1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) 2013 Red Hat |
4 | * Author: Rob Clark <robdclark@gmail.com> |
5 | */ |
6 | |
7 | #ifndef __MSM_MMU_H__ |
8 | #define __MSM_MMU_H__ |
9 | |
10 | #include <linux/iommu.h> |
11 | |
12 | struct msm_mmu_funcs { |
13 | void (*detach)(struct msm_mmu *mmu); |
14 | int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, |
15 | size_t len, int prot); |
16 | int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len); |
17 | void (*destroy)(struct msm_mmu *mmu); |
18 | void (*resume_translation)(struct msm_mmu *mmu); |
19 | }; |
20 | |
21 | enum msm_mmu_type { |
22 | MSM_MMU_GPUMMU, |
23 | MSM_MMU_IOMMU, |
24 | MSM_MMU_IOMMU_PAGETABLE, |
25 | }; |
26 | |
27 | struct msm_mmu { |
28 | const struct msm_mmu_funcs *funcs; |
29 | struct device *dev; |
30 | int (*handler)(void *arg, unsigned long iova, int flags, void *data); |
31 | void *arg; |
32 | enum msm_mmu_type type; |
33 | }; |
34 | |
35 | static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, |
36 | const struct msm_mmu_funcs *funcs, enum msm_mmu_type type) |
37 | { |
38 | mmu->dev = dev; |
39 | mmu->funcs = funcs; |
40 | mmu->type = type; |
41 | } |
42 | |
43 | struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks); |
44 | struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks); |
45 | struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); |
46 | |
47 | static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg, |
48 | int (*handler)(void *arg, unsigned long iova, int flags, void *data)) |
49 | { |
50 | mmu->arg = arg; |
51 | mmu->handler = handler; |
52 | } |
53 | |
54 | struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent); |
55 | |
56 | void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base, |
57 | dma_addr_t *tran_error); |
58 | |
59 | |
60 | int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr, |
61 | int *asid); |
62 | struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu); |
63 | |
64 | #endif /* __MSM_MMU_H__ */ |
65 | |