Re: [libvirt] [PATCHv2 17/17] qemu: support new pci controller model "pcie-switch-downstream-port"

This is backed by the qemu device xio3130-downstream. It can only be connected to a pcie-switch-upstream-port (x3130-upstream) on the upstream side. --- V2: * change test case to reflect additional pcie-root-port between pcie-root and pcie-switch-upstream-port and add a 2nd switch that is connected to a downstream port of the 1st switch. src/qemu/qemu_command.c | 42 ++++++++++++++++++++++ .../qemuxml2argv-pcie-switch-downstream-port.args | 18 ++++++++++ tests/qemuxml2argvtest.c | 9 +++++ 3 files changed, 69 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index e3f0663..155a94a 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1610,6 +1610,12 @@ qemuCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED, */ flags = VIR_PCI_CONNECT_TYPE_PCIE_PORT; break; + case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT: + /* pcie-switch-downstream-port can only connect to a + * pcie-switch-upstream-port, and can't be hot-plugged. + */ + flags = VIR_PCI_CONNECT_TYPE_PCIE_SWITCH; + break; default: break; } @@ -2292,6 +2298,13 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def, deviceName = "x3130-upstream"; break; case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT: + if (!options->type) + deviceName = "xio3130-downstream"; + if (options->chassis == -1) + options->chassis = cont->idx; + if (options->port == -1) + options->port = addr->slot; + break; case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT: case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT: case VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST: @@ -2416,6 +2429,10 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, */ flags = VIR_PCI_CONNECT_TYPE_PCIE_PORT; break; + case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT: + /* pcie-switch-port can only plug into pcie-switch */ + flags = VIR_PCI_CONNECT_TYPE_PCIE_SWITCH; + break; default: flags = VIR_PCI_CONNECT_HOTPLUGGABLE | VIR_PCI_CONNECT_TYPE_PCI; break; @@ -4766,6 +4783,31 @@ qemuBuildControllerDevStr(virDomainDefPtr domainDef, virBufferAsprintf(&buf, "%s,id=%s", def->opts.pciopts.type, def->info.alias); break; + case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT: + if (!def->opts.pciopts.type) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("autogenerated pcie-switch-downstream-port " + "options not set")); + goto error; + } + if (STREQ(def->opts.pciopts.type, "xio3130-downstream")) { + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("The pcie-switch-downstream-port " + "(xio3130-downstream) controller " + "is not supported in this QEMU binary")); + goto error; + } + } else { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("unknown pcie-switch-downstream-port device '%s'"),

+ def->opts.pciopts.type); + goto error; + } + virBufferAsprintf(&buf, "%s,port=0x%x,chassis=%d,id=%s", + def->opts.pciopts.type, def->opts.pciopts.port, + def->opts.pciopts.chassis, def->info.alias); + break; } break; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args new file mode 100644 index 0000000..fefefa2 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args @@ -0,0 +1,18 @@ +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \ +/usr/libexec/qemu-kvm -S -M q35 -m 2048 -smp 2 -nographic -nodefaults \ +-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \ +-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \ +-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \ +-device ioh3420,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \ +-device x3130-upstream,id=pci.4,bus=pci.3,addr=0x0 \ +-device xio3130-downstream,port=0x0,chassis=5,id=pci.5,bus=pci.4,addr=0x0 \ +-device xio3130-downstream,port=0x1,chassis=6,id=pci.6,bus=pci.4,addr=0x1 \ +-device xio3130-downstream,port=0x2,chassis=7,id=pci.7,bus=pci.4,addr=0x2 \ +-device xio3130-downstream,port=0x27,chassis=30,id=pci.8,bus=pci.4,addr=0x3 \ +-device x3130-upstream,id=pci.9,bus=pci.5,addr=0x0 \ +-device xio3130-downstream,port=0x4,chassis=10,id=pci.10,bus=pci.4,addr=0x4 \ +-device xio3130-downstream,port=0x5,chassis=11,id=pci.11,bus=pci.4,addr=0x5 \ +-device xio3130-downstream,port=0x6,chassis=12,id=pci.12,bus=pci.4,addr=0x6 \ +-drive file=/dev/HostVG/QEMUGuest1,if=none,id=drive-sata0-0-0 \ +-device ide-drive,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0 \ +-vga qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=33554432 diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index b42d483..287df6a 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1512,6 +1512,15 @@ mymain(void) QEMU_CAPS_DRIVE, QEMU_CAPS_ICH9_AHCI, QEMU_CAPS_VGA, QEMU_CAPS_DEVICE_VIDEO_PRIMARY, QEMU_CAPS_VGA, QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL); + DO_TEST("pcie-switch-downstream-port", + QEMU_CAPS_DEVICE, QEMU_CAPS_DEVICE_PCI_BRIDGE, + QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE, + QEMU_CAPS_DEVICE_IOH3420, + QEMU_CAPS_DEVICE_X3130_UPSTREAM, + QEMU_CAPS_DEVICE_XIO3130_DOWNSTREAM, + QEMU_CAPS_DRIVE, QEMU_CAPS_ICH9_AHCI, + QEMU_CAPS_VGA, QEMU_CAPS_DEVICE_VIDEO_PRIMARY, + QEMU_CAPS_VGA, QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL); DO_TEST("hostdev-scsi-lsi", QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_DRIVE,