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authorRobin Murphy <robin.murphy@arm.com>2017-03-16 20:00:19 +0300
committerJoerg Roedel <jroedel@suse.de>2017-03-22 18:18:59 +0300
commit273df9635385b2156851c7ee49f40658d7bcb29d (patch)
tree4185120550ff7cd9d08fd96cc5a06a3530690086 /include/linux/dma-iommu.h
parent7c1b058c8b5a310f2f0439aff14e454aa9afe502 (diff)
downloadlinux-273df9635385b2156851c7ee49f40658d7bcb29d.tar.xz
iommu/dma: Make PCI window reservation generic
Now that we're applying the IOMMU API reserved regions to our IOVA domains, we shouldn't need to privately special-case PCI windows, or indeed anything else which isn't specific to our iommu-dma layer. However, since those aren't IOMMU-specific either, rather than start duplicating code into IOMMU drivers let's transform the existing function into an iommu_get_resv_regions() helper that they can share. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/dma-iommu.h')
-rw-r--r--include/linux/dma-iommu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index 5725c94b1f12..b6635a46fc7c 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -71,6 +71,7 @@ int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
/* The DMA API isn't _quite_ the whole story, though... */
void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg);
+void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
#else
@@ -100,6 +101,10 @@ static inline void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg)
{
}
+static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
+{
+}
+
#endif /* CONFIG_IOMMU_DMA */
#endif /* __KERNEL__ */
#endif /* __DMA_IOMMU_H */