[unix-history] / usr / src / sys / tahoe / vba / vdreg.h

/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 *
 *	@(#)vdreg.h	7.1 (Berkeley) %G%
 */

/*
 * Versabus VDDC/SMDE disk controller definitions.
 */
#define	VDDC_SECSIZE	512	/* sector size for VDDC */
#define	VD_MAXSECSIZE	1024	/* max sector size for SMD/E */

/*
 * Controller communications block.
 */
struct vddevice {
	u_long	vdcdr;		/* controller device register */
	u_long	vdreset;	/* controller reset register */
	u_long	vdcsr;		/* control-status register */
	long	vdrstclr;	/* reset clear register */
	u_short	vdstatus[16];	/* per-drive status register */
	u_short	vdicf_status;	/* status change interupt control format */
	u_short	vdicf_done;	/* interrupt complete control format */
	u_short	vdicf_error;	/* interrupt error control format */
	u_short	vdicf_success;	/* interrupt success control format */
	u_short	vdtcf_mdcb;	/* mdcb transfer control format */
	u_short	vdtcf_dcb;	/* dcb transfer control format */
	u_short	vdtcf_trail;	/* trail transfer control format */
	u_short	vdtcf_data;	/* data transfer control format */
	u_long	vdccf;		/* controller configuration flags */
	u_long	vdsecsize;	/* sector size */
	u_short	vdfill0;
	u_char	vdcylskew;	/* cylinder to cylinder skew factor */
	u_char	vdtrackskew;	/* track to track skew factor */
	u_long	vdfill1;
	u_long	vddfr;		/* diagnostic flag register */
	u_long	vddda;		/* diagnostic dump address */
};

/* controller types */
#define	VDTYPE_VDDC	1	/* old vddc controller (smd only) */
#define	VDTYPE_SMDE	2	/* new smde controller (smd-e) */

/*
 * Controller status definitions.
 */
#define	CS_SCS	0xf		/* status change source (drive number) */
#define	CS_ELC	0x10		/* error on last command */
#define	CS_ICC	0x60		/* interupt cause code */
#define   ICC_NOI  0x00		/* no interupt */
#define   ICC_DUN  0x20		/* no interupt */
#define   ICC_ERR  0x40		/* no interupt */
#define   ICC_SUC  0x60		/* no interupt */
#define	CS_GO	0x80		/* go bit (controller busy) */
#define	CS_BE	0x100		/* buss error */
#define	CS_BOK	0x4000		/* board ok */
#define	CS_SFL	0x8000		/* system fail */
#define	CS_LEC	0xff000000	/* last error code */

/*
 * Drive status definitions.
 */
#define	STA_UR	0x1		/* unit ready */
#define	STA_OC	0x2		/* on cylinder */
#define	STA_SE	0x4		/* seek error */
#define	STA_DF	0x8		/* drive fault */
#define	STA_WP	0x10		/* write protected */
#define	STA_US	0x20		/* unit selected */

/*
 * Interupt Control Field definitions.
 */
#define	ICF_IPL	0x7		/* interupt priority level */
#define	ICF_IEN	0x8		/* interupt enable */
#define	ICF_IV	0xff00		/* interupt vector */

/*
 * Transfer Control Format definitions.
 */
#define	TCF_AM	0xff		/* Address Modifier */
#define	  AM_SNPDA   0x01	/* Standard Non-Privileged Data Access */
#define	  AM_SASA    0x81	/* Standard Ascending Sequential Access */
#define	  AM_ENPDA   0xf1	/* Extended Non-Privileged Data Access */
#define	  AM_EASA    0xe1	/* Extended Ascending Sequential Access */
#define	TCF_BTE	0x800		/* Block Transfer Enable */

/*
 * Controller Configuration Flags.
 */
#define	CCF_STS	0x1		/* sectors per track selectable */
#define	CCF_EAV	0x2		/* enable auto vector */
#define	CCF_ERR	0x4		/* enable reset register */
#define CCF_DER 0x8		/* disable error recovery */
#define	CCF_XMD	0x60		/* xmd transfer mode (bus size) */
#define	  XMD_8BIT  0x20	/*   do only 8 bit transfers */
#define	  XMD_16BIT 0x40	/*   do only 16 bit transfers */
#define	  XMD_32BIT 0x60	/*   do only 32 bit transfers */
#define	CCF_BSZ	0x300		/* burst size */
#define	  BSZ_16WRD 0x000	/*   16 word transfer burst */
#define	  BSZ_12WRD 0x100	/*   12 word transfer burst */
#define	  BSZ_8WRD  0x200	/*   8 word transfer burst */
#define	  BSZ_4WRD  0x300	/*   4 word transfer burst */
#define CCF_SEN	0x400		/* cylinder/track skew enable (for format) */
#define	CCF_ENP	0x1000		/* enable parity */
#define	CCF_EPE	0x2000		/* enable parity errors */
#define	CCF_EDE	0x10000		/* error detection enable */
#define	CCF_ECE	0x20000		/* error correction enable */

/*
 * Diagnostic register definitions.
 */
#define	DIA_DC	0x7f		/* dump count mask */
#define	DIA_DWR	0x80		/* dump write/read flag */
#define	DIA_ARE	0x100		/* auto rebuild enable */
#define	DIA_CEN	0x200		/* call enable flag */
#define	DIA_KEY	0xAA550000	/* reset enable key */

/*
 * Hardware interface flags, in dcb.devselect and d_devflags
 */
#define VD_ESDI	0x10		/* drive is on ESDI interface */
#define	d_devflags	d_drivedata[0]		/* in disk label */

/*
 * Error recovery flags.
 */
#define	VDRF_RTZ	0x0001	/* return to zero */
#define	VDRF_OCF	0x0002	/* on cylinder false */
#define	VDRF_OSP	0x0004	/* offset plus */
#define	VDRF_OSM	0x0008	/* offset minus */
#define	VDRF_DSE	0x0080	/* data strobe early */
#define	VDRF_DSL	0x0100	/* data strobe late */

#define	VDRF_NONE	0
#define	VDRF_NORMAL	(VDRF_RTZ|VDRF_OCF|VDRF_OSP|VDRF_OSM|VDRF_DSE|VDRF_DSE)

/*
 * Perform a reset on the controller.
 */
#define	VDRESET(a,t) { \
	if ((t) == VDTYPE_SMDE) { \
		((struct vddevice *)(a))->vddfr = DIA_KEY|DIA_CEN; \
		((struct vddevice *)(a))->vdcdr = (u_long)0xffffffff; \
		DELAY(5000000); \
	} else { \
		((struct vddevice *)(a))->vdreset = 0; \
		DELAY(1500000); \
	} \
}

/*
 * Abort a controller operation.
 */
#define	VDABORT(a,t) { \
	if ((t) == VDTYPE_VDDC) { \
		movow((a), (VDOP_ABORT&0xffff0000)>>16) ; \
		movow((int)(a)+2, VDOP_ABORT&0xffff); \
	} else \
		((struct vddevice *)(a))->vdcdr = (u_long)VDOP_ABORT; \
	DELAY(1000000); \
}

/*
 * Start a command.
 */
#define VDGO(a,mdcb,t) {\
	if ((t) == VDTYPE_VDDC) { \
		movow((a), ((int)(mdcb)&0xffff0000)>>16) ; \
		movow((int)((a))+2, (int)(mdcb)&0xffff); \
	} else \
		((struct vddevice *)(a))->vdcdr = (mdcb); \
}

/*
 * MDCB layout.
 */
struct mdcb {
	struct	dcb *mdcb_head;		/* first dcb in list */
	struct	dcb *mdcb_busy;		/* dcb being processed */
	struct	dcb *mdcb_intr;		/* dcb causing interrupt */
	long	mdcb_status;		/* status of dcb in mdcb_busy */
};

/*
 * DCB definitions.
 */

/*
 * A disk address.
 */
typedef struct {
	u_char	track;			/* all 8 bits */
	u_char	sector;			/* all 8  bits */
	u_short	cylinder;		/* low order 12 bits */
} dskadr;

/*
 * DCB trailer formats.
 */
/* read/write trailer */
struct trrw {
	u_long	memadr;		/* memory address */
	u_long	wcount;		/* 16 bit word count */
	dskadr	disk;		/* disk address */
};

/* scatter/gather trailer */
#define	VDMAXPAGES	(MAXPHYS / NBPG)
struct trsg {
	struct	trrw start_addr;
	struct addr_chain {
		u_long	nxt_addr;
		u_long	nxt_len;
	} addr_chain[VDMAXPAGES + 1];
};

/* seek trailer format */
struct trseek {
	dskadr	skaddr;
};

/* format trailer */
struct trfmt {
	char	*addr;		/* data buffer to be filled on sector*/
	long	nsectors;	/* # of sectors to be formatted */
	dskadr	disk;		/* disk physical address info */
	dskadr  hdr;		/* header address info */
};

/* reset/configure trailer */
struct treset {
	long	ncyl;		/* # cylinders */
	long	nsurfaces;	/* # surfaces */
	long	nsectors;	/* # sectors */
	long	slip_sec;	/* # of slip sectors */
	long	recovery;	/* recovery flags */
};

/* ident trailer */
struct trid {
	long	name;
	long	id;
	long	date;
};

/*
 * DCB layout.
 */
struct dcb {
	struct	dcb *nxtdcb;	/* next dcb */
	short	intflg;		/* interrupt settings and flags */
	short	opcode;		/* DCB command code etc... */
	long	operrsta;	/* error & status info */
	short	fill;		/* not used */
	char	devselect;	/* drive selection */
	char	trailcnt;	/* trailer Word Count */
	long	err_memadr;	/* error memory address */
	char	err_code;	/* error codes for SMD/E */
	char	fill2;		/* not used */
	short	err_wcount;	/* error word count */
	char	err_trk;	/* error track/sector */
	char	err_sec;	/* error track/sector */
	short	err_cyl;	/* error cylinder adr */
	union {
		struct	trid idtrail;	/* ident command trailer */
		struct	trseek sktrail;	/* seek command trailer */
		struct	trsg sgtrail;	/* scatter/gather trailer */
		struct	trrw rwtrail;	/* read/write trailer */
		struct	trfmt fmtrail;	/* format trailer */
		struct	treset rstrail;	/* reset/configure trailer */
	} trail;
};

/*
 * smaller DCB with seek trailer only (no scatter-gather).
 */
struct skdcb {
	struct	dcb *nxtdcb;	/* next dcb */
	short	intflg;		/* interrupt settings and flags */
	short	opcode;		/* DCB command code etc... */
	long	operrsta;	/* error & status info */
	short	fill;		/* not used */
	char	devselect;	/* drive selection */
	char	trailcnt;	/* trailer Word Count */
	long	err_memadr;	/* error memory address */
	char	err_code;	/* error codes for SMD/E */
	char	fill2;		/* not used */
	short	err_wcount;	/* error word count */
	char	err_trk;	/* error track/sector */
	char	err_sec;	/* error track/sector */
	short	err_cyl;	/* error cylinder adr */
	union {
		struct	trseek sktrail;	/* seek command trailer */
	} trail;
};

/*
 * DCB command codes.
 */
#define	VDOP_RD		0x80		/* read data */
#define	VDOP_FTR	0xc0		/* full track read */
#define	VDOP_RAS	0x90		/* read and scatter */
#define	VDOP_RDRAW	0x600		/* read unformatted disk sector */
#define	VDOP_CMP	0xa0		/* compare */
#define	VDOP_FTC	0xe0		/* full track compare */
#define	VDOP_RHDE	0x180		/* read header, data & ecc */
#define	VDOP_WD		0x00		/* write data */
#define	VDOP_FTW	0x40		/* full track write */
#define	VDOP_WTC	0x20		/* write then compare */
#define	VDOP_FTWTC	0x60		/* full track write then compare */
#define	VDOP_GAW	0x10		/* gather and write */
#define	VDOP_WDE	0x100		/* write data & ecc */
#define	VDOP_FSECT	0x900		/* format sector */
#define	VDOP_GWC	0x30		/* gather write & compare */
#define	VDOP_START	0x800		/* start drives */
#define	VDOP_RELEASE	0xa00		/* stop drives */
#define	VDOP_SEEK	0xb00		/* seek */
#define	VDOP_INIT	0xc00		/* initialize controller */
#define	VDOP_DIAG	0xd00		/* diagnose (self-test) controller */
#define	VDOP_CONFIG	0xe00		/* reset & configure drive */
#define	VDOP_STATUS	0xf00		/* get drive status */
#define	VDOP_IDENT	0x700		/* identify controller */

#define	VDOP_ABORT	0x80000000	/* abort current command */

/*
 * DCB status definitions.
 */
#define	DCBS_HCRC	0x00000001	/* header crc error */
#define	DCBS_HCE	0x00000002	/* header compare error */
#define	DCBS_WPT	0x00000004	/* drive write protected */
#define	DCBS_CHE	0x00000008	/* controller hardware error */
#define	DCBS_SKI	0x00000010	/* seek incomplete */
#define	DCBS_UDE	0x00000020	/* uncorrectable data error */
#define	DCBS_OCYL	0x00000040	/* off cylinder */
#define	DCBS_NRDY	0x00000080	/* drive not ready */
#define	DCBS_ATA	0x00000100	/* alternate track accessed */
#define	DCBS_SKS	0x00000200	/* seek started */
#define	DCBS_IVA	0x00000400	/* invalid disk address error */
#define	DCBS_NEM	0x00000800	/* non-existant memory error */
#define	DCBS_DPE	0x00001000	/* memory data parity error */
#define	DCBS_DCE	0x00002000	/* data compare error */
#define	DCBS_DDI	0x00004000	/* ddi ready */
#define	DCBS_OAB	0x00008000	/* operation aborted */
#define	DCBS_DSE	0x00010000	/* data strobe early */
#define	DCBS_DSL	0x00020000	/* data strobe late */
#define	DCBS_TOP	0x00040000	/* track offset plus */
#define	DCBS_TOM	0x00080000	/* track offset minus */
#define	DCBS_CCD	0x00100000	/* controller corrected data */
#define	DCBS_HARD	0x00200000	/* hard error */
#define	DCBS_SOFT	0x00400000	/* soft error (retry succesful) */
#define	DCBS_ERR	0x00800000	/* composite error */
#define DCBS_IVC	0x01000000	/* invalid command error */
/* bits 24-27 unused */
#define	DCBS_BSY	0x10000000	/* controller busy */
#define	DCBS_ICC	0x60000000	/* interrupt cause code */
#define	DCBS_INT	0x80000000	/* interrupt generated for this dcb */

#define	VDERRBITS	"\20\1HCRC\2HCE\3WPT\4CHE\5DSKI\6UDE\7OCYL\10NRDY\
\11ATA\12SKS\13IVA\14NEM\15DPE\16DCE\17DDI\20OAB\21DSE\22DSL\23TOP\24TOM\
\25CCD\26HARD\27SOFT\30ERR\31IVC\35ABORTED\36FAIL\37COMPLETE\40STARTED"

/* drive related errors */
#define	VDERR_DRIVE	(DCBS_SKI|DCBS_OCYL|DCBS_NRDY|DCBS_IVA)
/* controller related errors */
#define	VDERR_CTLR	(DCBS_CHE|DCBS_OAB|DCBS_IVC|DCBS_NEM)
/* potentially recoverable errors */
#define	VDERR_RETRY \
    (VDERR_DRIVE|VDERR_CTLR|DCBS_DCE|DCBS_DPE|DCBS_HCRC|DCBS_HCE)
/* uncorrected data errors */
#define	VDERR_HARD	(VDERR_RETRY|DCBS_WPT|DCBS_UDE)

/*
 * DCB status codes.
 */
#define	DCBS_ABORT	0x10000000	/* dcb aborted */
#define	DCBS_FAIL	0x20000000	/* dcb unsuccesfully completed */
#define	DCBS_DONE	0x40000000	/* dcb complete */
#define	DCBS_START	0x80000000	/* dcb started */

/*
 * DCB interrupt control.
 */
#define	DCBINT_NONE	0x0		/* don't interrupt */
#define	DCBINT_ERR	0x2		/* interrupt on error */
#define	DCBINT_SUC	0x1		/* interrupt on success */
#define	DCBINT_DONE	(DCBINT_ERR|DCBINT_SUC)
#define	DCBINT_PBA	0x4		/* proceed before acknowledge */

/*
 * Sector formats.
 */
typedef union {
	struct {
		dskadr	hdr_addr;
		short	smd_crc;
	} smd;
	struct {
		dskadr	physical;
		dskadr	logical;
		long	smd_e_crc;
	} smd_e;
} fmt_hdr;

/* Sector Header bit assignments */
#define	VDMF	0x8000		/* Manufacturer Fault 1=good sector */
#define	VDUF	0x4000		/* User Fault 1=good sector */
#define	VDALT	0x2000		/* Alternate Sector 1=alternate */
#define	VDWPT	0x1000		/* Write Protect 1=Read Only Sector */

/* input register assignments for DIOCWFORMAT ioctl */
#define	dk_op		df_reg[0]	/* opcode */
#define	dk_althdr	df_reg[1]	/* alt. sect. header, in an int! */
#define	dk_fmtflags	df_reg[2]	/* header format flags */

/* output register assignments for DIOCWFORMAT ioctl */
#define	dk_operrsta	df_reg[0]	/* dcb operrsta */
#define	dk_ecode	df_reg[1]	/* smd-e err_code */
Commit	Line	Data
430f81c3 MK	1	/*
	2	* Copyright (c) 1988 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that this notice is preserved and that due credit is given
	7	* to the University of California at Berkeley. The name of the University
	8	* may not be used to endorse or promote products derived from this
	9	* software without specific prior written permission. This software
	10	* is provided ``as is'' without express or implied warranty.
	11	*
	12	* @(#)vdreg.h 7.1 (Berkeley) %G%
	13	*/
ee18b8e6 SL	14
ee18b8e6 SL	15	/*
7bae1a62	16	* Versabus VDDC/SMDE disk controller definitions.
ee18b8e6	17	*/
b39ce066 MK	18	#define VDDC_SECSIZE 512 /* sector size for VDDC */
b39ce066 MK	19	#define VD_MAXSECSIZE 1024 /* max sector size for SMD/E */
ee18b8e6 SL	20
ee18b8e6 SL	21	/*
7bae1a62	22	* Controller communications block.
ee18b8e6	23	*/
7bae1a62 SL	24	struct vddevice {
	25	u_long vdcdr; /* controller device register */
	26	u_long vdreset; /* controller reset register */
	27	u_long vdcsr; /* control-status register */
	28	long vdrstclr; /* reset clear register */
	29	u_short vdstatus[16]; /* per-drive status register */
	30	u_short vdicf_status; /* status change interupt control format */
	31	u_short vdicf_done; /* interrupt complete control format */
	32	u_short vdicf_error; /* interrupt error control format */
	33	u_short vdicf_success; /* interrupt success control format */
	34	u_short vdtcf_mdcb; /* mdcb transfer control format */
	35	u_short vdtcf_dcb; /* dcb transfer control format */
	36	u_short vdtcf_trail; /* trail transfer control format */
	37	u_short vdtcf_data; /* data transfer control format */
	38	u_long vdccf; /* controller configuration flags */
	39	u_long vdsecsize; /* sector size */
	40	u_short vdfill0;
	41	u_char vdcylskew; /* cylinder to cylinder skew factor */
	42	u_char vdtrackskew; /* track to track skew factor */
	43	u_long vdfill1;
	44	u_long vddfr; /* diagnostic flag register */
	45	u_long vddda; /* diagnostic dump address */
	46	};
ee18b8e6	47
7bae1a62 SL	48	/* controller types */
	49	#define VDTYPE_VDDC 1 /* old vddc controller (smd only) */
	50	#define VDTYPE_SMDE 2 /* new smde controller (smd-e) */
ee18b8e6 SL	51
ee18b8e6 SL	52	/*
7bae1a62	53	* Controller status definitions.
82bc5dc5	54	*/
7bae1a62 SL	55	#define CS_SCS 0xf /* status change source (drive number) */
	56	#define CS_ELC 0x10 /* error on last command */
	57	#define CS_ICC 0x60 /* interupt cause code */
	58	#define ICC_NOI 0x00 /* no interupt */
	59	#define ICC_DUN 0x20 /* no interupt */
	60	#define ICC_ERR 0x40 /* no interupt */
	61	#define ICC_SUC 0x60 /* no interupt */
	62	#define CS_GO 0x80 /* go bit (controller busy) */
	63	#define CS_BE 0x100 /* buss error */
	64	#define CS_BOK 0x4000 /* board ok */
	65	#define CS_SFL 0x8000 /* system fail */
	66	#define CS_LEC 0xff000000 /* last error code */
ee18b8e6 SL	67
ee18b8e6 SL	68	/*
7bae1a62	69	* Drive status definitions.
ee18b8e6	70	*/
7bae1a62 SL	71	#define STA_UR 0x1 /* unit ready */
	72	#define STA_OC 0x2 /* on cylinder */
	73	#define STA_SE 0x4 /* seek error */
	74	#define STA_DF 0x8 /* drive fault */
	75	#define STA_WP 0x10 /* write protected */
	76	#define STA_US 0x20 /* unit selected */
ee18b8e6 SL	77
ee18b8e6 SL	78	/*
7bae1a62	79	* Interupt Control Field definitions.
ee18b8e6	80	*/
7bae1a62 SL	81	#define ICF_IPL 0x7 /* interupt priority level */
	82	#define ICF_IEN 0x8 /* interupt enable */
	83	#define ICF_IV 0xff00 /* interupt vector */
ee18b8e6 SL	84
ee18b8e6 SL	85	/*
7bae1a62	86	* Transfer Control Format definitions.
ee18b8e6	87	*/
ee18b8e6 SL	88	#define TCF_AM 0xff /* Address Modifier */
	89	#define AM_SNPDA 0x01 /* Standard Non-Privileged Data Access */
	90	#define AM_SASA 0x81 /* Standard Ascending Sequential Access */
	91	#define AM_ENPDA 0xf1 /* Extended Non-Privileged Data Access */
	92	#define AM_EASA 0xe1 /* Extended Ascending Sequential Access */
	93	#define TCF_BTE 0x800 /* Block Transfer Enable */
	94
7bae1a62 SL	95	/*
	96	* Controller Configuration Flags.
	97	*/
	98	#define CCF_STS 0x1 /* sectors per track selectable */
	99	#define CCF_EAV 0x2 /* enable auto vector */
	100	#define CCF_ERR 0x4 /* enable reset register */
	101	#define CCF_DER 0x8 /* disable error recovery */
	102	#define CCF_XMD 0x60 /* xmd transfer mode (bus size) */
	103	#define XMD_8BIT 0x20 /* do only 8 bit transfers */
	104	#define XMD_16BIT 0x40 /* do only 16 bit transfers */
	105	#define XMD_32BIT 0x60 /* do only 32 bit transfers */
	106	#define CCF_BSZ 0x300 /* burst size */
ee18b8e6 SL	107	#define BSZ_16WRD 0x000 /* 16 word transfer burst */
	108	#define BSZ_12WRD 0x100 /* 12 word transfer burst */
	109	#define BSZ_8WRD 0x200 /* 8 word transfer burst */
	110	#define BSZ_4WRD 0x300 /* 4 word transfer burst */
7bae1a62 SL	111	#define CCF_SEN 0x400 /* cylinder/track skew enable (for format) */
	112	#define CCF_ENP 0x1000 /* enable parity */
	113	#define CCF_EPE 0x2000 /* enable parity errors */
	114	#define CCF_EDE 0x10000 /* error detection enable */
	115	#define CCF_ECE 0x20000 /* error correction enable */
ee18b8e6 SL	116
	117	/*
	118	* Diagnostic register definitions.
	119	*/
7bae1a62 SL	120	#define DIA_DC 0x7f /* dump count mask */
	121	#define DIA_DWR 0x80 /* dump write/read flag */
	122	#define DIA_ARE 0x100 /* auto rebuild enable */
	123	#define DIA_CEN 0x200 /* call enable flag */
	124	#define DIA_KEY 0xAA550000 /* reset enable key */
ee18b8e6	125
b39ce066 MK	126	/*
	127	* Hardware interface flags, in dcb.devselect and d_devflags
	128	*/
	129	#define VD_ESDI 0x10 /* drive is on ESDI interface */
	130	#define d_devflags d_drivedata[0] /* in disk label */
	131
	132	/*
	133	* Error recovery flags.
	134	*/
	135	#define VDRF_RTZ 0x0001 /* return to zero */
	136	#define VDRF_OCF 0x0002 /* on cylinder false */
	137	#define VDRF_OSP 0x0004 /* offset plus */
	138	#define VDRF_OSM 0x0008 /* offset minus */
	139	#define VDRF_DSE 0x0080 /* data strobe early */
	140	#define VDRF_DSL 0x0100 /* data strobe late */
	141
	142	#define VDRF_NONE 0
	143	#define VDRF_NORMAL (VDRF_RTZ\|VDRF_OCF\|VDRF_OSP\|VDRF_OSM\|VDRF_DSE\|VDRF_DSE)
	144
ee18b8e6 SL	145	/*
	146	* Perform a reset on the controller.
	147	*/
7bae1a62 SL	148	#define VDRESET(a,t) { \
	149	if ((t) == VDTYPE_SMDE) { \
	150	((struct vddevice *)(a))->vddfr = DIA_KEY\|DIA_CEN; \
	151	((struct vddevice *)(a))->vdcdr = (u_long)0xffffffff; \
ee18b8e6 SL	152	DELAY(5000000); \
ee18b8e6 SL	153	} else { \
7bae1a62	154	((struct vddevice *)(a))->vdreset = 0; \
ee18b8e6 SL	155	DELAY(1500000); \
	156	} \
	157	}
	158
	159	/*
	160	* Abort a controller operation.
	161	*/
7bae1a62 SL	162	#define VDABORT(a,t) { \
	163	if ((t) == VDTYPE_VDDC) { \
	164	movow((a), (VDOP_ABORT&0xffff0000)>>16) ; \
	165	movow((int)(a)+2, VDOP_ABORT&0xffff); \
ee18b8e6	166	} else \
7bae1a62	167	((struct vddevice *)(a))->vdcdr = (u_long)VDOP_ABORT; \
ee18b8e6 SL	168	DELAY(1000000); \
	169	}
	170
	171	/*
7bae1a62	172	* Start a command.
ee18b8e6	173	*/
7bae1a62 SL	174	#define VDGO(a,mdcb,t) {\
	175	if ((t) == VDTYPE_VDDC) { \
	176	movow((a), ((int)(mdcb)&0xffff0000)>>16) ; \
	177	movow((int)((a))+2, (int)(mdcb)&0xffff); \
ee18b8e6	178	} else \
7bae1a62	179	((struct vddevice *)(a))->vdcdr = (mdcb); \
ee18b8e6 SL	180	}
ee18b8e6 SL	181
ee18b8e6	182	/*
7bae1a62	183	* MDCB layout.
ee18b8e6	184	*/
7bae1a62 SL	185	struct mdcb {
	186	struct dcb mdcb_head; / first dcb in list */
	187	struct dcb mdcb_busy; / dcb being processed */
	188	struct dcb mdcb_intr; / dcb causing interrupt */
	189	long mdcb_status; /* status of dcb in mdcb_busy */
	190	};
ee18b8e6 SL	191
ee18b8e6 SL	192	/*
7bae1a62	193	* DCB definitions.
ee18b8e6	194	*/
7bae1a62 SL	195
	196	/*
	197	* A disk address.
	198	*/
	199	typedef struct {
	200	u_char track; /* all 8 bits */
	201	u_char sector; /* all 8 bits */
	202	u_short cylinder; /* low order 12 bits */
	203	} dskadr;
ee18b8e6 SL	204
	205	/*
	206	* DCB trailer formats.
	207	*/
	208	/* read/write trailer */
d99b7c9d	209	struct trrw {
1f9a1539	210	u_long memadr; /* memory address */
ee18b8e6 SL	211	u_long wcount; /* 16 bit word count */
ee18b8e6 SL	212	dskadr disk; /* disk address */
d99b7c9d	213	};
ee18b8e6 SL	214
ee18b8e6 SL	215	/* scatter/gather trailer */
d99b7c9d MK	216	#define VDMAXPAGES (MAXPHYS / NBPG)
	217	struct trsg {
	218	struct trrw start_addr;
	219	struct addr_chain {
1f9a1539	220	u_long nxt_addr;
ee18b8e6	221	u_long nxt_len;
d99b7c9d MK	222	} addr_chain[VDMAXPAGES + 1];
d99b7c9d MK	223	};
ee18b8e6 SL	224
ee18b8e6 SL	225	/* seek trailer format */
d99b7c9d	226	struct trseek {
ee18b8e6	227	dskadr skaddr;
d99b7c9d	228	};
ee18b8e6 SL	229
ee18b8e6 SL	230	/* format trailer */
d99b7c9d	231	struct trfmt {
ee18b8e6 SL	232	char addr; / data buffer to be filled on sector*/
	233	long nsectors; /* # of sectors to be formatted */
	234	dskadr disk; /* disk physical address info */
	235	dskadr hdr; /* header address info */
d99b7c9d	236	};
ee18b8e6 SL	237
ee18b8e6 SL	238	/* reset/configure trailer */
d99b7c9d	239	struct treset {
ee18b8e6 SL	240	long ncyl; /* # cylinders */
	241	long nsurfaces; /* # surfaces */
	242	long nsectors; /* # sectors */
	243	long slip_sec; /* # of slip sectors */
8d35fe51	244	long recovery; /* recovery flags */
d99b7c9d MK	245	};
	246
	247	/* ident trailer */
	248	struct trid {
	249	long name;
	250	long id;
	251	long date;
	252	};
ee18b8e6 SL	253
	254	/*
	255	* DCB layout.
	256	*/
7bae1a62 SL	257	struct dcb {
7bae1a62 SL	258	struct dcb nxtdcb; / next dcb */
ee18b8e6 SL	259	short intflg; /* interrupt settings and flags */
	260	short opcode; /* DCB command code etc... */
	261	long operrsta; /* error & status info */
	262	short fill; /* not used */
	263	char devselect; /* drive selection */
	264	char trailcnt; /* trailer Word Count */
	265	long err_memadr; /* error memory address */
	266	char err_code; /* error codes for SMD/E */
	267	char fill2; /* not used */
	268	short err_wcount; /* error word count */
	269	char err_trk; /* error track/sector */
	270	char err_sec; /* error track/sector */
	271	short err_cyl; /* error cylinder adr */
	272	union {
d99b7c9d MK	273	struct trid idtrail; /* ident command trailer */
	274	struct trseek sktrail; /* seek command trailer */
	275	struct trsg sgtrail; /* scatter/gather trailer */
	276	struct trrw rwtrail; /* read/write trailer */
	277	struct trfmt fmtrail; /* format trailer */
	278	struct treset rstrail; /* reset/configure trailer */
	279	} trail;
	280	};
	281
	282	/*
	283	* smaller DCB with seek trailer only (no scatter-gather).
	284	*/
	285	struct skdcb {
	286	struct dcb nxtdcb; / next dcb */
	287	short intflg; /* interrupt settings and flags */
	288	short opcode; /* DCB command code etc... */
	289	long operrsta; /* error & status info */
	290	short fill; /* not used */
	291	char devselect; /* drive selection */
	292	char trailcnt; /* trailer Word Count */
	293	long err_memadr; /* error memory address */
	294	char err_code; /* error codes for SMD/E */
	295	char fill2; /* not used */
	296	short err_wcount; /* error word count */
	297	char err_trk; /* error track/sector */
	298	char err_sec; /* error track/sector */
	299	short err_cyl; /* error cylinder adr */
	300	union {
	301	struct trseek sktrail; /* seek command trailer */
ee18b8e6	302	} trail;
7bae1a62	303	};
ee18b8e6 SL	304
ee18b8e6 SL	305	/*
7bae1a62	306	* DCB command codes.
ee18b8e6	307	*/
7bae1a62 SL	308	#define VDOP_RD 0x80 /* read data */
	309	#define VDOP_FTR 0xc0 /* full track read */
	310	#define VDOP_RAS 0x90 /* read and scatter */
	311	#define VDOP_RDRAW 0x600 /* read unformatted disk sector */
	312	#define VDOP_CMP 0xa0 /* compare */
	313	#define VDOP_FTC 0xe0 /* full track compare */
	314	#define VDOP_RHDE 0x180 /* read header, data & ecc */
	315	#define VDOP_WD 0x00 /* write data */
	316	#define VDOP_FTW 0x40 /* full track write */
	317	#define VDOP_WTC 0x20 /* write then compare */
	318	#define VDOP_FTWTC 0x60 /* full track write then compare */
	319	#define VDOP_GAW 0x10 /* gather and write */
	320	#define VDOP_WDE 0x100 /* write data & ecc */
	321	#define VDOP_FSECT 0x900 /* format sector */
	322	#define VDOP_GWC 0x30 /* gather write & compare */
	323	#define VDOP_START 0x800 /* start drives */
	324	#define VDOP_RELEASE 0xa00 /* stop drives */
	325	#define VDOP_SEEK 0xb00 /* seek */
	326	#define VDOP_INIT 0xc00 /* initialize controller */
	327	#define VDOP_DIAG 0xd00 /* diagnose (self-test) controller */
	328	#define VDOP_CONFIG 0xe00 /* reset & configure drive */
	329	#define VDOP_STATUS 0xf00 /* get drive status */
d99b7c9d	330	#define VDOP_IDENT 0x700 /* identify controller */
7bae1a62 SL	331
7bae1a62 SL	332	#define VDOP_ABORT 0x80000000 /* abort current command */
ee18b8e6 SL	333
ee18b8e6 SL	334	/*
7bae1a62	335	* DCB status definitions.
ee18b8e6	336	*/
7bae1a62 SL	337	#define DCBS_HCRC 0x00000001 /* header crc error */
	338	#define DCBS_HCE 0x00000002 /* header compare error */
	339	#define DCBS_WPT 0x00000004 /* drive write protected */
	340	#define DCBS_CHE 0x00000008 /* controller hardware error */
	341	#define DCBS_SKI 0x00000010 /* seek incomplete */
	342	#define DCBS_UDE 0x00000020 /* uncorrectable data error */
	343	#define DCBS_OCYL 0x00000040 /* off cylinder */
	344	#define DCBS_NRDY 0x00000080 /* drive not ready */
	345	#define DCBS_ATA 0x00000100 /* alternate track accessed */
	346	#define DCBS_SKS 0x00000200 /* seek started */
	347	#define DCBS_IVA 0x00000400 /* invalid disk address error */
	348	#define DCBS_NEM 0x00000800 /* non-existant memory error */
	349	#define DCBS_DPE 0x00001000 /* memory data parity error */
	350	#define DCBS_DCE 0x00002000 /* data compare error */
	351	#define DCBS_DDI 0x00004000 /* ddi ready */
	352	#define DCBS_OAB 0x00008000 /* operation aborted */
	353	#define DCBS_DSE 0x00010000 /* data strobe early */
	354	#define DCBS_DSL 0x00020000 /* data strobe late */
	355	#define DCBS_TOP 0x00040000 /* track offset plus */
	356	#define DCBS_TOM 0x00080000 /* track offset minus */
	357	#define DCBS_CCD 0x00100000 /* controller corrected data */
	358	#define DCBS_HARD 0x00200000 /* hard error */
	359	#define DCBS_SOFT 0x00400000 /* soft error (retry succesful) */
	360	#define DCBS_ERR 0x00800000 /* composite error */
	361	#define DCBS_IVC 0x01000000 /* invalid command error */
	362	/* bits 24-27 unused */
	363	#define DCBS_BSY 0x10000000 /* controller busy */
	364	#define DCBS_ICC 0x60000000 /* interrupt cause code */
	365	#define DCBS_INT 0x80000000 /* interrupt generated for this dcb */
	366
	367	#define VDERRBITS "\20\1HCRC\2HCE\3WPT\4CHE\5DSKI\6UDE\7OCYL\10NRDY\
	368	\11ATA\12SKS\13IVA\14NEM\15DPE\16DCE\17DDI\20OAB\21DSE\22DSL\23TOP\24TOM\
	369	\25CCD\26HARD\27SOFT\30ERR\31IVC\35ABORTED\36FAIL\37COMPLETE\40STARTED"
	370
	371	/* drive related errors */
	372	#define VDERR_DRIVE (DCBS_SKI\|DCBS_OCYL\|DCBS_NRDY\|DCBS_IVA)
	373	/* controller related errors */
	374	#define VDERR_CTLR (DCBS_CHE\|DCBS_OAB\|DCBS_IVC\|DCBS_NEM)
	375	/* potentially recoverable errors */
1f9a1539	376	#define VDERR_RETRY \
7bae1a62 SL	377	(VDERR_DRIVE\|VDERR_CTLR\|DCBS_DCE\|DCBS_DPE\|DCBS_HCRC\|DCBS_HCE)
7bae1a62 SL	378	/* uncorrected data errors */
1f9a1539	379	#define VDERR_HARD (VDERR_RETRY\|DCBS_WPT\|DCBS_UDE)
ee18b8e6 SL	380
ee18b8e6 SL	381	/*
7bae1a62	382	* DCB status codes.
ee18b8e6	383	*/
7bae1a62 SL	384	#define DCBS_ABORT 0x10000000 /* dcb aborted */
	385	#define DCBS_FAIL 0x20000000 /* dcb unsuccesfully completed */
	386	#define DCBS_DONE 0x40000000 /* dcb complete */
	387	#define DCBS_START 0x80000000 /* dcb started */
ee18b8e6	388
7bae1a62 SL	389	/*
	390	* DCB interrupt control.
	391	*/
	392	#define DCBINT_NONE 0x0 /* don't interrupt */
	393	#define DCBINT_ERR 0x2 /* interrupt on error */
	394	#define DCBINT_SUC 0x1 /* interrupt on success */
	395	#define DCBINT_DONE (DCBINT_ERR\|DCBINT_SUC)
	396	#define DCBINT_PBA 0x4 /* proceed before acknowledge */
ee18b8e6	397
7bae1a62 SL	398	/*
	399	* Sector formats.
	400	*/
	401	typedef union {
	402	struct {
	403	dskadr hdr_addr;
	404	short smd_crc;
	405	} smd;
	406	struct {
	407	dskadr physical;
	408	dskadr logical;
	409	long smd_e_crc;
	410	} smd_e;
	411	} fmt_hdr;
ee18b8e6	412
7bae1a62 SL	413	/* Sector Header bit assignments */
	414	#define VDMF 0x8000 /* Manufacturer Fault 1=good sector */
	415	#define VDUF 0x4000 /* User Fault 1=good sector */
	416	#define VDALT 0x2000 /* Alternate Sector 1=alternate */
	417	#define VDWPT 0x1000 /* Write Protect 1=Read Only Sector */
81304755 MK	418
	419	/* input register assignments for DIOCWFORMAT ioctl */
	420	#define dk_op df_reg[0] /* opcode */
	421	#define dk_althdr df_reg[1] /* alt. sect. header, in an int! */
	422	#define dk_fmtflags df_reg[2] /* header format flags */
	423
	424	/* output register assignments for DIOCWFORMAT ioctl */
	425	#define dk_operrsta df_reg[0] /* dcb operrsta */
	426	#define dk_ecode df_reg[1] /* smd-e err_code */