[libvirt] [PATCH 09/13] conf: new pci controller model "pcie-switch-upstream-port"
Laine Stump
laine at laine.org
Mon Jun 22 18:44:14 UTC 2015
This controller can be connected to any PCIe port, but not to a
standard PCI port, which is the reason for the new connect type
VIR_PCI_CONNECT_TYPE_PCIE_ONLY. pcie-switch provides 31 ports (slot=1
to slot=31), which can only have pci controllers of model
"pcie-switch-downstream-port" plugged into them, which is the reason for the
other new connect type VIR_PCI_CONNECT_TYPE_PCIE_SWITCH.
---
docs/formatdomain.html.in | 5 ++--
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_addr.c | 11 +++++++-
src/conf/domain_addr.h | 6 +++-
src/conf/domain_conf.c | 3 +-
src/conf/domain_conf.h | 1 +
.../qemuxml2argv-pcie-switch-upstream-port.xml | 32 ++++++++++++++++++++++
tests/qemuxml2xmltest.c | 1 +
8 files changed, 55 insertions(+), 5 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index e6c140a..646c9ee 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2998,10 +2998,11 @@
PCI controllers have an optional <code>model</code> attribute with
possible values <code>pci-root</code>, <code>pcie-root</code>,
<code>pcie-root-port</code>, <code>pci-bridge</code>,
- or <code>dmi-to-pci-bridge</code>.
+ <code>dmi-to-pci-bridge</code>, or <code>pcie-switch-upstream-port</code>.
(pci-root and pci-bridge <span class="since">since 1.0.5</span>,
pcie-root and dmi-to-pci-bridge <span class="since">since
- 1.1.2</span>, pcie-root-port <span class="since">since 1.2.17</span>)
+ 1.1.2</span>, pcie-root-port and
+ pcie-switch-upstream-port <span class="since">since 1.2.17</span>)
The root controllers (<code>pci-root</code> and <code>pcie-root</code>)
have an optional <code>pcihole64</code> element specifying how big
(in kilobytes, or in the unit specified by <code>pcihole64</code>'s
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 6139dfb..3f74cfc 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1752,6 +1752,7 @@
<value>pci-bridge</value>
<value>dmi-to-pci-bridge</value>
<value>pcie-root-port</value>
+ <value>pcie-switch-upstream-port</value>
</choice>
</attribute>
</group>
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 4b5e81e..59da745 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -57,6 +57,9 @@ virDomainPCIAddressFlagsCompatible(virDevicePCIAddressPtr addr,
if (devFlags & VIR_PCI_CONNECT_HOTPLUGGABLE)
busFlags |= VIR_PCI_CONNECT_HOTPLUGGABLE;
}
+ /* devices with PCIE_ONLY can't connect to PCI, even if fromConfig */
+ if (devFlags & VIR_PCI_CONNECT_TYPE_PCIE_ONLY)
+ devFlags |= VIR_PCI_CONNECT_TYPE_PCIE;
/* If this bus doesn't allow the type of connection (PCI
* vs. PCIe) required by the device, or if the device requires
@@ -199,8 +202,14 @@ virDomainPCIAddressBusSetModel(virDomainPCIAddressBusPtr bus,
case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
/* provides one slot which is pcie and hotpluggable */
bus->flags = VIR_PCI_CONNECT_TYPE_PCIE | VIR_PCI_CONNECT_HOTPLUGGABLE;
+ bus->minSlot = 0;
+ bus->maxSlot = 0;
+ break;
+ case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT:
+ /* 31 slots, can only accept pcie-switch-port, no hotplug */
+ bus->flags = VIR_PCI_CONNECT_TYPE_PCIE_SWITCH;
bus->minSlot = 1;
- bus->maxSlot = 1;
+ bus->maxSlot = 31;
break;
default:
virReportError(VIR_ERR_INTERNAL_ERROR,
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 2a0ff96..8e9ca32 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -41,6 +41,10 @@ typedef enum {
/* PCI Express devices can connect to this bus */
VIR_PCI_CONNECT_TYPE_PCIE_ROOT = 1 << 4,
/* for devices that can only connect to pcie-root (i.e. root-port) */
+ VIR_PCI_CONNECT_TYPE_PCIE_ONLY = 1 << 5,
+ /* devices that can't connect to pci even if manual config */
+ VIR_PCI_CONNECT_TYPE_PCIE_SWITCH = 1 << 6,
+ /* devices that can only connect to a pcie-switch */
} virDomainPCIConnectFlags;
typedef struct {
@@ -73,7 +77,7 @@ typedef virDomainPCIAddressSet *virDomainPCIAddressSetPtr;
*/
# define VIR_PCI_CONNECT_TYPES_MASK \
(VIR_PCI_CONNECT_TYPE_PCI | VIR_PCI_CONNECT_TYPE_PCIE | \
- VIR_PCI_CONNECT_TYPE_PCIE_ROOT)
+ VIR_PCI_CONNECT_TYPE_PCIE_ROOT | VIR_PCI_CONNECT_TYPE_PCIE_SWITCH)
/* combination of all bits that could be used to connect a normal
* endpoint device (i.e. excluding the connection possible between an
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 0bdd51e..c0b8c92 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -324,7 +324,8 @@ VIR_ENUM_IMPL(virDomainControllerModelPCI, VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST,
"pcie-root",
"pci-bridge",
"dmi-to-pci-bridge",
- "pcie-root-port")
+ "pcie-root-port",
+ "pcie-switch-upstream-port")
VIR_ENUM_IMPL(virDomainControllerModelSCSI, VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LAST,
"auto",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 946210e..b7ce0ce 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -753,6 +753,7 @@ typedef enum {
VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE,
VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE,
VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT,
+ VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT,
VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST
} virDomainControllerModelPCI;
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.xml b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.xml
new file mode 100644
index 0000000..428a4ea
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+ <name>q35-test</name>
+ <uuid>11dbdcdd-4c3b-482b-8903-9bdb8c0a2774</uuid>
+ <memory unit='KiB'>2097152</memory>
+ <currentMemory unit='KiB'>2097152</currentMemory>
+ <vcpu placement='static' cpuset='0-1'>2</vcpu>
+ <os>
+ <type arch='x86_64' machine='q35'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/libexec/qemu-kvm</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='sda' bus='sata'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='pci' index='0' model='pcie-root'/>
+ <controller type='pci' index='1' model='dmi-to-pci-bridge'/>
+ <controller type='pci' index='2' model='pci-bridge'/>
+ <controller type='pci' index='3' model='pcie-switch-upstream-port'/>
+ <controller type='sata' index='0'/>
+ <video>
+ <model type='qxl' ram='65536' vram='32768' vgamem='8192' heads='1'/>
+ </video>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 2acbae1..e5fcc5d 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -567,6 +567,7 @@ mymain(void)
DO_TEST_DIFFERENT("pcie-root");
DO_TEST_DIFFERENT("q35");
DO_TEST("pcie-root-port");
+ DO_TEST("pcie-switch-upstream-port");
DO_TEST("hostdev-scsi-lsi");
DO_TEST("hostdev-scsi-virtio-scsi");
--
2.1.0
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