1 files changed, 17 insertions, 0 deletions

diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h
index b3341e9cd8fd..a54ee1d054d9 100644
--- a/arch/x86/include/asm/amd_nb.h
+++ b/arch/x86/include/asm/amd_nb.h
@@ -81,6 +81,23 @@ static inline struct amd_northbridge *node_to_amd_nb(int node)
         return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
 }
 
+static inline u16 amd_get_node_id(struct pci_dev *pdev)
+{
+        struct pci_dev *misc;
+        int i;
+
+        for (i = 0; i != amd_nb_num(); i++) {
+                misc = node_to_amd_nb(i)->misc;
+
+                if (pci_domain_nr(misc->bus) == pci_domain_nr(pdev->bus) &&
+                    PCI_SLOT(misc->devfn) == PCI_SLOT(pdev->devfn))
+                        return i;
+        }
+
+        WARN(1, "Unable to find AMD Northbridge id for %s\n", pci_name(pdev));
+        return 0;
+}
+
 #else
 
 #define amd_nb_num(x)           0