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};
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 /* __MSM_MMU_H__ */
62