2015-10-08 15:03:09 -07:00
|
|
|
/* 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>
|
|
|
|
|
|
2016-09-19 18:25:00 -07:00
|
|
|
struct dma_iommu_mapping;
|
|
|
|
|
|
2015-10-08 15:03:09 -07:00
|
|
|
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;
|
2015-12-21 15:06:34 -08:00
|
|
|
struct notifier_block notifier;
|
2016-06-07 11:09:44 -07:00
|
|
|
|
|
|
|
|
int is_smmu_pt_coherent;
|
2015-10-08 15:03:09 -07:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#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 */
|
