diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 2c284eb5f3..43d11af0a7 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -291,6 +291,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "gpex-pcihost",
               "ioh3420",
               "x3130-upstream",
+              "xio3130-downstream",
     );
 
 
@@ -1574,6 +1575,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "gpex-pcihost", QEMU_CAPS_OBJECT_GPEX},
     { "ioh3420", QEMU_CAPS_DEVICE_IOH3420 },
     { "x3130-upstream", QEMU_CAPS_DEVICE_X3130_UPSTREAM },
+    { "xio3130-downstream", QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM },
 };
 
 static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 300b1887c3..2d32d6efb8 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -234,6 +234,7 @@ typedef enum {
     QEMU_CAPS_OBJECT_GPEX        = 192, /* have generic PCI host controller */
     QEMU_CAPS_DEVICE_IOH3420     = 193, /* -device ioh3420 */
     QEMU_CAPS_DEVICE_X3130_UPSTREAM = 194, /* -device x3130-upstream */
+    QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM = 195, /* -device xio3130-downstream */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 } virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_1.2.2-1.caps b/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
index 78d7b82f60..ba166354b4 100644
--- a/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.2.2-1.caps
@@ -122,4 +122,5 @@
     <flag name='qxl-vga.vgamem_mb'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.3.1-1.caps b/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
index 7cec7f9e7a..51cd6d9b3e 100644
--- a/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.3.1-1.caps
@@ -137,4 +137,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.4.2-1.caps b/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
index f5f00347c5..03d0a3ebb0 100644
--- a/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.4.2-1.caps
@@ -138,4 +138,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.5.3-1.caps b/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
index 9f0461adbf..e2f22e4bb2 100644
--- a/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.5.3-1.caps
@@ -147,4 +147,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.6.0-1.caps b/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
index 1b23b82ef5..874a0508d3 100644
--- a/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.6.0-1.caps
@@ -153,4 +153,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_1.6.50-1.caps b/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
index ff0427fbb9..dd3bcda08a 100644
--- a/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
+++ b/tests/qemucapabilitiesdata/caps_1.6.50-1.caps
@@ -153,4 +153,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_2.1.1-1.caps b/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
index 56b27e5c6c..3ee2d6f71b 100644
--- a/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
+++ b/tests/qemucapabilitiesdata/caps_2.1.1-1.caps
@@ -169,4 +169,5 @@
     <flag name='pci-serial'/>
     <flag name='ioh3420'/>
     <flag name='x3130-upstream'/>
+    <flag name='xio3130-downstream'/>
   </qemuCaps>
diff --git a/tests/qemuhelptest.c b/tests/qemuhelptest.c
index 62b9a0cb56..8f317d4cc3 100644
--- a/tests/qemuhelptest.c
+++ b/tests/qemuhelptest.c
@@ -755,7 +755,8 @@ mymain(void)
             QEMU_CAPS_SPLASH_TIMEOUT,
             QEMU_CAPS_DEVICE_IVSHMEM,
             QEMU_CAPS_DEVICE_IOH3420,
-            QEMU_CAPS_DEVICE_X3130_UPSTREAM);
+            QEMU_CAPS_DEVICE_X3130_UPSTREAM,
+            QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM);
     DO_TEST("qemu-1.1.0", 1001000, 0, 0,
             QEMU_CAPS_VNC_COLON,
             QEMU_CAPS_NO_REBOOT,
@@ -857,7 +858,8 @@ mymain(void)
             QEMU_CAPS_SPLASH_TIMEOUT,
             QEMU_CAPS_DEVICE_IVSHMEM,
             QEMU_CAPS_DEVICE_IOH3420,
-            QEMU_CAPS_DEVICE_X3130_UPSTREAM);
+            QEMU_CAPS_DEVICE_X3130_UPSTREAM,
+            QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM);
     DO_TEST_FULL("qemu-1.2.0", 1002000, 0, 0, VIR_ERR_CONFIG_UNSUPPORTED,
             QEMU_CAPS_LAST);
     DO_TEST_FULL("qemu-kvm-1.2.0", 1002000, 1, 0, VIR_ERR_CONFIG_UNSUPPORTED,