1 files changed, 43 insertions, 0 deletions
diff --git a/src/include/ipxe/pcibridge.h b/src/include/ipxe/pcibridge.h
new file mode 100644
index 000000000..c57a81067
--- /dev/null
+++ b/src/include/ipxe/pcibridge.h
@@ -0,0 +1,43 @@
+#ifndef _IPXE_PCIBRIDGE_H
+#define _IPXE_PCIBRIDGE_H
+
+/** @file
+ *
+ * PCI-to-PCI bridge
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <ipxe/list.h>
+#include <ipxe/pci.h>
+
+/** A PCI-to-PCI bridge */
+struct pci_bridge {
+	/** PCI device */
+	struct pci_device *pci;
+	/** Bridge numbers */
+	union {
+		/** Raw dword */
+		uint32_t buses;
+		struct {
+			/** Primary bus */
+			uint8_t primary;
+			/** Secondary bus */
+			uint8_t secondary;
+			/** Subordinate bus */
+			uint8_t subordinate;
+		} __attribute__ (( packed ));
+	};
+	/** Memory base */
+	uint32_t membase;
+	/** Memory limit */
+	uint32_t memlimit;
+	/** List of bridges */
+	struct list_head list;
+};
+
+extern struct pci_bridge * pcibridge_find ( struct pci_device *pci );
+
+#endif /* _IPXE_PCIBRIDGE_H */