Eric Lee / smarc-fsl-linux-kernel

aic79xx.reg 72.2 KB
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/*
 * Aic79xx register and scratch ram definitions.
 *
 * Copyright (c) 1994-2001, 2004 Justin T. Gibbs.
 * Copyright (c) 2000-2002 Adaptec Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * $FreeBSD$
 */
VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic79xx.reg#77 $"

/*
 * This file is processed by the aic7xxx_asm utility for use in assembling
 * firmware for the aic79xx family of SCSI host adapters as well as to generate
 * a C header file for use in the kernel portion of the Aic79xx driver.
 */

/* Register window Modes */
#define M_DFF0		0
#define M_DFF1		1
#define M_CCHAN		2
#define M_SCSI		3
#define M_CFG		4
#define M_DST_SHIFT	4

#define MK_MODE(src, dst) ((src) | ((dst) << M_DST_SHIFT))
#define SET_MODE(src, dst)						\
	SET_SRC_MODE	src;						\
	SET_DST_MODE	dst;						\
	if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) {			\
		mvi	MK_MODE(src, dst) call set_mode_work_around;	\
	} else {							\
		mvi	MODE_PTR, MK_MODE(src, dst);			\
	}

#define RESTORE_MODE(mode)						\
	if ((ahd->bugs & AHD_SET_MODE_BUG) != 0) {			\
		mov	mode call set_mode_work_around;			\
	} else {							\
		mov	MODE_PTR, mode;					\
	}

#define SET_SEQINTCODE(code)						\
	if ((ahd->bugs & AHD_INTCOLLISION_BUG) != 0) {			\
		mvi	code call set_seqint_work_around;		\
	} else {							\
		mvi	SEQINTCODE, code;				\
	}

/*
 * Registers marked "dont_generate_debug_code" are not (yet) referenced
 * from the driver code, and this keyword inhibit generation
 * of debug code for them.
 *
 * REG_PRETTY_PRINT config will complain if dont_generate_debug_code
 * is added to the register which is referenced in the driver.
 * Unreferenced register with no dont_generate_debug_code will result
 * in dead code. No warning is issued.
 */

/*
 * Mode Pointer
 * Controls which of the 5, 512byte, address spaces should be used
 * as the source and destination of any register accesses in our
 * register window.
 */
register MODE_PTR {
	address			0x000
	access_mode	RW
	field	DST_MODE	0x70
	field	SRC_MODE	0x07
	mode_pointer
	dont_generate_debug_code
}

const SRC_MODE_SHIFT	0
const DST_MODE_SHIFT	4

/*
 * Host Interrupt Status
 */
register INTSTAT {
	address			0x001
	access_mode	RW
	field	HWERRINT	0x80
	field	BRKADRINT	0x40
	field	SWTMINT		0x20
	field	PCIINT		0x10
	field	SCSIINT		0x08
	field	SEQINT		0x04
	field	CMDCMPLT	0x02
	field	SPLTINT		0x01
	mask	INT_PEND 0xFF
}

/*
 * Sequencer Interrupt Code
 */
register SEQINTCODE {
	address			0x002
	access_mode	RW
	field {
		NO_SEQINT,			/* No seqint pending. */
		BAD_PHASE,			/* unknown scsi bus phase */
		SEND_REJECT,			/* sending a message reject */
		PROTO_VIOLATION, 		/* Protocol Violation */
		NO_MATCH,			/* no cmd match for reconnect */
		IGN_WIDE_RES,			/* Complex IGN Wide Res Msg */
		PDATA_REINIT,			/*
						 * Returned to data phase
						 * that requires data
						 * transfer pointers to be
						 * recalculated from the
						 * transfer residual.
						 */
		HOST_MSG_LOOP,			/*
						 * The bus is ready for the
						 * host to perform another
						 * message transaction.  This
						 * mechanism is used for things
						 * like sync/wide negotiation
						 * that require a kernel based
						 * message state engine.
						 */
		BAD_STATUS,			/* Bad status from target */
		DATA_OVERRUN,			/*
						 * Target attempted to write
						 * beyond the bounds of its
						 * command.
						 */
		MKMSG_FAILED,			/*
						 * Target completed command
						 * without honoring our ATN
						 * request to issue a message. 
						 */
		MISSED_BUSFREE,			/*
						 * The sequencer never saw
						 * the bus go free after
						 * either a command complete
						 * or disconnect message.
						 */
		DUMP_CARD_STATE,
		ILLEGAL_PHASE,
		INVALID_SEQINT,
		CFG4ISTAT_INTR,
		STATUS_OVERRUN,
		CFG4OVERRUN,
		ENTERING_NONPACK,
		TASKMGMT_FUNC_COMPLETE,		/*
						 * Task management function
						 * request completed with
						 * an expected busfree.
						 */
		TASKMGMT_CMD_CMPLT_OKAY,	/*
						 * A command with a non-zero
						 * task management function
						 * has completed via the normal
						 * command completion method
						 * for commands with a zero
						 * task management function.
						 * This happens when an attempt
						 * to abort a command loses
						 * the race for the command to
						 * complete normally.
						 */
		TRACEPOINT0,
		TRACEPOINT1,
		TRACEPOINT2,
		TRACEPOINT3,
		SAW_HWERR,
		BAD_SCB_STATUS
	}
	dont_generate_debug_code
}

/*
 * Clear Host Interrupt
 */
register CLRINT {
	address			0x003
	access_mode	WO
	count		19
	field	CLRHWERRINT	0x80 /* Rev B or greater */
	field	CLRBRKADRINT	0x40
	field	CLRSWTMINT	0x20
	field	CLRPCIINT	0x10
	field	CLRSCSIINT	0x08
	field	CLRSEQINT	0x04
	field	CLRCMDINT	0x02
	field	CLRSPLTINT	0x01
	dont_generate_debug_code
}

/*
 * Error Register
 */
register ERROR {
	address			0x004
	access_mode	RO
	field	CIOPARERR	0x80
	field	CIOACCESFAIL	0x40 /* Rev B or greater */
	field	MPARERR		0x20
	field	DPARERR		0x10
	field	SQPARERR	0x08
	field	ILLOPCODE	0x04
	field	DSCTMOUT	0x02
	dont_generate_debug_code
}

/*
 * Clear Error
 */
register CLRERR {
	address			0x004
	access_mode 	WO
	field	CLRCIOPARERR	0x80
	field	CLRCIOACCESFAIL	0x40 /* Rev B or greater */
	field	CLRMPARERR	0x20
	field	CLRDPARERR	0x10
	field	CLRSQPARERR	0x08
	field	CLRILLOPCODE	0x04
	field	CLRDSCTMOUT	0x02
}

/*
 * Host Control Register
 * Overall host control of the device.
 */
register HCNTRL {
	address			0x005
	access_mode	RW
	count		12
	field	SEQ_RESET	0x80 /* Rev B or greater */
	field	POWRDN		0x40
	field	SWINT		0x10
	field	SWTIMER_START_B	0x08 /* Rev B or greater */
	field	PAUSE		0x04
	field	INTEN		0x02
	field	CHIPRST		0x01
	field	CHIPRSTACK	0x01
	dont_generate_debug_code
}

/*
 * Host New SCB Queue Offset
 */
register HNSCB_QOFF {
	address			0x006
	access_mode	RW
	size		2
	count		2
	dont_generate_debug_code
}

/*
 * Host Empty SCB Queue Offset
 */
register HESCB_QOFF {
	address			0x008
	access_mode	RW
	count		2
	dont_generate_debug_code
}

/*
 * Host Mailbox
 */
register HS_MAILBOX {
	address			0x00B
	access_mode	RW
	mask	HOST_TQINPOS	0x80	/* Boundary at either 0 or 128 */
	mask	ENINT_COALESCE	0x40	/* Perform interrupt coalescing */
}

/*
 * Sequencer Interrupt Status
 */
register SEQINTSTAT {
	address			0x00C
	count		1
	access_mode	RO
	field	SEQ_SWTMRTO	0x10
	field	SEQ_SEQINT	0x08
	field	SEQ_SCSIINT	0x04
	field	SEQ_PCIINT	0x02
	field	SEQ_SPLTINT	0x01
}

/*
 * Clear SEQ Interrupt
 */
register CLRSEQINTSTAT {
	address			0x00C
	access_mode	WO
	field	CLRSEQ_SWTMRTO	0x10
	field	CLRSEQ_SEQINT	0x08
	field	CLRSEQ_SCSIINT	0x04
	field	CLRSEQ_PCIINT	0x02
	field	CLRSEQ_SPLTINT	0x01
	dont_generate_debug_code
}

/*
 * Software Timer
 */
register SWTIMER {
	address			0x00E
	access_mode	RW
	size		2
	dont_generate_debug_code
}

/*
 * SEQ New SCB Queue Offset
 */
register SNSCB_QOFF {
	address			0x010
	access_mode	RW
	size		2
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * SEQ Empty SCB Queue Offset
 */
register SESCB_QOFF {
	address			0x012
	count		2
	access_mode	RW
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * SEQ Done SCB Queue Offset
 */
register SDSCB_QOFF {
	address			0x014
	access_mode	RW
	modes		M_CCHAN
	size		2
	dont_generate_debug_code
}

/*
 * Queue Offset Control & Status
 */
register QOFF_CTLSTA {
	address			0x016
	access_mode	RW
	modes		M_CCHAN
	field	EMPTY_SCB_AVAIL	0x80
	field	NEW_SCB_AVAIL	0x40
	field	SDSCB_ROLLOVR	0x20
	field	HS_MAILBOX_ACT	0x10
	field	SCB_QSIZE	0x0F {
		SCB_QSIZE_4,
		SCB_QSIZE_8,
		SCB_QSIZE_16,
		SCB_QSIZE_32,
		SCB_QSIZE_64,
		SCB_QSIZE_128,
		SCB_QSIZE_256,
		SCB_QSIZE_512,
		SCB_QSIZE_1024,
		SCB_QSIZE_2048,
		SCB_QSIZE_4096,
		SCB_QSIZE_8192,
		SCB_QSIZE_16384
	}
	dont_generate_debug_code
}

/*
 * Interrupt Control
 */
register INTCTL {
	address			0x018
	access_mode	RW
	field	SWTMINTMASK	0x80
	field	SWTMINTEN	0x40
	field	SWTIMER_START	0x20
	field	AUTOCLRCMDINT	0x10
	field	PCIINTEN	0x08
	field	SCSIINTEN	0x04
	field	SEQINTEN	0x02
	field	SPLTINTEN	0x01
}

/*
 * Data FIFO Control
 */
register DFCNTRL {
	address			0x019
	access_mode	RW
	modes		M_DFF0, M_DFF1
	count		11
	field	PRELOADEN	0x80
	field	SCSIENWRDIS	0x40	/* Rev B only. */
	field	SCSIEN		0x20
	field	SCSIENACK	0x20
	field	HDMAEN		0x08
	field	HDMAENACK	0x08
	field	DIRECTION	0x04
	field	DIRECTIONACK	0x04
	field	FIFOFLUSH	0x02
	field	FIFOFLUSHACK	0x02
	field	DIRECTIONEN	0x01
}

/*
 * Device Space Command 0
 */
register DSCOMMAND0 {
	address			0x019
	count		1
	access_mode	RW
	modes		M_CFG
	field	CACHETHEN	0x80	/* Cache Threshold enable */
	field	DPARCKEN	0x40	/* Data Parity Check Enable */
	field	MPARCKEN	0x20	/* Memory Parity Check Enable */
	field	EXTREQLCK	0x10	/* External Request Lock */
	field	DISABLE_TWATE	0x02	/* Rev B or greater */
	field	CIOPARCKEN	0x01	/* Internal bus parity error enable */
	dont_generate_debug_code
}

/*
 * Data FIFO Status
 */
register DFSTATUS {
	address			0x01A
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	PRELOAD_AVAIL		0x80
	field	PKT_PRELOAD_AVAIL	0x40
	field	MREQPEND		0x10
	field	HDONE			0x08
	field	DFTHRESH		0x04
	field	FIFOFULL		0x02
	field	FIFOEMP			0x01
}

/*
 * S/G Cache Pointer
 */
register SG_CACHE_PRE {
	address			0x01B
	access_mode	WO
	modes		M_DFF0, M_DFF1
	field	SG_ADDR_MASK	0xf8
	field	ODD_SEG		0x04
	field	LAST_SEG	0x02
	dont_generate_debug_code
}

register SG_CACHE_SHADOW {
	address			0x01B
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	SG_ADDR_MASK	0xf8
	field	ODD_SEG		0x04
	field	LAST_SEG	0x02
	field	LAST_SEG_DONE	0x01
}

/*
 * Arbiter Control
 */
register ARBCTL {
	address			0x01B
	access_mode	RW
	modes		M_CFG
	field	RESET_HARB	0x80
	field	RETRY_SWEN	0x08
	field	USE_TIME	0x07
}

/*
 * Data Channel Host Address
 */
register HADDR {
	address			0x070
	access_mode	RW
	size		8
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * Host Overlay DMA Address
 */
register HODMAADR {
	address			0x070
	access_mode	RW
	size		8
	modes		M_SCSI
}

/*
 * PCI PLL Delay.
 */
register PLLDELAY {
	address			0x070
	access_mode	RW
	size		1
	modes		M_CFG
	field	SPLIT_DROP_REQ	0x80
}

/*
 * Data Channel Host Count
 */
register HCNT {
	address			0x078
	access_mode	RW
	size		3
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * Host Overlay DMA Count
 */
register HODMACNT {
	address			0x078
	access_mode	RW
	size		2
	modes		M_SCSI
}

/*
 * Host Overlay DMA Enable
 */
register HODMAEN {
	address			0x07A
	access_mode	RW
	modes		M_SCSI
}

/*
 * Scatter/Gather Host Address
 */
register SGHADDR {
	address			0x07C
	access_mode	RW
	size		8
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * SCB Host Address
 */
register SCBHADDR {
	address			0x07C
	access_mode	RW
	size		8
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * Scatter/Gather Host Count
 */
register SGHCNT {
	address			0x084
	access_mode	RW
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * SCB Host Count
 */
register SCBHCNT {
	address			0x084
	access_mode	RW
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * Data FIFO Threshold
 */
register DFF_THRSH {
	address			0x088
	access_mode	RW
	modes		M_CFG
	count		1
	field	WR_DFTHRSH	0x70 {
		WR_DFTHRSH_MIN,
		WR_DFTHRSH_25,
		WR_DFTHRSH_50,
		WR_DFTHRSH_63,
		WR_DFTHRSH_75,
		WR_DFTHRSH_85,
		WR_DFTHRSH_90,
		WR_DFTHRSH_MAX
	}
	field	RD_DFTHRSH	0x07 {
		RD_DFTHRSH_MIN,
		RD_DFTHRSH_25,
		RD_DFTHRSH_50,
		RD_DFTHRSH_63,
		RD_DFTHRSH_75,
		RD_DFTHRSH_85,
		RD_DFTHRSH_90,
		RD_DFTHRSH_MAX
	}
	dont_generate_debug_code
}

/*
 * ROM Address
 */
register ROMADDR {
	address			0x08A
	access_mode	RW
	size		3
}

/*
 * ROM Control
 */
register ROMCNTRL {
	address			0x08D
	access_mode	RW
	field	ROMOP		0xE0
	field	ROMSPD		0x18
	field	REPEAT		0x02
	field	RDY		0x01
}

/*
 * ROM Data
 */
register ROMDATA {
	address			0x08E
	access_mode	RW
}

/*
 * Data Channel Receive Message 0
 */
register DCHRXMSG0 {
	address			0x090
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field		CDNUM	0xF8
	field		CFNUM	0x07
}

/*
 * CMC Receive Message 0
 */
register CMCRXMSG0 {
	address			0x090
	access_mode	RO
	modes		M_CCHAN
	field		CDNUM	0xF8
	field		CFNUM	0x07
}

/*
 * Overlay Receive Message 0
 */
register OVLYRXMSG0 {
	address			0x090
	access_mode	RO
	modes		M_SCSI
	field		CDNUM	0xF8
	field		CFNUM	0x07
}

/*
 * Relaxed Order Enable
 */
register ROENABLE {
	address			0x090
	access_mode	RW
	modes		M_CFG
	field	MSIROEN		0x20
	field	OVLYROEN	0x10
	field	CMCROEN		0x08
	field	SGROEN		0x04
	field	DCH1ROEN	0x02
	field	DCH0ROEN	0x01
}

/*
 * Data Channel Receive Message 1
 */
register DCHRXMSG1 {
	address			0x091
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	CBNUM		0xFF
}

/*
 * CMC Receive Message 1
 */
register CMCRXMSG1 {
	address			0x091
	access_mode	RO
	modes		M_CCHAN
	field	CBNUM		0xFF
}

/*
 * Overlay Receive Message 1
 */
register OVLYRXMSG1 {
	address			0x091
	access_mode	RO
	modes		M_SCSI
	field	CBNUM		0xFF
}

/*
 * No Snoop Enable
 */
register NSENABLE {
	address			0x091
	access_mode	RW
	modes		M_CFG
	field	MSINSEN		0x20
	field	OVLYNSEN	0x10
	field	CMCNSEN		0x08
	field	SGNSEN		0x04
	field	DCH1NSEN	0x02
	field	DCH0NSEN	0x01
}

/*
 * Data Channel Receive Message 2
 */
register DCHRXMSG2 {
	address			0x092
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	MINDEX		0xFF
}

/*
 * CMC Receive Message 2
 */
register CMCRXMSG2 {
	address			0x092
	access_mode	RO
	modes		M_CCHAN
	field	MINDEX		0xFF
}

/*
 * Overlay Receive Message 2
 */
register OVLYRXMSG2 {
	address			0x092
	access_mode	RO
	modes		M_SCSI
	field	MINDEX		0xFF
}

/*
 * Outstanding Split Transactions
 */
register OST {
	address			0x092
	access_mode	RW
	modes		M_CFG
}

/*
 * Data Channel Receive Message 3
 */
register DCHRXMSG3 {
	address			0x093
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	MCLASS		0x0F
}

/*
 * CMC Receive Message 3
 */
register CMCRXMSG3 {
	address			0x093
	access_mode	RO
	modes		M_CCHAN
	field	MCLASS		0x0F
}

/*
 * Overlay Receive Message 3
 */
register OVLYRXMSG3 {
	address			0x093
	access_mode	RO
	modes		M_SCSI
	field	MCLASS		0x0F
}

/*
 * PCI-X Control
 */
register PCIXCTL {
	address			0x093
	access_mode	RW
	modes		M_CFG
	count		1
	field	SERRPULSE	0x80
	field	UNEXPSCIEN	0x20
	field	SPLTSMADIS	0x10
	field	SPLTSTADIS	0x08
	field	SRSPDPEEN	0x04
	field	TSCSERREN	0x02
	field	CMPABCDIS	0x01
	dont_generate_debug_code
}

/*
 * CMC Sequencer Byte Count
 */
register CMCSEQBCNT {
	address			0x094
	access_mode	RO
	modes		M_CCHAN
}

/*
 * Overlay Sequencer Byte Count
 */
register OVLYSEQBCNT {
	address			0x094
	access_mode	RO
	modes		M_SCSI
}

/*
 * Data Channel Sequencer Byte Count
 */
register DCHSEQBCNT {
	address			0x094
	access_mode	RO
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * Data Channel Split Status 0
 */
register DCHSPLTSTAT0 {
	address			0x096
	access_mode	RW
	modes		M_DFF0, M_DFF1
	count		2
	field	STAETERM	0x80
	field	SCBCERR		0x40
	field	SCADERR		0x20
	field	SCDATBUCKET	0x10
	field	CNTNOTCMPLT	0x08
	field	RXOVRUN		0x04
	field	RXSCEMSG	0x02
	field	RXSPLTRSP	0x01
	dont_generate_debug_code
}

/*
 * CMC Split Status 0
 */
register CMCSPLTSTAT0 {
	address			0x096
	access_mode	RW
	modes		M_CCHAN
	field	STAETERM	0x80
	field	SCBCERR		0x40
	field	SCADERR		0x20
	field	SCDATBUCKET	0x10
	field	CNTNOTCMPLT	0x08
	field	RXOVRUN		0x04
	field	RXSCEMSG	0x02
	field	RXSPLTRSP	0x01
}

/*
 * Overlay Split Status 0
 */
register OVLYSPLTSTAT0 {
	address			0x096
	access_mode	RW
	modes		M_SCSI
	field	STAETERM	0x80
	field	SCBCERR		0x40
	field	SCADERR		0x20
	field	SCDATBUCKET	0x10
	field	CNTNOTCMPLT	0x08
	field	RXOVRUN		0x04
	field	RXSCEMSG	0x02
	field	RXSPLTRSP	0x01
}

/*
 * Data Channel Split Status 1
 */
register DCHSPLTSTAT1 {
	address			0x097
	access_mode	RW
	modes		M_DFF0, M_DFF1
	count		2
	field	RXDATABUCKET	0x01
	dont_generate_debug_code
}

/*
 * CMC Split Status 1
 */
register CMCSPLTSTAT1 {
	address			0x097
	access_mode	RW
	modes		M_CCHAN
	field	RXDATABUCKET	0x01
}

/*
 * Overlay Split Status 1
 */
register OVLYSPLTSTAT1 {
	address			0x097
	access_mode	RW
	modes		M_SCSI
	field	RXDATABUCKET	0x01
}

/*
 * S/G Receive Message 0
 */
register SGRXMSG0 {
	address			0x098
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field		CDNUM	0xF8
	field		CFNUM	0x07
}

/*
 * S/G Receive Message 1
 */
register SGRXMSG1 {
	address			0x099
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	CBNUM		0xFF
}

/*
 * S/G Receive Message 2
 */
register SGRXMSG2 {
	address			0x09A
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	MINDEX		0xFF
}

/*
 * S/G Receive Message 3
 */
register SGRXMSG3 {
	address			0x09B
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	MCLASS		0x0F
}

/*
 * Slave Split Out Address 0
 */
register SLVSPLTOUTADR0 {
	address			0x098
	access_mode	RO
	modes		M_SCSI
	field	LOWER_ADDR	0x7F
}

/*
 * Slave Split Out Address 1
 */
register SLVSPLTOUTADR1 {
	address			0x099
	access_mode	RO
	modes		M_SCSI
	field	REQ_DNUM	0xF8
	field	REQ_FNUM	0x07
}

/*
 * Slave Split Out Address 2
 */
register SLVSPLTOUTADR2 {
	address			0x09A
	access_mode	RO
	modes		M_SCSI
	field	REQ_BNUM	0xFF
}

/*
 * Slave Split Out Address 3
 */
register SLVSPLTOUTADR3 {
	address			0x09B
	access_mode	RO
	modes		M_SCSI
	field	RLXORD		020
	field	TAG_NUM		0x1F
}

/*
 * SG Sequencer Byte Count
 */
register SGSEQBCNT {
	address			0x09C
	access_mode	RO
	modes		M_DFF0, M_DFF1
}

/*
 * Slave Split Out Attribute 0
 */
register SLVSPLTOUTATTR0 {
	address			0x09C
	access_mode	RO
	modes		M_SCSI
	field	LOWER_BCNT	0xFF
}

/*
 * Slave Split Out Attribute 1
 */
register SLVSPLTOUTATTR1 {
	address			0x09D
	access_mode	RO
	modes		M_SCSI
	field	CMPLT_DNUM	0xF8
	field	CMPLT_FNUM	0x07
}

/*
 * Slave Split Out Attribute 2
 */
register SLVSPLTOUTATTR2 {
	address			0x09E
	access_mode	RO
	size		2
	modes		M_SCSI
	field	CMPLT_BNUM	0xFF
}
/*
 * S/G Split Status 0
 */
register SGSPLTSTAT0 {
	address			0x09E
	access_mode	RW
	modes		M_DFF0, M_DFF1
	count		2
	field	STAETERM	0x80
	field	SCBCERR		0x40
	field	SCADERR		0x20
	field	SCDATBUCKET	0x10
	field	CNTNOTCMPLT	0x08
	field	RXOVRUN		0x04
	field	RXSCEMSG	0x02
	field	RXSPLTRSP	0x01
	dont_generate_debug_code
}

/*
 * S/G Split Status 1
 */
register SGSPLTSTAT1 {
	address			0x09F
	access_mode	RW
	modes		M_DFF0, M_DFF1
	count		2
	field	RXDATABUCKET	0x01
	dont_generate_debug_code
}

/*
 * Special Function
 */
register SFUNCT {
	address			0x09f
	access_mode	RW
	modes		M_CFG
	field	TEST_GROUP	0xF0
	field	TEST_NUM	0x0F
	dont_generate_debug_code
}

/*
 * Data FIFO 0 PCI Status 
 */
register DF0PCISTAT {
	address			0x0A0
	access_mode	RW
	modes		M_CFG
	count		1
	field	DPE		0x80
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	SCAAPERR	0x08
	field	RDPERR		0x04
	field	TWATERR		0x02
	field	DPR		0x01
	dont_generate_debug_code
}

/*
 * Data FIFO 1 PCI Status 
 */
register DF1PCISTAT {
	address			0x0A1
	access_mode	RW
	modes		M_CFG
	field	DPE		0x80
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	SCAAPERR	0x08
	field	RDPERR		0x04
	field	TWATERR		0x02
	field	DPR		0x01
}

/*
 * S/G PCI Status 
 */
register SGPCISTAT {
	address			0x0A2
	access_mode	RW
	modes		M_CFG
	field	DPE		0x80
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	SCAAPERR	0x08
	field	RDPERR		0x04
	field	DPR		0x01
}

/*
 * CMC PCI Status 
 */
register CMCPCISTAT {
	address			0x0A3
	access_mode	RW
	modes		M_CFG
	field	DPE		0x80
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	SCAAPERR	0x08
	field	RDPERR		0x04
	field	TWATERR		0x02
	field	DPR		0x01
}

/*
 * Overlay PCI Status 
 */
register OVLYPCISTAT {
	address			0x0A4
	access_mode	RW
	modes		M_CFG
	field	DPE		0x80
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	SCAAPERR	0x08
	field	RDPERR		0x04
	field	DPR		0x01
}

/*
 * PCI Status for MSI Master DMA Transfer
 */
register MSIPCISTAT {
	address			0x0A6
	access_mode	RW
	modes		M_CFG
	field	SSE		0x40
	field	RMA		0x20
	field	RTA		0x10
	field	CLRPENDMSI	0x08
	field	TWATERR		0x02
	field	DPR		0x01
}

/*
 * PCI Status for Target
 */
register TARGPCISTAT {
	address			0x0A7
	access_mode	RW
	modes		M_CFG
	count		5
	field	DPE		0x80
	field	SSE		0x40
	field	STA		0x08
	field	TWATERR		0x02
	dont_generate_debug_code
}

/*
 * LQ Packet In
 * The last LQ Packet received
 */
register LQIN {
	address			0x020
	access_mode	RW
	size		20
	count		2
	modes		M_DFF0, M_DFF1, M_SCSI
	dont_generate_debug_code
}

/*
 * SCB Type Pointer
 * SCB offset for Target Mode SCB type information
 */
register TYPEPTR {
	address			0x020
	access_mode	RW
	modes		M_CFG
}

/*
 * Queue Tag Pointer
 * SCB offset to the Two Byte tag identifier used for target mode.
 */
register TAGPTR {
	address			0x021
	access_mode	RW
	modes		M_CFG
}

/*
 * Logical Unit Number Pointer
 * SCB offset to the LSB (little endian) of the lun field.
 */
register LUNPTR {
	address			0x022
	access_mode	RW
	modes		M_CFG
	count		2
	dont_generate_debug_code
}

/*
 * Data Length Pointer
 * SCB offset for the 4 byte data length field in target mode.
 */
register DATALENPTR {
	address			0x023
	access_mode	RW
	modes		M_CFG
}

/*
 * Status Length Pointer
 * SCB offset to the two byte status field in target SCBs.
 */
register STATLENPTR {
	address			0x024
	access_mode	RW
	modes		M_CFG
}

/*
 * Command Length Pointer
 * Scb offset for the CDB length field in initiator SCBs.
 */
register CMDLENPTR {
	address			0x025
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Task Attribute Pointer
 * Scb offset for the byte field specifying the attribute byte
 * to be used in command packets.
 */ 
register ATTRPTR {
	address			0x026
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Task Management Flags Pointer
 * Scb offset for the byte field specifying the attribute flags
 * byte to be used in command packets.
 */ 
register FLAGPTR {
	address			0x027
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Command Pointer
 * Scb offset for the first byte in the CDB for initiator SCBs.
 */
register CMDPTR {
	address			0x028
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Queue Next Pointer
 * Scb offset for the 2 byte "next scb link".
 */
register QNEXTPTR {
	address			0x029
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * SCSI ID Pointer
 * Scb offset to the value to place in the SCSIID register
 * during target mode connections.
 */
register IDPTR {
	address			0x02A
	access_mode	RW
	modes		M_CFG
}

/*
 * Command Aborted Byte Pointer
 * Offset to the SCB flags field that includes the
 * "SCB aborted" status bit.
 */
register ABRTBYTEPTR {
	address			0x02B
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Command Aborted Bit Pointer
 * Bit offset in the SCB flags field for "SCB aborted" status.
 */
register ABRTBITPTR {
	address			0x02C
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Rev B or greater.
 */
register MAXCMDBYTES {
	address			0x02D
	access_mode	RW
	modes		M_CFG
}

/*
 * Rev B or greater.
 */
register MAXCMD2RCV {
	address			0x02E
	access_mode	RW
	modes		M_CFG
}

/*
 * Rev B or greater.
 */
register SHORTTHRESH {
	address			0x02F
	access_mode	RW
	modes		M_CFG
}

/*
 * Logical Unit Number Length
 * The length, in bytes, of the SCB lun field.
 */
register LUNLEN {
	address			0x030
	access_mode	RW
	modes		M_CFG
	count		2
	mask		ILUNLEN	0x0F
	mask		TLUNLEN	0xF0
	dont_generate_debug_code
}
const LUNLEN_SINGLE_LEVEL_LUN 0xF

/*
 * CDB Limit
 * The size, in bytes, of the embedded CDB field in initator SCBs.
 */
register CDBLIMIT {
	address			0x031
	access_mode	RW
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Maximum Commands
 * The maximum number of commands to issue during a
 * single packetized connection.
 */
register MAXCMD {
	address			0x032
	access_mode	RW
	modes		M_CFG
	count		9
	dont_generate_debug_code
}

/*
 * Maximum Command Counter
 * The number of commands already sent during this connection
 */
register MAXCMDCNT {
	address			0x033
	access_mode	RW
	modes		M_CFG
	dont_generate_debug_code
}

/*
 * LQ Packet Reserved Bytes
 * The bytes to be sent in the currently reserved fileds
 * of all LQ packets.
 */
register LQRSVD01 {
	address			0x034
	access_mode	RW
	modes		M_SCSI
}
register LQRSVD16 {
	address			0x035
	access_mode	RW
	modes		M_SCSI
}
register LQRSVD17 {
	address			0x036
	access_mode	RW
	modes		M_SCSI
}

/*
 * Command Reserved 0
 * The byte to be sent for the reserved byte 0 of
 * outgoing command packets.
 */
register CMDRSVD0 {
	address			0x037
	access_mode	RW
	modes		M_CFG
}

/*
 * LQ Manager Control 0
 */
register LQCTL0 {
	address			0x038
	access_mode	RW
	modes		M_CFG
	field	LQITARGCLT	0xC0
	field	LQIINITGCLT	0x30
	field	LQ0TARGCLT	0x0C
	field	LQ0INITGCLT	0x03
}

/*
 * LQ Manager Control 1
 */
register LQCTL1 {
	address			0x038
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	count		2
	field	PCI2PCI		0x04
	field	SINGLECMD	0x02
	field	ABORTPENDING	0x01
	dont_generate_debug_code
}

/*
 * LQ Manager Control 2
 */
register LQCTL2 {
	address			0x039
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	count		5
	field	LQIRETRY	0x80
	field	LQICONTINUE	0x40
	field	LQITOIDLE	0x20
	field	LQIPAUSE	0x10
	field	LQORETRY	0x08
	field	LQOCONTINUE	0x04
	field	LQOTOIDLE	0x02
	field	LQOPAUSE	0x01
	dont_generate_debug_code
}

/*
 * SCSI RAM BIST0
 */
register SCSBIST0 {
	address			0x039
	access_mode	RW
	modes		M_CFG
	field	GSBISTERR	0x40
	field	GSBISTDONE	0x20
	field	GSBISTRUN	0x10
	field	OSBISTERR	0x04
	field	OSBISTDONE	0x02
	field	OSBISTRUN	0x01
}

/*
 * SCSI Sequence Control0
 */
register SCSISEQ0 {
	address			0x03A
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	field	TEMODEO		0x80
	field	ENSELO		0x40
	field	ENARBO		0x20
	field	FORCEBUSFREE	0x10
	field	SCSIRSTO	0x01
}

/*
 * SCSI RAM BIST 1
 */
register SCSBIST1 {
	address			0x03A
	access_mode	RW
	modes		M_CFG
	field	NTBISTERR	0x04
	field	NTBISTDONE	0x02
	field	NTBISTRUN	0x01
}

/*
 * SCSI Sequence Control 1
 */
register SCSISEQ1 {
	address			0x03B
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	count		8
	field	MANUALCTL	0x40
	field	ENSELI		0x20
	field	ENRSELI		0x10
	field	MANUALP		0x0C
	field	ENAUTOATNP	0x02
	field	ALTSTIM		0x01
}

/*
 * SCSI Transfer Control 0
 */
register SXFRCTL0 {
	address			0x03C
	access_mode	RW
	modes		M_SCSI
	field	DFON		0x80
	field	DFPEXP		0x40
	field	BIOSCANCELEN	0x10
	field	SPIOEN		0x08
	dont_generate_debug_code
}

/*
 * SCSI Transfer Control 1
 */
register SXFRCTL1 {
	address			0x03D
	access_mode	RW
	modes		M_SCSI
	field	BITBUCKET	0x80
	field	ENSACHK		0x40
	field	ENSPCHK		0x20
	field	STIMESEL	0x18
	field	ENSTIMER	0x04
	field	ACTNEGEN	0x02
	field	STPWEN		0x01
	dont_generate_debug_code
}

/*
 * SCSI Transfer Control 2
 */
register SXFRCTL2 {
	address			0x03E
	access_mode	RW
	modes		M_SCSI
	field	AUTORSTDIS	0x10
	field	CMDDMAEN	0x08
	field	ASU		0x07
}

/*
 * SCSI Bus Initiator IDs
 * Bitmask of observed initiators on the bus.
 */
register BUSINITID {
	address			0x03C
	access_mode	RW
	modes		M_CFG
	size		2
}

/*
 * Data Length Counters
 * Packet byte counter.
 */
register DLCOUNT {
	address			0x03C
	access_mode	RW
	modes		M_DFF0, M_DFF1
	size		3
}

/*
 * Data FIFO Status
 */
register DFFSTAT {
	address			0x03F
	access_mode	RW
	modes		M_SCSI
	field	FIFO1FREE	0x20
	field	FIFO0FREE	0x10
	/*
	 * On the B, this enum only works
	 * in the read direction.  For writes,
	 * you must use the B version of the
	 * CURRFIFO_0 definition which is defined
	 * as a constant outside of this register
	 * definition to avoid confusing the
	 * register pretty printing code.
	 */
	enum	CURRFIFO	0x03 {
		CURRFIFO_0,
		CURRFIFO_1,
		CURRFIFO_NONE	0x3
	}
}

const B_CURRFIFO_0 0x2

/*
 * SCSI Bus Target IDs
 * Bitmask of observed targets on the bus.
 */
register BUSTARGID {
	address			0x03E
	access_mode	RW
	modes		M_CFG
	size		2
}

/*
 * SCSI Control Signal Out
 */
register SCSISIGO {
	address			0x040
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	field	CDO		0x80
	field	IOO		0x40
	field	MSGO		0x20
	field	ATNO		0x10
	field	SELO		0x08
	field	BSYO		0x04
	field	REQO		0x02
	field	ACKO		0x01
/*
 * Possible phases to write into SCSISIG0
 */
	enum	PHASE_MASK  CDO|IOO|MSGO {
		P_DATAOUT	0x0,
		P_DATAIN	IOO,
		P_DATAOUT_DT	P_DATAOUT|MSGO,
		P_DATAIN_DT	P_DATAIN|MSGO,
		P_COMMAND	CDO,
		P_MESGOUT	CDO|MSGO,
		P_STATUS	CDO|IOO,
		P_MESGIN	CDO|IOO|MSGO
	}
	dont_generate_debug_code
}

/*
 * SCSI Control Signal In
 */
register SCSISIGI {
	address			0x041
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	CDI		0x80
	field	IOI		0x40
	field	MSGI		0x20
	field	ATNI		0x10
	field	SELI		0x08
	field	BSYI		0x04
	field	REQI		0x02
	field	ACKI		0x01
/*
 * Possible phases in SCSISIGI
 */
	enum	PHASE_MASK  CDO|IOO|MSGO {
		P_DATAOUT	0x0,
		P_DATAIN	IOO,
		P_DATAOUT_DT	P_DATAOUT|MSGO,
		P_DATAIN_DT	P_DATAIN|MSGO,
		P_COMMAND	CDO,
		P_MESGOUT	CDO|MSGO,
		P_STATUS	CDO|IOO,
		P_MESGIN	CDO|IOO|MSGO
	}
}

/*
 * Multiple Target IDs
 * Bitmask of ids to respond as a target.
 */
register MULTARGID {
	address			0x040
	access_mode	RW
	modes		M_CFG
	size		2
	count		2
	dont_generate_debug_code
}

/*
 * SCSI Phase
 */
register SCSIPHASE {
	address			0x042
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	STATUS_PHASE	0x20
	field	COMMAND_PHASE	0x10
	field	MSG_IN_PHASE	0x08
	field	MSG_OUT_PHASE	0x04
	field	DATA_PHASE_MASK	0x03 {
		DATA_OUT_PHASE	0x01,
		DATA_IN_PHASE	0x02
	}
}

/*
 * SCSI Data 0 Image
 */
register SCSIDAT0_IMG {
	address			0x043
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
}

/*
 * SCSI Latched Data
 */
register SCSIDAT {
	address			0x044
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	size		2
	dont_generate_debug_code
}

/*
 * SCSI Data Bus
 */
register SCSIBUS {
	address			0x046
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	size		2
}

/*
 * Target ID In
 */
register TARGIDIN {
	address			0x048
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		2
	field	CLKOUT		0x80
	field	TARGID		0x0F
	dont_generate_debug_code
}

/*
 * Selection/Reselection ID
 * Upper four bits are the device id.  The ONEBIT is set when the re/selecting
 * device did not set its own ID.
 */
register SELID {
	address			0x049
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	field	SELID_MASK	0xf0
	field	ONEBIT		0x08
}

/*
 * SCSI Block Control
 * Controls Bus type and channel selection.  SELWIDE allows for the
 * coexistence of 8bit and 16bit devices on a wide bus.
 */
register SBLKCTL {
	address			0x04A
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	field	DIAGLEDEN	0x80
	field	DIAGLEDON	0x40
	field	ENAB40		0x08	/* LVD transceiver active */
	field	ENAB20		0x04	/* SE/HVD transceiver active */
	field	SELWIDE		0x02
	dont_generate_debug_code
}

/*
 * Option Mode
 */
register OPTIONMODE {
	address			0x04A
	access_mode	RW
	modes		M_CFG
	count		4
	field	BIOSCANCTL		0x80
	field	AUTOACKEN		0x40
	field	BIASCANCTL		0x20
	field	BUSFREEREV		0x10
	field	ENDGFORMCHK		0x04
	field	AUTO_MSGOUT_DE		0x02
	mask	OPTIONMODE_DEFAULTS	AUTO_MSGOUT_DE
	dont_generate_debug_code
}

/*
 * SCSI Status 0
 */
register SSTAT0	{
	address			0x04B
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	TARGET		0x80	/* Board acting as target */
	field	SELDO		0x40	/* Selection Done */
	field	SELDI		0x20	/* Board has been selected */
	field	SELINGO		0x10	/* Selection In Progress */
	field	IOERR		0x08	/* LVD Tranceiver mode changed */
	field	OVERRUN		0x04	/* SCSI Offset overrun detected */
	field	SPIORDY		0x02	/* SCSI PIO Ready */
	field	ARBDO		0x01	/* Arbitration Done Out */
}

/*
 * Clear SCSI Interrupt 0
 * Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT0.
 */
register CLRSINT0 {
	address			0x04B
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	CLRSELDO	0x40
	field	CLRSELDI	0x20
	field	CLRSELINGO	0x10
	field	CLRIOERR	0x08
	field	CLROVERRUN	0x04
	field	CLRSPIORDY	0x02
	field	CLRARBDO	0x01
	dont_generate_debug_code
}

/*
 * SCSI Interrupt Mode 0
 * Setting any bit will enable the corresponding function
 * in SIMODE0 to interrupt via the IRQ pin.
 */
register SIMODE0 {
	address			0x04B
	access_mode	RW
	modes		M_CFG
	count		8
	field	ENSELDO		0x40
	field	ENSELDI		0x20
	field	ENSELINGO	0x10
	field	ENIOERR		0x08
	field	ENOVERRUN	0x04
	field	ENSPIORDY	0x02
	field	ENARBDO		0x01
}

/*
 * SCSI Status 1
 */
register SSTAT1 {
	address			0x04C
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	SELTO		0x80
	field	ATNTARG 	0x40
	field	SCSIRSTI	0x20
	field	PHASEMIS	0x10
	field	BUSFREE		0x08
	field	SCSIPERR	0x04
	field	STRB2FAST	0x02
	field	REQINIT		0x01
}

/*
 * Clear SCSI Interrupt 1
 * Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT1.
 */
register CLRSINT1 {
	address			0x04C
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	CLRSELTIMEO	0x80
	field	CLRATNO		0x40
	field	CLRSCSIRSTI	0x20
	field	CLRBUSFREE	0x08
	field	CLRSCSIPERR	0x04
	field	CLRSTRB2FAST	0x02
	field	CLRREQINIT	0x01
	dont_generate_debug_code
}

/*
 * SCSI Status 2
 */
register SSTAT2 {
	address			0x04d
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	BUSFREETIME	0xc0 {
		BUSFREE_LQO	0x40,
		BUSFREE_DFF0	0x80,
		BUSFREE_DFF1	0xC0
	}
	field	NONPACKREQ	0x20
	field	EXP_ACTIVE	0x10	/* SCSI Expander Active */
	field	BSYX		0x08	/* Busy Expander */
	field	WIDE_RES	0x04	/* Modes 0 and 1 only */
	field	SDONE		0x02	/* Modes 0 and 1 only */
	field	DMADONE		0x01	/* Modes 0 and 1 only */
}

/*
 * Clear SCSI Interrupt 2
 */
register CLRSINT2 {
	address			0x04D
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	CLRNONPACKREQ	0x20
	field	CLRWIDE_RES	0x04	/* Modes 0 and 1 only */
	field	CLRSDONE	0x02	/* Modes 0 and 1 only */
	field	CLRDMADONE	0x01	/* Modes 0 and 1 only */
	dont_generate_debug_code
}

/*
 * SCSI Interrupt Mode 2
 */
register SIMODE2 {
	address			0x04D
	access_mode	RW
	modes		M_CFG
	field	ENWIDE_RES	0x04
	field	ENSDONE		0x02
	field	ENDMADONE	0x01
}

/*
 * Physical Error Diagnosis
 */
register PERRDIAG {
	address			0x04E
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		3
	field	HIZERO		0x80
	field	HIPERR		0x40
	field	PREVPHASE	0x20
	field	PARITYERR	0x10
	field	AIPERR		0x08
	field	CRCERR		0x04
	field	DGFORMERR	0x02
	field	DTERR		0x01
}

/*
 * LQI Manager Current State
 */
register LQISTATE {
	address			0x04E
	access_mode	RO
	modes		M_CFG
	count		6
	dont_generate_debug_code
}

/*
 * SCSI Offset Count
 */
register SOFFCNT {
	address			0x04F
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		1
}

/*
 * LQO Manager Current State
 */
register LQOSTATE {
	address			0x04F
	access_mode	RO
	modes		M_CFG
	count		2
	dont_generate_debug_code
}

/*
 * LQI Manager Status
 */
register LQISTAT0 {
	address			0x050
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		2
	field	LQIATNQAS	0x20
	field	LQICRCT1	0x10
	field	LQICRCT2	0x08
	field	LQIBADLQT	0x04
	field	LQIATNLQ	0x02
	field	LQIATNCMD	0x01
}

/*
 * Clear LQI Interrupts 0
 */
register CLRLQIINT0 {
	address			0x050
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		1
	field	CLRLQIATNQAS	0x20
	field	CLRLQICRCT1	0x10
	field	CLRLQICRCT2	0x08
	field	CLRLQIBADLQT	0x04
	field	CLRLQIATNLQ	0x02
	field	CLRLQIATNCMD	0x01
	dont_generate_debug_code
}

/*
 * LQI Manager Interrupt Mode 0
 */
register LQIMODE0 {
	address			0x050
	access_mode	RW
	modes		M_CFG
	count		3
	field	ENLQIATNQASK	0x20
	field	ENLQICRCT1	0x10
	field	ENLQICRCT2	0x08
	field	ENLQIBADLQT	0x04
	field	ENLQIATNLQ	0x02
	field	ENLQIATNCMD	0x01
	dont_generate_debug_code
}

/*
 * LQI Manager Status 1
 */
register LQISTAT1 {
	address			0x051
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		3
	field	LQIPHASE_LQ	0x80
	field	LQIPHASE_NLQ	0x40
	field	LQIABORT	0x20
	field	LQICRCI_LQ	0x10
	field	LQICRCI_NLQ	0x08
	field	LQIBADLQI	0x04
	field	LQIOVERI_LQ	0x02
	field	LQIOVERI_NLQ	0x01
}

/*
 * Clear LQI Manager Interrupts1
 */
register CLRLQIINT1 {
	address			0x051
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		4
	field	CLRLQIPHASE_LQ	0x80
	field	CLRLQIPHASE_NLQ	0x40
	field	CLRLIQABORT	0x20
	field	CLRLQICRCI_LQ	0x10
	field	CLRLQICRCI_NLQ	0x08
	field	CLRLQIBADLQI	0x04
	field	CLRLQIOVERI_LQ	0x02
	field	CLRLQIOVERI_NLQ	0x01
	dont_generate_debug_code
}

/*
 * LQI Manager Interrupt Mode 1
 */
register LQIMODE1 {
	address			0x051
	access_mode	RW
	modes		M_CFG
	count		4
	field	ENLQIPHASE_LQ	0x80	/* LQIPHASE1 */
	field	ENLQIPHASE_NLQ	0x40	/* LQIPHASE2 */
	field	ENLIQABORT	0x20
	field	ENLQICRCI_LQ	0x10	/* LQICRCI1 */
	field	ENLQICRCI_NLQ	0x08	/* LQICRCI2 */
	field	ENLQIBADLQI	0x04
	field	ENLQIOVERI_LQ	0x02	/* LQIOVERI1 */
	field	ENLQIOVERI_NLQ	0x01	/* LQIOVERI2 */
	dont_generate_debug_code
}

/*
 * LQI Manager Status 2
 */
register LQISTAT2 {
	address			0x052
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	PACKETIZED	0x80
	field	LQIPHASE_OUTPKT	0x40
	field	LQIWORKONLQ	0x20
	field	LQIWAITFIFO	0x10
	field	LQISTOPPKT	0x08
	field	LQISTOPLQ	0x04
	field	LQISTOPCMD	0x02
	field	LQIGSAVAIL	0x01
}

/*
 * SCSI Status 3
 */
register SSTAT3 {
	address			0x053
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		3
	field	NTRAMPERR	0x02
	field	OSRAMPERR	0x01
}

/*
 * Clear SCSI Status 3
 */
register CLRSINT3 {
	address			0x053
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		3
	field	CLRNTRAMPERR	0x02
	field	CLROSRAMPERR	0x01
	dont_generate_debug_code
}

/*
 * SCSI Interrupt Mode 3
 */
register SIMODE3 {
	address			0x053
	access_mode	RW
	modes		M_CFG
	count		4
	field	ENNTRAMPERR	0x02
	field	ENOSRAMPERR	0x01
	dont_generate_debug_code
}

/*
 * LQO Manager Status 0
 */
register LQOSTAT0 {
	address			0x054
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		2
	field	LQOTARGSCBPERR	0x10
	field	LQOSTOPT2	0x08
	field	LQOATNLQ	0x04
	field	LQOATNPKT	0x02
	field	LQOTCRC		0x01
}

/*
 * Clear LQO Manager interrupt 0
 */
register CLRLQOINT0 {
	address			0x054
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		3
	field	CLRLQOTARGSCBPERR	0x10
	field	CLRLQOSTOPT2		0x08
	field	CLRLQOATNLQ		0x04
	field	CLRLQOATNPKT		0x02
	field	CLRLQOTCRC		0x01
	dont_generate_debug_code
}

/*
 * LQO Manager Interrupt Mode 0
 */
register LQOMODE0 {
	address			0x054
	access_mode	RW
	modes		M_CFG
	count		4
	field	ENLQOTARGSCBPERR	0x10
	field	ENLQOSTOPT2		0x08
	field	ENLQOATNLQ		0x04
	field	ENLQOATNPKT		0x02
	field	ENLQOTCRC		0x01
	dont_generate_debug_code
}

/*
 * LQO Manager Status 1
 */
register LQOSTAT1 {
	address			0x055
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	LQOINITSCBPERR	0x10
	field	LQOSTOPI2	0x08
	field	LQOBADQAS	0x04
	field	LQOBUSFREE	0x02
	field	LQOPHACHGINPKT	0x01
}

/*
 * Clear LOQ Interrupt 1
 */
register CLRLQOINT1 {
	address			0x055
	access_mode	WO
	modes		M_DFF0, M_DFF1, M_SCSI
	count		7
	field	CLRLQOINITSCBPERR	0x10
	field	CLRLQOSTOPI2		0x08
	field	CLRLQOBADQAS		0x04
	field	CLRLQOBUSFREE		0x02
	field	CLRLQOPHACHGINPKT	0x01
	dont_generate_debug_code
}

/*
 * LQO Manager Interrupt Mode 1
 */
register LQOMODE1 {
	address			0x055
	access_mode	RW
	modes		M_CFG
	count		4
	field	ENLQOINITSCBPERR	0x10
	field	ENLQOSTOPI2		0x08
	field	ENLQOBADQAS		0x04
	field	ENLQOBUSFREE		0x02
	field	ENLQOPHACHGINPKT	0x01
	dont_generate_debug_code
}

/*
 * LQO Manager Status 2
 */
register LQOSTAT2 {
	address			0x056
	access_mode	RO
	modes		M_DFF0, M_DFF1, M_SCSI
	field	LQOPKT		0xE0
	field	LQOWAITFIFO	0x10
	field	LQOPHACHGOUTPKT	0x02	/* outside of packet boundaries. */
	field	LQOSTOP0	0x01	/* Stopped after sending all packets */
}

/*
 * Output Synchronizer Space Count
 */
register OS_SPACE_CNT {
	address			0x056
	access_mode	RO
	modes		M_CFG
	count		2
	dont_generate_debug_code
}

/*
 * SCSI Interrupt Mode 1
 * Setting any bit will enable the corresponding function
 * in SIMODE1 to interrupt via the IRQ pin.
 */
register SIMODE1 {
	address			0x057
	access_mode	RW
	modes		M_DFF0, M_DFF1, M_SCSI
	field	ENSELTIMO	0x80
	field	ENATNTARG	0x40
	field	ENSCSIRST	0x20
	field	ENPHASEMIS	0x10
	field	ENBUSFREE	0x08
	field	ENSCSIPERR	0x04
	field	ENSTRB2FAST	0x02
	field	ENREQINIT	0x01
}

/*
 * Good Status FIFO
 */
register GSFIFO {
	address			0x058
	access_mode	RO
	size		2
	modes		M_DFF0, M_DFF1, M_SCSI
	dont_generate_debug_code
}

/*
 * Data FIFO SCSI Transfer Control
 */
register DFFSXFRCTL {
	address			0x05A
	access_mode	RW
	modes		M_DFF0, M_DFF1
	field	DFFBITBUCKET	0x08
	field	CLRSHCNT	0x04
	field	CLRCHN		0x02
	field	RSTCHN		0x01
}

/*
 * Next SCSI Control Block
 */
register NEXTSCB {
	address			0x05A
	access_mode	RW
	size		2
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * LQO SCSI Control
 * (Rev B only.)
 */
register LQOSCSCTL {
	address			0x05A
	access_mode	RW
	size		1
	modes		M_CFG
	count		1
	field		LQOH2A_VERSION	0x80
	field		LQOBUSETDLY	0x40
	field		LQONOHOLDLACK	0x02
	field		LQONOCHKOVER	0x01
	dont_generate_debug_code
}

/*
 * SEQ Interrupts
 */
register SEQINTSRC {
	address			0x05B
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	CTXTDONE	0x40
	field	SAVEPTRS	0x20
	field	CFG4DATA	0x10
	field	CFG4ISTAT	0x08
	field	CFG4TSTAT	0x04
	field	CFG4ICMD	0x02
	field	CFG4TCMD	0x01
}

/*
 * Clear Arp Interrupts
 */
register CLRSEQINTSRC {
	address			0x05B
	access_mode	WO
	modes		M_DFF0, M_DFF1
	field	CLRCTXTDONE	0x40
	field	CLRSAVEPTRS	0x20
	field	CLRCFG4DATA	0x10
	field	CLRCFG4ISTAT	0x08
	field	CLRCFG4TSTAT	0x04
	field	CLRCFG4ICMD	0x02
	field	CLRCFG4TCMD	0x01
	dont_generate_debug_code
}

/*
 * SEQ Interrupt Enabled (Shared)
 */
register SEQIMODE {
	address			0x05C
	access_mode	RW
	modes		M_DFF0, M_DFF1
	field	ENCTXTDONE	0x40
	field	ENSAVEPTRS	0x20
	field	ENCFG4DATA	0x10
	field	ENCFG4ISTAT	0x08
	field	ENCFG4TSTAT	0x04
	field	ENCFG4ICMD	0x02
	field	ENCFG4TCMD	0x01
}

/*
 * Current SCSI Control Block
 */
register CURRSCB {
	address			0x05C
	access_mode	RW
	size		2
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * Data FIFO Status
 */
register MDFFSTAT {
	address			0x05D
	access_mode	RO
	modes		M_DFF0, M_DFF1
	field	SHCNTNEGATIVE	0x40 /* Rev B or higher */
	field	SHCNTMINUS1	0x20 /* Rev B or higher */
	field	LASTSDONE	0x10
	field	SHVALID		0x08
	field	DLZERO		0x04 /* FIFO data ends on packet boundary. */
	field	DATAINFIFO	0x02
	field	FIFOFREE	0x01
}

/*
 * CRC Control
 */
register CRCCONTROL {
	address			0x05d
	access_mode	RW
	modes		M_CFG
	field	CRCVALCHKEN		0x40
}

/*
 * SCSI Test Control
 */
register SCSITEST {
	address			0x05E
	access_mode	RW
	modes		M_CFG
	field	CNTRTEST	0x08
	field	SEL_TXPLL_DEBUG	0x04
}

/*
 * Data FIFO Queue Tag
 */
register DFFTAG {
	address			0x05E
	access_mode	RW
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * Last SCSI Control Block
 */
register LASTSCB {
	address			0x05E
	access_mode	RW
	size		2
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * SCSI I/O Cell Power-down Control
 */
register IOPDNCTL {
	address			0x05F
	access_mode	RW
	modes		M_CFG
	field	DISABLE_OE	0x80
	field	PDN_IDIST	0x04
	field	PDN_DIFFSENSE	0x01
}

/*
 * Shadow Host Address.
 */
register SHADDR {
	address			0x060
	access_mode	RO
	size		8
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * Data Group CRC Interval.
 */
register DGRPCRCI {
	address			0x060
	access_mode	RW
	size		2
	modes		M_CFG
}

/*
 * Data Transfer Negotiation Address
 */
register NEGOADDR {
	address			0x060
	access_mode	RW
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * Data Transfer Negotiation Data - Period Byte
 */
register NEGPERIOD {
	address			0x061
	access_mode	RW
	modes		M_SCSI
	count		1
	dont_generate_debug_code
}

/*
 * Packetized CRC Interval
 */
register PACKCRCI {
	address			0x062
	access_mode	RW
	size		2
	modes		M_CFG
}

/*
 * Data Transfer Negotiation Data - Offset Byte
 */
register NEGOFFSET {
	address			0x062
	access_mode	RW
	modes		M_SCSI
	count		1
	dont_generate_debug_code
}

/*
 * Data Transfer Negotiation Data - PPR Options
 */
register NEGPPROPTS {
	address			0x063
	access_mode	RW
	modes		M_SCSI
	count		1
	field	PPROPT_PACE	0x08
	field	PPROPT_QAS	0x04
	field	PPROPT_DT	0x02
	field	PPROPT_IUT	0x01
	dont_generate_debug_code
}

/*
 * Data Transfer Negotiation Data -  Connection Options
 */
register NEGCONOPTS {
	address			0x064
	access_mode	RW
	modes		M_SCSI
	field	ENSNAPSHOT	0x40
	field	RTI_WRTDIS	0x20
	field	RTI_OVRDTRN	0x10
	field	ENSLOWCRC	0x08
	field	ENAUTOATNI	0x04
	field	ENAUTOATNO	0x02
	field	WIDEXFER	0x01
	dont_generate_debug_code
}

/*
 * Negotiation Table Annex Column Index.
 */
register ANNEXCOL {
	address			0x065
	access_mode	RW
	modes		M_SCSI
	count		7
	dont_generate_debug_code
}

/*
 * SCSI Check
 * (Rev. B only)
 */
register SCSCHKN {
	address			0x066
	access_mode	RW
	modes		M_CFG
	count		1
	field	BIDICHKDIS	0x80
	field	STSELSKIDDIS	0x40
	field	CURRFIFODEF	0x20
	field	WIDERESEN	0x10
	field	SDONEMSKDIS	0x08
	field	DFFACTCLR	0x04
	field	SHVALIDSTDIS	0x02
	field	LSTSGCLRDIS	0x01
	dont_generate_debug_code
}

const AHD_ANNEXCOL_PER_DEV0	4
const AHD_NUM_PER_DEV_ANNEXCOLS	4
const AHD_ANNEXCOL_PRECOMP_SLEW	4
const	AHD_PRECOMP_MASK	0x07
const	AHD_PRECOMP_SHIFT	0
const	AHD_PRECOMP_CUTBACK_17	0x04
const	AHD_PRECOMP_CUTBACK_29	0x06
const	AHD_PRECOMP_CUTBACK_37	0x07
const	AHD_SLEWRATE_MASK	0x78
const	AHD_SLEWRATE_SHIFT	3
/*
 * Rev A has only a single bit (high bit of field) of slew adjustment.
 * Rev B has 4 bits.  The current default happens to be the same for both.
 */
const	AHD_SLEWRATE_DEF_REVA	0x08
const	AHD_SLEWRATE_DEF_REVB	0x08

/* Rev A does not have any amplitude setting. */
const AHD_ANNEXCOL_AMPLITUDE	6
const	AHD_AMPLITUDE_MASK	0x7
const	AHD_AMPLITUDE_SHIFT	0
const	AHD_AMPLITUDE_DEF	0x7

/*
 * Negotiation Table Annex Data Port.
 */
register ANNEXDAT {
	address			0x066
	access_mode	RW
	modes		M_SCSI
	count		3
	dont_generate_debug_code
}

/*
 * Initiator's Own Id.
 * The SCSI ID to use for Selection Out and seen during a reselection..
 */
register IOWNID {
	address			0x067
	access_mode	RW
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * 960MHz Phase-Locked Loop Control 0
 */
register PLL960CTL0 {
	address			0x068
	access_mode	RW
	modes		M_CFG
	field	PLL_VCOSEL	0x80
	field	PLL_PWDN	0x40
	field	PLL_NS		0x30
	field	PLL_ENLUD	0x08
	field	PLL_ENLPF	0x04
	field	PLL_DLPF	0x02
	field	PLL_ENFBM	0x01
}

/*
 * Target Own Id
 */
register TOWNID {
	address			0x069
	access_mode	RW
	modes		M_SCSI
	count		2
	dont_generate_debug_code
}

/*
 * 960MHz Phase-Locked Loop Control 1
 */
register PLL960CTL1 {
	address			0x069
	access_mode	RW
	modes		M_CFG
	field	PLL_CNTEN	0x80
	field	PLL_CNTCLR	0x40
	field	PLL_RST		0x01
}

/*
 * Expander Signature
 */
register XSIG {
	address			0x06A
	access_mode	RW
	modes		M_SCSI
}

/*
 * Shadow Byte Count
 */
register SHCNT {
	address			0x068
	access_mode	RW
	size		3
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * Selection Out ID
 */
register SELOID {
	address			0x06B
	access_mode	RW
	modes		M_SCSI
}

/*
 * 960-MHz Phase-Locked Loop Test Count
 */
register PLL960CNT0 {
	address			0x06A
	access_mode	RO
	size		2
	modes		M_CFG
}

/*
 * 400-MHz Phase-Locked Loop Control 0
 */
register PLL400CTL0 {
	address			0x06C
	access_mode	RW
	modes		M_CFG
	field	PLL_VCOSEL	0x80
	field	PLL_PWDN	0x40
	field	PLL_NS		0x30
	field	PLL_ENLUD	0x08
	field	PLL_ENLPF	0x04
	field	PLL_DLPF	0x02
	field	PLL_ENFBM	0x01
}

/*
 * Arbitration Fairness
 */
register FAIRNESS {
	address			0x06C
	access_mode	RW
	size		2
	modes		M_SCSI
}

/*
 * 400-MHz Phase-Locked Loop Control 1
 */
register PLL400CTL1 {
	address			0x06D
	access_mode	RW
	modes		M_CFG
	field	PLL_CNTEN	0x80
	field	PLL_CNTCLR	0x40
	field	PLL_RST		0x01
}

/*
 * Arbitration Unfairness
 */
register UNFAIRNESS {
	address			0x06E
	access_mode	RW
	size		2
	modes		M_SCSI
}

/*
 * 400-MHz Phase-Locked Loop Test Count
 */
register PLL400CNT0 {
	address			0x06E
	access_mode	RO
	size		2
	modes		M_CFG
}

/*
 * SCB Page Pointer
 */
register SCBPTR {
	address			0x0A8
	access_mode	RW
	size		2
	modes		M_DFF0, M_DFF1, M_CCHAN, M_SCSI
	dont_generate_debug_code
}

/*
 * CMC SCB Array Count
 * Number of bytes to transfer between CMC SCB memory and SCBRAM.
 * Transfers must be 8byte aligned and sized.
 */
register CCSCBACNT {
	address			0x0AB
	access_mode	RW
	modes		M_CCHAN
}

/*
 * SCB Autopointer
 * SCB-Next Address Snooping logic.  When an SCB is transferred to
 * the card, the next SCB address to be used by the CMC array can
 * be autoloaded from that transfer.
 */
register SCBAUTOPTR {
	address			0x0AB
	access_mode	RW
	modes		M_CFG
	count		1
	field	AUSCBPTR_EN	0x80
	field	SCBPTR_ADDR	0x38
	field	SCBPTR_OFF	0x07
	dont_generate_debug_code
}

/*
 * CMC SG Ram Address Pointer
 */
register CCSGADDR {
	address			0x0AC
	access_mode	RW
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * CMC SCB RAM Address Pointer
 */
register CCSCBADDR {
	address			0x0AC
	access_mode	RW
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * CMC SCB Ram Back-up Address Pointer
 * Indicates the true stop location of transfers halted prior
 * to SCBHCNT going to 0.
 */
register CCSCBADR_BK {
	address			0x0AC
	access_mode	RO
	modes		M_CFG
}

/*
 * CMC SG Control
 */
register CCSGCTL {
	address			0x0AD
	access_mode	RW
	modes		M_DFF0, M_DFF1
	field	CCSGDONE	0x80
	field	SG_CACHE_AVAIL	0x10
	field	CCSGENACK	0x08
	mask	CCSGEN		0x0C
	field	SG_FETCH_REQ	0x02
	field	CCSGRESET	0x01
}

/*
 * CMD SCB Control
 */
register CCSCBCTL {
	address			0x0AD
	access_mode	RW
	modes		M_CCHAN
	field	CCSCBDONE	0x80
	field	ARRDONE		0x40
	field	CCARREN		0x10
	field	CCSCBEN		0x08
	field	CCSCBDIR	0x04
	field	CCSCBRESET	0x01
}

/*
 * CMC Ram BIST
 */
register CMC_RAMBIST {
	address			0x0AD
	access_mode	RW
	modes		M_CFG
	field	SG_ELEMENT_SIZE		0x80
	field	SCBRAMBIST_FAIL		0x40
	field	SG_BIST_FAIL		0x20
	field	SG_BIST_EN		0x10
	field	CMC_BUFFER_BIST_FAIL	0x02
	field	CMC_BUFFER_BIST_EN	0x01
}

/*
 * CMC SG RAM Data Port
 */
register CCSGRAM {
	address			0x0B0
	access_mode	RW
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * CMC SCB RAM Data Port
 */
register CCSCBRAM {
	address			0x0B0
	access_mode	RW
	modes		M_CCHAN
	dont_generate_debug_code
}

/*
 * Flex DMA Address.
 */
register FLEXADR {
	address			0x0B0
	access_mode	RW
	size		3
	modes		M_SCSI
}

/*
 * Flex DMA Byte Count
 */
register FLEXCNT {
	address			0x0B3
	access_mode	RW
	size		2
	modes		M_SCSI
}

/*
 * Flex DMA Status
 */
register FLEXDMASTAT {
	address			0x0B5
	access_mode	RW
	modes		M_SCSI
	field	FLEXDMAERR	0x02
	field	FLEXDMADONE	0x01
}

/*
 * Flex DMA Data Port
 */
register FLEXDATA {
	address			0x0B6
	access_mode	RW
	modes		M_SCSI
}

/*
 * Board Data
 */
register BRDDAT {
	address			0x0B8
	access_mode	RW
	modes		M_SCSI
	count		2
	dont_generate_debug_code
}

/*
 * Board Control
 */
register BRDCTL {
	address			0x0B9
	access_mode	RW
	modes		M_SCSI
	count		7
	field	FLXARBACK	0x80
	field	FLXARBREQ	0x40
	field	BRDADDR		0x38
	field	BRDEN		0x04
	field	BRDRW		0x02
	field	BRDSTB		0x01
	dont_generate_debug_code
}

/*
 * Serial EEPROM Address
 */
register SEEADR {
	address			0x0BA
	access_mode	RW
	modes		M_SCSI
	count		4
	dont_generate_debug_code
}

/*
 * Serial EEPROM Data
 */
register SEEDAT {
	address			0x0BC
	access_mode	RW
	size		2
	modes		M_SCSI
	count		4
	dont_generate_debug_code
}

/*
 * Serial EEPROM Status
 */
register SEESTAT {
	address			0x0BE
	access_mode	RO
	modes		M_SCSI
	count		1
	field	INIT_DONE	0x80
	field	SEEOPCODE	0x70
	field	LDALTID_L	0x08
	field	SEEARBACK	0x04
	field	SEEBUSY		0x02
	field	SEESTART	0x01
	dont_generate_debug_code
}

/*
 * Serial EEPROM Control
 */
register SEECTL {
	address			0x0BE
	access_mode	RW
	modes		M_SCSI
	count		4
	field	SEEOPCODE	0x70 {
		SEEOP_ERASE	0x70,
		SEEOP_READ	0x60,
		SEEOP_WRITE	0x50,
	/*
	 * The following four commands use special
	 * addresses for differentiation.
	 */
		SEEOP_ERAL	0x40
	}
	mask	SEEOP_EWEN	0x40
	mask	SEEOP_WALL	0x40
	mask	SEEOP_EWDS	0x40
	field	SEERST		0x02
	field	SEESTART	0x01
	dont_generate_debug_code
}

const SEEOP_ERAL_ADDR	0x80
const SEEOP_EWEN_ADDR	0xC0
const SEEOP_WRAL_ADDR	0x40
const SEEOP_EWDS_ADDR	0x00

/*
 * SCB Counter
 */
register SCBCNT {
	address			0x0BF
	access_mode	RW
	modes		M_SCSI
	dont_generate_debug_code
}

/*
 * Data FIFO Write Address
 * Pointer to the next QWD location to be written to the data FIFO.
 */
register DFWADDR {
	address			0x0C0
	access_mode	RW
	size		2
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * DSP Filter Control
 */
register DSPFLTRCTL {
	address			0x0C0
	access_mode	RW
	modes		M_CFG
	field	FLTRDISABLE	0x20
	field	EDGESENSE	0x10
	field	DSPFCNTSEL	0x0F
}

/*
 * DSP Data Channel Control
 */
register DSPDATACTL {
	address			0x0C1
	access_mode	RW
	modes		M_CFG
	count		3
	field	BYPASSENAB	0x80
	field	DESQDIS		0x10
	field	RCVROFFSTDIS	0x04
	field	XMITOFFSTDIS	0x02
	dont_generate_debug_code
}

/*
 * Data FIFO Read Address
 * Pointer to the next QWD location to be read from the data FIFO.
 */
register DFRADDR {
	address			0x0C2
	access_mode	RW
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * DSP REQ Control
 */
register DSPREQCTL {
	address			0x0C2
	access_mode	RW
	modes		M_CFG
	field	MANREQCTL	0xC0
	field	MANREQDLY	0x3F
}

/*
 * DSP ACK Control
 */
register DSPACKCTL {
	address			0x0C3
	access_mode	RW
	modes		M_CFG
	field	MANACKCTL	0xC0
	field	MANACKDLY	0x3F
}

/*
 * Data FIFO Data
 * Read/Write byte port into the data FIFO.  The read and write
 * FIFO pointers increment with each read and write respectively
 * to this port.
 */
register DFDAT {
	address			0x0C4
	access_mode	RW
	modes		M_DFF0, M_DFF1
	dont_generate_debug_code
}

/*
 * DSP Channel Select
 */
register DSPSELECT {
	address			0x0C4
	access_mode	RW
	modes		M_CFG
	count		1
	field	AUTOINCEN	0x80
	field	DSPSEL		0x1F
	dont_generate_debug_code
}

const NUMDSPS 0x14

/*
 * Write Bias Control
 */
register WRTBIASCTL {
	address			0x0C5
	access_mode	WO
	modes		M_CFG
	count		3
	field	AUTOXBCDIS	0x80
	field	XMITMANVAL	0x3F
	dont_generate_debug_code
}

/*
 * Currently the WRTBIASCTL is the same as the default.
 */
const WRTBIASCTL_HP_DEFAULT 0x0

/*
 * Receiver Bias Control
 */
register RCVRBIOSCTL {
	address			0x0C6
	access_mode	WO
	modes		M_CFG
	field	AUTORBCDIS	0x80
	field	RCVRMANVAL	0x3F
}

/*
 * Write Bias Calculator
 */
register WRTBIASCALC {
	address			0x0C7
	access_mode	RO
	modes		M_CFG
}

/*
 * Data FIFO Pointers
 * Contains the byte offset from DFWADDR and DWRADDR to the current
 * FIFO write/read locations.
 */
register DFPTRS {
	address			0x0C8
	access_mode	RW
	modes		M_DFF0, M_DFF1
}

/*
 * Receiver Bias Calculator
 */
register RCVRBIASCALC {
	address			0x0C8
	access_mode	RO
	modes		M_CFG
}

/*
 * Data FIFO Backup Read Pointer
 * Contains the data FIFO address to be restored if the last
 * data accessed from the data FIFO was not transferred successfully.
 */
register DFBKPTR {
	address			0x0C9
	access_mode	RW
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * Skew Calculator
 */
register SKEWCALC {
	address			0x0C9
	access_mode	RO
	modes		M_CFG
}

/*
 * Data FIFO Debug Control
 */
register DFDBCTL {
	address				0x0CB
	access_mode	RW
	modes		M_DFF0, M_DFF1
	field	DFF_CIO_WR_RDY		0x20
	field	DFF_CIO_RD_RDY		0x10
	field	DFF_DIR_ERR		0x08
	field	DFF_RAMBIST_FAIL	0x04
	field	DFF_RAMBIST_DONE	0x02
	field	DFF_RAMBIST_EN		0x01
}

/*
 * Data FIFO Space Count
 * Number of FIFO locations that are free.
 */
register DFSCNT {
	address			0x0CC
	access_mode	RO
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * Data FIFO Byte Count
 * Number of filled FIFO locations.
 */
register DFBCNT {
	address			0x0CE
	access_mode	RO
	size		2
	modes		M_DFF0, M_DFF1
}

/*
 * Sequencer Program Overlay Address.
 * Low address must be written prior to high address.
 */
register OVLYADDR {
	address			0x0D4
	modes		M_SCSI
	size		2
	access_mode	RW
}

/*
 * Sequencer Control 0
 * Error detection mode, speed configuration,
 * single step, breakpoints and program load.
 */
register SEQCTL0 {
	address			0x0D6
	access_mode	RW
	count		11
	field	PERRORDIS	0x80
	field	PAUSEDIS	0x40
	field	FAILDIS		0x20
	field	FASTMODE	0x10
	field	BRKADRINTEN	0x08
	field	STEP		0x04
	field	SEQRESET	0x02
	field	LOADRAM		0x01
}

/*
 * Sequencer Control 1
 * Instruction RAM Diagnostics
 */
register SEQCTL1 {
	address			0x0D7
	access_mode RW
	field	OVRLAY_DATA_CHK	0x08
	field	RAMBIST_DONE	0x04
	field	RAMBIST_FAIL	0x02
	field	RAMBIST_EN	0x01
}

/*
 * Sequencer Flags
 * Zero and Carry state of the ALU.
 */
register FLAGS {
	address			0x0D8
	access_mode 	RO
	count		23
	field	ZERO		0x02
	field	CARRY		0x01
	dont_generate_debug_code
}

/*
 * Sequencer Interrupt Control
 */ 
register SEQINTCTL {
	address			0x0D9
	access_mode RW
	field	INTVEC1DSL	0x80
	field	INT1_CONTEXT	0x20
	field	SCS_SEQ_INT1M1	0x10
	field	SCS_SEQ_INT1M0	0x08
	field	INTMASK2	0x04
	field	INTMASK1	0x02
	field	IRET		0x01
}

/*
 * Sequencer RAM Data Port
 * Single byte window into the Sequencer Instruction Ram area starting
 * at the address specified by OVLYADDR.  To write a full instruction word,
 * simply write four bytes in succession.  OVLYADDR will increment after the
 * most significant instrution byte (the byte with the parity bit) is written.
 */
register SEQRAM {
	address			0x0DA
	access_mode 	RW
	count		2
	dont_generate_debug_code
}

/*
 * Sequencer Program Counter
 * Low byte must be written prior to high byte.
 */
register PRGMCNT {
	address			0x0DE
	access_mode	RW
	size		2
	count		5
	dont_generate_debug_code
}

/*
 * Accumulator
 */
register ACCUM {
	address			0x0E0
	access_mode 	RW
	accumulator
	dont_generate_debug_code
}

/*
 * Source Index Register
 * Incrementing index for reads of SINDIR and the destination (low byte only)
 * for any immediate operands passed in jmp, jc, jnc, call instructions.
 * Example:
 *		mvi	0xFF	call some_routine;
 *
 *  Will set SINDEX[0] to 0xFF and call the routine "some_routine.
 */
register SINDEX	{
	address			0x0E2
	access_mode	RW
	size		2
	sindex
	dont_generate_debug_code
}

/*
 * Destination Index Register
 * Incrementing index for writes to DINDIR.  Can be used as a scratch register.
 */
register DINDEX {
	address			0x0E4
	access_mode	RW
	size		2
	dont_generate_debug_code
}

/*
 * Break Address
 * Sequencer instruction breakpoint address address.
 */
register BRKADDR0 {
	address			0x0E6
	access_mode	RW
}

register BRKADDR1 {
	address			0x0E6
	access_mode	RW
	field	BRKDIS		0x80	/* Disable Breakpoint */
}

/*
 * All Ones
 * All reads to this register return the value 0xFF.
 */
register ALLONES {
	address			0x0E8
	access_mode RO
	allones
	dont_generate_debug_code
}

/*
 * All Zeros
 * All reads to this register return the value 0.
 */
register ALLZEROS {
	address			0x0EA
	access_mode RO
	allzeros
	dont_generate_debug_code
}

/*
 * No Destination
 * Writes to this register have no effect.
 */
register NONE {
	address			0x0EA
	access_mode WO
	none
	dont_generate_debug_code
}

/*
 * Source Index Indirect
 * Reading this register is equivalent to reading (register_base + SINDEX) and
 * incrementing SINDEX by 1.
 */
register SINDIR	{
	address			0x0EC
	access_mode RO
	dont_generate_debug_code
}

/*
 * Destination Index Indirect
 * Writing this register is equivalent to writing to (register_base + DINDEX)
 * and incrementing DINDEX by 1.
 */
register DINDIR	 {
	address			0x0ED
	access_mode WO
	dont_generate_debug_code
}

/*
 * Function One
 * 2's complement to bit value conversion.  Write the 2's complement value
 * (0-7 only) to the top nibble and retrieve the bit indexed by that value
 * on the next read of this register. 
 * Example:
 *	Write	0x60
 *	Read	0x40
 */
register FUNCTION1 {
	address			0x0F0
	access_mode RW
}

/*
 * Stack
 * Window into the stack.  Each stack location is 10 bits wide reported
 * low byte followed by high byte.  There are 8 stack locations.
 */
register STACK {
	address			0x0F2
	access_mode RW
	dont_generate_debug_code
}

/*
 * Interrupt Vector 1 Address
 * Interrupt branch address for SCS SEQ_INT1 mode 0 and 1 interrupts.
 */
register INTVEC1_ADDR {
	address			0x0F4
	access_mode	RW
	size		2
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Current Address
 * Address of the SEQRAM instruction currently executing instruction.
 */
register CURADDR {
	address			0x0F4
	access_mode	RW
	size		2
	modes		M_SCSI
	count		2
	dont_generate_debug_code
}

/*
 * Interrupt Vector 2 Address
 * Interrupt branch address for HST_SEQ_INT2 interrupts.
 */
register INTVEC2_ADDR {
	address			0x0F6
	access_mode	RW
	size		2
	modes		M_CFG
	count		1
	dont_generate_debug_code
}

/*
 * Last Address
 * Address of the SEQRAM instruction executed prior to the current instruction.
 */
register LASTADDR {
	address			0x0F6
	access_mode	RW
	size		2
	modes		M_SCSI
}

register AHD_PCI_CONFIG_BASE {
	address			0x100
	access_mode	RW
	size		256
	modes		M_CFG
}

/* ---------------------- Scratch RAM Offsets ------------------------- */
scratch_ram {
	/* Mode Specific */
	address			0x0A0
	size	8
	modes	0, 1, 2, 3
	REG0 {
		size		2
		dont_generate_debug_code
	}
	REG1 {
		size		2
	}
	REG_ISR {
		size		2
		dont_generate_debug_code
	}
	SG_STATE {
		size		1
		field	SEGS_AVAIL	0x01
		field	LOADING_NEEDED	0x02
		field	FETCH_INPROG	0x04
	}
	/*
	 * Track whether the transfer byte count for
	 * the current data phase is odd.
	 */
	DATA_COUNT_ODD {
		size		1
	}
}

scratch_ram {
	/* Mode Specific */
	address			0x0F8
	size	8
	modes	0, 1, 2, 3
	LONGJMP_ADDR {
		size		2
		dont_generate_debug_code
	}
	ACCUM_SAVE {
		size		1
		dont_generate_debug_code
	}
}


scratch_ram {
	address			0x100
	size	128
	modes	0, 1, 2, 3
	/*
	 * Per "other-id" execution queues.  We use an array of
	 * tail pointers into lists of SCBs sorted by "other-id".
	 * The execution head pointer threads the head SCBs for
	 * each list.
	 */
	WAITING_SCB_TAILS {
		size		32
		dont_generate_debug_code
	}
	WAITING_TID_HEAD {
		size		2
		dont_generate_debug_code
	}
	WAITING_TID_TAIL {
		size		2
		dont_generate_debug_code
	}
	/*
	 * SCBID of the next SCB in the new SCB queue.
	 */
	NEXT_QUEUED_SCB_ADDR {
		size		4
		dont_generate_debug_code
	}
	/*
	 * head of list of SCBs that have
	 * completed but have not been
	 * put into the qoutfifo.
	 */
	COMPLETE_SCB_HEAD {
		size		2
		dont_generate_debug_code
	}
	/*
	 * The list of completed SCBs in
	 * the active DMA.
	 */
	COMPLETE_SCB_DMAINPROG_HEAD {
		size		2
		dont_generate_debug_code
	}
	/*
	 * head of list of SCBs that have
	 * completed but need to be uploaded
	 * to the host prior to being completed.
	 */
	COMPLETE_DMA_SCB_HEAD {
		size		2
		dont_generate_debug_code
	}
	/*
	 * tail of list of SCBs that have
	 * completed but need to be uploaded
	 * to the host prior to being completed.
	 */
	COMPLETE_DMA_SCB_TAIL {
		size		2
		dont_generate_debug_code
	}
	/*
	 * head of list of SCBs that have
	 * been uploaded to the host, but cannot
	 * be completed until the QFREEZE is in
	 * full effect (i.e. no selections pending).
	 */
	COMPLETE_ON_QFREEZE_HEAD {
		size		2
		dont_generate_debug_code
	}
	/*
	 * Counting semaphore to prevent new select-outs
	 * The queue is frozen so long as the sequencer
	 * and kernel freeze counts differ.
	 */
	QFREEZE_COUNT {
		size		2
	}
	KERNEL_QFREEZE_COUNT {
		size		2
	}
	/*
	 * Mode to restore on legacy idle loop exit.
	 */
	SAVED_MODE {
		size		1
	}
	/*
	 * Single byte buffer used to designate the type or message
	 * to send to a target.
	 */
	MSG_OUT {
		size		1
		dont_generate_debug_code
	}
	/* Parameters for DMA Logic */
	DMAPARAMS {
		size		1
		count		8
		field	PRELOADEN	0x80
		field	WIDEODD		0x40
		field	SCSIEN		0x20
		field	SDMAEN		0x10
		field	SDMAENACK	0x10
		field	HDMAEN		0x08
		field	HDMAENACK	0x08
		field	DIRECTION	0x04	/* Set indicates PCI->SCSI */
		field	FIFOFLUSH	0x02
		field	FIFORESET	0x01
		dont_generate_debug_code
	}
	SEQ_FLAGS {
		size		1
		field	NOT_IDENTIFIED		0x80
		field	NO_CDB_SENT		0x40
		field	TARGET_CMD_IS_TAGGED	0x40
		field	DPHASE			0x20
		/* Target flags */
		field	TARG_CMD_PENDING	0x10
		field	CMDPHASE_PENDING	0x08
		field	DPHASE_PENDING		0x04
		field	SPHASE_PENDING		0x02
		field	NO_DISCONNECT		0x01
	}
	/*
	 * Temporary storage for the
	 * target/channel/lun of a
	 * reconnecting target
	 */
	SAVED_SCSIID {
		size		1
		dont_generate_debug_code
	}
	SAVED_LUN {
		size		1
		dont_generate_debug_code
	}
	/*
	 * The last bus phase as seen by the sequencer. 
	 */
	LASTPHASE {
		size		1
		field	CDI		0x80
		field	IOI		0x40
		field	MSGI		0x20
		field	P_BUSFREE	0x01
		enum	PHASE_MASK  CDO|IOO|MSGO {
			P_DATAOUT	0x0,
			P_DATAIN	IOO,
			P_DATAOUT_DT	P_DATAOUT|MSGO,
			P_DATAIN_DT	P_DATAIN|MSGO,
			P_COMMAND	CDO,
			P_MESGOUT	CDO|MSGO,
			P_STATUS	CDO|IOO,
			P_MESGIN	CDO|IOO|MSGO
		}
	}
	/*
	 * Value to "or" into the SCBPTR[1] value to
	 * indicate that an entry in the QINFIFO is valid.
	 */
	QOUTFIFO_ENTRY_VALID_TAG {
		size		1
		dont_generate_debug_code
	}
	/*
	 * Kernel and sequencer offsets into the queue of
	 * incoming target mode command descriptors.  The
	 * queue is full when the KERNEL_TQINPOS == TQINPOS.
	 */
	KERNEL_TQINPOS {
		size		1
		count		1
		dont_generate_debug_code
	}
	TQINPOS {
		size		1
		count		8
		dont_generate_debug_code
	}
	/*
	 * Base address of our shared data with the kernel driver in host
	 * memory.  This includes the qoutfifo and target mode
	 * incoming command queue.
	 */
	SHARED_DATA_ADDR {
		size		4
		dont_generate_debug_code
	}
	/*
	 * Pointer to location in host memory for next
	 * position in the qoutfifo.
	 */
	QOUTFIFO_NEXT_ADDR {
		size		4
		dont_generate_debug_code
	}
	ARG_1 {
		size		1
		mask	SEND_MSG		0x80
		mask	SEND_SENSE		0x40
		mask	SEND_REJ		0x20
		mask	MSGOUT_PHASEMIS		0x10
		mask	EXIT_MSG_LOOP		0x08
		mask	CONT_MSG_LOOP_WRITE	0x04
		mask	CONT_MSG_LOOP_READ	0x03
		mask	CONT_MSG_LOOP_TARG	0x02
		alias	RETURN_1
		dont_generate_debug_code
	}
	ARG_2 {
		size		1
		count		1
		alias	RETURN_2
		dont_generate_debug_code
	}

	/*
	 * Snapshot of MSG_OUT taken after each message is sent.
	 */
	LAST_MSG {
		size		1
		dont_generate_debug_code
	}

	/*
	 * Sequences the kernel driver has okayed for us.  This allows
	 * the driver to do things like prevent initiator or target
	 * operations.
	 */
	SCSISEQ_TEMPLATE {
		size		1
		count		7
		field	MANUALCTL	0x40
		field	ENSELI		0x20
		field	ENRSELI		0x10
		field	MANUALP		0x0C
		field	ENAUTOATNP	0x02
		field	ALTSTIM		0x01
		dont_generate_debug_code
	}

	/*
	 * The initiator specified tag for this target mode transaction.
	 */
	INITIATOR_TAG {
		size		1
		count		1
		dont_generate_debug_code
	}

	SEQ_FLAGS2 {
		size		1
		field	PENDING_MK_MESSAGE	0x01
		field	TARGET_MSG_PENDING	0x02
		field	SELECTOUT_QFROZEN	0x04
	}

	ALLOCFIFO_SCBPTR {
		size		2
		dont_generate_debug_code
	}

	/*
	 * The maximum amount of time to wait, when interrupt coalescing
	 * is enabled, before issuing a CMDCMPLT interrupt for a completed
	 * command.
	 */
	INT_COALESCING_TIMER {
		size		2
		dont_generate_debug_code
	}

	/*
	 * The maximum number of commands to coalesce into a single interrupt.
	 * Actually the 2's complement of that value to simplify sequencer
	 * code.
	 */
	INT_COALESCING_MAXCMDS {
		size		1
		dont_generate_debug_code
	}

	/*
	 * The minimum number of commands still outstanding required
	 * to continue coalescing (2's complement of value).
	 */
	INT_COALESCING_MINCMDS {
		size		1
		dont_generate_debug_code
	}

	/*
	 * Number of commands "in-flight".
	 */
	CMDS_PENDING {
		size		2
		dont_generate_debug_code
	}

	/*
	 * The count of commands that have been coalesced.
	 */
	INT_COALESCING_CMDCOUNT {
		size		1
		dont_generate_debug_code
	}

	/*
	 * Since the HS_MAIBOX is self clearing, copy its contents to
	 * this position in scratch ram every time it changes.
	 */
	LOCAL_HS_MAILBOX {
		size		1
		dont_generate_debug_code
	}
	/*
	 * Target-mode CDB type to CDB length table used
	 * in non-packetized operation.
	 */
	CMDSIZE_TABLE {
		size		8
		count		8
		dont_generate_debug_code
	}
	/*
	 * When an SCB with the MK_MESSAGE flag is
	 * queued to the controller, it cannot enter
	 * the waiting for selection list until the
	 * selections for any previously queued
	 * commands to that target complete.  During
	 * the wait, the MK_MESSAGE SCB is queued
	 * here.
	 */
	MK_MESSAGE_SCB {
		size		2
	}
	/*
	 * Saved SCSIID of MK_MESSAGE_SCB to avoid
	 * an extra SCBPTR operation when deciding
	 * if the MK_MESSAGE_SCB can be run.
	 */
	MK_MESSAGE_SCSIID {
		size		1
	}
}

/************************* Hardware SCB Definition ****************************/
scb {
	address			0x180
	size		64
	modes		0, 1, 2, 3
	SCB_RESIDUAL_DATACNT {
		size	4
		alias	SCB_CDB_STORE
		alias	SCB_HOST_CDB_PTR
		dont_generate_debug_code
	}
	SCB_RESIDUAL_SGPTR {
		size	4
		field	SG_ADDR_MASK		0xf8	/* In the last byte */
		field	SG_OVERRUN_RESID	0x02	/* In the first byte */
		field	SG_LIST_NULL		0x01	/* In the first byte */
		dont_generate_debug_code
	}
	SCB_SCSI_STATUS {
		size	1
		alias	SCB_HOST_CDB_LEN
		dont_generate_debug_code
	}
	SCB_TARGET_PHASES {
		size	1
		dont_generate_debug_code
	}
	SCB_TARGET_DATA_DIR {
		size	1
		dont_generate_debug_code
	}
	SCB_TARGET_ITAG {
		size	1
		dont_generate_debug_code
	}
	SCB_SENSE_BUSADDR {
		/*
		 * Only valid if CDB length is less than 13 bytes or
		 * we are using a CDB pointer.  Otherwise contains
		 * the last 4 bytes of embedded cdb information.
		 */
		size	4
		alias	SCB_NEXT_COMPLETE
		dont_generate_debug_code
	}
	SCB_TAG {
		alias	SCB_FIFO_USE_COUNT
		size	2
		dont_generate_debug_code
	}
	SCB_CONTROL {
		size	1
		field	TARGET_SCB	0x80
		field	DISCENB		0x40
		field	TAG_ENB		0x20
		field	MK_MESSAGE	0x10
		field	STATUS_RCVD	0x08
		field	DISCONNECTED	0x04
		field	SCB_TAG_TYPE	0x03
	}
	SCB_SCSIID {
		size	1
		field	TID	0xF0
		field	OID	0x0F
	}
	SCB_LUN {
		size	1
		field	LID	0xff
		dont_generate_debug_code
	}
	SCB_TASK_ATTRIBUTE {
		size	1
		/*
		 * Overloaded field for non-packetized 
		 * ignore wide residue message handling.
		 */
		field	SCB_XFERLEN_ODD	0x01
		dont_generate_debug_code
	}
	SCB_CDB_LEN {
		size	1
		field	SCB_CDB_LEN_PTR	0x80	/* CDB in host memory */
		dont_generate_debug_code
	}
	SCB_TASK_MANAGEMENT {
		size	1
		dont_generate_debug_code
	}
	SCB_DATAPTR {
		size	8
		dont_generate_debug_code
	}
	SCB_DATACNT {
		/*
		 * The last byte is really the high address bits for
		 * the data address.
		 */
		size	4
		field	SG_LAST_SEG		0x80	/* In the fourth byte */
		field	SG_HIGH_ADDR_BITS	0x7F	/* In the fourth byte */
		dont_generate_debug_code
	}
	SCB_SGPTR {
		size	4
		field	SG_STATUS_VALID	0x04	/* In the first byte */
		field	SG_FULL_RESID	0x02	/* In the first byte */
		field	SG_LIST_NULL	0x01	/* In the first byte */
		dont_generate_debug_code
	}
	SCB_BUSADDR {
		size	4
		dont_generate_debug_code
	}
	SCB_NEXT {
		alias	SCB_NEXT_SCB_BUSADDR
		size	2
		dont_generate_debug_code
	}
	SCB_NEXT2 {
		size	2
		dont_generate_debug_code
	}
	SCB_SPARE {
		size	8
		alias	SCB_PKT_LUN
	}
	SCB_DISCONNECTED_LISTS {
		size	8
		dont_generate_debug_code
	}
}

/*********************************** Constants ********************************/
const MK_MESSAGE_BIT_OFFSET	4
const TID_SHIFT		4
const TARGET_CMD_CMPLT	0xfe
const INVALID_ADDR	0x80
#define SCB_LIST_NULL	0xff
#define QOUTFIFO_ENTRY_VALID_TOGGLE	0x80

const CCSGADDR_MAX	0x80
const CCSCBADDR_MAX	0x80
const CCSGRAM_MAXSEGS	16

/* Selection Timeout Timer Constants */
const STIMESEL_SHIFT	3
const STIMESEL_MIN	0x18
const STIMESEL_BUG_ADJ	0x8

/* WDTR Message values */
const BUS_8_BIT			0x00
const BUS_16_BIT		0x01
const BUS_32_BIT		0x02

/* Offset maximums */
const MAX_OFFSET		0xfe
const MAX_OFFSET_PACED		0xfe
const MAX_OFFSET_PACED_BUG	0x7f
/*
 * Some 160 devices incorrectly accept 0xfe as a
 * sync offset, but will overrun this value.  Limit
 * to 0x7f for speed lower than U320 which will
 * avoid the persistent sync offset overruns.
 */
const MAX_OFFSET_NON_PACED	0x7f
const HOST_MSG			0xff

/*
 * The size of our sense buffers.
 * Sense buffer mapping can be handled in either of two ways.
 * The first is to allocate a dmamap for each transaction.
 * Depending on the architecture, dmamaps can be costly. The
 * alternative is to statically map the buffers in much the same
 * way we handle our scatter gather lists.  The driver implements
 * the later.
 */
const AHD_SENSE_BUFSIZE		256

/* Target mode command processing constants */
const CMD_GROUP_CODE_SHIFT	0x05

const STATUS_BUSY		0x08
const STATUS_QUEUE_FULL		0x28
const STATUS_PKT_SENSE		0xFF
const TARGET_DATA_IN		1

const SCB_TRANSFER_SIZE_FULL_LUN	56
const SCB_TRANSFER_SIZE_1BYTE_LUN	48
/* PKT_OVERRUN_BUFSIZE must be a multiple of 256 less than 64K */
const PKT_OVERRUN_BUFSIZE	512

/*
 * Timer parameters.
 */
const AHD_TIMER_US_PER_TICK	25
const AHD_TIMER_MAX_TICKS	0xFFFF
const AHD_TIMER_MAX_US		(AHD_TIMER_MAX_TICKS * AHD_TIMER_US_PER_TICK)

/*
 * Downloaded (kernel inserted) constants
 */
const SG_PREFETCH_CNT download
const SG_PREFETCH_CNT_LIMIT download
const SG_PREFETCH_ALIGN_MASK download
const SG_PREFETCH_ADDR_MASK download
const SG_SIZEOF download
const PKT_OVERRUN_BUFOFFSET download
const SCB_TRANSFER_SIZE	download
const CACHELINE_MASK download

/*
 * BIOS SCB offsets
 */
const NVRAM_SCB_OFFSET	0x2C