1#!/usr/bin/env python3 2# 3# SPDX-License-Identifier: GPL-2.0-or-later 4# 5# SMMUv3 Functional tests 6# 7# Copyright (c) 2021 Red Hat, Inc. 8# 9# Author: 10# Eric Auger <eric.auger@redhat.com> 11# 12# This work is licensed under the terms of the GNU GPL, version 2 or 13# later. See the COPYING file in the top-level directory. 14 15import os 16import time 17 18from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern 19from qemu_test import BUILD_DIR 20from qemu.utils import kvm_available 21 22 23class SMMU(LinuxKernelTest): 24 25 default_kernel_params = ('earlyprintk=pl011,0x9000000 no_timer_check ' 26 'printk.time=1 rd_NO_PLYMOUTH net.ifnames=0 ' 27 'console=ttyAMA0 rd.rescue') 28 IOMMU_ADDON = ',iommu_platform=on,disable-modern=off,disable-legacy=on' 29 kernel_path = None 30 initrd_path = None 31 kernel_params = None 32 33 GUEST_PORT = 8080 34 35 def set_up_boot(self, path): 36 self.vm.add_args('-device', 'virtio-blk-pci,bus=pcie.0,' + 37 'drive=drv0,id=virtio-disk0,bootindex=1,' 38 'werror=stop,rerror=stop' + self.IOMMU_ADDON) 39 self.vm.add_args('-drive', 40 f'file={path},if=none,cache=writethrough,id=drv0,snapshot=on') 41 42 self.vm.add_args('-netdev', 43 'user,id=n1,hostfwd=tcp:127.0.0.1:0-:%d' % 44 self.GUEST_PORT) 45 self.vm.add_args('-device', 'virtio-net,netdev=n1' + self.IOMMU_ADDON) 46 47 def common_vm_setup(self, kernel, initrd, disk): 48 self.require_accelerator("kvm") 49 self.require_netdev('user') 50 self.set_machine("virt") 51 self.vm.add_args('-m', '1G') 52 self.vm.add_args("-accel", "kvm") 53 self.vm.add_args("-cpu", "host") 54 self.vm.add_args("-machine", "iommu=smmuv3") 55 self.vm.add_args("-d", "guest_errors") 56 self.vm.add_args('-bios', os.path.join(BUILD_DIR, 'pc-bios', 57 'edk2-aarch64-code.fd')) 58 self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0') 59 self.vm.add_args('-object', 60 'rng-random,id=rng0,filename=/dev/urandom') 61 62 self.kernel_path = kernel.fetch() 63 self.initrd_path = initrd.fetch() 64 self.set_up_boot(disk.fetch()) 65 66 def run_and_check(self, filename, hashsum): 67 self.vm.add_args('-initrd', self.initrd_path) 68 self.vm.add_args('-append', self.kernel_params) 69 self.launch_kernel(self.kernel_path, initrd=self.initrd_path, 70 wait_for='attach it to a bug report.') 71 prompt = '# ' 72 # Fedora 33 requires 'return' to be pressed to enter the shell. 73 # There seems to be a small race between detecting the previous ':' 74 # and sending the newline, so we need to add a small delay here. 75 self.wait_for_console_pattern(':') 76 time.sleep(0.2) 77 exec_command_and_wait_for_pattern(self, '\n', prompt) 78 exec_command_and_wait_for_pattern(self, 'cat /proc/cmdline', 79 self.kernel_params) 80 81 # Checking for SMMU enablement: 82 self.log.info("Checking whether SMMU has been enabled...") 83 exec_command_and_wait_for_pattern(self, 'dmesg | grep smmu', 84 'arm-smmu-v3') 85 self.wait_for_console_pattern(prompt) 86 exec_command_and_wait_for_pattern(self, 87 'find /sys/kernel/iommu_groups/ -type l', 88 'devices/0000:00:') 89 self.wait_for_console_pattern(prompt) 90 91 # Copy a file (checked later), umount afterwards to drop disk cache: 92 self.log.info("Checking hard disk...") 93 exec_command_and_wait_for_pattern(self, 94 "while ! (dmesg -c | grep vda:) ; do sleep 1 ; done", 95 "vda2") 96 exec_command_and_wait_for_pattern(self, 'mount /dev/vda2 /sysroot', 97 'mounted filesystem') 98 exec_command_and_wait_for_pattern(self, 'cp /bin/vi /sysroot/root/vi', 99 prompt) 100 exec_command_and_wait_for_pattern(self, 'umount /sysroot', prompt) 101 # Switch from initrd to the cloud image filesystem: 102 exec_command_and_wait_for_pattern(self, 'mount /dev/vda2 /sysroot', 103 prompt) 104 exec_command_and_wait_for_pattern(self, 105 ('for d in dev proc sys run ; do ' 106 'mount -o bind /$d /sysroot/$d ; done'), prompt) 107 exec_command_and_wait_for_pattern(self, 'chroot /sysroot', prompt) 108 # Check files on the hard disk: 109 exec_command_and_wait_for_pattern(self, 110 ('if diff -q /root/vi /usr/bin/vi ; then echo "file" "ok" ; ' 111 'else echo "files differ"; fi'), 'file ok') 112 self.wait_for_console_pattern(prompt) 113 exec_command_and_wait_for_pattern(self, f'sha256sum {filename}', 114 hashsum) 115 116 # Check virtio-net via HTTP: 117 exec_command_and_wait_for_pattern(self, 'dhclient eth0', prompt) 118 self.check_http_download(filename, hashsum, self.GUEST_PORT) 119 120 121 # 5.3 kernel without RIL # 122 123 ASSET_KERNEL_F31 = Asset( 124 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/' 125 'releases/31/Server/aarch64/os/images/pxeboot/vmlinuz'), 126 '3ae07fcafbfc8e4abeb693035a74fe10698faae15e9ccd48882a9167800c1527') 127 128 ASSET_INITRD_F31 = Asset( 129 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/' 130 'releases/31/Server/aarch64/os/images/pxeboot/initrd.img'), 131 '9f3146b28bc531c689f3c5f114cb74e4bd7bd548e0ba19fa77921d8bd256755a') 132 133 ASSET_DISK_F31 = Asset( 134 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' 135 '/31/Cloud/aarch64/images/Fedora-Cloud-Base-31-1.9.aarch64.qcow2'), 136 '1e18d9c0cf734940c4b5d5ec592facaed2af0ad0329383d5639c997fdf16fe49') 137 138 F31_FILENAME = '/boot/initramfs-5.3.7-301.fc31.aarch64.img' 139 F31_HSUM = '1a4beec6607d94df73d9dd1b4985c9c23dd0fdcf4e6ca1351d477f190df7bef9' 140 141 def test_smmu_noril(self): 142 self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31, 143 self.ASSET_DISK_F31) 144 self.kernel_params = self.default_kernel_params 145 self.run_and_check(self.F31_FILENAME, self.F31_HSUM) 146 147 def test_smmu_noril_passthrough(self): 148 self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31, 149 self.ASSET_DISK_F31) 150 self.kernel_params = (self.default_kernel_params + 151 ' iommu.passthrough=on') 152 self.run_and_check(self.F31_FILENAME, self.F31_HSUM) 153 154 def test_smmu_noril_nostrict(self): 155 self.common_vm_setup(self.ASSET_KERNEL_F31, self.ASSET_INITRD_F31, 156 self.ASSET_DISK_F31) 157 self.kernel_params = (self.default_kernel_params + 158 ' iommu.strict=0') 159 self.run_and_check(self.F31_FILENAME, self.F31_HSUM) 160 161 162 # 5.8 kernel featuring range invalidation 163 # >= v5.7 kernel 164 165 ASSET_KERNEL_F33 = Asset( 166 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/' 167 'releases/33/Server/aarch64/os/images/pxeboot/vmlinuz'), 168 'd8b1e6f7241f339d8e7609c456cf0461ffa4583ed07e0b55c7d1d8a0c154aa89') 169 170 ASSET_INITRD_F33 = Asset( 171 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/' 172 'releases/33/Server/aarch64/os/images/pxeboot/initrd.img'), 173 '92513f55295c2c16a777f7b6c35ccd70a438e9e1e40b6ba39e0e60900615b3df') 174 175 ASSET_DISK_F33 = Asset( 176 ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' 177 '/33/Cloud/aarch64/images/Fedora-Cloud-Base-33-1.2.aarch64.qcow2'), 178 'e7f75cdfd523fe5ac2ca9eeece68edc1a81f386a17f969c1d1c7c87031008a6b') 179 180 F33_FILENAME = '/boot/initramfs-5.8.15-301.fc33.aarch64.img' 181 F33_HSUM = '079cfad0caa82e84c8ca1fb0897a4999dd769f262216099f518619e807a550d9' 182 183 def test_smmu_ril(self): 184 self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33, 185 self.ASSET_DISK_F33) 186 self.kernel_params = self.default_kernel_params 187 self.run_and_check(self.F33_FILENAME, self.F33_HSUM) 188 189 def test_smmu_ril_passthrough(self): 190 self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33, 191 self.ASSET_DISK_F33) 192 self.kernel_params = (self.default_kernel_params + 193 ' iommu.passthrough=on') 194 self.run_and_check(self.F33_FILENAME, self.F33_HSUM) 195 196 def test_smmu_ril_nostrict(self): 197 self.common_vm_setup(self.ASSET_KERNEL_F33, self.ASSET_INITRD_F33, 198 self.ASSET_DISK_F33) 199 self.kernel_params = (self.default_kernel_params + 200 ' iommu.strict=0') 201 self.run_and_check(self.F33_FILENAME, self.F33_HSUM) 202 203 204if __name__ == '__main__': 205 LinuxKernelTest.main() 206