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[libvirt] [PATCH v4 07/12] conf: Introduce parser, formatter for uid and fid



This patch introduces new XML parser/formatter functions. Uid is
16-bit and non-zero. Fid is 32-bit. They are added as two new
attributes of PCI address, and parsed/formatted along with PCI
address parser/formatter. The related test is also added.

Signed-off-by: Yi Min Zhao <zyimin linux ibm com>
Reviewed-by: Boris Fiuczynski <fiuczy linux vnet ibm com>
Reviewed-by: Stefan Zimmermann <stzi linux ibm com>
Reviewed-by: Bjoern Walk <bwalk linux vnet ibm com>
Reviewed-by: Ján Tomko <jtomko redhat com>
---
 docs/schemas/basictypes.rng                        | 23 ++++++++
 docs/schemas/domaincommon.rng                      |  1 +
 src/conf/device_conf.c                             | 62 ++++++++++++++++++++++
 src/conf/device_conf.h                             |  6 +++
 src/conf/domain_addr.c                             |  3 ++
 src/conf/domain_conf.c                             |  6 +++
 src/qemu/qemu_domain.c                             | 26 +++++++++
 src/util/virpci.h                                  |  3 ++
 tests/qemuxml2argvdata/disk-virtio-s390-zpci.args  | 25 +++++++++
 tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml   | 17 ++++++
 tests/qemuxml2argvdata/hostdev-vfio-zpci.args      | 23 ++++++++
 tests/qemuxml2argvdata/hostdev-vfio-zpci.xml       | 19 +++++++
 tests/qemuxml2argvtest.c                           |  7 +++
 tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml | 29 ++++++++++
 tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml     | 30 +++++++++++
 tests/qemuxml2xmltest.c                            |  6 +++
 16 files changed, 286 insertions(+)
 create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
 create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
 create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.args
 create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
 create mode 100644 tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
 create mode 100644 tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml

diff --git a/docs/schemas/basictypes.rng b/docs/schemas/basictypes.rng
index 14a3670e5c..3defb56316 100644
--- a/docs/schemas/basictypes.rng
+++ b/docs/schemas/basictypes.rng
@@ -65,6 +65,17 @@
       </data>
     </choice>
   </define>
+  <define name="uint32">
+    <choice>
+      <data type="string">
+        <param name="pattern">(0x)?[0-9a-fA-F]{1,8}</param>
+      </data>
+      <data type="unsignedInt">
+        <param name="minInclusive">0</param>
+        <param name="maxInclusive">4294967295</param>
+      </data>
+    </choice>
+  </define>
 
   <define name="UUID">
     <choice>
@@ -111,6 +122,18 @@
       </attribute>
     </optional>
   </define>
+  <define name="zpciaddress">
+    <optional>
+      <attribute name="uid">
+        <ref name="uint16"/>
+      </attribute>
+    </optional>
+    <optional>
+      <attribute name="fid">
+        <ref name="uint32"/>
+      </attribute>
+    </optional>
+  </define>
 
   <!-- a 6 byte MAC address in ASCII-hex format, eg "12:34:56:78:9A:BC" -->
   <!-- The lowest bit of the 1st byte is the "multicast" bit. a         -->
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index f176538195..e74180af79 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5219,6 +5219,7 @@
             <value>pci</value>
           </attribute>
           <ref name="pciaddress"/>
+          <ref name="zpciaddress"/>
         </group>
         <group>
           <attribute name="type">
diff --git a/src/conf/device_conf.c b/src/conf/device_conf.c
index d69f94fadf..192526e95d 100644
--- a/src/conf/device_conf.c
+++ b/src/conf/device_conf.c
@@ -32,6 +32,65 @@
 
 #define VIR_FROM_THIS VIR_FROM_DEVICE
 
+static int
+virZPCIDeviceAddressIsValid(virZPCIDeviceAddressPtr zpci)
+{
+    /* We don't need to check fid because fid covers
+     * all range of uint32 type.
+     */
+    if (zpci->uid > VIR_DOMAIN_DEVICE_ZPCI_MAX_UID ||
+        zpci->uid == 0) {
+        virReportError(VIR_ERR_XML_ERROR,
+                       _("Invalid PCI address uid='0x%x', "
+                         "must be > 0x0 and <= 0x%x"),
+                       zpci->uid,
+                       VIR_DOMAIN_DEVICE_ZPCI_MAX_UID);
+        return 0;
+    }
+
+    return 1;
+}
+
+static int
+virZPCIDeviceAddressParseXML(xmlNodePtr node,
+                             virPCIDeviceAddressPtr addr)
+{
+    char *uid, *fid;
+    int ret = -1;
+    virZPCIDeviceAddress def = { 0 };
+
+    uid = virXMLPropString(node, "uid");
+    fid = virXMLPropString(node, "fid");
+
+    if (uid) {
+        if (virStrToLong_uip(uid, NULL, 0, &def.uid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Cannot parse <address> 'uid' attribute"));
+            goto cleanup;
+        }
+    }
+
+    if (fid) {
+        if (virStrToLong_uip(fid, NULL, 0, &def.fid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Cannot parse <address> 'fid' attribute"));
+            goto cleanup;
+        }
+    }
+
+    if (!virZPCIDeviceAddressIsEmpty(&def) &&
+        !virZPCIDeviceAddressIsValid(&def))
+        goto cleanup;
+
+    addr->zpci = def;
+    ret = 0;
+
+ cleanup:
+    VIR_FREE(uid);
+    VIR_FREE(fid);
+    return ret;
+}
+
 int
 virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
                         virDomainDeviceInfoPtr src)
@@ -245,6 +304,9 @@ virPCIDeviceAddressParseXML(xmlNodePtr node,
     if (!virPCIDeviceAddressIsEmpty(addr) && !virPCIDeviceAddressIsValid(addr, true))
         goto cleanup;
 
+    if (virZPCIDeviceAddressParseXML(node, addr) < 0)
+        goto cleanup;
+
     ret = 0;
 
  cleanup:
diff --git a/src/conf/device_conf.h b/src/conf/device_conf.h
index 6f926dff1d..1e787d3752 100644
--- a/src/conf/device_conf.h
+++ b/src/conf/device_conf.h
@@ -211,6 +211,12 @@ virDeviceInfoPCIAddressPresent(const virDomainDeviceInfo *info)
        !virPCIDeviceAddressIsEmpty(&info->addr.pci);
 }
 
+static inline bool
+virZPCIDeviceAddressIsEmpty(const virZPCIDeviceAddress *addr)
+{
+    return !(addr->uid || addr->fid);
+}
+
 int virPCIDeviceAddressParseXML(xmlNodePtr node,
                                 virPCIDeviceAddressPtr addr);
 
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 8d3e75f19a..90d8abc1f4 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1044,6 +1044,9 @@ virDomainPCIAddressReserveNextAddr(virDomainPCIAddressSetPtr addrs,
                                        dev->isolationGroup, function) < 0)
         return -1;
 
+    if (dev->pciAddressExtFlags & VIR_PCI_ADDRESS_EXTENSION_ZPCI)
+        addr.zpci = dev->addr.pci.zpci;
+
     if (virDomainPCIAddressReserveAddrInternal(addrs, &addr, flags,
                                                dev->isolationGroup, false) < 0)
         return -1;
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index bde9fef914..591c85759d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -6509,6 +6509,12 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
                               info->addr.pci.slot,
                               info->addr.pci.function);
         }
+        if (!virZPCIDeviceAddressIsEmpty(&info->addr.pci.zpci)) {
+            virBufferAsprintf(buf, " uid='0x%.4x'",
+                              info->addr.pci.zpci.uid);
+            virBufferAsprintf(buf, " fid='0x%.8x'",
+                              info->addr.pci.zpci.fid);
+        }
         if (info->addr.pci.multi) {
            virBufferAsprintf(buf, " multifunction='%s'",
                              virTristateSwitchTypeToString(info->addr.pci.multi));
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index a6e143dc33..d437c432e3 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -5716,6 +5716,27 @@ qemuDomainDeviceDefValidateGraphics(const virDomainGraphicsDef *graphics,
 }
 
 
+static int
+qemuDomainZPCIAddressDefValidate(virDomainDeviceDef *dev,
+                                 virQEMUCapsPtr qemuCaps)
+{
+    virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);
+
+    if (!info || (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI))
+        return 0;
+
+    if (!virZPCIDeviceAddressIsEmpty(&info->addr.pci.zpci) &&
+        !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_ZPCI)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                       "%s",
+                       _("This QEMU binary doesn't support zPCI."));
+        return -1;
+    }
+
+    return 0;
+}
+
+
 static int
 qemuDomainDeviceDefValidate(const virDomainDeviceDef *dev,
                             const virDomainDef *def,
@@ -5729,6 +5750,10 @@ qemuDomainDeviceDefValidate(const virDomainDeviceDef *dev,
                                             def->emulator)))
         return -1;
 
+    ret = qemuDomainZPCIAddressDefValidate((virDomainDeviceDef *)dev, qemuCaps);
+    if (ret < 0)
+        goto out;
+
     switch ((virDomainDeviceType)dev->type) {
     case VIR_DOMAIN_DEVICE_NET:
         ret = qemuDomainDeviceDefValidateNetwork(dev->data.net);
@@ -5804,6 +5829,7 @@ qemuDomainDeviceDefValidate(const virDomainDeviceDef *dev,
         break;
     }
 
+ out:
     virObjectUnref(qemuCaps);
     return ret;
 }
diff --git a/src/util/virpci.h b/src/util/virpci.h
index b7bcfa6d9f..e2ffe11625 100644
--- a/src/util/virpci.h
+++ b/src/util/virpci.h
@@ -37,6 +37,9 @@ typedef virPCIDeviceAddress *virPCIDeviceAddressPtr;
 typedef struct _virPCIDeviceList virPCIDeviceList;
 typedef virPCIDeviceList *virPCIDeviceListPtr;
 
+# define VIR_DOMAIN_DEVICE_ZPCI_MAX_UID UINT16_MAX
+# define VIR_DOMAIN_DEVICE_ZPCI_MAX_FID UINT32_MAX
+
 typedef struct _virZPCIDeviceAddress virZPCIDeviceAddress;
 typedef virZPCIDeviceAddress *virZPCIDeviceAddressPtr;
 struct _virZPCIDeviceAddress {
diff --git a/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
new file mode 100644
index 0000000000..8ac435cb3e
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
@@ -0,0 +1,25 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-s390x \
+-name QEMUGuest1 \
+-S \
+-machine s390-ccw-virtio,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-pci,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-ccw,id=balloon0,devno=fe.0.0000
diff --git a/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
new file mode 100644
index 0000000000..7887b97b2c
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
@@ -0,0 +1,17 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219136</memory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0' uid='0x0019' fid='0x0000001f'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/hostdev-vfio-zpci.args b/tests/qemuxml2argvdata/hostdev-vfio-zpci.args
new file mode 100644
index 0000000000..d6b1520c47
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-vfio-zpci.args
@@ -0,0 +1,23 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-s390x \
+-name QEMUGuest1 \
+-S \
+-machine s390-ccw-virtio,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-device vfio-pci,host=00:00.0,id=hostdev0,bus=pci.0,addr=0x8 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x1
diff --git a/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml b/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
new file mode 100644
index 0000000000..cde333e220
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
@@ -0,0 +1,19 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219100</memory>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <hostdev mode='subsystem' type='pci' managed='no'>
+      <driver name='vfio'/>
+      <source>
+        <address domain='0x0000' bus='0x00' slot='0x00' function='0x0'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0' uid='0x0019' fid='0x0000001f'/>
+    </hostdev>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 82b5b7bbea..5297dd80e0 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1058,6 +1058,10 @@ mymain(void)
             QEMU_CAPS_CCW, QEMU_CAPS_VIRTIO_S390);
     DO_TEST("disk-virtio-scsi-ccw", QEMU_CAPS_VIRTIO_SCSI,
             QEMU_CAPS_CCW, QEMU_CAPS_VIRTIO_S390);
+    DO_TEST("disk-virtio-s390-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW,
+            QEMU_CAPS_VIRTIO_S390);
     DO_TEST("disk-order", QEMU_CAPS_VIRTIO_BLK_SCSI);
     DO_TEST("disk-virtio-queues",
             QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES);
@@ -1651,6 +1655,9 @@ mymain(void)
     DO_TEST_PARSE_ERROR("hostdev-mdev-display-missing-graphics",
             QEMU_CAPS_DEVICE_VFIO_PCI,
             QEMU_CAPS_VFIO_PCI_DISPLAY);
+    DO_TEST("hostdev-vfio-zpci",
+            QEMU_CAPS_DEVICE_VFIO_PCI,
+            QEMU_CAPS_DEVICE_ZPCI);
     DO_TEST("pci-rom", NONE);
     DO_TEST("pci-rom-disabled", NONE);
     DO_TEST("pci-rom-disabled-invalid", NONE);
diff --git a/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml b/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
new file mode 100644
index 0000000000..39b5acdf3b
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
@@ -0,0 +1,29 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>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/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0' uid='0x0019' fid='0x0000001f'/>
+    </disk>
+    <controller type='pci' index='0' model='pci-root'/>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml b/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml
new file mode 100644
index 0000000000..1f48c44e30
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml
@@ -0,0 +1,30 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>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/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <hostdev mode='subsystem' type='pci' managed='no'>
+      <driver name='vfio'/>
+      <source>
+        <address domain='0x0000' bus='0x00' slot='0x00' function='0x0'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0' uid='0x0019' fid='0x0000001f'/>
+    </hostdev>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 43fd4e5f0f..47f3b9431b 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -379,6 +379,9 @@ mymain(void)
             QEMU_CAPS_VIRTIO_SCSI);
     DO_TEST("disk-virtio-scsi-ioeventfd",
             QEMU_CAPS_VIRTIO_SCSI);
+    DO_TEST("disk-virtio-s390-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW);
     DO_TEST("disk-scsi-megasas",
             QEMU_CAPS_SCSI_MEGASAS);
     DO_TEST("disk-scsi-mptsas1068",
@@ -460,6 +463,9 @@ mymain(void)
     DO_TEST("hostdev-usb-address", NONE);
     DO_TEST("hostdev-pci-address", NONE);
     DO_TEST("hostdev-vfio", NONE);
+    DO_TEST("hostdev-vfio-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW);
     DO_TEST("hostdev-mdev-precreated", NONE);
     DO_TEST("hostdev-mdev-display", QEMU_CAPS_VFIO_PCI_DISPLAY);
     DO_TEST("pci-rom", NONE);
-- 
Yi Min


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