1 /* 2 * Copyright (C) 2013 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __MSM_MMU_H__ 19 #define __MSM_MMU_H__ 20 21 #include <linux/iommu.h> 22 23 struct msm_mmu_funcs { 24 int (*attach)(struct msm_mmu *mmu, const char **names, int cnt); 25 void (*detach)(struct msm_mmu *mmu, const char **names, int cnt); 26 int (*map)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt, 27 unsigned len, int prot); 28 int (*unmap)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt, 29 unsigned len); 30 void (*destroy)(struct msm_mmu *mmu); 31 }; 32 33 struct msm_mmu { 34 const struct msm_mmu_funcs *funcs; 35 struct device *dev; 36 }; 37 38 static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, 39 const struct msm_mmu_funcs *funcs) 40 { 41 mmu->dev = dev; 42 mmu->funcs = funcs; 43 } 44 45 struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); 46 struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); 47 48 #endif /* __MSM_MMU_H__ */ 49