tests/acceptance: add a test for devices on s390x

This adds a very basic test for checking that we present devices
in a way that Linux can consume: boot with both virtio-net-ccw and
virtio-net-pci attached and then verify that Linux is able to see
and detect these devices.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20201126130158.1471985-1-cohuck@redhat.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/tests/acceptance/machine_s390_ccw_virtio.py b/tests/acceptance/machine_s390_ccw_virtio.py
new file mode 100644
index 0000000..db6352c
--- /dev/null
+++ b/tests/acceptance/machine_s390_ccw_virtio.py
@@ -0,0 +1,68 @@
+# Functional test that boots an s390x Linux guest with ccw and PCI devices
+# attached and checks whether the devices are recognized by Linux
+#
+# Copyright (c) 2020 Red Hat, Inc.
+#
+# Author:
+#  Cornelia Huck <cohuck@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later.  See the COPYING file in the top-level directory.
+
+
+from avocado_qemu import Test
+from avocado_qemu import exec_command_and_wait_for_pattern
+from avocado_qemu import wait_for_console_pattern
+
+class S390CCWVirtioMachine(Test):
+    KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
+
+    def wait_for_console_pattern(self, success_message, vm=None):
+        wait_for_console_pattern(self, success_message,
+                                 failure_message='Kernel panic - not syncing',
+                                 vm=vm)
+
+    timeout = 120
+
+    def test_s390x_devices(self):
+
+        """
+        :avocado: tags=arch:s390x
+        :avocado: tags=machine:s390-ccw-virtio
+        """
+
+        kernel_url = ('https://snapshot.debian.org/archive/debian/'
+                      '20201126T092837Z/dists/buster/main/installer-s390x/'
+                      '20190702+deb10u6/images/generic/kernel.debian')
+        kernel_hash = '5821fbee57d6220a067a8b967d24595621aa1eb6'
+        kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
+
+        initrd_url = ('https://snapshot.debian.org/archive/debian/'
+                      '20201126T092837Z/dists/buster/main/installer-s390x/'
+                      '20190702+deb10u6/images/generic/initrd.debian')
+        initrd_hash = '81ba09c97bef46e8f4660ac25b4ac0a5be3a94d6'
+        initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
+
+        self.vm.set_console()
+        kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
+                              'console=sclp0 root=/dev/ram0 BOOT_DEBUG=3')
+        self.vm.add_args('-nographic',
+                         '-kernel', kernel_path,
+                         '-initrd', initrd_path,
+                         '-append', kernel_command_line,
+                         '-device', 'virtio-net-ccw,devno=fe.1.1111',
+                         '-device', 'zpci,uid=5,target=zzz',
+                         '-device', 'virtio-net-pci,id=zzz')
+        self.vm.launch()
+
+        shell_ready = "sh: can't access tty; job control turned off"
+        self.wait_for_console_pattern(shell_ready)
+        # first debug shell is too early, we need to wait for device detection
+        exec_command_and_wait_for_pattern(self, 'exit', shell_ready)
+
+        ccw_bus_id="0.1.1111"
+        pci_bus_id="0005:00:00.0"
+        exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
+                                          ccw_bus_id)
+        exec_command_and_wait_for_pattern(self, 'ls /sys/bus/pci/devices/',
+                                          pci_bus_id)