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#!/usr/bin/env python3
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# SMMUv3 Functional tests
#
# Copyright (c) 2021 Red Hat, Inc.
#
# Author:
# Eric Auger <eric.auger@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.
import os
import time
from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
from qemu_test import BUILD_DIR
from qemu.utils import kvm_available, hvf_available
class SMMU(LinuxKernelTest):
default_kernel_params = ('earlyprintk=pl011,0x9000000 no_timer_check '
'printk.time=1 rd_NO_PLYMOUTH net.ifnames=0 '
'console=ttyAMA0 rd.rescue')
IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on'
kernel_path = None
initrd_path = None
kernel_params = None
GUEST_PORT = 8080
def set_up_boot(self, path):
self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,' +
'drive=drv0,id=virtio-disk0,bootindex=1,'
'werror=stop,rerror=stop' + self.IOMMU_ADDON)
self.vm.add_args('-drive',
f'file={path},if=none,cache=writethrough,id=drv0,snapshot=on')
self.vm.add_args('-netdev',
'user,id=n1,hostfwd=tcp:127.0.0.1:0-:%d' %
self.GUEST_PORT)
self.vm.add_args('-device', 'virtio-net,netdev=n1' + self.IOMMU_ADDON)
def common_vm_setup(self, kernel, initrd, disk):
if hvf_available(self.qemu_bin):
accel = "hvf"
elif kvm_available(self.qemu_bin):
accel = "kvm"
else:
self.skipTest("Neither HVF nor KVM accelerator is available")
self.require_accelerator(accel)
self.require_netdev('user')
self.set_machine("virt")
self.vm.add_args('-m', '1G')
self.vm.add_args("-accel", accel)
self.vm.add_args("-cpu", "host")
self.vm.add_args("-machine", "iommu=smmuv3")
self.vm.add_args("-d", "guest_errors")
self.vm.add_args('-bios', os.path.join(BUILD_DIR, 'pc-bios',
'edk2-aarch64-code.fd'))
self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
self.vm.add_args('-object',
'rng-random,id=rng0,filename=/dev/urandom')
self.kernel_path = kernel.fetch()
self.initrd_path = initrd.fetch()
self.set_up_boot(disk.fetch())
def run_and_check(self, filename, hashsum):
self.vm.add_args('-initrd', self.initrd_path)
self.vm.add_args('-append', self.kernel_params)
self.launch_kernel(self.kernel_path, initrd=self.initrd_path,
wait_for='attach it to a bug report.')
prompt = '# '
# Fedora 33 requires 'return' to be pressed to enter the shell.
# There seems to be a small race between detecting the previous ':'
# and sending the newline, so we need to add a small delay here.
self.wait_for_console_pattern(':')
time.sleep(0.2)
exec_command_and_wait_for_pattern(self, '\n', prompt)
exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline',
self.kernel_params)
# Checking for SMMU enablement:
self.log.info("Checking whether SMMU has been enabled...")
exec_command_and_wait_for_pattern(self, 'dmesg | grep smmu',
'arm-smmu-v3')
self.wait_for_console_pattern(prompt)
exec_command_and_wait_for_pattern(self,
'find /sys/kernel/iommu_groups/ -type l',
'devices/0000:00:')
self.wait_for_console_pattern(prompt)
# Copy a file (checked later), umount afterwards to drop disk cache:
self.log.info("Checking hard disk...")
exec_command_and_wait_for_pattern(self,
"while ! (dmesg -c | grep vda:) ; do sleep 1 ; done",
"vda2")
exec_command_and_wait_for_pattern(self, 'mount /dev/vda2 /sysroot',
'mounted filesystem')
exec_command_and_wait_for_pattern(self, 'cp /bin/vi /sysroot/root/vi',
prompt)
exec_command_and_wait_for_pattern(self, 'umount /sysroot', prompt)
# Switch from initrd to the cloud image filesystem:
exec_command_and_wait_for_pattern(self, 'mount /dev/vda2 /sysroot',
prompt)
exec_command_and_wait_for_pattern(self,
('for d in dev proc sys run ; do '
'mount -o bind /$d /sysroot/$d ; done'), prompt)
exec_command_and_wait_for_pattern(self, 'chroot /sysroot', prompt)
# Check files on the hard disk:
exec_command_and_wait_for_pattern(self,
('if diff -q /root/vi /usr/bin/vi ; then echo "file" "ok" ; '
'else echo "files differ"; fi'), 'file ok')
self.wait_for_console_pattern(prompt)
exec_command_and_wait_for_pattern(self, f'sha256sum {filename}',
hashsum)
# Check virtio-net via HTTP:
exec_command_and_wait_for_pattern(self, 'dhclient eth0', prompt)
self.check_http_download(filename, hashsum, self.GUEST_PORT)
# 5.3 kernel without RIL #
ASSET_KERNEL_F31 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
'releases/31/Server/aarch64/os/images/pxeboot/vmlinuz'),
'3ae07fcafbfc8e4abeb693035a74fe10698faae15e9ccd48882a9167800c1527')
ASSET_INITRD_F31 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
'releases/31/Server/aarch64/os/images/pxeboot/initrd.img'),
'9f3146b28bc531c689f3c5f114cb74e4bd7bd548e0ba19fa77921d8bd256755a')
ASSET_DISK_F31 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases'
'/31/Cloud/aarch64/images/Fedora-Cloud-Base-31-1.9.aarch64.qcow2'),
'1e18d9c0cf734940c4b5d5ec592facaed2af0ad0329383d5639c997fdf16fe49')
F31_FILENAME = '/boot/initramfs-5.3.7-301.fc31.aarch64.img'
F31_HSUM = '1a4beec6607d94df73d9dd1b4985c9c23dd0fdcf4e6ca1351d477f190df7bef9'
def test_smmu_noril(self):
self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31,
self.ASSET_DISK_F31)
self.kernel_params = self.default_kernel_params
self.run_and_check(self.F31_FILENAME, self.F31_HSUM)
def test_smmu_noril_passthrough(self):
self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31,
self.ASSET_DISK_F31)
self.kernel_params = (self.default_kernel_params +
' iommu.passthrough=on')
self.run_and_check(self.F31_FILENAME, self.F31_HSUM)
def test_smmu_noril_nostrict(self):
self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31,
self.ASSET_DISK_F31)
self.kernel_params = (self.default_kernel_params +
' iommu.strict=0')
self.run_and_check(self.F31_FILENAME, self.F31_HSUM)
# 5.8 kernel featuring range invalidation
# >= v5.7 kernel
ASSET_KERNEL_F33 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
'releases/33/Server/aarch64/os/images/pxeboot/vmlinuz'),
'd8b1e6f7241f339d8e7609c456cf0461ffa4583ed07e0b55c7d1d8a0c154aa89')
ASSET_INITRD_F33 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
'releases/33/Server/aarch64/os/images/pxeboot/initrd.img'),
'92513f55295c2c16a777f7b6c35ccd70a438e9e1e40b6ba39e0e60900615b3df')
ASSET_DISK_F33 = Asset(
('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases'
'/33/Cloud/aarch64/images/Fedora-Cloud-Base-33-1.2.aarch64.qcow2'),
'e7f75cdfd523fe5ac2ca9eeece68edc1a81f386a17f969c1d1c7c87031008a6b')
F33_FILENAME = '/boot/initramfs-5.8.15-301.fc33.aarch64.img'
F33_HSUM = '079cfad0caa82e84c8ca1fb0897a4999dd769f262216099f518619e807a550d9'
def test_smmu_ril(self):
self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33,
self.ASSET_DISK_F33)
self.kernel_params = self.default_kernel_params
self.run_and_check(self.F33_FILENAME, self.F33_HSUM)
def test_smmu_ril_passthrough(self):
self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33,
self.ASSET_DISK_F33)
self.kernel_params = (self.default_kernel_params +
' iommu.passthrough=on')
self.run_and_check(self.F33_FILENAME, self.F33_HSUM)
def test_smmu_ril_nostrict(self):
self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33,
self.ASSET_DISK_F33)
self.kernel_params = (self.default_kernel_params +
' iommu.strict=0')
self.run_and_check(self.F33_FILENAME, self.F33_HSUM)
if __name__ == '__main__':
LinuxKernelTest.main()
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