diff --git a/xen/common/Makefile b/xen/common/Makefile
index 0fed30b..b58de63 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -60,6 +60,7 @@ obj-y += vm_event.o
 obj-y += vmap.o
 obj-y += vsprintf.o
 obj-y += wait.o
+obj-y += viommu.o
 obj-bin-y += warning.init.o
 obj-$(CONFIG_XENOPROF) += xenoprof.o
 obj-y += xmalloc_tlsf.o
diff --git a/xen/common/domain.c b/xen/common/domain.c
index 4492c9c..aafc740 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -398,6 +398,9 @@ struct domain *domain_create(domid_t domid, unsigned int domcr_flags,
         spin_unlock(&domlist_update_lock);
     }
 
+    if ( (err = viommu_init_domain(d)) != 0)
+        goto fail;
+
     return d;
 
  fail:
diff --git a/xen/common/viommu.c b/xen/common/viommu.c
new file mode 100644
index 0000000..4c1c788
--- /dev/null
+++ b/xen/common/viommu.c
@@ -0,0 +1,97 @@
+/*
+ * common/viommu.c
+ * 
+ * Copyright (c) 2017 Intel Corporation
+ * Author: Lan Tianyu <tianyu.lan@intel.com> 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <xen/types.h>
+#include <xen/sched.h>
+
+int viommu_init_domain(struct domain *d)
+{
+    d->viommu.nr_viommu = 0;
+    d->viommu.ops = viommu_get_ops();
+
+    return 0;
+}
+
+int viommu_create(struct domain *d, u64 base_address, u64 length, u64 caps)
+{
+    struct viommu_info *info = &d->viommu;
+    struct viommu *viommu;
+    int rc;
+
+    if ( !info || !info->ops || !info->ops->create
+	        || info->nr_viommu >= NR_VIOMMU_PER_DOMAIN )
+        return -EINVAL;
+
+    viommu = xzalloc(struct viommu);
+    if ( !viommu )
+        return -EFAULT;
+
+    viommu->base_address = base_address;
+    viommu->length = length;
+    viommu->caps = caps;
+    viommu->viommu_id = info->nr_viommu;
+
+    info->viommu[info->nr_viommu] = viommu;
+    info->nr_viommu++;
+
+    rc = info->ops->create(d, viommu);
+    if ( rc < 0 ) {
+        xfree(viommu);
+        return rc;
+    }
+
+    return viommu->viommu_id;
+}
+
+int viommu_destroy(struct domain *d, u32 viommu_id)
+{
+    struct viommu_info *info = &d->viommu;
+
+    if ( !info || !info->ops || !info->ops->destroy)
+        return -EINVAL;
+
+    if ( viommu_id > info->nr_viommu || !info->viommu[viommu_id] )
+        return -EINVAL;
+
+    if ( info->ops->destroy(info->viommu[viommu_id]) )
+        return -EFAULT;
+
+    info->viommu[viommu_id] = NULL;
+    return 0;
+}
+
+u64 viommu_query_caps(struct domain *d)
+{
+    struct viommu_info *info = &d->viommu;
+
+    if ( !info || !info->ops || !info->ops->query_caps)
+        return -EINVAL;
+
+    return info->ops->query_caps(d);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ */
diff --git a/xen/include/asm-arm/viommu.h b/xen/include/asm-arm/viommu.h
new file mode 100644
index 0000000..ef6a60b
--- /dev/null
+++ b/xen/include/asm-arm/viommu.h
@@ -0,0 +1,30 @@
+/*
+ * include/asm-arm/viommu.h
+ *
+ * Copyright (c) 2017 Intel Corporation
+ * Author: Lan Tianyu <tianyu.lan@intel.com> 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#ifndef __ARCH_ARM_VIOMMU_H__
+#define __ARCH_ARM_VIOMMU_H__
+
+#include <xen/viommu.h>
+
+static inline const struct viommu_ops *viommu_get_ops(void)
+{
+    return NULL;
+}
+
+#endif /* __ARCH_ARM_VIOMMU_H__ */
diff --git a/xen/include/asm-x86/viommu.h b/xen/include/asm-x86/viommu.h
new file mode 100644
index 0000000..efb435f
--- /dev/null
+++ b/xen/include/asm-x86/viommu.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-arm/viommu.h
+ *
+ * Copyright (c) 2017 Intel Corporation.
+ * Author: Lan Tianyu <tianyu.lan@intel.com> 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#ifndef __ARCH_X86_VIOMMU_H__
+#define __ARCH_X86_VIOMMU_H__
+
+#include <xen/viommu.h>
+#include <asm/types.h>
+
+static inline const struct viommu_ops *viommu_get_ops(void)
+{
+    return NULL;
+}
+
+#endif /* __ARCH_X86_VIOMMU_H__ */
diff --git a/xen/include/public/viommu.h b/xen/include/public/viommu.h
new file mode 100644
index 0000000..ca2419b
--- /dev/null
+++ b/xen/include/public/viommu.h
@@ -0,0 +1,38 @@
+/*
+ * include/public/viommu.h
+ *
+ * Copyright (c) 2017 Intel Corporation
+ * Author: Lan Tianyu <tianyu.lan@intel.com> 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __XEN_PUBLIC_VIOMMU_H__
+#define __XEN_PUBLIC_VIOMMU_H__
+
+/* VIOMMU capabilities*/
+#define VIOMMU_CAP_IRQ_REMAPPING  (1 << 0)
+
+#endif /* __XEN_PUBLIC_VIOMMU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
+
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 0929c0b..a2e9cdc 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -21,6 +21,7 @@
 #include <xen/perfc.h>
 #include <asm/atomic.h>
 #include <xen/wait.h>
+#include <xen/viommu.h>
 #include <public/xen.h>
 #include <public/domctl.h>
 #include <public/sysctl.h>
@@ -481,6 +482,7 @@ struct domain
     /* vNUMA topology accesses are protected by rwlock. */
     rwlock_t vnuma_rwlock;
     struct vnuma_info *vnuma;
+    struct viommu_info viommu;
 
     /* Common monitor options */
     struct {
diff --git a/xen/include/xen/viommu.h b/xen/include/xen/viommu.h
new file mode 100644
index 0000000..a0abbdf
--- /dev/null
+++ b/xen/include/xen/viommu.h
@@ -0,0 +1,62 @@
+/*
+ * include/xen/viommu.h
+ *
+ * Copyright (c) 2017, Intel Corporation
+ * Author: Lan Tianyu <tianyu.lan@intel.com> 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#ifndef __XEN_VIOMMU_H__
+#define __XEN_VIOMMU_H__
+
+#include <asm/viommu.h>
+
+#define NR_VIOMMU_PER_DOMAIN 1
+
+struct viommu {
+    u64 base_address;
+    u64 length;
+    u64 caps;
+    u32 viommu_id;
+    void *priv;
+};
+
+struct viommu_ops {
+    u64 (*query_caps)(struct domain *d);
+    int (*create)(struct domain *d, struct viommu *viommu);
+    int (*destroy)(struct viommu *viommu);
+};
+
+struct viommu_info {
+    u32 nr_viommu;
+    struct viommu *viommu[NR_VIOMMU_PER_DOMAIN]; /* viommu array*/
+    const struct viommu_ops *ops;     /* viommu_ops */
+};
+
+int viommu_init_domain(struct domain *d);
+int viommu_create(struct domain *d, u64 base_address, u64 length, u64 caps);
+int viommu_destroy(struct domain *d, u32 viommu_id);
+u64 viommu_query_caps(struct domain *d);
+
+#endif /* __XEN_VIOMMU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
