1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7 #ifndef __MSM_MMU_H__
8 #define __MSM_MMU_H__
9
10 #include <linux/iommu.h>
11
12 struct msm_mmu_funcs {
13 int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt);
14 void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt);
15 int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
16 unsigned len, int prot);
17 int (*unmap)(struct msm_mmu *mmu, uint64_t iova, unsigned len);
18 void (*destroy)(struct msm_mmu *mmu);
19 };
20
21 struct msm_mmu {
22 const struct msm_mmu_funcs *funcs;
23 struct device *dev;
24 int (*handler)(void *arg, unsigned long iova, int flags);
25 void *arg;
26 };
27
msm_mmu_init(struct msm_mmu * mmu,struct device * dev,const struct msm_mmu_funcs * funcs)28 static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
29 const struct msm_mmu_funcs *funcs)
30 {
31 mmu->dev = dev;
32 mmu->funcs = funcs;
33 }
34
35 struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
36 struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
37
msm_mmu_set_fault_handler(struct msm_mmu * mmu,void * arg,int (* handler)(void * arg,unsigned long iova,int flags))38 static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
39 int (*handler)(void *arg, unsigned long iova, int flags))
40 {
41 mmu->arg = arg;
42 mmu->handler = handler;
43 }
44
45 void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
46 dma_addr_t *tran_error);
47
48 #endif /* __MSM_MMU_H__ */
49