Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 1761 insertions, 0 deletions

diff --git a/drivers/scsi/aic7xxx/aic7xxx.reg b/drivers/scsi/aic7xxx/aic7xxx.reg
new file mode 100644
index 0000000..9a96e55
--- /dev/null
+++ b/drivers/scsi/aic7xxx/aic7xxx.reg
@@ -0,0 +1,1761 @@
+/*
+ * Aic7xxx register and scratch ram definitions.
+ *
+ * Copyright (c) 1994-2001 Justin T. Gibbs.
+ * Copyright (c) 2000-2001 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/aic7xxx.reg#40 $"
+
+/*
+ * This file is processed by the aic7xxx_asm utility for use in assembling
+ * firmware for the aic7xxx family of SCSI host adapters as well as to generate
+ * a C header file for use in the kernel portion of the Aic7xxx driver.
+ *
+ * All page numbers refer to the Adaptec AIC-7770 Data Book available from
+ * Adaptec's Technical Documents Department 1-800-934-2766
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * SCSI Sequence Control (p. 3-11).
+ * Each bit, when set starts a specific SCSI sequence on the bus
+ */
+register SCSISEQ {
+	address			0x000
+	access_mode RW
+	field	TEMODE		0x80
+	field	ENSELO		0x40
+	field	ENSELI		0x20
+	field	ENRSELI		0x10
+	field	ENAUTOATNO	0x08
+	field	ENAUTOATNI	0x04
+	field	ENAUTOATNP	0x02
+	field	SCSIRSTO	0x01
+}
+
+/*
+ * SCSI Transfer Control 0 Register (pp. 3-13).
+ * Controls the SCSI module data path.
+ */
+register SXFRCTL0 {
+	address			0x001
+	access_mode RW
+	field	DFON		0x80
+	field	DFPEXP		0x40
+	field	FAST20		0x20
+	field	CLRSTCNT	0x10
+	field	SPIOEN		0x08
+	field	SCAMEN		0x04
+	field	CLRCHN		0x02
+}
+
+/*
+ * SCSI Transfer Control 1 Register (pp. 3-14,15).
+ * Controls the SCSI module data path.
+ */
+register SXFRCTL1 {
+	address			0x002
+	access_mode RW
+	field	BITBUCKET	0x80
+	field	SWRAPEN		0x40
+	field	ENSPCHK		0x20
+	mask	STIMESEL	0x18
+	field	ENSTIMER	0x04
+	field	ACTNEGEN	0x02
+	field	STPWEN		0x01	/* Powered Termination */
+	dont_generate_debug_code
+}
+
+/*
+ * SCSI Control Signal Read Register (p. 3-15).
+ * Reads the actual state of the SCSI bus pins
+ */
+register SCSISIGI {
+	address			0x003
+	access_mode RO
+	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
+ */
+	mask	PHASE_MASK	CDI|IOI|MSGI
+	mask	P_DATAOUT	0x00
+	mask	P_DATAIN	IOI
+	mask	P_DATAOUT_DT	P_DATAOUT|MSGI
+	mask	P_DATAIN_DT	P_DATAIN|MSGI
+	mask	P_COMMAND	CDI
+	mask	P_MESGOUT	CDI|MSGI
+	mask	P_STATUS	CDI|IOI
+	mask	P_MESGIN	CDI|IOI|MSGI
+}
+
+/*
+ * SCSI Control Signal Write Register (p. 3-16).
+ * Writing to this register modifies the control signals on the bus.  Only
+ * those signals that are allowed in the current mode (Initiator/Target) are
+ * asserted.
+ */
+register SCSISIGO {
+	address			0x003
+	access_mode WO
+	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
+ */
+	mask	PHASE_MASK	CDI|IOI|MSGI
+	mask	P_DATAOUT	0x00
+	mask	P_DATAIN	IOI
+	mask	P_COMMAND	CDI
+	mask	P_MESGOUT	CDI|MSGI
+	mask	P_STATUS	CDI|IOI
+	mask	P_MESGIN	CDI|IOI|MSGI
+	dont_generate_debug_code
+}
+
+/* 
+ * SCSI Rate Control (p. 3-17).
+ * Contents of this register determine the Synchronous SCSI data transfer
+ * rate and the maximum synchronous Req/Ack offset.  An offset of 0 in the
+ * SOFS (3:0) bits disables synchronous data transfers.  Any offset value
+ * greater than 0 enables synchronous transfers.
+ */
+register SCSIRATE {
+	address			0x004
+	access_mode RW
+	field	WIDEXFER	0x80		/* Wide transfer control */
+	field	ENABLE_CRC	0x40		/* CRC for D-Phases */
+	field	SINGLE_EDGE	0x10		/* Disable DT Transfers */
+	mask	SXFR		0x70		/* Sync transfer rate */
+	mask	SXFR_ULTRA2	0x0f		/* Sync transfer rate */
+	mask	SOFS		0x0f		/* Sync offset */
+}
+
+/*
+ * SCSI ID (p. 3-18).
+ * Contains the ID of the board and the current target on the
+ * selected channel.
+ */
+register SCSIID	{
+	address			0x005
+	access_mode RW
+	mask	TID		0xf0		/* Target ID mask */
+	mask	TWIN_TID	0x70
+	field	TWIN_CHNLB	0x80
+	mask	OID		0x0f		/* Our ID mask */
+	/*
+	 * SCSI Maximum Offset (p. 4-61 aic7890/91 Data Book)
+	 * The aic7890/91 allow an offset of up to 127 transfers in both wide
+	 * and narrow mode.
+	 */
+	alias	SCSIOFFSET
+	mask	SOFS_ULTRA2	0x7f		/* Sync offset U2 chips */
+	dont_generate_debug_code
+}
+
+/*
+ * SCSI Latched Data (p. 3-19).
+ * Read/Write latches used to transfer data on the SCSI bus during
+ * Automatic or Manual PIO mode.  SCSIDATH can be used for the
+ * upper byte of a 16bit wide asynchronouse data phase transfer.
+ */
+register SCSIDATL {
+	address			0x006
+	access_mode RW
+	dont_generate_debug_code
+}
+
+register SCSIDATH {
+	address			0x007
+	access_mode RW
+}
+
+/*
+ * SCSI Transfer Count (pp. 3-19,20)
+ * These registers count down the number of bytes transferred
+ * across the SCSI bus.  The counter is decremented only once
+ * the data has been safely transferred.  SDONE in SSTAT0 is
+ * set when STCNT goes to 0
+ */ 
+register STCNT {
+	address			0x008
+	size	3
+	access_mode RW
+	dont_generate_debug_code
+}
+
+/* ALT_MODE registers (Ultra2 and Ultra160 chips) */
+register SXFRCTL2 {
+	address			0x013
+	access_mode RW
+	field	AUTORSTDIS	0x10
+	field	CMDDMAEN	0x08
+	mask	ASYNC_SETUP	0x07
+}
+
+/* ALT_MODE register on Ultra160 chips */
+register OPTIONMODE {
+	address			0x008
+	access_mode RW
+	count		2
+	field	AUTORATEEN		0x80
+	field	AUTOACKEN		0x40
+	field	ATNMGMNTEN		0x20
+	field	BUSFREEREV		0x10
+	field	EXPPHASEDIS		0x08
+	field	SCSIDATL_IMGEN		0x04
+	field	AUTO_MSGOUT_DE		0x02
+	field	DIS_MSGIN_DUALEDGE	0x01
+	mask	OPTIONMODE_DEFAULTS	AUTO_MSGOUT_DE|DIS_MSGIN_DUALEDGE
+	dont_generate_debug_code
+}
+
+/* ALT_MODE register on Ultra160 chips */
+register TARGCRCCNT {
+	address			0x00a
+	size	2
+	access_mode RW
+	count		2
+	dont_generate_debug_code
+}
+
+/*
+ * Clear SCSI Interrupt 0 (p. 3-20)
+ * Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT0.
+ */
+register CLRSINT0 {
+	address			0x00b
+	access_mode WO
+	field	CLRSELDO	0x40
+	field	CLRSELDI	0x20
+	field	CLRSELINGO	0x10
+	field	CLRSWRAP	0x08
+	field	CLRIOERR	0x08	/* Ultra2 Only */
+	field	CLRSPIORDY	0x02
+	dont_generate_debug_code
+}
+
+/*
+ * SCSI Status 0 (p. 3-21)
+ * Contains one set of SCSI Interrupt codes
+ * These are most likely of interest to the sequencer
+ */
+register SSTAT0	{
+	address			0x00b
+	access_mode RO
+	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	SWRAP		0x08	/* 24bit counter wrap */
+	field	IOERR		0x08	/* LVD Tranceiver mode changed */
+	field	SDONE		0x04	/* STCNT = 0x000000 */
+	field	SPIORDY		0x02	/* SCSI PIO Ready */
+	field	DMADONE		0x01	/* DMA transfer completed */
+}
+
+/*
+ * Clear SCSI Interrupt 1 (p. 3-23)
+ * Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT1.
+ */
+register CLRSINT1 {
+	address			0x00c
+	access_mode WO
+	field	CLRSELTIMEO	0x80
+	field	CLRATNO		0x40
+	field	CLRSCSIRSTI	0x20
+	field	CLRBUSFREE	0x08
+	field	CLRSCSIPERR	0x04
+	field	CLRPHASECHG	0x02
+	field	CLRREQINIT	0x01
+	dont_generate_debug_code
+}
+
+/*
+ * SCSI Status 1 (p. 3-24)
+ */
+register SSTAT1	{
+	address			0x00c
+	access_mode RO
+	field	SELTO		0x80
+	field	ATNTARG 	0x40
+	field	SCSIRSTI	0x20
+	field	PHASEMIS	0x10
+	field	BUSFREE		0x08
+	field	SCSIPERR	0x04
+	field	PHASECHG	0x02
+	field	REQINIT		0x01
+}
+
+/*
+ * SCSI Status 2 (pp. 3-25,26)
+ */
+register SSTAT2 {
+	address			0x00d
+	access_mode RO
+	field	OVERRUN		0x80
+	field	SHVALID		0x40	/* Shaddow Layer non-zero */
+	field	EXP_ACTIVE	0x10	/* SCSI Expander Active */
+	field	CRCVALERR	0x08	/* CRC doesn't match (U3 only) */
+	field	CRCENDERR	0x04	/* No terminal CRC packet (U3 only) */
+	field	CRCREQERR	0x02	/* Illegal CRC packet req (U3 only) */
+	field	DUAL_EDGE_ERR	0x01	/* Incorrect data phase (U3 only) */
+	mask	SFCNT		0x1f
+}
+
+/*
+ * SCSI Status 3 (p. 3-26)
+ */
+register SSTAT3 {
+	address			0x00e
+	access_mode RO
+	count		2
+	mask	SCSICNT		0xf0
+	mask	OFFCNT		0x0f
+	mask	U2OFFCNT	0x7f
+}
+
+/*
+ * SCSI ID for the aic7890/91 chips
+ */
+register SCSIID_ULTRA2 {
+	address			0x00f
+	access_mode RW
+	mask	TID		0xf0		/* Target ID mask */
+	mask	OID		0x0f		/* Our ID mask */
+	dont_generate_debug_code
+}
+
+/*
+ * SCSI Interrupt Mode 1 (p. 3-28)
+ * Setting any bit will enable the corresponding function
+ * in SIMODE0 to interrupt via the IRQ pin.
+ */
+register SIMODE0 {
+	address			0x010
+	access_mode RW
+	count		2
+	field	ENSELDO		0x40
+	field	ENSELDI		0x20
+	field	ENSELINGO	0x10
+	field	ENSWRAP		0x08
+	field	ENIOERR		0x08	/* LVD Tranceiver mode changes */
+	field	ENSDONE		0x04
+	field	ENSPIORDY	0x02
+	field	ENDMADONE	0x01
+}
+
+/*
+ * SCSI Interrupt Mode 1 (pp. 3-28,29)
+ * Setting any bit will enable the corresponding function
+ * in SIMODE1 to interrupt via the IRQ pin.
+ */
+register SIMODE1 {
+	address			0x011
+	access_mode RW
+	field	ENSELTIMO	0x80
+	field	ENATNTARG	0x40
+	field	ENSCSIRST	0x20
+	field	ENPHASEMIS	0x10
+	field	ENBUSFREE	0x08
+	field	ENSCSIPERR	0x04
+	field	ENPHASECHG	0x02
+	field	ENREQINIT	0x01
+}
+
+/*
+ * SCSI Data Bus (High) (p. 3-29)
+ * This register reads data on the SCSI Data bus directly.
+ */
+register SCSIBUSL {
+	address			0x012
+	access_mode RW
+}
+
+register SCSIBUSH {
+	address			0x013
+	access_mode RW
+}
+
+/*
+ * SCSI/Host Address (p. 3-30)
+ * These registers hold the host address for the byte about to be
+ * transferred on the SCSI bus.  They are counted up in the same
+ * manner as STCNT is counted down.  SHADDR should always be used
+ * to determine the address of the last byte transferred since HADDR
+ * can be skewed by write ahead.
+ */
+register SHADDR {
+	address			0x014
+	size	4
+	access_mode RO
+	dont_generate_debug_code
+}
+
+/*
+ * Selection Timeout Timer (p. 3-30)
+ */
+register SELTIMER {
+	address			0x018
+	access_mode RW
+	count		1
+	field	STAGE6		0x20
+	field	STAGE5		0x10
+	field	STAGE4		0x08
+	field	STAGE3		0x04
+	field	STAGE2		0x02
+	field	STAGE1		0x01
+	alias	TARGIDIN
+	dont_generate_debug_code
+}
+
+/*
+ * Selection/Reselection ID (p. 3-31)
+ * 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			0x019
+	access_mode RW
+	mask	SELID_MASK	0xf0
+	field	ONEBIT		0x08
+	dont_generate_debug_code
+}
+
+register SCAMCTL {
+	address			0x01a
+	access_mode RW
+	field	ENSCAMSELO	0x80
+	field	CLRSCAMSELID	0x40
+	field	ALTSTIM		0x20
+	field	DFLTTID		0x10
+	mask	SCAMLVL		0x03
+}
+
+/*
+ * Target Mode Selecting in ID bitmask (aic7890/91/96/97)
+ */
+register TARGID {
+	address			0x01b
+	size			2
+	access_mode RW
+	count		14
+	dont_generate_debug_code
+}
+
+/*
+ * Serial Port I/O Cabability register (p. 4-95 aic7860 Data Book)
+ * Indicates if external logic has been attached to the chip to
+ * perform the tasks of accessing a serial eeprom, testing termination
+ * strength, and performing cable detection.  On the aic7860, most of
+ * these features are handled on chip, but on the aic7855 an attached
+ * aic3800 does the grunt work.
+ */
+register SPIOCAP {
+	address			0x01b
+	access_mode RW
+	count		10
+	field	SOFT1		0x80
+	field	SOFT0		0x40
+	field	SOFTCMDEN	0x20	
+	field	EXT_BRDCTL	0x10	/* External Board control */
+	field	SEEPROM		0x08	/* External serial eeprom logic */
+	field	EEPROM		0x04	/* Writable external BIOS ROM */
+	field	ROM		0x02	/* Logic for accessing external ROM */
+	field	SSPIOCPS	0x01	/* Termination and cable detection */
+	dont_generate_debug_code
+}
+
+register BRDCTL	{
+	address			0x01d
+	count		11
+	field	BRDDAT7		0x80
+	field	BRDDAT6		0x40
+	field	BRDDAT5		0x20
+	field	BRDSTB		0x10
+	field	BRDCS		0x08
+	field	BRDRW		0x04
+	field	BRDCTL1		0x02
+	field	BRDCTL0		0x01
+	/* 7890 Definitions */
+	field	BRDDAT4		0x10
+	field	BRDDAT3		0x08
+	field	BRDDAT2		0x04
+	field	BRDRW_ULTRA2	0x02
+	field	BRDSTB_ULTRA2	0x01
+	dont_generate_debug_code
+}
+
+/*
+ * Serial EEPROM Control (p. 4-92 in 7870 Databook)
+ * Controls the reading and writing of an external serial 1-bit
+ * EEPROM Device.  In order to access the serial EEPROM, you must
+ * first set the SEEMS bit that generates a request to the memory
+ * port for access to the serial EEPROM device.  When the memory
+ * port is not busy servicing another request, it reconfigures
+ * to allow access to the serial EEPROM.  When this happens, SEERDY
+ * gets set high to verify that the memory port access has been
+ * granted.  
+ *
+ * After successful arbitration for the memory port, the SEECS bit of 
+ * the SEECTL register is connected to the chip select.  The SEECK, 
+ * SEEDO, and SEEDI are connected to the clock, data out, and data in 
+ * lines respectively.  The SEERDY bit of SEECTL is useful in that it 
+ * gives us an 800 nsec timer.  After a write to the SEECTL register, 
+ * the SEERDY goes high 800 nsec later.  The one exception to this is 
+ * when we first request access to the memory port.  The SEERDY goes 
+ * high to signify that access has been granted and, for this case, has 
+ * no implied timing.
+ *
+ * See 93cx6.c for detailed information on the protocol necessary to 
+ * read the serial EEPROM.
+ */
+register SEECTL {
+	address			0x01e
+	count		11
+	field	EXTARBACK	0x80
+	field	EXTARBREQ	0x40
+	field	SEEMS		0x20
+	field	SEERDY		0x10
+	field	SEECS		0x08
+	field	SEECK		0x04
+	field	SEEDO		0x02
+	field	SEEDI		0x01
+	dont_generate_debug_code
+}
+/*
+ * SCSI Block Control (p. 3-32)
+ * Controls Bus type and channel selection.  In a twin channel configuration
+ * addresses 0x00-0x1e are gated to the appropriate channel based on this
+ * register.  SELWIDE allows for the coexistence of 8bit and 16bit devices
+ * on a wide bus.
+ */
+register SBLKCTL {
+	address			0x01f
+	access_mode RW
+	field	DIAGLEDEN	0x80	/* Aic78X0 only */
+	field	DIAGLEDON	0x40	/* Aic78X0 only */
+	field	AUTOFLUSHDIS	0x20
+	field	SELBUSB		0x08
+	field	ENAB40		0x08	/* LVD transceiver active */
+	field	ENAB20		0x04	/* SE/HVD transceiver active */
+	field	SELWIDE		0x02
+	field	XCVR		0x01	/* External transceiver active */
+}
+
+/*
+ * Sequencer Control (p. 3-33)
+ * Error detection mode and speed configuration
+ */
+register SEQCTL {
+	address			0x060
+	access_mode RW
+	count		15
+	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 RAM Data (p. 3-34)
+ * Single byte window into the Scratch Ram area starting at the address
+ * specified by SEQADDR0 and SEQADDR1.  To write a full word, simply write
+ * four bytes in succession.  The SEQADDRs will increment after the most
+ * significant byte is written
+ */
+register SEQRAM {
+	address			0x061
+	access_mode RW
+	count		2
+	dont_generate_debug_code
+}
+
+/*
+ * Sequencer Address Registers (p. 3-35)
+ * Only the first bit of SEQADDR1 holds addressing information
+ */
+register SEQADDR0 {
+	address			0x062
+	access_mode RW
+	dont_generate_debug_code
+}
+
+register SEQADDR1 {
+	address			0x063
+	access_mode RW
+	count		8
+	mask	SEQADDR1_MASK	0x01
+	dont_generate_debug_code
+}
+
+/*
+ * Accumulator
+ * We cheat by passing arguments in the Accumulator up to the kernel driver
+ */
+register ACCUM {
+	address			0x064
+	access_mode RW
+	accumulator
+	dont_generate_debug_code
+}
+
+register SINDEX	{
+	address			0x065
+	access_mode RW
+	sindex
+	dont_generate_debug_code
+}
+
+register DINDEX {
+	address			0x066
+	access_mode RW
+	dont_generate_debug_code
+}
+
+register ALLONES {
+	address			0x069
+	access_mode RO
+	allones
+	dont_generate_debug_code
+}
+
+register ALLZEROS {
+	address			0x06a
+	access_mode RO
+	allzeros
+	dont_generate_debug_code
+}
+
+register NONE {
+	address			0x06a
+	access_mode WO
+	none
+	dont_generate_debug_code
+}
+
+register FLAGS {
+	address			0x06b
+	access_mode RO
+	count		18
+	field	ZERO		0x02
+	field	CARRY		0x01
+	dont_generate_debug_code
+}
+
+register SINDIR	{
+	address			0x06c
+	access_mode RO
+	dont_generate_debug_code
+}
+
+register DINDIR	 {
+	address			0x06d
+	access_mode WO
+	dont_generate_debug_code
+}
+
+register FUNCTION1 {
+	address			0x06e
+	access_mode RW
+}
+
+register STACK {
+	address			0x06f
+	access_mode RO
+	count		5
+	dont_generate_debug_code
+}
+
+const	STACK_SIZE	4
+
+/*
+ * Board Control (p. 3-43)
+ */
+register BCTL {
+	address			0x084
+	access_mode RW
+	field	ACE		0x08
+	field	ENABLE		0x01
+}
+
+/*
+ * On the aic78X0 chips, Board Control is replaced by the DSCommand
+ * register (p. 4-64)
+ */
+register DSCOMMAND0 {
+	address			0x084
+	access_mode RW
+	count		7
+	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 */
+	/* aic7890/91/96/97 only */
+	field	INTSCBRAMSEL	0x08	/* Internal SCB RAM Select */
+	field	RAMPS		0x04	/* External SCB RAM Present */
+	field	USCBSIZE32	0x02	/* Use 32byte SCB Page Size */
+	field	CIOPARCKEN	0x01	/* Internal bus parity error enable */
+	dont_generate_debug_code
+}
+
+register DSCOMMAND1 {
+	address			0x085
+	access_mode RW
+	mask	DSLATT		0xfc	/* PCI latency timer (non-ultra2) */
+	field	HADDLDSEL1	0x02	/* Host Address Load Select Bits */
+	field	HADDLDSEL0	0x01
+	dont_generate_debug_code
+}
+
+/*
+ * Bus On/Off Time (p. 3-44) aic7770 only
+ */
+register BUSTIME {
+	address			0x085
+	access_mode RW
+	count		2
+	mask	BOFF		0xf0
+	mask	BON		0x0f
+	dont_generate_debug_code
+}
+
+/*
+ * Bus Speed (p. 3-45) aic7770 only
+ */
+register BUSSPD {
+	address			0x086
+	access_mode RW
+	count		2
+	mask	DFTHRSH		0xc0
+	mask	STBOFF		0x38
+	mask	STBON		0x07
+	mask	DFTHRSH_100	0xc0
+	mask	DFTHRSH_75	0x80
+	dont_generate_debug_code
+}
+
+/* aic7850/55/60/70/80/95 only */
+register DSPCISTATUS {
+	address			0x086
+	count		4
+	mask	DFTHRSH_100	0xc0
+	dont_generate_debug_code
+}
+
+/* aic7890/91/96/97 only */
+register HS_MAILBOX {
+	address			0x086
+	mask	HOST_MAILBOX	0xF0
+	mask	SEQ_MAILBOX	0x0F
+	mask	HOST_TQINPOS	0x80	/* Boundary at either 0 or 128 */
+	dont_generate_debug_code
+}
+
+const	HOST_MAILBOX_SHIFT	4
+const	SEQ_MAILBOX_SHIFT	0
+
+/*
+ * Host Control (p. 3-47) R/W
+ * Overall host control of the device.
+ */
+register HCNTRL {
+	address			0x087
+	access_mode RW
+	count		14
+	field	POWRDN		0x40
+	field	SWINT		0x10
+	field	IRQMS		0x08
+	field	PAUSE		0x04
+	field	INTEN		0x02
+	field	CHIPRST		0x01
+	field	CHIPRSTACK	0x01
+	dont_generate_debug_code
+}
+
+/*
+ * Host Address (p. 3-48)
+ * This register contains the address of the byte about
+ * to be transferred across the host bus.
+ */
+register HADDR {
+	address			0x088
+	size	4
+	access_mode RW
+	dont_generate_debug_code
+}
+
+register HCNT {
+	address			0x08c
+	size	3
+	access_mode RW
+	dont_generate_debug_code
+}
+
+/*
+ * SCB Pointer (p. 3-49)
+ * Gate one of the SCBs into the SCBARRAY window.
+ */
+register SCBPTR {
+	address			0x090
+	access_mode RW
+	dont_generate_debug_code
+}
+
+/*
+ * Interrupt Status (p. 3-50)
+ * Status for system interrupts
+ */
+register INTSTAT {
+	address			0x091
+	access_mode RW
+	field	BRKADRINT 0x08
+	field	SCSIINT	  0x04
+	field	CMDCMPLT  0x02
+	field	SEQINT    0x01
+	mask	BAD_PHASE	SEQINT		/* unknown scsi bus phase */
+	mask	SEND_REJECT	0x10|SEQINT	/* sending a message reject */
+	mask	PROTO_VIOLATION	0x20|SEQINT	/* SCSI protocol violation */ 
+	mask	NO_MATCH	0x30|SEQINT	/* no cmd match for reconnect */
+	mask	IGN_WIDE_RES	0x40|SEQINT	/* Complex IGN Wide Res Msg */
+	mask	PDATA_REINIT	0x50|SEQINT	/*
+						 * Returned to data phase
+						 * that requires data
+						 * transfer pointers to be
+						 * recalculated from the
+						 * transfer residual.
+						 */
+	mask	HOST_MSG_LOOP	0x60|SEQINT	/*
+						 * 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.
+						 */
+	mask	BAD_STATUS	0x70|SEQINT	/* Bad status from target */
+	mask	PERR_DETECTED	0x80|SEQINT	/*
+						 * Either the phase_lock
+						 * or inb_next routine has
+						 * noticed a parity error.
+						 */
+	mask	DATA_OVERRUN	0x90|SEQINT	/*
+						 * Target attempted to write
+						 * beyond the bounds of its
+						 * command.
+						 */
+	mask	MKMSG_FAILED	0xa0|SEQINT	/*
+						 * Target completed command
+						 * without honoring our ATN
+						 * request to issue a message. 
+						 */
+	mask	MISSED_BUSFREE	0xb0|SEQINT	/*
+						 * The sequencer never saw
+						 * the bus go free after
+						 * either a command complete
+						 * or disconnect message.
+						 */
+	mask	SCB_MISMATCH	0xc0|SEQINT	/*
+						 * Downloaded SCB's tag does
+						 * not match the entry we
+						 * intended to download.
+						 */
+	mask	NO_FREE_SCB	0xd0|SEQINT	/*
+						 * get_free_or_disc_scb failed.
+						 */
+	mask	OUT_OF_RANGE	0xe0|SEQINT
+
+	mask	SEQINT_MASK	0xf0|SEQINT	/* SEQINT Status Codes */
+	mask	INT_PEND  (BRKADRINT|SEQINT|SCSIINT|CMDCMPLT)
+	dont_generate_debug_code
+}
+
+/*
+ * Hard Error (p. 3-53)
+ * Reporting of catastrophic errors.  You usually cannot recover from
+ * these without a full board reset.
+ */
+register ERROR {
+	address			0x092
+	access_mode RO
+	count		26
+	field	CIOPARERR	0x80	/* Ultra2 only */
+	field	PCIERRSTAT	0x40	/* PCI only */
+	field	MPARERR		0x20	/* PCI only */
+	field	DPARERR		0x10	/* PCI only */
+	field	SQPARERR	0x08
+	field	ILLOPCODE	0x04
+	field	ILLSADDR	0x02
+	field	ILLHADDR	0x01
+}
+
+/*
+ * Clear Interrupt Status (p. 3-52)
+ */
+register CLRINT {
+	address			0x092
+	access_mode WO
+	count		24
+	field	CLRPARERR	0x10	/* PCI only */
+	field	CLRBRKADRINT	0x08
+	field	CLRSCSIINT      0x04
+	field	CLRCMDINT 	0x02
+	field	CLRSEQINT 	0x01
+	dont_generate_debug_code
+}
+
+register DFCNTRL {
+	address			0x093
+	access_mode RW
+	field	PRELOADEN	0x80	/* aic7890 only */
+	field	WIDEODD		0x40
+	field	SCSIEN		0x20
+	field	SDMAEN		0x10
+	field	SDMAENACK	0x10
+	field	HDMAEN		0x08
+	field	HDMAENACK	0x08
+	field	DIRECTION	0x04
+	field	FIFOFLUSH	0x02
+	field	FIFORESET	0x01
+}
+
+register DFSTATUS {
+	address			0x094
+	access_mode RO
+	field	PRELOAD_AVAIL	0x80
+	field	DFCACHETH	0x40
+	field	FIFOQWDEMP	0x20
+	field	MREQPEND	0x10
+	field	HDONE		0x08
+	field	DFTHRESH	0x04
+	field	FIFOFULL	0x02
+	field	FIFOEMP		0x01
+}
+
+register DFWADDR {
+	address			0x95
+	access_mode RW
+	dont_generate_debug_code
+}
+
+register DFRADDR {
+	address			0x97
+	access_mode RW
+}
+
+register DFDAT {
+	address			0x099
+	access_mode RW
+	dont_generate_debug_code
+}
+
+/*
+ * SCB Auto Increment (p. 3-59)
+ * Byte offset into the SCB Array and an optional bit to allow auto
+ * incrementing of the address during download and upload operations
+ */
+register SCBCNT {
+	address			0x09a
+	access_mode RW
+	count		1
+	field	SCBAUTO		0x80
+	mask	SCBCNT_MASK	0x1f
+	dont_generate_debug_code
+}
+
+/*
+ * Queue In FIFO (p. 3-60)
+ * Input queue for queued SCBs (commands that the seqencer has yet to start)
+ */
+register QINFIFO {
+	address			0x09b
+	access_mode RW
+	count		12
+	dont_generate_debug_code
+}
+
+/*
+ * Queue In Count (p. 3-60)
+ * Number of queued SCBs
+ */
+register QINCNT	{
+	address			0x09c
+	access_mode RO
+}
+
+/*
+ * Queue Out FIFO (p. 3-61)
+ * Queue of SCBs that have completed and await the host
+ */
+register QOUTFIFO {
+	address			0x09d
+	access_mode WO
+	count		7
+	dont_generate_debug_code
+}
+
+register CRCCONTROL1 {
+	address			0x09d
+	access_mode RW
+	count		3
+	field	CRCONSEEN		0x80
+	field	CRCVALCHKEN		0x40
+	field	CRCENDCHKEN		0x20
+	field	CRCREQCHKEN		0x10
+	field	TARGCRCENDEN		0x08
+	field	TARGCRCCNTEN		0x04
+	dont_generate_debug_code
+}
+
+
+/*
+ * Queue Out Count (p. 3-61)
+ * Number of queued SCBs in the Out FIFO
+ */
+register QOUTCNT {
+	address			0x09e
+	access_mode RO
+}
+
+register SCSIPHASE {
+	address			0x09e
+	access_mode RO
+	field	STATUS_PHASE	0x20
+	field	COMMAND_PHASE	0x10
+	field	MSG_IN_PHASE	0x08
+	field	MSG_OUT_PHASE	0x04
+	field	DATA_IN_PHASE	0x02
+	field	DATA_OUT_PHASE	0x01
+	mask	DATA_PHASE_MASK	0x03
+}
+
+/*
+ * Special Function
+ */
+register SFUNCT {
+	address			0x09f
+	access_mode RW
+	count	    4
+	field	ALT_MODE	0x80
+	dont_generate_debug_code
+}
+
+/*
+ * SCB Definition (p. 5-4)
+ */
+scb {
+	address		0x0a0
+	size		64
+
+	SCB_CDB_PTR {
+		size	4
+		alias	SCB_RESIDUAL_DATACNT
+		alias	SCB_CDB_STORE
+		dont_generate_debug_code
+	}
+	SCB_RESIDUAL_SGPTR {
+		size	4
+		dont_generate_debug_code
+	}
+	SCB_SCSI_STATUS {
+		size	1
+		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_DATAPTR {
+		size	4
+		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 */
+		mask	SG_HIGH_ADDR_BITS	0x7F	/* In the fourth byte */
+		dont_generate_debug_code
+	}
+	SCB_SGPTR {
+		size	4
+		field	SG_RESID_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_CONTROL {
+		size	1
+		field	TARGET_SCB			0x80
+		field	STATUS_RCVD			0x80
+		field	DISCENB				0x40
+		field	TAG_ENB				0x20
+		field	MK_MESSAGE			0x10
+		field	ULTRAENB			0x08
+		field	DISCONNECTED			0x04
+		mask	SCB_TAG_TYPE			0x03
+	}
+	SCB_SCSIID {
+		size	1
+		field	TWIN_CHNLB			0x80
+		mask	TWIN_TID			0x70
+		mask	TID				0xf0
+		mask	OID				0x0f
+	}
+	SCB_LUN {
+		field	SCB_XFERLEN_ODD			0x80
+		mask	LID				0x3f
+		size	1
+	}
+	SCB_TAG {
+		size	1
+	}
+	SCB_CDB_LEN {
+		size	1
+		dont_generate_debug_code
+	}
+	SCB_SCSIRATE {
+		size	1
+		dont_generate_debug_code
+	}
+	SCB_SCSIOFFSET {
+		size	1
+		count	1
+		dont_generate_debug_code
+	}
+	SCB_NEXT {
+		size	1
+		dont_generate_debug_code
+	}
+	SCB_64_SPARE {
+		size	16
+	}
+	SCB_64_BTT {
+		size	16
+		dont_generate_debug_code
+	}
+}
+
+const	SCB_UPLOAD_SIZE		32
+const	SCB_DOWNLOAD_SIZE	32
+const	SCB_DOWNLOAD_SIZE_64	48
+
+const	SG_SIZEOF	0x08		/* sizeof(struct ahc_dma) */
+
+/* --------------------- AHA-2840-only definitions -------------------- */
+
+register SEECTL_2840 {
+	address			0x0c0
+	access_mode RW
+	count		2
+	field	CS_2840		0x04
+	field	CK_2840		0x02
+	field	DO_2840		0x01
+	dont_generate_debug_code
+}
+
+register STATUS_2840 {
+	address			0x0c1
+	access_mode RW
+	count		4
+	field	EEPROM_TF	0x80
+	mask	BIOS_SEL	0x60
+	mask	ADSEL		0x1e
+	field	DI_2840		0x01
+	dont_generate_debug_code
+}
+
+/* --------------------- AIC-7870-only definitions -------------------- */
+
+register CCHADDR {
+	address			0x0E0
+	size 8
+	dont_generate_debug_code
+}
+
+register CCHCNT {
+	address			0x0E8
+	dont_generate_debug_code
+}
+
+register CCSGRAM {
+	address			0x0E9
+	dont_generate_debug_code
+}
+
+register CCSGADDR {
+	address			0x0EA
+	dont_generate_debug_code
+}
+
+register CCSGCTL {
+	address			0x0EB
+	field	CCSGDONE	0x80
+	field	CCSGEN		0x08
+	field	SG_FETCH_NEEDED 0x02	/* Bit used for software state */
+	field	CCSGRESET	0x01
+	dont_generate_debug_code
+}
+
+register CCSCBCNT {
+	address			0xEF
+	count		1
+	dont_generate_debug_code
+}
+
+register CCSCBCTL {
+	address			0x0EE
+	field	CCSCBDONE	0x80
+	field	ARRDONE		0x40	/* SCB Array prefetch done */
+	field	CCARREN		0x10
+	field	CCSCBEN		0x08
+	field	CCSCBDIR	0x04
+	field	CCSCBRESET	0x01
+	dont_generate_debug_code
+}
+
+register CCSCBADDR {
+	address			0x0ED
+	dont_generate_debug_code
+}
+
+register CCSCBRAM {
+	address			0xEC
+	dont_generate_debug_code
+}
+
+/*
+ * SCB bank address (7895/7896/97 only)
+ */
+register SCBBADDR {
+	address			0x0F0
+	access_mode RW
+	count		3
+	dont_generate_debug_code
+}
+
+register CCSCBPTR {
+	address			0x0F1
+	dont_generate_debug_code
+}
+
+register HNSCB_QOFF {
+	address			0x0F4
+	count		4
+	dont_generate_debug_code
+}
+
+register SNSCB_QOFF {
+	address			0x0F6
+	dont_generate_debug_code
+}
+
+register SDSCB_QOFF {
+	address			0x0F8
+	dont_generate_debug_code
+}
+
+register QOFF_CTLSTA {
+	address			0x0FA
+	field	SCB_AVAIL	0x40
+	field	SNSCB_ROLLOVER	0x20
+	field	SDSCB_ROLLOVER	0x10
+	mask	SCB_QSIZE	0x07
+	mask	SCB_QSIZE_256	0x06
+	dont_generate_debug_code
+}
+
+register DFF_THRSH {
+	address			0x0FB
+	mask	WR_DFTHRSH	0x70
+	mask	RD_DFTHRSH	0x07
+	mask	RD_DFTHRSH_MIN	0x00
+	mask	RD_DFTHRSH_25	0x01
+	mask	RD_DFTHRSH_50	0x02
+	mask	RD_DFTHRSH_63	0x03
+	mask	RD_DFTHRSH_75	0x04
+	mask	RD_DFTHRSH_85	0x05
+	mask	RD_DFTHRSH_90	0x06
+	mask	RD_DFTHRSH_MAX	0x07
+	mask	WR_DFTHRSH_MIN	0x00
+	mask	WR_DFTHRSH_25	0x10
+	mask	WR_DFTHRSH_50	0x20
+	mask	WR_DFTHRSH_63	0x30
+	mask	WR_DFTHRSH_75	0x40
+	mask	WR_DFTHRSH_85	0x50
+	mask	WR_DFTHRSH_90	0x60
+	mask	WR_DFTHRSH_MAX	0x70
+	count	4
+	dont_generate_debug_code
+}
+
+register SG_CACHE_PRE {
+	access_mode WO
+	address			0x0fc
+	mask	SG_ADDR_MASK	0xf8
+	field	LAST_SEG	0x02
+	field	LAST_SEG_DONE	0x01
+	dont_generate_debug_code
+}
+
+register SG_CACHE_SHADOW {
+	access_mode RO
+	address			0x0fc
+	mask	SG_ADDR_MASK	0xf8
+	field	LAST_SEG	0x02
+	field	LAST_SEG_DONE	0x01
+	dont_generate_debug_code
+}
+/* ---------------------- Scratch RAM Offsets ------------------------- */
+/* These offsets are either to values that are initialized by the board's
+ * BIOS or are specified by the sequencer code.
+ *
+ * The host adapter card (at least the BIOS) uses 20-2f for SCSI
+ * device information, 32-33 and 5a-5f as well. As it turns out, the
+ * BIOS trashes 20-2f, writing the synchronous negotiation results
+ * on top of the BIOS values, so we re-use those for our per-target
+ * scratchspace (actually a value that can be copied directly into
+ * SCSIRATE).  The kernel driver will enable synchronous negotiation
+ * for all targets that have a value other than 0 in the lower four
+ * bits of the target scratch space.  This should work regardless of
+ * whether the bios has been installed.
+ */
+
+scratch_ram {
+	address		0x020
+	size		58
+
+	/*
+	 * 1 byte per target starting at this address for configuration values
+	 */
+	BUSY_TARGETS {
+		alias		TARG_SCSIRATE
+		size		16
+		dont_generate_debug_code
+	}
+	/*
+	 * Bit vector of targets that have ULTRA enabled as set by
+	 * the BIOS.  The Sequencer relies on a per-SCB field to
+	 * control whether to enable Ultra transfers or not.  During
+	 * initialization, we read this field and reuse it for 2
+	 * entries in the busy target table.
+	 */
+	ULTRA_ENB {
+		alias		CMDSIZE_TABLE
+		size		2
+		count		2
+		dont_generate_debug_code
+	}
+	/*
+	 * Bit vector of targets that have disconnection disabled as set by
+	 * the BIOS.  The Sequencer relies in a per-SCB field to control the
+	 * disconnect priveldge.  During initialization, we read this field
+	 * and reuse it for 2 entries in the busy target table.
+	 */
+	DISC_DSB {
+		size		2
+		count		6
+		dont_generate_debug_code
+	}
+	CMDSIZE_TABLE_TAIL {
+		size		4
+	}
+	/*
+	 * Partial transfer past cacheline end to be
+	 * transferred using an extra S/G.
+	 */
+	MWI_RESIDUAL {
+		size		1
+		dont_generate_debug_code
+	}
+	/*
+	 * SCBID of the next SCB to be started by the controller.
+	 */
+	NEXT_QUEUED_SCB {
+		size		1
+		dont_generate_debug_code
+	}
+	/*
+	 * 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		12
+		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
+		mask	PHASE_MASK	CDI|IOI|MSGI
+		mask	P_DATAOUT	0x00
+		mask	P_DATAIN	IOI
+		mask	P_COMMAND	CDI
+		mask	P_MESGOUT	CDI|MSGI
+		mask	P_STATUS	CDI|IOI
+		mask	P_MESGIN	CDI|IOI|MSGI
+		mask	P_BUSFREE	0x01
+	}
+	/*
+	 * head of list of SCBs awaiting
+	 * selection
+	 */
+	WAITING_SCBH {
+		size		1
+		dont_generate_debug_code
+	}
+	/*
+	 * head of list of SCBs that are
+	 * disconnected.  Used for SCB
+	 * paging.
+	 */
+	DISCONNECTED_SCBH {
+		size		1
+		dont_generate_debug_code
+	}
+	/*
+	 * head of list of SCBs that are
+	 * not in use.  Used for SCB paging.
+	 */
+	FREE_SCBH {
+		size		1
+		dont_generate_debug_code
+	}
+	/*
+	 * head of list of SCBs that have
+	 * completed but have not been
+	 * put into the qoutfifo.
+	 */
+	COMPLETE_SCBH {
+		size		1
+	}
+	/*
+	 * Address of the hardware scb array in the host.
+	 */
+	HSCB_ADDR {
+		size		4
+		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
+	}
+	KERNEL_QINPOS {
+		size		1
+		dont_generate_debug_code
+	}
+	QINPOS {
+		size		1
+		dont_generate_debug_code
+	}
+	QOUTPOS {
+		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
+		dont_generate_debug_code
+	}
+	TQINPOS {
+		size		1
+		dont_generate_debug_code
+	}
+	ARG_1 {
+		size		1
+		count		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		0x04
+		mask	CONT_TARG_SESSION	0x02
+		alias	RETURN_1
+		dont_generate_debug_code
+	}
+	ARG_2 {
+		size		1
+		alias	RETURN_2
+		dont_generate_debug_code
+	}
+
+	/*
+	 * Snapshot of MSG_OUT taken after each message is sent.
+	 */
+	LAST_MSG {
+		size		1
+		alias	TARG_IMMEDIATE_SCB
+		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
+		field	ENSELO		0x40
+		field	ENSELI		0x20
+		field	ENRSELI		0x10
+		field	ENAUTOATNO	0x08
+		field	ENAUTOATNI	0x04
+		field	ENAUTOATNP	0x02
+		dont_generate_debug_code
+	}
+}
+
+scratch_ram {
+	address		0x056
+	size		4
+	/*
+	 * These scratch ram locations are initialized by the 274X BIOS.
+	 * We reuse them after capturing the BIOS settings during
+	 * initialization.
+	 */
+
+	/*
+	 * The initiator specified tag for this target mode transaction.
+	 */
+	HA_274_BIOSGLOBAL {
+		size	1
+		field	HA_274_EXTENDED_TRANS	0x01
+		alias	INITIATOR_TAG
+		count		1
+		dont_generate_debug_code
+	}
+
+	SEQ_FLAGS2 {
+		size	1
+		field	SCB_DMA			0x01
+		field	TARGET_MSG_PENDING	0x02
+		dont_generate_debug_code
+	}
+}
+
+scratch_ram {
+	address		0x05a
+	size		6
+	/*
+	 * These are reserved registers in the card's scratch ram on the 2742.
+	 * The EISA configuraiton chip is mapped here.  On Rev E. of the
+	 * aic7770, the sequencer can use this area for scratch, but the
+	 * host cannot directly access these registers.  On later chips, this
+	 * area can be read and written by both the host and the sequencer.
+	 * Even on later chips, many of these locations are initialized by
+	 * the BIOS.
+	 */
+	SCSICONF {
+		size		1
+		count		12
+		field	TERM_ENB	0x80
+		field	RESET_SCSI	0x40
+		field	ENSPCHK		0x20
+		mask	HSCSIID		0x07	/* our SCSI ID */
+		mask	HWSCSIID	0x0f	/* our SCSI ID if Wide Bus */
+		dont_generate_debug_code
+	}
+	INTDEF {
+		address		0x05c
+		size		1
+		count		1
+		field	EDGE_TRIG	0x80
+		mask	VECTOR		0x0f
+		dont_generate_debug_code
+	}
+	HOSTCONF {
+		address		0x05d
+		size		1
+		count		1
+		dont_generate_debug_code
+	}
+	HA_274_BIOSCTRL	{
+		address		0x05f
+		size		1
+		count		1
+		mask	BIOSMODE		0x30
+		mask	BIOSDISABLED		0x30	
+		field	CHANNEL_B_PRIMARY	0x08
+		dont_generate_debug_code
+	}
+}
+
+scratch_ram {
+	address		0x070
+	size		16
+
+	/*
+	 * Per target SCSI offset values for Ultra2 controllers.
+	 */
+	TARG_OFFSET {
+		size		16
+		count		1
+		dont_generate_debug_code
+	}
+}
+
+const TID_SHIFT		4
+const SCB_LIST_NULL	0xff
+const TARGET_CMD_CMPLT	0xfe
+
+const CCSGADDR_MAX	0x80
+const CCSGRAM_MAXSEGS	16
+
+/* WDTR Message values */
+const BUS_8_BIT			0x00
+const BUS_16_BIT		0x01
+const BUS_32_BIT		0x02
+
+/* Offset maximums */
+const MAX_OFFSET_8BIT		0x0f
+const MAX_OFFSET_16BIT		0x08
+const MAX_OFFSET_ULTRA2		0x7f
+const MAX_OFFSET		0x7f
+const HOST_MSG			0xff
+
+/* Target mode command processing constants */
+const CMD_GROUP_CODE_SHIFT	0x05
+
+const STATUS_BUSY		0x08
+const STATUS_QUEUE_FULL	0x28
+const TARGET_DATA_IN		1
+
+/*
+ * Downloaded (kernel inserted) constants
+ */
+/* Offsets into the SCBID array where different data is stored */
+const QOUTFIFO_OFFSET download
+const QINFIFO_OFFSET download
+const CACHESIZE_MASK download
+const INVERTED_CACHESIZE_MASK download
+const SG_PREFETCH_CNT download
+const SG_PREFETCH_ALIGN_MASK download
+const SG_PREFETCH_ADDR_MASK download