| 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 | #include <linux/mmu_notifier.h> |
|---|
| 33 | |
|---|
| 34 | int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier, |
|---|
| 35 | uint64_t start, uint64_t npages, bool readonly, |
|---|
| 36 | void *owner, struct page **pages, |
|---|
| 37 | struct hmm_range **phmm_range); |
|---|
| 38 | bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range); |
|---|
| 39 | |
|---|
| 40 | #if defined(CONFIG_HMM_MIRROR) |
|---|
| 41 | int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr); |
|---|
| 42 | void amdgpu_hmm_unregister(struct amdgpu_bo *bo); |
|---|
| 43 | #else |
|---|
| 44 | static inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr) |
|---|
| 45 | { |
|---|
| 46 | 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_hmm_unregister(struct amdgpu_bo *bo) {} |
|---|
| 51 | #endif |
|---|
| 52 | |
|---|
| 53 | #endif |
|---|
| 54 | |
|---|
