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Linux kernel mirror (for testing)
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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__ */