/*
 *	Definitions for SMD-type disk drives and drivers.
 *	This file is used for RM02/03/05, RP04/05/06,
 *	and Diva controllers.
 */

#if	NXP > 0
/*
 *	Structures used in the xp driver
 *	to describe drives, controllers, and topology 
 */
struct xp_controller {
	struct	buf *xp_actf;		/* pointer to next active xputab */
	struct	buf *xp_actl;		/* pointer to last active xputab */
	struct	hpdevice *xp_addr;	/* csr address */
	char	xp_flags;		/* controller-type flags */
	char	xp_active;		/* nonzero if doing a transfer */
};

struct xp_drive {
	struct	xp_controller *xp_ctlr; /* controller to which slave attached */
	char	xp_type;		/* drive type */
	char	xp_unit;		/* slave number */
	struct	size *xp_sizes;		/* pointer to sizes array */
	char	xp_nsect;
	char	xp_ntrack;
	int	xp_nspc;		/* sectors/cylinder */
	int	xp_cc;			/* current cylinder, for RM's */
#ifdef	BADSECT
	int	xp_ncyl;		/* cylinders per pack */
#endif
};

/*
 * bits in xp_flags:
 */
#define	XP_NOCC		1		/* has no current cylinder register */
#define	XP_RH70		2		/* uses 22-bit addressing */
#define	XP_NOSEARCH	4		/* won't do search commands */

/*
 * Defines for disk drive type registers
 */
#define	RP	022		/* RP04/5/6 */
#define	RM03	024		/* RM03 */
#define	RM02	025		/* RM02 */
#define	RM05	027		/* RM05 */
/*
 * These two drive types are dummies because the actual numbers conflict
 * with DEC controllers.  The RM5X actually reads as 25; the Diva Comp VI
 * reads as 22.  Xp_drive must be patched at boot time or initialized.
 */
#define	RM5X	076		/* Ampex 815 cyl. RM05 with Emulex Controller */
#define	DV	077		/* Diva Comp VI Controller */

#define	HP_SECT		22
#define	HP_TRAC		19
#define	RP06_CYL	815
#define	RP04_CYL	411
#define	RM_SECT		32
#define	RM_TRAC		5
#define	RM_CYL		823
#define	RM5_SECT	32
#define	RM5_TRAC	19
#define	RM5_CYL		823
#define	RM5X_CYL	815
#define	DV_SECT		33
#define	DV_TRAC		19
#define	DV_CYL		815

/*
 *	SI Eagle
 */
#define	SI_SECT		48
#define	SI_TRAC		20
#define	SI_CYL		842
#define	SI_SN_MSK	017400		/* SI serial number mask */
#define	SI_SN_DT	07400		/* SI serial number drive type */

#ifdef	BADSECT
#define	NCYL(x)		(x)
#else
#define	NCYL(x)		/* not used */
#endif	BADSECT

/*
 *  Macros to inititialize xp_drive entries.  These can be used as examples,
 *  or as the actual initializers in ioconf.c.  The arguments are the number
 *  of the controller to which the drive is attached, and the physical
 *  drive unit number.  Used only if XP_PROBE is not defined.
 */
#define	RM02_INIT(c,u)  \
	{ &xp_controller[c], RM02, u, &rm_sizes, \
	RM_SECT, RM_TRAC, RM_SECT*RM_TRAC, 0, NCYL(RM_CYL)  } 
#define	RM03_INIT(c,u)  \
	{ &xp_controller[c], RM03, u, &rm_sizes, \
	RM_SECT, RM_TRAC, RM_SECT*RM_TRAC, 0, NCYL(RM_CYL)  } 
#define	RM05_INIT(c,u)  \
	{ &xp_controller[c], RM05, u, &rm5_sizes, \
	RM5_SECT, RM5_TRAC, RM5_SECT*RM5_TRAC, 0, NCYL(RM5_CYL)  } 
#define	RM05X_INIT(c,u) \
	{ &xp_controller[c], RM05X, u, &rm5_sizes, \
	RM5_SECT, RM5_TRAC, RM5_SECT*RM5_TRAC, 0, NCYL(RM5X_CYL)  } 
#define	RP06_INIT(c,u)  \
	{ &xp_controller[c], RP, u, &hp_sizes, \
	HP_SECT, HP_TRAC, HP_SECT*HP_TRAC, 0, NCYL(RP06_CYL)  } 
#define	RP05_INIT(c,u)	RP06_INIT(c,u)
#define	RP04_INIT(c,u)  \
	{ &xp_controller[c], RP, u, &hp_sizes, \
	HP_SECT, HP_TRAC, HP_SECT*HP_TRAC, 0, NCYL(RP04_CYL)  } 
#define	SI_INIT(c,u)	\
	{ &xp_controller[c], RM05, u, &si_sizes, \
	SI_SECT, SI_TRAC, SI_SECT*SI_TRAC, 0, NCYL(SI_CYL)  }
#define	DV_INIT(c,u)    \
	{ &xp_controller[c], DV, u, &dv_sizes, \
	DV_SECT, DV_TRAC, DV_SECT*DV_TRAC, 0, NCYL(DV_CYL)  } 
#endif	NXP

/*
 *	Controller registers and bits
 */
struct hpdevice
{
	union	{
		int	w;
		char	c[2];
	}	hpcs1;		/* control and status 1 register */
	short	hpwc;		/* word count register */
	caddr_t	hpba;		/* UNIBUS address register */
	short	hpda;		/* desired address register */
	union	{
		int	w;
		char	c[2];
	}	hpcs2;		/* control and status 2 register */
	short	hpds;		/* drive status register */
	short	hper1;		/* error register 1 */
	short	hpas;		/* attention summary register */
	short	hpla;		/* look ahead register */
	short	hpdb;		/* data buffer register */
	short	hpmr;		/* maintenance register (1) */ 
	short	hpdt;		/* drive type register */
	short	hpsn;		/* serial number register */
	short	hpof;		/* offset register */
	short	hpdc;		/* desired cylinder address register */
	short	hpcc;		/* HP: current cylinder register */
#define	rmhr	hpcc;		/* RM: holding register */
	short	hper2;		/* HP: error register 2 */
#define	rmmr2	hper2		/* RM: maintenance register 2 */
	short	hper3;		/* HP: error register 3 */
#define	rmer2	hper3		/* RM: error register 2 */
	short	hpec1;		/* burst error bit position */
	short	hpec2;		/* burst error bit pattern */
	short	hpbae;		/* bus address extension register (RH70 only) */
	short	hpcs3;		/* control and status 3 register (RH70 only) */
};

/* Other bits of hpcs1 */
#define	HP_SC		0100000		/* special condition */
#define	HP_TRE		0040000		/* transfer error */
#define	HP_MCPE		0020000		/* MASSBUS control bus read parity error */
/* bit 12 is unused */
#define	HP_DVA		0004000		/* drive available */
/* bits 9 and 8 are the extended address bits */
#define	HP_RDY		0000200		/* controller ready */
#define	HP_IE		0000100		/* interrupt enable */
/* bits 5-1 are the command */
#define	HP_GO		0000001
#define	HP_BITS		\
"\10\20SC\17TRE\16MCPE\14DVA\10RDY\7IE\1GO"

/* commands */
#define	HP_NOP		000
#define	HP_SEEK		004		/* seek */
#define	HP_RECAL	006		/* recalibrate */
#define	HP_DCLR		010		/* drive clear */
#define	HP_RELEASE	012		/* release */
#define	HP_OFFSET	014		/* offset */
#define	HP_RTC		016		/* return to center-line */
#define	HP_PRESET	020		/* read-in preset */
#define	HP_PACK		022		/* pack acknowledge */
#define	HP_SEARCH	030		/* search */
#define	HP_WCDATA	050		/* write check data */
#define	HP_WCHDR	052		/* write check header and data */
#define	HP_WCOM		060		/* write */
#define	HP_WHDR		062		/* write header and data */
#define	HP_RCOM		070		/* read data */
#define	HP_RHDR		072		/* read header and data */
/* The following two are optionally enabled on some non-DEC controllers */
#define	HP_BOOT		074		/* boot */
#define	HP_FORMAT	076		/* format */

/* hpcs2 */
#define	HPCS2_DLT	0100000		/* data late */
#define	HPCS2_WCE	0040000		/* write check error */
#define	HPCS2_UPE	0020000		/* UNIBUS parity error */
#define	HPCS2_NED	0010000		/* nonexistent drive */
#define	HPCS2_NEM	0004000		/* nonexistent memory */
#define	HPCS2_PGE	0002000		/* programming error */
#define	HPCS2_MXF	0001000		/* missed transfer */
#define	HPCS2_MDPE	0000400		/* MASSBUS data read parity error */
#define	HPCS2_OR	0000200		/* output ready */
#define	HPCS2_IR	0000100		/* input ready */
#define	HPCS2_CLR	0000040		/* controller clear */
#define	HPCS2_PAT	0000020		/* parity test */
#define	HPCS2_BAI	0000010		/* address increment inhibit */
/* bits 2-0 are drive select */

#define	HPCS2_BITS \
"\10\20DLT\17WCE\16UPE\15NED\14NEM\13PGE\12MXF\11MDPE\
\10OR\7IR\6CLR\5PAT\4BAI"

/* hpds */
#define	HPDS_ATA	0100000		/* attention active */
#define	HPDS_ERR	0040000		/* composite drive error */
#define	HPDS_PIP	0020000		/* positioning in progress */
#define	HPDS_MOL	0010000		/* medium on line */
#define	HPDS_WRL	0004000		/* write locked */
#define	HPDS_LST	0002000		/* last sector transferred */
#define	HPDS_DAE	0001000		/* dual access enabled (programmable) */
#define	HPDS_DPR	0000400		/* drive present */
#define	HPDS_DRY	0000200		/* drive ready */
#define	HPDS_VV		0000100		/* volume valid */
/* bits 5-1 are spare */
#define	HPDS_OM		0000001		/* offset mode */

#define	HPDS_DREADY	(HPDS_DPR|HPDS_DRY|HPDS_MOL|HPDS_VV)

#define	HPDS_BITS \
"\10\20ATA\17ERR\16PIP\15MOL\14WRL\13LST\12DAE\11DPR\10DRY\7VV\1OM"

/* hper1 */
#define	HPER1_DCK	0100000		/* data check */
#define	HPER1_UNS	0040000		/* drive unsafe */
#define	HPER1_OPI	0020000		/* operation incomplete */
#define	HPER1_DTE	0010000		/* drive timing error */
#define	HPER1_WLE	0004000		/* write lock error */
#define	HPER1_IAE	0002000		/* invalid address error */
#define	HPER1_AOE	0001000		/* address overflow error */
#define	HPER1_HCRC	0000400		/* header crc error */
#define	HPER1_HCE	0000200		/* header compare error */
#define	HPER1_ECH	0000100		/* ecc hard error */
#define	HPER1_WCF	0000040		/* write clock fail (0) */
#define	HPER1_FER	0000020		/* format error */
#define	HPER1_PAR	0000010		/* parity error */
#define	HPER1_RMR	0000004		/* register modification refused */
#define	HPER1_ILR	0000002		/* illegal register */
#define	HPER1_ILF	0000001		/* illegal function */

#define	HPER1_BITS \
"\10\20DCK\17UNS\16OPI\15DTE\14WLE\13IAE\12AOE\11HCRC\10HCE\
\7ECH\6WCF\5FER\4PAR\3RMR\2ILR\1ILF"

/* hpdt */
#define	HPDT_NBA	0100000		/* not block addressed; always 0 */
#define	HPDT_TAPE	0040000		/* tape drive; always 0 */
#define	HPDT_MH		0020000		/* moving head; always 1 */
/* bit 12 is unused */
#define	HPDT_DRR	0004000		/* drive request required  */
/* bits 10-9 are unused */
/* bits 8-0 are drive type; the correct values are hard to determine */
#define	HPDT_RM05SP	0000047		/* single ported rm05 */
#define	HPDT_RM05DP	0000027		/* dual ported rm05 */
#define	HPDT_RM02	0000025		/* rm02, possibly rm03? */
#define	HPDT_RM03	0000024		/* rm03 */
#define	HPDT_RP06	0000022		/* rp06 */

/* hpof */
#define	HPOF_FMT22	0010000		/* 16 bit format */
#define	HPOF_ECI	0004000		/* ecc inhibit */
#define	HPOF_HCI	0002000		/* header compare inhibit */

/* THE SC21 ACTUALLY JUST IMPLEMENTS ADVANCE/RETARD... */
#define	HPOF_P400	0020		/*  +400 uinches */
#define	HPOF_M400	0220		/*  -400 uinches */
#define	HPOF_P800	0040		/*  +800 uinches */
#define	HPOF_M800	0240		/*  -800 uinches */
#define	HPOF_P1200	0060		/* +1200 uinches */
#define	HPOF_M1200	0260		/* -1200 uinches */

#define	HPOF_BITS	\
"\10\15FMT22\14ECI\13HCI\10OD"

/* rmer2: These are the bits for an RM error register 2 */
#define	RMER2_BSE	0100000		/* bad sector error */
#define	RMER2_SKI	0040000		/* seek incomplete */
#define	RMER2_DPE	0020000		/* drive plug error */
#define	RMER2_IVC	0010000		/* invalid command */
#define	RMER2_LSC	0004000		/* loss of system clock */
#define	RMER2_LBC	0002000		/* loss of bit clock */
/* bits 9-8 are unused */
#define	RMER2_DVC	0000200		/* device check */
/* bits 6-4 are unused */
#define	RMER2_MDPE	0000010		/* MASSBUS data read parity error */
/* bits 2-0 are unused */

#define	RMER2_BITS \
"\10\20BSE\17SKI\16DPE\15IVC\14LSC\13LBC\10DVC\4MDPE"

/* hpcs3 */
#define	HPCS3_APE	0100000		/* address parity error */
#define	HPCS3_DPE	0060000		/* data parity error */
#define	HPCS3_WCE	0017000		/* write check error */
#define	HPCS3_DW	0002000		/* double word */
/* bits 9-8 are unused */
#define	HPCS3_IE	0000100		/* interrupt enable */
/* bits 5-4 are unused */
/* bits 3-0 are inverted parity check */

#define	HPCS3_BITS	\
"\10\20APE\17DPE\15WCE\13DW\7IE"