diff --git a/src/add-ons/kernel/busses/scsi/ahci/ata_cmds.h b/src/add-ons/kernel/busses/scsi/ahci/ata_cmds.h
new file mode 100644
index 0000000000..ce0239a4e5
--- /dev/null
+++ b/src/add-ons/kernel/busses/scsi/ahci/ata_cmds.h
@@ -0,0 +1,20 @@
+#ifndef _ATA_CMDS_H
+#define _ATA_CMDS_H
+
+#include <SupportDefs.h>
+
+struct ata_res_identify_device
+{
+	union {
+		uint16 		words[256];
+		struct {
+			uint16	data1[10];
+			char	serial_number[20];
+			uint16	data2[3];
+			char	firmware_revision[8];
+			char	model_number[40];
+		};
+	};
+};
+
+#endif