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	int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt);
14	void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt);
15	int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
16			unsigned len, int prot);
17	int (*unmap)(struct msm_mmu *mmu, uint64_t iova, unsigned len);
18	void (*destroy)(struct msm_mmu *mmu);
19};
20
21struct msm_mmu {
22	const struct msm_mmu_funcs *funcs;
23	struct device *dev;
24	int (*handler)(void *arg, unsigned long iova, int flags);
25	void *arg;
26};
27
28static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
29		const struct msm_mmu_funcs *funcs)
30{
31	mmu->dev = dev;
32	mmu->funcs = funcs;
33}
34
35struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
36struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
37
38static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
39		int (*handler)(void *arg, unsigned long iova, int flags))
40{
41	mmu->arg = arg;
42	mmu->handler = handler;
43}
44
45void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
46		dma_addr_t *tran_error);
47
48#endif /* __MSM_MMU_H__ */