1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 26c5402b6f7c..97c36b2ee611 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -150,6 +150,24 @@ struct dma_pte {
                 (p).val |= ((addr) & VTD_PAGE_MASK); } while (0)
 #define dma_pte_present(p) (((p).val & 3) != 0)
 
+struct dmar_domain {
+        int     id;                     /* domain id */
+        struct intel_iommu *iommu;      /* back pointer to owning iommu */
+
+        struct list_head devices;       /* all devices' list */
+        struct iova_domain iovad;       /* iova's that belong to this domain */
+
+        struct dma_pte  *pgd;           /* virtual address */
+        spinlock_t      mapping_lock;   /* page table lock */
+        int             gaw;            /* max guest address width */
+
+        /* adjusted guest address width, 0 is level 2 30-bit */
+        int             agaw;
+
+#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
+        int             flags;
+};
+
 static void flush_unmaps_timeout(unsigned long data);
 
 DEFINE_TIMER(unmap_timer,  flush_unmaps_timeout, 0, 0);