patch-2.4.22 linux-2.4.22/drivers/scsi/aic79xx/aic79xx.h

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diff -urN linux-2.4.21/drivers/scsi/aic79xx/aic79xx.h linux-2.4.22/drivers/scsi/aic79xx/aic79xx.h
@@ -1,1480 +0,0 @@
-/*
- * Core definitions and data structures shareable across OS platforms.
- *
- * Copyright (c) 1994-2002 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.
- *
- * $Id: //depot/aic7xxx/aic7xxx/aic79xx.h#78 $
- *
- * $FreeBSD$
- */
-
-#ifndef _AIC79XX_H_
-#define _AIC79XX_H_
-
-/* Register Definitions */
-#include "aic79xx_reg.h"
-
-/************************* Forward Declarations *******************************/
-struct ahd_platform_data;
-struct scb_platform_data;
-
-/****************************** Useful Macros *********************************/
-#ifndef MAX
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
-#endif
-
-#ifndef MIN
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-#endif
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*array))
-
-#define ALL_CHANNELS '\0'
-#define ALL_TARGETS_MASK 0xFFFF
-#define INITIATOR_WILDCARD	(~0)
-#define	SCB_LIST_NULL		0xFF00
-#define	SCB_LIST_NULL_LE	(ahd_htole16(SCB_LIST_NULL))
-#define QOUTFIFO_ENTRY_VALID 0x8000
-#define QOUTFIFO_ENTRY_VALID_LE (ahd_htole16(0x8000))
-#define SCBID_IS_NULL(scbid) (((scbid) & 0xFF00 ) == SCB_LIST_NULL)
-
-#define SCSIID_TARGET(ahd, scsiid)	\
-	(((scsiid) & TID) >> TID_SHIFT)
-#define SCSIID_OUR_ID(scsiid)		\
-	((scsiid) & OID)
-#define SCSIID_CHANNEL(ahd, scsiid) ('A')
-#define	SCB_IS_SCSIBUS_B(ahd, scb) (0)
-#define	SCB_GET_OUR_ID(scb) \
-	SCSIID_OUR_ID((scb)->hscb->scsiid)
-#define	SCB_GET_TARGET(ahd, scb) \
-	SCSIID_TARGET((ahd), (scb)->hscb->scsiid)
-#define	SCB_GET_CHANNEL(ahd, scb) \
-	SCSIID_CHANNEL(ahd, (scb)->hscb->scsiid)
-#define	SCB_GET_LUN(scb) \
-	((scb)->hscb->lun)
-#define SCB_GET_TARGET_OFFSET(ahd, scb)	\
-	SCB_GET_TARGET(ahd, scb)
-#define SCB_GET_TARGET_MASK(ahd, scb) \
-	(0x01 << (SCB_GET_TARGET_OFFSET(ahd, scb)))
-#ifdef AHD_DEBUG
-#define SCB_IS_SILENT(scb)					\
-	((ahd_debug & AHD_SHOW_MASKED_ERRORS) == 0		\
-      && (((scb)->flags & SCB_SILENT) != 0))
-#else
-#define SCB_IS_SILENT(scb)					\
-	(((scb)->flags & SCB_SILENT) != 0)
-#endif
-/*
- * TCLs have the following format: TTTTLLLLLLLL
- */
-#define TCL_TARGET_OFFSET(tcl) \
-	((((tcl) >> 4) & TID) >> 4)
-#define TCL_LUN(tcl) \
-	(tcl & (AHD_NUM_LUNS - 1))
-#define BUILD_TCL(scsiid, lun) \
-	((lun) | (((scsiid) & TID) << 4))
-#define BUILD_TCL_RAW(target, channel, lun) \
-	((lun) | ((target) << 8))
-
-#define SCB_GET_TAG(scb) \
-	ahd_le16toh(scb->hscb->tag)
-
-#ifndef	AHD_TARGET_MODE
-#undef	AHD_TMODE_ENABLE
-#define	AHD_TMODE_ENABLE 0
-#endif
-
-#define AHD_BUILD_COL_IDX(target, lun)				\
-	(((lun) << 4) | target)
-
-#define AHD_GET_SCB_COL_IDX(ahd, scb)				\
-	((SCB_GET_LUN(scb) << 4) | SCB_GET_TARGET(ahd, scb))
-
-#define AHD_SET_SCB_COL_IDX(scb, col_idx)				\
-do {									\
-	(scb)->hscb->scsiid = ((col_idx) << TID_SHIFT) & TID;		\
-	(scb)->hscb->lun = ((col_idx) >> 4) & (AHD_NUM_LUNS_NONPKT-1);	\
-} while (0)
-
-#define AHD_COPY_SCB_COL_IDX(dst, src)				\
-do {								\
-	dst->hscb->scsiid = src->hscb->scsiid;			\
-	dst->hscb->lun = src->hscb->lun;			\
-} while (0)
-
-#define	AHD_NEVER_COL_IDX 0xFFFF
-
-/**************************** Driver Constants ********************************/
-/*
- * The maximum number of supported targets.
- */
-#define AHD_NUM_TARGETS 16
-
-/*
- * The maximum number of supported luns.
- * The identify message only supports 64 luns in non-packetized transfers.
- * You can have 2^64 luns when information unit transfers are enabled,
- * but until we see a need to support that many, we support 256.
- */
-#define AHD_NUM_LUNS_NONPKT 64
-#define AHD_NUM_LUNS 256
-
-/*
- * The maximum transfer per S/G segment.
- */
-#define AHD_MAXTRANSFER_SIZE	 0x00ffffff	/* limited by 24bit counter */
-
-/*
- * The maximum amount of SCB storage in hardware on a controller.
- * This value represents an upper bound.  Due to software design,
- * we may not be able to use this number.
- */
-#define AHD_SCB_MAX	512
-
-/*
- * The maximum number of concurrent transactions supported per driver instance.
- * Sequencer Control Blocks (SCBs) store per-transaction information.
- */
-#define AHD_MAX_QUEUE	AHD_SCB_MAX
-
-/*
- * Define the size of our QIN and QOUT FIFOs.  They must be a power of 2
- * in size and accomodate as many transactions as can be queued concurrently.
- */
-#define	AHD_QIN_SIZE	AHD_MAX_QUEUE
-#define	AHD_QOUT_SIZE	AHD_MAX_QUEUE
-
-#define AHD_QIN_WRAP(x) ((x) & (AHD_QIN_SIZE-1))
-/*
- * The maximum amount of SCB storage we allocate in host memory.
- */
-#define AHD_SCB_MAX_ALLOC AHD_MAX_QUEUE
-
-/*
- * Ring Buffer of incoming target commands.
- * We allocate 256 to simplify the logic in the sequencer
- * by using the natural wrap point of an 8bit counter.
- */
-#define AHD_TMODE_CMDS	256
-
-/* Reset line assertion time in us */
-#define AHD_BUSRESET_DELAY	25
-
-/******************* Chip Characteristics/Operating Settings  *****************/
-/*
- * Chip Type
- * The chip order is from least sophisticated to most sophisticated.
- */
-typedef enum {
-	AHD_NONE	= 0x0000,
-	AHD_CHIPID_MASK	= 0x00FF,
-	AHD_AIC7901	= 0x0001,
-	AHD_AIC7902	= 0x0002,
-	AHD_AIC7901A	= 0x0003,
-	AHD_PCI		= 0x0100,	/* Bus type PCI */
-	AHD_PCIX	= 0x0200,	/* Bus type PCIX */
-	AHD_BUS_MASK	= 0x0F00
-} ahd_chip;
-
-/*
- * Features available in each chip type.
- */
-typedef enum {
-	AHD_FENONE		= 0x00000,
-	AHD_WIDE  		= 0x00001,/* Wide Channel */
-	AHD_MULTI_FUNC		= 0x00100,/* Multi-Function/Channel Device */
-	AHD_TARGETMODE		= 0x01000,/* Has tested target mode support */
-	AHD_MULTIROLE		= 0x02000,/* Space for two roles at a time */
-	AHD_RTI			= 0x04000,/* Retained Training Support */
-	AHD_NEW_IOCELL_OPTS	= 0x08000,/* More Signal knobs in the IOCELL */
-	AHD_NEW_DFCNTRL_OPTS	= 0x10000,/* SCSIENWRDIS bit */
-	AHD_REMOVABLE		= 0x00000,/* Hot-Swap supported - None so far*/
-	AHD_AIC7901_FE		= AHD_FENONE,
-	AHD_AIC7902_FE		= AHD_MULTI_FUNC
-} ahd_feature;
-
-/*
- * Bugs in the silicon that we work around in software.
- */
-typedef enum {
-	AHD_BUGNONE		= 0x0000,
-	/*
-	 * Rev A hardware fails to update LAST/CURR/NEXTSCB
-	 * correctly in certain packetized selection cases.
-	 */
-	AHD_SENT_SCB_UPDATE_BUG	= 0x0001,
-	/* The wrong SCB is accessed to check the abort pending bit. */
-	AHD_ABORT_LQI_BUG	= 0x0002,
-	/* Packetized bitbucket crosses packet boundaries. */
-	AHD_PKT_BITBUCKET_BUG	= 0x0004,
-	/* The selection timer runs twice as long as its setting. */
-	AHD_LONG_SETIMO_BUG	= 0x0008,
-	/* The Non-LQ CRC error status is delayed until phase change. */
-	AHD_NLQICRC_DELAYED_BUG	= 0x0010,
-	/* The chip must be reset for all outgoing bus resets.  */
-	AHD_SCSIRST_BUG		= 0x0020,
-	/* Some PCIX fields must be saved and restored across chip reset. */
-	AHD_PCIX_CHIPRST_BUG	= 0x0040,
-	/* MMAPIO is not functional in PCI-X mode.  */
-	AHD_PCIX_MMAPIO_BUG	= 0x0080,
-	/* Bug workarounds that can be disabled on non-PCIX busses. */
-	AHD_PCIX_BUG_MASK	= AHD_PCIX_CHIPRST_BUG
-				| AHD_PCIX_MMAPIO_BUG,
-	/*
-	 * LQOSTOP0 status set even for forced selections with ATN
-	 * to perform non-packetized message delivery.
-	 */
-	AHD_LQO_ATNO_BUG	= 0x0100,
-	/* FIFO auto-flush does not always trigger.  */
-	AHD_AUTOFLUSH_BUG	= 0x0200,
-	/* The CLRLQO registers are not self-clearing. */
-	AHD_CLRLQO_AUTOCLR_BUG	= 0x0400,
-	/* The PACKETIZED status bit refers to the previous connection. */
-	AHD_PKTIZED_STATUS_BUG  = 0x0800,
-	/* "Short Luns" are not placed into outgoing LQ packets correctly. */
-	AHD_PKT_LUN_BUG		= 0x1000,
-	/*
-	 * Only the FIFO allocated to the non-packetized connection may
-	 * be in use during a non-packetzied connection.
-	 */
-	AHD_NONPACKFIFO_BUG	= 0x2000,
-	/*
-	 * Writing to a DFF SCBPTR register may fail if concurent with
-	 * a hardware write to the other DFF SCBPTR register.  This is
-	 * not currently a concern in our sequencer since all chips with
-	 * this bug have the AHD_NONPACKFIFO_BUG and all writes of concern
-	 * occur in non-packetized connections.
-	 */
-	AHD_MDFF_WSCBPTR_BUG	= 0x4000,
-	/* SGHADDR updates are slow. */
-	AHD_REG_SLOW_SETTLE_BUG	= 0x8000,
-	/*
-	 * Changing the MODE_PTR coincident with an interrupt that
-	 * switches to a different mode will cause the interrupt to
-	 * be in the mode written outside of interrupt context.
-	 */
-	AHD_SET_MODE_BUG	= 0x10000,
-	/* Non-packetized busfree revision does not work. */
-	AHD_BUSFREEREV_BUG	= 0x20000,
-	/*
-	 * Paced transfers are indicated with a non-standard PPR
-	 * option bit in the neg table, 160MHz is indicated by
-	 * sync factor 0x7, and the offset if off by a factor of 2.
-	 */
-	AHD_PACED_NEGTABLE_BUG	= 0x40000,
-	/* LQOOVERRUN false positives. */
-	AHD_LQOOVERRUN_BUG	= 0x80000,
-	/*
-	 * Controller write to INTSTAT will lose to a host
-	 * write to CLRINT.
-	 */
-	AHD_INTCOLLISION_BUG	= 0x100000
-} ahd_bug;
-
-/*
- * Configuration specific settings.
- * The driver determines these settings by probing the
- * chip/controller's configuration.
- */
-typedef enum {
-	AHD_FNONE	      = 0x00000,
-	AHD_PRIMARY_CHANNEL   = 0x00003,/*
-					 * The channel that should
-					 * be probed first.
-					 */
-	AHD_USEDEFAULTS	      = 0x00004,/*
-					 * For cards without an seeprom
-					 * or a BIOS to initialize the chip's
-					 * SRAM, we use the default target
-					 * settings.
-					 */
-	AHD_SEQUENCER_DEBUG   = 0x00008,
-	AHD_RESET_BUS_A	      = 0x00010,
-	AHD_EXTENDED_TRANS_A  = 0x00020,
-	AHD_TERM_ENB_A	      = 0x00040,
-	AHD_SPCHK_ENB_A	      = 0x00080,
-	AHD_STPWLEVEL_A	      = 0x00100,
-	AHD_INITIATORROLE     = 0x00200,/*
-					 * Allow initiator operations on
-					 * this controller.
-					 */
-	AHD_TARGETROLE	      = 0x00400,/*
-					 * Allow target operations on this
-					 * controller.
-					 */
-	AHD_RESOURCE_SHORTAGE = 0x00800,
-	AHD_TQINFIFO_BLOCKED  = 0x01000,/* Blocked waiting for ATIOs */
-	AHD_INT50_SPEEDFLEX   = 0x02000,/*
-					 * Internal 50pin connector
-					 * sits behind an aic3860
-					 */
-	AHD_BIOS_ENABLED      = 0x04000,
-	AHD_ALL_INTERRUPTS    = 0x08000,
-	AHD_39BIT_ADDRESSING  = 0x10000,/* Use 39 bit addressing scheme. */
-	AHD_64BIT_ADDRESSING  = 0x20000,/* Use 64 bit addressing scheme. */
-	AHD_CURRENT_SENSING   = 0x40000,
-	AHD_SCB_CONFIG_USED   = 0x80000,/* No SEEPROM but SCB had info. */
-	AHD_HP_BOARD	      = 0x100000,
-	AHD_RESET_POLL_ACTIVE = 0x200000,
-	AHD_UPDATE_PEND_CMDS  = 0x400000,
-	AHD_RUNNING_QOUTFIFO  = 0x800000
-} ahd_flag;
-
-/************************* Hardware  SCB Definition ***************************/
-
-/*
- * The driver keeps up to MAX_SCB scb structures per card in memory.  The SCB
- * consists of a "hardware SCB" mirroring the fields availible on the card
- * and additional information the kernel stores for each transaction.
- *
- * To minimize space utilization, a portion of the hardware scb stores
- * different data during different portions of a SCSI transaction.
- * As initialized by the host driver for the initiator role, this area
- * contains the SCSI cdb (or a pointer to the  cdb) to be executed.  After
- * the cdb has been presented to the target, this area serves to store
- * residual transfer information and the SCSI status byte.
- * For the target role, the contents of this area do not change, but
- * still serve a different purpose than for the initiator role.  See
- * struct target_data for details.
- */
-
-/*
- * Status information embedded in the shared poriton of
- * an SCB after passing the cdb to the target.  The kernel
- * driver will only read this data for transactions that
- * complete abnormally.
- */
-struct initiator_status {
-	uint32_t residual_datacnt;	/* Residual in the current S/G seg */
-	uint32_t residual_sgptr;	/* The next S/G for this transfer */
-	uint8_t	 scsi_status;		/* Standard SCSI status byte */
-};
-
-struct target_status {
-	uint32_t residual_datacnt;	/* Residual in the current S/G seg */
-	uint32_t residual_sgptr;	/* The next S/G for this transfer */
-	uint8_t  scsi_status;		/* SCSI status to give to initiator */
-	uint8_t  target_phases;		/* Bitmap of phases to execute */
-	uint8_t  data_phase;		/* Data-In or Data-Out */
-	uint8_t  initiator_tag;		/* Initiator's transaction tag */
-};
-
-/*
- * Initiator mode SCB shared data area.
- * If the embedded CDB is 12 bytes or less, we embed
- * the sense buffer address in the SCB.  This allows
- * us to retrieve sense information without interupting
- * the host in packetized mode.
- */
-typedef uint32_t sense_addr_t;
-#define MAX_CDB_LEN 16
-#define MAX_CDB_LEN_WITH_SENSE_ADDR (MAX_CDB_LEN - sizeof(sense_addr_t))
-union initiator_data {
-	uint64_t cdbptr;
-	uint8_t	 cdb[MAX_CDB_LEN];
-	struct {
-		uint8_t	 cdb[MAX_CDB_LEN_WITH_SENSE_ADDR];
-		sense_addr_t sense_addr;
-	} cdb_plus_saddr;
-};
-
-/*
- * Target mode version of the shared data SCB segment.
- */
-struct target_data {
-	uint32_t spare[2];	
-	uint8_t  scsi_status;		/* SCSI status to give to initiator */
-	uint8_t  target_phases;		/* Bitmap of phases to execute */
-	uint8_t  data_phase;		/* Data-In or Data-Out */
-	uint8_t  initiator_tag;		/* Initiator's transaction tag */
-};
-
-struct hardware_scb {
-/*0*/	union {
-		union	initiator_data idata;
-		struct	target_data tdata;
-		struct	initiator_status istatus;
-		struct	target_status tstatus;
-	} shared_data;
-/*
- * A word about residuals.
- * The scb is presented to the sequencer with the dataptr and datacnt
- * fields initialized to the contents of the first S/G element to
- * transfer.  The sgptr field is initialized to the bus address for
- * the S/G element that follows the first in the in core S/G array
- * or'ed with the SG_FULL_RESID flag.  Sgptr may point to an invalid
- * S/G entry for this transfer (single S/G element transfer with the
- * first elements address and length preloaded in the dataptr/datacnt
- * fields).  If no transfer is to occur, sgptr is set to SG_LIST_NULL.
- * The SG_FULL_RESID flag ensures that the residual will be correctly
- * noted even if no data transfers occur.  Once the data phase is entered,
- * the residual sgptr and datacnt are loaded from the sgptr and the
- * datacnt fields.  After each S/G element's dataptr and length are
- * loaded into the hardware, the residual sgptr is advanced.  After
- * each S/G element is expired, its datacnt field is checked to see
- * if the LAST_SEG flag is set.  If so, SG_LIST_NULL is set in the
- * residual sg ptr and the transfer is considered complete.  If the
- * sequencer determines that there is a residual in the tranfer, or
- * there is non-zero status, it will set the SG_STATUS_VALID flag in
- * sgptr and dma the scb back into host memory.  To sumarize:
- *
- * Sequencer:
- *	o A residual has occurred if SG_FULL_RESID is set in sgptr,
- *	  or residual_sgptr does not have SG_LIST_NULL set.
- *
- *	o We are transfering the last segment if residual_datacnt has
- *	  the SG_LAST_SEG flag set.
- *
- * Host:
- *	o A residual can only have occurred if a completed scb has the
- *	  SG_STATUS_VALID flag set.  Inspection of the SCSI status field,
- *	  the residual_datacnt, and the residual_sgptr field will tell
- *	  for sure.
- *
- *	o residual_sgptr and sgptr refer to the "next" sg entry
- *	  and so may point beyond the last valid sg entry for the
- *	  transfer.
- */ 
-#define SG_PTR_MASK	0xFFFFFFF8
-/*16*/	uint16_t tag;
-/*18*/	uint8_t  cdb_len;
-/*19*/	uint8_t  task_management;
-/*20*/	uint32_t next_hscb_busaddr;
-/*24*/	uint64_t dataptr;
-/*32*/	uint32_t datacnt;	/* Byte 3 is spare. */
-/*36*/	uint32_t sgptr;
-/*40*/	uint8_t  control;	/* See SCB_CONTROL in aic79xx.reg for details */
-/*41*/	uint8_t	 scsiid;	/*
-				 * Selection out Id
-				 * Our Id (bits 0-3) Their ID (bits 4-7)
-				 */
-/*42*/	uint8_t  lun;
-/*43*/	uint8_t  task_attribute;
-/*44*/	uint32_t hscb_busaddr;
-/******* Long lun field only downloaded for full 8 byte lun support *******/
-/*48*/  uint8_t	 pkt_long_lun[8];
-/******* Fields below are not Downloaded (Sequencer may use for scratch) ******/
-/*56*/  uint8_t	 spare[8];
-};
-
-/************************ Kernel SCB Definitions ******************************/
-/*
- * Some fields of the SCB are OS dependent.  Here we collect the
- * definitions for elements that all OS platforms need to include
- * in there SCB definition.
- */
-
-/*
- * Definition of a scatter/gather element as transfered to the controller.
- * The aic7xxx chips only support a 24bit length.  We use the top byte of
- * the length to store additional address bits and a flag to indicate
- * that a given segment terminates the transfer.  This gives us an
- * addressable range of 512GB on machines with 64bit PCI or with chips
- * that can support dual address cycles on 32bit PCI busses.
- */
-struct ahd_dma_seg {
-	uint32_t	addr;
-	uint32_t	len;
-#define	AHD_DMA_LAST_SEG	0x80000000
-#define	AHD_SG_HIGH_ADDR_MASK	0x7F000000
-#define	AHD_SG_LEN_MASK		0x00FFFFFF
-};
-
-struct ahd_dma64_seg {
-	uint64_t	addr;
-	uint32_t	len;
-	uint32_t	pad;
-};
-
-struct map_node {
-	bus_dmamap_t		 dmamap;
-	bus_addr_t		 physaddr;
-	uint8_t			*vaddr;
-	SLIST_ENTRY(map_node)	 links;
-};
-
-/*
- * The current state of this SCB.
- */
-typedef enum {
-	SCB_FLAG_NONE		= 0x00000,
-	SCB_TRANSMISSION_ERROR	= 0x00001,/*
-					   * We detected a parity or CRC
-					   * error that has effected the
-					   * payload of the command.  This
-					   * flag is checked when normal
-					   * status is returned to catch
-					   * the case of a target not
-					   * responding to our attempt
-					   * to report the error.
-					   */
-	SCB_OTHERTCL_TIMEOUT	= 0x00002,/*
-					   * Another device was active
-					   * during the first timeout for
-					   * this SCB so we gave ourselves
-					   * an additional timeout period
-					   * in case it was hogging the
-					   * bus.
-				           */
-	SCB_DEVICE_RESET	= 0x00004,
-	SCB_SENSE		= 0x00008,
-	SCB_CDB32_PTR		= 0x00010,
-	SCB_RECOVERY_SCB	= 0x00020,
-	SCB_AUTO_NEGOTIATE	= 0x00040,/* Negotiate to achieve goal. */
-	SCB_NEGOTIATE		= 0x00080,/* Negotiation forced for command. */
-	SCB_ABORT		= 0x00100,
-	SCB_ACTIVE		= 0x00200,
-	SCB_TARGET_IMMEDIATE	= 0x00400,
-	SCB_PACKETIZED		= 0x00800,
-	SCB_EXPECT_PPR_BUSFREE	= 0x01000,
-	SCB_PKT_SENSE		= 0x02000,
-	SCB_CMDPHASE_ABORT	= 0x04000,
-	SCB_ON_COL_LIST		= 0x08000,
-	SCB_SILENT		= 0x10000 /*
-					   * Be quiet about transmission type
-					   * errors.  They are expected and we
-					   * don't want to upset the user.  This
-					   * flag is typically used during DV.
-					   */
-} scb_flag;
-
-struct scb {
-	struct	hardware_scb	 *hscb;
-	union {
-		SLIST_ENTRY(scb)  sle;
-		LIST_ENTRY(scb)	  le;
-		TAILQ_ENTRY(scb)  tqe;
-	} links;
-	union {
-		SLIST_ENTRY(scb)  sle;
-		LIST_ENTRY(scb)	  le;
-		TAILQ_ENTRY(scb)  tqe;
-	} links2;
-#define pending_links links2.le
-#define collision_links links2.le
-	struct scb		 *col_scb;
-	ahd_io_ctx_t		  io_ctx;
-	struct ahd_softc	 *ahd_softc;
-	scb_flag		  flags;
-#ifndef __linux__
-	bus_dmamap_t		  dmamap;
-#endif
-	struct scb_platform_data *platform_data;
-	struct map_node	 	 *hscb_map;
-	struct map_node	 	 *sg_map;
-	struct map_node	 	 *sense_map;
-	void			 *sg_list;
-	uint8_t			 *sense_data;
-	bus_addr_t		  sg_list_busaddr;
-	bus_addr_t		  sense_busaddr;
-	u_int			  sg_count;/* How full ahd_dma_seg is */
-#define	AHD_MAX_LQ_CRC_ERRORS 5
-	u_int			  crc_retry_count;
-};
-
-TAILQ_HEAD(scb_tailq, scb);
-LIST_HEAD(scb_list, scb);
-
-struct scb_data {
-	/*
-	 * TAILQ of lists of free SCBs grouped by device
-	 * collision domains.
-	 */
-	struct scb_tailq free_scbs;
-
-	/*
-	 * Per-device lists of SCBs whose tag ID would collide
-	 * with an already active tag on the device.
-	 */
-	struct scb_list free_scb_lists[AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT];
-
-	/*
-	 * SCBs that will not collide with any active device.
-	 */
-	struct scb_list any_dev_free_scb_list;
-
-	/*
-	 * Mapping from tag to SCB.
-	 */
-	struct	scb *scbindex[AHD_SCB_MAX];
-
-	/*
-	 * "Bus" addresses of our data structures.
-	 */
-	bus_dma_tag_t	 hscb_dmat;	/* dmat for our hardware SCB array */
-	bus_dma_tag_t	 sg_dmat;	/* dmat for our sg segments */
-	bus_dma_tag_t	 sense_dmat;	/* dmat for our sense buffers */
-	SLIST_HEAD(, map_node) hscb_maps;
-	SLIST_HEAD(, map_node) sg_maps;
-	SLIST_HEAD(, map_node) sense_maps;
-	int		 scbs_left;	/* unallocated scbs in head map_node */
-	int		 sgs_left;	/* unallocated sgs in head map_node */
-	int		 sense_left;	/* unallocated sense in head map_node */
-	uint16_t	 numscbs;
-	uint16_t	 maxhscbs;	/* Number of SCBs on the card */
-	uint8_t		 init_level;	/*
-					 * How far we've initialized
-					 * this structure.
-					 */
-};
-
-/************************ Target Mode Definitions *****************************/
-
-/*
- * Connection desciptor for select-in requests in target mode.
- */
-struct target_cmd {
-	uint8_t scsiid;		/* Our ID and the initiator's ID */
-	uint8_t identify;	/* Identify message */
-	uint8_t bytes[22];	/* 
-				 * Bytes contains any additional message
-				 * bytes terminated by 0xFF.  The remainder
-				 * is the cdb to execute.
-				 */
-	uint8_t cmd_valid;	/*
-				 * When a command is complete, the firmware
-				 * will set cmd_valid to all bits set.
-				 * After the host has seen the command,
-				 * the bits are cleared.  This allows us
-				 * to just peek at host memory to determine
-				 * if more work is complete. cmd_valid is on
-				 * an 8 byte boundary to simplify setting
-				 * it on aic7880 hardware which only has
-				 * limited direct access to the DMA FIFO.
-				 */
-	uint8_t pad[7];
-};
-
-/*
- * Number of events we can buffer up if we run out
- * of immediate notify ccbs.
- */
-#define AHD_TMODE_EVENT_BUFFER_SIZE 8
-struct ahd_tmode_event {
-	uint8_t initiator_id;
-	uint8_t event_type;	/* MSG type or EVENT_TYPE_BUS_RESET */
-#define	EVENT_TYPE_BUS_RESET 0xFF
-	uint8_t event_arg;
-};
-
-/*
- * Per enabled lun target mode state.
- * As this state is directly influenced by the host OS'es target mode
- * environment, we let the OS module define it.  Forward declare the
- * structure here so we can store arrays of them, etc. in OS neutral
- * data structures.
- */
-#ifdef AHD_TARGET_MODE 
-struct ahd_tmode_lstate {
-	struct cam_path *path;
-	struct ccb_hdr_slist accept_tios;
-	struct ccb_hdr_slist immed_notifies;
-	struct ahd_tmode_event event_buffer[AHD_TMODE_EVENT_BUFFER_SIZE];
-	uint8_t event_r_idx;
-	uint8_t event_w_idx;
-};
-#else
-struct ahd_tmode_lstate;
-#endif
-
-/******************** Transfer Negotiation Datastructures *********************/
-#define AHD_TRANS_CUR		0x01	/* Modify current neogtiation status */
-#define AHD_TRANS_ACTIVE	0x03	/* Assume this target is on the bus */
-#define AHD_TRANS_GOAL		0x04	/* Modify negotiation goal */
-#define AHD_TRANS_USER		0x08	/* Modify user negotiation settings */
-#define AHD_PERIOD_10MHz	0x19
-
-#define AHD_WIDTH_UNKNOWN	0xFF
-#define AHD_PERIOD_UNKNOWN	0xFF
-#define AHD_OFFSET_UNKNOWN	0x0
-#define AHD_PPR_OPTS_UNKNOWN	0xFF
-
-/*
- * Transfer Negotiation Information.
- */
-struct ahd_transinfo {
-	uint8_t protocol_version;	/* SCSI Revision level */
-	uint8_t transport_version;	/* SPI Revision level */
-	uint8_t width;			/* Bus width */
-	uint8_t period;			/* Sync rate factor */
-	uint8_t offset;			/* Sync offset */
-	uint8_t ppr_options;		/* Parallel Protocol Request options */
-};
-
-/*
- * Per-initiator current, goal and user transfer negotiation information. */
-struct ahd_initiator_tinfo {
-	struct ahd_transinfo curr;
-	struct ahd_transinfo goal;
-	struct ahd_transinfo user;
-};
-
-/*
- * Per enabled target ID state.
- * Pointers to lun target state as well as sync/wide negotiation information
- * for each initiator<->target mapping.  For the initiator role we pretend
- * that we are the target and the targets are the initiators since the
- * negotiation is the same regardless of role.
- */
-struct ahd_tmode_tstate {
-	struct ahd_tmode_lstate*	enabled_luns[AHD_NUM_LUNS];
-	struct ahd_initiator_tinfo	transinfo[AHD_NUM_TARGETS];
-
-	/*
-	 * Per initiator state bitmasks.
-	 */
-	uint16_t	 auto_negotiate;/* Auto Negotiation Required */
-	uint16_t	 discenable;	/* Disconnection allowed  */
-	uint16_t	 tagenable;	/* Tagged Queuing allowed */
-};
-
-/*
- * Points of interest along the negotiated transfer scale.
- */
-#define AHD_SYNCRATE_160	0x8
-#define AHD_SYNCRATE_PACED	0x8
-#define AHD_SYNCRATE_DT		0x9
-#define AHD_SYNCRATE_ULTRA2	0xa
-#define AHD_SYNCRATE_ULTRA	0xc
-#define AHD_SYNCRATE_FAST	0x19
-#define AHD_SYNCRATE_MIN_DT	AHD_SYNCRATE_FAST
-#define AHD_SYNCRATE_SYNC	0x32
-#define AHD_SYNCRATE_MIN	0x60
-#define	AHD_SYNCRATE_ASYNC	0xFF
-#define AHD_SYNCRATE_MAX	AHD_SYNCRATE_160
-
-/* Safe and valid period for async negotiations. */
-#define	AHD_ASYNC_XFER_PERIOD	0x44
-
-/*
- * In RevA, the synctable uses a 120MHz rate for the period
- * factor 8 and 160MHz for the period factor 7.  The 120MHz
- * rate never made it into the official SCSI spec, so we must
- * compensate when setting the negotiation table for Rev A
- * parts.
- */
-#define AHD_SYNCRATE_REVA_120	0x8
-#define AHD_SYNCRATE_REVA_160	0x7
-
-/***************************** Lookup Tables **********************************/
-/*
- * Phase -> name and message out response
- * to parity errors in each phase table. 
- */
-struct ahd_phase_table_entry {
-        uint8_t phase;
-        uint8_t mesg_out; /* Message response to parity errors */
-	char *phasemsg;
-};
-
-/************************** Serial EEPROM Format ******************************/
-
-struct seeprom_config {
-/*
- * Per SCSI ID Configuration Flags
- */
-	uint16_t device_flags[16];	/* words 0-15 */
-#define		CFXFER		0x003F	/* synchronous transfer rate */
-#define			CFXFER_ASYNC	0x3F
-#define		CFQAS		0x0040	/* Negotiate QAS */
-#define		CFPACKETIZED	0x0080	/* Negotiate Packetized Transfers */
-#define		CFSTART		0x0100	/* send start unit SCSI command */
-#define		CFINCBIOS	0x0200	/* include in BIOS scan */
-#define		CFDISC		0x0400	/* enable disconnection */
-#define		CFMULTILUNDEV	0x0800	/* Probe multiple luns in BIOS scan */
-#define		CFWIDEB		0x1000	/* wide bus device */
-#define		CFHOSTMANAGED	0x8000	/* Managed by a RAID controller */
-
-/*
- * BIOS Control Bits
- */
-	uint16_t bios_control;		/* word 16 */
-#define		CFSUPREM	0x0001	/* support all removeable drives */
-#define		CFSUPREMB	0x0002	/* support removeable boot drives */
-#define		CFBIOSSTATE	0x000C	/* BIOS Action State */
-#define		    CFBS_DISABLED	0x00
-#define		    CFBS_ENABLED	0x04
-#define		    CFBS_DISABLED_SCAN	0x08
-#define		CFENABLEDV	0x0010	/* Perform Domain Validation */
-#define		CFCTRL_A	0x0020	/* BIOS displays Ctrl-A message */	
-#define		CFSPARITY	0x0040	/* SCSI parity */
-#define		CFEXTEND	0x0080	/* extended translation enabled */
-#define		CFBOOTCD	0x0100  /* Support Bootable CD-ROM */
-#define		CFMSG_LEVEL	0x0600	/* BIOS Message Level */
-#define			CFMSG_VERBOSE	0x0000
-#define			CFMSG_SILENT	0x0200
-#define			CFMSG_DIAG	0x0400
-#define		CFRESETB	0x0800	/* reset SCSI bus at boot */
-/*		UNUSED		0xf000	*/
-
-/*
- * Host Adapter Control Bits
- */
-	uint16_t adapter_control;	/* word 17 */	
-#define		CFAUTOTERM	0x0001	/* Perform Auto termination */
-#define		CFSTERM		0x0002	/* SCSI low byte termination */
-#define		CFWSTERM	0x0004	/* SCSI high byte termination */
-#define		CFSEAUTOTERM	0x0008	/* Ultra2 Perform secondary Auto Term*/
-#define		CFSELOWTERM	0x0010	/* Ultra2 secondary low term */
-#define		CFSEHIGHTERM	0x0020	/* Ultra2 secondary high term */
-#define		CFSTPWLEVEL	0x0040	/* Termination level control */
-#define		CFBIOSAUTOTERM	0x0080	/* Perform Auto termination */
-#define		CFTERM_MENU	0x0100	/* BIOS displays termination menu */	
-#define		CFCLUSTERENB	0x8000	/* Cluster Enable */
-
-/*
- * Bus Release Time, Host Adapter ID
- */
-	uint16_t brtime_id;		/* word 18 */
-#define		CFSCSIID	0x000f	/* host adapter SCSI ID */
-/*		UNUSED		0x00f0	*/
-#define		CFBRTIME	0xff00	/* bus release time/PCI Latency Time */
-
-/*
- * Maximum targets
- */
-	uint16_t max_targets;		/* word 19 */	
-#define		CFMAXTARG	0x00ff	/* maximum targets */
-#define		CFBOOTLUN	0x0f00	/* Lun to boot from */
-#define		CFBOOTID	0xf000	/* Target to boot from */
-	uint16_t res_1[10];		/* words 20-29 */
-	uint16_t signature;		/* BIOS Signature */
-#define		CFSIGNATURE	0x400
-	uint16_t checksum;		/* word 31 */
-};
-
-/****************************** Flexport Logic ********************************/
-#define FLXADDR_TERMCTL			0x0
-#define		FLX_TERMCTL_ENSECHIGH	0x8
-#define		FLX_TERMCTL_ENSECLOW	0x4
-#define		FLX_TERMCTL_ENPRIHIGH	0x2
-#define		FLX_TERMCTL_ENPRILOW	0x1
-#define FLXADDR_ROMSTAT_CURSENSECTL	0x1
-#define		FLX_ROMSTAT_SEECFG	0xF0
-#define		FLX_ROMSTAT_EECFG	0x0F
-#define		FLX_ROMSTAT_SEE_93C66	0x00
-#define		FLX_ROMSTAT_SEE_NONE	0xF0
-#define		FLX_ROMSTAT_EE_512x8	0x0
-#define		FLX_ROMSTAT_EE_1MBx8	0x1
-#define		FLX_ROMSTAT_EE_2MBx8	0x2
-#define		FLX_ROMSTAT_EE_4MBx8	0x3
-#define		FLX_ROMSTAT_EE_16MBx8	0x4
-#define 		CURSENSE_ENB	0x1
-#define	FLXADDR_FLEXSTAT		0x2
-#define		FLX_FSTAT_BUSY		0x1
-#define FLXADDR_CURRENT_STAT		0x4
-#define		FLX_CSTAT_SEC_HIGH	0xC0
-#define		FLX_CSTAT_SEC_LOW	0x30
-#define		FLX_CSTAT_PRI_HIGH	0x0C
-#define		FLX_CSTAT_PRI_LOW	0x03
-#define		FLX_CSTAT_MASK		0x03
-#define		FLX_CSTAT_SHIFT		2
-#define		FLX_CSTAT_OKAY		0x0
-#define		FLX_CSTAT_OVER		0x1
-#define		FLX_CSTAT_UNDER		0x2
-#define		FLX_CSTAT_INVALID	0x3
-
-int		ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf,
-				 u_int start_addr, u_int count);
-
-int		ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf,
-				  u_int start_addr, u_int count);
-int		ahd_wait_seeprom(struct ahd_softc *ahd);
-int		ahd_verify_cksum(struct seeprom_config *sc);
-int		ahd_acquire_seeprom(struct ahd_softc *ahd);
-void		ahd_release_seeprom(struct ahd_softc *ahd);
-
-/****************************  Message Buffer *********************************/
-typedef enum {
-	MSG_FLAG_NONE			= 0x00,
-	MSG_FLAG_EXPECT_PPR_BUSFREE	= 0x01,
-	MSG_FLAG_IU_REQ_CHANGED		= 0x02,
-	MSG_FLAG_EXPECT_IDE_BUSFREE	= 0x04,
-	MSG_FLAG_EXPECT_QASREJ_BUSFREE	= 0x08,
-	MSG_FLAG_PACKETIZED		= 0x10
-} ahd_msg_flags;
-
-typedef enum {
-	MSG_TYPE_NONE			= 0x00,
-	MSG_TYPE_INITIATOR_MSGOUT	= 0x01,
-	MSG_TYPE_INITIATOR_MSGIN	= 0x02,
-	MSG_TYPE_TARGET_MSGOUT		= 0x03,
-	MSG_TYPE_TARGET_MSGIN		= 0x04
-} ahd_msg_type;
-
-typedef enum {
-	MSGLOOP_IN_PROG,
-	MSGLOOP_MSGCOMPLETE,
-	MSGLOOP_TERMINATED
-} msg_loop_stat;
-
-/*********************** Software Configuration Structure *********************/
-struct ahd_suspend_channel_state {
-	uint8_t	scsiseq;
-	uint8_t	sxfrctl0;
-	uint8_t	sxfrctl1;
-	uint8_t	simode0;
-	uint8_t	simode1;
-	uint8_t	seltimer;
-	uint8_t	seqctl;
-};
-
-struct ahd_suspend_state {
-	struct	ahd_suspend_channel_state channel[2];
-	uint8_t	optionmode;
-	uint8_t	dscommand0;
-	uint8_t	dspcistatus;
-	/* hsmailbox */
-	uint8_t	crccontrol1;
-	uint8_t	scbbaddr;
-	/* Host and sequencer SCB counts */
-	uint8_t	dff_thrsh;
-	uint8_t	*scratch_ram;
-	uint8_t	*btt;
-};
-
-typedef void (*ahd_bus_intr_t)(struct ahd_softc *);
-
-typedef enum {
-	AHD_MODE_DFF0,
-	AHD_MODE_DFF1,
-	AHD_MODE_CCHAN,
-	AHD_MODE_SCSI,
-	AHD_MODE_CFG,
-	AHD_MODE_UNKNOWN
-} ahd_mode;
-
-#define AHD_MK_MSK(x) (0x01 << (x))
-#define AHD_MODE_DFF0_MSK	AHD_MK_MSK(AHD_MODE_DFF0)
-#define AHD_MODE_DFF1_MSK	AHD_MK_MSK(AHD_MODE_DFF1)
-#define AHD_MODE_CCHAN_MSK	AHD_MK_MSK(AHD_MODE_CCHAN)
-#define AHD_MODE_SCSI_MSK	AHD_MK_MSK(AHD_MODE_SCSI)
-#define AHD_MODE_CFG_MSK	AHD_MK_MSK(AHD_MODE_CFG)
-#define AHD_MODE_UNKNOWN_MSK	AHD_MK_MSK(AHD_MODE_UNKNOWN)
-#define AHD_MODE_ANY_MSK (~0)
-
-typedef uint8_t ahd_mode_state;
-
-typedef void ahd_callback_t (void *);
-
-struct ahd_softc {
-	bus_space_tag_t           tags[2];
-	bus_space_handle_t        bshs[2];
-#ifndef __linux__
-	bus_dma_tag_t		  buffer_dmat;   /* dmat for buffer I/O */
-#endif
-	struct scb_data		  scb_data;
-
-	struct hardware_scb	 *next_queued_hscb;
-
-	/*
-	 * SCBs that have been sent to the controller
-	 */
-	LIST_HEAD(, scb)	  pending_scbs;
-
-	/*
-	 * Current register window mode information.
-	 */
-	ahd_mode		  dst_mode;
-	ahd_mode		  src_mode;
-
-	/*
-	 * Saved register window mode information
-	 * used for restore on next unpause.
-	 */
-	ahd_mode		  saved_dst_mode;
-	ahd_mode		  saved_src_mode;
-
-	/*
-	 * Platform specific data.
-	 */
-	struct ahd_platform_data *platform_data;
-
-	/*
-	 * Platform specific device information.
-	 */
-	ahd_dev_softc_t		  dev_softc;
-
-	/*
-	 * Bus specific device information.
-	 */
-	ahd_bus_intr_t		  bus_intr;
-
-	/*
-	 * Target mode related state kept on a per enabled lun basis.
-	 * Targets that are not enabled will have null entries.
-	 * As an initiator, we keep one target entry for our initiator
-	 * ID to store our sync/wide transfer settings.
-	 */
-	struct ahd_tmode_tstate  *enabled_targets[AHD_NUM_TARGETS];
-
-	/*
-	 * The black hole device responsible for handling requests for
-	 * disabled luns on enabled targets.
-	 */
-	struct ahd_tmode_lstate  *black_hole;
-
-	/*
-	 * Device instance currently on the bus awaiting a continue TIO
-	 * for a command that was not given the disconnect priveledge.
-	 */
-	struct ahd_tmode_lstate  *pending_device;
-
-	/*
-	 * Timer handles for timer driven callbacks.
-	 */
-	ahd_timer_t		  reset_timer;
-	ahd_timer_t		  stat_timer;
-
-	/*
-	 * Statistics.
-	 */
-#define	AHD_STAT_UPDATE_US	250000 /* 250ms */
-#define	AHD_STAT_BUCKETS	4
-	u_int			  cmdcmplt_bucket;
-	uint32_t		  cmdcmplt_counts[AHD_STAT_BUCKETS];
-	uint32_t		  cmdcmplt_total;
-
-	/*
-	 * Card characteristics
-	 */
-	ahd_chip		  chip;
-	ahd_feature		  features;
-	ahd_bug			  bugs;
-	ahd_flag		  flags;
-	struct seeprom_config	 *seep_config;
-
-	/* Values to store in the SEQCTL register for pause and unpause */
-	uint8_t			  unpause;
-	uint8_t			  pause;
-
-	/* Command Queues */
-	uint16_t		  qoutfifonext;
-	uint16_t		  qoutfifonext_valid_tag;
-	uint16_t		  qinfifonext;
-	uint16_t		  qinfifo[AHD_SCB_MAX];
-	uint16_t		 *qoutfifo;
-
-	/* Critical Section Data */
-	struct cs		 *critical_sections;
-	u_int			  num_critical_sections;
-
-	/* Buffer for handling packetized bitbucket. */
-	uint8_t			 *overrun_buf;
-
-	/* Links for chaining softcs */
-	TAILQ_ENTRY(ahd_softc)	  links;
-
-	/* Channel Names ('A', 'B', etc.) */
-	char			  channel;
-
-	/* Initiator Bus ID */
-	uint8_t			  our_id;
-
-	/*
-	 * Target incoming command FIFO.
-	 */
-	struct target_cmd	 *targetcmds;
-	uint8_t			  tqinfifonext;
-
-	/*
-	 * Cached verson of the hs_mailbox so we can avoid
-	 * pausing the sequencer during mailbox updates.
-	 */
-	uint8_t			  hs_mailbox;
-
-	/*
-	 * Incoming and outgoing message handling.
-	 */
-	uint8_t			  send_msg_perror;
-	ahd_msg_flags		  msg_flags;
-	ahd_msg_type		  msg_type;
-	uint8_t			  msgout_buf[12];/* Message we are sending */
-	uint8_t			  msgin_buf[12];/* Message we are receiving */
-	u_int			  msgout_len;	/* Length of message to send */
-	u_int			  msgout_index;	/* Current index in msgout */
-	u_int			  msgin_index;	/* Current index in msgin */
-
-	/*
-	 * Mapping information for data structures shared
-	 * between the sequencer and kernel.
-	 */
-	bus_dma_tag_t		  parent_dmat;
-	bus_dma_tag_t		  shared_data_dmat;
-	bus_dmamap_t		  shared_data_dmamap;
-	bus_addr_t		  shared_data_busaddr;
-
-	/* Information saved through suspend/resume cycles */
-	struct ahd_suspend_state  suspend_state;
-
-	/* Number of enabled target mode device on this card */
-	u_int			  enabled_luns;
-
-	/* Initialization level of this data structure */
-	u_int			  init_level;
-
-	/* PCI cacheline size. */
-	u_int			  pci_cachesize;
-
-	/* IO Cell Parameters */
-	uint8_t			  iocell_opts[AHD_NUM_PER_DEV_ANNEXCOLS];
-
-	u_int			  stack_size;
-	uint16_t		 *saved_stack;
-
-	/* Per-Unit descriptive information */
-	const char		 *description;
-	const char		 *bus_description;
-	char			 *name;
-	int			  unit;
-
-	/* Selection Timer settings */
-	int			  seltime;
-
-	/*
-	 * Interrupt coalessing settings.
-	 */
-#define	AHD_INT_COALESSING_TIMER_DEFAULT		250 /*us*/
-#define	AHD_INT_COALESSING_MAXCMDS_DEFAULT		10
-#define	AHD_INT_COALESSING_MAXCMDS_MAX			127
-#define	AHD_INT_COALESSING_MINCMDS_DEFAULT		5
-#define	AHD_INT_COALESSING_MINCMDS_MAX			127
-#define	AHD_INT_COALESSING_THRESHOLD_DEFAULT		2000
-#define	AHD_INT_COALESSING_STOP_THRESHOLD_DEFAULT	1000
-	u_int			  int_coalessing_timer;
-	u_int			  int_coalessing_maxcmds;
-	u_int			  int_coalessing_mincmds;
-	u_int			  int_coalessing_threshold;
-	u_int			  int_coalessing_stop_threshold;
-
-	uint16_t	 	  user_discenable;/* Disconnection allowed  */
-	uint16_t		  user_tagenable;/* Tagged Queuing allowed */
-};
-
-TAILQ_HEAD(ahd_softc_tailq, ahd_softc);
-extern struct ahd_softc_tailq ahd_tailq;
-
-/*************************** IO Cell Configuration ****************************/
-#define	AHD_PRECOMP_SLEW_INDEX						\
-    (AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0)
-
-#define	AHD_AMPLITUDE_INDEX						\
-    (AHD_ANNEXCOL_AMPLITUDE - AHD_ANNEXCOL_PER_DEV0)
-
-#define AHD_SET_SLEWRATE(ahd, new_slew)					\
-do {									\
-    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_SLEWRATE_MASK;	\
-    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |=			\
-	(((new_slew) << AHD_SLEWRATE_SHIFT) & AHD_SLEWRATE_MASK);	\
-} while (0)
-
-#define AHD_SET_PRECOMP(ahd, new_pcomp)					\
-do {									\
-    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK;	\
-    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |=			\
-	(((new_pcomp) << AHD_PRECOMP_SHIFT) & AHD_PRECOMP_MASK);	\
-} while (0)
-
-#define AHD_SET_AMPLITUDE(ahd, new_amp)					\
-do {									\
-    (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK;	\
-    (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] |=				\
-	(((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK);	\
-} while (0)
-
-/************************ Active Device Information ***************************/
-typedef enum {
-	ROLE_UNKNOWN,
-	ROLE_INITIATOR,
-	ROLE_TARGET
-} role_t;
-
-struct ahd_devinfo {
-	int	 our_scsiid;
-	int	 target_offset;
-	uint16_t target_mask;
-	u_int	 target;
-	u_int	 lun;
-	char	 channel;
-	role_t	 role;		/*
-				 * Only guaranteed to be correct if not
-				 * in the busfree state.
-				 */
-};
-
-/****************************** PCI Structures ********************************/
-#define AHD_PCI_IOADDR0	PCIR_MAPS	/* I/O BAR*/
-#define AHD_PCI_MEMADDR	(PCIR_MAPS + 4)	/* Memory BAR */
-#define AHD_PCI_IOADDR1	(PCIR_MAPS + 12)/* Second I/O BAR */
-
-typedef int (ahd_device_setup_t)(struct ahd_softc *);
-
-struct ahd_pci_identity {
-	uint64_t		 full_id;
-	uint64_t		 id_mask;
-	char			*name;
-	ahd_device_setup_t	*setup;
-};
-extern struct ahd_pci_identity ahd_pci_ident_table [];
-extern const u_int ahd_num_pci_devs;
-
-/***************************** VL/EISA Declarations ***************************/
-struct aic7770_identity {
-	uint32_t		 full_id;
-	uint32_t		 id_mask;
-	char			*name;
-	ahd_device_setup_t	*setup;
-};
-extern struct aic7770_identity aic7770_ident_table [];
-extern const int ahd_num_aic7770_devs;
-
-#define AHD_EISA_SLOT_OFFSET	0xc00
-#define AHD_EISA_IOSIZE		0x100
-
-/*************************** Function Declarations ****************************/
-/******************************************************************************/
-void			ahd_reset_cmds_pending(struct ahd_softc *ahd);
-u_int			ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl);
-void			ahd_busy_tcl(struct ahd_softc *ahd,
-				     u_int tcl, u_int busyid);
-static __inline void	ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl);
-static __inline void
-ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl)
-{
-	ahd_busy_tcl(ahd, tcl, SCB_LIST_NULL);
-}
-
-/***************************** PCI Front End *********************************/
-struct	ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
-int			  ahd_pci_config(struct ahd_softc *,
-					 struct ahd_pci_identity *);
-int	ahd_pci_test_register_access(struct ahd_softc *);
-
-/************************** SCB and SCB queue management **********************/
-int		ahd_probe_scbs(struct ahd_softc *);
-void		ahd_qinfifo_requeue_tail(struct ahd_softc *ahd,
-					 struct scb *scb);
-int		ahd_match_scb(struct ahd_softc *ahd, struct scb *scb,
-			      int target, char channel, int lun,
-			      u_int tag, role_t role);
-
-/****************************** Initialization ********************************/
-struct ahd_softc	*ahd_alloc(void *platform_arg, char *name);
-int			 ahd_softc_init(struct ahd_softc *);
-void			 ahd_controller_info(struct ahd_softc *ahd, char *buf);
-int			 ahd_init(struct ahd_softc *ahd);
-int			 ahd_default_config(struct ahd_softc *ahd);
-int			 ahd_parse_cfgdata(struct ahd_softc *ahd,
-					   struct seeprom_config *sc);
-void			 ahd_intr_enable(struct ahd_softc *ahd, int enable);
-void			 ahd_update_coalessing_values(struct ahd_softc *ahd,
-						      u_int timer,
-						      u_int maxcmds,
-						      u_int mincmds);
-void			 ahd_enable_coalessing(struct ahd_softc *ahd,
-					       int enable);
-void			 ahd_pause_and_flushwork(struct ahd_softc *ahd);
-int			 ahd_suspend(struct ahd_softc *ahd); 
-int			 ahd_resume(struct ahd_softc *ahd);
-void			 ahd_softc_insert(struct ahd_softc *);
-struct ahd_softc	*ahd_find_softc(struct ahd_softc *ahd);
-void			 ahd_set_unit(struct ahd_softc *, int);
-void			 ahd_set_name(struct ahd_softc *, char *);
-struct scb		*ahd_get_scb(struct ahd_softc *ahd, u_int col_idx);
-void			 ahd_free_scb(struct ahd_softc *ahd, struct scb *scb);
-void			 ahd_alloc_scbs(struct ahd_softc *ahd);
-void			 ahd_free(struct ahd_softc *ahd);
-int			 ahd_reset(struct ahd_softc *ahd);
-void			 ahd_shutdown(void *arg);
-int			ahd_write_flexport(struct ahd_softc *ahd,
-					   u_int addr, u_int value);
-int			ahd_read_flexport(struct ahd_softc *ahd, u_int addr,
-					  uint8_t *value);
-int			ahd_wait_flexport(struct ahd_softc *ahd);
-
-/*************************** Interrupt Services *******************************/
-void			ahd_pci_intr(struct ahd_softc *ahd);
-void			ahd_clear_intstat(struct ahd_softc *ahd);
-void			ahd_flush_qoutfifo(struct ahd_softc *ahd);
-void			ahd_run_qoutfifo(struct ahd_softc *ahd);
-#ifdef AHD_TARGET_MODE
-void			ahd_run_tqinfifo(struct ahd_softc *ahd, int paused);
-#endif
-void			ahd_handle_hwerrint(struct ahd_softc *ahd);
-void			ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat);
-void			ahd_handle_scsiint(struct ahd_softc *ahd,
-					   u_int intstat);
-void			ahd_clear_critical_section(struct ahd_softc *ahd);
-
-/***************************** Error Recovery *********************************/
-typedef enum {
-	SEARCH_COMPLETE,
-	SEARCH_COUNT,
-	SEARCH_REMOVE,
-	SEARCH_PRINT
-} ahd_search_action;
-int			ahd_search_qinfifo(struct ahd_softc *ahd, int target,
-					   char channel, int lun, u_int tag,
-					   role_t role, uint32_t status,
-					   ahd_search_action action);
-int			ahd_search_disc_list(struct ahd_softc *ahd, int target,
-					     char channel, int lun, u_int tag,
-					     int stop_on_first, int remove,
-					     int save_state);
-void			ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
-int			ahd_reset_channel(struct ahd_softc *ahd, char channel,
-					  int initiate_reset);
-int			ahd_abort_scbs(struct ahd_softc *ahd, int target,
-				       char channel, int lun, u_int tag,
-				       role_t role, uint32_t status);
-void			ahd_restart(struct ahd_softc *ahd);
-void			ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo);
-void			ahd_handle_scb_status(struct ahd_softc *ahd,
-					      struct scb *scb);
-void			ahd_handle_scsi_status(struct ahd_softc *ahd,
-					       struct scb *scb);
-void			ahd_calc_residual(struct ahd_softc *ahd,
-					  struct scb *scb);
-/*************************** Utility Functions ********************************/
-struct ahd_phase_table_entry*
-			ahd_lookup_phase_entry(int phase);
-void			ahd_compile_devinfo(struct ahd_devinfo *devinfo,
-					    u_int our_id, u_int target,
-					    u_int lun, char channel,
-					    role_t role);
-/************************** Transfer Negotiation ******************************/
-void			ahd_find_syncrate(struct ahd_softc *ahd, u_int *period,
-					  u_int *ppr_options, u_int maxsync);
-void			ahd_validate_offset(struct ahd_softc *ahd,
-					    struct ahd_initiator_tinfo *tinfo,
-					    u_int period, u_int *offset,
-					    int wide, role_t role);
-void			ahd_validate_width(struct ahd_softc *ahd,
-					   struct ahd_initiator_tinfo *tinfo,
-					   u_int *bus_width,
-					   role_t role);
-/*
- * Negotiation types.  These are used to qualify if we should renegotiate
- * even if our goal and current transport parameters are identical.
- */
-typedef enum {
-	AHD_NEG_TO_GOAL,	/* Renegotiate only if goal and curr differ. */
-	AHD_NEG_IF_NON_ASYNC,	/* Renegotiate so long as goal is non-async. */
-	AHD_NEG_ALWAYS		/* Renegotiat even if goal is async. */
-} ahd_neg_type;
-int			ahd_update_neg_request(struct ahd_softc*,
-					       struct ahd_devinfo*,
-					       struct ahd_tmode_tstate*,
-					       struct ahd_initiator_tinfo*,
-					       ahd_neg_type);
-void			ahd_set_width(struct ahd_softc *ahd,
-				      struct ahd_devinfo *devinfo,
-				      u_int width, u_int type, int paused);
-void			ahd_set_syncrate(struct ahd_softc *ahd,
-					 struct ahd_devinfo *devinfo,
-					 u_int period, u_int offset,
-					 u_int ppr_options,
-					 u_int type, int paused);
-typedef enum {
-	AHD_QUEUE_NONE,
-	AHD_QUEUE_BASIC,
-	AHD_QUEUE_TAGGED
-} ahd_queue_alg;
-
-void			ahd_set_tags(struct ahd_softc *ahd,
-				     struct ahd_devinfo *devinfo,
-				     ahd_queue_alg alg);
-
-/**************************** Target Mode *************************************/
-#ifdef AHD_TARGET_MODE
-void		ahd_send_lstate_events(struct ahd_softc *,
-				       struct ahd_tmode_lstate *);
-void		ahd_handle_en_lun(struct ahd_softc *ahd,
-				  struct cam_sim *sim, union ccb *ccb);
-cam_status	ahd_find_tmode_devs(struct ahd_softc *ahd,
-				    struct cam_sim *sim, union ccb *ccb,
-				    struct ahd_tmode_tstate **tstate,
-				    struct ahd_tmode_lstate **lstate,
-				    int notfound_failure);
-#ifndef AHD_TMODE_ENABLE
-#define AHD_TMODE_ENABLE 0
-#endif
-#endif
-/******************************* Debug ***************************************/
-#ifdef AHD_DEBUG
-extern uint32_t ahd_debug;
-#define AHD_SHOW_MISC		0x00001
-#define AHD_SHOW_SENSE		0x00002
-#define AHD_SHOW_RECOVERY	0x00004
-#define AHD_DUMP_SEEPROM	0x00008
-#define AHD_SHOW_TERMCTL	0x00010
-#define AHD_SHOW_MEMORY		0x00020
-#define AHD_SHOW_MESSAGES	0x00040
-#define AHD_SHOW_MODEPTR	0x00080
-#define AHD_SHOW_SELTO		0x00100
-#define AHD_SHOW_FIFOS		0x00200
-#define AHD_SHOW_QFULL		0x00400
-#define	AHD_SHOW_DV		0x00800
-#define AHD_SHOW_MASKED_ERRORS	0x01000
-#define AHD_SHOW_QUEUE		0x02000
-#define AHD_SHOW_TQIN		0x04000
-#define AHD_SHOW_SG		0x08000
-#define AHD_SHOW_INT_COALESSING	0x10000
-#define AHD_DEBUG_SEQUENCER	0x20000
-#endif
-void			ahd_print_scb(struct scb *scb);
-void			ahd_print_devinfo(struct ahd_softc *ahd,
-					  struct ahd_devinfo *devinfo);
-void			ahd_dump_sglist(struct scb *scb);
-void			ahd_dump_all_cards_state(void);
-void			ahd_dump_card_state(struct ahd_softc *ahd);
-int			ahd_print_register(ahd_reg_parse_entry_t *table,
-					   u_int num_entries,
-					   const char *name,
-					   u_int address,
-					   u_int value,
-					   u_int *cur_column,
-					   u_int wrap_point);
-void			ahd_dump_scbs(struct ahd_softc *ahd);
-#endif /* _AIC79XX_H_ */

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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)