58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
|
/*
|
||
|
|
* 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 * const *names, int cnt);
|
||
|
|
void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt);
|
||
|
|
int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
|
||
|
|
unsigned len, int prot);
|
||
|
|
int (*unmap)(struct msm_mmu *mmu, uint64_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;
|
||
|
|
int (*handler)(void *arg, unsigned long iova, int flags);
|
||
|
|
void *arg;
|
||
|
|
};
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
|
||
|
|
int (*handler)(void *arg, unsigned long iova, int flags))
|
||
|
|
{
|
||
|
|
mmu->arg = arg;
|
||
|
|
mmu->handler = handler;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __MSM_MMU_H__ */
|