mirror of
https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
cf4bf8bf54
The io-pgtable layer should be responsible for 1) Reading/modifying the pagetable 2) Performing cpu cache maintenance on the pagetable Remove code which does this from the DMA layer, and re-add it in the io-pgtable layer, if duplicate functionality does not already exist. Change-Id: I2250c0f574b933f524ff464f6539ea6db1699729 Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* Copyright (c) 2016-2018, 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_iommu_mapping;
|
|
struct io_pgtable_ops;
|
|
|
|
struct dma_fast_smmu_mapping {
|
|
struct device *dev;
|
|
struct iommu_domain *domain;
|
|
dma_addr_t base;
|
|
size_t size;
|
|
size_t num_4k_pages;
|
|
|
|
u32 min_iova_align;
|
|
struct page *guard_page;
|
|
|
|
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;
|
|
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_release_mapping(struct kref *kref);
|
|
#else
|
|
static inline int fast_smmu_init_mapping(struct device *dev,
|
|
struct dma_iommu_mapping *mapping)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void fast_smmu_release_mapping(struct kref *kref)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LINUX_DMA_MAPPING_FAST_H */
|