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| author | Robin Murphy <robin.murphy@arm.com> | 2022-08-16 18:28:05 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-09-09 09:26:22 +0200 |
| commit | f2042ed21da7f8886c93efefff61f93e6d57e9bd (patch) | |
| tree | ae6e9f236e9b7e1cb00758ac46c35c9b1324f7bd /drivers/iommu/dma-iommu.h | |
| parent | fa49364cd5e65797014688cba623541083b3e5b0 (diff) | |
| download | linux-f2042ed21da7f8886c93efefff61f93e6d57e9bd.tar.gz linux-f2042ed21da7f8886c93efefff61f93e6d57e9bd.tar.bz2 linux-f2042ed21da7f8886c93efefff61f93e6d57e9bd.zip | |
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>
Diffstat (limited to 'drivers/iommu/dma-iommu.h')
| -rw-r--r-- | drivers/iommu/dma-iommu.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/iommu/dma-iommu.h b/drivers/iommu/dma-iommu.h new file mode 100644 index 000000000000..942790009292 --- /dev/null +++ b/drivers/iommu/dma-iommu.h @@ -0,0 +1,42 @@ +/* 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 */ |