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qemuBuildDeviceAddressPCIStr: Extract PCI bus name lookup

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Split up the bus lookup into a function called
'qemuBuildDeviceAddressPCIGetBus'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2021-03-26 14:31:26 +01:00
parent 2fbda628c6
commit e1eae5c430
1 changed files with 30 additions and 18 deletions
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48
src/qemu/qemu_command.c
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@ -320,10 +320,9 @@ qemuVirCommandGetDevSet(virCommand *cmd, int fd)
}
static int
qemuBuildDeviceAddressPCIStr(virBuffer *buf,
const virDomainDef *domainDef,
virDomainDeviceInfo *info)
static char *
qemuBuildDeviceAddressPCIGetBus(const virDomainDef *domainDef,
virDomainDeviceInfo *info)
{
g_autofree char *devStr = NULL;
const char *contAlias = NULL;
@ -332,7 +331,7 @@ qemuBuildDeviceAddressPCIStr(virBuffer *buf,
size_t i;
if (!(devStr = virPCIDeviceAddressAsString(&info->addr.pci)))
return -1;
return NULL;
for (i = 0; i < domainDef->ncontrollers; i++) {
virDomainControllerDef *cont = domainDef->controllers[i];
@ -347,7 +346,7 @@ qemuBuildDeviceAddressPCIStr(virBuffer *buf,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Device alias was not set for PCI controller with index '%u' required for device at address '%s'"),
info->addr.pci.bus, devStr);
return -1;
return NULL;
}
if (virDomainDeviceAliasIsUserAlias(contAlias)) {
@ -372,20 +371,33 @@ qemuBuildDeviceAddressPCIStr(virBuffer *buf,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Could not find PCI controller with index '%u' required for device at address '%s'"),
info->addr.pci.bus, devStr);
return -1;
return NULL;
}
if (contIsPHB && contTargetIndex > 0) {
/* The PCI bus created by a spapr-pci-host-bridge device with
* alias 'x' will be called 'x.0' rather than 'x'; however,
* this does not apply to the implicit PHB in a pSeries guest,
* which always has the hardcoded name 'pci.0' */
virBufferAsprintf(buf, ",bus=%s.0", contAlias);
} else {
/* For all other controllers, the bus name matches the alias
* of the corresponding controller */
virBufferAsprintf(buf, ",bus=%s", contAlias);
}
/* The PCI bus created by a spapr-pci-host-bridge device with
* alias 'x' will be called 'x.0' rather than 'x'; however,
* this does not apply to the implicit PHB in a pSeries guest,
* which always has the hardcoded name 'pci.0' */
if (contIsPHB && contTargetIndex > 0)
return g_strdup_printf("%s.0", contAlias);
/* For all other controllers, the bus name matches the alias
* of the corresponding controller */
return g_strdup(contAlias);
}
static int
qemuBuildDeviceAddressPCIStr(virBuffer *buf,
const virDomainDef *domainDef,
virDomainDeviceInfo *info)
{
g_autofree char *bus = NULL;
if (!(bus = qemuBuildDeviceAddressPCIGetBus(domainDef, info)))
return -1;
virBufferStrcat(buf, ",bus=", bus, NULL);
if (info->addr.pci.multi == VIR_TRISTATE_SWITCH_ON)
virBufferAddLit(buf, ",multifunction=on");