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 12 struct 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 20 struct 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 27 static 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 34 struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); 35 struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); 36 37 static 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 44 void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base, 45 dma_addr_t *tran_error); 46 47 #endif /* __MSM_MMU_H__ */ 48