diff --git a/include/linux/firewire-constants.h b/include/linux/firewire-constants.h
new file mode 100644
index 0000000..b316770
--- /dev/null
+++ b/include/linux/firewire-constants.h
@@ -0,0 +1,67 @@
+#ifndef _LINUX_FIREWIRE_CONSTANTS_H
+#define _LINUX_FIREWIRE_CONSTANTS_H
+
+#define TCODE_WRITE_QUADLET_REQUEST	0x0
+#define TCODE_WRITE_BLOCK_REQUEST	0x1
+#define TCODE_WRITE_RESPONSE		0x2
+#define TCODE_READ_QUADLET_REQUEST	0x4
+#define TCODE_READ_BLOCK_REQUEST	0x5
+#define TCODE_READ_QUADLET_RESPONSE	0x6
+#define TCODE_READ_BLOCK_RESPONSE	0x7
+#define TCODE_CYCLE_START		0x8
+#define TCODE_LOCK_REQUEST		0x9
+#define TCODE_STREAM_DATA		0xa
+#define TCODE_LOCK_RESPONSE		0xb
+
+#define EXTCODE_MASK_SWAP		0x1
+#define EXTCODE_COMPARE_SWAP		0x2
+#define EXTCODE_FETCH_ADD		0x3
+#define EXTCODE_LITTLE_ADD		0x4
+#define EXTCODE_BOUNDED_ADD		0x5
+#define EXTCODE_WRAP_ADD		0x6
+#define EXTCODE_VENDOR_DEPENDENT	0x7
+
+/* Juju specific tcodes */
+#define TCODE_LOCK_MASK_SWAP		(0x10 | EXTCODE_MASK_SWAP)
+#define TCODE_LOCK_COMPARE_SWAP		(0x10 | EXTCODE_COMPARE_SWAP)
+#define TCODE_LOCK_FETCH_ADD		(0x10 | EXTCODE_FETCH_ADD)
+#define TCODE_LOCK_LITTLE_ADD		(0x10 | EXTCODE_LITTLE_ADD)
+#define TCODE_LOCK_BOUNDED_ADD		(0x10 | EXTCODE_BOUNDED_ADD)
+#define TCODE_LOCK_WRAP_ADD		(0x10 | EXTCODE_WRAP_ADD)
+#define TCODE_LOCK_VENDOR_DEPENDENT	(0x10 | EXTCODE_VENDOR_DEPENDENT)
+
+#define RCODE_COMPLETE			0x0
+#define RCODE_CONFLICT_ERROR		0x4
+#define RCODE_DATA_ERROR		0x5
+#define RCODE_TYPE_ERROR		0x6
+#define RCODE_ADDRESS_ERROR		0x7
+
+/* Juju specific rcodes */
+#define RCODE_SEND_ERROR		0x10
+#define RCODE_CANCELLED			0x11
+#define RCODE_BUSY			0x12
+#define RCODE_GENERATION		0x13
+#define RCODE_NO_ACK			0x14
+
+#define SCODE_100			0x0
+#define SCODE_200			0x1
+#define SCODE_400			0x2
+#define SCODE_800			0x3
+#define SCODE_1600			0x4
+#define SCODE_3200			0x5
+#define SCODE_BETA			0x3
+
+#define ACK_COMPLETE			0x1
+#define ACK_PENDING			0x2
+#define ACK_BUSY_X			0x4
+#define ACK_BUSY_A			0x5
+#define ACK_BUSY_B			0x6
+#define ACK_DATA_ERROR			0xd
+#define ACK_TYPE_ERROR			0xe
+
+#define RETRY_1				0x00
+#define RETRY_X				0x01
+#define RETRY_A				0x02
+#define RETRY_B				0x03
+
+#endif /* _LINUX_FIREWIRE_CONSTANTS_H */