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 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 21 struct 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 28 static 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 35 struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); 36 struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); 37 38 static 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 45 void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base, 46 dma_addr_t *tran_error); 47 48 #endif /* __MSM_MMU_H__ */ 49