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pci: Add pci_dev_bus_num() helper

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A fair proportion of the users of pci_bus_num() want to get the bus
number on a specific device, so first have to look up the bus from the
device then call it.  This adds a helper to do that (since we're going
to make looking up the bus slightly more verbose).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
David Gibson
2017-11-29 19:46:26 +11:00
committed by Michael S. Tsirkin
parent 791bf3c8f0
commit cdc57472dc
7 changed files with 16 additions and 11 deletions
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5
include/hw/pci/pci.h
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@@ -436,6 +436,11 @@ PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
PCIDevice *pci_vga_init(PCIBus *bus);
int pci_bus_num(PCIBus *s);
static inline int pci_dev_bus_num(const PCIDevice *dev)
{
return pci_bus_num(dev->bus);
}
int pci_bus_numa_node(PCIBus *bus);
void pci_for_each_device(PCIBus *bus, int bus_num,
void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque),