intel-iommu: Add for_each_iommu() and for_each_active_iommu() macros

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 2f3427468956..0b4aa8069985 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -44,6 +44,14 @@ extern struct list_head dmar_drhd_units;
 #define for_each_drhd_unit(drhd) \
         list_for_each_entry(drhd, &dmar_drhd_units, list)
 
+#define for_each_active_iommu(i, drhd)                                  \
+        list_for_each_entry(drhd, &dmar_drhd_units, list)               \
+                if (i=drhd->iommu, drhd->ignored) {} else
+
+#define for_each_iommu(i, drhd)                                         \
+        list_for_each_entry(drhd, &dmar_drhd_units, list)               \
+                if (i=drhd->iommu, 0) {} else 
+
 extern int dmar_table_init(void);
 extern int dmar_dev_scope_init(void);