1871d812aSRob Clark /* 2871d812aSRob Clark * Copyright (C) 2013 Red Hat 3871d812aSRob Clark * Author: Rob Clark <robdclark@gmail.com> 4871d812aSRob Clark * 5871d812aSRob Clark * This program is free software; you can redistribute it and/or modify it 6871d812aSRob Clark * under the terms of the GNU General Public License version 2 as published by 7871d812aSRob Clark * the Free Software Foundation. 8871d812aSRob Clark * 9871d812aSRob Clark * This program is distributed in the hope that it will be useful, but WITHOUT 10871d812aSRob Clark * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11871d812aSRob Clark * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12871d812aSRob Clark * more details. 13871d812aSRob Clark * 14871d812aSRob Clark * You should have received a copy of the GNU General Public License along with 15871d812aSRob Clark * this program. If not, see <http://www.gnu.org/licenses/>. 16871d812aSRob Clark */ 17871d812aSRob Clark 18871d812aSRob Clark #ifndef __MSM_MMU_H__ 19871d812aSRob Clark #define __MSM_MMU_H__ 20871d812aSRob Clark 21871d812aSRob Clark #include <linux/iommu.h> 22871d812aSRob Clark 23871d812aSRob Clark struct msm_mmu_funcs { 24d72ab599SRob Clark int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt); 25d72ab599SRob Clark void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt); 2678babc16SRob Clark int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, 27871d812aSRob Clark unsigned len, int prot); 2870dc51b4SJordan Crouse int (*unmap)(struct msm_mmu *mmu, uint64_t iova, unsigned len); 29871d812aSRob Clark void (*destroy)(struct msm_mmu *mmu); 30871d812aSRob Clark }; 31871d812aSRob Clark 32871d812aSRob Clark struct msm_mmu { 33871d812aSRob Clark const struct msm_mmu_funcs *funcs; 34944fc36cSRob Clark struct device *dev; 357f8036b7SRob Clark int (*handler)(void *arg, unsigned long iova, int flags); 367f8036b7SRob Clark void *arg; 37871d812aSRob Clark }; 38871d812aSRob Clark 39944fc36cSRob Clark static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, 40871d812aSRob Clark const struct msm_mmu_funcs *funcs) 41871d812aSRob Clark { 42871d812aSRob Clark mmu->dev = dev; 43871d812aSRob Clark mmu->funcs = funcs; 44871d812aSRob Clark } 45871d812aSRob Clark 46944fc36cSRob Clark struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); 47944fc36cSRob Clark struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); 48871d812aSRob Clark 497f8036b7SRob Clark static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg, 507f8036b7SRob Clark int (*handler)(void *arg, unsigned long iova, int flags)) 517f8036b7SRob Clark { 527f8036b7SRob Clark mmu->arg = arg; 537f8036b7SRob Clark mmu->handler = handler; 547f8036b7SRob Clark } 557f8036b7SRob Clark 56871d812aSRob Clark #endif /* __MSM_MMU_H__ */ 57