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
20struct msm_mmu {
21	const struct msm_mmu_funcs *funcs;
22	struct device *dev;
23	int (*handler)(void *arg, unsigned long iova, int flags);
24	void *arg;
25};
26
27static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
28		const struct msm_mmu_funcs *funcs)
29{
30	mmu->dev = dev;
31	mmu->funcs = funcs;
32}
33
34struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
35struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
36
37static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
38		int (*handler)(void *arg, unsigned long iova, int flags))
39{
40	mmu->arg = arg;
41	mmu->handler = handler;
42}
43
44void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
45		dma_addr_t *tran_error);
46
47#endif /* __MSM_MMU_H__ */