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4a73abb965
This function can only be called on the default_domain. Trivally pass it in. In all three existing cases, the default domain was just attached to the device. This avoids iommu_setup_dma_ops() calling iommu_get_domain_for_dev() that will be used by external callers. Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Tested-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014-2015 ARM Ltd.
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*/
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#ifndef __DMA_IOMMU_H
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#define __DMA_IOMMU_H
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#include <linux/iommu.h>
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#ifdef CONFIG_IOMMU_DMA
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void iommu_setup_dma_ops(struct device *dev, struct iommu_domain *domain);
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int iommu_get_dma_cookie(struct iommu_domain *domain);
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void iommu_put_dma_cookie(struct iommu_domain *domain);
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void iommu_put_msi_cookie(struct iommu_domain *domain);
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int iommu_dma_init_fq(struct iommu_domain *domain);
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void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
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int iommu_dma_sw_msi(struct iommu_domain *domain, struct msi_desc *desc,
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phys_addr_t msi_addr);
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extern bool iommu_dma_forcedac;
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#else /* CONFIG_IOMMU_DMA */
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static inline void iommu_setup_dma_ops(struct device *dev,
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struct iommu_domain *domain)
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{
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}
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static inline int iommu_dma_init_fq(struct iommu_domain *domain)
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{
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return -EINVAL;
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}
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static inline int iommu_get_dma_cookie(struct iommu_domain *domain)
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{
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return -ENODEV;
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}
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static inline void iommu_put_dma_cookie(struct iommu_domain *domain)
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{
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}
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static inline void iommu_put_msi_cookie(struct iommu_domain *domain)
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{
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}
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static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
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{
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}
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static inline int iommu_dma_sw_msi(struct iommu_domain *domain,
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struct msi_desc *desc, phys_addr_t msi_addr)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_IOMMU_DMA */
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#endif /* __DMA_IOMMU_H */
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