diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
new file mode 100644
index 0000000..1d54c06
--- /dev/null
+++ b/include/scsi/scsi.h
@@ -0,0 +1,412 @@
+/*
+ * This header file contains public constants and structures used by
+ * the scsi code for linux.
+ *
+ * For documentation on the OPCODES, MESSAGES, and SENSE values,
+ * please consult the SCSI standard.
+ */
+#ifndef _SCSI_SCSI_H
+#define _SCSI_SCSI_H
+
+#include <linux/types.h>
+
+/*
+ *	The maximum sg list length SCSI can cope with
+ *	(currently must be a power of 2 between 32 and 256)
+ */
+#define SCSI_MAX_PHYS_SEGMENTS	MAX_PHYS_SEGMENTS
+
+
+/*
+ *	SCSI command lengths
+ */
+
+extern const unsigned char scsi_command_size[8];
+#define COMMAND_SIZE(opcode) scsi_command_size[((opcode) >> 5) & 7]
+
+/*
+ *	SCSI device types
+ */
+
+#define MAX_SCSI_DEVICE_CODE 14
+extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
+
+/*
+ *      SCSI opcodes
+ */
+
+#define TEST_UNIT_READY       0x00
+#define REZERO_UNIT           0x01
+#define REQUEST_SENSE         0x03
+#define FORMAT_UNIT           0x04
+#define READ_BLOCK_LIMITS     0x05
+#define REASSIGN_BLOCKS       0x07
+#define READ_6                0x08
+#define WRITE_6               0x0a
+#define SEEK_6                0x0b
+#define READ_REVERSE          0x0f
+#define WRITE_FILEMARKS       0x10
+#define SPACE                 0x11
+#define INQUIRY               0x12
+#define RECOVER_BUFFERED_DATA 0x14
+#define MODE_SELECT           0x15
+#define RESERVE               0x16
+#define RELEASE               0x17
+#define COPY                  0x18
+#define ERASE                 0x19
+#define MODE_SENSE            0x1a
+#define START_STOP            0x1b
+#define RECEIVE_DIAGNOSTIC    0x1c
+#define SEND_DIAGNOSTIC       0x1d
+#define ALLOW_MEDIUM_REMOVAL  0x1e
+
+#define SET_WINDOW            0x24
+#define READ_CAPACITY         0x25
+#define READ_10               0x28
+#define WRITE_10              0x2a
+#define SEEK_10               0x2b
+#define WRITE_VERIFY          0x2e
+#define VERIFY                0x2f
+#define SEARCH_HIGH           0x30
+#define SEARCH_EQUAL          0x31
+#define SEARCH_LOW            0x32
+#define SET_LIMITS            0x33
+#define PRE_FETCH             0x34
+#define READ_POSITION         0x34
+#define SYNCHRONIZE_CACHE     0x35
+#define LOCK_UNLOCK_CACHE     0x36
+#define READ_DEFECT_DATA      0x37
+#define MEDIUM_SCAN           0x38
+#define COMPARE               0x39
+#define COPY_VERIFY           0x3a
+#define WRITE_BUFFER          0x3b
+#define READ_BUFFER           0x3c
+#define UPDATE_BLOCK          0x3d
+#define READ_LONG             0x3e
+#define WRITE_LONG            0x3f
+#define CHANGE_DEFINITION     0x40
+#define WRITE_SAME            0x41
+#define READ_TOC              0x43
+#define LOG_SELECT            0x4c
+#define LOG_SENSE             0x4d
+#define MODE_SELECT_10        0x55
+#define RESERVE_10            0x56
+#define RELEASE_10            0x57
+#define MODE_SENSE_10         0x5a
+#define PERSISTENT_RESERVE_IN 0x5e
+#define PERSISTENT_RESERVE_OUT 0x5f
+#define REPORT_LUNS           0xa0
+#define MOVE_MEDIUM           0xa5
+#define READ_12               0xa8
+#define WRITE_12              0xaa
+#define WRITE_VERIFY_12       0xae
+#define SEARCH_HIGH_12        0xb0
+#define SEARCH_EQUAL_12       0xb1
+#define SEARCH_LOW_12         0xb2
+#define READ_ELEMENT_STATUS   0xb8
+#define SEND_VOLUME_TAG       0xb6
+#define WRITE_LONG_2          0xea
+#define READ_16               0x88
+#define WRITE_16              0x8a
+#define VERIFY_16	      0x8f
+#define SERVICE_ACTION_IN     0x9e
+/* values for service action in */
+#define	SAI_READ_CAPACITY_16  0x10
+
+
+/*
+ *  SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
+ *  T10/1561-D Revision 4 Draft dated 7th November 2002.
+ */
+#define SAM_STAT_GOOD            0x00
+#define SAM_STAT_CHECK_CONDITION 0x02
+#define SAM_STAT_CONDITION_MET   0x04
+#define SAM_STAT_BUSY            0x08
+#define SAM_STAT_INTERMEDIATE    0x10
+#define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14
+#define SAM_STAT_RESERVATION_CONFLICT 0x18
+#define SAM_STAT_COMMAND_TERMINATED 0x22	/* obsolete in SAM-3 */
+#define SAM_STAT_TASK_SET_FULL   0x28
+#define SAM_STAT_ACA_ACTIVE      0x30
+#define SAM_STAT_TASK_ABORTED    0x40
+
+/** scsi_status_is_good - check the status return.
+ *
+ * @status: the status passed up from the driver (including host and
+ *          driver components)
+ *
+ * This returns true for known good conditions that may be treated as
+ * command completed normally
+ */
+static inline int scsi_status_is_good(int status)
+{
+	/*
+	 * FIXME: bit0 is listed as reserved in SCSI-2, but is
+	 * significant in SCSI-3.  For now, we follow the SCSI-2
+	 * behaviour and ignore reserved bits.
+	 */
+	status &= 0xfe;
+	return ((status == SAM_STAT_GOOD) ||
+		(status == SAM_STAT_INTERMEDIATE) ||
+		(status == SAM_STAT_INTERMEDIATE_CONDITION_MET) ||
+		/* FIXME: this is obsolete in SAM-3 */
+		(status == SAM_STAT_COMMAND_TERMINATED));
+}
+
+/*
+ *  Status codes. These are deprecated as they are shifted 1 bit right
+ *  from those found in the SCSI standards. This causes confusion for
+ *  applications that are ported to several OSes. Prefer SAM Status codes
+ *  above.
+ */
+
+#define GOOD                 0x00
+#define CHECK_CONDITION      0x01
+#define CONDITION_GOOD       0x02
+#define BUSY                 0x04
+#define INTERMEDIATE_GOOD    0x08
+#define INTERMEDIATE_C_GOOD  0x0a
+#define RESERVATION_CONFLICT 0x0c
+#define COMMAND_TERMINATED   0x11
+#define QUEUE_FULL           0x14
+#define ACA_ACTIVE           0x18
+#define TASK_ABORTED         0x20
+
+#define STATUS_MASK          0xfe
+
+/*
+ *  SENSE KEYS
+ */
+
+#define NO_SENSE            0x00
+#define RECOVERED_ERROR     0x01
+#define NOT_READY           0x02
+#define MEDIUM_ERROR        0x03
+#define HARDWARE_ERROR      0x04
+#define ILLEGAL_REQUEST     0x05
+#define UNIT_ATTENTION      0x06
+#define DATA_PROTECT        0x07
+#define BLANK_CHECK         0x08
+#define COPY_ABORTED        0x0a
+#define ABORTED_COMMAND     0x0b
+#define VOLUME_OVERFLOW     0x0d
+#define MISCOMPARE          0x0e
+
+
+/*
+ *  DEVICE TYPES
+ */
+
+#define TYPE_DISK           0x00
+#define TYPE_TAPE           0x01
+#define TYPE_PRINTER        0x02
+#define TYPE_PROCESSOR      0x03    /* HP scanners use this */
+#define TYPE_WORM           0x04    /* Treated as ROM by our system */
+#define TYPE_ROM            0x05
+#define TYPE_SCANNER        0x06
+#define TYPE_MOD            0x07    /* Magneto-optical disk - 
+				     * - treated as TYPE_DISK */
+#define TYPE_MEDIUM_CHANGER 0x08
+#define TYPE_COMM           0x09    /* Communications device */
+#define TYPE_ENCLOSURE      0x0d    /* Enclosure Services Device */
+#define TYPE_RAID           0x0c
+#define TYPE_NO_LUN         0x7f
+
+/*
+ * standard mode-select header prepended to all mode-select commands
+ */
+
+struct ccs_modesel_head {
+	__u8 _r1;			/* reserved */
+	__u8 medium;		/* device-specific medium type */
+	__u8 _r2;			/* reserved */
+	__u8 block_desc_length;	/* block descriptor length */
+	__u8 density;		/* device-specific density code */
+	__u8 number_blocks_hi;	/* number of blocks in this block desc */
+	__u8 number_blocks_med;
+	__u8 number_blocks_lo;
+	__u8 _r3;
+	__u8 block_length_hi;	/* block length for blocks in this desc */
+	__u8 block_length_med;
+	__u8 block_length_lo;
+};
+
+/*
+ * ScsiLun: 8 byte LUN.
+ */
+struct scsi_lun {
+	__u8 scsi_lun[8];
+};
+
+/*
+ *  MESSAGE CODES
+ */
+
+#define COMMAND_COMPLETE    0x00
+#define EXTENDED_MESSAGE    0x01
+#define     EXTENDED_MODIFY_DATA_POINTER    0x00
+#define     EXTENDED_SDTR                   0x01
+#define     EXTENDED_EXTENDED_IDENTIFY      0x02    /* SCSI-I only */
+#define     EXTENDED_WDTR                   0x03
+#define     EXTENDED_PPR                    0x04
+#define     EXTENDED_MODIFY_BIDI_DATA_PTR   0x05
+#define SAVE_POINTERS       0x02
+#define RESTORE_POINTERS    0x03
+#define DISCONNECT          0x04
+#define INITIATOR_ERROR     0x05
+#define ABORT_TASK_SET      0x06
+#define MESSAGE_REJECT      0x07
+#define NOP                 0x08
+#define MSG_PARITY_ERROR    0x09
+#define LINKED_CMD_COMPLETE 0x0a
+#define LINKED_FLG_CMD_COMPLETE 0x0b
+#define TARGET_RESET        0x0c
+#define ABORT_TASK          0x0d
+#define CLEAR_TASK_SET      0x0e
+#define INITIATE_RECOVERY   0x0f            /* SCSI-II only */
+#define RELEASE_RECOVERY    0x10            /* SCSI-II only */
+#define CLEAR_ACA           0x16
+#define LOGICAL_UNIT_RESET  0x17
+#define SIMPLE_QUEUE_TAG    0x20
+#define HEAD_OF_QUEUE_TAG   0x21
+#define ORDERED_QUEUE_TAG   0x22
+#define IGNORE_WIDE_RESIDUE 0x23
+#define ACA                 0x24
+#define QAS_REQUEST         0x55
+
+/* Old SCSI2 names, don't use in new code */
+#define BUS_DEVICE_RESET    TARGET_RESET
+#define ABORT               ABORT_TASK_SET
+
+/*
+ * Host byte codes
+ */
+
+#define DID_OK          0x00	/* NO error                                */
+#define DID_NO_CONNECT  0x01	/* Couldn't connect before timeout period  */
+#define DID_BUS_BUSY    0x02	/* BUS stayed busy through time out period */
+#define DID_TIME_OUT    0x03	/* TIMED OUT for other reason              */
+#define DID_BAD_TARGET  0x04	/* BAD target.                             */
+#define DID_ABORT       0x05	/* Told to abort for some other reason     */
+#define DID_PARITY      0x06	/* Parity error                            */
+#define DID_ERROR       0x07	/* Internal error                          */
+#define DID_RESET       0x08	/* Reset by somebody.                      */
+#define DID_BAD_INTR    0x09	/* Got an interrupt we weren't expecting.  */
+#define DID_PASSTHROUGH 0x0a	/* Force command past mid-layer            */
+#define DID_SOFT_ERROR  0x0b	/* The low level driver just wish a retry  */
+#define DID_IMM_RETRY   0x0c	/* Retry without decrementing retry count  */
+#define DRIVER_OK       0x00	/* Driver status                           */
+
+/*
+ *  These indicate the error that occurred, and what is available.
+ */
+
+#define DRIVER_BUSY         0x01
+#define DRIVER_SOFT         0x02
+#define DRIVER_MEDIA        0x03
+#define DRIVER_ERROR        0x04
+
+#define DRIVER_INVALID      0x05
+#define DRIVER_TIMEOUT      0x06
+#define DRIVER_HARD         0x07
+#define DRIVER_SENSE	    0x08
+
+#define SUGGEST_RETRY       0x10
+#define SUGGEST_ABORT       0x20
+#define SUGGEST_REMAP       0x30
+#define SUGGEST_DIE         0x40
+#define SUGGEST_SENSE       0x80
+#define SUGGEST_IS_OK       0xff
+
+#define DRIVER_MASK         0x0f
+#define SUGGEST_MASK        0xf0
+
+/*
+ * Internal return values.
+ */
+
+#define NEEDS_RETRY     0x2001
+#define SUCCESS         0x2002
+#define FAILED          0x2003
+#define QUEUED          0x2004
+#define SOFT_ERROR      0x2005
+#define ADD_TO_MLQUEUE  0x2006
+#define TIMEOUT_ERROR   0x2007
+
+/*
+ * Midlevel queue return values.
+ */
+#define SCSI_MLQUEUE_HOST_BUSY   0x1055
+#define SCSI_MLQUEUE_DEVICE_BUSY 0x1056
+#define SCSI_MLQUEUE_EH_RETRY    0x1057
+
+/*
+ *  Use these to separate status msg and our bytes
+ *
+ *  These are set by:
+ *
+ *      status byte = set from target device
+ *      msg_byte    = return status from host adapter itself.
+ *      host_byte   = set by low-level driver to indicate status.
+ *      driver_byte = set by mid-level.
+ */
+#define status_byte(result) (((result) >> 1) & 0x7f)
+#define msg_byte(result)    (((result) >> 8) & 0xff)
+#define host_byte(result)   (((result) >> 16) & 0xff)
+#define driver_byte(result) (((result) >> 24) & 0xff)
+#define suggestion(result)  (driver_byte(result) & SUGGEST_MASK)
+
+#define sense_class(sense)  (((sense) >> 4) & 0x7)
+#define sense_error(sense)  ((sense) & 0xf)
+#define sense_valid(sense)  ((sense) & 0x80);
+
+
+#define IDENTIFY_BASE       0x80
+#define IDENTIFY(can_disconnect, lun)   (IDENTIFY_BASE |\
+		     ((can_disconnect) ?  0x40 : 0) |\
+		     ((lun) & 0x07))
+
+/*
+ *  struct scsi_device::scsi_level values. For SCSI devices other than those
+ *  prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1)
+ *  where "resp" is a byte array of the response to an INQUIRY. The scsi_level
+ *  variable is visible to the user via sysfs.
+ */
+
+#define SCSI_UNKNOWN    0
+#define SCSI_1          1
+#define SCSI_1_CCS      2
+#define SCSI_2          3
+#define SCSI_3          4        /* SPC */
+#define SCSI_SPC_2      5
+#define SCSI_SPC_3      6
+
+/*
+ * INQ PERIPHERAL QUALIFIERS
+ */
+#define SCSI_INQ_PQ_CON         0x00
+#define SCSI_INQ_PQ_NOT_CON     0x01
+#define SCSI_INQ_PQ_NOT_CAP     0x03
+
+
+/*
+ * Here are some scsi specific ioctl commands which are sometimes useful.
+ *
+ * Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395
+ */
+
+/* Used to obtain PUN and LUN info.  Conflicts with CDROMAUDIOBUFSIZ */
+#define SCSI_IOCTL_GET_IDLUN		0x5382
+
+/* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */
+
+/* Used to obtain the host number of a device. */
+#define SCSI_IOCTL_PROBE_HOST		0x5385
+
+/* Used to obtain the bus number for a device */
+#define SCSI_IOCTL_GET_BUS_NUMBER	0x5386
+
+/* Used to obtain the PCI location of a device */
+#define SCSI_IOCTL_GET_PCI		0x5387
+
+#endif /* _SCSI_SCSI_H */