[PATCH v2 2/2] build command line for pci-bridge device of qemu

[liguang <lig.fnst@xxxxxxxxxxxxxx>]

Signed-off-by: liguang <lig.fnst@xxxxxxxxxxxxxx>
---
 src/qemu/qemu_command.c |   25 ++++++++++++++++++++-----
 1 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 04a9512..0da32e0 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -966,10 +966,15 @@ static char *qemuPCIAddressAsString(virDomainDeviceInfoPtr dev)
 {
     char *addr;
 
-    if (dev->addr.pci.domain != 0 ||
-        dev->addr.pci.bus != 0) {
+    if (dev->addr.pci.domain != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                       _("Only PCI domain 0 and bus 0 are available"));
+                       _("Only PCI domain 0 is available"));
+        return NULL;
+    }
+    if (dev->addr.pci.bridge < 0 && dev->addr.pci.bus != 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("Only PCI bus 0 is available "
+                         "without pci-bridge support"));
         return NULL;
     }
 
@@ -1768,7 +1773,7 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
                            _("Only PCI device addresses with domain=0 are supported"));
             return -1;
         }
-        if (info->addr.pci.bus != 0) {
+        if (info->addr.pci.bus != 0 && info->addr.pci.bridge < 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                            _("Only PCI device addresses with bus=0 are supported"));
             return -1;
@@ -1801,7 +1806,9 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
          * When QEMU grows support for > 1 PCI domain, then pci.0 change
          * to pciNN.0  where NN is the domain number
          */
-        if (qemuCapsGet(caps, QEMU_CAPS_PCI_MULTIBUS))
+        if (info->addr.pci.bridge >= 0)
+            virBufferAsprintf(buf, ",bus=pci.%d", info->addr.pci.bus);
+        else if (qemuCapsGet(caps, QEMU_CAPS_PCI_MULTIBUS))
             virBufferAsprintf(buf, ",bus=pci.0");
         else
             virBufferAsprintf(buf, ",bus=pci");
@@ -3064,6 +3071,12 @@ qemuBuildControllerDevStr(virDomainDefPtr domainDef,
     int model;
 
     switch (def->type) {
+    case VIR_DOMAIN_CONTROLLER_TYPE_PCIBRIDGE:
+        virBufferAsprintf(&buf, "pci-bridge,chassis_nr=%d", def->idx+1);
+        virBufferAsprintf(&buf, ",id=pci.%d", def->idx);
+        if (def->idx == 0)
+            goto out;
+        break;
     case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
         model = def->model;
         if ((qemuSetScsiControllerModel(domainDef, caps, &model)) < 0)
@@ -3137,6 +3150,7 @@ qemuBuildControllerDevStr(virDomainDefPtr domainDef,
     if (qemuBuildDeviceAddressStr(&buf, &def->info, caps) < 0)
         goto error;
 
+out:
     if (virBufferError(&buf)) {
         virReportOOMError();
         goto error;
@@ -5033,6 +5047,7 @@ qemuBuildCommandLine(virConnectPtr conn,
         /* We don't add an explicit IDE or FD controller because the
          * provided PIIX4 device already includes one. It isn't possible to
          * remove the PIIX4. */
+        VIR_DOMAIN_CONTROLLER_TYPE_PCIBRIDGE,
         VIR_DOMAIN_CONTROLLER_TYPE_USB,
         VIR_DOMAIN_CONTROLLER_TYPE_SCSI,
         VIR_DOMAIN_CONTROLLER_TYPE_SATA,
-- 
1.7.2.5

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