xref: /openbmc/qemu/tests/avocado/intel_iommu.py (revision 3185e5a6) 
1# INTEL_IOMMU Functional tests
2#
3# Copyright (c) 2021 Red Hat, Inc.
4#
5# Author:
6#  Eric Auger <eric.auger@redhat.com>
7#
8# This work is licensed under the terms of the GNU GPL, version 2 or
9# later.  See the COPYING file in the top-level directory.
10import os
11
12from avocado import skipUnless
13from avocado_qemu.linuxtest import LinuxTest
14
15@skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
16class IntelIOMMU(LinuxTest):
17    """
18    :avocado: tags=arch:x86_64
19    :avocado: tags=distro:fedora
20    :avocado: tags=distro_version:31
21    :avocado: tags=machine:q35
22    :avocado: tags=accel:kvm
23    :avocado: tags=intel_iommu
24    :avocado: tags=flaky
25    """
26
27    IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on'
28    kernel_path = None
29    initrd_path = None
30    kernel_params = None
31
32    def set_up_boot(self):
33        path = self.download_boot()
34        self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,' +
35                         'drive=drv0,id=virtio-disk0,bootindex=1,'
36                         'werror=stop,rerror=stop' + self.IOMMU_ADDON)
37        self.vm.add_args('-device', 'virtio-gpu-pci' + self.IOMMU_ADDON)
38        self.vm.add_args('-drive',
39                         'file=%s,if=none,cache=writethrough,id=drv0' % path)
40
41    def setUp(self):
42        super(IntelIOMMU, self).setUp(None, 'virtio-net-pci' + self.IOMMU_ADDON)
43
44    def add_common_args(self):
45        self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
46        self.vm.add_args('-object',
47                         'rng-random,id=rng0,filename=/dev/urandom')
48
49    def common_vm_setup(self, custom_kernel=None):
50        self.require_accelerator("kvm")
51        self.add_common_args()
52        self.vm.add_args("-accel", "kvm")
53
54        if custom_kernel is None:
55            return
56
57        kernel_url = self.distro.pxeboot_url + 'vmlinuz'
58        kernel_hash = '5b6f6876e1b5bda314f93893271da0d5777b1f3c'
59        initrd_url = self.distro.pxeboot_url + 'initrd.img'
60        initrd_hash = 'dd0340a1b39bd28f88532babd4581c67649ec5b1'
61        self.kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
62        self.initrd_path = self.fetch_asset(initrd_url, asset_hash=initrd_hash)
63
64    def run_and_check(self):
65        if self.kernel_path:
66            self.vm.add_args('-kernel', self.kernel_path,
67                             '-append', self.kernel_params,
68                             '-initrd', self.initrd_path)
69        self.launch_and_wait()
70        self.ssh_command('cat /proc/cmdline')
71        self.ssh_command('dmesg | grep -e DMAR -e IOMMU')
72        self.ssh_command('find /sys/kernel/iommu_groups/ -type l')
73        self.ssh_command('dnf -y install numactl-devel')
74
75    def test_intel_iommu(self):
76        """
77        :avocado: tags=intel_iommu_intremap
78        """
79
80        self.common_vm_setup(True)
81        self.vm.add_args('-device', 'intel-iommu,intremap=on')
82        self.vm.add_args('-machine', 'kernel_irqchip=split')
83
84        self.kernel_params = (self.distro.default_kernel_params +
85                              ' quiet intel_iommu=on')
86        self.run_and_check()
87
88    def test_intel_iommu_strict(self):
89        """
90        :avocado: tags=intel_iommu_strict
91        """
92
93        self.common_vm_setup(True)
94        self.vm.add_args('-device', 'intel-iommu,intremap=on')
95        self.vm.add_args('-machine', 'kernel_irqchip=split')
96        self.kernel_params = (self.distro.default_kernel_params +
97                              ' quiet intel_iommu=on,strict')
98        self.run_and_check()
99
100    def test_intel_iommu_strict_cm(self):
101        """
102        :avocado: tags=intel_iommu_strict_cm
103        """
104
105        self.common_vm_setup(True)
106        self.vm.add_args('-device', 'intel-iommu,intremap=on,caching-mode=on')
107        self.vm.add_args('-machine', 'kernel_irqchip=split')
108        self.kernel_params = (self.distro.default_kernel_params +
109                              ' quiet intel_iommu=on,strict')
110        self.run_and_check()
111
112    def test_intel_iommu_pt(self):
113        """
114        :avocado: tags=intel_iommu_pt
115        """
116
117        self.common_vm_setup(True)
118        self.vm.add_args('-device', 'intel-iommu,intremap=on')
119        self.vm.add_args('-machine', 'kernel_irqchip=split')
120        self.kernel_params = (self.distro.default_kernel_params +
121                              ' quiet intel_iommu=on iommu=pt')
122        self.run_and_check()
123