linux/drivers/iommu/dma-iommu.h
Robin Murphy f2042ed21d iommu/dma: Make header private
Now that dma-iommu.h only contains internal interfaces, make it
private to the IOMMU subsytem.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/b237e06c56a101f77af142a54b629b27aa179d22.1660668998.git.robin.murphy@arm.com
[ joro : re-add stub for iommu_dma_get_resv_regions ]
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-09-09 09:26:22 +02:00

43 lines
892 B
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2014-2015 ARM Ltd.
*/
#ifndef __DMA_IOMMU_H
#define __DMA_IOMMU_H
#include <linux/iommu.h>
#ifdef CONFIG_IOMMU_DMA
int iommu_get_dma_cookie(struct iommu_domain *domain);
void iommu_put_dma_cookie(struct iommu_domain *domain);
int iommu_dma_init_fq(struct iommu_domain *domain);
void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
extern bool iommu_dma_forcedac;
#else /* CONFIG_IOMMU_DMA */
static inline int iommu_dma_init_fq(struct iommu_domain *domain)
{
return -EINVAL;
}
static inline int iommu_get_dma_cookie(struct iommu_domain *domain)
{
return -ENODEV;
}
static inline void iommu_put_dma_cookie(struct iommu_domain *domain)
{
}
static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
{
}
#endif /* CONFIG_IOMMU_DMA */
#endif /* __DMA_IOMMU_H */