63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
|
/* 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 {
|
||
|
|
void (*detach)(struct msm_mmu *mmu);
|
||
|
|
int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
|
||
|
|
size_t len, int prot);
|
||
|
|
int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len);
|
||
|
|
void (*destroy)(struct msm_mmu *mmu);
|
||
|
|
void (*resume_translation)(struct msm_mmu *mmu);
|
||
|
|
};
|
||
|
|
|
||
|
|
enum msm_mmu_type {
|
||
|
|
MSM_MMU_GPUMMU,
|
||
|
|
MSM_MMU_IOMMU,
|
||
|
|
MSM_MMU_IOMMU_PAGETABLE,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct msm_mmu {
|
||
|
|
const struct msm_mmu_funcs *funcs;
|
||
|
|
struct device *dev;
|
||
|
|
int (*handler)(void *arg, unsigned long iova, int flags, void *data);
|
||
|
|
void *arg;
|
||
|
|
enum msm_mmu_type type;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
|
||
|
|
const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
|
||
|
|
{
|
||
|
|
mmu->dev = dev;
|
||
|
|
mmu->funcs = funcs;
|
||
|
|
mmu->type = type;
|
||
|
|
}
|
||
|
|
|
||
|
|
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, void *data))
|
||
|
|
{
|
||
|
|
mmu->arg = arg;
|
||
|
|
mmu->handler = handler;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
|
||
|
|
|
||
|
|
void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
|
||
|
|
dma_addr_t *tran_error);
|
||
|
|
|
||
|
|
|
||
|
|
int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
|
||
|
|
int *asid);
|
||
|
|
|
||
|
|
#endif /* __MSM_MMU_H__ */
|