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kernel/linux-rt-4.4.41/drivers/gpu/drm/msm/msm_mmu.h 1.5 KB
5113f6f70   김현기   kernel add
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  /*
   * Copyright (C) 2013 Red Hat
   * Author: Rob Clark <robdclark@gmail.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published by
   * the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  #ifndef __MSM_MMU_H__
  #define __MSM_MMU_H__
  
  #include <linux/iommu.h>
  
  struct msm_mmu_funcs {
  	int (*attach)(struct msm_mmu *mmu, const char **names, int cnt);
  	void (*detach)(struct msm_mmu *mmu, const char **names, int cnt);
  	int (*map)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,
  			unsigned len, int prot);
  	int (*unmap)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,
  			unsigned len);
  	void (*destroy)(struct msm_mmu *mmu);
  };
  
  struct msm_mmu {
  	const struct msm_mmu_funcs *funcs;
  	struct device *dev;
  };
  
  static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
  		const struct msm_mmu_funcs *funcs)
  {
  	mmu->dev = dev;
  	mmu->funcs = funcs;
  }
  
  struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
  struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
  
  #endif /* __MSM_MMU_H__ */