0e7647aa8a
This patch adds the "qemu" namespace package to the $build/tests/venv directory. It does so in "editable" mode, which means that changes to the source python directory will actively be reflected by the venv. This patch also then removes any sys.path hacking from the avocado test scripts directly. By doing this, the environment of where to find these packages is managed entirely by the virtual environment and not by the scripts themselves. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20220526000921.1581503-7-jsnow@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
175 lines
6.5 KiB
Python
175 lines
6.5 KiB
Python
"""
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Check compatibility of virtio device types
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"""
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# Copyright (c) 2018 Red Hat, Inc.
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#
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# Author:
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# Eduardo Habkost <ehabkost@redhat.com>
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or
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# later. See the COPYING file in the top-level directory.
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import sys
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import os
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from qemu.machine import QEMUMachine
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from avocado_qemu import QemuSystemTest
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# Virtio Device IDs:
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VIRTIO_NET = 1
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VIRTIO_BLOCK = 2
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VIRTIO_CONSOLE = 3
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VIRTIO_RNG = 4
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VIRTIO_BALLOON = 5
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VIRTIO_RPMSG = 7
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VIRTIO_SCSI = 8
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VIRTIO_9P = 9
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VIRTIO_RPROC_SERIAL = 11
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VIRTIO_CAIF = 12
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VIRTIO_GPU = 16
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VIRTIO_INPUT = 18
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VIRTIO_VSOCK = 19
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VIRTIO_CRYPTO = 20
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PCI_VENDOR_ID_REDHAT_QUMRANET = 0x1af4
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# Device IDs for legacy/transitional devices:
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PCI_LEGACY_DEVICE_IDS = {
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VIRTIO_NET: 0x1000,
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VIRTIO_BLOCK: 0x1001,
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VIRTIO_BALLOON: 0x1002,
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VIRTIO_CONSOLE: 0x1003,
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VIRTIO_SCSI: 0x1004,
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VIRTIO_RNG: 0x1005,
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VIRTIO_9P: 0x1009,
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VIRTIO_VSOCK: 0x1012,
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}
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def pci_modern_device_id(virtio_devid):
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return virtio_devid + 0x1040
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def devtype_implements(vm, devtype, implements):
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return devtype in [d['name'] for d in vm.command('qom-list-types', implements=implements)]
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def get_pci_interfaces(vm, devtype):
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interfaces = ('pci-express-device', 'conventional-pci-device')
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return [i for i in interfaces if devtype_implements(vm, devtype, i)]
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class VirtioVersionCheck(QemuSystemTest):
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"""
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Check if virtio-version-specific device types result in the
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same device tree created by `disable-modern` and
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`disable-legacy`.
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:avocado: tags=arch:x86_64
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"""
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# just in case there are failures, show larger diff:
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maxDiff = 4096
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def run_device(self, devtype, opts=None, machine='pc'):
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"""
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Run QEMU with `-device DEVTYPE`, return device info from `query-pci`
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"""
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with QEMUMachine(self.qemu_bin) as vm:
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vm.set_machine(machine)
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if opts:
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devtype += ',' + opts
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vm.add_args('-device', '%s,id=devfortest' % (devtype))
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vm.add_args('-S')
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vm.launch()
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pcibuses = vm.command('query-pci')
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alldevs = [dev for bus in pcibuses for dev in bus['devices']]
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devfortest = [dev for dev in alldevs
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if dev['qdev_id'] == 'devfortest']
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return devfortest[0], get_pci_interfaces(vm, devtype)
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def assert_devids(self, dev, devid, non_transitional=False):
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self.assertEqual(dev['id']['vendor'], PCI_VENDOR_ID_REDHAT_QUMRANET)
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self.assertEqual(dev['id']['device'], devid)
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if non_transitional:
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self.assertTrue(0x1040 <= dev['id']['device'] <= 0x107f)
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self.assertGreaterEqual(dev['id']['subsystem'], 0x40)
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def check_all_variants(self, qemu_devtype, virtio_devid):
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"""Check if a virtio device type and its variants behave as expected"""
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# Force modern mode:
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dev_modern, _ = self.run_device(qemu_devtype,
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'disable-modern=off,disable-legacy=on')
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self.assert_devids(dev_modern, pci_modern_device_id(virtio_devid),
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non_transitional=True)
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# <prefix>-non-transitional device types should be 100% equivalent to
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# <prefix>,disable-modern=off,disable-legacy=on
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dev_1_0, nt_ifaces = self.run_device('%s-non-transitional' % (qemu_devtype))
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self.assertEqual(dev_modern, dev_1_0)
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# Force transitional mode:
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dev_trans, _ = self.run_device(qemu_devtype,
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'disable-modern=off,disable-legacy=off')
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self.assert_devids(dev_trans, PCI_LEGACY_DEVICE_IDS[virtio_devid])
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# Force legacy mode:
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dev_legacy, _ = self.run_device(qemu_devtype,
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'disable-modern=on,disable-legacy=off')
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self.assert_devids(dev_legacy, PCI_LEGACY_DEVICE_IDS[virtio_devid])
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# No options: default to transitional on PC machine-type:
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no_opts_pc, generic_ifaces = self.run_device(qemu_devtype)
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self.assertEqual(dev_trans, no_opts_pc)
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#TODO: check if plugging on a PCI Express bus will make the
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# device non-transitional
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#no_opts_q35 = self.run_device(qemu_devtype, machine='q35')
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#self.assertEqual(dev_modern, no_opts_q35)
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# <prefix>-transitional device types should be 100% equivalent to
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# <prefix>,disable-modern=off,disable-legacy=off
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dev_trans, trans_ifaces = self.run_device('%s-transitional' % (qemu_devtype))
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self.assertEqual(dev_trans, dev_trans)
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# ensure the interface information is correct:
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self.assertIn('conventional-pci-device', generic_ifaces)
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self.assertIn('pci-express-device', generic_ifaces)
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self.assertIn('conventional-pci-device', nt_ifaces)
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self.assertIn('pci-express-device', nt_ifaces)
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self.assertIn('conventional-pci-device', trans_ifaces)
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self.assertNotIn('pci-express-device', trans_ifaces)
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def test_conventional_devs(self):
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self.check_all_variants('virtio-net-pci', VIRTIO_NET)
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# virtio-blk requires 'driver' parameter
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#self.check_all_variants('virtio-blk-pci', VIRTIO_BLOCK)
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self.check_all_variants('virtio-serial-pci', VIRTIO_CONSOLE)
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self.check_all_variants('virtio-rng-pci', VIRTIO_RNG)
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self.check_all_variants('virtio-balloon-pci', VIRTIO_BALLOON)
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self.check_all_variants('virtio-scsi-pci', VIRTIO_SCSI)
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# virtio-9p requires 'fsdev' parameter
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#self.check_all_variants('virtio-9p-pci', VIRTIO_9P)
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def check_modern_only(self, qemu_devtype, virtio_devid):
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"""Check if a modern-only virtio device type behaves as expected"""
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# Force modern mode:
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dev_modern, _ = self.run_device(qemu_devtype,
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'disable-modern=off,disable-legacy=on')
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self.assert_devids(dev_modern, pci_modern_device_id(virtio_devid),
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non_transitional=True)
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# No options: should be modern anyway
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dev_no_opts, ifaces = self.run_device(qemu_devtype)
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self.assertEqual(dev_modern, dev_no_opts)
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self.assertIn('conventional-pci-device', ifaces)
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self.assertIn('pci-express-device', ifaces)
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def test_modern_only_devs(self):
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self.check_modern_only('virtio-vga', VIRTIO_GPU)
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self.check_modern_only('virtio-gpu-pci', VIRTIO_GPU)
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self.check_modern_only('virtio-mouse-pci', VIRTIO_INPUT)
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self.check_modern_only('virtio-tablet-pci', VIRTIO_INPUT)
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self.check_modern_only('virtio-keyboard-pci', VIRTIO_INPUT)
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