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
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	void (*resume_translation)(struct msm_mmu *mmu);
19};
20
21enum msm_mmu_type {
22	MSM_MMU_GPUMMU,
23	MSM_MMU_IOMMU,
24	MSM_MMU_IOMMU_PAGETABLE,
25};
26
27struct 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
35static 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
43struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks);
44struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks);
45
46static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
47		int (*handler)(void *arg, unsigned long iova, int flags, void *data))
48{
49	mmu->arg = arg;
50	mmu->handler = handler;
51}
52
53struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
54
55int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
56		int *asid);
57struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu);
58
59#endif /* __MSM_MMU_H__ */