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7#ifndef __MSM_MMU_H__
8#define __MSM_MMU_H__
9
10#include <linux/iommu.h>
11
12struct 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};
19
20enum msm_mmu_type {
21 MSM_MMU_GPUMMU,
22 MSM_MMU_IOMMU,
23 MSM_MMU_IOMMU_PAGETABLE,
24};
25
26struct msm_mmu {
27 const struct msm_mmu_funcs *funcs;
28 struct device *dev;
29 int (*handler)(void *arg, unsigned long iova, int flags);
30 void *arg;
31 enum msm_mmu_type type;
32};
33
34static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
35 const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
36{
37 mmu->dev = dev;
38 mmu->funcs = funcs;
39 mmu->type = type;
40}
41
42struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
43struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
44
45static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
46 int (*handler)(void *arg, unsigned long iova, int flags))
47{
48 mmu->arg = arg;
49 mmu->handler = handler;
50}
51
52struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
53
54void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
55 dma_addr_t *tran_error);
56
57
58int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
59 int *asid);
60
61#endif
62
