pci: Implement BusInfo.get_dev_path()
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>
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14
hw/pci.c
14
hw/pci.c
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@ -58,11 +58,13 @@ struct PCIBus {
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};
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static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent);
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static char *pcibus_get_dev_path(DeviceState *dev);
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static struct BusInfo pci_bus_info = {
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.name = "PCI",
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.size = sizeof(PCIBus),
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.print_dev = pcibus_dev_print,
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.get_dev_path = pcibus_get_dev_path,
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.props = (Property[]) {
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DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
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DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
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@ -1853,6 +1855,18 @@ static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
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}
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}
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static char *pcibus_get_dev_path(DeviceState *dev)
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{
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PCIDevice *d = (PCIDevice *)dev;
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char path[16];
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snprintf(path, sizeof(path), "%04x:%02x:%02x.%x",
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pci_find_domain(d->bus), d->config[PCI_SECONDARY_BUS],
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PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
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return strdup(path);
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}
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static PCIDeviceInfo bridge_info = {
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.qdev.name = "pci-bridge",
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.qdev.size = sizeof(PCIBridge),
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