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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
*/
#ifndef __LINUX_DMA_MAPPING_FAST_H
#define __LINUX_DMA_MAPPING_FAST_H
#include <linux/iommu.h>
#include <linux/io-pgtable-fast.h>
struct dma_iommu_mapping;
struct io_pgtable_ops;
struct iova_domain;
struct dma_fast_smmu_mapping {
struct device *dev;
struct iommu_domain *domain;
struct iova_domain *iovad;
dma_addr_t base;
size_t size;
size_t num_4k_pages;
unsigned int bitmap_size;
/* bitmap has 1s marked only valid mappings */
unsigned long *bitmap;
unsigned long next_start;
#ifndef __GENKSYMS__
/* clean_bitmap has 1s marked for both valid and stale tlb mappings */
unsigned long *clean_bitmap;
#else
unsigned long upcoming_stale_bit;
#endif
bool have_stale_tlbs;
dma_addr_t pgtbl_dma_handle;
struct io_pgtable_ops *pgtbl_ops;
spinlock_t lock;
struct notifier_block notifier;
};
#ifdef CONFIG_IOMMU_IO_PGTABLE_FAST
int fast_smmu_init_mapping(struct device *dev,
struct dma_iommu_mapping *mapping);
void fast_smmu_put_dma_cookie(struct iommu_domain *domain);
#else
static inline int fast_smmu_init_mapping(struct device *dev,
struct dma_iommu_mapping *mapping)
{
return -ENODEV;
}
static inline void fast_smmu_put_dma_cookie(struct iommu_domain *domain) {}
#endif
#endif /* __LINUX_DMA_MAPPING_FAST_H */
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