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,
--
2.1.0
--
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