msm_mmu.h (1600B)
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 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, struct iommu_domain *domain); 44struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); 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 55void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base, 56 dma_addr_t *tran_error); 57 58 59int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr, 60 int *asid); 61 62#endif /* __MSM_MMU_H__ */