tests/acceptance/machine_s390_ccw_virtio.py

   1 # Functional test that boots an s390x Linux guest with ccw and PCI devices
   2 # attached and checks whether the devices are recognized by Linux
   3 #
   4 # Copyright (c) 2020 Red Hat, Inc.
   5 #
   6 # Author:
   7 #  Cornelia Huck <cohuck@redhat.com>
   8 #
   9 # This work is licensed under the terms of the GNU GPL, version 2 or
  10 # later.  See the COPYING file in the top-level directory.
  11
  12
  13 from avocado_qemu import Test
  14 from avocado_qemu import exec_command_and_wait_for_pattern
  15 from avocado_qemu import wait_for_console_pattern
  16
  17 class S390CCWVirtioMachine(Test):
  18     KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
  19
  20     timeout = 120
  21
  22     def wait_for_console_pattern(self, success_message, vm=None):
  23         wait_for_console_pattern(self, success_message,
  24                                  failure_message='Kernel panic - not syncing',
  25                                  vm=vm)
  26
  27     def wait_for_crw_reports(self):
  28         exec_command_and_wait_for_pattern(self,
  29                         'while ! (dmesg -c | grep CRW) ; do sleep 1 ; done',
  30                         'CRW reports')
  31
  32     dmesg_clear_count = 1
  33     def clear_guest_dmesg(self):
  34         exec_command_and_wait_for_pattern(self, 'dmesg -c > /dev/null; '
  35                     'echo dm_clear\ ' + str(self.dmesg_clear_count),
  36                     'dm_clear ' + str(self.dmesg_clear_count))
  37         self.dmesg_clear_count += 1
  38
  39     def test_s390x_devices(self):
  40
  41         """
  42         :avocado: tags=arch:s390x
  43         :avocado: tags=machine:s390-ccw-virtio
  44         """
  45
  46         kernel_url = ('https://snapshot.debian.org/archive/debian/'
  47                       '20201126T092837Z/dists/buster/main/installer-s390x/'
  48                       '20190702+deb10u6/images/generic/kernel.debian')
  49         kernel_hash = '5821fbee57d6220a067a8b967d24595621aa1eb6'
  50         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  51
  52         initrd_url = ('https://snapshot.debian.org/archive/debian/'
  53                       '20201126T092837Z/dists/buster/main/installer-s390x/'
  54                       '20190702+deb10u6/images/generic/initrd.debian')
  55         initrd_hash = '81ba09c97bef46e8f4660ac25b4ac0a5be3a94d6'
  56         initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
  57
  58         self.vm.set_console()
  59         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
  60                               'console=sclp0 root=/dev/ram0 BOOT_DEBUG=3')
  61         self.vm.add_args('-nographic',
  62                          '-kernel', kernel_path,
  63                          '-initrd', initrd_path,
  64                          '-append', kernel_command_line,
  65                          '-device', 'virtio-net-ccw,devno=fe.1.1111',
  66                          '-device',
  67                          'virtio-rng-ccw,devno=fe.2.0000,max_revision=0,id=rn1',
  68                          '-device',
  69                          'virtio-rng-ccw,devno=fe.3.1234,max_revision=2,id=rn2',
  70                          '-device', 'zpci,uid=5,target=zzz',
  71                          '-device', 'virtio-net-pci,id=zzz',
  72                          '-device', 'zpci,uid=0xa,fid=12,target=serial',
  73                          '-device', 'virtio-serial-pci,id=serial')
  74         self.vm.launch()
  75
  76         shell_ready = "sh: can't access tty; job control turned off"
  77         self.wait_for_console_pattern(shell_ready)
  78         # first debug shell is too early, we need to wait for device detection
  79         exec_command_and_wait_for_pattern(self, 'exit', shell_ready)
  80
  81         ccw_bus_ids="0.1.1111  0.2.0000  0.3.1234"
  82         pci_bus_ids="0005:00:00.0  000a:00:00.0"
  83         exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
  84                                           ccw_bus_ids)
  85         exec_command_and_wait_for_pattern(self, 'ls /sys/bus/pci/devices/',
  86                                           pci_bus_ids)
  87         # check that the device at 0.2.0000 is in legacy mode, while the
  88         # device at 0.3.1234 has the virtio-1 feature bit set
  89         virtio_rng_features="00000000000000000000000000001100" + \
  90                             "10000000000000000000000000000000"
  91         virtio_rng_features_legacy="00000000000000000000000000001100" + \
  92                                    "00000000000000000000000000000000"
  93         exec_command_and_wait_for_pattern(self,
  94                         'cat /sys/bus/ccw/devices/0.2.0000/virtio?/features',
  95                         virtio_rng_features_legacy)
  96         exec_command_and_wait_for_pattern(self,
  97                         'cat /sys/bus/ccw/devices/0.3.1234/virtio?/features',
  98                         virtio_rng_features)
  99         # check that /dev/hwrng works - and that it's gone after ejecting
 100         exec_command_and_wait_for_pattern(self,
 101                         'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
 102                         '10+0 records out')
 103         self.clear_guest_dmesg()
 104         self.vm.command('device_del', id='rn1')
 105         self.wait_for_crw_reports()
 106         self.clear_guest_dmesg()
 107         self.vm.command('device_del', id='rn2')
 108         self.wait_for_crw_reports()
 109         exec_command_and_wait_for_pattern(self,
 110                         'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
 111                         'dd: /dev/hwrng: No such device')
 112         # verify that we indeed have virtio-net devices (without having the
 113         # virtio-net driver handy)
 114         exec_command_and_wait_for_pattern(self,
 115                                     'cat /sys/bus/ccw/devices/0.1.1111/cutype',
 116                                     '3832/01')
 117         exec_command_and_wait_for_pattern(self,
 118                     'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_vendor',
 119                     '0x1af4')
 120         exec_command_and_wait_for_pattern(self,
 121                     'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_device',
 122                     '0x0001')
 123         # check fid propagation
 124         exec_command_and_wait_for_pattern(self,
 125                         'cat /sys/bus/pci/devices/000a\:00\:00.0/function_id',
 126                         '0x0000000c')
 127         # add another device
 128         self.clear_guest_dmesg()
 129         self.vm.command('device_add', driver='virtio-net-ccw',
 130                         devno='fe.0.4711', id='net_4711')
 131         self.wait_for_crw_reports()
 132         exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
 133                                           '0.0.4711')
 134         # and detach it again
 135         self.clear_guest_dmesg()
 136         self.vm.command('device_del', id='net_4711')
 137         self.vm.event_wait(name='DEVICE_DELETED',
 138                            match={'data': {'device': 'net_4711'}})
 139         self.wait_for_crw_reports()
 140         exec_command_and_wait_for_pattern(self,
 141                                           'ls /sys/bus/ccw/devices/0.0.4711',
 142                                           'No such file or directory')