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871d812a RC |
1 | /* |
2 | * Copyright (C) 2013 Red Hat | |
3 | * Author: Rob Clark <robdclark@gmail.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #ifndef __MSM_MMU_H__ | |
19 | #define __MSM_MMU_H__ | |
20 | ||
21 | #include <linux/iommu.h> | |
22 | ||
23 | struct msm_mmu_funcs { | |
d72ab599 RC |
24 | int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt); |
25 | void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt); | |
78babc16 | 26 | int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, |
871d812a | 27 | unsigned len, int prot); |
78babc16 | 28 | int (*unmap)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, |
871d812a RC |
29 | unsigned len); |
30 | void (*destroy)(struct msm_mmu *mmu); | |
31 | }; | |
32 | ||
33 | struct msm_mmu { | |
34 | const struct msm_mmu_funcs *funcs; | |
944fc36c | 35 | struct device *dev; |
7f8036b7 RC |
36 | int (*handler)(void *arg, unsigned long iova, int flags); |
37 | void *arg; | |
871d812a RC |
38 | }; |
39 | ||
944fc36c | 40 | static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, |
871d812a RC |
41 | const struct msm_mmu_funcs *funcs) |
42 | { | |
43 | mmu->dev = dev; | |
44 | mmu->funcs = funcs; | |
45 | } | |
46 | ||
944fc36c RC |
47 | struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); |
48 | struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); | |
871d812a | 49 | |
7f8036b7 RC |
50 | static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg, |
51 | int (*handler)(void *arg, unsigned long iova, int flags)) | |
52 | { | |
53 | mmu->arg = arg; | |
54 | mmu->handler = handler; | |
55 | } | |
56 | ||
871d812a | 57 | #endif /* __MSM_MMU_H__ */ |