forked from mirrors/linux
e5eaa7cc0c
An upcoming change in the hmm_range_register API requires passing in a pointer to an hmm_mirror instead of mm_struct. To access the hmm_mirror we need pass bo instead of ttm to amdgpu_ttm_tt_get_user_pages because mirror is part of amdgpu_mn structure, which is accessible from bo. v2: fix building without CONFIG_HMM_MIRROR (Arnd) Signed-off-by: Philip Yang <Philip.Yang@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
/*
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* Copyright 2017 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Christian König
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*/
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#ifndef __AMDGPU_MN_H__
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#define __AMDGPU_MN_H__
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#include <linux/types.h>
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#include <linux/hmm.h>
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#include <linux/rwsem.h>
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#include <linux/workqueue.h>
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#include <linux/interval_tree.h>
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enum amdgpu_mn_type {
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AMDGPU_MN_TYPE_GFX,
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AMDGPU_MN_TYPE_HSA,
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};
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/**
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* struct amdgpu_mn
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*
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* @adev: amdgpu device pointer
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* @mm: process address space
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* @type: type of MMU notifier
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* @work: destruction work item
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* @node: hash table node to find structure by adev and mn
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* @lock: rw semaphore protecting the notifier nodes
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* @objects: interval tree containing amdgpu_mn_nodes
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* @mirror: HMM mirror function support
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*
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* Data for each amdgpu device and process address space.
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*/
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struct amdgpu_mn {
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/* constant after initialisation */
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struct amdgpu_device *adev;
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struct mm_struct *mm;
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enum amdgpu_mn_type type;
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/* only used on destruction */
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struct work_struct work;
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/* protected by adev->mn_lock */
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struct hlist_node node;
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/* objects protected by lock */
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struct rw_semaphore lock;
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struct rb_root_cached objects;
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#ifdef CONFIG_HMM_MIRROR
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/* HMM mirror */
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struct hmm_mirror mirror;
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#endif
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};
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#if defined(CONFIG_HMM_MIRROR)
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void amdgpu_mn_lock(struct amdgpu_mn *mn);
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void amdgpu_mn_unlock(struct amdgpu_mn *mn);
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struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
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enum amdgpu_mn_type type);
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int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
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void amdgpu_mn_unregister(struct amdgpu_bo *bo);
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void amdgpu_hmm_init_range(struct hmm_range *range);
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#else
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static inline void amdgpu_mn_lock(struct amdgpu_mn *mn) {}
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static inline void amdgpu_mn_unlock(struct amdgpu_mn *mn) {}
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static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
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enum amdgpu_mn_type type)
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{
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return NULL;
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}
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static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
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{
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DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
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"add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
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return -ENODEV;
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}
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static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
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#endif
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#endif
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