diff --git a/src/include/device/path.h b/src/include/device/path.h
new file mode 100644
index 0000000..cf89a68
--- /dev/null
+++ b/src/include/device/path.h
@@ -0,0 +1,41 @@
+#ifndef DEVICE_PATH_H
+#define DEVICE_PATH_H
+
+enum device_path_type {
+	DEVICE_PATH_NONE = 0,
+	DEVICE_PATH_PCI,
+	DEVICE_PATH_PNP,
+	DEVICE_PATH_I2C,
+};
+
+struct pci_path
+{
+	unsigned devfn;
+};
+
+struct pnp_path
+{
+	unsigned port;
+	unsigned device;
+};
+
+struct i2c_path
+{
+	unsigned device;
+};
+
+struct device_path {
+	enum device_path_type type;
+	union {
+		struct pci_path pci;
+		struct pnp_path pnp;
+		struct i2c_path i2c;
+	} u;
+};
+
+
+#define DEVICE_PATH_MAX 30
+
+extern int path_eq(struct device_path *path1, struct device_path *path2);
+
+#endif /* DEVICE_PATH_H */