scgio.h

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	Ucbit	vu_56	  : 1;	/* vendor unique (byte 5 bit 6) */
	Ucbit	vu_57	  : 1;	/* vendor unique (byte 5 bit 7) */
};

#else	/* Motorola byteorder */

struct	scsi_g0cdb {		/* scsi group 0 command description block */
	u_char	cmd;		/* command code */
	Ucbit	lun	  : 3;	/* logical unit number */
	Ucbit	high_addr : 5;	/* high part of block address */
	u_char	mid_addr;	/* middle part of block address */
	u_char	low_addr;	/* low part of block address */
	u_char	count;		/* transfer length */
	Ucbit	vu_57	  : 1;	/* vendor unique (byte 5 bit 7) */
	Ucbit	vu_56	  : 1;	/* vendor unique (byte 5 bit 6) */
	Ucbit	rsvd	  : 4;	/* reserved */
	Ucbit	fr	  : 1;	/* flag request (interrupt at completion) */
	Ucbit	link	  : 1;	/* link (another command follows) */
};
#endif

#if	defined(_BIT_FIELDS_LTOH)	/* Intel byteorder */

struct	scsi_g1cdb {		/* scsi group 1 command description block */
	u_char	cmd;		/* command code */
	Ucbit	reladr	  : 1;	/* address is relative */
	Ucbit	res	  : 4;	/* reserved bits 1-4 of byte 1 */
	Ucbit	lun	  : 3;	/* logical unit number */
	u_char	addr[4];	/* logical block address */
	u_char	res6;		/* reserved byte 6 */
	u_char	count[2];	/* transfer length */
	Ucbit	link	  : 1;	/* link (another command follows) */
	Ucbit	fr	  : 1;	/* flag request (interrupt at completion) */
	Ucbit	rsvd	  : 4;	/* reserved */
	Ucbit	vu_96	  : 1;	/* vendor unique (byte 5 bit 6) */
	Ucbit	vu_97	  : 1;	/* vendor unique (byte 5 bit 7) */
};

#else	/* Motorola byteorder */

struct	scsi_g1cdb {		/* scsi group 1 command description block */
	u_char	cmd;		/* command code */
	Ucbit	lun	  : 3;	/* logical unit number */
	Ucbit	res	  : 4;	/* reserved bits 1-4 of byte 1 */
	Ucbit	reladr	  : 1;	/* address is relative */
	u_char	addr[4];	/* logical block address */
	u_char	res6;		/* reserved byte 6 */
	u_char	count[2];	/* transfer length */
	Ucbit	vu_97	  : 1;	/* vendor unique (byte 5 bit 7) */
	Ucbit	vu_96	  : 1;	/* vendor unique (byte 5 bit 6) */
	Ucbit	rsvd	  : 4;	/* reserved */
	Ucbit	fr	  : 1;	/* flag request (interrupt at completion) */
	Ucbit	link	  : 1;	/* link (another command follows) */
};
#endif

#if	defined(_BIT_FIELDS_LTOH)	/* Intel byteorder */

struct	scsi_g5cdb {		/* scsi group 5 command description block */
	u_char	cmd;		/* command code */
	Ucbit	reladr	  : 1;	/* address is relative */
	Ucbit	res	  : 4;	/* reserved bits 1-4 of byte 1 */
	Ucbit	lun	  : 3;	/* logical unit number */
	u_char	addr[4];	/* logical block address */
	u_char	count[4];	/* transfer length */
	u_char	res10;		/* reserved byte 10 */
	Ucbit	link	  : 1;	/* link (another command follows) */
	Ucbit	fr	  : 1;	/* flag request (interrupt at completion) */
	Ucbit	rsvd	  : 4;	/* reserved */
	Ucbit	vu_B6	  : 1;	/* vendor unique (byte B bit 6) */
	Ucbit	vu_B7	  : 1;	/* vendor unique (byte B bit 7) */
};

#else	/* Motorola byteorder */

struct	scsi_g5cdb {		/* scsi group 5 command description block */
	u_char	cmd;		/* command code */
	Ucbit	lun	  : 3;	/* logical unit number */
	Ucbit	res	  : 4;	/* reserved bits 1-4 of byte 1 */
	Ucbit	reladr	  : 1;	/* address is relative */
	u_char	addr[4];	/* logical block address */
	u_char	count[4];	/* transfer length */
	u_char	res10;		/* reserved byte 10 */
	Ucbit	vu_B7	  : 1;	/* vendor unique (byte B bit 7) */
	Ucbit	vu_B6	  : 1;	/* vendor unique (byte B bit 6) */
	Ucbit	rsvd	  : 4;	/* reserved */
	Ucbit	fr	  : 1;	/* flag request (interrupt at completion) */
	Ucbit	link	  : 1;	/* link (another command follows) */
};
#endif

#define	SC_G0_CDBLEN	6	/* Len of Group 0 commands */
#define	SC_G1_CDBLEN	10	/* Len of Group 1 commands */
#define	SC_G5_CDBLEN	12	/* Len of Group 5 commands */

#define	SCG_MAX_CMD	24	/* 24 bytes max. size is supported */
#define	SCG_MAX_STATUS	3	/* XXX (sollte 4 allign.) Mamimum Status Len */
#define	SCG_MAX_SENSE	32	/* Mamimum Sense Len for auto Req. Sense */

#define	DEF_SENSE_LEN	16	/* Default Sense Len */
#define	CCS_SENSE_LEN	18	/* Sense Len for CCS compatible devices */

struct	scg_cmd {
	caddr_t	addr;			/* Address of data in user space */
	int	size;			/* DMA count for data transfer */
	int	flags;			/* see below for definition */
	int	cdb_len;		/* Size of SCSI command in bytes */
					/* NOTE: rel 4 uses this field only */
					/* with commands not in group 1 or 2*/
	int	sense_len;		/* for intr() if -1 don't get sense */
	int	timeout;		/* timeout in seconds */
					/* NOTE: actual resolution depends */
					/* on driver implementation */
	int	kdebug;			/* driver kernel debug level */
	int	resid;			/* Bytes not transfered */
	int	error;			/* Error code from scgintr() */
	int	ux_errno;		/* UNIX error code */
#ifdef	comment
XXX	struct	scsi_status scb; ???	/* Status returnd by command */
#endif
	union {
		struct	scsi_status Scb;/* Status returnd by command */
		u_char	cmd_scb[SCG_MAX_STATUS];
	} u_scb;
#define	scb	u_scb.Scb
#ifdef	comment
XXX	struct	scsi_sense sense; ???	/* Sense bytes from command */
#endif
	union {
		struct	scsi_sense Sense;/* Sense bytes from command */
		u_char	cmd_sense[SCG_MAX_SENSE];
	} u_sense;
#define	sense	u_sense.Sense
	int	sense_count;		/* Number of bytes valid in sense */
	int	target;			/* SCSI target id */
	union {				/* SCSI command descriptor block */
		struct	scsi_g0cdb g0_cdb;
		struct	scsi_g1cdb g1_cdb;
		struct	scsi_g5cdb g5_cdb;
		u_char	cmd_cdb[SCG_MAX_CMD];
	} cdb;				/* 24 bytes max. size is supported */
};

#define	dma_read	flags		/* 1 if DMA to Sun, 0 otherwise */

/*
 * definition for flags field in scg_cmd struct
 */
#define	SCG_RECV_DATA	0x0001		/* DMA direction to Sun */
#define	SCG_DISRE_ENA	0x0002		/* enable disconnect/reconnect */
#define	SCG_SILENT	0x0004		/* be silent on errors */
#define	SCG_CMD_RETRY	0x0008		/* enable retries */
#define	SCG_NOPARITY	0x0010		/* disable parity for this command */

/*
 * definition for error field in scg_cmd struct
 *
 * The codes refer to SCSI general errors, not to device
 * specific errors.  Device specific errors are discovered
 * by checking the sense data.
 * The distinction between retryable and fatal is somewhat ad hoc.
 */
#define SCG_NO_ERROR	0		/* cdb transported without error */
#define SCG_RETRYABLE	1		/* any other case */
#define SCG_FATAL	2		/* could not select target */
#define SCG_TIMEOUT	3		/* driver timed out */

#define	g0_cdbaddr(cdb, a)	((cdb)->high_addr = (a) >> 16,\
				 (cdb)->mid_addr = ((a) >> 8) & 0xFF,\
				 (cdb)->low_addr = (a) & 0xFF)

#define	g1_cdbaddr(cdb, a)	((cdb)->addr[0] = (a) >> 24,\
				 (cdb)->addr[1] = ((a) >> 16)& 0xFF,\
				 (cdb)->addr[2] = ((a) >> 8) & 0xFF,\
				 (cdb)->addr[3] = (a) & 0xFF)

#define g5_cdbaddr(cdb, a)	g1_cdbaddr(cdb, a)

#define	g0_cdblen(cdb, len)	((cdb)->count = (len))

#define	g1_cdblen(cdb, len)	((cdb)->count[0] = ((len) >> 8) & 0xFF,\
				 (cdb)->count[1] = (len) & 0xFF)

#define g5_cdblen(cdb, len)	((cdb)->count[0] = (len) >> 24L,\
				 (cdb)->count[1] = ((len) >> 16L)& 0xFF,\
				 (cdb)->count[2] = ((len) >> 8L) & 0xFF,\
				 (cdb)->count[3] = (len) & 0xFF)

#define	i_to_long(a, i)		(((u_char *)(a))[0] = ((i) >> 24)& 0xFF,\
				 ((u_char *)(a))[1] = ((i) >> 16)& 0xFF,\
				 ((u_char *)(a))[2] = ((i) >> 8) & 0xFF,\
				 ((u_char *)(a))[3] = (i) & 0xFF)

#define	i_to_3_byte(a, i)	(((u_char *)(a))[0] = ((i) >> 16)& 0xFF,\
				 ((u_char *)(a))[1] = ((i) >> 8) & 0xFF,\
				 ((u_char *)(a))[2] = (i) & 0xFF)

#define	i_to_4_byte(a, i)	(((u_char *)(a))[0] = ((i) >> 24)& 0xFF,\
				 ((u_char *)(a))[1] = ((i) >> 16)& 0xFF,\
				 ((u_char *)(a))[2] = ((i) >> 8) & 0xFF,\
				 ((u_char *)(a))[3] = (i) & 0xFF)

#define	i_to_short(a, i)	(((u_char *)(a))[0] = ((i) >> 8) & 0xFF,\
				 ((u_char *)(a))[1] = (i) & 0xFF)

#define	a_to_u_short(a)	((unsigned short) \
			((((unsigned char*) a)[1]       & 0xFF) | \
			 (((unsigned char*) a)[0] << 8  & 0xFF00)))

#define	a_to_3_byte(a)	((unsigned long) \
			((((unsigned char*) a)[2]       & 0xFF) | \
			 (((unsigned char*) a)[1] << 8  & 0xFF00) | \
			 (((unsigned char*) a)[0] << 16 & 0xFF0000)))

#ifdef	__STDC__
#define	a_to_u_long(a)	((unsigned long) \
			((((unsigned char*) a)[3]       & 0xFF) | \
			 (((unsigned char*) a)[2] << 8  & 0xFF00) | \
			 (((unsigned char*) a)[1] << 16 & 0xFF0000) | \
			 (((unsigned char*) a)[0] << 24 & 0xFF000000UL)))
#else
#define	a_to_u_long(a)	((unsigned long) \
			((((unsigned char*) a)[3]       & 0xFF) | \
			 (((unsigned char*) a)[2] << 8  & 0xFF00) | \
			 (((unsigned char*) a)[1] << 16 & 0xFF0000) | \
			 (((unsigned char*) a)[0] << 24 & 0xFF000000)))
#endif


/* Peripheral Device Type */

#define	SC_DASD			0x00
#define	SC_SEQD			0x01
#define	SC_PRTD			0x02 
#define	SC_PROCD		0x03 
#define	SC_OPTD			0x04
#define	SC_ROMD			0x05
#define	SC_SCAN			0x06
#define	SC_OMEM			0x07
#define	SC_JUKE			0x08
#define	SC_COMM			0x09
#define	SC_NOTPR		0x7F

#if HAVE_SYS_IOCCOM_H
#include <sys/ioccom.h>
#endif
#if	defined(__STDC__)
#define	SCGIOCMD	_IOWR('G', 1, struct scg_cmd)	/* do a SCSI cmd   */
#define	SCGIORESET	_IO('G', 2)			/* reset SCSI bus  */
#define	SCGIOGDISRE	_IOR('G', 4, int)		/* get sc disre Val*/
#define	SCGIOSDISRE	_IOW('G', 5, int)		/* set sc disre Val*/
#define	SCGIOIDBG	_IO('G', 100)			/* Inc Debug Val   */
#define	SCGIODDBG	_IO('G', 101)			/* Dec Debug Val   */
#define	SCGIOGDBG	_IOR('G', 102, int)		/* get Debug Val   */
#define	SCGIOSDBG	_IOW('G', 103, int)		/* set Debug Val   */
#define	SCIOGDBG	_IOR('G', 104, int)		/* get sc Debug Val*/
#define	SCIOSDBG	_IOW('G', 105, int)		/* set sc Debug Val*/
#else
#define	SCGIOCMD	_IOWR(G, 1, struct scg_cmd)	/* do a SCSI cmd   */
#define	SCGIORESET	_IO(G, 2)			/* reset SCSI bus  */
#define	SCGIOGDISRE	_IOR(G, 4, int)			/* get sc disre Val*/
#define	SCGIOSDISRE	_IOW(G, 5, int)			/* set sc disre Val*/
#define	SCGIOIDBG	_IO(G, 100)			/* Inc Debug Val   */
#define	SCGIODDBG	_IO(G, 101)			/* Dec Debug Val   */
#define	SCGIOGDBG	_IOR(G, 102, int)		/* get Debug Val   */
#define	SCGIOSDBG	_IOW(G, 103, int)		/* set Debug Val   */
#define	SCIOGDBG	_IOR(G, 104, int)		/* get sc Debug Val*/
#define	SCIOSDBG	_IOW(G, 105, int)		/* set sc Debug Val*/
#endif

#define	SCGIO_CMD	SCGIOCMD	/* backward ccompatibility */

#endif	/* _SCGIO_H */