1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#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, 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;
}
void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
dma_addr_t *tran_error);
#endif /* __MSM_MMU_H__ */
|
