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support multifunction PCI device

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If qemu supports multi function PCI device, the format of the PCI address passed
to qemu is "bus=pci.0,multifunction=on,addr=slot.function".

If qemu does not support multi function PCI device, the format of the PCI address
passed to qemu is "bus=pci.0,addr=slot".
This commit is contained in:
Wen Congyang 2011-05-23 14:42:21 +08:00
parent 6fe678cdaf
commit 9f8baf646e
2 changed files with 24 additions and 6 deletions
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3
src/conf/domain_conf.c
View File

@ -1312,6 +1312,9 @@ int virDomainDeviceAddressIsValid(virDomainDeviceInfoPtr info,
int virDomainDevicePCIAddressIsValid(virDomainDevicePCIAddressPtr addr)
{
/* PCI bus has 32 slots and 8 functions per slot */
if (addr->slot >= 32 || addr->function >= 8)
return 0;
return addr->domain || addr->bus || addr->slot;
}

27
src/qemu/qemu_command.c
View File

@ -1252,10 +1252,20 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
_("Only PCI device addresses with bus=0 are supported"));
return -1;
}
if (info->addr.pci.function != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI device addresses with function=0 are supported"));
return -1;
if (qemuCapsGet(qemuCaps, QEMU_CAPS_PCI_MULTIFUNCTION)) {
if (info->addr.pci.function > 7) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("The function of PCI device addresses must "
"less than 8"));
return -1;
}
} else {
if (info->addr.pci.function != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Only PCI device addresses with function=0 "
"are supported"));
return -1;
}
}
/* XXX
@ -1265,9 +1275,14 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
* to pciNN.0 where NN is the domain number
*/
if (qemuCapsGet(qemuCaps, QEMU_CAPS_PCI_MULTIBUS))
virBufferAsprintf(buf, ",bus=pci.0,addr=0x%x", info->addr.pci.slot);
virBufferAsprintf(buf, ",bus=pci.0");
else
virBufferAsprintf(buf, ",bus=pci,addr=0x%x", info->addr.pci.slot);
virBufferAsprintf(buf, ",bus=pci");
if (qemuCapsGet(qemuCaps, QEMU_CAPS_PCI_MULTIFUNCTION))
virBufferAsprintf(buf, ",multifunction=on,addr=0x%x.0x%x",
info->addr.pci.slot, info->addr.pci.function);
else
virBufferAsprintf(buf, ",addr=0x%x", info->addr.pci.slot);
}
return 0;
}