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authorJoerg Roedel <joro@8bytes.org>2013-02-04 14:00:01 +0100
committerJoerg Roedel <joro@8bytes.org>2013-02-06 10:47:28 +0100
commit693567125bde1966a095267a9d8ca1b8d40f59ee (patch)
tree0ab1b5b9fea365c2d3d0b16388652c5041ce438d /include/linux/iommu.h
parentd7787d579cbef9f8079104759a2259fc916c688c (diff)
downloadop-kernel-dev-693567125bde1966a095267a9d8ca1b8d40f59ee.zip
op-kernel-dev-693567125bde1966a095267a9d8ca1b8d40f59ee.tar.gz
iommu: Add DOMAIN_ATTR_WINDOWS domain attribute
This attribute can be used to set and get the number of subwindows on IOMMUs that are window-based. Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'include/linux/iommu.h')
-rw-r--r--include/linux/iommu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 5ea3d72..ba3b8a9 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -60,6 +60,7 @@ struct iommu_domain {
enum iommu_attr {
DOMAIN_ATTR_GEOMETRY,
DOMAIN_ATTR_PAGING,
+ DOMAIN_ATTR_WINDOWS,
DOMAIN_ATTR_MAX,
};
@@ -106,6 +107,10 @@ struct iommu_ops {
int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size);
void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
+ /* Set the numer of window per domain */
+ int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count);
+ /* Get the numer of window per domain */
+ u32 (*domain_get_windows)(struct iommu_domain *domain);
unsigned long pgsize_bitmap;
};
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