/*
 * Largely written by Julian Elischer (julian@tfs.com)
 * for TRW Financial Systems.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
 *
 * $FreeBSD: src/sys/cam/scsi/scsi_all.h,v 1.31 2008/08/07 17:25:05 jkim Exp $
 */

/*
 * SCSI general  interface description
 */

#ifndef	_SCSI_SCSI_ALL_H
#define _SCSI_SCSI_ALL_H 1

#ifndef _SYS_CDEFS_H_
#include <sys/cdefs.h>
#endif
#if !defined(_KERNEL) && !defined(_STDIO_H_)
#include <stdio.h>	/* FILE for userland protos */
#endif

#ifdef _KERNEL
/*
 * This is the number of milliseconds we wait for devices to settle after a SCSI
 * bus reset.
 */
extern int scsi_delay;
#endif /* _KERNEL */

/*
 * SCSI command format
 */

/*
 * Define dome bits that are in ALL (or a lot of) scsi commands
 */
#define SCSI_CTL_LINK		0x01
#define SCSI_CTL_FLAG		0x02
#define SCSI_CTL_VENDOR		0xC0
#define	SCSI_CMD_LUN		0xA0	/* these two should not be needed */
#define	SCSI_CMD_LUN_SHIFT	5	/* LUN in the cmd is no longer SCSI */

#define SCSI_MAX_CDBLEN		16	/*
					 * 16 byte commands are in the
					 * SCSI-3 spec
					 */
#if defined(CAM_MAX_CDBLEN) && (CAM_MAX_CDBLEN < SCSI_MAX_CDBLEN)
#error "CAM_MAX_CDBLEN cannot be less than SCSI_MAX_CDBLEN"
#endif

/* 6byte CDBs special case 0 length to be 256 */
#define SCSI_CDB6_LEN(len)	((len) == 0 ? 256 : len)

/*
 * This type defines actions to be taken when a particular sense code is
 * received.  Right now, these flags are only defined to take up 16 bits,
 * but can be expanded in the future if necessary.
 */
typedef enum {
	SS_NOP      = 0x000000,	/* Do nothing */
	SS_RETRY    = 0x010000,	/* Retry the command */
	SS_FAIL     = 0x020000,	/* Bail out */
	SS_START    = 0x030000,	/* Send a Start Unit command to the device,
				 * then retry the original command.
				 */
	SS_TUR      = 0x040000,	/* Send a Test Unit Ready command to the
				 * device, then retry the original command.
				 */
	SS_REQSENSE = 0x050000,	/* Send a RequestSense command to the
				 * device, then retry the original command.
				 */
	SS_MASK     = 0xff0000
} scsi_sense_action;

typedef enum {
	SSQ_NONE		= 0x0000,
	SSQ_DECREMENT_COUNT	= 0x0100,  /* Decrement the retry count */
	SSQ_MANY		= 0x0200,  /* send lots of recovery commands */
	SSQ_RANGE		= 0x0400,  /*
					    * This table entry represents the
					    * end of a range of ASCQs that
					    * have identical error actions
					    * and text.
					    */
	SSQ_PRINT_SENSE		= 0x0800,
	SSQ_MASK		= 0xff00
} scsi_sense_action_qualifier;

/* Mask for error status values */
#define SS_ERRMASK	0xff

/* The default, retyable, error action */
#define SS_RDEF		SS_RETRY|SSQ_DECREMENT_COUNT|SSQ_PRINT_SENSE|EIO

/* The retyable, error action, with table specified error code */
#define SS_RET		SS_RETRY|SSQ_DECREMENT_COUNT|SSQ_PRINT_SENSE

/* Fatal error action, with table specified error code */
#define SS_FATAL	SS_FAIL|SSQ_PRINT_SENSE

struct scsi_generic
{
	u_int8_t opcode;
	u_int8_t bytes[11];
};

struct scsi_request_sense
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_test_unit_ready
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[3];
	u_int8_t control;
};

struct scsi_send_diag
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SSD_UOL		0x01
#define	SSD_DOL		0x02
#define	SSD_SELFTEST	0x04
#define	SSD_PF		0x10
	u_int8_t unused[1];
	u_int8_t paramlen[2];
	u_int8_t control;
};

struct scsi_sense
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_inquiry
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SI_EVPD 0x01
	u_int8_t page_code;
	u_int8_t reserved;
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_sense_6
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SMS_DBD				0x08
	u_int8_t page;
#define	SMS_PAGE_CODE 			0x3F
#define SMS_VENDOR_SPECIFIC_PAGE	0x00
#define SMS_DISCONNECT_RECONNECT_PAGE	0x02
#define SMS_CACHE_PAGE			0x08
#define SMS_PERIPHERAL_DEVICE_PAGE	0x09
#define SMS_CONTROL_MODE_PAGE		0x0A
#define SMS_PROTO_SPECIFIC_PAGE		0x19
#define SMS_INFO_EXCEPTIONS_PAGE	0x1C
#define SMS_ALL_PAGES_PAGE		0x3F
#define	SMS_PAGE_CTRL_MASK		0xC0
#define	SMS_PAGE_CTRL_CURRENT 		0x00
#define	SMS_PAGE_CTRL_CHANGEABLE 	0x40
#define	SMS_PAGE_CTRL_DEFAULT 		0x80
#define	SMS_PAGE_CTRL_SAVED 		0xC0
	u_int8_t unused;
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_sense_10
{
	u_int8_t opcode;
	u_int8_t byte2;		/* same bits as small version */
	u_int8_t page; 		/* same bits as small version */
	u_int8_t unused[4];
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_mode_select_6
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SMS_SP	0x01
#define	SMS_PF	0x10
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_mode_select_10
{
	u_int8_t opcode;
	u_int8_t byte2;		/* same bits as small version */
	u_int8_t unused[5];
	u_int8_t length[2];
	u_int8_t control;
};

/*
 * When sending a mode select to a tape drive, the medium type must be 0.
 */
struct scsi_mode_hdr_6
{
	u_int8_t datalen;
	u_int8_t medium_type;
	u_int8_t dev_specific;
	u_int8_t block_descr_len;
};

struct scsi_mode_hdr_10
{
	u_int8_t datalen[2];
	u_int8_t medium_type;
	u_int8_t dev_specific;
	u_int8_t reserved[2];
	u_int8_t block_descr_len[2];
};

struct scsi_mode_block_descr
{
	u_int8_t density_code;
	u_int8_t num_blocks[3];
	u_int8_t reserved;
	u_int8_t block_len[3];
};

struct scsi_log_sense
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SLS_SP				0x01
#define	SLS_PPC				0x02
	u_int8_t page;
#define	SLS_PAGE_CODE 			0x3F
#define	SLS_ALL_PAGES_PAGE		0x00
#define	SLS_OVERRUN_PAGE		0x01
#define	SLS_ERROR_WRITE_PAGE		0x02
#define	SLS_ERROR_READ_PAGE		0x03
#define	SLS_ERROR_READREVERSE_PAGE	0x04
#define	SLS_ERROR_VERIFY_PAGE		0x05
#define	SLS_ERROR_NONMEDIUM_PAGE	0x06
#define	SLS_ERROR_LASTN_PAGE		0x07
#define SLS_SELF_TEST_PAGE		0x10
#define SLS_IE_PAGE			0x2f
#define	SLS_PAGE_CTRL_MASK		0xC0
#define	SLS_PAGE_CTRL_THRESHOLD		0x00
#define	SLS_PAGE_CTRL_CUMULATIVE	0x40
#define	SLS_PAGE_CTRL_THRESH_DEFAULT	0x80
#define	SLS_PAGE_CTRL_CUMUL_DEFAULT	0xC0
	u_int8_t reserved[2];
	u_int8_t paramptr[2];
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_log_select
{
	u_int8_t opcode;
	u_int8_t byte2;
/*	SLS_SP				0x01 */
#define	SLS_PCR				0x02
	u_int8_t page;
/*	SLS_PAGE_CTRL_MASK		0xC0 */
/*	SLS_PAGE_CTRL_THRESHOLD		0x00 */
/*	SLS_PAGE_CTRL_CUMULATIVE	0x40 */
/*	SLS_PAGE_CTRL_THRESH_DEFAULT	0x80 */
/*	SLS_PAGE_CTRL_CUMUL_DEFAULT	0xC0 */
	u_int8_t reserved[4];
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_log_header
{
	u_int8_t page;
	u_int8_t reserved;
	u_int8_t datalen[2];
};

struct scsi_log_param_header {
	u_int8_t param_code[2];
	u_int8_t param_control;
#define	SLP_LP				0x01
#define	SLP_LBIN			0x02
#define	SLP_TMC_MASK			0x0C
#define	SLP_TMC_ALWAYS			0x00
#define	SLP_TMC_EQUAL			0x04
#define	SLP_TMC_NOTEQUAL		0x08
#define	SLP_TMC_GREATER			0x0C
#define	SLP_ETC				0x10
#define	SLP_TSD				0x20
#define	SLP_DS				0x40
#define	SLP_DU				0x80
	u_int8_t param_len;
};

struct scsi_control_page {
	u_int8_t page_code;
	u_int8_t page_length;
	u_int8_t rlec;
#define SCB_RLEC			0x01	/*Report Log Exception Cond*/
	u_int8_t queue_flags;
#define SCP_QUEUE_ALG_MASK		0xF0
#define SCP_QUEUE_ALG_RESTRICTED	0x00
#define SCP_QUEUE_ALG_UNRESTRICTED	0x10
#define SCP_QUEUE_ERR			0x02	/*Queued I/O aborted for CACs*/
#define SCP_QUEUE_DQUE			0x01	/*Queued I/O disabled*/
	u_int8_t eca_and_aen;
#define SCP_EECA			0x80	/*Enable Extended CA*/
#define SCP_RAENP			0x04	/*Ready AEN Permission*/
#define SCP_UAAENP			0x02	/*UA AEN Permission*/
#define SCP_EAENP			0x01	/*Error AEN Permission*/
	u_int8_t reserved;
	u_int8_t aen_holdoff_period[2];
};

struct scsi_cache_page {
	u_int8_t page_code;
#define SCHP_PAGE_SAVABLE		0x80	/* Page is savable */
	u_int8_t page_length;
	u_int8_t cache_flags;
#define SCHP_FLAGS_WCE			0x04	/* Write Cache Enable */
#define SCHP_FLAGS_MF			0x02	/* Multiplication factor */
#define SCHP_FLAGS_RCD			0x01	/* Read Cache Disable */
	u_int8_t rw_cache_policy;
	u_int8_t dis_prefetch[2];
	u_int8_t min_prefetch[2];
	u_int8_t max_prefetch[2];
	u_int8_t max_prefetch_ceil[2];
};

struct scsi_info_exceptions_page {
	u_int8_t page_code;
#define SIEP_PAGE_SAVABLE		0x80	/* Page is savable */
	u_int8_t page_length;
	u_int8_t info_flags;
#define SIEP_FLAGS_PERF			0x80
#define SIEP_FLAGS_EBF			0x20
#define SIEP_FLAGS_EWASC		0x10
#define SIEP_FLAGS_DEXCPT		0x08
#define SIEP_FLAGS_TEST			0x04
#define SIEP_FLAGS_EBACKERR		0x02
#define SIEP_FLAGS_LOGERR		0x01
	u_int8_t mrie;
	u_int8_t interval_timer[4];
	u_int8_t report_count[4];
};

struct scsi_proto_specific_page {
	u_int8_t page_code;
#define SPSP_PAGE_SAVABLE		0x80	/* Page is savable */
	u_int8_t page_length;
	u_int8_t protocol;
#define SPSP_PROTO_FC			0x00
#define SPSP_PROTO_SPI			0x01
#define SPSP_PROTO_SSA			0x02
#define SPSP_PROTO_1394			0x03
#define SPSP_PROTO_RDMA			0x04
#define SPSP_PROTO_ISCSI		0x05
#define SPSP_PROTO_SAS			0x06
#define SPSP_PROTO_ADT			0x07
#define SPSP_PROTO_ATA			0x08
#define SPSP_PROTO_NONE			0x0f
};

struct scsi_reserve
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_release
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t length;
	u_int8_t control;
};

struct scsi_prevent
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused[2];
	u_int8_t how;
	u_int8_t control;
};
#define	PR_PREVENT 0x01
#define PR_ALLOW   0x00

struct scsi_sync_cache
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t begin_lba[4];
	u_int8_t reserved;
	u_int8_t lb_count[2];
	u_int8_t control;
};


struct scsi_changedef
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t unused1;
	u_int8_t how;
	u_int8_t unused[4];
	u_int8_t datalen;
	u_int8_t control;
};

struct scsi_read_buffer
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	RWB_MODE		0x07
#define	RWB_MODE_HDR_DATA	0x00
#define	RWB_MODE_DATA		0x02
#define	RWB_MODE_DOWNLOAD	0x04
#define	RWB_MODE_DOWNLOAD_SAVE	0x05
        u_int8_t buffer_id;
        u_int8_t offset[3];
        u_int8_t length[3];
        u_int8_t control;
};

struct scsi_write_buffer
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t buffer_id;
	u_int8_t offset[3];
	u_int8_t length[3];
	u_int8_t control;
};

struct scsi_rw_6
{
	u_int8_t opcode;
	u_int8_t addr[3];
/* only 5 bits are valid in the MSB address byte */
#define	SRW_TOPADDR	0x1F
	u_int8_t length;
	u_int8_t control;
};

struct scsi_rw_10
{
	u_int8_t opcode;
#define	SRW10_RELADDR	0x01
/* EBP defined for WRITE(10) only */
#define SRW10_EBP	0x04
#define SRW10_FUA	0x08
#define	SRW10_DPO	0x10
	u_int8_t byte2;
	u_int8_t addr[4];
	u_int8_t reserved;
	u_int8_t length[2];
	u_int8_t control;
};

struct scsi_rw_12
{
	u_int8_t opcode;
#define	SRW12_RELADDR	0x01
#define SRW12_FUA	0x08
#define	SRW12_DPO	0x10
	u_int8_t byte2;
	u_int8_t addr[4];
	u_int8_t length[4];
	u_int8_t reserved;
	u_int8_t control;
};

struct scsi_rw_16
{
	u_int8_t opcode;
#define        SRW16_RELADDR   0x01
#define        SRW16_FUA       0x08
#define        SRW16_DPO       0x10
	u_int8_t byte2;
	u_int8_t addr[8];
	u_int8_t length[4];
	u_int8_t reserved;
	u_int8_t control;
};


struct scsi_start_stop_unit
{
	u_int8_t opcode;
	u_int8_t byte2;
#define	SSS_IMMED		0x01
	u_int8_t reserved[2];
	u_int8_t how;
#define	SSS_START		0x01
#define	SSS_LOEJ		0x02
	u_int8_t control;
};

struct ata_pass_12 {
	u_int8_t opcode;
	u_int8_t protocol;
#define AP_MULTI	0xe0
	u_int8_t flags;
#define AP_T_LEN	0x03
#define AP_BB		0x04
#define AP_T_DIR	0x08
#define AP_CK_COND	0x20
#define AP_OFFLINE	0x60
	u_int8_t features;
	u_int8_t sector_count;
	u_int8_t lba_low;
	u_int8_t lba_mid;
	u_int8_t lba_high;
	u_int8_t device;
	u_int8_t command;
	u_int8_t reserved;
	u_int8_t control;
};

struct ata_pass_16 {
	u_int8_t opcode;
	u_int8_t protocol;
#define AP_EXTEND	0x01
	u_int8_t flags;
	u_int8_t features_ext;
	u_int8_t features;
	u_int8_t sector_count_ext;
	u_int8_t sector_count;
	u_int8_t lba_low_ext;
	u_int8_t lba_low;
	u_int8_t lba_mid_ext;
	u_int8_t lba_mid;
	u_int8_t lba_high_ext;
	u_int8_t lba_high;
	u_int8_t device;
	u_int8_t command;
	u_int8_t control;
};

#define SC_SCSI_1 0x01
#define SC_SCSI_2 0x03

/*
 * Opcodes
 */

#define	TEST_UNIT_READY		0x00
#define REQUEST_SENSE		0x03
#define	READ_6			0x08
#define WRITE_6			0x0a
#define INQUIRY			0x12
#define MODE_SELECT_6		0x15
#define MODE_SENSE_6		0x1a
#define START_STOP_UNIT		0x1b
#define START_STOP		0x1b
#define RESERVE      		0x16
#define RELEASE      		0x17
#define	RECEIVE_DIAGNOSTIC	0x1c
#define	SEND_DIAGNOSTIC		0x1d
#define PREVENT_ALLOW		0x1e
#define	READ_CAPACITY		0x25
#define	READ_10			0x28
#define WRITE_10		0x2a
#define POSITION_TO_ELEMENT	0x2b
#define	SYNCHRONIZE_CACHE	0x35
#define	READ_DEFECT_DATA_10	0x37
#define	WRITE_BUFFER            0x3b
#define	READ_BUFFER             0x3c
#define	CHANGE_DEFINITION	0x40
#define	TRIM			0x42
#define	LOG_SELECT		0x4c
#define	LOG_SENSE		0x4d
#define	MODE_SELECT_10		0x55
#define	MODE_SENSE_10		0x5a
#define	ATA_PASS_16		0x85
#define READ_16			0x88
#define WRITE_16		0x8a
#define READ_CAPACITY_16	0x9e
#define SERVICE_ACTION_IN	0x9e
#define REPORT_LUNS		0xa0
#define	ATA_PASS_12		0xa1
#define MOVE_MEDIUM     	0xa5
#define READ_12			0xa8
#define WRITE_12		0xaa
#define READ_ELEMENT_STATUS	0xb8

/*
 * Device Types
 */
#define	T_DIRECT	0x00
#define	T_SEQUENTIAL	0x01
#define	T_PRINTER	0x02
#define	T_PROCESSOR	0x03
#define	T_WORM		0x04
#define	T_CDROM		0x05
#define	T_SCANNER	0x06
#define	T_OPTICAL 	0x07
#define	T_CHANGER	0x08
#define	T_COMM		0x09
#define	T_ASC0		0x0a
#define	T_ASC1		0x0b
#define	T_STORARRAY	0x0c
#define	T_ENCLOSURE	0x0d
#define	T_RBC		0x0e
#define	T_OCRW		0x0f
#define	T_OSD		0x11
#define	T_ADC		0x12
#define	T_NODEVICE	0x1f
#define	T_ANY		0xff	/* Used in Quirk table matches */

#define T_REMOV		1
#define	T_FIXED		0

/*
 * This length is the initial inquiry length used by the probe code, as
 * well as the legnth necessary for scsi_print_inquiry() to function
 * correctly.  If either use requires a different length in the future,
 * the two values should be de-coupled.
 */
#define	SHORT_INQUIRY_LENGTH	36

struct scsi_inquiry_data
{
	u_int8_t device;
#define	SID_TYPE(inq_data) ((inq_data)->device & 0x1f)
#define	SID_QUAL(inq_data) (((inq_data)->device & 0xE0) >> 5)
#define	SID_QUAL_LU_CONNECTED	0x00	/*
					 * The specified peripheral device
					 * type is currently connected to
					 * logical unit.  If the target cannot
					 * determine whether or not a physical
					 * device is currently connected, it
					 * shall also use this peripheral
					 * qualifier when returning the INQUIRY
					 * data.  This peripheral qualifier
					 * does not mean that the device is
					 * ready for access by the initiator.
					 */
#define	SID_QUAL_LU_OFFLINE	0x01	/*
					 * The target is capable of supporting
					 * the specified peripheral device type
					 * on this logical unit; however, the
					 * physical device is not currently
					 * connected to this logical unit.
					 */
#define SID_QUAL_RSVD		0x02
#define	SID_QUAL_BAD_LU		0x03	/*
					 * The target is not capable of
					 * supporting a physical device on
					 * this logical unit. For this
					 * peripheral qualifier the peripheral
					 * device type shall be set to 1Fh to
					 * provide compatibility with previous
					 * versions of SCSI. All other
					 * peripheral device type values are
					 * reserved for this peripheral
					 * qualifier.
					 */
#define	SID_QUAL_IS_VENDOR_UNIQUE(inq_data) ((SID_QUAL(inq_data) & 0x08) != 0)
	u_int8_t dev_qual2;
#define	SID_QUAL2	0x7F
#define	SID_IS_REMOVABLE(inq_data) (((inq_data)->dev_qual2 & 0x80) != 0)
	u_int8_t version;
#define SID_ANSI_REV(inq_data) ((inq_data)->version & 0x07)
#define		SCSI_REV_0		0
#define		SCSI_REV_CCS		1
#define		SCSI_REV_2		2
#define		SCSI_REV_SPC		3
#define		SCSI_REV_SPC2		4
#define		SCSI_REV_SPC3		5

#define SID_ECMA	0x38
#define SID_ISO		0xC0
	u_int8_t response_format;
#define SID_AENC	0x80
#define SID_TrmIOP	0x40
	u_int8_t additional_length;
#define	SID_ADDITIONAL_LENGTH(iqd)					\
	((iqd)->additional_length +					\
	offsetof(struct scsi_inquiry_data, additional_length) + 1)
	u_int8_t reserved;
	u_int8_t spc2_flags;
#define SPC2_SID_MChngr 	0x08
#define SPC2_SID_MultiP 	0x10
#define SPC2_SID_EncServ	0x40
#define SPC2_SID_BQueue		0x80

#define INQ_DATA_TQ_ENABLED(iqd)				\
    ((SID_ANSI_REV(iqd) < SCSI_REV_SPC2)? ((iqd)->flags & SID_CmdQue) :	\
    (((iqd)->flags & SID_CmdQue) && !((iqd)->spc2_flags & SPC2_SID_BQueue)) || \
    (!((iqd)->flags & SID_CmdQue) && ((iqd)->spc2_flags & SPC2_SID_BQueue)))


	u_int8_t flags;
#define	SID_SftRe	0x01
#define	SID_CmdQue	0x02
#define	SID_Linked	0x08
#define	SID_Sync	0x10
#define	SID_WBus16	0x20
#define	SID_WBus32	0x40
#define	SID_RelAdr	0x80
#define SID_VENDOR_SIZE   8
	char	 vendor[SID_VENDOR_SIZE];
#define SID_PRODUCT_SIZE  16
	char	 product[SID_PRODUCT_SIZE];
#define SID_REVISION_SIZE 4
	char	 revision[SID_REVISION_SIZE];
	/*
	 * The following fields were taken from SCSI Primary Commands - 2
	 * (SPC-2) Revision 14, Dated 11 November 1999
	 */
#define	SID_VENDOR_SPECIFIC_0_SIZE	20
	u_int8_t vendor_specific0[SID_VENDOR_SPECIFIC_0_SIZE];
	/*
	 * An extension of SCSI Parallel Specific Values
	 */
#define	SID_SPI_IUS		0x01
#define	SID_SPI_QAS		0x02
#define	SID_SPI_CLOCK_ST	0x00
#define	SID_SPI_CLOCK_DT	0x04
#define	SID_SPI_CLOCK_DT_ST	0x0C
#define	SID_SPI_MASK		0x0F
	u_int8_t spi3data;
	u_int8_t reserved2;
	/*
	 * Version Descriptors, stored 2 byte values.
	 */
	u_int8_t version1[2];
	u_int8_t version2[2];
	u_int8_t version3[2];
	u_int8_t version4[2];
	u_int8_t version5[2];
	u_int8_t version6[2];
	u_int8_t version7[2];
	u_int8_t version8[2];

	u_int8_t reserved3[22];

#define	SID_VENDOR_SPECIFIC_1_SIZE	160
	u_int8_t vendor_specific1[SID_VENDOR_SPECIFIC_1_SIZE];
};

struct scsi_vpd_supported_page_list
{
	u_int8_t device;
	u_int8_t page_code;
#define SVPD_SUPPORTED_PAGE_LIST 0x00
	u_int8_t reserved;
	u_int8_t length;	/* number of VPD entries */
#define SVPD_SUPPORTED_PAGES_SIZE	251
	u_int8_t list[SVPD_SUPPORTED_PAGES_SIZE];
};

struct scsi_vpd_unit_serial_number
{
	u_int8_t device;
	u_int8_t page_code;
#define SVPD_UNIT_SERIAL_NUMBER	0x80
	u_int8_t reserved;
	u_int8_t length; /* serial number length */
#define SVPD_SERIAL_NUM_SIZE 251
	u_int8_t serial_num[SVPD_SERIAL_NUM_SIZE];
};

struct scsi_vpd_unit_devid
{
	u_int8_t device;
	u_int8_t page_code;
#define SVPD_UNIT_DEVID	0x83
	u_int8_t reserved;
	u_int8_t length;
	/* extended by variable array of scsi_vpd_devid_hdr */
};

struct scsi_vpd_devid_hdr {
	u_int8_t pi_code;
#define VPD_DEVID_PI(_f)	(((_f) >> 4) & 0xf0)
#define VPD_DEVID_CODE(_f)	(((_f) >> 0) & 0x0f)
#define VPD_DEVID_CODE_BINARY		0x1
#define VPD_DEVID_CODE_ASCII		0x2
#define VPD_DEVID_CODE_UTF8		0x3
	u_int8_t flags;
#define VPD_DEVID_PIV		0x80
#define VPD_DEVID_ASSOC(_f)	((_f) & 0x30)
#define VPD_DEVID_ASSOC_LU		0x00
#define VPD_DEVID_ASSOC_PORT		0x10
#define VPD_DEVID_ASSOC_TARG		0x20
#define VPD_DEVID_TYPE(_f)	((_f) & 0x0f)
#define VPD_DEVID_TYPE_VENDOR		0x0
#define VPD_DEVID_TYPE_T10		0x1
#define VPD_DEVID_TYPE_EUI64		0x2
#define VPD_DEVID_TYPE_NAA		0x3
#define VPD_DEVID_TYPE_RELATIVE		0x4
#define VPD_DEVID_TYPE_PORT		0x5
#define VPD_DEVID_TYPE_LU		0x6
#define VPD_DEVID_TYPE_MD5		0x7
#define VPD_DEVID_TYPE_NAME		0x8
	u_int8_t reserved;
	u_int8_t len;
};

struct scsi_read_capacity
{
	u_int8_t opcode;
	u_int8_t byte2;
	u_int8_t addr[4];
	u_int8_t unused[3];
	u_int8_t control;
};

struct scsi_read_capacity_16
{
	uint8_t opcode;
#define        SRC16_SERVICE_ACTION    0x10
	uint8_t service_action;
	uint8_t addr[8];
	uint8_t alloc_len[4];
#define        SRC16_PMI               0x01
#define        SRC16_RELADR            0x02
	uint8_t reladr;
	uint8_t control;
};

struct scsi_read_capacity_data
{
	u_int8_t addr[4];
	u_int8_t length[4];
};

struct scsi_read_capacity_data_16
{
	uint8_t addr[8];
	uint8_t length[4];
	u_int8_t p_type_prot;
	u_int8_t logical_per_phys;
	u_int8_t lowest_aligned[2];
	u_int8_t reserved[16];
};

struct scsi_report_luns
{
	uint8_t opcode;
	uint8_t reserved1;
#define	RPL_REPORT_DEFAULT	0x00
#define	RPL_REPORT_WELLKNOWN	0x01
#define	RPL_REPORT_ALL		0x02
	uint8_t select_report;
	uint8_t reserved2[3];
	uint8_t length[4];
	uint8_t reserved3;
	uint8_t control;
};

struct scsi_report_luns_data {
	u_int8_t length[4];	/* length of LUN inventory, in bytes */
	u_int8_t reserved[4];	/* unused */
	/*
	 * LUN inventory- we only support the type zero form for now.
	 */
	struct {
		u_int8_t lundata[8];
	} luns[0];
};
#define	RPL_LUNDATA_PERIPH_BUS_MASK	0x3f
#define	RPL_LUNDATA_FLAT_LUN_MASK	0x3f
#define	RPL_LUNDATA_LUN_TARG_MASK	0x3f
#define	RPL_LUNDATA_LUN_BUS_MASK	0xe0
#define	RPL_LUNDATA_LUN_LUN_MASK	0x1f
#define	RPL_LUNDATA_EXT_LEN_MASK	0x30
#define	RPL_LUNDATA_EXT_EAM_MASK	0x0f
#define	RPL_LUNDATA_EXT_EAM_WK		0x01
#define	RPL_LUNDATA_EXT_EAM_NOT_SPEC	0x0f
#define	RPL_LUNDATA_ATYP_MASK	0xc0	/* MBZ for type 0 lun */
#define	RPL_LUNDATA_ATYP_PERIPH	0x00
#define	RPL_LUNDATA_ATYP_FLAT	0x40
#define	RPL_LUNDATA_ATYP_LUN	0x80
#define	RPL_LUNDATA_ATYP_EXTLUN	0xc0

struct scsi_sense_data
{
	u_int8_t error_code;
#define	SSD_ERRCODE			0x7F
#define		SSD_CURRENT_ERROR	0x70
#define		SSD_DEFERRED_ERROR	0x71
#define	SSD_ERRCODE_VALID	0x80
	u_int8_t segment;
	u_int8_t flags;
#define	SSD_KEY				0x0F
#define		SSD_KEY_NO_SENSE	0x00
#define		SSD_KEY_RECOVERED_ERROR	0x01
#define		SSD_KEY_NOT_READY	0x02
#define		SSD_KEY_MEDIUM_ERROR	0x03
#define		SSD_KEY_HARDWARE_ERROR	0x04
#define		SSD_KEY_ILLEGAL_REQUEST	0x05
#define		SSD_KEY_UNIT_ATTENTION	0x06
#define		SSD_KEY_DATA_PROTECT	0x07
#define		SSD_KEY_BLANK_CHECK	0x08
#define		SSD_KEY_Vendor_Specific	0x09
#define		SSD_KEY_COPY_ABORTED	0x0a
#define		SSD_KEY_ABORTED_COMMAND	0x0b
#define		SSD_KEY_EQUAL		0x0c
#define		SSD_KEY_VOLUME_OVERFLOW	0x0d
#define		SSD_KEY_MISCOMPARE	0x0e
#define		SSD_KEY_RESERVED	0x0f
#define	SSD_ILI		0x20
#define	SSD_EOM		0x40
#define	SSD_FILEMARK	0x80
	u_int8_t info[4];
	u_int8_t extra_len;
	u_int8_t cmd_spec_info[4];
	u_int8_t add_sense_code;
	u_int8_t add_sense_code_qual;
	u_int8_t fru;
	u_int8_t sense_key_spec[3];
#define	SSD_SCS_VALID		0x80
#define SSD_FIELDPTR_CMD	0x40
#define SSD_BITPTR_VALID	0x08
#define SSD_BITPTR_VALUE	0x07
#define SSD_MIN_SIZE 18
	u_int8_t extra_bytes[14];
#define SSD_FULL_SIZE sizeof(struct scsi_sense_data)
};

struct scsi_mode_header_6
{
	u_int8_t data_length;	/* Sense data length */
	u_int8_t medium_type;
	u_int8_t dev_spec;
	u_int8_t blk_desc_len;
};

struct scsi_mode_header_10
{
	u_int8_t data_length[2];/* Sense data length */
	u_int8_t medium_type;
	u_int8_t dev_spec;
	u_int8_t unused[2];
	u_int8_t blk_desc_len[2];
};

struct scsi_mode_page_header
{
	u_int8_t page_code;
	u_int8_t page_length;
};

struct scsi_mode_blk_desc
{
	u_int8_t density;
	u_int8_t nblocks[3];
	u_int8_t reserved;
	u_int8_t blklen[3];
};

#define	SCSI_DEFAULT_DENSITY	0x00	/* use 'default' density */
#define	SCSI_SAME_DENSITY	0x7f	/* use 'same' density- >= SCSI-2 only */


/*
 * Status Byte
 */
#define	SCSI_STATUS_OK			0x00
#define	SCSI_STATUS_CHECK_COND		0x02
#define	SCSI_STATUS_COND_MET		0x04
#define	SCSI_STATUS_BUSY		0x08
#define SCSI_STATUS_INTERMED		0x10
#define SCSI_STATUS_INTERMED_COND_MET	0x14
#define SCSI_STATUS_RESERV_CONFLICT	0x18
#define SCSI_STATUS_CMD_TERMINATED	0x22	/* Obsolete in SAM-2 */
#define SCSI_STATUS_QUEUE_FULL		0x28
#define SCSI_STATUS_ACA_ACTIVE		0x30
#define SCSI_STATUS_TASK_ABORTED	0x40

struct scsi_inquiry_pattern {
	u_int8_t   type;
	u_int8_t   media_type;
#define	SIP_MEDIA_REMOVABLE	0x01
#define	SIP_MEDIA_FIXED		0x02
	const char *vendor;
	const char *product;
	const char *revision;
};

struct scsi_static_inquiry_pattern {
	u_int8_t   type;
	u_int8_t   media_type;
	char       vendor[SID_VENDOR_SIZE+1];
	char       product[SID_PRODUCT_SIZE+1];
	char       revision[SID_REVISION_SIZE+1];
};

struct scsi_sense_quirk_entry {
	struct scsi_inquiry_pattern	inq_pat;
	int				num_sense_keys;
	int				num_ascs;
	struct sense_key_table_entry	*sense_key_info;
	struct asc_table_entry		*asc_info;
};

struct sense_key_table_entry {
	u_int8_t    sense_key;
	u_int32_t   action;
	const char *desc;
};

struct asc_table_entry {
	u_int8_t    asc;
	u_int8_t    ascq;
	u_int32_t   action;
	const char *desc;
};

struct op_table_entry {
	u_int8_t    opcode;
	u_int32_t   opmask;
	const char  *desc;
};

struct scsi_op_quirk_entry {
	struct scsi_inquiry_pattern	inq_pat;
	int				num_ops;
	struct op_table_entry		*op_table;
};

typedef enum {
	SSS_FLAG_NONE		= 0x00,
	SSS_FLAG_PRINT_COMMAND	= 0x01
} scsi_sense_string_flags;

typedef union scsi_cdb {
	struct scsi_generic		generic;
	struct scsi_sense		sense;
	struct scsi_test_unit_ready	test_unit_ready;
	struct scsi_send_diag		send_diag;
	struct scsi_inquiry		inquiry;
	struct scsi_mode_sense_6	mode_sense_6;
	struct scsi_mode_sense_10	mode_sense_10;
	struct scsi_mode_select_6	mode_select_6;
	struct scsi_mode_select_10	mode_select_10;
	struct scsi_log_sense		log_sense;
	struct scsi_log_select		log_select;
	struct scsi_reserve		reserve;
	struct scsi_release		release;
	struct scsi_prevent		prevent;
	struct scsi_sync_cache		sync_cache;
	struct scsi_changedef		changedef;
	struct scsi_read_buffer		read_buffer;
	struct scsi_write_buffer	write_buffer;
	struct scsi_rw_6		rw_6;
	struct scsi_rw_10		rw_10;
	struct scsi_rw_12		rw_12;
	struct scsi_rw_16		rw_16;
	struct scsi_start_stop_unit	start_stop_unit;
	struct ata_pass_12 		ata_pass_12;
	struct ata_pass_16 		ata_pass_16;
	struct scsi_read_capacity	read_capacity;
	struct scsi_read_capacity_16	read_capacity_16;
	struct scsi_report_luns		report_luns;
} *scsi_cdb_t;

typedef union scsi_data {
	struct scsi_mode_hdr_6			mode_hdr_6;
	struct scsi_mode_hdr_10			mode_hdr_10;
	struct scsi_mode_block_descr		mode_block_descr;
	struct scsi_log_header			log_header;
	struct scsi_log_param_header		log_param_header;
	struct scsi_control_page		control_page;
	struct scsi_cache_page			cache_page;
	struct scsi_info_exceptions_page	info_exceptions_page;
	struct scsi_proto_specific_page		proto_specific_page;
	struct scsi_inquiry_data		inquiry_data;
	struct scsi_vpd_supported_page_list	vpd_supported_page_list;
	struct scsi_vpd_unit_serial_number	vpd_unit_serial_number;
	struct scsi_vpd_unit_devid		vpd_unit_devid;
	struct scsi_read_capacity_data		read_capacity_data;
	struct scsi_read_capacity_data_16	read_capacity_data_16;
	struct scsi_report_luns_data		report_luns_data;
	struct scsi_sense_data			sense_data;
	struct scsi_mode_header_6		mode_header_6;
	struct scsi_mode_header_10		mode_header_10;
	struct scsi_mode_page_header		mode_page_header;
	struct scsi_mode_blk_desc		mode_blk_desc;
	struct scsi_inquiry_pattern		inquiry_pattern;
	struct scsi_static_inquiry_pattern	static_inquiry_pattern;
} *scsi_data_t;

struct ccb_scsiio;
struct cam_periph;
union  ccb;
#ifndef _KERNEL
struct cam_device;
#endif

struct sbuf;

__BEGIN_DECLS
void scsi_sense_desc(int sense_key, int asc, int ascq,
		     struct scsi_inquiry_data *inq_data,
		     const char **sense_key_desc, const char **asc_desc);
scsi_sense_action scsi_error_action(struct ccb_scsiio* csio,
				    struct scsi_inquiry_data *inq_data,
				    u_int32_t sense_flags);
const char *	scsi_status_string(struct ccb_scsiio *csio);
#ifdef _KERNEL
int		scsi_command_string(struct ccb_scsiio *csio, struct sbuf *sb);
int		scsi_sense_sbuf(struct ccb_scsiio *csio, struct sbuf *sb,
				scsi_sense_string_flags flags);
char *		scsi_sense_string(struct ccb_scsiio *csio,
				  char *str, int str_len);
void		scsi_sense_print(struct ccb_scsiio *csio);
int		scsi_interpret_sense(union ccb *ccb,
				     u_int32_t sense_flags,
				     u_int32_t *relsim_flags,
				     u_int32_t *reduction,
				     u_int32_t *timeout,
				     scsi_sense_action error_action);
#else
int		scsi_command_string(struct cam_device *device,
				    struct ccb_scsiio *csio, struct sbuf *sb);
int		scsi_sense_sbuf(struct cam_device *device,
				struct ccb_scsiio *csio, struct sbuf *sb,
				scsi_sense_string_flags flags);
char *		scsi_sense_string(struct cam_device *device,
				  struct ccb_scsiio *csio,
				  char *str, int str_len);
void		scsi_sense_print(struct cam_device *device,
				 struct ccb_scsiio *csio, FILE *ofile);
int		scsi_interpret_sense(struct cam_device *device,
				     union ccb *ccb,
				     u_int32_t sense_flags,
				     u_int32_t *relsim_flags,
				     u_int32_t *reduction,
				     u_int32_t *timeout,
				     scsi_sense_action error_action);
#endif /* _KERNEL */

#define	SF_RETRY_UA	0x01
#define SF_NO_PRINT	0x02
#define SF_QUIET_IR	0x04	/* Be quiet about Illegal Request reponses */
#define SF_PRINT_ALWAYS	0x08


const char *	scsi_op_desc(u_int16_t opcode,
			     struct scsi_inquiry_data *inq_data);
char *		scsi_cdb_string(u_int8_t *cdb_ptr, char *cdb_string,
				size_t len);

void		scsi_print_inquiry(struct scsi_inquiry_data *inq_data);

u_int		scsi_calc_syncsrate(u_int period_factor);
u_int		scsi_calc_syncparam(u_int period);

void		scsi_test_unit_ready(struct ccb_scsiio *csio, u_int32_t retries,
				     void (*cbfcnp)(struct cam_periph *,
						    union ccb *),
				     u_int8_t tag_action,
				     u_int8_t sense_len, u_int32_t timeout);

void		scsi_request_sense(struct ccb_scsiio *csio, u_int32_t retries,
				   void (*cbfcnp)(struct cam_periph *,
						  union ccb *),
				   void *data_ptr, u_int8_t dxfer_len,
				   u_int8_t tag_action, u_int8_t sense_len,
				   u_int32_t timeout);

#ifndef CAM_NO_SCSI_INQUIRY	/* hack for cdparanoia */
void		scsi_inquiry(struct ccb_scsiio *csio, u_int32_t retries,
			     void (*cbfcnp)(struct cam_periph *, union ccb *),
			     u_int8_t tag_action, u_int8_t *inq_buf,
			     u_int32_t inq_len, int evpd, u_int8_t page_code,
			     u_int8_t sense_len, u_int32_t timeout);
#endif

void		scsi_mode_sense(struct ccb_scsiio *csio, u_int32_t retries,
				void (*cbfcnp)(struct cam_periph *,
					       union ccb *),
				u_int8_t tag_action, int dbd,
				u_int8_t page_code, u_int8_t page,
				u_int8_t *param_buf, u_int32_t param_len,
				u_int8_t sense_len, u_int32_t timeout);
void		scsi_mode_sense_len(struct ccb_scsiio *csio, u_int32_t retries,
				void (*cbfcnp)(struct cam_periph *,
						union ccb *),
				u_int8_t tag_action, int dbd,
				u_int8_t page_code, u_int8_t page,
				u_int8_t *param_buf, u_int32_t param_len,
				int minimum_cmd_size, u_int8_t sense_len,
				u_int32_t timeout);

void		scsi_mode_select(struct ccb_scsiio *csio, u_int32_t retries,
				 void (*cbfcnp)(struct cam_periph *,
						union ccb *),
				 u_int8_t tag_action, int scsi_page_fmt,
				 int save_pages, u_int8_t *param_buf,
				 u_int32_t param_len, u_int8_t sense_len,
				 u_int32_t timeout);

void		scsi_mode_select_len(struct ccb_scsiio *csio, u_int32_t retries,
				void (*cbfcnp)(struct cam_periph *,
						union ccb *),
				u_int8_t tag_action, int scsi_page_fmt,
				int save_pages, u_int8_t *param_buf,
				u_int32_t param_len, int minimum_cmd_size,
				u_int8_t sense_len, u_int32_t timeout);

void		scsi_log_sense(struct ccb_scsiio *csio, u_int32_t retries,
			       void (*cbfcnp)(struct cam_periph *, union ccb *),
			       u_int8_t tag_action, u_int8_t page_code,
			       u_int8_t page, int save_pages, int ppc,
			       u_int32_t paramptr, u_int8_t *param_buf,
			       u_int32_t param_len, u_int8_t sense_len,
			       u_int32_t timeout);

void		scsi_log_select(struct ccb_scsiio *csio, u_int32_t retries,
				void (*cbfcnp)(struct cam_periph *,
				union ccb *), u_int8_t tag_action,
				u_int8_t page_code, int save_pages,
				int pc_reset, u_int8_t *param_buf,
				u_int32_t param_len, u_int8_t sense_len,
				u_int32_t timeout);

void		scsi_prevent(struct ccb_scsiio *csio, u_int32_t retries,
			     void (*cbfcnp)(struct cam_periph *, union ccb *),
			     u_int8_t tag_action, u_int8_t action,
			     u_int8_t sense_len, u_int32_t timeout);

void		scsi_read_capacity(struct ccb_scsiio *csio, u_int32_t retries,
				   void (*cbfcnp)(struct cam_periph *,
				   union ccb *), u_int8_t tag_action,
				   struct scsi_read_capacity_data *,
				   u_int8_t sense_len, u_int32_t timeout);
void		scsi_read_capacity_16(struct ccb_scsiio *csio, uint32_t retries,
				    void (*cbfcnp)(struct cam_periph *,
				    union ccb *), uint8_t tag_action,
				    uint64_t lba, int reladr, int pmi,
				    struct scsi_read_capacity_data_16
				    *rcap_buf, uint8_t sense_len,
				    uint32_t timeout);

void		scsi_report_luns(struct ccb_scsiio *csio, u_int32_t retries,
				 void (*cbfcnp)(struct cam_periph *,
				 union ccb *), u_int8_t tag_action,
				 u_int8_t select_report,
				 struct scsi_report_luns_data *rpl_buf,
				 u_int32_t alloc_len, u_int8_t sense_len,
				 u_int32_t timeout);

void		scsi_synchronize_cache(struct ccb_scsiio *csio,
				       u_int32_t retries,
				       void (*cbfcnp)(struct cam_periph *,
				       union ccb *), u_int8_t tag_action,
				       u_int32_t begin_lba, u_int16_t lb_count,
				       u_int8_t sense_len, u_int32_t timeout);

void scsi_read_write(struct ccb_scsiio *csio, u_int32_t retries,
		     void (*cbfcnp)(struct cam_periph *, union ccb *),
		     u_int8_t tag_action, int readop, u_int8_t byte2,
		     int minimum_cmd_size, u_int64_t lba,
		     u_int32_t block_count, u_int8_t *data_ptr,
		     u_int32_t dxfer_len, u_int8_t sense_len,
		     u_int32_t timeout);

void scsi_start_stop(struct ccb_scsiio *csio, u_int32_t retries,
		     void (*cbfcnp)(struct cam_periph *, union ccb *),
		     u_int8_t tag_action, int start, int load_eject,
		     int immediate, u_int8_t sense_len, u_int32_t timeout);

int		scsi_inquiry_match(caddr_t inqbuffer, caddr_t table_entry);
int		scsi_static_inquiry_match(caddr_t inqbuffer,
					  caddr_t table_entry);

static __inline void
scsi_extract_sense(struct scsi_sense_data *sense, int *error_code,
		   int *sense_key, int *asc, int *ascq)
{
	*error_code = sense->error_code & SSD_ERRCODE;
	*sense_key = sense->flags & SSD_KEY;
	*asc = (sense->extra_len >= 5) ? sense->add_sense_code : 0;
	*ascq = (sense->extra_len >= 6) ? sense->add_sense_code_qual : 0;
}

static __inline void
scsi_ulto2b(u_int32_t val, u_int8_t *bytes)
{

	bytes[0] = (val >> 8) & 0xff;
	bytes[1] = val & 0xff;
}

static __inline void
scsi_ulto3b(u_int32_t val, u_int8_t *bytes)
{

	bytes[0] = (val >> 16) & 0xff;
	bytes[1] = (val >> 8) & 0xff;
	bytes[2] = val & 0xff;
}

static __inline void
scsi_ulto4b(u_int32_t val, u_int8_t *bytes)
{

	bytes[0] = (val >> 24) & 0xff;
	bytes[1] = (val >> 16) & 0xff;
	bytes[2] = (val >> 8) & 0xff;
	bytes[3] = val & 0xff;
}

static __inline void
scsi_u64to8b(u_int64_t val, u_int8_t *bytes)
{
	bytes[0] = (val >> 56) & 0xff;
	bytes[1] = (val >> 48) & 0xff;
	bytes[2] = (val >> 40) & 0xff;
	bytes[3] = (val >> 32) & 0xff;
	bytes[4] = (val >> 24) & 0xff;
	bytes[5] = (val >> 16) & 0xff;
	bytes[6] = (val >> 8) & 0xff;
	bytes[7] = val & 0xff;
}

static __inline u_int32_t
scsi_2btoul(u_int8_t *bytes)
{
	u_int32_t rv;

	rv = (bytes[0] << 8) |
	     bytes[1];
	return (rv);
}

static __always_inline uint64_t
scsi_8btou64(uint8_t *bytes)
{
	uint64_t rv;

	rv = (((uint64_t)bytes[0]) << 56) |
	     (((uint64_t)bytes[1]) << 48) |
	     (((uint64_t)bytes[2]) << 40) |
	     (((uint64_t)bytes[3]) << 32) |
	     (((uint64_t)bytes[4]) << 24) |
	     (((uint64_t)bytes[5]) << 16) |
	     (((uint64_t)bytes[6]) << 8) |
	     bytes[7];
	return (rv);
}

static __inline u_int32_t
scsi_3btoul(u_int8_t *bytes)
{
	u_int32_t rv;

	rv = (bytes[0] << 16) |
	     (bytes[1] << 8) |
	     bytes[2];
	return (rv);
}

static __inline int32_t
scsi_3btol(u_int8_t *bytes)
{
	u_int32_t rc = scsi_3btoul(bytes);

	if (rc & 0x00800000)
		rc |= 0xff000000;

	return (int32_t) rc;
}

static __inline u_int32_t
scsi_4btoul(u_int8_t *bytes)
{
	u_int32_t rv;

	rv = (bytes[0] << 24) |
	     (bytes[1] << 16) |
	     (bytes[2] << 8) |
	     bytes[3];
	return (rv);
}

/*
 * Given the pointer to a returned mode sense buffer, return a pointer to
 * the start of the first mode page.
 */
static __inline void *
find_mode_page_6(struct scsi_mode_header_6 *mode_header)
{
	void *page_start;

	page_start = (void *)((u_int8_t *)&mode_header[1] +
			      mode_header->blk_desc_len);

	return(page_start);
}

static __inline void *
find_mode_page_10(struct scsi_mode_header_10 *mode_header)
{
	void *page_start;

	page_start = (void *)((u_int8_t *)&mode_header[1] +
			       scsi_2btoul(mode_header->blk_desc_len));

	return(page_start);
}

__END_DECLS

#endif /*_SCSI_SCSI_ALL_H*/