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/* 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 (*set_stall)(struct msm_mmu *mmu, bool enable);
};
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, unsigned long quirks);
struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks);
struct msm_mmu *msm_iommu_disp_new(struct device *dev, unsigned long quirks);
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);
int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
int *asid);
int msm_iommu_pagetable_walk(struct msm_mmu *mmu, unsigned long iova, uint64_t ptes[4]);
struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu);
#endif /* __MSM_MMU_H__ */
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