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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2013 Red Hat4 * 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__ */60