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/* Copyright (c) 2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __LINUX_DMA_MAPPING_FAST_H
#define __LINUX_DMA_MAPPING_FAST_H
#include <linux/iommu.h>
#include <linux/io-pgtable-fast.h>
struct dma_fast_smmu_mapping {
struct device *dev;
struct iommu_domain *domain;
dma_addr_t base;
size_t size;
size_t num_4k_pages;
unsigned int bitmap_size;
unsigned long *bitmap;
unsigned long next_start;
unsigned long upcoming_stale_bit;
bool have_stale_tlbs;
dma_addr_t pgtbl_dma_handle;
av8l_fast_iopte *pgtbl_pmds;
spinlock_t lock;
struct notifier_block notifier;
};
#ifdef CONFIG_IOMMU_IO_PGTABLE_FAST
int fast_smmu_attach_device(struct device *dev,
struct dma_iommu_mapping *mapping);
void fast_smmu_detach_device(struct device *dev,
struct dma_iommu_mapping *mapping);
#else
static inline int fast_smmu_attach_device(struct device *dev,
struct dma_iommu_mapping *mapping)
{
return -ENODEV;
}
static inline void fast_smmu_detach_device(struct device *dev,
struct dma_iommu_mapping *mapping)
{
}
#endif
#endif /* __LINUX_DMA_MAPPING_FAST_H */
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