LXR linux/drivers/gpu/drm/msm/msm

   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
  23struct 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
  33struct msm_mmu {
  34        const struct msm_mmu_funcs *funcs;
  35        struct device *dev;
  36};
  37
  38static 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
  45struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
  46struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
  47
  48#endif /* __MSM_MMU_H__ */
  49