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pci: Implement BusInfo.get_dev_path()

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This works great for PCI since a <segment>:<bus>:<dev>.<fn> uniquely
describes a global address.  No need to traverse up the qdev tree.
PCI segment support is a placeholder for compatibility once we
support multiple segments.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Alex Williamson 2010-06-25 11:08:59 -06:00 committed by Anthony Liguori
parent 6772b9364a
commit 4f43c1ff3b
1 changed files with 14 additions and 0 deletions
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14
hw/pci.c
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@ -58,11 +58,13 @@ struct PCIBus {
};
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent);
static char *pcibus_get_dev_path(DeviceState *dev);
static struct BusInfo pci_bus_info = {
.name = "PCI",
.size = sizeof(PCIBus),
.print_dev = pcibus_dev_print,
.get_dev_path = pcibus_get_dev_path,
.props = (Property[]) {
DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
@ -1853,6 +1855,18 @@ static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
}
}
static char *pcibus_get_dev_path(DeviceState *dev)
{
PCIDevice *d = (PCIDevice *)dev;
char path[16];
snprintf(path, sizeof(path), "%04x:%02x:%02x.%x",
pci_find_domain(d->bus), d->config[PCI_SECONDARY_BUS],
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
return strdup(path);
}
static PCIDeviceInfo bridge_info = {
.qdev.name = "pci-bridge",
.qdev.size = sizeof(PCIBridge),