1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162 |
- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2013 Red Hat
- * Author: Rob Clark <[email protected]>
- */
- #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__ */
|