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# 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 '
timeout = 120
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)
def wait_for_crw_reports(self):
exec_command_and_wait_for_pattern(self,
'while ! (dmesg -c | grep CRW) ; do sleep 1 ; done',
'CRW reports')
dmesg_clear_count = 1
def clear_guest_dmesg(self):
exec_command_and_wait_for_pattern(self, 'dmesg -c > /dev/null; '
'echo dm_clear\ ' + str(self.dmesg_clear_count),
'dm_clear ' + str(self.dmesg_clear_count))
self.dmesg_clear_count += 1
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',
'virtio-rng-ccw,devno=fe.2.0000,max_revision=0,id=rn1',
'-device',
'virtio-rng-ccw,devno=fe.3.1234,max_revision=2,id=rn2',
'-device', 'zpci,uid=5,target=zzz',
'-device', 'virtio-net-pci,id=zzz',
'-device', 'zpci,uid=0xa,fid=12,target=serial',
'-device', 'virtio-serial-pci,id=serial',
'-device', 'virtio-balloon-ccw')
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_ids="0.1.1111 0.2.0000 0.3.1234"
pci_bus_ids="0005:00:00.0 000a:00:00.0"
exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
ccw_bus_ids)
exec_command_and_wait_for_pattern(self, 'ls /sys/bus/pci/devices/',
pci_bus_ids)
# check that the device at 0.2.0000 is in legacy mode, while the
# device at 0.3.1234 has the virtio-1 feature bit set
virtio_rng_features="00000000000000000000000000001100" + \
"10000000000000000000000000000000"
virtio_rng_features_legacy="00000000000000000000000000001100" + \
"00000000000000000000000000000000"
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.2.0000/virtio?/features',
virtio_rng_features_legacy)
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.3.1234/virtio?/features',
virtio_rng_features)
# check that /dev/hwrng works - and that it's gone after ejecting
exec_command_and_wait_for_pattern(self,
'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
'10+0 records out')
self.clear_guest_dmesg()
self.vm.command('device_del', id='rn1')
self.wait_for_crw_reports()
self.clear_guest_dmesg()
self.vm.command('device_del', id='rn2')
self.wait_for_crw_reports()
exec_command_and_wait_for_pattern(self,
'dd if=/dev/hwrng of=/dev/null bs=1k count=10',
'dd: /dev/hwrng: No such device')
# verify that we indeed have virtio-net devices (without having the
# virtio-net driver handy)
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/ccw/devices/0.1.1111/cutype',
'3832/01')
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_vendor',
'0x1af4')
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/pci/devices/0005\:00\:00.0/subsystem_device',
'0x0001')
# check fid propagation
exec_command_and_wait_for_pattern(self,
'cat /sys/bus/pci/devices/000a\:00\:00.0/function_id',
'0x0000000c')
# add another device
self.clear_guest_dmesg()
self.vm.command('device_add', driver='virtio-net-ccw',
devno='fe.0.4711', id='net_4711')
self.wait_for_crw_reports()
exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/',
'0.0.4711')
# and detach it again
self.clear_guest_dmesg()
self.vm.command('device_del', id='net_4711')
self.vm.event_wait(name='DEVICE_DELETED',
match={'data': {'device': 'net_4711'}})
self.wait_for_crw_reports()
exec_command_and_wait_for_pattern(self,
'ls /sys/bus/ccw/devices/0.0.4711',
'No such file or directory')
# test the virtio-balloon device
exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
'MemTotal: 115640 kB')
self.vm.command('human-monitor-command', command_line='balloon 96')
exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
'MemTotal: 82872 kB')
self.vm.command('human-monitor-command', command_line='balloon 128')
exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
'MemTotal: 115640 kB')
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