Add test case for TPM passthrough

Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: NCorey Bryant <coreyb@linux.vnet.ibm.com>
Tested-by: NCorey Bryant <coreyb@linux.vnet.ibm.com>

tests/qemuxml2argvdata/qemuxml2argv-tpm-passthrough.args

+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test \
+/usr/bin/qemu -S -M pc-0.12 -m 2048 -smp 1 -nographic -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -boot c -usb \
+-tpmdev passthrough,id=tpm-tpm0,path=/dev/tpm0,cancel-path=/sys/class/misc/tpm0/device/cancel \
+-device tpm-tis,tpmdev=tpm-tpm0,id=tpm0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

tests/qemuxml2argvdata/qemuxml2argv-tpm-passthrough.xml

+<domain type='qemu'>
+  <name>TPM-VM</name>
+  <uuid>11d7cd22-da89-3094-6212-079a48a309a1</uuid>
+  <memory unit='KiB'>2097152</memory>
+  <currentMemory unit='KiB'>512288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-0.12'>hvm</type>
+    <boot dev='hd'/>
+    <bootmenu enable='yes'/>
+  </os>
+  <features>
+    <acpi/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <controller type='usb' index='0'/>
+    <tpm model='tpm-tis'>
+      <backend type='passthrough'>
+        <device path='/dev/tpm0'/>
+      </backend>
+    </tpm>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -937,6 +937,9 @@ mymain(void)
 
     DO_TEST("ppc-dtb", QEMU_CAPS_KVM, QEMU_CAPS_DTB);
 
+    DO_TEST("tpm-passthrough", QEMU_CAPS_DEVICE,
+            QEMU_CAPS_DEVICE_TPM_PASSTHROUGH, QEMU_CAPS_DEVICE_TPM_TIS);
+
     virObjectUnref(driver.config);
     virObjectUnref(driver.caps);
     virObjectUnref(driver.xmlopt);

tests/qemuxml2xmltest.c

@@ -274,6 +274,8 @@ mymain(void)
 
     DO_TEST_DIFFERENT("metadata");
 
+    DO_TEST("tpm-passthrough");
+
     virObjectUnref(driver.caps);
     virObjectUnref(driver.xmlopt);