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
      47             :                       "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
      48             :         return -ENODEV;
      49             : }
      50             : static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
      51             : #endif
      52             : 
      53             : #endif